CN111491355B

CN111491355B - Downlink power configuration method and device

Info

Publication number: CN111491355B
Application number: CN201910084836.7A
Authority: CN
Inventors: 郭胜杰
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2019-01-29
Filing date: 2019-01-29
Publication date: 2021-10-01
Anticipated expiration: 2039-01-29
Also published as: CN111491355A

Abstract

The embodiment of the invention provides a downlink power configuration method and a downlink power configuration device. The method comprises the following steps: acquiring a power offset value between the PDSCH (physical downlink shared channel) forming gain and the SSB (single side band) forming gain of a target base station; configuring the transmission power of the PDSCH and the transmission power of the SSB according to the power deviation value and a preset single resource element capacity EPRE of the target base station; acquiring a Modulation and Coding Strategy (MCS) parameter of a user of the target base station, and determining the MCS level of the target base station according to the MCS parameter and a preset MCS threshold; and adjusting the transmitting power of the PDSCH according to the MCS level. The embodiment of the invention solves the problem that the power configuration strategy of the existing downlink physical channel has certain limitation in the prior art.

Description

Downlink power configuration method and device

Technical Field

The embodiment of the invention relates to the technical field of mobile communication, in particular to a downlink power configuration method and device.

Background

In a New air interface technology system (5th Generation New Radio, 5G NR) of the fifth Generation mobile communication technology, a cell coverage depends on power configuration of each downlink physical channel at a base station side; according to the 5G protocol 38.214, the base station side can configure single Resource Element capacity (EPRE) and power offset of multiple physical channels. Specifically, the protocol specifies that the EPRE of each physical channel is constant, but there may be a power offset. In consideration of the importance of time-frequency Synchronization, a Primary Synchronization Signal (PSS) is configured to support a 3dB power offset from a Secondary Synchronization Signal (SSS); meanwhile, considering a beam transmission mode of a Single Side Band (SSB) and a Channel State indication Reference signal (CSI-RS), when the CSI-RS is transmitted in a wide beam, the CSI-RS needs to be configured to have a power offset of 3dB to 6dB with respect to the SSB in order to achieve the same coverage situation compared with an SSB narrow beam.

Referring to the relevant protocols, the power allocation of the downlink physical channel in the actual configuration is determined by various factors, the EPRE value of the SSB directly affects the cell coverage, and the larger the value is, the farther the cell coverage is. However, the existing power configuration strategy for the downlink physical channel has certain limitations.

On the one hand, the existing strategy does not consider the influence of downlink beamforming. In the case of beamforming, the coverage of a Physical Downlink Shared Channel (PDSCH) with the same power is often larger than that of an SSB. In a general urban coverage scene, a base station configures the same EPRE for SSB and PDSCH; however, even in the case of the same power allocation, since the PDSCH of the user level adopts the downlink beamforming strategy, the coverage of the PDSCH is wider than that of the SSB, which results in waste of power allocation.

On the other hand, the existing strategies do not take into account the channel environment of the user. In a rural coverage scene, a manufacturer configures certain power offset of EPRE of SSB relative to EPRE of PDSCH to enhance downlink coverage due to a small number of users in a cell coverage range; and the PDSCH resources with the same symbol as the SSB are reduced in an EPRE equal ratio or the number of Physical Resource Blocks (PRBs) is limited so as to satisfy that the sum of the power allocated to each Resource Element (RE) does not exceed the total power transmitted by the base station side, thereby improving the coverage and ensuring the throughput of cell edge users. However, this strategy ignores the channel state of the user, and when the user is in a good condition, the user can reach peak speed if the EPRE of the PDSCH transmitted by the base station side is lower than the cell configuration power, so that the downlink power allocation strategy of the PDSCH can be further optimized.

Disclosure of Invention

The embodiment of the invention provides a downlink power configuration method and a downlink power configuration device, which are used for solving the problem that the existing power configuration strategy of a downlink physical channel has certain limitation in the prior art.

In one aspect, an embodiment of the present invention provides a downlink power configuration method, where the method includes:

acquiring a power offset value between the PDSCH (physical downlink shared channel) forming gain and the SSB (single side band) forming gain of a target base station;

configuring the transmission power of the PDSCH and the transmission power of the SSB according to the power deviation value and a preset single resource element capacity EPRE of the target base station;

acquiring a Modulation and Coding Strategy (MCS) parameter of a user of the target base station, and determining the MCS level of the target base station according to the MCS parameter and a preset MCS threshold;

and adjusting the transmitting power of the PDSCH according to the MCS level.

In one aspect, an embodiment of the present invention provides a downlink power configuration apparatus, where the apparatus includes:

the acquisition module is used for acquiring a power offset value between the PDSCH (physical downlink shared channel) forming gain and the SSB (single side band) forming gain of the target base station;

a configuration module, configured to configure the transmission power of the PDSCH and the transmission power of the SSB according to the power offset value and a preset single resource element capacity EPRE of the target base station;

a determining module, configured to obtain a modulation and coding strategy MCS parameter of a user of the target base station, and determine, according to the MCS parameter and a preset MCS threshold, an MCS level to which the target base station belongs;

and the adjusting module is used for adjusting the transmitting power of the PDSCH according to the MCS level.

On the other hand, an embodiment of the present invention further provides an electronic device, which includes a memory, a processor, a bus, and a computer program that is stored in the memory and is executable on the processor, where the processor implements the steps in the downlink power configuration method when executing the program.

In still another aspect, an embodiment of the present invention further provides a non-transitory computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps in the downlink power configuration method.

According to the downlink power configuration method and device provided by the embodiment of the invention, a power offset value between a PDSCH (physical Downlink shared channel) forming gain and an SSB (Signal State switch) forming gain of a target base station is obtained; configuring the transmitting power of the PDSCH and the transmitting power of the SSB according to the power deviation value and the preset single resource element capacity EPRE of the target base station, and adjusting downlink coverage enhancement by controlling the transmitting power of the SSB and the PDSCH; acquiring a Modulation and Coding Strategy (MCS) parameter of a user of the target base station, and determining the MCS level of the target base station according to the MCS parameter and a preset MCS threshold; and adjusting the transmitting power of the PDSCH according to the MCS level, realizing the self-adaptive configuration of the PDSCH power, fully considering the influence of the transmitting power of the downlink SSB and the PDSCH on the downlink coverage enhancement, and avoiding the waste of power distribution caused by the downlink beamforming adopted by the PDSCH at the user level under the condition of same power distribution. Meanwhile, the embodiment of the invention also considers the influence of the channel state on the PDSCH transmitting power, optimizes the downlink power distribution strategy certificate of the PDSCH through the PDSCH power self-adaptive configuration, and saves resources when the user reaches the required peak speed.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.

Fig. 1 is a schematic flowchart of a downlink power configuration method according to an embodiment of the present invention;

FIG. 2 is a schematic flow diagram of an example of an embodiment of the invention;

fig. 3 is a schematic structural diagram of a downlink power configuration apparatus according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments. In the following description, specific details such as specific configurations and components are provided only to help the full understanding of the embodiments of the present invention. Thus, it will be apparent to those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the invention. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

It should be appreciated that reference throughout this specification to "an embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrase "in an embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

In various embodiments of the present invention, it should be understood that the sequence numbers of the following processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.

In the embodiments provided herein, it should be understood that "B corresponding to a" means that B is associated with a from which B can be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may be determined from a and/or other information.

Fig. 1 shows a flowchart of a downlink power configuration method according to an embodiment of the present invention.

As shown in fig. 1, a downlink power configuration method provided in the embodiment of the present invention specifically includes the following steps:

step 101, obtaining a power offset value between a PDSCH (physical downlink shared channel) forming gain and a SSB (single sideband) forming gain of a target base station.

The shaped gain is the gain caused by the shaped beam. Beamforming (Beam forming) is a signal processing technique that uses a sensor array to directionally transmit and receive signals by adjusting parameters of the basic cells of the sensor phased array such that signals at certain angles obtain constructive interference and signals at other angles obtain destructive interference; in short, beamforming is to adaptively adjust the radiation pattern of an antenna array according to a specific scene.

The power offset value is the offset between the PDSCH shaped gain and the SSB shaped gain. Optionally, if the PDSCH forming gain and the SSB forming gain of the target base station are known, the PDSCH forming gain and the SSB forming gain can be directly obtained; and according to the antenna array arrangement condition at the base station side, simulating to obtain the forming gain of the PDSCH and the SSB narrow beam, and calculating the power deviation value of the SSB relative to the PDSCH.

And step 102, configuring the transmission power of the PDSCH and the transmission power of the SSB according to the power deviation value and the preset single resource element capacity EPRE of the target base station.

Wherein, a Resource Element (RE) may also be referred to as a Resource Element, which is the smallest Resource unit in physical resources of the mobile communication network, and occupies 1 orthogonal frequency division multiplexing Symbol (OFDM Symbol) in the time domain, that is, 1/14 ms; in the frequency domain, 1 subcarrier (15 KHz). The EPRE is an EPRE of Resource Elements (REs) with full bandwidth in the same transmission power state, that is, the capacity of a single resource element when the REs with full bandwidth transmit signals with the same transmission power. After the power deviation value is obtained, the transmitting power of the PDSCH and the transmitting power of the SSB are determined and configured according to the power deviation value and the preset EPRE, so that the transmitting of the SSB and the transmitting of the PDSCH are covered at the same time, the power of the PDSCH is properly reduced, and the waste of resources is avoided.

Step 103, obtaining the modulation and coding strategy MCS parameter of the user of the target base station, and determining the MCS level to which the target base station belongs currently according to the MCS parameter and a preset MCS threshold.

After the power configuration is completed, in order to evaluate the influence of the channel state on the DSCH transmit power, a Modulation and Coding Scheme (MCS) parameter of a user (i.e., a terminal within a cell range of a target base station) is obtained at this time; in mobile communication, the configured rate is realized by an MCS index value. The MCS forms a rate table with the MCS index (i.e., MCS parameter) as a row and the factors of interest affecting the communication rate as columns of the table. Thus, each MCS parameter substantially corresponds to a physical transmission rate under a set of parameters. In practical application, the MCS parameters are divided into a plurality of levels, and each level corresponds to a certain parameter range.

Alternatively, the MCS parameter may be determined by obtaining a Channel Quality Indicator (CQI) of the user, and determining a corresponding MCS level according to the MCS parameter.

And 104, adjusting the transmitting power of the PDSCH according to the MCS level.

After the MCS level is determined, adjusting the transmitting power of the PDSCH according to the MCS level; specifically, when the MCS level currently in is high, for example, when the current user is in a good position, that is, when the channel state of the user is good, the transmission power of the PDSCH is reduced according to the preset rule, less PRB resources can be allocated to the PDSCH or the EPRE of the PDSCH channel of the user is reduced, so that the resources are saved while the peak speed required by the user is ensured;

or when the current MCS level is lower and the channel state of the user is worse, the transmission power of the PDSCH is increased according to the preset rule, more PRB resources can be allocated to the PDSCH or the EPRE of the PDSCH channel is increased, and the throughput is increased.

And if the current MCS level is moderate, continuing to configure the transmission power of the PDSCH without readjusting. In the embodiment of the invention, the power deviation value between the PDSCH forming gain and the SSB forming gain of the target base station is obtained; configuring the transmitting power of the PDSCH and the transmitting power of the SSB according to the power deviation value and the preset single resource element capacity EPRE of the target base station, and adjusting downlink coverage enhancement by controlling the transmitting power of the SSB and the PDSCH; acquiring a Modulation and Coding Strategy (MCS) parameter of a user of the target base station, and determining the MCS level of the target base station according to the MCS parameter and a preset MCS threshold; and adjusting the transmitting power of the PDSCH according to the MCS level, realizing the self-adaptive configuration of the PDSCH power, fully considering the influence of the transmitting power of the downlink SSB and the PDSCH on the downlink coverage enhancement, and avoiding the waste of power distribution caused by the downlink beamforming adopted by the PDSCH at the user level under the condition of same power distribution. Meanwhile, the embodiment of the invention also considers the influence of the channel state on the PDSCH transmitting power, optimizes the downlink power distribution strategy certificate of the PDSCH through the PDSCH power self-adaptive configuration, and saves resources when the user reaches the required peak speed. The embodiment of the invention solves the problem that the power configuration strategy of the existing downlink physical channel has certain limitation in the prior art.

Optionally, in this embodiment of the present invention, the step of obtaining a power offset value between a PDSCH forming gain and a SSB forming gain of a single sideband of a physical downlink shared channel of a target base station includes:

acquiring a Physical Downlink Shared Channel (PDSCH) forming gain and a Single Sideband (SSB) forming gain of a target base station;

and obtaining a power deviation value according to the difference value between the PDSCH forming gain and the SSB forming gain.

The power deviation value is the deviation between the PDSCH forming gain and the SSB forming gain, firstly, the PDSCH forming gain and the SSB forming gain are determined, and then, the difference value of the PDSCH forming gain and the SSB forming gain is determined to obtain the power deviation value.

For example, the power offset value may be determined according to the following equation:

ΔPower＝Gp-Gs；

wherein Δ Power is the Power offset value, Gp is the PDSCH forming gain, and Gs is the SSB forming gain.

Further, in the above embodiment of the present invention, the step of obtaining the PDSCH forming gain and the SSB forming gain of the target base station includes:

acquiring a PDSCH (physical downlink shared channel) forming gain and a single side band SSB (single side band) forming gain preset by the target base station;

or

And acquiring a preset coverage parameter of the target base station, and simulating the preset coverage parameter to obtain a Physical Downlink Shared Channel (PDSCH) forming gain and a Single Side Band (SSB) forming gain.

If the PDSCH forming gain and the SSB forming gain of the target base station are known, the PDSCH forming gain and the SSB forming gain can be directly obtained; the preset coverage parameters can be simulated according to the antenna array arrangement condition at the base station side and the preset coverage parameters of the target base station to obtain the forming gain of the PDSCH and the SSB narrow beam, and the power deviation value of the SSB relative to the PDSCH is calculated, wherein the preset coverage parameters comprise: the number of system PRBs, the maximum transmission power of a base station, carrier frequency, indoor user penetration loss, a channel model, antenna parameters and the like.

Optionally, in this embodiment of the present invention, step 102 includes:

configuring the transmission power of the PDSCH according to the following formula:

and configuring the transmit power of the SSB according to the following formula:

wherein Ep is the transmission Power of the PDSCH, Es is the transmission Power of the SSB, and Δ Power is the Power offset value; e is a preset single resource element capacity EPRE, and is an EPRE of resource elements RE with full bandwidth in the same transmission power state, that is, the single resource element capacity when the RE with full bandwidth transmits signals with the same transmission power. After the Power deviation value is obtained, the transmitting Power of the PDSCH and the transmitting Power of the SSB are determined and configured according to the formula and the preset EPRE, so that the Power difference value of the PDSCH and the SSB is delta Power, the transmitting of the SSB and the transmitting of the PDSCH are covered at the same time, the Power of the PDSCH is properly reduced, and the waste of resources is avoided.

Optionally, as general urban coverage, users are distributed very densely, and the occupation ratio of downlink spectrum resources is high; the PDSCH and SSB transmission power are configured in the above configuration, but as an enhanced coverage, such as a rural coverage area, the number of users is small and the influence of obstacles such as tall buildings on the channel state is small, and the configuration can be continued in the following manner. Specifically, when the network coverage of the target base station is enhanced coverage, the step of configuring the transmission power of the PDSCH and the transmission power of the SSB includes, after the step of configuring the transmission power of the PDSCH and the transmission power of the SSB:

step one, increasing a preset power unit for the configured transmitting power of the SSB, and decreasing the preset power unit for the transmitting power of the PDSCH, so as to obtain a first throughput of an edge user of a cell of the target base station;

step two, increasing the configured transmitting power of the SSB by a preset power unit, reducing the number of Physical Resource Blocks (PRBs) occupied by the PDSCH by a preset resource unit, and acquiring a second throughput of edge users of the cell of the target base station;

and thirdly, selecting a mode corresponding to the throughput with a larger value in the first throughput and the second throughput, and reconfiguring the transmission power of the PDSCH and the transmission power of the SSB.

In the first step, a strategy that the PDSCH resources with the same symbols as the SSB are reduced in an EPRE (evolved physical resource element) equal ratio is adopted, the transmitting power of the SSB is increased by one preset power unit, the transmitting power of the PDSCH is reduced by one preset power unit, and the second throughput of the edge user of the cell of the target base station is measured; edge users, i.e., users with throughput ordering next, such as the last 5% of users.

In the second step, the method of limiting the number of PRBs occupied by the PDSCH is adopted, the transmitting power of the SSB is increased by one preset power unit, the number of PRBs of the physical resource blocks occupied by the PDSCH is reduced by one preset resource unit, meanwhile, the RE power allocated to the PDSCH for the frequency domain is unchanged, and the second throughput of the edge user is measured at the moment.

In step three, for the two schemes in step one and step two, the transmit power of the SSB needs to be increased according to the deployment range of the base station of the operator, the throughput of the cell edge user under the condition that the SSB transmit power is increased identically is measured, the throughput of the edge user of the two schemes is compared, and the scheme with the larger throughput is selected for configuration.

Optionally, in an embodiment of the present invention, step 103 includes:

acquiring a Channel Quality Indicator (CQI) reported by a user of the target base station;

and determining the MCS parameters corresponding to the CQI according to the corresponding relation between the preset CQI and the modulation and coding strategy MCS parameters.

The Channel Quality Indicator (CQI) is used for indicating the Quality of the current Channel, and the value range is 0 to 31 corresponding to the signal-to-noise ratio of the Channel. After the power configuration is completed, the influence of the channel state on the PDSCH transmitting power is considered, the CQI reported by the user is obtained, and the CQI is obtained according to the preset corresponding relation to determine the corresponding MCS parameter.

Further, the step of determining the MCS level to which the target base station currently belongs according to the MCS parameter and a preset MCS threshold includes:

in case one, if MCS parameters corresponding to CQIs reported by a user for a first preset number of consecutive times are all greater than or equal to a first preset threshold, determining that the MCS level to which the target base station belongs is a first level.

And in case two, if the MCS parameters corresponding to the CQIs reported by the user for a second preset number of consecutive times are both smaller than the first preset threshold and larger than a second preset threshold, determining that the MCS level to which the target base station belongs is the second level.

And in case of the third condition, if the MCS parameters corresponding to the CQIs reported by the user for the third preset number of consecutive times are all less than or equal to the second preset threshold, determining that the MCS level to which the target base station belongs is the third level.

Specifically, a first preset threshold for determining that the resource occupied by the user is a good point and a second preset threshold for determining that the resource occupied by the user is a bad point are preset. In case one, determining an MCS parameter according to a CQI reported by a user and a scheduling feedback of a base station, counting whether the MCS parameter is greater than or equal to a first preset threshold, if so, adding 1 to a counter if the MCS parameter of the counter is greater than or equal to the first preset threshold, and if not, resetting the counter; and if the numerical value counted by the counter reaches a first preset number, judging that the MCS level to which the target base station belongs currently is a first level.

Similarly, the step two and the step three determine the MCS level in the same manner as in the step one, and the embodiments of the present invention are not described herein again.

Optionally, in this embodiment of the present invention, the step of adjusting the transmission power of the PDSCH according to the MCS level includes:

if the MCS level is the first level, reducing the transmission power of the PDSCH to a first preset power value; namely, when the channel state of the user is good, the transmission power of the PDSCH is reduced according to the preset rule, less PRB resources can be distributed to the PDSCH or the EPRE of the PDSCH channel of the user is reduced, so that the peak speed required by the user is ensured and the resources are saved;

if the MCS level is the third level, the transmission power of the PDSCH is increased to a second preset power value, that is, when the channel state of the user is poor, the transmission power of the PDSCH is increased according to a preset rule, so that more PRB resources can be allocated to the PDSCH or the EPRE of the PDSCH channel can be increased, and the throughput can be increased. The second preset power value is higher than the first preset power value.

If the MCS level is the second level, the transmission power of the PDSCH may not be adjusted at this time.

In the embodiment of the invention, the power deviation value between the PDSCH forming gain and the SSB forming gain of the target base station is obtained; configuring the transmitting power of the PDSCH and the transmitting power of the SSB according to the power deviation value and the preset single resource element capacity EPRE of the target base station, and adjusting downlink coverage enhancement by controlling the transmitting power of the SSB and the PDSCH; acquiring a Modulation and Coding Strategy (MCS) parameter of a user of the target base station, and determining the MCS level of the target base station according to the MCS parameter and a preset MCS threshold; and adjusting the transmitting power of the PDSCH according to the MCS level, realizing the self-adaptive configuration of the PDSCH power, fully considering the influence of the transmitting power of the downlink SSB and the PDSCH on the downlink coverage enhancement, and avoiding the waste of power distribution caused by the downlink beamforming adopted by the PDSCH at the user level under the condition of same power distribution. Meanwhile, the embodiment of the invention also considers the influence of the channel state on the PDSCH transmitting power, optimizes the downlink power distribution strategy certificate of the PDSCH through the PDSCH power self-adaptive configuration, and saves resources when the user reaches the required peak speed.

Referring to fig. 2, as an example, fig. 2 shows a specific application process of the downlink power configuration method provided by the embodiment, which mainly includes the following steps:

step 201, according to the antenna array arrangement situation at the base station side, simulation is performed to obtain the forming gains of the PDSCH and the SSB narrow beam, which are Gp and Gs respectively.

Step 202, in a general urban coverage scenario, setting a POWER offset value Δ POWER of the SSB relative to the PDSCH according to the shaped gain to obtain EPERs Es and Ep of the SSB and the PDSCH, and executing step 207.

Step 203, in the scene of coverage enhancement, setting a POWER offset value Δ POWER of the SSB relative to the PDSCH according to the shaped gain, obtaining EPERs of the SSB and the PDSCH as Es and Ep respectively, and continuing to execute step 204 and step 205.

Step 204, scheme 1: raise Δ SSB for Es and lower Δ PDSCH for the corresponding Ep.

Step 205, scheme 2: and increasing Delta SSB for Es, and reducing the number of PRBs occupied by the corresponding PDSCH.

Step 206, selecting the scheme with high throughput in the scheme 1 and the scheme 2 as a configuration scheme.

Step 207, according to the CQI reported by the user, determining MCS level M, setting the MCS thresholds of good point, middle point and bad point to V1 and V2, respectively, and setting a counter Nc to indicate the number of times of continuous MCS level.

Step 208, if M > V1, Nc ≧ N1, and N1 is the first preset number, execute step 2081, while ensuring the user peak rate, reducing the transmission power of PDSCH to E1; wherein E1 is a first preset power value, that is, when the channel state of the user is better, the transmission power of the PDSCH is the first preset power value, and at this time, less PRB resources can be allocated to the PDSCH of the user or the EPRE of the PDSCH channel of the user is reduced, so as to ensure that the user reaches the required peak speed and save resources at the same time;

otherwise step 209 is performed.

Step 209, if M is greater than or equal to V1 and less than V2, go to step 2091, do not change the PDSCH transmission power; otherwise, step 210 is performed.

In step 210, M is less than or equal to V2, Nc is more than or equal to N2, and N2 is the second preset number, then step 2101 is executed to increase the transmission power of the user PDSCH to E2.

When the channel state of the user is poor, the E2 is the second preset power value, and the transmission power of the PDSCH is raised, so that more PRB resources can be allocated to the PDSCH or the EPRE of the PDSCH channel is raised, and the throughput is increased. The second preset power value is higher than the first preset power value.

The downlink power configuration method provided by the embodiment of the present invention is described above, and a downlink power configuration device provided by the embodiment of the present invention will be described below with reference to the accompanying drawings.

Referring to fig. 3, an embodiment of the present invention provides a downlink power configuration apparatus, where the apparatus includes:

an obtaining module 301, configured to obtain a power offset value between a PDSCH forming gain of a physical downlink shared channel of a target base station and a SSB forming gain of a single sideband;

a configuring module 302, configured to configure the transmission power of the PDSCH and the transmission power of the SSB according to the power offset value and a preset single resource element capacity EPRE of the target base station;

a determining module 303, configured to obtain a modulation and coding strategy MCS parameter of a user of the target base station, and determine, according to the MCS parameter and a preset MCS threshold, an MCS level to which the target base station belongs;

an adjusting module 304, configured to adjust the transmission power of the PDSCH according to the MCS level.

Optionally, in this embodiment of the present invention, the obtaining module 301 includes:

the gain acquisition submodule is used for acquiring the physical downlink shared channel PDSCH forming gain and the single side band SSB forming gain of the target base station;

and the offset value obtaining submodule is used for obtaining a power offset value according to the difference value between the PDSCH forming gain and the SSB forming gain.

Optionally, in this embodiment of the present invention, the gain obtaining sub-module is configured to:

or

Optionally, in this embodiment of the present invention, the configuration module 302 is configured to:

wherein Ep is the transmission Power of the PDSCH, Es is the transmission Power of the SSB, and Δ Power is the Power offset value; e is a preset single resource element capacity EPRE.

Optionally, in an embodiment of the present invention, the apparatus includes:

a configuration adjustment module, configured to, when the network coverage of the target base station is enhanced coverage,

after configuring the transmitting power of the PDSCH and the transmitting power of the SSB, increasing the configured transmitting power of the SSB by a preset power unit, and reducing the transmitting power of the PDSCH by the preset power unit to obtain a first throughput of an edge user of a cell of the target base station;

increasing the configured transmitting power of the SSB by a preset power unit, reducing the number of PRBs (physical resource blocks) occupied by the PDSCH by a preset resource unit, and acquiring the second throughput of edge users of the cell of the target base station;

and selecting a mode corresponding to the throughput with a larger value in the first throughput and the second throughput, and reconfiguring the transmission power of the PDSCH and the transmission power of the SSB.

Optionally, in this embodiment of the present invention, the EPRE is an EPRE of resource elements REs with a full bandwidth in the same transmission power state.

Optionally, in this embodiment of the present invention, the determining module 303 includes:

a CQI acquisition submodule for acquiring a channel quality indicator CQI reported by a user of the target base station;

and the parameter determining submodule is used for determining the MCS parameters corresponding to the CQI determination according to the corresponding relation between the preset CQI and the modulation and coding strategy MCS parameters.

a rank determination submodule to:

if MCS parameters corresponding to CQI reported by a user for a first preset number of continuous times are all larger than or equal to a first preset threshold value, determining the MCS level to which the target base station belongs currently as a first level;

if the MCS parameters corresponding to the CQI reported by the user for a second preset number of times are both smaller than the first preset threshold and larger than a second preset threshold, determining that the MCS level to which the target base station belongs currently is a second level;

and if the MCS parameters corresponding to the CQI reported by the user for the third preset number of times are all smaller than or equal to the second preset threshold, determining that the MCS level to which the target base station belongs currently is a third level.

Optionally, in an embodiment of the present invention, the adjusting module 304 includes:

a first adjusting submodule, configured to reduce the transmission power of the PDSCH to a first preset power value if the MCS level is the first level;

and the second adjusting submodule is used for increasing the transmitting power of the PDSCH to a second preset power value if the MCS level is the third level.

In the above embodiments of the present invention, the obtaining module 301 obtains the power offset value between the PDSCH forming gain and the SSB forming gain of the target base station; the configuration module 302 configures the transmission power of the PDSCH and the transmission power of the SSB according to the power offset value and the preset single resource element capacity EPRE of the target base station, and adjusts downlink coverage enhancement by controlling the transmission powers of the SSB and the PDSCH; the determining module 303 obtains a modulation and coding strategy MCS parameter of a user of the target base station, and determines an MCS level to which the target base station belongs currently according to the MCS parameter and a preset MCS threshold; the adjusting module 304 adjusts the transmitting power of the PDSCH according to the MCS level, so as to implement adaptive configuration of the PDSCH power, fully consider the influence of the downlink SSB and the PDSCH transmitting power on downlink coverage enhancement, and avoid the waste of power allocation caused by downlink beamforming of the user-level PDSCH under the same power allocation. Meanwhile, the embodiment of the invention also considers the influence of the channel state on the PDSCH transmitting power, optimizes the downlink power distribution strategy certificate of the PDSCH through the PDSCH power self-adaptive configuration, and saves resources when the user reaches the required peak speed.

The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.

Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

An example is as follows:

fig. 4 illustrates a physical structure diagram of a server, and as shown in fig. 4, the server may include: a processor (processor)410, a communication Interface 420, a memory (memory)430 and a communication bus 440, wherein the processor 410, the communication Interface 420 and the memory 430 are communicated with each other via the communication bus 440. The processor 410 may call logic instructions in the memory 430 to perform the following method:

and adjusting the transmitting power of the PDSCH according to the MCS level.

In addition, the logic instructions in the memory 430 may be implemented in the form of software functional units and stored in a computer readable storage medium when the software functional units are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

Claims

1. A downlink power configuration method is characterized in that the method comprises the following steps:

and adjusting the transmitting power of the PDSCH according to the MCS level.

2. The method of claim 1, wherein the step of obtaining a power offset value between a PDSCH (physical downlink shared channel) forming gain and a SSB (single side band) forming gain of the target base station comprises:

3. The method of claim 2, wherein the step of obtaining the PDSCH forming gain and the SSB forming gain of the target base station comprises:

or

4. The method of claim 1, wherein the step of configuring the PDSCH transmission power and the SSB transmission power according to the power offset value and a preset single resource element capacity (EPRE) of the target base station comprises:

5. The method of claim 1, wherein when the network coverage of the target base station is enhanced coverage, the step of configuring the transmission power of the PDSCH and the transmission power of the SSB is followed by:

increasing a preset power unit for the configured transmitting power of the SSB, and decreasing the preset power unit for the transmitting power of the PDSCH to obtain a first throughput of an edge user of a cell of the target base station;

6. The method of claim 1, wherein the EPRE is an EPRE for resource elements, REs, of full bandwidth at a same transmit power state.

7. The method of claim 1, wherein the step of obtaining the Modulation and Coding Strategy (MCS) parameters of the user of the target base station comprises:

8. The method of claim 7, wherein the step of determining the MCS level to which the target base station currently belongs according to the MCS parameter and a preset MCS threshold comprises:

9. The method of claim 8, wherein the step of adjusting the transmit power of the PDSCH according to the MCS level comprises:

if the MCS level is the first level, reducing the transmission power of the PDSCH to a first preset power value;

and if the MCS level is the third level, increasing the transmission power of the PDSCH to a second preset power value.

10. An apparatus for downlink power configuration, the apparatus comprising:

11. An electronic device comprising a memory, a processor, a bus, and a computer program stored on the memory and executable on the processor, the processor implementing the steps in the downlink power configuration method according to any one of claims 1 to 9 when executing the program.

12. A non-transitory computer-readable storage medium having stored thereon a computer program, characterized in that: the program, when executed by a processor, implements the steps in the downlink power configuration method according to any one of claims 1 to 9.