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    • 1. 发明申请
    • CELL SEARCH SCHEDULING IN A WIRELESS CELLULAR COMMUNICATIO NETWORK
    • 在无线蜂窝通信网络中的小区搜索调度
    • WO2004107784A1
    • 2004-12-09
    • PCT/EP2004/004884
    • 2004-05-07
    • TELEFONAKTIEBOLAGET LM ERICSSON (publ)LINDOFF, BengtPALENIUS, TorgnyERICSSON, Anders
    • LINDOFF, BengtPALENIUS, TorgnyERICSSON, Anders
    • H04Q7/32
    • H04W48/16H04W8/26H04W48/08H04W52/0216H04W56/00H04W68/00H04W84/042
    • A method performed by a mobile communication unit (10) when operating in stand-by mode in a wireless cellular communication network. The receiver is activated in periods of relatively short duration (τ o ) to receive paging indicators (21) from the serving base station (20) and to receive identifying signals from the remote base station (30). After the first period a likelihood is assessed that a remote cell has been detected, and following the first period the receiver is activated in a second period of a duration (τ 1 ) depending an the assessed likelihood. If a remote cell has likely been detected, the second duration is longer than the first duration. Most of its stand-by time the mobile terminal will not detect a new cell, and most of the periods with the receiver activated will therefore be of the short first duration, the Power consumption of the receiver will be correspondingly reduced, and the stand-by time is correspondingly increased.
    • 一种在无线蜂窝通信网络中以待机模式操作时由移动通信单元(10)执行的方法。 接收机在相对短的持续时间(tauo)的周期中被激活以从服务基站(20)接收寻呼指示符(21)并且从远程基站(30)接收识别信号。 在第一阶段之后,评估出可能性已经检测到远程小区,并且在第一周期之后,根据所评估的可能性,接收机在持续时间(τ1)的第二周期中被激活。 如果可能检测到远程小区,则第二个持续时间长于第一个持续时间。 其大部分的待机时间,移动终端将不会检测到新的小区,并且接收机激活的大多数周期因此将处于短的第一时间段,接收机的功耗将相应地减少, 按时间相应增加。
    • 4. 发明申请
    • USER CONTROLLED TRANSMIT POWER CONTROL DURING HANDOVER IN A CDMA SYSTEM
    • CDMA系统中切换过程中的用户控制发射功率控制
    • WO2006063842A1
    • 2006-06-22
    • PCT/EP2005/013563
    • 2005-12-16
    • TELEFONAKTIEBOLAGET L M ERICSSON (publ)LINDOFF, BengtPALENIUS, Torgny
    • LINDOFF, BengtPALENIUS, Torgny
    • H04Q7/32H04B7/005
    • H04W52/40H04W36/08H04W52/08H04W52/10H04W72/0473
    • A method and device for controlling a mobile user equipment being in radio communication with base stations of a wireless communication system. The transmit power of the user equipment is controlled by the communication system. Immediately before sending an event message by the user equipment, the transmit power is increased by the user equipment, in order to increase the likelihood that the message is properly received by the base station. The message may be a soft handover event message. The transmit power is increased by opening a closed loop power control circuit, which normally controls the transmit power of the user equipment. By opening the closed loop circuit, the user equipment takes over the control of its transmitted power for increase thereof. Following the sending of the message, the user equipment may control the base station to send with increased power by increasing a target signal-to-interference ratio value (SIR ref ) by means of which the base station power level is controlled. In this way, the likelihood of receiving any acknowledgement messages and event messages from the base station is increased.
    • 一种用于控制与无线通信系统的基站进行无线电通信的移动用户设备的方法和设备。 用户设备的发射功率由通信系统控制。 在用户设备发送事件消息之前,由用户设备增加发送功率,以增加基站正确接收消息的可能性。 消息可以是软切换事件消息。 通过打开通常控制用户设备的发射功率的闭环功率控制电路来增加发射功率。 通过打开闭环电路,用户设备接管其发射功率的控制以增加其。 在发送消息之后,用户设备可以通过增加目标信号干扰比值(SIR SUB ref ref)来控制基站以增加的功率发送,基站功率 水平受到控制。 以这种方式,增加了从基站接收任何确认消息和事件消息的可能性。
    • 7. 发明申请
    • INTERFERENCE ESTIMATION IN CDMA SYSTEMS USING ALTERNATIVE SCRAMBLING CODES
    • 使用替代性扫描码的CDMA系统中的干扰估计
    • WO2005046073A1
    • 2005-05-19
    • PCT/EP2004/012251
    • 2004-11-01
    • TELEFONAKTIEBOLAGET L M ERICSSON (publ)NILSSON, JohanPALENIUS, TorgnyLINDOFF, Bengt
    • NILSSON, JohanPALENIUS, TorgnyLINDOFF, Bengt
    • H04B1/707
    • H04B1/7103H04B2201/70701H04B2201/70709
    • Methods and apparatus that improve interference (Ι) estimation in CDMA systems in which the DPCH is sorted under a scrambling code different from the scrambling code of a channel such as the CPICH are described. In such systems, DPCH Ι-estimation cannot be done by measuring on the CPICH and transforming to the DPCH due to the different interference situations on the two channels. Instead, the DPCH interference is estimated by using knowledge of empty channelization codes in the alternative or secondary scrambling code that can be used for Ι estimation, or using symbols (e.g., control symbols on the DPCCH) on the DPCH, or searching for an empty channelization code and using a found empty code for Ι-estimation.These techniques improve the SIR estimate in comparison to prior techniques and hence also improve the performance of power control, increasing the system’s capacity.
    • 描述了在CDMA系统中改善干扰(Iota)估计的方法和装置,其中DPCH在不同于诸如CPICH的信道的扰码之类的扰码下排序。 在这种系统中,DPCH Iota估计不能通过在CPICH上测量并且由于两个信道上的不同干扰情况而转换到DPCH来完成。 相反,通过使用可用于Iota估计的替代或辅助扰码中的空信道化码的知识,或者使用DPCH上的符号(例如DPCCH上的控制符号)或搜索空的 信道化代码,并使用发现的空代码进行Iota估计。与以前的技术相比,这些技术改进了SIR估计,从而也提高了功率控制的性能,增加了系统的容量。
    • 10. 发明申请
    • IDENTIFYING A SEQUENCE OF RECEIVED SIGNALS
    • 识别接收到的信号的序列
    • WO2009083336A1
    • 2009-07-09
    • PCT/EP2008/065853
    • 2008-11-19
    • TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)LINDOFF, Bengt
    • LINDOFF, Bengt
    • H04L27/26
    • H04L27/2613H04J11/0069H04L5/0016
    • A sequence of received signals is identified, by a receiver of signals transmitted via a channel of a wireless communications system, as one of a number of known orthogonal sequences. The sequence of received signals is received (103); a modified sequence is calculated (105) by replacing some of the received signals by their complex conjugate values; the modified sequence is correlated (106) with each one of the number of known orthogonal sequences to obtain a correlation result for each of the known sequences; and the sequence of received signals is identified (107) as the known sequence having the largest correlation result. When some signals in the received sequence are complex conjugated before being correlated with the known sequences, the correlation sum will increase so that even in case of a considerable frequency error the correlation sum for the correct sequence will be sufficiently large to be distinguished from noise.
    • 通过无线通信系统的信道发送的信号的接收机识别接收信号的序列,作为多个已知正交序列之一。 接收信号的序列(103); 通过用接合信号的复共轭值代替一些接收信号来计算修正序列(105) 修改的序列与已知正交序列的数量中的每一个相关(106)以获得每个已知序列的相关结果; 并且识别接收信号的序列(107)作为具有最大相关结果的已知序列。 当接收到的序列中的一些信号在与已知序列相关之前是复共轭时,相关和将增加,使得即使在相当大的频率误差的情况下,正确序列的相关和将足够大以与噪声区分开。