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Transcript of Heterogeneous network - How do mobile operators exploit different network together to enhance...
Heterogeneous network - How do mobile operators exploit different network together to enhance customer satisfaction and reduce operating cost.
Yao-Yu Li, Po-Tzung Wang, Ping-Wei Hsieh
OUTLINE
Introduction of heterogeneous network
Global advancements
Adoption trend
Mobility Management Challenges
Market analysis
Discussion and conclusion
CELLULAR SYSTEM
• Data traffic demand in cellular networks is increasing at an exponential rate.
• Link efficiency is approaching its fundamental limits.
• Cell splitting gains are significantly reduced.
• Site acquisition costs can get prohibitively expensive.
CELL’S SCENARIO
HETEROGENEOUS NETWORK
• One of the solutions to meet the demand.
• Think small instead of big.
• A combination with different technologies.
• It aims at providing the better coverage and capacity, also the high qualities user experience for customer.
HETNET TOPOLOGY
ADOPTION TRENDS
• Heterogeneous network have three major components.
- Macro cell - Small cell
- Network intelligence
MACRO CELL
• Multicarrier - available spectrum and re-farming of spectrum - a cost-efficient way to increase both coverage and capacity.
• Sectorization
MACRO CELL• Tilt optimization - It is low cost and a powerful optimization technique - the most direct impact on coverage and interference parameters of the network.
SMALL CELLS
• Mobile operators are shifting their focus on small cells to increase capacity.
SMALL CELLS
• Wi-Fi is already deployed as a small cell technology globally - major mobile operators like AT&T and Chunghwa Telecom
- very low cost and resolving the problem of data traffic
SMALL CELLS
• Apart from the capacity increase, small cells could include :
- Better latency
- In-building coverage
- Better cell-edge coverage
NETWORK INTELLIGENCE
• Network intelligence allows mobile operators to manage Wi-Fi access points
• Intel recently conducted a trail that added intelligence to smart cell
NETWORK INTELLIGENCE
NETWORK INTELLIGENCE
• There are two extremely benefits in this way
- mobile operator can cut the amount of traffic through backhaul
- user experience can be largely improved
NETWORK INTELLIGENCE
• Caching content
- predicting caching
- proactive caching
NETWORK INTELLIGENCE
• Transrating video
- the codec is transrated in a dedicated node at the edge and then decoded right at the small cell.
- the codec is transrated in a dedicated node at the edge and then decoded right at smartphone.
MOBILITY MANAGEMENT CHALLENGES
• In order to realize the coverage and capacity benefits• Complexity environments• Rapid Varying user equipments• Challenges
• Handover optimization• intercell interference coordination(ICIC)• backhaul provisioning• Self-organization
INTERCELL INTERFERENCE COORDINATION (ICIC)
• Unplanned Deployment• operators do not control neither the number nor the location
• CSG(closed subscriber group) Access• cell access is restricted and nonsubscribers are thus not always connected to
the nearest BS
• Power Difference Between Nodes• minimize interference -> connect to strongest cell• Macro cell dead
• Range Expanded Users
SELF-ORGANIZATION
• Cells often deployed without operator supervision• Self-configuration
• Automatically downloaded software
• Self-healing• Failure recovery or execute compensation mechanisms
• Self-optimization• Monitoring the network status and optimize
MARKET ANALYSIS
2012 2013 2014 2015 2016 2017 20180
2000
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10000
12000
14000
16000
18000
HetNet Market in estimated CAGR 62.22%
Mark
et
Wort
h
DISCUSSION & CONCLUSION
• Increase customer satisfaction and reduce operating cost.
• Macro cell can promote coverage and capacity.
• Adding intelligence to network.
DISCUSSION & CONCLUSION
• Amount of means of bolstering capacity
• Small cells of HetNet yield noticeable benefits for the network
• SON help improve network efficiency and effectiveness
THANKS FOR YOUR LISTENING.