翻译：where ri = j∈B xij cij is the receiving rate of UE i, and Ui(ri) reflects the degree of satisfaction for UE i. Different degrees of satisfaction are obtained for different receiving rates. Therefore, the utility function is a monotonically increasing function of the receiving rate. This function can be modeled as either a logarithmic function or a sigmoid function. Notably, different types of UE devices may have different levels of satisfaction, even for the same receiving rate, and one can reasonably assume that the utility functions are different for different types of UE devices. In the simulation section, a specific utility function, such as a logarithmic function, is used. In addition, the proposed algorithm can be easily implemented when UEs have different utility functions.

其中ri = j∈B xij cij 是用户设备 i 的接收速率，而Ui(ri) 反映了用户设备 i 的满意程度。不同的接收速率会获得不同程度的满意度。因此，效用函数是接收速率的单调递增函数。这个函数可以建模为对数函数或S型函数。值得注意的是，不同类型的用户设备可能对相同的接收速率具有不同的满意度，可以合理地假设不同类型的用户设备具有不同的效用函数。在模拟部分，使用了特定的效用函数，比如对数函数。此外，当用户设备具有不同的效用函数时，所提出的算法可以很容易地实现。