System and Method for Implementing Power Distribution

• US 20110223958A1
• Filed: 09/10/2010
• Published: 09/15/2011
• Est. Priority Date: 03/10/2010
• Status: Abandoned Application

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Naito, Takao, Chen, Wei-Peng, Zhu, Chenxi
• Application Number:
  US12/879,884
• Publication Number:
  US 20110223958A1
• Time in Patent Office: Days
• US Class Current: 455/522
• CPC Class Codes: H04B 7/022 Site diversity; Macro-diversity using two or more spaced independent antennas H04B7/04
• CPC Class Codes: H04B 7/0615 of weighted versions of same signal
• CPC Class Codes: H04B 7/0617 for beam forming
• CPC Class Codes: H04B 7/15535 Control of relay amplifier gain amplifier gain control in general H03G3/00; gain control reducing self - or loop interference H04B7/15578
• CPC Class Codes: H04W 52/143 Downlink power control
• CPC Class Codes: H04W 52/20 using error rate
• CPC Class Codes: H04W 52/24 using SIR [Signal to Interference Ratio] or other wireless path parameters
• CPC Class Codes: H04W 52/241 taking into account channel quality metrics, e.g. SIR, SNR, CIR, Eb/lo
• CPC Class Codes: H04W 52/267 taking into account the information rate
• CPC Class Codes: H04W 52/386 centralized, e.g. when the radio network controller or equivalent takes part in the power control
• CPC Class Codes: H04W 52/40 during macro-diversity or soft handoff
• CPC Class Codes: H04W 72/0473 the resource being transmission power
• CPC Class Codes: H04W 88/085 Access point devices with remote components
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A method for adjusting power distribution includes establishing a connection between a base station and a plurality of remote transceivers. The method also includes establishing a plurality of wireless connections with a plurality of endpoints via one or more of the plurality of remote transceivers. The method further includes determining a signal quality indication for each of the plurality of remote transceivers for any endpoint for which the remote transceiver is able to receive a wireless communication. The method also includes determining a power distribution for the plurality of remote transceivers based on the determined signal quality indication for each of the remote transceivers, the power distribution indicative of the amount of power each remote transceiver is to use for each endpoint when transmitting wireless communications.

Claims

1. A method for adjusting power distribution comprising:

establishing a connection between a base station and a plurality of remote transceivers;

establishing a plurality of wireless connections with a plurality of endpoints via one or more of the plurality of remote transceivers;

determining a signal quality indication for each of the plurality of remote transceivers for any endpoint for which the remote transceiver is able to receive a wireless communication; and

determining a power distribution for the plurality of remote transceivers based on the determined signal quality indication for each of the remote transceivers, the power distribution indicative of the amount of power each remote transceiver is to use for each endpoint when transmitting wireless communications.

2. The method of claim 1, wherein establishing the connection between the base station and the plurality of remote transceivers comprises establishing a Common Public Radio Interface connection between the base station and the plurality of remote transceivers.

3. The method of claim 1, further comprising:

generating an amplified data set by applying the power distribution to core data comprising data to be sent to the plurality of endpoints; and

performing inverse fast Fourier transform on the amplified data set.

4. The method of claim 1, wherein determining the power distribution comprises increasing the power distribution for wireless connections having a better relative signal quality indication and decreasing the power distribution for wireless connections having a worse relative signal quality indication.

5. The method of claim 1, further comprising:

receiving in-phase/quadrature (I/Q) data from each of the plurality of remote transceivers, the I/Q data used to determine the signal quality indication;

applying maximum ratio combining (MRC) to the I/Q data to determine core data sent from the plurality of endpoints.

6. The method of claim 1, further comprising, for each of the plurality of remote transceivers:

generating a plurality of common public radio interface (CPRI) messages to be sent to the plurality of remote transceivers, each CPRI associated with a different one of the plurality of remote transceivers;

populating the CPRI message such that the data to be sent to the plurality of endpoints has been adjusted based on the determined power distribution; and

sending the CPRI messages to each of the remote transceivers.

7. One or more computer-readable non-transitory storage media embodying software that when executed by a processor is operable to:

establish a connection between a base station and a plurality of remote transceivers;

establish a plurality of wireless connections with a plurality of endpoints via one or more of the plurality of remote transceivers;

determine a signal quality indication for each of the plurality of remote transceivers for any endpoint for which the remote transceiver is able to receive a wireless communication; and

determine a power distribution for the plurality of remote transceivers based on the determined signal quality indication for each of the remote transceivers, the power distribution indicative of the amount of power each remote transceiver is to use for each endpoint when transmitting wireless communications.

8. The media of claim 7, wherein the software that when executed is operable to establish a connection between the base station and the plurality of remote transceivers comprises software, that when executed, is operable to establish a Common Public Radio Interface connection between the base station and the plurality of remote transceivers.

9. The media of claim 7, wherein the software, when executed, is further operable to:

generate an amplified data set by applying the power distribution to core data comprising data to be sent to the plurality of endpoints; and

perform inverse fast Fourier transform on the amplified data set.

10. The media of claim 7, wherein the software that when executed is operable to determine the power distribution comprises software, that when executed, is operable to increase the power distribution for wireless connections having a better relative signal quality indication and decreasing the power distribution for wireless connections having a worse relative signal quality indication.

11. The media of claim 7, wherein the software, when executed, is further operable to:

receive in-phase/quadrature (I/Q) data from each of the plurality of remote transceivers, the I/Q data used to determine the signal quality indication;

apply maximum ratio combining (MRC) to the I/Q data to determine core data sent from the plurality of endpoints.

12. The media of claim 7, wherein the software, when executed, is further operable to, for each of the plurality of remote transceivers:

generate a plurality of common public radio interface (CPRI) messages to be sent to the plurality of remote transceivers, each CPRI associated with a different one of the plurality of remote transceivers;

populate the CPRI message such that the data to be sent to the plurality of endpoints has been adjusted based on the determined power distribution; and

send the CPRI messages to each of the remote transceivers.

13. A system comprising for adjusting power distribution comprising:

an interface configured to;

establish a connection between a base station and a plurality of remote transceivers; and

establish a plurality of wireless connections with a plurality of endpoints via one or more of the plurality of remote transceivers;

a processor coupled to the interface and configured to;

determine a signal quality indication for each of the plurality of remote transceivers for any endpoint for which the remote transceiver is able to receive a wireless communication; and

determine a power distribution for the plurality of remote transceivers based on the determined signal quality indication for each of the remote transceivers, the power distribution indicative of the amount of power each remote transceiver is to use for each endpoint when transmitting wireless communications.

14. The system of claim 13, wherein the interface configured to establish the connection between the base station and the plurality of remote transceivers comprises an interface configured to establish a Common Public Radio Interface connection between the base station and the plurality of remote transceivers.

15. The system of claim 13, wherein the processor is further configured to:

generate an amplified data set by applying the power distribution to core data comprising data to be sent to the plurality of endpoints; and

perform inverse fast Fourier transform on the amplified data set.

16. The system of claim 13, wherein the processor configured to determine the power distribution comprises a processor configured to increase the power distribution for wireless connections having a better relative signal quality indication and decreasing the power distribution for wireless connections having a worse relative signal quality indication.

17. The system of claim 13, wherein the processor is further configured to:

receive in-phase/quadrature (I/Q) data from each of the plurality of remote transceivers, the I/Q data used to determine the signal quality indication;

apply maximum ratio combining (MRC) to the I/Q data to determine core data sent from the plurality of endpoints.

18. The system of claim 13:

wherein the processor is further configured to, for each of the plurality of remote transceivers;

generate a plurality of common public radio interface (CPRI) messages to be sent to the plurality of remote transceivers, each CPRI associated with a different one of the plurality of remote transceivers; and

populate the CPRI message such that the data to be sent to the plurality of endpoints has been adjusted based on the determined power distribution; and

the interface is further configured to send the CPRI messages to each of the remote transceivers.