Receiving Device Buffer Status Reporting for Wireless Throughput
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Solution Overview
Problem
In wireless communication systems, particularly in dual connectivity scenarios, buffer overflow occurs due to mismatched buffer sizes between base stations and terminal devices, leading to decreased throughput as packets are frequently retransmitted when the secondary base station's buffer is too small, causing overflow and reducing overall communication efficiency.
Innovation Solution
A receiving device and a communication status reporting method where the terminal device monitors its reception buffer status and transmits communication status information to the base station, allowing the base station to adjust scheduling and reduce data transmission frequency to prevent buffer overflow, thereby maintaining throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the buffer area for the secondary base station is set to be relatively small, then memory resources are saved, but buffer overflow occurs frequently leading to decreased throughput
Solution Approach 1:
The patent applies dynamics by enabling dynamic adjustment of buffer area sizes based on real-time communication conditions. The receiving device reports its buffer status, and the base station adjusts the buffer area allocation dynamically. When buffer overflow is detected or predicted, the buffer area is enlarged; when buffer status is healthy, the buffer area is reduced, thus adapting buffer size to actual needs rather than using a fixed small size
Solution Approach 2:
The patent implements feedback through the receiving device reporting its buffer status to the base station. The base station uses this feedback information to adjust the buffer area allocation for each base station. This closed-loop feedback mechanism ensures that buffer size is continuously optimized based on actual reception conditions, preventing overflow while avoiding unnecessary resource consumption
2Reliability
If the buffer area for the secondary base station is set to be relatively large, then buffer overflow is prevented, but memory resources are wasted
Solution Approach 1:
The system dynamically adjusts buffer area sizes based on real-time conditions rather than using a fixed large size. When communication conditions are stable and overflow is unlikely, the buffer area is reduced to save memory resources. When overflow risk is detected through feedback, the buffer area is temporarily enlarged to ensure reliability, thus optimizing the balance between memory usage and overflow prevention
Solution Approach 2:
The patent changes the buffer area parameter dynamically based on buffer status reports. The base station modifies the buffer area size as a variable parameter rather than keeping it fixed. This parameter adjustment allows the system to allocate memory resources efficiently - using larger buffers only when necessary to prevent overflow, and reducing buffer size when conditions permit, thereby avoiding wasted memory resources
3Reliability
If packets are frequently retransmitted due to buffer overflow, then data delivery reliability is improved, but communication delay increases
Solution Approach 1:
The system takes preliminary action by having the receiving device report its buffer status before overflow occurs. The base station uses this advance information to adjust transmission parameters proactively, reducing the likelihood of overflow and subsequent retransmissions. This preliminary buffer status reporting and proactive adjustment prevents the need for frequent retransmissions, thereby reducing communication delay while maintaining reliability
Data Source
AI summary
A terminal device (200) includes a wireless communication unit (210) that receives data transmitted from a base station device (100); a reception buffer (231) that can hold the data received by the wireless communication unit (210); and a transmission control unit (222) that can perform control, in accordance with a status of the reception buffer, such that communication status information indicating a reception status of the data is transmitted to the base station device (100).


