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Data unloading method based on cognitive picocell and double link

A technology of picocell and picocell base stations, which is applied in the field of data offloading based on cognitive picocell and dual links, and can solve the problems of lack of utilization, congestion of macrocell network, and inability of macrocell network to meet data traffic requirements.

Active Publication Date: 2019-03-15
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0004] Purpose of the present invention: In order to solve the technical problem that the traditional macro cellular network cannot meet the ever-increasing demand for data traffic, the present invention solves the problem of spectrum shortage and low utilization rate through the cognitive wireless network technology, and improves the user service data rate
The present invention not only solves the problem of macro cellular network congestion, but also can use the remaining time and spectrum resources of the macro cellular network to serve cognitive pico cellular user terminals

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  • Data unloading method based on cognitive picocell and double link
  • Data unloading method based on cognitive picocell and double link
  • Data unloading method based on cognitive picocell and double link

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Embodiment Construction

[0045] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings.

[0046] The system model considered in the data offloading method based on cognitive picocell and dual links proposed by the present invention is as follows: figure 2 shown. It is composed of a macrocell base station, M macrocell user terminals, a cognitive picocell base station, and K cognitive picocell user terminals.

[0047] The parameters in the above system model are set as follows: Respectively represent the transmit power of the macro-cell user terminal m to the macro-cell base station, the transmit power of the macro-cell user terminal m to the cognitive-picocell base station, and the transmit power of the cognitive-picocell user terminal k to the cognitive-picocell base station; Indicates the maximum transmit power of the macro-cell user terminal, Indicates the maximum transmit power of cognitive picocell user terminals. make...

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Abstract

The invention provides a data unloading method based on cognitive picocell and double link. The method is applied to a heterogeneous network, and comprises the following steps: when a macro cell userterminal enters the cognitive picocell base station communication range, the macro cell user terminal simultaneously connects a macro cell base station and the cognitive picocell base station, and thedata unloading method is used for unloading partial or all data to the cognitive picocell base station. Through the method provided by the invention, a problem model is constructed by maximizing thetotal data rate of the cognitive picocell user terminal as a target problem, and a constraint condition is set, and specific parameters for data unloading are obtained by solving the problem. The problems that the spectrum is absent and the utilization rate is low are solved through the cognitive wireless network technology, and the user service data rate is improved.

Description

technical field [0001] The invention belongs to the field of wireless communication, and in particular relates to a data unloading method based on cognitive picocells and dual links. The method can use remaining resources to serve cognitive picocell user terminals while ensuring the service quality of macrocell user terminals. . Background technique [0002] With the increasing popularity of mobile terminal equipment, the business demand for mobile users to access Internet services through smart terminals is growing rapidly, which greatly increases the pressure on the macro cellular network. Therefore, the macro cellular network operator can offload customer traffic in the macro cellular network by deploying the pico cellular network, considering that other network operators have already deployed pico cellular base station resources, and the cost comparison of the macro cellular network operator deploying the pico cellular network high. Macro cellular network operators can...

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Application Information

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IPC IPC(8): H04W28/02H04W72/04
CPCH04W28/0289H04W72/52
Inventor 徐鼎刘奔崔一石
Owner NANJING UNIV OF POSTS & TELECOMM
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