Random Access Resource Grouping for Wireless Network Conflict Reduction
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Solution Overview
Problem
In IEEE 802.11ax wireless networks, the conflict between electronic devices performing uplink OFDMA-based random access (UORA) leads to inefficient use of radio resources, resulting in reduced network throughput due to multiple devices selecting the same random access-resource units.
Innovation Solution
An electronic device selects a radio resource for random access based on a group, determined by its MAC address and the number of groups, to reduce conflicts and improve resource efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If electronic devices perform UORA using the same resource unit based on arbitrary selection, then devices can access the network independently, but conflicts between devices increase and network throughput decreases
Solution Approach 1:
The patent segments the random access resource units into multiple groups (first group, second group, etc.) and assigns devices to different groups based on their identifiers. This segmentation prevents all devices from selecting the same resource unit simultaneously, thereby reducing conflicts while maintaining independent access capability. Each group has dedicated resource units that do not overlap with other groups, ensuring conflict-free access within each segment.
2Adaptability or versatility
If electronic devices arbitrarily select random access-resource units, then device autonomy is maintained, but radio resource efficiency deteriorates due to wasted RA-RUs
Solution Approach 1:
The patent applies local quality by assigning different selection rules to different device groups. Devices in the first group select from first-group resource units while devices in the second group select from second-group resource units. This localized resource allocation ensures that each group efficiently utilizes its designated resources without causing conflicts, thereby improving overall radio resource efficiency while maintaining device autonomy within each local context.
Data Source
AI summary
Disclosed is an electronic device including: a communication circuit, a processor operatively connected to the communication circuit, and a memory operatively connected to the processor. The memory may store one or more instructions that, when executed, cause the processor to control the electronic device to: receive a signal including resource information for random access from an external electronic device using the communication circuit, determine random access corresponding to the received signal based on a value of a specified counter, identify a group to which the electronic device belongs based on an address of the electronic device and a number of groups of electronic devices for random access, and transmit a signal for random access to the external electronic device using a resource unit corresponding to a group of the electronic device among a plurality of resource units indicated by the resource information for random access, based on a random access determination.