CPC-Based Backward-Compatible Network Access for LTE Cognitive Radio Cellular Networks

	CPC-Based Backward-Compatible Network Access for LTE Cognitive Radio Cellular Networks
	Liu, Ling 1,2; Zhou, Yiqing 1; Tian, Lin 1; Shi, Jinglin 1
	2015-07-01
发表期刊	IEEE COMMUNICATIONS MAGAZINE
ISSN	0163-6804
卷号	53 期号:7 页码:93-99
摘要	Network access plays an important role in LTE cognitive radio (LTE-CR) cellular networks in determining users' experiences. An overview is first carried out on network access schemes in existing cognitive cellular networks such as IEEE 802.22 and IEEE 1900.4, based on which it can be seen that cognitive pilot channel (CPC)-based network access is a promising scheme for LTE-CR, which may provide fast network access and put no stringent requirements on terminals. Next, considering the implementation issues of CPC in practical systems, a CPC-based backward-compatible network access scheme should be designed for LTE-CR to facilitate the application of CR in LTE networks, which could exploit existing LTE structures and technologies to carry CPC information. To achieve this, a new system information block (SIB) should be designed to carry CPC on a current physical downlink shared channel with little standards effort. Moreover, load awareness is introduced so that LTE-CR is activated only when the system load is high. The complete process of this SIB-CPC-based backward-compatible and load-aware network access is described, and its performance is evaluated via simulations. It is shown that the blocking ratio of LTE-CR can be reduced notably compared to that of conventional LTE without CR. Moreover, by selecting an appropriate load threshold to activate LTE-CR, the average user throughput of LTE can be improved with near-zero blocking ratio by offloading users to complementary cognitive spectra.
收录类别	SCI
语种	英语
资助项目	national 863 program of China[2014AA01A703] ; National Natural Science Foundation of China[61201231] ; Beijing Natural Science Foundation Project[61222103] ; New Technology Star Plan of Beijing[xx2013052]
WOS研究方向	Engineering ; Telecommunications
WOS类目	Engineering, Electrical & Electronic ; Telecommunications
WOS记录号	WOS:000358544500014
出版者	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
引用统计	被引频次：31[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://119.78.100.204/handle/2XEOYT63/9474
专题	中国科学院计算技术研究所期刊论文_英文
通讯作者	Liu, Ling
作者单位	1.Chinese Acad Sci, Inst Computing Technol, Beijing Key Lab Mobile Comp & Pervas Devices, Beijing 100864, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Liu, Ling,Zhou, Yiqing,Tian, Lin,et al. CPC-Based Backward-Compatible Network Access for LTE Cognitive Radio Cellular Networks[J]. IEEE COMMUNICATIONS MAGAZINE,2015,53(7):93-99.
APA	Liu, Ling,Zhou, Yiqing,Tian, Lin,&Shi, Jinglin.(2015).CPC-Based Backward-Compatible Network Access for LTE Cognitive Radio Cellular Networks.IEEE COMMUNICATIONS MAGAZINE,53(7),93-99.
MLA	Liu, Ling,et al."CPC-Based Backward-Compatible Network Access for LTE Cognitive Radio Cellular Networks".IEEE COMMUNICATIONS MAGAZINE 53.7(2015):93-99.