Overcoming Challenges of Testing MSR Base Stations
应用文章
For cellular networks to cost-effectively migrate to 3.9G and 4G, they need base stations that can handle multiple radio-access technologies simultaneously. Next-generation Multi-Standard Radio (MSR) base stations can simultaneously transmit multiple carriers of different radio access technologies, such as GSM, W-CDMA, HSPA and LTE, in a single base-station unit.
The MSR test challenge
MSR developers face all the usual design problems of single-carrier systems, along with tremendous new potential for adverse interactions between dissimilar signals on a single unit. To ensure conformance, MSR base stations must be tested in accordance with the 3GPP Release 9 (TS37 series) standard. The TS37 document covers the multi-carrier MSR combinations of 3GPP frequency-division duplex (FDD) and time-division duplex (TDD) formats. Receiver conformance testing requirements are similar to those of each single format, but transmitter conformance tests must be performed under MSR multi-carrier allocating scenarios.