Abstract: A communication system that allows a soft handoff to be completed, even when the communications link between the active base station and the mobile station deteriorates before the mobile station has received the handoff direction message. The mobile station maintains a list of base stations that the mobile station is in communication with, referred to as an “Active Set”. In addition, the mobile station maintains another list of base stations that are proximate to the base stations in the active set. This list is referred to as the “Neighbor Set”. In accordance with the disclosed method and apparatus, the mobile station places a base station in the active set upon including the base station in a pilot strength measurement message (PSMM). The mobile station monitors transmissions from all of the base stations on the active set to receive a handoff direction message (HDM).

Abstract: Disclosed is a system and a method for performing handover in a Worldwide interoperability for Microwave Access (WiMAX) mobile communication system supporting broadband wireless access. The system includes a plurality of Mobile Stations (MSs); at least one distributed antenna having the ability to perform simultaneous communications with the plurality of MSs; and a base station connected to the at least one distributed antenna through optical fibers for performing communications and handovers with the multiple MSs.

Abstract: It is difficult to perform handover between mobile terminals. In addition, when a session handover is performed between terminals whose mobilities are managed by individual Mobile IP HAs, it is difficult for an IETF standard to normally treat an Uplink packet. A network system includes: a function 9 that manages bind information between terminals which are arranged in a network and are subjected to the control of a user; a function 5 that translates an address; a function 7 that performs encapsulation between HAs; and a function that is provided in a terminal and transmits the bind information and a handover trigger to the bind information management function 9.

Abstract: A method and apparatus in a mobile switching center (MSC) performs a tandem handoff in a wireless communication network. The serving MSC receives a handoff request from a serving base station (BS) for a handoff to a target BS of a target MSC. When the serving MSC does not have physical handoff trunks, the serving MSC sends a tandem handoff request to a tandem MSC.

Abstract: A wireless communication system delivering neighbor information (NBR-INF) and a base station and a wireless communication device thereof are proposed. The wireless communication system includes at least a mobile station and a base station. The base station decides delivering the NBR-INF triggered by events, determines type of the NBR-INF to be delivered and determines a delivery rule of the NBR-INF to be delivered. The mobile station, wirelessly connected to the at least a base station, receives the NBR-INF delivered from the at least a base station, and decides to completely renew or partially update its own neighbor information contents.

Abstract: A method for optimizing handover behavior in a mobile radio network includes: a) determining, during a first period of time, the handover behavior of at least one base station of the mobile radio network, with current configuration values of the handover parameters of the at least one base station; b) evaluating a current configuration of the at least one base station based on the determined handover behavior during the first period of time; c1) in the case that step b) does not indicate a need for optimization: repeating steps a) and b); or c2) in the case that step b) indicates a need for optimization: setting an optimization parameter A to a maximum value Amax; and d) modifying configuration values of at least one handover parameter.

Abstract: A neighboring cell processing device includes: a measurement information acquisition unit 11 for acquiring measurement information which indicates a result of measurement of radio signals transmitted from a plurality of wireless base station devices other than a target wireless base station device, based on information provided from at least either of wireless terminal devices or wireless base station devices; and a neighboring cell information generation unit 12 for generating, based on the measurement information acquired by the measurement information acquisition unit 11, neighboring cell information which indicates one or a plurality of wireless base station devices located in the neighborhood of the target wireless base station device, among the plurality of wireless base station devices other than the target wireless base station device.

Abstract: A mobile communication system includes a first base station which defines a first cell and a second base station which defines a second cell. In this mobile communication system, when communication conditions of a first mobile station currently radio-linked to the first or second base station have degraded, then the first base station stores identification information of a second mobile station currently radio-linked to the first base station and causes the second mobile station to hand over to the second cell, and thereafter changes a first radio frequency currently used in the first cell to a second radio frequency and sends the second base station a message that carries identification information of the second mobile station and information indicating the second radio frequency. When the message is received, the second base station causes the second mobile station to hand over to the first cell.

Abstract: To perform handoff of a mobile station from a source wireless network controller of one wireless access technology to a target wireless network controller of a different wireless access technology, a first message for initiating a handoff is sent from the source wireless network controller to the target wireless network controller. The source wireless network controller receives, from the target wireless network controller, a second message responsive to the first message, where the second message contains information to enable identification of cell segments neighboring the target wireless network controller for which signal strength measurements are to be performed. In response to the second message, signal strength measurements made by the mobile station are received by the target wireless network controller.

Abstract: A group transfer function (GTF) receives a plurality of inputs and media for delivery to a plurality of mobile devices. The mobile devices are served by a plurality of cells potentially having a plurality of different radio access technologies such that each mobile device is wirelessly connected to one of the cells. The GTF applies policy rules to the inputs to determine, for each mobile device, content delivery using point-to-multipoint or point-to-point media transport based on the capabilities of the servicing cell. The GTF initiates an allocation of a set of resources in each cell to transport the media to each mobile device in the group using the determined media transport for that mobile device. Media is then replicated by the GTF for delivery to the mobile devices over the allocated resources.

Abstract: A system, method and apparatus for facilitating handoff of communications with a user device between a first communication network having a first domain technology, and a second communication network having a second domain technology different from the first domain technology, the system, method and apparatus includes an anchor point that establishes a first service flow with the first communication network, and a second service flow with the second communication network based upon a triggering event respectively, with the user device, and a handoff device that receives at least one handoff parameter for determining a handoff operation of the user device from the first communication network to the second communication network.

Abstract: A method of communicating signals in a mobile communication system having a first base station, a second base station, and a base station controlling node controlling the first base station and the second base station is presented. The method includes during a handover, receiving, at the first base station, a control message from the second base station including a sequence number indicating at least one data unit to be transmitted to a mobile station or to be received from a mobile station, wherein the first base station receives the control message from the second base station without being controlled by the base station controlling node.

Abstract: Automated PilotPN code conflict resolution using an access point with the assistance of one or more access terminals is disclosed. An exemplary method includes determining a set of access points, as well as determining a set of PilotPN codes used by the set of access points. Detection is then made concerning whether at least two access points of the set of access points have conflicting PilotPN codes. A first PilotPN code is allocated to one of the at least two access points having conflicting PilotPN codes. Additionally, one or more other PilotPN codes, which are distinct from the first PilotPN code, are allocating to remaining access points of the at least two access points having conflicting PilotPN codes. Corresponding apparatus and other exemplary methods are also disclosed.

Abstract: A method and apparatus for cell change order including issuing or receiving a cell change order message to find a target cell in a network with no compressed mode measurement, performing a power scan on the network to find a suitable cell if the target cell is not found, and camping on the suitable cell if found. In one aspect, the network is a 2G network. In yet another aspect, the network is a GSM network.

Abstract: A mobile communication method according to the present invention includes: transmitting, from a mobile station (100) to an access node (200) in a first radio access technology, a connection request signal including a desired call type for communication and a radio access capability of the mobile station (100); determining, at the access node (200) in the first radio access technology, whether or not to perform handover to a second radio access technology on the basis of the desired call type for communication and the radio access capability of the mobile station included in the connection request signal; and transmitting, from the mobile station (100) to an access node in the second radio access technology, a connection request signal, when it is determined that the handover to the second radio access technology is to be performed.

Abstract: Provided is a handover method, in which a call manager of a network having a Circuit Switching (CS) network, a Long Term Evolution (LTE) network, and an Internet Protocol Multimedia Subsystem (IMS) network, provides handover, from the LTE network to the CS network, to a terminal that uses one radio channel. The handover method includes upon receiving a request for handover from the terminal via a node of the LTE network, establishing a line to a Mobile Switching Center (MSC) of the CS network; sending, to the call manager, a request for a change in a session to another party's terminal in communication with the terminal, to establish an Internet Protocol (IP) bearer between the call manager and the other party's terminal; and sending a handover command to the terminal during the establishment of an IP bearer, to establish a radio channel to the base station of the CS network.

Abstract: Methods of handing off an access terminal in a meshed wireless system is disclosed. Data that is received by an access point in the meshed wireless system may be routed to an access terminal via a downstream serving access point. The access point may also be configured to communicate a connection state of the access terminal to a target access point if a handoff of the access terminal from the serving access point to the target access point is requested.

Abstract: Methods and apparatus of managing a communication system, wherein a decision regarding a level of activity at a first end is made based at least in part on the level of activity at the second end. In one embodiment, the energy level of a first-end audio signal is measured. The first end is declared voice-active if the first-end energy level is greater than or equal to a first threshold value. The first end is declared voice-inactive if the first-end energy level is less than the first threshold value. To determine the value of the first threshold value, the energy level of a second-end audio signal is measured. If the second-end energy level is greater than or equal to a second threshold value, the second end is declared voice-active, in which case the first threshold is maintained at a relatively high level. If the second-end energy level is less than the second threshold value, the second end is declared voice-inactive, in which case the first threshold is maintained at a relatively lower level.

Abstract: Technologies are described herein for managing the IP addresses of outbound e-mail messages based on sender reputation. A range of reputation scores is divided into a number of reputation segments, each covering a span of the reputation scores. The available IP addresses are distributed evenly among the reputation segments. The span of reputation scores for each of the reputation segments may be periodically adjusted based on historical data regarding a volume of e-mail messages sent by sender reputation score. In order to select a source IP address for a particular outbound e-mail message, the reputation segment encompassing a sender reputation score regarding the sender of the e-mail message is determined. An IP address is selected from the IP addresses assigned to the reputation segment and returned to be utilized as the source IP address in sending the outbound e-mail message.

Abstract: Apparatus and method for handing over, at a time instance, a first low power radio frequency transceiver participating in a first network of low power radio frequency transceivers using first network parameter(s) and controlled by a first master transceiver from the first network to a second network of low power radio frequency transceivers using second network parameter(s) and controlled by a second master transceiver. An indication of the time instance is sent to the first low power radio frequency transceiver. An indication of the time instance is also sent to the second master transceiver. An indication of the second network parameter(s) is sent to the first low power radio frequency transceiver. The first transceiver switches from using the first network parameter(s) to using the second network parameter(s) at time the time instance. The second master transceiver polls the first transceiver at the time instance using the second network parameters.

Abstract: A method of coordinating resources for repetition of random access bursts performed by a mobile terminal, the method comprising: determining groups of access slots based on parameters from a network, wherein each access slot is defined by any combination of frequency, time and code, and the access slots are organized according to a frequency pattern; transmitting an access burst on an access slot from a chosen group of access slots; and re-transmitting the access burst on the next access slot from the chosen group of access slots.

Abstract: A handoff access method and device based on a random access channel is provided, the method comprising: a source BS sends a handoff request message to a target BS; the target BS sends a handoff response message to the source BS, and then the source BS forwards a handoff command with the content of the handoff response message to the mobile terminal, wherein a sequence number of a reserved character code allocated by the target BS to the mobile terminal and a random access sub-channel that the reserved character code is located in are contained in the handoff command message; after receiving the handoff command message, the mobile terminal selects the reserved character code and the random access sub-channel that the reserved character code is located in; and a handoff access procedure is initialized on the random access sub-channel by the target BS and the mobile terminal.

Abstract: A Mobile Subscriber Station (MSS) and an active Base Station (BS) for measuring/reporting a channel quality in a broadband wireless access communication system. The MSS includes a receiver for receiving, from an active BS, channel quality measurement information for the MSS to measure channel qualities of the active BS and a plurality of neighbor BSs, and channel quality report information defining a report mode for the MSS to report measured channel qualities of the active BS and the plurality of neighbor BSs, a processor for measuring the channel qualities of the active BS and the plurality of neighbor BSs according to the channel quality measurement information, and a transmitter for reporting the measured channel qualities of the active BS and the plurality of neighbor BSs to the active BS according to the channel quality report information.

Abstract: The present invention is directed to a system and method which base stations send informational messages to neighbor base stations when conditions change, so that the neighbor base stations can update its database to keep itself current on the parameters (including availability, traffic load, modulation scheme, etc.) to use in effecting efficient base station to base station handoffs. In one embodiment, the receiving base station marks the time of the received message from a neighbor base station and if a new updated message is not received within a time window then the receiving base station assumes that there is a problem with that neighbor.

Abstract: A method includes modifying at least one communications protocol packet being passed between at least one of a plurality of portable base stations and a core network, such that the core network considers the plurality of portable base stations as a single base station.

Abstract: Wireless transceiver apparatus for operating in a part of the RF spectrum which is shared with a co-located second wireless transceiver apparatus. The first wireless transceiver apparatus includes, a wireless transceiver unit; an arbitration interface for interfacing with an arbitration entity which arbitrates access to the shared part of the RF spectrum between the first wireless transceiver apparatus and the second wireless transceiver apparatus; wherein the arbitration interface is adapted to signal time periods when the wireless transceiver unit is operational, or requests to be operational; and wherein the arbitration interface is adapted to signal data about and commands to the arbitration entity during other time periods. An enhanced arbitration entity is adapted to automatically detect and switch between two modes of interference reduction, e.g. a first interference reduction means such as AFR, a second interference reduction means such as PTA.

Abstract: A method and an apparatus for allocating femto cell allocation information to support handover from a cell of a Base Station (BS) to a femto cell in a wireless communication system are provided. The method includes setting a start frequency of a beacon signal to be different from a start frequency of a neighbor femto cell, sequentially hopping a beacon frequency beginning from the start frequency, and allocating new femto cell information based on the frequency hopping.

Abstract: In accordance with aspects of the present invention, a method, apparatus and system for non-contention based handover based on pre-reserved target cell uplink allocations in communication systems. In one embodiment, the apparatus includes a transceiver (760) configured to communicate with a source base station and a data processor (750) coupled to the transceiver (760). The data processor (750) is configured to produce a measurement report based on a signal received from the source base station, initiate transmission of the measurement report to the source base station, process a handover command received from the source base station, and enable transmission of access bursts to a target base station in a reserved window of time on an uplink shared channel.

Abstract: A base station, a femtocell, and a handover monitoring method thereof are provided. A wireless network system comprises a server, a mobile device, the base station, and the femtocell. The base station transmits a monitoring signal to the femtocell after it obtains a piece of information corresponding to the mobile device from the server. The femtocell keeps detecting whether a signal is transmitted by the mobile device after it receives the monitoring signal. The femtocell transmits a response signal corresponding to the monitoring signal to the base station after it detects the signal transmitted by the mobile device. The base station transmits a handover signal to the mobile device after it receives the response signal so that the mobile device handovers from the base station to the femtocell. A handover monitoring from the base station to the femtocell for the mobile device is provided by the hand monitoring method.

Abstract: Systems and methods for Wi-Fi roaming. A gateway supports both a local access point (AP) and a virtual AP. The local AP is accessible only to an “owner” of the gateway. The virtual AP (VAP) is accessible to devices associated with the owner of the gateway and to roaming Wi-Fi devices. A datastore conveys information about the roaming Wi-Fi devices to the VAP to permit them to access the VAP without the need for manual configuration of the VAP. A roaming Wi-Fi device may communicate with a gateway via a tunnel to maintain session connectivity during roaming. A session may be initiated on one network, such as a Wi-Fi network or a cellular network, handed off to another network, such as a cellular network or a Wi-Fi network, and then returned to network on which the session was initiated.

Abstract: A radio access device includes a controller signal processing unit (RNSAP unit) that processes a signal exchanged with a radio network controller (RNC); and a switching center signal processing unit (RANAP unit) that processes a signal exchanged with a switching center. The RNSAP unit requests to establish a communication path between the radio access device and the RNC and a communication path between the RNC and a BTS by transmitting a request signal to the RNC. Subsequent to receiving an acknowledgement signal corresponding to the request signal from the RNC, the RANAP unit requests to establish a communication path between the switching center and the RNC. Subsequent to receiving, by the RANAP unit, an acknowledgement signal corresponding to the request signal from the switching center, a communication path between the radio access device and the UE is released.

Abstract: An access gateway device is disclosed that is used in a mobile communication system and that is capable of storing an identifier of a tracking area in which a mobile station in communication is located. The access gateway device includes a table unit storing a table having a corresponding relationships between a tracking area and a base station managing a cell included in the tracking area; a tracking area identifier comparison unit referring to the table at a predetermined timing, detecting the identifier of the tracking area in which the mobile station is located, and comparing the detected identifier of the tracking area with the stored identifier; and a tracking area identifier notification unit notifying the mobile station of the detected identifier of the tracking area when the detected identifier of the tracking area is different from the stored identifier based on a result of the comparison.

Abstract: The basic concept of the invention is to expand the capabilities of the MSC Server enhanced for SR-VCC and of the SCC AS to support a “session transfer revocation” procedure. To allow for such procedure it is envisaged that a MSC-Server enhanced for SR-VCC being involved in a Handover procedure for a call from a source RAN, e.g. E-UTRAN/UTRAN HSPA, to a target RAN, e.g. GERAN/UTRAN CS, sends an indication that a session transfer for said call should be performed towards the target RAN. Once the MSC-Server receives from a mobility management entity, such as MME or SGSN, of the source RAN an indication that a relocation request having initiated the session transfer indication is canceled, the MSC-Server may send an indication that the session transfer should be cancelled towards the SCC AS in the IMS which has performed the session transfer.

Abstract: A user apparatus in a mobile communication system includes: a unit configured to receive a downlink control signal using a frequency of a residing cell; and a unit configured to perform cell search using a frequency different from the frequency of the residing cell during an interval between reception timings of the downlink control signal in response to an occurrence of a predetermined event for different frequency measurement in the user apparatus or a base station apparatus. When the reception timing interval of the downlink control signal is not longer than the threshold reported from the base station apparatus, and when the predetermined event for different frequency measurement occurs in the user apparatus or the base station apparatus, different frequency measurement is performed in a cycle, different from the reception timing interval, reported from the base station apparatus.

Abstract: The invention concerns a method and an apparatus implementing the method. In the method is received a neighbor cell relation list and a request to report new cells not included in the neighbor cell relation list to the mobile node to a mobile node. The mobile node detects at least one new cell not included in the neighbor cell relation list and stores information regarding the at least one new cell not included in the neighbor cell relation list in a memory. The mobile node determines whether a threshold number of new cells not included in the neighbor cell relation list have been stored in the memory of the mobile node. In response to reaching the threshold number, the mobile node preparing for transmitting the information regarding the at least one new cell not included in the neighbor cell relation list to a radio network node.

Abstract: A network element is disclosed. The network element has a processor programmed to promote sending an event mechanism to promote a handoff between disparate telecommunications networks. The event mechanism comprises a mobility event comprising a mobility information element and a mobility state element. The mobility information element comprises a type element and a mobility parameters element.

Abstract: There is provided a communication control device including a radio communication unit communicating with a terminal device, a network communication unit accessing any one of a plurality of gateway apparatuses through a network and relaying communication between the terminal device and the gateway apparatus, and a control unit switching the gateway apparatus to be accessed by the network communication unit.

Abstract: The present invention relates to the technical field of wireless communications, is used for optimizing an energy saving mechanism, and provides a method for energy saving compensation, which method comprises: expanding, by a base station, a signal coverage area to form a new cell, when the energy saving activation requirements are met, so as to allow an energy-saving cell managed by the base station to switch users to the new cell and to activate the energy saving state; and when energy saving deactivation requirements are met, and if the energy-saving cell managed by the base station deactivates the energy saving state, then switching, by the base station, the users to the energy-saving cell and reducing the signal coverage area. The present invention optimizes currently available energy saving mechanisms and provides a solution capable of compensating the service loss of energy-saving cells.

Abstract: A system and method are described for reducing congestion in a wireless network. A wireless base station becomes congested when substantially all of the available base station airlink resources are being used during a period of time. It is useful, however, to distinguish between periods of congestion with few users and periods where a larger number of users are using the base station. When there are few users a congestion situation is not necessarily a problem, while it is more likely that users' quality of experience and quality of service suffers as the number of users increases. This system and method determines when a base station is congested and implements a congestion prime management scenario when the number of active users is above an activity threshold.

Abstract: A system, method, and computer readable medium for a softer handoff comprises receiving a Pilot Strength Measurement Message (PSMM) to request a handoff by a selector distribution unit (SDU), receiving a softer handoff request message by a channel element control (CEC), receiving a softer handoff request message by a radio call control (RCC), receiving a traffic channel assignment message by the CEC, and receiving an indication of an addition of a new sector for the softer handoff by the SDU.

Abstract: A wireless service of a first type is scanned. A first station associated with the first type is selected. A first indicator of expected service conditions associated with the first station is received. Based on the first indicator, a wireless service of a second type is scanned. A second station associated with the second type is selected. A second indicator of expected service conditions associated with the second type is received. Based on the first indicator and the second indicator, one of the first type and second type is selected to receive wireless service.

Abstract: A method and devices for performing a handover of a data unit based communication that involves a sequence of data units from a first connection (51) between a first sender (10) and a receiver (4) to a second connection (52) between a second sender (20) and said receiver (4), which comprises indicating to the receiver (4) a reference data unit among data units provided to both the first sender (10) and the second sender as a part of the handover, and where the receiver, based on the reference data unit, keeps a record for identifying such data units among those data units provided to both the first sender (10) and the second sender (20) that were sent over the first connection (51) and successfully received by the receiver (4), prior to the communication having been passed to the second communication (52).

Abstract: Disclosed are methods of executing a handover related operation in a power saving mode in accordance with handover triggering information. One of the methods of executing handover of a mobile station in a mobile communication system comprises determining an enabled status of at least one handover related operation in a specific operation mode between the mobile station (MS) and a network, receiving control information related to the at least one handover related operation from the network, entering the specific operation mode, changing the enabled status of the at least one handover related operation in the specific operation mode, and performing the enabled handover related operation in accordance with the changed enabled status and the control information.

Abstract: A first access point located in a first cell may be coupled to a second access point located in a second cell. Service may be initially provided to an access device by the first access point cell. The access device may subsequently be serviced by a second access point whenever a signal for the access device falls below a specified threshold level. The second cell may be a neighboring cell, which may be located adjacent to the first cell. A first signal may be transmitted from a first beamforming antenna coupled to the first access point, to the second access point via an uplink channel. Similarly, a second signal may be transmitted from a second beamforming antenna coupled to the second access point, to the first access point via a downlink channel. The uplink and downlink channels may be a backhaul channel.

Abstract: A wireless device includes at least one processor operable to transmit authentication information to one of a plurality of access devices associated with a first wireless hotspot; and establish an access session with the one of the plurality of access devices. Information related to the access session is saved in memory accessible by a plurality of wireless access providers. When the wireless device moves from a coverage area of the first wireless hotspot to a coverage area of the one of the plurality of wireless access providers, the saved information facilitates access to the one of the plurality of wireless access providers by the wireless device.

Abstract: A system and method of facilitating handoff of communications with a mobile terminal between a first wireless access network and a second wireless access network having different air interfaces. The system and method including pre-registering the mobile terminal in the second access network prior to handoff, while the mobile terminal is conducting a communication session using the first access network. Upon a determination that a handoff is needed, communication is transparently tunneled to the secondary access network through the primary access network. During tunneling, the air link of the first wireless access network is employed to communicate with the secondary access network to facilitate the handoff.

Abstract: Various exemplary embodiments relate to a method performed by a policy and charging rules node of provisioning event triggers. The method may include: receiving, from a requesting node, a request to provision a set of event triggers on a primary gateway; forwarding, to the primary gateway, the set of event triggers; storing the set of event triggers in association with a session; detecting a handover of the session; determining a new primary gateway; and forwarding, to the new primary gateway, the set of event triggers. The method may further include: receiving a message; determining whether the message includes the same set of event triggers; if the message includes the same set of event triggers, refraining from sending the set of event triggers to the primary gateway; and if the message includes a different set of event triggers, forwarding the different set of event triggers to the primary gateway.

Abstract: A radio communication device including a receiver configured to receive radio signals, a measurement circuit configured to measure the receiving quality of received radio signals, and a controller configured to control the measurement circuit such that a first measurement is carried out using a first frequency bandwidth, thereby determining a first receiving quality, and if the determined first receiving quality fulfills a first receiving quality criterion, a second measurement is carried out using a second frequency bandwidth, wherein the second frequency bandwidth is larger than the first frequency bandwidth, thereby determining a second receiving quality.

Abstract: The present invention provides embodiments of methods for directing traffic between cells of different sizes. One embodiment of the method includes determining, at a mobile unit, whether to hand off from a source cell to a target cell based on information indicating sizes of coverage areas of the source cell and the target cell.

Abstract: Techniques in a wireless device for use in accessing a common data application with a service network which is external to a plurality of wireless networks are described. The device receives a data session configuration file which includes a list of the plurality of wireless networks mapped against authentication credentials associated with each wireless network. The device communicates with a current one the wireless networks. The device selects from the list one of the authentication credentials that is associated with the current wireless network. The device submits, via the current wireless network, the selected authentication credentials for establishing a packet data session via the current wireless network. The device then accesses, via the current wireless network using the packet data session, the common data application with the service network which is external to the current wireless network.