当前位置: X-MOL 学术Ad Hoc Netw. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
A cognitive radio-based fully blind multihop rendezvous protocol for unknown environments
Ad Hoc Networks ( IF 4.8 ) Pub Date : 2020-07-06 , DOI: 10.1016/j.adhoc.2020.102261
Saim Ghafoor , Cormac J. Sreenan , Kenneth N. Brown

In Cognitive Radio networking, the blind rendezvous problem is when two or more nodes must establish a link, but where they have no predefined schedule or common control channel for doing so. The problem becomes more challenging when the information about the existence of other nodes in the network, their topology, and primary user activity are also unknown, identified here as a fully blind rendezvous problem. In this paper, a novel and fully blind multihop (FBM) rendezvous framework is proposed with an extended modular clock algorithm (EMCA). The EMCA-FBM is a fully blind multihop rendezvous protocol as it assumes the number of nodes, primary radio activity and topology information as unknown. It is shown to work with different Cognitive Radio operating policies to achieve adaptiveness towards the unknown primary radio activity, and self-organization for autonomously handling the rendezvous process by using transmission schedules. It is capable of working without any information of neighbor nodes and terminating the rendezvous process whenever all or sufficient nodes are discovered. The proposed FBM is also shown to work as a general framework to extend existing single hop rendezvous protocols to work as a multihop rendezvous protocol. In comparison with other modified blind rendezvous strategies for multihop network, the combination of the proposed EMCA-FBM protocol and operating policies is shown to be effective in improving the average time to rendezvous (up to 70%) and neighbor discovery accuracy (almost 100%) while reducing harmful interference.



中文翻译:

用于未知环境的基于认知无线电的全盲多跳会合协议

在认知无线电网络中,盲点会合问题是两个或多个节点必须建立链接,但是它们没有预定义的时间表或公共控制信道来建立链接。当有关网络中其他节点的存在,它们的拓扑结构和主要用户活动的信息也未知时,该问题将变得更具挑战性,在此将其标识为完全盲的集合点问题。本文提出了一种新颖的全盲多跳(FBM)会合框架,该框架具有扩展的模块化时钟算法(EMCA)。EMCA-FBM是完全盲多跳集合点协议,因为它假定节点数量,主要无线电活动和拓扑信息未知。它可以与不同的认知无线电操作策略配合使用,以实现对未知主要无线电活动的适应性,以及使用传输时间表自主处理集合过程的自组织。它能够在没有邻居节点任何信息的情况下工作,并在发现所有或足够的节点时终止会合过程。拟议中的FBM也显示为可扩展现有单跳集合协议以用作多跳集合协议的通用框架。与针对多跳网络的其他修改的盲集合点策略相比,建议的EMCA-FBM协议和操作策略的组合可有效地改善平均集合点时间(最多70%)和邻居发现准确性(几乎100%) ),同时减少有害干扰。它能够在没有邻居节点任何信息的情况下工作,并在发现所有或足够的节点时终止会合过程。拟议中的FBM也显示为可扩展现有单跳集合协议以用作多跳集合协议的通用框架。与针对多跳网络的其他修改的盲集合点策略相比,建议的EMCA-FBM协议和操作策略的组合可有效地缩短平均集合点时间(最多70%)和邻居发现准确性(几乎100%) ),同时减少有害干扰。它能够在没有邻居节点任何信息的情况下工作,并在发现所有或足够的节点时终止会合过程。拟议中的FBM也显示为可扩展现有单跳集合协议以用作多跳集合协议的通用框架。与针对多跳网络的其他修改的盲集合点策略相比,建议的EMCA-FBM协议和操作策略的组合可有效地缩短平均集合点时间(最多70%)和邻居发现准确性(几乎100%) ),同时减少有害干扰。拟议中的FBM也显示为可扩展现有单跳集合协议以用作多跳集合协议的通用框架。与针对多跳网络的其他修改的盲集合点策略相比,建议的EMCA-FBM协议和操作策略的组合可有效地缩短平均集合点时间(最多70%)和邻居发现准确性(几乎100%) ),同时减少有害干扰。拟议中的FBM也显示为可扩展现有单跳集合协议以用作多跳集合协议的通用框架。与针对多跳网络的其他修改的盲集合点策略相比,建议的EMCA-FBM协议和操作策略的组合可有效地缩短平均集合点时间(最多70%)和邻居发现准确性(几乎100%) ),同时减少有害干扰。

更新日期:2020-07-06
down
wechat
bug