Granted Patent B2

US 12,732,321 · App. 17/922,525 · Granted Sep 8, 2026

Inventors: Meng Mei (Shenzhen, CN); Zhaohua Lu (Shenzhen, CN); Chuangxin Jiang (Shenzhen, CN); Bo Gao (Shenzhen, CN); Shujuan Zhang (Shenzhen, CN); Ke Yao (Shenzhen, CN)

Assignee: ZTE CORPORATION

H04L5/0051H04B7/024H04B7/06968

Abstract

Claims (61)

1 . An information indication method, applied to a serving node, comprising:

determining a correspondence between a target antenna port and X antenna ports, wherein X is an integer greater than 1, the target antenna port comprises a target reference signal port, channel information of the target reference signal port comprises quasi-co-location parameters, the X antenna ports comprise X reference signal ports, and the X reference signal ports correspond to X reference signal resources; and

sending indication information to a terminal according to the correspondence, wherein the indication information is used for indicating that channel information of the target antenna port is obtained by combining channel information of the X antenna ports comprising that the indication information is used for indicating that the quasi-co-location parameters of the target reference signal port are obtained according to the X reference signal resources;

wherein that the indication information is used for indicating that the quasi-co-location parameters of the target reference signal port are obtained according to the X reference signal resources comprises:

the indication information is used for indicating that quasi-co-location parameters of a first channel corresponding to the target reference signal port are obtained according to quasi-co-location parameters of a second channel corresponding to the X reference signal resources;

wherein the second channel satisfies one of that:

the second channel comprises a combined channel of X channels corresponding to the X reference signal resources; or

the second channel comprises a weighted combined channel of X channels corresponding to the X reference signal resources;

wherein the second channel comprises the weighted combined channel of the X channels corresponding to the X reference signal resources, the weighted combined channel is obtained by multiplying each of the X channels by a respective weight factor to obtain X weighted channels and combining the X weighted channels, and the indication information is further used for indicating that the second channel is obtained by weighting and combining a receiving power of each of the X reference signal resources;

wherein the respective weight factor corresponding to each of the X channels is determined according to at least one of following information:

first signaling, wherein the first signaling comprises the respective weight factor corresponding to each of the X channels, wherein the first signaling comprises at least one of: radio resource control (RRC) signaling; medium access control layer control element (MAC CE) signaling; or downlink control information (DCI) signaling;

a sending power ratio of the X channels corresponding to the X reference signal resources;

a sending power ratio of each of the X reference signal resources to a predetermined reference signal resource; or

a sending power of each of the X reference signal resources;

wherein in a Single Frequency Network (SFN) scenario, the target reference signal port comprises at least one demodulation reference signal (DMRS) port, and the X reference signal ports corresponding to at least two tracking reference signal (TRS) ports; and

wherein the first signaling comprises a plurality of bits, each of the plurality of bits corresponds to a weight factor of the X channels, and the weight factor is associated with a number of antenna ports corresponding to the X reference signal ports or a bit size of the first signaling.

2 . The method of claim 1 , wherein the quasi-co-location parameters comprises at least one of: a channel large scale characteristic, an average gain, an average delay, a delay spread, a Doppler shift, a Doppler spread, or a spatial receiving parameter; and

wherein a reference signal comprises at least one of: a DMRS, a tracking reference signal, a phase tracking reference signal, or a channel state indication reference signal.

3 . The method of claim 1 , wherein a symbol for the target reference signal port is transmitted on the first channel.

4 . The method of claim 1 , wherein each of the X reference signal resources corresponds to one channel, and a symbol for a reference signal port corresponding to a respective reference signal resource is transmitted on a respective channel corresponding to the respective reference signal resource.

5 . A communication node comprising:

one or more processors;

a storage device, which is configured to store one or more programs;

wherein the one or more programs, when executed by the one or more processors, cause the one or more processors to implement the information indication method of claim 1 .

6 . A non-transitory computer-readable storage medium, storing a computer program, wherein the computer program, when executed by a processor, implements the information indication method of claim 1 .

7 . The method of claim 2 , wherein the method further comprises:

predefining a transmission configuration indication (TCI) state, wherein the TCI state is used for indicating that the DMRS port has a quasi-co-location relationship with combined information of channel information of a plurality of reference signals; and

indicating the plurality of reference signals having the quasi-co-location relationship with the DMRS port to the terminal through a TCI domain in DCI signaling.

8 . An information determining method, applied to a terminal, comprising:

receiving indication information, wherein the indication information is used for indicating that channel information of a target antenna port is obtained by combining channel information of X antenna ports, and X is an integer greater than 1, the target antenna port comprises a target reference signal port, channel information of the target reference signal port comprises quasi-co-location parameters, the X antenna ports comprise X reference signal ports, and the X reference signal ports correspond to X reference signal resources; and

determining the channel information of the target antenna port according to the indication information; wherein the indication information is used for indicating that channel information of the target antenna port is obtained by combining channel information of the X antenna ports comprising that the indication information is used for indicating that the quasi-co-location parameters of the target reference signal port are obtained according to the X reference signal resources;

wherein that the indication information is used for indicating that the quasi-co-location parameters of the target reference signal port are obtained according to the X reference signal resources comprises:

the indication information is used for indicating that quasi-co-location parameters of a first channel corresponding to the target reference signal port are obtained according to quasi-co-location parameters of a second channel corresponding to the X reference signal resources;

wherein the second channel satisfies one of that:

the second channel comprises a combined channel of X channels corresponding to the X reference signal resources; or

the second channel comprises a weighted combined channel of X channels corresponding to the X reference signal resources;

wherein the second channel comprises the weighted combined channel of the X channels corresponding to the X reference signal resources, the weighted combined channel is obtained by multiplying each of the X channels by a respective weight factor to obtain X weighted channels and combining the X weighted channels, and the indication information is further used for indicating that the second channel is obtained by weighting and combining a receiving power of each of the X reference signal resources;

wherein the respective weight factor corresponding to each of the X channels is determined according to at least one of following information:

first signaling, wherein the first signaling comprises the respective weight factor corresponding to each of the X channels, wherein the first signaling comprises at least one of: radio resource control (RRC) signaling; medium access control layer control element (MAC CE) signaling; or downlink control information (DCI) signaling;

a sending power ratio of the X channels corresponding to the X reference signal resources;

a sending power ratio of each of the X reference signal resources to a predetermined reference signal resource; or

a sending power of each of the X reference signal resources;

wherein in a Single Frequency Network (SFN) scenario, the target reference signal port comprises at least one demodulation reference signal (DMRS) port, and the X reference signal ports correspond to at least two tracking reference signal (TRS) ports; and

wherein the first signaling comprises a plurality of bits, each of the plurality of bits corresponds to a weight factor of the X channels, and the weight factor is associated with a number of antenna ports corresponding to the X reference signal ports or a bit size of the first signaling.

9 . The method of claim 8 , wherein,

a reference signal comprises at least one of: a DMRS, a tracking reference signal, a phase tracking reference signal, or a channel state indication reference signal; and

wherein the quasi-co-location parameters comprises at least one of: a channel large scale characteristic, an average gain, an average delay, a delay spread, a Doppler shift, a Doppler spread, or a spatial receiving parameter.

10 . The method of claim 8 , wherein,

a symbol for the target reference signal port is transmitted on the first channel;

a symbol for a reference signal port corresponding to a respective reference signal resource is transmitted on a respective channel corresponding to the respective reference signal resource;

each of the X reference signal resources corresponds to one channel.

11 . The method of claim 8 , further comprising:

determining an acquisition manner of the respective weight factor according to the first signaling, wherein the first signaling comprises at least one of: radio resource control (RRC) signaling; medium access control layer control element (MAC CE) signaling; or downlink control information (DCI) signaling; or

determining an acquisition manner of the respective weight factor in a predefined or default manner.

12 . A terminal comprising:

one or more processors;

a storage device, which is configured to store one or more programs;

wherein the one or more programs, when executed by the one or more processors, cause the one or more processors to implement the information determining method of claim 8 .

13 . A non-transitory computer-readable storage medium, storing a computer program, wherein the computer program, when executed by a processor, implements the information determining method of claim 8 .

14 . The method of claim 9 , wherein a predefined transmission configuration indication (TCI) state indicates that a DMRS port has a quasi-co-location relationship with combined information of channel information of a plurality of reference signals, and the method further comprises:

receiving DCI signaling, and determining a reference signal having the quasi-co-location relationship with the DMRS port according to a TCI domain in the DCI signaling.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (26)