H - Electricity – 04 – W
Patent
H - Electricity
04
W
H04W 36/08 (2009.01)
Patent
CA 2541777
A wireless communication method and apparatus for coordinating Node-Bs during handover for enhanced uplink (EU) transmission. In one embodiment, a radio network controller (RNC) initiates an inter-Node-B soft handover. A wireless transmit/receive unit (WTRU) establishes communication connections with a plurality of Node-Bs. A particular one of the Node-Bs is designated as being a primary Node-B, and each of other Node-Bs are designated as being a non- primary Node-B. The RNC informs all of the Node-Bs that the particular Node-B is a primary Node-B. The primary Node-B schedules EU transmission and performs ACK/NACK during soft handover. In another embodiment, the RNC initiates a hard handover for a WTRU connected to a source Node-B. The RNC sends an activation timer to the source Node-B to set the time for handover. As many previously negatively acknowledged (NACKed) data packets as possible are prioritized for retransmission in the source Node-B before the activation timer expires.
L'invention concerne un procédé et un appareil de communication sans fil de coordination de noeuds B au cours du transfert pour une transmission à liaison ascendante améliorée (EU). Dans un mode de réalisation, un contrôleur de réseau radio (RNC) initialise un transfert entre les noeuds B. Une unité d'émission/réception sans fil (WTRU) établit des connexions de communication avec une pluralité de noeuds B. Un noeud B particulier est désigné comme noeud B primaire, et chacun des autres noeuds B est désigné comme noeud B non primaire. Le RNC informe tous les noeuds B que le noeud B particulier est un noeud B primaire. Le noeud B primaire programme la transmission EU et exécute un processus ACK/NACK au cours du transfert. Dans un autre mode de réalisation, le RNC initialise un transfert pour une WTRU connectée à un noeud B source. Le RNC envoie un temporisateur d'activation au noeud B source pour établir l'heure du transfert. Autant de paquets de données auparavant reconnus négativement (NACKed) que possible sont prioritaires pour la retransmission dans le noeud B source avant expiration du temporisateur d'activation.
Dick Stephen G.
Miller James M.
Shin Sung-Hyuk
Terry Stephen E.
Zhang Guodong
Interdigital Technology Corporation
Ridout & Maybee Llp
LandOfFree
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