Wireless communication system

Abstract

To provide a wireless communication system for transmitting and receiving wideband radio signals used in fifth-generation and later mobile communication systems, which can improve the accuracy of antenna alignment between a transmitting device and a receiving device included in the wireless communication system.SOLUTION: A wireless communication system 1 includes a transmitting device 10 including a transmitting antenna 101 that emits into space a radio signal having a bandwidth BN used in fifth-generation and later mobile communication systems, and a receiving device 20 including a receiving antenna 201 that receives the radio signal. The transmitting device 10 generates a power-amplified transmission signal from a modulated signal having one of N divided bandwidths B1 obtained by dividing the bandwidth BN into N in the frequency domain. An adjustment mechanism 206 of the receiving device 20 adjusts the orientation of the receiving antenna 201 so as to maximize the received power of the received transmission signal.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a technique for improving the accuracy of antenna alignment between a transmitting device and a receiving device included in a wireless communication system for transmitting and receiving wideband wireless signals. [Background technology]

[0002] Toward the realization of high-speed wireless communications (e.g., communication speeds exceeding 100 Gbps), technologies for transmitting and receiving wide-bandwidth wireless signals in high-frequency bands such as millimeter waves, sub-terahertz waves, and terahertz waves are being developed. The fifth-generation mobile communications system (NR) according to the International Mobile Telecommunications-2020 (IMT-2020) standard established by the International Telecommunication Union (ITU) uses wireless signals with a bandwidth of 50-2000 MHz in the high-frequency band of 24.250 GHz-52.600 GHz in Frequency Range 2. For sixth-generation mobile communications systems expected to be introduced to the market around 2030, further widening of the wireless communications bandwidth (e.g., several GHz to several tens of GHz) by utilizing high-frequency bands exceeding 90 GHz, which have not been actively used in mobile communications systems, is being considered. For example, Non-Patent Document 1 can be cited as an example of fifth-generation and sixth-generation mobile communications systems. [Prior art documents] [Non-patent literature]

[0003] [Non-Patent Document 1] NTT DOCOMO, INC., "Docomo 6G White Paper Version 5.0," November 2022 Summary of the Invention [Problem to be solved by the invention]

[0004] According to the Friis propagation law, the received power of an electromagnetic wave at a receiving antenna located at a distance from a transmitting antenna is inversely proportional to the square of the frequency. To account for this propagation loss, highly directional antennas are used for wireless communications in high-frequency bands. Because highly directional antennas have narrow beamwidths, antenna alignment between the transmitting and receiving antennas is required. Antenna alignment is achieved, for example, by rotating the transmitting and / or receiving antennas in azimuth and elevation to maximize the received power.

[0005] When the transmission power of a narrowband signal and a wideband signal is the same, the in-band noise power of the received signal is greater than that of the narrowband signal, resulting in a degradation of the received signal-to-noise ratio (received SNR). This is expected to be a significant degradation in the received signal-to-noise ratio, not only in the fifth-generation mobile communication system (NR) but also in the sixth-generation mobile communication system, which is considering the use of bandwidths much wider than those used in existing technologies. Therefore, the received power of the wideband signal is affected by noise and unstable, making it impossible to accurately measure the received power. This reduces the accuracy of antenna alignment adjustment.

[0006] Therefore, a wireless communication system for transmitting and receiving wideband wireless signals used in fifth generation and later mobile communication systems is disclosed, which can improve the accuracy of antenna alignment between a transmitting device and a receiving device included in the wireless communication system. [Means for solving the problem]

[0007] The technical matters described herein are not intended to explicitly or implicitly limit the invention described in the claims, nor to enable anyone other than those who benefit from the invention (e.g., the applicant and the right holder) to limit the invention described in the claims, but are provided simply to facilitate understanding of the gist of the invention. The outline of the invention from other perspectives can be understood, for example, from the claims at the time of filing of this patent application. The wireless communication system of the present disclosure has a predetermined bandwidth B N The transmitter includes a transmitting antenna for emitting a radio signal having a bandwidth B N A power-amplified transmission signal is generated from a modulated signal having one of the N divided bandwidths B1 obtained by dividing the above into N in the frequency domain. The receiving device adjusts the orientation of the receiving antenna so that the received power of the received transmission signal is maximized. [Effects of the Invention]

[0008] The wireless communication system of the present disclosure is a fifth-generation or later mobile communication system, and uses a transmission signal with high power density to perform antenna alignment, thereby improving the accuracy of antenna alignment between a transmitting device and a receiving device. [Brief explanation of the drawings]

[0009] [Figure 1] 1 shows a configuration of a wireless communication system according to a first embodiment. [Figure 2] 1A and 1B are diagrams for explaining the division of a bandwidth and the power amplification of a portion thereof. (a) A schematic diagram showing the relationship between the bandwidth BN used in fifth-generation and later mobile communication systems and power. (b) A schematic diagram showing the division of bandwidth BN. (c) A schematic diagram showing the power amplification of the divided bandwidth B1. [Figure 3] 1 shows a configuration of a wireless communication system according to a first modification of the first embodiment. [Figure 4] 10 shows the configuration of a wireless communication system according to a second modification of the first embodiment. [Figure 5] 10 shows the configuration of a wireless communication system according to a third modification of the first embodiment. [Figure 6] 1 is a diagram for explaining multiple transmission signals with different center frequencies, (a) a schematic diagram showing the relationship between the bandwidth and power of each of multiple transmission signals with different center frequencies, and (b) a schematic diagram showing the relationship between the center frequency, bandwidth, and power of multiple reception signals corresponding to multiple transmission signals with different center frequencies. DETAILED DESCRIPTION OF THE INVENTION

[0010] An embodiment of a wireless communication system according to the present disclosure will be described with reference to the drawings. Hereinafter, unless otherwise specified, N is a predetermined integer equal to or greater than 2, and M is a predetermined integer equal to or greater than 2. Furthermore, in order to clarify the gist of the embodiment, illustrations and descriptions of components (such as a power supply unit and an intermediate amplifier) ​​that are actually necessary or potentially necessary but are considered non-essential to the embodiment will be omitted. In each figure, the reference numerals and other symbols of some components may be omitted to avoid complication.

[0011] First Embodiment The wireless communication system 1 of the first embodiment shown in FIG. 1 is a wireless communication system that uses a predetermined bandwidth B N (See Figure 2(a). For example, the bandwidth is about several hundred MHz to several tens of GHz.) N The system includes a transmitting device 10 including a transmitting antenna 101 that emits a radio signal having a frequency (f) of preferably 1 GHz or more and 15 GHz or less into space, and a receiving device 20 including a receiving antenna 201 that receives the radio signal from space. The 3 dB beam width of each of the transmitting antenna 101 and the receiving antenna 201 is less than 10 degrees.

[0012] As shown in FIG. 1, a transmitting device 10 includes a transmitting antenna 101 and a bandwidth B Na modulator 102 that generates a modulated signal having a division bandwidth B1 of one (see FIG. 2(b); in the example shown in FIG. 2, the fifth from the low frequency side) of N division bandwidths (see FIG. 2(b); N=10 in the example shown in FIG. 2) obtained by dividing the frequency domain into N, a local signal generator 103 that generates a local signal having a predetermined frequency, a frequency converter 104 that uses the local signal generated by the local signal generator 103 to up-convert the frequency of the modulated signal generated by the modulator 102 to a frequency of a radio signal (the frequency of the radio signal is, for example, 100 GHz or higher, a frequency in the millimeter wave band, a frequency in the sub-terahertz wave band, or a frequency in the terahertz wave band), and a power amplifier 106 that power-amplifies the total power within the division bandwidth B1 of the output signal from the frequency converter 104 (see FIG. 2(c). The power amplifier is configured to amplify the power so that at least the power of the signal received by the receiving device 20 is increased, and preferably, the power amplifier is configured to up-convert the frequency of the radio signal to a frequency of the N The frequency converter 104 includes a signal processor 105 (which amplifies the power of the output signal from the frequency converter 104 so that it is approximately equal to the total power within the division bandwidth B1, and as a specific example, multiplies the total power within the division bandwidth B1 of the output signal from the frequency converter 104 by N). The signal processor 105 includes a filter 105a and a power amplifier 105b. The filter 105a is, for example, a band-pass filter, and suppresses unwanted signals (for example, lower sideband signals) generated by mixing the modulated signal and the local signal. The power amplifier 105b power-amplifies the output signal from the filter 105a as described above.

[0013] As shown in FIG. 1, the receiving device 20 includes a receiving antenna 201, a signal processor 202 that power-amplifies the received signal, a local signal generator 203 that generates a local signal having the same frequency as the local signal generated by the local signal generator 103 of the transmitting device 10, a frequency converter 204 that down-converts the frequency of the output signal from the signal processor 202 using the local signal generated by the local signal generator 203 to the frequency of the modulated signal generated by the modulator 102 of the transmitting device 10, an analyzer 205 that measures the power of the output signal from the frequency converter 204, and an adjustment mechanism 206 that adjusts the orientation of the receiving antenna 201. The signal processor 202 includes a filter 202a and a power amplifier 202b. The power amplifier 202b power-amplifies the received signal. The filter 202a is, for example, a bandpass filter, and suppresses unwanted signals contained in the amplified received signal.

[0014] According to the first embodiment, for example, when the total power within the division bandwidth B1 of the output signal from the frequency converter 104 is multiplied by N, the power of the transmission signal of the bandwidth B1 is multiplied by N. N The power density of the transmitted signal in bandwidth B1 is the same as that of the wireless signal in bandwidth B. N Since the power density of the radio signal is N times that of the radio signal of the first embodiment, the received SNR can be increased. In other words, fluctuations in the power of the output signal from frequency converter 204 due to noise are reduced, so the power of the output signal from frequency converter 204 can be measured more accurately. Furthermore, since the margin for noise is increased, the power of the output signal from frequency converter 204 can be measured accurately even if the distance between transmitting device 10 and receiving device 20 is increased. Therefore, although wireless communication system 1 is a fifth-generation or later mobile communication system, the power of the output signal from frequency converter 204 can be measured more accurately, so the accuracy of antenna alignment between transmitting device 10 and receiving device 20 is improved.

[0015] In a frequency selective fading environment, the divided bandwidth (e.g., bandwidth B) that is less affected by frequency selective fading is used. NAntenna alignment may be performed by transmitting a transmission signal having the n'th divided bandwidth from the lowest frequency among the N divided bandwidths obtained by dividing the above into N in the frequency domain. This makes it possible to achieve highly accurate antenna alignment even in a frequency selective fading environment.

[0016] Antenna alignment is performed as follows. The adjustment mechanism 206 of the receiving device 20 includes a three-axis rotation mechanism that can rotate the receiving antenna 201 on three axes (yaw axis, pitch axis, and roll axis) of the receiving antenna 201, and further includes a drive unit (not shown) that drives the three-axis rotation mechanism, and a controller (not shown) that controls the drive unit based on the power measurement value of the analyzer 205. The orientation of the receiving antenna 201 is determined taking into account the beam width of the transmitting antenna 101. First, by cooperative control of the adjustment mechanism 206 and the analyzer 205 of the receiving device 20, the receiving antenna 201 is rotated in the azimuth direction, and the angle at which the power measurement value of the analyzer 205 of the receiving device 20 is maximized is identified, and the azimuth angle φ of the receiving antenna 201 is determined. RX Next, by cooperative control between the adjustment mechanism 206 of the receiving device 20 and the analyzer 205, the receiving antenna 201 is rotated in the elevation angle direction to identify the angle at which the power measurement value of the analyzer 205 of the receiving device 20 is maximized, and the elevation angle θ of the receiving antenna 201 is adjusted. RX Then, by cooperative control between the adjustment mechanism 206 of the receiving device 20 and the analyzer 205, the receiving antenna 201 is rotated in the direction of the rotation angle to identify the angle at which the power measurement value of the analyzer 205 of the receiving device 20 is maximized, and the rotation angle Θ of the receiving antenna 201 is set. RX is fixed at that angle.

[0017] <Modification 1 of the First Embodiment> The beamwidth of the transmitting antenna 101 used in the sixth-generation mobile communication system is expected to be quite narrow. Therefore, it is desirable to determine the orientation of the transmitting antenna 101 taking into consideration not only the orientation of the receiving antenna 201 but also the beamwidth of the receiving antenna 201. In this case, the receiving device 20 includes a transmitter 207 that transmits an information signal indicating the power measurement value of the analyzer 205 to the transmitting device 10, and the transmitting device 10 includes a receiver 107 that receives the information signal from the receiving device 20 and an adjustment mechanism 106 that adjusts the orientation of the transmitting antenna 101 (see FIG. 3). The adjustment mechanism 106 of the transmitting device 10 includes a three-axis rotation mechanism that can rotate the transmitting antenna 101 about three axes (yaw axis, pitch axis, and roll axis) of the transmitting antenna 101, and further includes a drive unit (not shown) that drives the three-axis rotation mechanism and a controller (not shown) that controls the drive unit based on the power measurement value of the analyzer 205. First, the transmitting antenna 101 is rotated in the azimuth direction by cooperative control between the adjusting mechanism 106 of the transmitting device 10 and the receiver 107, and the angle at which the measured power value indicated by the information signal is maximized is identified. TX Next, the angle at which the measured power value of the information signal is maximized is identified while rotating the transmitting antenna 101 in the elevation angle direction by cooperative control between the adjustment mechanism 106 of the transmitting device 10 and the receiver 107, and the elevation angle θ of the transmitting antenna 101 is set to 0. TX Then, the transmitting antenna 101 is rotated in the direction of the rotation angle by cooperative control between the adjustment mechanism 106 of the transmitting device 10 and the receiver 107, and the angle at which the measured power value indicated by the information signal is maximized is identified, and the rotation angle Θ of the transmitting antenna 101 is set. TX is fixed at that angle.

[0018] <Modification 2 of the First Embodiment> Modification 2 of the first embodiment is a modification of Modification 1 of the first embodiment, and wireless communication system 1 (see FIG. 4 ) of Modification 2 of the first embodiment includes wireless communication device 30A including a configuration of transmitting device 10 as a transmission system and receiving device 20 as a reception system, and wireless communication device 30B including a configuration of transmitting device 10 as a transmission system and receiving device 20 as a reception system. When wireless communication device 30A and wireless communication device 30B use radio signals in the same frequency band, local signal generator 103 of the transmission system and local signal generator 203 of the reception system in wireless communication device 30A may be replaced by a single local signal generator, and similarly, local signal generator 103 of the transmission system and local signal generator 203 of the reception system in wireless communication device 30B may be replaced by a single local signal generator.

[0019] First, the wireless communication device 30A functions as the transmitting device 10, and the wireless communication device 30B functions as the receiving device 20, and antenna alignment is performed as described in Modification 1 of the first embodiment. That is, antenna alignment is performed between the transmitting antenna 101 of the wireless communication device 30A and the receiving antenna 201 of the wireless communication device 30B. In performing the alignment of the transmitting antenna 101 of the wireless communication device 30A, the previously described transmitter 207 can be read as the transmitting system of the wireless communication device 30B (the configuration for transmission from the modulator 102 to the transmitting antenna 101), and the previously described receiver 107 can be read as the receiving system of the wireless communication device 30A (the configuration for transmission from the receiving antenna 201 to the frequency converter 204). In this case, however, antenna alignment between transmitting antenna 101 of wireless communication device 30B and receiving antenna 201 of wireless communication device 30A has not been completed, so for transmitting and receiving the information signal, an antenna having a beam width wider than that of transmitting antenna 101 is temporarily used in place of transmitting antenna 101 of wireless communication device 30B, and an antenna having a beam width wider than that of receiving antenna 201 is temporarily used in place of receiving antenna 201 of wireless communication device 30A, and the information signal is transmitted from wireless communication device 30B to wireless communication device 30A as a signal in a low frequency band used in at least pre-fourth generation mobile communication systems, for example, in a band of several hundred MHz. Although not shown in FIG. 4, in wireless communication device 30A, the information signal is input from frequency converter 204 to adjustment mechanism 106.

[0020] Next, the wireless communication device 30B functions as the transmitting device 10, and the wireless communication device 30A functions as the receiving device 20, and antenna alignment is performed as described in Modification 1 of the first embodiment. That is, antenna alignment is performed between the transmitting antenna 101 of the wireless communication device 30B and the receiving antenna 201 of the wireless communication device 30A. In performing the alignment of the transmitting antenna 101 of the wireless communication device 30B, the previously described transmitter 207 can be read as the transmitting system of the wireless communication device 30A (the configuration for transmission from the modulator 102 to the transmitting antenna 101), and the previously described receiver 107 can be read as the receiving system of the wireless communication device 30B (the configuration for transmission from the receiving antenna 201 to the frequency converter 204). In this case, since the antenna alignment between the transmitting antenna 101 of the wireless communication device 30A and the receiving antenna 201 of the wireless communication device 30B has been completed, there is no need to transmit and receive information signals in the low frequency band using an alternative antenna as described above. Although not shown in FIG. 4, in the wireless communication device 30B, the information signal is input from the frequency converter 204 to the adjustment mechanism 106.

[0021] <Modification 3 of the First Embodiment> In the second modification of the first embodiment, the transmitting antenna 101 and the receiving antenna 201 included in the wireless communication device 30A may be replaced with an antenna module including a T / R (Transmit / Receive) switch 303 and a single antenna 301 connected to the T / R switch 303. Similarly, the transmitting antenna 101 and the receiving antenna 201 included in the wireless communication device 30B may be replaced with an antenna module including a T / R switch 303 and a single antenna 301 connected to the T / R switch 303. Examples of the T / R switch 303 include a high-frequency switch and a duplexer having a single-pole double-throw (SPDT) structure. When each of the wireless communication devices 30A and 30B includes the antenna module (see FIG. 5), in antenna alignment, one of the wireless communication devices 30A and 30B functions as the transmitting device 10, and the other of the wireless communication devices 30A and 30B functions as the receiving device 20.

[0022] <Second Embodiment> Here, the differences between the first embodiment and the second embodiment will be described. For other technical matters, refer to the description of the first embodiment. By this reference, the description of the first embodiment excluding the differences is explicitly incorporated herein. According to the wireless communication system 1 of the second embodiment, unlike the first embodiment, the local signal generator 103 of the transmission device 10 generates M types of local signals having different frequencies from each other according to the passage of time. For example, the local signal generator 103 of the transmission device 10 generates a local signal having M types of frequencies by shifting the frequency by Δf according to the passage of time Δt. In this case, the frequency f of the local signal at time t is represented by f(t0 + nΔt ≤ t < t0 + (n + 1)Δt) = f0 + nΔf. t0 is the start time, f0 is the initial frequency, and n ∈ {0, 1,..., M - 1}. Of course, for example, by synchronizing the time between the transmission device 10 and the reception device 20 using GPS (Global Positioning System), the timing of the frequency shift is matched. The shift amount Δf is preset for each of the transmission device 10 and the reception device 20.

[0023] The transmitting device 10 generates the aforementioned transmit signals using each of the M types of local signals generated by the local signal generator 103, so that the transmitting device 10 generates M types of transmit signals (see FIG. 6(a). In the example shown in FIG. 6, M=5). The analyzer 205 of the receiving device 20 identifies the received signal with the maximum power among the M types of received signals corresponding to the M types of transmit signals generated in response to the M types of local signals. In the example shown in FIG. 6(b), the received signal with the center frequency f0+3Δf is identified as the received signal with the maximum power. The adjustment mechanism 206 of the receiving device 20 adjusts the orientation of the receiving antenna 201 so that the power measured by the analyzer 205 of the output signal from the frequency converter 204 corresponding to the identified received signal is maximized. In this way, by identifying the received signal with the maximum power among the M types of received signals, the effects of frequency selective fading can be reduced, and therefore the accuracy of antenna alignment between the transmitting device 10 and the receiving device 20 is improved.

[0024] <Addendum> The notification of information is not limited to the aspects / embodiments described in the present disclosure and may be performed using other methods. For example, the notification of information may be performed by physical layer signaling (e.g., Downlink Control Information (DCI) and Uplink Control Information (UCI)), higher layer signaling (e.g., Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, and broadcast information (Master Information Block (MIB) and System Information Block (SIB))), other signals, or a combination thereof. Furthermore, the RRC signaling may be referred to as an RRC message, and may be, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, or the like.

[0025] Each aspect / embodiment described in the present disclosure may be any of the following: LTE (Long Term Evolution), LTE-Advanced (LTE-A), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system), 6th generation mobile communication system (6G), xth generation mobile communication system (xG) (xG (x is, for example, an integer or decimal number)), FRA (Future Radio Access), NR (new Radio), New radio access (NX), Future generation radio access (FX), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE The present invention may be applied to at least one of systems using 802.20, UWB (Ultra-Wideband), Bluetooth (registered trademark), or other appropriate systems, and next-generation systems that are extended, modified, created, or defined based on these systems. The present invention may also be applied to a combination of multiple systems (e.g., a combination of at least one of LTE and LTE-A with 5G).

[0026] The order of the procedures, sequences, flowcharts, etc. of each aspect / embodiment described in this disclosure may be changed unless it is consistent. For example, the methods described in this disclosure present elements of various steps using an example order, and are not limited to the particular order presented.

[0027] Input and output information may be stored in a specific location (for example, memory) or may be managed using a management table. Input and output information may be overwritten, updated, or added to. Output information may be deleted. Input information may be sent to another device.

[0028] The determination may be made based on a value represented by one bit (0 or 1), a Boolean value (true or false), or a numerical comparison (e.g., comparison with a predetermined value).

[0029] Instructions, information, etc. may be transmitted or received over a transmission medium. For example, if software is transmitted from a website, server, or other remote source using wired technologies (such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL)), and / or wireless technologies (such as infrared, microwave), then these wired and / or wireless technologies are included within the definition of transmission media.

[0030] Information, signals, etc. described in this disclosure may be represented using any of a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc. may be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof. Terms described in this disclosure and terms necessary for understanding this disclosure may be replaced with terms having the same or similar meanings. For example, at least one of a channel and a symbol may be a signal (signaling). A signal may also be a message. A component carrier (CC) may also be referred to as a carrier frequency, a cell, a frequency carrier, etc.

[0031] As used in this disclosure, the terms "system" and "network" are used interchangeably.

[0032] The terms "determining" and "determining" can encompass a wide variety of actions. "Determining" can include, for example, judging, calculating, computing, processing, deriving, investigating, looking up, searching, inquiring (e.g., searching in a table, database, or other data structure), ascertaining, and so forth. "Determining" can also include receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, accessing (e.g., accessing data in memory), and so forth. Furthermore, "judgment" and "decision" can include regarding resolving, selecting, choosing, establishing, comparing, etc. as having been "judged" or "decided." In other words, "judgment" and "decision" can include regarding some action as having been "judged" or "decided." Furthermore, "judgment (decision)" can be interpreted as "assuming," "expecting," "considering," etc.

[0033] The terms "connected," "coupled," or any variation thereof, refer to any direct or indirect connection or coupling between two or more elements, and may include the presence of one or more intermediate elements between two elements that are "connected" or "coupled" to each other. The coupling or connection between elements may be physical, logical, or a combination thereof. For example, "connected" may be read as "access." As used in this disclosure, two elements may be considered to be "connected" or "coupled" to each other using one or more wires, cables, and / or printed electrical connections, as well as electromagnetic energy having wavelengths in the radio frequency range, microwave range, and optical (both visible and invisible) range, as some non-limiting and non-exhaustive examples.

[0034] As used in this disclosure, the phrase "based on" does not mean "based only on," unless expressly stated otherwise. In other words, the phrase "based on" means both "based only on" and "based at least on."

[0035] As used in this disclosure, any reference to an element using a designation such as "first," "second," etc. does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, a reference to a first and a second element does not imply that only two elements may be employed or that the first element must in some way precede the second element.

[0036] When used in this disclosure, the terms "include," "including," and variations thereof are intended to be inclusive, similar to the term "comprising." Furthermore, when used in this disclosure, the term "or" is not intended to be an exclusive or.

[0037] The "maximum transmit power" may mean the maximum value of the transmit power, may mean the nominal UE maximum transmit power, or may mean the rated UE maximum transmit power.

[0038] Where articles are added by translation, such as a, an and the in English, the disclosure may include that the noun following these articles is in the plural form.

[0039] The technical features disclosed in the various embodiments and their modifications described above are not necessarily mutually exclusive, and technical features of one embodiment or its modifications may be applied to technical features of another embodiment or its modifications, provided that there is no contradiction from a technical viewpoint.

[0040] While the present invention has been described with reference to exemplary embodiments, those skilled in the art will recognize that various changes can be made and equivalents can be substituted for elements thereof without departing from the scope of the invention. Furthermore, many modifications can be made to adapt a particular system, device, or component thereof to the teachings of the present invention without departing from the essential scope of the invention. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed for carrying out this invention, but rather that the invention will include all embodiments falling within the scope of the appended claims.

[0041] Furthermore, the use of terms such as "first," "second," and the like (ordinal numerals), if any, does not denote order or importance; terms such as "first," "second," and the like (ordinal numerals) are used to distinguish elements. The terminology used herein is for the purpose of describing embodiments and is not intended to limit the invention in any way. The term "comprises" and its conjugations, when used in this specification and / or the appended claims, reveal the presence of the stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof. The term "and / or" includes any and all combinations of one or more of the associated listed elements, if any. In the claims and the specification, unless otherwise specified, the use of words such as "connected," "coupled," "joined," "connected," or cognate words and all forms thereof does not necessarily negate the presence of one or more intermediate elements between two items, e.g., "connected" or "coupled" to each other or "connected" to each other. In the claims and the specification, the term "optional", if any, unless otherwise specified, should be understood as a term that represents the same meaning as the universal symbol ∀.

[0042] Unless otherwise specified, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Furthermore, terms such as those defined in commonly used dictionaries should be interpreted to have a meaning consistent with their meaning in the context of the relevant art and this disclosure, and should not be interpreted ideally or excessively formally unless explicitly defined.

[0043] It will be understood that in describing the present invention, many techniques and steps are disclosed. Each of these has distinct advantages, and each can be used in combination with one or more, or in some cases all, of the other disclosed techniques. Therefore, to avoid cluttering, this specification will refrain from describing every possible combination of individual techniques or steps. Nevertheless, the specification and claims should be read with the understanding that such combinations are fully within the scope of the present invention and claims.

[0044] The corresponding structure, material, acts, and equivalents of all functional elements combined with means or steps in the following claims are intended to include the structure, material, or acts, if any, that perform the function in combination with other elements.

[0045] Although the present invention has been described above with reference to exemplary embodiments, it is not limited to these embodiments. Various modifications and variations are possible without departing from the spirit of the present invention. The selected and described embodiments are intended to illustrate the principles of the present invention and its practical application. The present invention may be used in various embodiments with various modifications and variations, which are determined according to the expected use. All such modifications and variations are intended to be included within the scope of the present invention, as defined by the appended claims, and are intended to be accorded the same protection when interpreted in accordance with the breadth that is fairly, legally, and equitably to be given. [Explanation of symbols]

[0046] 1. Wireless communication systems 10 Transmitting device 101 Transmitting Antenna 102 Modulator 103 Local Signal Generator 104 Frequency Converter 105 Signal Processor 105a filter 105b Power Amplifier 106 Adjustment mechanism 107 Receiver 20 Receiving device 201 Receiving antenna 202 Signal processor 202a filter 202b Power Amplifier 203 Local Signal Generator 204 Frequency Converter 205 Analyzer 206 Adjustment mechanism 207 Transmitter 30A Wireless Communication Equipment 30B Wireless communication equipment 301 Antenna 303 T / R switch

Claims

1. A predetermined bandwidth B used in fifth-generation and later mobile communication systems N a transmitting device including a transmitting antenna that emits a radio signal having a frequency of 100 kHz into space, and a receiving device including a receiving antenna that receives the radio signal, and the system is capable of aligning the transmitting antenna with the receiving antenna, The transmitting device the transmitting antenna; The bandwidth B N Any one of the N divided bandwidths obtained by dividing the above into N in the frequency domain, B 1 where N is a predetermined integer satisfying 2≦N; a first local signal generator that generates a local signal; a first frequency converter that up-converts the frequency of the modulated signal to the frequency of the radio signal using the local signal from a first local signal generator; The split bandwidth B of the output signal from the first frequency converter 1 a first signal processor for amplifying the total power in the Including, The receiving device the receiving antenna; a second signal processor that amplifies the received signal; a second local signal generator that generates a local signal having the same frequency as the local signal from the first local signal generator; a second frequency converter that down-converts the frequency of the output signal from the second signal processor to the frequency of the modulated signal using the local signal from a second local signal generator; an analyzer for measuring the power of the output signal from the second frequency converter; an adjustment mechanism for adjusting the orientation of the receiving antenna; Including, the transmitting antenna emits the output signal from the first signal processor into space as a transmission signal; the receiving antenna receives the transmitted signal as the received signal; the adjustment mechanism of the receiving device adjusts the orientation of the receiving antenna so that the power measured by the analyzer is maximized. Wireless communication system.

2. 2. The wireless communication system according to claim 1, the first local signal generator generates M types of local signals having different frequencies over time, where M is a predetermined integer satisfying 2≦M; the analyzer identifies the received signal having the maximum power among the M types of received signals corresponding to the M types of transmitted signals generated in response to the M types of local signals; the adjustment mechanism of the receiving device adjusts the orientation of the receiving antenna so that the power measured by the analyzer of the output signal from the second frequency converter corresponding to the identified received signal is maximized. A wireless communication system comprising:

3. 3. The wireless communication system according to claim 1, the receiving device includes a transmitter that transmits to the transmitting device an information signal indicative of the power measured by the analyzer; the transmitting device includes a receiver for receiving the information signal from the receiving device, and an adjustment mechanism for adjusting the orientation of the transmitting antenna; The adjustment mechanism of the transmitting device adjusts the orientation of the transmitting antenna so that the power measured by the analyzer, represented by the information signal received from the receiving device, is maximized. A wireless communication system comprising:

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