System and method for retransmission of data
View Patent ↗A received RF signal can include data information intended for transmission over a wireless communication link. The data information of the signal can be processed at a node to produce overhead bits supporting a serial transmission of the data information over a communication medium to another node. For example, the data information of the received signal and overhead bits can be combined or framed according to a serial transport protocol for transmission over the communication medium. This technique of mapping or framing the data information into a serial transport protocol is used to more efficiently transmit the data over the communication medium to a target receiver, where the original RF signal can be reconstructed.
1. A method comprising:
receiving data information representing a digitized version of a radio frequency signal comprising at least one radio frequency channel to be transmitted over a wireless link; and
combining at least a portion of the data information and overhead bits generated from the data information, wherein the at least a portion of the data information and the overhead bits are combined according to a transport protocol for transmission of the at least a portion of the data information and the overhead bits over a transport communication medium;
wherein the digitized version of the radio frequency signal is generated by down converting the radio frequency signal to an intermediate frequency version of the radio frequency signal and digitizing at least a portion of the intermediate frequency version of the radio frequency signal.
2. The method of claim 1 , wherein the at least a portion of the data information and the overhead bits are combined according to the transport protocol for transmission of the at least a portion of the data information and overhead bits in a serial stream over the transport communication medium.
3. The method of claim 1 , further comprising:
receiving at least a portion of the combined data information and overheard bits according to the selected protocol; and
processing the at least a portion of the combined data information and overhead bits to reproduce the radio frequency signal as originally received.
4. The method of claim 3 , processing the at least a portion of the combined data information and overhead bits to reproduce the radio frequency signal as originally received comprises extracting a digitized portion of the at least a portion of the intermediate frequency version of the radio frequency signal, digital-to-analog converting the extracted digitized portion of the at least a portion of the intermediate frequency version of the radio frequency signal to produce a reproduction of the at least a portion of the intermediate frequency version of the radio frequency signal; and upconverting the reproduction of the at least a portion of the intermediate frequency version of the radio frequency signal.
5. The method of claim 1 , wherein the transport protocol comprises at least one of: a SONET (Synchronous Optical Network) protocol and a quasi-SONET protocol.
6. The method of claim 1 , wherein the transport communication medium comprises at least one optical fiber.
7. The method of claim 1 , wherein the overhead bits comprise at least one of a time stamp, parity information, status information, control information, configuration information, and path trace information.
8. The method of claim 1 , wherein combining the at least a portion of the data information and the overhead bits generated from the data information comprises framing the at least a portion of the data information and the overhead bits.
9. A system comprising:
a first device to receive a signal from at least one second device, the signal comprising at least one radio frequency channel, wherein the first device generates data information representing a digitized version of at least a portion of the signal;
wherein the first device generates overhead bits associated with transmission of the data information over a communication medium and combines the overhead bits with at least a portion of the data information according to a transport protocol for transmission over the communication medium to a third device; and wherein the first device generates the data information by down converting the signal to an intermediate frequency version the signal and then digitizing at least a portion of the intermediate frequency version of the signal.
10. The system of 9 , further comprising a patch panel disposed in the first device for selecting which of multiple third devices the combined overhead bits and the at least a portion of the data information will be directed.
11. The system of claim 9 , wherein the first device comprises a framer to combine the overhead bits and the at least a portion of the data information.
12. A device comprising:
a digitizer to generate data information representing a digitized version of at least a portion of a radio frequency signal comprising at least one radio frequency channel to be transmitted over a wireless link; and
a framer to combine at least a portion of the data information and overhead bits generated from the data information;
wherein the at least a portion of the data information and the overhead bits are combined according to a transport protocol for transmission of the at least a portion of the data information and the overhead bits over a transport communication medium to a second device; and
wherein the digitizer comprises a down converter to down convert the radio frequency signal to an intermediate frequency version of the radio frequency signal, wherein the digitizer digitizes at least a portion of the intermediate frequency version of the radio frequency signal in order to generate the data information.
13. The device of claim 12 , wherein the second device receives a second radio frequency signal generates second data information comprising a digitized version of the second radio frequency signal, combines at least a portion of the second data information and second overhead bits generated from the second data information for transmission to the second_device
wherein the device comprises an interface to receive the combined the at least a portion of the second data information and the second overhead bits and to process the at least a portion of the second combined data information and second overhead bits to reproduce the second radio frequency signal as originally received.
14. The device of claim 12 , wherein the device comprises a hub and the second device comprises a remote antenna node.
15. The device of claim 12 , wherein the overhead bits comprise at least one of a time stamp, parity information, status information, control information, configuration information, and path trace information.
16. Apparatus comprising:
means for receiving data information representing a digitized version of a radio frequency signal comprising at least one radio frequency channel to be transmitted over a wireless link; and
means for combining at least a portion of the data information and overhead bits generated from the data information, wherein the at least a portion of the data information and the overhead bits are combined according to a transport protocol for transmission of the at least a portion of the data information and the overhead bits over a transport communication medium;
wherein the digitized version of the radio frequency signal is generated by down converting the radio frequency signal to an intermediate frequency version of the radio frequency signal and digitizing at least a portion of the intermediate frequency version of the radio frequency signal.