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    • 1. 发明公开
    • 호 처리 방법 및 장치
    • 用于处理呼叫的方法及其装置
    • KR1020140040485A
    • 2014-04-03
    • KR1020120107213
    • 2012-09-26
    • 한국전자통신연구원경북대학교 산학협력단
    • 나지현신연승문정모김대익박우구조호신이재원조가희
    • H04W48/18
    • H04W48/18H04W16/02
    • Disclosed are a method and apparatus for processing a call. The method for processing a call according to one embodiment of the present invention includes the steps of receiving a signal from a plurality of base stations which support different wireless access technologies; selecting a base station with the smallest signal intensity among the base stations, based on the signal; and supplying call request information to the base station with the smallest signal intensity. According to the present invention, the load of an entire network can be efficiently distributed. [Reference numerals] (AA) Start; (BB) End; (S200) Receive a signal from a plurality of base stations; (S210) Generate a spectrum map based on the signal; (S220) Select a base station with the smallest signal intensity based on the spectrum map; (S230) Supply call request information to the selected base station
    • 公开了一种处理呼叫的方法和装置。 根据本发明的一个实施例的用于处理呼叫的方法包括以下步骤:从支持不同无线接入技术的多个基站接收信号; 基于信号选择基站中信号强度最小的基站; 并向具有最小信号强度的基站提供呼叫请求信息。 根据本发明,可以有效地分配整个网络的负载。 (附图标记)(AA)开始; (BB)结束; (S200)从多个基站接收信号; (S210)根据信号产生谱图; (S220)根据频谱图选择信号强度最小的基站; (S230)向所选择的基站提供呼叫请求信息
    • 8. 发明公开
    • 도심 무선통신시스템 및 그의 무선자원 관리방법
    • 无线电通信系统及其管理无线电资源的方法
    • KR1020020051548A
    • 2002-06-29
    • KR1020000080920
    • 2000-12-22
    • 한국전자통신연구원
    • 조호신김영일
    • H04B7/00
    • H04W16/02H04B7/022H04W16/28
    • PURPOSE: A downtown radio communication system and a method for managing radio resources thereby are provided to increase the reuse efficiency of radio resources by reducing an interference to a neighbor cell using many directional antennas in one cell and making an identical channel used in the neighbor cell without any interference. CONSTITUTION: Directional antennas(A,B) are arranged at both ends of a straight line type cell, and their antenna beams are tilted. In this case, the degree of tilting is determined by the height of each antenna and the distance between the antennas. In case that a user in the zone of antenna A moves to the zone of antenna B, inter-antenna switching is required. At a zone where the coverage of two antennas are superposed, a macro diversity effect is obtained in reverse communication.
    • 目的:提供一种市中心的无线电通信系统和用于管理无线电资源的方法,以通过在一个小区中使用许多定向天线减少对相邻小区的干扰来增加无线电资源的重用效率,并使相邻小区中使用的相同信道 没有任何干扰。 方案:定向天线(A,B)布置在直线型电池的两端,它们的天线波束倾斜。 在这种情况下,倾斜度由每个天线的高度和天线之间的距离决定。 在天线A区域中的用户移动到天线B的区域的情况下,需要进行天线间切换。 在叠加两个天线的覆盖区域的情况下,在反向通信中获得宏分集效应。
    • 9. 发明公开
    • 코드분할다중접속 이동통신 시스템의 성능 분석을 위한무선채널 모사시험방법 및 장치
    • CDMA移动通信系统分析性能的无线信道模拟方法及装置
    • KR1020010048715A
    • 2001-06-15
    • KR1019990053514
    • 1999-11-29
    • 한국전자통신연구원
    • 조호신신성문진고환
    • H04B17/00
    • H04B17/40H04B1/707H04W24/06
    • PURPOSE: A radio channel simulation method and an apparatus for analyzing performance of CDMA mobile communication system are provided to simulate various radio environments in a test center by simple controlling through a personal computer and discover any shortcomings at early stage and facilitate improving a performance by repeatedly performing simulation containing a handoff function in a development stage of a system. CONSTITUTION: Interference generators(112,121) generate additive white Gaussian noise to make an interference effect by a different user and a different base station in a backward and forward channel. The noise is applied in two mode, of which one applies the noise on a radio channel by the absolute amount to test an influence of the interference according to a traffic change in a neighboring cell or the same cell, and the other charges an applied amount of the noise while constantly maintaining a signal-to-noise ratio. Fading emulators(111,122) converts a signal so that a fading effect can be contained in an input signal similarly to an actual radio environment. The fading emulators(111,122) constructs the maximum 6 multiple paths by channels and controls a time delay, a power attenuation, a mobility speed of a mobile station and a fading distribution. A radio variable attenuator(130) emulates a path loss of the radio channel. Program attenuators(133,134) and fixed attenuators(131,132) are positioned at a forward and a backward radio link between two base stations(BTS1,BTS1) and the mobile station(MS) to control an attenuation amount. The program attenuators control the relative size of the attenuation amount by links formed between the base stations and the mobile station and emulates the path loss differentiated depending on the position of the mobile station. A controller(140) remotely controls the interference generators(112,121), the fading emulators(111,122) and the radio variable attenuator(130) by using a GPIB interface.
    • 目的:提供一种用于分析CDMA移动通信系统性能的无线电信道仿真方法和装置,用于通过简单的个人计算机控制来测试测试中心的各种无线电环境,并在早期发现任何缺点,并通过反复地提高性能 在系统的开发阶段执行包含切换功能的模拟。 构成:干扰发生器(112,121)产生加性白高斯噪声,以在后向和向前信道中由不同的用户和不同的基站产生干扰效应。 在两种模式中应用噪声,其中一种是在无线电信道上施加绝对量的噪声,以根据相邻小区或同一小区中的业务量变化来测试干扰的影响,另一种对应用量 的噪声,同时保持信噪比。 衰落仿真器(111,122)转换信号,使得类似于实际的无线电环境,可以在输入信号中包含衰落效应。 衰落仿真器(111,122)通过信道构建最大6个多路径,并控制时延,功率衰减,移动台的移动速度和衰落分布。 无线电可变衰减器(130)模拟无线电信道的路径损耗。 节目衰减器(133,134)和固定衰减器(131,132)位于两个基站(BTS1,BTS1)和移动台(MS)之间的前向和后向无线电链路上,以控制衰减量。 程序衰减器通过在基站和移动站之间形成的链路来控制衰减量的相对大小,并且模拟根据移动站的位置而不同的路径损耗。 控制器(140)通过使用GPIB接口来远程控制干扰发生器(112,121),衰落仿真器(111,122)和无线电可变衰减器(130)。