Fine timing for high throughput packets

• US 9,253,742 B1
• Filed: 11/29/2007
• Issued: 02/02/2016
• Est. Priority Date: 11/29/2007
• Status: Expired due to Fees

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Sun, Qinfang, Shi, Kai
• Primary Examiner(s): Pollack, Melvin H
• Application Number:
  US11/947,749
• Time in Patent Office: 2,987 Days
• Field of Search: 370/350
• US Class Current: 1/1
• CPC Class Codes: H04L 7/042 Detectors therefor, e.g. correlators, state machines digital correlators in general G06F17/15
• CPC Class Codes: H04W 56/00 Synchronisation arrangements

Abstract

Improved methods of decoding data symbols of a high throughput (HT) data field in a mixed mode packet are provided. In one embodiment, first and second data symbols of the HT data field can be decoded using timing information derived from a legacy header of the mixed mode packet. In another embodiment, the first data symbol of the HT data field can be decoded using timing information derived from a legacy header of the mixed mode packet, whereas the second data symbol of the HT data field can be decoded using approximately half of the tones of the HT long training field in the mixed mode packet. Subsequent data symbols of the HT data field can be decoded using all tones of the HT long training field in the received mixed mode packet.

Claims

1. A method of decoding data symbols of a high throughput (HT) data field in a mixed mode packet, the method comprising:

decoding a first data symbol and a second data symbol of the HT data field using timing information derived solely from a legacy header of the mixed mode packet; and

decoding subsequent data symbols of the HT data field using fine timing information derived from an HT long training field in the mixed mode packet.

2. A method of decoding data symbols of a high throughput (HT) data field in a received mixed mode packet, the method comprising:

decoding a first data symbol of the HT data field using timing information derived from a legacy header of the mixed mode packet;

decoding a second data symbol of the HT data field using approximately half of a plurality of tones of an HT long training field in the mixed mode packet; and

decoding subsequent data symbols of the HT data field using all of the plurality of tones of the HT long training field in the received mixed mode packet.