Optical fiber-based distributed antenna systems, components, and related methods for monitoring and configuring thereof

• US 8,649,684 B2
• Filed: 07/29/2011
• Issued: 02/11/2014
• Est. Priority Date: 02/03/2009
• Status: Active Grant

• Current Assignee: Corning Optical Communications LLC (Corning Incorporated)
• Original Assignee: Corning Cable Systems LLC (Corning Incorporated)
• Inventors: Casterline, Raymond A., Coakley, Gary L., Cotfas, Vladimir M., Sadowski, Eric M., Sauer, Michael, Webb, Dale A., Kapp, Steven C., Palanisamy, Rajeshkannan, Peters, David R., Webb, Michael B.
• Primary Examiner(s): Liu, Li
• Application Number:
  US13/194,429
• Publication Number:
  US 20120134666A1
• Time in Patent Office: 928 Days
• Field of Search: 398 9- 25, 398/42, 398/43, 398/70, 398115-117, 455/1, 455/41.2, 370466-503
• US Class Current: 398/116
• CPC Class Codes: H04B 10/0795 Performance monitoring; Measurement of transmission parameters
• CPC Class Codes: H04B 10/25753 Distribution optical network, e.g. between a base station and a plurality of remote units
• CPC Class Codes: H04B 10/25754 Star network topology
• CPC Class Codes: H04B 10/25756 Bus network topology

Abstract

Optical fiber-based wireless systems and related components and methods are disclosed. The systems support radio frequency (RF) communications with clients over optical fiber, including Radio-over-Fiber (RoF) communications. The systems may be provided as part of an indoor distributed antenna system (IDAS) to provide wireless communication services to clients inside a building or other facility. The communications can be distributed between a head end unit (HEU) that receives carrier signals from one or more service or carrier providers and converts the signals to RoF signals for distribution over optical fibers to end points, which may be remote antenna units (RAUs). A microprocessor-based control system or systems may also be employed. The control systems may include one or more microprocessors or microcontrollers in one or more of the components of the system that execute software instructions to control the various components and provide various features for the optical fiber-based distributed antenna systems.

Claims

1. A wireless communication system, comprising:

communication components, comprising;

a downlink base transceiver station (BTS) interface configured to receive downlink electrical radio frequency (RF) signals from at least one BTS on at least one communication downlink;

at least one optical interface module (OIM) configured to;

receive and convert the downlink electrical RF signals from the downlink BTS interface into downlink Radio-over-Fiber (RoF) signals on the at least one communication downlink; and

receive and convert uplink RoF signals from at least one remote antenna unit (RAU) into uplink electrical RF signals on at least one communication uplink;

an uplink BTS interface configured to receive and communicate the uplink electrical RF signals from the at least one communication uplink to the at least one BTS; and

a controller configured to execute software to communicate communication operations to the communication components over a communication bus comprising the at least one communication downlink without interruption of the downlink electrical RF signals and downlink RoF signals on the at least one communication downlink, wherein

the controller is configured to discover the presence at least one of the communication components and to periodically rediscover the presence at least one of the communication components to ensure that the at least one of the communication components are operational,

the controller is configured to enumerate point information from the at least one of the communication components discovered, and

the communications operations comprise the controller configured to receive at least one point from at least one of the communication components and wherein the at least one point includes an identity of the communication component and a point identification (ID), and wherein the controller is configured to receive flagbits to provide characteristic information regarding the at least one point.

2. The wireless communication system of claim 1, wherein the communication bus further comprises the at least one communication uplink.

3. The wireless communication system of claim 1, wherein the controller is further configured to execute software to communicate communication operations over the communication bus without interruption of the uplink electrical RF signals and uplink RoF signals on the at least one communication uplink.

4. The wireless communication system of claim 1, wherein the controller is further configured to store configuration information for the communication components in a datastore coupled to the controller.

5. The wireless communication system of claim 4, wherein the controller is further configured to communicate the configuration information to the communication components.

6. The wireless communication system of claim 5, wherein the communication components are further configured to preserve the configuration information over an interruption of the controller.

7. The wireless communication system of claim 6, wherein the interruption of the controller is comprised from the group consisting of a failure of the controller, a reboot of the controller, a power down of the controller, a loading of software to be executed by the controller, and a reloading of software to be executed by the controller.

8. The wireless communication system of claim 1, wherein the communication components can be replaced without interrupting the controller.

9. The wireless communication system of claim 1, wherein the controller is further configured to store the at least one point in a datastore coupled to the controller.

10. The wireless communication system of claim 1, wherein the controller is further configured to set the at least one point in the at least one of the communication components.

11. The wireless communication system of claim 1, wherein the flagbits indicate at least one of the following:

if the at least one point is alarmable;

whether the at least one point is static or dynamic; and

whether the at least one point is writeable.

12. The wireless communication system of claim 1, wherein the flagbits indicate if the at least one point is associated with the communication uplink or communication downlink, alarmable, includes a value, includes a setpoint, includes a threshold, includes a minimum threshold, includes a maximum threshold, includes hysteresis, includes a minimum hysteresis, includes a maximum hysteresis, includes an offset, or includes a stepsize.

13. The wireless communication system of claim 1, wherein the communications operations comprise the controller configured to monitor at least one of the communication components.

14. The wireless communication system of claim 13, wherein the controller is further configured to receive monitoring information regarding the at least one of the communication components.

15. The wireless communication system of claim 14, wherein the controller is further configured to communicate the monitoring information over a network and to a remote system.

16. The wireless communication system of claim 14, wherein the controller is further configured to determine a status of the at least one of the communication component from the monitoring information.

17. The wireless communication system of claim 14, wherein the controller is further configured to determine an aging of the at least one of the communication component from the monitoring information.

18. The wireless communication system of claim 14, wherein the controller is further configured to determine if the at least one of the communication component has failed from the monitoring information.

19. The wireless communication system of claim 14, wherein the controller is further configured to monitor the at least one of the communication components by receiving at least one point from the at least one of the communication components.

20. The wireless communication system of claim 1, wherein the communications operations comprise the controller configured to receive alarm information from at least one of the communication components.

21. The wireless communication system of claim 20, wherein the controller is further configured to report the alarm information over a network.

22. The wireless communication system of claim 20, wherein the controller is further configured to report the alarm information to a remote system.

23. The wireless communication system of claim 20, wherein the alarm information includes whether the controller or the at least one of the communication components is responsible to calculate an alarm for the at least one of the communication components.

24. The wireless communication system of claim 20, wherein the controller is further configured to periodically receive the alarm information and to periodically publish the alarm information to a network.

25. The wireless communication system of claim 20, wherein the controller is further configured to predict the failure of at least one of the communications components based on receiving the alarm information from at least one of the communication components defining at least one condition indicative of a predictive failure in the at least one of the communication components.

26. The wireless communication system of claim 1, wherein the controller is further configured to receive client requests regarding at least one of the communication components from a client and to provide responses regarding the client requests relating to the at least one of the communication components to the client.

27. The wireless communication system of claim 26, wherein the client requests are comprised from the group consisting of status for the communication components, activation of the communication components, deactivation of the communication components, activation of a BTS band for the downlink BTS interface, deactivation of the BTS band for the downlink BTS interface, monitoring information for the communication components, alarm information for the communication components, log information for the communication components, configuration for the communication components, a gain setting to adjust BTS input power to the downlink BTS interface, properties information, installation information, and service notes.

28. The wireless communication system of claim 27, wherein the controller is further configured display at least one point regarding at least one of the communication components on a the user interface and to host a web server for receiving the client requests.