摘要:
Apparatus and method of wireless communication that determines received signal timing deviation which is used to generate a timing advance for adjusting wireless transmit receive unit (WTRU) transmissions. An adaptive threshold for measuring the timing deviation is set based on the energy level of received WTRU signals. WTRU signal samples which exceed the threshold are evaluated to determine timing deviation.
摘要:
A system and method of wireless communication determines received signal timing deviation which is used to generate a timing advance for adjusting User Equipment (UE) transmissions. An adaptive threshold for measuring the timing deviation is set based on the energy level of received UE signals. UE signal samples which exceed the threshold are evaluated to determine timing deviation.
摘要:
A system and method of wireless communication determines received signal timing deviation which is used to generate a timing advance for adjusting wireless transmit receive unit (WTRU) transmissions. An adaptive threshold for measuring the timing deviation is set based on the energy level of received WTRU signals. WTRU signal samples which exceed the threshold are evaluated to determine timing deviation.
摘要:
Methods and apparatus are described for providing compatible mapping for backhaul control channels, frequency first mapping of control channel elements (CCEs) to avoid relay-physical control format indicator channel (R-PCFICH) and a tree based relay resource allocation to minimize the resource allocation map bits. Methods and apparatus (e.g., relay node (RN)/evolved Node-B (eNB)) formapping of the Un downlink (DL) control signals, Un DL positive acknowledgement (ACK)/negative acknowledgement (NACK) and/or relay-physical downlink control channel (R-PDCCH) (or similar) in the eNB to RN (Un interface) DL direction are described. This includes time/frequency mapping of above-mentioned control signals into resource blocks (RBs) of multimedia broadcast multicast services (MBMS) single frequency network (MBSFN)-reserved sub-frames in the RN cell and encoding procedures for these. Also described are methods and apparatus for optimizing signaling overheads by avoiding R-PCFICH and minimizing bits needs for resource allocation.
摘要翻译:描述了用于为回程控制信道提供兼容映射的方法和装置,控制信道单元(CCE)的频率首先映射以避免中继 - 物理控制格式指示符信道(R-PCFICH)和基于树的中继资源分配以最小化资源分配 映射位。 Un DL正向确认(ACK)/否定确认(NACK)和/或中继物理层的方法和装置(例如中继节点(RN)/演进节点B(eNB))形成Un(DL)控制信号 描述了eNB到RN(Un接口)DL方向中的下行链路控制信道(R-PDCCH)(或类似的)。 这包括上述控制信号到RN小区中的多媒体广播组播服务(MBMS)单频网(MBSFN)保留子帧的资源块(RB)的时间/频率映射以及这些子帧的编码过程。 还描述了通过避免R-PCFICH并最小化资源分配的位需求来优化信令开销的方法和装置。
摘要:
Methods and apparatus are described for providing compatible mapping for backhaul control channels, frequency first mapping of control channel elements (CCEs) to avoid relay-physical control format indicator channel (R-PCFICH) and a tree based relay resource allocation to minimize the resource allocation map bits. Methods and apparatus (e.g., relay node (RN)/evolved Node-B (eNB)) for mapping of the Un downlink (DL) control signals, Un DL positive acknowledgement (ACK)/negative acknowledgement (NACK) and/or relay-physical downlink control channel (R-PDCCH) (or similar) in the eNB to RN (Un interface) DL direction are described. This includes time/frequency mapping of above-mentioned control signals into resource blocks (RBs) of multimedia broadcast multicast services (MBMS) single frequency network (MBSFN)-reserved sub-frames in the RN cell and encoding procedures for these. Also described are methods and apparatus for optimizing signaling overheads by avoiding R-PCFICH and minimizing bits needs for resource allocation.
摘要:
A method and apparatus for receiving system information updates includes a wireless transmit receive unit (WTRU) receiving a system frame number. The WTRU also receives system information messages in a modification period. The modification period has a boundary determined by the system frame number. The WTRU receives system information change notification after a first modification change boundary and determines that the system information is valid until a second modification change boundary.
摘要:
A method and apparatus for supporting a random access using a random access channel (RACH) are disclosed. Each of a plurality of wireless transmit/receive units (WTRUs) sends a random access request to a base station on an uplink RACH preamble. A RACH Response, sent by the base station, is received by each WTRU. A control signal portion of the RACH Response indicates the location of the RACH Response message portion. The RACH Response control signal comprises multiple control channel elements (CCE), where each WTRU is allocated a respective CCE to provide its unique RACH Response control signal. The WTRU is configured to locate its intended CCE from among the multiple CCEs sent by the base station.
摘要:
A method and apparatus for receiving system information updates includes a wireless transmit receive unit (WTRU) receiving a system frame number. The WTRU also receives system information messages in a modification period. The modification period has a boundary determined by the system frame number. The WTRU receives system information change notification after a first modification change boundary and determines that the system information is valid until a second modification change boundary.
摘要:
A method and apparatus for receiving system information updates includes a wireless transmit receive unit (WTRU) receiving a system frame number. The WTRU also receives system information messages in a modification period. The modification period has a boundary determined by the system frame number. The WTRU receives system information change notification after a first modification change boundary and determines that the system information is valid until a second modification change boundary.
摘要:
A method and apparatus are provided for multi-cell cooperation when multiple cells are cooperating to transmit data to a plurality of wireless transmit/receive units (WTRUs), and each cell is using a common precoding matrix. The level of information exchanged among the cells may depend on the particular cooperation architecture. The cells may share information such as channel state information (CSI), a channel quality indicator (CQI), or both. The cells may share rank indications reported by the WTRUs. The cells may also share the data that is being transmitted to the WTRUs. The method and apparatus may also determine precoding vectors for closed-loop precoding; a CQI, CSI and rank, and distributed space-time/frequency coding with multi-cell cooperation. The method and apparatus may also perform hybrid automatic repeat request (HARQ) with multi-cell cooperation, and downlink control signaling.