Micro mobility management for heterogeneous networks in LTE-A

Min Soo Woo, Seong Mun Kim, Seung Eun Hong, Sung-Gi Min

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    2 Citations (Scopus)

    Abstract

    Heterogeneous network, which consists of macro-cells and small cells, is actively researched in Long Term Evolution (LTE) area. The present handover procedure is not considered for the heterogeneous network environment. As the coverage of a small cell is limited, more frequent handovers occur. Therefore, workloads of a Mobility Management Entity (MME) and a Serving Gateway (SGW) increase. We propose the micro mobility management to reduce the workloads of the MME and the SGW. The proposed scheme introduces the mobility anchor, which handles handover between small cells without the participation of the MME and the SGW. The mobility anchor hides the change of the data path of a User Equipment (UE) from the SGW. Also, the MME can receive the notification of the change of the control path for maintenance of the Non Access Stratum (NAS) channel between the MME and the UE. The MME no longer relays the data path control signal to the SGW. The simulation result shows the reduction of the handover latency due to the simplified handover procedure.

    Original languageEnglish
    Title of host publication2015 38th International Conference on Telecommunications and Signal Processing, TSP 2015
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    Pages45-48
    Number of pages4
    ISBN (Print)9781479984985
    DOIs
    Publication statusPublished - 2015 Oct 9
    Event2015 38th International Conference on Telecommunications and Signal Processing, TSP 2015 - Prague, Czech Republic
    Duration: 2015 Jul 92015 Jul 11

    Other

    Other2015 38th International Conference on Telecommunications and Signal Processing, TSP 2015
    Country/TerritoryCzech Republic
    CityPrague
    Period15/7/915/7/11

    Keywords

    • handover procedure
    • heterogeneous network
    • HetNet
    • LTE
    • LTE-A
    • mobility anchor

    ASJC Scopus subject areas

    • Computer Networks and Communications
    • Signal Processing

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