A Confidentiality Interference Avoidance Method Based on Probability

Abstract

The invention belongs to the field of cellular mobile communication, and discloses a probability-based confidentiality interference avoidance method, which mainly solves the interference problem in an ultra-dense network; considering the interference characteristics of an ultra-dense wireless network, a strategy of first activation and then association / first association and then activation is adopted Strategy, activate the base station according to the probability to reduce interference; further use the progressive interference cancellation technology to activate the user communication link, the communication link determines the activation (backoff) probability according to the current perceived "interference temperature" and the historical information of the interference, and decides whether to use it based on the probability Data transmission at the current moment. The invention realizes the effective avoidance of ultra-dense network interference, can essentially change the asymptotic trend of network capacity, breaks the traditional theoretical upper bound of network capacity, and enables multi-user MIMO on the basis of effective control of wireless interference. The multi-user gain of the technology can be fully utilized, laying the foundation for the application of multi-user MIMO technology in ultra-dense wireless networks.

Description

technical field [0001] The invention belongs to the field of cellular mobile communication, in particular to a method for avoiding confidentiality interference based on probability. Background technique [0002] At present, the existing technologies commonly used in the industry are as follows: the rapid development of mobile communication systems and the explosive growth of the number of terminal devices have created a large number of mobile service requirements, which put forward higher requirements for the network capacity of mobile communication systems. The ultra-dense networking technology increases the degree of space division multiplexing of spectrum resources by reducing the propagation distance of wireless signals, and has been considered by the industry to be the most effective way for the next generation mobile communication system to increase network capacity. However, the spectrum resources in the network are limited. With the continuous increase of the deploym...

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Problems solved by technology

[0004] However, the application of multi-user MIMO technology in ultra-dense wireless networks to improve the degree of space division multiplexing of network resources has the following problems: the degree of interference in ultra-dense networks will be further aggravated, and the interference structure will be more complex, resulting in multi-user MIMO Gains are difficult to obtain effectively

The traditional multi-user MIMO technology can only quantitatively increase the capacity of the wireless network, but cannot change the asymptotic trend of the capacity with the degree of density. That is, when the network is deployed in an ultra-dense environment, the serious deterioration of the interference will eventually cause the network capacity to disappear.

[0005] In ultra-dense wireless networks, the structural characteristics of interference have changed significantly, and traditional interference cancellation techniques have the following problems: traditional interference cancellation and interference coordination techniques can only suppress local interference in the network, and cannot fundamentally alleviate the global interference of the network , so the above method only has gains in improving the capacity of ultra-dense wireless networks, but it does not significantly increase the capacity distortion density

[0006] The defects of the above traditional interference control methods make the interference in the ultra-dense network not efficiently managed, which greatly limits the improvement of user capacity and system rate.

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