Method for strengthening interference coordination in layered heterogeneous network of mobile communication system

A mobile communication system and heterogeneous network technology, applied in the field of interference coordination problem, can solve problems such as reducing mutual interference, and achieve the effect of avoiding data rate, avoiding cross-layer interference and same-layer interference

Inactive Publication Date: 2011-08-10
SOUTHEAST UNIV
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Problems solved by technology

[0005] Aiming at the problem that the existing inter-cell interference coordination method cannot be applied in the macro cell + pico cell scenario in the LTE-A heterogeneous network, the present invention proposes a partially loaded subframe (PLS, Partially Loaded Subframe) format, through flexible Method of subframe configuration to reduce downlink mutual interference between different types of stations

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  • Method for strengthening interference coordination in layered heterogeneous network of mobile communication system
  • Method for strengthening interference coordination in layered heterogeneous network of mobile communication system
  • Method for strengthening interference coordination in layered heterogeneous network of mobile communication system

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Embodiment Construction

[0034] Specific embodiments of the present invention are as follows:

[0035] Step 1: All UEs in the macro cell measure and report the received reference signal received power RSRP;

[0036] The station receiving the largest RSRP is a user of this cell, and this user is an active user of the current macro cell;

[0037] The user who received the largest RSRP from the small station is an active user of the current small station;

[0038] Step 2: The macro cell collects the PRB_Indicator of the neighboring macro cell through the X2 interface, and all the small stations send their own PRB_Indicators to the macro station of the macro cell where they are located. The small station sends a request to the macro station of the macro cell where it is located to obtain the resource usage of the site to be coordinated, and the macro station sends the PRB_Indicator of the relevant station according to the request of the small station.

[0039] Step 3: The PRB_Indicator of the main inter...

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Abstract

The invention discloses a method for strengthening interference coordination in the layered heterogeneous network of a mobile communication system, which is characterized by comprising the following steps: firstly, defining a partially loaded subframe (PLS) format; obtaining a site collection which needs to be coordinated by aiming at a macro cell+Picocell scene in an LTE-A (Long Term Evolution-Advanced) heterogeneous network; and finally, coordinating sites in the collection by users. The method can be used for coordinating various types of site collections because the method is free from limitation of different types of site collections in the layered heterogeneous network to obtain the effect on simultaneously avoiding cross-layer interference and same-layer interference; according to the load situation in the cell, adopted resource can be flexibly regulated to respond environment variation and load variation in the cell in time.

Description

technical field [0001] The patent of the invention belongs to the field of mobile communication, and specifically relates to the problem of interference coordination under the coexistence of macro stations and small stations in the layered heterogeneous network of the fourth generation mobile communication system. Background technique [0002] The fourth-generation mobile communication system LTE-A (Long Term Evolution-Advanced) deploys small cells on the basis of macro cells (covered by macro stations) in cellular network topology. Small cells are composed of various types of low power nodes (LPN, Low Power Node), such as Micro stations, Pico stations, and Femto stations (collectively referred to as small stations) coverage, to achieve short-distance and small-area coverage, and optimize indoor and hotspot scenarios and cell boundaries. These low-power nodes are completely under the coverage of the macro cell (Macrocell), forming another layer of topology on top of the exis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/14H04W28/08H04W72/04H04W72/12H04L27/26
Inventor 潘志文高瑞芳刘楠尤肖虎
Owner SOUTHEAST UNIV
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