Separate BSR Indication Coding for Wireless Delay Reduction
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Solution Overview
Problem
In wireless communications, the existing method for reporting buffer status reports (BSRs) by user equipment (UE) to network devices results in high communication delays, as the network device needs to decode coded transport blocks to determine if a BSR is sent, and this process is inefficient, especially when retransmitting data or handling multiple data services with strict latency requirements.
Innovation Solution
The proposed solution involves the terminal device separately coding data transport blocks and indication information, allowing the network device to directly learn whether a BSR is sent, thereby reducing communication delays by decoding the indication information, and enabling BSR reporting during data retransmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the network device decodes the coded transport block to determine whether the MAC protocol data unit carries the BSR, then the network device can accurately identify BSR presence, but the communication delay increases
Solution Approach 1:
The patent segments the transport block into separate coded blocks: one carrying data and another carrying the BSR indication information. This allows the network device to independently decode and check the BSR indication without needing to fully decode the entire transport block, thereby reducing processing time while maintaining accurate BSR detection.
Solution Approach 2:
The BSR indication information is prepared and transmitted in advance as a separate coded block before the main data transmission. The network device can immediately check this pre-prepared indication to determine BSR presence, eliminating the need to wait for and decode the entire transport block, thus reducing communication delay.
2Adaptability or versatility
If the UE includes BSR in the MAC protocol data unit along with logical channel data, then the BSR reporting function is achieved, but the processing complexity and decoding overhead increase
Solution Approach 1:
The patent divides the BSR reporting mechanism into two separate coded blocks: one for data transmission and another dedicated to BSR indication. This segmentation allows the network device to process the BSR indication independently through simpler decoding operations, reducing overall processing complexity while maintaining full BSR reporting functionality.
Solution Approach 2:
The BSR indication information is extracted from the MAC protocol data unit and transmitted as a separate coded block. This extraction enables the network device to quickly identify BSR presence without the complexity of parsing and decoding the entire MAC protocol data unit structure, thereby reducing decoding overhead while preserving BSR reporting capability.
3Productivity
If the network device dynamically allocates transmission resources based on BSR information, then channel utilization increases, but the time required for resource allocation decisions increases
Solution Approach 1:
The BSR indication information is transmitted in advance as a separate coded block, allowing the network device to pre-identify which UEs have BSR information before the main data reception. This preliminary identification enables faster resource allocation decisions while maintaining dynamic resource allocation based on actual BSR information, thus reducing resource allocation time without compromising channel utilization efficiency.
Solution Approach 2:
By segmenting the BSR indication into a separate coded block, the network device can quickly process and identify BSR presence for multiple UEs in parallel, accelerating the resource allocation decision-making process while still enabling dynamic resource allocation based on accurate BSR information, thereby maintaining high channel utilization with reduced allocation time.
Data Source
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AI summary
This application provides a data transmission method and apparatus. The method includes: coding, by a terminal device, a first transport block to obtain a first coded transport block, where the first transport block includes first data; coding, by the terminal device, indication information to obtain coded indication information, where the indication information is used to indicate whether the terminal device sends a first buffer status report BSR when the terminal device sends the first data, and the first BSR indicates a data amount of to-be-transmitted data currently buffered in a buffer of the terminal device; and sending, by the terminal device, the first coded transport block and the coded indication information to a network device. According to the data transmission method and apparatus provided in embodiments of this application, the network device can directly learn whether the terminal device sends a BSR, so as to reduce a communication delay.