Embodiments discloses a communication method, apparatus, and system, and a computer-readable storage medium. The method includes: A first base station sends a coordination request to a second base station, the second base station being a base station other than the first base station; the first base station receives a coordination response, the coordination response including identifiers of M first reflectors, M is an integer greater than 0, the M first reflectors belong to the second base station, the coordination response is sent by the second base station after releasing a control right on the M first reflectors based on the coordination request, the M first reflectors can cover first UE, and the first UE is homed to the first base station; the first base station obtains the control right on the M first reflectors; and the first base station communicates with the first UE by using the M first reflectors.

A method, system and apparatus for reconfigurable intelligent surface-assisted energy-efficient radio access networks using hierarchical reinforcement learning are disclosed. A method in a network node operating as a meta-controller and configured to communicate with a wireless device and a plurality of sub-controllers is provided. The method includes determining a state of the meta-controller including traffic load ratios of the plurality of sub-controllers. The method also includes receiving an extrinsic reward that is based on an energy efficiency of a cell including the plurality of sub-controllers. The method further includes selecting a goal according to a policy, the selected goal being an on/off state of each of the plurality of sub-controllers, the policy being selected to increase the extrinsic reward. The method includes configuring the plurality of controllers with the selected goal and an indication of the policy for selecting the goal.

Embodiments of the present application are related to methods and apparatuses of uplink signal enhancement. An embodiment of the present application provides a user equipment (UE) including: a wireless transceiver, and a processor coupled to the wireless transceiver, wherein the processor is configured to: transmit a signal, which is generated based on at least a re-configurable intelligent surface (RIS) identifier (ID), with the wireless transceiver; and transmit, with the wireless transceiver, a physical random access channel (PRACH) preamble after transmission of the signal.

A computer-implemented method for enabling a base station (BS) to provide configuration commands wirelessly to a reconfigurable intelligence surface (RIS) includes establishing a new codebook for each configuration from a previous set of configurations. The method further includes generating an RIS control message based on embedding amplitude-modulated (AM) signals into Orthogonal Frequency-Division Multiplexing (OFDM) signals using the new codebook and providing the RIS control message to the RIS to control the RIS. The method can be used to optimize and/or allow enhanced decision making for controlling the RIS using the BS. For instance, the method can synchronize its radio scheduler decisions and the optimization of the RIS configuration seamlessly and/or disguise RIS control messages into New Radio OFDM symbols. In some embodiments, machine learning (ML) and/or artificial intelligence (AI) techniques (e.g., a neural network (NN)) can be used.

The terminal information obtaining method includes: receiving a first signal sent by a terminal; and estimating first information of the terminal according to the first signal, the first information including at least one of the following: position information of the terminal, direction information of the terminal, reception beam information corresponding to the terminal, or sending beam information corresponding to the terminal.

A method, apparatus, and system for barring at least one UE from communicating with one or more RISs is disclosed. A base station may determine to bar at least one UE from communicating with one or more RISs of a plurality of RISs. The base station may transmit, to the at least one UE, a barring indication for the one or more RISs. The barring indication may identify the one or more RISs with which the at least one UE is barred from communicating. The UE may determine to refrain from communicating with the one or more RISs based on the barring indication. The UE may communicate with the base station based on the determination to refrain from communicating with the one or more RISs.

A wireless communication method using a large intelligent surface (LIS) is provided. The method includes transmitting preamble signals each with a different transmission time and transmission direction, receiving preamble signals through an LIS through which an incident radio wave is received and reflected and determining a reference angle of incidence for the preamble signals, receiving the preamble signals that are delivered through a multipath from the terminal, transmitting identification information of a preamble signal having the largest reception power among the received preamble signals to the LIS server, and when the preamble signals includes a preamble signal corresponding to the identification information received from the base station, controlling the LIS such that an angle of reflection at which a data service signal transmitted from the base station is reflected by the LIS corresponds to the reference angle of incidence determined for the preamble signal of the identification information.

A system and methods by which a reconfigurable intelligent surface device is dynamically configured to control the reflection of transmissions made between an access point and one or more client devices so as to protect the transmissions from being properly received by an unauthorized device. These methods may be used to maintain data confidentiality, particularly for remote workers. The positions of the access point and client devices are used to configure the reconfigurable intelligent surface device to reflect the transmissions inward and avoid/minimize leakage outside a physical space.

Methods, systems, and devices for wireless communication are described. A first wireless communication device may set parameter(s) corresponding to column(s) of a reconfigurable intelligent surface (RIS) based on a periodic coding sequence. Based on the parameter(s), the first wireless communication device may transmit a first signal to a second wireless communication device in a first direction using a first harmonic frequency, and may transmit a second signal to a third wireless communication device in a second direction using a second harmonic frequency. The second wireless communication device may decode the first signal based on the periodic coding sequence and the first harmonic frequency, and the third wireless communication device may decode the second signal based on periodic coding sequence and the second harmonic frequency. The first wireless communication device may similarly set second parameter(s) of the RIS based on a second periodic coding sequence.

Certain aspects of the present disclosure provide techniques for randomization of reconfigurable intelligent surface (RIS) signals. A method for wireless communication includes determining a random reflection parameter for each of one or more RISs. The random reflection parameter is random over time for the one or more RISs. The method includes applying random values of the random reflection parameter at different times at each of the one or more RISs.