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Method and device for coordinating inter-cell interference

An inter-cell interference and interference coordination technology, applied in transmission monitoring, distributed allocation, network planning, etc., can solve problems such as actual network operation limitations, reduce TDD network system resource utilization, and inability to select subframe configuration methods. The effect of avoiding distractions

Active Publication Date: 2011-08-10
DATANG MOBILE COMM EQUIP CO LTD
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Problems solved by technology

Since the business conditions of each cell are different, this traditional method has caused great restrictions on the operation of the actual network. Each cell cannot choose a subframe configuration method according to its own real-time business status, which reduces the system resource utilization of the TDD network.

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  • Method and device for coordinating inter-cell interference

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Embodiment Construction

[0034] The method and device for interference coordination provided by the present invention will be described in more detail below with reference to the accompanying drawings and embodiments.

[0035] As one of the two basic duplex modes, the TDD mode has received more and more attention under the background of the increasing demand for bandwidth in broadband mobile communications. In a TDD system, uplink and downlink transmission use the same frequency resource, and uplink / downlink signals are transmitted on different time slots. In common TDD systems, including 3G TD-SCDMA (Time Division-Synchronous Code Division Multiple Access) system and 4G TD-LTE system, the division of uplink and downlink time slots is static or half Static, the usual practice is to determine the division of the uplink and downlink time slots according to the cell type and the approximate business ratio during the network planning process and keep it unchanged. This is a relatively simple approach in ...

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Abstract

The invention discloses a method and a device for coordinating inter-cell interference. The method comprises the following steps of: acquiring sub-frame configuration information of neighbor cells, judging whether the neighbor cells are positioned on the same sub-frame or not and whether transmission in different directions is configured or not; and if the neighbor cells are positioned on the same sub-frame and the transmission in the different directions is configured, coordinating the interference between the neighbor cells according to the acquired data transmission related information of the neighbor cells on the same sub-frame. By the method and the device, the transmission in the different directions on the same time resource can be performed between the neighbor cells of a time division duplexing (TDD) base station, and the mutual interference is avoided in an interference coordination mode; and the situation that the different cells cannot adapt to the service requirements of the cells when forced to use the same sub-frame configuration in the traditional TDD interference coordinating method is avoided.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method and device for inter-cell interference coordination. Background technique [0002] For the basic duplex mode adopted by the cellular system, such as figure 1 As shown, the TDD (Time Division Duplexing, Time Division Duplex) mode means that the uplink and downlink use the same working frequency band, and the uplink and downlink signals are transmitted at different time intervals, and there is a guard period between the uplink and downlink (Guard Period) ; FDD (Frequency Division Duplexing, Frequency Division Duplexing) mode means that the uplink and downlink use different working frequency bands, and the uplink and downlink signals can be transmitted on different frequency carriers at the same time, and there is a guard bandwidth between the uplink and downlink (Guard Band). [0003] The frame structure of the TD-LTE (Time Division-Long Term Evolu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/14
CPCH04L5/0032H04B17/00H04W72/082H04W88/08H04W16/14H04W16/10H04B17/345H04B17/382H04W72/54
Inventor 潘学明徐婧沈祖康
Owner DATANG MOBILE COMM EQUIP CO LTD
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