Patent ID: 9432983
Filing Date: 2016-08-30
CPC Classification: H04L,H04W

Claim Text:
1. A method performed in a base station subsystem, BSS, for transmission of radio link control, RLC, blocks in an extended sequence number space, SNS, and extended transmit window size, WS on multiple downlink carriers, wherein an RLC/Medium Access Control, MAC, header of an RLC block has a fixed number of bits and comprises multiple control fields, and wherein a number of bits of the RLC/MAC header comprises a block sequence number, BSN, space, the BSN space comprising at least one BSN field, each BSN field including a respective BSN index, the method comprising: selecting one or more spare bits in the RLC/MAC header; indexing each RLC block with a BSN index selected from a range of block indices representing an extended sequence number space, SNS, and extended transmit window size, WS, wherein the BSN index is included in a BSN field of an expanded BSN space including the selected one or more spare bits; and re-arranging pre-existing BSN fields in the BSN space by expanding a first BSN field used for a first BSN index and reducing further pre-existing BSN fields in the BSN space.