EP 2208290 A4 20131204 - RANDOM ACCESS PREAMBLE COLLISION DETECTION
Title (en)
RANDOM ACCESS PREAMBLE COLLISION DETECTION
Title (de)
DIREKTZUGRIFFS-PRÄAMBEL-VERDECKUNGSDETEKTION
Title (fr)
DÉTECTION DE LA COLLISION DE PRÉAMBULES D'ACCÈS DIRECT
Publication
Application
Priority
- SE 2008050647 W 20080602
- US 98533507 P 20071105
Abstract (en)
[origin: WO2009061255A1] A method (500) for a user terminal (120, 130) in a cellular system (100). The user terminal (120, 130) applies (505) a timing advance to transmissions to a controlling node (140). The user terminal (120, 130) requests (510) communication with the controlling node (140) by a special message (MSG 1), in response to which the user terminal (120, 130) receives (515) a message (MSG 2) which includes an updated value for the timing advance. The user terminal (120, 130) compares (520) the updated value with the value of the timing advance that the user terminal had prior to the reception of said response message. If the difference (?) between the prior value and the updated value is greater than a first predetermined threshold (T1) or below a second predetermined threshold (T2), the user terminal (120, 130) ignores (525) the response message (MSG 2) and renews its request for communication.
IPC 8 full level
H04W 56/00 (2009.01); H04W 74/08 (2009.01)
CPC (source: EP)
H04W 56/0045 (2013.01); H04W 74/0858 (2013.01)
Citation (search report)
- [Y] DE 202006019286 U1 20070516 - INTERDIGITAL TECH CORP [US]
- [Y] US 7146135 B2 20061205 - AGIN PASCAL [FR]
- [A] US 6470057 B1 20021022 - HUI LIU [US], et al
- See references of WO 2009061255A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2009061255 A1 20090514; EP 2208290 A1 20100721; EP 2208290 A4 20131204; JP 2011503959 A 20110127; JP 5091328 B2 20121205
DOCDB simple family (application)
SE 2008050647 W 20080602; EP 08779329 A 20080602; JP 2010531988 A 20080602