Abstract:
A method and apparatus provide for the control of wireless communication signals over an enhanced dedicated channel (E-DCH) resource while operating in the CELL_FACH state with an allocated E-DCH radio network temporary identifier (E-RNTI). A determination is made that a periodic cell update timer is expired. In response to the periodic cell update timer expiring, a determination is made whether the WTRU has an allocated E-DCH resource. If the WTRU has an allocated E-DCH resource, the periodic cell update timer is re-started without performing a periodic cell update.
Abstract:
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.
Abstract:
A wireless transmit/receive unit (WTRU) may operate in a first state where the WTRU does not have configured physical channels and discontinuously monitors for pages and a second state where the WTRU has configured uplink physical channels. The WTRU may, in response to a signal, transition to the first state and store an identity and medium access control (MAC) information. The WTRU may reinitiate communication with a network using the stored identity and MAC information.
Abstract:
A method and apparatus for radio link synchronization and power control in CELL_FACH state and idle mode are disclosed. A wireless transmit/receive unit (WTRU) transmits a random access channel (RACH) preamble and receives an acquisition indicator acknowledging the RACH preamble via an acquisition indicator channel (AICH) and an index to an enhanced dedicated channel (E-DCH) resource. The WTRU determines a start of an E-DCH frame. An F-DPCH timing offset is defined with respect to one of the RACH access slot and an AICH access slot carrying the acquisition indicator. A relative F-DPCH timing offset may be signaled to the WTRU and the WTRU may determine a start of an E-DCH frame based on the relative F-DPCH timing offset and timing of an AICH access slot including the acquisition indicator. The WTRU may transmit a dedicated physical control channel (DPCCH) power control preamble before starting an E-DCH transmission.
Abstract:
A method and apparatus for supporting home Node B (HNB) services are disclosed. A wireless transmit/receive unit (WTRU) receives HNB access restriction information from an HNB and accesses the HNB if an access to the HNB is allowed based on the HNB access restriction information. The HNB access restriction information may be a closed subscriber group identity (CSG ID), a status bit indicating whether an HNB cell is available or not, an identity of WTRUs that are allowed to access the HNB, information indicating whether an access to a cell is barred or not. The WTRU may trigger measurements for cell reselection even though signal strength on a currently connected cell is above a threshold. The measurement may be triggered manually, periodically, under the instruction from the network, or based on a neighbor cell list including information about HNB cells located nearby.
Abstract:
A method and an apparatus for uplink transmission using multiple uplink carriers are disclosed. A wireless transmit/receive unit (WTRU) selects a dedicated channel medium access control (MAC-d) flow with highest priority data to be transmitted and performs uplink carrier selection and enhanced dedicated channel (E-DCH) transport format combination (E-TFC) restriction and selection to select a carrier among a plurality of carriers and select an E-TFC based on a maximum supported payload, a remaining scheduled grant payload of the selected carrier and a remaining non-scheduled grant payload. The WTRU then generates a medium access control (MAC) protocol data unit (PDU) for E-DCH transmission via the selected carrier based on the selected E-TFC.
Abstract:
A method and apparatus for segmenting medium access control (MAC) service data units (SDUs) creates enhanced MAC-es PDUs in the enhanced MAC-e/es sub-layer by concatenating MAC SDUs received from the logical channels. An enhanced transport format combination (E-TFC) selection entity controls the concatenation of MAC SDUs into enhanced MAC-es PDUs. When a MAC SDU is received that is too large to fit into a selected enhanced MAC-es PDU payload, a segmentation entity segments the MAC SDU such that the MAC SDU segment fills the remaining payload available in the selected enhanced MAC-es PDU. The enhanced MAC-es PDU is then assigned a transmission sequence number (TSN) and multiplexed with other enhanced MAC-es PDUs to create a single enhanced MAC-e PDU that is transmitted on the E-DCH in the next transmission time interval (TTI). A HARQ entity stores and, if necessary retransmits the enhanced MAC-e PDU when a transmission error occurs.
Abstract:
A method for use in a wireless transmit/receive unit (WTRU) for receiving data over physical downlink shared channels from different cells, monitoring physical downlink control channels of a first cell for downlink control information associated with the WTRU, and recovering data from the physical downlink control channel in response to the downlink control information.
Abstract:
A method and apparatus of feedback signaling using a high speed dedicated physical control channel (HS-DPCCH) includes transmitting to a first cell a first uplink feedback signal that includes channel quality information (CQI) associated with the first cell A second uplink feedback signal that includes CQI information associated with a second cell is transmitted to the second cell.
Abstract:
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.