Abstract: A gateway device including an access interface to an external network, a trunked interface, and translation logic. The access interface is associated with multiple external source addresses. The trunked interface is interfaced with multiple different virtual local area networks (VLANs), where each VLAN is associated with a corresponding VLAN tag and at least one of potentially overlapping internal source addresses. The translation logic translates between each external source address and each unique combination of internal source address and VLAN tag. A method of network address translation including assigning one of first network addresses to each first device of a first network, dividing the first network into a plurality of VLANs, separating the first devices with the same first network address into different VLANs, and assigning first devices with the same first address to different second network addresses.

Abstract: A method for determining whether a connection event between a base station and a wireless transmit/receive unit (WTRU) should be accepted or rejected, comprises measuring the interference level I0 in a candidate timeslot; measuring the path loss L between the base station and the WTRU; measuring the total transmit power P0 of the base station; determining a thermal noise level ?; determining a fading average signal-to-interference ratio (SIR); and calculating a ratio R, wherein if the ratio R is above a certain threshold the connection event will be accepted and if the call is below the threshold it will be rejected.

Abstract: An improved technique provides location detection using wireless net-works such as Wi-Fi networks in a flexible, configurable manner that allows for variations in the environment and tracks target movement accurately in such an environment. Zones of different relative sizes and sensitivities can be defined, so as to vary the degree of resolution for different parts of the area being detected. Mechanisms are provided to take into account fluctuations in signal strength, and reduce the incidence of false positives resulting from incorrectly detecting zone or location changes due to fluctuations of signal strength. In addition, detection time can be configured for zone entry and/or exit. Self-adjustment based on heuristic analysis can also be implemented. Data can be sent or received based on the physical location as determined by the zone.

Abstract: In connection with a mobile wireless subnetwork having multiple radio network controllers and multiple radio nodes, a session established for an access terminal is associated with a serving radio network controller. The association is maintained as the access terminal moves from the coverage area of one radio node to the coverage area of another radio node within the same subnetwork. Access channel packets are routed from an access terminal having an existing session to the serving radio network controller by determining the IP address of the serving radio network controller using a session identifier.

Abstract: A method of data communication between power line communication (PLC) stations belonging to different PLC cells includes transmitting a station ID of a PLC reception station to a PLC cell bridge (CB) of a first PLC cell to which a PLC transmission station belongs, receiving a group identification (GID) and an encryption key of a second PLC cell to which the PLC reception station belongs from the PLC CB of the first PLC cell, encrypting data to be transmitted using the encryption key of the second PLC cell, and transmitting the station ID of the PLC reception station, the GID of the second PLC cell, and the encrypted data, to the PLC CB of the first PLC cell, and an apparatus to perform the method.

Abstract: A network switching device includes a plurality of ports to receive data frames over a plurality of communication channels. The plurality of ports selectively store the data frames in blocks of a shared memory. A receiving port of the plurality of ports stores a first frame of the data frames in at least one block of the blocks. A forwarding module assigns the first frame to a transmitting port of the plurality of ports for transmission over the respective communication channel of the transmitting port. A counter module stores respective counts for the plurality of ports. The counter module increments the count for the receiving port after the forwarding module assigns the first frame to the transmitting port. The counter module decrements the count for the receiving port after the first frame is transmitted by the transmitting port. The plurality of ports respectively exercise flow control based on a pause threshold and the respective counts.

Abstract: A link aggregation function and maintenance function by MPLS OAM. Identical entry information is stored in plural circuits IF which perform a LA setting. In this way, multiplexing to the same LSP is possible even with different IF. The first network IF is assumed to be OAM ACT, and the second network IF is set to OAM SBY (SBY). OAM frame insertion is performed only by an OAM ACT port. In this way, in an opposite MPLS transmission apparatus, it is possible to prevent CV frame reception above a specified number of frames. Further, a switch forwarding table is set to forward frames from the network side to the first network IF of OAM ACT. The second network IF which was set to OAM SBY does not perform fault detection by CV reception. In this way, incorrect detection of faults due to non-reception of OAM can be prevented.

Abstract: A method for processing packets. The method includes receiving a first packet, wherein the first packet is associated with a first protocol, classifying the first packet using a protocol associated with the first packet, sending the first packet to a first receive ring based on the classification, sending the first packet from the first receive ring to a first virtual network interface card (VNIC) based on an operating mode, sending the first packet from the first VNIC to a first protocol specific virtual network stack (VNS), wherein the first protocol specific VNS is configured to only process packets associated with the first protocol, and processing the first packet by the first protocol specific VNS to obtain a first processed packet.

Abstract: A digital broadcast transmitting/receiving system and a method for processing data are disclosed. The method for processing data may enhance the receiving performance of the receiving system by performing additional coding and multiplexing processes on the traffic information data and transmitting the processed data. Thus, robustness is provided to the traffic information data, thereby enabling the data to respond strongly against the channel environment which is always under constant and vast change.

Abstract: A method for communication via a ring network that includes a plurality of nodes. The method includes receiving at a first node in the ring network a data packet transmitted over a virtual private LAN service (VPLS), the data packet including an identification of the VPLS. The first node reads the identification from the data packet. Responsively to reading the identification, the first node forwards the data packet to at least one second node in the ring network that is associated with the VPLS.

Abstract: A computer implemented method, apparatus, and computer usable program code for screening data packets. A determination is made as to whether a signature of a trusted security element is present in a header of the data packet in response to receiving a data packet. The signature indicates that a previous security action has been performed on the data packet. A security action is performed on the data packet based on the previous security action performed on the data packet in response to the signature of the trusted security element being present.

Abstract: Methods and systems for using counters to monitor port buffers are described. In one embodiment, the method includes receiving data packets into a system port buffer having different queues. Also, counters are associated with the queues. Further, the method includes scanning the counters, in which the counters count the number of dropped data packets associated with an individual queue of the different queues. Moreover, the method includes determining if the number of dropped data packets for an individual queue is greater than a predetermined number. If the number of dropped data packets is greater than the predetermined number, then a message is generated.

Abstract: Synchronization of presence information is established between different presence services. Presence information of each user is stored on the presence server 27 of the presence display system comprising mobile phones. Presence information of the SIP phone system comprising the SIP phone 29 and the SIPG/W (enterprise side) 30 is stored in the SIPG/W (enterprise side) 30. When presence information of the presence server 27 has changed, the presence server 27 notifies the SIPG/W (enterprise side) 30 of the change in presence information via the SIPG/W (mobile communication network side) 31. Conversely, when presence information of the SIP phone system has changed, the SIPG/W (enterprise side) 30 notifies the presence server 27 of the change in presence via the SIPG/W (mobile communication network side) 31.

Abstract: The present invention provides a tunneling apparatus which can perform tunneling without requiring the network to be suspended or requiring the existing configuration of a local network to be modified. The frame sorting part 11 determines whether or not a frame input from a local network through a physical interface is an encapsulated tunnel frame. If such frame is a tunnel frame, the frame sorting part 11 outputs such frame to the decapsulation unit of the tunneling part 13. If such frame is not a tunnel frame, the frame sorting part 11 outputs such frame to at least one of the address resolution unit of the kernel part 12 and the encapsulation unit of the tunneling part, based on the characteristics of such frame.

Abstract: A media gateway (MG) and a packet filtering method thereof are provided to enhance the adaptability of the packet filtering mechanism on the MG. The packet filtering rule for a service instance may be changed dynamically, namely, the MG analyzes the currently transmitted packets of a service instance, obtains the state change of the instance, and then dynamically changes the packet filtering rule of the instance according to the state change of the instance. The present invention extends the property parameters of the H.248 protocol or MGCP protocol and adds a property parameter that indicates the dynamic packet filtering function is enabled or disabled and a property parameter that indicates the service type so that the MGC can enable or disable the packet filtering function for the instance of the specified service type flexibly according to the values of such parameters.

Abstract: A method, system, and computer-readable medium for transmitting voice over multiprotocol label switching is provided. A packet that includes layer 3 and layer 4 headers is received. A label that identifies a label switched path in the packet is inserted, and a stream identifier is generated. The stream identifier is associated with at least a portion of content of the layer 3 and layer 4 headers. The layer 3 and layer 4 headers are removed from the packet, and the stream identifier is inserted into the packet. Additionally, methods, systems, and a computer-readable medium for processing a voice over multiprotocol label switching frame that excludes layer 3 and layer 4 headers are provided.

Abstract: A communications and database delivery service within an internetwork interacts with a service provider and its requestors/customers. A server is maintained for storing requester identifiers and service provider identifiers. A records database is maintained for storing records of digital information for customers of the service provider in accordance with the requester identifiers. An initiation message is received from a requestor over the internetwork. A notification is sent of a requested two-way video session to an IP address corresponding to the service provider. After an acceptance is received from the service provider, signals are provided over the internetwork to enable the two-way video session between respective workstations of the requestor and the service provider. A respective record is retrieved from the records database corresponding to the requester. The respective record is forwarded to the IP address corresponding to the service provider.

Abstract: A method and system access a channel in a wireless network of nodes. A coordinator transmits periodically a beacon, in which time between two consecutive beacons constitute a beacon interval. The coordinator and other nodes transceive a superframe during the beacon interval, in which the superframe begins with an active interval, which is immediately followed by an inactive interval, and in which the active interval begins with a contention free period, which is immediately followed by a contention access period, which is immediately followed by the inactive interval.

Abstract: A method for transmitting a payload encapsulated in a packet from a transmitter to a receiver by using an Automatic Request process, in which: the receiver checks each packet received from the transmitter to detect some potential corrupted received packets the receiver acknowledges the correct or the corrupted reception of each received packet by emitting one or many acknowledgment messages to the transmitter; the transmitter resends the packets that were indicated as corrupted in the received acknowledgment messages. For at least some packets, the transmitter implements an EC-PartARQ error control mechanism including the steps of: defining a sensitive part and a non-sensitive part in the transmitted packet; checking only the sensitive parts in the packets to detect any potential corrupted received packet, a packet being considered as corrupted if the sensitive part has not been correctly received.

Abstract: A method and system for transferring iSCSI protocol data units (“PDUs”) to a host system is provided. The system includes a host bus adapter with a TCP/IP offload engine. The HBA includes, a direct memory access engine operationally coupled to a pool of small buffers and a pool of large buffers, wherein an incoming PDU size is compared to the size of a small buffer and if the PDU fits in the small buffer, then the PDU is placed in the small buffer. If the incoming PDU size is compared to a large buffer size and if the incoming PDU size is less than the large buffer size then the incoming PDU is placed in the large buffer. If the coming PDU size is greater than a large buffer, then the incoming PDU is placed is more than one large buffer and a pointer to a list of large buffers storing the incoming PDU is placed in a small buffer.