US 2015/0319611 A1 · Allocation of Physical Cell Identification

Abstract

A method includes generating, by a network element, a radio map of a single-frequency network having multiple cells. The radio map represents power levels of radio signals at several locations in the network. A first function is selected to be applied, wherein the first function is based on the radio map and includes physical cell identity, PCI, modulo 3 values for the multiple cells as input. Different combinations of the PCI modulo 3 values are applied in the first function. Each candidate PCI modulo 3 value is selected from a group of three available options. An output of the first function is determined with respect to each combination. It is determined which combination provides the output fulfilling a predefined criterion. Those PCI modulo 3 values, which correspond to the output fulfilling the predefined criterion, are allocated to the multiple cells in order to reduce interference between primary synchronization sequences.

Claims32

Dependent claims

A method, comprising:

generating, by a network element, a radio map of a single-frequency network having a plurality of cells, wherein the radio map represents power levels of radio signals at several locations in the network;
selecting a first function to be applied, wherein the first function is at least partly based on the radio map and comprises physical cell identity, PCI, modulo 3 values for the plurality of cells as input variables;
applying different combinations of the PCI modulo 3 values in the first function, wherein each candidate PCI modulo 3 value is selected from a group of three available options;
determining the output of the first function with respect to each combination;
determining which combination provides the output fulfilling a predefined criterion;
and
allocating those PCI modulo 3 values, which correspond to the output fulfilling the predefined criterion, to the plurality of cells in order to reduce the interference between primary synchronization sequences.

4 more elements

An apparatus, comprising:

at least one processor and at least one memory including a computer program code, wherein the at least one memory and the computer program code are configured, with the at least one processor, to cause the apparatus at least to:
generate a radio map of a single-frequency network having a plurality of cells, wherein the radio map represents power levels of radio signals at several locations in the network;
select a first function to be applied, wherein the first function is at least partly based on the radio map and comprises physical cell identity, PCI, modulo 3 values for the plurality of cells as input variables;
apply different combinations of the PCI modulo 3 values in the first function, wherein each candidate PCI modulo 3 value is selected from a group of three available options;
determine the output of the first function with respect to each combination;
determine which combination provides the output fulfilling a predefined criterion;
and
allocate those PCI modulo 3 values, which correspond to the output fulfilling the predefined criterion, to the plurality of cells in order to reduce the interference between primary synchronization sequences.

5 more elements

Dependencies are inferred from the claim text.

Allocation of Physical Cell Identification

Life of this patent

Allocation of Physical Cell Identification

Life of this patent

Abstract

Claims32