Preamble Designs for Sub-1GHz Frequency Bands
First Claim
1. A system comprising:
- a first preamble generator module configured to generate a first preamble for a first packet, wherein the first packet is a single-user packet, and wherein the first preamble includes (i) a first short training field, (ii) a first long training field, (iii) a first signal field, and (iv) a second signal field, wherein the first signal field and the second signal field conform to a Very High Throughput format specified in one or more 802.11 standards set forth by Institute of Electrical and Electronics Engineers;
a second preamble generator module configured to generate a second preamble for a second packet, wherein the second preamble is longer than the first preamble, wherein the second packet is (i) a multi-user packet formatted as a multi-user packet or (ii) a single-user packet formatted as multi-user packet, and wherein the Second preamble includes (i) a second short training field, (ii) a second long training field, (iii) a third signal field, and (iv) a fourth signal field, wherein the third signal field and the fourth signal field conform to the Very High Throughput format; and
a modulation module configured to modulate at least one of (i) the first signal field and (ii) the second signal field of the first preamble differently than at least one of (i) the third signal field and (ii) the fourth signal field of the second preamble.
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Accused Products
Abstract
A system including a first preamble generator module configured to generate a first preamble for a first packet, which is a single-user packet. The first preamble includes a first short training field, a first long training field, a first signal field, and a second signal field. A second preamble generator module generates a second preamble for a second packet, which is a multi-user packet formatted as a multi-user packet or a single-user packet formatted as a multi-user packet. The second preamble is longer than the first preamble. The second preamble includes a second short training field, a second long training field, a third signal field, and a fourth signal field. A modulation module modulates at least one of the first signal field and the second signal field of the first preamble differently than at least one of the third signal field and the fourth signal field of the second preamble.
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Citations
25 Claims
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1. A system comprising:
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a first preamble generator module configured to generate a first preamble for a first packet, wherein the first packet is a single-user packet, and wherein the first preamble includes (i) a first short training field, (ii) a first long training field, (iii) a first signal field, and (iv) a second signal field, wherein the first signal field and the second signal field conform to a Very High Throughput format specified in one or more 802.11 standards set forth by Institute of Electrical and Electronics Engineers; a second preamble generator module configured to generate a second preamble for a second packet, wherein the second preamble is longer than the first preamble, wherein the second packet is (i) a multi-user packet formatted as a multi-user packet or (ii) a single-user packet formatted as multi-user packet, and wherein the Second preamble includes (i) a second short training field, (ii) a second long training field, (iii) a third signal field, and (iv) a fourth signal field, wherein the third signal field and the fourth signal field conform to the Very High Throughput format; and a modulation module configured to modulate at least one of (i) the first signal field and (ii) the second signal field of the first preamble differently than at least one of (i) the third signal field and (ii) the fourth signal field of the second preamble. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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13. (canceled)
Specification