To adapt to the development of mobile communication technologies in the next 10-year timeframe and better meet an ever-increasing demand for data services,3GPP has started the Long Term Evolution(LTE) and System Archi...To adapt to the development of mobile communication technologies in the next 10-year timeframe and better meet an ever-increasing demand for data services,3GPP has started the Long Term Evolution(LTE) and System Architecture Evolution(SAE) study projects.In view of the high-speed and bursty feature of future data services,the Evolved Packet System(EPS) makes quite a few enhancements and improvements in Quality of Service(QoS).By introducing such technologies as default bearer and aggregate resource scheduling,the EPS truly realizes the objective of 'Always Online' for users,improves data rates and thus enhances user experience ultimately.Furthermore,an appropriate mapping between the EPS QoS Class Identifier(QCI) parameter and Universal Mobile Telecommunication System (UMTS) QoS parameter is designed regarding future interoperability scenario between UMTS Terrestrial Radio Access Network(UTRAN) and Evolved UTRAN (E-UTRAN).展开更多
The popular application of optical fiber technology increases the bearing capacity of backbone network greatly and makes the access network the bottleneck for services. The WiMAX is characterized by large bandwidth, w...The popular application of optical fiber technology increases the bearing capacity of backbone network greatly and makes the access network the bottleneck for services. The WiMAX is characterized by large bandwidth, wide covering range, and mobility supporting. Though WiMAX system has brought many new features to the access network, it brought new problems such as security guarantee under wireless environment, dynamic resource management, and mobility management. Especially the QoS mechanism is important in providing reliable end-to-end services under complicated communication environment. All those problems need to be solved in practice gradually.展开更多
文摘To adapt to the development of mobile communication technologies in the next 10-year timeframe and better meet an ever-increasing demand for data services,3GPP has started the Long Term Evolution(LTE) and System Architecture Evolution(SAE) study projects.In view of the high-speed and bursty feature of future data services,the Evolved Packet System(EPS) makes quite a few enhancements and improvements in Quality of Service(QoS).By introducing such technologies as default bearer and aggregate resource scheduling,the EPS truly realizes the objective of 'Always Online' for users,improves data rates and thus enhances user experience ultimately.Furthermore,an appropriate mapping between the EPS QoS Class Identifier(QCI) parameter and Universal Mobile Telecommunication System (UMTS) QoS parameter is designed regarding future interoperability scenario between UMTS Terrestrial Radio Access Network(UTRAN) and Evolved UTRAN (E-UTRAN).
文摘The popular application of optical fiber technology increases the bearing capacity of backbone network greatly and makes the access network the bottleneck for services. The WiMAX is characterized by large bandwidth, wide covering range, and mobility supporting. Though WiMAX system has brought many new features to the access network, it brought new problems such as security guarantee under wireless environment, dynamic resource management, and mobility management. Especially the QoS mechanism is important in providing reliable end-to-end services under complicated communication environment. All those problems need to be solved in practice gradually.
