Radio data communications system with diverse signaling capability
First Claim
1. In an RF Radio Data Communications system operating on inbound and outbound channels with multiple transmitting sites interconnected to a centrally located NCP and a plurality of protable/mobile remote transceiver terminals, a method of accommodating two or more signalling formats or protocols concurrently within the communication system without interference therebetween including the steps of:
- programming the central NCP and each of the RF transmitting sites to be capable of operating on each of the signaling formats of interest;
programming one or more (each) of the remote transceiver terminals with the capability of operating on a particular (at least) one of the signalling formats of interest and one or more others of the remote transceiver terminals on a different signalling format of interest;
time division multiplexing each of said signalling formats of interest into a particular, reoccurring time slot, on both inbound and outbound channels; and
operating said central NCP and RF transmitting sites on a particular signalling format only within its assigned multiplexed time slot.
1 Assignment
0 Petitions
Accused Products
Abstract
Method and apparatus are disclosed for accommodating diverse signalling methods and protocols within a single, unified Radio Data Communications system without interference. In this way, improvements and new products may be integrated within a pre-established communications system without the need of discarding older equipment. Further, separate operating systems may be effectively merged without permanently modifying the merged system to one or another of the previous systems'"'"' signalling formats.
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Citations
13 Claims
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1. In an RF Radio Data Communications system operating on inbound and outbound channels with multiple transmitting sites interconnected to a centrally located NCP and a plurality of protable/mobile remote transceiver terminals, a method of accommodating two or more signalling formats or protocols concurrently within the communication system without interference therebetween including the steps of:
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programming the central NCP and each of the RF transmitting sites to be capable of operating on each of the signaling formats of interest; programming one or more (each) of the remote transceiver terminals with the capability of operating on a particular (at least) one of the signalling formats of interest and one or more others of the remote transceiver terminals on a different signalling format of interest; time division multiplexing each of said signalling formats of interest into a particular, reoccurring time slot, on both inbound and outbound channels; and operating said central NCP and RF transmitting sites on a particular signalling format only within its assigned multiplexed time slot. - View Dependent Claims (2, 3, 5, 6, 8)
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4. A method of accommodating multiple signaling formats on a single RF Radio Data Communication System in accordance with claim 32 including the further step of maintaining said established inhibit signals whenever a transmission on the inbound channel occurs which transpires across time slot junctures, but changing the signalling format of said continuing inhibit signal as it transpires across any said time slot juncture.
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7. An RF Data Communication System operating on inbound and outbound radio channels with multiple transmitting sites interconnected to a centrally located NCP and the plurality of portable/mobile remote transceiver terminals, and wherein multiple signalling formats or protocols may be accommodated concurrently within (with) the communication system without interference therebetween, comprising in combination:
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means for selectively operating the central controller (NCP) and associated fixed transmitting sites on each of the signalling formats of interest; means for operating one or more (each) of the plurality of remote portable radio data transceiver terminals on a particular(at least) one of the signalling formats of interest and one or more others of the remote radio data transceiver terminals on a different signaling format of interest; means for time division multiplexing each of said signaling formats or interest into a particular recurring time slot on both inbound and outbound channels, said last-named means further including means whereby each such slot is preceded by the transmission on the outbound channel of the appropriate synchronization signal to synchronize the respective remote terminal capable of operating on that particular signaling format within said particular time slot. - View Dependent Claims (9, 10, 11)
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12. In an RF Radio Data Communication System operating on the inbound and outbound radio channels and having at least one transmitting site connected to a central NCP with a plurality of portable/mobile remote terminals and wherein multiple signalling formats or protocols may be accommodate concurrently on such communication system without interference therebetween, said transmitting site including in combination:
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transceiver apparatus operative on the respective inbound and outbound channels; a general communication controller interconnected between said transceiver apparatus and the NCP, said controller being programmed to operated on a predetermined, first signalling protocol; an option board programed to operate on at least a second signaling protocol differing from said first signalling protocol, and means interfacing said option board with said controller wherein the transmitting site will accommodate either signalling protocol when the same is being utilized in the Radio Data Communication System. - View Dependent Claims (13)
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Specification