Abstract: A method and system for the capture of data files transmitted over a wired network by a data traffic generator. The mapping and/or translation of network addressing data contained within the captured data frames is such that the frames, when transferred over the wireless medium, appear to have originated from one of a population of emulated wireless stations. The mapping and/or translation of network addressing data contained in data frames received over the wireless medium directed to a specific emulated wireless station is such that the frames, when transmitted over the wired network, appear to be destined for the data traffic generator. The mapping and/or translation function is applied as frames traverse the boundary between the external data source network interface and the wireless network interface.

Abstract: A packet transmission system is disclosed. The system serves between terminal apparatuses that include a supervisory control circuit configured to transmit a supervisory signal in a direction opposite to the transmission direction of a main signal on each of and both of an upstream circuit and a downstream circuit. The packet transmission system transmits overhead information of a packet frame of the main signal of the upstream circuit and the downstream circuit using the supervisory control circuit of the downstream circuit and the upstream circuit, respectively.

Abstract: According to the present invention, methods and apparatus are provided to improve the techniques and mechanisms for forwarding packets at a fiber channel switch. A combined area table/domain table (ATDT) is accessed using destination information associated with a fiber channel packet. Area/port or domain information can be used to address entries in the ATDT. Each entry provides one or more paths to a given destination. Traffic shaping, load balancing, and other policy based forwarding considerations can be applied.

Abstract: To enable data packets, which can be present in different data transmission formats and which are to be routed in a communication network, to be stored as simply and effectively as possible, it is proposed in accordance with the invention to generate for each data packet to be stored a descriptor (8) having a special data structure, the descriptor (8) comprising, in particular, a data field (14) with a pointer array. The data of the data packet to be stored are stored in a memory (1) which comprises a multiplicity of memory blocks (7) of the same size. The pointer array of the descriptor (8) points to the start addresses of the memory blocks (7) needed for storing the data packet.

Abstract: Systems and methods are provided for transferring physical layer control information from a central access point to individual subscriber units while maintaining transparency to higher layers. Adaptation of wireline MAC protocols to wireless applications is greatly facilitated. Subscriber unit power level may be controlled from the central access point.

Abstract: For offering entertainment services by video streaming content to users, a video encoder creates the required .nsc file for each broadcast channel. This .nsc file is retrieved and stored on a server which notifies each set-top box in the field, via a multicast notifier of the availability of the new service. This notifier contains the multicast address and port to where the .nsc files are being streamed. Once the set-top box retrieves this notification, it attempts to join the dedicated multicast stream, download the .nsc files and store them locally in memory on the set-top box. When a user selects a broadcast channel from their lineup, the set-top box will access the local file to obtain the proper information about that particular ASF stream; hence, it will not have to do an HTTP retrieval.

Abstract: In one embodiment, the invention is an apparatus for testing differential delay correction of network elements using virtual concatenation. The apparatus includes a first PRBS (pseudo-random bit stream) generator dedicated to a first tributary. The apparatus also includes an interface between the first PRBS generator and a tester. The apparatus further includes an interface between the first PRBS generator and a device under test. The apparatus may further include a second PRBS dedicated to a second tributary. The apparatus may also include a control logic block to control the first PRBS generator and the second PRBS generator, and coupled to the first PRBS generator and the second PRBS generator.

Abstract: A method and apparatus are disclosed for compensating for optical transmission delays in a synchronous mobile communication system. A Base Station Transceiver Subsystem (BTS) includes a Main Unit (MU) for processing a mobile communication signal and a plurality of Remote Units (RUs) connected to the MU by Synchronous Digital Hierarchy (SDH) transmission, for performing radio processing for communication with a Mobile Station (MS). The method comprises the steps of sequentially forming a loop on an optical transmission line to each of the RUs for optical transmission delay compensation test between the MU and each of the RUs; once a loop for the optical transmission delay compensation test is formed, transmitting a test SDH frame to a corresponding RU, and measuring a delay time until the test SDH frame is fed back; and transmitting data to the corresponding RU after compensating the transmission time by the measured delay time.

Abstract: A 3-frequency branching circuit in the past could not be used for a system wherein a TDMA method such as GSM and DCS and a W-CDMA method such as UMTS are mixed. The 3-frequency branching circuit equipped with branching means having first and second internal terminals, an antenna terminal of connecting to an antenna, a low-pass filter connected between the first internal terminal and the antenna terminal, and a high-pass filter connected between the second internal terminal and the antenna terminal, a switching circuit of switching between GSM TX and GSM RX, a switching circuit of switching between DCS TX, DCS RX and a third internal terminal, and a duplexer connected to the third internal terminal.

Abstract: A serial controller for use in controlling various radio frequency (RF) modules within an RF integrated circuit is disclosed. The serial controller is coupled to an serial bus that internal to the RFIC that transmits commands and data from a microcontroller to a data receiver module within the serial controller. The serial commands and data are transmitted across the serial bus in a data packet format having an address-overhead portion and a data portion, wherein the data receiver module removes the address-overhead bits from the packet and provides the data portion of the packet as output data. A decoder/coder logic module coupled to the data receiver receives the serial data and is operative to process the serial data and in response thereto activate one or more control signals. An RF module includes at least one circuit and one or more switching elements that are coupled to the one or more control signals.

Abstract: Transporting an asynchronous transfer mode (ATM) stream through a bonding group involves properly splitting the stream into sub-streams to fit into individual member bearer's bandwidth at the transmit end, and properly merging the sub-streams to reconstruct the stream at the receive end. At the receive end, the cells can be put together in the proper sequence in a process of cell aggregation based on attached sequence numbers. Once the stream is re-constructed, the attached sequence numbers are replaced by the original field contents of the ATM headers. Methods of cell aggregation are described that assist the bonding scheme in working efficiently.

Abstract: A communications system that facilitates the provision of differentiated quality of service is disclosed, including a marker for receiving a packet of data from an application (110), for examining the packet for predefined criteria, for setting the value of QoS bits in the packet based on the predefined criteria, and for forwarding the packet to a multiple Virtual Circuit (multi-VC) bridge (300). The multi-VC bridge (300) is connected to the marker and selects an Asynchronous Transfer Mode (ATM) Permanent Virtual Circuit (PVC) (120, 122, 124) over which to transmit the packet by mapping the value of the QoS bits to a PVC in a mapping table and forwards the packet over the selected PVC to a destination address.

Abstract: During an exchange of communications between a client and a server, the state of communications is monitored to determine if the client has lost communication with the server prior to completion of the exchange. If a loss of communication is detected, a recovery message is transmitted to the client, wherein the recovery message is received by the client after client communications with the network are re-established. The recovery message causes the client to send a response message to a predetermined network location. Receipt of the response message is an indication that the client has re-established communication. In such a case, the exchange is returned to a state that existed prior to the loss of communication.

Abstract: Systems and methods are disclosed for using High-level Data Link Control (HDLC) channel context information to simultaneously process multiple HDLC channels. Preferred embodiments of the present invention enable a single network processing engine to process multiple HDLC channels. The current state of the HDLC channel can be evaluated, stored, and restored, which means that the processing of a channel can be halted, the channel state read and stored, and the state of a different channel written to the processing engine. This allows the engine to begin processing a new channel, and then, at a later stage, restore the state of the original channel and resume processing.

Abstract: The invention discloses a method for implementing signaling link redundancy in IP networks. Two ASPs are created for the same AS in the host at the IP network side, and all user adaptation protocols share ASPSM and ASPTM messages so that the states of the two ASPs can become active and inactive respectively, thus to implement two signaling links for serving the same traffic. When switch is initiated, SCTP association can be closed by using “graceful close”, and the SCTP itself will make sure to send out all the data remaining in its buffer and its higher-layer applications will also send subsequent data in order after learning the remaining data are all sent out, thus sequential delivery for the data can be guaranteed. This method can avoid data loss and disorder, and the speed for switch can be ensured because the backup link will be notified immediately after the data on the primary link are sent out.

Abstract: A computer-implemented method for filtering, responsive to a logical specification of a network farm and a communication model for the farm, a tree topology network specification to obtain a filtered tree topology network specification is disclosed. The filtered tree topology network specification has fewer devices therein relative to the tree topology network specification, devices needed for constructing the farm being available in the filtered tree topology network specification. The method includes removing a first set of devices and a first set of switching elements from the tree topology network specification starting at the lowest level of the tree topology network specification and working toward the root node of the tree topology network specification. Each device in the first set of devices represents one of a redundant device, a device having a type unneeded by the farm, and a device unavailable for constructing the farm.

Abstract: A receiver, an integrated circuit chip and a method are provided for estimating the power of a digitally modulated signal received by the receiver in a communication system. The method comprises determining in-phase and quadrature-phase values of a phase constellation system relating to the received signal, calculating at least one modified in-phase value and at least one modified quadrature-phase value relating to the phase constellation system rotated by a predetermined angle, and determining absolute values of the in-phase and quadrature-phase values and the modified in-phase and quadrature-phase values. The method further comprises identifying the maximum of the absolute values, and determining a power estimate of the received signal based on the identified maximum value. The provided technique may allow for estimating the power of a digitally modulated signal in a simple and less complex implementation.

Abstract: The invention relates to a base transceiver station in a CDMA mobile telephone system, including a mechanism for maintaining a code tree which determines spreading codes to be used in the system, a mechanisms for selecting a spreading code from the code tree for the communication between the base transceiver station and terminal equipment communicating with the base transceiver station. The mechanisms for selecting a spreading code are configured to select a highest level in the code tree which includes at least one branch of the code tree whose spreading codes are allocatable, and allocate for use a spreading code generated from a branch of the selected level whose spreading codes are allocatable. The invention further relates to a method and a communication system in connection with Code Division Multiple Access (CDMA) technology.

Abstract: Dynamic rate limiting adjustment may be provided by sampling actual output rates from a rate limited device and utilizing this information to modify configured traffic limits. This allows the device to achieve actual output rates much closer to the desired rate limits for users and services.

Abstract: A method for performing a lawful interception in a packet network comprises the steps of generating (S2) interception related information packets from a communication to be intercepted; generating (S2) communication content packets from a communication to be intercepted; providing (S3) identification data for the interception related information packets and for the communication content packets of one group of communication packets; providing (S5) ordering data for each of the interception related information data packets and for each of the communication content packets; and transmitting (S6) the interception related information packets, the communication packets, the identification data and the ordering data to an interception authority device. By this measure, a missequenced reception of interception related information (IRI) packets and communication content (CC) packets can be avoided.