Delayed Buffer Status Report Mechanism for LTE Resource Allocation
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Solution Overview
Problem
Current LTE protocols do not efficiently manage radio resource allocation and data transmission, leading to redundant operations and inefficient use of radio resources due to lack of consideration for application-specific data characteristics.
Innovation Solution
Implementing a delayed buffer status report mechanism, where a timer is activated upon receipt of data, allowing simultaneous transmission of RLC ACK and PDU, and optimizing radio resource allocation by releasing unused resources based on predetermined conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If immediate transmission of buffer status reports and RLC ACK is implemented, then data transmission responsiveness is improved, but radio resource allocation efficiency deteriorates due to redundant operations
Solution Approach 1:
The patent combines the transmission of buffer status reports and RLC ACK into a single uplink transmission opportunity. The MAC layer buffers the buffer status report and waits for the RLC ACK to be ready, then transmits both together in one resource allocation, eliminating redundant separate transmissions and improving radio resource efficiency while maintaining responsiveness.
Solution Approach 2:
The MAC layer preliminarily buffers the buffer status report upon receiving data from higher layers, rather than transmitting it immediately. This preliminary action allows the system to coordinate the transmission with the RLC ACK timing, enabling combined transmission and reducing overall signaling overhead.
2Adaptability or versatility
If separate transmission of RLC ACK and PDU is implemented, then protocol layer independence is improved, but device complexity increases due to multiple transmission operations
Solution Approach 1:
The patent merges the separate transmission operations of RLC ACK and PDU into a single combined transmission. The MAC layer prepares both the buffer status report and waits for the RLC ACK, then transmits them together in one uplink resource allocation, reducing the number of separate transmission operations while maintaining protocol layer independence through coordinated timing.
3Productivity
If continuous radio resource allocation is implemented, then data transmission availability is improved, but resource utilization efficiency deteriorates due to unused allocated resources
Solution Approach 1:
The patent implements a timer-based mechanism that periodically checks whether uplink data is available before triggering resource allocation. Instead of continuously allocating resources, the system uses periodic timer expirations to determine whether buffer status reports need to be transmitted, thereby allocating resources only when necessary and improving overall resource utilization efficiency while maintaining transmission availability.
Data Source
AI summary
A method for transmitting a signal to a transmitter at a receiver in a wireless communication system is disclosed. The method includes receiving first information to be transmitted to the transmitter from a higher layer and activating a timer, receiving second information to be transmitted to the transmitter from the higher layer, and transmitting a resource allocation request message to the transmitter, for transmitting the first and second information, upon expiration of the timer.