CA doubt

[plannerguy]

Hi

My doubt may sound silly, pls bare with me.

In network there are two bands . i.e Band 3 and Band 41 , when CA is enabled UE will getting data streams from both band. So how does UE listens to two different frequency at same moment. UE which is now available in market is having 2 Port(Tx/RX).

Rgds
Plannerguy

[slava121]

Is it about LTE?
Aggregation of carrier bands 3 FDD and 42TDD?


Hi

My doubt may sound silly, pls bare with me.

In network there are two bands . i.e Band 3 and Band 41 , when CA is enabled UE will getting data streams from both band. So how does UE listens to two different frequency at same moment. UE which is now available in market is having 2 Port(Tx/RX).

Rgds
Plannerguy

[Nyquist]

Hi.
There are several modes for CA supported by 3GPP, with one or two PA's and receivers.
Please, have a look to the attached paper (page 41).
Hope it helps

[Nyquist]

@plannerguy

Here you have a good book in case you require a deeper knowledge in terminal design

https://libgen.pw/download/book/5a1f059d3a044650f5131beb

Goog reading

[plannerguy]

Hi

Thanks will go through doc.

Will be helpful if there is crisp answer.

Rgds
Plannerguy

[auto_art]

Measurement gaps are there to let UE listens to other freq. defined in SIB
if you have two bands already configured in PC, SC why is a need to scan other?

[khurrambilal01]

Hi

My doubt may sound silly, pls bare with me.

In network there are two bands . i.e Band 3 and Band 41 , when CA is enabled UE will getting data streams from both band. So how does UE listens to two different frequency at same moment. UE which is now available in market is having 2 Port(Tx/RX).

Rgds
Plannerguy

UE measures the CQI for both the frequency bands while measurement starts for CA configuration: UE reports RSRP only for other layer once lets say on band 3, If better than configured threshold then UE configures CA but CA activation is only done once there is some data to be sent which can't be finished by first carrier only. During CA active mode UE reports CQI, PMI , RI for both layers to primary cell only. It's just like measurement gap you can measure other frequencies too.

[slava121]

@Nyquist (http://www.finetopix.com/member.php/54227-Nyquist)
This download link:
https://libgen.pw/download/book/5a1f059d3a044650f5131beb -
not working



@plannerguy

Here you have a good book in case you require a deeper knowledge in terminal design

https://libgen.pw/download/book/5a1f059d3a044650f5131beb

Goog reading

[Nyquist]

@Nyquist (http://www.finetopix.com/member.php/54227-Nyquist)
This download link:
https://libgen.pw/download/book/5a1f059d3a044650f5131beb -
not working


Hi.
I have just checked it and work fine.

[Nyquist]

Hi.
It seems that some addresses cannot be acceded from some countries.
Sorry for that. Try this new one

http://download.library1.org/main/1607000/b27397fa36d5110b389e876434039d92/Das%2C%20Sajal%20Kumar-Mobile%20terminal%20receiver%20design%20_%20LTE%20and%20LTE-advanced-John%20Wiley%20%26%20Sons%20%282016%29.pdf

[slava121]

Now it turned out to download http://download.library1.org/main/16...%282016%29.pdf.



Hi.
It seems that some addresses cannot be acceded from some countries.
Sorry for that. Try this new one

http://download.library1.org/main/1607000/b27397fa36d5110b389e876434039d92/Das%2C%20Sajal%20Kumar-Mobile%20terminal%20receiver%20design%20_%20LTE%20and%20LTE-advanced-John%20Wiley%20%26%20Sons%20%282016%29.pdf

[plannerguy]

Hi

Thanks a lot , got the point...

Rgds
Plannerguy

[plannerguy]

UE measures the CQI for both the frequency bands while measurement starts for CA configuration: UE reports RSRP only for other layer once lets say on band 3, If better than configured threshold then UE configures CA but CA activation is only done once there is some data to be sent which can't be finished by first carrier only. During CA active mode UE reports CQI, PMI , RI for both layers to primary cell only. It's just like measurement gap you can measure other frequencies too.

Hi

thanks a lot understood.so its similar to UMTS where it moves to "compress mode" for measuring other frequency.

Rgds
Plannerguy