ENB handover method in heterogeneous network and eNB

A technology of base station switching and heterogeneous network, applied in wireless communication, electrical components, etc., can solve the problems of overall network service performance degradation and limited data throughput, reduce control plane signaling, improve performance and throughput, The effect of reducing the likelihood of interruptions

Inactive Publication Date: 2016-10-05
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This means that the wireless resources that the network can provide to the UE are vacant, that is, the data throughput that the UE can originally improve is limited for some reason, and the overall service performance of the network is also reduced.

Method used

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  • ENB handover method in heterogeneous network and eNB
  • ENB handover method in heterogeneous network and eNB
  • ENB handover method in heterogeneous network and eNB

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Experimental program
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specific Embodiment 1

[0085] The system architecture and scenarios are the same as those described above, and the user plane architecture applies mode 1. In the preparation stage of the handover procedure between base stations, the target base station also needs to judge the connection between the UE and the second base station while judging whether to allow the UE to access. For example, the resources corresponding to the offload bearer need to be reconfigured. Compared with the prior art, the link reconfiguration between the UE and the second base station in this embodiment is non-handover type, random access may not be required, and data transmission resumes faster. The specific process is as Figure 4 shown, including the following steps:

[0086] Step 1001: The first base station makes a handover decision according to the message 101 (measurement report) of the UE (or the results obtained by other radio resource management functions, such as overloading), such as deciding to handover the prim...

specific Embodiment 2

[0102] The system architecture and scenarios are the same as those described above, and the user plane architecture application mode 2. In the preparation stage of the handover procedure between base stations, while judging whether to allow UE access, the target base station also needs to judge the connection between the UE and the second base station, for example, resources corresponding to the offload bearer remain unchanged. The specific process is as Figure 5 shown, including the following steps:

[0103] Steps 2001 to 2002 are the same as steps 1001 to 1002 in the first embodiment.

[0104] Step 2003: When the judgment result obtained by the target base station is to continue to use the resources of the second base station and keep the configuration unchanged, the target base station sends a message 203 to the second base station;

[0105] The function of the message 203 is to request to establish, with the second base station, a cooperative interface between a control...

specific Embodiment 3

[0132] Specific embodiment three: the system architecture and scenarios are the same as those described in the specific implementation mode and background technology, and the user plane architecture application mode 2. When the serving cell accessed by the UE at the first base station needs to be handed over (if the UE is configured with carrier aggregation at the first base station, then this embodiment is based on the scenario that the UE is in the primary cell (PCell) of the first base station ) handover), the first base station needs to perform mobility reconfiguration on the UE, which is called a case of intra-base station handover in this embodiment. In the handover decision, the first base station needs to judge the connection status and resource configuration between the UE and the second base station. The specific process is as Figure 6 shown, including the following steps:

[0133] Step 3001: According to the measurement report of the UE or the variable value of a...

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Abstract

The invention provides an eNB handover method in a heterogeneous network and an eNB. The method comprises: after a target eNB receives a handover request message from a first eNB, access control is executed; whether connection to a second eNB by UE is kept after the access of the UE is determined; if so, an assisting request message is sent to the second eNB and thus the second eNB is requested to assist the target eNB in providing a dual-connection service for the UE; and after a reply message from the second eNB is obtained, a handover request confirmation message is returned to the first eNB. According to the invention, when a main service eNB of the UE carries out switch, performances of the link between the UE and the second eNB can be improved; the state of the link between the UE and the connected second eNB can be determined; the possibility of interruption can be reduced or rapid restoration from the interruption can be realized; the performance and throughput capacity for data transmission by the UE can be improved effectively; the using efficiency of wireless resources is enhanced; and the control plane signaling is reduced.

Description

technical field [0001] The present invention relates to a mobile communication system, in particular to a base station handover method and a base station in a mobile communication system deployed by a heterogeneous network. Background technique [0002] The Third Generation Partnership Projects (3GPP) believes that the deployment and capabilities of small cells (cells established by low-power base stations, which are different from MacroCells established by macro base stations, small cells are usually called Small Cells) Aspect enhancement is one of the most interesting topics in the development of future communication networks. At present, a heterogeneous network deployment scenario generally recognized by the communication industry is to deploy low-power nodes within the coverage area or at the border of the macro base station, and the two together form an Evolved Universal Terrestrial Radio Access Network (Evolved Universal Terrestrial Radio Access Network, The radio acc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/08
CPCH04W36/08H04W36/0069H04W36/0058H04W36/0016H04W88/02H04W88/08H04W92/20
Inventor 王昕
Owner ZTE CORP
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