| 講演名 | 2007-01-25 Performance Evaluation of Novel DSA Scheme using Traffic Characteristic for Wide Area Ubiquitous Network , |
|---|---|
| PDFダウンロードページ |  PDFダウンロードページへ |
| 抄録(和) | |
| 抄録(英) | Ubiquitous wireless networks and wireless sensor networks, which consist of access points and a number of wireless terminals with simple functions, provide users with a wide range of applications such as environment monitoring and traffic surveillance. In these networks, the access point must be capable of accommodating the great many wireless terminals, while providing high throughput performance. Therefore, we proposed a novel DSA scheme that employs both a polling-based method and a random access method. In this scheme, the access point polls the terminals to decrease the random accesses made by the terminals as much as possible; there are two kinds of polling channel: control channel (CcH) and data channel (Dch). Simulations verify that the proposed scheme with Dch offers better throughput performance than the conventional scheme under the condition of constant data size. However, the condition is not general because the data is quite varied (i.e. control information and user data in some upper layers). Therefore, we propose a new scheme, which selects the optimal polling channel between the Cch and the Dch. This scheme predicts the optimal Dch size by using the traffic characteristic so as to suppress bandwidth wastage, predicts the throughput for each polling channel, and selects the polling channel that offers the higher throughput. Simulations verify that the proposed scheme offers better transmission performance than conventional schemes. |
| キーワード(和) | |
| キーワード(英) | DSA / polling method / random access method / traffic characteristic / ubiquitous network |
| 資料番号 | SIP2006-153,RCS2006-211 |
| 発行日 |
| 研究会情報 | |
| 研究会 | RCS |
|---|---|
| 開催期間 | 2007/1/18(から1日開催) |
| 開催地（和） | |
| 開催地（英） | |
| テーマ（和） | |
| テーマ（英） | |
| 委員長氏名（和） | |
| 委員長氏名（英） | |
| 副委員長氏名（和） | |
| 副委員長氏名（英） | |
| 幹事氏名（和） | |
| 幹事氏名（英） | |
| 幹事補佐氏名（和） | |
| 幹事補佐氏名（英） | |
| 講演論文情報詳細 | |
| 申込み研究会 | Radio Communication Systems (RCS) |
|---|---|
| 本文の言語 | ENG |
| タイトル（和） | |
| サブタイトル（和） | |
| タイトル（英） | Performance Evaluation of Novel DSA Scheme using Traffic Characteristic for Wide Area Ubiquitous Network |
| サブタイトル（和） | |
| キーワード(1)（和/英） | / DSA |
| 第 1 著者 氏名（和/英） | / Yoshitaka SHIMIZU |
| 第 1 著者 所属（和/英） | NTT Network Innovation Laboratories, NTT Corporation |
| 発表年月日 | 2007-01-25 |
| 資料番号 | SIP2006-153,RCS2006-211 |
| 巻番号（vol） | vol.106 |
| 号番号（no） | 479 |
| ページ範囲 | pp.- |
| ページ数 | 6 |
| 発行日 | |