Transceiver and signal processing device for transmitting and receiving signals on multiple frequency bands in wireless communication system

Abstract

The present disclosure relates to a 5th generation (5G) or pre-5G communication system that will be provided to support higher data rates beyond 4th generation (4G) communication systems such as long term evolution (LTE). A transceiver in a wireless communication system may include: a first circuit configured to up-convert a first digital signal corresponding to a first frequency band and up-convert a second digital signal corresponding to a second frequency band using the same intermediate frequency (IF) frequency, and analog-convert the up-converted signals into a first analog signal and a second analog signal; a second circuit configured to up-convert the first analog signal and the second analog signal to generate a first radio frequency (RF) signal of the first frequency band and a second RF signal of the second frequency band, and output an RF signal of a third bandwidth including the first RF signal and the second RF signal; and a third circuit configured to separate the RF signal of the third bandwidth into the first RF signal and the second RF signal, adjust the phase of the first RF signal to perform beamforming in the first frequency band, and adjust the phase of the second RF signal to perform beamforming in the second frequency band.

Description

Technical Field

[0001] The present disclosure relates to a wireless communication system, for example, to a method and apparatus for transmitting and receiving signals in a plurality of frequency bands in a wireless communication system. Background Art

[0002] In order to meet the increased demand for wireless data traffic since the deployment of the fourth generation (4G) communication system, efforts have been made to develop improved fifth generation (5G) or pre-5G communication systems. Therefore, 5G or pre-5G communication systems may also be referred to as "beyond 4G networks" or "post-Long Term Evolution (LTE) systems".

[0003] 5G communication systems are considered to be implemented in higher frequency (millimeter wave) bands (e.g., 60 GHz bands) in order to achieve higher data rates. In order to reduce the propagation loss of radio waves and increase the transmission distance, beamforming, massive multiple-input multiple-output (MIMO), full-dimensional MIMO (FD-MIMO), array antennas, analog beamforming, and massive antenna technologies are discussed in 5G communication systems.

[0004] In addition, in the 5G communication system, development of system network improvements is underway based on advanced small cells, cloud radio access networks (RAN), ultra-dense networks, device-to-device (D2D) communication, wireless backhaul, mobile networks, collaborative communications, coordinated multi-point (CoMP), receiving-end interference cancellation, etc.

[0005] In 5G systems, hybrid frequency shift keying (FSK) and quadrature amplitude modulation (FQAM) with sliding window superposition coding (SWSC) have been developed as advanced coded modulation (ACM), and filter bank multi-carrier (FBMC), non-orthogonal multiple access (NOMA), and sparse code multiple access (SCMA) as advanced access technologies.

[0006] The 5G system defines multiple usable frequency bands. Network operators are able to operate the 5G system in at least one frequency band. If multiple frequency bands are used to provide communication services, it may be necessary to simultaneously send or receive signals via the multiple frequency bands. In this case, a transmission or reception scheme for effectively processing the signals may be required.

[0007] The above information is presented as background information only to assist in understanding the present disclosure. No determination has been made, and no assertion has been made, as to whether any of the above might be applicable as prior art with respect to the present disclosure. Summary of the invention

[0008] Solution to the problem

[0009] Embodiments of the present disclosure provide a method and apparatus for supporting multiple frequency bands in a wireless communication system.

[0010] Embodiments of the present disclosure provide a method and apparatus for simultaneously transmitting or receiving signals in multiple frequency bands in a wireless communication system.

[0011] According to an example embodiment of the present disclosure, a transceiver in a wireless communication system may include: a first circuit configured to up-convert a first digital signal corresponding to a first frequency band and a second digital signal corresponding to a second frequency band using the same intermediate frequency (IF) frequency, and analog-convert the up-converted signals into a first analog signal and a second analog signal; a second circuit configured to up-convert the first analog signal and the second analog signal to generate a first radio frequency (RF) signal of a first frequency band and a second RF signal of a second frequency band, and output an RF signal of a third bandwidth including the first RF signal and the second RF signal; and a third circuit configured to separate the RF signal of the third bandwidth into the first RF signal and the second RF signal, adjust the phase of the first RF signal to perform beamforming in the first frequency band, and adjust the phase of the second RF signal to perform beamforming in the second frequency band.

[0012] According to an example embodiment of the present disclosure, a signal processing device for a transceiver in a wireless communication system may include: a conversion circuit configured to: up-convert a first digital signal corresponding to a first frequency band and up-convert a second digital signal corresponding to a second frequency band using the same intermediate frequency (IF) frequency; and perform analog conversion on the up-converted signals to generate a first analog signal and a second analog signal.

[0013] According to an example embodiment of the present disclosure, a signal processing device for a transceiver in a wireless communication system may include: at least one mixer configured to up-convert a first analog signal and a second analog signal of the same intermediate frequency (IF) frequency to generate a first radio frequency (RF) signal of a first frequency band and a second RF signal of a second frequency band; and a combiner including a circuit configured to generate an RF signal of a third bandwidth including the first RF signal and the second RF signal.

[0014] According to an example embodiment of the present disclosure, a signal processing device for a transceiver in a wireless communication system may include: a separator, including a circuit configured to separate a radio frequency (RF) signal of a third bandwidth into a first RF signal of a first bandwidth corresponding to a first frequency band and a second RF signal of a second bandwidth corresponding to a second frequency band; and at least one phase modulator, the phase modulator including a circuit configured to adjust the phase of the first RF signal to perform beamforming in the first frequency band and adjust the phase of the second RF signal to perform beamforming in the second frequency band.

[0015] According to an example embodiment of the present disclosure, a method for operating a transceiver in a wireless communication system may include: converting a first digital signal corresponding to a first frequency band and a second digital signal corresponding to a second frequency band into a first analog signal corresponding to the first frequency band and a second analog signal corresponding to the second frequency band; up-converting the first analog signal and the second analog signal to generate a first radio frequency (RF) signal of the first frequency band and a second RF signal of the second frequency band; separating an RF signal of a third bandwidth including the first RF signal and the second RF signal into the first RF signal and the second RF signal; adjusting the phase of the first RF signal to perform beamforming in the first frequency band; and adjusting the phase of the second RF signal to perform beamforming in the second frequency band.

[0016] The methods and apparatus according to various example embodiments of the present disclosure may reduce the size of a circuit required when transmitting and receiving signals via multiple frequency bands.

[0017] Effects that may be obtained from the present disclosure may not be limited to the above-mentioned effects, and other effects that are not mentioned may be clearly understood by those skilled in the art to which the present disclosure belongs through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and other aspects, features and advantages of certain embodiments of the present disclosure will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which:

[0019] Figure 1 is a diagram illustrating an example wireless communication system in accordance with various embodiments;

[0020] Figure 2 is a block diagram illustrating an example configuration of a base station in a wireless communication system according to various embodiments;

[0021] Figure 3 is a block diagram showing an example configuration of a terminal in a wireless communication system according to various embodiments;

[0022] Figure 4 is a block diagram showing an example configuration of a communication unit in a wireless communication system according to various embodiments;

[0023] Figure 5 is a diagram illustrating an example frequency conversion relationship between signals in a wireless communication system according to various embodiments;

[0024] Fig. 6A is a diagram showing an example configuration of a front end in a wireless communication system according to various embodiments;

[0025] Figure 6B is a diagram showing an example configuration of a front end in a wireless communication system according to various embodiments;

[0026] Fig. 7A is a diagram showing an example configuration of a frequency generator and a frequency converter in a wireless communication system according to various embodiments;

[0027] Figure 7B is a diagram showing an example configuration of a frequency generator and a frequency converter in a wireless communication system according to various embodiments;

[0028] Fig. 8A is a diagram showing an example configuration of a beamforming unit in a wireless communication system according to various embodiments;

[0029] Figure 8B is a diagram showing an example configuration of a beamforming unit in a wireless communication system according to various embodiments;

[0030] Fig. 9A is a diagram showing an example connection structure between a frequency converter and a beamforming unit in a wireless communication system according to various embodiments;

[0031] Fig. 9B is a diagram showing an example connection structure between a frequency converter and a beamforming unit in a wireless communication system according to various embodiments;

[0032] Fig.10 is a flow chart illustrating example operations for transmitting signals via multiple frequency bands in a wireless communication system according to various embodiments;

[0033] Fig.11A is a diagram showing an example of simultaneously using a plurality of frequency bands in a wireless communication system according to various embodiments; and

[0034] Fig. 11B is a diagram showing an example of simultaneously using a plurality of frequency bands in a wireless communication system according to various embodiments. DETAILED DESCRIPTION

[0035] The terms used in the present disclosure are used to describe various example embodiments and are not intended to limit the present disclosure. Singular expressions may include plural expressions unless they are clearly different in context. Unless otherwise defined, all terms used herein, including technical terms and scientific terms, have the same meanings as those commonly understood by those skilled in the art to which the present disclosure belongs. These terms defined in commonly used dictionaries may be interpreted as having meanings equivalent to the contextual meanings in the relevant technical field, and unless clearly defined in the disclosure, should not be interpreted as having ideal or overly formal meanings. In some cases, even the terms defined in the present disclosure should not be interpreted as excluding embodiments of the present disclosure.

[0036] Hereinafter, various exemplary embodiments of the present disclosure will be described based on a hardware method by way of example. However, various embodiments of the present disclosure include technologies using both hardware and software, and thus various embodiments of the present disclosure do not exclude the software perspective.

[0037] The present disclosure relates to a method and apparatus for transmitting or receiving signals in multiple frequency bands in a wireless communication system. For example, the present disclosure generally relates to a technology for simultaneously transmitting or receiving signals via multiple frequency bands in a wireless communication system.

[0038] Hereinafter, for the convenience of description, terms related to signals, terms related to channels, terms related to control information, terms related to network entities, terms related to elements of devices, etc. are provided. Therefore, the present disclosure is not limited to the terms used in the description, and other terms having the same technical meanings may be used.

[0039] In the present disclosure, the terms "physical channel" and "signal" may be used interchangeably with data or control signal. For example, although physical downlink shared channel (PDSCH) is a term that may refer to, for example, a physical channel via which data is transmitted, PDSCH may also be used to refer to data. In the present disclosure, the expression "transmission physical channel" may be understood to have the same or similar meaning as the expression "transmission of data or signal via a physical channel".

[0040] In the disclosure provided below, higher signaling may refer to, for example, a method in which a base station transmits a signal to a terminal using a downlink data channel in a physical layer, or a method in which a terminal transmits a signal to a base station using an uplink data channel in a physical layer. Higher signaling may be understood to include, for example, radio resource control (RRC) signaling or a medium access control (MAC) control element (CE).

[0041] Furthermore, in the present disclosure, the expression "greater than" or "less than" is used to determine whether a predetermined condition is satisfied or reached. However, these expressions are only used to represent examples and do not exclude the expression "greater than or equal to" or "less than or equal to". A condition including the expression "greater than or equal to" may be replaced with a condition including the expression "greater than", a condition including the expression "less than or equal to" may be replaced with a condition including the expression "less than", and a condition including the expression "greater than or equal to and less than" may be replaced with a condition including the expression "greater than and less than or equal to".

[0042] Although the present disclosure describes various exemplary embodiments using terminology according to various communication standards (eg, the 3rd Generation Partnership Project (3GPP)), these embodiments are merely examples. The various exemplary embodiments may be easily modified and applied to other communication systems.

[0043] Figure 1is a diagram illustrating an example wireless communication system in accordance with various embodiments. Figure 1 Base station 110, terminal 120, and terminal 130 are shown as some nodes using wireless channels in a wireless communication system. Figure 1 A single base station is shown, but another base station that is the same as or similar to base station 110 may also be included.

[0044] The base station 110 may include a network infrastructure that provides wireless access to the terminals 120 and 130. The base station 110 may have a coverage area defined by a predetermined geographical area based on a distance over which the base station 110 can transmit signals. In addition to a base station, the base station 110 may also be referred to as, for example, an access point (AP), an eNodeB (eNB), a fifth generation node (5G node), a next generation node B (gNB), a wireless point, a transmission / reception point (TRP), or other terms having technical meanings equivalent thereto.

[0045] Each of the terminals 120 and 130 may include a device used by a user, and may perform communication with the base station 110 via a wireless channel. Depending on the situation, at least one of the terminals 120 and 130 may operate without user manipulation. For example, at least one of the terminals 120 and 130 may include a device that performs machine type communication (MTC) and may not be carried by a user. In addition to the terminal, each of the terminals 120 and 130 may be referred to as, for example, but not limited to, a user equipment (UE), a mobile station, a subscriber station, a remote terminal, a wireless terminal, a user device, or other terms having equivalent meanings thereto.

[0046] The base station 110, the terminal 120, and the terminal 130 may transmit and receive wireless signals in a millimeter wave (mmWave) frequency band (e.g., 28 GHz, 30 GHz, 38 GHz, and 60 GHz). In order to improve the channel gain, the base station 110, the terminal 120, and the terminal 130 may perform beamforming. Beamforming may include transmit beamforming and receive beamforming. For example, the base station 110, the terminal 120, and the terminal 130 may assign directivity to a transmitted signal or a received signal. The base station 110 and the terminals 120 and 130 may select service beams 112, 113, 121, and 131 via a beam search process or a beam management process. After selecting the service beams 112, 113, 121, and 131, subsequent communications may be performed using resources that are in a quasi-co-location (QCL) relationship with the resources used to transmit the service beams 112, 113, 121, and 131.

[0047] If the large-scale characteristics of the channel through which the symbols are transmitted on the first antenna port can be inferred from the channel through which the symbols are transmitted on the second antenna port, it is estimated that there is a QCL relationship between the first antenna port and the second antenna port. For example, the large-scale characteristics may include at least one of delay spread, Doppler spread, Doppler shift, average gain, average delay, and spatial receiver parameters.

[0048] Figure 2 is a block diagram illustrating an example configuration of a base station in a wireless communication system according to various embodiments. Figure 2 The configuration of may be understood as the configuration of the base station 110. The term "unit" or "device" used hereinafter may refer to a unit for processing at least one function or operation and may be implemented as hardware, software, or a combination of hardware and software.

[0049] refer to Figure 2 The base station may include a wireless communication unit (eg, including a wireless communication circuit) 210, a backhaul communication unit (eg, including a backhaul circuit) 220, a storage unit 230, and a controller (eg, including a processing circuit) 240.

[0050] The wireless communication unit 210 may include various communication circuits and perform functions for transmitting or receiving signals via wireless channels. For example, the wireless communication unit 210 performs a conversion function between a baseband signal and a bit stream according to the physical layer standard of the system. For example, in the case of data transmission, the wireless communication unit 210 generates complex symbols by encoding and modulating the transmission bit stream. In addition, in the case of data reception, the communication unit 210 recovers the reception bit stream by demodulating and decoding the baseband signal.

[0051] In addition, the wireless communication unit 210 up-converts the baseband signal into a radio frequency (RF) band signal and transmits the signal via an antenna, and down-converts the RF band signal received via the antenna into a baseband signal. The wireless communication unit 210 may include various circuits, including, for example, a transmit filter, a receive filter, an amplifier, a mixer, an oscillator, a digital-to-analog converter (DAC), an analog-to-digital converter (ADC), etc. In addition, the wireless communication unit 210 may include multiple transmit / receive paths. In addition, the wireless communication unit 210 may include at least one antenna array containing multiple antenna elements.

[0052] From a hardware perspective, the wireless communication unit 210 may be configured with a digital unit and an analog unit. The analog unit may include a plurality of subunits depending on operating power, operating frequency, etc. The digital unit may be implemented as at least one processor (eg, a digital signal processor (DSP)).

[0053] The wireless communication unit 210 can transmit and receive signals as described above. Accordingly, the whole or a part of the wireless communication unit 210 can be referred to as a "transmitter", "receiver" or "transceiver". In addition, the transmission and reception performed via a wireless channel described in the following description can be understood to refer to the above-mentioned processing performed by the wireless communication unit 210.

[0054] The backhaul communication unit 220 may include various backhaul circuits and provide an interface for performing communication with other nodes within the network. For example, the backhaul communication unit 220 converts a bit stream sent from a base station to another node (e.g., another access node, another base station, a higher node, a core network, etc.) into a physical signal, and converts a physical signal received from another node into a bit stream.

[0055] The storage unit 230 may store data such as basic programs, applications, configuration information, etc. for operating the base station. The storage unit 230 may be implemented as a volatile memory, a nonvolatile memory, or a combination of a volatile memory and a nonvolatile memory. The storage unit 230 may provide the data stored therein in response to a request from the controller 240.

[0056] The controller 240 may include various processing circuits and control the overall operation of the base station. For example, the controller 240 may send and receive signals via the wireless communication unit 210 or the backhaul communication unit 220. In addition, the controller 240 records data in the storage unit 230 and reads the recorded data. The controller 240 may perform the functions of the protocol stack required by the communication standard. Depending on the implementation, the protocol stack may be included in the wireless communication unit 210. The controller 240 may include at least one processor. According to various embodiments, the controller 240 may perform control so that the base station performs operations according to the various embodiments described below.

[0057] Figure 3 is a block diagram illustrating an example configuration of a terminal in a wireless communication system according to various embodiments. Figure 3 The illustrated configuration may be understood as a configuration of the terminal 120. The term "unit" or "device" used hereinafter may refer to a unit for processing at least one function or operation and may be implemented as hardware, software, or a combination of hardware and software.

[0058] refer to Figure 3 , the terminal includes a communication unit (eg, including a communication circuit) 310 , a storage unit 320 , and a controller (eg, including a processing circuit) 330 .

[0059] The communication unit 310 may include various communication circuits, and perform the function of sending or receiving signals via a wireless channel. For example, the wireless communication unit 310 performs the function of converting between baseband signals and bit streams according to the physical layer standard of the system. For example, in the case of data transmission, the communication unit 310 generates complex symbols by encoding and modulating the transmission bit stream. In addition, in the case of data reception, the communication unit 310 recovers the reception bit stream by demodulating and decoding the baseband signal. In addition, the communication unit 310 up-converts the baseband signal into an RF band signal and transmits the signal via an antenna, and down-converts the RF band signal received via the antenna into a baseband signal. For example, the communication unit 310 may include a transmission filter, a reception filter, an amplifier, a mixer, an oscillator, a DAC, an ADC, etc.

[0060] In addition, the communication unit 310 may include multiple transmit / receive paths. In addition, the communication unit 310 may include at least one antenna array containing multiple antenna elements. From a hardware perspective, the communication unit 310 may include digital circuits and analog circuits (e.g., radio frequency integrated circuits (RFIC)). The digital circuits and analog circuits may be implemented as a single package. In addition, the communication unit 310 may include multiple RF chains. In addition, the communication unit 310 may perform beamforming.

[0061] The communication unit 310 can send and receive signals as described above. Accordingly, the whole or a part of the communication unit 310 can be referred to as a "transmitter", "receiver" or "transceiver". In addition, the transmission and reception performed via a wireless channel described in the following description can be understood to refer to the above-mentioned processing performed by the communication unit 310.

[0062] The storage unit 320 may store data for operating the terminal, such as basic programs, applications, configuration information, etc. The storage unit 320 may be implemented as a volatile memory, a nonvolatile memory, or a combination of a volatile memory and a nonvolatile memory. The storage unit 320 may provide data stored therein in response to a request from the controller 330.

[0063] The controller 330 may include various processing circuits and control the overall operation of the terminal. For example, the controller 330 may perform signal transmission and reception via the communication unit 310. In addition, the controller 330 records data in the storage unit 320 and reads the recorded data. The controller 330 may perform the functions of the protocol stack required by the communication standard. The controller 330 may include at least one processor or microprocessor, or may be a part of a processor. In addition, a part of the communication unit 310 and the controller 330 may be referred to as a communication processor (CP). According to various embodiments, the controller 330 may perform control so that the terminal performs operations according to the various embodiments described below.

[0064] Figure 4 is a block diagram illustrating an example configuration of a communication unit in a wireless communication system according to various embodiments. Figure 4 Shows Figure 2 The wireless communication unit 210 or Figure 3 An example detailed configuration of the communication unit 310 is shown in FIG.

[0065] refer to Figure 4 , the communication unit may include a modem 410 , a front end 420 , a frequency generator 430 , a frequency converter 440 , and a beamforming unit (eg, including a beamforming circuit) 450 .

[0066] The modem 410 may perform channel coding and modulation of the transmitted bits to generate a baseband digital signal. The modem 410 may perform demodulation and channel decoding of the baseband digital signal to recover the received bits. For example, if the signal is transmitted simultaneously via a plurality of frequency bands, the modem 410 may generate a baseband signal including signals corresponding to the plurality of frequency bands, respectively.

[0067] The front end 420 may include various circuits and convert the baseband signal generated by the modem 410 into an analog signal. The front end 420 may convert the analog signal provided from the frequency converter 440 into a digital signal. The front end 420 may have a broadband characteristic capable of processing a broadband signal including a signal transmitted or received via a plurality of frequency bands. The broadband signal may be a signal including a bandwidth greater than or equal to the sum of the bandwidths of two or more frequency bands. The front end 420 may be referred to as a digital analog front end (DAFE).

[0068] The frequency generator 430 may generate at least one frequency signal (e.g., a sine wave signal) for frequency conversion by the frequency converter 440. The frequency generator 430 may generate a plurality of frequency signals corresponding to a plurality of frequency bands supported by the communication unit. The number of frequency signals output from the frequency generator 430 may vary depending on the number of frequency bands used for the current communication.

[0069] The frequency converter 440 may up-convert the signal provided from the front end 420 into an RF signal of a corresponding frequency band. The frequency converter 440 may down-convert the RF signal provided from the beamforming unit 450. If a plurality of frequency bands are used simultaneously, the frequency converter 440 may separate the provided wideband signal into signals for the corresponding frequency bands, may convert the frequencies, and combine the frequency-converted signals into a wideband signal.

[0070] The beamforming unit 450 may include various circuits and perform transmit beamforming on the signal provided from the frequency converter 440, and may perform receive beamforming on the signal received via the antenna. If a plurality of frequency bands are used simultaneously, the beamforming unit 450 may shift the phase of the signal, separate the wideband signal into signals of the corresponding frequency bands, and combine the signals of the corresponding frequency bands into the wideband signal.

[0071] Figure 4 The elements shown in FIG. 5 may be implemented as separate integrated circuit (IC) chips. Figure 4 At least two of the shown elements may be implemented as a single IC chip.

[0072] Figure 4 The structure shown can be used to process signals of two or more frequency bands. In order to process signals of two or more frequency bands, two chains can be used. According to various embodiments, at least one of the series of components included in the two chains can be configured to process signals belonging to two frequency bands via a single operation. For example, in at least one of the series of signal processing operations, multiple frequency bands can be processed as a single broadband signal, and therefore, it can be considered as a single signal. An element for separating a single signal into signals for corresponding frequency bands and an element for combining signals for corresponding frequency bands into a single signal can be included.

[0073] Based on reference Figure 4 The structure described can support multiple frequency bands. Signals sent or received via multiple frequency bands can be converted on the frequency axis, such as Figure 5 shown.

[0074] Figure 5 is a diagram illustrating an example frequency conversion relationship between signals in a wireless communication system according to various embodiments.

[0075] refer to Figure 5, the first baseband signal 510a and the second baseband signal 510b can be up-converted into the first IF signal 520a and the second IF signal 520b respectively. The first IF signal 520a and the second IF signal 520b can belong to the same IF frequency band. The first IF signal 520a and the second IF signal 520b can be up-converted into the first RF signal 530a and the second RF signal 530b. The first RF signal 530a can belong to the first frequency band, and the second RF signal 530b can belong to the second frequency band. Similarly, the first RF signal 530a and the second RF signal 530b can be down-converted into the first IF signal 520a and the second IF signal 520b. The first IF signal 520a and the second IF signal 520b can be down-converted into the first baseband signal 510a and the second baseband signal 510b.

[0076] Hereinafter, an exemplary structure of each element of the communication unit will be described. Fig. 6A , Figure 6B , Fig. 7A , Figure 7B , Fig. 8A and Figure 8B The described structure may have the capability to process two frequency bands. However, the present disclosure may be easily extended to circuits having the capability to process three or more frequency bands.

[0077] Fig. 6A 4 is a diagram showing an example configuration of a front end 420 in a wireless communication system according to various embodiments. Fig. 6A The front end 420 may include a first mixer 612a, a second mixer 612b, a first conversion circuit 614a, a second conversion circuit 614b, a first filter 616a, a second filter 616b, a first amplifier circuit 618a, and a second amplifier circuit 618b.

[0078] The first mixer 612a and the second mixer 612b can perform up / down conversion between a baseband signal and an IF signal. The first mixer 612a can process a baseband signal corresponding to a first frequency band (e.g., a low frequency band (LB)), and the second mixer 612b can process a baseband signal corresponding to a second frequency band (e.g., a high frequency band (HB)). The first mixer 612a and the second mixer 612b can receive a frequency signal of an IF band from an oscillator (not shown). The frequency signal of the IF band provided to the first mixer 612a and the second mixer 612b can have the same frequency. For example, the frequency signal of the IF band can have a frequency of 9.75GHz.

[0079] Each of the first conversion circuit 614a and the second conversion circuit 614b may include a DAC for converting a transmission signal and an ADC for converting a reception signal. The first conversion circuit 614a may process an IF band signal corresponding to a first frequency band (e.g., a low frequency band (LB)), and the second conversion circuit 614b may process an IF band signal corresponding to a second frequency band (e.g., a high frequency band (HB)).

[0080] The first filter 616a and the second filter 616b can remove unnecessary frequency components from the IF signal. The first filter 616a can process an IF band signal corresponding to a first frequency band (e.g., a low frequency band (LB)), and the second filter 616b can process an IF band signal corresponding to a second frequency band (e.g., a high frequency band (HB)).

[0081] The first amplification circuit 618a and the second amplification circuit 618b may amplify a transmission signal or a reception signal. The first amplification circuit 618a may process an IF band signal corresponding to a first frequency band (e.g., a low frequency band (LB)), and the second amplification circuit 618b may process an IF band signal corresponding to a second frequency band (e.g., a high frequency band (HB)). Each of the first amplification circuit 618a and the second amplification circuit 618b may include a power amplifier (PA) or a low noise amplifier (LNA).

[0082] As reference Fig. 6A In the embodiments provided, the front end 420 may include multiple independent paths for processing signals corresponding to multiple frequency bands. The frequencies of the IF band signals generated by the multiple paths may be substantially the same. In other words, the frequencies of the frequency signals used in the mixing operation for converting between the baseband signal and the IF band signal may be substantially the same in each path.

[0083] Figure 6B 4 is a diagram showing an example configuration of a front end 420 in a wireless communication system according to various embodiments. Figure 6B , the front end 420 may include a mixer 622 , a conversion circuit 624 , a filter 626 , an amplification circuit 628 , and a buffer 630 .

[0084] The mixer 622 may perform up / down conversion between a baseband signal and an IF signal. The mixer 622 may receive a frequency signal of an IF band from an oscillator (not shown). The conversion circuit 624 may include a DAC for converting a transmission signal and an ADC for converting a reception signal. The filter 626 may remove unnecessary frequency components from the IF signal. The amplifier circuit 628 may amplify a transmission signal or a reception signal. The amplifier circuit 628 may include a PA or an LNA.

[0085] The buffer 630 may temporarily store or may temporarily store and then output signals corresponding to at least a portion of the plurality of frequency bands. For example, in the case of transmission, the buffer 630 may sequentially store the IF band signals processed by the mixer 622, the conversion circuit 624, the filter 626, and the amplification circuit 628, and may output the signals at the same time. As another example, in the case of reception, the buffer 630 may store a plurality of IF band signals provided from the frequency converter 440, and may sequentially output the signals. For example, the buffer 630 may include a circuit for bypassing a signal and a circuit for delaying the transmission of another signal.

[0086] As reference Figure 6B In the embodiments provided, the front end 420 may include a single path for processing signals corresponding to multiple frequency bands. Accordingly, according to the time division scheme, multiple signals may share a single path. Multiple signals are repeatedly processed via a single path, so that the frequencies of the processed IF band signals may be substantially the same. Fig. 6A When compared with the embodiment of Figure 6B In the case of the embodiment, the number of paths included is reduced, so the size of the circuit can be reduced. Fig. 6A In the case of the embodiments, multiple signals can be processed simultaneously and signal processing is performed rapidly.

[0087] Fig. 7A 4 is a diagram showing an example configuration of a frequency generator 430 and a frequency converter 440 in a wireless communication system according to various embodiments. Fig. 7A , the frequency generator 430 and the frequency converter 440 may include an LO (e.g., an oscillator) 712, a first multiplier 714a, a second multiplier 714b, a separator 716, a first amplifier 718a, a second amplifier 718b, a third amplifier 718c, a fourth amplifier 718d, a first amplification circuit 722a, a second amplification circuit 722b, a first mixer 724a, a second mixer 724b, a first filter 726a, a second filter 726b, a frequency combiner / separator 728, and a broadband amplification circuit 730.

[0088] LO 712 can generate a baseband signal. The frequency signal can be amplified by the first amplifier 718a and can be converted into an m-fold frequency signal by the first multiplier 714a. The frequency signal can be provided to two paths by the separator 716. The signal provided to the first path can be amplified by the second amplifier 718b, can be converted into an n-fold frequency signal by the second multiplier 714b, and can be amplified by the third amplifier 718c. The signal provided to the second path can be amplified by the fourth amplifier 718d. Accordingly, the signal output via the first path can have a frequency corresponding to the first frequency band and is m×n times the baseband. The signal output via the second path can have a frequency corresponding to the second frequency band and is m times the baseband. For example, if m=3 and n=2, and the baseband is 4.875GHz, the frequency of the signal output via the first path can be 29.26GHz, and the frequency of the signal output via the second path can be 14.625GHz.

[0089] The first amplification circuit 722a and the second amplification circuit 722b may amplify an IF signal. The first amplification circuit 722a may process an IF band signal corresponding to a first frequency band (e.g., a low frequency band (LB)), and the second amplification circuit 722b may process an IF band signal corresponding to a second frequency band (e.g., a high frequency band (HB)). Each of the first amplification circuit 722a and the second amplification circuit 722b may include a PA and an LNA.

[0090] The first mixer 724a may perform up / down conversion between an RF signal and an IF signal in a first frequency band. The first mixer 724a may use a frequency signal corresponding to the first frequency band provided from the frequency generator 430. The second mixer 724b may perform up / down conversion between an RF signal and an IF signal in a second frequency band. The second mixer 724b may use a frequency signal corresponding to the second frequency band provided from the frequency generator 430.

[0091] The first filter 726a can remove unnecessary components except the RF signal of the first frequency band from the signal up-converted by the first mixer 724a or the LB signal separated by the frequency combiner / separator 728. The first filter 726a can be a low pass filter (LPF). The second filter 726b can remove unnecessary components except the RF signal of the second frequency band from the signal up-converted by the second mixer 724b or the HB signal separated by the frequency combiner / separator 728. The second filter 726b can be a high pass filter (HPF).

[0092] The frequency combiner / separator 728 can separate the broadband RF signal into two RF signals for the corresponding frequency bands, or can combine the two RF signals for the corresponding frequency bands into a broadband RF signal. The two RF signals can include an LB signal and an HB signal separated from the broadband RF signal based on a predetermined frequency (e.g., a center frequency).

[0093] The broadband amplification circuit 730 may amplify the RF signal. The amplification circuit 730 may include a PA or an LNA. The broadband amplification circuit 730 may have broadband characteristics capable of processing a broadband signal including RF signals of multiple frequency bands.

[0094] In reference Fig. 7A In the described embodiment, frequency signals having two different frequencies may be generated from a single oscillator (e.g., LO 712). According to another embodiment, multiple oscillators may be used to generate frequency signals having different frequencies. For example, frequency generator 430 may include a first LO for generating a frequency signal corresponding to a first frequency band and a second LO for generating a frequency signal corresponding to a second frequency band.

[0095] Figure 7B 4 is a diagram showing an example configuration of a frequency generator 430 and a frequency converter 440 in a wireless communication system according to various embodiments. Figure 7B , the frequency generator 430 and the frequency converter 440 may include an LO 762, a multiplier 764, a first separator 766a, a second separator 766b, a first amplifier 768a, a second amplifier 768b, a first amplification circuit 772a, a second amplification circuit 772b, a first mixer 774a, a second mixer 774b, a third mixer 774c, a first filter 776a, a second filter 776b, a frequency combiner / separator 778 and a broadband amplification circuit 780.

[0096] LO 762 may generate a baseband signal. The frequency signal may be amplified by the first amplifier 768a and may be converted into an m-fold frequency signal by the multiplier 764. The m-fold frequency signal may be amplified by the second amplifier 768b and may be provided to multiple paths by the first separator 766a and the second separator 766b. For example, if m=3 and the baseband may be 4.875 GHz, the frequency of the signal output to the multiple paths may be 14.625 GHz. According to various embodiments, the first separator 766a and the second separator 766b may be replaced with a single separator including three or more output terminals.

[0097] The first amplification circuit 772a and the second amplification circuit 772b may amplify the IF signal. The first amplification circuit 772a may process an IF band signal corresponding to a first frequency band (e.g., a low frequency band (LB)), and the second amplification circuit 772b may process an IF band signal corresponding to a second frequency band (e.g., a high frequency band (HB)). Each of the first amplification circuit 772a and the second amplification circuit 772b may include a PA and an LNA.

[0098] The first mixer 774a can perform up / down conversion between the RF signal and the IF signal in the first frequency band. The first mixer 774a can use the frequency signal provided by the second separator 766b of the frequency generator 430. The second mixer 774b and the third mixer 774c can perform up / down conversion between the RF signal and the IF signal in the second frequency band. The second mixer 774b can use the frequency signal provided by the first separator 766a of the frequency generator 430, and the third mixer 774c can use the frequency signal provided by the second separator 766b of the frequency generator 430. For example, the RF signal of the second frequency band can be generated by repeatedly performing the mixing operation twice using the signal of the same frequency.

[0099] The first filter 776a can remove unnecessary components except the RF signal of the first frequency band from the signal up-converted by the first mixer 774a or the LB signal separated by the frequency combiner / separator 778. The first filter 776a can be a low pass filter (LPF). The second filter 776b can remove unnecessary components except the RF signal of the second frequency band from the signal up-converted by the second mixer 774b or the HB signal separated by the frequency combiner / separator 778. The second filter 776b can be a high pass filter (HPF).

[0100] The frequency combiner / separator 778 can separate the broadband RF signal into two RF signals for the corresponding frequency bands, or can combine the two RF signals for the corresponding frequency bands into a broadband RF signal. The two RF signals can include an LB signal and an HB signal separated from the broadband RF signal based on a predetermined frequency (e.g., a center frequency).

[0101] The broadband amplification circuit 780 may amplify the RF signal. The amplification circuit 780 may include a PA or an LNA. The broadband amplification circuit 780 may have broadband characteristics capable of processing a broadband signal including RF signals of multiple frequency bands.

[0102] exist Fig. 7A or Figure 7BIn the structure shown, in the case of signal transmission, the IF signal provided from the front end 420 can be amplified by the first amplifier circuit 722a (or 772a) and the second amplifier circuit 722b (or 772b), and can be up-converted into an RF signal. The RF signal can be filtered by the first filter 726a (or 776a) and the second filter 726b (or 776b), and can be combined into a broadband RF signal by the frequency combiner / separator 728 (or 778). The broadband RF signal can be amplified by the broadband amplifier circuit 730 (or 780) and can be provided to the beamforming unit 450.

[0103] In such Fig. 7A or Figure 7B In the structure shown, in the case of signal reception, the RF signal provided from the beamforming unit 450 can be amplified by the broadband amplification circuit 730 (or 780), and can be separated into an LB signal and an HB signal by the frequency combiner / separator 728 (or 778). The LB signal and the HB signal provided to the corresponding path can be filtered by the first filter 726a (or 776a) and the second filter 726b (or 776b), and can be down-converted into an IF signal. The IF signal can be amplified by the first amplification circuit 722a (or 772a) and the second amplification circuit 722b (or 772b), and can be provided to the front end 420.

[0104] Fig. 8A is a diagram showing an example configuration of a beamforming unit 450 in a wireless communication system according to various embodiments. Fig. 8A , the beamforming unit 450 may include an amplification circuit 802, a combiner / splitter 804, and chains 806-1 to 806-N.

[0105] The amplification circuit 802 may amplify a signal provided from the frequency converter 440 or a signal provided from the combiner / divider 804. The amplification circuit 802 may include a PA or an LNA. The amplification circuit 802 may have a broadband characteristic capable of processing a broadband signal including RF signals of a plurality of frequency bands.

[0106] The combiner / splitter 804 may split the broadband RF signal into a plurality of signals and may provide the signals to the plurality of chains 806-1 to 806-N. The combiner / splitter 804 may combine the signals provided from the plurality of chains 806-1 to 806-N into a single broadband RF signal. The plurality of signals provided to the plurality of chains 806-1 to 806-N or the plurality of signals provided from the plurality of chains 806-1 to 806-N may have the same bandwidth as the broadband RF signal. For example, the signal separation performed by the combiner / splitter 804 is understood as power separation or replication, as opposed to signal separation based on a predetermined frequency.

[0107] Chains 806-1 to 806-N may be configured in a similar structure. Fig. 8A As shown, the first chain 806 - 1 may include a first phase modulator 812 a , a second phase modulator 812 b , a first frequency combiner / separator 814 a , a second frequency combiner / separator 814 b , a first filter 816 a , a second filter 816 b , and an amplification circuit 818 .

[0108] The first phase modulator 812a can adjust the phase of the RF signal of the first frequency band. The second phase modulator 812b can adjust the phase of the RF signal of the second frequency band. The phase value for adjustment can be indicated by another element (eg, the modem 410).

[0109] The first frequency combiner / separator 814a may separate the broadband RF signal into two RF signals, or may combine the two RF signals into a broadband RF signal. The second frequency combiner / separator 814b may separate the broadband RF signal into two RF signals for corresponding frequency bands, or may combine the two RF signals for corresponding frequency bands into a broadband RF signal. The two RF signals may include an LB signal and an HB signal separated from the broadband RF signal based on a predetermined frequency (e.g., a center frequency).

[0110] The first filter 816a can remove unnecessary components other than the RF signal of the first frequency band from the LB signal whose phase is adjusted by the first phase modulator 812a or the LB signal separated by the second frequency combiner / separator 814b. The first filter 816a can be an LBP. The second filter 816b can remove unnecessary components other than the RF signal of the second frequency band from the HB signal whose phase is adjusted by the second phase modulator 812b or the HB signal separated by the second frequency combiner / separator 814b. The second filter 816b can be an HBP.

[0111] The amplifier circuit 818 may amplify the RF signal. The amplifier circuit 818 may include a PA or an LNA. The amplifier circuit 818 may have a broadband characteristic capable of processing a broadband signal including RF signals of multiple frequency bands.

[0112] In such Fig. 8AIn the structure shown, in the case of signal transmission, the RF signal provided from the frequency converter 440 can be amplified by the amplifier circuit 802, can be separated into multiple signals by the combiner / separator 804, and can be provided to the chains 806-1 to 806-N. The signal provided to the first chain 806-1 can be separated into an LB signal and an HB signal by the first frequency combiner / separator 814a. The phases of the LB signal and the HB signal provided to the corresponding path can be adjusted by the first phase modulator 812a and the second phase modulator 812b, can be filtered by the first filter 816a and the second filter 816b, and can be combined into a broadband RF signal by the second frequency combiner / separator 814b. The broadband RF signal can be amplified by the amplifier circuit 818 and can be transmitted via the antenna.

[0113] In such Fig. 8A In the structure shown, in the case of signal reception, the broadband RF signal received via the antenna can be amplified by the amplifier circuit 818, and can be separated into the LB signal and the HB signal by the second frequency combiner / separator 814b. The LB signal and the HB signal provided to the corresponding path can be filtered by the first filter 816a and the second filter 816b, and the phase of the filtered signal can be adjusted by the first phase modulator 812a and the second phase modulator 812b, and can be combined into a broadband RF signal by the first frequency combiner / separator 814a. The signals provided from the chain 806-1 to 806-N can be combined by the combiner / separator 804, can be amplified by the amplifier circuit 802, and can be provided to the frequency converter 440.

[0114] Figure 8B is a diagram showing an example configuration of a beamforming unit 450 in a wireless communication system according to various embodiments. Figure 8B , the beamforming unit 450 may include an amplifier circuit 802, a combiner / splitter 804, and chains 806-1 to 806-N

[0115] The amplification circuit 802 may amplify a signal provided from the frequency converter 440 or a signal provided from the combiner / divider 804. The amplification circuit 802 may include a PA or an LNA. The amplification circuit 802 may have a broadband characteristic capable of processing a broadband signal including RF signals of a plurality of frequency bands.

[0116] The combiner / splitter 804 may split the broadband RF signal into a plurality of signals and may provide the signal to the plurality of chains 806-1 to 806-N. The combiner / splitter 804 may combine the signals provided from the plurality of chains 806-1 to 806-N into a single broadband RF signal. The plurality of signals provided to the plurality of chains 806-1 to 806-N or the plurality of signals provided from the plurality of chains 806-1 to 806-N may have the same bandwidth as the broadband RF signal. For example, the signal separation performed by the combiner / splitter 804 is understood as power separation or replication, as opposed to signal separation performed based on a predetermined frequency.

[0117] Chains 806-1 to 806-N may be configured in a similar structure. Fig. 8A As shown, the first chain 806 - 1 may include a first phase modulator 822 a , a second phase modulator 822 b , a first frequency combiner / separator 824 a , a second frequency combiner / separator 824 b , a first filter 826 a , a second filter 826 b , and an amplifier circuit 828 .

[0118] The first phase modulator 822a can adjust the phase of the RF signal of the first frequency band. The second phase modulator 822b can adjust the phase of the RF signal of the second frequency band. The phase value for adjustment can be indicated by another element (eg, the modem 410).

[0119] The first frequency combiner / separator 824a may separate the broadband RF signal into two RF signals, or may combine the two RF signals into a broadband RF signal. The second frequency combiner / separator 824b may separate the broadband RF signal into two RF signals for corresponding frequency bands, or may combine the two RF signals for corresponding frequency bands into a broadband RF signal. The two RF signals may include an LB signal and an HB signal separated from the broadband RF signal based on a predetermined frequency (e.g., a center frequency).

[0120] The first filter 826a can remove unnecessary components other than the RF signal of the first frequency band from the LB signal whose phase is adjusted by the first phase modulator 822a or the LB signal separated by the first frequency combiner / separator 824a. The first filter 826a can be an LBP. The second filter 826b can remove unnecessary components other than the RF signal of the second frequency band from the HB signal whose phase is adjusted by the second phase modulator 822b or the HB signal separated by the first frequency combiner / separator 824a. The second filter 826b can be an HBP.

[0121] The amplification circuit 828 may amplify the RF signal. The amplification circuit 828 may include a PA or an LNA. The amplification circuit 828 may have a broadband characteristic capable of processing a broadband signal including an RF signal corresponding to a plurality of frequency bands.

[0122] In such Figure 8B In the structure shown, in the case of signal transmission, the RF signal provided from the frequency converter 440 can be amplified by the amplifier circuit 802, can be separated into multiple signals by the combiner / separator 804, and can be provided to the chains 806-1 to 806-N. The signal provided to the first chain 806-1 can be separated into an LB signal and an HB signal by the first frequency combiner / separator 824a. The LB signal and the HB signal provided to the corresponding path can be filtered by the first filter 826a and the second filter 826b, the phase of the filtered signal can be adjusted by the first phase modulator 822a and the second phase modulator 822b, and can be combined into a broadband RF signal by the second combiner / separator 824b. Subsequently, the signals provided from the chains 806-1 to 806-N can be combined by the combiner / separator 804, can be amplified by the amplifier circuit 802, and can be provided to the frequency converter 440.

[0123] In such Figure 8B In the structure shown, in the case of signal reception, the broadband RF signal received via the antenna can be amplified by the amplifier circuit 828, and can be separated into the LB signal and the HB signal by the second frequency combiner / separator 824b. The phases of the LB signal and the HB signal provided to the corresponding path can be adjusted by the first phase modulator 822a and the second phase modulator 822b, can be filtered by the first filter 826a and the second filter 826b, and can be combined into a broadband RF signal by the first combiner / separator 824a. The broadband RF signal can be amplified by the amplifier circuit 802 and can be provided to the frequency converter 440.

[0124] In the circuit structure as described above, the frequency converter 440 and the beamforming unit 450 may be implemented as a single IC, or may be separated into two ICs. If the frequency converter 440 and the beamforming unit 450 are implemented as a single IC, the cost of mass production and the overall size of the circuit may be reduced, which is advantageous. If the frequency converter 440 and the beamforming unit 450 are implemented as two ICs, the unnecessary components generated by the frequency converter 440 may be removed by an external filter, which is advantageous. When a small number of antenna arrays are used, the case where the frequency converter 440 and the beamforming unit 450 are implemented as a single IC may be advantageous. When a large number of antenna arrays are used, the case where the frequency converter 440 and the beamforming unit 450 are implemented as multiple ICs may be advantageous. For example, the terminal may include approximately 4 to 16 beamforming ICs. The base station may include approximately 16 to 256 beamforming ICs. If the frequency converter 440 and the beamforming unit 450 are implemented as a single IC, as many frequency converters as the number of beamforming units may be required. If too many frequency converters are reused, power may be consumed unnecessarily.

[0125] Fig. 9A is a diagram showing an example connection structure between a frequency converter 440 and a beamforming unit 450 in a wireless communication system according to various embodiments. Fig. 9A The case where the frequency converter 440 and the beamforming unit 450 are implemented as separate ICs is shown. Fig. 9A , the frequency converter 440 and the beamforming unit 450 may be packaged as separate ICs, and the filter 910 may be provided between the second amplification circuit 730 or 780 of the frequency converter 440 and the amplification circuit 902 of the beamforming unit 450. The filter 910 may remove unnecessary signals from signals transferred between the frequency converter 440 and the beamforming unit 450. The filter 910 may be a band stop filter (BSF).

[0126] Fig. 9B is a diagram showing an example connection structure between a frequency converter 440 and a beamforming unit 450 in a wireless communication system according to various embodiments. Fig. 9B The case where the frequency converter 440 and the beamforming unit 450 are implemented as a single IC is shown. If the frequency converter 440 and the beamforming unit 450 are packaged as a single IC, a single amplification circuit 922 may be used instead of the second amplification circuit 812 b of the frequency converter 440 and the amplification circuit 902 of the beamforming unit 450. Accordingly, the overall size of the circuit and the amount of power consumed may be relatively reduced.

[0127] If the frequency converter 440 and the beamforming unit 450 are implemented as Fig. 9B The single IC shown consists of Fig. 7A or Figure 7B Components and Fig. 8A Some elements of the frequency converter 440 among the elements of the beamforming unit 450 or 8B are removed, and the broadband amplification circuit 730 (or 780) and the amplification circuit 802 can be replaced with the amplification circuit 922. The frequency combiner / separator 728 (or 778) and the frequency combiner / separator 824a (or 824b) can be arranged before and after the amplification circuit 922. Accordingly, the separation and combination of the broadband RF signal are performed before and after the amplification circuit 922. In order to remove the separation and combination of the RF signal, if according to another embodiment, the frequency converter 440 and the beamforming unit 450 are implemented as a single IC, the frequency combiner / separator 728 (or 778) and the frequency combiner / separator 824a (or 824b) can be excluded, and the amplification circuit 922 and the combiner / separator 804 can be replaced with the amplification circuit and the combiner / separator for the corresponding frequency band.

[0128] Fig.10 is a flow chart 1000 illustrating example operations for transmitting signals via multiple frequency bands in a wireless communication system in accordance with various embodiments. Fig.10 An exemplary operation method of the base station 110 or the terminal 120 is shown. For ease of description, the subject of operation is referred to as a "transceiver".

[0129] refer to Fig.10 In operation 1001, the transceiver may convert a first digital signal corresponding to a first frequency band and a second digital signal corresponding to a second frequency band into a first analog signal and a second analog signal having the same IF frequency. According to various embodiments, the transceiver may perform the generation of the first analog signal and the generation of the second analog signal in parallel or sequentially.

[0130] In operation 1003, the transceiver may up-convert the first analog signal and the second analog signal to generate a first RF signal of the first frequency band and a second RF signal of the second frequency band. In addition, after up-conversion, the transceiver may filter the first RF signal and the second RF signal, respectively. The transceiver may combine the first RF signal and the second RF signal to generate an RF signal having a third bandwidth.

[0131] In operation 1005, the transceiver may separate the RF signal having the third bandwidth including the first RF signal and the second RF signal into the first RF signal and the second RF signal. For example, for phase adjustment to perform beamforming, the transceiver may separate the RF signal having the third bandwidth into the first RF signal having the first bandwidth and the second RF signal having the second bandwidth.

[0132] In operation 1007, the transceiver may adjust the phase of the first RF signal to perform beamforming in the first frequency band, and may adjust the phase of the second RF signal to perform beamforming in the second frequency band. Phase adjustment may be performed for each chain. That is, the transceiver may divide the RF signal having the third bandwidth into as many signals as the number of chains. Each chain may divide the RF signal into the first RF signal and the second RF signal, and may adjust the phase of the signal.

[0133] According to various embodiments as described above, signals of multiple frequency bands can be transmitted or received. By using the above structure to transmit or receive signals of multiple frequency bands, the following reference can be performed. Fig.11A or Fig. 11B Describes resource management in more detail.

[0134] Fig.11A is a diagram showing an example of simultaneously using multiple frequency bands in a wireless communication system according to various embodiments. Fig.11A , the base station 110 can perform communication with the terminal 120 by using two frequency bands (e.g., 24 GHz band and 39 GHz band) at the same time. Contrary to the orthogonal time intervals, the two frequency bands can be used during the same time interval. For example, the base station 110 can form a single beam 1110 in two frequency bands (e.g., 24 GHz band and 39 GHz band).

[0135] Fig. 11B 2 is a diagram showing another example of simultaneously using multiple frequency bands in a wireless communication system according to various embodiments. Fig. 11B , the base station 110 may use a first frequency band (e.g., a 24 GHz band) to perform communication with the terminal 120, and may use a second frequency band (e.g., a 39 GHz band) to perform communication with the terminal 130. Contrary to the orthogonal time intervals, two frequency bands may be used during the same time interval. For example, the base station 110 may form a first beam 1120a in a first frequency band (e.g., a 24 GHz band), and may form a second beam 1120b in a second frequency band (e.g., a 39 GHz band).

[0136] As described above, despite managing different frequency bands with a frequency gap of about several gigahertz to several tens of gigahertz therebetween, the base station 110 can provide services for a single terminal or a plurality of different terminals by simultaneously using a plurality of frequency bands.

[0137] The methods disclosed in the claims and / or the methods according to the various embodiments described in the present disclosure may be implemented by hardware, software, or a combination of hardware and software.

[0138] When these methods are implemented by software, a computer-readable storage medium for storing one or more programs (software modules) may be provided. One or more programs stored in the computer-readable storage medium may be configured to be executed by one or more processors in an electronic device. At least one program may include instructions that cause an electronic device to perform methods according to various embodiments of the present disclosure as defined by the appended claims and / or disclosed herein.

[0139] Programs (software modules or software) can be stored in non-volatile memory, including random access memory and flash memory, read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), magnetic disk storage devices, compact disk-ROM (CD-ROM), digital versatile disk (DVD), or other types of optical storage devices, or cassette tapes. Any combination of some or all of them can form a memory for storing programs. In addition, multiple such memories can be included in an electronic device.

[0140] In addition, the program can be stored in an attachable storage device that can access the electronic device through a communication network such as the Internet, an intranet, a local area network (LAN), a wide area network (WLAN), and a storage area network (SAN) or a combination thereof. Such a storage device can access the electronic device via an external port. In addition, a separate storage device on a communication network can access a portable electronic device.

[0141] In the above-mentioned exemplary embodiments of the present disclosure, the elements included in the present disclosure are expressed in singular form or plural form, depending on the embodiment presented. However, for ease of description, the singular form or plural form is appropriately selected for the presented situation, and the present disclosure is not limited to the elements expressed in singular form or plural form. Therefore, the elements expressed in plural form may also include a single element, or the elements expressed in singular form may also include multiple elements.

[0142] Although the present disclosure has been described and illustrated with reference to various exemplary embodiments, it should be understood that the various exemplary embodiments are intended to illustrate rather than limit. Those skilled in the art will further appreciate that various modifications and variations, including the appended claims and their equivalents, may be made without departing from the true spirit and full scope of the present disclosure.

Claims

1. A transceiver for a wireless communication system, the transceiver comprising: a first circuit configured to up-convert a first digital signal corresponding to a first frequency band and to up-convert a second digital signal corresponding to a second frequency band using a same intermediate frequency (IF) frequency, and analog-convert the up-converted signals into a first analog signal and a second analog signal; a second circuit configured to up-convert the first analog signal and up-convert the second analog signal to generate a first radio frequency (RF) signal of the first frequency band and a second RF signal of the second frequency band, and output an RF signal of a third bandwidth including the first RF signal and the second RF signal; as well as a third circuit configured to separate the RF signal of the third bandwidth into the first RF signal and the second RF signal, adjust the phase of the first RF signal to perform beamforming in the first frequency band, and adjust the phase of the second RF signal to perform beamforming in the second frequency band, The first frequency band is different from the second frequency band.

2. The transceiver according to claim 1, wherein: The first circuit is configured to generate the first analog signal and the second analog signal using different signal processing paths.

3. The transceiver according to claim 1, wherein: The first circuit is configured to generate the first analog signal and the second analog signal using a single signal processing path.

4. The transceiver according to claim 1, wherein: The first circuit is configured to filter the first analog signal and the second analog signal, amplify the filtered first analog signal and the second analog signal, and output the amplified first analog signal and the second analog signal.

5. The transceiver according to claim 1, further comprising: A fourth circuit is configured to provide a frequency signal for up-conversion by the second circuit.

6. The transceiver according to claim 1, wherein: The second circuit is configured to filter the first RF signal and the second RF signal, and combine the filtered first RF signal and the filtered second RF signal to generate the RF signal of the third bandwidth.

7. The transceiver according to claim 1, wherein: The third circuit is configured to separate power of the RF signal of the third bandwidth to generate RF signals to be provided to a plurality of chains.

8. The transceiver according to claim 1, wherein: The third circuit is configured to filter the first RF signal and the second RF signal whose phases are adjusted, combine the filtered first RF signal and the second RF signal, and transmit the combined first RF signal and the second RF signal via an antenna.

9. The transceiver according to claim 1, wherein: The first circuit comprises: a first mixer and a first digital-to-analog converter (DAC) configured to generate the first analog signal; and The second mixer and the second DAC are configured to generate the second analog signal.

10. The transceiver according to claim 1, wherein: The first circuit includes a mixer and a DAC commonly used to generate the first analog signal and the second analog signal.

11. A signal processing device for a transceiver of a wireless communication system, the signal processing device comprising: at least one mixer configured to up-convert a first analog signal and a second analog signal of a same intermediate frequency (IF) frequency to generate a first radio frequency (RF) signal of a first frequency band and a second RF signal of a second frequency band; as well as a combiner configured to generate an RF signal of a third bandwidth including the first RF signal and the second RF signal, Wherein, the at least one mixer comprises: a first mixer configured to up-convert the first analog signal, a second mixer configured to up-convert the second analog signal, and a third mixer configured to up-convert the second analog signal up-converted by the second mixer, The first frequency band is different from the second frequency band.

12. The signal processing device according to claim 11, further comprising: At least one filter is configured to filter the first RF signal and the second RF signal.

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