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Distributed dense network resource allocation algorithm for wireless network

A resource allocation and dense network technology, applied in the field of dense network resource allocation based on multi-point coordinated transmission technology, can solve the problems such as the inability to exert the advantages of the spectrum utilization efficiency of the HetNet structure and the increase in the intensity of co-channel interference.

Inactive Publication Date: 2017-07-18
GUANGDONG SOUTHERN PLANNING & DESIGNING INST OF TELECOM CONSULTATION CO LTD
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  • Application Information

AI Technical Summary

Problems solved by technology

However, high-density node deployment will cause an increase in the intensity of co-channel interference between cells
If it is not handled properly, the advantages of the HetNet structure in terms of spectrum utilization efficiency will not be able to be brought into play.

Method used

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  • Distributed dense network resource allocation algorithm for wireless network
  • Distributed dense network resource allocation algorithm for wireless network
  • Distributed dense network resource allocation algorithm for wireless network

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Embodiment Construction

[0079] 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.

[0080] see figure 1 Shown is the network structure of the dense network downlink transmission system using frequency division duplexing in the present invention. As shown in the figure, there are M base stations (Base Station, BS) in the network, and each BS is equipped with NT transmitting antennas. The set of all transmission nodes is denoted as Π={1, . . . , M}. Each BS in the network multiplexes NRB resource blocks with a bandwidth of 180 kHz and a transmission time interval of 1 ms. At a certain moment, the network provides transmission services for evenly distributed K users at the same ti...

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Abstract

The invention discloses a distributed dense network resource allocation algorithm for a wireless network. The method comprises the steps of firstly collecting channel information channel detected by a user; then initializing an allocation scheme generation probability; generating allocation scheme samples according to the generation probability; then computing a target function value of each sample; screening the samples, and outputting a scheduling result; and correcting the result according to a constraint condition, outputting a RB scheduling result, then performing a power distribution algorithm, and at last outputting a resource allocation scheme. According to the algorithm, the sample generation probability is set according to an estimated user data rate, so that a rate of convergence is effectively accelerated; then the optimal scheduling result meeting capacity limitation of a backhaul is acquired by continuously iterating the generation probability; and at last, the scheduling result is corrected according to the given speed rate, and thus the requirement on the minimum data rate in transmission is ensured.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a dense network resource allocation method based on coordinated multipoint (CoMP) transmission technology. Background technique [0002] A dense network refers to a densely deployed network architecture formed by adding a large number of low-power and low-cost access points within the coverage of an existing macro cell. In a dense network, access points can be flexibly deployed in places with poor indoor or outdoor communication quality, which can avoid the influence of obstacles on wireless signal transmission. At the same time, the introduction of the access point shortens the transmission distance between the base station and the user, reduces the path loss in the wireless signal transmission process, and thus improves the quality of signal transmission. Therefore, as an effective way to achieve high data rate communication within the full coverage ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/024H04W28/22H04W28/24H04W72/08H04W72/54
CPCH04B7/024H04W28/22H04W28/24H04W72/542
Inventor 于佳岳胜陈轶尤星陈桂树
Owner GUANGDONG SOUTHERN PLANNING & DESIGNING INST OF TELECOM CONSULTATION CO LTD