Five "arrogant" wireless technology projects

Since the development of wireless technology, many technologies have gradually declined, and new wireless technologies have attracted more people's attention. Follow this article to learn about the popular wireless technology projects. We hope that the content of this article will help you understand the current technological development trend.

Wireless technology project 1. A better way to provide urban wireless services

Over the past few years, many notable Wi-Fi city projects have failed. While reflecting on this, the industry wants to learn more about alternative solutions that can provide extensive Wireless Access for cities. Researchers at the University of Cambridge and the Massachusetts Institute of Technology in the United States said the secret to success may be the use of Wi-Fi access points that are already ubiquitous in many cities, and form these access points into a dense network.

The researchers proposed a concept in a paper titled "Building ubiquitous Wi-Fi access within the city, allow the owner of the current and future personal Wi-Fi networks to agree to access Valid users. The transmission stream of the accessors will be transmitted securely over the network and the owner is not liable for this. The researchers said: "We propose this economically feasible solution to replace the practices of investing millions of dollars in new infrastructure construction ."

This article said: "We believe that ubiquitous Wi-Fi access in cities can be built at nearly zero cost. Because the network base already exists, most urban residents have broadband connections and personal wireless APs at home ." In addition, the researchers suggest setting up an organization consisting of a trusted Wi-Fi access point that can deploy gateways and servers to ensure the security of the entire intensive network.

Wireless technology project 2. Treat wireless networks in a different way from wired networks

The debate over the use of wired networks or wireless networks is still in progress, but the debate below may be a little-known-the use of old-fashioned wired network technology to support wireless networks, or a new architecture specifically suited to wireless networks. In a paper entitled "MIXIT: Network-connected wireless channels" published in September by MIT researchers Jin Katti and Dina Katabi, both scholars have shown their attitudes towards supporting the latter.

Two researchers claim that their solution, MIXIT, Supports Wireless broadcast and utilizes spatial and temporal diversity, based on the inherent characteristics of wireless media, the network throughput can be increased by four times compared with the most advanced random routing solution ). In addition, random routing also faces a problem, that is, even a few bits of error transmission may also discard the entire packet. They said these random routing schemes work well in a wired network, but they do not work in a wireless network.

Wireless technology project 3. Find sensor networks with higher energy efficiency

Network latency is not all bad. Three researchers at the University of California, Berkeley, said that beauty is in the midst of a delay-you need to wait for those networked sensors, until they can send the data back to the program or personnel who need to access the data. However, this latency will not satisfy all sensor network users, such as those that rely on polling and schedule protocols.

The researchers admitted in an article entitled "delay may lead to a longer and more useful life" about improving the energy efficiency of sensor networks, people put a lot of attention on the use of improved operating systems, storage and communication devices. Their research focuses on reducing synchronization costs and using batch processing data and compression without affecting system users. While discovering the potential benefits of delayed communication, they also discovered the challenges facing the network, such as how to establish a routing scheme immediately after the sensor is awakened.

Wireless technology project 4. Adaptive battlefield wireless plan of DARPA

DARPA is the Department of Defense Advanced Research, A new research project at the agency is attempting to use the most advanced wireless technology to build a tactical radio network that can be adaptive to allow soldiers to maintain mutual connectivity on the battlefield.

The WAND wireless adaptive network development project will use commercial radio components to replace custom radio components and use a variety of software technologies and algorithms, many of which have just matured ). A large-scale point-to-point network can be formed through some radio devices with a walkie talkie size of $500. It is reported that this network can change the frequency and avoid interference, to cope with various events that may damage wireless communication. WAND is an attempt to build a low-cost radio device using SMART network software. It can make communication everywhere on the battlefield, and the communication efficiency is higher and more reliable.

Wireless Technology Project 5. Security Architecture for emergency personnel surfaced

Finally, let's look at a wireless research project for medical first aid. Princeton University researchers said they proposed a new way to securely deliver critical rescue information to emergency personnel in response to natural disasters and terrorist attacks.

This new architecture supports what Ruby Lee, professor of Electronic Engineering at Princeton University, calls "instantaneous trust, that is, the ability to securely exchange sensitive data such as floor layout of buildings or personal medical information as needed. Lee, who now leads the Princeton multimedia and security architecture lab PALMS, previously worked as a computer designer for HP. Lee and Jeffrey Dwoskin, graduate students, wrote a paper titled "Hardware-level trust and instantaneous trust in Security Key Management. This article describes the so-called "device Root Key" and "storage root hash" elements in devices such as handheld computers used by emergency personnel, emergency personnel can access the information temporarily.