APPARATUS AND METHOD FOR NOTIFYING PACKET INFORMATION USING START FRAME DELIMITER

• US 20130010809A1
• Filed: 05/07/2010
• Published: 01/10/2013
• Est. Priority Date: 05/07/2010
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Choi, Hyun-Kuk, Heo, Chang-Ryong, Lee, Seok-Yong, Kim, Sae-Rome
• Granted Patent: US 8,891,559 B2
• Time in Patent Office: Days
• US Class Current: 370/474
• CPC Class Codes: H04L 12/56 Packet switching systems
• CPC Class Codes: H04L 25/0262 Arrangements for detecting the data rate of an incoming signal
• CPC Class Codes: H04L 27/345 Modifications of the signal space to allow the transmission of additional information
• CPC Class Codes: H04L 7/041 using special codes as synchronising signal
• CPC Class Codes: H04W 4/185 by embedding added-value information into content, e.g. geo-tagging

Abstract

An apparatus for notifying packet information using a start frame delimiter (SFD) comprises: a SFD transmission unit which generates an SFD code and transmits a packet by positioning the generated SFD code in a position corresponding to specific additional information to notify the specific additional information; and a SFD reception unit which receives the packet from the SFD transmission unit, detects the position of the SFD code positioned within the packet, and detects the additional information corresponding to the detected position.

Claims

1. An apparatus for delivering packet information by using a start frame delimiter, the apparatus comprising:

an SFD transmission unit for generating a start frame delimiter (SFD) code, and locating the generated SFD code at a position corresponding to particular supplementary information and transmitting a packet, in order to notify the particular supplementary information; and

an SFD reception unit for receiving the packet from the SFD transmission unit, detecting a position of the SFD code located in the received packet, and detecting supplementary information corresponding to the detected position of the SFD code.

2. The apparatus as claimed in claim 1, wherein the SFD transmission unit comprises:

an SFD code generator for generating an SFD code;

a garbage generator for generating garbage data for discriminating a position of the SFD code from another position of the SFD code;

a supplementary information mapping table for storing different pieces of supplementary information depending on a position of the SFD code; and

a supplementary information addition controller for mapping the different pieces of supplementary information according to the position of the SFD code.

3. The apparatus as claimed in claim 2, wherein the supplementary information mapping table is previously defined, is shared by the SFD transmission unit and the SFD reception unit, and is capable of changing the supplementary information under agreement of the SFD transmission unit and the SFD reception unit.

4. The apparatus as claimed in claim 1, wherein the SFD reception unit comprises:

a preamble detector for detecting a preamble field corresponding to a previous field of the SFD in order to recognize a time point of reception of an SFD field;

an SFD code matching filter for identifying the position of the SFD code received from the SFD transmission unit, and identifying supplementary information mapped to the position of the SFD code; and

an SFD detector for detecting a first start point of the SFD field and a point of completion of the SFD code, and calculating a time value corresponding to the point of the completion of the SFD code by using the first start point of the SFD field and the point of the completion of the SFD code.

5. The apparatus as claimed in claim 4, wherein the SFD code matching filter identifies the mapped supplementary information through a supplementary information mapping table.

6. A method for delivering packet information by using a start frame delimiter, the method comprising:

generating a start frame delimiter (SFD) code;

generating garbage data in order to discriminate a position of the SFD code from another position of the SFD code;

controlling the position of the generated SFD code in order to map supplementary information intended to be transmitted; and

transmitting a packet including the controlled SFD code.

7. The method as claimed in claim 6, wherein controlling of the position of the generated SFD code comprises changing a time point of detecting a correlation value of the SFD code by differently including the garbage data before or after the SFD code in order to map supplementary information desired by a user.

8. A method for receiving packet information by using a start frame delimiter, the method comprising:

detecting a preamble field corresponding to a previous field of the start frame delimiter (SFD) in order to recognize a time point of reception of an SFD field;

detecting a position of an SFD code included in a received packet;

identifying supplementary information mapped to the detected position of the SFD code; and

analyzing the identified supplementary information.

9. The method as claimed in claim 8, wherein identifying of the supplementary information comprises identifying the supplementary information corresponding to information on the detected position of the SFD code through a supplementary information mapping table shared by a transmission unit and a reception unit.