Priority Uplink Granting for Delay-Sensitive Logical Channels
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Solution Overview
Problem
Existing wireless communication systems struggle to efficiently handle delay-sensitive uplink transmissions, leading to potential downtime or failure states for applications that require timely data delivery.
Innovation Solution
A method and apparatus for wireless communication that involves a UE transmitting an uplink request with an indication of data sensitivity, receiving a priority-based uplink grant, and using a logical channel group with higher priority to transmit delay-sensitive data, thereby reducing latency and signaling overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If existing wireless communication systems use standard uplink transmission procedures, then system compatibility and protocol adherence are maintained, but latency increases and delay-sensitive data delivery fails
Solution Approach 1:
The patent segments the uplink transmission protocol into standard procedures and expedited procedures. The MAC layer is divided into standard logical channel handling and new delay-sensitive logical channel handling. This segmentation allows delay-sensitive data to follow a simplified, lower-latency path while maintaining compatibility with existing standards for non-time-critical traffic.
Solution Approach 2:
The patent implements preliminary action by pre-configuring priority indicators and logical channel identities for delay-sensitive data before transmission. The UE prepares the delay-sensitive data marking and priority information in advance, allowing the base station to immediately recognize and expedite the transmission without complex real-time analysis, thus reducing latency while maintaining protocol simplicity.
2Loss of energy
If existing systems transmit all uplink data through standard logical channel procedures, then comprehensive data handling is achieved, but signaling overhead increases
Solution Approach 1:
The patent applies local quality by introducing specific characteristics only where needed - delay-sensitive data packets include priority indicators and specific logical channel identities, while regular data uses standard procedures. This localized enhancement reduces overall signaling overhead because only time-critical packets require the additional markings, while maintaining versatility to handle both delay-sensitive and standard data flows.
Solution Approach 2:
The patent uses partial action by applying expedited handling only to delay-sensitive data rather than all uplink traffic. The system selectively marks and prioritizes only the necessary packets, avoiding the excessive signaling overhead that would result from applying complex priority handling to every data transmission, thus reducing energy consumption while preserving data handling flexibility.
3Loss of time
If existing systems use uniform priority handling for all logical channels, then simplicity is maintained, but delay-sensitive data experiences increased latency
Solution Approach 1:
The patent changes the parameter of logical channel priority from a uniform static value to a dynamic value based on data type. Delay-sensitive data is assigned a higher priority indicator and specific logical channel identity that triggers expedited handling. This parameter change enables faster delivery of time-critical data while maintaining simple uniform handling for standard traffic, effectively managing channel priority without excessive complexity.
4Reliability
If existing systems process all uplink requests through standard scheduling procedures, then resource allocation fairness is maintained, but delay-sensitive transmissions experience downtime
Solution Approach 1:
The patent implements preliminary action by pre-marking delay-sensitive data with priority indicators before transmission requests are generated. This allows the base station to immediately identify and expedite these packets in the scheduling phase, ensuring continuous application operation for time-critical services while maintaining efficient resource allocation. The preliminary marking prevents downtime by enabling proactive prioritization rather than reactive handling.
Solution Approach 2:
The patent introduces an intermediary mechanism in the form of priority indicators and specialized logical channel identities that mediate between standard scheduling procedures and delay-sensitive transmission requirements. This intermediary layer allows the base station scheduler to fairly allocate resources while automatically recognizing and expediting time-critical data, thereby maintaining application continuity without sacrificing overall transmission efficiency.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit, to a base station, an uplink request including an indication that data associated with the uplink request is delay sensitive. The UE may receive, from the base station, an uplink grant associated with a logical channel group including a logical channel for the data, wherein the logical channel group is associated with a higher priority than one or more other logical channel groups. The UE may transmit, to the base station and using the logical channel, the data, based at least in part on the uplink grant. Numerous other aspects are provided.