KR102480039B1 - Method for beam searching in next generation communication system and an electronic device for the method - Google Patents

Abstract

The present invention comprises the steps of setting beams to be formed in different directions for each horizontal antenna array set, simultaneously radiating a beam for beam search in a set direction from each horizontal antenna array set, and each vertical antenna array set having different A beam search method of an electronic device is provided, which includes setting a beam to be formed in a direction and simultaneously radiating a beam for beam search in a set direction from each vertical antenna array set.

Description

Beam search method in next-generation communication system and electronic device therefor

The present invention relates to a beam search method and an apparatus therefor in a next-generation communication system.

Efforts are being made to develop an improved 5G communication system or pre-5G communication system to meet the growing demand for wireless data traffic after the commercialization of the 4G communication system. For this reason, the 5G communication system or pre-5G communication system is being called a system after a 4G network (Beyond 4G Network) communication system or an LTE system (Post LTE). In order to achieve a high data rate, the 5G communication system is being considered for implementation in a mmWave band (eg, a 60 gigabyte (60 GHz) band). In order to mitigate the path loss of radio waves and increase the propagation distance of radio waves in the ultra-high frequency band, beamforming, massive MIMO, and Full Dimensional MIMO (FD-MIMO) are used in 5G communication systems. ), array antenna, analog beam-forming, and large scale antenna technologies are being discussed. In addition, to improve the network of the system, in the 5G communication system, an evolved small cell, an advanced small cell, a cloud radio access network (cloud RAN), and an ultra-dense network , Device to Device communication (D2D), wireless backhaul, moving network, cooperative communication, Coordinated Multi-Points (CoMP), and interference cancellation etc. are being developed. In addition, in the 5G system, advanced coding modulation (Advanced Coding Modulation: ACM) methods FQAM (Hybrid FSK and QAM Modulation) and SWSC (Sliding Window Superposition Coding), advanced access technologies FBMC (Filter Bank Multi Carrier), NOMA (non orthogonal multiple access), SCMA (sparse code multiple access), etc. are being developed.

Meanwhile, the Internet is evolving from a human-centered connection network in which humans generate and consume information to an Internet of Things (IoT) network in which information is exchanged and processed between distributed components such as things. IoE (Internet of Everything) technology, which combines IoT technology with big data processing technology through connection with a cloud server, etc., is also emerging. In order to implement IoT, technical elements such as sensing technology, wired/wireless communication and network infrastructure, service interface technology, and security technology are required, and recently, sensor networks for connection between objects and machine to machine , M2M), and MTC (Machine Type Communication) technologies are being studied. In the IoT environment, intelligent IT (Internet Technology) services that create new values in human life by collecting and analyzing data generated from connected objects can be provided. IoT is a field of smart home, smart building, smart city, smart car or connected car, smart grid, health care, smart home appliances, advanced medical service, etc. can be applied to

Accordingly, various attempts are being made to apply the 5G communication system to the IoT network. For example, technologies such as sensor network, machine to machine (M2M), and machine type communication (MTC) are implemented by techniques such as beamforming, MIMO, and array antenna, which are 5G communication technologies. will be. The application of the cloud radio access network (cloud RAN) as the big data processing technology described above can be said to be an example of convergence of 5G technology and IoT technology.

In a next-generation communication system, beam search is required to find an optimal beam pair between a transmitter and a receiver. On the other hand, since beams must be sequentially radiated in multiple directions for beam search, a long time and a lot of network resources may be consumed for beam search, which may reduce communication efficiency. Therefore, the present invention intends to provide a method capable of reducing time and resources consumed in beam search.

The present invention comprises the steps of setting beams to be formed in different directions for each horizontal antenna array set, simultaneously radiating a beam for beam search in a set direction from each horizontal antenna array set, and each vertical antenna array set having different A beam search method of an electronic device is provided, which includes setting a beam to be formed in a direction and simultaneously radiating a beam for beam search in a set direction from each vertical antenna array set.

According to an embodiment, the step of radiating a beam from each horizontal antenna array set includes checking the number of beams required for beam search in the horizontal direction, and the number of horizontal antenna array sets is the number of beams in the horizontal direction. If the number of beams required for search is less than the number, dividing the plurality of horizontal antenna array sets into a plurality of groups and beams for simultaneous beam search in a direction set in each horizontal antenna array set sequentially for each of the plurality of divided groups It may include the step of radiating.

According to an embodiment, the step of radiating a beam from each vertical antenna array set includes determining the number of beams required for beam search in the vertical direction, and the number of vertical antenna array sets is the number of beams in the vertical direction. If the number of beams required for search is less than the number, dividing the plurality of vertical antenna array sets into a plurality of groups and beams for simultaneous beam search in a direction set in each vertical antenna array set sequentially for each of the plurality of divided groups It may include the step of radiating.

According to an embodiment, the setting to form beams in different directions for each horizontal antenna array set includes determining information on a beam index differently for each horizontal antenna array set and each horizontal antenna array set. It may include determining a preamble including information on the beam index and information on the cell ID for each step.

According to an embodiment, the preamble may be determined based on a Zadoff-Chu sequence or a linear frequency modulated (LFM) technique.

According to an embodiment, the determining of the preamble may include determining whether the mobility of the electronic device is greater than or equal to a predetermined threshold value, and if the mobility of the electronic device is greater than or equal to the threshold value, the determining of the preamble based on the LFM scheme Determining a preamble including information on the beam index and information on the cell ID for each horizontal antenna array set, and when the mobility of the electronic device is less than the threshold value, based on the Zadoff Chu sequence Determining a preamble including information on the beam index and information on the cell ID for each horizontal antenna array set.

According to an embodiment, the setting to form beams in different directions for each vertical antenna array set includes determining information on a beam index differently for each vertical antenna array set and each vertical antenna array set. It may include determining a preamble including information on the beam index and information on the cell ID for each step.

According to an embodiment, a beam search method of an electronic device includes receiving information on an optimal horizontal beam index and information on an optimal vertical beam index from a receiving device, and information on the optimal horizontal beam index and the optimal horizontal beam index. Forming a beam based on information on a vertical beam index of and transmitting data, wherein the optimal horizontal beam index and the optimal vertical beam index are a preamble determined by the electronic device and the receiving device It may be determined based on the maximum value of the correlation of the signal received by

The present invention sets a plurality of horizontal antenna array sets for radiating beams for beam search, a plurality of vertical antenna array sets for radiating beams for beam search, and beams in different directions for each horizontal antenna array set, Each horizontal antenna array set is controlled to radiate beams for beam search at the same time in the set direction, each vertical antenna array set is set to form beams in different directions, and each vertical antenna array set is set to simultaneously set in the set direction. Provided is an electronic device including a controller that controls to emit a beam for beam search.

According to an embodiment, the control unit checks the number of beams required for beam search in the horizontal direction, and when the number of horizontal antenna array sets is less than the number of beams required for beam search in the horizontal direction, the plurality of It is possible to divide the two horizontal antenna array sets into a plurality of groups, and control the plurality of divided groups to sequentially emit beams for beam search simultaneously in a set direction from each horizontal antenna array set.

According to an embodiment, the controller determines beam index information differently for each horizontal antenna array set, and provides a preamble including information about the beam index and information about a cell ID for each horizontal antenna array set. (preamble) can be determined.

According to an embodiment, the control unit checks whether the mobility of the electronic device is equal to or greater than a predetermined threshold value, and if the mobility of the electronic device is greater than or equal to the threshold value, the control unit determines whether the mobility of the electronic device is greater than or equal to the threshold value, and if the mobility of the electronic device is greater than or equal to the threshold value, the controller determines each horizontal antenna array set based on the LFM technique. Determines a preamble including information on the beam index and information on the cell ID for each horizontal antenna array set based on the Zadoff Chu sequence when the mobility of the electronic device is less than the threshold A preamble including information on the beam index and information on the cell ID may be determined.

According to an embodiment, the control unit receives information on the optimal horizontal beam index and information on the optimal vertical beam index from the receiving device, and determines the information on the optimal horizontal beam index and the optimal vertical beam index. A beam is formed and data is transmitted by controlling the horizontal antenna array set and the vertical antenna array set based on information about the preamble, and the optimal horizontal beam index and the optimal vertical beam index are determined by the electronic device. It may be determined based on the maximum value of the correlation between the signal received by the receiving device and the signal received by the receiving device.

According to an embodiment disclosed in the present invention, time and resources consumed for beam search can be reduced compared to the prior art. In addition, according to an embodiment disclosed in the present invention, it is possible to minimize beam interference caused by simultaneously radiating beams in different directions.

1 is a diagram for explaining a beam search method according to an embodiment disclosed in the present invention.
2 is a flowchart of a beam search method according to an embodiment disclosed in the present invention.
3 is a flowchart of a method for determining a preamble according to an embodiment disclosed in the present invention.
4 is a graph for explaining correlation characteristics of a preamble based on a Zadoff Chu sequence.
5 is a graph for explaining correlation characteristics of a preamble based on LFM when there is no symbol timing offset (STO) and carrier frequency offset (CFO).
6 is a graph comparing autocorrelation characteristics of a preamble based on a Zadoff Chu sequence and a preamble based on LFM when a CFO is present.
7 is a graph comparing detection probabilities of a preamble technology based on a Zadoff Chu sequence and a preamble technology based on LFM when a CFO is present.
8 is a graph comparing the number of beam searches in the case according to the prior art and in the case according to the present technology.

Since the present invention can have various changes and various embodiments, specific embodiments will be described in detail with reference to the drawings. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. Like reference numerals have been used for like elements throughout the description of each figure.

Terms such as first, second, A, and B may be used to describe various components, but the components should not be limited by the terms. These terms are only used for the purpose of distinguishing one component from another. For example, a first element may be termed a second element, and similarly, a second element may be termed a first element, without departing from the scope of the present invention. The term and/or includes a combination of a plurality of related items or any one of a plurality of related items.

It should be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, but other elements may exist in the middle. something to do. On the other hand, when an element is referred to as “directly connected” or “directly connected” to another element, it should be understood that no other element exists in the middle.

Terms used in this application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, the terms "include" or "have" are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that the presence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in the present application, they should not be interpreted in an ideal or excessively formal meaning. don't

Throughout the specification and claims, when a part includes a certain component, it means that it may further include other components, not excluding other components unless otherwise stated.

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

1 is a diagram for explaining a beam search method according to an embodiment disclosed in the present invention.

개의 수평 안테나 어레이 세트와

개의 수직 안테나 어레이 세트를 포함할 수 있다.According to an embodiment, in a next-generation communication system to which beamforming technology is applied, the location of the terminal (MS) may not be known to the base stations (BS1, BS2, and BS3), and accordingly, for communication between the base station and the terminal, all possible directions Beam search for may be required. According to various embodiments, a base station may include a uniform planar array (UPA), and the planar antenna array may include a plurality of horizontal antenna array sets and a plurality of vertical antenna array sets. For example, a base station

two horizontal antenna array sets;

It may include two vertical antenna array sets.

)는 수평 안테나 어레이 세트에서 방사되는 빔 방향을 의미하며, 0에서

값까지의 범위에 포함될 수 있다. 다양한 실시예에 따르면, 제1 수평 안테나 어레이 세트는 제1 방향으로 빔을 형성할 수 있으며, 제2 수평 안테나 어레이 세트는 제2 방향으로 빔을 형성할 수 있다. 즉, 각각의 수평 안테나 어레이 세트는 서로 다른 방향으로 빔을 형성할 수 있다.According to one embodiment, the horizontal beam index (

) means the beam direction radiated from the horizontal antenna array set,

may be included in the range of values. According to various embodiments, the first horizontal antenna array set may form a beam in a first direction, and the second horizontal antenna array set may form a beam in a second direction. That is, each set of horizontal antenna arrays may form beams in different directions.

According to an embodiment, each horizontal antenna array set constituting the planar antenna array may simultaneously generate a beam for beam search. That is, the first horizontal antenna array set and the second horizontal antenna array set radiating beams in the aforementioned first direction may simultaneously radiate beams for beam search.

By the same principle, the first vertical antenna array set can form a beam in a third direction, the second vertical antenna array set can form a beam in a fourth direction, and the first vertical antenna array set and the second vertical antenna can form a beam. The array set may simultaneously emit a beam for beam search.

According to an embodiment, the number of beams required for beam search may be greater than the number of horizontal or vertical antenna sets constituting a planar antenna array. In this case, since beam search for all beams is impossible through one beam radiation, beam search may be performed multiple times in a horizontal or vertical direction.

For example, if the number of beams required for beam search is 16, but the number of horizontal antenna array sets constituting the planar antenna array is 8, beams can be radiated in all 16 directions through one beam radiation. does not exist. Therefore, in this case, a method of simultaneously radiating beams in 8 directions as a primary and simultaneously radiating beams in the remaining 8 directions as a secondary may be considered.

Meanwhile, a beam emitted for beam search may include a preamble including information about a cell ID of a base station and information about a beam index. According to an embodiment, the preamble may be determined based on a Zadoff-Chu sequence or a linear frequency modulated (LFM) technique. According to various embodiments, since the beam index information is included in the radiated beam, the receiving end can accurately determine information on each beam even if a plurality of beams are simultaneously formed at the transmitting end. That is, according to an embodiment disclosed in the present invention, interference between beams generated by simultaneously radiating a plurality of beams can be minimized. A more detailed description of this will be described later through the description of FIG. 3 .

Meanwhile, although FIG. 1 shows a case in which 6 horizontal antenna array sets and 13 vertical antenna array sets are configured, the scope of the present invention should not be limited thereto. The number of horizontal antenna array sets and vertical antenna array sets may be changed according to a designer's needs.

2 is a flowchart of a beam search method according to an embodiment disclosed in the present invention. According to various embodiments, the flowchart shown in FIG. 2 may be performed by the base station or terminal shown in FIG. 1 .

According to an embodiment, in step S210, the electronic device may be configured to form beams in different directions for each horizontal antenna array set constituting the electronic device. According to various embodiments, different parameters may be included in beams having different directions. For example, beams having different directions may include information about different beam indices.

According to an embodiment, through step S220, the electronic device may simultaneously emit a beam for beam search in a set direction. For example, when there are 5 horizontal antenna array sets constituting an electronic device, the electronic device can simultaneously emit 5 beams. On the other hand, if the number of beams required for beam search is 10, but the maximum number of beams that can be simultaneously radiated through the electronic device is 4, the electronic device simultaneously transmits the beam through the horizontal antenna array set three times. can emit More specifically, in this case, four beams may be simultaneously radiated twice, and then the remaining two beams may be simultaneously radiated.

According to an embodiment, in step S230, the electronic device may be configured to form beams in different directions for each vertical antenna array set constituting the electronic device. According to various embodiments, different parameters may be included in beams having different directions. For example, beams having different directions may include information about different beam indices.

According to an embodiment, through step S240, the electronic device may simultaneously emit a beam for beam search in a set direction. For example, if there are 6 vertical antenna array sets constituting an electronic device, the electronic device can simultaneously emit 6 beams. On the other hand, if the number of beams required for beam search is 8, but the maximum number of beams that can be simultaneously radiated through the electronic device is 6, the electronic device simultaneously transmits the beam twice through the vertical antenna array set. can emit More specifically, in this case, first 6 beams are radiated, and then the remaining 2 beams may be simultaneously radiated.

Meanwhile, FIG. 2 discloses that steps S210 to S240 are sequentially performed, but the scope of the present invention should not be limited thereto. For example, after beam radiation (steps S230 and S240) is performed for the vertical antenna array set, beam radiation (steps S210 and S220) for the horizontal antenna array set may be performed.

Also, although not shown, according to an embodiment, after step S240, the electronic device may receive information about the optimal horizontal beam index and the optimal vertical beam index from the receiving device. According to various embodiments, the receiving device may correlate a beam received from the electronic device with a preamble locally generated by the electronic device, and determine a horizontal beam index and a reception beam index having a maximum correlation.

For example, the receiving device may receive a beam emitted by the electronic device for beam search, determine a horizontal antenna array set and a vertical antenna array set having the highest correlation with the preamble among the received beams, and determine the determined horizontal antenna array set and the vertical antenna array set. A horizontal beam index corresponding to the antenna array set and a vertical beam index corresponding to the vertical antenna array set may be transmitted to the electronic device.

According to an embodiment, the electronic device may form a beam based on the horizontal beam index information and the vertical beam index information received from the receiving device, and may transmit and receive data with the receiving device through the formed beam. . According to various embodiments, the electronic device may transmit/receive data in a corresponding direction by forming a three-dimensional beam based on the horizontal beam index information and the vertical beam index information.

3 is a flowchart of a method for determining a preamble according to an embodiment disclosed in the present invention. According to various embodiments, the flowchart shown in FIG. 3 may be performed by the base station or terminal shown in FIG. 1 .

According to an embodiment, through step S310, the electronic device may differently determine beam index information for each horizontal antenna array set. According to various embodiments, beams having different radiation directions may have different beam index information, and based on the beam index information, the receiving end can check the beam direction transmitted by the transmitting end.

According to an embodiment, through step S320, the electronic device may check whether the mobility of the electronic device is equal to or greater than a preset threshold value. According to various embodiments, when the mobility of the electronic device is greater than or equal to the threshold value, the electronic device may determine a preamble to be included in the emitted beam based on the LFM technique through step S330. On the other hand, if the mobility of the electronic device is less than the threshold value, the electronic device may determine a preamble to be included in the emitted beam based on the Zadoff Chu sequence in step S340.

For example, when it is assumed that an electronic device is mounted on a car or a train, the electronic device can be considered to have high mobility. In this case, the electronic device determines a preamble based on the LFM technique and transmits a beam including the preamble. can emit On the other hand, if the electronic device moves due to human motion, the electronic device can be regarded as having low mobility. In this case, the electronic device determines a preamble based on the Zadoff Chu sequence and emits a beam including the preamble. can do.

According to one embodiment, the Zadoff Chu sequence may be used to generate synchronization signals, reference signals and random access preambles. According to various embodiments, the Zadoff Chu sequence may have good correlation and a low peak to average ratio (PAPR).

According to an embodiment, a preamble based on a Zadoff Chu sequence may be determined based on Equation 1 below.

[Equation 1]

는 자도프 추 시퀀스이며,

이고,

이다. 한편,

는 자도프 추 시퀀스의 길이를 의미하며,

는 셀 아이디 c에 대한 루트 인덱스(root index)이고,

는 순환 시프트 간격 상수(circular shift spacing constant)이다.here

is a Zadoff Chu sequence,

ego,

to be. Meanwhile,

is the length of the Zadoff Chu sequence,

is the root index for cell ID c,

is a circular shift spacing constant.

According to an embodiment, a preamble based on the LFM technique may be determined based on Equation 2 below.

[Equation 2]

이며,

는 주파수 스위핑 파라미터(frequency sweeping parameter)를 의미하고,

는 주파수 시프트 파라미터(frequency shift parameter)를 의미하며,

은 LFM 기법 동안 심볼 길이를 의미하고,

는 주파수 스위핑 파라미터의 최대값을 의미하고, BW는 가능 대역폭을 의미한다.here,

is,

Means a frequency sweeping parameter,

Means a frequency shift parameter,

denotes the symbol length during the LFM technique,

denotes the maximum value of the frequency sweeping parameter, and BW denotes the available bandwidth.

Meanwhile, in FIG. 3, only the method of determining the preamble of the beam emitted through the horizontal antenna array set is shown, but the preamble of the beam emitted through the vertical antenna array set can also be determined in the same manner as shown in FIG. Accordingly, a detailed description of a method for determining a preamble for a vertical antenna array set is omitted.

)가 5로 설정되고, 서빙 셀 아이디(

)가 54로 설정되며, 순환 시프트 간격 상수(Q)가 5로 설정되고, 송신기와 수신기가 시간적으로 완벽하게 동기화 된 경우를 가정한 것이다.4 is a graph for explaining correlation characteristics of a preamble based on a Zadoff Chu sequence. More specifically, FIG. 4 is a transmitted beam index (

) is set to 5, and the serving cell ID (

) is set to 54, the cyclic shift interval constant (Q) is set to 5, and the transmitter and receiver are perfectly synchronized in time.

In this case, it can be confirmed through FIG. 4 that a peak occurs at an exact location (a point where a beam index is 5 and a serving cell ID is 54) when CFO (carrier frequency offsets) is 0. On the other hand, it can be confirmed through the graph of FIG. 4 that a peak occurs at a point where the beam index is 13 when the CFO is not 0. This is caused by an ambiguity condition generated in a process of determining a preamble through a Zadoff Chu sequence. When a preamble is determined through a Zadoff Chu sequence, a value must be selected so that the ambiguity condition is not satisfied.

와

의 차이인

가 클수록 감소하는 것을 확인할 수 있으며, 빔간 간섭은

가 충분히 큰 경우 감소하는 것을 확인할 수 있다.5 is a graph for explaining correlation characteristics of a preamble based on LFM when there is no symbol timing offset (STO) and carrier frequency offset (CFO). Through the graph of FIG. 5 , it can be confirmed that the simulation result and the result predicted through the analysis are similar. More specifically, the cross correlation is

Wow

is the difference between

It can be seen that it decreases as , and the inter-beam interference is

It can be seen that it decreases when is large enough.

6 is a graph comparing autocorrelation characteristics of a preamble based on a Zadoff Chu sequence and a preamble based on LFM when a CFO is present. Through the graph of FIG. 6 , it can be confirmed that the simulation result and the result predicted through analysis are similar. More specifically, the autocorrelation of Zadoff Chu sequences can be reduced according to the sinc function. However, an increase in the CFO value does not affect the LFM technique because the LFM technique is not affected by Doppler.

7 is a graph comparing detection probabilities of a preamble technology based on a Zadoff Chu sequence and a preamble technology based on LFM when a CFO is present. 7 is a case where it is assumed that the terminal receives signals from a serving cell and two neighboring cells and the distance between the terminal and three base stations is the same. That is, it is assumed that the signal to interference ratio is 0 dB. The sequence length was set to 127 for both the Zadoff Chu sequence and the LFM, and 16 beams were radiated through the planar antenna array. The detection probability shown in FIG. 7 can be obtained by correlating the received signal with a locally generated preamble and determining the index that maximizes the correlation. When both the horizontal beam index and the vertical beam index checked by the UE are correct, it can be determined that the detection probability of the preamble technology is correct. It can be seen from FIG. 7 that as the CFO (Doppler) increases, the detection probability greatly decreases in the case of the Zadoff Chu sequence, but the detection probability does not decrease in the case of the LFM.

8 is a graph comparing the number of beam searches in the case according to the prior art and in the case according to the present technology. It can be confirmed that the number of beam searches according to the present technology is reduced compared to the case according to the prior art. More specifically, FIG. 8 shows the number of required beam searches in a logarithmic scale. In the case of a communication system having 16 transmission beams and 8 reception beams, 128 beam searches are required according to the prior art, but 32 beam searches are required according to the present technology. Two beam searches are required. In addition, if there are 256 transmission beams and 8 reception beams in the planar antenna array, according to the prior art, 2,048 beam searches are required, and if there are 4,096 antenna array sets in the planar antenna array, according to the prior art, 32,768 Beam search may be required. However, according to the present technology, only 32 beam searches may be required in both cases.

The above description is merely an example of the technical idea of the present invention, and various modifications and variations can be made to those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but to explain, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed according to the claims below, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

Claims (13)

In the beam search method of an electronic device including a plurality of horizontal antenna array sets and a plurality of vertical antenna array sets in a next-generation communication system,
setting to form beams in different directions for each horizontal antenna array set;
radiating a beam for beam search simultaneously in a set direction from each horizontal antenna array set;
setting to form beams in different directions for each vertical antenna array set; and
Radiating a beam for beam search simultaneously in a set direction from each vertical antenna array set,
The setting step of forming beams in different directions for each set of horizontal antenna arrays,
determining beam index information differently for each of the horizontal antenna array sets; and
Determining a preamble including information about the beam index and information about a cell ID for each horizontal antenna array set,
Determining the preamble,
checking whether the mobility of the electronic device is greater than or equal to a predetermined threshold value; and
Determining a preamble including information about the beam index and information about the cell ID for each horizontal antenna array set based on a linear frequency modulated (LFM) technique when the mobility of the electronic device is equal to or greater than the threshold. Characterized in that it includes,
Beam search method for electronic devices. According to claim 1,
The step of radiating a beam from each horizontal antenna array set,
Checking the number of beams required for beam search in a horizontal direction;
dividing the plurality of horizontal antenna array sets into a plurality of groups when the number of horizontal antenna array sets is less than the number of beams required for beam search in the horizontal direction; and
Characterized in that it comprises the step of radiating a beam for beam search at the same time in a direction set in each horizontal antenna array set sequentially by a plurality of divided groups,
Beam search method for electronic devices. According to claim 1,
The step of radiating a beam from each vertical antenna array set,
Checking the number of beams required for beam search in the vertical direction;
dividing the plurality of vertical antenna array sets into a plurality of groups when the number of vertical antenna array sets is less than the number of beams required for beam search in the vertical direction; and
Characterized in that it comprises the step of radiating a beam for beam search at the same time in a direction set in each vertical antenna array set sequentially by a plurality of divided groups,
Beam search method for electronic devices. delete delete According to claim 1,
When the mobility of the electronic device is less than the threshold, determining a preamble including information on the beam index and information on the cell ID for each horizontal antenna array set based on a Zadoff Chu sequence characterized in that,
Beam search method for electronic devices. According to claim 1,
The step of setting the beam to be formed in different directions for each vertical antenna array set,
determining beam index information differently for each of the vertical antenna array sets; and
Determining a preamble including information on the beam index and information on the cell ID for each vertical antenna array set,
Beam search method for electronic devices. According to claim 1,
Receiving information on an optimal horizontal beam index and information on an optimal vertical beam index from a receiving device; and
Forming a beam based on the information on the optimal horizontal beam index and the information on the optimal vertical beam index to transmit data;
Characterized in that the optimal horizontal beam index and the optimal vertical beam index are determined based on the maximum value of the correlation between the preamble determined by the electronic device and the signal received by the receiving device.
Beam search method for electronic devices. In an electronic device in a next-generation communication system,
a plurality of horizontal antenna array sets radiating beams for beam search;
a plurality of vertical antenna array sets radiating beams for beam search; and
Each horizontal antenna array set is set to form a beam in a different direction, and each horizontal antenna array set is controlled to simultaneously radiate a beam for beam search in a set direction, and each vertical antenna array set has a beam in a different direction. And a control unit configured to form a control unit configured to simultaneously radiate a beam for beam search in a direction set in each vertical antenna array set,
The control unit checks whether the mobility of the electronic device is equal to or greater than a preset threshold value, and if the mobility of the electronic device is equal to or greater than the threshold value, the control unit checks whether the mobility of the electronic device is greater than or equal to the threshold value, and if the mobility of the electronic device is greater than or equal to the threshold value, the control unit checks the beam for each horizontal antenna array set based on a linear frequency modulated (LFM) technique. Characterized in determining a preamble including information on an index and information on a cell ID,
electronic device. According to claim 9,
The control unit checks the number of beams required for beam search in the horizontal direction, and when the number of horizontal antenna array sets is less than the number of beams required for beam search in the horizontal direction, the plurality of horizontal antenna array sets It is divided into a plurality of groups, and a beam for beam search is radiated at the same time in a direction set in each horizontal antenna array set sequentially for each of the plurality of divided groups. Characterized in that,
electronic device. delete According to claim 9,
The control unit determines a preamble including information about the beam index and information about the cell ID for each horizontal antenna array set based on a Zadoff Chu sequence when the mobility of the electronic device is less than the threshold characterized by,
electronic device. According to claim 9,
The control unit receives information on the optimal horizontal beam index and information on the optimal vertical beam index from the receiving device, and based on the information on the optimal horizontal beam index and the information on the optimal vertical beam index, Forming a beam by controlling a horizontal antenna array set and the vertical antenna array set to transmit data;
Characterized in that the optimal horizontal beam index and the optimal vertical beam index are determined based on the maximum value of the correlation between the preamble determined by the electronic device and the signal received by the receiving device.
electronic device.

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