CN-117640007-B - Channel state information feedback method, receiving method, device and communication node

CN117640007BCN 117640007 BCN117640007 BCN 117640007BCN-117640007-B

Abstract

The application provides a channel state information feedback method, a receiving method, a device and a communication node, which comprise the steps of splitting channel state information corresponding to at least one CSI report into C sub-channel state information, and transmitting all or part of the C sub-channel state information in at least two uplink transmission resources. And the plurality of uplink transmission resources meet a preset time sequence relation, and the transmission content on the uplink transmission resources is determined according to the preset time sequence relation. The application can effectively solve the problem that one uplink transmission resource can not effectively transmit at least one channel state information.

Inventors

LU ZHAOHUA
XIAO HUAHUA
LI LUN
LIU WENFENG

Assignees

中兴通讯股份有限公司

Dates

Publication Date: 20260505
Application Date: 20220810

Claims (20)

1. A method for channel state information feedback, the method comprising: Dividing the first channel state information into at least two pieces of sub-channel state information, wherein the at least two pieces of sub-channel state information comprise at least two pieces of second-type precoding information, and the second-type precoding information is non-codebook-based precoding information; Feeding back first sub-channel state information on a first uplink transmission resource, feeding back second sub-channel state information on a second uplink transmission resource, wherein the at least two sub-channel state information comprises the first sub-channel state information and the second sub-channel state information; wherein, the first uplink transmission resource and the first sub-channel state information correspond to a first channel state information report; the second uplink transmission resource and the second sub-channel state information correspond to a second channel state information report; And feeding back the state information of the second sub-channel at the second uplink transmission resource, comprising: The method comprises the steps of feeding back first sub-channel state information on a first time slot, feeding back second sub-channel state information on a second time slot, wherein the second time slot is larger than the first time slot, the second time slot is determined according to the first time slot and a time slot offset t, or the time slot offset t is determined according to the second time slot and the first time slot, or the first time slot is determined according to the second time slot and the time slot offset t, and the time slot offset t is a positive integer.
2. The method of claim 1, wherein the slot offset t is an integer greater than or equal to a first threshold m1 and less than or equal to a second threshold m2, m1 and m2 are positive integers, and m1 is less than m2.
3. The method of claim 2, wherein the first threshold m1 is determined based on the received first indication signaling, based on a contracted manner, based on a first time interval f1 and a carrier spacing, and based on a capability of processing CSI.
4. The method of claim 2, wherein the second threshold m2 is determined based on received second indication signaling, based on a contracted manner, based on a second time interval f2 and a carrier spacing, and based on capability to process CSI.
5. The method of claim 1 wherein the slot offset t is less than a first threshold m1, and wherein the hybrid automatic repeat request HARQ corresponding to the first channel state information report and the second channel state information report have the same HARQ ID.
6. The method of claim 2, wherein the slot offset t is greater than or equal to the first threshold m1, wherein the HARQ corresponding to the first and second channel state information reports have the same HARQ ID, or wherein the HARQ corresponding to the first and second channel state information reports have different HARQ IDs.
7. The method of claim 2 wherein the slot offset t is greater than or equal to a second threshold m2 and wherein a second channel state information report corresponding to the second sub-channel state information is ignored.
8. The method of claim 2, wherein the slot offset t is greater than or equal to a second threshold m2, the method further comprising one of: Receiving a third indication signaling, re-acquiring the first channel state information, wherein the first channel state information is second-type precoding information, and feeding back the first channel state information; receiving a fourth indication signaling, re-acquiring the first channel state information, wherein the first channel state information is first-type precoding information, and feeding back the first channel state information; Receiving a fifth indication signaling, re-acquiring the first sub-channel state information and the second sub-channel state information, and feeding back the first sub-channel state information and the second sub-channel state information; Receiving a sixth indication signaling, re-acquiring the first sub-channel state information, and feeding back the first sub-channel state information; and receiving a seventh indication signaling, re-acquiring the second sub-channel state information, and feeding back the second sub-channel state information.
9. The method of claim 1, wherein the second uplink transmission resource is a PUSCH, and the effective transmission bits of the second uplink transmission resource are greater than the number of bits corresponding to the second subchannel status information.
10. The method of claim 1 wherein the second uplink transmission resource is a PUCCH and the effective transmission bits of the second uplink transmission resource are greater than the number of bits corresponding to the second subchannel status information.
11. The method of claim 1, wherein the second uplink transmission resource is a PUCCH, the PUCCH being reserved bits for transmitting a static HARQ codebook.
12. The method of claim 1 wherein the second uplink transmission resource is a PUCCH, the PUCCH being used to transmit second channel state information, the transmission priority of the second channel state information being reduced to transmit the second sub-channel state information.
13. A method for receiving channel state information, the method comprising: receiving at least two sub-channel state information on at least two uplink transmission resources; Receiving at least two sub-channel state information on at least two uplink transmission resources, comprising: Receiving first sub-channel state information on a first uplink transmission resource, receiving second sub-channel state information on a second uplink transmission resource, wherein the at least two sub-channel state information comprises the first sub-channel state information and the second sub-channel state information, and the at least two sub-channel state information comprises at least two second type precoding information, wherein the second type precoding information is non-codebook-based precoding information; Combining the at least two sub-channel state information into first channel state information; wherein, the first uplink transmission resource and the first sub-channel state information correspond to a first channel state information report; the second uplink transmission resource and the second sub-channel state information correspond to a second channel state information report; Receiving the first sub-channel state information on a first uplink transmission resource, and receiving the second sub-channel state information on a second uplink transmission resource, comprising: the method comprises the steps of receiving first sub-channel state information fed back by a first time slot, receiving second sub-channel state information fed back by a second time slot, wherein the second time slot is larger than the first time slot, the second time slot is determined according to the first time slot and a time slot offset t, or the time slot offset is determined according to the first time slot, or the first time slot is determined according to the second time slot and the time slot offset t, and the time slot offset t is a positive integer.
14. The method of claim 13, wherein the slot offset t is an integer greater than or equal to a first threshold m1 and less than or equal to a second threshold m2, m1 and m2 are positive integers, and m1 is less than m2.
15. The method of claim 14, wherein the first threshold m1 is determined according to a first indication signaling transmitted, according to a agreed manner, according to a first time interval f1 and a carrier spacing, and according to a capability of a terminal to process CSI.
16. The method of claim 14, wherein the second threshold m2 is determined according to a second signaling transmitted, according to a contracted manner, according to a second time interval f2 and a carrier interval, and according to a capability of the terminal to process CSI.
17. The method of claim 14 wherein the slot offset t is less than the first threshold m1, and wherein the hybrid automatic repeat request HARQ corresponding to the first channel state information report and the second channel state information report have the same HARQ ID.
18. The method of claim 14, wherein the slot offset t is greater than or equal to the first threshold m1, wherein the HARQ corresponding to the first and second channel state information reports have the same HARQ ID, or wherein the HARQ corresponding to the first and second channel state information reports have different HARQ IDs.
19. The method of claim 14, wherein the slot offset t is greater than or equal to a second threshold m2, the method further comprising one of: Transmitting a third indication signaling for indicating a terminal to reacquire the first channel state information, wherein the first channel state information is second-type precoding information, and receiving the first channel state information; Transmitting a fourth indication signaling for indicating a terminal to reacquire the first channel state information, wherein the first channel state information is first type precoding information, and receiving the first channel state information; Transmitting a fifth indication signaling for indicating a terminal to reacquire the first sub-channel state information and the second sub-channel state information and receiving the first sub-channel state information and the second sub-channel state information; A sixth indication signaling is sent and used for indicating a terminal to acquire the first sub-channel state information again and receiving the first sub-channel state information; And sending a seventh indication signaling for indicating the terminal to reacquire the second sub-channel state information and receiving the second sub-channel state information.
20. The method of claim 13, wherein the second uplink transmission resource is a PUSCH, and the effective transmission bits of the second uplink transmission resource are greater than the number of bits corresponding to the second subchannel status information.

Description

Channel state information feedback method, receiving method, device and communication node Technical Field The present invention relates to the field of communications technologies, and for example, to a channel state information feedback method, a receiving method, a device, and a communication node. Background Artificial intelligence (ARTIFICIAL INTELLIGENCE, AI)/machine learning (MACHINE LEARNING, ML) has been widely used in various industries, and is widely studied to obtain channel state Information by introducing it into a wireless communication system, wherein one of the main application scenarios is feedback of channel state Information (CHANNEL STATE Information, CSI). In general, CSI feedback is implemented on a self-encoder basis. The self-encoder includes an encoder and a decoder, wherein the encoder is provided at a terminal side and the decoder is provided at a base station side. In CSI feedback, a base station allocates uplink transmission resources for feeding back CSI to a terminal, but the base station does not know how many data streams the terminal needs to transmit when allocating resources, and the number of bits specifically transmitted by each data stream, and possibly, the reason that multiple CSI are transmitted on the same uplink transmission resource, etc., may cause that the uplink transmission resources allocated by the base station cannot effectively transmit CSI. At this time, one solution is to discard part of the CSI bits by the terminal to achieve the transmission purpose. But for AI-based CSI feedback, discarding part of the bits may result in the base station not recovering the compressed channel information well. Another solution is to feed back the CSI through multiple channel state information reports, but how multiple CSI reports feed back the CSI is a problem to be solved. Disclosure of Invention The application provides a channel state information feedback method, a receiving method, a device and a communication node, which can effectively solve the problem that one uplink transmission resource cannot effectively transmit at least one channel state information. In a first aspect, an embodiment of the present application provides a method for feeding back channel state information, where the method includes: Dividing the first channel state information into at least two sub-channel state information; and feeding back the at least two sub-channel state information through at least two uplink transmission resources. In a second aspect, an embodiment of the present application further provides a method for receiving channel state information, where the method includes: receiving at least two sub-channel state information on at least two uplink transmission resources; and combining the at least two sub-channel state information into first channel state information. In a third aspect, the embodiment of the application also provides a channel state information feedback device, which comprises a grouping module and a feedback module, wherein, The grouping module is used for dividing the first channel state information into at least two pieces of sub-channel state information; the feedback module is configured to feed back the at least two sub-channel state information through at least two uplink transmission resources. In a fourth aspect, the embodiment of the application also provides a channel state information receiving device, which comprises a receiving module and a combining module, wherein, The receiving module is configured to receive at least two sub-channel state information on at least two uplink transmission resources; the merging module is configured to merge at least two pieces of sub-channel state information into first channel state information. In a fifth aspect, an embodiment of the present application provides a communication node, including: A storage means for storing one or more programs; The one or more programs, when executed by the one or more processors, cause the one or more processors to implement the methods of the first and second aspects of the present application. In a sixth aspect, embodiments of the present application provide a storage medium storing a computer program which, when executed by a processor, implements any of the methods of the embodiments of the present application. With respect to the above embodiments and other aspects of the application and implementations thereof, further description is provided in the accompanying drawings, detailed description and claims. Drawings Fig. 1 is a schematic flow chart of a channel state information feedback method according to an embodiment of the present application; fig. 2 is a schematic diagram of a second flow chart of a channel state information feedback method according to an embodiment of the present application; fig. 3 is a third flow chart of a channel state information feedback method according to an embodiment of the present application; fig. 4 is a schematic structural diagram