Multiple access communication on a CATV reverse channel
First Claim
1. A method of multiple access communication for communicating information from a plurality of transmitters coupled over a common communication link to a receiver location comprising:
- transmitting from a transmitter, with information to transmit, at an arbitrary time, over said communication link,initiating a sequence of retransmissions at said transmitter, said sequence terminating on receipt of an acknowledgement from said receiver, wherein at least some of said sequential retransmissions are spaced by increasingly longer delays.
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Accused Products
Abstract
A multiple access communications system links a plurality of geographically dispersed subscriber locations (each of which including a transmitter and receiver) with a central location (also including a transmitter and receiver). Multiple access communication is required in the direction from the subscriber transmitters to the central receiver. In order to maintain stability, a subscriber/transmitter which unsuccessfully transmits (due to a collision with a transmission from another subscriber) will retransmit. Multiple succeeding unsuccessful transmissions at any subscriber result at that subscriber in increasingly longer delays between successive transmissions.
210 Citations
26 Claims
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1. A method of multiple access communication for communicating information from a plurality of transmitters coupled over a common communication link to a receiver location comprising:
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transmitting from a transmitter, with information to transmit, at an arbitrary time, over said communication link, initiating a sequence of retransmissions at said transmitter, said sequence terminating on receipt of an acknowledgement from said receiver, wherein at least some of said sequential retransmissions are spaced by increasingly longer delays. - View Dependent Claims (2, 3, 4, 5, 6, 19, 20, 21, 22)
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7. Apparatus for multiple access communication for communicating information from a plurality of transmitters coupled over a common communication link to a head end receiver comprising:
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first means for transmitting from a transmitter, with information to transmit, at an arbitrary time, second means for initiating a sequence of repeated retransmissions from said transmitter, said sequence terminating upon receipt of an acknowledgement from said head end receiver, said second means including delay means for producing at least some of said sequential retransmissions spaced by increasingly longer delays. - View Dependent Claims (8, 9, 10, 11, 12, 13, 23, 24)
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14. A method of providing multiple access communication on the reverse channel of a RF cable to a receiver located at a head end of said RF cable comprising the steps of:
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transmitting from a transmitter with information to transmit at an arbitrary time, initiating a sequence of retransmissions from said transmitter, said sequence of retransmissions terminating on reception of an acknowledgement from said head end receiver, each of said retransmissions delayed from a preceding retransmission by a delay D, at least some of said delays D longer than a preceding delay at least by the length of a delay preceding said preceding delay. - View Dependent Claims (15, 16, 17, 18, 25, 26)
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Specification