US-12621011-B2 - Gain control method and signal amplifier

Abstract

A gain control method for a signal amplifier includes obtaining, by the signal amplifier, target information; determining, by the signal amplifier, a power adjustment parameter of the signal amplifier according to the target information, where the power adjustment parameter includes any one of the following: an amplification multiple-related parameter and a transmit power-related parameter; and adjusting, by the signal amplifier, a power parameter of the signal amplifier according to the power adjustment parameter, where the power parameter includes any one of the following: an amplification multiple and transmit power.

Inventors

• Huan WANG
• Jinhua Liu
• Shuyan PENG

Assignees

• VIVO MOBILE COMMUNICATION CO., LTD.

Dates

Publication Date

20260505

Application Date

20231110

Priority Date

20210511

Claims (20)

1. 1 . A gain control method for a signal amplifier, comprising: obtaining, by the signal amplifier, target information; determining, by the signal amplifier, a power adjustment parameter of the signal amplifier according to the target information, wherein the power adjustment parameter comprises: an amplification multiple-related parameter; and adjusting, by the signal amplifier, a power parameter of the signal amplifier according to the power adjustment parameter, wherein the power parameter comprises: an amplification multiple; wherein the target information comprises: a first indication sent by an upstream node of the signal amplifier, wherein the first indication is used to indicate the power adjustment parameter; and a path loss (PL) parameter from the upstream node to the signal amplifier; wherein the amplification multiple-related parameter comprises G0, alpha, and A, and the amplification multiple is Gain=G0+alpha×PL+A.
2. 2 . The method according to claim 1 , wherein the target information further comprises: transmit power of a mobile termination MT of the signal amplifier.
3. 3 . The method according to claim 2 , wherein an indication type of the first indication comprises at least one of the following: a dynamic indication or a semi-static indication.
4. 4 . The method according to claim 2 , wherein the power adjustment parameter comprises at least one of the following: an amplification multiple of the signal amplifier; an amplification multiple adjustment value of the signal amplifier; an amplification multiple control parameter of the signal amplifier; an amplification multiple control parameter adjustment value of the signal amplifier; transmit power of the signal amplifier; a transmit power adjustment value of the signal amplifier; a transmit power control parameter of the signal amplifier; or a transmit power control parameter adjustment value of the signal amplifier.
5. 5 . The method according to claim 4 , wherein at least one of the following is used to indirectly control the amplification multiple of the signal amplifier: the transmit power adjustment value of the signal amplifier; the transmit power control parameter adjustment value of the signal amplifier; the transmit power control parameter of the signal amplifier; or the transmit power control parameter adjustment value of the signal amplifier.
6. 6 . The method according to claim 4 , wherein the amplification multiple adjustment value of the signal amplifier comprises any one of the following: an adjustment value relative to an amplification multiple configured semi-statically; an adjustment value relative to an amplification multiple before the first indication is received; and an adjustment value relative to an amplification multiple before the first indication received takes effect.
7. 7 . The method according to claim 2 , wherein an effective range of the first indication comprises at least one of the following: taking effect after X time units after the first indication is received; or an effective time of the first indication is before a next first indication takes effect, and X is a positive integer.
8. 8 . The method according to claim 2 , wherein an indication range of the first indication in the effective range comprises at least one of the following: amplification multiple-related parameters associated with N amplification multiple control processes; amplification multiple-related parameters associated with M channels; or amplification multiple-related parameters associated with Y target resources; wherein the target resource comprises: a time domain resource and/or a frequency domain resource; and N, Y, and M are positive integers.
9. 9 . The method according to claim 2 , wherein a carrier of the first indication comprises at least one of the following: cell-specific signaling, UE-specific signaling, or UE group common signaling.
10. 10 . The method according to claim 2 , wherein the path loss parameter comprises a path loss from the upstream node to the signal amplifier; and an amplification multiple of the signal amplifier or transmit power of the signal amplifier is proportional to the path loss.
11. 11 . The method according to claim 10 , wherein the obtaining, by the signal amplifier, the loss parameter comprises: measuring, by the signal amplifier, a downlink path loss according to a downlink signal; or when the signal amplifier has an MT unit, measuring, by the MT unit, the downlink path loss.
12. 12 . The method according to claim 11 , wherein after the adjusting a power parameter of the signal amplifier, the method further comprises: reporting, by the signal amplifier, the power parameter to the upstream node.
13. 13 . The method according to claim 1 , wherein the obtaining, by the signal amplifier, target information comprises: obtaining, by the signal amplifier, the target information from the upstream node of the signal amplifier.
14. 14 . The method according to claim 13 , wherein before the obtaining, by the signal amplifier, target information, the method further comprises: sending, by the signal amplifier, first information to the upstream node; wherein the first information comprises any one of the following: a first power parameter, a path loss parameter between the signal amplifier and the upstream node, a path loss measurement signal between the signal amplifier and the upstream node, and signal strength of an uplink signal measured by the signal amplifier; and the first power parameter comprises any one of the following: a maximum value of the amplification multiple or the transmit power, a minimum value of the amplification multiple or the transmit power, an expected value of the amplification multiple or the transmit power, a difference between the expected value and an actual value of the amplification multiple or the transmit power, and a headroom value of the amplification multiple or the transmit power.
15. 15 . A gain control method for a signal amplifier, comprising: generating, by an upstream network side device, target information; and sending, by the upstream network side device, the target information to the signal amplifier; wherein the target information is used to indicate a power adjustment parameter of the signal amplifier, and the power adjustment parameter comprises: an amplification multiple-related parameter; the power adjustment parameter is used for adjusting a power parameter of the signal amplifier, wherein the power adjustment parameter comprises an amplification multiple; and the target information comprises: a first indication, wherein the first indication is used to indicate the power adjustment parameter; and a path loss (PL) parameter from the upstream network side device to the signal amplifier; wherein the amplification multiple-related parameter comprises G0, alpha, and A, and the amplification multiple is Gain=G0+alpha×PL+A.
16. 16 . The method according to claim 15 , wherein the generating, by an upstream network side device, target information comprises: obtaining, by the upstream network side device, auxiliary information to generate the target information.
17. 17 . The method according to claim 16 , wherein the auxiliary information comprises any one of the following: a first power parameter, a path loss parameter between the signal amplifier and the upstream network side device, a path loss measurement signal between the signal amplifier and the upstream network side device, and signal strength of an uplink signal measured by the signal amplifier.
18. 18 . The method according to claim 16 , wherein when the auxiliary information is the path loss measurement signal between the signal amplifier and the upstream network side device, the generating target information comprises: indicating, by the upstream network side device, the signal amplifier to send the path loss measurement signal and/or transmit power of the measurement signal on a first resource, and measuring the path loss parameter according to the path loss measurement signal and/or the transmit power.
19. 19 . A signal amplifier, comprising a processor, a memory, and a program or instruction stored in the memory and executable on the processor, wherein the program or instruction, when executed by the processor, causes the signal amplifier to perform: obtaining target information; determining a power adjustment parameter of the signal amplifier according to the target information, wherein the power adjustment parameter comprises: an amplification multiple-related parameter; and adjusting a power parameter of the signal amplifier according to the power adjustment parameter, wherein the power parameter comprises: an amplification multiple; wherein the target information comprises: a first indication sent by an upstream node of the signal amplifier, wherein the first indication is used to indicate the power adjustment parameter; and a path loss (PL) parameter from the upstream node to the signal amplifier; wherein the amplification multiple-related parameter comprises G0, alpha, and A, and the amplification multiple is Gain=G0+alpha×PL+A.
20. 20 . A non-transitory computer readable storage medium, wherein a program or instruction is stored on the non-transitory computer readable storage medium, and when the program or instruction is executed by a processor, the steps of the gain control method for a signal amplifier according to claim 1 are implemented.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application is a Bypass Continuation Application of International Patent Application No. PCT/CN2022/091938, filed May 10, 2022, and claims priority to Chinese Patent Application No. 202110512345.5, filed May 11, 2021, the disclosures of which are hereby incorporated by reference in their entireties. BACKGROUND OF THE INVENTION Field of the Invention This application pertains to the field of communication technologies, and specifically relates to a gain control method and apparatus for a signal amplifier, and a network side device. Description of Related Art A signal amplifier is configured to extend a coverage range of a cell. Functions of the signal amplifier mainly include: receiving and amplifying a downlink signal from a base station, so that strength of the signal reaching a UE increases, and amplifying an uplink signal from the UE, so that strength of the uplink signal from the UE to the base station increases. The signal amplifier may receive control from the base station, that is, the base station may control transmit parameters of the amplifier, such as on/off and a transmit beam of the signal amplifier, to improve signal power of the amplifier and reduce interference. As shown in FIG. 1, a network structure includes three network nodes, and an intermediate network node is a signal amplifier, including a mobile termination (MT) and a repeater unit RU (RU). The MT is configured to establish a connection to the base station, and the base station interacts with the signal amplifier by using the MT, so as to indicate a transmission parameter of the MT or the RU of the signal amplifier. However, after a signal amplifier is introduced to a network side device, a coverage range of a cell is affected by a state of a channel from the base station to the signal amplifier. For example, when a link from the base station to the signal amplifier is blocked, the coverage range of the cell is reduced. SUMMARY OF THE INVENTION According to a first aspect, a gain control method for a signal amplifier is provided, where the method is applied to a signal amplifier, and the method includes: obtaining, by the signal amplifier, target information; determining, by the signal amplifier, a power adjustment parameter of the signal amplifier according to the target information, where the power adjustment parameter includes any one of the following: an amplification multiple-related parameter and a transmit power-related parameter; and adjusting, by the signal amplifier, a power parameter of the signal amplifier according to the power adjustment parameter, where the power parameter includes any one of the following: an amplification multiple and transmit power. According to a second aspect, a gain control apparatus for a signal amplifier is provided, where the apparatus includes an obtaining module, a determining module, and an adjustment module, where the obtaining module is configured to obtain target information; the determining module is configured to determine a power adjustment parameter of the signal amplifier according to the target information, where the power adjustment parameter includes any one of the following: an amplification multiple-related parameter and a transmit power-related parameter, where the adjustment module is configured to adjust a power parameter of the signal amplifier according to the power adjustment parameter, and the power parameter includes any one of the following: an amplification multiple and transmit power. According to a third aspect, a gain control method for a signal amplifier is provided, applied to an upstream network side device, and the method includes: generating, by the upstream network side device, target information; and sending, by the upstream network side device, the target information to the signal amplifier; where the target information is used to indicate a power adjustment parameter of the signal amplifier, and the power adjustment parameter includes any one of the following: an amplification multiple-related parameter and a transmit power-related parameter. According to a fourth aspect, a gain control apparatus for a signal amplifier is provided, where the apparatus includes a generation module and a sending module, where the generation module is configured to generate target information; and the sending module is configured to send, to the signal amplifier, the target information generated by the generation module; where the target information is used to indicate a power adjustment parameter of the signal amplifier, and the power adjustment parameter includes any one of the following: an amplification multiple-related parameter and a transmit power-related parameter. According to a fifth aspect, a network side device is provided, where the network side device includes a processor, a memory, and a program or instruction stored in the memory and executable on the processor, and the program or instruction is executed by the pro