Transmission Method, Network Device, And Terminal

• US 20190327719A1
• Filed: 06/14/2019
• Published: 10/24/2019
• Est. Priority Date: 06/16/2017
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: LIU, Jianqin, ZHANG, Di
• Granted Patent: US 11,184,887 B2
• Time in Patent Office: Days
• CPC Class Codes: H04B 7/0617 for beam forming
• CPC Class Codes: H04B 7/0619 using feedback from receiving side feedback signaling for adaptive modulation/coding H04L1/0001
• CPC Class Codes: H04B 7/0626 Channel coefficients, e.g. channel state information [CSI]
• CPC Class Codes: H04B 7/063 Parameters other than those covered in groups H04B7/0623 - H04B7/0634, e.g. channel matrix rank or transmit mode selection
• CPC Class Codes: H04B 7/0639 Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/0051 of dedicated pilots, i.e. pilots destined for a single user or terminal
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0094 Indication of how sub-channels of the path are allocated
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 56/001 Synchronization between nodes
• CPC Class Codes: H04W 72/046 the resource being in the space domain, e.g. beams
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

This application provides a transmission method, a network device, and a terminal, to save resources. The method includes: determining, by a network device, downlink control information DCI, wherein the DCI includes a first request field, information in the first request field is only used to instruct to send a first reference signal on a first resource, or the information in the first request field is used to instruct to send the first reference signal on the first resource and instruct a terminal to report a measurement result of the first reference signal on the first resource, and the measurement result includes channel state information CSI and/or beam state information BSI; and sending, by the network device, the DCI to the terminal.

Claims

1. A transmission method, the transmission method comprising:

receiving, by a terminal device, a resource configuration of a reference signal from a network device;

receiving, by the terminal device, a report configuration of the reference signal from the network device;

receiving, by the terminal device, downlink control information (DCI) from the network device, wherein the DCI comprises a request field, wherein the request field is used to trigger sending the reference signal from the network device to the terminal device, and trigger the terminal device to report a measurement result of the reference signal to the network device, and wherein the measurement result comprises beam state information (BSI) and at least one of a precoding matrix index (PMI), rank index (RI), or channel quality index (CQI);

receiving, by the terminal device, the reference signal; and

reporting, by the terminal device and to the network device, the measurement result based on the DCI and the reference signal.

2. The method according to claim 1, wherein the request field is a channel state information (CSI) request field.

3. The method according to claim 1, wherein the BSI comprises reference signal received power (RSRP) of the reference signal.

4. The method according to claim 1, wherein the DCI satisfies a format that is used for uplink data transmission.

5. The method according to claim 1, wherein the resource configuration includes information of a first resource, and wherein the first resource is a first reference signal resource set in one or more first reference signal resource sets.

6. The method according to claim 1, wherein the method further comprises:

receiving, by the terminal device, power information from the network device; and

determining, by the terminal device, transmit power of the reference signal based on the power information.

7. The method according to claim 6, wherein the power information is used to indicate a power ratio of the reference signal to another reference signal.

8. The method according to claim 7, wherein the reference signal is a channel state information reference signal (CSI-RS), and wherein the another reference signal is a secondary synchronization signal (SSS).

9. The method according to claim 1, wherein the value of the request field is one of:

001, 010, 011, 100, 101, 110 or 111.

10. A terminal device, the terminal device comprising:

a transceiver; and

at least one processor connected to the transceiver;

wherein

the transceiver is configured to;

receive a resource configuration of a reference signal from a network device;

receive a report configuration of the reference signal from the network device;

receive downlink control information (DCI) from the network device, wherein the DCI comprises a request field, wherein the request field is used to trigger sending the reference signal from the network device to the terminal device, and trigger the terminal device to report a measurement result of the reference signal to the network device, and wherein the measurement result comprises beam state information (BSI) and at least one of a precoding matrix index (PMI), rank index (RI) or channel quality index (CQI);

receive the reference signal; and

report the measurement result to the network device based on the DCI and the reference signal.

11. The terminal device according to claim 10, wherein the request field is a channel state information (CSI) request field.

12. The terminal device according to claim 10, wherein the BSI comprises reference signal received power (RSRP) of the reference signal.

13. The terminal device according to claim 10, wherein the DCI satisfies a format that is used for uplink data transmission.

14. The terminal device according to claim 10, wherein the resource configuration includes information of a first resource, and wherein the first resource is a first reference signal resource set in one or more first reference signal resource sets.

15. The terminal device according to claim 10, wherein the transceiver is configured to:

receive power information from the network device; and

wherein the at least one processor is configured to determine transmit power of the reference signal based on the power information.

16. The terminal device according to claim 15, wherein the power information is used to indicate a power ratio of the reference signal to another reference signal.

17. The terminal device according to claim 16, wherein the reference signal is a channel state information reference signal (CSI-RS), and wherein the another reference signal is a secondary synchronization signal (SSS).

18. The terminal device according to claim 10, wherein the value of the request field is one of:

001, 010, 011, 100, 101, 110 or 111.

19. An apparatus, the apparatus comprising at least one processor and an interface, wherein the at least one processor is configured to execute an instruction in a memory, and wherein the instruction, when executed by the at least one processor, causes the apparatus to:

receive a resource configuration of a reference signal from a network device;

receive a report configuration of the reference signal from the network device; and

receive downlink control information (DCI) from the network device, wherein the DCI comprises a request field, wherein the request field is used to trigger sending the reference signal from the network device to the apparatus, and trigger the apparatus to report a measurement result of the reference signal to the network device, and wherein the measurement result comprises beam state information (BSI) and at least one of a precoding matrix index (PMI), rank index (RI), or channel quality index (CQI);

receive the reference signal; and

report the measurement result to the network device based on the DCI and the reference signal.

20. The apparatus according to claim 19, wherein the request field is a channel state information (CSI) request field.

21. The apparatus according to claim 19, wherein the BSI comprises reference signal received power (RSRP) of the reference signal.

22. The apparatus according to claim 19, wherein the DCI satisfies a format that is used for uplink data transmission.

23. The apparatus according to claim 19, wherein the resource configuration includes information of a first resource, and wherein the first resource is a first reference signal resource set in one or more first reference signal resource sets.

24. The apparatus according to claim 19, wherein the instructions, when executed by the at least one processor, further causes the apparatus to:

receive power information from the network device; and

determine transmit power of the reference signal based on the power information.

25. The apparatus according to claim 24, wherein the power information is used to indicate a power ratio of the reference signal to another reference signal.

26. The apparatus according to claim 25, wherein the reference signal is a channel state information reference signal (CSI-RS), and wherein the another reference signal is a secondary synchronization signal (SSS).

27. A non-transitory computer readable storage medium, the non-transitory computer readable storage medium comprising a computer program, wherein the computer program, when running on a computer, causes the computer to:

receive a resource configuration of a reference signal from a network device;

receive a report configuration of the reference signal from the network device;

receive downlink control information (DCI) from the network device, wherein the DCI comprises a request field, wherein the request field is used to trigger sending the reference signal from the network device to the computer, and trigger the computer to report a measurement result of the reference signal to the network device, and wherein the measurement result comprises beam state information (BSI) and at least one of a precoding matrix index (PMI), rank index (RI), or channel quality index (CQI);

receive the reference signal; and

report the measurement result to the network device based on the DCI and the reference signal.

28. The non-transitory computer readable storage medium according to claim 27, wherein the request field is a channel state information (CSI) request field.

29. The non-transitory computer readable storage medium according to claim 27, wherein the BSI comprises reference signal received power (RSRP) of the reference signal.

30. The non-transitory computer readable storage medium according to claim 27, wherein the resource configuration includes information of a first resource, and wherein the first resource is a first reference signal resource set in one or more first reference signal resource sets.