一种新的双模微基站非授权信道接入方法

廖树日; 何世文; 杨绿溪

doi:10.11999/JEIT170184

一种新的双模微基站非授权信道接入方法

doi: 10.11999/JEIT170184

1.
(东南大学信息科学与工程学院南京 210096) ②(桂林电子科技大学认知无线电与信息处理教育部重点实验室桂林 541004)

基金项目:

国家自然科学基金(61471120, 61422105, 61671145)，桂林电子科技大学教育部重点实验室开放基金(CRKL160203)

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- 被引次数: 0
出版历程
- 收稿日期: 2017-03-01
- 修回日期: 2017-07-20
- 刊出日期: 2017-11-19

A Novel Dual-band Femtocells Unlicensed Channel Access Mechanism

1.
(School of Information Science and Engineering, Southeast University, Nanjing 210096, China)

Funds:

The National Natural Science Foundation of China (61471120, 61422105, 61671145), The Key Laboratory of Cognitive Radio and Information Processing, Ministry of Education (Guilin University of Electronic Technology) (CRKL160203)

摘要

摘要: 利用非授权频段频谱资源提升网络容量需要有效地解决LTE(Long Term Evaluation)与WiFi的共存问题。最近，学术界和工业界相继提出了授权频段辅助接入机制和双模微基站技术提升蜂窝通信系统容量。考虑双模微基站与WiFi接入点覆盖范围存在部分重叠场景，该文提出一种新的双模微基站非授权信道接入机制及联合授权非授权的优化频谱资源分配方案。仿真结果表明，双模微基站和WiFi接入点互不可见时，新方案相比于现有方案由于考虑了空间复用具有更好的系统性能；双模微基站和WiFi接入点互相可见时，新方案与现有方案性能一致，即两者分时独立占用非授权频段频谱资源。
- 授权频段辅助接入 /
- 双模微基站 /
- 信道接入机制 /
- 资源分配 /
- 覆盖重叠
Abstract: In order to efficiently utilize the unlicensed band to improve the network capacity, it is necessary to solve the problem of the coexistence between Long Term Evaluation (LTE) and WiFi. Licensed-Assisted Access (LAA) and the Dual-Band Femtocell (DBF) which can access both the licensed and unlicensed bands are proposed recently. In this paper, considering the case that a DBF partly overlaps with just one WiFi Access Point (AP), a novel DBF unlicensed channel access mechanism is proposed. Then, the optimal traffic balancing scheme over licensed and unlicensed bands considering the effect of coverage overlap is developed. Numerical results show that if DBF and WiFi AP are invisible mutually, the proposed scheme outperforms the existing scheme in terms of sum utility and throughput because of extra fraction of unlicensed channel time for DBF using spatial reuse. Otherwise the performance is the same as the existing scheme, that is, DBF and WiFi AP use the unlicensed band alternately.
- Licensed-Assisted Access (LAA) /
- Dual-Band Femtocell (DBF) /
- Channel access mechanism /
- Traffic balancing /
- Coverage overlapping

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参考文献(16)

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