Abstract: A system, device, and method for initial ranging that dynamically adjusts the backoff window size to maximize the probability of success during contention access. The invention takes a first system performance measurement using a first backoff window size, a second system performance measurement using a second backoff window size different than the first backoff window size, and determines a third backoff window size based on the first and second system performance measurements.

Abstract: A WLAN (108) includes a first access point (104) for providing wireless service within a first coverage area, a second access point (106) for providing wireless service within a second coverage area and programmed to transmit probe responses, and a wireless communications unit (102) located within the first coverage area and operating on the wireless service of the first access point (104). The communications unit (102) is programmed to monitor, or passively probe, for the probe responses, or is instructed by the first access point (104) on when to monitor for the probe responses, transmitted by the second access point (106). By executing such passive probing, the communications unit (102) may make handover decisions for switching between the wireless service of the first access point (104) to the wireless service of the second access point (106) based on access point data included in the probe responses.

Abstract: A network connection device allowing high-speed data conversion to ensure sufficiently high throughput is disclosed. The network connection device includes a plurality of conversion processors and a layer-4 switch. The layer-4 switch forwards an incoming IP packet to a selected one of the plurality of conversion processors depending on a result of analyzing the IP packet at layer 4. Therefore, the processing of data packet and the processing of control packet can be performed in parallel by the plurality of conversion processors, resulting in high-speed packet transfer.

Abstract: The invention relates to a method of a network arrangement for establishing a data transfer connection between a workstation equipped with a SIP application, but residing in a first network not supporting SIP protocol, and a second workstation or terminal, advantageously a mobile terminal, residing in a network supporting SIP protocol. A connection is established by creating a TCP tunnel from a SPWM agent in the first network to a SPWM connection point in the second network. The invention relates also to a computer program implementing the SPWM agent and SPWM connection point.

Abstract: A method for controlling the data rate of a virtual connection. Data packets are received for transmission on the virtual connection. The method comprises buffering the data packets in a buffer. A counter signal is generated to indicate the beginning of timeslots in a measurement window. The number of timeslots needed to transmit the data packets with a selected data rate is determined. The method further accesses data from at least one table to determine the spacing between timeslots in the measurement window used to request access to a data bus based on the number of timeslots needed to achieve the selected data rate. Further, access to a data bus for the data packets in the buffer is requested based on the data accessed from the table. The method further transmits the packets when access to the bus is granted.

Abstract: During G3FAX communication with an IP network 30, a FAX adapter 10 controls a packet size data storage 100d with the use of a control signal 14, generated by a packet size controller 10e, to adjust the packet size of FAX data sent from a G3FAX 20 according to delay information 12f from the IP network 30. When sending data to the IP network 30, the adapter 10 allows the size of a packet to be adjusted in response to the delay information 12f sent from the IP network 30, thus resolving a discrepancy in transfer speed.

Abstract: A system and method for associating an MSISDN of a mobile terminal with a temporarily assigned IP address is disclosed. A first server located within a wireless communications network generates and transmits a start packet to a service network responsive to an access request by a mobile terminal. The start packet includes the MSISDN of the mobile terminal and an assigned IP address. A second server within the service network extracts the MSISDN in the IP address from the received start packet and stores this information together within a database. When a service request is made by the mobile terminal to a server in the service network, the MSISDN may be determined from the database and used to access user parameters in a user database.

Abstract: In a decision-making route control system, an IP network is constructed by using the routing protocol, and general protocols of SNMP and ICMP. Thus, the route can be switched at the time of route trouble and under particular conditions without arrangement of particular routers by monitoring a state of a network system or a computer previously decided as the monitored object.

Abstract: The invention relates to a method and means for managing packet queues in switches. The switch has a shared memory split in a small internal memory and a large external memory. There is limited bandwidth to the external memory. The method comprises the steps of dividing a data stream incoming on the input ports intended for respective output ports into two parts, of which the first part is to be sent to an internal queue belonging to at least one output port and the second part is to be sent to the external memory. The incoming data stream may be identified as belonging to flow groups and the division of the data stream is then performed e.g. such that flow groups with a higher priority than a division threshold are sent to said internal queues in the first part, while flow groups with priority lower than said threshold are sent to the external memory in the second part.

Abstract: A network node is configured to negotiate for connections for high priority calls (e.g., voice calls) received at the node in the face of otherwise congested outbound communication links. The negotiation is conducted in a fashion that will preserve connections for existing calls associated with the node. For example, the negotiation may be conducted so as to cause one or more of the existing calls to consume less bandwidth over the outbound communication links than was consumed at a time prior to reception of the high priority calls. Such negotiations may be initiated depending on the availability of codec resources and/or compression schemes at the node and may be conducted using OAM cells.

Abstract: Integration of packet/cell networking of a wired/wireless network with ATM is achieved by application of a distributed architecture including an ATM network adapted to provide such integration. Network and protocol conversion between the wired/wireless network and the ATM network is performed by a gateway (GAGW) having capabilities to perform this function. A mobility server platform (MSP) handles routing between the gateways to other networks and the micro-mobility functions of the wireless base stations directly connected to the ATM network. A Inter-working function (IWF) element connects base stations (BS) or mobile switching centers (MSC) to ATM switch/routers and in the process provides various protocol conversions necessary to integrate various services into the ATM backbone. The integration of these networks is seamless with little apparent affect on the end point users of the ATM network on the overall system.

Abstract: An system and method for providing software upgrades to components of a vehicle, wherein the labor, time and expense of providing the upgrades are minimized. In one embodiment, a network is installed in the vehicle, wherein the network comprises a transmission medium and one or more network devices coupled thereto. The network devices are addressable using IP addresses or object terminology. Data, software or service upgrades may be provided to the devices coupled to the network. The data, software and services may be delivered to the network through a first device, such as a wireless communication device, and then transmitted through the network to the device which is to be upgraded. The network may join an external network which is configured to query the in-vehicle network and/or automatically download data to the in-vehicle network.

Abstract: This invention provides an improved radio communication system performing a soft hand-off procedure between the first and second base stations for a mobile station and performing asynchronous packet communication between a base station controller and each base station. The first and second base stations assign hand-off exclusive bandwidths to respective communication lines between the base station controller and themselves during the soft hand-off procedure. Accordingly, the first and second base stations can simultaneously receive packet signals sent by the base station controller, and then the mobile station can accurately perform site diversity.

Abstract: An enclosure services processor card is arranged to selectively split a fiber-channel arbitrated-loop (FC-AL) into two split loops. The card is adapted to plug into a backplane for a rack enclosure and includes a first switch operatively connected to a hub for the FC-AL. The hub comprises a plurality of port bypass circuits, each port bypass circuit being connected to a pair of tracks which in use connect to a respective one of each of the devices comprising the fiber channel arbitrated loop. The hub further comprises a pair of switches operatively controlled by the first switch, the pair of switches being disposed between respective port bypass circuits at which the loop is to be split. In a first state the pair of switches connect the devices in a single loop and in a second state the pair of switches divide the devices into two split loops.

Abstract: In a modulation system an efficient modulation at a master station and allows great flexibility in clients, from simple 2 bit/symbol single-channel modulation and demodulation to multi-channel multiple-bit modulation. The present invention also permits selection of the frequency band to use for transmission, thus dealing effectively with channel nulls and no channel equalization is required. The present invention is a useful technique for short-distance moderate-rate multi-drop networking, such as multi-channel home-telephone for Voice over IP(VoIP).

Abstract: A method of, and means for accomplishing the method, optimizing system resources in a network (102) using packetized voice telephony consists of the following steps: determining (302) that a packetized voice call from an originating gateway (104) terminates at a non-human voice interface system (108), wherein the packetized voice call is assigned a specified high priority level; and transmitting (304) signaling to cause the originating gateway (104) to transmit the packetized voice call to the non-human voice interface system (108) at a lower priority than the specified high priority level.

Abstract: A packet-switched multiple-access network system with a distributed fair priority queuing media access control protocol that provides multiple levels of priority of access and fair collision resolution with improved performance is disclosed. In one embodiment, the system provides high-speed transport of multimedia information on a shared channel. Further, in one embodiment, MAC level side-band signaling that is useful to other levels of the network protocol (e.g., the physical layer) is also provided.

Abstract: The present invention is a novel method and apparatus for controlling packet data flow in Bluetooth devices. The present Bluetooth flow control method and apparatus reduces data buffer overflow conditions using an inventive flow control technique comprising a dual flow control step and a payload header flow control step. In the dual flow control step, the present inventive method initially enables (i.e., transmits to a transmitting device) both packet header flow control and payload header flow control. In one embodiment, the Bluetooth flow control technique utilizes non-acknowledgment of “nack” commands to enable packet header flow control. In another embodiment, the Bluetooth flow control technique utilizes a packet header flow control bit to enable packet header flow control. In the payload header flow control step, the method determines whether payload header flow control information has been successfully received and, if so, it disables packet header flow control.

Abstract: An apparatus comprising a memory, an encoder and one or more registers. The memory may be configured to (i) read and/or write a plurality of state vectors and (ii) read and/or write data. The encoder may be configured to present state vectors to be written in response to (i) data read from the memory (ii) a first address and (iii) a serial data stream. The registers may be configured to present the first address in response to an input address.

Abstract: A communications system includes a data network that is coupled to an access system, which enables access to the data network by a client system. The client system issues requests through a router and the access system, with the requests specifying a server system as the destination. The server system sends response messages back to the client system through the data network and the router. The router is capable of modifying an indication of the maximum size of at least a portion of a message. This ensures that response messages communicated by the server system are not too large that the access system is unable to handle the response messages.