KR20140080719A - Energy detection apparatus - Google Patents

Abstract

According to an embodiment of the present invention, an energy detection apparatus enables to easily determine the type of a communications system with an energy pattern map (MAP) produced from the energy information received from an available radio frequency. The energy detection apparatus includes an energy detecting unit for detecting the energy information corresponding to an arbitrary signal received between at least one or more communications systems based on a cognitive radio (CR) technology; an energy pattern producing unit for producing the energy pattern map (MAP) for a set period of time on the basis of the energy information; and an energy determining unit for determining an arbitrary communications system which generates the arbitrary signal among the communications systems on the basis of the energy pattern map and the pattern information stored previously when arbitrary pattern information corresponding to the energy pattern map is stored.

Description

[0001] The present invention relates to an energy detection apparatus,

The present invention relates to an energy detection apparatus, and more particularly, to an energy detection apparatus that can easily determine the type of a communication system with an energy pattern map (MAP) generated from energy information received in an available radio band.

Communication technologies such as ISMs have been developed in which a plurality of these types of communication devices share a band, or these types of communication devices that have been authenticated as an Authorized Shared Access (ASA) band or a TV whitespace band share a band. Since the communication devices that want to use the shared band do not have the exclusive right for the corresponding band but share it, a plan for coexistence with the communication devices using the corresponding band should be provided.

Accordingly, in order to perform effective communication, communication devices operating in the frequency band of the open spectrum should detect not only the presence or absence of the same communication device as that of the communication device in the desired operation band, but also the presence or absence of operation of other communication devices. Based on the detected band information, selection of the used band and operation mode in the corresponding band can be determined. For this purpose, communication devices operating in this band should have a sensing device for sensing the operation of other communication devices in the corresponding band and a device for judging the sensing information.

A method of detecting a communication signal for a band available for operation using a sensing technique at the terminal to detect the operation of the communication device for the band or a method of registering usage information for a device using the band in a database system, Method can be used. In order to connect to the database system, a separate communication system must be provided, and a separate signal detection function must be provided to use the sensing technology.

Among them, the sensing technology processes the characteristic information of the received signal to determine the type of the signal. A sensing signal receiving device and a complicated decision algorithm are required for this purpose, which increases the complexity of the system. In addition, if the bandwidth to be checked and the signal transmission period are not known, there is a disadvantage that errors are caused in determining the type of the accurate signal.

Also, the communication devices using the shared band do not always transmit the signal occupied by the signal, so the beacon signal or the pilot signal for synchronizing the communication period is transmitted. These signals are constantly transmitted according to a separate transmission period for each communication system. Even if the transmission time varies depending on the variable data information, the transmission period is constant. A signal having such a constant transmission period can be confirmed only by energy detection, and a complicated signal detection algorithm is not required.

Therefore, in recent years, studies are underway to collect only energy information that can be collected, and to determine the type of communication system or signal used in the available band or whether or not to use the band.

An object of the present invention is to provide an energy detection apparatus which can easily determine the type of a communication system with an energy pattern map (MAP) generated from energy information received in an available radio band have.

In an embodiment, another energy detection device includes an energy detector for detecting energy information corresponding to any signal received between at least one communication systems based on Cognitive Radio (CR) technology, An energy pattern generating unit for generating an energy pattern map for a set time period, and, when storing any pattern information corresponding to the energy pattern map, based on the energy pattern map and the stored pattern information, And an energy determination unit for determining any communication system that generates the arbitrary signal among the communication systems.

Another energy detection device in the embodiment has an advantage in that it can determine the kind of any communication system based on energy information and energy information detected from any received signal.

In addition, since the energy detection apparatus according to the embodiment can determine the communication system using only the energy information detected from the received arbitrary signal, there is an advantage that the apparatus can be minimized.

In addition, the energy detection apparatus according to the embodiment detects energy information of a signal input when a new communication system is appeared and sets pattern information, thereby making it possible to easily implement a communication system There is an advantage to apply.

1 is a control block diagram showing a control configuration of an energy detecting apparatus according to an embodiment.
2 is an exemplary view showing the energy information shown in FIG.
3 is an exemplary view showing an energy pattern map shown in Fig.

The following merely illustrates the principles of the invention. Therefore, those skilled in the art will be able to devise various apparatuses which, although not explicitly described or shown herein, embody the principles of the invention and are included in the concept and scope of the invention. It is also to be understood that all conditional terms and examples recited in this specification are, in principle, expressly intended for the purpose of enabling the inventive concept to be understood and are not to be construed as limited to such specifically recited embodiments and conditions do.

It is also to be understood that the detailed description, as well as the principles, aspects and embodiments of the invention, as well as specific embodiments thereof, are intended to cover structural and functional equivalents thereof. It is also to be understood that such equivalents include all elements contemplated to perform the same function irrespective of the currently known equivalents as well as the equivalents to be developed in the future, i.e., the structure.

Thus, for example, it should be understood that the block diagrams herein illustrate exemplary conceptual aspects embodying the principles of the invention. Similarly, all flowcharts, state transition diagrams, pseudo code, and the like are representative of various processes that may be substantially represented on a computer-readable medium and executed by a computer or processor, whether or not the computer or processor is explicitly shown .

The functions of the various elements shown in the figures, including the functional blocks depicted in the processor or similar concept, may be provided by use of dedicated hardware as well as hardware capable of executing software in connection with appropriate software. When provided by a processor, the functions may be provided by a single dedicated processor, a single shared processor, or a plurality of individual processors, some of which may be shared.

Also, the explicit use of terms such as processor, control, or similar concepts should not be interpreted exclusively as hardware capable of running software, and may be used without limitation as a digital signal processor (DSP) (ROM), random access memory (RAM), and non-volatile memory. Other hardware may also be included.

In the claims of the present specification, the elements represented as means for performing the functions described in the detailed description may include, for example, a combination of circuit elements performing the function or any type of software including firmware / And is coupled with appropriate circuitry for executing the software to perform the function. It is to be understood that the invention as defined by the appended claims is not to be interpreted as limiting the scope of the invention as defined by the appended claims, as the functions provided by the various enumerated means are combined and combined with the manner in which the claims require. .

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: . In the following description, a detailed description of known technologies related to the present invention will be omitted when it is determined that the gist of the present invention may be unnecessarily blurred.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a control block diagram showing a control configuration of an energy detecting apparatus according to an embodiment, FIG. 2 is an exemplary view showing energy information shown in FIG. 1, and FIG. 3 is an exemplary view showing an energy pattern map shown in FIG. 1 .

1 to 3, the energy detection apparatus includes a signal receiving unit 10, an energy detecting unit 20, an energy pattern generating unit 30, an energy pattern storing unit 40, and an energy determining unit 50 .

Here, the signal receiving unit 10 receives any one of the signals communicated between the at least one communication systems based on the Cognitive Radio (CR) technology.

That is, the signal receiving unit 10 performs communication in at least one communication system in order to determine whether or not an operation of the same communication device in the operation desired band is performed in order to perform communication in a frequency band (Open Spectrum band) .

The energy detector 20 detects energy information corresponding to the arbitrary signal received by the signal receiver 10.

That is, the energy detector 20 compares the received signal sensitivity with the energy for the arbitrary signal received in the desired operation band.

The energy detector 20 divides the energy into a section A1 where the energy is higher than the reception sensitivity and a section A2 which is lower than the reception sensitivity based on the reception sensitivity and outputs the energy information .

Here, the energy information shown in FIG. 2 represents an interval A1 higher than the reception sensitivity and an interval A2 lower than the reception sensitivity, for an arbitrary signal received during the set time.

The section A2 lower than the reception sensitivity includes that the energy for a certain signal is absent.

The energy pattern generator 30 generates an energy pattern map (MAP) for a set time based on the energy information detected by the energy detector 20.

That is, the energy pattern generator 30 detects at least one of a reception time and a reception time of the arbitrary signal included in the energy information.

In other words, the energy pattern generating unit 30 generates the energy pattern generating unit 30 based on the repetition period of at least one of the high section A1 and the low section A2 shown in Fig. 2, the reception time for the arbitrary signal, The energy pattern map is obtained.

Here, the reception time for the arbitrary signal may be the high section A1 shown in FIG. 2, and the unreceived time for the arbitrary signal may be the low section A2 shown in FIG. 2, .

That is, the energy pattern map shown in FIG. 3 indicates at least one of the arbitrary signal reception time t1, the non-reception time t2 and the signal reception time t1 or the non-reception time t2 among the energy information for the set period Represents an energy pattern (et) representing one repetition period.

The energy pattern storage unit 40 stores the energy pattern map generated by the energy pattern generation unit 30.

The energy determining unit 50 generates the pattern information stored in the energy pattern storing unit 40 corresponding to the energy pattern map, that is, the arbitrary signal among the at least one communication system when storing the previous energy pattern map The type of an arbitrary communication system can be determined.

That is, the energy determining unit 50 determines whether the energy pattern map corresponds to the periodicity signal of an arbitrary communication system based on the pre-stored pattern information, and when the periodicity signal of the communication system is a scam, If the system has an energy transmission pattern for a beacon or pilot signal transmitted periodically and a small error, it is determined that an arbitrary communication system transmits the arbitrary signal in the corresponding band.

Therefore, the energy determining unit 50 can determine the type of the arbitrary communication system.

When the pattern information corresponding to the energy pattern map does not exist in the pattern information previously stored in the energy pattern storage unit 40, the energy determining unit 50 stores the energy pattern map in the energy pattern storage unit 40 .

The energy detection apparatus according to the embodiment is advantageous in that it can determine the type of a communication system operating in a specific band by using energy information on a received arbitrary signal.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood that various modifications and applications are possible. For example, each component specifically shown in the embodiments can be modified and implemented. It is to be understood that all changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

10: Signal receiving section (10) 20: Energy detecting section
30: Energy pattern generating unit 40: Energy pattern storing unit
50:

Claims (1)

An energy detector for detecting energy information corresponding to any signal received between at least one communication systems based on Cognitive Radio (CR) technology;
An energy pattern generator for generating an energy pattern map (MAP) for a set time based on the energy information; And
Determining an arbitrary communication system that generates the arbitrary signal among the at least one communication system when storing the arbitrary pattern information corresponding to the energy pattern map based on the energy pattern map and the stored pattern information; And an energy detector.

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