Measurement method of cell switching parameter based on geographic location information

A technology of geographic location information and measurement methods, which is applied in the field of high-low frequency mixed networking technology, can solve the problems of low accuracy and efficiency of cell switching, and large measurement time consumption, so as to reduce the number of beam searches, improve accuracy and efficiency, and improve frequency spectrum. efficiency effect

Inactive Publication Date: 2018-09-28
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of high time consumption of beam alignment and handover parameter measurement between mobile users and base stations, as wel...

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  • Measurement method of cell switching parameter based on geographic location information
  • Measurement method of cell switching parameter based on geographic location information
  • Measurement method of cell switching parameter based on geographic location information

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[0034] The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0035] The scheme of the present invention is applied in such as figure 1 and figure 2 In the high-low frequency mixed networking system shown, considering the problems of beam search range and excessive time overhead in the current parameter measurement algorithm for cell handover, the present invention will use the geographic location information of low-frequency LTE to assist beam alignment, especially for Hybrid beamforming systems find optimal transmit and receive beam pairs. For convenience of description, the image 3 and Figure 4 The specific structure system shown is taken as an example, the base station is equipped with N BS = 20 antennas, user equipment N U = 4 millimeter wave antennas. Mobile users always maintain LTE connections with LTE macro base stations in the area, and LTE base stations mai...

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Abstract

The invention belongs to the technical field of the wireless communication, and specifically relates to a measurement method of a cell switching parameter based on geographic location information. Forsolving the problems that the beam alignment and the switching parameter measurement between a mobile user and a base station are large in time consuming and the cell switching is low in precision and efficiency, the invention puts forwards an optimization method of cell switching parameter measurement in a high-low frequency hybrid networking system based on the geographic information. Through the assistance of the low-frequency geographic location information, the searching range is compressed at each of the user side and the base station side, and the beam searching is performed in a moreprecise initial extent. The beam searching frequency is reduced, the time required by beam alignment between the mobile user and the base station is reduced, and the beam alignment precision is improved. Therefore, the user and the base station can directly scan the beam nearby a sight distance direction, the spectrum efficiency is greatly improved, the accuracy and the effectiveness of the measurement parameter of the cell switch are increased, thereby improving the cell switching precision and efficiency and increasing the system capacity.

Description

technical field [0001] The present invention belongs to the technical field of wireless communication, and relates to millimeter-wave communication (Millimeter-Wave (mmWave) Communication), long-term evolution (Long Term Evolution) technology, beam selection technology, cell switching technology, and high-low frequency hybrid networking technology, specifically It is a method for measuring and optimizing mobile users' cell switching parameters based on geographic information in a high-low frequency mixed networking system. Background technique [0002] With the development of wireless communication, millimeter wave (Millimeter wave (mmWave)) is considered to be one of the core technology candidates for next-generation wireless communication technology, which can greatly broaden the available spectrum resources. However, compared with traditional microwave frequencies, A key challenge in using the mmWave frequency band is its severe signal propagation loss. In order to enhan...

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Application Information

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IPC IPC(8): H04W4/02H04W36/00H04W36/08H04L5/00H04B7/0456
CPCH04B7/0456H04L5/0048H04W4/02H04W4/023H04W36/0083H04W36/08
Inventor 赵柏睿张忠培胡城中
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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