A communication method between a rack and a machine disk in a mobile fronthaul network

Abstract

Disclosed is a communication method between a frame and discs in a mobile forward network, which relates to the field of network communication. The method comprises that: S1, each sub-frame is provided with a multi-port bus adapter corresponding to multiple communication ports, which are divided into first type ports, second type ports, and so on; S2, NMU sends sub-frame access authorities to all first type discs; the first type discs reads an ID number of the sub-frame where the first type discs are and sends the ID number to the NMU for storage; and the NMU deprives the sub-frame access authorities of the first type discs and releases a bus; S3, according to the S2, discs read ID numbers of sub-frames where the discs are in sequence; S4, a topological graph of a relation between discs and sub-frames is established; and S5, priorities of the communication ports of each sub-frame are arranged, and when two communication ports of one same sub-frame are connected to discs, the communication port with the higher priority communicates with the disc which the communication port connected to and deprives the sub-frame access authorities of the other discs. According to the communication method, a web master can monitor a whole frame in real time, and the reliability and efficiency are improved.

Description

Technical field [0001] The invention relates to the field of network communication, in particular to a communication method between a rack and a disk in a mobile fronthaul network. Background technique [0002] C-RAN is a radio access network solution based on Centralized Processing, Collaborative Radio and Real-time Cloud Infrastructure. WDM (Wavelength Division Multipleplexing, Wavelength Division Multiplexing) bearer mode is used for signal transmission between BBU (baseband pool) and RRU (distributed remote equipment). Different from the traditional OTN (Optical Transport Network) equipment, the C-RAN wavelength division transmission equipment omits the backplane bus used for signal crossover in the physical architecture, and each disk in the network element is not on the rack. The division of the slots may be randomly distributed in each subframe on the rack. The NMU (Network Management Unit) of the C-RAN wavelength division transmission equipment is connected to the chass...

AI Technical Summary

Problems solved by technology

In this case, since the NMU cannot use the backplane bus to transmit slot information to distinguish its subordinate disks, the disks cannot be directly positioned on the rack.

[0003] like figure 1 As shown, in the C-RAN WDM transmission equipment, for n sub-frames on the rack, there are a total of m disks that need to be installed on the rack. Assume that each sub-frame can accommodate three Three communication ports a, b, or c are provided, but the communication between the NMU and the rack has the following problems: the corresponding relationship between the disk and the sub-frame is uncertain, and the specific location of the disk cannot be determined; due to the lack of a backplane bus, each communication port The disks among them cannot self-negotiate the order of communication, but at the same time, only one of the disks is allowed to access it in the subframe, so multiple disks accessing at the same time will cause communication bus conflicts; In case of network topology changes, access rights need to be assigned on the fly

However, once sub-frames or disks are added, deleted, or communication failures occur, all disks need to be relocated, and the communication and positioning time of each disk is long. When the number m of disks is too large, the initialization The time will also increase, the NMU policy allocation process runs frequently, takes up too many CPU resources, and the sub-frame control efficiency is low

Images