Abstract: A method and apparatus are described for controlling the application of Selected Internet Protocol (IP) traffic offload (SIPTO) or Local IP Access (LIPA) services for a wireless transmit/receive unit (WTRU). The SIPTO and LIPA services may be performed over packet data network (PDN) connections. A user of the WTRU may be prompted to accept or reject the usage of the SIPTO or LIPA services. The user of the WTRU may request switching from SIPTO or LIPA services to non-SIPTO or non-LIPA services.

Abstract: Coordinated P-GW change for SIPTO may be provided. A WTRU may send and/or receive one or more flows via a first PDN connection and via a first P-GW. The WTRU may send an indication to the network that at least one flow of the first PDN connection is available for SIPTO. The indication may include one or more SIPTO preferences. The WTRU may receive a message from a MME. The message may trigger establishment of a second PDN connection via a second P-GW. The WTRU may move, while maintaining the first PDN connection, the at least one flow from the first PDN connection to the second PDN connection. The WTRU may deactivate the first PDN connection when the one or more flows have been moved to the second PDN connection and/or when no information has been received via the first PDN connection after a predetermined duration.

Abstract: Methods and apparatus may be used for selecting power saving mechanisms in a wireless transmit/receive unit (WTRU). For example, a WTRU may support at least power saving mode (PSM) and/or extended discontinuous reception (eDRX) mode. The WTRU may send a request message including parameters associated with the supported power saving mechanisms, such as an active time for PSM and a preferred DRX value for eDRX mode. The WTRU may receive an accept message including at least one selected parameter indicating the power saving mechanism for the WTRU selected by the network (NW). The WTRU may activate the selected power saving mechanism, and may start a validity timer to define the duration of use of the selected power saving mechanism. In another example, a WTRU configured to use eDRX may receive paging signals for system information (SI) change over a prolonged Broadcast Control Channel (BCCH) modification period.

Abstract: Systems, methods, and instrumentalities are disclosed for bearer management in a wireless network using virtual bearers. Systems, methods, and instrumentalities are also disclosed for managing conflicts between an eNB decision to offload a wireless transmit/receive unit (WTRU) to a WLAN and an ANDSF policy. Systems, methods, and instrumentalities are also disclosed for minimization of drive tests (MDT) for WLAN or during an offload to WLAN. Systems, methods, and instrumentalities are also disclosed for signaling capabilities of a WTRU.

Abstract: A sample and hold system, for capturing and reading a sequence of traces of an input signal. The sample and hold system comprising a readout device, a controller, and a sample and hold array of unit cells. The controller is configured for controlling the sample and hold system, such that during an acquisition phase a trace of samples is taken from the input signal in an original sample order and such that the samples are held in the unit cells wherein the samples are assigned to the unit cells in an acquisition order, such that during a consecutive readout phase the samples are read out from the unit cells wherein the order in which the unit cells are read out corresponds with a readout order, and such that the acquisition order and/or the readout order differs from trace to trace.

Abstract: A sample and hold system, for capturing and reading at least one input signal. The system comprises a readout device, a controller, an array of segments comprising a plurality of unit cells and a dummy unit cell, and segment switches between the segments and the readout device. The controller is adapted for controlling the system such that: during an acquisition phase a trace of samples is taken from the input signal and held in the unit cells; during a readout phase the samples in the unit cells or in the dummy unit cells of a segment are read out by readout device; after opening or closing the segment switches the dummy unit cell, is the first cell which is read out by the readout device.

Abstract: Systems, methods, and instrumentalities are disclosed to describe reporting and/or reacting to a mobility event. A wireless transmit/receive unit (WTRU) may comprise a processor configured, at least in part, to establish a proximity service (ProSe) session with a second WTRU, detect the occurrence of a mobility event in a cellular network while the ProSe session is ongoing, determine a type of action to be performed with respect to the ProSe session based on one or more of the type of mobility event and type of ProSe session, and transmit a notification to a node in the cellular network, wherein the notification includes an indication of an action to be performed on the ProSe session. The node may be one of an evolved Node B (eNB), proximity server, or mobility management entity (MME). The node may be the second WTRU.

Abstract: Method and apparatus for providing information to a network are disclosed. An eNodeB (eNB) may receive pattern information relating to connection state management behavior of a wireless transmit/receive unit (WTRU). The eNB may receive this information over S1 signaling when a connection is established. The eNB may determine a time factor for connection state management, wherein the time factor may be based on the received information. The determine time factor may be used to adjust connection states of the WTRU.

Abstract: A wireless transmit/receive unit (WTRU) may receive from a network resource allocation information for device to device (D2D) communication. The WTRU may select, from the received resource allocation information for a transmission time interval (TTI), resources for a D2D channel. The WTRU may transmit, with use of the selected resources, data directly to another WTRU.

Abstract: Coordinated P-GW change for SIPTO may be provided. A WTRU may send and/or receive one or more flows via a first PDN connection and via a first P-GW. The WTRU may send an indication to the network that at least one flow of the first PDN connection is available for SIPTO. The indication may include one or more SIPTO preferences. The WTRU may receive a message from a MME. The message may trigger establishment of a second PDN connection via a second P-GW. The WTRU may move, while maintaining the first PDN connection, the at least one flow from the first PDN connection to the second PDN connection. The WTRU may deactivate the first PDN connection when the one or more flows have been moved to the second PDN connection and/or when no information has been received via the first PDN connection after a predetermined duration.

Abstract: Systems, methods, and instrumentalities are disclosed that may provide assistance across networks using different radio access technologies. A centralized gateway (CGW) may be provided to facilitate the assistance via client devices in the networks. The CGW and client devices may use a common protocol and common interface to take actions relating to the assistance.

Abstract: A wireless transmit/receive unit (WTRU) may detect cell congestion by selecting a preamble type as a function of priority level, transmitting the preamble to a serving cell, receiving a random access response (RAR) from the serving cell, determining a congestion state of the serving cell as a function of the received RAR, and/or responding to the congestion state of the serving cell. RACH functionality may be improved by allocating one or more sets of Physical RACH (PRACH) resources to a WTRU. The WTRU may configure the additional PRACH resources based on the allocation. A WTRU may determine a second set of PRACH resources based at least in part on a first set of PRACH resources. A WTRU may determine additional sets of PRACH preambles and may utilize modified PRACH preambles and/or modified PRACH preamble formats. The WTRU may signal additional PRACH resources.

Abstract: Systems, methods, and instrumentalities are disclosed to describe reporting and/or reacting to a mobility event. A wireless transmit/receive unit (WTRU) may comprise a processor configured, at least in part, to establish a proximity service (ProSe) session with a second WTRU, detect the occurrence of a mobility event in a cellular network while the ProSe session is ongoing, determine a type of action to be performed with respect to the ProSe session based on one or more of the type of mobility event and type of ProSe session, and transmit a notification to a node in the cellular network, wherein the notification includes an indication of an action to be performed on the ProSe session. The node may be one of an evolved Node B (eNB), proximity server, or mobility management entity (MME). The node may be the second WTRU.

Abstract: A dual-radio access technology (dual-RAT) wireless transmit/receive unit (WTRU) may transmit, over a cellular RAT, a registration message that includes a wireless local area network (WLAN) device identifier (ID) for a WLAN associated with the dual-RAT WTRU. A transceiver of the dual-RAT WTRU may receive, from the cellular network over the cellular RAT, assistance information that includes a security key for the WLAN. A processor of the dual-RAT WTRU may perform, over a WLAN RAT, device-to-device D2D direct discovery using the WLAN device ID and the security key for the WLAN.

Abstract: Described herein is a silent period method and apparatus for dynamic spectrum management. The methods include configuration and coordination of silent periods across an aggregated channel in a wireless communication system. A silent period management entity (SPME) dynamically determines silent period schedules for channels based on system and device information and assigns a silent period duration and periodicity for each silent period. The SPME may reconfigure the silent period schedule based on system delay, system throughput, channel quality or channel management events. A silent period interpretation entity (SPIE) receives and implements the silent period schedule. The silent periods for the channels may be synchronized, independent, or set-synchronized.

Abstract: Coordinated P-GW change for SIPTO may be provided. A WTRU may send and/or receive one or more flows via a first PDN connection and via a first P-GW. The WTRU may send an indication to the network that at least one flow of the first PDN connection is available for SIPTO. The indication may include one or more SIPTO preferences. The WTRU may receive a message from a MME. The message may trigger establishment of a second PDN connection via a second P-GW. The WTRU may move, while maintaining the first PDN connection, the at least one flow from the first PDN connection to the second PDN connection. The WTRU may deactivate the first PDN connection when the one or more flows have been moved to the second PDN connection and/or when no information has been received via the first PDN connection after a predetermined duration.

Abstract: A method and apparatus for home Node-B (HNB) mobility with a local IP access (LIPA) packet data network (PDN) connection are described. A target home node-B (HNB) may receive a handover request message from a source HNB to handover a wireless transmit/receive unit (WTRU). A path switch request may be transmitted to a local gateway (LGW) to change a downlink data path towards the target HNB in response to the handover request message. The LGW may act as a mobility management and local mobility anchor for the handover; and informing an HNB gateway (GW) about the handover so that the downlink data path for core network (CN) traffic is modified towards the target HNB.

Abstract: A wireless transmit/receive unit (WTRU) may include a transceiver and a processor. The WTRU may receive broadcast information that may include at least one control parameter and/or an associated indication of access barring for each of the plurality service types. The non-access stratum (NAS) layer in the WTRU may send a service access request to the radio resource control (RRC) layer for the application including the service type and/or the priority associated with the application. If a priority associated with an application is above a predetermined priority threshold, the RRC layer may generate and transmit an RRC connection request message for the application to an eNB. In this case, the WTRU may ignore an indication of access barring for a service type associated with the application when proceeding with the connection request. The service types may be application specific congestion control for data communication (ACDC) categories, for example.

Abstract: A method and apparatus for managing user plane congestion in a network are disclosed. A method performed by a wireless transmit/receive unit (WTRU) for user plane congestion in a network includes receiving an indication from the network that user plane congestion exists in the network, transmitting a request for the network to provide a lower Quality of Service (QoS) level for a particular service based on the indication, and observing a decrease in user plane QoS based on the transmitted request.

Abstract: Methods, apparatus, systems, devices, and computer program products directed to enhancements to proximity-based services (ProSe) direct discovery are provided.