Patent US2277692A successfully refreshed from Google Patents.
Patent US5313489A successfully refreshed from Google Patents.
US5313489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal processing in communication systems
Assignee: Google Technology Holdings LLC
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Filing: 1993-06-25
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Granted: 1994-05-17
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Expires: 2013-06-25
Abstract
Abstract An AMPS system facilitates reception and processing of a DS CDMA signal transmitted by a mobile station (125). The AMPS system provides an alternate path for the signal to be received by a DS CDMA receiver (506) system. The DS CDMA receiver system generates a signal compatible with the AMPS system, adjusts the generated signal to be proportional to the DS CDMA signal, and inputs the adjusted signal (510) into the AMPS system. The AMPS system then processes the adjusted signal for purposes of handoff of the mobile station (125) from the DS CDMA system to the AMPS system.
Inventors
- 👤 Barry J. Menich
- 👤 Michael D. Kotzin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:14
CPC Classifications
H; H04; H04W; H04W36/00; H04W36/14; H04B; H04B7/00; H04B7/14; H04B7/15; H04B7/204; H04W36/0005; H04W36/0055; H04W36/0066
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
89 words
A method of signal processing comprising the steps of: detecting, in a first communication system, a level of a signal transmitted by a mobile station; generating a signal compatible with a second communication system; adjusting the level of the generated signal compatible with a second communication system to be substantially proportional to the detected level of the signal transmitted by the mobile station in the first communication system; and inputting the adjusted generated signal into the second communication system for processing related to functions of the second communication system.
Claim 2
Independent Claim
89 words
A method of signal processing comprising the steps of: detecting, in a first communication system, a level of a signal transmitted by a mobile station; generating a signal compatible with a second communication system; adjusting the level of the generated signal compatible with a second communication system to be substantially proportional to the detected level of the signal transmitted by the mobile station in the first communication system; and inputting the adjusted generated signal into the second communication system for processing related to functions of the second communication system.
Claim 3
Dependent Claim
20 words
The method of claim 1 wherein the first communication system further comprises a code division multiple access (CDMA) communication system.
Claim 4
Dependent Claim
17 words
The method of claim 1 wherein the second communication system further comprises an analog cellular radiotelephone system.
Claim 5
Dependent Claim
53 words
The method of claim 1 wherein the step of inputting the adjusted signal into the second communication system for processing related to functions of the second communication system further comprises the step of inputting the adjusted signal into the second communication system for processing related to handoff functions of the second communication system.
Claim 6
Independent Claim
105 words
A method of facilitating handoff between unlike communication systems, the method comprising the steps of: detecting, in a receiver of a first communication system, a level of a signal transmitted by a mobile station communicating within the first communication system; generating a transmission signal compatible with a second communication system; adjusting the level of the transmission signal compatible with a second communication system to be substantially proportional to the detected level of the signal transmitted by the mobile station communicating with the first communication system; and inputting the adjusted generated signal into a receiver of the second communication system for processing related to handoff functions.
Claim 7
Independent Claim
105 words
A method of facilitating handoff between unlike communication systems, the method comprising the steps of: detecting, in a receiver of a first communication system, a level of a signal transmitted by a mobile station communicating within the first communication system; generating a transmission signal compatible with a second communication system; adjusting the level of the transmission signal compatible with a second communication system to be substantially proportional to the detected level of the signal transmitted by the mobile station communicating with the first communication system; and inputting the adjusted generated signal into a receiver of the second communication system for processing related to handoff functions.
Claim 8
Dependent Claim
20 words
The method of claim 5 wherein the first communication system further comprises a code division multiple access (CDMA) communication system.
Claim 9
Dependent Claim
17 words
The method of claim 5 wherein the second communication system further comprises an analog cellular radiotelephone system.
Claim 10
Independent Claim
96 words
An apparatus for facilitating handoff between unlike communication systems, the apparatus comprising: means for detecting a level a signal transmitted by a mobile station within a first communication system; means for generating a signal compatible with a second communication system; means for adjusting the generated signal compatible with the second system to be substantially proportional to the detected level of the signal transmitted by a mobile station with the first communication system; and means for transmitting the adjusted generated signal compatible with the second system to the second communication system for processing related to handoff functions.
Claim 11
Independent Claim
96 words
An apparatus for facilitating handoff between unlike communication systems, the apparatus comprising: means for detecting a level a signal transmitted by a mobile station within a first communication system; means for generating a signal compatible with a second communication system; means for adjusting the generated signal compatible with the second system to be substantially proportional to the detected level of the signal transmitted by a mobile station with the first communication system; and means for transmitting the adjusted generated signal compatible with the second system to the second communication system for processing related to handoff functions.
Claim 12
Dependent Claim
20 words
The apparatus of claim 8 wherein said first communication system further comprises a code division multiple access (CDMA) communication system.
Claim 13
Dependent Claim
17 words
The apparatus of claim 9 wherein said means for detecting further comprises a CDMA communication system receiver.
Claim 14
Dependent Claim
17 words
The apparatus of claim 8 wherein said second communication system further comprises an analog cellular radiotelephone system.
Claim 15
Dependent Claim
36 words
The apparatus of claim 11 wherein said means for generating a signal compatible with a second communication system further comprises means for generating a frequency modulated (FM) signal having a supervisory audio tone (SAT) modulated thereon.
Claim 16
Independent Claim
103 words
An apparatus for enabling measurement of a mobile station communicating in a code division multiple access (CDMA) communication system at a target analog radiotelephone system, said apparatus comprising: a CDMA receiver for detecting the signal strength of a signal transmitted by the mobile station; means for generating a signal compatible with the analog radiotelephone system; means for adjusting a signal strength of the generated signal compatible with the analog radiotelephone system to be substantially proportional to the signal strength of the signal transmitted by the mobile station; and means for inputting said adjusted generated signal into a receiver of the analog radiotelephone system.
Claim 17
Independent Claim
103 words
An apparatus for enabling measurement of a mobile station communicating in a code division multiple access (CDMA) communication system at a target analog radiotelephone system, said apparatus comprising: a CDMA receiver for detecting the signal strength of a signal transmitted by the mobile station; means for generating a signal compatible with the analog radiotelephone system; means for adjusting a signal strength of the generated signal compatible with the analog radiotelephone system to be substantially proportional to the signal strength of the signal transmitted by the mobile station; and means for inputting said adjusted generated signal into a receiver of the analog radiotelephone system.
Claim 18
Dependent Claim
36 words
The apparatus of claim 13 wherein said means for generating a signal compatible with a second communication system further comprises means for generating a frequency modulated (FM) signal having a supervisory audio tone (SAT) modulated thereon.
Claim 19
Dependent Claim
20 words
The method of claim 1 wherein the first communication system further comprises a time division multiple access (TDMA) communication system.
Claim 20
Dependent Claim
20 words
The method of claim 5 wherein the first communication system further comprises a time division multiple access (TDMA) communication system.
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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) | 1997-05-16 | 1997-11-15 | 1998-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-05-16 | 2001-11-15 | 2002-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-05-16 | 2005-11-15 | 2006-05-17 | $7700.00 | Window Closed / Lapsed |