US5635914A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for dynamic group calling in a selective call system
Assignee: Motorola Mobility LLC
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Filing: 1995-08-18
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Granted: 1997-06-03
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Expires: 2015-08-18
Abstract
Abstract A selective call system provides dynamic group calling by transmitting a paging message (FIG. 10) to each data communication receiver in a defined group. The paging message comprises a group call address (1040) and frame (1050) and phase (1060) information identifying when the group message will be transmitted. The group call message is then transmitted (326, 328) in the assigned frame and phase. When the paging messages comprising the group call address are received (1904) by the data communication receivers, the group call address is decoded and temporarily stored (1910) as an address of the receiver. Within the identified frame and phase, address correlation with the group call address is attempted (1918, 1926) and the group call message, when found (1920), is received and decoded (1922) as a paging message. After reception of the group call message, the group call address and associated stored information is erased (1924).
Inventors
- 👤 David R. Petreye
- 👤 David F. Willard
- 👤 Barbara D. Laflin
- 👤 Marcus A. Gade
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:55
CPC Classifications
H; H04; H04W; H04W88/00; H04W88/18; H04W88/185; H04W88/187; H04L; H04L12/00; H04L12/02; H04L12/16; H04L12/18; H04L12/1813; H04L12/1818; H04M; H04M11/00; H04M11/02; H04M11/022; H04M3/00; H04M3/42
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
112 words
A method in a selective call receiver receiving a selective call signal, the selective call receiver having at least one selective call address assigned thereto, the method comprising the steps of: (a) decoding the selective call signal for the at least one assigned selective call address; (b) decoding a selective call message comprising a group call address in response to decoding of one of the at least one assigned selective call address; (c) storing the group call address; (d) decoding the selective call signal for the group call address; and (e) automatically erasing the group call address after receiving a group call message in response to decoding of the group call address.
Claim 2
Independent Claim
112 words
A method in a selective call receiver receiving a selective call signal, the selective call receiver having at least one selective call address assigned thereto, the method comprising the steps of: (a) decoding the selective call signal for the at least one assigned selective call address; (b) decoding a selective call message comprising a group call address in response to decoding of one of the at least one assigned selective call address; (c) storing the group call address; (d) decoding the selective call signal for the group call address; and (e) automatically erasing the group call address after receiving a group call message in response to decoding of the group call address.
Claim 3
Dependent Claim
77 words
The method of claim 1 wherein the selective call signal comprises a plurality of flees and each of the at least one selective call address corresponds to one of the plurality of frames, and wherein the step (a) of decoding the selective call signal comprises decoding the selective call signal for the at least one assigned selective call address during the one of the plurality of frames corresponding to the at least one assigned selective call address.
Claim 4
Dependent Claim
80 words
The method of claim 2 wherein the step (b) of decoding the selective call message comprises decoding a group call address and frame identification information in response to decoding of one of the at least one assigned selective call address, and wherein the step (d) of decoding the selective call signal for the group call address comprises decoding the selective call signal for the group call address during one of the plurality of frames identified by the frame identification information.
Claim 5
Dependent Claim
95 words
The method of claim 2 wherein each of the plurality of frames comprises a plurality of phases and each of the at least one selective call address corresponds to one of the plurality of frames and one of the plurality of phases therein, and wherein the step (a) of decoding the selective call signal comprises decoding the selective call signal for the at least one assigned selective call address during the one of the plurality of phases of the one of the plurality of frames corresponding to the at least one assigned selective call address.
Claim 6
Dependent Claim
113 words
The method of claim 4 wherein the step (b) of decoding the selective call message comprises decoding a group call address, frame identification information, and phase identification information in response to a successful decoding of one of the at least one assigned selective call address, and wherein the step (d) of decoding the selective call signal for the group call address comprises decoding the selective call signal for the group call address during one of the plurality of phases of one of the plurality of flames, the one of the plurality of frames identified by the frame identification information and the one of the plurality of phases identified by the phase identification information.
Claim 7
Dependent Claim
216 words
A selective call receiver having at least one selective call address assigned thereto, the selective call receiver comprising: receiver circuitry for receiving a selective call signal; a first memory for storing the at least one selective call address assigned to the selective call receiver; an address decoder coupled to the first memory means and the receiver means for determining whether the selective call signal comprises signals matches one of the at least one selective call address; a message decoder coupled to the address decoder for decoding a selective call message in response to the address decoder determining that the selective call signal comprises signals matching one of the at least one selective call address; a second memory coupled to the message decoder for storing the selective call message; and a controller coupled to the second memory and the address decoder for determining whether the selective call message is a group call address, for providing the group call address to the address decoder as one of the at least one selective call address in response to determining the selective call message is a group call address, and for automatically erasing the group call address from the second memory in response to the address decoder determining that the selective call signal comprises signals matching the group call address.
Claim 8
Dependent Claim
216 words
A selective call receiver having at least one selective call address assigned thereto, the selective call receiver comprising: receiver circuitry for receiving a selective call signal; a first memory for storing the at least one selective call address assigned to the selective call receiver; an address decoder coupled to the first memory means and the receiver means for determining whether the selective call signal comprises signals matches one of the at least one selective call address; a message decoder coupled to the address decoder for decoding a selective call message in response to the address decoder determining that the selective call signal comprises signals matching one of the at least one selective call address; a second memory coupled to the message decoder for storing the selective call message; and a controller coupled to the second memory and the address decoder for determining whether the selective call message is a group call address, for providing the group call address to the address decoder as one of the at least one selective call address in response to determining the selective call message is a group call address, and for automatically erasing the group call address from the second memory in response to the address decoder determining that the selective call signal comprises signals matching the group call address.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-06-02 | 2000-12-02 | 2001-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-06-02 | 2004-12-02 | 2005-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-06-02 | 2008-12-02 | 2009-06-03 | $7700.00 | Window Closed / Lapsed |