A base station may comprise circuitry configured to establish a plurality of wireless links with a mobile device and a memory configured to store a plurality of media access control (MAC) addresses associated with the plurality of wireless links. The base station may comprise one or more receivers configured to receive data units over the plurality of wireless links. A first data unit of the data units may span a plurality of channels. The first data unit may comprise a header portion duplicated along at least some of the plurality of channels and the first data unit may comprise a data portion which is not duplicated along the plurality of channels. The header portion duplicated along at least some of the plurality of channels may consist of bits of a release version dependent portion and bits of a portion which is non-release version dependent.

A base station may comprise circuitry configured to establish a plurality of wireless links with a mobile device and a memory configured to store a plurality of media access control (MAC) addresses associated with the plurality of wireless links. The base station may comprise one or more receivers configured to receive data units over the plurality of wireless links. A first data unit of the data units may span a plurality of channels. The first data unit may comprise a header portion duplicated along at least some of the plurality of channels and the first data unit may comprise a data portion which is not duplicated along the plurality of channels. The header portion duplicated along at least some of the plurality of channels may consist of bits of a release version dependent portion and bits of a portion which is non-release version dependent.

The present disclosure provides a power control method in device to device (D2D) communication and a user equipment for performing the power control method. The method includes computing a power value of device to device (D2D) transmission of a user equipment performing D2D communication in a subframe in a serving cell, based on a power control adjustment state of a Long Term Evolution (LTE) wide area network (WAN) uplink channel of the user equipment and an offset or a ratio indicated by a transmit power control (TPC) command indicated in D2D grant or downlink control information (DCI) format 3/3A.

The present disclosure provides a power control method in device to device (D2D) communication and a user equipment for performing the power control method. The method includes computing a power value of device to device (D2D) transmission of a user equipment performing D2D communication in a subframe in a serving cell, based on a power control adjustment state of a Long Term Evolution (LTE) wide area network (WAN) uplink channel of the user equipment and an offset or a ratio indicated by a transmit power control (TPC) command indicated in D2D grant or downlink control information (DCI) format 3/3A.

A method for communication on multiple links is performed by a terminal control device. The method comprises: generating a first message frame; and broadcasting the first message frame on a first link, the first message frame comprising information related to transmission power corresponding to the multiple links.

A method for communication on multiple links is performed by a terminal control device. The method comprises: generating a first message frame; and broadcasting the first message frame on a first link, the first message frame comprising information related to transmission power corresponding to the multiple links.

A communication apparatus includes: signal generation circuitry which, in operation, generates a control signal including a target reception power value regarding a target value of a reception power for the communication apparatus to receive an uplink (UL) response frame transmitted by each of one or more terminal stations, the control signal being a trigger frame that solicits transmission of the UL response frame from each of the one or more terminal stations; and transmission circuitry which, in operation, transmits the generated signal.

A communication apparatus includes: signal generation circuitry which, in operation, generates a control signal including a target reception power value regarding a target value of a reception power for the communication apparatus to receive an uplink (UL) response frame transmitted by each of one or more terminal stations, the control signal being a trigger frame that solicits transmission of the UL response frame from each of the one or more terminal stations; and transmission circuitry which, in operation, transmits the generated signal.

A base station triggers transmission of sounding reference signals (SRS) from one or multiple user equipments (UEs) on one or multiple cells and a UE determines a power, a time instance, and other parameters for SRS transmissions in response to the triggering. An SRS transmission can be on a cell where a UE is not configured to transmit data or control information.

A base station triggers transmission of sounding reference signals (SRS) from one or multiple user equipments (UEs) on one or multiple cells and a UE determines a power, a time instance, and other parameters for SRS transmissions in response to the triggering. An SRS transmission can be on a cell where a UE is not configured to transmit data or control information.