A simulation system of LTE baseband terminal based on pci-e interface

Abstract

The invention provides a long term evolution (LTE) base band terminal simulation system based on a peripheral component interconnect express (PCI-E) interface, which comprises a personal computer (PC) host, a base band terminal simulator, a field programmable gate array, a PCI-E interface and an eNodeB plate. The PC host is used for controlling the base band terminal simulator according to a measurement mode and configuration parameters and forwarding upstream data and downstream data. The base band terminal simulator is used for testing a physical layer of a simulation system and comprises a digital signal processor for processing an LTE base band terminal communication protocol and a relevant application protocol. The field programmable gate array is used for parallelly processing of high speed digital signals and used for high repeatability data operation. The PCI-E interface is used for connecting the PC host and the base band terminal simulator. The eNodeB plate is used for sending the downstream data to the base band terminal simulator and receiving data and performance feedback statistics from the base band terminal simulator. Compared with the prior art, the simulation system guarantees each testing index of an eNodeB device, improves testing efficiency, and saves testing cost and covered space.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to the simulation test technology of an LTE baseband terminal based on a PCI-E interface in the field of wireless communication. Background technique [0002] In the design process of LTE enhanced base station (eNodeB), it is necessary to conduct a comprehensive test on the base station equipment, including software test, hardware test and wireless performance index test. Correspondingly, LTE baseband communication protocol conformance test and wireless performance index are consistent Continuity test, radio resource management conformance test and end-to-end service verification test form the basis of eNodeB certification test. [0003] Generally speaking, the LTE system design architecture includes PHY (Physicallayer, physical layer), MAC (MediaAccessControllayer, media access control layer), RLC (RadioLinkControllayer, radio link control layer), PDCP (PacketDataConvergencePr...

AI Technical Summary

Problems solved by technology

However, this method of separately testing the uplink signal and the downlink signal is very unfavorable for the physical layer of the LTE system and the protocol when the uplink and downlink interaction is required, such as HARQ, RACH, etc.

On the other hand, the test instruments manufactured according to the terminal test plan are bulky and bloated, and even require rack boards to work, occupying a large area and high cost, which brings a lot of inconvenience to the laboratory test

In addition, most terminal test simulation solutions use SRIO to cooperate with the rack to realize data transmission from the backplane. In the existing technology, although the SRIO2.0 protocol standard can support 16x, all current hardware manufacturers can only achieve 4x. Here Under normal circumstances, the actual effective transmission rate of the 4x series of SRIO2.0 standard is only 16Gbps (that is, 5Gbps*4*0.8, where 0.8 represents the ratio between the actual effective transmission rate and the maximum transmission rate). Scalability is very limited when using larger bandwidth and carrying larger data

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