2008 Asia-Pacific Members’ Meeting & ConferenceSeptember 22-23, 2008

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ConvergenceConvergenceHow to build a converged hotel networkHow to build a converged hotel network

Ruxiang JinRuxiang JinNetwork ConsultantNetwork Consultant

Hotel wiringNetwork architectureNetwork technology Network upgrade Performance, Cost

Ruxiang JinNetwork consultant for HSH. Over 20 years of experience in telecom/networking industry. Worked as professor/CEO/CTO at universities, government labs, and high tech companies. Designed and built various national backbone, metro, access, and last-mile networks. Chaired Asia communications conference (AOE) and European communications conference China site (ECOC). Over 70 publications/patents.

Ask not what is available from vendors, ask what you want.

Infrastructurewiring: fiber (FTTR), fiber+RJ45, RJ11, coax

Architecturenetwork topology: tree (coax), star, mixture

How to build converged network on existing infrastructureon fiber networkon RJ45/RJ11 networkon coax network

TechnologiesVLANEPONWDMEOC

Challenges Faced by Hotel Network OperatorsHow to chase fast moving targets

1. Increased Diversity of Network Services

2. Network Security

3. Scalability in Bandwidth

4. Quality and Reliability of Service

5. Cost of Operation and Maintenance

6. Future

Existing ServicesAnalog/Digital TVFixed/Mobile Phone Broadband InternetVideo SurveillancePMSRoom Control (lighting, air conditioning, etc)VODBackground Music

New ServicesIPTV (personalized TV service)Internet Radio (personalized radio service)VOIP (free calls, calls to PC, etc)HDTV

WiFi Phone/Video (watch video anywhere, anytime)Video Conferencing……

Increased Diversity of Network Services

Hotel Multimedia Network System Should ServiceHotel Multimedia Network System Should ServiceThree Major Displays: TV, PC, CellphoneThree Major Displays: TV, PC, Cellphone

Watching CNN using wireless laptop and cellphone at cafe:

Interactive Multimedia Network Demands Interactive Multimedia Network Demands Huge BandwidthHuge Bandwidth

Quantifying bandwidth requirementsQuantifying bandwidth requirements

0

1

2

3

4

5

6

7

8

9

10

Ban

dw

idth

(M

bp

s)

Voi ce WebBrowsi ng

MPEG-4Vi deo

MPEG-2Vi deo

CompressedHD Vi deo

Appl i cati on

Bandwi dth Requi rement

Expect >3 video screens per room soon!

IPTV Stream （ 2M ， DVD ）

HD IPTV Stream （ 8M ， HDTV ）

Effective bandwidth per room: Much higher BW than web browsing!

Internet bandwidth per room: 0.5M

10X expansion ：

Converged Network Architecture Considerations

Major Trends/Assumptions:

Everything digitalEverything over IP (IPTV, VOIP, all control, data)Bandwidth requirement always going upCost of copper/cost of fiber keeps going upTV will become a personalized media

Converged Network Architecture Considerations

Keep things simple!

Existing Hotels:

Fiber to floor, copper to roomStar topology for fiberStar topology for RJ-45Tree topology for coax with CBA

New Hotels:

Fiber all the way (to room)Some copper for backup

Optical Fiber Cable(no re-wiring needed in the next 100 years)

Takes less space than other wiring,and provides much higher bandwidth.

Single Mode vs Multimode Fiber

Multimode:50/125 or62.5/125

Single mode:9/125

Signal Loss in Single- vs Multimode Fiber

Single Mode:

Multimode:

Modal Dispersion in Multimode Fiber(dispersion limits data rate and degrades SNR)

Conclusion: Use Single Mode Fiber

Single mode fiber performs much better in terms of bandwidth, signal-to-noise, attenuation, etc.

Single mode systems are much easier to design in terms of optical power budget, bandwidth, range of components, etc.

Most important technology developed over the past 10 years, including WDM and PON, are all based on single mode.

Single mode costs less than multimode now, removing the only reason for multimode.

Network Wiring Topology Considerations

CO

Room

Room

Room

Room

Star (Cat-6 cable)

CO

Room

Room

Room

Room

Tree (coaxial cable)

Fiber Network Architectures

Ethernet Passive Optical Network (EPON)

EPON TDM

Wavelength Division Multiplexing (WDM)

Each wavelength travels independently in fiber.

WDM Technology

Fiber Network Architecture Example

All Passive Floor Distribution(passive = reliable)

Fiber-to-the-Room (FTTR)

Network capacity upgrade: using existing fiber plant, up to 16X capacity increase with increased network efficiency by constructing various logical network topologies.

IP-over-WDM

Simultaneous delivery of multiple analog and digital channels (analog/digital TV and data) with different protocols and data rates.

Mode conversion btw single mode and multimode fiber.

OPN: multiple isolated networks on the same fiber plant, physical layer security without adding wires, immune to hackers.

Can upgrade network by simple adding wavelength ports,without affecting existing services.

WDM + VLAN

Much better security and higher performance than VLAN.

WDM+VLAN Example

Automatic Protection Switching

Protection against:

equipment failureperformance degradationline break

Network recovers within milliseconds using optical switchNetwork recovers within seconds using soft switch

Automatic Protection Switching Examples

Active Floor ODF Bandwidth Calculation

For hotels with fiber to each floor, RJ-45 to each room:

Fast Ethernet switches with 1G uplink and 100M ports SD and compressed HD IPTV (with video surveillance):say 20M per room, 30 rooms per floor, 20 floors:

BW per floor = 600MSo 1G per floor is OK for compressed HD IPTV

50-100M per room will be needed in the next few years as the number of HD video screens increases.

Features: Simultaneous delivery of analog/digital/IPTV/Data in the same coaxial cable, without changing the existing cable plant, greatly simplifies SD IPTV deployment. Simple to install, plug-and-play, fast deployment, no re-wiring. 100M bandwidth shared among 10-20 rooms. Data port compatible with switches, routers, IP STBs, PCs, etc. Supports full and half duplex mode

Coaxial Broadband Adaptor for IPTV(Using existing coaxial cable plant)

Applications: Triple-play convergence, hotel network and service upgrade. Especially useful for older hotels that does not have RJ-45 to each room.

TV Channels (65-865 MHz)(downstream, QAM)

Data Channels (2-35 MHz)(bi-directional, OFDM)

Transforming Existing Cable TV Network into IP Network

Converting Coax Cable Network to IP Network

Fibers Do’s and Don’ts

For new installations, use single mode fiber

Always use mouse-protected cable

Use a secondary connector (disposable)

Do not bend too hard (glass will break!)

Do not look into fiber from connector end

VLANs

VLAN = Virtual LAN (broadcast domain created by switches)

Trunking protocol = ISL or 802.1Q

Reason to use VLAN: Higher performance by limiting broadcast packetsBetter securityBetter management

VLAN Application Example

Set all user ports to nontrunking

Deploy port security when possible for user port

Put DMZ servers into PVLANs

Configure VACL on primary VLAN

Use authentication for VTP

Disable all unused ports and put them in an unused VLAN

Some VLAN Do’s and Don’ts

Private VLANs(for better network security)

PVLAN Port Types

 Separation of ports without requiring a separate IP subnet for each device

Isolated ports can talk only to promiscuous ports

Promiscuous ports can talk to any port

PVLAN in DMZ can prevent attack to spread to many servers

PVLAN Features

PVLAN in DMZ

In DMZ:Servers should connect to isolated PVLAN portsRouters and firewalls should be connected to promiscuous ports

Use VACL – VLAN access control list

Limitation of PVLANs: PVLANs only works at Layer-2 so a router can route traffic btw isolated ports.

VACLs configured on primairy VLANs drops traffic with a source and destination address within the same subnet.

VACL has no performance penalty

Overcoming PVLAN Limitations

Lorica Network Example

Control4 Zigbee Control Panel

Network Management

NE management software integration

easy to operatepinpoint troublefast response to alarmsanticipate and prevent problemsreduce maintenance and operation costeasy network upgrade

Conclusion:Building a converged network is like cooking: all the ingredients we need are available today, we just have to know exactly what we want to deliver for the guests, and do it right within our budget.

Thank you.

Ruxiang JinTel: 011-86-13816516337 (China) 001-678-200-2224 (US)

Email: goldenmediaco@gmail.com

2008 Asia-Pacific Members’ Meeting & ConferenceSeptember 22-23, 2008

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