Abstract: Upstream information arriving through a user terminal in a satellite link is efficiently scheduled through a modified Demand Assigned Multiple Access (DAMA) algorithm such that data packets arriving at the user terminal are concatenated to form a larger frame for transmission and the concatenated packet is held in a first queue disposed ahead of a second queue, where the data in the second queue cannot be modified (typically a hardware queue), sufficient to allow the second queue to be emptied. In a specific embodiment, all packets arriving at the user terminal since a prior piggyback request are concatenated so that all currently known packets (up to a preselected limit) are accounted for by each succeeding piggyback request. Since it is desirable to concatenate all packets that arrive at the user terminal since the last piggyback request, the piggyback request according to the invention covers all currently known packets (up to the preselected limit) in the user terminal.

Abstract: In one example embodiment, a system and method is provided that includes establishing a plurality of Pseudo Wire (PW) connections between a first network appliance region and a second network appliance region to transmit data from the first network appliance region to the second network appliance region along an active PW. Further, the method includes disabling the active PW when a failure of the active PW is detected. Additionally, the method may include selecting an inactive PW to become a new active PW such that the data may be transmitted from the first network appliance region to the second network appliance region. Moreover, the method includes switching from the active PW to the new active PW.

Abstract: The present invention enables the monitoring of application layer metrics of data packets for subscribers or groups of subscribers. In one embodiment, an edge routing node, such as an edge router or the like, between an access network and a core network will identify a subscriber associated with the incoming data packets and then identify an application layer policy to apply to the data packets. The application layer policy may identify the application layer metrics to monitor, how to analyze the application layer metrics, and perhaps actions to take in light of identifying certain application layer metrics, as well as identifying how, where, and when to report the application layer metrics, or an aggregation thereof. With the present invention, application layer metrics can be obtained and analyzed in real time on a subscriber-by-subscriber basis.

Abstract: An in-band signaling model media control (MC) terminal for an HPNA network includes a frame classification entity (FCE) and a frame scheduling entity (FSE) and provides end-to-end Quality of Service (QoS) by passing the QoS requirements from higher layers to the lower layers of the HPNA network. The FCE is located at an LLC sublayer of the MC terminal, and receives a data frame from a higher layer of the MC terminal that is part of a QoS stream. The FCE classifies the received data frame for a MAC sublayer of the MC terminal based on QoS information contained in the received data frame, and associates the classified data frame with a QoS stream queue corresponding to a classification of the data frame. The FSE is located at the MAC sublayer of the MC terminal, and schedules transmission of the data frame to a destination for the data frame based on a QoS requirement associated with the QoS stream.

Abstract: A physical layer device includes a serial media independent interface (SMII). The SMII includes a first terminal configured to receive a first data stream. The first data stream is received at the first terminal in accordance with a first frequency. The SMII further includes a transmit circuit configured to (i) sample, on a rising edge of a clock, the first data stream received at the first terminal to generate a second data stream to be transmitted from the physical layer device, and (ii) sample, on a falling edge of the clock, the first data stream received at the first terminal to generate a third data stream to be transmitted from the physical layer device. Each of the second data stream and the third data stream has a second frequency, and the first frequency is twice the second frequency.

Abstract: A network analyzer includes a hardware-based accounting engine that generates accurate statistics for traffic within a computer network. As the network analyzer receives packets, the accounting engine associates the network packets with respective routing prefixes, and updates flow statistics for the routing prefixes. In this manner, the accounting engine maintains accurate flow statistics for all packets received by network analyzer. The network analyzer includes a control unit that generates prefix data to control the granularity of the traffic analysis. The control unit analyzes the flow statistics maintained by the accounting engine, and adaptively updates the set of prefixes to control the granularity of the statistics. The control unit may generate the prefix data as a forwarding tree having resolution nodes. Each node may associate a network prefix with forwarding next hop data, as well as respective analysis control data to enable or disable flow analysis for the prefix.

Abstract: In a signal processor, a sampling arrangement (SH11, S12, SH13, ADC1) samples at least a first signal (YA) and a second signal (UA, VA) so as to obtain sampled first signal (YD1) and a sampled second signal (UD1, VD1), respectively. A folding compensator (LPF11, LPF12, LPF13, SUB11, SUB12, MUX12) compensates for a folding component in the sampled first signal (YD1) on the basis of a spectral portion of the sampled second signal (UD1, VD1) that is substantially free of components that originate from the second signal (UA, VA).

Abstract: A preamble retransmission method in an Evolved Mobile Telecommunications System (E-UMTS) system is provided by which a terminal transmits a Radio Access Channel (RACH) preamble to a base station, the base station compares the received RACH preamble with preset specific criteria and requests retransmission for the RACH preamble to the terminal according to the comparison in order to reduce the probability of data transmission failure due to inaccuracy of time synchronization and to decrease interference with transmissions by other terminals.

Abstract: A bandwidth divider and method for allocating bandwidth between a plurality of packet processors. The bandwidth divider includes a plurality of counters for measuring the bandwidth of data packets transferred from the bandwidth divider to a respective packet processor; and a controller for analyzing the plurality of counters and transferring a data packet to a selected packet processor based on the contents of the counters. The method monitors the bandwidth consumed by the packet processors; determines, based on the bandwidth consumed by the packet processors, which packet processor has consumed the least amount of bandwidth; and allocates a next data packet to the packet processor which has consumed the least amount of bandwidth.

Abstract: A method and apparatus are disclosed for negotiating and managing one or more personalities in a wireless communications system. The method comprises advertising one or more supported initial protocol set identifiers. Furthermore, the method comprises selecting a starting initial protocol set identifier from the advertised initial protocol set identifiers. In addition, the method comprises establishing a session based on the selected starting initial protocol set identifier. The method also comprises establishing a connection between an access terminal and an access network based on the selected initial protocol set identifier.

Abstract: A source terminal measures characteristics of the path at the source terminal itself, produces a characteristics-measurement packet, and transmits the produced characteristics-measurement packet to a relay terminal. Upon receiving the characteristics-measurement packet, the relay terminal measures characteristics of the path at the relay terminal itself, renews the characteristics of the path included in the characteristics-measurement packet using the measured characteristics of the path, and transmits the characteristics of the wireless communication path to the destination terminal. The source terminal produces an admission-request packet and transmits the packet to the destination terminal. Upon receiving the admission-request packet, the destination terminal allows or rejects the traffic quality maintenance request according to the characteristics of the wireless communication path.

Abstract: In a mobile or cellular telecommunications network a single tunnel between nodes 7, 11, 15 and 19 of the network is established to transmit data on a plurality of bearers. Each bearer transmits data relating to a particular service. The respective bearers may be identified by identification data. The identification data may indicate the priority of the data in the particular bearer. The identification data may indicate the DiffServ Service Class, DSSC, as defined in RFC 4594.

Abstract: An apparatus and a method are described for zero packet loss task migration in an network switch in a computer network. The invention relates to active or programmable networks, i.e. networks based on packet switching algorithms and switch configurations which are subject to change. A well-defined protocol enables an intelligent switch to migrate tasks from one forwarding engine to another without any packet loss. This enables the algorithms and configurations of the switch to be updated or modified arbitrarily.

Abstract: Maintenance entities may be defined between customer and provider flow points to allow performance management to take place on an Ethernet network. The maintenance entities may be defined for access link, intra-domain, and inter-domain, and may be defined on a link or service basis. Performance parameters, including availability metrics, may be collected for the maintenance entities. The provision of such availability metrics in an Ethernet based solution to facilitate consistency of service management and operations for carriers transitioning to the Ethernet solution.

Abstract: A base station selectively communicates with terminals using first and second separately allocated frequency bands, e.g., separate cellular/PCS bands, of a government spectrum allocation based on propagation conditions between the base station and the terminals. The base station may transmit in the first frequency band and receive in the second frequency band during a first time slot and transmit in the second frequency band and receive in the first frequency band during a second time slot. The base station may transmit to a terminal in the first frequency band while receiving from the terminal in the second frequency band during the first time slot and may transmit to the first terminal in the second frequency band while receiving from the first terminal in the first frequency band during the second time slot.

Abstract: In a communication system a procedure is initiated to establish a communication connection for a user equipment. A data bearer may be established via one or more nodes of the communication system for the user equipment before the communication connection procedure is completed. An instruction is signalled to at least one of the nodes associated with the data bearer to prevent transportation of data to or from the user equipment using the data bearer. Based on the instruction, transportation of data to or from the user equipment is prevented until the communication connection establishment procedure has been completed. According to a further aspect, an indication is signalled to at least one of the nodes that the communication connection establishment procedure is completed. Charging record unit associated with charging of data transportation prior said completion are closed in response to the signal.

Abstract: Disclosed is technique for avoiding packet reflection between home agents. According to the technique, a MN 10 includes a home address (HoA1) assigned thereto from a home network 12, and a home address (HoA2) assigned thereto from a home network 14. CoA is further acquired from a foreign network 15. Then, the MN uses the home addresses as care-of addresses, and performs binding-update including HoA1-HoA2 for the HA 12 and binding-update including HoA2-HoA1 as well as HoA2-CoA for the HA 14. A packet transmitted from a CN 16 to HoA1 is encapsulated by the HA 12 and transferred to the HA 14. The HA 14 refers to a source address of the received encapsulated packet and selects CoA as a transfer destination address instead of HoA2 having the same prefix.

Abstract: In an apparatus and method, time-varying signals are processed and encoded via a frequency domain linear prediction (FDLP) scheme to arrive at an all-pole model. Residual signals resulted from the scheme are estimated. Quantized values of the all-pole model and the residual signals are packetized as encoded signals suitable for transmission or storage. To reconstruct the time-varying signals, the encoded signals are decoded. The decoding process is basically the reverse of the encoding process.

Abstract: This system provides for communications between several different types of wireless networks and a mobile node. The system provides various services from a wireless network to a mobile node which is not covered by that wireless network without exhaustion of the mobile node battery. According to this system, the mobile node sends an update message to a currently accessible network node, which transfers the update message to the same or different types of nearby network nodes with incrementing the hop count for every transfer. The different type of network node that has received the update message checks whether the hop count decreases from that previously received, judges that the mobile node is approaching if the hop count decreases, and sends the guide message to the mobile node via the same and different types of networks.

Abstract: A method for wireless communication combines OFDMA resource allocation and power control policies with cooperative relaying techniques. The techniques are preferably implemented in a dense wireless network of power-limited mobile devices assisted by mobile relay devices having superior power supplies. Preferably, MIMO beamforming techniques are used to further increase energy efficiency and spectral efficiency beyond the increases provided by ODFMA cooperative relaying.