CN102625390B - Method, terminal and serving BS that a kind of terminal switch and indicating terminal switch - Google Patents
Method, terminal and serving BS that a kind of terminal switch and indicating terminal switch Download PDFInfo
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Abstract
Method, terminal and serving BS that the embodiment of the present invention provides a kind of terminal switch and indicating terminal to switch, described terminal switching method comprises: terminal receives the broadcast that serving BS sends, and described broadcast comprises the indication information that terminal needs the downlink channel descriptor DCD/ uplink channel descriptor UCD upgrading target BS; After terminal receives described broadcast, according to the DCD/UCD information content of the described target BS preserved in the indication information of described DCD/UCD more new terminal; Terminal utilizes the described DCD/UCD information content after upgrading to access described target BS.The embodiment of the present invention makes terminal can obtain the DCD/UCD information of correct TBS in handoff procedure, thereby reduces the communication failures such as error code, improves and switches networking success rate.
Description
Technical field
The present invention relates to mobile communication technology field, particularly relate to a kind of method of terminal switch and indicating terminal switching, terminal and serving BS.
Background technology
WiMAX (WorldwideInteroperabilityforMicrowaveAccess, worldwide interoperability for microwave accesses) (802.16e) agreement formulated by IEEE (TheInstituteofElectricalandElectronicsEngineers, U.S. electric and electronics engineers) 802.16e working group.802.16e can support some individual features of mobile terminal, such as, switch, IDLE (mobile phone is in idle condition) etc.The reason that mobile terminal switches is normally because the service quality of terminal reduces, the reduction of Terminal Service quality can be that a lot of reasons causes, such as, the position of terminal there occurs change, or the position of terminal do not change but environment there occurs change etc.Terminal in order to maintain the quality of its link of eating dishes without rice or wine, then needs from the bad cell merge of service quality to service quality community relatively preferably.
Switching flow in WiMAX network is: BS (BaseStation) is by the MOB_NBR-ADV message cycle broadcast neighboring BS information (i.e. DCD (Downlinkchanneldescriptor of adjacent area, downlink channel descriptor)/UCD (Uplinkchanneldescriptor, uplink channel descriptor), the information that networking must obtain), then specific sweep spacing is consulted by MOB_SCN-REQ/RSP and MS, in sweep spacing, MS needs scan N BR-ADV (NeighborAdvertisement, broadcast) adjacent area message corresponding in message, then the community meeting switching condition is selected to initiate to switch.
In the process of network re-entry to Target cell, MS need scan Preamble (above/header) and be synchronized to Target cell, and after synchronous, wait-receiving mode DCD/UCD broadcast (referring to DCD broadcast or UCD broadcast here) obtains some corresponding network parameter information.Because DCD/UCD broadcast issues in the cycle, can not all send out by each frame, so the time that wait-receiving mode DCD/UCD broadcast spends is long.If MS can obtain DCD/UCD information in advance, so the time of Target cell will be accessed when greatly shortening switching.
In prior art, the base station of Serving cell can be placed in the DCD/UCDSetting of MOB_NBR-ADV message with the mode of TLV (TypeLengthValue, type lengths values) (the general DCD/UCD information content needs to represent with multiple TLV) periodic broadcasting the DCD/UCD information of neighbor base station (comprising target BS) to MS.Like this, by MOB_NBR-ADV message, MS just can know the DCD/UCD information of neighbor base station in advance, makes MS to target BS, can shorten handover delay by network re-entry quickly when switching.
SBS (ServingBaseStation, serving BS) multiple candidate TBS (TargetBaseStation can be carried in the MOB_NBR-ADV message that sends, target BS) DCD/UCD information, consider that DCD/UCD is periodic broadcasting, the frequency of change is relatively slow, so terminal is without the need to all resolving the identical message content of carrying in MOB_NBR-ADV message at every turn, so only when changing, just need to resolve.MOB_NBR-ADV message indicates the content of MOB_NBR-ADV message whether to there occurs change by the CCC (ConfigurationChangeCount, configuration change counter) comprised in MOB_NBR-ADV message.After terminal receives MOB_NBR-ADV message, if find that the CCC comprised in MOB_NBR-ADV message there occurs change, then retrieve the DCD/UCD information of each candidate TBS successively, and by downlink channel descriptor configuration change counter (DCDConfigurationChangeCount, DCDCCC)/uplink channel descriptor configuration change counter (UCDConfigurationChangeCount, UCDCCC) the DCD/UCD information of each candidate TBS is indicated whether to there occurs change, if there occurs change, just go to resolve the follow-up corresponding information content, such as, (this TLVEncodedNeighborinformation is general reference to resolve TLVEncodedNeighborinformation, previously described DCD/UCDsetting is one wherein), if do not changed, then terminal is without the need to resolving TLVEncodedNeighborinformation.
Putting into practice in prior art, according to the regulation of agreement, only have the DCD/UCD information content of TBS and SBS or different with the DCD/UCD information content of previous NBS time, the DCD/UCD information content of TBS just can be put in the TLV of the DCD/UCDSetting of MOB_NBR-ADV message and issue by SBS.For there being certain adjacent area in SBS, and the situation of TBS not this adjacent area, according to the description of existing protocol, TLV corresponding for the DCD/UCD information of this adjacent area can not be put in the DCD/UCDSetting of MOB_NBR-ADV message to issue by SBS.After that MS receives MOB_NBR-ADV, according to the regulation of existing protocol, MS can think that TBS exists the TLV identical with SBS by mistake, and can not think that TBS does not exist this TLV.Cause MS resolving resource to occur error code thus, and cause switching networking failure further or fall the communication failures such as net.
Summary of the invention
Method, terminal and serving BS that the embodiment of the present invention provides a kind of terminal switch and indicating terminal to switch, network successfully to ensure to switch.
On the one hand, embodiments provide a kind of method of terminal switch, described method comprises: terminal receives the broadcast that serving BS sends, and described broadcast comprises the indication information that terminal needs the downlink channel descriptor DCD/ uplink channel descriptor UCD upgrading target BS, after terminal receives described broadcast, according to the DCD/UCD information content of the described target BS preserved in the indication information of described DCD/UCD more new terminal, terminal utilizes the described DCD/UCD information content after upgrading to access described target BS, described broadcast comprises terminal needs the indication information of the DCD/UCD upgrading target BS to be specially: described broadcast comprises the downlink channel descriptor configuration change counter DCDCCC/ uplink channel descriptor configuration change counter UCDCCC of target BS, the DCDCCC/UCDCCC of described target BS is set to different from the DCDCCC/UCDCCC of described target BS reality, after described terminal receives described broadcast, according to the DCD/UCD information content of the target BS preserved in the indication information of described DCD/UCD more new terminal, specifically comprise: after described terminal receives described broadcast, obtain the DCDCCC/UCDCCC in described broadcast, and the DCDCCC/UCDCCC of the target BS self preserved with described terminal compares, if the DCDCCC/UCDCCC in described broadcast is different from the DCDCCC/UCDCCC of the target BS that described terminal self is preserved, then described terminal parses goes out the DCD/UCD information content in described broadcast, and upgrades the DCD/UCD information content of described terminal self preservation according to the DCD/UCD information content parsed.
On the other hand, embodiments provide a kind of method that indicating terminal switches, described method comprises: serving BS detects in the DCD/UCD information content that this serving BS comprises to have at least a DCD/UCD information content not comprised by target BS, described serving BS sends broadcast to terminal, described broadcast comprises the indication information that terminal needs to upgrade the DCD/UCD information content of described target BS, after receiving described broadcast to make described terminal, according to the DCD/UCD information content of preserving in the indication information of described DCD/UCD more new terminal, and the described DCD/UCD information content after upgrading is utilized to be switched to described target BS, described serving BS sends broadcast to terminal, the indication information that described broadcast comprises terminal needs to upgrade the DCD/UCD information content of described TBS is specially: described serving BS sends broadcast to terminal, wherein, the DCDCCC/UCDCCC of target BS described in described broadcast is set to different from the DCDCCC/UCDCCC of described target BS reality, after receiving described broadcast to make described terminal, obtain the DCDCCC/UCDCCC in described broadcast, and the DCDCCC/UCDCCC of the target BS self preserved with described terminal compares, if the DCDCCC/UCDCCC in described broadcast is different from the DCDCCC/UCDCCC of the target BS that described terminal self is preserved, then described terminal parses goes out the DCD/UCD information content in described broadcast, and upgrades the DCD/UCD information content of described terminal self preservation according to the DCD/UCD information content parsed.
On the other hand, embodiments provide a kind of terminal, described terminal comprises: memory cell, for preserving the downlink channel descriptor DCD/ uplink channel descriptor ucd message content of target BS; Receiving element, for receiving the broadcast that serving BS sends, described broadcast comprises the indication information needing the DCD/UCD upgrading described target BS; Updating block, after receiving described broadcast, upgrades in described memory cell the DCD/UCD information content of the described target BS preserved according to the indication information of described DCD/UCD; Switch unit, accesses described target BS for the DCD/UCD information content after utilizing described renewal; Described memory cell is further used for the downlink channel descriptor configuration change counter DCDCCC/ uplink channel descriptor configuration change counter UCDCCC preserving target BS; Described updating block, specifically for obtaining the DCDCCC/UCDCCC in described broadcast, and compares with the DCDCCC/UCDCCC of target BS that preserves in described memory cell; If the DCDCCC/UCDCCC in described broadcast is different from the DCDCCC/UCDCCC of the target BS preserved in described memory cell, then parse the DCD/UCD information content in described broadcast, and upgrade the DCD/UCD information content of preserving in described memory cell according to the DCD/UCD information content parsed.
On the other hand, embodiments provide a kind of serving BS, described serving BS comprises: monitoring means, has at least a DCD/UCD information content not comprised by target BS for detecting in the DCD/UCD information content that serving BS comprises; Transmitting element, for sending broadcast to terminal, described broadcast comprises the indication information that terminal needs to upgrade the DCD/UCD information content of described target BS, after receiving described broadcast to make described terminal, according to the DCD/UCD information content of preserving in the indication information of described DCD/UCD more new terminal, and the described DCD/UCD information content after upgrading is utilized to be switched to described target BS; Described transmitting element is specifically for sending broadcast to terminal, the DCDCCC/UCDCCC of target BS described in described broadcast is set to different from the DCDCCC/UCDCCC of described target BS reality, after receiving described broadcast to make described terminal, obtain the DCDCCC/UCDCCC in described broadcast, and the DCDCCC/UCDCCC of the target BS self preserved with described terminal compares; If the DCDCCC/UCDCCC in described broadcast is different from the DCDCCC/UCDCCC of the target BS that described terminal self is preserved, then described terminal parses goes out the DCD/UCD information content in described broadcast, and upgrades the DCD/UCD information content of described terminal self preservation according to the DCD/UCD information content parsed.
Technique scheme has following beneficial effect: because adopt the mode triggered by BS, namely the technological means of the otherness of SBS and TBS content is clearly indicated, so make terminal can obtain the DCD/UCD information of correct TBS in handoff procedure, thereby reduce the communication failures such as error code, improve and switch networking success rate.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the method flow diagram of a kind of terminal switch of the embodiment of the present invention;
Fig. 2 is the method flow diagram that a kind of indicating terminal of the embodiment of the present invention switches;
Fig. 3 is a kind of terminal structure schematic diagram of the embodiment of the present invention;
Fig. 4 is a kind of serving BS structural representation of the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
In prior art, the one or more adjacent area comprised for SBS and TBS do not comprise the situation of this one or more adjacent area, according to existing protocol, SBS is TLV corresponding for the one or more adjacent area can not be put in the DCD/UCDSetting of MOB_NBR-ADV message to issue when sending MOB_NBR-ADV message.After MS receives MOB_NBR-ADV, MS can think that TBS has the adjacent area identical with SBS by mistake, and can not think that TBS does not exist this one or more adjacent area.After MS is switched to TBS, because DCDCCC/UCDCCC does not change, though after receive the DCD/UCD broadcast that TBS sends, also can not carry out the renewal of the DCD/UCD information content of adjacent area.MS is always using the TLV of the TLV of SBS as TBS, and MS according to the DCD/UCD information content resolving resource of TBS reality, by causing lasting error code, can not cause and switch networking failure or fall the communication failures such as net thus.
Such as, for public area up in UCD, certain public area may not be there is in some TBS, but SBS is TLV corresponding for this public area can not be put in the DCD/UCDSetting of MOB_NBR-ADV message to be handed down to MS's when sending MOB_NBR-ADV message, after MS receives MOB_NBR-ADV message, find not change about UCDCCC on the DCDCCC/ of this public area, take for TBS and exist and follow the public area that SBS is the same, cause MS also to follow mistake to the parsing that TBS issues data thus.
For this reason, the present invention provides corresponding solution by following examples.
Embodiment one
As shown in Figure 1, for the method flow diagram of a kind of terminal switch of the embodiment of the present invention, when SBS finds to have at least one not comprised by TBS in the DCD/UCD information content that comprises of SBS, carried out the DCD/UCD information content of the TBS that indicating terminal is more preserved in new terminal by SBS, the method comprises:
101, terminal receives the broadcast that serving BS SBS sends, and described broadcast comprises the indication information that terminal needs the downlink channel descriptor DCD/ uplink channel descriptor UCD upgrading target BS TBS;
102, after terminal receives described broadcast, according to the DCD/UCD information content of the described TBS preserved in the indication information of the DCD/UCD in broadcast more new terminal;
103, the DCD/UCD information content after terminal utilizes described renewal accesses described TBS.
Optionally, above-mentioned broadcast comprise described at least one to be comprised by SBS but not by the DCD/UCD information content that TBS comprises.In step 102, after described terminal receives described broadcast, according to the DCD/UCD information content of preserving in the indication information of described DCD/UCD more new terminal, specifically comprise: after described terminal receives described broadcast, by resolve broadcast obtain described at least one to be comprised by SBS but not by the DCD/UCD information content that TBS comprises, described terminal upgrades the DCD/UCD information content of the TBS that described terminal self is preserved, and makes it not comprise at least one DCD/UCD information content described.
Suppose that the adjacent area of community, SBS place comprises adjacent area 1, adjacent area 2 and adjacent area 3, SBS can get the DCD/UCD information content of adjacent area 1, adjacent area 2 and adjacent area 3, and the DCD/UCD information content of adjacent area 1, adjacent area 2 and adjacent area 3 can be expressed as TLV1, TLV2, TLV3 respectively in the mode of TLV.Terminal is about to be switched to TBS, and the adjacent area of community, TBS place comprises the DCD/UCD information content that adjacent area 1 and adjacent area 2, TBS can obtain adjacent area 1 and adjacent area 2, is expressed as TLV1 and TLV2.SBS and TBS can intercom mutually, and obtain the TLV information of the other side, the TBS that SBS can be known only has TLV1 and TLV2, and does not have TLV3.In the prior art when TBS does not have TLV3, base station can not notification terminal, terminal can be defaulted as TBS and SBS to be had identical TLV and (namely all has TLV1, TLV2 and TLV3), cause terminal thus in the process of access TBS, utilize the DCD/UCD information of mistake remove resolving resource and produce error code.SBS to be comprised by SBS by the embodiment of the present invention but TBS does not comprise TLV3 sends to terminal, the DCD/UCD information content of the TBS that described terminal self is preserved is upgraded according to TLV3 to make described terminal, it is made not wrap the DCD/UCD information content corresponding to TLV3, thus, terminal, in the process of access TBS, can utilize correct DCD/UCD information to remove resolving resource.SBS is comprised by broadcast by the embodiment of the present invention and the TBS DCD/UCD information content not to be covered is handed down to terminal, the broadcast that terminal can directly be issued according to SBS upgrades the DCD/UCD information content of the TBS that himself is preserved, speed, when the DCD/UCD information content difference of SBS and TBS is less, can from saving transport overhead to a great extent.
Or, optionally, above-mentioned broadcast comprises the DCDCCC/UCDCCC of TBS, and the DCDCCC/UCDCCC of described TBS is set to different from the DCDCCC/UCDCCC of described TBS reality, needs the DCDCCC/UCDCCC information content upgrading target BS to indicate described terminal.In step 102, after described terminal receives described broadcast, according to the DCD/UCD information content of preserving in the indication information of described DCD/UCD more new terminal, specifically can comprise: after described terminal receives described broadcast, obtain the DCDCCC/UCDCCC in described broadcast, and the DCDCCC/UCDCCC of the TBS self preserved with described terminal compares; If when the DCDCCC/UCDCCC in described broadcast is different from the DCDCCC/UCDCCC of the TBS that described terminal self is preserved, then described terminal parses goes out the DCD/UCD information content in described broadcast, and upgrades the DCD/UCD information content of described terminal self preservation according to the DCD/UCD information content parsed.The embodiment of the present invention makes terminal obtain the DCD/UCD information content of correct TBS, and utilizes the DCD/UCD information content of correct TBS to remove resolving resource, thereby reduces the communication failures such as error code, improves and switches networking success rate.
Corresponding to above-mentioned Fig. 1, as shown in Figure 2, be the method flow diagram that a kind of indicating terminal of the embodiment of the present invention switches, described method comprises:
201, serving BS SBS detects in the DCD/UCD information content that this SBS comprises to have at least a DCD/UCD information content not comprised by target BS;
202, described SBS sends broadcast to terminal, described broadcast comprises the indication information that terminal needs to upgrade the DCD/UCD information content of described TBS, after receiving described broadcast to make described terminal, according to the DCD/UCD information content of preserving in the indication information of described DCD/UCD more new terminal, and the described DCD/UCD information content after upgrading is utilized to be switched to described TBS.
In above-described embodiment, the terminal that the broadcast that SBS sends to terminal comprises needs the indication information of the DCD/UCD information content upgrading TBS to be specifically as follows the following two kinds:
(1) when having at least a DCD/UCD information content not comprised by TBS during SBS detects the DCD/UCD information content that this SBS comprises, at least one DCD/UCD information content described is comprised in the broadcast that described SBS sends to described terminal, there is this at least one DCD/UCD information content with SBS described in indicating terminal, and there is not this at least one DCD/UCD information content in TBS.The embodiment of the present invention sends broadcast by SBS and to be comprised by SBS but the TBS DCD/UCD information content not to be covered is handed down to terminal, the broadcast that terminal can be issued according to SBS directly upgrades the DCD/UCD information content of the TBS that himself is preserved, speed, when the DCD/UCD information content difference of SBS and TBS is less, can from saving transport overhead to a great extent.
Or,
(2) when having at least a DCD/UCD information content not comprised by TBS during SBS detects the DCD/UCD information content that this SBS comprises, described SBS sends to the broadcast of described terminal to comprise the DCDCCC/UCDCCC of TBS, and the DCDCCC/UCDCCC of described TBS is set to different from the DCDCCC/UCDCCC of described TBS reality.
The embodiment of the present invention, by the instruction of SBS, makes terminal obtain the DCD/UCD information of correct TBS, thereby reduces the communication failures such as error code, improves and switches networking success rate.
Embodiment two
As shown in Figure 3, be a kind of terminal structure schematic diagram of the embodiment of the present invention, described terminal comprises:
Memory cell 30, memory cell, for preserving the DCD/UCD information content of TBS;
Receiving element 31, for receiving the broadcast that serving BS SBS sends, described broadcast comprises the indication information needing the DCD/UCD upgrading target BS TBS;
Updating block 32, for after receiving element 31 receives described broadcast, upgrades the DCD/UCD information content of the described TBS preserved in memory cell 31 according to the indication information of described DCD/UCD;
Switch unit 33, accesses described TBS for the DCD/UCD information content after utilizing described renewal.
Optionally, described broadcast comprises at least one and to be comprised by SBS but not by the DCD/UCD information content that TBS comprises, described updating block 32, specifically for obtained by described broadcast described at least one to be comprised by SBS but not by the DCD/UCD information content that TBS comprises, and upgrade the DCD/UCD information content of the TBS preserved in memory cell 30, make it not comprise at least one DCD/UCD information content described.SBS is comprised by broadcast by the embodiment of the present invention and the TBS DCD/UCD information content not to be covered is handed down to terminal, the broadcast that terminal can be issued according to SBS upgrades the DCD/UCD information content of the TBS that himself is preserved, and speed, when the DCD/UCD information content difference of SBS and TBS is less, can from saving transport overhead to a great extent.
Or, described broadcast comprises the DCDCCC/UCDCCC of TBS, the DCDCCC/UCDCCC of described TBS is set to different from the DCDCCC/UCDCCC of described TBS reality, needs the DCDCCC/UCDCCC information content upgrading target BS to indicate described terminal.Optionally, described memory cell 30 is further used for the downlink channel descriptor configuration change counter DCDCCC/ uplink channel descriptor configuration change counter UCDCCC preserving target BS; Described updating block 32, be further used for obtaining the DCDCCC/UCDCCC in described broadcast, and the DCDCCC/UCDCCC of the TBS preserved with described memory cell 30 compares, if when the DCDCCC/UCDCCC in described broadcast is different from the DCDCCC/UCDCCC of the TBS preserved in described memory cell 30, then parse the DCD/UCD information content in described broadcast, and upgrade the DCD/UCD information content of preserving in described memory cell 30 according to the DCD/UCD information content parsed.
The embodiment of the present invention makes terminal obtain the DCD/UCD information content of correct TBS, and utilizes the DCD/UCD information content of correct TBS to remove resolving resource, thereby reduces the communication failures such as error code, improves and switches networking success rate.
Corresponding to above-mentioned Fig. 3, as shown in Figure 4, be a kind of serving BS structural representation of the embodiment of the present invention, described serving BS comprises:
Whether monitoring means 41, having at least one not comprised by target BS TBS for detecting in the DCD/UCD information content that SBS comprises, if it is notifying transmitting element 42;
Transmitting element 42, for receive detecting unit 41 notice after send broadcast to terminal, described broadcast comprises the indication information that terminal needs to upgrade the DCD/UCD information content of described TBS, after receiving described broadcast to make described terminal, according to the DCD/UCD information content of preserving in the indication information of described DCD/UCD more new terminal, and the described DCD/UCD information content after upgrading is utilized to be switched to described TBS.
Alternatively, described transmitting element 42, specifically for the broadcast sent to described terminal, at least one DCD/UCD information content described is comprised in described broadcast, comprise this at least one DCD/UCD information content with SBS described in indicating terminal, and TBS does not comprise this at least one DCD/UCD information content.SBS is existed by broadcast by the embodiment of the present invention and the non-existent DCD/UCD information content of TBS is handed down to terminal, the broadcast that terminal can be issued according to SBS upgrades the DCD/UCD information content of the TBS that himself is preserved, and speed, when the DCD/UCD information content difference of SBS and TBS is less, can from saving transport overhead to a great extent.
Or optionally, described broadcast comprises the DCDCCC/UCDCCC of TBS, the DCDCCC/UCDCCC of described TBS is set to different from the DCDCCC/UCDCCC of described TBS reality.Described transmitting element 42, specifically for the broadcast sent to described terminal, described broadcast comprises the DCDCCC/UCDCCC of TBS, and the DCDCCC/UCDCCC of described TBS is set to different from the DCDCCC/UCDCCC of described TBS reality.
The embodiment of the present invention upgrades the DCD/UCD information of TBS by the indicating terminal of SBS, terminal is made to obtain the DCD/UCD information content of correct TBS, and utilize the DCD/UCD information content of correct TBS to remove resolving resource, thereby reduce the communication failures such as error code, improve and switch networking success rate.
One of ordinary skill in the art will appreciate that all or part of step realized in above-described embodiment method can carry out instruction related hardware by program to have come, described program can be stored in a computer read/write memory medium, this program is when performing, comprise above-mentioned all or part of step, described storage medium, as: ROM/RAM, disk, CD etc.
Above-described embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only the specific embodiment of the present invention; the protection range be not intended to limit the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a method for terminal switch, is characterized in that, described method comprises:
Terminal receives the broadcast that serving BS sends, and described broadcast comprises the indication information that terminal needs the downlink channel descriptor DCD/ uplink channel descriptor UCD upgrading target BS;
After terminal receives described broadcast, according to the DCD/UCD information content of the described target BS preserved in the indication information of described DCD/UCD more new terminal;
Terminal utilizes the described DCD/UCD information content after upgrading to access described target BS;
Described broadcast comprises terminal needs the indication information of the DCD/UCD upgrading target BS to be specially: described broadcast comprises the downlink channel descriptor configuration change counter DCDCCC/ uplink channel descriptor configuration change counter UCDCCC of target BS, the DCDCCC/UCDCCC of described target BS is set to different from the DCDCCC/UCDCCC of described target BS reality, after described terminal receives described broadcast, according to the DCD/UCD information content of the target BS preserved in the indication information of described DCD/UCD more new terminal, specifically comprise:
After described terminal receives described broadcast, obtain the DCDCCC/UCDCCC in described broadcast, and the DCDCCC/UCDCCC of the target BS self preserved with described terminal compares;
If the DCDCCC/UCDCCC in described broadcast is different from the DCDCCC/UCDCCC of the target BS that described terminal self is preserved, then described terminal parses goes out the DCD/UCD information content in described broadcast, and upgrades the DCD/UCD information content of described terminal self preservation according to the DCD/UCD information content parsed.
2. the method for claim 1, it is characterized in that, described broadcast comprises terminal needs the indication information of DCD/UCD upgrading target BS to be specially: described broadcast comprises at least one serviced base station and to comprise but not by the DCD/UCD information content that TBS comprises, after described terminal receives described broadcast, according to the DCD/UCD information content of the target BS preserved in the indication information of described DCD/UCD more new terminal, specifically comprise:
After described terminal receives described broadcast, at least one DCD/UCD information content described is obtained by resolving described broadcast, described terminal upgrades the DCD/UCD information content of the target BS that described terminal self is preserved, and after making renewal, the DCD/UCD information content of the target BS that described terminal is preserved does not comprise at least one DCD/UCD information content described.
3. a method for indicating terminal switching, it is characterized in that, described method comprises:
Serving BS detects in the DCD/UCD information content that this serving BS comprises to have at least a DCD/UCD information content not comprised by target BS;
Described serving BS sends broadcast to terminal, described broadcast comprises the indication information that terminal needs to upgrade the DCD/UCD information content of described target BS, after receiving described broadcast to make described terminal, according to the DCD/UCD information content of preserving in the indication information of described DCD/UCD more new terminal, and the described DCD/UCD information content after upgrading is utilized to be switched to described target BS;
Described serving BS sends broadcast to terminal, and the indication information that described broadcast comprises terminal needs to upgrade the DCD/UCD information content of described target BS is specially:
Described serving BS sends broadcast to terminal, wherein, the DCDCCC/UCDCCC of target BS described in described broadcast is set to different from the DCDCCC/UCDCCC of described target BS reality, after receiving described broadcast to make described terminal, obtain the DCDCCC/UCDCCC in described broadcast, and the DCDCCC/UCDCCC of the target BS self preserved with described terminal compares; If the DCDCCC/UCDCCC in described broadcast is different from the DCDCCC/UCDCCC of the target BS that described terminal self is preserved, then described terminal parses goes out the DCD/UCD information content in described broadcast, and upgrades the DCD/UCD information content of described terminal self preservation according to the DCD/UCD information content parsed.
4. method as claimed in claim 3, is characterized in that, described serving BS sends broadcast to terminal and specifically comprises:
The broadcast that described serving BS sends to described terminal, at least one DCD/UCD information content described is comprised in described broadcast, there is at least one DCD/UCD information content described with serving BS described in indicating terminal, and there is not at least one DCD/UCD information content described in described target BS.
5. a terminal, is characterized in that, described terminal comprises:
Memory cell, for preserving the downlink channel descriptor DCD/ uplink channel descriptor ucd message content of target BS;
Receiving element, for receiving the broadcast that serving BS sends, described broadcast comprises the indication information needing the DCD/UCD upgrading described target BS;
Updating block, after receiving described broadcast, upgrades in described memory cell the DCD/UCD information content of the described target BS preserved according to the indication information of described DCD/UCD;
Switch unit, accesses described target BS for the DCD/UCD information content after utilizing described renewal;
Described memory cell is further used for the downlink channel descriptor configuration change counter DCDCCC/ uplink channel descriptor configuration change counter UCDCCC preserving target BS; Described updating block, specifically for obtaining the DCDCCC/UCDCCC in described broadcast, and compares with the DCDCCC/UCDCCC of target BS that preserves in described memory cell; If the DCDCCC/UCDCCC in described broadcast is different from the DCDCCC/UCDCCC of the target BS preserved in described memory cell, then parse the DCD/UCD information content in described broadcast, and upgrade the DCD/UCD information content of preserving in described memory cell according to the DCD/UCD information content parsed.
6. terminal as claimed in claim 5, it is characterized in that, described updating block, after receiving described broadcast, obtain serving BS by described broadcast to comprise but the target BS DCD/UCD information content not to be covered, and upgrade the DCD/UCD information content of target BS that described terminal self preserves, after making renewal, the DCD/UCD information content of the target BS that described terminal is preserved does not comprise serving BS in described broadcast and comprises but the target BS DCD/UCD information content not to be covered.
7. a serving BS, is characterized in that, described serving BS comprises:
Monitoring means, has at least a DCD/UCD information content not comprised by target BS for detecting in the DCD/UCD information content that serving BS comprises;
Transmitting element, for sending broadcast to terminal, described broadcast comprises the indication information that terminal needs to upgrade the DCD/UCD information content of described target BS, after receiving described broadcast to make described terminal, according to the DCD/UCD information content of preserving in the indication information of described DCD/UCD more new terminal, and the described DCD/UCD information content after upgrading is utilized to be switched to described target BS; Described transmitting element is specifically for sending broadcast to terminal, the DCDCCC/UCDCCC of target BS described in described broadcast is set to different from the DCDCCC/UCDCCC of described target BS reality, after receiving described broadcast to make described terminal, obtain the DCDCCC/UCDCCC in described broadcast, and the DCDCCC/UCDCCC of the target BS self preserved with described terminal compares; If the DCDCCC/UCDCCC in described broadcast is different from the DCDCCC/UCDCCC of the target BS that described terminal self is preserved, then described terminal parses goes out the DCD/UCD information content in described broadcast, and upgrades the DCD/UCD information content of described terminal self preservation according to the DCD/UCD information content parsed.
8. serving BS as claimed in claim 7, is characterized in that, the broadcast of described transmitting element specifically for sending to described terminal, comprises at least one DCD/UCD information content described in described broadcast.
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