公开(公告)号：WO2007084840B1

公开(公告)日：2008-02-21

申请号：PCT/US2007060453

申请日：2007-01-12

Applicant: MOTOROLA INC ,  TAN JUN ,  GHOSH AMITAVA ,  RATASUK RAPEEPAT ,  WANG FAN ,  XIAO WEIMIN

Inventor： TAN JUN ,  GHOSH AMITAVA ,  RATASUK RAPEEPAT ,  WANG FAN ,  XIAO WEIMIN

IPC: H04B7/216

CPC classification number: H04L27/2613 ,  H04J13/004 ,  H04J13/102 ,  H04L5/0007 ,  H04L5/0021 ,  H04L5/0048 ,  H04L25/0228 ,  H04L27/2605 ,  H04L27/2655

Abstract: A system and method for initializing a system communication without previous reservations for random access channel (RACH) access includes a first step of defining at least one spread sequence derived from at least one constant amplitude zero autocorrelation sequence. A next step includes combining the spread sequence with a Walsh code to form an extended spread sequence. A next step includes using the extended spread sequence in a preamble for a RACH. A next step includes sending the preamble to a BTS for acquisition. A next step includes monitoring for a positive acquisition indicator from the BTS. A next step includes scheduling the sending of a RACH message. A next step includes sending the RACH message.

Abstract translation: 用于初始化系统通信而没有对随机接入信道（RACH）接入的先前保留的系统和方法包括定义从至少一个恒定幅度零自相关序列导出的至少一个扩展序列的第一步骤。 下一步包括将扩展序列与沃尔什码组合以形成扩展扩展序列。 下一步包括在RACH的前同步码中使用扩展扩展序列。 下一步包括将前导码发送到BTS进行采集。 下一步包括监测来自BTS的正采集指示符。 下一步包括调度RACH消息的发送。 下一步包括发送RACH消息。