Ambient IoT Access Resource Allocation Using Frequency Shift Ordering
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently allocating and determining Device-to-Reader (D2R) resources for access and inventory procedures, leading to increased signaling overhead and latency, particularly in the context of Ambient Internet of Things (IoT) devices with ultra-low complexity and power consumption.
Innovation Solution
A method involving frequency shifting and resource allocation mechanisms, where devices determine their transmission resources based on a received message's frequency shifts and order of identification, allowing for efficient D2R communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If traditional resource allocation methods are used for D2R access procedures, then device simplicity is maintained, but signaling overhead and latency increase
Solution Approach 1:
The patent applies preliminary action by pre-configuring resource allocation patterns and frequency shift mappings in the system. Devices can determine their transmission resources based on pre-established rules rather than complex real-time negotiations, reducing signaling overhead while maintaining simplicity. The frequency shift patterns are predetermined and devices can autonomously select appropriate resources based on their identification order.
Solution Approach 2:
The patent utilizes parameter changes by dynamically adjusting frequency shift values based on device identification order and received messages. Instead of complex resource allocation protocols, the system changes frequency parameters (shift amounts, time offsets) to allocate resources efficiently. This allows Ambient IoT devices to operate with minimal complexity while reducing signaling overhead through parameter-based resource determination.
2Productivity
If frequency shifting and order-based allocation is implemented, then resource allocation efficiency improves, but system complexity increases
Solution Approach 1:
The patent implements self-service by enabling devices to autonomously determine their own transmission resources based on their identification order and received frequency shift information. Each device independently calculates its resource allocation without requiring complex centralized coordination or additional signaling, thereby improving efficiency while keeping individual device complexity low. The system leverages the natural order of device identification to distribute resources automatically.
3Loss of time
If D2R resource scheduling is optimized, then latency is reduced, but signaling overhead may increase
Solution Approach 1:
The patent applies the extraction principle by removing unnecessary signaling elements from the access procedure. Instead of exchanging comprehensive resource allocation messages, the system extracts only the essential frequency shift information and identification order data needed for resource determination. This reduces signaling overhead while maintaining efficient resource allocation and reducing latency through streamlined communication.
Data Source
AI summary
Methods, systems, and apparatuses are provided for resource utilization of access procedures in a wireless communication system, wherein a method for a first device comprises receiving a first Reader-to-Device (R2D) message for paging at least the first device, transmitting a first Device-to-Reader (D2R) message based on a first frequency shift, wherein the first D2R message comprises a first Identification (ID) generated by the first device, receiving a second R2D message indicating a set of IDs comprising at least the first ID, and transmitting a second D2R message based on a second frequency shift when the second R2D message indicates information associated with a set of frequency shifts, wherein the second frequency shift is determined, among the set of frequency shifts, based on at least an order of the first ID among the set of IDs.