Patent ID: 9578592
Date: 2017-02-21
CPC Classifications: H04J,H04L,H04W

Claim:
1. A method for assignment of Physical Cell Identities, PCIs, performed by a network node in a wireless communication network, said communication network comprising a plurality of Radio Base Stations (RBSs), the method comprising: determining a most densely located RBS of the plurality of RBSs, based on distances from each RBS to a certain number of other RBSs of the plurality of RBSs; starting from the most densely located RBS: for each RBS, i, for which a PCI is to be assigned, in order of increasing distance from the most densely located RBS: assigning a Secondary Synchronization Signal, SSS, to the RBSi from a set of SSSs, based on a distance from the RBSi to another RBS in the communication network associated with the same SSS, and a number of tiers between the RBSi and, at least, the other RBS; assigning a Primary Synchronization Signal, PSS, to the RBSi, based on the number of cells associated with the RBSi; assigning a PCI to the RBSi, based on the SSS and the PSS; based on the assignment of the PCI to the RBSi, communicating the PCI to the RBSi to control radio frequency signaling transmitted from the RBSi to user equipments within a cell serviced by the RBSi.