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A Resource Allocation Method Based on Joint Unicast and Multicast Mechanism

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, and achieve the effect of saving computing time, fewer algorithm parameters, and simple implementation

Active Publication Date: 2019-01-25
BEIJING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • A Resource Allocation Method Based on Joint Unicast and Multicast Mechanism
  • A Resource Allocation Method Based on Joint Unicast and Multicast Mechanism
  • A Resource Allocation Method Based on Joint Unicast and Multicast Mechanism

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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] parameters

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]

[0126] P loss(macro-ue) UE i and the path loss of base station B;

[0127] P loss(macro-ue) =128.1+37.6log 10 d (km) ...

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Abstract

The invention discloses a resource allocation method based on a joint unicast and multicast mechanism, specifically as follows: 1. Initialize parameters; 2. Use a random function to determine the position of each user and calculate the distance; 3. Arrange the distance values ​​in descending order, Select unicast users and connect to the base station respectively; 4. For each remaining multicast user, calculate the distance between the multicast user and each unicast user, and connect according to the minimum value; 5. Update unicast cyclically Calculate the total throughput of the system and obtain the maximum value for the number of users; 6. Determine whether the number of unicast users meets the limit of the maximum number of unicast users. If so, output the maximum system throughput; otherwise, return to step 5. The advantages are: making full use of the characteristics of the firefly algorithm: few parameters and simple implementation, reducing the complexity of system resource allocation, saving calculation time, ensuring the user system QoS requirements and maximizing system throughput.

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: ensuring user QoS (Quality of Service, service quality) and maximizing the throughput of the communication system; user QoS refers to user data transmission rate and 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 scheduling, but first queries when s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/08H04W72/04H04W72/54
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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