Abstract: Source devices, softwares and methods are provided for predicting at a transmitting source how well a specific encoded frame, relative to other frames in a stream, would be reconstructed if it were not available for eventual playout at a receiving destination. If poorly, then the specific encoded frame is packetized and transmitted advantageously with respect to other packets in a stream. The transmitted stream will have higher jitter. Predicting is performed at the source by synthesizing a replicated frame, which emulates how the specific frame would be reconstructed at the destination. Then the replicated frame is compared with the decoded specific frame. The eventual playout will have a higher fidelity to the original, since reconstructed from more critical frames.

Abstract: A SONET demapper includes three desynchronizers, each of which includes a RAM-based, shared digital phase locked loop, shared elastic storage, and twenty-eight divide-by 33/34/44/45 counters. Unlike a conventional desynchronizer which uses separate FIFOs for each of the twenty-eight T1/E1 channels, the elastic storage for each channel is an addressed portion of a shared block of RAM. Each desynchronizer generates a clock for each of the twenty-eight T1/E1 channels based on a FIFO depth count for each channel which is derived from a read pointer, an “effective write pointer”, and the divide-by clock for the channel. Each desynchronizer can desynchronize both T1/E1 signals as well as a combination of these signals. In addition, the invention combines the leak FIFO and desynchronizer FIFO into a single FIFO with an effective write pointer. This eliminates the need to maintain separate counters and pointers for separate FIFOs.

Abstract: The invention relates to implementation of multiple simultaneous calls for a mobile station in a mobile communication system. A common traffic channel (TCH) is allocated to several simultaneous calls (applications 1–n) of the mobile station (MS), so that the calls share the capacity of the common channel. Logical links are established for each call inside a common radio link protocol or link access control protocol, which is established over the common traffic channel between the mobile station (MS) and an interworking function (IWF). The common traffic channel (TCH) is allocated when the first call or calls are set up, and the capacity of the traffic channel is adjusted dynamically during the calls. The capacity of the common traffic channel is increased or the allocated capacity is reallocated when a new call is added to the traffic channel. Correspondingly, the capacity is decreased or the allocated capacity is reallocated when a call is cleared from the common traffic channel.

Abstract: A system and method of reassembling packets from traffic flows in a network element is provided. Each of the packets has at least one data part. The method includes the steps (1) queuing each of the data parts of the packets of traffic flows in a single reassembly queue in a sorted order, the data parts of each of the packets being continuously grouped without data parts of another packet being interleaved therein and (2) reassembling the data parts of each of the packets queued in the single reassembly queue.

Abstract: The invention comprises a system and method for correcting jitter and frame erasure in packet voice communication systems with out severely affecting the voice quality of the signal to be easily noticed by a listener. A packet is retrieved from a buffer, a pitch of the packet is determined, and the pitch of the packet is processed in a manner determinative of whether a next packet has arrived.

Abstract: A radio communication system in which information of a unit length is constituted with a plurality of frames as a set and the information is transmitted/received between a base station and a mobile station. A control section of the base station decides, during a telephone communications, performed between the base station and the mobile station, when an instruction to switch the frequency to a second frequency is received from an upper order network via a transmission/reception section, a time interval for the telephone communication using the second frequency so as not to stride over a boundary of frame sets adjacent to each other.

Abstract: The transmission of ATM, Internet, and satellite communications is unified through international standardized protocol embedment. Global and Local performance optimization are achieved through the combination of combinatorial, dynamic, and probabilistic programming. A simultaneous domino effect of bandwidth conservation, efficiency enhancement, reliability improvement, traffic congestion prevention, delay minimization, and speed multiplication are realized for any digital communication system, particular in Internet. With three levels of error coding in ATM cells, the loss cell recovery and bit integrity are preserved. From its mathematical roots, new combinatorial sets are systematically generated, and applications of the sets are identified. Among the applications, optimal sequences can be produced for multi-user and multi-function communication system designs. Optimality is in terms of maximum possible number of sequences with given sequence length and sequence characteristics.

Abstract: A method used for communicating packets or other information units from a server (11) to a client (15) over a communication path including a packet scheduler (14-1) followed by a bottleneck path (14-2), with the packet scheduler (14-1) having a buffer for holding packets so as not to transmit over the bottleneck path (14-2) at a rate either too high or too low, the method providing that the server (11) communicate to the client (15) sender information indicating the last packet sent to the client (11) by the server (11) and do so via a mechanism by which the sender information is communicated over the bottleneck path (14-2) ahead of substantially all packets already in the buffer.

Abstract: A method for the provision of a defined quality of service in a packet switched communication system with interconnected nodes (N) for the forwarding of data packets is described. The system comprises at least one edge node (EN) for the connection to user equipment (UE) or a further communication system (FS) and for processing data packets. The packets comprise a data field (10) specifying the handling of the packets and the nodes (N) perform a differentiated handling of packets according to said data field (10). The communication system comprises or is connectable to a data base (DB) which contains a record for a user specifying a quality of service. An edge node (EN) which processes a packet for said user is provided with quality parameters from the data base (DB). The edge node (EN) sets the data field (10) specifying the handling of the packet according to the record. Devices and programs to perform the method are also described.

Abstract: An apparatus in a wireless network includes a video encoder for encoding uncompressed video information into packets with variable length of compressed frames, and a decision processor for selecting a partial bandwidth and queuing delay on a wireless channel for each of the packets based on an intended reception quality. Preferably, the queuing delay and partial bandwidth are one of a plurality of distinct queuing delay and partial bandwidth representative of wireless transmission quality of service classes.

Abstract: Enhanced Cable Modem Termination System (CMTS) functionality, including programmable digital domain modulators and demodulators for dynamic channel assignment, is incorporated into Fiber Nodes (FNs) or mini Fiber Nodes (mFNs), yielding enhanced Fiber Nodes (eFNs). These eFns distribute CMTS functionality deep into Hybrid-Fiber-Coax Networks (HFCN) rather than centralizing the CMTS functions within a single location. Moving the cable modem terminations closer to the subscribers shortens the analog RF paths required to support cable modems. Communication of both subscriber data and CMTS control data is performed over Ethernet-compatible packet networks between the field-based CMTSs and an upstream facility (e.g., the Head End), which includes an Internet gateway. Packet data for multiple subscriber cable modems is easily compressed and merged over common network paths, reducing cabling plant complexity and increasing bandwidth utilization.

Abstract: Maintaining a reliable link includes altering a record of information transmitted across a network from a mobile unit to a destination based on an acknowledgment by the destination of receipt of the transmitted information and transmitting information from the mobile unit to the destination based on the record after the mobile unit establishes a new interface connection to the destination.

Abstract: A wireless office communication system including a multi-protocol wireless internet base station (WIBS) encompassing a base station controller (BSC), a mobile switch controller (MSC) and an ethernet interface module for coupling the WIBS to an existing internet protocol (IP) based network. The interface module provides for coupling the WIBS to an ethernet back-bone, a mobile communication unit and a public switch telephone network (PSTN). In one embodiment the wireless communication system includes wireless signaling logic and media gateway logic to enable the wireless office communication system to handle signal transmission between a mobile terminal and a media gateway. A virtual circuit identity code (VCIC) enables the base station to provide a virtual traffic path (VTP) to link communications between TIA/EIA-634 wireless signaling and media gateway control protocol (MGCP).

Abstract: A structure and technique for preventing collisions using a hash table in conjunction with a CAM to identify and prevent collisions of binary keys. A portion of the hash value of a binary key, which does not collide with a portion of the hash value of any other reference binary key, is used as an entry in the hash table. If two or more binary keys have identical values of the portions of the hash values, each of these binary keys are stored in their entirety, in the CAM. The key in the CAM provides a pointer to a data structure where the action associated with that binary key is stored. If the binary key is not found in the CAM, the binary key is hashed, and a specific entry in the hash table is selected using a portion of this hash value.

Abstract: A method (100) and corresponding equipment, the method for enabling a Node B/base station (14) to distinguish different states—HARQ active states and a DTX (non-transmitting) state—of a UE (12) in respect to use of the feedback HSDPA (high-speed downlink packet access) channel HS-DPCCH over which the UE (12) sends acknowledgement messages (ACK/NACK) to the Node B (14) in response to receiving packets via the HSDPA (downlink) data channel HS-DPCH, the method including steps (41 42) in which the UE (12) additionally sends preamble symbols if an acknowledgement message (ACK/NACK) is to be sent in a next time interval but not in the current time interval, and at least one postamble symbol prior to the UE (12) entering the non-transmitting state (DTX).

Abstract: In an IP network, tabulating the number of data packets received from and/or sent to a particular IP address over time can provide a mechanism by which it is possible to determine or predict overloading of a node or nodes in an IP data network. By selectively deleting data packets received from a suspect source address or inhibiting the transmission of data packets to a suspect destination address, network management and control can be readily accomplished.

Abstract: A telephone controller according controls a plurality of telephones connected to the Internet via a LAN. The telephone controller includes an IP address allocating circuit which allocates a private IP address to each of the telephones. A memory in the controller stores a table indicating a correspondence between IDs of the plurality of telephones and the private IP addresses. A control circuit controls communication between the plurality of telephones and the Internet using the private IP addresses, where the ID includes a domain name of the telephone controller and identification information.

Abstract: An integrated circuit for processing communication packets having separate data buffers and separate state information buffers. Each data buffer and each state information buffer (hereinafter termed resources) has an associated in-use counter. Multiple events can share the same resource. The counter associated with a resource is incremented when a resource becomes associated with a particular event. The counter associated with a resource is decremented when an event completes the use of that particular resource. When the in-use counter for a resource becomes zero, the in-use counter indicates that the resource is unassigned and that the resource can be assigned to a new event.

Abstract: Method and apparatus for dynamically selecting a packet type based on the quality estimates of the channel are disclosed. From these channel quality estimates, specific properties of the packet may be selected including whether a coding scheme should be used, the packet length, and the modulation used. The packet type selection is then performed in a dynamic fashion based on updates or changes to the channel conditions.

Abstract: First, two subsystems are connected with each other via a communication cable and then recognize physical connection between the two subsystems. Next, each one of the two subsystems ignores signals from the other subsystem for a predetermined time period after recognition of the physical connection. Then, the two subsystems execute the connection procedure and after that, establish data communication between the two subsystems.