System and method for managing affiliation requests in a communication system
First Claim
1. A method for managing call affiliations at a first communication unit in a communication system comprising:
- operating the first communication unit on a first communication channel;
receiving a broadcast data message on the first communication channel instructing the first communication unit to affiliate to a voice call talkgroup;
initiating a random affiliation request timer, wherein an affiliation request is transmitted by the first communication unit on a control channel upon expiration of the random affiliation request timer, the affiliation request being configured to request affiliation of the first communication unit to the voice call talkgroup indicated in the broadcast data message;
monitoring the control channel for a presence of an affiliation grant being transmitted to the first communication unit or to a second communication unit attempting to affiliate to the voice call talkgroup; and
joining the voice call talkgroup on a second communication channel upon either;
(1) receiving the affiliation grant in response to the affiliation request transmitted by the first communication unit, or (2) detecting the affiliation grant being transmitted to the second communication unit attempting to affiliate to the voice call talkgroup.
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Accused Products
Abstract
A system and method for managing call affiliation in a communication system having a plurality of communication units. When a public call announcement is initiated, a broadcast data message is transmitted to the communication units identifying a public announcement talkgroup for the call. Upon receiving the broadcast data message, each of the communication units waits a random amount of time before attempting to affiliate to the public announcement talkgroup. At the same time, each communication unit also monitors other messages on the control channel. Each communication unit joins the public announcement talkgroup upon the first of either (1) receiving an affiliation grant in response to an affiliation request transmitted by the communication unit, or (2) detecting an affiliation grant being transmitted to a different communication unit attempting to affiliate to the same talkgroup.
10 Citations
20 Claims
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1. A method for managing call affiliations at a first communication unit in a communication system comprising:
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operating the first communication unit on a first communication channel; receiving a broadcast data message on the first communication channel instructing the first communication unit to affiliate to a voice call talkgroup; initiating a random affiliation request timer, wherein an affiliation request is transmitted by the first communication unit on a control channel upon expiration of the random affiliation request timer, the affiliation request being configured to request affiliation of the first communication unit to the voice call talkgroup indicated in the broadcast data message; monitoring the control channel for a presence of an affiliation grant being transmitted to the first communication unit or to a second communication unit attempting to affiliate to the voice call talkgroup; and joining the voice call talkgroup on a second communication channel upon either;
(1) receiving the affiliation grant in response to the affiliation request transmitted by the first communication unit, or (2) detecting the affiliation grant being transmitted to the second communication unit attempting to affiliate to the voice call talkgroup. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system for managing call affiliations comprising:
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a base site; a plurality of communication units in wireless communication with the base site; and a zone controller coupled to the base site, the zone controller being configured to (a) cause a broadcast data message to be transmitted from the base site to the plurality of communication units instructing the plurality of communication units to affiliate to a voice call talkgroup, (b) receive affiliation requests from at least one of communication units via the base site, and (c) in response to receiving an affiliation request from a communication unit, cause an affiliation grant to be transmitted to the communication unit that initiated the affiliation request; wherein, in response to receiving the broadcast data message, each of the plurality of communication units is configured to (a) initiate a random affiliation request timer, whereby the affiliation request is transmitted on a control channel upon expiration of the random affiliation request timer, (b) monitor the control channel for a presence of the affiliation grant being transmitted to any one of the plurality of communication units attempting to affiliate to the voice call talkgroup, and (c) join the voice call talkgroup upon detecting the affiliation grant being transmitted to any one of the plurality of communication units attempting to affiliate to the voice call talkgroup. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A communication system comprising a first communication unit being in wireless communication with at least one base site, the communication unit being configured to (a) receive a broadcast data message on a broadcast communication channel instructing the first communication unit to affiliate to a voice call talkgroup;
- (b) initiate a random affiliation request timer, wherein an affiliation request is transmitted by the first communication unit on a control channel upon expiration of the random affiliation request timer, (c) monitor the control channel for the presence of an affiliation grant being transmitted to the first communication unit or to a second communication unit attempting to affiliate to the voice call talkgroup; and
(d) join the voice call talkgroup on a voice communication channel upon detecting the affiliation grant being transmitted to either of the first communication unit or the second communication unit attempting to affiliate to the voice call talkgroup. - View Dependent Claims (17, 18, 19, 20)
- (b) initiate a random affiliation request timer, wherein an affiliation request is transmitted by the first communication unit on a control channel upon expiration of the random affiliation request timer, (c) monitor the control channel for the presence of an affiliation grant being transmitted to the first communication unit or to a second communication unit attempting to affiliate to the voice call talkgroup; and
Specification