KR20200102897A - A mehthod for transceiving user equpment management information in a wireless communication system and electronic device thereof - Google Patents

Abstract

An electronic device is disclosed. The electronic device according to the present disclosure includes a communication unit including a plurality of phased array antennas, and a storage storing terminal operation information including information on at least one frequency band covered by each of the plurality of phased array antennas. It may be characterized in that it comprises a control unit for controlling to transmit the terminal operation information to the unit and the base station.

Description

A method of transmitting and receiving terminal operation information in a wireless communication system, and an electronic device that performs the same {A MEHTHOD FOR TRANSCEIVING USER EQUPMENT MANAGEMENT INFORMATION IN A WIRELESS COMMUNICATION SYSTEM AND ELECTRONIC DEVICE THEREOF}

The technical idea of the present disclosure relates to a wireless communication system, and more particularly, to a method of transmitting and receiving user equipment (UE) management information in a wireless communication system, and an electronic device performing the same.

4G (4 ^th generation) to meet the traffic demand in the radio data communication system increases since the commercialization trend, efforts to develop improved 5G (5 ^th generation) communication system, or pre-5G communication system have been made. For this reason, a 5G communication system or a pre-5G communication system is called a New Radio (NR) system in 3GPP standards.

In order to achieve a high data rate, 5G communication systems are being considered for implementation in the ultra-high frequency (mmWave) band (e.g., the 28 giga (28 GHz) band, the 39 giga (39 GHz) band). In order to mitigate the path loss of radio waves in the ultra-high frequency band and increase the transmission distance of radio waves, in 5G communication systems, beamforming, massive MIMO, and Full Dimensional MIMO (FD-MIMO) ), array antenna, analog beam-forming, hybrid beam-forming, and large scale antenna technologies are being discussed.

A problem to be solved by the technical idea of the present disclosure is to provide efficient resource allocation by providing information on a frequency band covered by each of a plurality of phased array antennas to a base station.

The electronic device according to the present disclosure includes a communication unit including a plurality of phased array antennas, and a storage storing terminal operation information including information on at least one frequency band covered by each of the plurality of phased array antennas. It may be characterized in that it comprises a control unit and a control unit for controlling to transmit the terminal operation information to the base station.

According to the present disclosure, a method of operating an electronic device including a plurality of phased array antennas stores terminal operation information including information on at least one frequency band covered by each of the plurality of phased array antennas. It may be characterized in that it comprises the step of, and transmitting the terminal operation information to the base station.

The base station apparatus according to the present disclosure may include a communication unit for receiving terminal operation information from an electronic device, and a control unit for performing resource allocation based on the received terminal operation information.

The wireless communication system according to the present disclosure includes an electronic device that includes a plurality of phased array antennas, transmits terminal operation information to a base station, and a base station that performs resource allocation to the electronic device based on the terminal operation information, The terminal operation information may be characterized in that it includes information on at least one frequency band covered by each of the plurality of phased array antennas.

An electronic device according to the inventive concept may perform efficient resource allocation for each frequency band or component carrier by transmitting terminal operation information indicating a frequency band that a plurality of phased array antennas can process to a base station.

The effects obtainable in the present disclosure are not limited to the above-mentioned effects, and other effects not mentioned may be clearly understood by those of ordinary skill in the technical field to which the present disclosure belongs from the following description. will be.

1 illustrates a wireless communication system in accordance with exemplary embodiments of the present disclosure.
2 is a block diagram of a base station according to exemplary embodiments of the present disclosure.
3 is a block diagram of an electronic device according to example embodiments of the present disclosure.
4A is a block diagram of a communication unit when transmitting a radio signal according to exemplary embodiments of the present disclosure, and FIG. 4B is a block diagram of a communication unit when receiving a radio signal according to exemplary embodiments of the present disclosure.
5A is a circuit diagram of phased array antennas that are independent from each other according to exemplary embodiments of the present disclosure, and FIG. 5B is a circuit diagram for operating independent phased array antennas in adjacent frequency bands according to exemplary embodiments of the present disclosure. An example is shown, and FIG. 5C shows an example of operating independent phased array antennas in spaced frequency bands according to exemplary embodiments of the present disclosure.
6A is a circuit diagram of dependent phased array antennas according to exemplary embodiments of the present disclosure, and FIG. 6B is an example of operating dependent phased array antennas in adjacent frequency bands according to exemplary embodiments of the present disclosure. And FIG. 6C illustrates an example of operating dependent phased array antennas in spaced frequency bands according to exemplary embodiments of the present disclosure.
7 is a diagram illustrating a signal exchange diagram between an electronic device and a base station according to example embodiments of the present disclosure.
8A illustrates an example of operating a dependent phased array antenna in the case of a single subcarrier spacing according to exemplary embodiments of the present disclosure, and FIG. 8B is a case of a single subcarrier spacing according to exemplary embodiments of the present disclosure. , Another example of operating a dependent phased array antenna is shown.
9A is a diagram illustrating an example of operating a dependent phased array antenna in the case of a multi-subcarrier spacing according to exemplary embodiments of the present disclosure, and FIG. 9B is a case of a multi-subcarrier spacing according to exemplary embodiments of the present disclosure. , Another example of operating a dependent phased array antenna is shown.
10 is a flowchart illustrating a scheduling performed by a base station according to exemplary embodiments of the present disclosure.

1 illustrates a wireless communication system in accordance with exemplary embodiments of the present disclosure.

Referring to FIG. 1, a base station 110 and an electronic device 120 are disclosed. The base station 110 and the electronic device 120 may be exemplified as nodes using a wireless channel in a wireless communication system.

The base station 110 is a network infrastructure that provides wireless access to the electronic device 120. The base station 110 may have coverage defined as a certain geographic area based on a distance at which a signal can be transmitted. In addition to a base station, the base station 110 includes'access point (AP)','eNodeB (eNodeB, eNB)', '5G node (5th generation node)', and'wireless point'. Or, it may be replaced with other terms having an equivalent technical meaning.

According to various embodiments, the base station 110 may be connected to one or more'transmission/reception points (TRP)'. The base station 110 may transmit a downlink signal or receive an uplink signal to the electronic device 120 through one or more TRPs.

The electronic device 120 is a device used by a user, and may communicate with the base station 110 through a wireless channel. The electronic device 120 includes a terminal other than'user equipment (UE)','mobile station','subscriber station', and'customer premises equipment' (CPE). ),'remote terminal','wireless terminal', or'user device', or other terms having an equivalent technical meaning.

The base station 110 and the electronic device 120 may transmit and receive radio signals in a millimeter wave (mmWave) band (eg, 28 GHz, 30 GHz, 38 GHz, 60 GHz). In order to overcome the high attenuation characteristic of the millipiter wave, the base station 110 and the electronic device 120 may perform beamforming. Here, beamforming may include transmission beamforming and reception beamforming. That is, the base station 110 and the electronic device 120 may impart directivity to a transmission signal or a reception signal. To this end, the base station 110 and the electronic device 120 may select an optimal beam for wireless communication through a beam search, beam training, or beam management procedure.

According to the above-described embodiment, the base station 110 is described as transmitting and receiving a radio signal with the electronic device 120, but is not limited thereto. According to various embodiments, the base station 110 may transmit and receive wireless signals independently from the electronic device 120 as well as other electronic devices 130 and 140. For example, the base station 110 performs beam search with a plurality of electronic devices 120, 130, and 140, respectively, and selects an optimal beam for each of the plurality of electronic devices 120, 130, and 140, Wireless communication can be performed independently.

2 is a block diagram of a base station according to exemplary embodiments of the present disclosure.

Referring to FIG. 2, the base station 110 may include a wireless communication unit 210, a backhaul communication unit 220, a storage unit 230, and a control unit 240.

The wireless communication unit 210 may perform functions for transmitting and receiving signals through a wireless channel. According to an embodiment, the wireless communication unit 210 may perform a function of converting between a baseband signal and a bit stream according to a physical layer standard of a system. For example, when transmitting data, the wireless communication unit 210 may generate complex symbols by encoding and modulating a transmission bit stream, and when receiving data, demodulate and decode a baseband signal to restore a received bit stream. have. In addition, the wireless communication unit 210 may up-convert the baseband signal into a radio frequency (RF) band signal and then transmit through an antenna or down-convert an RF band signal received through the antenna into a baseband signal. To this end, the wireless communication unit 210 may include a transmission filter, a reception filter, an amplifier, a mixer, an oscillator, a digital to analog convertor (DAC), an analog to digital convertor (ADC), and the like.

The wireless communication unit 210 may transmit and receive signals. For example, the wireless communication unit 210 may transmit a synchronization signal, a reference signal, system information, a message, control information, or data. In addition, the wireless communication unit 210 may perform beamforming. The wireless communication unit 210 may apply a beamforming weight to a signal in order to give a directionality to a signal to be transmitted/received. The wireless communication unit 210 may repeatedly transmit a signal by changing the formed beam.

The backhaul communication unit 220 provides an interface for performing communication with other nodes in the network. That is, the backhaul communication unit 220 converts a bit stream transmitted from the base station 110 to another node, for example, another access node, another base station, an upper node, a core network, etc., into a physical signal, and is received from another node. Physical signals can be converted into bit strings.

The storage unit 230 stores data such as a basic program, an application program, and setting information for the operation of the base station 110. The storage unit 230 may be formed of a volatile memory, a nonvolatile memory, or a combination of a volatile memory and a nonvolatile memory. The control unit 240 controls the operations of the base station 110. For example, the control unit 240 transmits and receives signals through the wireless communication unit 210 or the backhaul communication unit 220. In addition, the control unit 240 writes and reads data in the storage unit 230. To this end, the controller 240 may include at least one processor.

3 is a block diagram of an electronic device according to example embodiments of the present disclosure. Descriptions overlapping with FIG. 2 will be omitted.

Referring to FIG. 3, the electronic device 120 may include a communication unit 310, a storage unit 320, and a control unit 330.

The communication unit 310 performs functions for transmitting and receiving signals through a wireless channel. For example, the communication unit 310 performs a function of converting between a baseband signal and a bit stream according to the physical layer standard of the system. For example, when transmitting data, the communication unit 310 may generate complex symbols by encoding and modulating a transmission bit stream, and when receiving data, demodulate and decode a baseband signal to restore a received bit stream. In addition, the communication unit 310 may up-convert the baseband signal into an RF band signal and then transmit it through an antenna or down-convert an RF band signal received through 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, and the like. The communication unit 310 may perform beamforming. The communication unit 310 may apply a beamforming weight to the signal in order to give direction to a signal to be transmitted/received.

The communication unit 310 may transmit and receive signals. The communication unit 310 may receive a downlink signal. The downlink signal may include a synchronization signal (SS), a reference signal (RS), system information, a configuration message, control information, or downlink data. Also, the communication unit 310 may transmit an uplink signal. The uplink signal may include a random access related signal or a reference signal (eg, sounding reference signal (SRS), DM-RS), or uplink data.

The storage unit 320 may store data such as a basic program, an application program, and setting information for the operation of the electronic device 120. The storage unit 320 may be formed of a volatile memory, a nonvolatile memory, or a combination of a volatile memory and a nonvolatile memory. Further, the storage unit 320 may provide stored data according to the request of the control unit 330.

According to various embodiments, the storage unit 320 may include terminal operation information. The terminal operation information may include information on a plurality of phased array antennas of the electronic device 120. For example, the terminal operation information may include information on frequency bands that can be received by each of the plurality of phased array antennas. For another example, the terminal operation information may include information on phased antenna arrays corresponding to each frequency band.

The controller 330 controls overall operations of the electronic device 120. For example, the control unit 330 may transmit and receive signals through the communication unit 310. In addition, the control unit 330 may record and read data in the storage unit 320. To this end, the controller 330 may include at least one processor or a micro processor, or may be a part of a processor. In the case of a part of the processor, a part of the communication unit 310 and the control unit 330 may be referred to as a communication processor (CP).

4A is a block diagram of a communication unit when transmitting a radio signal according to exemplary embodiments of the present disclosure, and FIG. 4B is a block diagram of a communication unit when receiving a radio signal according to exemplary embodiments of the present disclosure.

4A shows an example of a detailed configuration of the communication unit 310 of FIG. 3. Specifically, FIG. 4A illustrates components for performing hybrid beamforming when transmitting a radio signal.

Referring to FIG. 4A, the communication unit 310 includes an encoding and modulating unit 410, a digital beamforming unit 420, a first transmission path 430-1 to an Nth transmission path 430-N, and an analog beamforming unit. Includes part 440.

The encoding and modulating unit 410 performs channel encoding. For channel encoding, at least one of a low density parity check (LDPC) code, a convolution code, and a polar code may be used. The encoding and modulating unit 410 generates modulation symbols by performing constellation mapping.

The digital beamforming unit 420 performs beamforming on a digital signal (eg, modulation symbols). To this end, the digital beamforming unit 420 multiplies the modulation symbols by beamforming weights. Here, the beamforming weights are used to change the size and phase of a signal, and may be referred to as a'precoding matrix', a'precoder', and the like. The digital beamforming unit 420 outputs digitally beamformed modulation symbols through the first transmission path 430-1 to the Nth transmission path 430 -N. In this case, according to a multiple input multiple output (MIMO) transmission scheme, modulation symbols may be multiplexed or the same modulation symbols may be provided through the first transmission path 430-1 to the Nth transmission path 430 -N.

The first to N-th transmission paths 430-1 to 430-N convert digital beamformed digital signals into analog signals. To this end, each of the first transmission paths 430-1 to the Nth transmission paths 430 -N may include an inverse fast fourier transform (IFFT) operation unit, a cyclic prefix (CP) insertion unit, a DAC, and an up-conversion unit. . The CP insertion unit is for an orthogonal frequency division multiplexing (OFDM) scheme, and may be excluded when another physical layer scheme (eg, filter bank multi-carrier (FBMC)) is applied. That is, the first transmission paths 430-1 to Nth transmission paths 430 -N provide an independent signal processing process for a plurality of streams generated through digital beamforming. However, depending on the implementation method, some of the components of the first transmission path 430-1 to the Nth transmission path 430 -N may be used in common.

The analog beamforming unit 440 performs beamforming on an analog signal. To this end, the digital beamforming unit 440 multiplies the analog signals by beamforming weights. Here, the beamforming weights are used to change the magnitude and phase of the signal.

4B shows an example of a detailed configuration of the communication unit 310 of FIG. 3. Specifically, FIG. 4B exemplifies components for performing hybrid beamforming when receiving a radio signal.

According to various embodiments, the communication unit 310 includes a decoding and demodulation unit 450, a digital beamforming unit 460, a first receiving path 470-1 to an Nth receiving path 470-N, and an analog beam. It may include a forming unit 480.

The decoding and demodulation unit 450 may perform channel decoding. For channel decoding, at least one of a low density parity check (LDPC) code, a convolution code, a polar code, and a turbo code may be used.

According to various embodiments, the digital beamforming unit 460 and the analog beamforming unit 480 may correspond to the digital beamforming unit 420 and the analog beamforming unit 440 of FIG. 5A.

The first to N-th receiving paths 470-1 to 470 -N convert digital beamformed digital signals into analog signals. To this end, each of the first receiving path 470-1 to the N-th receiving path 470-N is a fast fourier transform (FFT) operation unit, an analog-to-digital converter, a CP removal unit, and a serial -May include a parallel conversion unit and a down conversion unit (down connerter). Specifically, each of the first receiving paths 470-1 to N-th receiving paths 470-N down-converts the received signal to a baseband frequency, and removes the CP to generate a serial time domain baseband signal, The serial time domain baseband signal may be converted into parallel time domain signals, N parallel frequency domain signals may be generated by performing an FFT algorithm, and the parallel frequency domain signals may be converted into a sequence of modulated data symbols. That is, the first to N-th reception paths 470-1 to 470-N may provide an independent signal processing process for a plurality of streams generated through digital beamforming. However, depending on the implementation method, some of the components of the first to Nth reception paths 470-1 to 470 -N may be used in common.

5A is a circuit diagram of phased array antennas that are independent from each other according to exemplary embodiments of the present disclosure, and FIG. 5B is a circuit diagram for operating independent phased array antennas in adjacent frequency bands according to exemplary embodiments of the present disclosure. An example is shown, and FIG. 5C shows an example of operating independent phased array antennas in spaced frequency bands according to exemplary embodiments of the present disclosure.

Referring to FIG. 5A, a first local oscillator 510-1 to an Nth local oscillator 510 -N are disclosed. The first local oscillator 510-1 to the N-th local oscillator 510-N respectively correspond to the first transmission path 430-1 to the N-th transmission path 430-N of FIG. 4A, and analog beamforming It may be included in the unit 440.

That is, the first local oscillator 510-1 may frequency multiply a signal received from the first transmission path 430-1 and transmit it to the first phased array antenna 540, and the N-th local oscillator 550 The signal received from the Nth transmission path 430 -N may be multiplied by frequency and transmitted to the Nth phased array antenna 550.

Each of the first phased array antenna 540 to the Nth phased array antenna 550 may convert and amplify the phases and magnitudes of input signals and transmit them to an external device through antennas. For example, in the case of the first phased array antenna 540, a signal received through the first transmission path 430-1 is performed by the phase/magnitude converters 520-1-1 to 520-1-M. After being converted into signal sequences having different or the same phase/magnitude, amplified by the amplifiers 530-1- to 530-1-M, it may be transmitted through antennas.

In the above-described embodiment, FIG. 5A illustrates phased array antennas independent from each other when transmitting a radio signal, but is not limited thereto. According to various embodiments, in the case of receiving a radio signal, descriptions of phased array antennas independent from each other may be inferred. For example, the signals received through the first phased array antenna 540 to the Nth phased array antenna 550 are amplifiers (for example, amplifiers 530-1-1 to 530-1- of FIG. 5A). M)). The phase and magnitude of the amplified radio signal may be changed by phase/magnitude converters (eg, phase/magnitude converters 520-1-1 to 520-1-M of FIG. 5A). The changed phase and size may be based on a value set according to reception beamforming. For example, a signal received through the first phased array antenna 540 and a signal received through the Nth phased array antenna 550 may be changed to different phases and sizes, respectively.

Referring to FIG. 5B, the electronic device 120 may operate independent phased array antennas in adjacent frequency bands. For example, the first phased array antenna may receive a radio signal transmitted through the N258 band (eg, 24250Hz to 27500Hz) or transmit a radio signal through the N258 band. The second phased array antenna may receive a radio signal transmitted through the N257 band (eg, 26500Hz to 29500Hz) or transmit a radio signal through the N257 band.

The first phased array antenna and the second phased array antenna may be phased array antennas independent from each other. For example, the first phased array antenna and the second phased array antenna may be connected to different local oscillators, respectively. Accordingly, while the first phased array antenna performs analog beamforming according to the first set, the second phased array antenna may perform analog beamforming according to a second set different from the first set. The first set and the second set may include phase/magnitude conversion values of different values.

According to various embodiments, a common frequency region (eg, 26500Hz to 27500Hz) may exist between the N258 band and the N257 band. When the first phased array antenna and the second phased array antenna respectively transmit and receive wireless signals through the common frequency domain, quality deterioration may occur due to interference between adjacent phased array antennas.

5C, the electronic device 120 may operate independent phased array antennas in separated frequency bands. For example, the first phased array antenna may receive a radio signal transmitted through the N258 band (eg, 24250Hz to 27500Hz) or transmit a radio signal through the N258 band. The second phased array antenna may receive a radio signal transmitted through the N260 band (eg, 37000 Hz to 40000 Hz) or transmit a radio signal through the N257 band. According to various embodiments, when signals are transmitted and received between spaced frequency bands, the influence of interference between adjacent phased array antennas illustrated in FIG. 5B may be reduced.

6A is a circuit diagram of dependent phased array antennas according to exemplary embodiments of the present disclosure, and FIG. 6B is an example of operating dependent phased array antennas in adjacent frequency bands according to exemplary embodiments of the present disclosure. And FIG. 6C illustrates an example of operating dependent phased array antennas in spaced frequency bands according to exemplary embodiments of the present disclosure.

6A, dependent phased array antennas are shown. For example, the first phased array antenna and the Nth phased array antenna may be connected to the same Nth local oscillator 510. Phased array antennas connected to the common local oscillator 510 (for example, the first phased array antenna 540 of FIG. 5A and the Nth phased array antenna 550) correspond to the single phased array antenna 610 Can be.

5A and 6A, in the case of FIG. 5A, the first phased array antenna is connected to the first local oscillator, and the first phased array antenna is connected to the second local oscillator, respectively, so that the first and second local oscillators are connected. Analog beamforming can be performed independently of each other by varying the magnitude of the frequency multiplication in the oscillator. On the other hand, in the case of FIG. 6A, the first phased array antenna and the second phased array antenna may be dependent on each other by being connected to a common local oscillator. For example, when the first phased array antenna performs analog beamforming according to the first set, the phase and magnitude of a signal received by the second phased array antenna may also be modulated and amplified according to the first set. As another example, when the second phased array antenna performs analog beamforming according to the second set, the phase and magnitude of a signal received by the first phased array antenna may be modulated and amplified according to the second set.

In the above-described embodiment, FIG. 6A illustrates phased array antennas independent from each other when transmitting a radio signal, but is not limited thereto. According to various embodiments, in the case of receiving a radio signal, descriptions of phased array antennas independent from each other may be inferred. For example, a signal received through the single phased array antenna 610 may be amplified by amplifiers (eg, amplifiers 530-1-1 to 530-1-M of FIG. 6A). The phase and magnitude of the amplified radio signal may be changed by phase/magnitude converters (eg, phase/magnitude converters 520-1-1 to 520-1-M of FIG. 6A). The changed phase and size may be based on a value set according to reception beamforming. For example, since the signal received through the single phased array antenna 610 is dependent on the common local oscillator 510, it may be changed to the same phase and magnitude.

Referring to FIG. 6B, the first phased array antenna and the second phased array antenna of FIG. 5B are dependent on each other, and may be understood to be the same as the third phased array antenna. In the case of FIG. 5B, in order to receive a signal of the N258 band, a first phased array antenna is received as an optimal reception beam by analog beamforming as many as a first set, and a second phased array antenna is used to receive a signal of the N257 band. By analog beamforming as much as the second set of 2, it is possible to receive as an optimal reception beam. On the other hand, the third phased array antenna of FIG. 6B may not perform analog beamforming for the N257 band and the N258 band, respectively. Therefore, according to an embodiment, when analog beamforming is performed based on the first set of the third phased array antenna in order to receive the N258 band as an optimal beam, the optimal beam for the N257 band is analog based on the second set. Because beamforming is required, the reception quality of the N257 band may be deteriorated. According to another embodiment, when analog beamforming of a third phased array antenna based on a second set in order to receive the N257 band as an optimal beam, the optimal beam for the N258 band is analog beamforming based on the first set. Is required, the reception quality of the N258 band may be deteriorated.

Referring to FIG. 6C, the first phased array antenna and the second phased array antenna of FIG. 5C are dependent on each other, and may be understood to correspond to the third phased array antenna. In the case of FIG. 5C, when analog beamforming of the first phased array antenna based on the first set in order to receive a signal of the N258 band, the optimal reception beam may be received. In order to receive a signal of the N260 band, when analog beamforming is performed based on the second set of second phased array antennas, the optimal reception beam may be received. On the other hand, the third phased array antenna of FIG. 6C may not perform analog beamforming based on the first set and the second set for the N258 band and the N260 band, respectively. Therefore, according to an embodiment, in case of analog beamforming based on the first set of the third phased array antenna in order to receive the N258 band as an optimal beam, the optimal beam for the N260 band is analog based on the second set. Because beamforming is required, the reception quality of the N260 band may be deteriorated. According to another embodiment, when analog beamforming is performed based on the second set of the third phased array antenna in order to receive the N260 band as an optimal beam, the optimal beam for the N258 band is analog beamforming based on the first set. Is required, the reception quality of the N258 band may be deteriorated.

7 is a diagram illustrating a signal exchange diagram between an electronic device and a base station according to example embodiments of the present disclosure.

Referring to FIG. 7, in step 710, the electronic device 120 may be connected to the base station 110. That is, the electronic device 120 may correspond to an RRC connected mode.

In step 720, the electronic device 120 may transmit terminal capability information, that is, UE capability information, to the base station 110. The terminal capability information includes information such as a frequency band that the electronic device 120 can receive, a component carrier (CC) within a frequency band, and a maximum frequency range that can be processed by discontinuous CC allocation within the frequency band. can do. For example, referring to TS 38.331 v15.2.0, terminal capability information is as follows.

According to various embodiments, the electronic device 120 may include terminal operation information in the terminal capability information and transmit it to the base station 110. For example, the terminal operation information includes index information on frequency bands that can be received from each of a plurality of phased array antennas and a combination thereof, a plurality of phased array antennas that can be received from each of the frequency bands, and a combination thereof. It may include index information, etc.

According to various embodiments, the terminal operation information may include information indicating indexes of phased array antennas capable of receiving radio signals of the frequency band for each frequency band. The information may be referred to as "NeedForBeamInterruption". The "NeedForBeamInterruption" value may be [0~Maximum number of Phase Arrays]. That is, "NeedForBeamInterruption" may include phased array antenna indexes capable of supporting a corresponding band within a range of the maximum number of phased array antennas capable of receiving a radio signal from 0. For example, referring to FIG. 5B, "NeedForBeamInterruption" of the N258 band and the N257 band may correspond to the phased antenna array #1 and N257 to the phased antenna array #2, respectively. For another example, referring to FIG. 5C, the "NeedForBeamInterruption" values of the N258 and N260 bands may correspond to the phased antenna array #1 and the "NeedForBeamInterruption" of the N257 band, respectively, to the phased antenna array #2. For another example, referring to FIG. 6B, both bands N257 and N258 may correspond to the phased antenna array #3. According to an embodiment, when the "NeedForBeamInterruption" is included in the terminal capability information, it may be described as follows.

According to various embodiments, the terminal operation information may include information indicating a combination of frequency bands capable of receiving a radio signal for each phased array antenna. The information may be referred to as "NeedForBeamInterruption". The "NeedForBeamInterruption" value may be [BandComb1 to BandComb_N]. The N may correspond to the number of combinations of all frequency bands included in the frequency range that the electronic device 120 can receive. For example, if the frequency range that the electronic device 120 can receive includes the N258 band, the N257 band, the N261 band, and the N260 band, the index may be displayed as follows.

BandComb N258 band
(24250Hz-27500Hz) N257 band
(26500Hz-29500Hz) N261 band
(27500Hz-28350Hz) N260 band
(37000Hz-40000Hz) One O 2 O 3 O 4 O 5 O O 6 O O 7 O O 8 O O 9 O O O

Referring to Table 1, it can be seen that a total of nine types can be combined for the four frequency bands. For example, since the N261 band is included in the frequency range of the N257 band, the N261 band and the N257 band may not be counted from the total number of possible combinations. That is, the "NeedForBeamInterruption" value that each phased array antenna may have may correspond to 1 to 9. For example, referring to FIG. 5B, assuming that the second phased array antenna can cover the N261 band (not shown), the "NeedForBeamInterruption" value of the first phased array antenna is 2 (N258 band and N257 band ), and the "NeedForBeamInterruption" value of the second phased array antenna may correspond to 3 (N258 band, N257 band, and N261 band). For another example, referring to FIG. 5C, the "NeedForBeamInterruption" value of the first phased array antenna is 2 (N258 band and N257 band), and the "NeedForBeamInterruption" value of the second phased array antenna is 1 (N260 band). Can correspond to According to an embodiment, when the "NeedForBeamInterruption" is included in the terminal capability information, it may be described as follows.

According to various embodiments, the terminal operation information may include information indicating a combination of component carriers grouped by one phased array antenna. The information may be referred to as "NeedForBeamInterruption". According to an embodiment, an index indicating a combination of component carriers that can be used as a "ServCellIndex" value of QCL (quasi-co-located) information in a transmission configuration indicator (TCI) state may be transmitted as the "NeedForBeamInterruption" value. According to an embodiment, when the "NeedForBeamInterruption" is included in the terminal capability information, it may be described as follows.

In step 730, the base station 110 may perform scheduling for resource allocation. The base station 110 may decode the terminal operation information to identify a frequency band in which a plurality of phased array antennas included in the electronic device 120 to receive a radio signal operate. For example, the base station 110 may identify that the frequency band in which the first phased array antenna of the electronic device 120 operates is a first frequency band and a second frequency band. In this case, the base station 110 may allocate resources considering that analog beamforming of the first frequency band and the second frequency band is simultaneously performed by the first phased array antenna. For example, when the first frequency band and the second frequency band are operated by different phased array antennas, analog beamforming is performed at different symbol timings even if the symbol timings for transmitting the CSI-RS signal for beam training are different. The CSI-RS signal can be successfully received. On the other hand, when the first frequency band and the second frequency band are operated by the same phased array antenna, data is allocated to the first frequency band at a specific symbol timing, and the CSI-RS symbol for the beam training is assigned to the second frequency band. When is assigned, as analog beamforming is performed to receive the CSI-RS signal in the second frequency band, the phase and size of the reception beam are changed in the first frequency band, and data reception may fail.

In step 740, the base station 110 may transmit a CSI-RS for beam management to the electronic device 120. The base station 110 may optimize timing of allocating CSI-RS symbols for each frequency band based on the terminal operation information. For example, when the first frequency band and the second frequency band correspond to different phased array antennas, respectively, the electronic device 120 transmits the CSI-RS signal of the first frequency band and the symbol timing of the second frequency band. It is not necessary to match the symbol timing for transmitting the CSI-RS signal. That is, while transmitting the CSI-RS symbol on the first frequency band, data symbols may be transmitted on the second frequency band. For another example, when the first frequency band and the second frequency band correspond to the same phased array antenna, the electronic device 120 transmits a CSI-RS signal of the first frequency band and the symbol timing of the second frequency band. It may be necessary to synchronize the symbol timing for transmitting the CSI-RS signal. That is, the electronic device 120 may allocate resources to perform beam training or beam sweeping at the same symbol timing between the first frequency band and the second frequency band.

8A illustrates an example of operating a dependent phased array antenna in the case of a single subcarrier spacing according to exemplary embodiments of the present disclosure, and FIG. 8B is a case of a single subcarrier spacing according to exemplary embodiments of the present disclosure. , Another example of operating a dependent phased array antenna is shown.

Referring to FIG. 8A, a first frequency band and a second frequency band of a single subcarrier interval are shown. The single subcarrier spacing may refer to a symbol having the same length between the first frequency band and the second frequency band. According to the new radio (NR), the subcarrier spacing may be set to one of 60KHz or 120KHz. According to FIG. 8A, there is no transmission and reception of terminal operation information between the electronic device 120 and the base station 110, and the base station 110 may not have information on a phased array antenna corresponding to each frequency band of the electronic device 120. have.

The first frequency band may receive a CSI-RS signal for beam training at a third symbol timing. That is, in order to perform beam training on the first frequency band, the phased array antenna may change the phase and size of the reception beam during the third symbol.

The second frequency band may receive a CSI-RS signal for beam training at the fourth symbol timing. That is, in order to perform beam training on the second frequency band, the phased array antenna may change the phase and size of the reception beam during the fourth symbol.

In this case, the first frequency band may receive a data signal at the fourth symbol timing. For example, it may be necessary to receive a data signal at a fourth symbol timing through an optimal reception beam identified based on beam training at the third symbol timing. However, since the first frequency band and the second frequency band are connected to the same phased array antenna, when beam training is performed in the second frequency band during the fourth symbol timing, the phase and magnitude of the received beam of the first frequency band are can be changed. Accordingly, the data signal received through the first frequency band may be received by a receiving beam having a phase and size different from that of the optimal beam, and in the worst case, decoding of the received data may fail.

Referring to FIG. 8B, the electronic device 120 may transmit terminal operation information to the base station 110. The base station 110 may obtain information on a phased array antenna corresponding to each frequency band based on the terminal operation information. For example, the base station 110 may identify that the first frequency band and the second frequency band are controlled by the same phased array antenna. According to an embodiment, the identification may be performed by receiving information indicating a combination of frequency bands capable of receiving a radio signal for each phased array antenna in the above-described embodiments. For example, the "NeedForBeamInterruption" value for the first phased array antenna may correspond to one of 5 to 8.

The base station 110 may perform scheduling and resource allocation for the first frequency band and the second frequency band. For example, since the electronic device 120 can know that the phase and magnitude of the entire signal output from the phased array antenna is changed due to beam training of the second frequency band at the fourth symbol timing, the beam of the first frequency band The training timing may be synchronized to the fourth symbol timing of the second frequency band. Accordingly, the electronic device 120 may prevent deterioration in reception sensitivity of the data signal of the first frequency band or drop of data packets, which may occur due to beam training for the second frequency band at the fourth symbol timing.

In the above-described embodiment, FIG. 8B is illustrated based on delaying the beam training timing of the first frequency band, but is not limited thereto. According to various embodiments, the electronic device 120 may advance the beam training timing of the second frequency band to the third symbol timing. In addition, the electronic device 120 may control to maintain the beam training timing of the first frequency band and the second frequency band and transmit only dummy data at the fourth symbol timing of the first frequency band.

9A is a diagram illustrating an example of operating a dependent phased array antenna in the case of a multi-subcarrier spacing according to exemplary embodiments of the present disclosure, and FIG. 9B is a case of a multi-subcarrier spacing according to exemplary embodiments of the present disclosure. , Another example of operating a dependent phased array antenna is shown.

Referring to FIG. 9A, a first frequency band and a second frequency band of a multi-subcarrier interval are shown. The symbol length of the first frequency band and the symbol length of the second frequency band may be different. For example, when the subcarrier spacing of the first frequency band is 120 KHz and the subcarrier spacing of the second frequency band is 60 KHz, the symbol length of the first frequency band may correspond to half the symbol length of the second frequency band. For example, the second symbol interval of the second frequency band may be the same as the sum of the third symbol and the fourth symbol of the first frequency band.

According to FIG. 9A, there is no transmission and reception of terminal operation information between the electronic device 120 and the base station 110, and the base station 110 may not have information on a phased array antenna corresponding to each frequency band of the electronic device 120. have.

The first frequency band may receive a CSI-RS signal for beam training at the seventh symbol timing. That is, in order to perform beam training on the first frequency band, the phased array antenna may change the phase and size of the reception beam during the seventh symbol of the first frequency band. Meanwhile, since the second frequency band has a subcarrier spacing of 60 KHz, the seventh symbol interval of the first frequency band may correspond to the first half of the fourth symbols of the second frequency band.

The first frequency band may receive a CSI-RS signal for beam training during the seventh symbol, and may receive a data signal in the eighth symbol. On the other hand, in the case of the second frequency band, the symbol interval is doubled while the subcarrier interval is reduced by half, so the CSI-RS signal for beam training is still received at the eighth symbol timing when the first frequency band receives the data signal can do. Since the first frequency band and the second frequency band are analog beamformed by the same phased array antenna, the phase and size of the reception beam may be changed at the eighth symbol timing of the first frequency band. Accordingly, the data signal received through the first frequency band may be received by a receiving beam having a phase and size different from that of the optimal beam, and in the worst case, decoding of the received data may fail. Therefore, when the base station 110 performs resource allocation without considering the multi-subcarrier spacing, the electronic device 120 is the first frequency band corresponding to the latter half of the fourth symbol of the second frequency band. The data signal of the eighth symbol of may not be received.

Referring to FIG. 9B, the electronic device 120 may transmit terminal operation information to the base station 110. The base station 110 may obtain information on a phased array antenna corresponding to each frequency band based on the terminal operation information. For example, the base station 110 may identify that the first frequency band and the second frequency band are controlled by the same phased array antenna.

The base station 110 may perform scheduling and resource allocation for the first frequency band and the second frequency band based on the multi-subcarrier spacing as well as the terminal operation information. For example, the base station 110 can identify that the fourth symbol timing of the second frequency band corresponds to the seventh symbol and the eighth symbol of the first frequency band, so that the CSI-RS signal in the first frequency band The transmission section can be set as two symbol sections. Accordingly, the electronic device 120 changes the phase and magnitude of the reception beam caused by beam training in the second frequency band at the eighth symbol timing of the first frequency band, deteriorates the reception sensitivity of the signal, or drops the data packet. Can be prevented.

In the above-described embodiment, FIG. 8B is illustrated on the basis of increasing the beam training timing of the first frequency band by a factor of two, but is not limited thereto. According to various embodiments, the base station 110 may allocate resources to maintain the beam training timing of the first frequency band and the second frequency band and transmit only dummy data at the eighth symbol timing of the first frequency band. .

10 is a flowchart illustrating a scheduling performed by a base station according to exemplary embodiments of the present disclosure.

Referring to FIG. 10, in step 1010, the base station 110 may receive terminal operation information. The terminal operation information may include information on frequency bands that can be received by each of a plurality of phased array antennas of the electronic device 120.

In step 1020, the base station 110 may determine whether there are at least two or more frequency bands that can be received by a common phased array antenna. For example, the terminal operation information may be index information indicating a combination of frequency bands capable of receiving radio signals for each phased array antenna. Referring to Table 1 in FIG. 7, when the index value is not 1 to 4, the base station 110 may identify that there are at least two or more frequency bands that can be received by a common phased array antenna.

In step 1030, the base station 110 may determine whether subcarrier spacing is the same between at least two or more frequency bands. When the subcarrier spacing is different between frequency bands, the length of the symbol is also different, so it must be considered during resource allocation. If the subcarrier spacing between the at least two or more frequency bands is different from each other, step 1050 may be performed, and if all of the subcarrier spacing between the at least two or more frequency bands are the same, step 1040 may be performed.

In step 1040, the base station 110 may allocate resources so that at least two or more frequency bands perform beam training in the same symbol. In step 1050, the base station 110 may allocate resources to perform beam training for a time having the longest symbol length among symbol lengths of at least two or more frequency bands. For example, if the subcarrier spacing of the first frequency band is twice the subcarrier spacing of the second frequency band, the symbol length of the first frequency band is half the length of the symbol of the second frequency band. During two symbol timings, resources may be allocated to perform beam training at one symbol timing of the second frequency band.

As described above, exemplary embodiments have been disclosed in the drawings and specifications. In the present specification, embodiments have been described using specific terms, but these are only used for the purpose of describing the technical idea of the present disclosure, and are not used to limit the meaning or the scope of the present disclosure described in the claims. . Therefore, those of ordinary skill in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical scope of the present disclosure should be determined by the technical spirit of the appended claims.

Claims (20)

In the electronic device,
A communication unit including a plurality of phased array antennas;
A storage unit for storing terminal operation information including information on at least one frequency band covered by each of the plurality of phased array antennas; And
And a control unit for controlling to transmit the terminal operation information to a base station. The method of claim 1,
The terminal operation information,
The electronic device, wherein the electronic device is included in a UE capability signal periodically transmitted to the base station and transmitted to the base station. The method of claim 1,
The terminal operation information,
Indexes of first phased array antennas capable of receiving a first frequency band among the plurality of phased array antennas, and indexes of second phased array antennas capable of receiving a second frequency band among the plurality of phased array antennas. The electronic device comprising information mapped to the first frequency band and the second frequency band, respectively. The method of claim 1,
The plurality of phased array antennas,
Including a first phased array antenna and a second phased array antenna,
The storage unit,
Includes an index mapping table indicating a combination between a plurality of frequency bands,
The terminal operation information,
In the index mapping table, a first index indicating a combination of frequency bands that can be received through the first phased array antenna and a second index indicating a combination of frequency bands that can be received through the second phased array antenna Electronic device comprising each index. The method of claim 1,
The terminal operation information,
An electronic device comprising information indicating a combination of a plurality of frequency bands covered by a single phased array antenna through transmission configuration indicator (TCI) state information. The method of claim 1,
The electronic device, wherein the at least one frequency band includes a frequency of 450 MHz to 6000 MHz and a frequency of 30 GHz to 100 GHz. The method of claim 1,
The terminal operation information,
An electronic device transmitted through at least one of a radio resource control (RRC) message or system information. In the base station apparatus,
A communication unit for receiving terminal operation information from an electronic device;
And a control unit for performing resource allocation based on the received terminal operation information. The method of claim 8,
The control unit,
And further determining whether there are at least two or more frequency bands that can be received by a common phased array antenna among a plurality of frequency bands based on the received terminal operation information. The method of claim 9,
The control unit,
When there are at least two or more frequency bands that can be received by the common phased array antenna, it is further determined whether subcarrier spacing is the same between the at least two or more frequency bands. The method of claim 10,
The control unit,
When the subcarrier spacing is the same, the base station apparatus allocates resources to perform beam training in the same symbol of the at least two or more frequency bands. The method of claim 10,
The control unit,
When the subcarrier spacing is different, the base station apparatus allocates resources to perform beam training during a time of the longest symbol length among symbol lengths of the at least two or more frequency bands. The method of claim 9,
The control unit,
When at least two or more frequency bands that can be received by the common phased array antenna do not exist, resources are allocated to perform beam training in different symbols for each of the plurality of frequency bands. Base station device. In the method of operating an electronic device including a plurality of phased array antennas,
Storing terminal operation information including information on at least one frequency band covered by each of the plurality of phased array antennas; And
And transmitting the terminal operation information to a base station. The method of claim 14,
The terminal operation information,
And the electronic device is included in a UE capability signal periodically transmitted to the base station and transmitted to the base station. The method of claim 14,
Transmitting the terminal operation information to the base station,
Indexes of first phased array antennas capable of receiving a first frequency band among the plurality of phased array antennas, and indexes of second phased array antennas capable of receiving a second frequency band among the plurality of phased array antennas. Identifying;
Mapping the identified indexes of the first phased array antennas and the indexes of the second phased array antennas to the first frequency band and the second frequency band, respectively; And
And transmitting the information on the mapping as the terminal operation information to the base station. The method of claim 14,
The plurality of phased array antennas,
Including a first phased array antenna and a second phased array antenna,
The electronic device,
Includes an index mapping table indicating a combination between a plurality of frequency bands,
Transmitting the terminal operation information to the base station,
In the index mapping table, a first index indicating a combination of frequency bands that can be received through the first phased array antenna and a second index indicating a combination of frequency bands that can be received through the second phased array antenna Identifying an index; And
And transmitting the identified first index and second index as the terminal operation information to the base station. The method of claim 14,
Transmitting the terminal operation information to the base station,
And transmitting information indicating a combination of a plurality of frequency bands covered by a single phased array antenna to the base station as the terminal operation information via transmission configuration indicator (TCI) state information. How to operate. The method of claim 14,
The at least one frequency band,
An operating method comprising a frequency of 450MHz to 6000MHz and a frequency of 30GHz to 100GHz. The method of claim 14,
The terminal operation information,
Operation method transmitted through at least one of a radio resource control (RRC) message or system information.

Images