Method and device for dynamic adjustment of CCA energy detection threshold
An energy detection and energy threshold technology, applied in the field of communication, can solve problems such as system performance impact, large changes in energy detection threshold, affecting channel competition results, etc., to optimize system throughput and delay, improve accuracy and effectiveness, The effect of improving system performance
Active Publication Date: 2018-10-23
ALCATEL LUCENT SHANGHAI BELL CO LTD
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Problems solved by technology
[0009] 1. The existing technology can only adjust the energy detection threshold according to the maximum transmission power of the eNB, but cannot update parameters based on wireless environment feedback
Therefore, formula (1) cannot adjust system performance in real time to optimize system throughput and delay
[0010] 2. The existing technology only adjusts the energy detection threshold according to the maximum transmission power of the eNB, and cannot limit the impact of the eNB on the WiFi node during the channel access process
Therefore, fair coexistence of LAA and WiFi systems cannot be guaranteed
[0011] 3. If the maximum transmission power of the current eNB changes greatly, resulting in a large change in its energy detection threshold, it will affect the channel competition results of adjacent eNB / AP nodes and have a great impact on system performance
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[0076] Before discussing the exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although the flowcharts describe operations as sequential processing, many of the operations may be performed in parallel, concurrently, or simultaneously. In addition, the order of operations can be rearranged. The process may be terminated when its operations are complete, but may also have additional steps not included in the figure. The processing may correspond to a method, function, procedure, subroutine, subroutine, or the like.
[0077] In this context, a "processing device" may be an independent device, such as a "computer device" (also referred to as a "computer"). The computer device refers to an intelligent electronic device that can perform predetermined processing procedures such as numerical calculations and / or logic calculations by running predetermined programs or instructions,...
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The invention aims at providing a method and a device for dynamic adjustment of a CCA energy detection threshold. A new energy detection threshold is determined by adjusting a current energy thresholdbased on a ratio of a target throughput of a base station to an average throughput of a base station monitored in real time and in combination with an energy detection threshold range. Compared withthe prior art, the method and the device for dynamic adjustment of the CCA energy detection threshold can realize dynamic adjustment of the CCA energy detection threshold periodically and gradually based on a network environment feedback, increases system performance efficiently, stabilizes and optimizes system throughput and delay within a target range, changes probability of different systems byadjusting the CCA energy detection threshold, accordingly can guarantee fair coexistence of LAA and WiFi systems and can avoids negative influence from too big threshold change to neighboring nodes and the whole system.
Description
technical field [0001] The invention relates to the communication field, in particular to a technology for dynamically adjusting the CCA energy detection threshold in a network using an LBT mechanism. Background technique [0002] With the rapid development of Internet services and its good experience, the demand for high-speed data communication will continue to grow in the next decade. However, new licensed spectrum is becoming increasingly rare and expensive due to the limited frequency bands of available licensed carriers. In order to cope with the increasing demand for wireless communication, the method of using unlicensed frequency bands to assist in carrying service traffic has attracted more and more attention. For example, the LAA network provides a good way for operators to use unlicensed frequency bands, which helps to improve the overall performance of communication networks. [0003] LAA, or License Assisted Access, is a technology in which licensed frequency ...
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IPC IPC(8): H04W52/36H04W72/08H04W74/08H04W72/54
CPCH04W52/362H04W52/367H04W74/0808H04W72/542
Inventor 刘一飞田辉范绍帅闫晓婧杨钊李佳宁刘颀
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD