CN116137557A

CN116137557A - Data transmission method, device, network equipment and storage medium

Info

Publication number: CN116137557A
Application number: CN202111371937.6A
Authority: CN
Inventors: 耿莉娜
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2021-11-18
Filing date: 2021-11-18
Publication date: 2023-05-19

Abstract

The embodiment of the invention provides a data transmission method, a device, network equipment and a storage medium, wherein the method comprises the steps of obtaining a first transmission panel to which first user equipment to be scheduled belongs; when the residual resources of the target cell meet the data transmission requirement of the first user equipment and the number of the first transmission panels is greater than or equal to a first preset threshold value, adopting D-MIMO and the first user equipment to transmit data; when the residual resources of the target cell cannot meet the data transmission requirement of the first user equipment, the number of the first transmission panels is smaller than a first preset threshold, and the first parameter of the first transmission panel is larger than a second preset threshold, SDMA is adopted for data transmission with the first user equipment; the target cell is a cell covered by the network device, and the first parameter represents the strength of the useful signal received by the first user device on the first transmission panel. Therefore, the scheme of the invention can improve the resource multiplexing rate of the multi-TRP coverage area.

Description

Data transmission method, device, network equipment and storage medium

Technical Field

The present invention relates to the field of mobile communications technologies, and in particular, to a data transmission method, a data transmission device, a network device, and a storage medium.

Background

In a cellular mobile communication system, there is a great gap between service rates of a central user and an edge user, the edge user is not experienced well due to the influence of inter-cell interference, and blocking effect is remarkable in an FR2 frequency band (namely 24.25GHz-52.6 GHz).

To solve the above problem, the third generation partnership project (Third Generation Partnership Projects,3 GPP) introduces a coordinated transmission scheme of multiple-panel (Multi Transport Panel, multi-TRP) at a New air interface (New Radio, NR) R16, and may define different TRPs as the same cell, and use the same physical cell identity (Physical Cell Identifier, PCI). And, the spectrum efficiency is improved through incoherent cooperative transmission among a plurality of TRPs, so that the inter-cell interference in a mobile broadband (Enhanced Mobile Broadband, eMBB) scene is managed and enhanced, the edge user experience is improved, and the blocking effect is resisted.

The NR standard frequencies of the current public network time division multiplexing (Time Division Duplexing, TDD) are mostly 2.6GHz, 3.5GHz, 4.9GHz and the like, and the coverage radius of the NR cell is far lower than that of the long term evolution (Long Term Evolution, LTE) TDD cell due to the higher carrier frequency. Therefore, in high-value hot spot areas such as high-speed rail stations and airports, dense NR cell deployment becomes a necessary trend if the same coverage effect and better service experience as those of LTE are to be obtained. But the networking mode can bring serious co-channel interference. In this scenario, the Multi-TRP scheme can improve modulation and coding schemes (Modulation and coding scheme, MCS), single UE (SU) streams and throughput of users in different TRP coverage overlapping areas while suppressing inter-cell interference.

However, the Multi-TRP scheme reduces co-channel interference, enlarges coverage radius, and reduces radio spectrum multiplexing rate (system bandwidth is reduced from (single cell bandwidth x 1) to (single cell bandwidth x 1)) of different TRP coverage overlapping area, cell throughput and capacity.

Disclosure of Invention

The embodiment of the invention provides a data transmission method, a device, network equipment and a storage medium, which are used for solving the problem that the conventional Multi-TRP scheme can reduce the wireless spectrum multiplexing rate of different TRP coverage overlapping areas, thereby reducing the throughput and capacity of a cell.

In a first aspect, an embodiment of the present invention provides a data transmission method, applied to a network device, where the method includes:

acquiring a first transmission panel to which first user equipment to be scheduled belongs;

when the number of physical resource blocks included in the target resource is greater than or equal to the number of minimum physical resource blocks required by the first user equipment to transmit data in the current time slot, and the number of the first transmission panels is greater than or equal to a first preset threshold, performing data transmission with the first user equipment by adopting a distributed multi-stream transmission mode,

when the number of physical resource blocks included in the target resource is smaller than the number of minimum physical resource blocks required by the first user equipment to transmit data in the current time slot, the number of the first transmission panel is smaller than the first preset threshold, and the first parameter of the first transmission panel is larger than the second preset threshold, the first user equipment performs data transmission with the first user equipment in a space division multiplexing transmission mode;

The target resource is the remaining resource blocks in the physical resource blocks pre-allocated to the target cell in the current time slot, the target cell is the cell covered by the network device, and the first parameter represents the strength of the useful signal received by the first user device on the first transmission panel.

Optionally, the obtaining a first transmission panel to which the first user equipment to be scheduled belongs includes:

acquiring signal-to-interference-and-noise ratios of the first user equipment in each receiving channel of a target transmission panel, wherein the target transmission panel comprises a transmission panel of the target cell;

selecting a target receiving channel, and determining a target transmission panel to which the target receiving channel belongs as a candidate transmission panel, wherein the signal-to-dry ratio of the first user equipment in the target receiving channel is greater than or equal to a third preset threshold;

selecting a first number of candidate transmission panels from the candidate transmission panels and determining the selected candidate transmission panels as the first transmission panel when the number of the candidate transmission panels is greater than the first preset threshold, wherein the first number is equal to the first preset threshold;

And determining the candidate transmission panel as the first transmission panel under the condition that the number of the candidate transmission panels is smaller than or equal to the first preset threshold value.

Optionally, the acquiring the signal-to-interference-and-noise ratio of the first user equipment in each receiving channel of the target transmission panel includes:

determining the signal-to-interference-and-noise ratio represented by a first detection result as the signal-to-interference-and-noise ratio of each receiving channel of the target transmission panel of the first user equipment under the condition that a first time interval between a recording time of the most recently recorded first detection result and a current time is smaller than or equal to a fourth preset threshold, wherein the first detection result comprises the signal-to-interference-and-noise ratio of each receiving channel of the target transmission panel of the first user equipment detected when uplink service scheduling exists;

acquiring a recently recorded second detection result under the condition that the first time interval is larger than the fourth preset threshold, wherein the second detection result comprises signal-to-interference-and-noise ratios of channel sounding reference signals of all receiving channels of the first user equipment on the target transmission panel, which are detected according to a preset period;

And under the condition that the second time interval between the recording time of the second detection result which is recorded recently and the current time is smaller than or equal to a fifth preset threshold value, determining the signal-to-interference-and-noise ratio represented by the second detection result which is recorded recently as the signal-to-interference-and-noise ratio of the first user equipment in each receiving channel of the target transmission panel.

Optionally, the method further comprises:

and carrying out data transmission with the first user equipment on each channel of the target transmission panel under the condition that the second time interval is larger than the fifth preset threshold value.

Optionally, the selecting a first number of candidate transmission panels from the candidate transmission panels includes:

calculating a second parameter of each candidate transmission panel, wherein the second parameter represents the strength of a useful signal received by the first user equipment on the candidate transmission panel;

sequencing the candidate transmission panels according to the sequence from the big to the small of the second parameter to obtain a first sequence;

and selecting the first number of candidate transmission panels before ranking in the first ranking.

Optionally, after the obtaining the first transmission panel to which the first user equipment to be scheduled belongs, the method further includes:

And when the number of physical resource blocks included in the target resource is greater than or equal to the number of minimum physical resource blocks required by the first user equipment to transmit data in the current time slot, the number of the first transmission panel is smaller than the first preset threshold value, and the first parameter of the first transmission panel is greater than the second preset threshold value, the first user equipment allocates resources for the first user equipment from the target resource.

Optionally, the data transmission with the first user equipment by adopting a distributed multi-stream transmission mode includes:

and carrying out data transmission with the first user equipment by adopting a distributed multi-stream transmission mode on each channel of the first transmission panel.

Optionally, the performing data transmission with the first user equipment by using a space division multiplexing transmission mode includes:

determining a space-division-capable physical resource block which can be used by the first user equipment;

and carrying out data transmission with the first user equipment on each channel of the first transmission panel through the space-separable physical resource blocks.

Optionally, the determining the space-division-capable physical resource block that can be used by the first user equipment includes:

Acquiring at least one second user equipment, wherein the second user equipment is allocated with physical resource blocks, and the number of attributed transmission panels is smaller than the first preset threshold;

selecting a second user equipment different from the transmission panel to which the first user equipment belongs, and determining the selected second user equipment as candidate user equipment;

acquiring a third parameter of the first user equipment on each second transmission panel and a fourth parameter of each candidate user equipment on the first transmission panel, wherein the second transmission panel is a transmission panel to which the candidate user equipment belongs, the third parameter is the strength of a useful signal received by the first user equipment on the second transmission panel, and the fourth parameter is the strength of the useful signal received by the candidate user equipment on the first transmission panel;

acquiring a third parameter smaller than a fifth preset threshold;

and selecting a space-division-capable physical resource block which can be used by the first user equipment from physical resource blocks allocated to the third user equipment under the condition that a fourth parameter corresponding to the third user equipment is smaller than the fifth preset threshold, wherein the third user equipment is a second transmission panel corresponding to the third parameter smaller than the fifth preset threshold, and belongs to the second user equipment.

Optionally, the selecting a space-division-available physical resource block that can be used by the first user equipment from physical resource blocks that are already allocated to the third user equipment includes:

selecting user equipment with the minimum quantity of allocated physical resource blocks from a plurality of third user equipment meeting preset requirements under the condition that the plurality of third user equipment meeting the preset requirements exist, and determining the physical resource blocks allocated for the selected user equipment as usable space-division physical resource blocks of the first user equipment, wherein the preset requirements comprise the quantity of the physical resource blocks allocated for the third user equipment, and the quantity of the physical resource blocks is larger than or equal to the quantity of the minimum physical resource blocks required by the first user equipment for transmitting data in the current time slot;

and under the condition that the third user equipment does not meet the preset requirement, selecting the user equipment with the largest quantity of allocated physical resource blocks from the third user equipment, and determining the physical resource blocks allocated for the selected user equipment as the space-division-available physical resource blocks which can be used by the first user equipment.

Optionally, the method further comprises:

And carrying out data transmission with the first user equipment on each channel of a target transmission panel under the condition that the first user equipment does not have a transmission panel to which the first user equipment belongs, or under the condition that the number of the first transmission panels to which the first user equipment belongs is smaller than the first preset threshold value and the first parameter of the first transmission panel is smaller than or equal to a second preset threshold value, wherein the target transmission panel comprises the transmission panel of the target cell.

Optionally, before the obtaining the first transmission panel to which the first user equipment to be scheduled belongs, the method further includes:

sequencing a plurality of user equipment to be scheduled according to a predetermined priority order to obtain a second sequencing;

wherein the first user equipment is one user equipment selected from a plurality of user equipment to be scheduled according to the second ordering.

In a second aspect, an embodiment of the present invention further provides a network device, including:

a memory, a transceiver, a processor:

a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following operations:

In a third aspect, an embodiment of the present invention further provides a data transmission apparatus, applied to a network device, where the apparatus includes:

the first acquisition module is used for acquiring a first transmission panel to which the first user equipment to be scheduled belongs;

a first transmission module, configured to perform data transmission with the first user equipment by using a distributed multi-stream transmission mode when the number of physical resource blocks included in the target resource is greater than or equal to the number of minimum physical resource blocks required by the first user equipment to transmit data in the current slot and the number of the first transmission panel is greater than or equal to a first preset threshold,

a second transmission module, configured to perform data transmission with the first user equipment by using a space division multiplexing transmission mode when the number of physical resource blocks included in the target resource is smaller than the number of minimum physical resource blocks required by the first user equipment to transmit data in the current time slot, the number of the first transmission panel is smaller than the first preset threshold, and the first parameter of the first transmission panel is larger than the second preset threshold;

In a fourth aspect, an embodiment of the present invention further provides a processor readable storage medium, where a computer program is stored, where the computer program is configured to cause the processor to perform the method according to the first aspect.

In the embodiment of the invention, the network device can acquire the first transmission panel to which the first user device to be scheduled belongs, so that when the number of physical resource blocks included in the target resource is greater than or equal to the number of minimum physical resource blocks required by the first user device to transmit data in the current time slot and the number of the first transmission panel is greater than or equal to a first preset threshold, a distributed multi-stream transmission mode (D-MIMO) is adopted to transmit data with the first user device, when the number of physical resource blocks included in the target resource is greater than or equal to the number of minimum physical resource blocks required by the first user device to transmit data in the current time slot and the number of the first transmission panel is less than the first preset threshold, and when the intensity of a useful signal received by the first user device on the first transmission panel is greater than a second preset threshold, a space division multiplexing mode (SDMA) is adopted to transmit data with the first user device, wherein the target resource is the remaining resource blocks in the physical resource blocks in the target cell which are allocated in advance in the current time slot, and the target cell is the cell covered by the network device.

The number of the first transmission panels is larger than a first preset threshold, which means that the first user equipment is in a TRP coverage overlapping area, and for the user equipment in the area, when the residual resources of the covered cell of the user equipment meet the data transmission requirement of the user equipment in the current time slot, the network equipment can transmit data by adopting D-MIMO, so that multi-layer data are transmitted, and the resource multiplexing rate is further improved; the number of the first transmission panels is smaller than a first preset threshold, and the strength of a useful signal received by the first user equipment on the first transmission panels is larger than a second preset threshold, which means that the first user equipment belongs to a single-TRP near-point user equipment (namely belongs to one TRP and is closer to the TRP), and for the user equipment in the area, the network equipment can adopt SDMA to perform data transmission when the residual resources of the covered cell of the user equipment cannot meet the data transmission requirement of the user equipment in the current time slot, so that the plurality of user equipment can multiplex the same resources, and further the resource multiplexing rate is improved.

It can be known that, in the embodiment of the present invention, SDMA is introduced under a Multi-TRP architecture to increase the spectrum resource multiplexing rate, and support D-MIMO and SDMA adaptation in a cell, and the user rate and the resource multiplexing rate of the Multi-TRP coverage area are both considered, so that the overall throughput and capacity of the cell are increased.

Drawings

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

FIG. 1 is a schematic diagram of a prior art Single-point transmission;

fig. 2 is a diagram of coherent joint transmission (coherent joint transmission, C-JT) in the prior art;

FIG. 3 is a diagram of incoherent joint transmission (non-coherent joint transmission, NC-JT) according to the prior art;

FIG. 4 is a schematic diagram illustrating a comparison of a high-density networking scenario with a D-MIMO scenario in the prior art;

fig. 5 is a flowchart of steps of a data transmission method according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of marking of space-separable resources according to an embodiment of the present invention;

fig. 7 is a flowchart of a specific implementation of a data transmission method according to an embodiment of the present invention;

fig. 8 is a block diagram of a data transmission device according to an embodiment of the present invention;

fig. 9 is a block diagram of a network device according to an embodiment of the present invention.

Detailed Description

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

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

The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

The embodiment of the application provides a data transmission method and device, which are used for improving the resource multiplexing rate, so that the overall throughput and capacity of a cell are improved.

The method and the device are based on the same application, and because the principles of solving the problems by the method and the device are similar, the implementation of the device and the method can be referred to each other, and the repetition is not repeated.

In addition, the technical scheme provided by the embodiment of the application can be suitable for various systems, especially 5G systems. For example, suitable systems may be global system for mobile communications (global system of mobile communication, GSM), code division multiple access (code division multiple access, CDMA), wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) universal packet Radio service (general packet Radio service, GPRS), long term evolution (long term evolution, LTE), LTE frequency division duplex (frequency division duplex, FDD), LTE time division duplex (time division duplex, TDD), long term evolution-advanced (long term evolution advanced, LTE-a), universal mobile system (universal mobile telecommunication system, UMTS), worldwide interoperability for microwave access (worldwide interoperability for microwave access, wiMAX), 5G New air interface (New Radio, NR), and the like. Terminal devices and network devices are included in these various systems. Core network parts such as evolved packet system (Evloved Packet System, EPS), 5G system (5 GS) etc. may also be included in the system.

The terminal device according to the embodiments of the present application may be a device that provides voice and/or data connectivity to a user, a handheld device with a wireless connection function, or other processing device connected to a wireless modem, etc. The names of the terminal devices may also be different in different systems, for example in a 5G system, the terminal devices may be referred to as User Equipment (UE). The wireless terminal device may communicate with one or more Core Networks (CNs) via a radio access Network (Radio Access Network, RAN), which may be mobile terminal devices such as mobile phones (or "cellular" phones) and computers with mobile terminal devices, e.g., portable, pocket, hand-held, computer-built-in or vehicle-mounted mobile devices that exchange voice and/or data with the radio access Network. Such as personal communication services (Personal Communication Service, PCS) phones, cordless phones, session initiation protocol (Session Initiated Protocol, SIP) phones, wireless local loop (Wireless Local Loop, WLL) stations, personal digital assistants (Personal Digital Assistant, PDAs), and the like. The wireless terminal device may also be referred to as a system, subscriber unit (subscriber unit), subscriber station (subscriber station), mobile station (mobile), remote station (remote station), access point (access point), remote terminal device (remote terminal), access terminal device (access terminal), user terminal device (user terminal), user agent (user agent), user equipment (user device), and the embodiments of the present application are not limited.

The network device according to the embodiment of the present application may be a base station, where the base station may include a plurality of cells for providing services for a terminal. A base station may also be called an access point or may be a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminal devices, or other names, depending on the particular application. The network device may be operable to exchange received air frames with internet protocol (Internet Protocol, IP) packets as a router between the wireless terminal device and the rest of the access network, which may include an Internet Protocol (IP) communication network. The network device may also coordinate attribute management for the air interface. For example, the network device according to the embodiments of the present application may be a network device (Base Transceiver Station, BTS) in a global system for mobile communications (Global System for Mobile communications, GSM) or code division multiple access (Code Division Multiple Access, CDMA), a network device (NodeB) in a wideband code division multiple access (Wide-band Code Division Multiple Access, WCDMA), an evolved network device (evolutional Node B, eNB or e-NodeB) in a long term evolution (long term evolution, LTE) system, a 5G base station (gNB) in a 5G network architecture (next generation system), a home evolved base station (Home evolved Node B, heNB), a relay node (relay node), a home base station (femto), a pico base station (pico), and the like. In some network structures, the network device may include a Centralized Unit (CU) node and a Distributed Unit (DU) node, which may also be geographically separated.

Multiple antennas may be used for Multiple-input Multiple-output (Multi Input Multi Output, MIMO) transmission between the network device and the terminal device, and the MIMO transmission may be Single User MIMO (SU-MIMO) or Multiple User MIMO (MU-MIMO). The MIMO transmission may be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, or may be diversity transmission, precoding transmission, beamforming transmission, or the like, depending on the form and number of the root antenna combinations.

In order to facilitate understanding of the data transmission method according to the embodiment of the present invention, the following will be described first:

with the increasing crowding of sub 6GHz (i.e. the middle and low frequency bands below 6 GHz) frequency band resources, further expansion of frequency spectrum resources to higher frequency bands is an urgent need and a necessary trend of the development of 5G NR systems. Where a higher frequency band means that the antenna size can be smaller, i.e. the higher the frequency, the greater the number of antennas that can be accommodated under the same size constraints. Therefore, the introduction of the high frequency band is beneficial to the miniaturization of NR system equipment and the expansion of the antenna scale.

With the use of a large number of antennas, NR adopts a panel-based design. The panel is a basic module obtained by integrating a plurality of antenna arrays, corresponding radio frequency channels and partial baseband functional modules, and then a plurality of panels are combined according to a deployment scene based on the single panel to form a required array form. For example, the Base station may properly pull the distance between the panels, reduce the spatial correlation of the channels, and collect the spatial correlation of the channels to a baseband processing Unit (BBU) through an optical fiber for baseband processing, so as to obtain a larger diversity or multiplexing gain.

Wherein Multi-TRP/Panel supports a cooperative transmission scheme of coherent joint transmission (coherent joint transmission, C-JT) and incoherent joint transmission (non-coherent joint transmission, NC-JT). As in fig. 1, for Single-point (Single-point) transmission, a UE can only perform data transmission with one TRP; as shown in fig. 2, for C-JT transmission, each layer of data may be mapped onto multiple TRPs; as shown in fig. 3, only one TRP can be mapped per layer for NC-JT transmission. Therefore, for NC-JT transmission, the channel characteristics of layers transmitted by different panels are obviously different and are easy to separate, and the requirements on timing errors and a return link are relatively low; it is also possible to support higher numbers of layers when different TRP path losses are unbalanced. Compared with C-JT, NC-JT products have relatively low implementation difficulty, and the R16 standard is formally imported and C-JT is not imported.

In addition, serious co-channel interference can be generated in a high-density networking scene in the prior art. For example, as shown in fig. 4, one TRP corresponds to one cell, and when the UE1, UE2 and UE3 in the TRP overlapping area perform data transmission with the corresponding TRP, if the neighboring cell has data transmission on the same time-frequency resource, the neighboring cell will be interfered by the same frequency of other cells, so that an interference signal represented by a dashed line exists in the high density networking scenario in fig. 4.

In the D-MIMO scene, different TRPs are the same cell, so that different transmitting points can exist in the same cell, and the joint receiving and transmitting of multiple groups of antennas can be realized, so that interference signals are converted into useful signals.

Furthermore, when the Multi-TRP scheme is used for the eMBB scenario, the current mainstream scheme is: and (3) improving the user rate of the TRP overlapping region by adopting a D-MIMO technology, namely jointly processing a plurality of groups of TRPs in different geographic positions, and cooperatively transmitting or receiving single-user multiflows. The base station regards a plurality of panels as a plurality of channels of one antenna, and improves the uplink and downlink transmission stream numbers of the UE covering the overlapping area by utilizing the space correlation among the panels, so that the throughput of the user is improved, and the process is transparent to the UE side.

The basic flow of the D-MIMO is as follows: firstly, a base station screens a certain number of TRPs in a cell for UE to transmit or receive according to a certain principle; and according to the link quality and the spatial correlation between the UE and the selected TRPs, selecting the optimal transmission layer number (Rank) and the MCS in real time for adaptive multi-stream transmission.

The main gain points of D-MIMO are: 1. the anti-interference capability of the cell is improved by utilizing the characteristics of the distributed TRPs; 2. and improving the SU-MIMO average flow number by utilizing the spatial correlation of different TRPs.

From the above, the dominant technology in the current Multi-TRP networking scenario is NC-JT based D-MIMO. The scheme can effectively reduce the same-frequency interference in the coverage area to a certain extent, and improve the coverage radius of the cell and the UE experience rate of the TRP overlapping area. However, since this scheme defines a plurality of TRPs as the same cell, i.e., there are a plurality of transmission points in the same cell, the resources allocated to this cell cannot take the form of multiplexing, so that the spectrum multiplexing rate is low, resulting in low system throughput and capacity. Thus, the scheme reduces the multiplexing rate of radio spectrum resources in the coverage area, with a consequent reduction in system throughput and capacity, as compared to not employing the Multi-TRP scheme.

In addition, for a single TRP near point user equipment (i.e., belonging to one TRP and being closer to the TRP), it can only receive a useful signal of part of TRP in the cell, the power resources of other TRPs are wasted, and D-MIMO transmission is not possible; for coverage of hot spot areas, the main purpose of NR dense deployment is to provide a high-bandwidth, high-rate and high-quality user experience as a capacity layer, and the marginal user rate gain caused by pure D-MIMO is insufficient to compensate for performance loss. In addition, in some areas with complex service models and user distribution, simply relying on manual fixed configuration of network working modes for D-MIMO or SDMA is not flexible enough, and cannot adapt to the requirements of NR intelligent networks.

Fig. 5 shows a flow chart of a data transmission method according to an embodiment of the present invention. The method is applied to a network device, as shown in fig. 5, and may include the following steps:

step 501: and acquiring a first transmission panel to which the first user equipment to be scheduled belongs.

Wherein the strength of the useful signal received by a ue on at least one channel of a transmission panel is greater than a preset strength, indicating that the ue belongs to the transmission panel. The strength of the user signal may be expressed in terms of a signal-to-interference-and-noise ratio (SINR), i.e., if SINR _i,j,k >SINR _THR1 (i.e., a predetermined threshold value), channel k is the selected transmit-receive channel of UEi, and TRP j is the home TRP of UE i, i.e., when a UE is in an uplink channel, the TRP to which the channel belongs is the UE home TRP. Where i represents an ith UE, j represents a jth TRP, and k represents a kth uplink channel.

In addition, the data transmission method of the embodiment of the present invention may be periodically performed, that is, steps 501 to 503 are performed every time a preset period arrives.

Step 502: and when the number of physical resource blocks included in the target resource is greater than or equal to the number of minimum physical resource blocks required by the first user equipment for transmitting data in the current time slot and the number of the first transmission panel is greater than or equal to a first preset threshold, performing data transmission with the first user equipment by adopting a distributed multi-stream transmission mode.

The target resource is the rest resource blocks in the physical resource blocks pre-allocated to the target cell in the current time slot, and the target cell is the cell covered by the network equipment.

In addition, the number of the first transmission panels is greater than a first preset threshold, which indicates that the first user equipment is in the TRP coverage overlapping region. In the embodiment of the invention, for the user equipment in the TRP coverage overlapping area, the network equipment can adopt D-MIMO to transmit data when the residual resources of the covered cell meet the data transmission requirement of the user equipment in the current time slot, thereby transmitting multi-layer data and further improving the resource multiplexing rate.

Step 503: and when the number of physical resource blocks included in the target resource is smaller than the number of the minimum physical resource blocks required by the first user equipment for transmitting data in the current time slot, the number of the first transmission panel is smaller than the first preset threshold value, and the first parameter of the first transmission panel is larger than the second preset threshold value, the first user equipment performs data transmission with the first user equipment in a space division multiplexing transmission mode.

Wherein the first parameter represents the strength of the useful signal received by the first user device on the first transmission panel.

In addition, the number of the first transmission panels is smaller than a first preset threshold, and a first parameter of the first user equipment on the first transmission panel is larger than a second preset threshold, which means that the first user equipment belongs to a single TRP near point user equipment (namely belongs to one TRP and is closer to the TRP), and for the user equipment in the area, the network equipment can adopt SDMA to perform data transmission when the residual resources of the covered cell of the user equipment cannot meet the data transmission requirement of the user equipment in the current time slot, so that the plurality of user equipment can multiplex the same resources, and further the resource multiplexing rate is improved.

As can be seen from the foregoing steps 501 to 503, in the embodiment of the present invention, the network device may obtain the first transmission panel to which the first user device to be scheduled belongs, so that, when the number of physical resource blocks included in the target resource is greater than or equal to the minimum number of physical resource blocks required by the first user device to transmit data in the current time slot, and the number of the first transmission panels is greater than or equal to the first preset threshold, a distributed multi-stream transmission (D-MIMO) mode is adopted to perform data transmission with the first user device, and when the number of physical resource blocks included in the target resource is greater than or equal to the minimum number of physical resource blocks required by the first user device to transmit data in the current time slot, and the number of the first transmission panels is less than the first preset threshold, and the strength of the useful signal received by the first user device on the first transmission panel is greater than the second preset threshold, the data transmission is performed with the first user device by adopting a space division multiplexing mode (SDMA), where the target resource is the remaining physical resource blocks pre-allocated to the target cell in the current time slot, and the target resource is the target cell is covered by the network device.

Wherein the signal-to-interference-and-noise ratio can be determined according to the channel estimation result. For example, the transmission panel of the target cell includes TRP1, TRP2, TRP3 and TRP4, then for each UE, each receiving channel of each TPR may be estimated, and the channel estimate H of the ith UE in receiving channel k of TRPj may be obtained through smoothing between subcarriers _i,j,k And then according to H _i,j,k Calculating SINR of ith UE in receiving channel k of TRPj _i,j,k . If SINR _i,j,k >SINR _THR1 (i.e., the third preset threshold), then the reception channel k is the selected transceiver channel of UE i and TRP j is the home TRP of UE i. That is, when a UE belongs to a certain uplink channel (i.e., a receiving channel), the TRP to which the uplink channel belongs is the TRP to which the UE belongs.

In the embodiment of the present invention, if the signal-to-interference-and-noise ratio on at least one receiving channel is greater than the SINR for UEi, in order to reduce the algorithm complexity _THR1 When the number of TRPs of (a) is greater than a first preset threshold (e.g., 2), then determining these TPRs satisfying the conditions as candidate TRPs of UEi (i.e., if SINR _i,j,k >SINR _THR1 TRPj is the candidate TRP of the UEi), and a first number (i.e. 2) of TRPs are selected from the candidate TRPs as the TRPs to which the UEi belongs, and accordingly, the home channel of the UEi in the two TRPs is the same as that selected before; if the number of candidate TRP of the UEi is smaller than a second preset threshold, for example 1, this TRP is determined as the TRP to which the UEi belongs.

It can be known that, in the embodiment of the present invention, the channel Sounding Reference Signal (SRS) estimation may be performed on the ue according to the preset period to obtain the second detection result, and the uplink physical shared channel (PUSCH) estimation may be performed on the ue once when there is uplink traffic scheduling to obtain the first detection result.

Therefore, when the signal-to-interference-and-noise ratio of the UEi on each receiving channel of the target transmission panel is required to be used for selecting the TRP to which the UEi belongs, firstly, reading a first detection result (namely, a PUSCH estimation result) which is recorded recently, and if the first time interval between the recording time of the first detection result which is recorded recently and the current time is smaller than or equal to a fourth preset threshold value, indicating that the first detection result which is recorded recently is in the validity period, selecting the TRP to which the UEi belongs according to the first detection result; if the first time interval is greater than the fourth preset threshold value, the first detection result recorded recently is invalid, and the second detection result recorded recently can be read; if the second time interval between the recording time of the second detection result recorded recently and the current time is smaller than or equal to a fifth preset threshold, the second detection result recorded recently is within the validity period, and the TRP to which the UEi belongs can be selected according to the second detection result; if the second time interval is greater than the fifth preset threshold, the second detection result recorded recently is invalid, and the TRP to which the UEi belongs cannot be selected.

Optionally, the method further comprises:

Namely, when the first detection result and the second detection result of the first user equipment are invalid, the first user equipment cannot use D-MIMO or SDMA, and only a conservative scheduling mode, namely, a working mode that all channels of all TRPs in the network equipment perform total transmission and total reception on the first user equipment, can be adopted.

The second parameter may be a signal-to-interference-and-noise ratio of the first user equipment after the signal-to-interference-and-noise ratios of the channels of the candidate transmission panel are combined.

In addition, it should be noted that, the method for combining the signal-to-interference-and-noise ratios of the first ue in each channel of the candidate transmission panel may use an existing combining method, for example, a Zero Forcing (ZF) method or a linear minimum mean square error (Liner Minimum Mean Square Error, LMMSE) method.

For example, candidate TRP of UEi includes TRP1, TRP2, TRP3 and TRP4, then the signal-to-interference-and-noise ratio (i.e., SINR) of UEi at 1 st to n th receive channels of TRPj can be calculated _i,j,1 To SINR _i,j,n ) Combined signal-to-interference-plus-noise ratio SINR _i,j J takes each integer from 1 to 4, resulting in SINR _i,1 、SINR _i,2 、SINR _i,3 、SINR _i,4 Then, the SINR is performed in the order from the big to the small _i,1 、SINR _i,2 、SINR _i,3 、SINR _i,4 The ranking is performed so as to select a first number (e.g., 2) of values before ranking, and the candidate TRP corresponding to the selected values is then used as the TRP to which the UEi belongs.

Further, it will be appreciated that when a first number of transfer panels is selected from the candidate transfer panels, the candidate transfer panels may also be ordered in order of the second parameter from smaller to larger, and then the first number of transfer panels after the ranking is selected.

It can be seen that when the remaining resources of the cell covered by the network device meet the data transmission requirement of the user device in the current time slot and the first user device belongs to a single TRP near point user device (i.e. belongs to one TRP and is closer to the TRP), the resources can be allocated to the first user device from the remaining resources.

It should be noted that, when the first ue belongs to a single TRP near point ue, the resource allocated to the first ue belongs to a space-division-capable resource, where a preset flag may be used to identify the space-division-capable resource, so that other ues and the first ue may use the space-division-capable resource to perform data transmission.

For example, as shown in fig. 6, if UE2 belongs to a single TRP near point user equipment, PRB resources allocated to UE2 (i.e., RRB5 to RRB 9) are marked as SDMA to indicate that RRB5 to RRB9 belong to space-division-capable resources; and the UE3 adopts a D-MIMO transmission mode, PRB resources (namely RRB0 to RRB 2) allocated to the UE3 are marked as D-MIMO, and belong to non-space-division resources.

It can be seen that if the number of the TRP to which the first ue belongs is greater than or equal to the first preset threshold, a D-MIMO transmission mode based on NC-JT is adopted for the first ue, i.e. each layer of data can only be mapped to one of the TRP to which it belongs. The network device can adaptively select RANK and MCS on the channel of the corresponding TRP according to the channel condition of the first user device, so as to improve the stream number and throughput of the user by using the spatial distribution characteristic of the multiple TRPs.

The network equipment only carries out PUSCH channel estimation and joint detection on the channel on the first user equipment attributive TRP for uplink data reception; for downlink data transmission, the network device only transmits the downlink signal of the first user device on the TRP to which the first user device belongs. For example, UEi is attributed to TPR1 and TRP2, then the uplink and downlink signals of the network device are transmitted and received on all channels of TRP1 and TRP2, respectively. In this way, only the home TRP is transmitted or received, and the transmitted and received TPR is reduced, so that the interference can be reduced.

In addition, assuming uplink and downlink channel reciprocity (i.e., uplink and downlink channel estimation is the same), downlink TRP selection may be performed according to the selection of uplink TRP. However, for uplink/downlink common channels, for example, a physical downlink control channel (Physical Downlink Control Channel, PDCCH), a Synchronization Signal (SSB), a physical random access channel (Physical Random Access Channel, PRACH), etc., all channels on all TRP of a cell need to be received/transmitted.

Therefore, in the case that the remaining resources of the cell covered by the network device cannot meet the data transmission requirement of the user device in the current time slot and the first user device belongs to the single TRP near point user device, the network device can select a space division Physical Resource Block (PRB) which can be used by the first user device, and then perform data transmission with the first user device on each channel of the first transmission panel to which the first user device belongs through the selected PRB.

acquiring a third parameter smaller than a fifth preset threshold;

The third parameter may be a signal-to-interference-and-noise ratio of the first user equipment after the signal-to-interference-and-noise ratios of the channels of the second transmission panel are combined; the fourth parameter may be a signal-to-interference-and-noise ratio of the candidate ue after the signal-to-interference-and-noise ratios of the channels of the first transmission panel are combined.

For example, if the first UE is UE1 (belonging to TRP 1) and the number of allocated PRB resources is smaller than the first preset threshold, if the UEs include UE2 (belonging to TRP 2), UE3 (belonging to TRP 1) and UE4 (belonging to TRP 4), then the UE2 to UE4 needs to be selected from the UEs with different TRP than the UE1, namely UE2 and UE4; then, the combined signal-to-interference-and-noise ratio (referred to as SINR) of each channel of the UE1 on the TRP2 is calculated _1,2 ) The combined signal-to-interference-and-noise ratio (denoted as SINR) of each channel of UE1 on TRP4 _1,4 ) And the combined signal-to-interference-and-noise ratio (denoted as SINR) of the respective channels of UE2 on TRP1 _2,1 ) The combined signal-to-interference-and-noise ratio (denoted as SINR) of each channel of UE4 on TRP1 _4,1 ) Wherein, SINR _1,2 Sum SINR _1,4 The third parameter, SINR _2,1 Sum SINR _4,1 And is the fourth parameter described above; second, if SINR _1,j <SINR _THR2 And SINR _j,1 <SINR _THR2 (j is 2 and/or 4), the UE j and the UE1 meet the isolation requirement, for example, the UE2 and the UE4 both meet the isolation requirement, one UE may be selected from the two UEs, and the PRB resources allocated to the selected UE may be determined as the available space-division resources for the UE 1.

For example, in the above example, each of UE2, UE4 and UE1 satisfies the above isolation requirement, where if the number of PRBs allocated to UE2 and the number of PRBs allocated to UE4 are both greater than or equal to the number of PRBs required by UE1 in the current slot, then from the PRBs allocated to UE2 and the PRBs allocated to UE4, the PRB with the smallest number is selected as the available space-division PRB for UE 1; if the number of PRBs allocated to UE2 and the number of PRBs allocated to UE4 are smaller than the number of PRBs required by UE1 in the current slot, the PRB with the largest number is selected as the available space-division PRB for UE1 from the PRBs allocated to UE2 and the PRBs allocated to UE 4.

Optionally, the method further comprises:

The number of the first transmission panels to which the first user equipment belongs is smaller than the first preset threshold value, and the first parameter of the first user equipment in the first transmission panel is smaller than or equal to the second preset threshold value, which indicates that the first user equipment is not in the TRP overlapping coverage area and is not in the single TPR near point user equipment.

It can be known that, in the embodiment of the present invention, if the first ue does not have the home TRP, or if the first ue is not in the TRP overlapping coverage area, or does not belong to the single TPR near point ue, it indicates that the first ue cannot use D-MIMO or SDMA, and only can use conservative scheduling, that is, an operation mode of performing total transmission and total reception on the first ue by all channels of all TRPs in the network device.

In addition, when the user equipment to be scheduled includes uplink user equipment to be scheduled and downlink user equipment to be scheduled, the uplink user equipment to be scheduled needs to be ordered according to a predetermined uplink priority order, and the downlink user equipment to be scheduled needs to be ordered according to a predetermined downlink priority order.

It can be seen that, in the embodiment of the present invention, after the user equipment to be scheduled is ordered according to the priority order, the foregoing steps 501 to 503 are sequentially executed for each user equipment according to the order.

In summary, as shown in fig. 7, a specific implementation manner of the data transmission method according to the embodiment of the present invention is specifically described in the following steps H1 to H13:

step H1: determining TRP to which the UE to be scheduled belongs, namely performing PUSCH and SRS channel estimation on all the UEs in a cell covered by the base station, and judging user position attribute, channel attribution and TRP attribution according to estimation results, wherein the method specifically comprises the following steps:

And the base station periodically carries out SRS channel estimation on all the UE covered by the cell, and carries out PUSCH channel estimation on all the UE covered by the cell when uplink service scheduling exists.

When a channel estimation result is needed to be used for determining the TRP to which the UE belongs, whether the PUSCH channel estimation result is in the effective period or not is preferentially considered, if not, whether the SRS channel estimation result is in the effective period is judged, if not, the UE cannot use D-MIMO or SDMA, and only conservative scheduling is adopted, namely, all channels of all TRPs in the base station can carry out the working mode of total transmission and total reception on the UE.

In addition, the process of determining the TRP to which the UE belongs according to the PUSCH channel estimation result, the process of determining the TRP to which the UE belongs according to the SRS channel estimation result, and the two methods are similar, and the following description is made by taking the SRS channel estimation result as an example:

the physical layer uplink signal measurement module of each TRP in the cell carries out periodical SRS channel estimation and SRS validity judgment on the UE, and the channel estimation result Hi of the UE in the receiving channel k of TRP j can be obtained through smoothing among subcarriers _,j,k Thereby according to Hi _,j,k The SRS signal-to-interference-plus-noise ratio SINR of the UEi in the receiving channel k of TRPj can be calculated _i,j,k Further, the SINR after combining the receiving channels of the UEi in the TPRj can be calculated _i,j (i.e., the SRS signal-to-interference-and-noise ratio after multi-antenna combining for TRPj by UEi).

If SINR _i,j,k >SINR _THR1 (i.e., a predetermined threshold), then receive channel k is the selected transmit-receive channel of UE i and TRP j is the home TRP of UE i. That is, when a UE belongs to a certain uplink channel (i.e., a receiving channel), the TRP to which the uplink channel belongs is the TRP to which the UE belongs.

Wherein, in order to reduce the complexity of the algorithm, if the signal-to-interference-and-noise ratio on at least one receiving channel is larger than the SINR for the UEi _THR1 If the number of TRPs of (a) is greater than 2, then these TPRs satisfying the conditions are determined as candidate TRPs of UEi (i.e. if SINR _i,j,k >SINR _THR1 TRPj thenCandidate TRP for UEi), and then selecting SINR from the candidate TRP _i,j The largest 2 TRPs (i.e. the signal-to-noise ratio after multi-antenna combining) are taken as the TRPs to which the UEi belongs, and accordingly, the attribution channel of the UEi in the two TRPs is the same as that selected before; if the number of candidate TRPs of the UEi is 1, this TRP is determined as the TRP to which the UEi belongs.

Step H2: and for uplink and downlink, sequencing the priority of the users to be scheduled in the cell according to the scheduling priority.

Step H3: and selecting the UE with the highest priority in the queue to be scheduled.

Step H4: judging whether the residual resources in the current time slot of the cell meet the data transmission requirement of the UE (namely judging whether the number of the residual PRBs in the current time slot of the cell is larger than or equal to the minimum number of the PRBs required by the UE to transmit data in the current time slot), if so, entering a step H5; otherwise, step H10 is entered.

Step H5: judging whether the UE is located in the TRP overlapping coverage area, if so, entering a step H6, otherwise, entering a step H7.

Step H6: scheduling by adopting a D-MIMO mode, and then entering a step H12;

if the number of the attributive TRP of the UE is equal to 2, a D-MIMO transmission mode based on NC-JT is adopted for the UE, namely each layer of data can only be mapped in one attributive TRP.

The base station adaptively selects RANK and MCS according to the channel condition of the UE, so as to improve the number of transmission streams and throughput of the user by using the spatial distribution characteristic of multiple TRPs.

In addition, for uplink data reception, the base station only carries out PUSCH channel estimation and joint detection on the channel on the user attribution TRP; for uplink data transmission, the base station only transmits the channel on the user-attributed TRP, so that the number of the received or transmitted TRP is reduced, and the interference can be reduced.

Further, by setting the reciprocity of the uplink and downlink channels (i.e., the channel estimation of the uplink and downlink is the same), the selection of the downlink transmission TRP can be performed according to the selection of the uplink reception TRP. But for uplink/downlink common channels, for example PDCCH, SSB, PRACH, etc., all channels on all TRP of the cell need to be received/transmitted.

In addition, since the currently selected home TRP maximum value is 2, the influence of multi-antenna combining noise floor elevation on the reception performance is temporarily not considered. Otherwise, the receive antenna selection needs to be considered further.

Step H7: judging whether the UE belongs to a single TRP near point user, if so, entering a step H8, otherwise, entering a step H9.

Wherein the signal-to-interference-and-noise ratio after multi-antenna combination of one TRP is attributed to the UE and is larger than the SINR _{Thr_combine} The UE belongs to a single TRP near point user.

Step H8: and allocating available PRB resources for the transmission of the UE from the rest PRBs, marking the PRB resources as available space division resources, and entering step H12.

Step H9: adopting conservative scheduling to the UE, and then entering into step H12;

the user and common channel scheduling of the home channel and home TRP cannot be judged, and the conservative scheduling is adopted, namely, all channels of all TRPs of the base station are used for carrying out the working mode of total transmission and total reception on the UE.

Step H10: judging whether the UE belongs to a single TRP near point user, if so, entering a step H11, otherwise, entering a step H12.

Step H11: and selecting the space-division-capable resources meeting the isolation requirement according to the data quantity to be transmitted of the UE, carrying out SDMA pairing transmission, and then entering step H12.

The isolation requirement is described as follows:

suppose that UE i, j are both single TRP near point users, UE i is attributed to TRP m, and UE j is attributed to TRP n. UE i has allocated PRB resource PRB _TRP _n The remaining PRBs in the cell cannot satisfy the transmission of UE j, and therefore UE j enters the SDMA pairing procedure. If the signal-to-noise ratio between UE i, j and TRP m, n satisfies the SINR _i,n <SINR _THR2 &SINR _j,m <SINR _THR2 And judging that the isolation degree between the UE i and the UE j meets the requirement of space division transmission.

If there are multiple segments of PRB resources satisfying the amount of data to be transmitted of the UE, the smallest PRB resource that can satisfy the transmission buffer (buffer) is selected, and if none of the PRB resources can be satisfied, the largest PRB resource is selected.

For example, the isolation degree between UE2 and UE1 and between UE4 and UE1 satisfies the space division transmission requirement, and if the number of PRBs allocated to UE2 and the number of PRBs allocated to UE4 are both greater than or equal to the number of PRBs required by UE1 to transmit data in the current slot, then from the PRBs allocated to UE2 and the PRBs allocated to UE4, the PRB with the smallest number is selected as the available space division PRB for UE 1; if the number of PRBs allocated to UE2 and the number of PRBs allocated to UE4 are smaller than the number of PRBs required for transmitting data in the current slot by UE1, the PRB with the largest number is selected as the available space-division PRB for UE1 from the PRBs allocated to UE2 and the PRBs allocated to UE 4.

Step H12: and removing the user from the user queue to be scheduled.

Step H13: and judging whether users remain in the user queue to be scheduled, if so, turning to a step H3, otherwise, ending the scheduling.

As can be seen from the above, the embodiments of the present invention can calculate the air interface isolation between each user and different TRPs according to the SRS and PUSCH SINR received by each antenna on each TRP, and adaptively determine the usage of the radio resource, i.e. SDMA or D-MIMO. For example: for the UE of which the TRP covers the overlapping area, the D-MIMO average flow number and the MCS can be improved by utilizing the spatial correlation among different TRPs, so that the throughput of the UE is improved; for single TRP near point UE and UE with better isolation from other TRP air interfaces, SDMA transmission is adopted, so that the spectrum resource utilization rate, the cell capacity and the throughput are improved.

Having described the data transmission method provided by the embodiment of the present invention, the data transmission device provided by the embodiment of the present invention will be described with reference to the accompanying drawings.

Referring to fig. 8, the embodiment of the present invention further provides a data transmission apparatus, which is applied to a network device, and the apparatus includes:

a first obtaining module 801, configured to obtain a first transmission panel to which a first user equipment to be scheduled belongs;

A first transmission module 802, configured to perform data transmission with the first user equipment by adopting a distributed multi-stream transmission manner when the number of physical resource blocks included in the target resource is greater than or equal to the number of minimum physical resource blocks required by the first user equipment to transmit data in the current time slot, and the number of the first transmission panel is greater than or equal to a first preset threshold;

a second transmission module 803, configured to perform data transmission with the first user equipment by using a space division multiplexing transmission mode when the number of physical resource blocks included in the target resource is less than the number of minimum physical resource blocks required by the first user equipment to transmit data in the current time slot, the number of the first transmission panel is less than the first preset threshold, and the first parameter of the first transmission panel is greater than the second preset threshold;

Optionally, the first obtaining module 801 includes:

a first obtaining submodule, configured to obtain a signal-to-interference-and-noise ratio of the first user equipment in each receiving channel of a target transmission panel, where the target transmission panel includes a transmission panel of the target cell;

the first selecting sub-module is used for selecting a target receiving channel, determining a target transmission panel to which the target receiving channel belongs as a candidate transmission panel, wherein the signal-to-dry ratio of the first user equipment in the target receiving channel is greater than or equal to a third preset threshold;

a second selecting sub-module, configured to select a first number of candidate transmission panels from the candidate transmission panels when the number of candidate transmission panels is greater than the first preset threshold, and determine the selected candidate transmission panels as the first transmission panels, where the first number is equal to the first preset threshold;

a determining submodule, configured to determine the candidate transmission panel as the first transmission panel when the number of the candidate transmission panels is less than or equal to the first preset threshold.

Optionally, the first obtaining submodule is specifically configured to:

Optionally, the apparatus further includes:

and the third transmission module is used for carrying out data transmission with the first user equipment on each channel of the target transmission panel under the condition that the second time interval is larger than the fifth preset threshold value.

Optionally, the second selection submodule is specifically configured to:

Optionally, the apparatus further includes:

the resource allocation module is configured to allocate resources for the first user equipment from the target resource when the number of physical resource blocks included in the target resource is greater than or equal to the number of minimum physical resource blocks required by the first user equipment to transmit data in the current time slot, the number of the first transmission panel is less than the first preset threshold, and the first parameter of the first transmission panel is greater than the second preset threshold.

Optionally, the first transmission module is specifically configured to:

Optionally, the second transmission module includes:

a space-division-capable resource determining sub-module, configured to determine a space-division-capable physical resource block that can be used by the first user equipment;

and the transmission sub-module is used for transmitting data with the first user equipment through the space-separable physical resource blocks and on each channel of the first transmission panel.

Optionally, the space-separable resource determination submodule is specifically configured to:

Acquiring a third parameter smaller than a fifth preset threshold;

Optionally, the space-division-capable resource determining sub-module is specifically configured to, when selecting a space-division-capable physical resource block that can be used by the first user equipment from physical resource blocks allocated to the third user equipment:

Optionally, the apparatus further includes:

and the fourth transmission module is used for carrying out data transmission with the first user equipment on each channel of a target transmission panel under the condition that the first user equipment does not have a transmission panel to which the first user equipment belongs, or under the condition that the number of the first transmission panels to which the first user equipment belongs is smaller than the first preset threshold value and the first parameter of the first transmission panel is smaller than or equal to the second preset threshold value, wherein the target transmission panel comprises the transmission panel of the target cell.

Optionally, the apparatus further includes:

the ordering module is used for ordering the plurality of user equipment to be scheduled according to a predetermined priority order to obtain a second ordering;

As can be seen from the foregoing, in the embodiment of the present invention, the network device may obtain the first transmission panel to which the first user device to be scheduled belongs, so that, when the number of physical resource blocks included in the target resource is greater than or equal to the number of minimum physical resource blocks required by the first user device to transmit data in the current time slot, and the number of first transmission panels is greater than or equal to the first preset threshold, a distributed multi-stream transmission mode (D-MIMO) is adopted to perform data transmission with the first user device, and when the number of physical resource blocks included in the non-target resource is greater than or equal to the number of minimum physical resource blocks required by the first user device to transmit data in the current time slot, and the number of first transmission panels is less than the first preset threshold, and the strength of the useful signal received by the first user device on the first transmission panel is greater than the second preset threshold, the data transmission is performed with the first user device by adopting a space division multiplexing mode (SDMA), where the target resource is the remaining physical resource blocks in the physical resource blocks pre-allocated to the target cell in the current time slot, and the target resource is the target cell is covered by the network device.

It should be noted that, in the embodiment of the present application, the division of the units is schematic, which is merely a logic function division, and other division manners may be implemented in actual practice. In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a processor-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the prior art or all or part of the technical solution, in the form of a software product stored in a storage medium, including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

It should be noted that, the above device provided in the embodiment of the present invention can implement all the method steps implemented in the method embodiment and achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those in the method embodiment in this embodiment are omitted.

The embodiment of the invention also provides a network device, as shown in fig. 9, which includes a memory 920, a transceiver 910, and a processor 900;

a memory 920 for storing a computer program;

a transceiver 910 for receiving and transmitting data under the control of the processor 900;

a processor 900 for reading the computer program in the memory 920 and performing the following operations:

when the number of physical resource blocks included in the target resource is greater than or equal to the number of the minimum physical resource blocks required by the first user equipment to transmit data in the current time slot, and the number of the first transmission panels is greater than or equal to a first preset threshold, the transceiver 910 is controlled to perform data transmission with the first user equipment in a distributed multi-stream transmission manner,

When the number of physical resource blocks included in the target resource is smaller than the number of minimum physical resource blocks required by the first user equipment to transmit data in the current time slot, and the number of the first transmission panels is smaller than the first preset threshold, and the first parameter of the first transmission panels is larger than the second preset threshold, the first user equipment controls the transceiver 910 to perform data transmission with the first user equipment in a space division multiplexing transmission mode;

Optionally, when the processor 900 obtains the first transmission panel to which the first user equipment to be scheduled belongs, the method is specifically used for:

Optionally, the processor 900 is specifically configured to, when acquiring the signal-to-interference-and-noise ratio of each receiving channel of the target transmission panel, obtain the signal-to-interference-and-noise ratio of the first user equipment:

Optionally, the processor 900 is further configured to:

Optionally, the processor 900 is specifically configured to, when selecting a first number of candidate transmission panels from the candidate transmission panels:

Optionally, the processor 900 is further configured to:

Optionally, when the processor 900 controls the transceiver 910 to perform data transmission with the first user equipment in a distributed multi-stream transmission manner, the method is specifically used for:

the transceiver 910 is controlled to perform data transmission with the first user equipment in a distributed multi-stream transmission manner on each channel of the first transmission panel.

Optionally, the processor 900 controls the transceiver 910 to perform data transmission with the first user equipment by using a space division multiplexing transmission mode, including:

the transceiver 910 is controlled to perform data transmission with the first user equipment through the spatially-separable physical resource blocks on each channel of the first transmission panel.

Optionally, when the processor 900 determines the space-division-capable physical resource block that can be used by the first user equipment, the method is specifically used for:

Acquiring a third parameter smaller than a fifth preset threshold;

Optionally, when the processor 900 selects the space-division-available physical resource block that can be used by the first user equipment from the physical resource blocks allocated to the third user equipment, the method specifically is used for:

Optionally, the processor 900 is further configured to:

Wherein in fig. 9, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by processor 900 and various circuits of memory represented by memory 920, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 910 may be a number of elements, i.e., include a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium, including wireless channels, wired channels, optical cables, etc. The processor 900 is responsible for managing the bus architecture and general processing, and the memory 920 may store data used by the processor 900 in performing operations.

Processor 900 may be a Central Processing Unit (CPU), application specific integrated circuit (Application Specific Integrated Circuit, ASIC), field programmable gate array (Field-Programmable Gate Array, FPGA) or complex programmable logic device (Complex Programmable Logic Device, CPLD), and processor 900 may also employ a multi-core architecture.

Embodiments of the present invention also provide a processor-readable storage medium storing a computer program for causing the processor to execute the above-described data transmission method.

The processor-readable storage medium may be any available medium or data storage device that can be accessed by a processor, including, but not limited to, magnetic storage (e.g., floppy disks, hard disks, magnetic tape, magneto-optical disks (MOs), etc.), optical storage (e.g., CD, DVD, BD, HVD, etc.), semiconductor storage (e.g., ROM, EPROM, EEPROM, nonvolatile storage (NAND FLASH), solid State Disk (SSD)), and the like.

It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, magnetic disk storage, optical storage, and the like) having computer-usable program code embodied therein.

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

These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.

Claims

1. A data transmission method, applied to a network device, the method comprising:

when the number of physical resource blocks included in the target resource is greater than or equal to the number of minimum physical resource blocks required by the first user equipment to transmit data in the current time slot, and the number of the first transmission panel is greater than or equal to a first preset threshold value, performing data transmission with the first user equipment by adopting a distributed multi-stream transmission mode;

2. The method according to claim 1, wherein the obtaining a first transmission panel to which the first user equipment to be scheduled belongs comprises:

3. The method of claim 2, wherein the obtaining the signal-to-interference-and-noise ratio of the first user equipment at each receiving channel of the target transmission panel comprises:

4. A method according to claim 3, characterized in that the method further comprises:

5. The method of claim 2, wherein selecting a first number of candidate transmission panels from the candidate transmission panels comprises:

6. The method of claim 1, wherein after the obtaining the first transmission panel to which the first user equipment to be scheduled belongs, the method further comprises:

7. The method of claim 1, wherein the data transmission with the first user device using the distributed multi-stream transmission method comprises:

8. The method of claim 1, wherein the performing data transmission with the first ue by using a space division multiplexing transmission method includes:

9. The method of claim 8, wherein the determining the spatially-separable physical resource blocks available to the first user device comprises:

Acquiring a third parameter smaller than a fifth preset threshold;

10. The method of claim 9, wherein the selecting the spatially-separable physical resource blocks available to the first user device from the physical resource blocks already allocated for the third user device comprises:

selecting user equipment with the minimum quantity of allocated physical resource blocks from a plurality of third user equipment meeting preset requirements under the condition that the plurality of third user equipment meeting the preset requirements exist, and determining the physical resource blocks allocated by the selected user equipment as space-division physical resource blocks which can be used by the first user equipment, wherein the preset requirements comprise the quantity of the physical resource blocks allocated for the third user equipment, and the quantity of the physical resource blocks which are larger than or equal to the minimum quantity of the physical resource blocks required by the first user equipment for transmitting data in the current time slot;

11. The method according to claim 1, wherein the method further comprises:

12. The method of claim 1, wherein prior to the obtaining the first transmission panel to which the first user equipment to be scheduled belongs, the method further comprises:

13. A network device comprising a memory, a transceiver, and a processor:

14. A data transmission apparatus for use with a network device, the apparatus comprising:

a first transmission module, configured to perform data transmission with the first user equipment by using a distributed multi-stream transmission manner when the number of physical resource blocks included in the target resource is greater than or equal to the number of minimum physical resource blocks required by the first user equipment to transmit data in the current time slot, and the number of the first transmission panel is greater than or equal to a first preset threshold;

15. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing the processor to perform the method of any one of claims 1 to 12.