US-12628001-B2 - Method and device for avoiding mismatch between a spatial state and configuration information of a beam in wireless communication

US12628001B2US 12628001 B2US12628001 B2US 12628001B2US-12628001-B2

Abstract

Method and Device in nodes for wireless communication. A first node receives a first configuration information block, a first signaling and a first reference signal resource. The first configuration information block comprises configuration information of the first reference signal resource; the first signaling indicates a first transmission configuration state; the first configuration information block is used to determine a first transmission configuration state set; the first signaling is used to determine a first time; a second transmission configuration state is used to determine a spatial relation of the first reference signal resource before the first time; a spatial relation of the first reference signal resource is related to whether the first transmission configuration state belongs to the first transmission configuration state set after the first time. The above method ensures that when the beam is dynamically updated, a TCI state of a reference signal constantly matches its configuration information.

Inventors

Keying Wu
Xiaobo Zhang

Assignees

Apogee 5G Global, LLC

Dates

Publication Date: 20260512
Application Date: 20220511
Priority Date: 20210512

Claims (20)

1 . A user equipment (UE) for wireless communications, the UE comprising: a transceiver; and a processor, wherein the transceiver and the processor are configured to: receive a first configuration information block, wherein the first configuration information block comprises configuration information of a first reference signal resource, receive a first signaling, wherein the first signaling indicates a first transmission configuration state, and receive the first reference signal resource, wherein the first configuration information block is used to determine a first transmission configuration state set, and the first transmission configuration state set comprises at least one transmission configuration state; and wherein the first signaling is used to determine a first time, and wherein a second transmission configuration state is used to determine a spatial relation of the first reference signal resource before the first time, and wherein the spatial relation of the first reference signal resource is related to whether the first transmission configuration state belongs to the first transmission configuration state set after the first time, and wherein on a condition that the first transmission configuration state belongs to the first transmission configuration state set, the first transmission configuration state is used to determine the spatial relation of the first reference signal resource after the first time, and wherein on a condition that the first transmission configuration state does not belong to the first transmission configuration state set, the second transmission configuration state is used to determine the spatial relation of the first reference signal resource after the first time.
2 . The UE according to claim 1 , wherein the transceiver and the processor are further configured to: transmits a first information block, or, drops transmitting the first information block, wherein the first information block comprises a reporting for a first reporting configuration, and reference signal resources associated with the first reporting configuration comprise the first reference signal resource, and wherein whether the UE transmits the first information block is related to whether the first transmission configuration state belongs to the first transmission configuration state set, and wherein on a condition that the first transmission configuration state belongs to the first transmission configuration state set, the UE transmits the first information block, and wherein if on a condition that the first transmission configuration state does not belong to the first transmission configuration state set, the UE drops transmitting the first information block.
3 . The UE according to claim 1 , wherein the transceiver and the processor are further configured to: transmit a second information block, wherein the second information block comprises a reporting for a second reporting configuration, and wherein reference signal resources associated with the second reporting configuration comprise the first reference signal resource, and whether a measurement performed on the first reference signal resource is used to generate the second information block is related to whether the first transmission configuration state belongs to the first transmission configuration state set, and wherein on a condition that the first transmission configuration state belongs to the first transmission configuration state set, the measurement performed on the first reference signal resource is used to generate the second information block, and wherein on a condition that the first transmission configuration state does not belong to the first transmission configuration state set, the second information block is unrelated to the measurement performed on the first reference signal resource.
4 . The UE according to claim 1 , wherein the transceiver and the processor are further configured to: transmits a first signal, wherein the first signal carries a HARQ-ACK associated with the first signaling.
5 . The UE according to claim 1 , wherein the transceiver and the processor are further configured to: receives a second signal, wherein the first signaling comprises scheduling information of the second signal.
6 . The UE according to claim 1 , wherein the first configuration information block indicates M reference value sets, M being a positive integer greater than 1, and wherein after the first time, a first parameter value set indicates at least one of frequency-domain resources, time-domain resources, density, period or a number of port(s) of the first reference signal resource, and wherein the first parameter value set is related to whether the first transmission configuration state belongs to the first transmission configuration state set, and wherein on a condition that the first transmission configuration state belongs to the first transmission configuration state set, the first transmission configuration state is used to determine the first parameter value set out of the M parameter value sets, and wherein on a condition that the first transmission configuration state does not belong to the first transmission configuration state set, the second transmission configuration state is used to determine the first parameter value set out of the M parameter value sets.
7 . The UE according to claim 1 , wherein the transceiver and the processor are further configured to: receives a second configuration information block, wherein the second configuration information block is used to determine N transmission configuration states, N being a positive integer greater than 1, and wherein the first signaling indicates the first transmission configuration state out of the N transmission configuration states.
8 . A base station for wireless communications, the base station comprising: a transceiver; and a processor, wherein the transceiver and the processor are configured to: transmit a first configuration information block, wherein the first configuration information block comprises configuration information of a first reference signal resource, transmit a first signaling, wherein the first signaling indicates a first transmission configuration state, and transmit the first reference signal resource, wherein the first configuration information block is used to determine a first transmission configuration state set, and the first transmission configuration state set comprises at least one transmission configuration state, and wherein the first signaling is used to determine a first time, and wherein a second transmission configuration state is used to determine a spatial relation of the first reference signal resource before the first time, and wherein the spatial relation of the first reference signal resource is related to whether the first transmission configuration state belongs to the first transmission configuration state set after the first time, and wherein on a condition that the first transmission configuration state belongs to the first transmission configuration state set, the first transmission configuration state is used to determine the spatial relation of the first reference signal resource after the first time, and wherein on a condition that the first transmission configuration state does not belong to the first transmission configuration state set, the second transmission configuration state is used to determine the spatial relation of the first reference signal resource after the first time.
9 . The base station according to claim 8 , wherein the transceiver and the processor are further configured to: receives a first information block, or, drops receiving the first information block, wherein the first information block comprises a reporting for a first reporting configuration, and reference signal resources associated with the first reporting configuration comprise the first reference signal resource, and wherein whether a transmitter of the first information block transmits the first information block is related to whether the first transmission configuration state belongs to the first transmission configuration state set, and wherein on a condition that the first transmission configuration state belongs to the first transmission configuration state set, the transmitter of the first information block transmits the first information block, and wherein on a condition that if the first transmission configuration state does not belong to the first transmission configuration state set, the transmitter of the first information block drops transmitting the first information block.
10 . The base station according to claim 8 , wherein the transceiver and the processor are further configured to: receive a second information block, wherein the second information block comprises a reporting for a second reporting configuration, and wherein reference signal resources associated with the second reporting configuration comprise the first reference signal resource, and whether a measurement performed on the first reference signal resource is used to generate the second information block is related to whether the first transmission configuration state belongs to the first transmission configuration state set, and wherein on a condition that the first transmission configuration state belongs to the first transmission configuration state set, the measurement performed on the first reference signal resource is used to generate the second information block, and wherein on a condition that the first transmission configuration state does not belong to the first transmission configuration state set, the second information block is unrelated to the measurement performed on the first reference signal resource.
11 . The base station according to claim 8 , wherein the transceiver and the processor are further configured to: receives a first signal, wherein the first signal carries a HARQ-ACK associated with the first signaling.
12 . The base station according to claim 8 , wherein the transceiver and the processor are further configured to: transmits a second signal, wherein the first signaling comprises scheduling information of the second signal.
13 . The base station according to claim 8 , wherein the first configuration information block indicates M parameter value sets, M being a positive integer greater than 1, and wherein after the first time, a first parameter value set indicates at least one of frequency-domain resources, time-domain resources, density, period or a number of ports of the first reference signal resource, and wherein the first parameter value set is related to whether the first transmission configuration state belongs to the first transmission configuration state set, and wherein on a condition that the first transmission configuration state belongs to the first transmission configuration state set, the first transmission configuration state is used to determine the first parameter value set out of the M parameter value sets, and wherein on a condition that the first transmission configuration state does not belong to the first transmission configuration state set, the second transmission configuration state is used to determine the first parameter value set out of the M parameter value sets.
14 . The base station according to claim 8 , wherein the transceiver and the processor are further configured to: transmits a second configuration information block, wherein the second configuration information block is used to determine N transmission configuration states, N being a positive integer greater than 1, and wherein the first signaling indicates the first transmission configuration state out of the N transmission configuration states.
15 . A method in a user equipment (UE) for wireless communications, the method comprising: receiving a first configuration information block, wherein the first configuration information block comprises configuration information of a first reference signal resource; receiving a first signaling, wherein the first signaling indicates a first transmission configuration state; and receiving the first reference signal resource, wherein the first configuration information block is used to determine a first transmission configuration state set, and the first transmission configuration state set comprises at least one transmission configuration state, and wherein the first signaling is used to determine a first time, and wherein a second transmission configuration state is used to determine a spatial relation of the first reference signal resource before the first time, and wherein the spatial relation of the first reference signal resource is related to whether the first transmission configuration state belongs to the first transmission configuration state set after the first time, and wherein on a condition that the first transmission configuration state belongs to the first transmission configuration state set, the first transmission configuration state is used to determine the spatial relation of the first reference signal resource after the first time, and wherein on a condition that the first transmission configuration state does not belong to the first transmission configuration state set, the second transmission configuration state is used to determine the spatial relation of the first reference signal resource after the first time.
16 . The method according to claim 15 , comprising: transmitting a first information block, or dropping transmitting the first information block, wherein the first information block comprises a reporting for a first reporting configuration, and reference signal resources associated with the first reporting configuration comprise the first reference signal resource, and wherein whether the UE transmits the first information block is related to whether the first transmission configuration state belongs to the first transmission configuration state set, and wherein if on a condition that the first transmission configuration state belongs to the first transmission configuration state set, the UE transmits the first information block, and wherein on a condition that the first transmission configuration state does not belong to the first transmission configuration state set, the UE drops transmitting the first information block.
17 . The method according to claim 15 , comprising: transmitting a second information block, the second information block comprising a reporting for a second reporting configuration, wherein reference signal resources associated with the second reporting configuration comprise the first reference signal resource, and whether a measurement performed on the first reference signal resource is used to generate the second information block is related to whether the first transmission configuration state belongs to the first transmission configuration state set, and wherein on a condition that the first transmission configuration state belongs to the first transmission configuration state set, the measurement performed on the first reference signal resource is used to generate the second information block, and wherein on a condition that the first transmission configuration state does not belong to the first transmission configuration state set, the second information block is unrelated to the measurement performed on the first reference signal resource.
18 . The method according to claim 15 , comprising at least one of the following: transmitting a first signal, wherein the first signal carries a HARQ-ACK associated with the first signaling, or receiving a second signal, wherein the first signaling comprises scheduling information of the second signal.
19 . The method according to claim 15 , wherein the first configuration information block indicates M parameter value sets, M being a positive integer greater than 1, and wherein after the first time, a first parameter value set indicates at least one of frequency-domain resources, time-domain resources, density, period or a number of port(s) of the first reference signal resource, and wherein the first parameter value set is related to whether the first transmission configuration state belongs to the first transmission configuration state set, and wherein on a condition that the first transmission configuration state belongs to the first transmission configuration state set, the first transmission configuration state is used to determine the first parameter value set out of the M parameter value sets, and wherein on a condition that the first transmission configuration state does not belong to the first transmission configuration state set, the second transmission configuration state is used to determine the first parameter value set out of the M parameter value sets.
20 . The method according to claim 15 , comprising: receiving a second configuration information block, wherein the second configuration information block is used to determine N transmission configuration states, N being a positive integer greater than 1, and wherein the first signaling indicates the first transmission configuration state out of the N transmission configuration states.

Description

CROSS REFERENCE TO RELATED APPLICATIONS This application claims the priority benefit of Chinese Patent Application No. 202110517403.3, filed on May 12, 2021, the full disclosure of which is incorporated herein by reference. BACKGROUND Technical Field The present disclosure relates to transmission methods and devices in wireless communication systems, and in particular to a transmission method and device of a radio signal in a wireless communication system supporting cellular networks. Related Art Multi-antenna technology is a key technique in both 3rd Generation Partner Project (3GPP) Long-term Evolution (LIE) system and New Radio (NR) system. By configuring multiple antennas at a communication node, for instance, at a base station or a User Equipment (UE) to acquire extra spatial degrees of freedom. The multiple antennas form through beamforming a beam pointing in a specific direction to improve communication quality. Since the beam formed through beamforming of multiple antennas is usually narrow, beams from both sides of communication shall be aligned to enable effective communication. When out-of-step between transmission/reception beams is incurred by UE movement or other factors, the communications will face a large decline in quality or even communication failure. Therefore, beam management is proposed in NR Release (R) 15 and R16 for beam selection, updating and indication between two communication sides, thus achieving performance gains brought by multi-antenna. In NR R15 and R16, a control channel and a data channel adopt different beam management/indication mechanisms, and uplink and downlink also adopt different beam management/indication mechanisms. However, in many cases, the control channel and the data channel can adopt a same beam, and there is channel reciprocity between uplink and downlink channels in many application scenarios, so a same beam can be used. Using this feature can greatly reduce the system complexity, signaling overhead and delay. In 3GPP Radio Access Network (RAN) 1 #103e meeting, the technology of using a physical layer signaling to update beams of the control channel and data channel at the same time has been adopted, and in the scenario where reciprocity exists in uplink and downlink channels, the uplink and downlink beams can be updated simultaneously with a physical layer signaling. At 3GPP RANI #103e meeting, the proposal of using a downlink grant Downlink control information (DCI) for uplink/downlink beam update was approved. SUMMARY Inventors have found through researches that if a downlink beam indicated by a DCI is not only applicable to a downlink data channel and a downlink control channel, but is also applicable to (part of) a downlink reference signal, and a spatial state of the downlink reference signal will be dynamically updated. Considering that configuration information of the downlink reference signal, comprising time-frequency resources, density and a number of reference signal ports, is semi-statically configured in the existing standards, how to avoid the mismatch between the dynamically indicated spatial state and the semi-statically configured configuration information is a problem to be solved. To address the above problem, the present disclosure provides a solution. It should be noted that although the above description takes cellular network and downlink reference signal as an example, the application is also applicable to other scenarios, such as Vehicle-to-Everything (V2X), sidelink transmission and other reference signals, where similar technical effects can also be achieved. Additionally, the adoption of a unified solution for various scenarios, including but not limited to cellular network, V2X, sidelink transmission, downlink reference signal and other reference signals, contributes to the reduction of hardcore complexity and costs. If no conflict is incurred, embodiments in a first node in the present disclosure and the characteristics of the embodiments can also be applicable to a second node, and vice versa. And the embodiments in the present disclosure and the characteristics in the embodiments can be arbitrarily combined if there is no conflict. In one embodiment, interpretations of the terminology in the present disclosure refer to definitions given in the 3GPP TS36 series. In one embodiment, interpretations of the terminology in the present disclosure refer to definitions given in the 3GPP TS38 series. In one embodiment, interpretations of the terminology in the present disclosure refer to definitions given in the 3GPP TS37 series. In one embodiment, interpretations of the terminology in the present disclosure refer to definitions given in Institute of Electrical and Electronics Engineers (IEEE) protocol specifications. The present disclosure provides a method in a first node for wireless communications, comprising: receiving a first configuration information block, the first configuration information block comprising configuration