1. A method of characterizing a cellular telecommunications network area, the method comprising:
receiving measurement data characterizing measured cell quality of a plurality of radio cells in a plurality of spatiotemporal coordinate points;
selecting a plurality of sub-areas within a cellular telecommunications network area, each sub-area confining a plurality of spatiotemporal coordinate points;
calculating sub-area cell quality parameters of radio cells, each sub-area cell quality parameter representing cell quality of a radio cell within a sub-area and being calculated by combining measurement data within the sub-area; and
generating a cell preference list for at least a portion of the cellular telecommunications network area on the basis of the sub-area cell quality parameters.
2. The method of claim 1, further comprising:
generating sub-area-specific cell preference lists on the basis of the sub-area cell quality parameters; and
generating the cell preference list for the at least a portion of the cellular telecommunications network area by using the sub-area-specific cell preference lists.
3. The method of claim 1, further comprising:
associating each sub-area with a serving cell on the basis of the sub-area cell quality parameters;
generating sub-area-specific neighbour cell list for each sub-area on the basis of the sub-area cell quality parameters; and
generating an overall neighbour cell list for at least one serving cell by combining sub-area-specific neighbour cell lists generated for sub-areas associated with the at least one serving cell.
4. The method of claim 1, further comprising:
associating each sub-area with a serving cell on the basis of the sub-area cell quality parameters;
generating a sub-area-specific interfering cell list for each sub-area on the basis of the sub-area cell quality parameters; and
generating an overall interfering cell list for at least one serving cell by combining sub-area-specific interfering cell lists generated for sub-areas associated with the at least one serving cell.
5. The method of claim 1, further comprising:
scanning pilot channels transmitted to the radio cells to generate measurement data including measurement data elements; and
registering (spatiotemporal coordinate points for the measurement data elements.
6. The method of claim 1, further comprising:
receiving measurement data characterizing measured cell quality of a plurality of radio cells in a plurality of spatiotemporal coordinate points at least one of which being obtained from a satellite positioning system.
7. The method of claim 1, further comprising:
receiving measurement data including channel quality estimates measured in a plurality of spatiotemporal coordinate points, the channel quality estimates measured from pilot channels transmitted to the radio cells; and
calculating the sub-area cell quality parameters of radio cells by taking an average of the channel quality estimates of each cell within each sub-area.
8. A system for characterizing a cellular telecommunications network area, the system comprising:
a receiving means for receiving measurement data characterizing measured cell quality of a plurality of radio cells in a plurality of spatiotemporal coordinate points;
a selecting means for selecting a plurality of sub-areas within a cellular telecommunications network area, each sub-area confining a plurality of spatiotemporal coordinate points;
a calculating means for calculating sub-area cell quality parameters of radio cells, each sub-area cell quality parameter representing cell quality of a radio cell within a sub-area and being calculated by combining measurement data within the sub-area; and
a preference list generating means for generating a cell preference list for at least a portion of the cellular telecommunications network area on the basis of the sub-area cell quality parameters.
9. The system of claim 8, wherein the system further comprises a sub-area preference list generating means for generating sub-area-specific cell preference lists on the basis of the sub-area cell quality parameters; and the preference list generating means configured to generate the cell preference list for the at least a portion of the cellular telecommunications network area by using the sub-area-specific cell preference lists.
10. The system of claim 8, further comprising:
a first associating means for associating each sub-area with a serving cell on the basis of the sub-area cell quality parameters;
a sub-area-specific generating means for generating a sub-area-specific neighbour cell list for each sub-area on the basis of the sub-area cell quality parameters; and
the preference list generating means is configured to generate an overall neighbour cell list for at least one serving cell by combining sub-area-specific neighbour cell lists generated for sub-areas associated with the at least one serving cell.
11. The system of claim 8, further comprising:
a second associating means for associating each sub-area with a serving cell on the basis of the sub-area cell quality parameters;
an interfering cell list generating means for generating a sub-area-specific interfering cell list for each sub-area on the basis of the sub-area cell quality parameters; and
the preference list generating means is configured to generate an overall interfering cell list for at least one serving radio cell by combining sub-area-specific interfering cell lists generated for sub-areas associated with the at least one serving cell.
12. The system of claim 8, further comprising:
a scanning means for scanning pilot channels transmitted to the radio cells to generate measurement data including measurement data elements; and
a coordinate registering means for registering spatiotemporal coordinate points for the measurement data elements.
13. The system of claim 8, wherein the receiving means is configured to receive measurement data characterizing measured cell quality of a plurality of radio cells in a plurality of spatiotemporal coordinate points, at least one of which being obtained from a satellite positioning system.
14. The system of claim 8, wherein the receiving means is configured to receive measurement data including channel quality estimates measured in a plurality of spatiotemporal coordinate points, the channel quality estimates being measured from pilot channels transmitted to the radio cells; and
the calculating means is configured to calculate the sub-area cell quality parameters of radio cells by taking an average of the channel quality estimates of each cell within each sub-area.
15. A computer program product embodied on a computer readable distribution medium, the computer program product encoding a computer program of instructions for executing a computer process for characterizing a cellular telecommunications network area, the process comprising:
receiving measurement data characterizing measured cell quality of a plurality of radio cells in a plurality of spatiotemporal coordinate points;
selecting a plurality of sub-areas within a cellular telecommunications network area, each sub-area confining a plurality of spatiotemporal coordinate points;
calculating sub-area cell quality parameters of radio cells, each sub-area cell quality parameter representing cell quality of a radio cell within a sub-area and being calculated by combining measurement data within the sub-area; and
generating a cell preference list for at least a portion of the cellular telecommunications network area on the basis of the sub-area cell quality parameters.
16. A computer program distribution medium of claim 15, the distribution medium comprising a computer readable medium, a program storage medium, a record medium, a computer readable memory, a computer readable software distribution package, a computer readable signal, a computer readable telecommunications signal, and a computer readable compressed software package.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A weatherable polyolefin nanocomposite, comprising:
(a) polyolefin
(b) organoclay,
(c) compatibilizer, and
(d) UV stabilizers that filter wavelengths in a range influenced by presence of organoclay in the nanocomposite, wherein the organoclay is montmorillonite clay intercalated with an organic or semi-organic chemical.
2. The nanocomposite of claim 1, wherein polyolefin comprises any of homopolymers, copolymers, blends of polymers, mixtures of polymers, alloys of polymers, and combinations thereof, where at least one of the polymers is polymerized from an olefin monomer having 2 to 8 carbon atoms.
3. The nanocomposite of claim 2, wherein the polyolefin comprises wherein the polyethylene comprises low-density polyethylene, high-density, high molecular weight polyethylene, ultra-high molecular weight polyethylene, linear-low-density polyethylene, very-low density polyethylene, maleated polypropylene, polypropylene, polybutylene, polyhexene, polyoctene, and copolymers thereof, and ethylene-vinyl-acetate copolymer, and mixtures, blends or alloys of any of them.
4. The nanocomposite of claim 1, further comprising an impact modifier.
5. The nanocomposite of claim 4, wherein the impact modifier is selected from the group consisting of natural rubber, polyisoprene rubber, styrene-butadiene rubber, polybutadiene rubber, nitrile rubber, butyl rubber, ethylene-propylene-diene rubber (EPDM), ethylene-propylene copolymer, ethylene-hexene copolymer, ethylene-octene copolymer, and combinations thereof.
6. The composite of claim 1, wherein the compatibilizer is maleic anhydride grafted polypropylene.
7. The composite of claim 1, wherein the UV stabilizer is a chemical which has good absorption above 320 nm.
8. The composite of claim 7, wherein the UV stabilizer chemical filters light above 320 nm.
9. The composite of claim 8, wherein the UV stabilizer is a benzotriazole or a monomeric high molecular weight, sterically hindered amine light stabilizer.
10. The composite of claim 1, wherein the composite further includes optional additives.
11. The composite of claim 1, wherein the composite further includes optional polymers.
12. An article made from the weatherable polyolefin nanocomposite of claim 1.
13. The article of claim 12, wherein the article is a film of one layer or multiple layers.
14. The composite of claim 3, wherein the organoclay is montmorillonite clay intercalated with an organic or semi-organic chemical.
15. The composite of claim 3, wherein the compatibilizer is maleic anhydride grafted polypropylene.
16. The composite of claim 3, wherein the UV stabilizer is a chemical which has good absorption above 320 nm.
17. The composite of claim 16, wherein the UV stabilizer chemical filters light above 320 nm.
18. The composite of claim 17, wherein the UV stabilizer is a benzotriazole or a monomeric high molecular weight, sterically hindered amine light stabilizer.