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    • 82. 发明申请
    • Apparatus and method for efficiently supporting VoIP in a wireless communication system
    • 在无线通信系统中有效支持VoIP的装置和方法
    • US20060034340A1
    • 2006-02-16
    • US10918542
    • 2004-08-12
    • Zhigang RongLin MaSteven GreerZhigang LiuZhouyue Pi
    • Zhigang RongLin MaSteven GreerZhigang LiuZhouyue Pi
    • H04J3/10
    • H04L65/1069H04L29/06027H04L65/80H04W28/06H04W80/00
    • The present invention concerns methods for efficiently supporting Voice over Internet Protocol (VoIP) on the Forward Packet Data Channel (F-PDCH) in CDMA 2000 1xEV-DV systems. Active speech in VoIP is encoded using, for example enhanced variable rate codec (EVRC), which produces 171, 80 and 16 bits per 20 ms of speech for Rate 1, Rate 1/2 and Rate 1/8, respectively. However, about 60% of the time a user is inactive during a speech session, so an inordinate amount of system bandwidth is comprised of rate 1/8 VoIP packets. In one embodiment of the present invention the apparatus of the present invention identifies the Rate 1/8 voice frame packets and discards them. In another embodiment of the present invention, the apparatus of the present invention identifies the Rate 1/8 voice frame packets and selects some of them for further transmission. In both embodiments the efficiency of channel utilization is increased since the amount of channel band width used to communicate relatively little information, e.g., gaps of silence, is decreased.
    • 本发明涉及在CDMA 2000 1xEV-DV系统中有效支持前向分组数据信道(F-PDCH)上的因特网协议语音(VoIP)的方法。 VoIP中的活动语音使用例如增强型可变速率编解码器(EVRC)进行编码,其分别为速率1,速率1/2和速率1/8的每20毫秒的语音产生171,80和16比特。 然而,在用户在语音会话期间不活动的时间的大约60%,因此系统带宽的过多是由速率1/8的VoIP分组组成的。 在本发明的一个实施例中,本发明的装置识别速率1/8语音帧分组并丢弃它们。 在本发明的另一实施例中,本发明的装置识别速率1/8的语音帧分组,并选择其中的一些进一步传输。 在两个实施例中,信道利用的效率增加,因为用于传达相对较少的信息的信道带宽的量,例如,沉默的间隙被减少。
    • 83. 发明授权
    • Methods and apparatus for mapping control channels to resources in OFDM systems
    • 将控制信道映射到OFDM系统中的资源的方法和装置
    • US09131465B2
    • 2015-09-08
    • US11979829
    • 2007-11-08
    • Zhouyue Pi
    • Zhouyue Pi
    • H04K1/10H04L27/28H04W72/00H04B7/04H04B7/06H04L5/00
    • H04W72/00H04B7/0417H04B7/0452H04B7/0632H04B7/0634H04L5/0032
    • A method for data transmission. The method including the steps of generating at least one resource tree, mapping a plurality of resource elements into respective leaf nodes in the at least one resource tree according to a certain mapping scheme, with each node in the at least one resource tree representing a resource allocation scheme for data transmission, and transmitting data using a resource allocation scheme selected from among the plurality of resource allocation schemes represented by respective nodes in the at least one resource tree. In response to reception of the data, a receiver decodes the data by recursively applying the plurality of resource allocation schemes represented by respective nodes in the at least one resource tree until the data is decoded.
    • 一种数据传输方法。 该方法包括以下步骤:生成至少一个资源树,根据特定的映射方案将多个资源元素映射到所述至少一个资源树中的各个叶节点中,所述至少一个资源树中的每个节点表示资源 用于数据传输的分配方案,以及使用从所述至少一个资源树中的相应节点表示的所述多个资源分配方案中选择的资源分配方案来发送数据。 响应于数据的接收,接收机通过递归地应用由至少一个资源树中的相应节点表示的多个资源分配方案来解码数据,直到数据被解码。
    • 86. 发明授权
    • System and method for efficient enhanced multicast broadcast system (E-MBS) map decoding
    • 用于高效增强组播广播系统(E-MBS)映射解码的系统和方法
    • US08717982B2
    • 2014-05-06
    • US12590276
    • 2009-11-04
    • Kaushik JosiamZhouyue Pi
    • Kaushik JosiamZhouyue Pi
    • H04W72/04
    • H04W72/005
    • A wireless communication network is provided. The network comprising a plurality of base stations capable of wireless communication with a plurality of subscriber stations within a coverage area of the network. At least one of the plurality of base stations comprises a transmitter configured to transmit a downlink frame. The downlink frame comprising a first Enhanced Multicast Broadcast Service (E-MBS) MAP. The first E-MBS MAP comprises a field with an indicator to indicate a next E-MBS MAP to be decoded by a subscriber station. The subscriber station, upon decoding the first E-MBS MAP, refrains from decoding subsequent E-MBS MAPS that precede the next E-MBS MAP to be decoded by the subscriber station in accordance with the indicator.
    • 提供无线通信网络。 该网络包括能够与网络的覆盖区域内的多个用户站进行无线通信的多个基站。 多个基站中的至少一个基站包括被配置为发送下行链路帧的发射机。 所述下行链路帧包括第一增强型多播广播服务(E-MBS)MAP。 第一E-MBS MAP包括具有指示符以指示要由用户站解码的下一个E-MBS MAP的字段。 用户站在对第一E-MBS MAP进行解码时,拒绝解码在下一个E-MBS MAP之前的后续E-MBS MAPS,以由用户站根据指示符进行解码。
    • 87. 发明授权
    • Method and apparatus for coordinating hopping of resources in wireless communication systems
    • 用于协调无线通信系统中的资源跳频的方法和装置
    • US08711783B2
    • 2014-04-29
    • US11756024
    • 2007-05-31
    • Zhouyue Pi
    • Zhouyue Pi
    • H04W4/00
    • H04L5/0053H04L5/0012H04W88/08
    • A method and apparatus for coordinating the resource assignment of a plurality of channel segments in a wireless communication system are disclosed. The method includes the steps of determining a number of resources available, determining a number of channel segments to include in a frame, determining a number of resource zones to be used for resource assignment of the plurality of channel segments, assigning each channel segment of the number of channel segments to a resource zone of the number of resource zones, and selecting a resource from the number of resources for transmitting said each channel segment in said resource zone.
    • 公开了一种用于协调无线通信系统中的多个信道段的资源分配的方法和装置。 该方法包括以下步骤:确定可用资源的数量,确定要在帧中包括的信道段的数量,确定要用于多个信道段的资源分配的资源区域的数量,分配每个信道段的 信道数目数目到资源区域的资源区域,以及从资源数量中选择资源,用于在所述资源区域中发送所述每个信道段。
    • 88. 发明授权
    • Techniques for cyclic redundancy check encoding in communication system
    • 通信系统中循环冗余校验编码技术
    • US08627171B2
    • 2014-01-07
    • US13096754
    • 2011-04-28
    • Zhouyue Pi
    • Zhouyue Pi
    • H03M13/00H04N7/12G06F11/00
    • H03M13/091H03M13/09H03M13/2906H03M13/6525H03M13/6544H04L1/0041H04L1/0061
    • A method and apparatus for generating a Cyclic Redundancy Check (CRC) encoded message in a communication system are provided. The method includes generating the message, generating a first CRC for the message, generating a second CRC for the message, scrambling the first CRC by a first bit sequence of the message, and scrambling the second CRC by a second bit sequence of the message. The apparatus includes a message generator, a first CRC encoder, and a second CRC encoder. The message generator generates a message. The first CRC encoder generates a first CRC for the message, and scrambles the first CRC by a first bit sequence of the message. The second CRC encoder generates a second CRC for the message, and scrambles the second CRC by a second bit sequence of the message.
    • 提供了一种用于在通信系统中生成循环冗余校验(CRC)编码消息的方法和装置。 该方法包括生成该消息,产生该消息的第一个CRC,为消息生成第二个CRC,通过该消息的第一个比特序列对该第一个CRC进行加扰,以及通过该消息的第二个比特序列对该第二个CRC进行加扰。 该装置包括消息发生器,第一CRC编码器和第二CRC编码器。 消息生成器生成消息。 第一CRC编码器生成消息的第一个CRC,并且通过消息的第一个比特序列对第一个CRC进行加扰。 第二CRC编码器生成消息的第二CRC,并且通过消息的第二比特序列对第二CRC进行加扰。