Patent application number | Description | Published |
20130039315 | METHOD FOR EFFICIENT CHANNEL USE - According to one embodiment of the present invention, a method for efficient channel use is disclosed. The channel use method may comprise the steps of: selecting a specific channel from channels configured to be shared along with a homogeneous or heterogeneous communication scheme; and performing an interference avoidance procedure if the selected channel interferes with a neighboring access point. The avoidance procedure may comprise one or more of a process of making a request to switch a channel of the neighboring access point, a process of notifying to the neighboring access point, and a process of changing the selected channel into another channel. | 02-14-2013 |
20130059588 | METHOD FOR SWITCHING SERVICE OF MANAGEMENT DEVICE SERVING NETWORK OR DEVICE - Disclosed is a method for smoothly switching between services to allow networks or devices to coexist. The method of switching between services of a television band device (TVBD) network or device includes: receiving a request for switching between services of the TVBD network or device from a coexistence manager (CM); and transmitting a response with respect to the request to the CM, wherein the services include an information service obtaining, by the TVBD network or device, neighbor information of the TVBD network or device from the CM and a management service providing measurement results to the CM by the TVBD network or device, and the response includes an indicator indicating whether or not the request has been successfully processed. | 03-07-2013 |
20130090145 | METHOD FOR CONTROLLING RANDOM ACCESS FOR THE EFFICIENT SENSING OF THE COOPERATIVE SPECTRUM IN A COGNITIVE RADIO-BASED FREQUENCY RESOURCE SHARING SYSTEM - An embodiment of the present invention relates to a method for performing spectrum sensing to detect a signal for a terminal of a primary user in each sensing node. The method for performing sensing may comprise the steps of: performing, by the sensing node, spectrum sensing to detect a signal for a terminal of a primary user; computing, by the sensing node, a local test statistic on the basis of the result of the spectrum sensing; calculating, by the sensing node, the transmission probability on the basis of the computed local test statistic; and transmitting, by the sensing node, sensing information to a convergence center on the basis of the calculated transmission probability. In this case, the convergence center can determine whether the signal for a primary user exists on the basis of the transmitted sensing information. | 04-11-2013 |
20130117402 | METHOD FOR SELECTING A MASTER DEVICE IN A COEXISTENCE SYSTEM - Disclosed is a method of selecting a master device for coexistence, the method comprising: identifying devices to be used in at least one network capable of coexisting without cooperation; selecting a master device among the identified devices; and controlling, by the master device, other network and device. | 05-09-2013 |
20130155995 | METHOD OF MAKING A COEXISTENCE DECISION ON CENTRALIZED TOPOLOGY - Disclosed is a radio technology independent method for coexistence among dissimilar or independently operated TV Band Device (TVBD) networks and dissimilar TV Band Devices. A resource allocation method on centralized topology is disclosed, which comprises steps of receiving at least one available resource; performing a neighbor set calculation based on the received at least one available resource; calculating the resource according to the neighbor set calculation, where the calculated resource is allocated to at least one device. | 06-20-2013 |
20130155998 | METHOD OF CONSTRUCTING A COEXISTENCE PROTOCOL MESSAGE - Disclosed is a radio technology independent method for coexistence among dissimilar or independently operated TV Band Device (TVBD) networks and dissimilar TV Band Devices. A coexistence protocol message construction method is disclosed, which comprises steps of generating the coexistence protocol message with a format having a coexistence header field, an information type field, and a payload field, where the information type field differentiates type of the coexistence protocol message. | 06-20-2013 |
20130157681 | METHOD OF MAKING A COEXISTENCE DECISION ON DISTRIBUTED TOPOLOGY - Disclosed is a radio technology independent method for coexistence among dissimilar or independently operated TV Band Device (TVBD) networks and dissimilar TV Band Devices. A resource allocation method on distributed topology is disclosed, which comprises steps of receiving at least one available resource; performing a neighbor set calculation based on the received at least one available resource; calculating the resource according to the neighbor set calculation, where the calculated resource is negotiated among a plurality of coexistence manager (CM) entities and the resource is allocated to at least one device after the negotiation by the coexistence manager (CM) entities. | 06-20-2013 |
20130157706 | METHOD OF MAKING A COEXISTENCE DECISION ON HYBRID TOPOLOGY - Disclosed is a radio technology independent method for coexistence among dissimilar or independently operated TV Band Device (TVBD) networks and dissimilar TV Band Devices. A resource allocation method on Hybrid topology is disclosed, which comprises steps of receiving at least one available resource; performing a neighbor set calculation based on the received at least one available resource; calculating the resource according to the neighbor set calculation; receiving at least one channel list set from each of the coexistence manager (CM) entity; determining whether there is any conflict channel list set among the received channel list set, and either transmitting a confirmation message or a channel list set changing request message to CM entity based on the determination result. | 06-20-2013 |
20130295947 | METHOD FOR DETECTING A NETWORK OR DEVICE AND A NEIGHBOR THEREOF - Provided is a method for detecting a network or device and a neighbor thereof, in order to detect networks or devices which substantially interfere with each other and to manage resources in consideration of the substantial interfering relationships so that the networks or devices can efficiently coexist. To this end, according to an embodiment of the present invention, a method for detecting a neighbor of a television band device (TVBD) network or device comprises the steps of: transmitting a request to a coexistence manager which serves the TVBD network or device; and receiving neighbor information on the TVBD network or device in response to the request, wherein the neighbor information includes an identifier of a neighbor TVBD network or device which interferes with the TVBD network or device, and the neighbor information is based on operating channels of the TVBD network or device and the neighbor TVBD network or device. | 11-07-2013 |
20140018114 | METHOD FOR SWITCHING SERVICE OF MANAGEMENT DEVICE SERVING NETWORK OR DEVICE - Disclosed is a method of switching between services of a television band device (TVBD) network or device of an apparatus including a coexistence manager (CM), including: transmitting, by the CM, a request for switching between services of the TVBD network or device to the TVBD network or device; and receiving, by the CM, a response with respect to the request from the TVBD network or device. Here, the services include an information service obtaining neighbor information from the CM by the TVBD network or device and a management service providing measurement results to the CM by the TVBD network or device, and the response includes an indicator indicating whether or not the request has been successfully processed. | 01-16-2014 |
20140038657 | RESOURCE ALLOCATION IN A COEXISTENCE SYSTEM - One embodiment disclosed in the present description relates to a coexistence manager which can adaptively select channels in a coexistence environment between disparate systems with channel use constraints that inherently exist with use of TVWS. Accordingly, the embodiment disclosed in the present description provides a resource allocation method for a manager device, comprising the steps of: receiving a channel allocation request from a first network or device; determining a second network or device for switching channels based on the benefits of each channel or device, if a channel cannot be assigned to the first network or device; switching the channel used by the second network or device to another channel and raising its priority; and assigning the channel used by the second network or device to the first network or device. | 02-06-2014 |
20140066086 | FREQUENCY BAND DETERMINATION METHOD IN COEXISTENCE SCHEME - According to one embodiment of the present invention, provided is a frequency band (FB) determination method of a wireless access device which provides an access point to enable one or more terminals to wirelessly access a network. The method may comprise the steps of receiving database-related information from database servers which have database related to unused FBs of a television broadcasting band (TVBB), determining a database server to be accessed among the database servers on the basis of the database-related information, requesting the determined database server and receiving information on available FBs, and determining FBs, among the received operating FBs, for the one or more terminals. The operating FBs are determined by the database server so that the wireless access device can coexist with a neighboring homogeneous or heterogeneous wireless access device without mutual interference within the TVBB. | 03-06-2014 |
Patent application number | Description | Published |
20100080269 | METHOD OF TRANSMITTING REFERENCE SIGNALS FOR COOPERATIVE WIRELESS COMMUNICATION SYSTEM AND METHOD OF ALLOCATING RADIO RESOURCES FOR RELAY-BASED WIRELESS COMMUNICATION SYSTEM - A method of transmitting reference signals in a wireless communication system for cooperative communication is provided. The wireless communication system defines a plurality of transmission patterns of the reference signals each having a different pattern, and each of a plurality of base stations and/or each of a base station and a relay station participating in the cooperative communication transmit the reference signals based on one transmission pattern selected from the plurality of transmission patterns of the reference signals. | 04-01-2010 |
20100142417 | RELAY STATION AND WIRELESS COMMUNICATION SYSTEM USING THE SAME - A relay station, method and system operated in a frequency division duplex (FDD) are disclosed. The relay station is operated in a band switching FDD mode and/or a dual band transmit (Tx)/receive (Rx) mode. In the band switching FDD mode, Tx frequency and Rx frequency are switched. In the dual band Tx/Rx mode, concurrent transmission or concurrent reception is achieved in the Tx frequency and Rx frequency. | 06-10-2010 |
20110044240 | Method for transmitting a packet at a base station in a network using multiple communication schemes - A method of transmitting a packet, at a MS and base station operable using multiple communication schemes is disclosed. The base station of the multiple communication schemes receives a packet from the MS and then determines a transmission path based on a link status of a network, a traffic characteristic of the packet and the like. The base station transmits the packet of the first communication scheme via a network using a second communication scheme, thereby enabling traffic redirection. Such a resource as a frequency band and the like, which will be used between networks using different communication schemes, can be cooperatively set between the MS and the base station. | 02-24-2011 |
20110058504 | SCHEDULING METHOD, MS APPARATUS USING THE SCHEDULING METHOD, DATA TRANSMISSION METHOD, AND BS APPARATUS USING THE DATA TRANSMISSION METHOD IN WIRELESS COMMUNICATION SYSTEM - In the MS apparatus for performing scheduling, a reception module receives any number information through a specific downlink channel in a first time unit from each of neighbor BSs. A scheduling module determines, among the neighbor BSs, a BS which is to transmit and receive data using a downlink data transmission region and an uplink data reception region, respectively, in a second time unit according to a previously set rule based on the number information. A transmission module transmits a signal, indicating that data transmission and reception using the downlink transmission region and uplink data reception region, respectively, in the second time unit are not possible, to the other neighbor BSs excluding the determined BS among the neighbor BSs. | 03-10-2011 |
20110255462 | METHOD FOR SELECTING A RELAY STATION - A method for selecting a relay station includes enabling a cognitive radio system to receive status information regarding a plurality of candidate relay stations, licensed target stations, and non-licensed target stations, determining an available power threshold value in consideration of the amount of interference affecting the licensed target station and a maximum power value when data is transmitted to the non-licensed target station, and selecting a relay station to be used in transmitting the data in the available power threshold value, in consideration of the status information and the amount of interference. | 10-20-2011 |
20110268012 | METHOD AND APPARATUS FOR DATA COMMUNICATION IN RADIO NETWORK - Disclosed is a method for data communication in a radio network, including calculating an expected value of transmission efficiency of a Carrier Sense Multiple Access/Collision Avoidance (CSMA/CA) protocol and an expected value of transmission efficiency of a Slotted ALOHA protocol, comparing the two expected values, switching a mode into the mode of the protocol having the larger expected value from among the expected value of transmission efficiency of the CSMA/CA protocol and the expected value of transmission efficiency of Slotted ALOHA protocol, and broadcasting, to stations (STAs), a message for indicating the STAs to switch a protocol into the protocol having the larger expected value of transmission efficiency, and transmitting data by using the protocol having the larger expected value of transmission efficiency. | 11-03-2011 |
20120087246 | METHOD FOR PROCESSING TRAFFIC IN AN INTERMEDIATE ACCESS POINT - A method for processing traffic destined for a BS received from one or more terminals in an intermediate access point supporting two or more communication schemes is disclosed. The method includes receiving traffic from the one or more terminals according to a first communication scheme, measuring a congestion level of the received traffic, transmitting a first traffic being part of the received traffic to a second intermediate access point according to a second communication scheme, if the congestion level is a predetermined threshold or higher, and transmitting a second traffic being remaining traffic of the received traffic except the first traffic to the BS. | 04-12-2012 |
20120163179 | METHOD FOR PROCESSING TRAFFIC IN UNUSED BAND IN AN INTERMEDIATE ACCESS POINT - A method for efficiently processing traffic in an intermediate access point such as a relay station is disclosed. To process traffic directed from one or more terminals to a base station, an intermediate access point supporting two or more communication scheme receives traffic from the one or more terminals according to a first communication scheme, measures a congestion level of the received traffic, transmits a first traffic being part of the received traffic to a second intermediate access point according to a second communication scheme, if the congestion level is equal to or higher than a predetermined threshold, and transmits a second traffic being remaining traffic of the received traffic except the first traffic to the BS. | 06-28-2012 |
20120190374 | FEMTO BASE STATION AND METHOD FOR MANAGING RESOURCE THEREOF - A method for managing radio resource of a femto cell includes: providing, by the femto cell, a service to one or more UEs by using most of pre-set radio resource; receiving measurement results from the one or more UEs; determining whether or not one or more neighbor femto cells are closely located nearby based on the measurement results; and if it is determined that neighbor femto cells are closely located nearby, reducing the pre-set radio resource into a small radio resource and providing a service with the small radio resource. | 07-26-2012 |
20120218921 | SCHEDULING METHOD, MS APPARATUS USING THE SCHEDULING METHOD, DATA TRANSMISSION METHOD, AND BS APPARATUS USING THE DATA TRANSMISSION METHOD IN A WIRELESS COMMUNICATION SYSTEM - The method for scheduling, at an MS, data transmission and reception of neighbor BSs adjacent to the MS in a wireless communication system includes receiving number information through a specific downlink channel in a first time unit from each of the neighbor BSs, determining, among the neighbor BSs, a BS which is to transmit and receive data in a second time unit, in a predefined rule, according to the number information and fairness information based on one or more of a number of MSs within a cell served by each of the neighbor BSs and a number of time units that each of the neighbor BSs used previously for data transmission and reception, and transmitting a signal indicating that data transmission and reception in the second time unit are not possible, to the other neighbor BSs excluding the determined BS among the neighbor BSs. | 08-30-2012 |
20120238273 | METHOD AND APPARATUS FOR REASSIGNING FREQUENCY RESOURCE IN A FEMTO BASE STATION DURING HANDOVER - The present invention relates to an apparatus and method for arbitrating radio resources between femto base stations in which, when handover of a terminal takes place between femto base stations, the handover is carried out by reallocating radio resources of a serving femto base station assigned to the terminal to a target femto base station, to rearbitrate the radio resources and reduce the time required for rearbitration, thereby enhancing communication effectiveness. | 09-20-2012 |
Patent application number | Description | Published |
20130322865 | ZOOM LENS BARREL ASSEMBLY AND PHOTOGRAPHING APPARATUS INCLUDING THE SAME - A zoom lens barrel assembly includes: a first barrel including an inlet through which light is incident on the first barrel; a second barrel that surrounds at least a part of an external surface of the first barrel and supports the first barrel to be movable to protrude forward from a front portion of a main body; a plurality of blades disposed to be moved between an open position in which the plurality of blades are retreated to an outside of the inlet and a closed position in which the inlet is blocked; and an accommodation unit that extends from an end of the first barrel to an outside of the first barrel so as to accommodate the blades that have been moved to the open position. | 12-05-2013 |
20140347729 | ZOOM LENS BARREL ASSEMBLY AND ELECTRONIC APPARATUS INCLUDING THE SAME - A zoom lens barrel assembly includes a first barrel, a second barrel, a lens barrier, and a transparent member. The first barrel supports at least one lens. The second barrel surrounds at least a portion of an outer surface of the first barrel, and supports the first barrel to protrude along an optical axis direction. The lens barrier is disposed on a front side of the first barrel, and is moved in a direction that intersects an optical axis to expose the at least one lens when the first barrel is protruded. The transparent member is disposed on a front side of the lens barrier, and prevents impurities from entering the first barrel. | 11-27-2014 |
20150253534 | LENS DRIVING ASSEMBLY AND ELECTRONIC APPARATUS HAVING THE SAME - A lens driving assembly includes a cam barrel having an opening in an outer circumferential surface thereof and that rotates around an optical axis, a front barrel accommodated in the cam barrel and that moves in an optical axis direction corresponding to rotation of the cam barrel, and a first lens group assembly that pivots between a home position that is deviated from the optical axis and an alignment position that is aligned with the optical axis, in which the first lens group assembly moves through the opening between the home position and the alignment position according to the rotation of the cam barrel and an elastic force. | 09-10-2015 |