[1] Zou Shangzhang, Liu Nan, Pan Zhiwen, You Xiaohu, et al. An enhanced almost blank sub-frame managementfor efficient eICIC in non-uniform HetNets [J]. Journal of Southeast University (English Edition), 2017, 33 (1): 14-21. [doi:10.3969/j.issn.1003-7985.2017.01.003]
Copy
An enhanced almost blank sub-frame managementfor efficient eICIC in non-uniform HetNets(
)
非均匀HetNet下基于增强几乎空白子帧的高效eICIC
)Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]
- Volumn:
- 33
- Issue:
- 2017 1
- Page:
- 14-21
- Research Field:
- Information and Communication Engineering
- Publishing date:
- 2017-03-30
Info
- Title:
- An enhanced almost blank sub-frame managementfor efficient eICIC in non-uniform HetNets
- 非均匀HetNet下基于增强几乎空白子帧的高效eICIC
- Author(s):
- Zou Shangzhang, Liu Nan, Pan Zhiwen, You Xiaohu
- National Mobile Communications Research Laboratory, Southeast University, Nanjing 200096, China
- Keywords:
- low power almost blank sub-frame(LP-ABS); inter-cell interference coordination(eICIC); non-uniform heterogeneous network(HetNet)
- PACS:
- TN929
- DOI:
- 10.3969/j.issn.1003-7985.2017.01.003
- Abstract:
- A new enhanced inter-cell interference coordination(eICIC)is adopted for managing almost blank sub-frame(ABS), which jointly exploits the time, frequency and power dimensions to improve the resource utilization. In particular, a non-uniform two tier heterogeneous network(HetNet)is considered, where the pico cells are located close to the macro cell and the number of users in each pico cell is different. To alleviate the interference caused by the co-channel deployment, the macro cells employ low power ABS(LP-ABS), and the resource blocks(RBs)are divided into two parts during an ABS. One is exclusively reserved for macro cell users and the other is reserved for pico cell users. The macro cells are allowed to use different percentages of RBs and different powers for their own transmission during the LP-ABS. The user association, resource allocation, ABS proportion, the frequency band partition parameter and the transmission power of macro cells are considered, aiming at maximizing the proportional fairness utility of the system. An iterative algorithm is also proposed and simulation results demonstrate that the proposed algorithm can improve both the system throughput and user fairness compared with the existing schemes.
- 采用了一种新的增强干扰协调(eICIC)来管理ABS子帧, 该eICIC综合利用时域、频域以及功率调节来提高系统资源利用率.特别地, 考虑了一种Pico小区部署在Macro小区中心附近的2层非均匀异构网络, 并且每个Pico小区的用户个数各不相同.为了减轻同频信道部署所带来的干扰, Macro小区使用LP-ABS, 并将ABS时隙的资源块划分为2部分, 一部分只给Macro小区使用, 另一部分只给Pico小区使用.允许不同的Macro小区在LP-ABS时隙保留不同比率的频带资源以及不同的发送功率用于传输.综合考虑了用户连接、资源分配、ABS比率、频域划分参数以及Macro小区在LP-ABS时隙的发送功率, 其目标为最大化系统比例公平效用, 并且提出一种迭代算法求解.仿真结果表明, 该算法相比于现有方案在提高系统吞吐量的同时还保证了用户的公平性.
References:
[1] Tran T T, Shin Y, Shin O S. Overview of enabling technologies for 3GPP LTE-advanced[J]. EURASIP Journal on Wireless Communications and Networking, 2012, 2012(1): 54. DOI: 10.1186/1687-1499-2012-54.
[2] Lopez-Perez D, Güvenç I, de la Roche G, et al. Enhanced intercell interference coordination challenges in heterogeneous networks[J]. IEEE Wireless Communications, 2011, 18(3):22-30. DOI: 10.1109/MWC.2011.5876497.
[3] Merwaday A, Mukherjee S, Guvenc I. HetNet capacity with reduced power subframes[C]//2014 IEEE Wireless Communications and Networking Conference. Istanbul, Turkey, 2014: 1380-1385. DOI: 10.1109/WCNC.2014.6952371.
[4] Zou S Z, Liu N, Pan Z W, et al. Joint power and resource allocation for non-uniform topologies in heterogeneous networks[C]//2016 IEEE 83rd Vehicular Technology Conference(VTC Spring). Nanjing, China, 2016. DOI:10.1109/vtcspring.2016.7504311.
[5] Koutlia K, Perez-Romero J, Agusti R. Novel eICIC scheme for HetNets exploiting jointly the frequency, power and time dimensions[C]//2014 IEEE 25th Annual International Symposium on Personal, Indoor, and Mobile Radio Communication. Washington DC, USA, 2014: 1078-1082. DOI:10.1109/pimrc.2014.7136327.
[6] Koutlia K, Perez-Romero J, Agusti R. On enhancing almost blank subframes management for efficient eICIC in HetNets[C]//2015 IEEE 81st Vehicular Technology Conference(VTC Spring). Glasgow, UK, 2015: 15. DOI:10.1109/vtcspring.2015.7145960.
[7] Bedekar A, Agrawal R. Optimal muting and load balancing for eICIC[C]//2013 11th International Symposium on Modeling & Optimization in Mobile, Ad Hoc & Wireless Networks. Tsukuba Science City, Japan, 2013: 280-287.
[8] Jain R, Chiu D M, Hawe W R. A quantitative measure of fairness and discrimination for resource allocation in shared computer system[R]. Hudson, MA, USA: Digital Equipment Corporation, 1984.
[9] Ye Q Y, Rong B Y, Chen Y D, et al. User association for load balancing in heterogeneous cellular networks[J]. IEEE Transactions on Wireless Communications, 2013, 12(6): 2706-2716. DOI: 10.1109/TWC.2013.040413.120676.
[10] Boyd S Vandenberghe L. Convex optimization[M]. Cambridge University Press, 2004.
[11] Dai B Yu W. Sparse beamforming and user-centric clustering for downlink cloud radio access network[J]. IEEE Access, 2014, 2: 1326-1339. DOI: 10.1109/ACCESS.2014.2362860.
[12] Evolved Universal Terrestrial Radio Access. 3GPP TR 36.814 Further advancements for e-utra physical layer aspects[R].EUTR Access, 2010.
Memo
- Memo:
-
Biographies: Zou Shangzhang(1990—), male, graduate; You Xiaohu(corresponding author), male, doctor, professor, xhyu@seu.edu.cn.
Foundation items: The National Science and Technology Major Project(2016ZX03001011-005), the National Natural Science Foundation of China(No.61571123, 61521061), the Research Fund of National Mobile Communications Research Laboratory of Southeast University(No.2017A03), Qing Lan Project.
Citation: Zou Shangzhang, Liu Nan, Pan Zhiwen, et al. An enhanced almost blank sub-frame management for efficient eICIC in non-uniform HetNets[J].Journal of Southeast University(English Edition), 2017, 33(1):14-21.DOI:10.3969/j.issn.1003-7985.2017.01.003.