Method and apparatus and device for indicating reconfigurable intelligent surface (RIS) working mode

Patent metadata

Field	Value
Publication number	US-12531600-B2
Application number	US-202318139935-A
Country	US
Kind code	B2
Filing date	Apr 26, 2023
Priority date	Nov 6, 2020
Publication date	Jan 20, 2026
Grant date	Jan 20, 2026

Abstract

A working mode indicating method and apparatus and a device are provided. The method includes: receiving first information sent by a network side device, where the first information indicates an RIS working mode or a relay working mode.

First claim

The invention claimed is:

1 . A working mode indicating method, performed by a first device, wherein the first device is a terminal, or the first device is a Reconfigurable Intelligent Surface (RIS) node or a relay node, and the method comprises:
receiving first information sent by a network side device, wherein the first information indicates an RIS working mode or a relay working mode, wherein the RIS working mode or the relay working mode is an RIS working mode or a relay working mode on at least a part of time units in one cycle or multiple cycles.

2 . The method according to claim 1 , wherein the first device is an RIS or a relay node, and the method further comprises:
updating the working mode according to the first information, or wherein the first device is a terminal, and the method further comprises: performing corresponding transmission according to the RIS working mode or relay working mode indicated by the first information.

3 . The method according to claim 2 , wherein the performing corresponding transmission according to the RIS working mode or relay working mode indicated by the first information comprises one of the following:
performing a two-step random access process or a four-step random access process according to the RIS working mode or the relay working mode indicated by the first information; performing uplink data or downlink data transmission according to the RIS working mode or the relay working mode indicated by the first information; or performing a Hybrid Automatic Repeat reQuest (HARQ) process according to the RIS working mode or the relay working mode indicated by the first information, wherein the performing a four-step random access process according to the RIS working mode or the relay working mode indicated by the first information comprises: determining an index of a target Synchronization Signal Block (SSB); sending message 1 at a first moment, wherein an RIS working mode or a relay working mode at the first moment is the same as an RIS working mode or a relay working mode corresponding to a moment of the target SSB, and the first moment corresponds to a random access occasion associated with an index of the target SSB; and listening to message 2 at a second moment after the terminal sends message 1, wherein an RIS working mode or a relay working mode at the second moment is the same as an RIS working mode or a relay working mode corresponding to a moment of message 1, wherein the performing a two-step random access process according to the RIS working mode or the relay working mode indicated by the first information comprises: determining an index of a target SSB; sending a preamble of message A at a fifth moment, wherein an RIS working mode or a relay working mode at the fifth moment is the same as an RIS working mode or a relay working mode corresponding to a moment of the target SSB, and the fifth moment corresponds to a random access occasion associated with an index of the target SSB; sending message A at a sixth moment, wherein an RIS working mode or a relay working mode at the sixth moment is the same as an RIS working mode or a relay working mode corresponding to a moment of the target SSB; and listening to message B at a seventh moment after message A is sent, wherein an RIS working mode or a relay working mode at the seventh moment is the same as an RIS working mode or a relay working mode corresponding to a moment of message A, wherein the performing a HARQ process according to the RIS working mode or the relay working mode indicated by the first information comprises: sending, at a ninth moment, an acknowledgment or a negative acknowledgment corresponding to a first channel, wherein an RIS working mode or a relay working mode at the ninth moment is the same as an RIS working mode or a relay working mode at a moment when the first channel is transmitted, and wherein the first channel is a physical downlink control channel or a physical downlink shared channel.

4 . The method according to claim 3 , wherein the performing uplink data or downlink data transmission according to the RIS working mode or the relay working mode indicated by the first information comprises:
receiving a fourth message; determining a target SSB index; and receiving downlink data or sending uplink data at an eighth moment, wherein the eighth moment belongs to a time resource that is used for receiving downlink data or sending uplink data and that is indicated by the fourth information, and an RIS working mode or a relay working mode at the eighth moment is the same as an RIS working mode or a relay working mode at a moment of the index of the target SSB.

5 . The method according to claim 1 , wherein the first information is further used to indicate an uplink configuration or a downlink configuration corresponding to the RIS working mode or the relay working mode.

6 . The method according to claim 1 , wherein types of the RIS working mode or the relay working mode comprise: a definite working mode and a flexible working mode.

7 . The method according to claim 6 , further comprising:
when the first information indicates that the type of the RIS working mode or the relay working mode is a flexible working mode, receiving second information, wherein the second information indicates that the RIS working mode or the relay working mode is a first working mode among definite working modes, wherein the second information is layer 1 signaling.

8 . The method according to claim 1 , wherein the RIS working mode or the relay working mode is associated with at least one of the following:
beam pointing of a reflected signal or a refracted signal of an RIS or a relay; a beamforming mode of the reflected signal or the refracted signal of the RIS or the relay; a polarization manner of the reflected signal or the refracted signal of the RIS or the relay; or an Orbital Angular Momentum (OAM) mode of the reflected signal or the refracted signal of the RIS or the relay.

9 . The method according to claim 1 , wherein:
when the RIS working mode or the relay working mode is the RIS working mode or the relay working mode on at least a part of time units in one cycle, a number of time units with a same RIS working mode or relay working mode in the one cycle is greater than 1; and when the RIS working mode or the relay working mode is the RIS working mode or the relay working mode on at least a part of time units in multiple cycles, a number of time units with a same RIS working mode or relay working mode in each of the multiple cycles is greater than 1.

10 . The method according to claim 1 , wherein the RIS working mode or the relay working mode is quasi-co-located with at least one of the following:
a Synchronization Signal Block (SSB), a Channel State Information Reference Signal (CSI-RS), a Tracking Reference Signal (TRS), a DeModulation Reference Signal (DMRS), or a Positioning Reference Signal (PRS) sent by the network side device.

11 . A working mode indicating method, performed by a network side device, comprising:
sending first information, wherein the first information indicates a Reconfigurable Intelligent Surface (RIS) working mode or a relay working mode, wherein the RIS working mode or the relay working mode is an RIS working mode or a relay working mode on at least a part of time units in one cycle or multiple cycles.

12 . The method according to claim 11 , wherein types of the RIS working mode or the relay working mode comprise: a definite working mode and an uncertain working mode.

13 . The method according to claim 11 , wherein the RIS working mode or the relay working mode is as

Assignees

• Vivo Mobile Communication Co Ltd

Inventors

• Jiang Dajie
• Yang Kun

Classifications

• H04L5/0048

  Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091) · CPC title

• H04B1/401

  for selecting or indicating operating mode · CPC title

• H01Q15/0086

  said selective devices having materials with a synthesized negative refractive index, e.g. metamaterials or left-handed materials · CPC title

• H01Q15/002

  said selective devices being reconfigurable or tunable, e.g. using switches or diodes · CPC title

• H01Q3/46

  Active lenses or reflecting arrays · CPC title