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Flow control method for packet data units in high-speed downlink link packet access network

A packet data unit, downlink technology, applied in the direction of network traffic/resource management, data exchange network, electrical components, etc.

Inactive Publication Date: 2010-08-25
POTEVIO INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, there is currently no flow control method to support the PDU flow control function of the Iub interface in the system using HSDPA technology

Method used

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  • Flow control method for packet data units in high-speed downlink link packet access network
  • Flow control method for packet data units in high-speed downlink link packet access network
  • Flow control method for packet data units in high-speed downlink link packet access network

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Embodiment Construction

[0038] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail by giving specific embodiments and referring to the accompanying drawings.

[0039]In order to implement flow control on the PDU transmitted between RNC and NodeB in the system that adopts HSDPA technology, thereby neither causing congestion of PDU nor causing waste of data channel resources via Iub interface between RNC and NodeB, The method provided by the present invention controls the transmission rate of the PDU sent by the RNC through the Iub interface according to the data volume of the currently cached PDU in the NodeB cache area and the transmission rate of the downlink transmission PDU of the Uu interface between the NodeB and the UE.

[0040] Fig. 2 is the flow control method flowchart of PDU in the HSDPA network of the present invention, and its concrete steps are:

[0041] In step 200, the NodeB sends ...

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Abstract

A flow control method of packet data units (PDU) in a high-speed downlink packet access (HSDPA) network includes three steps. Firstly, while buffering a PDU received from a radio network controller (RNC), a node (Node B) sends the buffered PDU to the user equipment (UE); secondly, the Node B judges the buffered data quantity, if the data quantity reaches the set upper limit data quantity, then the Node B notifies the RNC to lower the transmission rate of PDUs, and if the data quantity reaches the set lower limit data quantity, then the Node B notifies the RNC to raise the transmission rate ofPDUs; finally, according to the notification, the RNC adjusts the transmission rate of PDUs and sends PDUs to the Node B according to the transmission rate. The upper and lower limit data quantities not only can be derived according to the transmission rate and jitter of a Un interface between the Node B and the UE and the feedback delay of an Iub interface between the Node B and the RNC but alsocan be directly configured by the system according to specific conditions.

Description

technical field [0001] The invention relates to the technology of transmitting packet data unit (PDU) in a high-speed downlink packet access (HSDPA) network, in particular to a flow control method of the PDU in the HSDPA network. Background technique [0002] The structure of a radio access network (RAN, Radio Access Network) is shown in FIG. 1 , and the RAN includes one or several radio network subsystems (RNS). An RNS consists of a Radio Network Controller (RNC) and one or more Node Bs (NodeB). The interface between the RNC and the CN is the Iu interface, and the NodeB and the RNC are connected through the Iub interface. Inside the RAN, the RNCs are interconnected through the Iur interface, and are used to allocate and control the wireless resources of the NodeBs connected or related to them. The NodeB transmits the data packets transmitted from the Iub interface to the user equipment (UE) through the Uu interface or transmits the data packets transmitted from the Uu int...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04J13/02H04W28/10
Inventor 伍振兴
Owner POTEVIO INFORMATION TECH CO LTD
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