Method and system for optimizing inter-operation of 3G network and 4G network

Abstract

The invention provides a method and a system for optimizing inter-operation of a 3G network and a 4G network. The method comprises the following steps: receiving a connection release signaling RRC CONNECTION RELEASE transmitted from the 3G network; judging whether a present network is in a 4G network weak covered area or not; if yes, judging the reason for establishing RRC according to the connection release signaling, or else executing redirection from the 3G network to the 4G network; when the reason for establishing RRC is not a business service, keeping a present 3G network state; if the reason for establishing RRC is a business service, judging whether a redirection failure record from the 3G network to the 4G network is available or not in the connection execution process; if yes, canceling the operation of redirection from the 3G network to the 4G network within first preset time with the combination of a set punishment timer, or else executing redirection from the 3G network to the 4G network, thereby effectively reducing ping-pong inter-operation times between the 3G network and 4G network, of 3G network and 4G network users. The problem of inter-operation influence caused by weak covering is solved, and the user perception is improved.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method and system for optimizing the interoperability between 3G and 4G. Background technique [0002] At present, in scenarios where 3G continuous coverage areas exist and 4G weak coverage or discontinuous coverage areas exist, user perception of interoperability between 3G and 4G is poor. [0003] Since the current commercial terminals support measurement-based redirection between 3G and 4G and do not support measurement-based redirection between 3G and 4G, the measurement-based redirection between 3G and 4G and the radio resource control protocol RRC (Radio Resource Control ) release signaling release 3, 4G redirection function (does not support measurement-based), such as figure 1 As shown, due to the different triggering timings of these two algorithms, the redirection interoperability between 3G and 4G occurs at different stages, but it still cannot solve the inte...

AI Technical Summary

Problems solved by technology

[0002] At present, in the 3G continuous coverage area, there are 4G weak or discontinuous coverage areas, and the user perception of interoperability between 3G and 4G is poor.

[0003] Since the current commercial terminals support measurement-based redirection between 3G and 4G and do not support measurement-based redirection between 3G and 4G, the measurement-based redirection between 3G and 4G and the radio resource control protocol RRC (Radio Resource Control ) release signaling release 3, 4G redirection function (does not support measurement-based), such as figure 1 As shown, due to the different triggering timings of these two algorithms, the redirection interoperability between 3G and 4G occurs at different stages, but it still cannot solve the interoperability problem in the scenario where 4G is a weak coverage area, which may lead to two kind of problem:

[0007] The existing RRC release redirection technology between 3G and 4G triggers the redirection process based on the connection release signaling (RRC CONNECTION RELEASE) message issued by the network side, without considering the reasons for RRC establishment, that is, including all RRC establishment reasons, There is no distinction between service classes and non-service classes. The main network side sends the RRC CONNECTION RELEASE message, which will trigger the redirection process between 3G and 4G, which will easily cause redirection failure.

[0008] The redirection technology between 3G and 4G in the existing RRC release needs to ensure the success rate of redirection between 3G and 4G only when 4G is in a continuous coverage area. The user is prone to ping-pong redirection interoperability between 3G and 4G, which not only increases the network signaling load, but also easily causes signaling storms. When the number of users increases suddenly, the system is prone to crash and seriously affects user perception.

[0009] The redirection technology between 3G and 4G in the existing RRC release does not consider the redirection failure penalty measures for the same user triggering multiple redirection failures between 3G and 4G in a short period of time.

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