Patent ID: 8254410
Filing Date: 2012-08-28
Classification: H04W

Abstract:
1. In a wireless communication apparatus comprising a protocol stack comprising a logical link control (LLC) layer and a radio link control (RLC) layer comprising an RLC entity, a method for transmitting RLC data blocks, comprising: (a) receiving at the RLC entity a first LLC protocol data units (PDU) formed by the LLC layer and corresponding to a first Packet Flow Context (PFC) and forming a first set of RLC data blocks corresponding to the first LLC PDU, wherein each RLC data block included in the first set of RLC data blocks comprises a block sequence number (BSN) field that stores a BSN; (b) transmitting a subset of the first set of RLC data blocks formed by the RLC entity, wherein each transmitted RLC data block comprises at least a portion of the first LLC PDU, which portion has not previously been transmitted in an RLC data block; (c) after step (a), receiving at the RLC entity a second LLC PDU formed by the LLC layer and corresponding to a second PFC and forming a second set of RLC data blocks corresponding to the second LLC PDU; (d) after step (b), transmitting all of the second set of RLC data blocks formed by the RLC entity, wherein each transmitted RLC data block comprises at least a portion of the second LLC PDU, which portion has not previously been transmitted in an RLC data block; and (e) after step (d), for each RLC data block included in the first set of RLC data blocks not transmitted in step (b), (e1) replacing the BSN stored in the BSN field of the RLC data block with a new BSN and then (e2) transmitting the RLC data block, wherein each RLC data block transmitted in step (e2) comprises at least a portion of the first LLC PDU, which portion has not previously been transmitted in an RLC data block.