PTW and eDRX settings: Frequency of URC message with "+QPTWEDRXP"

Soufien · August 31, 2021, 9:42am

I am working with the BG77 device. I successfully set the eDRX settings with QPTWEDRXS command. These are the logs from QCOM:

[2021-08-30_18:21:23:551]AT+QPTWEDRXS=2,4,“0011”,“0010”

[2021-08-30_18:21:23:551]OK

2021-08-30_18:21:38:145]AT+CEDRXRDP

[2021-08-30_18:21:38:145]+CEDRXRDP: 4,“0010”,“0010”,“0011”

[2021-08-30_18:21:38:145]OK
[2021-08-30_18:22:36:624]AT+QPTWEDRXS?

[2021-08-30_18:22:36:624]+QPTWEDRXS: 4,“0011”,“0010”,“0010”,“0011”

[2021-08-30_18:22:36:624]OK

The choosen configuration with QPTWEDRXS command provides the URC +QPTWEDRXP with a variable frequency: it is usually each 56 minutes but the frequency changes few times between 1 minute 56 minutes . Do you have an explanation ?

I also received few times an URC equal to +QPTWEDRXP: 2. In which case do I receive this URC ?

These are the logs from QCOM:

[2021-08-30_19:15:23:806]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-30_19:15:24:087]
[2021-08-30_19:15:24:087]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-30_20:09:24:095]
[2021-08-30_20:09:24:095]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-30_20:09:24:345]
[2021-08-30_20:09:24:345]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-30_21:03:24:322]
[2021-08-30_21:03:24:322]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-30_21:03:24:525]
[2021-08-30_21:03:24:525]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-30_21:15:56:069]
[2021-08-30_21:15:56:069]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-30_21:57:24:534]
[2021-08-30_21:57:24:534]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-30_21:57:24:753]
[2021-08-30_21:57:24:753]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-30_22:51:24:761]
[2021-08-30_22:51:24:761]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-30_22:51:24:964]
[2021-08-30_22:51:24:964]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-30_23:45:24:988]
[2021-08-30_23:45:24:988]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-30_23:45:25:269]
[2021-08-30_23:45:25:269]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-31_00:12:15:829]
[2021-08-31_00:12:15:829]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-31_00:20:47:226]
[2021-08-31_00:20:47:226]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-31_00:35:48:937]
[2021-08-31_00:35:48:937]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-31_00:39:25:277]
[2021-08-31_00:39:25:277]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-31_00:39:25:495]
[2021-08-31_00:39:25:495]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-31_00:43:22:705]
[2021-08-31_00:43:22:705]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-31_00:55:16:288]
[2021-08-31_00:55:16:288]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-31_01:01:47:962]
[2021-08-31_01:01:47:962]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-31_01:02:06:536]
[2021-08-31_01:02:06:536]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-31_01:33:25:503]
[2021-08-31_01:33:25:503]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-31_01:33:25:722]
[2021-08-31_01:33:25:722]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-31_02:00:09:410]
[2021-08-31_02:00:09:410]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-31_02:27:22:637]
[2021-08-31_02:27:22:637]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-31_02:27:22:731]
[2021-08-31_02:27:22:731]+QPTWEDRXP: 2
[2021-08-31_02:27:22:903]
[2021-08-31_02:27:22:903]+QPTWEDRXP: 2

[2021-08-31_02:27:22:903]+QPTWEDRXP: 2
[2021-08-31_02:27:23:496]
[2021-08-31_02:27:23:496]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-31_02:27:28:901]
[2021-08-31_02:27:28:901]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-31_02:44:02:341]
[2021-08-31_02:44:02:341]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-31_02:52:14:773]
[2021-08-31_02:52:14:773]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-31_03:21:28:924]
[2021-08-31_03:21:28:924]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-31_03:21:29:112]
[2021-08-31_03:21:29:112]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-31_04:15:29:136]
[2021-08-31_04:15:29:136]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-31_04:15:29:339]
[2021-08-31_04:15:29:339]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-31_04:17:36:418]
[2021-08-31_04:17:36:418]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-31_04:32:13:807]
[2021-08-31_04:32:13:807]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-31_04:40:25:333]
[2021-08-31_04:40:25:333]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-31_04:44:14:482]
[2021-08-31_04:44:14:482]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-31_05:09:29:347]
[2021-08-31_05:09:29:347]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-31_05:09:29:566]
[2021-08-31_05:09:29:566]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-31_05:52:47:083]
[2021-08-31_05:52:47:083]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-31_06:01:39:537]
[2021-08-31_06:01:39:537]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-31_06:03:29:574]
[2021-08-31_06:03:29:574]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-31_06:03:29:792]
[2021-08-31_06:03:29:792]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-31_06:57:29:801]
[2021-08-31_06:57:29:801]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-31_06:57:30:097]
[2021-08-31_06:57:30:097]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-31_07:26:21:771]
[2021-08-31_07:26:21:771]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-31_07:51:30:090]
[2021-08-31_07:51:30:090]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-31_07:51:30:309]
[2021-08-31_07:51:30:309]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-31_08:45:30:305]
[2021-08-31_08:45:30:305]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-31_08:45:30:539]
[2021-08-31_08:45:30:539]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-31_09:39:30:531]
[2021-08-31_09:39:30:531]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-31_09:39:30:766]
[2021-08-31_09:39:30:766]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-31_10:33:30:742]
[2021-08-31_10:33:30:742]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-31_10:33:30:977]
[2021-08-31_10:33:30:977]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-31_10:50:08:257]
[2021-08-31_10:50:08:257]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-31_11:27:30:971]
[2021-08-31_11:27:30:971]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-31_11:27:31:377]
[2021-08-31_11:27:31:377]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”

Stephen.Li-Q · September 1, 2021, 3:59am

when the module do TAU update ， one new URC will come
I have checked the value , why you said it is 56 minutes, Have you enable PSM feature ？

Soufien · September 1, 2021, 9:01am

I am thankful for your reply.

I did not enable the PSM feature. For my application, I am not interested on this feature and I want to use only the eDRX feature.

I computed the 56 minutes from the logs within QCOM. This is an exemple of the 56 minutes between two consecutive URCs:

[2021-08-30_19:15:24:087]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”
[2021-08-30_20:09:24:095]+QPTWEDRXP: 4,“0011”,“0010”,“0010”,“0011”

I checked the configuration of PSM for my device and it is desactived. This is the answer of my device to the AT+CPSMS? command:
[2021-08-31_10:40:21:191]AT+CPSMS?

[2021-08-31_10:40:21:191]+CPSMS:0,“01100000”,“00000000”

As the TAU was not set before in my case, what happen in this case ?