CN101453749B - Method, system for implementing user equipment migration and radio network controller - Google Patents
Method, system for implementing user equipment migration and radio network controller Download PDFInfo
- Publication number
- CN101453749B CN101453749B CN2007101947282A CN200710194728A CN101453749B CN 101453749 B CN101453749 B CN 101453749B CN 2007101947282 A CN2007101947282 A CN 2007101947282A CN 200710194728 A CN200710194728 A CN 200710194728A CN 101453749 B CN101453749 B CN 101453749B
- Authority
- CN
- China
- Prior art keywords
- packet
- rlc entity
- trnc
- migration
- network controller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The invention discloses a method, a system and a radio network controller (RNC) for implementing user equipment (UE) relocation, wherein the method comprises: the UE relocates to a target RNC (TRNC) and the TRNC establishes a corresponding radio link control(RLC) entity for the UE; and the RLC entity receives a data packet transmitted by the UE and judges whether or not the serial number of the data packet is zero, stores the data packet if the serial number of the data packet is zero, and continues to receive a data packet and judge whether or not the serial number of the data packet is zero. The method, the system and the RNC can reduce dropped call rate during the relocation of the UE.
Description
Technical field
The present invention relates to wireless communication field, relate in particular to a kind of realization subscriber equipment (UE, UserEquipment) Qian Yi method, system and radio network controller (RNC, Radio NetworkController).
Background technology
In wireless cellular network, the sub-district of some numbers in each certain zone of RNC control, RNC also controls the wireless resource allocation of the UE that resides in these sub-districts simultaneously, and this sub-district is the Serving RNC (SRNC, Serving RNC) of UE.When UE moved to the sub-district of another RNC control from the sub-district that a RNC controls, the SRNC of this UE also changed, and this process is called the migration of this UE.
Referring to Fig. 1, Fig. 1 is the method flow diagram of existing techniques in realizing UE migration.
Step 101:SRNC measures the neighbor cell of sub-district, place by measuring control (Meas Ctrl) message control UE;
Step 102:UE is to SRNC return measurement report (Meas Rprt) message.
Step 103: because UE moves to Target RNC (TRNC, Target RNC), the measurement report message that SRNC reports according to UE, judgement is set up a Uu and is connected between UE and TRNC, set up Iur and be connected between SRNC and TRNC.
Step 104:UE sends measurement report (Meas Rprt) message to SRNC.In the UE transition process, can continue reporting measurement reports message.
The measurement report message that step 105:SRNC reports according to UE, the Radio Link between deletion UE and the SRNC.
Step 106:SRNC initiates migration, and TRNC carries out migration and prepares.In the migration set-up procedure, TRNC and core net (CN, Core Network) are set up Iu and are connected, and TRNC sets up the context of this UE, and are UE application respective wireless resource, control (RLC, Radio LinkControl) resource etc. as Radio Link; And TRNC also is the newly-built various entities relevant with Radio Resource of this UE, as the RLC entity.
Step 107: move ready after, SRNC triggers migration and carries out, and sends migration to TRNC and carries out (Reloc Commit) message, disconnect SRNC with between the Iur of TRNC be connected.
Step 108:TRNC carries out migration, send general land to UE and move Access Network mobility information (URTAN Mobility Info, Universal Terrestrial Radio Access NetworkMobility Info) message, notice UE will oneself be replaced by the SRNC of UE.UE rebuilds the RLC entity, and the RLC entity sequence number after the reconstruction is 0.
Step 109:UE returns the URTAN mobility information to new SRNC and confirms (URTANMobility Info Conf) message, notifies that the executed of desired replacing process finishes in the new SRNC step 108.
Finish the migration of the SRNC of UE by said process.In the above-mentioned steps 106, TRNC is the newly-built RLC entity of UE, because this RLC entity is newly-built, so its sequence number is for can be initialized to 0.After UE moves, in order to make UE at new RNS (RNS, RadioNetwork Subsystem) can normally receive and send signaling message in, Uu interfaces need between UE and new SRNC realize rlc layer synchronously, that is to say, for affirmation mode (AM, Affirm Mode) RLC, the sequence number of corresponding RLC entity should be consistent between UE and the new SRNC.In order to keep the unanimity of two ends RLC entity sequence number, TRNC carries out migration (this moment, TRNC became new SRNC) in the step 108, and after UE sends URTAN Mobility Info message, the RLC entity of UE need be rebuild, the sequence number of the RLC entity of the UE after the reconstruction is 0, to keep consistent with the sequence number of the RLC entity of new SRNC.In the step 109, UE returns URTAN Mobility Info Conf message to new SRNC, because the RLC entity of UE is just rebuild, the sequence number of RLC entity is 0, thereby the sequence number of this message packets will be since 0.
The inventor finds in realizing embodiment of the invention process: in the said process, may have following problem: because UE continues to RNC reporting measurement reports message in transition process, the sequence number of its RLC entity also continues to increase.If the action of reporting measurement reports message occurs in issuing after the URTAN Mobility Info message described in the step 108, and before UE rebuild the RLC entity, then the sequence number of the measurement report message packet that reports this moment was not 0; But, for original T RNC, owing to issued URTAN Mobility Info message, the sequence number of the packet that its expection receives should be 0, receive that sequence number is not behind 0 the measurement report message packet, packet before TRNC can think does not receive that so the RLC entity of TRNC issues bitmap, the RLC entity of notice UE resets.If network side configuration maximum reset number of times is 1, then this moment, irrecoverable property mistake just took place in UE, thereby call drop takes place.
Because in transition process, UE generally is a reporting measurement reports message periodically, and the cycle be the ms level, the probability that therefore above-mentioned scene takes place is bigger.As seen, UE is in the process of migration, and the probability that the call drop phenomenon takes place is higher.
Summary of the invention
The embodiment of the invention proposes a kind of method that realizes the UE migration, is used for being implemented in the process of UE migration, reduces the probability that the call drop phenomenon takes place.
The embodiment of the invention also proposes a kind of system and target radio network controller of the UE of realization migration, is used for being implemented in the process of UE migration, reduces the probability that the call drop phenomenon takes place.
Technical scheme of the present invention is achieved in that
A kind of method that realizes the UE migration comprises:
UE moves to TRNC, and TRNC is that described UE sets up corresponding RLC entity;
Described RLC entity receives the packet that UE sends, and judges whether the sequence number of described packet is 0, if, then preserve described packet, receive and preserve the follow-up data bag that UE sends; If not, then abandon this packet, whether sequence number that continue to carry out described reception packet and judgment data bag is 0 step.
A kind of system that realizes the UE migration comprises:
UE is used for the migration to TRNC, and sends packet to TRNC;
TRNC is used to the UE to described TRNC migration to set up corresponding RLC entity; Described RLC entity is used to receive the packet that UE sends, and judges whether the sequence number of described packet is 0, if, then preserve described packet, receive and preserve the follow-up data bag that UE sends; If not, then abandon this packet, whether sequence number that continue to carry out described reception packet and judgment data bag is 0 step.
A kind of radio network controller of realizing the UE migration comprises:
The RRC entity is used to the UE to this radio network controller migration to set up corresponding RLC entity;
Judge module is used to judge whether the sequence number of the packet that UE that described RLC entity is received sends is 0, if, then notify described RLC entity to preserve described packet, receive and also preserve the follow-up data bag that UE sends; If not, then notify the RLC entity to abandon this packet, continue to carry out described reception packet, and whether continue to carry out the sequence number of judging the packet that the RLC entity is received be 0 step.
As seen, method, system and the radio network controller of the realization UE migration that the embodiment of the invention proposes, the RLC entity that TRNC rebulids in the UE transition process is to the special processing of the packet received, that is: when the sequence number of receiving packet is not 0, directly abandon this packet, rather than trigger the bitmap process.By above-mentioned special processing, if make that TRNC can not notify the RLC entity of UE to reset, thereby reduce UE probability of call takes place in transition process when UE wrong report message was to TRNC in the transition process.
Description of drawings
Fig. 1 is the method flow diagram of existing techniques in realizing UE migration;
Fig. 2 realizes the method flow diagram of UE migration for the embodiment of the invention.
Embodiment
The embodiment of the invention proposes a kind of method that realizes the UE migration, and referring to Fig. 2, Fig. 2 comprises for the embodiment of the invention realizes the method flow diagram that UE moves:
Step 201:UE moves to TRNC, and TRNC is corresponding RLC entity for this UE sets up;
The RLC entity of step 202:TRNC receives the packet that UE sends, and judges whether the sequence number of described packet is 0, if then execution in step 203; If not, then abandon this packet, continue execution in step 202.
Step 203: preserve the packet that receives, receive and preserve the follow-up data bag that UE sends.Enter follow-up normal layer 2 (L2, Level 2) receiving course.
In the said method, step 202 and step 203 are carried out after step 108 shown in Figure 1.TRNC is after UE sends URTAN Mobility Info message in the step 108, TRNC expection receive sequence number is 0 packet, after this execution in step 202 and step 203, report TRNC by mistake if message takes place UE, then directly to abandon sequence number be not 0 packet to TRNC but do not trigger the bitmap process, the RLC entity of UE does not reset, and after TRNC receives that first sequence number is 0 packet, enters follow-up normal L2 receiving course.By this mechanism, can not change the accepting state of the RLC entity of TRNC, and make UE rebuild behind the RLC entity still can with the TRNC proper communication, thereby reduced the possibility that the call drop phenomenon takes place UE in transition process.
In addition, even the packet loss phenomenon takes place in transmission course UE really, it is 0 packet that TRNC can not receive sequence number, and above-mentioned steps 202 can Infinite Cyclic not gone down yet so.Because, can rely on the release link that resets of existing RLC entity in the prior art itself, just in step 202 number of times of packet discard surpass predefined in limited time, the RLC entity of TRNC can trigger the bitmap process, and notify the RLC entity of UE to reset, the sequence number of the packet of Fa Songing is again since 0 afterwards.
In the said method, the RLC entity in the step 201 is an AM RLC entity; TRNC is that the step that UE sets up corresponding RLC entity is specially: Radio Resource control (RRC, RadioResource Control) entity of TRNC is that UE sets up corresponding RLC entity.
The embodiment of the invention also proposes a kind of system of the UE of realization migration, comprising:
UE is used for the migration to TRNC, and sends packet to TRNC;
TRNC is used for setting up corresponding RLC entity as the UE to described TRNC migration certainly; Described RLC entity is used to receive the packet that UE sends, and judges whether the sequence number of described packet is 0, if, then preserve described packet, receive and preserve the follow-up data bag that UE sends; If not, whether sequence number that then continue to carry out described reception packet and judgment data bag is 0 step.
The embodiment of the invention also proposes a kind of radio network controller of the UE of realization migration, it is characterized in that described radio network controller comprises:
The RRC entity is used for setting up corresponding RLC entity as the UE to this radio network controller migration certainly;
Judge module is used to judge whether the sequence number of the packet that UE that described RLC entity is received sends is 0, if, then notify described RLC entity to preserve described packet, receive and also preserve the follow-up data bag that UE sends; If not, then notify the RLC entity continue to carry out described reception packet, and whether continue to carry out the sequence number of judging the packet that the RLC entity is received be 0 step.
Above-mentioned spider lines controller can further include:
Sending module is used for sending general land to UE and moves Access Network mobility information message;
Judge to start module, be used at described sending module after UE transmission general land moves Access Network mobility information message, starting judge module and carrying out described judgement.
Above-mentioned RRC entity can be used to the UE to this radio network controller migration to set up corresponding AM RLC entity.
As seen, method, system and radio network controller that the embodiment of the invention proposes, at TRNC after UE issues URTAN Mobility Info message, the RLC of TRNC is not that 0 packet is only done discard processing but do not issued bitmap to the sequence number of receiving, thereby avoid in transition process because the phenomenon that resets of the RLC entity of the UE that wrong report caused of UE, thereby can reduce in the UE transition process probability of call takes place.
Claims (9)
1. method that realizes user equipment (UE) migration is characterized in that described method comprises:
UE is to target radio network controller TRNC migration, and TRNC is that described UE sets up corresponding Radio Link control RLC entity;
Described RLC entity receives the packet that UE sends, and judges whether the sequence number of described packet is 0, if, then preserve described packet, receive and preserve the follow-up data bag that UE sends; If not, then abandon this packet, whether sequence number that continue to carry out described reception packet and judgment data bag is 0 step.
2. method according to claim 1 is characterized in that, the packet that described RLC entity receives the UE transmission further comprises before:
TRNC sends general land to UE and moves Access Network mobility information message.
3. method according to claim 1 is characterized in that, described RLC entity is: affirmation mode AM RLC entity.
4. method according to claim 1 is characterized in that, described TRNC is that the step that UE sets up corresponding RLC entity comprises:
The radio resource control RRC entity of described TRNC is that UE sets up corresponding RLC entity.
5. method according to claim 1, it is characterized in that, described method further comprises: when continuous receive sequence number is not the number of times of 0 packet when surpassing predefined threshold value, and the RLC entity triggers bitmap process of described TRNC, the RLC entity of notice UE resets.
6. system that realizes UE migration is characterized in that described system comprises:
UE is used for the migration to TRNC, and sends packet to TRNC;
TRNC is used to the UE to described TRNC migration to set up corresponding RLC entity; Described RLC entity is used to receive the packet that UE sends, and judges whether the sequence number of described packet is 0, if, then preserve described packet, receive and preserve the follow-up data bag that UE sends; If not, then abandon this packet, whether sequence number that continue to carry out described reception packet and judgment data bag is 0 step.
7. radio network controller of realizing UE migration is characterized in that described radio network controller comprises:
The RRC entity is used to the UE to this radio network controller migration to set up corresponding RLC entity;
Judge module is used to judge whether the sequence number of the packet that UE that described RLC entity is received sends is 0, if, then notify described RLC entity to preserve described packet, receive and also preserve the follow-up data bag that UE sends; If not, then notify the RLC entity to abandon this packet, continue to carry out described reception packet, and whether continue to carry out the sequence number of judging the packet that the RLC entity is received be 0 step.
8. radio network controller according to claim 7 is characterized in that, described radio network controller further comprises:
Sending module is used for sending general land to UE and moves Access Network mobility information message;
Judge to start module, be used at described sending module after UE transmission general land moves Access Network mobility information message, starting judge module and carrying out described judgement.
9. radio network controller according to claim 7 is characterized in that, described RRC entity is used to the UE to this radio network controller migration to set up corresponding AM RLC entity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101947282A CN101453749B (en) | 2007-11-29 | 2007-11-29 | Method, system for implementing user equipment migration and radio network controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101947282A CN101453749B (en) | 2007-11-29 | 2007-11-29 | Method, system for implementing user equipment migration and radio network controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101453749A CN101453749A (en) | 2009-06-10 |
| CN101453749B true CN101453749B (en) | 2010-06-23 |
Family
ID=40735713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101947282A Expired - Fee Related CN101453749B (en) | 2007-11-29 | 2007-11-29 | Method, system for implementing user equipment migration and radio network controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101453749B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1396782A (en) * | 2001-07-09 | 2003-02-12 | Lg电子株式会社 | Block data service in radio communication system |
| CN1783876A (en) * | 2004-12-03 | 2006-06-07 | 华为技术有限公司 | System and method for realizing packet data polymerized protocol function |
-
2007
- 2007-11-29 CN CN2007101947282A patent/CN101453749B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1396782A (en) * | 2001-07-09 | 2003-02-12 | Lg电子株式会社 | Block data service in radio communication system |
| CN1783876A (en) * | 2004-12-03 | 2006-06-07 | 华为技术有限公司 | System and method for realizing packet data polymerized protocol function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101453749A (en) | 2009-06-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109479230B (en) | Method for performing mobility processing of NB-IoT terminal and apparatus therefor | |
| US9144100B2 (en) | Method and apparatus for radio link failure recovery | |
| EP2127456B1 (en) | Method and apparatus for providing context recovery | |
| CN101848536B (en) | Radio resource control connection reestablishment method and base station | |
| JP5185997B2 (en) | Techniques for handling radio link failures in communication networks | |
| US10390266B2 (en) | Method and apparatus for inter-radio access network mobility | |
| CN105612786A (en) | User equipment and methods for fast handover failure recovery in 3gpp lte network | |
| CN101119570B (en) | Method for signaling of the compressed mode parameters to a mobile station | |
| CN103313325A (en) | Switching method and device and data processing method and device | |
| CN101841835A (en) | Switching optimization method, equipment and system | |
| CN101494884B (en) | Method for processing switch exception | |
| CN101370283A (en) | Method and apparatus for processing non-access layer message in switching course of evolution network | |
| CN102217406A (en) | Enhancements for operation of a timer | |
| CN104980980A (en) | Method, system and equipment for connection establishment | |
| CN104322104A (en) | Classifying failure reports as either current or stale for mobility robustness optimization adjustments | |
| CN101489273A (en) | Recovery method and system for wireless link failure | |
| CN101932042A (en) | Cell switching method, equipment and system | |
| CN102300187A (en) | Realizing method for increasing service call completion ratio and wireless network controller | |
| CN106031232A (en) | Method to reduce service interruption | |
| CN100499909C (en) | User equipment switching method in long-term evolvement network and system thereof | |
| CN102404809A (en) | Method and system for transferring data transmission channel | |
| CN103379558A (en) | Method for detecting switchover mobility problems between different network types and device | |
| CN102932833A (en) | Network switching control method, communication system and associated equipment | |
| CN101184323B (en) | Direct signaling connection rebuilding method | |
| CN103283182A (en) | Method, device and system for processing device fault |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100623 Termination date: 20181129 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |