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A Data Offloading Method Based on Cognitive Picocell and Dual Link

A technology of picocell and picocell base stations, applied in the field of data offloading based on cognitive picocell and dual link, can solve the problems of macrocell network unable to meet data traffic demand, lack of utilization rate, macrocell network congestion, etc., to achieve high efficiency Service quality, guaranteeing service quality, and promoting the effect of collaboration

Active Publication Date: 2021-08-27
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

Method used

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  • A Data Offloading Method Based on Cognitive Picocell and Dual Link
  • A Data Offloading Method Based on Cognitive Picocell and Dual Link
  • A Data Offloading Method Based on Cognitive Picocell and Dual 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 present invention proposes a data offloading method based on cognitive picocells and dual links. The method is used in a heterogeneous network. When a macrocell user terminal enters the communication range of a cognitive picocell base station, the macrocell user terminal simultaneously connects to the macro A cellular base station and a cognitive picocellular base station, and adopt the data offloading method to unload part or all of the data to the cognitive picocellular base station; the method constructs a problem model with the goal of maximizing the total data rate of the cognitive picocellular user terminal , and set the constraint conditions, and obtain the specific parameters of data unloading by solving the problem. The cognitive wireless network technology solves the problem of lack of spectrum and low utilization rate, and improves the user service data rate.

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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Patent Type & Authority Patents(China)
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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