Terminal transmitter state determination method, system, base station and terminal

Patent metadata

Field	Value
Publication number	US-12568544-B2
Application number	US-202418427174-A
Country	US
Kind code	B2
Filing date	Jan 30, 2024
Priority date	Apr 28, 2022
Publication date	Mar 3, 2026
Grant date	Mar 3, 2026

Abstract

The present disclosure relates to a terminal transmitter state determination method, a system, a base station and a terminal, relating to the technical field of communications. The method of the present disclosure comprises: sending transmitter state configuration information from a base station to a terminal, wherein a band on which transmitter chains of the terminal perform uplink transmission is dynamically switched among more than two bands, and the transmitter state configuration information is configured to, in a case that a selectable transmitter state of the terminal is not unique after the band on which the transmitter chains of the terminal perform the uplink transmission is switched, indicate the transmitter state of the terminal after the switching.

First claim

What is claimed is:

1 . A method for determining a transmitter state of a terminal, performed by a base station, comprising:
sending transmitter state configuration information to the terminal, wherein a band on which one or more transmitter chains of the terminal perform uplink transmission is dynamically switched among more than two bands, and the transmitter state configuration information is configured to, in a case that a selectable transmitter state of the terminal is not unique after the band on which the one or more transmitter chains of the terminal perform the uplink transmission is switched, indicate the transmitter state of the terminal after the switching.

2 . The method for determining the transmitter state according to claim 1 , wherein the case that the selectable transmitter state of the terminal is not unique comprises that:
before the switching, two-antenna-port uplink transmission is supported on at least one carrier on a first band among the more than two bands by the terminal, and after the switching, no uplink transmission is performed by the terminal on any carrier on the first band, and one-antenna-port uplink transmission is performed by the terminal on at least one carrier on a second band among the more than two bands.

3 . The method for determining the transmitter state according to claim 2 , wherein the transmitter state configuration information is configured to indicate the terminal to consider that one-antenna-port uplink transmission is performed on the first band and the one-antenna-port uplink transmission is performed on the second band, or to indicate the terminal to consider that two-antenna-port uplink transmission is performed on the at least one carrier on the second band.

4 . The method for determining the transmitter state according to claim 3 , wherein the transmitter state configuration information is a first uplinkTxSwitching-DualUL-TxState information element in a Radio Resource Control (RRC) information element, the first uplinkTxSwitching-DualUL-TxState information element is configured as a first preset value to indicate the terminal to consider that the one-antenna-port uplink transmission is performed on the first band and the one-antenna-port uplink transmission is performed on the second band, and the first uplinkTxSwitching-DualUL-TxState information element is configured as a second preset value to indicate the terminal to consider that the two-antenna-port uplink transmission is performed on the at least one carrier on the second band.

5 . The method for determining the transmitter state according to claim 1 , wherein the case that the selectable transmitter state of the terminal is not unique comprises that:
before the switching, one-antenna-port uplink transmission is performed by the terminal on at least one carrier on at least one of a first band and a second band among the more than two bands, and one-antenna-port uplink transmission is supported on both the first band and the second band by the terminal, and after the switching, no uplink transmission is performed by the terminal on the first band and no uplink transmission is performed by the terminal on the second band, and one-antenna-port uplink transmission is performed by the terminal on at least one carrier on a third band among the more than two bands.

6 . The method for determining the transmitter state according to claim 5 , wherein,
the transmitter state configuration information is configured to indicate the terminal to consider that the one-antenna-port uplink transmission is performed on at least one carrier on the first band, and the one-antenna-port uplink transmission is performed on at least one carrier on the third band; or the transmitter state configuration information is configured to indicate the terminal to consider that the one-antenna-port uplink transmission is performed on at least one carrier on the second band, and the one-antenna-port uplink transmission is performed on at least one carrier on the third band; or the transmitter state configuration information is configured to indicate the terminal to consider that two-antenna-port uplink transmission is performed on at least one carrier on the third band.

7 . The method for determining the transmitter state according to claim 6 , wherein the transmitter state configuration information is a second uplinkTxSwitching-DualUL-TxState information element in a Radio Resource Control (RRC) information element, the second uplinkTxSwitching-DualUL-TxState information element is configured as a third preset value to indicate the terminal to consider that the one-antenna-port uplink transmission is performed on the at least one carrier on the first band and the one-antenna-port uplink transmission is performed on the at least one carrier on the third band; the second uplinkTxSwitching-DualUL-TxState information element is configured as a fourth preset value to indicate the terminal to consider that the one-antenna-port uplink transmission is performed on the at least one carrier on the second band and the one-antenna-port uplink transmission is performed on the at least one carrier on the third band; and the second uplinkTxSwitching-DualUL-TxState information element is configured as a fifth preset value to indicate the terminal to consider that the two-antenna-port uplink transmission is performed on the at least one carrier on the third band.

8 . The method for determining the transmitter state according to claim 1 , further comprising:
receiving, by the base station, capability information of the terminal, wherein the capability information comprises one or more of: a transmitter switching option supported by the terminal being dual uplink, information of each band of the more than two bands, and two transmitter chains being supported by the terminal on each band of the more than two bands; and sending, by the base station, transmitter switching configuration information to the terminal, wherein the transmitter switching configuration information comprises one or more of: configuration information of each band of the more than two bands, transmitter switching mode configuration information, and transmitter switching option configuration information, and wherein the transmitter switching mode configuration information is configured to configure the terminal to support the two transmitter chains on each band of the more than two bands, and the transmitter switching option configuration information is configured to configure the transmitter switching option to be the dual uplink.

9 . A method for determining a transmitter state of a terminal, performed by the terminal, comprising:
receiving transmitter state configuration information sent by a base station, wherein a band on which one or more transmitter chains of the terminal perform uplink transmission is dynamically switched among more than two bands, and the transmitter state configuration information is configured to, in a case that a selectable transmitter state of the terminal is not unique after the band on which the one or more transmitter chains of the terminal perform the uplink transmission is switched, indicate the transmitter state of the terminal after the switching; and determining, according to the transmitter state configuration information, the transmitter state of the terminal after the switching, and performing band switching for uplink transmission.

10 . The method for determining the transmitter state according to claim 9 , further comprising:
sending capability information to the base station, wherein the capability information comprises one or more of: a transmitter switching option supported by the terminal being dual uplink, information of each b

Assignees

• China Telecom Co Ltd

Inventors

• Nan Fang
• Liu Guiqing
• Zhang Xin
• Zhu Jianchi
• She Xiaoming

Classifications

• H04L5/0023

  Time-frequency-space · CPC title

• H04L5/0053

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

• H04L5/0094

  Indication of how sub-channels of the path are allocated · CPC title

• H04L5/001

  the frequencies being arranged in component carriers · CPC title

• H04W72/0453

  Resources in frequency domain, e.g. a carrier in FDMA · CPC title