Energy conservation signal transmission method, base station, and terminal device

Patent metadata

Field	Value
Publication number	US-12238647-B2
Application number	US-202017631508-A
Country	US
Kind code	B2
Filing date	May 28, 2020
Priority date	Aug 1, 2019
Publication date	Feb 25, 2025
Grant date	Feb 25, 2025

Abstract

Disclosed are an energy conservation transmission method, base station, and terminal device; the base station can configure an energy conservation signal for the terminal device; the energy conservation signal carries energy conservation information; the energy conservation information can indicate a first configuration of at least one discontinuous reception (DRX) cycle of the terminal device, the at least one DRX cycle comprising at least one first cycle and/or at least one second cycle; the first cycle and the second cycle are long cycles and/or short cycles, and the first cycle is different from the second cycle; the first configuration of the DRX cycle includes at least one of the maximum number N of DRX cycles, the maximum number K of the first cycle, and the number Y of the first cycle, all of N, K, and Y being integers greater than or equal to 1; thus the energy conservation signal can indicate to the terminal device for any combination of DRX cycles of different lengths, solving the problem in the prior art of how to configure the number of DRX cycles indicated by the energy conservation signal.

First claim

What is claimed is:

1. An energy saving signal transmission method, applied to a base station, and the method comprises:
configuring an energy saving signal for a terminal device, wherein the energy saving signal carries energy saving information used to indicate a first configuration of at least one Discontinuous Reception, DRX, cycle to the terminal device, the at least one DRX cycle comprises at least one first cycle and/or at least one second cycle, wherein the first cycle and the second cycle are long cycles and/or short cycles, and the first cycle is different from the second cycle; the first configuration of the DRX cycle comprises at least one of a maximum quantity N of DRX cycles, a maximum quantity K of first cycles or a quantity Y of first cycles, wherein all of N, K and Y are integers greater than or equal to 1;
sending the energy saving signal to the terminal device;
wherein in response to the first configuration of the DRX cycle comprising the maximum quantity N of DRX cycles, the energy saving information is used to indicate at most N DRX cycles after the energy saving signal currently sent by the base station to the terminal device, wherein the at most N DRX cycles comprise at least one first cycle and/or at least one second cycle, a quantity of DRX cycles indicated by the energy saving signal is N1, a quantity of DRX cycles indicated by an energy saving signal previously sent by the base station to the terminal device is N2, N1 and N2 are same with each other or different from each other, N1 is less than or equal to N, and N2 is less than or equal to N;
in response to the first configuration of the DRX cycle comprising the maximum quantity K of first cycles, the energy saving information is used to indicate at most K first cycles after the energy saving signal currently sent by the base station this time; a quantity of DRX cycles indicated by the energy saving signal currently sent is K1, a quantity of DRX cycles indicated by an energy saving signal previously by the base station to the terminal device is K2, K1 and K2are same with each other or different from each other, K1 is less than or equal to K, and K2 is less than or equal to K;
in response to the first configuration of the DRX cycle comprising the quantity Y of first cycles, the energy saving information is used to indicate a configuration of Y first cycles after the energy saving signal currently sent by the base station.

2. The method of claim 1 , wherein the sending the energy saving signal to the terminal device, comprises:
sending the energy saving signal to the terminal device before an activation moment of the terminal device; or
sending the energy saving signal to the terminal device at the activation moment of the terminal device; or
sending the energy saving signal to the terminal device in response to the terminal device being in an activated state.

3. The method of claim 1 , wherein before sending the energy saving signal to the terminal device, the method further comprises:
determining whether to send the energy saving signal according to a candidate location of a sending moment of the energy saving signal and information of a first cycle in which the terminal device is currently located, wherein it is determined to send the energy saving signal in response to the candidate location of the sending moment comprising any one of following cases:
the candidate location of the sending moment is equal to an integer multiple of a time length of the Y first cycles; or
the candidate location of the sending moment is equal to an integer multiple of a time length of the maximum N DRX cycles; or
the candidate location of the sending moment is equal to an integer multiple of a time length of the maximum K first cycles; or
the candidate location of the sending moment is located in a time window of an integer multiple of a time length of the Y first cycles; or
the candidate location of the sending moment is located in a time window of an integer multiple of a time length of the maximum K first cycles; or
the candidate location of the sending moment is located in a time window of an integer multiple of a time length of the maximum N DRX cycles; or
the candidate location of the sending moment is equal to an integer multiple of a time length of the Y first cycles, and the candidate location of the sending moment is located in a time window before an activation period of an integer multiple of the time length of the Y first cycles; or
the candidate location of the sending moment is equal to an integer multiple of a time length of the maximum K first cycles, and the candidate location of the sending moment is located in a time window before an activation period of an integer multiple of the time length of the maximum K first cycles; or
the candidate location of the sending moment is equal to an integer multiple of a time length of the maximum N DRX cycles, and the candidate location of the sending moment is located in a time window before an activation period of an integer multiple of the time length of the maximum N DRX cycles; or
the candidate location of the sending moment is located in an overlapping part of an activation period of at least one first cycle in which the terminal device is currently located, and a time window before an activation period of at least one subsequent first cycle and/or second cycle of the terminal device;
wherein before sending the energy saving signal to the terminal device, the method further comprises:
sending a time offset or a maximum time offset corresponding to at least one energy saving signal to the terminal device, wherein the time offset and the maximum time offset are pre-configured by the base station for the terminal device, the time offset and the maximum time offset are both integers greater than or equal to 0, the time offset and the maximum time offset are statically configured, semi-statically configured, dynamically configured or pre-defined, or the time offset and the maximum time offset are configured by high-layer signaling, and the high-layer signaling comprises a RRC signaling or a MAC-CE signaling.

4. The method of claim 3 , wherein it is determined not to send or skip sending the energy saving signal in response to the candidate location of the sending moment comprising any one of following cases:
the candidate location of the sending moment is located at a start moment or an end moment of a first cycle, or in the first cycle; or
the candidate location of the sending moment is outside a time window before an activation period of a first cycle; or
the candidate location of the sending moment is located in a first cycle, and a next DRX cycle indicated by the energy saving signal is a second cycle; or
the candidate location of the sending moment is located in an overlapping part of an activation period of a first cycle in which the terminal device is currently located, and a time window before an activation period of a next DRX cycle of the terminal device, and the next DRX cycle is a first cycle or second cycle.

5. The method of claim 3 , wherein the sending the energy saving signal to the terminal device, comprises:
sending the energy saving signal to the terminal device in response to determining that the candidate location of the sending moment of the energy saving signal is located in any time window as follows;
wherein the time window comprises:
a time window of a start point and an end point, the start point is a first time offset before an activation period of a current DRX cycle, and the end point is a start moment of the activation period of the current DRX cycle, wherein the current DRX cycle is the first cycle or second cycle; or
a time window of a start point and an end point, the start part is a first time offset before an activation period of the current

Assignees

• Datang mobile communications equipment co ltd

Inventors

• Yang Meiying
• Wang Jiaqing
• Luo Chen
• Zhao Zheng

Classifications

• H04W52/0274

  by switching on or off the equipment or parts thereof · CPC title

• H04W52/0235 Primary

  where the received signal is a power saving command · CPC title

• H04W72/231

  the control data signalling from the layers above the physical layer, e.g. RRC or MAC-CE signalling · CPC title

• Y02D30/70

  in wireless communication networks · CPC title

• H04W76/28 Primary

  Discontinuous transmission [DTX]; Discontinuous reception [DRX] · CPC title