Adjacent channel inter-system interference coordination method and device

An interference coordination and inter-system technology, which is applied in the field of adjacent-frequency inter-system interference coordination, and can solve problems such as the mismatch between uplink and downlink between two cells in different systems, the impact of system capacity and communication performance, and the inability of spectrum allocation to coordinate planning between the two systems.

Inactive Publication Date: 2016-08-17
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in this process, new interference problems may arise. For example, the original continuous 10MHz licensed spectrum resource of TD-SCDMA, 5MHz of which is allocated to the TD-LTE system through spectrum reallocation, is configured as a 5MHz TD-LTE cell. In the same area, a 5MHz TD-SCDMA system is configured on a frequency adjacent to the 5MHz resource. The difference from the traditional TD-LTE and TD-SCDMA adjacent frequency deployment is that this is temporarily formed due to the dynamic spectrum configuration. Adjacent frequency coexistence between TD-LTE and TD-SCDMA cells with the same coverage or adjacent coverage; dynamic changes in spectrum configuration make it impossible to coordinate and plan the two systems in advance, so there may be a situation where uplink and downlink mismatch between two cells of different systems
This will greatly affect the capacity and communication performance of the two systems, thus departing from the original intention of improving spectrum utilization

Method used

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  • Adjacent channel inter-system interference coordination method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0138] When the TD-LTE system occupies the 5MHz spectrum resources of the TD-SCDMA system, the flow chart of the embodiment of interference coordination of the TD-SCDMA system cells adjacent to the frequency spectrum is as follows image 3 As shown, there is a direct interface between the base station eNB of the TD-LTE system and the radio network controller RNC of the TD-SCDMA system in this embodiment, and the specific description is as follows:

[0139] Step 1: the first network node eNB sends a frame structure matching configuration indication message to the second network node RNC through a direct interface;

[0140] According to the load statistics in a certain area, the load of the TD-LTE system is relatively high, and the load of the TDSCDMA system is relatively low. According to the decision of the operator or management node, the 5MHz spectrum resources (2015MHz-2020MHz) belonging to the TD-SCDMA system will be dynamically allocated to the TD-SCDMA system. The LTE syst...

Embodiment 2

[0149] When the TD-LTE system occupies the 5MHz spectrum resources of the TD-SCDMA system, the flow chart of the embodiment of interference coordination of the TD-SCDMA system cells adjacent to the frequency spectrum is as follows Figure 5 As shown, in this embodiment, the TD-LTE system base station BS (including the macro station eNB or micro station, such as femto, pico, HeNB, etc.) interacts with the TD-SCDMA system radio network controller RNC through the core network element, and the specific description is as follows :

[0150] Step 1: The second network node BS sends the frame structure matching configuration to the first network node RNC through the core network element MME (Mobility Management Entity) and SGSN (Serving GPRS Support Node, serving general packet radio service technical support node) request message;

[0151] According to the load statistics in a certain area, the load of the TD-LTE system is relatively high, and the load of the TD-SCDMA system is low....

Embodiment 3

[0165] When the TD-SCDMA system occupies the 5MHz spectrum resources of the T-DLTE system, the flow chart of the embodiment of interference coordination of the TD-LTE system cells adjacent to the frequency spectrum is as follows Figure 8 As shown, in this embodiment, the TD-LTE system base station BS (including macro base station eNB or micro base station, such as femto, pico, HeNB, etc.) interacts with the TD-SCDMA system radio network controller RNC through network management side network elements, and the two systems subordinate A cell can be a macro cell or a micro cell, and the specific description is as follows:

[0166] Step 1: the second network node RNC sends a frame structure matching configuration request message to the first network node BS through network management side network elements (Element Management System (EMS) (Element Management System) and Network Management System (NMS) (Network Management System));

[0167]According to the load statistics in a certa...

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Abstract

The present invention provides an adjacent channel inter-system interference coordination method and device. The method comprises: a first network node sends the frame structure matching and configuration indication message to a second network node; and the first network node receives the frame structure matching and configuration determination message from the second network node. According to the invention, the adjacent channel inter-system interference is avoided.

Description

technical field [0001] The present invention relates to the field of wireless communication, and more specifically, to a method and device for coordinating interference between adjacent frequency and different systems. Background technique [0002] With the continuous advancement of radio technology, a large number of various radio services have emerged, and the spectrum resources on which radio services rely are limited. Facing the continuous increase in people's demand for bandwidth, spectrum resources are extremely tense; and On the other hand, in the traditional fixed spectrum allocation mode, the spectrum is first allocated to services (Allocation), then allocated to regions or countries or departments, and finally assigned to specific communication sites. Spectrum resources are subject to fixed Distribution constraints, but reflect the low utilization rate. In a sense, it is this spectrum allocation system that is fixedly assigned to the authorized system that has cau...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/14
CPCH04W16/14
Inventor 刘星谢峰苗婷毕峰
Owner ZTE CORP
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