US7499707B2

Not Available

Title

Digital communications system

Application Number:

US20020181339

Publication Date:

03-03-2009

Current Assignee:

Family ID:

Application Date:

07-10-2002

Publication Country:

US

Priority Date:

18-01-2000

Declaring Company:

Abstract  Abstract

In FDMA communications between two or more primary radios ( 41 42; 141 142) use is made of a quiescent period in the primary communication. The quiescent period is used by secondary radios (43 44; 143 144) to communicate with each other. The quiescent period may be a transmit interrupt (TI) frame normally provided in a DIIS protocol in order to permit return signaling from a called radio (43 44). The secondary radios (43 44) may signal to each other during the TI frame. Alternatively the quiescent period may be a gap in channel activity in which case regulated access telegrams (96) are transmitted by either a calling primary device (141) or a last to call primary device (141) or a base station (141) the regulated access telegrams determining a reservation window period during which secondary devices (143 144) may signal to one another.

Note:

The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)

The information in grey was provided by the patent holder

The information in purple was extracted from the FrandAvenue

Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.

Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.

Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.

Family member:related patents or applications that share a common priority or original filing.