Method and apparatus for facilitating a fair access to a channel by participating members of a group communication system
First Claim
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1. A method for facilitating a fair access to a channel by participating members of a group communication system, the members subject to differing transmission delays when communicating with a controller of the group communication system, the method comprising in the controller:
- adding a member-specific channel-access delay, comprising at least one of;
adding a first member-specific delay to a transmission of a free channel indication from the controller to a member after the channel becomes free; and
adding a second member-specific delay before processing a request to talk received by the controller from the member; and
selecting the member-specific channel-access delay such that a time required for the member to gain access to the channel after the channel becomes free is essentially equal to the time required for any other participating member to gain access to the channel after the channel becomes free.
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Abstract
To facilitate fair access to a channel, a controller (200) adds a member-specific channel-access delay, including adding at least one of a first member-specific delay (308) to a transmission of a free channel indication from the controller to a member (118-128) after the channel becomes free; and a second member-specific delay (314) before processing a request to talk received by the controller from the member. The controller selects (302) the member-specific channel-access delay such that a time required for the member to gain access to the channel after the channel becomes free is essentially equal to the time required for any other participating member to gain access to the channel after the channel becomes free.
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Citations
19 Claims
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1. A method for facilitating a fair access to a channel by participating members of a group communication system, the members subject to differing transmission delays when communicating with a controller of the group communication system, the method comprising in the controller:
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adding a member-specific channel-access delay, comprising at least one of;
adding a first member-specific delay to a transmission of a free channel indication from the controller to a member after the channel becomes free; and
adding a second member-specific delay before processing a request to talk received by the controller from the member; and
selecting the member-specific channel-access delay such that a time required for the member to gain access to the channel after the channel becomes free is essentially equal to the time required for any other participating member to gain access to the channel after the channel becomes free. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A controller for facilitating a fair access to a channel by participating members of a group communication system, the members subject to differing transmission delays when communicating with the controller, the controller comprising:
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a communication interface for communicating channel access information with the members; and
a processor coupled to the communication interface for processing the channel access information, wherein the processor is programmed to;
add a member-specific channel-access delay, comprising at least one of;
a first member-specific delay to a transmission of a free channel indication from the controller to a member after the channel becomes free; and
a second member-specific delay before processing a request to talk received by the controller from the member; and
select the member-specific channel-access delay such that a time required for the member to gain access to the channel after the channel becomes free is essentially equal to the time required for any other participating member to gain access to the channel after the channel becomes free. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A software program for facilitating a fair access to a channel by participating members of a group communication system, the members subject to differing transmission delays when communicating with a controller of the group communication system, wherein the software program, when installed and executing in the controller, causes the controller to:
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add a member-specific channel-access delay, comprising at least one of;
a first member-specific delay to a transmission of a free channel indication from the controller to a member after the channel becomes free; and
a second member-specific delay before processing a request to talk received by the controller from the member; and
select the member-specific channel-access delay such that a time required for the member to gain access to the channel after the channel becomes free is essentially equal to the time required for any other participating member to gain access to the channel after the channel becomes free. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification
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Current AssigneeMotorola, Inc. (Motorola Solutions, Inc.)
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Original AssigneeMotorola, Inc. (Motorola Solutions, Inc.)
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InventorsBennett, Rich, Dorenbosch, Jheroen P.
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Application NumberUS10/183,201Publication NumberTime in Patent OfficeDaysField of SearchUS Class Current370/329CPC Class CodesH04W 74/0883 for un-synchronized accessH04W 84/08 Trunked mobile radio systems
