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Interference suppression method and device in wireless cellular network

A wireless cellular network and interference suppression technology, applied in wireless communication, network topology, network planning, etc., can solve problems such as serious downlink interference of large cell base stations, communication interruption between HUE and small cell base stations, communication interruption between MUE and large cell base stations, etc. , to achieve the effect of reducing downlink interference, avoiding downlink interference, and reducing the impact

Inactive Publication Date: 2010-12-22
NTT DOCOMO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the active MUE is communicating with a large cell base station, if the MUE is close to a small cell base station, the MUE will experience serious downlink interference from the small cell base station. Communication interruption between
In addition, when the active HUE and the small cell base station are communicating, if the HUE is close to a large cell base station, the downlink interference of the large cell base station to the HUE will be serious, which may cause the HUE and small cell Communication between base stations is interrupted

Method used

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  • Interference suppression method and device in wireless cellular network
  • Interference suppression method and device in wireless cellular network
  • Interference suppression method and device in wireless cellular network

Examples

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Embodiment 1

[0061] The operation flow of the interference suppression method in the wireless cellular network provided by this embodiment is as follows figure 1 As shown, it mainly includes:

[0062] Step 101: When a second cellular user in an activated state is subjected to downlink interference from a surrounding first cellular base station, notify the first cellular base station that there is a second cellular user subject to downlink interference;

[0063] Step 102: The first cellular base station re-allocates the spectrum resource used by the first cellular user communicating with itself, so as to reduce the downlink interference of the first cellular base station to the second cellular user.

[0064] It should be noted that, in the embodiment of the present invention, the foregoing spectrum resource may be a sub-carrier (Sub-carrier), a resource block (RB, Resource Block), an aggregated carrier (CC, ComponentCarrier) or a carrier band (Band).

[0065]Furthermore, when the second ce...

Embodiment 2

[0119] In addition to re-allocating the spectrum resources used by the first cellular user to communicate with itself by the first cellular base station to eliminate the downlink interference of the first cellular base station to the second cellular user, the second cellular base station can also re-schedule the spectrum resources In order to avoid the downlink interference of the first cellular base station to the second cellular user.

[0120] Specifically, the interference suppression method in the wireless cellular network described in this embodiment includes: when the second cellular user in the active state is subjected to downlink interference from a surrounding first cellular base station, the second cellular The spectrum resource used by the second cellular user is allocated, that is, the spectrum resource not occupied by the first cellular base station is re-allocated to the second cellular user.

[0121] It should be noted that, in this embodiment, the foregoing sp...

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Abstract

The invention discloses an interference suppression method in a wireless cellular network, which comprises the following steps: when a second cellular user in active state suffers from the downlink interference of a first cellular base station around, the first cellular base station is notified that a second cellular user currently suffers from the downlink interference thereof; and the first cellular base station re-distributes the spectrum resources used by the first cellular user communicating therewith. The invention further discloses a first cellular base station, a second cellular user and a second cellular base station for implementing the interference suppression method. Through the invention, when a second cellular user in active state suffers from the downlink interference of a first cellular base station around, the first cellular base station can adjust the spectrum resources used by the first cellular user through resource scheduling, so as to reduce the downlink interference on the second cellular user in active state and reduce influence on communication between the second cellular user and the second cellular base station.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to an interference suppression method and device in a wireless cellular network. Background technique [0002] The wireless cellular network utilizes the network structure of the cellular form to provide communication services such as voice and data for mobile users. Typically, a cell provides coverage for a certain range of wireless communication transmissions. Among them, the cell with the largest wireless transmission coverage radius is a macrocell (Macrocell) cell. Multiple macro cells can realize seamless wireless communication transmission coverage in a large area. A base station that supports a macro cell is called a macro cell base station, which has a relatively high transmission power and a high antenna installation height, such as a base station eNodeB (eNB) in a 3GPP LTE or 3GPP LTE-A network. [0003] In order to increase the capacity of the wireless c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/14H04W24/10H04W72/54
CPCH04W72/082H04W72/0413H04W84/045H04W72/21H04W72/541
Inventor 白勇周珏嘉冯明海陈岚
Owner NTT DOCOMO INC
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