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Data retransmission control method for mobile communication system

A technology for data and control information, applied in the field of data forwarding control, which can solve the problems of time delay, loss of transmitted data, waste of wireless resources and interruption of data forwarding services.

Inactive Publication Date: 2004-05-12
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

According to this method, if all the data in the receive buffer (Rx window) cannot be arranged in sequence before receiving the next data from the transmit RLC, a time delay occurs in transmitting the transmit data of the upper layer protocol
This time delay will cause the loss of sent data, thereby wasting wireless resources and interrupting data forwarding services

Method used

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  • Data retransmission control method for mobile communication system
  • Data retransmission control method for mobile communication system
  • Data retransmission control method for mobile communication system

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Embodiment Construction

[0063] Reference will now be made in more detail to preferred embodiments of the invention, examples of which are illustrated in the accompanying drawings.

[0064] Usually, in the current technical specification of IMT-2000 RLC (25.322 V3.14.0), only the structure and other definitions applicable to the window size SUF1 (Super Field) are discussed, but the use of SUF1 in an appropriate environment is not discussed Therefore, there are many problems in the implementation.

[0065] Therefore, the present invention proposes a method of controlling the window size based on the latest received data and then transmitting PDUs by appropriately using SUF1. Also, the present invention proposes to apply the steps of repeatedly sending the ACK signal and properly control the window according to the limitation of the buffer.

[0066] Hereinafter, preferred embodiments of the present invention will be explained with reference to the drawings.

[0067] Figure 5 The signal flow between ...

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Abstract

A data transfer controlling method in a mobile communication system, in which a window size SUFI (super-field) is controlled and thus a receiving buffer for a transfer of next data is controlled, thereby preventing a damage such as a data loss. For a reception of a protocol data unit (PDU) of a radio link control (RLC) layer, the window size SUFI and the receiving buffer are properly controlled, thereby preventing a data loss according to a buffer overflow, a time delay, and a waste of a radio resource. Also, the present invention can provide affirmative effects on the 3GPP communication standard by disclosing a positive utilization method of the window size SUFI only of which form has been defined.

Description

technical field [0001] The invention relates to a mobile communication system, in particular to a data forwarding control method using a radio link control (RLC) layer. Background technique [0002] In general, Internet services based on wire networks have developed into a representative data communication system for various applications, and cellular mobile communication network technology has become a conventional audio communication device. According to this situation, users want to be able to provide data forwarding services such as moving images, etc., to be able to use portable and cable-free wireless terminals more conveniently, and to expect the same quality in the wireless network as that in the existing wired network or Can outperform the quality found in existing wired networks. To achieve this, IMT-200, the next generation mobile communication service that has been developed, will provide faster wireless packet data services. However, the services of existing I...

Claims

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Application Information

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IPC IPC(8): H04L1/16H04L1/18H04L12/56
CPCH04L1/1874H04L1/1835H04W28/18H04W28/14H04L1/1671H04L47/27H04L49/9005
Inventor 张星景
Owner LG ELECTRONICS INC
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