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Beam selection method and device

A beam and target beam technology, applied in the field of beam selection methods and devices, can solve the problems of missing terminal space division scheduling, limited beam information, and no terminal beam information, etc., to achieve the effect of optimizing beam selection

Active Publication Date: 2022-08-05
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this process, the terminal side does not have beam information of other terminals, and can only report according to its own optimal beam.
Due to the limited beam information reported by each user terminal, the information that the base station can obtain has missed many opportunities for terminal space division scheduling

Method used

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  • Beam selection method and device

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0093] The base station classifies the accessed user terminals into 12 beams, covering 120 degrees, and using frequency division resources between the beams. M=3, that is, each beam is allocated 3 resource positions, specifically, code division is used, the measurement signal is a Zadoff-Chu sequence, and the code division is realized by using different mother codes. The beam load is characterized by the number of user terminals connected to the beam.

[0094] The base station pre-defines the Zadoff-Chu sequence of M=3 mother code resources as the symbol of different beam loads, the definition is shown in Table 1, N1, N2 configure the parameters according to experience:

[0095] load Number of beam terminals Zadoff-Chu sequence 1 N1>n u1, v1 2 N2>n≥N1 u2, v2 3 n≥N2 u3;v3

[0096] Table 1

[0097] The generation formula of Zadoff-Chu sequence is as follows:

[0098]

[0099]

[0100] in, is the length of the sequence.

[0...

example 2

[0106] The base station classifies the accessed user terminals into 8 beams, covering 120 degrees, and using frequency division resources between the beams. M=2, that is, 2 resource positions are allocated to each beam. Specifically, time division is used. The measurement signal is Zadoff-Chu sequence. The beam load is characterized by the probability that the beam accesses the user terminal without considering the priority of other factors.

[0107] The base station predefines M=2 time domain resource positions as a set of measurement signals, and different symbols are used as signs of different loads. The definitions are shown in Table 2. The parameters of p1 are configured according to experience:

[0108] load Terminal access probability Time Domain Symbol Numbering 1 >p1 0 2 ≤p1 1

[0109] Table 2

[0110] The formula for calculating the access probability of the b beam is:

[0111]

[0112] in, Indicates the number of existing user te...

example 3

[0118] The base station classifies the accessed user terminals into 6 beams, covering 120 degrees, and using frequency division resources between the beams. M=4, that is, 4 resource positions are allocated to each beam, specifically, 2 frequency division and 2 code division are adopted, and the measurement signal is a PN sequence. The beam load is characterized by the ratio of the number of user terminals in the beam to the total number of user terminals in the base station.

[0119] The base station side predefines M=4 frequency domain and code domain resources, and different symbols are used as signs of different loads. The definitions are shown in Table 3. R1, R2, R3, and R4 configure parameters according to experience:

[0120] load Terminal ratio Frequency domain code domain number 1 0<r≤R1

frequency domain 0; code 0 2 R1<r≤R2

frequency domain 0; code 1 3 R3<r≤R4

frequency domain 1; code 0 4 r>R4 Frequency Domain 1; Code 1...

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Abstract

The invention discloses a beam selection method. The beam selection method includes: acquiring the energy and beam load of each beam of a base station; determining a target beam to be accessed according to the energy and beam load of each beam; reporting target beam information to the base station, to access the target beam. The invention also discloses a beam selection device. The present invention can optimize the beam selection of the user terminal.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, and in particular, to a beam selection method and device. Background technique [0002] With the continuous development of emerging fields such as virtual reality and artificial intelligence, the demand for large-capacity, high-reliability, and low-latency networks is increasing. According to Shannon's formula, one of the most effective ways to increase the system capacity is to increase the transmission bandwidth. Now, the frequency band resources of low frequency (less than 6GHz) are very scarce. Therefore, in order to expand the transmission bandwidth, it is necessary to develop high-frequency communication, so that high-speed communication of large data volume can be carried out by using the large bandwidth that has not been developed and used in high frequency. [0003] The biggest difference between high-frequency signals and low-frequency signals is their high path ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/0404H04B7/0408H04W24/10
CPCH04B7/0404H04B7/0408H04W24/10
Inventor 孙振喆李萍陈林
Owner ZTE CORP