SYSTEMS AND METHODS FOR IP COMMUNICATION OVER A DISTRIBUTED ANTENNA SYSTEM TRANSPORT

• US 20100177759A1
• Filed: 09/09/2009
• Published: 07/15/2010
• Est. Priority Date: 01/13/2009
• Status: Active Grant

• Current Assignee: CommScope Technologies, LLC (CommScope Holding Company, Inc.)
• Original Assignee: ADC Telecommunications Incorporated (TE Connectivity Limited)
• Inventors: Stuart, Steven B., Hedin, John M., Cannon, Jeffrey J., Fischer, Larry G.
• Granted Patent: US 8,213,401 B2
• Time in Patent Office: Days
• US Class Current: 370/345
• CPC Class Codes: H04W 88/085 Access point devices with remote components

Abstract

Systems and methods for IP communication over a distributed antenna system transport are provided. In one embodiment, a method for providing Ethernet connectivity over a distributed antenna system comprises receiving internet protocol (IP) formatted data from an internet protocol device coupled to a remote unit of a distributed antenna system; sampling wireless radio frequency (RF) signals received at the remote unit to produce digitized RF samples; generating a serial data stream for output to a host unit of the distributed antenna system, the serial data stream further comprising a multiple-timeslot communication frame providing a first partition of bandwidth for transporting the digitized RF samples and a second partition of bandwidth for implementing an Ethernet pipe for transporting the IP formatted data.

Claims

1. A distributed antenna system, the system comprising:

a host unit;

at least one remote unit for wirelessly communicating with one or more subscriber units, the at least one remote unit coupled to the host unit over a point-to-point communication link, wherein the at least one remote unit receives uplink radio frequency (RF) signals from the one or more subscriber units and samples the uplink radio frequency signals to generate digitized RF data, the at least one remote unit further comprising an Ethernet interface for receiving Internet Protocol (IP) formatted data; and

an internet protocol device coupled to the Ethernet interface;

wherein the at least one remote unit outputs a serial data stream to the host unit, the serial data stream comprising a bandwidth having a first partition for transporting the digitized RF data to the host unit and a second partition implementing an Ethernet pipe for transporting the IP formatted data received via the Ethernet interface;

wherein the serial data stream comprises a multiple-timeslot communication frame, the first partition for transporting the digitized RF data to the host unit comprises a first partition of bits within a timeslot of the multiple-timeslot communication frame and the second partition implementing an Ethernet pipe comprises a second partition of bits within the timeslot.

2. The distributed antenna system of claim 1, wherein the at least one remote unit multiplexes the IP formatted data received via the Ethernet interface and the digitized RF data into timeslots of the serial data stream.

3. The distributed antenna system of claim 1, the at least one remote unit further comprising

at least one digital to analog radio frequency transceiver module for generating a digital radio frequency signal from an analog radio frequency signal received from the one or more subscriber units;

and

a serial radio frequency module coupled to receive the digital radio frequency signal from the at least one digital to analog radio frequency transceiver module, the serial radio frequency module performing multiplexing in the time domain to route both the IP formatted data and the digitized RF data into time slots within frames communicated to the host unit.

4. The distributed antenna system of claim 3, wherein the digitized RF signal is a baseband digital radio frequency signal.

5. The distributed antenna system of claim 1, wherein the Ethernet interface for receiving the IP formatted data comprises an eight-position eight-contact modular plug.

6. The distributed antenna system of claim 1, wherein the second partition implementing an Ethernet pipe further comprises at least one timeslot of the multiple-timeslot communication frame that does not carry digitized RF signal data.

7. The distributed antenna system of claim 1, the host unit further comprising:

a host serial radio frequency module receiving the serial stream from the at least one remote unit the host serial radio frequency module de-multiplexes the digitized RF data and the IP formatted data from the serial stream and routes the IP formatted data to an Ethernet interface at the host unit.

8. The distributed antenna system of claim 1, wherein the at least one remote unit inputs a downlink serial data stream from the host unit, the downlink serial data stream comprising a bandwidth having a first partition for transporting downlink digitized RF data to the at least one remote unit and a second partition implementing an Ethernet pipe for transporting the downlink IP formatted data for output via the Ethernet interface.

9. A method for providing Ethernet connectivity over a distributed antenna system, the method comprising:

receiving internet protocol (IP) formatted data from an internet protocol device coupled to a remote unit of a distributed antenna system;

sampling wireless radio frequency (RF) signals received at the remote unit to produce digitized RF samples; and

generating a serial data stream for output to a host unit of the distributed antenna system, the serial data stream further comprising a multiple-timeslot communication frame providing a first partition of bandwidth for transporting the digitized RF samples and a second partition of bandwidth for implementing an Ethernet pipe for transporting the IP formatted data;

wherein generating the serial data stream further comprises multiplexing the digitized RF data into a first set of bits within a timeslot of the multiple-timeslot communication frame and multiplexing the IP formatted data into a second set of bits within said timeslot of the multiple-timeslot communication frame.

10. The method of claim 9, wherein generating the serial data stream further comprises:

multiplexing the IP data with the digitized RF samples into timeslots of the multiple-timeslot communication frame.

11. The method of claim 9, wherein receiving internet protocol IP formatted data further comprises receiving the IP formatted data via an eight-position eight-contact modular plug.

12. The method of claim 9, wherein generating the serial data stream further comprises:

multiplexing the IP formatted data into a second set of timeslots of the multiple-timeslot communication frame, wherein the second set of timeslots do not carry digitized RF signal data.

13. The method of claim 9, further comprising:

receiving the serial stream at the host unit;

de-multiplexing the digitized RF data and the IP formatted data from the serial stream; and

routing the IP formatted data to an Ethernet interface at the host unit.

14. A remote unit for a distributed antenna system, the remote unit comprising:

at least one digital to analog radio frequency transceiver module for generating a digital radio frequency signal from an analog radio frequency signal received from one or more subscriber units;

at least one internet protocol device; and

a serial radio frequency module coupled to receive the digital radio frequency signal from the at least one digital to analog radio frequency transceiver module, the serial radio frequency module further comprising an Ethernet interface for communicating Internet Protocol (IP) formatted data with the at least one internet protocol device;

wherein the serial radio frequency module communicating with a host unit via an upstream serial data stream and a downstream serial data stream;

the upstream serial data stream comprising a multiple-timeslot communication frame having a first partition for transporting the digital radio frequency signal and a second partition implementing an Ethernet pipe for transporting upstream IP formatted data received via the Ethernet interface;

wherein the serial radio frequency module multiplexes IP formatted data received via the Ethernet interface and the digital radio frequency signal into timeslots of the upstream serial data stream;

wherein the first partition for transporting the digital radio frequency signal comprises a first set of bits within a timeslot of the multiple-timeslot communication frame and the second partition implementing an Ethernet pipe comprises a second set of bits within the timeslot.

15. The remote unit of claim 14, wherein the serial radio frequency module demultiplexes IP formatted data from timeslots of the downstream serial data stream and outputs downstream IP formatted data to the Ethernet interface.

16. The remote unit of claim 14, wherein the second partition implementing an Ethernet pipe further comprises a timeslot of the multiple-timeslot communication frame that does not carry the digital radio frequency signal.

17. The remote unit of claim 14, wherein the Ethernet interface comprises an eight-position eight-contact modular plug.

18. The remote unit of claim 14, wherein the serial radio frequency module demultiplexes downlink IP formatted data and a downlink digital radio frequency signal from timeslots of a downlink serial data stream.

19. A method for providing Ethernet connectivity over a distributed antenna system, the method comprising:

receiving a downlink serial data stream at a remote unit of a distributed antenna system from a host unit of the distributed antenna system, the downlink serial data stream comprising a multiple-timeslot communication frame providing a first partition of bandwidth for transporting digitized radio frequency (RF) samples and a second partition of bandwidth for implementing an Ethernet pipe for transporting internet protocol (IP) formatted data;

demultiplexing the digitized RF samples from a first set of bits within a timeslot of a multiple-timeslot communication frame; and

demultiplexing the IP formatted data from a second set of bits within said timeslot of the multiple-timeslot communication frame;

communicating the IP formatted data to an internet protocol device coupled to the remote unit of the distributed antenna system;

converting the digitized RF samples to an analog signal for wireless transmission from the remote unit.

20. The method of claim 19, further comprising:

de-multiplexing the digitized RF samples and the IP formatted data from the serial stream; and

routing the IP formatted data to an Ethernet interface at the remote unit.

21. The method of claim 19, further comprising:

demultiplexing the IP formatted data from a second set of timeslots of the multiple-timeslot communication frame, wherein the second set of timeslots do not carry digitized RF samples.