Group Common Scheduling Requests for Low-Latency UE Access

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Solution Overview

Problem

In wireless communication systems, especially for latency-sensitive applications like extended reality (XR), the use of individual scheduling requests (SRs) leads to increased latency and resource wastage due to collisions and inefficient resource allocation, particularly when multiple user equipments (UEs) contend for the same resource.

Innovation Solution

Implementing a group common SR resource where multiple UEs share a smaller number of resources, reducing the probability of collisions and conserving signaling resources by using a group common uplink resource for SR transmission.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If individual scheduling requests are used for each UE, then each UE can have dedicated resource allocation, but resource wastage increases due to collisions and inefficiency when multiple UEs contend for the same resource

Engineering Contradiction:

ImproveSR transmission reliabilityVSAvoidsignaling resource wastage

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

Multiple UEs are grouped together and share common scheduling request resources. UEs within a group transmit SRs on shared uplink resources rather than dedicated individual resources, reducing total resource consumption while maintaining reliable transmission through group-based coordination and collision avoidance mechanisms.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

Common SR resources are designed to serve multiple UEs simultaneously. The same uplink resource can be utilized by any UE within the configured group, making the resource universal and multi-functional, thereby improving resource utilization efficiency and reducing signaling overhead.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Productivity

If multiple UEs share common SR resources, then resource allocation efficiency improves, but collision probability increases among UEs

Engineering Contradiction:

Improveresource allocation efficiencyVSAvoidSR transmission success rate

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The system segments UEs into multiple groups, each with its own common SR resources. This segmentation divides the contention pool, reducing the number of UEs competing for each specific resource. Within each group, UEs share resources, but the overall collision probability is reduced by having multiple segmented groups rather than a single large contention pool.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The network configures SR resources and group memberships in advance before UEs need to transmit scheduling requests. This preliminary configuration establishes predetermined resource allocation patterns and group structures that prevent random collisions, allowing UEs to follow predefined transmission rules that reduce conflict probability while maintaining efficient resource sharing.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS20260032668A1Group common resource for scheduling requests

Publication Date: 2026.01.29 QUALCOMM INC

AI summary

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a grant associated with a group common scheduling request (SR) resource. The UE may transmit an SR based at least in part on the UE belonging to a group associated with the group common SR resource. Numerous other aspects are described.