Application of IPV6 in 3G network

3G technology is a complex system engineering, in this system engineering needs some advanced technology to ensure that this system engineering can be realized. In the 3G data service implementation, specific to the user's address, addressing and routing technology, 3G network will adopt IPV6 technology. IPV6 is the next generation interconnection network's address, addressing and routing technology, it is based on IPv4, overcome some of the key defects of IPV4 technology, especially suitable for wireless data service environment.

Application of IPV6 in 3G

The development of 3G business, especially the development of data business needs the network to provide a large number of IP address as a technology guarantee. However, the current IPV4 technology is very difficult to meet the 3G network address requirements. The main reason is that IPV4 technology faces the plight of exhaustion of addresses. Although the IPV4 has 32-bit address space, can accommodate 4,294,967,296 addresses, but the IP address allocation principle caused a lot of waste of IP address, so we actually share only millions of IP addresses. This is far from satisfying the address needs of future mobile and fixed users. For the current distribution of IP address near exhaustion situation, some structures have to adopt private IP address, these institutions network and other agencies of the network through the public IP network interconnection must be through the network Address Translation device (NAT) to convert private IP address to a common IP address in order to interconnect. NAT address Translation not only creates bottlenecks in network performance, but some applications cannot penetrate NAT, such as encrypted packets and packets that do not use UDP and TCP protocol headers. This shows that the IPV4 address restrictions affect the development of the network and the implementation of the application, especially in the third generation of mobile communication networks that require a large number of IP addresses.

The IPV6 protocol greatly expands the range of IP addresses, which employs 128-bit address space, 340,282,366,920,938,463,463,374,607,431,768,211,456 addresses and 296 times times the number of IPV4 addresses. Such a large address space can meet the present and future address allocation needs, such address space means that the earth can have 665,570,793,348,866,943,898,599 addresses per square meter, mobile phones, automobiles, meters, electrical equipment on earth, Even every grain of sand can have multiple IP addresses. The IP address on the earth can be said to be inexhaustible. With IPV6 technology, there is no need to use the current means of saving IP address, such as NAT technology, which brings great benefits to the realization of our network design and application. This shows that the biggest advantage of using IPV6 is to solve the problem of address exhaustion. (Computer science)

In addition to addressing address issues, IPV6 has the following benefits compared to IPV4:

Structural design of 1.ipv6 using layered structure

The hierarchical structure of IP address can express the global network structure and routing structure, this layered IP address design greatly reduces the routing table of backbone routing device.

2.ipv6 has a more efficient ability to automatically assign addresses

Compared with IPv4, even without a DHCP server, IPV6 devices can automatically configure their IP addresses and can be configured in a very short time.

3.ipv6 can better implement the Ipqos

The stream signature segment in the IPV6 protocol can classify IP streams, so that IPV6 devices can handle different streams differently.

IPV6, with its huge technical advantages, will play an important role in the future IP network, especially in the third generation mobile communication network, IPV6 will play an important role. 3G Network Packet Core network (PS domain) is in fact an IP access network, through this core network mobile users can access to the Internet to enjoy mobile surfing services. When mobile users access the mobile network, access to information services need to obtain an IP address, the mobile user can get the address may be IPV4 address can also be IPv6 address, but the use of IPV6 technology can avoid users to enjoy the mobile data business address restrictions.

IPV6 Real implementation still takes time

IPV6 technology has its enormous advantages, but the implementation of IPV6 is not a one-time, at present, a large number of network equipment and applications are based on IPV4 design, does not support IPV6, to achieve IPv6 need step-by-step steady transition, can not be anxious. We can upgrade some of the network nodes to the nodes supported by the IPV6 and IPv4 two ways, and then upgrade to the IPV6 node. The transition schemes such as tunneling, address conversion and double protocol stack need to be considered before the whole network node is upgraded to IPV6 node.

In our 3G network is also the case, 3G network IPv6 first possible in the mobile phone terminal to achieve, this is also the business of leading ideas. If the 3G terminal Shuai first adopted the IPV6 technology, and the existing Internet has not adopted IPV6 technology, the need for a transition, commonly used in the transition to IPV4 Tunnel load IPV6 package technology, as well as IPV6 and IPV4 conversion technology and a dual-protocol stack and many other technologies. For example, if the 3G terminal uses the IPV6 address, the Internet server is the IPV4 server, then can adopt the host to the router IPv4 tunnel carries the IPV6 package the technology. The IPV6 package is encapsulated in the IPv4 tunnel at the 3G terminal and then routed to the destination host via the IPV4 network, or on the GGSN package.

It can be seen that to truly achieve IPv6 still have a long way to go, in the absence of End-to-end IPv6, IPv6 all the advantages of the right to play out. The same is true for 3G networks, if the only implementation of IPV6 in the group domain of 3G network can not really solve the current IPV4 network problems. Our march towards IPV6 needs to be realized step by piece.