Variable rate spread spectrum communication method and apparatus
    1.
    发明授权
    Variable rate spread spectrum communication method and apparatus 有权
    可变速率扩频通信方法及装置

    公开(公告)号:US06366601B1

    公开(公告)日:2002-04-02

    申请号:US09442367

    申请日:1999-11-17

    IPC分类号: H04L2730

    摘要: A communication system (100) provides selecting a first modulation-coding scheme (111) based on a quality indicator of a communication between a source user and a first destination user, determining a first possible number of data bits (201) that can be modulated and encoded according to selected modulation-coding scheme (111) and spread according to one spreading code of a plurality of spreading codes (108-1 through 108-k) which results in fitting in a predetermined time frame, determining a first number of data bits (102) to be transmitted from the source user to the first destination user, determining a first load level based on comparing first number of data bits (102) and first possible number of data bits (201), and, if the first load level is unequal to a whole number, rounding to a next first whole number, selecting a first number of plurality of spreading codes (108-1 through 108-k) based on the first whole number of load level for spread coding of first number of data bits (102) after being modulated and coded according to selected modulation-coding scheme (111).

    摘要翻译: 通信系统(100)提供基于源用户和第一目的用户之间的通信的质量指示符来选择第一调制编码方案(111),确定可调制的数据比特(201)的第一可能数量 并根据所选择的调制编码方案(111)进行编码,并根据多个扩展码(108-1至108-k)中的一个扩展码进行扩展,这导致在预定时间帧内拟合,确定第一数量的数据 要从源用户发送到第一目的用户的比特(102),基于比较第一数量比特(102)和第一可能数量的数据比特(201)来确定第一负载水平,以及如果第一负载 电平不等于整数,四舍五入到下一个第一整数,基于第一数量的扩展编码的第一整数负载电平来选择第一数量的扩展码(108-1至108-k) 数据位(1 02),根据选择的调制编码方案(111)进行调制编码。

    Variable rate spread spectrum communication method and apparatus
    2.
    发明授权
    Variable rate spread spectrum communication method and apparatus 有权
    多通道停止和等待ARQ通信方法和装置

    公开(公告)号:US06275488B1

    公开(公告)日:2001-08-14

    申请号:US09442250

    申请日:1999-11-17

    IPC分类号: H04B7212

    摘要: A method in a communication system (100) includes transmitting from a source user (101) a first data packet (111) over a first time frame (121) having a finite time period (131), transmitting from source user (101) a second data packet (112) over a second time frame (122) immediately subsequent to first time frame (121), detecting an acknowledgment of acceptable reception of data packet associated with either first or said second data packets (111 and 112), repeating transmission of first and second data packets (111 and 112) in a sequence of first and second time frames (121 and 122) in a time frame sequence (190) until the detection.

    摘要翻译: 通信系统(100)中的方法包括:通过具有有限时间段(131)的第一时间帧(121)从源用户(101)发送第一数据分组(111),从源用户(101)a 在第一时间帧(121)之后的第二时间帧(122)上的第二数据分组(112),检测与第一或所述第二数据分组(111和112)相关联的数据分组的可接受接收的确认,重复传输 在第一和第二时间帧(121和122)的序列中的时间序列(190)中的第一和第二数据分组(111和112)直到检测。

    Method and apparatus for selecting a communication data rate between mobile and base stations
    5.
    发明授权
    Method and apparatus for selecting a communication data rate between mobile and base stations 有权
    用于在移动台和基站之间选择通信数据速率的方法和装置

    公开(公告)号:US06253063B1

    公开(公告)日:2001-06-26

    申请号:US09490606

    申请日:2000-01-25

    IPC分类号: H04B100

    摘要: A mobile station (110) selects an initial data rate for communication between base station (107) and mobile station (110). Mobile station (110) communicates the selected initial data rate to base station (107) through uplink (112). Base station (107) determines a difference level of interference condition experienced by mobile station (107) between a time when the initial data rate was selected by mobile station (110) and a time when base station (107) prepares to communicate to mobile station (110). Base station (107) selects a final data rate for transmission from base station (107) to mobile station (110) based on the determined difference level of interference condition. As such, the initial data rate may be modified to the final data rate while maximizing the down link capacity.

    摘要翻译: 移动台(110)为基站(107)和移动台(110)之间的通信选择初始数据速率。 移动站(110)通过上行链路(112)将所选择的初始数据速率传送到基站(107)。 基站(107)确定移动台(110)在初始数据速率被移动台(110)选择的时间与基站(107)准备与移动台通信的时间之间的移动台(107)所经历的干扰状况的差异水平 (110)。 基站(107)基于所确定的干扰条件差异来选择用于从基站(107)到移动台(110)的传输的最终数据速率。 因此,可以将最初的数据速率修改为最终数据速率,同时最大化下行链路容量。

    Fading resistant multi-level QAM receiver
    8.
    发明授权
    Fading resistant multi-level QAM receiver 有权
    防褪色多级QAM接收机

    公开(公告)号:US06430214B1

    公开(公告)日:2002-08-06

    申请号:US09576367

    申请日:2000-05-22

    IPC分类号: H04L2730

    CPC分类号: A61F2/062 H04L27/38

    摘要: An architecture for simplified automatic gain control circuit (100, 200, 300) that is useable with M-ary QAM systems to improve overall link performance. The implementations particularly relating to modulating an M-ary QAM constellation according to a set of estimates derived from the pilot channel(s) and/or the traffic channels, modulating the M-ary QAM constellation according to the values of the pilot and traffic channel gains that are being sent to a mobile wireless device on a control channel, and using a power control bit at the mobile wireless device to modulate the M-ary QAM constellation, all resulting in improved receiver performance.

    摘要翻译: 用于简化自动增益控制电路(100,200,300)的架构,可用于M-ary QAM系统以改善整体链路性能。 具体涉及根据从导频信道和/或业务信道导出的一组估计来调制M元QAM星座的实现方式,根据导频和业务信道的值调制M元QAM星座图 正在发送到控制信道上的移动无线设备的增益,以及使用移动无线设备处的功率控制位来调制M元QAM星座,所有这些导致改善的接收机性能。

    Closed loop method for reverse link soft handoff hybrid automatic repeat request
    9.
    发明授权
    Closed loop method for reverse link soft handoff hybrid automatic repeat request 有权
    反向链路软切换混合自动重传请求的闭环方法

    公开(公告)号:US06678523B1

    公开(公告)日:2004-01-13

    申请号:US09705850

    申请日:2000-11-03

    IPC分类号: H04Q720

    摘要: A method of combining soft-handoff with a hybrid ARQ scheme to maximize throughput and gain in a communications system. After receiving a frame from the MS (110), the BTSs (104 and 106) will process the frame and communicate to the MS over a forward control channel whether the frame contained any errors. If all BTSs communicate that the frame contains errors, the MS will retransmit the same frame to all BTSs with a flush bit set to instruct the BTSs 104 and 106 to combine the retransmitted frame with the original frame. If only some BTSs communicate that the frame contains errors, the MS will transmit the next frame to all BTSs that successfully decoded the frame with the flush bit set to instruct the BTSs to erase the previous frame from memory and not to combine the previous frame with the current frame. The MS will retransmit the frame to the BTSs that did not successfully decode the frame with the flush bit set to instruct the BTSs to combine the previous frame with the retransmitted frame.

    摘要翻译: 一种将软切换与混合ARQ方案组合以最大化通信系统中的吞吐量和增益的方法。 在从MS(110)接收到帧之后,BTS(104和106)将处理该帧并且通过前向控制信道与MS通信该帧是否包含任何错误。 如果所有的BTS都通信帧包含错误,则MS将重新发送相同的帧到所有的BTS,其中设置一个刷新比特,以指示BTS 104和106将重发帧与原始帧组合。 如果只有一些BTS通信帧包含错误,则MS将向成功解码帧的所有BTS发送下一帧,该闪存位被设置为指示BTS从存储器擦除先前帧,而不将前一帧与 当前框架。 MS将重新发送帧到没有成功解码帧的BTS,其中设置了刷新比特,以指示BTS将前一帧与重发帧组合。