Data packet transmission scheduling method and device based on forward valve
A technology for transmission scheduling and data packets, which is applied in digital transmission systems, transmission systems, data exchange networks, etc., and can solve problems such as high computational complexity
Active Publication Date: 2018-09-14
BEIJING YONGANXINTONG TECH CO LTD
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[0022] In this scheme, the lowest energy consumption data packet transmission is realized, but it needs to traverse and search the slope of each transmission section of the transmission curve, which has high computational complexity
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[0070] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.
[0071] At first, introduce the theoretical basis that the present invention relates to:
[0072] Related theorems for minimum energy transfer:
[0073] Theorem 1: For the lowest energy consumption data packet transmission, in each packet arrival time interval d n Inside, the transmission rate is constant.
[0074] Proof: Since the signal power is a convex function of the transmission rate, according to Jensen's inequality:
[0075]
[0076]
[0077]
[0078] in for interval d n The average transfer rate within . The right half of the above formula is in d n The energy consumption transmitted at the transmission rate R(t) in the inner part is the energy consumption transmitted at the average transmission rate. It can be known that if in d ...
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The invention discloses a data packet transmission scheduling method based on a forward valve and a device. The method comprises steps that a step 1, M is set to be 0; a step 2, traversal of n from 1 to N is carried out, a step 3 and a step 5 are further carried out, after traversal, the progress turns to a step 8; the step 3, an nth data packet is taken as an M+1 transmission segment; a step 4, the transmission segment number M is updated to be M+1; a step 5, when the M is larger than 1, and a transmission rate of the Mth segment is smaller than and equal to that of an (M-1)th segment, a step 6 and a step 7 are carried out, otherwise, the progress returns to the step 2, and another traversal is carried out; a step 6, an (M-1)th transmission segment and an Mth transmission segment are merged to form a new (M-1)th transmission segment; a step 7, the transmission segment number is updated from M to M-1, and the progress returns to the step 5; and a step 8, the data packets in each time segment are transmitted at a transmission rate of the corresponding segment according to the arrival order. According to the data packet transmission scheduling method based on the forward valve, the data packets can be transmitted and scheduled at lowest energy consumption, and the method further has an advantage of low complexity.
Description
technical field [0001] The invention relates to the field of wireless communication, in particular to a data packet transmission scheduling method and device based on a forward valve. Background technique [0002] In the context of increasingly tight energy resources, the pursuit of higher energy efficiency is an important goal of wireless communication development, and low-energy data packet transmission is a key part of achieving higher energy efficiency in future wireless communication. For a data packet of a given size, the smaller the transmission rate and the longer the transmission time, the smaller the corresponding transmission energy consumption. The above conclusions will be described below by taking an AWGN (Additive White Gaussian Noise) transmission channel as an example and combining with Shannon's theorem. [0003] In a given channel bandwidth B and noise power spectral density N 0 In the case of , Shannon's theorem describes the relationship between the tr...
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IPC IPC(8): H04L12/861
CPCY02D30/50
Inventor 刘思平
Owner BEIJING YONGANXINTONG TECH CO LTD