CN-121986511-A - Relay device, wireless system, and relay method

Abstract

The relay device is provided with a control unit for setting switching between a first mode for sensing a sensing area and a second mode for transmitting a signal from a transmitting device to a receiving device, and an antenna unit for transmitting a signal based on the mode set by the control unit.

Inventors

• ONODA TAKANOBU
• KURITA DAISUKE
• HARADA HIROYASU
• WANG FAN
• HOU XIAOLIN
• LI XIANG
• SUN WEIQI
• WANG JING
• CHEN LAN

Assignees

• 株式会社NTT都科摩

Dates

Publication Date

20260505

Application Date

20231218

Claims (6)

1. 1. A relay device is provided with: a control unit for setting a switch between a first mode for sensing the sensing area and a second mode for transmitting signals from the transmitting device to the receiving device, and And the antenna unit is used for forwarding signals based on the mode set by the control unit.
2. 2. The relay device according to claim 1, wherein, The control unit performs the setting based on an instruction from the transmitting device.
3. 3. The relay device according to claim 2, wherein, The indication is made periodically.
4. 4. The relay device according to claim 1, wherein, The control unit performs setting to switch to the first mode based on a request from a processing device that receives the signal and performs processing related to perception in the first mode.
5. 5. A wireless system comprising a transmitter and a relay, The transmitting device includes a transmitting unit configured to transmit a signal to the relay device, The relay device is provided with: a control unit for setting a switch between a first mode for sensing the sensing area and a second mode for transmitting signals from the transmitting device to the receiving device, and And the antenna unit is used for forwarding the signals based on the mode set by the control unit.
6. 6. A relay method, wherein, The relay device performs: A first mode for sensing the sensing area and a second mode for transmitting a signal from the transmitting device to the receiving device are set, Based on the set mode, the signal is forwarded.

Description

Relay device, wireless system, and relay method Technical Field The present disclosure relates to a relay apparatus, a wireless system, and a relay method. Background The third Generation partnership project (3 rd Generation Partnership Project (3 GPP)) standardizes the fifth Generation mobile communication system (5 th Generation mobile communication system, also called 5G, new Radio (NR), or Next Generation (NG)), and further advances the standardization of the Next Generation called Beyond 5G (Beyond 5G), 5G Evolution (5G Evolution), or 6G. In NR, in addition to introduction of a User terminal (UE) or simply a terminal and a radio base station (also simply a base station), in order to achieve higher data rates and expansion of a wide range of coverage, introduction of a radio apparatus such as RIS (reconfigurable intelligent surface (Reconfigurable Intelligent Surface)) is being studied (for example, refer to patent document 1). Further, in NR, wireless devices such as RIS are being studied to assist sensing. Prior art literature Patent literature Patent document 1 International publication No. 2022/151016 Disclosure of Invention However, there is room for research on methods of efficiently assisting the perception of the introduced wireless devices. An aspect of the present disclosure provides a relay device, a wireless system, and a relay method that can efficiently assist in sensing. Means for solving the problems The relay device according to one aspect of the present disclosure includes a control unit configured to switch between a first mode in which a sensing area is sensed and a second mode in which a signal is transmitted from a transmitting device to a receiving device, and an antenna unit configured to forward the signal based on the mode set by the control unit. Drawings Fig. 1 is a diagram illustrating an example of a wireless communication system according to an embodiment of the present disclosure. Fig. 2A is a diagram showing an example of a far-end user in the high-band domain. Fig. 2B is a diagram showing an example of a user outside the viewing distance in the high-band domain. Fig. 3A is a diagram showing an example of communication using the NCR configuration. Fig. 3B is a diagram showing an example of communication using RIS. FIG. 4 is a diagram showing an example of a system architecture including a RIS. Fig. 5 is a diagram showing an example of near field (NEAR FIELD (NF)) and Far Field (FF)) of the RIS. Fig. 6A is a diagram showing an example of DFT-based Beamforming (BF). Fig. 6B is a diagram showing an example of beam focusing accompanied by an optimal phase. Fig. 6C is a diagram showing an example of beam focusing with a steering vector of a Near Field (NF). Fig. 7 is a diagram showing an example of transfer of SSB to which RIS is applied. Fig. 8 is a diagram showing an example of a precoder according to table example 1-1-1. Fig. 9 is a diagram showing an example of the reference point. Fig. 10 is a diagram showing an example of a precoder according to table example 1-1-2. Fig. 11 is a diagram showing an example of a uniform grid (grid) in orthogonal coordinates. Fig. 12 is a diagram showing an example of active imaging (ACTIVE IMAGING) and passive imaging (PASSIVE IMAGING). Fig. 13 is a diagram showing the kinds of active imaging and passive imaging. Fig. 14 is a diagram showing comparison of active imaging. Fig. 15 is a diagram showing an example of the structure of the phased array system (PHASED ARRAY SYSTEM). Fig. 16 is a diagram showing an example of the structure of SAR. Fig. 17 is a diagram showing an outline of the RIS-assisted wireless sensor system. FIG. 18 is a diagram showing an example of a system model of the RIS-assisted wireless imaging system. Fig. 19 is a diagram showing an example of the back projection algorithm. Fig. 20A is a diagram showing an example of a system in which reception and transmission are separated. Fig. 20B is a diagram showing an example of a system for integrating reception and transmission. Fig. 21 is a graph comparing characteristics of a reception and transmission separated system and an integrated system. Fig. 22A is a diagram showing an example of mesh division. Fig. 22B is a diagram showing an example of mesh division. Fig. 23 is a diagram showing an example of the result of imaging in mesh division. Fig. 24A is a diagram showing an example of switching of modes based on an instruction of periodicity of a system including an RIS. Fig. 24B is a diagram showing an example of switching of modes based on a trigger-based instruction to a system including an RIS. Fig. 25 is a diagram showing an example of wireless imaging. Fig. 26 is a diagram showing a relationship between the number of quantized bits of the phase shift and the imaging result. Fig. 27 is a diagram showing the results of imaging at different focal planes. Fig. 28 is a table showing an example of pore size. Fig. 29A is a diagram showing an example of an outline of a syste