CN103384192A - Method for maintaining transmission continuity of uplink HARQ process in dynamic TDD system - Google Patents

Method for maintaining transmission continuity of uplink HARQ process in dynamic TDD system Download PDF

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CN103384192A
CN103384192A CN 201210134973 CN201210134973A CN103384192A CN 103384192 A CN103384192 A CN 103384192A CN 201210134973 CN201210134973 CN 201210134973 CN 201210134973 A CN201210134973 A CN 201210134973A CN 103384192 A CN103384192 A CN 103384192A
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pusch
grant
uplink
phich
timing relationship
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张世昌
李迎阳
孙程君
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Beijing Samsung Telecommunications Technology Research Co Ltd
Samsung Electronics Co Ltd
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Beijing Samsung Telecommunications Technology Research Co Ltd
Samsung Electronics Co Ltd
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Priority to CN 201210134973 priority Critical patent/CN103384192A/en
Priority to PCT/KR2013/003821 priority patent/WO2013165199A1/en
Priority to KR1020130049460A priority patent/KR20130123331A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1822—Automatic repetition systems, e.g. Van Duuren systems involving configuration of automatic repeat request [ARQ] with parallel processes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1854—Scheduling and prioritising arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1887—Scheduling and prioritising arrangements

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Abstract

The invention provides a method for maintaining transmission continuity of an uplink HARQ process in a dynamic TDD system. The method for maintaining the transmission continuity of the uplink HARQ process in the dynamic TDD system comprises the steps that the position where a next dispatching command of the uplink HARQ process corresponding to a PUSCH is located is determined after the PUSCH is sent by UE, the uplink dispatching command is detected at the determined position, then retransmission of the uplink HARQ process is processed or transmission of a new uplink HARQ process is processed on corresponding uplink subframes according to the received uplink dispatching command, and the uplink HARQ process before the change of uplink and downlink configuration of TDD is transferred to changed uplink and downlink configuration of the TDD to maintain the transmission continuity of the uplink HARQ process.

Description

Dynamically keep the successional method of transmission of ascending HARQ course in the TDD system
Technical field
The present invention relates to the mobile communication technology field, particularly, the present invention relates to keep in dynamic TDD system the successional method of transmission of ascending HARQ course.
Background technology
Long Term Evolution (LTE, Long Term Evolution) technical support Frequency Division Duplexing (FDD) (FDD, Frequency Division Duplexing) and two kinds of duplex modes of time division duplex (TDD, Time Division Duplexing).Fig. 1 is the frame structure schematic diagram of the TDD system of LTE.The length of each radio frames is 10 milliseconds (ms); the field that to be divided into two length be 5ms; the time slot that it is 0.5ms that each field comprises 8 length and 3 s' special domain; the special domain total length of 3 is 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 of two continuous time slots.
Transmission in the TDD system comprises: by the base station to the transmission (being called descending) of subscriber equipment (UE, User Equipment) with by the transmission (be called up) of UE to the base station.Based on frame structure shown in Figure 1, uplink and downlink share 10 subframes in every 10ms time, and each subframe or configuration to descending, are called sub-frame of uplink with configuration to up subframe to up or configuration, and configuration is called descending sub frame to descending subframe.Support 7 kinds of uplink-downlink configuration in the 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 that comprises 3 special domain.
Figure BDA00001595890400011
Figure BDA00001595890400021
Table 1TDD uplink-downlink configuration table
The TDD support HARQ of the system mechanism of LTE, its basic principle comprises: the base station is that UE distributes ascending resource; UE utilizes ascending resource to send upstream data to the base station; The base station receives upstream data and sends the HARQ indication information to UE, and UE carries out the re-transmission of upstream data according to this indication information.Concrete, UE is by Physical Uplink Shared Channel (PUSCH) carrying upstream data, the base station is by Physical Downlink Control Channel (PDCCH, Physical Downlink Control Channel) the scheduling and controlling information of carrying PUSCH, be uplink authorization (UL Grant), the base station is by physical mixing retransmission indicating chanel (PHICH) carrying HARQ indication information.In said process, determining based on pre-configured timing relationship of the timing position that PUSCH once transmits and follow-up re-transmission timing position, comprise UL Grant to the timing relationship of PUSCH, PHICH to PUSCH timing relationship and PUSCH to the timing relationship of PHICH, hereinafter above-mentioned three timing relationships are collectively referred to as PUSCH synchronous HARQ timing relationship.
At first, the UL Grant in the existing LTE of introduction or PHICH are to the timing relationship of PUSCH.
To the timing relationship of UL Grant to PUSCH, suppose that UE is the subframe index sequence number at descending sub frame n(n, lower same) receive UL Grant, this UL Grant is used for controlling the PUSCH in sub-frame of uplink n+k.Here the value of k defines in table 2.Specifically, concerning TDD uplink-downlink configuration (or being called for short uplink-downlink configuration) 1 ~ 6, the quantity of sub-frame of uplink is less than or equal to descending sub frame (the S frame can be used as descending sub frame), for any descending sub frame n, can pass through a unique k value, configure unique PUSCH synchronous HARQ timing relationship, be reflected in table 2, can not dispatch PUSCH in a descending sub frame, perhaps can only dispatch the PUSCH in a sub-frame of uplink; And concerning TDD uplink-downlink configuration 0, the quantity of sub-frame of uplink is greater than descending sub frame, the PDCCH of each descending sub frame need to dispatch two PUSCH in sub-frame of uplink, for this reason, the k value can not be unique, need to use line index (UL index) technology support at PDCCH and dispatch two PUSCH in sub-frame of uplink, for the different PUSCH of index, use different k values.For example, when UE receives PDCCH at descending sub frame 0, its scheduling be PUSCH in sub-frame of uplink 4 and/or sub-frame of uplink 7; When UE receives PDCCH at descending sub frame 1, its scheduling be PUSCH in sub-frame of uplink 7 and/or sub-frame of uplink 8.
To the timing relationship of PHICH to PUSCH, in existing LTE, for the PUSCH independent allocation in each sub-frame of uplink the PHICH resource set, suppose that UE receives PHICH at descending sub frame n, this PHICH is used to indicate the HARQ-ACK information of the PUSCH on sub-frame of uplink n+j.Here the value of j defines in table 2.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, can pass through a unique j value, configure unique PUSCH synchronous HARQ timing relationship, be reflected in table 2, can not configure the PHICH resource set in a descending sub frame, perhaps can only configure the PHICH resource set of a sub-frame of uplink; Concerning TDD uplink-downlink configuration 0, the quantity of sub-frame of uplink is greater than descending sub frame, and the j value is not unique, but two PHICH resource set have been configured respectively at descending sub frame 0 and 5, be PHICH resource 0 and PHICH resource 1, for different PHICH resources, use different j values.For example, when UE receives PHICH at descending sub frame 0, can trigger the PUSCH in sub-frame of uplink 4 and/or sub-frame of uplink 7.
Table 2UL-Grant/PHICH is to the timing relationship table of PUSCH
Secondly, the PUSCH in the existing LTE of introduction is to the timing relationship of PHICH.
Concerning TDD uplink-downlink configuration 1 ~ 6, when UE received PHICH in descending sub frame n, what this PHICH indicated was the HARQ-ACK information of the PUSCH in sub-frame of uplink n-h, and the value of h is as shown in table 3.
Concerning TDD uplink-downlink configuration 0, owing to having configured two PHICH resources, when receiving PHICH as UE on the PHICH resource 0 in descending sub frame n, this PHICH can be according to the definition of h in table 3, the HARQ-ACK information of the PUSCH in indication sub-frame of uplink n-h.Receive PHICH and work as UE on the PHICH resource 1 of descending sub frame 0 or descending sub frame 5, this PHICH indication is the HARQ-ACK information of the PUSCH transmission in sub-frame of uplink n-6.
Figure BDA00001595890400041
Table 3PUSCH is to the timing relationship table of PHICH
According to the form (table 2 and table 3) of above-mentioned three kinds of timing relationships, the PUSCH synchronous HARQ timing relationship in the time of can determining Cell and adopt a certain specific T DD uplink-downlink configuration, thus realize the synchronous transmission of PUSCH according to this PUSCH synchronous HARQ timing relationship.
And along with the raising of user to the transfer of data rate requirement, people have proposed again enhancing (LTE-A) technology of LTE.In LTE-A, by dynamic TDD technology, namely configure the uplink-downlink configuration of TDD system by physical layer signaling, can make the ratio of current sub-frame of uplink and descending sub frame more meet the ratio of current upstream traffic and downlink traffic, the throughput that is conducive to improve user's up-downgoing peak rate and improves system.
For dynamic TDD system, the TDD uplink-downlink configuration of residential quarter is dynamic change along with the up-downgoing traffic carrying capacity in current area.After the TDD of residential quarter uplink-downlink configuration changes, possibly can't send under new TDD uplink-downlink configuration in the HARQ-ACK of the corresponding PUSCH of some ascending HARQ course under former TDD uplink-downlink configuration indication, in this case, to cause the non-self-adapting of these ascending HARQ courses to retransmit, the uplink throughput of user uplink speed and whole system all can be affected.Therefore, be necessary to propose corresponding effective technical scheme, change re-transmission or the new biography indication of ascending HARQ course afterwards to realize the TDD uplink-downlink configuration, and the transmission of these ascending HARQ courses can be continued.
Summary of the invention
The invention provides the successional method of transmission that keeps ascending HARQ course in a kind of dynamic TDD system, with when dynamically changing the TDD uplink-downlink configuration, guarantee the continuity of ascending HARQ course transmission.
Keep the successional method of transmission of ascending HARQ course in a kind of dynamic TDD provided by the invention system, comprising:
A, subscriber equipment (UE) are sending Physical Uplink Shared Channel (PUSCH) afterwards, determine the position corresponding to the dispatching command next time place of the ascending HARQ course of described PUSCH;
B, UE detect the uplink scheduling order on determined position;
C, UE process the re-transmission of described ascending HARQ course or process the transmission of a new ascending HARQ course on corresponding sub-frame of uplink according to the uplink scheduling order that receives.
Preferably, in described A, determine to comprise corresponding to the position at the dispatching command next time place of the ascending HARQ course of described PUSCH:
UE determines position corresponding to the sub-frame of uplink that transmits the place of the ascending HARQ course of described PUSCH next time according to current PUSCH synchronous HARQ timing relationship;
UE will may occur under all PUSCH synchronous HARQ timing relationships the position as described dispatching command next time place, the position of the uplink scheduling order of described sub-frame of uplink according to the position of described sub-frame of uplink.
Preferably, described uplink scheduling order comprises: Physical HARQ Indicator Channel (PHICH) and/or uplink authorization (UL-Grant);
Described B comprises:
For PHICH, detect PHICH according to current PUSCH synchronous HARQ timing relationship on the corresponding PHICH of described PUSCH position;
For UL-Grant, according to table 4 at subframe N UlNextThe upper detection of-k UL-Grant:
N UlNext 0 1 2 3 4 5 6 7 8 9
k - - 4,6,7 4,7 4,5 - - 4,6,7 4,7 4
Table 4
Wherein, N UlNextBe the described subframe numbers that next time transmits the sub-frame of uplink at place.
The method may further include: if UE is at subframe N UlNextUL-Grant detected on-k, and, determine that according to this UL-Grant change has occured PUSCH synchronous HARQ timing relationship, current PUSCH synchronous HARQ timing relationship is adjusted into the corresponding PUSCH synchronous HARQ of this UL-Grant timing relationship.
Preferably, in described A, determine to comprise corresponding to the position at the dispatching command next time place of the ascending HARQ course of described PUSCH:
UE will may occur under all PUSCH synchronous HARQ timing relationships corresponding to the position as described dispatching command next time place, the position of the uplink scheduling order of described PUSCH according to the position of described PUSCH.
Preferably, described uplink scheduling order comprises: PHICH and/or UL-Grant;
Described B comprises:
For PHICH, detect PHICH according to current PUSCH synchronous HARQ timing relationship on the corresponding PHICH of described PUSCH position;
For UL-Grant, detect UL-Grant according to table 5 on subframe n+k:
n 0 1 2 3 4 5 6 7 8 9
k - - 4,6 7,6 6 - - 4,6 7,6 6
Table 5
Wherein, n is the subframe numbers at described PUSCH place.
Preferably, described uplink scheduling order comprises: PHICH and/or UL-Grant;
Described B comprises:
For PHICH, detect PHICH according to current PUSCH synchronous HARQ timing relationship on the corresponding PHICH of described PUSCH position;
For UL-Grant, detect UL-Grant according to table 6 on subframe n+k:
n 0 1 2 3 4 5 6 7 8 9
k - - 4,6 7,6 6 - - 4 7,6 6
Table 6
Wherein, n is the subframe numbers at described PUSCH place.
Preferably, described uplink scheduling order comprises: PHICH and/or UL-Grant;
Described B comprises:
For PHICH, detect PHICH according to current PUSCH synchronous HARQ timing relationship on the corresponding PHICH of described PUSCH position;
For UL-Grant, detect UL-Grant according to table 7 on subframe n+k:
n 0 1 2 3 4 5 6 7 8 9
k - - 4 7,6 6 - - 4 7,6 6
Table 7
Wherein, n is the subframe numbers at described PUSCH place.
The method may further include: if UE detects UL-Grant on subframe n+k, and, determine that according to this UL-Grant change has occured PUSCH synchronous HARQ timing relationship, current PUSCH synchronous HARQ timing relationship is adjusted into the corresponding PUSCH synchronous HARQ of this UL-Grant timing relationship.
by technique scheme of the present invention as seen, the present invention by UE each send PUSCH after, corresponding to the dispatching command next time of the ascending HARQ course of this PUSCH might detect dispatching command on the position at place, and after receiving the uplink scheduling order, process the re-transmission of this ascending HARQ course or process the transmission of a new ascending HARQ course at corresponding sub-frame of uplink according to the content of uplink scheduling order, thereby, dispatching command for the first time in PUSCH synchronous HARQ timing relationship take ascending HARQ course after conversion is bridge, ascending HARQ course before and after PUSCH synchronous HARQ timing relationship is changed is connected, ascending HARQ course before having realized the TDD uplink-downlink configuration is changed is transitioned into the TDD uplink-downlink configuration after variation, and kept the transmission continuity of ascending HARQ course.
Apply the present invention to can effectively manage the transmission of PUSCH in dynamic TDD system, and, very little to the change of existing system, can not affect the compatibility of system, and realize simple, efficient.
Description of drawings
Fig. 1 is the frame structure schematic diagram of the TDD system of LTE;
Fig. 2 is the schematic flow sheet of the inventive method;
Fig. 3 is the concrete enforcement scene schematic diagram of first example of the embodiment of the present invention one;
Fig. 4 is the concrete enforcement scene schematic diagram of second example of the embodiment of the present invention one;
Fig. 5 is the concrete enforcement scene schematic diagram of first example of the embodiment of the present invention two;
Fig. 6 is the concrete enforcement scene schematic diagram of second example of the embodiment of the present invention two.
Embodiment
For making purpose of the present invention, technical scheme and advantage clearer, referring to the accompanying drawing embodiment that develops simultaneously, the present invention is described in further detail.
The present invention is mainly for dynamic TDD(Dynamic TDD) scene.Under this scene, dynamic change along with the up-downgoing traffic carrying capacity in current area, the TDD uplink-downlink configuration of residential quarter also can change thereupon, in order to guarantee that as far as possible the TDD uplink-downlink configuration changes the continuous of front and back ascending HARQ course, the present invention proposes a kind of successional method of transmission that keeps ascending HARQ course.
the inventive method is mainly that the dispatching command for the first time in the PUSCH synchronous HARQ timing relationship after conversion is bridge take ascending HARQ course, ascending HARQ course before and after PUSCH synchronous HARQ timing relationship is changed is connected, be that UE is after each PUSCH of transmission, all determine in some way the position corresponding to the possible place of the institute of dispatching command next time of the ascending HARQ course of this PUSCH, and detect dispatching command on all possible position, after receiving dispatching command, process the re-transmission of this ascending HARQ course or process the transmission of a new ascending HARQ course at corresponding sub-frame of uplink according to the content of dispatching command, and redefine current PUSCH synchronous HARQ timing relationship, thereby the ascending HARQ course before the TDD uplink-downlink configuration is changed is transitioned into the TDD uplink-downlink configuration after variation, and kept the transmission continuity of ascending HARQ course.As shown in Figure 2, specifically comprise the following steps:
Step 201:UE determines position corresponding to the dispatching command next time place of the ascending HARQ course of this PUSCH according to certain rule after sending PUSCH.
Step 202:UE detects the uplink scheduling order on the position that step 201 is determined.
Step 203:UE processes the re-transmission of this ascending HARQ course or processes the transmission of a new ascending HARQ course on corresponding sub-frame of uplink according to the uplink scheduling order that receives, and where necessary, current PUSCH synchronous HARQ timing relationship is converted to the PUSCH synchronous HARQ timing relationship of eNB the Newest Directive.
The present invention is described in detail below by two specific embodiments.
Embodiment one:
In the present embodiment, UE each send PUSCH after, according to current PUSCH synchronous HARQ timing relationship (below be designated as T c) determine corresponding to this PUSCH ascending HARQ course (below be designated as P c) the sub-frame of uplink that next time transmits the place (below be designated as N UlNext), and will next receive for N UlNextThe uplink scheduling order as P cDispatching command next time.Here, suppose for N in the TDD uplink-downlink configuration after conversion UlNextNot the situation of sub-frame of uplink, carry out respective handling by eNB, that is to say, N involved in the present invention UlNextBe sub-frame of uplink.
Concrete implementation step is as follows:
S110, UE are after sending PUSCH, according to current PUSCH synchronous HARQ timing relationship T cDetermine the ascending HARQ course P corresponding to this PUSCH cThe sub-frame of uplink position N that next time transmits the place UlNext
If P cThat corresponding is the up RTT (Round Trip Time) of 10ms, N UlNextIdentical subframe for next system-frame; If P cThat corresponding is the up RTT of non-10ms, needs first to determine P cAccording to T cCorresponding PHICH and/or the position of UL-Grant are then according to position and the T of PHICH and/or UL-Grant cDetermine N UlNext
If S is 120 N UlNextThe PUSCH synchronous HARQ timing relationship of the system-frame at place is identical with current PUSCH synchronous HARQ timing relationship, and eNB sends PHICH and/or UL-Grant according to the regulation of existing LTE/LTE-A; If N UlNextThe PUSCH synchronous HARQ timing relationship of the system-frame at place is different from current PUSCH synchronous HARQ timing relationship, and eNB need to be according to new PUSCH synchronous HARQ timing relationship (that is: N UlNextThe PUSCH synchronous HARQ timing relationship of the system-frame at place) determine corresponding to N UlNextThe UL-Grant position, and send UL-Grant scheduling N in this UL-Grant position UlNext, and with new PUSCH synchronous HARQ timing relationship notice UE.
Here, eNB need to the operation in execution in step S110 as UE, determines the position N of transmission next time of these ascending HARQ course data UlNextIf P next cAccording to T cCorresponding PHICH position is still descending sub frame, and eNB can be as required and P cReception situation (correct receptions/mistake receive) at this PHICH position transmission PHICH or/and UL-Grant.
ENB can notify the corresponding PUSCH synchronous HARQ of this UL-Grant of UE timing relationship by the descending sub frame position at UL-Grant place and/or the state of some bit in UL-Grant.
S130, UE might occur for N UlNextThe position of uplink scheduling order on detect the uplink scheduling order.
Here, the uplink scheduling order comprises PHICH and/or UL-Grant.Wherein, for PHICH, UE only need to be at P cAccording to T cDetect for P on corresponding PHICH position cPHICH; And for UL-Grant, UE need to be at subframe N UlNext-k detects UL-Grant on the position, wherein k and N UlNextRelation as shown in table 4.Table 4 is the position of UL-Grant may occur under all PUSCH synchronous HARQ timing relationships that are back-calculated to obtain according to table 2.
N UlNext 0 1 2 3 4 5 6 7 8 9
k - - 4,6,7 4,7 4,5 - - 4,6,7 4,7 4
Table 4
The dispatching command that S140, UE basis receives is at N UlNextUpper processing P cRe-transmission, perhaps process the transmission of a new ascending HARQ course.If UE received for N UlNextUL-Grant, and, determine that according to this UL-Grant change has occured PUSCH synchronous HARQ timing relationship, current PUSCH synchronous HARQ timing relationship is adjusted into the corresponding PUSCH synchronous HARQ of this UL-Grant timing relationship; Otherwise PUSCH synchronous HARQ timing relationship remains unchanged.
UE can determine the corresponding PUSCH synchronous HARQ of this UL-Grant timing relationship by the descending sub frame position at the UL-Grant place that detects and/or the state of some bit in UL-Grant.
Referring to Fig. 3 and Fig. 4, lift two concrete examples the embodiment of the present invention one is further elaborated.
First example:
As shown in Figure 3, in this example, the first system frame adopts TDD uplink-downlink configuration 0, and the second system frame adopts TDD uplink-downlink configuration 2.
According to S110, UE can determine according to the PUSCH synchronous HARQ timing relationship of current TDD uplink-downlink configuration 0 send corresponding to the ascending HARQ course of this PUSCH the subframe 7 that the position is the second system frame next time after sending PUSCH on the subframe 4 of the first system frame.
Because eNB need to change the TDD uplink-downlink configuration into configuration 2 at the second system frame, according to the synchronous HARQ of PUSCH shown in table 2 timing relationship, TDD uplink-downlink configuration 2 times, the UL-Grant of scheduling subframe 7 should send in subframe 3, therefore, eNB need to send in the subframe 3 of second system frame the UL-Grant of the subframe 7 of scheduling second system frame, and with new PUSCH synchronous HARQ timing relationship notice UE.
Simultaneously, according to the PUSCH of TDD uplink-downlink configuration 0 timing relationship to PHICH, the PHICH of subframe 4 should send in the subframe 0 of next system-frame, and in this example, subframe 0 in the next system-frame of the first system frame (that is: second system frame) remains descending sub frame, therefore, eNB still can be according to the PUSCH of TDD uplink-downlink configuration 0 timing relationship to PHICH, the PHICH that sends for the subframe 4 of the first system frame in the subframe 0 of second system frame.
According to S130, UE should detect the PHICH for the first system frame subframe 4 on the subframe 0 of second system frame, and detects the UL-Grant for second system frame subframe 7 according to table 4 on subframe 0, subframe 1 and the subframe 3 of second system frame.Because subframe 0 in the second system frame is still descending sub frame, so UE can detect PHICH, simultaneously, if UE correctly receives the UL-Grant on the subframe 3 of second system frame, UE needs to retransmit or process the transmission of a new ascending HARQ course according to the indication of the UL-Grant that receives at the ascending HARQ course of processing on the subframe 7 of second system frame on the first system frame subframe 4, and changes current PUSCH synchronous HARQ timing relationship into the corresponding PUSCH synchronous HARQ of TDD uplink-downlink configuration 2 timing relationship.
Second example:
As shown in Figure 4, in this example, the first system frame adopts TDD uplink-downlink configuration 1, and the second system frame adopts TDD uplink-downlink configuration 0.
According to S110, UE can determine according to the PUSCH synchronous HARQ timing relationship of current TDD uplink-downlink configuration 1 send corresponding to the ascending HARQ course of this PUSCH the subframe 8 that the position is the second system frame next time after sending PUSCH on the subframe 8 of the first system frame.
Because eNB need to change the TDD uplink-downlink configuration into configuration 0 at the second system frame, according to the synchronous HARQ of PUSCH shown in table 2 timing relationship, TDD uplink-downlink configuration 0 time, the UL-Grant of scheduling subframe 8 should send in subframe 1, therefore, eNB need to send in the subframe 1 of second system frame the UL-Grant of the subframe 8 of scheduling second system frame, and with new PUSCH synchronous HARQ timing relationship notice UE.
Simultaneously, according to the PUSCH of TDD uplink-downlink configuration 1 timing relationship to PHICH, the PHICH of subframe 8 should send in the subframe 4 of next system-frame, and in this example, subframe 4 in the next system-frame of the first system frame (that is: second system frame) is sub-frame of uplink, can't send PHICH, therefore, eNB does not send the PHICH for the subframe 8 of the first system frame.
According to S130, UE should detect the PHICH for the first system frame subframe 8 on the subframe 4 of second system frame, and detects the UL-Grant for second system frame subframe 8 according to table 4 on the subframe 4 of second system frame and subframe 1.Because subframe 4 in the second system frame has become sub-frame of uplink, so UE can't detect PHICH, but can UL-Grant be detected on the subframe 1 of second system frame, at this moment, UE needs according to the indication of the UL-Grant that receives in the re-transmission of processing the ascending HARQ course on the first system frame subframe 8 on the subframe 8 of second system frame or processes the transmission of a new ascending HARQ course, and changes current PUSCH synchronous HARQ timing relationship into the corresponding PUSCH synchronous HARQ of TDD uplink-downlink configuration 0 timing relationship.
Embodiment two:
In the present embodiment, UE is after each transmission PUSCH, detect the uplink scheduling order on all possible position, if the uplink scheduling order that detects, and can correspond to this PUSCH according to the determined PUSCH synchronous HARQ of this uplink scheduling order timing relationship, think that this uplink scheduling order is the dispatching command next time of this PUSCH.Concrete steps are as follows:
S210, UE are after sub-frame of uplink n sends PUSCH, according to current PUSCH synchronous HARQ timing relationship T cDetect PHICH on the position of correspondence, and detect UL-Grant on all possible position n+k.
Here, the value of k is relevant with the transmission position n of PUSCH, if keep the PUSCH synchronous HARQ timing relationship of defined all the TDD uplink-downlink configuration of current LTE/LTE-A, so, the relation of n and k is as shown in table 5.Table 5 is the positions that UL-Grant might occur that are back-calculated to obtain according to table 3.
n 0 1 2 3 4 5 6 7 8 9
k - - 4,6 7,6 6 - - 4,6 7,6 6
Table 5
A kind of improvement project is: because the sub-frame of uplink of the existing defined TDD uplink-downlink configuration 2 of LTE/LTE-A is subsets of TDD uplink-downlink configuration 1, and both up RTT (Round Trip Time) are 10ms, so in dynamic TDD, can replace with the PUSCH synchronous HARQ timing relationship of TDD uplink-downlink configuration 1 the PUSCH synchronous HARQ timing relationship of TDD uplink-downlink configuration 2; In like manner, also can replace with the PUSCH synchronous HARQ timing relationship of TDD uplink-downlink configuration 3 the PUSCH synchronous HARQ timing relationship of TDD uplink-downlink configuration 4 and TDD uplink-downlink configuration 5.Therefore, when considering the position of UL-Grant to be detected, can only keep the PUSCH synchronous HARQ timing relationship of the defined TDD uplink- downlink configuration 0,1,3 of current LTE/LTE-A and 6, thereby the relation of n and k is as shown in table 6.For table 5, table 6 has reduced the position of UE detection UL-Grant.
n 0 1 2 3 4 5 6 7 8 9
k - - 4,6 7,6 6 - - 4 7,6 6
Table 6
On the basis of table 6, send the position and can only can further reduce like this position that UE detects UL-Grant in subframe 6 if further limit the scheduling indication of subframe 2, as shown in table 7:
n 0 1 2 3 4 5 6 7 8 9
k - - 4 7,6 6 - - 4 7,6 6
Table 7
If the PUSCH synchronous HARQ timing relationship of the next system-frame of S220 is identical with current PUSCH synchronous HARQ timing relationship, eNB sends PHICH and/or UL-Grant according to the regulation of existing LTE/LTE-A; If the PUSCH synchronous HARQ timing relationship of next system-frame is different from current PUSCH synchronous HARQ timing relationship, eNB need to send UL-Grant according to new PUSCH synchronous HARQ timing relationship on n+k, and with new PUSCH synchronous HARQ timing relationship notice UE.
Here the value of k is determined according to new PUSCH synchronous HARQ timing relationship and table 3 by eNB; ENB can notify the corresponding PUSCH synchronous HARQ of this UL-Grant of UE timing relationship by the descending sub frame position at UL-Grant place and/or the state of some bit in UL-Grant.
If S230 UE is according to T cPUSCH on the subframe n that determines detects PHICH on corresponding PHICH position, or according to T cPUSCH on the subframe n that determines detects UL-Grant and indicated PUSCH synchronous HARQ timing relationship and the T of this UL-Grant on corresponding PHICH position cIdentical, the regulation of the behavior of UE and existing LTE/LTE-A is identical.
If UE detects UL-Grant and indicated PUSCH synchronous HARQ timing relationship and the T of this UL-Grant on subframe n+k cDifferent, UE should process the re-transmission of the ascending HARQ course on subframe n or process the transmission of a new ascending HARQ course according to the content of UL-Grant and new PUSCH synchronous HARQ timing relationship on corresponding sub-frame of uplink, and current PUSCH synchronous HARQ timing relationship is adjusted into the PUSCH synchronous HARQ timing relationship of UL-Grant indicating.
Referring to Fig. 5 and Fig. 6, lift two concrete examples the embodiment of the present invention two is further elaborated.
First example:
As shown in Figure 5, in this example, the first system frame adopts TDD uplink-downlink configuration 0, and the second system frame adopts TDD uplink-downlink configuration 3.
According to S210, UE is after sending PUSCH on the subframe 4 of the first system frame, detect PHICH according to the PUSCH synchronous HARQ timing relationship of current TDD uplink-downlink configuration 0 on the subframe 0 of second system frame, and according to table 5, table 6 or table 7 detect UL-Grant on the subframe 0 of second system frame.
Because eNB need to change the TDD uplink-downlink configuration into configuration 3 at the second system frame, according to the synchronous HARQ of PUSCH shown in table 2 timing relationship, TDD uplink-downlink configuration 3 times, the UL-Grant of scheduling subframe 4 should send in subframe 0, therefore, eNB need to send in the subframe 0 of second system frame the UL-Grant of scheduling second system frame subframe 4, and with new PUSCH synchronous HARQ timing relationship notice UE.
According to S230, UE detects UL-Grant on subframe 0 after, should be according to the content of UL-Grant in the re-transmission of processing the ascending HARQ course on the first system frame subframe 4 on the subframe 4 of second system frame or process the transmission of a new ascending HARQ course, and change current PUSCH synchronous HARQ process into the corresponding PUSCH synchronous HARQ of TDD uplink-downlink configuration 3 process.
Second example:
As shown in Figure 6, in this example, the first system frame adopts TDD uplink-downlink configuration 1, and the second system frame adopts TDD uplink-downlink configuration 0.
According to S210, UE is after sending PUSCH on the subframe 8 of the first system frame, detect PHICH according to the PUSCH synchronous HARQ timing relationship of current TDD uplink-downlink configuration 1 on the subframe 4 of second system frame, and according to table 5, table 6 or table 7 detect UL-Grant on the subframe 4 of second system frame and subframe 5.
Because eNB need to change the TDD uplink-downlink configuration into configuration 0 at the second system frame, according to the synchronous HARQ of PUSCH shown in table 2 timing relationship, TDD uplink-downlink configuration 0 time, the UL-Grant of scheduling subframe 9 should send in subframe 5, therefore, eNB need to send in the subframe 5 of second system frame the UL-Grant of scheduling second system frame subframe 9, and with new PUSCH synchronous HARQ timing relationship notice UE.
According to S230, UE detects UL-Grant on subframe 5 after, should be according to the content of UL-Grant in the re-transmission of processing the ascending HARQ course on the first system frame subframe 8 on the subframe 9 of second system frame or process the transmission of a new ascending HARQ course, and change current PUSCH synchronous HARQ process into the corresponding PUSCH synchronous HARQ of TDD uplink-downlink configuration 0 process.
Those skilled in the art are appreciated that and realize above-described embodiment.The all or part of step that method is carried is to come the relevant hardware of instruction to complete by program, and described program can be stored in a kind of computer-readable recording medium, and this program comprises step of embodiment of the method one or a combination set of when carrying out.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing module, can be also that the independent physics of unit exists, and also can be integrated in a module two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, also can adopt the form of software function module to realize.If described integrated module realizes with the form of software function module and during as independently production marketing or use, also can be stored in a computer read/write memory medium.
The above-mentioned storage medium of mentioning can be read-only memory, disk or CD etc.
The above is only preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of making, is equal to replacement, improvement etc., within all should being included in the scope of protection of the invention.

Claims (9)

1. keep the successional method of transmission of uplink hybrid automatic repeat request (HARQ) process in a dynamic time division duplex (TDD) system, it is characterized in that, comprising:
A, subscriber equipment (UE) are sending Physical Uplink Shared Channel (PUSCH) afterwards, determine the position corresponding to the dispatching command next time place of the ascending HARQ course of described PUSCH;
B, UE detect the uplink scheduling order on determined position;
C, UE process the re-transmission of described ascending HARQ course or process the transmission of a new ascending HARQ course on corresponding sub-frame of uplink according to the uplink scheduling order that receives.
2. method according to claim 1, is characterized in that, in described A, determines to comprise corresponding to the position at the dispatching command next time place of the ascending HARQ course of described PUSCH:
UE determines position corresponding to the sub-frame of uplink that transmits the place of the ascending HARQ course of described PUSCH next time according to current PUSCH synchronous HARQ timing relationship;
UE will may occur under all PUSCH synchronous HARQ timing relationships the position as described dispatching command next time place, the position of the uplink scheduling order of described sub-frame of uplink according to the position of described sub-frame of uplink.
3. method according to claim 2 is characterized in that:
Described uplink scheduling order comprises: Physical HARQ Indicator Channel (PHICH) and/or uplink authorization (UL-Grant);
Described B comprises:
For PHICH, detect PHICH according to current PUSCH synchronous HARQ timing relationship on the corresponding PHICH of described PUSCH position;
For UL-Grant, according to table 4 at subframe N UlNextThe upper detection of-k UL-Grant:
N UlNext 0 1 2 3 4 5 6 7 8 9 k - - 4,6,7 4,7 4,5 - - 4,6,7 4,7 4
Table 4
Wherein, N UlNextBe the described subframe numbers that next time transmits the sub-frame of uplink at place.
4. method according to claim 3, is characterized in that, the method further comprises:
If UE is at subframe N UlNextUL-Grant detected on-k, and, determine that according to this UL-Grant change has occured PUSCH synchronous HARQ timing relationship, current PUSCH synchronous HARQ timing relationship is adjusted into the corresponding PUSCH synchronous HARQ of this UL-Grant timing relationship.
5. method according to claim 1, is characterized in that, in described A, determines to comprise corresponding to the position at the dispatching command next time place of the ascending HARQ course of described PUSCH:
UE will may occur under all PUSCH synchronous HARQ timing relationships corresponding to the position as described dispatching command next time place, the position of the uplink scheduling order of described PUSCH according to the position of described PUSCH.
6. method according to claim 5 is characterized in that:
Described uplink scheduling order comprises: PHICH and/or UL-Grant;
Described B comprises:
For PHICH, detect PHICH according to current PUSCH synchronous HARQ timing relationship on the corresponding PHICH of described PUSCH position;
For UL-Grant, detect UL-Grant according to table 5 on subframe n+k:
n 0 1 2 3 4 5 6 7 8 9 k - - 4,6 7,6 6 - - 4,6 7,6 6
Table 5
Wherein, n is the subframe numbers at described PUSCH place.
7. method according to claim 5 is characterized in that:
Described uplink scheduling order comprises: PHICH and/or UL-Grant;
Described B comprises:
For PHICH, detect PHICH according to current PUSCH synchronous HARQ timing relationship on the corresponding PHICH of described PUSCH position;
For UL-Grant, detect UL-Grant according to table 6 on subframe n+k:
n 0 1 2 3 4 5 6 7 8 9 k - - 4,6 7,6 6 - - 4 7,6 6
Table 6
Wherein, n is the subframe numbers at described PUSCH place.
8. method according to claim 5 is characterized in that:
Described uplink scheduling order comprises: PHICH and/or UL-Grant;
Described B comprises:
For PHICH, detect PHICH according to current PUSCH synchronous HARQ timing relationship on the corresponding PHICH of described PUSCH position;
For UL-Grant, detect UL-Grant according to table 7 on subframe n+k:
n 0 1 2 3 4 5 6 7 8 9 k - - 4 7,6 6 - - 4 7,6 6
Table 7
Wherein, n is the subframe numbers at described PUSCH place.
9. the described method of according to claim 6 to 8 any one, is characterized in that, the method further comprises:
If UE detects UL-Grant on subframe n+k, and, determine that according to this UL-Grant change has occured PUSCH synchronous HARQ timing relationship, current PUSCH synchronous HARQ timing relationship is adjusted into the corresponding PUSCH synchronous HARQ of this UL-Grant timing relationship.
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WO2018010497A1 (en) * 2016-07-15 2018-01-18 深圳市金立通信设备有限公司 Method for processing hybrid automatic repeat request process, device and communications system
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WO2018010497A1 (en) * 2016-07-15 2018-01-18 深圳市金立通信设备有限公司 Method for processing hybrid automatic repeat request process, device and communications system
CN108200649A (en) * 2016-12-08 2018-06-22 华为技术有限公司 A kind of information transferring method and its network element
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WO2020062302A1 (en) * 2018-09-30 2020-04-02 Oppo广东移动通信有限公司 Hybrid automatic repeat request processing method, terminal device and storage medium

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