US6256301B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reservation multiple access
Assignee: Qualcomm Inc
•
Filing: 1998-10-15
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Granted: 2001-07-03
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Expires: 2018-10-15
Abstract
Abstract A mobile station accesses a base station by randomly selecting a first reverse link common control channel from a set of random access channels. The mobile station transmits a request portion of an access probe over the first reverse link common control channel. The request portion is subject to collision with other signals. The request portion comprises a hash identification which is derived from a uniquely identifying number using a hash function. The hash identification quasi-uniquely identifies the mobile station. The mobile station receives a channel assignment message from the base station designating the hash identification and a reserved access channel. The reserved access channel provides communication with a low probability of contention. The mobile station transmits a message portion of the access probe over the reserved access channel.
Inventors
- 👤 Edward G. Tiedemann, Jr.
- 👤 Steven J. Howard
- 👤 Rod Walton
- 👤 Mark S. Wallace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:44
CPC Classifications
H; H04; H04W; H04W74/00; H04W74/08; H04W74/0833; H04W74/0841; H04W74/002; H04W28/00; H04W28/16; H04W28/26; H04W52/00; H04W52/04; H04W52/06; H04W52/08; H04W72/00; H04W72/04; H04W72/044; H04W72/0446; H04W72/50; H04W72/54; H04W74/0866
Claims Analysis
Total Claims: 54
Claim 1
Independent Claim
105 words
A method of accessing a base station from a mobile station, comprising the steps of: randomly selecting a first reverse link common control channel from a set of random access channels subject to contention; transmitting a request portion of an access probe over said first reverse link common control channel, said request portion comprising an identification which quasi-uniquely identifies said mobile station; receiving a channel assignment message from said base station designating said identification and a reserved access channel, said reserved access channel providing communication with a low probability of contention; and transmitting a message portion of said access probe over said reserved access channel.
Claim 2
Independent Claim
105 words
A method of accessing a base station from a mobile station, comprising the steps of: randomly selecting a first reverse link common control channel from a set of random access channels subject to contention; transmitting a request portion of an access probe over said first reverse link common control channel, said request portion comprising an identification which quasi-uniquely identifies said mobile station; receiving a channel assignment message from said base station designating said identification and a reserved access channel, said reserved access channel providing communication with a low probability of contention; and transmitting a message portion of said access probe over said reserved access channel.
Claim 3
Dependent Claim
31 words
The method of claim 1 , wherein said step of transmitting said message portion facilitates reception of said message portion by a plurality of sectors associated with a single base station.
Claim 4
Dependent Claim
26 words
The method of claim 1 , wherein said step of transmitting said message portion facilitates reception of said message portion by a plurality of base stations.
Claim 5
Dependent Claim
14 words
The method of claim 1 , wherein said message portion comprises an overhead message.
Claim 6
Dependent Claim
13 words
The method of claim 1 , wherein said message portion comprises user data.
Claim 7
Dependent Claim
24 words
The method of claim 1 , wherein said step of transmitting said message portion occurs at one of a set of available data rates.
Claim 8
Dependent Claim
15 words
The method of claim 1 , wherein said message portion comprises a call origination message.
Claim 9
Dependent Claim
17 words
The method of claim 1 , wherein said message portion is significantly longer than said request portion.
Claim 10
Dependent Claim
34 words
The method of claim 1 , further comprising the step of determining said identification which quasi-uniquely identifies said mobile station from a unique identifying number associated with said mobile station using a hash function.
Claim 11
Dependent Claim
21 words
The method of claim 1 , further comprising the step of randomly selecting said identification which quasi-uniquely identifies said mobile station.
Claim 12
Dependent Claim
41 words
The method of claim 1 , wherein said channel assignment message specifies a wait period to be observed, and wherein the method further comprises the step of delaying said step of transmitting said message portion with reference to said wait period.
Claim 13
Dependent Claim
45 words
The method of claim 1 , wherein said channel assignment message specifies a power control correction amount, and wherein the method further comprises the step of determining a power level at which to transmit said message portion with reference to said power control correction amount.
Claim 14
Dependent Claim
49 words
The method of claim 1 , further comprising the steps of: receiving a power control command over a forward link channel associated with said reserved access channel; and responding to said power control command by increasing or decreasing a power level at which said mobile-station transmits said message portion.
Claim 15
Dependent Claim
19 words
The method of claim 13 , wherein said forward link channel is expressly specified in said channel assignment message.
Claim 16
Dependent Claim
24 words
The method of claim 13 , wherein said power control command is received from a plurality of sectors associated with a single base station.
Claim 17
Dependent Claim
19 words
The method of claim 13 , wherein said power control command is received from a plurality of base stations.
Claim 18
Independent Claim
127 words
A method of accessing a system from a mobile station, comprising the steps of: randomly selecting a first reverse link common control channel from a set of random access channels that are subject to contention; transmitting a request portion of an access probe over said first reverse link common control channel; receiving a channel assignment message designating a reserved access channel, said reserved access channel providing communication with a low probability of contention; transmitting a message portion of said access probe over said reserved access channel; receiving a power control command over a forward link channel associated with said reserved access channel; and responding to said power control command by increasing or decreasing a power level at which said step of transmitting said message portion is executed.
Claim 19
Independent Claim
127 words
A method of accessing a system from a mobile station, comprising the steps of: randomly selecting a first reverse link common control channel from a set of random access channels that are subject to contention; transmitting a request portion of an access probe over said first reverse link common control channel; receiving a channel assignment message designating a reserved access channel, said reserved access channel providing communication with a low probability of contention; transmitting a message portion of said access probe over said reserved access channel; receiving a power control command over a forward link channel associated with said reserved access channel; and responding to said power control command by increasing or decreasing a power level at which said step of transmitting said message portion is executed.
Claim 20
Independent Claim
107 words
An apparatus for accessing a system from a mobile station, comprising: means for randomly selecting a first reverse link common control channel from a set of random access channels that are subject to contention; means for transmitting a request portion of an access probe over said first reverse link common control channel, said request portion comprising an identification which quasi-uniquely identifies said mobile station; means for receiving a channel assignment message designating said identification and a reserved access channel, said reserved access channel providing communication with a low probability of contention; and means for transmitting a message portion of said access probe over a reserved access channel.
Claim 21
Independent Claim
107 words
An apparatus for accessing a system from a mobile station, comprising: means for randomly selecting a first reverse link common control channel from a set of random access channels that are subject to contention; means for transmitting a request portion of an access probe over said first reverse link common control channel, said request portion comprising an identification which quasi-uniquely identifies said mobile station; means for receiving a channel assignment message designating said identification and a reserved access channel, said reserved access channel providing communication with a low probability of contention; and means for transmitting a message portion of said access probe over a reserved access channel.
Claim 22
Dependent Claim
34 words
The apparatus of claim 18 , wherein said means for transmitting said message portion is configured to allow demodulation of said message portion by a plurality of sectors associated with a single base station.
Claim 23
Dependent Claim
29 words
The apparatus of claim 18 , wherein said means for transmitting said message portion is configured to allow demodulation of said message portion by a plurality of base stations.
Claim 24
Dependent Claim
24 words
The apparatus of claim 18 , wherein said means for transmitting said message portion operates at one of a set of available data rates.
Claim 25
Dependent Claim
17 words
The apparatus of claim 18 , wherein said message portion is significantly longer than said request portion.
Claim 26
Dependent Claim
33 words
The apparatus of claim 18 , further comprising means for determining said identification which quasi-uniquely identifies said mobile station from a unique identifying number associated with said mobile station using a hash function.
Claim 27
Dependent Claim
20 words
The apparatus of claim 18 , further comprising means for randomly selecting said identification which quasi-uniquely identifies said mobile station.
Claim 28
Dependent Claim
35 words
The apparatus of claim 18 , wherein said channel assignment message specifies a wait period, and wherein the apparatus further comprises means for delaying transmission of said message portion with reference to said wait period.
Claim 29
Dependent Claim
51 words
The apparatus of claim 18 , further comprising: means for receiving a power control command over a forward link channel associated with said reserved access channel; and means for responding to said power control command by increasing or decreasing a power level at which said mobile station transmits said message portion.
Claim 30
Dependent Claim
34 words
The apparatus of claim 26 , wherein said means for receiving said power control command comprises means for receiving said power control command from a plurality of sectors associated with a single base station.
Claim 31
Dependent Claim
29 words
The apparatus of claim 26 , wherein said means for receiving said power control command comprises means for receiving said power control command from a plurality of base stations.
Claim 32
Dependent Claim
171 words
A mobile station, comprising: a controller configured to randomly select a first reverse link common control channel from a set of random access channels that are subject to contention; a modulator coupled to said controller, said modulator being configured to modulate a request portion of an access probe, said request portion comprising an identification which quasi-uniquely identifies said mobile station; a radio frequency signal processing unit coupled to said modulator, said signal processing unit being configured to transmit said request portion over said first forward link common control channel and configured to receive a channel assignment message designating said identification and a reserved access channel, said reserved access channel providing communication with a low probability of contention; and a demodulator coupled to said radio frequency signal processing unit and said controller, said demodulator configured to demodulate said channel assignment message; said modulator further configured to modulate a message portion of said access probe; said radio frequency signal processing unit further configured to transmit said message portion over said reserved access channel.
Claim 33
Dependent Claim
171 words
A mobile station, comprising: a controller configured to randomly select a first reverse link common control channel from a set of random access channels that are subject to contention; a modulator coupled to said controller, said modulator being configured to modulate a request portion of an access probe, said request portion comprising an identification which quasi-uniquely identifies said mobile station; a radio frequency signal processing unit coupled to said modulator, said signal processing unit being configured to transmit said request portion over said first forward link common control channel and configured to receive a channel assignment message designating said identification and a reserved access channel, said reserved access channel providing communication with a low probability of contention; and a demodulator coupled to said radio frequency signal processing unit and said controller, said demodulator configured to demodulate said channel assignment message; said modulator further configured to modulate a message portion of said access probe; said radio frequency signal processing unit further configured to transmit said message portion over said reserved access channel.
Claim 34
Dependent Claim
37 words
The mobile station of claim 29 , wherein said controller is further configured to derive said identification which quasi-uniquely identifies said mobile station from a uniquely identifying number associated with said mobile station using a hash function.
Claim 35
Dependent Claim
24 words
The mobile station of claim 29 , wherein said controller is further configured to randomly select said identification which quasi-uniquely identifies said mobile station.
Claim 36
Dependent Claim
52 words
The mobile station of claim 29 , wherein said radio frequency signal processing unit comprises a power control apparatus configured to receive a power control command over a forward link channel and configured to respond thereto by increasing or decreasing a power level at which said mobile station transmits said message portion.
Claim 37
Dependent Claim
34 words
The mobile station of claim 32 , wherein said radio frequency signal processing unit is further configured to receive said power control command from a plurality of sectors associated with a single base station.
Claim 38
Dependent Claim
29 words
The mobile station of claim 32 , wherein said radio frequency signal processing unit is further configured to receive said power control command from a plurality of base stations.
Claim 39
Independent Claim
95 words
A method of system access, comprising the steps of: receiving a request portion of an access probe over a first forward link common control channel selected from among a set of random access channels which provide communication subject to contention, said request portion comprising an identification which quasi-uniquely identifies a mobile station; transmitting a channel assignment message designating said identification and a reserved access channel, said reserved access channel providing communication with a low probability of contention; and receiving a message portion of said access probe over said reserved access channel from said mobile station.
Claim 40
Independent Claim
95 words
A method of system access, comprising the steps of: receiving a request portion of an access probe over a first forward link common control channel selected from among a set of random access channels which provide communication subject to contention, said request portion comprising an identification which quasi-uniquely identifies a mobile station; transmitting a channel assignment message designating said identification and a reserved access channel, said reserved access channel providing communication with a low probability of contention; and receiving a message portion of said access probe over said reserved access channel from said mobile station.
Claim 41
Dependent Claim
26 words
The method of claim 35 , wherein said step of receiving said message portion is performed by a plurality of sectors associated with a base station.
Claim 42
Dependent Claim
28 words
The method of claim 35 , wherein said channel assignment message specifies a wait period to be observed before said step of receiving said message portion is executed.
Claim 43
Dependent Claim
53 words
The method of claim 35 , further comprising the step of determining a power correction amount based upon a signal quality level at which said request portion is received and wherein said channel assignment message specifies said power control correction amount to be used by said mobile station to transmit said message portion.
Claim 44
Dependent Claim
42 words
The method of claim 35 , further comprising the step of transmitting a power control command over a forward link channel based upon a signal quality level at which said message portion is received during said step of receiving said message portion.
Claim 45
Dependent Claim
45 words
The method of claim 39 , further comprising the step of transmitting a power control command through a plurality of sectors associated with said base station, said transmitting step being performed in response to a signal quality level at which said message portion is received.
Claim 46
Independent Claim
99 words
An apparatus for obtaining system access, comprising: means for receiving a request portion of an access probe over a first forward link common control channel selected from among a set of random access channels which provide communication subject to contention, said request portion comprising an identification which quasi-uniquely identifies a mobile station; means for transmitting a channel assignment message designating said identification and a reserved access channel, said reserved access channel providing communication with a low probability of contention; and means for receiving a message portion of said access probe over said reserved access channel from said mobile station.
Claim 47
Independent Claim
99 words
An apparatus for obtaining system access, comprising: means for receiving a request portion of an access probe over a first forward link common control channel selected from among a set of random access channels which provide communication subject to contention, said request portion comprising an identification which quasi-uniquely identifies a mobile station; means for transmitting a channel assignment message designating said identification and a reserved access channel, said reserved access channel providing communication with a low probability of contention; and means for receiving a message portion of said access probe over said reserved access channel from said mobile station.
Claim 48
Dependent Claim
31 words
The apparatus of claim 41 , wherein said means for receiving said message portion comprises means for receiving said message portion through a plurality of sectors associated with a base station.
Claim 49
Dependent Claim
54 words
The apparatus of claim 41 , further comprising means for determining a power correction amount based upon a signal quality level at which said request portion is received and wherein said channel assignment message specifies an amount of said power control correction to be used by said mobile station to transmit said message portion.
Claim 50
Dependent Claim
37 words
The apparatus of claim 41 , further comprising means for transmitting a power control command to said mobile station over a forward link channel based upon a signal quality level at which said message portion is received.
Claim 51
Dependent Claim
42 words
The apparatus of claim 41 , further comprising means for transmitting a power control command to said mobile station through a plurality of sectors associated with a base station based upon a signal quality level at which said message portion is received.
Claim 52
Dependent Claim
109 words
A base station, comprising: a signal processing unit configured to receive a request portion of an access probe over a first forward link common control channel selected from among a set of random access channels providing communication subject to contention, said request portion comprising an identification which quasi-uniquely identifies a mobile station; and a signal generation unit configured to transmit a channel assignment message designating said identification and designating a reserved access channel, said reserved access channel providing communication with a low probability of contention; said signal processing unit further configured to receive a message portion of said access probe over a reserved access channel from said mobile station.
Claim 53
Dependent Claim
109 words
A base station, comprising: a signal processing unit configured to receive a request portion of an access probe over a first forward link common control channel selected from among a set of random access channels providing communication subject to contention, said request portion comprising an identification which quasi-uniquely identifies a mobile station; and a signal generation unit configured to transmit a channel assignment message designating said identification and designating a reserved access channel, said reserved access channel providing communication with a low probability of contention; said signal processing unit further configured to receive a message portion of said access probe over a reserved access channel from said mobile station.
Claim 54
Dependent Claim
49 words
The base station of claim 46 , further comprising a plurality of demodulators associated with a plurality of sectors within said base station, said demodulator being each coupled to said signal processing unit, and wherein said message portion is received through more than one of said plurality of demodulators.
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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) | 2004-07-02 | 2005-01-01 | 2005-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-07-02 | 2009-01-01 | 2009-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-07-02 | 2013-01-01 | 2013-07-03 | $7700.00 | Window Closed / Lapsed |