CN117354852A - Uplink pairing method, device, equipment and storage medium - Google Patents
Uplink pairing method, device, equipment and storage medium Download PDFInfo
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Abstract
The application discloses an uplink pairing method, an uplink pairing device, electronic equipment and a storage medium, wherein the uplink pairing method comprises the following steps: respectively acquiring reference signal receiving power from each data transmission terminal to each transmission receiving point of a distributed MIMO cell; taking a data transmission terminal with reference signal receiving power meeting the coverage condition of a single transmission receiving point as a target terminal, and determining the single transmission receiving point covering the target terminal as a target transmission receiving point; determining the sum of the antenna numbers included in the target transmission and reception points as the effective antenna number; determining a target pairing layer number according to the effective antenna number, and pairing the data transmission terminals to obtain an uplink pairing result; and the maximum layer number in the uplink pairing result is smaller than or equal to the target pairing layer number. Therefore, the uplink pairing layer number of the distributed MIMO cell at this time can be limited according to the number of antennas of the target transmission receiving point, so as to avoid MCS degradation.
Description
Technical Field
The application belongs to the field of communication, and in particular relates to an uplink pairing method, device, equipment and storage medium.
Background
In current wireless communication systems, a network device may communicate with a user device through a transmission reception point (Transmission Reception Point, TRP), but if there are multiple TRPs, there may be overlapping areas between the multiple TRP cells, resulting in a problem of signal interference.
In the prior art, a distributed antenna multiple-input multiple-output (MIMO) technology may be used, where multiple TRPs are combined into a physical cell including more transmit/receive channel number (Transmission Reception X, TRx) antennas, so as to eliminate the boundary of the original split cell, and the overlapping interference antennas become receiving antennas, so that the interference is converted into a useful signal.
In order to improve uplink capacity, the distributed MIMO technology supports uplink multi-user (MU) pairing, and multiple MUs that are successfully paired can send data through the same downlink physical shared channel (Physical Uplink Shared Channel, PUSCH) to obtain spatial multiplexing gain. The upper limit of the pairing layer number of the distributed MIMO cell generally depends on the total TRx antenna number included in the cell.
However, if the MUs are intensively distributed near a certain TRP and the path loss to other TRPs is large, then the actual effective receiving antenna in the distributed MIMO cell is an antenna with a single TRP, if the number of pairing layers is determined according to the total number of TRx antennas included in the cell, the number of pairing layers is too high, the inter-stream interference is large, and the modulation and coding scheme (modulation and coding scheme, MCS) is reduced, so that the overall uplink capacity of the MIMO cell is reduced.
Disclosure of Invention
An object of the embodiments of the present invention is to provide an uplink pairing method, apparatus, device, and storage medium, which can solve the problem that when MUs are intensively distributed near a certain TRP, the number of pairing layers is determined according to the total number of TRx antennas included in a distributed MIMO cell, resulting in an excessively high number of pairing layers, large inter-stream interference, and a decrease in MCS, so that the overall uplink capacity of the MIMO cell decreases.
In a first aspect, an embodiment of the present application provides an uplink pairing method, including:
respectively acquiring reference signal receiving power from each data transmission terminal to each transmission receiving point of a distributed MIMO cell;
taking the data transmission terminal with the reference signal receiving power meeting the single transmission receiving point coverage condition as a target terminal, and determining a single transmission receiving point covering the target terminal as a target transmission receiving point;
determining the sum of the antenna numbers included in the target transmission and reception points as an effective antenna number;
determining a target pairing layer number according to the effective antenna number, and pairing the data transmission terminals to obtain an uplink pairing result; and the maximum layer number in the uplink pairing result is smaller than or equal to the target pairing layer number.
Optionally, the determining, with the data transmission terminal whose reference signal received power meets the coverage condition of the single transmission receiving point as the target terminal, and determining the single transmission receiving point covering the target terminal as the target transmission receiving point includes:
determining a maximum value and a second maximum value of the reference signal received power for each data transmission terminal;
and taking the data transmission terminal with the maximum value and the second maximum value of the reference signal received power meeting the coverage condition of a single transmission receiving point as a target terminal, and taking the transmission receiving point corresponding to the maximum value of the reference signal received power as a target transmission receiving point.
Optionally, the taking the data transmission terminal with the maximum value and the second maximum value of the reference signal received power meeting the coverage condition of the single transmission receiving point as the target terminal includes:
determining a first difference between a maximum value of the reference signal received power and a second maximum value of the reference signal received power;
and under the condition that the first difference value is larger than a first threshold value and the second value of the reference signal received power is smaller than a second threshold value, judging the data transmission terminal as a target terminal.
Optionally, the acquiring the reference signal received power from each data transmission terminal to each transmission and reception point of the distributed MIMO cell includes:
respectively acquiring antenna signal receiving power from each data transmission terminal to each antenna of a distributed MIMO cell; the distributed MIMO cell comprises a plurality of transmission and reception points, and each transmission and reception point is provided with a plurality of antennas;
and determining a linear average value of antenna signal receiving power of each antenna of any transmission receiving point of the data transmission terminal as reference signal receiving power of the data transmission terminal to any transmission receiving point.
Optionally, the acquiring antenna signal receiving power of each data transmission terminal to each antenna of the distributed MIMO cell includes:
acquiring initial signal receiving power from each data transmission terminal to each antenna of a distributed MIMO cell, wherein the initial signal receiving power is reported by each data transmission terminal according to a preset period;
and responding to the uplink pairing instruction, and taking the last acquired initial signal receiving power as the antenna signal receiving power.
Optionally, the determining the target pairing layer number according to the effective antenna number includes:
And determining a target pairing layer number according to the effective antenna number and a preset maximum pairing layer number.
Optionally, the determining the target pairing layer number according to the effective antenna number and the preset maximum pairing layer number includes:
determining an interval to which the effective antenna number belongs; each interval corresponds to one interval pairing layer number;
and determining a minimum value between the interval pairing layer number corresponding to the effective antenna number and a preset maximum pairing layer number as a target pairing layer number.
Optionally, before the acquiring the reference signal receiving power from each data transmission terminal to each transmission receiving point of the distributed MIMO cell, the method further includes:
and screening the user terminals in the distributed MIMO cell, and determining the user terminals needing to perform data transmission as data transmission terminals.
In a second aspect, an embodiment of the present application provides an uplink pairing device, where the device includes:
the acquisition module is used for respectively acquiring the reference signal receiving power from each data transmission terminal to each transmission receiving point of the distributed MIMO cell;
the judging module is used for taking the data transmission terminal of which the reference signal received power meets the coverage condition of a single transmission receiving point as a target terminal, and determining the single transmission receiving point covering the target terminal as the target transmission receiving point;
A determining module, configured to determine a sum of the number of antennas included in the target transmission and reception point as an effective number of antennas;
the pairing module is used for determining a target pairing layer number according to the effective antenna number and pairing the data transmission terminals to obtain an uplink pairing result; and the maximum layer number in the uplink pairing result is smaller than or equal to the target pairing layer number.
Optionally, the judging module is specifically configured to:
determining a maximum value and a second maximum value of the reference signal received power for each data transmission terminal;
and taking the data transmission terminal with the maximum value and the second maximum value of the reference signal received power meeting the coverage condition of a single transmission receiving point as a target terminal, and taking the transmission receiving point corresponding to the maximum value of the reference signal received power as a target transmission receiving point.
Optionally, the judging module is specifically configured to:
determining a first difference between a maximum value of the reference signal received power and a second maximum value of the reference signal received power;
and under the condition that the first difference value is larger than a first threshold value and the second value of the reference signal received power is smaller than a second threshold value, judging the data transmission terminal as a target terminal.
Optionally, the acquiring module is specifically configured to:
respectively acquiring antenna signal receiving power from each data transmission terminal to each antenna of a distributed MIMO cell; the distributed MIMO cell comprises a plurality of transmission and reception points, and each transmission and reception point is provided with a plurality of antennas;
and determining a linear average value of antenna signal receiving power of each antenna of any transmission receiving point of the data transmission terminal as reference signal receiving power of the data transmission terminal to any transmission receiving point.
Optionally, the acquiring module is specifically configured to:
acquiring initial signal receiving power from each data transmission terminal to each antenna of a distributed MIMO cell, wherein the initial signal receiving power is reported by each data transmission terminal according to a preset period;
and responding to the uplink pairing instruction, and taking the last acquired initial signal receiving power as the antenna signal receiving power.
Optionally, the pairing module is specifically configured to:
and determining a target pairing layer number according to the effective antenna number and a preset maximum pairing layer number.
Optionally, the pairing module is specifically configured to:
determining an interval to which the effective antenna number belongs; each interval corresponds to one interval pairing layer number;
And determining a minimum value between the interval pairing layer number corresponding to the effective antenna number and a preset maximum pairing layer number as a target pairing layer number.
Optionally, the acquiring module is further configured to:
and screening the user terminals in the distributed MIMO cell, and determining the user terminals needing to perform data transmission as data transmission terminals.
In a third aspect, embodiments of the present application provide an electronic device comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the method as described in the first aspect.
In a fourth aspect, embodiments of the present application provide a readable storage medium having stored thereon a program or instructions which when executed by a processor implement the steps of the method according to the first aspect.
In a fifth aspect, embodiments of the present application provide a chip, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and where the processor is configured to execute a program or instructions to implement a method according to the first aspect.
In a sixth aspect, embodiments of the present application provide a computer program product stored in a storage medium, the program product being executable by at least one processor to implement the method according to the first aspect.
In the embodiment of the application, the reference signal receiving power from each data transmission terminal to each transmission receiving point of the distributed MIMO cell is respectively obtained; taking a data transmission terminal with reference signal receiving power meeting the coverage condition of a single transmission receiving point as a target terminal, and determining the single transmission receiving point covering the target terminal as a target transmission receiving point; determining the sum of the antenna numbers included in the target transmission and reception points as the effective antenna number; determining a target pairing layer number according to the effective antenna number, and pairing the data transmission terminals to obtain an uplink pairing result; and the maximum layer number in the uplink pairing result is smaller than or equal to the target pairing layer number.
That is, firstly, according to the reference signal receiving power from the data transmission terminal to each transmission receiving point, the distribution situation of the data transmission terminal in the distributed MIMO cell is determined, if the reference signal receiving power meets the single transmission receiving point coverage condition, the distribution of the data transmission terminal can be considered to be concentrated near the corresponding target transmission receiving point, and the path loss to other transmission receiving points is larger, therefore, the uplink pairing layer number of the distributed MIMO cell at this time can be limited according to the antenna number of the target transmission receiving point, so as to avoid MCS reduction and maintain the overall uplink capacity of the MIMO cell at a higher level.
Drawings
FIG. 1 is a flow chart illustrating an uplink pairing method according to one example embodiment;
fig. 2 is a schematic diagram illustrating a method for acquiring reference signal received power from each data transmission terminal to each transmission reception point according to an exemplary embodiment;
FIG. 3 is a distribution diagram of a target terminal according to an example embodiment;
FIG. 4 is a distribution diagram of a target terminal, according to an example embodiment;
FIG. 5 is a flow chart illustrating an uplink pairing method according to an example embodiment;
fig. 6 is a schematic structural diagram of an uplink pairing device according to an exemplary embodiment;
FIG. 7 is a block diagram of a base station uplink pairing electronic device according to one example embodiment;
fig. 8 is a block diagram illustrating an apparatus for upstream pairing in accordance with an example embodiment.
Detailed Description
Technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application are within the scope of the protection of the present application.
The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type and not limited to the number of objects, e.g., the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.
The uplink pairing method provided by the embodiment of the application is described in detail below by means of specific embodiments and application scenarios thereof with reference to the accompanying drawings.
Fig. 1 is a flowchart illustrating an uplink pairing method according to an exemplary embodiment, including the following steps.
In step S11, reference signal received power from each data transmission terminal to each transmission and reception point of the distributed MIMO cell is acquired.
In the current wireless communication system, a plurality of TRPs may be formed into a physical cell including more TRx antennas, then MUs are paired, and a plurality of MUs that are successfully paired may transmit data through the same PUSCH to obtain spatial multiplexing gain.
In the related art, the upper limit of the pairing layer number of the distributed MIMO cell generally depends on the total TRx antenna number included in the cell. In this case, if the MUs are intensively distributed near a certain TRP and the path loss to other TRPs is large, the number of paired layers determined according to the total number of TRx antennas included in the cell will be too high, resulting in large inter-stream interference and a decrease in MCS, and thus the overall uplink capacity of the MIMO cell decreases.
By the uplink pairing method, the excessive number of pairing layers can be avoided, so that interference among streams is reduced, and the overall uplink capacity of the MCS and the MIMO cell is prevented from being reduced.
In this step, first, the reference signal received power (Reference Signal Received Power, RSRP) of the reference signal received from each data transmission terminal to each transmission/reception point of the distributed MIMO cell is obtained. The data transmission terminal may be a User Equipment (UE), or may be other terminal devices such as a mobile phone, a computer, and the like.
The RSRP is an average value of signal power received on all resource elements carrying a reference signal in a certain symbol, and can be used to represent the signal strength of the received reference signal, where the larger the RSRP is, the larger the signal strength is, and conversely, the smaller the RSRP is, the smaller the signal strength is. The reference signal may be a channel sounding reference signal (Sounding Reference Signal, SRS), which is a signal transmitted by the MU in the uplink direction for estimating uplink channel frequency domain information.
In this step, before the reference signal receiving power from each data transmission terminal to each transmission receiving point of the distributed MIMO cell is obtained, the method further includes:
and screening the user terminals in the distributed MIMO cell, and determining the user terminals needing to perform data transmission as data transmission terminals.
That is, the user terminals that need to perform data transmission need to be identified from the plurality of user terminals in the distributed MIMO cell, as the data transmission terminals, it can be understood that only the data transmission terminals participate in subsequent uplink pairing, so that only the data transmission terminals can be analyzed to determine the corresponding TRP distribution situation, and the effectiveness of subsequent pairing is further improved.
In one implementation, the method for respectively obtaining the reference signal receiving power from each data transmission terminal to each transmission receiving point of the distributed MIMO cell includes:
respectively acquiring antenna signal receiving power from each data transmission terminal to each antenna of a distributed MIMO cell; the distributed MIMO cell comprises a plurality of transmission and reception points, wherein each transmission and reception point is provided with a plurality of antennas; and determining a linear average value of antenna signal receiving power of each antenna from the data transmission terminal to any transmission receiving point, and taking the linear average value as reference signal receiving power of any transmission receiving point of the data transmission terminal.
That is, in the distributed MIMO cell, all antennas in each TRP respectively measure the RSRP of the reference signal received by the antenna of each data transmission terminal, for convenience of description, the RSRP of the reference signal received by the antenna is referred to as the antenna signal reception power, and then each TRP obtains the RSRP of the current data transmission terminal to the TRP by calculating the linear average value of the antenna signal reception power of each antenna to the current data transmission terminal.
For example, as shown in fig. 2, in order to obtain the reference signal received power of each data transmission terminal to each transmission receiving point of the distributed MIMO cell, where the distributed MIMO cell includes 6 TRPs, TRP1, trp2, trp3, … … TRP6, respectively, each TRP has 7 antennas, for example, trp1_0 represents the first antenna in TRP1, trp1_1 represents the second antenna in trp1, and so on, for a single data transmission terminal, after obtaining the antenna signal received power of each antenna, a linear average of the antenna signal received power of each antenna of any transmission receiving point is determined as the reference signal received power of the data transmission terminal to the transmission receiving point, for example, UE1 trp1 RSRP represents the reference signal received power of the data transmission terminals UE1 to trp1, UE1 trp2 RSRP represents the reference signal received power of the data transmission terminals UE1 to trp2, and so on.
Further, acquiring antenna signal receiving power of each data transmission terminal to each antenna of the distributed MIMO cell, respectively, includes:
acquiring initial signal receiving power from each data transmission terminal reported by each data transmission terminal to each antenna of a distributed MIMO cell according to a preset period; and responding to the uplink pairing instruction, and taking the last acquired initial signal receiving power as the antenna signal receiving power.
That is, each antenna in each TRP of the distributed MIMO cell measures the initial signal receiving power of a single data transmission terminal, and periodically reports the initial signal receiving power according to a preset period, and when uplink pairing is required for the data transmission terminal, the initial signal receiving power reported last time is selected as the antenna signal receiving power. And each time of reporting is independently calculated without taking a plurality of average filtering values, so that the antenna signal receiving power measured by each TRP antenna is more accurate.
In step S12, a data transmission terminal whose reference signal received power satisfies a single transmission reception point coverage condition is taken as a target terminal, and a single transmission reception point covering the target terminal is determined as a target transmission reception point.
In this step, for each data transmission terminal, whether the current data transmission terminal satisfies a single transmission reception point coverage condition is determined according to reference signal reception power between the current data transmission terminal and each transmission reception point, and if so, the current data transmission terminal is considered to be covered by the single transmission reception point, so that the current data transmission terminal can be used as a target terminal, and further, a single transmission reception point covering the target terminal can be determined as a target transmission reception point. Therefore, the distribution condition of the data transmission terminals in the distributed MIMO cell is obtained, and the rationality of subsequent uplink distribution is facilitated.
In one implementation, a data transmission terminal whose reference signal received power satisfies a single transmission reception point coverage condition is used as a target terminal, and a single transmission reception point covering the target terminal is determined as a target transmission reception point, including:
determining a maximum value and a second maximum value of the reference signal received power for each data transmission terminal; and taking the data transmission terminal with the maximum value of the reference signal receiving power and the second maximum value meeting the coverage condition of the single transmission receiving point as a target terminal, and taking the transmission receiving point corresponding to the maximum value of the reference signal receiving power as the target transmission receiving point.
That is, the target terminal may be determined by sorting the reference signal received power of each data transmission terminal to each TRP from high to low, screening the maximum value and the second maximum value of the reference signal received power therefrom, and then comparing the maximum value and the second maximum value of the reference signal received power of the current data transmission terminal to each TRP to determine the distribution of the current data transmission terminal in the distributed MIMO cell.
It can be understood that, since the target terminal satisfies the single transmission and reception point coverage condition, it indicates that the target terminal is covered by the single transmission and reception point, and the single transmission and reception point covering the target terminal should correspond to the highest reference signal received power, the transmission and reception point corresponding to the maximum value of the reference signal received power is regarded as the target transmission and reception point.
The method for determining the maximum value and the second maximum value of the reference signal received power of the data transmission terminal, which meet the coverage condition of the single transmission receiving point, is used as a target terminal and comprises the following steps:
determining a first difference between a maximum value of the reference signal received power and a second maximum value of the reference signal received power; and under the condition that the first difference value is larger than a first threshold value and the second value of the reference signal received power is smaller than a second threshold value, determining the data transmission terminal as a target terminal.
That is, if the current data transmission terminal satisfies the following two conditions at the same time, it is determined that the data transmission terminal satisfies the single transmission reception point coverage condition, and is under a single TRP:
condition 1: maximum value of reference signal received power-second maximum value of reference signal received power > first threshold;
condition 2: the second maximum value of the reference signal received power is < the second threshold.
It can be understood that in the case where the condition 1 is satisfied, a gap between the maximum value and the second maximum value of the reference signal received power indicating the current data transmission terminal is large, and in the case where the condition 2 is satisfied, the second maximum value of the reference signal received power indicating the current data transmission terminal is small, that is, the current data transmission terminal can perform data transmission with high intensity only between transmission reception points corresponding to the maximum value of the reference signal received power, that is, the current data transmission terminal is distributed in the vicinity of the transmission reception points corresponding to the maximum value of the reference signal received power.
In step S13, the sum of the number of antennas included in the target transmission/reception point is determined as the effective number of antennas.
In the application, a single transmission receiving point covering each target terminal can be determined according to the distribution condition of the target terminals, and the effective antenna number of uplink reception of the distributed MIMO cell, that is, the sum of the antenna numbers included in the target transmission receiving points, is determined according to the determined antenna number included in the target transmission receiving point.
The target transmission and receiving points may be one, that is, all target terminals distributed near a single transmission and receiving point are distributed in the same single transmission and receiving point, that is, the target transmission and receiving point; alternatively, the target transmission receiving point may be a plurality of target terminals distributed near a single transmission receiving point, i.e. distributed at different single transmission receiving points.
For example, as shown in fig. 3 and fig. 4, a distribution diagram of a target terminal is shown, where the distributed MIMO cell includes 4 transmission and reception points, TRP1, TRP2, TRP3, and TRP4, respectively. If the target terminals are all concentrated under TRP1 as shown in fig. 3, the target transmission receiving point is TRP1, and the effective antenna number is the antenna number of TRP 1. If the target terminal is concentrated under TRP1 and TRP4, respectively, as shown in fig. 4, the target transmission reception point includes TRP1 and TRP4, and the effective antenna number is the sum of the antenna numbers of TRP1 and TRP4.
In step S14, determining a target pairing layer number according to the effective antenna number, and pairing the data transmission terminals to obtain an uplink pairing result; and the maximum layer number in the uplink pairing result is smaller than or equal to the target pairing layer number.
In this step, after the effective antenna number is determined, the target pairing layer number may be determined according to the effective antenna number, where the target pairing layer number is used to limit the pairing layer number of the data transmission terminal, that is, after the data transmission terminal is paired, the maximum layer number in the uplink pairing result is smaller than or equal to the target pairing layer number. In this way, the upper limit of the pairing layer number can be effectively limited, so as to avoid a series of problems caused by the excessively high pairing layer number.
In one implementation, determining the target pairing layer number according to the effective antenna number includes:
and determining a target pairing layer number according to the number of the effective antennas and the preset maximum pairing layer number.
The preset maximum number of paired layers is a preset value determined according to the configuration information of the distributed MIMO cell, that is, in the current distributed MIMO cell, the number of uplink paired layers of the allowed data transmission terminal does not exceed the preset maximum number of paired layers, otherwise, problems such as network congestion and excessive load may be caused. Therefore, in this step, the target pairing layer number is determined together according to the effective antenna number and the preset maximum pairing layer number, so that the target pairing layer number of the distributed MIMO cell can be further effectively limited.
Wherein, according to the effective antenna number and the preset maximum mateable layer number, determining the target pairing layer number comprises:
determining a section to which the effective antenna number belongs; each interval corresponds to one interval pairing layer number; and determining a minimum value between the interval pairing layer number corresponding to the effective antenna number and a preset maximum pairing layer number as a target pairing layer number.
That is, according to the interval in which the number of effective antennas is located, the corresponding interval pairing layer number may be determined, where the interval pairing layer number may be a preset empirical value, or may be determined according to the configuration information of the current distributed MIMO cell, and is not specifically limited. And then determining a minimum value between the corresponding interval pairing layer number and the preset maximum pairing layer number as a target pairing layer number, so that the target pairing layer number can be the maximum value in the allowable range on the premise that the interval pairing layer number and the preset maximum pairing layer number are not exceeded.
For example, the target pairing layer number may be determined using the following formula:
f(x,A)＝
min(1,A)(0≤x<4)
min(2,A)(4≤x<8)
min(4,A)(8≤x<12)
min(8,A)(12≤x<48)
wherein A represents a preset maximum pairing layer number, x represents an effective antenna number, min represents a minimum value operation, and f (x, A) represents a target pairing layer number. That is, if the number of effective antennas is within the [0,4 ] interval, the corresponding interval pairing layer number is 1; if the number of effective antennas is within the interval of [4,8 ], the number of pairing layers of the corresponding interval is 2; if the effective antenna number is in the interval of [8,12 ], the pairing layer number of the corresponding interval is 4; if the number of active antennas is within the [12,48) interval, the corresponding interval pairing number of layers is 8, and so on.
As shown in fig. 5, a flow chart of an uplink pairing method provided in the present application mainly includes three modules:
module a: obtaining the strongest TRP and the second strongest TRP of each terminal according to SRS RSRP measurement from each terminal to each TRP of the distributed MIMO cell; the terminal is a data transmission terminal, the strongest TRP is a transmission receiving point corresponding to the maximum value of the reference signal receiving power, and the second strongest TRP is a transmission receiving point corresponding to the second maximum value of the reference signal receiving power.
Module B: judging whether each terminal is under a certain TRP or not through a difference threshold of the strongest TRP and the second strongest TRP and an absolute value threshold of the second strongest TRP; the difference threshold between the strongest TRP and the second strongest TRP means that the first difference between the maximum value and the second maximum value of the received power of the reference signal is greater than the first threshold, and the absolute threshold of the second strongest TRP means that the second maximum value of the received power of the reference signal is less than the second threshold.
Module C: traversing all terminals in the distributed MIMO cell, and limiting the uplink pairing layer number of the distributed MIMO cell according to the antenna number of the TRP when all terminals are concentrated under one TRP and the path loss to other TRPs is large.
Therefore, the method and the device can be accurately adapted to scenes with high MU concentration, and corresponding uplink pairing layers are actually controlled according to the distribution condition of the data transmission terminals, so that the data transmission terminals can be paired with optimal performance. After uplink MU pairing performance is optimized, although the pairing layer number is reduced, the overall uplink throughput rate is obviously increased, more than 20% of experience benefit is brought, the pipeline capacity of the distributed MIMO cell is improved, the frequency spectrum efficiency and the cell capacity are improved, the distributed MIMO cell can bear more traffic, and more services are supported.
From the above, it can be seen that, according to the technical solution provided in the embodiments of the present application, first, according to the reference signal receiving power from the data transmission terminal to each transmission receiving point, the distribution situation of the data transmission terminal in the distributed MIMO cell is determined, if the reference signal receiving power meets the single transmission receiving point coverage condition, the distribution of the data transmission terminal can be considered to be concentrated near the corresponding target transmission receiving point, and the path loss to other transmission receiving points is larger, so that the uplink pairing layer number of the distributed MIMO cell at this time can be limited according to the antenna number of the target transmission receiving point, so as to avoid MCS drop, and maintain the overall uplink capacity of the MIMO cell at a higher level.
In the uplink pairing method provided in the embodiment of the present application, the execution body may be an uplink pairing device. In this embodiment, a method for performing uplink pairing by using an uplink pairing device is taken as an example, and a device for performing uplink pairing by using the uplink pairing method provided in this embodiment of the present application is described.
As shown in fig. 6, the apparatus includes:
an acquiring module 201, configured to acquire reference signal receiving power from each data transmission terminal to each transmission receiving point of the distributed MIMO cell;
a judging module 202, configured to take a data transmission terminal with the reference signal received power satisfying a single transmission receiving point coverage condition as a target terminal, and determine a single transmission receiving point covering the target terminal as a target transmission receiving point;
a determining module 203, configured to determine a sum of the number of antennas included in the target transmission and reception point as an effective number of antennas;
a pairing module 204, configured to determine a target pairing layer number according to the effective antenna number, and pair the data transmission terminals to obtain an uplink pairing result; and the maximum layer number in the uplink pairing result is smaller than or equal to the target pairing layer number.
Optionally, the judging module 202 is specifically configured to:
Determining a maximum value and a second maximum value of the reference signal received power for each data transmission terminal;
and taking the data transmission terminal with the maximum value and the second maximum value of the reference signal received power meeting the coverage condition of a single transmission receiving point as a target terminal, and taking the transmission receiving point corresponding to the maximum value of the reference signal received power as a target transmission receiving point.
Optionally, the judging module 202 is specifically configured to:
determining a first difference between a maximum value of the reference signal received power and a second maximum value of the reference signal received power;
and under the condition that the first difference value is larger than a first threshold value and the second value of the reference signal received power is smaller than a second threshold value, judging the data transmission terminal as a target terminal.
Optionally, the acquiring module 201 is specifically configured to:
respectively acquiring antenna signal receiving power from each data transmission terminal to each antenna of a distributed MIMO cell; the distributed MIMO cell comprises a plurality of transmission and reception points, and each transmission and reception point is provided with a plurality of antennas;
and determining a linear average value of antenna signal receiving power of each antenna of any transmission receiving point of the data transmission terminal as reference signal receiving power of the data transmission terminal to any transmission receiving point.
Optionally, the acquiring module 201 is specifically configured to:
acquiring initial signal receiving power from each data transmission terminal to each antenna of a distributed MIMO cell, wherein the initial signal receiving power is reported by each data transmission terminal according to a preset period;
and responding to the uplink pairing instruction, and taking the last acquired initial signal receiving power as the antenna signal receiving power.
Optionally, the pairing module 204 is specifically configured to:
and determining a target pairing layer number according to the effective antenna number and a preset maximum pairing layer number.
Optionally, the pairing module 204 is specifically configured to:
determining an interval to which the effective antenna number belongs; each interval corresponds to one interval pairing layer number;
and determining a minimum value between the interval pairing layer number corresponding to the effective antenna number and a preset maximum pairing layer number as a target pairing layer number.
Optionally, the obtaining module 201 is further configured to:
and screening the user terminals in the distributed MIMO cell, and determining the user terminals needing to perform data transmission as data transmission terminals.
From the above, it can be seen that, according to the technical solution provided in the embodiments of the present application, first, according to the reference signal receiving power from the data transmission terminal to each transmission receiving point, the distribution situation of the data transmission terminal in the distributed MIMO cell is determined, if the reference signal receiving power meets the single transmission receiving point coverage condition, the distribution of the data transmission terminal can be considered to be concentrated near the corresponding target transmission receiving point, and the path loss to other transmission receiving points is larger, so that the uplink pairing layer number of the distributed MIMO cell at this time can be limited according to the antenna number of the target transmission receiving point, so as to avoid MCS drop, and maintain the overall uplink capacity of the MIMO cell at a higher level.
According to the uplink pairing method provided by the embodiment of the application, the execution main body can be an uplink pairing terminal. In this embodiment of the present application, a method for performing uplink pairing by an uplink pairing terminal is taken as an example, and a device of the uplink pairing method provided in the embodiment of the present application is described.
The uplink pairing device in the embodiment of the application may be an electronic device, or may be a component in the electronic device, for example, an integrated circuit or a chip. The electronic device may be a terminal, or may be other devices than a terminal. By way of example, the electronic device may be a mobile phone, tablet computer, notebook computer, palm computer, vehicle-mounted electronic device, mobile internet appliance (Mobile Internet Device, MID), augmented reality (augmented reality, AR)/Virtual Reality (VR) device, robot, wearable device, ultra-mobile personal computer, UMPC, netbook or personal digital assistant (personal digital assistant, PDA), etc., but may also be a server, network attached storage (Network Attached Storage, NAS), personal computer (personal computer, PC), television (TV), teller machine or self-service machine, etc., and the embodiments of the present application are not limited in particular.
The uplink pairing device in the embodiment of the present application may be a device with an operating system. The operating system may be an Android operating system, an ios operating system, or other possible operating systems, which are not specifically limited in the embodiments of the present application.
The uplink pairing device provided in the embodiment of the present application can implement each process implemented by the embodiments of the methods of fig. 1 to 8, and in order to avoid repetition, a description is omitted here.
Optionally, as shown in fig. 7, the embodiment of the present application further provides an electronic device 500, including a processor 501 and a memory 502, where the memory 502 stores a program or an instruction that can be executed on the processor 501, and the program or the instruction implements each step of the above embodiment of the uplink pairing method when executed by the processor 501, and the steps achieve the same technical effect, so that repetition is avoided, and no further description is given here.
The electronic device in the embodiment of the application includes the mobile electronic device and the non-mobile electronic device described above.
Fig. 8 is a schematic hardware structure of an electronic device implementing an embodiment of the present application.
The electronic device 1000 includes, but is not limited to: radio frequency unit 1001, network module 1002, audio output unit 1003, input unit 1004, sensor 1005, display unit 1006, user input unit 1007, interface unit 1008, memory 1009, and processor 1010.
Those skilled in the art will appreciate that the electronic device 1000 may also include a power source (e.g., a battery) for powering the various components, which may be logically connected to the processor 1010 by a power management system to perform functions such as managing charge, discharge, and power consumption by the power management system. The electronic device structure shown in fig. 8 does not constitute a limitation of the electronic device, and the electronic device may include more or less components than shown, or may combine certain components, or may be arranged in different components, which are not described in detail herein.
From the above, it can be seen that, according to the technical solution provided in the embodiments of the present application, first, according to the reference signal receiving power from the data transmission terminal to each transmission receiving point, the distribution situation of the data transmission terminal in the distributed MIMO cell is determined, if the reference signal receiving power meets the single transmission receiving point coverage condition, the distribution of the data transmission terminal can be considered to be concentrated near the corresponding target transmission receiving point, and the path loss to other transmission receiving points is larger, so that the uplink pairing layer number of the distributed MIMO cell at this time can be limited according to the antenna number of the target transmission receiving point, so as to avoid MCS drop, and maintain the overall uplink capacity of the MIMO cell at a higher level.
It should be understood that in the embodiment of the present application, the input unit 1004 may include a graphics processor (Graphics Processing Unit, GPU) 10041 and a microphone 10042, and the graphics processor 10041 processes image data of still pictures or videos obtained by an image capturing device (such as a camera) in a video capturing mode or an image capturing mode. The display unit 1006 may include a display panel 10061, and the display panel 10061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 1007 includes at least one of a touch panel 10071 and other input devices 10072. The touch panel 10071 is also referred to as a touch screen. The touch panel 10071 can include two portions, a touch detection device and a touch controller. Other input devices 10072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and so forth, which are not described in detail herein.
The memory 1009 may be used to store software programs as well as various data. The memory 1009 may mainly include a first memory area storing programs or instructions and a second memory area storing data, wherein the first memory area may store an operating system, application programs or instructions (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. Further, the memory 1009 may include volatile memory or nonvolatile memory, or the memory 1009 may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM), static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (ddr SDRAM), enhanced SDRAM (Enhanced SDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DRRAM). Memory 109 in embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.
The processor 1010 may include one or more processing units; optionally, the processor 1010 integrates an application processor that primarily processes operations involving an operating system, user interface, application programs, and the like, and a modem processor that primarily processes wireless communication signals, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into the processor 1010.
The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by a processor, the processes of the uplink pairing method embodiment are implemented, and the same technical effects can be achieved, so that repetition is avoided, and no redundant description is provided herein.
Wherein the processor is a processor in the electronic device described in the above embodiment. The readable storage medium includes computer readable storage medium such as computer readable memory ROM, random access memory RAM, magnetic or optical disk, etc.
The embodiment of the application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled with the processor, and the processor is configured to run a program or an instruction, implement each process of the uplink pairing method embodiment, and achieve the same technical effect, so as to avoid repetition, and not be repeated here.
It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, chip systems, or system-on-chip chips, etc.
The embodiments of the present application provide a computer program product, which is stored in a storage medium, and the program product is executed by at least one processor to implement the respective processes of the above-mentioned uplink pairing method embodiment, and achieve the same technical effects, so that repetition is avoided, and a detailed description is omitted here.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solutions of the present application may be embodied essentially or in a part contributing to the prior art in the form of a computer software product stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk), comprising several instructions for causing a terminal (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the methods described in the embodiments of the present application.
The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.
Claims (18)
1. An uplink pairing method is characterized by comprising the following steps:
respectively acquiring reference signal receiving power from each data transmission terminal to each transmission receiving point of a distributed MIMO cell;
taking the data transmission terminal with the reference signal receiving power meeting the single transmission receiving point coverage condition as a target terminal, and determining a single transmission receiving point covering the target terminal as a target transmission receiving point;
determining the sum of the antenna numbers included in the target transmission and reception points as an effective antenna number;
determining a target pairing layer number according to the effective antenna number, and pairing the data transmission terminals to obtain an uplink pairing result; and the maximum layer number in the uplink pairing result is smaller than or equal to the target pairing layer number.
2. The uplink pairing method according to claim 1, wherein the determining the data transmission terminal whose reference signal received power satisfies the single transmission reception point coverage condition as a target terminal and determining a single transmission reception point that covers the target terminal as a target transmission reception point includes:
determining a maximum value and a second maximum value of the reference signal received power for each data transmission terminal;
And taking the data transmission terminal with the maximum value and the second maximum value of the reference signal received power meeting the coverage condition of a single transmission receiving point as a target terminal, and taking the transmission receiving point corresponding to the maximum value of the reference signal received power as a target transmission receiving point.
3. The uplink pairing method according to claim 2, wherein the data transmission terminal, for which the maximum value and the second maximum value of the reference signal received power satisfy the single transmission reception point coverage condition, is a target terminal, includes:
determining a first difference between a maximum value of the reference signal received power and a second maximum value of the reference signal received power;
and under the condition that the first difference value is larger than a first threshold value and the second value of the reference signal received power is smaller than a second threshold value, judging the data transmission terminal as a target terminal.
4. The uplink pairing method according to claim 1, wherein the respectively acquiring the reference signal received power from each data transmission terminal to each transmission-reception point of the distributed MIMO cell includes:
respectively acquiring antenna signal receiving power from each data transmission terminal to each antenna of a distributed MIMO cell; the distributed MIMO cell comprises a plurality of transmission and reception points, and each transmission and reception point is provided with a plurality of antennas;
And determining a linear average value of antenna signal receiving power of each antenna of any transmission receiving point of the data transmission terminal as reference signal receiving power of the data transmission terminal to any transmission receiving point.
5. The uplink pairing method according to claim 4, wherein the acquiring antenna signal reception power of each data transmission terminal to each antenna of the distributed MIMO cell includes:
acquiring initial signal receiving power from each data transmission terminal to each antenna of a distributed MIMO cell, wherein the initial signal receiving power is reported by each data transmission terminal according to a preset period;
and responding to the uplink pairing instruction, and taking the last acquired initial signal receiving power as the antenna signal receiving power.
6. The uplink pairing method according to claim 1, wherein the determining the target pairing layer number according to the effective antenna number includes:
and determining a target pairing layer number according to the effective antenna number and a preset maximum pairing layer number.
7. The uplink pairing method according to claim 6, wherein the determining the target pairing layer number according to the effective antenna number and the preset maximum pairing layer number includes:
Determining an interval to which the effective antenna number belongs; each interval corresponds to one interval pairing layer number;
and determining a minimum value between the interval pairing layer number corresponding to the effective antenna number and a preset maximum pairing layer number as a target pairing layer number.
8. The uplink pairing method according to claim 1, wherein before the reference signal received power from each data transmission terminal to each transmission receiving point of the distributed MIMO cell is obtained, further comprising:
and screening the user terminals in the distributed MIMO cell, and determining the user terminals needing to perform data transmission as data transmission terminals.
9. An uplink pairing device, comprising:
the acquisition module is used for respectively acquiring the reference signal receiving power from each data transmission terminal to each transmission receiving point of the distributed MIMO cell;
the judging module is used for taking the data transmission terminal of which the reference signal received power meets the coverage condition of a single transmission receiving point as a target terminal, and determining the single transmission receiving point covering the target terminal as the target transmission receiving point;
a determining module, configured to determine a sum of the number of antennas included in the target transmission and reception point as an effective number of antennas;
The pairing module is used for determining a target pairing layer number according to the effective antenna number and pairing the data transmission terminals to obtain an uplink pairing result; and the maximum layer number in the uplink pairing result is smaller than or equal to the target pairing layer number.
10. The uplink pairing device according to claim 9, wherein the determining module is specifically configured to:
determining a maximum value and a second maximum value of the reference signal received power for each data transmission terminal;
and taking the data transmission terminal with the maximum value and the second maximum value of the reference signal received power meeting the coverage condition of a single transmission receiving point as a target terminal, and taking the transmission receiving point corresponding to the maximum value of the reference signal received power as a target transmission receiving point.
11. The uplink pairing device according to claim 10, wherein the determining module is specifically configured to:
determining a first difference between a maximum value of the reference signal received power and a second maximum value of the reference signal received power;
and under the condition that the first difference value is larger than a first threshold value and the second value of the reference signal received power is smaller than a second threshold value, judging the data transmission terminal as a target terminal.
12. The uplink pairing device according to claim 9, wherein the obtaining module is specifically configured to:
respectively acquiring antenna signal receiving power from each data transmission terminal to each antenna of a distributed MIMO cell; the distributed MIMO cell comprises a plurality of transmission and reception points, and each transmission and reception point is provided with a plurality of antennas;
and determining a linear average value of antenna signal receiving power of each antenna of any transmission receiving point of the data transmission terminal as reference signal receiving power of the data transmission terminal to any transmission receiving point.
13. The uplink pairing device according to claim 12, wherein the obtaining module is specifically configured to:
acquiring initial signal receiving power from each data transmission terminal to each antenna of a distributed MIMO cell, wherein the initial signal receiving power is reported by each data transmission terminal according to a preset period;
and responding to the uplink pairing instruction, and taking the last acquired initial signal receiving power as the antenna signal receiving power.
14. The uplink pairing device according to claim 9, wherein the pairing module is specifically configured to:
and determining a target pairing layer number according to the effective antenna number and a preset maximum pairing layer number.
15. The uplink pairing device according to claim 14, wherein the pairing module is specifically configured to:
determining an interval to which the effective antenna number belongs; each interval corresponds to one interval pairing layer number;
and determining a minimum value between the interval pairing layer number corresponding to the effective antenna number and a preset maximum pairing layer number as a target pairing layer number.
16. The uplink pairing apparatus according to claim 9, wherein the acquisition module is further configured to:
and screening the user terminals in the distributed MIMO cell, and determining the user terminals needing to perform data transmission as data transmission terminals.
17. An electronic device, comprising:
a processor;
a memory for storing the processor-executable instructions;
wherein the processor is configured to execute the instructions to implement the uplink pairing method as defined in claims 1-9.
18. A readable storage medium, wherein a program or instructions is stored on the readable storage medium, which when executed by a processor, implement the steps of the uplink pairing method according to claims 1-9.
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