A method and device for dynamically adjusting 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 channel utilization
Active Publication Date: 2021-12-14
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] It should be mentioned before discussing exemplary embodiments in more detail, some exemplary embodiments are described as a process or method as a flowchart depiction. While the flowchart describes the operations described in order, many of them can be implemented in parallel, concurrently or simultaneously. In addition, the order in which each operation can be rearranged. The processing can be terminated when its operation is completed, but may also have additional steps not included in the drawings. The process can correspond to methods, functions, procedures, subroutines, subroutines, and the like.
[0077] The "processing device" in the context can be a separate device, such as a "computer device" (also known as "computer"). The computer device refers to an intelligent electronic device that can perform a predetermined processing process such as calculation and / or logic calculation by operating a predetermined program or instruction, which may include a processor and...
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The object of the present invention is to provide a method and device for dynamically adjusting the threshold value of CCA energy detection. According to the ratio of the target throughput of the base station and the average throughput of the base station monitored in real time, combined with the range of the energy detection threshold, the present invention adjusts the current energy threshold to determine a new energy detection threshold. Compared with the prior art, the present invention can periodically and gradually adjust the CCA energy detection threshold in real time according to the network environment feedback, effectively improving the system performance, stabilizing and optimizing the system throughput and delay within the target range, and By adjusting the CCA energy detection threshold to change the access probability of different systems, it can ensure the fair coexistence between LAA and WiFi systems, and avoid the adverse effects of excessive threshold changes on adjacent nodes and the entire system.
Description
Technical field [0001] The present invention relates to the field of communications, particularly to a dynamic adjustment technique CCA energy detection threshold value of the network using the LBT mechanism. Background technique [0002] With the rapid development of Internet services as well as a good experience they have in the next decade, the demand for high-speed data communication will continue to grow. However, the available authorized carriers have defined frequency bands, new licensed spectrum is becoming increasingly rare and expensive. In response to the increasing demand for wireless communication using unlicensed frequency band adjunct to carry traffic it attracted more and more attention. For example, LAA network operators use unlicensed band provides a good way to help improve the overall performance of the communication network. [0003] LAA, i.e. licensed spectrum secondary access (License Assisted Access), LTE network technology to transmit data by using the au...
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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