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    • 2. 发明申请
    • Synchronization of terminals in a radio link system
    • 无线电链路系统中终端的同步
    • US20050282570A1
    • 2005-12-22
    • US11212698
    • 2005-08-29
    • Otto PulkkinenJarmo MakinenLauri Kuru
    • Otto PulkkinenJarmo MakinenLauri Kuru
    • H04J3/06H04B7/26H04L7/00H04L12/28H04W56/00H04W92/10H04Q7/20
    • H04W56/0015H04B7/2678H04W92/10
    • The objective of the invention is to increase the potential hop density of single frequency TDD radio links by allowing a set of closely located terminals to use a single channel. This is possible when transmission and reception periods of the terminals are synchronized so that the transmit period of any of the terminals in a terminal group does not overlap with the receive period of any of the terminals in the group. Synchronization is achieved by selecting at least one terminal in a hub site as a super master terminal. This terminal gives timing through a common bus to the rest of the terminals in the group These terminals use the received timing for adjusting their own timing i.e. for adjusting the starting moment and ending moment of the transmission and reception periods in such a manner that none of terminals is sending a burst while another terminal is receiving.
    • 本发明的目的是通过允许一组紧密定位的终端来使用单个信道来增加单频TDD无线电链路的潜在跳跃密度。 这在终端的发送和接收周期是同步的情况下是可能的,使得终端组中的任何终端的发送周期与组中的任何终端的接收周期不重叠。 通过将集线器站点中的至少一个终端选择为超级主终端来实现同步。 该终端通过公共总线给组中的其余终端提供定时。这些终端使用接收到的定时来调整它们自己的定时,即用于调整发送和接收周期的起始时刻和结束时刻,使得没有一个 终端正在发送突发,而另一个终端正在接收。
    • 5. 发明授权
    • Control of transmission power in a radio system
    • 无线电系统中发射功率的控制
    • US07647062B2
    • 2010-01-12
    • US09909039
    • 2001-07-19
    • Jarmo MakinenJari Rahkala
    • Jarmo MakinenJari Rahkala
    • H04B7/00
    • H04W52/24H04W52/10H04W52/20
    • The invention relates to a method for controlling transmission power in a radio system, preferably in a radio link system. To establish a power control mechanism which is capable of taking into account the various phenomena affecting the performance of the radio connection and which can also respond to degrading signal quality before bit errors begin to occur, pseudo errors, i.e. decision-making instants at which a symbol error nearly occurred, are monitored at the receiving end. The transmission power is then decreased when the rate of the pseudo errors is below a predetermined threshold and increased when pseudo errors occur so that a predetermined criterion is fulfilled.
    • 本发明涉及一种在无线电系统中优选地在无线电链路系统中控制发射功率的方法。 为了建立能够考虑到影响无线电连接的性能的各种现象的功率控制机制,并且还可以在比特错误开始发生之前响应劣化的信号质量,即伪错误,即决策时刻 符号错误几乎发生,在接收端进行监控。 然后,当伪错误的速率低于预定阈值时,发送功率减小,并且当伪错误发生时增加,从而满足预定标准。
    • 8. 发明授权
    • Fade margin measurement in a radio system
    • 在无线电系统中衰落余量测量
    • US06205172B1
    • 2001-03-20
    • US09513281
    • 2000-02-24
    • Jarmo Makinen
    • Jarmo Makinen
    • H04B1700
    • H04B17/20
    • The invention relates to a method for measuring the fade margin in a radio system. The system comprises at least one transmitter (11a; 11b) and at least one receiver (12b; 12a) which in an operational situation establish a fixed radio connection. In the method, the receiver is calibrated by supplying the receiver with an input signal at several different power levels and determining the correspondence between the supplied signal level and a quantity detected by the receiver. To enable the fade margin to be determined as simply as possible, (a) the calibration is carried out in such a way that at least one supplied power level is close to the noise level of the receiver, (b) in a situation where substantially mere noise is suued into the payload signal, a threshold value (PTH1) for the received signal level, corresponding to a predetermined bit error ratio, is determined for the receiver (c), in an operational situation of the radio system, the signal level arriving at the receiver is determined without payload signal, (d) on the basis of the calibration data and the level determined in step (c), that threshold value for the received signal level which corresponds to said predetermined bit error ratio in the operational situation of the radio system is determined, and (e) the fade margin is determined on the basis of the threshold value for the operational situation and the signal level measured in the operational situation of the system.
    • 本发明涉及一种用于测量无线电系统中的衰减余量的方法。 该系统包括至少一个发射器(11a; 11b)和至少一个接收器(12b; 12a),其在操作情况下建立固定的无线电连接。 在该方法中,通过向接收机提供几个不同功率电平的输入信号并确定提供的信号电平与由接收机检测到的量之间的对应关系来校准接收机。 为了能够尽可能简单地确定衰落余量,(a)校准是以至少一个所提供的功率电平接近接收机的噪声电平的方式进行的,(b)在基本上 单纯的噪声被带入有效载荷信号,对于接收机(c),在无线电系统的操作情况下确定对应于预定比特误码率的接收信号电平的阈值(PTH1),信号电平 在没有有效载荷信号的情况下确定到达接收机,(d)基于校准数据和在步骤(c)中确定的电平,在操作情况下对应于所述预定比特误差率的接收信号电平的阈值 确定无线电系统,并且(e)基于操作情况的阈值和在系统的操作情况下测量的信号电平来确定衰落余量。
    • 10. 发明申请
    • Beam adjusting device
    • 光束调整装置
    • US20090040105A1
    • 2009-02-12
    • US11920879
    • 2006-05-31
    • Jarmo MakinenOlov EkervikDaniel Akesson
    • Jarmo MakinenOlov EkervikDaniel Akesson
    • H01Q3/26
    • H01Q3/32H01P1/184H01P3/087H01Q3/005
    • The present invention relates to a device for adjusting the beam direction of an antenna. The device has a source connection terminal to be connected to a signal source and at least two feed connection terminals to be connected to antenna element feed points. A feed line structure is elongated in a main direction at a distance from and in parallel to a fixed ground plane on at least one side of said feed line structure, wherein a movable dielectric element is located between said feed line structure and said ground plane so as to change the signal phase of signal components being transferred between said source connection terminal and the respective feed connection terminals. The device includes means for allowing said ground plane to be positioned relatively close to said feed line structure without risking accidental contact between said feed line structure and said ground plane.
    • 本发明涉及一种用于调整天线的波束方向的装置。 该装置具有要连接到信号源的源极连接端子和要连接到天线元件馈电点的至少两个馈电连接端子。 馈电线结构在所述馈线结构的至少一侧上与固定接地平面距离并平行于主方向延伸,其中可移动电介质元件位于所述馈线结构和所述接地平面之间,因此 以改变在所述源极连接端子和各个馈电连接端子之间传输的信号分量的信号相位。 该装置包括用于允许所述接地平面相对靠近所述馈线结构定位的装置,而不会导致所述馈线结构与所述接地平面之间的意外接触。