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US6002673A
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Method for channel management in a TDMA communication system
Assignee: Nokia of America Corp
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Filing: 1997-03-21
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Granted: 1999-12-14
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Expires: 2017-03-21
Abstract
Abstract Interference signal power in a TDMA communication system is determined by taking samples of a received signal. The TDMA system has a plurality of communication frequencies with sequences of frames communicated at each of the communication frequencies. Each of the frames contain a plurality of time slots, where each time slot is associated with a communication channel. The interference signal power is determined by receiving a signal at one of the plurality of communication frequencies. The signal is sampled for at least one frame period. The interference signal power is calculated using the M larger amplitude samples of the signal, where M is the number of samples that are taken during a period of time that corresponds to a length of one time slot.
Inventors
- 👤 Colin Leon Kahn
- 👤 Michael D. Turner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:10
CPC Classifications
H; H04; H04L; H04L1/00; H04L1/20
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
137 words
A method for determining interference signal power in a TDMA communication system having a plurality of communication frequencies with sequences of frames communicated at each of the communication frequencies, each of the frames containing a plurality of time slots, where each time slot is associated with a communication channel, the method comprising the steps of: receiving a signal at one of the plurality of communication frequencies; sampling the signal for at least one half-frame period to produce N samples of the signal; and using M of the N samples to calculate the interference signal power, where the M samples are larger amplitude samples of the signal, where M is the number of samples that are taken during a period of time that corresponds to a length of one time slot and where M is less than N.
Claim 2
Independent Claim
137 words
A method for determining interference signal power in a TDMA communication system having a plurality of communication frequencies with sequences of frames communicated at each of the communication frequencies, each of the frames containing a plurality of time slots, where each time slot is associated with a communication channel, the method comprising the steps of: receiving a signal at one of the plurality of communication frequencies; sampling the signal for at least one half-frame period to produce N samples of the signal; and using M of the N samples to calculate the interference signal power, where the M samples are larger amplitude samples of the signal, where M is the number of samples that are taken during a period of time that corresponds to a length of one time slot and where M is less than N.
Claim 3
Independent Claim
164 words
A method for determining interference signal power in a TDMA communication system having a plurality of communication frequencies with sequences of frames communicated at each of the communication frequencies, each of the frames containing a plurality of time slots, where each time slot is associated with a communication channel and where a shorter message in a time slot is substituted for a longer message in the time slot when an absence of a voice signal is detected, the method comprising the steps of: receiving a signal at one of the plurality of communication frequencies; sampling the signal for at least one half-frame period to produce N samples of the signal; and using M of the N samples to calculate the interference signal power, where the M samples are larger amplitude samples of the signal, where M is the number of samples that are taken during a period of time that corresponds to a length of a shorter message and M is less than N.
Claim 4
Independent Claim
164 words
A method for determining interference signal power in a TDMA communication system having a plurality of communication frequencies with sequences of frames communicated at each of the communication frequencies, each of the frames containing a plurality of time slots, where each time slot is associated with a communication channel and where a shorter message in a time slot is substituted for a longer message in the time slot when an absence of a voice signal is detected, the method comprising the steps of: receiving a signal at one of the plurality of communication frequencies; sampling the signal for at least one half-frame period to produce N samples of the signal; and using M of the N samples to calculate the interference signal power, where the M samples are larger amplitude samples of the signal, where M is the number of samples that are taken during a period of time that corresponds to a length of a shorter message and M is less than N.
Claim 5
Independent Claim
187 words
A method for determining interference signal power in a TDMA communication system having a plurality of communication frequencies with sequences of frames communicated at each of the communication frequencies, each of the frames containing a plurality of time slots, where each time slot is associated with a communication channel and where a shorter message in a time slot is substituted for a longer message in the time slot when an absence of a voice signal is detected, the method comprising the steps of: receiving a signal at one of the plurality of communication frequencies; sampling the signal for at least one time slot to produce N samples of the signal; synchronizing the sampling to begin at a start of a time slot and to end at an end of the time slot; and using M of the N samples to calculate the interference signal power, where the M samples are larger amplitude samples of the signal, where M is the number of samples that are taken during a period of time that corresponds to a length of a shorter message and where M is less than N.
Claim 6
Independent Claim
187 words
A method for determining interference signal power in a TDMA communication system having a plurality of communication frequencies with sequences of frames communicated at each of the communication frequencies, each of the frames containing a plurality of time slots, where each time slot is associated with a communication channel and where a shorter message in a time slot is substituted for a longer message in the time slot when an absence of a voice signal is detected, the method comprising the steps of: receiving a signal at one of the plurality of communication frequencies; sampling the signal for at least one time slot to produce N samples of the signal; synchronizing the sampling to begin at a start of a time slot and to end at an end of the time slot; and using M of the N samples to calculate the interference signal power, where the M samples are larger amplitude samples of the signal, where M is the number of samples that are taken during a period of time that corresponds to a length of a shorter message and where M is less than N.
References Cited (Backward Citations)
US5355514A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-12-13 | 2003-06-14 | 2003-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-12-13 | 2007-06-14 | 2007-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-12-13 | 2011-06-14 | 2011-12-14 | $7700.00 | Window Closed / Lapsed |