会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 6. 发明申请
    • METHOD AND APPARATUS FOR PERFORMING RANDOM ACCESS IN A WIRELESS COMMUNICATION SYSTEM
    • 在无线通信系统中执行随机访问的方法和装置
    • US20070291696A1
    • 2007-12-20
    • US11763862
    • 2007-06-15
    • Guodong ZhangKyle PanAllan Tsai
    • Guodong ZhangKyle PanAllan Tsai
    • H04Q7/00
    • H04L27/2613H04J3/0602H04L5/023H04L27/2662
    • A method and apparatus for random access in an evolved universal terrestrial radio access (E-UTRA) system are disclosed. For code division multiplexing (CDM), a basic preamble is generated using a constant amplitude zero auto-correlation (CAZAC) sequence. The basic preamble is repeated for M time for generating a random access channel (RACH) preamble. For time division multiplexing/frequency division multiplexing (TDM/FDM), an extended CAZAC sequence is used to generate the basic preamble. Alternatively, a hybrid RACH access period including at least one CDM random access slot and at least one TDM/FDM random access slot may be provided. For synchronized random access, a RACH burst including a preamble part, a message part, and two cyclic prefixes may be generated and transmitted
    • 公开了一种在演进的通用陆地无线电接入(E-UTRA)系统中随机接入的方法和装置。 对于码分复用(CDM),使用恒幅零自相关(CAZAC)序列生成基本前同步码。 为了生成随机接入信道(RACH)前导码,M个时间重复基本前同步码。 对于时分复用/频分复用(TDM / FDM),使用扩展CAZAC序列来生成基本前同步码。 或者,可以提供包括至少一个CDM随机接入时隙和至少一个TDM / FDM随机接入时隙的混合RACH接入时段。 对于同步随机接入,可以生成并发送包括前导码部分,消息部分和两个循环前缀的RACH脉冲串