US5357513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transmission power level adjustment in radio telephony
Assignee: The AT&T MVPD Group LLC
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Filing: 1993-09-09
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Granted: 1994-10-18
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Expires: 2013-09-09
Abstract
Abstract A mobile telephone system multiplexes plural voice traffic channels on a single carrier using a TDMA protocol. The capacity of the mobile telephone system is increased by assigning voice traffic capacity, not on a conversation basis, but on a speech spurt basis. Accordingly, delays of undetermined duration may occur between subsequent information bursts which correspond to the transmission of speech spurts. An adjustment request regarding the power with which the information bursts are transmitted from a transmitting station to a receiving station is generated by detecting an information burst transmission at the receiving station, measuring the time which elapses following the transmission, and comparing the elapsed time with a predetermined threshold value. If the elapsed time exceeds the threshold, a further transmission is requested from the transmitting station notwithstanding the availability of any information to transmit. The power of the transmission received in response to the request is measured and a control message for requesting an adjustment to the transmission power level in response to the measurement is transmitted to the transmitting station.
Inventors
- 👤 Stanley E. Kay
- 👤 John E. Corrigan, III
- 👤 Daniel R. Wendling
- 👤 Ashok D. Mehta
- 👤 Michael I. Parr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:53
CPC Classifications
G; G10; G10L; G10L19/00; G10L19/012; H; H04; H04B; H04B7/00; H04B7/24; H04B7/26; H04B7/2643; H04J; H04J3/00; H04J3/17; H04J3/172; H04W; H04W72/00; H04W72/04; H04W72/044; H04W72/20; H04W28/00; H04W28/02; H04W28/06; H04W72/21; H04W72/23
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
157 words
In a radio telephony system having a plurality of transmitting stations, each station transmitting information bursts to another station, the bursts being transmitted on radio carrier frequencies divided into time slots for carrying the information bursts wherein delays of undetermined duration may occur between subsequent information bursts, a method for generating an adjustment request regarding the power with which the information bursts are transmitted from a transmitting station to a receiving station comprising: detecting an information burst transmission at the receiving station; measuring the time which elapses following the detected information burst; comparing the elapsed time with a predetermined threshold value; if the elapsed time exceeds the threshold, requesting a further transmission from the transmitting station; if a response is received to the request for a further transmission, measuring the power of the received response; transmitting to the transmitting station a control message for requesting an adjustment to the transmission power level in response to the measurement.
Claim 2
Dependent Claim
157 words
In a radio telephony system having a plurality of transmitting stations, each station transmitting information bursts to another station, the bursts being transmitted on radio carrier frequencies divided into time slots for carrying the information bursts wherein delays of undetermined duration may occur between subsequent information bursts, a method for generating an adjustment request regarding the power with which the information bursts are transmitted from a transmitting station to a receiving station comprising: detecting an information burst transmission at the receiving station; measuring the time which elapses following the detected information burst; comparing the elapsed time with a predetermined threshold value; if the elapsed time exceeds the threshold, requesting a further transmission from the transmitting station; if a response is received to the request for a further transmission, measuring the power of the received response; transmitting to the transmitting station a control message for requesting an adjustment to the transmission power level in response to the measurement.
Claim 3
Dependent Claim
51 words
The method as recited in claim 1 wherein the step of requesting a further transmission comprises selecting a time slot from among a plurality of control channels, each control channel comprising an identified sequence of time slots, the control channel time slots being excluded from slots for transmission of information bursts.
Claim 4
Dependent Claim
18 words
The method as recited in claim 2 wherein each control channel is transmitted on a different carrier frequency.
Claim 5
Dependent Claim
25 words
The method as recited in claim 2 further comprising the step of also transmitting the request in a time slot of a second control channel.
Claim 6
Dependent Claim
34 words
The method as recited in claim 1 wherein the step of requesting a further transmission further comprises identifying an information channel for the transmission, the information channel comprising a predetermined sequence of time slots.
Claim 7
Dependent Claim
59 words
The method as recited in claim 1 wherein the time slots are grouped into channels each channel comprising an identified sequence of time slots, the method further comprising, before the step of selecting a first slot, the step of transmitting an identification of each channel within a predetermined set of channels for use in transmitting information between the stations.
Claim 8
Dependent Claim
36 words
The method as recited in claim 6 wherein the step of transmitting an identification further comprises transmitting an abbreviated code for identifying channels in subsequent transmissions and an abbreviated code for station identification in subsequent transmissions.
Claim 9
Dependent Claim
15 words
The method as recited in claim 1 wherein the information burst comprises a speech spurt.
Claim 10
Dependent Claim
18 words
The method as recited in claim 8 wherein the step of detecting an information burst comprises detecting speech.
Claim 11
Dependent Claim
17 words
The method as recited in claim 1 wherein the transmitting station comprises a cellular telephone subscriber unit.
Claim 12
Dependent Claim
21 words
The method as recited in claim 1 wherein the receiving station comprises a cellular telephony base station and base station controller.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-10-17 | 1998-04-18 | 1998-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-10-17 | 2002-04-18 | 2002-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-10-17 | 2006-04-18 | 2006-10-18 | $7700.00 | Window Closed / Lapsed |