Abstract: A method and apparatus are described for supporting a two-stage device-to-device (D2D) discovery using a D2D interworking function (IWF). A D2D IWF component may be configured to perform mapping between an application running on an application server and a third generation partnership project (3GPP) network, and provide a set of application programming interfaces (APIs) to allow discovery to be provided as a service to D2D applications. An application identifier may be mapped to a 3GPP identifier. Further, a method and apparatus are described for performing client-server discovery. A first wireless transmit/receive unit (WTRU) may be configured for a listen-only operation, and a second WTRU may be configured to transmit beacons. The first and second WTRUs may perform a radio access network (RAN) discovery procedure at an access stratum (AS) layer. A method and apparatus for performing charging for D2D service using a D2D IWF are also described.

Abstract: Described herein are methods and systems associated with viewing condition adaption of multimedia content. A method for receiving multimedia content with a device from a network may include determining a viewing parameter, transmitting a request for the multimedia content to the network, whereby the request may be based on the viewing parameter, and receiving the multimedia content from the network, whereby the multimedia content may be processed at a rate according to the viewing parameter. The viewing parameter may include at least one of: a user viewing parameter, a device viewing parameter, or a content viewing parameter. The method may further include receiving a multimedia presentation description (MPD) file from the network. The MPD file may include information relating to the rate of the multimedia content and information relating to the rate may include a descriptor relating to the viewing parameter, whereby the descriptor may be required or optional.

Abstract: A method, a wireless transmit/receive unit (WTRU), and a base station are disclosed. The WTRU comprises a receiver, a transmitter, and a processor. The WTRU receives at least one radio resource control (RRC) message indicating an uplink resource for the WTRU and receives grants over first channels associated with the indicated uplink resource. The WTRU transmits uplink data using the indicated uplink resource based on the received grants, and, based on a trigger, deactivates the indicated uplink resource and to stop the reception of grants over the first channels associated with the indicated uplink resource and flush hybrid automatic repeat request (HARQ) buffers associated with the indicated uplink resource. The base station is configured to communicate with the WTRU.

Abstract: A method and apparatus for power control for distributed wireless communication is disclosed including one or more power control loops associated with a wireless transmit/receive unit (WTRU). Each power control loop may include open loop power control or closed loop power control. A multi-phase power control method is also disclosed with each phase representing a different time interval and a WTRU sends transmissions at different power levels to different set of node-Bs or relay stations during different phases to optimize communications.

Abstract: A method and a wireless transmit/receive unit (WTRU) are disclosed. The WTRU comprises a receiver, a transmitter, and a processor. The WTRU receives a system information block (SIB) including a parameter indicating a number of transmissions for a random access message and a parameter indicating transmission duration information for the random access message. The WTRU transmits a random access preamble and a random access message, wherein the random access message is transmitted for a duration indicated by the parameter indicating transmission duration information for the random access message. The WTRU retransmits the random access message, wherein the random access message is retransmitted a number of times indicated by the parameter indicating the number of transmissions for the random access message and for the duration indicated by the parameter indicating transmission duration information for the random access message.

Abstract: Method and apparatus for reporting feedback information are disclosed. A wireless transmit/receive unit (WTRU) may receive configuration information indicating a plurality of downlink carriers and indicating a plurality of physical control channel resources for feedback. Further, the WTRU may receive a control signal indicating a downlink transmission for reception on one of the plurality of downlink carriers. The WTRU may receive the downlink transmission on the one of the plurality of downlink carriers. The WTRU may transmit feedback for the downlink transmission using one of the plurality of physical control channel resources. The one of the plurality of physical control channel resources may be selected from the plurality of physical control channel resources based on the control signal. In an example, the configuration information may indicate a first uplink carrier and a second uplink carrier for WTRU transmissions. The first uplink carrier may be a time division duplex (TDD) carrier.

Abstract: A method and system for improving responsiveness in exchanging management and control frames in a wireless local area network are disclosed. An initiator sends a frame (action frame, management frame, CSI frame, control frame, or data frame) to a responder. Upon correctly receiving the frame, the responder sends a response frame to the initiator instead of directly sending an acknowledgement (ACK) packet. The responder preferably accesses the wireless medium to send the response frame in a short inter-frame spacing (SIFS). With this scheme, a long delay associated with having to contend for the wireless medium to send the response frame is avoided and therefore, the responsiveness and timeliness of the feedback mechanism is significantly enhanced. The response frame may be piggybacked on or aggregated with another packet.

Abstract: Method and apparatus for reporting feedback information are disclosed. A wireless transmit/receive unit (WTRU) may receive a first control message including both information indicating a first allocation of resources on a first downlink transmission for a first downlink carrier and a first indication of resources for feedback corresponding to the first downlink transmission. Further, the first indication of resources for feedback may include at least one orthogonal frequency division multiplex (OFDM) symbol and at least one subcarrier. Moreover, the WTRU may receive the first downlink transmission in the first allocation of resources on the first downlink carrier. Also, the WTRU may derive acknowledgement/negative acknowledgement (ACK/NACK) feedback corresponding to the first downlink transmission. Additionally, the WTRU may transmit the derived ACK/NACK feedback in the at least one OFDM symbol and on the at least one subcarrier, based on the first indication of resources for feedback.

Abstract: Systems and methods for enabling proximity services to be delivered as part of an application service and/or for providing tailored services and/or a differential quality of service (QoS) to a flow may be disclosed. For example, a temporary service name between an application and a server such as a D2D server may be established such that a UE and/or network may execute such a service at a later time without later involvement by the application and/or without exchanging credentials for the application with the network and vice versa.

Abstract: A method and apparatus for implementing spatial processing with unequal modulation and coding schemes (MCSs) or stream-dependent MCSs are disclosed. Input data may be parsed into a plurality of data streams, and spatial processing is performed on the data streams to generate a plurality of spatial streams. An MCS for each data stream is selected independently. The spatial streams are transmitted via multiple transmit antennas. At least one of the techniques of space time block coding (STBC), space frequency block coding (SFBC), quasi-orthogonal Alamouti coding, time reversed space time block coding, linear spatial processing and cyclic delay diversity (CDD) may be performed on the data/spatial streams. An antennal mapping matrix may then be applied to the spatial streams. The spatial streams are transmitted via multiple transmit antennas. The MCS for each data stream may be determined based on a signal-to-noise ratio of each spatial stream associated with the data stream.

Abstract: A method and system for improving responsiveness in exchanging management and control frames in a wireless local area network are disclosed. An initiator sends a frame (action frame, management frame, CSI frame, control frame, or data frame) to a responder. Upon correctly receiving the frame, the responder sends a response frame to the initiator instead of directly sending an acknowledgement (ACK) packet. The responder preferably accesses the wireless medium to send the response frame in a short inter-frame spacing (SIFS). With this scheme, a long delay associated with having to contend for the wireless medium to send the response frame is avoided and therefore, the responsiveness and timeliness of the feedback mechanism is significantly enhanced. The response frame may be piggybacked on or aggregated with another packet.

Abstract: A method and an apparatus is provided for transmitting uplink data on uplink resources. The method and apparatus includes receiving a radio resource control (RRC) message indicating uplink resources for wireless transmit/receive unit (WTRU) and medium access control (MAC) timer information, transmitting uplink data based on the indicated uplink resources, and deactivating the indicated uplink resources in response to a MAC timer expiring, wherein the MAC timer is configured based on the MAC timer information.

Abstract: Described herein are methods and systems associated with viewing condition adaption of multimedia content. A method for receiving multimedia content with a device from a network may include determining a viewing parameter, transmitting a request for the multimedia content to the network, whereby the request may be based on the viewing parameter, and receiving the multimedia content from the network, whereby the multimedia content may be processed at a rate according to the viewing parameter. The viewing parameter may include at least one of: a user viewing parameter, a device viewing parameter, or a content viewing parameter. The method may further include receiving a multimedia presentation description (MPD) file from the network. The MPD file may include information relating to the rate of the multimedia content and information relating to the rate may include a descriptor relating to the viewing parameter, whereby the descriptor may be required or optional.

Abstract: A method and a wireless transmit/receive unit (WTRU) are disclosed. The WTRU comprises a receiver, a transmitter, and a processor. The WTRU receives a system information block (SIB) including a parameter indicating a number of transmissions for a random access message and a parameter indicating transmission duration information for the random access message. The WTRU transmits a random access preamble and a random access message, wherein the random access message is transmitted for a duration indicated by the parameter indicating transmission duration information for the random access message. The WTRU retransmits the random access message, wherein the random access message is retransmitted a number of times indicated by the parameter indicating the number of transmissions for the random access message and for the duration indicated by the parameter indicating transmission duration information for the random access message.

Abstract: Method and apparatus for reporting feedback information are disclosed. A wireless transmit/receive unit (WTRU) may receive a first control message including both information indicating a first allocation of resources on a first downlink transmission for a first downlink carrier and a first indication of resources for feedback corresponding to the first downlink transmission. Further, the first indication of resources for feedback may include at least one orthogonal frequency division multiplex (OFDM) symbol and at least one subcarrier. Moreover, the WTRU may receive the first downlink transmission in the first allocation of resources on the first downlink carrier. Also, the WTRU may derive acknowledgement/negative acknowledgement (ACK/NACK) feedback corresponding to the first downlink transmission. Additionally, the WTRU may transmit the derived ACK/NACK feedback in the at least one OFDM symbol and on the at least one subcarrier, based on the first indication of resources for feedback.

Abstract: A method and apparatus for establishing peer-to-peer communication in a wireless network is described. A wireless transmit/receive unit (WTRU) may receive configuration information comprising periodic resources comprising time and subcarrier resources from a base station of a wireless network. The time and subcarrier resources may be used in discovery of other WTRUs. The WTRU is further configured to transmit an identification in the allocated resources and to transmit a synchronization signal to a peer WTRU for timing synchronization of the peer WTRU.

Abstract: Method and apparatus for reporting feedback information are disclosed. A wireless transmit/receive unit (WTRU) may receive an allocation message which indicates an allocation of downlink resources for a downlink transmission and an allocation of a first uplink control channel. Further, the indicated allocation of the first uplink control channel may indicate a starting symbol for the first uplink control channel and subcarriers for the first uplink control channel. Also, the WTRU may receive the downlink transmission on a downlink carrier in the indicated allocation of downlink resources for the downlink transmission. Moreover, the WTRU may transmit a plurality of uplink control channels carrying hybrid automatic repeat request (HARQ) acknowledgment/negative-acknowledgement (ACK/NACK) information for the downlink transmission and other control information. In addition, the plurality of uplink control channels may include the first uplink control channel.

Abstract: A method and apparatus are described for supporting a two-stage device-to-device (D2D) discovery using a D2D interworking function (IWF). A D2D IWF component may be configured to perform mapping between an application running on an application server and a third generation partnership project (3GPP) network, and provide a set of application programming interfaces (APIs) to allow discovery to be provided as a service to D2D applications. An application identifier may be mapped to a 3GPP identifier. Further, a method and apparatus are described for performing client-server discovery. A first wireless transmit/receive unit (WTRU) may be configured for a listen-only operation, and a second WTRU may be configured to transmit beacons. The first and second WTRUs may perform a radio access network (RAN) discovery procedure at an access stratum (AS) layer. A method and apparatus for performing charging for D2D service using a D2D IWF are also described.

Abstract: A method and apparatus for implementing spatial processing with unequal modulation and coding schemes (MCSs) or stream-dependent MCSs are disclosed. Input data may be parsed into a plurality of data streams, and spatial processing is performed on the data streams to generate a plurality of spatial streams. An MCS for each data stream is selected independently. The spatial streams are transmitted via multiple transmit antennas. At least one of the techniques of space time block coding (STBC), space frequency block coding (SFBC), quasi-orthogonal Alamouti coding, time reversed space time block coding, linear spatial processing and cyclic delay diversity (CDD) may be performed on the data/spatial streams. An antennal mapping matrix may then be applied to the spatial streams. The spatial streams are transmitted via multiple transmit antennas. The MCS for each data stream may be determined based on a signal-to-noise ratio of each spatial stream associated with the data stream.

Abstract: The present invention is related to a method and apparatus for implementing space frequency block coding (SFBC) in an orthogonal frequency division multiplexing (OFDM) wireless communication system. A wireless transmit/receive unit (WTRU) including a transceiver and a processor is configured to receive, via the transceiver, an orthogonal frequency division multiplexing (OFDM) signal, wherein the OFDM signal comprises a channel coded data stream that was space frequency block coding (SFBC) encoded such that the SFBC encoding was performed using a plurality of pairs of OFDM sub-carriers. The processor is further configured to decode the OFDM signal.