CN-116546486-B - Mobility management method based on route notification protocol

CN116546486BCN 116546486 BCN116546486 BCN 116546486BCN-116546486-B

Abstract

The invention designs a mobility management method based on a route notification protocol, which abstracts network equipment into two functional entities of access equipment and switching equipment, wherein the access equipment finishes the distribution of user IP, the switching equipment uses a dynamic route protocol to realize networking, and the access equipment and the switching equipment use the route notification protocol to realize the notification of user IP addresses. After the user moves, switching the access equipment, deleting the user route information by the old access equipment through the route notification protocol, adding the user route information by the new access equipment through the route notification protocol, and updating the user route in the whole network by the switching equipment through the dynamic route protocol according to the content of the route notification protocol, so that the user can realize data intercommunication with the network through the new access equipment. In the whole user moving process, the user IP address is not changed, thus ensuring the business not to be interrupted. The method does not need tunnel encapsulation processing on the data, and can have higher data processing efficiency.

Inventors

WANG YU
TENG XUEBIN
LI HUANHUAN
CAO XIAONAN
FU JUAN
ZHANG YONG

Assignees

中国电子科技集团公司第五十四研究所

Dates

Publication Date: 20260505
Application Date: 20230606

Claims (3)

1. A mobility management method based on a route advertisement protocol, comprising the steps of: (101) An open interface is configured between the access equipment and the switching equipment, a special route notification protocol is used for message interaction, and the address and port information of the connected switching equipment are configured in the access equipment; (102) After the user is successful in network access, the registered access equipment distributes an IP address for the user and sends the IP address and the access position information of the user to the connected switching equipment in the form of a route notification message; (103) After receiving the route notification message carrying the IP address, the switching equipment uses a dynamic routing protocol to synchronize the IP address of the user and the access position information to other switching equipment, thereby realizing the data communication between the switching equipment and the user; (104) After the user moves, accessing to the network from the new access equipment, informing the connected switching equipment of deleting the IP address and the access position information of the corresponding user by the old access equipment through a special routing notification message, and informing the connected switching equipment of adding the IP address and the access position information of the corresponding user by the new access equipment through the special routing notification message; (105) The switching device to which the new access device is connected uses a dynamic routing protocol to synchronize the user IP address and access location information to other switching devices and to transfer the next hop to the user IP address from the old access device to the new access device through which the subsequent data is sent to the user.
2. A method of mobility management based on a route advertisement protocol according to claim 1, wherein the access device comprises a device with wireless or wired access capabilities and the switching device comprises a device with route switching capabilities.
3. The method of claim 1, wherein the route advertisement message includes an advertisement type, an index number, a message content length, a number of routes, an operation type, and a user IP address.

Description

Mobility management method based on route notification protocol Technical Field The invention relates to a mobility management method based on a route notification protocol in the field of mobile communication, which is suitable for any communication system which needs mobility management and keeps business continuity, and is used for realizing that a terminal user keeps business uninterrupted when accessing to a network from different access points in the moving process. Background With the development of communication technology, how to keep services from being interrupted during the movement of users is a problem that must be solved in mobility management. In a conventional mobile communication system, a tunnel-based technical scheme is adopted, in which a data anchor point exists, after a user transmits data to an access device, the access device firstly tunnels the data, and forwards the encapsulated data to the data anchor point, the data anchor point decapsulates the data, and then forwards the decapsulated data to a real destination address. After the user moves and the access device is replaced, the access device uses the new tunnel encapsulation to forward the data to the data anchor point. The mobility management method based on the tunnel and the anchor point can realize no sense of user and no interruption of service, but still has the following problems. Firstly, the access equipment and the data anchor point are used for packaging and unpacking user data to seriously reduce the data processing efficiency, secondly, the data anchor point is used as a unified data processing center, and once the data processing center fails, the data communication of the whole network is abnormal, so that the scheme cannot be applied to a distributed network, and the requirement of frequent change of the topology of the mobile network cannot be met. Disclosure of Invention The invention designs a mobility management method based on a route notification protocol aiming at the problems of low data processing efficiency and poor expandability of the traditional mobility management method based on a tunnel. The technical scheme adopted by the invention is as follows: A mobility management method based on a route advertisement protocol, comprising the steps of: (101) An open interface is configured between the access equipment and the switching equipment, a special route notification protocol is used for message interaction, and the address and port information of the connected switching equipment are configured in the access equipment; (102) After the user is successful in network access, the registered access equipment distributes an IP address for the user and sends the IP address and the access position information of the user to the connected switching equipment in the form of a route notification message; (103) After receiving the route notification message carrying the IP address, the switching equipment uses a dynamic routing protocol to synchronize the IP address of the user and the access position information to other switching equipment, thereby realizing the data communication between the switching equipment and the user; (104) After the user moves, accessing to the network from the new access equipment, informing the connected switching equipment of deleting the IP address and the access position information of the corresponding user by the old access equipment through a special routing notification message, and informing the connected switching equipment of adding the IP address and the access position information of the corresponding user by the new access equipment through the special routing notification message; (105) The switching device to which the new access device is connected uses a dynamic routing protocol to synchronize the user IP address and access location information to other switching devices and to transfer the next hop to the user IP address from the old access device to the new access device through which the subsequent data is sent to the user. Further, the access device comprises a device with wireless or wired access function, and the switching device comprises a device with route switching capability. Further, the route advertisement message contains an advertisement type, an index number, a message content length, a route number, an operation type, and a user IP address. Compared with the background technology, the invention has the following advantages: the invention adopts the idea of route synchronization, does not need to carry out tunnel encapsulation and decapsulation on the data, and is more efficient in data processing. The invention abstracts the network into two parts of the access equipment and the switching equipment, the interface is easier to standardize, and the invention is applicable to heterogeneous means access scenes. The invention does not need data anchor points, can be applied to a distributed network, and has stronger survivability. Drawings FIG. 1 is a