CN102065520B - Base station searching method and terminal - Google Patents
Base station searching method and terminal Download PDFInfo
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- CN102065520B CN102065520B CN200910222549.4A CN200910222549A CN102065520B CN 102065520 B CN102065520 B CN 102065520B CN 200910222549 A CN200910222549 A CN 200910222549A CN 102065520 B CN102065520 B CN 102065520B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/005—Discovery of network devices, e.g. terminals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
Abstract
The invention provides a base station searching method and a terminal. The terminal removes a base station which is not met with preset base station selection conditions according to the acquired information of the base station, and other base stations are continuously scanned until the terminal is accessed to the base station meeting the base station selection conditions. The method provided by the invention comprises the steps of removing special sub base stations which can not be accessed by the terminal step by step according to the sequence of acquisition time of information of a base station, namely if the early acquired information of the base station is not met with the base station selection conditions, the base station is directly determined to be an improper base station and is removed, a process for scanning other base stations is initiated again, and the lately acquired information of the base station is not judged any more. In the base station searching method provided by the invention, the terminal requires no searching according to the complete base station information of each base station, and the base stations which can not be accessed by the terminal are removed in advance, thus realizing rapid and accurate access of the base station, greatly improving scanning, accessing and switching performances of a wireless communication system and reducing communication and terminal costs.
Description
Technical field
The present invention relates to the terminal access technology in wireless communication system, espespecially a kind of base station search method and terminal.
Background technology
In wireless communication system, base station is to show the equipment that terminal provides service, between base station and terminal, by electromagnetic wave, carries out radio communication.By base station, wireless communication system can provide wireless coverage for the terminal of managing definitely scope, and this geographic range is called community.
Usually, wireless communication system is in order, on a large scale for the user provides radio communication, to need to dispose the large base station of coverage.This base station is commonly referred to macro base station (Macro BS), and the community of its covering is commonly referred to Hong Qu (Macro Cell).Simultaneously, wireless communication system is considered user's different demands and different environment for use, need to be for the user provides higher-quality radio communication service under some environment or scene, and the base station that some coverages are little, transmitting power is lower thereby be used.These small base stations comprise little base station (MicroBS), micro-base station (Pico BS) and sub-base stations (Femto BS) (also can be called Home eNodeB or personal base station).
A macro base station maximum can cover the zone of circumference 2-3 kilometer, and the coverage of sub-base stations is no more than 30 meters.Due to the huge difference of their coverages, may be deployed with the sub-base stations of a large amount of (hundreds of is even thousands of) to improve indoor telecommunication service quality in the coverage of macro base station, the maximum number of user that sub-base stations can access simultaneously is generally 6 to 8.Sub-base stations is divided into open and proprietary two kinds usually, and wherein proprietary sub-base stations comprises again the proprietary sub-base stations of part and whole proprietary sub-base stations.Wherein, be no more than under the prerequisite of maximum number of user, open sub-base stations can be to any user's access; All proprietary sub-base stations is only open to proprietary user; And the proprietary sub-base stations of part can allow other non-proprietary users of access under the prerequisite that can guarantee proprietary QoS of customer.As shown in Figure 1, the structural representation that forms that Fig. 1 is the existing wireless communication system that contains sub-base stations consisted of macro base station.
In a wireless communication system consisted of macro base station, terminal is at access network or while reentering network, and terminal can be scanned the near zone base station, to find suitable base station access.And while in the coverage of macro base station, being deployed with a large amount of sub-base stations, following three characteristics that exist due to sub-base stations: 1) the sub-base stations coverage is very little; 2) sub-base stations is very intensive; 3) proprietary sub-base stations may be that terminal can't access.Make terminal access procedure originally start to become complicated, therefore, this terminal under environment is surveyed or during the scanning base station, should be control overhead as far as possible, reduces as far as possible useless scanning to reduce whole handover overhead.
In current system, terminal is when search base station, need at first resolve secondary synchronization sequences judgement cell type, for proprietary sub-base stations, terminal then also needs to resolve the base station identifier (BS-ID) in auxiliary superframe head and checks in the white table of terminal self whether comprise this BS-ID, to determine whether can access this sub-base stations.The problem of this method is, for proprietary sub-base stations, could determine whether terminal can access after must having resolved complete auxiliary superframe head.Like this, in the situation that proprietary sub-base stations is intensive, the scan method of existing terminal searching base station probably needs to repeat many times, to have reduced scan efficiency, has increased whole handover overhead, thereby has increased the access expense of overall network.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of base station search method, can realize errorless fast base station access, greatly improves wireless communication system scanning, access and performance of handoffs, reduces the access expense of whole network.
Another object of the present invention is to provide a kind of terminal, can realize errorless fast base station access, greatly improve wireless communication system scanning, access and performance of handoffs, reduce the access expense of whole network.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of base station search method, set in advance base station selected condition, also comprises:
Terminal, according to the base station information obtained, screens out the base station that does not meet the base station selected condition set in advance, and continues other base station of scanning, until start the base station that access meets base station selected condition.
Described base station information comprises cell identifier and/or base station identifier, and/or the base station status indication information.
Described terminal is according to the base station information obtained, by the base station that does not meet the base station selected condition set in advance screen out into:
Described terminal is after down-going synchronous, according to the cell identifier carried in the secondary synchronization sequences obtained, the base station type comprised in cell identifier shows that current base station is proprietary sub-base stations, described terminal searches in the white table of self preserving whether corresponding cell identifier is arranged, if do not have, terminal is classified this base station as inappropriate base station and is screened out, and continues other base station of scanning.
If in described white table, corresponding cell identifier is arranged, the method also comprises:
The base station status indication information that the first attached bag of the auxiliary superframe head that described terminal acquisition base station sends is carried also judges whether community forbids access, if the base station status indication information shows community and forbids access, terminal is classified this base station as inappropriate base station and is screened out, and ends this Cell searching and again initiates the process of other base station of scanning.
After the base station status indication information that the first attached bag of the auxiliary superframe head sent in described terminal acquisition base station is carried, if described base station status indication information shows community, allow access, the method also comprises:
Described terminal is understood low 12 information of the base station identifier in the first attached bag of auxiliary superframe head, judge in its white table that whether is included in terminal, if not, terminal is classified this base station as inappropriate base station and is screened out, and ends this Cell searching and again initiates the process of other base station of scanning.
If low 12 information of base station identifier are included in the white table of terminal, the method also comprises:
Described terminal is obtained high 36 information of the base station identifier carried in the second attached bag of auxiliary superframe head, according to complete base station identifier, judge whether current sub-base stations is the accessible proprietary sub-base stations of terminal, if not, terminal is classified this base station as inappropriate base station and is screened out, and ends this Cell searching and again initiates the process of other base station of scanning; If so, terminal selects this base station to be accessed.
Before the method, also comprise: described terminal is upgraded the white table that self preserves, and is specially:
At the self-organizing network server, be proprietary sub-base stations while distributing new cell identifier, the self-organizing network server is handed down to affected terminal by the method for eating dishes without rice or wine by new cell identifier, and described terminal is upgraded the white table information that self preserves.
When described base station type shows that current base station is for open sub-base stations or macro base station, and the base station status indication information shows that when community allows access, described terminal directly starts access procedure.
A kind of terminal, mainly comprise module, judge module and access module be set, and wherein, set in advance base station selected condition in module is set;
Judge module, for receiving base station information, according to the base station information received and the base station selected condition set in advance in module is set, screen out the base station that does not meet the base station selected condition set in advance, and continues other base station of scanning; When meeting the base station selected condition set in advance, to access module, send the access notice;
Access module, for receiving the access notice from judge module, and start the terminal access procedure.
The base station of described terminal access comprises macro base station, ,Wei base station, little base station, sub-base stations;
Described sub-base stations comprises open sub-base stations, proprietary sub-base stations, and wherein proprietary sub-base stations comprises the proprietary sub-base stations of part, whole proprietary sub-base stations.
The technical scheme provided from the invention described above can find out, terminal, according to the base station information obtained, screens out the base station that does not meet the base station selected condition set in advance, and continues other base station of scanning, until access meets the base station of base station selected condition.The inventive method is according to the priority of base station information acquisition time, get rid of step by step the proprietary sub-base stations that terminal can't access, that is to say, if the base station information early obtained does not meet base station selected condition, directly classifying this base station as inappropriate base station screens out, and again initiate the process of other base station of scanning, no longer the base station information of more late acquisition judged.The method of search base station of the present invention, do not need terminal to be searched for according to the complete base station information of each base station, got rid of in advance the base station that terminal can't access, realized the access of quick errorless base station, greatly improve wireless communication system scanning, access and performance of handoffs, reduced communication and terminal overheads.
The accompanying drawing explanation
The structural representation that forms that Fig. 1 is the existing wireless communication system that contains sub-base stations consisted of macro base station;
The flow chart that Fig. 2 is base station search method of the present invention;
Fig. 3 is that in Fig. 2 of the present invention, terminal, according to the base station information obtained, is searched for the realization flow schematic diagram of the embodiment of the base station that meets base station selected condition;
The composition structural representation that Fig. 4 is terminal of the present invention;
Fig. 5 is that the present invention utilizes base station information to carry out the schematic flow sheet of the first embodiment of base station search;
Fig. 6 is that the present invention utilizes base station information to carry out the schematic flow sheet of the second embodiment of base station search;
Fig. 7 is that the present invention utilizes base station information to carry out the schematic flow sheet of the 3rd embodiment of base station search;
Fig. 8 is that the present invention utilizes base station information to carry out the schematic flow sheet of the 4th embodiment of base station search;
Fig. 9 is that the present invention utilizes base station information to carry out the schematic flow sheet of the 5th embodiment of base station search;
Figure 10 is that the present invention utilizes base station information to carry out the schematic flow sheet of the 6th embodiment of base station search;
Figure 11 is the schematic flow sheet that terminal of the present invention is upgraded the embodiment of the white table of self preserving.
Embodiment
The flow chart that Fig. 2 is base station search method of the present invention as shown in Figure 2, comprising:
Step 200: set in advance base station selected condition.
In this step, base station selected condition is a lot, according to the configuration of system, arranges, only give some instances here, and the protection range be not intended to limit the present invention.Such as:
Forbid the base station of access for community, terminal is classified this base station as inappropriate base station, ends this Cell searching and again initiates scanning process; Perhaps,
Allow the base station of access for community, and end-probing is the sub-base stations of macro base station or opening networking type to this base station, terminal directly starts access procedure; Perhaps,
Allow the base station of access for community, if end-probing is proprietary sub-base stations to this base station, terminal also needs to judge according to the base station information of the white table of self maintained and acquisition whether this base station is likely its accessible proprietary sub-base stations etc.
Step 201: terminal, according to the base station information obtained, screens out the base station that does not meet the base station selected condition set in advance, and continues other base station of scanning, until start the base station that access meets base station selected condition.
Base station information includes but not limited to cell identifier (Cell-ID) and/or base station identifier (BS-ID), and/or the base station status indication information etc.
This step is according to the base station information obtained, and judges whether respective base station meets the base station selected condition set in advance, and specific implementation comprises:
Terminal, when down-going synchronous, is obtained main synchronizing sequence and secondary synchronization sequences.The type and/or the networking type information that include base station in the Cell-ID that secondary synchronization sequences carries, terminal can, according to this information, be done base station screening for the first time according to the base station selected condition set in advance:
When base station type shows current base station, be proprietary sub-base stations, terminal searches in the white table of self preserving whether corresponding Cell-ID is arranged, if do not have, terminal is classified this base station as inappropriate base station and screened out, and continues other base station of scanning; If in white table, corresponding Cell-ID is arranged, enter base station screening for the second time:
Terminal then obtains the main superframe head of base station transmission and the first attached bag or second attached bag of auxiliary superframe head; If what at first obtain is the first attached bag of auxiliary superframe head, the base station status indication information that terminal is carried according to the first attached bag of auxiliary superframe head judges whether community forbids access, if the base station status indication information shows community and forbids access, terminal is classified this base station as inappropriate base station and is screened out, and ends this Cell searching and again initiates the process of other base station of scanning;
If the base station status indication information shows community and allows access, enter base station screening for the third time:
Low 12 information of BS-ID in the first attached bag of the auxiliary superframe head that terminal is read according to white table and the solution of self maintained, judge in its white table that whether is included in terminal, if not, terminal is classified this base station as inappropriate base station and is screened out, and ends this Cell searching and again initiates the process of other base station of scanning; If so, terminal enters the 4th base station screening:
Terminal is further obtained high 36 information of the BS-ID carried in the second attached bag of auxiliary superframe head, according to complete BS-ID (48 bit information), judge whether current sub-base stations is the accessible proprietary sub-base stations of terminal, if not, terminal is classified this base station as inappropriate base station and is screened out, and ends this Cell searching and again initiates the process of other base station of scanning; If so, terminal selects this base station to be accessed.
It should be noted that, from the acquisition time of base station information afterwards first, cell type and Cell-ID information got the earliest, and low 12 information of base station status indication information and BS-ID are indefinite with the acquisition time priority of high 36 information of BS-ID.Usually, second attached bag of auxiliary superframe head sends the large of first attached bag of period ratio, so generally can first obtain low 12 information from base station status indication information and the BS-ID of first attached bag of auxiliary superframe head, and then obtain high 36 information of BS-ID of the second attached bag of auxiliary superframe head.In the present invention, the order of obtaining of first attached bag and second attached bag is not done to restriction.
The method of step 201 of the present invention also comprises: when base station type shows that current base station is for open sub-base stations or macro base station, and the base station status indication information shows that community allows access, directly starts access procedure.
From the realization of step 201, can find out, the inventive method is according to the priority of base station information acquisition time, get rid of step by step the proprietary sub-base stations that terminal can't access, that is to say, if the base station information early obtained does not meet base station selected condition, directly classify this base station as inappropriate base station and screen out, and again initiate the process of other base station of scanning, no longer the base station information of more late acquisition judged.The method of search base station of the present invention, do not need terminal to be searched for according to the complete base station information of each base station, got rid of in advance the base station that terminal can't access, realized the access of quick errorless base station, greatly improve wireless communication system scanning, access and performance of handoffs, reduced communication and terminal overheads.
Before the inventive method, also comprise:
Terminal may, through online or offline authorization authentication in advance, be configured to addressable some proprietary sub-base stations; Addressable proprietary sub-base stations of terminal maintenance is shown in vain, the Cell-ID information of the BS-ID that described white table comprises proprietary sub-base stations and/or described base station affiliated subdistrict;
While carrying out network insertion or network reentry in the terminal searching base station, at first terminal carries out frequency sweep to the frequency range of all supports, selects the strongest frequency, then starts the down-going synchronous process that step 200 of the present invention～step 201 relates to.
Fig. 3 is that in Fig. 2 of the present invention, terminal, according to the base station information obtained, accesses the realization flow schematic diagram of the embodiment of the base station that meets base station selected condition, as shown in Figure 3, comprising:
Step 300～step 301: the scan-synchronized sequence, terminal and target BS complete physical layer synchronization.
Step 302: judge that terminal is tended to the base station type selected whether consistent with the current base station type scanned, if unanimously, enter step 303; Otherwise return to step 300～step 301.
A priority list for the base station type of display terminal access can be pre-stored in terminal be arranged, and the base station that priority is higher, show that terminal more tends to access.The cell identifier scope has shown the type of the current base station scanned.
Step 303: first attached bag of obtaining main superframe head and auxiliary superframe head.
Step 304: judge that whether prohibition information position, first attached bag Zhong community is 0, if enter step 305, otherwise returns to step 300～step 301.Here, suppose that prohibition information position, community is that 0 expression is not forbidden, prohibition information position, community is that 1 expression is forbidden.
Step 305: obtain auxiliary other attached bag of superframe head and be further analyzed.Comprise for the third time with four base station screening, repeat no more here.
Step 306: with target BS, complete and synchronize.
For the inventive method, also provide a kind of terminal, the composition structural representation that Fig. 4 is terminal of the present invention, as shown in Figure 4, terminal of the present invention mainly comprises module, judge module and access module is set, and wherein, has set in advance base station selected condition in module is set;
Judge module, for receiving base station information, according to the base station information received and the base station selected condition set in advance in module is set, screen out the base station that does not meet the base station selected condition set in advance, and continues other base station of scanning; When meeting the base station selected condition set in advance, to access module, send the access notice.
Access module, for receiving the access notice from judge module, and start the terminal access procedure.
Described base station comprises macro base station, ,Wei base station, little base station, sub-base stations; Described sub-base stations comprises open sub-base stations, proprietary sub-base stations, and wherein proprietary sub-base stations comprises the proprietary sub-base stations of part, whole proprietary sub-base stations.
Below in conjunction with embodiment, the WiMAX communication network of take is described in detail the inventive method as example.
Fig. 5 is that the present invention utilizes base station information to carry out the schematic flow sheet of the first embodiment of base station search, in the first embodiment, terminal is in the base station scans process, suppose to find that according to secondary synchronization sequences the type of current base station is proprietary sub-base stations, at this moment, terminal can search in white table whether have the corresponding Cell-ID obtained from secondary synchronization sequences, if there is this Cell-ID, continue to affect according to other base station information of terminal access and search for judgement, otherwise terminal is classified this base station as inappropriate base station and screened out, and continue other base station of scanning.As shown in Figure 5, comprising:
Step 500: terminal detects synchronizing sequence and obtains Cell-ID information.
Step 501: in the white table of terminal inspection, whether corresponding Cell-ID is arranged, if can find, enter step 502; Otherwise terminal is classified this base station as inappropriate base station and screened out, and continue other base stations of scanning.
Step 502: terminal detects other base station information that affects the terminal access.
Fig. 6 is that the present invention utilizes base station information to carry out the schematic flow sheet of the second embodiment of base station search, in the second embodiment, terminal is in the base station scans process, suppose to obtain the base station status indication information, judge according to the base station status indication information whether community is set to forbid, if so, show that now base station does not wish the terminal access, terminal is classified this base station as inappropriate base station and is screened out, and continues other base station of scanning; Otherwise terminal continues to detect the base station information that other affects the terminal access.As shown in Figure 6, comprising:
Step 600: terminal detects first attached bag of auxiliary superframe head and obtains the base station status indication information.
Step 601: prohibition information position, terminal judges community, whether for forbidding, forbids that prohibition information position, Ji Gai community is 1 if, and terminal is classified this base station as inappropriate base station and screened out, and continues other base station of scanning; Otherwise enter step 602.
Step 602: terminal detects other base station information that affects the terminal access.
Fig. 7 is that the present invention utilizes base station information to carry out the schematic flow sheet of the 3rd embodiment of base station search, in the 3rd embodiment, terminal is in the base station scans process, suppose to find that according to secondary synchronization sequences the type of current base station is proprietary sub-base stations, then terminal starts to detect the BS-ID in main superframe head and auxiliary superframe head.If at first detected, be first attached bag of auxiliary superframe head, terminal can be obtained low 12 information of BS-ID.Terminal is searched white table and is judged whether to contain low 12 information of same BS-ID, if there is such BS-ID, terminal continues to detect the information that other affects the terminal access; Otherwise terminal is classified this base station as inappropriate base station and screened out, continue other base station of scanning.As shown in Figure 7, comprising:
Step 700: terminal detects first attached bag of auxiliary superframe head and obtains low 12 information of BS-ID.
Step 701: whether exist this BS-ID hang down 12 information in the white table of terminal inspection, if exist, enter step 702: otherwise terminal classifies this base station as inappropriate base station two and screens out, and continues to scan other base station.
Step 702: terminal detects other base station information that affects the terminal access.
Fig. 8 is that the present invention utilizes base station information to carry out the schematic flow sheet of the 4th embodiment of base station search, in the 4th embodiment, terminal is in the base station scans process, suppose to find that according to secondary synchronization sequences the type of current base station is proprietary sub-base stations, then terminal starts to detect the BS-ID in main superframe head and auxiliary superframe head.Supposing at first detected is second attached bag of auxiliary superframe head, and terminal can be obtained high 36 information of BS-ID.Terminal is searched in white table high 36 information that whether have the BS-ID same with the BS-ID obtained, if exist, terminal continues to detect the information that other affects the terminal access, otherwise terminal is classified this base station as inappropriate base station and screened out, other base station of continuation scanning.Shown in Fig. 8, comprising:
Step 800: terminal detects high 36 information of BS-ID in second attached bag of auxiliary superframe head.
Step 801: whether terminal is searched in white table high 36 information of identical BS-ID, if can find, enters step 802, otherwise terminal is classified this base station as inappropriate base station two and screened out, and continues other base station of scanning.
Step 802: terminal detects other base station information that affects the terminal access.
Fig. 9 is that the present invention utilizes base station information to carry out the schematic flow sheet of the 5th embodiment of base station search, in the 5th embodiment, terminal is in the base station scans process, suppose low 12 information that base station type is BS-ID in proprietary sub-base stations and first attached bag that first detects auxiliary superframe head, then obtain again high 36 information of BS-ID in second attached bag, that is to say, terminal obtained 48 complete BS-ID.48 BS-ID of (identical with 48 the complete BS-ID that obtain) are checked in white table and whether had coupling to terminal, if exist, terminal enters access procedure; Otherwise terminal is classified this base station as inappropriate base station and screened out, continue other base station of scanning.Adopt complete BS-ID to make a decision as preferred embodiment, the proprietary sub-base stations that can find accurately terminal really to can be accessed by.As shown in Figure 9, comprising:
Step 900: terminal, by detecting first attached bag and second attached bag of auxiliary superframe head, is obtained 48 complete BS-ID information.
Step 901: terminal is searched in white table 48 the complete BS-ID information whether coupling is arranged, if can find, enters step 902; Otherwise terminal is classified this base station as inappropriate base station and screened out, continue other base station of scanning.
Step 902: terminal enters access state, the access current base station.
Figure 10 is that the present invention utilizes base station information to carry out the schematic flow sheet of the 6th embodiment of base station search, as shown in figure 10, comprising:
Step 1000: while carrying out network insertion or network reentry in the terminal searching base station, at first terminal carries out frequency sweep to the frequency range of all supports, selects the strongest frequency, carries out the scanner uni down-going synchronous.
Step 1001～step 1002: detect the Cell-ID in secondary synchronization sequences, and judge the type of the base station of current scanning.
In this step, if judge the current base station type scanned, be macro base station, enter step 1003; If judge the current base station type scanned for open sub-base stations, enter step 1004; Judging the current base station type scanned is proprietary sub-base stations, enters step 1005.
Step 1003: judge whether terminal tends to select proprietary sub-base stations, if so, return to step 1000 and continue scanning; Otherwise, enter step 1006.
Step 1004: judge whether terminal tends to select proprietary sub-base stations, if so, return to step 1000 and continue scanning; Otherwise, enter step 1006.
Step 1005: judge in the whether addressable proprietary sub-base stations of terminal and white table and can find corresponding Cell-ID, if so, enter step 1006, otherwise return to step 1000, continue scanning.
Step 1006: check main superframe head.
Step 1007～step 1008: detect prohibition information position, auxiliary superframe head first attached bag Zhong community, in the present embodiment, if prohibition information position, community is 1, show to forbid, return to step 1000; If prohibition information position, community is 0, show to allow, enter step 1009.
Step 1009: if the base station of current scanning is macro base station or open sub-base stations, enter step 1010; If the base station of current scanning is special-purpose sub-base stations, enter step 1011.
Step 1010: select this base station to be accessed.Process ends.If the improper needs in follow-up discovery base station return to step 1000 while carrying out base station scans.
Step 1011: detect auxiliary first attached bag of superframe head, parse low 12 of BS-ID.
Step 1012: judge in the white table of terminal low 12 that whether can find corresponding BS-ID, if can not find, return to step 1000 and continue scanning; If can find, enter step 1013.
Step 1013～step 1014: detect second attached bag of auxiliary superframe head, parse the high 36 of BS-ID.Judge 48 BS-ID that whether can find coupling in the white table of terminal, if can find, enter step 1015; Otherwise return to step 1000 and continue scanning.Step 1015: select current base station to be accessed.If this base station is improper in follow-up access procedure, can returns to step 1000 and continue scanning.
Figure 11 is the schematic flow sheet that terminal of the present invention is upgraded the embodiment of the white table of self preserving, and as shown in Figure 9, comprising:
Step 1100: terminal request adds or exits proprietary sub-base stations.
But the terminal active request adds or exits proprietary sub-base stations.
Step 1101: proprietary sub-base stations sends request processes decision message to terminal.
After the vesting assent of proprietary sub-base stations, proprietary sub-base stations can be informed terminal by the mode of message, and it processes decision.
Step 1102: terminal reception & disposal decision message is also upgraded self white table.
Determine according to processing, if proprietary sub-base stations agrees that terminal adds, in the white table that terminal is preserved at self, increase a new record, the BS-ID that comprises this proprietary sub-base stations and optional Cell-ID information; Accordingly, if agreeing terminal, proprietary sub-base stations exits the service of no longer accepting, the information relevant to this proprietary sub-base stations in the white table of terminal deletion.
Must comprise BS-ID information in the white table of terminal, Cell-ID belongs to option, and in order to accelerate the speed of base station search, containing Cell-ID information in white table is preferred embodiment.
In addition, the Cell-ID information of proprietary sub-base stations can be obtained by self-organizing network (SON) server by terminal.Adjacent sub-base stations community generally all can distribute different Cell-ID to avoid a conflict.Because the Topological General variation of sub-base stations community is little, the SON server can keep the Cell-ID of proprietary sub-base stations constant the long period.If the SON server need to distribute a new Cell-ID to proprietary sub-base stations, can inform that affected terminal makes it upgrade corresponding white table information by (OTA) method of eating dishes without rice or wine.
In addition, proprietary sub-base stations also can add terminal or delete by active arrangement the service groups of self, and informs terminal, and terminal is upgraded the white table information that self preserves accordingly.If proprietary sub-base stations is taken in the situation of another place use by the user, may be assigned with new Cell-ID, for this situation about reconfiguring, only need the SON server, by the OTA method, new Cell-ID is handed down to affected terminal, make its corresponding table in vain that upgrades.
The above, be only preferred embodiment of the present invention, is not intended to limit protection scope of the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., within all should being included in protection scope of the present invention.
Claims (8)
1. a base station search method, is characterized in that, sets in advance base station selected condition, also comprises:
Terminal, according to the base station information obtained, screens out the base station that does not meet the base station selected condition set in advance, and continues other base station of scanning, until start the base station that access meets base station selected condition;
Wherein, described base station information comprises cell identifier and/or base station identifier, and/or the base station status indication information; Described terminal is according to the base station information obtained, by the base station that does not meet the base station selected condition set in advance screen out into:
Described terminal is after down-going synchronous, according to the cell identifier carried in the secondary synchronization sequences obtained, the base station type comprised in cell identifier shows that current base station is proprietary sub-base stations, described terminal searches in the white table of self preserving whether corresponding cell identifier is arranged, if do not have, terminal is classified this base station as inappropriate base station and is screened out, and continues other base station of scanning.
2. base station search method according to claim 1, is characterized in that, if in described white table, corresponding cell identifier is arranged, the method also comprises:
The base station status indication information that the first attached bag of the auxiliary superframe head that described terminal acquisition base station sends is carried also judges whether community forbids access, if the base station status indication information shows community and forbids access, terminal is classified this base station as inappropriate base station and is screened out, and ends this Cell searching and again initiates the process of other base station of scanning.
3. base station search method according to claim 2, it is characterized in that, after the base station status indication information that the first attached bag of the auxiliary superframe head sent in described terminal acquisition base station is carried, if described base station status indication information shows community, allow access, the method also comprises:
Described terminal is understood low 12 information of the base station identifier in the first attached bag of auxiliary superframe head, judge in its white table that whether is included in terminal, if not, terminal is classified this base station as inappropriate base station and is screened out, and ends this Cell searching and again initiates the process of other base station of scanning.
4. base station search method according to claim 3, is characterized in that, if low 12 information of base station identifier are included in the white table of terminal, the method also comprises:
Described terminal is obtained high 36 information of the base station identifier carried in the second attached bag of auxiliary superframe head, according to complete base station identifier, judge whether current sub-base stations is the accessible proprietary sub-base stations of terminal, if not, terminal is classified this base station as inappropriate base station and is screened out, and ends this Cell searching and again initiates the process of other base station of scanning; If so, terminal selects this base station to be accessed.
5. according to arbitrary described base station search method in claim 1 to 4, it is characterized in that, before the method, also comprise: described terminal is upgraded the white table that self preserves, and is specially:
At the self-organizing network server, be proprietary sub-base stations while distributing new cell identifier, the self-organizing network server is handed down to affected terminal by the method for eating dishes without rice or wine by new cell identifier, and described terminal is upgraded the white table information that self preserves.
6. base station search method according to claim 1, is characterized in that, when described base station type shows that current base station is for open sub-base stations or macro base station, and the base station status indication information shows that when community allows access, described terminal directly starts access procedure.
7. a terminal, is characterized in that, mainly comprises module, judge module and access module are set, and wherein, set in advance base station selected condition in module is set;
Judge module, for receiving base station information, according to the base station information received and the base station selected condition set in advance in module is set, screen out the base station that does not meet the base station selected condition set in advance, and continues other base station of scanning; When meeting the base station selected condition set in advance, to access module, send the access notice;
Access module, for receiving the access notice from judge module, and start the terminal access procedure;
Wherein, described base station information comprises cell identifier and/or base station identifier, and/or the base station status indication information; The base station information that described basis receives and the base station selected condition set in advance in module is set, by the base station that does not meet the base station selected condition set in advance screen out into:
Described terminal is after down-going synchronous, according to the cell identifier carried in the secondary synchronization sequences obtained, the base station type comprised in cell identifier shows that current base station is proprietary sub-base stations, described terminal searches in the white table of self preserving whether corresponding cell identifier is arranged, if do not have, terminal is classified this base station as inappropriate base station and is screened out, and continues other base station of scanning.
8. terminal according to claim 7, is characterized in that, the base station of described terminal access comprises macro base station, ,Wei base station, little base station, sub-base stations;
Described sub-base stations comprises open sub-base stations, proprietary sub-base stations, and wherein proprietary sub-base stations comprises the proprietary sub-base stations of part, whole proprietary sub-base stations.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910222549.4A CN102065520B (en) | 2009-11-13 | 2009-11-13 | Base station searching method and terminal |
| PCT/CN2010/078291 WO2011057535A1 (en) | 2009-11-13 | 2010-11-01 | Method and terminal for searching base station |
| JP2012525878A JP2013503526A (en) | 2009-11-13 | 2010-11-01 | Base station search method and terminal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910222549.4A CN102065520B (en) | 2009-11-13 | 2009-11-13 | Base station searching method and terminal |
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| CN104137621B (en) * | 2012-02-28 | 2018-05-18 | 诺基亚技术有限公司 | For the measurement scheme of cell search |
| CN104735678B (en) * | 2013-12-24 | 2018-07-24 | 中国电信股份有限公司 | The Microcell sign acquiring method and system realized based on macro base station and base station |
| CN105101261B (en) * | 2015-06-23 | 2018-09-21 | 中国联合网络通信集团有限公司 | A kind of base station search method and device |
| CN107889110A (en) * | 2016-09-30 | 2018-04-06 | 中国移动通信集团公司 | A kind of method and device for preventing from accessing pseudo-base station |
| CN111478786B (en) * | 2019-01-24 | 2023-02-07 | 海能达通信股份有限公司 | Method, storage medium and communication system for automatically adapting to use system resource |
| CN112188492B (en) * | 2020-10-22 | 2022-08-26 | 中国联合网络通信集团有限公司 | Micro base station registration method and device and micro base station |
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| CN101047430A (en) * | 2006-06-16 | 2007-10-03 | 华为技术有限公司 | Method and system for selecting base station |
| EP1983786A1 (en) * | 2007-04-16 | 2008-10-22 | Nokia Siemens Networks Oy | Mobile telecommunications network device |
| WO2009045969A2 (en) * | 2007-10-01 | 2009-04-09 | Qualcomm Incorporated | Equivalent home id for mobile communications |
| WO2009049155A2 (en) * | 2007-10-12 | 2009-04-16 | Qualcomm Incorporated | Storing location information to locate a femto cell at a user equipment database |
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| CN102017671B (en) * | 2008-03-18 | 2013-11-20 | 诺基亚公司 | System and method for providing closed subscriber groups in a packet-based wireless communication system |
| US20090247157A1 (en) * | 2008-03-28 | 2009-10-01 | Qualcomm Incorporated | Femto cell system selection |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101047430A (en) * | 2006-06-16 | 2007-10-03 | 华为技术有限公司 | Method and system for selecting base station |
| EP1983786A1 (en) * | 2007-04-16 | 2008-10-22 | Nokia Siemens Networks Oy | Mobile telecommunications network device |
| WO2009045969A2 (en) * | 2007-10-01 | 2009-04-09 | Qualcomm Incorporated | Equivalent home id for mobile communications |
| WO2009049155A2 (en) * | 2007-10-12 | 2009-04-16 | Qualcomm Incorporated | Storing location information to locate a femto cell at a user equipment database |
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| CN102065520A (en) | 2011-05-18 |
| JP2013503526A (en) | 2013-01-31 |
| WO2011057535A1 (en) | 2011-05-19 |
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