NB状态
- DRX：Discontinuous Reception（不连续接收），为模块 Modem 的工作模式
- eDRX：extended DRX（扩展不连续接收），为模块 Modem 的工作模式。
- PSM：Power Saving Mode（省电模式），为模块 Modem 的工作模式。
PSM 模式状态转化
在 PSM 模式下，终端不再监听寻呼，但终端还是注册在网络中；因此，要发送数据时不需要重新连接或建立 PDN 连接。在模块 Modem 进入 PSM 模式后，仍然可以主动发送上行数据到平台。
eDRX 模式状态转化
术语
参考
T3324 和 T3412 设置
从M5311模组说明手册查到说明如下:
T3324
T3324的设置和 GPRS Timer 2
IE in 3GPP TS 24.008 Table 10.5.163/3GPP TS 24.008. See also 3GPP TS 23.682, 3GPP TS
23.060 and 3GPP TS 23.401. The default value, if available, is manufacturer specific有关
Timer value (octet 2)
Bits 5 to 1 represent the binary coded timer value.
Bits 6 to 8 defines the timer value unit for the GPRS
Bits
|8|7|6|说明|
|:–|:–|:–|
|0 |0 |0 |value is incremented in multiples of 2 seconds
|0 |0 |1 |value is incremented in multiples of 1 minute
|0 |1 |0 |value is incremented in multiples of decihours
|1 |1 |1 |value indicates that the timer is deactivated.
例子
“00100100” = 4 minutes
T3412 (TAU)
T3412(TAU)的设置和GPRS Timer 3 IE in 3GPP TS 24.008 Table
10.5.163a/3GPP TS 24.008. See also 3GPP TS 23.682 and 3GPP TS 23.401. The default
value, if available, is manufacturer specific. 有关;
摘录重要点如下:
GPRS Timer 3 value (octet 3)
Bits 5 to 1 represent the binary coded timer value.
Bits 6 to 8 defines the timer value unit for the GPRS timer as follows:
Bits
|8|7|6|说明|
|:–|:–|:–|
|0 |0 |0 |value is incremented in multiples of 10 minutes|
|0 |0 |1 |value is incremented in multiples of 1 hour|
|0 |1 |0 |value is incremented in multiples of 10 hours|
|0 |1 |1 |value is incremented in multiples of 2 seconds|
|1 |0 |0 |value is incremented in multiples of 30 seconds|
|1 |0 |1 |value is incremented in multiples of 1 minute|
|1 |1 |0 |value is incremented in multiples of 320 hours (NOTE)|
|1 |1 |1 |value indicates that the timer is deactivated.|
NOTE: This timer value unit is only applicable to the T3312 extended value IE
and T3412 extended value IE (see 3GPP TS 24.301 [120]). If it is
received in an integrity protected message, value shall be interpreted as
multiples of 320 hours. Otherwise value shall be interpreted as multiples of 1 hour.
例子
“01000111” = 70 hours
