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Asynchronous frequency hopping sequence design method of antenna heterogeneous cognitive wireless network

A technology of cognitive wireless network and frequency hopping sequence, applied in the field of asynchronous frequency hopping sequence design, can solve the problems such as the influence of frequency hopping convergence efficiency

Active Publication Date: 2019-11-19
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Application Information

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Problems solved by technology

[0004] In a cognitive wireless network with heterogeneous antennas, since the number of antennas configured by any two cognitive nodes may be different, the number of channels they can access in the same time slot will also be different, so frequency hopping is implemented for them Convergence efficiency has a certain impact

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  • Asynchronous frequency hopping sequence design method of antenna heterogeneous cognitive wireless network
  • Asynchronous frequency hopping sequence design method of antenna heterogeneous cognitive wireless network
  • Asynchronous frequency hopping sequence design method of antenna heterogeneous cognitive wireless network

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Embodiment Construction

[0037] The present invention is described in detail below in conjunction with accompanying drawing

[0038] For a given number of antennas R=2, (3,2)-difference set The number of aggregation channels DoR=M=4, and can be divided into 4 mutually disjoint (24,6)-difference sets, namely with with The (4,24,6)-joint disjoint difference set A can generate an asynchronous frequency hopping sequence set containing 2 frequency hopping sequences for a cognitive node with 2 antennas through the following steps:

[0039] S1. Number the M=4 converging channels of the cognitive wireless network, and the numbers are recorded as: 0,1,2,3; number the R=2 antennas of the cognitive nodes, and the numbers are recorded as: 0,1 ; The periodic frequency hopping sequence performed by each antenna is numbered in n=24 time slots in each period, and the numbers are recorded as: 0,1,...,23; for a given (3,2)-difference A set U whose two elements can be identified as u 0 = 0 and u 1 = 1; 4 m...

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Abstract

The invention belongs to the technical field of communication, and particularly relates to an asynchronous frequency hopping sequence design method of an antenna heterogeneous cognitive wireless network. The invention aims to design a frequency hopping sequence generation method suitable for control information interaction for an antenna heterogeneous cognitive wireless network, can ensure any twocognitive nodes with the same or different antenna numbers to realize frequency hopping convergence on all M channels under any clock difference condition while the maximum time interval (namely theMTTR value) and the maximum condition time interval (namely the MCTTR value) required by two consecutive converges are effectively reduced, so that the beneficial effect of shortening the maximum timedelay of antenna heterogeneous cognitive wireless network control information interaction under the limiting condition given by the number of converge channels (namely the DoR value) is achieved.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a method for designing an asynchronous frequency hopping sequence of an antenna heterogeneous cognitive wireless network. Background technique [0002] In order to flexibly use the idle spectrum resources of the authorized network for communication without interfering with the authorized network communication, the cognitive wireless network needs to set up a set of efficient and reliable control information interaction mechanism to realize the interaction between cognitive nodes including spectrum sensing results. , network topology, clock synchronization and communication resource reservation and other types of control information. The control information interaction method based on frequency hopping can flexibly and quickly find an idle communication frequency band (or channel) that is not occupied by the authorized network by continuously changing the communi...

Claims

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Application Information

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IPC IPC(8): H04B1/715H04B1/7136
CPCH04B1/7136H04B1/715H04B2001/7152
Inventor 谭雪松袁勇军
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA