CN115119282A

CN115119282A - UE pairing method, device and storage medium

Info

Publication number: CN115119282A
Application number: CN202210822416.6A
Authority: CN
Inventors: 刘英男
Original assignee: China United Network Communications Group Co Ltd
Current assignee: China United Network Communications Group Co Ltd
Priority date: 2022-07-13
Filing date: 2022-07-13
Publication date: 2022-09-27
Anticipated expiration: 2042-07-13
Also published as: CN115119282B

Abstract

The invention provides a User Equipment (UE) pairing method, a device and a storage medium, relates to the technical field of communication, and aims to solve the technical problem that UE cannot be reasonably paired. The method comprises the following steps: determining a resource occupancy for each of a plurality of candidate paired UEs; dividing a plurality of candidate paired UE into a plurality of sets according to the resource occupation amount of each candidate paired UE; a first set of the plurality of sets comprises candidate paired UEs of which the resource occupation amount is greater than or equal to a preset occupation threshold; a second set of the plurality of sets comprises candidate paired UEs with resource occupancy smaller than a preset occupancy threshold; and pairing the candidate pairing UE in each set of the plurality of sets to obtain at least one pairing result of each set. The method and the device can reasonably pair the UE so as to ensure the resource utilization rate of the paired UE for data transmission based on the MU-MIMO technology.

Description

UE pairing method, device and storage medium

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a UE pairing method, apparatus, and storage medium.

Background

The MU-MIMO (multi-user multiple input multiple output) technology refers to multiple User Equipments (UEs) performing uplink or downlink data transmission in the same time slot, and may perform space division multiplexing on frequency domain resources in a pairing manner to improve resource utilization and implement high-rate data transmission.

Currently, when a base station performs resource scheduling based on MU-MIMO technology, a plurality of UEs are usually paired indiscriminately. It should be understood that there are often large differences in traffic scenarios, hardware configurations, etc. of multiple UEs. Therefore, when such a pairing method is adopted, UEs with large data differences may be paired, which may easily result in a situation where frequency domain resources cannot be fully utilized, and it is difficult to reasonably pair a plurality of UEs.

Disclosure of Invention

The invention provides a UE pairing method, a UE pairing device and a storage medium, which are used for solving the technical problem that UE cannot be reasonably paired.

In order to achieve the purpose, the invention adopts the following technical scheme:

in a first aspect, a UE pairing method is provided, including: determining a resource occupancy for each of a plurality of candidate paired UEs; the resource occupation amount is used for representing the quantity of time-frequency resources occupied when the data to be transmitted of one candidate pairing UE is transmitted; dividing a plurality of candidate paired UE into a plurality of sets according to the resource occupation amount of each candidate paired UE; a first set of the plurality of sets comprises candidate paired UEs of which the resource occupation amount is greater than or equal to a preset occupation threshold; a second set of the plurality of sets comprises candidate paired UEs with resource occupancy smaller than a preset occupancy threshold; and pairing the candidate pairing UE in each set of the plurality of sets to obtain at least one pairing result of each set.

Optionally, before determining the resource occupation amount of each candidate paired UE in the multiple candidate paired UEs, the UE pairing method further includes: determining a plurality of channel quality parameters which correspond to a plurality of UE to be scheduled one by one; each channel quality parameter comprises an SINR value and a CQI value of UE to be scheduled; determining UE to be scheduled, which meets preset conditions, in a plurality of UE to be scheduled, as a plurality of candidate paired UE; the preset condition is that the SINR value is greater than or equal to a preset SINR threshold value, and/or the CQI value is greater than or equal to a preset CQI threshold value.

Optionally, the specific method for pairing the candidate paired UEs in each of the multiple sets to obtain at least one pairing result of each set includes: determining the priority ordering of the candidate paired UEs in each set based on the resource occupancy of the candidate paired UEs in each set; and performing pairing operation on each set according to the priority ranking of the candidate pairing UE in each set so as to obtain at least one pairing result of each set.

Optionally, according to the priority ranking of the candidate paired UEs in the target set of the multiple sets, performing pairing operation on the target set includes: determining a current interference tolerance set corresponding to a current pairing result; the current pairing result comprises target UE and first candidate UE; the current interference tolerance set comprises interference tolerances of the target UE and the first candidate UE; the target UE is the first candidate paired UE in the priority sequence of the candidate paired UEs in the target set; the first candidate UE is a second candidate paired UE in the priority sequence of the candidate paired UE in the target set; the target set is any one set in a plurality of sets;

when the interference tolerance less than or equal to the preset tolerance threshold exists in the current interference tolerance set, updating the current pairing result as follows: the target UE and the second candidate UE, and updating the current interference tolerance set as: interference tolerance of the target UE and the second candidate UE; the second candidate UE is a third candidate paired UE in the priority sequence of the candidate paired UE in the target set;

when the interference tolerance which is less than or equal to a preset tolerance threshold value does not exist in the current interference tolerance set, determining the number of space division multiplexing layers corresponding to the current pairing result; when the number of space division multiplexing layers corresponding to the current pairing result is smaller than a preset layer number threshold, updating the current pairing result as follows: the target UE, the first candidate UE and the second candidate UE, and updating the current interference tolerance set as: interference tolerance of the target UE and the second candidate UE, interference tolerance of the first candidate UE and the second candidate UE; when the number of space division multiplexing layers corresponding to the current pairing result is equal to a preset number of layers threshold, determining the current pairing result as a pairing result, and updating the target set as: candidate paired UEs other than the candidate paired UE in the current pairing result; and outputting at least one pairing result of the target set until the candidate pairing UE does not exist in the target set.

Optionally, the UE pairing method further includes: determining a first beam corresponding to a first candidate UE; the first wave beam is an SRS wave beam with the RSRP value larger than or equal to a preset RSRP value when the first candidate UE is measured in the plurality of SRS wave beams; determining an RSRP value of a target UE in a first beam; and determining the difference between the RSRP value of the target UE on the first beam and the RSRP value of the first candidate UE on the first beam as the interference tolerance of the target UE and the first candidate UE.

Optionally, after pairing the candidate paired UEs in each set of the multiple sets to obtain at least one pairing result of each set, the UE pairing method further includes: determining a scheduled time slot for each of the at least one pairing result; and transmitting the data to be transmitted of the candidate pairing UE in each pairing result in the scheduling time slot of each pairing result.

In a second aspect, the present invention provides a UE pairing apparatus, including: a determination unit and a processing unit;

a determining unit configured to determine a resource occupancy of each of a plurality of candidate paired UEs; the resource occupation amount is used for representing the quantity of time-frequency resources occupied when the data to be transmitted of one candidate pairing UE is transmitted;

the processing unit is used for dividing the candidate paired UE into a plurality of sets according to the resource occupation amount of each candidate paired UE determined by the determining unit; a first set of the plurality of sets comprises candidate paired UEs of which the resource occupation amount is greater than or equal to a preset occupation threshold; a second set of the plurality of sets comprises candidate paired UEs with resource occupancy smaller than a preset occupancy threshold;

the processing unit is further configured to pair the candidate paired UEs in each of the plurality of sets to obtain at least one pairing result of each set.

Optionally, the determining unit is further configured to determine a plurality of channel quality parameters that are in one-to-one correspondence with the plurality of UEs to be scheduled; each channel quality parameter comprises an SINR value and a CQI value of UE to be scheduled; the determining unit is further configured to determine, as multiple candidate paired UEs, UEs to be scheduled that meet a preset condition among the multiple UEs to be scheduled; the preset condition is that the SINR value is greater than or equal to a preset SINR threshold value, and/or the CQI value is greater than or equal to a preset CQI threshold value.

Optionally, the processing unit is specifically configured to: determining the priority ranking of the candidate paired UEs in each set based on the resource occupation amount of the candidate paired UEs in each set; and performing pairing operation on each set according to the priority ranking of the candidate pairing UE in each set so as to obtain at least one pairing result of each set.

Optionally, the determining unit is further configured to determine a first beam corresponding to the first candidate UE; the first wave beam is an SRS wave beam with the RSRP value larger than or equal to a preset RSRP value when the first candidate UE is measured in the plurality of SRS wave beams; a determining unit, further configured to determine an RSRP value of the target UE on the first beam; the determining unit is further configured to determine a difference between an RSRP value of the target UE on the first beam and an RSRP value of the first candidate UE on the first beam as an interference tolerance of the target UE and the first candidate UE.

Optionally, the UE pairing apparatus further includes: a transmission unit; a determining unit, further configured to determine a scheduled time slot of each of the at least one pairing result; and the transmission unit is used for transmitting the data to be transmitted of the candidate pairing UE in each pairing result in the scheduling time slot of each pairing result.

In a third aspect, a UE pairing apparatus is provided, including a memory and a processor; the memory is used for storing computer execution instructions, and the processor is connected with the memory through a bus; when the UE pair is running, the processor executes the memory-stored computer-executable instructions to cause the UE pair to perform the UE pairing apparatus method as in the first aspect.

The UE pairing apparatus may be a network device, or may be a part of the network device, for example, a system on chip in the network device. The system on chip is configured to support the network device to implement the functions involved in the first aspect and any one of the possible implementations thereof, for example, to receive, determine, and offload data and/or information involved in the data processing method. The chip system includes a chip and may also include other discrete devices or circuit structures.

In a fourth aspect, a computer-readable storage medium is provided. The computer readable storage medium comprises computer executable instructions which, when executed on a computer, cause the computer to perform the UE pairing method as in the first aspect.

It should be noted that all or part of the above computer instructions may be stored on the first computer readable storage medium. The first computer-readable storage medium may be packaged together with the processor of the UE pairing apparatus, or may be packaged separately from the processor of the UE pairing apparatus, which is not limited in this application.

In the present application, the names of the UE pairing apparatus described above do not limit the devices or functional modules themselves, and in actual implementation, the devices or functional modules may appear by other names. Insofar as the functions of the respective devices or functional modules are similar to those of the present application, they fall within the scope of the claims of the present application and their equivalents.

These and other aspects of the present application will be more readily apparent from the following description.

The technical scheme provided by the application at least brings the following beneficial effects:

based on any of the above aspects, the resource occupancy of each candidate paired UE in the multiple candidate paired UEs may be determined, and the multiple candidate paired UEs may be divided into multiple sets according to the resource occupancy of each candidate paired UE, so that the candidate paired UEs in each set in the multiple sets may be further paired to obtain at least one pairing result of each set. The resource occupation amount is used for representing the quantity of time-frequency resources occupied when the data to be transmitted of the candidate pairing UE is transmitted. A first set of the plurality of sets includes candidate paired UEs having a resource occupancy greater than or equal to a preset occupancy threshold. A second set of the plurality of sets includes candidate paired UEs having a resource occupancy less than a preset occupancy threshold.

Compared with the non-differential pairing mode in the prior art, the method and the device have the advantages that the multiple candidate paired UEs can be divided based on the resource occupation amount of each candidate paired UE in the multiple candidate paired UEs, so that the candidate paired UEs with smaller resource occupation amount difference can be divided into the same set. In this way, the method and the device for pairing UE can respectively determine at least one pairing result of each set, so that the resource occupation amount of the paired UE in each pairing result is not greatly different. Compared with a non-differential pairing mode in the related art, the method and the device can avoid the problem that frequency domain resources cannot be fully utilized, so that the resource utilization rate is improved, and the transmission efficiency is improved. Therefore, the UE can be reasonably paired, and the resource utilization rate of the paired UE for data transmission by adopting the MU-MIMO technology can be ensured.

Drawings

Fig. 1 is a first diagram illustrating UE pairing transmission according to an embodiment of the present invention;

fig. 2 is a schematic diagram illustrating UE pairing transmission according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a communication system according to an embodiment of the present invention;

fig. 4 is a first flowchart illustrating a UE pairing method according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a time-frequency resource according to an embodiment of the present invention;

fig. 6 is a flowchart illustrating a UE pairing method according to an embodiment of the present invention;

fig. 7 is a third flowchart illustrating a UE pairing method according to an embodiment of the present invention;

fig. 8 is a fourth flowchart illustrating a UE pairing method according to an embodiment of the present invention;

fig. 9 is a fifth flowchart illustrating a UE pairing method according to an embodiment of the present invention;

fig. 10 is a sixth flowchart illustrating a UE pairing method according to an embodiment of the present invention;

fig. 11 is a third schematic diagram illustrating UE pairing transmission according to an embodiment of the present invention;

fig. 12 is a schematic structural diagram of a UE pairing apparatus according to an embodiment of the present invention;

fig. 13 is a first schematic structural diagram of a base station according to an embodiment of the present invention;

fig. 14 is a schematic structural diagram of a base station according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention.

In the embodiments of the present invention, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "such as" in an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

In the description of the present invention, "/" means "or" unless otherwise specified, for example, a/B may mean a or B. "and/or" herein is merely an association describing an associated object, and means that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. Further, "at least one" or "a plurality" means two or more. The terms "first", "second", and the like do not necessarily limit the number and execution order, and the terms "first", "second", and the like do not necessarily limit the difference.

With the evolution and development of wireless communication technology, the development of large-scale antenna technology makes a larger number of antennas become a key for increasing channel capacity, for example, 32TR and 64TR become conventional configurations of 5G Time Division Duplexing (TDD), and the spatial hierarchy of downlink channels of a cell can be made into 16 layers or even higher to 24 layers as the number of antennas increases. However, currently, the size and processing capability of the UE antenna are limited and EU is limited, and only 4TR can be achieved, and in order to fully utilize the downlink spatial multi-stream characteristics of a cell, multiple UE pairs are required to implement a higher transmission rate of the cell by using an MU-MIMO technique.

MU-MIMO refers to the time-frequency resource that can be spatially multiplexed by multiple UEs during uplink and downlink data transmission. As shown in fig. 1, UE1, UE2, UE3, and UE4 are paired UEs, and perform space division multiplexing using the same time-frequency resource and the near orthogonality of channels, so as to improve the cell capacity and the spectral efficiency of uplink and downlink. The UE5 and the UE6 are not paired with other UEs, and adopt a single-user multiple-input multiple-output (SU-MIMO) technology, which independently occupy time-frequency resources.

It should be noted that, when a plurality of UEs spatially multiplex time-frequency resources, the possible factors of the UEs suffering interference include the quality of the Sounding Reference Signal (SRS) of the UEs, the channel near orthogonality between the UEs, and the channel correlation, etc.

That is to say, when the SRS quality of the UE is good and the correlation between the UE channels is small, the interference between the UEs can be well eliminated, and the method is suitable for MU-MIMO pairing. When the SRS quality of the UE is poor (for example, SINR is low) or the channel correlation between UEs is strong, the interference between UEs cannot be well eliminated, and MU-MIMO may cause the throughput of the system to be decreased instead.

In the related art, when performing resource scheduling based on the MU-MIMO technology, a base station generally performs indiscriminate pairing on a plurality of UEs. It should be understood that there are often large differences in traffic scenarios, hardware configurations, etc. of multiple UEs. Therefore, when the pairing method is adopted, UEs with large data difference or large signal interference may be paired, which not only easily causes the situation that frequency domain resources cannot be fully utilized, but also cannot ensure the reliability of data transmission, and is difficult to reasonably pair a plurality of UEs.

For example, as shown in fig. 2, if the undifferentiated pairing is adopted, when the base station performs resource scheduling based on MU-MIMO technology, it may pair the UE1 with the UE2 in the first time slot and pair the UE3 with the UE4 in the second time slot. In this case, since the resource required by the UE1 is much larger than the resource required by the UE2, after the data transmission of the UE2 is completed and the UE1 is not completed, the resource allocated to the UE2 is idle, and the resource cannot be fully utilized. When the UE3 and the UE4 perform pairing transmission, there is a problem that resources cannot be fully utilized.

In order to solve the above problems in the prior art, embodiments of the present invention provide a UE pairing method, which may determine a resource occupation amount of each candidate paired UE in a plurality of candidate paired UEs, and may divide the plurality of candidate paired UEs into a plurality of sets according to the resource occupation amount of each candidate paired UE, so that the candidate paired UEs in each set of the plurality of sets may be further paired to obtain at least one pairing result of each set. The resource occupation amount is used for representing the quantity of time-frequency resources occupied when the data to be transmitted of the candidate pairing UE is transmitted. A first set of the plurality of sets includes candidate paired UEs having a resource occupancy greater than or equal to a preset occupancy threshold. A second set of the plurality of sets includes candidate paired UEs having a resource occupancy less than a preset occupancy threshold.

The UE pairing method provided by the application can be applied to a communication system. Fig. 3 is a schematic structural diagram of a communication system according to an embodiment of the present application. As shown in fig. 3, the communication system 100 may include: a base station 101 and a plurality of UEs 102. Wherein, the base station 101 can be in communication connection with each UE 102.

Alternatively, the base station in fig. 3, i.e. the public mobile communication base station, is an interface device for the mobile device to access the internet, and is also a form of a radio station, which refers to a radio transceiver station for information transfer between the UE102 and the base station through a mobile communication switching center in a certain radio coverage area.

Alternatively, the base station 101 in fig. 3 may include a plurality of Transmit and Receive (TR) arrays, where the TR array is composed of a transmit antenna (TX) array and a receive antenna (RX) array. Multiple TR arrays may be used for signaling with each UE102, carrying data transmitted between base station 101 and each UE 102.

In a possible manner, the base station 101 may utilize multiple TR arrays to implement data transmission based on MU-MIMO technology between the UEs 102 in the pairing result based on the pairing result of multiple UEs 102.

Optionally, the base station 101 in fig. 3 may be further configured to send a channel state information-reference signal (CSI-RS) to each UE102 within an active partial Bandwidth (BWP). In this way, after receiving the CSI-RS sent by the base station 101, each UE102 may estimate a channel in response to the CSI-RS, and report a Channel State Information (CSI) measurement result to the base station 101. Accordingly, the base station 101 may receive the CSI measurement result transmitted by each UE 102.

It should be noted that the CSI measurement result may include a Channel Quality Indicator (CQI), a Precoding Matrix Indicator (PMI), a Rank Indicator (RI), and the like.

In an implementation manner, the base station 101 may be further configured to receive an SRS transmitted by each UE102 in active BWP. The base station 101 may be further configured to process the SRS transmitted by each UE102 to determine a signal to interference plus noise ratio (SINR), a Reference Signal Receiving Power (RSRP), a PMI, and the like of a channel with each UE 102. The base station 101 may also be configured to count the data amount and the data type of data to be transmitted in a Radio Link Control (RLC) layer of each UE 102.

Alternatively, the UE102 in fig. 3 may be a terminal. The terminal may be a device that provides voice and/or data connectivity to a pointing user, a handheld device with wireless connectivity, or other processing device connected to a wireless modem. A wireless terminal may communicate with one or more core networks via a Radio Access Network (RAN). The wireless terminal may be a mobile terminal, such as a computer having a mobile terminal, or a portable, pocket, hand-held, computer-embedded mobile device, which exchanges language and/or data with a radio access network, for example, a mobile phone, a tablet computer, a notebook computer, a netbook, a Personal Digital Assistant (PDA). The embodiments of the present application do not set any limit to this.

Fig. 4 is a schematic flowchart of a UE pairing method according to an embodiment of the present application. The UE pairing method may be applied to the communication system 100 shown in fig. 3, and may be performed by the base station 101 shown in fig. 3.

Referring to fig. 4, a UE pairing method provided in an embodiment of the present application may include: S401-S403.

S401, the base station determines the resource occupation amount of each candidate pairing UE in a plurality of candidate pairing UEs.

The resource occupation amount is used for representing the quantity of time-frequency resources occupied when the data to be transmitted of the candidate pairing UE is transmitted.

In practical applications, multiple UEs to be scheduled may initiate data transmission requests simultaneously. Therefore, in one scheduling period, the base station needs to efficiently schedule and transmit data to be transmitted of a plurality of UEs to be scheduled, so as to ensure user experience. In this case, the base station may enable an MU-MIMO function, and perform scheduling transmission on data to be transmitted by using an MU-MIMO technology to pair a plurality of UEs to be scheduled.

It should be noted that, when a plurality of UEs to be scheduled are paired, the base station may determine, according to channel qualities of the plurality of UEs to be scheduled, the UE to be scheduled with a better channel quality as a candidate paired UE, so as to obtain a plurality of candidate paired UEs. Therefore, the base station can avoid pairing transmission of the UE to be scheduled with poor channel quality, and user experience is guaranteed. For the implementation of this process, reference may be made to the following detailed description of S401 to S402, which is not described herein again.

Based on this, the base station may determine the amount of the time-frequency resources occupied when the data to be transmitted of each candidate paired UE is transmitted, according to the amount of the data to be transmitted in the RLC layer cache of each candidate paired UE and the CSI measurement result reported by each candidate paired UE.

Specifically, the base station may determine, according to the RI in the CSI measurement result reported by the candidate paired UE, a rank (rank) required when transmitting the data to be transmitted of the candidate paired UE, that is, determine which layer or which stream in the spatial layering is used to transmit the data to be transmitted of the candidate paired UE. In addition, the base station may also determine a Modulation and Coding Scheme (MCS) matched with a channel state of the candidate paired UE according to a CSI measurement result reported by the candidate paired UE, so as to reduce a block error rate (BLER) when transmitting data to be transmitted of the candidate paired UE. As shown in table 1, is an index table for MCS in the third generation partnership project (3 GPP) TS 38.214. Each MSC index (MSC index) corresponds to a modulation order, a target code rate (target code rate) R and a spectral efficiency (spectral efficiency). Where x [1024] is a convention. The detailed content definition can refer to 3GPP TS 38.214, which is not described herein.

TABLE 1

Then, the base station may calculate the amount of time-frequency resources occupied when the candidate paired UE transmits the data to be transmitted, based on the amount of the data to be transmitted in the RLC layer buffer of the candidate paired UE and the rank and MCS determined according to the CSI measurement result. It should be understood that the specific calculation method may refer to the existing communication industry reference data, which is not described herein.

In one possible approach, as shown in fig. 5, the smallest resource granularity is one Orthogonal Frequency Division Multiplexing (OFDM) symbol in the time domain. In the frequency domain, the smallest granularity is one subcarrier. One OFDM symbol and one subcarrier may constitute one Resource Element (RE). Based on this, the size of one time-frequency resource may be a resource unit consisting of 12 carriers (i.e., one Resource Block (RB)) in the frequency domain and 14 OFDM symbols (i.e., one slot) in the time domain. Thus, the number of time-frequency resources can be represented by the product of the number of RBs in the frequency domain and the number of slots in the time domain.

It can be understood that there is a delay of at least n time slots in reporting the CQI measurement result, which may affect the accuracy of the CQI measurement result. When the time delay exceeds the coherence time of the channel (the maximum time difference range in which the channel is kept constant), the CQI measurement result at the reporting time will not match the channel quality at the scheduling time. The time delay is related to the processing capacity of the base station, the air interface transmission time delay and the CQI reporting period. Under the condition that the channel change is not very fast, the CQI measurement result is relatively accurate, and the result of the calculated time-frequency resource quantity is more reliable.

S402, the base station divides the candidate paired UE into a plurality of sets according to the resource occupation amount of each candidate paired UE.

Wherein a first set of the plurality of sets comprises candidate paired UEs for which resource occupancy is greater than or equal to a preset occupancy threshold. A second set of the plurality of sets includes candidate paired UEs having a resource occupancy less than a preset occupancy threshold.

In a possible manner, the preset occupancy threshold may be preset in the base station by an operation and maintenance person, and is used for distinguishing whether the candidate paired UE is a UE with high resource demand or a UE with low resource demand. It should be understood that the smaller the preset occupancy threshold, the more candidate paired UEs of the plurality of candidate paired UEs are counted as high resource demand UEs. Conversely, the larger the preset occupancy threshold is, the fewer the candidate paired UEs among the plurality of candidate paired UEs that are counted as high-resource-demand UEs are.

Based on this, after determining the resource occupancy of each candidate paired UE, the base station may divide, according to the resource occupancy of each candidate paired UE, the candidate paired UEs, of which the resource occupancy is greater than or equal to the preset occupancy threshold value, among the plurality of candidate paired UEs into the first set, and divide, of the plurality of candidate paired UEs, the candidate paired UEs, of which the resource occupancy is less than the preset occupancy threshold value, among the plurality of candidate paired UEs into the second set.

Illustratively, the first set is a and the second set is B. Wherein A ═ { a ═ a ₁ ,a ₂ ,…，a _i }。a _i For representing candidate paired UEs belonging to the first set a. Wherein B ═ B ₁ ,b ₂ ,…，b _i }。b _i For representing candidate paired UEs belonging to the second set B. Then a _i The resource occupation amount of (1) is greater than or equal to a preset occupation threshold value, and the UE with high resource demand is obtained. b _i The occupied resource amount is less than the preset occupied threshold value, and the UE with low resource demand is obtained.

In a possible manner, the operation and maintenance personnel may also preset a plurality of occupancy thresholds in the base station. Such as a first occupancy threshold and a second occupancy threshold. Wherein the first occupancy threshold is greater than the second occupancy threshold. In this case, the base station may divide, according to the resource occupancy of each candidate paired UE, the candidate paired UEs of which the resource occupancy is greater than or equal to the first occupancy threshold among the candidate paired UEs into the third set, divide, into the fourth set, the candidate paired UEs of which the resource occupancy is less than the first occupancy threshold and greater than or equal to the second occupancy threshold among the candidate paired UEs, and divide, into the fourth set, the candidate paired UEs of which the resource occupancy is less than the second occupancy threshold among the candidate paired UEs. In this way, the base station can implement fine division for multiple candidate paired UEs to further reduce the resource occupancy gap of the candidate paired UEs in each set, thereby improving the resource utilization rate.

S403, the base station pairs the candidate paired UEs in each set of the multiple sets to obtain at least one pairing result of each set.

Specifically, after dividing the multiple candidate paired UEs into multiple sets, the base station may determine the channel correlation of the candidate paired UEs in each set according to the interference tolerance between the candidate paired UEs in each set, so as to pair the candidate paired UEs with a larger interference tolerance, that is, with a poor channel correlation, to obtain at least one pairing result of each set. Subsequently, the base station may perform pairing transmission by using MU-MIMO technology for the candidate paired UEs in each pairing result.

It should be noted that the candidate paired UE in each pairing result is a UE paired for spatial layered multiplexing, and the number of spatial layered multiplexing layers occupied by the candidate paired UE in each pairing result is less than or equal to the maximum number of spatial layered multiplexing layers supported by the base station.

In an implementation manner, in order to avoid that when the UE performs data transmission after pairing, transmission efficiency is reduced due to the influence of other UEs with poor channel quality in the pairing result, referring to fig. 4, before S401 described above, that is, before the base station determines the resource occupation amount of each candidate paired UE in the multiple candidate paired UEs, as shown in fig. 6, the UE pairing method provided in the embodiment of the present invention further includes S501 to S502.

S501, a base station determines a plurality of channel quality parameters which correspond to a plurality of UE to be scheduled one by one.

Wherein, each channel quality parameter comprises an SINR value and a CQI value of the UE to be scheduled. Each channel quality parameter is used to indicate the channel quality of the channel between the base station and the UE that initiated the data transmission request.

In one possible approach, each UE to be scheduled may simultaneously transmit SRS when transmitting a data transmission request to the base station. Correspondingly, the base station may receive the SRS transmitted by each UE to be scheduled, and determine an SINR value between the SRS and each UE to be scheduled. And, the base station may transmit the CSI-RS to each UE to be scheduled that initiates the data transmission request.

Correspondingly, each UE to be scheduled may report the CQI value to the base station after receiving the CSI-RS from the base station and performing corresponding processing. In this way, the base station may determine a plurality of channel quality parameters to be in one-to-one correspondence with a plurality of UEs to be scheduled.

S502, the base station determines the UE to be scheduled, which meets preset conditions, in the plurality of UE to be scheduled, as a plurality of candidate paired UE.

The preset condition is that the SINR value is greater than or equal to a preset SINR threshold value, and/or the CQI value is greater than or equal to a preset CQI threshold value.

In a possible implementation manner, the preset SINR threshold may be SINR _Threshold If the base station determines that the SINR value of the UE to be scheduled initiating the data transmission request is greater than or equal to the SINR _Threshold And determining the UE to be scheduled as a candidate pairing UE. The preset CQI threshold may be a CQI _Threshold If the base station determines that the CQI value of the UE to be scheduled initiating the data transmission request is greater than or equal to the CQI value _Threshold And determining the UE to be scheduled as a candidate pairing UE.

Illustratively, if the base station is atSINR determined in the above step S301 _UE1 ＝26、SINR _UE2 ＝22、SINR _UE3 ＝25、SINR _UE4 ＝18，SINR _UE5 ＝29，CQI _UE1 ＝15、CQI _UE2 ＝19、CQI _UE3 ＝23、CQI _UE4 22 and CQI _UE5 20 and SINR _Threshold ＝25，CQI _Threshold The base station may determine that the UE1, the UE3, the UE4, and the UE5 are candidate paired UEs by comparing the SINR value of each UE to be scheduled initiating the data transmission request with a preset SINR threshold, and the CQI value of the UE to be scheduled with a preset CQI threshold.

It should be noted that the preset SINR threshold and the preset CQI threshold may be set in the base station in advance by operation and maintenance staff. The higher the preset SINR threshold is set, the better the channel quality of the channel between the screened candidate paired UE and the base station is. The lower the preset SINR threshold is set, the more candidate paired UEs are screened out.

It can be understood that, in the UE pairing method provided in the embodiment of the present invention, before the UE initiating the data transmission request is paired, the UE is screened according to the channel quality, so that the channel quality of the UE participating in the pairing is ensured to be good, the UE with poor channel quality is prevented from affecting the transmission of other UEs, and the transmission efficiency is reduced.

In an implementation manner, with reference to fig. 4, in the above S403, when the base station pairs candidate paired UEs in each set of multiple sets to obtain at least one pairing result of each set, as shown in fig. 7, an embodiment of the present invention provides an alternative implementation manner, which specifically includes: S601-S602.

S601, the base station determines the priority sequence of the candidate pairing UE in each set based on the resource occupation amount of the candidate pairing UE in each set.

Specifically, when the base station performs pairing on the candidate paired UEs in each set, the candidate paired UEs in each set may be sorted according to a manner that the resource occupancy amount is decreased from large to small, so as to obtain the priority sorting of the candidate paired UEs in each set. Subsequently, when the base station pairs the candidate paired UEs in each set, the base station may sequentially pair according to the priority order of the candidate paired UEs in each set.

Therefore, the method and the device can ensure that the difference of the resource occupation amounts of the paired UE is small in each pairing result, avoid pairing the candidate paired UE with large resource occupation amount difference, and further ensure the resource utilization rate. Moreover, the method and the device can ensure that the data to be transmitted of the UE with high resource demand is transmitted preferentially, and improve user experience.

S602, the base station performs pairing operation on each set according to the priority sequence of the candidate pairing UE in each set, so as to obtain at least one pairing result of each set.

When the base station performs pairing operation on a target set according to the priority ranking of candidate paired UEs in the target set in multiple sets, as shown in fig. 8, the method specifically includes:

and the base station determines a current interference tolerance set corresponding to the current pairing result. And the current pairing result comprises the target UE and the first candidate UE. The current interference tolerance set includes interference tolerances of the target UE and the first candidate UE. The target UE is the first candidate paired UE in the priority ranking of the candidate paired UEs in the target set. The first candidate UE is a second candidate paired UE in the priority ranking of the candidate paired UEs in the target set. The target set is any one of a plurality of sets.

Then, when the interference tolerance less than or equal to the preset tolerance threshold exists in the current interference tolerance set, the base station updates the current pairing result to be: the target UE and the second candidate UE, and updating the current interference tolerance set as: interference tolerance of the target UE and the second candidate UE. Wherein the second candidate UE is a third candidate paired UE in the priority ranking of the candidate paired UEs in the target set.

And when the interference tolerance which is less than or equal to the preset tolerance threshold value does not exist in the current interference tolerance set, the base station determines the number of space division multiplexing layers corresponding to the current pairing result. When the number of spatial division multiplexing layers corresponding to the current pairing result is smaller than the preset number-of-layers threshold, the base station may update the current pairing result to be: the target UE, the first candidate UE and the second candidate UE, and updating the current interference tolerance set as: interference tolerance of the target UE and the second candidate UE, interference tolerance of the first candidate UE and the second candidate UE. When the number of spatial division multiplexing layers corresponding to the current pairing result is equal to the preset number-of-layers threshold, the base station may determine the current pairing result as one pairing result, and update the target set as: candidate paired UEs other than the candidate paired UE in the current pairing result.

The base station may determine at least one pairing result of the target set until there is no candidate pairing UE in the target set.

In a possible manner, the preset tolerance threshold may be preset in the base station by an operation and maintenance person, and is used to determine whether the channel correlation between the UEs meets the pairing requirement, so as to reduce interference that may exist when the UEs perform pairing transmission, and ensure reliability when the UEs perform pairing transmission. The preset number-of-layers threshold may be set by operation and maintenance personnel according to the maximum number of spatial division multiplexing layers of the base station.

Exemplarily, the candidate paired UEs in the preset target set are UE1, UE2, UE3, UE4, UE5, UE6 and UE7, and the target UE in the current paired set is UE1, the first candidate UE is UE2, the second candidate UE is UE3, and the optimal beam of UE3 is BM _UE3 RSRP of UE3 is RSRP _UE3 . Base station passing BM _UE3 Measuring RSRP of UE1 and UE2, RSRP respectively _UE1 And RSRP _UE2 . Further, the base station may determine that the current interference tolerance set includes interference tolerances of UE3 and UE1, and interference tolerances of UE3 and UE2, as shown in table 2 below.

TABLE 2

In an implementation manner, in order to determine an interference tolerance between the target UE and the first candidate UE, as shown in fig. 9, an alternative implementation manner is provided in the embodiment of the present application, which specifically includes S701 to S703.

S701, the base station determines a first beam corresponding to the first candidate UE.

The first beam is an SRS beam with an RSRP value greater than or equal to a preset RSRP value when the first candidate UE is measured in the plurality of SRS beams.

In one possible approach, the base station may determine a first beam corresponding to the first candidate UE through CSI-RS beam scanning. Specifically, the base station may perform RSRP strength value measurement on the uplink SRS through the CSI-RS beams, and determine a beam with the maximum RSRP value as a first beam (i.e., an optimal beam) corresponding to the first candidate UE.

In one possible implementation manner, the base station measures RSRP of the SRS sent by the first candidate UE through the CSI-RS beam, and determines a beam corresponding to a maximum value of the RSRP as the first beam of the first candidate UE.

S702, the base station determines the RSRP value of the target UE in the first beam.

As a possible implementation manner, the base station may measure, through the first beam of the first candidate UE, the RSRP value of the SRS of the target UE to obtain the RSRP value of the target UE on the first beam.

S703, the base station determines the difference between the RSRP value of the target UE on the first beam and the RSRP value of the first candidate UE on the first beam as the interference tolerance of the target UE and the first candidate UE.

Specifically, after determining the RSRP value of the target UE on the first beam, the base station may determine a difference between the RSRP value of the target UE on the first beam and the RSRP value of the first candidate UE on the first beam as an interference tolerance of the target UE and the first candidate UE, so as to determine a channel correlation between the target UE and the first candidate UE.

It can be understood that the interference tolerance refers to a spatial interference difference between the paired UEs, and the larger the spatial interference tolerance is, the smaller the interference of the paired UEs in spatial layered multiplexing is, and the better the performance is when scheduling transmission is performed based on the MU-MIMO technology.

It should be noted that the first beam is an optimal beam when the first candidate UE is measured, that is, a beam corresponding to a maximum value of the signal strength when the first candidate UE transmits a signal. Therefore, after the RSRP value obtained by measuring the target UE based on the first beam, the further difference between the RSRP value of the target UE on the first beam and the RSRP value of the first candidate UE on the first beam can more accurately represent the spatial interference between the first candidate UE and the target UE.

In a possible manner, if the target UE performs beamforming by using the PMI weight, the preset tolerance threshold may be preset in the base station by a worker according to the PMI weight, and may be denoted as imospaceinfifmimplmld. When the interference tolerance of the target UE and the first candidate UE is greater than a first tolerance threshold, the base station may determine that the target UE and the first candidate UE are paired.

In a possible manner, if the target UE performs beamforming using the SRS weight, the preset tolerance threshold may be preset in the base station by the staff according to the SRS weight, and may be denoted as IMOspaceInfSRSthld. When the interference tolerance of the target UE and the first candidate UE is greater than the preset tolerance threshold, the base station may determine that the target UE and the first candidate UE are paired.

In a realizable manner, with reference to fig. 4, after S403, that is, after the base station pairs the candidate paired UEs in each of the multiple sets to obtain at least one pairing result of each set, as shown in fig. 10, the UE pairing method provided in this embodiment further includes S801-S802.

S801, the base station determines a scheduling time slot of each pairing result in at least one pairing result.

And one scheduling time slot is used for transmitting data to be transmitted of the candidate pairing UE in one pairing result.

As a possible implementation manner, the base station may allocate candidate paired UEs in the same pairing result in time-frequency resources of the same scheduling time slot, so that the candidate paired UEs in the same pairing result perform transmission of system messages or user data.

For example, as shown in fig. 11, if the number of multiplexing layers of the spatial hierarchy supported by the base station is 16, the candidate paired UEs in one pairing result are UE1, UE2, UE3, UE4, and UE5, and the number of multiplexing layers of the spatial hierarchy required to be occupied by each candidate paired UE is 4, 2, 4, and 4, respectively. In this case, the base station may allocate the UE1 through UE5 at the third slot.

S802, the base station transmits the data to be transmitted of the candidate pairing UE in each pairing result in the scheduling time slot of each pairing result.

In some embodiments, a scheduler in the base station allocates resources on a Physical Downlink Shared Channel (PDSCH) to candidate paired UEs in the same time slot, and selects an appropriate MCS for transmission of system messages or user data. Wherein, include: allocating time-frequency domain resources on the PDSCH for the candidate paired UE; allocating demodulation reference signal (DMRS) resources to the candidate paired UEs, so that the candidate paired UEs perform demodulation of the PDSCH; a suitable MCS is selected for the candidate pair UE for transmission of data on PDSCH.

It should be noted that, in the 3gpp ts 38.214V15.4.0, a 5.1.2.2 frequency domain Resource allocation in frequency domain section specifies two Resource allocation manners, namely type 0 and type 1, where type 0 is an allocation manner of Resource Block Group (RBG) granular allocation, and supports discontinuous allocation and continuous allocation; type 1 is an allocation manner in which RB granularity allocation is supported only for continuous allocation. When PDSCH frequency domain resources are allocated to candidate paired UEs, the resource allocation may be performed for the candidate paired UEs by referring to the content in the above specification.

The embodiment of the invention provides a UE pairing method, which can determine the resource occupation amount of each candidate paired UE in a plurality of candidate paired UEs, and can divide the candidate paired UEs into a plurality of sets according to the resource occupation amount of each candidate paired UE, so that the candidate paired UEs in each set in the plurality of sets can be further paired to obtain at least one pairing result of each set. The resource occupation amount is used for representing the quantity of time-frequency resources occupied when the data to be transmitted of the candidate pairing UE is transmitted. A first set of the plurality of sets includes candidate paired UEs having a resource occupancy greater than or equal to a preset occupancy threshold. A second set of the plurality of sets includes candidate paired UEs having a resource occupancy less than a preset occupancy threshold.

The scheme provided by the embodiment of the invention is mainly introduced from the perspective of a method. To implement the above functions, it includes hardware structures and/or software modules for performing the respective functions. Those of skill in the art will readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

In the embodiment of the present invention, the base station may be divided into functional modules according to the above method example, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. Optionally, the division of the modules in the embodiment of the present invention is schematic, and is only a logic function division, and there may be another division manner in actual implementation.

Fig. 12 is a schematic structural diagram of a UE pairing apparatus according to an embodiment of the present invention. The UE pairing apparatus may be configured to perform the UE pairing method. As shown in fig. 12, the UE pairing apparatus includes: a determination unit 110 and a processing unit 120.

A determining unit 110, configured to determine a resource occupancy of each candidate paired UE in the plurality of candidate paired UEs; the resource occupation amount is used for representing the quantity of time-frequency resources occupied when the data to be transmitted of one candidate pairing UE is transmitted; for example, as shown in fig. 4, the determination unit 110 may be configured to perform S401.

A processing unit 120, configured to divide the multiple candidate paired UEs into multiple sets according to the resource occupation amount of each candidate paired UE determined by the determining unit 110; a first set of the plurality of sets comprises candidate paired UEs of which the resource occupation amount is greater than or equal to a preset occupation threshold; a second set of the plurality of sets comprises candidate paired UEs with resource occupancy smaller than a preset occupancy threshold; for example, as shown in fig. 4, the processing unit 120 may be configured to execute S402.

The processing unit 120 is further configured to pair the candidate paired UEs in each of the multiple sets to obtain at least one pairing result of each set. For example, as shown in fig. 4, the processing unit 120 may be configured to execute S403.

Optionally, the determining unit 110 is further configured to determine a plurality of channel quality parameters that correspond to a plurality of UEs to be scheduled one to one; each channel quality parameter comprises an SINR value and a CQI value of UE to be scheduled; for example, as shown in fig. 6, the determining unit 110 may be configured to perform S501.

The determining unit 110 is further configured to determine, as multiple candidate paired UEs, a UE to be scheduled that meets a preset condition among multiple UEs to be scheduled; the preset condition is that the SINR value is greater than or equal to a preset SINR threshold value, and/or the CQI value is greater than or equal to a preset CQI threshold value. For example, as shown in fig. 6, the determining unit 110 may be configured to execute S502.

Optionally, the processing unit 120 is specifically configured to: determining the priority ranking of the candidate paired UEs in each set based on the resource occupation amount of the candidate paired UEs in each set; for example, as shown in fig. 7, the processing unit 110 may be configured to execute S601.

Performing pairing operation on each set according to the priority sequence of the candidate pairing UE in each set to obtain at least one pairing result of each set; for example, as shown in fig. 7, the processing unit 120 may be configured to execute S602.

Optionally, according to the priority ranking of the candidate paired UEs in the target set of the multiple sets, performing pairing operation on the target set includes: determining a current interference tolerance set corresponding to a current pairing result; the current pairing result comprises target UE and first candidate UE; the current interference tolerance set comprises interference tolerances of the target UE and the first candidate UE; the target UE is the first candidate paired UE in the priority sequence of the candidate paired UEs in the target set; the first candidate UE is a second candidate paired UE in the priority sequence of the candidate paired UE in the target set; the target set is any one of a plurality of sets.

Optionally, the determining unit 110 is further configured to determine a first beam corresponding to the first candidate UE; the first wave beam is an SRS wave beam with the RSRP value larger than or equal to a preset RSRP value when the first candidate UE is measured in the plurality of SRS wave beams; for example, as shown in fig. 9, the determination unit 110 may be configured to perform S701.

A determining unit 110, configured to determine an RSRP value of the target UE on the first beam; for example, as shown in fig. 9, the determination unit 110 may be configured to perform S702.

The determining unit 110 is further configured to determine a difference between the RSRP value of the target UE on the first beam and the RSRP value of the first candidate UE on the first beam as an interference tolerance of the target UE and the first candidate UE. For example, as shown in fig. 9, the determining unit 110 may be configured to execute S703.

Optionally, the UE pairing apparatus further includes: a transmission unit 130;

a determining unit 110, further configured to determine a scheduled time slot of each pairing result of the at least one pairing result; for example, as shown in fig. 10, the determination unit 110 may be configured to perform S801.

And the transmission unit is used for transmitting the data to be transmitted of the candidate pairing UE in each pairing result in the scheduling time slot of each pairing result. For example, as shown in fig. 10, the transmission unit 130 may be configured to perform S802.

In the case of implementing the functions of the integrated modules in the form of hardware, the embodiment of the present invention provides a schematic structural diagram of a base station. The base station is configured to perform the UE pairing method performed by the base station in the foregoing embodiment. As shown in fig. 13, the base station 200 includes a processor 901, a memory 902, and a bus 903. The processor 901 and the memory 902 may be connected by a bus 903.

The processor 901 is a control center of the base station, and may be a single processor or a collective term for multiple processing elements. For example, the processor 901 may be a Central Processing Unit (CPU), other general-purpose processors, or the like. Wherein a general purpose processor may be a microprocessor or any conventional processor or the like.

For one embodiment, processor 901 may include one or more CPUs, such as CPU0 and CPU 1 shown in FIG. 13.

The memory 902 may be, but is not limited to, a read-only memory (ROM) or other type of static storage device that may store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that may store information and instructions, an electrically erasable programmable read-only memory (EEPROM), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.

As a possible implementation, the memory 902 may be separate from the processor 901, and the memory 902 may be connected to the processor 901 via the bus 903 for storing instructions or program code. The processor 901 can implement the UE pairing method provided by the embodiment of the present invention when calling and executing the instructions or program codes stored in the memory 902.

In another possible implementation, the memory 902 may also be integrated with the processor 901.

The bus 903 may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 13, but this is not intended to represent only one bus or type of bus.

Note that the structure shown in fig. 13 does not constitute a limitation of the base station 200. The base station 200 may include more or fewer components than shown in fig. 13, or some components may be combined, or a different arrangement of components.

As an example, in conjunction with fig. 12, the functions implemented by the determining unit 110, the processing unit 120, and the transmitting unit 130 in the UE pairing apparatus are the same as those of the processor 901 in fig. 13.

Optionally, as shown in fig. 13, the base station 200 provided in the embodiment of the present invention may further include a communication interface 904.

A communication interface 904 for connecting with other devices through a communication network. The communication network may be an ethernet network, a radio access network, a Wireless Local Area Network (WLAN), etc. The communication interface 904 may include a receiving unit for receiving data and a transmitting unit for transmitting data.

In one design, in the base station provided in the embodiment of the present invention, the communication interface may be further integrated in the processor.

Fig. 14 shows another hardware configuration of the base station in the embodiment of the present invention. As shown in fig. 14, the base station 300 may include a processor 1001 and a communication interface 1002. Processor 1001 is coupled to communication interface 1002.

The functions of the processor 1001 may refer to the description of the processor 901 described above. The processor 1001 also has a memory function, and the function of the memory 902 can be referred to.

The communication interface 1002 is used to provide data to the processor 1001. The communication interface 1002 may be an internal interface of a base station, or an external interface of the base station (corresponding to the communication interface 904).

It is noted that the configuration shown in fig. 14 does not constitute a limitation of the base station, and the base station 300 may include more or less components than those shown in fig. 14, or some components may be combined, or a different arrangement of components.

Through the above description of the embodiments, it is clear for a person skilled in the art that, for convenience and simplicity of description, only the division of the above functional units is illustrated. In practical applications, the above function allocation can be performed by different functional units according to needs, that is, the internal structure of the device is divided into different functional units to perform all or part of the above described functions. For the specific working processes of the system, the apparatus and the unit described above, reference may be made to the corresponding processes in the foregoing method embodiments, and details are not described here again.

The embodiment of the present invention further provides a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the instructions are executed by a computer, the computer executes each step in the method flow shown in the above method embodiment.

Embodiments of the present invention provide a computer program product comprising instructions which, when executed on a computer, cause the computer to perform the UE pairing method of the above method embodiments.

The computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, and a hard disk. Random Access Memory (RAM), Read-Only Memory (ROM), Erasable Programmable Read-Only Memory (EPROM), registers, a hard disk, an optical fiber, a portable Compact disk Read-Only Memory (CD-ROM), an optical storage device, a magnetic storage device, or any other form of computer-readable storage medium, in any suitable combination, or as appropriate in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an Application Specific Integrated Circuit (ASIC). In embodiments of the invention, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.

Since the apparatus, the device readable storage medium, and the computer program product in the embodiments of the present invention may be applied to the method described above, for technical effects that can be obtained by the apparatus, the apparatus readable storage medium, and the computer program product, reference may also be made to the method embodiments described above, and details of the embodiments of the present invention are not repeated herein.

The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions within the technical scope of the present invention are intended to be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A method for pairing User Equipment (UE), comprising:

determining a resource occupancy for each of a plurality of candidate paired UEs; the resource occupation amount is used for representing the quantity of time-frequency resources occupied when the data to be transmitted of one candidate pairing UE is transmitted;

dividing the candidate paired UEs into a plurality of sets according to the resource occupation amount of each candidate paired UE; a first set of the plurality of sets comprises candidate paired UEs with resource occupancy greater than or equal to a preset occupancy threshold; a second set of the plurality of sets comprises candidate paired UEs with resource occupancy less than the preset occupancy threshold;

pairing the candidate paired UEs in each of the plurality of sets to obtain at least one pairing result of each set.

2. The UE pairing method of claim 1, wherein prior to determining the resource occupancy of each of the plurality of candidate paired UEs, further comprising:

determining a plurality of channel quality parameters which correspond to a plurality of UE to be scheduled one by one; each channel quality parameter comprises a signal to interference plus noise ratio (SINR) value and a Channel Quality Indicator (CQI) value of UE to be scheduled;

determining the UE to be scheduled, which meets a preset condition, in the plurality of UE to be scheduled, as the plurality of candidate paired UE; the preset condition is that the SINR value is greater than or equal to a preset SINR threshold value, and/or the CQI value is greater than or equal to a preset CQI threshold value.

3. The UE pairing method according to claim 1, wherein the pairing the candidate paired UEs in each of the plurality of sets to obtain at least one pairing result of each set comprises:

determining a priority ranking of the candidate paired UEs in each set based on resource occupancy of the candidate paired UEs in each set;

and performing pairing operation on each set according to the priority sequence of the candidate pairing UE in each set so as to obtain at least one pairing result of each set.

4. The UE pairing method according to claim 3, wherein performing the pairing operation for a target set of the plurality of sets in a priority ordering of candidate paired UEs of the target set comprises: determining a current interference tolerance set corresponding to a current pairing result; the current pairing result comprises target UE and first candidate UE; the current interference tolerance set includes interference tolerances of the target UE and the first candidate UE; the target UE is the first candidate paired UE in the priority sequence of the candidate paired UEs in the target set; the first candidate UE is a second candidate paired UE in the priority ranking of the candidate paired UEs in the target set; the target set is any one set in the plurality of sets;

when an interference tolerance smaller than or equal to a preset tolerance threshold exists in the current interference tolerance set, updating the current pairing result as: the target UE and a second candidate UE, and updating the current interference tolerance set to: interference tolerance of the target UE and the second candidate UE; the second candidate UE is a third candidate paired UE in the priority ranking of the candidate paired UEs in the target set;

when the interference tolerance which is less than or equal to the preset tolerance threshold does not exist in the current interference tolerance set, determining the number of space division multiplexing layers corresponding to the current pairing result;

when the number of space division multiplexing layers corresponding to the current pairing result is smaller than a preset layer number threshold, updating the current pairing result to be: the target UE, the first candidate UE, and the second candidate UE, and updating the current interference tolerance set to: interference tolerance of the target UE and the second candidate UE, interference tolerance of the first candidate UE and the second candidate UE;

when the number of space division multiplexing layers corresponding to the current pairing result is equal to the preset number threshold, determining the current pairing result as a pairing result, and updating the target set as: candidate paired UEs other than the candidate paired UE in the current pairing result;

and outputting at least one pairing result of the target set until no candidate pairing UE exists in the target set.

5. The UE pairing method according to claim 4, further comprising:

determining a first beam corresponding to the first candidate UE; the first beam is an SRS beam with Reference Signal Received Power (RSRP) value greater than or equal to a preset RSRP value when the first candidate UE is measured in a plurality of channel Sounding Reference Signal (SRS) beams;

determining an RSRP value of the target UE on the first beam;

determining a difference between an RSRP value of the target UE on the first beam and an RSRP value of the first candidate UE on the first beam as an interference tolerance of the target UE and the first candidate UE.

6. The method of any one of claims 1 to 5, wherein after pairing the candidate paired UEs in each of the plurality of sets to obtain at least one pairing result for each set, the method further comprises:

determining a scheduled time slot for each of the at least one pairing result;

and transmitting the data to be transmitted of the candidate pairing UE in each pairing result in the scheduling time slot of each pairing result.

7. An apparatus for pairing UE, comprising: a determination unit and a processing unit;

the determining unit is configured to determine a resource occupancy of each candidate paired UE in the plurality of candidate paired UEs; the resource occupation amount is used for representing the quantity of time-frequency resources occupied when the data to be transmitted of one candidate pairing UE is transmitted;

the processing unit is configured to divide the multiple candidate paired UEs into multiple sets according to the resource occupation amount of each candidate paired UE determined by the determining unit; a first set of the plurality of sets comprises candidate paired UEs with resource occupancy greater than or equal to a preset occupancy threshold; a second set of the plurality of sets comprises candidate paired UEs with resource occupancy less than the preset occupancy threshold;

8. The UE pairing apparatus according to claim 7,

the determining unit is further configured to determine a plurality of channel quality parameters in one-to-one correspondence with a plurality of UEs to be scheduled; each channel quality parameter comprises an SINR value and a CQI value of UE to be scheduled;

the determining unit is further configured to determine, as the candidate paired UEs, UEs to be scheduled that satisfy a preset condition from among the multiple UEs to be scheduled; the preset condition is that the SINR value is greater than or equal to a preset SINR threshold value, and/or the CQI value is greater than or equal to a preset CQI threshold value.

9. The UE pairing apparatus according to claim 7, wherein the processing unit is specifically configured to:

10. The UE pairing apparatus of claim 9, wherein performing the pairing operation for a target set of the plurality of sets in a priority ordering of candidate paired UEs of the target set comprises: determining a current interference tolerance set corresponding to a current pairing result; the current pairing result comprises target UE and first candidate UE; the current interference tolerance set includes interference tolerances of the target UE and the first candidate UE; the target UE is a first candidate paired UE in the priority sequence of the candidate paired UEs in the target set; the first candidate UE is a second candidate paired UE in the priority ranking of the candidate paired UEs in the target set; the target set is any one set in the plurality of sets;

when the interference tolerance less than or equal to a preset tolerance threshold exists in the current interference tolerance set, updating the current pairing result as: the target UE and a second candidate UE, and updating the current interference tolerance set to: interference tolerance of the target UE and the second candidate UE; the second candidate UE is a third candidate paired UE in the priority ranking of the candidate paired UEs in the target set;

when the number of spatial division multiplexing layers corresponding to the current pairing result is equal to the preset number-of-layers threshold, determining the current pairing result as a pairing result, and updating the target set as: candidate paired UEs other than the candidate paired UE in the current pairing result;

11. The UE pairing apparatus according to claim 10,

the determining unit is further configured to determine a first beam corresponding to the first candidate UE; the first beam is an SRS beam with an RSRP value greater than or equal to a preset RSRP value when the first candidate UE is measured in a plurality of SRS beams;

the determining unit is further configured to determine an RSRP value of the target UE on the first beam;

the determining unit is further configured to determine, as the interference tolerance of the target UE and the first candidate UE, a difference between an RSRP value of the target UE on the first beam and an RSRP value of the first candidate UE on the first beam.

12. The UE pairing apparatus as claimed in any one of claims 7 to 11, further comprising: a transmission unit;

the determining unit is further configured to determine a scheduled time slot of each pairing result of the at least one pairing result;

and the transmission unit is configured to transmit the data to be transmitted of the candidate paired UE in each pairing result in the scheduling time slot of each pairing result.

13. A UE pairing apparatus comprising a memory and a processor; the memory is used for storing computer execution instructions, and the processor is connected with the memory through a bus; the processor executes the computer-executable instructions stored by the memory when the UE-pairing apparatus is running to cause the UE-pairing apparatus to perform the UE-pairing method of any one of claims 1-6.

14. A computer-readable storage medium, comprising computer-executable instructions that, when executed on a computer, cause the computer to perform the UE pairing method of any one of claims 1-6.