Apparatus and method for transmitting and receiving data in a CDMA communication system

    公开(公告)号:US07002901B2

    公开(公告)日:2006-02-21

    申请号:US09729495

    申请日:2000-12-04

    IPC分类号: H04J11/00

    摘要: A method for assigning orthogonal codes used for a first system and a second system in a CDMA system including channels of the first system for spreading a pilot signal, a sync signal, a paging signal and a traffic signal with a first set of orthogonal codes corresponding to orthogonal code numbers in different rows from a set of orthogonal codes arranged in a matrix of m rows and m columns, and channels of the second system for spreading a second set of orthogonal codes corresponding to orthogonal code numbers different from said orthogonal code numbers for the first set of orthogonal codes. The orthogonal codes for the second system are transmitted at a data rate higher than a data rate of the first system. The method comprises the steps of: assigning orthogonal codes corresponding to the orthogonal code numbers of the orthogonal code set associated with at least one of 2n rows to the channels of the first system, wherein a set of the orthogonal codes are arranged in a matrix of subsets of orthogonal codes and inversed orthogonal codes, each subset including 2n rows and 2n columns; and assigning orthogonal codes corresponding to the orthogonal code numbers of the orthogonal code set associated with at least one of the remaining rows to the second system.

    Apparatus and method for gated transmission in CDMA communication system
    2.
    发明授权
    Apparatus and method for gated transmission in CDMA communication system 有权
    CDMA通信系统门控传输装置及方法

    公开(公告)号:US07085254B1

    公开(公告)日:2006-08-01

    申请号:US09584046

    申请日:2000-05-30

    IPC分类号: H04B7/216 H04B7/00

    摘要: A method for transmitting a frame comprised of a plurality of slots over a dedicated control channel in a duration where there is no transmission message from a mobile station to a base station. Each slot in the frame is comprised of a first slot duration and a second slot duration. The first slot duration is provided with a power control signal and the second slot duration is provided with no signal at a partial duration thereof.

    摘要翻译: 一种用于在不存在从移动台到基站的传输消息的持续时间内在专用控制信道上发送由多个时隙组成的帧的方法。 帧中的每个时隙包括第一时隙持续时间和第二时隙持续时间。 第一时隙持续时间被提供有功率控制信号,并且第二时隙持续时间在其部分持续时间处没有被提供信号。

    Apparatus and method for measuring noise power in a CDMA mobile communication system
    3.
    发明授权
    Apparatus and method for measuring noise power in a CDMA mobile communication system 失效
    CDMA移动通信系统中用于测量噪声功率的装置和方法

    公开(公告)号:US06822998B1

    公开(公告)日:2004-11-23

    申请号:US09663643

    申请日:2000-09-18

    IPC分类号: H04B169

    摘要: A noise power measuring system and method for a base station receiver are disclosed. In the system and method, a received signal is despread and the noise power of the despread received signal is estimated. An orthogonal code generator generates a noise power measurement orthogonal code, which is orthogonal to all the orthogonal codes presently being used by the mobile station. A correlator connected to the orthogonal code generator performs a correlation operation between the noise power measurement orthogonal code and the despread received signal. A noise power measurer connected to the correlator, measures the noise power from the output of the correlator.

    摘要翻译: 公开了一种用于基站接收机的噪声功率测量系统和方法。 在系统和方法中,对接收到的信号进行解扩,并且估计解扩的接收信号的噪声功率。 正交码发生器产生噪声功率测量正交码,其与当前正在由移动台使用的所有正交码正交。 连接到正交码发生器的相关器执行噪声功率测量正交码和解扩后的接收信号之间的相关运算。 连接到相关器的噪声功率测量器,测量相关器输出端的噪声功率。

    Transmitting and receiving device and method for continuous outer-loop power control while in DTX mode in a CDMA mobile communication system
    5.
    发明授权
    Transmitting and receiving device and method for continuous outer-loop power control while in DTX mode in a CDMA mobile communication system 有权
    用于在CDMA移动通信系统中以DTX模式进行连续外环功率控制的发射和接收装置和方法

    公开(公告)号:US06950632B1

    公开(公告)日:2005-09-27

    申请号:US09584047

    申请日:2000-05-30

    摘要: A device and method for continuous outer-loop power control on a physical channel which transmits only power control bits and no data while in discontinuous transmission (DTX) mode in a CDMA mobile communication system is disclosed. In the power controlling device according to one aspect of the present invention, a frame error detector detects an error from a frame of predetermined length and generates an error signal indicating whether an error has been generated. A closed-loop power controller compares a threshold with the signal-to-noise ratio (SNR) in each power control group (PCG) in a plurality of periods of the frame and generates power control information according to the comparison result. An outer-loop power controller increases the threshold in order to generate power control information that commands a power increase in response to an error signal indicating the existence of a frame error, and decreases the threshold in order to generate power control information that commands a power decrease in response to an error signal indicating the absence of a frame error. An offset controlling unit, which is connected to the outer-loop power controller, receives gating information about the gated transmission of data in a frame at a predetermined rate, and generates an offset signal, which indicates an offset corresponding to a changed gating rate if the gating rate is changed.

    摘要翻译: 公开了一种用于在CDMA移动通信系统中在不连续传输(DTX)模式下仅发送功率控制位和无数据的物理信道上的连续外环功率控制的装置和方法。 在根据本发明的一个方面的功率控制装置中,帧错误检测器从预定长度的帧检测错误,并产生指示是否已经产生错误的错误信号。 闭环功率控制器将阈值与帧的多个周期中的每个功率控制组(PCG)中的信噪比(SNR)进行比较,并根据比较结果生成功率控制信息。 外环功率控制器增加阈值,以产生响应于指示帧错误存在的错误信号来命令功率增加的功率控制信息,并且减小阈值以便产生命令功率的功率控制信息 响应于指示不存在帧错误的错误信号减小。 连接到外环功率控制器的偏移控制单元以预定速率接收关于帧中的数据门控传输的门控信息,并且生成偏移信号,其指示对应于改变的门控速率的偏移量 选通率发生变化。

    Device and method for communicating power control signals in mobile communication system
    6.
    发明授权
    Device and method for communicating power control signals in mobile communication system 有权
    用于在移动通信系统中传送功率控制信号的装置和方法

    公开(公告)号:US06556554B1

    公开(公告)日:2003-04-29

    申请号:US09336252

    申请日:1999-06-18

    IPC分类号: H04B7216

    CPC分类号: H04W52/283 H04W52/58

    摘要: A power control device for a mobile communication system includes a base station transmitter and a mobile station receiver, wherein the base station transmitter includes: a plurality of PCB pattern generators for multiplying PCBs for a plurality of mobile stations by user patterns assigned to the respective mobile stations, to generate PCB patterns for the respective mobile stations, wherein the user patterns are orthogonal with one another; an adder for adding up the PCB patterns from the plural PCB pattern generators to generate a power control signal; and a transmitter for modulating the power control signal received from the adder and transmitting the modulated power control signal, wherein the mobile station receiver includes: a power control signal extractor for extracting the power control signal within a given interval of a reception signal received on a single code channel, wherein PCB patterns for a plurality of mobile stations are added to the power control signal; a PCB pattern generator for multiplying the power control signal by the user pattern assigned to the mobile station itself, to extract the PCB pattern of the mobile station; and a decider for generating PCBs in accordance with a signal level of the extracted PCB pattern.

    摘要翻译: 一种用于移动通信系统的功率控制装置,包括基站发射机和移动台接收机,其中基站发射机包括:多个PCB模式发生器,用于通过分配给相应移动台的用户模式来为多个移动站乘以PCB 站,以产生各个移动站的PCB模式,其中用户模式彼此正交; 加法器,用于将来自多个PCB图案发生器的PCB图案相加以产生功率控制信号; 以及发射机,用于对从加法器接收的功率控制信号进行调制并发送调制后的功率控制信号,其中移动站接收机包括:功率控制信号提取器,用于在给定的接收信号的给定间隔内提取功率控制信号, 单码通道,其中多个移动站的PCB模式被添加到功率控制信号; PCB模式发生器,用于将功率控制信号乘以分配给移动台本身的用户模式,以提取移动站的PCB模式; 以及用于根据所提取的PCB图案的信号电平产生PCB的决定器。

    Method and apparatus for link adaptation in a mobile communication system
    8.
    发明授权
    Method and apparatus for link adaptation in a mobile communication system 有权
    移动通信系统中链路自适应的方法和装置

    公开(公告)号:US06782271B2

    公开(公告)日:2004-08-24

    申请号:US09892803

    申请日:2001-06-27

    IPC分类号: H04B700

    摘要: Disclosed is a method for determining a forward data rate and a forward transmission power level in a mobile communication system. An access terminal measures a C/I of a forward pilot channel, determines a forward data rate by matching the measured C/I with a reference C/I, creates a difference between the measured C/I and the reference C/I as margin information, and transmits the determined forward data rate and margin information over a reverse transmission channel. Upon receipt of the forward data rate and margin information, an access network decreases a transmission power level by power corresponding to the margin information and performs forward transmission at the forward data rate at the decreased transmission power level.

    摘要翻译: 公开了一种用于确定移动通信系统中的前向数据速率和前向传输功率电平的方法。 接入终端测量前向导频信道的C / I,通过将测量的C / I与参考C / I匹配来确定正向数据速率,将测量的C / I和参考C / I之间的差作为余量 信息,并通过反向传输信道发送所确定的前向数据速率和边缘信息。 在接收到前向数据速率和边缘信息时,接入网络通过与边缘信息相对应的功率降低发送功率电平,并以降低的发送功率电平以正向数据速率进行前向发送。