Method and apparatus for a talkgroup call in a wireless CDMA system
First Claim
1. In a wireless code-division multiple access 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-group of subscriber units of the talkgroup;
assigning an outbound code to the talkgroup; and
assigning, in a one-to-one manner, at least one inbound code to the sub-group.
4 Assignments
0 Petitions
Accused Products
Abstract
In a wireless code-division multiple access (CDMA) system (100), a talkgroup (101) of subscriber units is provided. A sub-group (102) of subscriber units, forming a part of the talkgroup is assigned at least one inbound code (416-417). The entire talkgroup is assigned an outbound code (415). Members of the sub-group may simultaneously transmit voice information (410-411) using the at least one inbound code, which voice information is summed (412) and re-transmitted to the talkgroup using the outbound code. Subscriber units in the talkgroup, but not included in the sub-group, are allowed to transmit voice information only after requesting, and receiving, an additional inbound code.
-
Citations
19 Claims
-
1. In a wireless code-division multiple access 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-group of subscriber units of the talkgroup; assigning an outbound code to the talkgroup; and assigning, in a one-to-one manner, at least one inbound code to the sub-group. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. In a wireless code-division multiple access system comprising a plurality of subscriber units in wireless communication with a fixed infrastructure, a method for a subscriber unit of the plurality of subscriber units to participate in a talkgroup call, the method comprising steps of:
-
receiving, from the fixed infrastructure, an assignment of an outbound code associated with the talkgroup call; transmitting, to the fixed infrastructure, a request to talk; receiving, from the fixed infrastructure, an assignment of an inbound code associated with the talkgroup call wherein the inbound code enables the subscriber unit to transmit voice information concurrent with the transmission of voice information by another subscriber unit of the plurality of subscriber units; and transmitting, to the fixed infrastructure, a stream of voice information based on the inbound code. - View Dependent Claims (12, 13)
-
-
14. A wireless code-division multiple access system comprising:
-
at least two subscriber units logically arranged into a talkgroup, the talkgroup further comprising a sub-group that is a subset of the talkgroup; and a fixed infrastructure, in wireless communication with the at least two subscriber units, that, upon receiving a request for a talkgroup call from a first subscriber unit of the at least two subscriber units, identifies the sub-group based on an identity of the first subscriber unit, assigns an outbound code to the talkgroup, and assigns at least one inbound code, in a one-to-one manner, to the sub-group. - View Dependent Claims (15, 16)
-
-
17. A subscriber unit for use in a wireless code-division multiple access system comprising a fixed infrastructure, the subscriber unit in wireless communication with the fixed infrastructure, the subscriber unit comprising:
-
means for receiving an assignment of an outbound code associated with a talkgroup call from the fixed infrastructure; means for transmitting a request to talk to the fixed infrastructure; means for receiving an assignment of an inbound code associated with the talkgroup call from the fixed infrastructure in response to the request to talk, wherein the inbound code enables the subscriber unit to transmit voice information concurrent with the transmission of voice information by another subscriber unit of the plurality of subscriber units; and means for transmitting a stream of voice information based on the inbound code to the fixed infrastructure. - View Dependent Claims (18, 19)
-
Specification