SECTOR 5G PARAMETERS

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SECTOR 5G PARAMETERS

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All the 5G parameters in the sector initially have a default configuration when selecting the type of service (technology) of the study, with adequate or typical values ​​of the type of simulation to be carried out. It is recommended, however, to be reviewed and specified by the user to adapt their simulation to the reality of the equipment to be simulated.

 

coverage_tx_5g

 

Scheduler: The algorithm implemented by the scheduler is responsible for distributing the 5G channel resources (frequency and time) dynamically among the different users of the system. Its operation is similar to that explained for the LTE scheduler.

Slot configuration: Indicates how each of the symbols of a slot are used, defining which symbols are used for uplink and which for downlink within a specific slot.

In TDD services, 3GPP establishes 62 predefined symbol combinations in a slot, as can be seen in the following table.

coverage_5g_slots

Source: https://www.sharetechnote.com/html/5G/5G_FrameStructure.html

Numerology: Allows you to define the spacing between the subcarriers and the length of the symbol. In LTE, only one type of subcarrier spacing is allowed (15kHz), while in NR several types of subcarrier spacing is allowed: 15kHz, 30kHz, 60kHz, 120kHz and 240kHz.

The following table shows the possible numerology configurations with the respective subcarrier spacings.

 

μ

Δf = 2μ 15 [kHz]

Cyclic prefix

Data use

Synchronization use

0

15

Normal

Yes

Yes

1

30

Normal

Yes

Yes

2

60

Normal, Extended

Yes

No

3

120

Normal

Yes

Yes

4

240

Normal

No

Yes

 

Traffic load: Defines what percentage of resources are being used of the total resources available in a sector. It is used to calculate the SINR interference in Xirio. The more resources used in a sector, the greater the interference generated.

MIMO DL: Allows you to enable or disable the use of MIMO on the downlink channel. The MIMO options available in Xirio are 2x2, 4x2, 4x4, 8x8, 8x2, and 8x4. The use of this type of technique allows obtaining very high data rates through the use of multiple channels in parallel.

MIMO DL gain: This parameter quantifies the gain obtained in the case of using MIMO techniques in the downlink direction.

Noise rise: Noise rise quantifies the interference received at the base station in the uplink direction.

Noise factor: Industry noise factor.

Alpha (power control): it is the compensation factor for losses in the path used by the mobile terminal as a power control mechanism.

P0 (power control): is the desired power in the base station that is obtained from the target SINR defined by the user.

MIMO UL: Allows you to enable or disable the use of MIMO on the downstream channel. The options available in Xirio for MIMO are 1x8, 2x8, 4x8 and 8x8.

UL MIMO gain: This parameter quantifies the gain obtained in the case of using MIMO techniques in the upstream direction.