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    • 3. 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。
    • 4. 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。
    • 8. 发明申请
    • TIME-ERROR AND FREQUENCY-ERROR CORRECTION IN A MULTI-CARRIER WIRELESS COMMUNICATIONS SYSTEM
    • 多载波无线通信系统中的时间误差和频率误差校正
    • WO2009127357A2
    • 2009-10-22
    • PCT/EP2009/002634
    • 2009-04-09
    • TELEFONAKTIEBOLAGET L M ERICSSON (publ)LINDOFF, BengtBERNHARDSSON, BoNORDSTRÖM, Fredrik
    • LINDOFF, BengtBERNHARDSSON, BoNORDSTRÖM, Fredrik
    • H04L27/00H04B1/38H04B1/40H04B1/00
    • H04L27/0014
    • Methods and apparatus for automatic frequency control in wireless receivers configured to simultaneously receive multiple carrier signals at distinct radio frequencies are disclosed. An exemplary wireless device comprises at least first and second radio front-end circuits configured to receive first and second wireless communication signals transmitted via first and second radio-frequency carriers at distinct first and second radio frequencies, respectively, a control processor configured to designate a master carrier signal and a slave carrier signal from among the received wireless communication signals, and a frequency error estimation circuit configured to estimate a first receiver frequency error using the received master carrier signal. The control processor is further configured to calculate a second receiver frequency error from the first receiver frequency error, for use in compensating one or more receiver processes performed on the slave carrier signal.
    • 公开了用于在不同射频同时接收多载波信号的无线接收机中的自动频率控制的方法和装置。 示例性无线设备包括至少第一和第二无线电前端电路,其被配置为分别接收在不同的第一和第二无线电频率处经由第一和第二无线电频率载波发送的第一和第二无线通信信号,控制处理器被配置为指定 来自所接收的无线通信信号中的主载波信号和从载波信号;以及频率误差估计电路,被配置为使用所接收的主载波信号来估计第一接收机频率误差。 控制处理器还被配置为从第一接收机频率误差计算第二接收机频率误差,用于补偿对从属载波信号执行的一个或多个接收机处理。