摘要:
Discontinuous reception (DRX) operations for wireless communications implementing carrier aggregation are disclosed. Physical downlink control channel implementation for carrier aggregation is also disclosed. DRX methods are disclosed including a common DRX protocol that may be applied across all component carriers, an individual/independent DRX protocol that is applied on each component carrier, and hybrid approaches that are applied across affected component carriers. Methods for addressing the effects of loss of synchronization on DRX, impact of scheduling request on DRX, uplink power control during DRX, and DRX operation in measurement gaps are disclosed.
摘要:
Techniques for configuring and switching a resource assignment mode for a plurality of component carriers are disclosed. A wireless transmit/receive unit (WTRU) has a capability of supporting multiple resource assignment modes such that a resource assignment mode is configured for a plurality of component carriers that are allocated for the WTRU, and the WTRU attempts to decode a control channel based on the configured resource assignment mode. The resource assignment mode may be configured for the WTRU via higher layer signaling. The resource assignment mode may be specific to the WTRU, or specific to a component carrier or a group of component carriers. The resource assignment mode may be configured separately for a downlink component carrier and an uplink component carrier. The resource assignment mode includes a separate assignment mode with component carrier indication, a separate assignment mode without component carrier indication, or a joint assignment mode.
摘要:
A method and apparatus are described which perform bandwidth aggregation by simultaneously monitoring and processing a number of simultaneous, non-contiguous or contiguous component carriers in the downlink. A wireless transmit/receive unit (WTRU) can be configured by an evolved Node-B (eNodeB) to support additional component carriers. A pre-configured additional component carrier may be used. Various methods for activating and deactivating the additional component carrier are also described.
摘要:
A wireless network system with energy management is provided wherein the nodes of the networks can activate certain software and/or hardware functionalities upon the detection of an event. The network system generally comprises a plurality of wireless nodes adapted to communicate with each other, directly or through other nodes, via radio-frequency signals. Each node is also generally capable of measuring the received signal strength of the radio-frequency signals sent by its neighbouring nodes. By detecting a significant change in the received signal strength, which is generally due to a change in the generally immediate physical environment of the receiving node, the node can activate one or more of its hardware functionalities (e.g. sensors) and/or of its software functionalities (e.g. node discovery protocols). When no significant changes or variations of the received signal strength are detected, the functionalities are generally kept in dormancy by the node in order to reduce their energy consumption.
摘要:
Embodiments contemplate techniques and devices for allocating IP addresses for MTC devices, transmitting and receiving SMS using the allocated IP addresses. The MTC device may be allocated with an IP address without activating a packet data protocol (PDP) context. In addition, after the IP address has been allocated, SMS messages may be transmitted from and to MTC devices using the IP address.
摘要:
Methods and apparatus for random access in multicarrier wireless communications are disclosed. Methods and apparatus are provided for physical random access channel (PRACH) resource signaling, PRACH resource handling, preamble and PRACH resource selection, random access response (RAR) reception, preamble retransmission, and transmission and reception of subsequent messages. A method for maintaining an allowed multicarrier uplink (UL) random access channel (RACH) configuration set by adding an UL carrier to the allowed RACH configuration set provided that a triggering event occurs and performing a random access (RA) procedure using the allowed RACH configuration set. A method for sending data in multicarrier wireless communications by determining a set of available UL carriers and selecting an UL carrier from the set of available UL carriers.
摘要:
A method and apparatus for supporting machine-type communications (MTC) are disclosed. A wireless transmit/receive unit (WTRU) may configure itself to operate in a mobile-originated-only mode. The WTRU may perform no, or a subset of, radio resource control (RRC) idle and/or non-access stratum (NAS) idle/standby state procedures in the mobile-originated-only mode. For example, the WTRU may perform cell reselection but not paging monitoring in the mobile-originated-only mode. Alternatively, the WTRU may perform paging monitoring but not cell reselection and location update. The operation in the mobile-originated-only mode may be triggered explicitly or implicitly. For example, the WTRU may operate in the mobile-originated-only mode if an inactivity timer expires. The WTRU may switch the mode in accordance with a pre-configured schedule. After transition of the operation mode, the WTRU may send a message to the network indicating such mode switch.
摘要:
Systems, methods, and instrumentalities are disclosed that may provide assistance across networks using different radio access technologies. A centralized gateway CGW (210, 710) may be provided to facilitate the assistance via client devices in the networks (220). The CGW (210, 710) and client devices may use a common protocol (311) and common interface to take actions relating to the assistance (780).
摘要:
A method and apparatus for handling system information change. When the system information changes, a wireless transmit/receive unit (WTRU) may be running a procedure. Depending on the nature of the system information, the WTRU may not need to interrupt the procedure to update the system information.
摘要:
Disclosed herein are embodiments for Machine Type Communication (MTC). The techniques disclosed may reduce signaling by transmitting MTC data over control planes and avoiding a full cycle of connection procedures typically required for transmission. MTC data may be directly appended to a control plane message, in addition, in order to reduce the signaling load, a WTRU may autonomously release the connection without being told, by the network. Techniques may be used to indicate a network provider's machine type communication (MTC) capability. The MTC services or capabilities that may be provided by a respective network operator may be communicated to a WTRU.