Research On LTE IP RAN Construction Plan For China Telecom Shenyang Branch

At present, many domestic communications operators make great efforts in the fourthgeneration communication technologies (4G), however, due to the continuous upgrading ofthe terminal equipment, the ability of network data transmission cannot match the need ofmarket. Wireless business, fixed-line business and integrated service are developed rapidly,which leads to capacity shortage of transmission core, aggregation layer. Therefore, we needto optimize and expand local transport networks to ensure the smooth operation of relatedbusiness, at the same time, to provide a more stable, secure and high quality transmissionchannel to mobile business, exchange business, data business, Internet business, etc. Fromthe current development trend, many manufacturers can provide IP RAN equipment withgood business carrying capacity.This paper is on the background of China Telecom4G dual networks (TD-LTE andLTE-FDD) IP RAN transport system, we take the experimental way to explore constructionscheme of Shenyang telecom IP LTE RAN. Since2012, after three years of construction,Shenyang telecom IP RAN bearing network core layer and aggregation layer began to takeshape, and began to build the access layer. Under the premise, this paper experiments withaccess layer scheme of Shenyang telecom IP RAN, in order to find the best constructionscheme. The design of experiment: we choose two groups base stations of access layer for IPRAN networking from east and north area of Shenyang.We select two groups of loops with12base stations in the original networkmanagement system, the top allied port capacity is fixed at1GE, because current networkconditions are limited, so we cannot fix the capacity of all loops at10GE. We install Bequipment for two base stations, and install A equipment for the other base stationsaccording to the existing network nodes. Use this two B equipment to link10,6Aequipment on the basis of the original ring. Afterwards, we test the transmission rate andbandwidth of all base stations with A equipment. The four groups of data are compared bythe way of testing: group1(A pair of B equipment with10A equipment in the east), group2(A pair of B equipment with6A equipment in the east), group3(A pair of B equipmentwith10A equipment in the north), group4(A pair of B equipment with6A equipment in thenorth). After analysis, we can find the best scheme, namely the best amount of A equipmentlinked with B equipment. When the A equipment is too much, the value should be comparedto calculate the convergence ratio, in order to make the corresponding adjustment proposals. In this paper, we can find local transmission network access layer construction schemeof clear building structure, convenient and flexible expansion, adapting to the futuredevelopment, which can prepare for comprehensive fusion of local transport networks anduniform transmission platform construction plan in the future. The compared experimentaldata can provide reference for network optimization, and provide experimental basis for IPRAN network optimization. Meanwhile, this paper can provide test method and experiencefor after the operation provides test methods and experience for later research work.