Method and apparatus for data communication between a base station and a transponder
A method and system for data communication between a base station and at least one transponder via a high-frequency electromagnetic carrier signal onto which information packets are modulated. Each information packet has a header section, a middle section, and a trailer section. The header section can be provided in a forward link of a data communication between the base station and the transponders for controlling data communication. The header section is used in a return link of a data communication in order to transmit information from the transponder to the base station.
1. A method comprising:
transmitting a forward link having a forward-link header comprising at least one symbol for configuring a setting of a transponder;
receiving from the transponder a return link having a return-link header comprising information based on characteristics of the transponder;
analyzing the received return-link header to determine adjusted information for configuring the setting of the transponder;
modifying a subsequent symbol of the forward-link header in accordance with the adjusted information for configuring the setting of the transponder; and
transmitting to the transponder the modified subsequent symbol of the forward-link header.
2. The method of claim 1 , wherein the characteristics of the transponder comprise one or more of a resolution and a data transmission rate of the transponder.
3. The method of claim 1 , wherein transmitting the forward link comprises specifying a reference time for one or more of defining a system clock and setting a data communication rate of the transponder.
4. The method of claim 1 , wherein analyzing the received return-link header comprises determining clock information of the transponder based on a reference mark.
5. The method of claim 1 , wherein analyzing the received return-link header comprises determining a time separation based on a reference mark.
6. The method of claim 1 , wherein transmitting the forward link comprises specifying a reference time for modulation by the transponder.
7. The method of claim 1 , further comprising iteratively repeating the operations of the method.
8. A base station comprising:
a transceiver configured to:
transmit to a transponder a forward link having a forward-link header, the forward-link header comprising at least one symbol for configuring a setting of the transponder; and
receive from the transponder a return link having a return-link header, the return-link header comprising information based on characteristics of the transponder;
an analysis device configured to analyze the received return-link header to determine adjusted information for configuring the setting of the transponder; and
an adjusting device configured to modifying a subsequent symbol of the forward-link header in accordance with the adjusted information for configuring the setting of the transponder;
wherein the transceiver is further configured to transmit the modified subsequent symbol of the forward-link header to the transponder.
9. The base station of claim 8 , wherein the characteristics of the transponder comprise one or more of a resolution and a data transmission rate of the transponder.
10. The base station of claim 8 , wherein transmitting the forward link comprises specifying a reference time for one or more of defining a system clock and setting a data communication rate of the transponder.
11. The base station of claim 8 , wherein the analysis device is further configured to determine clock information of the transponder based on a reference mark.
12. The base station of claim 8 , wherein the analysis device is further configured to determine a time separation based on a reference mark.
13. The base station of claim 8 , further comprising a control unit configured to iteratively repeat the operations.
14. A circuit configured to:
transmit to a transponder a forward link having a forward-link header comprising at least one symbol, the forward-link header comprising information for configuring a setting of the transponder;
receive from the transponder a return link having a return-link header comprising information based on characteristics of the transponder;
analyze the received return-link header to determine adjusted information for configuring the setting of the transponder;
modify a subsequent symbol of the forward-link header in accordance with the adjusted information for configuring the setting of the transponder; and
transmit to the transponder the modified subsequent symbol of the forward-link header.
15. The circuit of claim 14 , wherein the characteristics of the transponder comprise one or more of a resolution and a data transmission rate of the transponder.
16. The circuit of claim 14 , wherein transmitting the forward link comprises specifying a reference time for one or more of defining a system clock and setting a data communication rate of the transponder.
17. The circuit of claim 14 , wherein analyzing the received return-link header comprises determining clock information of the transponder based on a reference mark.
18. The circuit of claim 14 , wherein analyzing the received return-link header comprises determining a time separation based on a reference mark.
19. The circuit of claim 14 , wherein transmitting the forward link comprises specifying a reference time for modulation by the transponder.
20. The circuit of claim 14 , wherein the circuit is further configured to iteratively repeat the operations.