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Method, system and device for transmitting data in process of switching access points

A technology for access point switching and data transmission, applied in electrical components, wireless communication, etc., can solve problems such as increasing data plane interruption delay, achieve the effects of reducing interruption delay, improving switching efficiency, and shortening data transmission time

Active Publication Date: 2014-01-15
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 embodiments of the present invention provide a method, system, and device for transmitting data during access point switching, which are used to solve the problem in the prior art that data planes will be increased during access point switching in the case of heterogeneous networks Interrupt delay problem

Method used

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  • Method, system and device for transmitting data in process of switching access points
  • Method, system and device for transmitting data in process of switching access points
  • Method, system and device for transmitting data in process of switching access points

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0142] Step 1: After receiving the RRC connection reconfiguration message from the Macro eNB, the UE judges that this is a DRB reconfiguration process (that is, reconfiguring the DRB to the Local eNB) according to the parameters in the message;

[0143] Step 2: UE still uses the old DRB link to receive and send PDCP PDU;

[0144] Step 3: UE configures the RLC, MAC and PHY layers of the new DRB;

[0145] Step 4: UE starts downlink synchronization operation for the new Local eNB;

[0146] Step 5: If the uplink is configured, the UE initiates an uplink synchronization operation for the new Local eNB;

[0147] Step 6: After receiving the Rach response message from the Local eNB, the UE starts to organize and send the RRC reconfiguration complete message;

[0148] Step 6a: UE starts to allow to receive the downlink data of the new DRB;

[0149] Step 7: After the Macro eNB receives the RRC reconfiguration complete message, it will organize to send the ACK feedback of the RLC laye...

example 2

[0154] Steps 1 to 4 are the same as steps 1 to 4 in Example 1;

[0155] Step 5: After receiving the proprietary preamble information, the new Local eNB responds to the Rach response message and begins to allow the uplink data of the new DRB to be received;

[0156] Step 6: After receiving the Rach response message from the Local eNB, the UE starts to organize and send the RRC reconfiguration complete message, simultaneously receives and sends data on the new DRB, and stops sending data on the old DRB link;

[0157] Step 7: After the Macro eNB receives the RRC reconfiguration complete message, it will organize to send the ACK feedback of the RLC layer, and notify the Local eNB to start sending data on the new DRB, and at the same time terminate the old DRB link to send data;

[0158] Step 8: The UE receives the HARQ ACK feedback of the RRC reconfiguration complete message or the RLC ACK of the RRC reconfiguration complete message.

[0159] Step 9: When the UE receives the firs...

example 3

[0162] Steps 1 to 6: Same as steps 1 to 6 in Example 1

[0163] Step 6a: The UE starts to allow data transmission and reception on the new DRB, and at the same time, the UE deletes the old DRB link;

[0164] Step 7: After receiving the RRC reconfiguration complete message, the Macro eNB will organize to send the ACK feedback of the RLC layer, delete the old DRB link at the same time, and notify the Local eNB to send and receive data on the new DRB.

[0165] Scenario 2: UE is connected to Macro eNB and local eNB at the same time (SRB is in Macro, DRB is in local). For the case of Local eNB to Macro eNB, two examples are listed.

[0166] Example one,

[0167] Step 1: After receiving the RRC connection reconfiguration message from the Macro eNB, the UE judges that this is a DRB reconfiguration process (that is, reconfiguring the DRB to the Macro eNB) according to the parameters in the message;

[0168] Step 2: UE still uses the old DRB link to receive and send PDCP PDU;

[01...

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Abstract

The embodiment of the invention relates to the technical field of wireless communication, in particular to a method, system and device for transmitting data in the process of switching access points. The method, system and device for transmitting data are used for solving the problem in the prior art that under the condition of a heterogeneous network, and when the access points are switched, interruption and time delay of a data surface can be increased. The method of the embodiment comprises that a user device determines that all or part of a DRB is reshuffled from one cell to another cell under the condition that RRC connection is not changed, in the process that access point switching is conducted by the user device, data are transmitted through an original data radio bearer, wherein the original data radio bearer is used in the end before access point switching of the data surface. Due to the fact that in the process that access point switching is conducted by the user device, the data are transmitted through the original data radio bearer, so that the interruption and time delay of the data surface when the access points are switched under the condition of the heterogeneous network is reduced, and switching efficiency is further improved, and data transmission time is shortened.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method, system and equipment for transmitting data during access point switching. Background technique [0002] With the deployment of femtocells and micro cells, the traditional homogeneous network with only macro cells will gradually evolve into a heterogeneous network (hetnet) where multiple types of cells coexist. In the case of heterogeneous networks, mobility-related performance (such as handover, RLF (Radio Link Failure, radio link failure), etc.) needs to be further improved. In order to improve mobility performance, a new architecture needs to be introduced, that is, the control plane and the user plane Separation technology. [0003] During the X2 handover process, the source eNB (evolved base station) decides to execute the X2 handover operation according to the measurement results, and the source eNB sends a handover request message to the ta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/08
CPCH04W36/04
Inventor 张大钧杨义梁靖鲍炜许芳丽
Owner DATANG MOBILE COMM EQUIP CO LTD
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