UWB Ranging Payload Allocation for Buffer-Aware Data Exchange
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Solution Overview
Problem
Existing wireless communication systems face challenges in effectively providing services for IoT environments, particularly in efficiently exchanging data between UWB devices while considering transmission/reception capabilities to prevent data loss.
Innovation Solution
A method and device for UWB communication that includes transmitting and receiving control messages with a ranging device management list (RDML) and ranging initiation messages, along with data piggybacked responses, to manage payload allocation and ensure accurate data exchange between UWB devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If data is piggybacked on ranging response messages in UWB communication, then data exchange efficiency is improved, but data loss may occur due to buffer overflow when device capabilities are not considered
Solution Approach 1:
The patent changes the parameter of payload size allocation dynamically based on device capabilities. The first device determines its transmission capability and adjusts the payload size parameter accordingly before piggybacking data on ranging response messages, ensuring optimal data exchange efficiency while preventing buffer overflow and data loss.
Solution Approach 2:
The patent implements dynamic payload allocation where the data size is not fixed but adapts based on the transmission capability of the receiving device. The first device adjusts the amount of data piggybacked on ranging response messages in real-time according to the second device's buffer capacity, making the system flexible and reliable.
2Productivity
If payload size is increased to transmit more data, then data exchange efficiency improves, but the risk of data loss increases when exceeding device buffer capacity
Solution Approach 1:
The patent employs feedback mechanisms where devices exchange capability information about their buffer capacities and transmission limits. The first device receives feedback about the second device's capabilities and uses this information to determine an appropriate payload size that maximizes data transmission while staying within the receiving device's buffer capacity, thus preventing data loss.
Solution Approach 2:
The patent performs preliminary assessment of device capabilities before actual data transmission. The first device evaluates the transmission capability and buffer capacity of the second device in advance, then pre-determines the optimal payload size for piggybacking data on ranging response messages, ensuring efficient and safe data exchange from the outset.
Data Source
AI summary
A method of a first ultra-wideband (UWB) device according to an embodiment of the disclosure may comprise transmitting a control message including a ranging device management list (RDML) for UWB ranging; transmitting a ranging initiation message based on the control message; and receiving, from a second UWB device, a ranging response message corresponding to the ranging initiation message and data piggybacked on the ranging response message, wherein the data includes a header and a payload, and wherein the header includes a length of the data and an address of the second UWB device.