WO2018010606A1 - 一种数据传输方法及装置 - Google Patents

一种数据传输方法及装置 Download PDF

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Publication number
WO2018010606A1
WO2018010606A1 PCT/CN2017/092247 CN2017092247W WO2018010606A1 WO 2018010606 A1 WO2018010606 A1 WO 2018010606A1 CN 2017092247 W CN2017092247 W CN 2017092247W WO 2018010606 A1 WO2018010606 A1 WO 2018010606A1
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Prior art keywords
data
transmission
node
transmission node
cyclic prefix
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PCT/CN2017/092247
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English (en)
French (fr)
Inventor
戴博
谢峰
刘锟
袁志锋
Original Assignee
中兴通讯股份有限公司
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Priority to EP17826942.9A priority Critical patent/EP3487137A4/en
Publication of WO2018010606A1 publication Critical patent/WO2018010606A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • H04L27/2601Multicarrier modulation systems
    • H04L27/2602Signal structure
    • H04L27/2605Symbol extensions, e.g. Zero Tail, Unique Word [UW]
    • H04L27/2607Cyclic extensions
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048Allocation of pilot signals, i.e. of signals known to the receiver

Definitions

  • the present application relates to, but is not limited to, the field of wireless communications, and in particular, to a data transmission method and apparatus.
  • the uplink synchronization includes the following four steps: The first step is that the UE transmits a physical random access channel (In the second step, the base station obtains the timing adjustment amount of the UE according to the PRACH sent by the UE, and sends the timing adjustment information and the scheduling information of the UE transmitting the uplink data to the target UE. The third step is that the UE sends the scheduling information according to the base station.
  • Msg3 is transmitted to its own timing adjustment information and scheduling information of the uplink data transmission, wherein Msg3 includes information such as a connection request and a user identifier; and in step 4, the base station feeds back the Msg4 message (including the user according to the received user identification information and the request information).
  • the identifier and the request response message are fed back to the target UE, where the PRACH is a specific sequence, the PRACH resource pool is configured for the base station, and the UE randomly selects the PRACH transmission in the configured resource pool, and there are two UEs selecting the same PRACH, and the base station is Two UEs cannot be identified during the PRACH detection process, and the third step UE transmits the user identifier and the fourth step base station carries the first
  • the three-step user ID is used to let the user identify whether the user is successful. If the user does not receive the self-reported feedback from the base station, the user is considered to be unsuccessful.
  • the identifier is the user's global unique identification code (40 bits).
  • the access process is performed even if the data packet is small, resulting in data transmission delay, and also increases unnecessary overhead of the system, which affects system resource usage efficiency.
  • Embodiments of the present invention provide a data transmission method and apparatus, which can transmit data more quickly. Reduce the delay and improve the efficiency of system resources. At the same time, it can ensure the impact on other users' data transmission in the non-synchronous scenario as small as possible.
  • the first transmission node transmits data on n OFDM symbols; the data includes a number of bits greater than 1, the data is encoded and mapped onto the n OFDM symbols, and n is an integer greater than one;
  • the first OFDM symbol includes a first cyclic prefix; the OFDM symbol other than the first OFDM symbol does not include a cyclic prefix or includes a second cyclic prefix; the length of the first cyclic prefix is greater than or equal to the The length of the second cyclic prefix.
  • the length of the first cyclic prefix may be greater than a time domain asynchronous offset of the first transmission node.
  • the first OFDM symbol when the first OFDM symbol includes a first cyclic prefix, and the OFDM symbol other than the first OFDM symbol includes a second cyclic prefix, one or more of the first cyclic prefix
  • the cyclic prefix can have the following positional relationship:
  • Different cyclic prefixes are adjacent, the first cyclic prefix is located on the first OFDM symbol, and the plurality of second cyclic prefixes are consecutive and do not intersect;
  • the different cyclic prefixes are adjacent, the first cyclic prefix is located on the first OFDM symbol, and the plurality of second cyclic prefixes are crossed.
  • the n OFDM symbols may further include a guard interval (GP).
  • GP guard interval
  • the sum of the time domain lengths of one or more cyclic prefixes, n OFDM symbols, and GPs may be a millisecond length of 2 m , wherein the time domain length of the GP is greater than or equal to 0, and m is an integer.
  • a time domain location corresponding to the n OFDM symbols may be configured by a base station by signaling.
  • the value of n may be determined based on a predefined manner determination, or a manner of determining a base station configuration, or determined according to a predefined parameter, wherein the predefined parameter comprises at least one of the following: The transport block size of the data, the type of the data, the system bandwidth, the coverage level corresponding to the data, the number of repetitions corresponding to the data, and the subcarrier spacing.
  • the frequency domain bandwidth for transmitting the data may be determined based on: a predefined manner determination, or a manner of determining the configuration of the base station, or according to Pre-defined parameter determination, wherein the predefined parameter comprises at least one of: a transport block size of the data, a type of the data, a system bandwidth, an overlay level corresponding to the data, and a repetition number corresponding to the data , subcarrier spacing.
  • the first cyclic prefix when the second cyclic prefix is greater than a first threshold, the first cyclic prefix may be equal to a second cyclic prefix; when the second cyclic prefix is less than a first threshold, the first The cyclic prefix can be greater than the second cyclic prefix.
  • the data when initially accessing the network, may include at least one of: a specific identifier carried by the first transit node itself, a connection establishment request message, a service data packet; or, when accessing the network
  • the data when transmitted, may include at least one of the following: an identifier and a service data packet allocated by the second transmission node to the first transmission node, and a short security information packet allocated by the second transmission node.
  • the retransmission of the data, the transmission of the next new data, and the feedback manner of the data may be based at least on a buffer scheduling request (BSR), a data type, a data block size, and a duration of the data.
  • BSR buffer scheduling request
  • the bandwidth corresponding to the data is determined.
  • the retransmission of the data, the transmission of the next new data, and the feedback manner of the data are determined according to the BSR, the data type, the duration corresponding to the data, and the bandwidth corresponding to the data, and may include At least one of the following:
  • the corresponding transmission manner includes: a manner in which subsequent data transmission is scheduled based on the second transmission node;
  • the corresponding feedback manner includes: the second transmission node only feeds back at least one of an acknowledgment/negative (ACK/NACK) message and the random identification information, where the random identification information is the second
  • the transmitting node is randomly generated according to the identifier reported by the first transmitting node, or the first transmitting node is randomly generated and carried in the data and transmitted to the second transmitting node;
  • the corresponding transmission mode includes: a manner in which the subsequent data transmission is scheduled based on the second transmission node;
  • the corresponding feedback manner includes: The second transmission node only feeds back at least one of the ACK/NACK message and the random identification information, where the second identifier is randomly generated according to the identifier reported by the first transit node, or the first After the transmission node is randomly generated, it is carried in the data and transmitted to the second transmission node;
  • the corresponding transmission manner includes: a manner in which subsequent data transmission is scheduled based on the second transmission node;
  • the corresponding feedback manner includes: the second transmission node only feeds back at least one of the ACK/NACK message and the random identification information, where the random identification information is the second transmission.
  • the node is randomly generated according to the identifier reported by the first transmission node, or the first transmission node is randomly generated and carried in the data and transmitted to the second transmission node;
  • the corresponding transmission manner includes: a manner in which subsequent data transmission is scheduled based on the second transmission node;
  • the corresponding feedback manner includes: the second transmission node only feeds back at least one of the ACK/NACK message and the random identification information, where the random identification information is the second transmission node according to the The identifier of the first transmission node is randomly generated, or the first transmission node is randomly generated and carried in the data and transmitted to the second transmission node.
  • the above method may further include:
  • the first transmitting node determines whether to perform data retransmission according to at least one of an ACK/NACK message and random identification information.
  • the above method may further include:
  • the first transmission node When the first transmission node only obtains a NACK message, the first transmission node randomly selects resource transmission again.
  • the above method may further include:
  • the first transmitting node When the first transmitting node obtains the TA, the first transmitting node randomly selects the second resource transmission retransmission data or new data in the second resource set; wherein the second resource set is configured by the base station for a resource set of a plurality of second resources that transmit data, the second resource is a basic unit for transmitting data, and a frequency domain bandwidth and a time domain length of the second resource are determined based on a predefined; the second resource is based on The resource structure of the second transmission node scheduling the transmission data is the same.
  • the above method may further include:
  • the first transmitting node When the first transmitting node obtains the TA and the uplink grant, or only obtains the uplink grant, the first transmitting node sends the retransmitted data and the new data on the resource indicated by the uplink grant.
  • the above method may further include:
  • the first transmission node obtains the random identifier, if the random identifier is consistent with the target random identifier, it is determined that the transmission is successful; if not, the transmission is determined to be unsuccessful, and the resource is re-randomly selected for data retransmission.
  • the first transmission node may determine a transmission mode according to at least one of configuration information, a predefined rule, and first transmission node capability information in the current system, where the predefined rule includes: The first transmission node selects a transmission mode according to at least one of a transmission data size or a size of a BSR, a time domain transmission unit corresponding to the transmission data, a repeated transmission corresponding to the transmission data, and proprietary information of the system configuration.
  • the manner of transmitting data may include at least one of the following:
  • the first transmission node configures the unscheduled transmission according to the second transmission node; the first transmission node is free of scheduled retransmission or new data transmission according to the ACK/NACK message fed back by the second transmission node;
  • the first transmitting node configures the unscheduled transmission according to the second transmitting node; the first transmitting node is free of scheduled retransmission or new data transmission according to the ACK/NACK message and the TA fed back by the second transmitting node; according to the TA fed back by the second transmitting node, Transfer data after adjustment;
  • the first transmitting node configures the unscheduled transmission according to the second transmitting node; the first transmitting node performs scheduling-based retransmission or new data transmission according to the uplink scheduling grant (UL Grant) and the TA fed back by the second transmitting node;
  • UL Grant uplink scheduling grant
  • the first transmitting node configures the unscheduled transmission according to the second transmitting node; the first transmitting node retransmits the data or transmits the new data according to the UL Grant fed back by the second transmitting node.
  • a transmission unit configured to transmit data on n OFDM symbols; wherein the data includes a number of bits greater than 1, the data is encoded and mapped onto the n OFDM symbols, and n is an integer greater than one;
  • the first OFDM symbol includes a first cyclic prefix
  • the OFDM symbol other than the first OFDM symbol does not include a cyclic prefix or includes a second cyclic prefix.
  • the length of the ring prefix is greater than or equal to the length of the second cyclic prefix.
  • the length of the first cyclic prefix may be greater than a time domain asynchronous offset of the first transmission node.
  • the first OFDM symbol when the first OFDM symbol includes a first cyclic prefix, and the OFDM symbol other than the first OFDM symbol includes a second cyclic prefix, one or more of the first cyclic prefix
  • the cyclic prefix can have the following positional relationship:
  • Different cyclic prefixes are adjacent, the first cyclic prefix is located on the first OFDM symbol, and the plurality of second cyclic prefixes are consecutive and do not intersect;
  • the different cyclic prefixes are adjacent, the first cyclic prefix is located on the first OFDM symbol, and the plurality of second cyclic prefixes are crossed.
  • the n OFDM symbols may further include a GP.
  • the sum of the time domain lengths of one or more cyclic prefixes, n OFDM symbols, and GPs may be a millisecond length of 2 m , wherein the time domain length of the GP is greater than or equal to 0, and m is an integer.
  • a time domain location corresponding to the n OFDM symbols may be configured by a base station by signaling.
  • the value of n may be determined based on a predefined manner determination, or a manner of determining a base station configuration, or determined according to a predefined parameter, wherein the predefined parameter comprises at least one of the following: The transport block size of the data, the type of the data, the system bandwidth, the coverage level corresponding to the data, the number of repetitions corresponding to the data, and the subcarrier spacing.
  • the frequency domain bandwidth for transmitting the data may be determined based on a predefined manner determination, or a manner in which the base station configuration is determined, or determined according to predefined parameters.
  • the predefined parameter includes at least one of: a transport block size of the data, a type of the data, a system bandwidth, an overlay level corresponding to the data, a repetition number corresponding to the data, and a subcarrier spacing .
  • the first cyclic prefix when the second cyclic prefix is greater than a first threshold, the first cyclic prefix may be equal to a second cyclic prefix; when the second cyclic prefix is less than a first threshold, The first cyclic prefix may be greater than the second cyclic prefix.
  • the data when initially accessing the network, may include at least one of: a specific identifier carried by the first transit node itself, a connection establishment request message, a service data packet; or, when accessing the network
  • the data when transmitted, may include at least one of the following: an identifier and a service data packet allocated by the second transmission node to the first transmission node, and a short security information packet allocated by the second transmission node.
  • the retransmission of the data, the transmission of the next new data, and the feedback manner corresponding to the data may be based at least on the BSR, the data type, the data block size, the duration of the data, and the data correspondence.
  • the bandwidth is determined.
  • the retransmission of the data, the transmission of the next new data, and the feedback manner of the data are determined according to the BSR, the data type, the duration corresponding to the data, and the bandwidth corresponding to the data, and may include At least one of the following:
  • the corresponding transmission manner includes: a manner in which subsequent data transmission is scheduled based on the second transmission node;
  • the corresponding feedback manner includes: the second transmission node only feeds back at least one of the ACK/NACK message and the random identification information, where the random identification information is the second transmission node according to the The identifier of the first transmission node is randomly generated, or the first transmission node is randomly generated and carried in the data and transmitted to the second transmission node;
  • the corresponding transmission mode includes: a manner in which the subsequent data transmission is scheduled based on the second transmission node;
  • the corresponding feedback manner includes: the second transmission node only feeds back at least one of the ACK/NACK message and the random identification information, where the random identification information is the second transmission.
  • the node is randomly generated according to the identifier reported by the first transmission node, or the first transmission node is randomly generated and carried in the data and transmitted to the second transmission node;
  • the corresponding transmission manner includes: a manner in which subsequent data transmission is scheduled based on the second transmission node;
  • the corresponding feedback manner includes: the second transmission node only feeds back at least one of the ACK/NACK message and the random identification information,
  • the random identification information is randomly generated by the second transmission node according to the identifier reported by the first transmission node, or the first transmission node is randomly generated and carried in the data and transmitted to the second transmission node;
  • the corresponding transmission manner includes: a manner in which subsequent data transmission is scheduled based on the second transmission node;
  • the corresponding feedback manner includes: the second transmission node only feeds back at least one of the ACK/NACK message and the random identification information, where the random identification information is the second transmission node according to the The identifier of the first transmission node is randomly generated, or the first transmission node is randomly generated and carried in the data and transmitted to the second transmission node.
  • the foregoing apparatus may further include:
  • the processing unit is configured to determine whether to perform data retransmission according to at least one of an ACK/NACK message and random identification information.
  • the transmitting unit may be further configured to randomly select a resource transmission again when the first transmitting node only obtains a NACK message.
  • the transmitting unit may be further configured to: when the first transmitting node obtains the TA, randomly select the second resource transmission retransmission data or new data in the second resource set; wherein
  • the second resource set is a resource set configured by the base station for transmitting a plurality of second resources, where the second resource is a basic unit for transmitting data, and the frequency domain bandwidth and the time domain length of the second resource are based on a predefined And determining; the second resource is the same as the resource structure for scheduling transmission of data based on the second transmission node.
  • the transmitting unit may be further configured to: when the first transmitting node obtains the TA and the uplink grant, or obtain only the uplink grant, send the retransmitted data on the resource indicated by the uplink grant and New data.
  • the processing unit may be further configured to: when the first transmission node obtains a random identifier, if the random identifier is consistent with the target random identifier, determine that the transmission is successful; if not, determine the transmission Unsuccessful, re-randomly select resources for data retransmission.
  • the transmitting unit may be further configured to determine a transmission mode according to at least one of configuration information, a predefined rule, and first transmission node capability information in the current system; wherein the predefined rule includes : the first transmission node is based on the size of the transmission data or the BSR At least one of the size, the time domain transmission unit corresponding to the transmission data, the repeated transmission corresponding to the transmission data, and the proprietary information of the system configuration selects the transmission mode.
  • the manner of transmitting data may include at least one of the following:
  • the first transmission node configures the unscheduled transmission according to the second transmission node; the first transmission node is free of scheduled retransmission or new data transmission according to the ACK/NACK message fed back by the second transmission node;
  • the first transmitting node configures the unscheduled transmission according to the second transmitting node; the first transmitting node is free of scheduled retransmission or new data transmission according to the ACK/NACK message and the TA fed back by the second transmitting node; according to the TA fed back by the second transmitting node, Transfer data after adjustment;
  • the first transmitting node configures the unscheduled transmission according to the second transmitting node; the first transmitting node performs scheduling-based retransmission or new data transmission according to the uplink scheduling grant (UL Grant) and the TA fed back by the second transmitting node;
  • UL Grant uplink scheduling grant
  • the first transmitting node configures the unscheduled transmission according to the second transmitting node; the first transmitting node retransmits the data or transmits the new data according to the UL Grant fed back by the second transmitting node.
  • the embodiment of the present application further provides a computer readable medium storing a data transmission program, and the data transmission program is implemented by a processor to implement the foregoing data transmission method.
  • data is transmitted on n orthogonal frequency division multiplexing (OFDM) symbols; the data includes a number of bits greater than 1, and the data is encoded and mapped to the n OFDM symbols.
  • n is an integer greater than 1; wherein the first OFDM symbol includes a first cyclic prefix; the OFDM symbol other than the first OFDM symbol does not include a cyclic prefix or includes a second cyclic prefix; The length of the prefix is greater than or equal to the length of the second cyclic prefix; thus, data can be transmitted more quickly, delay is reduced, and system resource usage efficiency is improved; and at the same time, data transmission to other users in an asynchronous scenario can be guaranteed.
  • the impact is as small as possible.
  • FIG. 1 is a schematic structural diagram 1 of a data transmission channel according to an embodiment of the present invention.
  • FIG. 2 is a second schematic structural diagram of a data transmission channel according to an embodiment of the present invention.
  • FIG. 3 is a third schematic structural diagram of a data transmission channel according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram 4 of a data transmission channel according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram 5 of a data transmission channel according to an embodiment of the present invention.
  • FIG. 6 is a schematic flowchart diagram of a data transmission method according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a data transmission apparatus according to an embodiment of the present invention.
  • FIG. 6 is a schematic flowchart of a data transmission method according to an embodiment of the present invention. As shown in FIG. 6, the data transmission method includes:
  • Step 601 The first transmission node transmits data on n OFDM symbols.
  • the data includes a number of bits greater than 1.
  • the data is encoded and mapped to the n OFDM symbols, where n is an integer greater than 1.
  • the first OFDM symbol includes a first cyclic prefix; the OFDM symbol other than the first OFDM symbol does not include a cyclic prefix or includes a second cyclic prefix; the length of the first cyclic prefix is greater than or equal to the second The length of the cyclic prefix.
  • the first transit node may refer to a node device such as a terminal, a base station, and a relay.
  • the length of the first cyclic prefix may be greater than the time domain asynchronous offset of the first transit node.
  • a cyclic prefix is added before each OFDM symbol, a first cyclic prefix (CP1) of the first OFDM symbol is greater than a second cyclic prefix (CP2) of other OFDM symbols, and a cyclic prefix time domain length of other OFDM symbols is the same, first
  • the cyclic prefix is mainly used to solve the data interference sent by other users in the time domain in the unsynchronized scenario.
  • the cyclic prefix of other OFDM symbols is mainly used to solve the interference between OFDM symbols caused by multipath delay, as shown in Figure 1. Shown. Or, the cyclic prefix is added only before the first OFDM symbol, and the cyclic prefix is not added to other OFDM symbols.
  • the first cyclic prefix (CP1) is mainly used to solve the problem that other users in the time domain are sent in the unsynchronized scenario.
  • Data interference interference between OFDM symbols caused by multipath delay is solved by new waveform modulation, such as FB-OFDM, as shown in Figure 2.
  • the cyclic prefix of other symbols can also In one or more, the cyclic prefix of the other OFDM symbols is smaller than the cyclic prefix of the first OFDM symbol; as shown in FIG. 3 and FIG. 4, there are three CP types, and there are four types, five types, and the like. many.
  • the prefix when the first OFDM symbol includes the first cyclic prefix, and the OFDM symbol other than the first OFDM symbol includes the second cyclic prefix, one or more cycles except the first cyclic prefix
  • the prefix can have the following positional relationship:
  • cyclic prefixes are separated by a first cyclic prefix, as shown in FIG. 3, and CP1 and CP3 are separated by CP1;
  • the first cyclic prefix is located on the first OFDM symbol, and the plurality of second cyclic prefixes are consecutive and do not intersect. As shown in FIG. 4, CP2 and CP3 are consecutive and do not intersect;
  • the first cyclic prefix is located on the first OFDM symbol, and the plurality of second cyclic prefixes are crossed. As shown in FIG. 5, CP2 and CP3 intersect.
  • the n OFDM symbols may further include a guard interval (GP).
  • GP guard interval
  • the sum of the time domain lengths of one or more cyclic prefixes, n OFDM symbols, and GPs is a millisecond length of 2 m , wherein the time domain length of the GP is greater than or equal to 0, and m is an integer, such as: - 4,-3,-2,-1,0,1,2,3,4,8,16.
  • the n is 7 OFDM symbols
  • the length of the long CP is 5.2 microseconds (us)
  • the length of the short CP is 4.7 us
  • m is -1
  • the n is 14 OFDM symbols
  • the length of the long CP is 5.7.
  • short CP length is 4.7us, m is 0; or, n is 56 OFDM symbols
  • long CP length is 8.7us
  • short CP length is 4.7us
  • m is 2
  • n 112 OFDM symbol
  • the length of the long CP is 12.7us
  • the length of the short CP is 4.7
  • m is 3.
  • the n is 13 OFDM symbols
  • the length of the long CP is 39.25us
  • the length of the short CP is 4.7us
  • the length of m is 0.
  • the remaining length is; or, the n is 12 OFDM symbols
  • the length of the long CP is 75 us
  • the length of the short CP is 4.7 us
  • the length of m is 0, and the GP is the remaining length
  • the n is 11 OFDM symbols
  • the length is CP.
  • the length is 100us
  • the short CP length is 4.7us
  • m is 0, and GP is the remaining length
  • the n is 9 OFDM symbols
  • the length of the long CP is 100us (or 83.4us or 116.7us)
  • the length of the short CP is 16.7.
  • n 21 OFDM symbols
  • the length of the long CP is 100us
  • the length of the short CP is 4.7us
  • m is 1
  • GP is the remaining length
  • the n is 3 OFDM symbols
  • length CP is 16.7us
  • m is 0
  • GP is the remaining length.
  • the time domain location corresponding to the n OFDM symbols may be configured by the base station by using signaling, such as: by using a configuration period and an offset position.
  • the value of n may be determined according to a manner of determining a predefined manner, or determining a manner of configuring the base station, or determining according to a predefined parameter, where the predefined parameter includes at least one of the following: The transport block size of the data, the type of the data, the system bandwidth, the coverage level corresponding to the data, the number of repetitions corresponding to the data, and the subcarrier spacing.
  • the types of the data include, for example, control information, periodic service information, aperiodic service information, scheduling request information, link establishment information, and first transmission node capability information.
  • the n may be 6, 7, 12, 13, 14; for a NB-IoT (Narrow Band Internet of Things) system, the n may be 6, 7, 12, 13, 14; for a NB-IoT (Narrow Band Internet of Things) system, the n may be 6, 7, 12, 13, 14 For a new wireless system, the n may be 4, 6, 7, 8, 12, 13, 14, 16 in which a plurality of n OFDMs may be included in the time domain to constitute a time domain resource of the data transmission. .
  • the frequency domain bandwidth for transmitting the data may be determined according to the following manner: a predefined manner determining, or a manner of determining the configuration of the base station, or according to the pre-determination Defining parameter determination, wherein the predefined parameter comprises at least one of: a transport block size of the data, a type of the data, a system bandwidth, an overlay level corresponding to the data, a repetition number corresponding to the data, Subcarrier spacing.
  • the frequency domain bandwidth is Y1, and when the transmission size is X2, the frequency domain bandwidth is Y2; or, according to the system bandwidth, when the system bandwidth is less than X3,
  • the frequency domain is the full bandwidth.
  • the frequency domain is the configured bandwidth or the predefined bandwidth.
  • the frequency domain is The domain is multiple subcarriers, such as: 12 subcarriers, 24 carriers, or a single resource block, or two resource blocks;
  • the frequency domain bandwidth is 360 kilohertz (KHz), for a NB-IoT system, the frequency domain bandwidth is 180 kHz, and for a new wireless system, the frequency domain bandwidth is 720 kHz or 1440 kHz or 1800 khz;
  • the carrier spacing can be 3.75 kHz, 2.5 kHz, 15 kHz, 30 kHz, 60 kHz or 75 kHz.
  • the first cyclic prefix when the second cyclic prefix is greater than the first threshold, the first cyclic prefix may be equal to the second cyclic prefix;
  • the first cyclic prefix may be greater than the second cyclic prefix when the second cyclic prefix is less than the first threshold.
  • the second cyclic prefix when the first cyclic prefix is smaller than the second threshold, the second cyclic prefix may be greater than 2 (or 3, 4) times of the first cyclic prefix, and when the first cyclic prefix is greater than the second threshold, the second cyclic prefix may be compared
  • the first cyclic prefix is slightly larger than 1.5 (or 1.25) times.
  • the data when initially accessing the network, may include at least one of the following: a specific identifier carried by the first transit node, a connection establishment request message, and a service data packet; or
  • the data When the data is transmitted after accessing the network, the data may include at least one of the following: an identifier and a service data packet allocated by the second transmission node to the first transmission node, and a short security information packet allocated by the second transmission node.
  • the retransmission of the data, the transmission of the next new data, and the feedback manner of the data may be based at least on a Buffer Scheduling Request (BSR), a data type, a data block size, and the data.
  • BSR Buffer Scheduling Request
  • the corresponding duration and the bandwidth corresponding to the data are determined.
  • the retransmission of the data, the transmission of the next new data, and the feedback manner of the data are determined according to the BSR, the data type, the duration of the data, and the bandwidth corresponding to the data, and may include at least one of the following:
  • the corresponding transmission manner includes: a manner in which subsequent data transmission is scheduled based on the second transmission node;
  • the corresponding feedback manner includes: the second transmission node only feeds back at least one of an acknowledgment/negative (ACK/NACK) message and the random identification information, where the random identification information is the second
  • the transmitting node is randomly generated according to the identifier reported by the first transmitting node, or the first transmitting node is randomly generated and carried in the data and transmitted to the second transmitting node;
  • the corresponding transmission mode includes: a manner in which the subsequent data transmission is scheduled based on the second transmission node;
  • the corresponding feedback manner includes: the second transmission node only feedbacks at least the acknowledgement/negative (ACK/NACK) message and the random identification information.
  • the random identification information is randomly generated by the second transmission node according to the identifier reported by the first transmission node, or the first transmission node is randomly generated and carried in the data and transmitted to the second transmission node. ;
  • the corresponding transmission manner includes: a manner in which subsequent data transmission is scheduled based on the second transmission node;
  • the corresponding feedback manner includes: the second transmission node only feeds back at least one of an acknowledgment/negative (ACK/NACK) message and the random identification information, the random identifier
  • the information is generated by the second transmission node randomly according to the identifier reported by the first transmission node, or the first transmission node is randomly generated and carried in the data and transmitted to the second transmission node;
  • the corresponding transmission manner includes: a manner in which subsequent data transmission is scheduled based on the second transmission node;
  • the corresponding feedback manner includes: the second transmission node only feeds back at least one of an acknowledgment/negative (ACK/NACK) message and the random identification information, where the random identification information is the second
  • the transmitting node is randomly generated according to the identifier reported by the first transmitting node, or the first transmitting node is randomly generated and carried in the data and transmitted to the second transmitting node.
  • the foregoing method may further include:
  • Step 602 The first transmitting node determines whether to perform data retransmission according to at least one of an ACK/NACK message and random identification information.
  • the foregoing method may further include:
  • the first transmission node When the first transmission node only obtains a NACK message, the first transmission node randomly selects resource transmission again.
  • the foregoing method may further include:
  • the first transmission node When the first transmission node obtains a timing advance (TA), the first transmission node randomly selects a second resource transmission retransmission data or new data in the second resource set; wherein the second resource set is a resource set of a plurality of second resources for transmitting data configured by the base station, where the second resource is a basic unit for transmitting data, and a frequency domain bandwidth and a time domain length of the second resource are determined according to a predefined definition, for example: 2 physical resource blocks in the LTE system, or 2 objects in 4 consecutive subframes a resource block, or two resource units (RUs, Resource Units) in the NB-IoT system, or 4 RUs, or 8 RUs; the second resource and resources for scheduling data transmission based on the second transmission node
  • the structure is the same, such as: subcarrier spacing, CP (Cyclic Prefix) length and position.
  • timing adjustment is required.
  • the foregoing method may further include:
  • the first transit node When the first transit node obtains the TA and the uplink grant, or only obtains the uplink grant, the first transit node sends the retransmitted data and the new data on the resource indicated by the uplink grant.
  • the foregoing method may further include:
  • the first transmission node obtains the random identifier, if the random identifier is consistent with the target random identifier (the random identifier generated according to the report ID, or the report identifier included in the data), it is determined that the transmission is successful; if not, then It is determined that the transmission is unsuccessful, and the resource is re-randomly selected for data retransmission
  • the first transmitting node may determine the transmission mode according to at least one of configuration information, a predefined rule, and first transmission node capability information in the current system.
  • the predefined rule includes: the first transmission node according to the size of the transmission data or the size of the BSR, the time domain transmission unit corresponding to the transmission data, the repeated transmission corresponding to the transmission data, and at least the proprietary information of the system configuration. A choice of transmission method.
  • the manner of transmitting data may include at least one of the following manners:
  • the first transmission node configures the unscheduled transmission according to the second transmission node; the first transmission node is free of scheduled retransmission or new data transmission according to the ACK/NACK message fed back by the second transmission node;
  • the first transmitting node configures the unscheduled transmission according to the second transmitting node; the first transmitting node is free of scheduled retransmission or new data transmission according to the ACK/NACK message and the TA fed back by the second transmitting node; according to the TA fed back by the second transmitting node, Transfer data after adjustment;
  • the first transmitting node configures the unscheduled transmission according to the second transmitting node; the first transmitting node performs scheduling-based retransmission or new data transmission according to the uplink scheduling grant (UL Grant) and the TA fed back by the second transmitting node;
  • UL Grant uplink scheduling grant
  • the first transmission node configures the unscheduled transmission according to the second transmission node; the first transmission node is configured according to the The UL Grant fed back by the two transmitting nodes retransmits the data or transmits the new data.
  • Step 1a base station unscheduled transmission configuration
  • Step 1b The terminal performs scheduling-free transmission according to the base station configuration
  • Step 1c The base station feeds back ACK/NACK
  • Step 1d The terminal is free of scheduled retransmission or new data transmission according to feedback from the base station.
  • Step 2a the base station is free of scheduled transmission configuration
  • Step 2b The terminal performs scheduling-free transmission according to the base station configuration
  • Step 2c the base station feeds back ACK/NACK and TA; (the first transmission feedback TA, the subsequent transmission does not feedback TA);
  • Step 2d The terminal performs retransmission-free retransmission or new data transmission according to base station feedback (ACK/NACK and TA); and adjusts and transmits data according to the received TA.
  • base station feedback ACK/NACK and TA
  • Step 3a The base station is free of scheduled transmission configuration
  • Step 3b The terminal performs scheduling-free transmission according to the base station configuration
  • Step 3c The base station feeds back the UL Grant and the TA, or the UL Grant; (the first feedback TA, the subsequent transmission does not feed back the TA);
  • Step 3d The terminal is based on the base station feedback (UL Grant and TA), based on scheduled retransmission or new data transmission.
  • Step 4a The base station is free of scheduled transmission configuration
  • Step 4b The terminal performs scheduling-free transmission according to the base station configuration
  • Step 4c The base station feeds back the UL Grant
  • Step 4d The terminal retransmits the data or transmits the new according to the detected information (base station feedback information). data.
  • mode 1 and mode 3 are combined with forming mode 5
  • mode 1 and mode 4 are combined to form mode 6.
  • Step 5a base station unscheduled transmission configuration
  • Step 5b The terminal performs scheduling-free transmission according to the base station configuration
  • Step 5c the base station feeds back according to step 1c or 3c;
  • Step 5d The terminal retransmits the data or the new data transmission according to the feedback of the base station by using the corresponding step 1c or 3c.
  • Step 6a the base station is free of scheduled transmission configuration
  • Step 6b The terminal performs scheduling-free transmission according to the base station configuration
  • Step 6c the base station feeds back according to step 1c or 4c;
  • Step 6d The terminal retransmits the data or the new data transmission by using the step 1c or 4c according to the feedback of the base station.
  • the combination of the non-scheduled and scheduling modes can reduce the performance degradation caused by data collisions caused by non-scheduling.
  • the scheduling method can be used to supplement the improvement of the reliability and the transmission efficiency of the data transmission, and select different scenarios for different scenarios.
  • the scheduling mode can better realize data transmission, reduce transmission delay, and improve transmission efficiency.
  • FIG. 7 is a schematic structural diagram of a data transmission apparatus according to an embodiment of the present invention. As shown in FIG. 7, the data transmission apparatus includes:
  • the transmitting unit 71 is configured to transmit data on n OFDM symbols; wherein the data includes a number of bits greater than 1, the data is encoded and mapped onto the n OFDM symbols, and n is an integer greater than one;
  • the first OFDM symbol includes a first cyclic prefix
  • the OFDM symbol other than the first OFDM symbol does not include a cyclic prefix or includes a second cyclic prefix.
  • the length of the ring prefix is greater than or equal to the length of the second cyclic prefix.
  • the length of the first cyclic prefix may be greater than the time domain asynchronous offset of the first transit node.
  • the data transmission device is disposed at the first transmission node.
  • the first OFDM symbol when the first OFDM symbol includes the first cyclic prefix, and the other OFDM symbols except the first OFDM symbol include the second cyclic prefix, one or more of the first cyclic prefix
  • the cyclic prefix can have the following positional relationship:
  • Different cyclic prefixes are adjacent, the first cyclic prefix is located on the first OFDM symbol, and the plurality of second cyclic prefixes are consecutive and do not intersect;
  • the different cyclic prefixes are adjacent, the first cyclic prefix is located on the first OFDM symbol, and the plurality of second cyclic prefixes are crossed.
  • the n OFDM symbols may further include a GP.
  • the sum of the time domain lengths of one or more cyclic prefixes, n OFDM symbols, and GPs may be a millisecond length of 2 m , wherein the time domain length of the GP is greater than or equal to 0, and m is an integer.
  • the time domain location corresponding to the n OFDM symbols may be configured by the base station by using signaling.
  • the value of n may be determined according to a manner of determining a predefined manner, or determining a manner of configuring the base station, or determining according to a predefined parameter, where the predefined parameter includes at least one of the following: The transport block size of the data, the type of the data, the system bandwidth, the coverage level corresponding to the data, the number of repetitions corresponding to the data, and the subcarrier spacing.
  • the frequency domain bandwidth for transmitting the data may be determined according to the following manner: a predefined manner determining, or a manner of determining the configuration of the base station, or determining according to a predefined parameter,
  • the predefined parameter includes at least one of the following: a transport block size of the data, a type of the data, a system bandwidth, an overlay level corresponding to the data, a repetition number corresponding to the data, and a subcarrier spacing.
  • the first cyclic prefix when the second cyclic prefix is greater than the first threshold, the first cyclic prefix may be equal to the second cyclic prefix;
  • the first cyclic prefix may be greater than the second cyclic prefix when the second cyclic prefix is less than the first threshold.
  • the data when initially accessing the network, may include at least one of the following: a specific identifier carried by the first transit node, a connection establishment request message, and a service data packet; or
  • the data When the data is transmitted after accessing the network, the data may include at least one of the following: an identifier and a service data packet allocated by the second transmission node to the first transmission node, and a short security information packet allocated by the second transmission node.
  • the retransmission of the data, the transmission of the next new data, and the feedback manner corresponding to the data may be based at least on a buffer scheduling request (BSR), a data type, a data block size, and a duration corresponding to the data.
  • BSR buffer scheduling request
  • the bandwidth corresponding to the data is determined.
  • the retransmission of the data, the transmission of the next new data, and the feedback manner of the data are determined according to the BSR, the data type, the duration of the data, and the bandwidth corresponding to the data, and may include the following At least one:
  • the corresponding transmission manner includes: a manner in which subsequent data transmission is scheduled based on the second transmission node;
  • the corresponding feedback manner includes: the second transmission node only feeds back at least one of an acknowledgment/negative (ACK/NACK) message and the random identification information, where the random identification information is the second
  • the transmitting node is randomly generated according to the identifier reported by the first transmitting node, or the first transmitting node is randomly generated and carried in the data and transmitted to the second transmitting node;
  • the corresponding transmission mode includes: a manner in which the subsequent data transmission is scheduled based on the second transmission node;
  • the corresponding feedback manner includes: the second transmission node only feeds back at least one of an acknowledgment/negative (ACK/NACK) message and the random identification information, the random identifier
  • the information is generated by the second transmission node randomly according to the identifier reported by the first transmission node, or the first transmission node is randomly generated and carried in the data and transmitted to the second transmission node;
  • the corresponding transmission manner includes: a manner in which subsequent data transmission is scheduled based on the second transmission node;
  • the corresponding feedback manner includes: the second transmission node only feeds back at least one of an acknowledgment/negative (ACK/NACK) message and the random identification information, the random identifier
  • the information is generated by the second transmission node randomly according to the identifier reported by the first transmission node, or the first transmission node is randomly generated and carried in the data and transmitted to the second transmission node;
  • the corresponding transmission manner includes: a manner in which subsequent data transmission is scheduled based on the second transmission node;
  • the corresponding feedback manner includes: the second transmission node only feeds back at least one of an acknowledgment/negative (ACK/NACK) message and the random identification information, where the random identification information is the second
  • the transmitting node is randomly generated according to the identifier reported by the first transmitting node, or the first transmitting node is randomly generated and carried in the data and transmitted to the second transmitting node.
  • the foregoing apparatus may further include:
  • the processing unit 72 is configured to determine whether to perform data retransmission according to at least one of the ACK/NACK message and the random identification information.
  • the transmitting unit 71 may be further configured to: when the first transit node obtains only the NACK message, randomly select the resource transmission again.
  • the transmitting unit 71 may be further configured to: when the first transmission node obtains a timing advance (TA), randomly select the second resource transmission retransmission data or new data in the second resource set.
  • the second resource set is a resource set configured by the base station for transmitting a plurality of second resources, where the second resource is a basic unit for transmitting data, and a frequency domain bandwidth of the second resource is The domain length is determined based on a predefined; the second resource is the same as the resource structure based on the second transmission node scheduling the transmission data.
  • TA timing advance
  • the transmitting unit 71 may be further configured to: when the first transit node obtains the TA and the uplink grant, or obtain only the uplink grant, send the retransmitted data on the resource indicated by the uplink grant. New data.
  • the processing unit 72 may be further configured to: when the first transmission node obtains the random identifier, if the random identifier is consistent with the target random identifier, determine that the transmission is successful; if not, determine the transmission. Unsuccessful, re-randomly select resources for data retransmission.
  • the manner of transmitting data may include at least one of the following manners:
  • the first transmission node configures the unscheduled transmission according to the second transmission node; the first transmission node is free of scheduled retransmission or new data transmission according to the ACK/NACK message fed back by the second transmission node;
  • the first transmitting node configures the unscheduled transmission according to the second transmitting node; the first transmitting node is free of scheduled retransmission or new data transmission according to the ACK/NACK message and the TA fed back by the second transmitting node; according to the TA fed back by the second transmitting node, Transfer data after adjustment;
  • the first transmitting node configures the unscheduled transmission according to the second transmitting node; the first transmitting node performs scheduling-based retransmission or new data transmission according to the uplink scheduling grant (UL Grant) and the TA fed back by the second transmitting node;
  • UL Grant uplink scheduling grant
  • the first transmitting node configures the unscheduled transmission according to the second transmitting node; the first transmitting node retransmits the data or transmits the new data according to the UL Grant fed back by the second transmitting node.
  • the second transmission node may include a node device such as a terminal, a base station, and a relay.
  • the transmission includes sending and receiving, for example, the terminal sends data to the base station, and the base station receives the data sent by the terminal.
  • the device may be located at the terminal or at the base station, or the base station sends data to the terminal, and the terminal receives the data sent by the base station.
  • the device may be located at the terminal or at the base station, or the first terminal may send data to the second terminal, and the second terminal may receive data sent by the first terminal, where the device may be located at the first terminal or may be located at the second terminal.
  • the terminal, or the terminal sends data to the relay, and relays the data sent by the terminal.
  • the device may be located at the terminal or may be located in the relay, or the relay may send data to the base station, and the base station receives the data sent by the relay.
  • the device may be located at the base station or may be located in the relay, or the relay may send data to the terminal, and the terminal may receive the data transmitted by the relay.
  • the device may be located at the terminal or may be located in the relay, or the base station may send the data to the relay.
  • the relay receives data transmitted by the base station, and the device may be located at the base station or may be located at the relay.
  • the first cyclic prefix length may also be greater than 1.5, 2, 5, 10, 50, 100, 500 times the length of the second cyclic prefix.
  • the relationship between the first cyclic prefix and the second cyclic prefix is different for different cell radii.
  • the first cyclic prefix length and the second cyclic prefix length can be adaptively expanded on the basis of the above limitation.
  • the first type of the data may include an access request, or a data transmission request, or a link establishment request;
  • the second type of data may include a non-access request, or a non-data transfer request, or a non-link setup request.
  • the thresholds of S1, S2, A1, A2, B1, B2, etc. are predefined values, or the second transmission node configuration value, or the first transmission node broadcast value.
  • the first transmitting node may determine, according to at least one of configuration information and a predefined rule in the current system and the first transit node capability information, a transmission mode;
  • the predefined rule may include: the first transmission node according to the size of the transmission data or the size of the BSR, the time domain transmission unit corresponding to the transmission data, the repeated transmission corresponding to the transmission data, and the proprietary information of the system configuration. A choice of transmission method.
  • the first transmission node Only the scheduling-based transmission mode is configured in the system, the first transmission node sends a scheduling request, waits for scheduling, and then transmits data, or the first transmission node sends a random access channel, after obtaining the TA, according to the scheduling and the TA transfer data.
  • the non-scheduled transmission resource and the scheduling-based random access channel resource are configured in the system, and the first transmission node selects transmission according to the transmission data size or the size of the BSR and the first transmission node capability information, such as:
  • the data size or the size of the BSR is smaller than the threshold k1, and is transmitted in a non-scheduling manner, and the first transmission node transmits data according to the foregoing manner;
  • the size of the BSR is larger than the threshold k2, and other transmission modes are adopted.
  • the first transmission node sends a scheduling request, and waits for scheduling to transmit data, or the first transmission node sends a random access channel to obtain a TA. Transfer data according to scheduling and TA;
  • the other transmission mode is adopted, for example, the first transmission node sends a scheduling request, waits for scheduling, and then transmits data, or the first transmission node sends a random connection. After entering the channel, after obtaining the TA, the data is transmitted according to the scheduling and the TA.
  • a non-scheduled transmission resource and a scheduling-based random access channel resource are configured in the system, where the first transmission node selects transmission according to a time domain transmission unit corresponding to the transmission data;
  • the time domain transmission unit may include a time domain length corresponding to a transport block, for example, the duration of the regular data is 1 ms, the length of the special data transmission is 0.5 ms, or the time domain transmission unit corresponds to the time domain OFDM symbol.
  • the size for example, the size of the time domain OFDM symbol corresponding to the regular data is 66.7 us, and the size of the time domain OFDM symbol corresponding to the special data is 33.375 us;
  • the time domain transmission unit corresponding to the data is smaller than the threshold t1 (for example, the service is sensitive to the delay, or the time domain transmission unit is compared to the regular time domain transmission.
  • the unit is small, and is transmitted in a non-scheduled manner, and the first transmitting node transmits data according to the foregoing manner;
  • the time domain transmission unit corresponding to the data is larger than the threshold t2 (eg, for delay-insensitive services, or
  • the domain transmission unit is a regular time domain transmission unit, and adopts another transmission manner, such as: the first transmission node sends a scheduling request, waits for scheduling, and then transmits data, or the first transmission node sends a random access channel to obtain After TA, data is transmitted according to scheduling and TA;
  • the other transmission mode is adopted, for example, the first transmission node sends a scheduling request, waits for scheduling, and then transmits data, or the first transmission node sends a random connection. After entering the channel, after obtaining the TA, the data is transmitted according to the scheduling and the TA.
  • the system configures a non-scheduled transmission resource and a scheduling-based random access channel resource, and the first transmission node selects a transmission according to the repeated transmission times corresponding to the transmission data;
  • the number of repeated transmissions mainly refers to the manner in which the coverage is enhanced by repeated transmission in the coverage enhancement scenario, and the different coverage levels may correspond to different repetition times, and the repeated transmission in the non-coverage enhanced scenario is not excluded;
  • the first transmission node When the first transmission node supports the non-scheduled transmission mode, the number of repeated transmissions corresponding to the data is smaller than the threshold x1, and is transmitted in a non-scheduled manner, and the first transmission node transmits according to the foregoing manner.
  • the data is transmitted; the number of repeated transmissions corresponding to the data is greater than the threshold x2, and other transmission modes are used, such as: the first transmission node sends a scheduling request, waits for scheduling, and then transmits data, or the first transmission node sends a random After accessing the channel, after obtaining the TA, the data is transmitted according to the scheduling and the TA;
  • the other transmission mode is adopted, for example, the first transmission node sends a scheduling request, waits for scheduling, and then transmits data, or the first transmission node sends a random connection. After entering the channel, after obtaining the TA, the data is transmitted according to the scheduling and the TA.
  • a non-scheduled transmission resource and a scheduling-based random access channel resource are configured in the system, and the first transmission node selects transmission according to the proprietary information configured by the system;
  • the proprietary information of the system configuration mainly refers to that the system configures the proprietary information of the first transit node after the first transit node accesses the network, and the proprietary information includes indicating whether the transit node adopts a non-scheduling manner (this Applying the proposed transmission mode), the system includes the second transmission node, or a third transmission node, where the third transmission node includes a node of the same type as the first transmission node or the second transmission node, or a higher-level transport node, such as an MME (Mobility Management Entity), a specific server, or a network element;
  • MME Mobility Management Entity
  • the first transmission node After the first transmission node supports the unscheduled transmission mode, after the first transmission node acquires the proprietary configuration information, the first transmission node transmits data in the system according to the foregoing manner; If the first transmission node fails to connect, or switches to another system (such as: cell handover, or system handover), another transmission mode is adopted, for example, the first transmission node sends a scheduling request, and waits for scheduling to transmit data. Or, the first transmitting node sends a random access channel, and after obtaining the TA, transmitting data according to the scheduling and the TA;
  • the other transmission mode is adopted, for example, the first transmission node sends a scheduling request, waits for scheduling, and then transmits data, or the first transmission node sends a random connection. After entering the channel, after obtaining the TA, the data is transmitted according to the scheduling and the TA.
  • the predetermined rules in the foregoing scenarios 3, 4, 5, and 6 may also be selected to be used at the same time. For example, when multiple conditions are satisfied at the same time, the non-scheduled transmission mode is adopted, and the data is transmitted according to the transmission mode described in this application. Otherwise, other transmissions are adopted.
  • the method is as follows: the first transmitting node sends a scheduling request, waits for scheduling, and then transmits data, or the first transmitting node sends a random access channel, and after obtaining the TA, transmits data according to the scheduling and the TA.
  • the resource pool is a periodically configured resource.
  • One or more frequency domain resources may be used for user resource selection on a basic time domain unit.
  • the time domain may have multiple cycles, such as: 5ms, 10ms, 20ms, 40ms. 80ms, 160ms, there may be one or more positions in the time domain in one cycle, such as: 3 time domain locations within 20ms, 3 time domain locations within 40ms, etc.; one time domain unit may have one or Multiple, such as: 1, 2, 4; time domain units can be 1ms, 2ms, 4ms, 8ms; frequency domain bandwidth can be 2, 3, 4, 6, 8 PRB (Physical Resource Block, physical resource block).
  • the UE access network adopts the relevant LTE process. After the connection state is configured by the base station, the UE simultaneously detects downlink control information (DL Grant, UL Grant), and can also randomly select resources for uplink data transmission in the resource pool configured by the base station.
  • DL Grant downlink control information
  • UL Grant downlink control information
  • the subframe structure of the uplink data transmission is the same as the LTE subframe structure.
  • the data transmission type includes at least one of the following:
  • the data includes an identifier ID, a BSR, a security information packet, and a connection request that are allocated by the base station to the UE;
  • the data includes an identifier ID and a service data packet allocated by the base station to the UE, and a short security information packet allocated by the base station;
  • the data includes an identifier ID and a service data packet allocated by the base station to the UE;
  • the data includes an identity ID, a BSR, and a connection request that the base station allocates to the UE.
  • the foregoing various types of data may further include a UE random ID, where the number of random ID bits is smaller than an ID allocated by the base station, such as: 2 bits, 3 bits, 4 bits;
  • the UE timing adjustment information may be transmitted to the UE through the physical downlink control channel or the physical downlink shared channel together with the UL Grant, or the timing adjustment information of multiple UEs may be transmitted together, or the timing adjustment information of multiple UEs may be The UL Grant is transmitted together;
  • the conflict resolution ID may also be carried, and the conflict resolution ID may be randomly generated according to the UE ID, or the random ID in the data may be directly used.
  • the conflict resolution ID takes a value of 0, 1, 2, and the ACK/NACK joint feedback, 2 bit indication;
  • the conflict resolution ID takes a value of 0,1, and is combined with the ACK/NACK feedback, and the 2 bit indication is performed;
  • the conflict resolution ID takes values of 0, 1, 2, 3, 4, 5, 6, and the ACK/NACK joint feedback, and the 3-bit indication;
  • the conflict resolution ID takes values of 0, 1, 2, 3, 4, 5, and the ACK/NACK joint feedback, and the 3-bit indication;
  • the UE determines, according to the feedback information, whether to retransmit, and whether a conflict occurs; for example, the detected feedback information is an ACK, but the conflict resolution ID is different from the corresponding ID, indicating that the conflict occurs, and the transmission is not correctly transmitted, and the retransmission is required. ;
  • the UE may perform resource pool selection according to whether a timing adjustment is received
  • the base station can detect multiple resource pools by means of blind detection.
  • the UE accesses the network and the data transmission randomly selects resources in the resource pool configured by the base station for uplink data transmission. After the first data transmission, data retransmission and new data transmission may also be performed according to the base station scheduling;
  • the OFDM symbol included in the transmission data subframe is less than the OFDM symbol in the LTE transmission PUSCH subframe, and the cyclic prefix of the first OFDM symbol of the transmission data subframe is larger than the first OFDM symbol in the LTE transmission PUSCH subframe Cycling prefix, or the cyclic prefix of the first OFDM symbol of the transmission data subframe is greater than or equal to the cyclic prefix of the LTE transmission PRACH;
  • the data transmission type includes at least one of the following:
  • the data includes an identifier ID, a BSR, a security information packet, and a connection request generated by the UE itself;
  • the data includes an identifier ID and a service data packet generated by the UE itself, and a short security information packet allocated by the base station;
  • the data includes an identifier ID and a service data packet generated by the UE itself;
  • the data includes an identifier ID, a BSR, and a connection request generated by the UE itself.
  • the base station blindly detects the data, and determines, according to the ID carried in the data, the data corresponding to the data.
  • the UE according to the remaining traffic volume of the UE, sends a UL Grant and the TA after the base station decodes correctly, instructs the UE to transmit new data at the scheduled location, and adjusts the timing, implicitly informs the UE that the base station has successfully decoded, and may also allocate the user.
  • a temporary identifier which is used for scheduling transmission of subsequent data; or, the UL Grant is only used to indicate that the UE is successfully transmitted; or, the ACK/NACK is fed back on the downlink feedback channel corresponding to the data, and the ACK/NACK is acquired on the downlink feedback channel of the UE. To determine if a retransmission is required.
  • the UE timing adjustment information may be transmitted to the UE through the physical downlink control channel or the physical downlink shared channel together with the UL Grant, or the timing adjustment information of multiple UEs may be transmitted together, or the timing adjustment information of multiple UEs may be The UL Grant is transmitted together.
  • the conflict resolution ID may also be carried, and the conflict resolution ID may be randomly generated according to the UE ID, or the random ID in the data packet may be directly used.
  • the conflict resolution ID takes a value of 0, 1, 2, and the ACK/NACK joint feedback, 2 bit indication;
  • the conflict resolution ID takes a value of 0,1, and is combined with the ACK/NACK feedback, and the 2 bit indication is performed;
  • the conflict resolution ID takes values of 0, 1, 2, 3, 4, 5, 6, and the ACK/NACK joint feedback, and the 3-bit indication;
  • the conflict resolution ID takes values of 0, 1, 2, 3, 4, 5, and the ACK/NACK joint feedback, and the 3-bit indication;
  • the UE may perform resource pool selection according to whether a timing adjustment is received
  • the base station can adopt blind detection.
  • the resource pool is a periodically configured resource, and one or more frequency domain resources may be used for user resource selection on a basic time domain unit, and the time domain may have multiple cycles, such as: 2ms, 4ms, 8ms, 16ms. 32ms, 64ms, 128ms, 256ms, 512ms, 1024ms, 4048ms, there may be one or more locations in the time domain in one cycle, such as: 4 time domain locations within 32ms, 2 time domain locations within 128ms, etc.;
  • the domain unit may have one or more frequency domains, such as: 1, 2, and 4; the time domain unit may be 1 ms, 2 ms, 4 ms, 8 ms, 16 ms, 32 ms, 64 ms; the frequency domain bandwidth may be 1 , 3, 6, 12 tones.
  • the UE access network adopts the relevant LTE process. After the connection state is configured by the base station, the UE simultaneously detects downlink control information (DL Grant, UL Grant), and can also randomly select resources for uplink data transmission in the resource pool configured by the base station.
  • DL Grant downlink control information
  • UL Grant downlink control information
  • the subframe structure of the uplink data transmission is the same as the LTE subframe structure.
  • the data transmission type includes at least one of the following:
  • the data includes an identifier ID, a BSR, a security information packet, and a connection request that are allocated by the base station to the UE;
  • the data includes an identifier ID and a service data packet allocated by the base station to the UE, and a short security information packet allocated by the base station;
  • the data includes an identifier ID and a service data packet allocated by the base station to the UE;
  • the data includes an identity ID, a BSR, and a connection request that the base station allocates to the UE.
  • the foregoing various types of data may further include a UE random ID, where the number of random ID bits is smaller than an ID allocated by the base station, such as: 2 bits, 3 bits, 4 bits;
  • the UE timing adjustment information may be transmitted to the UE through the physical downlink control channel or the physical downlink shared channel together with the UL Grant, or the timing adjustment information of multiple UEs may be transmitted together, or the timing adjustment information of multiple UEs may be The UL Grant is transmitted together;
  • the conflict resolution ID may also be carried, and the conflict resolution ID may be randomly generated according to the UE ID, or the random ID in the data may be directly used.
  • the conflict resolution ID takes a value of 0, 1, 2, and the ACK/NACK joint feedback, 2 bit indication;
  • the conflict resolution ID takes a value of 0,1, and is combined with the ACK/NACK feedback, and the 2 bit indication is performed;
  • the conflict resolution ID takes values of 0, 1, 2, 3, 4, 5, 6, and the ACK/NACK joint feedback, and the 3-bit indication;
  • the conflict resolution ID takes values of 0, 1, 2, 3, 4, 5, and the ACK/NACK joint feedback, and the 3-bit indication;
  • the UE determines, according to the feedback information, whether to retransmit, and whether a conflict occurs; for example, the detected feedback information is an ACK, but the conflict resolution ID is different from the corresponding ID, indicating that the conflict occurs, and the transmission is not correctly transmitted, and the retransmission is required. ;
  • the UE may perform resource pool selection according to whether a timing adjustment is received
  • the base station can detect multiple resource pools by means of blind detection.
  • the UE accesses the network and the data transmission randomly selects resources in the resource pool configured by the base station for uplink data transmission. After the first data transmission, data retransmission and new data transmission may also be performed according to the base station scheduling;
  • the OFDM symbol included in the transmission data subframe is less than the OFDM symbol in the LTE transmission PUSCH subframe, and the cyclic prefix of the first OFDM symbol of the transmission data subframe is larger than the first OFDM symbol in the LTE transmission PUSCH subframe Cycling prefix, or the cyclic prefix of the first OFDM symbol of the transmission data subframe is greater than or equal to the cyclic prefix of the LTE transmission PRACH;
  • the data transmission type includes at least one of the following:
  • the data includes an identifier ID, a BSR, a security information packet, and a connection request generated by the UE itself;
  • the data includes an identifier ID and a service data packet generated by the UE itself, and the short security assigned by the base station Information package
  • the data includes an identifier ID and a service data packet generated by the UE itself;
  • the data includes an identifier ID, a BSR, and a connection request generated by the UE itself.
  • the base station blindly detects the data, and determines, according to the ID carried in the data, the UE corresponding to the data, according to the remaining traffic volume of the UE, after the base station decodes correctly, the UL Grant and the TA are sent to instruct the UE to transmit the new position in the scheduled location.
  • the data, and the timing adjustment amount implicitly inform the UE that the base station has successfully decoded, and may also allocate a user temporary identifier for scheduling transmission of subsequent data; or, by the UL Grant, only indicate that the UE transmits successfully; or, in the data corresponding to
  • the ACK/NACK is fed back on the downlink feedback channel, and the ACK/NACK is obtained on the downlink feedback channel of the UE to determine whether retransmission is needed.
  • the UE timing adjustment information may be transmitted to the UE through the physical downlink control channel or the physical downlink shared channel together with the UL Grant, or the timing adjustment information of multiple UEs may be transmitted together, or the timing adjustment information of multiple UEs may be The UL Grant is transmitted together;
  • the conflict resolution ID may also be carried, and the conflict resolution ID may be randomly generated according to the UE ID, or the random ID in the data may be directly used.
  • the conflict resolution ID takes a value of 0, 1, 2, and the ACK/NACK joint feedback, 2 bit indication;
  • the conflict resolution ID takes a value of 0,1, and is combined with the ACK/NACK feedback, and the 2 bit indication is performed;
  • the conflict resolution ID takes values of 0, 1, 2, 3, 4, 5, 6, and the ACK/NACK joint feedback, and the 3-bit indication;
  • the conflict resolution ID takes values of 0, 1, 2, 3, 4, 5, and the ACK/NACK joint feedback, and the 3-bit indication;
  • the UE may perform resource pool selection according to whether a timing adjustment is received
  • the base station can adopt blind detection.
  • the resource pool is a periodically configured resource, and one or more frequency domain resources may be used for user resource selection on a basic time domain unit, and the time domain may have multiple cycles, such as: 2ms, 4ms, 8ms, 16ms. , 32ms, 64ms, 128ms, 256ms, 512ms, 1024ms, 4048ms, or, 1ms, 2ms, 5ms, 10ms, 20ms, 40ms, 80ms, 160ms, 320ms, 640ms, or, 0.1ms, 0.125ms, 0.25ms, 0.5ms 1ms, there may be one or more locations in the time domain in one cycle, such as: 2 time domain locations within 5ms, 3 time domain locations within 20ms, etc.; one time domain unit may have one or more frequency domains Such as: 1, 2, 4; time domain units can be 1ms, 2ms, 4ms, 8ms, 16ms, 32ms, 64ms
  • the subcarrier spacing can be 1.25 kHz, 2.5 kHz, 3.75 kHz, 7.5 kHz, 15 kHz, 30 kHz, 60 kHz, 75 kHz, 90 kHz, 120 kHz, 150 kHz.
  • the UE performs uplink synchronization with the base station, and after the access network is configured by the base station, the UE can detect the downlink control information, and can also randomly select resources in the resource pool configured by the base station to perform uplink data transmission.
  • the subframe structure of the uplink data transmission adopts a subframe structure of the uplink synchronization scenario of the 5G system.
  • the data transmission type includes at least one of the following:
  • the data includes an identifier ID, a BSR, a security information packet, and a connection request that are allocated by the base station to the UE;
  • the data includes an identifier ID and a service data packet allocated by the base station to the UE, and a short security information packet allocated by the base station;
  • the data includes an identifier ID and a service data packet allocated by the base station to the UE;
  • the data includes an identity ID, a BSR, and a connection request that the base station allocates to the UE.
  • the foregoing various types of data may further include a UE random ID, where the number of random ID bits is smaller than an ID allocated by the base station, such as: 2 bits, 3 bits, 4 bits;
  • the UE timing adjustment information may be transmitted to the UE through the physical downlink control channel or the physical downlink shared channel together with the UL Grant, or the timing adjustment information of multiple UEs may be transmitted together, or the timing adjustment information of multiple UEs may be The UL Grant is transmitted together;
  • the conflict resolution ID may also be carried, and the conflict resolution ID may be randomly generated according to the UE ID, or the random ID in the data may be directly used.
  • the conflict resolution ID takes a value of 0, 1, 2, and the ACK/NACK joint feedback, 2 bit indication;
  • the conflict resolution ID takes a value of 0,1, and is combined with the ACK/NACK feedback, and the 2 bit indication is performed;
  • the conflict resolution ID takes values of 0, 1, 2, 3, 4, 5, 6, and the ACK/NACK joint feedback, and the 3-bit indication;
  • the conflict resolution ID takes values of 0, 1, 2, 3, 4, 5, and the ACK/NACK joint feedback, and the 3-bit indication;
  • the UE determines, according to the feedback information, whether to retransmit, and whether a conflict occurs; for example, the detected feedback information is an ACK, but the conflict resolution ID is different from the corresponding ID, indicating that the conflict occurs, and the transmission is not correctly transmitted, and the retransmission is required. ;
  • the UE may perform resource pool selection according to whether a timing adjustment is received
  • the base station can detect multiple resource pools by means of blind detection.
  • the UE accesses the network and the data transmission randomly selects resources in the resource pool configured by the base station for uplink data transmission. After the first data transmission, data retransmission and new data transmission may also be performed according to the base station scheduling;
  • the number of OFDM symbols included in the transmission data subframe is less than the number of OFDM symbols in the uplink synchronization scenario subframe (subframe type one) of the 5G system, and the first of the transmission data subframes (subframe type 2)
  • the cyclic prefix of the OFDM symbol is greater than the cyclic prefix of the first OFDM symbol in the uplink synchronization scenario transmission data subframe (subframe type one) of the 5G system, or the first OFDM of the transmission data subframe (subframe type 2)
  • the cyclic prefix of the symbol is greater than or equal to the cyclic prefix of the 5G system uplink synchronization channel (subframe type 3);
  • the data transmission type includes at least one of the following:
  • the data includes an identifier ID, a BSR, a security information packet, and a connection request generated by the UE itself;
  • the data includes an identifier ID and a service data packet generated by the UE itself, and a short security information packet allocated by the base station;
  • the data includes an identifier ID and a service data packet generated by the UE itself;
  • the data includes an identifier ID, a BSR, and a connection request generated by the UE itself.
  • the base station blindly detects the data, and determines, according to the ID carried in the data, the UE corresponding to the data, according to the remaining traffic volume of the UE, after the base station decodes correctly, the UL Grant and the TA are sent to instruct the UE to transmit the new position in the scheduled location.
  • the data, and the timing adjustment amount implicitly inform the UE that the base station has successfully decoded, and may also allocate a user temporary identifier for scheduling transmission of subsequent data; or, by the UL Grant, only indicate that the UE transmits successfully; or, in the data corresponding to
  • the ACK/NACK is fed back on the downlink feedback channel, and the ACK/NACK is obtained on the downlink feedback channel of the UE to determine whether retransmission is needed.
  • the UE timing adjustment information may be transmitted to the UE through the physical downlink control channel or the physical downlink shared channel together with the UL Grant, or the timing adjustment information of multiple UEs may be transmitted together, or the timing adjustment information of multiple UEs may be The UL Grant is transmitted together;
  • the conflict resolution ID may also be carried, and the conflict resolution ID may be randomly generated according to the UE ID, or the random ID in the data may be directly used.
  • the conflict resolution ID takes a value of 0, 1, 2, and the ACK/NACK joint feedback, 2 bit indication;
  • the conflict resolution ID takes a value of 0,1, and is combined with the ACK/NACK feedback, and the 2 bit indication is performed;
  • the conflict resolution ID takes values of 0, 1, 2, 3, 4, 5, 6, and the ACK/NACK joint feedback, and the 3-bit indication;
  • the conflict resolution ID takes values of 0, 1, 2, 3, 4, 5, and the ACK/NACK joint feedback, and the 3-bit indication;
  • the UE may perform resource pool selection according to whether a timing adjustment is received
  • the base station can adopt blind detection.
  • the embodiment of the present application further provides a computer readable medium storing a data transmission program, and the data transmission program is implemented by a processor to implement the foregoing data transmission method.
  • the application can take the form of a hardware embodiment, a software embodiment, or an embodiment in combination with software and hardware.
  • the application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.
  • the present application refers to a method, device (system), and computer program according to an embodiment of the present invention.
  • the flow chart and/or block diagram of the product is described. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG.
  • These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.
  • computer storage medium includes volatile and nonvolatile, implemented in any method or technology for storing information, such as computer readable instructions, data structures, program modules or other data. Sex, removable and non-removable media.
  • Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridge, magnetic tape, magnetic disk storage or other magnetic storage device, or may Any other medium used to store the desired information and that can be accessed by the computer.
  • the letter medium typically includes computer readable instructions, data structures, program modules or other data in a modulated data signal, such as a carrier wave or other transport mechanism, and can include any information delivery media.
  • the embodiment of the present invention provides a data transmission method and device, which can transmit data more quickly, reduce delay, and improve system resource usage efficiency. Moreover, the impact on other user data transmission in an asynchronous scenario can be minimized.

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Abstract

本文公开了一种数据传输方法及装置,上述数据传输方法包括:第一传输节点在n个正交频分复用OFDM符号上传输数据;所述数据包括的比特数量大于1,所述数据编码后映射到所述n个OFDM符号上,n为大于1的整数;其中,第一个OFDM符号前包括第一循环前缀;除所述第一个OFDM符号以外的OFDM符号不包括循环前缀或者包括第二循环前缀;所述第一循环前缀的长度大于或等于所述第二循环前缀的长度。

Description

一种数据传输方法及装置 技术领域
本申请涉及但不限于无线通信领域,尤其涉及一种数据传输方法及装置。
背景技术
现有长期演进(LTE,Long Term Evolution)系统中,终端(UE,User Equipment)需要先进行上行同步才能够传输,上行同步包括以下四个步骤:第一步是UE传输物理随机接入信道(PRACH,Physical Random Access Channel);第二步基站根据UE发送的PRACH获得UE的定时调整量,并将定时调整信息和UE传输上行数据的调度信息发送给目标UE;第三步是UE根据基站发送给自己的定时调整信息和上行数据传输的调度信息来传输Msg3,其中,Msg3包括连接请求和用户标识等信息;第四步基站根据收到的用户标识信息和请求信息,反馈Msg4消息(包括用户标识和请求响应消息反馈)给目标UE,其中,PRACH为特定序列,PRACH资源池为基站配置,UE在配置的资源池中随机选择PRACH发送,存在两个UE选择相同PRACH的情况,而基站在PRACH检测过程中无法识别两个UE,所述第三步UE传输用户标识和第四步基站携带第三步的用户标识就是用于让用户识别自己是否接入成功,如果没有收到基站反馈的自己标识则认为没有成功,通常所述标识为用户全球唯一标识码(40比特)。
由于UE发送数据包前需要先同步,即使数据包很小也要进行所述接入过程,导致数据传输时延,同时,也增加了系统的不必要开销,影响了系统资源使用效率。
发明概述
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
本发明实施例提供了一种数据传输方法及装置,能够更快速地传输数据, 减少时延,提升系统资源的使用效率;同时,能够保证在非同步场景下对其他用户数据传输的影响尽量小。
本发明实施例提供的数据传输方法,包括:
第一传输节点在n个OFDM符号上传输数据;所述数据包括的比特数量大于1,所述数据编码后映射到所述n个OFDM符号上,n为大于1的整数;
其中,第一个OFDM符号前包括第一循环前缀;除所述第一个OFDM符号以外的OFDM符号不包括循环前缀或者包括第二循环前缀;所述第一循环前缀的长度大于或等于所述第二循环前缀的长度。
在示例性实施方式中,所述第一循环前缀的长度可以大于所述第一传输节点的时域不同步偏移量。
在示例性实施方式中,当第一个OFDM符号前包括第一循环前缀,且所述第一个OFDM符号以外的OFDM符号包括第二循环前缀时,除了第一循环前缀外的一个或多个循环前缀可以具有如下位置关系:
不同循环前缀以第一循环前缀为间隔;
不同循环前缀相邻,第一循环前缀位于第一个OFDM符号上,多个第二循环前缀之间连续且不交叉;
不同循环前缀相邻,第一循环前缀位于第一个OFDM符号上,多个第二循环前缀之间交叉。
在示例性实施方式中,所述n个OFDM符号后还可以包括保护间隔(GP)。
在示例性实施方式中,一个或多个循环前缀、n个OFDM符号以及GP的时域长度总和可以为2m的毫秒长度,其中,GP的时域长度大于或等于0,m为整数。
在示例性实施方式中,所述n个OFDM符号对应的时域位置可以由基站通过信令配置。
在示例性实施方式中,所述n值可以基于以下方式确定:预定义的方式确定、或者基站配置的方式确定、或者根据预定义参数确定,其中,所述预定义参数包括以下至少之一:所述数据的传输块大小、所述数据的类型、系统带宽、所述数据对应的覆盖级别、所述数据对应的重复次数、子载波间隔。
在示例性实施方式中,第一传输节点在n个OFDM符号上传输数据时,传输所述数据的频域带宽可以基于以下方式确定:预定义的方式确定、或者基站配置的方式确定、或者根据预定义参数确定,其中,所述预定义参数包括以下至少之一:所述数据的传输块大小、所述数据的类型、系统带宽、所述数据对应的覆盖级别、所述数据对应的重复次数、子载波间隔。
在示例性实施方式中,当所述第二循环前缀大于第一阈值时,所述第一循环前缀可以等于第二循环前缀;当所述第二循环前缀小于第一阈值时,所述第一循环前缀可以大于第二循环前缀。
在示例性实施方式中,当初始接入网络时,所述数据可以包括以下至少之一:第一传输节点自身携带的专有标识、建立连接请求消息、业务数据包;或者,当接入网络后发送数据时,所述数据可以包括以下至少之一:第二传输节点分配给所述第一传输节点的标识和业务数据包、第二传输节点分配的短安全信息包。
在示例性实施方式中,所述数据的重传、下一个新数据的传输以及数据对应的反馈方式,可以至少根据缓冲调度请求(BSR)、数据类型、数据块大小、所述数据对应的时长、所述数据对应的带宽确定。
在示例性实施方式中,所述数据的重传、下一个新数据的传输以及数据对应的反馈方式,根据BSR、数据类型、所述数据对应的时长、所述数据对应的带宽确定,可以包括以下至少之一:
当BSR的取值S大于阈值S1时,对应的传输方式包括:后续数据传输基于第二传输节点调度的方式;
当BSR的取值S小于阈值S2时,对应的反馈方式包括:第二传输节点仅反馈确认/否定(ACK/NACK)消息和随机标识信息中的至少一项,所述随机标识信息是第二传输节点根据所述第一传输节点上报的标识而随机产生,或者,所述第一传输节点随机产生后携带在所述数据中传输给第二传输节点;
当所述数据对应的时长取值A大于阈值A1时,对应的传输方式包括:后续数据传输基于第二传输节点调度的方式;
当所述数据对应的时长取值A小于阈值A2时,对应的反馈方式包括: 第二传输节点仅反馈ACK/NACK消息和随机标识信息中的至少一项,所述随机标识信息是第二传输节点根据所述第一传输节点上报的标识而随机产生,或者,所述第一传输节点随机产生后携带在所述数据中传输给第二传输节点;
当所述数据对应的带宽取值B大于阈值B1时,对应的传输方式包括:后续数据传输基于第二传输节点调度的方式;
当所述数据对应的带宽取值B小于阈值B2时,对应的反馈方式包括:第二传输节点仅反馈ACK/NACK消息和随机标识信息中的至少一项,所述随机标识信息是第二传输节点根据所述第一传输节点上报的标识而随机产生,或者,所述第一传输节点随机产生后携带在所述数据中传输给第二传输节点;
当所述数据类型为第一类型时,对应的传输方式包括:后续数据传输基于第二传输节点调度的方式;
当所述数据类型为第二类型时,对应的反馈方式包括:第二传输节点仅反馈ACK/NACK消息和随机标识信息中的至少一项,所述随机标识信息是第二传输节点根据所述第一传输节点上报的标识而随机产生,或者,所述第一传输节点随机产生后携带在所述数据中传输给第二传输节点。
在示例性实施方式中,上述方法还可以包括:
所述第一传输节点根据ACK/NACK消息和随机标识信息中的至少一项,确定是否进行数据重传。
在示例性实施方式中,上述方法还可以包括:
当所述第一传输节点仅获得NACK消息时,所述第一传输节点再次随机选择资源传输。
在示例性实施方式中,上述方法还可以包括:
当所述第一传输节点获得TA时,所述第一传输节点在第二资源集合中随机选择第二资源传输重传数据或新数据;其中,所述第二资源集合为基站配置的用于传输数据的多个第二资源的资源集合,所述第二资源为传输数据的基本单元,所述第二资源的频域带宽和时域长度基于预定义而确定;所述第二资源与基于第二传输节点调度发送数据的资源结构相同。
在示例性实施方式中,上述方法还可以包括:
当所述第一传输节点获得TA和上行授权,或者仅获得上行授权时,所述第一传输节点在所述上行授权指示的资源上发送重传数据和新数据。
在示例性实施方式中,上述方法还可以包括:
当所述第一传输节点获得随机标识时,如果所述随机标识与目标随机标识一致,则确定传输成功;如果不一致,则确定传输不成功,重新随机选择资源进行数据重传输。
在示例性实施方式中,所述第一传输节点可以根据当前系统中配置信息、预定义规则以及第一传输节点能力信息中的至少之一,确定传输方式;其中,所述预定义规则包括:所述第一传输节点根据传输数据大小或BSR的大小、传输数据对应的时域传输单元、传输数据对应的重复传输、系统配置的专有信息中的至少之一选择传输方式。
在示例性实施方式中,传输数据的方式可以包括以下方式至少之一:
第一传输节点根据第二传输节点配置免调度传输;第一传输节点根据第二传输节点反馈的ACK/NACK消息,免调度重传或新数据传输;
第一传输节点根据第二传输节点配置免调度传输;第一传输节点根据第二传输节点反馈的ACK/NACK消息和TA,免调度重传或新数据传输;根据第二传输节点反馈的TA,调整后传输数据;
第一传输节点根据第二传输节点配置免调度传输;第一传输节点根据第二传输节点反馈的上行调度授权(UL Grant)和TA,基于调度的重传或新数据传输;
第一传输节点根据第二传输节点配置免调度传输;第一传输节点根据第二传输节点反馈的UL Grant重传数据或传输新数据。
本发明实施例提供的数据传输装置,包括:
传输单元,配置为在n个OFDM符号上传输数据;其中,所述数据包括的比特数量大于1,所述数据编码后映射到所述n个OFDM符号上,n为大于1的整数;
其中,第一个OFDM符号前包括第一循环前缀;除所述第一个OFDM符号以外的OFDM符号不包括循环前缀或者包括第二循环前缀;所述第一循 环前缀的长度大于或等于所述第二循环前缀的长度。
在示例性实施方式中,所述第一循环前缀的长度可以大于第一传输节点的时域不同步偏移量。
在示例性实施方式中,当第一个OFDM符号前包括第一循环前缀,且所述第一个OFDM符号以外的OFDM符号包括第二循环前缀时,除了第一循环前缀外的一个或多个循环前缀可以具有如下位置关系:
不同循环前缀以第一循环前缀为间隔;
不同循环前缀相邻,第一循环前缀位于第一个OFDM符号上,多个第二循环前缀之间连续且不交叉;
不同循环前缀相邻,第一循环前缀位于第一个OFDM符号上,多个第二循环前缀之间交叉。
在示例性实施方式中,所述n个OFDM符号后还可以包括GP。
在示例性实施方式中,一个或多个循环前缀、n个OFDM符号以及GP的时域长度总和可以为2m的毫秒长度,其中,GP的时域长度大于或等于0,m为整数。
在示例性实施方式中,所述n个OFDM符号对应的时域位置可以由基站通过信令配置。
在示例性实施方式中,所述n值可以基于以下方式确定:预定义的方式确定、或者基站配置的方式确定、或者根据预定义参数确定,其中,所述预定义参数包括以下至少之一:所述数据的传输块大小、所述数据的类型、系统带宽、所述数据对应的覆盖级别、所述数据对应的重复次数、子载波间隔。
在示例性实施方式中,在n个OFDM符号上传输数据时,传输所述数据的频域带宽可以基于以下方式确定:预定义的方式确定、或者基站配置的方式确定、或者根据预定义参数确定,其中,所述预定义参数包括以下至少之一:所述数据的传输块大小、所述数据的类型、系统带宽、所述数据对应的覆盖级别、所述数据对应的重复次数、子载波间隔。
在示例性实施方式中,当所述第二循环前缀大于第一阈值时,所述第一循环前缀可以等于第二循环前缀;当所述第二循环前缀小于第一阈值时,所 述第一循环前缀可以大于第二循环前缀。
在示例性实施方式中,当初始接入网络时,所述数据可以包括以下至少之一:第一传输节点自身携带的专有标识、建立连接请求消息、业务数据包;或者,当接入网络后发送数据时,所述数据可以包括以下至少之一:第二传输节点分配给所述第一传输节点的标识和业务数据包、第二传输节点分配的短安全信息包。
在示例性实施方式中,所述数据的重传、下一个新数据的传输以及数据对应的反馈方式,可以至少根据BSR、数据类型、数据块大小、所述数据对应的时长、所述数据对应的带宽确定。
在示例性实施方式中,所述数据的重传、下一个新数据的传输以及数据对应的反馈方式,根据BSR、数据类型、所述数据对应的时长、所述数据对应的带宽确定,可以包括以下至少之一:
当BSR的取值S大于阈值S1时,对应的传输方式包括:后续数据传输基于第二传输节点调度的方式;
当BSR的取值S小于阈值S2时,对应的反馈方式包括:第二传输节点仅反馈ACK/NACK消息和随机标识信息中的至少一项,所述随机标识信息是第二传输节点根据所述第一传输节点上报的标识而随机产生,或者,所述第一传输节点随机产生后携带在所述数据中传输给第二传输节点;
当所述数据对应的时长取值A大于阈值A1时,对应的传输方式包括:后续数据传输基于第二传输节点调度的方式;
当所述数据对应的时长取值A小于阈值A2时,对应的反馈方式包括:第二传输节点仅反馈ACK/NACK消息和随机标识信息中的至少一项,所述随机标识信息是第二传输节点根据所述第一传输节点上报的标识而随机产生,或者,所述第一传输节点随机产生后携带在所述数据中传输给第二传输节点;
当所述数据对应的带宽取值B大于阈值B1时,对应的传输方式包括:后续数据传输基于第二传输节点调度的方式;
当所述数据对应的带宽取值B小于阈值B2时,对应的反馈方式包括:第二传输节点仅反馈ACK/NACK消息和随机标识信息中的至少一项,所述 随机标识信息是第二传输节点根据所述第一传输节点上报的标识而随机产生,或者,所述第一传输节点随机产生后携带在所述数据中传输给第二传输节点;
当所述数据类型为第一类型时,对应的传输方式包括:后续数据传输基于第二传输节点调度的方式;
当所述数据类型为第二类型时,对应的反馈方式包括:第二传输节点仅反馈ACK/NACK消息和随机标识信息中的至少一项,所述随机标识信息是第二传输节点根据所述第一传输节点上报的标识而随机产生,或者,所述第一传输节点随机产生后携带在所述数据中传输给第二传输节点。
在示例性实施方式中,上述装置还可以包括:
处理单元,配置为根据ACK/NACK消息和随机标识信息中的至少一项,确定是否进行数据重传。
在示例性实施方式中,所述传输单元,还可以配置为当所述第一传输节点仅获得NACK消息时,再次随机选择资源传输。
在示例性实施方式中,所述传输单元,还可以配置为当所述第一传输节点获得TA时,在第二资源集合中随机选择第二资源传输重传数据或新数据;其中,所述第二资源集合为基站配置的用于传输数据的多个第二资源的资源集合,所述第二资源为传输数据的基本单元,所述第二资源的频域带宽和时域长度基于预定义而确定;所述第二资源与基于第二传输节点调度发送数据的资源结构相同。
在示例性实施方式中,所述传输单元,还可以配置为当所述第一传输节点获得TA和上行授权,或者仅获得上行授权时,在所述上行授权指示的资源上发送重传数据和新数据。
在示例性实施方式中,所述处理单元,还可以配置为当所述第一传输节点获得随机标识时,如果所述随机标识与目标随机标识一致,则确定传输成功;如果不一致,则确定传输不成功,重新随机选择资源进行数据重传输。
在示例性实施方式中,所述传输单元还可以配置为根据当前系统中配置信息、预定义规则以及第一传输节点能力信息中的至少之一,确定传输方式;其中,所述预定义规则包括:所述第一传输节点根据传输数据大小或BSR的 大小、传输数据对应的时域传输单元、传输数据对应的重复传输、系统配置的专有信息中的至少之一选择传输方式。
在示例性实施方式中,传输数据的方式可以包括以下方式至少之一:
第一传输节点根据第二传输节点配置免调度传输;第一传输节点根据第二传输节点反馈的ACK/NACK消息,免调度重传或新数据传输;
第一传输节点根据第二传输节点配置免调度传输;第一传输节点根据第二传输节点反馈的ACK/NACK消息和TA,免调度重传或新数据传输;根据第二传输节点反馈的TA,调整后传输数据;
第一传输节点根据第二传输节点配置免调度传输;第一传输节点根据第二传输节点反馈的上行调度授权(UL Grant)和TA,基于调度的重传或新数据传输;
第一传输节点根据第二传输节点配置免调度传输;第一传输节点根据第二传输节点反馈的UL Grant重传数据或传输新数据。
此外,本申请实施例还提供一种计算机可读介质,存储有数据传输程序,该数据传输程序被处理器执行时实现上述的数据传输方法。
本发明实施例的技术方案中,在n个正交频分复用(OFDM)符号上传输数据;所述数据包括的比特数量大于1,所述数据编码后映射到所述n个OFDM符号上,n为大于1的整数;其中,第一个OFDM符号前包括第一循环前缀;除所述第一个OFDM符号以外的OFDM符号不包括循环前缀或者包括第二循环前缀;所述第一循环前缀的长度大于或等于所述第二循环前缀的长度;如此,能够更快速地传输数据,减少时延,提升系统资源的使用效率;同时,能够保证在非同步场景下对其他用户数据传输的影响尽量小。
在阅读并理解了附图和详细描述后,可以明白其他方面。
附图概述
图1为本发明实施例的数据传输信道结构示意图一;
图2为本发明实施例的数据传输信道结构示意图二;
图3为本发明实施例的数据传输信道结构示意图三;
图4为本发明实施例的数据传输信道结构示意图四;
图5为本发明实施例的数据传输信道结构示意图五;
图6为本发明实施例的数据传输方法的流程示意图;
图7为本发明实施例的数据传输装置的结构组成示意图。
详述
下面结合附图对本发明实施例的实现进行详细阐述,所附附图仅供参考说明之用,并非用来限定本发明实施例。
图6为本发明实施例的数据传输方法的流程示意图,如图6所示,所述数据传输方法包括:
步骤601:第一传输节点在n个OFDM符号上传输数据;所述数据包括的比特数量大于1,所述数据编码后映射到所述n个OFDM符号上,n为大于1的整数;其中,第一个OFDM符号前包括第一循环前缀;除所述第一个OFDM符号以外的OFDM符号不包括循环前缀或者包括第二循环前缀;所述第一循环前缀的长度大于或等于所述第二循环前缀的长度。
这里,第一传输节点可以是指:终端、基站、中继(relay)等节点设备。
本发明实施例中,所述第一循环前缀的长度可以大于所述第一传输节点的时域不同步偏移量。
比如:每个OFDM符号前添加循环前缀,第一个OFDM符号的第一循环前缀(CP1)大于其他OFDM符号的第二循环前缀(CP2),其他OFDM符号的循环前缀时域长度相同,第一循环前缀比较长主要是用于解决不同步场景下对时域上前面其他用户发送的数据干扰,其他OFDM符号的循环前缀主要用于解决多径延时导致的OFDM符号之间干扰,如图1所示。或者,仅第一个OFDM符号前添加循环前缀,其他OFDM符号不添加循环前缀,同样,第一循环前缀(CP1)比较长主要是用于解决不同步场景下对时域上前面其他用户发送的数据干扰,多径延时导致的OFDM符号之间干扰通过新波形调制解决,如:FB-OFDM等,如图2所示。
另外,除了第一个OFDM符号的循环前缀外,其他符号的循环前缀也可 以有一种或多种,其他OFDM符号的循环前缀都小于第一个OFDM符号的循环前缀;如图3所示和图4所示,有三种CP类型,还可以有4种、5种等更多。
本发明实施例中,当第一个OFDM符号前包括第一循环前缀,且所述第一个OFDM符号以外的OFDM符号包括第二循环前缀时,除了第一循环前缀外的一个或多个循环前缀可以具有如下位置关系:
不同循环前缀以第一循环前缀为间隔,如图3所示,CP2和CP3之间以CP1间隔;
不同循环前缀相邻,第一循环前缀位于第一个OFDM符号上,多个第二循环前缀之间连续且不交叉,如图4所示,CP2、CP3连续,不交叉;
不同循环前缀相邻,第一循环前缀位于第一个OFDM符号上,多个第二循环前缀之间交叉,如图5所示,CP2和CP3交叉。
本发明实施例中,所述n个OFDM符号后还可以包括保护间隔(GP)。
本发明实施例中,一个或多个循环前缀、n个OFDM符号以及GP的时域长度总和为2m的毫秒长度,其中,GP的时域长度大于或等于0,m为整数,如:-4,-3,-2,-1,0,1,2,3,4,8,16。
比如:所述n为7个OFDM符号,长CP长度为5.2微秒(us),短CP长度为4.7us,m为-1;或者,所述n为14个OFDM符号,长CP长度为5.7us,短CP长度为4.7us,m为0;或者,所述n为56个OFDM符号,长CP长度为8.7us,短CP长度为4.7us,m为2;或者,所述n为112个OFDM符号,长CP长度为12.7us,短CP长度为4.7,m为3;或者,所述n为13个OFDM符号,长CP长度为39.25us,短CP长度为4.7us,m为0,GP为剩余长度;或者,所述n为12个OFDM符号,长CP长度为75us,短CP长度为4.7us,m为0,GP为剩余长度;或者,所述n为11个OFDM符号,长CP长度为100us,短CP长度为4.7us,m为0,GP为剩余长度;或者,所述n为9个OFDM符号,长CP长度为100us(或83.4us或116.7us),短CP长度为16.7us,m为0,GP为剩余长度;或者,所述n为21个OFDM符号,长CP长度为100us,短CP长度为4.7us,m为1,GP为剩余长度;或者,所述n为3个OFDM符号,长CP长度为16.7us,短CP长度为4.7us, m为0,GP为剩余长度。
本发明实施例中,所述n个OFDM符号对应的时域位置可以由基站通过信令配置,如:通过配置周期和偏移位置获得。
本发明实施例中,所述n值可以基于以下方式确定:预定义的方式确定、或者基站配置的方式确定、或者根据预定义参数确定,其中,所述预定义参数包括以下至少之一:所述数据的传输块大小、所述数据的类型、系统带宽、所述数据对应的覆盖级别、所述数据对应的重复次数、子载波间隔。
这里,所述数据的类型例如有:控制信息、周期业务信息、非周期业务信息、调度请求信息、链接建立信息、第一传输节点能力信息。
对于LTE系统,所述n可以为6、7、12、13、14;对于NB-IoT(Narrow Band Internet of Things,窄带物联网)系统,所述n可以为6、7、12、13、14;对于新的无线系统,所述n可以为4、6、7、8、12、13、14、16,其中,时域上可以包括多个n个OFDM来构成所述数据传输的时域资源。
本发明实施例中,第一传输节点在n个OFDM符号上传输数据时,传输所述数据的频域带宽可以基于以下方式确定:预定义的方式确定、或者基站配置的方式确定、或者根据预定义参数确定,其中,所述预定义参数包括以下至少之一:所述数据的传输块大小、所述数据的类型、系统带宽、所述数据对应的覆盖级别、所述数据对应的重复次数、子载波间隔。
根据所述数据的传输块大小确定,如:传输大小为X1时,频域带宽为Y1,传输大小为X2时,频域带宽为Y2;或者,根据系统带宽确定,当系统带宽小于X3时,频域为全带宽,当系统带宽大于X3时,频域为配置带宽或预定义带宽;或者,当所述数据对应极端覆盖场景,频域为单子载波,当所述数据对应常规覆盖场景,频域为多个子载波,如:12个子载波,24个载波,或,单个资源块,或,两个资源块;
对于LTE系统,所述频域带宽为360千赫兹(KHz),对于NB-IoT系统,所述频域带宽为180kHz,对于新的无线系统,所述频域带宽为720kHz或1440kHz或1800khz;子载波间隔可以是3.75kHz、2.5kHz、15kHz、30kHz、60kHz或75kHz。
本发明实施例中,当所述第二循环前缀大于第一阈值时,所述第一循环前缀可以等于第二循环前缀;
当所述第二循环前缀小于第一阈值时,所述第一循环前缀可以大于第二循环前缀。
此外,第一循环前缀小于第二阈值时,第二循环前缀可以比第一循环前缀的2(或3,4)倍还大,第一循环前缀大于第二阈值时,第二循环前缀可以比第一循环前缀的1.5(或1.25)倍略大。
本发明实施例中,当初始接入网络时,所述数据可以包括以下至少之一:第一传输节点自身携带的专有标识、建立连接请求消息、业务数据包;或者,
当接入网络后发送数据时,所述数据可以包括以下至少之一:第二传输节点分配给所述第一传输节点的标识和业务数据包、第二传输节点分配的短安全信息包。
本发明实施例中,所述数据的重传、下一个新数据的传输以及数据对应的反馈方式,可以至少根据缓冲调度请求(BSR,Buffer Scheduling Request)、数据类型、数据块大小、所述数据对应的时长、所述数据对应的带宽确定。
所述数据的重传、下一个新数据的传输以及数据对应的反馈方式,根据BSR、数据类型、所述数据对应的时长、所述数据对应的带宽确定,可以包括以下至少之一:
当BSR的取值S大于阈值S1时,对应的传输方式包括:后续数据传输基于第二传输节点调度的方式;
当BSR的取值S小于阈值S2时,对应的反馈方式包括:第二传输节点仅反馈确认/否定(ACK/NACK)消息和随机标识信息中的至少一项,所述随机标识信息是第二传输节点根据所述第一传输节点上报的标识而随机产生,或者,所述第一传输节点随机产生后携带在所述数据中传输给第二传输节点;
当所述数据对应的时长取值A大于阈值A1时,对应的传输方式包括:后续数据传输基于第二传输节点调度的方式;
当所述数据对应的时长取值A小于阈值A2时,对应的反馈方式包括:第二传输节点仅反馈确认/否定(ACK/NACK)消息和随机标识信息中的至少 一项,所述随机标识信息是第二传输节点根据所述第一传输节点上报的标识而随机产生,或者,所述第一传输节点随机产生后携带在所述数据中传输给第二传输节点;
当所述数据对应的带宽取值B大于阈值B1时,对应的传输方式包括:后续数据传输基于第二传输节点调度的方式;
当所述数据对应的带宽取值B小于阈值B2时,对应的反馈方式包括:第二传输节点仅反馈确认/否定(ACK/NACK)消息和随机标识信息中的至少一项,所述随机标识信息是第二传输节点根据所述第一传输节点上报的标识而随机产生,或者,所述第一传输节点随机产生后携带在所述数据中传输给第二传输节点;
当所述数据类型为第一类型时,对应的传输方式包括:后续数据传输基于第二传输节点调度的方式;
当所述数据类型为第二类型时,对应的反馈方式包括:第二传输节点仅反馈确认/否定(ACK/NACK)消息和随机标识信息中的至少一项,所述随机标识信息是第二传输节点根据所述第一传输节点上报的标识而随机产生,或者,所述第一传输节点随机产生后携带在所述数据中传输给第二传输节点。
本发明实施例中,上述方法还可以包括:
步骤602:所述第一传输节点根据ACK/NACK消息和随机标识信息中的至少一项确定是否进行数据重传。
本发明实施例中,上述方法还可以包括:
当所述第一传输节点仅获得NACK消息时,所述第一传输节点再次随机选择资源传输。
本发明实施例中,上述方法还可以包括:
当所述第一传输节点获得时间提前量(TA)时,所述第一传输节点在第二资源集合中随机选择第二资源传输重传数据或新数据;其中,所述第二资源集合为基站配置的用于传输数据的多个第二资源的资源集合,所述第二资源为传输数据的基本单元,所述第二资源的频域带宽和时域长度基于预定义而确定,比如:LTE系统中2个物理资源块,或者,4个连续子帧的2个物 理资源块,或者,NB-IoT系统中2个资源单元(RU,Resource Unit),或者,4个RU,或者,8个RU;所述第二资源与基于第二传输节点调度发送数据的资源结构相同,如:子载波间隔、CP(Cyclic Prefix,循环前缀)长度和位置。
本发明实施例中,在发送所述数据时,需要进行定时调整。
本发明实施例中,上述方法还可以包括:
所述第一传输节点获得TA和上行授权,或者仅获得上行授权时,所述第一传输节点在所述上行授权指示的资源上发送重传数据和新数据。
本发明实施例中,上述方法还可以包括:
当所述第一传输节点获得随机标识时,如果所述随机标识与目标随机标识(根据上报ID产生的随机标识,或者,包括在数据的上报标识)一致,则确定传输成功;如果不一致,则确定传输不成功,重新随机选择资源进行数据重传输。
本发明实施例中,所述第一传输节点可以根据当前系统中配置信息、预定义规则以及第一传输节点能力信息中的至少之一,确定传输方式;
其中,所述预定义规则包括:所述第一传输节点根据传输数据大小或BSR的大小、传输数据对应的时域传输单元、传输数据对应的重复传输、系统配置的专有信息中的至少之一选择传输方式。
本发明实施例中,传输数据的方式可以包括以下方式至少之一:
第一传输节点根据第二传输节点配置免调度传输;第一传输节点根据第二传输节点反馈的ACK/NACK消息,免调度重传或新数据传输;
第一传输节点根据第二传输节点配置免调度传输;第一传输节点根据第二传输节点反馈的ACK/NACK消息和TA,免调度重传或新数据传输;根据第二传输节点反馈的TA,调整后传输数据;
第一传输节点根据第二传输节点配置免调度传输;第一传输节点根据第二传输节点反馈的上行调度授权(UL Grant)和TA,基于调度的重传或新数据传输;
第一传输节点根据第二传输节点配置免调度传输;第一传输节点根据第 二传输节点反馈的UL Grant重传数据或传输新数据。
例如:
方式1
步骤1a:基站免调度传输配置;
步骤1b:终端根据基站配置免调度传输;
步骤1c:基站反馈ACK/NACK;
步骤1d:终端根据基站反馈,免调度重传或新数据传输。
方式2
步骤2a:基站免调度传输配置;
步骤2b:终端根据基站配置免调度传输;
步骤2c:基站反馈ACK/NACK和TA;(首传反馈TA,后续传输不反馈TA);
步骤2d:终端根据基站反馈(ACK/NACK和TA),免调度的重传或新数据传输;根据收到的TA,调整后传输数据。
方式3
步骤3a:基站免调度传输配置;
步骤3b:终端根据基站配置免调度传输;
步骤3c:基站反馈UL Grant和TA,或者,UL Grant;(首传反馈TA,后续传输不反馈TA);
步骤3d:终端根据基站反馈(UL Grant和TA),基于调度的重传或新数据传输。
方式4
步骤4a:基站免调度传输配置;
步骤4b:终端根据基站配置免调度传输;
步骤4c:基站反馈UL Grant;
步骤4d:终端根据检测到的信息(基站反馈信息),重传数据或传输新 数据。
上述多种方式可以动态切换,例如:方式1和方式3结合形成方式5,方式1和方式4结合形成方式6。
方式5
步骤5a:基站免调度传输配置;
步骤5b:终端根据基站配置免调度传输;
步骤5c:基站按照步骤1c或3c反馈;
步骤5d:终端根据基站反馈,采用相应的步骤1c或3c重传数据或新数据传输。
方式6
步骤6a:基站免调度传输配置;
步骤6b:终端根据基站配置免调度传输;
步骤6c:基站按照步骤1c或4c反馈;
步骤6d:终端根据基站反馈,采用步骤1c或4c重传数据或新数据传输。
根据缓冲调度请求BSR、数据类型、数据块大小、所述数据对应的时长、所述数据对应的带宽选择非调度数据传输方式,还是调度方式数据传输;
通过所述非调度和调度方式的结合,可以减少由于非调度导致数据冲突产生的性能下降,同时,也可以利用调度方式补充提升数据传输的可靠性和传输效率的提升,针对不同场景选择不同的调度方式可以更好地实现数据传输,减少传输时延,提升传输效率。
图7为本发明实施例的数据传输装置的结构组成示意图,如图7所示,所述数据传输装置包括:
传输单元71,配置为在n个OFDM符号上传输数据;其中,所述数据包括的比特数量大于1,所述数据编码后映射到所述n个OFDM符号上,n为大于1的整数;
其中,第一个OFDM符号前包括第一循环前缀;除所述第一个OFDM符号以外的OFDM符号不包括循环前缀或者包括第二循环前缀;所述第一循 环前缀的长度大于或等于所述第二循环前缀的长度。
本发明实施例中,所述第一循环前缀的长度可以大于所述第一传输节点的时域不同步偏移量。所述数据传输装置设置在所述第一传输节点。
本发明实施例中,当第一个OFDM符号前包括第一循环前缀,且所述第一个OFDM符号以外的其他OFDM符号包括第二循环前缀时,除了第一循环前缀外的一个或多个循环前缀可以具有如下位置关系:
不同循环前缀以第一循环前缀为间隔;
不同循环前缀相邻,第一循环前缀位于第一个OFDM符号上,多个第二循环前缀之间连续且不交叉;
不同循环前缀相邻,第一循环前缀位于第一个OFDM符号上,多个第二循环前缀之间交叉。
本发明实施例中,所述n个OFDM符号后还可以包括GP。
本发明实施例中,一个或多个循环前缀、n个OFDM符号以及GP的时域长度总和可以为2m的毫秒长度,其中,GP的时域长度大于或等于0,m为整数。
本发明实施例中,所述n个OFDM符号对应的时域位置可以由基站通过信令配置。
本发明实施例中,所述n值可以基于以下方式确定:预定义的方式确定、或者基站配置的方式确定、或者根据预定义参数确定,其中,所述预定义参数包括以下至少之一:所述数据的传输块大小、所述数据的类型、系统带宽、所述数据对应的覆盖级别、所述数据对应的重复次数、子载波间隔。
本发明实施例中,在n个OFDM符号上传输数据时,传输所述数据的频域带宽可以基于以下方式确定:预定义的方式确定、或者基站配置的方式确定、或者根据预定义参数确定,其中,所述预定义参数包括以下至少之一:所述数据的传输块大小、所述数据的类型、系统带宽、所述数据对应的覆盖级别、所述数据对应的重复次数、子载波间隔。
本发明实施例中,当所述第二循环前缀大于第一阈值时,所述第一循环前缀可以等于第二循环前缀;
当所述第二循环前缀小于第一阈值时,所述第一循环前缀可以大于第二循环前缀。
本发明实施例中,当初始接入网络时,所述数据可以包括以下至少之一:第一传输节点自身携带的专有标识、建立连接请求消息、业务数据包;或者,
当接入网络后发送数据时,所述数据可以包括以下至少之一:第二传输节点分配给所述第一传输节点的标识和业务数据包、第二传输节点分配的短安全信息包。
本发明实施例中,所述数据的重传、下一个新数据的传输以及数据对应的反馈方式,可以至少根据缓冲调度请求(BSR)、数据类型、数据块大小、所述数据对应的时长、所述数据对应的带宽确定。
本发明实施例中,所述数据的重传、下一个新数据的传输以及数据对应的反馈方式,根据BSR、数据类型、所述数据对应的时长、所述数据对应的带宽确定,可以包括以下至少之一:
当BSR的取值S大于阈值S1时,对应的传输方式包括:后续数据传输基于第二传输节点调度的方式;
当BSR的取值S小于阈值S2时,对应的反馈方式包括:第二传输节点仅反馈确认/否定(ACK/NACK)消息和随机标识信息中的至少一项,所述随机标识信息是第二传输节点根据所述第一传输节点上报的标识而随机产生,或者,所述第一传输节点随机产生后携带在所述数据中传输给第二传输节点;
当所述数据对应的时长取值A大于阈值A1时,对应的传输方式包括:后续数据传输基于第二传输节点调度的方式;
当所述数据对应的时长取值A小于阈值A2时,对应的反馈方式包括:第二传输节点仅反馈确认/否定(ACK/NACK)消息和随机标识信息中的至少一项,所述随机标识信息是第二传输节点根据所述第一传输节点上报的标识而随机产生,或者,所述第一传输节点随机产生后携带在所述数据中传输给第二传输节点;
当所述数据对应的带宽取值B大于阈值B1时,对应的传输方式包括:后续数据传输基于第二传输节点调度的方式;
当所述数据对应的带宽取值B小于阈值B2时,对应的反馈方式包括:第二传输节点仅反馈确认/否定(ACK/NACK)消息和随机标识信息中的至少一项,所述随机标识信息是第二传输节点根据所述第一传输节点上报的标识而随机产生,或者,所述第一传输节点随机产生后携带在所述数据中传输给第二传输节点;
当所述数据类型为第一类型时,对应的传输方式包括:后续数据传输基于第二传输节点调度的方式;
当所述数据类型为第二类型时,对应的反馈方式包括:第二传输节点仅反馈确认/否定(ACK/NACK)消息和随机标识信息中的至少一项,所述随机标识信息是第二传输节点根据所述第一传输节点上报的标识而随机产生,或者,所述第一传输节点随机产生后携带在所述数据中传输给第二传输节点。
本发明实施例中,上述装置还可以包括:
处理单元72,配置为根据所述ACK/NACK消息和所述随机标识信息中的至少一项,确定是否进行数据重传。
本发明实施例中,所述传输单元71,还可以配置为当所述第一传输节点仅获得NACK消息时,再次随机选择资源传输。
本发明实施例中,所述传输单元71,还可以配置为当所述第一传输节点获得时间提前量(TA)时,在第二资源集合中随机选择第二资源传输重传数据或新数据;其中,所述第二资源集合为基站配置的用于传输数据的多个第二资源的资源集合,所述第二资源为传输数据的基本单元,所述第二资源的频域带宽和时域长度基于预定义而确定;所述第二资源与基于第二传输节点调度发送数据的资源结构相同。
本发明实施例中,所述传输单元71,还可以配置为当所述第一传输节点获得TA和上行授权,或者仅获得上行授权时,在所述上行授权指示的资源上发送重传数据和新数据。
本发明实施例中,所述处理单元72,还可以配置为当所述第一传输节点获得随机标识时,如果所述随机标识与目标随机标识一致,则确定传输成功;如果不一致,则确定传输不成功,重新随机选择资源进行数据重传输。
本发明实施例中,传输数据的方式可以包括以下方式至少之一:
第一传输节点根据第二传输节点配置免调度传输;第一传输节点根据第二传输节点反馈的ACK/NACK消息,免调度重传或新数据传输;
第一传输节点根据第二传输节点配置免调度传输;第一传输节点根据第二传输节点反馈的ACK/NACK消息和TA,免调度重传或新数据传输;根据第二传输节点反馈的TA,调整后传输数据;
第一传输节点根据第二传输节点配置免调度传输;第一传输节点根据第二传输节点反馈的上行调度授权(UL Grant)和TA,基于调度的重传或新数据传输;
第一传输节点根据第二传输节点配置免调度传输;第一传输节点根据第二传输节点反馈的UL Grant重传数据或传输新数据。
所述第二传输节点可以包括终端、基站、中继(relay)等节点设备。
所述传输包括发送和或接收,例如:终端向基站发送数据,基站接收终端发送的数据,所述装置可以位于终端,也可以位于基站,或者,基站向终端发送数据,终端接收基站发送的数据,所述装置可以位于终端,也可以位于基站,或者,第一终端向第二终端发送数据,第二终端接收第一终端发送的数据,所述装置可以位于第一终端,也可以位于第二终端,或者,终端向中继发送数据,中继接收终端发送的数据,所述装置可以位于终端,也可以位于中继,或者,中继向基站发送数据,基站接收中继发送的数据,所述装置可以位于基站,也可以位于中继,或者,中继向终端发送数据,终端接收中继发送的数据,所述装置可以位于终端,也可以位于中继,或者,基站向中继发送数据,中继接收基站发送的数据,所述装置可以位于基站,也可以位于中继。
所述第一循环前缀长度还可以是比所述第二循环前缀长度的1.5、2、5、10、50、100、500等倍还大。
针对小区半径不同,第一循环前缀和第二循环前缀的关系不同。
另外,再结合整体长度取整的约束,在上述限定基础上第一循环前缀长度和第二循环前缀长度可以自适应的扩展。
所述数据的第一类型可以包括接入请求,或,数据传输请求,或,链路建立请求;
所述数据的第二类型可以包括非接入请求,或,非数据传输请求,或,非链路建立请求。
所述S1、S2、A1、A2、B1、B2等阈值为预定义值,或者,第二传输节点配置值,或者,第一传输节点广播值。
所述第一传输节点可以根据当前系统中配置信息和预定义规则以及第一传输节点能力信息中至少之一,确定传输方式;
其中,所述预定义规则可以包括:所述第一传输节点根据传输数据大小或BSR的大小、传输数据对应的时域传输单元、传输数据对应的重复传输、系统配置的专有信息中至少之一选择传输方式。
例如:
场景1:
系统中仅配置了基于调度的传输方式,所述第一传输节点发送调度请求,等待调度后再传输数据,或者,所述第一传输节点发送随机接入信道,获得TA后,根据调度和TA传输数据。
场景2:
系统中仅配置了非调度的传输方式,所述第一传输节点直接按照上述方式传输数据。
场景3:
系统中配置了非调度的传输资源和基于调度的随机接入信道资源,所述第一传输节点根据传输数据大小或BSR的大小以及所述第一传输节点能力信息选择传输,如:
当所述第一传输节点支持非调度传输方式时,所述数据大小或BSR的大小比阈值k1小,采用非调度方式传输,所述第一传输节点按照上述方式传输数据;所述数据大小或BSR的大小比阈值k2大,采用其他传输方式,如:所述第一传输节点发送调度请求,等待调度后再传输数据,或,所述第一传输节点发送随机接入信道,获得TA后,根据调度和TA传输数据;
当所述第一传输节点不支持非调度传输方式时,采用其他传输方式,如:所述第一传输节点发送调度请求,等待调度后再传输数据,或,所述第一传输节点发送随机接入信道,获得TA后,根据调度和TA传输数据。
场景4:
系统中配置了非调度的传输资源和基于调度的随机接入信道资源,所述第一传输节点根据传输数据对应的时域传输单元选择传输;
所述时域传输单元可以包括一个传输块编码后对应时域长度,例如:常规数据对应的时长为1ms,特殊数据传输时长为0.5ms,或者,所述时域传输单元对应时域OFDM符号的大小,例如:常规数据对应的时域OFDM符号的大小为66.7us,特殊数据对应的时域OFDM符号的大小为33.375us;
当所述第一传输节点支持非调度传输方式时,所述数据对应的时域传输单元比阈值t1小(如:对于时延比较敏感业务,或,所述时域传输单元比常规时域传输单元小),采用非调度方式传输,所述第一传输节点按照上述方式传输数据;所述数据对应的时域传输单元比阈值t2大(如:对于时延不敏感业务,或,所述时域传输单元为常规时域传输单元),采用其他传输方式,如:所述第一传输节点发送调度请求,等待调度后再传输数据,或,所述第一传输节点发送随机接入信道,获得TA后,根据调度和TA传输数据;
当所述第一传输节点不支持非调度传输方式时,采用其他传输方式,如:所述第一传输节点发送调度请求,等待调度后再传输数据,或,所述第一传输节点发送随机接入信道,获得TA后,根据调度和TA传输数据。
场景5:
系统中配置了非调度的传输资源和基于调度的随机接入信道资源,所述第一传输节点根据传输数据对应的重复传输次数选择传输;
所述重复传输次数主要是指覆盖增强场景下通过重复传输提升覆盖的方式,不同覆盖等级可以对应不同的重复次数,也不排除非覆盖增强场景下的重复传输;
当所述第一传输节点支持非调度传输方式时,所述数据对应的重复传输次数比阈值x1小,采用非调度方式传输,所述第一传输节点按照上述方式传 输数据;所述数据对应的重复传输次数比阈值x2大,采用其他传输方式,如:所述第一传输节点发送调度请求,等待调度后再传输数据,或,所述第一传输节点发送随机接入信道,获得TA后,根据调度和TA传输数据;
当所述第一传输节点不支持非调度传输方式时,采用其他传输方式,如:所述第一传输节点发送调度请求,等待调度后再传输数据,或,所述第一传输节点发送随机接入信道,获得TA后,根据调度和TA传输数据。
场景6:
系统中配置了非调度的传输资源和基于调度的随机接入信道资源,所述第一传输节点根据系统配置的专有信息选择传输;
所述系统配置的专有信息主要是指第一传输节点接入网络后系统配置所述第一传输节点的专有信息,所述专有信息包括指示所述传输节点是否采用非调度方式(本申请提出的传输方式),所述系统包括所述第二传输节点,或者,第三传输节点,其中,所述第三传输节点包括与第一传输节点或第二传输节点同类型节点,或者,更高级传输节点,如:MME(Mobility Management Entity,移动管理实体)、特定服务器或网元;
当所述第一传输节点支持非调度传输方式时,所述第一传输节点在获取所述专有配置信息后,所述第一传输节点在所述系统中按照上述方式传输数据;如果所述第一传输节点连接失败,或者,切换到其他系统(如:小区切换,或者,系统切换),则,采用其他传输方式,如:所述第一传输节点发送调度请求,等待调度后再传输数据,或,所述第一传输节点发送随机接入信道,获得TA后,根据调度和TA传输数据;
当所述第一传输节点不支持非调度传输方式时,采用其他传输方式,如:所述第一传输节点发送调度请求,等待调度后再传输数据,或,所述第一传输节点发送随机接入信道,获得TA后,根据调度和TA传输数据。
上述场景3、4、5、6中预定规则也可以选择多个同时使用,如:多个条件同时满足时,采用非调度传输方式,按照本申请所述传输方式传输数据,否则,采用其他传输方式,如:所述第一传输节点发送调度请求,等待调度后再传输数据,或,所述第一传输节点发送随机接入信道,获得TA后,根据调度和TA传输数据。
下面结合应用场景对本发明实施例的数据传输方法再作进一步详细描述。
实施例一
LTE系统数据传输;也应用于eMTC(增强机器类通信,enhanced Machine Type Communication)场景;
所述资源池为周期配置的资源,在一个基本时域单元上可以有一个或多个频域资源用于用户资源选择,时域上可以有多种周期,如:5ms、10ms、20ms、40ms、80ms、160ms,一个周期内时域上可以有一个或多个位置,如:20ms内3个时域位置,40ms内3个时域位置等;一个时域单元的频域上可以有一个或多个,如:1个、2个、4个;时域单元可以是1ms、2ms、4ms、8ms;频域带宽可以是2个、3个、4个、6个、8个PRB(Physical Resource Block,物理资源块)。
应用1
UE接入网络采用相关LTE过程,连接态后通过基站配置,UE同时检测下行控制信息(DL Grant,UL Grant),还可以在基站配置的资源池内随机选择资源进行上行数据传输。
上行数据传输的子帧结构与LTE子帧结构相同。
所述数据传输类型包括以下至少之一:
所述数据包括基站分配给所述UE的标识ID,BSR,安全信息包,连接请求;
所述数据包括基站分配给所述UE的标识ID和业务数据包,基站分配的短安全信息包;
所述数据包括基站分配给所述UE的标识ID和业务数据包;
所述数据包括基站分配给所述UE的标识ID,BSR,连接请求。
上述各种类型数据中还可以包括UE随机ID,该随机ID比特数量小于基站分配的ID,如:2比特、3比特、4比特;
需要注意的是:当所述数据有多种类型时,可以根据不同场景选择不同数据类型,如:初始接入选择类型一,RRC(Radio Resource Control,无线 资源控制)建立后选择类型二,连接态选择类型三,空闲态选择类型四,寻呼唤醒选择类型五。
基站接收所述数据,根据所述数据中携带的ID确定所述数据对应的UE,根据该UE剩余业务量大小,当基站解码正确后发送UL Grant指示UE在调度的位置上传输新数据,隐含告知UE,基站已经成功解码;或,通过UL Grant仅指示UE发送成功;或者,在所述数据对应的下行反馈信道上反馈ACK/NACK,UE所述下行反馈信道上获取ACK/NACK,确定是否需要重传;
其中,UE定时调整信息可以和所述UL Grant一起通过物理下行控制信道或物理下行共享信道传输给UE,或者,多个UE的定时调整信息一起传输下去,或者,多个UE的定时调整信息和UL Grant一起传输下去;
当传输所述ACK/NACK时,还可以携带冲突解决ID,所述冲突解决ID可以是根据UE ID随机产生,也可以直接使用所述数据中随机ID。
例如:冲突解决ID取值为0,1,2,与所述ACK/NACK联合反馈,2比特指示;
00:NACK;01:ACK且冲突解决ID=0;10:ACK且冲突解决ID=1;11:ACK且冲突解决ID=2;或者,
冲突解决ID取值为0,1,与所述ACK/NACK联合反馈,2比特指示;
00:NACK;01:ACK且冲突解决ID=0;10:ACK且冲突解决ID=1;11:ACK(资源冲突的多个UE全部解码正确);或者,
冲突解决ID取值为0,1,2,3,4,5,6,与所述ACK/NACK联合反馈,3比特指示;
000:NACK;001:ACK且冲突解决ID=0;010:ACK且冲突解决ID=1;011:ACK且冲突解决ID=2;100:ACK且冲突解决ID=3;101:ACK且冲突解决ID=4;110:ACK且冲突解决ID=5;111:ACK且冲突解决ID=6;或者,
冲突解决ID取值为0,1,2,3,4,5,与所述ACK/NACK联合反馈,3比特指示;
000:NACK;001:ACK且冲突解决ID=0;010:ACK且冲突解决ID=1; 011:ACK且冲突解决ID=2;100:ACK且冲突解决ID=3;101:ACK且冲突解决ID=4;110:ACK且冲突解决ID=5;111:ACK(资源冲突的多个UE全部解码正确)。
UE根据所述反馈信息确定是否要重传,以及是否发生冲突;如:检测到的反馈信息为ACK,但冲突解决ID与自身对应的ID不同,说明发生冲突,自己没有传输正确,需要重传;
UE根据所述定时调整信息重传数据或传输新数据;
传输所述数据的资源池可以有一个,也可以有多个,如:两个资源池,一个用于收到定时调整后数据传输,一个用于没有定时调整的数据传输;
UE可以根据是否收到定时调整进行资源池选择;
基站可以采用盲检测的方式对多个资源池检测。
应用2
UE接入网络和数据传输在基站配置的资源池内随机选择资源进行上行数据传输,首次数据传输后,还可以根据基站调度进行数据重传和新数据传输;
所述传输数据子帧中包括的OFDM符号少于LTE传输PUSCH子帧中的OFDM符号,所述传输数据子帧的第一个OFDM符号的循环前缀大于LTE传输PUSCH子帧中第一个OFDM符号的循环前缀,或者,所述传输数据子帧的第一个OFDM符号的循环前缀大于或等于LTE传输PRACH的循环前缀;
所述数据传输类型包括以下至少之一:
所述数据包括UE自身产生的标识ID,BSR,安全信息包,连接请求;
所述数据包括UE自身产生的标识ID和业务数据包,基站分配的短安全信息包;
所述数据包括UE自身产生的标识ID和业务数据包;
所述数据包括UE自身产生的标识ID,BSR,连接请求。
基站盲检测所述数据,根据所述数据中携带的ID确定所述数据对应的 UE,根据该UE剩余业务量大小,当基站解码正确后发送UL Grant和TA指示UE在调度的位置上传输新数据,以及定时调整量,隐含告知UE,基站已经成功解码,还可以分配用户临时标识,用于后续数据的调度传输;或,通过UL Grant仅指示UE发送成功;或者,在所述数据对应的下行反馈信道上反馈ACK/NACK,UE所述下行反馈信道上获取ACK/NACK,确定是否需要重传。
其中,UE定时调整信息可以和所述UL Grant一起通过物理下行控制信道或物理下行共享信道传输给UE,或者,多个UE的定时调整信息一起传输下去,或者,多个UE的定时调整信息和UL Grant一起传输下去。
当传输所述ACK/NACK时,还可以携带冲突解决ID,所述冲突解决ID可以是根据UE ID随机产生,也可以直接使用所述数据包中随机ID。
例如:冲突解决ID取值为0,1,2,与所述ACK/NACK联合反馈,2比特指示;
00:NACK;01:ACK且冲突解决ID=0;10:ACK且冲突解决ID=1;11:ACK且冲突解决ID=2;或者,
冲突解决ID取值为0,1,与所述ACK/NACK联合反馈,2比特指示;
00:NACK;01:ACK且冲突解决ID=0;10:ACK且冲突解决ID=1;11:ACK(资源冲突的多个UE全部解码正确);或者,
冲突解决ID取值为0,1,2,3,4,5,6,与所述ACK/NACK联合反馈,3比特指示;
000:NACK;001:ACK且冲突解决ID=0;010:ACK且冲突解决ID=1;011:ACK且冲突解决ID=2;100:ACK且冲突解决ID=3;101:ACK且冲突解决ID=4;110:ACK且冲突解决ID=5;111:ACK且冲突解决ID=6;或者,
冲突解决ID取值为0,1,2,3,4,5,与所述ACK/NACK联合反馈,3比特指示;
000:NACK;001:ACK且冲突解决ID=0;010:ACK且冲突解决ID=1;011:ACK且冲突解决ID=2;100:ACK且冲突解决ID=3;101:ACK且冲 突解决ID=4;110:ACK且冲突解决ID=5;111:ACK(资源冲突的多个UE全部解码正确)。
UE根据所述定时调整信息重传数据或传输新数据;
传输所述数据的资源池可以有一个,也可以有多个,如:两个资源池,一个用于收到定时调整后数据传输,一个用于没有定时调整的数据传输;
UE可以根据是否收到定时调整进行资源池选择;
基站可以采用盲检测的方式。
实施例二
NB-IoT系统数据传输;
所述资源池为周期配置的资源,在一个基本时域单元上可以有一个或多个频域资源用于用户资源选择,时域上可以有多种周期,如:2ms、4ms、8ms、16ms、32ms、64ms、128ms、256ms、512ms、1024ms、4048ms,一个周期内时域上可以有一个或多个位置,如:32ms内4个时域位置,128ms内2个时域位置等;一个时域单元的频域上可以有一个或多个,如:1个、2个、4个;时域单元可以是1ms、2ms、4ms、8ms、16ms、32ms、64ms;频域带宽可以是1个、3个、6个、12个tone。
应用1
UE接入网络采用相关LTE过程,连接态后通过基站配置,UE同时检测下行控制信息(DL Grant,UL Grant),还可以在基站配置的资源池内随机选择资源进行上行数据传输。
上行数据传输的子帧结构与LTE子帧结构相同。
所述数据传输类型包括以下至少之一:
所述数据包括基站分配给所述UE的标识ID,BSR,安全信息包,连接请求;
所述数据包括基站分配给所述UE的标识ID和业务数据包,基站分配的短安全信息包;
所述数据包括基站分配给所述UE的标识ID和业务数据包;
所述数据包括基站分配给所述UE的标识ID,BSR,连接请求。
上述各种类型数据中还可以包括UE随机ID,该随机ID比特数量小于基站分配的ID,如:2比特、3比特、4比特;
需要注意的是:当所述数据有多种类型时,可以根据不同场景选择不同数据类型,如:初始接入选择类型一,RRC建立后选择类型二,连接态选择类型三,空闲态选择类型四,寻呼唤醒选择类型五。
基站接收所述数据,根据所述数据中携带的ID确定所述数据对应的UE,根据该UE剩余业务量大小,当基站解码正确后发送UL Grant指示UE在调度的位置上传输新数据,隐含告知UE,基站已经成功解码;或,通过UL Grant仅指示UE发送成功;或者,在所述数据对应的下行反馈信道上反馈ACK/NACK,UE所述下行反馈信道上获取ACK/NACK,确定是否需要重传;
其中,UE定时调整信息可以和所述UL Grant一起通过物理下行控制信道或物理下行共享信道传输给UE,或者,多个UE的定时调整信息一起传输下去,或者,多个UE的定时调整信息和UL Grant一起传输下去;
当传输所述ACK/NACK时,还可以携带冲突解决ID,所述冲突解决ID可以是根据UE ID随机产生,也可以直接使用所述数据中随机ID。
例如:冲突解决ID取值为0,1,2,与所述ACK/NACK联合反馈,2比特指示;
00:NACK;01:ACK且冲突解决ID=0;10:ACK且冲突解决ID=1;11:ACK且冲突解决ID=2;或者,
冲突解决ID取值为0,1,与所述ACK/NACK联合反馈,2比特指示;
00:NACK;01:ACK且冲突解决ID=0;10:ACK且冲突解决ID=1;11:ACK(资源冲突的多个UE全部解码正确);或者,
冲突解决ID取值为0,1,2,3,4,5,6,与所述ACK/NACK联合反馈,3比特指示;
000:NACK;001:ACK且冲突解决ID=0;010:ACK且冲突解决ID=1;011:ACK且冲突解决ID=2;100:ACK且冲突解决ID=3;101:ACK且冲突解决ID=4;110:ACK且冲突解决ID=5;111:ACK且冲突解决ID=6; 或者,
冲突解决ID取值为0,1,2,3,4,5,与所述ACK/NACK联合反馈,3比特指示;
000:NACK;001:ACK且冲突解决ID=0;010:ACK且冲突解决ID=1;011:ACK且冲突解决ID=2;100:ACK且冲突解决ID=3;101:ACK且冲突解决ID=4;110:ACK且冲突解决ID=5;111:ACK(资源冲突的多个UE全部解码正确)。
UE根据所述反馈信息确定是否要重传,以及是否发生冲突;如:检测到的反馈信息为ACK,但冲突解决ID与自身对应的ID不同,说明发生冲突,自己没有传输正确,需要重传;
UE根据所述定时调整信息重传数据或传输新数据;
传输所述数据的资源池可以有一个,也可以有多个,如:两个资源池,一个用于收到定时调整后数据传输,一个用于没有定时调整的数据传输;
UE可以根据是否收到定时调整进行资源池选择;
基站可以采用盲检测的方式对多个资源池检测。
应用2
UE接入网络和数据传输在基站配置的资源池内随机选择资源进行上行数据传输,首次数据传输后,还可以根据基站调度进行数据重传和新数据传输;
所述传输数据子帧中包括的OFDM符号少于LTE传输PUSCH子帧中的OFDM符号,所述传输数据子帧的第一个OFDM符号的循环前缀大于LTE传输PUSCH子帧中第一个OFDM符号的循环前缀,或者,所述传输数据子帧的第一个OFDM符号的循环前缀大于或等于LTE传输PRACH的循环前缀;
所述数据传输类型包括以下至少之一:
所述数据包括UE自身产生的标识ID,BSR,安全信息包,连接请求;
所述数据包括UE自身产生的标识ID和业务数据包,基站分配的短安全 信息包;
所述数据包括UE自身产生的标识ID和业务数据包;
所述数据包括UE自身产生的标识ID,BSR,连接请求。
基站盲检测所述数据,根据所述数据中携带的ID确定所述数据对应的UE,根据该UE剩余业务量大小,当基站解码正确后发送UL Grant和TA指示UE在调度的位置上传输新数据,以及定时调整量,隐含告知UE,基站已经成功解码,还可以分配用户临时标识,用于后续数据的调度传输;或,通过UL Grant仅指示UE发送成功;或者,在所述数据对应的下行反馈信道上反馈ACK/NACK,UE所述下行反馈信道上获取ACK/NACK,确定是否需要重传。
其中,UE定时调整信息可以和所述UL Grant一起通过物理下行控制信道或物理下行共享信道传输给UE,或者,多个UE的定时调整信息一起传输下去,或者,多个UE的定时调整信息和UL Grant一起传输下去;
当传输所述ACK/NACK时,还可以携带冲突解决ID,所述冲突解决ID可以是根据UE ID随机产生,也可以直接使用所述数据中随机ID。
例如:冲突解决ID取值为0,1,2,与所述ACK/NACK联合反馈,2比特指示;
00:NACK;01:ACK且冲突解决ID=0;10:ACK且冲突解决ID=1;11:ACK且冲突解决ID=2;或者,
冲突解决ID取值为0,1,与所述ACK/NACK联合反馈,2比特指示;
00:NACK;01:ACK且冲突解决ID=0;10:ACK且冲突解决ID=1;11:ACK(资源冲突的多个UE全部解码正确);或者,
冲突解决ID取值为0,1,2,3,4,5,6,与所述ACK/NACK联合反馈,3比特指示;
000:NACK;001:ACK且冲突解决ID=0;010:ACK且冲突解决ID=1;011:ACK且冲突解决ID=2;100:ACK且冲突解决ID=3;101:ACK且冲突解决ID=4;110:ACK且冲突解决ID=5;111:ACK且冲突解决ID=6;或者,
冲突解决ID取值为0,1,2,3,4,5,与所述ACK/NACK联合反馈,3比特指示;
000:NACK;001:ACK且冲突解决ID=0;010:ACK且冲突解决ID=1;011:ACK且冲突解决ID=2;100:ACK且冲突解决ID=3;101:ACK且冲突解决ID=4;110:ACK且冲突解决ID=5;111:ACK(资源冲突的多个UE全部解码正确)。
UE根据所述定时调整信息重传数据或传输新数据;
传输所述数据的资源池可以有一个,也可以有多个,如:两个资源池,一个用于收到定时调整后数据传输,一个用于没有定时调整的数据传输;
UE可以根据是否收到定时调整进行资源池选择;
基站可以采用盲检测的方式。
实施例三
5G系统(新系统)数据传输;
所述资源池为周期配置的资源,在一个基本时域单元上可以有一个或多个频域资源用于用户资源选择,时域上可以有多种周期,如:2ms、4ms、8ms、16ms、32ms、64ms、128ms、256ms、512ms、1024ms、4048ms,或者,1ms、2ms、5ms、10ms、20ms、40ms、80ms、160ms、320ms、640ms,或者,0.1ms、0.125ms、0.25ms、0.5ms、1ms,一个周期内时域上可以有一个或多个位置,如:5ms内2个时域位置,20ms内3个时域位置等;一个时域单元的频域上可以有一个或多个,如:1个、2个、4个;时域单元可以是1ms、2ms、4ms、8ms、16ms、32ms、64ms;频域带宽可以是1个、3个、6个、12个tone,或者,1个物理资源块,或者,2个物理资源块,或者,4个物理资源块,或者,6个物理资源块,或者,10个物理资源块,或者,12个物理资源块等。
子载波间隔可以是1.25kHz、2.5kHz、3.75kHz、7.5kHz、15kHz、30kHz、60kHz、75kHz、90kHz、120kHz、150kHz。
应用1
UE先与基站进行上行同步,接入网络后通过基站配置,UE可以检测下行控制信息,也可以在基站配置的资源池内随机选择资源进行上行数据传输。
上行数据传输的子帧结构采用5G系统上行同步场景的子帧结构。
所述数据传输类型包括以下至少之一:
所述数据包括基站分配给所述UE的标识ID,BSR,安全信息包,连接请求;
所述数据包括基站分配给所述UE的标识ID和业务数据包,基站分配的短安全信息包;
所述数据包括基站分配给所述UE的标识ID和业务数据包;
所述数据包括基站分配给所述UE的标识ID,BSR,连接请求。
上述各种类型数据中还可以包括UE随机ID,该随机ID比特数量小于基站分配的ID,如:2比特、3比特、4比特;
需要注意的是:当所述数据有多种类型时,可以根据不同场景选择不同数据类型,如:初始接入选择类型一,RRC建立后选择类型二,连接态选择类型三,空闲态选择类型四,寻呼唤醒选择类型五。
基站接收所述数据,根据所述数据中携带的ID确定所述数据对应的UE,根据该UE剩余业务量大小,当基站解码正确后发送UL Grant指示UE在调度的位置上传输新数据,隐含告知UE,基站已经成功解码;或,通过UL Grant仅指示UE发送成功;或者,在所述数据对应的下行反馈信道上反馈ACK/NACK,UE所述下行反馈信道上获取ACK/NACK,确定是否需要重传;
其中,UE定时调整信息可以和所述UL Grant一起通过物理下行控制信道或物理下行共享信道传输给UE,或者,多个UE的定时调整信息一起传输下去,或者,多个UE的定时调整信息和UL Grant一起传输下去;
当传输所述ACK/NACK时,还可以携带冲突解决ID,所述冲突解决ID可以是根据UE ID随机产生,也可以直接使用所述数据中随机ID。
例如:冲突解决ID取值为0,1,2,与所述ACK/NACK联合反馈,2比特指示;
00:NACK;01:ACK且冲突解决ID=0;10:ACK且冲突解决ID=1;11:ACK且冲突解决ID=2;或者,
冲突解决ID取值为0,1,与所述ACK/NACK联合反馈,2比特指示;
00:NACK;01:ACK且冲突解决ID=0,10:ACK且冲突解决ID=1;11:ACK(资源冲突的多个UE全部解码正确),或者,
冲突解决ID取值为0,1,2,3,4,5,6,与所述ACK/NACK联合反馈,3比特指示;
000:NACK;001:ACK且冲突解决ID=0;010:ACK且冲突解决ID=1;011:ACK且冲突解决ID=2;100:ACK且冲突解决ID=3;101:ACK且冲突解决ID=4;110:ACK且冲突解决ID=5;111:ACK且冲突解决ID=6;或者,
冲突解决ID取值为0,1,2,3,4,5,与所述ACK/NACK联合反馈,3比特指示;
000:NACK;001:ACK且冲突解决ID=0;010:ACK且冲突解决ID=1;011:ACK且冲突解决ID=2;100:ACK且冲突解决ID=3;101:ACK且冲突解决ID=4;110:ACK且冲突解决ID=5;111:ACK(资源冲突的多个UE全部解码正确)。
UE根据所述反馈信息确定是否要重传,以及是否发生冲突;如:检测到的反馈信息为ACK,但冲突解决ID与自身对应的ID不同,说明发生冲突,自己没有传输正确,需要重传;
UE根据所述定时调整信息重传数据或传输新数据;
传输所述数据的资源池可以有一个,也可以有多个,如:两个资源池,一个用于收到定时调整后数据传输,一个用于没有定时调整的数据传输;
UE可以根据是否收到定时调整进行资源池选择;
基站可以采用盲检测的方式对多个资源池检测。
应用2
UE接入网络和数据传输在基站配置的资源池内随机选择资源进行上行数据传输,首次数据传输后,还可以根据基站调度进行数据重传和新数据传输;
所述传输数据子帧中包括的OFDM符号少于5G系统上行同步场景子帧(子帧类型一)中传输数据的OFDM符号数量,所述传输数据子帧(子帧类型二)的第一个OFDM符号的循环前缀大于5G系统上行同步场景传输数据子帧(子帧类型一)中第一个OFDM符号的循环前缀,或者,所述传输数据子帧(子帧类型二)的第一个OFDM符号的循环前缀大于或等于5G系统上行同步信道的循环前缀(子帧类型三);
所述数据传输类型包括以下至少之一:
所述数据包括UE自身产生的标识ID,BSR,安全信息包,连接请求;
所述数据包括UE自身产生的标识ID和业务数据包,基站分配的短安全信息包;
所述数据包括UE自身产生的标识ID和业务数据包;
所述数据包括UE自身产生的标识ID,BSR,连接请求。
基站盲检测所述数据,根据所述数据中携带的ID确定所述数据对应的UE,根据该UE剩余业务量大小,当基站解码正确后发送UL Grant和TA指示UE在调度的位置上传输新数据,以及定时调整量,隐含告知UE,基站已经成功解码,还可以分配用户临时标识,用于后续数据的调度传输;或,通过UL Grant仅指示UE发送成功;或者,在所述数据对应的下行反馈信道上反馈ACK/NACK,UE所述下行反馈信道上获取ACK/NACK,确定是否需要重传。
其中,UE定时调整信息可以和所述UL Grant一起通过物理下行控制信道或物理下行共享信道传输给UE,或者,多个UE的定时调整信息一起传输下去,或者,多个UE的定时调整信息和UL Grant一起传输下去;
当传输所述ACK/NACK时,还可以携带冲突解决ID,所述冲突解决ID可以是根据UE ID随机产生,也可以直接使用所述数据中随机ID。
例如:冲突解决ID取值为0,1,2,与所述ACK/NACK联合反馈,2比特指示;
00:NACK;01:ACK且冲突解决ID=0;10:ACK且冲突解决ID=1;11:ACK且冲突解决ID=2;或者,
冲突解决ID取值为0,1,与所述ACK/NACK联合反馈,2比特指示;
00:NACK;01:ACK且冲突解决ID=0;10:ACK且冲突解决ID=1;11:ACK(资源冲突的多个UE全部解码正确);或者,
冲突解决ID取值为0,1,2,3,4,5,6,与所述ACK/NACK联合反馈,3比特指示;
000:NACK;001:ACK且冲突解决ID=0;010:ACK且冲突解决ID=1;011:ACK且冲突解决ID=2;100:ACK且冲突解决ID=3;101:ACK且冲突解决ID=4;110:ACK且冲突解决ID=5;111:ACK且冲突解决ID=6;或者,
冲突解决ID取值为0,1,2,3,4,5,与所述ACK/NACK联合反馈,3比特指示;
000:NACK;001:ACK且冲突解决ID=0;010:ACK且冲突解决ID=1;011:ACK且冲突解决ID=2;100:ACK且冲突解决ID=3;101:ACK且冲突解决ID=4;110:ACK且冲突解决ID=5;111:ACK(资源冲突的多个UE全部解码正确)。
UE根据所述定时调整信息重传数据或传输新数据;
传输所述数据的资源池可以有一个,也可以有多个,如:两个资源池,一个用于收到定时调整后数据传输,一个用于没有定时调整的数据传输;
UE可以根据是否收到定时调整进行资源池选择;
基站可以采用盲检测的方式。
此外,本申请实施例还提供一种计算机可读介质,存储有数据传输程序,该数据传输程序被处理器执行时实现上述的数据传输方法。
本领域内的技术人员应明白,本发明实施例可提供为方法、系统、或计算机程序产品。因此,本申请可采用硬件实施例、软件实施例、或结合软件和硬件方面的实施例的形式。而且,本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器和光学存储器等)上实施的计算机程序产品的形式。
本申请是参照根据本发明实施例的方法、设备(系统)、和计算机程序 产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器,使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中,使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品,该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上,使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理,从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
本领域普通技术人员可以理解,上文中所公开方法中的全部或某些步骤、系统、装置中的功能模块/单元可以被实施为软件、固件、硬件及其适当的组合。在硬件实施方式中,在以上描述中提及的功能模块/单元之间的划分不一定对应于物理组件的划分;例如,一个物理组件可以具有多个功能,或者一个功能或步骤可以由若干物理组件合作执行。某些组件或所有组件可以被实施为由处理器,如数字信号处理器或微处理器执行的软件,或者被实施为硬件,或者被实施为集成电路,如专用集成电路。这样的软件可以分布在计算机可读介质上,计算机可读介质可以包括计算机存储介质(或非暂时性介质)和通信介质(或暂时性介质)。如本领域普通技术人员公知的,术语计算机存储介质包括在用于存储信息(诸如计算机可读指令、数据结构、程序模块或其他数据)的任何方法或技术中实施的易失性和非易失性、可移除和不可移除介质。计算机存储介质包括但不限于RAM、ROM、EEPROM、闪存或其他存储器技术、CD-ROM、数字多功能盘(DVD)或其他光盘存储、磁盒、磁带、磁盘存储或其他磁存储装置、或者可以用于存储期望的信息并且可以被计算机访问的任何其他的介质。此外,本领域普通技术人员公知的是,通 信介质通常包含计算机可读指令、数据结构、程序模块或者诸如载波或其他传输机制之类的调制数据信号中的其他数据,并且可包括任何信息递送介质。
以上所述,仅为本申请的示例性实施例而已,并非用于限定本申请的保护范围。
工业实用性
本申请实施例提供一种数据传输方法及装置,能够更快速地传输数据,减少时延,提升系统资源的使用效率;而且,能够保证在非同步场景下对其他用户数据传输的影响尽量小。

Claims (38)

  1. 一种数据传输方法,包括:
    第一传输节点在n个正交频分复用OFDM符号上传输数据;所述数据包括的比特数量大于1,所述数据编码后映射到所述n个OFDM符号上,n为大于1的整数;
    其中,第一个OFDM符号前包括第一循环前缀;除所述第一个OFDM符号以外的OFDM符号不包括循环前缀或者包括第二循环前缀;所述第一循环前缀的长度大于或等于所述第二循环前缀的长度。
  2. 根据权利要求1所述的数据传输方法,其中,所述第一循环前缀的长度大于所述第一传输节点的时域不同步偏移量。
  3. 根据权利要求1所述的数据传输方法,其中,当第一个OFDM符号前包括第一循环前缀,且所述第一个OFDM符号以外的OFDM符号包括第二循环前缀时,除了第一循环前缀外的一个或多个循环前缀具有如下位置关系:
    不同循环前缀以第一循环前缀为间隔;
    不同循环前缀相邻,第一循环前缀位于第一个OFDM符号上,多个第二循环前缀之间连续且不交叉;
    不同循环前缀相邻,第一循环前缀位于第一个OFDM符号上,多个第二循环前缀之间交叉。
  4. 根据权利要求1所述的数据传输方法,其中,所述n个OFDM符号后还包括保护间隔GP。
  5. 根据权利要求4所述的数据传输方法,其中,一个或多个循环前缀、n个OFDM符号以及GP的时域长度总和为2m的毫秒长度,其中,GP的时域长度大于或等于0,m为整数。
  6. 根据权利要求1所述的数据传输方法,其中,所述n个OFDM符号对应的时域位置由基站通过信令配置。
  7. 根据权利要求1所述的数据传输方法,其中,所述n值基于以下方式 确定:预定义的方式确定、或者基站配置的方式确定、或者根据预定义参数确定,其中,所述预定义参数包括以下至少之一:所述数据的传输块大小、所述数据的类型、系统带宽、所述数据对应的覆盖级别、所述数据对应的重复次数、子载波间隔。
  8. 根据权利要求1所述的数据传输方法,其中,所述第一传输节点在n个OFDM符号上传输数据时,传输所述数据的频域带宽基于以下方式确定:预定义的方式确定、或者基站配置的方式确定、或者根据预定义参数确定,其中,所述预定义参数包括以下至少之一:所述数据的传输块大小、所述数据的类型、系统带宽、所述数据对应的覆盖级别、所述数据对应的重复次数、子载波间隔。
  9. 根据权利要求1所述的数据传输方法,其中,当所述第二循环前缀大于第一阈值时,所述第一循环前缀等于第二循环前缀;当所述第二循环前缀小于第一阈值时,所述第一循环前缀大于第二循环前缀。
  10. 根据权利要求1所述的数据传输方法,其中,当初始接入网络时,所述数据包括以下至少之一:第一传输节点自身携带的专有标识、建立连接请求消息、业务数据包;或者,当接入网络后发送数据时,所述数据包括以下至少之一:第二传输节点分配给所述第一传输节点的标识和业务数据包、第二传输节点分配的短安全信息包。
  11. 根据权利要求1所述的数据传输方法,其中,所述数据的重传、下一个新数据的传输以及数据对应的反馈方式,至少根据缓冲调度请求BSR、数据类型、数据块大小、所述数据对应的时长、所述数据对应的带宽确定。
  12. 根据权利要求11所述的数据传输方法,其中,所述数据的重传、下一个新数据的传输以及数据对应的反馈方式,根据BSR、数据类型、所述数据对应的时长、所述数据对应的带宽确定,包括以下至少之一:
    当BSR的取值S大于阈值S1时,对应的传输方式包括:后续数据传输基于第二传输节点调度的方式;
    当BSR的取值S小于阈值S2时,对应的反馈方式包括:第二传输节点仅反馈确认/否定ACK/NACK消息和随机标识信息中的至少一项,所述随机标识信息是第二传输节点根据所述第一传输节点上报的标识而随机产生,或 者,所述第一传输节点随机产生后携带在所述数据中传输给第二传输节点;
    当所述数据对应的时长取值A大于阈值A1时,对应的传输方式包括:后续数据传输基于第二传输节点调度的方式;
    当所述数据对应的时长取值A小于阈值A2时,对应的反馈方式包括:第二传输节点仅反馈确认/否定ACK/NACK消息和随机标识信息中的至少一项,所述随机标识信息是第二传输节点根据所述第一传输节点上报的标识而随机产生,或者,所述第一传输节点随机产生后携带在所述数据中传输给第二传输节点;
    当所述数据对应的带宽取值B大于阈值B1时,对应的传输方式包括:后续数据传输基于第二传输节点调度的方式;
    当所述数据对应的带宽取值B小于阈值B2时,对应的反馈方式包括:第二传输节点仅反馈确认/否定ACK/NACK消息和随机标识信息中的至少一项,所述随机标识信息是第二传输节点根据所述第一传输节点上报的标识而随机产生,或者,所述第一传输节点随机产生后携带在所述数据中传输给第二传输节点;
    当所述数据类型为第一类型时,对应的传输方式包括:后续数据传输基于第二传输节点调度的方式;
    当所述数据类型为第二类型时,对应的反馈方式包括:第二传输节点仅反馈确认/否定ACK/NACK消息和随机标识信息中的至少一项,所述随机标识信息是第二传输节点根据所述第一传输节点上报的标识而随机产生,或者,所述第一传输节点随机产生后携带在所述数据中传输给第二传输节点。
  13. 根据权利要求1所述的数据传输方法,所述方法还包括:
    所述第一传输节点根据确认/否定ACK/NACK消息和随机标识信息中的至少一项确定是否进行数据重传。
  14. 根据权利要求13所述的数据传输方法,所述方法还包括:
    当所述第一传输节点仅获得NACK消息时,所述第一传输节点再次随机选择资源传输。
  15. 根据权利要求13所述的数据传输方法,所述方法还包括:
    当所述第一传输节点获得时间提前量TA时,所述第一传输节点在第二资源集合中随机选择第二资源传输重传数据或新数据;其中,
    所述第二资源集合为基站配置的用于传输数据的多个第二资源的资源集合,所述第二资源为传输数据的基本单元,所述第二资源的频域带宽和时域长度基于预定义而确定;所述第二资源与基于第二传输节点调度发送数据的资源结构相同。
  16. 根据权利要求13所述的数据传输方法,所述方法还包括:
    当所述第一传输节点获得时间提前量TA和上行授权,或者仅获得上行授权时,所述第一传输节点在所述上行授权指示的资源上发送重传数据和新数据。
  17. 根据权利要求13所述的数据传输方法,所述方法还包括:
    当所述第一传输节点获得随机标识时,如果所述随机标识与目标随机标识一致,则确定传输成功;如果不一致,则确定传输不成功,重新随机选择资源进行数据重传输。
  18. 根据权利要求1所述的数据传输方法,其中,所述第一传输节点根据当前系统中配置信息、预定义规则以及第一传输节点能力信息中的至少之一,确定传输方式;其中,所述预定义规则包括:所述第一传输节点根据传输数据大小或BSR的大小、传输数据对应的时域传输单元、传输数据对应的重复传输、系统配置的专有信息中的至少之一选择传输方式。
  19. 根据权利要求13至18中任一项所述的数据传输方法,其中,传输数据的方式包括以下方式至少之一:
    第一传输节点根据第二传输节点配置免调度传输;第一传输节点根据第二传输节点反馈的ACK/NACK消息,免调度重传或新数据传输;
    第一传输节点根据第二传输节点配置免调度传输;第一传输节点根据第二传输节点反馈的ACK/NACK消息和时间提前量TA,免调度重传或新数据传输;根据第二传输节点反馈的TA,调整后传输数据;
    第一传输节点根据第二传输节点配置免调度传输;第一传输节点根据第二传输节点反馈的上行调度授权UL Grant和TA,基于调度的重传或新数据 传输;
    第一传输节点根据第二传输节点配置免调度传输;第一传输节点根据第二传输节点反馈的UL Grant重传数据或传输新数据。
  20. 一种数据传输装置,包括:
    传输单元,配置为在n个正交频分复用OFDM符号上传输数据;其中,所述数据包括的比特数量大于1,所述数据编码后映射到所述n个OFDM符号上,n为大于1的整数;
    其中,第一个OFDM符号前包括第一循环前缀;除所述第一个OFDM符号以外的OFDM符号不包括循环前缀或者包括第二循环前缀;所述第一循环前缀的长度大于或等于所述第二循环前缀的长度。
  21. 根据权利要求20所述的数据传输装置,其中,所述第一循环前缀的长度大于第一传输节点的时域不同步偏移量。
  22. 根据权利要求20所述的数据传输装置,其中,当第一个OFDM符号前包括第一循环前缀,且所述第一个OFDM符号以外的OFDM符号包括第二循环前缀时,除了第一循环前缀外的一个或多个循环前缀具有如下位置关系:
    不同循环前缀以第一循环前缀为间隔;
    不同循环前缀相邻,第一循环前缀位于第一个OFDM符号上,多个第二循环前缀之间连续且不交叉;
    不同循环前缀相邻,第一循环前缀位于第一个OFDM符号上,多个第二循环前缀之间交叉。
  23. 根据权利要求20所述的数据传输装置,其中,所述n个OFDM符号后还包括保护间隔GP。
  24. 根据权利要求23所述的数据传输装置,其中,一个或多个循环前缀、n个OFDM符号以及GP的时域长度总和为2m的毫秒长度,其中,GP的时域长度大于或等于0,m为整数。
  25. 根据权利要求20所述的数据传输装置,其中,所述n个OFDM符号对应的时域位置由基站通过信令配置。
  26. 根据权利要求20所述的数据传输装置,其中,所述n值基于以下方式确定:预定义的方式确定、或者基站配置的方式确定、或者根据预定义参数确定,其中,所述预定义参数包括以下至少之一:所述数据的传输块大小、所述数据的类型、系统带宽、所述数据对应的覆盖级别、所述数据对应的重复次数、子载波间隔。
  27. 根据权利要求20所述的数据传输装置,其中,在n个OFDM符号上传输数据时,传输所述数据的频域带宽基于以下方式确定:预定义的方式确定、或者基站配置的方式确定、或者根据预定义参数确定,其中,所述预定义参数包括以下至少之一:所述数据的传输块大小、所述数据的类型、系统带宽、所述数据对应的覆盖级别、所述数据对应的重复次数、子载波间隔。
  28. 根据权利要求20所述的数据传输装置,其中,当所述第二循环前缀大于第一阈值时,所述第一循环前缀等于第二循环前缀;当所述第二循环前缀小于第一阈值时,所述第一循环前缀大于第二循环前缀。
  29. 根据权利要求20所述的数据传输装置,其中,当初始接入网络时,所述数据包括以下至少之一:第一传输节点自身携带的专有标识、建立连接请求消息、业务数据包;或者,当接入网络后发送数据时,所述数据包括以下至少之一:第二传输节点分配给所述第一传输节点的标识和业务数据包、第二传输节点分配的短安全信息包。
  30. 根据权利要求29所述的数据传输装置,其中,所述数据的重传、下一个新数据的传输以及数据对应的反馈方式,至少根据缓冲调度请求BSR、数据类型、数据块大小、所述数据对应的时长、所述数据对应的带宽确定。
  31. 根据权利要求30所述的数据传输装置,其中,所述数据的重传、下一个新数据的传输以及数据对应的反馈方式,根据BSR、数据类型、所述数据对应的时长、所述数据对应的带宽确定,包括以下至少之一:
    当BSR的取值S大于阈值S1时,对应的传输方式包括:后续数据传输基于第二传输节点调度的方式;
    当BSR的取值S小于阈值S2时,对应的反馈方式包括:第二传输节点仅反馈确认/否定ACK/NACK消息和随机标识信息中的至少一项,所述随机标识信息是第二传输节点根据所述第一传输节点上报的标识而随机产生,或 者,所述第一传输节点随机产生后携带在所述数据中传输给第二传输节点;
    当所述数据对应的时长取值A大于阈值A1时,对应的传输方式包括:后续数据传输基于第二传输节点调度的方式;
    当所述数据对应的时长取值A小于阈值A2时,对应的反馈方式包括:第二传输节点仅反馈确认/否定ACK/NACK消息和随机标识信息中的至少一项,所述随机标识信息是第二传输节点根据所述第一传输节点上报的标识而随机产生,或者,所述第一传输节点随机产生后携带在所述数据中传输给第二传输节点;
    当所述数据对应的带宽取值B大于阈值B1时,对应的传输方式包括:后续数据传输基于第二传输节点调度的方式;
    当所述数据对应的带宽取值B小于阈值B2时,对应的反馈方式包括:第二传输节点仅反馈确认/否定ACK/NACK消息和随机标识信息中的至少一项,所述随机标识信息是第二传输节点根据所述第一传输节点上报的标识而随机产生,或者,所述第一传输节点随机产生后携带在所述数据中传输给第二传输节点;
    当所述数据类型为第一类型时,对应的传输方式包括:后续数据传输基于第二传输节点调度的方式;
    当所述数据类型为第二类型时,对应的反馈方式包括:第二传输节点仅反馈确认/否定ACK/NACK消息和随机标识信息中的至少一项,所述随机标识信息是第二传输节点根据所述第一传输节点上报的标识而随机产生,或者,所述第一传输节点随机产生后携带在所述数据中传输给第二传输节点。
  32. 根据权利要求20所述的数据传输装置,所述装置还包括:
    处理单元,配置为根据确认/否定ACK/NACK消息和所述随机标识信息中的至少一项确定是否进行数据重传。
  33. 根据权利要求32所述的数据传输装置,其中,所述传输单元,还配置为当所述第一传输节点仅获得NACK消息时,再次随机选择资源传输。
  34. 根据权利要求32所述的数据传输装置,其中,所述传输单元,还配置为当所述第一传输节点获得时间提前量TA时,在第二资源集合中随机选 择第二资源传输重传数据或新数据;其中,所述第二资源集合为基站配置的用于传输数据的多个第二资源的资源集合,所述第二资源为传输数据的基本单元,所述第二资源的频域带宽和时域长度基于预定义而确定;所述第二资源与基于第二传输节点调度发送数据的资源结构相同。
  35. 根据权利要求32所述的数据传输装置,其中,所述传输单元,还配置为当所述第一传输节点获得时间提前量TA和上行授权,或者仅获得上行授权时,在所述上行授权指示的资源上发送重传数据和新数据。
  36. 根据权利要求32所述的数据传输装置,其中,所述处理单元,还配置为当所述第一传输节点获得随机标识时,如果所述随机标识与目标随机标识一致,则确定传输成功;如果不一致,则确定传输不成功,重新随机选择资源进行数据重传输。
  37. 根据权利要求20所述的数据传输装置,其中,所述传输单元还配置为根据当前系统中配置信息、预定义规则以及第一传输节点能力信息中的至少之一,确定传输方式;其中,所述预定义规则包括:所述第一传输节点根据传输数据大小或BSR的大小、传输数据对应的时域传输单元、传输数据对应的重复传输、系统配置的专有信息中的至少之一选择传输方式。
  38. 根据权利要求32至37中任一项所述的数据传输装置,其中,传输数据的方式包括以下方式至少之一:
    第一传输节点根据第二传输节点配置免调度传输;第一传输节点根据第二传输节点反馈的ACK/NACK消息,免调度重传或新数据传输;
    第一传输节点根据第二传输节点配置免调度传输;第一传输节点根据第二传输节点反馈的ACK/NACK消息和时间提前量TA,免调度重传或新数据传输;根据第二传输节点反馈的TA,调整后传输数据;
    第一传输节点根据第二传输节点配置免调度传输;第一传输节点根据第二传输节点反馈的上行调度授权UL Grant和TA,基于调度的重传或新数据传输;
    第一传输节点根据第二传输节点配置免调度传输;第一传输节点根据第二传输节点反馈的UL Grant重传数据或传输新数据。
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