Download Motorola P25 Simulcast

Survey
yes no Was this document useful for you?
   Thank you for your participation!

* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project

page
1
page
2
page
3
page
4
page
5
page
6
page
7
page
8
page
9
page
10
page
11
page
12
page
13
page
14
page
15
page
16
page
17
page
18
page
19
page
20
page
21
page
22
page
23
page
24
page
25
page
26
page
27
page
28
page
29
page
30
page
31
page
32
page
33
page
34
page
35
page
36
page
37
page
38
page
39
page
40
page
41
page
42
page
43
page
44
page
45
page
46
page
47
page
48
page
49
page
50
page
51
page
52
page
53
page
54
page
55
page
56
page
57
page
58
page
59
page
60
page
61
page
62
page
63
page
64
page
65
page
66
page
67
page
68
page
69
page
70
page
71
page
72
page
73
page
74
page
75
page
76
page
77
page
78
page
79
page
80
page
81
page
82
page
83
page
84
page
85
page
86
page
87
page
88
page
89
page
90
page
91
Document related concepts
no text concepts found
Transcript 
Motorola P25 Simulcast
Rick Pollak
Solutions Consultant
Motorola
August 6, 2008
“Hi, I’m Rick Pollak and I’m a radio geek!”
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Five Olympic Rings
What do you think of when you see the Olympics logo?
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Five Olympic Rings
A police officer might think of five doughnuts
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Five Olympic Rings
I think of a five-site P25 simulcast system
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Sports Fan’s View
Fencing
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Radio Geek’s View
Fencing
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Sports Fan’s View
Relay
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Radio Geek’s View
Relay
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Sports Fan’s View
Synchronized swimming
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Radio Geek’s View
Synchronized transmitting
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Radio Geek’s View
Clear audio, seamless roaming, and simple operation
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
A Winning Combination
10
Clear audio, seamless roaming, and simple operation
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Motorola P25 Simulcast
Top 5
LSM
Stamford
Phase 2
Backhaul
Here’s what we’ll be talking about today
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Top Five Reasons for P25 Simulcast
Leaders
1.
2.
3.
4.
5.
Frequency efficiency
Better coverage
Full capacity everywhere
Clear audio throughout the network
Multiple sources for subscribers
Why select P25 simulcast over multicast?
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
1. Frequency Efficiency
Site 1
F1 F2 F3
Site 2
F1 F2 F3
F1 F2 F3
Site 3
Wide-area coverage with limited frequencies
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
1. Frequency Efficiency
Site 1
F1 F2 F3
Site 2
F4 F5 F6
F7 F8 F9
Site 3
Multicast may need more frequencies than you have
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
2. Better Coverage
Tight synchronization keeps signals in phase
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
2. Better Coverage
Signals combine in overlap zones to improve coverage
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
2. Better Coverage
Overlap means better coverage for first responders
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
3. Full Capacity Everywhere
4 channels
6 channels
Do you know where your next 911 call will come from?
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
3. Full Capacity Everywhere
10 channels
10 channels
Simulcast gives you full capacity for emergencies
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
4. Clear Audio Throughout the Network
Clear audio in single-site capture area
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
4. Clear Audio Throughout the Network
Clear audio and seamless roaming in overlap areas
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
5. Multiple Sources for Subscribers
P25 simulcast is open architecture
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
5. Multiple Sources for Subscribers
You can buy radios from multiple manufacturers
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Top Five Reasons for P25 Simulcast
Leaders
1.
2.
3.
4.
5.
Frequency efficiency
Better coverage
Full capacity everywhere
Clear audio throughout the network
Multiple sources for subscribers
Why select P25 simulcast over multicast?
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Top Five Reasons for P25 Simulcast
What’s the most important reason for your system?
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
The Most Important Reason
First responders need mission critical performance
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Motorola P25 Simulcast
Top 5
Stamford
P25 simulcast network in Stamford, Connecticut
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Stamford, Connecticut
Multicast to simulcast – improved operations
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Stamford, Connecticut
Suburb of NYC, 37.7 square miles – 117,000 people
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Existing Stamford System
4 channels
6 channels
Analog multicast system from early 1990s
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
New Simulcast Network in 2008
10 channels
10 channels
10 channels
10 channels
Digital simulcast – 4 sites with 10 channels everywhere
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Stamford Simulcast Network
Prime site
Remote sites
Microwave connectivity from prime site to remotes
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Remote Site Configuration
800 MHz stations
GPS interface
Routers
Simple remote site configuration – no site controller
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Prime Site Configuration
800 MHz stations
Comparators
Redundant prime site controller
GPS interface
Routers
Prime site has RF, controllers, and comparators
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Audio Processing
Comparator votes the strongest received signal
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Audio Processing
Comparator routes audio to sites with appropriate delays
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
User Benefits
Clear audio, seamless roaming, and simple operation
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Lower Total Cost of Ownership
P25 simulcast design saves Stamford money
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Lower Total Cost of Ownership
Fewer sites because of additive overlap coverage
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Lower Total Cost of Ownership
Compact stations mean smaller shelters
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Lower Total Cost of Ownership
Lower maintenance costs with digital simulcast
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Motorola P25 Simulcast
Top 5
LSM
Stamford
Linear simulcast modulation
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Linear Simulcast Modulation
Why would you need linear simulcast modulation?
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Linear Simulcast Modulation
.0125
.025
.0375
.050
.0625
.075
.0875
Developed to increase site spacing with12.5 kHz channels
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Linear Simulcast Modulation
P25 Phase 1 uses C4FM modulation
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Linear Simulcast Modulation
10
00
11
01
Linear simulcast uses CQPSK modulation
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Linear Simulcast Modulation
10
00
11
01
“Dibit” pairs mapped to phase changes in RF carrier
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Linear Simulcast Modulation
?
How does that increase site spacing?
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Linear Simulcast Modulation
?
How does that increase site spacing?
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Linear Simulcast Modulation
C4FM
Dwell
CQPSK
Dwell
LSM has a longer dwell in the signal eye pattern
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Linear Simulcast Modulation
C4FM
CQPSK
What if one signal arrives a bit late?
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Linear Simulcast Modulation
C4FM
CQPSK
We want all of the signals to get a gold medal
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Linear Simulcast Modulation
Site 1
Site 2
Arrival times can be further apart with CQPSK
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
C4FM Simulcast Modulation
Non-linear site spacing is 8 miles maximum at 12.5 kHz
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
CQPSK Linear Simulcast Modulation
Site spacing increases with linear simulcast modulation
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
CQPSK Linear Simulcast Modulation
LSM means lower initial and ongoing costs
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Linear Simulcast Modulation
C
K
S
QP
CQPSK linear from infrastructure to subscriber
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Linear Simulcast Modulation
M
F
C4
C4FM non-linear from subscriber to infrastructure
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Linear Simulcast Modulation
You can buy radios from multiple manufacturers
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Linear Simulcast Modulation
Radios can decode C4FM and CQPSK
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Onondaga County, New York
Longer path lengths:
10.19 miles
11.24 miles
11.39 miles
12.27 miles
15-site, 15-channel UHF linear simulcast system
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
State of Rhode Island
Longer path lengths:
10.4 miles
12.4 miles
14.3 miles
24-site, 3-cell linear simulcast at 800 MHz
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Linear Simulcast Modulation
Longer path lengths means lower costs
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Motorola P25 Simulcast
Top 5
LSM
Stamford
Backhaul
Backhaul requirements for P25 simulcast
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Flexible Backhaul Design
MW
T1
Ethernet
d
er
Fi b
lco
Te
Wi Poin
rel
es t to
s B Po
roa int
db
an
End-to-end delay determines backhaul design
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
IP Simulcast
Channel banks are not required for IP simulcast
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
IP Simulcast
IP Network
Channel banks are not required for IP simulcast
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Traditional Microwave
Traditional microwave has the lowest latency
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Motorola PTP Series Microwave
PTP series is an alternative to traditional microwave
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Motorola PTP Series Microwave
LOS
nLOS
NLOS
Alternative to line of sight microwave networks
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Flexible Backhaul Design
MW
T1
Ethernet
d
er
Fi b
lco
Te
Wi Poin
rel
es t to
s B Po
roa int
db
an
Many options available for simulcast backhaul
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Motorola P25 Simulcast
Top 5
LSM
Stamford
Phase 2
Backhaul
Project 25 Phase 2
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
P25 Phase 2 Simulcast
12.5kHz
TDMA gives you more capacity without adding channels
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
P25 Phase 2 Simulcast
Site 1
F1 F2 F3
Site 2
F4 F5 F6
F7 F8 F9
Site 3
I thought you couldn’t simulcast TDMA
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
P25 Phase 2 Simulcast
TDMA
Simulcast
You can have your cake and eat it too!
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
P25 Phase 2 Simulcast
10
00
11
01
Phase 2 simulcast will use HDQPSK linear modulation
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
P25 Phase 2 Simulcast
C4FM
?
HDQPSK
?
Will the performance be the same as CQPSK?
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
P25 Phase 2 Simulcast
Our engineers are busy analyzing the data
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
P25 Phase 2 Simulcast
We’ll be using performance enhancing antennas
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
P25 Phase 2 Simulcast
Don’t worry, you won’t have to P25 in a cup!
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Five Olympic Rings
What do you think of when you see the Olympics logo?
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Sports Fan’s View
Synchronized swimming
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Radio Geek’s View
Synchronized transmitting
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Motorola P25 Simulcast
Top 5
LSM
Stamford
Phase 2
Backhaul
Clear audio, seamless roaming, and simple operation
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
A Winning Combination
10
Clear audio, seamless roaming, and simple operation
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Motorola P25 Simulcast
First responders need mission critical performance
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Motorola P25 Simulcast
P25 simulcast gives you mission critical performance
Motorola P25 Simulcast – APCO International Annual Conference and Exposition – August 6, 2008
Motorola P25 Simulcast
Rick Pollak
Solutions Consultant
Motorola
August 6, 2008
Related documents