Granted Patent B2

US 12,507,228 · App. 18/225,690 · Granted Dec 23, 2025

Inventor: Lu Wu (Shanghai, CN)

Assignee: SHANGHAI TUILUO COMMUNICATION TECHNOLOGY PARTNERSHIP (LIMITED PARTNERSHIP)

H04W72/046H04L5/0048

Abstract

Claims (53)

1 . A first node for wireless communications, comprising:

a first receiver, receiving a first signaling, the first signaling being used to determine a first time; and receiving a first reference signal after the first time;

wherein the first signaling is used to indicate a target reference signal; after the first time, the target reference signal is used to determine a spatial relation of a transmission on a target channel, and the first signaling is used to indicate whether the target channel is an uplink physical layer channel or a downlink physical layer channel;

whether the target channel is an uplink physical layer channel or a downlink physical layer channel is used to determine whether the first reference signal and the target reference signal are spatially related; when the target channel is an uplink physical layer channel and the first reference signal belongs to a first reference signal set, the first reference signal and the target reference signal are spatially related.

2 . The first node according to claim 1 , characterized in that when the target channel is an uplink physical layer channel and the first reference signal does not belong to the first reference signal set, the first reference signal and the target reference signal are spatially unrelated.

3 . The first node according to claim 1 , characterized in that

when the target channel is a downlink physical layer channel, the first reference signal and the target reference signal are spatially unrelated;

or, when the target channel is a downlink physical layer channel and the first reference signal belongs to a second reference signal set, the first reference signal and the target reference signal are spatially related; when the target channel is a downlink physical layer channel and the first reference signal does not belong to the second reference signal set, the first reference signal and the target reference signal are spatially unrelated; at least one reference signal in the second reference signal set does not belong to the first reference signal set.

4 . The first node according to claim 1 , comprising:

a first transmitter, transmitting a third reference signal set;

wherein the target channel is an uplink physical layer channel, and at least one reference signal in the third reference signal set is used to determine a precoder of a signal transmitted on the target channel; the third reference signal set is associated with the first reference signal set.

5 . The first node according to claim 1 , characterized in that

before the first time, the spatial relation of the transmission on the target channel is unrelated to the target reference signal;

or, comprising: a first transmitter, transmitting a first signal; where the first signaling is used to indicate time-frequency resources occupied by the first signal; the transmission of the first signal is used to indicate that after the first time, the target reference signal is used to determine the spatial relation of the transmission on the target channel.

6 . A second node for wireless communications, comprising:

a second transmitter, transmitting a first signaling, the first signaling being used to determine a first time; and transmitting a first reference signal after the first time;

wherein the first signaling is used to indicate a target reference signal; after the first time, the target reference signal is used to determine a spatial relation of a transmission on a target channel, and the first signaling is used to indicate whether the target channel is an uplink physical layer channel or a downlink physical layer channel; whether the target channel is an uplink physical layer channel or a downlink physical layer channel is used to determine whether the first reference signal and the target reference signal are spatially related; when the target channel is an uplink physical layer channel and the first reference signal belongs to a first reference signal set, the first reference signal and the target reference signal are spatially related.

7 . The second node according to claim 6 , characterized in that when the target channel is an uplink physical layer channel and the first reference signal does not belong to the first reference signal set, the first reference signal and the target reference signal are spatially unrelated.

8 . The second node according to claim 6 , characterized in that

when the target channel is a downlink physical layer channel, the first reference signal and the target reference signal are spatially unrelated;

or, when the target channel is a downlink physical layer channel and the first reference signal belongs to a second reference signal set, the first reference signal and the target reference signal are spatially related; when the target channel is a downlink physical layer channel and the first reference signal does not belong to the second reference signal set, the first reference signal and the target reference signal are spatially unrelated; at least one reference signal in the second reference signal set does not belong to the first reference signal set.

9 . The second node according to claim 6 , characterized in that

a second receiver, receiving a third reference signal set;

wherein the target channel is an uplink physical layer channel, and at least one reference signal in the third reference signal set is used to determine a precoder of a signal transmitted on the target channel; the third reference signal set is associated with the first reference signal set.

10 . The second node according to claim 6 , characterized in that

before the first time, the spatial relation of the transmission on the target channel is unrelated to the target reference signal;

or, a second receiver, receiving a first signal; where the first signaling is used to indicate time-frequency resources occupied by the first signal; the transmission of the first signal is used to indicate that after the first time, the target reference signal is used to determine the spatial relation of the transmission on the target channel.

11 . A method in a first node for wireless communications, comprising:

receiving a first signaling, the first signaling being used to determine a first time; and receiving a first reference signal after the first time;

wherein the first signaling is used to indicate a target reference signal; after the first time, the target reference signal is used to determine a spatial relation of a transmission on a target channel, and the first signaling is used to indicate whether the target channel is an uplink physical layer channel or a downlink physical layer channel; whether the target channel is an uplink physical layer channel or a downlink physical layer channel is used to determine whether the first reference signal and the target reference signal are spatially related; when the target channel is an uplink physical layer channel and the first reference signal belongs to a first reference signal set, the first reference signal and the target reference signal are spatially related.

12 . The method according to claim 11 , characterized in that when the target channel is an uplink physical layer channel and the first reference signal does not belong to the first reference signal set, the first reference signal and the target reference signal are spatially unrelated.

13 . The method according to claim 11 , characterized in that

when the target channel is a downlink physical layer channel, the first reference signal and the target reference signal are spatially unrelated;

or, when the target channel is a downlink physical layer channel and the first reference signal belongs to a second reference signal set, the first reference signal and the target reference signal are spatially related; when the target channel is a downlink physical layer channel and the first reference signal does not belong to the second reference signal set, the first reference signal and the target reference signal are spatially unrelated; at least one reference signal in the second reference signal set does not belong to the first reference signal set.

14 . The method according to claim 11 , characterized in that

transmitting a third reference signal set;

wherein the target channel is an uplink physical layer channel, and at least one reference signal in the third reference signal set is used to determine a precoder of a signal transmitted on the target channel; the third reference signal set is associated with the first reference signal set.

15 . The method according to claim 11 , characterized in that

before the first time, the spatial relation of the transmission on the target channel is unrelated to the target reference signal;

or, comprising: transmitting a first signal; where the first signaling is used to indicate time-frequency resources occupied by the first signal; the transmission of the first signal is used to indicate that after the first time, the target reference signal is used to determine the spatial relation of the transmission on the target channel.

16 . A method in a second node for wireless communications, comprising:

transmitting a first signaling, the first signaling being used to determine a first time; and transmitting a first reference signal after the first time;

wherein the first signaling is used to indicate a target reference signal; after the first time, the target reference signal is used to determine a spatial relation of a transmission on a target channel, and the first signaling is used to indicate whether the target channel is an uplink physical layer channel or a downlink physical layer channel; whether the target channel is an uplink physical layer channel or a downlink physical layer channel is used to determine whether the first reference signal and the target reference signal are spatially related; when the target channel is an uplink physical layer channel and the first reference signal belongs to a first reference signal set, the first reference signal and the target reference signal are spatially related.

17 . The method according to claim 16 , characterized in that when the target channel is an uplink physical layer channel and the first reference signal does not belong to the first reference signal set, the first reference signal and the target reference signal are spatially unrelated.

18 . The method according to claim 16 , characterized in that

when the target channel is a downlink physical layer channel, the first reference signal and the target reference signal are spatially unrelated;

or, when the target channel is a downlink physical layer channel and the first reference signal belongs to a second reference signal set, the first reference signal and the target reference signal are spatially related; when the target channel is a downlink physical layer channel and the first reference signal does not belong to the second reference signal set, the first reference signal and the target reference signal are spatially unrelated; at least one reference signal in the second reference signal set does not belong to the first reference signal set.

19 . The method according to claim 16 , characterized in that

receiving a third reference signal set;

wherein the target channel is an uplink physical layer channel, and at least one reference signal in the third reference signal set is used to determine a precoder of a signal transmitted on the target channel; the third reference signal set is associated with the first reference signal set.

20 . The method according to claim 16 , characterized in that

before the first time, the spatial relation of the transmission on the target channel is unrelated to the target reference signal;

or, receiving a first signal; where the first signaling is used to indicate time-frequency resources occupied by the first signal; the transmission of the first signal is used to indicate that after the first time, the target reference signal is used to determine the spatial relation of the transmission on the target channel.

Assignments (2)

Priority Claims (2)

Continuity (2)

References Cited (11)