Wireless communications network using frequency conversion of MIMO signals

Patent metadata

Field	Value
Publication number	US-10097257-B2
Application number	US-201715626786-A
Country	US
Kind code	B2
Filing date	Jun 19, 2017
Priority date	Dec 13, 2011
Publication date	Oct 9, 2018
Grant date	Oct 9, 2018

Abstract

In one embodiment, a repeater for wireless communication is provided. The repeater comprises: circuitry configured to receive first and second MIMO-coded information channels at a first frequency; a converting device configured to convert the first MIMO-coded information channel to a second frequency using information from a test receiver configured to determine unused frequency ranges situated outside frequency bands allocated to mobile radio for wireless communication, the test receiver communicatively coupled with the converting device, the converting device configured to convert the first MIMO-coded information channel to the second frequency in at least one communication direction, the second frequency within the unused frequency ranges situated outside the frequency bands allocated to mobile radio; and circuitry configured to transmit the first and second MIMO-coded information channels in the at least one communication direction, wherein the first and second MIMO-coded information channels are transmitted using different frequencies compared to each other.

First claim

What is claimed is:

1. A repeater for wireless communication comprising:
circuitry configured to receive a first MIMO-coded information channel and a second MIMO-coded information channel at a first frequency;
a converting device configured to convert the first MIMO-coded information channel to a second frequency using information from a test receiver configured to determine unused frequency ranges that are situated outside frequency bands allocated to mobile radio for wireless communication, wherein the test receiver is communicatively coupled with the converting device, wherein the converting device is configured to convert the first MIMO-coded information channel to the second frequency in at least one communication direction, wherein the second frequency is within the unused frequency ranges situated outside the frequency bands allocated to mobile radio; and
circuitry configured to transmit the first MIMO-coded information channel and the second MIMO-coded information channel in the at least one communication direction, wherein the first MIMO-coded information channel and the second MIMO-coded information channel are transmitted using different frequencies compared to each other.

2. The repeater of claim 1 , wherein the at least one communication direction comprises a downlink direction, wherein the repeater is configured to be connected to a base station via bidirectional couplers and receive the first MIMO-coded information channel and the second MIMO-coded information channel optically or electrically from the base station.

3. The repeater of claim 1 , wherein the at least one communication direction comprises an uplink direction, wherein the repeater is configured to receive the first MIMO-coded information channel and the second MIMO-coded information channel from a wireless terminal.

4. The repeater of claim 1 , wherein the test receiver is integrated into the repeater.

5. The repeater of claim 1 , wherein the converting device is configured to carry out no frequency conversion for the second MIMO-coded information channel, wherein the second MIMO-coded information channel is transmitted at the first frequency.

6. The repeater of claim 1 , wherein the converting device is further configured to convert the second MIMO-coded information channel to a third frequency using information from the test receiver configured to determine unused frequency ranges that are situated outside the frequency bands allocated to mobile radio for wireless communication, wherein the converting device is configured to convert the second MIMO-coded information channel to the third frequency in the at least one communication direction, wherein the third frequency is within the unused frequency ranges situated outside the frequency bands allocated to mobile radio.

7. A repeater for wireless communication comprising:
circuitry configured to receive communication signals on a first MIMO-coded information channel and a second MIMO-coded information channel, wherein a frequency of the first MIMO-coded information channel is outside frequency bands allocated to mobile radio for wireless communication, wherein a frequency of the second MIMO-coded information channel is different than the frequency of the first MIMO-coded information channel;
a converting device configured to convert the frequency of the first MIMO-coded information channel in at least one communication direction to a frequency within the frequency bands allocated to mobile radio for wireless communication; and
circuitry configured to transmit the first MIMO-coded information channel and the second MIMO-coded information channel in the at least one communication direction, wherein the first MIMO-coded information channel and the second MIMO-coded information channel are transmitted using equal frequencies.

8. The repeater of claim 7 , wherein the at least one communication direction comprises a downlink direction, wherein the repeater is configured to wirelessly transmit the first MIMO-coded information channel and the second MIMO-coded information channel using equal frequencies to a wireless terminal.

9. The repeater of claim 7 , wherein the at least one communication direction comprises an uplink direction, wherein the repeater is configured to be connected to a base station via bidirectional couplers and transmit the first MIMO-coded information channel and the second MIMO-coded information channel optically or electrically to the base station.

10. The repeater of claim 7 , wherein the frequency of the second MIMO-coded information channel is outside frequency bands allocated to mobile radio for wireless communication, wherein the converting device is further configured to convert the frequency of the second MIMO-coded information channel to a frequency within the frequency bands allocated to mobile radio for wireless communication.

11. The repeater of claim 7 , wherein the frequency of the second MIMO-coded information channel is within frequency bands allocated to mobile radio for wireless communication, wherein the converting device is configured to carry out no frequency conversion for the second MIMO-coded information channel.

12. A distributed antenna system (DAS) for wireless communication comprising:
at least one remote unit configured to receive a first MIMO-coded information channel and a second MIMO-coded information channel at a first frequency;
a converting device configured to convert a frequency of the first MIMO-coded information channel to a second frequency using information from a test receiver configured to determine unused frequency ranges that are situated outside the frequency bands allocated to mobile radio for wireless communication, wherein the test receiver is communicatively coupled with the converting device, wherein the converting device is configured to convert the first MIMO-coded information channel to the second frequency in at least one communication direction, wherein the second frequency is within the unused frequency ranges situated outside the frequency bands allocated to mobile radio; and
a master unit communicatively coupled to the at least one remote unit via one or more signal lines, wherein the master unit is configured to receive a transmission signal containing the MIMO-coded information channels via the one or more signal lines, wherein the master unit comprises:
circuitry configured to transmit the first MIMO-coded information channel and the second MIMO-coded information channel in the at least one communication direction, wherein the first MIMO-coded information channel and the second MIMO-coded information channel are transmitted using different frequencies compared to each other.

13. The DAS of claim 12 , wherein the converting device is integrated into the at least one remote unit.

14. The DAS of claim 12 , wherein the converting device is integrated into the master unit.

15. The DAS of claim 12 , wherein the master unit and the remote unit each comprise a test receiver, wherein the test receivers are connected to one another and synchronized with regard to a frequency to be selected for frequency conversion of the first MIMO-coded information channel.

16. The DAS of claim 12 , wherein the converting device is configured to carry out no frequency conversion for the second MIMO-coded information channel, wherein the second MIMO-coded information channel is transmitted at the first frequency.

17. The DAS of claim 12 , wherein the converting device is further configured to convert the second MIMO-coded information channel to a third frequency using information from the test receiver conf

Assignees

• Andrew Wireless Systems Gmbh
• Fraunhofer Ges Forschung
• Karlsruher Inst Technologie

Inventors

• Braz Oliver
• Dussmann Alfons
• Tarlazzi Luigi
• Haustein Thomas
• Wirth Thomas
• Wieruch Dennis
• Jondral Friedrich
• Jäkel Holger

Classifications

• H04B7/2606

  Arrangements for base station coverage control, e.g. by using relays in tunnels · CPC title

• H04B7/145 Primary

  Passive relay systems · CPC title

• H04B7/0413

  MIMO systems · CPC title

• H04B7/15542 Primary

  Selecting at relay station its transmit and receive resources (selection of wireless resources by user or terminal H04W72/02; arrangements affording multiple use of the transmission path by two-dimensional division of the resources H04L5/0003, or by allocating sub-channels H04L5/003) · CPC title

• H04W72/0453

  Resources in frequency domain, e.g. a carrier in FDMA · CPC title