一种随机接入前导序列的生成方法及用户设备技术

一种随机接入前导序列的生成方法及用户设备，方法包括如下步骤：在UE接收到基站发送的第一通知信令的情况下，确定使用第一方案计算循环移位值；获取第一逻辑根序列号，并根据第一逻辑根序列号确定根序列；根据根序列和循环移位值，生成随机接入前导序列；第一方案为在UE的多普勒频移小于第一预定值且大于第二预定值的情况下计算循环移位值的方案，第一预定值小于2倍的物理随机接入信道PRACH子载波间隔；第二预定值大于1倍的PRACH子载波间隔；第一预定值大于第二预定值。采用本发明专利技术，能够在UE的多普勒频移大于1倍的PRACH的子载波间隔且小于2倍的PRACH的子载波间隔的情况下，消除UE之间的相互干扰，解决基站检测随机接入序列时出现检测模糊的问题。

A Method of Generating Random Access Leader Sequence and User Equipment

A method for generating random access preamble sequence and user equipment includes the following steps: in the case that UE receives the first notification signal sent by base station, the first scheme is used to calculate the cyclic shift value; the first logical root sequence number is obtained and the root sequence is determined according to the first logical root sequence number; and the random access preamble is generated according to the root sequence and cyclic shift value. Column: The first scheme is to calculate the cyclic shift value when the Doppler shift of UE is less than the first predetermined value and greater than the second predetermined value. The first predetermined value is less than two times the PRACH subcarrier interval of physical random access channel; the second predetermined value is more than one times the PRACH subcarrier interval; and the first predetermined value is greater than the second predetermined value. The invention can eliminate the mutual interference between UEs when the Doppler shift of UE is greater than 1 times of PRACH's subcarrier interval and less than 2 times of PRACH's subcarrier interval, and solve the problem of detection ambiguity when the base station detects random access sequence.

【技术实现步骤摘要】
【国外来华专利技术】PCT国内申请，说明书已公开。

【技术保护点】
PCT国内申请，权利要求书已公开。

【技术特征摘要】
【国外来华专利技术】PCT国内申请，...

【专利技术属性】
技术研发人员：赵越，柴丽，郭志恒，程型清，
申请(专利权)人：华为技术有限公司，
类型：发明
国别省市：广东,44