CN104104483A - Physical uplink sharing channel transmission method, uplink scheduling method and device - Google Patents
Physical uplink sharing channel transmission method, uplink scheduling method and device Download PDFInfo
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Abstract
The invention discloses a physical uplink sharing channel transmission method comprising steps of retaining a fixed UL-Grant area in a downlink in the process of the TDD uplink-downlink configuration which is dynamically changing and receiving uplink scheduling orders and transmitting PUSCH by UE according to a PUSCH synchronization HARQ timing relationship of a 10ms RTT. The invention solves the conversion problem of the PUSCH synchronizing HARQ timing relationship on the TDD uplink and downlink configuration conversion point in the process of the TDD dynamically resetting the configuration and solves the problem that the HARQ progress delay of the PUSCH is increased which is caused by the backward UE. Besides, the above scheme that the invention puts forward has a small alteration on the present system, which doesn't affect the compatibility of the system, and realizes the simplicity and high efficiency.
Description
Technical field
The application relates to mobile communication technology field, and particularly, the application relates to the transmission method of Physical Uplink Shared Channel, the method and apparatus of uplink scheduling.
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); be divided into the field that two length are 5ms; each field comprises time slot and 3 special domain that 8 length are 0.5ms; 3 special domain total lengths 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 consists of two continuous time slots.
Transmission in TDD system comprises: by base station to the transmission (being called descending) of subscriber equipment (UE, User Equipment) and the transmission (being called up) to base station by UE.Frame structure based on shown in Fig. 1, uplink and downlink share 10 subframes in every 10ms time, and each subframe or configuration to descending, are called sub-frame of uplink by configuration to up subframe to up or configuration, and configuration is called to descending sub frame to descending subframe.In TDD system, support 7 kinds of uplink-downlink configuration, 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.
Table 1TDD uplink-downlink configuration table
The TDD system of LTE is supported HARQ mechanism, and its basic principle comprises: base station is that UE distributes ascending resource; UE utilizes ascending resource to send upstream data to base station; Base station receives upstream data and sends HARQ indication information to UE, and UE carries out the re-transmission of upstream data according to this indication information.Concrete, UE carries upstream data by PUSCH, 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), base station is by physical mixing retransmission indicating chanel (PHICH) carrying HARQ indication information.In said process, the timing position that PUSCH once transmits and follow-up re-transmission timing position determine the timing relationship based on pre-configured, comprise that UL Grant is to the timing relationship of PUSCH, PHICH is to the timing relationship of PUSCH, with the timing relationship of PUSCH to PHICH, hereinafter above-mentioned three timing relationships are collectively referred to as to the synchronous HARQ timing relationship of PUSCH.
First, introduce UL Grant in LTE and LTE-A or PHICH to the timing relationship of PUSCH.
Timing relationship to UL Grant to PUSCH, supposes that UE is subframe index sequence number at descending sub frame n(n, lower same) receive UL Grant, this UL Grant is 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 (S frame can be used as descending sub frame), for any descending sub frame n, can configure the synchronous HARQ timing relationship of unique PUSCH by a unique k value, be reflected in table 2, in a descending sub frame, PUSCH can be do not dispatched, or a PUSCH in sub-frame of uplink can only be dispatched; 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, 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 the 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 the PUSCH in sub-frame of uplink 7 and/or sub-frame of uplink 8.
To PHICH to the timing relationship of PUSCH, in LTE and LTE-A, for the PUSCH independent allocation in each sub-frame of uplink PHICH resource set, suppose that UE receives PHICH at descending sub frame n, this PHICH is used for controlling the PUSCH in 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 configure the synchronous HARQ timing relationship of unique PUSCH by a unique j value, be reflected in table 2, in a descending sub frame, PHICH resource set can be do not configured, or the PHICH resource set 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, and 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, introduce PUSCH in LTE and LTE-A to the timing relationship of PHICH.
Concerning TDD uplink-downlink configuration 1～6, when UE receives PHICH in descending sub frame n, what this PHICH indicated is 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, while receiving PHICH in the PHICH resource 0 of UE in descending sub frame n, this PHICH can be according to the HARQ-ACK information of the PUSCH in the definition indication sub-frame of uplink n-h of h in table 3; And work as UE, receive PHICH in the PHICH resource 1 of descending sub frame 0 or descending sub frame 5, this PHICH is the HARQ-ACK information of the PUSCH in indication sub-frame of uplink n-6.
Table 3PUSCH is to the timing relationship table of PHICH
According to the form of above-mentioned three kinds of timing relationships (table 2 and table 3), the synchronous HARQ timed-shutoff of PUSCH in the time of can determining community (Cell) and adopt a certain specific T DD uplink-downlink configuration, thus according to the synchronous HARQ timing relationship of this PUSCH, realize the synchronous transmission of PUSCH.
And along with the raising of user to transfer of data rate requirement, people have proposed again enhancing (LTE-A) technology of LTE.In LTE-A, by flexible TDD reconfiguration technology, by physical layer signaling, configure the uplink-downlink configuration of TDD system, 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 flexible TDD reconfiguration system, the TDD uplink-downlink configuration of community is dynamic change along with the up-downgoing traffic carrying capacity in current area.And according to the agreement regulation of existing LTE and LTE-A, UE is the TDD uplink-downlink configuration that the system message by broadcasting in community obtains this community, then take TDD uplink-downlink configuration as index, according to table 2 and table 3, obtain the synchronous HARQ timing relationship of PUSCH.
But reshuffle in community at flexible TDD, two TDD uplink-downlink configuration will be there are: the TDD uplink-downlink configuration (being called for short SIB uplink-downlink configuration below) of system message broadcast and the TDD uplink-downlink configuration (being called for short in fact downstream arrangements below) of real work, in community, do not support that backward UE that flexible TDD reshuffles will be according to the work of SIB uplink-downlink configuration, and support that the UE that flexible TDD reshuffles will be according in fact downstream arrangements work.If the SIB uplink-downlink configuration of community is the PUSCH RTT(Round Trip Time of non-10ms) uplink-downlink configuration, and sub-frame of uplink number in the in fact downstream arrangements of community far fewer than SIB uplink-downlink configuration (if SIB uplink-downlink configuration is TDD uplink-downlink configuration #0, and in fact downstream arrangements is TDD uplink-downlink configuration #2), in community, the HARQ process of the up PUSCH of backward UE can cannot be transmitted owing to being scheduled on descending sub frame, the HARQ process of the up PUSCH of these UE time postpone a meeting or conference and greatly increase.
In addition, when the TDD of community uplink-downlink configuration changes fast, if still obtain the synchronous HARQ timing relationship of PUSCH by actual TDD uplink-downlink configuration, on the transfer point of conversion TDD uplink-downlink configuration, can introduce the transfer problem of PUSCH synchronous HARQ timing relationship, while particularly there is the uplink-downlink configuration of PUSCH RTT of the non-10ms such as TDD uplink-downlink configuration #0 and TDD uplink-downlink configuration #6.
In addition, the variation that the variation of TDD uplink-downlink configuration must cause sub-frame of uplink to distribute, at this moment how by the HARQ process of PUSCH, the TDD uplink-downlink configuration from changing is transitioned into the TDD uplink-downlink configuration after variation, is also one and is badly in need of the technical problem solving.
Obviously, the system of reshuffling for flexible TDD, the synchronous HARQ transmission of PUSCH exists problems to need to solve, and is necessary to propose corresponding effective technical scheme, to solve the uplink scheduling problem of flexible TDD reconfiguration system.
Summary of the invention
The application's object is intended at least solve one of above-mentioned technological deficiency, a kind of transmission method, uplink dispatch method and equipment of the Physical Uplink Shared Channel in flexible TDD reconfiguration system are particularly provided, effectively to manage the transmission of PUSCH in TDD reconfiguration system flexibly.
The transmission method of a kind of Physical Uplink Shared Channel that the application provides, comprising:
At flexible TDD, reshuffle in community, UE receives uplink scheduling order according to the PUSCH synchronous HARQ timing relationship of a kind of 10 milliseconds of round-trip delays (RTT) in fixing UL-Grant region, and sends PUSCH according to the PUSCH synchronous HARQ timing relationship of described 10 milliseconds of RTT.
Preferably, described UE according to the PUSCH synchronous HARQ timing relationship of a kind of 10 milliseconds of RTT in fixing UL-Grant region reception uplink scheduling order is:
UE receives the system message of eNB, obtain flexible TDD and reshuffle the current SIB uplink-downlink configuration in community and MBSFN subframe configuration information, described MBSFN subframe configuration information is configured to MBSFN subframe by the descending sub frame of appointment in each radio frames under current SIB uplink-downlink configuration; Described SIB uplink-downlink configuration comprises: TDD uplink-downlink configuration #1, configuration #2, configuration #3, configuration #4 and configuration #5;
UE detects UL-Grant, PHICH or ePHICH in the UL-Grant region of the subframe n of each radio frames, wherein n ∈ 0, Isosorbide-5-Nitrae, 5,6,9}; Wherein, in the subframe n of each radio frames the position in UL-Grant region and this subframe whether to be configured to MBSFN subframe relevant;
The described PUSCH synchronous HARQ timing relationship according to described 10 milliseconds of RTT sends PUSCH and comprises:
If UE detects UL-Grant or triggers PHICH or the ePHICH that non-self-adapting retransmits on subframe n, according to table 4, if n+k≤9, the subframe n+k in this radio frames sends the PUSCH being scheduled, otherwise, at subframe (n+k) mod10 of next radio frames, send the PUSCH being scheduled:
Table 4
| Subframe index n | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| k | 4 | 6 | ? | ? | 4 | 4 | 6 | ? | ? | 4 |
。
Preferably, the method further comprises:
If UE has sent PUSCH on subframe n+k or subframe (n+k) mod10, according to table 5, in the UL-Grant region of subframe (n+k+l) mod10 of the next radio frames of uplink scheduling order place radio frames, detect PHICH or the ePHICH for sent PUSCH:
Table 5
| Subframe index n | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| l | ? | ? | 4 | 6 | 6 | ? | ? | 4 | 6 | 6 |
。
Preferably, described UE at the UL-Grant region of the subframe n of each radio frames detection UL-Grant, PHICH or ePHICH is:
If { 0,1,5,6} or described subframe n are not configured to MBSFN subframe to described subframe n ∈, and UE detects UL-Grant, PHICH or ePHICH at the PDCCH of subframe n symbol area and ePDCCH region;
If described subframe n is configured to MBSFN subframe, UE detects UL-Grant, PHICH or ePHICH in the non-MBSFN region of subframe n.
Preferably, the PUSCH that described transmission is scheduled comprises:
If send the subframe of the PUSCH being scheduled, be configured to MBSFN subframe, the PUSCH in this subframe takies last Ns-p-g single-carrier frequency division multiple access (SC-FDMA) symbol of this subframe, wherein:
When the MBSFN region of this subframe is down direction, Ns is the OFDM symbolic number in this subframe, when the MBSFN region of this subframe is up direction, the symbolic number that the OFDM symbolic number that Ns is the non-MBSFN region in this subframe, protection interval take and be transformed to the SC-FDMA symbolic number sum in up MBSFN region;
The symbolic number that p takies for the interior non-MBSFN of this subframe region;
G is that last PDCCH symbol is to the protection interval between first PUSCH symbol.
A kind of uplink dispatch method that the application provides, comprising:
At flexible TDD, reshuffle in community, eNB sends uplink scheduling order according to the PUSCH synchronous HARQ timing relationship of a kind of 10 milliseconds of round-trip delays (RTT) in fixing UL-Grant region, and receives according to the PUSCH synchronous HARQ timing relationship of described 10 milliseconds of RTT the PUSCH being scheduled.
The application also provides a kind of subscriber equipment, is applied to flexible TDD and reshuffles community, comprising: detection module and sending module, wherein:
Described detection module, receives uplink scheduling order for the PUSCH synchronous HARQ timing relationship according to a kind of 10 milliseconds of round-trip delays (RTT) in fixing UL-Grant region;
Described sending module, for sending PUSCH according to the PUSCH synchronous HARQ timing relationship of described 10 milliseconds of RTT.
Preferably, described detection module, for receiving the system message of eNB, obtain flexible TDD and reshuffle the current SIB uplink-downlink configuration in community and MBSFN subframe configuration information, described MBSFN subframe configuration information is configured to MBSFN subframe by the descending sub frame of appointment in each radio frames under current SIB uplink-downlink configuration; And for the UL-Grant region of the subframe n in each radio frames, detect UL-Grant, PHICH or ePHICH, wherein n ∈ 0, Isosorbide-5-Nitrae, 5,6,9}; Wherein, in the subframe n of each radio frames the position in UL-Grant region and this subframe whether to be configured to MBSFN subframe relevant;
When detection module detects UL-Grant or triggers PHICH that non-self-adapting retransmits or during ePHICH on subframe n, described sending module, for judging according to table 4 whether n+k is less than or equal to 9, if, the subframe n+k in this radio frames sends the PUSCH being scheduled, otherwise, at subframe (n+k) mod10 of next radio frames, send the PUSCH being scheduled:
Table 4
| Subframe index n | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| k | 4 | 6 | ? | ? | 4 | 4 | 6 | ? | ? | 4 |
。
Preferably, described detection module, is further used in the UL-Grant region of subframe (n+k+l) mod10 of the next radio frames of uplink scheduling order place radio frames, detecting PHICH or the ePHICH for sent PUSCH according to table 5:
Table 5
| Subframe index n | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| l | ? | ? | 4 | 6 | 6 | ? | ? | 4 | 6 | 6 |
。
Preferably, if { 0,1,5,6} or described subframe n are not configured to MBSFN subframe to described subframe n ∈, and described detection module detects UL-Grant, PHICH or ePHICH at the PDCCH of subframe n symbol area and ePDCCH region;
If described subframe n is configured to MBSFN subframe, described detection module detects UL-Grant, PHICH or ePHICH in the non-MBSFN region of subframe n.
The technical scheme that the application proposes, can in TDD reconfiguration system, effectively manage the transmission of PUSCH flexibly, the PUSCH synchronous HARQ timing relationship of UE can not be subject to the impact of uplink-downlink configuration, has avoided the transfer problem of PUSCH synchronous HARQ timing relationship in TDD uplink-downlink configuration position of conversion point; And to UE, be operated under the PUSCH synchronous HARQ timing relationship of 10ms RTT after can making when guaranteeing sub-frame of uplink ratio, avoid the problem of backward UE HARQ process delay increase of PUSCH in flexible TDD reshuffles community, with very little system, changed the PUSCH scheduling having realized in flexible TDD reconfiguration system.In addition, the such scheme that the application proposes, very little to the change of existing system, can not affect the compatibility of system, and realize simple, efficient.
Accompanying drawing explanation
Fig. 1 is the frame structure schematic diagram of the TDD system of LTE;
Fig. 2 is the method flow diagram of the eNB side uplink scheduling that proposes of the application;
Fig. 3 is that in the application one embodiment, MBSFN region is transformed to up flexible descending sub frame schematic diagram;
Fig. 4 is the transmission method flow chart of the UE side PUSCH that proposes of the application;
Fig. 5 is the composition structural representation of the application's one better subscriber equipment.
Embodiment
For making the application's object, technical scheme and advantage clearer, referring to the accompanying drawing embodiment that develops simultaneously, the application is described in further detail.
The application reshuffles scene mainly for flexible TDD.Under this scene, dynamic change along with the up-downgoing traffic carrying capacity in current area, the TDD uplink-downlink configuration of community also can change thereupon, and then cause the propagation delay time of the HARQ process of the up PUSCH of backward UE to increase, support the UE that flexible TDD reshuffles to have a strong impact on systematic function in the linking of the HARQ process of the TDD uplink-downlink configuration transfer point PUSCH of place and the problems such as transition of PUSCH synchronous HARQ timing relationship.
In order to address the above problem, the application has proposed the dispatching method that a kind of flexible TDD reshuffles up PUSCH under scene, in the TDD uplink-downlink configuration dynamic changing process of its principle Shi community, UE only receives uplink scheduling order according to the PUSCH synchronous HARQ timing relationship of a kind of 10ms RTT in fixing UL-Grant region, and send PUSCH according to the PUSCH synchronous HARQ timing relationship of this 10ms RTT, wherein, described fixing UL-Grant region constant is descending, and this region is used for sending UL-Grant, PHICH or ePHICH.
In order to realize the application's object, the embodiment of the present application has proposed a kind of method of uplink scheduling as shown in Figure 2, and the method is applicable to base station side, comprises the following steps:
Step 210:eNB(refers to that flexible TDD reshuffles eNB under community, lower same) by current SIB uplink-downlink configuration and the MBSFN subframe configuration information in system message broadcast cell.
The application proposes: the corresponding PUSCH RTT of SIB uplink-downlink configuration can only be 10ms, and therefore, the SIB uplink-downlink configuration in the application comprises: the TDD uplink-downlink configuration #1 of existing 3GPP normalized definition, configuration #2, configuration #3, configuration #4 or configuration #5.
MBSFN subframe configuration information is for being configured to MBSFN subframe by some descending sub frame of each radio frames under current SIB uplink-downlink configuration.After descending sub frame is configured to MBSFN subframe, its MBSFN region can flexible transformation transmission direction.
So far, under any SIB uplink-downlink configuration, the subframe in each radio frames is divided into Four types:
Fixing descending sub frame: refer to not allow to convert the descending sub frame of transmission direction, comprise subframe #0, subframe #1, subframe #5, subframe #6 and be not configured to the descending sub frame of MBSFN subframe;
Fixing sub-frame of uplink: refer to not allow to convert the sub-frame of uplink of transmission direction, at least comprise subframe #2;
Flexible sub-frame: the sub-frame of uplink that comprises all permission conversion transmission directions;
Flexible descending sub frame: refer in SIB uplink-downlink configuration, except subframe #0, subframe #1, subframe #5 and subframe #6, to be configured to the descending sub frame of MBSFN subframe.
Step 220:eNB sends UL-Grant, PHICH or ePHICH in the UL-Grant region of subframe n, wherein n ∈ 0, Isosorbide-5-Nitrae, 5,6,9}.
The application by the circumscription of n 0, Isosorbide-5-Nitrae, 5,6,9}, has guaranteed that sub-frame of uplink all under any TDD uplink-downlink configuration can both be scheduled.
The type of subframe n is depended in the position in UL-Grant region, if subframe n is fixing descending sub frame, UL-Grant region is in the PDCCH of this subframe symbol area and ePDCCH region; If subframe n is flexible descending sub frame, UL-Grant region is in the non-MBSFN region of this subframe.
If at eIMTA(Further Enhancements to LTE TDD for DL-UL Interference Management and Traffic Adaptation) in newly defined ePHICH, ePHICH can only send in ePDCCH region.
Step 230:eNB receives at subframe n+k or subframe (n+k) mod10 the PUSCH being scheduled.
For TDD uplink-downlink configuration #1, configuration #2, configuration #3, configuration #4 and the configuration #5 of current 3GPP standard definition, the value of k is as shown in table 4.According to table 4, if n+k≤9, the subframe n+k in this radio frames receives the PUSCH being scheduled, otherwise, at subframe (n+k) mod10 of next radio frames, receive the PUSCH being scheduled.
Table 4UL-Grant/PHICH/ePHICH is to the timing relationship table of PUSCH
| Subframe index n | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| k | 4 | 6 | ? | ? | 4 | 4 | 6 | ? | ? | 4 |
If be scheduled, the subframe (that is: subframe n+k or subframe (n+k) mod10) of transmission PUSCH is flexible descending sub frame, and the PUSCH in this subframe takies last Ns-p-g SC-FDMA(single-carrier frequency division multiple access of this subframe) symbol, wherein:
Ns is the OFDM/SC-FDMA symbolic number in this subframe; Wherein, when the MBSFN region of flexible descending sub frame is down direction, Ns is the OFDM symbolic number in this subframe, when the MBSFN region of flexible descending sub frame is up direction, the symbolic number that Ns takies for the OFDM symbolic number in the non-MBSFN region in this subframe, protection interval and be transformed to the SC-FDMA symbolic number sum in up MBSFN region;
The symbolic number that p takies for the interior non-MBSFN of this subframe region;
G is that last PDCCH symbol is to the protection interval between first PUSCH symbol.The value of g can be by eNB dynamic-configuration, or by standard definition (such as the GP of special subframe in definition g He Zhe community equates, or g=1).
In normal CP situation (Ns=14), work as p=2, during g=1, MBSFN region be transformed to up direction flexible descending sub frame structure as shown in Figure 3.
In these cases, the SC-FDMA symbolic number taking due to PUSCH is less than normal sub-frame of uplink, thereby it is less to can be used for the RE of PUSCH transmission.The right number of PRB that certain PUSCH is taken, the transmission block size (TBS) that this PUSCH is applicable to transmission also will be less than normal sub-frames.It is similar that the OFDM symbolic number of the special descending sub frame of this and existing standard is less than normal descending sub frame.In order to guarantee the performance of PUSCH transmission, the application further proposes to adjust the TBS of the PUSCH carrying of this subframe.For example, note adjusted value is s, and s is less than 1, if distribute to the number that the PRB of above-mentioned PUSCH is right in uplink scheduling order, is N
pRB, the TBS sequence number of indication is I
tBSfor, with
and I
tBSfor index determines the finally size of the TBS of transmission.
When uplink is carried out in PUSCH region, it can be the brachymemma structure that adopts normal sub-frames structure, last p+g NC-FDMA symbol for example removing normal sub-frame of uplink structure, at this moment eNB should avoid the feedback informations such as ACK/NACK feedback information and CQI/PMI/RI to be configured on flexible descending sub frame and to transmit.This method goes for the frame structure of normal CP, also the available frame structure for long CP.
In addition, if cell uplink is normal CP, when p=g=1, PUSCH takies remaining 12 OFDM symbols, its OFDM symbol numbers is identical with the OFDM number of symbols of long CP subframe structure in existing standard, so a kind of processing method is to transmit PUSCH at PUSCH Regional Gravity And by the sub-frame of uplink structure of the long CP in existing standard.If cell uplink is normal CP, at p=2, during g=1, PUSCH takies remaining 11 OFDM symbols, this with configuration in existing standard in the long CP subframe structure of SRS symbol, to can be used for the OFDM number of symbols of PUSCH transmission identical, so a kind of processing method is to adopt the sub-frame of uplink structural transmission PUSCH of the long CP that has configured SRS symbol in PUSCH region.
Step 240:eNB feeds back PHICH or ePHICH in the UL-Grant region of subframe (n+k+l) mod10 of the next radio frames of uplink scheduling order place radio frames for the described PUSCH being scheduled.
For TDD uplink-downlink configuration #1, configuration #2, configuration #3, configuration #4 and the configuration #5 of current 3GPP standard definition, the value of l is as shown in table 5.If newly defined ePHICH in eIMTA, ePHICH can only send in ePDCCH region.According to table 5, in the UL-Grant region of subframe (n+k+l) mod10 of the next radio frames of uplink scheduling order place radio frames, send PHICH or the ePHICH for the described PUSCH being scheduled.
Table 5PUSCH is to the timing relationship table of PHICH/ePHICH
| Subframe index n | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| l | ? | ? | 4 | 6 | 6 | ? | ? | 4 | 6 | 6 |
Corresponding to method shown in Fig. 2, the embodiment of the present application has also proposed the transmission method of a kind of PUSCH based on end side, as shown in Figure 4, comprises the following steps:
Step 410:UE receives the system message of eNB, obtains flexible TDD and reshuffles the current SIB uplink-downlink configuration in community and MBSFN subframe configuration information.
Step 420:UE detects UL-Grant, PHICH or ePHICH in the UL-Grant region of subframe n, wherein n ∈ 0, Isosorbide-5-Nitrae, 5,6,9}.
The character of subframe n is depended in the position in UL-Grant region, if subframe n is fixing descending sub frame, UL-Grant region is in the PDCCH of this subframe symbol area and ePDCCH region; If subframe n is flexible descending sub frame, UL-Grant region is in the non-MBSFN region of this subframe.
UE only detects ePHICH in ePDCCH region.
Step 430: if UE detects UL-Grant or triggers PHICH or the ePHICH that non-self-adapting retransmits on subframe n, send at subframe n+k or subframe (n+k) mod10 the PUSCH being scheduled.
For TDD uplink-downlink configuration #1, configuration #2, configuration #3, configuration #4 and the configuration #5 of current 3GPP standard definition, the value of k is as shown in table 4.According to table 4, if n+k≤9, the subframe n+k in this radio frames sends the PUSCH being scheduled, otherwise, at subframe (n+k) mod10 of next radio frames, send the PUSCH being scheduled.
If subframe n+k or subframe (n+k) mod10 is flexible descending sub frame; the PUSCH in this subframe takies last Ns-p-g SC-FDMA symbol of this subframe; wherein Ns is the OFDM/SC-FDMA symbolic number in this subframe; p is the symbolic number that in this subframe, non-MBSFN region takies, and g is that last PDCCH symbol is to the protection interval between first PUSCH symbol.The value of g can be by eNB dynamic-configuration, or by standard definition (such as the GP of special subframe in definition g He Zhe community equates, or g=1).
In these cases, the SC-FDMA symbolic number taking due to PUSCH is less than normal sub-frames, in this PUSCH, the bit number of transmission is also by the PUSCH being less than in normal sub-frames, here can, with reference to special descending sub frame transmission block scale adjusting method in existing standard, adjust the size of PUSCH transmission block in this subframe.
Step 440: if UE has sent PUSCH on subframe n+k or subframe (n+k) mod10, UE detects PHICH or the ePHICH for this PUSCH in the UL-Grant region of subframe (n+k+l) mod10 of the next radio frames of uplink scheduling order place radio frames.
For uplink-downlink configuration #1, configuration #2, configuration #3, configuration #4 and the configuration #5 of current 3GPP standard definition, the value of l is as shown in table 5.UE only detects ePHICH in ePDCCH region.According to table 5, in the UL-Grant region of subframe (n+k+l) mod10 of the next radio frames of uplink scheduling order place radio frames, detect PHICH or the ePHICH for sent PUSCH.
The technique scheme that the application proposes, by increasing fixing UL-Grant region, UE only need to receive uplink scheduling order and send PUSCH according to the PUSCH synchronous HARQ timing relationship of a kind of 10ms RTT, when guaranteeing that flexible TDD reshuffles cell uplink number of subframes, solved in flexible TDD reconfiguration course the transfer problem of PUSCH synchronous HARQ timing relationship on uplink-downlink configuration transfer point, and the HARQ process delay of the PUSCH that may cause backward UE increases problem.In addition, the such scheme that the application proposes, very little to the change of existing system, can not affect the compatibility of system, and realize simple, efficient.
For the ease of understanding the application, below in conjunction with concrete applicable cases, the pattern mutual with equipment room is described further specific as follows to the application's technique scheme:
Embodiment mono-:
Suppose that the SIB uplink-downlink configuration that flexible TDD reshuffles community is TDD uplink-downlink configuration #1, be operated in flexible TDD reconfiguration status lower time, the subframe #4 of each radio frames and subframe #9 are configured to MBSFN subframe, so, subframe #4 and subframe #9 are flexible descending sub frame, subframe #3, subframe #7 and subframe #8 are flexible sub-frame, and the uplink dispatch method concrete steps in the present embodiment are as follows:
It is TDD uplink-downlink configuration #1 that S101:eNB broadcasts current SIB uplink-downlink configuration by system message, and by system message, the subframe #4 of each radio frames and subframe #9 is configured to MBSFN subframe.
S102:UE obtains the current SIB uplink-downlink configuration in community and MBSFN subframe configuration information by receiving the system information of eNB transmission.
S103:eNB sends upstream dispatching instructions in the UL-Grant region of subframe n, and upstream dispatching instructions comprises UL-Grant and triggers PHICH or the ePHICH of non-adaptive re-transmission.
Now UL-Grant region comprises PDCCH symbol area and the ePDCCH region of subframe #0, subframe #1, subframe #5 and subframe #6, and the non-MBSFN region of subframe #4 and subframe #9.
S104: if UE detects upstream dispatching instructions at subframe n, the timing relationship between the upstream dispatching instructions defining according to table 4 and the PUSCH being scheduled sends at subframe n+k or subframe (n+k) mod10 the PUSCH being scheduled.
If subframe n+k or subframe (n+k) mod10 is subframe #4 or subframe #9, PUSCH takies last Ns-p-g SC-FDMA symbol in this subframe, and wherein the implication of Ns, p and g is with mentioned above.
S105:eNB receives at subframe n+k or subframe (n+k) mod10 the PUSCH being scheduled.
S106:eNB sends PHICH/ePHICH and/or the UL-Grant of the PUSCH being scheduled in the UL-Grant region of subframe (n+k+l) mod10 of the next radio frames of uplink scheduling order place radio frames, wherein, " PHICH/ePHICH and/or UL-Grant " has following several possible syntagmatic:
1）PHICH；
2）ePHICH；
3) PHICH or UL-Grant;
4) ePHICH or UL-Grant;
5) PHICH and UL-Grant;
6) ePHICH and UL-Grant.
S107:UE receives eNB for the feedback of the PUSCH being scheduled in the UL-Grant region of subframe (n+k+l) mod10 of the next radio frames of uplink scheduling order place radio frames, comprises PHICH/ePHICH and/or UL-Grant.
Embodiment bis-:
Suppose that the SIB uplink-downlink configuration that flexible TDD reshuffles community is TDD uplink-downlink configuration #2, be operated in flexible TDD reconfiguration status lower time, the subframe #3 of each radio frames and subframe #8 are configured to MBSFN subframe, subframe #7 is flexible sub-frame, and the uplink dispatch method concrete steps in the present embodiment are as follows:
It is uplink-downlink configuration #2 that S201:eNB broadcasts current SIB uplink-downlink configuration by system message, and by system message, the subframe #3 of each radio frames and subframe #8 is configured to MBSFN subframe.
S202:UE obtains the current SIB uplink-downlink configuration in community and MBSFN subframe configuration information by receiving the system information of eNB transmission.
S203:eNB sends upstream dispatching instructions UL-Grant, PHICH or ePHICH in the UL-Grant region of subframe n.
Because now subframe #4 and subframe #9 are fixing descending sub frame, according to table 4, without sending dispatch command at subframe #0 and subframe #5, so now UL-Grant region comprises PDCCH symbol area and the ePDCCH region of subframe #1, subframe #4, subframe #6 and subframe #9.
S204: if UE detects upstream dispatching instructions at subframe n, the timing relationship between the upstream dispatching instructions defining according to table 4 and the PUSCH being scheduled sends at subframe n+k or subframe (n+k) mod10 the PUSCH being scheduled.
If subframe n+k or subframe (n+k) mod10 is subframe #3 or subframe #8, PUSCH takies last Ns-p-g SC-FDMA symbol in this subframe, and wherein the implication of Ns, p and g is with mentioned above.
S205:eNB receives at subframe n+k or subframe (n+k) mod10 the PUSCH being scheduled.
S206:eNB sends PHICH/ePHICH and/or the UL-Grant of the PUSCH being scheduled in the UL-Grant region of subframe (n+k+l) mod10 of the next radio frames of uplink scheduling order place radio frames.
S207:UE receives eNB for the feedback of the PUSCH being scheduled in the UL-Grant region of subframe (n+k+l) mod10 of the next radio frames of uplink scheduling order place radio frames, comprises PHICH/ePHICH and/or UL-Grant.
Corresponding to said method, disclosed herein as well is a kind of subscriber equipment, as shown in Figure 5.This subscriber equipment can be applied to flexible TDD and reshuffle community, comprising: detection module and sending module, wherein:
Described detection module, receives uplink scheduling order for the PUSCH synchronous HARQ timing relationship according to a kind of 10 milliseconds of round-trip delays (RTT) in fixing UL-Grant region;
Described sending module, for sending PUSCH according to the PUSCH synchronous HARQ timing relationship of described 10 milliseconds of RTT.
Preferably, described detection module, for receiving the system message of eNB, obtain flexible TDD and reshuffle the current SIB uplink-downlink configuration in community and MBSFN subframe configuration information, described MBSFN subframe configuration information is configured to MBSFN subframe by the descending sub frame of appointment in each radio frames under current SIB uplink-downlink configuration; And for the UL-Grant region of the subframe n in each radio frames, detect UL-Grant, PHICH or ePHICH, wherein n ∈ 0, Isosorbide-5-Nitrae, 5,6,9}; Wherein, in the subframe n of each radio frames the position in UL-Grant region and this subframe whether to be configured to MBSFN subframe relevant;
When detection module detects UL-Grant or triggers PHICH that non-self-adapting retransmits or during ePHICH on subframe n, described sending module, for judging according to table 4 whether n+k is less than or equal to 9, if, the subframe n+k in this radio frames sends the PUSCH being scheduled, otherwise, at subframe (n+k) mod10 of next radio frames, send the PUSCH being scheduled:
Table 4
| Subframe index n | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| k | 4 | 6 | ? | ? | 4 | 4 | 6 | ? | ? | 4 |
。
Preferably, described detection module can be further used in the UL-Grant region of subframe (n+k+l) mod10 of the next radio frames of uplink scheduling order place radio frames, detecting PHICH or the ePHICH for sent PUSCH according to table 5:
Table 5
| Subframe index n | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| l | ? | ? | 4 | 6 | 6 | ? | ? | 4 | 6 | 6 |
。
Preferably, if { 0,1,5,6} or described subframe n are not configured to MBSFN subframe to described subframe n ∈, and described detection module detects UL-Grant, PHICH or ePHICH at the PDCCH of subframe n symbol area and ePDCCH region;
If described subframe n is configured to MBSFN subframe, described detection module detects UL-Grant, PHICH or ePHICH in the non-MBSFN region of subframe n.
Those skilled in the art are appreciated that realizing all or part of step that above-described embodiment method carries is to come the hardware that instruction is relevant to complete by program, described program can be stored in a kind of computer-readable recording medium, this program, when carrying out, comprises step of embodiment of the method one or a combination set of.
In addition, each functional unit in each embodiment of the application 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, and also can adopt the form of software function module to realize.If described integrated module usings that the form of software function module realizes and during as production marketing independently 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 foregoing is only the application's preferred embodiment, not in order to limit the application, all within the application's spirit and principle, any modification of making, be equal to replacement, improvement etc., within all should being included in the scope of the application's protection.
Claims (10)
1. a transmission method for Physical Uplink Shared Channel, is characterized in that, comprising:
At flexible TDD, reshuffle in community, UE receives uplink scheduling order according to the PUSCH synchronous HARQ timing relationship of a kind of 10 milliseconds of round-trip delays (RTT) in fixing UL-Grant region, and sends PUSCH according to the PUSCH synchronous HARQ timing relationship of described 10 milliseconds of RTT.
2. method according to claim 1, is characterized in that:
Described UE receives uplink scheduling order according to the PUSCH synchronous HARQ timing relationship of a kind of 10 milliseconds of RTT in fixing UL-Grant region:
UE receives the system message of eNB, obtain flexible TDD and reshuffle the current SIB uplink-downlink configuration in community and MBSFN subframe configuration information, described MBSFN subframe configuration information is configured to MBSFN subframe by the descending sub frame of appointment in each radio frames under current SIB uplink-downlink configuration; Described SIB uplink-downlink configuration comprises: TDD uplink-downlink configuration #1, configuration #2, configuration #3, configuration #4 and configuration #5;
UE detects UL-Grant, PHICH or ePHICH in the UL-Grant region of the subframe n of each radio frames, wherein n ∈ 0, Isosorbide-5-Nitrae, 5,6,9}; Wherein, in the subframe n of each radio frames the position in UL-Grant region and this subframe whether to be configured to MBSFN subframe relevant;
The described PUSCH synchronous HARQ timing relationship according to described 10 milliseconds of RTT sends PUSCH and comprises:
If UE detects UL-Grant or triggers PHICH or the ePHICH that non-self-adapting retransmits on subframe n, according to table 4, if n+k≤9, the subframe n+k in this radio frames sends the PUSCH being scheduled, otherwise, at subframe (n+k) mod10 of next radio frames, send the PUSCH being scheduled:
Table 4
。
3. method according to claim 2, is characterized in that, the method further comprises:
If UE has sent PUSCH on subframe n+k or subframe (n+k) mod10, according to table 5, in the UL-Grant region of subframe (n+k+l) mod10 of the next radio frames of uplink scheduling order place radio frames, detect PHICH or the ePHICH for sent PUSCH:
Table 5
。
4. it is characterized in that according to the method in claim 2 or 3:
Described UE detects UL-Grant, PHICH in the UL-Grant region of the subframe n of each radio frames or ePHICH is:
If { 0,1,5,6} or described subframe n are not configured to MBSFN subframe to described subframe n ∈, and UE detects UL-Grant, PHICH or ePHICH at the PDCCH of subframe n symbol area and ePDCCH region;
If described subframe n is configured to MBSFN subframe, UE detects UL-Grant, PHICH or ePHICH in the non-MBSFN region of subframe n.
5. according to the method in claim 2 or 3, it is characterized in that, the PUSCH that described transmission is scheduled comprises:
If send the subframe of the PUSCH being scheduled, be configured to MBSFN subframe, the PUSCH in this subframe takies last Ns-p-g single-carrier frequency division multiple access (SC-FDMA) symbol of this subframe, wherein:
When the MBSFN region of this subframe is down direction, Ns is the OFDM symbolic number in this subframe, when the MBSFN region of this subframe is up direction, the symbolic number that the OFDM symbolic number that Ns is the non-MBSFN region in this subframe, protection interval take and be transformed to the SC-FDMA symbolic number sum in up MBSFN region;
The symbolic number that p takies for the interior non-MBSFN of this subframe region;
G is that last PDCCH symbol is to the protection interval between first PUSCH symbol.
6. a uplink dispatch method, is characterized in that, comprising:
At flexible TDD, reshuffle in community, eNB sends uplink scheduling order according to the PUSCH synchronous HARQ timing relationship of a kind of 10 milliseconds of round-trip delays (RTT) in fixing UL-Grant region, and receives according to the PUSCH synchronous HARQ timing relationship of described 10 milliseconds of RTT the PUSCH being scheduled.
7. a subscriber equipment, is applied to flexible TDD and reshuffles community, it is characterized in that, comprising: detection module and sending module, wherein:
Described detection module, receives uplink scheduling order for the PUSCH synchronous HARQ timing relationship according to a kind of 10 milliseconds of round-trip delays (RTT) in fixing UL-Grant region;
Described sending module, for sending PUSCH according to the PUSCH synchronous HARQ timing relationship of described 10 milliseconds of RTT.
8. subscriber equipment according to claim 7, is characterized in that:
Described detection module, for receiving the system message of eNB, obtain flexible TDD and reshuffle the current SIB uplink-downlink configuration in community and MBSFN subframe configuration information, described MBSFN subframe configuration information is configured to MBSFN subframe by the descending sub frame of appointment in each radio frames under current SIB uplink-downlink configuration; And for the UL-Grant region of the subframe n in each radio frames, detect UL-Grant, PHICH or ePHICH, wherein n ∈ 0, Isosorbide-5-Nitrae, 5,6,9}; Wherein, in the subframe n of each radio frames the position in UL-Grant region and this subframe whether to be configured to MBSFN subframe relevant;
When detection module detects UL-Grant or triggers PHICH that non-self-adapting retransmits or during ePHICH on subframe n, described sending module, for judging according to table 4 whether n+k is less than or equal to 9, if, the subframe n+k in this radio frames sends the PUSCH being scheduled, otherwise, at subframe (n+k) mod10 of next radio frames, send the PUSCH being scheduled:
Table 4
。
9. subscriber equipment according to claim 8, is characterized in that:
Described detection module, is further used in the UL-Grant region of subframe (n+k+l) mod10 of the next radio frames of uplink scheduling order place radio frames, detecting PHICH or the ePHICH for sent PUSCH according to table 5:
Table 5
。
10. subscriber equipment according to claim 8 or claim 9, is characterized in that:
If { 0,1,5,6} or described subframe n are not configured to MBSFN subframe to described subframe n ∈, and described detection module detects UL-Grant, PHICH or ePHICH at the PDCCH of subframe n symbol area and ePDCCH region;
If described subframe n is configured to MBSFN subframe, described detection module detects UL-Grant, PHICH or ePHICH in the non-MBSFN region of subframe n.
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