Combined unicast and multicast mechanism-based resource allocation method

A resource allocation and unicast technology, applied in the field of communication, can solve the problem of not being able to guarantee user system QoS requirements and system throughput at the same time

Active Publication Date: 2016-03-30
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0010] The present invention provides a resource allocation method based on the joint unicast and multicast mechanism, aiming at the fact that the existing algorithm cannot guarantee the user system QoS requirement and the maximum system throughput at the same time, and ensures the high-quality transmission of multimedia services by calculating the throughput of the communication system

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  • Combined unicast and multicast mechanism-based resource allocation method
  • Combined unicast and multicast mechanism-based resource allocation method
  • Combined unicast and multicast mechanism-based resource allocation method

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specific Embodiment

[0120] The simulation scenario is set to a common simulation network configuration of a small cell network. A base station is arranged in the center of the cell, and M2M devices are randomly distributed in a radius circle of 250 meters around it. Assuming that orthogonal channels are used for resource allocation between M2M devices, there is no interference between different users, and a large-scale fading channel is considered.

[0121] The detailed simulation parameters are shown in Table 5-1:

[0122] Table 5-1 Simulation parameter settings

[0123] parameter value bandwidth 10MHz noise power -174dBm / Hz The transmission power of the base station 26dBm Unicast user transmit power 14dBm

[0124] Unicast User UE i and the channel power gain g between base station B b,i for:

[0125] g b , i = 10 ...

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Abstract

The invention discloses a combined unicast and multicast mechanism-based resource allocation method. The method specifically comprises the steps of 1, initializing parameters; 2, determining the location of each user by a random function and calculating distance values; 3, arranging the distance values in a descending order, selecting unicast users and connecting the unicast users with a base station respectively; 4, for each rest multicast user, respectively calculating the distance between the above multicast user and each unicast user respectively, and connecting according to the minimum value of the distance values; 5, circularly updating the number value of unicast users, and respectively calculating a system total throughput and a maximum value; 6, judging whether the number value of unicast users meets the restriction requirement on the maximum value of unicast users or not; if yes, outputting the maximized system throughput; if not, returning to conduct the step 5. According to the technical scheme of the invention, the characteristics of the firefly algorithm are fully utilized, so that the method has the advantages of fewer parameters, easy implementation, reduced complexity of system resource allocation and less computation time. Meanwhile, the system throughput is maximized while the QoS requirements of system users can be met at the same time.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a resource allocation method based on a joint unicast and multicast mechanism. Background technique [0002] Resource scheduling is a form of resource allocation. It accomplishes the task of efficiently allocating wireless resources among different users by effectively selecting modulation and coding for time domain and frequency domain resources. The goal of resource scheduling includes two aspects: guaranteeing the user's QoS (Quality of Service, quality of service) and maximizing the throughput of the communication system; the user's QoS refers to the user's data transmission rate and the fairness among users. [0003] The resource scheduling method in the prior art includes polling algorithm and maximum carrier-to-interference ratio algorithm; [0004] The round robin algorithm, also known as the RR scheduling algorithm, does not sort the priority order of user schedul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/08H04W72/04
CPCH04W72/0473H04W4/06H04W4/70H04W72/543H04W72/542
Inventor 张鹤立张高毓纪红李曦王珂
Owner BEIJING UNIV OF POSTS & TELECOMM
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