Abstract: An arrangement is described for aborting predicted collisions between independent FH-CDMA channel hopping patterns on separate Bluetooth transmission paths in close proximity. Facilities are provided for muting all but a selected one of the activated channels during the time slot(s) when such collision is predicted to occur. Advantageously, such selection favors real-time or other high-priority traffic. The packets that would otherwise be transmitted over the muted channel(s) during the time slot (s) predicted for collision are locally buffered and thereafter selectively released when the muted channels are reactivated. Priority of resumption of transmission on the muted channels may be afforded on the basis of the relative ages or sizes of the packet content in their associated buffers.

Abstract: Encoding a real-time and non-real-time video stream, encapsulating the encoded video stream along with the decoding software corresponding to the encoding program into active packets at the Application and Services layer, and transmitting active the packets to the receiving terminal, which then supplies the receiver with the necessary decoding software to play any type of encoded video stream without having the associated decoding software pre-loaded.

Abstract: A Bluetooth-enabled terminal having a radio manager for minimizing frequency collisions between channel hopping patterns transmitted over plural channels established between such terminal and correspondent Bluetooth devices is described. The radio manager extracts successive sets of projected future N-time slot segments of the respective Bluetooth channel hopping patterns. Each extracted set is tested to detect a time slot, if any, where frequency hops of the segments of the set coincide, indicating a frequency collision. When a collision time slot is detected, the radio manager generates a marker which triggers an alteration of the frequency hops that would otherwise be exhibited by a subset of the generated channel hopping patterns in such detected time slot. Such terminal may optionally be provided with an additional network interface to define a collision-resistant Bluetooth access point.

Abstract: A method and system is provided for periodically and dynamically updating allocation pools of IP address which are reserved for wireless or wireline hosts. A system IP address server controls an entire address pool, contains predictive analysis logic, performs a predictive analysis, partitions the IP addresses into distinct address pools, and maintains “wireless guard bands” of IP addresses for wireless users to ensure that a higher priority address pool is never exhausted before an address pool which has a lower priority.

Abstract: A method and system is provided for periodically and dynamically updating allocation pools of IP address which are reserved for wireless or wireline hosts. A system IP address server controls an entire address pool, contains predictive analysis logic, performs a predictive analysis, partitions the IP addresses into distinct address pools, and maintains “wireless guard bands” of IP addresses for wireless users to ensure that a higher priority address pool is never exhausted before an address pool which has a lower priority.

Abstract: A system and method are provided by which a network operator is able to detect fraudulent use of a subscriber's terminal, regardless of whether or not the subscriber is aware of the fraudulent use of her terminal. Detecting unauthorized terminal use in a wireless network includes recording a history of terminal location and registration patterns, analyzing the recorded history of location and registration patterns of the terminal, monitoring current location and registration patterns of the terminal, and requesting clarification when a deviation between said statistical analysis of the location and registration patterns of said terminal and said current location and registration patterns of said terminal is detected.

Abstract: A technique for assigning an address (“shadow address”) to a mobile station that is compatible with the layer-2 address on the wireline network which serves the mobile station. The shadow address is then used as a wireline identifier for the destination address for frames ultimately destined for the mobile station. The shadow address is stored in a watch list for serving base stations, and any base station receiving a frame with a shadow address in its watch list process the frame to forward it the to mobile station. In this way, the shadow address facilitates carrying out soft handoff and smooth handoff.

Abstract: A technique for assigning an address (“shadow address”) to a mobile station that is compatible with the layer-2 address on the wireline network which serves the mobile station. The shadow address is then used as a wireline identifier for the destination address for frames ultimately destined for the mobile station. The shadow address is stored in a watch list for serving base stations, and any base station receiving a frame with a shadow address in its watch list process the frame to forward it the to mobile station. In this way, the shadow address facilitates carrying out soft handoff and smooth handoff.

Abstract: A technique for assigning an address (“shadow address”) to a mobile station that is compatible with the layer-2 address on the wireline network which serves the mobile station. The shadow address is then used as a wireline identifier for the destination address for frames ultimately destined for the mobile station. The shadow address is stored in a watch list for serving base stations, and any base station receiving a frame with a shadow address in its watch list process the frame to forward it the to mobile station. In this way, the shadow address facilitates carrying out soft handoff and smooth handoff.

Abstract: A method for time series-based localized predictive resource reservation for handoff in multimedia wireless networks models the amount of network resources R(t) necessary to handoff a mobile terminal in a wireless IP network as an ARIMA (p,1,q) process. An ARIMA (p,1,q) process is a Weiner process wherein the future value of a stochastic variable depends only on its present value. The ARIMA (p,1,q) process includes an autocorrelation component, wherein the future value of a stochastic variable is based on its correlation to past values, and a moving average component that filters error measurements in past variable observations. Each wireless IP base station determines its own ARIMA (p,1,q) model and uses its model to locally predict the amount of network resources R(t) it needs to reserve for the handoff of mobile terminals.

Abstract: Active packets are utilized by a mobile terminal in a wireless network to manage the micro-mobility which includes both link layer mobility and intra-domain mobility of a wireless connection as the mobile terminal moves from one cell to another in a domain of a network. Active packets convey instructions and data so nodes in the domain may update forwarding tables maintained by each of the devices in the domain. The forwarding table entries contain both link layer entries and network layer entries to efficiently handle roaming by the mobile terminal.

Abstract: Encoding a real-time and non-real-time video stream, encapsulating the encoded video stream along with the decoding software corresponding to the encoding program into active packets at the Application and Services layer, and transmitting active the packets to the receiving terminal, which then supplies the receiver with the necessary decoding software to play any type of encoded video stream without having the associated decoding software pre-loaded.

Abstract: Method and apparatus for dynamically allocating IP addresses in a wireless IP network. IP address servers determine the requisite IP address pools and guard bands for individual network cells to guarantee fair access to the network and facilitate handoff host handoff from a prior cell to a new cell. IP address servers also prioritize handoff and resident hosts that request an IP address from the IP address server. In particular, IP address servers assign a higher priority to handoff hosts over resident hosts that request an IP address from an IP address server in order to maintain a preestablished handoff host network connection instead of dropping a handoff host connection in favor of a new resident host network connection. Finally, each cell is allocated a minimum number of IP addresses to ensure a certain level of fair access to the network regardless of the cell wherein a handoff or resident host resides.

Abstract: A method and system for dynamic forward assignment of IP addresses in a wireless network wherein a serving base station requests IP addresses of it neighboring cells. The serving base station then provides the requested IP addresses to the mobile stations it serves based on whether the mobile station will be entering a particular neighboring cell. Immediately upon entering the neighboring cell the mobile station establishes over the air communications with the neighboring cell's base station using one of the requested addresses. In another embodiment of the present invention each mobile unit is responsible for attaining IP addresses from the base stations of neighboring cells. Accordingly, the base stations serve as relay points for the IP address requests from the mobile unit to an address server.

Abstract: A methodology and concomitant circuitry for adaptively controlling the number of packets and the error-correction applied to each packet in a layered coding communication system. The determination of the number of packets and the error-correction is based upon the bit-error rate of the channel propagating the packets.

Abstract: A method for reserving resources in a wireless network. The method is implemented in a base station by moving the function of predicting and reserving resources from the radio dependent layer to a radio independent layer. In accordance with our method resources currently being used and being demanded are monitored. The monitored data is then used by a reservation handler to predict future resource demand. The future resource demand is then estimated by the reservation handler for both radio dependent and radio independent layers. In estimating future resources we use a Wiener process model and incorporate instantaneous changes in the resource usage and demand so that call fluctuations are accounted for.

Abstract: A telephone subscriber having both a wireline and a cellular telephone can switch calls between these phones. A routing table identifies that a subscriber is entitled to this service, and a look up table maintains the telephone numbers of the two different telephones. Upon detection of a unique signal indicating a request for switching a call connected to one of the telephones to the other telephone, a connection is made to the other telephone, the two connections are bridged, and then the first connection is dropped. The routing table may be maintained in a central office and the look up table may be maintained in a mobile switching center or a fixed cellular mobility agent.

Abstract: Methods and systems are provided for facilitating intra-domain mobility. A first network or domain includes a home agent or SIP proxy of a mobile node. A second network includes two or more subnetworks and at least one dynamic tunneling agent (DTA). Each subnetwork includes an associated subnet agent. To communicate, the mobile node first registers with a subnet agent, receives a local care-of-address and a global care-of-address, and then registers with a DTA. The local care-of-address received from the subnet agent may enable communication with the mobile node without determining a specific route to the mobile node. The global care-of-address received from the subnet agent may include the address of the DTA with which to register. On registering with the DTA, the DTA may provide the mobile node with a unique, globally reachable global care-of-address, which the mobile node may then forward to a home agent, SIP proxy, or a correspondent node.

Abstract: In a widely distributed digital communication network call delays and eventual outcome are anticipated (i.e., expected call outcome) at the initiation of a call at an originating terminal and the call is completed by signal switching to its destination terminal and by decreasing the number of related message transfers between network controllers and hubs required to complete the balance of administrative refinements of the call connection. The routing steps for setting up the call trajectory to the destination hub are completed immediately before the administrative steps, such as authentication, access control, bandwidth availability etc., are performed. Administrative refinements subsequent to the preliminary call set up are performed in a distributive manner. Administrative and capacity items are determined and completed post route determination and computed or accessed in parallel making this information available for a final call set up. If this information is adverse the call is immediately terminated.

Abstract: A cellular-fixed call transfer service is effected by introducing a Fixed-Cellular Mobility Agent (FCMA) into the cellular network, the FCMA having the functionality of a PSTN central office/CN mobile switching center for interconnecting incoming calls to the MSC as outgoing calls to the CN or the PSTN and which, in addition, monitors each call connection to carry out call transfers between the CN and the PSTN.