Multicast resource allocation and transmission method of scalable video in multi-base station system

Abstract

The invention discloses a multicast resource allocation and transmission method of scalable video in a multi-base station system, which is characterized in that it is carried out in the following steps: 1. Mobile equipment in a cell area receives data transmitted by different base stations; 2. Video stream Divided into base layer and enhancement layer; 3 The base station control center selects an appropriate transmission base station for each video layer and decides which modulation and coding method to use; 4 Multiple base stations transmit the video layer according to the specified modulation and coding method, and calculate the mobile device in the system The total number of received video layers and the system utility value. The invention effectively utilizes frequency spectrum resources, increases the utility value of the whole system, and effectively improves the overall throughput of the network environment, thereby providing users with better video service quality.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a multicast resource allocation and transmission method of scalable video in a multi-base station system. Background technique [0002] With the development of telecommunication technology, 3G and 4G technologies have been used for video on demand, online video, online game IPTV, etc. The next-generation wireless communication technology 5G is oriented to 2020. The overall wireless mobile network needs to have 1000 times the mobile traffic provision capability. The throughput per unit area needs to be 1000 times or even higher than the current 4G (above 100Gbps / km2). Among them, video services account for 79% of the total market traffic. Therefore, in order to improve the overall performance of the cellular network, improve the utilization rate of the increasingly scarce spectrum resources, and meet the requirements of equipment for transmission rates, related technologies ...

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Problems solved by technology

[0009] However, all the above studies on multi-base station cooperative systems are only for transmission under multi-base station and multi-cell, that is, only one base station exists in the same area, and multiple base stations cooperate in multiple cells, and different base stations use the same frequency band resource , and there will be data transmission interference between multiple base stations, and for the terminal, each user can only be covered by one base station

However, in an actual network system, a cell can often be covered by multiple different base stations, and different terminal equipment can receive service data transmitted by different base stations. much research

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