Abstract: Wasteful use of radio resources is minimized in a packet transmission system which performs retransmission control at a higher layer. When transmission of a segment has failed at a lower layer and, for example, when the number of lower-layer retransmit requests from an error detection unit at the lower layer has exceeded a predetermined threshold, any other segment remaining to be transmitted in a packet of which the failed segment forms a part is discarded and, at the same time, a retransmit request is sent to a retransmission control unit at the higher layer.

Abstract: Embodiments of the present invention provide a security protection method and apparatus for performing security protection during service interruption occurring in a switch network. In an embodiment of the present invention, a transmitting-end device selects each sub-route from a plurality of sub-routes one by one to transmit a call to an opposite-end device; when a trunk device receives the call, it analyzes a route condition from the current selected sub-route to au opposite-end device; the trunk device determines whether to transmit the call to the opposite-end device or report a blocking message to the transmitting-end device according to the route condition; if the transmitting-end device receives the blocking message, then the transmitting-end device excludes the current selected sub-route, judges whether all the sub-routes are excluded, and determines whether to continue selecting a next sub-route or end selecting the sub-routes according to the judgment result.

Abstract: Time-varying latency is estimated based on the round-trip time between the time of sending a message and the time of receiving an acknowledgement of receipt of the message. The round-trip time relative to a transmitter is modeled as a combination of known, or determinable, delays, plus an unknown latency, plus a processing/acknowledgement delay at the receiver. The estimated time-varying latency is further refined to give more weight to estimates based on fewer unknowns or a lesser magnitude of unknowns, and to impose physical constraints, such as assuring that the estimate does not imply an unrealizable event. TCP-specific constraints and assumptions are also applied to further refine the latency estimates.

Abstract: The invention provides a framework for facilitating the deployment of management tunnels between management and managed devices. The tunnel may be initiated either from the management device or from the managed device. When the channel is first established, the credentials of the respective devices are verified. To this end, the devices may be pre-provisioned with unique identifier, as well as certificate assigned by a certificate authority together with associated private key. Upon initial setup of the tunnel, the identity of the management device may be provided by the administrator. Alternatively, the devices may be pre-configured by the manufacturer to participate in a web of trust, with each device capable to accept recommendations for an identity of the management server from the other member devices. Finally, a management device locator server may be provided to facilitate easy configuration.

Abstract: A node for configuring a ring type network system in such a mode that a plurality of physical links belonging to difference rings exists between nodes opposite to each other, has a storage unit stored with link associated information representing an associated relationship between ports of physical links and a port of a virtual link virtually set up to at least one physical link, ring configuration information representing a paired relationship of the ports of the physical links configuring the different ring, port numbers of both ends of the physical link and port numbers of both ends of the virtual link, and a processing unit executing a process of transmitting, to other nodes, such information that one virtual link is associated with the plurality of physical links belonging to the different ring, and setting up, when receiving a signaling message for setting up a path, the path passing through the same ring on the basis of pass route information in the message and the storage information stored in the sto

Abstract: A routing method of a wireless communication system is provided implementing advantageous features of both the tree routing and the link state routing. In the routing method, the system generates an adaptive tree table which defines a network in a tree structure of at least one branch with at least one node and each node generates a link state table which includes information on neighbor nodes, such that the packets are routed on the basis of the adaptive tree table and the link state table. Advantageous mechanisms of the tree routing and the link state routing are combined, thereby it is possible to eliminate most single point of failures of conventional tree routing and provide shorter paths compared with conventional tree routing.

Abstract: By signalling information for establishing the push-to-talk communication of a first terminal with a switching node in a mobile telecommunications network, establishing a usable link with the switching node from the first terminal and then establishing a usable link with at least one other terminal from the switching node, a push-to-talk connection is established.

Abstract: Improved power control mechanism for cellular time division duplex systems supporting multislot services. The improved power control mechanism allows for individual adaptation transmission power control (TPC) commands to time slot specific interference conditions in case several time slots are assigned to one composite transmission channel (CTrCH).

Abstract: A system and a method allowing a user terminal (18) in a network to simultaneously access a plurality of radio based access networks (19, 20) of diverse access technologies. Characteristic features of the invention are access selection adapters (22, 23), each one associated with a respective radio based access network, and an access technology independent access selector (26). An access adapter has means (32) for receiving access technology dependant information from its respective access network and means (31) for translating the information into access technology independent status information. The access selector comprises an access selection algorithm (33) interacting with applications (27) resident in the user terminal and with each access adapter for selection of a radio access network based on an individual QoS profile associated with each respective application and on said access technology independent status information. The invention also relates to a method for service scheduling.

Abstract: A common lub transport for transmitting identical multimedia service data blocks over an lub interface (9) from a radio network controller (RNC) (4a-c) to a base station device (5a-e) within a radio access network (3), to be forwarded to multimedia service joined mobile terminals (7) located in cells (6a-h) served by said base station device.

Abstract: A relay apparatus (100) acting as an access point of wireless LAN watches a packet showing a request of starting communication among the packets to be relayed between terminal apparatuses (101,102) and records the identification information of the terminal apparatus included in the packet. When the number of the terminal apparatuses whose identification information is recorded exceeds a preset upper limit value, the relay apparatus disconnects a communication relating to the latest identification information by transmitting a disconnection command or discarding the packet. With this arrangement, deterioration of streaming communication controlled by an access point (AP) of wireless LAN can be prevented.

Abstract: A method and apparatus informs nodes included in a wireless local area network (LAN) of how to avoid access collision in a wireless LAN. A wireless LAN access point or an independent basic service set (IBSS) control station receives a Contention-Free-End (CF-End) frame, compares a basic service set ID (BSSID) of the received CF-End frame of the access point or the IBSS, and rebroadcasts the received CF-End frame if the comparison result indicates that the two BSSIDs coincide with each other. Thus, all stations included in one BSS can receive the same time information for controlling medium access.

Abstract: A method and apparatus for relaying data within a multi-hop communication system (200) is provided herein. During operation, all preamble (301, 305) and broadcast (303, 307) information for relaying nodes (201) and for the base station (204) is placed during a beginning portion (315) of a frame (300) prior to any data transmission (511, 609). By placing preamble/broadcast portions in the beginning of the frame, the data transmission portions of the frame can be allowed to vary in time, yet synchronization will be allowed between all nodes in the system.

Abstract: In one embodiment, a scheme is disclosed for controlling voice call continuity (VCC) functionality of a user equipment (UE) device with respect to a call in a network environment including a visited network and an IP multimedia subsystem (IMS) network. The UE device's VCC operational mode is provided to be selectably alterable responsive to user input. Upon detecting the VCC operational mode of the UE device, a message is generated by the UE device towards the network environment including a VCC application server node disposed in the IMS network, the message being generated pursuant to a call originated by the UE device while roaming in the visited network, wherein the message includes a VCC operational mode indicator indicative of the UE device's VCC operational mode.

Abstract: A system and method for communicating information from a base station to one or more user terminals via a forward link to a relay and distribution device is provided. The method includes determining a separate information rate for information to be transmitted from the base station to each of the user terminals. Each information rate is determined to allow successful communication with the respective user terminal and to provide a predetermined amount of link margin above a threshold energy-to-noise ratio (Eb/No) in the forward link. The method additionally includes formatting data received at the base station into a continuous time division multiplexed (TDM) data stream that includes a plurality of data frames to be transmitted to the user terminals. Each data frame is formatted to have the determined information rate of the respective user terminal destine to receive the data frame. The TDM data stream is transmitted using a single carrier of the forward link.

Abstract: The present invention aims to provide a reception apparatus that receives and demodulates a signal transmitted by using time-division multiplexing, with reduced power consumption. In detail, a receiving unit including a tuner operates to receive a signal only during a time period for which a desired signal is transmitted. The received signal is converted into digital data, and the digital data is stored into a memory. With the use of the digital data stored in the memory, a PLL performs all of the necessary operations from synchronization establishment to demodulation.

Abstract: Deterioration of transmission efficiency due to a change in modulation scheme is prevented. A terminal apparatus determines a line which is to be given the priority between an uplink or downlink, according to an application activating operation from an operator, and then makes a request accordingly to a base station apparatus. The base station apparatus detects a request signal on a downlink or uplink to be prioritized. If the request signal indicates that the downlink be prioritized, the execution of a processing of changing a transmission rate of the uplink involving the stoppage of the downlink is cancelled. If the request signal indicates that the uplink be prioritized, the execution of a processing of changing a transmission rate of the downlink involving the stoppage of the uplink is cancelled.

Abstract: A radio system may provide dedicated uplink channels and HSUPA channels for user terminals. When the radio resource controller receives a request for an uplink transmission of an HSUPA channel, the radio resource controller may allow the uplink transmission through the HSUPA channel if the total throughput of the HSUPA channels is below a predetermined threshold.

Abstract: To provide a technique of making it possible to shorten a time taken by channel switching. Further, to provide a technique of enabling simplification of a channel switching procedure. A radio network controller for assigning, to each wireless terminal connected to a wireless network, one of an individual channel exclusively used by the wireless terminal and a common channel shared with at least one wireless terminal different from the wireless terminal as a communication channel, includes: a determination portion for determining that an individual channel is to be assigned to a wireless terminal; and an assignment portion for, when the assignment of the individual channel has been determined, assigning an individual channel resource secured and held before the determination to the wireless terminal.

Abstract: A mobile station (300) for making access points enter protection modes includes a scanning module (310), a dummy module (320), and a dummy access point (330). The scanning module scans an access point (10) not entering a protection mode. The dummy module produces the dummy access point. The dummy access point includes a data producing module (331), an interval setting module (332), and a transmitting module (333). The data producing module produces a beacon frame for triggering the access point to enter a protection mode. The interval setting module sets a beacon interval. The transmitting module broadcasts the beacon frame during each beacon interval. A method for making access points enter protection modes is also provided.

Abstract: Embodiments of the present invention provide for downlink and uplink control feedback signaling. Other embodiments may be described and claimed.

Abstract: A method for allocation of multi-carrier transmission resources to terminal devices in a network cell of a radio access network, the transmission resources being dividable into symbol-duration time spans in a time domain and into a plurality of sub-carriers in a frequency domain, comprises allocating to a respective terminal device a group of consecutive symbol-duration time spans in the time domain and at least one respective sub-carrier block in the frequency domain, the at least one respective sub-carrier block being formed by a group of respective consecutive sub-carriers. The allocating comprises allocating a respective sub-carrier block and the group of symbol-duration time spans according to one respective allocation type, which is either a localized or a distributed allocation type, the localized allocation type allocating them to one respective terminal device, and the distributed allocation type allocating them to a respective set of terminal devices.

Abstract: Disclosed is a technique which enables a mobile node to promptly and continuously get an additional service (e.g., QoS guarantee) before and after the handover. According to the technique, a mobile terminal (MN 10) determines execution of a handover between subnets based on a predetermined condition, configures an NCoA, and acquires information on an adjoining mQNE (a node capable of changing a QoS path) 41 on the QoS path of the MN 10. The MN sends an FBU message and adjacent mQNE information to an oAR 21. The oAR forwards the adjacent mQNE information received from the MN, together with an HI message, to an nAR 31, which establishes a (C)QoS path with the mQNE for the MN based on the adjacent mQNE information.

Abstract: The present invention discloses a technique to reduce packet loss during the handover of a mobile terminal and to eliminate wasteful consumption of band. According to this technique, a connection station 103 and a radio base station 104 where a mobile terminal 100 is connected generate a plurality of own MAC addresses based on identification information of the mobile terminal, and when the handover is started, a network management unit 106 makes up a point-to-multipoint VLAN path where VLAN path between new radio base station device and the connection station device is added to the VLAN path between previous radio base station device and the connection station device, and the connection station device adds a broadcast address, a MAC address of the connection station device, and an identification information of the mobile terminal to a packet received from the external IP network 101, and the packet is transferred via the point-to-multipoint VLAN path.

Abstract: A method and apparatus for requesting PPP instances from a packet data services network includes a mobile station configured to send an origination message to a packet data service node (PDSN) at which it has arrived upon leaving the vicinity of another PDSN. The message informs the new PDSN of the new location of the mobile station and indicates both the number of dormant PPP instances associated with the mobile station and a service reference identifier for each such PPP instance. A flag within the message may be used to indicate whether the PPP instances are dormant (i.e., whether the mobile station is engaged in a call). Communications channel resources of packet data services nodes are optimized by reducing the information included in messages from the Packet Control Function network element to the Packet Data Service Node network element, and by reducing the use of Mobile Internet Protocol agent advertisement.

Abstract: A communication unit (10) includes a mobility agent (225) for providing handoffs between a cellular network and a wireless local area network (11). The communication unit (10) determines if it should switch between the wireless local area network (11) and the cellular network for obtaining service, requests a handoff to the wireless local area network (11) or to the cellular network by sending a SIP message addressed to either a public number (229) or a private number (231) associated with the communication unit (10) upon making the determination. The communication unit (10) accepts a new call from an enterprise server (12) over the determined network. Corresponding methods of providing a hand-off is described.

Abstract: An apparatus and method for configuring a subframe to support a relay service in a multi-hop relay BWA communication system are provided, in which a first zone of a subframe is configured for at least one of communication between a BS and a first MS within the coverage area of the BS and communication between at least one RS and a second MS within the coverage area of the at least one RS, and a second zone of the subframe is configured for at least one of communication between the BS and the at least one RS and communication between the at least one RS and another RS.

Abstract: When it is possible to connect a radio communication terminal only at substantially the same frequency as is used in radio communication in a radio base station, and using a slot overlapping the slot used in the radio base station, the radio base station transmits a signal including power control notification for notifying the radio communication terminal to lower transmission power from the radio communication terminal to a predetermined power, with which communication is still maintained, to the radio communication terminal at the transmission power lowered to the predetermined power, causes the radio communication terminal to make connection at transmission power at a controlled power value, and starts packet transmission.

Abstract: Embodiments described herein include methods for improving the SINR, and therefore communication quality or rate, in the downlink of a cellular communication system. In an embodiment, the system is an orthogonal-frequency-division multiple-access (OFDMA) system. In an embodiment, a set of terminals is designated a coordinated-transmission group. The set of terminal is chosen such that the slot-allocations of the set are given special treatment to alleviate interference from other sectors or cells. In an embodiment, “zones” defined in the WiMax standard are “repurposed” to handle the coordinated-transmission, although the zone was originally intended for another purpose.

Abstract: A system of physical layer packet format and signaling methods is disclosed, wherein signaling overhead is minimized in applications where multiple users share air interface resources; improving efficiency in orthogonal frequency division multiplexing (OFDM) and orthogonal frequency division multiple access (OFDMA) communication systems.

Abstract: Systems and methods for distributed monitoring of a wireless network using a plurality of wireless client devices in communication with the wireless network.

Abstract: A data distribution system includes a controller communicatively coupled to an origin. A plurality of mobile units capable of storing, receiving, and communicating data pass within communication range of the origin. The controller has data configured for a destination, but the destination is communicatively unlinked from the controller. To communicate the data to the destination, the controller selects a mobile unit passing in range of the origin and communicates the data. The mobile unit has a route at least approximately allied with a geographical location of the destination. The mobile unit stores the data and continues traveling. The mobile unit communicates the data to the destination if in the communication range of the destination unit. Alternatively, the mobile unit communicates the data to another mobile unit if the other mobile unit has a route at least approximately more allied with the geographical location of the destination.

Abstract: A communication system and a method of communicating data. A first backhaul site can be dynamically selected from a plurality of backhaul sites that are each configured to wirelessly communicate with an access point. A controller can dynamically configure a transmission parameter used to communicate a first backhaul data stream between the access point and the first backhaul site. The first backhaul data stream can be derived from a source data stream and can be wirelessly communicated between the access point and the first backhaul site. A second backhaul site also can be selected. A second backhaul data stream also can be derived from the source data stream and wirelessly communicated between the access point and the second backhaul site. The first and second backhaul data streams can be combined.

Abstract: An embodiment of the present invention provides an apparatus, comprising a wireless terminal operable in a wireless local area network (WLAN) and a wireless metropolitan area network (WMAN), wherein the wireless terminal is capable of collaborating terminal position information in the WMAN and terminal position information in the WLAN to determine the position of the wireless terminal.

Abstract: An apparatus and method (300) are disclosed for requesting wireless services with a single reusable authorization code. An apparatus that incorporates teachings of the present disclosure may include, for example, a network management system (NMS) (102) having a controller (108) that manages operations of a communications interface (104) that communicates with wireless access points (WAPs) (114) in a communication system (100). The controller can be programmed to receive (304) from a wireless communication device (WCD) (116) a request for service with a select one of the WAPs, determine (306) from the request an identity associated with the WCD, determine (316) from the identity one or more service attributes corresponding to the WCD, and establish (318-324) service between the WCD and the WAP according to the one or more service attributes. Additional embodiments are disclosed.

Abstract: A method and apparatus of a first wireless access node authenticating a second wireless access node is disclosed. The method includes the first wireless access node receiving a network advertisement from the second wireless access node, and the first wireless access node interrogating the second wireless access node by transmitting an A token. If the first wireless access node receives a response from the second wireless access node to the A token, and the response includes a B token which is cryptographically bound to the A token, and cryptographically bound to the first wireless access node and the second wireless access node, and a shared secret, then the first access node identifies the second wireless access node as friendly.

Abstract: A method, mobile station, and software product are used to select an access point in a wireless local area network (WLAN) for access by the mobile station. This is accomplished by calculating a preference value for each of a plurality of the access points, based upon information regarding current communication characteristics of the access points. That information includes physical signal characteristics of the access points, and current channel loads of the access points, and also the traffic type affecting the current channel loads of the respective access points. The information about channel loads is weighted differently based upon the corresponding traffic types, and may also be calculated differently depending upon whether or not the mobile station is set up to utilize multimedia traffic.

Abstract: A receiver in a wireless local area network capable of receiving and processing plurality of frames that are separated by a reduced interframe spacing interval. . Upon receiving a frame, the receiver determines whether the received frame is using Reduced Interframe Spacing intervals. When the received frame includes a RIFS indicator, acknowledgment of the received frame is suppressed, and subsequent frames of the plurality of frames are received at a RIFS interval.

Abstract: A location system of a configuration that facilitates initial introduction, maintenance, and system expansion. A terminal location system basically has at least (N+1) base station (here, N=1 to 3) and a location server and finds a position of a terminal performing wireless communication in N-dimensional coordinates. Further, the terminal location system calculates distances among the at least (N+1) base stations, finds relative coordinates of the base stations, evaluates the obtained relative coordinates, determines switching to terminal location processing of finding the position of the terminal, and finds the position of the terminal using propagation times of radio signals transmitted/received among the terminal and the base stations and the obtained relative coordinates of the base stations.

Abstract: The present invention is directed to providing method and apparatus for implementing a uniform platform for data/voice service. An apparatus for implementing a uniform platform for data/voice service provided in the present invention comprises a base station controller and a Multi-BSSFast Packet Server, characterized in that said base station controller and Multi-BSSFast Packet Server are integrated into one rack, and the base station controller is connected to the Multi-BSSFast Packet Server via a link based on E1 over Ethernet (E1oE).

Abstract: A method for updating and retrieving information for one or more nodes includes sending an update of at least a first indicator from at least a first node of a group of nodes to a home agent. Each of the group of nodes is associated with the home agent and corresponds to at least one of a plurality of indicators. The plurality of indicators is related to an internet protocol and includes the first indicator. The method further includes sending a request to the home agent for group node information that is associated with at least information related to the plurality of indicators corresponding to the group of nodes. Additionally, the method includes receiving the group node information from the home agent and transferring the group node information to one or more applications capable of accessing all the group of nodes.

Abstract: To provide a portable terminal that can establish an ad hoc network by operating existing communication unit without requiring a burdensome operation of manually exchanging ad hoc setting information. The distribution determination section of a receiving portable terminal compares a message digest that is calculated by a telephone calling application from a received telephone number and one received by the short-distance wireless communication section. If the values of the message digests match, the distribution determination section informs the user that the calling portable terminal is capable of ad hoc communication such as on a liquid crystal display.

Abstract: A wireless LAN mobile station stores a threshold value serving as a criterion for executing a handover process and which is increased on the basis of other conditions in addition to a received signal strength indicator (RSSI) so as to facilitate the execution of the handover process and expedite the breaking of association with the current association device, thereby allowing the wireless LAN mobile station to make an association with an optimal association device.

Abstract: A wireless LAN mobile station is capable of decreasing the frequency of handovers. The wireless LAN mobile stations 1-1 to 1-N are configured to calculate the number of executing the handover processes in unit time and change a threshold value serving as a criterion for executing the handover process on the basis of the calculated number of handovers.

Abstract: In an example embodiment, there is described herein a method for providing quality of service during a contention period. A tiered access protocol enables an Access Point to act as a channel arbitrator and gain control a channel during a contention period. The Access Point waits a specified amount of time before taking control of a channel for either transmitting an outbound frame or initiating Polled-Contention Free Bursts. In addition, a method for increasing the time span between Delivery Traffic Indication Message beacons by tracking when Wireless Stations are able to receive messages and instantly delivering messages to those Wireless Stations.

Abstract: The invention relates to a reception method for communication over frequency-selective channels with a plurality of send antennas and a plurality of receive antennas, to process data received by the receive antennas that, on sending, was successively modulated and spread. To this end, reception uses: first linear filtering (202, 202?); first interference subtraction (201) that uses an estimate of previously regenerated multi-antenna interference (MAI) and intersymbol interference (ISI); second linear filtering (205, 205?); second interference subtraction (204) that uses an estimate of previously regenerated multi-user interference (MUI); processing to generate an MAI+ISI interference estimate and an MUI interference estimate for the received data from the data filtered in this way. The invention relates further to a reception system adapted to implement the method and a transmission system including the reception system.

Abstract: A method and a telecommunication system for appointing a frequency assignment mode and ratio for providing a broadcast/multicast service are disclosed. The system includes at least one access terminal (AT) for receiving a 1xEV-DO service or the BCMCS through a 1xEV-DO system, a base station manager (BSM) for receiving BCMCS control information containing the FA mode and/or the BCMCS assignment ratio and transmitting the received BCMCS control information to a 1xEV-DO access network controller (ANC), and an access network including a 1xEV-DO access network transceiver subsystem (ANTS) and the 1xEV-DO access network controller for temporarily storing the received BCMCS control information and controlling a sort and/or a ratio of a message, which is transmitted to each access terminal, according to the FA mode and/or the BCMCS assignment ratio contained in the BCMCS control information.

Abstract: The present invention relates to a wireless communication device and a wireless communication method that improve a throughput without increasing an overhead of a wireless frame. The wireless communication device performing communications by using a wireless frame containing a control channel and a data channel, for improving the throughput without increasing the overhead of the wireless frame, comprises a structuring unit allocating, as second control information, part of control information used for communication control to the data channel with respect to a transmitted wireless frame to be transmitted to one other wireless communication device.

Abstract: Provided is an apparatus and method for processing data in a wireless network. The method includes receiving packet data transmitted in a downlink transmission interval, determining whether a current state is one in which processing of the packet data is possible; and if processing of the packet data is not possible, writing a pause bit for requesting hold of packet data transmission in a reserved bit of a Medium Access Control (MAC) header before transmission.

Abstract: Allocation of a wireless communications system channel resource is managed by utilizing traffic segment allocation. This is realized by partitioning the channel resource into an assignment channel and a traffic channel in a fixed manner. The assignment channel includes assignment segments and the traffic channel includes traffic segments. The traffic segment is the basic traffic channel resource unit used to transport traffic data and has a prescribed finite time interval and bandwidth. Each traffic segment is associated with a so-called assignment segment in a prescribed manner. One or more traffic segments may be associated with a particular assignment segment. A base station broadcasts via an assignment segment which wireless terminal is to use a particular traffic segment. This is realized by transmitting a simply identifier for the particular wireless terminal assigned to the particular traffic segment in the assignment segment.