An object of the present invention is to protect the communication of a legacy terminal while achieving favorable communication rendering the CCA level of a CCA-variable terminal apparatus variable in an environment, premised on CSMA/CA, where the CCA-variable terminal apparatus and a legacy terminal apparatus coexist. A terminal apparatus for performing wireless communication with a base station apparatus includes: a receiving unit that receives a radio signal transmitted from the base station apparatus; a CCA-variable channel information processing unit that acquires first CCA-variable channel instruction information contained in the radio signal and containing information regarding a range of a CCA level that is available on a certain channel and that is used for clear channel assessment; and a higher layer unit that selects, according to the first CCA-variable channel instruction information, a channel to be used.

Terminal apparatus and base station apparatus

A radio network sends downlink signaling to a user equipment (UE) that triggers an enhanced uplink beam selection protocol, based on quality of the UE's uplink signaling the network receives according to a basic uplink beam selection protocol. In response the UE transmits pre-defined signaling such as uplink beam references signals (U-BRS) with uplink beams according to the downlink signaling. The network measures and selects one or more of those uplink beams for the UE to use for sending uplink data, and notifies this selection to the UE. In various embodiments the basic uplink beam selection protocol is based on uplink-downlink reciprocity, the downlink triggering signaling is dynamic and further selects a subset of uplink beams, and multiple UEs can be triggered in common signaling where blind decoding by the UEs is enabled via a scrambling ID for this enhanced uplink beam selection protocol purpose.

Enhanced uplink beam selection for massive mimo system

Disclosed is a method for operating a communication node supporting a low power mode in a wireless LAN. A method for operating a station, which includes a PCR and a WURx, comprises the steps of: allowing the WURx, which operates in a wake-up state, to receive a wake-up packet from an access point; transitioning an operating state of the PCR from a sleep state to the wake-up state when the wake-up packet is received; allowing the PCR, which operates in the wake-up state, to receive a data frame from an access point; and allowing the PCR to transmit, to the access point, a response to the data frame.

Method for operating communication node supporting low power mode in wireless LAN

A method for communications station sleep mode recovery includes receiving, by a communications station, a first wakeup identifier (WUID) from a first access point (AP), obtaining, by the communications station, a second WUID, entering, by the communications station, a sleep mode where a radio communications module (RCM) of the communications station is placed in a reduced power state, wherein a wakeup receiver of the communications station is in an active state when the RCM is in the reduced power state, and detecting, by the wakeup receiver of the communications station, one of a first wakeup packet (WUP) including the first WUID or a second WUP including the second WUID while the RCM is in the reduced power state, and based thereon, transitioning the RCM from the reduced power state to the active state.

System and method for recovering a communications station in sleep mode

Various aspects of the disclosure relate to distributed multiple-input multiple-output (MIMO) communication such as coordinated beamforming or Joint MIMO. In some aspects, distributed MIMO is used to support communication in a cluster of wireless nodes (e.g., access points). A distributed MIMO scheduling scheme as taught herein is used to schedule the wireless nodes (e.g., access points and/or stations) operating within the cluster. For example, selected stations may be triggered to communicate with respective access points.

Triggering distributed MIMO communication in a wireless node cluster

To increase a use efficiency of a wireless resource in Sidelink V2P communication, a portable P-UE (20) receives a signal transmitted from another UE, specifies a first determination subject signal received from a V-UE (10) provided to a vehicle, determines whether there is the first determination subject signal which satisfies a predetermined condition or not among the reception signals, transmits a signal to the V-UE (10) in the case where there is no first determination subject signal which satisfies the predetermined condition, and suppresses or stops the transmission of the signal to the V-UE (10) in the case where there is the first determination subject signal which satisfies the predetermined condition.

Wireless communication device and wireless communication method

Disclosed is a feature for reducing the signaling amount in a vehicle wireless communication system. An embodiment of the present invention pertains to a server that communicatively connects to vehicles via a base station, wherein the server has: a notification area setting unit that sets a notification area for causing a vehicle to issue notification of vehicle information; and a communication control unit for transmitting, to the vehicles, area information indicating the set notification area, and receiving the vehicle information from a vehicle located in the notification area.

Server and automotive device

This user equipment includes a notification unit which, when a wireless signal has been received from another user equipment, transmits, to a network device, terminal information that can include location information on the user equipment, and at least one among an identifier for identifying the other user equipment, information for indicating a received wireless resource, or an identifier for identifying a received packet, and that can further include information for indicating a reception state, information for indicating a vehicle type of the user equipment, or information for indicating the reception time of the packet. In addition, when a wireless signal has been transmitted to the other user equipment, the notification unit transmits, to the network device, terminal information which can include location information on the user equipment, and at least one among an identifier for identifying the user equipment, information for indicating a transmitted wireless resource , or an identifier for identifying a transmitted packet, and which can further include information for indicating a transmission time of the packet.

User equipment and network device

This wireless access network (200) receives an uplink signal from a UE (100). The wireless access network (200) acquires, on the basis of the correlation between transmission parameters of the uplink signal and a UE identifier, the UE identifier and cell information specifying a cell (203) which has received an uplink signal. The wireless access network (200) transmits, to a core network (300), cell information and the UE device identifier acquired by the wireless access network (200).

Wireless access network

This communication control device (30) transmits, via a mobile communication network and to a terminal device (200), authentication information (OTP) which varies according to time and which is associated with a wireless base station or a constituent element of a wireless base station. The communication control device (30) receives, via the mobile communication network and from the terminal device (200), authentication information and terminal position information indicating the position of a terminal device (200). The communication control device (30) assesses the validity of terminal position information on the basis of the authentication information and terminal position information received.

Maruko Tomoki

Papers

Wireless communication device and wireless communication method

Server and automotive device

User equipment and network device

Wireless access network

Communication control device and terminal device