Wireless Multimedia in 3G Networks

: Cloud monitoring technology is an important maintenance and management tool for cloud platforms.Cloud monitoring system is a kind of network monitoring service, monitoring technology and monitoring platform based on Internet. At present, the monitoring system is changed from the local monitoring to cloud monitoring, with the flexibility and convenience improved, but also exposed more security issues. Cloud video may be intercepted or changed in the transmission process. Most of the existing encryption algorithms have defects in real-time and security. Aiming at the current security problems of cloud video surveillance, this paper proposes a new video encryption algorithm based on H.264 standard. By using the advanced FMO mechanism, the related macro blocks can be driven into different Slice. The encryption algorithm proposed in this paper can encrypt the whole video content by encrypting the FMO sub images. The method has high real-time performance, and the encryption process can be executed in parallel with the coding process. The algorithm can also be combined with traditional scrambling algorithm, further improve the video encryption effect. The algorithm selects the encrypted part of the video data, which reducing the amount of data to be encrypted. Thus reducing the computational complexity of the encryption system, with faster encryption speed, improve real-time and security, suitable for transfer through mobile multimedia and wireless multimedia network.

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Contention window based QoS DCC-MAC for wireless multimedia sensor networks

IET International Communication Conference on Wireless Mobile & Computing (CCWMC 2009) ◽

10.1049/cp.2009.1925 ◽

2009 ◽

Author(s):

Yan-liang Jin ◽

Zhen Zhang ◽

Hai-tao Liu

Keyword(s):

Sensor Networks ◽

Wireless Multimedia Sensor Networks ◽

Contention Window ◽

Wireless Multimedia ◽

Multimedia Sensor Networks

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Adaptive Real-Time Routing Protocol for (m,k)-Firm in Industrial Wireless Multimedia Sensor Networks

Sensors ◽

10.3390/s20061633 ◽

2020 ◽

Vol 20 (6) ◽

pp. 1633 ◽

Cited By ~ 2

Author(s):

Beom-Su Kim ◽

Sangdae Kim ◽

Kyong Hoon Kim ◽

Tae-Eung Sung ◽

Babar Shah ◽

...

Keyword(s):

Real Time ◽

Routing Protocol ◽

Traffic Management ◽

Research Area ◽

Multimedia Data ◽

Wireless Multimedia ◽

Multimedia Sensor Networks ◽

Proposed Model ◽

Event Information ◽

Firm Model

Many applications are able to obtain enriched information by employing a wireless multimedia sensor network (WMSN) in industrial environments, which consists of nodes that are capable of processing multimedia data. However, as many aspects of WMSNs still need to be refined, this remains a potential research area. An efficient application needs the ability to capture and store the latest information about an object or event, which requires real-time multimedia data to be delivered to the sink timely. Motivated to achieve this goal, we developed a new adaptive QoS routing protocol based on the (m,k)-firm model. The proposed model processes captured information by employing a multimedia stream in the (m,k)-firm format. In addition, the model includes a new adaptive real-time protocol and traffic handling scheme to transmit event information by selecting the next hop according to the flow status as well as the requirement of the (m,k)-firm model. Different from the previous approach, two level adjustment in routing protocol and traffic management are able to increase the number of successful packets within the deadline as well as path setup schemes along the previous route is able to reduce the packet loss until a new path is established. Our simulation results demonstrate that the proposed schemes are able to improve the stream dynamic success ratio and network lifetime compared to previous work by meeting the requirement of the (m,k)-firm model regardless of the amount of traffic.

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