Network redirection method and device

Abstract

The invention provides a network redirection method and device. A first access device receives an RRC connection request which is sent by UE in order to access a first frequency point of a UTRAN. The RRC connection request comprises an identification code which is used for instructing the UE to support an E-UTRAN. The first frequency point carries an RRC connection release message which is sent by a second access device to the UE. The first access device judges whether the UE is allowed to access the UTRAN or not, if not and the rejection frequency is not above the preset frequency, the value of the identification code is modified to instruct the UE not to support the E-UTRAN and a first RRC connection rejection message is sent to the UE. An RRC connection request which is sent again on the first frequency point by the UE is received and judging whether the UE is allowed to access the UTRAN or not and sequential operation are performed again, until the rejection frequency is above the preset frequency or the UE is judged to be allowed to access the UTRAN. According to the network redirection method and device, the ping-pong effect in the time of redirection is avoided by modifying the value of the identification code.

Description

technical field [0001] The invention relates to communication technology, in particular to a network redirection method and device. Background technique [0002] In R8-based redirection, the user equipment (User Equipment, referred to as UE) sends a radio resource control (Radio Resource Control, referred to as RRC) connection request to the universal terrestrial radio access network (Universal Terrestrial Radio Access Network, referred to as UTRAN) to apply for Establish an RRC connection with the UTRAN network to ensure the continuous operation of the business. [0003] In practical applications, due to the congestion of the UTRAN network load or the admission policy, the access device in the UTRAN may refuse the UE to access the UTRAN. In the redirection of R8, the RRC connection request carries the pre-redirection information element "Pre-Redirection info", and the value of the information element of "Pre-Redirection info" carried in the RRC connection request is "True"...

AI Technical Summary

Problems solved by technology

[0004] However, after the UE returns to the E-UTRAN, it will try to redirect to the UTRAN for the same reason, and the UTRAN may reject the access of the UE again, causing the UE to redirect to the E-UTRAN again.

This repeated redirection process between UTRAN and E-UTRAN is called the ping-pong effect in the redirection process, which often causes service interruption, and brings a large load to the network, wasting network resources

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