Wireless Ranging Control via Multicast Scheduling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face inefficiencies in ranging operations, particularly in peer-aware communication networks, due to high energy consumption and latency issues, especially in dense environments and scenarios with numerous ranging requests, where traditional methods require extensive message exchanges and dedicated time slots.
Innovation Solution
The implementation of optimized ranging procedures, such as single-sided and double-sided two-way ranging techniques, which reduce message exchanges by leveraging broadcast characteristics and introducing new control and scheduling information elements to manage device roles and scheduling, allowing for multicast and contention-based ranging operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional ranging methods are used in peer-aware communication networks, then ranging operations can be performed, but energy consumption is high and latency increases in dense environments with numerous ranging requests
Solution Approach 1:
The patent combines multiple ranging requests into a single multicast message exchange. Instead of performing separate ranging operations for each device pair, the system uses a coordinator device to manage multicast ranging groups where multiple devices can participate in synchronized ranging operations, significantly reducing the total number of message exchanges and energy consumption in dense networks
Solution Approach 2:
The system performs preliminary setup by establishing ranging groups and assigning device roles (coordinator, contoller, controlee) before actual ranging operations begin. This pre-organization allows devices to efficiently manage their ranging requests and avoid redundant message exchanges during operational phases
2Productivity
If traditional ranging methods are used in peer-aware communication networks, then ranging operations can be performed, but latency increases in dense environments with numerous ranging requests
Solution Approach 1:
Multiple ranging operations are merged into coordinated multicast exchanges led by a coordinator device. The coordinator manages timing and synchronization for multiple device pairs simultaneously, reducing the cumulative latency that would result from sequential traditional ranging operations
Solution Approach 2:
The system implements periodic ranging rounds with structured message exchanges. Devices follow standardized periodic patterns for requesting and providing ranging information, which optimizes timing and reduces random access conflicts and delays in dense network conditions
3Measurement precision
If extensive message exchanges are performed for ranging operations, then ranging accuracy can be maintained, but energy consumption and latency increase
Solution Approach 1:
The patent extracts and consolidates ranging information elements into optimized message structures. Essential ranging data (timestamps, distance calculations, device identifiers) are extracted and transmitted efficiently through standardized information elements, maintaining measurement precision while reducing message overhead and energy consumption
Solution Approach 2:
The ranging message structure is designed as a universal multi-functional format that can carry various types of ranging information (time of flight, round trip time, device roles, group identifiers) in a single standardized message framework, eliminating the need for multiple specialized message types and reducing overall communication overhead
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A method and apparatus of a first network entity in a wireless communication system supporting ranging capability is provided, the method and apparatus comprises: generating a medium access control (MAC) common part sublayer-data request (MCPS-DATA.request) primitive including a ranging enable indicator and a ranging request measurement and control IE (RRMC IE) with a reply-time request; transmitting, to a second network entity, a first MAC Data including the RRMC IE; receiving, from the second network entity, a second MAC Data including a ranging reply time instantaneous IE (RRTI IE), and the RRMC IE; and identifying a local value of a receive ranging counter (RxRangingCounter).