Patent US5943615A successfully refreshed from Google Patents.
US5943615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for providing authentication security in a wireless communication system
Assignee: Qualcomm Inc
•
Filing: 1997-01-15
•
Granted: 1999-08-24
•
Expires: 2017-01-15
Abstract
Abstract An apparatus for providing authentication of a mobile station in a wireless communication system. The present invention takes the number dialed by the mobile station user and computes the 24 bit number (AUTH -- DATA) for authentication in accordance with a hashing function that has the following characteristics. The hashing function takes as its input at least the entire dialed digit string contained in the request for service and the number of digits. In a preferred embodiment, the ordering of the digits affects the result, as well as, the values of the digits. The preferred embodiment of the hashing function also accepts some or all of the mobile station identifier data. The function provides as output a number of suitable size for input to a second calculation of an authentication signature, such as the 24 bits required for AUTH -- DATA. The output number is created in such a way that there is a minimum likelihood that other sets of dialed digits may create the same result.
Inventors
- 👤 Gregory G. Rose
- 👤 Roy F. Quick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:59
CPC Classifications
H; H04; H04L; H04L9/00; H04L9/32; H04L9/3236; H04L9/3239; H04W; H04W12/00; H04W12/06; H04W12/069; H04W12/12; H04W12/121; H04W12/122
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
88 words
In mobile communication system, a method for authenticating the identity of a mobile station, comprising the steps of: receiving a sequence of dialed digits entered by a mobile station user which identify a target communication unit; generating a first number derived from said sequence of dialed digits and the number of digits in said sequence of dialed digits; generating an authentication message in accordance with said first number; and transmitting said sequence of dialed digits and said authentication message from said mobile station to a remote base station.
Claim 2
Dependent Claim
88 words
In mobile communication system, a method for authenticating the identity of a mobile station, comprising the steps of: receiving a sequence of dialed digits entered by a mobile station user which identify a target communication unit; generating a first number derived from said sequence of dialed digits and the number of digits in said sequence of dialed digits; generating an authentication message in accordance with said first number; and transmitting said sequence of dialed digits and said authentication message from said mobile station to a remote base station.
Claim 3
Dependent Claim
77 words
The method of claim 1 further comprising the steps: receiving at said base station said sequence of dialed digits and said authentication message; generating a local version of said first number derived from said received sequence of dialed digits and the number of digits in said received sequence of dialed digits; generating a locally generated authentication message in accordance with said locally generated first number; and comparing said locally generated authentication message with said received authentication message.
Claim 4
Dependent Claim
32 words
The method of claim 2 wherein the step of generating a locally generated authentication message is performed in accordance with a set of mobile station identification parameters stored in said base station.
Claim 5
Dependent Claim
30 words
The method of claim 1 wherein the step of generating an authentication message is performed in accordance with a set of mobile station identification parameters stored in said mobile station.
Claim 6
Dependent Claim
31 words
The method of claim 1 wherein the step of generating said first number comprises setting part of said first number to said number of digits in said sequence of dialed digits.
Claim 7
Dependent Claim
87 words
In mobile station, a method for authenticating the identity of said mobile station, comprising the steps of: receiving a sequence of dialed digits entered by a mobile station user which identify a target communication unit; generating a first number derived from said sequence of dialed digits and the number of digits in said sequence of dialed digits; generating an authentication message in accordance with said first number; and transmitting said sequence of dialed digits and said authentication message from said mobile station to a remote base station.
Claim 8
Dependent Claim
87 words
In mobile station, a method for authenticating the identity of said mobile station, comprising the steps of: receiving a sequence of dialed digits entered by a mobile station user which identify a target communication unit; generating a first number derived from said sequence of dialed digits and the number of digits in said sequence of dialed digits; generating an authentication message in accordance with said first number; and transmitting said sequence of dialed digits and said authentication message from said mobile station to a remote base station.
Claim 9
Dependent Claim
30 words
The method of claim 6 wherein the step of generating an authentication message is performed in accordance with a set of mobile station identification parameters stored in said mobile station.
Claim 10
Dependent Claim
31 words
The method of claim 6 wherein the step of generating said first number comprises setting part of said first number to said number of digits in said sequence of dialed digits.
Claim 11
Dependent Claim
90 words
In base station, a method for authenticating the identity of a mobile station, comprising the steps of: receiving at said base station a sequence of dialed digits and an authentication message transmitted by said mobile station; generating a local version of said first number derived from said received sequence of dialed digits and the number of digits in said received sequence of dialed digits; generating a locally generated authentication message in accordance with said locally generated first number; and comparing said locally generated authentication message with said received authentication message.
Claim 12
Dependent Claim
90 words
In base station, a method for authenticating the identity of a mobile station, comprising the steps of: receiving at said base station a sequence of dialed digits and an authentication message transmitted by said mobile station; generating a local version of said first number derived from said received sequence of dialed digits and the number of digits in said received sequence of dialed digits; generating a locally generated authentication message in accordance with said locally generated first number; and comparing said locally generated authentication message with said received authentication message.
Claim 13
Dependent Claim
32 words
The method of claim 9 wherein the step of generating a locally generated authentication message is performed in accordance with a set of mobile station identification parameters stored in said base station.
Claim 14
Dependent Claim
40 words
The method of claim 9 wherein the step of generating said local version of said first number comprises setting part of said local version of said first number to said number of digits in said received sequence of dialed digits.
Claim 15
Dependent Claim
82 words
A mobile station comprising: means for receiving a sequence of dialed digits entered by a mobile station user which identify a target communication unit; means for generating a first number derived from said sequence of dialed digits and the number of digits in said sequence of dialed digits; means for generating an authentication message in accordance with said first number; and means for transmitting said sequence of dialed digits and said authentication message from said mobile station to a remote base station.
Claim 16
Dependent Claim
82 words
A mobile station comprising: means for receiving a sequence of dialed digits entered by a mobile station user which identify a target communication unit; means for generating a first number derived from said sequence of dialed digits and the number of digits in said sequence of dialed digits; means for generating an authentication message in accordance with said first number; and means for transmitting said sequence of dialed digits and said authentication message from said mobile station to a remote base station.
Claim 17
Dependent Claim
32 words
The mobile station of claim 12 further comprising: mobile station identification parameter means for providing identification parameters; and wherein said means for generating an authentication message is responsive to said identification parameters.
Claim 18
Dependent Claim
31 words
The mobile station of claim 12 wherein said means for generating a first number sets part of said first number to said number of digits in said sequence of dialed digits.
Claim 19
Dependent Claim
85 words
A base station comprising: means for receiving at said base station a sequence of dialed digits and an authentication message transmitted by said mobile station; means for generating a local version of said first number derived from said received sequence of dialed digits and the number of digits in said received sequence of dialed digits; means for generating a locally generated authentication message in accordance with said locally generated first number; and means for comparing said locally generated authentication message with said received authentication message.
Claim 20
Dependent Claim
85 words
A base station comprising: means for receiving at said base station a sequence of dialed digits and an authentication message transmitted by said mobile station; means for generating a local version of said first number derived from said received sequence of dialed digits and the number of digits in said received sequence of dialed digits; means for generating a locally generated authentication message in accordance with said locally generated first number; and means for comparing said locally generated authentication message with said received authentication message.
Claim 21
Dependent Claim
34 words
The method of claim 15 wherein means for generating said local version of said first number sets part of said first number to said number of digits in said received sequence of dialed digits.
References Cited (Backward Citations)
US5239294A
Cited
EP0447380B1
Cited
WO1992002103A1
Cited
US5572193A
Cited
US5153919A
Cited
US5455863A
Cited
US5689563A
Cited
US5457737A
Cited
US5655019A
Cited
US5615267A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-08-23 | 2003-02-22 | 2003-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-08-23 | 2007-02-22 | 2007-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-08-23 | 2011-02-22 | 2011-08-24 | $7700.00 | Window Closed / Lapsed |