System and method for frequency planning in wireless communication networks
AssigneeSchema Ltd.
InventorsAmos Tanay, Yuval Davidor
Life of this patent
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Abstract
A system and method for frequency planning in a wireless communication network area using an impact matrix which relates signal interference impacts between sectors in a network service are for co-channel and adjacent channel interference. The impact matrix uses weighted propagation analysis and empirical measurement data to determine signal levels within each pixel of a network service area. The system merges the propagation analysis and empirical measurement data according to user assigned confidences.
Claims37
A method of generating an impact matrix for use in allocating frequency channels in a wireless communication network service area, the network area divided into a plurality of sectors which are further divided into a plurality of pixels, the impact matrix providing impact scores which characterizes sector by sector channel interference in the network service area, the method comprising:
- merging signal propagation analysis data and empirical measurement data to determine an anticipated signal level for each one of the plurality of pixels in the network service area;
- determining which one of the sectors in the network service area is a serving sector for at least one of the pixels;
- determining channel interference impact scores for the pixel based on the interference between the pixel's serving sector and each of the other sectors in the network service area;
- and
- providing sector by sector channel interference impact scores.
A system for developing an impact matrix for use in frequency channel planning in a wireless communication network service area, the communication network service area divided into sectors and pixels, the system comprising:
- means for determining a signal strength level for each pixel in the network service area;
- means for determining which of the sectors is a serving sector for each pixel in the network service area;
- means for determining an interference impact score between each pixel's serving sector and each of the other non-serving sectors in the network service area;
- and
- means for determining overall sector by sector interference impact scores for inclusion in the impact matrix, the overall sector by sector interference impact scores based on the interference impact sores for the pixels within which a sector is the serving sector.
A computer implemented process for creating an impact matrix for use in allocating channels in a wireless network which is divided into sectors, the impact matrix constructed based on a pixel by pixel analysis of signal interference within the network, the process comprising:
- determining a serving sector for at least one pixel in the network;
- determining weighted interference impact scores for the at least one pixel, the weighted interference impact scores based upon each of the non-serving sectors' interference impact upon the at least one pixel s serving sector;
- and
- determining overall impact scores based upon the weighted interference impact scores for the at least one pixel.
A computer readable medium containing a program which when executed on a computer causes the computer to perform a method for creating an impact matrix for use in frequency channel planning in a network service area which is divided into a plurality of pixels, the method comprising:
- determining a serving sector for each of the plurality of pixels in the network service area;
- determining weighted interference impact scores for at least a selected one of the pixels, the weighted interference impact scores based upon each of the non-serving sectors' interference impact upon the selected pixel's serving sector;
- and
- determining overall impact scores based upon the weighted interference impact scores, wherein the impact matrix characterizes the interference relationship between sectors in the network service area.
A method for creating an impact matrix for use in allocating channels in a wireless network which is divided into sectors, the impact matrix constructed based on a pixel by pixel analysis of signal interference within the network, the method comprising:
- determining a serving sector for at least one pixel in the network;
- determining weighted interference impact scores for the at least one pixel, the weighted interference impact scores based upon each of the non-serving sectors' interference impact upon the pixel's serving sector;
- and
- determining overall impact scores based upon the weighted interference impact scores for the at least one pixel.
A system for creating an impact matrix for use in allocating channels in a wireless network which is divided into sectors, the impact matrix constructed based on a pixel by pixel analysis of signal interference within the network, comprising:
- means for determining a serving sector for at least one pixel in the network;
- means for determining weighted interference impact scores for the at least one pixel, the weighted interference impact scores based upon each of the non-serving sectors' interference impact upon the pixel's serving sector;
- and
- means for determining overall impact scores based upon the weighted interference impact scores for the at least one pixel.
A method of allocating frequency channels in a wireless communication network service area which is divided into a plurality of sectors which are further divided into a plurality of pixels, comprising:
- determining respective anticipated signal levels for respective ones of the pixels by merging associated signal propagation analysis data and empirical measurement data;
- for respective ones of the pixels, determining which of the sectors in the network service area is a serving sector therefore based on the respective anticipated signal level, and determining channel interference impact scores based on interference caused by other ones of the sectors in the network service area;
- and
- generating data for use in an impact matrix based on the respective channel interference impact scores which characterizes sector by sector channel interference in the network service area;
- wherein the impact matrix data is adapted for use in allocating the frequency channels in the network service area.
A system for allocating frequency channels in a wireless communication network service area which is divided into a plurality of sectors which are further divided into a plurality of pixels, comprising:
- means for determining respective anticipated signal levels for respective ones of the pixels by merging associated signal propagation analysis data and empirical measurement data;
- means for determining, for respective ones of the pixels, which of the sectors in the network service area is a serving sector therefore based on the respective anticipated signal level, and for determining channel interference impact scores based on interference caused by other ones of the sectors in the network service area;
- and
- means for generating data for use in an impact matrix based on the respective channel interference impact scores which characterizes sector by sector channel interference in the network service area;
- wherein the impact matrix data is adapted for use in allocating the frequency channels in the network service area.
Dependencies are inferred from the claim text.