Contention Protocol for Intelligent Transport Systems

智能传输系统的竞争协议

• 批准号: 15560316
• 负责人: HABUCHI Hiromasa
• 金额: $ 2.18万
• 依托单位: Ibaraki University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15560316/
• 关键词: Broadcasting System; Push type Compensation Protocol; Pull type Compensation Protocol; Intelligent Transport System; Code Shift Keying; Multi-code Sense Protocol; Wireless Communication; ALOHA Protocol; 無線パケット通信; Push型補間プロトコル; Pull型補間プロトコル; ブロッ

In this study, lost packet compensation protocol and modulation schemes / media access control schemes for the broadcasting system were investigated. (1) For lost packet compensation scheme, the push-type compensation protocol and the pull-type compensation protocol with the multi-code sense spread-spectrum scheme were proposed as feasible retransmission scheme for wireless broadcast systems. The compensation protocols for making up lack of the broadcast-packet with neighbor users mutually were analyzed on road-to-vehicle one-way communications. In particular, the probability of blocking and the average time for acquiring the broadcast packet were evaluated. Moreover, the optimum number of users in the inter vehicle communication (IVC) network is shown in the presence of shadowing and additive white gaussian noise. The push type compensation protocol is better than that of the pull type compensation protocol in the blocking probability. However, since the pull type compensation protoco … More l can detect the unsuccessful users, all users can complete compensation and suppress transmissions of useless packets. Moreover, the number of packet transmissions of the pull type compensation protocol is lower than that of the push type compensation protocol. (2) For media access control schemes, spread ALOHA schemes using code shift keying spread-spectrum communication (CSK/SS) system were investigated. (I) the dual-spreading sequence, which is multiplied the outer sequence (orthogonal sequence) by the inner sequence (M-sequence), and (II) the non-orthogonal sequence, which is constructed by concatenating M_<con> primitive orthogonal sequence, were proposed as the spreading sequence of CSK/SS. The CSK/SS ALOHA schemes outperform the conventional direct-sequence spread-spectrum (DS/SS) ALOHA scheme. The throughput of CSK/SS ALOHA with non-orthogonal sequences is 1.1 times greater than that with orthogonal sequences. Moreover, the throughput performance of the CSK/SS ALOHA with non-orthogonal sequences shows a 33.6% increase by applying Channel Load Sensing Protocol (CLSP). Less

在这项研究中，丢包补偿协议和调制方案/媒体访问控制方案的广播系统进行了研究。(1)对于丢包补偿方案，提出了基于推式补偿协议和拉式补偿协议的多码扩频重传方案。分析了路车单向通信中与相邻用户之间广播数据包相互弥补的补偿协议。特别地，评估了阻塞的概率和用于获取广播分组的平均时间。此外，在车辆间通信（IVC）网络中的最佳用户数的阴影和加性白色高斯噪声的存在下。推式补偿协议在阻塞率方面优于拉式补偿协议。然而，由于拉式补偿协议 ...更多信息 l可以检测出失败的用户，所有用户都可以完成补偿，抑制无用数据包的传输。此外，拉式补偿协议的分组传输的数量低于推式补偿协议的分组传输的数量。(2)对于媒体接入控制方案，研究了采用码移键控扩频通信（CSK/SS）系统的扩展ALOHA方案。(I)提出了一种CSK/SS系统的扩频序列，即由外部序列（正交序列）与内部序列（M序列）相乘得到的双扩频序列，以及由M本原正交序列级联得到的非正交序列<con>。CSK/SS ALOHA方案优于传统的直接序列扩频（DS/SS）ALOHA方案。采用非正交序列的CSK/SS ALOHA的吞吐量是采用正交序列的1.1倍。此外，与非正交序列的CSK/SS ALOHA的吞吐量性能表现出33.6%的增加，通过应用信道负载检测协议（CLSP）。少

项目成果

タイムホッピング型変形マルチパルス・パルス位置変調方式の同期性能

跳时改进多脉冲脉冲位置调制方法的同步性能

• 发表时间: 2004
• 期刊: 電子情報通信学会総合大会講演論文集
• 作者: 小野文枝

タイムホッピング型CSKのための同期法の提案

跳时CSK同步方法的提出

• 发表时间: 2004
• 期刊: 電子情報通信学会ソサイエティ大会講演論文集
• 作者: 伊藤あづみ

A Proposal of Synchronization for Time Hopping CSK

跳时CSK同步的建议

• 发表时间: 2004
• 期刊: 2004 IEICE Society Conference A-5-10
• 作者: Nobuyoshi Komuro;Azumi Ito;Azumi Ito
• 通讯作者: Azumi Ito

Analysis of the Pull-Type Packet Compensation Protocol using MCS/SS for Broadcast Network

广播网络MCS/SS拉式包补偿协议分析

• 发表时间: 2006
• 期刊: 2006 IEICE General Conference A-5-17
• 作者: T.Kashima;K.Fukawa;H.Suzuki;Koichiro Hashiura
• 通讯作者: Koichiro Hashiura

ユーザ数推定型CSK/SS無線パケット通信の送信確率に関する検討

用户数估计型CSK/SS无线分组通信传输概率研究

• 发表时间: 2005
• 期刊: 電子情報通信学会技術研究報告 CS2005
• 作者: T.Kashima;K.Fukawa;H.Suzuki;小室信喜
• 通讯作者: 小室信喜