A Method for Accessing Mobile Terminals Based on Effectiveness Theory in Heterogeneous Cellular Networks
A mobile terminal and cellular network technology, applied in the field of accessing mobile terminals based on efficiency theory, can solve problems such as load imbalance and high energy consumption, and achieve the effects of reducing load, high user satisfaction, and improving user experience
Inactive Publication Date: 2019-03-19
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology
[0006] The purpose of the present invention is to provide a method for accessing mobile terminals based on efficiency theory in a heterogeneous cellular network. The access method utilizes the efficiency theory and cell range expansion technology to solve the load imbalance and energy consumption in the current heterogeneous cellular network Larger problems, etc., while improving resource utilization and user satisfaction, it reduces the impact of handover delay on system performance
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[0049] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not constitute a conflict with each other.
[0050] figure 1 Shown is a schematic diagram of the heterogeneous cellular network in the present invention. In the embodiment of the present invention, there are one macrocell base station cell (Marcocell), two femtocell base station (picocell) cells, and four home base station (femtocell) cells in one area, which are respectively referred to as First level wireless network, second level wire...
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The invention discloses a method for connecting a mobile terminal into a heterogeneous cellular network based on an efficiency theory. The method includes the following steps that: the received powers of the mobile terminal for base stations of various wireless network layers in the heterogeneous cellular network are calculated; bias factors are set for the received powers of the mobile terminal for the wireless network layers, and a utility function is defined, a bias factor vector making the overall utility value of the heterogeneous cellular network maximum is selected as an optimal bias factor vector; and the value of each biased received power is calculated, and a wireless network layer with a maximum biased received power is selected as a wireless network layer into which the mobile terminal is connected. According to the method provided by the invention, factors such as the overall load status of the network, service bandwidth, energy consumption, expenses and the coverage rate of a whole system after the mobile terminal is connected into the network layer are considered simultaneously, and optimal network overall performance and higher user satisfaction can be realized under a condition that the overall load of the heterogeneous cellular network is balanced.
Description
technical field [0001] The invention belongs to the technical field of wireless communication, and more specifically relates to a method for accessing a mobile terminal in a heterogeneous cellular network based on efficiency theory. Background technique [0002] As data service types are more and more widely used, and users' demand for data rates is increasing, the traditional cellular network architecture has been unable to meet various service requests. Based on this, heterogeneous cellular networks have emerged as the times require, which refers to A large number of micro base stations (small cells) with different transmission powers, densities, etc., and different types of backhaul links are configured under the scope of a macro cell. Micro base stations include: femto base stations (pico cells), femtocells (femtocells) and relay base stations (relays), which aim to improve throughput in hotspot areas, balance the load of macro base station cells, and improve user satisf...
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IPC IPC(8): H04W16/32H04W28/08H04W36/04H04W36/16H04W36/30
CPCH04W16/32H04W28/08H04W36/04H04W36/165H04W36/30Y02D30/70
Inventor 韩涛姜海奇葛晓虎张靖李强韩宇杰熊思清刘雄
Owner HUAZHONG UNIV OF SCI & TECH