Method and device for evaluating interferences of different systems to terminal and overall interferences to terminal

A different system and terminal technology, applied in the field of communication

Active Publication Date: 2010-03-17
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Aiming at the problem of not being able to evaluate the heterogeneous interference of multiple RRU base transceiver stations to the terminal and the comprehensive interference to the terminal in the mu

Method used

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  • Method and device for evaluating interferences of different systems to terminal and overall interferences to terminal
  • Method and device for evaluating interferences of different systems to terminal and overall interferences to terminal
  • Method and device for evaluating interferences of different systems to terminal and overall interferences to terminal

Examples

Experimental program
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Effect test

Embodiment 1

[0064] Figure 6 It shows a flow chart of a method for evaluating interference between a multi-RRU base station transmitter of a dual-mode system and a terminal in different systems according to an embodiment of the present invention, including:

[0065] Step S10, evaluating the spurious interference, intermodulation interference and adjacent channel interference generated by each RRU base station transmitter;

[0066] Step S20, according to spurious interference, intermodulation interference and adjacent channel interference, evaluate the different system interference of each RRU base station transmitter to the terminal;

[0067] Step S30, evaluating the different-system interference of all RRU base station transmitters to the terminal according to the different-system interference of each RRU base station transmitter to the terminal.

[0068] In the dual-mode multi-RRU system, based on the problem of different carrier bandwidths between GSM and UMTS, this embodiment solves ...

Embodiment 2

[0070] For the GSM and UMTS dual-mode system with multiple RRUs, the evaluation method for the interference of the dual-mode base station transmitter to the different system of the GSM mobile phone is as follows:

[0071] Assume that the frequency used by the GSM mobile phone is f, and the mobile phone can receive signals from m dual-mode RRUs, namely RRU1, RRU2, ... RRUm.

[0072] 1) Evaluate the spurious interference generated by each dual-mode RRU UMTS system transmitter to the GSM mobile phone (different system), taking RRUi as an example. The GSM bandwidth is split into n narrowband signals (test bandwidth), for example, the measurement bandwidth is 100 kHz, then the GSM bandwidth needs to be split into 2 measurement bandwidths, ie n=2. From the spurious index P of UMTS on the GSM frequency band in the 3GPP agreement TS25.101 SE1 , the spur is according to the probability p1=0.2×(1+0.05) n-1 appears, the calculation of spurious interference SEi is:

[0073] ...

Embodiment 3

[0086] For the GSM and UMTS dual-mode base station system, the interference received by the mobile phone receiver is not only the interference of the different system, but also the interference of the system. In the interference of this system, for GSM mobile phones, the same-channel interference and adjacent-channel interference from all base station frequencies are mainly considered. For UMTS mobile phones, the interference of the local cell and adjacent cell interference is mainly considered.

[0087] Based on the inter-system interference of each RRU base station transceiver station to the terminal obtained in step 5 in the above embodiment, as Figure 7 as shown,

[0088] 6b) Evaluate the co-channel interference of each dual-mode RRU GSM system (this system) transmitter to the GSM mobile phone receiver, taking RRUi as an example. Assuming that N of the GSM active carrier frequencies in the RRU are the same frequency as the GSM mobile phone frequency f, the co-channel int...

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Abstract

The invention relates to a method for evaluating the interferences of different systems to a terminal, which comprises the steps of evaluating spurious interference, intermodulation interference and adjacent channel interference generated by each RRU base-station transmitter; evaluating the interferences of the different systems to the terminal of each RRU base station transmitter according to the spurious interference, the intermodulation interference and the adjacent channel interference; and evaluating the interferences of the different systems to the terminal of all the RRU base station transmitters according to the interferences of the different systems to the terminal of each RRU base station transmitter. Meanwhile, the invention further provides the method for evaluating the comprehensive interferences to the terminal, which comprises the interferences of the system and the interferences of the different systems. The use of the method can better evaluate the interferences of the base station transmitters of a multi-mold system to the terminal.

Description

technical field [0001] The present invention relates to the field of communications, in particular, to a multi-mode system multi-RRU (Regenerative Repeater Unit: regenerative repeater unit, also known as radio remote) base station transmitter that interferes with different systems of the terminal and interferes with the overall terminal evaluation methods and devices. Background technique [0002] In the GSM (Global System of Mobile communications, Global System for Mobile Communications) and Universal Mobile Telecommunications System (Universal Mobile Telecommunications System, referred to as UMTS) dual-mode system, the GSM carrier frequency and the UMTS carrier frequency can be co-sited and share the RRU. Sharing can greatly reduce the cost of base station equipment. [0003] For the transmitting end of the GSM and UMTS dual-mode base station, the interference caused by the interference between the carrier frequencies of the two systems to the mobile phone mainly consider...

Claims

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Application Information

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IPC IPC(8): H04W24/08H04W88/10
Inventor 郝瑞晶黄伟芳
Owner ZTE CORP
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