Abstract: A full-duplex autonomous cooperative routing in an ad hoc network is described. A central station transmits a broadcast packet to a plurality of additional communication nodes in the ad hoc network over a half-duplex frequency channel. The broadcast packet allows other communication nodes to autonomously compute frequency channel assignments for forwarding a packet during a full-duplex data transmission. A source communication node transmits the packet on a full-duplex frequency channel over the ad hoc network towards a sink communication node during the full-duplex data transmission after a frequency channel has been assigned for the full-duplex data transmission.

Abstract: A connection control method is implemented by a communication system including a UE, two or more SGWs, and an MME for performing processing related to establishment and release of communication paths between the two or more SGWs and the UE. The connection control method includes a request reception in which the MME receives an establishment request of a communication path associated with the UE from one SGW, a path establishment starting processing related to establishment of communication paths between the UE and all SGWs, and an information updating in which the MME updates information related to an establishment status of the communication path stored in a storage unit on the basis of a result of establishing the communication path.

Abstract: In some embodiments, a connection of a second device to a first device comprises a wireless connection that is used to relay information to and from the first and second devices. In further embodiments, at least one of said first and second devices comprises a smartphone and a destination device to which the first and second devices transmit information comprises a base station. In yet further embodiments, the first device solicits from the second device a processing capability; receives an acknowledgement from the second device that the second device can provide the processing capability; receives the processing capability from the second device; and uses the processing capability of the second device to increase an amount of information that is conveyed to the destination device.

Abstract: There is provided a method, comprising: configuring, by a network node controlling a macro cell of a cellular communication system, at least one handover trigger related signalling configuration for at least one terminal device of the cellular communication system; receiving, by the network node controlling the macro cell, as a result of said signalling configuration, an uplink message broadcasted by the at least one terminal device via a local area access node; recognizing the local area access node as an edge node located at an edge of a coverage area of the macro cell; and initiating a handover of the terminal device between the macro cell and a neighbouring macro cell.

Abstract: This invention provides a communication processing system that appropriately manages total power consumption in a cell managed by a base station. The communication processing system includes a communication terminal, a base station, a plurality of relay stations that relay communication between the communication terminal and the base station, first measurers in the plurality of relay stations that measure strengths of first signals received from the base station, a second measurer in the communication terminal that measures strengths of second signals received from the plurality of relay stations, and selects a communication path with a smallest difference between strengths of a first signal a second signal in a plurality of communication paths on which the base station, the plurality of relay stations and the communication terminal are connected.

Abstract: A relay device is provided with a detection unit, a reply unit, and a transmission unit. The detection unit detects an inability to connect to a wide-area information communication network in a case in which the relay device is multiplexed with another relay device. In a case in which the detection unit detects the inability to connect to the wide-area information communication network, when a request searching for a replacement partner is received from another relay device, the reply unit replies to the other relay device with information indicating that the relay device itself is a replacement candidate. The transmission unit transmits information set in the relay device itself to the other relay device.

Abstract: Systems and methods relating to transmission and use of Discovery Reference Signal (DRS) signals are disclosed in herein. In some embodiments, a method of operation of a Transmission Point (TP) in a cellular communications network comprises transmitting, from the TP, a same one or more DRS signals using at least two different transmit beams in at least two different time resources. Each transmit beam is characterized by a direction in which it is transmitted. In this manner, the TP is enabled to reuse DRS resources, which in turn enables transmission of DRS signals on a larger number of transmit beams and, correspondingly, adaptation of measurement procedures at wireless devices to obtain measurements on those transmit beams.

Abstract: Various embodiments disclosed herein provide for a tower outage impact predictor that can determine the service impact on an end user during a cellular tower outage. Radio signal profiling divides an area into grids, and then constructs a radio signal profile for each grid based on user equipment (UE) measurement data for each grid. The number of UEs in each grid is then determined, and then the number of UEs that lose service for a simulated cellular tower outage is determined. Based on the impact analysis, a more resilient backhaul network can be implemented by determining backhaul rehoming changes that optimally home cellular towers to various backhaul network devices.

Abstract: The present disclosure teaches a method and a system (10; 510; 710) for relaying telecommunication signals (S1, S2), wherein the telecommunication signals (S1, S2) have a plurality of carriers (401, 402). The system (10; 510; 710) comprises a central hub (20; 520; 720) connectable to one or more base stations (5, 6; 505, 506); a plurality of remote units (80-1, . . . , 80-N; 580-1, . . . , 580-7; 780-1, . . . , 780-9) for relaying at least one of the plurality of carriers (401, 402) in the telecommunication signals (S1 S2) supplied by the central hub (20; 520; 720). Power of the plurality of remote units (80-1, . . . , 80-N; 580-1, . . . , 580-7; 780-1, . . . , 780-9) is adjustable such that first ones of the plurality of remote units (80-1, . . . , 80-N; 580-1, . . . , 580-7; 780-1, . . . , 780-9) can be switched off and second ones of the plurality remote units (80-1, . . . , 80-N; 580-1, . . . , 580-7; 780-1, . . .

Abstract: A transceiver dongle enables signal penetration into a building. The transceiver dongle includes an interface for connecting the transceiver dongle with a processing circuit that provides a received RF signal. A signal processing chipset converts the received RF signals to a format that overcomes losses occurring when the RF signals penetrate a structure of the building over a wireless communications link. Transceiver circuitry converts between the RF signals and signals in the format that overcomes losses occurring when the RF signals penetrate the structure of the building as controlled by the signal processing chipset. An antenna transmits and receives the signals in the format that overcomes losses from the transceiver circuitry between the transceiver dongle and a second transceiver dongle.

Abstract: Embodiments of this application disclose a retransmission processing method and apparatus. The method includes: sending, by a master base station, instruction information to a first secondary base station, where the instruction information is used to instruct the first secondary base station to send feedback information to the master base station after the first secondary base station sends data to user equipment; receiving, by the master base station, the feedback information sent by the first secondary base station according to the instruction information; and performing, by the master base station, retransmission processing on the data according to the feedback information.

Abstract: A network repository function (NRF) device may receive first locality and priority information concerning a first network function device from the first network function device and may receive second locality and priority information concerning a second network function device from the second network function device. The NRF device may update a data structure based on the first locality and priority information and the second locality and priority information. The NRF device may receive a query concerning a locality from a third network function device and may search the data structure based on the query to identify network function device information associated with the locality. The NRF device may send the network function device information to the third network function device.

Abstract: A multi-range communication system is provided that can be expanded to support communications using both RF signals and millimeter wave signals without having to install entirely new systems to support communication of the signals. The communication system can use one or more shared optical fibers to simultaneously communicate both RF signals and millimeter wave signals in different ranges between network devices and mobile devices. The communication system permits the co-location of components for the communication system for the different ranges, which can result in substantially similar coverage areas for each of the ranges supported by the communication system. In addition, the corresponding equipment used for communicating signals in each of the ranges can be powered from a common DC power source. The supplied power can be configured for each piece of equipment, and corresponding range, such that the substantially similar coverage areas are obtained.

Abstract: A method for transmitting and receiving a signal by a relay node in a wireless communication system is disclosed. More particularly, the method comprises the steps of: during communication on the basis of a first backhaul link synchronization and a first access link synchronization, transmitting, to a terminal, information about change initiation to a second backhaul link synchronization; configuring a frame synchronization from the first backhaul link synchronization; and in order to configure to the terminal a second access link synchronization determined on the basis of the second backhaul link synchronization, transmitting a synchronization signal to the terminal.

Abstract: Provided are a method and an apparatus for performing a mobility control procedure of a terminal, by a master base station. The method includes: determining starting of a secondary node addition procedure for setting a terminal context for a secondary node in order to provide the terminal with a radio resource of the secondary node; transmitting, to the secondary node, a secondary base station addition request message for requesting radio resource allocation for a specific E-UTRAN radio access bearer (E-RAB); and receiving, from the secondary node, secondary cell group radio resource configuration information to be additionally configured in the terminal.

Abstract: A system for self-interference cancellation includes a frequency downconverter that decomposes a sampled RF transmit signal into an in-phase transmit signal and a quadrature transmit signal; a first analog vector modulator that scales the transmit signals to generate first scaled transmit signals; a second analog vector modulator that scales delayed transmit signals to generate second scaled transmit signals; a frequency upconverter that recomposes the scaled transmit signals into an RF self-interference cancellation signal; and a receive coupler that that combines the RF self-interference cancellation signal with a RF receive signal to reduce self-interference.

Abstract: A system for enabling signal penetration into a building includes first circuitry, located on an exterior of the building, for transmitting and receiving signals at a first frequency that experience losses when penetrating into an interior of the building, converting the received signals at the first frequency into a first format that overcome losses caused by penetrating into the interior of the building over a wireless communications link and converting received signals in the first format into the signals in the first frequency. The first circuitry receives the signals at the first frequency that are transmitted to the first circuitry using beam forming and beam steering. A first antenna associated with the first circuitry transmits the signals in the first format into the interior of the building via a wireless communications link and receives signals from the interior of the building in the first format via the wireless communications link.

Abstract: A multi-processor system with processing elements, interspersed memory, and primary and secondary interconnection networks optimized for high performance and low power dissipation is disclosed. In the secondary network multiple message routing nodes are arranged in an interspersed fashion with multiple processors. A given message routing node may receive messages from other message nodes, and relay the received messages to destination message routing nodes using relative offsets included in the messages. The relative offset may specify a number of message nodes from the message node that originated a message to a destination message node.

Abstract: In one embodiment, a supervisory device in a network assigns different access points in the network to different access point groupings. Each of the different access point groupings uses a different network path to communicate with a given endpoint in the network. The supervisory device selects at least one of the access points in each of the different access point groupings for mapping to a virtual access point (VAP) for a node in the network as part of a VAP mapping. The supervisory device instructs the selected access points to form a VAP for the node. The node treats the access points in the VAP mapping as a single access point for purposes of communicating with the network.

Abstract: Aspects of the subject disclosure may include, for example, receiving, by a feed point of a dielectric antenna, electromagnetic waves from a dielectric core coupled to the feed point without an electrical return path, where at least a portion of the dielectric antenna comprises a conductive surface, directing, by the feed point, the electromagnetic waves to a proximal portion of the dielectric antenna, and radiating, via an aperture of the dielectric antenna, a wireless signal responsive to the electromagnetic waves being received at the aperture. Other embodiments are disclosed.

Abstract: A wireless telecommunications system including: a controller; a first base station and a second base station; and a terminal device operable to communicate with the first base station over a first radio path and to communicate with the second base station over a second radio path. The controller is configured to select one of the first base station and the second base station to act as a serving base station for the terminal device based on measurements of beacon signalling transmitted by the terminal device, wherein the measurements provide an indication of radio channel conditions associated with the first radio path and the second radio path.

Abstract: A repeater with redundancy functions for a wireless communication system is provided. The repeater includes downlink repeater circuitry, uplink repeater circuitry, a detection function, at least one memory and a controller. The detection function is configured to detect conditions of communications between the base stations and the repeater. The at least one memory is used to store a primary configuration that sets out parameters for interfacing communications between the repeater and a primary base station of the base stations and at least one secondary configuration that sets out parameters for interfacing communications between the repeater and at least one secondary base station of the base stations and/or a secondary signal line of signal lines between the repeater and the primary base station.

Abstract: A communication system that includes a terminal apparatus and a base station apparatus. The terminal apparatus obtains, from the base station apparatus, information regarding addition of a component carrier, whereby the information regarding addition of the component carrier comprises information related to carrier frequency of the component carrier and information related to system bandwidth of the component carrier. The base station apparatus provides, to the terminal apparatus, information regarding addition of a component carrier, whereby the information regarding addition of the component carrier comprises information related to carrier frequency of the component carrier and information related to system bandwidth of the component carrier.

Abstract: A lighting system (100) for controlling an LED array (102) is disclosed.

Abstract: A mobile communications device may determine whether to report information regarding operation of the mobile device on a mobile network. The determination may be based on a reporting parameter set by a network control device and received via a broadcast message from a radio access node. The mobile device may compare the value of the reporting parameter to a randomly generated number. Based on the comparison, the mobile device may determine whether or not to provide information regarding operation of the mobile device or the radio access node to the network control device. The network control device may adjust the value of the reporting parameter to control the likelihood that a mobile device will report.

Abstract: Aspects of the subject disclosure may include, for example, an antenna structure that includes a dielectric antenna comprising a dielectric feedline having a feed point, and a collar that facilitates aligning a port of a waveguide system to the feed point of the dielectric feedline for facilitating transmission or reception of electromagnetic waves exchanged between the port and the feed point of the dielectric feedline, the electromagnetic waves guided by the dielectric feedline without an electrical return path. Other embodiments are disclosed.

Abstract: Establishment of integrated links comprising integrated wireless backhaul communications links and access communications links is facilitated by transmitting multiplexed sync signals to enable synchronization between the relay transmission point devices, and using a random access channel procedure to complete the establishment. The integrated wireless backhaul communications links and access communications links can be maintained by measuring channel characteristics of the backhaul communications links using a measurement reference signal.

Abstract: A method for transmitting a message in a vehicle, in which the message is received according to a source protocol, a communication mechanism which is used by the message and corresponds to the source protocol is converted in such a way that the communication mechanism corresponds to a canonical protocol, the communication mechanism corresponding to the canonical protocol is converted in such a way that the communication mechanism corresponds to a predefined target protocol, and the message is transmitted according to the target protocol.

Abstract: The present invention relates to a method and an apparatus for establishing a Wi-Fi Direct connection through Bluetooth low energy (LE) technology. According to the present invention, provided are a method including: receiving an advertising message including information associated with Wi-Fi Direct from a second device; transmitting a request message for requesting detailed information of the Wi-Fi Direct to the second device based on the advertising message; receiving a response message including the detailed information in response to the request message; and establishing the Wi-Fi Direct connection with the second device, wherein the advertising message is transmitted through a specific channel for a Bluetooth low energy (LE) connection and the information includes at least one of ID information indicating the Wi-Fi Direct, location information of the detailed information, or available information of an alternative communication means, and an apparatus thereof.

Abstract: Technology for a multi-repeater system including wireless transmission of power from a first repeater to a second repeater is disclosed. A first and second repeater can be disposed opposite each other about a structural element. Wireless power can be transmitted from the first repeater through the structural element to the second repeater for use by the second repeater.

Abstract: Disclosed is a system for tracking and dynamically allocating wireless capacity within a wireless telecommunications network. The system has a plurality of processor levels: a layer of baseband-level capacity processors that are deployed within each baseband processor; a layer of client-level capacity processors that are deployed within each wireless base station; a layer of server-level capacity processors, each of which orchestrate allocation of wireless capacity over a unique domain of wireless base stations; and a master level capacity processor. Wireless capacity is allocated in terms of active connections to wireless devices, and the active connections are quantized and allocated as logical connections, or connection tokens. The system dynamically allocates wireless capacity so that resources are devoted to venues and environments where demand is greatest at any given time.

Abstract: The present teachings disclose implementations of a UE and a method for providing a Narrowband Internet of Things (NB-IoT) network, the method including: receiving an NB-IoT downlink over a forward link; obtaining MAC configuration parameters, a transmit-timing offset and a transmit-frequency offset; pre-adjusting, to align with a return link timing and a return link frequency, a transmit-timing with the transmit-timing offset and a transmit-frequency with the transmit-frequency offset; requesting, based on the MAC configuration parameters and after the pre-adjusting, a connection with a Random-Access Preamble (RAR) over an NB-IoT uplink via the return link; and establishing the connection upon receiving a Random-Access Response (RAR), where a Round Trip-Time (RTT) from a transmitting antenna to a receiving antenna is greater than 67 microseconds (us), and both the NB-IoT downlink and the NB-IoT uplink use a mostly unchanged NB-IoT standard waveform.

Abstract: Embodiments contemplate methods, systems, and apparatuses for interference measurement in a wireless communication network, including wireless communication networks the employ MIMO in uplink and/or downlink communication. Embodiments contemplate identifying one or more interference measurement resource elements that may be received from one or more transmission points. Embodiments also contemplate performing interference measurement estimation based at least in part on the identified one or more interference measurement resource elements. Channel state information (CSI) perhaps in the form of reports may be generated based at least in part on the one or more interference measurement estimation. Embodiments also contemplate that the CSI report may be transmitted to one or more nodes. In some embodiments, the one or more interference measurement resource elements may be received as part of a set of resource elements.

Abstract: A terminal station device is a terminal station device of a communication system in which a high-order device, the terminal station device, an end-terminal device, and a low-order device are communicably connected in this order, the high-order device notifies the low-order device of resource information indicating a resource that is usable in communication, and thereby the resource is allocated to the low-order device. The terminal station device includes: a band allocation unit that allocates a band that is permitted to be used by the end-terminal device for transmission processing to the terminal station device, based on an interval at which the terminal station device has received the resource information.

Abstract: A system for enabling signal penetration into a building includes a first transceiver, located on an outside of the building, for transmitting and receiving signals at a first frequency outside of the building, wherein the signals at the first frequency do not easily penetrate into an interior of the building. A first up/down converter converts between a first version of the signals at the first frequency and a second version of the signals at a second frequency. The first frequency is higher than the second frequency and the signals at the second frequency better penetrate to the interior of the building and overcome losses caused by penetrating into an interior of the building. A second up/down converter converts between the second version of the signals at the second frequency that overcomes the losses caused by penetrating into the interior of the building and a third version of the signals after transmission from the building exterior to the building interior.

Abstract: Methods and systems are provided for managing an Internet of Things object having a single active Radio Access Technology for communication with a data network via a hub of a local network. The method comprises: receiving, by a service provider server connected to the data network, information indicating a loss of connectivity between the Internet of Things object and the data network via the hub; and establishing, by the service provider server, a relay connection between the Internet of Things object and the data network, connectivity between the Internet of Things object and the data network being restored via the relay connection.

Abstract: According to one embodiment of the present invention, a method by which a wireless communication device including a plurality of antennas transmits and receives a wireless signal in an unlicensed band in a wireless communication system comprises the steps of: performing a clear channel assessment (CCA) by using the plurality of antennas for a predetermined time interval in the unlicensed band; and transmitting the wireless signal through the unlicensed band when it is determined that the unlicensed band is in an idle state in which the unlicensed band is not occupied by other wireless communication devices, wherein the step of performing the CCA can comprise the steps of: acquiring one reference value by using energy sensing indicators (ESIs) measured through the plurality of antennas; and comparing the reference value with a CCA threshold value so as to determine whether the unlicensed band is in an idle state.

Abstract: This invention presents methods for wireless communication systems implementing SCFD operation comprising adaptively configuring FDPs based on the directional antennas at each BS; measuring the interference levels among UEs located in areas covered by an FDP and determining the UE group that transmits and receives data on the same time-frequency resource(s) under the same FDP; and measuring the channels among neighboring BSs to cancel the interferences between two BSs with SCFD operations.

Abstract: A system for enabling signal penetration into a building comprises first circuitry, located on an outside of the building, for receiving RF signals and converting the RF signals into a format that overcomes losses caused by penetrating a structure of the building over a wireless communications link. The first circuitry further comprises a first transceiver dongle including a signal processing chipset for converting the received RF signals to the format that overcomes the losses occurring when the signals penetrate the structure of the building. Second circuitry, located on the interior of the building, receives the signals in the format that overcomes the losses caused by penetrating the structure of the building over the wireless communications link and converts the signals to a second format for transmission to the wireless devices within the building.

Abstract: Provided is a communication method and apparatus using a multi-radio. The communication method includes establishing a link via at least one node included in a group that uses a low data-rate radio (LDR); transmitting a data frame to the at least one node included in the group; and receiving, using a multi-radio based on an availability of the LDR, an acknowledgement (ACK) with respect to the transmitted data frame.

Abstract: Network hardware devices are organized in a wireless mesh network (WMN) including a base station node (BSN) device connected to a tower in a geographic area and multiple home access node (HAN) relay devices located in a geographic area and separated from one another by a distance. First set, second set, and third set of HAN relay devices are organized in a first hexagon pattern, a second hexagon pattern, and a third hexagon pattern, respectively, forming a base unit of the WMN. The BSN device is communicatively coupled to a first HAN relay device of the first set, a first HAN relay device of the second set, and a first HAN relay device of the third set and the BSN device is positioned within a geographic region defined by an outer perimeter of the base unit.

Abstract: Systems and methods relating to transmission and use of Discovery Reference Signal (DRS) signals are disclosed in herein. In some embodiments, a method of operation of a Transmission Point (TP) in a cellular communications network comprises transmitting, from the TP, a same one or more DRS signals using at least two different transmit beams in at least two different time resources. Each transmit beam is characterized by a direction in which it is transmitted. In this manner, the TP is enabled to reuse DRS resources, which in turn enables transmission of DRS signals on a larger number of transmit beams and, correspondingly, adaptation of measurement procedures at wireless devices to obtain measurements on those transmit beams.

Abstract: A method for positioning network devices includes receiving network parameters for a network and determining corresponding installation locations for the end devices based on the network parameters. The network includes at least one network backhaul, relay devices in communication with the network backhaul, and end devices in communication with the relay devices or the network backhaul. The end devices are configured to wirelessly communicate with user devices at the corresponding user locations. The method also includes determining communication connections between at least one of: the end devices and user devices; the relay devices and the at least one network backhaul; the relay devices and the end devices; or the end devices and the at least one network backhaul. The method further includes generating a network topology indicating the determined corresponding locations for the end devices and the determined communication connections.

Abstract: Embodiments of the present invention provide a data forwarding method, device, and communications system, which relate to the field of communications and can achieve accuracy and continuity of data transmission during carrier aggregation for cells between base stations. The method includes: sending, by a primary base station, a first message to a secondary base station, where the first message is used to instruct the secondary base station to perform handover, and the first message includes an identifier of a target base station; confirming, by the primary base station, that the secondary base station forwards data to the target base station; and sending, by the primary base station, a second message to a user equipment, where the second message is used to instruct the user equipment to acquire the data from the target base station. The embodiments of the present invention are used for data forwarding.

Abstract: End marker functionality may be provided in mobile networks having mobile user planes configured with segment routing for IPv6 (SRv6), especially suitable for 5G network migration. For example, a base station may receive an SRv6 control message from a user plane function (UPF) which carries data traffic of a data session for the UE. The base station may perform a function associated with a segment identifier (SID) identified in a segment routing header (SRH) of the SRv6 control message. The function may be an end marker handling function associated with an end marker SID. Performing the end marker handling function may cause the base station to generate a tunneling protocol message (e.g. according to GPRS tunneling protocol or GTP) comprising an end marker message and send the tunneling protocol message comprising the end marker message for receipt by the target base station.

Abstract: Methods and devices are provided to enable a cooperating group of user equipments (UEs) to receive a group-specific common-parameters configuration (CPC) message over a first spectrum band and access a second spectrum band synchronously for device-to-device (D2D) sidelink transmission within the group. In an embodiment, a UE operating in a cooperation mode in a cooperating group of UEs receives a group-specific common-parameters configuration (CPC) message from a transmit point (TP) over a first spectrum band, the group-specific CPC message comprising information to configure cooperating UEs in the group for synchronous clear channel assessment (CCA) and aligned sidelink transmission starting times in a second spectrum band. The UE performs a synchronous CCA in the second spectrum band in accordance with a common contention window generated based on the information in the group-specific CPC message.

Abstract: The present invention relates to a method (300) for operating a user equipment (106) in a wireless radio network (100). The wireless radio network (100) comprises a base station (101) and at least one node (105) configured to relay communication data between the user equipment (106) and the base station (101). According to the method, a relayed communication state is determined (301) and a measurement of characteristics of further direct radio transmission links between the user equipment (106) and the wireless radio network (100) is initiated (302) depending on the relayed communication state.

Abstract: Systems and methods for effectuating communication in a low power wide area network using a mobile data-handling device are disclosed. A method may comprise moving a mobile data-handling device to a first position that is within communication range of an end node of a low power wide area network. The mobile data-handling device may receive a data packet from the end node and may move to a second position at which the mobile data-handling device connects to a data-receiving device. The mobile data-handling device may transmit, via the data-receiving device, the data packet to a computing system for further processing.

Abstract: A system for enabling signal penetration into a building includes first circuitry, located on an outside of the building, for receiving signals at a first frequency that experiences losses when penetrating into an interior of the building and converting the received signals at the first frequency into a first format that overcome the losses caused by penetrating into the interior of the building over a wireless communications link. The first circuitry further includes a first transceiver, implementing a first transmission chipset for RF transmissions in the first format that counteracts losses occurring when penetrating into the interior of the building, for receiving the signals at the first frequency and converting the received signals at the first frequency into the first format that overcomes the losses caused by penetrating into the interior of the building.

Abstract: A communication system includes a plurality of communication stations arranged to respectively transmit a beacon on which beacon time information related to a beacon received from a peripheral communication station is placed at a predetermined transmission interval and control a beacon transmission timing of its own station while a collision with the beacon transmitted from the peripheral communication station is avoided on the basis of beacon information placed on the received beacon, in which at least a part of the communication stations includes means configured to decide a priority with respect to beacons received from at least one peripheral communication station and means configured to place beacon time information of a beacon having a high priority among the received beacons on a beacon of its own station, and transmits the beacon at a predetermined transmission interval.