Method for controlling radio link control layer buffer area overflow

A wireless link control and buffer overflow technology, applied in the field of communication, can solve the problems of reducing RLC throughput, no data to send at the RLC layer, and SDU discard timer overtime, etc., to achieve the effect of shortening the delay and improving the response speed

Active Publication Date: 2006-08-02
XFUSION DIGITAL TECH CO LTD
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Problems solved by technology

[0013] Therefore, as can be seen from the above-mentioned disclosed methods, the disadvantages are: due to the TCP slow start effect, multiple TCP packets will arrive at the buffer of the RLC layer at the same time, so the timers of these SDUs will start at the same time
Due to the in-order transmission mechanism of

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  • Method for controlling radio link control layer buffer area overflow
  • Method for controlling radio link control layer buffer area overflow
  • Method for controlling radio link control layer buffer area overflow

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Embodiment Construction

[0046] The present invention is applicable to a communication transmission system using an air interface protocol, such as a Universal Mobile Telecommunications System (UMTS, Universal Mobile Telecommunications System). The architecture of the air interface protocol is mainly divided into three layers, the lowest layer is the physical layer (PHY) L1, the data link layer L2 is positioned above the physical layer, and the network layer is positioned above the data link layer L3. Vertically, a protocol system is divided into a control plane for sending control signals (signaling) and a user plane for sending data information.

[0047] The data link layer is divided into several sublayers. From the perspective of the control plane, it includes the medium access control layer (MAC) and the radio link control layer (RLC). From the perspective of the user plane, it also includes the packet processing layer Data Protocol Convergence Sublayer (PDCP) and Broadcast / Multicast Control Sub...

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Abstract

This invention relates to a kind of controlling method for overflow of the wireless link controlling layer buffer area. It concludes: A, RLC buffer area threshold value is preset. The value of Bo is initialized to 0; B, RLC pre-sectors the received SDU and calculates current Bo value according to the consequence; C, if the Bo of RLC is smaller than the threshold value of buffer area, RLC functional process will be undertaken. MAC functional process will be undertaken afterwards; if the Bo of RLC is not smaller than the threshold value of buffer area, SDU will be deleted. Bo value is renewed. MAC functional process is undertaken too. This invention also relates to another kind of controlling method, which is different from the above method at the following points: the received SDU is not pre-sectored. RLC functional process is undertaken directly; the first PDU, which has not SDU transmitting labeled, is researched. All PDU of the SDU are deleted. The other steps are the same as above method.

Description

technical field [0001] The invention relates to the field of communications, in particular to a method for controlling buffer overflow of a radio link control layer Background technique [0002] With the development of communication technology, especially the development of 3G technology, data service will become one of the important business of mobile communication system. This wireless data service will provide end users with a seamless connection to the Internet, allowing users to obtain more convenient information through the wireless system. And the existing Internet network mainly through TCP / IP to carry on the network and complete the data transmission. [0003] The Transmission Control Protocol (TCP, Transmit Control Protocol) is a reliable transmission technology, and the transmission performance of the Transmission Control Protocol TCP in the existing wired network is guaranteed by adopting methods such as slow start, congestion avoidance and fast recovery. The i...

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Application Information

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IPC IPC(8): H04L1/18H04L29/06
Inventor 童颖王成毅许佰魁
Owner XFUSION DIGITAL TECH CO LTD
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