Sub-frame synchronized multiplexing
First Claim
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1. A method of communication, the method comprising:
- transmitting a communication signal having a synchronization preamble from a first node;
setting a local clock of at least one second node pursuant to the synchronization preamble to synchronize communications between the first and at least one second node;
exchanging subsequent data communications between the first and at least one second node without additional preambles until a special switch point occurs; and
after the special switch point occurs, exchanging information that utilizes the period of reduced time-synchronization accuracy following data communication.
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Abstract
A method of communication that includes transmitting a communication signal having a synchronization preamble from a first node. Setting a local clock of at least one second node pursuant to the synchronization preamble to synchronize communications between the first and at least one second node. Exchanging subsequent data communications between the first and at least one second node without additional preambles until a special switch point occurs and after the special switch point occurs, transmitting information that utilizes the period of reduced time-synchronization accuracy following data communication.
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Citations
26 Claims
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1. A method of communication, the method comprising:
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transmitting a communication signal having a synchronization preamble from a first node;
setting a local clock of at least one second node pursuant to the synchronization preamble to synchronize communications between the first and at least one second node;
exchanging subsequent data communications between the first and at least one second node without additional preambles until a special switch point occurs; and
after the special switch point occurs, exchanging information that utilizes the period of reduced time-synchronization accuracy following data communication. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of communication between nodes during a residual time synchronization period, the method comprising:
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issuing a residual switch point with a node to initiate information exchange that can occur during the residual time synchronization period;
starting a schedule timer in each node in response to the residual switch point; and
performing activities at each node based on select schedule entries in a received schedule and the schedule timer in each node. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. A communication node comprising:
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a local clock adapted to clock operations of the communication node;
a transmitter/receiver circuit adapted to selectively transmit and receive communication signals;
a synchronization circuit adapted to synchronize the local clock with a received communication signal from another communication node to establish communications between the communication nodes; and
a control circuit adapted to control the transmitter/receiver circuit and the synchronization circuit, the control circuit being adapted to process communication signals, the control circuit further adapted to direct communications between the communication nodes without re-synchronizing the local clock for a period of time, the control circuit further adapted to exchange information in response to a special switch point. - View Dependent Claims (17, 18)
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19. A communication system comprising:
at least two communication nodes, each node being adapted to synchronize a local clock to establish communications based on a synchronizing preamble received in an initial communication frame, each node further adapted to receive and transmit communication sub-frames based on a residual switch point. - View Dependent Claims (20, 21, 22, 23)
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24. A communication system comprising:
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a means for providing ultra wide band data communication for a period of time between two or more nodes with only sub-frame signals after an initial signal with a pre-amble establishes synchronization between the nodes; and
a means for exchanging other information that requires less precision of time synchronization than required for data communication based on a special switch point. - View Dependent Claims (25, 26)
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Specification