Wireless Transmission Signal Identification via Spreading Code Selection
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Solution Overview
Problem
Existing wireless sensor networks face challenges in reducing power consumption and enabling long-distance wireless communication while maintaining efficient identification of wireless sensor terminals.
Innovation Solution
A transmission apparatus and reception apparatus that use a spreading code selected based on identification information to transmit and receive signals, allowing the reception apparatus to estimate and acquire the identification information, thereby omitting the need for a terminal ID in the wireless frame and reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a terminal ID is included in the wireless frame for identification, then the reception apparatus can identify the transmission source, but the transmission time increases and power consumption increases
Solution Approach 1:
The patent extracts the identification function from the terminal ID field and implements it through spreading code selection. The terminal ID is omitted from the wireless frame, and instead, different spreading codes are assigned to different terminal IDs. The reception apparatus identifies the transmission source by detecting which spreading code is used, thereby achieving identification without transmitting the terminal ID explicitly.
Solution Approach 2:
The spreading code serves multiple functions: it enables spread spectrum modulation for reliable communication and simultaneously carries identification information about the terminal. By making the spreading code multi-functional, the patent eliminates the need for separate identification fields, reducing frame length and power consumption while maintaining identification capability.
2Loss of information
If the wireless frame includes terminal ID, then identification is straightforward, but the transmission time increases
Solution Approach 1:
The patent removes the terminal ID from the wireless frame structure and extracts its identification function to the spreading code selection mechanism. This extraction reduces the frame length and transmission time while preserving the ability to identify the transmission source through spreading code detection.
Solution Approach 2:
The patent merges the identification information with the spreading code that is already required for spread spectrum modulation. By combining these functions into a single element (the spreading code), the patent eliminates redundant data transmission and reduces overall transmission time.
Data Source
AI summary
[Object] To provide a transmission apparatus, reception apparatus, and information processing method which enable a wireless device to carry out wireless transmission with less power consumption. [Solution] A transmission apparatus includes: a communication unit configured to transmit a transmission signal from the transmission apparatus to a reception apparatus via wireless communication; and a signal processing unit configured to generate the transmission signal in which transmission information is spread by using a spreading code selected according to identification information of the transmission apparatus, in order to enable the reception apparatus to acquire the identification information on the basis of an estimation result of the spreading code used for the transmission signal.