Rate-based cell range expansion for mmWave massive MIMO enabled two-tier HetNets
Paper in proceedings, 2019

This paper presents a Rate-based Cell Range Expansion (CRE) for mmWave massive Multiple Input Multiple Output (MIMO) enabled two-tier heterogeneous networks (Het-Nets) where macro base stations (BSs) operate at sub-6 GHz and small BSs operate at mmWave band. We design a new user association scheme with the consideration of disparities between macro BSs and small BSs, chiefly bandwidths combined with Signal to Interference plus Noise Ratio (SINR), although conventional CRE provides a fixed Cell Selection Offset (CSO) for all user equipments (UEs). A downlink model is put forth to analyze the performance of the proposed Rate-based CRE. Our scheme consists of two parts: CRE between small cells and CRE between macro cells and small cells. We also investigate the proposed method by evaluating the average user throughput and cell edge user throughput. System-level computer simulation results such as average user throughput and 5-percentile user throughput are provided. The results confirm that the proposed method can improve the average user throughput compared with the conventional CRE scheme and maintain the cell edge user throughput for such multi-frequency cooperative networks. Thus, this scheme is an effective solution for user association in 5G mmWave HetNets.

user association

Cell Range Expansion

mmWave massive MIMO enabled two-tier Het-Nets

user throughput

SINR

Author

Sisai Fang

Beijing University of Posts and Telecommunications (BUPT)

Xiaoxuan Zhu

China Science and Technology Exchange Centre

Xiaodong Xu

Beijing University of Posts and Telecommunications (BUPT)

Mengying Sun

Beijing University of Posts and Telecommunications (BUPT)

Tommy Svensson

Chalmers, Electrical Engineering, Communication and Antenna Systems, Communication Systems

2018 24th Asia-Pacific Conference on Communications, APCC 2018

275-279 8633532

24th Asia-Pacific Conference on Communications, APCC 2018
Ningbo, China,

Areas of Advance

Information and Communication Technology

Subject Categories

Telecommunications

Communication Systems

Signal Processing

DOI

10.1109/APCC.2018.8633532

More information

Latest update

4/15/2019