Presentation 2016-07-26
The Effect of the Number of Receivers and Playout Buffering Time on QoE of Audio-Video Groupcast with IEEE 802.11aa GCR
Takuya Komatsu, Toshiro Nunome,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) In this report, we assess the effect of reliable groupcast schemes on QoE of audio and video IP transmission over a wireless LAN. As reliable groupcast schemes, we use GCR (GroupCast with Retries) Unsolicited Retry and GCR Block Ack; they are standardized by IEEE 802.11aa. We assume that a wireless access point transmits audio and video streams to several terminals connected to the access point by groupcast. We compare three schemes: groupcast with EDCA (Enhanced Distributed Channel Access), GCR Unsolicited Retry and GCR Block Ack. We perform a computer simulation under various network conditions to assess application-level QoS and evaluate QoE by a subjective experiment. As a result, we find that GCR Block Ack shows higher QoE than the other two schemes under various network conditions.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) wireless LAN / IEEE 802.11aa / groupcast / audio and video transmission / QoE
Paper # CQ2016-39
Date of Issue 2016-07-19 (CQ)

Conference Information
Committee CQ
Conference Date 2016/7/26(2days)
Place (in Japanese) (See Japanese page)
Place (in English) The Osaka Umeda Campus, Kwansei Gakuin Univesity
Topics (in Japanese) (See Japanese page)
Topics (in English) Measurement and Control of QoE and QoS, etc.
Chair Kyoko Yamori(Asahi Univ.)
Vice Chair Takanori Hayashi(NTT) / Hideyuki Shimonishi(NEC)
Secretary Takanori Hayashi(Osaka Univ.) / Hideyuki Shimonishi(Keio Univ.)
Assistant Hirantha Abeysekera(NTT) / Norihiro Fukumoto(KDDI R&D Labs.)

Paper Information
Registration To Technical Committee on Communication Quality
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) The Effect of the Number of Receivers and Playout Buffering Time on QoE of Audio-Video Groupcast with IEEE 802.11aa GCR
Sub Title (in English)
Keyword(1) wireless LAN
Keyword(2) IEEE 802.11aa
Keyword(3) groupcast
Keyword(4) audio and video transmission
Keyword(5) QoE
1st Author's Name Takuya Komatsu
1st Author's Affiliation Nagoya Institute of Technology(Nagoya Inst. of Tech.)
2nd Author's Name Toshiro Nunome
2nd Author's Affiliation Nagoya Institute of Technology(Nagoya Inst. of Tech.)
Date 2016-07-26
Paper # CQ2016-39
Volume (vol) vol.116
Number (no) CQ-161
Page pp.pp.37-42(CQ),
#Pages 6
Date of Issue 2016-07-19 (CQ)