Bitrate efficient transport through distributed antenna systems

• US 10,020,851 B2
• Filed: 06/19/2017
• Issued: 07/10/2018
• Est. Priority Date: 06/11/2014
• Status: Active Grant

• Current Assignee: CommScope Technologies, LLC (CommScope Holding Company, Inc.)
• Original Assignee: CommScope Technologies, LLC (CommScope Holding Company, Inc.)
• Inventors: Uyehara, Lance K., Zavadsky, Dean, Golubovic, Boris
• Primary Examiner(s): Rachedine, Mohammed
• Application Number:
  US15/626,689
• Publication Number:
  US 20170288744A1
• Time in Patent Office: 386 Days
• Field of Search: None
• CPC Class Codes: H04B 10/25752 Optical arrangements for wireless networks
• CPC Class Codes: H04B 7/024 Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
• CPC Class Codes: H04L 25/03305 Joint sequence estimation and interference removal joint detection of several desired signals H04L25/03331
• CPC Class Codes: H04L 69/08 Protocols for interworking; Protocol conversion
• CPC Class Codes: H04L 69/323 in the physical layer [OSI layer 1]
• CPC Class Codes: H04W 88/085 Access point devices with remote components

Abstract

An antenna unit includes a first physical layer processor configured to receive a first downlink physical layer signal from an upstream device and to convert first downlink physical layer signal into first downlink higher layer data units; a higher layer processor configured to convert first downlink higher layer data units into second downlink higher layer data units; a second physical layer processor configured to generate a second downlink physical layer signal from second downlink higher layer data units; and a radio frequency conversion module configured to convert second downlink physical layer signal into radio frequency signals for communication using an antenna. Communication between upstream device and antenna unit using first downlink physical layer signal having first downlink higher layer data units has a lower data rate than would communication between upstream device and antenna unit using second downlink physical layer signal having second downlink higher layer data units.

Claims

1. An antenna unit comprising:

a first physical layer processor configured to receive a first downlink physical layer signal from an upstream device and to convert the first downlink physical layer signal into first downlink higher layer data units;

a higher layer processor configured to convert the first downlink higher layer data units into second downlink higher layer data units;

a second physical layer processor configured to generate a second downlink physical layer signal from the second downlink higher layer data units; and

a radio frequency conversion module configured to convert the second downlink physical layer signal into radio frequency signals for communication using an antenna;

wherein communication between the upstream device and the antenna unit using the first downlink physical layer signal having the first downlink higher layer data units has a lower data rate than would communication between the upstream device and the antenna unit using the second downlink physical layer signal having the second downlink higher layer data units.

2. The antenna unit of claim 1, wherein the upstream device is at least one of a radio access network interface and a baseband unit.

3. The antenna unit of claim 1, wherein the upstream device is a host unit in a distributed antenna system.

4. The antenna unit of claim 1, wherein the antenna is at least one of coupled to the antenna unit and integrated into the antenna unit.

5. The antenna unit of claim 1, wherein the downlink radio access technology physical layer signal includes I/Q modulated samples.

6. The antenna unit of claim 1, wherein the second downlink physical layer signal is a Long Term Evolution physical layer signal;

and

wherein the second downlink higher layer data units are Long Term Evolution medium access control layer protocol data units.

7. An antenna unit comprising:

a radio frequency conversion module configured to convert radio frequency signals received using an antenna into a first uplink physical layer signal;

a first physical layer processor configured to generate first uplink higher layer data units from the first uplink physical layer signal;

a higher layer processor configured to convert the first uplink higher layer data units into second uplink higher layer data units; and

a second physical layer processor configured to convert second uplink higher layer data units into an uplink transport data stream and to communicate the uplink transport data stream to an upstream device;

wherein communication between the antenna unit and the upstream device using the uplink transport data stream having the second uplink higher layer data units has a lower data rate than would communication between the antenna unit and the upstream device using the first uplink physical layer signal having the first uplink higher layer data units.

8. The antenna unit of claim 7, wherein the upstream device is at least one of a radio access network interface and a baseband unit.

9. The antenna unit of claim 7, wherein the upstream device is a host unit in a distributed antenna system.

10. The antenna unit of claim 7, wherein the antenna is at least one of coupled to the antenna unit and integrated into the antenna unit.

11. The antenna unit of claim 7, wherein the first uplink physical layer signal includes I/Q modulated samples.

12. The antenna unit of claim 7, wherein the first uplink physical layer signal is a Long Term Evolution physical layer signal;

and

wherein the first uplink higher layer data units are Long Term Evolution medium access control layer protocol data units.

13. A system comprising:

a radio access network interface;

at least one remote antenna unit communicatively coupled to the radio access network interface across a first communication link;

wherein the radio access network interface is configured to communicate a first downlink physical layer signal to the at least one remote antenna unit across the first communication link;

wherein the at least one remote antenna unit is configured to;

receive the first downlink physical layer signal from the radio access network interface;

convert the first downlink physical layer signal into first downlink higher layer data units;

convert the first downlink higher layer data units into second downlink higher layer data units;

generate a second downlink physical layer signal from the second downlink higher layer data units; and

convert the second downlink physical layer signal into radio frequency signals for communication using an antenna;

wherein communication between the radio access network interface and the at least one remote antenna unit using the first downlink physical layer signal having the first downlink higher layer data units has a lower data rate than would communication between the radio access network interface and the antenna unit using the second downlink physical layer signal having the second downlink higher layer data units.

14. The system of claim 13, wherein the antenna is at least one of coupled to the at least one remote antenna unit and integrated into the at least one remote antenna unit.

15. The system of claim 13, wherein at least a first digital communication link of the at least one digital communication link is transported across a medium that is a Category building cabling.

16. The system of claim 13, wherein the digital communication link is implemented using Ethernet physical layer devices.

17. The system of claim 13, further comprising:

a host unit communicatively coupled between the radio access network interface and the at least one antenna unit, the host unit configured to route the first downlink physical layer signal from the radio access network interface to the at least one remote antenna unit.

18. A system comprising:

a radio access network interface;

at least one remote antenna unit communicatively coupled to the radio access network interface across a first communication link;

wherein the radio access network interface is configured to receive an uplink transport data stream from the at least one remote antenna unit across the first communication link;

wherein the at least one remote antenna unit is configured to;

convert radio frequency signals received using an antenna into a first uplink physical layer signal;

generate first uplink higher layer data units from the first uplink physical layer signal;

convert the first uplink higher layer data units into second uplink higher layer data units;

convert the second uplink higher layer data units into an uplink transport data stream;

communicate the uplink transport data stream to the radio access network interface;

wherein communication between the at least one remote antenna unit and the radio access network interface using the uplink transport data stream having the second uplink higher layer data units has a lower data rate than would communication between the at least one remote antenna unit and the radio access network interface using the first uplink physical layer signal having the first uplink higher layer data units.

19. The system of claim 18, wherein the antenna is at least one of coupled to the at least one remote antenna unit and integrated into the at least one remote antenna unit.

20. The system of claim 18, wherein at least a first digital communication link of the at least one digital communication link is transported across a medium that is a Category building cabling.

21. The system of claim 18, wherein the digital communication link is implemented using Ethernet physical layer devices.

22. The system of claim 18, wherein the radio access network interface is further configured to combine multiple uplink transport data streams received from a plurality of remote antenna units including the at least one remote antenna unit.

23. The system of claim 18, further comprising:

a host unit communicatively coupled between the radio access network interface and the at least one antenna unit, the host unit configured to combine multiple uplink transport data streams received from a plurality of remote antenna units including the at least one remote antenna unit.

24. The system of claim 23, wherein the host unit is configured to combine the multiple uplink transport data streams received from the plurality of antenna units using at least one of majority logic and weighted combining.

25. The system of claim 23, wherein the host unit is configured to combine the multiple uplink transport data streams received from the plurality of antenna units based on quality metrics received from the plurality of antenna units.

26. A method for efficiently transporting wireless network information though a system, comprising:

receiving a first downlink physical layer signal from an upstream device at a remote antenna unit;

converting the first downlink physical layer signal into first downlink higher layer data units at the remote antenna unit;

converting the first downlink higher layer data units into second downlink higher layer data units at the remote antenna unit;

generating a second downlink physical layer signal from the second downlink higher layer data units at the remote antenna unit; and

converting the second downlink physical layer signal into radio frequency signals for communication using an antenna at the remote antenna unit;

wherein communication between the upstream device and the remote antenna unit using the first downlink physical layer signal having the first downlink higher layer data units has a lower data rate than would communication between the upstream device and the remote antenna unit using the second downlink physical layer signal having the second downlink higher layer data units.

27. The method of claim 26, further comprising:

wherein the upstream device is at least one of a radio access network interface and a baseband unit; and

communicating the first downlink physical layer signal to the remote antenna unit from the at least one of the radio access network interface and the baseband unit.

28. The method of claim 26, wherein receiving a first downlink physical layer signal from the upstream device at the remote antenna unit occurs using Ethernet physical layer devices.

29. A method for efficiently transporting wireless network information through a system, comprising:

converting radio frequency signals received using an antenna at a remote antenna unit into a first uplink physical layer signal at the remote antenna unit;

generating first uplink higher layer data units from the first uplink physical layer signal at the remote antenna unit;

converting the first uplink higher layer data units into second uplink higher layer data units at the remote antenna unit;

converting the second uplink higher layer data units into an uplink transport data stream at the remote antenna unit; and

communicating the uplink transport data stream to an upstream device at the remote antenna unit;

wherein communication between the remote antenna unit and the upstream device using the uplink transport data stream having the second uplink higher layer data units has a lower data rate than would communication between the remote antenna unit and the upstream device using the first uplink physical layer signal having the first uplink higher layer data units.

30. The method of claim 29, further comprising:

wherein the upstream device is at least one of a radio access network interface and a baseband unit; and

communicating the uplink transport data stream from the remote antenna unit to the at least one of the radio access network interface and the baseband unit.

31. The method of claim 29, wherein communicating the uplink transport data stream to the upstream device from the remote antenna unit occurs using Ethernet physical layer devices.