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[1] Bao Xu, Zhang Lei, Song Tiecheng,. QoE-based resource allocation protocolsin cognitive OFDMA network with hybrid model [J]. Journal of Southeast University (English Edition), 2015, 31 (1): 1-4. [doi:10.3969/j.issn.1003-7985.2015.01.001]
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QoE-based resource allocation protocolsin cognitive OFDMA network with hybrid model()
认知OFDMA混合网络模型中基于QoE的资源分配协议
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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:
31
Issue:
2015 1
Page:
1-4
Research Field:
Information and Communication Engineering
Publishing date:
2015-03-30

Info

Title:
QoE-based resource allocation protocolsin cognitive OFDMA network with hybrid model
认知OFDMA混合网络模型中基于QoE的资源分配协议
Author(s):
Bao Xu1;  Zhang Lei2;  Song Tiecheng2
1School of Computer Science and Telecommunication Engineering, Jiangsu University, Zhenjiang 212013, China
2National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China
鲍煦1;  张雷2;  宋铁成2
1江苏大学计算机科学与通信工程学院, 镇江212013; 2东南大学移动通信国家重点实验室, 南京210096
Keywords:
resource allocation;  cognitive radio network;  orthogonal frequency division multiple access(OFDMA);  quality of user experience;  mean opinion score
资源分配;  认知无线网络;  正交频分多址接入;  用户体验质量;  平均意见分数
PACS:
TN915.02
DOI:
10.3969/j.issn.1003-7985.2015.01.001
Abstract:
A resource allocation protocol is presented in an orthogonal frequency division multiple access(OFDMA)cognitive radio(CR)network with a hybrid model which combines overlay and underlay models. Without disrupting the primary user(PU)transmissions, the overlay model allows the secondary user(SU)to utilize opportunistically the idle sub-channels; the underlay model allows the SU to occupy the same sub-channels with PU. The proposed protocols are designed for maximizing the quality of experience(QoE)of CR users and switching dynamically between the overlay and underlay models. QoE is measured by the mean opinion score(MOS)rather than simply fulfilling the physical and medium access control(MAC)layer requirements. The simulations considering the file transfer and video stream services show that the proposed resource allocation strategy is spectrum efficient.
提出了一种应用于基于正交频分多址接入(OFDMA)的认知网络模型中的资源分配协议, 其认知网络采用了融合overlay和underlay的混合网络模型.在不影响主用户通信质量的前提下, overlay模型允许认知用户利用主用户未使用的空闲子信道;underlay模型允许认知用户和主用户共同占用子信道.该协议旨在最大化认知用户的体验质量(QoE), 动态地在overlay和underlay模型之间切换, 并通过平均意见分数(MOS)函数进行量化, 而非简单地满足各个用户在物理层和MAC层的限制条件.从对认知用户的文件传输和视频服务的仿真结果可看出, 所提出的资源分配协议具有较高的频谱效率.

References:

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Memo

Memo:
Biography: Bao Xu(1982—), male, doctor, associate professor, xbao@ujs.edu.cn.
Foundation items: The National Natural Science Foundation of China(No.61271207, 61372104), the Natural Science Foundation of Jiangsu Province(No.BK20130530), the Natural Science Foundation of the Jiangsu Higher Education Institutions of China(No.12KJB510002), the Programs of Senior Talent Foundation of Jiangsu University(No.11JDG130).
Citation: Bao Xu, Zhang Lei, Song Tiecheng. QoE-based resource allocation protocols in cognitive OFDMA network with hybrid model[J].Journal of Southeast University(English Edition), 2015, 31(1):1-4.[doi:10.3969/j.issn.1003-7985.2015.01.001]
Last Update: 2015-03-20