US7643448B2

2G

Title

Transport format data transmission

Application Number:

US20020534102

Publication Date:

05-01-2010

Current Assignee:

CP8 TECHNOLOGIES

Family ID:

32309279

Application Date:

07-11-2002

Publication Country:

US

View on Espacenet

Priority Date:

07-11-2002

Declaring Company:

CORE WIRELESS LICENSING SARL , NOKIA CORP

Abstract  Abstract

In a flexible layer one ( 403) of a GERAN transmitter device a TFCI which indicates a particular combination of cyclic redundancy check channel coding and rate matching is generated by a TFCI generating process (412) using information from the medium access control layer. The TFCI is coded by a coding process (413) and inserted into the data stream by a TFCI insertion process (414). Each code has more bits than the corresponding TFCI and identifies uniquely the TFCI. The coded TFCI is spread across the pre-interleaved block with portions placed in fixed positions in each burst. Interleaving is then performed by an interleaver (411). The coded TFCI used with a half-rate channel is the central segment of the coded TFCI used in the corresponding full-rate channel. The additional loss is so small as to be insignificant but the FER performance is significantly improved compared to using the full-rate codes as a result of the increased payload of the content data bits. In half-rate mode the amount of coded TFCI data gives rise to a ratio of the performance of the coding of the transport format combination data to the performance of the coded content data which is at a similar level to the ratio in the full-rate mode.

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