Why readings for WiFi link speed and bandwidth don't correlate?
I want to get the "speed" for my WiFi connection.
From NetworkCapabilities class, I get:
Link downstream bandwidth: 1048576 Kbps
Link upstream bandwidth: 1048576 Kbps
However, using WiFiInfo class I get:
Link speed: 200000 Kbps
Why values are different?
From my research, I concluded, that NetworkCapabilities class doesn't actually MEASURE bandwidth - it just returns EXPECTED values for detected technology (WiFi, cellular, etc.). I guess, that WiFiInfo does the same thing. I ran the code many times during extended period of time and got the same values you see above.
Code
Here is the code with NetworkCapabilities:
val connectivityManager = context.getSystemService(ConnectivityManager::class.java)
val networkCapabilities: NetworkCapabilities?
get() = connectivityManager.getNetworkCapabilities(connectivityManager.activeNetwork)
networkCapabilities?.linkDownstreamBandwidthKbps // 1048576
networkCapabilities?.linkUpstreamBandwidthKbps // 1048576
Here is the code with WiFiInfo:
val wifiManager = context.getSystemService(WifiManager::class.java)
wifiManager.connectionInfo.linkSpeed // returns 200 Mbps
android networking kotlin wifi android-wifi asked Nov 21 '18 at 9:49
SevastyanSevastyan
2,7362920
add a comment |
I want to get the "speed" for my WiFi connection.
From NetworkCapabilities class, I get:
Link downstream bandwidth: 1048576 Kbps
Link upstream bandwidth: 1048576 Kbps
However, using WiFiInfo class I get:
Link speed: 200000 Kbps
Why values are different?
From my research, I concluded, that NetworkCapabilities class doesn't actually MEASURE bandwidth - it just returns EXPECTED values for detected technology (WiFi, cellular, etc.). I guess, that WiFiInfo does the same thing. I ran the code many times during extended period of time and got the same values you see above.
Code
Here is the code with NetworkCapabilities:
val connectivityManager = context.getSystemService(ConnectivityManager::class.java)
val networkCapabilities: NetworkCapabilities?
get() = connectivityManager.getNetworkCapabilities(connectivityManager.activeNetwork)
networkCapabilities?.linkDownstreamBandwidthKbps // 1048576
networkCapabilities?.linkUpstreamBandwidthKbps // 1048576
Here is the code with WiFiInfo:
val wifiManager = context.getSystemService(WifiManager::class.java)
wifiManager.connectionInfo.linkSpeed // returns 200 Mbps
asked Nov 21 '18 at 9:49
SevastyanSevastyan
2,7362920
probablyNetworkCapabilitieswill return you the max link speed available for your device and connection type
– Vladyslav Matviienko
Nov 21 '18 at 10:34
So you are saying that there is a different link available except WiFi on my device that is faster than WiFi? I've checked available link types (NetworkCapabilities.hasTransport(Int)) and the onlytrueI got was forNetworkCapabilities.TRANSPORT_WIFI. Am I doing it right? Why google guys even call it "transport"? I think it should be "link" (as in OSI model).
– Sevastyan
Nov 21 '18 at 11:14
1
WIFI of type AC is probably able to link to 1GBPS. Anyway that is just my guess
– Vladyslav Matviienko
Nov 21 '18 at 12:13
That's probably the case. Thanks for giving a lead on this.
– Sevastyan
Nov 21 '18 at 13:05
add a comment |
I want to get the "speed" for my WiFi connection.
From NetworkCapabilities class, I get:
Link downstream bandwidth: 1048576 Kbps
Link upstream bandwidth: 1048576 Kbps
However, using WiFiInfo class I get:
Link speed: 200000 Kbps
Why values are different?
From my research, I concluded, that NetworkCapabilities class doesn't actually MEASURE bandwidth - it just returns EXPECTED values for detected technology (WiFi, cellular, etc.). I guess, that WiFiInfo does the same thing. I ran the code many times during extended period of time and got the same values you see above.
Code
Here is the code with NetworkCapabilities:
val connectivityManager = context.getSystemService(ConnectivityManager::class.java)
val networkCapabilities: NetworkCapabilities?
get() = connectivityManager.getNetworkCapabilities(connectivityManager.activeNetwork)
networkCapabilities?.linkDownstreamBandwidthKbps // 1048576
networkCapabilities?.linkUpstreamBandwidthKbps // 1048576
Here is the code with WiFiInfo:
val wifiManager = context.getSystemService(WifiManager::class.java)
wifiManager.connectionInfo.linkSpeed // returns 200 Mbps
asked Nov 21 '18 at 9:49
SevastyanSevastyan
2,7362920
I want to get the "speed" for my WiFi connection.
From NetworkCapabilities class, I get:
Link downstream bandwidth: 1048576 Kbps
Link upstream bandwidth: 1048576 Kbps
However, using WiFiInfo class I get:
Link speed: 200000 Kbps
Why values are different?
From my research, I concluded, that NetworkCapabilities class doesn't actually MEASURE bandwidth - it just returns EXPECTED values for detected technology (WiFi, cellular, etc.). I guess, that WiFiInfo does the same thing. I ran the code many times during extended period of time and got the same values you see above.
Code
Here is the code with NetworkCapabilities:
val connectivityManager = context.getSystemService(ConnectivityManager::class.java)
val networkCapabilities: NetworkCapabilities?
get() = connectivityManager.getNetworkCapabilities(connectivityManager.activeNetwork)
networkCapabilities?.linkDownstreamBandwidthKbps // 1048576
networkCapabilities?.linkUpstreamBandwidthKbps // 1048576
Here is the code with WiFiInfo:
val wifiManager = context.getSystemService(WifiManager::class.java)
wifiManager.connectionInfo.linkSpeed // returns 200 Mbps
asked Nov 21 '18 at 9:49
SevastyanSevastyan
2,7362920
asked Nov 21 '18 at 9:49
SevastyanSevastyan
2,7362920
asked Nov 21 '18 at 9:49
SevastyanSevastyan
2,7362920
asked Nov 21 '18 at 9:49
SevastyanSevastyan
2,7362920
asked Nov 21 '18 at 9:49
SevastyanSevastyan
2,7362920
2,7362920
probablyNetworkCapabilitieswill return you the max link speed available for your device and connection type
– Vladyslav Matviienko
Nov 21 '18 at 10:34
So you are saying that there is a different link available except WiFi on my device that is faster than WiFi? I've checked available link types (NetworkCapabilities.hasTransport(Int)) and the onlytrueI got was forNetworkCapabilities.TRANSPORT_WIFI. Am I doing it right? Why google guys even call it "transport"? I think it should be "link" (as in OSI model).
– Sevastyan
Nov 21 '18 at 11:14
1
WIFI of type AC is probably able to link to 1GBPS. Anyway that is just my guess
– Vladyslav Matviienko
Nov 21 '18 at 12:13
That's probably the case. Thanks for giving a lead on this.
– Sevastyan
Nov 21 '18 at 13:05
add a comment |
probablyNetworkCapabilitieswill return you the max link speed available for your device and connection type
– Vladyslav Matviienko
Nov 21 '18 at 10:34
So you are saying that there is a different link available except WiFi on my device that is faster than WiFi? I've checked available link types (NetworkCapabilities.hasTransport(Int)) and the onlytrueI got was forNetworkCapabilities.TRANSPORT_WIFI. Am I doing it right? Why google guys even call it "transport"? I think it should be "link" (as in OSI model).
– Sevastyan
Nov 21 '18 at 11:14
1
WIFI of type AC is probably able to link to 1GBPS. Anyway that is just my guess
– Vladyslav Matviienko
Nov 21 '18 at 12:13
That's probably the case. Thanks for giving a lead on this.
– Sevastyan
Nov 21 '18 at 13:05
probably
NetworkCapabilities will return you the max link speed available for your device and connection type– Vladyslav Matviienko
Nov 21 '18 at 10:34
probably
NetworkCapabilities will return you the max link speed available for your device and connection type– Vladyslav Matviienko
Nov 21 '18 at 10:34
So you are saying that there is a different link available except WiFi on my device that is faster than WiFi? I've checked available link types (
NetworkCapabilities.hasTransport(Int)) and the only true I got was for NetworkCapabilities.TRANSPORT_WIFI. Am I doing it right? Why google guys even call it "transport"? I think it should be "link" (as in OSI model).– Sevastyan
Nov 21 '18 at 11:14
So you are saying that there is a different link available except WiFi on my device that is faster than WiFi? I've checked available link types (
NetworkCapabilities.hasTransport(Int)) and the only true I got was for NetworkCapabilities.TRANSPORT_WIFI. Am I doing it right? Why google guys even call it "transport"? I think it should be "link" (as in OSI model).– Sevastyan
Nov 21 '18 at 11:14
1
1
WIFI of type AC is probably able to link to 1GBPS. Anyway that is just my guess
– Vladyslav Matviienko
Nov 21 '18 at 12:13
WIFI of type AC is probably able to link to 1GBPS. Anyway that is just my guess
– Vladyslav Matviienko
Nov 21 '18 at 12:13
That's probably the case. Thanks for giving a lead on this.
– Sevastyan
Nov 21 '18 at 13:05
That's probably the case. Thanks for giving a lead on this.
– Sevastyan
Nov 21 '18 at 13:05
add a comment |
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probably
NetworkCapabilitieswill return you the max link speed available for your device and connection type– Vladyslav Matviienko
Nov 21 '18 at 10:34
So you are saying that there is a different link available except WiFi on my device that is faster than WiFi? I've checked available link types (
NetworkCapabilities.hasTransport(Int)) and the onlytrueI got was forNetworkCapabilities.TRANSPORT_WIFI. Am I doing it right? Why google guys even call it "transport"? I think it should be "link" (as in OSI model).– Sevastyan
Nov 21 '18 at 11:14
1
WIFI of type AC is probably able to link to 1GBPS. Anyway that is just my guess
– Vladyslav Matviienko
Nov 21 '18 at 12:13
That's probably the case. Thanks for giving a lead on this.
– Sevastyan
Nov 21 '18 at 13:05