Terminal Device Uplink Transmission SR Configuration Management
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Solution Overview
Problem
Current discussions on New Radio (NR) do not provide a clear definition of Scheduling Request (SR) configuration, making it challenging for terminal devices to effectively manage Physical Uplink Control Channel (PUCCH) resources for uplink transmission.
Innovation Solution
A method for uplink transmission where a terminal device receives SR configuration information from a network device, including a maximum number of transmissions for each SR, and processes PUCCH resources accordingly, determining release timing based on these configurations to manage resource allocation efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple SR configuration information are configured for the terminal device, then the terminal device can indicate different types of uplink authorization resources required, but the lack of clear SR configuration definition makes it difficult to manage PUCCH resources effectively
Solution Approach 1:
The patent segments the SR configuration management by introducing separate maximum transmission counter mechanisms for each SR configuration. Each SR configuration (sr-ConfigIndex) has its own sr-Transmax counter that independently tracks transmission attempts, allowing the terminal to manage multiple SR configurations without complex interactions between them. This segmentation resolves the contradiction by enabling versatile resource indication while simplifying management through independent counter tracking for each configuration.
2Reliability
If the terminal device transmits SR multiple times to ensure reliable delivery, then the SR transmission reliability improves, but the PUCCH resource occupation time increases
Solution Approach 1:
The patent implements dynamic SR transmission management through the sr-Transmax counter mechanism. The counter dynamically tracks the number of transmission attempts for each SR configuration and automatically controls when to continue transmission versus when to release resources and initiate random access. This dynamic control ensures reliable delivery through multiple attempts when necessary while automatically releasing resources to avoid unnecessary time occupation, resolving the contradiction between reliability and time loss.
Solution Approach 2:
The sr-Transmax counter provides feedback control for SR transmission. After each SR transmission, the counter is updated and compared against the maximum threshold configured for that SR configuration. This feedback mechanism determines whether to continue using the PUCCH resource for SR transmission or to release it and switch to random access procedure, thereby balancing transmission reliability with efficient resource time management.
3Productivity
If the terminal device releases PUCCH resources when SR maximum transmissions are reached, then resource allocation efficiency improves, but the uplink transmission delay may increase due to random access procedure initiation
Solution Approach 1:
The patent prepares for the transition from SR transmission to random access by having the terminal device already configured with the appropriate procedures and parameters. When the sr-Transmax counter reaches its maximum value, the terminal can immediately release the PUCCH resource and initiate the random access procedure without delay. This preliminary preparation ensures that resource allocation efficiency is maintained while minimizing the transition delay, as the terminal is already in the correct state to execute the procedure.
Data Source
AI summary
Provided in an embodiment of the present invention are an uplink transmission method, and a terminal device capable of realizing uplink transmission at existence of multiple scheduling request (SR) configuration information items. The method includes: a terminal device receiving, from a network device, multiple scheduling request (SR) configuration information items, each SR configuration information item comprising a maximum transmission count of a corresponding SR; and the terminal device performing, according to the multiple SR configuration information items, processing of physical uplink control channel (PUCCH) resources corresponding to the multiple SR configuration information items.