{"id":691497,"date":"2024-11-06T05:25:54","date_gmt":"2024-11-06T05:25:54","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/tia-4973-2112014\/"},"modified":"2024-11-06T05:25:54","modified_gmt":"2024-11-06T05:25:54","slug":"tia-4973-2112014","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/tia\/tia-4973-2112014\/","title":{"rendered":"TIA-4973.211:2014"},"content":{"rendered":"

Scope (Informative)<\/strong><\/p>\n

Priority and QoS refers to the access and control of system
\nresources; especially with respect to a wireless broadband network.
\nWhile the lion's share of attention is paid in this specification
\nto wireless broadband network resources, this specification is not
\nlimited thereto. Transport network, backhaul, and interconnected
\nsystems are all considered.<\/p>\n

The public safety broadband network is a challenging
\nenvironment. Various types of users (e.g., first responders, second
\nresponders, etc.) with various disciplines (police, fire, EMS ,
\netc.) and all types of applications (voice, video, data) all share
\nthe same resources. This creates an unprecedented environment for
\nthe management of resources for a public safety system.
\nConventional LMR systems have dedicated resources for Push-to-Talk,
\nand there is traditionally only limited sharing of a system between
\ndisciplines. Trunked LMR systems improve sharing between
\ndisciplines, but still don't have to share resources like LTE
\nall-IP users.<\/p>\n

Priority, as used herein, refers to the ability for a given user
\nto access and obtain resources from the broadband network. Once a
\nuser has been granted resources by the system, quality of service
\n(QoS) refers to the specific attributes (e.g., latency, packet loss
\nrate) that govern the experience of content exchange with the user.
\nUsers of the public safety broadband network need a consistent and
\ndeterministic service for real-time management of priority and
\nQoS.<\/p>\n

Commercial cellular network operators typically offer elevated
\npriority to premium customers on a statically assigned basis (i.e.,
\nthe customer's priority only changes with changes in their
\nsubscription level). While this is sufficient for commercial use,
\npublic safety users require priority services that are
\nsituational.<\/i> The sheriff at a traffic stop does not
\nrequire the same priority on the broadband network as a patrolman
\nexchanging gunfire at a bank robbery. Preemption of lower-priority
\nresources is essential in order to provide resources to the highest
\npriority incidents.<\/p>\n

Mission critical communications require immediate access to
\nresources. Many factors can impact the resources available to a
\ngiven traffic flow: number of users, number of incidents, distance
\nto cell antenna, interference, etc. Further, many factors can
\ncontribute to wireless congestion at a cell. For this reason,
\nPriority and QoS capabilities for public safety need to consider
\nthe dynamic situational aspects of responders. It is insufficient
\nto statically assign a priority to a given responder that will be
\nsufficient for all situations.<\/p>\n

Another important aspect of priority and QoS is that it is based
\non the user and not a given device. In the commercial cellular
\nworld, users obtain a personal device and that device and its
\ntelephone number are assumed to be associated with a user. In the
\npublic safety world, devices are re-used across shifts (e.g.,
\ntablets, radios, fire trucks, etc.). It is not realistic to assume
\nthat all public safety broadband devices are personally issued. For
\nexample, an incident commander can pick up a shared laptop
\nbelonging to her agency and sign-in, or can be assigned to a
\nvehicle having a fixed-mount laptop in the vehicle. Therefore,
\npublic safety priority and QoS needs to be derived for a user also
\ntaking into account the application(s) that he\/she is currently
\ninvoking, and applied to the devices currently being used by the
\nuser. The type of user is one of many factors affecting a
\nSubscriber's overall priority and QoS state. See sections 3.1.3 and
\n3.1.4 for more information.<\/p>\n

Responders are trained today with procedures that have taken
\ndecades to perfect. Any service provided to responders has to
\ncomplement their existing workflow. This service attempts to avoid
\ndistracting a user from the mission by requiring him\/her to enter a
\nbroadband maintenance terminal or to become aware of the broadband
\nnetwork's detailed prioritization parameters. In this
\nspecification, prioritization is integrated into usage patterns
\nfamiliar to the user (e.g., the emergency button).<\/p>\n

Applications can be deployed by various domains utilizing the
\nnetwork. For example, telephony might be deployed nationally and
\npush-to-talk might be deployed regionally by a state (e.g., in a
\nseparate APN). The priority and QoS capabilities described herein
\nare intended to consistently govern resources for all applications,
\nregardless of the entity (national, regional, local) that is
\noperating the application. This specification defines a Priority
\nand QoS Control Service (PQCS) to address these complex and varied
\nneeds. The PQCS:<\/p>\n

\u2022 Allows Subscribers, other users, and other services to control
\nand coordinate dynamic priority changes;<\/p>\n

\u2022 Translates a coherent model of PS state (responder emergency,
\netc.) to service effecting controls in a Subscriber's transport
\nnetwork;<\/p>\n

\u2022 Is consistent with the principles expressed by the NPSTC Local
\nControl Task Group [4] the Priority and QoS Task Group [3] and the
\nBroadband Data Protocol Standards Overview [5]; and,<\/p>\n

\u2022 Supports "all IP" broadband networks (e.g., LTE). The PQCS
\ndoes not support circuit-switched networks.<\/p>\n

Scope (Normative)<\/strong><\/p>\n

This document pertains to the control of Priority and Quality of
\nService (QoS) for communications on a wireless broadband network
\nusing Internet Protocols (IP). This document describes requirements
\nfor a mission critical Priority and QoS Control Service for a
\nwireless broadband network. The network and its resources are
\nassumed to be shared by different classes of users, and different
\ntypes of applications. Prioritization is the ability to determine
\nwhich resource requests should be granted and which granted
\nresources should be discontinued or preempted. This document
\nincludes requirements to determine a user's default priority on the
\nbroadband network, and also provides requirements for dynamic
\nprioritization changes to meet situational needs. Quality of
\nService is the ability to ensure that IP packet flows associated
\nwith different applications satisfy performance objectives needed
\nfor the applications to operate. The requirements contained herein
\nallow an operator to define consistent and deterministic policies
\nto moderate usage of the shared wireless broadband network.
\nRequirements are further provided for end-users and applications to
\ndynamically influence policy selection.<\/p>\n","protected":false},"excerpt":{"rendered":"

Requirements for the Mission Critical Priority and QoS Control Service<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
TIA<\/b><\/a><\/td>\n2014<\/td>\n48<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":691507,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2646],"product_tag":[],"class_list":{"0":"post-691497","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-tia","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/691497","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/691507"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=691497"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=691497"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=691497"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}