Abstract: The invention provides for conversion of latitude and longitude to an addressing scheme that supports current TCP/IP (Ipv4) and future addressing (Ipv6/Ipng) requirements. More specifically, it allows a decentralization of the unicast point to a device on the hosted network. Geographical Internet Protocol (geoIP) addressing will facilitate anycast routing schemes in which the nearest node has a statically assigned geoIP. Geo-routing and network management become a function of the geoIP address.

Abstract: The invention relates to a multitask processing system including a data bus and a command bus. Each one of a plurality of operators is provided to perform a processing determined by an instruction and is likely to issue a command request in order to receive an instruction from the command bus and to issue a transfer request on response to an acknowledgment of the command request, in order to receive or provide data being processed, through the data bus. A memory controller arbitrates the transfer requests and manages the data transfers on the data bus between the operators and a memory. A sequencer arbitrates the command requests, determines instructions to provide the operators with, and manages the instruction transfer through the command bus.

Abstract: A scalable, multi-protocol mobile switching center in a wireless communications network provides communications control for digital and analog wireless communications devices including devices that operate according to GSM and IS-41 standards. The hardware and software architecture of the switching center is designed so that processing that is unique to a particular protocol is performed at the lowest possible level, and remaining processing can use generic procedures. The switching center incorporates a home location register and visitor location register that are used in conjunction with software applications to determine the protocol of mobile communications devices using the wireless communications network. The mobile switching center can be used to provide a large scale distributed wireless network or a small scale wireless network. The switching center can also be used as an adjunct to a private branch exchange to provide in-building wireless services and call control.

Abstract: A pointer processing apparatus in an SDH transmission system used to serially conducting a pointer process on inputted multiplex data has an address generating unit for allocating an address to each channel of the multiplex data, a RAM for holding an information group obtained by a pointer extracting process and a pointer process, and RAM controlling unit for controlling a sequence of an operation to write-in/read-out the RAM to serially conduct the pointer process on the received multiplex data, thereby largely decreasing the circuit scale, the power consumption, the number of distributions and the like. A POH terminating operation process is conducted in a POH terminating operation process unit, and an obtained result of the POH terminating operation is stored in a storage area for a corresponding channel of a storage unit, whereby the POH terminating operation process can be conducted without separating a multiplex signal into channels.

Abstract: In the equation for obtaining the number of increase or decrease bits Zij on each channel for each frame defined in the specification TS25.212 Ver.3.1.0 of 3GPP that is a standard organization of the 3rd generation digital mobile communication, Ndataj is multiplied by a calculation result of RMm*Nmj/RMm*Nmj. According to a rate matching calculation method of the present invention, the correction value 1/N2dataj is added in order to prevent the added whole value of the equation from exceeding 1 when Ndataj is multiplied.

Abstract: A communicating apparatus is disclosed which has been connected to both of the IPv4 network and the IPv6 network for converting an IPv4 multicast packet into an IPv6 multicast packet. The communicating apparatus, which has held the IPv6 multicast addresses, holds the IPv4 multicast addresses of a multicast group on the IPv4 network and the held IPv6 multicast addresses in correspondence with each other, said communicating apparatus having been a member of said multicast group. Moreover, the communicating apparatus converts the IPv4 multicast address of the received IPv4 multicast packet into the IPv6 multicast address held in correspondence with the IPv4 multicast address, then transmitting the multicast packet to the IPv6 network.

Abstract: A power measurement means for a mobile station for measuring transmission power of a base station in an asynchronous code division multiple access (CDMA) communication systems using diversity techniques is disclosed. The power measurement means comprises scramble code generators for generating scramble codes which are allotted to each said base station, multipliers for despreading the received pilot channel signals that are spread by the scramble codes, integrators for obtaining amplitudes of the signals by integrating the despread pilot channel signals for each slot period of the pilot symbols, and outputting the amplitudes at the end time of each slot period, squarers for obtaining the power value of the signal by squaring the amplitudes, delay means for delaying the power value one slot period, an adder for adding the power value output from said squarer and the power value provided by said delay means, and switches for connecting to the adder at the end time of every two slots.

Abstract: For checking transfer of data cells in an asynchronous switching arrangement, cells are cyclically marked and counted before entering and after leaving the arrangement. A periodical time frame composed of N interleaved checking cycles is imposed. Each cycle (C1) includes two phases, a first phase (IC1) for marking and counting the cells, when received and before switching, and a second counting phase (OC1) for counting cells after switching. An identification mark is introduced in every cell received during the first phase of every cycle, it is linked to the position of this cycle in the time frame. Cells marked according to a cycle are counted as soon as switched during the second phase of the cycle, which starts with a determined delay (d1) during each first phase, for a determined duration (t2). A determination of the correspondence between the two counts obtained during a cycle is made and induces a fault signaling as soon as such a correspondence as otherwise determined is not obtained.

Abstract: A separation circuit, method of determining a residual level of an echo, and an echo canceling system, bit pump and transceiver employing the circuit and method. The echo canceling system employing the separation circuit is couplable between a transmit and receive path of the bit pump and generates an echo canceling signal. In one embodiment, the separation circuit includes a symbol determination circuit that accepts a receive signal, propagating along the receive path, substantially free of an echo and determines a symbol associated with the receive signal. The separation circuit also includes an estimator stage, coupled to the symbol determination circuit, that receives the symbol and provides an estimated receive signal. The separation circuit generates data representing a residual level of the echo as a function of the estimated receive signal and the echo canceling signal.

Abstract: A system and method for supporting Internet Protocol (IP) Multicast in mesh TDMA satellite networks using a centralized route server architecture, which conserves link bandwidth and minimizes delay. Individual satellite terminals perform forwarding of multicast IP traffic to destination terminals based on information provided by the route-server. Multicast routing protocols need to be supported only at the route server, thus minimizing the CPU and memory resources required at the end terminals. Channel capacity for multicast traffic can be statically or dynamically assigned and takes full advantage of the broadcast nature of the medium.

Abstract: There is provided a frame synchronization method using the correlation characteristic of a pilot having a minimum side lobe coefficient when the chip rate of the physical channel up-link or down-link is 3.8 Mcps in a W-CDMA mobile communication system. The frame synchronization method using an optimal pilot pattern, including the steps of receiving code sequences with the slot length of (2l+1) for a radio frame according to an arbitrary chip rate; arranging the received code sequences corresponding to the slot length for the radio frame and performing auto correlation according to a reception location of the code sequences, and simultaneously, arranging the code sequences corresponding to the slot length for the radio frame and performing cross correlation according to a reception location of the code sequences; and observing the correlation results, to detect frame synchronization.

Abstract: Multiple network switches are configured having memory interfaces that transfer segmented frame data to each other via a data path having multiple rings connecting the network switches. The memory interfaces are also configured for transferring the segmented frame data to respective local buffer memories for temporary storage. The data path transfers the data units between the switches according to a prescribed sequence protocol, optimizing memory bandwidth by requiring only one read and one write operation to and from a local buffer memory for each segmented frame data being received and transmitted through the switches.

Abstract: The present invention allows data transmissions to cross from one clock domain to another, in one embodiment, the invention includes an idle removing block operating at a first clock speed to remove idles from received data stream, a buffer coupled to the idle removing block to receive the data packets from the idle removing block, the buffer generating an idle removal control signal to the idle removing block to enable the removal of idles by the idle removing block, and an idle insertion block coupled to the buffer to receive data stream from the buffer and insert idles into the data packets, the idle insertion block receiving an idle insertion control signal from the buffer to enable the insertion of idles.

Abstract: A method of signalling a message using a terminal address across multiple network entities is provided. At least two contiguous network entities are associated with addressing spaces for which message addresses are not routable by way of the terminal address and are not otherwise routable by way of a single address. The method stores a terminal address of either an originating or terminating network entity. At every network border between any two contiguous network entities wherein an immediately succeeding network entity does not provide an address through which the message is routable, it is determined whether the address is to be stored and replaced with another address. If so, the address is stored so as to permit its subsequent retrieval. Once the address has been stored, the another address is assigned to be the address and the message is routed in the succeeding network using the another address.

Abstract: A method for synchronizing a mobile radio receiver with a frame structure of a radio signal received from a specific base station assumes that each base station transmits a predefined, individual sequence of frame synchronization codes for each frame. The synchronization codes are detected and decoded in the mobile radio receiver and a characteristic code parameter is allocated to them. The sequence transmitted by the specific base station is identified on the basis of the code parameters and the start and end times of the sequence are defined. The mobile radio receiver is frame-synchronized with these times.

Abstract: A packet forwarding method and apparatus performs multiprotocol routing (for IP and IPX protocols) and switching. Incoming data packets are examined and the flow (i.e., source and destination addresses and source and destination socket numbers) with which they are associated is determined. A flow table contains forwarding information that can be applied to the flow. If an entry is not present in the table for the particular flow, the packet is forwarded to the CPU to be processed. The CPU can then update the table with new forwarding information to be applied to all future packets belonging to the same flow. When the forwarding information is already present in the table, packets can thus be forwarded at wire speed. A dedicated ASIC is preferably employed to contain the table, as well as the engine for examining the packets and forwarding them according to the stored information. Decision-making tasks are thus more efficiently partitioned between the switch and the CPU so as to minimize processing overhead.

Abstract: A transfer controller with hub and ports is viewed as a communication hub between the various locations of a global memory map. A request queue manager serves as a crucial part of the transfer controller. The request queue manager receives these data transfer request packets from plural transfer requests nodes. The request queue manager sorts transfer request packets by their priority level and stores them in the queue manager memory. The request queue manager processes dispatches transfer request packets to a free data channel based upon priority level and first-in-first-out within priority level.

Abstract: A detector for determining which interface protocol is in use by a serialiser/deserialiser, and comprising detecting channels composed of clocked delays and bit comparators for detecting the presence of idle signals coded according to either ten-bit or five-bit protocols using either one or two clocks.

Abstract: A method and a configuration for transmitting data over a radio interface which is organized into timeslots with finite radio blocks in accordance with a TDMA subscriber separation method are described. In the method, radio stations transmit, within a timeslot, at least two training sequences that are known to a respectively receiving radio station and by which the latter carries out channel estimations. The training sequences are positioned here in timeslot in such a way that the maximum distance between a data symbol and a nearest training sequence is minimized.

Abstract: A method and a communication circuit for directing control of communication signals in a concatenated payload in a communication circuit is disclosed. The method and apparatus includes receiving a multiplex order of the concatenated payload in M communication signals, dividing the M communication signals by three to determine a number Y, and determining the control of the M communication signals by designating the first signal of the M communication signals as a control signal, designating the second signal through a Yth signal of the M communication signals as being controlled by the immediately preceding signal thereto, and designating each Y+1th signal of the M signals through the Mth communication signal as being controlled by a signal Y positions prior thereto. The method and communication circuit includes communication signals that are synchronous transport signals.