Using a coaxial cable for distributing MIMO signals in-house

• US 10,177,832 B2
• Filed: 02/12/2018
• Issued: 01/08/2019
• Est. Priority Date: 08/25/2015
• Status: Active Grant

• Current Assignee: Cellium Technologies, LTD.
• Original Assignee: Cellium Technologies, LTD.
• Inventors: Kinamon, Roy, Zuckerman, Gal, Liv, Oz
• Primary Examiner(s): Wong, Linda
• Application Number:
  US15/894,182
• Publication Number:
  US 20180167128A1
• Time in Patent Office: 330 Days
• Field of Search: 375211, 375219, 375220, 375222, 375240, 37524026, 375257, 375256, 375259, 375285, 375284, 375295, 375316, 375324, 375347, 375299, 375302
• CPC Class Codes: H04B 10/114 Indoor or close-range type systems
• CPC Class Codes: H04B 10/1149 Arrangements for indoor wireless networking of information
• CPC Class Codes: H04B 10/25 Arrangements specific to fibre transmission
• CPC Class Codes: H04B 10/40 Transceivers
• CPC Class Codes: H04B 7/0413 MIMO systems
• CPC Class Codes: H04B 7/06 at the transmitting station
• CPC Class Codes: H04B 7/0697 using spatial multiplexing
• CPC Class Codes: H04L 5/00 Arrangements affording multiple use of the transmission path
• CPC Class Codes: H04L 5/0032 Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation

Abstract

Systems and methods for using spatial multiplexing in conjunction with a coaxial cable deployed in-house. Input streams associated with spatial multiplexing are converted into respective signals occupying different respective frequencies. The signals are transported, via a coaxial cable deployed in-house, into a certain room located in-house, thereby enabling a presence of the plurality of signals in the certain room. The signals are shifted into respective output signals that occupy a single wireless frequency by up-converting each signal from the corresponding different frequency into the single wireless frequency. The output signals are transmitted wirelessly, using only the single wireless frequency, via respective antennas located in the certain room, all said antennas operating in conjunction with the single wireless frequency, thereby achieving spatial multiplexing in the certain room and in conjunction with the coaxial cable.

Claims

1. A system operative to use spatial multiplexing in conjunction with a coaxial cable deployed in-house, comprising:

a base converter;

a coaxial cable deployed in-house, said coaxial cable reaching into a certain room located in-house; and

a plurality of antennas located in the certain room;

wherein the system is configured to;

convert, in the base converter, a plurality of streams associated with spatial multiplexing, respectively, into a plurality of signals occupying, respectively, a plurality of different frequencies;

transport the plurality of signals, in conjunction with the plurality of different frequencies, via the coaxial cable, into the certain room, thereby enabling a presence of the plurality of signals in the certain room;

shift the plurality of signals into, respectively, a plurality of output signals, in which all said output signals occupy a single wireless frequency, and in which said shift is achieved by up-converting each one of the signals, which are now present in the certain room, from the corresponding one of the different frequencies into the single wireless frequency; and

transmit wirelessly, using only the single wireless frequency, the plurality of output signals, respectively, via the plurality of antennas located in the certain room, all said antennas operating in conjunction with the single wireless frequency, thereby achieving spatial multiplexing in the certain room and in conjunction with the coaxial cable;

wherein the plurality of different frequencies are located below 1.5 GHz, at frequency zones that are, at least momentarily, not occupied by in-house coaxial signals including DOCSIS signals, MoCA signals, and cable TV signals; and

wherein the plurality of streams are input to the base converter, from an access point, in a radio frequency form at frequency bands above 1.5 GHz; and

said conversion of the plurality of streams, respectively, into the plurality of signals is performed, respectively, by a plurality of mixers in the base converter, the mixers operating as down-converters.

2. The system of claim 1, further comprising an access point operative to generate the plurality of streams from at least a single data stream.

3. The system of claim 2, wherein the access point is co-located together with the base converter.

4. The system of claim 3, wherein the access point and the base converter are co-located in a second room, and the coaxial cable is operative to communicatively connect together at least the second room and the certain room.

5. The system of claim 2, wherein the access point is a WiFi access point supporting at least partly a standard associated with IEEE 802.11, and the spatial multiplexing in conjunction with the plurality of streams is part of the standard.

6. The system of claim 5, wherein the standard includes IEEE 802.11n, IEEE 802.11ac, or IEEE 802.11ax, or a combination of any of the foregoing.

7. The system of claim 5, wherein the plurality of output signals all occupying the single wireless frequency are associated with the standard.

8. The system of claim 7, wherein the single wireless frequency is a single channel associated with the standard, and the single channel is associated with an unlicensed ISM band selected from a group of unlicensed bands consisting of:

(i) a 2.4 GHz band and (ii) a 5 GHz band.

9. The system of claim 7, wherein the plurality of output signals are received by a client device in the certain room as facilitated by the coaxial cable, thereby improving in-house WiFi communication.

10. The system of claim 2, wherein the access point is an LTE or a 5G access point or an LTE or a 5G base station, the LTE or 5G access point or the LTE or 5G base station supporting at least partly a standard associated with LTE or 5G, respectively, in which the spatial multiplexing in conjunction with the plurality of streams are part of the standard.

11. The system of claim 10, wherein:

the plurality of output signals all occupying the single wireless frequency are associated with the standard;

the single wireless frequency is a single channel associated with the standard; and

the single channel is associated with a licensed band selected from a group of licensed bands consisting of;

(i) a 1.8 GHz band, (ii) a 1.9 GHz band, (iii) a 2.0 GHz band, (iv) a 2.3 GHz band, (v) a 2.5 GHz band, and (vi) a 3.5 GHz band.

12. The system of claim 10, wherein the plurality of output signals are in a licensed band and are each transmitted at a power level below 10 (ten) dBm and above −

30 (minus thirty) dBm.

13. The system of claim 1, wherein the frequency bands above 1.5 GHz include a 1.8 GHz band, a 1.9 GHz band, a 2.0 GHz band, a 2.3 GHz band, a 2.4 GHz band, a 2.5 GHz band, or a 5 GHz band, or a combination of any of the foregoing.