Anonymous frequency hopping sequence design method suitable for multi-antenna cognitive wireless network
A technology of cognitive wireless network and frequency hopping sequence, which is applied in the design field of control information exchange mechanism based on frequency hopping, can solve the problems of low frequency hopping convergence performance, etc., and achieve the effect of improving security
Active Publication Date: 2022-07-08
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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[0008]However, although the existing frequency hopping aggregation algorithm can support any two cognitive nodes to achieve anonymous aggregation on any N different channels, when the number of aggregation channels When N increases, the MTTR of this type of algorithm will increase at a faster speed of O(N2), resulting in poor performance of frequency hopping convergence
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[0059] Given that the total number of accessible channels in a cognitive wireless network is N=512, the cognitive node CU a Configured with 3 antennas, and has a set of available channel numbers {58, 232, 138, 313, 421, 25, 97, 70, 145, 113, 37, 79, 180, 326, 245}, the present invention is used for the cognitive node CU through the following steps a Generate a frequency hopping sequence set containing 3 frequency hopping sequences:
[0060] S1. Connect the cognitive node CU a The three antennas are numbered 0, 1, and 2 in sequence.
[0061] S2, put the cognitive node CU a The 15 available channels are numbered into 3 channel groups V a,0 ={58,232,138,313,421}, V a,1 ={25,97,70,145,113}, and V a,2 = {37, 79, 180, 326, 245}, so that antennas 0, 1 and 2 are in channel group V, respectively a,0 ,V a,1 and V a,2 Hop up.
[0062] S3. Initialize the cognitive node CU a The antenna number is r=0.
[0063] S4, the periodic frequency hopping sequence of the initialized antenn...
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The invention belongs to the technical field of communication, and particularly relates to an asynchronous frequency hopping sequence design method suitable for a multi-antenna cognitive radio network. The invention aims to design an anonymous frequency hopping sequence generation method suitable for control information interaction for a clock asynchronous and antenna heterogeneous distributed control cognitive radio network. Two cognitive nodes with different local available channel sets and configured with different antenna numbers can realize frequency hopping convergence on all common available channels thereof under any frequency hopping starting moment difference, and a frequency hopping convergence capability backwards compatible with a single-antenna cognitive node is provided for a multi-antenna cognitive node. And an MTTR value superior to a theoretical upper limit value O (N2) can be realized under the condition that the number of local available channels is far smaller than the total number N of accessible channels of the cognitive wireless network, so that the anonymous control information interaction performance of any two antennas and the heterogeneous cognitive nodes of the available channels is effectively improved.
Description
technical field [0001] The invention belongs to the technical field of communication, and in particular relates to the design of a control information exchange mechanism based on frequency hopping suitable for a wireless communication network. Background technique [0002] Cognitive wireless networks usually consist of a group of network communication nodes that do not have legally licensed spectrum resources. On the premise of ensuring that the legitimate communication of authorized users is not interfered, cognitive wireless network nodes need to flexibly access the appropriate authorized communication frequency band to complete the communication function between each other. In a cognitive wireless network based on distributed control, the different physical locations of different cognitive nodes and their different spectrum sensing capabilities will lead to the set of available communication frequency bands (or channels) that they perceive locally. different, which bring...
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Login to View More IPC IPC(8): H04B1/7136
CPCH04B1/7136Y02D30/70
Inventor 刘仁婷谭雪松甄云志
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA