Method and apparatus for a talkgroup call in a wireless communication system
First Claim
1. In a wireless communication system comprising a plurality of subscriber units in wireless communication with a fixed infrastructure, a method for the fixed infrastructure to establish a talkgroup call, the method comprising steps of:
- receiving, from a first subscriber unit of the plurality of subscriber units, a request for the talkgroup call, the request comprising an identity of the first subscriber unit and an identity of a talkgroup;
identifying, based on the identity of the talkgroup, a talkgroup of subscriber units comprising at least two subscriber units of the plurality of subscriber units;
identifying, based on the identity of the first subscriber unit, a sub-talkgroup of subscriber units of the talkgroup;
assigning an outbound code to subscribers in the talkgroup not part of the sub-talkgroup;
assigning a plurality of outbound codes in a one-to-one manner to subscribers in the sub-talkgroup; and
assigning, in a one-to-one manner, at least one inbound code to the sub-talkgroup.
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Accused Products
Abstract
In a wireless code-division multiple access (CDMA) system (100), a talkgroup (101) of subscriber units is provided. A sub-talkgroup (102) of subscriber units, forming a part of the talkgroup is assigned at least one inbound channel (416-417). The talkgroup is assigned outbound channels (415). Members of the sub-talkgroup may simultaneously transmit voice information (410-411) using the at least one inbound channel, which voice information is summed (412) and re-transmitted to the talkgroup using the outbound channels. Voice information is summed so that an individual talker receives summed voice information without the individual subscriber'"'"'s voice content. Subscriber units in the sub-listengroup are allowed to transmit voice information only after requesting, and receiving, an additional inbound channel.
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Citations
14 Claims
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1. In a wireless communication system comprising a plurality of subscriber units in wireless communication with a fixed infrastructure, a method for the fixed infrastructure to establish a talkgroup call, the method comprising steps of:
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receiving, from a first subscriber unit of the plurality of subscriber units, a request for the talkgroup call, the request comprising an identity of the first subscriber unit and an identity of a talkgroup;
identifying, based on the identity of the talkgroup, a talkgroup of subscriber units comprising at least two subscriber units of the plurality of subscriber units;
identifying, based on the identity of the first subscriber unit, a sub-talkgroup of subscriber units of the talkgroup;
assigning an outbound code to subscribers in the talkgroup not part of the sub-talkgroup;
assigning a plurality of outbound codes in a one-to-one manner to subscribers in the sub-talkgroup; and
assigning, in a one-to-one manner, at least one inbound code to the sub-talkgroup. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. In a wireless communication system comprising subscriber units in wireless communication with a fixed infrastructure, a method for the fixed infrastructure to establish a talkgroup call, the method comprising steps of:
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receiving inbound voice data from a plurality of subscriber units with a talkgroup, the inbound voice data comprising voice data from a first subscriber unit;
summing the inbound voice data to produce first summed voice data;
removing the first subscriber'"'"'s voice data from the summed voice data to produce second summed voice data;
transmitting the fist summed voice data to a plurality of subscriber units within the talkgroup that are not actively talking via a shared first communication channel; and
transmitting the second summed voice data to the first subscriber unit via a second communication channel.
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12. In a wireless communication system, a method comprising steps of:
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receiving inbound voice data from a plurality of subscriber units within a talkgroup, the inbound voice data comprising voice data from a first subscriber;
transmitting first summed voice data via a shared first communication channel to a plurality of subscriber within the talkgroup that are not actively talking, wherein the first summed voice data comprises a summation of a plurality of subscriber unit that are actively transmitting inbound voice; and
transmitting second summed voice data via a second one or more communication channels to one or more subscribers within the talkgroup that are actively talking, wherein the second summed voice data comprises the first summed data without a voice content of an individual talker. - View Dependent Claims (13)
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14. A wireless communication system comprising:
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a receiver having a voice signal from an individual subscriber and a plurality of other inbound voice signals as an input and outputting corresponding voice signals suitable for summing;
summation circuitry having the voice signals suitable for summing as an input and outputting a plurality of summed voice signals, wherein a summed voice signal of the plurality of summed voice signals comprises a summation of the plurality of other inbound voice signals minus the voice signal from the individual subscriber and wherein another summed voice signal of the plurality of summed voice signals comprises a summation of the plurality of other inbound voice signals and the voice signal from the individual subscriber; and
transmission circuitry that conveys to the individual subscriber via a first communication channel the summed voice signal comprising the summation of the plurality of other inbound voice signals minus the voice signal and that further conveys to a plurality of subscribers that are not actively talking via a shared second communication channel the summed voice signal comprising the summation of the other inbound voice signals and the voice signal from the individual subscriber.
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Specification