Patent ID: 7796573

Claim:
A terminal for operation within an ad hoc, peer to peer radio system, wherein the terminal is a hop of a routing path connecting a call from a source to a destination, the terminal comprising: a communicating means for transmitting and receiving signals based on time-division messaging, said signals being transmitted during a series of time frames (TF) each divided into a series of time slots (TS) comprising at least one time slot in which control signals are transmitted; and other time slots in which are transmitted data signals, wherein said at least one time slot transmitting control signals at a first frequency of F0, and said other time slots (TS) transmitting data signals at frequencies of F1, F2, and F3, respectively, each of said time frames (TF) comprising an inter-frame time gap (IFTG) at the end of each of said time frames (TF) in which no signals are transmitted, wherein said inter-frame time gap (IFTG) has a length different than said time slots, whereby said terminal is allowed time to perform necessary calculations, wherein each of said time frames (TF) further comprises a last time slot (LTS); a processor; and a memory for storing computer executable code to be executed by the processor, for generating initial said control signals in a respective last time slot (LTS) of a respective time frame (TF) indicating initial presence of a respective terminal in order to start communicating with other terminals, wherein said at least one time slot (TS) for said control signals is transmitted at a first power level, and said other time slots (TS) for said data signals are transmitted at a second power level, wherein said second power level is equal to or less than said first power level that is computed according to quality reports received from all terminals in a service group.