Contention-Based Resource Partitioning for Wireless Network Latency
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Solution Overview
Problem
Current wireless communication systems, such as LTE, face inefficiencies in managing contention-based uplink resources, particularly for devices with low-activity traffic patterns, leading to increased latency and resource overload due to the scarcity of dedicated resources and high likelihood of collisions in contention-based channels.
Innovation Solution
The method involves partitioning contention-based resources into multiple partitions based on preconditions such as device state, traffic events, or application characteristics, allowing user equipment to select appropriate resources for random access attempts, thereby optimizing resource allocation and reducing latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If contention-based channels are used for uplink resource transmission, then resource allocation flexibility is improved, but collision probability increases and transmission reliability deteriorates
Solution Approach 1:
The patent segments the contention-based uplink resources into multiple partitions, each dedicated to specific traffic types or device categories. This segmentation reduces collision probability by distributing devices across different resource partitions while maintaining the flexibility of contention-based access. Each partition operates independently, allowing devices to select appropriate partitions based on their traffic characteristics.
2Reliability
If dedicated uplink resources are allocated to each UE, then transmission reliability is improved, but resource utilization efficiency deteriorates due to resource waste during inactivity periods
Solution Approach 1:
The patent implements a dynamic resource allocation mechanism where devices can switch between dedicated resources and contention-based partitions based on their current traffic state. When traffic is active, devices use dedicated resources for reliable transmission; when inactive, they release dedicated resources and utilize contention-based partitions, thereby optimizing resource utilization efficiency while maintaining transmission reliability when needed.
Solution Approach 2:
The patent applies different resource allocation strategies to different devices based on their local traffic characteristics. Devices with steady traffic patterns receive dedicated resources for reliable transmission, while devices with sporadic traffic patterns utilize contention-based partitions. This localized quality approach ensures each device receives the appropriate resource type for its specific needs, optimizing both reliability and efficiency.
3Device complexity
If contention-based resources are shared among all UEs, then resource allocation simplicity is improved, but latency increases due to collisions and retransmissions
Solution Approach 1:
The patent segments contention-based resources into multiple partitions organized by traffic type, device category, or priority level. This segmentation reduces latency by preventing collisions between devices with different traffic characteristics. Devices can directly select the appropriate partition based on their traffic profile, avoiding the random access collisions that cause delays in traditional shared contention-based systems.
Solution Approach 2:
The patent implements preliminary classification of devices and their traffic patterns before resource allocation. By pre-categorizing devices into different groups based on their traffic characteristics and assigning them to specific contention-based partitions, the system eliminates the need for random access attempts and retransmissions, thereby reducing latency while maintaining relatively simple allocation procedures.
4Stability of the object's composition
If RAN overload control mechanisms are implemented, then network stability is improved, but service quality for legitimate users deteriorates due to blanket restrictions
Solution Approach 1:
The patent applies differential resource allocation where different devices receive different levels of resource guarantees based on their traffic characteristics and network conditions. During overload situations, the system can restrict contention-based access for specific device categories or traffic types while maintaining dedicated resource allocation for priority devices. This localized quality approach maintains network stability through selective control while preserving service quality for legitimate users who require it.
Data Source
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AI summary
Methods and network elements partitioning at least a subset of contention based resources for random access attempts into a plurality of partitions, wherein each of said plurality of partitions is associated with at least one precondition governing selection of a partition, the precondition being derived from at least one of: source of causation for the random access attempt, a device state, a device event, a device group, a traffic event, a traffic class, or an application characteristic, and wherein each of said plurality of partitions is further associated with at least one configuration parameter; and communicating configuration parameters for the plurality of partitions and preconditions governing partition usage to at least one of a plurality of user equipments. Also, methods, devices and network elements for communicating on partitions.