H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 7/216 (2006.01) H04B 1/707 (2006.01) H04B 7/26 (2006.01) H04Q 7/38 (2006.01)
Patent
CA 2272875
A new DTX-MAC protocol is proposed for a cellular radio telecommunications system with many users. Several users are allowed to transmit packets within a time-slotted frame structure. Direct sequence spread spectrum technique is used to spread the packets, and all packets within the frame are spread using the same spreading sequence. The packets overlap, but each packet begins within a distinct slot of the frame. Each slot, or mini-slot, since it is much shorter than the packet, is dedicated to one of the mobile terminal users. Collisions between packets are prevented by appropriate selection of the duration of the mini-slot. Packets may be ARMs, user data, or both. A packet beginning within a mini-slot is assumed to be from the mobile terminal to which that mini-slot is dedicated.
Krzymien Witold A.
Sun Songsong
Telecommunications Research Laboratories
Thompson Lambert Llp
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