Bezdrátová komunikace pro hlas a data
Jan Kodad, ISSS Hradec Králové, 5. duben 2005
GSM – main principles
Speech compression
Timeslots
Cells & Frequencies
Uplink & Downlink
Base Stations
PCM30
Voice & Signalling channels
Location Update
Handover
© Siemens 11-2004 2
GSM – network summary
HLR
A
BSS
MSC / VLR
GMSC
PSTN /
ISDN /
PLMN
© Siemens 11-2004 3
GSM - Data
Restricted
user data rate
9.6 kbit/s
Long call
setup time
Volume dependent
charging
is not available
HLR
A
BSS
Restricte
d
number
of users
MSC / VLR
GMSC
PSTN /
ISDN /
PLMN
IP
Network
No efficient
resource management
© Siemens 11-2004 4
GPRS – main principles
Packet Data Transfer (IP)
Timeslot Bundling
Higher bit-rates
Timeslot sharing
New Network Infrastructure (IP)
Can also be used for UMTS
© Siemens 11-2004 5
GPRS
GPRS
„Always
on“
Flexibility in
charging
Shared access to
the same channel
MSC / VLR
Efficient
resource
management
GMSC
PSTN /
ISDN /
PLMN
A
BSS
Gb
Higher bitrates with:
l channel bundling
l channel coding
SGSN
Packet
oriented
IP
Network
GGSN
Direct
access
© Siemens 11-2004 6
© Siemens, 2002
GPRS – bit rates
CS-1
CS-2
CS-3
CS-4
9,05 kbit/s
13,4 kbit/s
15,6 kbit/s
1-8
channel
Up to
171,2 kbit/s
(theoretically)
21,4 kbit/s
Coding
Schemes
© Siemens 11-2004 7
UMTS – high bit rates
UTRAN:
Max. data rate
1920 kbit/s
EDGE:
473 kbit/s
GPRS:
171 kbit/s
HSCSD:
115 kbit/s
GSM
No new network
elements;
SW modifications
Phase 1/2:
9.6 kbit/s
4 / (8) x
14.4 kbit/s
New network
elements & protocol
architecture:
Prerequisite
for UMTS!
8x
21.4 kbit/s
No new network
elements; only
modifications to
the modulation
method
New
transmission
principles
(WCDMA),
network
elements &
protocols
8 x 59.2 kbit/s
© Siemens 11-2004 8
UMTS – main principles
High bit-rates
CDMA
New radio access network
- Node-B
- RNC
- ATM
Soft handovers
Better voice quality
New services
© Siemens 11-2004 9
UMTS – zone concept
MSS
144 kbit/s
1000 km/h
Macro
Cell
Micro
Cell
144 kbit/s
384 kbit/s
500 km/h
120 km/h
Pico
Cell
max.
1920 kbit/s data rate
10 km/h
max.
speed
© Siemens 11-2004 10
HiPath Wireless Strategy
– Voice over Converged WLAN
• DECT remains cost effective solution for wireless voice
• Converged voice and data solutions will emerge on WLAN
Voice
VoIP
Wireless
Voice
Converged WLAN
IP Data
Wireless
Data
Voice
over
WLAN
Data
© Siemens 11-2004 11
Gigaset SL1 professional
Funkce
Podsvícený grafický displej s 5 řádky
Opakování volby pro posledních 10 telefonních čísel
Telefonní seznam pro až 200 jmen/čísel
Uživatelské rozhraní v 19 jazycích
Vibrační vyzvánění
Přípojka pro náhlavní soupravu
10 standardních a 16 polyfonních vyzváněcích melodií
Komfortní hlasité telefonování (full duplex)
Podsvícená tlačítka pro MWI a hlasité telefonování
PC rozhraní pro nahrání tel. seznamu, polyfonních melodií a pozadí
displeje
Vytáčení hlasem pro 23 záznamů
Podpora při zadávaní textu do tel. seznamu
© Siemens 11-2004 12
Gigaset S2 professional
Funkce
Nástupce Gigaset S1 professional
Hlasité telefonování
36 vyzváněcích tónů/melodií pro interní a externí volání
Uživatelské rozhraní v 19 jazycích
Opakování volby pro 10 různých naposledy volených čísel
Telefonní seznam až 200 čísel a jmen
Barevný podsvícený grafický displej s 5 řádky
Zobrazení loga na pozadí
Prosvětlené tlačítko pro hlasité telefonování a MWI
Zablokování sluchátka pomocí PIN (4 číslice)
Vytáčení hlasem až pro 30 záznamů
Kalendářní funkce pro budík a termíny
Snadný způsob vložení textu pro záznamy seznamu
Přípojka pro náhlavní soupravu
PC rozhraní pro nahrání tel. seznamu a melodií
© Siemens 11-2004 13
Deska SLC24
Mobile radio
network
Public
network
Hicom
300 H
BS
HiPath Manager
HiPath 4000
Výhody:
 Více základních stanic
 Více přenosných částí
BS
© Siemens 11-2004 14
Deska SLC24
Propojitelnost:
• 16 rozhraní master a 8 rozhraní slave UP0/E
• Integrace do Hicom 300E od V3.0 0.7 a výše
• Smíšená konfigurace s SLC 16
Zdvojení počtu SLC pro každý samostatný systém a v síti
Zdvojení počtu základnových stanic
Zdvojení počtu sluchátek
Old
Stand-alone Network
SLC
16
120
Base Station
256
1920
Handset
1008
7560
New
Stand-alone Network
32
511
512
8176
2500
32000
© Siemens 11-2004 15
HiPath Cordless Data (HCD)
Bezšňůrová datová komunikace pro mobilní datová koncová zařízení
prostřednictvím DECT
Brána
Hlas
IP
Hicom
300 E/H
HiPath 4000
Data
PCMCIA
© Siemens 11-2004 16
HiPath Wireless Strategy
Platform for Wireless Solutions and LifeWorks
Unified
domain
Wireline networks
Wireless networks
 Unifies wireless voice
and data domains
Applications
Public networks
Private networks
Wireless LAN is central to
Lifeworks
 Pervasive in all LifeWorks
domains
 Platform for wireless
solutions and applications
 HiPath Wireless Telephony
 “HiPath Wireless SIcurity”
Mobile
worker
Personal/
family
Home
office
Branch
office
Headquarters
Unified user experience
 Wireless Presence
 Survivable branch-office
solutions
© Siemens 11-2004 17
HiPath Wireless Portfolio
Converged WLAN within the HiPath Portfolio
Wireless Voice Data
Convergence
HiPath WL
WLAN Phones
OptiClient
(on WLAN data
devices)
HiPath
Comm.
Platforms
HiPath
Wi-Fi Access Points
HiPath Wireless Portfolio
• WLAN Phones / Soft-clients
• Access Points
Internet
• WLAN Controller
WAN
• Converged Wireless Services SW
Corresponding Com ESY Products
• HiPath Communication Platforms
Data
• HiPath Management and
Communication
Applications
HiPath
Product Integration
- Management
• Wi-Fi – Standards
- Applications
(Phones and Infrastructure)
• HiPath VoIP independent of
Voice
wired or wireless IP
Communication
• HiPath Management Integration
of HiPath equipment
HiPath
WLAN
• HiPath Applications Integration
PSTN
Controller
of WLAN mobility
© Siemens 11-2004 18
WLAN 11g Network Clients
Voice
Data
Video
Gigaset
USB Adapter 54
Gigaset Media Streamer
Gigaset
USB Stick 54
WLAN
VoIP
Miro
Handsets
Gigaset M250 TV dsl
Gigaset
PC Card 54
Gigaset
PCI Card 54
Dantes
Gigaset WLAN
Camera
© Siemens 11-2004 19
Entry Variant
Gigaset S35 WLAN
Voice
• basic call
- Black/white display
• Supplementary
services
• handsfree
Data
• SMS (if standard
ready)
• e-mail (without
attachments)
• rich telephone book
(transfer via PC-SW)
© Siemens 11-2004 20
High-End-Variant
Gigaset SL75 WLAN
- colour display
- integrated camera
- vibration ringer
Data
• rich telephone book
(transfer via PC-SW)
• Instant messaging (buddy
lists, presence, chat)
• SMS, EMS, Fast-MMS (if
standard ready)
Voice
• E-mail (jpeg attachments)
• basic call
• Further Features:
• Supplementary services
• handsfree
- Audio streaming
• Gigaset M34 USB
applications
© Siemens 11-2004 21
HiPath Wireless Portfolio
End-to-End Converged Wireless LAN
3rd Party
WLAN Clients
HiPath WLAN Phones and Clients
3rd Party Server 1.1
3rd Party
/ Legacy
HiPath
WLAN
HiPath
WLAN Access Points
WLAN
Clients
Access Points
optiPoint
WL2 professional
rd
for
3 party
APs Points
HiPath
Access
- CorNet IP version
• enables 3fast
handover
rd Party
/ Legacy
HiPath
WLAN Controller
- SIPAccess
version
Points
HiPath
Wireless
Controller
• dual-radio
802.11
a, b/g
HiPath
Real-Time
IP Communication
System
e2e
solution
w/ HiPath
APs
• available
with
internal
or
external
antenna
optiClient 130 V5.0
• available
w/ 4 Fast
or 2 Gigabit
ports
• plug-and-play
integration
with Ethernet
WLAN controller
Umbrella
HiPath
Management
•
Supports
up
to
200
APs
•
optional
with
RF-management
module
Network Management
Management
HiPath
Management
• Operates at wire speed
optiPocket
HiPath WLAN Services
• HiPath Wireless
Umbrella Convergence software
Data Applications and
Services
HiPath Real-Time
Communications Applications
optiPoint WL1 professional
optiPoint W1 professional
WLAN Design,
Security, Lifecycle Services
Network Management
Corporate IP Network
Corporate IP Network
© Siemens 11-2004 22
Enterprise-grade Voice over WLAN (VoWLAN)
Enterprise-grade VoWLAN Criteria:
End-user Quality and Performance
voice quality over the air and end-to-end quality of the service
Rigorous Security
encryption of air-interface and authentication / authorization
Seamless User Mobility
users want to roam freely through the Enterprise without interruption
High Availability and Reliability
this poses requirements on the WLAN infrastructure and devices
Low Total Cost of Ownership
is driven by installation and set-up, management and administration
© Siemens 11-2004 23
HiPath Wireless Architecture
HiPath Wireless
Convergence
Software
• Centrally manages
groups & user policies
• Centralized
moves/adds/changes
• Controls
traffic flow
Subnet
#1
IP Network
IP Network
HiPath Wireless
Controller
• Placed anywhere on an
IP network
• Routes IP traffic to and
from mobile users
• Manages user sessions
and policies
IP Network
WAN
Subnet #2
HiPath Wireless AP
• Placed anywhere on an
IP network
• Communicates to
WLAN Controller via IP
© Siemens 11-2004 24
Portfolio Features: Availability and Security
Availability Features
Session continuity
 Survival through Controller and network
outages
Redundant Wireless Controllers
 Ensures against Controller outage
 Redundant power supplies
Security Features
• 802.11 Security for Authentication/Encryption
 802.11i, WPA. TLS, PEAP, RADIUS
• Captive Portal
 Redirect to URL for authentication
• VPN Overlay
• Intrusion/Rogue AP detection
 Run in load sharing mode
Survives network failures
 Multiple interface support on Controller
TKIP/AES
Encryption
Wireless
Controller
 Full functioning router
Secure
Socket
Layer
VPN
Server
CheckPoint
Blue Ridge Networks
Radius
Server
IPSec,
L2TP,
Etc.
© Siemens 11-2004 25
HiPath WLAN Branch Office Solution
Local Traffic – Centralized Control
Control Traffic (Signaling)
Local Traffic
Headquarters
WAN Connection
Branch Office
Benefits:
 Centralized WLAN control across multiple remote offices
 Low WAN overhead – remote traffic stays local
 Plug and play deployment and configuration model
 Automated fail-over coverage among access points
 Traveling employees can access the same corporate resources
at remote sites
© Siemens 11-2004 26
Hospitality
© Siemens 11-2004 27
Děkuji za pozornost
jan.kodad@siemens.com