Method for link self-adaption of video sensing in HSDPA network

Abstract

The invention discloses a method for link self-adaption of video sensing in an HSDPA network. The method comprises the steps of first calculating video transmission utility of a video packet for the video packet of a terminal user; dynamically calculating transmission capability and a corresponding link self-adaption scheme and transmission error probability according to reporting conditions of wireless channel quality signal interference noise ratio (SINR) of the terminal user; finally utilizing a dynamic programming mathematical method to convert a link self-adaption utility maximum restricted problem to a standard mathematical Knapsack problem, and solving a video transmission utility maximum link self-adaption scheme through limited mathematic iteration. According to the method, factors such as video packet transmission utility, user wireless transmission capability and user wireless transmission error probability are considered comprehensively, and simulation experiments show that the wireless transmission capability of video users in an HSDPA system can be effectively improved.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, relates to a video perception link adaptive algorithm, in particular to a video perception link adaptive method in an HSDPA network. Background technique [0002] With the continuous development of electronic technology, terminal products that support high data rates, such as mobile phones, notebook computers, and smart appliances, are becoming more and more popular. In the HSDPA (High Speed ​​Downlink Packet Access) network, how to efficiently transmit video services with a large data rate and perform unified management and scheduling has become a research hotspot. At present, in the HSDPA network, in order to achieve efficient wireless link transmission, the 3GPP organization stipulates a recommended link adaptive algorithm: on the basis of the transmission block error probability BLER not higher than 10%, select the maximum modulation and coding scheme for link road adaptive tr...

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Problems solved by technology

However, there are two defects in this adaptive coding scheme: (1) selecting an adaptive modulation and coding scheme strictly according to BLER less than 10% cannot maximize the transmission capacity of HSDPA

(2) This kind of link adaptive algorithm that does not distinguish between business types cannot effectively protect important video frame data from loss, so it is difficult to guarantee the transmission quality in the process of video transmission

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