Abstract: Disclosed herein are methods and systems for uplink control feedback design in relation to the high speed dedicated physical control channel (HS-DPCCH). First uplink data may be transmitted on a HS-DPCCH to a first serving cell and a second serving cell, where the first serving cell may be used as a timing reference cell for the uplink transmission. The first serving cell may be associated with a first NodeB and the second serving cell may be associated with a second NodeB. First downlink data may be received from the first serving cell and second downlink data may be received from the second serving cell. A timing reference for uplink transmission may be changed such that the second serving cell may be used as the timing reference cell. Second uplink data may be transmitted on the HS-DPCCH using the second serving cell as the timing reference cell.

Abstract: The present disclosure discloses a method and a network device for efficient mobile client device roaming in a wireless local area network with multiple access points. Specifically, a network device determines a first received signal strength value for a first set of signals transmitted between a client device and a first access point during a first time period; and, determines a second received signal strength value for a second set of signals transmitted between a client device and the access point during a second time period. Based on the first and the second signal strength values, the network device computes a change in signal strength value corresponding to wireless communication between the client device and the first access point. Based on the change in signal strength value, the network device selects the access point from a plurality of access points for providing network access to the client device.

Abstract: Methods, systems, and apparatuses for wireless communication are described. A wireless station (STA) may receive a frame from an access point (AP) reserving a channel for a time period. The frame may include an information field associated with a tune away procedure performed by the AP during the time period. The STA may perform, based on the information field, direct communications with a neighboring device on the channel during the time period.

Abstract: Disclosed are a communication performing method and terminal, and the method is a method by which a terminal with dual connectivity performs communication in a heterogeneous cell environment, in which: a first reporting message reporting that a downlink signal is received from a small cell in an intensity greater than a threshold value is transmitted to a macro cell; an RRC establishment message indicating a connection to a small cell cluster is received from the macro cell; connections are added to a plurality of small cells included in the small cell cluster according to additional time information included in the RRC establishment message; and the connections to the plurality of added small cells are respectively activated according to activation connection time information included in the RRC establishment message, and the small cell cluster is determined on the basis of information on a location relationship among the plurality of small cells.

Abstract: Embodiments of the present invention relate to a method for improving handover performance in a cellular wireless communication system, said cellular wireless communication system employing a handover procedure in which a handover preparation for a mobile station is initiated if a channel quality value between a source cell for said mobile station and said mobile station is less than a channel quality threshold value; said method comprising: tuning said channel quality threshold value based on one or more handover performance criteria used in said cellular wireless communication system. Furthermore, the invention also relates to a device for improving handover performance, a computer program, and a computer program product thereof.

Abstract: Embodiments related to gateway arrangements for wireless communication networks are disclosed herein. For example, in some embodiments, a network controller computing system may include serving gateway (SGW) control plane circuitry to virtualize control plane functions of an SGW, packet data network gateway (PGW) control plane circuitry to virtualize control plane functions of a PGW, first communication circuitry to establish a first secure communication link between the SGW control plane circuitry and an SGW user plane computing system that is to perform user plane functions of an SGW, and second communication circuitry to establish a second secure communication link between the PGW control plane circuitry and a PGW user plane computing system that is to perform user plane functions of a PGW. Other embodiments may be disclosed and/or claimed.

Abstract: The present invention relates to a call processing method and an access network element in a mobile communications system. In a signaling exchange process for setting up a call leg, a call leg identifier that identifies a logical resource allocated by an access network element to the call leg is carried, thereby reducing signaling exchange caused by setup or release of a service link between access network elements in the prior art, saving signaling overhead in a call process, and enhancing call access capabilities of a mobile communications system effectively. In addition, after the service link between the access network elements is set up, service packets can be forwarded between the access network elements in a self-addressing manner.

Abstract: The present invention relates to a wireless communication system, and more specifically, a method and an apparatus for remote-accessing are disclosed. A method for transmitting remote access indication information, according to one embodiment of the present invention, comprises the steps of: generating from a first network node remote access packet data network (PDN) connection indication information with respect to PDN connection of a user equipment (UE); and transmitting the remote access PDN connection indication information from the first network node to the UE, wherein the remote access PDN connection indication information can express whether the PDN connection of the UE is the remote access PDN connection.

Abstract: A method of handling handover for a network of a wireless communication system, wherein a user equipment (UE) is connected to at least one first cell of a master base station and at least one second cell of a secondary base station of the network, includes when the master base station decides to hand over the UE to a target master base station of the network, transmitting, by the master base station, a first message to the secondary base station to instruct the secondary base station to release the at least one second cell.

Abstract: A solution of reconstructing the network topology according to the traffic related information of each cell is proposed in the present invention, so as to achieve self-optimization of network. The traffic related information of a cell includes the traffic related information applicable to network topology reconstruction, or load related information as is named, including but not limited to time-frequency resource related amount that is used by the traffic data in the cell, traffic throughout of each cell or the wireless channel quality of each cell for transmitting traffic data, etc. The solutions in the present invention realize the network topology reconstruction according to traffic related information of multiple cells, therefore the network capacity and service quality could be effectively improved and the wireless relay communication network is applicable to those areas with unpredictable traffic distribution.

Abstract: Handover is a main function that is used to support mobility in the network. In a cellular communication network having adaptive antennas for enabling narrow beam operation, a network control unit sends a radio link setup request to a selected cell-serving network unit for configuration of a new serving radio link. Before responding to the radio link setup request the cell-serving network unit performs uplink measurements with respect to the mobile unit, and a narrow target beam is selected within a cell served by the cell-serving network unit based on these measurements. The cell-serving network unit then configures the new serving radio link for the considered mobile unit directly with the selected narrow target beam. Consequently the system can perform the handover procedure using narrow beams only, without first establishing the radio link with a cell-wide beam and then reconfiguring the radio link onto a narrow beam.

Abstract: A method in a first base station having a first coverage area at least partly overlapping with a second coverage area of a second base station, the first base station operating within a first transmission power range and the second base station operating within a second transmission power range. The method includes determining radio link quality of a user equipment (UE1) connected to the first base station and being located in an adjustable extended coverage range of the second base station; requesting from the second base station, interference related measurements for unused physical channels or for physical channels at least partially overlapping with physical channels used by UE1 and having the radio link quality falling below a threshold value; and deciding for UE1, based on the interference related measurements, whether a handover to the second base station should be performed.

Abstract: A method of improved positioning of a user equipment in a wireless communication network comprises receiving a positioning measurement from a user equipment in the wireless communication network and retrieving bandwidth reduction information. Further, the method includes detecting a deviation in the received position measurement based on the retrieved bandwidth reduction information, managing the received position measurement based on the detected deviation, and determining a position of the user equipment based at least on the managed received position measurement to provide improved positioning for the user equipment.

Abstract: A base station or a UE may use another base station's carrier-aggregation policy for a cell provided by the other base station as a basis to control handover of the UE from being served by the base station to being served by the other base station. As one example, a first base station may use a second base station's carrier-aggregation policy for at least one of multiple co-located cells provided by the second base station as a basis to control handover of the UE from being served by the first base station to being served by the second base station. As another example, a UE may use a second base station's carrier-aggregation policy for one of multiple co-located cells provided by the second base station as a basis to control cell reselection.

Abstract: Provided is a method for configuring a wireless backhaul link by a Mobile Station (MS) in a wireless communication system. The method includes acquiring System Information (SI) for each of an old Base Station (BS) which transmits a first code and a new BS which transmits a second code. The method includes transmitting a message which reports the SI for the new BS to the old BS. The method includes receiving a message indicating that the new BS discards the second code and uses the first code from the old BS, wherein the first code is a code indicating that a related BS is a BS which has been already deployed, and wherein the second code is a code indicating that a related BS is a BS which is newly deployed.

Abstract: A method and system for an enhanced uplink (EU) operation in a wireless communication system during soft handover. The system comprises a wireless transmit/receive unit (WTRU), at least two Node-Bs, and a radio network controller (RNC). One Node-B may be designated as a primary Node-B, and the primary Node-B may control EU operation during soft handover including uplink scheduling and hybrid automatic repeat request (H-ARQ). Soft buffer corruption is avoided during soft handover by controlling H-ARQ by the primary Node-B. Alternatively, an RNC may control EU operation during soft handover including H-ARQ. In this case, an RNC generates final acknowledge/non-acknowledge (ACK/NACK) decision based on the error check results of the Node-Bs.

Abstract: The disclosure relates to accessing a communication system. In accordance with the disclosed method a communication device communicating in a first access system based on an address is transferred to a second access system. The communication device sends an indication that the same address is to be used in the second access system, where after, if proxy mobility is available for the address, the same address is used for communications in the second access system.

Abstract: A cellular communications system end-user transceiver (303) automatically determines (101) at least one received signal strength metric as corresponds to both a presently-utilized base station (307) and at least one presently un-utilized base station (309) to provide one or more corresponding received signal strength values. This transceiver then determines (102) whether to purposefully alter this received signal strength value(s). When deciding to make the alteration, the transceiver automatically alters (104) the received signal strength value(s) to provide one or more corresponding altered signal strength values. The transceiver then transmits (105) the latter in order to influence a handover decision in favor of handing over the transceiver from the presently-utilized base station to the presently un-utilized base station.

Abstract: Various embodiments include systems, wireless modules, and methods for local IP access packet data network release. Handover data can be received at a target wireless module as part of a user equipment handover operation. The user equipment can include an active packet data network session associated with a source local home network. A determination that the target wireless module is not in the source local home network can be made based on the handover data. The target wireless module can trigger deactivation of the packet data network session in response to the determination that the target wireless module is not in the source local home network.

Abstract: In a cell phone telecommunication system having a macrocell and a small cell coextensive with or adjacent to the macrocell and sharing a common frequency band, interference can occur between a user device operating in the small cell, the local base station operating the user devices in the small cell on one hand and another user device serviced by a main base station for the macrocell. In order to reduce this interference, the shape of the transmission beam from at least one of the user devices or base stations is shaped into a narrow beam steered to be directed at the respective receiving unit. Alternatively, the shape of the transmission beam has a null point and the beam is steered so that its null point is directed toward the affected unit.

Abstract: A communication system includes a wireless communication apparatus which comprises a wireless communication unit performing wireless communication with a designated wireless apparatus as a communication correspondent; a state storing unit storing state information which indicates a communication state at each point of time in the wireless communication; a failure determination unit using a predetermined determination criterion to determine at each stage of the wireless communication whether or not a communication failure occurs in the wireless communication; a state acquisition unit acquiring from the state storing unit, when it is determined that a communication failure occurs, state information which indicates a communication state at each point of time during a predetermined time period; and a state sending unit sending via wireless communication the state information to a communication correspondent other than the designated wireless apparatus; and a state information receiving apparatus receiving the sta

Abstract: Distance is employed to facilitate sector selection and re-selection in a network during handoff. A system receives measurement information for a mobile device. The measurement information includes information indicative of a geographical location of the mobile device. The system determines information indicative of a geographical location of a cell site to which the mobile device is assigned. The system then selects a sector of the cell site with which to associate the mobile device. The selection of the sector is based, at least, on a distance determined between the mobile device and the cell site. In various embodiments, the distance information is determined based on the latitude and longitude of the mobile device. In various embodiments, the morphology of the terrain for the area in which the mobile device is located is factored into the determination of the sector.

Abstract: A device and a method for an energy sharing network may include an energy store configured to store energy; an energy transmitter-receiver configured to transmit energy and energy related information to at least one neighbor device and to receive energy and energy related information from at least one neighbor device; and a controller configured to control the energy transmitter-receiver based on a predetermined condition.

Abstract: A method of providing, in a telecommunications network including at least a first and a second set of communication resources, a service to users in a condition of being provided said service both by the first set of communication resources and by the second set of communication resources. The method includes the steps of: upon receipt, through the first set of communication resources, of a service request related to the service from a user, attempting to redirect the service request to the second set of communication resources; and if the attempt succeeds, provisioning the service to the user by the second set of communication resources. The attempt to redirect the service request includes identifying a communication resource among the second set of communication resources, by either considering or not communication resources of the second set as candidates for the service request redirection based on a history criterion that takes into account an observation of the outcome of past redirection attempts.

Abstract: Handover parameter settings are automatically adapted in access points in a system to improve handover performance. Reactive detection techniques are employed for identifying different types of handover-related failures and adapting handover parameters based on this detection. Messaging schemes are also employed for providing handover-related information to access points. Proactive detection techniques also may be used for identifying conditions that may lead to handover-related failures and then adapting handover parameters in an attempt to prevent such handover-related failures. Ping-ponging may be mitigated by adapting handover parameters based on analysis of access terminal visited cell history acquired by access points in the system. In addition, configurable parameters (e.g., timer values) may be used to detect handover-related failures.

Abstract: A method is provided for paging a mobile station (40) served by a wireless telecommunications network (A). The method includes: remembering a last known location of the mobile station (40), and implementing a first paging strategy for the mobile station (40) within a first collection of cells (32) served by a first mobile switching center (20).

Abstract: Embodiments are directed to defining hierarchical digital broadcast transport streams as separate cells, which reduces the signaling in OSI layer 1, and removing use of sub-cells so that the coverage area of a transposer may be treated as a cell. In accordance with at least one embodiment, each hierarchical DVB-H stream (i.e., the HP stream and the LP stream) has its own separate dedicated “current signal” frame. This allows the streams to be independent of each other (even to belong to different networks). Furthermore, in accordance with the hierarchical signal arrangement, a cell can be uniquely identified by its network_id and cell_id. In accordance with at least one embodiment, frequency may be used as an additional identifier thereby allowing a first cell to be transposed to a sub-cell.

Abstract: A method and apparatus for handing off packet-transmission between sectors of a wireless communication system is disclosed herein. During transmission of a packet from an access network to an access terminal, the access terminal determines that the packet should theoretically be transmitted to the access terminal in fewer timeslots in another sector than the number of allowed timeslots remaining for the packet transmission in a current sector. In response, the access terminal abandons packet transmission in the current sector and hands off to the other sector, in an effort to increase throughput and save air interface resources.

Abstract: A method for processing a handover procedure by a user equipment (UE) in a mobile communication system. The method includes receiving, by the UE, a radio resource reconfiguration message from a base station; recognizing, by the UE, a handover type based on a handover type indicator included in the received radio resource reconfiguration message; and performing, by the UE, a first or second handover procedure according to the recognized handover type. The first or second handover procedure is performed if the radio resource reconfiguration message includes mobility related information. The mobility related information includes a target physical cell identity and a new cell-radio network temporary identifier (C-RNTI).

Abstract: The present invention relates to a method, subscriber database, network element, an interface, and a computer program product for distributing position- or network-related information from an access network to a core network, wherein a first interface between the access network and the subscriber database is associated with a second interface between the core network and the subscriber database in a manner so that, in response to at least one predetermined notification indicating a registration or change of position and signaled to the subscriber database via the first interface, the position- or network-related information is selectively signaled via the second interface to a network element of the core network in a server assignment answer or in a push profile request. Thereby, position or location information of a subscriber or user in an access network is directly or automatically availability in the core network.

Abstract: A method of offloading data is provided by a UE. The UE receives data from a macro cell base station over an MC-RB while an E-RAB between the macro cell base station and a gateway is established. The UE receives a first connection reconfiguration message from the macro cell base station after the E-RAB between a small cell base station and the gateway is established, and establishes an SC-RB according to the first connection reconfiguration message. Next, the UE receives a second connection reconfiguration message from the macro cell base station after a path between the macro cell base station and the gateway is switched to a path between the small cell base station and the gateway, and data for the MC-RB are exhausted on the macro cell base station. Then, the UE releases the MC-RB and switches to the SC-RB.

Abstract: A handover control method includes the follow steps. First, determining a geographical location of each femtocell and determining a maximum bandwidth provided by each femtocell, and determining which femtocells are in a same region according to the geographical information of each femtocell. Secondly, selecting one or more femtocells from one region as server femtocells of the region by comparing the maximum bandwidth of the femtocells in the same region, and transmitting identification information of each server femtocell to non-server femtocells near the server femtocell. Thirdly. transmitting registration information of all other femtocells of all regions to each server femtocell. Fourthly, when receiving a handover report from user equipment to switch from an original femtocell to a target femtocell, obtaining the registration information of the target femtocell from one server femtocell. Finally, transmitting a control signal including the obtained registration information to the user equipment.

Abstract: The present invention provides a method for supporting mobility of selected IP traffic offload (SIPTO) by a server undertaking a control plane in a mobile communication network. The method can comprise the following steps: receiving a handover request message for a terminal receiving a SIPTO service by means of a source base station to a target base station; deciding whether to deactivate the SIPTO service; performing a process for disconnecting a public data network connection (PDN) for the SIPTO, based on the decision; and transmitting to the terminal via the source base station a message including information for reactivating the SIPTO after the handover, according to the decision.

Abstract: A method for providing network communication to a wireless device through a plurality of wireless protocol links. A first protocol link from the plurality of wireless protocol links is selected based on some predetermined criteria. A first network connection is established through the first protocol link. A second protocol link from the plurality of wireless protocol links is selected based on the change in status or condition of the first protocol link with respect to the predetermined criteria. A second network connection is established through the second protocol link, and the first network connection through the first protocol link is terminated.

Abstract: A radio terminal (100) according to a present invention stores a handover threshold in association with an application being executed, when the communication quality of the application is degraded, the handover threshold being based on a piece of radio state information equivalent to that at a time when the communication quality is determined to be degraded. The radio terminal (100) stores the amount of variation of the radio state information in association with the radio communication system. The radio terminal (100) executes handover to a different radio communication system on the basis of the radio state information, the stored handover threshold and the stored amount of the variation.

Abstract: The number of handover-related failures that occur in a communication system may be reduced by taking target access point conditions into account when declaring radio link failure and/or by delaying certain handover operations. In some aspects, criteria for radio link failure detection and access terminal-controlled mobility may take into account access point parameters related to neighboring cells that may be available as mobility targets. For example, filtering mechanisms for detecting radio link failure based on radio layer problem reports may also take into account the availability of various neighbor access points and their measured signal strengths. In addition, a handover command may be sent earlier than in conventional systems (e.g., the handover command may be sent even though the target access point is weaker than the source access point) and include an indication that instructs the access terminal to delay handover until a specified condition is met.

Abstract: Embodiments of the present invention provide a method for optimizing a neighboring cell, a base station, and a system. The method includes: detecting, by the base station corresponding to the second cell, that a terminal in the second cell reports an unidentified physical identifier PCI; and obtaining a global cell identity GCI corresponding to the unidentified PCI, and determining that a cell corresponding to the GCI is an un-configured neighboring cell of the first cell; and sending, by the base station corresponding to the second cell, information about the un-configured neighboring cell to a base station BSS or an operations support system OSS, which is corresponding to the first cell, so that the BSS or OSS obtains the un-configured neighboring cell of the first cell according to the information of the un-configured neighboring cell, and adds the un-configured neighboring cell to a neighboring cell list of the first cell.

Abstract: The present solution relates to a method in a first network node (301) for handling handover of a user equipment (105) from a source cell (303) to a target cell (309) in a communication network (300). The first network node (301) selects (504) the target cell (309) from neighbor cells (309) based on information of cell size, which target cell (309) will be used for handover the user equipment (105) to.

Abstract: When setting up communication from a user equipment UE (1), such as for providing IP access for the UE in order to allow it to use some service, information or an indication of at least one network property relating to a first network, e.g. the current access network (3, 3?), is sent to the UE from a node (13) in a second network such as the home network (5) of the subscriber of the UE. The information or indication can be sent in a first stage of an authentication procedure being part of the setting up of a connection from the UE. In particular, the network property can indicate whether the access network (3, 3?) is trusted or not.

Abstract: A wireless communication device receives a first user input indicating a function to lock. The wireless communication device receives a second user input indicating a geometric pattern. The wireless communication device receives a third user input indicating a plurality of graphical images. The wireless communication device receives a fourth user input indicating individual positions of the graphical images on the geometric pattern. The wireless communication device processes these user inputs to lock the function. The wireless communication device receives a fifth user input indicating the individual positions of the graphical images on the geometric pattern. The wireless communication device processes the fifth user input to unlock the function.

Abstract: A first server may: receive information regarding a user device from a second server; store the information regarding the user device to form device data; determine one or more connection durations based on the device data, each one of the one or more connection durations relating to a time duration in which the user device connects to one of the one or more network devices; receive, from the second server, performance data associated with each one of the one or more network devices; receive, from a client device, a query including a request for a performance indicator of the user device; generate the performance indicator based on the performance data and based on the one or more connection durations corresponding to the each one of the one or more network devices; and provide the performance indicator to the client device based on receiving the query.

Abstract: Handover parameter settings are automatically adapted in access points in a system to improve handover performance. Reactive detection techniques are employed for identifying different types of handover-related failures and adapting handover parameters based on this detection. Messaging schemes are also employed for providing handover-related information to access points. Proactive detection techniques also may be used for identifying conditions that may lead to handover-related failures and then adapting handover parameters in an attempt to prevent such handover-related failures. Ping-ponging may be mitigated by adapting handover parameters based on analysis of access terminal visited cell history acquired by access points in the system. In addition, configurable parameters (e.g., timer values) may be used to detect handover-related failures.

Abstract: A method for providing IP services to a user of a public network is disclosed. The user accesses the public network using a user equipment which supports a first set of IP services. The network provides a second set of IP services. A third set of IP services, included in a first set and second set of IP services, is identified and the user is allowed to access a plurality of IP services of a third set. A public network suitable to implement the method is also disclosed.

Abstract: A method is provided for performing handover of at least a first User Equipment from a first cell to a second cell in case of failure of the first cell. The first cell is controlled by a first Remote Radio Unit connected to a Main unit, and the second cell is controlled by a second Remote Radio Unit connected to the Main Unit, and the second cell has the same or a larger coverage area as the first cell.

Abstract: Systems and methodologies are described that facilitate recovering from error due to false detection of completion signals at an access terminal. An access terminal specific request signal can be sent to a target base station to initiate handoff or semi-connected state exit. A completion signal can be transferred in response to the access terminal specific request signal. To mitigate errors stemming from false detection of the completion signal at the access terminal, forward link and reverse link confirmation signals can be transferred to confirm successful handoff or connected state re-entry completion. For example, the access terminal can determine handoff or re-entry to be successful when a forward link confirmation signal is detected prior to expiration of a timer. Moreover, the forward link and reverse link confirmation signals can each include more CRC bits as compared to a number of CRC bits included in the completion signal.

Abstract: A multi-modal multi-modulation base station such as a small cell eNB is disclosed. The small cell eNB includes multiple radio devices that can be configured to communicate with user devices using different protocols and different frequencies. The small cell eNB also includes a sniffer module to detecting signal from other base stations. The small cell eNB include functions to automate deployment in a self-organizing network, such as network monitoring, neighbor peer discovery, processing of neighbor peer reports, automated transmit-power adaptation, processing of user equipment reports, physical cell identity selection, automatic neighbor relation, handover configuration, private access connections, load balancing, RACH preamble power control, RACH preamble set selection, RACH preamble splitting, PRACH configuration, and mobility robustness.

Abstract: Provided is a bidirectional service flow management method in a wideband wireless connection communication system, and more particularly, a method of performing a bidirectional flow establishment. The method of providing a flow service in an IEEE 802.16/WiBro includes: generating a revised dynamic service addition (DSA) related message in which an area for designating bidirectional flow management information is allocated from a standard DSA related message; and performing a bidirectional flow initialization process between a subscriber station (SS) and a base station (BS) via single control message negotiation based on the revised DSA related message.

Abstract: An enhanced connection recovery upon lost RRC connection due to radio link failure (RLF) or handover failure (HOF) is proposed. A UE first establishes an RRC connection in a source cell in a mobile communication network. Later on, the UE detects a failure event and starts an RRC reestablishment procedure in a target cell to restore the RRC connection. In a first novel aspect, a fast NAS recovery process is applied to reduce the outage time in the target cell. In a second novel aspect, context fetching is used to reduce the outage time in the target cell. In a third novel aspect, a loss-less reestablishment procedure is proposed to reduce data loss during the connection recovery.

Abstract: An enhanced connection recovery upon lost RRC connection due to radio link failure (RLF) or handover failure (HOF) is proposed. A UE first establishes an RRC connection in a source cell in a mobile communication network. Later on, the UE detects a failure event and starts an RRC reestablishment procedure in a target cell to restore the RRC connection. In a first novel aspect, a fast RLF process is applied to reduce the outage time in the serving cell. In a second novel aspect, an enhanced cell selection mechanism based on cell prioritization information is applied to reduce the outage time in the target cell. In one embodiment, multi-RAT registration is used to steer cell selection.

Abstract: [Problem] To provide a wireless station, a determination apparatus, a wireless communication system, a determination method, and a storage medium which can carry out appropriate interference causing control in a secondary system adaptively to an actual environment with no change in a configuration of a primary system. [Means to solve the problem] A wireless station includes a determination means to determine at least one monitoring station measuring a wireless signal, which is transmitted by the wireless station and which causes interference to another system, out of plural wireless stations of a wireless communication system to which the wireless station belongs.