According to the well developed Radion Frequency (rf) simulation, the complexity of Base Band (BB) simulation degrades, but unfortunately, the performance degrades too.

在射频频段进行信道模拟的真实性较高但较复杂，在基带进行的信道模拟在复杂度降低的同时，影响了真实性。

youdao

But I do think RIM is scrappy enough to hold on to a core portion of its core user group businesses and then build from that base, especially with the rollout of BB 10.

FORBES: Connect

With BB nowhere near its peaks of customer appeal, RIM will be primarily looking to get its installed base to upgrade to BB10 initially.

FORBES: RIM Manages To Conserve Cash As It Prepares For BB10 Launch Next Year