Title:
UPSTREAM ACCESS METHOD, APPARATUS AND BASE STATION IN LTE SYSTEM
Document Type and Number:
WIPO Patent Application WO/2017/107197
Kind Code:
A1
Abstract:
The embodiments of the present invention disclose an upstream access method in an LTE system, the method comprising: respectively receiving, by a base station, PRACHs of UEs from different coverages by using a multistage sampling window, wherein, the number of stages included in the multistage sampling window grows with a stepped increase of a maximum coverage radius of the base station. The base station determines timing advances (TA) of UEs that sent the PRACHs after making a PRACH detection on the PRACHs. The determine station determines the TA to the UE such that the UEs adjust upstream transmission time according to the TAs. The present invention makes a hierarchical sampling on UEs in different ranges of distance by using a multistage sampling window, and achieves upstream access of UEs whose distance from the base station is larger than 100km in the LTE system, such that the base station can support a greater coverage distance to reduce a network layout cost.
Inventors:
LU ZHIBING (CN)
HU JUN (CN)
ZHANG QINGLI (CN)
HU JUN (CN)
ZHANG QINGLI (CN)
Application Number:
PCT/CN2015/098981
Publication Date:
June 29, 2017
Filing Date:
December 25, 2015
Export Citation:
Assignee:
HYTERA COMM CORP LTD (CN)
International Classes:
H04W74/00
Foreign References:
| CN102656929A | 2012-09-05 | |||
| CN102724149A | 2012-10-10 | |||
| CN105657854A | 2016-06-08 | |||
| CN104640195A | 2015-05-20 | |||
| US20050030919A1 | 2005-02-10 |
Attorney, Agent or Firm:
SHENPAT INTELLECTUAL PROPERTY AGENCY (CN)
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