Secondary base station handover method, device and base station

Abstract

A secondary base station handover method, device, and base station, the method comprising: receiving a user equipment measurement report for at least one frequency, the user equipment is in a dual connectivity state, and the system corresponding to the at least one frequency is different from the system to which the primary base station belongs ; Decide whether to switch the secondary base station according to the measurement report of the at least one frequency. Adopting the technical solution of the present invention can optimize the handover of the secondary base station in the dual connection state established by the base stations of different systems, and improve the data transmission efficiency.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular to a secondary base station handover method, device and base station. Background technique [0002] For a user equipment (User Equipment, UE) in a connected state, if there is a service requirement, the base station may configure carrier aggregation for the UE. In carrier aggregation, UE can simultaneously use resources of multiple component carriers to achieve high data transmission rate. Usually, component carriers implementing carrier aggregation are all located in the same base station. [0003] In a Long Term Evolution (LTE) system, dual connectivity (Dual Connectivity) is introduced. figure 1 It is a schematic diagram of a dual connection usage scenario in the prior art. Such as figure 1 As shown, the UE can simultaneously use the time-frequency resources of the base station eNB1 and the base station eNB2 for data transmission, which can not only impro...

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Problems solved by technology

[0005] However, the movement of the UE may cause the UE to move from the current NR cell to an adjacent NR cell. If the primary base station of LTE is still required to determine whether to switch the secondary base station, the primary base station needs to be able to obtain the load information of the target NR cell, cell interference information, etc. In order to make a reasonable decision, however, because LTE and NR belong to different systems, the primary base station of LTE cannot well understand the load information and interference information of the NR side cell, which affects the handover of the secondary base station, which in turn affects the communication between UE and base station. data transmission efficiency

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