Patent US2420873A successfully refreshed from Google Patents.
US6687285B1
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Method and apparatus for supervising the performance of a quick paging channel in a dual event slotted paging system
Assignee: Qualcomm Inc
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Filing: 1999-03-19
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Granted: 2004-02-03
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Expires: 2019-03-19
Abstract
Abstract A mobile station operating in the slotted mode, while monitoring the Quick Paging Channel, monitors the Paging Channel in its assigned slot at least once every N minutes, regardless of what the Quick Paging Channel indicates for that slot. The mobile station shall keep a counter for the number of false alarms that have occurred and another counter for the number misses that have occurred. The count of accumulated false alarms (QPCH_FA) and the count of accumulated misses (QPCH_MISS) are stored by the mobile station and will be sent to the base station when so requested. These two counters can be reset at powering-up or by the base station via messaging, or both. When the number of accumulated misses in a given time interval T 1 exceeds a certain threshold N m1 , the mobile station may send a message to inform the base station of this. When the number of accumulated misses in a given time interval T 2 exceeds a threshold N m2 , the mobile station shall monitor the Paging Channel in its assigned slots regardless of what the Quick Paging Channel indicates. T 2 and N m2 could be the same as or different from T 1 and N m1 , respectively. The mobile station returns to follow the Quick Paging Channel indication as to whether to monitor the Paging Channel or not when the number of accumulated misses in a given time interval T 3 drops below a certain threshold N m3 , or when N h1 hits occur in a row, or both.
Inventors
- 👤 Yu-Cheun Jou
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:49
CPC Classifications
H; H04; H04W; H04W68/00; H04W52/00; H04W52/02; H04W52/0209; H04W52/0212; H04W52/0216; H04W52/0219; Y; Y02; Y02D; Y02D30/00; Y02D30/70
Claims Analysis
Total Claims: 37
Claim 1
Independent Claim
95 words
In a communication system wherein a receiver station receives information from a transmitting station, a method for monitoring a performance of a first channel indicative of the presence or absence of a forthcoming message at a receiver station, comprising the steps of: receiving a signal on said first channel; attempting to receive said forthcoming message; determining from said steps of receiving a signal on said first channel and said step of attempting to receive said forthcoming message an indication of the performance of said first channel; and maintaining a performance status of the first channel.
Claim 2
Dependent Claim
95 words
In a communication system wherein a receiver station receives information from a transmitting station, a method for monitoring a performance of a first channel indicative of the presence or absence of a forthcoming message at a receiver station, comprising the steps of: receiving a signal on said first channel; attempting to receive said forthcoming message; determining from said steps of receiving a signal on said first channel and said step of attempting to receive said forthcoming message an indication of the performance of said first channel; and maintaining a performance status of the first channel.
Claim 3
Dependent Claim
33 words
The method of claim 1 further wherein said an indication of the performance of said first channel comprises an assignment of an event as either a hit, a miss, or a false alarm.
Claim 4
Dependent Claim
34 words
The method of claim 1 wherein said an indication of the performance of said first channel comprises an assignment of an event as either a hit, a miss, a false alarm, or an erasure.
Claim 5
Dependent Claim
23 words
The method of claim 1 wherein said step of receiving a signal on a first channel comprises receiving a quick paging channel message.
Claim 6
Dependent Claim
62 words
The method of claim 1 wherein said step of receiving a signal on a first channel comprises the steps of: demodulating a received signal in accordance with a first spreading code to provide a demodulated signal; comparing an energy of said demodulated signal against at least one energy threshold; and determining from said comparison the presence or absence of said forthcoming message.
Claim 7
Dependent Claim
52 words
The method of claim 5 wherein said step of attempting to receive said forthcoming message, comprises the steps of: demodulating said received signal in accordance with a second spreading code to provide said forthcoming message; and determining from data in said forthcoming message said indication of the performance of said first channel.
Claim 8
Dependent Claim
35 words
The method of claim 6 wherein said step of determining from data in said forthcoming message said indication of the performance of said first channel comprises searching for the inclusion of a mobile station identifier.
Claim 9
Dependent Claim
60 words
The method of claim 6 wherein said step of determining from data in said forthcoming message said indication of the performance of said first channel comprises performing a numerical algorithm on an identifier for the receiver station and a numerical algorithm on an identifier found in said forthcoming message and determining whether the result of the two numerical algorithms equate.
Claim 10
Dependent Claim
52 words
The method of claim 1 further comprising the steps of: tracking a time interval between consecutive receptions of each of said forthcoming messages; comparing said time interval against a threshold value; and receiving said forthcoming message irrespective of the indication on said first channel when said time interval exceeds said threshold value.
Claim 11
Dependent Claim
30 words
The method of claim 2 further comprising the step of storing a record of a number of hits, misses, and false alarms that are recorded in a predetermined time interval.
Claim 12
Dependent Claim
30 words
The method of claim 5 further comprising the step of storing a record of a number of hits, misses, and false alarms that are recorded in a predetermined time interval.
Claim 13
Dependent Claim
24 words
The method of claim 11 further comprising the step of adjusting said energy threshold in accordance with said number of misses and false alarms.
Claim 14
Dependent Claim
26 words
The method of claim 12 further comprising the step of said receiver station transmitting a message indicative of the number of misses to said transmitting station.
Claim 15
Dependent Claim
35 words
The method of claim 13 further comprising the steps of: receiving at said transmitting station said number of misses; and adjusting the transmission energy of said first channel in accordance with said number of misses.
Claim 16
Dependent Claim
34 words
The method of claim 13 further comprising the steps of: receiving at said transmitting station said number of misses; and adjusting coding rate of said first channel in accordance with said number of misses.
Claim 17
Dependent Claim
26 words
The method of claim 2 further comprising the step of directly monitoring said forthcoming message when a number of said misses exceeds a predetermined threshold value.
Claim 18
Dependent Claim
84 words
The method of claim 1 further comprising the steps of: transmitting a plurality of known symbols on said first channel wherein at least one of said known symbols represents the presence of a forthcoming message and wherein at least one of said known symbols represents the absence of a forthcoming message; receiving said known symbols; and adjusting an energy threshold value determinative of the detection of the presence or absence of said forthcoming message in accordance with the received energies of said known symbols.
Claim 19
Dependent Claim
40 words
The method of claim 6 wherein said step of determining from data in said forthcoming message said indication of the performance of said first channel comprises searching for an indication of a change in system configuration in said forthcoming message.
Claim 20
Dependent Claim
40 words
The method of claim 6 wherein said step of determining from data in said forthcoming message said indication of the performance of said first channel comprises identifying a sequence number indication within a paging message directed to said receiver station.
Claim 21
Dependent Claim
63 words
The method of claim 1 further comprising the steps of: receiving a second signal with a known relationship between the second signal and the signal on said first channel; measuring the received energy of said second signal; and receiving said forthcoming message without regard to the signal on said first channel when the energy of said second signal is below a predetermined threshold.
Claim 22
Dependent Claim
61 words
A wireless communication system comprising: a base station for transmitting Quick Page Messages on a Quick Paging Channel and Full Page Messages on a Paging Channel; and a mobile station for monitoring the Quick Paging Channel to determine the presence or absence of a Full Page Message on the Paging Channel and maintaining a performance status of the quick Paging Channel.
Claim 23
Dependent Claim
61 words
A wireless communication system comprising: a base station for transmitting Quick Page Messages on a Quick Paging Channel and Full Page Messages on a Paging Channel; and a mobile station for monitoring the Quick Paging Channel to determine the presence or absence of a Full Page Message on the Paging Channel and maintaining a performance status of the quick Paging Channel.
Claim 24
Dependent Claim
63 words
A mobile station comprising: a receiver for receiving an indication message on a first channel indicative of the presence or absence of a forthcoming message on a second channel, and for receiving the forthcoming message on the second channel; and a control processor configured to evaluate the indication message received on the first channel and maintain a performance status of the first channel.
Claim 25
Dependent Claim
63 words
A mobile station comprising: a receiver for receiving an indication message on a first channel indicative of the presence or absence of a forthcoming message on a second channel, and for receiving the forthcoming message on the second channel; and a control processor configured to evaluate the indication message received on the first channel and maintain a performance status of the first channel.
Claim 26
Dependent Claim
48 words
The mobile station as in claim 22 , further comprising: means for measuring energy of the received indication message; means for comparing the energy of the received indication message to a threshold; and declaring an erasure if the energy of the received indication message is below the threshold.
Claim 27
Dependent Claim
30 words
The mobile station as in claim 22 , further comprising: means for periodically monitoring an assigned slot of the second channel regardless of the indication message on the first channel.
Claim 28
Dependent Claim
33 words
The mobile station as in claim 24 , wherein means for periodically monitoring an assigned slot of the second channel, comprises monitoring the assigned slot of the second channel over a time window.
Claim 29
Dependent Claim
16 words
The mobile station as in claim 25 , wherein the time window is a moving window.
Claim 30
Dependent Claim
33 words
The mobile station as in claim 26 , wherein the moving window starts on occurrence of receiving the indication message on the first channel and receiving the corresponding message on the second channel.
Claim 31
Dependent Claim
44 words
The mobile station as in claim 22 , further comprising: first counter responsive to occurrence of a miss; and second counter responsive to occurrence of a hit; and means for determining a status of the first channel based on the first and second counters.
Claim 32
Dependent Claim
43 words
The mobile station as in claim 28 , further comprising: means for comparing a count of the first counter to a threshold; and means for monitoring each assigned slot of the second channel when the count of the first counter exceeds the threshold.
Claim 33
Dependent Claim
73 words
A base station comprising: a control processor generating Quick Paging Messages and Full Page Messages; a transmitter for transmitting the Quick Paging Messages on a Quick Paging Channel and the Full Page Messages on a Paging Channel, said transmitter for transmitting a request for a Quick Paging Channel status update; and a receiver for receiving a Quick Paging Channel status message in response to the request for the Quick Paging Channel status update.
Claim 34
Dependent Claim
73 words
A base station comprising: a control processor generating Quick Paging Messages and Full Page Messages; a transmitter for transmitting the Quick Paging Messages on a Quick Paging Channel and the Full Page Messages on a Paging Channel, said transmitter for transmitting a request for a Quick Paging Channel status update; and a receiver for receiving a Quick Paging Channel status message in response to the request for the Quick Paging Channel status update.
Claim 35
Dependent Claim
26 words
The base station as in claim 30 , wherein the Quick Paging Channel is transmitted at a fixed transmission energy in relation to a pilot channel.
Claim 36
Dependent Claim
93 words
In a communication system, an apparatus for monitoring a performance of a first channel indicative of the presence or absence of a forthcoming message at a receiver station, comprising the steps of: means for receiving a signal on said first channel; means for attempting to receive said forthcoming message; means for determining from said steps of receiving a signal on said first channel and said step of attempting to receive said forthcoming message an indication of the performance of said first channel; and means for maintaining a performance status of the first channel.
Claim 37
Dependent Claim
93 words
In a communication system, an apparatus for monitoring a performance of a first channel indicative of the presence or absence of a forthcoming message at a receiver station, comprising the steps of: means for receiving a signal on said first channel; means for attempting to receive said forthcoming message; means for determining from said steps of receiving a signal on said first channel and said step of attempting to receive said forthcoming message an indication of the performance of said first channel; and means for maintaining a performance status of the first channel.
References Cited (Backward Citations)
US5629940A
Cited
US4845491A
Cited
WO1990010987A2
Cited
US5450071A
Cited
EP0428126A2
Cited
US5537097A
Cited
GB2249409A
Cited
US5301225A
Cited
US5392287A
Cited
US5377183A
Cited
US5686898A
Cited
WO1994009599A1
Cited
US5392452A
Cited
US5382949A
Cited
EP0629095A2
Cited
US5398021A
Cited
US5710784A
Cited
US5481254A
Cited
US5491718A
Cited
US5511067A
Cited
US5485463A
Cited
US6157815A
Cited
US5659573A
Cited
US5511110A
Cited
US5809419A
Cited
US5870678A
Cited
US6002917A
Cited
US5544223A
Cited
US6154637A
Cited
US5870673A
Cited
US5884188A
Cited
US6396867B1
Cited
WO1998054919A2
Cited
US6421540B1
Cited
US5987317A
Cited
US6151311A
Cited
US6161103A
Cited
US5999990A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2007-02-02 | 2007-08-04 | 2008-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-02-02 | 2011-08-04 | 2012-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-02-02 | 2015-08-04 | 2016-02-03 | $7700.00 | Window Closed / Lapsed |