Abstract: A method for processing signals in a communication system is disclosed and may include pipelining processing of a received HSDPA bitstream within a single chip. The pipelining may include calculating a memory address for a current portion of a plurality of information bits in the received HSDPA bitstream, while storing on-chip, a portion of the plurality of information bits in the received HSDPA bitstream that is subsequent to the current portion. A portion of the plurality of information bits in the received HSDPA bitstream that is previous to the current portion may be decoded during the calculating and storing. The calculation of the memory address for the current portion of the plurality of information bits may be achieved without the use of a buffer. Processing of the plurality of information bits in the received HSDPA bitstream may be partitioned into a functional data processing path and functional address processing path.

Abstract: System and Method for providing access to multiple wireless service providers (WSPs) on a shared network infrastructure. The system includes a plurality of access points (Aps) coupled to a network which may be distributed in airports, mass-transit stations, businesses, etc. The network may couple to a wide area network, such as the Internet. Each AP may include a plurality of virtual Aps (VAPs), each corresponding to a WSP. A portable computing device (PCD) of a user stores identification information indicating a WSP of a plurality of possible WSPs, and which may include an access level of the user. Each AP “listens for” or detects identification information associated with numerous WSPs. When the AP receives the identification information from the PCD, it determines the VAP/WSP for the PCD using the identification information. Network access is then provided to the PCD through the determined WSP at the determined access level.

Abstract: A form of multicast, referred to as “on-demand multicast,” provides a methodology that allows for “on demand” multicasting of data. On-demand multicast allows clients to join or leave a transmission at any point. There is no transmission session start or end time—the session is continuously available, although data is not necessarily continuously transmitted. Data blocks missed by late-joining clients are retransmitted per amalgamated client requests through multiple transmission cycles until all clients that have joined the transmission session receive all content. Once a client has received all data blocks comprising the content for the session, the client may exit the ongoing session.

Abstract: A system and method to provide node-to-node connectivity in a communications network are disclosed. A virtual connection is established between a source node coupled to a client and a destination node within the connection-oriented network using standards-based signaling. A communication session is then activated between the client and the destination node on the virtual connection.

Abstract: A method for routing packets sent from a user to the internet is provided for systems in which the user is connected to a private network. The method includes: extracting a source network address from the packet; using said source network address to retrieve a user profile for the user; examining said user profile to determine whether to route the packet through the private network or to route the packet directly to the Internet; and routing said packet according to said profile. This allows a user or network provider to choose whether to route packets destined for the Internet directly to the Internet rather than through the private network, thus preventing excessive network traffic on the private network.

Abstract: A method and apparatus for enhanced Internet telephony ensures that communication between a source and destination is not interrupted by common network address translation. According to one aspect of the invention, communication may continue through a router that employs network address translation.

Abstract: A radio communication system includes a plurality of radio communication terminals, in which a first radio communication terminal stores, in a first field contained in a header of a radio communication packet, address information indicating at least one radio communication terminal to which the radio communication packet is directly transmitted, and a second terminal relays the radio communication packet with reference to the address information stored in the first field. The header of the radio communication packet includes a second field which stores address information indicating a final destination terminal and a third field which stores address information indicating the first terminal as a sending source.

Abstract: A method that involves recognizing an incoming FAX call at a destination edge node, the destination edge node supportive of at least two FAX transport manners. A first control packet is sent from the destination edge node to an originating edge node that effectively requests transmission of the FAX call according to one of the FAX transport manners. A second control packet is sent from the originating edge node to the destination edge node that effectively confirms or refuses to confirm transmission of the FAX call according to one of the FAX transport manners.

Abstract: A communications system improves performance of detecting a signal having an indication of a request to change communications states by making at least two positive identifications of the request in a given time frame. The system may further improve performance by applying a difference in power levels for a non-request state (i.e., steady state or ‘control hold’ state) versus a request state (i.e., ‘request to change’ state). In one particular application, a base station determines a request to change communications states with a reasonably high probability of detection and a reasonably low probability of false detection. The system has a reduced number of erroneous communications states, such as erroneous traffic channel allocations. The detection technique is compatible with 1xEV-DV systems and I-CDMA systems, but general enough to support systems employing various other communications protocols used in wired and wireless communications systems.

Abstract: An improved method for facilitating handoff between an asynchronous and a synchronous base station. A method for determining a pilot channel PN offset of a pilot channel transmitted by a wireless base station. In a first embodiment, the method includes correlating a PN sequence with a received pilot signal to acquire a PN frame timing, receiving at least one search code burst aligned with the PN frame timing, the at least one search code burst signifying the pilot channel PN offset, and comparing the at least one search code burst to a set of codewords, each codeword representing a predetermined PN offset. From the search code bursts, the mobile station is able to quickly determine the PN offset of the transmitting base station, and thereby identify it. Methods for transmitting a complementary set of forward link channels are also disclosed.

Abstract: Emergency call-routing apparatus, and an associated method, for use in a packet-based, telephonic network. An emergency call router is positioned selectably to provide local call handling functionality to a local network that is normally connected by way of an access gateway to the telephonic network whose operation is normally controlled by a softswitch. The apparatus is used when, e.g., a total communication link failure condition occurs between the access gateway and the softswitch. The emergency call router selectably routes calls within the local network to permit continued, local calling functionality in spite of the failure of the communication link. High-priority calls, such as calls placed to an emergency dispatch center, are routed within the local network to a designated, local-network station. And local calls are also selectably routed by the emergency call router. A call priority scheme is also used in the event that call capacity is exceeded.

Abstract: System, computer program and method for determining a transmission path of datagrams in an IP network from a source device to a destination device. The source device receives from a network manager station, a message for retrieving information related to the transmission path of datagrams to the destination device. The message comprises a destination address and a source address. The destination address is an IP address of the destination device, and the source address is an IP address of the network manager device. The source device sends a plurality of probe datagrams to a respective plurality of IP network devices along the transmission path to the destination device. Each probe datagram comprises as destination address, the IP address of the destination device and as source address, the IP address of the network manager station.

Abstract: A method, apparatus and computer program product for limiting Virtual Private Network (VPNv4) prefixes per VPN in an inter-autonomous system environment are presented. A limit on the number of VPNv4 routes per VPN for a Route Distributor (RD) or a group of RDs associated with a VPN is defined, at an Autonomous System Border Router (ASBR). When the number of received routes at the ASBR exceeds the limit, then a soft notification is sent to a neighboring ASBR and routes exceeding the limit are discarded at the ASBR.

Abstract: A transreceiver allows efficient operation in a full or half-duplex TDD or FDD system. The preferred transreceiver includes a common set of filters used for both FDD (Frequency Division Duplex) and TDD (Time Division Duplex) operation in a given range of frequencies thereby reducing circuitry count and implementation costs. Thus, the transreceiver of the present invention can operate in FDD operation or TDD operation.

Abstract: One embodiment disclosed relates to a switching system. The switching system includes first, second, and third sets of switches. The first set of switches is configured with a first instance of meshing software such that the switches in the first set are members of a first mesh domain. The second set of switches is configured with a second instance of the meshing software such that the switches in the second set are members of a second mesh domain. The third set of switches is configured with both the first and second instances of the meshing software such that the switches in the third set are members of both the first and second mesh domains. Another embodiment disclosed relates to a packet switch apparatus executing multiple instances of meshing software. Another embodiment disclosed relates to a method of configuring a switching system having multiple mesh domains.

Abstract: A network monitor includes means for monitoring downstream traffic from a cable modem termination system (CMTS) to a cable modem (CM), means for monitoring upstream traffic from the CM to the CMTS, and means for identifying a data format used by the CMTS and the CM for bi-directional communication.

Abstract: A method for Real-time Transport Protocol (RTP) packet authentication on a packet data network. In particular, the invention relates to a method for preventing toll fraud, privacy compromise, voice quality degradation, or denial of service (DoS) on Voice over IP networks. The Real-time Transport Protocol (RTP) is susceptible to several security attacks, including thirdparty snooping of private conversations, injection of forged content, and introduction or modification of packets to degrade voice quality. The Secure Real-time Transport Protocol (SRTP) provides confidentiality, message authentication, and replay protection for RTP traffic. However, SRTP incurs an additional overhead to verify the HMAC-SHA1 message authentication code for each packet. SRTP+ significantly decrease the verification overhead compared to SRTP and thereby increases the number of faked packets required to mount a successful denial of service attack. SRTP+ provides packet authentication but not integrity.

Abstract: Implementation of communication in a multi-protocol wireless network communication network is performed according to protocols independently selected for forward and reverse communication links. A communication request is made according to predetermined criteria, and a communication link is established responsive to the request. A determination is made of a preferred communication protocol in at least one direction (forward or reverse link). The communication link is established for that direction in accordance with the preferred communication protocol while controlling communication in the other direction independently.

Abstract: Certain exemplary embodiments provide a method for converting data packets based upon IPv4 protocol into data packets based upon IPv6 protocol, said method comprising converting any data packet based upon the IPv4 protocol into a data packet based upon the IPv6 protocol before transmitting it to an IP switched network using information provided by an external server, and converting any data packet based upon the IPv6 protocol provided by said IP switched network into a data packet based upon the IPv4 protocol before transmitting it to a first or second workstation.

Abstract: A method of analyzing a communication network that determines a mean drop rate in a device x by polling each device from a network management computer (NMC) which is in communication with the network, and processing signals in the NMC to determine a drop rate D(x), in accordance with: D(x)=((L+(x)?L?(x))/2, and L(x)=1?A(x) where A(x): the fraction of poll requests from the NMC to device x for which the NMC receives replies (measured over the last M sampling periods), (wherein x must not be broken), D(x): the mean frame drop rate in device x, L(c): NMC's perception of the loss rate to device x and back, L?(x): the NMC's perception of the mean value of L(z) for all devices z connected to device x, closer to the NMC than device x and which are not broken, and L+(x): the NMC's perception of the mean value of L(z) for all devices z connected to device x, further away from the NMC than device x and which are not broken.