US5832382A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optimized routing of mobile calls within a telecommunications network
Assignee: Ericsson Inc
•
Filing: 1996-09-16
•
Granted: 1998-11-03
•
Expires: 2016-09-16
Abstract
Abstract After an initial call connection towards a called party mobile station, an originating exchange serving the calling party terminal receives an indication over the connected telecommunications network that the entered called party number is associated with a mobile station. Thereinafter, the serving originating exchange interrogates the HLR directly to determine the mobile switching center (MSC) currently serving the called party mobile station for subsequent outgoing call connection requests towards the called party terminal. After retrieving the roaming number representing the serving MSC for the called party mobile station, a direct call connection is established between the originating exchange and the MSC currently serving the calling party mobile station without establishing a trunk call connection back to the home Public Land Mobile Network (PLMN) associated with the calling party mobile station.
Inventors
- 👤 Vladimir Alperovich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:32
CPC Classifications
H; H04; H04W; H04W76/00; H04W76/10; H04W8/00; H04W8/02; H04W8/08; H04W8/12
Claims Analysis
Total Claims: 39
Claim 1
Independent Claim
172 words
A method for optimally establishing a call connection to a mobile station within a telecommunications network, said method comprising the steps of: establishing a first connection from a first telecommunications node serving a calling party mobile station to a called party terminal associated with a dialed called party number; in response to said first connection, receiving a first indication at said first telecommunications node that said called party number is a mobile number; informing said calling party mobile station that said dialed called party number is a mobile number; receiving a request from said calling party mobile station at a second telecommunications node currently serving said calling party mobile station to establish a call connection towards said called party terminal, said request further including a second indication indicating that said called party terminal is a mobile station; communicating with a home mobile telecommunications network associated with said called party terminal to receive a routing instruction; and establishing said second call connection with said called party terminal in accordance with said routing instruction.
Claim 2
Independent Claim
172 words
A method for optimally establishing a call connection to a mobile station within a telecommunications network, said method comprising the steps of: establishing a first connection from a first telecommunications node serving a calling party mobile station to a called party terminal associated with a dialed called party number; in response to said first connection, receiving a first indication at said first telecommunications node that said called party number is a mobile number; informing said calling party mobile station that said dialed called party number is a mobile number; receiving a request from said calling party mobile station at a second telecommunications node currently serving said calling party mobile station to establish a call connection towards said called party terminal, said request further including a second indication indicating that said called party terminal is a mobile station; communicating with a home mobile telecommunications network associated with said called party terminal to receive a routing instruction; and establishing said second call connection with said called party terminal in accordance with said routing instruction.
Claim 3
Dependent Claim
23 words
The method of claim 1 wherein said first and second telecommunications nodes are mobile switching centers (MSCs) serving said calling party mobile station.
Claim 4
Dependent Claim
15 words
The method of claim 2 wherein said first and second MSCs are the same MSC.
Claim 5
Dependent Claim
23 words
The method of claim 1 wherein said first indication comprises an Integrated Service Digital Network User Part (ISUP) based Call Progress (CPG) signal.
Claim 6
Dependent Claim
23 words
The method of claim 1 wherein said first indication further comprises data indicating the mobile telecommunications system associated with the called party number.
Claim 7
Dependent Claim
38 words
The method of claim 1 wherein said step of informing said calling party mobile station further comprises the step of storing data at said calling party mobile station indicating that said called party terminal is a mobile station.
Claim 8
Dependent Claim
23 words
The method of claim 1 wherein said second indication comprises a service code indicating that said called party terminal is a mobile station.
Claim 9
Dependent Claim
55 words
The method of claim 1 wherein said step of communicating with said home telecommunications network further comprises the step of performing interrogation with a home location register (HLR) associated with said called party terminal and wherein said routing instruction comprises a roaming number representing a mobile switching center (MSC) currently serving said called party terminal.
Claim 10
Dependent Claim
29 words
The method of claim 8 wherein said step of performing interrogation with said HLR is performed by a gateway mobile switching center (GMSC) associated with said first telecommunications node.
Claim 11
Independent Claim
155 words
A method for optimally establishing a call connection to a mobile station within a telecommunications network, said method comprising the steps of: establishing a first connection from a telecommunications node serving a calling party terminal to a called party terminal associated with a dialed called party number; in response to said first connection, receiving a first indication at said telecommunications node that said called party number is a mobile number; storing data at said telecommunications node indicating that said called party number is a mobile number; receiving a request from said calling party terminal to originate a second call connection towards said called party number; determining that said called party number is a mobile number by evaluating said stored data; communicating with a home mobile telecommunications network associated with said called party terminal to receive a routing instruction; and establishing said second call connection with said called party terminal in accordance with said routing instruction.
Claim 12
Independent Claim
155 words
A method for optimally establishing a call connection to a mobile station within a telecommunications network, said method comprising the steps of: establishing a first connection from a telecommunications node serving a calling party terminal to a called party terminal associated with a dialed called party number; in response to said first connection, receiving a first indication at said telecommunications node that said called party number is a mobile number; storing data at said telecommunications node indicating that said called party number is a mobile number; receiving a request from said calling party terminal to originate a second call connection towards said called party number; determining that said called party number is a mobile number by evaluating said stored data; communicating with a home mobile telecommunications network associated with said called party terminal to receive a routing instruction; and establishing said second call connection with said called party terminal in accordance with said routing instruction.
Claim 13
Dependent Claim
14 words
The method of claim 10 wherein said telecommunications node comprises a wireline local exchange.
Claim 14
Dependent Claim
23 words
The method of claim 10 wherein said first indication comprises an Integrated Service Digital Network User Part (ISUP) based Call Progress (CPG) signal.
Claim 15
Dependent Claim
23 words
The method of claim 10 wherein said first indication further comprises data indicating the mobile telecommunications standard associated with the called party number.
Claim 16
Dependent Claim
55 words
The method of claim 10 wherein said step of communicating with said home telecommunications network further comprises the step of performing interrogation with a home location register (HLR) associated with said called party terminal and wherein said routing instruction comprises a roaming number representing a mobile switching center (MSC) currently serving said called party terminal.
Claim 17
Dependent Claim
28 words
The method of claim 14 wherein said step of performing interrogation with said HLR is performed by a gateway mobile switching center (GMSC) associated with said telecommunications node.
Claim 18
Independent Claim
163 words
A method for establishing a call connection towards a mobile station within a telecommunications network, said method comprising the steps of: transmitting a first request from a mobile station to a first serving mobile switching center (MSC) to establish a first call connection with a particular called party number; receiving a first indication from said serving mobile switching center that said called party number is associated with a mobile station; storing data indicating that said called party number is a mobile number at said mobile station; and receiving a request from a subscriber associated with said mobile station to originate a call connection towards said called party number; retrieving said stored data for said called party number; and transmitting a second request from said mobile station to a second MSC current serving said mobile station to establish a second call connection with said called party number, said second request further including a second indication that said called party number is a mobile number.
Claim 19
Independent Claim
163 words
A method for establishing a call connection towards a mobile station within a telecommunications network, said method comprising the steps of: transmitting a first request from a mobile station to a first serving mobile switching center (MSC) to establish a first call connection with a particular called party number; receiving a first indication from said serving mobile switching center that said called party number is associated with a mobile station; storing data indicating that said called party number is a mobile number at said mobile station; and receiving a request from a subscriber associated with said mobile station to originate a call connection towards said called party number; retrieving said stored data for said called party number; and transmitting a second request from said mobile station to a second MSC current serving said mobile station to establish a second call connection with said called party number, said second request further including a second indication that said called party number is a mobile number.
Claim 20
Dependent Claim
16 words
The method of claim 16 wherein said first MSC and said second MSC are the same.
Claim 21
Dependent Claim
23 words
The method of claim 16 wherein said indication received from said first MSC comprises a Direct Transfer Application Part (DTAP) based progress signal.
Claim 22
Dependent Claim
23 words
The method of claim 16 wherein said second indication comprises a service code representing that said called party number is a mobile number.
Claim 23
Dependent Claim
23 words
The method of claim 16 wherein said first indication further comprises data specifying the mobile telecommunications standard associated with said called party number.
Claim 24
Independent Claim
82 words
A system for determining that a called party terminal is a mobile station, said system comprising: means for establishing a first connection from a telecommunications node serving a calling party terminal to a called party terminal associated with a dialed called party number; means, in response to said first connection, for receiving an indication at said telecommunications node that said called party number is a mobile number; and means for storing data indicating that said called party number is a mobile number.
Claim 25
Independent Claim
82 words
A system for determining that a called party terminal is a mobile station, said system comprising: means for establishing a first connection from a telecommunications node serving a calling party terminal to a called party terminal associated with a dialed called party number; means, in response to said first connection, for receiving an indication at said telecommunications node that said called party number is a mobile number; and means for storing data indicating that said called party number is a mobile number.
Claim 26
Dependent Claim
33 words
The system of claim 21 wherein said calling party terminal comprises a calling party mobile station and wherein said telecommunications node comprises a mobile switching center (MSC) serving said calling party mobile station.
Claim 27
Dependent Claim
53 words
The system of claim 22 wherein said means for storing said data further comprises: means for informing said calling party mobile station that said called party terminal is a mobile station; and means for storing said data at said calling party mobile station indicating that said called party terminal is a mobile station.
Claim 28
Dependent Claim
24 words
The system of claim 23 wherein said means for informing said calling party mobile station comprises a Direct Transfer Application Part (DTAP) based signal.
Claim 29
Dependent Claim
29 words
The system of claim 21 wherein said calling party terminal comprises a wireline terminal and wherein said telecommunications node comprises a wireline local exchange serving said calling party terminal.
Claim 30
Dependent Claim
34 words
The system of claim 25 wherein said means for storing said data further comprises means for storing said data at said wireline local exchange indicating that said called party terminal is a mobile station.
Claim 31
Dependent Claim
22 words
The system of claim 21 wherein said indication comprises an Integrated Service Digital Network User Part (ISUP) based call progress (CPG) signal.
Claim 32
Independent Claim
83 words
A method for determining that a called party terminal is a mobile station within a telecommunications network, said method comprising the steps of: establishing a first connection from a telecommunications node serving a calling party terminal to a called party terminal associated with a dialed called party number; in response to said first connection, receiving an indication at said telecommunications node that said called party number is a mobile number; and storing data indicating that said called party number is a mobile number.
Claim 33
Independent Claim
83 words
A method for determining that a called party terminal is a mobile station within a telecommunications network, said method comprising the steps of: establishing a first connection from a telecommunications node serving a calling party terminal to a called party terminal associated with a dialed called party number; in response to said first connection, receiving an indication at said telecommunications node that said called party number is a mobile number; and storing data indicating that said called party number is a mobile number.
Claim 34
Dependent Claim
33 words
The method of claim 28 wherein said calling party terminal comprises a calling party mobile station and wherein said telecommunications node comprises a mobile switching center (MSC) serving said calling party mobile station.
Claim 35
Dependent Claim
51 words
The method of claim 29 wherein said step of storing said data further comprises the step of: informing said calling party mobile station that said called party terminal is a mobile station; and storing said data at said calling party mobile station that said called party terminal is a mobile station.
Claim 36
Dependent Claim
34 words
The method of claim 30 wherein said step of informing said calling party mobile station comprises the step of communicating a Direct Transfer Application Part (DTAP) based signal to said calling party mobile station.
Claim 37
Dependent Claim
29 words
The method of claim 28 wherein said calling party terminal comprises a wireline terminal and wherein said telecommunications node comprises a wireline local exchange serving said calling party terminal.
Claim 38
Dependent Claim
35 words
The method of claim 32 wherein said step of storing said data further comprises the step of storing said data at said wireline local exchange indicating that said called party terminal is a mobile station.
Claim 39
Dependent Claim
22 words
The method of claim 28 wherein said indication comprises an Integrated Service Digital Network User Part (ISUP) based call progress (CPG) signal.
References Cited (Backward Citations)
US4833701A
Cited
US4901340A
Cited
US5353340A
Cited
US5153902A
Cited
US5018187A
Cited
US5345498A
Cited
US5440614A
Cited
US5210787A
Cited
US5506888A
Cited
US5400390A
Cited
US5454027A
Cited
US5761620A
Cited
US5423068A
Cited
US5432841A
Cited
WO1994005129A1
Cited
US5467381A
Cited
US5619552A
Cited
WO1995009514A1
Cited
US5325362A
Cited
US5504804A
Cited
US5526400A
Cited
US5497412A
Cited
WO1995033326A2
Cited
US5533026A
Cited
US5745852A
Cited
US5724658A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-11-02 | 2002-05-04 | 2002-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-11-02 | 2006-05-04 | 2006-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-11-02 | 2010-05-04 | 2010-11-03 | $7700.00 | Window Closed / Lapsed |