| 摘要 |
<p>PCT No. PCT/FR95/00381 Sec. 371 Date Sep. 24, 1996 Sec. 102(e) Date Sep. 24, 1996 PCT Filed Mar. 27, 1995 PCT Pub. No. WO95/27345 PCT Pub. Date Oct. 12, 1995A mobile radio system conveys frames between at least one mobile station and at least one base station, each frame comprising N time slots, a burst of data being transmitted in each time slot, and each time slot being associated with a separate call between a mobile station and a base station. For each call over a transmission channel, the quality of the transmission channel is analyzed and, on the, basis thereof, a selection is made between first and second modes of transmission. In the first mode of transmission data to be transmitted is organized in first blocks obtained by a first encoding of source blocks, each of the first blocks has a size greater than the content of (P-1) bursts, where P is an even number at least equal to 2, and the data of the same first block is distributed between at least P bursts. In the second mode of transmission the data to be transmitted is organized in second blocks each having a size less than or equal to the content of P/2 bursts, the data of the same second block is distributed into at most P/2 bursts, at least P/2 bursts are available relative to the first mode of transmission, and an automatic retransmission request mechanism is used to retransmit in the available bursts second blocks that are detected to have been received incorrectly. This second mode of transmission necessitates a quality of the transmission channel greater than that necessitated by the first mode of transmission.</p> |
