Abstract: Embodiments of the present invention disclose a radio communication system and a radio access method. In accordance with the embodiments of the present invention, an AP with a PDP forward function unit forwards service traffic accessing an AS to a Packet Radio Service Gateway Support Node, and sends Internet service traffic to the Packet Radio Service Gateway Support Node or directly sends the Internet service data to the Internet via a configured forwarding interface according to the service property of the service traffic. Embodiments of the present invention further disclose an Access Point and a gateway. Therefore, the load of network elements of a mobile network is reduced; meanwhile, the control and the management of the high increment value services by operators can be guaranteed. The investment of the CS network can be protected by the gateway as a concentrator of Access Points and a forwarding node of CS services in the embodiments of the present invention.

Abstract: A method, apparatus and computer program product for providing fast reroute of a packet is presented. A unicast packet is received by an FDU in a data plane of a network element and a destination is determined for the packet. A lookup is performed in a port state table maintained by the FDU to determine an available local port that is in an UP state for the destination, and if no local port is UP, then a lookup is performed in the port state table to determine an available remote port that is in an UP state for the destination. If a port in the UP state cannot be determined for the unicast packet, then the packet is dropped.

Abstract: Methods, apparatus and data structures are provided for managing multicast IP flows. According to one embodiment, a network switch module includes a memory and multiple processors partitioned among multiple virtual routers (VRs). Each VR maintains a data structure including information relating to multicast sessions handled by the VR and including a first pointer for each multicast session, a chain of blocks of second pointers and one or more TCBs. Each first pointer points to a chain of blocks of second pointers. Each second pointer corresponds to an OIF of the VR participating in the multicast session defined by the first pointer and defines how many times to replicate packets associated with the multicast session. The TCBs store control information relevant to processing or routing packets. Each second pointer points to a TCB, which identifies the OIF out which packets of the multicast session are transmitted from the VR.

Abstract: A network node includes a primary incoming interface, a secondary incoming interface and a data flow control unit. The primary incoming interface is operable to receive traffic associated with a particular source and multicast group. The secondary incoming interface is operable to serve as a backup interface if the primary incoming interface or a transmission path coupled to the primary incoming interface is inoperative. The data flow control unit is operable to determine whether the network node is part of a ring topology and if so, forward traffic received on the primary incoming interface associated with the source and multicast group to both a host which joined the multicast group and the secondary incoming interface and forward traffic received on the secondary incoming interface associated with the source and multicast group to the primary incoming interface.

Abstract: A method for Ethernet virtualization using assisted frame correction. The method comprises receiving at a host adapter data packets from a network, storing the received data packets in host memory, storing the received data packets in a hardware queue located on the host adapter, setting a status indicator reflecting the status of the data packets based on results of the checking, and sending the status indicator to the host memory.

Abstract: A method, apparatus and computer program product for providing a fast re-route of a multicast packet within a network element to an available port associated with a multi-link trunk is presented. A packet is received by a Forwarding Data Unit (FDU) in a data plane of a network element and a determination made that the packet is a multicast packet. The packet is forwarded to all egress FDUs having at least one port associated with at least one receiver of the multicast packet. A lookup is performed by each egress FDU in a synchronized local port state database to find a port for each receiver that is in an UP state. The packet is forwarded out the port to a receiver when the port is in the UP state and dropped when the port is in the DOWN state.

Abstract: A method, apparatus and computer program product for providing fast reroute of a packet that may be forwarded on one of a plurality of Equal Cost Multi Path (ECMP) routes through a network is presented. A packet is received by a Forwarding Data Unit (FDU) in a data plane of a network element. The unicast packet is routed at L3, and ECMP is enabled for a next hop for the unicast packet. An ECMP route is selected for forwarding the packet to a destination port. A lookup is performed in a port state table maintained by the FDU to determine an available local port for said ECMP route that is in an UP state for the destination, and if no local port is UP, then a lookup is performed in the port state table to determine an available remote port that is in an UP state for the selected ECMP route.

Abstract: A method for relaying a route request RREQ message by an intermediate node which is connected with at least one node using a tree topology in a mobile communication system including a destination node and a source node which sends the RREQ message to the destination node via at least one intermediate node, to thus establish an optimal route for communications. The RREQ message is received along the route other than the tree route, and the first information is updated using its information. The intermediate node relays to a next intermediate node the RREQ message containing the updated first information.

Abstract: A method and apparatus for dynamic traffic management with packet classification have been disclosed where packet size, variation, and count may be used to select credit or packet based arbitration.

Abstract: A method for connecting a guest browser with a proxy is provided. The method includes sending a registration request for a proxy from a peer to a proxy director and selecting a proxy by the proxy director and sending a proxy name to the peer. The method also includes sending a registration request with a peer name and the proxy name from the peer to a dynamic domain name server (DNS) and registering a dynamic DNS record with a DNS name server by the dynamic DNS to associate the peer name with the proxy name. The dynamic DNS converts the registration request from the peer to standard DNS. When a guest browser wants to connect to the peer, a standard DNS look-up is performed for the peer name at the DNS name server, which provides information regarding proxy connection.

Abstract: A method and an apparatus for advertising border connection information of autonomous system are disclosed. Moreover, the method includes: establishing and maintaining, by a border node of the autonomous system, the border connection information of the autonomous system; flooding the border connection information within the autonomous system; and receiving, by nodes of the autonomous system, the border connection information. The method and the apparatus for advertising border connection information of autonomous system of embodiments of the present invention may adapt to dynamic change of network topology, and dynamically advertise the border connection information of the autonomous system within the system in time, so as to optimize networks and improve quality of service of the networks.

Abstract: In an analog signal compression method with digital compression and digital expansion of linear based or sine-based linear signals, a signal coordination point is determined in a bi-adaptive scaleable mV/step and a time/step structured plane. To accomplish this, the linear or sine-based input signal is digitized, the breaks of the digitized linear or sine-based signal are detected, and the time difference and the amplitude difference of two successive breaks of the linear or sine-based signal are determined. This permits time differences and amplitude differences of successive breaks to be value coded as a data word on the basis of adaptive scaleable time-per-step tables and voltage-per-step tables so that the time-per-step tables and the voltage-per-step tables are selected depending on the absolute value of the determined time difference and amplitude difference, thus producing compressed data. An associated expansion method for reconstructing the original analog signal is also disclosed.

Abstract: A method of managing a communications network, managing secure transactions conducted by digital communications devices over a communications network and computer program product therefore. A Back to Back User Agent (B2BUA), for example, receives numerical input from a networked digital communications device, e.g., a Session Initiation Protocol (SIP) device, and determines when and whether the SIP device displays digits entered at the devices. The B2BUA analyzes received digits for an identification (ID) code and selectively couples the SIP devices with a media server capable of providing prompting the SIP devices. In cooperation with the media server, the B2BUA directs replacing sensitive codes (e.g., passwords or Personal Identification Number (PIN)) with placekeepers or suppressing display altogether. After sensitive code input is complete, digit entry display resumes.

Abstract: Noise filtering data compression removes noise differences from successive frames in a video signal. This is accommodated by accessing successive frames corresponding to a video signal. Frequency domain representations, for example first row and first column coefficients in the quantized DCT result matrix, are used to determine whether the block in the current frame should be considered identical to the corresponding block in the previous frame. If such is the case, the block data is rendered identical such as by overwriting one for the other. This removes any noise differential between the corresponding blocks from the successive frames.

Abstract: The invention relates to a scheduler for a TCP/IP based data communication system and a method for the scheduler. The communication system comprises a TCP/IP transmitter and a receiving unit (UE). The scheduler is associated with a Node comprising a rate measuring device for measuring a TCP/IP data rate from the TCP/IP transmitter and a queue buffer device for buffering data segments from the TCP/IP transmitter. The scheduler is arranged to receive information from the rate measuring device regarding the TCP/IP data rate and is arranged to adapt the permitted queue latency to a minimum value when the TCP/IP transmitter is in a slow start mode and to increase the permitted queue latency when the TCP/IP rate has reached a threshold value.

Abstract: A method and apparatus for selective packet discard have been disclosed where two bits are added to a packet to indicate various discard options.

Abstract: After every bus reset operation in an IEEE 1394 network, the network is reconfigured. This involves a table with further station-specific information being created after the bus initialization phase, the tree structure identification phase and the self identification phase. Each network station returns its station-specific information to the requesting network station. In the first phase, all that information which has been received up to a time determined by a first abort criterion is sorted into the table. Next, the still incomplete table is enabled for use by an application program in the requesting network station. In the second phase, the still missing station-specific information is then requested again and is sorted into the table when it is delivered by the stations to which requests have been sent.

Abstract: Data of a transport block set is to be transmitted in a wireless communication system. The wireless communication system uses adaptive modulation and coding and has a physical layer hybrid automatic repeat request mechanism. Segmentation information for potential segmentation of the transport block set is provided. The transport block set is transmitted with a first specified modulation and coding scheme. The transport bock set is received and whether the received transport block set is determined to meet a specified quality. When the specified quality is not met, a repeat request is transmitted. The first specified modulation and coding set is changed to a second specified modulation and coding set. In response to the repeat request, the transmit block set is segmented into a plurality of segments supported by the second specified modulation and coding set in accordance with the provided segmentation information. The segments are transmitted and at least two of the segments are transmitted separately.

Abstract: In one embodiment, each network interface of a network device in a computer network may be classified as either a low-speed interface (e.g., wireless) or a high-speed interface (e.g., wired). Illustratively, then, low-speed interfaces may be configured (identified) as external interfaces to external links and high-speed interfaces may be configured (identified) as internal interfaces to internal links. By executing a multiple spanning tree (MST) protocol at the network device with other network devices in the computer network, network devices interconnected with internal links are in a same MST region and internal links within an MST region are preferred over external links between MST regions.

Abstract: Exemplary embodiments of the invention provide a system and method for providing multicast service in a unicast-based Voice over Internet Protocol (VoIP) system. The system and method include a VoIP call server receiving subnet information from VoIP terminals authenticated by an authentication server, generating multicast group information, and providing the multicast group information to the respective authenticated VoIP terminals. The VoIP call server searches a list of grouped VoIP terminals, selects a VoIP terminal of a corresponding subnet, transmits multicast session information to the selected VoIP terminal to set the VoIP terminal as a relay VoIP terminal, and requests a media server to transmit group message data to the relay VoIP terminal. According to this system and method, it is possible to implement a multicast service in a unicast-based VoIP system without adding additional equipment.