Downlink interference elimination method based on carrier waves in hybrid network

Abstract

The invention provides a downlink interference elimination method based on carrier waves in a hybrid network. The method comprises the steps that an OAM initially configurates protected resources of each cell in advance, namely a certain carrier wave is determined to be a first-choice Pcell of a user belonging to each cell, and a base station of each cell knows initial configuration information of the protected resources of an adjacent cell; the base station of each cell configurates protected weights of the usable carrier waves of the cells, the weights of the initial configuration protected resources are not changed, the weights of the remaining useable carrier waves are determined according to protected weight information of each carrier wave of the adjacent cell and the load of each carrier wave of the adjacent cell, and when the configuration information and the load of the carrier waves of the adjacent cell are changed, the weights of the usable carrier waves are changed; the protected weight configuration information and the load information of each carrier wave of the cells are intersected among the cells; the Pcell and the Scell of the user belonging to each cell are configurated according to the weights of the protected resources of each cell and the position information of the user in each cell. According to the downlink interference elimination method based on the carrier waves in the hybrid network, the hybrid downlink interference is effectively reduced, the limited spectrum resources are fully utilized, and service jamming on the carrier waves is avoided.

Description

technical field

[0001] The invention belongs to the technical field of fourth-generation mobile communication networks, and relates to an interference elimination method, in particular to a carrier-based downlink interference elimination method in a hybrid network. Background technique

[0002] In future mobile communication systems, there will be application scenarios of hybrid networks, that is, within the well-planned cellular network coverage formed by macro base stations, there will be multiple low-power base station LPN coverage. When there are repeated coverage of macro base stations and LPNs in some areas, a multi-layer network (that is, a hybrid network) is formed. A focus of research in hybrid nets is how to perform interference suppression. Existing research proposes various interference suppression methods based on carrier aggregation and non-carrier aggregation respectively. This patent mainly studies carrier-based interference cancellation methods for hybrid ...

Examples

Embodiment 1

[0030] This embodiment takes figure 1 Taking the interference scenario in the example as an example, the carrier-based downlink interference elimination method in the hybrid network according to the present invention will be described in detail. figure 1 The shown scene includes Marco and Pico nodes, Pico is in the coverage area of ​​Marco, and the available carriers are f1 and f2. The main implementation process of this method is as follows: figure 2 shown, including:

[0031] OAM initially pre-configures the protected resources of each cell, that is, determines a certain carrier as the preferred Pcell of the subordinate users of the cell, and the base station nodes of each cell know the initial configuration information of the protected resources of the neighboring cells;

[0032]The base station node of each cell configures the protected weights of the remaining available carriers in its own cell according to the initial configuration information of the protected resourc...

Embodiment 2

[0038] This embodiment provides a specific implementation of the method described in Embodiment 1, the process of which is as follows image 3 shown, including the following steps:

[0039] S1: OAM configures the protected resource of the Marco cell as f1 (that is, f1 is used as the user's preferred Pcell), configures the protected resource of the Pico cell as f2 (that is, uses f2 as the user's preferred Pcell), and each cell knows the protected resources of neighboring cells Initial configuration information, that is, to know which carrier the Pcell of the neighboring cell mainly serves as the user.

[0040] S2: Each cell base station (eNB) assigns different weights to each carrier available in the cell according to the protected resource information of the neighboring cell: Marco configures f1 with the highest weight and the weight value remains unchanged, and f2 has a lower weight; Pico configures f2 with the highest weight And the weight value remains the same, and the we...

technical field

[0001] The invention belongs to the technical field of fourth-generation mobile communication networks, and relates to an interference elimination method, in particular to a carrier-based downlink interference elimination method in a hybrid network. Background technique

[0002] In future mobile communication systems, there will be application scenarios of hybrid networks, that is, within the well-planned cellular network coverage formed by macro base stations, there will be multiple low-power base station LPN coverage. When there are repeated coverage of macro base stations and LPNs in some areas, a multi-layer network (that is, a hybrid network) is formed. A focus of research in hybrid nets is how to perform interference suppression. Existing research proposes various interference suppression methods based on carrier aggregation and non-carrier aggregation respectively. This patent mainly studies carrier-based interference cancellation methods for hybrid ...

Examples

Embodiment 1

[0030] This embodiment takes figure 1 Taking the interference scenario in the example as an example, the carrier-based downlink interference elimination method in the hybrid network according to the present invention will be described in detail. figure 1 The shown scene includes Marco and Pico nodes, Pico is in the coverage area of ​​Marco, and the available carriers are f1 and f2. The main implementation process of this method is as follows: figure 2 shown, including:

[0031] OAM initially pre-configures the protected resources of each cell, that is, determines a certain carrier as the preferred Pcell of the subordinate users of the cell, and the base station nodes of each cell know the initial configuration information of the protected resources of the neighboring cells;

[0032]The base station node of each cell configures the protected weights of the remaining available carriers in its own cell according to the initial configuration information of the protected resourc...

Embodiment 2

[0038] This embodiment provides a specific implementation of the method described in Embodiment 1, the process of which is as follows image 3 shown, including the following steps:

[0039] S1: OAM configures the protected resource of the Marco cell as f1 (that is, f1 is used as the user's preferred Pcell), configures the protected resource of the Pico cell as f2 (that is, uses f2 as the user's preferred Pcell), and each cell knows the protected resources of neighboring cells Initial configuration information, that is, to know which carrier the Pcell of the neighboring cell mainly serves as the user.

[0040] S2: Each cell base station (eNB) assigns different weights to each carrier available in the cell according to the protected resource information of the neighboring cell: Marco configures f1 with the highest weight and the weight value remains unchanged, and f2 has a lower weight; Pico configures f2 with the highest weight And the weight value remains the same, and the we...

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