Skip to Content

Changes for page LoRaWAN Capacity

Last modified by Xiaoling on 2023/04/14 11:38
From version 2.2
edited by Xiaoling
on 2022/07/13 11:12
Change comment: There is no comment for this version
To version 4.2
edited by Xiaoling
on 2022/07/13 11:19
Change comment: There is no comment for this version

Summary

Details

Page properties
Content
... ... @@ -1,7 +1,11 @@
1 -{{box cssClass="floatinginfobox" title="**Contents**"}}
1 +
2 +
3 +**Table of Contents:**
4 +
2 2  {{toc/}}
3 -{{/box}}
4 4  
7 +
8 +
5 5  = 1.  For LoRaWAN Network =
6 6  
7 7  
... ... @@ -10,14 +10,15 @@
10 10  
11 11  LoRa transmission is a broadcast protocol. There is no fix connection between gateway and end node.
12 12  
13 -For uplink steam: Each End node will broadcast the uplink message and all-around gateways will get this message and forward to LoRaWAN Server.
17 +(% style="color:blue" %)**For uplink steam: **(%%) Each End node will broadcast the uplink message and all-around gateways will get this message and forward to LoRaWAN Server.
14 14  
15 -For Downlink Stream: Gateway will get instruction from LoRaWAN server and then broadcast this message to LoRaWAN End Node.
19 +(% style="color:blue" %)**For Downlink Stream:**(%%)  Gateway will get instruction from LoRaWAN server and then broadcast this message to LoRaWAN End Node.
16 16  
17 17  
18 18  
19 19  == 1.2  Traffic for a single End Node. ==
20 20  
25 +
21 21  If we consider using LHT65N as an example to calculate the traffic, we can get a rough idea for how many messages are there:
22 22  
23 23  * Uplink Traffic:
... ... @@ -36,7 +36,7 @@
36 36  
37 37  A general LoRaWAN gateway such as LPS8N uses a multi-channel LoRaWAN Concentrator. which supports 10 rx channels and 1 tx channel.
38 38  
39 -* RX channel is used to received Uplink from Sensor. User can pre-set max 10 different frequencies on rx. For example, in EU868, 8 channels are use, they are as below:
44 +* **RX channel** is used to received Uplink from Sensor. User can pre-set max 10 different frequencies on rx. For example, in EU868, 8 channels are use, they are as below:
40 40  ** 868.1 - SF7BW125 to SF12BW125
41 41  ** 868.3 - SF7BW125 to SF12BW125 and SF7BW250
42 42  ** 868.5 - SF7BW125 to SF12BW125
... ... @@ -47,11 +47,9 @@
47 47  ** 867.9 - SF7BW125 to SF12BW125
48 48  ** 868.8 - FSK
49 49  
50 -
51 -
52 52  When two sensors send uplink in different frequencies, for example, 868.1 nad 868.3. both packets can arrive at the gateway, and the gateway will forward to LoRaWAN Server. Normally, we can consider the gateway support 8 packets per second ( The packets are of different frequencies).
53 53  
54 -* TX channel frequency is flexible and defined by each downstream from LoRaWAN Server. Please notice when the gateway is in TX mode, RX won't be able to receive packets. So If there are too many downstream in the network. RX capacity will be highly effected.
57 +* **TX channel frequency** is flexible and defined by each downstream from LoRaWAN Server. Please notice when the gateway is in TX mode, RX won't be able to receive packets. So If there are too many downstream in the network. RX capacity will be highly effected.
55 55  
56 56  
57 57