Mechanism Of Device-to-Device Communication And Resource Manegement Research

With the development of mobile communications,3GPP Long Term Evolution, as one of the most mature technologies, brings mobile communications to the new era of4G. Due to high-speed data services, such as multimedia communications, high-density transient data communication among the users and massive information exchange, the capacity and spectrum have reached the maximum with the traditional way of communication. Device-to-Device provides us an effective solution. Under the control of a cellular system, it reuses the resource among the cells for equipment communication, resulting in the improvement of the system performance. In this way, the spectrum resource is highly utilized and the scarcity of spectrum is mitigated. This essay proposes a strategy to solve the existing device-to-device communication corresponding problems:Large signaling overhead, inefficient paging etc. The specific research area and innovations are described as follows:Based on LTE-Advanced system device to device communication mechanism, combined with new technology, innovation put forward the communication model and communication device to device communication scenarios. Including the use of new technologies such as the new carry type, the carrier aggregation is proposed in device to device communication model, and specifically describes the user device to the communication device in the same cell and the adjacent cell specific communication scenario the communication mechanism and innovative manner proposed by weighting selected the user may then select the master station of the master policy. In terms of the detection and match in Device-to-Device communication, a policy adopting the traditional paging signal and the revised D2D paging signal to realize the detection and matching is proposed. The D2D paging match with the new-type paging signal can increase the efficiency of paging.Based on the existing establishing process of Device-to-Device communication, a new method of establishment, maintenance and release for Device-to-Device communication with the help of new carry type and the technology of carriers aggregation. Compared to the establishment of the existing Device-to-Device communication, this thesis use of a new technology, the saving of the control channel signaling and the detailed establishment of D2D communication under different scenarios.In the last part, the thesis is summarized, including the key points of the proposed policies, the outcome of the policies and the future research direction.