Extended range tdma system

Details Extended range tdma system Extended range tdma system

H - Electricity

04

B

H04B 7/26 (2006.01) H04Q 7/36 (2006.01)

Patent

CA 2151190

A TDMA radio communication system such as GSM has a limited time period (td) over which the transmission from a mobile station (MS1 .. MS5) can be advanced to allow for the transit time of the signal between the mobile and the base station (BS), and this limits the maximum range of the system to RI. By co-locating a first transceiver (TX1/RX1) operating on a first frequency band(FI) and a second transceiver (TX2/RX2) operating on a second frequency band (FO), and delaying the reception time slots of RX2 by td, the first transceiver can be used for communication up to RI, and the second transceiver can be used for communication for mobiles between RI and RO. Idle mobiles are instructed to camp on FO and RX1 is switched during access request periods to look for access requests on FO.

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