System and method for minimizing guard time in a time division duplex communication system
First Claim
1. A system for controlling scheduling of information communication in a time division duplex communication environment, said system comprising:
- a memory storing propagation delay information for a plurality of nodes in communication with a hub; and
a controller in communication with said memory and operable under control of an instruction set to determine a communication resource implementation to be implemented in said time division duplex communication environment to minimize a guard time thereof through reference to said stored propagation delay information.
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Abstract
Disclosed is a system and method for optimizing capacity in a multi-user time division duplex (“TDD”) communication system such as a broadband wireless radio frequency communication system. More specifically the invention minimizes guard time in duplexed signals to thereby allow for higher data throughput which results in an increase in system communication capacity. Depending upon instantaneous traffic load associated with the subscribers using a particular TDD carrier, guard times may be adjusted to provide a desired level of throughput. As traffic loads demand, the order of assignment of burst periods in either or both the transmit and receive frames of a TDD carrier with respect to the subscriber systems operable thereon are adjusted to accommodate desired guard times.
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Citations
47 Claims
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1. A system for controlling scheduling of information communication in a time division duplex communication environment, said system comprising:
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a memory storing propagation delay information for a plurality of nodes in communication with a hub; and
a controller in communication with said memory and operable under control of an instruction set to determine a communication resource implementation to be implemented in said time division duplex communication environment to minimize a guard time thereof through reference to said stored propagation delay information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for controlling the scheduling of information communication in a time division duplex communication environment, comprising the steps of:
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(a) storing propagation delay information with respect to a plurality of nodes in communication with a hub;
(b) monitoring instantaneous traffic demand associated with ones of said plurality of nodes; and
(c) determining a communication resource implementation to be implemented in said time division duplex communication environment to minimize a guard time thereof through reference to said stored propagation delay information and said instantaneous traffic demand, thereby controlling the scheduling of information communication in a time division duplex communication environment. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A system for providing information communication between a centralized communication system and a plurality of remote communication systems, said system comprising:
a processor based traffic scheduler in communication with said centralized communication system and monitoring instantaneous traffic demand associated with ones of said plurality of remote communication systems, wherein said traffic scheduler determines an assignment of resources for providing said information communication between said centralized communication system and ones of said plurality of remote communication systems as a function of said monitored instantaneous traffic demand. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
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44. In a time division duplex communication system comprising a centralized communication system and a plurality of remote communications systems and a guard time to prevent simultaneous communications, the improvement comprising the determination of a guard time for each remote communications system as a function of the propagation delay associated with each remote communications system.
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45. In a method of time division duplex communication between a centralized communication system and a plurality of remote communications systems, the improvement comprising the minimizing of guard time delay for a particular remote communications system as a function of both propagation delay for that remote communications system and the instantaneous traffic demand of that remote communications system.
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46. In a communication system with scheduled communication between a centralized communication system and a plurality of remote communications systems each having variable communications transmissions, the improvement wherein the communication scheduler assigns communication system resources as a function of the instantaneous remote system transmission demands.
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47. In a method of scheduling communication between a centralized communication system and a plurality of remote communications systems, each of the remote communications systems having variable communications transmissions, the improvement wherein the communication system resources are scheduled as a function of the instantaneous transmission demands of the remote communications systems.
Specification