Abstract: A method and base station are disclosed. The base station comprises a wireless transceiver and a processor. The base station performs wireless communications with a wireless transmit/receive unit (WTRU) via a primary cell, transmits a message via a shared channel of the primary cell, wherein the message includes information identifying a plurality of non-primary cells, and transmits, to the WTRU, data over a downlink channel of at least one of the plurality of non-primary cells identified by the message.

Abstract: A method and base station are disclosed. The base station comprises a transceiver and a processor. The base station transmits a system information block (SIB) to a wireless transmit/receive unit (WTRU), wherein the SIB indicates random access transmission uplink resources. After transmitting the SIB, the base station receives a random access preamble from the WTRU. After receiving the random access preamble, the base station receives, using one or more of the uplink resources indicated by the SIB, a first message from the WTRU, wherein the first message includes a first radio network temporary identifier (RNTI) of the WTRU. After receiving the first message, the base station transmits a second message to the WTRU, wherein the second message is derived from a second RNTI, the second RNTI being different than the first RNTI. The base station may be configured to communicate with the WTRU on a plurality of cells.

Abstract: A method and a wireless transmit/receive unit (WTRU) are disclosed. The WTRU comprises a transceiver and a processor. The WTRU receives a system information block (SIB) from a base station, wherein the SIB indicates random access transmission uplink resources. After receiving the SIB, the WTRU transmits a random access preamble to the base station. After transmitting the random access preamble, the WTRU transmits, using one or more of the uplink resources indicated by the SIB, a first message to the base station, wherein the first message includes a first radio network temporary identifier (RNTI) of the WTRU. After transmitting the first message, the WTRU receives a second message from the base station, wherein the second message is derived from a second RNTI, the second RNTI being different than the first RNTI. After receiving the second message, the WTRU transmits to the base station.

Abstract: A method and apparatus are disclosed. The apparatus comprises a wireless transceiver and a processor. The apparatus performs wireless communications with a primary cell, receives a message via a shared channel of the primary cell, wherein the received message includes information identifying a plurality of non-primary cells, monitors downlink channels of the identified plurality of non-primary cells based on the received message, and receives data over a downlink channel of at least one of the identified plurality of non-primary cells based on the monitored downlink channels.

Abstract: A method and apparatus are disclosed. The apparatus comprises a wireless transceiver and a processor. The apparatus transmits a data packet via a primary cell and a non-primary cell, the primary cell and the non-primary cell, wherein the data packet is sent via the primary cell and the non-primary cell over an enhanced uplink (EU) channel. On a condition that the transmitted data packet is not successfully decoded by the primary cell and also not successfully decoded by the non-primary cell, the apparatus receives a negative acknowledgement (NACK) signal from the primary cell and not receiving the NACK signal from the non-primary cell and retransmits the data packet in response to receiving the NACK signal from the primary cell even though the NACK signal was not received from the non-primary cell.

Abstract: A method and a wireless transmit/receive unit (WTRU) are disclosed. The WTRU includes a receiver and a transmitter. The WTRU receives, from a primary downlink cell, a first scheduling assignment for a first uplink transmission and transmits first data in the first uplink transmission to at least a primary uplink cell using a first hybrid automatic repeat request (HARQ) process. The WTRU receives, from the primary downlink cell, a second scheduling assignment, the second scheduling assignment indicating a hybrid automatic repeat request (HARQ) process identification of the first HARQ process, a modulation and coding set (MCS), and a transmission time opportunity, determines whether to retransmit the first data based on the HARQ process identification, and retransmits the first data in a second uplink transmission using the first HARQ process, the MCS, and the transmission time opportunity.

Abstract: A system is provided for scheduling for a multicast broadcast single frequency network (MBSFN). The system includes a central control configured to promote a plurality of enhanced node Bs (ENBs) transmitting one or more multicast traffic channels (MTCHs). The one or more MTCHs are provided during a variable scheduling period (SP) and include a data portion that contains MBSFN traffic content and a variable scheduling portion that contains scheduling information related to the MBSFN traffic content.

Abstract: A method and a wireless transmit/receive unit (WTRU) supporting uplink transmissions. The method being used in a WTRU and comprising transmitting a data block to a base station using a hybrid automatic repeat request (H-ARQ) process, receiving uplink scheduling information from the base station, wherein the uplink scheduling information includes a H-ARQ process identification for the H-ARQ process, and determining whether to retransmit the data block based on the received uplink scheduling information and not based on whether the WTRU has received a negative acknowledgement (NACK) from the base station. The uplink scheduling information includes physical channel resources. The uplink scheduling information is received from a primary cell and the WTRU transmits to the primary cell and at least one secondary cell. The scheduling information indicates a modulation and coding scheme.

Abstract: A wireless transmit/receive unit (WTRU) and a method comprising monitoring a plurality of cells for ACK/NACK information, each of the plurality of cells including a plurality of downlink channels, for each of the plurality of cells, determining a subset of the downlink channels for the cell, and, for each of the plurality of cells, monitoring the subset of downlink channels for one or more downlink messages.

Abstract: A method and base station supporting uplink transmissions. The method being used in a base station and comprising receiving a data block from a wireless transmit/receive unit (WTRU) using a hybrid automatic repeat request (H-ARQ) process, transmitting uplink scheduling information to the WTRU to indicate whether the data block should be retransmitted by the WTRU, wherein the uplink scheduling information includes a H-ARQ process identification for the H-ARQ process, and receiving a retransmission of the data block from the WTRU. The uplink scheduling information includes physical channel resources. The uplink scheduling information is received from a primary cell and the WTRU transmits to the primary cell and at least one secondary cell. The scheduling information indicates a modulation and coding scheme.

Abstract: A method and a wireless transmit/receive unit (WTRU) supporting uplink transmissions. The method being used in a WTRU and comprising transmitting a data block to a base station using a hybrid automatic repeat request (H-ARQ) process, receiving uplink scheduling information from the base station, wherein the uplink scheduling information includes a H-ARQ process identification for the H-ARQ process, and determining whether to retransmit the data block based on the received uplink scheduling information and not based on whether the WTRU has received a negative acknowledgement (NACK) from the base station. The uplink scheduling information includes physical channel resources. The uplink scheduling information is received from a primary cell and the WTRU transmits to the primary cell and at least one secondary cell. The scheduling information indicates a modulation and coding scheme.

Abstract: A method and a wireless transmit/receive unit (WTRU) supporting uplink transmissions. The method being used in a WTRU and comprising transmitting a data block to a base station using a H-ARQ process, receiving uplink scheduling information from the base station, wherein the uplink scheduling information includes a H-ARQ process identification of the H-ARQ process, and determining whether to retransmit the data block based on the H-ARQ process identification. The reception of the uplinks scheduling information indicates retransmission of a NACK'ed data block. The uplink scheduling information includes physical channel resources. The uplink scheduling information is received from a primary cell and the WTRU transmits to the primary cell and at least one secondary cell. The scheduling information indicates a modulation and coding scheme.

Abstract: A system is provided for scheduling for a multicast broadcast single frequency network (MBSFN). The system includes a central control configured to promote a plurality of enhanced node Bs (ENBs) transmitting one or more multicast traffic channels (MTCHs). The one or more MTCHs are provided during a variable scheduling period (SP) and include a data portion that contains MBSFN traffic content and a variable scheduling portion that contains scheduling information related to the MBSFN traffic content.

Abstract: An enhanced uplink user equipment is in soft handover. A radio network controller selects a primary Node-B out of a plurality of Node-Bs supporting the soft handover. The radio network controller receiving successfully received enhanced uplink data packets from the plurality of Node-Bs. The radio network controller reordered the successfully received enhanced uplink data packets for in-sequence deliver. The primary Node-B sends specified scheduling information to the user equipment that the other Node-Bs does not transmit. At least the primary Node-B transmits acknowledgements and negative acknowledgements to the user equipment.

Abstract: Disclosed is method and an evolved NodeB (eNB) for use in a Long Term Evolution (LTE) network including establishing an X2 interface between the eNB and another eNB and communicating information between the eNB and the another eNB via the X2 interface.

Abstract: A method, wireless transmit/receive unit (WTRU), and a wireless network node configured for wireless communications comprising receiving, by the WTRU, configuration information for a primary cell and one or more non-primary cells, receiving, by the WTRU, a message on the primary cell, the received message including indication of at least one of the one or more non-primary cells from which the WTRU is to receive a downlink shared channel transmission, and in response to the received message, receiving and processing, by the WTRU, the downlink shared channel transmission from the indicated at least one of the one or more non-primary cells.

Abstract: Techniques for use in a wireless device are provided. The techniques include monitoring a status of an amount of data in at least one buffer for transmission; determining an indication of additional capacity for transmission; transmitting at least one signal with an indication based on the monitored buffer status and the indication of additional capacity for transmission; and transmitting data of the at least one buffer based on the transmitted at least one signal.

Abstract: Disclosed is method and apparatus for operating a wireless network, the wireless network including a first eNB and a second eNB, including establishing an X2 interface between the first eNB and the second eNB and exchanging parameters between the first eNB and the second eNB via the X2 interface.

Abstract: A method and apparatus for forwarding non-consecutive data blocks in uplink transmissions including receiving a plurality of data blocks from a wireless transmit/receive unit (WTRU); storing the received data blocks in a buffer; forwarding data blocks from the buffer to an entity higher than a medium access control (MAC) entity based on a frame number associated with a hybrid automatic repeat request (HARQ) process for the stored data blocks; initializing a timer in response to a determination that the data blocks stored in the buffer include non-consecutive data blocks, the determination that the data blocks stored in the buffer include non-consecutive blocks indicating a missing data block; and forwarding non-consecutive ones of the data blocks stored in the buffer to the entity higher than the MAC entity on a condition that the timer has expired and the missing data block has not been received by the wireless network device.

Abstract: A system and method which improve the performance of a wireless transmission system by intelligent use of the control of the flow of data between a radio network controller (RNC) and a Node B. The system monitors certain criteria and, if necessary, adaptively increases or decreases the data flow between the RNC and the Node B. This improves the performance of the transmission system by allowing retransmitted data, signaling procedures and other data to be successfully received at a faster rate, by minimizing the amount of data buffered in the Node B. Flow control is exerted to reduce buffering in the Node B upon degradation of channel qualities, and prior to a High Speed Downlink Shared Channel (HS-DSCH) handover.