WO2012155684A1

WO2012155684A1 - Link processing method, device and system

Info

Publication number: WO2012155684A1
Application number: PCT/CN2012/072953
Authority: WO
Inventors: 刁兆雯; 代言非; 朱佩蘅; 谭然
Original assignee: 中兴通讯股份有限公司
Priority date: 2011-08-09
Filing date: 2012-03-23
Publication date: 2012-11-22
Also published as: CN102932820A

Abstract

The present invention provides a link processing method, device and system. The method comprises: a local end acquiring a performance parameter of a current physical uplink; determining the link status of the current physical uplink according to the performance parameter; and constructing a link detection frame carrying link status information, and sending the link detection frame to a peer end through a physical downlink. The number of bits occupied by the link status information corresponds to the number of physical uplinks from the peer end to the local end. According to the technical solution of the present invention, a faulty transmission link can be handled in time, thereby avoiding packet loss in link transmission, and improving the reliability of link data transmission.

Description

Link processing method, device and system

The present invention relates to the field of communications technologies, and in particular, to a link processing method, apparatus, and system. Background technique

At present, the data transmission mode of the Abis port between the base transceiver station and the base station controller of the GSM (Global System for Mobile communications) is mainly TDM (Time Division Multiplexing). E E1 is used as the transmission medium, and the bandwidth of a pair of uplink and downlink E1 is 2.048 Mbps. For a station, when transmitting control plane data and service plane data, the bandwidth of a pair of uplink and downlink E1 is insufficient, and multiple pairs of transmissions need to be configured. Independent uplink and downlink E1 to transmit services. A poor quality of uplink or downlink transmission of a pair of E1s will cause the transmission of the entire Abis interface link to deteriorate, thereby affecting network performance.

In the prior art, a transmission link is detected by transmitting a link detection frame. In order to avoid occupying too much bandwidth, the length of the link detection frame is usually short, so that the quality of the transmission link cannot be accurately detected under different error rate conditions. For example, the Abis interface uses the LAPD (Link Access Procedure of D-Channel) protocol to control the number of control planes. Since the length of the link detection frame is relatively short, the error rate is low. It is difficult to detect the deterioration of the physical link quality. For example, in the case of a bit error rate of 1%, the pass rate of 3 bytes is 78.5%, and the pass rate of 100 bytes is only 3.2%, and the pass rate of 255 bytes is passed. The rate is only 1.25%. This will result in an increase in packet loss on the LAPD link, which will result in an increase in retransmissions and may cause congestion on the link and even affect service performance. Summary of the invention

In view of this, the embodiments of the present invention provide a link processing method, apparatus, and system, which can timely handle a faulty transmission link, avoid link transmission loss, and improve reliability of link transmission data.

The embodiment of the invention provides a method for link processing, including:

The local end acquires performance parameters of the current uplink physical link.

Determining, according to the performance parameter, a link state of a current uplink physical link;

Establishing a link detection frame carrying link state information, and transmitting the link to the peer end through the downlink physical link;

The number of bits occupied by the link state information corresponds to the number of uplink physical links from the peer end to the local end.

Correspondingly, an embodiment of the present invention provides a link processing apparatus, including:

An obtaining module, configured to acquire performance parameters of a current uplink physical link;

a determining module, configured to determine, according to the performance parameter, a link state of a current uplink physical link; a building module, configured to set a link detection frame that carries link state information, where the number of bits occupied by the link state information Corresponds to the number of uplink physical links from the peer to the local end;

And a sending module, configured to send the link detection frame formed by the component module to the peer end by using a downlink physical link.

Correspondingly, the embodiment of the present invention provides a link processing system, including: a base station controller and a base transceiver station, which are mutually opposite ends, and are used to obtain performance parameters of the current uplink physical link; The performance parameter determines the link state of the current uplink physical link; the link detection frame that carries the link state information is configured, and is sent to the peer end through the downlink physical link; where the number of bits occupied by the link state information and the pair The number of uplink physical links from the end to the local end corresponds.

The embodiment of the present invention provides a link processing method, device, and system, which are used to obtain performance parameters of a current uplink physical link, and determine a current uplink physical link chain according to the performance parameter. The link detection frame that carries the link state information is sent to the peer end through the downlink physical link. The number of bits occupied by the link state information is equal to the number of uplink physical links from the peer end to the local end. correspond. The method, the device, and the system for the link processing provided by the embodiment of the present invention add the link state information to the link detection frame, so that the peer end knows the transmission state of the physical link in time, and performs corresponding processing to avoid continuing. The use of the physical link to transmit data causes data packet loss, reduces the bandwidth occupied by retransmission, improves the stability of data transmission, and improves network performance. DRAWINGS

1 is a schematic flowchart of a link processing method according to an embodiment of the present invention;

2 is a schematic diagram of a physical link between a local end and a peer end according to an embodiment of the present invention;

3 is a schematic structural diagram of a link detection frame according to an embodiment of the present invention;

4 is a schematic flowchart of a link detection frame sent by a local end to a peer end according to an embodiment of the present invention; FIG. 5 is a schematic flowchart of a local end transmitting a link detection frame according to an embodiment of the present invention; FIG. 7 is a schematic flowchart of a link detection frame sent by a local end to a peer end according to an embodiment of the present invention; FIG. 7 is a schematic flowchart of a local end transmitting a link detection frame according to another embodiment of the present invention;

FIG. 8 is a schematic diagram of a link processing apparatus according to another embodiment of the present invention; FIG.

FIG. 9 is a schematic diagram of a link processing system according to another embodiment of the present invention. detailed description

The basic idea of the present invention is: the local end acquires the performance parameter of the current uplink physical link; determines the link state of the current uplink physical link according to the performance parameter; constructs a link detection frame carrying the link state information, and passes the downlink The physical link is sent to the peer end. The number of bits occupied by the link state information corresponds to the number of uplink physical links from the peer end to the local end.

The main implementation principles and specific implementations of the technical solutions of the embodiments of the present invention are described below with reference to the accompanying drawings. The manner of application and its corresponding beneficial effects can be elaborated.

In order to solve the problem in the prior art, the embodiment of the present invention provides a link processing method. As shown in FIG. 1, the method includes the following steps:

Step 101: The local end acquires performance parameters of the current uplink physical link.

Step 102: Determine, according to the performance parameter, a link state of the current uplink physical link.

Step 103: Establish a link detection frame carrying the link state information, and send the link to the peer end through the downlink physical link. The number of bits occupied by the link state information corresponds to the number of uplink physical links from the peer end to the local end. .

As shown in Figure 2, the physical link between the local end and the peer end uses multiple physical links to transmit data. Each physical link can be divided into a downlink physical link and a downlink physical link. The local end can only detect the data transmission of the peer end to the local end through the uplink physical link, and cannot know the data transmission sent by the local end to the peer end through the downlink physical link. If any one of the physical links fails, the overall data transmission between the local end and the peer end will be affected. In this regard, the method provided by the embodiment of the present invention adds link state information in a link detection frame transmitted between the local end and the opposite end, and performs physical link detection through the link detection frame, so that both ends can be Get the working status of the link in time.

Specifically, the local end establishes a logical link with the opposite end according to the pre-configured basic physical time slot, where the one logical link corresponds to one or more uplink physical links and the downlink physical link. After the logical link is established, data transmission between the local end and the opposite end is performed. For example, after a logical link is established between the base station controller and the base transceiver station, when the base station controller is the local end, the base transceiver station is the pair. When the base transceiver station is the local end, the base station controller is the opposite end. In order to avoid the use of the faulty link to transmit data, the local end initiates the link detection function to obtain the performance parameters of the current physical layer and the link layer of the local end. The local end periodically starts the link detection function, and can also start the link in real time or periodically. Link detection function. The performance parameters include: physical layer CRC (Cyclic Redundancy Check) error number, number of link layer retransmission frames, and number of frame skipping. After the performance parameter is obtained, the performance parameter is compared with the preset parameter threshold, and the link state of the current uplink physical link is determined according to the comparison result, as follows:

(1) When the link state of the current uplink physical link is determined to be a faulty link, the transmission time slot of the current uplink physical link is closed, and the length of the link detection frame sent to the opposite end is adjusted to be a predetermined test byte number, and is passed. The downlink physical link is sent to the peer. The link detection frame after the length adjustment carries the link state information.

The original length of the link detection frame is too short. When the bit error rate is low, it is difficult to detect that the link condition is worse. Therefore, the predetermined number of test bytes is large, so that the link fault is detected. It is better, such as 200 knots. As shown in FIG. 3, the original length of the link detection frame provided by the embodiment of the present invention is 3 bytes, including: a frame type, a frame length, and link state information. The number of bits occupied by the link state information of the link detection frame corresponds to the number of uplink physical links from the peer end to the local end. For example, there are eight physical links between the local end and the opposite end, and the link state information is occupied. The number of bytes is 1, including 8 bits (bits), each bit identifying the state of a physical link. When the current uplink physical link is a normal link, the bit corresponding to the uplink physical link is filled with 0; when the current uplink physical link is the faulty link, the corresponding bit of the uplink physical link is determined. Fill in 1. Moreover, when the current uplink physical link is a normal link, the link state information may carry N bytes of data information, where N is a positive integer.

When the local end is a base station controller, if the link state of the current uplink physical link is a faulty link, it is also possible to detect whether the service resource pool corresponding to the other uplink physical link has idle resources, and if there are idle resources, The service data being transmitted by the current uplink physical link is switched to the idle uplink physical link.

(2) determining that the link state of the current uplink physical link is a normal link, and the transmission time slot corresponding to the current uplink physical link is not closed, forming a link detection frame carrying the link state information, and adopting downlink physical The link is sent to the peer end;

(3) determining that the link state of the current uplink physical link is a normal link, and the current uplink When the transmission time slot corresponding to the link is closed, the transmission time slot of the current uplink physical link is enabled, and the length of the link detection frame is restored to the original length, such as 3 bytes, and sent to the peer through the downlink physical link. .

Preferably, when the link state of the current uplink physical link is determined to be a normal link, and the transmission time slot corresponding to the current uplink physical link is closed, the link state of the current uplink physical link may be determined to be a normal link. The number of times is weighted. When the weighted value reaches a threshold, the transmission time slot of the current uplink physical link is started, and the original length of the link detection frame is restored, for example, 3 bytes, and sent to the pair through the downlink physical link. If the link state of the current uplink physical link is a faulty link, the weighted value is cleared to zero. For example, after determining that the current uplink physical link is a faulty link, and then determining that the current uplink physical link is a normal link according to the performance parameter, the weighting operation is performed, and the weighting value is increased by 10 each time. After being determined as a normal link multiple times, the weighted value is increased to be greater than or equal to 50. It is determined that the fault of the current uplink physical link has been eliminated and can be used normally. The transmission time slot of the current uplink physical link can be enabled, the length of the link detection frame is restored to 3 bytes, and sent to the opposite end through the downlink physical link. When the current uplink physical link is determined to be a faulty link, the weighted value is cleared to zero.

Correspondingly, the local end receives the link detection frame that carries the link state information sent by the peer end, and determines the current downlink physical physics when the link state of the current downlink physical link is the faulty link according to the link state information. The transmission time slot of the link adjusts the length of the link detection frame sent to the opposite end to a predetermined number of test bytes, such as 200 bytes. When determining that the link state of the current downlink physical link is a normal link, detecting the current downlink physical Whether the transmission time slot of the link is closed, if it is closed, the transmission time slot of the current downlink physical link is turned on, and the original length of the link detection frame is restored, for example, 3 bytes; the link detection frame includes: frame type, frame Length and link status information. The specific structure of the link detection frame is shown in FIG. 3, and details are not described herein again. Before the transmission of the downlink physical link is performed, the method further includes: performing weighting operation on determining the number of times that the link state of the current downlink physical link is a normal link, and when the weighted value reaches a threshold, the current downlink physical link is started. Transmission time slot, The original length of the link detection frame is restored. Before the weight value reaches the threshold, the weight of the current downlink physical link is determined to be the faulty link.

When the local end is a base station controller, determining that the link state of the current downlink physical link is a faulty link, the method further includes: detecting whether the service resource pool corresponding to the other downlink physical link has idle resources, and if there are idle resources, The service data currently being transmitted by the downlink physical link is switched to the idle downlink physical link.

Through the foregoing description, it can be seen that, by using the link processing method provided by the embodiment of the present invention, the link state information is added to the link detection frame, so that the peer end knows the transmission state of the physical link in time, and performs corresponding processing. Avoid the phenomenon of data loss caused by continuing to use the faulty link to transmit data, reduce the bandwidth occupied by retransmission, improve the stability of data transmission, and improve network performance. The base transceiver station, the opposite end is the base station controller. As shown in FIG. 4, when the local end detects that the uplink physical link is faulty and sends a link detection frame to the opposite end, the method includes the following steps:

Step 401: Obtain performance parameters of the current uplink physical link.

Step 402: After obtaining the performance parameter, comparing the performance parameter with the preset parameter threshold, and determining to be a faulty link, performing step 403; and determining to be a normal link, performing step 404.

Step 403: Close the transmission time slot of the current uplink physical link, adjust the length of the link detection frame sent to the opposite end to a predetermined number of test bytes, and send it to the opposite end through the downlink physical link.

Step 404: Detect whether the transmission time slot of the current uplink physical link is closed. If not, go to step 405; if it is closed, go to step 406.

Step 405: Establish a link detection frame carrying link state information, and send the link to the peer end through the downlink physical link.

Step 406: Perform a weighting operation on determining the number of times that the link state of the current uplink physical link is a normal link. Step 407: When the weighted value reaches a threshold, the transmission time slot of the current uplink physical link is started, the length of the link detection frame is restored to 3 bytes, and is sent to the opposite end through the downlink physical link; Before the value, when the link state of the current uplink physical link is determined to be a faulty link, the weighting value is cleared.

When the local end receives the link detection frame sent by the peer end, as shown in Figure 5, the method includes the following steps:

Step 501: Receive a link detection frame that carries the link state information sent by the peer end.

Step 502: When the link state of the current downlink physical link of the local end is determined to be a faulty link, the transmission time slot of the current downlink physical link is closed, and the length of the link detection frame sent to the opposite end is adjusted. The number of test bytes is scheduled.

Step 503: When it is determined that the link state of the current downlink physical link is a normal link, check whether the transmission time slot of the current downlink physical link is closed; if it is closed, go to step 504; if not, go to step 506.

Step 504: Perform a weighting operation on determining the number of times that the link state of the current downlink physical link is a normal link.

Step 505: When the weighted value reaches a threshold, the transmission time slot of the current downlink physical link is started, and the length of the link detection frame is restored to 3 bytes. Before the weighted value reaches the threshold, the link state of the downlink physical link is determined. When the link is faulty, the weighted value is cleared.

Step 506: Continue to transmit data.

Through the foregoing description, it can be seen that, by using the link processing method provided by the embodiment of the present invention, the link state information is added to the link detection frame, so that the peer end knows the transmission state of the physical link in time, and performs corresponding processing. Avoid the phenomenon of data loss caused by continuing to use the faulty link to transmit data, reduce the occupied bandwidth, improve the stability of data transmission, and improve network performance.

Assume that the local end is the base station controller and the opposite end is the base transceiver station, as shown in Figure 6, the local end check The following steps:

Step 601: Obtain performance parameters of the current uplink physical link.

Step 602: After obtaining the performance parameter, comparing the performance parameter with the preset parameter threshold, and determining to be the faulty link, performing step 603; and determining to be the normal link, performing step 605.

Step 603: Close the transmission time slot of the current uplink physical link, adjust the length of the link detection frame sent to the opposite end to a predetermined test byte number, and send it to the opposite end through the downlink physical link.

Step 604: Detect whether the service resource pool corresponding to the other uplink physical link has an idle resource, and if there is an idle resource, switch the service data currently being transmitted by the current uplink physical link to the idle uplink physical link.

The above steps 603 and 604 have no necessary sequence in execution.

Step 605: Detect whether the transmission time slot of the current uplink physical link is closed. If not, go to step 606; if it is closed, go to step 607.

Step 606: Establish a link detection frame carrying link state information, and send the link to the peer end through the downlink physical link.

Step 607: Perform a weighting operation on determining the number of times that the link state of the current uplink physical link is a normal link.

Step 608: When the weighted value reaches a threshold, the transmission time slot of the current uplink physical link is started, the length of the link detection frame is restored to 3 bytes, and is sent to the opposite end through the downlink physical link; Before the value, when the link state of the current uplink physical link is determined to be a faulty link, the weighting value is cleared.

When the local end receives the link detection frame sent by the peer end, as shown in Figure 7, the method includes the following steps:

Step 701: Receive a link detection frame that carries the link state information sent by the peer end.

Step 702: When the link state of the downlink physical link of the local end is determined to be a faulty link according to the link state information, the transmission time slot of the downlink physical link is closed, and the link detection frame sent to the opposite end is adjusted. The length is the predetermined number of test bytes.

Step 703: Detect whether the service resource pool corresponding to the other downlink physical link has an idle resource, and if there is an idle resource, switch the service data that is being transmitted by the current downlink physical link to the idle downlink physical link.

The above steps 702 and 703 have no necessary sequence in execution.

Step 704: When it is determined that the link state of the downlink physical link is a normal link, check whether the transmission time slot of the current downlink physical link is closed; if it is closed, go to step 705; if not, go to step 707.

Step 705: Perform a force right operation for determining the number of times that the link state of the current downlink physical link is a normal link.

Step 706: When the weighted value reaches a threshold, the transmission time slot of the current downlink physical link is started, and the length of the link detection frame is restored to 3 bytes. Before the weighted value reaches the threshold, the link state of the downlink physical link is determined. When the link is faulty, the weighted value is cleared.

Step 707, continue to transmit data.

Through the foregoing description, it can be seen that, by using the link processing method provided by the embodiment of the present invention, the link state information is added to the link detection frame, so that the peer end knows the transmission state of the physical link in time, and performs corresponding processing. Avoid the phenomenon of data loss caused by continuing to use the faulty link to transmit data, reduce the bandwidth occupied by retransmission, improve the stability of data transmission, and improve network performance.

Based on the same inventive concept, an embodiment of the present invention further provides a link processing apparatus. As shown in FIG. 8, the apparatus includes:

The obtaining module 801 is configured to obtain performance parameters of the current uplink physical link.

a determining module 802, configured to determine a link state of a current uplink physical link according to the performance parameter;

a building module 803, configured to build a link detection frame that carries link state information, where The number of bits occupied by the link state information corresponds to the number of uplink physical links from the peer to the local end. The sending module 804 is configured to send the link detection frame formed by the component module to the peer end through the downlink physical link.

Preferably, the obtaining module 801 is specifically configured to start a link detection function, and obtain performance parameters of the current physical layer and the link layer of the local end; wherein, the link detection function is started periodically; the performance parameter includes : Physical layer CRC error number, number of link layer retransmission frames, and number of frame skips.

Preferably, the determining module 802 is specifically configured to compare the performance parameter with a preset parameter threshold, and determine a link state of the current uplink physical link according to the comparison result.

Preferably, the foregoing apparatus further includes: a first processing module 805, configured to: when the link state of the current uplink physical link is a faulty link, close the transmission time slot of the current uplink physical link, and adjust the sending to The length of the link detection frame of the peer is a predetermined number of test bytes, and is sent to the peer end through the downlink physical link. When the link state of the current uplink physical link is determined to be a normal link, the current uplink physical link is detected. Whether the transmission time slot is closed, if not, the link detection frame carrying the link state information is set and sent to the opposite end through the downlink physical link; if it is closed, the transmission of the current uplink physical link is started. The time slot is used to recover the original length of the link detection frame, and is sent to the opposite end by using a downlink physical link. The link detection frame includes: a frame type, a frame length, and link state information.

Preferably, the foregoing apparatus further includes: a second processing module 806, configured to receive a link detection frame that carries the link state information sent by the peer end, and determine, according to the link state information, a current downlink physical link of the local end When the link state is a faulty link, the transmission time slot of the current downlink physical link is closed, and the length of the link detection frame sent to the opposite end is adjusted to be a predetermined test byte number; and the current downlink physical link is determined. When the link state is a normal link, detecting whether the transmission time slot of the current downlink physical link is closed, and if it is closed, turning on the transmission time slot of the current downlink physical link, and recovering the link detection frame. Original length; the link detection frame includes: a frame type, a frame length, and link state information. Preferably, the foregoing apparatus further includes: a weighting module 807, configured to determine, before the first processing module 805 starts the transmission time slot of the current uplink physical link, the number of times that the link state of the current uplink physical link is a normal link. Performing a weighting operation, when the weighting value reaches a threshold value, triggering the first processing module 805; before determining that the link state of the current uplink physical link is a faulty link, the weighting value is determined before the weighting value reaches a threshold value Cleared; or

Before the second processing module 806 starts the transmission time slot of the current downlink physical link, when the weighting value reaches a threshold, the second processing module 806 is triggered; before the weighting value reaches a threshold, the location is determined. When the link state of the current downlink physical link is a faulty link, the weighted value is cleared.

Preferably, the foregoing apparatus further includes: a detecting unit 808, configured to: determine, when the link state of the current uplink physical link is a faulty link, whether the service resource pool corresponding to the other uplink physical link has idle resources, if Have idle resources, and switch service data being transmitted by the current uplink physical link to an idle uplink physical link; or

When the link state of the current downlink physical link is determined to be a faulty link, the method further includes: detecting whether the service resource pool corresponding to the other downlink physical link has idle resources, and if there is idle resource, the current downlink physical link The traffic data being transmitted is switched to the idle downlink physical link.

Based on the same inventive concept, an embodiment of the present invention further provides a link processing system. As shown in FIG. 9, the system includes:

The base station controller 901 and the base transceiver station 902 are mutually opposite ends, and are used to obtain performance parameters of the current uplink physical link. The link state of the current uplink physical link is determined according to the performance parameter. The link detection frame of the path state information is sent to the peer end through the downlink physical link. The number of bits occupied by the link state information corresponds to the number of uplink physical links from the peer end to the local end.

Preferably, the base station controller 901 and the base transceiver station 902 are further configured to receive the opposite end Sending a link detection frame carrying link state information; determining, according to the link state information, when the link state of the current downlink physical link of the local end is a faulty link, when the transmission of the current downlink physical link is closed The gap is adjusted, and the length of the link detection frame sent to the peer end is a predetermined number of test bytes. When the link state of the current downlink physical link is determined to be a normal link, the transmission time slot of the current downlink physical link is detected. Whether it is off, if it is off, the transmission time slot of the current downlink physical link is turned on, and the original length of the link detection frame is restored; the link detection frame includes: a frame type, a frame length, and link state information. .

Through the above description, it can be seen that the method, the device and the system for the link processing provided by the embodiment of the present invention enable the peer to know the transmission status of the physical link in time by adding the link state information in the link detection frame. And the corresponding processing, to avoid the phenomenon of data loss caused by continuing to use the faulty link to transmit data, reduce the bandwidth occupied by retransmission, improve the stability of data transmission, and thereby improve network performance.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can be embodied in the form of one or more computer program products embodied on a computer-usable storage medium (including but not limited to disk storage, CD-ROM, optical storage, etc.) in which computer usable program code is embodied.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Implementing one or more blocks in a process or multiple processes and/or block diagrams in the flowchart The device for the function specified in the box.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

While the preferred embodiment of the invention has been described, the subject matter Therefore, it is intended that the appended claims be interpreted as including The spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and modifications of the invention

Claims

Claim

A link processing method, characterized in that the method comprises:

The method according to claim 1, wherein before the local end acquires the performance parameter of the current uplink physical link, the method further includes: the local end establishes logic according to the pre-configured basic physical time slot and the opposite end. A link, one of the logical links corresponding to one or more of the uplink physical link and the downlink physical link.

The method according to claim 1, wherein the performance parameter of the current uplink physical link is obtained by the local end:

The link detection function is started, and the performance parameters of the current physical layer and the link layer of the local end are obtained. The local end periodically starts the link detection function. The performance parameters include: physical layer cyclic redundancy check code CRC error Number, number of link layer retransmission frames, and number of frame skips.

The method according to claim 3, wherein the determining, according to the performance parameter, a link state of a current uplink physical link is:

The performance parameter is compared with the preset parameter threshold, and the link state of the current uplink physical link is determined according to the comparison result.

5. The method of claim 4, wherein the method further comprises:

When the link state of the current uplink physical link is determined to be a faulty link, the transmission time slot of the current uplink physical link is closed, and the length of the link detection frame sent to the opposite end is adjusted to a predetermined test byte number, and the downlink number is passed. The physical link is sent to the peer.

The method according to claim 4 or 5, wherein the method further comprises: determining a transmission time slot of the current uplink physical link when the link state of the current uplink physical link is a normal link If it is not closed, the link detection frame carrying the link state information is set up and sent to the opposite end through the downlink physical link; if it is closed, the transmission time slot of the current uplink physical link is started, and the transmission is resumed. The link detects the original length of the frame and sends the data to the peer through the downlink physical link. The link detection frame includes: a frame type, a frame length, and link state information.

The method of claim 6, wherein the method further comprises: when the weighting value reaches a threshold, the current uplink is started, before the transmitting the time slot of the current uplink physical link The transmission time slot of the physical link recovers the original length of the link detection frame, and sends the link to the opposite end through the downlink physical link. Before the weighted value reaches the threshold, the link of the current uplink physical link is determined. When the status is a faulty link, the weighted value is cleared.

8. The method according to claim 1, wherein the method further comprises:

The local end receives the link detection frame that carries the link state information sent by the peer end.

Determining, according to the link state information, that the link state of the current downlink physical link of the local end is a faulty link, turning off the transmission time slot of the current downlink physical link, and adjusting the length of the link detection frame sent to the opposite end. The number of test bytes for scheduling;

When it is determined that the link state of the current downlink physical link is a normal link, detecting whether the transmission time slot of the current downlink physical link is closed, and if it is closed, turning on the transmission time slot of the current downlink physical link And recovering an original length of the link detection frame; the link detection frame includes: a frame type, a frame length, and link state information.

The method of claim 8, wherein before the opening a transmission time slot of the current downlink physical link, the method further comprises: determining the current downlink physical link The link state is a weighted operation for the number of times of the normal link. When the weighted value reaches the threshold, the transmission time slot of the current downlink physical link is started, and the original length of the link detection frame is restored; the weighted value reaches a threshold. Before determining that the link state of the current downlink physical link is a faulty link, the weighting value is cleared.

10. The method of claim 5 or 8, wherein

When the local end is a base station controller, and the link state of the current uplink physical link is determined to be a faulty link, the method further includes: detecting whether the service resource pool corresponding to the other uplink physical link has idle resources, if there is idle The resource, the service data that is being transmitted by the current uplink physical link is switched to an idle uplink physical link;

When the local end is a base station controller, and the link state of the current downlink physical link is determined to be a faulty link, the method further includes: detecting whether the service resource pool corresponding to the other downlink physical link has idle resources, if there is idle The resource, the service data that is being transmitted by the current downlink physical link is switched to the idle downlink physical link.

11. A link processing device, the device comprising:

The device of claim 11, wherein the obtaining module obtains the performance parameter of the current uplink physical link as: starting a link detection function, and acquiring performance parameters of the current physical layer and the link layer of the local end; The link detection function is periodically started. The performance parameters include: a physical layer cyclic redundancy check code CRC error number, a link layer retransmission frame number, and a number of skip frames.

13. The apparatus according to claim 11, wherein the determining module is according to the The performance parameter determines the link state of the current uplink physical link as follows: The performance parameter is compared with the preset parameter threshold, and the link state of the current uplink physical link is determined according to the comparison result.

The device of claim 11, further comprising: a first processing module, configured to: when the link state of the current uplink physical link is a faulty link, close the current uplink physical chain The transmission time slot of the path, the length of the link detection frame sent to the opposite end is adjusted to be a predetermined number of test bytes, and is sent to the opposite end through the downlink physical link; when the link state of the current uplink physical link is determined to be a normal link Detecting whether the transmission time slot of the current uplink physical link is closed, and if not, setting up a link detection frame carrying the link state information, and sending the link detection frame to the opposite end through the downlink physical link; The transmission time slot of the current uplink physical link recovers the original length of the link detection frame, and is sent to the opposite end by using a downlink physical link. The link detection frame includes: a frame type, a frame length, and a link. status information.

The device according to claim 11, wherein the device further comprises: a second processing module, configured to receive a link detection frame that carries link state information sent by the opposite end; When the link state of the current downlink physical link of the local end is a faulty link, the transmission time slot of the current downlink physical link is closed, and the length of the link detection frame sent to the opposite end is adjusted to be a predetermined test byte number; When it is determined that the link state of the current downlink physical link is a normal link, detecting whether the transmission time slot of the current downlink physical link is closed, and if it is closed, turning on the transmission time slot of the current downlink physical link And recovering an original length of the link detection frame; the link detection frame includes: a frame type, a frame length, and link state information.

The device according to claim 14 or 15, wherein the device further comprises: a weighting module, configured to: before the first processing module starts the transmission time slot of the current uplink physical link, when the weight reaches a threshold value, Trimming the first processing module; before determining that the current uplink link state is a faulty link, the weighting value is cleared; or

Before the second processing module starts the transmission time slot of the current downlink physical link, When the weight reaches a threshold, the second processing module is triggered. When the weight of the current downlink physical link is determined to be a faulty link, the weighting value is cleared.

The device according to claim 11, wherein the device further comprises: a detecting unit, configured to detect a service corresponding to another uplink physical link when the link state of the current uplink physical link is a faulty link Whether the resource pool has idle resources, and if there are idle resources, the service data that is being transmitted by the current uplink physical link is switched to the idle uplink physical link; or

When the link status of the current downlink physical link is a faulty link, the device further includes: detecting whether the service resource pool corresponding to the other downlink physical link has idle resources, and if there is idle resources, the current downlink physical The service data being transmitted by the link is switched to the idle downlink physical link.

A link processing system, the system comprising: a base station controller and a base transceiver station, wherein the two are mutually opposite ends, and are used to obtain performance parameters of the current uplink physical link; The parameter determines the link state of the current uplink physical link. The link detection frame that carries the link state information is sent to the peer end through the downlink physical link. The number of bits occupied by the link state information and the peer end The number of uplink physical links to the local end corresponds.

The system according to claim 18, wherein the base station controller and the base transceiver station are further configured to receive a link detection frame that carries the link state information sent by the opposite end; Status information, when the link state of the current downlink physical link of the local end is determined to be a faulty link, the transmission time slot of the current downlink physical link is closed, and the length of the link detection frame sent to the opposite end is adjusted to a predetermined test byte. If the link state of the current downlink physical link is a normal link, it is detected whether the transmission time slot of the current downlink physical link is closed, and if it is closed, the transmission of the current downlink physical link is started. a time slot, recovering an original length of the link detection frame; the link detection frame includes: a frame type, a frame length, and link state information.