1. A method of wireless communication, comprising:
partitioning at least one reverse link resource between orthogonal and non-orthogonal transmissions such that the reverse link resources allocated to the orthogonal and non-orthogonal transmissions are non-overlapping in at least one resource dimension;
scheduling the orthogonal transmissions using dedicated rate control;
scheduling the non-orthogonal transmissions using common rate control; and
wherein partitioning said at least one reverse link resource comprises allocating a first portion of the reverse link resource to at least one first mobile station for orthogonal reverse link transmission to a base station and allocating a second portion of the reverse link resource to at least one second mobile station for non-orthogonal reverse link transmissions to the base station.
2. The method of claim 1, wherein partitioning said at least one reverse link resource comprises allocating the first portion of the reverse link resource to a plurality of first mobile stations for transmission according to orthogonal frequency division multiplexing and allocating the second portion of the reverse link resource to a plurality of second mobile stations for transmission according to code division multiple access.
3. The method of claim 1, wherein allocating the first and second portions of the reverse link resource comprises transmitting first and second messages from the base station to said at least one first mobile station and said at least one second mobile station, respectively, indicating allocation of the first and second portions of the reverse link resource.
4. The method of claim 1, wherein partitioning said at least one reverse link resource comprises partitioning said at least one reverse link resource such that orthogonal and non-orthogonal transmission are non-overlapping in time.
5. The method of claim 1, wherein partitioning said at least one reverse link resource comprises partitioning said at least one reverse link resource such that orthogonal and non-orthogonal transmission are non-overlapping in frequency.
6. The method of claim 1, wherein partitioning said at least one reverse link resource comprises partitioning said at least one reverse link resource such that orthogonal and non-orthogonal transmission are non-overlapping in at least one spatial dimension.
7. The method of claim 1, wherein scheduling the orthogonal transmissions using dedicated rate control comprises transmitting separate rate commands to each mobile station so that each mobile station can determine a transmission rate independently based on the corresponding rate command.
8. The method of claim 1, wherein scheduling the non-orthogonal transmissions using common rate control comprises transmitting a common rate command to a plurality of mobile stations so that each of the plurality of mobile stations can determine a transmission rate based on the common rate command.
9. The method of claim 1, comprising receiving scheduled signals from the first and second mobile stations using the allocated first and second resources.
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 fire-resistant composition comprising at least:
a) a star polyamide-based polyamide matrix comprising at least macromolecular chains of formula (I):
R1\u2014-A-X\u2014(\u2014Y\u2014R2-Z-)n\u2014R3m\u2003\u2003(I)
\u2003and, optionally, macromolecular chains of formula (II):
R4\u2014\u2014Y\u2014R2-Z-p\u2014R3\u2003\u2003(II)
wherein:
Y is the radical:
\u2003when X and Z represent the radical:
Y is the radical:
\u2003when X and Z represent the radical:
A is a covalent bond or an aliphatic hydrocarbon-based radical optionally having hetero atoms and having from 1 to 20 carbon atoms;
R1 is a linear or cyclic, aromatic or aliphatic hydrocarbon-based radical having at least 2 carbon atoms, and optionally having hetero atoms;
R2 is an aliphatic or aromatic, branched or unbranched hydrocarbon-based radical having from 2 to 20 carbon atoms;
R3 and R4 are independently selected from the group consisting of hydrogen, an \u2014OH radical andor a hydrocarbon-based radical having at least one group:
R5 represents hydrogen or a hydrocarbon-based radical having from 1 to 6 carbon atoms;
m represents an integer between 3 and 8;
n represents an integer between 50 and 200; and
p represents an integer between 50 and 200; and
b) a fire-resistant composition comprising at least; a compound (F1) of formula (VI):
wherein:
R6 and R7 are identical or different and represent a linear or branched alkyl chain having from 1 to 6 carbon atoms andor an aryl radical;
M is selected from the group consisting of a calcium, magnesium, aluminum andor zinc ion;
Z represents 2 or 3; and
a compound (F2), which is a product of reaction between phosphoric acid and melamine andor a product of reaction between phosphoric acid and a condensed melamine product.
2. The composition as claimed in claim 1, comprising from 30% to 99% by weight of the star polyamide relative to the total weight of the composition.
3. The composition as claimed in claim 1, comprising from 1% to 70% by weight of the fire-resistant system relative to the total weight of the composition.
4. The composition as claimed in claim 1, wherein the radical R1 is a cycloaliphatic, arylaliphatic or linear aliphatic group, with a mass ratio between the weight of polymer chains of formula (I) and the total weight of polymer chains of formulae (I) and (II) being between 0.10 and 1.
5. The composition as claimed in claim 1, wherein the radical R1 is an aromatic radical, with a mass ratio between the weight of polymer chains of formula (I) and the total weight of polymer chains of formulae (I) and (II) being less than 1.
6. The composition as claimed in claim 1, wherein R2 is a pentamethylene radical.
7. The composition as claimed in claim 1, wherein R1 represents a cyclohexanonetetrayl, 1,1,1-triylpropane, 1,2,3-triylpropane or:
8. The composition as claimed in claim 1, wherein A represents a methylene, polymethylene or polyoxyalkylene group.
9. The composition claimed in claim 1, wherein the phosphinic acid of compound F1 is dimethylphosphinic acid, ethylmethylphosphinic acid, diethylphosphinic acid, methyl-n-propylphosphinic acid, or a mixture thereof.
10. The composition as claimed in claim 1, wherein the compound F2 is melamine polyphosphate, melam polyphosphate, melem polyphosphate, or a mixture thereof.
11. The composition as claimed in claim 1, further comprising from 0 to 80% by weight of reinforcing fillers relative to the total weight of the composition.
12. The composition as claimed in claim 11, wherein said reinforcing fillers are glass fibers, carbon fibers, mineral fibers, ceramic fibers, heat-resistant organic fibers, polyphthalamide fibers, mineral fillers, wollastonite, kaolin, clay, silica, mica, mineral nanofillers, montmorillonite or \u03b1-Zr phosphate.
13. The composition as claimed in claim 1, further comprising fire-resistant agents or fire-resistant-system synergists selected from the group consisting of inorganic compounds andor mineral products.
14. The composition as claimed in claim 13, wherein the fire-resistant agents or fire-resistant-system synergists are zeolites, ceramic powder, magnesium hydroxide, hydrotalcites, magnesium carbonates, zinc oxide, zinc stannate, zinc hydroxystannate, zinc phosphate, zinc borate, zinc sulfide, aluminum hydroxide, aluminum phosphate, red phosphorus, organonitrogen compounds of the triazine class, melamine, melamine cyanurate, melamine phosphates, polyphosphates, pyrophosphates or organophosphorous acids.
15. A process for manufacturing a fire-resistant composition, comprising the steps of:
1) mixing together:
a) a star polyamide-based polyamide matrix comprising at least macromolecular chains of formula (I):
R1\u2014-A-X\u2014(\u2014Y\u2014R2-Z-)n\u2014R3m\u2003\u2003(I)
\u2003and optionally macromolecular chains of formula (II):
R4\u2014\u2014Y\u2014R2-Z-p\u2014R3\u2003\u2003(II)
wherein:
Y is the radical:
\u2003when X and Z represent the radical:
Y is the radical:
\u2003when X and Z represent the radical:
A is a covalent bond or an aliphatic hydrocarbon-based radical optionally having hetero atoms and having from 1 to 20 carbon atoms;
R1 is a linear or cyclic, aromatic or aliphatic hydrocarbon-based radical having at least 2 carbon atoms and optionally having hetero atoms;
R2 is an aliphatic or aromatic, branched or unbranched hydrocarbon-based radical having from 2 to 20 carbon atoms;
R3 and R4 independently represent hydrogen, an \u2014OH radical andor a hydrocarbon-based radical having at least one group:
R5 represents hydrogen or a hydrocarbon-based radical having from 1 to 6 carbon atoms;
m represents an integer between 3 and 8;
n represents an integer between 50 and 200;
p represents an integer between 50 and 200; and
b) a fire-resistant composition comprising at least:
a compound (F1) of formula (VI):
wherein:
R6 and R7 are identical or different and represent a linear or branched alkyl chain having from 1 to 6 carbon atoms andor an aryl radical;
M represents a calcium, magnesium, aluminum andor zinc ion;
Z represents 2 or 3; and
a compound (F2), which is a product of reaction between phosphoric acid and melamine andor a product of reaction between phosphoric acid and a condensed melamine product; and
2) recovering the fire-resistant composition obtained in step 1).
16. An article made by the process of forming a composition as claimed in claim 1, wherein said forming is an extrusion process, a molding process, an injection process or a spinning process.