DYNAMIC READJUSTMENT OF POWER

• US 20080168199A1
• Filed: 03/17/2008
• Published: 07/10/2008
• Est. Priority Date: 03/31/2005
• Status: Active Grant

• Current Assignee: CommScope Technologies, LLC (CommScope Holding Company, Inc.)
• Original Assignee: ADC Telecommunications Incorporated (TE Connectivity Limited)
• Inventors: Bauman, Donald R., Mitchell, William J., Hermel, Michael J., Cannon, Jeffrey J., Weaver, Douglas D., Conyers, David J., Toms, Jerry Edward, Sonbarse, Santosh K.
• Granted Patent: US 7,574,234 B2
• Time in Patent Office: Days
• US Class Current: 710/106
• CPC Class Codes: H04B 1/0003 Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain digital baseband systems H04L25/00; digital modulation/demodulation H04L27/00; CDMA H04B1/707; TDMA H04B7/2643; image transmission H04N5/00
• CPC Class Codes: H04B 1/406 with more than one transmission mode, e.g. analog and digital modes

Abstract

System and methods for the dynamic readjustment of power are provided. In one embodiment a communications system comprises a base station including one or more radio head interface modules and a signal processing module, the radio head interface modules adapted to communicate with the signal processing module. The signal processing module performs modulation and demodulation of voice and data streams using one or more air interface protocols. The system further comprises a radio head unit coupled to the radio head interface modules over one or more transport mediums. The radio head unit communicates with one or more subscriber units using the air interface protocols. The radio head interface modules receive power level adjustment parameters from the signal processing module for one or more logical channels. The one or more radio head interface modules reconfigure a signal gain of one or more communications channels based on the power level adjustment parameters.

Claims

1. A communications system, comprising:

a base station including;

one or more radio head interface modules; and

a signal processing module, the one or more radio head interface modules adapted to communicate with the signal processing module;

wherein the signal processing module performs modulation and demodulation of voice and data streams using one or more air interface protocols; and

a radio head unit coupled to the one or more radio head interface modules over one or more transport mediums;

wherein the radio head unit communicates with one or more subscriber units using the one or more air interface protocols;

wherein the one or more radio head interface modules receive power level adjustment parameters from the signal processing module for one or more logical channels;

wherein the one or more radio head interface modules reconfigure a signal gain of one or more communications channels based on the power level adjustment parameters.

2. The system of claim 1, wherein the base station further comprises:

one or more interface devices, wherein the one or more radio head interface modules communicate with the signal processing module over the one or more interface devices.

3. The system of claim 2, wherein one or more interface devices includes at least one of a PCI-X interface, a ATCA interface, a PCI Express interface, a Gigabit Ethernet interface, a SCSI interface, a Rocket I/O interface, a UDP/IP link interface, a TCP/IP link interface, a Serial ATA interface, a Card bus for PCMIA cards interface, a high speed serial interface and a high speed parallel interface.

4. The system of claim 1, wherein one or more air interface protocols include at least one of Global System for Mobile communications (GSM), Advanced Mobile Phone System (AMPS), code division multiple access (CDMA), Wide-band CDMA, time division multiple access (TDMA), Cellular Digital Packet Data (CDPD), Enhanced Data rates for GSM Evolution (EDGE), General Packet Radio Service (GPRS), Integrated Digital Enhanced Network (iDEN), and Orthogonal Frequency Division Multiplexing (OFDM).

5. The system of claim 1, wherein the power level adjustment parameters include at least one of a signal gain indicator, signal gain parameters, and a timing trigger.

6. The system of claim 5, wherein the timing trigger is a designated time.

7. The system of claim 6, wherein the designated time correlates to a time count internal to the radio head interface module.

8. The system of claim 7, wherein the one or more radio head interface modules further comprises a global positioning system receiver, wherein the time count internal to the radio head interface module is synchronized with an output signal from the global positioning system receiver.

9. The system of claim 8, wherein the signal processing module is synchronized with an output signal from the global positioning system receiver.

10. The system of claim 5, wherein the timing trigger is a designated data sample.

11. The system of claim 1, wherein the signal processing module communicates one or more pages of data samples with the one or more radio head interface modules, each of the one or more pages of data samples having a page header;

wherein signal gain adjustment parameters are contained in the page header.

12. The system of claim 1, wherein the transport mediums are one or more of twisted pair cable, optical fiber, millimeter wave, coaxial cable, and Free Space Optics (FSO).

13. The system of claim 1, wherein the one or more radio head interface modules further comprise:

a transmit buffer, the transmit buffer adapted to receive a data stream from the signal processing module and store the data stream as a page of data samples;

a transmit engine;

a digital upconverter, wherein the transmit engine is adapted to transfer the page of data samples from the transmit buffer to the digital up converter;

a configuration management unit adapted to receive power level adjustment parameters from the signal processing module; and

a memory adapted with digital upconverter filter parameters;

wherein the configuration management unit is further adapted to access the memory to lookup digital upconverter filter parameters based on the power level adjustment parameters;

wherein the configuration management unit is further adapted to output the digital upconverter filter parameters to the digital upconverter.

14. The system of claim 13, wherein the one or more radio head interface modules further comprise:

a receive buffer;

a receive engine; and

a digital downconverter;

the receive engine adapted to transfer a data stream from the digital downconverter to the receive buffer, the receive buffer adapted to store the data stream as a page of data samples, the receive buffer further adapted to output the page of data samples to the signal processing module;

the memory further adapted with digital downconverter filter parameters;

wherein the configuration management unit is further adapted to access the memory to lookup digital downconverter filter parameters based on the power level adjustment parameters;

wherein the configuration management unit is further adapted to output the digital downconverter filter parameters to the digital downconverter.

15. A radio head interface module, the module comprising:

a transmit buffer, the transmit buffer adapted to receive a data stream from a signal processing module and store the data stream as a page of data samples having a page header;

a transmit engine;

a digital upconverter, the transmit engine adapted to transfer the page of data samples from the transmit buffer to the digital upconverter;

a configuration management unit adapted to receive power level adjustment parameters from the signal processing module; and

a memory adapted with digital upconverter filter parameters;

wherein the configuration management unit is further adapted to access the memory to lookup associated digital upconverter filter parameters based on the power level adjustment parameters;

wherein the configuration management unit is further adapted to output the associated digital upconverter filter parameters to the digital up converter.

16. The radio head interface module of claim 15, the module further comprising:

a receive buffer;

a receive engine; and

a digital downconverter;

the receive engine adapted to transfer a data stream from the digital downconverter to the receive buffer, the receive buffer adapted to store the data stream as a page of data samples, the receive buffer further adapted to output the page of data samples to the signal processing module;

the memory further adapted with digital downconverter filter parameters;

wherein the configuration management unit is further adapted to access the memory to lookup the associated digital downconverter filter parameters based on the power level adjustment parameters; and

wherein the configuration management unit is further adapted to output the associated digital downconverter filter parameters to the digital downconverter.

17. A communication system comprising:

a signal processing module;

a radio head interface module;

a radio head unit;

means for embedding channel signal gain parameters into a page header of a page of a first set of RF data samples;

means for communicating the page of the first set of RF data samples and page header from the signal processing module to the radio head interface module;

means for extracting the channel signal gain parameters from the page header;

means of communicating a second set of RF data samples from the radio head interface module to the radio head unit; and

means for adjusting the signal gain of the second set of RF data samples based on the channel signal gain parameters.

18. The communication system of claim 17 further comprising:

means of communicating a third set of RF data samples from the radio head unit to the radio head interface module;

means of communicating a page of a forth set of RF data samples from the radio head interface to the signal processing module; and

means for adjusting the signal gain of the forth set of RF data samples based on the channel signal gain parameters.

19. A method for dynamic readjustment of power, the method comprising:

communicating voice and data streams between a signal processing module and one or more radio head interface modules;

modulating and demodulating voice and data streams using one or more air interface standards;

receiving signal power level adjustment parameters from the signal processing module for one or more logical channels at the one or more radio head interface modules; and

reconfiguring a logical channel based on the signal power adjustment parameters.