Method for realizing reconfiguration in dual connectivity, master eNB, and secondary eNB

A reconfiguration, dual-connection technology, applied in the field of mobile communications, which can solve the problems of small coverage and reduced user throughput.

Active Publication Date: 2017-07-11
ZTE CORP
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Problems solved by technology

Since the micro base station or low-power node is closer to the UE and has a smaller coverage area, the SeNB will carry more user plane offload dat

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  • Method for realizing reconfiguration in dual connectivity, master eNB, and secondary eNB
  • Method for realizing reconfiguration in dual connectivity, master eNB, and secondary eNB
  • Method for realizing reconfiguration in dual connectivity, master eNB, and secondary eNB

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Embodiment Construction

[0082] In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0083] In the related technology of the dual-connection 1A architecture, the user plane bearer of the UE is transferred from the source SeNB to the target SeNB under the same MeNB. Although the MeNB performs the process of first adding the target SeNB and then deleting the source SeNB, the actual UE needs Disconnect from the source SeNB first, and then establish a connection with the target SeNB. Therefore, there will also be a problem of sharp drop in user throughput caused by the short-term disconnection of the UE from the SeNB.

[0084] However, in the technical solution p...

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Abstract

The invention discloses a method for realizing reconfiguration in dual connectivity, a master eNB (MeNB), and a secondary eNB (SeNB). In a process of transferring a user plane bearer of UE to a target SeNB of the same MeNB from a source SeNB, a user plane interface for providing uplink data service and downlink data service is established between the source SeNB and the target SeNB; and in a reconfiguration process, the target SeNB forwards an uplink RLC data PDU to the source SeNB, and the source SeNB distributes a downlink PDCP data PDU to the target SeNB and maintains data transmission with the UE until the reconfiguration is successful. In a process of establishing the connection with the target SeNB by the UE, the user plane interface for providing uplink/downlink data service for the UE is established between the source SeNB and the target SeNB so that the problem that when the UE performs uplink and downlink synchronization with the target SeNB and establishes connection, the UE fails to perform data transmission with a network side at the layer of a micro base station or a low-power node is solved, rapid reduction of the data throughput of the user plane is avoided, and the user experience of the UE during reconfiguration of the user plane is guaranteed.

Description

technical field [0001] The invention relates to mobile communication technology, in particular to a method for realizing reconfiguration in dual connection, a main serving base station and an auxiliary serving base station. Background technique [0002] figure 1 It is a schematic diagram of a network architecture of dual connectivity (DC, Dual connectivity) in related technologies, such as figure 1 As shown, for each user equipment (UE, User equipment), on the control plane, the main serving base station (MeNB, Master eNB) such as a macro base station node is connected to a mobility management entity (MME, Mobility Management Entity) through S1-MME ), the MeNB and a secondary serving base station (SeNB, Secondary eNB) such as a micro base station or a low-power node are connected through an X2-C. On the user plane, for the master cell group bearer (MCG bearer, Master cell group bearer), the MeNB is connected to the serving gateway (S-GW, Serving Gateway) through the S1-U, ...

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Application Information

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IPC IPC(8): H04W76/02
CPCH04W76/15H04W76/10Y02D30/70
Inventor 刘星施小娟黄河
Owner ZTE CORP
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