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User scheduling method, main base station, user equipment and heterogeneous network

A user scheduling and user equipment technology, applied in the field of communication, can solve the problems of reducing the throughput of the mobile communication system, large interference, and lack of pre-judgment of interference

Inactive Publication Date: 2014-02-12
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] Embodiments of the present invention provide a user scheduling method, a primary base station, user equipment, and a heterogeneous network, aiming to solve the lack of prediction of interference after user scheduling in the prior art because base stations do not exchange user scheduling information. The interference between each cell is very large, which reduces the throughput of the entire mobile communication system

Method used

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  • User scheduling method, main base station, user equipment and heterogeneous network
  • User scheduling method, main base station, user equipment and heterogeneous network
  • User scheduling method, main base station, user equipment and heterogeneous network

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Embodiment 1

[0056] The HetNet network architecture is an effective way to improve coverage and capacity in the cellular network. Under the existing architecture, interfaces such as X2 have been defined between the nodes of the HetNet network. Through such interfaces, some information can be exchanged between the nodes. , for some coordinated operations. In order to deal with the interference between each other, the present invention defines a new feedback mechanism on this basis to coordinate the interference between the nodes in the HetNet, and each node independently schedules the user equipment, thereby adding a small amount of complexity Under such circumstances, the purpose of improving coverage and increasing throughput is achieved.

[0057] figure 2 A schematic structural diagram of the HetNet network provided by Embodiment 1 of the present invention is shown. For the convenience of description, only the parts related to the embodiment of the present invention are shown, and the ...

Embodiment 2

[0061] Figure 4 The implementation flow of the user scheduling method provided by Embodiment 2 of the present invention is shown, and the details are as follows:

[0062] In step S401, the main base station receives the downlink interference indication DII forwarded by the serving secondary base station serving the user equipment UE, the DII is sent to the serving secondary base station by the UE attached to the serving secondary base station, when the DII When it is greater than the preset threshold, it means that the UE is in a high DII area.

[0063] In this embodiment, the master base station receives the downlink interference indication (Downlink Interference, DII) forwarded by the slave base station, wherein the UE attached to the slave base station receives strong interference from the master base station or receives the strongest interference from the master base station, in order to improve Performance, the UE in the base station calculates the DII, then feeds the D...

Embodiment 3

[0091] Figure 5 A structural block diagram of the primary base station provided by Embodiment 3 of the present invention is shown, and for convenience of description, only parts related to the embodiment of the present invention are shown. In this embodiment, the master base station 5 includes: a downlink interference indication receiving unit 51 , an area judging unit 52 and a user scheduling unit 53 .

[0092] Wherein, the downlink interference indication receiving unit 51 is configured to receive the downlink interference indication DII forwarded by the serving secondary base station serving the user equipment UE, the DII is sent to the serving secondary base station by the UE attached to the serving secondary base station, When the DII is greater than a preset threshold, it means that the UE is in a high DII area;

[0093] An area judging unit 52, configured to judge whether the UE is in a high DII area according to the DII;

[0094] The user scheduling unit 53 is confi...

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Abstract

The present invention relates to the technical field of communications. Provided are a user scheduling method, primary base station, user equipment (UE) and heterogeneous network, the method comprising: a primary base station receives a downlink interference instruction (DII) forwarded by a secondary serving base station serving a UE, the DII being transmitted to the secondary serving base station by the UE attached thereto, and the UE being in a high DII area when the DII is greater than a preset threshold(S401); determining whether the UE is in a high DII area according to the DII (S402); and if the UE is in a high DII area, then the primary base station reduces, during scheduling, the allocation of the resources causing interference to the UE (S403). In the present invention, a secondary base station firstly receives a DII fed back by a UE, and then forwards the DII to a primary base station; when the UE is in a high DII area, the primary base station actively reduces, during scheduling, the allocation of the resources causing interference to the UE attached to the secondary base station, thus reducing the interference to the UE attached to the secondary bases station.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a user scheduling method, a master base station, user equipment and a heterogeneous network. Background technique [0002] The R8 protocol of Long Term Evolution (LTE) and its subsequent versions define the basic feedback mode to optimize transmission efficiency, especially for downlink transmission, according to the frequency selection characteristics in the radio resource management (Radio Resource Management, RRM) entity Scheduling, including modulation and coding scheme (modulation and coding scheme, MCS) selection, multiple-input multiple-output (Multiple-Input Multiple-Output, MIMO) mode selection, user selection, etc. In a heterogeneous network (HetNet), since the interference comes from multiple interference sources such as its own macro cell, neighboring macro cells, and other micro cells, the interference itself cannot be simply considered as Gaussian ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/12H04W72/54
CPCH04W72/542H04W72/541H04W72/27
Inventor 杜颖钢戎璐托马斯·威尔斯马丁·库拉斯拉斯·席勒
Owner HUAWEI TECH CO LTD
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