Title:
LTEシステムにおける改善したタイミング調整
Document Type and Number:
Japanese Patent JP4870838
Kind Code:
B2
Abstract:
A method (500) for use in a user terminal (120, 130) in a cellular communications system (100). According to the method, the user terminal applies a first timing advance value (505) to its transmissions to a controlling node (140), and the user terminal (120, 130) requests communication with the controlling node (140) in a contention based procedure by transmitting an access request (MSG 1), in response (515) to which the controlling node transmits an initiation message (MSG 2) along with (520) a second timing advance value. According to the method (500), the user terminal (120, 130) uses (530) the first timing advance value if the user terminal loses the contention based procedure, i.e. if the controlling node subsequently continues the initiated communication with said other user terminal.
Inventors:
Tinderfeld, Tobias
Lindström, Magnus
Lindström, Magnus
Application Number:
JP2010531989A
Publication Date:
February 08, 2012
Filing Date:
June 09, 2008
Export Citation:
Assignee:
Telefon Akti Bora Get Elm Ericson (Pubble)
International Classes:
H04W56/00; H04W72/04
Domestic Patent References:
| JPH1175235A | 1999-03-16 | |||
| JP2000152341A | 2000-05-30 |
Foreign References:
| WO2007073040A1 | 2007-06-28 |
Attorney, Agent or Firm:
Yasunori Otsuka
Shiro Takayanagi
Yasuhiro Otsuka
Shuji Kimura
Osamu Shimoyama
Shiro Takayanagi
Yasuhiro Otsuka
Shuji Kimura
Osamu Shimoyama