D2D Resource Management via eNB Release Signaling
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Solution Overview
Problem
Current 5G communication systems face challenges in managing dedicated resources for Device-to-Device (D2D) communication, particularly in efficiently releasing allocated resources when they are no longer needed, which can lead to resource overload and inefficiencies, especially as users move between cellular areas.
Innovation Solution
A method and apparatus for managing D2D communication resources involve establishing a radio connection with an evolved NodeB (eNB) or User Equipment (UE) to allocate, use, and release resources efficiently, including maintaining a mapping table of allocated resources and broadcasting messages to release them when necessary, ensuring resources are reused or reallocated effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dedicated resources are allocated for D2D communication and maintained after radio connection release, then D2D communication continuity is improved, but resource overload and network inefficiency worsen
Solution Approach 1:
The eNB monitors the status of D2D resources allocated to UEs and implements a feedback mechanism by broadcasting release messages when resources should be freed. This allows the system to dynamically adjust resource allocation based on current network conditions, ensuring resources are released when no longer needed while maintaining continuity when required.
Solution Approach 2:
The patent implements dynamic resource management where D2D resource allocation transitions from static (maintained indefinitely after connection release) to dynamic (released when broadcast message received). This allows the system to adapt resource availability in real-time based on network conditions and UE mobility patterns.
2Productivity
If D2D resources are released immediately after radio connection release, then resource efficiency is improved, but D2D communication reliability worsens
Solution Approach 1:
The eNB broadcasts a release message to UEs in advance before actually releasing the D2D resources. This preliminary notification allows UEs to prepare for resource release while the resources remain allocated and usable, ensuring seamless transition and maintaining communication reliability during the handover or connection state change.
3Adaptability or versatility
If D2D resources are allocated for extended periods after connection release, then user mobility between eNB areas is supported, but network resource management complexity increases
Solution Approach 1:
The system implements self-service resource management where the eNB autonomously monitors resource usage and automatically broadcasts release messages when resources are no longer needed. This eliminates the need for complex manual resource management procedures while supporting user mobility, as the system self-adjusts based on current network state.
Data Source
AI summary
The present disclosure relates to a communication method and system for converging a fifth generation (5G) communication system for supporting higher data rates beyond a fourth generation (4G) system with a technology for Internet of Things (IoT). The present disclosure applies to intelligent services based on 5G communications technology and IoT related technology, such as a smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, and security and safety services. A method for managing resources for Device to Device (D2D) communication includes: establishing a radio connection with an evolved NodeB (eNB); receiving allocated resources for D2D communication from the eNB through the radio connection; performing the D2D communication by using the allocated resources in an idle state after the radio connection is released; and responsive to receiving a message from the eNB indicating a release of the allocated resources, releasing the allocated resources.