Method for realizing reconfiguration in dual connectivity, main serving base station and auxiliary serving base station

A reconfiguration, dual-connection technology, applied in the field of mobile communications, can solve the problems of reduced user throughput and small coverage, and achieve the effect of reducing waste, ensuring user experience, and avoiding a sharp drop in data throughput.

Active Publication Date: 2022-05-13
ZTE CORP
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  • Application Information

AI Technical Summary

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 data than the MeNB. Therefore, even if the UE is temporarily disconnected from the SeNB, it will still cause a sharp drop in user throughput. decline

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  • Method for realizing reconfiguration in dual connectivity, main serving base station and auxiliary serving base station
  • Method for realizing reconfiguration in dual connectivity, main serving base station and auxiliary serving base station
  • Method for realizing reconfiguration in dual connectivity, main serving base station and auxiliary serving base station

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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 connection, a primary serving base station and a secondary serving base station. In the process of transferring the UE's user plane bearer from the source SeNB to the target SeNB under the same MeNB, the source SeNB and the target SeNB are established. User plane interfaces between SeNBs that provide uplink data services and downlink data services for UEs; during the reconfiguration process, the target SeNB forwards the uplink RLC data PDUs to the source SeNB, and the source SeNB offloads the downlink PDCP data PDUs to the target SeNB and keeps the same UE data transmission until reconfiguration is successful. In the process of establishing a connection with the target SeNB, the UE establishes a user plane interface between the source SeNB and the target SeNB that provides uplink / downlink data services for the UE, thereby solving the problem that when the UE performs uplink and downlink synchronization with the target SeNB and establishes a connection, The problem of not being able to transmit data with the network side at the micro base station or low-power node level avoids a sharp drop in user plane data throughput and ensures UE user experience during user plane reconfiguration.

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 the mobility management entity (MME, Mobility ManagementEntity) 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, ...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): H04W76/15H04W76/19
CPCH04W76/15H04W76/10Y02D30/70
Inventor刘星施小娟黄河
OwnerZTE CORP