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Provision of additional traffic capacity by slot punching

IP.com Disclosure Number: IPCOM000198224D
Original Publication Date: 2010-Jul-31
Included in the Prior Art Database: 2010-Jul-31
Document File: 4 page(s) / 36K

Publishing Venue


Related People

Chater-Lea, Dave Dyson, Dean


TETRA is a TDMA system where information is carried in discrete slots of information. It already allows for slots to be stolen within circuit mode channels to send additional signalling or data, and the receiving radios can recover from missing audio frames caused by this, or by signal loss. This invention makes use of the ability of a receiving radio to recover from a frame loss. Slots are regularly punched out from many or all of the allocated downlink circuit mode traffic channels on a site in a regularly advancing pattern, and an extra one or more calls is allocated to the stolen pattern of frames.