Interference Management Method for Heterogeneous Networks Based on Multidimensional Resource Allocation

A heterogeneous network and resource allocation technology, applied in wireless communication, electrical components, etc., can solve problems such as large cross-layer interference

CN108924934BActive Publication Date: 2021-08-20XIDIAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2021-08-20

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Abstract

The invention proposes a heterogeneous network interference management method based on multi-dimensional resource allocation, which mainly solves the problem of large cross-layer interference in the heterogeneous network in the prior art. The implementation steps are: 1) Initialize the heterogeneous network; 2) The user initializes the associated base station according to the Max RSSI criterion; 3) The macro base station allocates RBs orthogonal to the small base station user for the macro user strongly related to the small base station user; 4) The small base station groups and allocates RBs for its associated users, and sends the CSI, user grouping and RB allocation results from the small base station users to the macro base station to the macro base station; 5) the macro base station selects macro users that are orthogonal to the small base station users, and provides It allocates the same RB as the user of the small base station; 6) Judging whether the algorithm is over, if not, execute step 7); 7) The base station adopts association control to adjust user grouping and RB allocation; 8) Judging whether the algorithm is over, if not and η< n θ , let η=η+Δη, execute step 3). The invention reduces cross-layer interference and interaction overhead.
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Description

technical field

[0001] The invention belongs to the technical field of wireless communication, and relates to a heterogeneous network interference management method, in particular to an interference management method based on multi-dimensional resource allocation under partial channel state information in an Orthogonal Frequency Division Multiple Access (OFDMA) network, which can be used in Acer The uplink of the heterogeneous wireless network where the base station and the small base station coexist. Background technique

[0002] In recent years, the rapid development of wireless communication technology and the urgent need of users for information communication, office or entertainment with other people anytime and anywhere have promoted the large-scale popularization of smart terminal equipment, and at the same time led to the rapid growth of users' demand for data traffic. In order to improve network throughput, operators deploy multiple small base stations within the co...

Examples

Embodiment Construction

[0051] Below with reference to accompanying drawing and specific embodiment, the present invention is described in further detail:

[0052] refer to figure 1 , the heterogeneous network of the present invention includes 1 macro base station and 3 small base stations, and each base station is configured with 4 antennas. There are 360 ​​users in the heterogeneous network, and the users are randomly distributed within the coverage area of ​​the macro base station, and the hotspot area where the small base station is located is densely populated. Each user can only be associated with one base station, and each RB under the base station is allocated to at most 4 users. In order to improve spectrum utilization and avoid co-layer interference between small base stations, small base stations partially reuse the spectrum resources of macro base stations, and use orthogonal spectrum between adjacent small base stations, use the same frequency spectrum.

[0053] refer to figure 2 , ...