10. DESCRIPTION
10.1. Frequency
The frequency range of 902.713 MHz ~ 927.289 MHz is used. Transmitting and receiving channel
between base unit and handset is same frequency. Refer to the Frequency Table.
10.2. Time Division Duplex (TDD) operation
Transmission/reception between the base unit and handset is performed by time-sharing as
shown in Fig. 7. 1 slot time of transmission and reception is 1mS.Same frequency is used in
transmitting and receiving. The figure shows an example; the frequency of 3ch is used in
transmitting between the base unit and handset.
Fig. 7
10.2.1. TDD Frame Format
The TDD frame is 2mS in length. Each subframe contains 128 bits of 7.8 S duration.
Each subframe consists of the following four fields:
43
To Next Page
Loading...
