From the course: 5G Architecture, Design, Protocols, Evolution, and Deployment

Simulation: PUCCH and PUSCH

From the course: 5G Architecture, Design, Protocols, Evolution, and Deployment

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Simulation: PUCCH and PUSCH

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(soothing music) - [Instructor] So similar to downlink channels and signals, let's understand and simulate the signals and channels in uplink. Let's start with the shared channel. So for PUSCH in uplink, considering the same frequency range of 2, and 100 megahertz of channel bandwidth, we are seeing in the grid here in the bottom that PUSCH, which is in the green color, are allocated across all the 13 symbols. Because we have defined the symbol length as 13, which is starting from the symbol 0 in every slot. We can change it, depending upon if you want to reduce the number of resources to be allocated for particular PUSCH. But we keep it 13 to utilize the resources at the max. We can keep it to 14 also. But here in this case, we have set some resources for the sounding reference signal in uplink, and there would be a conflict in that case, if you see here in the bottom. So we just keep it as 13 simple length, because the last one, we'll use for sounding reference signals, which will be used in uplink for channel estimation, and precisely used in case of beam forming and active antenna type systems. Similar to the signals we have seen in the downlink, we have the demodulated reference signals in the uplink also. Again, to estimate the channel that how the resources and the channel's situation is, are the good or bad? And, accordingly, the scheduling happens if the resource is to be allocated more or less depending upon the channel estimation. So here we see that Configuration Type 1 and 2 are there, so we can change them, and accordingly, at a resource element level, we'll see that with the changes in the configuration, we can see how the DMRS get changed in a PUSCH. And similar to that, we have the phase tracking reference signal in uplink. We can, again, change their location in time and frequency to domain. Similar to the common control channel, what we have seen in the downlink, we have similar kind of setup in the uplink also, but we don't have a (indistinct) kind of scenario here. We can change the start symbol, and accordingly, the length here. So it is starting with the symbol 1 and the length is 5, which includes the demodulated reference signals also. So it starts from one and ends at six. So it is basically the start symbol is 1 and symbol length is 5. We can change that. And then the last one is the sounding reference signals. Again, we are referring the particular slot or particular symbol in a slot for SR.

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