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Method and device of flow control for reducing RLC (Radio Link Control) layer data retransmission

A technology of wireless link control and layer data, applied in wireless communication, network traffic/resource management, electrical components, etc., can solve problems such as performance degradation and out-of-sequence, and achieve rough flow control, reduce data retransmission, and reduce The effect of the RLC layer out-of-order problem

Inactive Publication Date: 2016-07-06
ZTE CORP
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  • Application Information

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Problems solved by technology

However, this flow control algorithm is too extensive and may barely meet the current point-to-point transmission requirements from NodeB to UE. However, in the R11 protocol and subsequent evolution technologies, multiple NodeBs may send data to the same UE at the same time. At this time, if the extensive flow control is still used, the RLC (RadioLinkControl, radio link control) layer may be disordered due to the excessive accumulation of NodeB data, which will eventually cause performance degradation.

Method used

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  • Method and device of flow control for reducing RLC (Radio Link Control) layer data retransmission
  • Method and device of flow control for reducing RLC (Radio Link Control) layer data retransmission
  • Method and device of flow control for reducing RLC (Radio Link Control) layer data retransmission

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Embodiment Construction

[0036] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described below are only used to illustrate and explain the present invention, and are not intended to limit the present invention

[0037] figure 1 Shown is a schematic diagram of the method of the present invention, the method includes the following steps: first, judge the time period in which the UE downlink service data buffer average time; secondly, according to the time period, adjust the flow control according to predetermined rules.

[0038] figure 2 It is a schematic flow diagram of an embodiment of the present invention: as shown in the figure,

[0039] S201: Continuously record the data packets sent to the UE at the NodeB and calculate the air interface rate Vuu within a predetermined time;

[0040] S202: The base station keeps recording the average time of data caching, and ...

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Abstract

The present invention discloses a method and device of flow control for reducing RLC (Radio Link Control) layer data retransmission. The method comprises: determining the time period of downlink business data buffer memory average time Tdelay of UE, and regulating flow control according to a presetting rule according to the time period. Prior to the time period of the Tdelay of the UE, the method also comprises: setting a plurality of time periods in advance according to the downlink data business performance, and recording the Tdelay. Besides, the present invention further discloses a device of flow control for reducing RLC layer data retransmission. The method and device of flow control for reducing RLC (Radio Link Control) layer data retransmission are able to reduce unnecessary data retransmission, greatly reduce the number of occurrence of the RLC layer out-of-order problem, improve the download performance and greatly lift the user experience.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a flow control method and device for reducing data retransmission at a Radio Link Control (RLC) layer. Background technique [0002] In the 3GPP (the3rdGenerationPartnerProject, third-generation partnership project) agreement, RNC (RadioNetworkController, radio network controller) periodically sends UE (UserEquipment, user equipment) capability request frame to NodeB (base station) through a fixed frame format, NodeB After receiving the capability request frame, it will immediately return a fixed-format capability allocation frame. Through the capability allocation frame, the RNC will know how much data needs to be sent to the UE within a certain period of time. The size of the capacity allocation frame sent to the RNC, that is, the size of the flow control, determines the download performance of the UE in the current wireless environment. At the same time, since the bandwid...

Claims

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Application Information

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IPC IPC(8): H04W28/10
CPCH04W28/10
Inventor 刘志斌刘银磊李军
Owner ZTE CORP
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