CN101605024B - Mixed automatic retransmission requesting method - Google Patents
Mixed automatic retransmission requesting method Download PDFInfo
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- CN101605024B CN101605024B CN 200810110193 CN200810110193A CN101605024B CN 101605024 B CN101605024 B CN 101605024B CN 200810110193 CN200810110193 CN 200810110193 CN 200810110193 A CN200810110193 A CN 200810110193A CN 101605024 B CN101605024 B CN 101605024B
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Abstract
The invention provides a mixed automatic retransmission requesting method, which aims to use uplink semi-persistent dispatch in a TTI cluster and distribute a predefined resource for the uplink semi-persistent dispatch. The method comprises the following steps: UE sends a corresponding redundancy edition through using the predefined resource by a first sub-frame in the TTI cluster; and the UE respectively sends the redundancy editions corresponding to each other by the other sub-frames in the TTI cluster. The invention realizes the uplink semi-persistent dispatch for the TTI cluster scheme.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of mixed automatic retransmission request method.
Background technology
3G (Third Generation) Moblie Long Term Evolution (Long Term Evolution, referred to as LTE) therefore Radio interface protocols uplink layer 2 structures of " universal land radio access web of evolution (the Evolved Universal TerrestrialRadio Access Network; referred to as E-UTRAN; (eNB) forms by the base station, also can be called the base station) " of system are as shown in Figure 2.At media access control (Media Access Control, referred to as MAC) protocol layer, there is scheduling/processed (Scheduling/Priority handling) functional entity, wherein, scheduling feature is supported dynamic dispatching (Dynamic scheduling) and semi-persistent scheduling (or being called semi-persistent scheduling) (Semi-persistent Scheduling); The processed function is supported the processed of same subscriber equipment (User Equipment is referred to as UE) Different Logic interchannel, also supports to carry out processed between the different UEs by dynamic dispatching.
Up dynamic dispatching function refers to, up, E-UTRAN can be by residential quarter-Radio Network Temporary Identifier (the Cell Radio NetworkTemporary Identifier on 1/ layer of 2 (L1/L2) control channel of layer, referred to as C-RNTI) at each Transmission Time Interval (TransmitTime Interval, referred to as TTI, corresponding to a subframe (subframe)) to the UE Resources allocation, for example, Physical Resource Block (Physical Resource Block, referred to as PRB) and Modulation and Coding Scheme (Modulation and Coding Scheme is referred to as MCS).When allowing to carry out descending reception ((DRX) controlled by discontinuous reception functionality), UE is 1/ layer of 2 control channel of supervisory layers always, thereby be that possible resource distribution is found in up transmission.Here, 1/ layer of 2 control channel of layer refers to Physical Downlink Control Channel (Physical DownlinkControl Channel, referred to as PDCCH), this channel mainly is to carry uplink scheduling authorization (UL Grant) when being used for uplink scheduling, and main contents comprise the information such as Resource Block RB assignment information, Modulation and Coding Scheme (MCS), HARQ information, transmission power control TPC information, Radio Network Temporary Identifier RNTI/ cyclic redundancy check (CRC).When uplink scheduling, UE is by Physical Uplink Control Channel (Physical Uplink Control Channel, referred to as PUCCH) carry dispatch request (SR) and channel quality indication (Channel QualityIndicator, referred to as CQI), the upper transmission of the capable physically shared channel (PhysicalUplink Shared Channel is referred to as PUSCH) of upstream data.SR also can pass through Random Access Channel (RACH) and send, and CQI also can send by PUSCH.E-UTRAN by physical hybrid automatic repeat request indicator channel (Physical Hybrid ARQIndicator Channel is referred to as PHICH) for the affirmation of the up transmission feedback mixed automatic retransfer request of UE/non-affirmation response message ACK/NACK.
Up semi-persistent scheduling refers to, E-UTRAN can be first mixed automatic retransfer request (the Hybrid ARQ of UE, referred to as HARQ) send and distribute predefined ascending resource, such as opportunity (Timing), resource, transformat (Transport format) parameter etc.During UE is by the subframe of pre-allocation resource (Subframe), if UE does not find its residential quarter-Radio Network Temporary Identifier (Cell Radio NetworkTemporary Identifier at the L1/L2 control channel, referred to as C-RNTI), then UE carries out up transmission at corresponding TTI according to the predefine resource.Network based predefined Modulation and Coding Scheme (MCS) is decoded to predefined Physical Resource Block (PRB).In addition, during UE is by the subframe of pre-allocation resource, if UE has found its C-RNTI at the L1/L2 control channel, then UE carries out up transmission at corresponding TTI according to the indicated information of L1/L2 control channel, that is to say that the distribution of L1/L2 control channel substitutes the predefine of (Override) corresponding TTI and distributes, namely, at corresponding TTI, dynamic dispatching may cover semi-persistent scheduling.
Generally speaking, HARQ retransmits and uses the dynamic dispatching mode, also may use the semi-persistent scheduling mode.Typically, semi-persistent scheduling is applied to the VoIP business.Semi-persistent scheduling carries out initial configuration by Radio Resource control (RRC) signaling, for example distributes the cycle (Periodicity) of semi-persistent scheduling.The activation of semi-persistent scheduling (Activation) is controlled by PDCCH, PDCCH is semi-durable or dynamic by certain mechanism indication uplink authorization (UL Grant), for example PDCCH indicates by special C-RNTI, this special C-RNTI during from dynamic dispatching employed C-RNTI different.After subscriber equipment has been assigned with predefined semipersistent resource, generally do not need to send dispatch request (SR) by PUCCH again.HARQ re-transmission for dynamic dispatching or semi-persistent scheduling all can use adaptive retransmission mode or non-self-adapting to retransmit mode.Adaptive retransmission refers to that HARQ retransmits according to information such as the indicated resource of the upper control signal of PDCCH, MCS to carry out; Non-self-adapting retransmits and refers to that HARQ retransmits the information such as the employed resource of the last HARQ transmission of basis (can pass for HARQ is first or the HARQ re-transmission), MCS and carries out, and namely uses the information such as identical resource, MCS with last HARQ transmission.Non-self-adapting retransmits and can only trigger according to the NACK feedback, for example retransmits for ascending HARQ, if UE detects NACK and do not monitor PDCCH at PHICH, then can carry out non-self-adapting and retransmit.
At cell edge, because uplink budget is low, in a TTI, possibly can't finish the transmission of whole VoIP packet.Can by at wireless chain control layer (RLC:Radio Link Control) the VoIP packet being carried out segmentation, in a plurality of TTI, send respectively these segmentations.But will increase layer 2 header overhead, the transmission of each segmentation need to send uplink authorization (Grant) and significantly increase the consumption of PDCCH resource at PDCCH.Each first biography or re-transmission all need to be carried out acknowledge message/non-acknowledge message (ACK/NACK) feedback and increase wrong probability at physical hybrid automatic repeat request indicator channel (PHICH:Physical Hybrid ARQ Indicator CHannel).For addressing the above problem, can use the limited problem of the transmission time interval (tti) bundle up covering of (TTI bundling) solution in the LTE system.The below is professional as the example explanation take ip voice (VoIP:Voice over Internet Protocol).Up TTI bunching scheme allows to use the different redundancy versions (RedundancyVersion of one group of continuous subframe transmission block of transmission (TB:Transport Block), referred to as RV), the feedback that before the HARQ of TTI boundling inside re-transmission does not need to wait for, once sends.Single TTI boundling uses same HARQ process, only needs single uplink authorization and single feedback, namely can distribute the information such as the required resource of each subframe in the whole TTI boundling, MCS by the single uplink authorization.The TTI bunching scheme can carry out On/Off for UE by high-level signaling, and after the unlatching, then relevant upstream data sends and uses the TTI bunching scheme.The number of the employed continuous subframes of TTI boundling can be fixed, or is configured with open command by the RRC signaling.Use the TTI bunching scheme on HARQ RTT (Loop Round Trip Time: Round Trip Time) and the timing relationship that retransmits of HARQ feedback, HARQ can bring certain impact, (third generation partner plan: the scheme of 3rdGeneration Partnership Project) adopting is: ACK/NACK feedback opportunity of TTI boundling is based on the position of last subframe of TTI boundling for 3GPP at present.
This scheme is applicable to FDD (Frequency divided duplex) and two kinds of patterns of TDD (Time divided duplex).For fdd mode, the ACK/NACK feedback of TTI boundling is positioned at last subframe the 4th subframe (Last Bundled Subframe+4) afterwards of TTI boundling opportunity, and the retransmission operation of TTI boundling occurs in the subframe of 2 times of HARQ RTT positions after first subframe of TTI boundling.The principle schematic of TTI bunching scheme as shown in Figure 3 under the fdd mode, 3GPP has adopted the TTI boundling size of 4 fixing continuous subframes, HARQ process 0 uses these 4 continuous TTI to send redundancy versions 0～3 (RV=0 of transmission block, RV=1, RV=2, RV=3), the ACK/NACK of TTI boundling feeds back in the position of HARQ process 7 virgin's frames, and the re-transmission of TTI boundling is in the position of 2 HARQ RTT.The HARQ of TTI boundling feedback is relevant with concrete HARQ process configuration relation with the timing relationship that HARQ retransmits under the tdd mode, but basic principle and fdd mode are similar, and namely its HARQ feedback also is based on last subframe of TTI boundling.
In realizing process of the present invention, the inventor finds that the basic principle of above-mentioned TTI bunching scheme is for dynamic dispatching, existing semi-persistent scheduling is that required resource does not define or disposes when using the TTI bunching scheme, after so the TTI bunching scheme of UE is opened by the RRC signaling at present, if semi-persistent scheduling is configured, then only can satisfy the transmission of the redundancy versions of the head of first subframe institute biography in the TTI boundling by the predefined resource of semi-persistent scheduling, and can not satisfy the required resource of the corresponding redundancy versions of other subframe.
Summary of the invention
The present invention aims to provide a kind of mixed automatic retransmission request method, the problem of up semi-persistent scheduling when solving above-mentioned use TTI bunching scheme.
In one embodiment of the invention, a kind of mixed automatic retransmission request method is provided, in the TTI boundling, use up semi-persistent scheduling, for up semi-persistent scheduling distributes the predefine resource, may further comprise the steps: UE first subframe in the TTI boundling uses the predefine resource to send its corresponding redundancy versions; UE other subframes in the TTI boundling send respectively each self-corresponding redundancy versions.
Preferably, UE other subframes in the TTI boundling send respectively each self-corresponding redundancy versions and specifically comprise: UE other subframes in the TTI boundling are used respectively the resource identical with first subframe in the TTI boundling to carry out non-self-adapting and are retransmitted each self-corresponding redundancy versions.
Preferably, the TTI boundling comprises 4 subframes, and UE other subframes in the TTI boundling send respectively each self-corresponding redundancy versions and specifically comprise: UE other 3 subframes in the TTI boundling use respectively the resource non-self-adapting identical with first subframe in the TTI boundling to retransmit each self-corresponding redundancy versions.
Preferably, UE other subframes in the TTI boundling are carried out non-self-adapting when retransmitting, and adopt the Modulation and Coding Scheme identical with interior first subframe of TTI boundling.
Preferably, UE other subframes in the TTI boundling are carried out respectively non-self-adapting and retransmitted and also comprise after each self-corresponding redundancy versions: the base station is carried out up semi-persistent scheduling and is reshuffled, and is each the sub-frame allocation predefine resource in the TTI boundling; UE each subframe in the TTI boundling uses respectively the predefine resource to send separately corresponding redundancy versions.
Preferably, UE other subframes in the TTI boundling are carried out respectively non-self-adapting and retransmitted and also comprise after each self-corresponding redundancy versions: the base station is carried out up semi-persistent scheduling and is reshuffled, and is first sub-frame allocation predefine resource in the TTI boundling; UE first subframe in the TTI boundling uses the predefine resource to send its corresponding redundancy versions; UE other subframes in the TTI boundling use respectively the resource non-self-adapting identical with first subframe in the TTI boundling to retransmit each self-corresponding redundancy versions.
Preferably, UE other subframes in the TTI boundling are carried out respectively non-self-adapting and are retransmitted and also comprise after each self-corresponding redundancy versions: if UE does not receive the semi-persistent scheduling reconfiguration message, then other subframes in the TTI boundling are used non-self-adapting to retransmit and are sent corresponding redundancy versions, until the predefine resource is deactivated or this TTI bunching scheme is closed.
Preferably, this mixed automatic retransmission request method also comprises: UE 1/ layer of 2 control channel of first subframe position place monitor layer in the TTI boundling, and to receive the possible configuration messages about subframe from the base station.
Preferably, this mixed automatic retransmission request method also comprises: UE is used for the predefine resource the up semi-persistent scheduling of first subframe in the TTI boundling.
Preferably, when base station execution semi-persistent scheduling is reshuffled, for first subframe or whole sub-frame allocation predefine resources TTI boundling in of UE in the TTI boundling are used for up semi-persistent scheduling.
Preferably, when base station execution semi-persistent scheduling is reshuffled, be the whole subframe dynamic assignment resources of UE in the TTI boundling, be used for dynamic dispatching.
Preferably, other subframes in the TTI boundling are the subframes of not distributing the predefine resource in the TTI boundling, and UE does not distribute the subframe of predefine resource to use respectively the resource identical with first subframe in the TTI boundling to carry out non-self-adapting in the TTI boundling to retransmit each self-corresponding redundancy versions.
The mixed automatic retransmission request method of above-described embodiment has provided resource distribution and using method that the TTI bunching scheme is opened rear semi-persistent scheduling, define interior each subframe of TTI boundling and sent respectively the required resource of corresponding redundancy versions and MCS scheme, solve the problem of the up semi-persistent scheduling of the corresponding redundancy versions of subframe that does not have the predefine resource under the above-mentioned TTI bunching scheme, thereby realized the up semi-persistent scheduling of TTI boundling.
Description of drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, consists of the application's a part, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 shows the flow chart according to the mixed automatic retransmission request method of the embodiment of the invention;
Fig. 2 shows according to the present invention the flow chart of the mixed automatic retransmission request method of embodiment in the LTE system;
Fig. 3 shows the according to the preferred embodiment of the invention schematic diagram of E-UTRAN uplink layer 2 structures;
Fig. 4 shows the according to the preferred embodiment of the invention schematic diagram of fdd mode TTI bunching scheme;
Fig. 5 shows the flow chart according to the mixed automatic retransmission request method of the preferred embodiment of the present invention 1;
Fig. 6 shows the flow chart according to the mixed automatic retransmission request method of the preferred embodiment of the present invention 2;
Fig. 7 shows the flow chart according to the mixed automatic retransmission request method of the preferred embodiment of the present invention 3.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.
Fig. 1 shows the flow chart according to the mixed automatic retransmission request method of the embodiment of the invention, in the TTI boundling, use up semi-persistent scheduling, for up semi-persistent scheduling distributes the predefine resource, wherein, the configuration of semi-persistent scheduling resource is prior to the unlatching of TTI bunching scheme, and the base station is that UE distributes the predefine resource to be used for semi-persistent scheduling; Further comprising the steps of:
Step S1, UE first subframe in the TTI boundling uses the predefine resource to send its corresponding redundancy versions;
Step S2, UE other subframes in the TTI boundling send respectively each self-corresponding redundancy versions.
This mixed automatic retransmission request method has provided resource distribution and using method that the TTI bunching scheme is opened rear semi-persistent scheduling, define interior each subframe of TTI boundling and sent respectively the required resource of corresponding redundancy versions and MCS scheme, solve the problem of the up semi-persistent scheduling of the corresponding redundancy versions of subframe that does not have the predefine resource under the above-mentioned TTI bunching scheme, thereby realized the up semi-persistent scheduling of TTI boundling.
Preferably, step S2 specifically comprises: UE other subframes in the TTI boundling are used respectively the resource identical with first subframe in the TTI boundling to carry out non-self-adapting and are retransmitted each self-corresponding redundancy versions.
Preferably, the TTI boundling comprises 4 subframes, and step S2 specifically comprises: UE other 3 subframes in the TTI boundling use respectively the resource non-self-adapting identical with first subframe in the TTI boundling to retransmit each self-corresponding redundancy versions.
Preferably, UE other subframes in the TTI boundling are carried out non-self-adapting when retransmitting, and adopt the Modulation and Coding Scheme identical with interior first subframe of TTI boundling.
Therefore, single TTI boundling only needs single feedback, and the timing relationship of feedback is based on the position of last subframe in the TTI boundling, and namely the TTI bunching scheme of the timing relationship of feedback when being used for dynamic dispatching is identical.In addition, the base station does not need again to carry out uplink authorization by layer 1 layer/2 control channel (PDCCH), and uses the semi-persistent scheduling resource information that has been configured.
Preferably, UE other subframes in the TTI boundling are carried out respectively non-self-adapting and retransmitted and also comprise after each self-corresponding redundancy versions: the base station is carried out up semi-persistent scheduling and is reshuffled, and is each the sub-frame allocation predefine resource in the TTI boundling; UE each subframe in the TTI boundling uses respectively the predefine resource to send separately corresponding redundancy versions.
Preferably, UE other subframes in the TTI boundling are carried out respectively non-self-adapting and retransmitted and also comprise after each self-corresponding redundancy versions: the base station is carried out up semi-persistent scheduling and is reshuffled, and is first sub-frame allocation predefine resource in the TTI boundling; UE first subframe in the TTI boundling uses the predefine resource to send its corresponding redundancy versions; UE other subframes in the TTI boundling use respectively the resource non-self-adapting identical with first subframe in the TTI boundling to retransmit each self-corresponding redundancy versions.
Preferably, UE other subframes in the TTI boundling are carried out respectively non-self-adapting and are retransmitted and also comprise after each self-corresponding redundancy versions: if UE does not receive the semi-persistent scheduling reconfiguration message, then other subframes in the TTI boundling are used non-self-adapting to retransmit and are sent corresponding redundancy versions, until the predefine resource is deactivated or this TTI bunching scheme is closed.
Preferably, this mixed automatic retransmission request method also comprises: UE 1/ layer of 2 control channel of first subframe position place monitor layer (as in the LTE system, being the PDCCH channel) in the TTI boundling, and to receive the possible configuration messages about subframe from the base station.
Preferably, this mixed automatic retransmission request method also comprises: UE is used for the predefine resource the up semi-persistent scheduling of first subframe in the TTI boundling.
Preferably, when base station execution semi-persistent scheduling is reshuffled, for first subframe or whole sub-frame allocation predefine resources TTI boundling in of UE in the TTI boundling are used for up semi-persistent scheduling.
Preferably, when base station execution semi-persistent scheduling is reshuffled, be the whole subframe dynamic assignment resources of UE in the TTI boundling, be used for dynamic dispatching.
Preferably, other subframes in the TTI boundling are the subframes of not distributing the predefine resource in the TTI boundling, and UE does not distribute the subframe of predefine resource to use respectively the resource identical with first subframe to carry out non-self-adapting in the TTI boundling to retransmit each self-corresponding redundancy versions.
In another embodiment of the present invention, the configuration of semi-persistent scheduling resource is later than the unlatching of TTI bunching scheme, if in the time of then need to being configured up semi-persistent scheduling after the TTI bunching scheme is opened, the uplink authorization of semi-persistent scheduling is carried out in the base station by 1/ layer of 2 control channel of layer (being the PDCCH channel in the LTE system).Uplink authorization can distribution T TI boundling in the information such as resource, MCS of first subframe, the perhaps information such as the resource of each subframe, MCS in the distribution T TI boundling.
Preferably, if before the TTI bunching scheme is opened, up semi-persistent scheduling also is not configured, if UE receives the configuration messages of semi-persistent scheduling resource, when in configuration messages, only comprising the predefine resource of first subframe in the TTI boundling, then first subframe uses the predefine resource that disposes to send corresponding redundancy versions in the TTI boundling, and other subframe without the predefine resource is used non-self-adapting to retransmit and sent corresponding redundancy versions; When comprising the predefine resource of each subframe in the TTI boundling in configuration messages, then each subframe uses the predefine resource that disposes to send corresponding redundancy versions in the TTI boundling.
Dynamic dispatching and other UE of this UE for semi-persistent scheduling, be avoided each subframe resource requirement in the TTI boundling is distributed in the base station after opening the TTI bunching scheme.Pass in the situation of resource requirement conflict with other UE semi-persistent scheduling head if distribute to certain UE each subframe resource requirement in the TTI boundling, the base station can be reshuffled the semipersistent resource of the UE that is correlated with by layer 1 layer/2 control channel (being the PDCCH channel in the LTE system).
The below describes embodiments of the invention for the LTE system.
Fig. 2 shows according to the present invention the flow chart of the mixed automatic retransmission request method of embodiment in the LTE system, may further comprise the steps:
Step S10, E-UTRAN are that semi-persistent scheduling distributes predefined resource;
Step S20, UE first subframe in the TTI boundling uses the predefine resource to send its corresponding redundancy versions (RV); That is, there is the subframe of predefine resource to use the predefine resource to send corresponding redundancy versions in the TTI boundling;
Step S30, UE other subframes in the TTI boundling send respectively corresponding redundancy versions." corresponding redundancy versions " refers to be in the TTI boundling redundancy versions of the defined correspondence of each subframe.
This mixed automatic retransmission request method has provided resource distribution and using method that the TTI bunching scheme is opened rear semi-persistent scheduling, define interior each subframe of TTI boundling and sent respectively the required resource of corresponding redundancy versions and MCS scheme, realized the up semi-persistent scheduling of TTI boundling.
Preferably, step S30 specifically comprises: UE other subframes in the TTI boundling use respectively the resource non-self-adapting identical with first subframe in the TTI boundling to retransmit each self-corresponding redundancy versions.That is, UE does not have the subframe of predefine resource or TTI to use non-self-adapting to retransmit the corresponding redundancy versions of transmission in the TTI boundling.
Preferably, the LTE system is fdd mode, and the TTI boundling comprises 4 subframes, and step S30 specifically comprises: UE other 3 subframes in the TTI boundling use respectively the resource non-self-adapting identical with first subframe in the TTI boundling to retransmit each self-corresponding redundancy versions.Obviously this method can also be used for tdd mode.
Preferably, when UE other subframes in the TTI boundling are carried out the non-self-adapting re-transmission, adopt the Modulation and Coding Scheme (MCS) identical with first subframe.That is, when in the TTI boundling, carrying out the non-self-adapting re-transmission, use the information and executing HARQ such as the resource identical with the subframe that the predefine resource is arranged, MCS to retransmit in the subframe that does not have the predefine resource.
When in the TTI boundling, carrying out the non-self-adapting re-transmission, the feedback information that once sends before not needing.
Single TTI boundling only needs single feedback, and the timing relationship of feedback is based on the position of last subframe in the TTI boundling, and namely the TTI bunching scheme of the timing relationship of feedback when being used for dynamic dispatching is identical.
E-UTRAN does not need again to carry out uplink authorization by layer 1 layer/2 control channel (PDCCH), and uses the semi-persistent scheduling resource information that has been configured.
Preferably, after step S30, E-UTRAN carries out semi-persistent scheduling and reshuffles, and is the predefined resource of each sub-frame allocation in the TTI boundling; UE each subframe in the TTI boundling uses respectively predefined resource to send separately corresponding redundancy versions.That is, if UE receives the reconfiguration message of semi-persistent scheduling resource, when comprising the predefine resource of each subframe in the TTI boundling in reconfiguration message, then each subframe uses the predefine resource after reshuffling to send corresponding redundancy versions in the TTI boundling.
Preferably, after step S30, E-UTRAN carries out semi-persistent scheduling and reshuffles, and only is the predefined resource of first sub-frame allocation in the TTI boundling; UE first subframe in the TTI boundling uses predefined resource to send its corresponding redundancy versions; UE other subframes in the TTI boundling use respectively the resource non-self-adapting identical with first subframe to retransmit each self-corresponding redundancy versions.Namely, when in reconfiguration message, only comprising the predefine resource of first subframe in the TTI boundling, then first subframe uses the predefine resource after reshuffling to send corresponding redundancy versions in the TTI boundling, and other subframe without the predefine resource is used non-self-adapting to retransmit and sent corresponding redundancy versions.
Preferably, after step S30, if UE does not receive the semi-persistent scheduling reconfiguration message, then do not distribute the subframe of predefined resource to use non-self-adapting to retransmit the corresponding redundancy versions of transmission in the TTI boundling, until predefined resource is deactivated or this TTI bunching scheme is closed.
Preferably, UE at least need to be at first subframe position place monitor layer 1 layer/2 control channels (PDCCH) of TTI boundling, to receive the possible configuration messages about subframe from E-UTRAN.
Preferably, UE is used for the predefine resource the up semi-persistent scheduling of first subframe in the TTI boundling.
Preferably, E-UTRAN is that first subframe or whole sub-frame allocation predefine resources TTI boundling in of UE in the TTI boundling are used for up semi-persistent scheduling.
Preferably, E-UTRAN is that the whole subframe dynamic assignment resources of UE in the TTI boundling are used for dynamic dispatching.
That is, E-UTRAN for semi-persistent scheduling, avoid each subframe resource requirement in the TTI boundling is distributed to dynamic dispatching and other UE of this UE after opening the TTI bunching scheme.If distribute to certain UE each subframe resource requirement and the conflict of the first biography of other UE semi-persistent scheduling resource requirement in the TTI boundling, then E-UTRAN can reshuffle the semipersistent resource of relevant UE by PDCCH.
The mixed automatic retransmission request method of above-mentioned semi-persistent scheduling is applicable to fdd mode, also is applicable to tdd mode.
Fig. 3 shows the according to the preferred embodiment of the invention schematic diagram of E-UTRAN uplink layer 2 structures, comprise packet data convergence protocol layer (PDCP), radio link control layer (RLC) and three protocol layers of media access control layer (MAC), each protocol layer comprises respectively corresponding functional entity: the PDCP layer comprises head compression ROHC, safe Security; Rlc layer comprises segmentation/HARQ ARQ; The MAC layer comprises scheduling/processed (Scheduling/Priority handling), multiplexing (Multiplexing), mixed automatic retransfer request (HARQ), realizes the mapping function of logic channel (Logical Channels) and transmission channel (Transport Channels).
Fig. 4 has illustrated the principle schematic of fdd mode TTI bunching scheme, used the TTI boundling of 4 subframes (in the situation that adopts other number of sub-frames such as 3 subframes among the figure, principle is identical), when this scheme is used for the mixed automatic retransfer request of semi-persistent scheduling according to the present invention, be described as follows:
Only first subframe of TTI boundling has predefined semipersistent resource, and this subframe is used for sending redundancy versions RV=0.Its excess-three sub-frame does not have the predefine resource in the TTI boundling, and these three subframes are used for sending RV=1, RV=2 and three redundancy versions of RV=3.According to the present invention, retransmit in (subframes of 2 times of HARQ RTT positions after first subframe of TTI boundling) at the HARQ of the head of TTI boundling biography and TTI boundling, these three do not have the re-transmission of subframe in the TTI boundling of predefine resource all to use non-self-adapting to retransmit RV=1, RV=2 and three redundancy versions of RV=3 that send respectively correspondence, use the information and executing HARQ such as the resource identical with first subframe, MCS to retransmit.
Fig. 5 has illustrated the flow process of a kind of mixed automatic retransmission request method embodiment 1 of semi-persistent scheduling, and concrete steps are as follows:
Step 110: certain subscriber equipment (UE) has been configured up semi-persistent scheduling scheme.
Step 120:UE carries out relevant up transmission according to the semi-persistent scheduling scheme.That is, during UE was by the subframe of pre-allocation resource (Subframe), if UE does not find its C-RNTI at the PDCCH channel, UE carried out up transmission in corresponding subframe according to the predefine resource.Generally speaking, this predefine resource sends corresponding to the HARQ of 1 subframe, is made as corresponding to first subframe in the TTI boundling.
Step 130:E-UTRAN is by RRC signal deployment (or unlatching) TTI bunching scheme.
Step 140: subscriber equipment uses the predefine resource to send first redundancy versions in the TTI boundling, and using non-self-adapting to retransmit to send does not respectively have the corresponding redundancy versions of all the other subframes of predefine resource in the TTI boundling.
Step 150:E-UTRAN closes the TTI bunching scheme by the RRC signaling.
Step 160: subscriber equipment recovers to carry out up transmission according to the identical method of step 120.
Fig. 6 has illustrated the flow process of a kind of mixed automatic retransmission request method embodiment 2 of semi-persistent scheduling, and concrete steps are as follows:
Step 110: certain subscriber equipment (UE) has been configured up semi-persistent scheduling scheme.
Step 120:UE carries out relevant up transmission according to the semi-persistent scheduling scheme.That is, during UE was by the subframe of pre-allocation resource (Subframe), if UE does not find its C-RNTI at the PDCCH channel, UE carried out up transmission in corresponding subframe according to the predefine resource.Generally speaking, this predefine resource sends corresponding to the HARQ of 1 subframe, is made as corresponding to first subframe in the TTI boundling.
Step 130:E-UTRAN is by RRC signal deployment (or unlatching) TTI bunching scheme.
Step 140: subscriber equipment uses the predefine resource to send first redundancy versions in the TTI boundling, and using non-self-adapting to retransmit to send does not respectively have the corresponding redundancy versions of all the other subframes of predefine resource in the TTI boundling.
Step 150:E-UTRAN carries out semi-persistent scheduling and reshuffles, and reconfiguration information has defined each subframe resource requirement in the TTI boundling.
Step 160: subscriber equipment is carried out the up transmission of each subframe in the TTI boundling according to the semipersistent resource after reshuffling.
Fig. 7 has illustrated the flow process of a kind of mixed automatic retransmission request method embodiment 3 of semi-persistent scheduling, and concrete steps are as follows:
Step 110: certain subscriber equipment (UE) has been configured up semi-persistent scheduling scheme.
Step 120:UE carries out relevant up transmission according to the semi-persistent scheduling scheme.That is, during UE is by the subframe of pre-allocation resource (Subframe), if UE does not find its C-RNTI at the PDCCH channel; UE carries out up transmission in corresponding subframe according to the predefine resource.Generally speaking, this predefine resource sends corresponding to the HARQ of 1 subframe, is made as corresponding to first subframe in the TTI boundling.
Step 130:E-UTRAN is by RRC signal deployment (or unlatching) TTI bunching scheme.
Step 140: subscriber equipment uses the predefine resource to send first redundancy versions in the TTI boundling, and using non-self-adapting to retransmit to send does not respectively have the corresponding redundancy versions of all the other subframes of predefine resource in the TTI boundling.
Step 150:E-UTRAN carries out semi-persistent scheduling and reshuffles, and reconfiguration information has only redefined first subframe resource requirement in the TTI boundling, does not define all the other subframe resource requirements.
Step 160: subscriber equipment is according to the up transmission of first subframe in the execution of the semipersistent resource after the reshuffling TTI boundling, and the up transmission of all the other subframes uses non-self-adapting to retransmit in the TTI boundling.
As can be seen from the above description, the mixed automatic retransmission request method of the semi-persistent scheduling that the above embodiment of the present invention proposes has solved in the TTI boundling situation and has carried out the problem that HARQ sends without the subframe of predefine resource.The method has simply, reliability is high, the advantage of saving PDCCH signaling, can not carry out reshuffling of semipersistent resource after the TTI bunching scheme is opened, and also supports reshuffling of semipersistent resource.The method disclosed in the present is applicable to FDD and two kinds of patterns of TDD.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and be carried out by calculation element, perhaps they are made into respectively each integrated circuit modules, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. a mixed automatic retransmission request method is used up semi-persistent scheduling in transmission time interval (tti) bundle, for described up semi-persistent scheduling distributes the predefine resource, it is characterized in that, may further comprise the steps:
Subscriber equipment first subframe in described transmission time interval (tti) bundle uses described predefine resource to send its corresponding redundancy versions;
Described subscriber equipment other subframes in described transmission time interval (tti) bundle send respectively each self-corresponding redundancy versions.
2. mixed automatic retransmission request method according to claim 1 is characterized in that, described subscriber equipment other subframes in described transmission time interval (tti) bundle send respectively each self-corresponding redundancy versions and specifically comprise:
Described subscriber equipment other subframes in described transmission time interval (tti) bundle are used respectively the resource identical with first subframe in the described transmission time interval (tti) bundle to carry out non-self-adapting and are retransmitted each self-corresponding redundancy versions.
3. mixed automatic retransmission request method according to claim 1, it is characterized in that, described transmission time interval (tti) bundle comprises 4 subframes, and described subscriber equipment other subframes in described transmission time interval (tti) bundle send respectively each self-corresponding redundancy versions and specifically comprise:
Described subscriber equipment other 3 subframes in described transmission time interval (tti) bundle use respectively the resource non-self-adapting identical with first subframe in the described transmission time interval (tti) bundle to retransmit each self-corresponding redundancy versions.
4. mixed automatic retransmission request method according to claim 2, it is characterized in that, described subscriber equipment other subframes in described transmission time interval (tti) bundle are carried out non-self-adapting when retransmitting, and adopt the Modulation and Coding Scheme identical with interior first subframe of described transmission time interval (tti) bundle.
5. mixed automatic retransmission request method according to claim 4 is characterized in that, described subscriber equipment other subframes in described transmission time interval (tti) bundle are carried out respectively non-self-adapting and retransmitted and also comprise after each self-corresponding redundancy versions:
The base station is carried out up semi-persistent scheduling and is reshuffled, and is the described predefine resource of each sub-frame allocation in the described transmission time interval (tti) bundle;
Described subscriber equipment each subframe in described transmission time interval (tti) bundle uses respectively described predefine resource to send separately corresponding redundancy versions.
6. mixed automatic retransmission request method according to claim 4 is characterized in that, described subscriber equipment other subframes in described transmission time interval (tti) bundle are carried out respectively non-self-adapting and retransmitted and also comprise after each self-corresponding redundancy versions:
The base station is carried out up semi-persistent scheduling and is reshuffled, and is the described predefine resource of first sub-frame allocation in the described transmission time interval (tti) bundle;
Described subscriber equipment first subframe in described transmission time interval (tti) bundle uses described predefine resource to send its corresponding redundancy versions;
Described subscriber equipment other subframes in described transmission time interval (tti) bundle use respectively the resource non-self-adapting identical with first subframe in the described transmission time interval (tti) bundle to retransmit each self-corresponding redundancy versions.
7. mixed automatic retransmission request method according to claim 4 is characterized in that, described subscriber equipment other subframes in described transmission time interval (tti) bundle are carried out respectively non-self-adapting and retransmitted and also comprise after each self-corresponding redundancy versions:
If described subscriber equipment does not receive the semi-persistent scheduling reconfiguration message, then other subframes in described transmission time interval (tti) bundle are used non-self-adapting to retransmit and are sent corresponding redundancy versions, until described predefine resource is deactivated or this transmission time interval (tti) bundle scheme is closed.
8. according to claim 1 to 7 each described mixed automatic retransmission request method, it is characterized in that, also comprise:
Described subscriber equipment 1/ layer of 2 control channel of first subframe position place monitor layer in described transmission time interval (tti) bundle is to receive the possible configuration messages about described subframe from the base station.
9. according to claim 1 to 4 each described mixed automatic retransmission request method, it is characterized in that, also comprise:
Described subscriber equipment is used for described predefine resource the up semi-persistent scheduling of first subframe in the described transmission time interval (tti) bundle.
10. according to claim 5 or 6 described mixed automatic retransmission request method, it is characterized in that,
When the base station is carried out described up semi-persistent scheduling and is reshuffled, for first subframe or whole sub-frame allocation described transmission time interval (tti) bundle in the described predefine resource of described subscriber equipment in described transmission time interval (tti) bundle is used for described up semi-persistent scheduling.
11. according to claim 5 or 6 described mixed automatic retransmission request method, it is characterized in that,
When described base station is carried out described up semi-persistent scheduling and reshuffled, be the whole subframe dynamic assignment resources of described subscriber equipment in described transmission time interval (tti) bundle, be used for dynamic dispatching.
12. according to claim 1 to 11 each described mixed automatic retransmission request method, it is characterized in that, other subframes in the described transmission time interval (tti) bundle are the subframes of not distributing described predefine resource in the described transmission time interval (tti) bundle, and described subscriber equipment does not distribute the subframe of described predefine resource to use respectively the resource identical with first subframe in the described transmission time interval (tti) bundle to carry out non-self-adapting in described transmission time interval (tti) bundle to retransmit each self-corresponding redundancy versions.
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| CN102355334B (en) * | 2011-07-22 | 2017-06-09 | 中兴通讯股份有限公司 | The transmission method and user equipment of data under a kind of semi-persistent scheduling mode |
| US9526091B2 (en) * | 2012-03-16 | 2016-12-20 | Intel Corporation | Method and apparatus for coordination of self-optimization functions in a wireless network |
| CN103326823B (en) * | 2012-03-20 | 2018-05-04 | 中兴通讯股份有限公司 | Data transmission method and device |
| CN103378936A (en) * | 2012-04-28 | 2013-10-30 | 中兴通讯股份有限公司 | Data transmission method and device |
| CN103546253B (en) * | 2012-07-09 | 2018-05-04 | 中兴通讯股份有限公司 | A kind of data transmission method and system |
| CN103580822B (en) * | 2012-07-26 | 2018-06-19 | 中兴通讯股份有限公司 | A kind of data transmission method and system |
| CN104519574B (en) * | 2013-09-27 | 2019-07-05 | 中兴通讯股份有限公司 | A kind of enhancing transmission time interval (tti) bundle transmission method and device |
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