Method of Home Node B crossing NAT in WCDMA system

Abstract

The invention relates to a method of Home Node B crossing NAT in a WCDMA system, which has the following steps: an NBAP protocol module on the Node B side and an STUN customer end exchange information to acquire the address information of the transmission layer after Node B crossing NAT; an STUN server on the RNC side and the STUN customer end exchange information to check the address information of the transmission layer after Node B crossing NAT; response is generated by filling the address information of the transmission layer after crossing NAT into information elements sent to the information of the RNC side by the NBAP protocol module on the Node B side, and RNC is used for sending the generated response to establish the wireless chain circuit with the RNC.

Description

technical field [0001] The present invention relates to a wideband code division multiple access system, in particular to a wideband code division multiple access (hereinafter referred to as WCDMA) system by integrating STUN (Simple Traversal of UDP over NATs) in HomeNodeB and RNC (radio network controller) , UDP simple traversal of NAT) client and server to realize the method of traversing NAT (Network Address Translation). Background technique [0002] HomeNodeB is also called FemtoCell, that is, home commercial base station, which is a cutting-edge technology and a hot topic in the 3G field. HomeNodeB can be seamlessly connected with the operator's original network equipment, so as to make full use of the existing broadband access resources of users, and provide mobile and fixed network convergence services for end users. Through the HomeNodeB, a large number of mobile services are absorbed by the HomeNodeB, which can greatly reduce the number of operators' macro cells a...

AI Technical Summary

Problems solved by technology

Therefore, the application layer protocol that first initiates the connection on the public network side cannot effectively traverse the NAT network;

[0013] 3. The NAPT scheme must share the unique public network IP address with multiple private network IP addresses, and map through the port numbers of upper-layer protocols such as TCP and UDP

[0019] Since the destination address of the IP packet carrying the downlink synchronization message is a private IP address, the IP packet cannot traverse the public network, and the downlink synchronization message sent by the RNC also cannot reach the HomeNodeB, resulting in the failure of the call establishment process

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