Abstract: The present invention proposes a transmission method for transmitting data in a telecommunication network (NW), said telecommunication network comprising at least one access network (RAN) adapted to transmit data to/from at least one terminal device (MS) and a core network (CN, MSC, GW/TC), which are connected to each other via a first interface (Iu), wherein said data are exchanged via said first interface (Iu) using a real-time transfer protocol (RTP). Preferably, said real-time transfer protocol complies with ITU-T H.225 and ITU-T H.323 Recommendations. Consequently, transmission resources available on said first interface can be effectively and economically used, since the RTP protocol conforming to ITU-T H.323 Recommendation is adapted to handle discontinuous transmission.

Abstract: The present invention proposes a method for performing a detach of a terminal (MS) registered to a telecommunication network (NW) by associating an identification (TMSI) for said terminal (MS), deriving a signature (TMSI_SIG) for said identification (TMSI), and allocating a pair consisting of said identification (TMSI) and said signature (TMSI_SIG) to said terminal (MS), said method comprising the steps of: sending a detach request (DET_REQ) including said identification (TMSI) and said identification signature (TMSI_SIG) from said registered terminal (MS) to said network (NW); receiving said detach request (DET_REQ) at the network (NW) side; comparing said received detach request (DET_REQ) with a record of registration data of said terminal (MS) kept at the network side; and detaching said terminal (MS) from said network (NW), if said received detach request (DET_REQ) coincides with said record of registration data.

Abstract: A method and apparatus are provided for communicating information. This may include comparing a current item list with a reference item list and determining a type of classification based on the comparison. That is, the comparison may determine a difference between the current item list and the reference item list. Information regarding this difference may be sent from a first entity to a second entity.

Abstract: An arrangement for providing IP mobility for a mobile station (MS) provides a care-of-address (COA) for routing data packets when the MS is away from home. In one embodiment, the arrangement includes support nodes, called gateway GPRS support nodes (GGSN) or serving GPRS gateway support nodes (SGSN), and a foreign agent (FA) having an IP address. In order to save IP addresses and radio resources, the FA is integrated into one of the support nodes (e.g., the SGSN), and the IP address of, or an IP address provided by the FA is also used as the MS COA.

Abstract: An emergency telephone call is supported and routed to a Public Safety Answering Point (PSAP) in an IP based packet switched wireless communications network. An activate PDP context request is sent from a user equipment to the network. A parameter in said activate PDP context request indicates that the PDP context will be used to transfer an emergency call. An activate PDP context accept message is returned from said support node to said user equipment. Said activate PDP context accept message acknowledges said activate PDP context request message and provides the address of a call state control function. A call setup request transferred to the call state control function includes the Service Area Identity (SAI). The call state control function selects a PSAP based, at least in part, on the SAI included in the call setup request and forwards the emergency call to the selected PSAP.

Abstract: The invention relates to mobility management of an Internet-type protocol traffic in a mobile communications system. At least one mobile exchange (DXT1, DXT2) in the mobile communications system is arranged to operate as a gateway which interfaces (router 1) the mobile communications system with external data networks. All the mobile exchanges (DXT1, DXT2) are arranged to use a user identity and a data equipment identity for identifying each mobile host and to use an identity of the mobile exchange currently serving the mobile host for defining the location of the mobile host. Each mobile host is dynamically or permanently allocated an IP address which is bound to the user identity, the data equipment identity and the location information of the respective mobile host. The use of the user identity and the data terminal identity provide a unique identification for the mobile host without any relation to the IP network. Also the location information is independent of the IP network.

Abstract: The invention relates to controlling selection of a gateway support node of a packet-switched network. The invention includes defining at least one condition for the gateway support node. When the condition is fulfilled, another gateway support node is more suitable for transmitting packets. When fulfillment of the condition is detected, a first message indicating the other gateway support node is transmitted to the serving support node.

Abstract: A system and method for establishing protection routes in optical mesh networks. A protection protocol is provided that utilizes a destination-to-source communication channel to establish a source-to-destination protection route. The communication channel is established from the node detecting the failed link back towards the transmitting node. As the destination-to-source communication channel is being established back towards the source node, it concurrently directs the nodes along this path to perform switching functions to subsequently allow the information originally intended for transmission via the failed link to be switched to the alternate protection path. Various manners of ascertaining the protection routes are also provided, including predetermined and/or dynamically-generated protection paths established via the destination-to-source communication channel.

Abstract: A communication system comprises an IP network offering services to users and an IPT provider network providing call related functions to users. A control protocol message is received and analyzed by a respective serving entity in the IPT provider network. Depending on the analyzing result, call related functions are performed by the respective serving entity. Moreover, a received control protocol message is analyzed by the IP network and, depending on the analyzing result, services are executed by the IP network.

Abstract: The invention relates to implementation of multiple simultaneous calls for a mobile station in a mobile communication system. A common traffic channel (TCH) is allocated to several simultaneous calls (applications 1–n) of the mobile station (MS), so that the calls share the capacity of the common channel. Logical links are established for each call inside a common radio link protocol or link access control protocol, which is established over the common traffic channel between the mobile station (MS) and an interworking function (IWF). The common traffic channel (TCH) is allocated when the first call or calls are set up, and the capacity of the traffic channel is adjusted dynamically during the calls. The capacity of the common traffic channel is increased or the allocated capacity is reallocated when a new call is added to the traffic channel. Correspondingly, the capacity is decreased or the allocated capacity is reallocated when a call is cleared from the common traffic channel.

Abstract: The invention relates to selection of the implementation of a service, and particularly to selection of the implementation of a supplementary service in a mobile communication system, in a situation where a user can use different terminals the properties of which vary. In the solution of the invention, at least two different implementations are defined for a service, the terminal requirements of which differ from each other. The implementation of the service is selected (307, 308, 309, 317, and 318) on the basis of the properties of the terminal used. Thus the implementation of the services is made as optimal and flexible as possible by implementing each service function at the most useful location considering the properties of the terminal and network.

Abstract: The invention relates to a method of allocating Abis interface transmission channels in a packet cellular radio network, and to a network part utilizing the method. The method comprises (502) allocating fixedly a certain number of transmission channels to base-station-specific operations and maintenance signalling and to transceiver-specific telecommunication signalling; and (504) allocating dynamically, using in-band signalling, a necessary number of transmission channels to packet data transfer, the amount of packet data varying according to the modulation and coding scheme used on a Um interface.

Abstract: A calculating method and a radio system comprising a set of emitters and a set of receivers and a measuring mechanism, which measure the time difference between the reception moments of signals transmitted by the transmitters while the receiver is receiving signals, and which calculate the geometrical time difference of the signals transmitted by the transmitters. The radio system includes a calculating mechanism, which forms the real time difference between the transmission moments of the signals transmitted by the transmitters as a function of time by of measuring the time difference of the signals transmitted by the transmitters as a function of time by of measuring the time difference of the signals received by the receiver and by of the geometrical time difference.

Abstract: A method of setting a timer associated with a protocol supportinga data link in a digital mobile communication system in a connection section. At least one party (MSC/IWF, MS) to the connectionsection monitors if the need to change the timer value has arisen. Should such a need be detected, the timer value (S) is set to avalue deviating from the initial value. The need to change the timer value (S) is also determined during the connection, such asin handover, for example by measuring the propagation delay associated with the connection section. This may be implemented by either of the parties to the connection transmitting to the other party a frame (F) which is selected/formed such that the party receiving the frame sends an acknowledgement (Ack) to the transmitting party. The party which transmitted the frame measures the timefrom the moment of transmission of the frame (F) to the arrival of the acknowledgement (Ack) and deduces the propagation delay (D) therefrom.

Abstract: A method and a GGSN support node for sending data packets to a mobile station in a mobile communications system from an external communication system. The GGSN receives data packets from the external communication system in a first plurality of data flows which it maps to a second plurality of data flows in the mobile communications system. It establishes at least one filter for controlling the mapping and associates the filter with the mobile station. It also maps at least one of the data flows on the basis of the filter and configures the filter on the basis of information which preferably originates from the mobile station.

Abstract: The present invention relates to monitoring and maintaining a network in telecommunications networks which comprise a large number of network elements. The network elements are presented as a hierarchical diagram or as a map display on a graphical user interface. In accordance with the invention, the graphical user interface presents performance information of the network element as a graphical presentation (41, 41A, 42, 42A, 43, 43A) in connection with the network element symbol in such a way that the operator can, at one glance, identify the network elements that are the most important in terms of the operation of the network or the network elements most affected by faults. In accordance with an embodiment of the invention, the alarm situation of each element is displayed as a graphical presentation (36) along with the network element symbol on the graphical user interface simultaneously with the graphical presentation representing the performance.

Abstract: A time-dependent hyperlink is associated with a video of a content server. The time dependent link is cross-referenced with coordinates and time that it appears in the video. A user may select the time-dependent hyperlink by selecting the hyperlink when is displayed by the video. The coordinates of the selection, including time, are used to determine the hyperlink that was selected. The browser being used can then be switched to a new session indicated by the hyperlink.

Abstract: A method and equipment for implementing call forwarding in a mobile system having at least one forwarding exchange and at least one subscriber database is provided so that routing of a forwarded call can be implemented. The forwarding exchange can receive a call addressed to a subscriber in the mobile system. A subscriber data request can be performed to a subscriber database connected to the forwarding exchange. A response message containing data the call forwarding and a forwarding number can be transmitted from the subscriber database to the forwarding exchange. Basic service data indicating basic service related to the call can be transmitted from the subscriber database to the forwarding exchange in connection with the response message. A basic service code is derived the service data and the call can be transferred to the forwarding number. The routing can be arranged according to the basic service code.

Abstract: A method includes receiving at least two space-time coded signals from an antenna system associated with a first station, determining complex channel state information based on the received space-time coded signals, and sending the complex channel state information to the first station. In an alternative embodiment, a method includes transmitting at least two space-time coded signals in respective beams of a multi-beam antenna array, measuring a channel impulse response for each space-time coded signal at a second station, and sending an indicia of a selected set of least attenuated signals from the second station to the first station. The multi-beam antenna array is associated with a first station. The beams transmit a signature code embedded in each respective space-time coded signal, and the signature codes are orthogonal so that the second station can separate and measure the channel impulse response corresponding to each space-time coded signal.

Abstract: The invention related to method for providing connection security for the transmission between communicating parties in a telecommunication network, the method comprising the steps of: exchanging security parameters between communicating parties, providing connection security for messages based on these security parameters, and transmitting said messages between communicating parties. It is characteristic for the method according to the invention that it further comprises the steps of: reaching agreement between communicating parties on an interval for recalculation of the security parameters, monitoring of the interval for recalculation by the communicating parties, recalculating the security parameters at the agreed interval, and providing connection security for messages based on the latest recalculated security parameters.