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Method and device for data forwarding

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

Active Publication Date: 2012-12-19
DATANG MOBILE COMM EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
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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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  • Method and device for data forwarding

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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

The invention discloses a method and a device for data forwarding and aims at solving the problem of communication outrage risk when UE (user equipment) is switched in an existing hierarchical network. The method includes: a source macro base station obtains serial number sending state information of uplink and downlink PDCP (packet data convergence protocol) data packet of a local base station currently accessed by the UE, wherein a control plane of the UE is connected with the macro base station, and a user plane is connected to the local base station; and the macro base station sends the serial number sending state information to a target base station of the UE to be switched, and the target base station establishes connection with the user plane of the UE according to serial number sending state data.

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