Hi Chun Huai Du, > I think that is a packed based transmitting. The semantic differentiation between frame and packet is not very sharp, especially between computer scientists and radio communication engineers, so I think you're right! > is there any method to get the transmitting timestamp of USRP sink? Setting it. There's no later method of getting that, as far as I know.
> to make the stream continuous and i can get the valid timestamp. I think you're on to something good :) You set the time of the first sample you transmit, you can deduct the later samples' times simply by (sample count)/(sampling rate) if you continously send samples. You can set the time where the first sample is sent using the usrp_sink's "set_start_time" method. > but if my flow is not continuous... Then, you should specify the timestamp for each packet. Best regards, Marcus On 07/10/2015 07:53 PM, ChunHuai Fu wrote: > hi, > > I want to transmit a frame from a USRP to another USRP. > > I think that is a packed based transmitting. > > is there any method to get the transmitting timestamp of USRP sink? > > I check the usrp_sink_impl.cc. > > there is the "_metadata.time_spec", it will update by the num_sent and > the samp_rate. > > but if my flow is not continuous... > > so that the time is invalid... due to the time not keep updating. > > or is there any method about making the frame along with a continuous > stream? > > to make the stream continuous and i can get the valid timestamp. > > Thank you so much!! > _______________________________________________ Discuss-gnuradio mailing list [email protected] https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
