CN104754765A

CN104754765A - Wireless local area network connection determining method, device and system in heterogeneous network

Info

Publication number: CN104754765A
Application number: CN201310754179.5A
Authority: CN
Inventors: 付晓; 王楠
Original assignee: Alcatel Lucent Shanghai Bell Co Ltd
Current assignee: Nokia Shanghai Bell Co Ltd
Priority date: 2013-12-31
Filing date: 2013-12-31
Publication date: 2015-07-01
Anticipated expiration: 2033-12-31
Also published as: CN104754765B

Abstract

The invention provides a method for determining connection between wireless local area networks (WLAN) in user equipment of a heterogeneous network. The heterogeneous network comprises a cellular network and the WLAN. The method comprises the following steps: a, receiving a WLAN connection instruction sent by a source base station, needed to be switched by the user equipment and indicated by a target base station, wherein the WLAN connection instruction can be used for indicating the WLAN connection related operation of the user equipment; b, according to the WLAN connection instruction, executing the corresponding WLAN connection operation. According to the method, in the heterogeneous network comprising the cellular network and the WLAN, the cellular network controls the connection of the user equipment and the WLAN in the switching process.

Description

WLAN in heterogeneous network connects defining method, device and system

Technical field

The present invention relates to communication technical field, particularly relate to a kind of WLAN in heterogeneous network and connect defining method, device and system.

Background technology

In prior art, under the heterogeneous network environment that cellular network and WLAN coexist, the connection between subscriber equipment and WLAN and cellular network are irrelevant, and cellular network can't participate in and/or control the connection between subscriber equipment and WLAN.Especially, when subscriber equipment carries out handover between cells in Cellular Networks, cellular network does not participate in and/or controls the connection between subscriber equipment and WLAN.

Summary of the invention

The object of this invention is to provide a kind of WLAN in heterogeneous network and connect defining method, device and system.

According to an aspect of the present invention, provide a kind of in the subscriber equipment of heterogeneous network for determining the first jockey of the connection between WLAN, wherein, described heterogeneous network comprises cellular network and WLAN, and this first jockey comprises with lower device:

First receiving device, for receiving that source base station sends, that described subscriber equipment needs the target BS instruction switched to WLAN bind command, this WLAN bind command can be used in indicating the WLAN join dependency of described subscriber equipment to operate;

Jockey, for performing corresponding WLAN attended operation according to described WLAN bind command.

According to another aspect of the present invention, additionally provide a kind of the first servicing unit determining the connection between itself and WLAN in the base station of heterogeneous network for assisting user equipment, wherein, described heterogeneous network comprises cellular network and WLAN, described base station is the source base station of subscriber equipment in handoff procedure, and this first servicing unit comprises with lower device:

First determining device, for needing the WLAN coverage information of the target BS switched to according to the WLAN coverage information of described source base station and described subscriber equipment, determines the WLAN distribution pattern of described subscriber equipment in handoff procedure;

First dispensing device, for according to described WLAN distribution pattern, needs the target BS switched to send the WLAN relevant information of described subscriber equipment to described subscriber equipment;

Second receiving system, for receiving the WLAN bind command of described target BS feedback, this WLAN bind command can be used in indicating the WLAN join dependency of described subscriber equipment to operate;

Second dispensing device, for sending to described subscriber equipment by described WLAN bind command.

According to a further aspect in the invention, additionally provide a kind of the second servicing unit determining the connection between itself and WLAN in the base station of heterogeneous network for assisting user equipment, wherein, described heterogeneous network comprises cellular network and WLAN, described base station is the target BS of subscriber equipment in handoff procedure, and this second servicing unit comprises with lower device:

3rd receiving system, for receiving WLAN relevant information that the source base station of subscriber equipment in handoff procedure sends, described subscriber equipment;

Second determining device, for the WLAN coverage information according to described WLAN relevant information and described target BS, determines WLAN bind command, and this WLAN bind command can be used in indicating the WLAN join dependency of described subscriber equipment to operate;

4th dispensing device, for sending to described source base station by described WLAN bind command.

According to a further aspect in the invention, additionally provide a kind of in the subscriber equipment of heterogeneous network for determining the method for the connection between WLAN, wherein, described heterogeneous network comprises cellular network and WLAN, and the method comprises the following steps:

A receives that source base station sends, that described subscriber equipment needs the target BS instruction switched to WLAN bind command, and this WLAN bind command can be used in indicating the WLAN join dependency of described subscriber equipment to operate;

B performs corresponding WLAN attended operation according to described WLAN bind command.

According to a further aspect in the invention, additionally provide a kind of method determining the connection between itself and WLAN in the base station of heterogeneous network for assisting user equipment, wherein, described heterogeneous network comprises cellular network and WLAN, described base station is the source base station of subscriber equipment in handoff procedure, and the method comprises the following steps:

Q needs the WLAN coverage information of the target BS switched to according to the WLAN coverage information of described source base station and described subscriber equipment, determines the WLAN distribution pattern of described subscriber equipment in handoff procedure;

R, according to described WLAN distribution pattern, needs the target BS switched to send the WLAN relevant information of described subscriber equipment to described subscriber equipment;

S receives the WLAN bind command of described target BS feedback, and this WLAN bind command can be used in indicating the WLAN join dependency of described subscriber equipment to operate;

Described WLAN bind command is sent to described subscriber equipment by t.

According to a further aspect in the invention, additionally provide a kind of method determining the connection between itself and WLAN in the base station of heterogeneous network for assisting user equipment, wherein, described heterogeneous network comprises cellular network and WLAN, described base station is the target BS of subscriber equipment in handoff procedure, and the method comprises the following steps:

X receives WLAN relevant information that the source base station of subscriber equipment in handoff procedure sends, described subscriber equipment;

Y is according to the WLAN coverage information of described WLAN relevant information and described target BS, and determine WLAN bind command, this WLAN bind command can be used in indicating the WLAN join dependency of described subscriber equipment to operate;

Described WLAN bind command is sent to described source base station by z.

According to a further aspect in the invention, additionally provide a kind of heterogeneous network, wherein, described heterogeneous network comprises cellular network and WLAN, subscriber equipment in described heterogeneous network comprises the first jockey of the present invention, and the base station in described heterogeneous network comprises the first servicing unit of the present invention and/or the second servicing unit of the present invention.

According to a further aspect in the invention, additionally provide a kind of in the subscriber equipment of heterogeneous network for determining the second jockey of the connection between WLAN, wherein, described heterogeneous network comprises cellular network and WLAN, and this second jockey comprises with lower device:

4th receiving system, during for needing to switch to target BS from source base station when described subscriber equipment, receives the relevant information of the WLAN in cellular network relevant information that provide from source base station, target BS and target BS coverage;

3rd determining device, for the relevant information according to described cellular network relevant information and described WLAN, and carries out to the WLAN in described target BS coverage the WLAN measurement result measuring gained in conjunction with described subscriber equipment, determines the WLAN needing to connect.

A, when described subscriber equipment needs to switch to target BS from source base station, receives the relevant information of the WLAN in cellular network relevant information that provide from source base station, target BS and target BS coverage;

B according to the relevant information of described cellular network relevant information and described WLAN, and carries out to the WLAN in described target BS coverage the WLAN measurement result measuring gained in conjunction with described subscriber equipment, determines the WLAN needing to connect.

According to a further aspect in the invention, additionally provide a kind of heterogeneous network, wherein, described heterogeneous network comprises cellular network and WLAN, subscriber equipment in described heterogeneous network comprises the second jockey of the present invention, and the base station in described heterogeneous network comprises with lower device:

Retransmission unit, for when this base station is as source base station in described subscriber equipment handoff procedure, the relevant information of the WLAN in cellular network relevant information that provided by this target BS, this target BS and target BS coverage is transmitted to described subscriber equipment;

5th dispensing device, for when this base station is as target BS in described subscriber equipment handoff procedure, sends the relevant information of the WLAN in the cellular network relevant information of this target BS and target BS coverage to described source base station.

Compared with prior art, the present invention has the following advantages: in the heterogeneous network 1) coexisted at cellular network and WLAN, the connection that can control between subscriber equipment and WLAN by cellular network, and when subscriber equipment needs to switch to target BS by source base station, target BS can before subscriber equipment be switched to this target BS, the join dependency that equipment for indicating user performs between WLAN operates, thus the delay of the access of WLAN is reduced when cellular network controls the connection between subscriber equipment and WLAN, the QoS improving user experiences; 2) in the heterogeneous network coexisted at cellular network and WLAN, assisting user equipment can be carried out by base station and carry out WLAN connection, the relevant information of the WLAN in the cellular-related information that subscriber equipment can need the target BS that switch to provide according to it and target BS coverage, and in conjunction with this subscriber equipment, the WLAN in target BS coverage is carried out measuring the WLAN measurement result of gained to determine the connection between this subscriber equipment and WLAN.

Accompanying drawing explanation

By reading the detailed description done non-limiting example done with reference to the following drawings, other features, objects and advantages of the present invention will become more obvious:

Fig. 1 is the schematic flow sheet determining the method for the connection between WLAN in heterogeneous network of a preferred embodiment of the present invention;

Fig. 2 is the schematic flow sheet determining the method for the connection between WLAN in heterogeneous network of another preferred embodiment of the present invention;

Fig. 3 is the system configuration schematic diagram determining the connection between WLAN in heterogeneous network of a preferred embodiment of the present invention;

Fig. 4 is the system configuration schematic diagram determining the connection between WLAN in heterogeneous network of another preferred embodiment of the present invention;

Fig. 5 is the WLAN distribution pattern of an example is type schematic diagram for the moment;

The schematic diagram that Fig. 6 is the WLAN distribution pattern of an example when being type two;

The schematic diagram that Fig. 7 is the WLAN distribution pattern of an example when being type three.

In accompanying drawing, same or analogous Reference numeral represents same or analogous parts.

Embodiment

Below in conjunction with accompanying drawing, the present invention is described in further detail.

Fig. 1 is the schematic flow sheet determining the method for the connection between WLAN in heterogeneous network of a preferred embodiment of the invention.Wherein, the method for the present embodiment realizes mainly through subscriber equipment and base station; Wherein, described heterogeneous network comprises cellular network and WLAN, and described base station is the base station in cellular network; Wherein, described subscriber equipment include but not limited to panel computer, smart mobile phone, PDA etc. any can with the subscriber equipment of base station communication.

It should be noted that, described subscriber equipment and base station are only citing, and other computing equipments that are existing or that may occur from now on or network, as being applicable to the present invention, within also should being included in scope, and are contained in this with way of reference.

In the present embodiment, carry out equipment for indicating user primarily of base station and carry out WLAN connection; Subscriber equipment in the present embodiment needs to switch to target BS by source base station.

Step S101, step S102, step S103, step S104, step S105, step S106, step S107, step S108 and step S109 is comprised according to the method for the present embodiment.

In step S101, source base station needs the WLAN coverage information of the target BS switched to according to its WLAN coverage information and subscriber equipment, determines the WLAN distribution pattern of this subscriber equipment in handoff procedure.

Wherein, the WLAN coverage information of source base station represents the coverage information of the WLAN in this source base station coverage.Preferably, the WLAN coverage information of this source base station includes but not limited to the overlay area of each WLAN in source base station; More preferably, the WLAN coverage information of this source base station also comprises the information such as the WLAN signal intensity in the overlay area of each WLAN of source base station.

Wherein, the WLAN coverage information of target BS represents the coverage information of the WLAN in this target BS coverage.Preferably, the WLAN coverage information of this target BS includes but not limited to the overlay area of each WLAN in target BS; More preferably, the WLAN coverage information of this target BS also comprises the information such as the WLAN signal intensity in the overlay area of each WLAN of target BS.

Wherein, the WLAN coverage information of target BS can be supplied to source base station by target BS.Further, source base station can adopt various ways to obtain its WLAN coverage information.

Such as, the coverage area information of each WLAN in source base station coverage is by manually presetting, then source base station directly obtains the WLAN coverage information of coverage area information as source base station of each WLAN that this is preset.

Again such as, that source base station can report respectively according to each subscriber equipment in its coverage, the positional information of this each subscriber equipment and the measurement result to the WLAN that can detect and/or be connected to, as the signal strength signal intensity and signal power etc. of the WLAN that subscriber equipment can detect, determine the WLAN information on the position of each subscriber equipment, as the signal strength signal intensity and signal power etc. of WLAN, thus extrapolate the WLAN coverage information of source base station

Wherein, the WLAN distribution pattern of subscriber equipment in handoff procedure represents the situation of the WLAN distribution that subscriber equipment may run in handoff procedure.Preferably, the WLAN distribution pattern of subscriber equipment in handoff procedure includes but not limited to:

1) type one: subscriber equipment is current only accesses cellular network, and in the handoff procedure of subscriber equipment, this subscriber equipment needs to there is the accessible WLAN of this subscriber equipment in the coverage of the target BS switched to.

Figure 5 shows that the WLAN distribution pattern of an example is the schematic diagram of type one, wherein, eNB1 is the source base station of subscriber equipment in handoff procedure, eNB2 is the target BS that subscriber equipment needs to switch to, the current cellular network only accessing eNB1 place of subscriber equipment, and in the handoff procedure of subscriber equipment, this subscriber equipment can run into the accessible WLAN of this subscriber equipment of two shown in figure in the coverage of eNB2.

2) type two: the WLAN in the described cellular network of the current access of described subscriber equipment and described source base station coverage, and when described subscriber equipment moves in the coverage of described target BS, it leaves or substantially leaves the coverage of the current WLAN accessed.Wherein, the described coverage substantially leaving the current WLAN accessed represents that subscriber equipment is in the fringe region of WLAN coverage, although subscriber equipment still may can detect this WLAN, the WLAN signal detected is typically not enough to the proper communication supported between subscriber equipment and WLAN.

The WLAN distribution pattern being illustrated in figure 6 an example is the schematic diagram of type two, wherein, eNB1 is the source base station of subscriber equipment in handoff procedure, eNB2 is the target BS that subscriber equipment needs to switch to, WLAN shown in the subscriber equipment current access cellular network at eNB1 place and figure in source base station coverage, and when subscriber equipment moves in the coverage of eNB2, it leaves the coverage of the current WLAN accessed substantially.

3) type three: the WLAN in the described cellular network of the current access of described subscriber equipment and described source base station coverage, and when described subscriber equipment moves in the coverage of described target BS, be still in the coverage of its current WLAN accessed.

The WLAN distribution pattern being illustrated in figure 7 an example is the schematic diagram of type three, wherein, eNB1 is the source base station of subscriber equipment in handoff procedure, eNB2 is the target BS that subscriber equipment needs to switch to, WLAN shown in the subscriber equipment current access cellular network at eNB1 place and figure in source base station coverage, and when subscriber equipment moves in the coverage of eNB2, this subscriber equipment is still in the coverage of the current WLAN accessed.

It should be noted that, the citing of above-mentioned WLAN distribution pattern is only and technical scheme of the present invention is described better, but not limitation of the present invention, it should be appreciated by those skilled in the art that any possible WLAN distribution pattern, all should be within the scope of the present invention.

Particularly, source base station needs the WLAN coverage information of the target BS switched to according to the WLAN coverage information of this source base station and subscriber equipment, determine the situation of the WLAN that the network of the current access of subscriber equipment and subscriber equipment may run in handoff procedure in target BS coverage, thus determine the WLAN distribution pattern of described subscriber equipment in handoff procedure.

Such as, source base station needs the WLAN coverage information of the target BS switched to according to the WLAN coverage information of this source base station and subscriber equipment, determine the current access of subscriber equipment be only cellular network and subscriber equipment can run into the accessible WLAN of this subscriber equipment in handoff procedure in target BS coverage, then the WLAN distribution pattern of source base station determination subscriber equipment in handoff procedure is type one.

It should be noted that, above-mentioned citing is only and technical scheme of the present invention is described better, but not limitation of the present invention, those skilled in the art should understand that, any WLAN coverage information according to source base station and subscriber equipment need the WLAN coverage information of the target BS switched to, determine the implementation of the WLAN distribution pattern of subscriber equipment in handoff procedure, all should be within the scope of the present invention.

In step s 102, source base station, according to described WLAN distribution pattern, needs the target BS switched to send the WLAN relevant information of described subscriber equipment to described subscriber equipment.It should be noted that, source base station can add the WLAN relevant information of subscriber equipment in handover request; Or the WLAN relevant information of subscriber equipment can be sent to target BS together with handover request by source base station.

Wherein, the WLAN relevant information of subscriber equipment represents the information relevant to the WLAN that subscriber equipment can detect.Preferably, the WLAN relevant information of subscriber equipment includes but not limited to the identification information, signal strength signal intensity, channel power etc. of current each WLAN that can detect of subscriber equipment.

As a kind of preferred version, for kind of the WLAN distribution pattern of three described in abovementioned steps S101, when WLAN distribution pattern be type for the moment, WLAN relevant information comprise user equipment to report, it is to the measurement result of the WLAN in its target BS coverage accessible in handoff procedure; When WLAN distribution pattern is type two, WLAN relevant information comprises the stream information of the WLAN of the current access of subscriber equipment; When WLAN distribution pattern is type three, WLAN relevant information comprises the measurement result of WLAN and the stream information of WLAN.

Wherein, the measurement result of the WLAN of user equipment to report comprises the measurement result of the WLAN that subscriber equipment can detect it and/or be connected to, and subscriber equipment can perform the step that this reports the measurement result of WLAN before subsequent step S108.Preferably, the measurement result of WLAN includes but not limited to following at least one item:

1) identification information, as the WLAN SSID(service set identifier for unique identification WLAN, Service Set Identifier);

2) signal strength information, as the WLAN RSSI(received signal strength indicator of the signal strength signal intensity for representing WLAN, Received Signal Strength Indicator);

3) channel power information, the WLAN RCPI(receive channel power as the channel power for representing WLAN indicates, Received Channel Power Indicator);

4) signal and noise information, as the WLANRSNI(Received signal strength of the signal for representing WLAN and noise and noise indicate, Received Signal to Noise Indicator).

Preferably, subscriber equipment at least can report the WLAN measurement result of this subscriber equipment in a case where to source base station:

1) subscriber equipment periodically reports the WLAN measurement result of this subscriber equipment.

Wherein, source base station can be the report cycle of all user device configuration WLAN measurement results of this source base station of access, then subscriber equipment periodically reports the WLAN measurement result of this subscriber equipment according to the report cycle that source base station configures.

2) when meeting preset trigger condition, its WLAN measurement result of user equipment to report.Wherein, described preset trigger condition comprise any predefined, can be used for the condition that activated user equipment reports the measurement result of WLAN.

Such as, preset trigger condition is that the measurement result of certain WLAN parameter 1 exceedes predetermined threshold, then when subscriber equipment determines that the measurement result of its this WLAN parameter 1 measured exceedes predetermined threshold, subscriber equipment reports the WLAN measurement result of this subscriber equipment to source base station, wherein, described predetermined threshold can by define for source base station and to send to subscriber equipment.Preferably, source base station can be type a period of time in WLAN distribution pattern, and measurement result preset trigger condition being set to certain WLAN parameter exceedes predetermined threshold.As another example, when WLAN distribution pattern is type two, preset trigger condition can be set to the measurement result of certain WLAN parameter lower than another predetermined threshold.

Alternatively, subscriber equipment also when receiving the WLAN measurement request from source base station, can report its WLAN measurement result.In the case, source base station sends WLAN to subscriber equipment and measures request, wherein, described WLAN measures request and carries out measurement and report measurement results for asking subscriber equipment to the WLAN in its described target BS coverage accessible in handoff procedure, preferably, the described WLAN request of measuring comprises needs and carries out WLAN parameter that the identification information of the WLAN measured and needs carry out measuring as RSSI; When then subscriber equipment receives the WLAN measurement request from source base station, according to this WLAN request of measuring, its WLAN in target BS coverage accessible in handoff procedure is measured, and report WLAN measurement result to source base station.

Wherein, the stream information of described WLAN represents the information of the business data flow between subscriber equipment and WLAN; Wherein, the stream information of described WLAN includes but not limited to the traffic data rate, service priority etc. between subscriber equipment and WLAN; The stream information of this WLAN can be used for controlling the WLAN stream of subscriber equipment by target BS.Wherein, source base station can adopt various ways to obtain the stream information of WLAN.Such as, source base station can be measured in request at WLAN and ask subscriber equipment that the stream information of WLAN is reported this source base station as WLAN measurement result; Again such as, source base station directly obtains the stream information of WLAN by the WLAN monitored in this source base station coverage; Again such as, source base station, when Business Stream set up by order subscriber equipment and WLAN, directly obtains this stream information.

Particularly, the WLAN distribution pattern that source base station is determined in step S101 according to it, determines the WLAN relevant information of subscriber equipment, and needs the target BS switched to send determined WLAN relevant information to this subscriber equipment.

Such as, in step S101, the WLAN distribution pattern of source base station determination subscriber equipment in handoff procedure is the type one shown in Fig. 5; In step s 102, source base station is according to type one, determine the measurement result of that the WLAN relevant information of subscriber equipment is user equipment to report, that it runs in handoff procedure in target BS coverage two accessible WLAN, and need the target BS switched to send the measurement result of these two WLAN to subscriber equipment.

Again such as, in step S101, the WLAN distribution pattern of source base station determination subscriber equipment in handoff procedure is the type two shown in Fig. 6; In step s 102, source base station is according to type two, determine that the WLAN relevant information of subscriber equipment is the stream information of the current WLAN accessed of subscriber equipment, and need the target BS switched to send the stream information of the current WLAN accessed of subscriber equipment to subscriber equipment.

Again such as, in step S101, the WLAN distribution pattern of source base station determination subscriber equipment in handoff procedure is the type three shown in Fig. 7; In step s 102, source base station is according to type three, determine that the WLAN relevant information of subscriber equipment comprises the stream information of the current WLAN accessed of subscriber equipment and the WLAN measurement result carrying out measuring gained to its current WLAN accessed of user equipment to report, and need the target BS switched to send the current stream information of the WLAN accessed of subscriber equipment and the measurement result of this WLAN to subscriber equipment.

It should be noted that, above-mentioned citing is only and technical scheme of the present invention is described better, but not limitation of the present invention, those skilled in the art should understand that, any according to WLAN distribution pattern, the target BS switched to is needed to send the implementation of determined WLAN relevant information to subscriber equipment, all should be within the scope of the present invention.

In step s 103, the target BS of subscriber equipment in handoff procedure receives WLAN relevant information that the source base station of subscriber equipment in handoff procedure sends, this subscriber equipment.

Such as, the target BS of subscriber equipment in handoff procedure receives WLAN measurement result that the source base station of subscriber equipment in handoff procedure sends, this subscriber equipment.

In step S104, target BS is according to the WLAN coverage information of received WLAN relevant information and target BS, and determine WLAN bind command, this WLAN bind command can be used in indicating the WLAN join dependency of described subscriber equipment to operate.

Wherein, described WLAN join dependency operation can be used in equipment for indicating user and performs the operation with WLAN join dependency.Preferably, the operation of WLAN join dependency includes but not limited to following at least one item:

1) WLAN action type.Wherein, described WLAN action type is used to indicate the attended operation between subscriber equipment and WLAN, as disconnect with the connection of WLAN, maintain and WLAN connection, be connected to new WLAN etc.; Preferably, when the instruction of WLAN action type is connected to new WLAN, described WLAN action type also can comprise the identification information of this new WLAN.

2) flow control information of WLAN.Wherein, described flow control information represents the information for the business data flow in control WLAN; Preferably, described flow control information can comprise the information of business data flow that target BS is determined, that need WLAN to process.

Particularly, target BS is according to received WLAN relevant information, and the WLAN coverage information of combining target base station, determine the WLAN bind command that equipment for indicating user performs the operation of WLAN join dependency.

Such as, for the distribution situation between the source base station shown in Fig. 5, target BS, WLAN, in step s 103, this subscriber equipment that the source base station of target BS reception subscriber equipment in handoff procedure sends carries out measuring the WLAN measurement result of gained to the WLAN of two shown in figure; In step S104, target BS receives the WLAN measurement result of subscriber equipment according to it, and the WLAN coverage information of combining target base station, determine that subscriber equipment needs the WLAN of access, and determine the WLAN bind command of the identification information of the WLAN comprising the access of these needs.

Again such as, for the distribution situation between the source base station shown in Fig. 6, target BS, WLAN, in step s 103, target BS receives the stream information of the WLAN that the source base station of subscriber equipment in handoff procedure sends; In step S104, the stream information of the WLAN that target BS receives according to it, and the WLAN coverage information of combining target base station, determine the WLAN bind command that equipment for indicating user disconnects the connection between the current WLAN accessed, and this WLAN bind command comprises the flow control information being used to indicate and the business data flow of WLAN is transferred to target BS to control.

Again such as, for the distribution situation between the source base station shown in Fig. 7, target BS, WLAN, in step s 103, target BS receives the stream information of the WLAN that the source base station of subscriber equipment in handoff procedure sends and this subscriber equipment measures the WLAN measurement result of gained to the carrying out of the current WLAN accessed; In step S104, the stream information of the WLAN that target BS receives according to it and the WLAN measurement result of subscriber equipment, and the WLAN coverage information of combining target base station, determine the WLAN bind command that equipment for indicating user maintains the connection between the current WLAN accessed, and this WLAN bind command comprises the flow control information of the WLAN that the partial data stream being used to indicate WLAN is transferred to target BS to control.

As a kind of preferred version, the WLAN measurement result of the subscriber equipment that target BS can receive according to it, generates optional WLAN list, and in conjunction with other WLAN information, determines the best WLAN being most suitable for subscriber equipment, and generates corresponding WLAN bind command.Wherein, other WLAN information described represent other WLAN information beyond WLAN measurement result and WLAN coverage information; Preferably, other WLAN information described include but not limited to the load information, backhaul quality information etc. of each WLAN.

Such as, the RSSI of each WLAN in the WLAN measurement result of the subscriber equipment that target BS receives according to it, generate an optional WLAN list, each WLAN in this optional WLAN list arranges from high in the end according to its RSSI, target BS is according to this optional WLAN list and in conjunction with the load information of each WLAN, one of them WLAN in this optional WLAN list can be selected as the best WLAN being most suitable for subscriber equipment, and generate the WLAN bind command corresponding with this best WLAN.

It should be noted that, above-mentioned citing is only and technical scheme of the present invention is described better, but not limitation of the present invention, those skilled in the art should understand that, any WLAN coverage information according to WLAN relevant information and target BS, determine the implementation of WLAN bind command, all should be within the scope of the present invention.

In step S105, the WLAN bind command that target BS is determined sends to source base station.

It should be noted that, target BS can add described WLAN bind command in the switch acknowledgment message sent to source base station; Or described WLAN bind command can be sent to source base station together with switch acknowledgment message by target BS.

In step s 106, the WLAN bind command of source base station receiving target base station feedback.

Such as, the switch acknowledgment message that source base station receiving target base station sends, and the WLAN bind command of extracting target BS feedback from this switch acknowledgment message.

In step s 107, described WLAN bind command is sent to subscriber equipment by source base station.

It should be noted that, source base station can be reshuffled in (RRCConnect Recon figura tion) message in the RRC connection sent to subscriber equipment and be added described WLAN bind command; Or described WLAN bind command can be connected reconfiguration message together with RRC and send to subscriber equipment by source base station.

In step S108, subscriber equipment receives that source base station sends, that this subscriber equipment needs the target BS instruction switched to WLAN bind command.

Such as, subscriber equipment receives the RRC connection reconfiguration message that source base station sends, and connects reconfiguration message the WLAN bind command of extracting the target BS instruction that subscriber equipment needs to switch to from this RRC.

In step S109, subscriber equipment performs corresponding WLAN according to the WLAN bind command received and operates.

Such as, the WLAN bind command instruction WLAN action type that subscriber equipment receives is be connected to new WLAN, then subscriber equipment is according to the identification information of the new WLAN in WLAN bind command, performs the operation of this new WLAN of access.

Again such as, the WLAN bind command instruction WLAN action type that subscriber equipment receives is off the connection with the WLAN accessed, and the flow control information of WLAN indicate this to access WLAN in all business data flows be all converted to cellular network to control, then subscriber equipment disconnects the connection with former WLAN according to this WLAN bind command, and transfers to cellular network to control all business data flows in former WLAN.

Again such as, the WLAN bind command instruction WLAN action type that subscriber equipment receives is maintain the connection with the WLAN accessed, and the instruction of the flow control information of WLAN needs the partial service data flow transferring to cellular network process, then subscriber equipment is according to the connection between this WLAN bind command maintenance with the WLAN accessed, and transfers from WLAN the partial service data flow of cellular network process that needs to transfer to indicated in WLAN bind command to cellular network control.

It should be noted that, above-mentioned citing is only and technical scheme of the present invention is described better, but not limitation of the present invention, those skilled in the art should understand that, the WLAN bind command that any basis receives performs the implementation that corresponding WLAN operates, all should be within the scope of the present invention.

According to the present embodiment method, in the heterogeneous network that cellular network and WLAN coexist, the connection that can control between subscriber equipment and WLAN by cellular network, and when subscriber equipment needs to switch to target BS by source base station, target BS can before subscriber equipment be switched to this target BS, the join dependency that equipment for indicating user performs between WLAN operates, thus the delay of the access of WLAN when being reduced in the connection between cellular network control subscriber equipment and WLAN, the QoS improving subscriber equipment experiences.

Fig. 2 is the schematic flow sheet determining the method for the connection between WLAN in heterogeneous network of another preferred embodiment of the present invention.Wherein, the method for the present embodiment realizes mainly through subscriber equipment and base station; Wherein, described heterogeneous network comprises cellular network and WLAN, and described base station is the base station in cellular network; Wherein, described subscriber equipment include but not limited to panel computer, smart mobile phone, PDA etc. any can with the subscriber equipment of base station communication.

In the present embodiment, carry out assisting user equipment primarily of base station and carry out WLAN connection.

Step S201, step S202, step S203 and step S204 is comprised according to the method for the present embodiment.

In step s 201, when subscriber equipment needs to switch to target BS from source base station, target BS sends the relevant information of the WLAN in the cellular network relevant information of this target BS and target BS coverage to source base station.It should be noted that, target BS can add the relevant information of the WLAN in the cellular network relevant information of this target BS and target BS coverage in the switch acknowledgment message sent to source base station; Or the relevant information of described cellular-related information and described WLAN can be sent to source base station together with switch acknowledgment message by target BS.

Wherein, the cellular network relevant information of described target BS represents the information relevant to the cellular network of target BS; Wherein, the cellular network relevant information of described target BS include but not limited to target BS load information, based on RSRP(Reference Signal Received Power, ReferenceSignal Received Power) RAN(wireless access network, Radio Access Network) select threshold value etc.

Wherein, the relevant information of the WLAN in described target BS coverage represents the information relevant to the WLAN in target BS coverage; Wherein, the relevant information of the WLAN in target BS coverage includes but not limited to the channel utilization, backhaul threshold value, RSSI threshold value, RCPI threshold value etc. of WLAN.

In step S202, the relevant information of the WLAN in cellular network relevant information that target BS provides by source base station, this target BS and target BS coverage is transmitted to described subscriber equipment.

It should be noted that, source base station can the RRC that sends to subscriber equipment connect reshuffle in add the relevant information of the WLAN in the cellular network relevant information of target BS and target BS coverage; Or together with switching, the relevant information of the WLAN in the cellular network relevant information of target BS and target BS coverage can be confirmed that RRC connects reconfiguration message and sends to subscriber equipment by source base station.

In step S203, when described subscriber equipment needs to switch to target BS from source base station, subscriber equipment receives the relevant information of the WLAN in cellular network relevant information that provide from source base station, target BS and target BS coverage.

Such as, when subscriber equipment needs to switch to target BS from source base station, the RRC that subscriber equipment receives from source base station connects reconfiguration message, and connects the relevant information of the WLAN in cellular network relevant information that extraction source base station reconfiguration message provides, target BS and target BS coverage from this RRC.

It should be noted that, above-mentioned citing is only and technical scheme of the present invention is described better, but not limitation of the present invention, those skilled in the art should understand that, it is any when described subscriber equipment needs to switch to target BS from source base station, the implementation of the relevant information of the WLAN in cellular network relevant information that provide from source base station, target BS and target BS coverage is provided, all should be within the scope of the present invention.

In step S204, subscriber equipment is according to the relevant information of described cellular network relevant information and described WLAN, and in conjunction with described subscriber equipment, the WLAN measurement result measuring gained is carried out to the WLAN in described target BS coverage, determine the WLAN needing to connect.

Particularly, subscriber equipment is according to the relevant information of the cellular network relevant information received and WLAN, and in conjunction with subscriber equipment, the WLAN measurement result measuring gained is carried out to the WLAN in target BS coverage, each WLAN in target BS coverage is assessed, determines the connection between WLAN.

Such as, for the schematic diagram shown in Fig. 5, subscriber equipment is according to the relevant information of its cellular-related information received and WLAN, and in conjunction with subscriber equipment, the WLAN measurement result measuring gained is carried out to the WLAN of two shown in figure, a WLAN being suitable for subscriber equipment access can be selected from the WLAN of two in target BS coverage.

Again such as, for the schematic diagram shown in Fig. 6, subscriber equipment is according to the relevant information of its cellular-related information received and WLAN, and in conjunction with subscriber equipment, the WLAN measurement result measuring gained is carried out to the WLAN shown in figure, can determine that subscriber equipment needs to disconnect the connection between the WLAN accessed, and the business data flow in this WLAN is all transferred to target BS to control.

Again such as, for the schematic diagram shown in Fig. 7, subscriber equipment is according to the relevant information of its cellular-related information received and WLAN, and in conjunction with subscriber equipment, the WLAN measurement result measuring gained is carried out to the WLAN shown in figure, based on ANDSF(Network finding and the selection function of subscriber equipment, Access Network Discovery And SelectionFunction) strategy, carry out the load performance of assessment objective base station, and determine the connection maintaining this subscriber equipment WLAN to that indicated in the drawings, and the partial service data flow in this WLAN is transferred to target BS to control.

It should be noted that, above-mentioned citing is only and technical scheme of the present invention is described better, but not limitation of the present invention, those skilled in the art should understand that, any relevant information according to described cellular network relevant information and described WLAN, and in conjunction with described subscriber equipment, the WLAN measurement result measuring gained is carried out to the WLAN in described target BS coverage, and determine the implementation needing the WLAN connected, all should be within the scope of the present invention.

According to the method for the present embodiment, in the heterogeneous network that cellular network and WLAN coexist, assisting user equipment can be carried out by base station and carry out WLAN connection, the relevant information of the WLAN in the cellular-related information that subscriber equipment can need the target BS that switch to provide according to it and target BS coverage, and in conjunction with this subscriber equipment, the WLAN in target BS coverage is carried out measuring the WLAN measurement result of gained to determine the connection between this subscriber equipment and WLAN.

Fig. 3 is the system configuration schematic diagram determining the connection between WLAN in heterogeneous network of a preferred embodiment of the invention.This system comprises subscriber equipment, source base station and target BS; Wherein, described subscriber equipment comprises the first jockey, and described first jockey comprises first receiving device 1 and jockey 2; Wherein, described source base station comprises the first servicing unit, and described first servicing unit comprises the first determining device 3, first dispensing device 4, second receiving system 5 and the second dispensing device 6; Wherein, described target BS comprises the second servicing unit, and described second servicing unit comprises the 3rd receiving system 7, second determining device 8 and the 4th dispensing device 9.

First determining device 3 of source base station needs the WLAN coverage information of the target BS switched to according to the WLAN coverage information of source base station and subscriber equipment, determine the WLAN distribution pattern of this subscriber equipment in handoff procedure.

Wherein, the WLAN coverage information of target BS can be supplied to source base station by target BS.Further, the first determining device 3 of source base station can adopt various ways to obtain the WLAN coverage information of this source base station.

Such as, the coverage area information of each WLAN in source base station coverage is by manually presetting, then the first determining device 3 directly obtains the WLAN coverage information of coverage area information as source base station of this each WLAN be preset.

Again such as, that first determining device 3 can report respectively according to each subscriber equipment in source base station coverage, the positional information of this each subscriber equipment and the measurement result to the WLAN that can detect and/or be connected to, as the signal strength signal intensity and signal power etc. of the WLAN that subscriber equipment can detect, determine the WLAN information on the position of each subscriber equipment, as the signal strength signal intensity and signal power etc. of WLAN, thus extrapolate the WLAN coverage information of source base station.

Particularly, first determining device 3 of source base station needs the WLAN coverage information of the target BS switched to according to the WLAN coverage information of this source base station and subscriber equipment, determine the situation of the WLAN that the network of the current access of subscriber equipment and subscriber equipment may run in handoff procedure in target BS coverage, thus determine the WLAN distribution pattern of described subscriber equipment in handoff procedure.

Such as, first determining device 3 needs the WLAN coverage information of the target BS switched to according to the WLAN coverage information of this source base station and subscriber equipment, determine the current access of subscriber equipment be only cellular network and subscriber equipment can run into the accessible WLAN of this subscriber equipment in handoff procedure in target BS coverage, then the first determining device 3 determines that the WLAN distribution pattern of subscriber equipment in handoff procedure is type one.

First dispensing device 4 of source base station, according to described WLAN distribution pattern, needs the target BS switched to send the WLAN relevant information of described subscriber equipment to described subscriber equipment.It should be noted that, the first dispensing device 4 can add the WLAN relevant information of subscriber equipment in handover request; Or the WLAN relevant information of subscriber equipment can be sent to target BS together with handover request by the first dispensing device 4.

As a kind of preferred version, for aforementioned three kinds of WLAN distribution patterns, when WLAN distribution pattern be type for the moment, WLAN relevant information comprise user equipment to report, it is to the measurement result of the WLAN in its target BS coverage accessible in handoff procedure; When WLAN distribution pattern is type two, WLAN relevant information comprises the stream information of the WLAN of the current access of subscriber equipment; When WLAN distribution pattern is type three, WLAN relevant information comprises the measurement result of WLAN and the stream information of WLAN.

Wherein, the measurement result of the WLAN of user equipment to report comprises the measurement result of the WLAN that subscriber equipment can detect it and/or be connected to.Preferably, the measurement result of WLAN includes but not limited to following at least one item:

Preferably, the first jockey of subscriber equipment also comprises reporting device (not shown), and this reporting device can perform the operation of the measurement result reporting WLAN to source base station before the first receiving device 1 of subscriber equipment.Described reporting device at least can report the WLAN measurement result of this subscriber equipment in a case where to source base station:

1) reporting device of subscriber equipment periodically reports the WLAN measurement result of this subscriber equipment.

Wherein, source base station can be the report cycle of all user device configuration WLAN measurement results of this source base station of access, then the reporting device of subscriber equipment periodically reports the WLAN measurement result of this subscriber equipment according to the report cycle that source base station configures.

2) when meeting preset trigger condition, the reporting device of subscriber equipment reports its WLAN measurement result.Wherein, described preset trigger condition comprise any predefined, can be used for the condition that activated user equipment reports the measurement result of WLAN.

Such as, preset trigger condition is that the measurement result of certain WLAN parameter 1 exceedes predetermined threshold, then when subscriber equipment determines that the measurement result of its this WLAN parameter 1 measured exceedes predetermined threshold, the reporting device of subscriber equipment reports the WLAN measurement result of this subscriber equipment to source base station, wherein, described predetermined threshold can by define for source base station and to send to subscriber equipment.Preferably, source base station can be type a period of time in WLAN distribution pattern, and measurement result preset trigger condition being set to certain WLAN parameter exceedes predetermined threshold.As another example, when WLAN distribution pattern is type two, preset trigger condition can be set to the measurement result of certain WLAN parameter lower than another predetermined threshold.

Alternatively, the reporting device of subscriber equipment also when receiving the WLAN measurement request from source base station, can report its WLAN measurement result.In the case, source base station also comprises the 3rd dispensing device (not shown), 3rd dispensing device sends WLAN to subscriber equipment and measures request, wherein, described WLAN measures request and carries out measurement and report measurement results for asking subscriber equipment to the WLAN in its described target BS coverage accessible in handoff procedure, preferably, the described WLAN request of measuring comprises needs and carries out WLAN parameter that the identification information of the WLAN measured and needs carry out measuring as RSSI; When then the reporting device of subscriber equipment receives the WLAN measurement request from source base station, according to this WLAN request of measuring, its WLAN in target BS coverage accessible in handoff procedure is measured, and report WLAN measurement result to source base station.

Particularly, the WLAN distribution pattern that the first dispensing device 4 of source base station is determined according to the first determining device 3, determines the WLAN relevant information of subscriber equipment, and needs the target BS switched to send determined WLAN relevant information to this subscriber equipment.

Such as, the first determining device 3 of source base station determines that the WLAN distribution pattern of subscriber equipment in handoff procedure is for the type one shown in Fig. 5; First dispensing device 4 of source base station is according to type one, determine the measurement result of that the WLAN relevant information of subscriber equipment is user equipment to report, that it runs in handoff procedure in target BS coverage two accessible WLAN, and need the target BS switched to send the measurement result of these two WLAN to subscriber equipment.

Again such as, the first determining device 3 of source base station determines that the WLAN distribution pattern of subscriber equipment in handoff procedure is for the type two shown in Fig. 6; First dispensing device 4 of source base station is according to type two, determine that the WLAN relevant information of subscriber equipment is the stream information of the current WLAN accessed of subscriber equipment, and need the target BS switched to send the stream information of the current WLAN accessed of subscriber equipment to subscriber equipment.

Again such as, the first determining device 3 of source base station determines that the WLAN distribution pattern of subscriber equipment in handoff procedure is for the type three shown in Fig. 7; First dispensing device 4 of source base station is according to type three, determine that the WLAN relevant information of subscriber equipment comprises the stream information of the current WLAN accessed of subscriber equipment and the WLAN measurement result carrying out measuring gained to its current WLAN accessed of user equipment to report, and need the target BS switched to send the current stream information of the WLAN accessed of subscriber equipment and the measurement result of this WLAN to subscriber equipment.

3rd receiving system 7 of the target BS of subscriber equipment in handoff procedure receives WLAN relevant information that the source base station of subscriber equipment in handoff procedure sends, this subscriber equipment.

Such as, the 3rd receiving system 7 of the target BS of subscriber equipment in handoff procedure receives WLAN measurement result that the source base station of subscriber equipment in handoff procedure sends, this subscriber equipment.

Second determining device 8 of target BS is according to the WLAN coverage information of received WLAN relevant information and target BS, and determine WLAN bind command, this WLAN bind command can be used in indicating the WLAN join dependency of described subscriber equipment to operate.

Particularly, the second determining device 8 of target BS is according to received WLAN relevant information, and the WLAN coverage information of combining target base station, determine the WLAN bind command that equipment for indicating user performs the operation of WLAN join dependency.

Such as, for the distribution situation between the source base station shown in Fig. 5, target BS, WLAN, the 3rd receiving system 7 of target BS receives this subscriber equipment that the source base station of subscriber equipment in handoff procedure send carries out measuring gained WLAN measurement result to the WLAN of two shown in figure; The WLAN measurement result of the subscriber equipment that the second determining device 8 of target BS receives according to the 3rd receiving system 7, and the WLAN coverage information of combining target base station, determine that subscriber equipment needs the WLAN of access, and determine the WLAN bind command of the identification information of the WLAN comprising the access of these needs.

Again such as, for the distribution situation between the source base station shown in Fig. 6, target BS, WLAN, the 3rd receiving system 7 of target BS receives the stream information of the WLAN that the source base station of subscriber equipment in handoff procedure sends; The stream information of the WLAN that the second determining device 8 of target BS receives according to the 3rd receiving system 7, and the WLAN coverage information of combining target base station, determine the WLAN bind command that equipment for indicating user disconnects the connection between the current WLAN accessed, and this WLAN bind command comprises the flow control information being used to indicate and the business data flow of WLAN is transferred to target BS to control.

Again such as, for the distribution situation between the source base station shown in Fig. 7, target BS, WLAN, the 3rd receiving system 7 of target BS receives the stream information of the WLAN that the source base station of subscriber equipment in handoff procedure sends and this subscriber equipment measures the WLAN measurement result of gained to the carrying out of the current WLAN accessed; The stream information of WLAN that second determining device 8 of target BS receives according to the 3rd receiving system 7 and the WLAN measurement result of subscriber equipment, and the WLAN coverage information of combining target base station, determine the WLAN bind command that equipment for indicating user maintains the connection between the current WLAN accessed, and this WLAN bind command comprises the flow control information of the WLAN that the partial data stream being used to indicate WLAN is transferred to target BS to control.

As a kind of preferred version, the WLAN measurement result of the subscriber equipment that the second determining device 8 of target BS can receive according to the 3rd receiving system 7, generate optional WLAN list, and in conjunction with other WLAN information, determine the best WLAN being most suitable for subscriber equipment, and generate corresponding WLAN bind command.Wherein, other WLAN information described represent other WLAN information beyond WLAN measurement result and WLAN coverage information; Preferably, other WLAN information described include but not limited to the load information, backhaul quality information etc. of each WLAN.

Such as, the RSSI of each WLAN in the WLAN measurement result of the subscriber equipment that the second determining device 8 of target BS receives according to the 3rd receiving system 7, generate an optional WLAN list, each WLAN in this optional WLAN list arranges from high in the end according to its RSSI, second determining device 8 is according to this optional WLAN list and in conjunction with the load information of each WLAN, one of them WLAN in this optional WLAN list can be selected as the best WLAN being most suitable for subscriber equipment, and generate the WLAN bind command corresponding with this best WLAN.

The WLAN bind command determined is sent to source base station by target BS the 4th dispensing device 9.

It should be noted that, the 4th dispensing device 9 of target BS can add described WLAN bind command in the switch acknowledgment message sent to source base station; Or described WLAN bind command can be sent to source base station together with switch acknowledgment message by the 4th dispensing device 9 of target BS.

The WLAN bind command of the second receiving system 5 receiving target base station feedback of source base station.

Such as, the switch acknowledgment message of the second receiving system 5 receiving target base station transmission of source base station, and from this switch acknowledgment message, extract the WLAN bind command of target BS feedback.

Described WLAN bind command is sent to subscriber equipment by the second dispensing device 6 of source base station.

It should be noted that, the second dispensing device 6 of source base station can be reshuffled in (RRCConnect Recon figura tion) message in the RRC connection sent to subscriber equipment and be added described WLAN bind command; Or described WLAN bind command can be connected reconfiguration message together with RRC and send to subscriber equipment by the second dispensing device 6 of source base station.

The first receiving device 1 of subscriber equipment receives that source base station sends, that this subscriber equipment needs the target BS instruction switched to WLAN bind command.

Such as, the first receiving device 1 of subscriber equipment receives the RRC connection reconfiguration message of source base station transmission, and connects reconfiguration message the WLAN bind command of extracting the target BS instruction that subscriber equipment needs to switch to from this RRC.

The jockey 2 of subscriber equipment performs corresponding WLAN according to the WLAN bind command received and operates.

Such as, the WLAN bind command instruction WLAN action type that the first receiving device 1 of subscriber equipment receives is be connected to new WLAN, then the jockey 2 of subscriber equipment is according to the identification information of the new WLAN in WLAN bind command, performs the operation of this new WLAN of access.

Again such as, the WLAN bind command instruction WLAN action type that the first receiving device 1 of subscriber equipment receives is off the connection with the WLAN accessed, and the flow control information of WLAN indicate this to access WLAN in all business data flows be all converted to cellular network to control, then the jockey 2 of subscriber equipment disconnects the connection with former WLAN according to this WLAN bind command, and transfers to cellular network to control all business data flows in former WLAN.

Again such as, the WLAN bind command instruction WLAN action type that the first receiving device 1 of subscriber equipment receives is maintain the connection with the WLAN accessed, and the instruction of the flow control information of WLAN needs the partial service data flow transferring to cellular network process, then the jockey 2 of subscriber equipment is according to the connection between this WLAN bind command maintenance with the WLAN accessed, and transfers from WLAN the partial service data flow of cellular network process that needs to transfer to indicated in WLAN bind command to cellular network control.

According to the present embodiment system, in the heterogeneous network that cellular network and WLAN coexist, the connection that can control between subscriber equipment and WLAN by cellular network, and when subscriber equipment needs to switch to target BS by source base station, target BS can before subscriber equipment be switched to this target BS, the join dependency that equipment for indicating user performs between WLAN operates, thus the delay of the access of WLAN when being reduced in the connection between cellular network control subscriber equipment and WLAN, the QoS improving subscriber equipment experiences.

Fig. 4 is the system schematic determining the connection between WLAN in heterogeneous network of another preferred embodiment of the present invention.Wherein, this system comprises subscriber equipment, source base station and target BS; Wherein, described subscriber equipment comprises the second jockey, and described second jockey comprises the 4th receiving system 10 and the 3rd determining device 11; Wherein, described source base station comprises retransmission unit 12; Wherein, described target BS comprises the 5th dispensing device 13.

When subscriber equipment needs to switch to target BS from source base station, the 5th dispensing device 13 in target BS sends the relevant information of the WLAN in the cellular network relevant information of this target BS and target BS coverage to source base station.It should be noted that, the 5th dispensing device 13 of target BS can add the relevant information of the WLAN in the cellular network relevant information of this target BS and target BS coverage in the switch acknowledgment message sent to source base station; Or the relevant information of described cellular-related information and described WLAN can be sent to source base station together with switch acknowledgment message by the 5th dispensing device 13 of target BS.

The relevant information of the WLAN in cellular network relevant information that target BS provides by the retransmission unit 12 of source base station, this target BS and target BS coverage is transmitted to described subscriber equipment.

It should be noted that, the retransmission unit 12 of source base station can the RRC sent to subscriber equipment connect reshuffle in add the relevant information of the WLAN in the cellular network relevant information of target BS and target BS coverage; Or together with switching, the relevant information of the WLAN in the cellular network relevant information of target BS and target BS coverage can be confirmed that RRC connects reconfiguration message and sends to subscriber equipment by the retransmission unit 12 of source base station.

When described subscriber equipment needs to switch to target BS from source base station, the 4th receiving system 10 of subscriber equipment receives the relevant information of the WLAN in cellular network relevant information that provide from source base station, target BS and target BS coverage.

Such as, when subscriber equipment needs to switch to target BS from source base station, the RRC that 4th receiving system 10 of subscriber equipment receives from source base station connects reconfiguration message, and connects the relevant information of the WLAN in cellular network relevant information that extraction source base station reconfiguration message provides, target BS and target BS coverage from this RRC.

3rd determining device 11 of subscriber equipment is according to the relevant information of described cellular network relevant information and described WLAN, and in conjunction with described subscriber equipment, the WLAN measurement result measuring gained is carried out to the WLAN in described target BS coverage, determine the WLAN needing to connect.

Particularly, 3rd determining device 11 of subscriber equipment is according to the relevant information of the cellular network relevant information received and WLAN, and in conjunction with subscriber equipment, the WLAN measurement result measuring gained is carried out to the WLAN in target BS coverage, each WLAN in target BS coverage is assessed, determines the connection between WLAN.

Such as, for the schematic diagram shown in Fig. 5,3rd determining device 11 of subscriber equipment is according to the relevant information of its cellular-related information received and WLAN, and in conjunction with subscriber equipment, the WLAN measurement result measuring gained is carried out to the WLAN of two shown in figure, a WLAN being suitable for subscriber equipment access can be selected from the WLAN of two in target BS coverage.

Again such as, for the schematic diagram shown in Fig. 6,3rd determining device 11 of subscriber equipment is according to the relevant information of its cellular-related information received and WLAN, and in conjunction with subscriber equipment, the WLAN measurement result measuring gained is carried out to the WLAN shown in figure, can determine that subscriber equipment needs to disconnect the connection between the WLAN accessed, and the business data flow in this WLAN is all transferred to target BS to control.

Again such as, for the schematic diagram shown in Fig. 7, 3rd determining device 11 of subscriber equipment is according to the relevant information of its cellular-related information received and WLAN, and in conjunction with subscriber equipment, the WLAN measurement result measuring gained is carried out to the WLAN shown in figure, based on ANDSF(Network finding and the selection function of subscriber equipment, Access Network DiscoveryAnd Selection Function) strategy, carry out the load performance of assessment objective base station, and determine the connection maintaining this subscriber equipment WLAN to that indicated in the drawings, and the partial service data flow in this WLAN is transferred to target BS to control.

According to the system of the present embodiment, in the heterogeneous network that cellular network and WLAN coexist, assisting user equipment can be carried out by base station and carry out WLAN connection, the relevant information of the WLAN in the cellular-related information that subscriber equipment can need the target BS that switch to provide according to it and target BS coverage, and in conjunction with this subscriber equipment, the WLAN in target BS coverage is carried out measuring the WLAN measurement result of gained to determine the connection between this subscriber equipment and WLAN.

It should be noted that the present invention can be implemented in the assembly of software and/or software restraint, such as, device of the present invention can adopt application-specific integrated circuit (ASIC) (ASIC) or any other similar hardware device to realize.In one embodiment, software program of the present invention can perform to realize step mentioned above or function by processor.In addition, steps more of the present invention or function can adopt hardware to realize, such as, as coordinating with processor thus performing the circuit of each step or function.

To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present invention or essential characteristic, the present invention can be realized in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present invention is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the present invention.Any Reference numeral in claim should be considered as the claim involved by limiting.In addition, obviously " comprising " one word do not get rid of other unit or step, odd number does not get rid of plural number.Multiple unit of stating in system claims or device also can be realized by software or hardware by a unit or device.First, second word such as grade is used for representing title, and does not represent any specific order.

Claims

1. in the subscriber equipment of heterogeneous network for determining first jockey of the connection between WLAN, wherein, described heterogeneous network comprises cellular network and WLAN, and this first jockey comprises with lower device:

2. the first jockey according to claim 1, wherein, this first jockey be also included in described first receiving device before executable operations with lower device:

Reporting device, for reporting the WLAN measurement result of described subscriber equipment to described source base station.

3. in the base station of heterogeneous network, determine the first servicing unit of the connection between itself and WLAN for assisting user equipment for one kind, wherein, described heterogeneous network comprises cellular network and WLAN, described base station is the source base station of subscriber equipment in handoff procedure, and this first servicing unit comprises with lower device:

4. the first servicing unit according to claim 3, wherein, described WLAN distribution pattern comprises:

Type one: described subscriber equipment is current only accesses described cellular network, and in the handoff procedure of described subscriber equipment, in the coverage of described target BS, there is the WLAN that described subscriber equipment is accessible;

Type two: the WLAN in the described cellular network of the current access of described subscriber equipment and described source base station coverage, and when described subscriber equipment moves in the coverage of described target BS, it leaves or substantially leaves the coverage of the current WLAN accessed;

Type three: the WLAN in the described cellular network of the current access of described subscriber equipment and described source base station coverage, and when described subscriber equipment moves in the coverage of described target BS, be still in the coverage of its current WLAN accessed.

5. the first servicing unit according to claim 4, wherein, when described WLAN distribution pattern be type for the moment, described WLAN relevant information comprise described user equipment to report, it is to the measurement result of the WLAN in its described target BS coverage accessible in handoff procedure; When described WLAN distribution pattern is type two, described WLAN relevant information comprises the stream information of the WLAN of the current access of described subscriber equipment; When described WLAN distribution pattern is type three, described WLAN relevant information comprises the measurement result of described WLAN and the stream information of described WLAN.

6. the first servicing unit according to claim 4 or 5, wherein, this first servicing unit also comprises with lower device:

3rd dispensing device, measures request for sending WLAN to described subscriber equipment, and this WLAN measures request and carries out measurement and report measurement results for asking subscriber equipment to the WLAN in its described target BS coverage accessible in handoff procedure.

7. in the base station of heterogeneous network, determine the second servicing unit of the connection between itself and WLAN for assisting user equipment for one kind, wherein, described heterogeneous network comprises cellular network and WLAN, described base station is the target BS of subscriber equipment in handoff procedure, and this second servicing unit comprises with lower device:

8. the second servicing unit according to claim 7, wherein, described WLAN join dependency operation comprises following at least one item:

-WLAN action type;

The flow control information of-WLAN.

9. in the subscriber equipment of heterogeneous network for determining a method for the connection between WLAN, wherein, described heterogeneous network comprises cellular network and WLAN, and the method comprises the following steps:

10. in the base station of heterogeneous network, determine the method for the connection between itself and WLAN for assisting user equipment for one kind, wherein, described heterogeneous network comprises cellular network and WLAN, and described base station is the source base station of subscriber equipment in handoff procedure, and the method comprises the following steps:

Described WLAN bind command is sent to described subscriber equipment by t.

11. 1 kinds of methods determining the connection between itself and WLAN in the base station of heterogeneous network for assisting user equipment, wherein, described heterogeneous network comprises cellular network and WLAN, and described base station is the target BS of subscriber equipment in handoff procedure, and the method comprises the following steps:

Described WLAN bind command is sent to described source base station by z.

12. 1 kinds of heterogeneous networks, wherein, described heterogeneous network comprises cellular network and WLAN, subscriber equipment in described heterogeneous network comprises the first jockey as claimed in claim 1 or 2, and the base station in described heterogeneous network comprises the first servicing unit according to any one of claim 3 to 6 and/or the second servicing unit as claimed in claim 7 or 8.

13. 1 kinds in the subscriber equipment of heterogeneous network for determining the second jockey of the connection between WLAN, wherein, described heterogeneous network comprises cellular network and WLAN, and this second jockey comprises with lower device:

14. 1 kinds in the subscriber equipment of heterogeneous network for determining the method for the connection between WLAN, wherein, described heterogeneous network comprises cellular network and WLAN, and the method comprises the following steps:

15. 1 kinds of heterogeneous networks, wherein, described heterogeneous network comprises cellular network and WLAN, and the subscriber equipment in described heterogeneous network comprises the second jockey as described in claim 13, and the base station in described heterogeneous network comprises with lower device: