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Synchronization method and system for radio remote unit of centralized unit of base station

A technology of radio frequency remote unit and centralized unit, which is applied in the field of communication, can solve the problems of wireless signal air interface alignment, etc., achieve the effect of reducing work intensity and improving data synchronization processing ability

Active Publication Date: 2020-03-24
SICHUAN TIANYI COMHEART TELECOM
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a synchronization method and system for remote radio units of centralized units of base stations, which has the advantage of solving the problem of air interface alignment of wireless signals in the case of complex 5G networking

Method used

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  • Synchronization method and system for radio remote unit of centralized unit of base station
  • Synchronization method and system for radio remote unit of centralized unit of base station
  • Synchronization method and system for radio remote unit of centralized unit of base station

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] refer to figure 2 , a method for synchronizing a remote radio unit of a centralized unit of a base station, comprising the following steps,

[0059] S1: Calculate the first delay T1n and the maximum RRU delay T1nmax between each RRU and the rHUB with the mapping relationship, and execute S2;

[0060] S2: Calculate the second time delay T2n between each rHUB and BBU, and execute S3;

[0061] S3: Calculate the maximum delivery time delay Tmax according to the first time delay T1n and the second time delay T2n, Tmax=max(T1n+T2n); execute S4;

[0062] S4: The nth RRU receives data from the antenna, sends the data to the rHUB that has a mapping relationship with the RRU, the rHUB performs data combination, and the rHUB delays the data sent by the nth RRU by T1nmax-T1n before merging, and multiple RRUs The received data is combined into one channel, and the rHUB delay (Tmax-T2n-T1nmax) is sent to the BBU, where T1nmax is the maximum first delay between the nth rHUB and the...

Embodiment 2

[0073] refer to Figure 5 , a method for synchronizing a remote radio unit of a centralized unit of a base station, comprising the following steps,

[0074] S1: Calculate the first delay T1n between each RRU and the rHUB that has a mapping relationship, and execute S2;

[0075] S2: Calculate the second time delay T2n between each rHUB and BBU, and execute S3;

[0076] S3: Calculate the maximum delivery time delay Tmax according to the first time delay T1n and the second time delay T2n, Tmax=max(T1n+T2n); execute S4;

[0077] S4: The BBU sends data to the rHUB that has a mapping relationship with the RRU, the rHUB receives the data sent by the BBU and splits the data into multiple channels of data, and the rHUB delays (Tmax-T1n-T2n) to send to the RRU, where T1n is the The first time delay between the rHUB and the RRU that has a mapping relationship with the rHUB, and T2n is the second time delay between the rHUB and the BBU.

[0078] refer to image 3 , S1 includes the fol...

Embodiment 3

[0087] refer to Figure 6 , a method for synchronizing a remote radio unit of a centralized unit of a base station, comprising the following steps,

[0088] S1: Calculate the first delay T1n and the maximum RRU delay T1nmax between each RRU and the rHUB with the mapping relationship, and execute S2;

[0089] S2: Calculate the second time delay T2n between each rHUB and the BBU, calculate the maximum time delay Tmax according to the first time delay T1n and the second time delay T2n, Tmax=max(T1n+T2n), and execute S3;

[0090] S3: Determine whether the RRU receives data, if so, execute S4;

[0091] S4: The nth RRU receives data from the antenna, sends the data to the rHUB that has a mapping relationship with the RRU, the rHUB performs data combination, and the rHUB delays the data sent by the nth RRU by T1nmax-T1n before merging, and multiple RRUs The received data is combined into one channel, and the rHUB delay (Tmax-T2n-T1nmax) is sent to the BBU, where T1nmax is the maxim...

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Abstract

The invention relates to the technical field of communication and aims to provide a synchronization method and system for radio remote units of a centralized unit of a base station. The synchronization method for the radio remote unit of the centralized unit of the base station comprises the following steps: S1, calculating a first time delay T1n and a maximum RRU time delay T1nmax between each RRU and an rHUB with a mapping relationship, and executing S2; S2, calculating a second time delay T2n between each rHUB and the BBU, and executing S3; S3, calculating the maximum reporting time delay Tmax according to the first time delay T1n and the second time delay T2n, wherein Tmax = max (T1n + T2n) and executing the S4 and S4, enabling the nth RRU to receive the data from the antenna and sendthe data to the rHUB having the mapping relationship with the RRU, the rHUB performs data combination, the data received by the multiple paths of RRUs are combined into one path, and the rHUB delays sending to the BBU. The invention has the advantage of solving the problem of wireless signal air interface alignment under the condition of 5G complex networking.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a synchronization method and system for a remote radio unit of a centralized unit of a base station. Background technique [0002] In the deployment of 5G base stations, there will be a remote radio unit deployment scheme based on multiple rHUBs. In this deployment scheme, the length of the fiber between each rHUB and the remote radio unit is different, especially for multi-level rHUB cascades. Deployment plan, refer to figure 1 , according to the operator's architecture planning for the 5g network, multiple rHUBs will be connected to one BBU, and each rHUB can be connected to a maximum of 8 RRUs. In such a connection, due to the difference in the location of the device, the length of the cable connection is different, which leads to the inconsistency of the time delay. However, 5G communication requires strict alignment of wireless signals on the air interface, otherwis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W56/00H04B10/2575
CPCH04B10/25754H04W56/005
Inventor 栾琨明高中有景叔武
Owner SICHUAN TIANYI COMHEART TELECOM
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