Title:
APPARATUS, SYSTEM AND METHOD FOR SCE/DC
Document Type and Number:
WIPO Patent Application WO/2015/136888
Kind Code:
A1
Abstract:
A UE (10) provides information on potential S'eNB(s). The information is forwarded from an MeNB (20_1) to an M'eNB (20_2) such that the M'eNB (20_2) can determine, before the handover happens, whether the M'eNB (20_2) will configure a new SeNB (S'eNB) and which S'eNB the M'eNB (20_2) will configure. In one of options, the MeNB (20_1) derives a key S'-KeNB for communication protection between the UE (10) and the S'eNB (30_1), and send the S'-KeNB to the M'eNB (20_2). In another option, the M'eNB (20_2) derives the S'-KeNB from a key KeNB* received from the MeNB (20_1). The M'eNB (20_2) sends the S'-KeNB to the S'eNB (30_1). Moreover, there are also provided several variations to perform SeNB Release, SeNB Addition, Bearer Modification and the like, in which the order and/or timing thereof can be different during the handover procedure.
Inventors:
ZHANG XIAOWEI (JP)
PRASAD ANAND RAGHAWA (JP)
PRASAD ANAND RAGHAWA (JP)
Application Number:
PCT/JP2015/001122
Publication Date:
September 17, 2015
Filing Date:
March 03, 2015
Export Citation:
Assignee:
NEC CORP (JP)
International Classes:
H04W36/28
Other References:
NSN ET AL: "SeNB change and inter-MeNB handover procedure", vol. RAN WG3, no. Prague, Czech Republic; 20140210 - 20140214, 13 February 2014 (2014-02-13), XP050755882, Retrieved from the Internet
KYOCERA: "Handover enhancements with dual connectivity", vol. RAN WG2, no. Prague, Czech Republic; 20140210 - 20140214, 9 February 2014 (2014-02-09), XP050791998, Retrieved from the Internet
ERICSSON: "Mobility procedures for dual connectivity", vol. RAN WG2, no. Prague, Czech Republic; 20140210 - 20140214, 9 February 2014 (2014-02-09), XP050737774, Retrieved from the Internet
"Study on Small Cell enhancements for E-UTRA and E-UTRAN; Higher layer aspects (Release 12", 3GPP TR 36.842, December 2013 (2013-12-01)
"3GPP TSG SA WG3 (Security) Meeting #74", S3-140211
"3GPP TSG SA WG3 (Security) Meeting #74", S3-140209
"3GPP TSG SA WG3 (Security) Meeting #74", S3-140210
KYOCERA: "Handover enhancements with dual connectivity", vol. RAN WG2, no. Prague, Czech Republic; 20140210 - 20140214, 9 February 2014 (2014-02-09), XP050791998, Retrieved from the Internet
ERICSSON: "Mobility procedures for dual connectivity", vol. RAN WG2, no. Prague, Czech Republic; 20140210 - 20140214, 9 February 2014 (2014-02-09), XP050737774, Retrieved from the Internet
"Study on Small Cell enhancements for E-UTRA and E-UTRAN; Higher layer aspects (Release 12", 3GPP TR 36.842, December 2013 (2013-12-01)
"3GPP TSG SA WG3 (Security) Meeting #74", S3-140211
"3GPP TSG SA WG3 (Security) Meeting #74", S3-140209
"3GPP TSG SA WG3 (Security) Meeting #74", S3-140210
Attorney, Agent or Firm:
IEIRI, Takeshi (Asahi Bldg. 5th Floor 3-33-8, Tsuruya-cho, Kanagawa-ku, Yokohama-sh, Kanagawa 35, JP)
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