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A data forwarding method and device

A forwarding method and data technology, applied in the field of communication, can solve problems such as UE communication interruption, achieve the effect of reducing communication interruption and avoiding data loss

Active Publication Date: 2015-09-23
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention provides a data forwarding method and equipment to solve the problem of the risk of communication interruption when the UE performs handover in the existing layered network

Method used

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  • A data forwarding method and device
  • A data forwarding method and device

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Experimental program
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no. 1 Embodiment

[0078] The first specific embodiment, as attached Figure 12 shown, for the attached Figure 4 In the shown network architecture where the control plane and the user plane are separated, the specific process of UE switching from the local base station under the control of the source macro base station to the target base station is as follows:

[0079] Step 1201: The source macro base station configures the UE with measurement configuration information for the UE to perform measurement according to the measurement configuration information, and the UE reports the measurement result to the source eNB, and the measurement result is used to assist the source eNB in ​​handover decision (Handover Desis).

[0080] Step 1202: The source macro base station makes a handover decision.

[0081] Step 1203: After the source macro base station decides to perform handover, it sends a handover request message (Handover Request) to the target eNB, and the message includes handover preparation ...

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Abstract

Disclosed are a data forwarding method and device, used for solving the problem that a communication interruption risk is generated when a user equipment (UE) is handed over in an existing hierarchical network. The method comprises: a source macro base station obtaining serial number sending state information of PDCP data packets, in uplink and downlink directions, of a local base station currently accessed by a UE, a control plane of the UE being connected to the source macro base station, and a user plane being connected to the local base station; and the source macro base station sending the serial number sending state information to a target base station that the UE is to be handed over to, and the target base station establishing a user plane connection to the UE according to the serial number sending state information.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a data forwarding method and device. Background technique [0002] The network architecture of E-UTRAN (Evolved Universal Terrestrial Radio Access Network, Evolved Universal Terrestrial Radio Access Network) is as follows: figure 1 As shown, E-UTRAN is composed of eNB (evolved base station). There is an X2-C interface (control plane interface) between adjacent eNBs. When the UE is handed over, the source eNB and the target eNB may also establish an X2-U interface (user plane interface) for the UE for data forwarding. [0003] The MME (Mobility Management Entity, Mobility Management Entity) is connected to the eNB through the S1-MME interface; the eNB completes the access network function and communicates with the UE (User Equipment) through the air interface. For each UE attached to the network, there is an MME providing services for it, and the MME is called the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/04
CPCH04W36/0055H04W36/0016H04W36/04H04L47/34H04W36/0069H04W36/0064
Inventor 杨义张大钧鲍炜
Owner DATANG MOBILE COMM EQUIP CO LTD
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