An Access Control Method for Maximizing the Number of Satisfied Users in Cellular Networks
A technology of access control and cellular network, applied in access restriction, wireless communication, electrical components, etc., can solve problems such as ignoring the optimization of the number of access users, and achieve simple and easy-to-understand access control methods, lighten the load, and achieve universality strong effect
Active Publication Date: 2022-04-01
CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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Problems solved by technology
The access control schemes in the above literature are designed to improve network capacity or user fairness, but ignore the optimization of the number of access users
Method used
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Embodiment 1
[0049] like figure 1 As shown, the technical solution of the present invention considers the downlink of OFDMA (Orthogonal Frequency Division Multiple Access, Orthogonal Frequency Division Multiple Access) cellular network.
[0050] The network consists of F cells and U users, and the sets of the two are represented as and The transmit power of base station in cell f is P f , the user set of cell f is expressed as RB (Resource Block) is the smallest resource unit that can be allocated in the network, and its total is For any user on the network Its received SINR on RB k γ uk (SINR, Signal to Interference plus Noise Ratio) can be expressed as follows:
[0051]
[0052] Among them, RB k represents the kth minimum resource unit that can be allocated in the network, and y mk Used to indicate whether RB k is allocated to user m, if RB k is allocated to user m, then y mk = 1, otherwise y mk =0,G fu is the channel gain from the fth cell base station to user u, N 0 ...
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An access control method for maximizing the number of satisfied users in a cellular network, which belongs to the field of wireless communication technology, and solves the problem of how to increase the number of access users and ensure that the QoS requirements of access users are met under the condition of limited spectrum resources , by chordizing the conflict graph and enumerating the maximal cliques in the chord graph, then calculating the number of RBs and the quantitative value of "negative effect" for each user, and using these two values as the basis for access control, to perform access control for each user entry or rejection decision. Considering the QoS requirements of users in access control, this method can finally maximize the number of users with maximum guaranteed QoS in the network; the access control method of the present invention is simple and easy to understand, has strong versatility, and is applicable to mobile communication network networks; at the same time, the method With polynomial-level complexity, it can be used in large connections and massive data scenarios, greatly reducing the load on hardware devices in communication systems.
Description
technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to an access control method for maximizing the number of satisfied users in a cellular network. Background technique [0002] Access control is a technology adopted by the communication system to avoid service overload. Its purpose is to improve the utilization rate of wireless resources and at the same time guarantee the access priority of high-priority users. By comprehensively considering factors such as network load status, resource usage, and user priority, the access control scheme can decide to allow or deny the establishment of radio bearers for new users. In recent years, the amount of mobile communication equipment and business data has ushered in a large-scale explosion, and limited spectrum resources are becoming more and more precious. At this time, the choice of access control scheme has an important impact on the performance of the communica...
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IPC IPC(8): H04W48/06H04W72/08H04W72/54
CPCH04W48/06H04W72/543H04W72/541H04W72/542
Inventor 赵飞飞胡树楷杨涛章明明姚艳军张霄徐运强黄蕾黄永华李家干
Owner CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST