Potential Research Directions and Solution Approaches
Abstract
Applications
Mobile Internet applications run on devices such as smartphones and tables Newer applications
Adaptive DRX Switching
Low-overhead Connected State
Potential Air Interface solutions to Save Device Power
• Always Connected with DRX
a. UE stays in Connected all the time
Impact
• Traditional applications •. Newer applications
• Impact on LTE device power and air interface signaling • A survey of solutions • Potential future research directions.
PPI can be an enabling basis to implement efficient DRX switching PPI may also assist the network in Fast Transition to Idle,
Potential Research Directions and Solution Approaches
DRX is triggered when a parameter known as DRX Inactivity Timer expires
Potential Air Interface solutions to Save Device Power
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Always Connected with DRX Fast Transition to Idle
• Comparison a. Low background traffic activity and high mobility b. Low mobility and low traffic activity
Solutions Adopted in 3GPP R 11
• Power Preference Indication (PPI)
Thank You
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The UE Assistance mechanism Multiple bits of PPI may need to be incorporated in future 3GPP releases so that UE can better inform the network. There will also be a focus on active traffic such as gaming and HTTP-based streaming.
b. Eliminating the signaling overhead of state transitions from Connected to Idle
• Fast Transition to Idle
a. UE indicates its desire to go to Idle state to the network b. The network sends the UE to Idle state without waiting for the RRC Inactivity Timer. c. A prohibit timer and an upper limit on the number
De-Registration
Device OFF
DeRegistered
eriod
No packet activiisting LTE Power Management Mechanisms in 3GPP R 8、9and10
Fast Dormancy（快速休眠） Without waiting for the RRC Inactivity Timer Discontinuous Reception (DRX)
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Abstract Introduction
Existing LTE Power Management Mechanisms
Potential Air Interface Solutions to Save Device Power
Solutions Adopted in 3GPP R 11
Energy Impact of Emerging Mobile Internet Applications on LTE Networks: Issues and Solutions
Maruti Gupta, Satish C. Jha, Ali T. Koc, and Rath Vannithamby, Intel Corporation
HTTP web browsers
and FTP
Existing LTE Power Management Mechanisms in 3GPP R 8、9and10
Registered
Packet activity incoming or outgoing RRC Connected Registration
Abstract
Introduction
Battery Lifetime distinct Active and Inactive sessions Facebook
Newer Traditional applicationsApplications Distinct Active and Inactive sessions