In network layer link bandwidth and available bandwidth capture the relevant properties of network path, which is baseline of performance management and QoS control.
网络层的链路带宽与有效带宽直接反映了端到端路径的基本状况，是对网络进行性能管理和服务质量控制的基础。
By estimating the path capacity and available bandwidth, terminals can dynamically select the optimized accessing point, which fulfills the requirements of real time link accessing and selection.
通过对网络路径容量和可用带宽的估计，终端可以实时动态地选择最优的接入点，满足链路接入和选择的需求。
The bandwidth of a data transmission path available to end users after control and signaling bits are accounted for.
在传输了控制和信令比特后，数据传输通道的带宽全部供终端用户使用。
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