MAC AND RLC ARCHITECTURE AND PROCEDURES TO ENABLE RECEPTION FROM MULTIPLE TRANSMISSION POINTS

摘要

A method for use in a wireless communication system for two-stage reordering of received protocol data units (PDUs). The method comprising receiving PDUs from Node-Bs, wherein each of the received PDUs has a transmission sequence number (TSN), reordering the received PDUs from Node-Bs using the TSN in a MAC layer in different reordering queues, delivering the received PDUs from reordering queues to one logical channel in the RLC layer, reordering the received PDUs in the RLC layer based on a sequence number (SN), starting a timer when at least a RLC PDU is missing based on SN of the RLC PDU, and transmitting a status report indicating a missing RLC PDU based on SN of the RLC PDU if the timer expires, wherein transmission of the status report is delayed if a RLC PDU is missing based on SN of the RLC PDU and the timer is running.

主权项

1. A method for two-stage reordering of received protocol data units (PDUs) in a wireless communication system, the method comprising:
receiving, in a wireless transmit receive unit (WTRU) PDUs from a plurality of Node-Bs, wherein each of the received PDUs has a transmission sequence number (TSN); reordering the received PDUs from each of the plurality of Node-Bs using the TSN in a MAC layer in different reordering queues; delivering the received PDUs from a plurality of reordering queues to one logical channel in an RLC layer; reordering the received PDUs in the RLC layer based on a sequence number (SN); starting a timer when at least a RLC PDU is missing based on SN of the RLC PDU; and receiving, in at least one of the plurality of Node-Bs, a status report from the WTRU indicating missing RLC PDU based on SN of the RLC PDU on a condition that the timer expires, wherein the transmission of the status report is delayed on a condition that a RLC PDU is missing based on SN of the RLC PDU and the timer is running.