Abstract: A technique for optimizing cut-through for broadcast and multi-cast data packets in a multi-port bridge for a local area network (LAN). The multi-port bridge includes a plurality of ports for communicating packets with an associated segment of the LAN. Each of the ports is coupled to a data bus for communicating packets among the ports. A packet buffer is coupled to the data bus for temporarily storing packets undergoing communication between the ports. At least one of the ports includes a transmit packet store for receiving packets to be transmitted by the port and a broadcast packet store for receiving broadcast and multi-cast packets to be transmitted by the port wherein the broadcast packet store receives a broadcast or multi-cast packet only when the transmit packet store is occupied. The transmit packet store can receive a packet from the packet buffer or at the same time the packet buffer receives the packet.

Abstract: A CDMA communication system including a variable rate vocoder transmits voice data without restriction of an encoding rate of the vocoder and transmits a signaling message so that voice quality of the CDMA communication system can be improved. If the signaling message is an emergent signaling message to be transmitted within a certain time, the encoding rate of the vocoder is restricted to a half rate, a quarter rate, or an eighth rate. Thus, the signaling message can be transmitted with the voice data within the certain time, so that delay of the signaling message transmission can be prevented.

Abstract: A voice relaying apparatus includes a receiving section for receiving a cell from an asynchronous transfer mode (ATM) network, a plurality of cell assembling/disassembling units for assembling and disassembling the cells, and a transmitting section for transmitting the cells assembled by each of the plurality of cell assembling/disassembling units. Each of the plurality of cell assembling/disassembling units is composed of a cell disassembling section for disassembling the cell received by the receiving section, a detecting section for detecting whether or not the voice relaying apparatus is carrying out a relay switch operation, and a cell assembling section for assembling the cell disassembled by the cell disassembling section and then sending to the transmitting section, if the fact that the voice relaying apparatus is carrying out the relay switch operation is detected by the detecting section.

Abstract: A radio base station in a CDMA mobile communication system for allocating radio channels to mobile stations at a plurality of different bit rates. The base station including a storage part for storing a maximum number of radio channels that makes a signal-to-interference noise power ratio for each channel greater than a predetermined value. The maximum number having a value which changes in steps depending on a bit rate used for a call presently made. A control part for reading the maximum value stored in the storage part and allocating radio channels to the mobile stations in a range that does not exceed the maximum value.

Abstract: A method and system are disclosed for creating an interface between a packet-switched network and an IN, which is based on an interface between an associated circuit-switched network and an IN/CAMEL service. Meanwhile, the CAMEL application can also provide IN services to mobile subscribers while they are roaming in other networks (e.g., international roaming).

Abstract: A pipelined linecard architecture for receiving, modifying, switching, buffering, queuing and dequeuing packets for transmission in a communications network. The linecard has two paths: the receive path, which carries packets into the switch device from the network, and the transmit path, which carries packets from the switch to the network. In the receive path, received packets are processed and switched in an asynchronous, multi-stage pipeline utilizing programmable data structures for fast table lookup and linked list traversal. The pipelined switch operates on several packets in parallel while determining each packet's routing destination. Once that determination is made, each packet is modified to contain new routing information as well as additional header data to help speed it through the switch. Each packet is then buffered and enqueued for transmission over the switching fabric to the linecard attached to the proper destination port.

Abstract: A method and apparatus for providing RSVP capability for senders that either cannot or do not initiate RSVP processes is provided. An RSVP proxy is connected between a sender device and a receiver device on a computer network. The RSVP proxy detects a new traffic flow and determines whether an RSVP PATH message is appropriate for the traffic flow. If it is so determined, the RSVP proxy generates and communicates the RSVP PATH message through the network to the receiver device. The appropriateness of an RSVP PATH message can be based upon predetermined relationships or logic involving one or more of network parameters, transport parameters, and characteristics of the traffic flow, whether another RSVP signal is detected associated with the traffic flow, and other traffic flow attributes determined from decoding the traffic flow packets. The RSVP proxy can also interface with a policy server on the network to facilitate generation of the RSVP PATH message according to one or more of the traffic flow attributes.

Abstract: Near-far effect fading is counteracted by changing the spreading factor used for uplink channel spreading. The determination that a radio uplink channel power fade exists can be made in either the radio access network or the mobile station.

Abstract: The present invention relates to efficient recovery of High Speed Downlink Packet Access (HSDPA) data following handover. The present invention discloses a method and system for the UE to perform a serial of actions in order to reduce the latency and potentially prevent loss of PDU transmission during the serving HS-DSCH cell change procedure. A new criterion is introduced for UE generation of the status report of RLC PDU. The UE generates status report of the PDUs as soon as possible following notification of the HS-DSCH cell change indicated by the RRC procedure to more efficiently recover source Node B buffered data. PDU status may be signaled for each AM RLC instance associated with the HS-DSCH transport channel. Furthermore, upon Inter Node B serving HS-DSCH cell change the SRNC may wait for PDU status report before initiating transmission of new data in target cell.

Abstract: A method for establishing a digital communication link between an originating subscriber terminal and at least one called subscriber terminal, said method being better adapted to the transmission bandwidth used by a subscriber, has the following steps: First, a provisional link at a standard transmission rate from the originating subscriber terminal to the called subscriber is requested from a switching center. That provisional link is then established by the switching center. Next, a new, lower value for the transmission rate is selected by the originating subscriber terminal. That new value is then agreed upon with the switching center. Lastly, the latter switches the transmission rate of the provisional link over to the new, lower value, thus completing establishment of the communication link. The invention can advantageously be used in a telecommunications network, which for example operates according to the ISDN standard, to economize on transmission capacity and reduce call charges.

Abstract: A dual addressing mode is described in which reduced-length addresses (referred to as short addresses) are substituted for standard addresses (referred to as long addresses) for traffic whose source or destination is internal to a given virtual network topology. The required length of short addresses used for a given virtual topology is dependent on the number of devices reachable within the topology. For a virtual topology with less than 256 addressable devices, for example, 8-bit short addresses can be used. When a node within the virtual network sees a packet with a short destination address in the header, the node understands the address to be within the virtual network and routes the packet accordingly. If a source address is a short address, the virtual network can identify the source within the virtual network. For packets originating in the virtual network whose destination is also in the virtual network, both the source and destination addresses can be short addresses.

Abstract: A network packet switching engine is described. The switching engine generates a priority to be associated with a packet of data. The switching engine receives a packet of data. Based on information in the packet (e.g., source address, destination address, tag priority, receive port) and other information (e.g., candidate priorities, a set of flags, and a priority table), the switching engine determines a priority for the packet.

Abstract: A system and method in accordance with the invention provides efficient allocation of network resources to network virtual connections while providing reliable and guaranteed quality of service. Such a system is generally used in a network that includes a plurality of nodes and a plurality of links interconnecting the nodes. In accordance with an embodiment of the invention, for each connection in the network established between a pair of nodes, a normal path ni between the nodes having a rate Ni is established and an alternate, or backup, path bi having a rate Bi is established. Information is only transmitted on the backup path in the event of a failure on the normal path. The system further maintains information for each link as to the resources, such as bandwidth, utilized by the connections. The system then utilizes the maintained information to determine whether new connections can be accommodated and still meet quality of service guarantees.

Abstract: In accordance with the method and system of the present invention, a first link protocol utilizing a set mode command is sent from one or more transmit terminals to establish a link with one or more receive terminals. The set mode command comprises a frame format including an identifying byte field in accordance with International Telecommunication Union's Q.921 Annex E protocol specification. The one or more transmit terminals wait a predetermined T200 time interval to receive a response from the one or more receive terminals to determine if the link is established. If a response is not received from the one or more receive terminals, the one or more transmit terminals resends the set mode command a predetermined N200 times. If the link is still not established within the predetermined N200 times, a second link protocol utilizing a set asynchronous balanced mode extended command having a different identifying byte field in accordance with International Telecommunication Union's Q.

Abstract: A method and/or an apparatus which places a broadcast message which the source expects a reply message in a broadcast message for route discovery. The combined message is broadcast throughout the ad-hoc network. When the combined broadcast message is received at the destination node, the destination node generates a response message including a reply message to the broadcast message that the source node expects a reply. The response message is sent back to the source node over the route which the combined broadcast message traveled to the destination node.

Abstract: A method and an apparatus are disclosed for communicating between dissimilar radio voice communication devices across a wireless or wireline interface. The apparatus comprises a voice over Internet protocol (voIP) terminal connected to a computer network and an analog radio transceiver. The voIP terminal is comprised of at least one microprocessor for providing master control to a data acquisition (DAQ) board to create a system which is fully integrated in terms of the interface capability it provides to end users. In operation, the voIP terminal receives analog data from the analog radio transceiver, converts the data into a format recognizable by the computer network, and transmits the data to a desired location on the network. It also receives digital data from the computer network and transmits it into a format recognizable by the attached analog voice transceiver.

Abstract: In a telecommunication device the handling of data to be transmitted proceeds according to a protocol stack having a L3 layer and a MAC layer. For handling data flows between the L3 layer and the MAC layer the following steps are perfomed: a flow of data to be transmitted coming from the L3 layer is demultiplexed into a number of component data flows, each component data flow having a certain Quality of Service requirement, the component data flows are arranged into groups where the Quality of Service requirement of each component data flow in a group is similar to the Quality of Service requirements of the other component data flows belonging to the same group, the component data flows are multiplexed groupwise into multiplexed data flows and the multiplexed data flows are outputted to the MAC layer.

Abstract: A network switch includes a plurality of receive ports for receiving addressed data packets and a plurality of transmit ports for forwarding the addressed data packets and structure responsive to data in said the packets for directing received packets to the transmit ports. In respect of at least one of the transmit ports the switch includes an output buffer for storing data packets before they are forwarded from the port and an allocation controller. The allocation controller allocates each packet destined for the buffer and each packet leaving the buffer for the port into at least one of a plurality of categories, which may be based on priority or protocol data and may define traffic types such as video or audio.

Abstract: An apparatus and method for controlling the data flow of the Ethernet hub in a half-duplex mode, wherein the hub includes a switch to control data packets flowing through a plurality of communication ports. The system includes a destination address (DA) detector for detecting the DA of the data packet received through the input-port of the communication port to determine whether the data packet is to be treated by the switch, a logic gate for generating a selection signal based on the determination of the DA detector and an overload signal supplied by the switch when the hub is overloaded with the data packets, a jamming signal generator for generating a jamming signal in response to the selection signal, a MAC for converting the data packet into a bit stream as set forth in a carrier-sense multiple access with a collision detection (CSMA/CD) protocol, and a selector for selectively transmitting the jamming signal or the packet from the MAC in response to the selection signal.

Abstract: An integrated multiport switch operating in a packet switched network provides the capability via distributed egress logic to alter VLAN tags on a port by port basis. An internal rules checker (IRC) analyzes the header of a data frame to determine the frame type: untagged, VLAN-tagged, or priority-tagged. The IRC searches the untagged set table for the set of ports that are untagged for a particular VLAN. The IRC passes a forwarding descriptor that includes the frame type and a operational code (opcode) to a Port Vector FIFO logic (PVF). The PVF is responsible for creating a new opcode that instructs a dequeuing logic to add, remove, modify the VLAN tag, or send the frame unmodified. The opcodes generated by the PVF are individualized for each output port.