CN116633489A - MCS (modulation and coding scheme) determining method, device and storage medium - Google Patents

Abstract

The application provides a method, a device and a storage medium for determining MCS, relates to the technical field of communication, and is used for solving the technical problem of low accuracy of the existing method for determining the MCS value. The MCS determination method includes: acquiring target data of adjacent cells; the adjacent cell is a cell adjacent to the target cell; the target data includes: signal strength of the channel state information reference signal, and/or physical resource block utilization; acquiring an initial MCS of a target terminal in a target cell; and determining the target MCS of the target terminal according to the target data and the initial MCS.

Description

MCS (modulation and coding scheme) determining method, device and storage medium

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method and apparatus for determining MCS, and a storage medium.

Background

Currently, in a New air interface (NR) communication system, a modulation and coding strategy (Modulation and Coding Scheme, MCS) of a downlink channel service adopts an adaptive modulation and coding (Adaptive Modulation and Coding, AMC) technology to determine an MCS value adopted by a scheduling User Equipment (UE), which specifically includes:

the UE needs to measure the downlink channel quality (Channel Quality Indication, CQI) through a channel state information reference signal (Channel State Information Reference Signal, CSI-RS) and report the measured CQI to the base station (gNodeB). And the base station determines the MCS value adopted for scheduling the UE in a table look-up mode according to the CQI reported by the UE.

However, in dense urban areas, because the overlapping area of the same-frequency adjacent areas has larger interference, the existing method for determining the MCS value has lower accuracy, thereby affecting the performance of the communication system.

Disclosure of Invention

The application provides an MCS (modulation and coding scheme) determining method, an MCS determining device and a storage medium, which are used for solving the technical problem of lower accuracy of the existing MCS value determining method.

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

in a first aspect, there is provided a MCS determining method, including: acquiring target data of adjacent cells; the adjacent cell is a cell adjacent to the target cell; the target data includes: signal strength of the channel state information reference signal, and/or physical resource block utilization; acquiring an initial MCS of a target terminal in a target cell; and determining the target MCS of the target terminal according to the target data and the initial MCS.

Optionally, determining the target MCS of the target terminal according to the target data and the initial MCS includes: determining the product of the signal strength of the synchronous signal of the target cell and a preset coefficient, and when the signal strength of the channel state information reference signal of the adjacent cell is larger than the product, reducing the initial MCS by a first preset value to obtain the target MCS; and/or when the utilization rate of the physical resource blocks of the adjacent cells is greater than the first preset value, the initial MCS is regulated down by a second preset value so as to obtain the target MCS.

Optionally, when the number of the neighboring cells is plural, acquiring the target data of the neighboring cells includes: determining the signal strength of the channel state information reference signal which is larger than the first preset signal strength in the signal strengths of a plurality of channel state information reference signals corresponding to a plurality of adjacent cells one by one as target data; and/or determining the physical resource block utilization rate which is larger than a second preset value in a plurality of physical resource block utilization rates corresponding to a plurality of adjacent cells one by one as target data.

Optionally, the MCS determination method further includes: acquiring the signal intensity of a synchronizing signal of each cell in a plurality of cells which report a switching event and have a distance from a target cell smaller than a preset distance in a preset time period; and determining the cells with the signal strength of the synchronous signals being greater than the second preset signal strength as adjacent cells.

Optionally, the MCS determination method further includes: a first terminal for acquiring a target cell and reporting a switching event; acquiring signal strength of channel state information reference signals of other cells received by a first terminal; and when the signal strength of the channel state information reference signals of other cells received by the first terminal is greater than the third preset signal strength, and the cell corresponding to the channel state information reference signal which is greater than the third preset signal strength is an adjacent cell, determining the first terminal as a target terminal.

In a second aspect, there is provided an MCS determining apparatus, comprising: an acquisition unit and a processing unit; an acquisition unit, configured to acquire target data of a neighboring cell; the adjacent cell is a cell adjacent to the target cell; the target data includes: signal strength of the channel state information reference signal, and/or physical resource block utilization; an acquisition unit, configured to acquire an initial MCS of a target terminal in a target cell; and the processing unit is used for determining the target MCS of the target terminal according to the target data and the initial MCS.

Optionally, the processing unit is specifically configured to: determining the product of the signal strength of the synchronous signal of the target cell and a preset coefficient, and when the signal strength of the channel state information reference signal of the adjacent cell is larger than the product, reducing the initial MCS by a first preset value to obtain the target MCS; and/or when the utilization rate of the physical resource blocks of the adjacent cells is greater than the first preset value, the initial MCS is regulated down by a second preset value so as to obtain the target MCS.

Optionally, when the number of neighboring cells is plural, the acquiring unit is specifically configured to: determining the signal strength of the channel state information reference signal which is larger than the first preset signal strength in the signal strengths of a plurality of channel state information reference signals corresponding to a plurality of adjacent cells one by one as target data; and/or determining the physical resource block utilization rate which is larger than a second preset value in a plurality of physical resource block utilization rates corresponding to a plurality of adjacent cells one by one as target data.

Optionally, the acquiring unit is further configured to acquire signal strength of a synchronization signal of each cell in a plurality of cells reporting the handover event and having a distance from the target cell less than a preset distance in a preset time period; and the processing unit is also used for determining the cell with the signal strength of the synchronous signal being greater than the second preset signal strength as the adjacent cell.

Optionally, the acquiring unit is further configured to acquire a first terminal in the target cell, and report a handover event; the acquisition unit is also used for acquiring the signal strength of the channel state information reference signals of other cells received by the first terminal; and the processing unit is further used for determining the first terminal as the target terminal when the signal strength of the channel state information reference signal of the other cells received by the first terminal is greater than the third preset signal strength and the cell corresponding to the channel state information reference signal which is greater than the third preset signal strength is the adjacent cell.

In a third aspect, there is provided an MCS determining 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; when the MCS determination device is operated, the processor executes computer-executable instructions stored in the memory to cause the MCS determination device to perform the MCS determination method of the first aspect.

The MCS determining means may be a network device or may be a part of a device in a network device, for example a system on a chip in a network device. The system on a chip is configured to support the network device to implement the functions involved in the first aspect and any one of its possible implementations, for example, to obtain, determine, and send data and/or information involved in the MCS determination method described above. The chip system includes a chip, and may also include other discrete devices or circuit structures.

In a fourth aspect, there is provided a computer readable storage medium comprising computer executable instructions which, when run on a computer, cause the computer to perform the MCS determination method of the first aspect.

In a fifth aspect, there is also provided a computer program product comprising computer instructions which, when run on MCS determining means, cause the MCS determining means to perform the MCS determining method as described in the first aspect above.

It should be noted that the above-mentioned computer instructions may be stored in whole or in part on a computer-readable storage medium. The computer readable storage medium may be packaged together with the processor of the MCS determining apparatus or may be packaged separately from the processor of the MCS determining apparatus, which is not limited by the embodiment of the present application.

The description of the second, third, fourth and fifth aspects of the present application may refer to the detailed description of the first aspect.

In the embodiment of the present application, the names of the above MCS determining apparatus do not constitute limitations on the devices or functional modules themselves, and in actual implementation, these devices or functional modules may appear under other names. For example, the receiving unit may also be referred to as a receiving module, a receiver, etc. Insofar as the function of each device or function module is similar to that of the present application, it falls within the scope of the claims of the present application and the equivalents thereof.

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

based on any one of the above aspects, the present application provides a MCS determining method, which may acquire target data of a neighboring cell. Wherein, the adjacent cell is a cell adjacent to the target cell, and the target data comprises: signal strength of the channel state information reference signal, and/or physical resource block utilization. Then, an initial MCS of the target terminal in the target cell may be acquired, and a target MCS of the target terminal may be determined according to the target data and the initial MCS.

As can be seen from the above, the MCS determining method provided by the embodiment of the present application can consider the influence of the neighboring cell on the target terminal by acquiring the target data of the neighboring cell when determining the target MCS of the target terminal, and further accurately determine the target MCS of the target terminal according to the target data and the initial MCS, thereby avoiding the technical problem of lower accuracy of the existing method for determining the MCS value when the co-frequency neighboring cell with larger interference in the overlapping region has interference influence on the target terminal.

The advantages of the first, second, third, fourth and fifth aspects of the present application may be referred to in the analysis of the above-mentioned advantages, and will not be described here again.

Drawings

Fig. 1 is an application scenario schematic diagram of an MCS determination method provided in an embodiment of the present application;

fig. 2 is a schematic hardware structure diagram of an MCS determining apparatus according to an embodiment of the present application;

fig. 3 is a schematic hardware diagram of a MCS determining apparatus according to an embodiment of the present application;

fig. 4 is a flowchart of a method for determining MCS according to an embodiment of the present application;

fig. 5 is a second schematic flow chart of an MCS determination method according to an embodiment of the present application;

fig. 6 is a flowchart of a method for determining MCS according to an embodiment of the present application;

fig. 7 is a flow chart diagram of a method for determining MCS according to an embodiment of the present application;

fig. 8 is a flowchart fifth of a method for determining MCS according to an embodiment of the present application;

fig. 9 is a flowchart sixth of a method for determining MCS according to an embodiment of the present application;

fig. 10 is a flow chart seventh of a MCS determination method according to an embodiment of the present application;

fig. 11 is a schematic structural diagram of an MCS determining apparatus according to an embodiment of the present application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

It should be noted that, in the embodiments of the present application, words such as "exemplary" or "such as" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g." in an embodiment should not be taken as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.

In order to clearly describe the technical solution of the embodiment of the present application, in the embodiment of the present application, the words "first", "second", etc. are used to distinguish identical items or similar items having substantially the same function and effect, and those skilled in the art will understand that the words "first", "second", etc. are not limited in number and execution order.

As described in the background art, in dense urban areas, the existing method for determining the MCS value has lower accuracy due to larger interference of overlapping areas of co-frequency adjacent areas, thereby affecting the performance of a communication system.

In view of the above problems, the present application provides a MCS determining method, which can acquire target data of a neighboring cell. Wherein, the adjacent cell is a cell adjacent to the target cell, and the target data comprises: signal strength of the channel state information reference signal, and/or physical resource block utilization. Then, an initial MCS of the target terminal in the target cell may be acquired, and a target MCS of the target terminal may be determined according to the target data and the initial MCS.

As can be seen from the above, the MCS determining method provided by the embodiment of the present application can consider the influence of the neighboring cell on the target terminal by acquiring the target data of the neighboring cell when determining the target MCS of the target terminal, and further accurately determine the target MCS of the target terminal according to the target data and the initial MCS, thereby avoiding the technical problem of lower accuracy of the existing method for determining the MCS value when the co-frequency neighboring cell with larger interference in the overlapping region has interference influence on the target terminal.

The MCS determining method is applicable to MCS determining systems. Fig. 1 shows one structure of the MCS determination system. As shown in fig. 1, the MCS determination system includes: target base station 101, neighboring base station 102, and terminal 103.

Wherein, the terminal 103 belongs to a target cell within the coverage area of the target base station 101, the neighboring base station 102 is a base station neighboring the target base station 101, and the cell covered by the neighboring base station 102 is a cell neighboring the target cell.

When there are a plurality of cells in the coverage area of the target base station 101, a cell adjacent to the target cell may be included in the plurality of cells.

In practical applications, any number of terminals may be included in a target cell within the coverage area of target base station 101. For ease of understanding, fig. 1 illustrates an example in which one terminal 103 is included in a target cell within the coverage of a target base station 101.

When there is an overlapping area of the neighboring cell and the target cell, communication signals of the neighboring cell may cause interference to the terminal 103. In this case, if the MCS value of the terminal 103 is determined according to a general method of determining the MCS value, accuracy is low, thereby affecting the performance of the communication system.

In the application, when determining the target MCS of the terminal 103, the target base station 101 adds the adjacent cell interference power and the adjacent cell load into the MCS calculation process, fully considers the determining factors of the adjacent cell interference on the MCS value, and improves the accuracy of determining the MCS value.

Alternatively, the target base station 101 and the adjacent base station 102 may be a base station or a base station controller for wireless communication. In the embodiment of the present application, the base station may be a base station (base transceiver station, BTS) in a global system for mobile communications (global system for mobile communication, GSM), a base station (base transceiver station, BTS) in a code division multiple access (code division multiple access, CDMA), a base station (node B) in a wideband code division multiple access (wideband code division multiple access, WCDMA), a base station (eNB) in an internet of things (internet of things, ioT) or a narrowband internet of things (NB-IoT), a base station in a future 5G mobile communication network or a future evolved public land mobile network (public land mobile network, PLMN), which is not limited in this embodiment of the present application.

Alternatively, the terminal 103 may be a device that provides voice and/or data connectivity to a user, a handheld device with wireless connectivity, or other processing device connected to a wireless modem. The wireless terminal may communicate with one or more core networks via a radio access network (radio access network, RAN). The wireless terminals may be mobile terminals such as mobile telephones (or "cellular" telephones) and computers with mobile terminals, as well as portable, pocket, hand-held, computer-built-in or car-mounted mobile devices which exchange voice and/or data with radio access networks, e.g. cell phones, tablet computers, notebook computers, netbooks, personal digital assistants (personal digital assistant, PDA).

The basic hardware structure of the target base station 101 includes elements included in the MCS determination apparatus shown in fig. 2 or 3. The hardware configuration of the target base station 101 will be described below using the MCS determination apparatus shown in fig. 2 and 3 as an example.

Fig. 2 is a schematic diagram of a hardware structure of an MCS determining apparatus according to an embodiment of the present application. The MCS determination device comprises a processor 21, a memory 22, a communication interface 23, a bus 24. The processor 21, the memory 22 and the communication interface 23 may be connected by a bus 24.

The processor 21 is a control center of the MCS determination apparatus, and may be one processor or a collective term of a plurality of processing elements. For example, the processor 21 may be a general-purpose central processing unit (central processing unit, CPU), or may be another general-purpose processor. Wherein the general purpose processor may be a microprocessor or any conventional processor or the like.

As one example, processor 21 may include one or more CPUs, such as CPU 0 and CPU 1 shown in fig. 2.

The memory 22 may be, but is not limited to, a read-only memory (ROM) or other type of static network access device that can store static information and instructions, a random access memory (random access memory, RAM) or other type of dynamic network access device that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), magnetic disk storage or other magnetic network access 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.

In a possible implementation, the memory 22 may exist separately from the processor 21, and the memory 22 may be connected to the processor 21 by a bus 24 for storing instructions or program code. The MCS determination method provided in the following embodiments of the present application can be implemented when the processor 21 calls and executes instructions or program codes stored in the memory 22.

In the embodiment of the present application, the software program stored in the memory 22 is different for the target base station 101, so the functions realized by the target base station 101 are different. The functions performed with respect to the respective devices will be described in connection with the following flowcharts.

In another possible implementation, the memory 22 may also be integrated with the processor 21.

A communication interface 23 for connecting the MCS determination means with other devices via a communication network, which may be an ethernet, a radio access network, a wireless local area network (wireless local area networks, WLAN) or the like. The communication interface 23 may include a receiving unit for receiving data, and a transmitting unit for transmitting data.

Bus 24 may be an industry standard architecture (industry standard architecture, ISA) bus, an external device interconnect (peripheral component interconnect, PCI) bus, or an extended industry standard architecture (extended industry standard architecture, EISA) bus, among others. The bus may be classified as an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in fig. 2, but not only one bus or one type of bus.

Fig. 3 shows another hardware configuration of the MCS determining apparatus in the embodiment of the present application. As shown in fig. 3, the MCS determining means may comprise a processor 31 and a communication interface 32. The processor 31 is coupled to a communication interface 32.

The function of the processor 31 may be as described above with reference to the processor 21. The processor 31 also has a memory function and can function as the memory 22.

The communication interface 32 is used to provide data to the processor 31. The communication interface 32 may be an internal interface of the MCS determination device or an external interface of the MCS determination device (corresponding to the communication interface 23).

It is noted that the structure shown in fig. 2 (or fig. 3) does not constitute a limitation of the MCS determination apparatus, and the MCS determination apparatus may include more or less components than illustrated in fig. 2 (or fig. 3), or may combine some components, or may be arranged in different components.

The MCS determining method provided by the embodiment of the present application is described in detail below with reference to the accompanying drawings.

The MCS determination method provided by the embodiment of the present application is applied to the target base station 101 in the MCS determination system shown in fig. 1, as shown in fig. 4, and the MCS determination method provided by the embodiment of the present application includes:

S401, the target base station acquires target data of the adjacent cells.

Wherein the neighboring cell is a cell neighboring the target cell. The target data includes: signal strength of the channel state information reference signal, and/or physical resource block utilization.

Alternatively, when a plurality of cells are included in the coverage area of the target base station, the plurality of cells may include the target cell and cells adjacent to the target cell. In this case, since the neighboring cell is a cell within the coverage of the target base station, the target base station can directly acquire the target data of the neighboring cell.

Alternatively, when the neighboring cell is a cell within the coverage area of the neighboring base station, the target base station may acquire the target data of the neighboring cell from the neighboring base station based on the Xn interface.

The Xn interface is a network interface between gNodeBs, and information interaction between base stations comprises neighbor information and is realized through the Xn interface.

S402, the target base station acquires the initial MCS of the target terminal in the target cell.

Optionally, the initial MCS of the target terminal may be preset according to the service requirement of the target terminal, or may be determined by the target base station in the previous period, which is not limited in the embodiment of the present application.

S403, the target base station determines the target MCS of the target terminal according to the target data and the initial MCS.

According to the method, when the target base station determines the target MCS of the target data, the adjacent cell interference power and the adjacent cell load are added into the MCS calculation process, determining factors of the adjacent cell interference on the MCS value are fully considered, and accuracy of determining the MCS value is improved.

In one implementation manner, referring to fig. 4, as shown in fig. 5, the method for determining, by the target base station, the target MCS of the target terminal according to the target data and the initial MCS specifically includes:

s501, the target base station determines the product of the signal strength of the synchronous signal of the target cell and a preset coefficient, and when the signal strength of the channel state information reference signal of the adjacent cell is larger than the product, the initial MCS is reduced by a first preset value to obtain the target MCS.

Specifically, when the signal strength of the channel state information reference signal of the adjacent cell is greater than the product, the load of the adjacent cell is higher, and the interference of the adjacent cell to the target cell is correspondingly higher. In this case, in order not to affect the communication performance of the target terminal, the target base station may lower the initial MCS of the target terminal by a first preset value to obtain the target MCS.

Alternatively, the target base station may calculate a block error rate (Block Error Ratio, BLER) based on the initial MCS, and the BLER may reflect how well the initial MCS matches the actual channel quality. In this case, in the MCS value adjustment process, the target base station may obtain the MCS value adjustment amount Δmcs, i.e., the first preset value, according to the BLER.

In one implementation manner, referring to fig. 4, as shown in fig. 6, the method for determining, by the target base station, the target MCS of the target terminal according to the target data and the initial MCS specifically includes:

s601, when the utilization rate of the physical resource blocks of the adjacent cells is larger than a first preset value, the target base station regulates down the initial MCS by a second preset value to obtain the target MCS.

Specifically, when the physical resource block utilization rate of the adjacent cell is greater than the first preset value, the load of the adjacent cell is higher, and the interference of the adjacent cell to the target cell is correspondingly higher. In this case, in order not to affect the communication performance of the target terminal, the target base station may lower the initial MCS of the target terminal by a second preset value to obtain the target MCS.

Optionally, in the MCS value adjustment process, the target base station may obtain an MCS value adjustment Δmcs, that is, a second preset value, according to the BLER.

Alternatively, the second preset value and the first preset value may be the same value or different values.

In one implementation manner, referring to fig. 4, when the number of neighboring cells is plural, as shown in fig. 7, the method for the target base station to acquire the target data of the neighboring cells specifically includes:

s701, the target base station determines the signal strength of the channel state information reference signal which is larger than the first preset signal strength in the signal strengths of a plurality of channel state information reference signals corresponding to a plurality of adjacent cells one by one as target data.

Specifically, when the signal strength of the channel state information reference signal of the adjacent cell is greater than the first preset signal strength, interference can be generated on the target cell, and the reference significance is achieved when the target MCS is determined later.

Accordingly, when the signal strength of the channel state information reference signal of the adjacent cell is smaller than or equal to the first preset signal strength, no interference is generated to the target cell or the interference generated to the target cell is lower, so that when the target MCS is determined, the channel state information reference signals with lower signal strengths have no reference meaning.

Accordingly, the target base station may determine, as the target data, a signal strength of the channel state information reference signal greater than the first preset signal strength among signal strengths of the plurality of channel state information reference signals corresponding to the plurality of neighboring cells one to one.

In one implementation manner, referring to fig. 4, when the number of neighboring cells is plural, as shown in fig. 8, the method for the target base station to acquire the target data of the neighboring cells specifically includes:

s801, the target base station determines the physical resource block utilization rate which is larger than a second preset value in a plurality of physical resource block utilization rates corresponding to a plurality of adjacent cells one by one as target data.

Specifically, when the physical resource block utilization rate of the adjacent cell is greater than a second preset value, interference can be generated on the target cell, and the reference significance is achieved when the target MCS is determined later.

Accordingly, when the physical resource block utilization rate of the adjacent cell is smaller than or equal to the second preset value, no interference is generated to the target cell or the interference generated to the target cell is lower, so that the physical resource block utilization rate with smaller physical resource block utilization rate has no reference significance when determining the target MCS.

Therefore, the target base station may determine, as the target data, a physical resource block utilization rate greater than the second preset value among the plurality of physical resource block utilization rates corresponding to the plurality of neighboring cells one to one.

In one implementation, in conjunction with fig. 4, as shown in fig. 9, the MCS determining method further includes:

S901, a target base station acquires the signal intensity of a synchronous signal of each cell in a plurality of cells which report a switching event and have a distance smaller than a preset distance from a target cell within a preset time period.

Alternatively, the handover event may be an A3 event.

Specifically, when a terminal in a certain cell reports an A3 event to a target base station, it is indicated that the terminal is switched to the cell. And when the distance between the cell and the target cell is smaller than the preset distance, the target base station can determine that the cell is a neighboring cell to be selected.

S902, the target base station determines the cell with the signal strength of the synchronous signal being greater than the second preset signal strength as the adjacent cell.

Specifically, when the signal strength of the synchronizing signal of the adjacent cell to be selected is greater than the second preset signal strength, the interference to the target cell is generated, and the reference significance is achieved when the target MCS is determined later.

Accordingly, when the signal strength of the synchronization signal of the adjacent cell to be selected is smaller than or equal to the second preset signal strength, no interference is generated to the target cell or the interference generated to the target cell is low, so that the cells have no reference significance when determining the target MCS.

Therefore, the target base station may determine a cell in which the signal strength of the synchronization signal is greater than the second preset signal strength as the neighboring cell.

In one implementation, in conjunction with fig. 9, as shown in fig. 10, the MCS determining method further includes:

s1001, the target base station acquires a first terminal in a target cell and reports a switching event.

Alternatively, the handover event may be an A3 event.

Specifically, when a terminal reports an A3 event to a target base station, it is indicated that the terminal is in a co-coverage area of the target cell and a neighboring cell (the co-coverage area is only used for switching cells).

S1002, a target base station acquires signal strength of channel state information reference signals of other cells received by a first terminal.

S1003, when the signal strength of the channel state information reference signal of the other cells received by the first terminal is greater than the third preset signal strength, and the cell corresponding to the channel state information reference signal greater than the third preset signal strength is the adjacent cell, the target base station determines the first terminal as the target terminal.

Specifically, when the signal strength of the channel state information reference signal of the other cell received by the first terminal is greater than the third preset signal strength, and the cell corresponding to the channel state information reference signal greater than the third preset signal strength is an adjacent cell, the method is meaningful when the target MCS of the terminal is determined subsequently. Therefore, when the signal strength of the channel state information reference signal of the other cells received by the first terminal is greater than the third preset signal strength, and the cell corresponding to the channel state information reference signal greater than the third preset signal strength is the adjacent cell, the target base station determines the first terminal as the target terminal.

The application is described in detail below in connection with specific examples in connection with the various embodiments described above. The MCS determining method provided by the application comprises the following steps:

s1, a target base station determines a neighbor set of a target cell.

The neighbor set refers to a neighbor set with the strongest interference to the target cell. And the target base station can determine a neighbor set by counting neighbor cells reported by A3 events for a period of time.

For example, the target base station may set the period of the timer T to be 3S, count the neighbor cells reported by the A3 event in the 3S, and define the neighbor cell set N of the cell according to 12 neighbor cells with strongest SSB RSRP values reported by the neighbor cells.

S2, the target base station acquires target data of the adjacent cells.

Specifically, by pre-constructing a new function of the Xn port between adjacent cells, the target base station can acquire the strongest beam CSI-RS RSRP and PRB utilization rate of each adjacent cell in the adjacent cell set of the target cell.

For example, the target base station may trigger an Xn port between the target base station and the neighboring cell set to construct a new cell, and newly add an interface message, and based on the original Xn interface, the strongest beam CSI-RS RSRP of the neighboring cell information and the PRB utilization are interacted to the target cell, and are respectively defined as RSRP1, RSRP2, … and RSRP12; PRB1, PRB2, …, PRB12.

The neighbor cell interference corresponding to the target cell is defined as rsrpm=max { RSRP1, RSRP2, …, RSRP12}; corresponding neighbor load prbm=max { PRB1, PRB2, …, PRB12}.

S3, the target base station determines the target UE.

The target UE refers to a neighboring cell with the A3 event reporting, and the maximum CSI-RS RSRP received by the target UE is the UE in the neighboring cell set of the target cell.

For example, the target base station selects a UE with an A3 event reporting, and the received neighboring cell with the maximum CSI-RS RSRP is in the neighboring cell set N of the target cell, which is the target UE that needs to adjust the MCS algorithm, and defines as UE1, UE2, and … UEn.

S4, the target base station adjusts the initial MCS of the target UE according to the adjacent cell interference and the load condition to obtain the target MCS.

For example, for UEn, in calculating the target MCS, the target base station may calculate the BLER from the initial MCS. The BLER reflects how well the last MCS value was matched to the actual channel quality.

Then, the target base station may perform MCS value adjustment according to the BLER value, and obtain an MCS value adjustment amount Δmcs.

In the effective time of the timer T, the target base station corrects the delta MCS according to the RSRPm and the PRBm in S2, specifically:

And if RSRPm is more than 0.9 and the target cell access level value or PRBm is more than 90 percent, the MCS is calculated by reducing the first step level on the delta MCS.

If RSRPm <1.1 x target cell access level value or PRBm <50%, MCS calculation is performed by increasing one step on Δmcs.

Other cases Δmcs remains unchanged.

S5, the target base station sends data with more accurate target MCS according to the IBLER target value of the target UE, so that the system spectrum efficiency is improved.

The foregoing description of the solution provided by the embodiments of the present application has been mainly presented in terms of a method. To achieve the above functions, it includes corresponding hardware structures and/or software modules that perform 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 implemented as hardware or computer software driven 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 application.

The embodiment of the application can divide the function modules of the MCS determining device according to the method example, for example, each function module can be divided corresponding to each function, or two or more functions can be integrated in one processing module. The integrated modules may be implemented in hardware or in software functional modules. Optionally, the division of the modules in the embodiment of the present application is schematic, which is merely a logic function division, and other division manners may be implemented in practice.

Fig. 11 is a schematic structural diagram of an MCS determining apparatus according to an embodiment of the present application. The MCS determining apparatus may be used to perform the methods of MCS determination shown in fig. 4-10. The MCS determination apparatus shown in fig. 11 includes: an acquisition unit 1101 and a processing unit 1102;

an acquisition unit 1101 for acquiring target data of a neighboring cell; the adjacent cell is a cell adjacent to the target cell; the target data includes: signal strength of the channel state information reference signal, and/or physical resource block utilization;

an obtaining unit 1101, configured to obtain an initial MCS of a target terminal in a target cell;

And the processing unit 1102 is configured to determine a target MCS of the target terminal according to the target data and the initial MCS.

Optionally, the processing unit 1102 is specifically configured to:

determining the product of the signal strength of the synchronous signal of the target cell and a preset coefficient, and when the signal strength of the channel state information reference signal of the adjacent cell is larger than the product, reducing the initial MCS by a first preset value to obtain the target MCS;

and/or when the utilization rate of the physical resource blocks of the adjacent cells is greater than the first preset value, the initial MCS is regulated down by a second preset value so as to obtain the target MCS.

Alternatively, when the number of neighboring cells is plural, the acquiring unit 1101 is specifically configured to:

determining the signal strength of the channel state information reference signal which is larger than the first preset signal strength in the signal strengths of a plurality of channel state information reference signals corresponding to a plurality of adjacent cells one by one as target data;

and/or determining the physical resource block utilization rate which is larger than a second preset value in a plurality of physical resource block utilization rates corresponding to a plurality of adjacent cells one by one as target data.

Optionally, the obtaining unit 1101 is further configured to obtain, in a preset period of time, signal strength of a synchronization signal of each cell, where a distance between the cell and a target cell is smaller than a preset distance, and the handover event is reported;

The processing unit 1102 is further configured to determine a cell with a signal strength of the synchronization signal greater than a second preset signal strength as a neighboring cell.

Optionally, the obtaining unit 1101 is further configured to obtain a first terminal in the target cell that reports the handover event;

the obtaining unit 1101 is further configured to obtain signal strength of a channel state information reference signal of another cell received by the first terminal;

the processing unit 1102 is further configured to determine the first terminal as the target terminal when the signal strength of the channel state information reference signal of the other cell received by the first terminal is greater than the third preset signal strength, and the cell corresponding to the channel state information reference signal greater than the third preset signal strength is an adjacent cell.

The embodiment of the application also provides a computer readable storage medium, which comprises computer execution instructions, when the computer execution instructions run on a computer, cause the computer to execute the MCS determination method provided in the above embodiment.

The embodiment of the application also provides a computer program which can be directly loaded into a memory and contains software codes, and the computer program can realize the MCS determining method provided by the embodiment after being loaded and executed by a computer.

Those skilled in the art will appreciate that in one or more of the examples described above, the functions described in the present application may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, these functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer-readable storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

From the foregoing description of the embodiments, it will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of functional modules is illustrated, and in practical application, the above-described functional allocation may be implemented by different functional modules according to needs, i.e. the internal structure of the apparatus is divided into different functional modules to implement all or part of the functions described above.

In the several embodiments provided by the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the above-described embodiments of the apparatus are merely illustrative, and the division of modules or units, for example, is merely a logical function division, and other manners of division are possible when actually implemented. For example, multiple units or components may be combined or may be integrated into another device, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form. The units described as separate parts may or may not be physically separate, and the parts shown as units may be one physical unit or a plurality of physical units, may be located in one place, or may be distributed in a plurality of different places. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments 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 readable storage medium. Based on such understanding, the technical solution of the embodiments of the present application may be essentially or a part contributing to the prior art or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium, including several instructions for causing a device (may be a single-chip microcomputer, a chip or the like) or a processor (processor) to perform all or part of the steps of the method described in the embodiments of the present application. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk, etc.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present application should be included in the present application. Therefore, the protection scope of the application is subject to the protection scope of the claims.

Claims (12)

1. A method for determining MCS, comprising:

acquiring target data of adjacent cells; the adjacent cell is a cell adjacent to the target cell; the target data includes: signal strength of the channel state information reference signal, and/or physical resource block utilization;

acquiring an initial MCS of a target terminal in the target cell;

and determining the target MCS of the target terminal according to the target data and the initial MCS.

2. The MCS determination method according to claim 1, wherein the determining the target MCS of the target terminal according to the target data and the initial MCS comprises:

determining the product of the signal strength of the synchronous signal of the target cell and a preset coefficient, and when the signal strength of the channel state information reference signal of the adjacent cell is larger than the product, reducing the initial MCS by a first preset value to obtain the target MCS;

and/or when the physical resource block utilization rate of the adjacent cell is greater than a first preset value, the initial MCS is reduced by a second preset value so as to obtain the target MCS.

3. The MCS determination method according to claim 1 or 2, wherein the acquiring target data of the neighboring cells when the number of the neighboring cells is plural, comprises:

Determining the signal strength of the channel state information reference signal which is larger than the first preset signal strength in the signal strengths of a plurality of channel state information reference signals corresponding to a plurality of adjacent cells one by one as the target data;

and/or determining the physical resource block utilization rate which is larger than a second preset value in a plurality of physical resource block utilization rates corresponding to a plurality of adjacent cells one by one as the target data.

4. The MCS determination method according to claim 1 or 2, further comprising:

acquiring the signal intensity of a synchronizing signal of each cell in a plurality of cells which report a switching event and have a distance from the target cell smaller than a preset distance in a preset time period;

and determining the cells with the signal strength of the synchronous signals being greater than the second preset signal strength as the adjacent cells.

5. The MCS determination method according to claim 1 or 2, further comprising:

acquiring a first terminal in the target cell for reporting a switching event;

acquiring signal strength of channel state information reference signals of other cells received by the first terminal;

and when the signal strength of the channel state information reference signal of the other cells received by the first terminal is greater than a third preset signal strength, and the cell corresponding to the channel state information reference signal which is greater than the third preset signal strength is the adjacent cell, determining the first terminal as the target terminal.

6. An MCS determining apparatus, comprising: an acquisition unit and a processing unit;

the acquisition unit is used for acquiring target data of the adjacent cells; the adjacent cell is a cell adjacent to the target cell; the target data includes: signal strength of the channel state information reference signal, and/or physical resource block utilization;

the acquiring unit is further configured to acquire an initial MCS of a target terminal in the target cell;

and the processing unit is used for determining the target MCS of the target terminal according to the target data and the initial MCS.

7. The MCS determination device according to claim 6, wherein the processing unit is specifically configured to:

determining the product of the signal strength of the synchronous signal of the target cell and a preset coefficient, and when the signal strength of the channel state information reference signal of the adjacent cell is larger than the product, reducing the initial MCS by a first preset value to obtain the target MCS;

and/or when the physical resource block utilization rate of the adjacent cell is greater than a first preset value, the initial MCS is reduced by a second preset value so as to obtain the target MCS.

8. The MCS determination apparatus according to claim 6 or 7, wherein the acquisition unit is specifically configured to, when the number of the neighboring cells is plural:

determining the signal strength of the channel state information reference signal which is larger than the first preset signal strength in the signal strengths of a plurality of channel state information reference signals corresponding to a plurality of adjacent cells one by one as the target data;

and/or determining the physical resource block utilization rate which is larger than a second preset value in a plurality of physical resource block utilization rates corresponding to a plurality of adjacent cells one by one as the target data.

9. The MCS determining apparatus according to claim 6 or 7, characterized in that,

the acquisition unit is further configured to acquire signal strength of a synchronization signal of each cell in a plurality of cells in which a handover event is reported and a distance between the cell and the target cell is smaller than a preset distance within a preset time period;

the processing unit is further configured to determine, as the neighboring cell, a cell in which the signal strength of the synchronization signal is greater than the second preset signal strength.

10. The MCS determination apparatus according to claim 6 or 7, further comprising:

the acquisition unit is further configured to acquire a first terminal in the target cell, where the first terminal reports a handover event;

The acquiring unit is further configured to acquire signal strength of channel state information reference signals of other cells received by the first terminal;

the processing unit is further configured to determine the first terminal as the target terminal when the signal strength of the channel state information reference signal of the other cell received by the first terminal is greater than a third preset signal strength, and the cell corresponding to the channel state information reference signal greater than the third preset signal strength is the neighboring cell.

11. An MCS determining 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 executing the computer-executable instructions stored in the memory when the MCS determination apparatus is operating, to cause the MCS determination apparatus to perform the MCS determination method of any one of claims 1-5.

12. A computer readable storage medium comprising computer executable instructions which, when run on a computer, cause the computer to perform the MCS determination method according to any one of claims 1-5.