"There are two definitions for wireless LAN roaming:
Internal Roaming (1): The Mobile Station (MS) moves from one access point (AP) to another AP within a home network because the signal strength is too weak. An authentication server (RADIUS) performs the re-authentication of MS via 802.1x (e.g. with PEAP). The billing of QoS is in the home network. A Mobile Station roaming from one access point to another often interrupts the flow of data among the Mobile Station and an application connected to the network. The Mobile Station, for instance, periodically monitors the presence of alternative access points (ones that will provide a better connection). At some point, based on proprietary mechanisms, the Mobile Station decides to re-associate with an access point having a stronger wireless signal. The Mobile Station, however, may lose a connection with an access point before associating with another access point. In order to provide reliable connections with applications, the Mobile Station must generally include software that provides session persistence.
External Roaming (2): The MS (client) moves into a WLAN of another Wireless Internet Service Provider (WISP) and takes their services (Hotspot). The user can independently of his home network use another foreign network, if this is open for visitors. There must be special authentication and billing systems for mobile services in a foreign network." [Wireless LAN. Wikipedia]
This Cisco roaming wireless local area network diagram example was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Cisco Network Diagrams solution from the Computer and Networks area of ConceptDraw Solution Park.
Internal Roaming (1): The Mobile Station (MS) moves from one access point (AP) to another AP within a home network because the signal strength is too weak. An authentication server (RADIUS) performs the re-authentication of MS via 802.1x (e.g. with PEAP). The billing of QoS is in the home network. A Mobile Station roaming from one access point to another often interrupts the flow of data among the Mobile Station and an application connected to the network. The Mobile Station, for instance, periodically monitors the presence of alternative access points (ones that will provide a better connection). At some point, based on proprietary mechanisms, the Mobile Station decides to re-associate with an access point having a stronger wireless signal. The Mobile Station, however, may lose a connection with an access point before associating with another access point. In order to provide reliable connections with applications, the Mobile Station must generally include software that provides session persistence.
External Roaming (2): The MS (client) moves into a WLAN of another Wireless Internet Service Provider (WISP) and takes their services (Hotspot). The user can independently of his home network use another foreign network, if this is open for visitors. There must be special authentication and billing systems for mobile services in a foreign network." [Wireless LAN. Wikipedia]
This Cisco roaming wireless local area network diagram example was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Cisco Network Diagrams solution from the Computer and Networks area of ConceptDraw Solution Park.
Used Solutions
"Long-range Wi-Fi is used for low-cost, unregulated point-to-point computer network connections, as an alternative to other fixed wireless, cellular networks or satellite Internet access.
Wi-Fi networks have a range that's limited by the transmission power, antenna type, the location they're used in, and the environment. A typical wireless router in an indoor point-to-multipoint arrangement using 802.11b or 802.11g and a stock antenna might have a range of 32 metres (105 ft). Outdoor point-to-point arrangements, through use of directional antennas, can be extended with many kilometers between stations." [Long-range Wi-Fi. Wikipedia]
The wireless network diagram example "Long-range Wi-Fi network diagram" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Wireless Networks solution from the Computer and Networks area of ConceptDraw Solution Park.
Wi-Fi networks have a range that's limited by the transmission power, antenna type, the location they're used in, and the environment. A typical wireless router in an indoor point-to-multipoint arrangement using 802.11b or 802.11g and a stock antenna might have a range of 32 metres (105 ft). Outdoor point-to-point arrangements, through use of directional antennas, can be extended with many kilometers between stations." [Long-range Wi-Fi. Wikipedia]
The wireless network diagram example "Long-range Wi-Fi network diagram" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Wireless Networks solution from the Computer and Networks area of ConceptDraw Solution Park.
Telecommunication Network Diagrams
Telecommunication Network Diagrams solution extends ConceptDraw PRO software with samples, templates, and great collection of vector stencils to help the specialists in a field of networks and telecommunications, as well as other users to create Computer systems networking and Telecommunication network diagrams for various fields, to organize the work of call centers, to design the GPRS networks and GPS navigational systems, mobile, satellite and hybrid communication networks, to construct the mobile TV networks and wireless broadband networks.
"Mobile data offloading is the use of complementary network technologies for delivering data originally targeted for cellular networks. Rules triggering the mobile offloading action can be set by either an end-user (mobile subscriber) or an operator. The code operating on the rules resides in an end-user device, in a server, or is divided between the two. End users do data offloading for data service cost control and the availability of higher bandwidth. Operators do it to ease congestion of cellular networks. The main complementary network technologies used for mobile data offloading are Wi-Fi, femtocell and Integrated Mobile Broadcast." [Mobile data offloading. Wikipedia]
The example "Wireless network diagram - Mobile data offloading" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Wireless Networks solution from the Computer and Networks area of ConceptDraw Solution Park.
The example "Wireless network diagram - Mobile data offloading" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Wireless Networks solution from the Computer and Networks area of ConceptDraw Solution Park.
The vector stencils library "Telecommunication networks" contains 32 clipart images of telecommunication network devices and equipment for drawing telecom network diagrams.
"A telecommunications network is a collection of terminal nodes, links and any intermediate nodes which are connected so as to enable telecommunication between the terminals.
The transmission links connect the nodes together. The nodes use circuit switching, message switching or packet switching to pass the signal through the correct links and nodes to reach the correct destination terminal.
Each terminal in the network usually has a unique address so messages or connections can be routed to the correct recipients. The collection of addresses in the network is called the address space." [Telecommunications network. Wikipedia]
The clip art example "Telecommunication networks - Vector stencils library" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Telecommunication Network Diagrams solution from the Computer and Networks area of ConceptDraw Solution Park.
"A telecommunications network is a collection of terminal nodes, links and any intermediate nodes which are connected so as to enable telecommunication between the terminals.
The transmission links connect the nodes together. The nodes use circuit switching, message switching or packet switching to pass the signal through the correct links and nodes to reach the correct destination terminal.
Each terminal in the network usually has a unique address so messages or connections can be routed to the correct recipients. The collection of addresses in the network is called the address space." [Telecommunications network. Wikipedia]
The clip art example "Telecommunication networks - Vector stencils library" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Telecommunication Network Diagrams solution from the Computer and Networks area of ConceptDraw Solution Park.
The vector stencils library "Wireless networks" contains 82 icon symbols for drawing wireless computer network diagrams and equipment layout plans.
"A wireless network is any type of computer network that uses wireless data connections for connecting network nodes.
Wireless networking is a method by which homes, telecommunications networks and enterprise (business) installations avoid the costly process of introducing cables into a building, or as a connection between various equipment locations.
Wireless telecommunications networks are generally implemented and administered using radio communication. This implementation takes place at the physical level (layer) of the OSI model network structure.
Examples of wireless networks include cell phone networks, Wi-Fi local networks and terrestrial microwave networks." [Wireless network. Wikipedia]
The clip art example "Wireless networks - Vector stencils library" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Wireless Networks solution from the Computer and Networks area of ConceptDraw Solution Park.
www.conceptdraw.com/ solution-park/ wireless-networks
"A wireless network is any type of computer network that uses wireless data connections for connecting network nodes.
Wireless networking is a method by which homes, telecommunications networks and enterprise (business) installations avoid the costly process of introducing cables into a building, or as a connection between various equipment locations.
Wireless telecommunications networks are generally implemented and administered using radio communication. This implementation takes place at the physical level (layer) of the OSI model network structure.
Examples of wireless networks include cell phone networks, Wi-Fi local networks and terrestrial microwave networks." [Wireless network. Wikipedia]
The clip art example "Wireless networks - Vector stencils library" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Wireless Networks solution from the Computer and Networks area of ConceptDraw Solution Park.
www.conceptdraw.com/ solution-park/ wireless-networks
This global vehicular network diagram sample represents the independent regional telematics network.
"Telematics typically is any integrated use of telecommunications and informatics, also known as ICT (Information and Communications Technology). Hence the application of telematics is with any of the following:
(1) The technology of sending, receiving and storing information via telecommunication devices in conjunction with affecting control on remote objects.
(2) The integrated use of telecommunications and informatics, for application in vehicles and with control of vehicles on the move.
(3) Telematics includes but is not limited to Global Positioning System technology integrated with computers and mobile communications technology in automotive navigation systems. ...
Practical applications of vehicle telematics:
1. Vehicle tracking is a way of monitoring the location, movements, status and behaviour of a vehicle or fleet of vehicles. ...
2. Trailer tracking is the technology of tracking the movements and position of an articulated vehicle's trailer unit...
3. Container tracking. Freight containers can be tracked by GPS...
4. Cold store freight trailers ... used to deliver fresh or frozen foods are ... incorporating telematics to gather time-series data on the temperature inside the cargo container...
5. Fleet management includes the management of ships and or motor vehicles such as cars, vans and trucks. Fleet ... Management can include ... vehicle telematics (tracking and diagnostics)...
6. Satellite navigation in the context of vehicle telematics is the technology of using a GPS and electronic mapping tool to enable the driver of a vehicle to locate a position, plan a route and navigate a journey.
7. Mobile data is the use of wireless data communications using radio waves to send and receive real time computer data to, from and between devices used by field based personnel. ...
8. Wireless vehicle safety communications telematics aid in car safety and road safety. ...
9. Emergency warning system for vehicles. Telematics ... are self-orientating open network architecture structures of variable programmable intelligent beacons ... to accord ... warning information with surrounding vehicles in the vicinity of travel, intra-vehicle, and infrastructure. ...
10. Intelligent vehicle technologies. Telematics comprise electronic ... devices ... to provide precision repeatability functions ... emergency warning validation performance reconstruction. ...
11. Car clubs. Telematics-enabled computers allow organizers to track members' usage and bill them on a pay-as-you-drive basis. ...
12. Auto insurance. The basic idea of telematic auto insurance is that a driver's behavior is monitored directly while the person drives and this information is transmitted to an insurance company." [Telematics. Wikipedia]
The example "Independent regional networks diagram" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Vehicular Networking solution from the Computer and Networks area of ConceptDraw Solution Park.
"Telematics typically is any integrated use of telecommunications and informatics, also known as ICT (Information and Communications Technology). Hence the application of telematics is with any of the following:
(1) The technology of sending, receiving and storing information via telecommunication devices in conjunction with affecting control on remote objects.
(2) The integrated use of telecommunications and informatics, for application in vehicles and with control of vehicles on the move.
(3) Telematics includes but is not limited to Global Positioning System technology integrated with computers and mobile communications technology in automotive navigation systems. ...
Practical applications of vehicle telematics:
1. Vehicle tracking is a way of monitoring the location, movements, status and behaviour of a vehicle or fleet of vehicles. ...
2. Trailer tracking is the technology of tracking the movements and position of an articulated vehicle's trailer unit...
3. Container tracking. Freight containers can be tracked by GPS...
4. Cold store freight trailers ... used to deliver fresh or frozen foods are ... incorporating telematics to gather time-series data on the temperature inside the cargo container...
5. Fleet management includes the management of ships and or motor vehicles such as cars, vans and trucks. Fleet ... Management can include ... vehicle telematics (tracking and diagnostics)...
6. Satellite navigation in the context of vehicle telematics is the technology of using a GPS and electronic mapping tool to enable the driver of a vehicle to locate a position, plan a route and navigate a journey.
7. Mobile data is the use of wireless data communications using radio waves to send and receive real time computer data to, from and between devices used by field based personnel. ...
8. Wireless vehicle safety communications telematics aid in car safety and road safety. ...
9. Emergency warning system for vehicles. Telematics ... are self-orientating open network architecture structures of variable programmable intelligent beacons ... to accord ... warning information with surrounding vehicles in the vicinity of travel, intra-vehicle, and infrastructure. ...
10. Intelligent vehicle technologies. Telematics comprise electronic ... devices ... to provide precision repeatability functions ... emergency warning validation performance reconstruction. ...
11. Car clubs. Telematics-enabled computers allow organizers to track members' usage and bill them on a pay-as-you-drive basis. ...
12. Auto insurance. The basic idea of telematic auto insurance is that a driver's behavior is monitored directly while the person drives and this information is transmitted to an insurance company." [Telematics. Wikipedia]
The example "Independent regional networks diagram" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Vehicular Networking solution from the Computer and Networks area of ConceptDraw Solution Park.
"Mobile IPTV is a technology that enables users to transmit and receive multimedia traffic including television signal, video, audio, text and graphic services through IP-based the wired and wireless networks with support for Quality of Service/ QoE, security, mobility, and interactive functions. Through Mobile IPTV, users can enjoy IPTV services anywhere and even while on the move." [Mobile IPTV. Wikipedia]
This mobile web-based TV network diagram example was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Telecommunication Network Diagrams solution from the Computer and Networks area of ConceptDraw Solution Park.
This mobile web-based TV network diagram example was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Telecommunication Network Diagrams solution from the Computer and Networks area of ConceptDraw Solution Park.
The vector stencils library "Tranzeo" contains 13 clipart icons of Tranzeo devices for drawing computer network diagrams and telecommunication equipment layouts.
"Tranzeo Wireless Technologies Inc. ... leads the wireless broadband industry as a premier manufacturer of high-performance wireless network equipment...
Tranzeo's full spectrum of point-to-point and point-to-multipoint radios, WiMAX equipment, and mesh network solutions are designed for wireless internet service providers, governments, campuses, military, carriers, enterprise customers, and systems integrators..." [tranzeo.com]
The clip art example "Tranzeo - Vector stencils library" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Telecommunication Network Diagrams solution from the Computer and Networks area of ConceptDraw Solution Park.
www.conceptdraw.com/ solution-park/ computer-networks-telecommunication
"Tranzeo Wireless Technologies Inc. ... leads the wireless broadband industry as a premier manufacturer of high-performance wireless network equipment...
Tranzeo's full spectrum of point-to-point and point-to-multipoint radios, WiMAX equipment, and mesh network solutions are designed for wireless internet service providers, governments, campuses, military, carriers, enterprise customers, and systems integrators..." [tranzeo.com]
The clip art example "Tranzeo - Vector stencils library" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Telecommunication Network Diagrams solution from the Computer and Networks area of ConceptDraw Solution Park.
www.conceptdraw.com/ solution-park/ computer-networks-telecommunication
"Satellite television is television programming delivered by the means of communications satellite and received by an outdoor antenna, usually a parabolic reflector generally referred to as a satellite dish, and as far as household usage is concerned, a satellite receiver either in the form of an external set-top box or a satellite tuner module built into a TV set. Satellite TV tuners are also available as a card or a USB peripheral to be attached to a personal computer. In many areas of the world satellite television provides a wide range of channels and services, often to areas that are not serviced by terrestrial or cable providers.
Direct-broadcast satellite television comes to the general public in two distinct flavors - analog and digital. This necessitates either having an analog satellite receiver or a digital satellite receiver. Analog satellite television is being replaced by digital satellite television and the latter is becoming available in a better quality known as high-definition television." [Satellite television. Wikipedia]
"Mobile television is television watched on a small handheld or mobile device. It includes pay TV service delivered via mobile phone networks or received free-to-air via terrestrial television stations. Regular broadcast standards or special mobile TV transmission formats can be used. Additional features include downloading TV programs and podcasts from the internet and the ability to store programming for later viewing. ...
Mobile TV is among the features provided by many 3G phones." [Mobile television. Wikipedia]
"MobiTV, Inc. ... is a provider of end-to-end mobile media solutions. In 2011, the cloud-based MobiTV converged media platform delivered 1.6 billion minutes of live TV, video-on-demand and downloaded content for offline viewing to all tier-one wireless carriers and major mobile operating systems in the United States. ...
MobiTV furnishes programming from more than 40 television channels, offering live news and sports and a variety of full-episode on-demand shows for streaming or download on mobile devices, tablets, personal computers and other Internet-enabled consumer electronics.
MobiTV-powered TV services, which carry the operator’s brand, are accessible on hundreds of devices across multiple wireless carrier partners. ...
MobiTV’s converged media platform is an end-to-end managed service comprising components that work together to securely manage, deliver and play back video across devices both inside and outside the home." [MobiTV. Wikipedia]
This mobile satellite TV network diagram example was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Telecommunication Network Diagrams solution from the Computer and Networks area of ConceptDraw Solution Park.
Direct-broadcast satellite television comes to the general public in two distinct flavors - analog and digital. This necessitates either having an analog satellite receiver or a digital satellite receiver. Analog satellite television is being replaced by digital satellite television and the latter is becoming available in a better quality known as high-definition television." [Satellite television. Wikipedia]
"Mobile television is television watched on a small handheld or mobile device. It includes pay TV service delivered via mobile phone networks or received free-to-air via terrestrial television stations. Regular broadcast standards or special mobile TV transmission formats can be used. Additional features include downloading TV programs and podcasts from the internet and the ability to store programming for later viewing. ...
Mobile TV is among the features provided by many 3G phones." [Mobile television. Wikipedia]
"MobiTV, Inc. ... is a provider of end-to-end mobile media solutions. In 2011, the cloud-based MobiTV converged media platform delivered 1.6 billion minutes of live TV, video-on-demand and downloaded content for offline viewing to all tier-one wireless carriers and major mobile operating systems in the United States. ...
MobiTV furnishes programming from more than 40 television channels, offering live news and sports and a variety of full-episode on-demand shows for streaming or download on mobile devices, tablets, personal computers and other Internet-enabled consumer electronics.
MobiTV-powered TV services, which carry the operator’s brand, are accessible on hundreds of devices across multiple wireless carrier partners. ...
MobiTV’s converged media platform is an end-to-end managed service comprising components that work together to securely manage, deliver and play back video across devices both inside and outside the home." [MobiTV. Wikipedia]
This mobile satellite TV network diagram example was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Telecommunication Network Diagrams solution from the Computer and Networks area of ConceptDraw Solution Park.
"Mobile satellite systems help connect remote regions, vehicles, ships, people and aircraft to other parts of the world and/ or other mobile or stationary communications units, in addition to serving as navigation systems." [Satellite. Mobile satellite systems. Wikipedia]
"A communications satellite or comsat is an artificial satellite sent to space for the purpose of telecommunications.
... communications satellites ... are ... used for mobile applications such as communications to ships, vehicles, planes and hand-held terminals, and for TV and radio broadcasting." [Communications satellite. Wikipedia]
This mobile satellite communication network diagram was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Telecommunication Network Diagrams solution from the Computer and Networks area of ConceptDraw Solution Park.
"A communications satellite or comsat is an artificial satellite sent to space for the purpose of telecommunications.
... communications satellites ... are ... used for mobile applications such as communications to ships, vehicles, planes and hand-held terminals, and for TV and radio broadcasting." [Communications satellite. Wikipedia]
This mobile satellite communication network diagram was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Telecommunication Network Diagrams solution from the Computer and Networks area of ConceptDraw Solution Park.
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