WO2019242524A1 - Beam allocation method and apparatus, base station, and computer readable storage medium - Google Patents

Abstract

A beam allocation method and apparatus, a base station, and a computer readable storage medium. The method comprises: determining an energy projection ratio of each composite beam among at least two preset composite beams (S210); selecting, from the at least two composite beams, at least one composite beam satisfying an activation threshold as an activated beam, and allocating the activated beam to a user terminal (S220).

Description

Beam allocation method, device, base station and computer-readable storage medium

This application claims priority from a Chinese patent application filed with the Chinese Patent Office on June 19, 2018 with application number 201810632040.6, the entire contents of which are incorporated herein by reference.

Technical field

Embodiments of the present disclosure relate to the field of communications, and for example, to a beam allocation method, device, base station, and computer-readable storage medium.

Background technique

In a Massive Multiple-Input Multiple-Output (MIMO) system, the cell is divided into multiple pre-formed beams to cover, and the active beam is selected for the terminal according to a certain strategy. Send data to the terminal. Terminals with no intersection of activation beams can spatially multiplex the same time-frequency resources, thereby increasing network capacity. However, if the activation beam selected for the terminal is not accurate, it will affect the performance of space division multiplexing and affect the cell downlink Traffic. Beam allocation strategies in related technologies are usually activated first and then synthesized, which will cause inaccurate beam activation and inaccurate conversion of the inner loop modulation and coding strategy (MCS), affecting the downstream traffic of the cell. .

Summary of the Invention

Embodiments of the present disclosure provide a beam allocation method, device, base station, and computer-readable storage medium, which are intended to at least solve the problem of inaccurate beam activation in related technologies.

An embodiment of the present disclosure provides a beam allocation method, including:

Determining an energy projection ratio of each of the preset at least two synthetic beams;

Selecting, from the synthetic beams, at least one synthetic beam that meets an activation threshold as an activation beam, and assigning the activation beam to a user terminal;

Among them, the activation threshold is a limit value of the energy projection ratio of the composite beam.

An embodiment of the present disclosure further provides a beam allocation apparatus, including:

A projection determining module, configured to determine an energy projection ratio of each of the at least two synthetic beams preset;

A beam activation module configured to select, from the synthetic beams, at least one synthetic beam that meets an activation threshold as an activation beam, and allocate the activation beam to a user terminal;

The activation threshold is a limit value of an energy projection ratio of the composite beam.

An embodiment of the present disclosure further provides a base station including a processor, a memory, and a communication bus;

The communication bus is configured to implement connection and communication between the processor and the memory;

The processor is configured to execute a computer program stored in the memory to implement the above-mentioned beam allocation method.

An embodiment of the present disclosure further provides a computer-readable storage medium. The computer-readable storage medium stores one or more computer programs, and the computer programs can be executed by one or more processors to implement the foregoing methods.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of a base station of a Massive MIMO system;

2 is a flowchart of a beam allocation method according to an embodiment of the present disclosure;

3 is a flowchart of another beam allocation method according to an embodiment of the present disclosure;

FIG. 4 is a schematic structural diagram of a beam allocation apparatus according to an embodiment of the present disclosure; FIG.

FIG. 5 is a schematic structural diagram of a base station according to an embodiment of the present disclosure.

detailed description

In a Massive MIMO system, please refer to FIG. 1, which includes two hardware components, namely, a physical layer (PHY) module and a media access control sub-layer (Control, Media Access Control, CMAC) module. PHY refers to the physical layer, the lowest layer of Long Term Evolution (LTE) (the fourth generation mobile phone mobile communication standard, commonly known as 4G), and generally refers to the chip that interfaces with external signals. CMAC refers to the media access control sublayer. In a Massive MIMO system, the PHY module reports the beam energy, the CMAC module performs beam activation and the inner MCS loss based on the reported beam energy, and sends the activation result to the PHY, and the PHY synthesizes the beam to the user equipment ( User (Equipment, UE) to communicate, that is, activate first and then synthesize. This will cause inaccurate activation of the beam and inaccurate conversion of the inner loop, affecting the downlink traffic of the cell. In the embodiment of the present disclosure, the PHY module is responsible for reporting the beam, and reports the energy projection ratio of each synthesized beam synthesized by the channel sounding reference signal (SRS) to the CMAC module; the CMAC module is based on the reported by the PHY module. The energy projection ratio of the composite beam is used to activate the beam and convert the MCS of the inner loop. Then send the synthesized beam index to the PHY, so the final beam energy of the PHY is the energy used to activate the beam and the MCS of the inner loop.

The embodiments of the present disclosure will be further described in detail in the following through implementation and the accompanying drawings. The embodiments described herein are only used to explain the disclosure, and are not intended to limit the disclosure.

Example one

Please refer to FIG. 2, which is a flowchart of a beam allocation method according to an embodiment of the present disclosure, including:

S210. Determine an energy projection ratio of each of the preset at least two synthetic beams.

S220. From at least two synthetic beams, select at least one synthetic beam that satisfies an activation threshold as an activation beam, and allocate the activation beam to a user terminal.

In one embodiment, the activation threshold is a limit value of the energy projection ratio of the composite beam.

In some embodiments, determining a preset energy projection ratio of each of the at least two synthetic beams may include:

Determine the energy projection of each synthetic beam according to the two polarization direction covariance matrices of the two antenna vertical plates and the weight of each synthetic beam; determine the energy projection of each synthetic beam relative to the cell-specific reference signal -specific Reference Signal (CRS) broadcasting percentage, to obtain the energy projection ratio of each synthetic beam. Among them, the antenna usually includes two, each antenna has two polarization directions, that is, there are two pairs of polarization direction covariance matrices. Assuming a total of 255 synthetic beams in this embodiment, then there are 255 synthetic beam weights, respectively W ^CRS = [w0, w1, ... w255], where w255 is a supplementary value and fills the last bit of the covariance matrix . The 255 synthetic beam weights are arranged according to the number of single beams synthesized from small to large (1 to 8).

The embodiment of the present disclosure only exemplifies the case where the number of synthetic beams is 255, and it is not limited that the number of synthetic beams must be 255. The corresponding design may be performed according to the actual system, or may be less than 255, or more than 255. The implementation of the present disclosure Examples do not limit it.

In some embodiments, determining the energy projection of each synthetic beam according to the two polarization direction covariance matrices of each of the two antenna vertical plates and the weight of each synthetic beam may include:

和

其中，

Extract two polarization direction covariance matrices according to the two antenna vertical plates

with

among them,

和

分别表示两个天线上的协方差矩阵，各自包括两个极化方向的协方差矩阵，也就是说，实际上有四个协方差矩阵，分别为

和

with

Representing the covariance matrices on the two antennas, each including the covariance matrices of two polarization directions, that is, there are actually four covariance matrices, which are

with

此处的平均值为算数平均值。 Combine the extracted covariance matrices to obtain the average value to obtain the average covariance matrix

The average value here is the arithmetic mean.

其中，M ^CRS-1是最大的合成波束的编号，在本实施例中也就是255。到此，就已经计算出了每个波束的能量投影的大小，然后，再根据这255个合成波束的能量投影相对于CRS广播权的百分比，就可以得到每个合成波束的能量投影占比，具体算法如下：

得到能量投影占比之后，PHY模块就可以将能量投影占比上报给CMAC模块。 Calculate the energy projection of each synthetic beam based on the average covariance matrix and the weight of each synthetic beam

Among them, M ^CRS -1 is the number of the largest synthetic beam, which is 255 in this embodiment. At this point, the size of the energy projection of each beam has been calculated. Then, according to the percentage of the energy projection of these 255 synthetic beams relative to the CRS broadcast right, the energy projection ratio of each synthetic beam can be obtained. The specific algorithm is as follows:

After obtaining the energy projection proportion, the PHY module can report the energy projection proportion to the CMAC module.

In some embodiments, selecting, from at least two synthetic beams, at least one synthetic beam that satisfies an activation threshold as an activation beam may include: determining, from at least two synthetic beams, a synthetic beam that satisfies an activation threshold; Among the synthetic beams, the synthetic beam with the smallest number of beams is selected as the activation beam. Among them, the activation threshold is a limited value of the energy projection size of the synthetic beam, which is usually compared with the largest energy in the synthetic beam, that is, the 255th synthetic beam, which is obtained by combining all the single beams. The value is also the highest. The activation threshold is characterized by a certain ratio of the maximum energy value, such as 85%. In a composite beam with an energy projection size greater than or equal to 85%, it can be considered that it meets the activation threshold and can be activated. Since the energy projection ratio is obtained as a percentage of the size of the energy projection relative to the CRS, the activation threshold can also be understood as the limit value of the energy projection ratio of the composite beam.

However, not all synthetic beams that meet the activation threshold need to be activated. Based on resource utilization considerations, under the premise of meeting the activation threshold requirements, the lower the number of single beams occupied by the synthetic beam, the higher the efficiency. In other words, in the When selecting a synthetic beam, a synthetic beam with the smallest number of beams that meets the activation threshold is usually selected as the activation beam for activation. For example, at this time, there are 8 groups of synthetic beams that meet the activation threshold, and the number of single beams in the 8 groups is 3, 3, 4, 5, 6, 7, 7, and 8 respectively. The composite beam is the active beam.

In addition, in some embodiments, selecting the synthetic beam with the smallest number of beams as the activated beam from the synthetic beams that satisfy the activation threshold may further include: when the synthetic beam with the smallest number of beams includes at least two, selecting an energy projection ratio The highest synthetic beam is used as the activation beam. There may also be multiple synthetic beams with the smallest number of beams. When there are multiple synthetic beams with the smallest number of beams, since the number of beams is the same, then you can start from the perspective of energy size, that is, the proportion of energy projection among them The highest synthetic beam is activated as the activation beam, which can ensure the communication quality as much as possible.

In some embodiments, it may further include:

Obtain the user terminal is currently wideband filtering the signal to interference plus noise ratio, SINR, a transmission scheme SINR value of _{the CQI;} The energy beam projector share each synthesis, SINR and _{the CQI,} MCS determining breakage of the inner ring.

In an embodiment, determining the MCS impairment of the inner loop according to the energy projection ratio of each synthetic beam and the SINR _CQI may include:

Calculate the signal power Ps = Pall_UE (ActSet_inx) according to the energy projection ratio of each composite beam; Pall_UE is the energy projection ratio of each composite beam; AckSet_inx is the bitmap index of the bitmap corresponding to the active beam of the user terminal;

Calculate space division multiplexing interference I _SDMA and channel mismatch loss I _ChanLoss according to the projected energy share of each synthetic beam; where I _SDMA = ∑ _k ∈ _UeSet Pall_UE (SdmaSet _k _inx), where UeSet is allocated to the user terminal empty pairing the terminal, SdmaSet _k _inx beam is activated bitmap index corresponding to each pair of _{terminals; I ChanLoss = Pall_UE (end)} -Pall_UE (AckSet_inx), wherein the end corresponding to the maximum beam synthesized bitmap index;

Obtaining zero-capacity loss through the user terminal's home horizontal beam and home vertical beam

折算

其中，α和β各自为可配参数； According to space division multiplexing interference I _SDMA , channel mismatch loss I _ChanLoss and zero trapping capability loss

Translate

Among them, α and β are each configurable parameters;

The MCS of the inner ring is obtained through the SINR ' _pair . The calculated inner loop MCS loss is more accurate, which can further improve the downlink traffic of the cell.

This embodiment proposes to replace the single-beam summation scheme in the related technology by the SRS synthetic beam scheme, that is, the PHY module directly reports the energy projection proportion of the 255 synthetic beams synthesized by the SRS, and the CMAC module according to the 255 synthetic beams reported by the PHY module The proportion of the energy projection is used to activate the beam and convert the inner MCS. In this way, both the beam activation and the inner loop conversion use the final synthesized beam energy. Compared to the single-beam summation scheme in the related technology, the scheme in the embodiment of the present disclosure is synthesized first and then activated, which is more accurate and real, and thus improves air separation. The multiplexing performance improves the downlink traffic of the cell.

Example two

Please refer to FIG. 3. FIG. 3 is a flowchart of another beam allocation method according to an embodiment of the present disclosure, including:

S301. Calculation of energy projection ratio.

(1) Preset beam.

Preset 255 synthetic beam weights W ^CRS = [w0, w1, ... w255], and the 255 synthetic beams are arranged according to the number of beams from small to large (1 to 8).

(2) Extraction of covariance matrix.

和

即： Extract the covariance matrix of the two polarization directions according to the two vertical plates of the antenna

with

which is:

n = 0,1

(3) Combine and average.

Combine the extracted results to average:

The energy projection is calculated by combining the averaged covariance matrix and 255 synthetic beam weights.

(4) Beam energy projection.

(5) Calculation of energy projection ratio.

Calculate the percentage of the energy projection of the 255 synthetic beams relative to the CRS broadcast right, and report the energy projection ratio to the CMAC. The calculation method is described as follows:

m = 0,1,2, ... M ^CRS -1

Where M ^CRS -1 is equal to 255.

S302. Generate an activation beam.

(1) The PHY reports the energy projection ratio of 255 active beam bitmaps to the CMAC.

(2) According to the synthetic beam energy projection ratio table reported by the PHY, the CMAC finds the composite beam set An * that has the smallest number of activated beams and meets the activation threshold in the order of the number of activated beams from small to large.

(3) Find the composite beam combination with the highest active beam energy ratio from An * as the active beam.

S303. The inner ring MCS is damaged.

In this embodiment, Pall_UE indicates the proportion of 255 energy projections reported by the current UE.

(1) Acquire the wideband filtering SINR value of user u's current transmission scheme as SINR _CQI (linear value).

(2) Calculate the signal power Ps = Pall_UE (ActSet_inx); where ActSet_inx is the bitmap index corresponding to the active beam set of user u.

(3) Calculate the space division multiplexing interference I _SDMA = Σ _k ∈ _UeSet Pall_UE (SdmaSet _k _inx); where UeSet is the UE corresponding to the user u space allocation pair, and SdmaSet _k _inx is the bitmap index corresponding to the active beam set of user k.

(4) Calculate channel mismatch loss I _ChannLoss = Pall_UE (end) -Pall_UE (AckSet_inx); where end is 255.

(5) Obtaining the nulling capability loss through the user's home horizontal beam and home vertical beam lookup table

(6) SINR ' _pair of inner ring after conversion:

Among them, α is a configurable parameter, and β is a configurable parameter.

(7) The channel quality indicator (CQI) is mapped through the SINR ' _pair , the corresponding spectral efficiency (SE) is obtained through the CQI mapping, and then the inner-loop MCS is obtained through the SE mapping.

Example three

This embodiment provides a specific application of the beam allocation method. It is assumed that a single beam summation method has an active beam energy ratio that exceeds an activation threshold, and a synthetic beam method detection does not reach the threshold.

The parameter configuration is shown in the following table:

Synthetic beam function switch turn on Active beam energy ratio 85% Whether beam overlap can be spatially separated no

1. Cell 1 has 4 UEs distributed near-to-medium and far-off to perform airspace separation, which are UE0 to UE3.

2. Obtain the energy projection ratio of the remote beam UE3's synthetic beam method, and compare it with the single beam summation method. Through the beam allocation method in the above embodiment, the same UE3 can be measured. At the same far point position, the ratio of the energy projection of the synthetic beam is lower than the energy ratio of the single-beam summation. The energy ratio of the single-beam summation method has reached At an 85% threshold, these beams of UE3 will be activated. It should not be paired with UE3 for air separation, but paired with other UEs for air separation. The inter-stream interference is severe, which affects the cell's air division multiplexing performance. However, the energy projection ratio of the synthetic beam method does not reach the 85% threshold. These beams of UE3 will not be activated. It can be found through step two that more beams can be activated to reach the activation threshold. However, the more active beams, the greater the probability of beam overlap with other UEs. Since the UEs with overlapping beams cannot be space-divided, the probability of empty allocation pairs becomes smaller, inter-stream interference is also reduced, and cell space-division is complex. The performance is improved, and the downlink traffic of the cell is improved.

It is assumed that the activation beam energy ratio of the single beam summation method does not reach the activation threshold, and the detection of the synthetic beam method has exceeded the threshold.

The parameter configuration is shown in the following table:

Synthetic beam function switch turn on Active beam energy ratio 85% Whether beam overlap can be spatially separated no

1. Cell1 has 4 UEs distributed near-to-medium-distance for downlink air separation, which are UE0 to UE3.

2. Obtain the energy projection ratio of the synthetic beam method of the midpoint UE2, and compare the energy ratio of the single beam summation method. Through the beam allocation method in the above embodiment, the same UE2 can be measured. At the same midpoint position, the ratio of the energy projection of the synthetic beam is higher than that of the single-beam summation. The energy ratio of the single-beam summation method does not reach 85. % Threshold, none of these beams of the UE will be activated. It can be found through the beam allocation method in the above embodiment that more beam activations can be selected to reach the activation threshold. Then the more active beams, the greater the probability of beam overlap with other UEs (the UEs with overlapping beams cannot be air-divided), so the probability of empty allocation pairs becomes smaller, and UE2 should be paired with air-division, but not with other The UE is paired with space division and affects the cell space division multiplexing performance. The energy ratio of the synthetic beam method has reached the threshold of 85%. These beams of UE2 will be activated and can be paired with other UEs for air separation. The cell space division multiplexing performance is improved, and the cell downlink traffic is improved.

The composite beam method can make the MCS inner loop damage more accurate and the cell downlink traffic can be improved.

The parameter configuration is shown in the following table:

Synthetic beam function switch turn on Active beam energy ratio 85% Whether beam overlap can be spatially separated no

1. Cell1 has 3 UEs distributed near-to-medium-distance for downlink air separation, which are UE0 to UE2.

2. According to the beam allocation method in the foregoing embodiment, it can be obtained that:

UE1 activates beam 0,1, and the corresponding energy projection is [1,0,0,0,0,0];

The paired UE2 activates beams 2, 3, and the corresponding energy projection is [0, 0, 0, 0, 0];

The paired UE3 activates beams 4,5,6, and the corresponding energy projection is [0,0,0,0,1,1,0]; where 0 represents an inactive single beam and 1 represents an activated single beam.

Single beam summing method:

表示用户UE1在波束i的投影能量，i＝0:7。 Report 16 projection energies of UE1, merge 8 projection energies in two dimensions,

Represents the projection energy of user UE1 on beam i, i = 0: 7.

The synthetic beam method can be obtained through step three:

Report 255 projection energy Pall_UE of UE1.

bin2dec ('11000000') = 192;

bin2dec ('00110000') = 48, bin2dec ('00001110') = 14;

bin2dec ('11111111') = 255.

The signal power P _s = Pall_UE (192).

Space division multiplexing interference I _SDMA = Pall_UE (48) + Pall_UE (14).

Channel mismatch loss I _ChannLoss = Pall_UE (255) -Pall_UE (192).

3. The internal loop damage information of the midpoint UE2 is obtained through the beam allocation method in the foregoing embodiment. The internal loop damage of the synthetic beam will be smaller than that of the single beam summing method. It is 5, the single-loop summation method finally schedules the inner loop MCS to be 1 or 2, and the final scheduled inner loop MCS rises, which improves the cell space division multiplexing performance and the cell downlink traffic.

Example 4

Please refer to FIG. 4. FIG. 4 is a schematic diagram of a composition of a beam allocation apparatus according to this embodiment, including:

The projection determination module 41 is configured to determine an energy projection ratio of each of the preset at least two synthetic beams;

The beam activation module 42 is configured to select, from at least two synthetic beams, at least one synthetic beam that meets an activation threshold as an activation beam, and allocate the activation beam to a user terminal.

In one embodiment, the activation threshold is a limit value of the energy projection ratio of the composite beam.

In some embodiments, the projection determining module 41 is configured to determine the energy projection of each composite beam according to the two polarization direction covariance matrices of the two antenna vertical plates and the weight of each composite beam; The percentage of the energy projection of each composite beam relative to the CRS broadcast right of the cell-specific reference signal, to obtain the energy projection ratio of each composite beam. Among them, the antenna usually includes two, each antenna has two polarization directions, that is, there are two pairs of polarization direction covariance matrices. Assuming a total of 255 synthetic beams in this embodiment, then there are 255 synthetic beam weights, respectively W ^CRS = [w0, w1, ... w255], where w255 is a supplementary value and fills the last bit of the covariance matrix . The 255 synthetic beam weights are arranged according to the number of single beams synthesized from small to large (1 to 8).

The embodiment of the present disclosure only exemplifies the case where the number of synthetic beams is 255, and it is not limited that the number of synthetic beams must be 255. The corresponding design can be performed according to the actual system, or it can be less than 255, or more than 255. Examples do not limit it.

In some embodiments, determining the energy projection of each synthetic beam according to the two polarization direction covariance matrices of each of the two antenna vertical plates and the weight of each synthetic beam may include:

和

其中， Extract two polarization direction covariance matrices according to the two antenna vertical plates

with

among them,

和

分别表示两个天线上的协方差矩阵，各自包括两个极化方向的协方差矩阵，也就是说，实际上有四个协方差矩阵，分别为

和

with

Representing the covariance matrices on the two antennas, each including the covariance matrices of two polarization directions, that is, there are actually four covariance matrices, which are

with

此处的平均值为算数平均值。 Combine the extracted covariance matrices to obtain the average value to obtain the average covariance matrix

The average value here is the arithmetic mean.

其中，M ^CRS-1是最大的合成波束的编号，在本实施例中也就是255。到此，就已经计算出了每个波束的能量 投影的大小，然后，再根据这255个合成波束的能量投影相对于CRS广播权的百分比，就可以得到每个合成波束的能量投影占比，具体算法如下：

得到能量投影占比之后，PHY模块就可以将能量投影占比上报给CMAC模块。 Calculate the energy projection of each synthetic beam based on the average covariance matrix and the weight of each synthetic beam

Among them, M ^CRS -1 is the number of the largest synthetic beam, which is 255 in this embodiment. At this point, the size of the energy projection of each beam has been calculated. Then, according to the percentage of the energy projection of these 255 synthetic beams relative to the CRS broadcast right, the energy projection ratio of each synthetic beam can be obtained. The specific algorithm is as follows:

After obtaining the energy projection proportion, the PHY module can report the energy projection proportion to the CMAC module.

In some embodiments, the beam activation module 42 is configured to determine, from at least two synthetic beams, a synthetic beam that satisfies an activation threshold; and from among the synthetic beams that meet the activation threshold, select a synthetic beam with the smallest number of beams as the activation beam . Among them, the activation threshold is a limited value of the energy projection size of the synthetic beam, which is usually compared with the largest energy in the synthetic beam, that is, the 255th synthetic beam, which is obtained by combining all the single beams. The value is also the highest. The activation threshold is characterized by a certain ratio of the maximum energy value, such as 85%. In a composite beam with an energy projection size greater than or equal to 85%, it can be considered that it meets the activation threshold and can be activated.

However, not all synthetic beams that meet the activation threshold need to be activated. Based on resource utilization considerations, under the premise of meeting the activation threshold requirements, the lower the number of single beams occupied by the synthetic beam, the higher the efficiency. In other words, in the When selecting a synthetic beam, a synthetic beam with the smallest number of beams that meets the activation threshold is usually selected as the activation beam for activation. For example, at this time, there are 8 groups of synthetic beams that meet the activation threshold, and the number of single beams in the 8 groups is 3, 3, 4, 5, 6, 7, 7, and 8 respectively. The composite beam is the active beam.

In addition, in some embodiments, selecting the synthetic beam with the smallest number of beams as the activated beam from the synthetic beams that satisfy the activation threshold may further include: when the synthetic beam with the smallest number of beams includes at least two, selecting an energy projection ratio The highest synthetic beam is used as the activation beam. There may also be multiple synthetic beams with the smallest number of beams. When there are multiple synthetic beams with the smallest number of beams, since the number of beams is the same, then you can start from the perspective of the energy size, that is, the energy projection ratio. The highest synthetic beam is activated as the activation beam, which can ensure the communication quality as much as possible.

In some embodiments, it may further include an inner-loop MCS determination module 43 configured to:

Obtain the user terminal is currently wideband filtering the signal to interference plus noise ratio, SINR, a transmission scheme SINR value of _{the CQI;} The energy beam projector share each synthesis, SINR and _{the CQI,} MCS determining breakage of the inner ring.

In an embodiment, the inner-loop MCS determination module 43 is configured to:

Calculate the signal power Ps = Pall_UE (ActSet_inx) according to the energy projection ratio of each composite beam; Pall_UE is the energy projection ratio of each composite beam; AckSet_inx is the bitmap index of the bitmap corresponding to the active beam of the user terminal;

Calculate space division multiplexing interference I _SDMA and channel mismatch loss I _ChanLoss according to the projected energy share of each synthetic beam; where I _SDMA = ∑ _k ∈ _UeSet Pall_UE (SdmaSet _k _inx), where UeSet is allocated to the user terminal empty pairing the terminal, SdmaSet _k _inx beam is activated bitmap index corresponding to each pair of _{terminals; I ChanLoss = Pall_UE (end)} -Pall_UE (AckSet_inx), wherein the end corresponding to the maximum beam synthesized bitmap index;

Obtaining zero-capacity loss through the user terminal's home horizontal beam and home vertical beam

折算

其中，α和β各自为可配参数； According to space division multiplexing interference I _SDMA , channel mismatch loss I _ChanLoss and zero trapping capability loss

Translate

Among them, α and β are each configurable parameters;

The MCS of the inner ring is obtained through the SINR ' _pair . The calculated inner loop MCS loss is more accurate, which can further improve the downlink traffic of the cell.

This embodiment proposes to replace the single-beam summation scheme in the related technology by the SRS synthetic beam scheme, that is, the PHY module directly reports the energy projection proportion of the 255 synthetic beams synthesized by the SRS, and the CMAC module according to the 255 synthetic beams reported by the PHY module The proportion of the energy projection is used to activate the beam and convert the inner MCS. In this way, both the beam activation and the inner loop conversion use the final synthesized beam energy. Compared to the single-beam summation scheme in the related technology, the scheme in the embodiment of the present disclosure is synthesized first and then activated, which is more accurate and real, and thus improves air separation The multiplexing performance improves the downlink traffic of the cell.

Example 5

Please refer to FIG. 5. FIG. 5 is a schematic diagram of a base station according to this embodiment, including a processor 51, a memory 52, and a communication bus 53.

The communication bus 53 is configured to implement connection and communication between the processor 51 and the memory 52;

The processor 51 is configured to execute a computer program stored in the memory 52 to implement the beam allocation method in one or more embodiments of the present disclosure, and details are not described herein again.

Example Six

This embodiment provides a computer-readable storage medium. The computer-readable storage medium stores one or more computer programs, and the computer programs can be executed by one or more processors to implement the foregoing one or more embodiments. The beam allocation method in this paper is not repeated here.

Obviously, those skilled in the art should understand that the above-mentioned modules or steps of the present disclosure may be implemented by a general-purpose computing device, and they may be centralized on a single computing device or distributed on a network composed of multiple computing devices. Alternatively, they can be implemented with program code executable by a computing device, so that they can be stored in a storage medium (Read-Only Memory (ROM) / Random Access Memory (RAM), Magnetic disks, optical disks) are performed by a computing device, and in some cases, the steps shown or described can be performed in a different order than here, or they can be made into one or more integrated circuit modules, respectively, Or multiple modules or steps in them are made into a single integrated circuit module for implementation. Therefore, the present disclosure is not limited to any specific combination of hardware and software.

Embodiments of the present disclosure provide a beam allocation method, device, base station, and computer-readable storage medium. By determining a preset energy projection ratio of each of the at least two synthetic beams, selecting from the synthetic beams, At least one synthetic beam that satisfies the activation threshold is used as the activation beam and is allocated to the user terminal, so that each of the single beams is synthesized in advance to form at least two synthetic beams, and then the energy projection ratio of these at least two synthetic beams is directly calculated, so that The accuracy of beam activation is improved, and the downlink traffic of the cell is further improved.

In addition, the embodiment of the present disclosure also determines the inner ring MCS damage based on the composite beam, which improves the accuracy of the inner ring MCS damage calculation, and further improves the downlink traffic of the cell.

Claims (12)

A beam allocation method includes: Determining an energy projection ratio of each of the preset at least two synthetic beams; Selecting, from the at least two synthetic beams, at least one synthetic beam that satisfies an activation threshold as an activation beam, and assigning the activation beam to a user terminal; The activation threshold is a limit value of an energy projection ratio of the composite beam. The method according to claim 1, wherein determining the energy projection ratio of each of the at least two synthetic beams preset comprises: Determine the energy projection of each composite beam according to the two polarization direction covariance matrices of the two antenna vertical plates and the weight of each composite beam; Determine the percentage of the energy projection of each synthetic beam with respect to the cell-specific reference signal CRS broadcast right, and obtain the energy projection ratio of each synthetic beam. The method according to claim 2, wherein determining the energy projection of each synthetic beam according to the two polarization direction covariance matrices of the two antenna vertical plates and the weight of each synthetic beam comprises: Extract two polarization direction covariance matrices according to the two antenna vertical plates

with

among them,

Combine the extracted covariance matrices to obtain the average value to obtain the average covariance matrix

Calculate the energy projection of each synthetic beam according to the average covariance matrix and the weight of each synthetic beam

Wherein, w ^CRS (m) represents the weight of the composite beam m, and M ^CRS -1 is the largest number of the composite beam. The method according to any one of claims 1 to 3, wherein the selecting, from the at least two synthetic beams, at least one synthetic beam that satisfies an activation threshold as an activation beam comprises: Determine, from the at least two synthetic beams, a synthetic beam that satisfies the activation threshold; From the synthetic beams satisfying the activation threshold, a synthetic beam having a smallest number of beams is selected as the activation beam. The method according to claim 4, wherein the selecting, from the synthetic beams satisfying the activation threshold, the smallest number of synthetic beams as the activation beam comprises: When the minimum number of the composite beams includes at least two, the composite beam with the highest energy projection ratio is selected as the activation beam. The method according to any one of claims 1-3, further comprising: Acquiring a value of a wideband filtered signal and interference plus noise ratio SINR under a current transmission scheme of the user terminal as a SINR _CQI ; Determine the MCS impairment of the inner loop modulation and coding strategy according to the energy projection ratio of each synthetic beam and the SINR _CQI . The method according to claim 6, wherein determining the MCS impairment of the inner loop according to the energy share of each synthetic beam and the SINR _CQI comprises: Calculate the signal power Ps = Pall_UE (ActSet_inx) according to the energy projection ratio of each synthetic beam; where Pall_UE is the energy projection ratio of each synthetic beam; and AckSet_inx is the bit corresponding to the active beam of the user terminal Map bitmap index; Calculate space division multiplexing interference I _SDMA and channel mismatch loss I _ChanLoss according to the projected energy share of each composite beam; where I _SDMA = Σ _k ∈ _UeSet Pall_UE (SdmaSet _k _inx), and the UeSet said user terminal to the air distribution terminal pairing, SdmaSet _k _inx beam is activated bitmap index corresponding to each pair of _{terminals; I ChanLoss = Pall_UE (end)} -Pall_UE (AckSet_inx), the end bitmap index corresponding to the maximum beam synthesis ; Obtaining a zero notch loss through the home horizontal beam and home vertical beam of the user terminal

According to the space division multiplexing interference I _SDMA , the channel mismatch loss I _ChanLoss, and the null trapping capability loss

Translate

Among them, α and β are each configurable parameters; The inner ring MCS breakage is obtained through the SINR ' _pair . The method according to any one of claims 1-3, wherein the preset number of the synthetic beams is 255. A beam distribution device includes: A projection determining module, configured to determine an energy projection ratio of each of the at least two synthetic beams preset; A beam activation module configured to select, from the at least two synthetic beams, at least one synthetic beam that meets an activation threshold as an activation beam, and allocate the activation beam to a user terminal; The activation threshold is a limit value of an energy projection ratio of the composite beam. The apparatus according to claim 9, further comprising: an inner-loop modulation and coding strategy MCS determination module, configured to obtain a broadband filtered signal and interference plus noise ratio (SINR) value of the user terminal under the current transmission scheme, and the SINR _CQI value, and The energy ratio of the composite beam and the SINR value determine the inner loop MCS. A base station including a processor, a memory, and a communication bus; The communication bus is configured to implement connection and communication between the processor and the memory; The processor is configured to execute a computer program stored in the memory to implement the method according to any one of claims 1-8. A computer-readable storage medium, wherein one or more computer programs are stored in the computer-readable storage medium, and the computer programs can be executed by one or more processors to implement any one of claims 1-8. Item.

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