CN113645684B

CN113645684B - Downlink power self-adaptive distribution method, device, apparatus and storage medium

Info

Publication number: CN113645684B
Application number: CN202010391928.2A
Authority: CN
Inventors: 褚红发; 张凌雁; 石蕊; 赵瑾波
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2020-05-11
Filing date: 2020-05-11
Publication date: 2023-07-04
Anticipated expiration: 2040-05-11
Also published as: CN113645684A

Abstract

The invention discloses a downlink power self-adaptive allocation method, equipment, a device and a storage medium, which are used for reasonably allocating downlink resources and improving the throughput of a whole cell system, and the downlink power self-adaptive allocation method provided by the embodiment of the invention comprises the following steps: dividing the user terminals according to the frequency spectrum efficiency of the user terminals in the cell to obtain a first user set and a second user set, wherein the frequency spectrum efficiency of the user terminals in the first user set is larger than a corresponding first preset frequency spectrum efficiency threshold; and re-distributing surplus power allowance of the user terminals in the first user set to the user terminals in the second user set, distributing the surplus power allowance to the user terminals in the second user set on the premise of ensuring the service requirement of the user terminals in the first user set, distributing more downlink power to the user terminals in the second user set, ensuring the fairness of user terminal resource scheduling of the two user sets and improving the throughput of the whole cell system.

Description

Downlink power self-adaptive distribution method, device, apparatus and storage medium

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method, an apparatus, a device, and a storage medium for adaptively allocating downlink power.

Background

With the progress of technology, communication technology has been rapidly developed, and in the communication process, a base station provides downlink power for a terminal and communicates with the terminal based on the downlink power. With the wide application of space division multiplexing technology in a multi-antenna environment, the system capacity and the number of user terminals are dramatically increased, so that in order to make the user terminals have better communication quality, the base station needs to reasonably allocate downlink resources to each user terminal.

In the related art, a base station preferentially distributes downlink power to a part of areas by dividing a cell into different areas, so that the downlink power of user terminals in the areas is ensured, and the part of user terminals has better communication quality.

However, the service may be reduced in the communication process for the ue in this partial area, the required downlink power may be reduced, and the downlink power required for the ue in other areas in the cell may be increased, which results in poor communication quality for the ue in other areas in the cell, and may not meet the service requirement.

Disclosure of Invention

The invention provides a downlink power self-adaptive allocation method, equipment, a device and a storage medium, which are used for reasonably reallocating downlink resources and improving the throughput of a whole cell system.

In a first aspect, a downlink power adaptive allocation method provided by an embodiment of the present invention includes:

dividing the user terminals according to the frequency spectrum efficiency of the user terminals in the cell to obtain a first user set and a second user set, wherein the frequency spectrum efficiency of the user terminals in the first user set is larger than a corresponding first preset frequency spectrum efficiency threshold;

and distributing the power allowance of the user terminals in the first user set to the user terminals in the second user set.

According to the method, through the spectrum efficiency of all user terminals in the cell, the user terminals with better communication quality are divided into the first user set, the user terminals with poorer communication quality are divided into the second user set, the spectrum efficiency of the user terminals reflects the quality of the communication, whether the service demands of the user terminals are met or not can be measured, and further surplus power margins of the user terminals capable of meeting the service demands are redistributed to the user terminals incapable of meeting the service demands, so that on the premise of guaranteeing the basic service demands of the user terminals in the first user set, the surplus power margins of the user terminals in the first user set except the service demands are distributed to the user terminals in the second user set as much as possible, more downlink power is distributed to the user terminals in the second user set, the communication quality of the user terminals in the second user set is improved, the fairness of the user terminal resource scheduling of the two user sets is guaranteed, the distribution of the downlink power is more reasonable, and the throughput of the whole cell system is improved.

In an alternative embodiment, the power headroom of the user terminals in the first set of users is determined by:

and determining the power allowance of each user terminal in the first user set according to the scheduling type of the user terminal.

According to the method, the power headroom of each user terminal in the first user set is determined by considering the scheduling type of the user terminal and adopting a mode suitable for the type aiming at different scheduling types.

In an optional embodiment, the determining, according to the scheduling type of the ue, a power headroom of each ue in the first user set includes:

and for each user terminal with the first user centralized scheduling type of continuous scheduling, determining the power allowance of each user terminal based on the received transmission class control character fed back by the user terminal.

According to the method, for each user terminal which is continuously scheduled, the current power margin of the user terminal is adjusted in real time every time when the transmission type control character fed back by the user terminal is received, so that the power margin obtained after adjustment can reflect the real channel environment more accurately, and further, the phenomenon that the obtained power margin is too different from the real channel environment in real-time communication, and the downlink power of the user terminal is insufficient in the first user concentration when the distributed power margin is too much is avoided; or the downlink power of the user terminal in the second user set is insufficient when the allocated power margin is too small. And aiming at the channel environment which changes in real time, the perception of the user terminal side is satisfied.

In an optional embodiment, the determining the power headroom of each ue based on the received transmission class control character fed back by the ue includes:

when an Acknowledgement Character (ACK) fed back by a user terminal is received once, the current power margin of the user terminal is up-regulated; and

and (4) after receiving Non-acknowledgement (NACK) fed back by the user terminal once, the current power headroom of the user terminal is adjusted downwards.

According to the method, for each user terminal which is continuously scheduled, every time feedback ACK of the user terminal is received, the current channel environment of the user terminal is good, the current downlink power can meet the requirement of the user terminal, and the user terminal can provide more power headroom, so that the current power headroom of the user terminal is adjusted upwards, and more power headroom is distributed; every time a feedback NACK is received from a user terminal, the current channel environment of the user terminal is poor, the current downlink power cannot meet the user terminal, and the user terminal cannot provide more power headroom, so that the current power headroom of the user terminal is adjusted down, the current service quality (Quality of Service, QOS for short) is guaranteed, and the perception of the user terminal side is met.

for each user terminal of which the first user centralized scheduling type is discontinuous scheduling, determining the spectrum efficiency allowance of each user terminal of which the first user centralized scheduling is discontinuous scheduling according to the spectrum efficiency of each user terminal and a corresponding second preset spectrum efficiency threshold;

and determining the power headroom of each user terminal in the first user set in discontinuous scheduling according to the spectrum efficiency headroom of each user terminal in the first user set in discontinuous scheduling and a preset coefficient, wherein the preset coefficient is a mapping ratio between preset spectrum efficiency and power headroom.

According to the method, for each user terminal in discontinuous scheduling, the redundant spectrum efficiency can be determined through the spectrum efficiency of each user terminal in discontinuous scheduling and the corresponding second preset spectrum efficiency threshold value, and then the power margin is determined according to the mapping ratio between the redundant spectrum efficiency and the power margin, so that the power margin of each user terminal in discontinuous scheduling in the first user set can be determined when the transmission type control character fed back by the user terminal cannot be received.

In an optional implementation manner, the dividing the ue according to the spectrum efficiency of the ue in the cell to obtain a first ue set and a second ue set includes:

determining candidate user terminals of the first user set, wherein the spectrum efficiency of each candidate user terminal is larger than a corresponding first preset spectrum efficiency threshold;

determining a target user terminal from the candidate user terminals according to the relative sizes among the spectrum efficiency of all the user terminals in the cell, dividing the target user terminal into the first user set, and dividing other user terminals except the target user terminal in the cell into the second user set.

According to the method, the user terminals with the spectral efficiency larger than the corresponding first preset spectral efficiency threshold value are used as candidate user terminals of the first user set, the target user terminals are determined from the candidate user terminals according to the relative sizes among the spectral efficiencies of all the user terminals in the cell, the target user terminals are divided into the first user set, and the other user terminals are divided into the second user set, so that the spectral efficiency of the user terminals of the first user set is larger than that of the corresponding first preset spectral efficiency threshold value, and the relative sizes of the user terminals in the spectral efficiency of all the user terminals are considered, so that the division of the user sets is more reasonable.

In an alternative embodiment, the determining the target ue from the candidate ues according to the relative sizes between the spectrum efficiency of all ues in the cell includes:

sequencing the spectrum efficiency of all the user terminals in the cell from big to small, and determining the ranking of each candidate user terminal; and taking the candidate user terminals before the preset ranking as the target user terminals;

or, obtaining the relative deviation between the spectrum efficiency of each candidate user terminal and the maximum value of the spectrum efficiency of all user terminals in the cell; and using the candidate user terminals with the relative deviation smaller than the preset deviation as the target user terminals.

According to the method, the ranking of each candidate user terminal is determined by sequencing the spectrum efficiency of all user terminals in the cell from large to small, and if the ranking of the candidate user terminal is before the preset ranking, the spectrum efficiency of the candidate user terminal is relatively larger in the spectrum efficiency of all user terminals, and the candidate user terminal can be used as a target user terminal; or obtaining the relative deviation between the spectrum efficiency of each candidate user terminal and the maximum value of the spectrum efficiencies of all the user terminals in the cell, if the relative deviation between the spectrum efficiency of the candidate user terminal and the maximum spectrum efficiency in the cell is smaller than the preset deviation, indicating that the spectrum efficiency of the candidate user terminal is relatively close to the maximum spectrum efficiency in the cell, and the spectrum efficiency of the candidate user terminal is relatively larger in the spectrum efficiencies of all the user terminals, and can be used as the target user terminal. And selecting a proper mode according to the actual application scene to determine the user terminals in the first user set.

In an optional implementation manner, before the dividing the user terminals into the first user set and the second user set according to the spectrum efficiency of the user terminals in the cell, the method further includes:

according to the channel quality indication (Channel Quality Indicator, CQI for short) reported by each user terminal, obtaining the spectrum efficiency of each user terminal;

and adjusting the frequency spectrum efficiency of each user terminal based on the transmission type control character fed back by each user terminal.

According to the method, the frequency spectrum efficiency of each user terminal can be obtained according to the CQI reported by each user terminal, the real channel environment is always changed, the frequency spectrum efficiency obtained according to the CQI is greatly different from the real channel environment, and the frequency spectrum efficiency of the user terminal is adjusted in real time through the transmission type control character fed back by the user terminal, so that the power margin obtained after adjustment can more accurately reflect the real channel environment.

In an optional embodiment, the adjusting the spectrum efficiency of each user terminal based on the transmission class control character fed back by each user terminal includes:

and (3) up-regulating the current spectrum efficiency of each user terminal based on the ACK fed back by each user terminal, and/or down-regulating the current spectrum efficiency of each user terminal based on the NACK fed back by each user terminal.

According to the method, the spectrum efficiency capable of reflecting the real channel environment is obtained through adjustment through feedback of ACK and NACK of the user terminal, so that the user set divided based on the spectrum efficiency can reflect the real channel environment more.

In an alternative embodiment, the allocating the power headroom of the user terminals in the first user set to the user terminals in the second user set includes:

the power allowance of the user terminals in the first user set is evenly distributed to the user terminals in the second user set;

or, distributing the power allowance of the user terminals in the first user set to the user terminals in the second user set according to a preset distribution proportion;

or determining an allocation proportion according to the spectrum efficiency of each user terminal in the second user set, and allocating the power allowance of the user terminals in the first user set to the user terminals in the second user set according to the determined proportion.

According to the method, the power margin of the user terminals in the first user set is distributed to the user terminals in the second user set through different implementation modes, so that requirements in different application scenes are met.

In a second aspect, the present application further provides a network side device for adaptive downlink power allocation, including: a processor and a memory;

wherein the processor is configured to read a program in the memory and execute:

In an alternative embodiment, the processor is specifically configured to:

Each time ACK fed back by a user terminal is received, the current power allowance of the user terminal is adjusted upwards; and

and each time NACK fed back by the user terminal is received, the current power margin of the user terminal is adjusted down.

In an alternative embodiment, the processor is specifically configured to:

In an alternative embodiment, the processor is further configured to:

according to the CQI reported by each user terminal, obtaining the spectrum efficiency of each user terminal;

In an alternative embodiment, the processor is specifically configured to:

In a third aspect, the present application further provides a downlink power adaptive allocation apparatus, where the apparatus includes:

the user terminal dividing module is used for dividing the user terminals according to the frequency spectrum efficiency of the user terminals in the cell to obtain a first user set and a second user set, wherein the frequency spectrum efficiency of the user terminals in the first user set is larger than a corresponding first preset frequency spectrum efficiency threshold;

and the power headroom distribution module is used for distributing the power headroom of the user terminals in the first user set to the user terminals in the second user set.

In an alternative embodiment, the power headroom allocation module determines the power headroom of the user terminals in the first user set by:

In an optional embodiment, the power headroom allocation module determines the power headroom of each ue in the first user set according to the scheduling type of the ue, including:

In an optional embodiment, the determining, by the power headroom allocation module, the power headroom of each ue based on the received transmission class control character fed back by the ue includes:

In an optional implementation manner, the user terminal dividing module divides the user terminal according to the spectrum efficiency of the user terminal in the cell to obtain a first user set and a second user set, and includes:

In an alternative embodiment, the ue dividing module determines a target ue from the candidate ues according to a relative size between spectrum efficiency of all ues in the cell, including:

In an alternative embodiment, the apparatus further comprises: the spectral efficiency determination module may determine, based on the received signal,

the spectrum efficiency determining module is configured to, before the dividing the user terminal into a first user set and a second user set according to the spectrum efficiency of the user terminal in the cell,

In an optional embodiment, the spectrum efficiency determining module adjusts the spectrum efficiency of each user terminal based on the transmission class control character fed back by each user terminal, including:

In an alternative embodiment, the power headroom allocation module allocates the power headroom of the user terminals in the first user set to the user terminals in the second user set, including:

In a fourth aspect, the present application also provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method of the first aspect.

In addition, the technical effects caused by any implementation manner of the second aspect to the fourth aspect may refer to the technical effects caused by different implementation manners of the first aspect, which are not described herein.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it will be apparent that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art. In the drawings:

fig. 1 is a schematic diagram of an application scenario of a downlink power adaptive allocation method according to an embodiment of the present invention;

fig. 2 is a schematic flow chart of a downlink power adaptive allocation method according to an embodiment of the present invention;

fig. 3 is a schematic flow chart of another downlink power adaptive allocation method according to an embodiment of the present invention;

fig. 4 is a schematic flow chart of another downlink power adaptive allocation method according to an embodiment of the present invention;

Fig. 5 is a schematic flow chart of another downlink power adaptive allocation method according to an embodiment of the present invention;

fig. 6 is a schematic flow chart of another downlink power adaptive allocation method according to an embodiment of the present invention;

fig. 7 is a schematic flow chart of another downlink power adaptive allocation method according to an embodiment of the present invention;

fig. 8 is a schematic diagram of a network side device structure for adaptive downlink power allocation according to an embodiment of the present invention;

fig. 9 is a schematic diagram of a downlink power adaptive allocation apparatus according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Some words appearing hereinafter are explained:

1. in the embodiment of the invention, the term "and/or" describes the association relation of the association objects, which means that three relations can exist, for example, a and/or B can be expressed as follows: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.

2. The terms "first," "second," and the like in embodiments of the present disclosure are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It should be understood that these similar objects may be interchanged where appropriate.

3. The term "plurality" in the embodiments of the present application means two or more, and other adjectives are similar thereto.

In the communication process, the base station provides downlink power for the terminal and communicates with the terminal based on the downlink power. In the related art, a base station preferentially distributes downlink power to a part of areas by dividing a cell into different areas, so that the downlink power of user terminals in the areas is ensured, and the part of user terminals has better communication quality.

In view of this, the embodiments of the present invention provide a downlink power adaptive allocation method, apparatus, device, and storage medium, by using spectrum efficiency of all user terminals in a cell, dividing user terminals with better communication quality into a first user set, and dividing user terminals with worse communication quality into a second user set, where the spectrum efficiency of the user terminals reflects the quality of communication, so as to measure whether the service requirement of the user terminal is satisfied, and further reallocate surplus power headroom of the user terminals capable of satisfying the service requirement to user terminals incapable of satisfying the service requirement, so that on the premise of guaranteeing the basic service requirement of the user terminals in the first user set, surplus power headroom of the user terminals except for satisfying the service requirement in the first user set is allocated to the user terminals in the second user set as much as possible, so as to allocate more downlink power to the user terminals in the second user set, improve the communication quality of the user terminals in the second user set, ensure fairness of user terminal resource scheduling of the two user sets, and make allocation of downlink power more reasonable, and improve throughput of the whole cell system.

The present disclosure will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a schematic diagram of an application scenario of a downlink power adaptive allocation method provided by an embodiment of the present invention, in the application scenario, a network side device 100 provides downlink power for one or more user terminals (such as user terminals 101 to 104 shown in fig. 1) in a cell, and communicates with the user terminals based on the downlink power, and the network side device 100 divides the user terminals (such as user terminals 101 to 104 shown in fig. 1) according to spectrum efficiency of the user terminals (such as user terminals 101 to 104 shown in fig. 1) in the cell to obtain a first user set and a second user set; the network-side device 100 allocates the power headroom of the user terminals in the first user set (such as the user terminals 101 to 102 shown in fig. 1) to the user terminals in the second user set (such as the user terminals 103 to 104 shown in fig. 1).

The network side device is a device for providing a wireless communication function for a user terminal, including but not limited to: a gNB in 5G, a radio network controller (radio network controller, RNC), a Node B (NB), a base station controller (base station controller, BSC), a base transceiver station (base transceiver station, BTS), a home base station (e.g., home evolved nodeB, or home node B, HNB), a BaseBand Unit (BBU), a transmission point (transmitting and receiving point, TRP), a transmission point (transmitting point, TP), a mobile switching center, and the like.

The user terminal is equipment with a wireless communication function, can be deployed on land, and comprises an indoor or outdoor device, a handheld device or a vehicle-mounted device; can also be deployed on the water surface (such as ships, etc.); but may also be deployed in the air (e.g., on aircraft, balloon, satellite, etc.). The user terminal may be a mobile phone (mobile phone), a tablet computer (pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal, an augmented reality (augmented reality, AR) terminal, a wireless terminal in industrial control (industrial control), a wireless terminal in unmanned driving (self driving), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation security (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), etc.; but may also be various forms of UE, mobile Station (MS) or terminal equipment (terminal device).

The application scenario of fig. 1 is merely an example of an application scenario implementing an embodiment of the present application, and the embodiment of the present application is not limited to the application scenario described in fig. 1.

With respect to the above-mentioned scenario, embodiments of the present invention are described in further detail below with reference to the accompanying drawings.

Fig. 2 is a schematic flow chart of a downlink power adaptive allocation method provided by an embodiment of the present invention, which is applied to the network side device shown in fig. 1, as shown in fig. 2, and specifically includes the following steps:

step 201: and dividing the user terminals according to the frequency spectrum efficiency of the user terminals in the cell to obtain a first user set and a second user set.

Wherein the spectrum efficiency of the user terminals in the first user set is greater than a corresponding first preset spectrum efficiency threshold

In this embodiment, the spectrum efficiency corresponding to the communication quality is provided for the ue in the cell during the communication process, and the spectrum efficiency of the ue reflects the quality of the communication quality, so that whether the service requirement of the ue is satisfied can be measured. In order to allocate the power headroom of the user terminals capable of satisfying the service requirement to the user terminals incapable of satisfying the service requirement, the user terminals in the cell need to be divided according to the spectrum efficiency of each user terminal.

Based on this, the user terminals are divided according to the spectrum efficiency of the user terminals in the cell to obtain a first user set and a second user set, and the spectrum efficiency is divided into the first user set and the rest of the users are divided into the second user set by way of example, the spectrum efficiency is greater than a first preset spectrum efficiency threshold.

The first preset spectrum efficiency threshold may be obtained by correcting a preset initial spectrum efficiency threshold, for example, the initial spectrum efficiency threshold is corrected according to one or more of a service type of a user terminal, the number of user terminals and an interference condition between paired users, so as to obtain the first preset spectrum efficiency threshold. The first preset spectrum efficiency threshold is set more reasonably by correcting the preset initial spectrum efficiency threshold, so that the user set can be divided more reasonably.

In addition, according to the preset initial spectrum efficiency grade corresponding to each user terminal, based on the mapping relation between the grade and the threshold, determining an initial spectrum efficiency threshold corresponding to each user terminal, and correcting the initial spectrum efficiency threshold to obtain a first preset spectrum efficiency threshold; or, correcting the preset initial spectrum efficiency grade corresponding to each user terminal, and determining a first preset spectrum efficiency threshold value mapped by the corrected spectrum efficiency grade based on the mapping relation between the grade and the threshold value, thereby obtaining the first preset spectrum efficiency threshold value corresponding to each user terminal.

Step 202: and distributing the power allowance of the user terminals in the first user set to the user terminals in the second user set.

For example, according to the actual application scenario, the power margins of all the user terminals in the first user set can be allocated to the user terminals in the second user set;

or, distributing the power allowance of part of the user terminals in the first user set to all the user terminals in the second user set;

or, distributing the power allowance of all the user terminals in the first user set to part of the user terminals in the second user set;

alternatively, the power headroom of a part of the user terminals in the first user set is allocated to a part of the user terminals in the second user set, which is not specifically limited in this embodiment.

Optionally, the allocating the power headroom of the user terminals in the first user set to the user terminals in the second user set includes:

Illustratively, the power headroom of the user terminals in the first set of users is placed in a "power pool",

1) The power Σpow in the "power pool" is equally distributed to the user terminals in the second user set, e.g. the user terminals in the second user set comprise user terminals 1, 2 … … t, the power pow is distributed to the user terminals _poor ＝∑pow/t；

2) The power Σpow in the "power pool" is proportionally distributed to the user terminals in the second user set, for example, the user terminals in the second user set comprise the user terminals 1, 2 … … t, and the preset proportion is A1: a2: … …: at; allocating power to a user terminal 1

The user terminal 2 allocates power +.>

User terminal t allocates power +.>

3) Determining an allocation proportion according to the spectrum efficiency of each user terminal in the second user set, and allocating the power Σpow in the power pool to the user terminals in the second user set according to the determination, for example, the user terminals in the second user set comprise user terminals 1 and 2 … … t, and determining an allocation proportion B1 according to the spectrum efficiency of each user terminal or according to the deviation of the spectrum efficiency of each user terminal from a corresponding second preset spectrum efficiency threshold value: b2: … …: bt; allocating power to a user terminal 1

The user terminal 2 allocates power +.>

User terminal n allocates power +.>

Of course, the allocation proportion may also be determined according to the potential power headroom of each ue in the second ue set, the relative power of each ue (including different streams of one ue), the reference signal received power (Reference Signal Receiving Power, RSRP for short), the signal to interference plus noise ratio (Signal to Interference plus Noise Ratio, SINR for short), or other parameters/measurement values that can represent the relative relationship of power/spectral efficiency between ues in the second ue set, and specific determination modes will not be repeated here.

It can be understood that by obtaining the total power of all the user terminals in the cell, determining whether the network side device has a power headroom according to the total transmit power limit of the network side device and the total power of all the user terminals, if so, the power headroom of the network side device and the power headroom of the user terminals in the first user set can be placed in a "power pool" and distributed to the user terminals in the second user set.

Fig. 3 is a schematic flow chart of another downlink power adaptive allocation method according to an embodiment of the present invention, as shown in fig. 3, where the embodiment is based on the embodiment of fig. 2, and specifically includes the following steps:

step 301: and dividing the user terminals according to the frequency spectrum efficiency of the user terminals in the cell to obtain a first user set and a second user set.

Step 301 is implemented in the same manner as step 201 described above, and will not be described again here.

Step 302: and determining the power allowance of each user terminal in the first user set according to the scheduling type of the user terminal.

The services performed by different user terminals are different and correspond to different scheduling types, for example, the user terminal 1 is receiving small packet data, the corresponding scheduling type is continuous scheduling, the user terminal 1 is receiving large packet data, and the corresponding scheduling type is discontinuous scheduling.

The specific manner of determining the scheduling type of the user terminal is not limited in this embodiment, for example, the scheduling type of the user terminal is determined according to the scheduling information carried in the MAC header.

Step 303: and distributing the power allowance of the user terminals in the first user set to the user terminals in the second user set.

Step 303 is the same as the implementation of step 202 described above, and will not be described here again.

In addition, the channel environment is changed in real time, if the power margin is greatly different from the real channel environment in real time communication, the downlink power of the user terminal in the first user set is insufficient when the distributed power margin is excessive; or the downlink power of the user terminal in the second user set is insufficient when the allocated power margin is too small. In order to meet the requirement of the perception of the ue side for the channel environment that changes in real time, fig. 4 is a schematic flowchart of another downlink power adaptive allocation method according to an embodiment of the present invention, as shown in fig. 4, where the embodiment specifically includes the following steps based on the embodiment of fig. 3:

step 401: and dividing the user terminals according to the frequency spectrum efficiency of the user terminals in the cell to obtain a first user set and a second user set.

Step 401 is the same as the implementation of step 201 described above, and will not be described again here.

Step 402: and for each user terminal with the first user centralized scheduling type of continuous scheduling, determining the power allowance of each user terminal based on the received transmission class control character fed back by the user terminal.

Optionally, the determining the power headroom of each ue based on the received transmission class control character fed back by the ue includes:

The initial power headroom of the ue is preset for each ue after determining each ue that is scheduled continuously, and the preset initial power headroom of each ue may be the same or different, for example, the preset initial power headroom of each ue is 0. When ACK fed back by the user terminal is received once, the current channel environment of the user terminal is good, the current downlink power can meet the requirement of the user terminal, and the user terminal can provide more power headroom, so that the current power headroom of the user terminal is adjusted upwards, and more power headroom is distributed; and when the feedback NACK of the user terminal is received once, the current channel environment of the user terminal is poor, the current downlink power cannot meet the requirement of the user terminal, and the user terminal cannot provide more power headroom, so that the current power headroom of the user terminal is adjusted downwards, thereby ensuring the current QOS and meeting the requirement of user terminal side perception.

The specific values of the up-adjustment and the down-adjustment may be set according to the application scenario, and the values of the up-adjustment and the down-adjustment may be the same or different, which is not limited in this embodiment.

It may be understood that, determining the power headroom of the ue in each first ue set is performed after step 401 and before step 403, but each time the ACK/NACK fed back by the ue is received, the current power headroom of the ue is adjusted in real time before step 401, that is, the first ue set and the second ue set are not already divided during the real-time adjustment, so that each ue continuously scheduled in the cell is adjusted in real time.

Step 403: and distributing the power allowance of the user terminals in the first user set to the user terminals in the second user set.

Step 403 is implemented in the same manner as step 202, and will not be described again here.

In addition, for each ue that does not receive the feedback transmission control character, and thus cannot adjust the current power headroom according to the feedback transmission control character of the ue to obtain the power headroom of the ue, in order to solve this problem, fig. 5 shows another downlink power adaptive allocation method provided in this embodiment, as shown in fig. 5, which specifically includes the following steps based on the foregoing embodiment:

step 501: and dividing the user terminals according to the frequency spectrum efficiency of the user terminals in the cell to obtain a first user set and a second user set.

Step 501 is the same as the implementation of step 201 described above, and will not be described again here.

Step 502: and for each user terminal with discontinuous scheduling type in the first user set, determining the spectrum efficiency allowance of each user terminal with discontinuous scheduling in the first user set according to the spectrum efficiency of each user terminal and a corresponding second preset spectrum efficiency threshold.

Exemplary, the service performed by different ue is different, the corresponding second preset spectrum efficiency threshold is also different, the second preset spectrum efficiency threshold corresponding to the ue is determined, and according to the spectrum efficiency of each ue and the corresponding second preset spectrum efficiency threshold, the spectrum efficiency margin of each ue that is scheduled discontinuously in the first ue set, for example, the spectrum efficiency margin Δeff of ue n is determined _n ＝eff _n -TH _n Wherein eff _n For the spectral efficiency, TH, of the user terminal n _n And a second preset spectrum efficiency threshold corresponding to the user terminal n.

In addition, according to the first preset spectrum efficiency grade corresponding to each user terminal, a second preset spectrum efficiency threshold corresponding to each user terminal can be determined based on the mapping relation between the grade and the threshold.

Step 503: and determining the power headroom of each user terminal in the first user set in discontinuous scheduling according to the spectrum efficiency headroom of each user terminal in the first user set in discontinuous scheduling and a preset coefficient, wherein the preset coefficient is a mapping ratio between preset spectrum efficiency and power headroom.

After determining the residual amount of the spectrum efficiency of each user terminal, the residual amount of the spectrum efficiency needs to be converted into the residual amount of the power of each user terminal, based on which, by presetting a mapping ratio between the spectrum efficiency and the residual amount of the power, i.e. a preset coefficient, the residual amount of the power of each user terminal, for example, the residual amount pow of the power of the user terminal n, can be determined according to the residual amount of the spectrum efficiency of each user terminal and the ratio _n ＝△eff _n *C＝(eff _n -TH _n ) C. Wherein C is a preset coefficient. The specific value of the preset coefficient is not limited in this embodiment, and in one possible implementation, the default value of the preset coefficient is 5.

Step 504: and distributing the power allowance of the user terminals in the first user set to the user terminals in the second user set.

Step 504 is implemented in the same manner as step 202, and is not repeated here

Fig. 6 is a further downlink power adaptive allocation method provided in this embodiment, as shown in fig. 6, where the embodiment specifically includes the following steps based on the foregoing embodiment:

step 601: and determining candidate user terminals of the first user set, wherein the spectrum efficiency of each candidate user terminal is larger than a corresponding first preset spectrum efficiency threshold.

For all user terminals in the cell, the user terminals with the spectrum efficiency larger than the corresponding first preset spectrum efficiency threshold value are taken as candidate user terminals. The setting and correction of the first preset spectrum efficiency threshold may be referred to the above embodiments, and will not be described herein. .

Step 602: determining a target user terminal from the candidate user terminals according to the relative sizes among the spectrum efficiency of all the user terminals in the cell, dividing the target user terminal into the first user set, and dividing other user terminals except the target user terminal in the cell into the second user set.

If the user terminal with the spectral efficiency greater than the corresponding first preset spectral efficiency threshold is directly used as the user terminal in the first user set, the situation that although the spectral efficiency of some user terminals is greater than the corresponding first preset spectral efficiency threshold, the downlink power of all the terminals in the cell is still smaller may occur, and if the user terminal with the spectral efficiency greater than the corresponding first preset spectral efficiency threshold is used as the user terminal in the first user set and the power margin of the user terminal is allocated to other user terminals, the allocation is unreasonable.

Based on this, it is necessary to determine a target user terminal having a relatively large spectral efficiency from among candidate user terminals according to a relative size between spectral efficiencies of all user terminals within a cell, and divide the target user terminals into a first user set.

Optionally, the determining the target ue from the candidate ues according to the relative sizes between the spectrum efficiencies of all ues in the cell may be implemented by, but not limited to, the following two manners:

Illustratively, the spectrum efficiency of all the user terminals in the cell is ranked from large to small, the ranking of each candidate user terminal is determined, and if the ranking of the candidate user terminal is before the preset ranking, the spectrum efficiency of the candidate user terminal is relatively larger in the spectrum efficiency of all the user terminals, and the candidate user terminal can be used as the target user terminal. For example: the ranking of the candidate user terminals 1 is 5, the ranking of the candidate user terminal 2 is 20, the ranking of the candidate user terminal 3 is 74, the ranking of the candidate user terminal 4 is 33, the preset ranking is 50, and the ranking of the candidate user terminals 1, 2 and 4 is the target user terminals before the preset ranking.

Or obtaining the relative deviation between the spectrum efficiency of each candidate user terminal and the maximum value of the spectrum efficiencies of all the user terminals in the cell, if the relative deviation between the spectrum efficiency of the candidate user terminal and the maximum spectrum efficiency in the cell is smaller than the preset deviation, indicating that the spectrum efficiency of the candidate user terminal is relatively close to the maximum spectrum efficiency in the cell, and the spectrum efficiency of the candidate user terminal is relatively larger in the spectrum efficiencies of all the user terminals, and can be used as the target user terminal. For example: the maximum value of the spectrum efficiency of all user terminals in the cell is eff _max The preset deviation is eff _{ratio_TH} The spectral efficiency of the candidate user terminal 1 is eff ₁ Its relative deviation from the maximum of the spectral efficiency is

The spectral efficiency of the candidate user terminal 2 is eff ₂ Its relative deviation from the maximum of the spectral efficiency is +.>

The spectral efficiency of the candidate user terminal 3 is eff ₃ Its relative deviation from the maximum of the spectral efficiency is +.>

The spectral efficiency of the candidate user terminal 4 is eff ₄ Its relative deviation from the maximum of the spectral efficiency is

If eff _ratio1 ＜eff _{ratio_TH} ，eff _ratio2 ＜eff _{ratio_TH} ，eff _ratio3 ＞eff _{ratio_TH} ，eff _ratio4 ＜eff _{ratio_TH} Candidate user terminals 1, 2, 4 are set as target user terminals.

Through the two possible implementation manners, the user terminal in the first user set can be determined by selecting a proper manner according to the actual application scene.

Step 603: and distributing the power allowance of the user terminals in the first user set to the user terminals in the second user set.

Step 603 is the same as the implementation of step 202 described above, and will not be described again here.

According to the method, the user terminals with the spectral efficiency larger than the corresponding first preset spectral efficiency threshold value are used as candidate user terminals of the first user set, the target user terminals are determined from the candidate user terminals according to the relative sizes among the spectral efficiencies of all the user terminals in the cell, the target user terminals are divided into the first user set, and the other user terminals are divided into the second user set, so that the spectral efficiency of the user terminals of the first user set is larger than that of the corresponding first preset spectral efficiency threshold value, and is relatively larger in the spectral efficiency of all the user terminals, and the division of the user sets is more reasonable.

Fig. 7 is a diagram of another downlink power adaptive allocation method according to this embodiment, as shown in fig. 7, where the embodiment specifically includes the following steps based on the foregoing embodiment:

step 701: and obtaining the spectrum efficiency of each user terminal according to the CQI reported by each user terminal.

The user terminal reports CQI to the base station, the CQI is an information indication of channel quality and represents the quality of the current channel, and the value range is 0-31. And determining the frequency spectrum efficiency of CQI mapping reported by each user terminal according to the preset mapping relation between CQI and frequency spectrum efficiency.

Step 702: and adjusting the frequency spectrum efficiency of each user terminal based on the transmission type control character fed back by each user terminal.

In this embodiment, the real channel environment is always changing, and the spectrum efficiency obtained according to the CQI is greatly different from the real channel environment, based on which the spectrum efficiency needs to be dynamically adjusted according to the current channel environment.

Optionally, the current spectrum efficiency of each user terminal is adjusted up based on the ACK fed back by each user terminal, and/or the current spectrum efficiency of each user terminal is adjusted down based on the NACK fed back by each user terminal.

For example, whenever feedback ACK of the ue is received, it indicates that the current channel environment of the ue is better, the downlink power is rich, and the spectrum efficiency is higher, so that the spectrum efficiency is tuned based on the ACK; and receiving feedback NACK of the user terminal, indicating that the current channel environment of the user terminal is poor, the downlink power is insufficient, and the frequency spectrum efficiency is small, so that the frequency spectrum efficiency is modulated based on ACK. And (3) through feedback ACK and NACK of the user terminal, adjusting to obtain the spectrum efficiency capable of reflecting the real channel environment, so that the user set divided based on the adjusted spectrum efficiency can reflect the real channel environment more.

Step 703: and dividing the user terminals according to the frequency spectrum efficiency of the user terminals in the cell to obtain a first user set and a second user set.

Step 704: and distributing the power allowance of the user terminals in the first user set to the user terminals in the second user set.

Steps 703-704 are implemented in the same manner as steps 201-202 described above, and are not described here again.

According to the method, the frequency spectrum efficiency of each user terminal can be obtained according to the CQI reported by each user terminal, the real channel environment is always changed, the frequency spectrum efficiency obtained according to the CQI is greatly different from the real channel environment, and the frequency spectrum efficiency of the user terminal is adjusted in real time through the transmission type control character fed back by the user terminal, so that the frequency spectrum efficiency obtained after adjustment can reflect the real channel environment.

Based on the same inventive concept as the above-mentioned downlink power adaptive allocation method, fig. 8 is a schematic diagram of a network side device structure for providing downlink power adaptive allocation according to an embodiment of the present invention, as shown in fig. 8, where the network side device 800 includes: a processor 801 and a memory 802.

The processor 801 is responsible for managing the bus architecture and general processing, and the memory 802 may store data used by the processor 801 in performing operations.

A bus architecture may be comprised of any number of interconnected buses and bridges, and in particular one or more processors represented by the processor 801 and various circuits of memory, represented by the memory 802. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The processor 801 is responsible for managing the bus architecture and general processing, and the memory 802 may store data used by the processor 801 in performing operations.

The flow disclosed in the embodiments of the present invention may be applied to the processor 801 or implemented by the processor 801. In implementation, the steps of the signal processing flow may be performed by integrated logic circuits of hardware in the processor 801 or instructions in software. The processor 801 may be a general purpose processor, digital signal processor, application specific integrated circuit, field programmable gate array or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, and may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the invention. The general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present invention may be embodied directly in a hardware processor for execution, or in a combination of hardware and software modules in the processor for execution. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory 802, and the processor 801 reads information in the memory 802 and completes steps of the signal processing flow in combination with its hardware.

Wherein, the processor 801 is configured to read a program in the memory 802 and execute:

dividing the user terminals according to the frequency spectrum efficiency of the user terminals in the cell to obtain a first user set and a second user set;

Optionally, the processor 801 is specifically configured to:

when receiving acknowledgement character ACK fed back by a user terminal once, the current power margin of the user terminal is up-regulated; and

and each time a non-acknowledgement character NACK fed back by the user terminal is received, the current power margin of the user terminal is adjusted down.

Optionally, the processor 801 is specifically configured to:

Optionally, the processor 801 is further configured to:

Optionally, the processor 801 is specifically configured to:

Since the device is the device in the method in the embodiment of the present invention, and the principle of the device for solving the problem is similar to that of the method, the implementation of the device may refer to the implementation of the method, and the repetition is not repeated.

Based on the same inventive concept as the above-mentioned downlink power adaptive allocation method, fig. 9 is a schematic diagram of a downlink power adaptive allocation apparatus according to an embodiment of the present invention, where the downlink power adaptive allocation apparatus 900 includes: the user terminal dividing module 901 and the power headroom allocating module 902, optionally, further comprise a spectrum efficiency determining module 903.

A user terminal dividing module 901, configured to divide the user terminals according to the spectrum efficiency of the user terminals in the cell to obtain a first user set and a second user set;

a power headroom allocation module 902, configured to allocate a power headroom of a user terminal in the first user set to a user terminal in the second user set.

Optionally, the power headroom allocation module 902 determines the power headroom of the user terminals in the first user set by:

Optionally, the power headroom allocation module 902 determines the power headroom of each ue in the first user set according to the scheduling type of the ue, including:

Optionally, the power headroom allocation module 902 determines the power headroom of each ue based on the received transmission class control character fed back by the ue, including:

Optionally, the ue dividing module 901 divides the ue according to the spectrum efficiency of the ue in the cell to obtain a first ue set and a second ue set, including:

Optionally, the ue dividing module 901 determines a target ue from the candidate ues according to the relative sizes between the spectrum efficiency of all ues in the cell, including:

Optionally, the spectrum efficiency determining module 903 is configured to, before the dividing the ue into the first user set and the second user set according to the spectrum efficiency of the ue in the cell,

Optionally, the spectrum efficiency determining module 903 adjusts the spectrum efficiency of each ue based on the transmission class control character fed back by each ue, including:

Optionally, the power headroom allocation module 902 allocates the power headroom of the user terminals in the first user set to the user terminals in the second user set, including:

Since the device is the device in the method according to the embodiment of the present invention, and the principle of the device for solving the problem is similar to that of the method, the implementation of the device may refer to the implementation of the method, and the repetition is omitted.

The embodiment of the invention also provides a computer readable nonvolatile storage medium, on which a computer program is stored, which when executed by a processor, implements the steps of the downlink power adaptive allocation method according to the embodiment of the invention.

The present application is described above with reference to block diagrams and/or flowchart illustrations of methods, apparatus (systems) and/or computer program products according to embodiments of the application. It will be understood that one block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, and/or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer and/or other programmable data processing apparatus, create means for implementing the functions/acts specified in the block diagrams and/or flowchart block or blocks.

Accordingly, the present application may also be embodied in hardware and/or in software (including firmware, resident software, micro-code, etc.). Still further, the present application may take the form of a computer program product on a computer-usable or computer-readable storage medium having computer-usable or computer-readable program code embodied in the medium for use by or in connection with an instruction execution system. In the context of this application, a computer-usable or computer-readable medium may be any medium that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. The downlink power self-adaptive allocation method is characterized by comprising the following steps:

determining the power allowance of each user terminal in the first user set according to the scheduling type of the user terminal, and distributing the power allowance of the user terminal in the first user set to the user terminal in the second user set;

wherein the determining the power headroom of each user terminal in the first user set according to the scheduling type of the user terminal includes:

for each user terminal with the first user centralized scheduling type of continuous scheduling, determining the power allowance of each user terminal based on the received transmission type control character fed back by the user terminal;

For each user terminal of which the first user centralized scheduling type is discontinuous scheduling, determining the spectrum efficiency allowance of each user terminal of which the first user centralized is discontinuous scheduling according to the spectrum efficiency of each user terminal and a corresponding second preset spectrum efficiency threshold value, and determining the power allowance of each user terminal of which the first user centralized is discontinuous scheduling according to the spectrum efficiency allowance of each user terminal of which the first user centralized is discontinuous scheduling and a preset coefficient, wherein the preset coefficient is a mapping ratio between preset spectrum efficiency and the power allowance.

2. The method of claim 1, wherein the determining the power headroom of each user terminal based on the received transmission class control character of the user terminal feedback comprises:

3. The method of claim 1, wherein the dividing the user terminals into the first user set and the second user set according to the spectral efficiency of the user terminals in the cell comprises:

4. The method of claim 3, wherein said determining a target user terminal from said candidate user terminals based on the relative magnitudes between the spectral efficiency of all user terminals within said cell comprises:

5. The method according to any one of claims 1 to 4, further comprising, before said dividing said user terminals into a first user set and a second user set according to the spectral efficiency of the user terminals in said cell:

acquiring the frequency spectrum efficiency of each user terminal according to the channel quality indication CQI reported by each user terminal;

6. The method of claim 5, wherein the adjusting the spectral efficiency of each user terminal based on the transmission class control character fed back by each user terminal comprises:

7. The method according to any of claims 1-4, wherein said allocating the power headroom of the user terminals in the first user set to the user terminals in the second user set comprises:

8. A network side device for adaptive downlink power allocation, comprising: a processor and a memory;

wherein, the processor is specifically configured to:

9. The network-side device of claim 8, wherein the processor is specifically configured to:

10. The network-side device of claim 8, wherein the processor is specifically configured to:

11. The network-side device of claim 10, wherein the processor is specifically configured to:

12. The network-side device according to any one of claims 8 to 11, wherein the processor is further configured to:

13. The network-side device of claim 12, wherein the processor is specifically configured to:

14. The network side device according to any one of claims 8 to 11, wherein the processor is specifically configured to:

15. A downlink power adaptive allocation apparatus, comprising:

the power headroom distribution module is used for determining the power headroom of each user terminal in the first user set according to the scheduling type of the user terminal, and distributing the power headroom of the user terminal in the first user set to the user terminal in the second user set;

the power headroom distribution module is specifically configured to:

16. A computer-readable storage medium, on which a computer program is stored, characterized in that the program, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 7.