Abstract: A voice signal from a microphone is processed for compressing and coding in a voice compressor. The compressed voice data is input into a transmission switching section. The transmission switching section switches and outputs the compressed voice data to either a UDP transmitter or a TCP transmitter according to a transmission switching signal that the network situation supervisory section outputs. The transmission switching signal allows-transmission using the UDP transmitter when a network is in a situation with a margin, and transmission using the TCP transmitter when a network is in a confused situation responding to network congestion information that is obtained from a network interface. This allows a protocol transmitting the compressed voice data to be selected corresponding to a congested situation of the network, and thereby a voice call without interruption can be obtained even though the network is in a confused and low-quality situation.

Abstract: A packetized-data processing apparatus includes a memory configured to store core groups of packetized data, a channel coupled to the memory and having a total bandwidth for transferring packets of data from the core groups, and a scheduler operatively coupled to the memory and the channel and configured to allocate amounts of the total bandwidth of the channel to each of the core groups that is backlogged, while limiting the amount of allocated bandwidth, and a corresponding transfer rate of packets of data, for each core group to a maximum allowable bandwidth for each core group, to schedule transfer of packetized data of the core groups from the memory to the channel in accordance with the respective amounts of allocated bandwidth for the core groups.

Abstract: Block forming method and apparatus of a digital bit stream, in which such an inconvenience that in spite of the fact that additional data regarding a partial packet to be located at the end of a main data portion exists in an additional data portion, the partial packet becomes a block in which no byte actually exists can be eliminated. When a space area smaller than one packet occurs in the end portion of the main data portion of the data block, partial data of the next packet is stored in the space area, the additional data of the next packet is stored in the additional data portion as additional data of one partial packet and the remaining data of the partial data of the next packet is stored in a start portion of the main data portion of a next data block.

Abstract: A system and method directed to providing a broadcast/multicast in a circuit-switched network. An exemplary method includes receiving at a first switch a call directed to a called number; determining whether the first switch has an active connection to the called number; if the first switch has an active connection to the called number, merging the call with the active connection; and if the first switch does not have an active connection to the called number, routing the call to a next switch. The process is repeated as necessary until a next switch with an active connection is identified and/or the switch serving the called number is reached. The present invention conserves network resources and increases network efficiency, in part, by not carrying a call any further than is necessary for the caller to participate in a broadcast/multicast.

Abstract: A code-division-multiple-access (CDMA) system employing spread-spectrum modulation. The CDMA system has a base station (BS), and a plurality of subscriber units. The signals transmitted between the base station and subscriber unit use spread-spectrum modulation. The improvement method for adaptive reverse power control (APC) from a subscriber unit (SU) to a base station (BS), comprises the steps of sending from the subscriber unit, using spread-spectrum modulation, a SU-spreading code on a reverse channel. The base station despreads the SU-spreading code on the reverse channel as a despread signal, determines a first power level Pd which includes power of the despread signal plus noise and a second power level PN, which includes despread-noise power.

Abstract: A pipeline-based matching scheduling approach for input-buffered switches relaxes the timing constraint for arbitration with matching schemes, such as CRRD and CMSD. In the new approach, arbitration may operate in a pipelined manner. Each sub-scheduler is allowed to take more than one time slot for its matching. Every time slot, one of them provides a matching result(s). The sub-scheduler can use a matching scheme such as CRRD and CMSD.

Abstract: A method and system for assigning downlink and uplink channels to a mobile station registered with a base station, which uses an interference-sensing scheme and which provides improved reliability and performance over conventional schemes.

Abstract: A method and apparatus for digital subscriber line (xDSL) communications between one or more digital signal processors (DSPs) and analog front ends (AFEs) each coupled to corresponding subscriber line(s). The apparatus transports channels of data between subscribers and the DSP(s). The apparatus includes a bus for the transport of digital data, a DSP AFE interfaces. The DSP interfaces couples the DSP to the bus. The DSP interface accepts downstream channels of digital data from the DSP and transmits packets each associated with a corresponding one of the downstream channels to the bus. Each of the packets identifies a targeted AFEs coupled to a selected one of the subscriber lines. The AFE interfaces each couple an associated one of the AFEs to the bus. Each of the AFE interfaces transmits selected packets to a selected one of the subscriber lines for the transport to the subscriber.

Abstract: The rate at which a node transmits data is modified dependent on the receive rate by selecting one of a plurality of predetermined quantum values dependent on the difference between the number of bytes received and the number of bytes transmitted. An offset equal to the difference between the number of bytes transmitted and the number of bytes received is compared to a predetermined threshold value. A predetermined quantum value is selected dependent on the result of the comparison. Rate shaping is applied to the transmit data by halting data transmission for an inter-gap interval dependent on the selected quantum value.

Abstract: A Medium Access Control (“MAC”) Layer protocol and a method for contention resolution using the protocol is provided for networks with multiple priority traffic. The protocol is used where a physical layer connected to a transmission medium uses a carrier modulation scheme with multiple frequencies. Stations on the network that desire access to the transmission medium use a carrier modulation scheme with multiple frequencies. Stations that desire access simultaneously transmit a single frequency selected at random from a set of physical layer frequencies during an open-contention-interval. At the same time, the stations listen to a combined frequency signal and analyzes it for frequency content. The station whose own frequency matches the highest frequency signal in the combined signal gains access to a transmission medium. In the event of a collision, a restricted-contention-interval is used only for the colliding stations.

Abstract: Apparatus, and an associated method, for a 3G, cellular communication system having an access network and a core network. The access network is operable pursuant to the cdma2000 the operational specification, and the core network is operable pursuant to the 3GPP architecture using GPRS. A wireless gateway that provides an interworking functionality is provided to permit to the access network to utilize GPRS as a transport layer through which to transport packet-formatted data, thereby to effectuate, for example, multimedia applications over IP.

Abstract: A method and apparatus for selectively accelerating network communications provides improved operation of network communications through channels with long delays, such as a satellite communications channel. A configuration management mechanism provides a selection of acceleration configuration for particular addresses of devices that may communicate through the communications channels. Acceleration may be bypassed for particular addresses or classes of devices within the network and priorities may be assigned, permitting a cut-off of acceleration when a threshold number of sessions is reached. The method and system may also allow a higher priority class of session to preempt lower priority session by removing resources from the lower priority session and assigning them to the higher priority session. The data rate of the lower priority session is then lowered (due to the absence of acceleration or reduced buffer size) to reduce traffic flow.

Abstract: To address the need for dispatch in a CDMA communication system, each mobile unit (309, 319) and CBSC (301, 311) involved in a call are allowed to establish an independent RLP session between them. Each session contains its own unique RLP sequence numbers that are not shared. Reverse link sequence numbers are passed from the source CBSC (301, 311) (serving the “talking” mobile) to the target CBSC(s) (301, 311) (serving the “listening” mobiles). However, instead of being directly used by the target CBSC(s) (301, 311) for its forward link RLP sequence number, the sequence numbers passed to the CBSC (301, 311) is translated to the existing target CBSCs (301, 311) current RLP sequence numbers.

Abstract: A separating device and method and a signal receiving device and method are presented. The separating device and method receive plural data streams and then separate and extract at least a portion of data from the received data streams. The signal receiving device and method receive plural data streams and then select, separate and extract at least a portion of the data from the data streams. Then the signal receiving device and method apply signal processing to the portion of the data that has been selected, separated and extracted.

Abstract: A mobile communication system includes a mobile terminal, a radio access network, and a home agent. The radio access network includes a radio base station which carries out packet communication with the mobile terminal through a radio channel, and a radio channel control station which controls the radio base station. The home agent stores data transmitted from said mobile terminal and associated with a current position of said mobile terminal. The packet communication between the mobile terminal and the radio channel control station is controlled based on radio channel control of packet switching connection. The packet communication from the core network to the radio channel control station is controlled based on mobile IP (mobile Internet Protocol).

Abstract: An approach for allocating system capacity of a communication switching system for exchange of traffic is disclosed. The system includes multiple terminals that request allocations of system capacity. The capacity is partitioned into a provisioned portion and an unprovisioned portion, in which a portion of the terminals constitutes a pool having a plurality of sub-pools. According to one embodiment, a control computer communicates with the plurality of terminals and allocates the provisioned portion of the capacity to the plurality of sub-pools of the terminals. The provisioned portion of the capacity is arranged into sub-partitions, wherein one of the sub-partitions is not associated with the sub-pools of terminals. Remaining sub-partitions are associated with the sub-pools of terminals.

Abstract: A unit for receiving and re-transmitting data signals comprising multi-byte packets separated by multi-byte inter-packet gaps includes a FIFO store, a first, write, state machine for controlling the writing of packets into the FIFO and a second, read, state machine for controlling read-out of packets from the FIFO. The first state machine is controlled by a recovered clock and the second state machine is controlled by a local system clock. The first state machine is operative in a writing sequence to write into the FIFO the words of each received packet in successive locations and thereafter to cause the writing into the FIFO of a succession of idle bytes representing a selected inter-packet gap; and the second state machine is operative in response to maintain a reading sequence in arrears of the writing sequence by a selected number of said locations. The arrangement maintains the inter-packet gap despite slight differences between the recovered clock and the system clock.

Abstract: A communication unit (110) that wants to transmit a data packet to another communication unit (105) must acquire access to a common communication channel (not shown) before transmitting a data packet (440). For data packets of realtime applications, quality of service (QOS) parameters for the data packet are used to define transmission parameters to communicate the data packet (440). These parameters include Taccess (420) and Tdelay (430). In addition, compliance with predetermined requirements of size relationship between request-to-send (RTS) and clear-to-send (CTS) packets are imposed.

Abstract: A method and system for modifying and transmitting intelligent-network service data or service parameters in a telecommunication system comprising an intelligent network, a service control point of the intelligent network, a service data point of the intelligent network, a second telecommunication network and means for connecting the intelligent network to the second telecommunication network. The second telecommunication network is connected via a gateway to the service logic of the service control point and/or to the service data point and a service data parameter and/or the service logic of the intelligent network is modified using a protocol supported by the second telecommunication network.

Abstract: A wireless time division duplex communication system using code division multiple access has a base station and user equipments. The system communicates using communication bursts. Each communication burst has a unique channelization code and a midamble code. Each midamble code is mapped to a set of at least one channelization code. For each communication burst to be transmitted in a time slot from the base station, the midamble code mapped to that burst's channelization code is determined. Communication bursts are generated and transmitted in the time slot. Each burst has the determined midamble code for its channelization code. The user equipment receives the bursts and determines each received midamble code. The user equipment determines the channelization codes of the transmitted communication bursts based on in part a result of the determining of each received midamble code.