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    Method of controlling initial power ramp-up in CDMA systems by using short codes
    241.
    发明授权
    Method of controlling initial power ramp-up in CDMA systems by using short codes 失效
    通过使用短码来控制CDMA系统初始功率提升的方法

    公开(公告)号：US06181949B2

    公开(公告)日：2001-01-30

    申请号：US09003104

    申请日：1998-01-06

    Applicant: Fatih M. Ozluturk ,  Gary R. Lomp

    Inventor： Fatih M. Ozluturk ,  Gary R. Lomp

    IPC: H04B700

    CPC classification number: H04W52/36 ,  H04B1/707 ,  H04B1/7075 ,  H04B1/70753 ,  H04B1/70755 ,  H04B1/70758 ,  H04B1/7077 ,  H04B1/708 ,  H04B7/2628 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04B2201/70703 ,  H04B2201/7071 ,  H04W52/367 ,  H04W52/50 ,  H04W52/60

    Abstract: A system and method of controlling transmission power during the establishment of a channel in a CDMA communication system utilize the transmission of a short code from a subscriber unit to a base station during initial power ramp-up. The short code is a sequence for detection by the base station which has a much shorter period than a conventional spreading code. The ramp-up starts from a power level that is guaranteed to be lower than the required power level for detection by the base station. The subscriber unit quickly increases transmission power while repeatedly transmitting the short code until the signal is detected by the base station. Once the base station detects the short code, it sends an indication to the subscriber unit to cease increasing transmission power. The use of short codes limits power overshoot and interference to other subscriber stations and permits the base station to quickly synchronize to the spreading code used by the subscriber unit.

    Abstract translation: 在CDMA通信系统建立信道期间控制发射功率的系统和方法利用在初始功率提升期间从用户单元向基站传输短码。 短码是用于基站检测的序列，其具有比常规扩展码短得多的周期。 斜坡上升从功率电平开始，该功率电平保证低于基站检测所需的功率电平。 用户单元快速增加发射功率，同时重复发送短码直到基站检测到信号。 一旦基站检测到短码，它就向用户单元发送指示，以停止增加发射功率。 使用短码限制了对其他用户站的功率过冲和干扰，并允许基站快速同步到用户单元使用的扩展码。

    Multi-user acquisition procedure for multipoint-to-point synchronous CDMA systems
    242.
    发明授权
    Multi-user acquisition procedure for multipoint-to-point synchronous CDMA systems 失效
    多点对点同步CDMA系统的多用户采集程序

    公开(公告)号：US5825835A

    公开(公告)日：1998-10-20

    申请号：US606285

    申请日：1996-02-23

    Applicant: Samuel C. Kingston ,  Thomas R. Giallorenzi ,  Robert William Steagall ,  David Matolak

    Inventor： Samuel C. Kingston ,  Thomas R. Giallorenzi ,  Robert William Steagall ,  David Matolak

    IPC: H04B1/7077 ,  H04B1/7103 ,  H04B7/26 ,  H04L7/00

    CPC classification number: H04B1/7077 ,  H04B1/7103 ,  H04B2201/7071 ,  H04B2201/709709 ,  H04W92/10

    Abstract: Disclosed are methods and apparatus for use in a synchronous CDMA communications system (10) that employs orthogonal pn spreading codes. The methods are intended for synchronizing transmissions from a subscriber unit (SU 14) to a radio base unit (RBU 12), and include the steps of: (a) transmitting individual ones of a plurality of bursts from the SU to the RBU, each burst being transmitted with a different pn spreading code timing alignment; (b) receiving individual ones of the plurality of bursts with the RBU and determining a power estimate of each received burst; and (c) in response to a determined power estimate of one of the bursts exceeding a threshold, sending a message from the RBU to the SU. The message indicates that the SU is to use for subsequent transmissions the pn spreading code timing alignment that was employed when transmitting the burst that exceeded the threshold. In a preferred embodiment of this invention the step of transmitting transmits an indication of the pn spreading code timing alignment used when transmitting a given one of the bursts. Each burst is transmitted with a pn spreading code timing alignment that differs by 1/2 chip from a previous pn spreading code timing alignment.

    Abstract translation: 公开了在采用正交pn扩展码的同步CDMA通信系统（10）中使用的方法和装置。 这些方法用于同步来自用户单元（SU 14）到无线电基站单元（RBU 12）的传输，并且包括以下步骤：（a）将多个突发中的各个从SU发送到RBU，每个突发 以不同的pn扩频码定时对准发送突发; （b）用所述RBU接收所述多个突发中的各个突发并确定每个接收的突发的功率估计; 和（c）响应于超过阈值的突发之一的确定功率估计，将消息从RBU发送到SU。 消息指示SU用于后续传输，当发送超过阈值的突发时采用的pn扩展码定时对准。 在本发明的优选实施例中，发射步骤在发送给定的一个突发时发送使用的pn扩展码定时对准的指示。 每个脉冲串以从先前的pn扩展码定时对准不同的+ n，f 1/2 + EE码元的pn扩展码定时对准来发送。

    Base station receiver equipment
    247.
    发明授权
    Base station receiver equipment 失效
    基站接收设备

    公开(公告)号：US5684793A

    公开(公告)日：1997-11-04

    申请号：US564197

    申请日：1996-03-22

    Applicant: Arto Kiema ,  Ilkka Keskitalo ,  Petri Jolma ,  Jari Savusalo

    Inventor： Arto Kiema ,  Ilkka Keskitalo ,  Petri Jolma ,  Jari Savusalo

    IPC: H04B7/08 ,  H04B1/707 ,  H04B7/02 ,  H04B7/26 ,  H04W24/00 ,  H04W88/08 ,  H04B7/216

    CPC classification number: H04B1/7115 ,  H04B1/709 ,  H04B1/7117 ,  H04B2201/7071 ,  H04W24/00 ,  H04W88/08

    Abstract: A rake-type CDMA base station receiver equipment, including a plurality of correlators each having a received signal as its input, a plurality of diversity combiners for respective receiver branches, and a measurer for measuring the quality of the received signal. To reduce the number of correlators and diversity combiners, the receiver equipment further includes switches for switching the correlators to the different combiners, and controllers for controlling the switches on the basis of data sent from the measurer for measuring the quality of the received signal or on the basis of the capacity loading of the base station receiver equipment.

    Abstract translation: PCT No.PCT / FI94 / 00239 Sec。 371日期：1996年3月22日 102（e）1996年3月22日PCT 1994年6月6日PCT公布。 第WO94 / 30025号公报 日期1994年12月22日耙式CDMA基站接收机设备，包括各自具有接收信号作为其输入的多个相关器，用于各个接收器分支的多个分集组合器，以及用于测量接收信号质量的测量器 。 为了减少相关器和分集组合器的数量，接收机设备还包括用于将相关器切换到不同组合器的开关，以及用于根据测量器发送的数据控制开关的控制器，用于测量接收信号的质量或开 基站接收设备容量负载的基础。

    System and method for scalable digital communications with adaptive system parameters
    248.
    发明授权
    System and method for scalable digital communications with adaptive system parameters 有权
    具有自适应系统参数的可扩展数字通信的系统和方法

    公开(公告)号：US09356748B2

    公开(公告)日：2016-05-31

    申请号：US14453875

    申请日：2014-08-07

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Hosein Nikopour ,  Jianglei Ma ,  Peiying Zhu

    IPC: H04B7/216 ,  H04L5/00 ,  H04J13/16 ,  H04B1/707 ,  H04J11/00

    CPC classification number: H04W72/042 ,  H04B1/69 ,  H04B1/707 ,  H04B7/2628 ,  H04B2201/7071 ,  H04J11/00 ,  H04J13/16 ,  H04L5/0007 ,  H04L5/003 ,  H04L5/0044 ,  H04W72/048

    Abstract: A method for operating an adapting device includes selecting a first access mode out of a plurality of access modes for a first transmission between a first communications device and a second communications device, wherein the selection of the first access mode is made in accordance with an access mode criterion, and at least one of communications system information, and user equipment information, and determining sparse code multiple access (SCMA) parameters from the first access mode in accordance with a SCMA parameter mapping rule. The method also includes providing information about the first access mode to at least one of the first communications device and the second communications device.

    Abstract translation: 一种用于操作适配设备的方法包括从第一通信设备和第二通信设备之间的第一传输中选择用于多个接入模式的第一接入模式，其中，根据接入进行第一接入模式的选择 模式标准，以及通信系统信息和用户设备信息中的至少一个，以及根据SCMA参数映射规则从第一接入模式确定稀疏码多址（SCMA）参数。 该方法还包括向第一通信设备和第二通信设备中的至少一个提供关于第一接入模式的信息。

    Hybrid automatic repeat request with feedback dependent BIT selection
    250.
    发明授权
    Hybrid automatic repeat request with feedback dependent BIT selection 有权
    具有反馈相关BIT选择的混合自动重复请求

    公开(公告)号：US09130748B2

    公开(公告)日：2015-09-08

    申请号：US13405250

    申请日：2012-02-25

    Applicant: Chunlong Bai ,  Bo Göransson

    Inventor： Chunlong Bai ,  Bo Göransson

    IPC: H04L1/00 ,  H04L1/16 ,  H04L1/18

    CPC classification number: H04W72/082 ,  H04B1/7103 ,  H04B2201/7071 ,  H04B2201/709709 ,  H04L1/0026 ,  H04L1/0057 ,  H04L1/0068 ,  H04L1/1671 ,  H04L1/1819 ,  H04L1/1861 ,  H04L1/1864 ,  H04L1/1893 ,  H04L5/0053

    Abstract: A multi-bit HARQ feedback is transmitted by a receiver to a transmitter. The multi-bit feedback is a function of a level of convergence reached by a decoder when the previously transmitted coded data bits bit were decoded. The transmitter is configured to select a set of coded data bits for a retransmission as a function of the multi-bit feedback. In some embodiments, different redundancy versions of the coded data bits may be selected as a function of the multi-bit feedback. In other embodiments, a bit puncturing or bit repetition pattern may be selected as a function of the multi-bit feedback.

    Abstract translation: 多位HARQ反馈由接收机发送到发射机。 当先前发送的编码数据位位被解码时，多比特反馈是解码器达到的收敛水平的函数。 发射器被配置为根据多位反馈来选择用于重传的一组编码数据位。 在一些实施例中，编码数据位的不同冗余版本可以被选择为多位反馈的函数。 在其他实施例中，可以选择位打孔或位重复模式作为多位反馈的函数。

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