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Patent US5940452A successfully refreshed from Google Patents.
US5940452A
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Dual mode radio subscriber unit having a diversity receiver apparatus and method therefor
Assignee: Google Technology Holdings LLC
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Filing: 1995-11-29
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Granted: 1999-08-17
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Expires: 2015-11-29
Abstract
Abstract A dual mode cellular radiotelephone subscriber unit (802) comprises a diversity receiver (812) and a controller (814). The diversity receiver (812) receives either a first radio frequency (RF) signal (808) modulated by a digital modulation method (805) or a second RF signal (810) modulated by an analog modulation method (807). In one embodiment, the controller (814) controls the diversity receiver (812) responsive to a first diversity algorithm (834) when the diversity receiver (812) receives the first RF signal (808) modulated by the digital modulation method (805), and responsive to a second diversity algorithm (836) when the diversity receiver (812) receives the second RF signal (810) modulated by the analog modulation method (836). In another embodiment, the controller (814) controls the diversity receiver (812) responsive to a first received information set (835) when the diversity receiver (812) receives the first RF signal (808) modulated by the digital modulation method (805), and responsive to a second received information set (837) when the diversity receiver (812) receives the second RF signal (810) modulated by the analog modulation method (807).
Inventors
- 👤 Randall Wayne Rich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:05
CPC Classifications
H; H04; H04B; H04B7/00; H04B7/02; H04B7/04; H04B7/08; H04B7/0868; H04B7/0874; H04B7/0837; H04B7/0842; H04B7/0848; H04B7/0857
Claims Analysis
Total Claims: 48
Claim 1
Independent Claim
173 words
A radio subscriber unit comprising: a diversity receiver apparatus, including a first antenna in a first receive path and a second antenna in a second receive path, for receiving one of: a first representation and a second representation, respectively, of a first radio frequency (RF) signal modulated by a first modulation method, and a first representation and a second representation, respectively, of a second RF signal modulated by a second modulation method, different from the first modulation method; and a controller for controlling a selection of at least one of the first receive path and the second receive path in the diversity receiver apparatus to produce received information responsive to: a first diversity algorithm when the diversity receiver apparatus receives the first representation and the second representation of the first RF signal modulated by the first modulation method, and a second diversity algorithm, different from the first diversity algorithm, when the diversity receiver apparatus receives the first representation and the second representation of the second RF signal modulated by the second modulation method.
Claim 2
Dependent Claim
173 words
A radio subscriber unit comprising: a diversity receiver apparatus, including a first antenna in a first receive path and a second antenna in a second receive path, for receiving one of: a first representation and a second representation, respectively, of a first radio frequency (RF) signal modulated by a first modulation method, and a first representation and a second representation, respectively, of a second RF signal modulated by a second modulation method, different from the first modulation method; and a controller for controlling a selection of at least one of the first receive path and the second receive path in the diversity receiver apparatus to produce received information responsive to: a first diversity algorithm when the diversity receiver apparatus receives the first representation and the second representation of the first RF signal modulated by the first modulation method, and a second diversity algorithm, different from the first diversity algorithm, when the diversity receiver apparatus receives the first representation and the second representation of the second RF signal modulated by the second modulation method.
Claim 3
Dependent Claim
101 words
A radio subscriber unit according to claim 1: wherein the diversity receiver apparatus produces: a first received information set responsive to receiving the first representation and the second representation of the first RF signal modulated by the first modulation method, and a second received information set, different from the first received information set, responsive to receiving the first representation and the second representation of the second RF signal modulated by the second modulation method; and wherein the first diversity algorithm operates responsive to the first received information set and the second diversity algorithm operates responsive to the second received information set.
Claim 4
Dependent Claim
31 words
A radio subscriber unit according to claim 1: wherein the first modulation method further comprises a digital modulation method; and wherein the second modulation method further comprises an analog modulation method.
Claim 5
Dependent Claim
40 words
A radio subscriber unit according to claim 1: wherein the first modulation method further comprises a first digital modulation method; and wherein the second modulation method further comprises a second digital modulation method different from the first digital modulation method.
Claim 6
Dependent Claim
40 words
A radio subscriber unit according to claim 1: wherein the first modulation method further comprises a first analog modulation method; and wherein the second modulation method further comprises a second analog modulation method different from the first analog modulation method.
Claim 7
Dependent Claim
21 words
A radio subscriber unit according to claim 1 wherein the diversity receiver apparatus further comprises a switched antenna diversity receiver apparatus.
Claim 8
Dependent Claim
20 words
A radio subscriber unit according to claim 1 wherein the diversity receiver apparatus further comprises a selection diversity receiver apparatus.
Claim 9
Dependent Claim
22 words
A radio subscriber unit according to claim 1 wherein the diversity receiver apparatus further comprises a maximal ratio combining diversity receiver apparatus.
Claim 10
Dependent Claim
175 words
A radiotelephone subscriber unit comprising: a switched antenna diversity receiver apparatus, including a first antenna in a first receive path and a second antenna in a second receive path, for receiving one of: a first representation and a second representation, respectively, of a first radio frequency (RF) signal modulated by a digital modulation method, and a first representation and a second representation, respectively, of a second RF signal modulated by an analog modulation method; and a controller for controlling a selection of at least one of the first receive path and the second receive path in the switched antenna diversity receiver apparatus to produce received information responsive to: a first diversity algorithm when the switched antenna diversity receiver apparatus receives the first representation and the second representation of the first RF signal modulated by the digital modulation method, and a second diversity algorithm, different from the first diversity algorithm, when the switched antenna diversity receiver apparatus receives the first representation and the second representation of the second RF signal modulated by the analog modulation method.
Claim 11
Dependent Claim
175 words
A radiotelephone subscriber unit comprising: a switched antenna diversity receiver apparatus, including a first antenna in a first receive path and a second antenna in a second receive path, for receiving one of: a first representation and a second representation, respectively, of a first radio frequency (RF) signal modulated by a digital modulation method, and a first representation and a second representation, respectively, of a second RF signal modulated by an analog modulation method; and a controller for controlling a selection of at least one of the first receive path and the second receive path in the switched antenna diversity receiver apparatus to produce received information responsive to: a first diversity algorithm when the switched antenna diversity receiver apparatus receives the first representation and the second representation of the first RF signal modulated by the digital modulation method, and a second diversity algorithm, different from the first diversity algorithm, when the switched antenna diversity receiver apparatus receives the first representation and the second representation of the second RF signal modulated by the analog modulation method.
Claim 12
Independent Claim
177 words
A method for operating a radio subscriber unit comprising the steps of: receiving, with a diversity receiver apparatus, including a first antenna in a first receive path and a second antenna in a second receive path, one of: a first representation and a second representation, respectively, of a first radio frequency (RF) signal modulated by a first modulation method, and a first representation and a second representation, respectively, of a second RF signal modulated by a second modulation method, different from the first modulation method; and controlling a selection of at least one of the first receive path and the second receive path in the diversity receiver apparatus to produce received information responsive to: a first diversity algorithm when the diversity receiver apparatus receives the first representation and the second representation of the first RF signal modulated by the first modulation method, and a second diversity algorithm, different from the first diversity algorithm, when the diversity receiver apparatus receives the first representation and the second representation of the second RF signal modulated by the second modulation method.
Claim 13
Independent Claim
177 words
A method for operating a radio subscriber unit comprising the steps of: receiving, with a diversity receiver apparatus, including a first antenna in a first receive path and a second antenna in a second receive path, one of: a first representation and a second representation, respectively, of a first radio frequency (RF) signal modulated by a first modulation method, and a first representation and a second representation, respectively, of a second RF signal modulated by a second modulation method, different from the first modulation method; and controlling a selection of at least one of the first receive path and the second receive path in the diversity receiver apparatus to produce received information responsive to: a first diversity algorithm when the diversity receiver apparatus receives the first representation and the second representation of the first RF signal modulated by the first modulation method, and a second diversity algorithm, different from the first diversity algorithm, when the diversity receiver apparatus receives the first representation and the second representation of the second RF signal modulated by the second modulation method.
Claim 14
Dependent Claim
99 words
A method according to claim 10: wherein the diversity receiver apparatus produces: a first received information set responsive to receiving the first representation and the second representation of the first RF signal modulated by the first modulation method, and a second received information set, different from the first received information set, responsive to receiving the first representation and the second representation of the second RF signal modulated by the second modulation method; and wherein the first diversity algorithm operates responsive to the first received information set and the second diversity algorithm operates responsive to the second received information set.
Claim 15
Dependent Claim
29 words
A method according to claim 10: wherein the first modulation method further comprises a digital modulation method; and wherein the second modulation method further comprises an analog modulation method.
Claim 16
Dependent Claim
38 words
A method according to claim 10: wherein the first modulation method further comprises a first digital modulation method; and wherein the second modulation method further comprises a second digital modulation method different from the first digital modulation method.
Claim 17
Dependent Claim
38 words
A method according to claim 10: wherein the first modulation method further comprises a first analog modulation method; and wherein the second modulation method further comprises a second analog modulation method different from the first analog modulation method.
Claim 18
Dependent Claim
19 words
A method according to claim 10 wherein the diversity receiver apparatus further comprises a switched antenna diversity receiver apparatus.
Claim 19
Dependent Claim
18 words
A method according to claim 10 wherein the diversity receiver apparatus further comprises a selection diversity receiver apparatus.
Claim 20
Dependent Claim
20 words
A method according to claim 10 wherein the diversity receiver apparatus further comprises a maximal ratio combining diversity receiver apparatus.
Claim 21
Independent Claim
179 words
A method for operating a radiotelephone subscriber unit comprising the steps of: receiving, with a switched antenna diversity receiver apparatus, including a first antenna in a first receive path and a second antenna in a second receive path, one of: a first representation and a second representation, respectively, of a first radio frequency (RF) signal modulated by a digital modulation method, and a first representation and a second representation, respectively, of a second RF signal modulated by an analog modulation method; and controlling a selection of at least one of the first receive path and the second receive path in the switched antenna diversity receiver apparatus to produce received information responsive to: a first diversity algorithm when the switched antenna diversity receiver apparatus receives the first representation and the second representation of the first RF signal modulated by the digital modulation method, and a second diversity algorithm, different from the first diversity algorithm, when the switched antenna diversity receiver apparatus receives the first representation and the second representation of the second RF signal modulated by the analog modulation method.
Claim 22
Independent Claim
179 words
A method for operating a radiotelephone subscriber unit comprising the steps of: receiving, with a switched antenna diversity receiver apparatus, including a first antenna in a first receive path and a second antenna in a second receive path, one of: a first representation and a second representation, respectively, of a first radio frequency (RF) signal modulated by a digital modulation method, and a first representation and a second representation, respectively, of a second RF signal modulated by an analog modulation method; and controlling a selection of at least one of the first receive path and the second receive path in the switched antenna diversity receiver apparatus to produce received information responsive to: a first diversity algorithm when the switched antenna diversity receiver apparatus receives the first representation and the second representation of the first RF signal modulated by the digital modulation method, and a second diversity algorithm, different from the first diversity algorithm, when the switched antenna diversity receiver apparatus receives the first representation and the second representation of the second RF signal modulated by the analog modulation method.
Claim 23
Dependent Claim
203 words
A radio subscriber unit comprising: a diversity receiver apparatus, including a first antenna in a first receive path and a second antenna in a second receive path, for producing: a first received information set responsive to receiving a first representation and a second representation, respectively, of a first radio frequency (RF) signal modulated by a first modulation method, and a second received information set, different from the first received information set, responsive to receiving a first representation and a second representation, respectively, of a second RF signal modulated by a second modulation method, different from the first modulation method; and a controller for controlling a selection of at least one of the first receive path and the second receive path in the diversity receiver apparatus to produce received information responsive to one of the first received information set and the second received information set; wherein the controller controls the selection of the at least one of the first receive path and the second receive path in the diversity receiver apparatus responsive to: a first diversity algorithm operating responsive to the first received information set, and a second diversity algorithm, different from the first diversity algorithm, operating responsive to the second received information set.
Claim 24
Dependent Claim
203 words
A radio subscriber unit comprising: a diversity receiver apparatus, including a first antenna in a first receive path and a second antenna in a second receive path, for producing: a first received information set responsive to receiving a first representation and a second representation, respectively, of a first radio frequency (RF) signal modulated by a first modulation method, and a second received information set, different from the first received information set, responsive to receiving a first representation and a second representation, respectively, of a second RF signal modulated by a second modulation method, different from the first modulation method; and a controller for controlling a selection of at least one of the first receive path and the second receive path in the diversity receiver apparatus to produce received information responsive to one of the first received information set and the second received information set; wherein the controller controls the selection of the at least one of the first receive path and the second receive path in the diversity receiver apparatus responsive to: a first diversity algorithm operating responsive to the first received information set, and a second diversity algorithm, different from the first diversity algorithm, operating responsive to the second received information set.
Claim 25
Independent Claim
203 words
A method for operating a radio subscriber unit comprising the steps of: producing with a diversity receiver apparatus including a first antenna in a first receive path and a second antenna in a second receive path: a first received information set responsive to receiving a first representation and a second representation, respectively, of a first radio frequency (RF) signal modulated by a first modulation method, and a second received information set, different from the first received information set, responsive to receiving a first representation and a second representation, respectively, of a second RF signal modulated by a second modulation method; and controlling a selection of at least one of the first receive path and the second receive path in the diversity receiver apparatus to produce received information responsive to one of the first received information set and the second received information set; wherein the step of controlling controls the selection of the at least one of the first receive path and the second receive path in the diversity receiver apparatus responsive to: a first diversity algorithm operating responsive to the first received information set, and a second diversity algorithm, different from the first diversity algorithm, operating responsive to the second received information set.
Claim 26
Independent Claim
203 words
A method for operating a radio subscriber unit comprising the steps of: producing with a diversity receiver apparatus including a first antenna in a first receive path and a second antenna in a second receive path: a first received information set responsive to receiving a first representation and a second representation, respectively, of a first radio frequency (RF) signal modulated by a first modulation method, and a second received information set, different from the first received information set, responsive to receiving a first representation and a second representation, respectively, of a second RF signal modulated by a second modulation method; and controlling a selection of at least one of the first receive path and the second receive path in the diversity receiver apparatus to produce received information responsive to one of the first received information set and the second received information set; wherein the step of controlling controls the selection of the at least one of the first receive path and the second receive path in the diversity receiver apparatus responsive to: a first diversity algorithm operating responsive to the first received information set, and a second diversity algorithm, different from the first diversity algorithm, operating responsive to the second received information set.
Claim 27
Dependent Claim
156 words
A radio subscriber unit comprising: a diversity receiver apparatus, including a first antenna in a first receive path and a second antenna in a second receive path, for producing: a first received information set responsive to receiving a first representation and a second representation, respectively, of a first radio frequency (RF) signal modulated by a first modulation method, and a second received information set, different from the first received information set, responsive to receiving a first representation and a second representation, respectively, of a second RF signal modulated by a second modulation method; and a controller for controlling a selection of at least one of the first receive path and the second receive path in the diversity receiver apparatus to produce received information responsive to: a first diversity algorithm operating responsive to the first received information set, and a second diversity algorithm, different from the first diversity algorithm, operating responsive to the second received information set.
Claim 28
Dependent Claim
156 words
A radio subscriber unit comprising: a diversity receiver apparatus, including a first antenna in a first receive path and a second antenna in a second receive path, for producing: a first received information set responsive to receiving a first representation and a second representation, respectively, of a first radio frequency (RF) signal modulated by a first modulation method, and a second received information set, different from the first received information set, responsive to receiving a first representation and a second representation, respectively, of a second RF signal modulated by a second modulation method; and a controller for controlling a selection of at least one of the first receive path and the second receive path in the diversity receiver apparatus to produce received information responsive to: a first diversity algorithm operating responsive to the first received information set, and a second diversity algorithm, different from the first diversity algorithm, operating responsive to the second received information set.
Claim 29
Dependent Claim
31 words
A radio subscriber unit according to claim 21: wherein the first modulation method further comprises a digital modulation method; and wherein the second modulation method further comprises an analog modulation method.
Claim 30
Dependent Claim
40 words
A radio subscriber unit according to claim 21: wherein the first modulation method further comprises a first digital modulation method; and wherein the second modulation method further comprises a second digital modulation method different from the first digital modulation method.
Claim 31
Dependent Claim
40 words
A radio subscriber unit according to claim 21: wherein the first modulation method further comprises a first analog modulation method; and wherein the second modulation method further comprises a second analog modulation method different from the first analog modulation method.
Claim 32
Dependent Claim
21 words
A radio subscriber unit according to claim 21 wherein the diversity receiver apparatus further comprises a switched antenna diversity receiver apparatus.
Claim 33
Dependent Claim
20 words
A radio subscriber unit according to claim 21 wherein the diversity receiver apparatus further comprises a selection diversity receiver apparatus.
Claim 34
Dependent Claim
22 words
A radio subscriber unit according to claim 21 wherein the diversity receiver apparatus further comprises a maximal ratio combining diversity receiver apparatus.
Claim 35
Independent Claim
166 words
A method for operating a radio subscriber unit comprising the steps of: producing with a diversity receiver apparatus, including a first antenna in a first receive path and a second antenna in a second receive path: a first received information set responsive to receiving a first representation and a second representation, respectively, of a first radio frequency (RF) signal modulated by a first modulation method, and a second received information set, different from the first received information set, responsive to receiving a first representation and a second representation, respectively, of a second RF signal modulated by a second modulation method, different from the first modulation method; and controlling a selection of at least one of the first receive path and the second receive path in the diversity receiver apparatus to produce received information responsive to: a first diversity algorithm operating responsive to the first received information set, and a second diversity algorithm, different from the first diversity algorithm, operating responsive to the second received information set.
Claim 36
Independent Claim
166 words
A method for operating a radio subscriber unit comprising the steps of: producing with a diversity receiver apparatus, including a first antenna in a first receive path and a second antenna in a second receive path: a first received information set responsive to receiving a first representation and a second representation, respectively, of a first radio frequency (RF) signal modulated by a first modulation method, and a second received information set, different from the first received information set, responsive to receiving a first representation and a second representation, respectively, of a second RF signal modulated by a second modulation method, different from the first modulation method; and controlling a selection of at least one of the first receive path and the second receive path in the diversity receiver apparatus to produce received information responsive to: a first diversity algorithm operating responsive to the first received information set, and a second diversity algorithm, different from the first diversity algorithm, operating responsive to the second received information set.
Claim 37
Dependent Claim
29 words
A method according to claim 28: wherein the first modulation method further comprises a digital modulation method; and wherein the second modulation method further comprises an analog modulation method.
Claim 38
Dependent Claim
38 words
A method according to claim 28: wherein the first modulation method further comprises a first digital modulation method; and wherein the second modulation method further comprises a second digital modulation method different from the first digital modulation method.
Claim 39
Dependent Claim
38 words
A method according to claim 28: wherein the first modulation method further comprises a first analog modulation method; and wherein the second modulation method further comprises a second analog modulation method different from the first analog modulation method.
Claim 40
Dependent Claim
19 words
A method according to claim 28 wherein the diversity receiver apparatus further comprises a switched antenna diversity receiver apparatus.
Claim 41
Dependent Claim
18 words
A method according to claim 28 wherein the diversity receiver apparatus further comprises a selection diversity receiver apparatus.
Claim 42
Dependent Claim
20 words
A method according to claim 28 wherein the diversity receiver apparatus further comprises a maximal ratio combining diversity receiver apparatus.
Claim 43
Dependent Claim
160 words
A radiotelephone subscriber unit comprising: a switched antenna diversity receiver apparatus, including a first antenna in a first receive path and a second antenna in a second receive path, for producing: a first representation and a second representation, respectively, of a first received information set responsive to receiving a first radio frequency (RF) signal modulated by a digital modulation method, and a first representation and a second representation, respectively, of a second received information set, different from the first received information set, responsive to receiving a second RF signal modulated by an analog modulation method; and a controller for controlling a selection of at least one of the first receive path and the second receive path in the switched antenna diversity receiver apparatus to produce received information responsive to: a first diversity algorithm operating responsive to the first received information set, and a second diversity algorithm, different from the first diversity algorithm, operating responsive to the second received information set.
Claim 44
Dependent Claim
160 words
A radiotelephone subscriber unit comprising: a switched antenna diversity receiver apparatus, including a first antenna in a first receive path and a second antenna in a second receive path, for producing: a first representation and a second representation, respectively, of a first received information set responsive to receiving a first radio frequency (RF) signal modulated by a digital modulation method, and a first representation and a second representation, respectively, of a second received information set, different from the first received information set, responsive to receiving a second RF signal modulated by an analog modulation method; and a controller for controlling a selection of at least one of the first receive path and the second receive path in the switched antenna diversity receiver apparatus to produce received information responsive to: a first diversity algorithm operating responsive to the first received information set, and a second diversity algorithm, different from the first diversity algorithm, operating responsive to the second received information set.
Claim 45
Dependent Claim
234 words
A radiotelephone subscriber unit according to claim 35: wherein the radiotelephone subscriber unit is a dual mode cellular radiotelephone subscriber unit adapted to receive one of a first composite radio frequency (RF) signal (Io) and a second composite RF signal, wherein the first composite RF signal includes a first desired RF signal and interfering signals, wherein the desired RF signal is a direct sequence spread spectrum (DSSS) signal, wherein the DSSS signal includes at least one coded pilot signal (Ec), and wherein the second composite RF signal includes a second desired RF signal and interfering signals, and wherein the switched antenna diversity receiver apparatus produces: the first received information set responsive to receiving the first composite RF signal including the first desired RF signal modulated by a code division multiple access (CDMA) modulation method, wherein the first received information set comprises a ratio (Ec/Io) of the at least one coded pilot signal (Ec) to the first composite RF signal (Io) and an integration of an estimate of a received signal strength indication of the first composite RF signal (∫RSSI), and the second received information set, different from the first received information set, responsive to receiving the second composite RF signal including the second desired RF signal modulated by an analog modulation method, wherein the second received information set comprises an estimate of a received signal strength indication of the second composite RF signal (RSSI).
Claim 46
Independent Claim
164 words
A method for operating a radiotelephone subscriber unit comprising the steps of: producing with a switched antenna diversity receiver apparatus, including a first antenna in a first receive path and a second antenna in a second receive path: a first received information set responsive to receiving a first representation and a second representation, respectively, of a first radio frequency (RF) signal modulated by a digital modulation method, and a second received information set, different from the first received information set, responsive to receiving a first representation and a second representation, respectively, of a second RF signal modulated by an analog modulation method; and controlling a selection of at least one of the first receive path and the second receive path in the switched antenna diversity receiver apparatus to produce received information responsive to: a first diversity algorithm operating responsive to the first received information set, and a second diversity algorithm, different from the first diversity algorithm, operating responsive to the second received information set.
Claim 47
Independent Claim
164 words
A method for operating a radiotelephone subscriber unit comprising the steps of: producing with a switched antenna diversity receiver apparatus, including a first antenna in a first receive path and a second antenna in a second receive path: a first received information set responsive to receiving a first representation and a second representation, respectively, of a first radio frequency (RF) signal modulated by a digital modulation method, and a second received information set, different from the first received information set, responsive to receiving a first representation and a second representation, respectively, of a second RF signal modulated by an analog modulation method; and controlling a selection of at least one of the first receive path and the second receive path in the switched antenna diversity receiver apparatus to produce received information responsive to: a first diversity algorithm operating responsive to the first received information set, and a second diversity algorithm, different from the first diversity algorithm, operating responsive to the second received information set.
Claim 48
Dependent Claim
243 words
A method for operating a radiotelephone subscriber unit according to claim 37: wherein the radiotelephone subscriber unit is a dual mode cellular radiotelephone subscriber unit adapted to receive one of a first composite radio frequency (RF) signal (Io) and a second composite RF signal, wherein the first composite RF signal includes a first desired RF signal and interfering signals, wherein the desired RF signal is a direct sequence spread spectrum (DSSS) signal, wherein the DSSS signal includes at least one coded pilot signal (Ec), and wherein the second composite RF signal includes a second desired RF signal and interfering signals, and wherein the step of producing produces with the switched antenna diversity receiver apparatus: the first received information set responsive to receiving the first composite RF signal including the first desired RF signal modulated by a code division multiple access (CDMA) modulation method, wherein the first received information set comprises a ratio (Ec/Io) of the at least one coded pilot signal (Ec) to the first composite RF signal (Io) and an integration of an estimate of a received signal strength indication of the first composite RF signal (∫RSSI), and the second received information set, different from the first received information set, responsive to receiving the second composite RF signal including the second desired RF signal modulated by an analog modulation method, wherein the second received information set comprises an estimate of a received signal strength indication of the second composite RF signal (RSSI).
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