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Communication method, RUU, RUHUB and communication system

A communication system and communication method technology, applied in transmission systems, electromagnetic wave transmission systems, optical fiber transmission, etc., can solve problems such as limited bandwidth and quantity of optical fibers, and increased costs

Inactive Publication Date: 2020-07-07
CHENGDU HUAWEI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The time-domain IQ digital signal is generally transmitted between the BBU and the RHUB through the common public radio interface (CPRI). If the communication network is upgraded from 4G to 5G, there will inevitably be a greater demand for the bandwidth of the fronthaul interface. The bandwidth and number of deployed optical fibers are limited. For example, some operators can only provide one optical fiber with a bandwidth of 10Gbps. 5G supports a 100MHz bandwidth cell. Calculated according to the CPRI compression ratio of 3.2:1, a single 10G optical fiber can only transmit 1 Therefore, the existing optical fibers cannot meet the bandwidth requirements of the 5G residential area. If new optical fibers are added, the cost will increase significantly.

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  • Communication method, RUU, RUHUB and communication system
  • Communication method, RUU, RUHUB and communication system
  • Communication method, RUU, RUHUB and communication system

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Embodiment Construction

[0046] The application will be described in further detail below in conjunction with the accompanying drawings. In the description of the present application, unless otherwise specified, "plurality" means two or more. In the description of this application, words such as "first", "second", and "third" are only used to distinguish the purpose of description, and cannot be understood as indicating or implying relative importance, nor as indicating or implying order.

[0047] figure 1 It is a system architecture of an indoor digital cellular system in the prior art.

[0048] Such as figure 1 As shown, the three-level structure of BBU-RHUB-RRU in the indoor digital cellular system includes BBU110, RHUB120 and at least one pRRU130, wherein, BBU110 and RHUB120 are connected through optical fiber or network cable interface, and the distance between them is generally tens of kilometers; RHUB120 and pRRU130 are connected through an optical fiber or network cable interface, and the ...

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Abstract

The invention provides a communication method, an RUU, an RUHUB and a communication system. The method can be applied to a communication system, and the communication system comprises a BBU and an RHUB connected with the BBU. The method comprises the following steps that the RHUB receives IP / UDP data from the BBU; and the RHUB processes the IP / UDP data to obtain digital intermediate frequency data. Thus, the downlink data transmitted between the RHUB and the BBU is IP / UDP data; the digital intermediate-frequency data is not the digital intermediate-frequency data in the prior art; the data volume of the IP / UDP data is far less than the data volume of the digital intermediate frequency data; thus, the bandwidth requirement of the forward transmission interface between the RHUB and the BBU in the downlink direction can be reduced, so the RHUB and the BBU can meet the bandwidth requirement of communication in the uplink direction by using the existing optical fiber under the condition that the spectral bandwidth of a cell is sharply increased.

Description

technical field [0001] The present application relates to the technical field of communication, and in particular to a communication method, RUU, RHUB and communication system. Background technique [0002] In the existing indoor digital cellular system, a three-level architecture of base band unit (BBU)-remote radio unit Hub (RHUB)-low power RRU (picro-RRU, pRRU) is generally adopted. Wherein, the transmission interface between the BBU and the RHUB, and the transmission interface between the RHUB and the pRRU are called fronthaul interfaces. The deployment cost of an indoor digital cellular system is closely related to the bandwidth of the fronthaul interface. For example, greater bandwidth requires more expensive optical modules, and deploying multiple optical fibers will greatly increase deployment costs. [0003] In the existing BBU-RHUB-RRU three-level architecture, the distance between the BBU and the RHUB is relatively long during deployment, usually tens of kilomet...

Claims

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Application Information

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IPC IPC(8): H04B10/2575
CPCH04B10/25753
Inventor 曾礼君
Owner CHENGDU HUAWEI TECH