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1. US20120218987 - Method, system and device for uplink synchronization

Office États-Unis d'Amérique
Numéro de la demande 13501062
Date de la demande 30.09.2010
Numéro de publication 20120218987
Date de publication 30.08.2012
Numéro de délivrance 08811433
Date de délivrance 19.08.2014
Type de publication B2
CIB
H04J 3/06
HÉLECTRICITÉ
04TECHNIQUE DE LA COMMUNICATION ÉLECTRIQUE
JCOMMUNICATION MULTIPLEX
3Systèmes multiplex à division de temps
02Détails
06Dispositions de synchronisation
H04L 27/26
HÉLECTRICITÉ
04TECHNIQUE DE LA COMMUNICATION ÉLECTRIQUE
LTRANSMISSION D'INFORMATION NUMÉRIQUE, p.ex. COMMUNICATION TÉLÉGRAPHIQUE
27Systèmes à porteuse modulée
26Systèmes utilisant des codes à fréquences multiples
H04L 7/00
HÉLECTRICITÉ
04TECHNIQUE DE LA COMMUNICATION ÉLECTRIQUE
LTRANSMISSION D'INFORMATION NUMÉRIQUE, p.ex. COMMUNICATION TÉLÉGRAPHIQUE
7Dispositions pour synchroniser le récepteur avec l'émetteur
H04W 56/00
HÉLECTRICITÉ
04TECHNIQUE DE LA COMMUNICATION ÉLECTRIQUE
WRÉSEAUX DE TÉLÉCOMMUNICATIONS SANS FIL
56Dispositions de synchronisation
CPC
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
2655Synchronisation arrangements
2657Carrier synchronisation
H04L 7/0083
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
7Arrangements for synchronising receiver with transmitter
0079Receiver details
0083taking measures against momentary loss of synchronisation, e.g. inhibiting the synchronisation, using idle words or using redundant clocks
H04W 56/00
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
56Synchronisation arrangements
H04W 56/0005
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
56Synchronisation arrangements
0005synchronizing of arrival of multiple uplinks
H04W 56/0045
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
56Synchronisation arrangements
004compensating for timing error of reception due to propagation delay
0045compensating for timing error by altering transmission time
H04W 92/10
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
92Interfaces specially adapted for wireless communication networks
04Interfaces between hierarchically different network devices
10between terminal device and access point, i.e. wireless air interface
Déposants Zhao Yali
China Academy of Telecommunications Technology
Xu Fangli
Qin Fei
Li Guoqing
Inventeurs Zhao Yali
Xu Fangli
Qin Fei
Li Guoqing
Mandataires Foley & Lardner LLP
Ewing James F.
Pua Paul M. H.
Données relatives à la priorité 2009 1 0235660 10.10.2009 CN
Titre
(EN) Method, system and device for uplink synchronization
Abrégé
(EN)

A method for uplink synchronization in a multi-carrier system includes the following steps: a base station selects one or more first component carriers, which do not establish the uplink synchronization with the base station, from multiple component carriers supported by a terminal; then the base station obtains Timing Advance (TA) needed by the terminal to perform the uplink transmission on the first component carriers, and sends the TA information to the terminal; the terminal performs the uplink transmission on said first component carriers according to said TA. The application of the present invention enables the establishment of uplink synchronization between the base station and the user equipment in multi-carrier system.

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