Research On Optimization Scheme Of Transmission Network For LTE

LTE(Long Term Evolution)compared with 2G,3G network,abolished the BSC(Base Station Controller)/ RNC(Radio Network Controller),the overall network architecture gradually flattened.Business traffic through a number of core network elements to converge,the network has changed.LTE networks have faster transmission rates,higher spectrum utilization,wider network spectrum,greater capacity,and greater flexibility.As the LTE network exists S1,X2 and other interfaces,adding L3 VPN can be carried out according to the purpose of IP address forwarding,to meet the business interface requirements and base station IP-based transformation needs.At present,for the L2 layer,L3 layer hybrid network of LTE transmission network,transmission service configuration is more complex,and its network structure and protection methods and traditional base station bearing different ways,which LTE transmission network optimization proposed a higher Claim.Especially in the Vo LTE(Voice over LTE)era,the transmission network transmission quality requirements higher.In this paper,a province of LTE transmission and the local network core network optimization program to study the main research as follows:1)Contrast analysis of the three major operators of the network architecture and its advantages and disadvantages,summed up the characteristics of various network architecture.This paper studies the interconnection technology between the transmission network and the UNI(User Networks Interface)side of the core network to determine the reliable docking application scenario to meet the bearer requirements of the LTE network.2)Analyze the key technologies of the current transmission network carrying LTE services,and compare and summarize the application scenarios of various protection technologies.In order to better support the LTE network,the transmission network needs to adopt a variety of protection technology mixed solution to deal with various failures.This paper analyzes the bridge nodes,ports,tunnels,ring networks and other protection schemes,and studies the traffic flow of typical fault scenes,analyzes the hidden dangers of the network,and puts forward the optimization scheme of the LTE transmission network protection level.3)According to the rationality of various Qo S(Quality of Service)deployment schemes,the Qo S deployment scheme of ports,AC flow points,PWs and TUNNELs is analyzed,and the Qo S deployment scheme for LTE transmission network is given.4)It is not possible to effectively link the downlink port of the L3 PTN network when the uplink and downlink of the L3 PTN network are interrupted.The linkage function of the packet network is studied,and the faults in a network are mapped to another network,so as to protect the switching at the remote end,and the business bypasses the isolated nodes where multiple link faults occur.The research work of this paper has certain reference value for LTE transmission network optimization.