Abstract: A method (500) and a mobile station (160) for controlling bearer assignment are described herein. In a wireless communication system (100), a core network (210) is configured to provide communication services to the mobile station (160). The mobile station (160) may detect a resource conflict associated with a communication service within the mobile station (160). Upon detecting the resource conflict, the mobile station (160) may determine a condition of the resource conflict suggesting to delay a bearer assignment for the communication service. Based on the condition of the resource conflict, the mobile station (160) may transmit a request associated with the bearer assignment to the core network (210).

Abstract: Power control methods and apparatus for use in a sectorized cell of an OFDM communications system are described. Each sector of a cell uses the same frequencies and transmission times and is synchronized with the other sectors in the cell in terms of tone frequencies used at any given time and symbol transmission times. Tones are allocated to channels in each cell in the same manner so that each channel in a sector has a corresponding channel in another sector. Power differences between channels in different sectors are maintained to be within a pre-selected power difference. Different channels in a cell are assigned different power levels. Wireless terminals are assigned to channels based on channel feedback information. Wireless terminals with poor channel conditions are allocated to higher power channels than wireless terminals with good channel conditions. Lower power channels often include more tones per symbol time than high power channels.

Abstract: A method in a mobile wireless communications network including sending (210) a reselection communication from a mobile station to a network, and receiving (220) from the network in response to the reselection communication, cell reselection assistance, for example, a new cell assignment.

Abstract: An apparatus and method for controlling the transmission of data packets from a base station in a wireless network to a plurality of mobile stations in a coverage area of the wireless network. The apparatus comprises a transmission scheduler for accessing a plurality of data packets received from a plurality of user devices requesting to transmit data packets to the mobile stations. The transmission scheduler receives a plurality of physical parameters associated with the data packets and calculates a plurality of scheduled priority values. Each of the scheduled priority values is associated with data packets from one of the requesting user devices. Each scheduled priority value is calculated by summing a plurality of products. Each product is determined by multiplying a variable derived from a physical parameter by a weighting factor.

Abstract: Exploiting the substantive reciprocity of internode channel responses through dynamic, adaptive modification of receive and transmit weights, enables locally enabled global optimization of a multipoint, wireless electromagnetic communications network of communication nodes. Each diversity-channel-capable node uses computationally efficient exploitation of pilot tone data and diversity-adaptive signal processing of the weightings and the signal to further convey optimization and channel information which promote local and thereby network-global efficiency.

Abstract: In a disclosed embodiment, signal levels of the active sectors of an access terminal are compared with the signal level of the current serving sector of the access terminal. Next, a delta credit is accumulated. If a DRC lock bit is available, then an accumulated total credit is authorized to produce an authorized accumulated total credit. Afterwards, a new serving sector is identified from a pool of candidate sectors based on the signal levels of the active sectors and the authorized accumulated total credits.

Abstract: An apparatus and method enhance equalizer performance in multipath fast-fading channels in systems such as those employing GSM EDGE. The enhancement is achieved via computationally-efficient envelope-fade tracking that tracks a collective amplitude variation of a multipath channel. The envelope-fade tracking can be used in combination with an Automatic Frequency Compensation (AFC) phase tracker. Parameters, such as the order and the step size of the envelope fade tracker and the AFC, can be optimized independently.

Abstract: An apparatus and method for providing wireless communication for a Programmable Logic Controller (PLC). The PLC includes a central processing unit (CPU) card mounted on the backplane of the PLC, a CPU mounted on the CPU card and a means for wireless radio frequency communication coupled to the CPU so that the means for radio frequency communication and CPU communicate without using the PLC module bus.

Abstract: A cyclic prioritized multiple access (CPMA) method is disclosed which includes Fixed Deterministic Post-Backoff. Fixed deterministic post-backoff reduces conflicts between access points of overlapping cells. Contention-free sessions (CFSs) can be generated, one from each overlapping cell. Each active access point engages in a fixed deterministic post-backoff. A fixed deterministic backoff delay (Bkoff times a fixed number of idle time slots) is used by all access points, with the value of Bkoff being greater than the number of overlapping cells. The Bkoff should be large enough to enable the traffic that needs to be accommodated by the channel. Each access point has a backoff timer that is counted down using the shortest interframe space possible, typically the Priority Interframe Space (PIFS). A contention-free session (CFS) is initiated when the backoff timer expires, and it is then reset to the value of Bkoff to start a new cycle.

Abstract: A method for maintaining a quality of service in a wireless communication network is introduced. A reservation is created in a first data path between a home agent and a first foreign agent for data flow between the home agent and a wireless terminal. When the wireless terminal associates with a second foreign agent, a quality of service supportive second data path may be created between the first foreign agent and the second foreign agent. The data flow may be routed over the first and second data paths to maintain the quality of service for the data flow. A wireless communication network may include first downstream and reverse tunnels coupling a home agent and a first foreign agent, each tunnel having a reservation to maintain a quality of service. Second downstream and reverse tunnels may couple a home agent and a second foreign agent.

Abstract: A system and method provides a routing optimization proxy in an IP network. A secure association is established between a corresponding node and the routing optimization proxy. An authentication procedure is performed for binding updates between the mobile node and the corresponding node. Packets from the corresponding node to the mobile node are addressed by the routing optimization proxy. Routes taken by the packets may be optimized.

Abstract: The present invention provides improved quality of service through data transmission rate control in a network. Data rate control may be in the downlink or uplink direction and may be statically or dynamically configured. Rate control may be implemented at varying points in the network including but not limited to at the wireless host, at the access point, at a separate device such as a server or at a separate location within the network. In one example of the present invention, a rate enforcement function is provided for identifying data packets to be enforced or identifying mapping between each packet and corresponding access point. Also, a rate decision function is also provided for determining the data rate to be enforced for each of the access points or each of the wireless hosts.

Abstract: A method and apparatus of providing communications in a networks with dynamic topology is disclosed in which data is carried by software agents which operate autonomously and independently of global network information.

Abstract: The system of the present invention enables a user moving with a terminal to utilize multiple access points located at mutually separate spots and thereby efficiently acquire a desired Web content. The user of a terminal 50 or 60 moves from one free spot (first communication area AR1) to another free spot (second communication area AR2). Prior to the movement, the user of the terminal 50 or 60 gains off-line access to an access point 20 in the first communication area AR1 and reserves acquisition of a desired Web content. The access point 20 accepts the reservation and transmits reservation information to another access point 120 in the second communication area AR2. The access point 120 gains on-line access to a Web server based on the received reservation information and acquires the reserved Web content. After the move, the user of the terminal 50 or 60 gains off-line access to the access point 120 and picks up the desired Web content.

Abstract: This invention discloses a local area network including a hub, a plurality of nodes, communication cabling connecting the plurality of nodes to the hub for providing data communication, and a power supply distributor operative to provide at least some operating power to at least some of the plurality of nodes via the communication cabling.

Abstract: A method and apparatus for detecting discontinued transmission (DTX) frames in data frames received over a link or channel, is described, where a DTX frame is a frame that does not carry data and which is transmitted with zero power over the link or channel. The method and apparatus determines whether a received data frame is a DTX frame based on a plurality of metrics. Based on the metrics, the method and apparatus may effectively discriminate a case where a data frame is received as an erasure (e.g., data frame received with errors), and a case where a transmitted data frame is received as a DTX frame.

Abstract: The invention provides a composite high-frequency part (10) decreased in the number of switching elements, usable in information terminal devices, compacted, reduced in power consumption and simplified in circuit, the composite high-frequency part (10) being adapted for transmitting and receiving a first signal and a second signal which are different infrequency band, the part comprising an antenna (12); a receiving unit (20) comprising a first receiving port Rx1 for receiving the first signal, a second receiving port Rx2 for receiving the second signal, and a diplexer (22) connected to the receiving ports for sorting signals into the first signal and the second signal; a transmitting unit (30) comprising a first transmitting port Tx1 for transmitting the first signal, a second transmitting port Tx2 for transmitting the second signal, and a diplexer (32) connected to the transmitting ports for combining the first signal and the second signal; and a switch (16) switchable so as to connect the diplexer of one o

Abstract: A method and system provide routing of signals through a communications network. A transmitted signal is received. The signal has an associated parameter that is monitored as the signal is received. The parameter indicates the extent to which prior retransmission of the signal has occurred. The signal is retransmitted only if its parameter satisfies at least one predetermined criterion.

Abstract: An automatic system for the provisioning, deployment and management of digital subscriber lines (DSL) in a telephone network uses data on loop composition, electromagnetic interference and crosstalk between lines to optimize the performance and correct problems with one or more symmetric and or asymmetric digital subscriber lines in a cable. The system optimizes DSL lines on an individual basis using measurements and data. The optimal transmit power spectral density (PSD) for each DSL can be found in an iterative manner. Starting each DSL with some predetermined starting parameter, the transmit PSD of each DSL is optimized in round-robin fashion. The crosstalk into a given DSL is calculated as the power sum of all transmissions passed through their measured crosstalk couplings. An asymmetric DSL has its transmit PSD optimized by using the “waterfilling” technique.

Abstract: A first IP network and a second IP network are provided with a first router device and a second router device which support MPLS. A transport network is provided with one or more core devices supporting GMPLS. A first edge device and a second edge device which support both MPLS and GMPLS are provided at a boundary between the first and second IP networks and the transport network. A GMPLS path is set between the first and second edge devices. An MPLS path is set between the first and second router devices. The MPLS path tunnels the GMPLS path.

Abstract: Apparatus in one example comprises network controller(s) that serve to communicatively couple first network component with second network component. The first network component sends signaling message for the second network component to one or more of the network controller(s). The signaling message comprises indication of specific network connection(s) usable by the first network component. One or more of the network controller(s) serve to replace the indication of the specific network connection(s) usable by the first network component in the signaling message with wild card network connection information. The one or more of the network controller(s) serve to send the signaling message that comprises the wild card network connection information to the second network component. The wild card network connection information indicates the second network component is allowed to indicate to one or more of the network controller(s) specific network connection(s) usable by the second network component.

Abstract: A method and system for providing voice calls in a macro wireless network includes providing at a router of the micro wireless network an interface for communication with a service node of a macro wireless network coupled to the micro wireless network. The interface is of a same type as is used by a radio access network of the macro wireless network to communicate with the service node. A real-time protocol communication path is established from the interface through a voice module of the service node to a public switch telephone network. Voice traffic is communicated to the public switch telephone network through the interface and the real-time protocol path.

Abstract: An apparatus for using multiple call controllers of voice-band calls is provided. The apparatus comprises: a first protocol endpoint configured to receive at least one first external message from a first call controller and to map the first external message to at least one corresponding first internal call control message; a second protocol endpoint configured to receive at least one second external message from an integrated access device and to map the at least second one external message to at least one corresponding second internal call control message; and a protocol adapter configured to receive the first and the second internal message and to route the first and the second internal message to an appropriate one of the first and second endpoints.

Abstract: The practice and need for active network measurement is well established, however, current tools are not well suited to this task, mostly because the protocols which they employ have not been designed for measurement of the modem Internet. The IP Measurement Protocol (IPMP) is based on packet-probes, and is designed to allow routers to participate in measurements by the insertion of path information as the probe passes between a pair of hosts.

Abstract: A system, method and article of manufacture are provided for updating a switching table in a switch fabric. In general, one or more status packets are received by a switch fabric component without handshaking between the transmitting source(s) and the receiving switch fabric component. Each status packet includes information relating to a status of an output port. A switching table is then updated based on the status information of the received status packet.

Abstract: A multi-port network unit for use in a cascade system of network units sends from a cascade port a packet including a special header having a source port ID, a destination port ID and a ‘destination port known’ field. The port IDs identify both a unit and a port within a unit. A routing database is set up, optionally by a discovery protocol, in terms of ports and either destination units (within the cascade) or source units (within the cascade). The database includes a mesh table, indicating from which cascade port a packet with a known destination port ID should be forwarded, without needing a fresh look-up. The database also includes a multicast exclusion table which allows ingress of packets with source unit IDs matched to an ingress port. The scheme allows a general mesh type of cascade while dynamically preventing closed loops.

Abstract: A data processor that increases transmission efficiency. The data processor communicates data to and from a host computer via an interface with a packet including a packet ID. The data processor includes a packet recognition circuit for receiving the packet including the packet ID from the host computer and recognizing the type of the packet from the packet ID. A packet length measuring circuit measures packet length of the packet received from the host computer and determines whether the measured packet length is in accordance with the packet type recognized by the packet determination circuit.

Abstract: The practice and need for active network measurement is well established, however, current tools are not well suited to this task, mostly because the protocols which they employ have not been designed for measurement of the modern Internet. The IP Measurement Protocol (IPMP) is based on packet-probes, and is designed to allow routers to participate in measurements by the insertion of path information as the probe passes between a pair of hosts.

Abstract: In a method and an apparatus for frame transfer which can flexibly and individually set a normally-transferred frame and a monitored frame, the monitored frame having unique in-device information and the normally-transferred frame are generated from a received frame, and then a path is established corresponding to these frames. Also, the same local switch is arranged on both sides of a network processor, a monitoring function is realized by looping back a frame determined to be monitored in the network processor to the network processor through the local switch, and two frames looped back to the network processor are respectively processed into the normally-transferred frame and a CPU-transferred frame to be transferred to the switch portion.

Abstract: A wireless electronic device includes a first application to output a first packet through a first virtual interface as a wireless electronic device moves from a home subnetwork to a foreign subnetwork. The wireless electronic device also includes a second application utilizing the Mobile Internet Protocol (Mobile IP protocol) to output a second packet through a second interface as the wireless electronic device moves from the home subnetwork to the foreign subnetwork. A common physical interface is tied to the first virtual interface and the second interface of the wireless electronic device, wherein the physical interface of the wireless electronic device receives the first packet and the second packet, and outputs the first packet and the second packet from the wireless electronic device after the wireless electronic device has moved.

Abstract: This invention discloses a local area network including a hub, a plurality of nodes, communication cabling connecting the plurality of nodes to the hub for providing data communication, and a power supply distributor operative to provide at least some operating power to at least some of the plurality of nodes via the communication cabling.

Abstract: A packet-forwarding engine (PFE) of a multiprocessor system uses an array of flow classification block (FCB) indices to multicast a packet. Packets are received and buffered in external memory. In one embodiment, when a multicast packet is identified, a bit is set in a packet descriptor and an FCB index is generated and sent with a null-packet to the egress processors which generate multiple descriptors with different indices for each instance of multicasting. All the descriptors may point to the same buffer in the external memory, which stores the multicast packet. A DMA engine reads from the same buffer multiple times and egress processors may access an appropriate transform control block (TCB) index so that the proper headers may be installed on the outgoing packet. The buffer may be released after the last time the packet is read by setting a particular bit of the FCB index.

Abstract: End-to-end data transfer between computing platforms in a transport control protocol (TCP) environment is improved by restricting which packets are stored in a receive memory of an input/output (I/O) circuit. In one embodiment, received packets are examined as to type, and the number of packets stored in the receive memory is monitored. If the number of stored packets exceeds a threshold value, then subsequently received data packets are discarded, whereas latency-sensitive priority data such as acknowledgements (ACKs) are retained in the receive memory, until the number of stored packets is reduced. Various methods, as well as application of the circuit to a system and to a machine-readable article, are also described.

Abstract: A classification search engine for the application of classification rules to a data packet comprises a rules engine for applying a succession of rules, each rule including an operating code. At least some rules are each a single rule of which the operating code specifies a respective portion of the packet, such as a longword, for the extraction of data for the application of the respective rule. Each single rule includes a mask field for controlling the application of the single rule to the data. Other rules are multiple rules of which the operating codes identifies the rule as a multiple rule and which includes a mask for controlling the application of the multiple rule to the results of the application of a multiplicity of single rules to the packet. The operating code for a single rule specifies a pre-determined packet type and a decoder will determine whether a packet conforms to this type (which may be specific or generic) before allowing the application of the rule to the packet.

Abstract: Currently data transmission over the Internet between two client computers where both client computers are protected by firewalls is problematic, since firewalls block incoming packets. A method is provided for permitting packet based data transmission between a first client computer C1 protected by a first NAPT or NAT firewall and a second client computer C2 protected by a second NAPT or NAT firewall to traverse the first and the second firewalls. The method can also be applied to other devices, such as routers, using NAT or NAPT.

Abstract: A method for processing session information of an Internet protocol voice call system using a session initiation protocol (SIP), extracting session information by parsing a SIP Session Protocol header (SIPSP Hdr) only without parsing a session initiation message, by stipulating a session protocol layer in the session initiation protocol and attaching a header of the session protocol layer to the session initiation message, thereby performing communication between a client and a server. The session protocol layer being formed between a UDP (User Datagram Protocol) layer and an SIP application layer.

Abstract: In a wireless packet switching telecommunications network, voice services are provided by having a compressor/decompressor in each mobile station to provide each voice packet with a compressed header. Voice data and signalling data are sent separately and in different data formats to the air interface. The compressed header may be an M bit and a cyclically reset timeclick_number, which is decompressed by use of a wallclock which counts reset cycles to reinstate the voice packet headers. Alternatively, RTP agents are provided at the compression and decompression points, and voice packets are sent without headers over a “high quality” network such as a frame relay or ATM network. Compression state of a voice packet header can be established by sending call setup information over an out-of-band channel between compression points in a mobile station and in the network.

Abstract: The present invention relates generally to a data communication system, a virtual interworking trunk interface within a device to form a universal virtual private network, and methods of operating a virtual private network. In a particular embodiment, the data communication system includes a first portion of a virtual private network, a second portion of the virtual private network, a virtual switch instance associated with the first portion of the virtual private network, a virtual router instance associated with the second portion of the virtual private network, and a virtual interworking trunk interface coupled to the virtual switch instance and to the virtual router instance.

Abstract: A layer 2 switch enables communication between different layer 2 networks by rewriting an expansion VLAN tag according to a network of a frame transfer destination, as well as producing the same effect, by rewriting an expansion VLAN tag, as that obtained by applying expansion VLAN tags to the third and the following stages.

Abstract: System and method for balancing load among access points in a LAN are disclosed. Each access point has a SSID. After resetting an access point, the access point entering a SSID hidden state for hiding its SSID so as to prohibit mobile stations from accessing the access point. When in the SSID hidden state, an access point enters into a SSID showing state for showing its SSID and for enabling mobile stations to couple to the access point if no show-SSID-rejection frame is received. When in the SSID showing state, an access point enters into a SSID pre-hiding state for showing its SSID if the show-SSID-rejection frame is received. When in the SSID pre-hiding state, an access point enters into the SSID hidden state if the show-SSID-rejection frame is received, otherwise the first access point entering into the SSID showing state.

Abstract: An Address Resolution Protocol (ARP) request is received at a gateway coupled to a first local network from a first host also coupled to the first local network. The ARP request includes a destination IP address of a second host coupled to a second local network. Also, a source IP address of the first host and the destination IP address are within the same IP address sub-network. A local network address of the gateway is then sent to the first host in reply to the ARP request, based on an entry for the destination IP address in an ARP proxy table stored on the gateway. A packet is subsequently acquired from the first host addressed to the second host. The packet's header includes the source IP address and the destination IP address. Finally the packet is transmitted toward the second host.

Abstract: An interface for a private IP network interfaces flows of packets between gateway controllers and external media gateways. It has a network address translator and an IPsec device for maintaining secure paths to the external devices. A path identifier records which of the packet flows corresponds to which path. It is incorporated in the packet header, and means that the same interface can be used to couple many different external gateways, and interface them with many of the gateway controllers. Widespread deployment of such interfaces in anonymisers to achieve hiding of device addresses and network topology, as well as the reduction in use of expensive registered addresses is facilitated. By sending the path identifier in the packet, the IPsec device and the address translator can be loosely coupled devices, so standard readily available devices can be used.

Abstract: The inventive method allows integrated communications in a telecommunications network, which combines a Mobile Telecommunications Network (PLMN) and at least an other, wired packet switching or circuit switched network (PSTN/ISDN, INTERNET), with a subscriber's Mobile Station (MS) designed to operate in the Mobile Telecommunications Network (PLMN) and a second communication terminal (IP-T; IP-MS; SC-T) of the subscriber designed to operate in the other or one of the other networks PSTN/ISDN, INTERNET and with an extended Mobile Services Switching Center (MSCX) that over a gateway (IP-GW) connects to the packet switching network (INTERNET).

Abstract: A logical star architecture imposed on an underlying non-star network, for example a Virtual Path Ring (VPR), enhances a mesh protocol with an automatic method for Virtual Path ID (VPI) generation. The VPIs are used by the mesh protocol's inherent routing function to effect automatic configuration at installation, automatic reconfiguration at node updates, and automatic reconfiguration for protection switching. The imposition of the logical star architecture on a VPR reduces node-to-node switching costs (e.g., delay, as well as memory and processing costs) since all nodes in a logical star topology are at most two logical hops away. The logical star also conserves virtual path address space relative to a fully configured ring. Additionally, the imposition of the logical star architecture allows existing star functions to be deployed on the underlying network. Finally, when the underlying architecture is a ring, the protection advantages of ring networks can be preserved.

Abstract: A system, device, and method for supporting multiple virtual private networks in an MPOA/NHRP communication network involves encoding a Virtual Private Network (VPN) identifier in certain MPOA/NHRP control messages in order to associate those MPOA/NHRP control messages with a particular VPN, and using an in-band signaling technique to add/remove VPNs to/from a connection. Packets from multiple VPNs are multiplexed over the connection. Each packet is associated with a particular VPN. If packets do not inherently include information from which the VPN can be ascertained, then a VPN identifier is encoded in the packet. The VPN identifier may be encoded in the packet via a tagging mechanism, in which each VPN is associated with a unique tag, and a tag is included in each packet. The VPN identifier may alternatively be encoded in the packet by including the VPN identifier in the packet, for example, in a header (such as an LLC/SNAP header) within the packet.

Abstract: A system and method of arbitrating data return between simultaneous replies while maintaining priority over later replies is provided. The method includes receiving data in a plurality of priority buffers, detecting when two or more of the buffers are ready to read, storing unique identifications of the read-ready buffers in an order queue according to a priority of the buffer in which they are stored, and reading the unique identifications in the order queue in a first-in-first-out order.

Abstract: Systems and methods that provide receive queue provisioning are provided. In one embodiment, a communications system may include, for example, a first queue pair (QP), a second QP and a general pool. The first QP may be associated with a first connection and may include, for example, a first send queue (SQ). The second QP may be associated with a second connection and may include, for example, a second SQ. The general pool may include, for example, a shared receive queue (SRQ) that may be shared, for example, by the first QP and the second QP.

Abstract: A storage system capable of restoring data even if packets have been lost in exchanges of the data between storage apparatus each conforming to an iSCSI protocol adopting an FEC technique. In a storage system comprising storage apparatus each conforming to an iSCSI protocol adopting an FEC technique, each of the storage apparatus is provided with an FEC function and, when data is transmitted from an iSCSI layer to another iSCSI layer, the state of an FEC process and a redundancy of the data transmission are changed to values suitable for a transmission destination prior to the transmission so that the data can be restored at the destination of transmission.

Abstract: A digital filter of a mobile communication system and an operating method thereof for processing digital signals inputted through plural channels: a first switch outputting digital signals, which are inputted through a plurality of channel paths, in a predetermined order with multiple rate; a filter unit processing signals inputted from the first switch in a poly-phase method; a second switch outputting output signals of the filter unit after dividing them by channels; and a clock unit for supplying clock signals to the first switch, the filter unit and the second switch. The digital filter of multi-channels can be integrated/miniaturized with one component and the filter processing rate can be improved.

Abstract: Aspects of the invention provide a method and system for a communication bus for resetting one or more devices connected to the bus. The transceiver bus (620) may include a single serial data line (616), a single serial clock line (614) and a single reset line (612). A status of a slave device coupled to the transceiver bus (620) may be determined by a master device. Based on the status of the slave device, the master device may execute a forced reset or a normal reset. In a case where a device may be unresponsive, the master device may execute a forced reset. Additionally, in a case where a device is responsive but requires resetting, the master device may execute a normal reset and selectively reset a slave device requiring reset.