Radio communication system

Details Radio communication system Radio communication system

H - Electricity

04

J

H04J 3/16 (2006.01) H04B 7/212 (2006.01) H04B 7/26 (2006.01) H04Q 7/22 (2006.01)

Patent

CA 2112762

Portable stations with a single receiver can perform communication using a plurality of slots in one frame in time division multiple access (TDMA) transmission. When communication is performed between one of the portable stations and a cell station with data of two 32 kbps data into which an exchange converts one 64 kbps data, the portable station occupies two slots in one TDMA frame. A controller of the cell station assigns these two slots as being separated from each other by at least one slot. Alternatively, the controller assigns these two slots as being adjacent to each other and assigns same carrier frequency to these slots. Thus, communication with a transmission rate of 63 kbps can be performd by using two slots or two channels of 32 kbps.

Des stations portatives munies d'un seul récepteur permettant la communication en utilisant une pluralité d'intervalles par trame lors de la transmission multiplex temporel asynchrone (TDMA). Lors de la communication entre une des stations portatives et une station cellulaire des signaux de deux canaux de 32 kbps, qu'un échangeur convertit en un canal de 64 kbps, la station portative occupe deux intervalles d'une trame TDMA. Un contrôleur de la station cellulaire répartit ces deux intervalles de manière à les séparer l'un de l'autre d'au moins un intervalle. Alternativement, le contrôleur les place en position adjacente l'un à l'autre et leur attribue la même fréquence porteuse. De telle manière, la communication à un taux de transmission de 63 kbps peut s'effectuer par l'emploi de deux intervalles ou deux canaux de 32 kbps.

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