Configured Grant Uplink Resources for Time-Sensitive Data
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing uplink transmissions, particularly for time-sensitive data that requires immediate processing to avoid survival time or delay sensitivity issues.
Innovation Solution
The system configures time-sensitive uplink resources at user equipment (UE) and base stations, allowing UEs to autonomously transmit critical data using these pre-configured resources without the need for additional scheduling requests.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional uplink scheduling is used where UEs request resources before transmitting data, then network resource management is simplified and interference is reduced, but time-sensitive data may exceed its survival time or delay budget before transmission
Solution Approach 1:
The base station pre-configures uplink resources for time-sensitive data transmissions before the UE actually has data to send. This preliminary allocation of resources ensures that when time-sensitive data arrives, the UE can immediately transmit without waiting for scheduling requests and grants, thus meeting strict delay budgets while maintaining network control over resource usage.
Solution Approach 2:
The system dynamically switches between traditional scheduled access and configured grant access modes based on data characteristics. For time-sensitive data, the system transitions to configured grant mode where resources are pre-allocated and can be used immediately, while for non-time-sensitive data, traditional scheduling is maintained. This dynamic adaptation allows the system to optimize for both reliability and delay depending on traffic requirements.
2Productivity
If UEs autonomously transmit time-sensitive data using pre-configured resources without scheduling requests, then transmission speed and reliability for time-sensitive data improve, but device complexity and network resource management complexity increase
Solution Approach 1:
The autonomous transmission capability using configured grants is applied selectively only to time-sensitive data traffic, while regular data traffic continues to use traditional scheduled access. This localized application of autonomy reduces the complexity burden to only the necessary components for time-sensitive handling, rather than requiring full autonomous operation for all traffic types.
Solution Approach 2:
The configured grant mechanism serves multiple functions: it provides pre-allocated resources for immediate transmission, maintains network control through base station configuration, and can be activated or deactivated based on traffic conditions. This multi-functionality allows a single mechanism to address both the need for fast autonomous transmission and the need for simplified resource management under varying conditions.
Data Source
AI summary
Enhancement of uplink transmissions with survival time or delay sensitive data is discussed. A set of time sensitive resources is preconfigured for one or more user equipment (UEs). A serving base station communicates an identification of the configured time sensitive resources to the UEs. Upon detection of time sensitive data for transmission, a UE may send a time sensitive scheduling request to the base station that indicates the UE will be transmitting time sensitive data on the configured resources. When shared amount multiple UEs, the serving base station may send availability signals to the other UEs when the configured time sensitive resources are being used by another UE and when the configured resources are available again. Other aspects and features are also claimed and described.