Sidelink Transmission Accumulation Control for Interference Management
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Solution Overview
Problem
In wireless communication systems, especially in sidelink transmissions, high priority packets often interfere with each other due to simultaneous transmissions, leading to reduced accurate reception, as devices may transmit without waiting, even if it causes interference to other devices.
Innovation Solution
A method where sidelink devices accumulate a value based on an accumulation rate to determine whether to transmit, allowing high priority messages to be sent while avoiding interference by tracking an accumulated value for transmission over a sidelink, and a base station measures interference to control the accumulation of this value through sidelink parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If devices transmit high priority packets without waiting, then transmission delay is reduced, but interference with other transmissions increases
Solution Approach 1:
The system performs preliminary actions by accumulating values before transmission decisions are made. Devices accumulate values at different rates based on priority levels, and only when the accumulated value exceeds a threshold does transmission occur. This preliminary accumulation phase allows the system to prepare for transmission while controlling interference, resolving the contradiction between rapid transmission and interference avoidance.
Solution Approach 2:
The system changes parameters by using different accumulation rates for different priority levels. High priority packets accumulate values faster than low priority packets, allowing them to reach transmission thresholds more quickly. This parameter differentiation enables high priority transmissions to occur with reduced delay while still maintaining interference control through the threshold mechanism, thus resolving the technical contradiction.
2Object-affected harmful factors
If devices wait for channel clearance before transmission, then interference is reduced, but transmission delay increases
Solution Approach 1:
The system introduces dynamics by making transmission decisions based on accumulated values that change over time rather than static channel clearance waiting. Devices continuously accumulate values, and transmission opportunities arise dynamically when thresholds are exceeded. This dynamic approach allows the system to balance interference control with transmission timing, avoiding both excessive waiting and uncontrolled interference.
3Productivity
If multiple devices transmit simultaneously, then productivity is improved, but reception accuracy deteriorates
Solution Approach 1:
The system implements feedback mechanisms where devices monitor accumulated values and transmission outcomes. By tracking accumulated values over time and adjusting transmission decisions based on these measurements, the system can coordinate transmissions to improve overall throughput while maintaining reception accuracy. The feedback loop allows devices to learn from past transmissions and optimize future transmission timing.
Data Source
AI summary
An apparatus for wireless communication based on sidelink accumulates a value, e.g., a token value, based on an accumulation rate of a transmit beam. When the apparatus has a packet for transmission over sidelink, the apparatus determines whether to transmit the packet over the sidelink based on a current accumulation of the value. The accumulation may be based on any of a CBR, a CR, and/or a feedback rate. A base station may measure interference on an access link of the base station and transmit a side link parameter that controls accumulation of a value at a transmitting device for the transmission of sidelink communication based on the measured interference.