System and method for performing a radio link control (RLC) reset in a downlink multipoint system

摘要

A method and apparatus for wireless communication may provide an RLC reset procedure tailored for a multipoint HSDPA system utilizing a plurality of disparate Node Bs to provide an RLC flow from an RNC to a UE. Some aspects of the disclosure provide for a flush request to be provided to each of a plurality of Node Bs utilized as serving cells in the multipoint HSDPA system, so that stale packets are not retained in internal buffers at the Node Bs following the RLC reset procedure. In some examples, the RLC reset procedure is only completed after confirmation that the flush of the internal buffers has been completed. Confirmation may be explicitly provided by each Node B utilizing a backhaul interface, or may be implicitly determined utilizing timers or signaling between the respective Node Bs.

主权项

1. A method of wireless communication, comprising:
allocating at least a portion of an RLC flow to each of a plurality of base stations for transmission to a user equipment; beginning an RLC reset procedure to reset the RLC flow; transmitting a flush request to each of the plurality of base stations to request that the base stations each flush an internal buffer related to the RLC flow; completing the RLC reset procedure after completion of the flush of the internal buffer of the each of the plurality of base stations, and facilitating a determination at a first base station that a second base station has completed the flush of its internal buffer, among the plurality of base stations, wherein the completing of the RLC reset procedure comprises transmitting a reset request to at least one base station of the plurality of base stations.