Patent US6097947A successfully refreshed from Google Patents.
US6097947A
Expired / Lapsed
US
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Method for detecting failure mobile station in cellular mobile communication network through transmission power control
Assignee: NEC Corp
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Filing: 1998-04-14
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Granted: 2000-08-01
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Expires: 2018-04-14
Abstract
Abstract A cellular mobile communication network in a code division multiple access system includes plural mobile stations and at least one base station, and the at least one base station periodically supplies a transmission power control instruction representative of decrease or increase of the transmission power of a transmit signal from each mobile station to the at least one base station; when the base station receives the transmit signal from a mobile station, the base station measures the electric power to see whether or not the mobile station is faithful to the transmission power control instruction; if the mobile station repeats the disobedience, the mobile station is diagnosed to be a failure station serving as a serious interference power source.
Inventors
- 👤 Kenichi Takai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:50
CPC Classifications
H; H04; H04W; H04W52/00; H04W52/02; H04W24/00; H04W24/08; H04W52/04; H04W52/54; H04W52/56
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
202 words
A method for detecting a failure mobile station forming a wireless communication network together with at least one base station, comprising: a) determining the electric power of a first signal supplied from said failure mobile station to said at least one base station by said at least one base station; b) supplying a transmission power control instruction from said at least one base station to said mobile station; c) changing the electric power of a second signal to be supplied from said mobile station to said at least one base station by said failure mobile station in response to said transmission power control instruction; d) determining the electric power of said second signal supplied from said mobile station to said at least one base station by said at least one base station; e) comparing said electric power of said second signal with said electric power of said first signal to see whether or not a relative relation therebetween is consistent with said transmission power control instruction by said at least one base station; and f) diagnosing said mobile station as a failure station by said at least one base station when said relative relation is inconsistent with said transmission power control instruction.
Claim 2
Independent Claim
202 words
A method for detecting a failure mobile station forming a wireless communication network together with at least one base station, comprising: a) determining the electric power of a first signal supplied from said failure mobile station to said at least one base station by said at least one base station; b) supplying a transmission power control instruction from said at least one base station to said mobile station; c) changing the electric power of a second signal to be supplied from said mobile station to said at least one base station by said failure mobile station in response to said transmission power control instruction; d) determining the electric power of said second signal supplied from said mobile station to said at least one base station by said at least one base station; e) comparing said electric power of said second signal with said electric power of said first signal to see whether or not a relative relation therebetween is consistent with said transmission power control instruction by said at least one base station; and f) diagnosing said mobile station as a failure station by said at least one base station when said relative relation is inconsistent with said transmission power control instruction.
Claim 3
Dependent Claim
37 words
The method as set forth in claim 1, wherein the electric power is averaged during a certain period so as to determine said electric power of said first signal and said electric power of said second signal.
Claim 4
Dependent Claim
22 words
The method as set forth in claim 1, wherein said transmission power control instruction is representative of a decrease of transmission power.
Claim 5
Dependent Claim
30 words
The method as set forth in claim 1, wherein said mobile station and said at least one base station form a cellular mobile communication network together with other mobile stations.
Claim 6
Dependent Claim
23 words
The method as set forth in claim 4, wherein said cellular mobile communication network is established in a code division multiple access technology.
Claim 7
Independent Claim
172 words
A method for detecting a failure mobile station forming a wireless communication network together with at least one base station, comprising: a) determining the electric power of a first signal received by said at least one base station; b) supplying a transmission power control instruction to said mobile station; c) changing the electric power of a second signal to be supplied from said mobile station to said at least one base station in response to said transmission power control instruction; d) determining the electric power of said second signal received by said at least one base station; e) comparing said electric power of said second signal with said electric power of said first signal to see whether or not a relative relation therebetween is consistent with said transmission power control instruction; (f) repeating said step a) to said step e) until the inconsistency is repeated a predetermined number of times; and g) diagnosing said mobile station as a failure station when said relative relation is inconsistent with said transmission power control instruction.
Claim 8
Independent Claim
172 words
A method for detecting a failure mobile station forming a wireless communication network together with at least one base station, comprising: a) determining the electric power of a first signal received by said at least one base station; b) supplying a transmission power control instruction to said mobile station; c) changing the electric power of a second signal to be supplied from said mobile station to said at least one base station in response to said transmission power control instruction; d) determining the electric power of said second signal received by said at least one base station; e) comparing said electric power of said second signal with said electric power of said first signal to see whether or not a relative relation therebetween is consistent with said transmission power control instruction; (f) repeating said step a) to said step e) until the inconsistency is repeated a predetermined number of times; and g) diagnosing said mobile station as a failure station when said relative relation is inconsistent with said transmission power control instruction.
Claim 9
Independent Claim
160 words
A method for detecting a failure mobile station forming a wireless communication network together with at least one base station, comprising: a) determining a power of a first signal received by said at least one base station; b) supplying a transmission power control instruction to said mobile station; c) changing a power of a second signal to be supplied from said mobile station to said at least one base station in response to said transmission power control instruction; d) determining the power of said second signal received by said at least one base station; e) comparing said power of said second signal with said power of said first signal to judge whether a relative relation therebetween is consistent with said transmission power control instruction; and f) determining said mobile station is a failure station if said relative relation continues not to be is not consistent with said transmission power control instruction, then repeating said step a) to said step e).
Claim 10
Independent Claim
160 words
A method for detecting a failure mobile station forming a wireless communication network together with at least one base station, comprising: a) determining a power of a first signal received by said at least one base station; b) supplying a transmission power control instruction to said mobile station; c) changing a power of a second signal to be supplied from said mobile station to said at least one base station in response to said transmission power control instruction; d) determining the power of said second signal received by said at least one base station; e) comparing said power of said second signal with said power of said first signal to judge whether a relative relation therebetween is consistent with said transmission power control instruction; and f) determining said mobile station is a failure station if said relative relation continues not to be is not consistent with said transmission power control instruction, then repeating said step a) to said step e).
Claim 11
Dependent Claim
35 words
The method as set forth in claim 7, wherein said step a) to said step e) is repeated a predetermined number of times until said relative relation becomes consistent with said transmission power control instruction.
Claim 12
Dependent Claim
38 words
The method as set forth in claim 7, further comprising: if, in step e), said relative relation is judged not to be consistent with said transmission power control instruction, then diagnosing said mobile station as a failure station.
Claim 13
Dependent Claim
34 words
The method as set forth in claim 7, wherein the power is averaged during a certain period so as to determine said power of said first signal and said power of said second signal.
Claim 14
Dependent Claim
22 words
The method as set forth in claim 7, wherein said transmission power control instruction is representative of a decrease of transmission power.
Claim 15
Dependent Claim
14 words
The method as set forth in claim 7, wherein said power comprises electric power.
Claim 16
Dependent Claim
30 words
The method as set forth in claim 7, wherein said mobile station and said at least one base station form a cellular mobile communication network together with other mobile stations.
Claim 17
Dependent Claim
23 words
The method as set forth in claim 13, wherein said cellular mobile communication network is established in a code division multiple access technology.
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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) | 2003-08-01 | 2004-01-31 | 2004-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-08-01 | 2008-01-31 | 2008-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-08-01 | 2012-01-31 | 2012-08-01 | $7700.00 | Window Closed / Lapsed |