Patent US5933418A successfully refreshed from Google Patents.
US5933418A
Expired / Lapsed
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Method for increasing control channel capacity in a communication system
Assignee: Ericsson Inc
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Filing: 1996-11-15
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Granted: 1999-08-03
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Expires: 2016-11-15
Abstract
Abstract A method for increasing the control channel capacity of a control station in a communications system. According to the method, in an idle mode of operation, a mobile station receives and processes data during more than one time slot per frame. As a result, additional channel structures are made possible such that additional data can be broadcast to a mobile station without restructuring a conventional slot format.
Inventors
- 👤 Larry William Massingill
- 👤 Torbjorn Wilson Solve
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:54
CPC Classifications
H; H04; H04W; H04W48/00; H04W48/08; H04W48/12; H04W68/00
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
101 words
A method for transmitting data from a control station to a transmitter/receiver in a TDMA communications system, comprising the steps of: during a transmitter/receiver active mode, transmitting control data from the control station to the transmitter/receiver during a first time slot of each TDMA frame; and during a transmitter/receiver idle mode, transmitting control data from the control station to the transmitter/receiver during a first time slot and a second time slot of each TDMA frame, with the second time slot being a time slot during which the transmitter/receiver receives and transmits traffic signals when the transmitter/receiver is in the active mode.
Claim 2
Independent Claim
101 words
A method for transmitting data from a control station to a transmitter/receiver in a TDMA communications system, comprising the steps of: during a transmitter/receiver active mode, transmitting control data from the control station to the transmitter/receiver during a first time slot of each TDMA frame; and during a transmitter/receiver idle mode, transmitting control data from the control station to the transmitter/receiver during a first time slot and a second time slot of each TDMA frame, with the second time slot being a time slot during which the transmitter/receiver receives and transmits traffic signals when the transmitter/receiver is in the active mode.
Claim 3
Dependent Claim
24 words
The method of claim 1, wherein the second time slot and the first time slot are separated by one half of a TDMA frame.
Claim 4
Dependent Claim
38 words
The method of claim 1, wherein the first time slot is transmitted on a first carrier frequency, and the second time slot is transmitted on a second carrier frequency, wherein the first and second carrier frequencies are synchronized.
Claim 5
Dependent Claim
37 words
The method of claim 3, wherein the first time slot and the second time slot are sufficiently separated to allow the transmitter/receiver to adjust its receiver frequency from the first carrier frequency to the second carrier frequency.
Claim 6
Dependent Claim
12 words
The method of claim 1, wherein the data includes control channel data.
Claim 7
Dependent Claim
36 words
The method of claim 1, further comprising the step of transmitting control channel data during the idle mode on a channel comprised of the first and second slots of each of a plurality of TDMA frames.
Claim 8
Dependent Claim
14 words
The method of claim 6, wherein the first and second slots are not adjacent.
Claim 9
Dependent Claim
19 words
The method of claim 1, wherein the transmitter/receiver is a mobile terminal and the control station is a satellite.
Claim 10
Independent Claim
105 words
A method for transmitting communication information from a control station to a transmitter/receiver in a TDMA communication system, comprising the steps of: transmitting control information over a primary control channel comprised of one time slot from each of a plurality of TDMA frames, the primary control channel including common control channel information and original broadcast control channel information transmitted at a first power level, and a version of the original broadcast control channel information at a second power level; and transmitting paging information over one or more paging channels comprised of one or more other time slots from each of a plurality of TDMA frames.
Claim 11
Independent Claim
105 words
A method for transmitting communication information from a control station to a transmitter/receiver in a TDMA communication system, comprising the steps of: transmitting control information over a primary control channel comprised of one time slot from each of a plurality of TDMA frames, the primary control channel including common control channel information and original broadcast control channel information transmitted at a first power level, and a version of the original broadcast control channel information at a second power level; and transmitting paging information over one or more paging channels comprised of one or more other time slots from each of a plurality of TDMA frames.
Claim 12
Dependent Claim
20 words
The method of claim 9, wherein the paging channels are transmitted on the same carrier as the primary control channel.
Claim 13
Dependent Claim
19 words
The method of claim 9, wherein the transmitter/receiver is a mobile terminal and the control station is a satellite.
Claim 14
Dependent Claim
52 words
The method of claim 9, wherein the one or more paging channels are transmitted on one or more different carriers than the primary control channel, and further comprising the step of determining, at the transmitter/receiver, the different carrier associated with the transmitter/receiver from the version of the original broadcast control channel information.
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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) | 2002-08-02 | 2003-02-01 | 2003-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-08-02 | 2007-02-01 | 2007-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-08-02 | 2011-02-01 | 2011-08-03 | $7700.00 | Window Closed / Lapsed |