LTE系统中femtocell的动态频谱接入方法

左旭舟; 夏玮玮; 沈连丰

doi:10.11959/j.issn.1000-436x.2015013

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LTE系统中femtocell的动态频谱接入方法

学术论文 | 更新时间：2024-06-05

- LTE系统中femtocell的动态频谱接入方法
- Dynamic spectrum access method for femtocells in LTE
- 通信学报 2015年36卷第1期页码：111-120
- 作者机构：
  
  东南大学移动通信国家重点实验室，江苏南京 210096
- 作者简介：
- 基金信息：
  
  国家科技重大专项基金资助项目(2011ZX03005-004-03);国家自然科学基金资助项目(61171081);国家自然科学基金资助项目(61201175);东南大学移动通信国家重点实验室自主研究基金资助项目(2013A03)
- DOI：10.11959/j.issn.1000-436x.2015013
  中图分类号： TN914
- 网络首发：2015-01，
  
  纸质出版：2015-01-25
- 稿件说明：
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左旭舟, 夏玮玮, 沈连丰. LTE系统中femtocell的动态频谱接入方法[J]. 通信学报, 2015,36(1):111-120.

Xu-zhou ZUO, Wei-wei XIA, Lian-feng SHEN. Dynamic spectrum access method for femtocells in LTE[J]. Journal on Communications, 2015, 36(1): 111-120.
左旭舟, 夏玮玮, 沈连丰. LTE系统中femtocell的动态频谱接入方法[J]. 通信学报, 2015,36(1):111-120. DOI： 10.11959/j.issn.1000-436x.2015013.

Xu-zhou ZUO, Wei-wei XIA, Lian-feng SHEN. Dynamic spectrum access method for femtocells in LTE[J]. Journal on Communications, 2015, 36(1): 111-120. DOI： 10.11959/j.issn.1000-436x.2015013.

摘要

针对LTE系统中femtocell的通信需求，给出一种基于认知无线电技术的动态频谱接入方案，提出一种上行频谱的感知方法，femtocell 可发现周围被 macrocell 用户占用的频谱，还能进一步对这些频谱承载的业务类型进行识别，并根据不同的业务类型，选择不同的接入方法。如果femtocell检测到一段频谱承载的是话音业务，femtocell采用跳频的方法接入这段频谱；如果承载的是数据业务，femtocell就采用功率控制的方法接入频谱。仿真结果表明，该方法使femtocell实现对周围频谱承载业务的智能化识别和接入，从而在满足macrocell用户不同业务类型信干噪比要求的前提下，提高了femtocell小区的吞吐量。

Abstract

Dynamic spectrum access method for femtocells in LTE using cognitive radio method to meet the communication requestions was investigated.An uplink sensing method was proposed.By this method

femtocells could not only identify occupied spectrums but also identify service categories of those spectrums.A dynamic spectrum assess method of power control and frequency hopping for femtocells that ensured a low pre-definable performance impact to macro users was proposed.The femtocell could adopt power control to access the spectrum that carried data service while adopt frequency hopping to access the spectrum that carried voice service.Simulation results show that the downlink throughput of the femtocell can be significantly increased by using proposed spectrum access method.

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references

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XU Y , SUN Y , LI Y , et al . Joint sensing period and transmission time optimization for energy-constrained cognitive radios [J ] . EURASIP Journal on Wireless Communications and Networking , 2010 ,doi:10.1155/2010/8/18964.

JO H S , MUN C , MOON J , et al . Interference mitigation using uplink power control for two-tier femtocell networks [J ] . IEEE Trans on Wireless Comm , 2009 , 8 ( 10 ): 4906 - 4910 .

CHANDRASEKHAR V , ANDREWS J , SHEN Z , et al . Power control in two-tier femtocell networks [J ] . IEEE Trans on Wireless Comm , 2009 , 8 ( 8 ): 4316 - 4328 .

PUTZKE M , WIETFELD C . Self-organizing ad hoc femtocells for cell outage compensation using random frequency hopping [A ] . 2012 IEEE 23rd International Symposium on Personal Indoor and Mobile Radio Communications (PIMRC) [C ] . 2012 . 315 - 320 .

3GPP TS 36.213 V10.2.0 (2011-06) . Technical Specification,3rd GenerationPartnership Project; Technical Specification Group Radio Access Network;Evolved Universal Terrestrial Radio Access (E-UTRA); Physical layer procedures,(Release 10) [S ] .

R1-062714,3GPP . Further Investigations on Resource Block Sie for E-UTRA [S ] .

R1-062819,3GPP . Considerations for minimum TTI size for downlink LTE [S ] .

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