CN104601301A - Method and equipment for implanting uplink HARQ (Hybrid Automatic Repeat Request) process in service flow adaptive system - Google Patents
Method and equipment for implanting uplink HARQ (Hybrid Automatic Repeat Request) process in service flow adaptive system Download PDFInfo
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Abstract
The application discloses a method and equipment for implementing an uplink HARQ (Hybrid Automatic Repeat Request) process in a service flow adaptive system. The method comprises the following steps that: UE (User Equipment) receives signaling of an eNB (evolved Node B) and practical TDD (Time Division Duplexing) uplink and downlink configuration, and determines an uplink HARQ timing relation and an uplink HARQ process breaking point in a service flow adaptive state; if the UE transmits a PUSCH (Physical Uplink Shared Channel) on a sub-frame n-k and a sub-frame n+j is a downlink sub-frame according to the uplink HARQ timing relation, a PHICH (Physical HARQ Indicator Channel) and uplink authentication on a sub-frame n are not detected, and a physical layer reports ACK or NACK to a high layer; or the UE detects the PHICH and/or the uplink authentication on the sub-frame n, and the physical layer reports a detection result and/or an uplink authentication instruction to the high layer; and the UE retransmits the PUSCH on the sub-frame n-k on a practical uplink sub-frame corresponding to the uplink HARQ process or newly transmits the PUSCH of the uplink HARQ process. Through the application, effective transmission of uplink data can be implemented.
Description
Technical field
The present invention relates to wireless communication technology field, relate to implementation method and the equipment of ascending HARQ process in service traffics Adaptable System in particular.
Background technology
Long Term Evolution (LTE, Long Term Evolution) technical support Frequency Division Duplexing (FDD) (FDD, Frequency Division Duplexing) and TDD two kinds of duplex modes.Fig. 1 is the frame structure schematic diagram of the TDD system of LTE.The length of each radio frames is 10 milliseconds (ms); being divided into two length is the field of 5ms; each field comprises 3 special domain that time slot that 8 length are 0.5ms and total length are 1ms; 3 special domain are respectively descending pilot frequency time slot (DwPTS; Downlink pilot time slot), protection interval (GP; Guard period) and uplink pilot time slot (UpPTS, Uplink pilot time slot), each subframe is made up of two continuous print time slots.
Transmission in TDD system comprises: by base station to the transmission (being called descending) of subscriber equipment (UE, User Equipment) with by the transmission (be called up) of UE to base station.Based on the frame structure shown in Fig. 1, in every 10ms time uplink and downlink share 10 subframes, each subframe or configuration to up or configuration to descending, by configuration be called sub-frame of uplink to up subframe, by configuration be called descending sub frame to descending subframe.Support the configuration of 7 kinds of upstream and downstreams in TDD system, as shown in table 1, D represents descending sub frame, and U represents sub-frame of uplink, and S represents the above-mentioned special subframe comprising 3 special domain, hereinafter by approximate for the transmission direction of special subframe regard as descending.
Table 1
In order to improve the transmission rate of user, propose enhancing (LTE-A) technology of LTE.In LTE and LTE-A, the HARQ-ACK(Hybrid Automatic Repeat Request-ACKnowledgement of each up shared data channel (PUSCH:Physical Uplink Shared Channel)) can at down channel PHICH(Physical HARQ Indicator Channel) in feedback, the system PHICH resource collection that has been the PUSCH independent allocation in each sub-frame of uplink.
To the timing relationship of PHICH to PUSCH, in LTE and LTE-A, the PHICH resource collection for the PUSCH independent allocation in each sub-frame of uplink.Suppose that UE receives PHICH at descending sub frame n, then this PHICH is for controlling the PUSCH in sub-frame of uplink n+j, and the value of j defines in table 2 here.Specifically, concerning TDD uplink-downlink configuration 1 ~ 6, the quantity of sub-frame of uplink is less than or equal to descending sub frame, for any descending sub frame n, by a unique j value, unique PUSCH timing relationship can be configured, reflect in table 2, PHICH resource collection can not be configured in a descending sub frame, or the PHICH resource collection of a sub-frame of uplink can only be configured; Concerning TDD uplink-downlink configuration 0, the quantity of sub-frame of uplink is greater than descending sub frame, then j value is not unique, but be configured with two PHICH resource collection respectively at descending sub frame 0 and 5, i.e. PHICH resource 0 and PHICH resource 1, for different PHICH resource, uses different j values.Such as, when UE receives PHICH at descending sub frame 0, the PUSCH in sub-frame of uplink 4 and/or sub-frame of uplink 7 can be triggered.
The timing relationship table of table 2PHICH to PUSCH
According to the timing relationship of PUSCH to the PHICH in LTE and LTE-A, concerning upstream and downstream configuration 1 ~ 6, when UE receives PHICH in descending sub frame n, the ACK/NACK of what this PHICH indicated is PUSCH in sub-frame of uplink n-k, the value of k is as shown in table 3.Concerning upstream and downstream configuration 0, when 0th PHICH resource of UE in descending sub frame n receives PHICH, this PHICH controls the PUSCH in sub-frame of uplink n-k; When UE receives PHICH in the 1st PHICH resource of descending sub frame 0 or descending sub frame 5, this PHICH controls the PUSCH transmission in sub-frame of uplink n-6.
Table 3
Along with user is to the raising of data transmission rates demands, in the discussion of LTE more highest version, there has been proposed the adaptive TDD technology of service traffics, by the ratio of dynamic conditioning sub-frame of uplink and descending sub frame, make current uplink-downlink configuration more meet the ratio of current upstream traffic and downlink traffic, thus improve the up-downgoing peak rate of user and the throughput of system.
In service traffics Adaptable System, the situation that the HARQ procedure that there will be PUSCH is interrupted.Such as, due to the change in sub-frame transmission direction, the sub-frame of uplink that originally can be used as PUSCH re-transmission is made to become descending sub frame; Or because UE cannot determine the up-downlink direction of the sub-frame of uplink that PUSCH retransmits, such as UE cannot detect the signaling of instruction TDD uplink-downlink configuration, or the transmission timing of the signaling of instruction TDD uplink-downlink configuration is excessively late, makes UE cannot determine the up-downlink direction of subframe n+j at subframe n.As shown in Figure 2, the up-downgoing reference configuration that ascending HARQ process is obeyed is uplink-downlink configuration 1, according to the sequential of uplink-downlink configuration 1, the HARQ-ACK of sub-frame of uplink 202 transmits on the PHICH of subframe 203, the PUSCH transmission of re-transmission in subframe 204 of the PHICH instruction of subframe 203, due at 201 places in fact downstream arrangements become uplink-downlink configuration 2 from uplink-downlink configuration 1, subframe 204 reality is descending sub frame, and therefore the HARQ procedure of PUSCH is interrupted on 202.Or if UE failed to obtain the concrete indication signaling of subframe 204 up-downlink direction before subframe 203, then UE also cannot judge whether can send PUPSCH in subframe 204.According to existing standard, the PHICH in subframe 203 will trigger UE in subframe 204 to the re-transmission of the HARQ procedure of current PUSCH or new biography.Originally be used for ascending HARQ transmission by this for subframe 204 herein, became descending because the change of actual TDD uplink-downlink configuration, or failed to obtain uplink-downlink configuration indication signaling because of UE, cannot determine that the flexible sub-frame of its up-downlink direction was called ascending HARQ process breakpoint.Can see, under above-mentioned scene, due to the appearance of ascending HARQ process breakpoint, the HARQ procedure of PUSCH will be interrupted, so the behavior that the PHICH of existing standard definition is correlated with will be no longer applicable.
In addition, for service traffics Adaptable System, the timing relationship of PUSCH to PHICH is determined according to high-level signaling, and the transmission direction of subframe is determined according to physical layer signaling, because regulating the speed of high-level signaling will be slower than physical layer signaling, therefore, there will be such situation: PUSCH to the PHICH timing determined according to high-level signaling, for the PUSCH on subframe n has reserved PHICH resource, but subframe n is actually descending sub frame, does not need reserved PHICH resource to transmit its HARQ-ACK.Because PHICH channel is embedded in PDCCH(Physical Downlink Control CHannel) in the OFDM symbol at channel place, lowest version UE, when detecting PDCCH, needs to deduct the resource that PHICH takies, and determine PDCCH in remaining resource.Consider compatible lowest version UE, although the HARQ-ACK that PHICH will not transmit, these PHICH resource can not discharge for mapping PDCCH.
Summary of the invention
This application provides implementation method and the equipment of ascending HARQ process in a kind of service traffics Adaptable System, with when there is ascending HARQ course breakpoint, avoiding it on the impact of ascending HARQ process, realizing effective transmission of upstream data.
The implementation method of a kind of ascending HARQ process that the application provides, is applicable to service traffics Adaptable System, comprises:
If ascending HARQ breakpoint is because UE cannot determine that the actual duplex directions of subframe n+j produces, such as, UE cannot detect the signaling of instruction TDD uplink-downlink configuration, or, the transmission timing of the signaling of instruction TDD uplink-downlink configuration is excessively late, make UE cannot determine the up-downlink direction of subframe n+j at subframe n, at this moment, according to a kind of implementation of the application, UE skips PHICH on subframe n and/or uplink authorization detects, ACK or NACK is reported directly to high level, UE indicates according to the uplink authorization of follow-up eNB, retransmit the PUSCH of corresponding PUSCH or this ascending HARQ process of new biography.According to another implementation of the application, UE continues to detect the PHICH on subframe n and/or uplink authorization, and according to testing result, subframe n+j retransmits, the PUSCH of new biography or this ascending HARQ process of stopping transmission.
If HARQ breakpoint produces because subframe n+j becomes descending sub frame, the solution of the application comprises:
A, UE receive the signaling of eNB, determine the ascending HARQ timing relationship under service traffics self adaptation state and actual TDD uplink-downlink configuration, and determine ascending HARQ process breakpoint accordingly;
B, for the PUSCH transmission on subframe n-k, if according to the ascending HARQ timing relationship under service traffics self adaptation state, the PHICH that described PUSCH is corresponding transmits on subframe n, and the subframe n+j that described PUSCH transmits place is ascending HARQ process breakpoint next time, then UE skips the detection of PHICH on subframe n and uplink authorization, or, the PHICH on UE detection subframe n and/or uplink authorization;
C, UE, according to the instruction of eNB, retransmit the PUSCH of ascending HARQ process described in PUSCH on subframe n-k or new biography in the actual uplink subframe that follow-up and described ascending HARQ process is corresponding.
Preferably, in described B:
When UE skips the detection of PHICH on subframe n and uplink authorization, UE physical layer reports ACK or NACK to high level.
Preferably, in described C:
UE indicates according to the uplink authorization instruction of follow-up eNB or PHICH, the PUSCH on re-transmission subframe n-k or the PUSCH of this ascending HARQ process of new biography;
Or, UE is first actual uplink subframe corresponding with described ascending HARQ course after subframe n-k, according to the PHICH for described actual uplink subframe received before and/or uplink authorization, retransmit the PUSCH of ascending HARQ process described in PUSCH on subframe n-k or new biography in described actual uplink subframe.
Preferably, the method comprises further:
After ascending HARQ process breakpoint, the subframe that UE is meeting following condition detects PHICH, if the PHICH instruction detected retransmits, then according to the sequential of ascending HARQ PHICH to PUSCH, using corresponding subframe as described actual uplink subframe, retransmit described PUSCH:
Before the ascending HARQ process breakpoint of described ascending HARQ process, last sub-frame of uplink of described ascending HARQ process there is the PUSCH transmission of UE;
Between described ascending HARQ process breakpoint and the subframe of detected PHICH, there is no the sub-frame of uplink of described ascending HARQ process;
According to the timing relationship of PHICH to PUSCH, the subframe that the PHICH instruction detected retransmits is sub-frame of uplink.
Preferably, UE in described B is detected to the situation of PHICH on subframe n and/or uplink authorization, described C comprises: first available upstream subframe corresponding with this PUSCH process after ascending HARQ process breakpoint, retransmits the upstream data of upstream data on subframe n-k or this PUSCH process of new biography according to the testing result on subframe n.
Preferably, if UE cannot obtain actual TDD uplink-downlink configuration, the method comprises further: UE does not detect the PHICH that all instruction flexible sub-frame retransmit, and reports ACK or NACK to high level;
In described C, UE indicates according to the uplink authorization of follow-up eNB, retransmits the PUSCH of ascending HARQ process described in corresponding PUSCH or new biography.
A kind of ascending HARQ process that the application provides realize equipment, be applicable to service traffics Adaptable System, comprise: the first module, the second module and the 3rd module, wherein:
Described first module, for receiving the signaling of eNB, determining the ascending HARQ timing relationship under service traffics self adaptation state and actual TDD uplink-downlink configuration, and determining ascending HARQ process breakpoint accordingly;
For the PUSCH transmission on subframe n-k, if according to the ascending HARQ timing relationship under service traffics self adaptation state, the PHICH that described PUSCH is corresponding transmits on subframe n, and the subframe n+j that described PUSCH transmits place is ascending HARQ process breakpoint next time, then the second module skips the detection of PHICH on subframe n and uplink authorization, or, the PHICH on the second module detection subframe n and/or uplink authorization;
Described 3rd module, for the instruction according to eNB, retransmits the PUSCH of ascending HARQ process described in PUSCH on subframe n-k or new biography in the actual uplink subframe that follow-up and described ascending HARQ process is corresponding.
Present invention also provides a kind of implementation method of ascending HARQ process, be applicable to service traffics Adaptable System, comprise:
As the DL Grant not containing lowest version UE in subframe and UL Grant, and the PHICH resource in described subframe is not when being used as transmitting HARQ-ACK, PHICH resource in described subframe can be used as PDCCH resource, by the PCFICH of high-level signaling or physical layer, UE knows that whether subframe is containing PHICH resource; Wherein, described lowest version UE is the UE not supporting this method.
This application provides implementation method and the equipment of ascending HARQ process in service traffics Adaptable System, first, UE receives the signaling of eNB, determines the ascending HARQ timing relationship under service traffics self adaptation state, and receive actual TDD uplink-downlink configuration instruction, determine ascending HARQ process breakpoint; If UE sends PUSCH at subframe n-k, and according to the ascending HARQ timing relationship under service traffics self adaptation state, the PHICH that this PUSCH is corresponding transmits on subframe n, the subframe n+j next time transmitting place as this PUSCH is descending sub frame, then UE skips the detection of PHICH on subframe n and uplink authorization, and UE physical layer reports ACK or NACK directly to high level; Or the PHICH on UE detection subframe n and/or uplink authorization, and testing result (ACK/NACK) and/or uplink authorization instruction are reported high level by UE physical layer; Finally, UE is according to the instruction of eNB, the PUSCH of PUSCH on subframe n-k or this ascending HARQ process of new biography is retransmitted in the follow-up actual uplink subframe corresponding with this ascending HARQ process, by the technique scheme that the application provides, ascending HARQ process breakpoint can be avoided the impact of ascending HARQ process, realize effective transmission of upstream data.
Accompanying drawing explanation
Fig. 1 is the frame structure schematic diagram of LTE TDD;
Fig. 2 is the interrupted schematic diagram of HARQ procedure of PUSCH in service traffics Adaptable System;
Fig. 3 is the flow chart of the implementation method of ascending HARQ process in the better service traffics Adaptable System of the application one;
Fig. 4 is the composition structural representation of the better equipment of the application one.
Embodiment
In service traffics Adaptable System, due to the change in sub-frame transmission direction, the sub-frame of uplink that originally can be used as PUSCH transmission is made to become descending sub frame, PUSCH transmission in this subframe cannot be carried out, namely occur so-called ascending HARQ course breakpoint, the behavior that the PHICH of now existing standard definition is relevant will be no longer applicable.
For this reason, present applicant proposes a kind of implementation method of ascending HARQ, in service traffics Adaptable System, the PHICH on subframe n indicates PUSCH to retransmit on subframe n+j, when subframe n+j is ascending HARQ process breakpoint, for the PUSCH process that subframe n+j is corresponding:
According to a kind of implementation of the application, UE skips the detection of PHICH on subframe n and uplink authorization, and UE physical layer reports ACK directly to high level, then UE is according to the instruction of the follow-up uplink authorization for this PUSCH process or PHICH instruction, the upstream data of re-transmission or this PUSCH process of new biography;
According to the another kind of implementation of the application, UE skips the detection of PHICH on subframe n and uplink authorization, and UE physical layer reports NACK directly to upper strata, at follow-up first the in esse sub-frame of uplink belonging to the HARQ procedure of this PUSCH, UE according to for the uplink authorization of this sub-frame of uplink or PHICH, retransmits or the upstream data of this PUSCH process of new biography;
According to another implementation of the application, UE detects PHICH and uplink authorization on subframe n, and according to testing result (ACK/NACK) and/or uplink authorization instruction, first available upstream subframe corresponding with this PUSCH process after ascending HARQ process breakpoint retransmits or the upstream data of this PUSCH process of new biography.
Fig. 3 is the flow chart of the implementation method of ascending HARQ process in the better service traffics Adaptable System of the application one, comprises the following steps:
Step 301:UE receives the signaling of eNB, determines the ascending HARQ timing relationship under service traffics self adaptation state.
Step 302:UE receives the signaling of eNB, obtains actual TDD uplink-downlink configuration information, and according to the TDD uplink-downlink configuration of the ascending HARQ timing relationship under service traffics self adaptation state and reality, determines ascending HARQ process breakpoint.
Step 303: for the PUSCH transmission on subframe n-k, if according to the ascending HARQ timing relationship under service traffics self adaptation state, the PHICH that this PUSCH is corresponding transmits on subframe n, the subframe n+j that this PUSCH transmits place is next time ascending HARQ process breakpoint, then UE skips the detection of PHICH on subframe n and uplink authorization, and UE physical layer reports ACK or NACK directly to high level; Or the PHICH on UE detection subframe n and/or uplink authorization, and testing result (ACK/NACK) and/or uplink authorization instruction are reported high level by UE physical layer.
It should be noted is that, for some implementation methods of the application, whether due to, the PHICH detected on subframe n depends on the transmission direction of subframe n+j, at subframe n, UE just needs the transmission direction determining subframe n+j, and namely UE needs the actual TDD uplink-downlink configuration (comprising subframe n) and determine subframe n+j place radio frames before subframe n.Therefore, consider the timing of PHICH to PUSCH under each uplink-downlink configuration, UE needs the in fact downstream arrangements information receiving next radio frames before the subframe 6 of each radio frames, to determine the direction (upstream or downstream) of subframe n+j.
Step 304:UE, according to the instruction of eNB, retransmits the PUSCH of PUSCH on subframe n-k or this ascending HARQ process of new biography in the follow-up actual uplink subframe corresponding with this ascending HARQ process.
The different implementations that corresponding the application proposes, above-mentioned eNB instruction can be follow-up uplink authorization instruction, or for the PHICH information that PHICH information or the UE of first actual uplink subframe corresponding with this ascending HARQ course after subframe n-k detects on subframe n.
Below by specific embodiment, such scheme is described in detail.
Embodiment one
If the re-transmission that on subframe n, PHICH is corresponding is carried out on subframe n+j, the UE of the present embodiment proposition under being operated in service traffics self adaptation state is according to actual TDD uplink-downlink configuration information and ascending HARQ timing relationship, when determining that subframe n+j is descending sub frame, UE skips PHICH on subframe n and uplink authorization detects, and UE physical layer reports ACK directly to upper strata.After subframe n+j, base station utilizes UL Grant to trigger the re-transmission of PUSCH or the new biography of the ascending HARQ process corresponding with subframe n-k on subframe n-k as required.
Specifically, the present embodiment comprises the following steps:
Step 1:UE receives the signaling of eNB, determines the ascending HARQ timing relationship under service traffics self adaptation state.
Step 2:UE receives the signaling of eNB, obtains actual TDD uplink-downlink configuration, and according to the TDD uplink-downlink configuration of the ascending HARQ timing relationship under service traffics self adaptation state and reality, determines ascending HARQ process breakpoint.
Step 3: for the PUSCH transmission on subframe n-k, if according to the ascending HARQ timing relationship under service traffics self adaptation state, the PHICH that this PUSCH is corresponding transmits on subframe n, the subframe n+j that this PUSCH transmits place is next time ascending HARQ process breakpoint, then UE skips the detection of PHICH on subframe n and uplink authorization, and UE physical layer reports ACK directly to high level.
Step 4:UE indicates according to the uplink authorization instruction of follow-up eNB or PHICH, the PUSCH on re-transmission subframe n-k or the PUSCH of this ascending HARQ process of new biography.
Situation by PHICH trigger re-transmissions is described below.When UE has uplink in a HARQ procedure, because the subframe retransmitting PUSCH becomes descending, this HARQ procedure is interrupted, UE just can detect this HARQ procedure breakpoint after PHICH in a specific sub-frame, if this PHICH indicates re-transmission, then according to the sequential of ascending HARQ PHICH to PUSCH, in corresponding subframe x, retransmit PUSCH.Although before detected PHICH subframe, do not have corresponding PUSCH transmission, the PHICH in this subframe still needs to be detected.After ascending HARQ process breakpoint, the PHICH subframe detected is needed to meet following condition:
1) before the breakpoint of ascending HARQ process x, last sub-frame of uplink of ascending HARQ process x there is the PUSCH transmission of UE;
2) between the breakpoint and the subframe of detected PHICH of ascending HARQ process x, the sub-frame of uplink of HARQ procedure x is not had;
3) according to the timing relationship of PHICH to PUSCH, the subframe that the PHICH instruction detected retransmits is sub-frame of uplink.
Give one example explanation, if the PHICH on subframe B belongs to ascending HARQ process x, before the breakpoint of ascending HARQ process x, the subframe of last ascending HARQ process x, has the PUSCH transmission of UE.If that the PHICH instruction on subframe B is the HARQ-ACK of PUSCH on subframe A, the re-transmission that on subframe B, PHICH is corresponding is carried out on subframe C, when subframe A is descending sub frame, and when subframe C is sub-frame of uplink, UE needs to detect PHICH on subframe B, then retransmits according to the instruction of PHICH.
Embodiment two
If the re-transmission that on subframe n, PHICH is corresponding is carried out on subframe n+j, what the present embodiment was identical with embodiment one is when UE determines that subframe n+j is ascending HARQ breakpoint, UE skips PHICH on subframe n and uplink authorization detects, but is different from embodiment one, UE physical layer NACK is reported high level.Because high level receives NACK, MAC has some and embodiment one different disposal.Specifically, the present embodiment comprises the following steps:
Step 1:UE receives the signaling of eNB, determines the ascending HARQ timing relationship under service traffics self adaptation state.
Step 2:UE receives the signaling of eNB, obtains actual TDD uplink-downlink configuration, and according to the TDD uplink-downlink configuration of the ascending HARQ timing relationship under service traffics self adaptation state and reality, determines ascending HARQ process breakpoint.
Step 3: for the PUSCH transmission on subframe n-k, if according to the ascending HARQ timing relationship under service traffics self adaptation state, the PHICH that this PUSCH is corresponding transmits on subframe n, the subframe n+j that this PUSCH transmits place is next time ascending HARQ process breakpoint, then UE skips the detection of PHICH on subframe n and uplink authorization, and UE physical layer reports NACK directly to high level.
Step 4:UE is first actual uplink subframe corresponding with this ascending HARQ course after subframe n-k, indicate according to the PHICH for described actual uplink subframe received before and/or uplink authorization instruction, the PUSCH on this actual uplink subframe re-transmission subframe n-k or the PUSCH of this ascending HARQ process of new biography.In this step, PHICH trigger re-transmissions is identical with enforcement one.
According to a kind of implementation of the application, in the present embodiment step 3, the HARQ-ACK of preservation can be set to NACK by the MAC layer of UE.After ascending HARQ process breakpoint, UE determines to retransmit according to UL Grant or PHICH, and retransmits PUSCH on corresponding sub-frame of uplink.
The HARQ-ACK preserved due to MAC layer is set to NACK, here the process of MAC layer is different from embodiment one, the HARQ-ACK that high level receives preservation is NACK, namely the HARQ_FEEDBACK below in code, not trigger re-transmissions, need to judge whether the subframe that HARQ_FEEDBACK correspondence retransmits is sub-frame of uplink, if sub-frame of uplink just retransmits.As follows.
-if the HARQ entity requests a non-adaptive retransmission:
-if HARQ_FEEDBACK=NACK:
-if the non-adaptive retransmission is on the UL subframe
-generate a transmission as described below.
It should be noted that, in LTE36.321, non-self-adapting retransmits and refers to that UE is not when UL Grant being detected, according to the value of HARQ_FEEDBACK, judges whether that needs retransmit, when HARQ_FEEDBACK is NACK, retransmits.Each HARQ procedure has a HARQ_FEEDBACK parameter, i.e. HARQ_FEEDBACK with obtaining value amendment in PHICH, or when UE detects UL Grant, also can be set as NACK by the amendment of the HARQ-ACK of MAC layer preservation, HARQ_FEEDBACK.
According to another implementation of the application, in above-mentioned steps, the behavior of MAC layer is identical with existing standard definition.
Embodiment three
If the re-transmission that on subframe n, PHICH is corresponding is carried out on subframe n+j, when UE knows that subframe n+j is descending sub frame, PHICH on the present embodiment proposition UE detection subframe n and/or uplink authorization, and according to testing result (ACK/NACK) and/or uplink authorization instruction, first available upstream subframe corresponding with this PUSCH process after HARQ procedure breakpoint retransmits or the upstream data of this PUSCH process of new biography.Specifically, the present embodiment comprises the following steps:
Step 1:UE receives the signaling of eNB, determines the ascending HARQ timing relationship under service traffics self adaptation state.
Step 2:UE receives the signaling of eNBA, obtains actual TDD uplink-downlink configuration, and according to the TDD uplink-downlink configuration of the ascending HARQ timing relationship under service traffics self adaptation state and reality, determines ascending HARQ process breakpoint.
Step 3: for each PUSCH transmission, UE detects corresponding PHICH and/or uplink authorization.
Step 4: first available upstream subframe corresponding with this PUSCH process after ascending HARQ process breakpoint, retransmits the upstream data of upstream data on subframe n-k or this PUSCH process of new biography according to the testing result on subframe n.
In addition, because channel quality is poor, UE possibly cannot obtain actual TDD uplink-downlink configuration information, thus UE cannot judge ascending HARQ process breakpoint.When needing to consider that UE cannot obtain the situation of actual TDD uplink-downlink configuration information, UE can be made to ignore the PHICH of all instruction flexible sub-frame re-transmission, namely these PHICH channels are not detected, ACK or nack message is reported directly to high level, UE indicates according to the uplink authorization of follow-up eNB, retransmits the PUSCH of corresponding PUSCH or this ascending HARQ process of new biography.Here flexible sub-frame refers to according to descending reference configuration and up reference configuration, the subframe that transmission direction may change.
According to the method for embodiment one to three, in service traffics Adaptable System, when the transmission direction of the re-transmission PUSCH subframe determined according to the sequential of ascending HARQ process is descending, after PUSCH process interrupt, the HARQ procedure of PUSCH still can be carried out, thus avoid ascending HARQ process breakpoint to the impact of ascending HARQ process, achieve effective transmission of upstream data.
When the transmission direction of some subframe is descending, for the PHICH resource that this subframe is reserved can not get using.As previously mentioned, because lowest version UE and supporting business adaptive-flow UE coexists, PHICH resource cannot discharge and map as PDCCH resource.According to prior art, SIB1 signaling can notify UE TDD uplink-downlink configuration, lowest version UE is just according to these uplink-downlink configuration determination uplink and downlink HARQ timing, and when the PUSCH that UL Grant in subframe n dispatches is positioned at descending sub frame, subframe n can not contain the UL Grant of lowest version UE.In like manner, if the HARQ-ACK of PDSCH feeds back in the up channel of subframe n+k in subframe n, when subframe n+k is descending sub frame, subframe n can not contain the PDSCH of lowest version UE, and then just can not containing the descending allowance (DL Grant) of dispatching lowest version UE PDSCH in the PDCCH of subframe n.In some cases, adopt in the adaptive community of service traffics and may there is no lowest version UE, at this moment in descending sub frame PDCCH, also can not contain UL Grant and the DL Grant of lowest version UE.
The application proposes as the DL Grant not containing lowest version UE in subframe and UL Grant, and when the PHICH resource in these subframes is not used as transmitting HARQ-ACK, the PHICH resource in these subframes can be used as PDCCH resource.PCFICH(Physical Control Format Indicator channel by high-level signaling or physical layer) notify that whether UE subframe is containing PHICH resource.
Corresponding to said method, present invention also provides corresponding equipment.Fig. 4 is the composition structural representation of the better equipment of the application one, and this equipment comprises the first module, the second module and the 3rd module, wherein:
Described first module, for receiving the signaling of eNB, determining the ascending HARQ timing relationship under service traffics self adaptation state and actual TDD uplink-downlink configuration, and determining ascending HARQ process breakpoint accordingly;
For the PUSCH transmission on subframe n-k, if according to the ascending HARQ timing relationship under service traffics self adaptation state, the PHICH that described PUSCH is corresponding transmits on subframe n, and the subframe n+j that described PUSCH transmits place is ascending HARQ process breakpoint next time, then the second module skips the detection of PHICH on subframe n and uplink authorization, or, the PHICH on the second module detection subframe n and/or uplink authorization;
Described 3rd module, for the instruction according to eNB, retransmits the PUSCH of ascending HARQ process described in PUSCH on subframe n-k or new biography in the actual uplink subframe that follow-up and described ascending HARQ process is corresponding.
Corresponding to method described in embodiment one:
Described first module, for receiving the signaling of eNB, determining the ascending HARQ timing relationship under service traffics self adaptation state and actual TDD uplink-downlink configuration, and determining ascending HARQ process breakpoint;
For the PUSCH transmission on subframe n-k, if according to the ascending HARQ timing relationship under service traffics self adaptation state, the PHICH that described PUSCH is corresponding transmits on subframe n, and the subframe n+j that described PUSCH transmits place is ascending HARQ process breakpoint next time, then described second module skips the detection of PHICH on subframe n and uplink authorization, and reports ACK to high level;
Described 3rd module, indicates for the uplink authorization according to eNB, retransmits the PUSCH of ascending HARQ process described in PUSCH on subframe n-k or new biography in the actual uplink subframe that follow-up and described ascending HARQ process is corresponding.
Corresponding to method described in embodiment two:
Described first module, for receiving the signaling of eNB, determining the ascending HARQ timing relationship under service traffics self adaptation state and actual TDD uplink-downlink configuration, and determining ascending HARQ process breakpoint;
For the PUSCH transmission on subframe n-k, if according to the ascending HARQ timing relationship under service traffics self adaptation state, the PHICH that described PUSCH is corresponding transmits on subframe n, and the subframe n+j that described PUSCH transmits place is ascending HARQ process breakpoint next time, then described second module skips the detection of PHICH on subframe n and uplink authorization, and reports NACK to high level;
Described 3rd module, for first actual uplink subframe corresponding with described ascending HARQ course after subframe n-k, according to the PHICH for described actual uplink subframe received before and/or uplink authorization, retransmit the PUSCH of ascending HARQ process described in PUSCH on subframe n-k or new biography in described actual uplink subframe.
Corresponding to method described in embodiment three:
Described first module, for receiving the signaling of eNB, determining the ascending HARQ timing relationship under service traffics self adaptation state and actual TDD uplink-downlink configuration, and determining ascending HARQ process breakpoint;
Described second module, for detecting PHICH on subframe n and/or uplink authorization for each PUSCH transmission, and testing result and/or uplink authorization are reported high level by UE physical layer;
Described 3rd module, for first available upstream subframe corresponding with PUSCH process after ascending HARQ process breakpoint, the upstream data of PUSCH process according to the upstream data on the testing result re-transmission subframe n-k on subframe n or new biography.
The foregoing is only the preferred embodiment of the application, not in order to limit the application, within all spirit in the application and principle, any amendment made, equivalent replacements, improvement etc., all should be included within scope that the application protects.
Claims (8)
1. an implementation method for ascending HARQ process, is applicable to service traffics Adaptable System, it is characterized in that, comprising:
A, UE receive the signaling of eNB, determine the ascending HARQ timing relationship under service traffics self adaptation state and actual TDD uplink-downlink configuration, and determine ascending HARQ process breakpoint accordingly;
B, for the PUSCH transmission on subframe n-k, if according to the ascending HARQ timing relationship under service traffics self adaptation state, the PHICH that described PUSCH is corresponding transmits on subframe n, and the subframe n+j that described PUSCH transmits place is ascending HARQ process breakpoint next time, then UE skips the detection of PHICH on subframe n and uplink authorization, or, the PHICH on UE detection subframe n and/or uplink authorization;
C, UE, according to the instruction of eNB, retransmit the PUSCH of ascending HARQ process described in PUSCH on subframe n-k or new biography in the actual uplink subframe that follow-up and described ascending HARQ process is corresponding.
2. method according to claim 1, is characterized in that, in described B:
When UE skips the detection of PHICH on subframe n and uplink authorization, UE physical layer reports ACK or NACK to high level.
3. method according to claim 2, is characterized in that, in described C:
UE indicates according to the uplink authorization instruction of follow-up eNB or PHICH, the PUSCH on re-transmission subframe n-k or the PUSCH of this ascending HARQ process of new biography;
Or, UE is first actual uplink subframe corresponding with described ascending HARQ course after subframe n-k, according to the PHICH for described actual uplink subframe received before and/or uplink authorization, retransmit the PUSCH of ascending HARQ process described in PUSCH on subframe n-k or new biography in described actual uplink subframe.
4. method according to claim 3, is characterized in that, the method comprises further:
After ascending HARQ process breakpoint, the subframe that UE is meeting following condition detects PHICH, if the PHICH instruction detected retransmits, then according to the sequential of ascending HARQ PHICH to PUSCH, using corresponding subframe as described actual uplink subframe, retransmit described PUSCH:
Before the ascending HARQ process breakpoint of described ascending HARQ process, last sub-frame of uplink of described ascending HARQ process there is the PUSCH transmission of UE;
Between described ascending HARQ process breakpoint and the subframe of detected PHICH, there is no the sub-frame of uplink of described ascending HARQ process;
According to the timing relationship of PHICH to PUSCH, the subframe that the PHICH instruction detected retransmits is sub-frame of uplink.
5. method according to claim 1, is characterized in that:
UE in described B is detected to the situation of PHICH on subframe n and/or uplink authorization, described C comprises: first available upstream subframe corresponding with this PUSCH process after ascending HARQ process breakpoint, retransmits the upstream data of upstream data on subframe n-k or this PUSCH process of new biography according to the testing result on subframe n.
6. method according to claim 1, is characterized in that:
If UE cannot obtain actual TDD uplink-downlink configuration, the method comprises further: UE does not detect the PHICH that all instruction flexible sub-frame retransmit, and reports ACK or NACK to high level;
In described C, UE indicates according to the uplink authorization of follow-up eNB, retransmits the PUSCH of ascending HARQ process described in corresponding PUSCH or new biography.
7. ascending HARQ process realize an equipment, be applicable to service traffics Adaptable System, it is characterized in that, comprising: the first module, the second module and the 3rd module, wherein:
Described first module, for receiving the signaling of eNB, determining the ascending HARQ timing relationship under service traffics self adaptation state and actual TDD uplink-downlink configuration, and determining ascending HARQ process breakpoint accordingly;
For the PUSCH transmission on subframe n-k, if according to the ascending HARQ timing relationship under service traffics self adaptation state, the PHICH that described PUSCH is corresponding transmits on subframe n, and the subframe n+j that described PUSCH transmits place is ascending HARQ process breakpoint next time, then the second module skips the detection of PHICH on subframe n and uplink authorization, or, the PHICH on the second module detection subframe n and/or uplink authorization;
Described 3rd module, for the instruction according to eNB, retransmits the PUSCH of ascending HARQ process described in PUSCH on subframe n-k or new biography in the actual uplink subframe that follow-up and described ascending HARQ process is corresponding.
8. an implementation method for ascending HARQ process, is applicable to service traffics Adaptable System, it is characterized in that, comprising:
As the DL Grant not containing lowest version UE in subframe and UL Grant, and the PHICH resource in described subframe is not when being used as transmitting HARQ-ACK, PHICH resource in described subframe can be used as PDCCH resource, by the PCFICH of high-level signaling or physical layer, UE knows that whether subframe is containing PHICH resource; Wherein, described lowest version UE is the UE not supporting this method.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310533454.0A CN104601301A (en) | 2013-10-31 | 2013-10-31 | Method and equipment for implanting uplink HARQ (Hybrid Automatic Repeat Request) process in service flow adaptive system |
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| CN201310533454.0A CN104601301A (en) | 2013-10-31 | 2013-10-31 | Method and equipment for implanting uplink HARQ (Hybrid Automatic Repeat Request) process in service flow adaptive system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107027180A (en) * | 2016-02-02 | 2017-08-08 | 中兴通讯股份有限公司 | The sending method and terminal of unauthorized carrier wave upstream data |
| CN107135051A (en) * | 2016-02-29 | 2017-09-05 | 中国移动通信集团公司 | A kind of method, apparatus and system of uplink data retransmission |
| WO2021022422A1 (en) * | 2019-08-02 | 2021-02-11 | Nokia Shanghai Bell Co., Ltd. | Transmission of high layer ack/nack |
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2013
- 2013-10-31 CN CN201310533454.0A patent/CN104601301A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107027180A (en) * | 2016-02-02 | 2017-08-08 | 中兴通讯股份有限公司 | The sending method and terminal of unauthorized carrier wave upstream data |
| WO2017133285A1 (en) * | 2016-02-02 | 2017-08-10 | 中兴通讯股份有限公司 | Method for sending unlicensed carrier uplink data, and terminal |
| CN107027180B (en) * | 2016-02-02 | 2019-08-30 | 中兴通讯股份有限公司 | The sending method and terminal of unauthorized carrier wave upstream data |
| CN107135051A (en) * | 2016-02-29 | 2017-09-05 | 中国移动通信集团公司 | A kind of method, apparatus and system of uplink data retransmission |
| WO2021022422A1 (en) * | 2019-08-02 | 2021-02-11 | Nokia Shanghai Bell Co., Ltd. | Transmission of high layer ack/nack |
| CN114223159A (en) * | 2019-08-02 | 2022-03-22 | 上海诺基亚贝尔股份有限公司 | Transmission of higher layer ACK/NACK |
| CN114223159B (en) * | 2019-08-02 | 2024-04-05 | 上海诺基亚贝尔股份有限公司 | Transmission of high-level ACK/NACK |
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Application publication date: 20150506 |