| 摘要 |
A portable or mobile radio terminal simultaneously monitors an active temporarily assigned working channel and the system control channel of a trunked radio communications system. This arrangement provides many advantages including, for example, better system efficiency, better performance and faster access times. In one example arrangement, the portable or mobile radio includes a digital receiver that down converts the entire system band and uses advanced digital techniques to select the control channel and active working channel frequencies. The basic concept of rethinking the radio architecture has the potential of removing significant constraints on the overall trunked system design - and therefore transforming forever the way future trunked radio systems of any kind are designed. |
