AT 命令 - 与另一个小区的 3G 连接
我正在使用 Sierra 无线调制解调器（指南针 880/888、USB 308），并且我正在尝试找到一个 AT 命令来告诉调制解调器连接到另一个小区（另一个塔）。 我想这样做的原因是因为当我在一个非常拥挤的地方时，蜂窝网络出现故障，所以我想使用下一个最近的蜂窝。 这可能吗？
i'm using sierra wireless modems (compass 880/888, usb 308) and i'm trying to find an AT command that will tell the modem to connect to another cell (to another tower).
the reason i want to do it is because when i'm in a very crowded place, the cellular network is down, so i want to use the next nearest cell.
is that possible?
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我怀疑是否有命令可以执行此操作；小区之间的切换始终受到控制和控制。由网络发起。
尽管这个决定通常是根据协议级别的手机数据（周围 16 个小区的相对信号强度）做出的，但据我所知，您不能强迫它意识到 - 这样做永远没有任何意义：
如果蜂窝设备掉线，它会尽其所能来纠正这种情况 - 如果在范围内有任何蜂窝站属于其家庭网络（或它可以漫游）它将尝试附加到它会自动进行，如果没有，它会继续寻找。
如果由于容量问题而导致其下降，则基站控制器（一堆小区站点的管理者）应该已经尝试将负载分散到它知道其连接的设备在其范围内的任何相邻小区，如果失败，那么这是一个不错的选择它们也已经饱和了，所以切换到它们是没有用的。
I doubt there is a command to do this; a handoff between cells is always controlled & initiated by the network.
Despite the fact that this decision is often made based on data that comes from the phone at the protocol level (relative signal strengths of the surrounding 16 cells) you can't force it as far as I'm aware - there would never be any point in doing so:
If a cellular device drops off it's network it will do everyting in its power to rectify the situation - if there is any cell station in range belonging to its home network (or one it can roam on) it will try to attach to it automatically, if not it will keep on looking.
If its dropped due capacity problems the the base station controller (the govenor of a bunch of cell sites) should already have tried to spread the load to any adjacent cells it knows its attached devices are in range of, if thats fails its a good bet that they are saturated too, so switching to them would be of no use.
我怀疑是否有可能连接到相邻的小区。我不是专家，但据我所知，塔上的天线具有很强的方向性。这意味着相邻小区唯一指向您的天线是位于其远端的天线。因此，即使该天线足以连接（我对此表示怀疑），您很可能会收到非常差的信号，因为这些塔的功率被调整为在小区边界处（甚至可能之前）结束。
此外，即使有连接到特定单元的命令，您的设备也会注意到它连接到了错误的单元，并尝试将自己切换到当前的单元。
I doubt that it's possible to connect to a neighboring cell. I'm not an expert, but as far as I know the antennas on the towers are quite directional. This means that the only antennas of the neighboring cell that are pointing at you are the ones on the far side of it. So even if that antenna would be enough to connect (which I doubt) you would most likely have a very bad signal, since the power of those towers is adjusted to end at (or maybe even before) the cell border.
Also, even if there is a command to connect to a specific cell, your device will notice that it connected to the wrong one and try to hand itself off to your current cell.