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Relay node simulator and test method

A technology of relay nodes and testing methods, which is applied in relay system monitoring, transmission monitoring, electrical components, etc., and can solve problems such as signal interference

Active Publication Date: 2013-03-27
ANRITSU CORP
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  • Description
  • Claims
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Problems solved by technology

Also, when any signal is delayed, there is sometimes interference between those signals

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  • Relay node simulator and test method
  • Relay node simulator and test method
  • Relay node simulator and test method

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Embodiment Construction

[0022] The relay node simulator 1 according to the present invention is a simulator for simulating a relay node. Such as figure 1 As shown, the relay node simulator 1 is interposed between the eNB (base station simulation device) 500 and the terminal under test 600 . The relay node simulator 1 is configured including a downlink processing unit 10 , an uplink processing unit 20 , a directional coupler 31 , and a directional coupler 32 .

[0023] The directional coupler 31 receives an RF signal (that is, a base station signal) E0' from the eNB 500 and transmits the RF signal to the downlink processing unit 10. In addition, directional coupler 31 receives a signal from uplink processing unit 20 and transmits the signal to eNB 500 .

[0024] The downlink processing unit 10 is a processing block for simulating downlink processing of a relay node. The downlink processing unit 10 receives the analog RF signal E0' transmitted from the eNB 500 through the directional coupler 31. Th...

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Abstract

The present invention provides a relay node simulator capable of simulating a signal from a base station and a signal from a relay node in accordance with a positional relationship between the base station, the relay node, and a terminal under test. The relay node simulator that outputs a test signal obtained by simulating a signal in which a first RF signal from a base station and a second RF signal transmitted to a mobile communication terminal by a relay node receiving the first RF signal are multiplexed, the relay node simulator including a relay processing unit that generates a second baseband signal on the basis of a first baseband signal, a delay processing unit that provides a predetermined delay to the second baseband signal, a gain adjustment unit that changes a level of the first baseband signal, an adder that adds the first baseband signal and the second baseband signal, and a transmission unit that converts an added signal into an RF signal and transmits a converted signal as the test signal.

Description

technical field [0001] The present invention relates to a technique of a relay node simulator for simulating communication between a relay base station and a mobile communication terminal. Background technique [0002] The standardization of LTE-Advanced, which is a further development of LTE (Long Term Evolution) as a wireless access method for the next-generation mobile communication system, is being promoted through 3GPP. In LTE-Advanced, a relay technology for reproducing radio signals between a relay base station and a mobile communication terminal at a layer 3 level is being studied. By applying relay nodes using this relay technology, it is expected to effectively expand the coverage area in places where it is difficult to secure a wired backhaul line for wired connection between devices constituting a mobile communication system such as switching centers and wireless base stations. (Patent Document 1). [0003] Such a relay node sometimes operates a wireless backha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/00H04B17/40
CPCH04W24/06H04W24/00
Inventor 桥本礼一细川俊
Owner ANRITSU CORP
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