Title:
METHODS AND APPARATUS FOR DISCOVERY AND MEASUREMENT IN CELLULAR NETWORKS
Document Type and Number:
WIPO Patent Application WO/2015/137782
Kind Code:
A1
Abstract:
Adaptation of measurement procedures for cell detection and association provide more accurate and frequent reports for use by the network, to enhance cell association. A user equipment receives, within a configured measurement bandwidth, orthogonal frequency division multiplexing symbols comprising discovery reference signals (DRS). For subframes in which the DRS are transmitted, a discovery reference signal received quality (D-RSRQ) is determined from the DRS within the received symbols as a ratio of discovery reference signal received power (D-RSRP) to carrier discovery received signal strength indicator (D-RSSI), where the D-RSRP is measured in symbols containing DRS resource elements and the D-RSSI is measured in all symbols in subframes containing the DRS. For a UE configured to also measure common reference signals, non-DRS measurements are suspended upon deactivation of a secondary cell, and measurement timing of the DRS during a deactivation period is based on a measurement timing parameter.
Inventors:
NOVLAN THOMAS DAVID (US)
NG BOON LOONG (US)
LI YING (US)
NG BOON LOONG (US)
LI YING (US)
Application Number:
PCT/KR2015/002518
Publication Date:
September 17, 2015
Filing Date:
March 16, 2015
Export Citation:
Assignee:
SAMSUNG ELECTRONICS CO LTD (KR)
International Classes:
H04J11/00
Foreign References:
| US20140064131A1 | 2014-03-06 |
Other References:
"Performance evaluation for small cell on/off operation considering procedure and discovery/measurement enhancements", R1-140245, 3GPP TSG RAN WG1 MEETING #76, 10 February 2014 (2014-02-10), XP050735798
SAMSUNG: "Overview of small cell on/off scenarios and procedures", RL-140367, 3GPP TSG RAN WG1 MEETING #76, 10 February 2014 (2014-02-10), XP050735914
SAMSUNG: "Discovery signal requirements for small cells", R1-140369, 3GPP TSG RAN WG1 MEETING #76, 10 February 2014 (2014-02-10), XP050735916
ETRI: "Discovery signal design for small cell on/off", R1-140213, 3GPP TSG RAN WG1 MEETING #76, 10 February 2014 (2014-02-10), XP050735771
"E-UTRA, Physical channels and modulation", 3GPP TS 36.211 V11.2.0
"E-UTRA, Multiplexing and Channel coding.", 3GPP TS 36.212 VL 1.2.0
"E-UTRA, Physical Layer Procedures.", 3GPP TS 36.213 V11.2.0
"E-UT A, Physical Layer Measurement.", 3GPP TS 36.214 VL 1.1.0
"E-UTRA and E-UTRAN, Overall description. Stage 2", 3GPP TS 36.300 V 11.5.0
"E-UTRA, MAC protocol specification.", 3GPP TS 36.321 V 11.2.0
"E-UTRA, RRC Protocol specification.", 3GPP TS 36.331 V 11.3.0
"E-UTRA, Requirements for support of radio resource management.", 3GPP TS 36.133 V 11.4.0
"E-UTRA, Further advancements for E-UTRA physical layer aspects.", 3GPP TS 36.814 V9.0.0
See also references of EP 2949063A4
SAMSUNG: "Overview of small cell on/off scenarios and procedures", RL-140367, 3GPP TSG RAN WG1 MEETING #76, 10 February 2014 (2014-02-10), XP050735914
SAMSUNG: "Discovery signal requirements for small cells", R1-140369, 3GPP TSG RAN WG1 MEETING #76, 10 February 2014 (2014-02-10), XP050735916
ETRI: "Discovery signal design for small cell on/off", R1-140213, 3GPP TSG RAN WG1 MEETING #76, 10 February 2014 (2014-02-10), XP050735771
"E-UTRA, Physical channels and modulation", 3GPP TS 36.211 V11.2.0
"E-UTRA, Multiplexing and Channel coding.", 3GPP TS 36.212 VL 1.2.0
"E-UTRA, Physical Layer Procedures.", 3GPP TS 36.213 V11.2.0
"E-UT A, Physical Layer Measurement.", 3GPP TS 36.214 VL 1.1.0
"E-UTRA and E-UTRAN, Overall description. Stage 2", 3GPP TS 36.300 V 11.5.0
"E-UTRA, MAC protocol specification.", 3GPP TS 36.321 V 11.2.0
"E-UTRA, RRC Protocol specification.", 3GPP TS 36.331 V 11.3.0
"E-UTRA, Requirements for support of radio resource management.", 3GPP TS 36.133 V 11.4.0
"E-UTRA, Further advancements for E-UTRA physical layer aspects.", 3GPP TS 36.814 V9.0.0
See also references of EP 2949063A4
Attorney, Agent or Firm:
YOON, Dong Yol (3rd Fl Ace Highend Tower-5,226, Gasan Digital 1-ro,,Geumcheon-gu, Seoul 153-803, KR)
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