Pre-Configured RAN Allocation for Non-Periodic Low-Latency Traffic
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Solution Overview
Problem
Current techniques for dynamic and grant-free resource allocation in 5G/NR networks are inadequate for low-latency communication with non-periodic traffic patterns, particularly for services requiring high data rates and irregular data transmission/reception patterns.
Innovation Solution
Implementing methods for user equipment (UE) and radio access network (RAN) to manage resource allocation with dedicated or group allocations, using indications and rules to determine transmission/reception occasions, including bitmaps and UE identifiers, and applying default rules when explicit indications are absent.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If dynamic resource allocation is used for non-periodic traffic, then resource flexibility is improved, but communication latency increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring resource allocations for multiple occasions before the actual data transmission occurs. The network node provides a resource allocation that includes resources during a plurality of occasions in advance, and the UE is subsequently provided with indications about whether to transmit/receive during these pre-configured occasions. This eliminates the need for real-time dynamic scheduling decisions, thereby reducing latency while maintaining flexibility for non-periodic traffic patterns.
Solution Approach 2:
The patent segments the resource allocation into discrete occasions within the pre-configured allocation. Each occasion can be independently activated or deactivated through indications provided to the UE. This segmentation allows the system to flexibly allocate resources only when needed for non-periodic traffic while avoiding the latency of dynamic scheduling for each individual transmission.
2Speed
If grant-free resource allocation is used, then resource allocation speed is improved, but resource utilization efficiency deteriorates
Solution Approach 1:
The patent combines the speed of grant-free allocation with dynamic control by providing pre-configured resource allocations that can be dynamically activated or deactivated through indications. The network node can control UE transmissions during specific occasions within the pre-configured allocation based on actual traffic needs, achieving both fast resource allocation and efficient resource utilization for non-periodic traffic patterns.
3Reliability
If periodic resource allocation is used, then resource allocation reliability is improved, but adaptability to non-periodic traffic deteriorates
Solution Approach 1:
The patent applies local quality by allowing different portions of the pre-configured resource allocation to be activated or deactivated independently through indications. Instead of treating the entire resource allocation as uniformly periodic or non-periodic, the system can selectively enable resources for specific occasions based on the actual non-periodic traffic pattern, achieving both reliability and adaptability.
Data Source
AI summary
Embodiments include methods for a user equipment (UE) operating in a radio access network (RAN). Such methods include receiving a resource allocation to transmit or receive data in the RAN. The resource allocation includes resources during a plurality of occasions. Such methods include subsequently receiving one or more indications of whether the UE is allowed to transmit or receive during the occasions. Each particular indication is associated with a consecutive subset of the occasions subsequent to the particular indication. Other embodiments include complementary methods for a RAN node, as well as UEs and RAN nodes configured to perform such methods.