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IT class - April 15th [Co...

IT class - April 15th [Community Learning Week •Phase 13] Activity

END Latest reply: Apr 16, 2022 13:07:23 756 100 47 0 2
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【Answer】1.A  2. B  3.ABD  4.C  5.ABCD


【HiCoins Winner】4TEch, Abdussamed, slisli

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Hello, everyone!

Join the Community Learning week IT class! 

IT Class

IT class learning time of this phase: April 11th - April 16th.

Answer time of this class: April 15th, 8 AM - April 16th, 4 PM (UTC+0).


Class topic

1. HCIA-LTE 丨06 LTE Frame Structure

The duration of each frame is 10 ms and includes 20 timeslots, where the duration of each timeslot is 0.5 ms. A subframe consists of two adjacent timeslots, and the duration is 1 ms....(More)


2. HCIA-LTE 丨07 LTE physical channel

Both GSM and UMTS defined various channel categories, and the terminology of channels for LTE is closer to UMTS. Broadly there are four categories of channels, which are logical channels, transport channels, physical channels, and radio channels.....(More)


3. HCIA-LTE 丨08 LTE Uplink reference signal and downlink reference signal

The uplink RS is used for synchronization and uplink channel estimation between the E-UTRAN and the UE.....(More)


4. HCIA-LTE 丨09 LTE Cell Search and Downlink Synchronization

According to the LTE protocol, a cell ID at the physical layer is divided into two parts: cell group ID and intra-group ID. According to the latest protocol, there are 168 cell groups at the physical layer, and each cell group consists of three IDs. Therefore, there are 504 independent cell IDs (168 x 3)....(More)


5. HCIA-LTE 丨10 LTE Random Access

Random access is a mandatory process of establishing a radio link between the UE and the network. Data interoperation between the eNodeB and the UE can be performed normally only after the random access is complete....(More)


Click to learn:  > > >  previous class – Intelligent Video Surveillance

    *1. RE is the minimum granularity of physical layer resources. (Single choice)

  • A. Ture
  • B. False

    *2. Which of the following channels is responsible for random access response to uplink transmission scheduling information? (Single choice)

  • A. PDSCH
  • B. PDCCH
  • C. PHICH
  • D. PRACH

    *3. Which of the following are features of downlink reference signals? (Multiple choices)

  • A. LTE reference signals are discretely distributed, while CDMA/UMTS pilot signals are continuous.
  • B. REs occupied by reference signals must be left blank on the same REs of other antenna ports.
  • C. SRSs are transmitted in the last symbol of each subframe. The period and bandwidth are configurable.
  • D. For each antenna port, the frequency domain spacing of the RS is six subcarriers.

    *4. How many physical cell IDs exist in the LTE system? (Single choice)

  • A. 3
  • B. 503
  • C. 504
  • D. 512

    *5. Which of the following are random access procedures? (Multiple choices)

  • A. The higher layer requests to send a random access preamble, and then triggers a physical random access procedure.
  • B. The higher layer indicates, in the request, a preamble index, a preamble target receive power, a related RA-RNTI, and a resource status of a random access channel.
  • C. The UE determines that the transmit power of the random access channel is the target receive power of the preamble plus the path loss. The transmit power does not exceed the maximum transmit power of the UE, and the path loss is the value estimated by the UE through the downlink.
  • D. The UE calculates the transmit power and uses the selected preamble sequence to transmit a single preamble in a specified random access channel resource.

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(0) (0)
2#
taha_29four
Created 6 days ago

1. RE is the minimum granularity of physical layer resources.(Single choice)

A. Ture

2. Which of the following channels is responsible for random access response to uplink transmission scheduling information?(Single choice)

B. PDCCH

3. Which of the following are features of downlink reference signals?

A. LTE reference signals are discretely distributed, while CDMA/UMTS pilot signals are continuous.
B. REs occupied by reference signals must be left blank on the same REs of other antenna ports.
D. For each antenna port, the frequency domain spacing of the RS is six subcarriers.

4. How many physical cell IDs exist in the LTE system?(Single choice)

C. 504

5. Which of the following are random access procedures?

A. The higher layer requests to send a random access preamble, and then triggers a physical random access procedure.
B. The higher layer indicates, in the request, a preamble index, a preamble target receive power, a related RA-RNTI, and a resource status of a random access channel.
C. The UE determines that the transmit power of the random access channel is the target receive power of the preamble plus the path loss. The transmit power does not exceed the maximum transmit power of the UE, and the path loss is the value estimated by the UE through the downlink.
D. The UE calculates the transmit power and uses the selected preamble sequence to transmit a single preamble in a specified random access channel resource.
View more
  • x
  • convention：
(0) (0)
3#
faysalji
Moderator Author Created 6 days ago

1. RE is the minimum granularity of physical layer resources.(Single choice)

A. Ture

2. Which of the following channels is responsible for random access response to uplink transmission scheduling information?(Single choice)

B. PDCCH

3. Which of the following are features of downlink reference signals?

A. LTE reference signals are discretely distributed, while CDMA/UMTS pilot signals are continuous.
B. REs occupied by reference signals must be left blank on the same REs of other antenna ports.
D. For each antenna port, the frequency domain spacing of the RS is six subcarriers.

4. How many physical cell IDs exist in the LTE system?(Single choice)

C. 504

5. Which of the following are random access procedures?

A. The higher layer requests to send a random access preamble, and then triggers a physical random access procedure.
B. The higher layer indicates, in the request, a preamble index, a preamble target receive power, a related RA-RNTI, and a resource status of a random access channel.
C. The UE determines that the transmit power of the random access channel is the target receive power of the preamble plus the path loss. The transmit power does not exceed the maximum transmit power of the UE, and the path loss is the value estimated by the UE through the downlink.
D. The UE calculates the transmit power and uses the selected preamble sequence to transmit a single preamble in a specified random access channel resource.
View more
  • x
  • convention：
(0) (0)
4#
SamB
Created 6 days ago

1. RE is the minimum granularity of physical layer resources.(Single choice)

A. Ture

2. Which of the following channels is responsible for random access response to uplink transmission scheduling information?(Single choice)

B. PDCCH

3. Which of the following are features of downlink reference signals?

A. LTE reference signals are discretely distributed, while CDMA/UMTS pilot signals are continuous.
B. REs occupied by reference signals must be left blank on the same REs of other antenna ports.
D. For each antenna port, the frequency domain spacing of the RS is six subcarriers.

4. How many physical cell IDs exist in the LTE system?(Single choice)

C. 504

5. Which of the following are random access procedures?

A. The higher layer requests to send a random access preamble, and then triggers a physical random access procedure.
B. The higher layer indicates, in the request, a preamble index, a preamble target receive power, a related RA-RNTI, and a resource status of a random access channel.
C. The UE determines that the transmit power of the random access channel is the target receive power of the preamble plus the path loss. The transmit power does not exceed the maximum transmit power of the UE, and the path loss is the value estimated by the UE through the downlink.
D. The UE calculates the transmit power and uses the selected preamble sequence to transmit a single preamble in a specified random access channel resource.
View more
  • x
  • convention：
(0) (0)
5#
wissal
MVE Created 6 days ago

1. RE is the minimum granularity of physical layer resources.(Single choice)

A. Ture

2. Which of the following channels is responsible for random access response to uplink transmission scheduling information?(Single choice)

B. PDCCH

3. Which of the following are features of downlink reference signals?

A. LTE reference signals are discretely distributed, while CDMA/UMTS pilot signals are continuous.
B. REs occupied by reference signals must be left blank on the same REs of other antenna ports.
D. For each antenna port, the frequency domain spacing of the RS is six subcarriers.

4. How many physical cell IDs exist in the LTE system?(Single choice)

C. 504

5. Which of the following are random access procedures?

A. The higher layer requests to send a random access preamble, and then triggers a physical random access procedure.
B. The higher layer indicates, in the request, a preamble index, a preamble target receive power, a related RA-RNTI, and a resource status of a random access channel.
C. The UE determines that the transmit power of the random access channel is the target receive power of the preamble plus the path loss. The transmit power does not exceed the maximum transmit power of the UE, and the path loss is the value estimated by the UE through the downlink.
D. The UE calculates the transmit power and uses the selected preamble sequence to transmit a single preamble in a specified random access channel resource.
View more
  • x
  • convention：
(0) (0)
6#
Abdussamed
Created 6 days ago

1. RE is the minimum granularity of physical layer resources.(Single choice)

A. Ture

2. Which of the following channels is responsible for random access response to uplink transmission scheduling information?(Single choice)

B. PDCCH

3. Which of the following are features of downlink reference signals?

A. LTE reference signals are discretely distributed, while CDMA/UMTS pilot signals are continuous.
B. REs occupied by reference signals must be left blank on the same REs of other antenna ports.
D. For each antenna port, the frequency domain spacing of the RS is six subcarriers.

4. How many physical cell IDs exist in the LTE system?(Single choice)

C. 504

5. Which of the following are random access procedures?

A. The higher layer requests to send a random access preamble, and then triggers a physical random access procedure.
B. The higher layer indicates, in the request, a preamble index, a preamble target receive power, a related RA-RNTI, and a resource status of a random access channel.
C. The UE determines that the transmit power of the random access channel is the target receive power of the preamble plus the path loss. The transmit power does not exceed the maximum transmit power of the UE, and the path loss is the value estimated by the UE through the downlink.
D. The UE calculates the transmit power and uses the selected preamble sequence to transmit a single preamble in a specified random access channel resource.
View more
  • x
  • convention：
(0) (0)
7#
user_4332385
Created 6 days ago

1. RE is the minimum granularity of physical layer resources.(Single choice)

A. Ture

2. Which of the following channels is responsible for random access response to uplink transmission scheduling information?(Single choice)

B. PDCCH

3. Which of the following are features of downlink reference signals?

A. LTE reference signals are discretely distributed, while CDMA/UMTS pilot signals are continuous.
B. REs occupied by reference signals must be left blank on the same REs of other antenna ports.
D. For each antenna port, the frequency domain spacing of the RS is six subcarriers.

4. How many physical cell IDs exist in the LTE system?(Single choice)

C. 504

5. Which of the following are random access procedures?

A. The higher layer requests to send a random access preamble, and then triggers a physical random access procedure.
B. The higher layer indicates, in the request, a preamble index, a preamble target receive power, a related RA-RNTI, and a resource status of a random access channel.
C. The UE determines that the transmit power of the random access channel is the target receive power of the preamble plus the path loss. The transmit power does not exceed the maximum transmit power of the UE, and the path loss is the value estimated by the UE through the downlink.
D. The UE calculates the transmit power and uses the selected preamble sequence to transmit a single preamble in a specified random access channel resource.
View more
  • x
  • convention：
(0) (0)
8#
Al_Sealand
Created 6 days ago

1. RE is the minimum granularity of physical layer resources.(Single choice)

B. False

2. Which of the following channels is responsible for random access response to uplink transmission scheduling information?(Single choice)

C. PHICH

3. Which of the following are features of downlink reference signals?

B. REs occupied by reference signals must be left blank on the same REs of other antenna ports.
C. SRSs are transmitted in the last symbol of each subframe. The period and bandwidth are configurable.
D. For each antenna port, the frequency domain spacing of the RS is six subcarriers.

4. How many physical cell IDs exist in the LTE system?(Single choice)

D. 512

5. Which of the following are random access procedures?

A. The higher layer requests to send a random access preamble, and then triggers a physical random access procedure.
B. The higher layer indicates, in the request, a preamble index, a preamble target receive power, a related RA-RNTI, and a resource status of a random access channel.
C. The UE determines that the transmit power of the random access channel is the target receive power of the preamble plus the path loss. The transmit power does not exceed the maximum transmit power of the UE, and the path loss is the value estimated by the UE through the downlink.
View more
  • x
  • convention：
(0) (0)
9#
Hide_on_bush
Created 6 days ago

1. RE is the minimum granularity of physical layer resources.(Single choice)

A. Ture

2. Which of the following channels is responsible for random access response to uplink transmission scheduling information?(Single choice)

B. PDCCH

3. Which of the following are features of downlink reference signals?

A. LTE reference signals are discretely distributed, while CDMA/UMTS pilot signals are continuous.
B. REs occupied by reference signals must be left blank on the same REs of other antenna ports.
C. SRSs are transmitted in the last symbol of each subframe. The period and bandwidth are configurable.
D. For each antenna port, the frequency domain spacing of the RS is six subcarriers.

4. How many physical cell IDs exist in the LTE system?(Single choice)

C. 504

5. Which of the following are random access procedures?

B. The higher layer indicates, in the request, a preamble index, a preamble target receive power, a related RA-RNTI, and a resource status of a random access channel.
C. The UE determines that the transmit power of the random access channel is the target receive power of the preamble plus the path loss. The transmit power does not exceed the maximum transmit power of the UE, and the path loss is the value estimated by the UE through the downlink.
D. The UE calculates the transmit power and uses the selected preamble sequence to transmit a single preamble in a specified random access channel resource.
View more
  • x
  • convention：
(0) (0)
10#
page2me
Created 6 days ago

1. RE is the minimum granularity of physical layer resources.(Single choice)

A. Ture

2. Which of the following channels is responsible for random access response to uplink transmission scheduling information?(Single choice)

B. PDCCH

3. Which of the following are features of downlink reference signals?

A. LTE reference signals are discretely distributed, while CDMA/UMTS pilot signals are continuous.
B. REs occupied by reference signals must be left blank on the same REs of other antenna ports.
C. SRSs are transmitted in the last symbol of each subframe. The period and bandwidth are configurable.
D. For each antenna port, the frequency domain spacing of the RS is six subcarriers.

4. How many physical cell IDs exist in the LTE system?(Single choice)

D. 512

5. Which of the following are random access procedures?

A. The higher layer requests to send a random access preamble, and then triggers a physical random access procedure.
B. The higher layer indicates, in the request, a preamble index, a preamble target receive power, a related RA-RNTI, and a resource status of a random access channel.
C. The UE determines that the transmit power of the random access channel is the target receive power of the preamble plus the path loss. The transmit power does not exceed the maximum transmit power of the UE, and the path loss is the value estimated by the UE through the downlink.
D. The UE calculates the transmit power and uses the selected preamble sequence to transmit a single preamble in a specified random access channel resource.
View more
  • x
  • convention：
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