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Overall network performance and/or overall quality of service of a mobile communication network by assigning a physical cell identifier information to a plurality of radio cells

  • US 10,334,490 B2
  • Filed: 02/12/2016
  • Issued: 06/25/2019
  • Est. Priority Date: 03/10/2015
  • Status: Active Grant
First Claim
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1. A method for improving overall network performance and/or overall quality of service of a mobile communication network by assigning physical cell identifier information to a plurality of radio cells, wherein the mobile communication network comprises a core network and an access network, the access network comprising the plurality radio cells, wherein the plurality of radio cells are at least partly overlapping, forming a common radio coverage area, each radio cell of the plurality of radio cells being associated with a respective base station entity of a plurality of base station entities, each radio cell of the plurality of radio cells using a center frequency, and a unique cell global identifier information being assigned to each radio cell of the plurality of radio cells, wherein the method comprises the following steps:

  • in a first step and for each of a plurality of coverage area elements of the common radio coverage area, generating a set of handover likelihood information—

    regarding possible inter-frequency handover events between at least part of the plurality of radio cells and based on an estimated radio signal quality corresponding to the considered coverage area element—

    each element of the set of handover likelihood information being indicative of a possibility and/or a likelihood of a handover of the user equipment from at least one possible source radio cell of the plurality of radio cells to at least one possible target radio cell of the plurality of radio cells, the at least one source radio cell and the at least one target radio cell having, respectively, center frequencies in different frequency bands;

    in a second step, calculating, based on the elements of the sets of handover likelihood information—

    among the sets of handover likelihood information associated with the plurality of coverage area elements of the common radio coverage area—

    related to the at least one source radio cell and the at least one target radio cell, an overlap score value indicative of the overlap between the at least one source radio cell and the at least one target radio cell; and

    in a third step, assigning the physical cell identifier information to the at least one source radio cell and/or the at least one target radio cell dependent on the overlap score value;

    wherein the set of handover likelihood information, generated with respect to a considered coverage area element of the common radio coverage area, comprises a weighting factor, the weighting factor being dependent on at least one out of the following;

    an indication related to the amount or to the density of real time traffic in the coverage area element;

    an indication related to the amount or to the density of non-real time traffic in the coverage area element;

    an indication related to the digital land usage in the coverage area element;

    an indication related to the mobility of the user equipments in the coverage area element;

    a vector data set in the coverage area element related to a street and/or a motorway and/or a train line;

    oran indication related to the type of the source radio and/or to the type of the target radio cell and/or an indication related to the type of the relationship between the source and target radio cell.

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