Abstract: A telecommunications system and method is disclosed for allowing a mobile station to determine whether or not to place a wireless call through an internet protocol (IP) based local area network (LAN) based upon broadcasted Quality of Service (QOS) information. The gatekeeper within the IP based LAN has access to the QOS information and periodically sends the QOS to the base station controller (BSC) functionality within the access node (AN) of the IP based LAN. The BSC functionality then transmits the QOS parameter on the System Information message via the base transceiver station (BTS) to the mobile stations served by the BTS. The mobile stations receive this QOS information and use this QOS information to decide upon a transport method to complete outgoing wireless calls.

Abstract: A control logic selects selecting means based on changeover information set in, for example, a switch and ROM, and communication is conducted by effecting a switching, by the selected switching means, to any of communication controllers stored in a communication LSI.

Abstract: In the present invention a method is disclosed for using a link to wide area network to connect communications from outside a home voice and data network to within the network. Voice and data modules connect telephones and computers to the existing telephone wiring in a home or building. A link to wide area network allows phone calls to be placed between the network and the Public Service telephone network. All devices connected to the telephone wiring have their own ID and communicate by Tokens in Ethernet technology. This allows Ethernet packets to perform a plurality of communications between a plurality of devices connected to the network under the control of tokens. The communications is accomplished by passing packets containing voice and data signals between phones and computers internal to the network and to an external port to connect to outside of the network.

Abstract: A method and system for preventing the transmission of stale communications packets by a network multiplexer. Common network hardware and protocol specifications require that communications delayed in transit through a network multiplexer must be discarded after a specified period of time. The method and system employ single bit flags within transmit queue entries to flag queue entries that become stale due to the passage of time while communications packets received by a network multiplexer are stored within the network multiplexer for subsequent transmission. A global clock within the network multiplexer invokes a transmit queue monitoring function at one-second intervals. The transmit queue monitoring function discards queue entries having single bit flag values of “1,” and sets the bit flag values of the remaining queue entries to “1”.

Abstract: A method of conjoint detection of a set of CDMA codes received at a plurality of antennas of a receiver like a mobile telephone receiver. The codes are transmitted via a transmission channel with transfer matrix A satisfying the equation e=A.d+n, where d is the set of symbols of the codes transmitted, n is an additional noise vector and e is the set of received samples.

Abstract: A method and arrangement for prioritized transmission of packets from a plurality of storage queues, each interfacing one corresponding input bitstream to one common transmission medium, is disclosed, whereby the respective queue priorities, on the basis of which access to the common transmission medium is determined, are itself dependent upon respective weigths associated to the corresponding input bitstreams. This dependency on these respective weight; relates to a respective amount of successive values of these respective queue priorities, to be selected from an arbitrary interval and sorted in a predetermined sequence.

Abstract: The invention relates to an improved Fiber Channel data management technique. More specifically, this patent relates to an improved scheme for managing the related data in related frames that form a sequence. This patent also generally relates to the management of multiple, active sequences which are simultaneously in transit on a Fiber Channel. This invention provides a means for efficiently locating the sequence status block associated with an arbitrary Fiber Channel sequence by using the source identifier field, the originator exchange identifier field and/or the sequence identifier fields of a Fiber Channel frame header to construct a hash table lookup search.

Abstract: In a transmission network including multiplex transmission units A, F, G, D and E, when the line breakage has occurred on the OC-12 transmission path of the direction from unit A to unit F, the unit F detects the signal coming in from the OC-12 path indicative of the line breakage. The unit F inserts the APS bytes which comes in from the unit A into the undefined area of the OC-192 transport overhead which is reserved for the through-transport of APS bytes, and transports it to the unit G. On receiving the through-transport APS bytes, the unit G inserts it intact into the defined area for the APS bytes in the OC-12 transport overhead, and sends it to the unit D. In this manner, protection switching between the units A and D is carried out.

Abstract: A transmitter for wireless communications provides multiple types of orthogonality to improve transmit diversity. Transmit diversity is improved by using both coding and carrier frequency orthogonality. Data to be transmitted is broken into four parallel channels. Two of the channels are transmitted on a first carrier signal and the other two channels are transmitted on a second carrier signal. Channels transmitted on the same carrier signal are provided with orthogonal codes so that they may be separated by a receiver. Channels transmitted on different carrier signals may be encoded with identical orthogonal codes. The modulated carrier signals are then transmitted using at least two antennas, where one antenna is used for each carrier.

Abstract: A communications network is evaluated by selectively sending and receiving a plurality of network evaluation signals through the network. Responsive to these evaluation signals, selective network evaluation parameters are determined and stored. Responsive to these parameters, the response time and throughput characteristics of the network are determined by means of algebraic and queuing theory derivations. Network response time analysis determines the apparent bandwidth, utilization, internal message size, queue factor, and device latency. Throughput analysis defines, calculates, and uses hop count, duplex, throughput and multi-server factors.

Abstract: The interfacing device handles asynchronous/synchronous adaptation and rate control between the ATM flows and the flows transmitted on the wireless interface. It transposes the ATM cells (53 octets) into packets which can be transmitted directly on the wireless interface (40 octets in the case of DECT). Similarly, at the receiving end, it reconstructs the original ATM cell flow on the basis of the packets received. In order to guarantee a certain transmission quality at the level of the wireless link, the device uses a data acknowledgement and retransmission mechanism adapted to the characteristics of the synchronous wireless channel. In order to fulfil the quality of service requirements of the various applications in terms of error rates and transmission delays, the device allows the data protection mechanism to be set for each ATM connection depending on the characteristics of the service.

Abstract: Procedure for scanning a module line or time slot in a V5 access node connected to a local exchange via a V5 interface and with a number of subscribers connected to it via a concentrating link, in which procedure a time slot in the V5 interface is scanned by transmitting by means of the part of the BCC protocol associated with the local exchange a scanning message to the part of the BCC protocol associated with the V5 access node, which latter protocol part acknowledges receipt of the scanning message. According the the present invention, before receipt of the scanning message is acknowledged, the concentrating subscriber interface is scanned to find in it a free module line or time slot for the call and the free module line or time slot is specified.

Abstract: A method and apparatus for reducing overload conditions of a node of communication system is disclosed. One or more pairs of predefined upper and lower overload threshold values are stored. A rejection proportion value is stored in association with each of the pairs of overload threshold values. Messages arrive at the node and are processed by it. The current processing load or saturation level of the node is continuously measured in real time. The current saturation level is associated with one of the predefined pairs of overload threshold values. The node rejects a number of messages equal to the rejection proportion value that is associated with the overload threshold values that correspond to the current saturation level. Preferably, only call initialization messages, such as call setup messages or initial address messages, are rejected.

Abstract: Flexibility is achieved in provisioning communication rings with an integrated DCS that allows any port that is connected to a line interface unit within the integrated DCS to be coupled within the integrated DCS—pursuant to software controlled provisioning—to any other port that is connected to a line interface unit within the integrated DCS. This is accomplished by merging the cross connect fabrics of the ADM portions of the integrated DCS with the cross connect fabric of the DCS portion of the integrated DCS, by incorporating at least some of the switching controls of the ADMs in the ADM portion of the integrated DCS in the controller of the DCS, and by insuring that the SONET K-bytes can be passed by the controller of the flexible integrated DCS from any line interface unit to any other line interface unit.

Abstract: In prior art, the provision of back-up circuits for ATM cells in ring-type structures is efficiently controlled using linear structures. According to the invention, this function is extended to ring-type MPLS network architectures as follows: linear MPLS structures are formed into a ring-type MPLS structure and two unidirectional MPLS connections which respectively connect the same switching devices and run in opposite directions are logically associated to one another, whereby the operating link and the back-up link are routed via different physical paths.

Abstract: In a typical remote access application, such as access from the home to a packet-switched high speed network such as the Internet, the low-speed dial up connection to a network access is the main bottleneck in terms of the bandwidth and efficiency of transfer of data across the network access server. The present invention increases throughput through the network access server by identifying and dropping redundant, e.g., retransmitted, packets en route from the LAN or WAN to the remote terminal, thereby preserving precious bandwidth.

Abstract: The data communications rates on a communication line between a central office (CO) and a customer premises equipment (CPE) modem are set by initially attempting to synchronize at a base upstream and downstream rate. The CO then requests that the CPE modem send upstream a signal to noise ratio (SNR) indication and, based on this, predicts the maximum attainable downstream rate. An attempt is then made to synchronize on this new rate. If successful, then, the CO reads the upstream SNR and based on this attempts to maximize the upstream rate. Line quality is then monitored and adjusted as necessary.

Abstract: A special rendering mode for the first few seconds of play out of multimedia data minimizes the delay caused by pre-buffering of data packets in multimedia streaming applications. Instead of pre-buffering all incoming data packets until a certain threshold is reached, the streaming application starts playing out some of the data packets immediately after the arrival of the first data packet. Immediate play out of the first data packet, for example, results in minimum delay between channel selection and perception, thereby allowing a user to quickly scan through all available channels to quickly get a notion of the content. The immediate play out is done at a reduced speed.

Abstract: A method and system for initiating selective flow control within a network multiplexer. Each port of a network multiplexer is associated with high and low threshold values, as well as a list of indications of ports that have requested the port to initiate flow control and a list of indications of ports which the port has requested to initiate flow control. A port that, by queuing a message descriptor to the transmit queue of a destination port, causes the number of message descriptors queued to the transmit queue of a destination port to equal or exceed its high threshold, is flow controlled by the destination port. When the number of message descriptors queued to the transmit queue of a destination port that previously equaled or exceeded the high threshold falls below the low threshold, all ports flow controlled by the destination ports are released from flow control.

Abstract: A wireless communication system 200 comprises a connectionless packet network 201 coupled to a plurality of sites 203-208 that are in location areas 260, 261. The sites join respective location area multicast addresses to receive messages from other sites in their location area. Communication units desiring to participate in talkgroup calls need only to register affiliation with a first site of the location area. Upon the first site receiving an affiliation message, it joins a payload multicast group address to receive payload for the talkgroup. In alternative embodiments, the first site sends, via the location area multicast address, either control message(s) or tunneled payload associated with the talkgroup call to secondary site(s) of the location area.