Look up table for QRT
AssigneeHarris Corporation
InventorsHenrik Bernheim, Carl Day, Jeff Battin, Andy E. Rostron
Life of this patent
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Abstract
A collection of methods of operating in a point-to-multipoint communication system with a base station and a plurality of remote stations, wherein the communication system maximizes the number of potential connections to each multipoint destination through the creation of an extended Asynchronous Transfer Mode (ATM) cell that examines the switch tag and generates an embedded output channel identifier, wherein the output channel identifier is utilized as an index for broadcast domains and selection of a Temporary Remote Path Identifier (TRPI) comprised of a series of remote station identifiers.
Claims54
In a communication system with a base station and a plurality of remote stations each remote station having a remote station identification a method of transmitting ATM cells to a selected remote in a broadcast mode where the cells are addressed without using the switch tag field bits in the ATM Cell header comprising the steps of:
- creating at the base station an extended ATM cell;
- examining the switch tag and generating from it an output channel identifier, wherein each output channel identifier represents a single virtual connection;
- embedding the output channel identifier in the header of the extended ATM cell;
- using the output channel identifier as an index to a look up table for selecting the RSI for the selected remotes station identifier;
- broadcasting from the base station, the extended ATM cell including by the RSI.
In a communication system with a base station and a plurality of remote stations each remote station with an RSI and within at least one broadcast domain, a method of transmitting ATM cells to selected remotes in a broadcast mode comprising the steps of:
- creating at the base station an extended ATM cell;
- examining the switch tag and generating from it an output channel identifier;
- embedding the output channel identifier in the header of the extended ATM cell;
- using the output channel identifier as an index to a first look up table for selecting a broadcast domain and as an index to a second look up table for selecting a TRPI;
- and,
- broadcasting in the selected broadcast domain from the base station, the ATM cell including the TRPI, wherein the TRPI is a BRSI or a RSI.
A communication system with a base station and plurality of remote stations, said system comprising:
- a first look up table comprising entries relating output channel identifiers to a first set of broadcast domains;
- a second look up table comprising entries relating output channel identifiers to a second set of temporary remote path identifiers;
- a first queue routing table;
- a switch fabric;
- a second queue routing table and a transmitter;
- wherein the second set of TRPI are remote station identifiers or broadcast remote station identifiers;
- wherein the first look up table, second look up table, the first queue routing table, the switch fabric, the second queue routing table and the transmitter are located central to the base station.
The system of 49 wherein the plurality of remote stations each comprise:
- a remote station identifier unique to each one of the plurality of remote stations
- a broadcast remote station identifier shared by one or more of the plurality of remote stations;
- a receiver;
- a first filter for accepting received signals where the TRPI matches the BRSI of the receiving remote station
- a second filter for accepting received signals with signals where the TRPI matches the RSI of the receiving remote station;
- and,
- a third filter for accepting a switch tag assigned to the remote station.
In an adaptive time division duplex communication system for broadband short distance radio communication of bursty data from one computer network to another computer network, with a base station and a plurality of remote stations, each remotes having a remote station identifier, a method of transmitting ATM cells to a selected remote in a broadcast mode where the cells are addressed without using the switch tag field bits in the ATM Cell header.
Dependencies are inferred from the claim text.