US6005848A
Expired / Lapsed
US
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Method and apparatus for a talkgroup call in a wireless CDMA system
Assignee: Google Technology Holdings LLC
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Filing: 1997-10-27
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Granted: 1999-12-21
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Expires: 2017-10-27
Abstract
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.
Inventors
- 👤 Gary W. Grube
- 👤 Richard A. Comroe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:07
CPC Classifications
H; H04; H04W; H04W4/00; H04W4/06; H04W8/00; H04W8/18; H04W8/186; H04M; H04M3/00; H04M3/42; H04M3/56; H04J; H04J13/00; H04J13/16
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
134 words
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.
Claim 2
Dependent Claim
134 words
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.
Claim 3
Dependent Claim
38 words
The method of claim 1, the step of identifying the talkgroup further comprising a step of indexing a table according to the identity of the talkgroup to select an entry uniquely associated with the identity of the talkgroup.
Claim 4
Dependent Claim
28 words
The method of claim 2, the step of identifying the sub-group further comprising a step of indexing the entry according to the identity of the first subscriber unit.
Claim 5
Dependent Claim
34 words
The method of claim 3, further comprising the step of identifying the sub-group that comprises stored identities of subscriber units of the talkgroup that have recently engaged in communications with the first subscriber unit.
Claim 6
Dependent Claim
36 words
The method of claim 3, further comprising the step of identifying the sub-group that comprises stored identities of subscriber units of the talkgroup having a priority level at least as high as the first subscriber unit.
Claim 7
Dependent Claim
34 words
The method of claim 3, further comprising the step of identifying the sub-group that comprise stored identities of subscriber units of the talkgroup having locations within a predetermined distance of the first subscriber unit.
Claim 8
Dependent Claim
53 words
The method of claim 1, further comprising steps of: receiving, based on the at least one inbound code, streams of voice information from subscriber units of the sub-group; summing the streams of voice information to produce summed voice information; and transmitting, based on the outbound code, the summed voice information to the talkgroup.
Claim 9
Dependent Claim
27 words
The method of claim 7, further comprising a step of de-assigning the outbound code and the at least one inbound code when the talkgroup call has ended.
Claim 10
Dependent Claim
75 words
The method of claim 7, further comprising steps of: receiving, from a second subscriber unit of the talkgroup but not of the sub-group, a request to talk; assigning an additional inbound code to the second subscriber unit; receiving, based on the additional inbound code, an additional stream of voice information from the second subscriber unit; and summing the streams of voice information and the additional stream of voice information to produce the summed voice information.
Claim 11
Dependent Claim
31 words
The method of claim 9, further comprising a step of de-assigning the outbound code, the at least one inbound code and the additional inbound code when the talkgroup call has ended.
Claim 12
Dependent Claim
129 words
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.
Claim 13
Dependent Claim
129 words
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.
Claim 14
Dependent Claim
22 words
The method of claim 11, further comprising a step of monitoring outbound communications of the talkgroup call based on the outbound code.
Claim 15
Dependent Claim
31 words
The method of claim 11, further comprising a step of receiving, from the fixed infrastructure, a de-assignment of the outbound code and the inbound code when the talkgroup call has ended.
Claim 16
Dependent Claim
98 words
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.
Claim 17
Dependent Claim
98 words
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.
Claim 18
Dependent Claim
16 words
The wireless code-division multiple access system of claim 14, the fixed infrastructure further comprising a controller.
Claim 19
Dependent Claim
72 words
The wireless code-division multiple access system of claim 14, the fixed infrastructure further comprising: means for summing streams of voice information received, based on the at least one inbound code, from subscriber units of the sub-group to provide summed voice information; and a transmitter, operably coupled to the means for summing and in wireless communication with the talkgroup, to provide the summed voice information to the talkgroup based on the outbound code.
Claim 20
Dependent Claim
131 words
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.
Claim 21
Dependent Claim
131 words
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.
Claim 22
Dependent Claim
22 words
The subscriber unit of claim 17, further comprising means for monitoring outbound communications of the talkgroup call based on the outbound code.
Claim 23
Dependent Claim
31 words
The subscriber unit of claim 17, further comprising means for receiving a de-assignment of the outbound code and the inbound code from the fixed infrastructure when the talkgroup call has ended.
References Cited (Backward Citations)
US5506837A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-12-20 | 2003-06-21 | 2003-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-12-20 | 2007-06-21 | 2007-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-12-20 | 2011-06-21 | 2011-12-21 | $7700.00 | Window Closed / Lapsed |