7708-vida broadband lte web tcm27-13506

7/31/2019 7708-VIDA Broadband LTE Web Tcm27-13506

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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

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VIDA Broadband LTE | 3


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4|VIDA Broadband LTE

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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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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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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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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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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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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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.

7708-vida broadband lte web tcm27-13506

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