Pre-Configured Uplink Resource Validation for Low-Signaling IoT Access
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently validating pre-configured uplink resources (PUR) for user equipment (UE) in next-generation networks, particularly for IoT devices with small data transmissions, leading to increased signaling and energy consumption.
Innovation Solution
A validation procedure is implemented for PUR occasions, involving timing advance (TA) validation and PUR validation, ensuring that UE capabilities are considered, and transmissions are performed only during valid PUR occasions within defined time windows, aligning with appropriate duplex modes and symbol configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional connection establishment procedure is used for uplink transmission, then transmission reliability is improved, but signaling overhead and energy consumption increase
Solution Approach 1:
The system performs preliminary validation of PUR occasions and timing advance values before actual uplink transmission. The UE validates PUR occasions based on downlink timing measurements and validates TA values based on uplink timing measurements, ensuring transmission reliability is pre-confirmed before energy-intensive transmission occurs
Solution Approach 2:
The UE autonomously performs validation procedures for PUR occasions and timing advance values without requiring network intervention. The device self-determines whether PUR occasions are valid based on downlink timing and self-validates TA values based on uplink timing, reducing signaling overhead while maintaining reliability
2Reliability
If traditional connection establishment procedure is used for uplink transmission, then transmission reliability is improved, but signaling overhead increases
Solution Approach 1:
The invention extracts and separates the validation functions from the traditional connection establishment procedure. The UE independently validates PUR occasions and TA values without requiring full RRC connection establishment, removing unnecessary signaling steps while preserving transmission reliability through targeted validation checks
Solution Approach 2:
Validation of PUR occasions and timing advance values is performed in advance before actual data transmission. This preliminary validation ensures reliability is confirmed upfront, eliminating the need for subsequent connection establishment signaling and reducing overall signaling overhead
3Manufacturing precision
If validation procedure is performed for each PUR occasion, then resource allocation accuracy is improved, but processing complexity increases
Solution Approach 1:
The UE performs validation only for PUR occasions that are actually needed for transmission, rather than validating all possible occasions. The device checks downlink timing for PUR occasions based on actual transmission requirements, and validates TA values only when needed, reducing processing complexity while maintaining resource allocation accuracy
Solution Approach 2:
Different validation approaches are applied to different PUR occasions based on their specific characteristics and requirements. The UE validates PUR occasions using downlink timing measurements when appropriate, and validates TA values using uplink timing measurements when needed, optimizing processing effort for each specific case
Data Source
AI summary
Aspects relate to validating a pre-configured uplink resource (PUR) occasion. For example, prior to using a PUR occasion for an uplink transmission, a user equipment (UE) may perform a validation procedure for the PUR occasion. A validation procedure for a PUR occasion may involve ensuring that the UE will be able to reliably transmit during the PUR occasion. A base station may send a PUR configuration to the UE that the UE can use for the validation procedure. The PUR configuration may include timing advance (TA) validation information and PUR validation information that depend on at least on capability of the UE.