Remotely reconfigurable distributed antenna system and methods

• US 10,701,695 B2
• Filed: 10/30/2018
• Issued: 06/30/2020
• Est. Priority Date: 09/14/2010
• Status: Active Grant

• Current Assignee: Dali Wireless Inc. (Dali Systems Co., Ltd.)
• Original Assignee: Dali Wireless Inc. (Dali Systems Co., Ltd.)
• Inventors: Lemson, Paul, Stapleton, Shawn Patrick, Trajkovic, Sasa, Lee, Albert S.
• Primary Examiner(s): Rego, Dominic E
• Application Number:
  US16/175,520
• Publication Number:
  US 20190208523A1
• Time in Patent Office: 609 Days
• CPC Class Codes: H03F 1/3247 using feedback acting on predistortion circuits H03F1/3264 takes precedence
• CPC Class Codes: H03F 2200/204 A hybrid coupler being used at the output of an amplifier circuit
• CPC Class Codes: H03F 2201/3224 Predistortion being done for compensating memory effects
• CPC Class Codes: H03F 2201/3233 Adaptive predistortion using lookup table, e.g. memory, RAM, ROM, LUT, to generate the predistortion
• CPC Class Codes: H03F 3/24 of transmitter output stages
• CPC Class Codes: H04B 10/2575 Radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier
• CPC Class Codes: H04B 10/25753 Distribution optical network, e.g. between a base station and a plurality of remote units
• 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 45/56 Routing software
• CPC Class Codes: H04L 47/125 by balancing the load, e.g. traffic engineering
• CPC Class Codes: H04L 5/0032 Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• 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 2011/0081 Fault tolerance; Redundancy; Recovery; Reconfigurability
• CPC Class Codes: H04Q 2213/1301 Optical transmission, optical switches
• 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 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 72/52 based on load
• CPC Class Codes: H04W 88/085 Access point devices with remote components

Abstract

The present disclosure is a novel utility of a software defined radio (SDR) based Distributed Antenna System (DAS) that is field reconfigurable and support multi-modulation schemes (modulation-independent), multi-carriers, multi-frequency bands and multi-channels. The present disclosure enables a high degree of flexibility to manage, control, enhance, facilitate the usage and performance of a distributed wireless network such as flexible simulcast, automatic traffic load-balancing, network and radio resource optimization, network calibration, autonomous/assisted commissioning, carrier pooling, automatic frequency selection, frequency carrier placement, traffic monitoring, traffic tagging, pilot beacon, etc.

Claims

1. A Distributed Antenna System (DAS) supporting Internet Protocol (IP) traffic and cellular traffic, the DAS comprising:

a plurality of interconnected digital access units (DAUs), at least one DAU of the plurality of DAUs including a router configured to route IP traffic data and cellular traffic data to another DAU of the plurality of DAUs and to at least one remote radio unit (RRU); and

the at least one RRU in communication with the at least one DAU and configured to;

transmit a first plurality of radio frequency (RF) signals associated with the IP traffic data to wireless subscribers; and

transmit a second plurality of RF signals associated with the cellular traffic data to wireless subscribers,

wherein the at least one DAU is configured to transmit the IP traffic data and the cellular traffic data to the at least one RRU via a communication path shared between the IP traffic data and the cellular traffic data.

2. The DAS of claim 1, wherein the at least one DAU is configured to receive the cellular traffic data from a base transceiver station (BTS) via an RF connection, a repeater, or an optical connection.

3. The DAS of claim 1, wherein the shared communication path comprises an optical fiber cable.

4. The DAS of claim 1, wherein the at least one DAU is configured to create one or more data packets containing the cellular traffic data.

5. The DAS of claim 4, wherein the at least one DAU is further configured to create the one or more data packets in compliance with the Common Public Radio Interface (CPRI) standard.

6. The DAS of claim 1, wherein the at least one DAU is configured to create one or more data packets including cellular traffic data and IP traffic data.

7. The DAS of claim 6, wherein the at least one DAU is further configured to create the one or more data packets in compliance with the Common Public Radio Interface (CRI) standard.

8. The DAS of claim 1, wherein a first RF signal of the second plurality of RF signals includes a first plurality of carriers, and a second RF signal of the second plurality of RF signals includes a second plurality of carriers, and wherein the first plurality of carriers is different than the second plurality of carriers.

9. A method of supporting Internet Protocol (IP) traffic and cellular traffic in a Distributed Antenna System (DAS), the method comprising:

receiving IP traffic data and cellular traffic data at one or more remote radio units (RRUs), the IP traffic data and the cellular traffic data routed to the one or more RRUs from a digital access unit (DAU) of a plurality of interconnected DA Us via a communication path shared between the IP traffic data and the cellular traffic data;

transmitting a first plurality of radio frequency (RF) signals associated with the IP traffic data to wireless subscribers; and

transmitting a second plurality of RF signals associated with the cellular traffic data to wireless subscribers.

10. The method of claim 9, wherein the DAU receives the cellular traffic data from a base transceiver station (BTS) via an RF connection, a repeater, or an optical connection.

11. The method of claim 9, wherein the shared communication path comprises an optical fiber cable.

12. The method of claim 9, wherein the DAU creates one or more data packets containing the cellular traffic data.

13. The method of claim 9, wherein the DAU creates one or more data packets containing the cellular traffic data and the IP traffic data.

14. The method of claim 9, wherein a first RF signal of the second plurality of RF signals includes a first plurality of carriers, and a second RF signal of the second plurality of RF signals includes a second plurality of carriers, and wherein the first plurality of carriers is different than the second plurality of carriers.