Improving Load Balancing in Various User Distribution LTE Advanced HetNets through a Hybrid Channel-Gain Access-Aware Cell Selection Scheme
Keywords:
Cell Selection, Heterogeneous Networks, Load Balancing, Pico Connection Ratio, Uniform And Hotspot LTE Configurations,Abstract
Long Term Evolution (LTE)-Advanced Heterogeneous Networks (HetNets) deployment was introduced to address the increasing demand for Quality of Service (QoS), high data rates, and coverage extension. However, load balancing still remains a critical problem in HetNets. Adopting the conventional Reference Signal Receive Power (RSRP)-based cell selection in HetNets causes most user equipment (UE) to connect with the Macro eNodeBs (MeNBs) due to their higher transmit power as against that of the Pico eNodeBs (PeNBs), thus leading to serious load imbalance in HetNets. Therefore, this hybrid algorithm combined the channel gain-aware and the access-aware cell association metrics as a single metric for UE to base station association in LTE-Advanced HetNets deployment scenarios. The scenarios considered are the HetNets configuration 1 and configuration 4b. The developed Hybrid Channel Gain Access Aware (HCGAA) scheme improved load balancing performance by 25.4% and 12.1%, respectively, compared with the 3GPP RSRP and Reference Signal Receive Power plus Cell Range Expansion (RSRP +CRE) cell selection scheme. Also, an enhanced pico connection ratio of up to 40.2%, which is 21.3% more than that of the RSRP and RSRP +CRE cell selection schemes was achieved by the HCGAA algorithm. These improvements translate to the efficient utilization of the network resource and prevent crowding of certain cells in the network.Downloads
Published
How to Cite
Issue
Section
License
TRANSFER OF COPYRIGHT AGREEMENT
The manuscript is herewith submitted for publication in the Journal of Telecommunication, Electronic and Computer Engineering (JTEC). It has not been published before, and it is not under consideration for publication in any other journals. It contains no material that is scandalous, obscene, libelous or otherwise contrary to law. When the manuscript is accepted for publication, I, as the author, hereby agree to transfer to JTEC, all rights including those pertaining to electronic forms and transmissions, under existing copyright laws, except for the following, which the author(s) specifically retain(s):
- All proprietary right other than copyright, such as patent rights
- The right to make further copies of all or part of the published article for my use in classroom teaching
- The right to reuse all or part of this manuscript in a compilation of my own works or in a textbook of which I am the author; and
- The right to make copies of the published work for internal distribution within the institution that employs me
I agree that copies made under these circumstances will continue to carry the copyright notice that appears in the original published work. I agree to inform my co-authors, if any, of the above terms. I certify that I have obtained written permission for the use of text, tables, and/or illustrations from any copyrighted source(s), and I agree to supply such written permission(s) to JTEC upon request.