Buffer Status Reporting via HARQ Feedback Multiplexing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing methods for reporting buffer status in communication systems, such as scheduling request (SR) and connected-state random access procedures, result in low efficiency and high resource overhead, particularly in scenarios like large file downloads and high-definition streaming media, due to the need for additional uplink grants and resource occupation.
Innovation Solution
A method where a terminal device generates first and second information based on buffer status and reception status, allowing direct reporting to a network device without additional uplink grants, reducing signaling overhead and latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the terminal device uses scheduling request or connected-state random access procedure to report buffer status, then the network device can allocate time-frequency resources for data transmission, but the reporting efficiency is reduced and resource overhead is increased
Solution Approach 1:
The patent combines buffer status information with HARQ feedback information into a single uplink transmission. The terminal device multiplexes the buffer status report with the HARQ acknowledgment/NACK signal, allowing both pieces of information to be transmitted simultaneously without requiring separate uplink grants. This merging approach eliminates the need for additional SR or RACH procedures, directly resolving the contradiction between reporting efficiency and resource overhead.
Solution Approach 2:
The uplink transmission channel is made multi-functional by enabling it to carry both HARQ feedback and buffer status information. The patent designs a mechanism where the same physical uplink resources used for HARQ acknowledgment can also convey buffer status reports, making the uplink channel serve multiple purposes simultaneously. This universality eliminates the need for dedicated buffer status reporting resources, reducing overall system overhead.
2Loss of information
If the terminal device obtains uplink grant through SR or RACH procedure to report buffer status, then the network device receives buffer status information, but time-frequency resources are occupied that could otherwise be used for data transmission
Solution Approach 1:
The patent merges buffer status information transmission with the existing HARQ feedback mechanism. By multiplexing these two functions into a single uplink transmission, the system eliminates the need for separate time-frequency resources for buffer status reporting. The terminal device can convey both HARQ acknowledgment and buffer status in one transmission, preventing resource occupation that would otherwise be available for data transmission.
Solution Approach 2:
The patent implements preliminary configuration where the network device pre-configures the terminal device with the capability to report buffer status information alongside HARQ feedback. This preliminary setup allows the terminal device to directly multiplex buffer status with HARQ in subsequent transmissions without requiring additional uplink grants, thereby preventing time-frequency resource occupation.
3Productivity
If the terminal device reports buffer status through additional uplink grants via SR or RACH, then the network device can allocate resources for data transmission, but signaling overhead and latency are increased
Solution Approach 1:
The patent combines buffer status reporting with HARQ feedback transmission, eliminating the need for separate uplink grant acquisition steps. The terminal device multiplexes both functions into a single transmission, which directly reduces signaling latency and improves data transmission efficiency by removing the time-consuming SR or RACH procedures.
Solution Approach 2:
The patent extracts the buffer status reporting function from the separate uplink grant acquisition process and integrates it into the HARQ feedback transmission. By taking out the buffer status information and combining it with the existing HARQ transmission, the system eliminates the latency introduced by additional signaling procedures while maintaining data transmission efficiency.
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
The present disclosure relates to the technical field of communication, and particularly to a method for reporting and reporting a buffer status, and related apparatuses. In this embodiment, the method includes: determining buffer status information to be reported; generating first adjustment information related to first information based on the buffer status information, and the first information is sent by a network device to the terminal device; generating second information based on a reception status of the first information and the first adjustment information; and sending the second information to the network device. In this way, when the buffer status is to be reported, the terminal device reports the buffer status to the network device along with the second information, which does not require an additional uplink grant, and reduces the signaling overhead and latency for reporting the buffer status, thereby improving the efficiency of reporting the buffer status and lowering the resource overhead of a communication system.