Method for uplink transmission associated with antenna port and panel switching

Patent metadata

Field	Value
Publication number	US-12335751-B2
Application number	US-202217855409-A
Country	US
Kind code	B2
Filing date	Jun 30, 2022
Priority date	Jul 24, 2020
Publication date	Jun 17, 2025
Grant date	Jun 17, 2025

Abstract

A wireless communication method for use in a wireless terminal is disclosed. The wireless communication method comprises determining at least one transmission state for an uplink channel, wherein at least one of a spatial relation or an antenna port of the uplink channel is determined based on a first transmission state of the at least one transmission state, and transmitting, to a wireless network node, the uplink channel.

First claim

What is claimed is:

1. A wireless communication method for use in a wireless terminal, the wireless communication method comprising:
determining at least one transmission state for an uplink channel, wherein a spatial relation of the uplink channel is determined based on a first transmission state of the at least one transmission state; and
transmitting, to a wireless network node, the uplink channel,
wherein the at least one transmission state is associated with more than one downlink reference signals,
wherein a pathloss reference signal is determined based on at least one of the more than one downlink reference signals, and
wherein a pathloss estimation is determined based on an average value of more than one pathloss estimations corresponding to the more than one downlink reference signals,
wherein one of the at least one transmission state is associated with one or more reference signals, and wherein the at least one of the spatial relation of the uplink channel is determined based on one of the one or more reference signals associated with the first transmission state.

2. The wireless communication method of claim 1 , wherein the at least one of the more than one downlink reference signals relates to at least one spatial parameter.

3. The wireless communication method of claim 1 , wherein the at least one of the more than one downlink reference signals corresponds to at least one of: a downlink reference signal resource with the lowest or the highest resource identification in the at least one transmission state, or the downlink reference signal resource as a first entry in the at least one transmission state.

4. The wireless communication method of claim 1 , wherein one or more reference signals associated with the at least one transmission state comprise at least one of a downlink reference signal resource, a downlink reference signal port, a sounding reference signal, SRS, resource or an SRS port.

5. The wireless communication method of claim 4 , wherein a number of SRS resources, SRS ports or downlink reference signal resources in one of the at least one transmission state is smaller than or equal to a capability of the wireless terminal or a threshold.

6. The wireless communication method of claim 4 , further comprising:
receiving, from the wireless network node, DCI indicating the at least one transmission state, wherein Q spatial relation(s), P antenna port(s), T antenna port group(s) of the uplink channel are determined based on a corresponding transmission state of the at least one transmission state in order, wherein Q, P, and T are positive integers.

7. The wireless communication method of claim 6 , wherein a length of at least one of a transmitted precoding matrix indicator field or a SRS resource indicator field in the DCI is determined based on the maximum number of one of the downlink reference signal resources, the downlink reference signal ports, the transmission configuration indicator states, transmission states, the SRS resources or the SRS ports associated with the at least one transmission state.

8. A wireless terminal comprising:
a processor; and
a transceiver configured to:
determine at least one transmission state for an uplink channel, wherein a spatial relation of the uplink channel is determined based on a first transmission state of the at least one transmission state, and
transmit, to a wireless network node, the uplink channel,
wherein the at least one transmission state is associated with more than one downlink reference signals,
wherein a pathloss reference signal is determined based on at least one of the more than one downlink reference signals, and
wherein a pathloss estimation is determined based on an average value of more than one pathloss estimations corresponding to the more than one downlink reference signals,
wherein one of the at least one transmission state is associated with one or more reference signals, and wherein the at least one of the spatial relation of the uplink channel is determined based on one of the one or more reference signals associated with the first transmission state.

9. The wireless terminal of claim 8 , wherein the at least one of the more than one downlink reference signals relates to at least one spatial parameter.

10. The wireless terminal of claim 8 , wherein the at least one of the more than one downlink reference signals corresponds to at least one of: a downlink reference signal resource with the lowest or the highest resource identification in the at least one transmission state, or the downlink reference signal resource as a first entry in the at least one transmission state.

11. The wireless terminal of claim 8 , wherein one or more reference signals associated with the at least one transmission state comprise at least one of a downlink reference signal resource, a downlink reference signal port, a sounding reference signal, SRS, resource or an SRS port.

12. The wireless terminal of claim 11 , wherein a number of SRS resources, SRS ports or downlink reference signal resources in one of the at least one transmission state is smaller than or equal to a capability of the wireless terminal or a threshold.

13. The wireless terminal of claim 11 , wherein the processor is further configured to:
receive, from the wireless network node, DCI indicating the at least one transmission state, wherein Q spatial relation(s), P antenna port(s), T antenna port group(s) of the uplink channel are determined based on a corresponding transmission state of the at least one transmission state in order, wherein Q, P, and T are positive integers.

14. The wireless terminal of claim 13 , wherein a length of at least one of a transmitted precoding matrix indicator field or a SRS resource indicator field in the DCI is determined based on the maximum number of one of the downlink reference signal resources, the downlink reference signal ports, the transmission configuration indicator states, transmission states, the SRS resources or the SRS ports associated with the at least one transmission state.

15. A wireless communication method for use in a wireless network node, the wireless communication method comprising:
transmitting, to a wireless terminal, a first command associated with at least one transmission state; and
receiving, from the wireless terminal, an uplink channel,
wherein a spatial relation of the uplink channel is determined based on a first transmission state of the at least one transmission state,
wherein the at least one transmission state is associated with more than one downlink reference signals,
wherein a pathloss reference signal is determined based on at least one of the more than one downlink reference signals, and
wherein a pathloss estimation is determined based on an average value of more than one pathloss estimations corresponding to the more than one downlink reference signals,
wherein one of the at least one transmission state is associated with one or more reference signals, and wherein the at least one of the spatial relation of the uplink channel is determined based on one of the one or more reference signals associated with the first transmission state.

16. A wireless network node comprising:
a processor; and
a transceiver configured to:
transmit, to a wireless terminal, a first command associated with at least one transmission state, and
receive, from the wireless terminal, an uplink channel,
wherein a spatial relation of the uplink channel is determined based on a first transmission state of the at least one transmission state,
wherein the at least one transmission state is associat

Assignees

• Zte Corp

Inventors

• Gao Bo
• Lu Zhaohua
• Wu Hao
• Jiang Chuangxin
• Yan Wenjun

Classifications

• H04W74/0866

  using a dedicated channel for access · CPC title

• H04W74/0816

  with collision avoidance · CPC title

• H04L5/0051

  of dedicated pilots, i.e. pilots destined for a single user or terminal · CPC title

• H04L5/0025

  Spatial division following the spatial signature of the channel · CPC title

• H04B7/088

  using beam selection · CPC title