D2D (Dimension to Dimension) multicast opportunistic scheduling method for realizing throughput rate maximization for cellular network
A scheduling method and cellular network technology, applied in electrical components, wireless communication, etc., can solve the problems of not considering the correlation between the previous and subsequent time slots, affecting the throughput rate of the next time slot, etc., to achieve good promotion and application prospects, save transmission power, and satisfy Effects of QoS Requirements
Inactive Publication Date: 2015-07-15
BEIJING UNIV OF POSTS & TELECOMM
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If the data rate of the previous time slot is low, then more users successfully receive data for the first time; correspondingly, the number of users who have not successfully received data in the next time slot will be correspondingly reduced, thus affecting the throughput of the next time slot
However, the existing multicast opportunistic scheduling schemes do not consider the correlation between the throughput rates of the previous and subsequent slots. Therefore, if the throughput of the previous slots and the estimated value of the throughput of the subsequent slots are considered comprehensively, it can be further improved. network throughput
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[0032] In order to make the purpose, technical solution and advantages of the present invention clearer, the test process and performance analysis of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings and simulation examples.
[0033] The distribution environment of mobile users applicable to the method of the present invention is illustrated as follows: employees of a certain company hold a video conference, and the participants gather in the conference room and use their respective laptop computers to access the Internet through wireless. After the meeting starts, the meeting host uses the wireless network to let everyone share their computer desktops, and the participants watch the meeting materials opened by the host on the desktop in real time in the form of video on their laptops. At this time, all the laptops in this conference room form a D2D multicast group. The distance between the terminals...
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The invention discloses a D2D (Dimension to Dimension) multicast opportunistic scheduling method for realizing throughput rate maximization for a cellular network. Based on the transmission property of a D2D multicast group that a source terminal sends next data packet only after all users receive a data packet successfully, therefore, the throughput of each time slot ought to be taken into comprehensive consideration in order to improve the throughput of the D2D multicast group, whereas, the throughput of each time slot is dependent on the number qi of users successfully receiving data for the first time in the time slot, and thus, the key to maximizing the throughput of the D2D multicast group is to reasonably select the number qi of the users successfully receiving the data for the first time in each time slot of transmission. According to the invention, spectral efficiency and network throughput are taken into comprehensive consideration, a multicast opportunistic scheduling technology is applied to the D2D multicast group, and the relevancy among throughputs of different time slots is utilized to improve the spectral efficiency and the throughput of the D2D multicast group at the same time, so that the throughput of the entire cellular network is improved. The method disclosed by the invention is simple in operation steps, low in calculation difficulty and easy to realize technically and has an excellent popularization and application prospect.
Description
technical field [0001] The present invention relates to an opportunistic scheduling technology in a D2D multicast group, specifically, a D2D multicast opportunistic scheduling method for maximizing the throughput of a cellular network, and the method is applicable to cellular cells containing a D2D multicast group The high-speed data transmission service belongs to the technical field of wireless communication transmission. Background technique [0002] With the in-depth research and development of the LTE-A system, more technical evolution and development of mobile communication systems are carried out under the category of future mobile cellular networks. The evolution of the mobile communication system has brought about a continuous increase in bandwidth requirements, causing bandwidth allocation to become more and more crowded. Because the frequency spectrum resources available for mobile communication are very limited, and the available bandwidth cannot meet the requir...
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IPC IPC(8): H04W72/12
Inventor 王晓湘瞿静王冬宇王玉龙龚文熔张鸿涛
Owner BEIJING UNIV OF POSTS & TELECOMM