Reference signaling schemes in wireless communications

Patent metadata

Field	Value
Publication number	US-12489581-B2
Application number	US-202217819901-A
Country	US
Kind code	B2
Filing date	Aug 15, 2022
Priority date	Aug 7, 2020
Publication date	Dec 2, 2025
Grant date	Dec 2, 2025

Abstract

A wireless communication method is described. The method is performed by a user device and comprises: determining a list of one or more reference signals; receiving, during a first time unit, a first signaling that includes a state; determining a relationship between a reference signal corresponding to the state and the list; and determining, based on the relationship, a second time unit associated with the state or the first signaling.

First claim

What is claimed is:

1 . A method of wireless communication, the method performed by a user device and comprising:
reporting a capability information to a network device; determining a list of one or more reference signals, wherein a maximum number of the one or more reference signals of the list is included in the capability information; receiving, during a first time unit, a first signaling that includes a state including a quasi-co-location (QCL) reference signal; determining a relationship between a reference signal corresponding to the state and the list by determining whether the reference signal is in the list; and determining, based on the relationship, a second time unit associated with the state or the first signaling, wherein the determining of the second time unit comprises determining, based on the relationship, whether a duration for the user device to wait for a first transmission of the reference signal is included in an interval between the first time unit and the second time unit, wherein the duration for the user device to wait for the first transmission of the reference signal is not included in the interval in response to the determining that the reference signal is in the list and the duration for the user device to wait for the first transmission of the reference signal is included in the interval in response to the determining that the reference signal is not in the list, wherein the reference signal is added to the list in the second time unit in response to the determining that the reference signal is not in the list, and a reference signal corresponding to an inactive transmission configuration indication (TCI) state of a channel is deleted from the list, and wherein applying of the first signaling starts from a time unit that is no later than the second time unit, and the reference signal added to the list and the one or more reference signals comprise at least one of a synchronization signal block (SSB) or a tracking reference signal, TRS, of a channel state information reference signal (CSI-RS) for tracking.

2 . The method of claim 1 , wherein the relationship is determined during a third time unit that is i) after a predefined time length from a time unit including a hybrid automatic repeat request ACK (HARQ-ACK) for a physical downlink shared channel (PDSCH) carrying the first signaling, or ii) after a predefined time length from the first time unit.

3 . The method of claim 1 , further comprising: receiving a second signaling that includes the list, wherein a new reference signal in the second signaling is added to the list during the second time unit.

4 . The method of claim 1 , wherein the list is included in information reported by the user device, and wherein the information reported by the user device is included in 1) one of a third signaling, a CSI (channel status information) reporting, or a UCI (uplink control information), 2) the list during an interval between a fifth instance and a sixth instance, the interval being predefined or determined based on a capability of the user device.

5 . The method of claim 1 , wherein the list includes a reference signal corresponding to an active TCI state of the channel that includes one of a physical downlink control channel (PDCCH) in a control resource set (CORESET) or a physical downlink shared channel (PDSCH).

6 . The method of claim 1 , wherein the list is based on the capability information reported by the user device and wherein the list is associated with a second parameter that includes one of following: a CORESET pool, a serving cell, a serving cell group, the user device, or a type of the first signaling.

7 . The method of claim 1 , wherein the second time unit is determined based on at least one of following: a type of new beam state, the type of a target element of the state, or the type of reference resource in the state and, wherein the second time unit is determined to satisfy at least one of following: i) applying of the state to an element starts from a time unit that is no later than the second time unit, ii) the state is determined as a candidate state for the element starting from a time unit that is no later than the second time unit, iii) the user device has a capability to receive a PDCCH with the state for the element no later than the second time unit, iv) receiving of the element with the state starts from a time unit that is no later than the second time unit, or v) receiving of a PDCCH with the state for an element starts from a time unit that is no later than the second time unit.

8 . A method of wireless communication, the method performed by a network device and comprising:
receiving a capability information from a user device; determining a list of one or more reference signals, wherein a maximum number of the one or more reference signals of the list is included in the capability information; transmitting, during a first time unit, to the user device, a first signaling that includes a state including a quasi-co-location (QCL) reference signal; determining a relationship between a reference signal corresponding to the state and the list by determining whether the reference signal is in the list; and determining, based on the relationship, a second time unit associated with the state or the first signaling, wherein the determining of the second time unit comprises determining, based on the relationship, whether a duration for the user device to wait for a first transmission of the reference signal is included in an interval between the first time unit and the second time unit, wherein the duration for the user device to wait for the first transmission of the reference signal is not included in the interval in response to the determining that the reference signal is in the list and the duration for the user device to wait for the first transmission of the reference signal is included in the interval in response to the determining that the reference signal is not in the list, wherein the reference signal is added to the list in the second time unit in response to the determining that the reference signal is not in the list, and a reference signal corresponding to an inactive transmission configuration indication (TCI) state of a channel is deleted from the list, and wherein applying of the first signaling starts from a time unit that is no later than the second time unit, and the reference signal added to the list and the one or more reference signals comprise at least one of a synchronization signal block (SSB) or a tracking reference signal, TRS, of a channel state information reference signal (CSI-RS) for tracking.

9 . The method of claim 8 , further comprising:
transmitting an element with the state after a first transmission of the reference signal in case that the reference signal is not included in the list, the elements including a channel or a signal, or transmitting an element with the state without waiting for a first transmission of the reference signal in case that the reference signal is included in the list, the elements including a channel or a signal.

10 . The method of claim 8 ,
wherein the relationship is determined during a third time unit that is i) after a predefined time length from a time unit including a hybrid automatic repeat request ACK (HARQ-ACK) for a physical downlink shared channel (PDSCH) carrying the first signaling, or ii) after a predefined time length from the first time unit.

11 . The method of claim 8 , further comprising: transmitting a second signaling which includes the list.

12 . The method of claim 8 , wherein the first signaling includes information to update the list and wherein the first

Assignees

• Zte Corp

Inventors

• Zhang Shujuan
• Gao Bo
• Lu Zhaohua
• Wu Hao
• Jiang Chuangxin
• Yan Wenjun
• Pan Yu

Classifications

• H04L5/0007

  the frequencies being orthogonal, e.g. OFDM(A) or DMT · CPC title

• H04L5/0055

  Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861) · CPC title

• Y02D30/70

  in wireless communication networks · CPC title

• H04L5/0053 Primary

  Allocation of signalling, i.e. of overhead other than pilot signals · CPC title

• H04L5/0044 Primary

  Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH · CPC title