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Coordination and Antenna Domain Formation in Cloud-RAN Systems
KTH, School of Electrical Engineering (EES), Communication Theory. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.ORCID iD: 0000-0002-9442-671X
KTH, School of Electrical Engineering (EES), Communication Theory. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.
KTH, School of Electrical Engineering (EES), Communication Theory. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.ORCID iD: 0000-0002-6864-6970
KTH, School of Electrical Engineering (EES), Communication Theory. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.ORCID iD: 0000-0001-6682-6559
2016 (English)In: 2016 IEEE International Conference on Communications, ICC 2016, Institute of Electrical and Electronics Engineers (IEEE), 2016, 7511264Conference paper, Published paper (Refereed)
Abstract [en]

We study here the problem of Antenna Domain Formation (ADF) in cloud RAN systems, whereby multiple remote radio-heads (RRHs) are each to be assigned to a set of antenna domains (ADs), such that the total interference between the ADs is minimized. We formulate the corresponding optimization problem, by introducing the concept of interference coupling coefficients among pairs of radio-heads. We then propose a low-overhead algorithm that allows the problem to be solved in a distributed fashion, among the aggregation nodes (ANs), and establish basic convergence results. Moreover, we also propose a simple relaxation to the problem, thus enabling us to characterize its maximum performance. We follow a layered coordination structure: after the ADs are formed, radio-heads are clustered to perform coordinated beamforming using the well known Weighted-MMSE algorithm. Finally, our simulations show that using the proposed ADF mechanism would significantly increase the sum-rate of the system (with respect to random assignment of radio-heads).

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2016. 7511264
Series
IEEE International Conference on Communications, ISSN 1550-3607
Keyword [en]
5G, Cloud RAN, radio head assignment, antenna domain formation, interference coupling, block coordination descent
National Category
Communication Systems
Identifiers
URN: urn:nbn:se:kth:diva-184884DOI: 10.1109/ICC.2016.7511264ISI: 000390993203135Scopus ID: 2-s2.0-84981333316ISBN: 978-1-4799-6664-6 (print)OAI: oai:DiVA.org:kth-184884DiVA: diva2:917434
Conference
2016 IEEE International Conference on Communications, ICC 2016, Kuala Lumpur, Malaysia, 22 May 2016 through 27 May 2016
Funder
ICT - The Next Generation
Note

QC 20160407

Available from: 2016-04-06 Created: 2016-04-06 Last updated: 2017-01-31Bibliographically approved

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