Radio communication system, radio communication device, radio communication method, and computer program

A wireless communication system and wireless communication equipment technology, applied in the field of wireless communication systems, can solve the problems of redundancy, MAC address cannot be scrambled, and cannot be converted into random bit sequences, etc., to achieve the goal of improving data transmission efficiency and high tolerance Effect

Inactive Publication Date: 2006-08-23
SONY CORP
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Problems solved by technology

[0051] However, with this method, the MAC address itself cannot be scrambled, which causes a problem in terms of concealment
Also, the fact that the MAC address itself cannot be scrambled means that if the "0s" and "1s" in the data during the transmission of the MAC address form a biased distribution, it cannot be converted into a random sequence of bits and thus still exist in the spectrum in that area Likelihood of Linear Components Occurring
[0052] Furthermore, with IEEE802.11a, the MAC header including the PHY header, MAC address, etc. is clearly separated, and in the case of adopting the above-mentioned scramble notification method to such a wireless communication system, except that the MAC address is described in the DATA section In addition, another part of the MAC address is used for the PHY data header part, which leads to redundant

Method used

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  • Radio communication system, radio communication device, radio communication method, and computer program
  • Radio communication system, radio communication device, radio communication method, and computer program
  • Radio communication system, radio communication device, radio communication method, and computer program

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Embodiment Construction

[0148] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0149] figure 1 The whole structure of the communication system according to one embodiment of the present invention is schematically shown. With the example in this figure, the communication device 21 connected to the network 30 and the communication device 11 connected to the information processing apparatus 12 are wirelessly connected. The communication device 21 functions as an access point (AP), and controls connection of another communication device to the network 30 . The communication device 11 serves as a terminal intended to be connected to the network 30 by, for example, communicating with the communication device 21 . The communication device 11 can be connected with, for example, a personal computer or the like as the information processing device 12 . The communication device 21, the communication device 11, and the network 30 form a wireless...

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Abstract

A scrambling initial value is shared without deteriorating transmission efficiency. On the transmission side, a scrambling initial value is created based on a part of a physical layer header not scrambled, a transmission signal sequence scrambled is created by calculating an exclusive-OR operation between a scrambled sequence generated from the scrambling initial value and a transmission data sequence, and is transmitted. On the reception side, the same descrambling initial value as the scrambling initial value is created based on a part of a physical header of a reception frame, and a reception data sequence is descrambled by calculating an exclusive-OR operation between a descrambled sequence generated from this descrambling initial value and a reception signal sequence scrambled.

Description

technical field [0001] The present invention relates to a wireless communication system, a wireless communication device, a wireless communication method, and a computer program for performing mutual communication between a plurality of wireless communication stations (such as wireless LAN, local area network), and in particular, to a wireless communication system, wireless communication Apparatus and wireless communication method and computer program for interactively performing scrambling / descrambling between a data transmitting station and a data receiving station. [0002] In more detail, the present invention relates to a wireless communication system, a wireless communication device, and a wireless communication method, and a computer program for appropriately performing scrambling / descrambling between transmission and reception using a correct scrambling initial value, and more specifically, The invention relates to a wireless communication system, a wireless communicat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L9/00G09C1/00
Inventor 伊藤镇内田薰规山浦智也
Owner SONY CORP
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