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Member
Reputation: 50
What a Latency ?
When reading some documents, I find that among the improvements made by LTE is its " Low Latency " (10-20 ms).
could you explain what a Latency ?
many thks
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2011-11-01 08:09 PM
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Member
Reputation: 142
Re: What a Latency ?
Im not LTE expert but i think it's similar to latency in other technology
it means the time needed for one packet to go forth and back again like RTT
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VIP Member
Reputation: 1118
Re: What a Latency ?
what kind of KPI on data performance?
1. Latency
2. Jitter
3. Delay
anything else? for any documents please welcome
If this document usefull, then giving some
reputations is highly appreciated.
note : see default password
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Senior Member
Reputation: 591
Re: What a Latency ?
Originally Posted by
fahmi
When reading some documents, I find that among the improvements made by LTE is its " Low Latency " (10-20 ms).
could you explain what a Latency ?
many thks
LTE reduces latency in several ways:
1. Omission of RNC and aggregating its functionality in Node B, thereby reducing the amount of protocol layers
2. The Tramsission Time Interval in LTE is 1 ms as supposed to HSPA which is 2ms and R99 WCDMA which could be either 10/20/40/80 ms.
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Re: What a Latency ?
As explained in all above posts, in simple words it means;
time taken by a packet (data) to go from point A to point B and back to point A.
Latency plays an important part in customer's perception of the service, hence network operators strive to have as minimum latency as possible.
LTE has reduced round trip delay (latency) to the minimum.
Hope this helps.
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Member
Reputation: 141
Re: What a Latency ?
...and UMTS reduce it by SRB over HSPA..
User Plane Latency, is the delay seen by an application in exchanging data with a server. fe: PING delay the delay from a UE sending a small PING to the first IP node in the network and receiving the PING response.
Control plane latency, is the call setup latencyfor a User Equipment (UE) to transition to a state where it can send/receive data.
Originally Posted by
fon909
As explained in all above posts, in simple words it means;
time taken by a packet (data) to go from point A to point B and back to point A.
Latency plays an important part in customer's perception of the service, hence network operators strive to have as minimum latency as possible.
LTE has reduced round trip delay (latency) to the minimum.
Hope this helps.
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