Method for Routing Outgoing and Incoming Data in an NFC Chipset

US 20070263595A1
Filed: 05/10/2007
Published: 11/15/2007
Est. Priority Date: 05/10/2006
Status: Active Grant

First Claim

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1. A method for routing data in a chipset comprising at least one host processor and an RFID-type contactless data send/receive interface, the method comprising:

in response to a command for opening a data path sent by a source point located in the host processor and designating a destination point located in the contactless data send/receive interface, defining a data path linking the source point to the destination point by allocating to the data path a routing channel number and by saving in a routing table the routing channel number and routing parameters comprising at least one identifier of the source point and one identifier of the destination point;

sending to the destination point data supplied by the source point by encapsulating the data in a frame having a header field comprising the routing channel number; and

upon receiving data encapsulated in a frame having a header field comprising the routing channel number, searching for a destination point of the data in the routing table by using the routing channel number as an index to select the destination point.

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Abstract

A method for routing data in a chipset comprising at least one host processor and an RFID-type contactless data send/receive interface includes, in response to a command for opening a data path sent by a source point located in the host processor and designating a destination point located in the contactless data send/receive interface, defining a data path linking the source point to the destination point by allocating to the data path a routing channel number and by saving in a routing table the routing channel number and routing parameters comprising at least one identifier of the source point and one identifier of the destination point, and sending to the destination point data supplied by the source point by encapsulating the data in a frame having a header field comprising the routing channel number.

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22 Claims

1. A method for routing data in a chipset comprising at least one host processor and an RFID-type contactless data send/receive interface, the method comprising:
- in response to a command for opening a data path sent by a source point located in the host processor and designating a destination point located in the contactless data send/receive interface, defining a data path linking the source point to the destination point by allocating to the data path a routing channel number and by saving in a routing table the routing channel number and routing parameters comprising at least one identifier of the source point and one identifier of the destination point;
  
  sending to the destination point data supplied by the source point by encapsulating the data in a frame having a header field comprising the routing channel number; and
  
  upon receiving data encapsulated in a frame having a header field comprising the routing channel number, searching for a destination point of the data in the routing table by using the routing channel number as an index to select the destination point.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
- - 2. The method of claim 1, implemented in a chipset, wherein the contactless data send/receive interface is configurable according to several operating modes and according to several contactless communication protocols, the method further comprising:
    - in response to a command for opening a data path sent by a source point located in the host processor and designating a destination point located in the contactless data send/receive interface, opening a data path between the source point and the destination point by allocating to the data path a routing channel number and by saving in the routing table the routing channel number and routing parameters comprising an operating mode parameter of the contactless data send/receive interface and a contactless communication protocol parameter; and
      
      configuring the contactless data send/receive interface to send data in a contactless data transmission channel by using the operating mode and contactless communication protocol parameters contained in the routing table for the data path through which the data to be sent has been received.
  - 3. The method of claim 1, implemented in a chipset comprising at least two host processors, wherein the routing table is also used to open a data path between the two host processors.
  - 4. The method of claim 1, further comprising providing commands for creating data paths comprising routing parameters and configuration parameters for configuring the contactless data send/receive interface to be saved in the routing table.
  - 5. The method of claim 1, wherein the routing table is filled or emptied dynamically when data paths having a source point located in a host processor are created or closed.
  - 6. The method of claim 1, further comprising pre-saving in the routing table data paths having a source point located in a host processor.
  - 7. The method of claim 1, implemented in a chipset comprising at least two host processors, and wherein, when data is received by the contactless data send/receive interface via a contactless data transmission channel, at least one recipient host processor of the data is identified using at least as determination criteria the operating mode and the contactless communication protocol used by the contactless data send/receive interface to create the contactless data transmission channel through which the data is received.
  - 8. The method of claim 7, further comprising:
    - pre-saving in the routing table data paths having a source point located in the contactless data send/receive interface, and for each of these data paths at least one identifier of a destination point, an operating mode parameter of the contactless data send/receive interface and a contactless communication protocol parameter; and
      
      when data is received by the contactless data send/receive interface via a contactless data transmission channel, determining at least one destination point of the data by searching in the routing table for a data path having an operating mode parameter and a contactless communication protocol parameter corresponding to the operating mode and contactless communication protocol parameters used by the contactless data send/receive interface to create the contactless data transmission channel through which the data is received.
  - 9. The method of claim 1, wherein source points or destination points saved in the routing table are services executed by a host processor.
  - 10. The method of claim 1, wherein the routing parameters stored in the routing table further comprise an identifier of a point of notification which must receive a copy of the data sent to the destination point.
  - 11. The method of claim 1, implemented in a chipset in which a host processor is a secure circuit such as a SIM card integrated circuit.

12. A device for sending/receiving data comprising an RFID-type contactless data send/receive interface, a controller, and at least one input/output port to link the contactless data send/receive interface to a host processor, the controller being configured to:
- in response to a command for opening a data path sent by a source point located in a host processor and designating a destination point located in the contactless data send/receive interface, open a data path between the source point and a destination point by allocating to the data path a routing channel number and by saving in a routing table the routing channel number and routing parameters comprising at least one identifier of the source point and one identifier of the destination point; and
  
  upon receiving data encapsulated in a frame having a header field comprising the routing channel number, search for a destination point of the data in the routing table using the routing channel number as index to select the destination point.
- View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
- - 13. The device of claim 12, wherein:
    - the contactless data send/receive interface is configurable according to several operating modes and according to several contactless communication protocols;
      
      the controller configured to, in response to a command for opening a data path sent by a source point located in the host processor and designating a destination point located in the contactless data send/receive interface, open a data path between the source point and the destination point by allocating to the data path a routing channel number and by saving in the routing table the routing channel number and routing parameters comprising an operating mode parameter of the contactless data send/receive interface and a contactless communication protocol parameter; and
      
      the contactless data send/receive interface being configured to send data in a contactless data transmission channel by using the operating mode and contactless communication protocol parameters contained in the routing table for the data path through which the data to be sent have been received.
  - 14. The device of claim 12, comprising at least two input/output ports and wherein the controller also uses the routing table to open a data path between two host processors.
  - 15. The device of claim 12, wherein the controller is configured to decode commands for creating data paths comprising routing parameters and configuration parameters for configuring the contactless data send/receive interface, and to save in the routing table the routing and configuration parameters present in the commands.
  - 16. The device of claim 12, wherein the controller is configured to dynamically fill or empty the routing table when data paths having a source point located in a host processor are created or closed.
  - 17. The device of claim 12, wherein the host processor is configured to pre-save in the routing table data paths having a source point located in a host processor.
  - 18. The device of claim 12, wherein the controller or the contactless data send/receive interface is configured to, when data are received by the contactless data send/receive interface via a contactless data transmission channel, determine a destination point of the data by using as determination criteria the operating mode and the contactless communication protocol used by the contactless data send/receive interface to create the contactless data transmission channel through which the data are received.
  - 19. The device of claim 12, wherein the controller is configured to:
    - pre-save in the routing table data paths having a source point located in the contactless data send/receive interface, and for each of these data paths, at least one identifier of a destination point, one operating mode parameter of the contactless data send/receive interface and one contactless communication protocol parameter; and
      
      when data is received by the contactless data send/receive interface via a contactless data transmission channel, determine at least one destination point of the data by searching in the routing table for a data path having an operating mode parameter and a contactless communication protocol parameter corresponding to the operating mode and contactless communication protocol parameters used by the contactless data send/receive interface to create the contactless data transmission channel through which the data are received.
  - 20. The device of claim 12, wherein source points or destination points saved in the routing table are services executed by a host processor.
  - 21. The device of claim 12, wherein the routing parameters stored in the routing table further comprise an identifier of a point of notification which must receive a copy of the data sent to the destination point.
  - 22. The device of claim 12, linked to a host processor formed by a secure circuit such as a SIM card integrated circuit.

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Current Assignee
Verimatrix Incorporated (Verimatrix SA)
Original Assignee
INSIDE Contactless
Inventors
Charrat, Bruno

Granted Patent

US 7,905,419 B2
Time in Patent Office

Days
Field of Search
US Class Current

370/351
CPC Class Codes

H04L 45/00 Routing or path finding of ...

H04L 45/54 Organization of routing tables

Method for Routing Outgoing and Incoming Data in an NFC Chipset

First Claim

7 Assignments

0 Petitions

Accused Products

Abstract

59 Citations

22 Claims

Specification

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Method for Routing Outgoing and Incoming Data in an NFC Chipset

First Claim

7 Assignments

Subscription Required

Subscription Required

0 Petitions

Subscription Required

Accused Products

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Abstract

59 Citations

22 Claims

Specification

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Solutions

Use Cases

Quick Links