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A radio resource scheduling method and device for an interference coordination system

A technology for wireless resource scheduling and interference coordination, which is applied in the field of wireless resource scheduling methods and devices, and can solve problems such as interference coordination, UPRP not being utilized, and UPRP remaining of edge users

Active Publication Date: 2019-12-27
CHONGQING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the user’s interference is not considered, the original priority calculation method is still used, which will make the central user’s competition priority on PRRP larger, but the difference in the amount of data that the central user can transmit on PRRP and UPRP is not large, so UPRP cannot be effectively used, and the purpose of interference coordination cannot be achieved
In the existing research, it is also proposed to divide edge users and central users according to user channel quality, and then schedule the two types of users on different resources. The problem with this scheduling method is that the user division and the capacity of the two types of resources differ Matching may lead to insufficient PRRP for central users in a certain time slot, while UPRP for edge users is still left

Method used

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  • A radio resource scheduling method and device for an interference coordination system
  • A radio resource scheduling method and device for an interference coordination system
  • A radio resource scheduling method and device for an interference coordination system

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Experimental program
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Embodiment 1

[0063] As shown in the figure, the resource scheduling method provided in this embodiment includes the following steps:

[0064] a. Define the interference impact factor, which is used to measure the degree to which the user is affected by the interference, and use the user's channel feedback information on the UPRB and PRRB respectively to evaluate the spectral efficiency of the user using the UPRB and PRRB, and calculate the user's interference impact factor;

[0065] b. Calculate the scheduling priorities of the users on the UPRBs and PRRBs respectively by using the interference impact factors of the users.

[0066] c. Sorting the users according to the scheduling priorities of the users on the UPRB and PRRB, and allocating resources to the users in combination with the user's data backlog information, without limiting which users are scheduled on the UPRB and which users are scheduled on the PRRB.

[0067] Evaluate the spectral efficiency of users on UPRBs and PRRBs as fol...

Embodiment 2

[0096] The infinite resource scheduling method for an interference coordination system provided in this embodiment includes the following steps:

[0097] Utilizing the channel feedback information of the user on the resource with strong interference (UPRB) and the resource with weak interference (PRRB) in the interference coordination system, according to the downlink adaptive criterion, the user is mapped to obtain The spectral efficiency on the PRRB is defined as the ratio of the spectral efficiency on the PRRB to the spectral efficiency on the UPRB as the user's interference impact factor, which is used to measure the degree to which the user is affected by the interference. Using the interference impact factor, the scheduling priority of the user on the UPRB and PRRB is calculated respectively.

[0098] Specifically, when the system adopts the frequency domain interference coordination technology, the base station needs to calculate the scheduling priority of the user on t...

Embodiment 3

[0105] figure 2 It is a schematic diagram of the frequency domain interference coordination system used in the present invention. Specifically, base station resources are divided into different frequency band resources corresponding to different multiplexing degrees. Among them, the resources with higher multiplexing degrees belong to UPRB, and the multiplexing degrees are low. of resources belong to the PRRB.

[0106] image 3 It is a schematic diagram of the time-domain interference coordination system used in this embodiment. Specifically, when the system adopts the eICIC technology to configure ABS subframes for the macro base station, the low-power nodes (LPNs) within the coverage of the macro base station belong to the resources scheduled by the ABS PRRB, resources scheduled by regular subframes belong to UPRB;

[0107] When the system uses FeICIC to configure PR-ABS for the macro base station, the resources scheduled by the PR-ABS of the LPN within the coverage of th...

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Abstract

The invention discloses a wireless resource scheduling method used in an interference coordination system. The resource blocks in a base station are divided into resource blocks with higher interference (UPRB) and resources with lower interference (PRRB). The base station uses the downlink The self-adaptive modulation and coding rule evaluates the spectrum efficiency, and describes the influence degree of the interference received by the user through the interference impact factor; calculates the scheduling priority; and allocates UPRB and PRRB resources to the user according to the scheduling priority and user backlog data packet information. Adoption of the present invention can enable users with large differences in spectrum efficiency on UPRB and PRRB to have more opportunities to call PRRB, without limiting the scope of scheduling users on different resources, and avoiding the waste of some resources caused by unreasonable user division. The effectiveness of resource utilization of PRRP and the utilization rate of UPRB and PRRB resources are improved.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a wireless resource scheduling method and device for an interference coordination system. Background technique [0002] In recent years, with the rapid development of smart terminals, users' demand for mobile communication traffic has shown explosive growth. In order to meet the needs of users, the future 5G network is developing in the direction of diversification, broadband, integration and intelligence. The LTE-Advanced system introduces the concept of Heterogeneous Network (HetNet, Heterogeneous Network), and deploys low-power nodes within the coverage of macro cells to enhance coverage. While increasing the overhead of power and deployment costs, frequency reuse brings improvements. The spectrum efficiency of the system can greatly improve the network capacity. This layered network deployment can enhance the coverage quality in specific areas, improv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04W28/02H04W72/12
CPCH04L1/0026H04W28/0236H04W72/1273H04W72/54H04W72/569H04W72/23
Inventor 唐伦陈婉尹生华石林陈前斌
Owner CHONGQING UNIV OF POSTS & TELECOMM