Location Information Encoding in Wireless Peer-Discovery Announcements
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current device-to-device (D2D) communication systems in wireless networks face challenges in efficiently providing accurate location information due to limited size and content constraints in expression announcements, which restricts the ability of receiver devices to determine the proximity and characteristics of announcing UEs beyond relative distance.
Innovation Solution
Incorporating Peer-Discovery (PD) information that includes both expression information and location information, where the location information is formatted to be included alongside the expression information in a data section of the announced PD information, allowing UEs to request and generate PD information that includes both types of data, and encode them using different secret codes for privacy, enabling authorized devices to decode the information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If expression announcements are kept size-constrained to accommodate many devices on licensed spectrum, then spectrum efficiency is improved, but location information accuracy and detail deteriorate
Solution Approach 1:
The patent segments location information into two parts: a compressed location identifier (e.g., cell ID, sector ID) that fits within the size-constrained expression announcement, and detailed location data that can be retrieved separately through targeted communication. This allows receiver devices to obtain sufficient location context without transmitting full location datasets, thereby maintaining spectrum efficiency while preserving location information accuracy.
Solution Approach 2:
The patent introduces an intermediary location identifier that acts as a reference key. Instead of transmitting complete location information in the expression announcement, the announcing device includes a compact location identifier that receiver devices can use to query additional location details through separate communication channels, thus balancing announcement size constraints with location information needs.
2Reliability
If private expressions are used to limit access to authorized UEs, then privacy is improved, but the ability of receiver devices to determine proximity and characteristics deteriorates
Solution Approach 1:
The patent applies different quality levels of information sharing to different receiver devices based on their authorization status. Authorized UEs receive both private expressions and associated location information, while unauthorized UEs receive only public expressions without location data. This local differentiation allows privacy protection for unauthorized devices while providing comprehensive proximity and characteristics information to authorized devices.
Solution Approach 2:
The patent changes the parameter of information completeness based on authorization status. For private expressions, the system transitions from a uniform information distribution model to a selective model where location information parameters (such as location identifier, accuracy level) are adjusted according to the receiver's authorization level, enabling both privacy protection and information availability.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A method, an apparatus, and a computer program product for wireless communication are provided in connection with providing location information with expression information announced in a wireless network. In one example, a UE is equipped with applications that can request announcement of an expression. In an aspect, the expression may be associated with expression information to be announced over the air. In an aspect, the request indicates to provide location information with the expression information during announcement. Further, the UE may be equipped to generate Peer-Discovery (PD) data including the expression information and the location information. In an aspect, the location information may be included along with the expression information in a data section of the announced PD data. Still further, the UE may be equipped to announce the PD data.