Energy-carrying transmission multi-use scheduling method under heterogeneous fading channels
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A multi-user scheduling and fading channel technology, applied in the field of wireless ad hoc networks, can solve problems such as insufficient battery energy supply and affecting network lifetime.
Inactive Publication Date: 2016-12-21
HEILONGJIANG UNIV
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[0003] The present invention aims to solve the problem of insufficient battery energy supply in the existing wireless sensor network environment, which seriou
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specific Embodiment approach 1
[0046] Specific embodiments 1. A multi-user scheduling method for energy-carrying transmission under a heterogeneous fading channel, the method is an order-based SNR scheduling method, and the method includes the following steps:
[0047] Step 1. Use the formula:
[0048] n * = arg o r d e r n ∈ { 1 , ... , N } h n - - - ( 1 )
[0049] Select user n for transmission * ;
[0050] Among them: n is the user serial number, define "argorder" as j th Raising the power, so that the user has j when receiving information th Raised power SNR, where the order j...
specific Embodiment approach 2
[0068] Specific embodiment two, the energy-carrying transmission multi-user scheduling method under the heterogeneous fading channel, this method is the N-SNR scheduling method based on order, this method comprises the following steps:
[0069] Step A1, use the formula:
[0070] n * = arg o r d e r n ∈ { 1 , ... N } h n Ω n
[0071] Select user n for transmission * ;
[0072] Among them: n is the user serial number, N is the number of battery-powered user terminals in the channel; h is the channel energy obtained when the AP transmits to the receiver, h n is the instantaneous channel...
specific Embodiment approach 3
[0090] Specific embodiment three, the multi-user scheduling method of energy-carrying transmission under the heterogeneous fading channel, the method is an order-based ET scheduling method, and the method includes the following steps:
[0091] Step B1, in the time slot t, use the formula:
[0092] n * = arg min O U n ∈ S a r n ( t - 1 )
[0093] Select user n for transmission * ;
[0094] Among them: n is the user serial number, the parameter When the user's N-SNR order j belongs to S a When , allocate the minimum amount of information transmission for these users, the parameter is the N-SNR order o...
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Abstract
The invention relates to an energy-carrying transmission multi-use scheduling method under heterogeneous fading channels, relates to the technical field of wireless ad-hoc networks, in particular relates to a downlink multi-use scheduling technology of a time slot energy-carrying transmission system, and aims to solve the problem that the network lifetime is seriously influenced due to limited energy supply of a sensor in an existing wireless sensor network environment. The invention provides three order-based energy scheduling mechanisms, and simultaneously provides respective unit average harvested energy and theoretical deviated expressions of ergodic capacities, so that the balance relationship between the information transmission rate and the harvested energy in a transmission process is controlled; therefore, the network lifetime is effectively prolonged; by means of the energy-carrying transmission multi-use scheduling scheme under multiple heterogeneous fading channels, the network communication performance research complexity due to energy deficiency of a battery of the sensor can be reduced; furthermore, the lifetime of a wireless sensor network is prolonged; and the global information transmission stability is improved; and the energy-carrying transmission multi-use scheduling method disclosed by the invention is applied to the technical field of wireless ad-hoc networks.
Description
technical field [0001] The present invention relates to the technical field of wireless ad hoc networks, in particular to the energy-carrying transmission multi-user scheduling technology under various heterogeneous fading channels. Background technique [0002] In recent years, wireless sensor networks have become an important branch of modern mobile communication systems and an important technical support for communication. Because it does not require a fixed base station, each node can move freely, and can realize dynamic connection. In addition, it has the characteristics of strong survivability, and extremely convenient creation and movement, which makes it make up for the gap between the cellular system and the wired network. Insufficient, it plays an irreplaceable role in many special cases. For some special application scenarios, mobile communication technologies that rely on infrastructure are not competent. Therefore, wireless communication devices powered by bat...
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