As the traditional 4th Generation Mobile Communication (4G) bearer network can only meet the 2G

3G and 4G wireless service backhaul bearer

it cannot meet the higher requirements of 5G wireless backhaul on the bearer network in terms of bandwidth

delay

slicing

and reliability. It also cannot satisfy the extremely demanding real-time protection switching requirements in various 5G service scenarios

as well as the service protection and fast convergence requirements in the enhanced Mobile Broadband (eMBB) scenario. In order to solve this issue

the article proposes a Segmented Routing (SR) tunnel technology in the 5G bearer network protection application scheme. This scheme adopts the connection-oriented SR-Transport Profile (SR-TP) tunnel enhancement technology for the end-to-end protection application of the north-south services in the 5G bearer network

and the optimal SR-Best Effort (SR-BE) tunnel technology for the east-west direction protection applications for connectionless services. Experimental results show that

compared with the traditional 4G bearer network protection scheme

it can fully solve the various requirements of the 5G eMBB service scenario for the bearer network. The service protection switching is completed within 50 ms

which can fully meet the carrier-level protection switching requirements.