Radio Network BSR and SR Transmission with Priority-Based Prohibit Timer
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Solution Overview
Problem
Current buffer status reporting and scheduling request methods in radio networks do not adequately consider the required slot duration and numerology of logical channels, leading to delays or packet discarding for high-priority and delay-sensitive channels.
Innovation Solution
A method that allows for the transmission of buffer status reports (BSR) and scheduling requests (SR) in multiple time slots with different durations, enabling more flexible and efficient resource allocation by considering the priority and slot duration of logical channels, and allowing multiple transmissions before a prohibit timer is activated.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a prohibit timer is activated after BSR/SR transmission to prevent excessive transmissions, then transmission overhead is reduced, but high-priority delay-sensitive logical channels may be delayed or have packets discarded
Solution Approach 1:
The patent applies local quality by differentiating the prohibit timer behavior based on logical channel priority. High-priority delay-sensitive logical channels are exempt from the prohibit timer restriction, allowing them to transmit BSR/SR immediately when data becomes available, while lower-priority channels continue to observe the timer. This selective application of the prohibit timer mechanism ensures that critical traffic maintains reliability without excessive transmission overhead.
Solution Approach 2:
The patent introduces dynamic behavior by allowing the prohibit timer to be selectively applied or bypassed based on the priority and characteristics of the logical channel. The system dynamically adjusts transmission restrictions in real-time, permitting immediate retransmission for high-priority channels while maintaining rate limiting for lower-priority channels, thus optimizing both reliability and resource efficiency.
2Productivity
If BSR/SR transmission is prohibited after a previous transmission to limit retransmissions, then resource waste is reduced, but transmission delay increases for delay-sensitive channels
Solution Approach 1:
The patent applies local quality by implementing differentiated prohibit timer behavior based on logical channel priority. High-priority delay-sensitive channels are excluded from prohibit timer constraints, enabling immediate BSR/SR transmission when data arrives, while lower-priority channels continue to observe the timer. This selective approach minimizes transmission delay for critical traffic without causing excessive resource waste across all channels.
Solution Approach 2:
The system dynamically adjusts transmission timing based on channel priority characteristics. The prohibit timer mechanism is dynamically bypassed for high-priority channels while actively enforced for lower-priority channels, creating a flexible resource allocation strategy that responds to varying traffic requirements in real-time.
3Device complexity
If a single time slot duration is used for all logical channels, then system complexity is reduced, but delay-sensitive channels cannot meet their timing requirements
Solution Approach 1:
The patent applies segmentation by dividing logical channels into different priority groups (high-priority delay-sensitive and lower-priority channels). This segmentation allows the system to apply different transmission rules and prohibit timer behaviors to each group, enabling delay-sensitive channels to bypass timing restrictions while lower-priority channels maintain standard rate limiting, thus meeting diverse timing requirements without a fully complex unified system.
Solution Approach 2:
The patent implements local quality by applying differentiated time slot management rules to different logical channel segments. High-priority channels receive preferential treatment with relaxed or bypassed prohibit timer constraints, while lower-priority channels continue to follow standard timing rules. This localized differentiation achieves reliable delay-sensitive channel performance without requiring complete system-wide complexity.
Data Source
AI summary
The invention refers to a method for a communication device in a radio network, which comprises a step of performing a first transmitting, in a first time slot of a first duration, comprising transmitting a Buffer Status Report, BSR, for a plurality of logical channels, and a step of performing a second transmitting, in a second time slot of a second duration, comprising transmitting a Scheduling Request, SR, for at least a first part of the plurality of logical channels; the invention further refers to corresponding communication devices, to a computer-readable storage, to a computer program and to a carrier.