Title:
移動体通信システムにおけるダウンリンクRRCメッセージと移動機のセル間移動との競合救済方法
Document Type and Number:
Japanese Patent JP4577505
Kind Code:
B2
Abstract:
A method of relieving competition between a Down-Link RRC message and inter-cell movement of user equipment allows communication to continue even when acknowledgment of the Down-Link RRC message cannot be performed. A Radio Link Control (RLC) portion of the RNC divides a Down-Link (DL) RRC message into Acknowledge Mode (AM) units and transmits those units, and sends a RLC error notice when a limit on the number of resends of the AM units is exceeded due to an acknowledged (ACK) message from the UE not having been received. A Radio Resource Control (RRC) portion of the RNC: receives the RLC error notice; activates a timer; and, determines if an updating message is received from the UE within a fixed period. If the updating message is received within the fixed period, the RRC portion of the RNC: treats the RLC error notice as resulting from competition with inter-cell movement of the UE to reset the RLC portion of the RNC, and resets a RLC portion of the UE.
Inventors:
Masahiko Kojima
Application Number:
JP2005102804A
Publication Date:
November 10, 2010
Filing Date:
March 31, 2005
Export Citation:
Assignee:
NEC
International Classes:
H04W36/00; H04W28/04; H04W36/08; H04W72/04; H04W88/12
Domestic Patent References:
| JP2004159297A | ||||
| JP4018896A |
Foreign References:
| US20050054298 | ||||
| WO2002056632A1 |
Attorney, Agent or Firm:
Jyohei Yamashita
Michio Nagai
Michio Nagai