Method and apparatus for multiple access in a communication system
First Claim
1. In a communication system in which a plurality of remote units transmit data to a hub station, a method of communicating comprising:
- transmitting a block of data from at least one of said remote units to the hub station over a contention-type access communication resource;
transmitting a notification message from said at least one remote unit to the hub station over a first non-contention access channel to notify the hub station of transmitting said block of data over said contention-type access communication resource; and
in response to receiving said notification message, determining, in said hub station, whether transmitting said block of data over said contention-type communication resource was successful, and transmitting a response message from the hub station to the remote unit to command the remote unit to transmit said block of data over a resource within a second non-contention access communication resource if transmitting said block of data over said contention-type access communication resource was unsuccessful, whereby said remote unit becomes configured to communicate with said hub station using a non-contention communication resource while other remote units of the system remain configured to communicate with the hub station using a contention communication resource.
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Abstract
A communication system comprising three communication resources: a contention-type access block, a non-contention access block and a second non-contention access block called a reserved block. Each time that a remote unit has a block of data to transfer to a hub station, it sends the block of data over the contention-type access block. It also sends a corresponding notification message over the reserved block. If the hub station receives the notification message but not the block of data, it sends a response message to the remote unit which designates a resource within the non-contention access block. The remote unit then sends the block of data to the hub station over the designated resource.
221 Citations
19 Claims
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1. In a communication system in which a plurality of remote units transmit data to a hub station, a method of communicating comprising:
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transmitting a block of data from at least one of said remote units to the hub station over a contention-type access communication resource;
transmitting a notification message from said at least one remote unit to the hub station over a first non-contention access channel to notify the hub station of transmitting said block of data over said contention-type access communication resource; and
in response to receiving said notification message, determining, in said hub station, whether transmitting said block of data over said contention-type communication resource was successful, and transmitting a response message from the hub station to the remote unit to command the remote unit to transmit said block of data over a resource within a second non-contention access communication resource if transmitting said block of data over said contention-type access communication resource was unsuccessful, whereby said remote unit becomes configured to communicate with said hub station using a non-contention communication resource while other remote units of the system remain configured to communicate with the hub station using a contention communication resource. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. In a system in which multiple remote units compete for limited communication resources, a method of accessing the system by a remote unit comprising:
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transmitting a block of data over a contention-type access communication resource;
transmitting a corresponding notification message over a reserved communication resource, wherein said set of resources allocated to said reserved communication resource constitute less than about 5% of said limited communication resources;
receiving a response message which commands transmission of said block of data over a resource within a non-contention access communication resource in response to successful reception of said corresponding notification message and failed reception of said block of data; and
transmitting said block of data over said non-contention access communication resource.
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Specification