IEEE 802.15.4Z Ranging MAC Aggregation for Energy Efficiency
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face inefficiencies in ranging operations, particularly in energy consumption and latency, due to the high number of message exchanges required for ranging requests in dense environments and the limitations of existing IEEE standards, which do not optimize message exchanges or support contention-based ranging.
Innovation Solution
The implementation of optimized ranging procedures, such as single-sided and double-sided two-way ranging, which reduce the number of required message exchanges by utilizing broadcast characteristics of the wireless channel and introducing new control and scheduling information elements, enabling multicast and contention-based ranging configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional ranging procedures are used in dense wireless environments, then ranging requests can be sent to multiple neighbor entities, but the number of message exchanges increases significantly leading to high energy consumption
Solution Approach 1:
The patent combines multiple ranging request messages into a single aggregated message that can be transmitted to multiple neighbor entities simultaneously. The MAC layer consolidates ranging requests for multiple targets into one message exchange, reducing the total number of transmissions and receptions required, thereby significantly lowering energy consumption while maintaining the ability to perform ranging with multiple entities.
Solution Approach 2:
The patent introduces a universal ranging request message format that can serve multiple neighbor entities simultaneously. This single message structure is designed to carry ranging request information for multiple targets, making the communication protocol multi-functional and eliminating the need for separate dedicated messages for each neighbor entity.
2Adaptability or versatility
If traditional ranging procedures are used, then ranging information can be exchanged with multiple entities, but the number of message exchanges increases leading to high latency
Solution Approach 1:
The patent merges multiple ranging information exchange operations into a single consolidated message exchange. By combining ranging requests and responses for multiple neighbor entities into aggregated messages, the system reduces the total time required for ranging operations across multiple entities, thereby lowering latency while maintaining comprehensive ranging capability.
3Reliability
If existing IEEE standards are used for ranging, then basic ranging functionality is supported, but optimization for dense environments and contention-based ranging is not available
Solution Approach 1:
The patent introduces dynamic contention-based ranging mechanisms that allow entities to compete for ranging opportunities in a controlled manner. This dynamic approach enables the system to adapt to dense environments where multiple entities need to perform ranging operations simultaneously, improving overall ranging operation efficiency while maintaining reliable ranging functionality through standardized protocols.
Solution Approach 2:
The patent modifies ranging operation parameters such as message aggregation levels, contention window sizes, and timing configurations to optimize performance in dense environments. By dynamically adjusting these parameters based on network conditions, the system achieves both reliable ranging functionality and improved operational efficiency.
Data Source
AI summary
A network entity and a method of the network entity in a wireless communication system supporting ranging capability are provided. The network entity and the method comprise: identifying, by a higher layer of the network entity, a ranging reply time node list (RrtiNodeList) indicating a list of neighbor network entities for which ranging reply time instantaneous information elements (RRTI IEs) are requested along with receive ranging counter values; generating, by the higher layer of the network entity, a MCPS-DATA.request primitive including the RrtiNodeList; transmitting, to a MAC layer of the network entity, the generated MCPS-DATA.request primitive; and transmitting, to another network entity in the list of neighboring network entities, MAC data including ranging information, the RRTI, and ranging measurement information IEs (RMI IEs), wherein the MAC layer of the network entity is further configured to transmit, to the higher layer of the network entity, an MCPS-DATA.confirm primitive.