US5345600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for selectively-enabled diversity signaling in a radio communications system
Assignee: Google Technology Holdings LLC
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Filing: 1993-08-31
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Granted: 1994-09-06
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Expires: 2013-08-31
Abstract
Abstract In a radio communications system, a selectively enabled time- and/or frequency-diverse signaling scheme is employed to improve signal quality. In particular, a method of exchanging a message between communication devices using a communications resource might include the step of transmitting a first portion of the message on a first frequency within the communications resource. After determining the quality of the communications resource to be unfavorable, a second portion of the message might be transmitted on the first frequency, and also re-transmitted on a second frequency and/or at a separate time.
Inventors
- 👤 Allen L. Davidson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:40
CPC Classifications
H; H04; H04L; H04L1/00; H04L1/0001; H04B; H04B7/00; H04B7/02; H04B7/12; H04L1/02; H04L1/04; H04L1/0023; H04L1/0026
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
87 words
In a radio communications system, a method for exchanging a message between a plurality of communication devices using a communications resource, the method comprising the steps of: A) transmitting, from a first of the plurality of communication devices a first portion of the message on a first frequency within the communications resource; B) determining the quality of the communications resource; and C) when the quality of the communications resource is unfavorable, transmitting a second portion of the message on the first frequency and on a second frequency.
Claim 2
Dependent Claim
87 words
In a radio communications system, a method for exchanging a message between a plurality of communication devices using a communications resource, the method comprising the steps of: A) transmitting, from a first of the plurality of communication devices a first portion of the message on a first frequency within the communications resource; B) determining the quality of the communications resource; and C) when the quality of the communications resource is unfavorable, transmitting a second portion of the message on the first frequency and on a second frequency.
Claim 3
Dependent Claim
44 words
The method of claim 1, wherein step B) comprises the step of: at the first communication device; B1) calculating a signal quality metric for a signal sent from a second communication device; and B2) transmitting the signal quality metric to the second communication device.
Claim 4
Dependent Claim
42 words
The method of claim 1, further comprising the step of: D) identifying a time when the signal-to-noise ratio (SNR) of the first portion of the message falls below a predetermined threshold as being when the quality of the communications resource is unfavorable.
Claim 5
Dependent Claim
43 words
The method of claim 1, further comprising the step of: D) identifying a time when the bit error rate (BER) for the first portion of the message falls below a predetermined threshold as being when the quality of the communications resource is unfavorable.
Claim 6
Dependent Claim
29 words
The method of claim 1, further comprising the step of: D) transmitting, in response to the step of determining, the second portion of the message on a third frequency.
Claim 7
Dependent Claim
103 words
In a radio communications system, a method for exchanging a message between a plurality of communication devices using a communications resource, the method comprising the steps of: A) transmitting, from a first of the plurality of communication devices, a first portion of the message at a first time on a first frequency within the communications resource; B) determining the quality of the communications resource; and C) when the quality of the communications resource is unfavorable, transmitting a second portion of the message at a time corresponding to the first time on the first frequency and at a second time on the first frequency.
Claim 8
Dependent Claim
103 words
In a radio communications system, a method for exchanging a message between a plurality of communication devices using a communications resource, the method comprising the steps of: A) transmitting, from a first of the plurality of communication devices, a first portion of the message at a first time on a first frequency within the communications resource; B) determining the quality of the communications resource; and C) when the quality of the communications resource is unfavorable, transmitting a second portion of the message at a time corresponding to the first time on the first frequency and at a second time on the first frequency.
Claim 9
Dependent Claim
44 words
The method of claim 6, wherein step B) comprises the step of: at the first communication device; B1) calculating a signal quality metric for a signal sent from a second communication device; and B2) transmitting the signal quality metric to the second communication device.
Claim 10
Dependent Claim
42 words
The method of claim 6, further comprising the step of: D) identifying a time when the signal-to-noise ratio (SNR) of the first portion of the message falls below a predetermined threshold as being when the quality of the communications resource is unfavorable.
Claim 11
Dependent Claim
43 words
The method of claim 6, further comprising the step of: D) identifying a time when the bit error rate (BER) for the first portion of the message falls below a predetermined threshold as being when the quality of the communications resource is unfavorable.
Claim 12
Dependent Claim
33 words
The method of claim 6, further comprising the step of: D) transmitting, in response to the step of determining, the second portion of the message at a third time on the first frequency.
Claim 13
Dependent Claim
50 words
The method of claim 6, wherein the communications resource includes a plurality of time division multiple access (TDMA) frames on the first frequency, and step A) comprises the step of transmitting the second portion of the message in a first timeslot within a first of the plurality of TDMA frames.
Claim 14
Dependent Claim
107 words
In a radio communications system, a method for exchanging a message between a plurality of communication devices using a communications resource, the method comprising the steps of: A) transmitting, from a first of the plurality of communication devices, a first portion of the message at a first time on a first frequency within the communications resource; B) determining the quality of the communications resource; and C) when the quality of the communications resource is unfavorable, transmitting a second portion of the message at a time associated with the first time on the first frequency and at a second time on a second frequency within the communications resource.
Claim 15
Dependent Claim
107 words
In a radio communications system, a method for exchanging a message between a plurality of communication devices using a communications resource, the method comprising the steps of: A) transmitting, from a first of the plurality of communication devices, a first portion of the message at a first time on a first frequency within the communications resource; B) determining the quality of the communications resource; and C) when the quality of the communications resource is unfavorable, transmitting a second portion of the message at a time associated with the first time on the first frequency and at a second time on a second frequency within the communications resource.
Claim 16
Dependent Claim
44 words
The method of claim 12, wherein step B) comprises the step of: at the first communication device; B1) calculating a signal quality metric for a signal sent from a second communication device; and B2) transmitting the signal quality metric to the second communication device.
Claim 17
Dependent Claim
42 words
The method of claim 12, further comprising the step of: D) identifying a time when the signal-to-noise ratio (SNR) of the first portion of the message falls below a predetermined threshold as being when the quality of the communications resource is unfavorable.
Claim 18
Dependent Claim
43 words
The method of claim 12, further comprising the step of: D) identifying a time when the bit error rate (BER) for the first portion of the message falls below a predetermined threshold as being when the quality of the communications resource is unfavorable.
Claim 19
Dependent Claim
103 words
The method of claim 12 wherein the communications resource includes a plurality of time division multiple access (TDMA) frames on the first frequency and a plurality of TDMA frames on the second frequency, and step A) comprises the step of: A1) transmitting the first portion of the message in a first timeslot within a first of the plurality of TDMA frames on the first frequency; and wherein step C) comprises the step of: C1) transmitting the second portion of the message in the first timeslot and in a second timeslot within a second of the plurality of TDMA frames on the second frequency.
Claim 20
Dependent Claim
120 words
A data transmitter for transmitting a message to a communication device using a communications resource, the communications resource including a plurality of time division multiple access (TDMA) frames on a first frequency and a plurality of TDMA frames on a second frequency, the data transmitter comprising: means for transmitting a first portion of the message in a first timeslot within a first of the plurality of TDMA frames on the first frequency; means for determining the quality of the first timeslot; and means, operably coupled to the means for determining, for transmitting a second portion of the message in the first timeslot and in a second timeslot within a second of the plurality of TDMA frames on the second frequency.
Claim 21
Dependent Claim
120 words
A data transmitter for transmitting a message to a communication device using a communications resource, the communications resource including a plurality of time division multiple access (TDMA) frames on a first frequency and a plurality of TDMA frames on a second frequency, the data transmitter comprising: means for transmitting a first portion of the message in a first timeslot within a first of the plurality of TDMA frames on the first frequency; means for determining the quality of the first timeslot; and means, operably coupled to the means for determining, for transmitting a second portion of the message in the first timeslot and in a second timeslot within a second of the plurality of TDMA frames on the second frequency.
References Cited (Backward Citations)
US5129096A
Cited
US5010583A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-09-05 | 1998-03-07 | 1998-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-09-05 | 2002-03-07 | 2002-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-09-05 | 2006-03-07 | 2006-09-06 | $7700.00 | Window Closed / Lapsed |