Frequency spectrum aggregation resource distributing method based on cognitive radio technology
A cognitive radio and spectrum aggregation technology, which is applied in user/terminal allocation, wireless communication, transmission path sub-channel allocation, etc., can solve problems such as inability to effectively allocate cognitive spectrum resources, and achieve good performance
Active Publication Date: 2015-04-01
HARBIN INST OF TECH
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[0005] The present invention aims to solve the problem that the existing spectrum aggregation algorithm cannot effectively allocate cognitive spectrum resources under the condition of cognitive radio technology, thereby providing a spectrum aggregation resource allocation method based on cognitive radio technology
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specific Embodiment approach 1
[0034] Specific implementation mode 1. Combination figure 1 with figure 2 To illustrate this specific implementation mode, when new user data arrives, if the frequency band that can be aggregated has not been sensed by cognitive radio technology at this time, spectrum sensing is performed first to obtain information about idle cognitive spectrum that can be used for aggregation.
[0035] P 0 , i = 1 - λ i μ i - - - ( 1 )
[0036] Among them, λ i and μ i is the arrival rate and service rate of authorized users on the i-th cognitive component carrier, which is obtained through sensing by the spectrum sensing algorithm. We can obtain the equivalent throughput of the i-th cognitive component ...
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The invention discloses a frequency spectrum aggregation resource distributing method based on the cognitive radio technology, relates to a frequency spectrum aggregation resource distributing method, and aims to solve the problem that the cognitive frequency spectrum resource cannot be effectively distributed under the condition of the cognitive radio technology of the existing frequency spectrum aggregation algorithm. The method comprises the following steps: 1, obtaining information and equivalent throughput of cognitive frequency spectrum authorization users by using a frequency spectrum perception algorithm; 2, selecting a corresponding cognitive frequency spectrum as a component carrier of the frequency spectrum aggregation and ensuring that the total throughput of the aggregation component carrier meets the requirements of frequency spectrum aggregation users; 3, ranking user data to be transmitted from high to low according to priority and ensuring the user data transmission fairness; 4, distributing the user data to the corresponding component carrier in two cases according to the priority order of the user data. The frequency spectrum aggregation resource distributing method is suitable for distribution of frequency spectrum aggregation resources.
Description
technical field [0001] The invention relates to a spectrum aggregation resource allocation method. Background technique [0002] As multimedia services such as voice, data, image, and video require higher and higher transmission rates, users' demand for wireless transmission bandwidth is increasing day by day. In the LTE-Advanced standard, in order to support a wireless bandwidth up to 100MHz, a spectrum aggregation technology is introduced to meet the requirements of its transmission bandwidth. On the premise that the LTE-Advanced system has sufficient continuous or discrete bandwidth, the LTE-Advanced system can meet the maximum 100MHz wireless bandwidth requirement of the LTE-Advanced system by aggregating continuous or discontinuous spectrum bandwidth. At present, many scholars have conducted a lot of research on spectrum aggregation technology in LTE-Advanced system, and proposed a variety of spectrum aggregation resource allocation algorithms in LTE-Advanced system, s...
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IPC IPC(8): H04W16/10H04L5/00
CPCH04L5/0037H04W16/14H04W72/0453H04W72/52
Inventor 马琳洑云海徐玉滨崔扬刘宁庆
Owner HARBIN INST OF TECH