Huawei LTE Commissioning Overview
• Jeff Fry, Wimax/LTE Systems Integration & Test, Technology
Development
LTE Network Commissioning Document:
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<Some location on portal>
LTE Commissioning Overview:
• Dual-mode Wimax/LTE
• Commissioning Data Preparation
• Commissioning Task
• OAM Link and Commissioning Task Execution
• Distribute Commercial License
• Multi-modal BTS and eNodeB Mode
© 2006 Clearwire Corporation CONFIDENTIAL & PROPRIETARY, Limited Distribution to Authorized Persons Only
Dual-mode Wimax/LTE: Basics
• TD-LTE, Band 41
– EARFCN=40590 (freq=2590MHz)
– 20 MHz
• LTE deployed as 3 sectors using Reuse-1 (one frequency).
• Each configured carrier is a Cell.
• LTE initially deployed as S111.
© 2006 Clearwire Corporation CONFIDENTIAL & PROPRIETARY, Limited Distribution to Authorized Persons Only
Network Architecture
• MME – Mobile Management Entity controls mobile signaling: network
attach/authentication (to HSS), handovers, idle mode
• SGW – Service Gateway provides the user plane data traffic.
• HSS – Home Subscriber Server provides subscriber provisioning.
• Important interfaces from the eNodeB:
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S1-U : interface to the SGW
S1-MME : interface to the MME
X2 : interface to another eNodeB for mobility
© 2006 Clearwire Corporation CONFIDENTIAL & PROPRIETARY, Limited Distribution to Authorized Persons Only
Dual-mode Wimax/LTE: Shared BS
• Wimax and LTE run on the same base station with addition of LTE
cards.
• Wimax and LTE share the same radio head (RRU).
• Separate backhaul for Wimax & LTE. GigE for LTE and 100MB ETH
for Wimax.
Wimax Carriers on 1st fiber
LTE Carriers on 2nd fiber
LTE Cards: LBBP, LMPT
© 2006 Clearwire Corporation CONFIDENTIAL & PROPRIETARY, Limited Distribution to Authorized Persons Only
Dual-mode Wimax/LTE: Fiber Clearing and Configuration Scenarios
• Due to the various Wimax configurations (S222, etc), different Wimax
reconfigurations (Fiber Clearing) are required to support LTE S111.
• Fiber Clearing should be completed prior to LTE commissioning.
© 2006 Clearwire Corporation CONFIDENTIAL & PROPRIETARY, Limited Distribution to Authorized Persons Only
Commissioning Data Preparation
• Similar to Wimax, templates are used for commissioning – LTE
Summary Data Files.
• LTE Summary Data Files are Excel spreadsheets that only contain
the specific eNodeB parameters for IP and RF planning.
• Default or common parameters are already loaded into the EMS.
Referenced by LTE Summary Data File.
• No additional MML configuration required.
• Request eNodeB license from Huawei.
© 2006 Clearwire Corporation CONFIDENTIAL & PROPRIETARY, Limited Distribution to Authorized Persons Only
Auto-Deployment Task
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Create the task using the new CM Express EMS component. This is new for
LTE.
Similar to Wimax WCS, you create a workspace and import the LTE
Summary Data File.
CM Express provides automatic checks prior to deploying.
Specify the software version, but should default to the latest.
This will create an auto-deployment task in the eNodeB auto-deployment list.
© 2006 Clearwire Corporation CONFIDENTIAL & PROPRIETARY, Limited Distribution to Authorized Persons Only
OAM Link and Commissioning Task Execution
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To start the commissioning task, enter the eNodeB ESN (from the field tech)
and start the task.
The OAM link is established via DHCP like Wimax.
Monitor the progress of the task through each step (software download,
configuration, etc).
© 2006 Clearwire Corporation CONFIDENTIAL & PROPRIETARY, Limited Distribution to Authorized Persons Only
Main Topology
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eNodeB Topo Object is initially created in a default EASY_DEPLOYMENT
subnet alongside Wimax BTS.
Can be moved to a new LTE subnet.
© 2006 Clearwire Corporation CONFIDENTIAL & PROPRIETARY, Limited Distribution to Authorized Persons Only
Distribute Commercial License
•
Distribute the eNodeB license that was provided by Huawei based on the
eNodeB ESN.
© 2006 Clearwire Corporation CONFIDENTIAL & PROPRIETARY, Limited Distribution to Authorized Persons Only
Multi-modal BTS and eNodeB Mode
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The BS must be configured in the EMS to show that it is multi-modal and
supports both Wimax and LTE. This show the BS as a single node with
Wimax and LTE in the topology. It also prevents duplicate alarms from
Wimax and LTE.
eNodeB are initially deployed in a TEST mode. This must be changed to a
NORMAL mode. This affects some alarms.
© 2006 Clearwire Corporation CONFIDENTIAL & PROPRIETARY, Limited Distribution to Authorized Persons Only
FIN
• Questions?
© 2006 Clearwire Corporation CONFIDENTIAL & PROPRIETARY, Limited Distribution to Authorized Persons Only