Method for transmitting UE wireless capacity information in switching process and device

Abstract

The invention provides a method for transmitting UE wireless capacity information in a switching process, comprising the following steps: in the switching process, a target base station transmits thewireless capacity information of a user terminal to a target mobility management entity in a way that the information is piggybacked in mutual information; after the target mobility management entityreceives the mutual information transmitted from the target base station, the wireless capacity information of the user terminal stored. The invention further provides a device for transmitting UE wireless capacity information in a switching process; by adopting the method and the device, in the switching process, the UE wireless capacity information is transmitted to the target MME to be stored in a way that the information is piggybacked in mutual information, so as to reduce signaling interaction of an S1 interface and realize simply.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular to a method and a device for transmitting UE wireless capability information during handover. Background technique [0002] With the development of mobile communication technology, currently in the LTE (Long Term Evolution, Long Term Evolution) system, UE capability information is divided into UE radio capability (UE radio capability) and UE network capability; wherein, UE network capability information includes UE Regarding the support capability of the security algorithm, etc., the wireless capability information of the UE includes the power level and frequency bandwidth supported by the terminal. [0003] Under normal circumstances, the eNB obtains the UE wireless capability parameters from the UE through the air interface, such as figure 1 As shown, but in order to reduce the air interface interaction, the eNB needs to transfer the wireless capability infor...

AI Technical Summary

Problems solved by technology

[0005] However, the air interface capability information is not exchanged between the core networks. Therefore, when the S1 interface is switched, the MME connected to the UE has changed, and the UE wireless capability information is not transmitted between the core networks. Therefore, the context of the target MME does not save the UE. capability information; and since the source base station has transparently transmitted the wireless capability information to the target base station, the target base station needs to pass this information to the target MME through the S1 interface for storage; and the method in the existing protocol is to receive the wireless capability information when the target eNB After receiving the wireless capability information of the UE, send specific information through the S1 interface to transfer the wireless capability information of the UE to the target MME for storage; however, this will cause multiple interactions of signaling on the S1 interface, which increases the burden on the interface

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