D2D Service Acquisition via Physical Identity Grouping
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Solution Overview
Problem
Existing methods for device-to-device (D2D) communication in wireless networks are inefficient due to the complexity of discovering serving devices, leading to increased battery life degradation and processing complexity, and are inflexible in adapting to changing service offerings or network conditions.
Innovation Solution
A radio network node groups physical identities of wireless communication devices into groups that map to specific service types, allowing devices to efficiently select and announce their service offerings without decoding entire higher layer system information, enabling dynamic adaptation to changing service proportions and network conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the beneficiary device receives and fully decodes the physical channel carrying system information from multiple D2D devices to determine service offerings, then the device can accurately identify available services, but the time required to determine an appropriate serving device becomes substantially long and battery life is degraded
Solution Approach 1:
The system segments service information into two parts: (1) a compressed indicator part transmitted in the physical channel that provides quick service type identification, and (2) detailed system information that is optionally decoded only when needed. This segmentation allows the beneficiary device to quickly identify available services through the compressed indicator without fully decoding all physical channels from multiple D2D devices, thereby reducing service acquisition time while maintaining accurate service identification.
2Loss of information
If the beneficiary device receives and decodes higher layer system information from multiple D2D devices to determine service offerings, then complete service information is obtained, but processing complexity and battery consumption increase substantially
Solution Approach 1:
The invention extracts the essential service identification information from the complete system information and transmits it in a compressed form in the physical channel. The beneficiary device only needs to process this extracted compressed indicator to determine service offerings, rather than processing the complete higher layer system information from multiple D2D devices. This extraction approach maintains service information completeness while substantially reducing processing complexity and battery consumption.
3Ease of manufacture
If the system uses a static association between device identity and service offering, then implementation is simple, but the system becomes inflexible and cannot adapt to changing service offerings or future service needs
Solution Approach 1:
The system replaces static identity-service associations with dynamic service indicators that can be updated independently of device identities. The compressed service information in the physical channel can be changed to reflect current service offerings without requiring changes to device identities or reconfiguration of the overall system. This dynamic approach maintains implementation simplicity while enabling flexible adaptation to changing service offerings and future service needs.
Data Source
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Figure 2
Figure 3A~3C
AI summary
42of 42 42 METHODS FOR SERVICE ACQUISITION IN DEVICE-TO-DEVICE OPERATION ABSTRACT In some embodiments, a radio network node operable to group physical identities being used or expected to be used by wireless communication devices under the control of the radio network node into one or more groups. At least one of the groups is mapped to one or more service types associated with device-to-device services being offered or expected to be offered by the wireless communication devices. The radio network node sends grouping information that indicates the physical identities and the service type(s) for each of one or more of the groups. FIGURE FOR PUBLICATION Applicant requests that FIGURE 2 be designated as the figure to appear on the front page of the publication with the abstract.