Changes for page NBSN95_NBSN95A -- NB-IoT Sensor Node User Manual
Last modified by Mengting Qiu on 2024/04/02 16:33
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... ... @@ -900,39 +900,24 @@ 900 900 901 901 902 902 903 -1. FAQ 904 -11. How to change the LoRa Frequency Bands/Region? 903 += 4. FAQ = 905 905 905 +== 4.1 How to change the LoRa Frequency Bands/Region? == 906 + 906 906 You can follow the instructions for [[how to upgrade image>>path:#3ygebqi]]. 907 907 When downloading the images, choose the required image file for download. 908 908 909 909 911 +How to set up LSE01 to work in 8 channel mode By default, the frequency bands US915, AU915, CN470 work in 72 frequencies. Many gateways are 8 channel gateways, and in this case, the OTAA join time and uplink schedule is long and unpredictable while the end node is hopping in 72 frequencies. 910 910 911 -How to set up LSE01 to work in 8 channel mode 912 912 913 -By default, the frequency bands US915, AU915, CN470 work in 72 frequencies. Many gateways are 8 channel gateways, and in this case, the OTAA join time and uplink schedule is long and unpredictable while the end node is hopping in 72 frequencies. 914 - 915 - 916 916 You can configure the end node to work in 8 channel mode by using the AT+CHE command. The 500kHz channels are always included for OTAA. 917 917 918 918 919 - 920 920 For example, in **US915** band, the frequency table is as below. By default, the end node will use all channels (0~~71) for OTAA Join process. After the OTAA Join, the end node will use these all channels (0~~71) to send uplink packets. 921 921 919 +[[image:image-20220606154726-3.png]] 922 922 923 -|CHE|(% colspan="9" %)US915 Uplink Channels(125KHz,4/5,Unit:MHz,CHS=0) 924 -|0|(% colspan="9" %)ENABLE Channel 0-63 925 -|1|902.3|902.5|902.7|902.9|903.1|903.3|903.5|903.7|Channel 0-7 926 -|2|903.9|904.1|904.3|904.5|904.7|904.9|905.1|905.3|Channel 8-15 927 -|3|905.5|905.7|905.9|906.1|906.3|906.5|906.7|906.9|Channel 16-23 928 -|4|907.1|907.3|907.5|907.7|907.9|908.1|908.3|908.5|Channel 24-31 929 -|5|908.7|908.9|909.1|909.3|909.5|909.7|909.9|910.1|Channel 32-39 930 -|6|910.3|910.5|910.7|910.9|911.1|911.3|911.5|911.7|Channel 40-47 931 -|7|911.9|912.1|912.3|912.5|912.7|912.9|913.1|913.3|Channel 48-55 932 -|8|913.5|913.7|913.9|914.1|914.3|914.5|914.7|914.9|Channel 56-63 933 -|(% colspan="10" %)Channels(500KHz,4/5,Unit:MHz,CHS=0) 934 -| |903|904.6|906.2|907.8|909.4|911|912.6|914.2|Channel 64-71 935 - 936 936 When you use the TTN network, the US915 frequency bands use are: 937 937 938 938 * 903.9 - SF7BW125 to SF10BW125 ... ... @@ -945,11 +945,18 @@ 945 945 * 905.3 - SF7BW125 to SF10BW125 946 946 * 904.6 - SF8BW500 947 947 933 + 948 948 Because the end node is now hopping in 72 frequency, it makes it difficult for the devices to Join the TTN network and uplink data. To solve this issue, you can access the device via the AT commands and run: 949 949 936 +(% class="box infomessage" %) 937 +((( 950 950 **AT+CHE=2** 939 +))) 951 951 941 +(% class="box infomessage" %) 942 +((( 952 952 **ATZ** 944 +))) 953 953 954 954 to set the end node to work in 8 channel mode. The device will work in Channel 8-15 & 64-71 for OTAA, and channel 8-15 for Uplink. 955 955 ... ... @@ -956,22 +956,10 @@ 956 956 957 957 The **AU915** band is similar. Below are the AU915 Uplink Channels. 958 958 951 +[[image:image-20220606154825-4.png]] 959 959 960 -|CHE|(% colspan="9" %)AU915 Uplink Channels(125KHz,4/5,Unit:MHz,CHS=0) 961 -|0|(% colspan="9" %)ENABLE Channel 0-63 962 -|1|915.2|915.4|915.6|915.8|916|916.2|916.4|916.6|Channel 0-7 963 -|2|916.8|917|917.2|917.4|917.6|917.8|918|918.2|Channel 8-15 964 -|3|918.4|918.6|918.8|919|919.2|919.4|919.6|919.8|Channel 16-23 965 -|4|920|920.2|920.4|920.6|920.8|921|921.2|921.4|Channel 24-31 966 -|5|921.6|921.8|922|922.2|922.4|922.6|922.8|923|Channel 32-39 967 -|6|923.2|923.4|923.6|923.8|924|924.2|924.4|924.6|Channel 40-47 968 -|7|924.8|925|925.2|925.4|925.6|925.8|926|926.2|Channel 48-55 969 -|8|926.4|926.6|926.8|927|927.2|927.4|927.6|927.8|Channel 56-63 970 -|(% colspan="10" %)Channels(500KHz,4/5,Unit:MHz,CHS=0) 971 -| |915.9|917.5|919.1|920.7|922.3|923.9|925.5|927.1|Channel 64-71 972 972 973 973 974 - 975 975 = 5. Trouble Shooting = 976 976 977 977
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