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1. CN107211458 - Method and apparatus for random access preamble detection

Office
China
Application Number 201580075518.4
Application Date 06.02.2015
Publication Number 107211458
Publication Date 26.09.2017
Grant Number 107211458
Grant Date 29.01.2021
Publication Kind B
IPC
H04W 74/08
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
74Wireless channel access, e.g. scheduled or random access
08Non-scheduled access, e.g. random access, ALOHA or CSMA
H04L 1/00
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
1Arrangements for detecting or preventing errors in the information received
CPC
H04L 27/261
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
26Systems using multi-frequency codes
2601Multicarrier modulation systems
2602Signal structure
261Details of reference signals
H04L 27/2657
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
26Systems using multi-frequency codes
2601Multicarrier modulation systems
2647Arrangements specific to the receiver only
2655Synchronisation arrangements
2657Carrier synchronisation
H04W 74/0833
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
74Wireless channel access, e.g. scheduled or random access
08Non-scheduled ; or contention based; access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
0833using a random access procedure
H04L 27/26025
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
26Systems using multi-frequency codes
2601Multicarrier modulation systems
2602Signal structure
26025Numerology, i.e. varying one or more of symbol duration, subcarrier spacing, Fourier transform size, sampling rate or down-clocking
H04J 11/00
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
JMULTIPLEX COMMUNICATION
11Orthogonal multiplex systems, ; e.g. using WALSH codes
H04J 13/00
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
JMULTIPLEX COMMUNICATION
13Code division multiplex systems
Applicants ERICSSON TELEFON AB L M
瑞典爱立信有限公司
Inventors WANG JIANFENG
汪剑锋
SAHLIN HENRIK
H.萨林
ZHU HUAISONG
朱怀松
Agents 北京德琦知识产权代理有限公司 11018
北京德琦知识产权代理有限公司 11018
Title
(EN) Method and apparatus for random access preamble detection
(ZH) 用于随机接入前导码检测的方法和设备
Abstract
(EN) Embodiments of the present disclosure provide a method in a base station for random access preamble detection. The method comprises determining a frequency offset of a received uplink signal and adjusting the received uplink signal with the determined frequency offset. The method also comprises detecting, from the adjusted uplink signal, whether there is a random access preamble with a first false alarm value. Additionally, the method may further comprise detecting from the received uplink signal, whether there is a random access preamble with a second false alarm value, before determining the frequency offset of the received uplink signal. Determining the frequency offset of the received uplink signal may be performed in response that a random access preamble is detected with the second false alarm value, the second false alarm value being higher than the first false alarm value. Embodiments of the present disclosure also relate to a corresponding apparatus and a base station using the method.
(ZH) 本公开的实施例提供一种在基站中用于随机接入前导码检测的方法。该方法包括确定接收的上行链路信号的频率偏移,以及采用所确定的频率偏移对接收的上行链路信号进行调整。该方法还包括以第一假警报值从所调整的上行链路信号检测是否存在随机接入前导码。另外,该方法还可包括:在确定接收的上行链路信号的频率偏移之前,以第二假警报值从接收的上行链路信号检测是否存在随机接入前导码。可响应于以第二假警报值检测到随机接入前导码而执行对接收的上行链路信号的频率偏移的确定,第二假警报值高于第一假警报值。本公开的实施例还涉及利用该方法的对应设备和基站。