Wide area transport networks for mobile radio access networks and methods of use

• US 8,761,141 B2
• Filed: 12/31/2012
• Issued: 06/24/2014
• Est. Priority Date: 05/04/2012
• Status: Active Grant

• Current Assignee: E-Blink SA
• Original Assignee: E-Blink
• Inventors: Leroudier, Frederic
• Primary Examiner(s): Sheikh, Ayaz
• Assistant Examiner(s): AGA, SORI A
• Application Number:
  US13/732,273
• Publication Number:
  US 20130294253A1
• Time in Patent Office: 540 Days
• Field of Search: None
• US Class Current: 370/338
• CPC Class Codes: H04L 25/02 Details ; arrangements for supplying electrical power along data transmission lines systems for transmitting signals via power distribution lines H04B3/54
• CPC Class Codes: H04L 5/0001 Arrangements for dividing the transmission path duplexing H04L5/14; multiplexing of different sources on one path H04J
• CPC Class Codes: H04W 24/00 Supervisory, monitoring or testing arrangements
• CPC Class Codes: H04W 28/0247 based on conditions of the access network or the infrastructure network central resource management H04W28/16
• CPC Class Codes: H04W 48/12 using downlink control channel
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 88/085 Access point devices with remote components

Abstract

Wide area transport networks for mobile Radio Access Networks, and methods of use are provided herein. An exemplary wide area transport network may include a plurality of network segments that include at least one wireline network and at least one wireless network communicatively coupled with one another. Each of the plurality of network segments may be configured to transmit at least one of a plurality of signals communicated between a baseband module and a wireless transceiver.

Claims

1. A wide area transport network, comprising a plurality of network segments that comprise at least one wireline network and at least one wireless network communicatively coupled with one another, each of the plurality of network segments being configured to transmit at least one of a plurality of signals communicated between at least one baseband module and at least one wireless transceiver of a mobile wireless network, the plurality of signals corresponding to a digital fronthaul data flow between the at least one baseband module and the at least one wireless transceiver, at least one segment being configured to separate the fronthaul data flow into radio signal information, control protocol information, and user data flow and to transmit the radio signal information as radio frequency carrier signals and to transmit the control protocol information and the user data flow using digital communication methods, wherein the radio signal information is transmitted across the wide area transport network in an analog format while the control protocol information and user data flow are transmitted across the wide area transport network in a digitally encoded format.

2. The network according to claim 1, wherein the at least one wireline network comprises any of one or more fiber rings, one or more fiber spurs, and combinations thereof and wherein the at least one wireless network comprises single point to point links, daisy-chained point to point links, wireless point to point rings, and multiple hubbed point to point links and combinations thereof.

3. The network according to claim 1, wherein the plurality of signals comprises any of (a) radio signal information transmitted as radio frequency carrier signals, (b) control protocol information, (c) user data flow, and (d) a digital fronthaul data flow which comprises a multiplex of digitized samples of (a), and of (b), and (c), and any combination of digitized samples of (a), (b), and (c).

4. The network according to claim 1, wherein the at least one baseband module is communicatively coupled with the at least one wireline network and the wireless transceiver is communicatively coupled with the at least one wireless network.

5. The network according to claim 1, wherein a fronthaul module receives a digital fronthaul data flow and demultiplexes the digital fronthaul data flow into radio signal information, control protocol information, and user data flow and wherein the radio signal information is transformed into a Radio Frequency carrier signal.

6. The network according to claim 5, wherein the fronthaul module is communicatively coupled to the wireless transceiver and multiplexes radio signal information, control protocol information from the mobile wireless transceiver, and user data flow into a digital fronthaul data flow for output to the baseband module or another wireless transceiver.

7. The network according to claim 3, wherein the wide area transport network comprises one or more public network segments having resources dedicated to transporting the fronthaul data flow.

8. The network according to claim 1, wherein the at least one baseband module outputs radio signal information coded as radio frequency carrier signals, control protocol information, and user data flow and the wireless transceiver receives the radio signal information, control protocol information, and user data flow.

9. The network according to claim 8, wherein a first network segment of the plurality of network segments disposed between the at least one baseband module and the wireless transceiver converts the radio signal information coded as radio frequency carrier signals, control protocol information, and user data flow into a digital fronthaul data flow and a second network segment of the plurality of network segments disposed between the at least one baseband module and the wireless transceiver converts the digital fronthaul data flow back into the radio signal information coded as radio frequency carrier signals, control protocol information, and user data flow.

10. The network according to claim 9, wherein the at least one baseband module outputs the plurality of signals as an analog radio frequency signal and one or more fronthaul modules transmit the radio frequency signals to one or more wireless transceivers without reconverting and remultiplexing the radio frequency signals into a digital fronthaul flow.

11. The network according to claim 1, wherein the at least one wireline network comprises a fiber hub that is communicatively coupled to a plurality of wireless transceivers via one or more fronthaul modules, one of which being a wireless fronthaul module.

12. The network according to claim 1, wherein the Radio Frequency signals are processed using techniques based on radio access technologies used in the mobile wireless network.

13. The network according to claim 1, utilizing synchronization within a network node to increase synchronization precision between the control and radio frequency signal data flows processed by the network node.

14. A method, comprising transmitting fronthaul data flow across a wide area transport network that communicatively couples at least one baseband module and at least one wireless endpoint within a mobile wireless network, the wide area transport network comprising a plurality of network segments that comprise at least one wireline network and at least one wireless network communicatively coupled with one another, the fronthaul data flow being demultiplexed, processed and remultiplexed by fronthaul modules that may be coupled communicatively with mobile wireless transceivers of the mobile wireless network, at least one segment being configured to separate the fronthaul data flow into radio signal information, control protocol information, and user data flow, the radio signal information being transmitted as radio frequency carrier signals on at least one segment of the wide area transport network, according to key performance indicators of the mobile wireless network, and the control protocol information and user data flows being transported using digital communication methods.

15. The method according to claim 14, wherein the radio frequency carrier signals transporting the radio signal information of the fronthaul data flow are processed using radio access technologies used in the mobile wireless network.

16. The method according to claim 15, wherein the radio signal information, control protocol information, and user data flow are multiplexed into a digital fronthaul data flow on at least one segment of the wide area transport network.

17. The method according to claim 16, wherein the radio signal information is an analog signal that comprises a plurality of radio frequency carriers that correspond to the radio signal information used by the mobile transceivers to which the fronthaul module is communicatively coupled.

18. The method according to claim 16, wherein the control protocol information and user data flow are encoded using a digital data transmission protocol.

19. The method according to claim 14, further comprising outputting fronthaul data flow by the at least one wireline network, the fronthaul data flow comprising radio signal information, control protocol information, and user data flow;

and receiving the radio signal information, control protocol information, and user data flow at a wireless transceiver endpoint.

20. The method according to claim 14, further comprising transporting the fronthaul data flow over a public network using dedicated resources of that network.