METHOD FOR TRANSMITTING AND RECEIVING DATA IN NFC

• US 20080280558A1
• Filed: 05/06/2008
• Published: 11/13/2008
• Est. Priority Date: 05/07/2007
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: ARUNAN, Thenmozhi
• Granted Patent: US 8,059,683 B2
• Time in Patent Office: Days
• US Class Current: 455/41.1
• CPC Class Codes: H04W 28/06 Optimizing the usage of the radio link, e.g. header compression, information sizing , discarding information system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365
• CPC Class Codes: H04W 80/02 Data link layer protocols

Abstract

A data transmission/reception method in Near Field Communications (NFC) for enhancing data throughput between at least an initiator device and a target device. The data transmission/reception method typically includes initiating a communication between an initiator and a target that perform NFC, aggregating a plurality of data packet units to be transmitted in order to form an aggregated frame, and transmitting the aggregated frame to a counterpart NFC device.

Claims

1. A data transmission/reception method in Near Field Communications (NFC), the method comprising:

(a) initiating a communication between an initiator and a target that perform NFC;

(b) aggregating a plurality of data packet units for transmission to form an aggregated frame; and

(c) transmitting the aggregated frame to a counterpart NFC device.

2. The data transmission/reception method of claim 1, wherein the counterpart NFC device comprises one of the target and the initiator.

3. The data transmission/reception method of claim 1, wherein the initiation of a communication comprises transmitting and receiving configuration parameters regarding the aggregation of the data packet units.

4. The data transmission/reception method of claim 1, wherein the initiation of a communication in (a) comprises setting a maximum value for the number of data packet units that can be aggregated.

5. The data transmission/reception method of claim 4, wherein said maximum value for the number of data packets is set by the initiator.

6. The data transmission/reception method of claim 4, wherein said maximum value for the number of data packets is set by the target.

7. The data transmission/reception method of claim 4, wherein said maximum value for the number of data packets is set one of the initiator and the target having the lowest capacity for transceiving data packets.

8. The data transmission/reception method of claim 1, wherein the aggregated frame comprises an identifier of a frame type indicating whether a data frame included in the aggregated frame comprises an Aggregated Information (AI) frame or an Aggregated Unnumbered Information (AUI) frame.

9. The data transmission/reception method of claim 1, wherein the aggregated frame includes a Cyclic Redundancy Check (CRC) field having a CRC value calculated for all the data packet units included in the aggregated frame.

10. The data transmission/reception method of claim 1, wherein the aggregated frame comprises an aggregated header including overheads of the data packet units included in the aggregated frame.

11. The data transmission/reception method of claim 1, wherein the aggregation of the data packet units and the transmission of the aggregated frame are performed by the initiator that initiates NFC.

12. The data transmission/reception method of claim 11, wherein the aggregation of the data packet units comprises aggregating data packet units for transmission from a same connection.

13. The data transmission/reception method of claim 11, wherein the aggregation of the data packet units comprises aggregating data packet units for transmission from different connections.

14. The data transmission/reception method of claim 1, wherein the aggregation of the data packet units and the transmission of the aggregated frame are performed by the target operating by a Radio Frequency (RF) field generated by the initiator as a power source.

15. The data transmission/reception method of claim 14, wherein the aggregation of the data packet units comprises aggregating data packet units for transmission from the same connection.

16. The data transmission/reception method of claim 14, wherein the aggregation of the data packet units comprises aggregating data packet units for transmission from different connections.

17. The data transmission/reception method of claim 14, further comprising receiving an Information (I) frame from the initiator prior to the aggregation of the data packet units,

wherein the aggregated frame is transmitted as a response frame responding to the I frame received from the initiator.

18. The data transmission/reception method of claim 8, wherein each of the AI frame and the AUI frame comprises a Destination Service Access Point (DSAP) field, a Source Service Access Point (SSAP) field, a control field, and a data information field.

19. The data transmission/reception method of claim 18, wherein the data information field of the AI frame comprises a transmission sequence number of a first inserted data packet unit.

20. The data transmission/reception method of claim 19, wherein the data information field of the AI frame further comprises a value indicating a response sequence number corresponding to a transmission sequence number of a last inserted data packet unit.

21. The data transmission/reception method of claim 18, wherein each of the AI frame and the AUI frame from the same logical connection comprises plural aggregated data packet units and comprises a length information field indicating a length of each data packet unit in front of each data packet unit.

22. The data transmission/reception method of claim 18, wherein each of the AI frame and the AUI frame from different logical connections comprises a Logical