D2D Discovery Resource Segmentation for UE Interest Matching
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Solution Overview
Problem
Existing technologies face challenges in efficiently enabling device-to-device (D2D) communication and message exchange between user equipments running identical applications, particularly in reducing radio resource waste due to low interest matching probabilities.
Innovation Solution
The method involves using category 1 messages to deliver information for interest matching and category 2 messages to deliver additional information only when an interest match is found, optimizing radio resource usage by separating message types and sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all UEs transmit and receive messages in all resource regions, then message delivery coverage is improved, but radio resource waste increases due to low interest matching probabilities
Solution Approach 1:
The patent segments the message transmission process into two distinct categories: category 1 messages for interest matching information and category 2 messages for additional information. It also segments the resource regions into first resource regions for category 1 messages and second resource regions for category 2 messages. This segmentation allows UEs to selectively monitor only relevant resource regions based on their interest matching results, thereby reducing radio resource waste while maintaining reliable message delivery coverage.
Solution Approach 2:
The patent applies partial action by requiring UEs to monitor only specific resource regions rather than all resource regions. When a UE determines that its interest matching probability is below a threshold, it partially monitors only the first resource region for category 1 messages and skips the second resource region for category 2 messages. This partial monitoring approach reduces energy consumption and radio resource waste while still ensuring that important interest matching information is received.
2Speed
If category 2 messages are transmitted without interest matching verification, then message transmission speed is improved, but radio resource waste increases
Solution Approach 1:
The patent implements preliminary action by requiring UEs to first verify interest matching through category 1 messages transmitted in first resource regions before transmitting or monitoring category 2 messages in second resource regions. This preliminary verification step ensures that only UEs with matching interests proceed to category 2 message transmission, preventing wasteful transmissions to uninterested UEs while maintaining efficient message delivery speed for matched pairs.
3Loss of information
If UEs monitor all resource regions for all message types, then message reception completeness is improved, but energy consumption increases
Solution Approach 1:
The patent applies dynamics by making the monitoring behavior of UEs adaptive and dynamic rather than static. UEs dynamically adjust their monitoring strategy based on interest matching results: when interest matching probability is high, UEs monitor both first and second resource regions for complete message reception; when interest matching probability is low, UEs monitor only first resource regions to save energy. This dynamic adjustment ensures message reception completeness is maintained when needed while reducing energy consumption when not needed.
Data Source
AI summary
Provided are a discovery method and apparatus. A communication method for a user equipment (UE) may include: receiving first resource information indicating a first resource region and second resource information indicating a second resource region from an evolved Node B (eNB); receiving a first message from a second UE via the first resource region; checking whether the contents of the first message match the UE; and sending, when the contents of the first message match the UE, a second message associated with the first message to the second UE via the second resource region. A user equipment (UE) may include: a communication unit configured to receive first resource information indicating a first resource region and second resource information indicating a second resource region from an evolved Node B (eNB), and receive a first message from a second UE via the first resource region; and a control unit configured to check whether the contents of the first message match the UE.