UE Resource Acquisition via Pre-configured Contention Opportunity Sets
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication systems, the existing methods for User Equipment (UE) to acquire resources are inefficient due to high signaling overhead, processing delay, and resource utilization issues, particularly in scenarios like Massive Machine Communication where many UEs contend for resources, leading to contention conflicts and decreased utilization efficiency.
Innovation Solution
A method and apparatus that allow UE to acquire a resource request index and a contention opportunity set, determine the number of maximum contention times, and participate in contention using these parameters to reduce contention conflicts, signaling overhead, and delay, thereby improving resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UE acquires resource through network scheduling grant, then resource allocation is controlled, but signaling overhead and processing delay increase
Solution Approach 1:
The network pre-configures multiple contention opportunity sets and their corresponding mapping relationships with resource request indexes before UE needs to send data. This preliminary configuration eliminates the need for real-time scheduling grants, reducing processing delay while maintaining controlled resource allocation through the pre-established mapping relationships.
Solution Approach 2:
The contention opportunity set is divided into multiple subsets, each associated with different resource request indexes. This segmentation allows UE to directly select the appropriate subset based on its data transmission needs, avoiding the need for network scheduling intervention and reducing signaling overhead.
2Reliability
If network contends for resource on unlicensed carrier, then resource acquisition is achieved, but resource utilization efficiency decreases due to contention time
Solution Approach 1:
The network performs resource contention in advance and pre-configures the contended resources as contention opportunity sets for UE. This preliminary action eliminates the need for repeated contention processes, ensuring reliable resource acquisition while significantly improving resource utilization efficiency by avoiding repeated contention delays.
3Adaptability or versatility
If multiple UEs contend for same opportunity, then resource sharing is enabled, but collision probability increases and utilization efficiency decreases
Solution Approach 1:
The contention opportunity set is segmented into multiple subsets, each mapped to specific resource request indexes. This segmentation distributes multiple UEs across different subsets, reducing the probability of collision while enabling resource sharing. Each UE selects subsets based on its specific needs, achieving both adaptability and reduced collision risk.
4Reliability
If network sends uplink grant at subframe n+1 after contention at subframe n, then scheduling is achieved, but data transmission is delayed until subframe n+5 or later
Solution Approach 1:
The network pre-configures contention opportunity sets and their mapping relationships with resource request indexes before UE needs to transmit data. This preliminary configuration eliminates the scheduling delay chain (contention at n, grant at n+1, transmission at n+5), enabling UE to directly access pre-configured resources and significantly improving data transmission speed while maintaining scheduling control through the pre-established mappings.
Data Source
AI summary
The present disclosure provides a method and an apparatus for acquiring a resource. Herein, the method includes the following steps: acquiring a resource request index and a contention opportunity set (100); acquiring a number of maximum contention times (101); determining a contention opportunity that UE participates in contention according to the acquired resource request index, the contention opportunity set and the number of the maximum contention times; and acquiring a resource for sending data by using the contention opportunity (102). By means of the present disclosure, since UE can participate in contention for the contention opportunity set only after acquiring information about the number of the maximum contention times, the problem of collision, i.e., contention conflict caused by a reason that a plurality of UEs contend for the same contention opportunity can be easily reduced.