A load balancing method and base station suitable for heterogeneous networks

A load balancing and base station technology, applied in the field of communication, can solve problems such as affecting the effect of load balancing, increasing air interface signaling overhead, unable to continue to adjust the number of ABS subframes, etc., to achieve improved effects, reduce air interface signaling overhead, high system The effect of capacity gain

CN105282790BInactive Publication Date: 2018-11-02POTEVIO INFORMATION TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2018-11-02
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a load balancing method suitable for a heterogeneous network and a base station. The load balancing method suitable for the heterogeneous network includes the following steps: a macro base station monitors the macro cell load conditions and receives small cell load condition monitoring information reported by small cells; the macro base station adaptively adjusts the allocation quantity of almost blank subframes (ABS) according to the load conditions of the macro cells and the small cells; and when the macro base station determines that the allocation quantity of the ABSs reaches a critical value, the macro base station adjusts a bias value of cell range expansion (CRE) according to the load conditions of the macro cells and the small cells to realize load balancing. The method disclosed by the invention comprehensively considers adjustment of the CRE bias quantity and adjustment of the number of the ABSs, thereby improving an effect of load balancing of the heterogeneous network.
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Description

technical field

[0001] The invention relates to the field of communication technology, in particular to a load balancing method and a base station suitable for heterogeneous networks. Background technique

[0002] The mobile communication standardization organization 3GPP proposed a heterogeneous network in the standardization of LTE-Advanced. In order to solve the problem of load imbalance between heterogeneous network cross-layer cells and improve the utilization of system resources, 3GPP proposed the cell coverage extension technology CRE ( Cell Range Expansion), that is, adding a bias amount to the RSRP (Reference Signal Receiving Power) of the small cell, so that users in the macro cell close to the small cell are preferentially accessed to the small cell, thereby reducing the load of the macro cell. The larger the bias is set, the greater the coverage of the small cell will be, and more macro cell users will migrate to the small cell; on the contrary, if the bias is se...

Examples

Embodiment 1

[0044] This embodiment discloses a load balancing method suitable for heterogeneous networks, such as figure 1 As shown, the method may include the following steps:

[0045] 101. The macro base station monitors the load status of the macro cell in real time and receives the load status monitoring information of the small cell reported by the small cell in real time;

[0046] 102. According to the load status of the macro cell and the small cell, the macro base station adaptively adjusts the number of almost blank subframe ABS subframe configurations, and the adaptive adjustment method can be realized by using an existing algorithm;

[0047] 103. When the macro base station determines that the number of configured ABS subframes reaches a critical value, according to the load status of the macro cell and the small cell, adjust the bias value bias of the cell coverage extension CRE to achieve load balancing;

[0048] Wherein, the critical value is determined according to the pre...

Embodiment 2

[0065] This embodiment discloses a base station suitable for load balancing of heterogeneous networks, figure 2 The base station shown is the macro base station in the foregoing method embodiment. This embodiment is only for illustration. This embodiment does not limit the composition of the unit modules in the macro base station and the arrangement of the unit modules. The base station may include:

[0066] A monitoring unit is used for real-time monitoring of the load status of the macro cell;

[0067] The receiving unit is used to receive the small cell load status monitoring information reported by the small cell in real time;

[0068] determining that the small cell activates the CRE function unit, configured to determine that the small cell activates the cell coverage extension CRE function according to the load status of the macro cell and the small cell;

[0069] The unit for adjusting the number of ABS subframe configurations is used to adaptively adjust the number ...