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Transmission method and device for wireless local area network signaling

A wireless local area network and a transmission method technology are applied in the field of low-complexity wireless local area network signaling transmission methods and devices, and can solve the problems of increasing the number of bits, increasing the processing complexity, and increasing the complexity of VHT-SIG-B coding.

Active Publication Date: 2013-02-13
CHINA ACADEMY OF INFORMATION & COMM
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Problems solved by technology

Although the amount of information carried by the VHT-SIG-B extended bit sequence is exactly the same as that of the original VHT-SIG-B bit sequence, its sequence length is several times that of the original VHT-SIG-B bit sequence, which greatly increases the The number of bits that are BCC encoded, leading to a significant increase in the encoding complexity of VHT-SIG-B
[0033] In addition, for 160MHz channel or 80+80MHz channel, there are many same operations in the two 80MHz sub-band transmission processes, and many same intermediate signals are generated, but the existing methods do not make full use of this characteristic, resulting in many Repeated operations greatly increase the processing complexity

Method used

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  • Transmission method and device for wireless local area network signaling
  • Transmission method and device for wireless local area network signaling
  • Transmission method and device for wireless local area network signaling

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Embodiment Construction

[0071] The specific embodiment of the present invention will be further described in detail below in conjunction with the accompanying drawings. The above and other objects, features and advantages of the present invention will be apparent to those skilled in the art from the detailed description of the present invention.

[0072] like Figure 4 As shown, the wireless local area network signaling sending method of the present invention includes:

[0073] Step 1, BCC encoding is performed on the VHT-SIG-B bit sequence once to generate the coded bit sequence C1;

[0074] Step 2, repeating and zero-filling the generated coded bit sequence C1 to form a VHT-SIG-B coded bit sequence;

[0075] Step 3, BCC interleaving: reorder the VHT-SIG-B coded bits;

[0076] Step 4, constellation mapping: map the coded bits after interleaving to the BPSK constellation to form a VHT-SIG-B constellation symbol stream;

[0077] Step 5, space expansion: copy the VHT-SIG-B constellation symbol stre...

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Abstract

The invention relates to a transmission method for wireless local area network signaling. The method comprises the following steps of: performing primary binary convolutional coding (BCC) on a very high throughput-signal-B (VHT-SIG-B) bit sequence; performing repeating and zero filling operation on a generated coded bit sequence to form a VHT-SIG-B coded bit sequence; and before space mapping, performing transmission processing of only one 80MHz sub-band for a 160MHz channel and an 80+80MHz channel, and performing space mapping and subsequent processing on an output signal which is taken as signals of two 80MHz sub-bands. A transmission device for the wireless local area network signaling comprises a coding module, a data stream processing module and a transmission module. The repetitiveness of a VHT-SIG-B extended bit sequence and the same part in the transmission processes of different sub-bands of the 160MHz channel and the 80+80MHz channel are fully utilized, so that repeated operation is avoided, and processing complexity is remarkably lowered.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a low-complexity wireless local area network (WLAN) signaling sending method and device. Background technique [0002] Wireless local area network (WLAN) refers to a local area network technology that uses wireless communication technology for data transmission. The current international mainstream WLAN technology is the Wireless Fidelity (Wi-Fi) technology based on IEEE 802.11a / b / g / n series standards. Among them, IEEE 802.11b adopts direct sequence spread spectrum, and the maximum transmission rate reaches 11Mbps; IEEE 802.11a / g adopts Orthogonal Frequency Division Multiplexing (OFDM), and the maximum transmission rate can reach 54Mbps; IEEE 802.11n adopts OFDM based on Multiple-input multiple-output (MIMO) technology, the maximum transmission rate can reach 600Mbps. At present, the application of Wi-Fi technology has been very popular all over the w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04W84/12
Inventor 罗振东万屹
Owner CHINA ACADEMY OF INFORMATION & COMM
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