Abstract: A system and method for communicating first data packets having a first quality of service over a network system designed for communicating second data packets having a second quality of service. The network system includes a plurality of network nodes, where each of the network nodes includes a network switch. The first data packets are switched from each of a plurality of network switch input ports to a dedicated output port of the network switch. Network node congestion control is applied to the first data packets at the dedicated output port to selectively accept or discard the first data packets in accordance with their respective quality of service acceptance principles. Those of the first data packets that were accepted are multiplexed into one or more virtual paths having common output port destinations, and the virtual paths are input into a dedicated input port of the network switch.

Abstract: The present invention relates to a base station of a radio system whose antenna means (11) include: means (6 to 8) for receiving signals associated with the same logical channel by at least two antenna beams (1 to 4), measuring means (8) for measuring the signal level of the signals received by the antenna beams, and control means (8) for selecting one or more antenna beams (1 to 4) and for supplying the signals of the selected antenna beam to a receiver unit (5) of the base station (BTS1). In order that the best possible signal would be definitely transmitted to the base station, the base station (BTS1) comprises means for measuring the quality of the signals and for generating a quality signal (BER) and for supplying it to the control means (8), and the control means (8) are arranged to select an antenna beam (1 to 4) on the basis of the signal level measured by the measuring means and the quality signal (BER) supplied to the control means.

Abstract: A method and an equipment for packet prioritization when routing data packets is presented. Several priority classes are defined for the packets, and a first threshold value and a second, higher, threshold value is defined for each prioity class. In association with each packet, the oldest packet of a given prioritiy class is selected, and if the packet is older than the second threshold value of the priority class concerned, the packet is discarded, and the next priority class is selected. If the packet is older than the first threshold value of the priority class concerned, at least one packet of this priority class is transmitted until the oldest packet in the priority class is younger than the first threshold value of the priority class concerned, whereupon the next priority class is selected.

Abstract: A method and apparatus for maintaining component temperature in a base station is disclosed. The method and apparatus reduces or eliminates the time required for raising the internal temperature of components in a base station transceiver without incurring substantial cost. A power amplifier receives a signal at an input and provides an amplified signal at an output and a switch for switching between a first and a second bias circuit in response to a control signal, wherein the first bias circuit comprises an RF bias circuit for providing normal RF bias to the power amplifier and the second bias circuit is a cold start bias circuit for providing a cold start bias to the power amplifier. The power amplifier includes a power transistor. The cold start bias circuit causes the power transmitter to substantially increase an amount of heat dissipated by the power amplifier causing the temperature of the BTS to rise above de-ratings for the components.

Abstract: The invention relates to a method for resetting a processor, and a watchdog for generating a reset pulse to a processor which can initialize itself and which sends acknowledgement pulses at predetermined intervals to the watchdog comprising transmission means (5) for generating and transmitting reset pulses to the processor. The watchdog comprises counter means (7) for counting the number of reset pulses generated during initialization and for setting a predetermined limit value to reset pulses. The watchdog further comprises measuring means (4) for measuring the interval between acknowledgement pulses sent by the processor. In addition, the watchdog comprises transmission means (5) for transmitting a reset pulse when the interval between acknowledgement pulses differs from a predetermined interval.

Abstract: A method of estimating the channel impulse response (CIR) of a communication system is disclosed. The method comprises providing a first estimation of the CIR by an impulse response calculation, using correlation of signals to determine tap weights for the calculation, thereby providing a set of amplitude values within equally time spaced bins. The true path delay of a radio channel represented by the significant peaks in the first estimation is determined, by reference to amplitude values of those of the bins which surround the bin having the greatest amplitude. A refined estimation of the CIR is calculated using the significant peaks, such that these peaks represent substantially all the energy represented by the first estimation of CIR.

Abstract: An handover method and a call setup method in a mobile communication system. A cell to be assigned to the mobile station (MS) is selected on the basis of the measurement results and the special cell list. The selected cell is set as the target cell of the handover for the mobile station. The traffic channel for the mobile station (MS) is assigned from the base station of the selected cell.

Abstract: The present invention relates to reception method and apparatus. The invention is characterized in that received symbols are function of bits which are determined by means of temporally successive trellis levels, which comprises a predetermined number of states, with a transition from each of the states to a state at the next level being performed on the basis of a received signal.

Abstract: A cellular radio access network and a location updating in a cordless communications system, in a cellular radio access network (1), which is connected to one or more core networks (2, 3, 4, 5) or services (SP2 to SP5), each of them having a dedicated mobility management. In a cell, identities of all those location areas are broadcast to which said cell belongs. A subscriber terminal (MS) sends to the radio access network only one location updating message irrespective of how many core networks (2, 3, 4, 5) or services (SP2 to SP5) have a simultaneously changing location area at a handover from one cell to another. On the basis of the information contained in the location updating message, the network (1) defines the core networks or services and location areas to which the location updating applies and sends a location updating message informing the new location of the subscriber or the subscriber terminal separately to each defined core network or service.

Abstract: A method of directional radio communication between a first station and a second station comprises the following steps. A first signal transmitted from the second station is received at the first station. The first signal is receivable from a plurality of different directions. A principle beam direction from which the first signal is received by the first station is determined. A plurality of beam directions for transmitting a radiation beam is defined at the first station. Each of the beam directions is selectable. The determined principle beam direction and at least one other auxiliary beam direction is selected at the first station. The at least one auxiliary beam direction is adjacent to the determined principle beam direction. A second signal is transmitted from the first station to the second station in the selected beam direction.

Abstract: The invention relates to a method of existing a collect information phase at an IN service switching pont in such a way that call set-up control is transferred from the IN service switching point (SSP) to the control point (SCP), even though the maximum of information requested as additional information by the IN service control point has not been received. In the method, a new condition (EE) is determined for the collecting phase (PIC2) and after the condition is fulfilled, the collecting phase is exited in such a way that the service control point (SCP) can make a decision how the call will be continued. The condition (EE) is either the maximum collecting time (collectTimer), which determines for how long the collecting of information is allowed to take at the most, or the minimum number (minNumberOfDigits), which determines how may digits as least have to be collected.

Abstract: In fault-tolerant systems it is known to write data into two separate disk drives. It is also known to duplex computers so that when one computer fails, the other computer can continue operating. In such a system, the active unit usually controls both disk drives. It is also known to cache in the main memory of the computer the most recently used areas in the disk drive, since it is likely that these areas (e.g. directories) must be read again soon. A problem occurs when using duplexed computers each of which is to be provided with a possibility of using the disk drive (14, 24) while the operation is expedited by caching in the main memories of the computers (10, 20). If one computer modifies the data in the disk drive, the other computer is not necessarily aware of this, but it uses the outdated data in its memory. According to the invention, the computer (10) desiring to control the disk drive (14) reserves it for itself. If the reservation is successful, a disk talk is performed.

Abstract: A system is disclosed to operate within a multiple access system having remote devices that are located at varying distances from a central device using timing advance commands. The invention relates to inserting varying units of delay in the signal path from remote device to central device, wherein the units of delay are a fraction of the smallest timing advance duration. By scanning through the units of delay, thus triggering a timing advance command, the invention infers the distance of the remote device signal path more accurately than would be obtained by relying on timing advance settings alone. Several levels of resolution can be used to scan successively narrower regions.

Abstract: The invention relates to a method of determining the average effect of radio wave multipath fading in a desired area in a radio system. The desired area of a coverage area of a base station in the system is described by a digital map. The average effect of multipath fading of a transmitter output is determined in different sub-areas of the desired area. In order to reduce the computation amount signal fading parameters are determined at some point of each sub-area by a ray tracing method and the average effect of signal multipath fading in the sub-area is calculated using said parameters.

Abstract: The invention relates to a method and arrangement for modulating a signal to be transmitted, the arrangement comprising an encoder and a frequency modulator. In order to enable high rate transmission in a flexible manner in a narrow frequency band, the encoder (104) is a differential encoder and before the frequency modulator, the arrangement comprises means for multiplying the signal to be transmitted by a factor of the form &pgr;/(2m), where m is a positive integer greater than one.

Abstract: The invention relates to a direct data access (DDA) from a digital mobile network to a data network in a centralized manner in a first mobile switching center (MSC2). Another switching center (MSCI) is arranged to route a mobile data call, addressed to the centralized DDA, to MSC2 as a digital call according to a bearer service (UDI) supported by the mobile network. The interworking function of the routed data call are divided between the MSCs. MSC2 comprises a first interworking function (IWF2) that provides the adaptation functions required by the centralized DDA and the digital bearer service. MSC1 comprises a second interworking function (IWFI) providing the adaptation functions required by the radio connection and the digital bearer service.

Abstract: The invention relates to a data transmission method and a radio system implementing method. A transmitter has at least two modulation methods by which it can modulate a signal. One or more demodulators (106) of the receiver demodulates the received signal in a manner which corresponds to each modulation method used. The modulation method used for the signal is inferred in a reference block (110) from the impulse response estimate. The signal according to the inferred modulation method is detected in a detector (114).

Abstract: A method for reducing interference and a radio system where a signal spreadcoded by digital pseudo noise is used for communication are provided. As the delay distribution of the signals of subscriber terminal equipment at base stations is great and thus the mutual interference of the signals may also be great, the base station adjusts the phase of the spreading codes of the subscriber terminal equipment so as to reduce interference. The method and the radio system enable high data rates and reduce the calculation required for interference correction.

Abstract: In a TDMA cellular mobile communications system the radio interface between a mobile station and a base station consists of traffic frames which include several time slots in which in one time slot of an uplink direction frame the mo-bile stations can transmit in an access burst a request to the network to be assigned a radio connection for traffic. A repeater is added in the system through which the radio connection between the base station and the mobile station can pass, if necessary. The repeater converts the carrier wave frequency used by the base station to the carrier wave frequency used by the mobile station, and the carrier wave frequency used by the mobile station to the carrier wave frequency used by the base station. The repeater adds its own burst to the access burst of the mobile station, the said burst including the information which identifies the repeater.

Abstract: The invention relates to delivery of short messages to mobile stations and particularly to delivery of short messages in mobility-supporting packet radio networks that use a mobile communications network as an access network, to a dual-mode mobile station in a situation where the mobile station is not reachable in the packet radio network. The object of the invention is to minimize unnecessary signalling. The invention is based on the fact that parameters controlling the network elements are inserted into the signalling messages and a flag indicating the state of the mobile station is inserted into the home location register.