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    • 12. 发明申请
    • BANDWIDTH ASYMMETRIC COMMUNICATION SYSTEM
    • 带宽不对称通信系统
    • WO2008004154A2
    • 2008-01-10
    • PCT/IB2007/052394
    • 2007-06-21
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.DU, Yonggang
    • DU, Yonggang
    • H04B7/26
    • H04B7/2621H04L5/0007H04L5/0046H04L25/0226H04L27/2605H04L27/2613H04L27/2628H04L27/265H04L27/2656H04L27/2657H04L27/2662H04W56/0005
    • The present invention relates to a bandwidth asymmetric communication system comprising at least one terminal having an uplink transmission unit (1) for transmitting radio frequency OFDM signals at a radio frequency and an access point having an uplink receiving unit (4) for receiving said radio frequency OFDM signals, said OFDM signals being Orthogonal Frequency Division Multiplex (OFDM) modulated. To reduce the implementation complexity and synchronization requirements a communication system is proposed in which the bandwidth of said uplink transmission unit and of the transmitted radio frequency OFDM signals is smaller than the bandwidth of said uplink receiving unit. Further, a communication system is proposed in which the bandwidth of a downlink transmission unit (7) of the access point is larger than the bandwidth of a downlink receiving unit (11) of the at least one terminal and in which the downlink transmission unit is adapted to generate and transmit radio frequency OFDM signals having a bandwidth that is smaller than the bandwidth of the downlink transmission unit and that is equal to the bandwidth of the downlink receiving unit. Still further, the present invention relates to a communication method, to a terminal and to an access point for use in such a communication system.
    • 带宽非对称通信系统技术领域本发明涉及一种带宽非对称通信系统,包括至少一个终端,具有用于以射频发送射频OFDM信号的上行链路传输单元(1)和具有上行接收单元(4)的接入点,用于接收所述射频 OFDM信号,所述OFDM信号是正交频分复用(OFDM)调制的。 为了降低实施复杂度和同步要求,提出了一种通信系统,其中所述上行链路传输单元和发射的射频OFDM信号的带宽小于所述上行链路接收单元的带宽。 此外,提出了一种通信系统,其中接入点的下行链路传输单元(7)的带宽大于所述至少一个终端的下行链路接收单元(11)的带宽,并且其中下行链路传输单元 适于产生和发送具有比下行链路传输单元的带宽小的带宽的等于下行链路接收单元的带宽的射频OFDM信号。 另外,本发明涉及到在这种通信系统中使用的终端和接入点的通信方法。
    • 16. 发明申请
    • AN APPARATUS FOR CONTROLLING SPACING OF EACH ELEMENT IN AN ANTENNA ARRAY
    • 用于控制天线阵列中每个单元的间隔的装置
    • WO2005029641A1
    • 2005-03-31
    • PCT/IB2004/051672
    • 2004-09-02
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.DU, YonggangYUAN, Yun
    • DU, YonggangYUAN, Yun
    • H01Q3/04
    • H04B7/08H01Q1/242H01Q3/04H01Q3/06H01Q21/28
    • An apparatus for controlling spacing of each element for an antenna array in a wireless communication equipment, comprising: a plurality of antenna elements, for receiving and transmitting radio signals, wherein at least one antenna element's position is adjustable; at least one connecting unit, connected with the position-adjustable antenna element, for changing said antenna element's position and transferring the radio signals received by said antenna element, and transferring the radio signals to be transmitted by said wireless communication equipment to said antenna element; and at least one feeding component, connected with said connecting unit, for outputting the radio signals transferred through said connecting unit, and transferring the radio signals to be transmitted to said connecting unit.
    • 一种用于控制无线通信设备中的天线阵列的每个元件的间隔的装置,包括:多个天线元件,用于接收和发送无线电信号,其中至少一个天线元件的位置是可调节的; 与所述位置可调节天线元件连接的至少一个连接单元,用于改变所述天线元件的位置并传送由所述天线元件接收的无线电信号,并将要由所述无线通信设备发射的无线电信号传送到所述天线元件; 以及与所述连接单元连接的至少一个馈送部件,用于输出通过所述连接单元传送的无线电信号,并传送要发送到所述连接单元的无线电信号。
    • 20. 发明申请
    • MULTI-USER DETECTION IN MOBILE TERMINAL FOR REDUCING INTERFERENCE
    • 移动终端的多用户检测功能可减少干扰
    • WO2003061150A1
    • 2003-07-24
    • PCT/IB2002/005249
    • 2002-12-09
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.DU, YonggangWANG, Dong
    • DU, YonggangWANG, Dong
    • H04B1/707
    • H04B1/7107H04J13/0077
    • Interference cancellation in a mobile terminal (4) in telecommunication systems like Direct Sequence - Code Division Multiple Access systems or DS-CDMA systems can be improved by providing the mobile terminal (4) with a multi-user detector (41,42,43). These multi-user detectors require the spreading codes of other mobile terminals (2,3,5,6,7,8,9), which spreading codes are available in base stations (1) and thus need to be sent to said mobile terminal (4). By further transmitting power information of other mobile terminals (2,3,5,6,7,8,9) to the mobile terminal (4), a selector (52) can make an intelligent selection in said mobile terminal (4) and select the most important spreading codes thereby reducing the computational complexity. By locating a selector (22) in a base station (1), an intelligent selection can also be made in said base station. Preferably a selection is made per antenna sector and/or in dependence of antenna sectors, in which case direction information of other mobile terminals (2,3,5,6,7,8,9) need to be used.
    • 通过向移动终端(4)提供多用户检测器(41,42,43),可以改善诸如直接序列 - 码分多址系统或DS-CDMA系统的电信系统中的移动终端(4)中的干扰消除 。 这些多用户检测器需要其他移动终端(2,3,5,6,7,8,9)的扩展码,这些扩展码在基站(1)中可用,因此需要发送到所述移动终端 (4)。 通过进一步向移动终端(4)发送其他移动终端(2,3,5,6,7,8,9)的功率信息,选择器(52)可以在所述移动终端(4)和 选择最重要的扩展码,从而降低计算复杂度。 通过将选择器(22)定位在基站(1)中,也可以在所述基站中进行智能选择。 优选地,根据天线扇区和/或根据天线扇区进行选择,在这种情况下,需要使用其他移动终端的方向信息(2,3,5,6,7,8,9)。