Autonomous OFDM Resource Block Allocation for Low-Latency M2M Transmission
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Solution Overview
Problem
In OFDM wireless communication systems, machine-to-machine data transmission efficiency is hindered by the need for base station scheduling, which can lead to resource block allocation inefficiencies and increased latency.
Innovation Solution
Wireless communication devices autonomously select and use unallocated OFDM resource blocks, inserting authorization marks based on internal logic and time, allowing for unscheduled transmission without base station intervention, thereby optimizing resource utilization and reducing latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If base station scheduling is used for machine data transmission, then resource allocation can be controlled, but transmission efficiency decreases and latency increases
Solution Approach 1:
The patent implements self-service by enabling machine devices to autonomously select and transmit data using unallocated resource blocks without requiring base station scheduling. Machines generate authorization marks based on their identifiers and current time, allowing them to independently access the wireless medium and transmit data directly, thereby eliminating scheduling delays and improving transmission efficiency.
Solution Approach 2:
The patent applies preliminary action by pre-allocating unallocated resource blocks specifically for machine data transmission before actual data sends occur. The base station configures these resource blocks in advance with authorization mark requirements, enabling machines to immediately use them without real-time scheduling decisions, thus reducing latency.
2Loss of time
If autonomous machine selection of resource blocks is implemented, then latency is reduced, but resource allocation control is lost
Solution Approach 1:
The patent implements feedback mechanisms where the base station monitors authorization marks in transmitted data and provides feedback to machines about resource block usage. This allows autonomous machines to learn from base station responses and adjust their selection behavior, maintaining resource allocation control while preserving low-latency autonomous transmission capabilities.
Solution Approach 2:
The patent changes the parameter of resource block allocation from centralized scheduled allocation to distributed autonomous allocation based on authorization marks. By modifying the allocation mechanism to use time-based and identifier-based authorization criteria, the system maintains control through parameterized rules while enabling autonomous machine selection for low-latency transmission.
3Productivity
If unallocated resource blocks are used for machine data, then transmission efficiency improves, but data security may be compromised
Solution Approach 1:
The patent applies preliminary action by pre-establishing authorization mark requirements and validation mechanisms before machine data transmission. The base station configures the authorization mark structure in advance, and machines pre-calculate their authorization marks based on identifiers and current time, ensuring security measures are in place before data sends occur.
Solution Approach 2:
The patent uses authorization marks as an intermediary element between machine data and the wireless transmission medium. These authorization marks act as a mediator that carries security information about the transmitting machine, allowing the base station to verify machine identity and permissions without requiring centralized scheduling, thus maintaining both efficiency and security.
Data Source
AI summary
A wireless communication device uses an Orthogonal Frequency Division Multiplex (OFDM) resource block structure. The wireless communication device generates and stores data for wireless transmission. The wireless communication device translates an identifier and a current time into one or more OFDM resource blocks that are reserved for use without base station scheduling. The wireless communication device generates one or more authorization marks. The wireless communication device wirelessly transmits the data and the one or more authorization marks in the one or more OFDM resource blocks that are reserved for use without base station scheduling.