초록 ▼

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). Member

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.

대표청구항 ▼

[ What is claimed is:] [1.]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 un

[ What is claimed is:] [1.]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 time slot in a frequency channel to subscribers in the sub-listengroup;assigning a plurality of outbound time slots in the frequency channel in a one-to-one manner to subscribers in the sub-talkgroup if there is more than one talker; andassigning, in a one-to-one manner, at least one inbound time slot in the frequency channel to the sub-talkgroup.