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With the development of sensor technology, communication technology and computer technology, wireless sensor networks (WSN) play an increasingly important role in the information industry in the 21st century. WSN monitoring physiological characteristics in medical applications in the field of wireless smart location positioning, gradually come out of the research of wireless body area network (WBAN). The IEEE 802.15 working group TG6 wireless body area network is defined sensor networks have many similarities, but due to the introduction of the human medium, as well as special medical applications, making such a network with existing sensor networks have significant difference . Medical sensor node energy is limited, energy saving has become the the WBAN primary consideration, this study focused on energy efficiency issues in WBAN expand. The WBAN communication process consumes a lot of energy. Multi-hop network communication process involves two aspects of the communication path and communication content, so you can study how to choose an efficient communication path and minimize unnecessary communication content to an effective solution WBAN energy constrained problem, which is in this article two research directions: routing protocols and data fusion. First, we study different WBAN and other self-organizational network of focusing on analysis of WBAN channel propagation model, by the human impact on the type of business as well as special business needs and other characteristics, proposed a wireless body domain network's design goals, and research direction . Second, by studying the existing routing protocol algorithm, combined WBAN affected by the channel, the node type of business needs and other features energy efficient routing protocols EE-DSR. Simulation results show that in NS-2, in the case of the number of network nodes in medium or large, the EE-DSR can effectively select the path of energy saving, the time of death of the first node in the network; by specific business node considerations, make full use of the residual energy in the network, to improve the lifetime of the network. The simulation also shows that this program brings network latency issues, but the biggest delay still meet the needs of the application. Again, due to the comparison and information processing, the bits transmitted (or received) needs to occupy a large amount of energy consumption, therefore Another task of this article is by the method of data fusion, minimize the emission of the redundant information, and to improve the effectiveness of the transmission of . This paper to discuss the situation of both high-speed and low-speed data processing. Specifically, the article for video, high-speed bit-rate business, the use of the concept of joint coding, source and channel H.264 data partition function of the importance of data protection strategies, and according to the channel feedback information to adjust the coding strategy, the network packer packaged and a transmission power and transmission time, thereby minimizing unnecessary data transmission, to save energy consumption. Additionally, the article against common ECG low medical operations, discussed the ECG preprocessing, QRS wave detection, characterized parameter extraction process, then the algebraic codebook used according to the existing speech coding the forecast thought process of the ECG details. Finally, according to these business needs, design the hardware processing framework, based on analysis of hardware solutions to achieve business module. Based on the selected program designed hardware power, clock, storage requirements, and interface design module provides complete hardware platform for algorithm validation and demonstration of the follow-up.
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