Abstract: Discriminating a modulation type based upon a predetermined portion of symbols for a received encoded signal. While receiving the encoded signal, at least a first and a second cumulative soft metrics are generated using the plurality of symbols over a predetermined portion of the received encoded signal. The first cumulative soft metric is compared with the second cumulative soft metric to generate or provide a discriminated modulation type. With the discriminated modulation type, the signal field is decoded, allowing for decoding of the accompanying data payload with the encoded signal.

Abstract: In one embodiment, an endpoint sends messages containing Simple Traversal of User Datagram Protocol (UDP) Through Network Address Translators (NATs) (STUN) requests to traceroute a path to the remote endpoint. The traceroute may be completed through security devices such as NATs and firewalls. Receipt of a STUN response from the remote endpoint signals that one of the traceroute packets reached the remote endpoint whereas the other traceroute packets have elicited error responses from intermediary, on-path routers, allowing these routers to be identified.

Abstract: A hierarchical multi-rate multi-precedence policer is disclosed. The policer discards packets based on assigned precedence levels. When traffic exceeds an available service rate, the policer drops packets of lower precedence levels to make room for packets of higher precedence levels. In certain implementations, the policer also guarantees bandwidth to each level, thus preventing complete loss of lower precedence traffic when there is a large amount of higher precedence traffic.

Abstract: Method and apparatus for processing transport stream packets received from a network for distribution to user terminals is described. In one embodiment, a pair of clock reference packets in the transport stream packets is identified. The pair of clock reference packets includes a first clock reference packet having an output time stamp and a second clock reference packet. A difference between a time value of the second clock reference packet and a time value of the first clock reference packet is computed. An output time stamp for the second clock reference packet is calculated in response to the output time stamp of the first clock reference packet and the difference.

Abstract: Systems and methods for communications between networks that support dispatch communication services are provided. A server is coupled to at least two networks that provide dispatch communications, one of which employs an inactivity timer. When the server determines that the inactivity timer for a dispatch call is about to expire due to, for example, no bearer packets being transmitted, the server will request the floor of the call. The server will then transmit bearer packets for a predetermined amount of time, and then release the floor.

Abstract: A modified ranging request in a broadband communications system. The modified ranging request includes a header, a management message header attached to the header, a management message payload attached to the management message header, and a CRC attached to the management message payload. The management message header enables bandwidth requests to be made by subscriber equipment without contention. The management message header also includes state of health information on the status of a downstream transmission for enabling a central location to determine how to assign subscribers to queues in an adaptive modulation scheme.

Abstract: Techniques are provided for controlling overload conditions using two values; an acceptance rate fraction allowed value and an occupancy fraction allowed value. The inventive techniques allow quick response to the sudden onset of overload conditions, are robust enough to be used when processor speeds are increased and compare favorably to known techniques.

Abstract: Methods, apparatuses, and systems to determine whether a transmission signal block was fully transmitted are described herein. The determination may be made at least in part by calculating one or more bit error probabilities for one or more to be transmitted bursts of the transmission signal block.

Abstract: A method for efficiently scheduling virtual resource blocks to physical resource blocks is disclosed. In a wireless mobile communication system that supports a resource block group (RBG) allocation scheme, for distributed mapping of consecutively allocated virtual resource blocks to physical resource blocks, there is proposed a mapping method capable of increasing the number of distributed virtual resource blocks to a maximum while satisfying gap limitations, when the length of the physical resource blocks is different from the length of the distributed virtual resource blocks. Also, the number of distributed virtual resource blocks and the structure of an interleaver are limited for efficient scheduling.

Abstract: Accordingly, one embodiment of the invention provides a method for testing a communications link. The method includes establishing a connection over the communications link and completing link training over the communications link. Additional testing is now performed over the communications link. Assuming successful completion of the additional testing, it is reported to a network manager that link training has completed. This then allows use of the link for network communications to commence.

Abstract: When a command packet for an image forming apparatus is received, the image forming apparatus extracts information for specifying a source from the received packet, specifies the user who sends the command from the information, and decides the presence of the right to execute the command. When the user has the right, the command is received. When the user does not have the right, the command is not received. Thereby, an unintentional access from an outsider is rejected so that confidential information can be prevented from leaking.

Abstract: The invention is concerned with the transmission of streaming scalable data, particularly video data, through lossy communication channels, for applications in which limited retransmission is possible, and the associated reception and decoding of transmitted data. The PET (Priority Encoding Transmission) framework is used and the invention exploits both unequal error protection and limited retransmission. Each element in the scalable representation of each frame can be transmitted in one or both of two transmission slots, depending on the availability of the data received from the first of the two transmission slots. An optimization algorithm determines the level of protection which should be assigned to each element in each slot, subject to transmission bandwidth constraints.

Abstract: According to some embodiments, a Gigabit Ethernet link is maintained with a link partner using less than four channels. Embodiments may also establish the Gigabit Ethernet link using four channels, determine that the link is idle, and terminate communication with the link partner over at least one of the four channels.

Abstract: A method for cable diagnostics in a network includes performing a test to determine initial state information for each of a plurality of lines coupled to a switch and storing the initial state information in a database. When a change in the state of a line is detected, the test is re-run to determine new state information of the line. The new state information is stored in the database and a message that identifies the change in state and a likely cause of the state change is issued to a network operator. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.

Abstract: A system for determining reachablity of a neighboring node from a node. A packet is received over a network by node. The packet has a destination address of a node other than the receiving node. The node reads a source address from the packet. The node then determines whether the source address is for a neighboring node in which the node has an interest. The node then determines whether the packet indicates a forward link from the node to the neighboring node. Reachablity information for the neighboring node is then stored in a memory responsive to a determination of the forward link.

Abstract: A communication terminal device performs communication based on a communication protocol defined so that first identification information assigned to the device is transmitted to and received from a communication party. The device includes an identification information generating section for detecting, based on information unique to the device, second identification information different from the first identification information, a storage section for storing a table representing a correspondence between the generated second identification information and the type of the device, and a control section for controlling the storage section so that communication with the communication party is established based on the table.

Abstract: The present invention is related to a method to forward an Ethernet packet in an Ethernet based access network. It comprises the step of receiving the Ethernet packet at a network access node being part of the access network and further the step of transforming at the network access node a first Ethernet MAC address contained in the Ethernet packet into a second Ethernet MAC address. Either the first or the second Ethernet MAC address comprises subscriber or subscriber line identification. Subsequently the step of continuing the communication protocol is performed.

Abstract: A system and method for preventing unauthorized access to a website's sensitive information in which a website web server is located on a public network with a public IP address and known port number, but only performs a listening function. The responding function is located on a separate device on a private network with a private and dynamic IP address and having a randomly assigned port number. The responder has no listening sockets (open ports expecting to receive from client application) and therefore does not listen to the public network, and therefore is not accessible to unauthorized access, much in the way that a private user's PC is not accessible to unauthorized access. The web server having the listening function does not initiate connection with the device having the responding function because its private IP address is unreachable from the public network and unknown, even to the web server, and by virtue of the fact that there are no listening sockets to accept any requests.

Abstract: A process control method and system including partitioning transmit decisions and certain measurements into one logical entity (Data Plane) and partitioning algorithm computation to update transmit probabilities into a second logical entity (Control Plane), the two entities periodically communicating fresh measurements from Data Plane to Control Plane and adjusted transmit probabilities from Control Plane to Data Plane. The transmit probability may be used in transmit/discard decisions of packets or instructions exercised at every arrival of a packet or instruction. In an alternative embodiment, the transmit probability may be used in transmit/delay decisions of awaiting instructions or packets exercised at every service event.

Abstract: An apparatus and method for performing automated testing and trouble isolation of a communications link in an access network is described. Communications link testing may occur without taking the communications link out of service for the duration of the test.