Changes for page N95S31B -- NB-IoT Temperature & Humidity Sensor User Manual
Last modified by Mengting Qiu on 2024/04/02 16:44
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... ... @@ -908,16 +908,33 @@ 908 908 When downloading the images, choose the required image file for download. 909 909 910 910 911 -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. 912 912 912 +How to set up LSE01 to work in 8 channel mode 913 913 914 +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. 915 + 916 + 914 914 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. 915 915 916 916 920 + 917 917 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. 918 918 919 -[[image:image-20220606154726-3.png]] 920 920 924 +(% border="1" cellspacing="10" style="background-color:#f7faff" %) 925 +|=(% style="width: 56px;" %)CHE|=(% colspan="9" style="width: 1433px;" %)US915 Uplink Channels(125KHz,4/5,Unit:MHz,CHS=0) 926 +|(% style="width:56px" %)0|(% colspan="9" style="width:1433px" %)ENABLE Channel 0-63 927 +|(% style="width:56px" %)1|(% style="width:63px" %)902.3|(% style="width:70px" %)902.5|(% style="width:68px" %)902.7|(% style="width:70px" %)902.9|(% style="width:464px" %)903.1|903.3|903.5|903.7|Channel 0-7 928 +|(% style="width:56px" %)2|(% style="width:63px" %)903.9|(% style="width:70px" %)904.1|(% style="width:68px" %)904.3|(% style="width:70px" %)904.5|(% style="width:464px" %)904.7|904.9|905.1|905.3|Channel 8-15 929 +|(% style="width:56px" %)3|(% style="width:63px" %)905.5|(% style="width:70px" %)905.7|(% style="width:68px" %)905.9|(% style="width:70px" %)906.1|(% style="width:464px" %)906.3|906.5|906.7|906.9|Channel 16-23 930 +|(% style="width:56px" %)4|(% style="width:63px" %)907.1|(% style="width:70px" %)907.3|(% style="width:68px" %)907.5|(% style="width:70px" %)907.7|(% style="width:464px" %)907.9|908.1|908.3|908.5|Channel 24-31 931 +|(% style="width:56px" %)5|(% style="width:63px" %)908.7|(% style="width:70px" %)908.9|(% style="width:68px" %)909.1|(% style="width:70px" %)909.3|(% style="width:464px" %)909.5|909.7|909.9|910.1|Channel 32-39 932 +|(% style="width:56px" %)6|(% style="width:63px" %)910.3|(% style="width:70px" %)910.5|(% style="width:68px" %)910.7|(% style="width:70px" %)910.9|(% style="width:464px" %)911.1|911.3|911.5|911.7|Channel 40-47 933 +|(% style="width:56px" %)7|(% style="width:63px" %)911.9|(% style="width:70px" %)912.1|(% style="width:68px" %)912.3|(% style="width:70px" %)912.5|(% style="width:464px" %)912.7|912.9|913.1|913.3|Channel 48-55 934 +|(% style="width:56px" %)8|(% style="width:63px" %)913.5|(% style="width:70px" %)913.7|(% style="width:68px" %)913.9|(% style="width:70px" %)914.1|(% style="width:464px" %)914.3|914.5|914.7|914.9|Channel 56-63 935 +|(% colspan="10" %)Channels(500KHz,4/5,Unit:MHz,CHS=0) 936 +|(% style="width:56px" %) |(% style="width:63px" %)903|(% style="width:70px" %)904.6|(% style="width:68px" %)906.2|(% style="width:70px" %)907.8|(% style="width:464px" %)909.4|911|912.6|914.2|Channel 64-71 937 + 921 921 When you use the TTN network, the US915 frequency bands use are: 922 922 923 923 * 903.9 - SF7BW125 to SF10BW125 ... ... @@ -930,18 +930,11 @@ 930 930 * 905.3 - SF7BW125 to SF10BW125 931 931 * 904.6 - SF8BW500 932 932 933 - 934 934 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: 935 935 936 -(% class="box infomessage" %) 937 -((( 938 938 **AT+CHE=2** 939 -))) 940 940 941 -(% class="box infomessage" %) 942 -((( 943 943 **ATZ** 944 -))) 945 945 946 946 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. 947 947 ... ... @@ -948,12 +948,25 @@ 948 948 949 949 The **AU915** band is similar. Below are the AU915 Uplink Channels. 950 950 951 -[[image:image-20220606154825-4.png]] 952 952 962 +|CHE|(% colspan="9" %)AU915 Uplink Channels(125KHz,4/5,Unit:MHz,CHS=0) 963 +|0|(% colspan="9" %)ENABLE Channel 0-63 964 +|1|915.2|915.4|915.6|915.8|916|916.2|916.4|916.6|Channel 0-7 965 +|2|916.8|917|917.2|917.4|917.6|917.8|918|918.2|Channel 8-15 966 +|3|918.4|918.6|918.8|919|919.2|919.4|919.6|919.8|Channel 16-23 967 +|4|920|920.2|920.4|920.6|920.8|921|921.2|921.4|Channel 24-31 968 +|5|921.6|921.8|922|922.2|922.4|922.6|922.8|923|Channel 32-39 969 +|6|923.2|923.4|923.6|923.8|924|924.2|924.4|924.6|Channel 40-47 970 +|7|924.8|925|925.2|925.4|925.6|925.8|926|926.2|Channel 48-55 971 +|8|926.4|926.6|926.8|927|927.2|927.4|927.6|927.8|Channel 56-63 972 +|(% colspan="10" %)Channels(500KHz,4/5,Unit:MHz,CHS=0) 973 +| |915.9|917.5|919.1|920.7|922.3|923.9|925.5|927.1|Channel 64-71 953 953 954 954 976 + 955 955 = 5. Trouble Shooting = 956 956 979 + 957 957 == 5.1 Why I can’t join TTN in US915 / AU915 bands? == 958 958 959 959 It is due to channel mapping. Please see the [[Eight Channel Mode>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]] section above for details.
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