User access and power joint scheduling method based on packet switching in cellular traffic unloading network

Abstract

The invention relates to a user access and power joint scheduling method based on packet switching in a cellular traffic unloading network. The user access and power joint scheduling method comprises the following steps that: (1), to enable more users to be accessed to an AP and enable the transmitting power of the users to be low as much as possible, a benefit function is given, such that whether a current network is good or bad can be judged; (2), because the benefit function is only related to the access conditions of the users, the optimal system benefit can be determined only in need of searching the optimal user access; and (3), the access selection of the users can become difficult along with increasing of the number of the users; a user packet switching method based on a simulated annealing algorithm is adopted; accesses of the users are continuously replaced; a solution for enabling a target function to become good is accepted; simultaneously, a poor solution is accepted at a certain probability; furthermore, the poor solution acceptation probability is continuously reduced; and finally, a near-optimal solution is obtained through algorithm convergence. According to the invention, the optimal user access can also be found rapidly and effectively while the efficiency of the system is increased; and simultaneously, the power distribution of the users is determined.

Description

technical field [0001] The invention relates to the field of cellular networks, in particular to a joint scheduling method for user access power based on packet switching. Background technique [0002] In recent years, with the continuous development of mobile devices, the required mobile data traffic has also increased. Therefore, operators must seek better ways to meet user needs. Offloading user traffic to the base station will be a more promising method. The benefits of this kind of data shunting mainly have two aspects. First of all, from the user's point of view, the cost of being served by these small base stations is much smaller than that of using a base station. At the same time, since these small base stations are relatively close to users, the power consumed by users when communicating is also relatively small. On the other hand, from the operator's point of view, offloading some users' traffic to small base stations can effectively reduce traffic congestion;...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the problem in the prior art that due to mutual interference between users accessing the same AP, the transmission power between users is coupled together, so it is relatively difficult to obtain optimal user access and power allocation, this paper The invention provides a joint scheduling method of user access power based on packet switching in a cellular traffic offloading network. Based on the simulated annealing algorithm user access method to find a better user access, each AP will share the task of managing users. Improve the efficiency of the system while also being able to quickly and efficiently find the optimal user access and determine the user's power allocation

Images