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    • 1. 发明申请
    • RANDOM ACCESS STRUCTURE FOR WIRELESS NETWORKS
    • 无线网络的随机访问结构
    • WO2007126793A3
    • 2008-01-03
    • PCT/US2007007535
    • 2007-03-27
    • TEXAS INSTRUMENTS INCBERTRAND PIERREJIANG JINGKANGUDE SHANTANUMUHAREMOVIC TARIK
    • BERTRAND PIERREJIANG JINGKANGUDE SHANTANUMUHAREMOVIC TARIK
    • H04L27/26
    • H04L27/2613H04L25/022
    • Apparatus and methods for accessing a wireless telecommunications network by transmitting a random access signal. The random access signal includes a random access preamble signal selected from a set of random access preamble signals constructed by cyclically shift selected root CAZAC sequences. The random access signal may be one or more transmission sub-frames in duration, the included random access preamble sequence's length being extended with the signal to provide improved signal detection performance in larger cells and in higher interference environments. The random access signal may include a wide-band pilot signal facilitating base station estimation of up-link frequency response in some situations. Each of the plurality of available random access preamble sequences may be assigned a unique information value. The base station may use the information encoded in the random access preamble to prioritize responses and resource allocations. Random access signal collisions are dealt with by a combination of preamble code space randomness and back-off procedures.
    • 通过发送随机接入信号来接入无线电信网络的装置和方法。 随机接入信号包括从由循环移位选择的根CAZAC序列构成的一组随机接入前同步信号中选择的随机接入前导信号。 随机接入信号可以是持续时间中的一个或多个传输子帧,所包含的随机接入前同步码序列的长度随信号扩展,以在较大的小区和较高的干扰环境中提供改善的信号检测性能。 随机接入信号可以包括宽带导频信号,有助于在某些情况下基站估计上行链路频率响应。 可以为多个可用随机接入前导码序列中的每一个分配唯一的信息值。 基站可以使用在随机接入前导码中编码的信息优先处理响应和资源分配。 随机接入信号冲突由前导码空间随机性和退避程序的组合来处理。
    • 4. 发明申请
    • SYSTEMS AND METHODS FOR AVOIDING AVALANCHE EFFECT IN COEXISTING WIRELESS NETWORKS
    • 用于避免无线网络中的AVALANCHE效应的系统和方法
    • WO2009021243A3
    • 2009-06-25
    • PCT/US2008072832
    • 2008-08-11
    • TEXAS INSTRUMENTS INCXHAFA ARITON ELU XIAOLINKANGUDE SHANTANU
    • XHAFA ARITON ELU XIAOLINKANGUDE SHANTANU
    • H04L12/28
    • H04W28/18H04W88/06
    • Systems and methods for avoiding access point transmission rate fall-back mechanism having an avalanche effect when acknowledgements are not received for packets sent during co-existence of WLAN and other wireless network technologies. A receiver (210, 300) comprises at least two dissimilar network technology subsystems (340). In some embodiments, a transmitter (220) transmits a handshake to the receiver prior to transmission of at least one data packet and does not reduce a transmission rate of future transmissions to the receiver if the transmitter does not receive a reply to the handshake. In other embodiments, the receiver is able to send an indicator to a transmitter requesting a protection mechanism be employed prior to transmission by the transmitter of at least one data packet. In further embodiments, the receiver is able to negotiate with the transmitter for the transmitter to employ a protection mechanism prior to transmission of at least one data packet to the receiver.
    • 用于在WLAN和其他无线网络技术的共存期间发送的分组没有接收到确认时,用于避免接入点传输速率下降机制具有雪崩效应的系统和方法。 接收机(210,300)包括至少两个不同的网络技术子系统(340)。 在一些实施例中,发射机(220)在发送至少一个数据分组之前向接收机发送握手,并且如果发射机没有接收到对握手的回复,则不会将未来传输的传输速率降低到接收机。 在其他实施例中,接收机能够向发射机发送请求保护机制的指示符,由发射机发送至少一个数据分组之前使用。 在另外的实施例中,接收机能够与发射机进行协商以使发射机在将至少一个数据分组传输到接收机之前采用保护机制。
    • 5. 发明专利
    • Random access structure for wireless network
    • 无线网络随机访问结构
    • JP2014057344A
    • 2014-03-27
    • JP2013229623
    • 2013-11-05
    • Texas Instruments Incテキサス インスツルメンツ インコーポレイテッド
    • PIERRE BERTRANDJING JIANGKANGUDE SHANTANUTARIK MUHAREMOVIC
    • H04J11/00H04J13/00H04W72/04H04W74/08
    • PROBLEM TO BE SOLVED: To solve such a problem that a random access channel is intended to encompass a wider range of functionalities than in previous or current cellular networks, thus an expected load is increased, so that a more efficient random access method is needed.SOLUTION: A random access signal comprises a random access preamble signal selected from a set of random access preamble signals constructed by cyclically shifting selected root CAZAC sequences. The random access signal has a length of one or more transmission sub-frames, the length of the included random access preamble sequence is extended with the signal to provide excellent signal detection performance in larger cells and in higher interference environments. The random access signal includes a wide-band pilot signal facilitating base station estimation of up-link frequency response in some situations.
    • 要解决的问题为了解决随机接入信道旨在包括比以前的或当前的蜂窝网络更广泛的功能范围的问题,因此期望的负载增加,从而需要更有效的随机接入方法。 解决方案:随机接入信号包括从通过循环移位所选根CAZAC序列构成的一组随机接入前导信号中选择的随机接入前导信号。 随机接入信号具有一个或多个传输子帧的长度,所包含的随机接入前同步码序列的长度随信号而扩展,以便在较大的小区和较高的干扰环境中提供优异的信号检测性能。 随机接入信号包括宽带导频信号,有助于在某些情况下基站估计上行链路频率响应。