ProSe Paging Mechanism for Idle Terminal Location Acquisition
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Solution Overview
Problem
There is a lack of a specific mechanism for supporting and controlling Proximity Service (ProSe) in wireless communication systems, particularly for obtaining location information from terminals in ProSe-based communication mechanisms.
Innovation Solution
A method for supporting ProSe in wireless communication systems involves a network entity receiving a location information request, transmitting a paging message to a terminal in an idle state, receiving a response message, and transmitting a second response message with location information, which includes configuring the network entity to perform or not perform packet services during paging and defining the paging message with specific information requests.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a paging message is transmitted to a terminal in idle state to obtain location information, then location information can be obtained for ProSe discovery, but additional signaling overhead and network entity burden are introduced
Solution Approach 1:
The paging message is enhanced to serve multiple functions: traditional paging notification plus location information request. The network entity uses the existing paging infrastructure to simultaneously wake up the terminal and request its location information, eliminating the need for separate signaling procedures and reducing overall network burden.
Solution Approach 2:
The network entity proactively sends a paging message with location information request before ProSe discovery is needed. This preliminary action ensures the terminal is awake and ready to provide location information when required, avoiding delays and reducing the need for repeated signaling.
2Reliability
If packet services procedure is performed during paging for idle terminal, then complete service setup is achieved, but communication efficiency is reduced due to unnecessary procedures
Solution Approach 1:
Instead of performing the complete packet services procedure during paging, the network entity performs only the necessary partial action of sending the paging message with location information request. This avoids unnecessary service setup steps while still achieving the required communication efficiency for ProSe discovery.
3Adaptability or versatility
If location information request is sent to terminal, then ProSe discovery capability is enabled, but terminal power consumption increases
Solution Approach 1:
The network entity sends location information requests periodically through paging messages only when ProSe discovery is needed, rather than continuously. This allows the terminal to remain in idle state and conserve power, activating only when necessary to provide location information for discovery purposes.
Data Source
AI summary
The present invention relates to a method and an apparatus for supporting a proximity service (ProSe) of a first network entity in a wireless communication system. More particularly, the present invention comprises the steps of: a first network entity receiving a request for location information related to a first terminal; transmitting a paging message to the first terminal when the first terminal is in an idle state; receiving a first response message corresponding to the paging message; and transmitting a second response message corresponding to a service request on the basis of the first response message.