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    • 3. 发明申请
    • METHOD OF TRANSMITTING AND RECEIVING POWER CONTROL MESSAGES IN A CDMA CELLULAR RADIO SYSTEM
    • CDMA蜂窝无线电系统中发送和接收功率控制消息的方法
    • WO1995019664A1
    • 1995-07-20
    • PCT/FI1995000007
    • 1995-01-11
    • NOKIA TELECOMMUNICATIONS OYNOKIA MOBILE PHONES LTD.KESKITALO, IlkkaRIKKINEN, KariOJANPERÄ, Tero
    • NOKIA TELECOMMUNICATIONS OYNOKIA MOBILE PHONES LTD.
    • H04B07/005
    • H04W52/54H04B7/2628
    • The invention relates to a data transmission method in a CDMA cellular radio system, which comprises in each cell at least one base station (10) communicating with mobile stations (11, 12) within its coverage area and in which system the base station adjusts the transmitting power of the mobile stations within its area by means of power control messages. To enable coherent detection also at the base station, i.e. also in the uplink direction (from mobile station to base station), according to the method, the transmission on the traffic channel is performed both in the direction from the mobile station to the base station and from the base station to the mobile station by using a similar frame structure. When the base station transmits a power control message to the mobile station by using bits of the frame structure of the traffic channel, the mobile station transmits a predetermined bit pattern to the base station in the corresponding bits of the other transmission direction of the traffic channel.
    • 本发明涉及CDMA蜂窝无线电系统中的一种数据传输方法,它包括在每个小区中至少一个基站(10)与其覆盖区域内的移动台(11,12)进行通信,并且基站在哪个系统中调整 通过功率控制消息在其区域内发送移动站的功率。 为了在基站(也就是从移动台到基站)也能够进行相干检测,根据该方法,在从移动站到基站的方向上进行业务信道上的传输 并通过使用类似的帧结构从基站到移动台。 当基站通过业务信道的帧结构的比特发送功率控制消息给移动站时,移动台在业务信道的另一个传输方向的相应比特中向基站发送预定的比特模式 。
    • 5. 发明申请
    • A METHOD FOR CONTROLLING TRANSMITTING POWER AND A RADIO SYSTEM
    • 一种用于控制发射功率和无线电系统的方法
    • WO1997026716A2
    • 1997-07-24
    • PCT/FI1997000022
    • 1997-01-17
    • NOKIA TELECOMMUNICATIONS OYNOKIA MOBILE PHONES LTD.SAARIO, EijaSALONAHO, Oscar
    • NOKIA TELECOMMUNICATIONS OYNOKIA MOBILE PHONES LTD.
    • H04B07/005
    • H04W52/221H04W52/362
    • The invention relates to a radio system and a method for controlling transmitting power in a radio system comprising one base station or several base stations (100) communicating with subscriber terminal equipments (106 to 110) located within its area, in which method the transmitting power of the equipments is controlled stepwise by power control commands and in which method the step size of a change in transmitting power is adjusted separately for each connection. To make an accurate and fast power control possible, the step size is adjusted in the method of the invention on the basis of several received successive power control commands in such a way that from the power control commands to be examined is calculated the number of two successive commands in different directions in proportion to the number of the commands to be examined and that the calculated proportion is compared to a reference value, and that the step size is adjusted on the basis of said comparison.
    • 本发明涉及一种用于控制无线电系统中的发射功率的无线电系统和方法,所述无线电系统包括与位于其区域内的用户终端设备(106至110)通信的一个基站或多个基站(100),所述方法中的发射功率 的设备通过功率控制命令逐步控制,并且在哪种方法中,针对每个连接分别调整发射功率变化的步长。 为了使得准确和快速的功率控制成为可能,在本发明的方法中,基于几个接收的连续的功率控制命令来调整步长,使得从被检查的功率控制命令计算出两个 与所检查的命令的数量成比例的不同方向的连续命令,并将计算的比例与参考值进行比较,并且基于所述比较来调整步长。
    • 7. 发明申请
    • SIGNAL DETECTION IN A TDMA SYSTEM
    • TDMA系统中的信号检测
    • WO1996011533A2
    • 1996-04-18
    • PCT/FI1995000551
    • 1995-10-05
    • NOKIA TELECOMMUNICATIONS OYNOKIA MOBILE PHONES LTD.HOTTINEN, AriRANTA, PekkaHONKASALO, ZhiChunJOKINEN, Harri
    • NOKIA TELECOMMUNICATIONS OYNOKIA MOBILE PHONES LTD.
    • H04B07/005
    • H04B7/2643H04L25/0204
    • The present invention relates to an improved signal detection method in a TDMA mobile system with co-channel interference. In the method, a primary signal (r1) and at least one interfering co-channel signal (r2-rN) are received on the same TDMA channel (F1, TS3). The co-channel signals propagate through multipath channels (hL,1...hL,N) independent of one another, which provide them with a unique wave form coding. In addition, the co-channel signals have different but known training sequences. In the invention, the multipath channel estimates of the primary signal (r1) and said at least one interfering co-channel signal (r2-rN) are determined by means of the received training sequences. After this, the primary signal is detected by utilizing the transmission channel estimates of both the primary signal and said at least one interfering co-channel signal. The invention also relates to receivers for implementing the method of the invention.
    • 本发明涉及具有同信道干扰的TDMA移动系统中的改进的信号检测方法。 在该方法中,在同一TDMA信道(F1,TS3)上接收主信号(r1)和至少一个干扰同信道信号(r2-rN)。 同频道信号通过多路径信道(hL,1 ... hL,N)彼此独立地传播,为它们提供了唯一的波形编码。 另外,同频道信号具有不同但已知的训练序列。 在本发明中,通过接收到的训练序列来确定主信号(r1)和所述至少一个干扰同信道信号(r2-rN)的多径信道估计。 之后,通过利用主信号和所述至少一个干扰同信道信号的传输信道估计来检测主信号。 本发明还涉及用于实现本发明方法的接收机。
    • 9. 发明申请
    • METHOD FOR DETERMINING STRENGTH OF CO-CHANNEL SIGNALS, AND A RECEIVER
    • 用于确定共通道信号强度的方法和接收器
    • WO1998001959A1
    • 1998-01-15
    • PCT/FI1997000431
    • 1997-07-02
    • NOKIA TELECOMMUNICATIONS OYNOKIA MOBILE PHONES LTD.PUKKILA, MarkkuRANTA, Pekka
    • NOKIA TELECOMMUNICATIONS OYNOKIA MOBILE PHONES LTD.
    • H04B01/10
    • H04B7/0848H04B7/005
    • The invention relates to a method for determining strength of co-channel signals, and a receiver utilizing the method. The training sequences of the signals to be received are classified into subsets (21), and a channel estimate (22) related to the signal is formed by comparing the training sequences of the received signal to the training sequences of the subset signals. By means of the channel estimate, a strength estimate (23 - 24) is formed for each received signal, the estimate being used to arrange the received signals (27) according to their strength. When the signal strengths are known, it is possible to decrease the effect of the interference signals on the signal to be detected. In a diversity receiver, a correlation result can be formed of the channel estimates of the signals of each subset, excluding the signal to be detected, the result being used in interference elimination.
    • 本发明涉及一种用于确定同频道信号的强度的方法,以及一种利用该方法的接收机。 要接收的信号的训练序列被分类为子集(21),并且通过将接收信号的训练序列与子集信号的训练序列进行比较来形成与信号相关的信道估计(22)。 通过信道估计,对于每个接收信号形成强度估计(23-24),该估计用于根据其强度来布置接收信号(27)。 当信号强度已知时,可以减小干扰信号对待检测信号的影响。 在分集接收机中,相关结果可以由每个子集的信号的信道估计构成,不包括要检测的信号,用于干扰消除的结果。