SYSTEM AND METHOD FOR COMMUNICATING INFORMATION FROM WIRELESS SOURCES TO LOCATIONS WITHIN A BUILDING
A system provides radio frequency signals devices inside a building. The system includes one or more receivers, each receiver configured to receive one or more radio frequency signals from at least one source. The system further includes a device configured to receive the signals from the receiver or receivers. The device combines the received signals into a combination signal and converts the combination signal to a digital signal. The digital signal is then provided over a digital communications medium within the building. The system further includes an antenna system configured to receive the digital signal and to retransmit the radio frequency signals from the sources to the devices inside the building.
The present application claims the benefit of U.S. Provisional Patent Application No. 60/962,697, filed Jul. 31, 2007, the entire disclosure of which is incorporated by reference.
BACKGROUNDThe present disclosure generally relates to the field of building communications systems. The present disclosure relates more specifically to radio frequency repeaters and distributed antenna systems.
Structural interference often prevents radio frequency (RF) information originating from wireless sources (e.g., sources, local sources, etc.) from being adequately received within the walls and/or rooms of a building. Conventional repeater systems are configured to receive narrow-band RF communications originating from outside the building and to repeat the signal at local antennas (e.g., distributed antennas) provided within the building. There is a need for improved systems and methods for communicating information from wireless sources (e.g., located external to a building) to electronic devices located within the building.
SUMMARYThe invention relates to a system for communicating information from a first communication source and a second communication source located external to a building to electronic devices located within the building via an in-building communications network. The system includes a receiver configured to receive first radio frequency information transmitted from the first communication source, the receiver configured to simultaneously receive second radio frequency information transmitted from the second communication source. The system further includes a processing circuit configured to combine the first and second radio frequency information as broadband information and to digitize the broadband information for transmission via the in-building communications network as a digital signal. The system yet further includes an in-building antenna system configured to receive the digital signal and to provide the a reproduction of the first radio frequency information to the first electronic device within the building and a reproduction of the second radio frequency information to the second electronic device within the building via radio frequency communications.
The invention relates to a method for providing radio frequency signals from to devices inside a building. The method includes the steps of receiving first radio frequency information from a first communication source and receiving second radio frequency information from a second communication source. The method further includes combining the first radio frequency information and the second radio frequency information to form a broadband analog signal and digitizing the broadband analog signal to form a digitized signal. The method yet further includes the steps of distributing the digitized signal to a digital communication medium located within the building and receiving the digitized signal via the digital communication medium. The method further includes the steps of converting the digitized signal to the first radio frequency information and the second radio frequency information and providing the first radio frequency information and the second radio frequency information to locations inside the building using an antenna system.
The invention relates to a system for providing radio frequency signals from to devices inside a building. The system includes a plurality of receivers, each receiver configured to receive a radio frequency signal from at least one remote source located outside the building. The system further includes a device configured to receive signals from the plurality of the receivers. The device combines the received signals into a combination signal and converts the combination signal to a digital signal. The digital signal is then provided over a digital communications medium within the building. The system further includes an antenna system configured to receive the digital signal and to retransmit the radio frequency signals from the sources to the devices inside the building by converting the digital signal.
Alternative exemplary embodiments relate to other features and combinations of features as may be generally recited in the claims.
The disclosure will become more fully understood from the following detailed description, taken in conjunction with the accompanying figures, wherein like reference numerals refer to like elements, in which:
Before turning to the figures, which illustrate the exemplary embodiments in detail, it should be understood that the application is not limited to the details or methodology set forth in the description or illustrated in the figures. It should also be understood that the terminology is for the purpose of description only and should not be regarded as limiting.
Referring generally to the Figures, a system for providing RF signals originating from outside a building and/or inside the building to devices inside the building is shown. The system uses one or more receivers (e.g., receiving antennas and/or related circuitry) to receive RF signals from one or more of sources (e.g., a mobile communications tower, a mobile communications antenna, cellular phone towers, municipal Wi-Fi systems, etc.). The system combines the received RF signals into broadband information (e.g., a broadband analog signal) and digitizes the broadband information to create a digital signal. The digital signal is then provided over a high speed digital communications medium (e.g., an internet protocol (IP) network, an Ethernet network, an optical digital medium, etc.). The digital communications medium can be configured for long cable runs into the building. One or more in-building antennas (e.g., a distributed antenna system) can be dispersed within the building and connected to the digital communications medium. The in-building antennas (and/or one or more digital-to-analog converters connected thereto) convert the digital signal back into analog RF information that can be transmitted as RF signals inside the building.
According to some exemplary embodiments, the system provides a broadband RF repeater system that is configured to utilize a digital cable run between the injection point (where RF signals from outside the building are received) and the local antennas of a distributed antenna system.
Referring still to
Referring further to
Referring now to
Referring still to
A/D converter 204 is configured to receive the broadband analog information, including the RF information received at receivers 14-16, and to convert the broadband analog information to digital information. A/D converter 204 can be of any type suitable for converting broadband analog information to digital information. For example, A/D converter 204 can be a linear A/D converter or a non-linear A/D converter. A/D converter 204 can have any sampling frequency suitable for the analog information being converted. It should be appreciated that the sampling frequency should be high relative to the rate of change of the input broadband analog information so that the output of the downstream D/A converter 206 is an accurate reproduction of the original analog signal(s). While some ways of implementing A/D converter 204 may be more desirable than others for this application, any type of A/D converter may be provided. For example, A/D converter 204 might be a direct conversion ADC, a flash ADC, a successive-approximation ADC, a ramp-compare ADC, a delta-encoded ADC, a pipeline ADC, a sigma-delta ADC, or otherwise. A/D converter 204 may include or be one or more integrated circuits, microcontrollers, and/or digital signal processors. According to yet other exemplary embodiments A/D converter 204 can be driven partially by computer software.
Digital communications medium 205 can be any digital communications link, bus, cable, and/or network capable of transmitting digital information from A/D converter 204 to D/A converter 206. Digital communications medium 205 can be wired and/or wireless. For example, digital communications medium 205 can be a direct cable (e.g., single cable) run from A/D converter 204 to D/A converter 206. Digital communications medium 205 can also be a cable-based network such as an Ethernet network. The digital communications medium can use a pre-existing network (e.g., a building's IP network) to transfer data or use a dedicated network. Portions of the network can be wireless. For example, part of the digital communications medium can be an IEEE 802.11 communications link. Any wired or wireless digital communications medium can be used to carry the digital information sent from A/D converter 204 to D/A converter 206.
D/A converter 206 is configured to receive digital signals (e.g., binary signals) from digital communications medium 205 and to convert the received signals to analog signals (e.g., continuously varying signals) for providing to antenna system 208. D/A converter 206 can be of any type suitable for accurately converting the digital information into a broadband analog signal (or a plurality of narrowband signals) accurately (e.g., so that the analog signal provided to antenna system 208 and the resulting RF signals can recognized by end electronic devices 22, 26, and 30 substantially as the original RF signals from sources 11, 12, and 13 would have been recognized). The resolution and sampling frequency of the D/A converter 206 should be sufficiently high to achieve the accuracy target. While certain implementations of D/A converter 206 may be more desirable than others for this application, any type of D/A converter may be provided. For example, D/A converter 206 might be or include a pulse width modulator, an oversampling DAC, an interpolating DAC, a delta-sigma DAC, a thermometer coded DAC, a segmented DAC, and/or a hybrid DAC (using a combination of techniques or DAC types). D/A converter 206 may include or be one or more integrated circuits, microcontrollers, and/or digital signal processors. According to yet other exemplary embodiments, D/A converter 206 can be driven partially by computer software.
According to the embodiment shown in
While electronic devices 22, 26, and 30 are shown as portable electronic devices (e.g., a personal digital assistant, a mobile phone, a text-messaging device, a laptop, etc.), any number or type of in-building electronic devices can be provided to receive communications from antenna system 208.
Referring now to
Radio frequency information transmitted from sources 302, 304, 306, and/or 308 are received by antenna 309. Antenna 309 can include multiple receiving elements, one or more demultiplexers, one or more filters, and the like to facilitate recognized communications from the sources. Tuner 313 can be configured to tune the antenna for reception and/or to convert received RF signals to analog signals that can be processed by other downstream components. Receiver 312 can include any filtering, amplifying, and/or demodulation components configured to further extract and/or process analog signals that can be processed by other downstream components. Combiner 311 can be of the type described with reference to
Referring further to
In the embodiment shown in
Referring to
With reference to
Referring further to
Referring now to
Referring further to
Supervisory controllers 102 may be connected to any number of BAS devices. The devices may include, among other devices, devices such as field equipment controllers (FECs) 106 and 110 such as field-level control modules, variable air volume modular assemblies (VMAs) 108, integrator units, room controllers 112 (e.g., a variable air volume (VAV) device or unit), other controllers 114, unitary devices 116, zone controllers 118 (e.g., an air handling unit (AHU) controller), boilers 120, fan coil units 122, heat pump units 124, unit ventilators 126, expansion modules, blowers, temperature sensors, flow transducers, other sensors, motion detectors, actuators, dampers, heaters, air conditioning units, etc. These devices may generally be controlled and/or monitored by supervisory controllers 102. Data generated by or available on the various devices that are directly or indirectly connected to supervisory controllers 102 may be passed, sent, requested, or read by supervisory controllers 102 and/or sent to various other systems or terminals 104 of BAS 100. The data may be stored by supervisory controllers 102, processed by supervisory controllers 102, transformed by supervisory controllers 102, and/or sent to various other systems or terminals 104 of BAS 500. As shown in
Still referring to
As shown in
While the exemplary embodiments illustrated in the figures and described herein are presently preferred, it should be understood that the embodiments are offered by way of example only. Accordingly, the present application is not limited to a particular embodiment, but extends to various modifications that nevertheless fall within the scope of the appended claims.
The present disclosure contemplates methods, systems and program products on any machine-readable media for accomplishing various operations. The embodiments of the present disclosure may be implemented using existing computer processors, or by a special purpose computer processor for an appropriate system, incorporated for this or another purpose, or by a hardwired system.
The construction and arrangement of the systems and methods as shown in the various exemplary embodiments are illustrative only. Although only a few embodiments have been described in detail in this disclosure, many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters, mounting arrangements, use of materials, colors, orientations, etc.). For example, the position of elements may be reversed or otherwise varied and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of the present disclosure. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. Other substitutions, modifications, changes, and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present disclosure.
Embodiments within the scope of the present disclosure include program products comprising machine-readable media for carrying or having machine-executable instructions or data structures stored thereon. Such machine-readable media can be any available media that can be accessed by a general purpose or special purpose computer or other machine with a processor. By way of example, such machine-readable media can comprise RAM, ROM, EPROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to carry or store desired program code in the form of machine-executable instructions or data structures and which can be accessed by a general purpose or special purpose computer or other machine with a processor. When information is transferred or provided over a network or another communications connection (either hardwired, wireless, or a combination of hardwired or wireless) to a machine, the machine properly views the connection as a machine-readable medium. Thus, any such connection is properly termed a machine-readable medium. Combinations of the above are also included within the scope of machine-readable media. Machine-executable instructions include, for example, instructions and data which cause a general purpose computer, special purpose computer, or special purpose processing machines to perform a certain function or group of functions. It should be noted that computer code (e.g., source code, machine-executable instructions, and the like) for the system can be downloaded from a remote source (e.g., a server computer) via a network such as the internet and stored in local memory for use by a processing circuit as described herein.
It should be noted that although the figures may show a specific order of method steps, the order of the steps may differ from what is depicted. Also two or more steps may be performed concurrently or with partial concurrence. Such variation will depend on the software and hardware systems chosen and on designer choice. All such variations are within the scope of the disclosure. Likewise, software implementations could be accomplished with standard programming techniques with rule based logic and other logic to accomplish the various connection steps, processing steps, comparison steps and decision steps.
Claims
1. A system for communicating information from a first communication source and a second communication source to electronic devices located within a building via an in-building communications network, the system comprising:
- a receiver configured to receive first radio frequency information transmitted from the first communication source, the receiver configured to simultaneously receive second radio frequency information transmitted from the second communication source;
- a processing circuit configured to combine the first and second radio frequency information as broadband information and to digitize the broadband information for transmission via the in-building communications network as a digital signal; and
- an in-building antenna system configured to receive the digital signal and to provide a reproduction of the first radio frequency information to the first electronic device within the building and a reproduction of the second radio frequency information to the second electronic device within the building via radio frequency communications.
2. The system of claim 1, wherein the first radio frequency information comprises first radio frequency signals having a first center frequency and wherein the second radio frequency information comprises second radio frequency signals having a second center frequency, and wherein the first center frequency and the second center frequency are separated by at least 500 MHz.
3. The system of claim 1, wherein the processing circuit includes a digital signal processor (DSP) configured to conduct the digitization.
4. The system of claim 1, wherein the processing circuit includes a combiner and an analog to digital converter (ADC).
5. The system of claim 1, wherein the processing circuit comprises a passive multiplexer configured to conduct the combination.
6. The system of claim 5, wherein the passive multiplexer is a diplexer or a triplexer.
7. The system of claim 1, wherein the processing circuit comprises a first analog to digital converter to digitize the first radio frequency information and a second analog to digital converter to digitize the second radio frequency information.
8. The system of claim 1, wherein the in-building antenna system comprises a digital to analog converter configured to convert the digital signal to the first radio frequency information and the second radio frequency information and wherein the in-building antenna system further comprises an amplifier configured to amplify the first and second radio frequency information via one or more antennas.
9. The system of claim 1, wherein the processing circuit includes a general purpose processor configured to provide the digitization based on computer code stored in memory of the processing circuit.
10. The system of claim 1, wherein the in-building communications network is an internet protocol (IP) network.
11. The system of claim 1, wherein the first electronic device is a mobile phone, the first communication source is a mobile communications tower, and wherein the second electronic device is a text-messaging device, and the second communication source is a mobile communications antenna.
12. The system of claim 1, wherein the receiver comprises a first antenna for receiving the first radio frequency information and a second antenna for receiving the second radio frequency information.
13. The system of claim 1, wherein the processing circuit is configured to digitize broadband analog information.
14. The system of claim 13, wherein the broadband analog information spans from 800 MHz to 2.1 GHz.
15. The system of claim 13, wherein the broadband analog information spans from 400 MHz to 6.0 GHz.
16. A method for providing radio frequency signals to devices inside a building, the method comprising:
- receiving first radio frequency information from a first communication source;
- receiving second radio frequency information from a second communication source;
- combining the first radio frequency information and the second radio frequency information to form a broadband analog signal;
- digitizing the broadband analog signal to form a digitized signal;
- distributing the digitized signal to a digital communication medium located within the building;
- receiving the digitized signal from the digital communication medium;
- converting the digitized signal to the first radio frequency information and the second radio frequency information; and
- providing the first radio frequency information and the second radio frequency information to locations inside the building using an antenna system.
17. The method of claim 16, wherein the first radio frequency information and the second radio frequency information provided to locations inside the building are identifiable and recoverable to electronic devices inside the building.
18. The method of claim 16, wherein audio information provided in the first radio frequency information is recoverable by a portable electronic device receiving the first radio frequency information provided to the locations inside the building.
19. The method of claim 16, wherein providing the first radio frequency information and the second radio frequency information to locations inside the building using an antenna system include transmitting the first radio information at around 850 MHz and the second radio information at around 1850-1990 MHz.
20. A broadband RF repeater system, comprising:
- a processing circuit to receive RF information from one or more antennas, to combine the received RF information to form broadband RF information, and to digitize the broadband RF information; and
- a digital communications medium communicably coupling the processing circuit and local antennas of a distributed antenna system.
Type: Application
Filed: Jul 28, 2008
Publication Date: Mar 12, 2009
Applicant:
Inventors: John I. Ruiz (New Berlin, WI), Jerald P. Martocci (Greenfield, WI)
Application Number: 12/181,235