| Presentation | 2006-11-17 Communication Quality Improvement for VoIP over WLAN in Multi-cell Environment Kei IGARASHI, Akira YAMADA, Takatoshi SUGIYAMA, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | For real-time WLAN applications, Quality of Service (QoS) technologies for WLANs represent a key challenge to support such kinds of applications. Existing techniques to control the QoS, the Enhanced Distributed Channel Access (EDCA) is investigated so far. However it becomes clear that packet collision probability becomes higher as the number of simultaneous VoIP calls increases, which results in voice quality degradation. We already proposed MAC protocol for WLAN VoIP in single-cell environment. This report discusses the techniques for suppression of packet collisions in multi-cell environment. Simulation results show that performance of proposed method is better than EDCA in packet loss ratio in the scenario of two or three overlapping cells. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | WLAN / VoIP / EDCA / IEEE802.11e |
| Paper # | RCS2006-168 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2006/11/9(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Radio Communication Systems (RCS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Communication Quality Improvement for VoIP over WLAN in Multi-cell Environment |
| Sub Title (in English) | |
| Keyword(1) | WLAN |
| Keyword(2) | VoIP |
| Keyword(3) | EDCA |
| Keyword(4) | IEEE802.11e |
| 1st Author's Name | Kei IGARASHI |
| 1st Author's Affiliation | Researchj Laboratories, NTT DoCoMo, Inc.() |
| 2nd Author's Name | Akira YAMADA |
| 2nd Author's Affiliation | Researchj Laboratories, NTT DoCoMo, Inc. |
| 3rd Author's Name | Takatoshi SUGIYAMA |
| 3rd Author's Affiliation | Researchj Laboratories, NTT DoCoMo, Inc. |
| Date | 2006-11-17 |
| Paper # | RCS2006-168 |
| Volume (vol) | vol.106 |
| Number (no) | 360 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |