Scheduling Request Transmission Timer Configuration
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Solution Overview
Problem
Existing 5G communication systems face challenges in reliably transmitting scheduling requests over poor quality transmission channels, which affects the stability and efficiency of data transfer in IoT environments.
Innovation Solution
A method and apparatus for transmitting and receiving scheduling requests (SRs) are implemented, where user equipment (UE) receives configuration information from an enhanced node B (eNB) to determine a timer for prohibiting SR transmission, allowing for stable SR transfer even under poor channel conditions, using techniques such as repeated SR transmissions and timer-based prohibition to prevent frequent SRs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If scheduling requests are transmitted frequently to ensure reliable delivery under poor channel conditions, then reliability of SR transfer is improved, but device complexity and energy consumption increase due to repeated transmissions
Solution Approach 1:
The system pre-configures a prohibit timer value through higher layer signaling before SR transmission is needed. When an SR is triggered, the timer is started to automatically control the transmission timing, preventing frequent SR transmissions before the timer expires. This preliminary configuration simplifies the transmission control logic while ensuring reliable SR delivery under poor channel conditions.
2Device complexity
If a prohibit timer is implemented to prevent frequent SR transmissions, then device complexity is reduced, but SR transfer reliability may deteriorate under poor channel conditions
Solution Approach 1:
The prohibit timer value is configured through higher layer signaling and can be adjusted based on channel conditions and service requirements. By dynamically changing the timer parameter, the system balances between preventing excessive SR transmissions (reducing complexity) and ensuring SR reliability under varying channel conditions. The timer value can be optimized to match the specific deployment scenario.
3Quantity of substance
If SR transmissions are prohibited during timer period to reduce overhead, then network overhead is reduced, but SR response time increases when channel conditions improve
Solution Approach 1:
The prohibit timer mechanism dynamically controls SR transmission based on the elapsed time since the last SR. The timer value is configured to adapt to different channel conditions and service types, allowing the system to balance between reducing control overhead and maintaining acceptable SR response time. When the timer expires, SR transmissions can resume if needed.
Data Source
AI summary
The present disclosure relates to communication schemes for combining 5G communication systems with IoT technology to support higher data transmission rate as post-4G systems and systems for the same. The present disclosure may be used in intelligent services (e.g., smart home, smart building, smart city, smart car, or connected car, health-care, digital education, retail business, security and safety-related services, etc.) based on the 5G communication technology and IoT-related techniques. Disclosed is a method for transmitting a scheduling request (SR) by a user equipment (UE) in a cellular communication system. The transmitting method may comprises receiving configuration information related to transmission of the SR from an enhanced node B (eNB), determining a value of a timer for prohibiting an SR transmission based on the received configuration information, and transmitting a set of SRs, wherein the timer may start at the time of transmission of a first SR of the SR set.