Proxy Transmission for User Equipment in Power Saving Mode
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Solution Overview
Problem
User equipment operating in power saving mode faces challenges in transmitting and receiving information due to reduced power consumption, leading to potential IP address reclamation and unnecessary transmission attempts by nodes, which can result in communication failures.
Innovation Solution
A method and apparatus that allow user equipment to request proxy transmission and reception services from network entities, enabling continued communication and address maintenance during power saving mode through specific messages and parameters exchanged between user equipment, mobility management entities, and service capability servers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If user equipment operates in power saving mode to reduce power consumption, then energy efficiency is improved, but the ability to transmit and receive information deteriorates
Solution Approach 1:
The patent introduces a Service Capability Server (SCS) as an intermediary that performs proxy transmission and reception for user equipment in power saving mode. The SCS receives information from external nodes and forwards it to the UE when the UE wakes up, eliminating the need for the UE to remain actively connected while maintaining communication capability.
Solution Approach 2:
The patent implements preliminary actions by having the UE send a power saving mode request message before entering power saving mode, and by having the network pre-configure the SCS with the UE's contact information and communication parameters. This ensures that the proxy mechanism is ready to operate immediately when the UE enters power saving mode.
2Use of energy by moving object
If user equipment remains in power saving mode for extended periods, then power consumption is reduced, but IP address reclamation occurs leading to communication failures
Solution Approach 1:
The SCS acts as a persistent intermediary that maintains the communication connection with external nodes while the UE is in power saving mode. The SCS holds the UE's IP address and communication context, preventing address reclamation by the network while the UE remains dormant.
Solution Approach 2:
The patent ensures continuity of useful action by having the SCS continuously monitor and forward messages to the UE during power saving mode. The system maintains an active communication path through the SCS, ensuring that communication can resume immediately when the UE wakes up without address reclamation issues.
3Productivity
If nodes attempt to send data to user equipment in power saving mode, then data delivery is attempted, but transmission failures occur due to UE unavailability
Solution Approach 1:
The SCS serves as a mediator that receives data from external nodes and intelligently forwards it to the UE based on the UE's power mode status. When the UE is in power saving mode, the SCS buffers the data; when the UE is active, the SCS forwards the data, ensuring high transmission success rates.
Solution Approach 2:
The patent implements feedback mechanisms where the UE notifies the network of its power mode status through power saving mode request messages, and the SCS uses this feedback to determine whether to buffer or forward data. This feedback loop ensures that transmission attempts are made only when the UE is available, eliminating unnecessary failures.
Data Source
AI summary
Provided are a method and apparatus for effectively exchanging information between nodes in a wireless communication system. A communication method for a user equipment (UE) may include: sending a mobility management entity (MME) a power saving mode request message containing information requesting a different network entity to perform proxy transmission and reception for the UE during power saving mode; receiving information indicating availability of power saving mode and corresponding parameters from the MME; and operating in power saving mode according to the received parameters. It is possible to provide an information transmission method for a user equipment remaining in power saving mode.