Abstract: Uplinked and downlinked transmissions in an interference-limited system, such as a cellular network, are prioritized and authorized by channel quality/data rate to minimize interference.

Abstract: In a technique for priority forwarding, an upper layer protocol that requires priority forwarding includes a priority function that is invoked by a lower layer protocol in order to obtain the priority for a message. The upper layer protocol provides the priority function to the lower layer protocol when the upper layer protocol is installed in the protocol stack. The lower layer protocol invokes the priority function before passing a message to the upper layer protocol in order to determine a priority for the message. The lower layer protocol places the message in the appropriate queue based upon the priority indicator obtained from the upper layer protocol's priority function.

Abstract: A communications bus (300) includes a number of alternate transmission paths (311, 312) between a given source node (301) and respective destination node (305) on a common substrate. The source node (301) receives a signal from a first circuit (309) serviced by the bus (300) while the respective destination node (305) transfers that signal to a second circuit (310) serviced by the bus. The communications bus (300) includes two switching arrangements for switching between the alternate transmission paths (311, 312). A source switching arrangement (318) is interposed between the source node (301) and the respective alternate transmission path (311, 312). This source switching arrangement (318) selectively connects the respective source node (301) to a selected one of the alternate transmission paths (311, 312) and disconnects the source node (301) from each other alternate transmission path.

Abstract: A packet communication charge pre-notification system includes a mobile station, a packet communication network containing a mobile communication network connected to the mobile station by radio, and a terminal connected to the mobile station via the packet communication network. The mobile station has a control unit, counting unit, and display unit. The control unit forms packet data from digital data and transmits the packet data to the terminal via the packet communication network in accordance with transmission permission from the user. The counting unit counts the formed packet data before transmission. The display unit displays a communication charge calculated on the basis of the counting result of the counting unit before the packet data is transmitted.

Abstract: A method to utilize unscheduled bandwidth in a calendar-based VC scheduling scheme by caching a plurality of virtual connections for processing. A plurality of virtual connection addresses are stored in a cache memory. A virtual connection corresponding to one of these addresses is processed if one of the time periods for transmitting on the trunk is liable to be wasted because no cell is available through the normal calendaring algorithm. A VC cache is added to the VC scheduler in “parallel” with the calendar-based scheduler. When the calendar-based scheduler has a time period in which no VC is scheduled for transmission on the trunk, a VC address is obtained from the cache and that VC is processed. What makes this scheme work is the observation that the VCs that have been active will have more cells to transmit.

Abstract: A method, system and computer program product are provided that reduce voice and data over IP (VoIP) packet overhead in an Internet telephony system, and regenerate missing or damaged data in a data packet. A media framer aggregates packets from multiple concurrent calls from several channels into a larger data packet. A transmission control module defines the format for each data packet, and updates and synchronizes header information in the data packets. A single virtual connection transmits data packets and other signals between originating and destination gateways located in the service areas for a caller and called party. System redundancy improves the quality of service by regenerating missing or damaged data in the data packets.

Abstract: A novel method of data packet switching in a data packet switching system having multiple switching devices. The method includes comparing destination address information of a received data packet with current address information maintained in an address table of one of the switching devices, and supplying a match signal to other switching devices when the destination address information matches the current address information. As a result, all other switching devices in the system are informed that the host with the destination address that caused the match signal is not connected to one of their own media ports. The match signal sent to other switching devices in the system is unambiguously associated with the destination address that caused the match. Also, the match signal may uniquely identify the switching device that generates this signal.

Abstract: A method and system for establishing a Virtual Path (VP12) capability in a Frame Relay network wherein frames are transmitted over a plurality of virtual circuits from a first switching node to a second switching node. A control message is transmitter from the first switching node to the second switching node with a Data Link Connection Identifier (DLCI) having a predetermined value indicating the purpose of the control message which is to define a virtual path aggregating at least two virtual circuits selected from multiple virtual circuits. The control message contains the identification of the virtual circuits aggregated in the defined virtual path.

Abstract: The present invention discloses a data transmission apparatus and method for transmitting data between physical layer side device and network layer device, which encapsulating a novel LAPS framing-de-framing into SPE/VC of a HDLC-like frame using a variable SAPI value. The LAPS encapsulation consists of the start Flag Sequence, address field (SAPI, Service Access Point Identifier), control field (0x03), Information field (Ipv4, Ipv6, or PPP protocol data unit), FCS (Frame check sequence) and the ending Flag Sequence, or consists of the start Flag, Address field, Control field, SAPI field (two octets), Information field, FCS field and the ending Flag Sequence. The Flag Sequence (0x7E) identifies the beginning/end of a LAPS frame. The present invention can be used to adapt Internet/Intranet to telecommunication infrastructure, and can be applied to network devices such as core and edge routers, switch devices, IP based network accessing equipment, line cards, and interfacing units used in high speed, e.g.

Abstract: There are provided an apparatus and method for retransmitting data according to a radio link protocol in a mobile communication system. In the method of requesting frame retransmission, a receiver stores the sequence numbers of a plurality of RLP (Radio Link Protocol) frames that are not received from a transmitter and transmits a retransmission request frame including fields that indicate the sequence numbers. Then, the transmitter sequentially transmits the requested RLP frames in the order of the sequence numbers to the receiver. The receiver compares the stored sequence numbers with the sequence numbers of received RLP frames and if it receiver fails to receive one of the requested RLP frames, the receiver requests retransmission of the lost RLP frame upon receipt of an RLP frame of a higher sequence number than the sequence number of the lost RLP frame.

Abstract: The present invention relates to a mobile communication system, and more particularly, to a method for a handoff of a medium rate data call in a mobile communication system. In the present invention, if the pilot strength of the BTS in the active set to which a SCH is not allocated is smaller than the pilot strength of the BTS to which the SCH is not allocated for a predetermined period of time, the mobile station transmits the corresponding information to the base station by means of a PSMM, and the base station performs a handoff of the SCH resource according to the PSMM. In addition, if the base station receives the PSMM from the mobile station, whether or not the SCH is allocated is determined using the pilot strength of the corresponding BTS, reference threshold, and T—ADD. Therefore, frequent handoffs are prevented and the load of the mobile station is reduced because there is no need to compute a SCH reference threshold at every handoff request.

Abstract: The invention relates to a method for displaying the mean modulation error MERRMS of a multiple carrier (OFDM) signal in which: a) The square of the error vector is calculated according to the relation (I) for each actual modulation symbol I of each individual carrier k of the multiple carrier signal; b) this value mk is offset with the content of a storage location of a memory, said storage location being assigned to the same carrier k, which comprises the same number of storage locations as the OFDM signal carrier, according to relation (II) (iteration formula) with A2k,1+1: new measured value (instant 1+1) which should be filed in storage location k of the memory A2; A2k,l+l: previous measured value (instant 1) from storage location k of memory A2; mk: Actual measured error square for carrier k; k: Carrier number within the OFDM spectrum, grows with the frequency, k=0 . . .

Abstract: Association identifiers for identifying, as the flow of a series of services, screen information are imparted to respective screen informations in a tree structure constituting a web service provided by the contents server. The association identifiers are constituted respectively by an identifier “start” representing a start screen of a series of service elements, an identifier “continue” representing a screen located along the way to contemplated information, and an identifier “end” representing a screen of the final contemplated information. When a congested state has occurred in the GW server during operation, the GW server judges the association identifier contained in screen information to be relayed. In this case, for screen information which is in the state of continuation for the series of service elements and, at the same time, the association identifier represents “continue,” the relay of the transfer of service information is continued until an association identifier representing “end” appears.

Abstract: A method time-stamps an electronic message in accordance with information about the time zone in which the intended recipient resides where the message is originally received by a message center in a time zone different from the intended recipient.

Abstract: Substantially accurate estimation of coordinates of a subject network node in a coordinate space is accomplished by considering designated coordinates of other positioned nodes within the network. The designation of coordinates in the coordinate space to such nodes allows the computation of predicted coordinate distances between two network nodes based on the coordinates. By optimizing the network distance errors between measured distances and predicted coordinate distances, the predicted coordinates of a subject node joining the network can be iteratively refined. With these estimated coordinates, the coordinate distance between two points in the space may be computed as a prediction of the network distance between the two corresponding nodes. Furthermore, coordinate-based coordinate estimation lends itself to security precautions to protect against malicious reference nodes or external interference.

Abstract: A multiport device includes a time-stamping component that appends a time-stamp value to voice packets. Output queues use the time-stamp value to monitor the time the packet spends in the output queue. If the packet is in the queue for greater than a predetermined amount of time, a time-stamp control component expedites the processing of the packet. In this manner, jitter introduced into the voice packet by variable length delays in the network device can be controlled.

Abstract: A method of initializing a multi-zone peer-to-peer entertainment and communications network. During normal network operation, data is streamed from one or more entertainment media source nodes to multiple independent other nodes and, then, passed to connected receivers and/or transceivers. The receivers and transceivers may be located in different zones from each other. The zones may be different rooms in a building or house. The initialization sequence is an autonomous process. During initialization, at least one backplane address is assigned to each network hub port and to each local node. One hub port is designated as backplane master. Upon power-up or a reset, a remote scan is initiated, automatically, from the hub ports to the remote nodes. Any remote node requiring an address responds to the remote scan indicating that one or more addresses are needed. Then, nodes requesting addresses enter a contention arbitration phase to select the next requesting node which is assigned addresses next.

Abstract: An improved multicarrier modulation system and method, which has the advantages of both isotropic orthogonal transfer algorithm orthogonal frequency division multiplexing (IOTA OFDM) and scalable advanced modulation (SAM), is introduced. The invention is root raised cosine (RRC) OFDM using the most spectrally efficient RRC filter without sacrificing the compact subchannel spacing of OFDM. The invention further provides an adjacent channel interference (ACI) suppression scheme and a modified RRC for better suppressing ACI of RRC OFDM. The ACI suppression scheme can also be applied to SAM with the modified RRC and to IOTA OFDM with a modified IOTA. The invention greatly improves a major problem of conventional OFDM namely ACI due to the use of a wide subchannel filter. Thus, the invention allows OFDM to meet even the strictest ACI requirements, which was not possible by using a conventional raised cosine windowing method.

Abstract: A dynamically provisioned telecommunications system and methods for using such. Various of the systems include an automated carrier layer that is operable to direct one of at least two access sources to a subscriber line, and an automated service layer that is operable to direct an access request associated with the subscriber line to one of at least two service pools. In some cases, one or more electro-mechanical cross-connects are used to switch network signaling.

Abstract: A multiplexer is provided for making data into a plurality of cells and then for transmitting the plurality of cells through a cell transmission path. The multiplexer includes a first delay-fluctuation adding unit adding a first maximum value of delay fluctuation occurring when the multiplexer transmits the cell, to a predetermined area of the cell; a second delay-fluctuation adding unit adding a second maximum value of delay fluctuation occurring when the multiplexer reproduces the data from the cell, to the predetermined area; a storage unit storing the data; and a data-read control unit controlling reading the data stored in the storage unit by following a maximum value of delay fluctuation stored in the predetermined area. Accordingly, the multiplexer can control absorption of the delay fluctuation individually for each cell transmission path.