Operating method of ENB for CGI information reporting in wireless communication system

Patent metadata

Field	Value
Publication number	US-10136414-B2
Application number	US-201514626521-A
Country	US
Kind code	B2
Filing date	Feb 19, 2015
Priority date	Jan 5, 2015
Publication date	Nov 20, 2018
Grant date	Nov 20, 2018

Abstract

CGI information reporting in a wireless communication system, a serving eNB receives a CGI information report and perform an ANR operation to maintain service quality through effective handover of UE at the edge of the service area of the serving eNB. When there is uplink/downlink data, the serving eNB stops data allocation to the UE and requests measurement reports (MRs) of neighbor eNBs, and the UE can be switched to a discontinuous reception (DRX) state during a DRX-inactivity time. Accordingly, it is possible to ensure decoding of a broadcast channel (BCH) of a neighbor cell and report CGI information.

First claim

What is claimed is:

1. An operating method of an evolved node base station (eNB) for cell global identity (CGI) information reporting in a wireless communication system, the method comprising:
requesting, by a serving eNB for user equipment (UE) among eNBs, measurement reports (MRs) on neighbor eNBs from the UE using a radio resource control (RRC) connection reconfiguration message resulting from an event;
performing, by the UE, measurement of the neighbor eNBs and then transmitting an MR on the event whose condition is satisfied to the serving eNB;
receiving, by the serving eNB, the MR, providing discontinuous reception (DRX) configuration information of the UE using an RRC connection reconfiguration message, and stopping uplink/downlink data resource allocation to the UE to request CGI information from the UE, wherein the UE is switched to a DRX state during a DRX-inactivity time to enable the UE to: (i) decode a broadcast channel (BCH) of a neighbor cell and (ii) report the CGI information to the serving eNB; and
while in the DRX state during a DRX inactivity time
decoding, by the UE, the broadcast channel (BCH) of the neighbor cell thereby acquiring CGI information while in the DRX state; and
reporting, by the UE, the CGI information to the serving eNB before a T321 cycle expires; then

storing, by the serving eNB, the reported CGI information, and updating a neighbor list;
resuming uplink/downlink data resource allocation to the UE from which CGI information has been requested and reported; and
stopping, by the serving eNB, a timer operated on a cycle T with a repeat count R.

2. The operating method of claim 1 , wherein the receiving, by the serving eNB, of the MR, the providing of the DRX configuration information of the UE using the RRC connection reconfiguration message, and the requesting of CGI information from the UE further comprise operating, by the serving eNB,; the timer set to have the cycle T with the repeat count R in preparation for a case in which CGI information is not reported due to trouble in the UE.

Assignees

• Innowireless Co Ltd
• Qucell Networks Co Ltd

Inventors

• Joung Jin Soup
• Ji Seung Hwan
• Jang Seo Kyun
• Kim Yong Hee

Classifications

• H04W72/20 Primary

  Control channels or signalling for resource management · CPC title

• H04W52/0219

  where the power saving management affects multiple terminals · CPC title

• Y02D70/24

  Cross-Sectional Technologies · mapped topic

• H04W52/0216

  using a pre-established activity schedule, e.g. traffic indication frame · CPC title

• Y02D70/1262

  Cross-Sectional Technologies · mapped topic