US5887261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for a radio remote repeater in a digital cellular radio communication system
Assignee: Motorola Solutions Inc
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Filing: 1994-09-06
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Granted: 1999-03-23
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Expires: 2014-09-06
Abstract
Abstract A digital cellular radio communication system having a remote repeater is provided. The communication system includes a central communication site which: transmits and receives signals in a first radio channel assigned according to a cellular communication system channel reuse plan, transmits signals to and receives signals from a cellular communication network unit, and digitally processes received signals for subsequent transmission in the first radio channel or to the cellular communication network unit. The communication system further includes a remote communication site, substantially remotely located from the central communication site, which: receives a signal in either the first radio channel or a second radio channel assigned according to the cellular communication system channel reuse plan, channel shifts the received signal between the first and the second radio channels, and transmits the shifted signal in the other of the first and the second radio channels.
Inventors
- 👤 John Csapo
- 👤 Brian Cheng-Jean Chen
- 👤 Kenneth Blake Hallman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:30
CPC Classifications
H; H04; H04W; H04W16/00; H04W16/24; H04W16/26; H04B; H04B7/00; H04B7/24; H04B7/26; H04B7/2603; H04B7/2606
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
280 words
A cellular communication system comprising: a central transceiver operable for transmitting and receiving radio frequency signals on traffic channels with a first mobile communication unit operating within a first coverage area and with a remote transceiver and for communicating with a cellular communication network, a traffic channel comprising a transmit data slot for transmitting signals and a receive data slot for receiving signals, the remote transceiver being operable for transmitting and receiving radio frequency signals on traffic channels with a second mobile communication unit operating in a second coverage area remotely located from the central transceiver and with the central transceiver, wherein both the remote transceiver and the first mobile communication unit operating in the first coverage area are responsive to the central transceiver via a first radio frecuency control channel; a controller associated with the central transceiver operable to assign via the first radio frequency control channel traffic channels for radio frequency communication between the central transceiver and either of the remote transceiver or the first mobile communication unit operating within the first coverage area; and a controller associated with the remote transceiver operable to assign via a second radio frequency control channel a first traffic channel for radio frequency communication between the remote transceiver and the second mobile communication unit operating within the second coverage area and operable to request the central transceiver to assign a second traffic channel for radio frequency communication between the central transceiver and the remote transceiver, wherein the mobile communication unit operating in the second coverage area exchanges signals with the remote transceiver on the first traffic channel and the signals are further communicated to the central transceiver via the second traffic channel.
Claim 2
Dependent Claim
280 words
A cellular communication system comprising: a central transceiver operable for transmitting and receiving radio frequency signals on traffic channels with a first mobile communication unit operating within a first coverage area and with a remote transceiver and for communicating with a cellular communication network, a traffic channel comprising a transmit data slot for transmitting signals and a receive data slot for receiving signals, the remote transceiver being operable for transmitting and receiving radio frequency signals on traffic channels with a second mobile communication unit operating in a second coverage area remotely located from the central transceiver and with the central transceiver, wherein both the remote transceiver and the first mobile communication unit operating in the first coverage area are responsive to the central transceiver via a first radio frecuency control channel; a controller associated with the central transceiver operable to assign via the first radio frequency control channel traffic channels for radio frequency communication between the central transceiver and either of the remote transceiver or the first mobile communication unit operating within the first coverage area; and a controller associated with the remote transceiver operable to assign via a second radio frequency control channel a first traffic channel for radio frequency communication between the remote transceiver and the second mobile communication unit operating within the second coverage area and operable to request the central transceiver to assign a second traffic channel for radio frequency communication between the central transceiver and the remote transceiver, wherein the mobile communication unit operating in the second coverage area exchanges signals with the remote transceiver on the first traffic channel and the signals are further communicated to the central transceiver via the second traffic channel.
Claim 3
Dependent Claim
19 words
The cellular communication system of claim 1 wherein the data slots are time division multiple access (TDMA) time slots.
Claim 4
Dependent Claim
19 words
The cellular communication system of claim 1 wherein the data slots are code division multiple access (CDMA) code slots.
Claim 5
Dependent Claim
22 words
The cellular communication system of claim 1 wherein the central transceiver receives signals from the remote transceiver in the transmit data slot.
Claim 6
Dependent Claim
22 words
The cellular communication system of claim 1 wherein the central transceiver transmits signals to the remote transceiver in the receive data slot.
Claim 7
Dependent Claim
22 words
The cellular communication system of claim 1 wherein the remote transceiver receives signals from the central transceiver in the transmit data slot.
Claim 8
Dependent Claim
22 words
The cellular communication system of claim 1 wherein the remote transceiver transmits signals to the central transceiver in the receive data slot.
Claim 9
Dependent Claim
45 words
The cellular communication system of claim 1 further comprising a plurality of remote transceivers, each remote transceiver being operable for transmitting and receiving signals on communication channels within an associated coverage area remotely located from the central communication site and with the central communication site.
Claim 10
Dependent Claim
38 words
The cellular communication system of claim 8 further comprising a common communication channel for mobile communication units operating in the first coverage area or the remote transceivers to request assignment of a communication channel from the central transceiver.
Claim 11
Dependent Claim
37 words
The cellular communication system of claim 9 further comprising a common communication channel for mobile communication units operating in the coverage areas of the remote transceivers to request assignment of a communication channels from the remote transceivers.
Claim 12
Independent Claim
273 words
A method of extending a cellular communication system comprising: (a) receiving at a remote transceiver a request for a communication channel assignment from a first mobile communication unit operating within a coverage area of the remote transceiver; (b) in response to the request for the communication channel assignment, assigning a first communication channel for communication between the remote transceiver and the first mobile communication unit; (c) sending from the remote transceiver a request for communication channel assignment to a central transceiver via a control channel, the control channel being used for communicating the communication channel assignment between the central transceiver and the remote transceiver and being used for communicating the communication channel assignment between the central transceiver and a second mobile communication unit operating within a coverage area of the central transceiver; (d) receiving at the central transceiver the request for the communication channel assignment from the remote transceiver and in response to the request for the communication channel assignment, assigning a second communication channel for communication between the central transceiver and the remote transceiver; (e) transmitting signals from the first mobile communication unit to the remote transceiver in a first data slot of the first communication channel; (f) transmitting the signals received from the first mobile communication unit at the remote transceiver to the central transceiver in a first data slot of the second communication channel; (g) transmitting signals from the central communication site to the remote transceiver in a second data slot of the second communication channel; and (f) transmitting signals from the remote transceiver to the first mobile communication unit in a second data slot of the first communication channel.
Claim 13
Independent Claim
273 words
A method of extending a cellular communication system comprising: (a) receiving at a remote transceiver a request for a communication channel assignment from a first mobile communication unit operating within a coverage area of the remote transceiver; (b) in response to the request for the communication channel assignment, assigning a first communication channel for communication between the remote transceiver and the first mobile communication unit; (c) sending from the remote transceiver a request for communication channel assignment to a central transceiver via a control channel, the control channel being used for communicating the communication channel assignment between the central transceiver and the remote transceiver and being used for communicating the communication channel assignment between the central transceiver and a second mobile communication unit operating within a coverage area of the central transceiver; (d) receiving at the central transceiver the request for the communication channel assignment from the remote transceiver and in response to the request for the communication channel assignment, assigning a second communication channel for communication between the central transceiver and the remote transceiver; (e) transmitting signals from the first mobile communication unit to the remote transceiver in a first data slot of the first communication channel; (f) transmitting the signals received from the first mobile communication unit at the remote transceiver to the central transceiver in a first data slot of the second communication channel; (g) transmitting signals from the central communication site to the remote transceiver in a second data slot of the second communication channel; and (f) transmitting signals from the remote transceiver to the first mobile communication unit in a second data slot of the first communication channel.
Claim 14
Dependent Claim
17 words
The method of claim 11 wherein the data slots are time division multiple access (TDMA) time slots.
Claim 15
Dependent Claim
17 words
The method of claim 11 wherein the data slots are code division multiple access (CDMA) code slots.
Claim 16
Dependent Claim
17 words
The method of claim 11 wherein step (a) further comprises receiving on a first common communication channel.
Claim 17
Dependent Claim
17 words
The method of claim 11 wherein step (c) further comprises sending on a second common communication channel.
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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) | 2002-03-22 | 2002-09-21 | 2003-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-03-22 | 2006-09-21 | 2007-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-03-22 | 2010-09-21 | 2011-03-23 | $7700.00 | Window Closed / Lapsed |