Method and apparatus for saving power by using signal field of preamble
First Claim
1. An apparatus for communications, comprising:
- a first circuit configured to define a first signal field by altering a second signal field, wherein the alteration is based on at least one identifier, and wherein the alteration comprises;
dividing the second signal field into a plurality of sub-fields, andinserting a bit sequence corresponding to the at least one identifier between the plurality of subfields;
a second circuit configured to generate a checksum for the first signal field; and
a transmitter configured to transmit a packet comprising the second signal field with the checksum generated for the first signal field therein.
1 Assignment
0 Petitions
Accused Products
Abstract
Certain aspects of the present disclosure relate to a technique for power saving at mobile stations in Very High Throughput (VHT) systems using signal field bits of a preamble with a limited transmission overhead. The present disclosure proposes a method of indicating to a destination through a preamble cyclic redundancy check (CRC) checksum that the destination may be the intended destination of a transmission packet. The present disclosure also proposes a method of indicating to a destination through a preamble CRC that the destination may not be the intended destination of a transmission packet. In this case, decoding of the received packet can be terminated in order to save power at a receiving device.
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Citations
79 Claims
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1. An apparatus for communications, comprising:
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a first circuit configured to define a first signal field by altering a second signal field, wherein the alteration is based on at least one identifier, and wherein the alteration comprises; dividing the second signal field into a plurality of sub-fields, and inserting a bit sequence corresponding to the at least one identifier between the plurality of subfields; a second circuit configured to generate a checksum for the first signal field; and a transmitter configured to transmit a packet comprising the second signal field with the checksum generated for the first signal field therein. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for communications, comprising:
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defining a first signal field by altering a second signal field, wherein the alteration is based on at least one identifier, and wherein the alteration comprises; dividing the second signal field into a plurality of sub-fields, and inserting a bit sequence corresponding to the at least one identifier between the plurality of subfields; generating a checksum for the first signal field; and transmitting a packet comprising the second signal field with the checksum generated for the first signal field therein. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. An apparatus for communications, comprising:
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means for defining a first signal field by altering a second signal field based on at least one identifier, wherein the alteration comprises; dividing the second signal field into a plurality of sub-fields; and inserting a bit sequence corresponding to the at least one identifier between the plurality of subfields; means for generating a checksum for the first signal field; and means for transmitting a packet comprising the second signal field with the checksum generated for the first signal field therein. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
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40. A computer-program product for communications, comprising a non-transitory computer-readable medium encoded with instructions executable to:
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define a first signal field by altering a second signal field, wherein the alteration is based on at least one identifier, and wherein alteration comprises; dividing the second signal field into a plurality of sub-fields, and inserting the at least one identifier between the plurality of subfields; generate a checksum for the first signal field; and transmit a packet comprising the second signal field with the checksum generated for the first signal field therein.
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41. An access point, comprising:
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at least one antenna; a first circuit configured to define a first signal field by altering a second signal field, wherein the alteration is based on at least one identifier, and wherein the alteration comprises; dividing the second signal field into a plurality of sub-fields, and inserting a bit sequence corresponding to the at least one identifier between the plurality of subfields; a second circuit configured to generate a checksum for the first signal field; and a transmitter configured to transmit, via the at least one antenna, a packet comprising the second signal field with the checksum generated for the first signal field therein.
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42. An apparatus for communications, comprising:
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a receiver configured to receive a packet comprising a first signal field with a checksum therein; a first circuit configured to define a second signal field by altering the first signal field, wherein the alteration is based on at least one identifier, and wherein the wherein the alteration comprises; dividing the first signal field into a plurality of sub-fields; and inserting a bit sequence corresponding to the at least one identifier between the plurality of subfields; a second circuit configured to generate a checksum for the second signal field; and a third circuit configured to compare the generated checksum with the received checksum, and to determine that the packet is associated with the at least one identifier if the generated checksum matches the received checksum. - View Dependent Claims (43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53)
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54. A method for communications, comprising:
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receiving a packet comprising a first signal field with a checksum therein; defining a second signal field by altering the first signal field, wherein the alteration is based on at least one identifier, and wherein the alteration comprises; dividing the first signal field into a plurality of sub-fields, and inserting a bit sequence corresponding to the at least one identifier between the plurality of subfields; generating a checksum for the second signal field; comparing the generated checksum with the received checksum; and determining that the packet is associated with the at least one identifier if the generated checksum matches the received checksum. - View Dependent Claims (55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65)
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66. An apparatus for communications, comprising:
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means for receiving a packet comprising a first signal field with a checksum therein; means for defining a second signal field by altering the first signal field based on at least one identifier, wherein the alteration comprises; dividing the first signal field into a plurality of sub-fields, and inserting a bit sequence corresponding to the at least one identifier between the plurality of subfields; means for generating a checksum for the second signal field; means for comparing the generated checksum with the received checksum; and means for determining that the packet is associated with the at least one identifier if the generated checksum matches the received checksum. - View Dependent Claims (67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77)
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78. A computer-program product for communications, comprising a non-transitory computer-readable medium encoded with instructions executable to:
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receive a packet comprising a first signal field with a checksum therein; define a second signal field by altering the first signal field, wherein the alteration is based on at least one identifier, and wherein the alteration comprises; dividing the first signal field into a plurality of sub-fields, and inserting a bit sequence corresponding to the at least one identifier between the plurality of subfields; generate a checksum for the second signal field; compare the generated checksum with the received checksum; and determine that the packet is associated with the at least one identifier if the generated checksum matches the received checksum.
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79. An access terminal, comprising:
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at least one antenna; a receiver configured to receive, via the at least one antenna, a packet comprising a first signal field with a checksum therein; a first circuit configured to define a second signal field by altering the first signal field, wherein the alteration is based on at least one identifier, and wherein the alteration comprises; divide the first signal field into a plurality of sub-fields and insert a bit sequence corresponding to the at least one identifier between the plurality of subfields; a second circuit configured to generate a checksum for the second signal field; and a third circuit configured to compare the generated checksum with the received checksum, and to determine that the packet is associated with the at least one identifier if the generated checksum matches the received checksum.
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Specification