Random Access Resource Segmentation for Paging Congestion
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Solution Overview
Problem
In LTE and 5G wireless communication systems, the large number of User Equipments (UEs) being paged in a single Paging Frame (PF) leads to network congestion due to limited random access resources, as many UEs initiate random access procedures after receiving paging messages.
Innovation Solution
The proposed solution involves determining random access control information associated with paging messages, which allows UEs to identify optimal random access resources, thereby reducing congestion by distributing UEs unequally across different Paging Occasions (POs) and prioritizing random access procedures based on UE IDs or predefined rules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a large number of UEs are paged in a single paging time unit, then the paging capacity is improved, but network congestion occurs due to limited random access resources
Solution Approach 1:
The patent segments the random access resources into multiple groups, where each group is associated with a specific paging message. This segmentation allows UEs to access different random access resource groups based on their paging messages, thereby distributing the random access load and avoiding network congestion while maintaining the ability to page a large number of UEs.
Solution Approach 2:
The patent introduces a new dimension for random access resource allocation by associating different random access resource groups with different paging messages. Instead of all UEs competing for the same random access resources, the system creates multiple dimensions of resource access based on paging message identification, effectively increasing the available random access capacity.
2Device complexity
If UE IDs are uniformly distributed across paging time units, then the distribution is simple and manageable, but the capacity to page more UEs in specific paging time units is limited
Solution Approach 1:
The patent applies local quality by allowing different paging time units to have different numbers of UE IDs distributed, rather than a uniform distribution. This enables the system to concentrate more UE IDs in paging time units that require higher paging capacity, while maintaining simpler distribution in other time units, thus optimizing overall paging efficiency without excessive complexity.
3Speed
If multiple random access procedures are initiated simultaneously, then the access speed is improved, but the limited random access resources cause congestion and delays
Solution Approach 1:
By segmenting random access resources into multiple groups associated with different paging messages, the patent enables simultaneous random access procedures to use different resource groups. This segmentation prevents resource conflicts and congestion, allowing multiple UEs to access the network simultaneously without causing delays.
Solution Approach 2:
The patent introduces random access resource group identification as an intermediary mechanism that mediates between multiple UEs seeking simultaneous access. This intermediary allows the system to manage and coordinate simultaneous access requests by directing them to appropriate resource groups, thereby maintaining high access speed while avoiding congestion.
Data Source
AI summary
A method and device for random access method and device are provided. The method includes: User Equipment (UE) receives a paging message from a network; the UE determines random access control information associated with the paging message; the UE determines a random access resource according to the random access control information; and the UE initiates a random access procedure based on the random access resource.