Interference coordination-based downlink scheduling for heterogeneous LTE-A networks

Publikationstyp
Conference Paper
Date Issued
2016-09-12
Sprache
English
Author(s)
Mendrzik, Rico 
Justavino Castillo, Rodrigo Alberto  
Bauch, Gerhard  
Seidel, Eiko  
Institut
Nachrichtentechnik E-8  
TORE-URI
http://hdl.handle.net/11420/3243
Volume
2016
Article Number
7564879
Citation
IEEE Wireless Communications and Networking Conference (2016): 7564879 (2016-09-12)
Publisher DOI
10.1109/WCNC.2016.7564879
Scopus ID
2-s2.0-84989819907
We propose a novel scheduler for an LTE-A network, which dynamically coordinates inter-cell interference for vulnerable users while limiting the effort of coordination. Vulnerable users are identified first, and then protected by assigning resources exclusively to them. Inter-cell interference coordination (ICIC) messages are transmitted to neighboring base stations (eNodeBs) via the X2 interface using LTE-Typical constraints. The proposed scheduler and ICIC methods are compliant with the LTE and LTE-A standards. Closed-loop spatial multiplexing is used. The proposed scheduler is evaluated in a 2-Tier heterogeneous network (HetNet). In comparison with the benchmark schedulers, simulation results for vulnerable users show a substantial gain in terms of throughput. In addition, the proposed scheduler guarantees a minimum data rate for a longer time.