IMS specifies enablement of quality of Service within the IP network and takes advantage of th QoS mechanism to improve and guarantee the transmission quality.
IMS指定了IP网络内的服务质量增强功能，并利用QoS机制来提高和保证传输质量。
The improved RED mechanism makes the DVB gateway to achieve higher transmission efficiency and ensures the quality of service guarantees.
实验表明，采用改进的RED算法，提高了DVB网关转发效率，保证了不同用户所要求的服务质量。
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