Patent US5873047A successfully refreshed from Google Patents.
US5873047A
Expired / Lapsed
US
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Method for setting up perch channels in mobile communication by cellular system
Assignee: NTT Docomo Inc
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Filing: 1996-10-09
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Granted: 1999-02-16
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Expires: 2016-10-09
Abstract
Abstract A method for setting up perch channels in a mobile communication by a cellular system, capable of setting up a perch channel and a perch channel list for surrounding base stations at each newly provided base station autonomously. At the newly provided base station, reception levels of signals transmitted by mobile stations to surrounding base stations are measured by scanning uplink control channels corresponding to perch channels, and a perch channel of the newly provided base station and a perch channel list to be signaled by the newly provided base station are autonomously set according to the measured reception levels. Alternatively, reception levels of signals transmitted through perch channels by surrounding base stations are measured while receiving perch channel lists signaled by the surrounding base stations, and a perch channel of the newly provided base station and a perch channel list to be signaled by the newly provided base station are autonomously set according to the measured reception levels and the received perch channel lists of the surrounding base stations.
Inventors
- 👤 Etsuhiro Nakano
- 👤 Narumi Umeda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:07
CPC Classifications
H; H04; H04W; H04W16/00; H04W16/02; H04W16/10; H04W48/00; H04W48/08; H04W48/12
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
106 words
A method for setting up perch channels in a mobile communication by a cellular system having a plurality of base stations including a newly provided base station and mobile stations, the method comprising the steps of: measuring reception levels of signals transmitted by mobile stations to surrounding base stations at the newly provided base station by scanning uplink control channels corresponding to perch channels; and setting a perch channel of the newly provided base station and a perch channel list to be signaled by the newly provided base station, autonomously at the newly provided base station, according to the reception levels measured at the measuring step.
Claim 2
Independent Claim
106 words
A method for setting up perch channels in a mobile communication by a cellular system having a plurality of base stations including a newly provided base station and mobile stations, the method comprising the steps of: measuring reception levels of signals transmitted by mobile stations to surrounding base stations at the newly provided base station by scanning uplink control channels corresponding to perch channels; and setting a perch channel of the newly provided base station and a perch channel list to be signaled by the newly provided base station, autonomously at the newly provided base station, according to the reception levels measured at the measuring step.
Claim 3
Dependent Claim
79 words
The method of claim 1, wherein the setting step sets the perch channel of the newly provided base station by obtaining a frequency for having a measured reception level over a prescribed threshold value TH1 for each uplink control channel, and selecting one perch channel from perch channels other than those corresponding to those uplink control channels for which the obtained frequency is over a prescribed threshold value TH2, as the perch channel of the newly provided base station.
Claim 4
Dependent Claim
80 words
The method of claim 1, wherein the setting step sets the perch channel list to be signaled by the newly provided base station by obtaining a frequency for having a measured reception level over a prescribed threshold value TH3 for each uplink control channel, and setting perch channels corresponding to those uplink control channels for which the obtained frequency is over a prescribed threshold value TH4 into the perch channel list to be signaled by the newly provided base station.
Claim 5
Dependent Claim
122 words
The method of claim 1, further comprising the steps of: measuring reception levels of signals transmitted by mobile stations to surrounding base stations at each already operating base station by scanning uplink control channels corresponding to perch channels; and re-setting at each already operating base station a perch channel list to be signaled by each already operating base station, by obtaining a frequency for having a measured reception level over a prescribed threshold value TH3 for each uplink control channel at each already operating base station, and setting perch channels corresponding to those uplink control channels for which the obtained frequency is over a prescribed threshold value TH4 into the perch channel list to be signaled by each already operating base station.
Claim 6
Dependent Claim
106 words
The method of claim 4, further comprising the steps of: measuring reception levels of signals transmitted through perch channels by surrounding base stations at each already operating base station by scanning the perch channels before scanning the uplink control channels; and limiting the uplink control channels to be scanned at each already operating base station to those corresponding to perch channels for which a measured reception level is over a prescribed threshold value TH8 and perch channels contained in perch channel lists signaled by those surrounding base stations which are using perch channels for which a measured reception level is over a prescribed threshold value TH9.
Claim 7
Dependent Claim
106 words
The method of claim 1, further comprising the steps of: measuring reception levels of signals transmitted through perch channels by surrounding base stations at the newly provided base station by scanning the perch channels before scanning the uplink control channels; and limiting the uplink control channels to be scanned at the newly provided base station to those corresponding to perch channels for which a measured reception level is over a prescribed threshold value TH8 and perch channels contained in perch channel lists signaled by those surrounding base stations which are using perch channels for which a measured reception level is over a prescribed threshold value TH9.
Claim 8
Dependent Claim
81 words
The method of claim 1, further comprising the steps of: measuring reception levels of signals transmitted through perch channels by surrounding base stations at each already operating base station; and re-setting at each already operating base station a perch channel list to be signaled by each already operating base station, by setting perch channels for which a measured reception level is over a prescribed threshold value TH7 into the perch channel list to be signaled by each already operating base station.
Claim 9
Dependent Claim
84 words
The method of claim 1, further comprising the steps of: selecting base stations using perch channels contained in said perch channel list; notifying each selected base station of the newly provided base station's perch channel by sending a notification from the newly provided base station to the selected base stations via a network; and adding the perch channel of the newly provided base station notified at the notifying step into the perch channel list to be signaled by each of the selected base stations.
Claim 10
Independent Claim
118 words
A method for setting up perch channels in a mobile communication by a cellular system having a plurality of base stations including a newly provided base station and mobile stations, the method comprising the steps of: measuring reception levels of signals transmitted through perch channels by surrounding base stations at the newly provided base station while receiving perch channel lists signaled by the surrounding base stations; and setting a perch channel of the newly provided base station and a perch channel list to be signaled by the newly provided base station, autonomously at the newly provided base station, according to the reception levels and the perch channel lists of the surrounding base stations obtained at the measuring step.
Claim 11
Independent Claim
118 words
A method for setting up perch channels in a mobile communication by a cellular system having a plurality of base stations including a newly provided base station and mobile stations, the method comprising the steps of: measuring reception levels of signals transmitted through perch channels by surrounding base stations at the newly provided base station while receiving perch channel lists signaled by the surrounding base stations; and setting a perch channel of the newly provided base station and a perch channel list to be signaled by the newly provided base station, autonomously at the newly provided base station, according to the reception levels and the perch channel lists of the surrounding base stations obtained at the measuring step.
Claim 12
Dependent Claim
84 words
The method of claim 9, wherein the setting step sets the perch channel of the newly provided base station by selecting one perch channel from perch channels other than those for which a measured reception level is over a prescribed threshold value TH5 and those contained in perch channel lists signaled by those surrounding base stations which are using perch channels for which a measured reception level is over a prescribed threshold value TH6, as the perch channel of the newly provided base station.
Claim 13
Dependent Claim
54 words
The method of claim 9, wherein the setting step sets the perch channel list to be signaled by the newly provided base station by setting perch channels for which a measured reception level is over a prescribed threshold value TH7 into the perch channel list to be signaled by the newly provided base station.
Claim 14
Dependent Claim
81 words
The method of claim 9, further comprising the steps of: measuring reception levels of signals transmitted through perch channels by surrounding base stations at each already operating base station; and re-setting at each already operating base station a perch channel list to be signaled by each already operating base station, by setting perch channels for which a measured reception level is over a prescribed threshold value TH7 into the perch channel list to be signaled by each already operating base station.
Claim 15
Dependent Claim
94 words
The method of claim 9, further comprising the steps of: notifying the perch channel of the newly provided base station set at the setting step from the newly provided base station through a network to selected base stations which are using perch channels contained in the perch channel list to be signaled by the newly provided base station set by the setting step; and adding the perch channel of the newly provided base station notified at the notifying step into the perch channel list to be signaled by each of the selected base stations.
Claim 16
Dependent Claim
118 words
A base station apparatus to be used as a newly provided base station in a mobile communication by a cellular system having a plurality of base stations and mobile stations, the apparatus comprising: transmitter and receiver means for realizing functions of a base station in the cellular system; measurement means for measuring reception levels of signals transmitted by mobile stations to surrounding base stations by scanning uplink control channels corresponding to perch channels; and control means for setting a perch channel of the newly provided base station and a perch channel list to be signaled by the newly provided base station, autonomously at the newly provided base station, according to the reception levels measured by the measurement means.
Claim 17
Dependent Claim
118 words
A base station apparatus to be used as a newly provided base station in a mobile communication by a cellular system having a plurality of base stations and mobile stations, the apparatus comprising: transmitter and receiver means for realizing functions of a base station in the cellular system; measurement means for measuring reception levels of signals transmitted by mobile stations to surrounding base stations by scanning uplink control channels corresponding to perch channels; and control means for setting a perch channel of the newly provided base station and a perch channel list to be signaled by the newly provided base station, autonomously at the newly provided base station, according to the reception levels measured by the measurement means.
Claim 18
Dependent Claim
79 words
The apparatus of claim 14, wherein the control means sets the perch channel of the newly provided base station by obtaining a frequency for having a measured reception level over a prescribed threshold value TH1 for each uplink control channel, and selecting one perch channel from perch channels other than those corresponding to those uplink control channels for which the obtained frequency is over a prescribed threshold value TH2, as the perch channel of the newly provided base station.
Claim 19
Dependent Claim
80 words
The apparatus of claim 14, wherein the control means sets the perch channel list to be signaled by the newly provided base station by obtaining a frequency for having a measured reception level over a prescribed threshold value TH3 for each uplink control channel, and setting perch channels corresponding to those uplink control channels for which the obtained frequency is over a prescribed threshold value TH4 into the perch channel list to be signaled by the newly provided base station.
Claim 20
Dependent Claim
103 words
The apparatus of claim 14, wherein the measurement means also measures reception levels of signals transmitted through perch channels by the surrounding base stations by scanning the perch channels before scanning the uplink control channels, and the control means also limits the uplink control channels to be scanned by the measurement means to those corresponding to perch channels for which a measured reception level is over a prescribed threshold value TH8 and perch channels contained in perch channel lists signaled by those surrounding base stations which are using perch channels for which a measured reception level is over a prescribed threshold value TH9.
Claim 21
Dependent Claim
59 words
The apparatus of claim 14, wherein the control means also comprises, means for selecting base stations using perch channels contained in said perch channel list, and means for notifying each selected base station of the newly provided base station's perch channel by sending a notification from the newly provided base station to the selected base stations via a network.
Claim 22
Dependent Claim
154 words
A base station apparatus to be used as an already operating base station in a mobile communication by a cellular system having a plurality of base stations including a newly provided base station and mobile stations, the apparatus comprising: transmitter and receiver means for realizing functions of a base station in the cellular system; measurement means for measuring reception levels of signals transmitted by mobile stations to surrounding base stations by scanning uplink control channels corresponding to perch channels; and control means for re-setting a perch channel list to be signaled by said already operating base station, by obtaining a frequency for having a measured reception level over a prescribed threshold value TH3 for each uplink control channel, and setting perch channels corresponding to those uplink control channels for which the obtained frequency is over a prescribed threshold value TH4 into the perch channel list to be signaled by said already operating base station.
Claim 23
Dependent Claim
154 words
A base station apparatus to be used as an already operating base station in a mobile communication by a cellular system having a plurality of base stations including a newly provided base station and mobile stations, the apparatus comprising: transmitter and receiver means for realizing functions of a base station in the cellular system; measurement means for measuring reception levels of signals transmitted by mobile stations to surrounding base stations by scanning uplink control channels corresponding to perch channels; and control means for re-setting a perch channel list to be signaled by said already operating base station, by obtaining a frequency for having a measured reception level over a prescribed threshold value TH3 for each uplink control channel, and setting perch channels corresponding to those uplink control channels for which the obtained frequency is over a prescribed threshold value TH4 into the perch channel list to be signaled by said already operating base station.
Claim 24
Dependent Claim
103 words
The apparatus of claim 19, wherein the measurement means also measures reception levels of signals transmitted through perch channels by the surrounding base stations by scanning the perch channels before scanning the uplink control channels, and the control means also limits the uplink control channels to be scanned by the measurement means to those corresponding to perch channels for which a measured reception level is over a prescribed threshold value TH8 and perch channels contained in perch channel lists signaled by those surrounding base stations which are using perch channels for which a measured reception level is over a prescribed threshold value TH9.
Claim 25
Dependent Claim
119 words
A base station apparatus to be used as an already operating base station in a mobile communication by a cellular system having a plurality of base stations including a newly provided base station and mobile stations, the apparatus comprising: transmitter and receiver means for realizing functions of a base station in the cellular system; measurement means for measuring reception levels of signals transmitted through perch channels by surrounding base stations; and control means for re-setting a perch channel list to be signaled by said already operating base station, by setting perch channels for which a measured reception level, is over a prescribed threshold value TH7 into the perch channel list to be signaled by said already operating base station.
Claim 26
Dependent Claim
119 words
A base station apparatus to be used as an already operating base station in a mobile communication by a cellular system having a plurality of base stations including a newly provided base station and mobile stations, the apparatus comprising: transmitter and receiver means for realizing functions of a base station in the cellular system; measurement means for measuring reception levels of signals transmitted through perch channels by surrounding base stations; and control means for re-setting a perch channel list to be signaled by said already operating base station, by setting perch channels for which a measured reception level, is over a prescribed threshold value TH7 into the perch channel list to be signaled by said already operating base station.
Claim 27
Dependent Claim
130 words
A base station apparatus to be used as a newly provided base station in a mobile communication by a cellular system having a plurality of base stations and mobile stations, the apparatus comprising: transmitter and receiver means for realizing functions of a base station in the cellular system; measurement means for measuring reception levels of signals transmitted through perch channels by surrounding base stations while receiving perch channel lists signaled by the surrounding base stations; and control means for setting a perch channel of the newly provided base station and a perch channel list to be signaled by the newly provided base station, autonomously at the newly provided base station, according to the reception levels and the perch channel lists of the surrounding base stations obtained by the measurement means.
Claim 28
Dependent Claim
130 words
A base station apparatus to be used as a newly provided base station in a mobile communication by a cellular system having a plurality of base stations and mobile stations, the apparatus comprising: transmitter and receiver means for realizing functions of a base station in the cellular system; measurement means for measuring reception levels of signals transmitted through perch channels by surrounding base stations while receiving perch channel lists signaled by the surrounding base stations; and control means for setting a perch channel of the newly provided base station and a perch channel list to be signaled by the newly provided base station, autonomously at the newly provided base station, according to the reception levels and the perch channel lists of the surrounding base stations obtained by the measurement means.
Claim 29
Dependent Claim
84 words
The apparatus of claim 22, wherein the control means sets the perch channel of the newly provided base station by selecting one perch channel from perch channels other than those for which a measured reception level is over a prescribed threshold value TH5 and those contained in perch channel lists signaled by those surrounding base stations which are using perch channels for which a measured reception level is over a prescribed threshold value TH6, as the perch channel of the newly provided base station.
Claim 30
Dependent Claim
54 words
The apparatus of claim 22, wherein the control means sets the perch channel list to be signaled by the newly provided base station by setting perch channels for which a measured reception level is over a prescribed threshold value TH7 into the perch channel list to be signaled by the newly provided base station.
Claim 31
Dependent Claim
76 words
The apparatus of claim 22, wherein the control means also notifies the perch channel of the newly provided base station through a network to selected base stations which are using perch channels contained in the perch channel list to be signaled by the newly provided base station, so that the notified perch channel of the newly provided base station is added into the perch channel list to be signaled by each of the selected base stations.
References Cited (Backward Citations)
US4771448A
Cited
JPH02222221A
Cited
US5203008A
Cited
US5257398A
Cited
US5640414A
Cited
US5475868A
Cited
US5666655A
Cited
US5673260A
Cited
US5594943A
Cited
US5584049A
Cited
US5577022A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-02-15 | 2002-08-17 | 2003-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-02-15 | 2006-08-17 | 2007-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-02-15 | 2010-08-17 | 2011-02-16 | $7700.00 | Window Closed / Lapsed |