Uppsala universitet

User-centric Pre-selection and Scheduling for Coordinated Multipoint Systems.

Annika Klockar , Karlstad University,
Mikael Sternad , Uppsala University
Anna Brunström , Karlstad University, and
Rikke Apelfröjd , Uppsala University.

International Symposium on Wireless Communication Systems (ISWCS) 2014, Barcelona, August 26-29 2014.
© 2014 IEEE

The data traffic volumes are constantly increasing in cellular networks. Furthermore, a larger part of the traffic is generated by applications that require high data rates. Techniques including Coordinated Multipoint transmission (CoMP) can increase the data rates, but at the cost of a high overhead.

The overhead is reduced if only a subset of the users are served with CoMP. In this paper, we propose a user selection approach, including pre-selection of CoMP users and scheduling, that takes user requirements into account, and uses the fact that some users have high requirements and others have lower.

Users that require a higher data rate to reach an acceptable level of service satisfaction are selected to use coherent joint processing CoMP in some of their downlink transmission bandwidth.

Simulation results show that the number of satisfied users and fairness are improved with the proposed user selection as compared to user selection that does not consider individual user requirements.

Related publications:
Utility as selection criterion in CoMP, IEEE PIMRC, London, 2013.

EURASIP JWCN 2014: Design and measurement based evaluation of coherent JT CoMP - A study of precoding, user grouping and resource allocation using predicted CSI.

Robust linear precoder for Coordinated Multipoint Joint Transmission under limited backhaul with imperfect channel state information. (IEEE ISWCS 2014).

PhD Thesis of Rikke Apelfröjd, April 2018.

Utility of Joint Processing Schemes, ISWCS 2010.


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