Dear Khalil ,

The rapidly increasing number of mobile devices, voluminous data, and higher data rate are pushing to rethink the current generation of the cellular mobile communication. The next or fifth generation (5G) cellular networks are expected to meet high-end requirements.

https://arxiv.org/pdf/1511.01643.pdf

Dear Khalil ,

The rapidly increasing number of mobile devices, voluminous data, and higher data rate are pushing to rethink the current generation of the cellular mobile communication. The next or fifth generation (5G) cellular networks are expected to meet high-end requirements.

https://arxiv.org/pdf/1511.01643.pdf

Dear Davood,

Thank you so much for you reply, I will have a look at the paper.

Warm Regards

My team had produced numerous papers in industrial real time applications. We mainly used Wi-Fi and Ethernet network (Work Cells each around 3x3). Also ABB had a similar configuration using modified bluetooth. 

Dear Esraa,

Thank you for your reply, I checked your paper, "WiFi Implementation of Wireless Networked Control Systems", and it is conveys important information.

Regards,

Dr. Khalil,

In industry in the US, you can say there are two different types of wireless control. Local and remote control. Local control means to connect local equipments of a control process via wireless network, while remote control describes the use of the internet with a wireless method to gain access to a control process' equipments to perform either control or data acquisition. For local control, WiFi is used extensively in the US industry, while for remote control, they use either WiFi or cellular mobile communication networks.

I hope that gives you an idea about what US industry uses for wireless control. 

Dear Ahmed,

Thank you for your answer, yes the local networks are what I mean.

Real-time applications are sensitive to latency (the time it takes for a packet to travel from point A to point B) and jitter (variation in packet arrival time). When media is streamed – for example, watching a YouTube video or listening to a podcast – arriving packets can be buffered to compensate for latency and jitter. However, real-time applications like voice calls, video conferencing, instant messaging, unified communication, and on-line gaming cannot depend upon buffers to smooth over those network "speed bumps." Real-time application users expect immediate communication, without odd drop-outs or lags in what they see and hear. Under the covers, this requires the ability to send packets frequently, at fixed intervals, with consistently fast delivery. Voice over IP always sends short fixed-length packets that carry digitized voice, compressed by a codec (e.g., G.711, G.728) to produce a low-bandwidth stream (e.g., 64 Kbps, 16 Kbps). Video sends longer packets, but frame size and compression still depends on encoding (e.g., MPEG-4, MPEG-2) which determines minimum acceptable throughput (e.g., 5 Mbps, 20 Mbps). However, because latency and jitter have such a significant impact, it is not enough to ensure that your network can transfer 64 Kbps per call or 5 Mbps per video. It is accomplished by setting 802.11e (Wi-Fi Multimedia, WMM) defined access classes. When that traffic hits the wired network, WMM priorities should be mapped to 802.1p (Ethernet frame) or DiffServ Code Point (IP packet) header markings. 

Dear Tanweer Alam thank you for your answer, it is very useful.

ISA100.11a is intended for industrial wireless. TDMA allows accurate control of the latency.

http://www2.emersonprocess.com/siteadmincenter/PM%20Central%20Web%20Documents/wirelesshart-vs-isa-WP.pdf

Dear Ioan, Thank you for your valuable answer. It is very interesting paper and contains the information I am looking for, I will read it.

wireless sensor network acts like a group of marine fish

Dr. Ashraf

I recommend you to read about "internet of things". it might be what you need.

Regards

Dear Rajab, The IoT is general classification, but what I mean the wireless network that can fulfill the real time requirements in terms of latency and data loss, examples are the WirelessHART™ and ISA100.11a.

Dear Nagi very good description.

Dear Ashraf Khalil 

Wireless Multimedia Sensor Network (WMSN) is a good choice. Becuase, it supports different real-time application such as industrial, military, civil, and medicine applications.Moreover, u can find many reference documents on the internet.

Best Regards

http://www.slideshare.net/nestortiglao/multitier-wireless-multimedia-sensor-networks

Dear Ali thank you for the slides, they are very useful.

Qualnet is an efficient simulator for wireless networks. However, RF communication is a very difficult area for correct prediction.

The propagation model used may not be appropriate for all distances, terrains or even frequencies. MIMO approach may be good for 802.11ac or 802.11ad standards. However the network has to support MIMO structure.

So, practical study of the network is also necessary in addition to simulations to make the solution robust.

Dear Prabir, thank yo for your answer.