CN-122002583-A - Communication method and device

Abstract

A communication method and device can be applied to the satellite communication field, such as NTN. The method comprises the steps that a terminal device receives downlink control information, the downlink control information is used for indicating scheduling delay parameters K, K is a positive integer, the terminal device starts to send first data from a first time unit, the first time unit is the Kth, or the Kth+ Koffset, or the Kth+ Koffset-G uplink time units after a time unit n, wherein the time unit n is later than the time unit used for bearing the downlink control information, koffset is the number of predefined or preconfigured time units, n and Koffset are both positive integers, and G is the number of time units of a protection band in one frame period. By the technical scheme provided by the application, flexible scheduling can be realized.

Inventors

• CHEN YING
• SHI PENGCHENG
• ZHANG JIAYIN

Assignees

• 华为技术有限公司

Dates

Publication Date

20260508

Application Date

20241108

Claims (20)

1. 1. A method of communication, comprising: the terminal device receives downlink control information, wherein the downlink control information is used for indicating a scheduling delay parameter K, and the K is a positive integer; The terminal device starts to send first data from a first time unit, wherein the first time unit is the Kth, or the Kth+ Koffset, or the Kth+ Koffset-G uplink time unit after a time unit n; Wherein the time unit n is later than the time unit used for carrying the downlink control information, koffset is a predefined or preconfigured number of time units, n and Koffset are both positive integers, and G is a number of time units of a guard band in one frame period.
2. 2. A method of communication, comprising: The network device sends downlink control information, wherein the downlink control information is used for indicating a scheduling delay parameter K, and the K is a positive integer; The network device receives first data from a first time unit, wherein the first time unit is a Kth, or Kth+ Koffset, or Kth+ Koffset-G uplink time units after a time unit n; Wherein the time unit n is later than the time unit used for carrying the downlink control information, koffset is a predefined or preconfigured number of time units, n and Koffset are both positive integers, and G is a number of time units of a guard band in one frame period.
3. 3. The method according to claim 1 or 2, wherein the time unit n is later than a time unit used for carrying the downlink control information, comprising: the time unit n is not earlier than the last downlink time unit in the current frame period, and the current frame period is a frame period for bearing the downlink control information; the frame period sequentially comprises a downlink time unit, a guard band time unit and an uplink time unit.
4. 4. A method according to claim 3, wherein the time unit n is not earlier than the last downlink time unit in the current frame period, comprising: The time unit n is the first uplink time unit in the current frame period.
5. 5. A method according to claim 3, wherein the time unit n is not earlier than the last downlink time unit in the current frame period, comprising: The time unit n is the last guard band time unit in the current frame period.
6. 6. A method according to claim 3, wherein the time unit n is not earlier than the last downlink time unit in the current frame period, comprising: The time unit n is the last downlink time unit in the current frame period.
7. 7. A method according to claim 3, wherein the time unit n is not earlier than the last downlink time unit in the current frame period, comprising: The time unit n is the first guard band time unit in the current frame period.
8. 8. The method according to any of claims 1 to 7, wherein the time unit is any one of a subframe, a slot, a minislot or a symbol.
9. 9. A communication device, comprising: The receiving and transmitting unit is used for receiving downlink control information, wherein the downlink control information is used for indicating a scheduling delay parameter K, and the K is a positive integer; The transceiver unit is further configured to transmit first data from a first time unit, where the first time unit is a kth, or a k+ Koffset, or a k+ Koffset-G uplink time unit after the time unit n; Wherein the time unit n is later than the time unit used for carrying the downlink control information, koffset is a predefined or preconfigured number of time units, n and Koffset are both positive integers, and G is a number of time units of a guard band in one frame period.
10. 10. A communication device, comprising: the receiving and transmitting unit is used for transmitting downlink control information, wherein the downlink control information is used for indicating a scheduling delay parameter K, and the K is a positive integer; The transceiver unit is further configured to receive first data from a first time unit, where the first time unit is a kth, or a k+ Koffset, or a k+ Koffset-G uplink time unit after the time unit n; Wherein the time unit n is later than the time unit used for carrying the downlink control information, koffset is a predefined or preconfigured number of time units, n and Koffset are both positive integers, and G is a number of time units of a guard band in one frame period.
11. 11. The apparatus according to claim 9 or 10, wherein the time unit n is later than a time unit for carrying the downlink control information, comprising: the time unit n is not earlier than the last downlink time unit in the current frame period, and the current frame period is a frame period for bearing the downlink control information; the frame period sequentially comprises a downlink time unit, a guard band time unit and an uplink time unit.
12. 12. The apparatus of claim 11, wherein the time unit n is not earlier than the last downlink time unit in the current frame period, comprising: The time unit n is the first uplink time unit in the current frame period.
13. 13. The apparatus of claim 11, wherein the time unit n is not earlier than the last downlink time unit in the current frame period, comprising: The time unit n is the last guard band time unit in the current frame period.
14. 14. The apparatus of claim 11, wherein the time unit n is not earlier than the last downlink time unit in the current frame period, comprising: The time unit n is the last downlink time unit in the current frame period.
15. 15. The apparatus of claim 11, wherein the time unit n is not earlier than the last downlink time unit in the current frame period, comprising: The time unit n is the first guard band time unit in the current frame period.
16. 16. The apparatus according to any one of claims 9 to 15, wherein the time unit is any one of a subframe, a slot, a minislot or a symbol.
17. 17. A communications device comprising a processor for executing a computer program or instructions which when executed by the processor cause the method of any one of claims 1 to 8 to be carried out.
18. 18. A computer readable storage medium, characterized in that the computer readable storage medium has stored therein a computer program or instructions, which when executed, cause the method of any of claims 1 to 8 to be implemented.
19. 19. A computer program product comprising a computer program or instructions which, when executed, cause the method of any one of claims 1 to 8 to be carried out.
20. 20. A chip comprising a processor for calling from a memory and executing a computer program or instructions stored in the memory, such that the method of any of claims 1 to 8 is implemented.

Description

Communication method and device Technical Field The present application relates to the field of communications technologies, and in particular, to a communications method and apparatus. Background With the development of information technology, more urgent demands are placed on the efficiency, mobility, diversity and the like of communication. Currently, non-terrestrial networks (non-TERRESTRIAL NETWORK, NTN), such as satellite communications, play an irreplaceable role in some important fields, such as space communications, aeronautical communications, maritime communications, military communications, etc. Compared with a ground network, the non-ground network can realize wide area and even global coverage by using high, medium and low orbit satellites, and can provide indiscriminate communication services for global users. The non-ground network communication system and the ground network communication system can be mutually integrated to make up for the advantages and the disadvantages, so as to jointly form a global seamless-coverage sea, land, air and sky integrated comprehensive communication network, thereby meeting various service demands of users and being an important direction for future communication development. The frame structure related to the non-ground network is different from the frame structure used in the existing standard, and how to implement flexible scheduling under the new frame structure is a technical problem to be solved. Disclosure of Invention The application provides a communication method and a communication device, which can realize flexible scheduling. In a first aspect, the present application provides a communication method, which may be applied to a terminal device, where the terminal device may be a terminal as a final product (final product), may be a component (component) or a module (module) having a terminal function, may be a circuit or a chip (such as a modem) chip, also called a baseband (baseband) chip, or a system on chip (SoC) chip or a system-in-a-chip (SYSTEMIN PACKAGE) chip, a system on chip or a processor) that is capable of being applied to a circuit or a chip (such as a modem) chip) in the terminal and that is responsible for a communication function, or may be a logic node, a logic module or software that is capable of implementing all or part of the terminal function. The method comprises the following steps: The terminal device receives downlink control information, wherein the downlink control information is used for indicating a scheduling delay parameter K, K is a positive integer, the terminal device starts to send first data from a first time unit, the first time unit is the Kth, or the Kth+ Koffset, or the Kth+ Koffset-G uplink time units after a time unit n, the time unit n is later than the time unit used for bearing the downlink control information, koffset is the number of predefined or preconfigured time units, n and Koffset are both positive integers, and G is the number of time units of a protection belt in one frame period. Wherein the first time unit may be understood as a starting point of a time domain resource for transmitting the first data. Taking uplink scheduling as an example, the first data may be uplink data, and the first time unit may also be understood as a starting point of the uplink data to be scheduled, or a starting position of the terminal device for sending the uplink data, or a starting position of the network device for receiving the uplink data. Time unit n may also be referred to as a scheduling delay starting point. Time unit n is later than the time unit used to carry the downlink control information, that is, time unit n is the time unit after the time unit used to carry the downlink control information. The time unit used for carrying the downlink control information may be the last time unit of the time domain resource used for carrying the downlink control information, or referred to as the end time unit of the downlink control information. The downlink control information is sent through a physical downlink control channel (physical downlink control channel, PDCCH), and optionally, the time unit used for carrying the downlink control information may also be an end time unit of the PDCCH. The first time unit is a time unit after time unit n. The number of uplink time units between the first time unit and the time unit n is related to the scheduling delay parameter K, and the terminal device may determine the first time unit according to the time unit n and the scheduling delay parameter K. Optionally, the first time unit is a kth, or a k+ Koffset, or a k+ Koffset-G upstream time unit immediately after time unit n. By the method, the time unit n is taken as a scheduling delay starting point, the Kth, or Kth+ Koffset, or Kth+ Koffset-G uplink time units after the time unit n are taken as scheduling uplink data starting points, and downlink resources and guard band resources in a frame period are not counted