Abstract: Methods and apparatus are described. A wireless transmit/receive unit (WTRU) includes a transceiver and a processor operatively coupled to the transceiver. The transceiver and the processor establish a connection with a first wireless network node and a second wireless network node. The transceiver and the processor also receive power configurations and timing advances from the first wireless network node independently of the second wireless network node. The transceiver and the processor also simultaneously receive downlink signals from both the first wireless network node and the second wireless network node. The downlink signals are independently scheduled by a scheduler of the first wireless network node and a scheduler of the second wireless network node.

Abstract: In a wireless communication system including a wireless transmit/receive unit (WTRU) and at least one Node-B, a method and apparatus is used to selectively enable reception of at least one downlink (DL) enhanced uplink (EU) signaling channel established between the WTRU and the Node-B(s). During the operation of an enhanced dedicated channel (E-DCH), the WTRU monitors at least one DL EU signaling channel established between the WTRU and the Node-B(s) only when it is necessary, based on the WTRU's knowledge of at least one established standard procedure. The WTRU coordinates and consolidates DL signaling channel reception requirements of a plurality of channel allocation and/or data transmission procedures carried out by the WTRU in accordance with the established standard procedure. The WTRU determines whether to enable reception of at least one specific DL signaling channel based on the consolidated DL signaling channel reception requirements.

Abstract: The present invention discloses a method and system for efficiently supporting data calls to WTRUs in systems that also support telephony. Various types of data is transmitted on a known schedule which is tightly synchronized to a predetermined time frame. The WTRUs synchronize their wake-up periods to search for data at times when data may or will actually be transmitted to them.

Abstract: A method and apparatus for uplink transmission is disclosed. A WTRU transmits a first type message to a Node-B that indicates that the WTRU has uplink buffered data to transmit and the WTRU requires uplink resources for transmission of the uplink buffered data. The WTRU receives a first uplink data scheduling message in response to the transmitted first type message. Subsequent to receiving the first uplink data scheduling message, the WTRU transmits a second type message or a third type message. The second type message includes a plurality of indications. The third type message indicates an amount of uplink buffered data and has less information than the second type message. The WTRU receives, in response to the transmitted second type message or third type message, a second uplink data scheduling message and transmits uplink data over an uplink channel based on the received second uplink data scheduling message.

Abstract: A WTRU may comprise a transmitter configured to transmit at least one registration message, to a cellular network using IP, which indicates support for VoIP via a WLAN. The transmitter may be configured to transmit an indication of supported messaging or other capabilities of the WTRU. The WTRU may comprise a receiver configured to receive a data message via the WLAN in accordance with the capabilities of the WTRU. The data message may be received via the cellular network, having originated from another WTRU. The WTRU may also comprise a display configured to display the received data message.

Abstract: A method and apparatus for requesting and releasing resources for a wireless transmit/receive unit (WTRU) and/or Node B. The WTRU may transmit a channel acquisition request to the Node B and receive a resource allocation from the Node B. The resource allocation may include a common resource. The WTRU may release the common resource. The release may be based on one or more conditions. The channel acquisition request or the resource allocation may include information related to one or more channels or resources.

Abstract: A wireless transmit/receive unit (WTRU) is configured to receive at least one serving grant and at least one non-scheduled grant. The at least one serving grant is a grant for scheduled data transmission. The at least one non-scheduled grant is a grant for non-scheduled data transmission. The WTRU is configured to determine supported enhanced dedicated channel transport format combinations (E-TFCs) within a E-TFC set (E-TFCS) based on a remaining transmit power for enhanced uplink (EU) transmission. The WTRU is configured to limit medium access control for dedicated channel (MAC-d) flow data multiplexed into a medium access control for enhanced uplink (MAC-e) protocol data unit (PDU) to a largest E-TFC size that is smaller than a size of MAC-d flow data allowed by the received serving and non-scheduled grants and available for transmission.

Abstract: A user equipment (UE) may receive a first downlink signal, which may include a resource assignment having an indication of a first resource of a plurality of resources. The resource assignment may also have an indication of a number of resources of the plurality of resources. In addition, the plurality of resources may be consecutive resources in a sequence. Further, the first downlink signal may include an indication of a first time interval of a plurality of time intervals and a number of time intervals of the plurality of time intervals to which the resource assignment applies. Moreover, the plurality of time intervals may be consecutive time intervals. Additionally, the UE may receive at least one additional downlink signal over a downlink shared channel in the plurality of resources and in the plurality of time intervals. In an example, the first downlink signal may be received over a downlink signaling channel.

Abstract: In a wireless communication system comprising at least one evolved Node-B (eNB) and a plurality of wireless transmit/receive units (WTRUs), a non-contention based (NCB) channel is established, maintained, and utilized. The NCB channel is allocated for use by one or more WTRUs in the system for utilization in a variety of functions, and the allocation is communicated to the WTRUs. The wireless communication system analyzes the allocation of the NCB channel as required, and the NCB channel is reallocated as required.

Abstract: A method of feedback in a wireless transmit receive unit includes providing a precoding matrix index (PMI), error checking the (PMI) to produce an error check (EC) bit, coding the PMI and the EC bit and transmitting the coded PMI and EC bit.

Abstract: A method for controlling discontinuous reception in a wireless transmit/receive unit includes defining a plurality of DRX levels, wherein each DRX level includes a respective DRX cycle length and transitioning between DRX levels based on a set of criteria. The transitioning may be triggered by implicit rules.

Abstract: A wireless transmit/receive unit (WTRU) may receive a first transmission in a first band of a first Federal Communication Commission (FCC) spectral block using orthogonal frequency division multiplex (OFDM). The first transmission may include reconfiguration information. The WTRU may receive, in response to the reconfiguration information, a second transmission in a second band of a second FCC spectral block using OFDM. The WTRU may receive, based on a dynamic assignment, transmissions in the first band and the second band.

Abstract: A method and apparatus for efficient precoding matrix verification in a multiple-input multiple-output MIMO wireless communication system are disclosed. A wireless transmit/receive unit WTRU sends a precoding matrix index PMI to an eNodeB. The eNodeB sends a verification message including a PMI indicator indicating whether or not the PMI of the WTRU and a PMI of the eNodeB are identical. If the PMI of the WTRU and of the eNodeB are identical, the eNodeB sends just a PMI indicator otherwise the eNodeB sends to the WTRU a PMI indicator and the PMI of the eNodeB. A plurality of PMIs may be sent simultaneously, and the PMIs may be partitioned into a plurality of groups. The PMI indicator may be either attached to or inserted into control signaling. PMI validation messages can be signaled to WTRU by control signaling or use of a dedicated reference signal.

Abstract: Methods and wireless devices are described. A method includes a wireless device transmitting to wireless transmit/receive units (WTRUs) by being scheduled by the base station or using a pool of radio resources, which is for any of a plurality of wireless devices to use for transmission to WTRUs. On a condition that the wireless device is to be scheduled by the base station, the wireless device receives scheduling information for transmission to a WTRU having a group radio network terminal identifier (RNTI) and transmits to the WTRU in response to the received scheduling information. The scheduling information for transmission to the base station uses a different RNTI. On a condition that the wireless device is to use the pool of radio resources for transmission to a WTRU, the wireless device transmits to the WTRU without being scheduled by the base station using the pool of radio resources.

Abstract: In a wireless communication system comprising at least one evolved Node-B (eNB) and a plurality of wireless transmit/receive units (WTRUs), a non-contention based (NCB) channel is established, maintained, and utilized. The NCB channel is allocated for use by one or more WTRUs in the system for utilization in a variety of functions, and the allocation is communicated to the WTRUs. The wireless communication system analyzes the allocation of the NCB channel as required, and the NCB channel is reallocated as required.

Abstract: A wireless transmit/receive unit (WTRU) may receive a higher layer message indicating a triggering condition. The WTRU may process data for a logical channel. Based on the higher layer message and the triggering condition for the logical channel being met, the WTRU may transmit a predetermined sequence over an uplink control channel. The WTRU may receive a scheduling message based on the transmitted predetermined sequence.

Abstract: A method performed by a WTRU may comprise transmitting a request for attachment to a base station. Authentication may be performed between the WTRU and a cellular core network node of a cellular core network, via the base station. The method may further comprise transmitting a registration request to the cellular core network via SIP over an IMS and transmitting a SIP message indicating a capability of the WTRU to receive data messages via the IMS. The WTRU may receive, in accordance with the capability of the WTRU to receive data messages via the IMS, at least one data message, from the base station, via the IMS. The data message may be displayed on a display of the WTRU.

Abstract: A WTRU may comprise a transmitter configured to transmit at least one registration message, to a cellular network using IP, which indicates support for VoIP via a WLAN. The transmitter may be configured to transmit an indication of supported messaging or other capabilities of the WTRU. The WTRU may comprise a receiver configured to receive a data message via the WLAN in accordance with the capabilities of the WTRU. The data message may be received via the cellular network, having originated from another WTRU. The WTRU may also comprise a display configured to display the received data message.

Abstract: A method and apparatus for radio resource control (RRC) messaging. A method in a wireless communication system includes receiving, at a wireless transmit/receive unit (WTRU) an RRC change command including a plurality of commands from a Node B and receiving, at the Node B, an RRC change response from the WTRU, wherein the RRC change command includes a command for performing a measurement gap configuration procedure and a command for performing a measurement gap activation procedure.

Abstract: A WTRU receives a control message intended for the WTRU in a shared physical radio resource space in a transmission time interval (TTI) monitored by the WTRU. The WTRU determines whether the control message is intended for the WTRU based on WTRU identity-masked cyclic redundancy check bits. The WTRU processes the control message. The control message has radio resource assignment information and a separate indication indicating whether the control message is a type of control message associated with an uplink or a downlink transmission. The WTRU processes a downlink transmission received in assigned radio resources in the TTI on a condition that the indication indicates that the control message type is associated with a downlink transmission. The WTRU transmits an uplink transmission in assigned radio resources in a subsequent TTI on a condition that the indication indicates that the control message type is associated with an uplink transmission.