Bluetooth LE Data Length Extension Negotiation
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Solution Overview
Problem
Bluetooth LE technology faces limitations in data transmission rate and power consumption due to reduced data capacity per packet, leading to longer transmission times and increased power usage when handling large data amounts.
Innovation Solution
A method and apparatus that negotiate and extend the data transmission and reception lengths through a request-response process, allowing for increased packet sizes up to 249 octets, reducing the number of packets needed and thus decreasing transmission time and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If Bluetooth LE technology uses standard packet size for data transmission, then power consumption is reduced for small data amounts, but data transmission rate decreases when large amounts of data need to be transmitted
Solution Approach 1:
The patent changes the packet length parameter from the standard fixed size to an extended variable size (up to 249 octets). This parameter change allows the system to transmit larger amounts of data in fewer packets, thereby increasing the data transmission rate and reducing transmission time when large data amounts need to be transferred.
2Productivity
If Bluetooth LE technology uses standard packet size, then connection management is simplified, but the number of packets required for large data transmission increases leading to higher power consumption
Solution Approach 1:
The patent extends the packet length parameter to allow larger data payloads per packet. This reduces the total number of packets required for large data transmissions, thereby reducing the cumulative power consumption associated with packet handling, processing, and wireless transmission operations.
3Productivity
If Bluetooth LE technology uses extended packet length, then data transmission rate improves, but device compatibility and connection complexity increase
Solution Approach 1:
The patent implements dynamic packet length negotiation between devices. The system can adaptively select between standard and extended packet lengths based on the data transmission requirements and device capabilities, allowing flexible optimization without requiring all devices to support extended packets permanently.
Solution Approach 2:
The patent performs packet length negotiation during the connection establishment phase before actual data transmission begins. This preliminary action allows devices to agree on the packet length to be used, simplifying subsequent data transmission operations while maintaining compatibility through advance coordination.
Data Source
AI summary
The present invention relates to a method and apparatus for extending a data length of Bluetooth communication. A method of extending a data length of Bluetooth communication according to the present invention includes receiving a first message including information of a second device from the second device, transmitting a connection request message to the second device based on the first message, performing Bluetooth connection with the second device based on the connection request message, transmitting an extension request message which requests extension of a transmission data length and a reception data length through the connected Bluetooth, and receiving an extension response message in response to the request message through the connected Bluetooth, wherein the request message includes at least one of first maximum transmission data length information, first maximum reception data length information, first maximum transmission time information, or first maximum reception time information of the first device, and wherein the response message includes at least one of second maximum transmission data length information, second maximum reception data length information, second maximum transmission time information, or second maximum reception time information of the second device.