GB2254521A - Pstn/pcn switching arrangement - Google Patents
Pstn/pcn switching arrangement Download PDFInfo
- Publication number
- GB2254521A GB2254521A GB9106982A GB9106982A GB2254521A GB 2254521 A GB2254521 A GB 2254521A GB 9106982 A GB9106982 A GB 9106982A GB 9106982 A GB9106982 A GB 9106982A GB 2254521 A GB2254521 A GB 2254521A
- Authority
- GB
- United Kingdom
- Prior art keywords
- network
- pcn
- pstn
- public
- digital main
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
A public switched telephone network comprises a plurality of digital main switching units each including a gateway mobile switching centre for a public communications network. Also, a digital main switching unit for a public switched telephone network includes a gateway mobile switching centre for a public communications network.
Description
PSTN/PCN SWITCHING ARRANGEMENT
The present invention relates to Public Communications
Networks (PCNs). These networks provide a mobile communications service to a user carrying a low-powerd handset called a Mobile
Station (MS).
According to the present invention there is provided 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.
According to the present invention there is further provided a digital main switching unit for a public switched telephone network including a gateway mobile switching centre for a public communications network.
The present invention will now be described, by way of example, with reference to the accompanying drawings, in which:
Figure 1 shows a typical Public Communications Network interfaced to a Public Switched Telephone Network (PSTN);
Figure 2 shows a Public Communication Network interfaced to a Public Switched Telephone Network in accordance with the present invention.
Referring to Figure 1, which shows a known version of a
PCN/PSTN system, 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). 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.
One or more MSC's 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. The functionality and interfaces of the GMSC are defined by the European standards body
Groupe Speciale Mobile (GSM).
Additionally, 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.
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. The call is routed via a Local
Exchange (LE) to 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. 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').
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.
Consequently, 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.
Referring now to Figure 2, according to the present invention, 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. As a result the two logically separate networks share the same physical infrastructure. 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.
Claims (6)
1. 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.
2. A network, as claimed in Claim 1, wherein at least one of the digital main switching units includes a node connected to a home location register for interrogation thereof.
3. A network as claimed in Claim 1 or 2, wherein each digital main switching unit is connectable to at least one mobile switching centre of a public communications network.
4. A public switched telephone network, substantially as hereinbefore described, with reference to and as illustrated in,
Figure 2 of the accompanying drawings.
5. A digital main switching unit for a public switched telephone network including a gateway mobile switching centre for a public communications network.
6. A digital main switching unit as claimed in Claim 5 and sutstantially as hereinbefore described, with reference to and as illustrated in Figure 2 of the accompanying drawings.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9106982A GB2254521A (en) | 1991-04-03 | 1991-04-03 | Pstn/pcn switching arrangement |
AU14695/92A AU1469592A (en) | 1991-04-03 | 1992-04-03 | Pstn/pcn switching arrangement |
JP92507170A JPH05507838A (en) | 1991-04-03 | 1992-04-03 | PSTN/PCN switching equipment |
EP19920907403 EP0532726A1 (en) | 1991-04-03 | 1992-04-03 | Switching arrangement for public switched telephone and public radio mobile networks |
PCT/GB1992/000599 WO1992017986A2 (en) | 1991-04-03 | 1992-04-03 | Switching arrangement for public switched telephone and public radio mobile networks |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9106982A GB2254521A (en) | 1991-04-03 | 1991-04-03 | Pstn/pcn switching arrangement |
Publications (2)
Publication Number | Publication Date |
---|---|
GB9106982D0 GB9106982D0 (en) | 1991-05-22 |
GB2254521A true GB2254521A (en) | 1992-10-07 |
Family
ID=10692586
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9106982A Withdrawn GB2254521A (en) | 1991-04-03 | 1991-04-03 | Pstn/pcn switching arrangement |
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 (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2262203A (en) * | 1991-11-25 | 1993-06-09 | Ericsson Telefon Ab L M | Call routing in mobile telephone systems |
WO1994005129A1 (en) * | 1992-08-18 | 1994-03-03 | Telefonaktiebolaget Lm Ericsson | A communication network, method of establishing a connection, and apparatus and registration procedure in such a network |
EP0649266A2 (en) * | 1993-10-14 | 1995-04-19 | Alcatel SEL Aktiengesellschaft | Mobile radio network and conference arrangement 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) |
GB2308790A (en) * | 1995-12-21 | 1997-07-02 | Daewoo Telecom Ltd | Generating routing information in a mobile communication system |
Families Citing this family (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 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2638307B1 (en) * | 1988-10-21 | 1994-06-10 | Cit Alcatel | SWITCHING CENTER FOR RADIOMOBILE APPLICATION |
-
1991
- 1991-04-03 GB GB9106982A patent/GB2254521A/en not_active Withdrawn
-
1992
- 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
- 1992-04-03 WO PCT/GB1992/000599 patent/WO1992017986A2/en not_active Application Discontinuation
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2262203A (en) * | 1991-11-25 | 1993-06-09 | Ericsson Telefon Ab L M | Call routing in mobile telephone systems |
US5307400A (en) * | 1991-11-25 | 1994-04-26 | Telefonaktiebolaget L M. Ericsson | Call routing in mobile telephone systems |
GB2262203B (en) * | 1991-11-25 | 1995-08-09 | Ericsson Telefon Ab L M | Call routing in mobile telephone systems |
WO1994005129A1 (en) * | 1992-08-18 | 1994-03-03 | Telefonaktiebolaget Lm Ericsson | A communication network, method of establishing a connection, and apparatus and registration procedure in such a network |
EP0649266A2 (en) * | 1993-10-14 | 1995-04-19 | Alcatel SEL Aktiengesellschaft | Mobile radio network and conference arrangement therefor |
EP0649266A3 (en) * | 1993-10-14 | 1999-03-24 | Alcatel SEL Aktiengesellschaft | Mobile radio network and conference arrangement 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) |
GB2308790A (en) * | 1995-12-21 | 1997-07-02 | Daewoo Telecom Ltd | Generating routing information in a mobile communication system |
US5890065A (en) * | 1995-12-21 | 1999-03-30 | Daewoo Telecom, Ltd. | Routing information generation method for use in a mobile communications system |
GB2308790B (en) * | 1995-12-21 | 2001-09-05 | Daewoo Telecom Ltd | Routing information generation method for use in a mobile communications system |
Also Published As
Publication number | Publication date |
---|---|
EP0532726A1 (en) | 1993-03-24 |
AU1469592A (en) | 1992-11-02 |
GB9106982D0 (en) | 1991-05-22 |
WO1992017986A3 (en) | 1992-11-26 |
WO1992017986A2 (en) | 1992-10-15 |
JPH05507838A (en) | 1993-11-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |