US5890055A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and system for connecting cells and microcells in a wireless communications network
Assignee: Nokia of America Corp
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Filing: 1995-07-28
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Granted: 1999-03-30
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Expires: 2015-07-28
Abstract
Abstract A wireless communications system includes a number of clusters of repeaters wherein all repeaters within a cluster arc connected to a common hub via respective millimeter-wave radio links. Wireless signals received by the repeaters from end-user devices are transparently carried by the millimeter-wave radio links to respective hubs that act as concentrators for the repeaters. The hubs may be linked to a wireless network base station (in an outdoor setting) or alternatively to a server or a PBX (in an indoor environment) via a high-speed transmission facility, such as a fiber optic cable that is thus shared by all the repeaters.
Inventors
- 👤 Ta-Shing Chu
- 👤 Martin V. Clark
- 👤 Peter Frank Driessen
- 👤 Vinko Erceg
- 👤 Lawrence Joel Greenstein
- 👤 Robert Stephen Roman
- 👤 Anthony Joseph Rustako, Jr.
- 👤 Giovanni Vannucci
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:36
CPC Classifications
H; H04; H04W; H04W88/00; H04W88/08; H04W88/085; H04B; H04B7/00; H04B7/24; H04B7/26; H04B7/2603; H04B7/2606; H04W16/00; H04W16/24; H04W16/26
Claims Analysis
Total Claims: 40
Claim 1
Independent Claim
174 words
A transmission system for use in a wireless communications network, said system comprising at least one cluster of repeaters wherein each one of said repeaters receives a) wireless signals from wireless end-user devices via respective wireless links to produce communications signals destined for a networking device of said communications network; and b) information signals from said networking device to deliver wireless signals to at least one of said wireless end-user devices; and at least one hub wherein each hub communicates with a) said networking device via a transmission link, and b) repeaters that are associated with a single cluster, and that are within line-of-sight of each hub, said communication with said associated repeaters being carried out via respective radio links which provide respective communications paths for said communications signals and said information signals to be exchanged between said associated repeaters, said each hub and said networking device, said hub further including a polarization duplexer which uses orthogonal polarization to associate each received communications signal to a particular repeater which transmitted thereto said communication signal.
Claim 2
Dependent Claim
174 words
A transmission system for use in a wireless communications network, said system comprising at least one cluster of repeaters wherein each one of said repeaters receives a) wireless signals from wireless end-user devices via respective wireless links to produce communications signals destined for a networking device of said communications network; and b) information signals from said networking device to deliver wireless signals to at least one of said wireless end-user devices; and at least one hub wherein each hub communicates with a) said networking device via a transmission link, and b) repeaters that are associated with a single cluster, and that are within line-of-sight of each hub, said communication with said associated repeaters being carried out via respective radio links which provide respective communications paths for said communications signals and said information signals to be exchanged between said associated repeaters, said each hub and said networking device, said hub further including a polarization duplexer which uses orthogonal polarization to associate each received communications signal to a particular repeater which transmitted thereto said communication signal.
Claim 3
Dependent Claim
25 words
The invention of claim 1 wherein said at least one hub is also a repeater which communicates with wireless end-user devices within said hub's vicinity.
Claim 4
Dependent Claim
23 words
The invention of claim 1 wherein one of said repeaters within the cluster is not within line-of-sight of other repeaters within the cluster.
Claim 5
Dependent Claim
13 words
The invention of claim 1 wherein said radio link is a millimeter-wave link.
Claim 6
Dependent Claim
49 words
The invention of claim 1 wherein said repeater further includes a first antenna for communications with said at least one wireless end-user device; and a second antenna for communications with said hub, said second antenna being placed within line of sight of a corresponding antenna connected to said hub.
Claim 7
Dependent Claim
53 words
The invention of claim 1 wherein said hub further includes at least one duplexer a) which separates information signals transmitted to a particular one of said associated repeaters from communications signals received from said particular one of said associated repeaters, and b) separates information signals transmitted to different ones of said associated repeaters.
Claim 8
Dependent Claim
52 words
The invention of claim 1 wherein at least one of said repeaters receives a plurality of said wireless signals from a plurality of wireless end-user devices operative at different air interfaces and wherein said at least one repeater receives said plurality of wireless signals as a block of spectrum in aggregate form.
Claim 9
Dependent Claim
32 words
The invention of claim 1 wherein said networking device is selected from a group of devices which include a) a base station b) a processor and c) a wireless private branch exchange.
Claim 10
Dependent Claim
76 words
The invention of claim 1 wherein said at least one hub further includes a first processor which receives said information signals from said networking device and converts said information signals into a format suitable for transmission over said respective radio link; and a second processor which a) receives said communications signals via said respective radio link and b) modulates said communications signals for transmission to a transceiver which terminates a facility connected to said networking device.
Claim 11
Dependent Claim
17 words
The invention of claim 1 wherein said at least one hub is co-located with said networking device.
Claim 12
Dependent Claim
81 words
The invention of claim 1 wherein at least one of said repeaters includes a first signal processor which processes said wireless signals received from said wireless end-user devices to produce said communications signals destined for said networking device; and a second signal processor which processes information signals received from i) said networking device via a hub associated with said repeater, and ii) said respective radio link in order to output said wireless signals to said at least one wireless end-user device.
Claim 13
Dependent Claim
51 words
The invention of claim 11 wherein said first signal processor further includes a frequency converter which converts said received wireless signals into intermediate frequency signals; and a modulator which frequency-modulates said intermediate frequency signals onto a carrier to generate said communications signals transmitted to said hub via said respective radio link.
Claim 14
Dependent Claim
66 words
The invention of claim 11 wherein said second signal processor further includes a frequency converter which converts said information signals received from said hub into respective intermediate frequency signals of lower frequency; and a frequency-modulated signal detector which recovers from said respective intermediate frequency signals a baseband signal that is further processed to generate said wireless signals transmitted to said at least one wireless end-user device.
Claim 15
Dependent Claim
162 words
A wireless communications network comprising at least one repeater which a) receives at least one wireless signal from at least one nearby wireless end-user device, b) converts said at least one received wireless signal to an intermediate frequency signal, and c) frequency-modulates said intermediate frequency signal onto a carrier for transmission over a radio link operative at a selected frequency range; and at least one hub which a) receives via said radio link said frequency-modulated signal from said at least one repeater that is placed within line-of-sight of said at least one hub, and b) demodulates said frequency-modulated signal to produce a demodulated near baseband signal that is subsequently up converted to a selected carrier frequency for communication to a transceiver which terminates a transmission link connected to a communications device of said wireless communications network, said hub including a polarization duplexer that uses orthogonal polarizations to associate each received communications signal to a particular repeater which transmitted thereto said communications signal.
Claim 16
Dependent Claim
162 words
A wireless communications network comprising at least one repeater which a) receives at least one wireless signal from at least one nearby wireless end-user device, b) converts said at least one received wireless signal to an intermediate frequency signal, and c) frequency-modulates said intermediate frequency signal onto a carrier for transmission over a radio link operative at a selected frequency range; and at least one hub which a) receives via said radio link said frequency-modulated signal from said at least one repeater that is placed within line-of-sight of said at least one hub, and b) demodulates said frequency-modulated signal to produce a demodulated near baseband signal that is subsequently up converted to a selected carrier frequency for communication to a transceiver which terminates a transmission link connected to a communications device of said wireless communications network, said hub including a polarization duplexer that uses orthogonal polarizations to associate each received communications signal to a particular repeater which transmitted thereto said communications signal.
Claim 17
Dependent Claim
33 words
The invention of claim 14 wherein said wireless communications network includes more than one of said hubs wherein each one of said hubs communicates via respective radio links to more than one repeater.
Claim 18
Dependent Claim
32 words
The invention of claim 15 wherein said at least one repeater receives more than one wireless signal from more than one wireless end-user device, in aggregate form as a block of spectrum.
Claim 19
Dependent Claim
166 words
A transmission system for wireless communications network comprising a plurality of hubs wherein each one of said hubs a) receives communications signal from an associated networking device and b) converts said communications signal to a near baseband signal that is subsequently frequency-modulated for transmission over a radio link operative at a selected frequency range, each of said hubs including a polarization duplexer that uses orthogonal polarizations to associate each received communications signal to a particular repeater which transmitted thereto said communications signal; and a plurality of repeaters grouped into clusters wherein repeaters within a cluster are located with line-of-sight of an associated one of said hubs and wherein said repeaters within a cluster a) receive said frequency-modulated signal from said associated hub via said radio link and b) demodulate said respective frequency-modulated signal to produce a demodulated signal that is subsequently frequency-translated to at least one wireless carrier frequency for transmission to at least one nearby wireless end-user device operative at one or more air interfaces.
Claim 20
Dependent Claim
166 words
A transmission system for wireless communications network comprising a plurality of hubs wherein each one of said hubs a) receives communications signal from an associated networking device and b) converts said communications signal to a near baseband signal that is subsequently frequency-modulated for transmission over a radio link operative at a selected frequency range, each of said hubs including a polarization duplexer that uses orthogonal polarizations to associate each received communications signal to a particular repeater which transmitted thereto said communications signal; and a plurality of repeaters grouped into clusters wherein repeaters within a cluster are located with line-of-sight of an associated one of said hubs and wherein said repeaters within a cluster a) receive said frequency-modulated signal from said associated hub via said radio link and b) demodulate said respective frequency-modulated signal to produce a demodulated signal that is subsequently frequency-translated to at least one wireless carrier frequency for transmission to at least one nearby wireless end-user device operative at one or more air interfaces.
Claim 21
Dependent Claim
13 words
The invention of claim 17 wherein said radio link is a millimeter-wave link.
Claim 22
Independent Claim
218 words
A method of communicating wireless information in a wireless communications network, said method comprising the steps of: receiving in at least one repeater a wireless signal from a wireless end-user device at a first frequency range, and a communications signal at a second frequency range; processing in said at least one repeater a) said wireless signals to produce frequency-modulated signals that are transmitted over a radio link operative at said second frequency range, and b) said communications signals to produce said wireless signal that is transmitted to said wireless end-user devices at said first frequency range; receiving in a hub located within line-of-sight of said at least one repeater a) a data signal from a networking device of said wireless communications network, and b) said frequency-modulated signal from said at least one repeater, said hub including a polarization duplexer that uses orthogonal polarizations to associate such received communications signal to a particular repeater that transmitted thereto said communications signal; processing at said hub a) said data signal to generate said commnications signal that is transmitted to said at least one repeater via said radio link, and b) said frequency-modulated signal that is demodulated to be subsequently modulated at a selected carrier frequency for communication to a transceiver which terminates a wired transmission link connected to said communications device.
Claim 23
Independent Claim
218 words
A method of communicating wireless information in a wireless communications network, said method comprising the steps of: receiving in at least one repeater a wireless signal from a wireless end-user device at a first frequency range, and a communications signal at a second frequency range; processing in said at least one repeater a) said wireless signals to produce frequency-modulated signals that are transmitted over a radio link operative at said second frequency range, and b) said communications signals to produce said wireless signal that is transmitted to said wireless end-user devices at said first frequency range; receiving in a hub located within line-of-sight of said at least one repeater a) a data signal from a networking device of said wireless communications network, and b) said frequency-modulated signal from said at least one repeater, said hub including a polarization duplexer that uses orthogonal polarizations to associate such received communications signal to a particular repeater that transmitted thereto said communications signal; processing at said hub a) said data signal to generate said commnications signal that is transmitted to said at least one repeater via said radio link, and b) said frequency-modulated signal that is demodulated to be subsequently modulated at a selected carrier frequency for communication to a transceiver which terminates a wired transmission link connected to said communications device.
Claim 24
Dependent Claim
14 words
The method of claim 19 wherein said radio link is a millimeter wave link.
Claim 25
Dependent Claim
32 words
The method of claim 19 wherein said networking device is selected from a group of devices which include a) a base station b) a processor, and c) a wireless private branch exchange.
Claim 26
Dependent Claim
21 words
The method of claim 19 wherein said hub is also a repeater which receives wireless signals from nearby wireless end-user devices.
Claim 27
Independent Claim
215 words
A system for communicating wireless information in a wireless communications network, said method comprising the steps of: at least one repeater which a) receives a wireless signal from a wireless end-user device at a first frequency range, and a communications signal at a second frequency range, and b) processes i) said wireless signal to produce a frequency-modulated signal that is transmitted over a radio link operative at said second frequency range, and ii) said communications signal to produce said wireless signal that is transmitted to said wireless end-user device at said first frequency range; a hub that is located within line-of-sight of said at least one repeater and a) receives a data signal from a networking device of said wireless communications network, and said frequency-modulated signal from said at least one repeater b) processes i) said data signal to generate said communications signals that are transmitted to said at least one repeater via said radio link, and ii) said frequency-modulated signal that is demodulated to be subsequently modulated at a selected carrier frequency for communication to a transceiver which terminates a wired transmission link connected to said communications device, said hub including a polarization duplexer that uses orthogonal polarizations to associate each received communications signal to a particular repeater that transmitted hereto said communications signal.
Claim 28
Independent Claim
215 words
A system for communicating wireless information in a wireless communications network, said method comprising the steps of: at least one repeater which a) receives a wireless signal from a wireless end-user device at a first frequency range, and a communications signal at a second frequency range, and b) processes i) said wireless signal to produce a frequency-modulated signal that is transmitted over a radio link operative at said second frequency range, and ii) said communications signal to produce said wireless signal that is transmitted to said wireless end-user device at said first frequency range; a hub that is located within line-of-sight of said at least one repeater and a) receives a data signal from a networking device of said wireless communications network, and said frequency-modulated signal from said at least one repeater b) processes i) said data signal to generate said communications signals that are transmitted to said at least one repeater via said radio link, and ii) said frequency-modulated signal that is demodulated to be subsequently modulated at a selected carrier frequency for communication to a transceiver which terminates a wired transmission link connected to said communications device, said hub including a polarization duplexer that uses orthogonal polarizations to associate each received communications signal to a particular repeater that transmitted hereto said communications signal.
Claim 29
Dependent Claim
14 words
The invention of claim 23 wherein said radio link is a millimeter wave link.
Claim 30
Dependent Claim
32 words
The invention of claim 23 wherein said networking device is selected from a group of devices which include a) a base station b) a processor, and c) a wireless private branch exchange.
Claim 31
Dependent Claim
23 words
The invention of claim 23 wherein said hub is also a repeater which receives a wireless signal from a nearby wireless end-user device.
Claim 32
Dependent Claim
159 words
A wireless communications network comprising at least one cluster of repeaters wherein each one of said repeaters within said cluster simulcasts a respective individual version of a common wireless information signal received from a wireless end-user device, and destined for a networking device; a hub which a) receives at first frequency range said common wireless signal from said wireless end-user device, and at a second frequency range each said individual version of said common wireless signal from each one of said repeaters via respective radio links b) adds said common wireless signal received therein to a total of each said received individual version received from each one of said repeaters to generate a composite signal which is transmitted to said networking device, and c) transmits to each one of said repeaters a common wireless communications signal that is received from said networking device in order to allow each repeater to act as a different port of a distributed antenna.
Claim 33
Dependent Claim
159 words
A wireless communications network comprising at least one cluster of repeaters wherein each one of said repeaters within said cluster simulcasts a respective individual version of a common wireless information signal received from a wireless end-user device, and destined for a networking device; a hub which a) receives at first frequency range said common wireless signal from said wireless end-user device, and at a second frequency range each said individual version of said common wireless signal from each one of said repeaters via respective radio links b) adds said common wireless signal received therein to a total of each said received individual version received from each one of said repeaters to generate a composite signal which is transmitted to said networking device, and c) transmits to each one of said repeaters a common wireless communications signal that is received from said networking device in order to allow each repeater to act as a different port of a distributed antenna.
Claim 34
Dependent Claim
33 words
The invention of claim 27 wherein each one of said repeaters is placed at a given distance of said hub in order to increase the range of coverage of said wireless communications network.
Claim 35
Dependent Claim
32 words
The invention of claim 27 wherein said networking device is selected from a group of devices which include a) a base station b) a processor and c) a wireless private branch exchange.
Claim 36
Dependent Claim
31 words
The invention of claim 27 wherein said addition of said common wireless signal to said total of each individual version of said common wireless signal is performed at said networking device.
Claim 37
Dependent Claim
173 words
A hub for use in a wireless communications network, said hub comprising an antenna which a) a receives modulated communications signals as a block of spectrum from a plurality of repeaters via respective radio links, said repeaters being placed within line-of-sight of said hub, and arranged to receive from nearby mobile end-users devices wireless end-user signals that are processed in said repeaters to produce said modulated communications signals, and b) transmits to said repeaters via said radio links information signals received from a networking device of said wireless communications network; a polarization duplexer that uses orthogonal polarizations to associate each received communications signal to a particular repeater that transmitted thereto said communications signal; a first processor which converts said information signals into a format suitable for transmission over said respective radio links; and a second processor which demodulates said modulated communications signals to produce demodulated near baseband signals that are subsequently up converted to a selected carrier frequency for communication to a transceiver which terminates a transmission link connected to said networking device.
Claim 38
Dependent Claim
173 words
A hub for use in a wireless communications network, said hub comprising an antenna which a) a receives modulated communications signals as a block of spectrum from a plurality of repeaters via respective radio links, said repeaters being placed within line-of-sight of said hub, and arranged to receive from nearby mobile end-users devices wireless end-user signals that are processed in said repeaters to produce said modulated communications signals, and b) transmits to said repeaters via said radio links information signals received from a networking device of said wireless communications network; a polarization duplexer that uses orthogonal polarizations to associate each received communications signal to a particular repeater that transmitted thereto said communications signal; a first processor which converts said information signals into a format suitable for transmission over said respective radio links; and a second processor which demodulates said modulated communications signals to produce demodulated near baseband signals that are subsequently up converted to a selected carrier frequency for communication to a transceiver which terminates a transmission link connected to said networking device.
Claim 39
Dependent Claim
50 words
The invention of claim 31 wherein said hub further includes: at least one duplexer a) which separates information signals transmitted to a particular one of said repeaters from communications signals received from said particular one of said repeaters, and b) separates information signals transmitted to different ones of said repeaters.
Claim 40
Dependent Claim
39 words
The invention of claim 31 wherein said carrier frequency is selected such that frequencies of third order intermodulation products for said near baseband signals fall in parts of the spectrum of said transmission link where no signals are present.
References Cited (Backward Citations)
US4333076A
Cited
US4606054A
Cited
US4941200A
Cited
US5247269A
Cited
US5509028A
Cited
US5526348A
Cited
US5564072A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-03-29 | 2002-09-28 | 2003-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-03-29 | 2006-09-28 | 2007-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-03-29 | 2010-09-28 | 2011-03-30 | $7700.00 | Window Closed / Lapsed |