Shu Wang

5 Questions 16 Answers 0 Followers

Questions related from Shu Wang

Is there any analytic result on the impact of Doppler onto CDMA signals without Doppler tracking and compensation?

In most modern CDMA, OFDM communication systems, there are means of helping their receivers to track and compensate Doppler effects, such as AGC resetting, etc. My question is, what would happen...

02 September 2016 4,222 3 View

Besides the initial authentication during UE registration, how often does a LTE network request a re-authentication on the registered UE?

Let's only consider a LTE network and there is no inter-RAT handover. I understand that a UE shall perform a initial authentication request by its serving MME during its registration. My...

13 March 2015 9,407 3 View

What is the difference between the LTE RRC_IDLE DRX before release 12 and the Extended DRX defined in Release 12 or 13?

is the relationship between the RRC_IDLE DRX and extended DRX similar to the relationship between the short DRX and long DRX in RRC_CONNECTED?

04 December 2014 837 1 View

How can a LTE UE obtain the accurate local or UTC time/date (e.g., in the accuracy of milli-seconds or better ) from the LTE network?

Is it possible for a LTE UE to obtain the accurate local or UTC time/date from the L1/L2/L3 of LTE network? I am sure that a LTE UE can obtain the local or UTC time/date from either MME or L4...

14 November 2014 3,215 5 View

In LTE, is there any limitation on the number of radio resource blocks assigned for signaling radio bearers, SRB0~SRB2, or paging messages?

Let's use 10MHz FDD LTE as an example. As we know the number of radio resource blocks (RBs) assigned for each PDSCH can be between 1~50. This is for both traffic radio bearer and signaling radio...

13 November 2014 5,311 1 View