WO2016019724A1

WO2016019724A1 - Data transmission method, apparatus and system

Info

Publication number: WO2016019724A1
Application number: PCT/CN2015/074332
Authority: WO
Inventors: 杨瑾; 李儒岳; 吴栓栓; 卢有雄
Original assignee: 中兴通讯股份有限公司
Priority date: 2014-08-07
Filing date: 2015-03-16
Publication date: 2016-02-11
Also published as: CN105337706A

Abstract

The present invention provides a data transmission method, apparatus and system, wherein, the data transmission method includes: a first user equipment (UE) determines the sub-frame where a data channel resource is located according to the index number k of an initial transmission sub-frame, or the index number k of the initial transmission sub-frame and a retransmission interval t, and k and t are non-negative integers; and the first UE transmits a data transmission block (TB) in the sub-frame where the data channel resource is located.

Description

Data transmission method, device and system

Technical field

The present invention relates to the field of communications, and in particular to a data transmission method, apparatus, and system.

Background technique

In a device-to-device (D2D) communication system, when there is a service between the user equipment (User Equipment, UE for short), the service data between the UEs is not forwarded by the base station, but directly Transmitted by the data source UE to the target UE over the air interface. 1 is a schematic diagram of a D2D communication structure according to the related art. As shown in FIG. 1, this communication mode has characteristics that are significantly different from those of a conventional cellular system, and for a short-range communication user capable of applying a D2D communication method, D2D The transmission not only saves the wireless spectrum resources, but also reduces the data transmission pressure of the core network, can reduce the system resource occupation, increase the spectrum efficiency of the cellular communication system, reduce the terminal transmission power consumption, and largely save the network operation cost.

In a Long Term Evolution (LTE) system, a radio resource divides resources in units of radio frames in a time domain, each radio frame being 10 ms, including 10 subframes. Each sub-frame is 1 ms, divided into 2 slots of 0.5 ms, as shown in FIG. In the cellular communication, the radio resource of the UE is uniformly controlled by the evolved base station (evolved NodeB, eNB for short), and the UE receives the scheduling control indication information from the eNB, and receives the data transmitted by the eNB on the corresponding downlink resource according to the indication information. Or transmitting a signal to the eNB on the uplink resource. In D2D communication, data is directly transmitted between the transmitting UE and the receiving UE through a fixed radio resource, and the transmitting UE cannot dynamically determine the D2D data channel resource configuration information by using the eNB in the cellular communication to schedule the indication resource to the UE. .

For the problem that the transmitting UE of the D2D communication in the related art cannot dynamically indicate the D2D data channel resource used, an effective solution has not been proposed yet.

Summary of the invention

The present invention provides a data transmission scheme to solve at least the above problems, in view of the problem that the transmitting end UE of the D2D communication in the related art cannot dynamically indicate the used D2D data channel resource.

According to an embodiment of the present invention, a data sending method is provided, including: determining, by a first user equipment UE, data by initially transmitting a subframe index number k, or by using the initial transmission subframe index number k and a retransmission interval t The subframe in which the channel resource is located, k, t is a non-negative integer; the first UE transmits the data transmission block TB on the subframe in which the data channel resource is located.

Optionally, the first user equipment UE determines, by using the initial transmission subframe index number k, one subframe in which the data channel resource is located; the first UE is in a subframe where the data channel resource is located Transmitting the TB; or the first user equipment UE determines, by using the initial transmission subframe index number k and the retransmission interval t, N subframes in which the data channel resource is located, where N is an integer greater than 0; A UE sends N times to the TB in the N subframes where the data channel resource is located, where N is the number of times the TB is sent.

Optionally, the method further includes: the first UE indicating, within a TB interval corresponding to the TB to be sent, a subframe in which the data channel resource is located, where the TB interval is available to send the The maximum subframe range of the TB includes K subframes, and K is a positive integer greater than or equal to the number of transmissions of the TB.

Optionally, the determining, by the first UE, the subframe in which the data channel resource is located, includes: determining, by the first UE, the first transmission of the TB within a TB interval by using the initial transmission subframe index number k The sub-frame #k is transmitted, wherein the starting subframe with the TB interval is recorded as subframe #0, and the initial transmission subframe #k refers to the k-th subframe after the starting subframe, k∈[0 , K-1], K is the TB interval.

Optionally, the determining, by the first UE, the subframe in which the data channel resource is located further includes: determining, by the first UE, that the first UE is repeated within the TB interval by using the retransmission interval t Sending N-1 retransmission subframes #m of the TB, where N is the number of transmissions of the TB, m=k+t*n, n∈[1, N-1].

Optionally, the determining, by the first UE, the subframe in which the data channel resource is located, including: determining, by the first UE, the first transmission of the TB within the TB interval by using the initial transmission subframe index number k The initial transmission subframe #k _D2D , wherein the TB interval includes K _D2D devices to the device D2D subframe, K _D2D ≤ K, and the K _D2D D2D subframes are sequentially connected to form a logical subframe sequence, respectively a subframe [#0,...,#K _D2D -1], wherein the initial transmission subframe index number k indicates a logical initial transmission subframe #k in the logical subframe sequence, and according to the D2D a distribution of the subframes within the TB interval, determining a physical initial transmission subframe #k _D2D corresponding to the logical initial transmission subframe #k; a number of the D2D subframes K _D2D and a subframe included in the TB interval The location is indicated by system pre-defined or higher layer signaling configuration.

Optionally, the determining, by the first UE, the subframe in which the data channel resource is located, the method further includes: determining, by the first UE, the TB interval by using the retransmission interval t based on the initial transmission subframe #k _D2D Repeatingly transmitting N-1 retransmission subframes #m _{D2D of} the TB, wherein the K _D2D D2D subframes are sequentially connected to form a logical subframe sequence [#0,...,#K _D2D -1] Determining a logical retransmission subframe #m, m=k+t*n, n∈[1, N-1] according to the logical initial transmission subframe #k and the retransmission interval t, and further, according to the D2D The distribution of the subframes within the TB interval determines the physical retransmission subframe #m _D2D corresponding to the logical retransmission subframe #m.

Optionally, in a case where one subframe in which the used data channel resource is determined is determined by the initial transmission subframe index number k and the retransmission interval t, the retransmission interval t is set to a fixed value, or the t value indicates no Meaning, or does not indicate a t value, or the t value is null.

Optionally, the method further includes: the first UE indicating the initial transmission subframe index number k and/or the retransmission interval t in the control indication signaling, where the control indication signaling is The device-to-device D2D scheduling configuration signaling or the D2D scheduling indication time-domain resource pattern in the SA signaling transmits T-RPT information.

Optionally, the first UE indicates the retransmission interval t by using 1 or 2 or 3 or 4 bit indication signaling.

Optionally, the method further includes: the first UE indicating the initial transmission subframe index number k in the control indication signaling, where the maximum value of the initial transmission subframe index number k indicated by the TB The interval K and the number of transmissions N of the TB are determined, and the value of the initial transmission subframe index number k is greater than or equal to zero, and is less than the integer value of K divided by N downward; or greater than or equal to zero, and less than K is divided by N and the value determined by the downward determination is equal to the smaller value of 15, taking an integer; or, the indicated maximum value of the initial transmission subframe index number k is represented by the D2D subframe included in the TB interval. The number K _D2D and the number of transmissions N of the TB are determined, and the value of the initial transmission subframe index number k is greater than or equal to zero, and is less than K _D2D divided by an integer value rounded down by N; or greater than or equal to zero, And less than K _D2D divided by N is rounded down to determine the value and the smaller of 15, take an integer.

Optionally, the initial transmission subframe index number k is determined according to at least one of the following information: the resource information of the control indication channel used by the first UE, the ID information of the first UE, and the TB interval The number of subframes K, the number of D2D subframes K _D2D included in the TB interval, the number of transmissions N of the TB, and the retransmission interval t.

Optionally, the initial transmission subframe index number k is determined by the resource information of the control indication channel used by the first UE and the number of subframes K or the number of _D2D subframes K _D2D included in the TB interval, where And k is a value obtained by performing a modulo operation on the resource index number SA index of the control indication channel for K; or k is a value obtained by performing a modulo operation on the resource index number SA index of the control indication channel to K _D2D .

Optionally, the initial transmission subframe index number k is determined by an ID of the first UE and a number of subframes K or a number of _D2D subframes K _D2D included in the TB interval, where k is the first A UE's UE radio network temporarily identifies a value obtained by modulo-calculating K by RNTI or D2D RNTI; or k is a value obtained by modulo-calculating K _D2D by UE RNTI or D2D RNTI of the first UE.

Optionally, the initial transmission subframe index number k is used by the first UE to control resource information of the channel, the number of subframes K included in the TB interval, or the number of _D2D subframes K _D2D , and The number N of transmissions of the TB is determined, where k is a value obtained by performing a modulo operation on the resource index number SA index of the control indication channel by dividing N by N rounded down; or k is the control indication channel The resource index number SA index is a value obtained by modulo K _D2D divided by N rounded down values.

Optionally, the initial transmission subframe index number k is used by the first UE, the resource information of the control indication channel, the number of subframes K included in the TB interval, or the number of _D2D subframes K _D2D , The number N of transmissions of the TB, and the retransmission interval t is determined, where k = (SA index) mod (K - (N - 1) * t), wherein the SA index is the resource index number of the control indication channel Or k=(SA index) mod(K _D2D -(N-1)*t).

Optionally, the initial transmission subframe index number k is the ID of the first UE, the number of subframes K included in the TB interval, or the number of _D2D subframes K _D2D , and the number of transmissions of the TB. Determining, where k is a value obtained by performing a modulo operation on a value of K divided by N rounded down by a UE RNTI or a D2D RNTI of the first UE; or k is a UE RNTI or D2D RNTI of the first UE A value obtained by performing a modulo operation on K _D2D divided by the value of N rounded down.

Optionally, the initial transmission subframe index number k is the ID of the first UE, the number of subframes K included in the TB interval, or the number of _D2D subframes K _D2D , the number of transmissions N of the TB, And determining, in the retransmission interval t, where k=(UE D2D RNTI) mod(K−(N−1)*t), the UE D2D RNTI is the UE RNTI or D2D RNTI of the first UE; or k= (UE D2D RNTI) mod (K _D2D - (N-1) * t).

Optionally, the initial transmission subframe index number k further superimposes the offset indication amount Δk as the updated initial transmission subframe index number k, wherein the offset indication amount Δk is used by the first UE In the control indication signaling, the control indication signaling is a device-to-device D2D scheduling configuration signaling, or D2D SA T-RPT signaling.

Optionally, the retransmission interval t is a unique fixed value, which is determined by a system specification; or the retransmission interval t is indicated by a network side by a high layer signaling configuration, where the network side includes one of the following entities: One or more of: an evolved base station eNB, a cell cooperative entity MCE, a gateway GW, a mobility management device MME, an evolved universal terrestrial radio access network EUTRAN, an operation management and maintenance OAM manager.

Optionally, the retransmission interval t is determined according to a predefined rule and a number N of transmissions of the TB.

Optionally, determining the predefined rule of the retransmission interval t according to the number N of transmissions of the TB includes at least one of the following: when N=2, t=4, when N=4, t=2, N When =8, t=1; or, when N=2, t=8, N=4 When t=4, N=8, t=1; or, when N=2, t=8, when N=4, t=4, when N=8, t=2; or, when N=2 , t=3, when N=4, t=2, when N=8, t=1; or, when N=2, t=5, when N=4, t=3, N=8, t= 2; or, when N=2, t=4, when N=4, t=1, or N=2, t=4, when N=4, t=2, or N=2, t=2 When N=4, t=1, or N=2, t=8, when N=4, t=4.

Optionally, the retransmission interval t is determined according to the TB interval K or the number of D2D subframes K _D2D included in the TB interval, and the number N of transmissions of the TB, where the retransmission interval t is equal to K division An integer value rounded down by N; or the retransmission interval t is equal to K _D2D divided by an integer value rounded down by N.

Optionally, the initial transmission subframe index number k and the retransmission interval t are determined by a resource configuration index number Resource Index i indicated by the first UE in the control indication signaling, and a predefined resource configuration table.

Optionally, the control indication signaling is device-to-device D2D scheduling configuration signaling, or D2D SA T-RPT signaling.

Optionally, the resource configuration index number i in the resource configuration table is the TB interval K, the number of transmissions N of the TB, and an initial transmission subframe index number k or an initial transmission subframe reference value k ₀ Joint coding indication value, that is, the resource configuration index number i uniquely corresponds to one of the TB interval K, the number of transmissions N of the TB, and the initial transmission subframe index number k or the initial transmission subframe reference value k ₀ .

Optionally, different values of the combination of the TB interval and the number of transmissions of the TB [K, N] correspond to different numbers of the resource configuration index numbers i.

Optionally, the resource configuration table defines a TB interval K corresponding to the resource configuration index number i, a number N of transmissions of the TB, and an initial transmission subframe index number k; the retransmission interval t is according to The TB interval K and the number of transmissions N of the TB are determined, where t is equal to the integer value of K divided by N rounded down.

Optionally, the resource configuration table defines a TB interval K corresponding to the resource configuration index number i, a number N of transmissions of the TB, and an initial transmission subframe reference value k ₀ ; the retransmission interval t is according to The TB interval is determined by the number of D2D subframes K _D2D included in the TB interval and the number N of transmissions of the TB, where t is equal to K _D2D divided by an integer value rounded down by N; the initial transmission subframe index number k It is determined according to the retransmission interval t and the initial transmission subframe reference value k ₀ , where k is equal to a value obtained by performing a modulo operation on k ₀ for t.

According to another embodiment of the present invention, a data receiving method is provided, including: the second user equipment UE transmits the subframe index number k by initial transmission, or passes the initial transmission subframe index number k and the retransmission interval t Determining a subframe in which the data channel resource is located, k, t is a non-negative integer; the second UE receives the data transmission block TB on a subframe in which the data channel resource is located.

Optionally, the second user equipment UE determines, by using the initial transmission subframe index number k, one subframe in which the data channel resource is located, and the second UE receives data in one subframe where the data channel resource is located. Transmitting the block TB; or, the second user equipment UE determines, by the initial transmission subframe index number k and the retransmission interval t, N subframes in which the data channel resource is located, where N is an integer greater than 0, where the The second UE receives N times of transmissions of the TB on the N subframes where the data channel resource is located, where N is the number of transmissions of the TB.

Optionally, the determining, by the second UE, the subframe in which the data channel resource is located, the second UE is within the TB interval corresponding to the TB to be received, according to the initial transmission subframe index number k, or the initial The transmission subframe index number k and the retransmission interval t determine a subframe in which the data channel resource is located, where the TB interval is a maximum subframe range that can be used to receive the TB, and includes K subframes, where K is greater than Equal to N, K is a positive integer.

Optionally, the determining, by the second UE, the subframe in which the data channel resource is located includes: determining, by the second UE, the first transmission of the TB within the TB interval by using the initial transmission subframe index number k Frame #k, where the starting subframe with the TB interval is recorded as subframe #0, and the initial subframe #k refers to the kth subframe after the starting subframe, k∈[0,K -1].

Optionally, the determining, by the second UE, the subframe in which the data channel resource is located, further comprising: determining, according to the initial transmission subframe #k, that the TB is received within the TB interval by using the retransmission interval t N-1 retransmission subframes #m, where m=k+t*n, n∈[1, N-1].

Optionally, the determining, by the second UE, the subframe in which the data channel resource is located, including: determining, by the second UE, the first time that the TB is received within the TB interval by using the initial transmission subframe index number k The initial transmission subframe #k _D2D , wherein the TB interval includes K _D2D devices to the device D2D subframe, K _D2D ≤ K, and the K _D2D D2D subframes are sequentially connected to form a logical subframe sequence, respectively a subframe [#0,...,#K _D2D -1]; the initial transmission subframe index number k indicates a logical initial transmission subframe #k in the logical subframe sequence, and further, according to the D2D a distribution of the subframes within the TB interval, determining a physical initial transmission subframe #k _D2D corresponding to the logical initial transmission subframe #k; a number of the D2D subframes K _D2D and a subframe included in the TB interval The location is indicated by system pre-defined or higher layer signaling configuration.

Optionally, the determining, by the second UE, the subframe in which the data channel resource is located, further comprising: determining, by the second UE, the TB interval by using the retransmission interval t based on the initial transmission subframe #k _D2D Receiving the N-1 retransmission subframes #m _D2D retransmitted by the TB, wherein the K _D2D D2D subframes are sequentially connected to form a logical subframe sequence [#0,...,#K _D2D -1] Up, determining a logical retransmission subframe #m, m=k+t*n, n∈[1, N-1] according to the logical initial transmission subframe #k and the retransmission interval t, further, according to the The distribution of the D2D subframes within the TB interval determines a physical retransmission subframe #m _D2D corresponding to the logical retransmission subframe #m.

Optionally, when the second UE determines, by using the initial transmission subframe index number k and the retransmission interval t, one subframe in which the used data channel resource is located, the retransmission interval t is a fixed value, or the t value indicates meaningless. Or, the t value indication is not obtained, or the indicated t value is null.

Optionally, the second UE obtains the initial transmission subframe index number k and/or the retransmission interval t in the control indication signaling sent by the first UE, where the control indication signaling is a device to device The D2D scheduling configuration signaling, or the D2D scheduling indication, the time domain resource pattern in the SA signaling, transmits T-RPT signaling, where the first UE is the control indication signaling and the sending end of the TB.

Optionally, the second UE obtains the initial transmission subframe index number k from the control indication signaling, where a maximum value of the initial transmission subframe index number k is determined by the TB interval K and The number N of transmissions of the TB is determined, and the value of the initial transmission subframe index number k is greater than or equal to zero, and is less than the integer value of K divided by N rounding; or greater than or equal to zero, and less than K divided by N Rounding up the determined value and the smaller value of 15, taking an integer; or, the maximum value of the initial transmission subframe index number k is the number of the D2D subframes K _D2D included in the TB interval The number N of transmissions of the TB is determined, and the value of the initial transmission subframe index number k is greater than or equal to zero, and is less than K _D2D divided by an integer value rounded down by N; or greater than or equal to zero, and less than K _D2D Divide by N to round down the exact value and the smaller of 15, take an integer.

Optionally, the second UE determines the initial transmission subframe index number k according to at least one of the following: the received resource information of the control indication channel, the ID information of the first UE, the TB interval The number of subframes K included, the number of _D2D subframes K _D2D included in the TB interval, the number of transmissions N of the TB, and the retransmission interval t.

Optionally, the initial transmission subframe index number k is determined by the received resource information of the control indication channel and the number of subframes K or the number of _D2D subframes K _D2D included in the TB interval, where k a value obtained by performing a modulo operation on the resource index number SA index of the control indication channel for K; or k is a value obtained by performing a modulo operation on the K _D2D by the resource index number SA index of the control indication channel.

Optionally, the initial transmission subframe index number k is used by the first UE to control resource information of the channel, the number of subframes K K included in the TB interval, or the number of _D2D subframes K _D2D , and The number N of transmissions of the TB is determined, where k is a value obtained by performing a modulo operation on the resource index number SA index of the control indication channel by dividing N by N rounded down; or k is the control indication channel The resource index number SA index is a value obtained by modulo K _D2D divided by N rounded down values.

Optionally, the initial transmission subframe index number k is the ID of the first UE, the number of subframes K included in the TB interval, or the number of _D2D subframes K _D2D , the number of transmissions N of the TB, and The retransmission interval t is determined, where k=(UE D2D RNTI) mod(K−(N−1)*t), where the UE D2D RNTI is the UE RNTI or D2D RNTI of the first UE; or k = (UE D2D RNTI) mod (K _D2D - (N-1) * t).

Optionally, the second UE receives information indicating the retransmission interval t by using 1 or 2 or 3 or 4 bits from the control indication signaling sent by the first UE.

Optionally, the retransmission interval t is a unique fixed value, which is determined by a system specification; or the retransmission interval t is indicated by a network side by a high layer signaling configuration, where the network side includes at least one of the following Entity: evolved base station eNB, cell cooperative entity MCE, gateway GW, mobility management device MME, evolved universal terrestrial radio access network EUTRAN, operation management and maintenance OAM manager.

Optionally, determining the predefined rule of the retransmission interval t according to the number N of transmissions of the TB includes at least one of the following: when N=2, t=4, when N=4, t=2, N When =8, t=1; or, when N=2, t=8, when N=4, t=4, when N=8, t=1; or, when N=2, t=8, N= 4 o'clock, t=4, when N=8, t=2; or When N=2, t=3, when N=4, t=2, when N=8, t=1; or, when N=2, t=5, when N=4, t=3,N =8, t=2; or, when N=2, t=4, when N=4, t=1, or N=2, t=4, when N=4, t=2, or N= 2, t=2, when N=4, t=1, or N=2, t=8, when N=4, t=4.

Optionally, the second UE determines the initial transmission subframe index number k and the retransmission interval according to the resource configuration index number Resource Index i indicated in the control indication signaling and a predefined resource configuration table. t.

Optionally, the resource configuration table defines a TB interval K corresponding to the resource configuration index number i, a number of transmissions N of the TB, and an initial transmission subframe index number k; the retransmission interval t is according to the The TB interval K and the number of transmissions N of the TB are determined, where t is equal to the integer value of K divided by N rounded down.

According to still another embodiment of the present invention, there is provided a data transmitting apparatus, comprising: a determining module configured to determine data by initially transmitting a subframe index number k, or the initial transmission subframe index number k and a retransmission interval t The subframe in which the channel resource is located, k, t is a non-negative integer; and the sending module is configured to send the data transmission block TB on the subframe in which the data channel resource is located.

Optionally, the determining module is configured to determine, by using the initial transmission subframe index number k, one subframe in which the data channel resource is located; or by using the initial transmission subframe index number k and the retransmission interval Determining N subframes in which the data channel resource is located, where N is an integer greater than 0; the sending module is configured to send the TB in one subframe where the data channel resource is located; or where the data channel resource is located The TB is transmitted N times in the N subframes, where N is the number of transmissions of the TB.

Optionally, the method further includes: an indication module, configured to indicate the initial transmission subframe index number k and/or the retransmission interval t in the control indication signaling, where the control indication signaling is a device to device D2D scheduling configuration signaling or D2D SA T-RPT signaling.

Optionally, the determining module is configured to determine, by using the initial transmission subframe index number k, that the first transmission subframe #k of the TB is sent for the first time within a TB interval, where the starter of the TB interval The frame is denoted as subframe #0, and the initial transmission subframe #k refers to the kth subframe after the start subframe, k ∈ [0, K-1], and K is the TB interval.

Optionally, the determining module is further configured to, according to the initial transmission subframe #k, determine, by using the retransmission interval t, that the N-1 retransmission subframes of the TB are repeatedly transmitted within the TB interval. m, where N is the number of transmissions of the TB, m=k+t*n, n∈[1, N-1].

Optionally, the determining module is configured to determine, by using the initial transmission subframe index number k, that the first transmission subframe #k _{D2D of} the TB is sent for the first time within the TB interval, where the TB interval is within Include K _D2D devices to device D2D subframes, K _D2D ≤ K, sequentially connect the K _D2D D2D subframes to form a logical sub-frame sequence, respectively recorded as sub-frames [#0,...,#K _D2D -1] The initial transmission subframe index number k indicates a logical initial transmission subframe #k in the logical subframe sequence, and the logic is determined according to a distribution of the D2D subframe within the TB interval. First the initial transmission subframe #k corresponding physical transmission subframe #k _D2D; _D2D number K and the D2D subframe position within said subframe interval TB included in system configuration is indicated by higher layer signaling or predefined.

Optionally, the determining module is further configured to, according to the initial transmission subframe #k _D2D , determine, by using the retransmission interval t, that the N-1 retransmission subframes of the TB are repeatedly transmitted within the TB interval. #m _D2D , wherein the K _D2D D2D subframes are sequentially connected to form a logical subframe sequence [#0, . . . , _{#K D2D} -1], according to the logical initial transmission subframe #k and the retransmission interval Determining a logical retransmission subframe #m, m=k+t*n, n∈[1, N-1], further determining the logic according to a distribution of the D2D subframe within the TB interval Retransmit the physical retransmission subframe #m _D2D corresponding to subframe #m.

According to still another embodiment of the present invention, there is provided a data receiving apparatus comprising: a determining module configured to initially transmit a subframe index number k, or by the initial transmission subframe index number k and a retransmission interval t Indeed The subframe in which the data channel resource is located, k, t is a non-negative integer; and the receiving module is configured to receive the data transmission block TB on the subframe in which the data channel resource is located.

Optionally, the determining module is configured to determine, by using the initial transmission subframe index number k, one subframe in which the data channel resource is located or determine the data channel by using the initial transmission subframe index number k and the retransmission interval t N subframes in which the resource is located, N is an integer greater than 0; the receiving module is configured to receive the data transmission block TB in one subframe in which the data channel resource is located; or N in the data channel resource The N times of transmission of the TB are received on the frame, and N is the number of transmissions of the TB.

Optionally, the determining module is configured to be within the TB interval corresponding to the TB to be received according to the initial transmission subframe index number k, or the initial transmission subframe index number k and the retransmission interval t Determining a subframe in which the data channel resource is located, where the TB interval is a maximum subframe range that can be set to receive the TB, and includes K subframes, where K is greater than or equal to N, and K is a positive integer.

Optionally, the determining module is configured to determine, by using the initial transmission subframe index number k, an initial transmission subframe #k that receives the TB for the first time within a TB interval, where the start of the TB interval The subframe is denoted as subframe #0, and the initial subframe #k refers to the kth subframe after the start subframe, k ∈ [0, K-1].

Optionally, the determining module is further configured to determine, according to the initial transmission subframe #k, the N-1 retransmission subframes that receive the TB retransmission within the TB interval by using the retransmission interval t #m, where m=k+t*n,n∈[1,N-1].

Optionally, the determining module is configured to determine, by using the initial transmission subframe index number k, that the first transmission subframe #k _{D2D of} the TB is received within the TB interval for the first time, where the TB interval is within Include K _D2D devices to device D2D subframes, K _D2D ≤ K, sequentially connect the K _D2D D2D subframes to form a logical sub-frame sequence, respectively recorded as sub-frames [#0,...,#K _D2D -1] The initial transmission subframe index number k indicates a logical initial transmission subframe #k in the logical subframe sequence, and further, the logic is determined according to a distribution of the D2D subframe within the TB interval. First the initial transmission subframe #k corresponding physical transmission subframe #k _D2D; _D2D number K and the D2D subframe position within said subframe interval TB included in system configuration is indicated by higher layer signaling or predefined.

Optionally, the determining module is further configured to determine, according to the initial transmission subframe #k _D2D , the N-1 retransmissions that receive the TB retransmission within the TB interval by using the retransmission interval t Frame #m _D2D , wherein the K _D2D D2D subframes are sequentially connected to form a logical subframe sequence [#0, . . . , _{#K D2D} -1], according to the logical initial transmission subframe #k and the retransmission The interval t determines a logical retransmission subframe #m, m=k+t*n, n∈[1, N-1], and further, according to the distribution of the D2D subframe within the TB interval, determining the The logical retransmission subframe #m corresponds to the physical retransmission subframe #m _D2D .

Optionally, the method further includes: an obtaining module, configured to obtain the initial transmission subframe index number k and/or the retransmission interval t from the received control indication signaling, where the control indication signaling is a device to The device D2D schedules configuration signaling, or D2D SA T-RPT signaling.

According to still another embodiment of the present invention, a data transmission system is provided, including: a first user equipment UE and a second UE, where the first UE includes the foregoing data transmitting apparatus, and the second UE includes the foregoing s installation.

By using the initial transmission subframe index number, or the initial transmission subframe index number and the retransmission interval, the data channel subframe resource used for one or more transmissions of the data block is indicated, so that the transmitting UE can effectively indicate the used sub-frame. The frame resource and the subframe resource configuration that enables the receiving UE to effectively obtain the data block to be received achieve flexible and efficient configuration of the data channel resource and reduce the signaling overhead.

DRAWINGS

The drawings described herein are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:

1 is a schematic diagram of a D2D communication structure according to the related art;

2 is a schematic structural diagram of a radio frame of an LTE system;

3 is a flowchart of a data transmitting method according to an embodiment of the present invention;

4 is a schematic diagram of a subframe resource configuration indicating that 4 TBs are transmitted in one SA period according to an embodiment of the present invention;

5 is a schematic diagram of a subframe resource configuration in which k and t indication information determine a TB transmission within a TB interval according to an embodiment of the present invention;

6 is a schematic diagram of a subframe resource configuration for determining a TB transmission within a TB interval by using k and t indication information on the basis of a D2D subframe resource pool configuration according to an embodiment of the present invention;

7 is a schematic diagram of a subframe resource configuration according to Example 17 of the present invention;

8 is a schematic diagram of a subframe resource configuration according to Example 18 of the present invention;

9 is a schematic diagram of a subframe resource configuration according to Example 19 of the present invention;

10 is a schematic diagram of a subframe resource configuration according to Example 20 of the present invention;

11 is a schematic diagram of a subframe resource configuration according to an twenty-first embodiment of the present invention;

12 is a schematic diagram of a subframe resource configuration according to an example 22 of the present invention;

13 is a schematic diagram of a subframe resource configuration according to Example XXIII of the present invention;

FIG. 14 is a flowchart of a data receiving method according to an embodiment of the present invention; FIG.

FIG. 15 is a schematic structural diagram of a data transmitting apparatus according to an embodiment of the present invention; FIG.

Figure 16 is a block diagram showing the structure of a data receiving apparatus according to an embodiment of the present invention.

detailed description

The invention will be described in detail below with reference to the drawings in conjunction with the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

According to an embodiment of the present invention, a data transmitting method is provided.

FIG. 3 is a flowchart of a data sending method according to an embodiment of the present invention. As shown in FIG. 3, the method mainly includes the following steps:

Step S302: The first user equipment UE determines, by using the initial transmission subframe index number k, or the initial transmission subframe index number k and the retransmission interval t, that the subframe in which the data channel resource is located, k, t is a non-negative integer.

Step S304, the first UE sends a data transmission block TB on a subframe in which the data channel resource is located.

In the D2D communication system, the data is directly transmitted between the UEs, and the transmitting UE (the first UE) transmits the D2D control indication information or the system predefined parameters and rules to one or more receiving UEs (the second UE). The corresponding D2D data channel resource configuration is indicated, so that the receiving end UE can determine the D2D data channel resource configuration according to the control indication information or the predefined parameters and rules, and receive the required data on the corresponding D2D data channel resource. The D2D control indication information may also be referred to as Scheduling Assignment (SA) information. The following example uses the SA as the D2D control indication information as an example for description.

The D2D communication includes multiple types of resources, such as a D2D data channel resource, a D2D discovery channel resource, a D2D SA resource, and a D2D synchronization channel resource. The transmitting end UE sends the SA information on the D2D SA resource, and the SA may include the indication information about the data channel resource used by the transmitting end UE, and the transmitting end UE D2D wireless network temporary identifier (Radio Network Tempory Identity) , RNTI) and other information.

The SA resource and the data channel resource are divided into sub-frames in the time domain, and the D2D SA information is carried on the SA subframe, and the D2D data information is carried on the Data subframe. Therefore, the D2D data channel resource is transmitted in a valid SA. The minimum scheduling configuration period, also known as the SA period. Within one SA period, the transmitting UE can transmit one or more TBs, and each TB has a certain TB interval, that is, a subframe range that can be used to transmit the TB in the SA period, corresponding to the time domain. K subframes, K is a positive integer. The transmitting UE indicates one or more subframes for transmitting the TB within the K subframes. As shown in FIG. 4, the SA period is 40 ms, and the transmitting UE transmits 4 TBs in the SA period, and each TB TB. The interval is 10ms, K=10. Within the TB interval, the UE configures 2 transmissions for each TB, and performs initial transmission on subframe#0 and retransmission on subframe#4.

The transmitting end UE may be configured to transmit once or transmit N times for each TB, and each transmission needs to indicate the data subframe position where the corresponding data channel is located. Therefore, when the TB is transmitted only once, one subframe should be indicated within the TB interval. That is, the initial transmission subframe, the transmitting UE sends the TB to be transmitted on the indicated subframe; when the TB is configured to transmit N times, the N subframes should be indicated within the TB interval, including the initial transmission subframe and the N-1 The retransmission subframe, the transmitting UE performs N transmissions on the TB to be transmitted on the indicated subframe.

The transmitting end UE indicates one subframe in which the data channel resource is located by using the initial transmission subframe index number k; or, by using the initial transmission subframe index number k and the retransmission interval t, one or N subframes in which the data channel resource is located, where N is An integer greater than 1, k, t is a non-negative integer, and the transmitting end UE indicates, by k and t, a subframe configuration in which one TB to be transmitted is within a corresponding TB interval.

When the available subframes of the D2D communication are not constrained in the system, or any system subframes may be used as the D2D subframes, the actual physical subframes are directly indicated by the initial transmission subframe index number k and the retransmission interval t, namely:

The initial transmission subframe index number k is used to indicate the initial transmission subframe #k, and the initial subframe within the TB interval is recorded as the subframe #0, and the initial transmission subframe #k refers to the kth subframe after the initial subframe. Frame, k∈[0, K-1].

When N transmissions are configured for the TB, based on the initial transmission subframe #k, the position of the N-1 retransmission subframes #m is further indicated by t, where m=k+t*n, n∈ [1, N-1]. The sub-frame resource configuration of the TB transmission is indicated within the TB interval by k and t. As shown in FIG. 5, the number of transmissions of the TB is N=4, and the sub-frame #k is indicated by k. The initial transmission subframe further starts with the initial transmission subframe #k as a starting point, and the subframe corresponding to each t subframe interval is one retransmission subframe until the configured transmission times are reached.

When the D2D subframe resource pool configuration exists in the system, the initial transmission subframe index number k and the retransmission interval t are indicated based on the logical subframe sequence formed by sequentially connecting all the configured D2D subframes. The D2D subframe resource pool is predefined or pre-configured by the system, or is indicated by a high-level signaling configuration. One or more subframes are included in the TB interval as available subframes for D2D communication, and the D2D data signal can only be in the configured D2D sub-frame. The resource is configured and transmitted on the frame.

K _D2D D2D subframes can be configured in the TB interval range, and K _D2D ≤ K, the configured D2D subframes can be continuous or discrete, and all K _D2D D2D subframes can be sequentially connected to form a logically continuous The D2D subframe sequence can be recorded as subframe #0,...,#K _D2D -1.

The initial transmission subframe index number k is used to indicate the logical initial transmission subframe #k in the foregoing D2D logical subframe sequence. Further, further, according to the distribution of the D2D subframe in the TB interval, the logical initial transmission subframe may be determined. #k corresponds to the physical initial transmission subframe #k _D2D .

When N transmissions are configured for the TB, the location of the N-1 logical retransmission subframes #m is indicated by t in the logical initial transmission subframe #k based on the D2D logical subframe sequence, where m= k+t*n, n∈[1, N-1]. Further, according to the distribution of the D2D subframe in the TB interval, the physical retransmission subframe #m _D2D corresponding to the logical retransmission subframe #m may be determined, as shown in FIG. N=4, in the D2D logical subframe sequence, the logical sub-frame #k is indicated by k as the logical initial transmission subframe, and the logical initial transmission subframe #k is used as the starting point, and the logical subframe corresponding to each t subframe interval is Retransmitting the subframe until the configured number of transmissions is reached. Further, according to the correspondence between the D2D logical subframe sequence and the physical subframe, determining the initial transmission subframe #k _D2D corresponding to the logical initial transmission subframe #k, And the retransmission subframe #m _D2D corresponding to the logical retransmission subframe #m.

In addition, when the data subframe resource configuration of each TB transmission is fixed by using k and t, if the transmitting end UE transmits only once to the TB, that is, only when the initial transmission subframe needs to be indicated, the transmitting end UE indicates one used by k. Data subframe, at which t can be set to a fixed value, or t value indicates no meaning, or does not indicate t value, or t value is null.

The method of indicating the initial transmission subframe index number k and the retransmission interval t will be described below.

(1) Method for indicating initial transmission subframe index number k

The initial transmission subframe index number k may also be referred to as an initial transmission subframe offset, and may be indicated by the UE at the transmitting end by an explicit signaling indication overhead, or may be calculated according to a predefined rule by using related information. For example, the SA resource information used by the UE at the transmitting end, the ID information of the UE at the transmitting end, the number of subframes K included in the TB interval, the number of _D2D subframes included in the TB interval, K _D2D, and the number N of transmissions of the TB, etc. It can be indicated by the following method.

method one

k is indicated by the transmitting end UE in the SA. The time domain indication information of the data channel resource in the SA is T-RPT signaling, and the T-RPT explicitly indicates the k value with a certain bit overhead, and the maximum value range of k is [0, K-1]. Or, k indicates the logical subframe number in the D2D logical subframe sequence, and the maximum value range of k is [0, K _D2D -1].

Example one

The system pre-defines the D2D subframe resource pool, and the transmitting UE indicates the initial transmission subframe index number k in the configured D2D subframe resource pool by T-RPT signaling in the SA, and k is at [0, K _D2D -1 Take any value, indicating the overhead of k is

Take the TB interval K _D2D = 10 as an example, then the required

Further, a k value corresponding to the 4 bit indication overhead may be defined, as shown in Table 1.

The indicated overhead of the display can be very flexible and effective to control the position of the initial transmission subframe of the TB within the TB interval, and achieve any initial subframe configuration in the configured D2D subframe resource pool. This method requires more The indication overhead is used to indicate the initial transmission subframe index number k, which has good configuration indication flexibility.

Table 1

指示bitIndication bit	kk
指示bitIndication bit	kk	00000000	00
00010001	11	00000000	00
00010001	11	00100010	22
00110011	33	00100010	22
00110011	33	01000100	44
01010101	55	01000100	44
01010101	55	01100110	66
01110111	77	01100110	66
01110111	77	10001000	88
10011001	99	10001000	88
10011001	99	1010-11111010-1111	保留Reserved

Example two

The transmitting end UE indicates the initial transmission subframe index number k through T-RPT signaling in the SA, and k takes a partial value in the range of [0, K-1], the system pre-defined to use the 3-bit indication k, and specifies the indication bit and corresponding For the relationship of k values, K=20 is taken as an example, as shown in Table 2.

The indicated overhead of the display can flexibly and effectively control the position of the initial transmission subframe of the TB within the TB interval, and k takes a partial value in all the subframes of the TB interval, and can achieve a flexible initial transmission subframe. The configuration effect, on the other hand, can also reduce the number of control overhead bits. Compared with the method of the first example, the method can reduce the signaling overhead required to indicate k, and at the same time guarantee certain flexibility requirements.

Table 2

指示bitIndication bit	kk
指示bitIndication bit	kk	000000	00
001001	22	000000	00
001001	22	010010	44
011011	66	010010	44
011011	66	100100	88
101101	1212	100100	88
101101	1212	110110	1616
111111	1818	110110	1616

Example three

The transmitting end UE indicates the initial transmission subframe index number k through the T-RPT signaling in the SA, and the value range of k is determined by the TB interval K and the number of transmission times N of the TB, and the value range of the indicated k is

At this time, the UE at the transmitting end does not use more than

Or log ₂ (K-1) bit indicates a k value, and the indicated bit is a binary value corresponding to the k value. Taking K=20 as an example, when the number of transmissions of the TB is configured as N=4, then k∈[0, 4], the transmitting end UE uses 3 bits to indicate the initial transmission subframe index number k, as shown in Table 3.

table 3

指示bitIndication bit	kk
指示bitIndication bit	kk	000000	00
001001	11	000000	00
001001	11	010010	22
011011	33	010010	22
011011	33	100100	44
101-111101-111	保留Reserved	100100	44

Example four

The eNB configures the D2D subframe resource pool by using system broadcast signaling, and the UE at the transmitting end indicates the initial transmission subframe index number k in the configured D2D subframe resource pool by T-RPT signaling in the SA, and the value range of k Determined by the number of D2D subframes K _D2D configured in the TB interval and the number N of transmissions of the TB, the range of the indicated k is

At this time, the UE at the transmitting end does not use more than

Or log ₂ (K _D2D -1) bit indicates a k value, and the indicated bit is a binary value corresponding to the k value. Taking K _D2D = 20 as an example, when the number of transmissions of the TB is configured as N=4, then k ∈ [0, 4], the transmitting end UE uses 3 bits to indicate the initial transmission subframe index number k, as shown in Table 4.

Table 4

Example five

At this time, the transmitting end UE uses a value of not more than 4 bits to indicate a k value, and the indicated bit is a binary value corresponding to the k value. Taking K=80 as an example, when the number of transmissions of the TB is configured as N=4, then k∈[0,15], the transmitting end UE uses 4 bits to indicate the initial transmission subframe index number k, and the indication bit value corresponds to k. Binary representation.

Method Two

k is determined by the SA resource information used by the transmitting end UE and the TB interval K or the number of _D2D subframes K _D2D included in the TB interval:

k=(SA index)modK, or

k=(SA index)modK _D2D

The SA index indicates the resource index number of the SA resource used by the UE at the transmitting end.

Example six

The transmitting end UE implicitly indicates the initial transmission subframe index number k by using the used SA resource index, and the system defines the relationship between the SA index and the TB interval K and the k value, so that the transmitting end UE does not need any indication signaling, that is, The initial subframe position information of the TB to be transmitted is indicated to the receiving UE. Here SA index refers to the UE at the transmitting end. The channel index of the used SA resource, channel index, or the RB index corresponding to the SA resource, or other number or label that uniquely indicates the SA resource.

For example, the SA resource used by the transmitting end UE to transmit the SA information corresponds to SA index=35, and the TB interval K=10, then k=(SA index) mod K=5.

The method has the advantages of implicitly indicating the initial transmission subframe index number k, and can achieve a relatively uniform initial transmission subframe indication effect, and ensures that the initial transmission subframe configuration has certain flexibility, and does not need to display indication signaling. Effectively compresses the overhead indicated for data channel resources.

Method three

k is determined by the D2D RNTI and TB interval K of the transmitting UE or the number of _D2D subframes K _D2D included in the TB interval:

k=(UE D2D RNTI) modK, or

k = (UE D2D RNTI) modK _D2D .

Example seven

The transmitting end UE implicitly indicates the initial transmission subframe index number k with its own UE ID, that is, the D2D RNTI, and the system defines the relationship between the RNTI and the D2D subframe number K _D2D and the k value, so that the transmitting UE does not need any indication letter. Therefore, the initial subframe position information of the TB to be transmitted may be indicated to the receiving UE. Here, the transmitting end UE may indicate its own D2D RNTI in the SA information, or may mark its own ID information through a D2D synchronization signal, or a discovery signal or the like.

For example, if K _D2D = 40, the transmitting end UE transmits the SA information to indicate that its RNTI is "1010 0001 1100 1100". Generally, the RNTI is represented by a 16-bit binary number. When k is calculated according to RNTI and K _D2D , the RNTI corresponding is converted into Decimal numbers, further calculated according to the system-defined relationship, then:

k=(RNTI) mod K _D2D =41420 mod 40=20.

Method four

k is determined by the SA resource information used by the transmitting end UE and the TB interval K or the number of _D2D subframes K _D2D , and the number of transmissions N of the TB:

which is,

k is equal to the SA index modulo operation after K is divided by N and rounded down, or

which is,

k is equal to SA index, and K _{D2D is} divided by N and rounded down to perform a modulo operation.

Example eight

The eNB pre-configures the D2D subframe resource pool by using the high-layer signaling, and the UE at the transmitting end implicitly indicates the initial transmission subframe index number k by using the SA resource index, and the system defines the SA index, the number of _D2D subframes, the K _D2D , and the TB transmission times. The relationship between the value of the N and the value of the k is such that the transmitting end UE does not need any indication signaling, that is, the first-order subframe position information of the TB to be transmitted can be indicated to the receiving end UE.

For example, the SA resource used by the UE at the transmitting end corresponds to SA index=17, the number of _D2D subframes is K _D2D =20, and the number of TB transmissions is N=4.

The advantage of this method is that the initial transmission subframe is configured within the maximum available D2D subframe range K _D2D on the one hand, and the configuration of the initial transmission subframe is adapted to the transmission number configuration in consideration of the influence of the TB transmission times on the subframe configuration. A space is reserved for the configuration of the retransmission subframe, so that a relatively uniform and reasonable TB transmission subframe indication effect is achieved as a whole, and the configuration of the initial transmission subframe is flexible and reasonable, and the implicit indication k is also required, and no indication is needed. Signaling can effectively compress the overhead indicated by the data channel resources.

Method five

k is determined by the D2D RNTI, K or D2D subframe number K _{D2D of the} transmitting UE, and the number of transmissions N of the TB:

which is,

k is equal to the transmitting end UE D2D RNTI performs a modulo operation after K is divided by N and rounded down; or

which is,

k is equal to the transmitting end UE D2D RNTI performs a modulo operation on K _D2D divided by N and rounded down.

Example nine

The transmitting end UE implicitly indicates the initial transmission subframe index number k in the D2D RNTI, and the system defines the relationship between the RNTI, the TB interval K, and the TB transmission times N and k values, so that the transmitting end UE does not need any indication signaling, that is, The initial subframe position information of the TB to be transmitted is indicated to the receiving UE.

For example, the UE RNTI of the transmitting end is “0111 0110 1100 1001”, the TB interval is K=40, and the number of TB transmissions is N=4.

The advantage of this method is that on the one hand, the initial transmission subframe is configured in the maximum available subframe range K, and the effect of the TB transmission number on the subframe configuration is also considered, so that the configuration of the initial transmission subframe is adapted to the configuration of the transmission times, Reconfiguring the reserved space of the subframe, so as to achieve a more uniform and reasonable TB transmission subframe indication effect as a whole, and ensuring flexible and reasonable configuration of the initial transmission subframe, and also implicitly indicating k, without indicating indication signaling The overhead of indicating the data channel resource can be effectively compressed.

Method six

k is determined by the SA resource information used by the transmitting end UE and the TB interval K or the number of _D2D subframes K _D2D , and the number N of transmissions of the TB, and the retransmission interval t is determined:

k=(SA index)mod(K-(N-1)*t), ie,

k is equal to SA index modulo the difference between K and (N-1)*t, or

k=(SA index)mod(K _D2D -(N-1)*t), ie,

k is equal to SA index to perform a modulo operation on the difference between K _D2D and (N-1)*t.

Example ten

The transmitting end UE implicitly indicates the initial transmission subframe index number k by using the SA resource index, and the system defines the relationship between the SA index, the TB interval K, the TB transmission number N, and the retransmission interval t and k values, so that the transmitting end The UE does not need any indication signaling, that is, the UE may be instructed to indicate to the receiving UE the initial subframe position information of the TB to be transmitted.

For example, the SA resource used by the UE at the transmitting end corresponds to SA index=17, K=40, the number of TB transmissions is N=4, t=5, then k=(SA index) mod(K-(N-1)*t) =17mod25=17.

The advantage of this method is that the initial transmission subframe is configured within the maximum available subframe range on the one hand, and the influence of the TB transmission times on the subframe configuration is also considered, so that the configuration of the initial transmission subframe is adapted to the configuration of the transmission times. The configuration of the sub-frames is reserved, so that the TB transmission subframe indication effect is more uniform and reasonable, and the configuration of the initial transmission subframe is flexible and reasonable, and the implicit indication k is also required, and the indication signaling is not required to be displayed. The overhead indicated for the data channel resources can be effectively compressed.

Method seven

k is determined by the D2D RNTI of the transmitting UE, the number of K or D2D subframes K _D2D , and the number N of transmissions of the TB, the retransmission interval t:

k=(UE D2D RNTI) mod(K-(N-1)*t), ie,

k is equal to the transmitter UE D2D RNTI modulo the difference between K and (N-1)*t; or

k=(UE D2D RNTI) mod(K _D2D -(N-1)*t), ie,

k is equal to the transmitting end UE D2D RNTI performs a modulo operation on the difference between K _D2D and (N-1)*t.

Example eleven

The system pre-defines the D2D subframe resource pool, and the transmitting UE implicitly indicates the initial transmission subframe index number k by the D2D RNTI, and the system defines the relationship between the RNTI, K _D2D , N, t and k values, so that the transmitting UE does not need to Any indication signaling, that is, the initial UE position information of the TB to be transmitted may be indicated to the receiving UE.

For example, the transmitting end UE RNTI is "0110 0101 1111 1001", the D2D subframe number K _D2D = 30, the TB transmission number N=4, t=4, then k=(UE D2D RNTI) mod(K _D2D -(N- 1) *t) = 26105 mod 18 = 5.

Method eight

In the method for obtaining the initial transmission subframe index number k implicitly by the various methods described in the foregoing method 2 to method 7, the offset indication amount Δk may be further superimposed as the initial transmission subframe index number k, that is, the final transmission subframe index number k, that is,

k=k+△k

The offset indication quantity Δk is indicated by the transmitting end UE in the control indication signaling, and the control indication signaling is a device-to-device D2D scheduling configuration signaling, or D2D SA T-RPT signaling.

Example twelve

The transmitting end UE implicitly indicates the initial transmission subframe index number k through the used SA resource index, and indicates the TB interval K, the TB transmission number N, the retransmission interval t, and the offset indication by 2 bits in the T-RPT signaling, respectively. Quantity □k. k is implicitly indicated by the SA PRB index according to a predefined relationship.

The transmitting end UE determines k=9 according to the RPB index of the SA resource used, and Δk=2 indicated by 2 bits in the T-RPT, and the k value determined according to the implicit index relationship is further superposed with Δk, that is, k= k + Δk = 11, the transmitting UE finally transmits the TB for the first time with the initial transmission subframe index number k=11.

(2) Indication method of retransmission interval t

The retransmission interval t may be indicated by the UE at the transmitting end through an explicit signaling overhead, or may be determined according to a pre-defined rule of the information, or determined by a fixed value of the system, and may be indicated by the following method.

method one

t indicates by the transmitting end UE in the SA that the time domain indication information of the data channel resource in the SA is T-RPT signaling, and the T value is explicitly indicated by the T-RPT with a certain bit overhead.

Example thirteen

The transmitting end UE indicates the retransmission interval t through the T-RPT signaling in the SA, and the system pre-defines the correspondence between the indication bit and the t value. For different numbers of indication bit overheads, different correspondences may be defined correspondingly, and the indication cost is For 1/2/3/4bit, the corresponding t values are shown in Table 5, Table 6, Table 7, and Table 8, respectively.

The indicated overhead of the TB retransmission subframe and the initial transmission subframe can be flexibly and effectively controlled to achieve a flexible retransmission subframe configuration effect. This method requires a certain control indication bit overhead, and the specific overhead can be Determine according to system requirements.

table 5

1bit indication

t

00	11
00	11	11	44

Table 6

2bit指示2bit indication	tt
2bit指示2bit indication	tt	0000	11
0101	22	0000	11
0101	22	1010	44
1111	88	1010	44

Table 7

3bit指示3bit indication	tt
3bit指示3bit indication	tt	000000	11
001001	22	000000	11
001001	22	010010	33
011011	44	010010	33
011011	44	100100	55
101101	66	100100	55
101101	66	110110	77
111111	88	110110	77

Table 8

4bit指示4bit indication	tt
4bit指示4bit indication	tt	00000000	11
00010001	22	00000000	11
00010001	22	00100010	33
00110011	44	00100010	33
00110011	44	01000100	55
01010101	66	01000100	55
01010101	66	01100110	77
01110111	88	01100110	77
01110111	88	10001000	99
10011001	1010	10001000	99
10011001	1010	1010-11111010-1111	保留Reserved

Method Two

t determines a fixed value for the system specification.

For example, if the system fixed retransmission interval t=4, the transmitting end UE only needs to indicate the initial transmission subframe index number k, and further according to the fixed t=4, it can indicate the initial transmission and the weight of the data channel resource of the transmission TB. Pass the sub-frame position.

The advantage of this method is that no signaling overhead is required to indicate the retransmission interval t, the overhead indicated for the data channel resources can be effectively compressed, and the unique fixed t value is advantageous for simplifying the resource scheduling configuration.

Method three

t is indicated by the high layer signaling configuration by the network side. For example, the eNB indicates the retransmission interval t through the system broadcast message SIB or the RRC message, and the t value indicated by the high layer signaling has a semi-static configuration effect and remains unchanged for a certain time range. Here, the network side includes one or more of the following entities: an evolved base station eNB, a cell cooperative entity MCE, a gateway GW, a mobility management device MME, an evolved universal terrestrial radio access network EUTRAN, an operation management and maintenance OAM manager. .

Example fourteen

The eNB performs configuration indication on the D2D communication related resource in the SIB message, where the retransmission interval t=2 is indicated, the transmitting end UE indicates the initial transmission subframe index number k, and the TB can be further indicated according to the fixed t=2. The initial transmission and retransmission subframe positions where the data channel resources are located.

The method has the advantages that the physical layer signaling overhead is not required to indicate the retransmission interval t, and the overhead of indicating the data channel resource can be effectively compressed. At the same time, the retransmission interval t can be semi-statically adjusted through the high layer signaling, so that the t value has a certain value. Configurability, and the unified t value of the cell is beneficial to simplify resource scheduling configuration.

Method four

t is determined according to the number N of transmissions of the TB. According to the specific value of N, the system pre-defines the correspondence between N and t, thereby determining the specific value of t.

Example fifteen

The system defines the correspondence between N and t. Some examples are shown in Table 9-Table 17. The UE at the transmitting end can determine the corresponding value of t according to the predefined rule according to the number N of transmissions of the TB.

The advantage of this method is that no signaling overhead is required to indicate the retransmission interval t, the overhead of indicating the data channel resource can be effectively compressed, and the corresponding retransmission interval t is determined according to the number N of transmissions of the TB, so that the value of t can be It varies with the number of transmission subframes required, and has strong adaptability and flexibility.

Table 9

TB的传输次数NTB transmission times N		tt
TB的传输次数NTB transmission times N		tt	22	44
44	22		22	44
44	22	88	11

Table 10

TB的传输次数NTB transmission times N		tt
TB的传输次数NTB transmission times N		tt	22	88
44	44		22	88
44	44	88	11

Table 11

TB的传输次数NTB transmission times N		tt
TB的传输次数NTB transmission times N		tt	22	88
44	44		22	88
44	44	88	22

Table 12

TB的传输次数NTB transmission times N		tt
TB的传输次数NTB transmission times N		tt	22	33
44	22		22	33
44	22	88	11

Table 13

TB的传输次数NTB transmission times N		tt
TB的传输次数NTB transmission times N		tt	22	55
44	33		22	55
44	33	88	22

Table 14

TB的传输次数NTB transmission times N		tt
TB的传输次数NTB transmission times N		tt	22	44
44	11		22	44

Table 15

TB的传输次数NTB transmission times N		tt
TB的传输次数NTB transmission times N		tt	22	44
44	22		22	44

Table 16

TB的传输次数NTB transmission times N		tt
TB的传输次数NTB transmission times N		tt	22	22
44	11		22	22

Table 17

TB的传输次数NTB transmission times N		tt
TB的传输次数NTB transmission times N		tt	22	88
44	44		22	88

Method five

t is determined according to the number of transmissions N of the TB and the TB interval K or the number of _D2D subframes K _D2D ,

or

Example sixteen

The transmitting end UE is based on the pre-defined relationship according to the number of transmissions N of the TB and the interval K of the TB.

Implicitly indicates the specific value of t. For example, when the TB interval is K=80, when N=4, then t=20, when N=2, t=40.

The method has the advantages that no signaling overhead is required to indicate the retransmission interval t, and the overhead indicated by the data channel resource can be effectively compressed, and the corresponding retransmission interval t is determined according to the number of transmission times N of the TB and the TB interval K, so that the t value is obtained. It can be changed with the number of required transmission subframes and the maximum number of available subframes, and has strong adaptability and flexibility.

The various methods for determining the initial transmission subframe index number k and the retransmission interval t are respectively described above. Further, various methods for k and t can be used arbitrarily in a non-conflicting condition, and further reference will be made to the accompanying drawings. The invention will be described in detail in conjunction with the embodiments.

Example seventeen

The transmitting end UE explicitly indicates the initial transmission subframe index number k and the retransmission interval t in the SA by signaling, and transmits the TB to be transmitted on the indicated data subframe.

The transmitting end UE indicates k=5, t=4, and the TB interval K=20 in the T-RPT information in the SA, and the number of transmissions of the TB is N=4, and the data corresponding to the TB transmission is indicated by the indication of k, t. The channel sub-frame resource is shown in FIG. 7. The transmitting end UE performs initial transmission of the TB in subframe #5, and performs retransmission three times in subframe #9, #13, and #17, respectively.

Example 18

The system pre-configured the D2D subframe resource pool, and the transmitting UE indicates the retransmission interval t for the D2D logical subframe sequence by signaling in the SA, and the initial transmission subframe index number k is used by the UE UE for the SA resource index and the D2D sub-frame. The number of frames K _{D2D is} determined (as described in method 2) and the TB to be transmitted is transmitted on the indicated data subframe.

The SA index=9 of the transmitting UE, the t-RPT information in the SA indicates t=3, and the number of _D2D subframes is K _D2D =16, the number of transmissions of TB is N=2, then k=(SA index) mod K _D2D =9, combined with the indication of t=3, the data channel subframe resource corresponding to the TB transmission is as shown in FIG. 8. In the D2D logical subframe sequence, the logical initial transmission subframe is subframe #9, and the logical retransmission subframe is For subframe #12, corresponding to the actual physical subframe, the transmitting UE performs initial transmission of TB in subframe#11 and retransmits in subframe#16.

Example 19

The initial transmission subframe index number k is determined by the SA resource index used by the transmitting UE, the TB interval K, and the number N of transmissions of the TB (as described in Method 4), and the retransmission interval t is determined according to the relationship between the configured N and Table 9. The UE does not need any signaling indications k and t, so that the subframe resource indication of the data resource can be implemented, and the TB to be transmitted is sent on the indicated data subframe.

The UE of the transmitting end has SA index=26, the TB interval is K=40, and the number of transmissions of TB is N=4.

According to Table 9, t=2 is obtained, and the corresponding data channel subframe resource of the TB transmission is as shown in FIG. 9. The transmitting UE performs initial transmission of the TB in subframe#6, and respectively in subframe#8, #10, #12 respectively. Perform three retransmissions.

Example twenty

The initial transmission subframe index number k is determined by the RNTI of the transmitting UE, the TB interval K, and the number N of transmissions of the TB (as described in Method 5), and the retransmission interval t is determined according to the relationship between the configured N and Table 10, and the transmitting end The UE does not need any signaling indications k and t to implement the subframe resource indication of the data resource, and sends the TB to be transmitted on the indicated data subframe.

The RNTI of the UE at the transmitting end is "0111 1000 0010 1001", the TB interval is K=40, and the number of transmissions of TB is N=8.

According to the table 10, t=1, the data channel subframe resource corresponding to the TB transmission is as shown in FIG. 10, and the transmitting UE performs initial transmission of the TB in the subframe#1, and performs the continuous 7 subframes from the subframe#2. Seven retransmissions.

Example twenty one

The transmitting end UE explicitly indicates the initial transmission subframe index number k by signaling in the SA, where

(As described in Method 1), t is determined according to the number of transmissions N of the TB and the interval K of the TB,

(As described in Method 5), and transmitting the TB to be transmitted on the indicated data subframe.

The transmitting end UE indicates the TB interval K=20 in the T-RPT of the SA, the number of transmissions of the TB is N=2, then t=10, and the value of k ranges from k∈[0,9], where the transmitting end UE indicates k=7. As indicated by k, t, the data channel subframe resource corresponding to the TB transmission is as shown in FIG. 11. The transmitting UE performs initial transmission of the TB in subframe #7 and retransmits in subframe#17.

(3) Comprehensive indication method

In addition to the foregoing methods for determining the initial transmission subframe index number k and the retransmission interval t, the initial indication subframe index number k and the retransmission interval t may be indicated by a unified indication information: a resource configuration index number Resource Index. The Resource Index indicates in the control indication signaling that the control indication signaling is D2D scheduling configuration signaling or D2D SA T-RPT signaling.

The system pre-defines the resource configuration table. The Resource Index i in the table reflects the result of the joint encoding of the TB interval K, the number of transmissions N of the TB, and the initial transmission subframe index number k (or the initial transmission subframe reference value k ₀ ). That is to say, an arbitrary set of [K, N, k(k ₀ )] takes a value and uniquely corresponds to one Resource Index i. At the same time, by controlling the value of i indicated by the indication signaling, a unique set of [K, N, k(k ₀ )] values may also be determined based on the resource configuration table.

For a combination of arbitrary TB intervals and TB transmission times [K, N], different initial transmission subframe index numbers k and retransmission intervals t correspond to different subframe configuration patterns. Due to the different [K, N] use effects in the actual system operation and the corresponding scenarios and requirements, the applicability and frequency of use of various [K, N] values are different, so in the resource configuration table A different number of Resource Index i should be defined for different [K, N] values, that is, for different [K, N] configurations, including different numbers of subframe configurations, making the more commonly used [K, N] The configuration contains more sub-frame configuration patterns, while the less used [K,N] configuration allows fewer sub-frame configuration patterns to be defined in the table to take advantage of the limited Resource Index i indications. The effect of flexible and efficient sub-frame resource indication.

method one

The system pre-defines the resource configuration table. Based on the resource configuration table, the transmitting UE can indicate k and t by using a unique indication parameter: Resource Index i. The resource configuration table defines a unique corresponding TB interval K, a number of transmission times N of the TB, and an initial transmission subframe index number k, that is, the Resource Index i can directly obtain K and N from the resource configuration table. And k value, further, the retransmission interval t is determined by K, N:

The retransmission interval t is obtained as above, and the transmission interval between multiple transmissions of the TB to be transmitted can be maximized within a valid TB transmission interval, thereby providing a more efficient time diversity gain.

Example twenty two

The system predefined resource configuration table is shown in Table 18:

Table 18

The transmitting end UE indicates the resource configuration index i=117 by signaling in the SA, and according to the resource configuration table, taking Table 18 as an example, the TB interval K=40, the TB transmission number N=4, and the initial transmission subframe index number. k=2, further, the indicated retransmission interval

The data channel subframe resource corresponding to the TB transmission is as shown in FIG. 12, and the transmitting end performs initial transmission of the TB on the indicated subframe#2, and performs three retransmissions on subframes #12, #22, and #32, respectively.

Method Two

The system pre-defines the resource configuration table. Based on the resource configuration table, the transmitting UE can indicate k and t by using a unique indication parameter: Resource Index i. The resource configuration table defines a unique corresponding TB interval K, a number of transmission times N of the TB, and an initial transmission subframe reference value k ₀ , that is, the Resource Index i can directly obtain K from the resource configuration table. N and k ₀ values.

In addition, the D2D subframe resource pool is pre-defined or pre-configured by the system, or the network side indicates the D2D subframe resource pool by the high-layer signaling. Further, the retransmission interval t is determined by the number of D2D subframes K _D2D and N in the TB interval, and the initial transmission is performed. The subframe index number k is determined by k ₀ and t:

k=k ₀ modt.

Wherein, the retransmission interval t is obtained as above, and the transmission interval between multiple transmissions of the to-be-transmitted TB can be maximized within a valid D2D subframe configuration, thereby providing a more efficient time diversity gain, and the initial transmission subframe index The number k is obtained as above, and the initial transmission subframe can be guaranteed to be a D2D subframe, and the initial transmission subframe position is determined according to the number of transmissions and the transmission interval, thereby providing an adaptive subframe configuration effect.

Example twenty three

The system predefined resource configuration table is shown in Table 19:

Table 19

The eNB configures the D2D subframe resource pool by using the system broadcast message, and the UE at the transmitting end indicates the resource configuration index i=99 by using the signaling in the SA. According to the resource configuration table, Table 19 is taken as an example, and the TB interval is K=40, TB. The number of transmissions N=2, the initial transmission subframe reference value k ₀ =9, and the D2D subframe configuration in the TB interval is as shown in FIG. 13, and the number of _D2D subframes is K _D2D =12. Further, the indicated retransmission interval

The initial transmission subframe index number k=k ₀ modt=3, the data channel subframe resource corresponding to the TB transmission is as shown in FIG. 13 , in the D2D logical subframe sequence, the logical initial transmission subframe is subframe #3, logic The retransmission subframe is subframe #9, corresponding to the actual physical subframe, and the transmitting UE performs initial transmission of the TB in subframe#6, and retransmits in subframe#29.

According to an embodiment of the present invention, a data receiving method is also provided.

FIG. 14 is a flowchart of a data receiving method according to an embodiment of the present invention. As shown in FIG. 14, the method mainly includes the following steps:

Step S1402: The second UE determines, by using the initial transmission subframe index number k or by using the initial transmission subframe index number k and the retransmission interval t, a subframe in which the data channel resource is located, and k, t is a non-negative integer.

Step S1404: The second UE receives the data transmission block TB on a subframe in which the data channel resource is located.

In an optional implementation manner of the embodiment of the present invention, the second UE may determine, by using the initial transmission subframe index number k, one subframe in which the data channel resource is located; or, by using the initial transmission subframe index number And the retransmission interval t determines one or N subframes in which the data channel resource is located, and N is an integer greater than 1; further, the second UE receives data transmission in a subframe where the data channel resource is located Block TB; or, the second UE receives N times of transmission of the TB in N subframes where the data channel resource is located, where N is the number of transmissions of the TB.

In an optional implementation manner of the embodiment of the present invention, the determining, by the second UE, the subframe in which the data channel resource is located, includes: the second UE, according to the initial transmission, within the TB interval corresponding to the TB to be received The frame index number k, or the initial transmission subframe index number k and the retransmission interval t determine the one or N subframes, wherein the TB interval refers to a maximum subframe range usable for receiving the TB Contains K subframes, K is greater than or equal to N, and K is a positive integer.

In an optional implementation manner of the embodiment of the present invention, determining, by using the initial transmission subframe index number k, that the first transmission subframe #k of the TB is received within the TB interval for the first time, where The starting subframe of the TB interval is denoted as subframe #0, and the initial subframe #k refers to the kth subframe after the starting subframe, k ∈ [0, K-1].

In an optional implementation manner of the embodiment of the present invention, the N-1 retransmissions of the TB are received within the TB interval by using the retransmission interval t based on the initial transmission subframe #k. Retransmit subframe #m, where m = k + t * n, n ∈ [1, N - 1].

In an optional implementation manner of the embodiment of the present invention, the initial transmission subframe index number k is used to determine, for the first time, the first transmission subframe #k _{D2D of} the TB is received within the TB interval, where the The K _D2D devices are included in the TB interval to the device D2D subframe, K _D2D ≤ K, and the K _D2D D2D subframes are sequentially connected to form a logical sub-frame sequence, which are respectively recorded as subframes [#0,...,#K _D2D -1]; the initial transmission subframe index number k indicates a logical initial transmission subframe #k in the logical subframe sequence, and further, according to a distribution of the D2D subframe within the TB interval, determining The logical initial transmission subframe #k corresponds to the physical initial transmission subframe #k _D2D ; the number of the D2D subframes included in the TB interval K _D2D and the subframe position are indicated by a system pre-defined or higher layer signaling configuration.

In an optional implementation manner of the embodiment of the present invention, based on the initial transmission subframe #k _D2D , determining, by the retransmission interval t, receiving N-1 weights of the TB retransmission within the TB interval Passing sub-frame #m _D2D , wherein the K _D2D D2D sub-frames are sequentially connected to form a logical sub-frame sequence [#0,...,#K _D2D -1], according to the logical initial transmission subframe #k and the The retransmission interval t determines the logical retransmission subframe #m, m=k+t*n, n∈[1, N-1], and further, according to the distribution of the D2D subframe within the TB interval, The logical retransmission subframe #m corresponds to the physical retransmission subframe #m _D2D .

In an optional implementation manner of the embodiment of the present invention, the second UE determines, by using the initial transmission subframe index number k and the retransmission interval t, a retransmission interval when one subframe of the used data channel resource is determined. t is a fixed value, or the t value indicates no meaning, or the t value indication is not obtained, or the indicated t value is null.

In an optional implementation manner of the embodiment of the present invention, the second UE obtains the initial transmission subframe index number k and/or the retransmission interval t in the control indication signaling sent by the first UE, where The control indication signaling is device-to-device D2D scheduling configuration signaling, or the D2D scheduling indicates time domain resource pattern transmission (T-RPT) signaling in the SA signaling, the first UE is the control indication signaling and The transmitting end of the TB.

In an optional implementation manner of the embodiment of the present invention, the second UE obtains the initial transmission subframe index number k in the control indication signaling sent by the first UE, where the initial transmission subframe index number The maximum value of k is determined by the TB interval K and the number of transmissions N of the TB. The value of the initial transmission subframe index number k is greater than or equal to zero, and is less than the integer value of K divided by N rounded down. Or a value greater than or equal to zero, and less than K divided by N, and determined to be a smaller value, and an integer is taken; or, the maximum value of the initial transmission subframe index number k is separated by the TB The number of the D2D subframes K _D2D included in the TD and the number N of transmissions of the TB are determined, and the value of the initial transmission subframe index number k is greater than or equal to zero, and is less than K _D2D divided by N rounded down Integer value; or a value greater than or equal to zero, and less than K _D2D divided by N rounded down to determine the value and the smaller of 15, take an integer.

In an optional implementation manner of the embodiment of the present invention, the second UE determines the initial transmission subframe index number k according to any one or more of the following information: the received resource of the control indication channel Information, the ID information of the first UE, the number of subframes K included in the TB interval, the number of _D2D subframes K _D2D included in the TB interval, the number of transmissions N of the TB, the retransmission Interval t.

In an optional implementation manner of the embodiment of the present invention, the initial transmission subframe index number k is the resource information of the control indication channel used by the first UE, and the number of subframes K included in the TB interval or the Determining the number of D2D subframes K _D2D , where k is a value obtained by performing a modulo operation on the resource index number SA index of the control indication channel for K; or k is a resource index number SA index of the control indication channel for K _D2D The value obtained by the modulo operation.

In an optional implementation manner of the embodiment of the present invention, the initial transmission subframe index number k is the ID of the first UE and the number of subframes K included in the TB interval or the number of the D2D subframes K _D2D Determining, wherein k is a value obtained by performing a modulo operation on a K of the first UE's UE Radio Network Temporary Identity RNTI or D2D RNTI; or k is a UE RNTI or D2D RNTI of the first UE The value obtained by performing a modulo operation on K _D2D .

In an optional implementation manner of the embodiment of the present invention, the initial transmission subframe index number k is used by the first UE to control resource information of the channel, the number of subframes KK included in the TB interval, or the The D2D subframe number K _D2D , and the number of transmissions N of the TB are determined, where k is a value obtained by performing a modulo operation on the SA index of the control indication channel by K divided by the N rounded value; or k is The control indicates that the SA index of the channel is a value obtained by modulo K _D2D divided by N rounded down values.

In an optional implementation manner of the embodiment of the present invention, the initial transmission subframe index number k is used by the first UE, the resource information of the control indication channel, the number of subframes K included in the TB interval, or the The number of D2D subframes K _D2D , the number N of transmissions of the TB, and the retransmission interval t are determined, where k=(SA index) mod(K-(N-1)*t); or k=(SA Index) mod(K _D2D -(N-1)*t).

In an optional implementation manner of the embodiment of the present invention, the initial transmission subframe index number k is the ID of the first UE, the number of subframes K included in the TB interval, or the number of the D2D subframes K _D2D And determining, by the number of transmissions N of the TB, where k is a value obtained by modulo-calculating a value of K divided by N rounded down by a UE RNTI or a D2D RNTI of the first UE; or k is the The value obtained by the UE RNTI or D2D RNTI of the first UE modulo K _D2D divided by the N rounded down value.

In an optional implementation manner of the embodiment of the present invention, the initial transmission subframe index number k is the ID of the first UE, the number of subframes K included in the TB interval, or the number of the D2D subframes K _D2D The number of transmissions N of the TB, and the retransmission interval t are determined, where k=(UE D2D RNTI) mod(K−(N−1)*t), where the UE D2D RNTI is the first UE's UE RNTI or D2D RNTI; or k = (UE D2D RNTI) mod (K _D2D - (N-1) * t).

In an optional implementation manner of the embodiment of the present invention, the initial transmission subframe index number k further superimposes the offset indication amount □k as the updated initial transmission subframe index number k, where the offset indication The quantity □k is indicated by the first UE in the control indication signaling, and the control indication signaling is a device-to-device D2D scheduling configuration signaling, or D2D SA T-RPT signaling.

In an optional implementation manner of the embodiment of the present invention, the second UE receives 1 or 2 or 3 or 4 bit information from the control indication signaling of the first UE, and indicates the retransmission interval t.

In an optional implementation manner of the embodiment of the present invention, the retransmission interval t is a unique fixed value, which is determined by a system specification; or the retransmission interval t is indicated by a network side through a high layer signaling configuration, where The network side includes one or more of the following entities: an evolved base station eNB, a cell cooperative entity MCE, a gateway GW, and a mobile The MME, the Evolved Universal Terrestrial Radio Access Network (EUTRAN), the Operation Management and Maintenance OAM Manager.

In an optional implementation manner of the embodiment of the present invention, the retransmission interval t is determined according to the number N of transmissions of the TB, and the retransmission interval t may be uniquely determined by a specific value of N and a predefined rule. The specific value.

In an optional implementation manner of the embodiment of the present invention, a predefined rule for determining the retransmission interval t according to the number N of transmissions of the TB is:

When N=2, t=4, when N=4, t=2, when N=8, t=1; or,

When N=2, t=8, when N=4, t=4, when N=8, t=1; or,

When N=2, t=8, when N=4, t=4, when N=8, t=2; or,

When N=2, t=3, when N=4, t=2, when N=8, t=1; or,

When N=2, t=5, when N=4, t=3, when N=8, t=2; or,

When N=2, t=4, when N=4, t=1, or

When N=2, t=4, when N=4, t=2, or

When N=2, t=2, when N=4, t=1, or

When N=2, t=8, when N=4, t=4.

In an optional implementation manner of the embodiment of the present invention, the retransmission interval t is determined according to the TB interval K or the number of _D2D subframes K _D2D and the number of transmissions N of the TB, where the weight The pass interval t is equal to K divided by an integer value rounded down by N; or the retransmission interval t is equal to K _D2D divided by an integer value rounded down by N.

In an optional implementation manner of the embodiment of the present invention, the second UE determines, according to the resource configuration index number Resource Index i indicated in the control indication signaling sent by the first UE, and a predefined resource configuration table. The initial transmission subframe index number k and the retransmission interval t are described.

In an optional implementation manner of the embodiment of the present invention, the control indication signaling is device-to-device D2D scheduling configuration signaling, or D2D SA T-RPT signaling.

In an optional implementation manner of the embodiment of the present invention, the resource configuration table defines a TB interval K corresponding to the resource configuration index number i, a number N of transmissions of the TB, and an initial transmission subframe index number k. Further, the retransmission interval t is determined according to the TB interval K and the number of transmissions N of the TB, where t is equal to an integer value in which K is divided by N and rounded down.

In an optional implementation manner of the embodiment of the present invention, the resource configuration table defines a TB interval K corresponding to the resource configuration index number i, a number N of transmissions of the TB, and an initial transmission subframe reference value k. _0. Further, the retransmission interval t is determined according to the number of D2D subframes K _D2D included in the TB interval and the number N of transmissions of the TB, where t is equal to K _D2D divided by N rounded down An integer value; the initial transmission subframe index number k is determined according to the retransmission interval t and the initial transmission subframe reference value k ₀ , where k is equal to a value obtained by performing a modulo operation on k ₀ for t.

According to an embodiment of the present invention, there is further provided a data transmitting apparatus, wherein the apparatus corresponds to the data sending method, and the apparatus can complete data transmission according to the description of the foregoing method.

FIG. 15 is a schematic structural diagram of a data sending apparatus according to an embodiment of the present invention. As shown in FIG. 15, the method mainly includes: a determining module 1502, configured to initially transmit a subframe index number k, or the initial transmission subframe index number. k and the retransmission interval t determine the subframe in which the data channel resource is located, k, t is a non-negative integer; the transmitting module 1504 is configured to transmit the data transmission block TB on the subframe in which the data channel resource is located.

In an optional implementation manner of the embodiment of the present invention, the determining module is configured to determine, by using the initial transmission subframe index number k, a subframe in which the data channel resource is located or by using the initial transmission subframe index number The k and the retransmission interval t determine N subframes in which the data channel resource is located, where N is an integer greater than 0; the transmitting module is configured to transmit the TB or in the subframe in which the data channel resource is located The TB is sent N times in the N subframes where the data channel resource is located, where N is the number of times the TB is transmitted.

In an optional implementation manner of the embodiment of the present invention, the determining module is configured to determine, by using the initial transmission subframe index number k, one subframe in which the data channel resource is located; or through the initial transmission subframe index The number k and the retransmission interval t determine N subframes in which the data channel resource is located, where N is an integer greater than 0; the transmitting module is configured to send the TB in one subframe in which the data channel resource is located Or transmitting the TB N times in the N subframes where the data channel resource is located, where N is the number of times the TB is transmitted.

In an optional implementation manner of the embodiment of the present invention, the apparatus further includes: an indication module, configured to indicate, in the control indication signaling, the initial transmission subframe index number k and/or the retransmission interval t, The control indication signaling is device-to-device D2D scheduling configuration signaling or D2D SA T-RPT signaling.

In an optional implementation manner of the embodiment of the present invention, the determining module is configured to determine, by using the initial transmission subframe index number k, that the first transmission subframe #k of the TB is sent for the first time within a TB interval, where The starting subframe of the TB interval is denoted as subframe #0, and the initial subframe #k refers to the kth subframe after the starting subframe, k∈[0, K-1], K For the TB interval.

In an optional implementation manner of the embodiment of the present invention, the determining module is further configured to determine, according to the initial transmission subframe #k, that the TB is repeatedly sent within the TB interval by using the retransmission interval t N-1 retransmission subframes #m, where N is the number of transmissions of the TB, m=k+t*n, n∈[1, N-1].

In an optional implementation manner of the embodiment of the present invention, the determining module is configured to determine, by using the initial transmission subframe index number k, that the first transmission subframe #k of the TB is sent for the first time within the TB interval. _D2D , wherein the TB interval includes K _D2D devices to device D2D subframes, K _D2D ≤ K, and the K _D2D D2D subframes are sequentially connected to form a logical sub-frame sequence, respectively recorded as a subframe [#0 , ..., _{#K D2D} -1], wherein the initial transmission subframe index number k indicates a logical initial transmission subframe #k in the logical subframe sequence, and then the TB according to the D2D subframe distribution in the interval, the logic determines the initial transmission subframe #k corresponding to the beginning of the physical transmission subframe #k _D2D; _D2D number K and the D2D subframe position within said subframe interval TB comprise predefined by the system or High-level signaling configuration indication.

In an optional implementation manner of the embodiment of the present invention, the determining module is further configured to determine, according to the initial transmission subframe #k _D2D , that the TB is repeatedly sent within the TB interval by using the retransmission interval t N-1 retransmission subframes #m _D2D , wherein the K _D2D D2D subframes are sequentially connected to form a logical sub-frame sequence [#0,...,#K _D2D -1], according to a logical initial transmission Frame #k and the retransmission interval t determine a logical retransmission subframe #m, m=k+t*n, n∈[1, N-1], further, according to the D2D subframe in the TB The distribution within the interval determines the physical retransmission subframe #m _D2D corresponding to the logical retransmission subframe #m.

According to an embodiment of the present invention, there is further provided a data receiving apparatus, the apparatus corresponding to the data receiving apparatus, configured to implement the data receiving method

FIG. 16 is a schematic structural diagram of a data receiving apparatus according to an embodiment of the present invention. As shown in FIG. 16, the method mainly includes: a determining module 1602, configured to initially transmit a subframe index number k, or by using the initial transmission sub- The frame index number k and the retransmission interval t determine the subframe in which the data channel resource is located, k, t are non-negative integers; and the receiving module 1604 is configured to receive the data transmission block TB on the subframe in which the data channel resource is located.

In an optional implementation manner of the embodiment of the present invention, the determining module is configured to determine, by using the initial transmission subframe index number k, a subframe in which a data channel resource is located or by using the initial transmission subframe index number k and The retransmission interval t determines N subframes in which the data channel resource is located, and N is an integer greater than 0; the receiving module is configured to receive the data transmission block TB in one subframe where the data channel resource is located; or The N times of the TB are received in the N subframes where the data channel resource is located, and N is the number of transmissions of the TB.

In an optional implementation manner of the embodiment of the present invention, the determining module is configured to be based on the initial transmission subframe index number k or the initial transmission subframe index within a TB interval corresponding to the TB to be received. The number k and the retransmission interval t determine a subframe in which the data channel resource is located, wherein the TB interval is a maximum subframe range that can be used to receive the TB, and includes K subframes, where K is greater than or equal to N, K Is a positive integer.

In an optional implementation manner of the embodiment of the present invention, the determining module is configured to determine, by using the initial transmission subframe index number k, that the first transmission subframe #k of the TB is received for the first time within a TB interval, where The initial subframe at the TB interval is referred to as subframe #0, and the initial subframe #k refers to the kth subframe after the start subframe, k ∈ [0, K-1].

In an optional implementation manner of the embodiment of the present invention, the determining module is further configured to determine, according to the initial transmission subframe #k, that the TB retransmission is received within the TB interval by using the retransmission interval t N-1 retransmission subframes #m, where m = k + t * n, n ∈ [1, N - 1].

In an optional implementation manner of the embodiment of the present invention, the determining module is configured to determine, by using the initial transmission subframe index number k, that the first transmission subframe #k of the TB is received for the first time within the TB interval. _D2D , wherein the TB interval includes K _D2D devices to device D2D subframes, K _D2D ≤ K, and the K _D2D D2D subframes are sequentially connected to form a logical sub-frame sequence, respectively recorded as a subframe [#0 , ..., _{#K D2D} -1]; the initial transmission subframe index number k indicates a logical initial transmission subframe #k in the logical subframe sequence, and further, according to the D2D subframe in the TB distribution in the interval, the logic determines the initial transmission subframe #k corresponding to the beginning of the physical transmission subframe #k _D2D; _D2D number K and the D2D subframe position within said subframe interval TB comprise predefined by the system or High-level signaling configuration indication.

In an optional implementation manner of the embodiment of the present invention, the determining module is further configured to determine, according to the initial transmission subframe #k _D2D , that the TB is received within the TB interval by using the retransmission interval t N-1 retransmission subframes #m _D2D are transmitted, wherein the K _D2D D2D subframes are sequentially connected to form a logical sub-frame sequence [#0,...,#K _D2D -1], according to the logic initial transmission Subframe #k and the retransmission interval t determine a logical retransmission subframe #m, m=k+t*n, n∈[1, N-1], further, according to the D2D subframe The distribution within the TB interval determines the physical retransmission subframe #m _D2D corresponding to the logical retransmission subframe #m.

In an optional implementation manner of the embodiment of the present invention, the apparatus may further include: an acquiring module, configured to obtain the initial transmission subframe index number k and/or the retransmission interval t from the control indication signaling, The control indication signaling is device-to-device D2D scheduling configuration signaling, or D2D SA T-RPT signaling.

According to an embodiment of the present invention, a data transmission system is further provided, including: a first UE and a second UE, where the first UE includes the foregoing data transmitting device, and the second UE includes the foregoing data. Receiving device.

From the above description, it can be seen that, in the embodiment of the present invention, the data channel subframe used for one or more transmissions of the data block is indicated by the initial transmission subframe index number, or the initial transmission subframe index number and the retransmission interval. The resource enables the transmitting end UE to effectively indicate the used subframe resource, and enables the receiving end UE to effectively obtain the subframe resource configuration of the to-be-received data block, thereby achieving flexible and efficient configuration of the data channel resource and reducing the signaling overhead. effect.

It will be apparent to those skilled in the art that the various modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Industrial applicability

According to the foregoing technical solution provided by the embodiment of the present invention, the data channel subframe resource used for one or more transmissions of the data block is indicated by the initial transmission subframe index number, or the initial transmission subframe index number and the retransmission interval, so that the UE at the transmitting end is enabled. The subframe resource configuration can be effectively indicated, and the receiving UE can effectively obtain the subframe resource configuration of the data block to be received, thereby achieving flexible and efficient configuration of the data channel resource and reducing the signaling overhead.

Claims

A data transmission method includes:

The first user equipment UE determines, by using the initial transmission subframe index number k, or the initial transmission subframe index number k and the retransmission interval t, the subframe in which the data channel resource is located, where k, t are non-negative integers;

The first UE sends a data transmission block TB on a subframe in which the data channel resource is located.
The method of claim 1 wherein

Determining, by the first user equipment UE, one subframe in which the data channel resource is located by using the initial transmission subframe index number k; the first UE sending the TB in one subframe where the data channel resource is located ;or

Determining, by the first user equipment UE, the N subframes in which the data channel resource is located by using the initial transmission subframe index number k and the retransmission interval t, where N is an integer greater than 0; the first UE is in the data The TB is sent N times in the N subframes where the channel resource is located, where N is the number of times the TB is transmitted.
The method according to claim 1, wherein the method further comprises: the first UE indicating a subframe in which the data channel resource is located within a TB interval corresponding to the TB to be sent, where the TB The interval is a maximum subframe range that can be used to transmit the TB, and includes K subframes, where K is a positive integer greater than or equal to the number of transmissions of the TB.
The method according to claim 1, wherein the determining, by the first UE, the subframe in which the data channel resource is located, comprising: determining, by the first UE, the first time within the TB interval by using the initial transmission subframe index number k Sending the initial subframe #k of the TB, where the starting subframe with the TB interval is recorded as subframe #0, and the initial subframe #k refers to the kth subframe after the starting subframe The frame, k ∈ [0, K-1], K is the TB interval.
The method according to claim 4, wherein the determining, by the first UE, the subframe in which the data channel resource is located further comprises: determining, by the first UE, based on the initial transmission subframe #k, by the retransmission interval t Repeatingly transmitting N-1 retransmission subframes #m of the TB within the TB interval, where N is the number of transmissions of the TB, m=k+t*n, n∈[1, N-1 ].
The method according to claim 1, wherein the determining, by the first UE, a subframe in which a data channel resource is located includes:

Determining, by the initial transmission subframe index number k, that the first transmission subframe #k D2D of the TB is sent within the TB interval for the first time, where the TB interval includes K D2D devices Go to the device D2D subframe, K D2D ≤ K, and sequentially connect the K D2D D2D subframes to form a logical subframe sequence, which are respectively recorded as subframes [#0,...,#K D2D -1], wherein The initial transmission subframe index number k indicates a logical initial transmission subframe #k in the logical subframe sequence, and the logical initial transmission subframe is determined according to the distribution of the D2D subframe within the TB interval. The physical initial transmission subframe #k D2D corresponding to k; the number of D2D subframes and the subframe position included in the TB interval are indicated by a system pre-defined or higher layer signaling configuration.
The method according to claim 6, wherein the determining, by the first UE, the subframe in which the data channel resource is located, further comprising: the first UE is based on the initial transmission subframe #k D2D , by the retransmission interval Determining that the N-1 retransmission subframes #m D2D of the TB are repeatedly transmitted within the TB interval, wherein the K D2D D2D subframes are sequentially connected to form a logical subframe sequence [#0,..., On the #K D2D -1], the logical retransmission subframe #m, m=k+t*n, n∈[1, N-1], is determined according to the logical initial transmission subframe #k and the retransmission interval t. Further, the physical retransmission subframe #m D2D corresponding to the logical retransmission subframe #m is determined according to the distribution of the D2D subframe within the TB interval.
The method according to claim 1, wherein, in the case where one subframe in which the used data channel resource is located is determined by the initial transmission subframe index number k and the retransmission interval t, the retransmission interval t is set to be fixed A value, or a value of t, indicates no meaning, or does not indicate a value of t, or the value of t is null.
The method according to claim 1, wherein the method further comprises: the first UE indicating the initial transmission subframe index number k and/or the retransmission interval t in control indication signaling, wherein The control indication signaling is a device-to-device D2D scheduling configuration signaling or a time domain resource pattern transmission T-RPT information in the D2D scheduling indication SA signaling.
The method of claim 9, wherein the first UE indicates the retransmission interval t by 1 or 2 or 3 or 4 bit indication signaling.
The method according to any one of claims 1 to 7, the method further comprising: the first UE indicating the initial transmission subframe index number k in control indication signaling, wherein

The indicated maximum value of the initial transmission subframe index number k is determined by the TB interval K and the number of transmissions N of the TB, and the value of the initial transmission subframe index number k is greater than or equal to zero and less than K divided by N is a rounded integer value; or is greater than or equal to zero, and less than K divided by N is rounded down to determine the value and the smaller of 15, take an integer; or,

Determining the maximum value of the initial transmission subframe index number k is determined by the number of D2D subframes K D2D included in the TB interval and the number of transmissions N of the TB, and the value of the initial transmission subframe index number k The range is greater than or equal to zero, and is less than K D2D divided by N rounded integer value; or is greater than or equal to zero, and less than K D2D divided by N rounded down to determine the value and the smaller of 15, take the integer .
The method according to claim 1, wherein the initial transmission subframe index number k is determined according to at least one of the following information: resource information of a control indication channel used by the first UE, the first UE The ID information, the number of subframes K included in the TB interval, the number of D2D subframes K D2D included in the TB interval, the number of transmissions N of the TB, and the retransmission interval t.
The method according to claim 12, wherein the initial transmission subframe index number k is used by the first UE to control resource information of the channel and the number of subframes K included in the TB interval or the D2D sub- The number of frames K D2D is determined, among them,

k is a value obtained by modulating K by the resource index number SA index of the control indication channel; or

k is a value obtained by performing a modulo operation on the K D2D by the resource index number SA index of the control indication channel.
The method according to claim 12, wherein the initial transmission subframe index number k is determined by an ID of the first UE and a number of subframes K included in the TB interval or the number of D2D subframes K D2D , among them,

k is a value obtained by modulo K of the UE radio network temporary identifier RNTI or D2D RNTI of the first UE; or

k is a value obtained by performing a modulo operation on the K D2D by the UE RNTI or the D2D RNTI of the first UE.
The method according to claim 12, wherein the initial transmission subframe index number k is used by the first UE to control resource information of the channel, the number of subframes K included in the TB interval, or the D2D sub- The number of frames K D2D , and the number of transmissions N of the TB are determined, wherein

k is a value obtained by modulating the value of the resource index number SA index of the control indication channel by dividing K by N rounded down; or

k is a value obtained by performing a modulo operation on the resource index number SA index of the control indication channel by dividing K D2D by the value of N rounded down.
The method according to claim 12, wherein the initial transmission subframe index number k is used by the first UE to control resource information of the channel, the number of subframes K included in the TB interval, or the D2D sub- a frame number K D2D , a number of transmissions N of the TB, and the retransmission interval t are determined, wherein

k=(SA index) mod(K-(N-1)*t), where SA index is a resource index number of the control indication channel; or

k = (SA index) mod (K D2D - (N-1) * t).
The method according to claim 12, wherein the initial transmission subframe index number k is represented by an ID of the first UE, a number of subframes K included in the TB interval, or the number of D2D subframes K D2D , and The number of transmissions N of the TB is determined, wherein

k is a value obtained by modulo-calculating the value of K divided by N rounded down by the UE RNTI or D2D RNTI of the first UE; or

k is a value obtained by performing a modulo operation on the value of K D2D divided by N rounded down by the UE RNTI or D2D RNTI of the first UE.
The method according to claim 12, wherein the initial transmission subframe index number k is determined by an ID of the first UE, a number of subframes K included in the TB interval, or a number of D2D subframes K D2D Determining the number N of transmissions of the TB, and determining the retransmission interval t, wherein

k = (UE D2D RNTI) mod (K - (N - 1) * t), UE D2D RNTI is the UE RNTI or D2D RNTI of the first UE; or

k = (UE D2D RNTI) mod (K D2D - (N-1) * t).
The method according to any one of claims 12-18, wherein the initial transmission subframe index number k further superimposes an offset indication amount Δk as an updated initial transmission subframe index number k, wherein the offset The indication quantity Δk is indicated by the first UE in the control indication signaling, the control indication signaling is a device-to-device D2D scheduling configuration signaling, or the D2D scheduling indication SA signaling in the time domain resource pattern transmission T- RPT signaling.
The method according to claim 1, wherein the retransmission interval t is a unique fixed value determined by a system specification; or the retransmission interval t is indicated by a network side through a high layer signaling configuration, wherein the network The side includes one or more of the following entities: an evolved base station eNB, a cell cooperative entity MCE, a gateway GW, a mobility management device MME, an evolved universal terrestrial radio access network EUTRAN, an operation management and maintenance OAM manager.
The method according to claim 1, wherein the retransmission interval t is determined according to a predefined rule and a number N of transmissions of the TB.
The method according to claim 21, wherein the predefined rule for determining the retransmission interval t according to the number N of transmissions of the TB comprises at least one of the following:

When N=2, t=4, when N=4, t=2, when N=8, t=1; or,

When N=2, t=8, when N=4, t=4, when N=8, t=1; or,

When N=2, t=8, when N=4, t=4, when N=8, t=2; or,

When N=2, t=3, when N=4, t=2, when N=8, t=1; or,

When N=2, t=5, when N=4, t=3, when N=8, t=2; or,

When N=2, t=4, when N=4, t=1, or

When N=2, t=4, when N=4, t=2, or

When N=2, t=2, when N=4, t=1, or

When N=2, t=8, when N=4, t=4.
The method according to claim 1, wherein the retransmission interval t is determined according to a TB interval K or a number of D2D subframes K D2D included in the TB interval, and a number N of transmissions of the TB, wherein

The retransmission interval t is equal to an integer value of K divided by N rounded off; or

The retransmission interval t is equal to K D2D divided by an integer value rounded down by N.
The method according to claim 1, wherein said initial transmission subframe index number k and said retransmission interval t are indicated by a resource configuration index number Resource Index i and a pre-indication indicated by said first UE in control indication signaling The defined resource configuration table is determined.
The method of claim 24, wherein the control indication signaling is device-to-device D2D scheduling configuration signaling, or D2D SA T-RPT signaling.
The method according to claim 24, wherein said resource configuration index number i in said resource configuration table is said TB interval K, said number of transmissions N of said TB, and an initial transmission subframe index number k or initial Coding the coded indication value of the transmission subframe reference value k 0 , ie,

The resource configuration index number i uniquely corresponds to one of the TB interval K, the number of transmissions N of the TB, and the initial transmission subframe index number k or the initial transmission subframe reference value k 0 .
The method according to claim 26, wherein the different values of the combination of the TB interval and the number of transmissions of the TB [K, N] correspond to different numbers of the resource configuration index numbers i.
The method of claim 24, wherein

The resource configuration table defines a TB interval K corresponding to the resource configuration index number i, a number N of transmissions of the TB, and an initial transmission subframe index number k; the retransmission interval t is according to the TB interval K And the number N of transmissions of the TB is determined, where t is equal to the integer value of K divided by N rounded down.
The method of claim 24, wherein

The resource configuration table defines a TB interval K corresponding to the resource configuration index number i, a number N of transmissions of the TB, and an initial transmission subframe reference value k 0 ;

The retransmission interval t is determined according to the number of D2D subframes K D2D included in the TB interval and the number N of transmissions of the TB, where t is equal to K D2D divided by an integer value rounded down by N;

The initial transmission subframe index number k is determined according to the retransmission interval t and the initial transmission subframe reference value k 0 , where k is equal to a value obtained by performing a modulo operation on k 0 for t.
A data receiving method includes:

The second user equipment UE determines the subframe in which the data channel resource is located by using the initial transmission subframe index number k, or by using the initial transmission subframe index number k and the retransmission interval t, where k, t are non-negative integers;

The second UE receives the data transmission block TB on a subframe in which the data channel resource is located.
The method of claim 30, wherein

The second user equipment UE determines, by using the initial transmission subframe index number k, one subframe in which the data channel resource is located, and the second UE receives the data transmission block TB in one subframe in which the data channel resource is located; or,

The second user equipment UE determines, by using the initial transmission subframe index number k and the retransmission interval t, N subframes in which the data channel resource is located, where N is an integer greater than 0, and the second UE is in the data. The N times of the TB are received in the N subframes where the channel resource is located, and N is the number of transmissions of the TB.
The method according to claim 30, wherein the determining, by the second UE, the subframe in which the data channel resource is located, comprises: the second UE according to the initial transmission within a TB interval corresponding to the TB to be received a subframe index number k, or the initial transmission subframe index number k and the retransmission interval t, determining a subframe in which the data channel resource is located, wherein the TB interval is a maximum subframe available for receiving the TB The frame range contains K subframes, K is greater than or equal to N, and K is a positive integer.
The method according to claim 30, wherein the determining, by the second UE, the subframe in which the data channel resource is located comprises: determining, by the second UE, the first reception within the TB interval by using the initial transmission subframe index number k The initial subframe #k of the TB, where the starting subframe with the TB interval is recorded as subframe #0, and the initial subframe #k refers to the kth subframe after the starting subframe , k∈[0, K-1].
The method according to claim 33, wherein the determining, by the second UE, the subframe in which the data channel resource is located, further comprising: determining, at the TB, by the retransmission interval t based on the initial transmission subframe #k The N-1 retransmission subframes #m retransmitted by the TB are received within the interval, where m=k+t*n, n∈[1, N-1].
The method according to claim 30, wherein the determining, by the second UE, the subframe in which the data channel resource is located, the second UE determining, by the initial transmission subframe index number k, within the TB interval Receiving the initial transmission subframe #k D2D of the TB at a time, wherein the TB interval includes K D2D devices to the device D2D subframe, K D2D ≤ K, and the K D2D D2D subframes are sequentially connected to form a logical sub-frame sequence, respectively recorded as a subframe [#0, ..., #K D2D -1]; the initial transmission subframe index number k indicates a logical initial transmission subframe #k in the logical subframe sequence, Further, determining, according to the distribution of the D2D subframes in the TB interval, a physical initial transmission subframe #k D2D corresponding to the logical initial transmission subframe #k; and the D2D sub-object included in the TB interval The number of frames K D2D and the subframe position are indicated by the system predefined or higher layer signaling configuration.
The method according to claim 35, wherein the determining, by the second UE, the subframe in which the data channel resource is located, further comprising: the second UE is based on the initial transmission subframe #k D2D , by the retransmission interval Determining, within the TB interval, receiving the N-1 retransmission subframes #m D2D of the TB retransmission, where the K D2D D2D subframes are sequentially connected to form a logical subframe sequence [#0,... , #K D2D -1], according to the logical initial transmission subframe #k and the retransmission interval t, the logical retransmission subframe #m, m=k+t*n, n∈[1, N-1] Further, the physical retransmission subframe #m D2D corresponding to the logical retransmission subframe #m is determined according to the distribution of the D2D subframe within the TB interval.
The method according to claim 30, wherein the second UE determines a subframe in which the used data channel resource is located by using the initial transmission subframe index number k and the retransmission interval t, and the retransmission interval t is a fixed value. Or the value of t indicates no meaning, or the t value indication is not obtained, or the indicated t value is null.
The method according to claim 30, wherein the second UE obtains the initial transmission subframe index number k and/or the retransmission interval t in control indication signaling sent by the first UE, the control The indication signaling is device-to-device D2D scheduling configuration signaling, or the D2D scheduling indication time-domain resource pattern transmission T-RPT signaling in the SA signaling, the first UE being the control indication signaling and the TB The sender.
The method according to any one of claims 30 to 36, wherein the second UE obtains the initial transmission subframe index number k from the control indication signaling, where

The maximum value of the initial transmission subframe index number k is determined by the TB interval K and the number of transmissions N of the TB. The value of the initial transmission subframe index number k is greater than or equal to zero and less than K divided by N is a rounded integer value; or is greater than or equal to zero, and less than K divided by N is rounded down to determine the value and the smaller of 15, take an integer; or,

The maximum value of the initial transmission subframe index number k is determined by the number of D2D subframes K D2D included in the TB interval and the number N of transmissions of the TB, and the value of the initial transmission subframe index number k The range is greater than or equal to zero, and is less than K D2D divided by N rounded integer value; or is greater than or equal to zero, and less than K D2D divided by N rounded down to determine the value and the smaller of 15, take the integer .
The method according to claim 30, wherein the second UE determines the initial transmission subframe index number k according to at least one of: the received resource information of the control indication channel, the first UE ID information, the number of subframes K included in the TB interval, the number of D2D subframes K D2D included in the TB interval, the number of transmissions N of the TB, and the retransmission interval t.
The method according to claim 40, wherein said initial transmission subframe index number k is received by said resource information of said control indication channel and said number of subframes K or said number of D2D subframes included in said TB interval K D2D is determined, among them,

k is a value obtained by modulating K by the resource index number SA index of the control indication channel; or

k is a value obtained by performing a modulo operation on the K D2D by the resource index number SA index of the control indication channel.
The method according to claim 40, wherein said initial transmission subframe index number k is determined by an ID of said first UE and a number of subframes K or said number of D2D subframes K D2D included in said TB interval, among them,

k is a value obtained by modulo K of the UE radio network temporary identifier RNTI or D2D RNTI of the first UE; or

k is a value obtained by performing a modulo operation on the K D2D by the UE RNTI or the D2D RNTI of the first UE.
The method according to claim 40, wherein the initial transmission subframe index number k is used by the first UE to control resource information of the channel, the number of subframes KK included in the TB interval, or the D2D sub- The number of frames K D2D , and the number of transmissions N of the TB are determined, wherein

k is a value obtained by modulating the value of the resource index number SA index of the control indication channel by dividing K by N rounded down; or

k is a value obtained by performing a modulo operation on the resource index number SA index of the control indication channel by dividing K D2D by the value of N rounded down.
The method according to claim 40, wherein the initial transmission subframe index number k is used by the first UE to control resource information of the channel, the number of subframes K included in the TB interval, or the D2D sub- a frame number K D2D , a number of transmissions N of the TB, and the retransmission interval t are determined, wherein

k=(SA index) mod(K-(N-1)*t), where SA index is a resource index number of the control indication channel; or

k = (SA index) mod (K D2D - (N-1) * t).
The method according to claim 40, wherein said initial transmission subframe index number k is represented by an ID of said first UE, a number of subframes K included in said TB interval, or said number of D2D subframes K D2D , and The number of transmissions N of the TB is determined, wherein

k is a value obtained by modulo-calculating the value of K divided by N rounded down by the UE RNTI or D2D RNTI of the first UE; or

k is a value obtained by performing a modulo operation on the value of K D2D divided by N rounded down by the UE RNTI or D2D RNTI of the first UE.
The method according to claim 40, wherein the initial transmission subframe index number k is determined by an ID of the first UE, a number of subframes K included in the TB interval, or a number of D2D subframes K D2D Determining the number N of transmissions of the TB, and determining the retransmission interval t, wherein

k = (UE D2D RNTI) mod (K - (N - 1) * t), where the UE D2D RNTI is the UE RNTI or D2D RNTI of the first UE; or

k = (UE D2D RNTI) mod (K D2D - (N-1) * t).
The method according to any one of claims 40-46, wherein the initial transmission subframe index number k further superimposes an offset indication amount Δk as an updated initial transmission subframe index number k, wherein the offset The indication quantity Δk is indicated by the first UE in the control indication signaling, and the control indication signaling is a device-to-device D2D scheduling configuration signaling, or D2D SA T-RPT signaling.
The method according to claim 38, wherein the second UE receives 1 or 2 or 3 or 4 bits of information indicating the retransmission interval t from the control indication signaling sent by the first UE.
The method according to claim 30, wherein the retransmission interval t is a unique fixed value, which is determined by a system specification; or the retransmission interval t is indicated by a network side through a high layer signaling configuration, wherein the network side includes At least one of the following entities: an evolved base station eNB, a cell cooperative entity MCE, a gateway GW, a mobility management device MME, an evolved universal terrestrial radio access network EUTRAN, an operation management and maintenance OAM manager.
The method according to claim 30, wherein said retransmission interval t is determined according to a predefined rule and a number N of transmissions of said TB.
The method according to claim 50, wherein said predetermined rule for determining said retransmission interval t according to said number N of transmissions of said TB comprises at least one of the following:

When N=2, t=4, when N=4, t=2, when N=8, t=1; or,

When N=2, t=8, when N=4, t=4, when N=8, t=1; or,

When N=2, t=8, when N=4, t=4, when N=8, t=2; or,

When N=2, t=3, when N=4, t=2, when N=8, t=1; or,

When N=2, t=5, when N=4, t=3, when N=8, t=2; or,

When N=2, t=4, when N=4, t=1, or

When N=2, t=4, when N=4, t=2, or

When N=2, t=2, when N=4, t=1, or

When N=2, t=8, when N=4, t=4.
The method according to claim 30, wherein the retransmission interval t is determined according to a TB interval K or a number of D2D subframes K D2D included in the TB interval, and a number N of transmissions of the TB, wherein

The retransmission interval t is equal to an integer value of K divided by N rounded off; or

The retransmission interval t is equal to K D2D divided by an integer value rounded down by N.
The method according to claim 30, wherein the second UE determines the initial transmission subframe index number according to a resource configuration index number Resource Index i indicated in the control indication signaling and a predefined resource configuration table. k and the retransmission interval t.
The method of claim 53, wherein the control indication signaling is device-to-device D2D scheduling configuration signaling, or D2D SA T-RPT signaling.
The method according to claim 53, wherein said resource configuration index number i in said resource configuration table is said TB interval K, said number of transmissions N of said TB, and an initial transmission subframe index number k or initial Coding the coded indication value of the transmission subframe reference value k 0 , ie,

The resource configuration index number i uniquely corresponds to one of the TB interval K, the number of transmissions N of the TB, and the initial transmission subframe index number k or the initial transmission subframe reference value k 0 .
The method according to claim 55, wherein the different values of the combination of the TB interval and the number of transmissions of the TB [K, N] correspond to different numbers of the resource configuration index numbers i.
The method according to claim 53, wherein the resource configuration table defines a TB interval K corresponding to the resource configuration index number i, a number of transmissions N of the TB, and an initial transmission subframe index number k; The retransmission interval t is determined according to the TB interval K and the number of transmissions N of the TB, where t is equal to the integer value of K divided by N rounded down.
The method according to claim 53, wherein the resource configuration table defines a TB interval K corresponding to the resource configuration index number i, a number N of transmissions of the TB, and an initial transmission subframe reference value k 0 ; The retransmission interval t is determined according to the number of D2D subframes K D2D included in the TB interval and the number N of transmissions of the TB, where t is equal to K D2D divided by an integer value rounded down by N; The initial transmission subframe index number k is determined according to the retransmission interval t and the initial transmission subframe reference value k 0 , where k is equal to a value obtained by performing a modulo operation on k 0 for t.
A data transmitting device includes:

a determining module, configured to determine, by using an initial transmission subframe index number k, or the initial transmission subframe index number k and a retransmission interval t, a subframe in which the data channel resource is located, where k, t are non-negative integers;

And a sending module, configured to send the data transmission block TB on a subframe where the data channel resource is located.
The device according to claim 59, wherein

The determining module is configured to determine, by using the initial transmission subframe index number k, one subframe in which the data channel resource is located; or determine a data channel resource by using the initial transmission subframe index number k and the retransmission interval t N subframes in which N is an integer greater than 0;

The sending module is configured to send the TB in one subframe where the data channel resource is located, or send the TB to N times in the N subframes where the data channel resource is located, where, The number of transmissions for the TB.
The apparatus of claim 59, further comprising:

The indication module is configured to indicate the initial transmission subframe index number k and/or the retransmission interval t in the control indication signaling, where the control indication signaling is a device-to-device D2D scheduling configuration signaling or D2D SA T-RPT signaling.
The apparatus according to claim 59, wherein said determining module is configured to determine, by said initial transmission subframe index number k, that an initial transmission subframe #k of said TB is transmitted for the first time within a TB interval, wherein The starting subframe of the TB interval is denoted as subframe #0, and the initial subframe #k refers to the kth subframe after the starting subframe, k ∈ [0, K-1], K is TB interval.
The apparatus of claim 62, wherein the determining module is further configured to determine, based on the initial transmission subframe #k, that the N of the TB is repeatedly transmitted within the TB interval by the retransmission interval t 1 retransmission subframe #m, where N is the number of transmissions of the TB, m=k+t*n, n∈[1, N-1].
The apparatus of claim 59, wherein the determining module is configured to determine, by the initial transmission subframe index number k, that the first transmission subframe #k D2D of the TB is transmitted for the first time within the TB interval, The TB interval includes K D2D devices to device D2D subframes, K D2D ≤ K, and the K D2D D2D subframes are sequentially connected to form a logical sub-frame sequence, which are respectively recorded as subframes [#0,... , #K D2D -1], wherein the initial transmission subframe index number k indicates a logical initial transmission subframe #k in the logical subframe sequence, and then according to the D2D subframe within the TB interval a distribution of the physical initial transmission subframe #k D2D corresponding to the logical initial transmission subframe #k; the number of the D2D subframes included in the TB interval K D2D and the subframe position are predefined by the system or a high-level letter Order configuration instructions.
The apparatus according to claim 64, wherein said determining module is further configured to determine, based on said initial transmission subframe #k D2D , by said retransmission interval t that said N of said TB is repeatedly transmitted within said TB interval - 1 retransmission subframe #m D2D , wherein the K D2D D2D subframes are sequentially connected to form a logical sub-frame sequence [#0, ..., #K D2D -1], according to the logical initial transmission subframe # And the retransmission interval t determines a logical retransmission subframe #m, m=k+t*n, n∈[1, N-1], and further, according to the D2D subframe, within the TB interval The distribution of the physical retransmission subframe #m D2D corresponding to the logical retransmission subframe #m.
A data receiving device includes:

Determining, by using the initial transmission subframe index number k, or determining, by using the initial transmission subframe index number k and the retransmission interval t, a subframe in which the data channel resource is located, where k, t are non-negative integers;

The receiving module is configured to receive the data transmission block TB on a subframe in which the data channel resource is located.
The device according to claim 66, wherein

The determining module is configured to determine, by using the initial transmission subframe index number k, one subframe in which the data channel resource is located or determine the N where the data channel resource is located by using the initial transmission subframe index number k and the retransmission interval t Subframe, N is an integer greater than 0;

The receiving module is configured to receive the data transmission block TB in one subframe where the data channel resource is located; or receive the N transmissions of the TB in the N subframes where the data channel resource is located, where N is The number of transmissions of TB.
The apparatus according to claim 66, wherein the determining module is configured to be within the TB interval corresponding to the TB to be received according to the initial transmission subframe index number k, or the initial transmission subframe index number k And determining, by the retransmission interval t, a subframe in which the data channel resource is located, wherein the TB interval is a maximum subframe range that can be used to receive the TB, and includes K subframes, where K is greater than or equal to N, and K is positive. Integer.
The apparatus according to claim 66, wherein said determining module is configured to determine, by said initial transmission subframe index number k, an initial transmission subframe #k that receives said TB for the first time within a TB interval, wherein The starting subframe of the TB interval is denoted as subframe #0, and the initial subframe #k refers to the kth subframe after the starting subframe, k ∈ [0, K-1].
The apparatus of claim 69, wherein the determining module is further configured to determine, based on the initial transmission subframe #k, the N that receives the TB retransmission within the TB interval by the retransmission interval t - 1 retransmission subframe #m, where m = k + t * n, n ∈ [1, N - 1].
The apparatus according to claim 66, wherein said determining module is configured to determine, by said initial transmission subframe index number k, that an initial transmission subframe #k D2D of said TB is received for the first time within said TB interval, The TB interval includes K D2D devices to device D2D subframes, K D2D ≤ K, and the K D2D D2D subframes are sequentially connected to form a logical sub-frame sequence, which are respectively recorded as subframes [#0,... , #K D2D -1]; the initial transmission subframe index number k indicates a logical initial transmission subframe #k in the logical subframe sequence, and further, according to the D2D subframe, within the TB interval a distribution of the physical initial transmission subframe #k D2D corresponding to the logical initial transmission subframe #k; the number of the D2D subframes included in the TB interval K D2D and the subframe position are predefined by the system or a high-level letter Order configuration instructions.
The apparatus of claim 71, wherein the determining module is further configured to determine, by the retransmission interval t, that the TB retransmission is received within the TB interval based on the initial transmission subframe #k D2D N-1 retransmission subframes #m D2D , wherein the K D2D D2D subframes are sequentially connected to form a logical subframe sequence [#0, ..., #K D2D -1], according to the logical initial transmission subframe #k and the retransmission interval t determine a logical retransmission subframe #m, m=k+t*n, n∈[1, N-1], further, according to the D2D subframe at the TB interval The inner distribution determines the physical retransmission subframe #m D2D corresponding to the logical retransmission subframe #m.
The apparatus of claim 66, further comprising:

Obtaining a module, configured to obtain the initial transmission subframe index number k and/or the retransmission interval t from the received control indication signaling, where the control indication signaling is a device-to-device D2D scheduling configuration signaling, Or D2D SA T-RPT signaling.
A data transmission system comprising: a first user equipment UE and a second UE, wherein the first UE comprises the apparatus of any one of claims 59 to 65, and the second UE comprises claim 66 to The device of any of 73.