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Method and system for restraining interference between adjacent-channel coexisting systems

A technology of adjacent frequency interference and adjacent frequency coexistence, applied in the field of communication, can solve problems such as system performance degradation, and achieve the effect of improving adaptability, improving service quality and spectrum utilization efficiency

Active Publication Date: 2012-07-04
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The technical problem to be solved by the present invention is to provide a method and system for suppressing interference between adjacent frequency coexistence systems to solve the problem of system performance degradation caused by adjacent frequency interference between adjacent frequency coexistence systems

Method used

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  • Method and system for restraining interference between adjacent-channel coexisting systems
  • Method and system for restraining interference between adjacent-channel coexisting systems
  • Method and system for restraining interference between adjacent-channel coexisting systems

Examples

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application example 1

[0118] Such as image 3 As shown, when the WiMAX system and the FDD-LTE system coexist in adjacent frequencies, the terminal UE-1 in the FDD-LTE system is determined to be or may be interfered by the terminal MS-2 in the WiMAX system.

[0119] Such as Figure 4 As shown, the interference suppression method between adjacent frequency coexistence systems includes the following steps:

[0120] 1. The FDD-LTE system sends the signaling containing UE-1 parameter information to the WiMAX system; wherein, the UE-1 parameter information includes the reference signal information sent by UE-1;

[0121] 2. The WiMAX system uses control signaling to send the parameter information of UE-1 to MS-2;

[0122] 3. According to the received parameter information of UE-1, MS-2 judges whether it is or may be subjected to adjacent frequency interference from UE-1. frequency interference;

[0123] If the parameter information contains the location information of UE-1, MS-2 can judge whether UE-1...

application example 2

[0127] Such as image 3 As shown, when the WiMAX system and the FDD-LTE system coexist in adjacent frequencies, the terminal UE-1 in the FDD-LTE system may receive or be interfered by the terminal MS-2 in the WiMAX system.

[0128] Such as Figure 5 As shown, the interference suppression method between adjacent frequency coexistence systems includes the following steps:

[0129] 1. UE-1 determines that it is or may be interfered by terminal MS-2 in the WiMAX system according to the obtained parameter information of MS-2; the judgment method can be found in the previous application example;

[0130] 2. UE-1 sends the parameter information of MS-2 to its serving base station NodeB-1, and the FDD-LTE system to which NodeB-1 belongs sends the signaling containing the parameter information of MS-2 to the WiMAX system;

[0131] 3. The WiMAX system adjusts the resource allocation of MS-2 through the serving base station BS-2 of MS-2, so as to control the adjacent frequency interfer...

application example 3

[0133] Such as image 3 As shown, when the WiMAX system and the FDD-LTE system coexist in adjacent frequencies, the terminal UE-1 in the FDD-LTE system may receive or be interfered by the terminal MS-2 in the WiMAX system.

[0134] Such as Figure 6 As shown, the interference suppression method between adjacent frequency coexistence systems includes the following steps:

[0135] 1. UE-1 determines that it is or may be interfered by terminal MS-2 in the WiMAX system according to the obtained parameter information of MS-2; the judgment method can be seen in Application Example 1;

[0136] 2. UE-1 directly sends the obtained parameter information of MS-2 to the WiMAX system (such as the serving base station BS-2 of MS-2) through signaling, and the WiMAX system adjusts the MS-2 parameter information through the serving base station BS-2 of MS-2. 2 to control the adjacent frequency interference from MS-2 to UE-1.

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Abstract

The invention discloses a method and a system for restraining interference between adjacent-channel coexisting systems, which are applied to two communication systems in different modes. The method includes: a first communication node in a first communication system is subjected to or possibly subjected to adjacent-channel interference from a second communication node in a second communication system; and the first communication system and the second communication system cooperate for adjustment to control the adjacent-channel interference on the first communication node. The system comprises the first communication node in the first communication system and cooperative adjusting devices in the first communication system and the second communication system, wherein the first communication node is used for determining the adjacent-channel interference or possible adjacent-channel interference from the second communication node in the second communication system, and the cooperative adjusting devices are used for realizing cooperative adjustment between the first communication system and the second communication system to control the adjacent-channel interference on the first communication node. Using the method and the system can improve service quality of the system and frequency spectrum utilization rate and evidently improve adaptability of wireless communication systems to practical environment.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method and system for suppressing interference between adjacent frequency coexistence systems. Background technique [0002] Interference in a communication system refers to all non-useful signals entering a channel or communication system. Intersystem interference refers to the interference caused by signals generated by other systems to this system. There are many types of interference between communication systems, mainly including: adjacent frequency interference, spurious interference, intermodulation interference, and blocking interference. Adjacent frequency interference refers to the interference caused by the power of an interfering node using frequency f1 falling within the passband of a receiver receiving a signal of frequency f2 adjacent to f1. [0003] There are also various reasons for interference, including: the original dedicated radio system o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/14
CPCH04L1/0001H04W28/048H04W28/04
Inventor 鲁照华刘锟罗薇李卫敏刘向宇
Owner ZTE CORP
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