Title:
UPLINK DATA TRANSMISSION METHOD AND APPARATUS
Document Type and Number:
WIPO Patent Application WO/2018/024078
Kind Code:
A1
Abstract:
The present application provides an uplink data transmission method and a user terminal (UE) for executing the method. The method in the present application comprises: A, generating a first random number; B, determining, according to the generated first random number, whether to initiate a random access process; if the random access process is initiated, obtaining a timing advance (TA) value from a base station by means of the random access process; and if the random access process is not initiated, listening for a TA message broadcast by another UE and obtaining a TA value from the TA message; C, transmitting uplink data according to the obtained TA value; D, if the uplink data is successfully transmitted, continuing to perform E, and if the uplink data is unsuccessfully transmitted, returning to A; and E, generating a TA message according to the obtained TA value, and broadcasting the generated TA message. By means of the method in the present application, the time delay and the power consumption can be reduced.
Inventors:
YE NENG (CN)
LI XIANGMING (CN)
LI ANXIN (CN)
CHEN XIAOHANG (CN)
ZHAO QUN (CN)
JIANG HUILING (CN)
LI XIANGMING (CN)
LI ANXIN (CN)
CHEN XIAOHANG (CN)
ZHAO QUN (CN)
JIANG HUILING (CN)
Application Number:
PCT/CN2017/092152
Publication Date:
February 08, 2018
Filing Date:
July 07, 2017
Export Citation:
Assignee:
NTT DOCOMO INC (JP)
International Classes:
H04L45/122; H04W56/00
Foreign References:
| CN103491622A | 2014-01-01 | |||
| CN102165840A | 2011-08-24 | |||
| CN105453627A | 2016-03-30 | |||
| CN101646234A | 2010-02-10 | |||
| EP2408253A1 | 2012-01-18 |
Other References:
See also references of EP 3496474A4
Attorney, Agent or Firm:
DEQI INTELLECTUAL PROPERTY LAW CORPORATION (CN)
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