Wireless Communication Preamble and Inter-Training Signal Generation
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Solution Overview
Problem
Current wireless communication technologies face inefficiencies in identifying signals from Basic Service Sets (BSS) and Overlapping Basic Service Sets (OBSS), leading to difficulties in determining signal reception and transmission control, especially when header information is not received, and in systems with intermittently transmitted signals.
Innovation Solution
A wireless communication apparatus and method that generates a preamble signal with header information and inter-training signals, allowing for efficient transmission and detection across multiple frequency channels, enabling accurate signal identification and transmission control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If advanced spatial reuse technology is applied and signal identification is based on header information, then communication capacity is improved, but if header information cannot be received, signal identification becomes impossible and transmission control fails
Solution Approach 1:
The patent applies preliminary action by transmitting the BSS identifier in the training field before the header information is transmitted. This allows receiving devices to identify the signal type (own BSS or OBSS) in advance, before attempting to decode the header. The training field contains a predetermined sequence that enables early signal classification, ensuring that even if header reception fails, the device can still determine whether to proceed with transmission or defer based on the training field identification alone.
2Reliability
If signal level is continuously detected to determine frame end, then accurate transmission control is achieved, but communication efficiency decreases due to constant detection requirements
Solution Approach 1:
The patent applies preliminary action by including duration information in the header field that indicates the time until the end of the current frame. Receiving devices can use this pre-provided duration information to determine when transmission should defer, eliminating the need for continuous signal level detection. The device can calculate the deferment period based on the duration field value, significantly reducing the monitoring burden while maintaining accurate transmission control.
3Ease of manufacture
If signaling messages are transmitted using shared signaling channels with predetermined subcarriers, then signal organization is improved, but the system cannot adapt to intermittently transmitted signals as in wireless LAN
Solution Approach 1:
The patent applies universality by making the training field serve multiple functions: it acts as both a signal detection reference and a carrier of BSS identification information. The training field with predetermined sequence is universally applicable to all transmitted frames regardless of whether the transmission is continuous or intermittent. This multi-functional design allows the same training field structure to work effectively in both continuous transmission scenarios (where it aids synchronization) and intermittent transmission scenarios (where it enables rapid signal type identification upon arrival).
Data Source
AI summary
The present technology relates to a wireless communication apparatus and method, and a program which enable communication to be performed more efficiently.The wireless communication apparatus includes a preamble generating unit configured to generate a preamble signal including header information, an inter-training generating unit configured to generate an inter-training signal including at least part of information of the header information, and a wireless transmission processing unit configured to transmit transmission data after transmitting the preamble signal in at least one or more frequency channels among a plurality of the frequency channels and transmit a plurality of the inter-training signals by utilizing one or a plurality of the frequency channels among the plurality of the frequency channels during a transmission period of the transmission data. The present technology can be applied to a wireless communication apparatus.