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US 7,742,452 B2Granted
System and method for dynamic preamble assignment
AssigneeMotorola, Inc.
InventorsEugene Visotsky, Shyamal Ramachandran, Philippe J. Sartori
Life of this patent
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Abstract
A method of operation of a multi-hop wireless communication system comprising operating a first device to communicate with one or more network devices using a preamble sequence; locating the first device within range of a network entity; and switching the preamble sequence of the first device to a second preamble for communicating with the one or more network devices.
Claims15
A method of operation of a relay station within a multi-hop wireless communication system comprising:
- communicating with a first network device using a first preamble;
- moving within range of a second network device;
- communicating the first preamble to the second network device;
- receiving a preamble switch message from the second network device when the second network device determines that the first preamble is included in a list of forbidden preambles, wherein the preamble switch message includes a second preamble, wherein the second preamble is included in a list of permissible preambles;
- switching to the second preamble for communicating with the second network device.
2 more elements
A method of operation of a multi-hop wireless communication system comprising:
- communicating by a relay station with one or more subscriber stations along each of a respective path using a current subscriber station directed preamble;
- initiating an association transfer between a base station and the relay station including the relay station providing the current subscriber station directed preamble to the base station;
- comparing by the base station the current subscriber station directed preamble to a list of forbidden preambles;
- selecting by the base station a second subscriber station directed preamble from a group of permissible preambles when the current subscriber station directed preamble is included in the list of forbidden preambles;
- sending a switch preamble instruction message including the second subscriber station directed preamble from the base station to the relay station;
- and
- switching by the relay station to the second subscriber station directed preamble for communication with the one or more subscriber stations along each of the same respective path.
4 more elements
Dependencies are inferred from the claim text.