1. A communications method comprising:
scrambling a plurality of modulation symbols as a function of a wireless terminal identifier to produce scrambled modulation symbols; and
transmitting said scrambled modulation symbols.
2. The method of claim 1, wherein said scrambling includes:
subjecting said plurality of modulation symbols on a symbol by symbol basis to a phase rotation operation wherein each phase rotation is by an amount which is one of a plurality of different amounts, the amount of rotation applied to a particular one of the modulation symbols being determined by a corresponding N bits of said wireless terminal identifier where N is a positive integer.
3. The method of claim 2, wherein said plurality of different amounts is 2N.
4. The method of claim 3, wherein N is one.
5. The method of claim 4, wherein zero and 180 degrees are the different amounts of phase rotation.
6. The method of claim 1, wherein said scrambling includes:
subjecting at least a first N of the plurality of modulation symbols on a symbol by symbol basis to a phase rotation operation wherein the phase rotation is one of a first and a second amount determined by a corresponding bit in said wireless terminal identifier, where N is a positive integer.
7. The method of claim 6, wherein said wireless terminal identifier is an N bit identifier.
8. The method of claim 7, wherein each bit of the N bit identifier corresponds to a different one of the first N of the plurality of modulation symbols.
9. The method of claim 6, wherein said scrambling further includes:
subjecting at least X additional ones of the plurality of modulation symbols on a symbol by symbol basis to a phase rotation operation wherein the phase rotation is one of the first amount and the second amount determined by a corresponding bit in said wireless terminal identifier, where X is a positive integer.
10. The method of claim 9, wherein X is 12;
wherein N is equal to 16; and
wherein said plurality of modulation symbols convey an uplink information bit which is an acknowledgment signal.
11. The method of claim 9, wherein X is 5;
wherein N is equal to 16; and
wherein said plurality of modulation symbols convey 6 or 8 information bits of a dedicated control channel segment.
12. The method of claim 6, wherein the first N of the plurality of modulation symbols is the plurality of modulation symbols;
wherein the wireless terminal identifier is a K bit identifier;
wherein K is a positive integer less than or equal to N; and
wherein each of the N modulation symbols corresponds to a different one of the bits of the K bit identifier.
13. The method of claim 12, wherein N is 14;
wherein K is 16; and
wherein said plurality of modulation symbols convey a two information bit uplink state request.
14. The method of claim 6, wherein said scrambling and transmitting are performed by a wireless terminal; and
wherein said transmitting includes using OFDM tones to communicate said scrambled modulation symbols.
15. The method of claim 6, wherein said plurality of modulation symbols are indexed according to a predetermined modulation symbol to channel segment mapping arrangement;
wherein the bits in said wireless terminal identifier are indexed; and
wherein the plurality of modulation symbols is M modulation symbols, the wireless terminal identifier is a K bit identifier, where K and M are positive integers, M being greater than or equal to K, and where each different indexed bit of the K bit wireless terminal identifier corresponds to at most ceiling (MK) different modulation symbols of the M modulation symbols.
16. The method of claim 9, wherein said phase rotation operation is one of a phase shift of zero and 180 degrees.
17. The method of claim 6 wherein said wireless terminal identifier is a 16 bit wtScramblingID.
18. The method of claim 1, wherein said scrambling is applied to encoded modulation symbols used to communicate an uplink traffic acknowledgement signal.
19. The method of claim 1, wherein said scrambling is used for at least one of an uplink dedicated control channel, an uplink traffic acknowledgement channel, and an uplink state transition acknowledgement channel, and an uplink state request channel.
20. A wireless terminal comprising:
a scrambling module for scrambling a plurality of modulation symbols as a function of a wireless terminal identifier to produce scrambled modulation symbols; and
a transmission module for transmitting said scrambled modulation symbols.
21. The wireless terminal of claim 20, wherein said scrambling module includes:
a phase rotation module for subjecting said plurality of modulation symbols on a symbol by symbol basis to a phase rotation operation wherein each phase rotation is by an amount which is one of a plurality of different amounts, the amount of rotation applied to a particular one of the modulation symbols being determined by a corresponding N bits of said wireless terminal identifier where N is a positive integer.
22. The wireless terminal of claim 21, wherein said plurality of different amounts is 2N.
23. The wireless terminal of claim 22, wherein N is one.
24. The wireless terminal of claim 23, wherein zero and 180 degrees are the different amounts of phase rotation.
25. The wireless terminal of claim 20, wherein said scrambling module includes:
a phase rotation module for subjecting at least a first N of the plurality of modulation symbols on a symbol by symbol basis to a phase rotation operation wherein the phase rotation is one of a first and a second amount determined by a corresponding bit in said wireless terminal identifier.
26. The wireless terminal of claim 25, wherein said wireless terminal identifier is a K bit identifier, where K is a positive integer.
27. The wireless terminal of claim 26, wherein N=K.
28. The wireless terminal of claim 25, wherein said scrambling module further includes:
means for subjecting at least X additional ones of the plurality of modulation symbols on a symbol by symbol basis to a phase rotation operation wherein the phase rotation is one of the first and the second amount determined by a corresponding bit in said wireless terminal identifier, where X is a positive integer.
29. The wireless terminal of claim 25, further comprising:
stored uplink segment structure information identifying the number of indexed modulation symbols associated with different types of uplink segments to which modulation symbol scrambling is to be applied.
30. The wireless terminal of claim 25, further comprising:
corresponding bit identification information associating indexed modulation symbol positions within a segment to indexed wireless terminal identifier bits.
31. The wireless terminal of claim 29, wherein the different types of uplink segments include different numbers of modulation symbols.
32. The wireless terminal of claim 29, wherein the different types of uplink segments include at least two of an uplink traffic channel acknowledgement segment, an uplink dedicated control channel segment, an uplink state request channel segment, and an uplink state transition acknowledgment channel segment.
33. The wireless terminal of claim 25, wherein said wireless terminal identifier is a first scrambling identifier associated with a first active user identifier, said first active user identifier corresponding to a first base station sector attachment point.
34. The wireless terminal of claim 33, further comprising:
a stored second scrambling identifier associated with a second active user identifier, the second scrambling identifier being different than the first scrambling identifier, the second active user identifier corresponding to a second base station sector attachment point, said second base station sector attachment point being different from said first base station sector attachment point.
35. The wireless terminal of claim 25, further comprising:
an OFDM receiver for receiving scrambled downlink modulation symbols directed exclusively to the wireless terminal which have been scrambled independent of the wireless terminal identifier.
36. The wireless terminal of claim 35, further comprising:
a downlink unscrambling module for unscrambling said received scrambled downlink modulation symbols as a function base sector parameter information corresponding to a base station sector attachment point.
37. The wireless terminal of claim 25, further comprising:
a scrambling bypass module for bypassing modulation symbol scrambling operations on modulation symbols corresponding to at least some uplink segments.
38. The wireless terminal of claim 37, wherein the at least some uplink segments include at least one of an uplink access exchange channel segment, and uplink access signal timing control channel segment, and an uplink access signal power control channel segment.
39. A method of operating a base station comprising:
receiving OFDM symbols, each received OFDM symbol including a plurality of modulation symbols, said plurality of modulation symbols being received from a plurality of wireless terminals;
associating a first set of received modulation symbols with a first dedicated uplink channel segment, said first dedicated uplink channel segment being dedicated to a first wireless terminal having a first wireless terminal scrambling identifier;
associating a second set of received modulation symbols with a second dedicated uplink channel segment, said second dedicated uplink channel segment being dedicated to a second wireless terminal having a second wireless terminal scrambling identifier, said second wireless terminal identifier being different than said first wireless terminal scrambling identifier;
performing a first information recovery operation by processing said first set of received modulation symbols using said first wireless terminal scrambling identifier; and
performing a second information recovery operation by processing said second set of received modulation symbols using said second wireless terminal scrambling identifier.
40. The method of claim 39, wherein processing said first set of received modulation symbols using said first wireless terminal scrambling identifier includes performing an unscrambling operations as a function of the first wireless terminal scrambling identifier, and wherein processing said second set of received modulation symbols using said second wireless terminal scrambling identifier includes performing an unscrambling operation as a function of the second wireless terminal scrambling identifier.
41. The method of claim 40, wherein the unscrambling operation is performed for each received modulation symbol being processed and wherein the unscrambling operation applies, on a per modulation symbol basis, one of a plurality of different amounts of phase rotation.
42. The method of claim 41, wherein the different amounts of phase rotation are 0 degrees and 180 degrees.
43. The method of claim 41, wherein performing a first information recovery operation includes determining, for each received modulation symbol of the first set, the amount of phase rotation to be used in the unscrambling operation based on a bit of the first wireless terminal scrambling identifier which corresponds to the received modulation symbol being unscrambled, and wherein performing a second information recovery operation includes determining, for each received modulation symbol of the second set, the amount of phase rotation to be used in the unscrambling operation based on a bit of the second wireless terminal scrambling identifier which corresponds to the received modulation symbol being unscrambled.
44. The method of claim 41, wherein the first dedicated uplink segment and the second dedicated uplink segment are the same type of segment and convey the same information bit values but correspond to different sets of transmitted modulation symbols due the first and second wireless terminal scrambling identifiers being different.
45. The method of claim 44, wherein the type of first dedicated uplink control channel segment and second dedicated uplink control channel segment are one of an uplink traffic channel acknowledgement segment, an uplink dedicated control channel segment, an uplink state request channel segment, and an uplink state transition acknowledgment channel segment.
46. The method of claim 40, wherein said first set of received modulation symbols includes superposed signals from two different wireless terminals, one of the two different wireless terminals being the first wireless terminal and another one of the two different wireless terminals being a third wireless terminal, said third wireless terminal being different from said first wireless terminal, said third wireless terminal using a third wireless terminal scrambling identifier different from said first wireless terminal scrambling identifier, said third wireless terminal having erroneously transmitted modulation symbols into the first dedicated uplink control channel segment, the first information recovery operation further comprising:
performing a decoding operation using the first wireless terminal scrambling identifier to detect signals from the first wireless terminal and to treat signals from said third wireless terminal as interference.
47. A base station comprising:
a segment allocation module for allocating dedicated uplink segments to individual wireless terminals;
an OFDM receiver module for receiving OFDM symbols, each received OFDM symbol including a plurality of modulation symbols, said plurality of modulation symbols being received from a plurality of wireless terminals;
a segment recovery module for associating sets of received modulation symbols with dedicated uplink segments in a recurring uplink channel structure; and
an information recovery module for processing at least some of the sets of received modulation symbols corresponding to dedicated uplink segments using wireless terminal scrambling identifiers.
48. The base station of claim 47, wherein the dedicated uplink segments are segments dedicated to an individual wireless terminal for non-contention based uplink communications.
49. The base station of claim 47, further comprising:
stored base station assigned wireless terminal active user identifiers corresponding to each wireless terminal which is a current active user with respect to the base station; and
stored wireless terminal scrambling identifiers corresponding to each wireless terminal which is a current active user with respect to the base station.
50. The base station of claim 47, wherein the information recovery module includes an unscrambling sub-module which performs an unscrambling operation, on a per modulation symbol basis, for received modulation symbols associated with a segment as a function of a wireless terminal scrambling identifier associated with the segment.
51. The base station of claim 50, wherein the unscrambling sub-module applies, on a per modulation symbol basis, one of a plurality of different amounts of phase rotation.
52. The base station of claim 51, wherein the different amounts of phase rotation are 0 degrees and 180 degrees.
53. The base station of claim 50, wherein the unscrambling sub-module uses, for a received modulation symbol, a bit of the wireless terminal scrambling identifier, the bit having an indexed location in the wireless terminal scrambling identifier which corresponds, by a predetermined association, to an indexed location in the segment.
54. The base station of claim 47, wherein said at least some of the sets of received modulation symbols corresponds to at least one of an uplink dedicated control channel, an uplink traffic acknowledgement channel, and an uplink state transition acknowledgement channel, and an uplink state request channel.
55. The base station of claim 47, wherein said information recovery module includes a interference rejection module, said interference rejection module using a wireless terminal scrambling identifier associated with the segment to detect signals communicated via the segment from a wireless terminal to which the segment has been dedicated and which is using the wireless terminal scrambling identifier and to reject signals from any wireless terminal which erroneously transmits into the segment using another wireless terminal scrambling identifier, said another wireless terminal scrambling identifier being different from said wireless terminal scrambling identifier.
56. A computer readable medium embodying machine executable instructions for controlling a communications device to implement a communications method, the method comprising:
scrambling a plurality of modulation symbols as a function of a wireless terminal identifier to produce scrambled modulation symbols; and
transmitting said scrambled modulation symbols.
57. The computer readable medium of claim 56, further embodying machine executable instructions for:
subjecting said plurality of modulation symbols on a symbol by symbol basis to a phase rotation operation wherein each phase rotation is by an amount which is one of a plurality of different amounts as part of said scrambling, the amount of rotation applied to a particular one of the modulation symbols being determined by a corresponding N bits of said wireless terminal identifier where N is a positive integer.
58. The computer readable medium of claim 57, wherein said plurality of different amounts is 2N.
59. The computer readable medium of claim 58, wherein N is one.
60. The computer readable medium of claim 59, wherein zero and 180 degrees are the different amounts of phase rotation.
61. The computer readable medium of claim 56, further embodying instructions for:
subjecting at least a first N of the plurality of modulation symbols on a symbol by symbol basis to a phase rotation operation as part of said scrambling, wherein the phase rotation is one of a first and a second amount determined by a corresponding bit in said wireless terminal identifier, where N is a positive integer.
62. A computer readable medium embodying machine executable instructions which, when executed, control a base station to implement a communications method, the communications method comprising:
receiving OFDM symbols, each received OFDM symbol including a plurality of modulation symbols, said plurality of modulation symbols being received from a plurality of wireless terminals;
associating a first set of received modulation symbols with a first dedicated uplink channel segment, said first dedicated uplink channel segment being dedicated to a first wireless terminal having a first wireless terminal scrambling identifier;
associating a second set of received modulation symbols with a second dedicated uplink channel segment, said second dedicated uplink channel segment being dedicated to a second wireless terminal having a second wireless terminal scrambling identifier, said second wireless terminal identifier being different than said first wireless terminal scrambling identifier;
performing a first information recovery operation by processing said first set of received modulation symbols using said first wireless terminal scrambling identifier; and
performing a second information recovery operation by processing said second set of received modulation symbols using said second wireless terminal scrambling identifier.
63. The computer readable medium of claim 62 further embodying machine executable instructions for:
performing an unscrambling operations as a function of the first wireless terminal scrambling identifier as part of said step of processing said first set of received modulation symbols using said first wireless terminal scrambling identifier; and performing an unscrambling operation as a function of the second wireless terminal scrambling identifier as part of said step of processing said second set of received modulation symbols using said second wireless terminal scrambling identifier.
64. The computer readable medium of claim 63, wherein the unscrambling operation is performed for each received modulation symbol being processed, further embodying machine executable instructions for:
applying, on a per modulation symbol basis, one of a plurality of different amounts of phase rotation, as part of the unscrambling operation.
65. The computer readable medium of claim 64, wherein the different amounts of phase rotation are 0 degrees and 180 degrees.
66. The computer readable medium of claim 64 further embodying machine executable instructions for:
determining, for each received modulation symbol of the first set, the amount of phase rotation to be used in the unscrambling operation based on a bit of the first wireless terminal scrambling identifier which corresponds to the received modulation symbol being unscrambled as part of said step of performing a first information recovery operation; and
determining, for each received modulation symbol of the second set, the amount of phase rotation to be used in the unscrambling operation based on a bit of the second wireless terminal scrambling identifier which corresponds to the received modulation symbol being unscrambled as part of said step of performing a second information recovery operation.
67. A communications device comprising:
means for scrambling a plurality of modulation symbols as a function of a wireless terminal identifier to produce scrambled modulation symbols; and
means for transmitting said scrambled modulation symbols.
68. The communications device of claim 67, wherein said means for scrambling includes:
means for subjecting said plurality of modulation symbols on a symbol by symbol basis to a phase rotation operation wherein each phase rotation is by an amount which is one of a plurality of different amounts, the amount of rotation applied to a particular one of the modulation symbols being determined by a corresponding N bits of said wireless terminal identifier where N is a positive integer.
69. The communications device of claim 67, wherein said means for scrambling includes:
means for subjecting at least a first N of the plurality of modulation symbols on a symbol by symbol basis to a phase rotation operation wherein the phase rotation is one of a first and a second amount determined by a corresponding bit in said wireless terminal identifier, where N is a positive integer.
70. The communications device of claim 69, wherein said plurality of modulation symbols are indexed according to a predetermined modulation symbol to channel segment mapping arrangement;
wherein the bits in said wireless terminal identifier are indexed; and
wherein the plurality of modulation symbols is M modulation symbols, the wireless terminal identifier is a K bit identifier, where K and M are positive integers, M being greater than or equal to K, and where each different indexed bit of the K bit wireless terminal identifier corresponds to at most ceiling (MK) different modulation symbols of the M modulation symbols.
71. The communications apparatus of claim 69, wherein different types of uplink segments to which said scrambling a plurality of modulation symbols as a function of a wireless terminal identifier is applied include at least two of an uplink traffic channel acknowledgement segment, an uplink dedicated control channel segment, an uplink state request channel segment, and an uplink state transition acknowledgment channel segment.
72. A base station comprising:
means for receiving OFDM symbols, each received OFDM symbol including a plurality of modulation symbols, said plurality of modulation symbols being received from a plurality of wireless terminals;
means for associating a first set of received modulation symbols with a first dedicated uplink channel segment, said first dedicated uplink channel segment being dedicated to a first wireless terminal having a first wireless terminal scrambling identifier;
means for associating a second set of received modulation symbols with a second dedicated uplink channel segment, said second dedicated uplink channel segment being dedicated to a second wireless terminal having a second wireless terminal scrambling identifier, said second wireless terminal identifier being different than said first wireless terminal scrambling identifier;
means for performing a first information recovery operation by processing said first set of received modulation symbols using said first wireless terminal scrambling identifier; and
means for performing a second information recovery operation by processing said second set of received modulation symbols using said second wireless terminal scrambling identifier.
73. The base station of claim 72, wherein said means for processing said first set of received modulation symbols using said first wireless terminal scrambling identifier includes means for performing an unscrambling operations as a function of the first wireless terminal scrambling identifier, and wherein said means for processing said second set of received modulation symbols using said second wireless terminal scrambling identifier includes means for performing an unscrambling operation as a function of the second wireless terminal scrambling identifier.
74. The base station of claim 73, wherein the means for performing an unscrambling operation performs an unscrambling operation for each received modulation symbol of a segment being processed and wherein the unscrambling operation applies, on a per modulation symbol basis, one of a plurality of different amounts of phase rotation.
75. The base station of claim 74, wherein the different amounts of phase rotation are 0 degrees and 180 degrees.
76. The base station of claim 74, wherein said means for performing a first information recovery operation includes means for determining, for each received modulation symbol of the first set, the amount of phase rotation to be used in the unscrambling operation based on a bit of the first wireless terminal scrambling identifier which corresponds to the received modulation symbol being unscrambled, and wherein said means for performing a second information recovery operation includes means for determining, for each received modulation symbol of the second set, the amount of phase rotation to be used in the unscrambling operation based on a bit of the second wireless terminal scrambling identifier which corresponds to the received modulation symbol being unscrambled.
77. An apparatus operable in a communication system, the apparatus comprising:
a processor configured to:
scramble a plurality of modulation symbols as a function of a wireless terminal identifier to produce scrambled modulation symbols; and
transmit said scrambled modulation symbols.
78. The apparatus of claim 77, wherein the processor is configured to:
subject said plurality of modulation symbols on a symbol by symbol basis to a phase rotation operation, as part of said scramble operation, wherein each phase rotation is by an amount which is one of a plurality of different amounts, the amount of rotation applied to a particular one of the modulation symbols being determined by a corresponding N bits of said wireless terminal identifier where N is a positive integer.
79. The apparatus of claim 78, wherein said processor is configured such that said plurality of different amounts is 2N.
80. An apparatus operable in a communication system the apparatus comprising:
a processor configured to:
receive OFDM symbols, each received OFDM symbol including a plurality of modulation symbols, said plurality of modulation symbols being received from a plurality of wireless terminals;
associate a first set of received modulation symbols with a first dedicated uplink channel segment, said first dedicated uplink channel segment being dedicated to a first wireless terminal having a first wireless terminal scrambling identifier;
associate a second set of received modulation symbols with a second dedicated uplink channel segment, said second dedicated uplink channel segment being dedicated to a second wireless terminal having a second wireless terminal scrambling identifier, said second wireless terminal identifier being different than said first wireless terminal scrambling identifier;
perform a first information recovery operation by processing said first set of received modulation symbols using said first wireless terminal scrambling identifier; and
perform a second information recovery operation by processing said second set of received modulation symbols using said second wireless terminal scrambling identifier.
81. The apparatus of claim 80, wherein the processor is configured to perform an unscrambling operation as a function of the first wireless terminal scrambling identifier as part of processing said first set of received modulation symbols using said first wireless terminal scrambling identifier, and wherein the processor is configured to perform an unscrambling operation as a function of the second wireless terminal scrambling identifier as part of processing said second set of received modulation symbols using said second wireless terminal scrambling identifier.
82. The apparatus of claim 81, wherein the processor is configured to perform an unscrambling operation for each received modulation symbol being processed and wherein the unscrambling operation applies, on a per modulation symbol basis, one of a plurality of different amounts of phase rotation.
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 method of making edible substrates having consistent registration of an image disposed thereon, wherein said method comprises:
(a) providing an edible substrate sheet;
(b) providing an image source, wherein said image source comprises at least one image;
(c) providing a trigger pulse signal, wherein said trigger pulse signal relays the frequency of a process element;
(d) communicating the trigger pulse signal to an ink jet printer, wherein the ink jet printer uses the trigger pulse signal to determine when to dispose an image from said image source;
(e) disposing an image on said edible substrate sheet with said ink jet printer to form an image-disposed edible substrate sheet;
(f) separating a portion of said edible substrate sheet that comprises an image disposed thereon into an individual piece.
2. The method of claim 1, wherein said ink jet printer is a piezoelectric drop-on-demand ink jet printer.
3. The method of claim 1, wherein step (f) comprises separating a portion of the edible substrate sheet that comprises an image disposed thereon with a rotary cutter to form an individual piece.
4. The method of claim 1, wherein said process element is selected from the group consisting of cutter mold, carrier mold, forming device, cutting device, forming mold, cooking mold, and conveying device.
5. The method of claim 1, wherein said process element is used by an individual substrate processed.
6. The method of claim 1, wherein said edible substrate sheet is a dough sheet.
7. The method of claim 7, wherein said dough sheet is a fabricated snack dough sheet.
8. The method of claim 8, wherein said dough sheet comprises a material selected from the group consisting of potato, rice, corn, wheat, and combinations thereof.
9. The method of claim 7, wherein said individual piece of step (f) is thermally processed to form a fabricated snack chip.
10. The method of claim 1, wherein said edible substrate sheet comprises sugar.
11. The method of claim 11, wherein said edible substrate sheet is a candy film, fruit film, or a gum sheet.
12. The method of claim 1, wherein said image source comprises digitally stored images.
13. The method of claim 1, wherein said trigger pulse signal is processed through a signal processing unit to make it compatible with the ink jet printer.
14. The method of claim 1, further comprising providing a time delay to adjust the time of disposing an image relative to a trigger pulse signal.
15. A system for making edible substrates having consistent registration of an image disposed thereon, wherein said system comprises:
(a) an edible substrate sheet;
(b) a registration mark, wherein said registration mark is located on said edible substrate sheet;
(c) a sensor;
(d) a means to compare the sensed registration mark location versus the desired location;
(e) an algorithm to determine how to adjust the trigger pulse signal delay based on the comparison of (d); and
(f) a means to communicate the adjustment to an ink jet printer.
16. A dough sheet, wherein said dough sheet comprises:
(a) edible dough; and
(b) at least one registration mark.
17. The dough sheet of claim 16, wherein said dough sheet comprises potato.