DATA TRANSPORT IN A VIRTUALIZED DISTRIBUTED ANTENNA SYSTEM

• US 20190082243A1
• Filed: 07/18/2018
• Published: 03/14/2019
• Est. Priority Date: 01/31/2012
• Status: Active Grant

• Current Assignee: Dali Wireless Inc. (Dali Systems Co., Ltd.)
• Original Assignee: Dali Systems Co., Ltd.
• Inventors: Stapleton, Shawn Patrick, Trajkovic, Sasa
• Granted Patent: US 10,721,548 B2
• Time in Patent Office: Days
• 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 10/27 Arrangements for networking
• CPC Class Codes: H04J 14/0286 WDM hierarchical architectures
• CPC Class Codes: H04Q 11/0005 Switch and router aspects
• CPC Class Codes: H04Q 11/0067 Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
• CPC Class Codes: H04Q 2011/0016 using wavelength multiplexing or demultiplexing
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition
• CPC Class Codes: H04W 40/02 Communication route or path selection, e.g. power-based or shortest path routing
• CPC Class Codes: H04W 88/085 Access point devices with remote components
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A system for routing signals in a Distributed Antenna System (DAS) includes one or more local Digital Access Units (DAUs) located at a local location and one or more remote DAUs located at one or more remote locations. Each of the one or more local DAUs includes an optical port coupled to an upstream unit. The upstream unit includes at least one of a repeater, a baseband unit, a Base Transceiver Station (BTS), or a DAU. The one or more remote DAUs are coupled to the one or more local DAUs via one or more optical cables. A distance between the local location and each of the one or more remote locations is greater than two kilometers.

Claims

1. A system for routing signals in a Distributed Antenna System (DAS), the system comprising:

one or more local Digital Access Units (DAUs) located at a local location, each of the one or more local DAUs including an optical port coupled to an upstream unit and a radio frequency (RF) port configured to receive signals; and

one or more remote DAUs located at one or more remote locations, wherein the one or more remote DAUs include at least one optical port are coupled to the one or more local DAUs via one or more optical cables coupled to the at least one optical port, and wherein each of the remote DAUs includes an RF port configured to send and receive signals.

2. The system of claim 1, wherein the one or more local DAUs are configured to communicate with the one or more remote DAUs via the one or more optical cables.

3. The system of claim 1, wherein the one or more remote DAUs are configured to communicate with the one or more local DAUs via the one or more optical cables.

4. The system of claim 1, wherein each of the one or more local DAUs is configured to receive signals via an RF cable coupled to the RF port and transmit the signals to the one or more remote DAUs via the one or more optical cables.

5. The system of claim 1, wherein each of the one or more remote DAUs is configured to receive signals via an RF cable coupled to the RF port and transmit the signals to the one or more local DAUs via the one or more optical cables.

6. The system of claim 1, wherein the one or more local DAUs are further configured to receive RF signals via an RF cable coupled to a base transceiver station (BTS).

7. The system of claim 6, wherein the BTS is not co-located with the one or more local DAUs.

8. The system of claim 1, wherein the one or more local DAUs are further configured to communicate via an optical cable, with one or more repeater antennas configured to convert an optical signal to an RF signal.

9. The system of claim 1, wherein a distance between the local location and each of the one or more remote locations is greater than two kilometers.

10. The system of claim 1, wherein the system includes two or more local DAUs located at the local location and one remote DAU located at one of the one or more remote locations.

11. A method of routing signals in a Distributed Antenna System (DAS), the method comprising:

providing one or more local Digital Access Units (DAUs) at a local location, each of the one or more local DAUs being coupled to each other and operable to route signals between the one or more local DAUs and including an optical port and an RF port;

coupling, using the optical port, each of the one or more local DAUs to an upstream unit;

providing one or more remote DAUs at one or more remote locations each remote DAUs having an optical port and an RF port; and

coupling the one or more remote DAUs to the one or more local DAUs via one or more optical cables.

12. The method of claim 11, further comprising:

receiving, by the one or more local DAUs, RF signals; and

transmitting data from the RF signals to the one or more remote DAUs via the one or more optical cables.

13. The method of claim 12, wherein receiving, by the one or more local DAUs, RF signals includes receiving the RF signals via an RF cable coupled to a base transceiver station (BTS).

14. The method of claim 13, wherein the BTS is not co-located with the one or more local DAUs.

15. The method of claim 11, further comprising:

receiving, by the one or more remote DAUs, RF signals; and

transmitting data from the RF signals to the one or more local DAUs via the one or more optical cables.

16. The method of claim 11, further comprising:

receiving, by the one or more local DAUs, from one or more repeater antennas, an optical signal converted from an RF signal by the one or more repeater antennas; and

transmitting data from the RF signals to the one or more remote DAUs via the one or more optical cables.

17. The method of claim 11, wherein a distance between the local location and each of the one or more remote locations is greater than two kilometers.

18. The method of claim 11, wherein two or more local DAUs are provided at the local location and one remote DAU is provided at one of the one or more remote locations.