Ericsson Gmbh

Telefonaktiebolaget Lm Ericsson (publ)

Ericason Inc.

Lee Davidson

Eric Lee Valentine

Heino Hameleers

Frank Hundscheidt

Vladimir Alperovich

David Boltz

Martin Reichelt

Nauman Shakil

Stefan Petersson

Shri Balachandran

Johan Sannero

Tore Martin Hagen

A system () and method for routing an emergency request message from an Internet user () to an emergency-call-answering center () consisting of Public Service Access Points (PSAPs). An emergency request message is transmitted to an IP network () which is received by an emergency call handling function (). The emergency call handling function () queries a database () and returns the physical location information associated with the IP address of the user (). The call is formatted into a format compatible with the emergency call answering center () and transmitted via the PSTN () to the PSAP () serving the correct emergency service zone for the user ().

Methods and system for routing emergency calls through the internet

Communication network and a corresponding method are disclosed for operating the communication network that has a packet switched protocol based cellular telephone network comprising a first layer for transferring signalling information assigned to a telephone call being processed by the communication network, a second layer for transferring payload information assigned to the telephone call and an interface for coupling the cellular telephone network to a further network, the interface comprising a signalling information exchange function between the cellular telephone network and the further network and a payload information exchange function between the cellular telephone network and the further network, the first layer and the second layer of the cellular telephone network being coupled to the interface, wherein the second layer of the cellular telephone network transfers the payload information of the telephone call to and from the interface on a direct route assigned to the telephone call within the second layer.

Basic architecture for packet switched protocol based GSM networks

The present invention provides a system, method and apparatus for providing multiple quality of service classes to subscribers in a network by determining a subscriber's quality of service information by using a database containing quality of service information for each subscriber that has subscribed to one of the multiple quality of service classes, and storing the subscriber's quality of service information in a visitor location register where the subscriber is currently registered.

Method, apparatus and system for providing multiple quality of service classes to subscribers in a network

A system and method for a terrestrial IP network for efficient transmissions within a satellite-terrestrial network. The terrestrial network of a satellite-terrestrial telecommunications system provides for IP signaling between satellite access nodes without the use of dedicated, circuit switched trunks therebetween. The terrestrial network configuration provides for mobile services switching center redundancy and load sharing, as well as direct packet routing between satellite access nodes. Alternatively, a signaling gateway may be interposed on dedicated satellite access node links for converting inter-satellite access node traffic into an IP signaling format for efficient utilization of the direct links.

Internet protocol network architecture for a global satellite system

A versatile network architecture ( ) utilizing functional distribution of location registers to provide subscriber roaming without requiring local profile copies is disclosed; comprising a core network ( ) having a mobility server ( ) communicatively interfaced ( ) with one or more external networks ( ) and a profile server ( ) storing subscriber records and communicatively interfaced ( ) with one or more external networks ( ), an access network ( ) having a plurality of access service infrastructures ( ) communicatively interfaced ( ) with the mobility server and each providing communication access within a particular area, and one or more subscriber units ( ) communicatively interfaced ( ) with the profile server and operating within one of the particular areas.

Versatile system for functional distribution of location registers

Provided is a system, method, and computer program for transmitting, across a mobile communication network, the occurrence of silence in a communication channel. The system generally comprises a first Media Gateway (MGW), which could be a transmission control node (first TCN), for executing a silence transmission algorithm, and a second MGW, such as a second transmission control node (second TCN), for executing a comfort noise generating algorithm. One method detects silence in a communications channel and then transmits a network silence indicator (SID). Another method receives the network SID and then produces a comfort noise. The computer program utilizes a query module for detecting a comfort noise production module in a destination MGW, and a network SID transmission module to send a network SID across a PLMN.

System and method for providing comfort noise in a mobile communication network

The present invention provides a system and method for reliably transferring Dual Tone Multiple Frequency (DTMF) signals originating at a MS through an IP based GSM network. In general, when a MS sends a DTMF request, it is processed in the IP network by a logical application module in a MSC, which, based on the disclosed processing, activates another logical application module in an appropriate gateway (for independent, remote, tone generation), and then the logical application module in the gateway directs the production of the DTMF signal towards the interworking or destination network.

System and method for supporting DTMF tone sending in an IP based GSM network

A system and method for providing dynamic demand based management of traffic channel allocation in a mobile communications network providing high-speed circuit-switched data services. Traffic channel allocation for the data services is controlled dynamically by an InterWorking Function (IWF) which monitors the status of the associated buffers. The need for additional radio resources and the under-utilization of current radio resources is automatically detected by the IWF which respectively responds by initiating new traffic channel assignments via the Mobile Services switching Center or requesting the Mobile Services switching center deallocate an appropriate portion of the allocated radio spectrum.

System and method for dynamic radio resource allocation for non-transparent high-speed circuit-switched data services

A telecommunications system and method is disclosed for providing a more accurate measurement of the cumulative path delay present in a call to enable switches to make an informed decision as to the routing method to use. In one embodiment, the Integrated Services Digital Network User Part (ISUP) satellite hop counter field is expanded to include three fields, one for each type of delay: geostationary satellite hops, mid-earth orbit satellite hops and low-earth orbit satellite hops. In an alternative embodiment, a cumulative delay value in milliseconds or centiseconds, instead of the number of satellite hops, can be included in the expanded ISUP satellite hop counter field.

System and method for modification of satellite hop counter to reflect orbit type

A telecommunications network architecture and method of providing failover operations between mobile switching centers (MSCs). A plurality of MSCs and at least one base station controller (BSC) are connected to an Internet Protocol (IP) network in which transmission paths and control paths are logically separated. The BSC reports to a primary MSC and includes an alternative MSC list identifying at least one backup MSC for the primary MSC. The BSC determines when the primary MSC has failed, and utilizes a control path in the IP network to notify the backup MSC that the BSC has switched its reporting to the backup MSC. The BSC also utilizes a transmission path in the IP network to send mobile station communications from the BSC to the backup MSC. Mobile station location updating requests are sent from the backup MSC to a home location register (HLR). The requests include a new element that informs the HLR that the backup MSC is now serving the mobile station due to a failure of the primary MSC. Subscriber information is then downloaded from the HLR to a visitor location register (VLR) in the backup MSC. Routing number requests are sent from the HLR to the backup MSC when an incoming call is received in the HLR for a mobile station which has been moved to the backup MSC.

Redundant mobile switching center (MSC) architecture for a radio telecommunications network

An Internet Protocol (IP)-based radio telecommunications network and method of providing data services to a mobile terminal. An Internet Protocol Shared Interworking Function (IP-SIWF) is implemented in the network, and is controlled from a Mobile Switching Center (MSC) utilizing the Media Gateway Control Protocol (MGCP) device control protocol. When a data call carrying a data payload is originated by a mobile terminal, the data call is transported utilizing radio access and radio link protocols to the IP-SIWF. The radio access and radio link protocols are terminated in the IP-SIWF, and the data payload is transported thereafter utilizing a real time protocol over a User Datagram Protocol (UDP) and an IP protocol layer.

Interworking function in an internet protocol (IP)-based radio telecommunications network

A wireless control system (,) for distributing electrical control signals to a plurality of controlled devices (,and,), including an electronic control unit (ECU) (,) adapted to communicate with one or more controlled devices (,and,) and an induction loop (,) coupled to the ECU (,) and adapted to provide a magnetic field within the range of the controlled devices (,and,). Each controlled device (,and,) includes an induction coil (,and,) tuned to couple signals modulated within the magnetic field of the induction loop (,). The controlled devices (,and,) may include a sensor (,) and may be adapted to send a status signal (,) to the ECU (,) via the induction loop (,).

Wireless induction loop control system

A method of sending a short message service (SMS) message to a mobile station operating within a Global System for Mobile Communications (GSM) radio telecommunications network which utilizes a satellite air interface link. A paging server is implemented in the network and interfaced with a mobile switching center/visitor location register (MSC/VLR) serving the mobile station. When a SMS service center receives a mobile-terminating SMS message, it sends the message to the paging server. The paging server stores a copy of the message and sends the message from the paging server to the MSC/VLR. The MSC/VLR makes a first attempt to deliver the message to the mobile station via the satellite air interface radio link. If the SMS service center times out before receiving an acknowledgment that the message was delivered, the service center sends the message to the paging server a second time. Upon receipt, the paging server determines whether the message received the second time has already been sent to the MSC/VLR. If so, the paging server discards the message received the second time. If the message received the second time is a new message, the paging server forwards the message to the MSC/VLR for delivery.

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McKinney, TX, United States of America

Lee Davidson