In this second installment of mobile data security the author displays a series of advantages over power consumption and the use of the Wi-Fi system. By: Osvaldo Callegari*
Service technicians may be reluctant to adopt new technologies. The reason is that a tool should make its job easier and that it can fully use it. That is why mobile products must have a very wide output in training with the time necessary to train in the new solution.
It is helpful to start with at least two field technicians in the initial selection. One of them must be the one who is most comfortable with technology and who uses it often, the other must be the opposite end of the spectrum, someone who cannot accept change easily, even be reluctant to technology.
It is important to start with a beta to contemplate the reluctance to new trends and thus correct the deviations that arise. Once this stage is finished, we can say that the final system can be delivered.
If training is insufficient in staff, prior to full deployment it can result in a difficult transition period, although there are levels of different intensity for each particular segment. The ideal training should be mainly from the product supplier.
It is ideal for field service organizations to be able to solicit customer feedback during beta testing, once the mobile solution has been deployed to get customer feedback.
In addition, you can use mobile devices to manage surveys about work done. Satisfaction is with sales reps or any other aspect of the customer's interaction with the company.
A traditional consumer approach to a mobile solution requires a cell phone for voice, a mobile computer for data applications, and a GPS system. Purchasing and supporting all of these devices substantially increases the overall total cost of ownership. Unless you're looking for very limited functionality, an enterprise-class solution may be your best bet. It is usually integrated with robust voice and data.
Capture data such as barcode, signature capture, webcam and GPS are presented in a practical and resilient way.
Enterprise-grade applications are best suited for projects involving work in fields or production areas away from urbanization.
One of the clear advantages of enterprise-grade products is their scalability, which reduces the total costs of investment.
A no less important and transcendent issue is the energy saving in mobile devices, the great resolutive advantage in operation and data transactions.
A great significance has the energy savings in environmental pollution, since the less the equipment transmits, the less it pollutes. That is why the Wi-Fi Alliance has implemented within the expanded 802.16e standard the regulation of energy use in wireless systems. That is why through its statement we delve into the benefits and benefits provided by such regulation.
802.16e Standard: Energy Saving
Wi-Fi is rapidly expanding in its goals in the home, business, and public networks; and beyond laptops, desktop PCs, Personal Digital Assistants (PDAs), phones, cameras and other consumer electronics (CE) devices.
Many of the battery-powered ones possess even stricter power management requirements than laptops. E Running applications such as Voice over IP (VoIP), or video and audio together, do not support very long latencies.
These new devices and applications represent a huge opportunity for Wi-Fi, a technology designed to operate within an unlicensed spectrum, in a dynamic environment with a large number of client devices.
The Wi-Fi Alliance has taken a proactive position to enable a wider range of devices that benefit from Wi-Fi functionality through The Wi-Fi Certified for WMM and Wi-Fi Certified for WMM energy saving programs. WMM adds quality of service (QoS) to Wi-Fi networks. WMM Power Save is an enhancement of the Institute of Electrical and Electronics Engineers (IEEE) 802.11e contains an amendment that adds advanced power management functionality to WMM. Energy saving certification is optional for products that undergo WMM standardization.
The new WMM (Power Save) Power Saving is ideal for advanced mobile devices that require power-saving mechanisms for extended battery life and for applications such as VoIP, where the user experience degrades rapidly as latency increases. Power saving WMM was designed for mobile and wireless phones that support VoIP.
In addition, laptops, PDAs, video game consoles, audio players, peripheral devices: such as keyboards and mice, headphones, sensors and controllers would also benefit from it.
WMM Power Save is an improvement over energy saving standards with the support of Wi-Fi network mechanisms. It allows devices to spend more time in a "sleep" state, which consumes less power while improving performance, minimizing transmission latency (Figure 1).
Moreover, WMM energy saving promises to be more efficient and flexible across air, transmission and power management by allowing individual requests to control capacity and latency requirements.
Three conditions must be met for a Wi-Fi client to take advantage of the WMM Power Save:
1. The customer is Wi-Fi Certified for WMM power saving.
2. The Wi-Fi Certified access point for power saving WMM.
3. WMM Power Save latency sensitive applications.
As a result, access point vendors and mobile clients need to be aware of the demand for WMM energy savings and the advantages it brings to mobile customers. They must make plans for WMM as energy saving certification on new and existing products.
It is equally important for application developers to understand how WMM Power Save can improve application performance and to add support for it in new product releases.
The initial success of the Wi-Fi connection was largely linked to its ability to provide data connectivity wirelessly for laptops, and it had a noticeable impact on the models of use: the laptop user was no longer tied to an Ethernet plug on the wall, instead he can freely choose his workplace, check mail or browse the Internet.
Mobile devices such as cell phones, smartphones or PDAs also provide a similar experience of freedom from a specific location, but in most cases the functionality is limited to online applications (calendar, contacts, games stored on the device), limited internet access or cellular voice services.
Both users and manufacturers need to see the great potential existing in the convergence of these two types of devices: a mobile device that supports portability and mobility, while enabling broadband Internet access.
Wi-Fi makes this possible, as long as the user is within the coverage area of a Wi-Fi network. With the rapid expansion of these networks in the home, businesses and public spaces it is increasingly likely that users can be within range of a Wi-Fi network.
Energy saving
A major challenge to integrating Wi-Fi into mobile devices is its impact on battery life.
Energy-saving WMM addresses the challenge by offering advanced power management mechanisms that have been optimized for mobile devices. It was introduced in response to demand from manufacturers, application developers and service providers who want to take advantage of the Wi-Fi opportunity for new capabilities and services.
Benefits in applications and devices
WMM power savings have been optimized for mobile devices and applications that have strict latency requirements, in turn benefiting a wider range of devices and applications as it offers a more efficient and flexible way to manage transmission between an access point and a client. As a result, it's not just about battery life, but that performance can be improved.
The application-based approach used in energy-saving WMM allows individual applications to decide how often the customer should communicate with the access point and how long it can remain in a "dozing" state.
The Wi-Fi controller on the client sets the intervals to be suspended or dormant, regardless of which applications are active. To save more energy, the customer can opt for a longer period of dozing, but doing so can degrade the performance of some applications. To improve performance, the customer can poll the access point more frequently, but it consumes more power.
Tighter control over the transmission time with the access point and active front doze management (receive and transmit) gives the states of battery-powered devices greater flexibility in power consumption management and longer battery life. Mobile phones, smartphones, cordless phones and PDAs are expected to benefit from this standard.
Laptops will be increasingly able to take advantage of this mechanism, VoIP and video and audio streaming will be used to a greater extent.
In particular, the success of Skype and other VoIP providers like Vonage has promoted the use of VoIP, both from home or office and on the go, to avoid high roaming fees.
Fountain: Trademarks and products are registered:
Wi-Fi®, Wi-Fi Alliance ®, Wi-Fi LOGO, Wi-Fi ZONE logo, Wi-Fi CERTIFIED™, WMM™, WPA™, WPA2™, Wi-Fi ZONE™, Wi-Fi CERTIFIED logo, Wi-Fi Alliance logo are registered trademarks of the Wi-Fi Alliance. Some of the support in the guide corresponds to Motorola™ services
*For inquiries or concerns about mobile projects you can write to the author at the email [email protected]
