| Presentation | 2015-09-01 A Quality Improvement Method for VoIP on Mobile Networks Considering Delay Spikes Koichi Nihei, Kozo Satoda, Hiroshi Yoshida, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Quality degradation of voice communication due to delay spikes, which are sudden large increases in the packet delay, is a key issue for VoIP on mobile networks. To resolve this issue, the authors have proposed a delay spike reduction method which controls the size (voice codec type) and sending interval of voice packets according to the radio communication quality and have con rmed the effectiveness of the delay spike reduction. This paper proposes a method which controls the size and sending interval of voice packets on the basis of quality of experience (QoE). The proposed method de nes a QoE indicator considering delay spikes and controls the size and sending interval for maximizing the QoE indicator. The method improves the mean opinion score (MOS) by 0.4. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | VoIP / delay spikes / mobile networks / LTE / QoE (Quality of Experience) |
| Paper # | CQ2015-40 |
| Date of Issue | 2015-08-25 (CQ) |
| Conference Information | |
| Committee | CQ |
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| Conference Date | 2015/9/1(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kyoto Institute of Technology |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Kyoko Yamori(Asahi Univ.) |
| Vice Chair | Takanori Hayashi(NTT) / Hideyuki Shimonishi(NEC) |
| Secretary | Takanori Hayashi(NEC) / Hideyuki Shimonishi(Osaka Univ.) |
| Assistant | Masahiro Yamamoto(OKI) / Bo GU(Waseda Univ.) / Hirantha Abeysekera(NTT) |
| Paper Information | |
| Registration To | Technical Committee on Communication Quality |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Quality Improvement Method for VoIP on Mobile Networks Considering Delay Spikes |
| Sub Title (in English) | |
| Keyword(1) | VoIP |
| Keyword(2) | delay spikes |
| Keyword(3) | mobile networks |
| Keyword(4) | LTE |
| Keyword(5) | QoE (Quality of Experience) |
| 1st Author's Name | Koichi Nihei |
| 1st Author's Affiliation | NEC Corporation(NEC) |
| 2nd Author's Name | Kozo Satoda |
| 2nd Author's Affiliation | NEC Corporation(NEC) |
| 3rd Author's Name | Hiroshi Yoshida |
| 3rd Author's Affiliation | NEC Corporation/Tokyo Institute of Technology(NEC/Tokyo Tech) |
| Date | 2015-09-01 |
| Paper # | CQ2015-40 |
| Volume (vol) | vol.115 |
| Number (no) | CQ-206 |
| Page | pp.pp.1-6(CQ), |
| #Pages | 6 |
| Date of Issue | 2015-08-25 (CQ) |