7708-vida broadband lte web tcm27-13506
TRANSCRIPT
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assuredcommunications
VIDA Broadband LTE700 MHz Broadband for Public Safety
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2 |VIDA Broadband LTE
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Table o Contents
VIDA Broadband LTE700 MHz Broadband Networks or Public Saety
Executive Summary
Network Design Overview
VIDA Core Network Description
LTE RAN Description
Network Management and Administration
Priority Services
Harris Managed Services
Broadband Application Support
Public Safety Broadband User Equipment
pg. 4
pg. 7
pg. 11
pg. 14
pg. 16
pg. 18
pg. 19
pg. 19
pg. 22
VIDA Broadband LTE | 3
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1. Executive Summary
To meet the need or Public Saety mission-critical mobile broadband services, Harris Corporation
has developed VIDA Broadband LTE: a complete 700 MHz private broadband network based on the
3GPP LTE cellular technology. VIDA Broadband LTE is a private wireless broadband network designed
exclusively or Public Saety, and uses the same ourth generation cellular network architecture and
over-the-air technology (LTE, or Long Term Evolution) as commercial cellular networks slated or
deployment with hundreds o carriers across the globe. Harris has integrated this commercial LTE
technology into our VIDA platorm which provides mission critical voice and data or Public Saety
customers. With VIDA Broadband LTE, First Responders have a customized solution that leverages the
LTE ecosystem yet meets their needs or a highly reliable, secure, interoperable broadband network
or wide area mobile applications.
The VIDA Broadband LTE network is designed to meet the requirements o the Federal Communications
Commission National Broadband Plan, allowing Public Saety agencies to deploy an inrastructure
that ully integrates into a nationwide, interoperable Public Saety wireless broadband network. VIDA
Broadband LTE meets the cyber security and critical inrastructure survivability requirements that
FCC has mandated or Public Saety broadband, and ully supports the evolving technical ramework
or the FCCs Emergency Response Interoperability Center (ERIC).
VIDA Broadband LTE provides substantial benefits or First Responders over both private data and
commercial cellular networks. VIDA Broadband LTEs advantages over traditional private data
networks include:
Public Saety agencies can now deploy broadband data applications across their entire fleet, to all
users requiring mission critical data access.
The network provides suf cient bandwidth or applications requiring demanding Quality o
Service, including streaming video.
The large coverage ootprint o VIDA Broadband LTE allows Public Saety to use these applications
across their jurisdictional boundaries, not just in designated hot-spots or coverage areas.
The Harris VIDA Broadband LTE system implements sophisticated access control, user priority
and quality o service to ensure that the network can be used or true mission critical applications.
Private networks ensure that broadband applications can be mission-critical, and that users can
access the network during catastrophic events. Public users o other cellular networks cannot
access the private Public Saety networks or spectrum, and cannot swamp the network as
commonly happens with commercial networks.
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VIDA Broadband LTE | 5
While VIDA Broadband LTE uses the same radio technology as ourth generation cellular, the VIDA
Broadband LTE network provides additional unctionality not ound in commercial networks
including the capability to directly connect Harris VIDA-based LMR and the LTE systems into a single
multi-band, multi-mode Public Saety communication network. And because Public Saety agencies
control the deployment, VIDA Broadband LTE networks can be built with the reliability, robustness
and redundancy necessary to ensure communications under the worst possible circumstances. Finally,
private broadband networks ensure that broadband applications can be mission-critical, and that
users can access the network during catastrophic events.
Network
Management and
Administration
Multi-Mode
Dispatch
VIDA Broadband
4.9 GHz
VIDA Broadband
LTE RAN
P25IPSystems
Legacy Trunked
and Conventional
Systems
Other P25
Systems
NetworkFirst
ISSI
INTERNET
VoIP
Telephone
Voice Call
Routing
Data Packet
Routing
BROADBAND
ACCESS
NARROWBAND
ACCESS
FIXED ACCESS
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Integrated narrowband and broadband dispatch calls are transmitted seamlessly across VIDA
Broadband LTE. Using the VIDA Core Network, Public Saety dispatch calls that originate on a P25-
compliant LMR network are transparently routed to users with P25 Voice over IP capabilities on theVIDA Broadband LTE network. The broadband calls have ull end-to-end encryption, and use the
same patch, priority and preemption capabilities developed or the LMR network. Radio dispatchers
operating rom Public Saety dispatch centers can directly contact and manage users operating on the
broadband network with the same Computer-aided Dispatch and incident management systems as
they have with traditional LMR users. Future multi-mode, multi-band devices will have the capability
to operate on both the LMR and broadband networks, allowing seamless transition o users across
regional or even nationwide networks.
The VIDA Broadband LTE network consists o a number o key elements:
The VIDA Core Network that provides packet routing, mobility management and service
provisioning capabilities to users on the network,
An LTE Radio Access Network (RAN) which provides wireless coverage to users o the network,
Network Management servers and consoles to monitor the perormance and status o the
network devices,
Integrated multi-agency Network Administration that allows users to be provisioned with both
broadband data and Public Saety voice capabilities simultaneously, and
Mobile and fixed subscriber equipment.
Network
Management
Network
Administration
LTE
RAN
LTE
RAN
LTE
RAN
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VIDA Broadband LTE | 7
In addition to the VIDA Broadband LTE network, Harris Corporation can also provide a wide variety
o user equipment, Public Saety applications, and managed services to aid in the deployment and
operation o the network. Harris deployment capabilities include system engineering, coverageanalysis, project management and site development. Harris also has the expertise to operate and
manage the network, allowing Public Saety agencies to ocus on their mission o delivering emergency
services to protect the public. As an option, Harris can also provide the VIDA Core Network as a
managed service, so that customers do not need to incur the capital expense o deploying a broadband
network operations center.
By teaming with Harris Corporation to deploy a VIDA Broadband LTE network, Public
Saety agencies can quickly realize the promise o 700 MHz broadband in support o their
mission-critical communications:
Network coverage with roaming across jurisdictional boundaries
Priority access or high bandwidth communications
Secure delivery o critical inormation to first responders in the field
Quality o Service to support streaming video applications.
2. Network Design Overview
The VIDA Broadband LTE network conorms to the 3GPP Release 8 o the Evolved Packet System
(EPS), commonly reerred to as Long Term Evolution (LTE). Previous 3GPP standards supported
traditional circuit switched cellular voice services and defined a separate packet data network as an
adjunct capability. LTE is a natural evolution or commercial cellular networks to use same IP packet-
switched technology that Harris VIDA Core Network has deployed or Public Saety narrowband
networks. LTE is the result o the 3GPPs eorts to evolve rom the hybrid circuit switched/packet
switched network into a single packet data network supporting voice and data services. In addition
to evolving the core network, LTE provides enhanced radio interace or air link capabilities which
provides high throughput broadband data access to multiple users. The evolved LTE network also
provides priority services with Quality o Service (QoS) and improved user access times. The inherentQoS in LTE means that dierent users (such as emergency voice calls), or dierent applications (or
instance, streaming video) can be assured o priority access or adequate bandwidth. The Harris VIDA
Broadband LTE network seamlessly integrates into the VIDA Core Network, allowing or coherent
First Responder narrowband and broadband communication services across a single, unified system.
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VIDA Core Network
The system design o VIDA Broadband LTE divides the unctional capabilities o the network into two
main components: the VIDA Core Network (VIDA CN) and the LTE Radio Access Network (LTE RAN).
The VIDA CN tracks the location (or site) o registered users, routes voice and data packets or the
user to that site, and continuously monitors the operation o the network to optimize perormance.
Within the terminology o the 3GPP, the packet switched core network or LTE is reerred to as an
Evolved Packet Core (EPC). Because the EPC uses a single technology or voice and data routing, the
EPC acilitates network deployment and lowers operational costs. The VIDA CN is an implementation
o the EPC, optimized or all modes o Public Saety communication, including dispatch. The VIDA CN
manages communications to users as they roam throughout the network, providing dispatch, push-to-
talk, and data services. The VIDA CN is implemented as a flattened IP design, providing or significant
reductions in jitter and latency. These perormance improvements greatly enhance the system or
time sensitive applications such as Push-to-talk Over Cellular (POC). In addition to providing LTE
specific core unctionality, the VIDA CN provides access points or other IP data services, such as local
area VIDA Broadband 4.9 GHz hot zones, or wide area narrowband data.
LTE RAN (Radio Access Network)
The VIDA Broadband LTE RAN provides the air link, or radio services to the user as they roam
throughout the network. Users register on the LTE RAN, are provisioned or services based on profiles
received by the VIDA CN, and are allocated air link bandwidth or supported services. The LTE RAN
is physically comprised o the equipment at the various remote transmit sites needed to provide
coverage including the base stations, antenna systems and connecting network backhaul equipment.
Each VIDA Broadband LTE site has a minimum o one radio base station that operates on the 5
MHz Public Saety downlink channel and the 5 MHz uplink channel. Most sites provide additional
capacity by using 120 sectorized antenna systems. The base station, or eNodeB as it is reerred to in
LTE terminology, broadcasts an evolved Media Access Control (MAC) layer to all registered radios.
The evolved MAC is responsible or Radio Resource Management (RRM) capabilities including the
scheduling o packets over the air link according to users defined priority and QoS profile. Compared
to the previous generation o wireless data networks, the LTE RAN achieves the objectives o improved
perormance in the areas o radio interace throughput, data transmission latency and terminal state
transition times. The RAN additionally provides enhanced mobility and traf c management through
inter-eNodeB communication protocols designed to provide seamless hando and load balancing
between eNodeBs.
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Network Management and Administration
As network elements incrementally become capable o perorming more complex tasks, day to
day operational activities become increasingly reliant on the Network Management and Network
Administration system. The VIDA Core Network Management and Network Administration solution
includes capabilities specific to the 700 MHz broadband network as well as integrated administrative
capabilities that apply to VIDA LMR technologies. The VIDA Core Network Management System
(NMS) provides a solution or all aspects o traditional management systems in the areas o Fault
Management, Configuration Management and Perormance Management. Fault Management
capabilities include alarm and event monitoring with filtering, correlation and reporting. Configuration
Management capabilities include parameter set validation and verification, configuration backup and
restore capabilities. System monitoring and traf c usage analysis tools aid in perormance tuning and
load balancing.
The VIDA Core Unified Administration System (UAS) encompasses the areas o Administration and
Security. The UAS is an integrated solution that allows the administrator to setup all aspects o a
subscribers profile rom a single access point and administrative User Interace (UI). Individual
users are configured to use multiple technologies and parameters that are applicable to more than
one technology are provisioned automatically without the administrator needing to enter repeated
inormation or each network, technology, or access method. For example, a user can be configured
by a single system or both their broadband data services and their LMR voice services, and those LMR
voice services can be delivered by narrowband LMR transport or over the broadband network.
Priority Services
Priority services allow Network Administrators to ensure inormation flow even under the congested
conditions which may occur when large numbers o users gather in response to catastrophic events.
Unlike commercial networks, which may be prone to overload conditions rom non-priority public
users during mass disasters, VIDA Broadband LTE networks are only accessible by authorized First
Responders. In addition to limiting access to authorized users, VIDA Broadband LTE provides SystemAdministrators with the tools to manage priority and QoS or users and applications across the
network. Each user or application has a specific profile which designates the level o priority and/
or allocated bandwidth. With these tools, the highest priority communications (such as critical voice
dispatch communications) are guaranteed access across the network. Additionally, high priority
video applications can be guaranteed suf cient bandwidth to ensure that quality o the video does not
degrade as the network capacity gets allocated to other users.
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VIDA LMR Integration
Harris push-to-talk over cellular oering provides a voice solution that integrates with other LMR
systems through the VIDA Core. The VIDA Network Switching Center (NSC) is capable o integrating
P25, OpenSky, EDACS and Conventional LMR voice systems. Each systems voice data is carried as
IP packets over the VIDA Core and are converted to the required ormat at each technologies point
o attachment to the core. These capabilities may now be extended to integrate with Harris push-to-
talk application running over the Public Saety broadband network. This is a ully integrated sotware
based solution that provides all o the eatures o LMR voice including areas such as group calling,
individual call, simul-select and patch. VIDA Broadband LTE users can also seamlessly interoperate
with other First Responders on traditional narrowband voice networks using the P25 Inter Sub-System
Interace (ISSI) or NetworkFirst interoperability gateways. By connecting to other manuacturers
P25 network with VIDA Core Network P25 ISSI gateway, broadband users can have end-to-end AES
encrypted conversations with users on a regional or nationwide basis. NetworkFirst interoperability
gateways allow broadband users to immediate connectivity to users on legacy systems regardless o
narrowband brand or band.
Backhaul
LTE networks require significant backhaul at each site to support the over-the-air data rates that
can be delivered with the LTE technology. The peak user capacity or a sector is nearly 30 Mbps,
with an average capacity o closer to 10 Mbps. As a typical site can be constructed rom multiple
sectors, a site requires a backhaul capacity o 10 Mbps to 100 Mbps, depending on the network use
cases and the assumptions about the network loading. The VIDA Broadband LTE system supports a
flat IP architecture and can be integrated in with a wide variety o backhaul solutions such as fiber,
microwave, or carrier Ethernet. For sites that do not have adequate backhaul, Harris can use the
VIDA Broadband 4.9 GHz WiMAX platorm to provide last mile connectivity or the LTE system. This
backhaul system can be configured and managed by the same centralized administration system as
the rest o the broadband network.
Applications
The VIDA Broadband LTE packet data network provides a Public Saety solution capable o hosting
virtually any IP based sotware application. Advanced traf c management capabilities allow the VIDA
Broadband LTE solution to speciy priorities and QoS on a per application or user basis. This ability
allows multiple applications to be deployed and run concurrently without risk o them interering
with each other or adversely aecting another users application perormance. Currently supported
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applications include video surveillance, mobile of ce, mission critical push-to-talk voice over
broadband, situational awareness, transit data, and traf c control.
User Equipment
VIDA Broadband LTE supports a suite o LTE compliant User Equipment (UE) with various orm
actors and capabilities. Current mobile and handheld solutions include mobile modules or use
with vehicular-mounted laptops or other portable data devices and a multi-protocol vehicular router
solution. Various fixed solutions may be provided directly or through integration services in the areas
o video surveillance, traf c light controllers and intelligent road signs. All Harris terminals will be
compliant with LTE Release 8 and are upgradeable as newer releases become available. Because the
VIDA Broadband LTE network is compliant with the FCCs mandated technology or 700 MHz Public
Saety broadband, the network will support any other vendors equipment that is designed to operate
on the Public Saety 700 MHz spectrum.
Reliability and Redundancy
VIDA Broadband LTE takes advantage o the standards open interaces to deploy hardened reliable
solutions by providing redundant equipment configurations at various points within the network.
Starting at the LTE RAN and moving up through the elements within the VIDA Core Network,
each network interace allows multiple interconnections by multiplexing between network nodes.
Each network node is capable o communicating with multiple nodes at the next link within the
communications hierarchy. For example, an LTE base station can communicate with multiple
Mobility Management Entities and a Mobility Management Entity can communicate with multiple
base stations. Network elements within the VIDA Core Network may simultaneously be configured as
load balancing peers and N+N redundant backups. This allows distribution o network traf c with
the advantage o ault tolerance in case o any particular node ailure. Additional elements may also
be configured in a strictly redundant capacity in which they only become active during a ailover
scenario. Network elements are ully integrated into the Network Management System which provides
real-time notifications o all ailover scenarios.
3. VIDA Core Network Description
The VIDA Core Network (VIDA CN) is a highly customized 3GPP Release 8 flattened IP core. The
simplified architecture combined with the addition o enhanced QoS eatures provides marked
improvements in jitter and latency times over previous hybrid 3GPP circuit-switched/packet data
networks. The VIDA CN provides interaces to the LTE RAN to support the access control, service
provision, roaming and management unctions required by a wireless network.
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These unctions are distributed among the ollowing VIDA CN elements as defined in the 3GPP
LTE standards:
Home Subscriber Server (HSS) Mobility Management Entity (MME)
Policy Charging and Rules Function (PCRF)
Packet Data Network gateway (PDN-GW)
Serving Gateway (S-GW)
The Home Subscriber Server (HSS) is a concatenation o the traditional Home Location Register (HLR)
and the Authentication Center (AuC). The HSS is provisioned by the UAS and is in charge o storing
and updating a database containing all o the users subscription inormation, the users International
Mobile Subscriber Identity (IMSI) and approved QoS profiles. In addition the HSS contains the users
shared secret and is in charge o generating security inormation used or terminal authentication and
radio link ciphering and integrity protection.
The Mobility Management Entity (MME) caches inormation it receives rom the HSS when a subscriber
enters the network. This includes QoS and subscriber parameters which are used to authenticate the
subscriber and trigger the establishment o radio bearers (a connection-less IP packet service that
acts a virtual circuit) between the terminal and the target eNodeB. Since a single MME domain hosts
multiple eNodeBs the subscriber is able to maintain state as it hands o rom base station to basestation. The MME perorms tracking area updates to maintain location inormation or terminals in
Network
Management
Network
Administration
LTE
RAN
LTE
RAN
LTE
RAN
MME
S-G
WP
CRF
PDN-
GWHSS
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VIDA Broadband LTE | 13
idle state and initiates pages o the mobile device. Due to the always-on nature o the LTE network,
the MME is able to bring the UE rom idle to connected mode in under 50 ms.
The Policy Charging and Rules Function (PCRF) is where the Network administrators allocate
services, priority and QoS to users, devices, types o services, and even individual applications. The
PCRF is the network side aggregation point or subscriber profiles. The PCRF integrates to the Packet
Data Network Gateway (PDN-GW) to allow supported applications sets and set QoS parameters or
subscribers when they enter the network. The PCRF also provides published interaces which allow
application servers to extend the policy profile through the entire network. Like the HSS, the PCRF
database is populated rom the UAS subscriber base.
The PDN-GW provides the termination point or the User Equipment when accessed via the packet data
network, whether a private network or the public internet. PDN-GWs provide terminal IP addresses
when the subscriber enters the network and may be either static or selected rom an address pool.
The PCRF provides the PDN-GW with the inormation required to perorm policy enorcement. Policy
enorcement uses Traf c Flow Templates (TFT) to map packets to network bearers with established
QoS parameters. The TFT specifies IP address and ports which the PDN-GW uses to provide a
particular application with its required QoS. The PDN-GW additionally provides an access point or
inter-networking to LMR or other existing Public Saety networks.
The Serving Gateway (S-GW) provides the termination point o the packet data interace toward the
RAN. As the S-GW domain hosts multiple eNodeBs, the S-GW maintains a network bearer between
itsel and the PDN-GW while the UE moves between eNodeBs attached to the same S-GW. In addition
to being a mobility anchor or LTE terminals, the S-GW is also capable o acting as a mobility anchor
between LTE and non-LTE 3GPP standardized terminals.
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4. LTE RAN Description
The VIDA Broadband LTE Radio Access Network (LTE RAN) is designed to provide optimum broadband
coverage and perormance or mission critical Public Saety applications running on the 700 MHz
network. A typical LTE RAN design will consist o LTE base stations (reerred to as eNodeB in 3GPP
standards) deployed at RF sites using sector antennas. In a typical Public Saety deployment, the RAN
would be configured to use the 10 MHz o Public Saety broadband spectrum (5 MHz on DL rom
763 MHz to 768 MHz, and 5 MHz on the UL rom 793 MHz to 798 MHz). I Public Saety is granted
access to the D-Block spectrum (758 MHz to 763 MHz and 788 MHz to 793 MHz), then the VIDA
Broadband RAN solution can be configured to cover the complete 20 MHz o Band 14 (10 MHz on DL
rom 758 MHz to 768 MHz, and 10 MHz on the UL rom 788 MHz to 798 MHz) without any hardware
or sotware changes.
The VIDA Broadband LTE RAN is designed to maximize the capacity and coverage o the 700 MHz
network and can be deployed with Multiple-Input-Multiple-Output (MIMO) technology This allows
each base station to use multiple sector antennas, each o which has two cross-polarized RF paths.
For terminals that are near the base station, the Harris equipment will use Spatial Multiplexing that
eectively doubles the data rate by multiplexing twice the data across the two streams. For terminals
Network
Management
LTE RAN
Base Station
Network
Administration
LTE RAN
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VIDA Broadband LTE | 15
that are arther rom the base station, or have reduced coverage due to terrain, the base station uses TX
and RX diversity to extend the range o the cell. As Public Saety systems oten have a very high peak
load during an incident, the Harris LTE solution implements a load-sharing algorithm between basestations to allow or managing o capacity and users. I a sector becomes overloaded (i.e. numerous
first responders converging during an incident), the overloaded base station will hando all the
users in the cell that can be adequately serviced by adjacent cells, thus reducing to the load on the
congested site.
A typical site will have a coverage radius o 1-3 miles, depending on terrain, building clutter, antenna
height, etc. For rural sites the cell radius can reach up to 10 miles. Because LTE is an adaptive
modulation technology, the data rate is variable, with the highest data rates being available when
the user is near the base station and reducing data rates as the user approaches the cell edge. Table
I shows the peak and cell edge data rates or the VIDA Broadband LTE system operating in the 700
MHz Public Saety band. The capacity o a sector is a unction o where the users are in a cell, as the
cell will provide dierent data rates to dierent users depending on where the users are in the cell.
In LTE, cell resources are allocated in Resource Elements, and the capacity is a unction o how many
resource elements are allocated to each user. The LTE system uses advanced multicarrier modulation
and coding techniques to maximize throughput and coverage o the network. On the downlink (DL),
the system uses orthogonal requency domain multiple access (OFDMA), where the modulation o
each carrier can be varied rom QPSK to 64-QAM with adaptive coding rates depending on signalconditions. On the uplink (UL), the LTE standard uses single-carrier requency domain multiplexing
(SC-FDMA). This uplink modulation is also a multicarrier technique that allows or variable data
rates versus signal conditions, with the added advantage o a lower peak-to-average ratio as compared
to the downlink modulation. The low end capacity will occur i all resource elements are allocated
to users at the cell edge (~600 kbps on DL and UL), while the maximum capacity will occur i all
resource elements are allocated to users in optimum coverage (~18 Mbps on the DL and ~12 Mbps
on the UL). In general, the average capacity o a cell can be considered to be 5-10 Mbps on the DL
and 3-6 Mbps on the UL.
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16|VIDA Broadband LTE
Downlink (DL)
[kbps]
Optimum Coverage
Cell Edge
Average Capacity
18250
680
5000 - 10000
9890
630
3000 - 6000
Uplink (UL)
[kbps]
5. Network Management and Administration
The increase in network element capabilities results in an increase in configuration complexity.
Without a comprehensive set o management tools, the breadth o configuration options or even
a single element can provide a significant challenge or an administrator to provision the unit andbring it to a ully operational state. When configurations need to be perormed or multiple elements
and the parameter sets have interdependencies, the aid o a Network Management System (NMS)
is essential. Because o these parameter interdependencies, many configuration values must pass
a perormance verification process as well as the more traditional data type validation process.
Network Management Systems can automate verification and validation processes and may reduce
the provisioning parameters divulged to the administrator to the minimum set essential or successul
network operation. The VIDA Core NMS addresses the issues o system complexity by implementing
intelligent sotware solutions designed to reduce the number o parameters presented to the
administrator. Other configuration capabilities provided by the VIDA Core NMS include configuration
backup and restore, bulk downloads and support or system wide modifications, remote sotware
upgrades and inventory management.
Table 1 Throughput and Capacity of a typical 700 MHz LTE sector. The throughput is dynamically varied
by the base station to each uE between the optimum coverage values and the cell-edge values based on signal
conditions. The average capacity is a function of where users are in the cell.
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Perormance verification is important because increasingly, equipment settings and parameters which
are set individually or each network element become pertinent to overall network perormance
management. Analysis o the available parameter set allows the network to ensure that each elementis set to yield the best perormance throughout the network. For example, instead o setting base
station transmit power levels to maximize output at every site, the network can determine through
heuristic data that site overlap, user throughput, and coverage at some sites will be improved by
lowering power output at target sites. With this automated analysis the network can perormance
tune in real time. These increases in NMS automation have enabled the VIDA Core NMS to become
a Sel Optimized Network (SON). Other examples o VIDA Broadband LTE SON capabilities are in
the area o user capacity congestion and traf c analysis to perorm automated load balancing. The
NMS may also be configured to orward perormance and usage data records to a collection point or
o ine analysis.
Another result o the enhanced capabilities o a network element is the increase in alarm and
perormance monitoring. The total number o monitored states is much larger than traditional wireless
networks. In addition to ault monitoring, the perormance o normal traf c and network events are
correlated to anticipate problems beore actual aults are detected. Oten times an alarm notification
is triggered by a symptom o a system ailure and does not indicate the actual ault occurring within
the network. Fault management logic implemented in the NMS uses the overall state o the network
in its analysis and employs alarm correlation algorithms to provide invaluable insight into isolatingthe underlying problem. The NMS Fault Management capabilities include published SNMP MIBs and
the ability to provide a northbound interace or event orwarding to a 3rd party management system.
Subscriber profiles are expanding to include inormation like priorities and QoS as well as authorizations
based on applications and authentication capabilities. Oten, these expanded profiles are dierent
depending on the network being accessed, particularly in regards to the privileges being provided to
the users as they roam onto visited networks. User profiles may also be configured to support various
technologies and types o hardware. The Unified Administration System (UAS) provides a single point
o access to a centralized user database. The ability to configure a users authorized application set and
define the QoS parameters or the available applications in a single system simplifies and decreases
the amount o work required o the administrator. Personalities or LMR voice systems including
talkgroups, priority and preemption may be established in the UAS and automatically applied to push-
to-talk over broadband applications. In addition, the VIDA Broadband LTE core network includes
all the 3GPP standard roaming interaces to transer these parameters between roaming users and
networks to allow or ull interoperability with proper eature sets and capabilities.
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6. Priority Services
Public saety systems use priorities in order to define preemption behaviors between users within the
network. During times o network congestion, higher priority users should be granted access to the
network at the expense o lower priority users. When a higher priority user attempts to access a LTE
RAN already operating at maximum capacity, the higher priority user is granted access to the network
even i it means detaching the lower priority user. Once a higher priority user has obtained access to
the RAN, lower priority users are denied access to the network until the higher priority users vacates
the network and resources become available. The denial o access assumes that the lower priority users
cannot be handed over to an adjacent cell with lower utilization. In addition to managing the priority
o users, the network can also assign priority to applications in order to minimize the degradation o
applications which are susceptible to interruptions. At the same time, the network will assign Quality
o Service (QoS) to an application to ensure it runs correctly within the system. Application priorities
are assigned independent o the QoS parameters required to run the application.
The VIDA Broadband LTE network uses the LTE concept o Allocation and Retention Priority (ARP)
to define tiers o users and applications with varying priorities. An ARP is assigned to each Radio
Bearer (RB) that gets created over the air link. These priorities are used to configure call admission
control and allow higher priority users and applications the ability to preempt lower priority users and
applications. This preemption capability ensures higher priority users will obtain network resources
during periods o high congestion. ARP is not used or priority in scheduling and delivery o packets.
In addition to an ARP, each RB is associated with a QoS Class Identifier, a maximum bit rate and a
guaranteed bit rate. The QCI itsel is characterized by a bearer type, speciying guaranteed or non-
guaranteed bit rate, a priority used or setting scheduling and orwarding precedence, a delay budget
in milliseconds and an acceptable packet loss rate. These parameters taken together provide the
scheduler with the inormation it needs to orward data over the air link in the appropriate manner.
QCI ensures high priority applications will be allocated resources at the expense o lower priority
applications, and those resources will provide the service required or the application to run correctly
regardless o network congestion.
When subscriber profiles are administered within the network, their profiles include a specification
o allowed RB along with a set o Traf c Flow Templates (TFT). The TFT allows the administrator to
speciy IP header addresses and transport layer port numbers to be associated with a particular RB,
which in turn associates with a given QoS and priority. This inormation is then distributed to the HSS
and PCRF entities ensuring the proper handling o traf c throughout the VIDA CN and the LTE RAN.
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7. Harris Managed Services
In addition to providing the VIDA Broadband inrastructure, system engineering and deployment
services and ongoing maintenance services, Harris can also provide managed services or the on-going
operation o VIDA Broadband networks. Public Saety agencies may not view the operation o their
700 MHz broadband network as a core competency or may not want to incur the time and expense o
managing the network. For this reason, Harris can provide a wide range o assistance to ensure the
timely and successul deployment o the network.
The first level o managed services is the use o Harris personnel to operate the Core Network,
administer and provision users, and monitor the network perormance on a 24/7 basis. Operating
out o a Harris Network Operations Center, the Harris network management team provides access to
personnel experienced with all aspects o the network operation, including managing the backhaul,
the LTE RAN, the VIDA CN and, i necessary, an applications help desk.
The next level o managed services includes the use o a Harris Corporation-owned VIDA CN or
control o a customer-owned LTE RAN. By using the Harris VIDA CN or all network packet switching
and service provisioning, customers can reduce the overall cost o deployment o the network. The
use o the existing VIDA CN also means a aster deployment, as these critical acilities are already
constructed and operational. Public Saety agencies merely need to deploy the LTE RAN to be on the
air with mobile broadband services.
8. Broadband Application Support
The Harris VIDA Broadband networks have been developed to provide a scalable wide-area data platorm
or the delivery o mission critical applications to serve both first responders and other public service
customers including departments o transportation, public transit, and municipal-owned utilities.
The VIDA Broadband LTE system provides wide-area, mobile broadband coverage using the 700 MHz
Public Saety spectrum to support a nearly endless set o applications such as video surveillance, mobile
of ce and productivity, mission critical push-to-talk voice over broadband, situational awareness,
transit data, traf c control, and smart grid. Through the use o advanced QoS eatures available in
LTE, Harris has implemented an LTE solution that allows the simultaneous support o this wide array
o applications by a wide array o users on a single unified network. The Harris LTE network allows
or individual users and applications to be assigned air link priority and bandwidth through 3GPP QoS
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20|VIDA Broadband LTE
mechanisms. For example, a first responder could be allocated a high-priority low data-rate bearer or
mission critical PTT voice services, a second tier -priority high bandwidth bearer or streaming video
situational awareness, and a third low-priority bearer or mobile of ce and reporting applications.While the mobile broadband capabilities o the VIDA Broadband LTE network can support virtually
any existing or emerging IP-based sotware suite, there are ew classes o applications that are o
particular interest to Public Saety. This section highlights some o the key application areas and
eatures, and highlight how these applications can be enabled and implemented on the Harris network.
Mobile Data:
One o the key drivers or high bandwidth mission critical communications is the increasing need
or in-field data such as mug shots, streaming video, situational awareness, hazardous materials
inormation, etc. The VIDA Broadband LTE network supports a wide variety o Public Saety mobile
data applications through the use o an in-vehicle mobile terminal or vehicular-mounted laptop. This
mobile terminal can be connected to the 700 MHz network using an LTE air card or an external LTE
radio modem. A first responder in the field will have ull access to all network resources such as NCIC
databases, situational awareness video, mug shots, etc. In addition, critical field inormation such as
in-car video o a high-speed chase can be uploaded back to the dispatch center in real time.
Mission Critical Push To Talk Voice over Broadband:
One o the key dierentiators o the VIDA Broadband LTE system is that it is built upon the VIDA
core, which is a true end-end IP based voice-data system or Public Saety. Through the use o the
VIDA Voice/Data platorm, Public Saety users get access to all o their mission critical push-to-talk
voice services over the broadband 700 MHz network. For example, a scene commander who is using
a 700 MHz LTE portable terminal running the VIDA P25 voice application will be able to seamlessly
communicate with a P25 talk group, some o whom may be operating on voice over broadband and
some o whom are operating on P25 voice over narrowband Public Saety channels. In addition,
the VIDA Voice over Broadband solution augments the typical push-to-talk voice experience to add
additional situational awareness inormation, such as user location, to the trusted and proven push-
to-talk voice experience. Users with multimode (narrowband and broadband) radio can seamlessly
roam rom narrowband to broadband networks without any loss o the push-to-talk voice experience.
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Surveillance Video:
One o the major applications that are driving the need or broadband networks in Public Saety is
the use o surveillance video. As with most network applications, i a wired network is available,
it is preerable to carry surveillance video over a wired network due to videos high bandwidth
requirements. However, wired connectivity or video brings along a host o deployment problems,
including the need to dig city streets to field fiber or cable-based wired broadband networks. In many
cases, it is ar easier to implement a wireless solution when video is needed rom certain strategic
locations. The VIDA Broadband 4.9 GHz platorm provides an optimal solution or wireless video
surveillance solutions. This WiMAX-based platorm is optimized to provide high-capacity wide area
surveillance video using the 50 MHz available to Public Saety in the 4.9 GHz band. This 50 MHz
provides greater than 100 Mbps o capacity or wireless video. The VIDA Broadband LTE system
provides a wide-area mobile overlay which can be used to provide another 10-20 Mbps o capacity or
use in locations where 4.9 GHz coverage is problematic, or where mobile surveillance is required. As
the 4.9 GHz WiMAX platorm and the 700 MHz LTE platorm are both built on the VIDA core, a single
network can be used to configure, manage, and optimize the video deployment.
Traf c Control:
Modern advances in traf c management and traf c control allow or significant improvement
to resolve congestion problems and optimized movement o people and vehicles throughout
urban areas. These traf c management solutions provide relie rom daily traf c jams and are
used in case o natural disasters or incidents where large mass evacuations are required. In order
or these methods to be employed, however, a network must be provided to give low-latency
communications to all o the elements on the traf c system including the signals and sensors at
each intersection. The VIDA Broadband LTE network provides an excellent low-latency platorm
or providing network connectivity to traf c signals and sensors. As explained in Section 3 (LTE
Core) LTE provides low-latency communications and allows or a large number o clients per cell.
Through the use o QoS and bandwidth partitioning techniques, these traf c control applications
can be integrated into a multi-agency network. In most instances, the data rate requirementso traf c control will likely use less than 5% o the capacity o a 700 MHz broadband network.
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700 MHz LTE Mobile Terminals
The mobile terminals are intended to provide mobile data capability to
existing vehicular mounted laptops or other portable devices. These existing
devices will accept either internally or externally mounted 700 MHz LTEwireless modules. To provide this end-user data service, Harris is developing
an LTE module which can be used with other commercial MDTs.
700 MHz LTE User Devices
Private 700 MHz broadband networks enable an entirely new generation
o subscriber devices or Public Saety. These devices take some styling and
unctionality cues rom existing consumer-grade cellular smart phones, but
are optimized to operate in mission-critical situations. This means hardening
the case or rugged environmental use, sizing the control suraces or gloved
hand operation, and providing instant (and usable) access or Public Saety
eatures like PTT voice over broadband. Harris is applying our decades o
experience in Public Saety radios to develop a suite o user devices built to
meet the demanding requirements o Public Saety.
9. Public Saety Broadband User Equipment
The 700 MHz LTE technology that is embodied in the VIDA Broadband LTE network is an open
standard, and any compliant user equipment developed by other vendors will operate on the VIDA
Broadband LTE network. Harris is developing a ull portolio o Public Saety-grade user equipment
or the 700 MHz broadband networks. The user or subscriber equipment alls in three broad classes
o usage and orm actors:
700 MHz LTE mobile terminals these LTE radios (or modems) are connected or integrated
into MDTs, hardened Laptops and PDAs, and other types o portable equipment requiring mobile
broadband service.
700 MHz LTE user devices these devices have network access to support voice and data
services or end users.
700 MHz LTE fixed network devices these devices provide connectivity or fixed network
installations (such as wireless video cameras).
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700 MHz LTE Fixed Network Devices
Harris is also providing hardened 700 MHz LTE data devices or fixed
applications. These radios are encased in easy-to-install ruggedized
case aluminum enclosures. These devices also have external antennas
to optimize coverage and bandwidth. With the fixed network devices,
broadband applications such as wireless video surveillance can be installed
in any location that has radio coverage and minimal power requirements.
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Public Safety and Professional Communications | www.pspc.harris.com
221 Jefferson Ridge Parkway | Lynchburg VA USA 24501 | phone: 1-800-528-7711
Copyright 2010 Harris Corporation ECR-7708B
assuredcommunications
Public Saety and Proessional Communications
Harris Public Saety and Proessional Communications (PSPC) is a leading supplier o
assured communications systems and equipment or public saety, ederal, utility, commercial and
transportation markets, with products ranging rom the most advanced IP voice and data networks,
to industry leading multiband, multimode radios, to public saety-grade broadband video and data
solutions. Harris PSPC has over 80 years o experience supplying assured communications systems,
products and services and supports over 500 systems around the world. Harris is the leading global
supplier o secure radio communications and embedded high-grade encryption solutions or military,
government and commercial organizations.
About Harris Corporation
Harris is an international communications and inormation technology company serving government
and commercial markets in more than 150 countries. Headquartered in Melbourne, Florida,
the company has annual revenue o $5 billion and 15,000 employees including nearly 7,000
engineers and scientists. Harris is dedicated to developing best-in-class assured communications
products, systems, and services. Additional inormation about Harris Corporation is available at
www.harris.com.