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Cell search method based on high and low frequency hybrid networking

A hybrid networking and cell search technology, applied in location-based services, advanced technologies, network planning, etc., can solve problems such as reducing the scope of the space to be searched, and achieve the effect of enhancing search performance

Inactive Publication Date: 2018-09-14
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, some errors will inevitably occur in practical applications, and CI can only be used to reduce the range of the search space, so it is necessary to design a search algorithm to find the most likely antenna configuration

Method used

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  • Cell search method based on high and low frequency hybrid networking
  • Cell search method based on high and low frequency hybrid networking
  • Cell search method based on high and low frequency hybrid networking

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Embodiment Construction

[0030] The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0031] The scheme of the present invention is applied in such as figure 1 In the shown NSA structure system, the synchronous cooperation of the millimeter wave base station and the microwave base station ensures the seamless link of the UE. MC using traditional 3G-4G technology is responsible for the transmission of control plane information such as synchronization signals, while mmWave SC is responsible for increasing capacity. By using different wireless transmission technologies, different coverage areas are stitched together and can be switched between network elements. 5G access networks will be based on heterogeneous network structures in which continuous connectivity can be provided everywhere by using technologies organized in MCs, while deploying a large number of SCs under the coverage of MCs to provide ad...

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Abstract

The invention belongs to the technical field of wireless communication, specifically a cell search method based on high and low frequency hybrid networking. According to the method, the problem that amillimeter wave communication system is high in loss and harsh in transmission environment is solved. In order to ensure a coverage range, according to a 5G network, millimeter wave cells and existing microwave cells are combined, through utilization of a double-link technology, the collaborative service is realized between 5G and 4GLTE systems, so most of users are guaranteed to be kept connected all the time, moreover, the user throughput can be greatly improved, and the frequent switching is avoided, so the cell search method based on high and low frequency hybrid networking is provided. UE reports start location information to a base station, a location and the distance of a UE side are obtained at a base station side, and beam search is carried out in a relatively precise initial range. At a user side, the beam search receiving times is reduced, and the user energy consumption is reduced. Through application of the method, the search energy consumption is reduced, and the cell search performance is improved.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and relates to millimeter wave communication (Millimeter-Wave (mmWave) Communication), beam selection technology, and multiple input multiple output (Multiple Input Multiple Output, MIMO) technology, specifically based on heterogeneous network A mmWave cell search method. 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. To compensate for such losses, large antenna arrays can be employed to achieve high power gains. [0003] In the past, mmWave was used in point-to-point wireless links and is an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J11/00H04W4/02H04W4/021H04W16/28H04W24/10
CPCH04J11/0069H04W4/02H04W4/021H04W16/28H04W24/10Y02D30/70
Inventor 李金泽张忠培李易卿
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA