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Futureproof ipran for 4.5G/LTE-A and 5G with Ericsson Router 6000 JL Quintero Aug 2017
Radio requirements on transport for 4.5G/LTE-A and 5g
Application requirements
Communication Distance vs. Latency – Especially for Critical IOT 1s
Process automation Tele-surgery
Inter-substation comm.
Latency
100 ms
Remote handling w/o haptic feedback
Substation-internal comm.
Hot rolling mill control Automated guided vehicle
10 ms
1 ms
100 us
Remote handling with heptic feedback (e.g. remote mining) Fixed
Robot manufacturing cell/roundtable
Wireless Autonomous driving
Fiber propagation Access delay (FWA)
Drive Control (packaging, printing) Wind turbineinternal
High speed motion control
10 m
100 m
1 km
Communication distance Router 6000 | Commercial in confidence | May 2017 | Page 3
10 km
100 km
Cloud RAN Architecture – Ready for 5G Distributed RAN
Centralized RAN
Elastic RAN
Virtualized RAN
Improved interworking between sites and layers
Colocation of resources and maximum performance in traffic hotspots
Optimal coordination across the network for D-RAN and C-RAN
Introducing split architecture for full flexibility on the road to 5G
Coordination Maximized spectrum efficiency and end-user experience Transport Enabler for coordination Time & Phase synchronization Enabler for coordination Router 6000 | Commercial in confidence | May 2017 | Page 4
5G Cloud RAN Architecture A Flexible Architecture for coordination L3 L2 L1
(e)S1 (e)X2 (e)S1 (e)S1
› Distributed RAN
L3 L2 high
L3 L2 L1
E5
F1
F1
(e)CPRI
› Virtualized RAN L2 low L1
Router 6000 | Commercial in confidence | May 2017 | Page 5
› Centralized RAN
L2 low L1
(e)CPRI
› Elastic RAN
LTE EVOLUTION – Key drivers for 5G transport
150 MBPS
More Bandwidth
Lower latency
Tighter Sync
LTE Unlicensed
Improved responsiveness
Inter eNB features
Carrier Aggregation
C-MTC emerging
More TDD networks
256 QAM
10GBPS (5G)
70 MS
Inter-eNB features
3km › 1.5µs cell radius < 3km – Positioning › 0.1µs E911 calls with OTDOA Observed Time Difference of Arrival Router 6000 | Commercial in confidence | May 2017 | Page 14
RAN Synchronization requirements Capacity features CoMP VP ±1.5µs, Inter eNB UL CoMP ±1.5µs, eRAN UL CoMP (future) ±1.5µs, eRAN DL CoMP (future)
Ericsson Lean Carrier VP ±1.5µs Ericsson Lean Carrier ±7µs (in UE) Network Assisted CRS-IC
Advanced CA VP ±1.5-5µs, Elastic RAN CA ±1.5-5µs, Inter-eNB CA
LTE Broadcast VP ±1.5µs – ±5µs,
Massive IOT ±1s, Idle Mode eDRX
Services Location Support VP ~100ns/0.1µs, OTDOA
Time Division network TD LTE ±1.5µs, e.g. TDD
5G (NR) ≤±1.5µs, e.g. TDD
Time accuracy of ±1.5µs covers the majority of use cases Router 6000 | Commercial in confidence | May 2017 | Page 15
Superior synchronization for Superior radio performance › Frequency Synchronization: – 3GPP: 50 ppb frequency stability on air interface – Minimize disturbance on air interface to secure handover between RBSs – Fulfill tough regulatory requirements connected to the frequency license
FDD – Frequency Division Duplex
› Phase (Time) Synchronization: – 3GPP specifies phase accuracy of ≤ 1.5µs for most scenarios – Synchronize transmission from different base stations to optimize bandwidth usage and enhance network capacity TDD – Time Division Duplex Router 6000 | Commercial in confidence | May 2017 | Page 16
Precision Time Protocol (PtP) Telecom Profiles › IEEE 1588 packet-based synchronization – Profiles allow selections of attribute values and optional features of PTP that inter-work and achieve a required performance for a particular application when using the same transport protocol
› ITU-T Timing profiles – Enables the deployment of PTP-based frequency synchronization – G.8265.1: Frequency distribution without timing support from the network (unicast mode) – G.8275.1: Phase and time distribution with full timing support from the network – G.8275.2: Phase and time distribution without full timing support
Router 6000 | Commercial in confidence | May 2017 | Page 17
RAN & Transport Time sync error budget ±1.5µs RAN Sync domain End-to-end budget CELL SITE
CPRI eCPRI
CELL SITE
Baseband 5216 3x CPRI-7
Radios
X2 eX2
±1.1µs Transport Sync domain End-to-end budget
Router 6000 | Commercial in confidence | May 2017 | Page 18
Baseband 5216 3x CPRI-7
CPRI eCPRI
Radios
Ericsson Router 6000
Synchronization Performance G.8273.2 Metric
Maximum Absolute Time Error
cTE (Constant Time Error)
Dynamic TE (Time Error)
TDEV (Time Deviation)
Class A
100ns
+- 50ns
40ns
4ns
Class B
70ns
+- 20ns
40ns
4ns
Router 6000 G.8275.1 T-BC
18ns
< +- 4ns
< 4ns
< 1ns
Holdover Performance
60s Holdover
5 min Holdover
5 min Holdover without SyncE
G.8271.1
350ns
450ns
NA
Router 6000 G.8275.1 TBC
< +- 10ns
< +- 10ns
< +- 200ns
•
350ns is 300ns holdover budget + 50ns Class A budget
•
450ns is 400ns holdover budget + 50ns Class A budget
Router 6000 | Commercial in confidence | May 2017 | Page 19
Time/Phase Sync with G.8275.1 Profile: Timing Boundary Clock T-BC • Frequency sync delivered to RBS via SyncE • Time/Phase delivered to RBS via 1588 PTP Clock (T-BC) locked time/phase to upstream T-BC/GM via 1588
Ethernet mcast encapsulated 1588 frames.
Ethernet
Ethernet
Equipment Clock
G.8275.1 Clock
SyncE Output Stable freq source to PTP Clock
Router 6000 | Commercial in confidence | May 2017 | Page 20
Ethernet mcast encapsulated 1588 frames.
SyncE as input source
GPS
Ethernet
8275.1 Capable Packet Network
Grandmaster Clock (GM)
Time/Phase Sync with G.8275.1 Profile: Timing Boundary Clock with Grand Master T-BC/GM GPS03
• Frequency sync delivered to RBS via SyncE
GPS is primary input source for time/phase & frequency to Equipment and PTP clocks
• Time/Phase delivered to RBS via 1588 • Ethernet mcast encapsulated 1588 frames.
1PPS+ToD Input
Ethernet
Ethernet
Using E/// CombinedE/// personality or CMCC/HPTSI Protocol for ToD messaging
Equipment Clock
SyncE Output Stable freq source to PTP Clock
G.8275.1 Clock
SyncE as secondary freq input source
1588 as secondary input source for time/phase from upstream T-BC/GM
GPS
Ethernet
8275.1 Capable Packet Network
1588 acts as backup to local GPS for time/phase frequency sync Router 6000 | Commercial in confidence | May 2017 | Page 21
Grandmaster Clock (GM)
Time/Phase Sync with multiple Profiles: G.8275.2 as backup source
GPS03
• Frequency sync delivered to RBS via SyncE
GPS is primary input source for time/phase & frequency to Equipment and PTP clocks
Stable freq source to PTP Clock
Time/Phase delivered to RBS via G.8275.1 profile
Ethernet mcast encapsulated 1588 frames.
1PPS+ToD Input Ethernet G.8275.1 Clock
Ethernet
SyncE Output
G.8275.1 Profile
Using E/// CombinedE/// personality or CMCC/HPTSI Protocol for ToD messaging
G.8275.2 Clock
1588 as secondary input source using G.8275.2 profile for time/phase from upstream T-BC/GM
Equipment Clock
SyncE as optional secondary freq input source
Ethernet
Non-PTP Capable Packet Network
G.8275.2 Profile
1588 acts as backup to local GPS for time, phase & frequency sync Router 6000 | Commercial in confidence | May 2017 | Page 22
GPS
Grandmaster Clock (GM)
Time/Phase Sync with multiple Profiles: G.8275.2 to Sync Small Cells Freq/Time/Phase delivered to RBS via G.8275.2 profile
PTP Clock (T-BC) locked time/phase to upstream T-BC/GM via G.8275.1 profile
IP unicast encapsulated 1588 frames.
Non-PTP Capable Packet Network
Stable freq source to PTP Clock
G.8275.2 Profile
G.8275.2 Clock
Ethernet mcast encapsulated 1588 frames.
G.8275.1 Clock
GPS Equipment Clock
SyncE as input source
Ethernet
8275.1 Capable Packet Network
G.8275.1 Profile
GPS source can also be added to Router 6000 in this scenario if needed Router 6000 | Commercial in confidence | May 2017 | Page 23
Grandmaster Clock (GM)
Interoperability Showcase European Advanced Networking Test Center › Test areas of interest – Netconf/YANG – ITU-T Y.1731 based bandwidth notification – Clock Synchronization › G.8275.1: T-GM Failover › G.8275.2: Assisted Partial Timing Support(A-PTS) / PTS
› Ericsson Radio System focus – Router 6000, MINI-LINK, Radio, GPS
Download from EANTC’s website Router 6000 | Commercial in confidence | May 2017 | Page 26
Ericsson Router 6000 family Building transport for the next generation radio networks
Capacity Quality of with Flexibility Service
Radio-aligned QoS support with high buffering time at full utilization
Router 6000 | Commercial in confidence | May 2017 | Page 28
Router 6000 | Commercial Presentation | Commercial in Confidence | © Ericsson AB 2017
Security
Sync
SDN
Quality of service For maximum user experience
Large Buffers
High density of 10G ports with
Hierarchical Queuing
low latency
…are required to
build best-in-class 5G ready transport offering superior app-coverage as well as excellent service quality for all services and industries Router 6000 | Commercial in confidence | May 2017 | Page 29
Router 6000 | Commercial Presentation | Commercial in Confidence | © Ericsson AB 2017
Shared networks using QoS per VLAN and H-Qos Standard QoS
› Differentiation between different traffic classes (CoS) › Services within the same traffic class are treated as a single aggregation with no isolation › Limited per-service visibility and control Router 6000 | Commercial in confidence | May 2017 | Page 30
H-QoS
› Each service gets its own personalized treatment › Per-service full visibility and control › Differentiation between different traffic classes (CoS) within a service
Why mobile Networks are bursty › Device mobility in mobile networks › Especially in busy cells like central train stations, subways, bus interchanges › 5G networks will be even more bursty with higher frequency and small cells › Big buffers key to optimizing TCP based traffic / video experience for subscribers UE
Router 6000 | Commercial in confidence | May 2017 | Page 31
Mobile Backhaul bursts Cause
Description
Burst rate
S1/X2 handover
During handover, traffic can move quickly to new links/new eNodeBs
Up to 200 Mbps per user
Transport Network event
For example, a link fails and traffic is re-routed very quickly (