WO2016019724A1 - Procédé, appareil, et système de transmission de données - Google Patents

Procédé, appareil, et système de transmission de données Download PDF

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Publication number
WO2016019724A1
WO2016019724A1 PCT/CN2015/074332 CN2015074332W WO2016019724A1 WO 2016019724 A1 WO2016019724 A1 WO 2016019724A1 CN 2015074332 W CN2015074332 W CN 2015074332W WO 2016019724 A1 WO2016019724 A1 WO 2016019724A1
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subframe
interval
initial transmission
transmission subframe
index number
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PCT/CN2015/074332
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English (en)
Chinese (zh)
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杨瑾
李儒岳
吴栓栓
卢有雄
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中兴通讯股份有限公司
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Publication of WO2016019724A1 publication Critical patent/WO2016019724A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals

Definitions

  • the present invention relates to the field of communications, and in particular to a data transmission method, apparatus, and system.
  • D2D device-to-device
  • UE User Equipment
  • 1 is a schematic diagram of a D2D communication structure according to the related art. As shown in FIG.
  • 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.
  • 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.
  • 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.
  • the evolved base station evolved NodeB
  • 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. .
  • 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.
  • a data sending method 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.
  • 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.
  • 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.
  • 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.
  • 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
  • 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.
  • 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.
  • the first UE indicates the retransmission interval t by using 1 or 2 or 3 or 4 bit indication signaling.
  • 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.
  • 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.
  • 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 .
  • 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.
  • 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.
  • 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 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.
  • the initial transmission subframe index number k further superimposes the offset indication amount ⁇ k as the updated initial transmission subframe index number k, wherein the offset indication amount ⁇ k is used by the first UE
  • the control indication signaling is a device-to-device D2D scheduling configuration signaling, or D2D SA T-RPT signaling.
  • 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.
  • 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.
  • the retransmission interval t is determined according to a predefined rule and a number N of transmissions of the TB.
  • 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.
  • 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.
  • control indication signaling is device-to-device D2D scheduling configuration signaling, or D2D SA T-RPT signaling.
  • 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 .
  • 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 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.
  • 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.
  • a data receiving method 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.
  • 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.
  • 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].
  • 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
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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 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.
  • 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 initial transmission subframe index number k further superimposes the offset indication amount ⁇ k as the updated initial transmission subframe index number k, wherein the offset indication amount ⁇ k is used by the first UE
  • the control indication signaling is a device-to-device D2D scheduling configuration signaling, or D2D SA T-RPT signaling.
  • 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.
  • 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.
  • 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.
  • the retransmission interval t is determined according to a predefined rule and a number N of transmissions of the TB.
  • 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.
  • 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.
  • control indication signaling is device-to-device D2D scheduling configuration signaling, or D2D SA T-RPT signaling.
  • 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 .
  • 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 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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
  • the initial transmission subframe #k refers to the kth subframe after the start subframe, k ⁇ [0, K-1], and K is the TB interval.
  • 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.
  • N is the number of transmissions of the TB
  • m k+t*n, n ⁇ [1, N-1].
  • 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.
  • 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, . . .
  • 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.
  • 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.
  • 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.
  • 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].
  • 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.
  • 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, . . .
  • 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.
  • 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.
  • a data transmission system 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.
  • 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.
  • FIG. 1 is a schematic diagram of a D2D communication structure according to the related art
  • FIG. 2 is a schematic structural diagram of a radio frame of an LTE system
  • FIG. 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
  • FIG. 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
  • FIG. 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
  • Example 7 is a schematic diagram of a subframe resource configuration according to Example 17 of the present invention.
  • Example 8 is a schematic diagram of a subframe resource configuration according to Example 18 of the present invention.
  • Example 9 is a schematic diagram of a subframe resource configuration according to Example 19 of the present invention.
  • Example 10 is a schematic diagram of a subframe resource configuration according to Example 20 of the present invention.
  • FIG. 11 is a schematic diagram of a subframe resource configuration according to an twenty-first embodiment of the present invention.
  • FIG. 12 is a schematic diagram of a subframe resource configuration according to an example 22 of the present invention.
  • FIG. 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. 15 is a schematic structural diagram of a data transmitting apparatus according to an embodiment of the present invention.
  • Figure 16 is a block diagram showing the structure of a data receiving apparatus 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.
  • 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.
  • SA Scheduling Assignment
  • 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.
  • RNTI Radio Network Tempory Identity
  • 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.
  • 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.
  • the SA period is 40 ms, and the transmitting UE transmits 4 TBs in the SA period, and each TB TB.
  • 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.
  • 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.
  • 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.
  • 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 .
  • 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.
  • 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.
  • 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.
  • 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.
  • 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].
  • k indicates the logical subframe number in the D2D logical subframe sequence, and the maximum value range of k is [0, K D2D -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.
  • 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.
  • 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.
  • 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.
  • K D2D -1) bit indicates a k value
  • the indicated bit is a binary value corresponding to the k value.
  • 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 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.
  • 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:
  • the SA index indicates the resource index number of the SA resource used by the UE at the transmitting end.
  • 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.
  • SA index refers to the UE at the transmitting end.
  • 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.
  • 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
  • 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.
  • 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.
  • the transmitting end UE transmits the SA information to indicate that its RNTI is "1010 0001 1100 1100".
  • the RNTI is represented by a 16-bit binary number.
  • the RNTI corresponding is converted into Decimal numbers, further calculated according to the system-defined relationship, then:
  • 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.
  • 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:
  • k is equal to the SA index modulo operation after K is divided by N and rounded down, or
  • K D2D is divided by N and rounded down to perform a modulo operation.
  • 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.
  • 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.
  • 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:
  • k is equal to the transmitting end UE D2D RNTI performs a modulo operation after K is divided by N and rounded down; or
  • k is equal to the transmitting end UE D2D RNTI performs a modulo operation on K D2D divided by N and rounded down.
  • 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.
  • 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.
  • 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 is equal to SA index modulo the difference between K and (N-1)*t, or
  • k is equal to SA index to perform a modulo operation on the difference between K D2D and (N-1)*t.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the offset indication amount ⁇ k may be further superimposed as the initial transmission subframe index number k, that is, the final transmission subframe index number k, that is,
  • the offset indication quantity ⁇ k 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.
  • 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 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.
  • the transmitting end UE in the SA 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.
  • 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.
  • t determines a fixed value for the system specification.
  • 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.
  • 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.
  • 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. .
  • 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.
  • 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.
  • 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.
  • 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.
  • 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
  • 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 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 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.
  • 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 logical initial transmission subframe is subframe #9
  • 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.
  • 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 transmitting UE performs initial transmission of the TB in subframe#6, and respectively in subframe#8, #10, #12 respectively. Perform three retransmissions.
  • 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 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 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.
  • 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.
  • 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.
  • 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.
  • the system predefined resource configuration table is shown in Table 18:
  • 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.
  • 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.
  • 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.
  • 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:
  • 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.
  • the system predefined resource configuration table is shown in Table 19:
  • 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.
  • 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.
  • 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.
  • 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.
  • 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].
  • 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.
  • 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.
  • the logical retransmission subframe #m corresponds to the physical retransmission subframe #m D2D .
  • 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.
  • 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.
  • T-RPT time domain resource pattern transmission
  • 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.
  • 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.
  • 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.
  • 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.
  • 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 .
  • 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.
  • 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.
  • 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 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.
  • 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.
  • 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.
  • EUTRAN Evolved Universal Terrestrial Radio Access Network
  • 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.
  • a predefined rule for determining the retransmission interval t according to the number N of transmissions of the TB is:
  • 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.
  • 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.
  • control indication signaling is device-to-device D2D scheduling configuration signaling, or D2D SA T-RPT signaling.
  • 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.
  • 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 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • a 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.
  • 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.
  • 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.
  • 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.
  • 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].
  • 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.
  • 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.
  • a data transmission system 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 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.
  • 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.
  • 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.
  • the invention is not limited to any specific combination of hardware and software.
  • 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.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé, un appareil, et un système de transmission de données. Le procédé comprend les étapes suivantes : un premier équipement d'utilisateur (UE) détermine la sous-trame hébergeant une ressource de canal de données d'après le numéro d'indice k d'une sous-trame de transmission initiale, ou le numéro d'indice k de la sous-trame de transmission initiale et un intervalle de retransmission t, k et t étant des entiers non négatifs; et le premier UE transmet un bloc de transmission (TB) de données dans la sous-trame hébergeant la ressource de canal de données.
PCT/CN2015/074332 2014-08-07 2015-03-16 Procédé, appareil, et système de transmission de données WO2016019724A1 (fr)

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