Abstract:
무선통신시스템에서지연을고려한다중노드협력방법을제안한다. 지연속성이유사한상향링크협력단말기들을상향링크협력영역으로구분하도록스케줄링하고상향링크협력영역과비협력영역간간섭을제거하는프레임구조를제안한다. 또한, 다중노드협력적용시발생하는지연속성에따라확장된주기적전치부호를적용하고확장된주기적전치부호를고려한상향링크와하향링크의협력기지국을결정하는방법을제안한다.
Abstract:
Disclosed are a method and an apparatus for distributing a cellular load using a Wi-Fi network and a terminal using the same. The method for distributing the cellular load using the Wi-Fi network includes the steps of: collecting network information of a coexistence network including the Wi-Fi network and a cellular network; calculating a load variance rate to the Wi-Fi network corresponding to at least one terminal which belongs to a user group which is accessible to the Wi-Fi network based on the network information, wherein the load variance rate represents the transmission probability of one traffic to the Wi-Fi network in a coexistence network environment with the Wi-Fi network and the cellular network; and supplying the load variance rate to the Wi-Fi network to at least one terminal which belongs to the user group which is accessible to the Wi-Fi network.
Abstract:
Disclosed are a method and a system for selecting an access network in a terminal through cooperation between the terminal and a heterogeneous network. The access network selection method of the terminal and the system thereof in a heterogeneous network environment where a first network and at least one second network coexist while overlaying on each other can select an access network for the terminal by considering the status information of a large base station which is a base station for the terminal or the first network and the status information of a small base station which is the base station of the second network.
Abstract:
PURPOSE: A smart rental system, a method thereof, and a recording medium for the same are provided to rent and return a desired article anytime and anywhere by performing rental, return, and reservation through a smart phone. CONSTITUTION: A QR(Quick Response) code is scanned with a smart phone(S111). The smart phone is connected to a rental managing server by recognizing the QR code. The smart phone transmits user information, rental article information included in the QR code, and a rental request to the rental managing server(S112). The rental managing server approves a user by using location information of the smart phone and the user information(S116). An OTP(one-time password) issued by the rental managing server is used to remove a locking system, and a rental is started(S117-S120). [Reference numerals] (AA) Start; (BB) End; (CC,EE) Yes; (DD,FF) No; (S111) Recognizing a QR code; (S112) Transmitting an ID and a rental request; (S113) Are location information and user information effective?; (S114) Transmitting a rental refusal message; (S115) Reservation or waiting state?; (S116) User approval; (S117) Transmitting a lock release OTP; (S118) Locking device release; (S119) Transmitting a locking release message; (S120) Rental start
Abstract:
지그비 통신에서 통신 시스템간 충돌 회피 장치 및 방법이 개시된다. 본 발명은 지그비 노드들의 프레임 에러율(Frame Error Rate)을 측정하여 상기 지그비 노드와 다른 통신 시스템 간의 간섭이 존재하는지 여부를 판단하는 채널 상태 관측부 및 판단 결과 상기 간섭이 존재하는 경우, 상기 다른 통신 시스템 들이 사용하지 않는 채널을 검색하여 상기 간섭을 중재하는 간섭 중재부를 포함하고, 간섭 중재부는 검색 결과 상기 채널을 찾은 경우, 상기 지그비 노드의 채널을 상기 채널로 변경하고, 검색 결과 상기 채널을 찾을 수 없는 경우, 시분할 다중접속방식(TDMA)을 이용하여 상기 간섭을 중재하는 것을 특징으로 한다. 본 발명에 따르면, 지그비 통신에서 지그비 통신 장치와 다른 무선 통신 시스템 간의 주파수 충돌을 방지함으로써, 통신 실패율 및 통신 시스템의 오작동을 줄일 수 있는 효과가 있다. 지그비, 간섭, 중재
Abstract:
PURPOSE: An integrated base station managing a plurality of simplicity radio access points is provided to optimally manage sources in coexistence environment for various networks, thereby minimizing wasted energy. CONSTITUTION: An integrated base station(30) receives a signal from a backbone/backhaul network. The integrated base station transmits the received signal to a simplicity radio access point. The integrated base station routes at least one signal among two or more simplicity radio access points. The integrated base station communicates with two or more simplicity radio access points by wire communication. [Reference numerals] (30) Integrated base station
Abstract:
PURPOSE: A handover support method between a macro base station and a vehicle base station in a wireless communication system and system thereof are provided to execute handover for a vehicle base station by estimating the movement of portable terminals. CONSTITUTION: A macro base station receives information which displays the movement state of a vehicle from a vehicle base station(301). The macro base station receives information which displays the boarding state of the portable terminal from the portable terminal(305). The macro base station determines handover between the macro base station and the vehicle base station based on the boarding information for the vehicle and the vehicle movement state information(306).
Abstract:
A method for avoiding the collision between communication systems in the Zigbee communication and an apparatus thereof are provided to reduce a communication failure rate and the wrong operation of a communication system. A channel state observing unit(400) measures frame error rates of Zigbee nodes, and then determines whether the interference between the Zigbee nodes and other communication systems exists. If the interference exists, an interference mediation unit(410) searches a channel which the other communication systems do not use and mediates the interference.
Abstract:
이종망 환경에서의 페이징 방법 및 이동통신 시스템이 개시된다. 이동통신 시스템은, 단말의 위치 정보와 함께, 상기 단말의 셀룰러 모드(cellular mode)에 대한 전원 상태 및 상기 단말과 접속 상태에 있는 이종망 정보를 등록하는 위치 등록기(location register); 및 상기 단말에 대한 페이징(paging) 요청 시 상기 셀룰러 모드에 대한 전원 상태 및 상기 이종망 정보를 이용하여 상기 단말이 위치한 셀룰러 기지국 또는 이종망을 통해 상기 단말에 대한 페이징을 수행하는 이동교환국(mobile switching center)을 포함할 수 있다.
Abstract:
단말과 이종망과의 협력을 통한 단말의 액세스 망 선택 방법 및 시스템이 개시된다. 1차 망과 적어도 하나의 2차 망이 오버레이 되어 공존하는 이기종 네트워크 환경에서 단말의 액세스 망을 선택하는 방법 및 시스템은 단말 또는 1차 망의 기지국인 대형 기지국에서 대형 기지국의 상태 정보와 함께 2차 망의 기지국인 소형 기지국의 상태 정보를 고려하여 단말의 액세스 망을 선택할 수 있다.