Unified ProSe Function for Multi-RAT Service Discovery
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Solution Overview
Problem
Current mobile communication networks lack integration of discovery mechanisms across different radio access technologies, such as LTE and Wi-Fi, leading to increased complexity in provisioning proximity services, as each technology requires separate servers and bit sequences for service access.
Innovation Solution
A method that enables user equipment (UE) to access proximity services by integrating discovery mechanisms across different radio access technologies, including LTE and Wi-Fi, through a network module that authorizes and adapts service codes for multiple radio interfaces, allowing UEs to use various radio access technologies for service discovery and provision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate discovery mechanisms are deployed for LTE and Wi-Fi technologies, then each technology can independently provide proximity services, but the device complexity and provisioning complexity significantly increase
Solution Approach 1:
The patent merges multiple discovery mechanisms (LTE ProSe and Wi-Fi NAN) into a unified architecture where a single ProSe function in the network and a single ProSe client in the UE coordinate discovery across different radio access technologies. This integration reduces provisioning complexity by eliminating the need for separate servers and applications for each technology while maintaining support for multiple RATs.
Solution Approach 2:
The ProSe function and ProSe client are designed with multi-functionality to handle both LTE and Wi-Fi discovery procedures through a single interface. The ProSe client receives discovery information from the network and adapts it for use across different radio access technologies, allowing one component to serve multiple purposes and reducing overall system complexity.
2Adaptability or versatility
If different bit sequences are allocated for the same service across different radio access technologies, then each technology can operate independently, but the quantity of information and provisioning complexity increase
Solution Approach 1:
The patent uses a copying approach where a single service identifier is allocated by the network and then copied/adapted for use across different radio access technologies. Instead of allocating separate bit sequences for LTE and Wi-Fi, the same service identifier is reused and appropriately formatted for each technology, reducing the quantity of information that needs to be managed and provisioned.
3Adaptability or versatility
If multiple servers and applications are deployed for different discovery mechanisms, then each discovery mechanism can be optimized independently, but the device complexity and resource usage increase
Solution Approach 1:
The patent combines multiple discovery mechanism servers into a single ProSe function in the network and multiple client applications into a single ProSe client in the UE. This unified architecture maintains the ability to optimize for different technologies while reducing the number of separate components that need to be deployed and managed.
Data Source
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AI summary
It is disclosed a method for accessing a proximity service in a mobile communication network comprising a network module and a user equipment (UE) comprising a primary radio interface configured to operate according to a first radio access technology providing connection to the network, and at least one secondary radio interface configured to operate according to at least one second radio access technology different from the first one. The network module is configured to communicate with the UE for enabling it to access the service. The method comprises: sending by the UE to the module a request message; at the module, generating an answer message adapted to enable access to the service by the UE over the primary radio interface; and converting the answer message into at least one further answer message adapted to enable access to the service by the UE over the at least one secondary radio interface.