Dual Connectivity in LTE HetNets with Split Control- and User-Plane

Anna Zakrzewska, David López-Pérez, Stepan Kucera, Holger Claussen

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

Recently, a new network architecture with split control-plane and user-plane has been proposed and gained a lot of momentum in the standardisation of Long Term Evolution (LTE) Release 12. In this new network architecture, the controlplane, which transmits system information and handles user connectivity, and the user-plane, which manages user data, are split and no longer transmitted necessarily by the same network node. This dual connectivity confers a large flexibility to the system, and allows for a more energy efficient operation and enhanced mobility management. In this paper, we present a detailed description of our dual connectivity framework based on the latest LTE-Advanced enhancements, in which macrocellassisted (MA) small cells use different channel state informationreference signals (CSI-RS) to differentiate among each other and allow User Equipment (UE) to take adequate measurements for cell (re)selection. Taking into account the limited number of available CSI-RSs, we study the assignment problem of CSI-RSs to MA small cells, analyse CSI-RS collision and confusion issues and present simulation results to demonstrate the flexibility of the proposed network architecture.
Original languageEnglish
Title of host publicationGlobecom 2013 Workshop - Broadband Wireless Access
PublisherIEEE
Publication date2013
Pages391-396
ISBN (Print)978-1-4799-2851-4
DOIs
Publication statusPublished - 2013
Event9th IEEE Broadband wireless access workshop (BWA 2013) - Atlanta, Georgia, United States
Duration: 9 Dec 2013 → …
http://bwaws.org/GLOBECOM2013/

Conference

Conference9th IEEE Broadband wireless access workshop (BWA 2013)
CountryUnited States
CityAtlanta, Georgia
Period09/12/2013 → …
Internet address

Cite this

Zakrzewska, A., López-Pérez, D., Kucera, S., & Claussen, H. (2013). Dual Connectivity in LTE HetNets with Split Control- and User-Plane. In Globecom 2013 Workshop - Broadband Wireless Access (pp. 391-396). IEEE. https://doi.org/10.1109/GLOCOMW.2013.6825019