Uplink Power Control of the DUDE Mode in HetNets

As current cellular networks are becoming increasingly heterogeneous, traditional cell association rule based on the maximum downlink received power no longer serves well. The downlink and uplink decoupling (DUDE) are proposed for improving system performance. However, in DUDE association scheme, macro user equipment (MUE) will suffer more interference from the offloaded DUDE user equipment (DUDE UE) in uplink. In this paper, we apply the power control scheme to mitigate co-channel interference from small user equipment (SUE) and DUDE UE to MUE and guarantee the Quality of Service (QoS) of each user. We extend three power control schemes in homogeneous networks to HetNets and compare the convergence and optimality of these schemes through theory analysis. In addition, we propose an improved distributed power control (IDPC) scheme. The simulation results show that the IDPC scheme can effectively improve the system performance, especially when many users suffering severe mutual interference.

[1]  Marco Di Renzo,et al.  Analytical Modeling of Interference Aware Power Control for the Uplink of Heterogeneous Cellular Networks , 2016, IEEE Transactions on Wireless Communications.

[2]  Federico Boccardi,et al.  Downlink and Uplink Decoupling: A disruptive architectural design for 5G networks , 2014, 2014 IEEE Global Communications Conference.

[3]  Gregory J. Pottie,et al.  Channel access algorithms with active link protection for wireless communication networks with power control , 2000, TNET.

[4]  Stephen V. Hanly,et al.  Congestion measures in DS-CDMA networks , 1999, IEEE Trans. Commun..

[5]  Yu Sun,et al.  Game Theory Based Uplink Power Control for UL/DL Split Scenario in Small Cell Networks , 2014, 2014 IEEE 80th Vehicular Technology Conference (VTC2014-Fall).

[6]  Gang Feng,et al.  Uplink Performance Improvement by Decoupling Uplink/Downlink Access in HetNets , 2017, IEEE Transactions on Vehicular Technology.

[7]  Jeffrey G. Andrews,et al.  Why to decouple the uplink and downlink in cellular networks and how to do it , 2015, IEEE Communications Magazine.

[8]  Liljana Gavrilovska,et al.  Analysis of the Decoupled Access for Downlink and Uplink in Wireless Heterogeneous Networks , 2014, IEEE Wireless Communications Letters.

[9]  Daniel Pérez Palomar,et al.  Exploiting Hidden Convexity For Flexible And Robust Resource Allocation In Cellular Networks , 2007, IEEE INFOCOM 2007 - 26th IEEE International Conference on Computer Communications.

[10]  Jeffrey G. Andrews,et al.  Seven ways that HetNets are a cellular paradigm shift , 2013, IEEE Communications Magazine.

[11]  Jeffrey G. Andrews,et al.  Power control in two-tier femtocell networks , 2008, IEEE Transactions on Wireless Communications.

[12]  Gerard J. Foschini,et al.  A simple distributed autonomous power control algorithm and its convergence , 1993 .

[13]  Jeffrey G. Andrews,et al.  Joint Rate and SINR Coverage Analysis for Decoupled Uplink-Downlink Biased Cell Associations in HetNets , 2014, IEEE Transactions on Wireless Communications.