One of the interesting debates and videos you find on YouTube are about Socialism and Capitalism.
I feel some times a lot of people presenting their viewpoint does not understand the difference between the two.
However as a layman I do know where this difference and concept can be applied in cellular network communication.
As a consumer you may want to be socialist while when it comes to earning money you may wear a capitalistic hat. Whatever the case maybe.
Before you get polarized about the subject and start calling me names.
Let’s jump right into it .
What you are thinking depends upon what is your definition of Socialism or Capitalism
In simple terms it is the amount of data being received by a connected user on average in LTE network. Mathematically, it can be defined as the number of packets received by a specific user (UE)
in a given time.
In simple terms, it is the sum of average throughput of all the users in the network. Mathematically , it is average user throughput in the cell multiplied by the number of users in the network.
In typical vendors’ equipment. UE and Cell throughput are computed mathematically from the counter(s) representing the number of packets delivered in Downlink , counter(s) indicating the
time taken to deliver these packets to the UE , counter(s) indicating scheduled activity at cell level. Similarly for Uplink. The counters can have different names for different vendors
In order to learn how to interpret cell throughput and UE throughput. Which one is a better more reliable representation of cell’s overall performance and / or experience of the users connected to
the cell. You need to specify a couple of things as follows:
In order to achieve socialism for your users , you can use :
Both scheduling strategies above will strive to give equal weight in scheduling and throughput respectively. If you want to have same user throughput for all the users. Round Robin scheduling
strategy is your best bet.
In case you want to prioritize users based on their RF coverage , channel conditions etc. But still all users should receive equal rate. Proportional fair with equal rate is your best decision as shown
in the plot below.
As you can see from the plot above. In order to maximize overall capacity of the cell , user throughput is not the best metric to look for. Specially, even if users are standing in best RF coverage ,
each user is being treated with the same weight for scheduling . Therefore, The overall capacity is still decreasing as evident on the right side of the plot.
One important point to keep in mind, it is not necessarily true that if there is high user throughput in a cell then there will be always high average cell throughput and vice versa.
There is a possibility that a cell can have high average cell throughput and very low average user throughput. Because a cell can have some users which are in excellent RF conditions while others
are in poor RF coverage.
If you use proportional fair scheduling strategy with maximum carrier to interference approach. The scheduling strategy will provide maximum throughput to these good RF users which will
increase the overall cell throughput. Whereas user throughput can still be lower in this case as evident in the plot below.
The plot for average cell throughput is presented above. Couple of observations which you can make from the plot above. Round Robin scheduling strategy can provide the same average cell
throughput for all the users. However, it is not the maximum cell throughput. Similarly proportional fair scheduling strategy with equal rate , higher fairness or the likes do not help to increase the
average cell throughput.
In conclusion, it depends on you as an optimization engineer, planner, designer or analyst what are you trying to achieve out of your cell for the connected users. If you want to treat all the
connected users the same way and all should get the same throughput go for Round-robin scheduling
( which is contradictory to most business models 🙂 and how are you going to make money 😉 if providing the same experience to all connected users , not all users’ needs are same ) .
However for Round Robin scheduling strategy, you have to pay the price for the limited throughput connected users will receive even in best RF coverage. So, in a nutshell either it is UE
throughput or Average Cell Throughput. It depends , what trade-off are you trying to achieve at the end of the day. The two graph plots above will help you get an answer.
If further questions remain. Please put it in the comments below.