what does ideal control message mean in LTE module?

[zhao yang]

I see in the documentation that  control messages are ideal which do not consume radio resources. However, it seems that in the code it transmits control message throughout the whole bandwidth within a time duration of 3 OFDM symbol. So what does it mean?

[Marco Miozzo]

Hi,

if you refer to RA preamble (i.e., where I find that sentence), it means that RA is sent as a control message in uplink control channel (PUCCH). PUCCH has been modeled as an ideal error free channel which do not use any radio resource.

The 3 OFDM symbols are used to model the downlink control channel (PDDCH).

Best,

marco.
 

On Wed, Sep 28, 2016 at 3:21 PM, zhao yang <plyang...@gmail.com> wrote:

I see in the documentation that  control messages are ideal which do not consume radio resources. However, it seems that in the code it transmits control message throughout the whole bandwidth within a time duration of 3 OFDM symbol. So what does it mean?

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[zhao yang]

Got it, thanks. 

在 2016年9月29日星期四 UTC+8下午5:29:17，Marco写道：

Hi,

if you refer to RA preamble (i.e., where I find that sentence), it means that RA is sent as a control message in uplink control channel (PUCCH). PUCCH has been modeled as an ideal error free channel which do not use any radio resource.

The 3 OFDM symbols are used to model the downlink control channel (PDDCH).

Best,

marco.
 

On Wed, Sep 28, 2016 at 3:21 PM, zhao yang <plyang...@gmail.com> wrote:

I see in the documentation that  control messages are ideal which do not consume radio resources. However, it seems that in the code it transmits control message throughout the whole bandwidth within a time duration of 3 OFDM symbol. So what does it mean?

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Posting to this group should follow these guidelines https://www.nsnam.org/wiki/Ns-3-users-guidelines-for-posting
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