Multi-Resource Scheduling Requests for QoS-Aware Logical Channels
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Solution Overview
Problem
In 5G mobile communications systems, there is a lack of a mechanism for allocating uplink grants to logical channels that match their quality of service (QoS) requirements, leading to inefficient and delayed scheduling requests (SRs).
Innovation Solution
The UE is configured with SR configurations that include multiple SR resource configurations associated with logical channels, allowing it to transmit SRs on available physical resources, and an SR-prohibit timer is used to manage SR transmission to avoid resource waste and latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the network device allocates uplink grants without distinguishing transmission requirements of logical channels, then the allocation process is simple, but the QoS requirements of logical channels cannot be met
Solution Approach 1:
The patent applies local quality by associating different SR resource configurations with different logical channels based on their specific QoS requirements. Each logical channel can be configured with appropriate SR resources (such as different physical uplink control channel resources) according to its transmission characteristics and QoS needs, enabling differentiated service quality while maintaining manageable complexity through structured association relationships
2Device complexity
If the UE transmits SR on available physical resources without multiple SR resource configurations, then the system complexity is low, but the SR transmission latency increases
Solution Approach 1:
The patent implements preliminary action by pre-configuring multiple SR resource configurations for the UE before actual SR transmission is needed. These pre-configured resources include different physical uplink control channel resources that can be immediately activated when SR transmission is required, eliminating the need for resource allocation negotiations and reducing SR transmission latency while maintaining reasonable configuration complexity
3Reliability
If the UE resends SR after receiving no uplink resource grant due to normal transmission latency, then the network device can receive the SR, but transmission resources are wasted
Solution Approach 1:
The patent applies feedback by implementing an SR-prohibit timer mechanism that provides feedback control on SR retransmission behavior. When the UE transmits an SR, the timer is activated and prevents subsequent SR transmissions during its running period, avoiding unnecessary retransmissions that would waste resources. The timer duration is configured based on expected network response times, providing adaptive control that balances reliability and resource efficiency
Data Source
AI summary
A scheduling request (SR) configuration method and sending method, and a corresponding apparatus are provided, to resolve a prior-art problem of a scheduling request configuration method and sending method, and a corresponding apparatus. The scheduling request configuration method includes: receiving, by a user equipment (UE), control signaling sent by a network device, where the control signaling is used to configure, for the UE, an SR configuration associated with at least one logical channel and at least two SR resource configurations associated with the SR configuration, and the SR resource configurations indicate physical resources used to signal an SR associated with the at least one logical channel; and signaling, by the UE based on a physical resource indicated by one of the at least two SR resource configurations, an SR associated with one of the at least one logical channel.