FIELD: data transmission; radio transmitters.
SUBSTANCE: channel coding and speed coordination TFCI indicator pointing to definite combination of cyclic redundancy code is generated in flexible layer one of GERAN network transmitter wherein data pointing to transport format combination are enoded and integrated with content data to be included in radio data burst using TFCI indicator generation process and information from medium access control layer. TFCI indicator is encoded in coding process and inserted in data stream by means of TFCI indicator insertion process. Each code incorporates more bits than respective TFCI indicator and unambiguously identifies TFCI indicator. Encoded TFCI indicator is expanded on pre-interleaved block with fractions disposed in fixed positions within each burst. Then interleaving is made by means of interleaving device. Encoded TFCI indicator used with 50% speed data transfer channel functions as central segment of encoded TFCI indicator used in respective 50% speed data transfer channel. Extra loss is negligible but FER characteristic is essentially improved compared with full-speed transfer codes due to enhanced useful load of content data bits. Amount of encoded TFCI data transferred in 50% speed mode ensures enhanced ratio of transport-format combination data encoding efficiency to content data encoding efficiency which is at same level as ratio in full-speed data transfer mode.
EFFECT: enhanced data transfer speed.
12 cl, 7 dwg, 7 tbl
