Abstract: The application relates to charging of traffic from terminals and in particular of charging of traffic from GPRS mobile terminals which are roaming in a visited PLMN (not claimed). According to the applicant's acknowledged prior art, either the traffic passes the home PLMN or the Home Operator relies on the Visited Operator to generate the CDRs to be used by the Home Operator for billing. Whereas the first solution leads to tromboning and inefficient traffic routing, the second solution calls for a strong trust relationship between the Home and the Visited Operators. The present invention circumvents both problems in that the terminal generates a traffic counting information and sends it to the Visited Network. The Visited Network generates a traffic counting record comprising the traffic counting information from the terminal and traffic counting information from the Visited Network. The traffic counting record is subsequently sent to the Home Network.

Abstract: The invention involves uplink access management for user terminals (210, 220, 230, 240, 250, 260, 270) present in a same first cell (15) of a communication system (1) and participating in a communication session involving communication of user data on a common downlink channel to the terminals (210, 220, 230, 240, 250, 260, 270). When the terminals (210, 220, 230, 240, 250, 260, 270) want to respond to the user data transmission, they first have to request uplink access. According to the invention, at least one of the terminals (220, 230, 240) requests this uplink access using a request channel associated with a second (25, 35, 45) cell different from the current first cell (15). This reduces the risk of collision of uplink access requests on the request channel by distributing the requests over several cells (15, 25, 35, 45) instead of a single cell (15).

Abstract: A method of controlling the allocation of transmission resources to wireless terminals within a radio access network, which resources are required for the provision of an IP Multimedia service to the terminals. The method comprises, in the event of a requirement to change the allocation of transmission resources to a given wireless terminal, sending a resource allocation request from a control node of the IP Multimedia Subsystem to the radio access network, the request causing a resource control node of the radio access network to change the allocation of access network resources to the wireless terminal.

Abstract: The present invention relates to an arrangement for controlling communication of data packets through one or more communication networks or network domains. It comprises means for identifying real-time or non-bursty data packet traffic, for separating real-time data packet traffic from bursty data packet traffic, for controlling the admission of real-time data packets and it further comprises or communicates with means for keeping information about the amount of real-time data packet flows that is admissible and for keeping information about current number of admitted and/or non-admitted real-time data packet flows. Means are also provided for establishing whether a packet or packets of a real-time data packet flow is/are admitted or not, such that generally all packets of a real-time IP data packet flow either can be admitted or rejected.

Abstract: An interworking module and method are described herein which allows information to be exchanged between a user terminal (e.g., mobile phone) and a communication bus which is installed within a vehicle. The communication bus is connected to different components (e.g., engine sensors, on-board diagnostic systems, video-audio equipment, heating-cooling equipment, stereo system, and seats) which are installed within the vehicle.

Abstract: Methods of establishing an IP link between first and second applications running at respective first and second nodes are provided. The first and second applications are arranged to initiate link establishment over a transport layer by issuing a call to their respective operating system socket Application Programming Interfaces. The methods include at said first node, intercepting a socket call generated by said first application and redirecting the socket call to a SIP-based application resident at said first node; and initiating an IP session with said second node using the SIP protocol.

Abstract: A method and a device in a communication apparatus for maintaining an established connection between said apparatus and a network node. The connection is established by a mobility management unit for providing a mobility management procedure. An acceptance message is issued by the node in response to a request relating to a first mobility management procedure. If any request relating to a second mobility management procedure issued by an upper layer is received by the mobility management unit after the request relating to the first procedure is transmitted and before the acceptance message is received, a maintaining request to maintain the connection is transmitted to the node in response to the acceptance message.

Abstract: Systems and methods for remotely evaluating antenna installations in a mobile radio communication system, wherein each antenna installation comprises at least one pair of antenna elements arranged for diversity reception. The received signal strength from a plurality of mobile stations is measured at the respective antenna elements of each pair of antenna elements; the signal strength values from each antenna element are compared for each pair of antenna elements; and, a plurality of comparison results are visually presented on a display as a function of both the comparison result and a parameter related to the position of each of the plurality of mobile stations relative to the location of the base station, whereby differences in reception characteristics between antenna elements of each pair can be detected and such pair can be identified for maintenance.

Abstract: The present invention relates to a method and an arrangement in a mobile telecommunication network for detection of a UE transmitted signal. The arrangement comprises means for detecting the signal during the time ttot, wherein said means comprises a correlator adapted for combined coherent and non-coherent correlation, wherein the length of the coherent correlation interval is L signal samples, the number of coherent correlation intervals is M and the coherent correlation results in a coherent correlation result for each of the coherent detection intervals M, and means for adding the coherent correlation results non-coherently. Further, the arrangement comprises means for selecting one of the length L of coherent detection interval and the total detection interval ttot based on at least one of the parameters cell size, UE speed and acceleration, number of participating Location Measurements Units and a desired total false alarm rate.

Abstract: The invention refers to a method for optimising the data communication in a network comprising a wireless radio network using connection oriented protocol (TCP) over internet protocol (IP). The network comprises a router (SGSN) intervening the connection oriented setup between a host (SERVER) and a client (MS), and changing the maximum segment size (MSS, ms) into a maximum segment size (MSS, sgsn) based on the router's (SGSN) knowledge about the radio network.

Abstract: The present invention relates to a method for controlling an amplifier unit having at least one drive signal input connection 1, at least one power supply voltage input connection 2 and an output connection 4. The amplifier unit comprises at least one amplifier, and the method comprises the steps of: feeding each amplifier by a drive signal from said at least one drive signal input connection 1, and feeding each amplifier by a power supply voltage from said at least one power supply voltage input connection, whereby said amplifier unit has defined output characteristics at the output connection 4 and a predetermined power supply voltage at a maximum RF output power for a RF signal. The method further comprises the steps of: operating at least one amplifier with RF output voltage characteristics to obtain a reduced shunt loss, compared to a reference shunt loss, at the output connection 4.

Abstract: A portable telecommunications system (PTS), and discovery and update protocol provides an ad-hoc system in which PTS systems can detect one another over a wide area network (WAN). The system may be compact in a way that allows mobility and rapid deployment with minimal on-site configuration. PTS systems exchange multicast packets and peer-to-peer data exchanges. A protocol manager sets up these communications channels, manages exchanges between PTS systems, and passes the data to or from internal system nodes. The protocol manager also performs key oversight functions such as signaling to other systems that a PTS is joining or leaving the community, keeping track of which other PTS systems are in the community and active, and determining when data needs to be updated and exchanged.

Abstract: The present invention relates to a communication system (SYS), a gateway apparatus (HiGA) and a method for allowing services of a first type provided by a communication server (IMS-S) to be provided to terminal devices (T1, T2, . . . Tn . . . TN) of a home network (CPN) independent of the fact whether the terminal devices are of a first type or a second type (IMS-based or non-IMS-based). The gateway apparatus (HiGA) comprises one or more service-specific mapping applications (AS) for adapting the control plane (SIP) used between the second type terminal devices (T2) to the control plane (HTTP) used between the gateway apparatus (HiGA) and the communication sever (IMS-S).

Abstract: The invention relates to a method of routing traffic from a sender to a receiver in a communication network said method comprising for at least two possible routes between the sender and the receiver the step of calculating at least one metric for at least one link in each route, characterized by the steps of calculating a sensitivity parameter for said at least one metric and taking said sensitivity parameter into account when selecting a route. The sensitivity parameter may be based on a derivative of said metric with respect to a variable on which said metric depends. The method may also comprise the step of calculating a reliability parameter for said at least one metric and taking said reliability parameter into account when selecting a route.

Abstract: A non-linear processing device (1) is presented, in which fractional-delay filtering (20)—fractional as compared with a sample rate used in the processing steps—is used between successive processing steps (10). A corresponding method is also presented. The fractional delay (20) exposes the signal in-between the original samples to the non-linear processing (30, 40). A lower sample rate or a higher signal quality can thus be achieved. The so-called fractional sample delays are preferably chosen differently for different systems depending on bandwidths, number of channels, number of non-linear processing steps (10) and other varying factors. The multi-step non-linear processing (10) concept of the invention is preferably used within a cascade of non-linear modifications and/or filtering steps (10).

Abstract: The present invention relates to improvements for a fast setup of physical communication channels in a CDMA-based communication system. A Node B of a telecommunication network is permitted to manage and assign a certain share of the downlink transmission resources of a radio network controller without inquiry of said radio network controller. On reception of a resource request message from a user equipment, the node B derives and specifies a certain amount of said resources that can be allocated to the user equipment. In a preferred embodiment of the present invention said resources are only assigned temporarily until the ordinary RL setup procedure, which involves the RNC, has been successfully finished.

Abstract: A received total wideband power (61A) in a wireless communications system is measured a number of times during a time interval. Preferably, also code powers ((C/I)i) are measured, directly or indirectly. A probability distribution of a first power quantity (63A, 63B), typically total received power is estimated from the set of measurements, preferably using Kalman filtering techniques, and preferably also a probability distribution of a second power quantity (62A, 62B) related to noise and interference signals. A conditional probability distribution of a noise rise measure to be determined is based at least on the probability distribution of the total power (63A, 63B). From that conditional probability distribution, a value of the noise rise measure is calculated.

Abstract: A system and method in a radio receiver for joint synchronization and noise covariance estimation of a received signal. A spatially and temporally stacked signal model, whereby successive samples of temporally adjacent received signal vectors and corresponding training vectors are stacked, is used in the derivation of the estimation problem. The Toeplitz structure of the channel response matrix is neglected in the formulation of the estimation problem. The resulting estimator jointly estimates a synchronization position, a channel response matrix, and a noise covariance matrix. An estimate of a whitened channel is then computed based on the noise covariance matrix and the estimate of the channel response matrix.

Abstract: Illegitimate use of IP addresses is counteracted. A network (1) includes a switch (5) with ports (P1,P2,P3) to subscribers (6,6A) and a port (PN) to a core network (2) with DHCP servers (4, 4a,4b). The switch includes a database (MAC1, MAC2), port numbers (P1, P2)) and VLAN identities (VLAN1, VLAN2) for the subscribers (6, 6A) and the filter has a list over trusted DHCP servers. Initially onlY DHCP messages from the subscribers are allowed. When the subscriber (6) requests (M1, M3) for an IP address it is checked that it is a DHCP message with valid subscriber values (MAC1, P1, VLAN1). A respond (M2, M4) with an allocated IP address (IP1) and lease time interval (T1) is checked to come from a trusted DHCP server. If so, a list in the filter (9) with correct information is dynamically generated (MAC1, P1, VLAN1, IP1, T1). A message (M5) from the subscriber (6) with false IP address is discarded by the filter. Attempts by the subscriber to use false IP address are counted and a warning signal is generated.

Abstract: The invention provides an establishment of a secret session key shared Between two network elements (NEa, NEb) belonging to different network domains (NDa, NDb). A first network element (NEa) of a first network domain (NDa) requests security parameters from an associated key management center (KMC) (AAAa). Upon reception of the request, the KMC (AAAa) generates a freshness token (FRESH) and calculates the session key (K) based on this token (FRESH) and a master key (KAB) shared with a second network domain (NDb). The security parameters are (securely) provided to the network element (NEa), which extracts the session key (K) and forwards the freshness token (FRESH) to the KMC (AAAb) of the second domain (NDb) through a second network element (NEb). Based on the token (FRESH) and the shared master key (KAB), the KMC (AAAb) generates a copy of the session key (K), which is (securely) provided to the second network element (NEb).