Title:
BASE STATION DEVICE AND METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2017/022167
Kind Code:
A1
Abstract:
A secondary base station (2), while cooperating with the first master base station (1) to provide a radio terminal (4) with a secondary cell group (SCG) for DC, receives an SeNB addition request message (302) from a second master base station (3). In response to said SeNB addition request message (302) explicitly or implicitly indicating that the master base station in DC for the radio terminal (4) has changed from the first master base station (1) to the second master base station (3), the secondary base station (2) recognizes that the SeNB addition request message (302) is requesting modification of the previously configured SCG. By this means, it is possible, for example, to contribute to performing a change procedure of the master base station in dual connectivity (DC) by using signaling messages between base stations and an existing inter-base station interface procedure.
Inventors:
FUTAKI HISASHI (JP)
HAYASHI SADAFUKU (JP)
HAYASHI SADAFUKU (JP)
Application Number:
PCT/JP2016/002993
Publication Date:
February 09, 2017
Filing Date:
June 21, 2016
Export Citation:
Assignee:
NEC CORP (JP)
International Classes:
H04W36/18; H04W16/32; H04W36/04; H04W72/04; H04W92/20
Foreign References:
| US20150111580A1 | 2015-04-23 |
Other References:
CATT: "Solutions for inter-MeNB handover without SeNB change", 3GPP TSG RAN WG3#87 R3- 150219, 30 January 2015 (2015-01-30), XP050936972, Retrieved from the Internet [retrieved on 20160805]
ERICSSON: "Analysis of inter-MeNB handover without SeNB change", 3GPP TSG-RAN WG3 MEETING #87 R3-150329, 31 January 2015 (2015-01-31), XP050937080, Retrieved from the Internet [retrieved on 20150805]
SAMSUNG: "Handover enhancement", 3GPP TSG-RAN WG3 #87 R3-150134, 31 January 2015 (2015-01-31), XP050936887, Retrieved from the Internet [retrieved on 20160805]
ZTE: "Further discussion on the inter-MeNB handover enhancement in dual connectivity", 3GPP TSG-RAN WG3#87BIS R3-150627, 10 April 2015 (2015-04-10), XP050937244, Retrieved from the Internet [retrieved on 20160805]
KYOCERA CORP.: "Direct data forwarding during inter MeNB handover without SeNB change", 3GPP TSG RAN WG3 MEETING #89BIS R3- 152215, 26 September 2015 (2015-09-26), XP051040466, Retrieved from the Internet [retrieved on 20160805]
See also references of EP 3331281A4
ERICSSON: "Analysis of inter-MeNB handover without SeNB change", 3GPP TSG-RAN WG3 MEETING #87 R3-150329, 31 January 2015 (2015-01-31), XP050937080, Retrieved from the Internet
SAMSUNG: "Handover enhancement", 3GPP TSG-RAN WG3 #87 R3-150134, 31 January 2015 (2015-01-31), XP050936887, Retrieved from the Internet
ZTE: "Further discussion on the inter-MeNB handover enhancement in dual connectivity", 3GPP TSG-RAN WG3#87BIS R3-150627, 10 April 2015 (2015-04-10), XP050937244, Retrieved from the Internet
KYOCERA CORP.: "Direct data forwarding during inter MeNB handover without SeNB change", 3GPP TSG RAN WG3 MEETING #89BIS R3- 152215, 26 September 2015 (2015-09-26), XP051040466, Retrieved from the Internet
See also references of EP 3331281A4
Attorney, Agent or Firm:
IEIRI, Takeshi (JP)
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