CN102158303A - Method and user equipment for re-establishing uplink - Google Patents
Method and user equipment for re-establishing uplink Download PDFInfo
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Abstract
本发明公开了一种上行链路的重建立方法及用户设备，保证空口通信的正确性。所述重建立方法包括：在分组数据汇聚协议(PDCP)实体和无线链路控制(RLC)实体的重建立过程中，PDCP实体仅在确认RLC实体重建立完成后，才向RLC实体发送PDCP协议数据单元(PDU)。
The invention discloses an uplink re-establishment method and user equipment to ensure the correctness of air interface communication. The re-establishment method includes: during the re-establishment process of the Packet Data Convergence Protocol (PDCP) entity and the Radio Link Control (RLC) entity, the PDCP entity sends the PDCP protocol to the RLC entity only after confirming that the RLC entity is re-established. data unit (PDU).
Description
Technical field
The present invention relates to long evolving system or advanced long-term evolution system, relate in particular to the reconstruction method and the subscriber equipment of the up link in long evolving system or the advanced long-term evolution system.
Background technology
LTE or LTE-A subscriber equipment (UE, User Equipment) communicate by air interface Uu mouth and enode b (eNB, evolved Node B).On function, air protocol comprises user face protocol stack and chain of command protocol stack.User face protocol stack is made up of physical (L1), media access control layer (MAC), control sub layer of wireless link (RLC), packet data convergence layer (PDCP), user's face upper strata (User plane Upper layer) etc.; The chain of command protocol stack is made up of physical (L1), media access control layer (MAC), control sub layer of wireless link (RLC), packet data convergence layer (PDCP), radio resource control layer (RRC).
On up direction; the PDCP entity of UE receives the PDCP SDU (service data unit) of the packet on upper strata as the PDCP entity; form PDCP PDU (protocol Data Unit) after PDCP SDU being compressed (for for the data), integrity protection (for signaling), encrypt and add the PDCP head; the RLC entity that PDCP PDU submits to lower floor becomes RLC SDU, and the RLC entity provides under normal circumstances correct transmission for RLC SDU.
If variation has taken place such as the PDCP context in the transmission context, so for logic channel related in old context, need to suspend transfer of data, and in new context, continue, wherein, the reconstruction of up link is upright will be finished with RLC volume reconstruction Rob Roy by the PDCP volume reconstruction is upright, during specific implementation, the RLC entity of UE will abandon all just the RLC SDU in the RLC buffer memory and other data of producing from RLC SDU, and the PDCP entity sends PDCPSDU that situation retransmits needs according to upstream data and adopts new context to comprise to submit to the RLC entity after the processing of new security context and compressed context and transmit.But, RLC entity mistake occurs through regular meeting in the actual mechanical process and abandon the data conditions that PDCP sends to the RLC entity, thereby cause idle port communication to make a mistake.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of reconstruction method and subscriber equipment of up link, guarantees the correctness of idle port communication.
For solving the problems of the technologies described above, the invention provides a kind of reconstruction method of up link, comprising:
In the upright process of reconstruction of PDCP (PDCP) entity and Radio Link control (RLC) entity, the PDCP entity only after upright the finishing of affirmation RLC volume reconstruction, just sends PDCP protocol Data Unit (PDU) to the RLC entity.
Further, described PDCP entity is confirmed that the RLC volume reconstruction is upright to finish after receiving that RLC volume reconstruction that Radio Resource control (RRC) entity sends is upright and finishing indication; Perhaps
Described PDCP entity is confirmed that the RLC volume reconstruction is upright to finish after receiving that reconstruction that described RLC entity sends is upright and finishing indication.
Further, reshuffle or handoff procedure in, after receiving the reconfigure command or switching command that network side sends, the RRC entity of subscriber equipment (UE) sends to PDCP entity and RLC entity respectively and rebuilds upright indication, the indication correspondent entity carry out rebuild upright;
Described RLC entity is after rebuilding upright finishing, directly send and rebuild the upright indication of finishing to the PDCP entity, perhaps send to rebuild the upright indication of finishing by described RRC entity to the PDCP entity, described reconstruction is upright to be finished indication and is used to notify that the described RLC volume reconstruction of PDCP entity is upright finishes;
Described PDCP volume reconstruction is upright finishes the back and after receiving that described reconstruction is upright and finishing indication, just to RLC entity transmission PDCP PDU.
For solving the problems of the technologies described above, the present invention also provides a kind of reconstruction method of up link, comprising:
In the upright process of reconstruction of PDCP (PDCP) entity and Radio Link control (RLC) entity, described PDCP entity is after rebuilding upright finishing, rebuild the upright indication of finishing to the transmission of RLC entity, after indication RLC entity stops to abandon data, send PDCP PDU to described RLC entity.
Further, reshuffle or handoff procedure in, after UE received the reconfigure command or switching command that network side sends, the RRC entity of UE sent to PDCP entity and RLC entity respectively and rebuilds upright indication, the indication correspondent entity carry out rebuild upright; Described RLC entity begins to abandon the data in the buffer memory after receiving the upright indication of reconstruction; Described PDCP entity sends to described RLC entity that the reconstruction that is used to indicate it to stop to abandon data is upright finishes indication after rebuilding upright finishing; After described RLC entity is received that reconstruction that described PDCP entity sends is upright and finished indication, stop to abandon the data of receiving from the upper strata; Described PDCP entity sends PDCP PDU to described RLC entity.
For solving the problems of the technologies described above, the present invention also provides a kind of upright subscriber equipment of reconstruction of realizing up link, comprises the PDCP entity, RLC entity and RRC entity, wherein:
Described RRC entity, be used for sending the upright indication of reconstruction to described PDCP entity and RLC entity respectively, the indication correspondent entity is carried out to rebuild and is stood, and be used for after receiving that reconstruction that described RLC entity sends is upright and finishing indication, send to rebuild the upright indication of finishing to the PDCP entity, described reconstruction is upright to be finished indication and is used to notify that the described RLC volume reconstruction of PDCP entity is upright finishes;
Described RLC entity is used for rebuilding upright process according to the indication execution of described RRC entity, and is used for rebuilding the upright indication of finishing to described RRC entity transmission after rebuilding upright finishing;
Described PDCP entity is used for carrying out according to the indication of described RRC entity and rebuilds upright process, and be used for rebuild upright finish the back and receive that reconstruction that described RRC entity sends is upright finish indication after, to described RLC entity transmission PDCP PDU.
For solving the problems of the technologies described above, the present invention also provides a kind of upright subscriber equipment of reconstruction of realizing up link, comprises the PDCP entity, RLC entity and RRC entity, wherein:
Described RRC entity is used for sending the upright indication of reconstruction to described PDCP entity and RLC entity respectively, and it is upright that the indication correspondent entity is carried out reconstruction;
Described RLC entity, be used for carrying out the upright process of rebuilding according to the indication of described RRC entity, and be used for sending to described PDCP entity and rebuilding the upright indication of finishing rebuilding the upright back of finishing, described reconstruction is upright to be finished indication and is used to notify the described RLC volume reconstruction of PDCP entity to stand to finish;
Described PDCP entity is used for carrying out according to the indication of described RRC entity and rebuilds upright process, and be used for rebuild upright finish the back and receive that reconstruction that described RLC entity sends is upright finish indication after, to described RLC entity transmission PDCP PDU.
For solving the problems of the technologies described above, the present invention also provides a kind of upright subscriber equipment of reconstruction of realizing up link, comprises the PDCP entity, RLC entity and RRC entity, wherein:
Described RRC entity is used for sending the upright indication of reconstruction to described PDCP entity and RLC entity respectively, and it is upright that the indication correspondent entity is carried out reconstruction;
Described RLC entity is used for carrying out according to the indication of described RRC entity and rebuilds upright process, begins to abandon the data in the buffer memory, and is used for stopping to abandon data after receiving that reconstruction that described PDCP entity sends is upright to finish indication;
Described PDCP entity is used for carrying out according to the indication of described RRC entity and rebuilds upright process, and is used for sending to rebuild to described RLC entity and uprightly finishing indication rebuilding the upright back of finishing, and is used for to described RLC entity transmission PDCP PDU.
The invention provides the data synchronization mechanism in the upright and upright process of RLC volume reconstruction of PDCP volume reconstruction, after making that the RLC volume reconstruction is upright and finishing, the PDCP entity is just submitted PDCPPDU to the RLC entity, and this guarantees the correctness of idle port communication after reconstruction is upright, avoids the wasting of resources of eating dishes without rice or wine.
Description of drawings
Fig. 1 is the upright flow chart of the synchronous reconstruction of RRC control;
Fig. 2 is the upright flow chart of the synchronous reconstruction of RLC control;
Fig. 3 is the upright flow chart of the synchronous reconstruction of PDCP control.
Embodiment
To finding after the prior art analysis, because RLC entity and PDCP entity are rebuild upright process respectively independently, upright having finished of PDCP volume reconstruction then may occur and the RLC entity is not also finished the upright situation of rebuilding, this moment, the PDCP entity carried out the data that abandon that transfer of data just may cause the RLC mistake to the RLC entity.
Therefore, the invention provides the data synchronization mechanism in the upright and upright process of RLC volume reconstruction of a kind of PDCP volume reconstruction, will carry out after finishing in that the RLC volume reconstruction is upright with the transmission that guarantees the PDCP entity.
One of design of the present invention is: in the upright process of the reconstruction of PDCP entity and RLC entity, the PDCP entity only after upright the finishing of affirmation RLC volume reconstruction, just sends PDCP PDU to the RLC entity.Specifically referring to embodiment 1 and embodiment 2.
Another design of the present invention is: in the upright process of the reconstruction of PDCP entity and RLC entity, described PDCP entity is after rebuilding upright finishing, rebuild the upright indication of finishing to the transmission of RLC entity, after indication RLC entity stops to abandon data, send PDCP PDU to described RLC entity.Specifically referring to embodiment 3.
Below by embodiment the present invention is further elaborated.
Embodiment 1
Present embodiment is by the data sync of RRC entity control, referring to Fig. 1, may further comprise the steps:
Step 100, RRC entity send to rebuild to the PDCP entity stands indication, and indication PDCP entity is carried out to rebuild and stood;
Step 110, RRC entity send to rebuild to the RLC entity stands indication, and indication RLC entity is carried out to rebuild and stood;
Above-mentioned steps 100 and 110 there is no the sequencing of execution, and the condition that triggers the upright indication of RRC transmission reconstruction comprises one of following condition: (1) receives the reconfigure command that network side is sent out; (2) receive the switching command that network side sends.
Step 120, RLC entity are carried out the process of standing of rebuilding after receiving the upright indication of the reconstruction of RRC entity transmission;
The upright process of above-mentioned reconstruction for example comprises and empties data in buffer, finishes context and resets (comprising resetting of variable and timer) etc., and be not emphasis of the present invention owing to rebuild upright process itself, so this paper does not give unnecessary details.
Above-mentioned RLC entity comprises the RLC sending entity of transparent mode, the RLC sending entity of Unacknowledged Mode, and the RLC sending entity of affirmation mode.
Step 121, PDCP entity are carried out the process of standing of rebuilding after receiving the upright indication of the reconstruction of RRC entity transmission;
The upright process of the reconstruction of described PDCP entity for example comprises updating context, comprise the decompression context, the deciphering context, integrity verification context etc., and the PDCP SDU that will receive from the upper strata handles back generation PDCP PDU etc., because rebuilding upright process itself is not emphasis of the present invention, so this paper does not give unnecessary details.
Above-mentioned steps 120 and 121 does not have fixing execution sequence yet.
After step 130, RLC volume reconstruction are stood and finished, rebuild the upright indication of finishing to the transmission of RRC entity;
After step 140, RRC entity are received that reconstruction that the RLC entity sends is upright and finished indication, send to rebuild to the PDCP entity and uprightly finish indication, be used to indicate that the RLC volume reconstruction is upright finishes, that is to say that the RLC entity removed data in the buffer memory;
The reconstruction that the RRC entity sends to the PDCP entity is upright, and to finish indication can be that the reconstruction that sends of the RLC entity directly transmitted is upright finishes indication, the perhaps indication of RRC neotectonics, but purpose is to inform that PDCP entity RLC volume reconstruction is upright finishes in a word.
After step 150, PDCP entity are received that reconstruction that the RRC entity sends is upright and finished indication, just begin PDU to RLC entity submission PDCP.
Realize the subscriber equipment of present embodiment, comprise PDCP (PDCP) entity, Radio Link control (RLC) entity and Radio Resource control (RRC) entity, wherein:
Described RRC entity, be used for sending the upright indication of reconstruction to described PDCP entity and RLC entity respectively, the indication correspondent entity is carried out to rebuild and is stood, and be used for after receiving that reconstruction that described RLC entity sends is upright and finishing indication, send to rebuild the upright indication of finishing to the PDCP entity, described reconstruction is upright to be finished indication and is used to notify that the described RLC volume reconstruction of PDCP entity is upright finishes;
Described RLC entity is used for rebuilding upright process according to the indication execution of described RRC entity, and is used for rebuilding the upright indication of finishing to described RRC entity transmission after rebuilding upright finishing;
Described PDCP entity is used for carrying out according to the indication of described RRC entity and rebuilds upright process, and be used for rebuild upright finish the back and receive that reconstruction that described RRC entity sends is upright finish indication after, to described RLC entity transmission PDCP PDU.
Embodiment 2
Present embodiment is by the data sync of RLC entity control, referring to Fig. 2, may further comprise the steps:
Step 200, RRC entity send to the PDCP entity and rebuild upright indication;
Step 210, RRC entity send to the RLC entity and rebuild upright indication;
Above-mentioned steps 200 and 210 execution sequences are unfixing.The condition that triggers the RRC entity is with embodiment one.
Step 220, RLC entity receive that the RRC entity sends the upright indication of reconstruction after, carry out the upright process of rebuilding;
Step 221, PDCP entity are carried out the process of standing of rebuilding after receiving the upright indication of the reconstruction of RRC entity transmission;
Above-mentioned steps 220 and 221 execution sequences do not limit.
After step 230, RLC volume reconstruction are stood and finished, rebuild the upright indication of finishing to the transmission of PDCP entity, stand with indication RLC volume reconstruction and finish, the RLC entity has been finished the operation of data in the removing buffer memory;
After step 240, PDCP entity are received that reconstruction that the RLC entity sends is upright and finished indication, submit PDCP PDU to the RLC entity.
Realize the subscriber equipment of present embodiment, comprise the PDCP entity, RLC entity and RRC entity, wherein:
Described RRC entity is used for sending the upright indication of reconstruction to described PDCP entity and RLC entity respectively, and it is upright that the indication correspondent entity is carried out reconstruction;
Described RLC entity, be used for carrying out the upright process of rebuilding according to the indication of described RRC entity, and be used for sending to described PDCP entity and rebuilding the upright indication of finishing rebuilding the upright back of finishing, described reconstruction is upright to be finished indication and is used to notify the described RLC volume reconstruction of PDCP entity to stand to finish;
Described PDCP entity is used for carrying out according to the indication of described RRC entity and rebuilds upright process, and be used for rebuild upright finish the back and receive that reconstruction that described RLC entity sends is upright finish indication after, to described RLC entity transmission PDCP PDU.
Embodiment 3
Present embodiment is by the data sync of PDCP control, referring to Fig. 3, may further comprise the steps:
Step 300, RRC entity send to the PDCP entity and rebuild upright indication;
Step 310, RRC entity send to the RLC entity and rebuild upright indication;
Above-mentioned steps 100 and 110 there is no the sequencing of execution.
After step 320, RLC entity are received the upright indication of the reconstruction of RRC entity transmission, begin to carry out and rebuild the process of standing, begin to abandon data;
Step 321, PDCP entity are carried out the process of standing of rebuilding after receiving the upright indication of the reconstruction of RRC entity transmission;
Above-mentioned steps 320 and 321 does not have fixedly execution sequence.
Step 330, PDCP entity finish rebuild upright after, send to the RLC entity and to rebuild the upright indication of finishing;
After step 340, RLC entity are received that reconstruction that the PDCP entity sends is upright and finished indication, stop to abandon the data of receiving from the upper strata;
Step 350, the PDCP entity is submitted PDCP PDU to the RLC entity.
The upright indication of reconstruction that sends of RRC entity in the present embodiment is mainly used in indication RLC entity and begins to remove data in the buffer memory, and the PDCP entity is uprightly finished reconstruction that the back sends and stood and finish indication rebuilding, and is used to indicate the RLC entity to stop to clear data.Because the data of PDCP entity transmission after rebuilding upright finishing are new active data, therefore must indicate the RLC entity to stop to clear data, and could guarantee that data can not deleted by mistake.
Realize the subscriber equipment of present embodiment, comprise the PDCP entity, RLC entity and RRC entity, wherein:
Described RRC entity is used for sending the upright indication of reconstruction to described PDCP entity and RLC entity respectively, and it is upright that the indication correspondent entity is carried out reconstruction;
Described RLC entity is used for carrying out according to the indication of described RRC entity and rebuilds upright process, begins to abandon the data in the buffer memory, and is used for stopping to abandon data after receiving that reconstruction that described PDCP entity sends is upright to finish indication;
Described PDCP entity is used for carrying out according to the indication of described RRC entity and rebuilds upright process, and is used for sending to rebuild to described RLC entity and uprightly finishing indication rebuilding the upright back of finishing, and is used for to described RLC entity transmission PDCP PDU.
Various indications described in the foregoing description can send by existing message, perhaps send by newly-built specific messages.
Certainly; the present invention also can have numerous embodiments; in the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art are when making various corresponding changes or variation according to the present invention; in every case any modification of being done within the spirit and principles in the present invention, be equal to replacements, improvement, all should be included within the protection range of the appended claim of the present invention.
Claims (8)
1. the reconstruction method of a up link is characterized in that, comprising:
In the upright process of reconstruction of PDCP (PDCP) entity and Radio Link control (RLC) entity, the PDCP entity only after upright the finishing of affirmation RLC volume reconstruction, just sends PDCP protocol Data Unit (PDU) to the RLC entity.
2. the method for claim 1 is characterized in that,
Described PDCP entity is confirmed that the RLC volume reconstruction is upright to finish after receiving that RLC volume reconstruction that Radio Resource control (RRC) entity sends is upright and finishing indication; Perhaps
Described PDCP entity is confirmed that the RLC volume reconstruction is upright to finish after receiving that reconstruction that described RLC entity sends is upright and finishing indication.
3. method as claimed in claim 1 or 2 is characterized in that, described method further comprises:
Reshuffle or handoff procedure in, after receiving the reconfigure command or switching command that network side sends, the RRC entity of subscriber equipment (UE) sends to PDCP entity and RLC entity respectively and rebuilds upright indication, the indication correspondent entity carry out rebuild upright;
Described RLC entity is after rebuilding upright finishing, directly send and rebuild the upright indication of finishing to the PDCP entity, perhaps send to rebuild the upright indication of finishing by described RRC entity to the PDCP entity, described reconstruction is upright to be finished indication and is used to notify that the described RLC volume reconstruction of PDCP entity is upright finishes;
Described PDCP volume reconstruction is upright finishes the back and after receiving that described reconstruction is upright and finishing indication, just to RLC entity transmission PDCP PDU.
4. the reconstruction method of a up link is characterized in that, comprising:
In the upright process of reconstruction of PDCP (PDCP) entity and Radio Link control (RLC) entity, described PDCP entity is after rebuilding upright finishing, rebuild the upright indication of finishing to the transmission of RLC entity, after indication RLC entity stops to abandon data, send PDCP protocol Data Unit (PDU) to described RLC entity.
5. method as claimed in claim 4 is characterized in that, described method further comprises:
Reshuffle or handoff procedure in, after UE received the reconfigure command or switching command that network side sends, the RRC entity of UE sent to PDCP entity and RLC entity respectively and rebuilds upright indication, the indication correspondent entity carry out rebuild upright;
Described RLC entity begins to abandon the data in the buffer memory after receiving the upright indication of reconstruction; Described PDCP entity sends to described RLC entity that the reconstruction that is used to indicate it to stop to abandon data is upright finishes indication after rebuilding upright finishing;
After described RLC entity is received that reconstruction that described PDCP entity sends is upright and finished indication, stop to abandon the data of receiving from the upper strata;
Described PDCP entity sends PDCP PDU to described RLC entity.
6. the upright subscriber equipment of reconstruction of realizing up link comprises PDCP (PDCP) entity, Radio Link control (RLC) entity and Radio Resource control (RRC) entity, wherein:
Described RRC entity, be used for sending the upright indication of reconstruction to described PDCP entity and RLC entity respectively, the indication correspondent entity is carried out to rebuild and is stood, and be used for after receiving that reconstruction that described RLC entity sends is upright and finishing indication, send to rebuild the upright indication of finishing to the PDCP entity, described reconstruction is upright to be finished indication and is used to notify that the described RLC volume reconstruction of PDCP entity is upright finishes;
Described RLC entity is used for rebuilding upright process according to the indication execution of described RRC entity, and is used for rebuilding the upright indication of finishing to described RRC entity transmission after rebuilding upright finishing;
Described PDCP entity is used for carrying out according to the indication of described RRC entity and rebuilds upright process, and be used for rebuild upright finish the back and receive that reconstruction that described RRC entity sends is upright finish indication after, to described RLC entity transmission PDCP protocol Data Unit (PDU).
7. the upright subscriber equipment of reconstruction of realizing up link comprises PDCP (PDCP) entity, Radio Link control (RLC) entity and Radio Resource control (RRC) entity, wherein:
Described RRC entity is used for sending the upright indication of reconstruction to described PDCP entity and RLC entity respectively, and it is upright that the indication correspondent entity is carried out reconstruction;
Described RLC entity, be used for carrying out the upright process of rebuilding according to the indication of described RRC entity, and be used for sending to described PDCP entity and rebuilding the upright indication of finishing rebuilding the upright back of finishing, described reconstruction is upright to be finished indication and is used to notify the described RLC volume reconstruction of PDCP entity to stand to finish;
Described PDCP entity is used for carrying out according to the indication of described RRC entity and rebuilds upright process, and be used for rebuild upright finish the back and receive that reconstruction that described RLC entity sends is upright finish indication after, to described RLC entity transmission PDCP protocol Data Unit (PDU).
8. the upright subscriber equipment of reconstruction of realizing up link comprises PDCP (PDCP) entity, Radio Link control (RLC) entity and Radio Resource control (RRC) entity, wherein:
Described RRC entity is used for sending the upright indication of reconstruction to described PDCP entity and RLC entity respectively, and it is upright that the indication correspondent entity is carried out reconstruction;
Described RLC entity is used for carrying out according to the indication of described RRC entity and rebuilds upright process, begins to abandon the data in the buffer memory, and is used for stopping to abandon data after receiving that reconstruction that described PDCP entity sends is upright to finish indication;
Described PDCP entity is used for carrying out according to the indication of described RRC entity and rebuilds upright process, and is used for sending to rebuild to described RLC entity and uprightly finishing indication rebuilding the upright back of finishing, and is used for to described RLC entity transmission PDCP protocol Data Unit (PDU).
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| CN114586465A (en) * | 2020-09-29 | 2022-06-03 | 华为技术有限公司 | A state transition method and communication device |
| CN114586465B (en) * | 2020-09-29 | 2025-10-03 | 华为技术有限公司 | A state conversion method and communication device |
| CN114501686A (en) * | 2022-04-06 | 2022-05-13 | 四川创智联恒科技有限公司 | NR data reconstruction method |
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Application publication date: 20110817 |