WO1992017986A2 - Switching arrangement for public switched telephone and public radio mobile networks - Google Patents
Switching arrangement for public switched telephone and public radio mobile networks Download PDFInfo
- Publication number
- WO1992017986A2 WO1992017986A2 PCT/GB1992/000599 GB9200599W WO9217986A2 WO 1992017986 A2 WO1992017986 A2 WO 1992017986A2 GB 9200599 W GB9200599 W GB 9200599W WO 9217986 A2 WO9217986 A2 WO 9217986A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- public
- switched telephone
- network
- public switched
- digital main
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/16—Gateway arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
- H04Q11/0428—Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals
- H04Q11/0435—Details
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/0016—Arrangements providing connection between exchanges
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/042—Public Land Mobile systems, e.g. cellular systems
Definitions
- the present invention relates to Public Communications Networks (PCNs). These networks provide a mobile communications service to a user carrying a low-powered handset called a Mobile Station (MS).
- PCNs Public Communications Networks
- MS Mobile Station
- a public switched telephone network comprising a plurality of digital main switching units each including a gateway mobile switching centre for a public communications network.
- Each digital main switching unit is connectable to at least one mobile switching centre of a public communications network.
- a digital main switching unit for a public switched telephone network including a gateway mobile switching centre for a public communications network.
- FIG 1 shows a typical Public Communications Network interfaced to a Public Switched Telephone Network (PSTN);
- PSTN Public Switched Telephone Network
- FIG. 2 shows a Public Communication Network interfaced to a Public Switched Telephone Network in accordance with the present invention.
- the PCN comprises a number of Base Station Systems (BSSs) limited to Mobile Switching Centres (MSCs). Each MSC has an associated Visited Location Register (VLR).
- VLR Visited Location Register
- a VLR contains information about PCN registered users who have been identified as being within the geographical area served by one of the BSS connected to the associated MSC. It is necessary for the user's Mobile Station (MS) to be switched "on" for the identification to take place.
- MS Mobile Station
- One or more MSCs in a PCN are interfaced to the PSTN via a Gateway Mobile Switching Centre connected to Digital Main Switching Unit (DMSU) otherwise known as a Trunk Exchange.
- DMSU Digital Main Switching Unit
- the functionality and interfaces of the GMSC are defined by the European standards body Groupe Speciale Mobile (GSM).
- each PCN has a Home Location Register (HLR), which contains information about all registered users of the PCN, including their current location if known, obtained from the VLRs. This location information will identify the MSC serving the user's current location.
- HLR Home Location Register
- a PSTN user making a telephone call to a PCN registered user will dial the Mobile Subscriber Integrated Services Digital Network (MSISDN) number of that user.
- MSISDN Mobile Subscriber Integrated Services Digital Network
- the call is routed via a Local Exchange (LE) to the DMSU.
- LE Local Exchange
- the DMSU From routing tables located in the DMSU it can be determined that the call is destined for a registered user of the PCN.
- the DMSU interrogates the HLR with a Send Routing Information (SRI) request.
- SRI Send Routing Information
- the HLR responds with a current Roaming Number (RN) for the called user or an indication that there is no current location information for the user (i.e. the user is not within range of a BSS or that the MS is switched Off).
- RN current Roaming Number
- the RN is used by the interrogating DMSU to determine which GMSC and MSC serve the called user's current location.
- the call is then routed through the PSTN trunk network to the DMSU and GMSC which serve the called user's MSC.
- the PSTN operator provides the trunk network for the PCN operator, who avoids the large capital investment to set up its own separate trunk network.
- FIG. 2 there is shown an arrangement where the functionality of the PSTN DMSU and the PCN GMSC are combined in one physical unit, DMSU/GMSC, within the PSTN network.
- the PCN operator does not need to install its own GMSCs, and the functionality is provided by the PSTN operator on selected DMSUs. While the invention has been described with particular reference to certain embodiments, neither the illustrated embodiment nor the terminology employed in describing them is intended to define the invention, which is intended to be limited only by- the scope of the appended claims.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP92507170A JPH05507838A (en) | 1991-04-03 | 1992-04-03 | PSTN/PCN switching equipment |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9106982A GB2254521A (en) | 1991-04-03 | 1991-04-03 | Pstn/pcn switching arrangement |
GB9106982.3 | 1991-04-03 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO1992017986A2 true WO1992017986A2 (en) | 1992-10-15 |
WO1992017986A3 WO1992017986A3 (en) | 1992-11-26 |
Family
ID=10692586
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB1992/000599 WO1992017986A2 (en) | 1991-04-03 | 1992-04-03 | Switching arrangement for public switched telephone and public radio mobile networks |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0532726A1 (en) |
JP (1) | JPH05507838A (en) |
AU (1) | AU1469592A (en) |
GB (1) | GB2254521A (en) |
WO (1) | WO1992017986A2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5901359A (en) * | 1997-01-03 | 1999-05-04 | U S West, Inc. | System and method for a wireline-wireless network interface |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5307400A (en) * | 1991-11-25 | 1994-04-26 | Telefonaktiebolaget L M. Ericsson | Call routing in mobile telephone systems |
SE500197C2 (en) * | 1992-08-18 | 1994-05-02 | Ericsson Telefon Ab L M | Communication network, method of establishing a connection and registration method in such a network |
DE4335031A1 (en) * | 1993-10-14 | 1995-04-20 | Sel Alcatel Ag | Mobile network and conference service facility therefor |
DE4427072C1 (en) * | 1994-08-01 | 1996-02-22 | Deutsche Telekom Mobil | Call forwarding appts. for relaying call from first communication network to second remote group telephone system (GSM) |
KR0161156B1 (en) * | 1995-12-21 | 1998-12-01 | 유기범 | Method for selecting routing network on switching call with mobile subscriber |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0367007A1 (en) * | 1988-10-21 | 1990-05-09 | Alcatel Cit | Switching centre for mobile radio application |
-
1991
- 1991-04-03 GB GB9106982A patent/GB2254521A/en not_active Withdrawn
-
1992
- 1992-04-03 WO PCT/GB1992/000599 patent/WO1992017986A2/en not_active Application Discontinuation
- 1992-04-03 EP EP19920907403 patent/EP0532726A1/en not_active Withdrawn
- 1992-04-03 AU AU14695/92A patent/AU1469592A/en not_active Abandoned
- 1992-04-03 JP JP92507170A patent/JPH05507838A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0367007A1 (en) * | 1988-10-21 | 1990-05-09 | Alcatel Cit | Switching centre for mobile radio application |
Non-Patent Citations (2)
Title |
---|
ELECTRICAL COMMUNICATION, Vol. 63, No. 4, 1989, Romford, (GB), pages 400-408, XP115659, W. WEISS et al., "System 900: The ISDN Approach to Cellular Mobile Radio". * |
PROCEEDINGS OF THE INTERNATIONAL SWITCHING SYMPOSIUM, 7 May 1984, Florence, (IT), pages 32B-P6-1 - 32B-P6-4, J. HOOGEVEEN, "Control of Mobile Services", pages 3, 4. * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5901359A (en) * | 1997-01-03 | 1999-05-04 | U S West, Inc. | System and method for a wireline-wireless network interface |
Also Published As
Publication number | Publication date |
---|---|
WO1992017986A3 (en) | 1992-11-26 |
AU1469592A (en) | 1992-11-02 |
EP0532726A1 (en) | 1993-03-24 |
JPH05507838A (en) | 1993-11-04 |
GB2254521A (en) | 1992-10-07 |
GB9106982D0 (en) | 1991-05-22 |
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