HARQ Process Disabling for Receiver Buffer Reuse
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Solution Overview
Problem
The use of HARQ processes in communication systems occupies excessive buffer space in receiving devices, necessitating a method to prevent this occupation and improve network throughput and system performance.
Innovation Solution
A method and devices for disabling HARQ processes in receiving and sending devices based on indication data, using network identifiers, DCI, CRC data, and RA-RNTI to determine when to disable HARQ, allowing for subsequent data reuse and reducing storage requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If HARQ mechanism is enabled, then reliability of automatic repeat request is improved, but buffer space occupied in receiving device increases
Solution Approach 1:
The patent changes the state parameter of the HARQ process from enabled to disabled based on transmission success. When the network device determines that data transmission is successful (via ACK feedback), it sends indication information to disable the HARQ process, thereby releasing the buffer space. This dynamic parameter change resolves the contradiction by maintaining HARQ functionality only when necessary for reliability.
Solution Approach 2:
The patent implements discarding of HARQ process resources (buffer space) after successful transmission and recovering them for future use. The network device releases the HARQ process by sending indication information after successful data transmission, allowing the buffer space to be recovered and reused for subsequent transmissions, thus resolving the space occupation issue while maintaining reliability when needed.
2Productivity
If more HARQ processes are enabled, then efficiency of forward error correction is improved, but storage space in receiving device increases
Solution Approach 1:
The patent makes the HARQ process configuration dynamic rather than static. The network device adjusts the number of active HARQ processes based on actual transmission needs by sending indication information to disable processes after successful transmissions. This dynamic adjustment allows the system to maintain sufficient FEC efficiency when needed while minimizing storage space occupation during periods when fewer processes are required.
Data Source
AI summary
A hybrid automatic repeat request (HARQ) process disabling method, a receiving device, and a sending device in communication, the method including a receiving device obtaining indication data, where the indication data is used to indicate to disable a HARQ process, and the receiving device disabling the HARQ process.