US6134442A
Expired / Lapsed
US
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Controlling operations in a cellular system using neighbor association-based cost values
Assignee: Nokia of America Corp
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Filing: 1998-03-05
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Granted: 2000-10-17
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Expires: 2018-03-05
Abstract
Abstract Operations in a cellular system are controlled based on cost values that are generated using neighbor association. In neighbor association, each cost value corresponds to a cost of assigning a candidate channel to a first cell in the cellular system, assuming that the candidate channel is already assigned to a second cell in the cellular system and each cost value is based on an average power attenuation for all of the cells in the cellular system that share the same tier as the second cell with respect to the first cell, wherein the average power attenuation is based on the reuse distances between the first cell and the cells in the same tier. In one embodiment, the cost values are used in a cost-function-based dynamic channel assignment (DCA) algorithm that is, but does not have to be, applied to a list of candidate channels generated using a measurement-based DCA algorithm.
Inventors
- 👤 Simon C. Borst
- 👤 Terry Si-Fong Cheng
- 👤 Sudheer A. Grandhi
- 👤 Joe Huang
- 👤 Colin L. Kahn
- 👤 Krishnan Kumaran
- 👤 Bulin B. Zhang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:52
CPC Classifications
H; H04; H04W; H04W16/00; H04W16/02; H04W16/10; H04W16/06
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
84 words
A method for controlling operations in a cellular system, comprising the steps of: (a) generating cost values for cell pairs in the cellular system, wherein each cost value corresponds to a cost of assigning a candidate channel to a first cell in the cellular system, assuming that the candidate channel is already assigned to a second cell in the cellular system and each cost value is based on reuse distances; and (b) using the cost values to dynamically control operations in the cellular system.
Claim 2
Independent Claim
84 words
A method for controlling operations in a cellular system, comprising the steps of: (a) generating cost values for cell pairs in the cellular system, wherein each cost value corresponds to a cost of assigning a candidate channel to a first cell in the cellular system, assuming that the candidate channel is already assigned to a second cell in the cellular system and each cost value is based on reuse distances; and (b) using the cost values to dynamically control operations in the cellular system.
Claim 3
Dependent Claim
66 words
The invention of claim 1, wherein each cost value is based on an average power attenuation for all of the cells in the cellular system that share the same tier as the second cell with respect to the first cell, wherein the average power attenuation is based on the reuse distances between the first cell and the cells in the same tier as the second cell.
Claim 4
Dependent Claim
22 words
The invention of claim 1, wherein step (b) comprises the step of dynamically selecting and using a channel for a new call.
Claim 5
Dependent Claim
18 words
The invention of claim 3, wherein the channel is selected using a cost-function-based dynamic channel assignment (CFBDCA) algorithm.
Claim 6
Dependent Claim
26 words
The invention of claim 4, wherein the CFBDCA algorithm is applied to a list of candidate channels generated by a measurement-based dynamic channel assignment (MBDCA) algorithm.
Claim 7
Dependent Claim
98 words
The invention of claim 5, wherein: each cost value is based on an average power attenuation for all of the cells in the cellular system that share the same tier as the second cell with respect to the first cell, wherein the average power attenuation is based on the reuse distances between the first cell and the cells in the same tier as the second cell; and each cost value is a weighted average that takes into account the number of different cells in each tier that have the same reuse distance with respect to the first cell.
Claim 8
Dependent Claim
37 words
The invention of claim 1, wherein each cost value is a weighted average that takes into account the number of different cells in each tier that have the same reuse distance with respect to the first cell.
Claim 9
Dependent Claim
95 words
A cellular system, comprising: (a) a mobile switching center (MSC); and (b) a plurality of cell sites, communicating with the MSC, wherein: the MSC generates cost values for cell pairs in the cellular system, wherein each cost value corresponds to a cost of assigning a candidate channel to a first cell in the cellular system, assuming that the candidate channel is already assigned to a second cell in the cellular system and each cost value is based on reuse distances; and the MSC uses the cost values to dynamically control operations in the cellular system.
Claim 10
Dependent Claim
95 words
A cellular system, comprising: (a) a mobile switching center (MSC); and (b) a plurality of cell sites, communicating with the MSC, wherein: the MSC generates cost values for cell pairs in the cellular system, wherein each cost value corresponds to a cost of assigning a candidate channel to a first cell in the cellular system, assuming that the candidate channel is already assigned to a second cell in the cellular system and each cost value is based on reuse distances; and the MSC uses the cost values to dynamically control operations in the cellular system.
Claim 11
Dependent Claim
66 words
The invention of claim 8, wherein each cost value is based on an average power attenuation for all of the cells in the cellular system that share the same tier as the second cell with respect to the first cell, wherein the average power attenuation is based on the reuse distances between the first cell and the cells in the same tier as the second cell.
Claim 12
Dependent Claim
27 words
The invention of claim 8, wherein the MSC dynamically selects a channel for a new call and a cell site uses the channel for the new call.
Claim 13
Dependent Claim
14 words
The invention of claim 10, wherein the channel is selected using a CFBDCA algorithm.
Claim 14
Dependent Claim
22 words
The invention of claim 11, wherein the CFBDCA algorithm is applied to a list of candidate channels generated by an MBDCA algorithm.
Claim 15
Dependent Claim
98 words
The invention of claim 12, wherein: each cost value is based on an average power attenuation for all of the cells in the cellular system that share the same tier as the second cell with respect to the first cell, wherein the average power attenuation is based on the reuse distances between the first cell and the cells in the same tier as the second cell; and each cost value is a weighted average that takes into account the number of different cells in each tier that have the same reuse distance with respect to the first cell.
Claim 16
Dependent Claim
37 words
The invention of claim 8, wherein each cost value is a weighted average that takes into account the number of different cells in each tier that have the same reuse distance with respect to the first cell.
Claim 17
Dependent Claim
90 words
A mobile switching center (MSC) for a cellular system further comprising a plurality of cell sites, wherein: the MSC generates cost values for cell pairs in the cellular system, wherein each cost value corresponds to a cost of assigning a candidate channel to a first cell in the cellular system, assuming that the candidate channel is already assigned to a second cell in the cellular system and each cost value is based on reuse distances; and the MSC uses the cost values to dynamically control operations in the cellular system.
Claim 18
Dependent Claim
90 words
A mobile switching center (MSC) for a cellular system further comprising a plurality of cell sites, wherein: the MSC generates cost values for cell pairs in the cellular system, wherein each cost value corresponds to a cost of assigning a candidate channel to a first cell in the cellular system, assuming that the candidate channel is already assigned to a second cell in the cellular system and each cost value is based on reuse distances; and the MSC uses the cost values to dynamically control operations in the cellular system.
Claim 19
Dependent Claim
66 words
The invention of claim 15, wherein each cost value is based on an average power attenuation for all of the cells in the cellular system that share the same tier as the second cell with respect to the first cell, wherein the average power attenuation is based on the reuse distances between the first cell and the cells in the same tier as the second cell.
Claim 20
Dependent Claim
27 words
The invention of claim 15, wherein the MSC dynamically selects a channel for a new call and a cell site uses the channel for the new call.
Claim 21
Dependent Claim
14 words
The invention of claim 17, wherein the channel is selected using a CFBDCA algorithm.
Claim 22
Dependent Claim
22 words
The invention of claim 18, wherein the CFBDCA algorithm is applied to a list of candidate channels generated by an MBDCA algorithm.
Claim 23
Dependent Claim
98 words
The invention of claim 19, wherein: each cost value is based on an average power attenuation for all of the cells in the cellular system that share the same tier as the second cell with respect to the first cell, wherein the average power attenuation is based on the reuse distances between the first cell and the cells in the same tier as the second cell; and each cost value is a weighted average that takes into account the number of different cells in each tier that have the same reuse distance with respect to the first cell.
Claim 24
Dependent Claim
37 words
The invention of claim 15, wherein each cost value is a weighted average that takes into account the number of different cells in each tier that have the same reuse distance with respect to the first cell.
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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) | 2003-10-17 | 2004-04-17 | 2004-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-10-17 | 2008-04-17 | 2008-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-10-17 | 2012-04-17 | 2012-10-17 | $7700.00 | Window Closed / Lapsed |