Gain adjustment control method, device and apparatus, and computer readable storage medium

Patent metadata

Field	Value
Publication number	US-12245170-B2
Application number	US-202017624728-A
Country	US
Kind code	B2
Filing date	May 19, 2020
Priority date	Jul 5, 2019
Publication date	Mar 4, 2025
Grant date	Mar 4, 2025

Abstract

A gain adjustment control method, device and apparatus, and a non-transitory computer-readable storage medium are disclosed. The method may include: calculating energy of a full-bandwidth physical downlink shared channel (PDSCH) transmission signal in an intermediate frequency digital domain or a baseband digital domain according to a set calculation period; determining a gain control adjustment parameter according to the calculated energy of the full-bandwidth PDSCH transmission signal; and controlling and adjusting a gain of a receiver according to the determined gain control adjustment parameter and a gain adjustment rule.

First claim

The invention claimed is:

1. A gain adjustment control method, comprising:
calculating energy of a full-bandwidth physical downlink shared channel (PDSCH) transmission signal in an intermediate frequency digital domain or a baseband digital domain according to a set calculation period;
determining a gain control adjustment parameter according to the calculated energy of the full-bandwidth PDSCH transmission signal; and
controlling and adjusting a gain of a receiver according to the determined gain control adjustment parameter and a gain adjustment rule;
wherein controlling and adjusting the gain of a receiver according to the determined gain control adjustment parameter and the gain adjustment rule comprises:
selecting a largest one from gain control adjustment parameters acquired for last H times, as a target gain control adjustment parameter X; and
controlling and adjusting a gain of the receiver according to the target gain control adjustment parameter X and a gain adjustment rule.

2. The gain adjustment control method of claim 1 , wherein calculating the energy of the full-bandwidth PDSCH transmission signal in the intermediate frequency digital domain comprises:
calculating average power P ssb of a cell reference signal SSblock of k1 symbols for a respective antenna which schedules bandwidth of N Resource Blocks (RB), where k1 is an integer greater than or equal to 2;
calculating energy P pdsch_bc_20rssi of a PDSCH signal of N RB, according to the P ssb and a power offset value per RB of PDSCH; and
adding P pdsch_bc_20rssi with a bandwidth conversion coefficient M, a multi-antenna gain BFG value and a reserved protection value Gu to acquire the energy of the full-bandwidth PDSCH transmission signal P pdsch_bf_All , where M=10*(log 10 273-log 10 X), the BFG value is a maximum power difference between the PDSCH signal and SSblock signal acquired on the respective antenna.

3. The gain adjustment control method of claim 2 , further comprising:
measuring a power P csi rssi_All of a channel quality measurement reference signal (CSIRS) for a cell, and measuring a service symbol PDSCH signal power P sym rssi_All ; and
determining a gain control adjustment parameter according to the energy of the full-bandwidth PDSCH transmission signal comprising:
selecting a largest one from P pdsch_bf_All , P csi rssi_All and P sym rssi_All as the gain control adjustment parameter.

4. A non-transitory computer-readable storage medium storing at least one computer program executable by at least one processor to implement the gain adjustment control method of claim 3 .

5. The gain adjustment control method of claim 2 , wherein the value Gu is 3 db.

6. A non-transitory computer-readable storage medium storing at least one computer program executable by at least one processor to implement the gain adjustment control method of claim 5 .

7. The gain adjustment control method of claim 2 , wherein,
in response to an absence of PDSCH signal in a current calculation period, a BFG value in a previous calculation period which involving a PDSCH signal is adopted; and
in response to a duration of a currently adopted BFG value being longer than a first preset duration, the currently adopted BFG value is set as a preset BFG value.

8. A non-transitory computer-readable storage medium storing at least one computer program executable by at least one processor to implement the gain adjustment control method of claim 7 .

9. A non-transitory computer-readable storage medium storing at least one computer program executable by at least one processor to implement the gain adjustment control method of claim 2 .

10. The gain adjustment control method of claim 1 , wherein calculating the energy of the full-bandwidth PDSCH transmission signal in the baseband digital domain comprises:
calculating an average strength P ssb-rssi of a received signal of SSblock of k2 symbols for a respective antenna which schedules bandwidth of N RB, where k1 is an integer greater than or equal to 2;
calculating energy P pdsch_bc_20rssi of a PDSCH signal of N RB, according to P ssb-rssi and a power offset value per RB of PDSCH; and
adding P pdsch_be_20rssi with a bandwidth conversion coefficient M, a multi-antenna gain BFG value and a reserved protection value Gu to acquire the energy of the full-bandwidth PDSCH transmission signal P pdsch_bf_All .

11. The gain adjustment control method of claim 10 , wherein determining a gain control adjustment parameter according to the energy of the full-bandwidth PDSCH transmission signal comprises:
selecting a largest one from P ssb-rssi , P pdsch_bc_20rssi and P pdsch_bf_All as the gain control adjustment parameter.

12. A non-transitory computer-readable storage medium storing at least one computer program executable by at least one processor to implement the gain adjustment control method of claim 11 .

13. A non-transitory computer-readable storage medium storing at least one computer program executable by at least one processor to implement the gain adjustment control method of claim 10 .

14. The gain adjustment control method of claim 1 , wherein,
the receiver has L gain levels, energy values of adjacent gain levels have an overlapping area, and L is an integer greater than or equal to 2; and
the gain adjustment rule comprises:
determining a target gain level according to the target gain control adjustment parameter X; and
switching a gain level, according to the target gain level and the currently adopted gain level;
wherein determining a target gain level according to the target gain control adjustment parameter X comprises:
when the target gain control adjustment parameter X is located in the overlapping area of energy values of adjacent gain levels, and the currently adopted gain level is not in the adjacent gain levels, determining that a lower gain level in the adjacent gain levels is the target gain level; when the currently adopted gain level is in the adjacent gain levels, determining that the currently adopted gain level is the target gain level; and
when the target gain control adjustment parameter X falls into a range of energy values of a certain gain level and is located outside the overlapping area of energy values, determining that a gain level where X falls into is the target gain level.

15. The gain adjustment control method of claim 14 , further comprising at least one of:
in a second preset duration, in response to a detection that the currently adopted gain level is switched to the target gain level for t1 times, and the target gain level is higher than the currently adopted gain level, locking the gain level after a last switching within a preset locking time period; and
in a third preset duration, in response to a detection that the currently adopted gain level has not been switched, and there is a gain level lower than the currently adopted gain level, switching the currently adopted gain level to a next gain level which is lower than the currently adopted gain level.

16. A non-transitory computer-readable storage medium storing at least one computer program executable by at least one processor to implement the gain adjustment control method of claim 1 .

17. A gain adjustment control device, comprising:
an energy acquisition module, configured to calculate energy of a full-bandwidth physical downlink shared channel (PDSCH) transmission signal in an intermediate frequency digital domain or a baseband digital domain according to a set calculation period; and
a gain control module, configured to determine a gain control adjustment pa

Assignees

• Zte Corp

Inventors

• You Wei
• Huang Jun
• Li Gang
• Li Jun
• Xiang Fei

Classifications

• H04W52/367

  Power values between minimum and maximum limits, e.g. dynamic range · CPC title

• H04W52/0245

  according to signal strength · CPC title

• Y02D30/70

  in wireless communication networks · CPC title

• H03G3/3078

  Circuits generating control signals for digitally modulated signals · CPC title

• H04B1/10

  Means associated with receiver for limiting or suppressing noise or interference · CPC title