System and method for testing radio frequency (RF) of long term evolution (LTE) base station
A technology of radio frequency test system and base station, which is applied in the field of radio frequency test system of LTE base station, can solve the problems such as the inability to meet the test requirements of LTE system, and achieve the effects of shortening test time, saving test cost, and saving manpower and material resources
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[0024] Example one
[0025] See figure 1 , Which is a schematic structural diagram of an embodiment of an LTE base station radio frequency test system according to this application. Such as figure 1 As shown, the system includes: control PC101, internal local area network 102, auxiliary control unit 103a, radio remote unit RRU103b, radio frequency switch 103d, circulator 103e, spectrum analyzer 103f and signal generator 103g, among which,
[0026] The control PC101 is used to issue control commands to the spectrum analyzer 103f, the signal generator 103g, the radio frequency switch 103d, the RRU103b, and the auxiliary control unit 103a through the internal LAN 102;
[0027] Among them, the internal local area network 102 is composed of multiple Ethernet switches. The signal generator 103f, spectrum analyzer 103g, control PC101, radio frequency switch 103d, auxiliary control unit 103a and RRU103b are connected to the internal LAN 102 through a network cable, so as to control the PC10...
Example Embodiment
[0052] Example two
[0053] Usually, the power of the baseband signal output from the remote radio unit RRU is too large, and the spectrum analyzer may be burned out. Similarly, the power of the radio frequency signal on the radio frequency antenna port selected from the radio frequency switch may also be high. Therefore, the embodiment of the present application also provides a radio frequency test system for an LTE base station. The difference between this embodiment and the first embodiment is that an electronically adjustable attenuator is added between the remote radio unit RRU and the radio frequency switch. See image 3 , Which is a schematic structural diagram of another embodiment of a radio frequency test system for an LTE base station of this application. The system includes: a control PC101, an internal local area network 102, an auxiliary control unit 103a, a remote radio unit RRU103b, and an electronically adjustable attenuator 103c, The radio frequency switch 103d...
Example Embodiment
[0065] Example three
[0066] The embodiment of the present application also provides a radio frequency test system for an LTE base station. The difference between this embodiment and the second embodiment is that a channel simulator is added between the remote radio unit RRU and the ESC attenuator. See Figure 4 , Which is a schematic structural diagram of another embodiment of a radio frequency test system for an LTE base station of this application. The system includes: a control PC101, an internal local area network 102, an auxiliary control unit 103a, a radio remote unit RRU103b, a channel simulator 103h, and Tuning attenuator 103c, radio frequency switch 103d, circulator 103e, spectrum analyzer 103f and signal generator 103g. This implementation introduces a channel simulator 103h, which is used to simulate various wireless channel propagation environment models under the control of the control PC101 to test wireless radio frequency performance indicators. Since the contr...
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