Method and apparatus for controlling information transmission on a multipoint link
First Claim
1. A method for controlling information transmission on a multipoint link by a first communication unit, comprising:
- (a) transmitting at least a portion of a group of signals, wherein the portion includes a first signal and each of a group of signals includes a base station identifier corresponding to a respective base station, at a first periodic rate, and, in response to a predetermined number of transmissions of the first signal followed by an acknowledgment response signal, cyclically transmitting the first signal at a second periodic rate, the second periodic rate being slower than the first periodic rate;
(b) detecting a response signal on the multipoint link being transmitted in response to the first signal;
(c) detecting one of a group consisting of an acknowledgment response signal and an information response signal; and
(d) detecting when the response signal is no longer being transmitted, and transmitting a next signal including a next identifier on the multipoint link.
4 Assignments
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Accused Products
Abstract
A method and apparatus for controlling communications on a multipoint communication link includes a multipoint link (29) coupling plural slave stations (11-13) and a master (10) having a communications controller (35) controlling signaling broadcast to slave stations (11-13) via an encoder (36). Broadcast signals (201-205) each include a time slot marker or identifier associated with a slave station. Master (10) monitors via detector (32) for response signals (211-213) within a window period, and when detected waits until an end of transmission and generates the next broadcast signal with an incremented marker. Master (10) also functions to cycle through broadcast signals to all slave stations (11-13) at an adaptive rate, e.g., more frequently for active as compared with idle or inactive slave stations.
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Citations
8 Claims
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1. A method for controlling information transmission on a multipoint link by a first communication unit, comprising:
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(a) transmitting at least a portion of a group of signals, wherein the portion includes a first signal and each of a group of signals includes a base station identifier corresponding to a respective base station, at a first periodic rate, and, in response to a predetermined number of transmissions of the first signal followed by an acknowledgment response signal, cyclically transmitting the first signal at a second periodic rate, the second periodic rate being slower than the first periodic rate; (b) detecting a response signal on the multipoint link being transmitted in response to the first signal; (c) detecting one of a group consisting of an acknowledgment response signal and an information response signal; and (d) detecting when the response signal is no longer being transmitted, and transmitting a next signal including a next identifier on the multipoint link. - View Dependent Claims (2, 3, 4)
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5. A communication unit capable of serving as a master to other communication units on a multipoint link, comprising:
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(a) transmitter means coupled to the multipoint link, for transmitting a first signal including a first identifier associated with a first slave communication unit on the multipoint link; (b) detector means coupled to the multipoint link, for detecting that a response signal to the first signal is being transmitted on the multipoint link and, when the response signal is detected, detecting that the response signal is no longer being transmitted; and (c) control means operatively coupled to the detector means and transmitter means, for controlling the transmitter means, in response to the detector means detecting that the response signal is no longer being transmitted, to transmit a next signal including a next identifier associated with another slave communication unit on the multipoint link, wherein the transmitter means comprises an encoder operable for receiving a first information signal component including a first time slot marker as the first identifier from the control means and encoding the first information signal components into the first signal. - View Dependent Claims (6, 7, 8)
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Specification