CN102025692B - Method and system for resetting media access control protocol layer of user terminal - Google Patents

Method and system for resetting media access control protocol layer of user terminal Download PDF

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Publication number
CN102025692B
CN102025692B CN200910171874.2A CN200910171874A CN102025692B CN 102025692 B CN102025692 B CN 102025692B CN 200910171874 A CN200910171874 A CN 200910171874A CN 102025692 B CN102025692 B CN 102025692B
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harq entity
harq
timer
resets
entity
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CN200910171874.2A
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CN102025692A (en
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汪孙节
张健
黄亚达
张银成
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中兴通讯股份有限公司
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Abstract

The invention disclose a method for resetting a media access control protocol layer of a user terminal, comprising the following steps of: acquiring hybrid automatic repeat request (HARQ) entity resetting indication by using a high-layer protocol layer of the media access control (MAC) protocol layer; judging whether the HARQ entity resetting triggers MAC entity resetting or not by using the high-layer protocol layer, if so, sending a MAC entity resetting triggering instruction to an MAC protocol layer, and then executing MAC entity resetting operation by using the MAC protocol layer; and if not so, sending a HARQ entity resetting triggering instruction to the MAC protocol layer, and then executing the HARQ entity resetting operation of corresponding HARQ entities by the MAC protocol layer. The invention also discloses a system for resetting a media access control protocol layer of a user terminal, comprising a judging unit and an executing unit. The method and system in the invention can pertinently realize the resetting of one ore more HARQ entities.

Description

Media access control protocol layer repositioning method and the system of user terminal

Technical field

The present invention relates to the communications field, in particular to media access control (MAC, Media Access Control) protocol layer repositioning method and the system of user terminal (UE, User Equipment) under a kind of multicarrier environment.

Background technology

3G (Third Generation) Moblie Long Term Evolution (LTE, Long Term Evolution) in the Radio interface protocols uplink layer 2, downstream layers 2 structures of " the general land wireless access (E-UTRA; Evolved Universal Terrestrial Radio Access) of evolution " of system, at network side MAC protocol layer for certain UE at mixed automatic retransfer request (HARQ of descending support, Hybrid ARQ) entity, correspondingly, at the MAC of UE side protocol layer to there being a MAC entity, at descending/ascending HARQ entity of descending/up support.Downlink or uplink HARQ entity is safeguarded respectively transmission and the re-transmission of multiple parallel HARQ process execution transmission block (TB, Transport Block) separately.

MAC protocol layer is supported reset function, is triggered by upper-layer protocol layer, and herein, upper-layer protocol layer refers generally to Radio Resource control (RRC, Radio Resource Control) protocol layer.

In following scene, also can be referred to as under condition, RRC will trigger MAC protocol layer and reset: cell reselection occurs while operation for timer T300, timer T302, timer T303 or timer T305; Timer T300 is overtime; UE receives RRC connection refused message (RRC Connection Reject); RRC connects foundation to be ended; When switching, UE receives in RRC connection reconfiguration message (RRC ConnectionReconfiguration) and comprises mobility control information (Mobility Control Info); Or, RRC connection reconstruction process (RRC Connection Re-establishment).

Referring at LTE agreement TS 36.321 Section 5.9, MAC protocol layer reseting procedure, carry out reset operation, reset operation includes but not limited in following operation one or more: the variable Bj of the each logic channel of initialization is 0, and this variable Bj is for priority of logical channels processing procedure token bucket algorithm; Stop the timer of all operations; The time of thinking is adjusted timer (TAT, Time Alignment Timer) overtime, carry out the overtime relevant operation of TAT, specifically referring to Section 5.2 of LTE agreement TS 36.321, comprise: empty all harq buffer districts, notice RRC release physical ascending control channel (PUCCH)/probing reference signal (SRS, Sounding Reference Signal) resource, empty semi-durable descending distribution (DL assignment) and uplink authorization (UL grant) resource of all configurations; Stop all ongoing Random Access Channel (RACH) process; Abandon the random access guiding index (ra-Preamble Index) and the Random Access Channel mask index (ra-PRACH-Mask Index) that obtain by explicit signaling; Flush message 3 (Msg3) buffering area, Msg3 is for random access procedure; Cancel all dispatch request that are triggered (SR, Scheduling Request) process; Cancel all Buffer Status Report that are triggered (BSR, Buffer Status Report) process; Cancel all power headroom reporting (PHR)s that are triggered (PHR, PowerHeadroom Report) process; Empty the soft buffering area of all descending HARQ processes; For each descending HARQ process, think headed by the TB that the next one receives and pass; Discharge interim Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (Temporary C-RNTI).

In order to meet the demand of growing large bandwidth high-speed mobile access, third generation partnership project (3GPP, Third Generation Partnership Projects) release senior Long Term Evolution (LTE-A, Long-Term Evolution Advanced) standard.LTE-A adopts series of new techniques to expand frequency domain, spatial domain on LTE basis, improves the availability of frequency spectrum, increases the objects such as power system capacity to reach.Wherein carrier aggregation technology can the two or more component carriers of polymerization (CC, Component Carrier) to support wider frequency band, for example, descending support arrives 100MHz and spectrum aggregating.UE can receive simultaneously/send data on one or more component carriers, can be configured in the different numbers of descending/up gathering and have the component carrier of different bandwidth.The corresponding HARQ entity of each component carrier and transmission channel.On each component carrier, there is respectively an independent down control channel (PDCCH, Physical Downlink ControlChannel) indicate the resource on resource distribution or other component carrier on this component carrier to distribute, on PDCCH, there is 0~3bit instruction component carrier identification information.In LTE-A system, in uplink layer 2 and downstream layers 2 structures, include the HARQ entity that corresponds respectively to each component carrier at the MAC of UE entity.

The next MAC entity of prior art single carrier case comprises a HARQ entity, and in LTE-A system in multicarrier situation, each component carrier correspondence HARQ entity separately, a MAC entity comprises multiple HARQ entities.In the time there is the scene that some only have influence on indivedual component carriers, adopt the MAC protocol layer repositioning method of prior art, only cannot realize and resetting for HARQ entity corresponding to affected component carrier, will have influence on other normal component carrier because whole MAC entity is carried out to reset operation.

Summary of the invention

In view of this, main purpose of the present invention is to provide a kind of MAC protocol layer repositioning method and system of user terminal, can realize targetedly the reset of one or more HARQ entity.

For achieving the above object, technical scheme of the present invention is achieved in that

The media access control protocol layer repositioning method that the invention provides a kind of user terminal UE, the method comprises:

The upper-layer protocol layer of media access control MAC protocol layer obtains the instruction of mixed automatic retransfer request HARQ entity resets;

Upper-layer protocol layer judges whether this HARQ entity resets triggers MAC entity resets, if trigger, sends MAC entity resets triggering command to MAC protocol layer, and MAC protocol layer is carried out the operation of MAC entity resets; If do not trigger, send HARQ entity resets triggering command to MAC protocol layer, MAC protocol layer is carried out the HARQ entity resets operation of corresponding HARQ entity.

Wherein, described upper-layer protocol layer is radio resource control RRC protocol layer.

In technique scheme, described HARQ entity resets instruction is triggered by following condition:

One or more component carriers of UE are reshuffled;

One or more component carriers of UE are deactivated;

One or more component carrier generation Radio Link Failure of UE; Or

One or more component carriers of UE are deleted.

In technique scheme, described corresponding HARQ entity is HARQ entity corresponding to one or more component carriers that triggers the instruction of HARQ entity resets;

Whether the described HARQ of judgement entity resets triggers MAC entity resets is specially:

RRC protocol layer judges in the one or more component carriers that trigger the instruction of HARQ entity resets whether have main carrier or anchor carrier wave, if having, judges that HARQ entity resets triggers MAC entity resets; If no, further judge except HARQ entity corresponding to described one or more component carriers whether also have the HARQ entity not resetting, if do not exist, judge that HARQ entity resets triggers MAC entity resets, if exist, judge that HARQ entity resets does not trigger MAC entity resets.

In technique scheme, described HARQ entity resets operation includes but not limited at least one in following operation:

Stop the timer of all operations that HARQ entity is relevant;

If HARQ entity resets is last ascending HARQ entity resets and has the descending HARQ entity not resetting simultaneously, it is overtime that the time of thinking is adjusted timer TAT, carry out the overtime relevant operation of TAT, include but not limited at least one in following operation: empty harq buffer districts all on this HARQ entity, notify RRC release physical ascending control channel PUCCH/ probing reference signal SRS resource, empty semi-durable descending distribution and the uplink authorization resource of all configurations;

If HARQ physical arrangements has independently TAT, and the ascending HARQ entity that this HARQ entity is not last reset, think that TAT is overtime on the associated component carrier of this HARQ entity, carry out the overtime relevant operation of TAT, the overtime relevant operation of TAT includes but not limited at least one in following operation: empty all harq buffer districts on the component carrier that this HARQ entity is associated, notice RRC discharges PUCCH/SRS resource, empties semi-durable descending distribution and the uplink authorization resource of all configurations on the component carrier that this HARQ entity is associated;

Stop ongoing Random Access Channel RACH process on component carrier that HARQ entity is associated;

Abandon random access guiding index and Random Access Channel mask index on the component carrier that HARQ entity is associated;

Empty the message Msg3 buffering area on the component carrier that HARQ entity is associated;

If HARQ entity resets is last ascending HARQ entity resets and has the descending HARQ entity not resetting, cancels all dispatch request SR processes that are triggered and Buffer Status Report BSR process simultaneously;

The power headroom reporting (PHR) PHR process being triggered on the component carrier that cancellation HARQ entity is associated;

Empty the soft buffering area of the descending HARQ process of HARQ entity;

For the each descending HARQ process of HARQ entity, think headed by the transmission block TB that the next one receives and pass; With

Interim Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI on the component carrier that release HARQ entity is associated.

Wherein, the timer operation that stops all operations that HARQ entity is relevant described in includes but not limited at least one in following operation:

Stop the relevant timer of random access procedure on component carrier that HARQ entity is associated;

If HARQ physical arrangements has discontinuous reception DRX operation, or this HARQ entity is the descending HARQ entity of last reset and has the ascending HARQ entity not resetting simultaneously, stop the relevant timer of DRX that all these HARQ entities are associated, the timer that DRX is relevant includes but not limited at least one in following timer: DRX non-active timer, DRX retransmission timer, the short cycle timer of DRX, HARQ Loop Round Trip Time timer and duration timer;

If HARQ entity is the ascending HARQ entity of last reset and has the descending HARQ entity not resetting simultaneously, stop the timer that all BSR are relevant, the timer that BSR is relevant includes but not limited at least one in following timer: periodically BSR timer and re-transmission BSR timer; With

If HARQ physical arrangements has PHR resource, stop the relevant timer of all PHR that this HARQ entity is associated, the timer that PHR is relevant includes but not limited at least one in following timer: periodically PHR timer and forbid PHR timer.

The present invention also provides a kind of media access control protocol layer repositioning method of user terminal, comprising:

The upper-layer protocol layer of MAC protocol layer obtains the instruction of HARQ entity resets, sends HARQ entity resets triggering command to MAC protocol layer;

MAC protocol layer judges whether this HARQ entity resets triggers MAC entity resets, if trigger, carries out the operation of MAC entity resets; If do not trigger, carry out the HARQ entity resets operation of corresponding HARQ entity.

Wherein, described upper-layer protocol layer is radio resource control RRC protocol layer.

In technique scheme, described HARQ entity resets instruction is triggered by following condition:

One or more component carriers of UE are reshuffled;

One or more component carriers of UE are deactivated;

One or more component carrier generation Radio Link Failure of UE; Or

One or more component carriers of UE are deleted.

In technique scheme, described corresponding HARQ entity is HARQ entity corresponding to one or more component carriers that triggers the instruction of HARQ entity resets;

Whether the described HARQ of judgement entity resets triggers MAC entity resets is specially:

MAC protocol layer judges in the one or more component carriers that trigger the instruction of HARQ entity resets whether have main carrier or anchor carrier wave, if having, judges that HARQ entity resets triggers MAC entity resets; If no, further judge except HARQ entity corresponding to described one or more component carriers whether also have the HARQ entity not resetting, if do not exist, judge that HARQ entity resets triggers MAC entity resets, if exist, judges that HARQ entity resets does not trigger MAC entity resets.

In technique scheme, described HARQ entity resets operation includes but not limited at least one in following operation:

Stop the timer of all operations that HARQ entity is relevant;

If HARQ entity resets is last ascending HARQ entity resets and has the descending HARQ entity not resetting simultaneously, think that TAT is overtime, carry out the overtime relevant operation of TAT, include but not limited at least one in following operation: empty harq buffer districts all on this HARQ entity, notice RRC discharges PUCCH/SRS resource, empties semi-durable descending distribution and the uplink authorization resource of all configurations;

If HARQ physical arrangements has independently TAT, and the ascending HARQ entity that this HARQ entity is not last reset, think that TAT is overtime on the associated component carrier of this HARQ entity, carry out the overtime relevant operation of TAT, the overtime relevant operation of TAT includes but not limited at least one in following operation: empty all harq buffer districts on the component carrier that this HARQ entity is associated, notice RRC discharges PUCCH/SRS resource, empties semi-durable descending distribution and the uplink authorization resource of all configurations on the component carrier that this HARQ entity is associated;

Stop ongoing RACH process on component carrier that HARQ entity is associated;

Abandon random access guiding index and Random Access Channel mask index on the component carrier that HARQ entity is associated;

Empty the Msg3 buffering area on the component carrier that HARQ entity is associated;

If HARQ entity resets is last ascending HARQ entity resets and has the descending HARQ entity not resetting, cancels all SR processes that are triggered and BSR process simultaneously;

The PHR process being triggered on the component carrier that cancellation HARQ entity is associated;

Empty the soft buffering area of the descending HARQ process of HARQ entity;

For the each descending HARQ process of HARQ entity, think headed by the TB that the next one receives and pass; With

Interim C-RNTI on the component carrier that release HARQ entity is associated.

Wherein, the timer operation that stops all operations that this HARQ entity is relevant described in includes but not limited at least one in following operation:

Stop the relevant timer of random access procedure on component carrier that HARQ entity is associated;

If HARQ physical arrangements has DRX operation, or this HARQ entity is the descending HARQ entity of last reset and has the ascending HARQ entity not resetting simultaneously, stop the relevant timer of DRX that all these HARQ entities are associated, the timer that DRX is relevant includes but not limited at least one in following timer: DRX non-active timer, DRX retransmission timer, the short cycle timer of DRX, HARQ Loop Round Trip Time timer and duration timer;

If HARQ entity is the ascending HARQ entity of last reset and has the descending HARQ entity not resetting simultaneously, stop the timer that all BSR are relevant, the timer that BSR is relevant includes but not limited at least one in following timer: periodically BSR timer and re-transmission BSR timer; With

If HARQ physical arrangements has PHR resource, stop the relevant timer of all PHR that this HARQ entity is associated, the timer that PHR is relevant includes but not limited at least one in following timer: periodically PHR timer and forbid PHR timer.

The present invention also provides a kind of media access control protocol layer resetting system of user terminal, and this system comprises: judging unit and performance element; Concrete:

Judging unit, for judging whether HARQ entity resets triggers MAC entity resets, in the time triggering, sends MAC entity resets operational order to performance element, in the time not triggering, sends HARQ entity resets operational order to performance element;

Performance element, for carrying out the HARQ entity resets operation of the operation of MAC entity resets or corresponding HARQ entity according to the instruction of judging unit.

MAC protocol layer repositioning method and the system of user terminal of the present invention, upper-layer protocol layer by MAC protocol layer is indicated trigger condition according to different resets, send MAC entity resets triggering command or HARQ entity resets triggering command to MAC protocol layer, MAC protocol layer is carried out corresponding MAC entity resets operation or the operation of HARQ entity resets.In the time there is the scene that some only have influence on indivedual component carriers, can realize targetedly the reset of one or more HARQ entity, avoid having influence on other normal component carrier because whole MAC entity is carried out to reset operation.

Brief description of the drawings

Fig. 1 is the schematic flow sheet of the MAC protocol layer repositioning method one of user terminal of the present invention;

Fig. 2 is the schematic flow sheet of the MAC protocol layer repositioning method two of user terminal of the present invention.

Embodiment

Basic thought of the present invention is: the upper-layer protocol layer by MAC protocol layer is indicated trigger condition according to different resets, send MAC entity resets triggering command or HARQ entity resets triggering command to MAC protocol layer, MAC protocol layer is carried out corresponding MAC entity resets operation or the operation of HARQ entity resets.In the time there is the scene that some only have influence on indivedual component carriers, can realize targetedly the reset of one or more HARQ entity.

The present invention is intended to propose MAC reset schemes in multicarrier situation.Owing to only relating to the reset to one or more component carriers in some scene, do not need whole MAC entity to carry out reset operation.In the present invention, component carrier and HARQ entity are corresponding one by one, and the meaning that uses component carrier or HARQ entity representative in description is seen and can be thought and be equal to from the angle of MAC protocol layer.In description " last descending HARQ entity resets " refer to for other descending HARQ entity in descending HARQ entity all resetted or this descending HARQ entity corresponding to current unique activated downlink component carrier; " last ascending HARQ entity resets " refer to for other ascending HARQ entity in ascending HARQ entity all resetted or this ascending HARQ entity corresponding to current unique activated upstream components carrier wave; " last or several HARQ entity resets " refers to that HARQ entity that these one or more component carriers are corresponding is only HARQ entity not resetting, and all other descending and ascending HARQ entities all reset.

The invention provides a kind of MAC protocol layer repositioning method of user terminal, the schematic flow sheet of the MAC protocol layer repositioning method one that Fig. 1 is user terminal of the present invention, as shown in Figure 1, the inventive method comprises:

The upper-layer protocol layer of step 1, MAC protocol layer obtains the instruction of HARQ entity resets;

In this step, upper-layer protocol layer is RRC protocol layer;

Above-mentioned HARQ entity resets instruction is triggered by following condition:

One or more component carriers of UE are reshuffled;

One or more component carriers of UE are deactivated;

One or more component carrier generation Radio Link Failure of UE; Or

One or more component carriers of UE are deleted.

Step 2, upper-layer protocol layer judge whether this HARQ entity resets triggers MAC entity resets, if trigger, and execution step 3; If do not trigger, perform step 4;

In this step, have main carrier or anchor carrier wave if trigger in one or more component carriers of HARQ entity resets instruction, or this HARQ entity resets be last or several HARQ entity resets, upper-layer protocol layer is judged triggering MAC entity resets;

Concrete:

Upper-layer protocol layer judges in the one or more component carriers that trigger the instruction of HARQ entity resets whether have main carrier or anchor carrier wave, if having, judges that HARQ entity resets triggers MAC entity resets; If no, further judge except HARQ entity corresponding to described one or more component carriers whether also have the HARQ entity not resetting, if do not exist, judge that HARQ entity resets triggers MAC entity resets, if exist, judges that HARQ entity resets does not trigger MAC entity resets.

Step 3, upper-layer protocol layer send MAC entity resets triggering command to MAC protocol layer, and MAC protocol layer is carried out the operation of MAC entity resets, and this MAC protocol layer reset flow process finishes.

Step 4, upper-layer protocol layer send HARQ entity resets triggering command to MAC protocol layer, and MAC protocol layer is carried out the HARQ entity resets operation of corresponding HARQ entity;

In this step, corresponding HARQ entity is the HARQ entity that triggers the instruction of HARQ entity resets, triggers the HARQ entity corresponding to one or more component carriers of HARQ entity resets instruction.

Illustrate the related flow process of MAC protocol layer reseting procedure below.

The MAC entity of UE is divided into the public part of MAC and the specific HARQ entity part of component carrier.In multicarrier system, the corresponding HARQ entity of each component carrier, a MAC entity comprises multiple HARQ entities.And in the time there is the scene that some only have influence on indivedual component carriers, how to realize and only HARQ entity corresponding to affected component carrier being resetted, be the problem to be solved in the present invention, therefore the present invention has introduced the concept of HARQ entity resets.Correspondingly, the MAC protocol layer relevant process that resets comprises MAC entity resets and HARQ entity resets.

MAC entity resets process comprises the public partial reset of MAC and all HARQ entity resets.

HARQ entity resets refer to certain descending/upstream components carrier wave corresponding descending/ascending HARQ entity resets; Wherein, if the corresponding HARQ entity resets of main carrier or anchor carrier wave triggers MAC entity resets; If there is not other HARQ entity not resetting, trigger MAC entity resets; If also there is other HARQ entity not resetting, current HARQ entity resets does not trigger MAC entity resets.Above-mentioned anchor carrier wave is by: UE is at the resident carrier wave of idle (IDLE) state or the carrier wave of initiating random access; Or UE is connected (RRC_CONNECTED) state and obtains and the carrier wave of Network Synchronization and system message with RRC at IDLE; Or the main carrier under RRC connection status, this main carrier can determine the behavior of other carrier wave.

The MAC protocol layer of the present invention relevant process that resets also can further comprise: the public partial reset of MAC.The public partial reset of MAC refers to the reset of the common parameter that MAC protocol layer relates to, and for example priority of logical channels is processed relevant parameter reconfiguration.The upper-layer protocol layer of eNB judges according to setting in advance whether the public partial reset of MAC triggers MAC entity resets.If the public partial reset of MAC triggers MAC entity resets, MAC protocol layer is carried out the operation of MAC entity resets.Certainly, the public partial reset of MAC also can not trigger MAC entity resets, and now, MAC protocol layer is carried out following reset operation: the variable Bj of the each logic channel of initialization is 0.This non-emphasis of the present invention, does not repeat them here.

Introduce respectively the scene that triggers MAC entity resets and HARQ entity resets below,, under following MAC/HARQ entity resets scene, rrc layer will be received the instruction of MAC/HARQ entity resets.

First, the scene that triggers MAC entity resets is described, includes but not limited at least one in following scene:

While operation, there is cell reselection in timer T300, timer T302, timer T303 or timer T305;

Timer T300 is overtime;

UE receives RRC connection refused message;

When RRC connects foundation termination, switching, UE receives in RRC connection reconfiguration message and comprises mobility control information;

RRC connection reconstruction process, comprises handoff procedure;

Main carrier generation RRC connection is set up and is unsuccessfully returned to idle condition;

The current all component carrier reprovisions of UE are set to other component carrier;

The main carrier generation Radio Link Failure of UE; With

All HARQ entity resets.

, then the scene that triggers HARQ entity resets is described below, includes but not limited at least one in following scene:

One or more component carriers of UE are reshuffled, and for example UE uses two component carrier CC1 and CC2, and reprovision is set to and uses CC1 and CC3;

One or more component carriers of UE are deactivated;

One or more component carrier generation Radio Link Failure of UE; With

One or more component carriers of UE are deleted.

Further illustrate the reset operation that MAC entity resets and HARQ entity resets are carried out below:

The operation of MAC entity resets includes but not limited at least one in following operation:

1) the variable Bj of the each logic channel of initialization is 0;

2) stop the timer that moves on all HARQ entities, i.e. relevant described timer on each activated component carrier; Particularly, include but not limited at least one in following operation:

Stop the timer that random access procedure is relevant; For example, MAC competition solves timer (mac-Contention Resolution Timer);

Stop the relevant timer of all discontinuous receptions (DRX), include but not limited at least one in following timer: DRX non-active timer (drx-Inactivity Timer), DRX retransmission timer (drx-Retransmission Timer), the short cycle timer of DRX (drx Short Cycle Timer), HARQ Loop Round Trip Time timer (HARQ RTT Timer) and duration timer (on Duration Timer);

Stop the timer that all BSR are relevant, include but not limited at least one in following timer: periodically BSR timer (periodic BSR-Timer), re-transmission BSR timer (retx BSR-Timer);

Stop the timer that all PHR are relevant, include but not limited at least one in following timer: periodically PHR timer (periodic PHR-Timer), forbid PHR timer (prohibit PHR-Timer);

3) think that TAT is overtime, carry out the overtime relevant operation of TAT, include but not limited at least one in following operation: empty all harq buffer districts, notice RRC discharges PUCCH/SRS resource, empties semi-durable descending distribution and the uplink authorization resource of all configurations; Above-mentioned " owning " comprises the described relevant information that each HARQ entity is relevant; Safeguard different TAT if UE is different component carrier, think that all TAT are all overtime;

4) stop all ongoing random accesses (RACH) process; Comprise ongoing described RACH process on all component carriers;

5) abandon the random access guiding index and the Random Access Channel mask index that obtain by explicit signaling; Comprise all described information on all component carriers;

6) empty the Msg3 buffering area on all component carriers;

7) cancel all SR that are triggered on all component carriers;

8) cancel the BSR being triggered on all component carriers;

9) cancel the PHR being triggered on all component carriers;

10) empty the soft buffering area of the descending HARQ process on all component carriers;

11), for the described each descending HARQ process on all component carriers, think headed by the TB that the next one receives and pass; With

12) discharge the interim C-RNTI on all component carriers.

The operation of HARQ entity resets includes but not limited at least one in following operation, and ascending HARQ entity or the support of descending HARQ entity reset or difference reset operation simultaneously:

1) stop the timer of all operations that this HARQ entity is relevant; Particularly, include but not limited at least one operation in following process:

Stop the relevant timer MAC competition of random access procedure on component carrier that this HARQ entity is associated and solve timer;

If this HARQ physical arrangements has DRX operation, or this HARQ entity is the descending HARQ entity of last reset and has the ascending HARQ entity not resetting simultaneously, stop the relevant timer of DRX that all HARQ entities are associated, include but not limited at least one in following timer: DRX non-active timer, DRX retransmission timer, the short cycle timer of DRX, HARQ Loop Round Trip Time timer and duration timer;

If the ascending HARQ entity that this HARQ entity is last reset and the descending HARQ entity that existence does not reset simultaneously, stop the timer that all BSR are relevant, the timer that BSR is relevant includes but not limited at least one in following timer: periodically BSR timer and re-transmission BSR timer;

If this HARQ physical arrangements has PHR resource, stop the relevant timer of all PHR that this HARQ entity is associated, include but not limited at least one in following timer: periodically PHR timer and forbid PHR timer;

2) if this HARQ entity resets is last ascending HARQ entity resets and the not descending HARQ entity of reset of existence simultaneously, think that TAT is overtime, carry out the overtime relevant operation of TAT, include but not limited at least one in following operation: empty harq buffer districts all on this HARQ entity, notice RRC discharges PUCCH/SRS resource, empties semi-durable descending distribution and the uplink authorization resource of all configurations; Above-mentioned " owning " comprises the described relevant information that each HARQ entity is relevant;

3) if this HARQ physical arrangements has independently TAT; And not the ascending HARQ entity of last reset, think that TAT is overtime on the associated component carrier of this HARQ entity, carry out the overtime relevant operation of TAT, include but not limited at least one in following operation: empty all harq buffer districts on the component carrier that this HARQ entity is associated, notice RRC discharges PUCCH/SRS resource, empties semi-durable descending distribution and the uplink authorization resource of all configurations on the component carrier that this HARQ entity is associated;

4) stop all ongoing RACH processes on component carrier that this HARQ entity is associated;

5) abandon random access guiding index and the Random Access Channel mask index on the component carrier that this HARQ entity of obtaining by explicit signaling is associated;

6) empty the Msg3 buffering area on the component carrier that this HARQ entity is associated;

7) if this HARQ entity resets is last ascending HARQ entity resets and the not descending HARQ entity of reset of existence simultaneously, cancel all SR processes that are triggered and BSR process;

8) cancel all PHR processes that are triggered on the component carrier that this HARQ entity is associated;

9) empty the soft buffering area of all descending HARQ process of this HARQ entity;

10), for the each descending HARQ process of this HARQ entity, think headed by the TB that the next one receives and pass; With

11) discharge the interim C-RNTI on the component carrier that this HARQ entity is associated.

Further illustrate MAC protocol layer repositioning method of the present invention below in conjunction with specific embodiment.

Embodiment 1

In the present embodiment, the one-component carrier wave of UE is deleted, and this component carrier is neither main carrier or anchor carrier wave, the HARQ entity that its corresponding HARQ entity resets neither last reset.

RRC protocol layer is received after this HARQ entity resets instruction, judges that this HARQ entity resets can not trigger MAC entity resets, sends HARQ entity resets triggering command to MAC protocol layer.

MAC protocol layer is carried out the HARQ entity resets operation of this HARQ entity, includes but not limited to one or more in following operation:

Stop the timer of all operations on this HARQ entity;

If last ascending HARQ entity resets and the ascending HARQ entity that existence does not reset, think that TAT is overtime simultaneously, carry out the overtime relevant operation of TAT;

If dispose independently TAT on this component carrier, think that the TAT on this component carrier is overtime, carry out the overtime associative operation of TAT, only relate to the HARQ physical operation that this component carrier is corresponding;

If ascending HARQ entity resets, stops ongoing RACH process on this component carrier;

If ascending HARQ entity resets, abandons random access guiding index and Random Access Channel mask index on this component carrier;

If ascending HARQ entity resets, empties the buffering area of Msg3 on this HARQ entity;

If ascending HARQ entity resets, cancels the PHR being triggered on this HARQ entity;

If descending HARQ entity resets, empties the soft buffering area of all HARQ processes on the descending HARQ entity of this component carrier;

If descending HARQ entity resets, for all HARQ processes on the descending HARQ entity of this component carrier, thinks headed by the TB that the next one receives and passes; With

Discharge the interim C-RNTI on this component carrier.

Embodiment 2

In the present embodiment, the one-component carrier wave generation Radio Link Failure of UE, this component carrier is main carrier.

RRC protocol layer is received after this HARQ entity resets instruction, judges that this HARQ entity resets triggers MAC entity resets, sends MAC entity resets triggering command to MAC protocol layer.

MAC protocol layer is carried out the operation of MAC entity resets, includes but not limited to one or more in following operation:

The variable Bj of the each logic channel of initialization is 0;

Stop the timer of all operations; Think that TAT is overtime, carry out the overtime relevant operation of TAT, relate to all HARQ physical operation;

Stop all ongoing RACH processes;

Abandon all random access guiding indexes and Random Access Channel mask index;

Empty the buffering area of Msg3 on all HARQ entities;

Cancel SR process and the BSR process of all triggerings;

Cancel the PHR being triggered on all HARQ entities;

Empty the soft buffering area of all HARQ processes on the descending HARQ entity of all component carriers;

For all HARQ processes on the descending HARQ entity of all component carriers, think headed by the TB that the next one receives and pass; With

Discharge the interim C-RNTI on all component carriers.

The MAC protocol layer repositioning method of user terminal of the present invention can also adopt following scheme to realize, the schematic flow sheet of the MAC protocol layer repositioning method two that Fig. 2 is user terminal of the present invention, and as shown in Figure 2, the inventive method comprises:

The upper-layer protocol layer of step 10, MAC protocol layer obtains the instruction of HARQ entity resets, sends HARQ entity resets triggering command to MAC protocol layer;

In this step, upper-layer protocol layer is RRC protocol layer;

Above-mentioned HARQ entity resets instruction is triggered by following condition:

One or more component carriers of UE are reshuffled;

One or more component carriers of UE are deactivated;

One or more component carrier generation Radio Link Failure of UE; Or

One or more component carriers of UE are deleted.

Step 20, MAC protocol layer judge that whether this HARQ entity resets triggers MAC entity resets, if so, performs step 30; If not, perform step 40;

In this step, MAC protocol layer judges in the one or more component carriers that trigger the instruction of HARQ entity resets whether have main carrier or anchor carrier wave, if having, judges that HARQ entity resets triggers MAC entity resets; If no, further judge except HARQ entity corresponding to described one or more component carriers whether also have the HARQ entity not resetting, if do not exist, judge that HARQ entity resets triggers MAC entity resets, if exist, judges that HARQ entity resets does not trigger MAC entity resets.

Step 30, MAC protocol layer are carried out the operation of MAC entity resets, and this MAC protocol layer reset flow process finishes.

Step 40, MAC protocol layer are carried out the HARQ entity resets operation of corresponding HARQ entity;

In this step, corresponding HARQ entity is HARQ entity corresponding to one or more component carriers that triggers the instruction of HARQ entity resets.

All the other schemes of the MAC protocol layer repositioning method two of this user terminal, as identical with the scheme of said method one in the operation of MAC entity resets, the operation of HARQ entity resets etc., do not repeat them here.

The present invention also provides a kind of system that realizes above-mentioned MAC protocol layer repositioning method, and this system comprises: judging unit and performance element; Concrete:

Judging unit, for judging whether this HARQ entity resets triggers MAC entity resets, in the time triggering, sends MAC entity resets operational order to performance element, in the time not triggering, sends HARQ entity resets operational order to performance element;

Performance element, for carrying out the HARQ entity resets operation of the operation of MAC entity resets or corresponding HARQ entity according to the instruction of judging unit.

The present invention proposes MAC reset schemes in multicarrier situation.MAC is resetted and is divided into three kinds of situations of the public partial reset of MAC entity resets, HARQ entity resets and MAC, carry out different reset operations according to concrete scene again, can avoid certain component carrier HARQ entity resets to have influence on the normal operation of HARQ entity on other component carrier.

The above, be only preferred embodiment of the present invention, is not intended to limit protection scope of the present invention.

Claims (13)

1. a media access control protocol layer repositioning method of user terminal UE, is characterized in that, comprising:
The upper-layer protocol layer of media access control MAC protocol layer obtains the instruction of mixed automatic retransfer request HARQ entity resets;
Upper-layer protocol layer judges whether this HARQ entity resets triggers MAC entity resets, if trigger, sends MAC entity resets triggering command to MAC protocol layer, and MAC protocol layer is carried out the operation of MAC entity resets; If do not trigger, send HARQ entity resets triggering command to MAC protocol layer, MAC protocol layer is carried out the HARQ entity resets operation of corresponding HARQ entity.
2. the media access control protocol layer repositioning method of user terminal according to claim 1, is characterized in that, described upper-layer protocol layer is radio resource control RRC protocol layer.
3. the media access control protocol layer repositioning method of user terminal according to claim 2, is characterized in that, described HARQ entity resets instruction is triggered by following condition:
One or more component carriers of UE are reshuffled;
One or more component carriers of UE are deactivated;
One or more component carrier generation Radio Link Failure of UE; Or
One or more component carriers of UE are deleted.
4. the media access control protocol layer repositioning method of user terminal according to claim 3, is characterized in that, described corresponding HARQ entity is HARQ entity corresponding to one or more component carriers that triggers the instruction of HARQ entity resets;
Whether the described HARQ of judgement entity resets triggers MAC entity resets is specially:
RRC protocol layer judges in the one or more component carriers that trigger the instruction of HARQ entity resets whether have main carrier or anchor carrier wave, if having, judges that HARQ entity resets triggers MAC entity resets; If no, further judge except HARQ entity corresponding to described one or more component carriers whether also have the HARQ entity not resetting, if do not exist, judge that HARQ entity resets triggers MAC entity resets, if exist, judge that HARQ entity resets does not trigger MAC entity resets.
5. the media access control protocol layer repositioning method of user terminal according to claim 4, is characterized in that, described HARQ entity resets operation includes but not limited at least one in following operation:
Stop the timer of all operations that HARQ entity is relevant;
If HARQ entity resets is last ascending HARQ entity resets and has the descending HARQ entity not resetting simultaneously, it is overtime that the time of thinking is adjusted timer TAT, carry out the overtime relevant operation of TAT, include but not limited at least one in following operation: empty harq buffer districts all on this HARQ entity, notify RRC release physical ascending control channel PUCCH/ probing reference signal SRS resource, empty semi-durable descending distribution and the uplink authorization resource of all configurations;
If HARQ physical arrangements has independently TAT, and the ascending HARQ entity that this HARQ entity is not last reset, think that TAT is overtime on the associated component carrier of this HARQ entity, carry out the overtime relevant operation of TAT, the overtime relevant operation of TAT includes but not limited at least one in following operation: empty all harq buffer districts on the component carrier that this HARQ entity is associated, notice RRC discharges PUCCH/SRS resource, empties semi-durable descending distribution and the uplink authorization resource of all configurations on the component carrier that this HARQ entity is associated;
Stop ongoing Random Access Channel RACH process on component carrier that HARQ entity is associated;
Abandon random access guiding index and Random Access Channel mask index on the component carrier that HARQ entity is associated;
Empty the message Msg3 buffering area on the component carrier that HARQ entity is associated;
If HARQ entity resets is last ascending HARQ entity resets and has the descending HARQ entity not resetting, cancels all dispatch request SR processes that are triggered and Buffer Status Report BSR process simultaneously;
The power headroom reporting (PHR) PHR process being triggered on the component carrier that cancellation HARQ entity is associated;
Empty the soft buffering area of the descending HARQ process of HARQ entity;
For the each descending HARQ process of HARQ entity, think headed by the transmission block TB that the next one receives and pass; With
Interim Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI on the component carrier that release HARQ entity is associated.
6. the media access control protocol layer repositioning method of user terminal according to claim 5, is characterized in that, described in stop all operations that HARQ entity is relevant timer operation include but not limited at least one in following operation:
Stop the relevant timer of random access procedure on component carrier that HARQ entity is associated;
If HARQ physical arrangements has discontinuous reception DRX operation, or this HARQ entity is the descending HARQ entity of last reset and has the ascending HARQ entity not resetting simultaneously, stop the relevant timer of DRX that all these HARQ entities are associated, the timer that DRX is relevant includes but not limited at least one in following timer: DRX non-active timer, DRX retransmission timer, the short cycle timer of DRX, HARQ Loop Round Trip Time timer and duration timer;
If HARQ entity is the ascending HARQ entity of last reset and has the descending HARQ entity not resetting simultaneously, stop the timer that all BSR are relevant, the timer that BSR is relevant includes but not limited at least one in following timer: periodically BSR timer and re-transmission BSR timer; With
If HARQ physical arrangements has PHR resource, stop the relevant timer of all PHR that this HARQ entity is associated, the timer that PHR is relevant includes but not limited at least one in following timer: periodically PHR timer and forbid PHR timer.
7. a media access control protocol layer repositioning method for user terminal, is characterized in that, comprising:
The upper-layer protocol layer of MAC protocol layer obtains the instruction of HARQ entity resets, sends HARQ entity resets triggering command to MAC protocol layer;
MAC protocol layer judges whether this HARQ entity resets triggers MAC entity resets, if trigger, carries out the operation of MAC entity resets; If do not trigger, carry out the HARQ entity resets operation of corresponding HARQ entity.
8. the media access control protocol layer repositioning method of user terminal according to claim 7, is characterized in that, described upper-layer protocol layer is radio resource control RRC protocol layer.
9. the media access control protocol layer repositioning method of user terminal according to claim 8, is characterized in that, described HARQ entity resets instruction is triggered by following condition:
One or more component carriers of UE are reshuffled;
One or more component carriers of UE are deactivated;
One or more component carrier generation Radio Link Failure of UE; Or
One or more component carriers of UE are deleted.
10. the media access control protocol layer repositioning method of user terminal according to claim 9, is characterized in that, described corresponding HARQ entity is HARQ entity corresponding to one or more component carriers that triggers the instruction of HARQ entity resets;
Whether the described HARQ of judgement entity resets triggers MAC entity resets is specially:
MAC protocol layer judges in the one or more component carriers that trigger the instruction of HARQ entity resets whether have main carrier or anchor carrier wave, if having, judges that HARQ entity resets triggers MAC entity resets; If no, further judge except HARQ entity corresponding to described one or more component carriers whether also have the HARQ entity not resetting, if do not exist, judge that HARQ entity resets triggers MAC entity resets, if exist, judges that HARQ entity resets does not trigger MAC entity resets.
The media access control protocol layer repositioning method of 11. user terminals according to claim 10, is characterized in that, described HARQ entity resets operation includes but not limited at least one in following operation:
Stop the timer of all operations that HARQ entity is relevant;
If HARQ entity resets is last ascending HARQ entity resets and has the descending HARQ entity not resetting simultaneously, think that TAT is overtime, carry out the overtime relevant operation of TAT, include but not limited at least one in following operation: empty harq buffer districts all on this HARQ entity, notice RRC discharges PUCCH/SRS resource, empties semi-durable descending distribution and the uplink authorization resource of all configurations;
If HARQ physical arrangements has independently TAT, and the ascending HARQ entity that this HARQ entity is not last reset, think that TAT is overtime on the associated component carrier of this HARQ entity, carry out the overtime relevant operation of TAT, the overtime relevant operation of TAT includes but not limited at least one in following operation: empty all harq buffer districts on the component carrier that this HARQ entity is associated, notice RRC discharges PUCCH/SRS resource, empties semi-durable descending distribution and the uplink authorization resource of all configurations on the component carrier that this HARQ entity is associated;
Stop ongoing RACH process on component carrier that HARQ entity is associated;
Abandon random access guiding index and Random Access Channel mask index on the component carrier that HARQ entity is associated;
Empty the Msg3 buffering area on the component carrier that HARQ entity is associated;
If HARQ entity resets is last ascending HARQ entity resets and has the descending HARQ entity not resetting, cancels all SR processes that are triggered and BSR process simultaneously;
The PHR process being triggered on the component carrier that cancellation HARQ entity is associated;
Empty the soft buffering area of the descending HARQ process of HARQ entity;
For the each descending HARQ process of HARQ entity, think headed by the TB that the next one receives and pass; With
Interim C-RNTI on the component carrier that release HARQ entity is associated.
The media access control protocol layer repositioning method of 12. user terminals according to claim 11, is characterized in that, described in stop all operations that this HARQ entity is relevant timer operation include but not limited at least one in following operation:
Stop the relevant timer of random access procedure on component carrier that HARQ entity is associated;
If HARQ physical arrangements has DRX operation, or this HARQ entity is the descending HARQ entity of last reset and has the ascending HARQ entity not resetting simultaneously, stop the relevant timer of DRX that all these HARQ entities are associated, the timer that DRX is relevant includes but not limited at least one in following timer: DRX non-active timer, DRX retransmission timer, the short cycle timer of DRX, HARQ Loop Round Trip Time timer and duration timer;
If HARQ entity is the ascending HARQ entity of last reset and has the descending HARQ entity not resetting simultaneously, stop the timer that all BSR are relevant, the timer that BSR is relevant includes but not limited at least one in following timer: periodically BSR timer and re-transmission BSR timer; With
If HARQ physical arrangements has PHR resource, stop the relevant timer of all PHR that this HARQ entity is associated, the timer that PHR is relevant includes but not limited at least one in following timer: periodically PHR timer and forbid PHR timer.
The media access control protocol layer resetting system of 13. 1 kinds of user terminals, is characterized in that, this system comprises: judging unit and performance element; Concrete:
Judging unit, for judging whether HARQ entity resets triggers MAC entity resets, in the time triggering, sends MAC entity resets operational order to performance element, in the time not triggering, sends HARQ entity resets operational order to performance element;
Performance element, for carrying out the HARQ entity resets operation of the operation of MAC entity resets or corresponding HARQ entity according to the instruction of judging unit.
CN200910171874.2A 2009-09-16 2009-09-16 Method and system for resetting media access control protocol layer of user terminal CN102025692B (en)

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CN101132260A (en) * 2006-08-22 2008-02-27 中兴通讯股份有限公司 Retransmission control method for reinforcing uplink asynchronous mixed automatic retransmission request
CN101292556A (en) * 2005-08-16 2008-10-22 松下电器产业株式会社 Method and apparatus for reconfiguring the MAC layer in a mobile communication system

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