Abstract: The method includes routing message data from a source node to a destination node in a mobile ad hoc network. The mobile ad-hoc network includes a plurality of intermediate mobile nodes between the source node and the destination node, and a plurality of wireless communication links connecting the nodes together. The method includes, at the source node, discovering routing to the destination node, ranking discovered routes according to at least one link metric, and distributing the message data to the destination node along a plurality of the discovered routes based upon the ranking. The link metric may include a measurement of link delay, link capacity, link available capacity, and/or link reliability.

Abstract: A system and method employs standard DECT hardware adapted for use in the Industrial-Scientific-Medical (ISM) Spectrum wherein a Frequency Hopping Spread Spectrum (FHSS), multiple carrier, time-division-multiple-access (TDMA), time-division-duplex (TDD) technique provides wireless communications over the ISM Spectrum while employing standard DECT hardware. A baseband processor provides slot and frame timing to a RF sub-module wherein the preferred, although not exclusive number of carrier frequencies is programmed to seventy-five ranging between 2401.122 MHz to 2479.813 MHz and spaced 1.063 MHz apart and wherein each of the seventy-five channels supports a ten-millisecond frame preferably, although not exclusively, comprised of sixteen time slots.

Abstract: Apparatus, and an associated method, for a radio, such as cellular, communication system to facilitate communications between a mobile station and the network infrastructure. When the mobile station registers in the communication system, a dedicated reverse-link channel is allocated to facilitate communications of packet data between the mobile station and the network infrastructure. By providing dedicated channels, the mobile station becomes functionally connected to the network infrastructure and are analogous to a hard wired connection of a computer in a local area network.

Abstract: A method and system for uplink (UL) synchronization of an uplink transmission from a plurality of wireless transmit/receive units (WTRUs) to a Node-B in a code division multiple access (CDMA) system. A Node-B receives a transmission including a UL synchronization (SYNC_UL) sequence from a WTRU. A sampler samples the transmission at a sampling rate which is higher than a chip rate. The samples are down-sampled and the SYNC_UL sequence is detected at a lower rate. A first significant path location of the detected SYNC_UL sequence is determined, and based on the first significant path location, a final significant path location is determined. The final significant path location is quantized and UpPCHPOS is transmitted to the WTRU to adjust a UL transmission timing.

Abstract: A multi-layer network element for forwarding received packets from an input port to one or more output ports with quality of service. When output queues exceed or meet a threshold value below the queue's capacity packets are randomly discarded. When the queue becomes full, the network element determines which flow caused the queue to overflow. The priority of that flow is lowered. In a multicast packet, the packet may have different priorities at each output port. Scheduling of multiple output queues at each output port uses a weight round robin approach that allocates a weight portion of packets to transmit at each time interval. A packet is not interrupted during its transmission, even if the weight portion is met during a packet's transmission. The excess number of bytes transmited as a result of not interrupting the packet are accounted for in the next round.

Abstract: A system for the handling of calls by a packet-based telephony system by which calls invoking features not implemented on the packet-based system are handed off to an existing legacy circuit-switched telephony system for further processing. Initial address messages are forwarded to a packet network feature server, which determines whether the features invoked by the call can be provided. If not, the feature server assigns the call a trunk selection parameter according to the type of feature invoked. The trunk selection parameter is conveyed to a connection gateway, which routes the call on one of a plurality of voice trunks. The call is received by a circuit-switched switching system for further processing according to the feature invoked.

Abstract: An optical network with an optical adaptation layer whose order is higher than synchronous optical network (SONET) layer and lower than Internet protocol (IP) layer is provided. The optical adaptation layer is configured to construct an optical adaptation frame into which IP flows are aggregated at an edge node.

Abstract: In the Prior Art, redundant data streams comprising ATM cells are in turn merged in that an attempt is made to produce synchronism. This, however, lasts very long as a rule. The invention provides alleviation in that both data streams are written into buffer memories and the stored ATM cells are checked for equality. Transmission sequence numbers thus need not be provided.

Abstract: A marching algorithm for the selection of middle stage switch elements in a network uses an arbitrary but settled sequence in which middle stage switch elements are sampled. The sequence is applied in the forward direction to find an appropriate middle stage switch element during connection and in a reverse direction during disconnection to find an appropriate middle stage switch element for rearrangement. All of the input switch elements use the same marching sequence. The marching algorithm is applicable to both single rate and multi-rate connections. In the case of multi-rate connections, multiple rearrangements may occur at disconnect to match the capacity of the terminated connection.

Abstract: A method and apparatus for managing communication resources between nodes of a network is disclosed. The network utilizes both dynamic and static assignment of communication time slots. The invention includes a plurality of dynamic nodes wherein communication is accomplished as a result of a node's dynamic assignment to itself of specific time slots from a time multiplex structure. At least one static node is also included in the network. The static node does not participate in the dynamic assignment protocol. Instead, a time slot in said time multiplex structure is pre-assigned for communication with the static node. A dynamic node can serve as a surrogate for a static node, relaying communications between the dynamic and static portions of the network.

Abstract: A scheme for bounding latency of transmissions for QoS in network stations operating in shared medium access network. The length of segment burst transmissions are limited by allowing the segment burst transmission of a given priority to be interrupted by higher priority traffic. Restrictions are placed on frame length for transmissions of all priority levels or, alternatively, at all but the highest of the priority levels.

Abstract: A communication node contains intelligence for directing both internet protocol (IP) packets and Asynchronous Transfer Mode (ATM) cells toward their destinations. The ATM cells and IP packets may be received within a common data stream. The respective devices process the ATM cells and IP packets to direct the cells and packets to the proper output ports towards their destinations. The device is capable of performing policing and quality of service (QOS) processing on both the ATM cells and the IP packets.

Abstract: A communications system comprises a physical layer device (PLD) including a PLD send interface which, in turn, includes PLD parallel information outputs and at least one PLD control output. The system also includes a logical link device (LLD) which comprises an LLD receive interface which, in turn, includes LLD parallel information inputs and at least one LLD control input. First parallel communications channels connect the PLD information outputs to respective LLD information inputs, and at least one second communications channel connects the at least one PLD control output to the at least one LLD control input so that control signals are sent from the PLD to the LLD out-of-band from information signals. Accordingly, control speed is enhanced, and information throughput efficiency is not compromised.

Abstract: A flow of packet or cell-based communications traffic is monitored by: setting a first time interval over which measurements are to be made; counting number of packets flowing during that time interval and using the count to derive parameters which are indicative of the traffic meeting a sustained cell rate (SCR) requirement. Use of this cell counting method rather than a per-cell computation of a generic cell rate algorithm (GCRA) reduces computation requirements in monitoring traffic. Preferably the cell count is used to derive a running difference between the counted number of packets and an expected number of packets.

Abstract: A device is switched from a first physical interface on the device to a second physical interface on the device based on information in an interface redundancy group. The information in the interface redundancy group identifies the first physical interface as a primary interface for the device and the second physical interface as a secondary interface for the device.

Abstract: A packet switch which includes input line interfaces for converting variable length packets received from input lines to fixed length cells, a switch unit for switching said packets in cell units, output line interfaces for converting output cells from the switching unit to variable length packets and transmitting the variable length packets over output lines. Each of the input line interfaces has a cell output controller for queuing the fixed length cells for each output line according to the degree of priority of the cells, and for selectively outputting the stored cells in the queues in order of priority, thereby to suppress the transmission of cells with a low priority during the times of congestion.

Abstract: Embodiments of the invention provide various methods for detecting a spatial division multiple access (SDMA) channel swap. A first SDMA communication channel is assigned to a first user terminal that initially transmits its signal over the first SDMA communication channel. A second SDMA communication channel is assigned to a second user terminal that initially transmits its signal over the second SDMA communication channel. The first user terminal's signal and the second user terminal's signal are analyzed to determine that the first user terminal is transmitting its signal over the second SDMA communication channel and the second user terminal is transmitting its signal over the first SDMA communication channel.

Abstract: Video, voice and data are integrated using existing telephone connections by using a video network server to receive and transmit video signals to and from clients using telephone wires. Client frequency division multiplexing couplers, each associated with one of the clients, receive video and telephone signals from the client and frequency multiplex them onto the telephone wires for transmission. They also receive video signals from the server and frequency demultiplex them for transmission to the client. A video frequency division multiplexing coupler connected between the video network server and each of the client frequency division multiplexing couplers receive the video and telephone signals from the clients and transmit only the video signals to the video network server.

Abstract: Systems and methods for automated testing of multiple-protocol network environments wherein data which is formatted according to a plurality of protocols in sequence is automatically identified and compared to determine whether the data has been correctly transformed from each protocol to the next. An indication of whether the data has been correctly transformed may be presented to a user, along with information about the data itself, such as commands which may be included therein. The information presented to the user is in a user-readable form rather than raw data in order to facilitate analysis of the information by the user.

Abstract: A communication method for transmission and reception of data blocks in a packet-switched communication network based on a cellular network (PLMN), between elements, which are used as transmitters and receivers and which comprise means for receiving data blocks, means for transmitting data blocks, and protocol means for forming and processing data. In the method, for the transfer of data blocks at least one transfer window is formed which, formed in the transmitter, is used as a transmit window, which, formed in the receiver, is used as a receive window, and which covers a maximum of k data blocks to be transferred. For optimizing the transfer of data blocks, said maximum size k is selected from a group consisting of several alternative maximum sizes, wherein said maximum size k is selected according to predetermined rules.