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    • 2. 发明授权
    • Method and apparatus for cell selection in a mobile communication system
    • 移动通信系统中小区选择的方法和装置
    • US07965672B2
    • 2011-06-21
    • US11713581
    • 2007-03-02
    • Chang-Young Kim
    • Chang-Young Kim
    • H04Q1/00
    • H04W36/22H04W64/006
    • Disclosed is a method and apparatus for cell selection, which can prevent the occurrence of an error in the cell selection in a mobile communication system supporting the hierarchical cell structure. The method includes: when the number of times of cell reselection during a cell reselection time period given to a particular User Equipment (UE) located within a micro cell exceeds a predetermined maximum number of times, determining if a sum of actual occupancy time intervals of the particular UE in Node Bs, services of which the particular UE has used up to then, is smaller than a predetermined value; and when the sum of actual occupancy time intervals of the particular UE in Node Bs, services of which the particular UE has used up to then, is smaller than the predetermined value, determining that the UE is in a low speed state and maintaining the micro cell as a service cell for the UE.
    • 公开了一种用于小区选择的方法和装置,其可以防止在支持分层小区结构的移动通信系统中小区选择中出现错误。 该方法包括:当在位于微小区内的特定用户设备(UE)的小区重选时间段内的小区重选次数超过预定的最大次数时,确定是否实际占用时间间隔的总和 节点B中的特定UE(特定UE已经使用的服务)小于预定值; 并且当节点B中的特定UE的实际占用时间间隔的总和(特定UE已经用尽的服务)小于预定值时,确定UE处于低速状态并保持微处理器 小区作为UE的服务小区。
    • 3. 发明授权
    • Apparatus and method for preventing degradation of RF performance due to impedance change of antenna in mobile communication terminal
    • 用于防止由于移动通信终端中的天线的阻抗变化引起的RF性能劣化的装置和方法
    • US07929987B2
    • 2011-04-19
    • US11702903
    • 2007-02-06
    • Yeon-Joo LeeSung-Min LeeChang-Young KimJeong-Hun Kim
    • Yeon-Joo LeeSung-Min LeeChang-Young KimJeong-Hun Kim
    • H04M1/00
    • H03F1/56
    • Disclosed are an apparatus and a method for preventing the degradation of RF performance due to a change in impedance of an antenna in a mobile communication terminal. The mobile communication terminal includes a plurality of impedance matching circuits and a controller of the mobile communication terminal is adapted to measure the reflection voltage of the antenna, select one impedance matching circuit corresponding to the measured reflection voltage, and connected with the antenna through the selected impedance matching circuit. As a result, when the impedance value of the antenna is changed, it is possible to prevent the degradation of performance of the RF module of the mobile communication terminal by using an impedance matching circuit, which can optimize the reflection loss caused by the reflection voltage of the antenna according to a change in impedance value.
    • 公开了一种用于防止由于移动通信终端中的天线的阻抗变化引起的RF性能劣化的装置和方法。 移动通信终端包括多个阻抗匹配电路,并且移动通信终端的控制器适于测量天线的反射电压,选择与所测量的反射电压相对应的一个阻抗匹配电路,并通过所选择的与天线连接 阻抗匹配电路。 结果,当天线的阻抗值改变时,可以通过使用阻抗匹配电路来防止移动通信终端的RF模块的性能的劣化,该阻抗匹配电路可以优化由反射电压引起的反射损耗 的天线根据阻抗值的变化。
    • 6. 发明申请
    • Method and apparatus for cell selection in a mobile communication system
    • 移动通信系统中小区选择的方法和装置
    • US20070213061A1
    • 2007-09-13
    • US11713581
    • 2007-03-02
    • Chang-Young Kim
    • Chang-Young Kim
    • H04Q7/20
    • H04W36/22H04W64/006
    • Disclosed is a method and apparatus for cell selection, which can prevent the occurrence of an error in the cell selection in a mobile communication system supporting the hierarchical cell structure. The method includes: when the number of times of cell reselection during a cell reselection time period given to a particular User Equipment (UE) located within a micro cell exceeds a predetermined maximum number of times, determining if a sum of actual occupancy time intervals of the particular UE in Node Bs, services of which the particular UE has used up to then, is smaller than a predetermined value; and when the sum of actual occupancy time intervals of the particular UE in Node Bs, services of which the particular UE has used up to then, is smaller than the predetermined value, determining that the UE is in a low speed state and maintaining the micro cell as a service cell for the UE.
    • 公开了一种用于小区选择的方法和装置,其可以防止在支持分层小区结构的移动通信系统中小区选择中出现错误。 该方法包括:当在位于微小区内的特定用户设备(UE)的小区重选时间段内的小区重选次数超过预定的最大次数时,确定是否实际占用时间间隔的总和 节点B中的特定UE(特定UE已经使用的服务)小于预定值; 并且当节点B中的特定UE的实际占用时间间隔的总和(特定UE已经用尽的服务)小于预定值时,确定UE处于低速状态并保持微处理器 小区作为UE的服务小区。
    • 7. 发明申请
    • Mobile communication terminal and control method thereof
    • 移动通信终端及其控制方法
    • US20060073829A1
    • 2006-04-06
    • US11239357
    • 2005-09-30
    • Ki-Ho ChoChang-Young Kim
    • Ki-Ho ChoChang-Young Kim
    • H04Q7/20
    • H04W88/06H04W16/24H04W36/14
    • A mobile communication terminal and a control method thereof are provided, where a plurality of antennas receives signals from systems having different frequency bands and a plurality of system modems communicates with the systems having the different frequency bands, respectively. A switching unit positioned between the plurality of antennas and the plurality of system modems selectively connects the plurality of antennas with the plurality of system modems. In a handover between the systems having the different frequency bands, a controller controls the switching unit to connect the system modem of a handed-over system to a predetermined one of the plurality of antennas.
    • 提供一种移动通信终端及其控制方法,其中多个天线从具有不同频带的系统接收信号,并且多个系统调制解调器分别与具有不同频带的系统进行通信。 位于多个天线和多个系统调制解调器之间的切换单元选择性地将多个天线与多个系统调制解调器连接。 在具有不同频带的系统之间的切换中,控制器控制切换单元将切换系统的系统调制解调器连接到多个天线中的预定的一个天线。
    • 9. 发明授权
    • Method for providing a multicast service using a carrier-to-interference ratio in a hierarchical cell structure
    • 用于在分层小区结构中使用载波干扰比提供多播服务的方法
    • US07286826B2
    • 2007-10-23
    • US10784171
    • 2004-02-24
    • Chang-Young KimIl Han
    • Chang-Young KimIl Han
    • H04Q7/20
    • H04W4/06H04W16/32H04W36/04H04W36/30H04W72/005
    • A method for providing a multicast service from a macrocell or a microcell to a mobile station in a mobile communication system having a hierarchical cell structure in which a given area is divided into at least one macrocell and at least one microcell overlapping with each other. The mobile station receives a multicast service by accessing the macrocell or the microcell according to a carrier-to-interference ratio (C/I) for the multicast service measured in a macrocell area and according to an existence or non-existence of a concurrent call currently in service. When there is no concurrent call currently in service, the mobile station receives the multicast service by accessing the macrocell in an area where the measured C/I is equal to or greater than a required C/I. However, when there is a concurrent call currently in service, the mobile station receives the multicast service by accessing the macrocell or the microcell based on the current cell and the C/I.
    • 一种用于在具有分层小区结构的移动通信系统中从宏小区或微小区向移动台提供多播服务的方法,其中给定区域被划分为至少一个宏小区和至少一个与其相互重叠的微小区。 移动台根据在宏蜂窝区域中测量的多播服务的载波干扰比(C / I),根据是否存在并发呼叫,接入宏小区或微小区,接收组播业务。 目前在服役。 当不存在当前正在进行的并发呼叫时,移动台通过访问所测量的C / I等于或大于所需C / I的区域中的宏小区来接收多播服务。 然而,当存在当前正在服务的并发呼叫时,移动台通过基于当前小区和C / I访问宏小区或微小区来接收多播服务。