System and method for increased bandwidth efficiency within microwave backhaul of a telecommunication system

• US 8,811,366 B2
• Filed: 03/05/2013
• Issued: 08/19/2014
• Est. Priority Date: 11/16/2011
• Status: Active Grant

• Current Assignee: T-Mobile USA, Inc. (Deutsche Telekom AG)
• Original Assignee: MetroPCS Wireless Incorporated (Deutsche Telekom AG)
• Inventors: Ashrafi, Solyman
• Primary Examiner(s): LIU, JUNG
• Application Number:
  US13/785,382
• Publication Number:
  US 20130177009A1
• Time in Patent Office: 532 Days
• Field of Search: 370/203, 370204-215, 370229-240, 370310-394, 370/395.1, 370/395.3, 370/395.4, 370/395.41, 370/395.42, 370/395.5, 370/395.52, 370431-529, 370523-520
• US Class Current: 370/338
• CPC Class Codes: H04J 1/08 Arrangements for combining channels branching filters H01P1/213, H03H7/46
• CPC Class Codes: H04L 5/04 the signals being represented by different amplitudes or polarities, e.g. quadriplex
• CPC Class Codes: H04W 72/044 based on the type of the allocated resource

Abstract

An apparatus for transmitting information in a wireless communication system includes a first interface for receiving a plurality of input data streams. Signal processing circuitry transmits and receives the plurality of input data streams on at least one frequency. Each of the plurality of input data streams on the at least one frequency have a different orbital angular momentum imparted thereto.

Claims

1. An apparatus for transmitting information in a wireless communications system, comprising:

a first interface for receiving a plurality of input data streams;

signal processing circuitry for processing each of the received plurality of input data streams to apply a different orbital angular momentum to each of the plurality of input data streams, combining at least two of the plurality of input data streams each having the different angular momentum applied thereto onto a single RF frequency;

a transmitter for transmitting the single RF frequency having the at least two input data streams, each with the different orbital angular momentums applied thereto over a radio frequency channel on the single RF frequency;

a receiver for receiving the at least one frequency having the plurality of different orbital angular momentums therein over the radio frequency channel;

signal separator circuitry for separating each of the plurality of input data streams having the different orbital angular momentum from the received single RF frequency; and

second signal processing circuitry for removing the different orbital angular momentum from each of the plurality of input data streams.

2. The apparatus of claim 1, wherein the signal processing circuitry further comprises first signal processing circuitry for imparting a different orbital angular momentum to each of the plurality of input streams.

3. The apparatus of claim 2, wherein the first signal processing circuitry generates a different current for each of the plurality of input data streams for imparting the different orbital angular momentum to an input data stream.

4. The apparatus of claim 1, wherein the signal processing circuitry further comprises a combiner for combining at least a portion of the plurality of input data streams having the different angular momentum onto the single RF frequency.

5. The apparatus of claim 1 further including a modulator/demodulator for modulating and demodulating the input data streams.

6. A wireless communications system for transmitting information over a wireless backhaul of a telecommunications system, comprising:

first transceiver circuitry for transmitting an RF frequency over an RF communications link, wherein the first transceiver circuitry transmits a plurality of data streams on the RF frequency, each of the plurality of data streams on the RF frequency transmitted with a unique orbital angular momentum applied thereto, wherein the first transceiver circuitry further comprises;

first signal processing circuitry for generating the unique orbital angular momentum associated with each of the plurality of data streams;

a signal combiner for combining each of the plurality of data streams having the different orbital angular momentum onto the at least one frequency; and

a transmitter for transmitting the at least one frequency having the plurality of different orbital angular momentums therein over the RF communications link;

second transceiver circuitry for receiving the RF frequency over the RF communications link of the wireless backhaul, wherein the second transceiver circuitry extracts from the RF frequency each of the plurality of data streams having the unique orbital angular momentum applied thereto.

7. The apparatus of claim 6 wherein the first signal processing circuitry generates a different current for each of the plurality of input data streams for imparting the unique orbital angular momentum to an input data stream.

8. The wireless communications system of claim 7, wherein the second transceiver circuitry further includes:

a receiver for receiving the at least one RF frequency having the plurality of different orbital angular momentums therein over the RF communications link;

signal separator circuitry for separating each of the plurality of data streams having the unique orbital angular momentum associated therewith from the received at least one frequency; and

second signal processing circuitry for removing the unique orbital angular momentum from each of the plurality of input data streams.

9. The wireless communications system of claim 6 further including a first antenna for transmitting the at least one RF frequency having the plurality of input data streams, each of the plurality of input data streams having the unique orbital angular momentum therein responsive to information contained in the input data stream.

10. The wireless communications system of claim 9 further including a second antenna for receiving the at least one RF frequency having the plurality of input data streams having the unique orbital angular momentum therein.

11. A wireless communications system for transmitting information between a transmission point and a receiving point of a wireless communications system, comprising:

first transceiver circuitry for transmitting over an RF communications link and second transceiver circuitry for receiving over the RF communications link, wherein the RF communications link comprises;

an RF frequency interconnecting the transmission point and the receiving point on an RF communications link;

a plurality of data streams combined together onto the RF frequency; and

wherein each of the plurality of data streams on the RF frequency are applied to the RF frequency with a unique orbital angular momentum to enable multiple data streams to be transmitted on the RF frequency.

12. The wireless communications link of claim 11, wherein each of the plurality of data streams have a unique current associated therewith for generating the unique orbital angular momentum.

13. A method for transmitting data, comprising:

receiving a plurality of data streams;

applying a unique orbital angular momentum to at least two of the plurality of data streams;

combining the at least two of the plurality of data streams having the unique orbital angular momentum applied thereto onto a single RF frequency of an RF communications link;

transmitting the single RF frequency including the at least two of the plurality of data streams having the unique orbital angular momentum applied thereto over the RF communications link;

receiving the single RF frequency including the at least two of the plurality of data streams having a unique orbital angular momentum over the RF communications link;

separating each of the at least two of the plurality of input data streams having the unique orbital angular momentum from the received single RF frequency; and

removing the unique orbital angular momentum from each of the at least two of the plurality of input data streams.

14. The method of claim 13 wherein the step of imparting further comprises:

generating a unique current for each of the plurality of data streams; and

applying the generated unique current to each of the plurality of data streams.