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EP-3370466-B1 - COMMUNICATION METHOD, TERMINAL EQUIPMENT, AND NETWORK EQUIPMENT

EP3370466B1EP 3370466 B1EP3370466 B1EP 3370466B1EP-3370466-B1

Inventors

  • FENG, BIN

Dates

Publication Date
20260506
Application Date
20160205

Claims (15)

  1. A communication method, performed by a terminal, comprising: determining (203) a first data transmission format, the first data transmission format being used in generating a first transmission version of uplink, UL, data; selecting (204) a first data transmission resource from a data resource pool, the first data transmission resource being configured to transmit the first transmission version; sending (206) a first scheduling assignment message to network equipment, the first scheduling assignment message containing information of the first data transmission resource and information of the first data transmission format; coding and modulating the UL data according to the first data transmission format to generate the first transmission version (207); and sending (208) the first transmission version to the network equipment through the first data transmission resource, wherein the data resource pool is configured by the network equipment.
  2. The method as claimed in claim 1, wherein the method further comprises: sending a UL resource scheduling request to the network equipment, wherein the UL resource scheduling request is configured to request the network equipment to allocate a UL resource to the UL data and the resource scheduling request comprises information about an association relationship indicating that the resource scheduling request is associated with the first transmission version, or the first scheduling assignment message is further configured to request the network equipment to allocate the UL resource to the UL data and the scheduling assignment message comprises the information about an association relationship indicating that the scheduling assignment message is associated with the first transmission version; and responsive to reception of a UL resource allocation response sent by the network equipment, generating and sending a second transmission version of the UL data according to a second data transmission format and second data transmission resource indicated in the UL resource allocation response.
  3. The method as claimed in claim 1 or 2, further comprising: responsive to reception of a NACK message sent by the network equipment for the first transmission version of the UL data, determining a third data transmission format and selecting a third data transmission resource from the data resource pool, the third data transmission format being used in generating a third transmission version of the UL data and the third data transmission resource being configured to transmit the third transmission version; sending a second scheduling assignment message to the network equipment, the second scheduling assignment message containing information of the third data transmission resource and information of the third data transmission format; coding and modulating the UL data according to the third data transmission format to generate the third transmission version; and sending the third transmission version to the network equipment through the third data transmission resource to enable the network equipment to receive, demodulate and decode the third transmission version according to the second scheduling assignment message.
  4. The method as claimed in any one of claims 1-3, wherein determining the first data transmission format comprises: determining the first data transmission format used in generating each of the N first transmission versions, N being an integer equal to or greater than 2; determining the first data transmission resource from the data resource pool comprises: determining N first data transmission resources from the data resource pool, each of the N first data transmission resources being configured to transmit the first transmission version of the N first transmission versions corresponding to the first data transmission resource, wherein there are one to one correspondences between the N first data transmission resources and the N first transmission versions; sending the first scheduling assignment message to the network equipment comprises: sending the first scheduling assignment message to the network equipment, the first scheduling assignment message indicating the first data transmission resource and first data transmission format corresponding to each of the N first transmission versions; generating the first transmission version comprises: generating each first transmission version according to the first data transmission format used in generating the first transmission version; and sending the first transmission version to the network equipment comprises: sending the N first transmission versions of the UL data through the N first data transmission resources respectively. wherein sending the first scheduling assignment message to the network equipment comprises: sending N first scheduling assignment messages to the network equipment, wherein there are one to one correspondences between the N first scheduling assignment messages and the N first transmission versions, and each first scheduling assignment message is configured to indicate the first data transmission format and first data transmission resource for the first transmission version corresponding to the first scheduling assignment message; or sending the first scheduling assignment message to the network equipment comprises: sending one first scheduling assignment message to the network equipment, wherein the one first scheduling assignment message indicates the first data transmission formats and first data transmission resources for the N first transmission versions.
  5. The method as claimed in any one of claims 1-4, wherein sending the first scheduling assignment message to the network equipment comprises: sending the first scheduling assignment message to the network equipment through a transmission resource which is configured by the network equipment for the first scheduling assignment message; or selecting a control transmission resource from a control resource pool, and sending the first scheduling assignment message to the network equipment through the control transmission resource, wherein before selecting the first data transmission resource from the data resource pool, the method further comprises: receiving resource pool configuration information sent by the network equipment, the resource pool configuration information comprising configuration information of the data resource pool and configuration information of the control resource pool, wherein the data resource pool comprises the UL resource that is selectable for transmitting the first transmission version, and the control resource pool comprises a UL resource that is selectable for transmitting the scheduling assignment message.
  6. The method as claimed in any one of claims 1-5, wherein the first data transmission format comprises a coded version.
  7. A communication method, performed by network equipment, comprising: configuring a data resource pool to the terminal equipment, the data resource pool comprising a UL resource that is selectable by the terminal equipment for transmitting a first transmission version of uplink, UL data sent by the terminal equipment; and receiving (206) a scheduling assignment message sent by terminal equipment, the scheduling assignment message indicating a first data transmission format and first data transmission resource corresponding to the first transmission version; and receiving, demodulating and decoding (210) the first transmission version of the UL data according to the first data transmission format and the first data transmission resource.
  8. The method as claimed in claim 7, before receiving the scheduling assignment message sent by the terminal equipment, further comprising: configuring a control resource pool for the terminal equipment, the control resource pool comprising a UL resource that is selectable by the terminal equipment for transmitting the scheduling assignment message, or configuring the UL resource for the terminal equipment to transmit the scheduling assignment message.
  9. The method as claimed in claim 7 or 8, further comprising: receiving a UL resource scheduling request sent by the terminal equipment, wherein the UL resource scheduling request is configured to request a network equipment to allocate a UL resource to the UL data and the resource scheduling request comprises information about an association relationship indicating that the resource scheduling request is associated with the first transmission version, or the scheduling assignment message is further configured to request the network equipment to allocate the UL resource to the UL data and the scheduling assignment message comprises the information about an association relationship indicating that the scheduling assignment message is associated with the first transmission version; responsive to the condition that the first transmission version is not received or the first transmission version is failed to be demodulated or decoded, allocating a second data transmission resource to the UL data and determining a second data transmission format; and sending a UL resource allocation response to the terminal equipment, wherein the UL resource allocation response indicates the second data transmission resource and the second data transmission format to enable the terminal equipment to generate a second transmission version of the terminal equipment according to the second data transmission resource and the second data transmission format, wherein the method further comprises: responsive to successful decoding of the first transmission version of the UL data, sending an Acknowledge, ACK, message to the terminal equipment, and neglecting the UL resource scheduling request.
  10. The method as claimed in claim 7 or 8, further comprising: responsive to the condition that the first transmission version is not received or the first transmission version is failed to be demodulated or decoded, sending a Non-Acknowledge, NACK, message to the terminal equipment.
  11. The method as claimed in any one of claims 7-10, wherein a first scheduling assignment message indicates a first data transmission format and first data transmission resource corresponding to each of N first transmission versions of the UL data sent by the terminal equipment, N being an integer equal to or greater than 2; and receiving, demodulating and decoding the first transmission version comprises: receiving, demodulating and decoding the N first transmission versions according to the first data transmission format and first data transmission resource corresponding to each of the N first transmission versions, wherein receiving, demodulating and decoding the first transmission version of the UL data comprises: decoding each first transmission version independently or jointly decoding the N first transmission versions, wherein the method further comprises: if each first transmission version is decoded independently and at least one of the N first transmission versions is successfully decoded, sending the ACK message to the terminal equipment; and if each first transmission version is decoded independently and none of the N first transmission versions is successfully decoded, sending a NACK message or a UL resource allocation message to the terminal equipment, the NACK message comprising information of the first transmission versions which are failed to be decoded to enable the terminal equipment to learn about the first transmission versions which are failed to be decoded, wherein the UL resource allocation message indicates the second data transmission resources and second data transmission formats determined for the terminal equipment to enable the terminal equipment to generate the second transmission version of the terminal equipment according to the second data transmission resources and the second data transmission formats, or wherein the method further comprises: if the N first coded versions are jointly decoded and joint decoding succeeds, sending the ACK message to the terminal equipment; or if the N first coded versions are jointly decoded and joint decoding fails, sending the NACK message or the UL resource allocation message to the terminal equipment, the NACK message comprising the information of the first transmission versions which are failed to be decoded to enable the terminal equipment to learn about the first transmission versions which are failed to be decoded, wherein the UL resource allocation message indicates the second data transmission resources and second data transmission formats determined for the terminal equipment to enable the terminal equipment to generate the second transmission version of the terminal equipment according to the second data transmission resources and the second data transmission formats.
  12. The method as claimed in claim 11, wherein receiving the scheduling assignment message sent by the terminal equipment comprises: receiving N first scheduling assignment messages sent by the terminal equipment, wherein there are one to one correspondences between the N first scheduling assignment messages and the N first transmission versions, and each first scheduling assignment message indicates the first data transmission format and first data transmission resource for the first transmission version corresponding to the first scheduling assignment message; or receiving one first scheduling assignment message sent by the terminal equipment, wherein the one first scheduling assignment message indicates the first data transmission formats and first data transmission resources for the N first transmission versions.
  13. The method as claimed in any one of claims 7-12, wherein receiving the scheduling assignment message sent by the terminal equipment comprises: performing blind detection on the scheduling assignment message sent by the terminal equipment through a resource indicated by the control resource pool; or receiving the scheduling assignment message sent by the terminal equipment through a control resource configured for the scheduling assignment message of the terminal equipment.
  14. The method as claimed in any one of claims 7-13, wherein the first data transmission format comprises a coded version.
  15. A terminal equipment, comprising a determination unit (610), a sending unit (630) and a generation unit (620), wherein the determination unit (610) is configured to determine a first data transmission format, the first data transmission format being used in generating a first transmission version of uplink, UL, data, and select a first data transmission resource from a data resource pool, the first data transmission resource being configured to transmit the first transmission version; the sending unit (630) is configured to send a first scheduling assignment message to a network equipment, the first scheduling assignment message containing information of the first data transmission resource and information of the first data transmission format; the generation unit (620) is configured to code and modulate the UL data according to the first data transmission format to generate the first transmission version; and the sending unit (630) is further configured to send the first transmission version to the network equipment through the first data transmission resource, wherein the data resource pool is configured by the network equipment.

Description

TECHNICAL FIELD The disclosure relates to the field of communications, and more particularly, to a communication method performed by a terminal, a communication method performed by network equipment, and the terminal. Related technologies can be found in WO 2015/160197 A1 and US2014/254544 A1. BACKGROUND A 5th-Generation (5G) communication technology has increasing requirements on low latency and high reliability of communication. At present, a latency is mainly reduced by adopting a shortened Transmission Time Interval (TTI) technology, namely modifying an existing frame structure and reducing an inter-subframe spacing to shorten a signaling feedback and scheduling period, shorten a round trip latency of a system and speed up the rhythm of data transmission and reception. An inter-subframe spacing of an existing Long Term Evolution (LTE) system is 1ms (including 14 Orthogonal Frequency Division Multiplexing (OFDM) symbols), and the shortened TTI technology is intended to shorten the inter-subframe spacing to be 0.2-0.5ms (including 3-7 OFDM symbols). However, even though a shortened TTI is adopted to shorten the sub-interface spacing from 1ms to 0.2-0.5ms, the scheduling period may still be shortened by about 2-4ms only, and the latency is still very long. Therefore, there is an urgent need for a technical solution capable of reducing communication latency without reducing communication reliability. SUMMARY The invention is set out in the appended set of claims. Any embodiment in the description that does not fall within the scope of the claims shall be regarded as an example for understanding the present invention. Embodiments of the disclosure provide a communication method, terminal equipment and network equipment, which may reduce communication latency without reducing communication reliability. Therefore, in the embodiments of the disclosure, the terminal equipment independently determines the data transmission format and independently selects the data transmission resource from the data resource pool to generate and transmit the transmission version of the UL data, and sends the scheduling assignment message to the network equipment to indicate the data transmission resource and data transmission format adopted to send the UL data. A scheduling-free data transmission manner is implemented, a three-step flow including that "the terminal equipment reports the resource scheduling request", "the network equipment schedules the UL transmission resource to the terminal equipment" and "the terminal equipment sends the UL data" is avoided, and a latency may be shortened under the condition of not reducing transmission reliability. BRIEF DESCRIPTION OF DRAWINGS In order to describe the technical solutions of the embodiments of the disclosure more clearly, the drawings required to be used in descriptions about the embodiments or a conventional art will be simply introduced below. It is apparent that the drawings described below are only some embodiments of the disclosure. Other drawings may further be obtained by those of ordinary skilled in the art according to these drawings without creative work. FIG. 1 is a diagram of an application scenario according to an embodiment of the disclosure.FIG. 2 is a schematic flowchart of a communication method according to an embodiment of the disclosure.FIG. 3 is a schematic diagram of a communication method according to an embodiment of the disclosure.FIG. 4 is a schematic flowchart of a communication method according to an embodiment of the disclosure.FIG. 5 is a schematic diagram of a communication method according to an embodiment of the disclosure.FIG. 6 is a schematic diagram of a communication method according to an embodiment of the disclosure.FIG. 7 is a schematic diagram of a communication method according to an embodiment of the disclosure.FIG. 8 is a schematic diagram of a communication method according to an embodiment of the disclosure.FIG. 9 is a schematic flowchart of a communication method according to an embodiment of the disclosure.FIG. 10 is a schematic flowchart of a communication method according to an embodiment of the disclosure.FIG. 11 is a schematic flowchart of a communication method according to an embodiment of the disclosure.FIG. 12 is a schematic flowchart of a communication method according to an embodiment of the disclosure.FIG. 13 is a schematic block diagram of a terminal equipment according to an embodiment of the disclosure.FIG. 14 is a schematic block diagram of a network equipment according to an embodiment of the disclosure.FIG. 15 is a schematic block diagram of a network equipment according to an embodiment of the disclosure.FIG. 16 is a schematic block diagram of a terminal equipment according to an embodiment of the disclosure.FIG. 17 is a schematic block diagram of a terminal equipment according to an embodiment of the disclosure.FIG. 18 is a schematic block diagram of a network equipment according to an embodiment of the disclo