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Wireless lan apparatus

A device, wireless technology, applied in wireless communication, network topology, data exchange network, etc., can solve problems such as hardware increase and excessive buffer size

Inactive Publication Date: 2004-09-01
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This requires an excessively large buffer size, creating another problem of increased hardware

Method used

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  • Wireless lan apparatus
  • Wireless lan apparatus
  • Wireless lan apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0223] figure 1 is a block diagram showing the configuration of the wireless LAN device according to the first embodiment of the present invention. Apart from Figure 34 The wireless LAN device according to the present embodiment further includes a packet length control unit 0120 in addition to the structure of the conventional device shown. Packet length control unit 0120 inputs packet length control signal 0121 thereto to create packet length control signal 0122 , and outputs created packet length control signal 0122 to packet synthesis unit 0102 and frame synthesis unit 0107 . Furthermore, the wireless LAN device according to the present embodiment is configured in such a manner as to input the transmission rate control signal 0123 to the wireless transmitting unit 0109. The packet length control unit 0120, the packet composition unit 0102, the frame composition unit 0107 and the wireless transmission unit 0109 serve as the transmission side structure of the device.

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no. 2 example

[0233] The first embodiment is capable of adjusting the packet length in response to different transmission rates without allowing the packet length to respond to the input speed of the transmission data. When the packet length information is determined once and the input of transmission data temporarily slows down, it takes a long time until the amount of input transmission data coincides with the packet length information. That is, a large delay before transmission is caused, and it is not suitable for real-time data communication. The second embodiment serves to eliminate this inconvenience.

[0234] image 3 is a block diagram showing the configuration of the wireless LAN device according to the second embodiment of the present invention. In this embodiment, a small modification is made to the structure of the packet length control unit 0120 of the first embodiment, which is the structure of the transmission side of the device. image 3 It also includes the internal str...

no. 3 example

[0255] Figure 5 is a block diagram showing the configuration of a wireless LAN device according to a third embodiment of the present invention. In this embodiment, in addition to the structure of the first embodiment, the device further includes: a data rate detection unit 0501 as a transmission side structure, and the packet length control unit 0120 includes a packet length rate control means 0503 .

[0256] Data rate detection unit 0501 periodically measures the transmission rate of transmission data 0101 being input to packet synthesis unit 0102, and calculates how much transmission data 0101 is input within a periodic time frame, thereby outputting data rate detection signal 0502.

[0257] The packet length information from the packet length register 0124 and the data rate detection signal 0502 from the data rate detection unit 0501 are input to the packet length rate control unit 0503 additionally included in the packet length control unit 0120 . The packet length rate ...

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Abstract

A packet synthesizing unit packetizes transmit data and thereby creates a transmit packet data, and more specifically, synthesizes the number of the transmit data indicated by a packet-length information from a packet length controlling unit into a transmit packet data. A frame synthesizing unit appends the packet-length information for transmission to a header of the transmit packet data to thereby create a transmit frame. A wireless transmit unit converts the transmit frame into a wireless transmit signal and wirelessly transmits the wireless transmit signal. In the wireless transmission, the packet length controlling unit controls the packet length of the transmit data according to a transmit rate in the wireless transmit unit. The packet length controlling unit reduces the packet length when the transmit rate is relatively high and extends the packet length when the transmit rate is relatively low. This improves the transmission efficiency and communication quality.

Description

technical field [0001] The present invention relates to a wireless LAN (Local Area Network) device for wireless data transmission. Background technique [0002] In recent years, in response to the increasing speed in wireless data transmission, devices utilizing wireless LANs have been realized for practical use as devices capable of ensuring high-speed and stable transmission of image data and the like. [0003] A conventional wireless LAN device will be described below. Figure 34 is a block diagram showing the structure of a conventional wireless LAN device, which is disclosed in Unexamined Patent Application Publication No. H11-239155. In the figure, numeral 0101 denotes transmission data, which is input into a packet synthesis unit 0102 . Packet combining unit 0102 sends transmission data 0101 to buffer 0103 together with buffer write signal 0104 . A specific amount of data in the buffer 0103 is read by a buffer read signal 0105 and sent to the packet combining unit 0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/00H04B7/26H04L1/00H04L1/18H04L1/20H04L12/28H04L29/08H04W28/06H04W84/12
CPCH04L1/1809H04L1/0054H04L1/0025H04W28/06H04L1/0007H04L1/0002H04W84/12H04L1/20
Inventor 长尾彰文河田友春石井宏明和田惠一朗
Owner PANASONIC CORP