Device Discovery Information Structure for D2D Communication Diversity
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Solution Overview
Problem
Current Device-to-Device (D2D) communication technologies face challenges in meeting the requirement for communication diversity due to the limited information contained in device discovery messages, which only include identifiers, failing to effectively support various D2D communication modes.
Innovation Solution
The method involves sending and receiving device discovery information that includes both UE identification information and attribute information, such as D2D discovery IDs, attribute update counts, capability profiles, and state information, allowing UEs to determine the suitability for D2D communication based on preset conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If device discovery information only contains UE identification information, then the discovery process is simple and fast, but the ability to meet diverse D2D communication requirements is insufficient
Solution Approach 1:
The device discovery information is segmented into multiple fields: UE identification information (for basic identification), attribute information (for capability description), and relationship information (for connection status). This segmentation allows the system to maintain simplicity for basic identification while adding complexity only when needed for diverse communication modes, resolving the contradiction between adaptability and device complexity.
Solution Approach 2:
The patent adds new dimensions to the discovery information structure by introducing attribute information and relationship information fields. These additional dimensions enable the system to represent diverse D2D communication modes (direct communication, relay communication, network-assisted communication) without replacing the basic identification functionality, thus improving adaptability while maintaining operational simplicity.
2Reliability
If device discovery information includes comprehensive UE attribute information, then D2D communication effectiveness is improved, but the information processing complexity increases
Solution Approach 1:
UE capability information is prepared and included in advance within the device discovery information. This preliminary action allows receiving UEs to pre-evaluate compatibility and suitability before initiating full communication procedures, improving effectiveness by filtering appropriate partners early while reducing processing complexity by avoiding unnecessary detailed analysis of unsuitable candidates.
Solution Approach 2:
The patent implements a feedback mechanism where UEs exchange device discovery information, evaluate compatibility based on preset conditions, and adjust their communication behavior accordingly. This feedback loop enables effective D2D communication by allowing UEs to learn from the attribute information exchanged and make informed decisions about communication mode selection, thereby improving reliability without requiring excessive processing complexity.
Data Source
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AI summary
The present application relates to a method for receiving device discovery information, comprising receiving, by a first User Equipment (UE) device discovery information sent by second UE, wherein the device discovery information comprises UE identification information and UE group information; and performing, by the first UE, Device-to-Device (D2D) discovery in response to the first UE belonging to the same group identified by the UE group information. The present application also relates to a respective UE.