CN112911651B

CN112911651B - Physical transmission rate adjusting method and system

Info

Publication number: CN112911651B
Application number: CN201911230250.3A
Authority: CN
Inventors: 杨新玲; 江世宇; 张敏
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2019-12-04
Filing date: 2019-12-04
Publication date: 2022-11-08
Anticipated expiration: 2039-12-04
Also published as: CN112911651A

Abstract

The embodiment of the invention provides a method and a system for adjusting a physical transmission rate, wherein the method comprises the following steps: selecting a target adjacent cell according to the reported information of the UE; the target neighbor cell generates second Channel State Information (CSI) according to the first CSI preset by the serving cell; the UE determines a channel quality indication signal (CQI) according to the first CSI and the second CSI; the serving cell determines a conflict ratio according to the target neighboring cell resource occupation information and the resource occupation information of the UE; and calculating an equivalent CQI according to the CQI reported by the UE and the conflict ratio, and determining a Modulation Coding Scheme (MCS) corresponding to the equivalent CQI to adjust the physical transmission rate of the UE. More accurate CQI reference information is obtained in a target adjacent cell cooperation mode, the MCS of a channel is more matched with an actual channel, and therefore the spectrum efficiency and the user experience rate of an edge user terminal are improved.

Description

Physical transmission rate adjusting method and system

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method and a system for adjusting a physical transmission rate.

Background

Compared with the prior communication technology, the 5G NR needs to satisfy more diversified scenes and extreme performance challenges, where continuous wide coverage is the most basic coverage mode of mobile communication, and the 5G NR requires that users can obtain an experience rate of more than 100Mbps anytime and anywhere regardless of whether the users are stationary or moving at high speed, and the coverage center or the coverage edge, on the premise of ensuring user mobility and service continuity.

The ultra-dense networking can obtain higher frequency reuse efficiency through more dense wireless network infrastructure deployment, thereby realizing hundreds of times of system capacity improvement in local hot spot areas. However, with the more intensive deployment of cells and the overlapping of coverage areas, serious interference problems are caused, so that the performance difference between the access rates of the center and the edge of a cell in the existing network is large, and it is difficult to meet the requirement that users can obtain 100Mbps user experience rate anytime and anywhere under wide area coverage.

The existing downlink self-adaptation of 5G NR adopts a 4G mechanism, a serving cell sends a reference signal, UE feeds back CQI according to the measurement of the reference signal, and the serving cell selects MCS according to the CQI. As shown in fig. 4, a reference signal sent by a serving cell is divided into CSI-RS and CSI-IM, where the serving cell is to send the reference signal on a time-frequency domain resource corresponding to the CSI-RS, and a terminal is used to measure signal energy, and the serving cell is not to send any signal on the time-frequency domain resource corresponding to the CSI-IM, and the terminal is used to measure interference energy. And because the reporting of the CQI is periodic, the reported CQI deviates from the actual scheduling situation, so that the selected MCS does not conform to the current scheduling, the spectrum utilization rate is low, the communication rate of the UE is further influenced, and the requirement that the user can obtain the user experience rate of 100Mbps anytime and anywhere under wide area coverage is difficult to meet.

Disclosure of Invention

In view of the above, embodiments of the present invention are proposed to provide a physical transmission rate adjustment method and system that overcome or at least partially solve the above problems.

In order to solve the above problem, an embodiment of the present invention discloses a method for adjusting a physical transmission rate, where a serving cell, a plurality of neighboring cells, and a user equipment UE are connected to each other, the method including:

the serving cell presets first Channel State Information (CSI) of the UE;

the serving cell selects a target neighbor cell from the neighbor cells according to the reported information of the UE; wherein the serving cell includes resource occupancy information of the UE;

the target adjacent cell generates second Channel State Information (CSI) according to the first CSI sent by the serving cell; the target neighbor cell comprises target neighbor cell resource occupation information;

the UE determines a channel quality indication signal (CQI) according to the first CSI and the second CSI;

the serving cell determines a conflict proportion according to the target neighboring cell resource occupation information reported by the target neighboring cell and the resource occupation information of the UE;

the serving cell calculates an equivalent CQI according to the CQI reported by the UE and the conflict ratio, and determines a modulation coding scheme MCS corresponding to the equivalent CQI;

and the serving cell adjusts the physical transmission rate of the UE according to the MCS.

Optionally, the serving cell of the UE includes reference signal received powers, RSRPs, of the multiple neighboring cells, and the step of the serving cell selecting, according to the report information of the UE, a target neighboring cell from the multiple neighboring cells includes:

comparing the RSRP values of the plurality of neighboring cells;

selecting the neighbor cell with the maximum RSRP value as the target neighbor cell;

optionally, the step of generating, by the target neighboring cell according to the first CSI sent by the serving cell, second CSI including first CSI-RS information and first CSI-IM information includes:

the target adjacent cell determines that a first period of the first CSI-IM information is n according to the first CSI-RS information and the first CSI-IM information;

generating second CSI according to the first CSI-IM information with the first period of n;

wherein the second CSI comprises second CSI-RS information and second CSI-IM information;

the time-frequency domain characteristic of the second CSI-RS information is periodic, semi-persistent or aperiodic.

Optionally, when the time-frequency domain characteristic of the second CSI-RS information is periodicity, the step of generating the second CSI according to the first CSI-IM information with the first periodicity n includes:

according to the first CSI-IM information with the first period of n, determining second CSI-RS information with a second period of 2n and a second offset value of n, and second CSI-IM information with a second period of 2n and a second offset value of 0;

and generating second CSI according to the second CSI-RS information and the second CSI-IM information.

Optionally, when the time-frequency domain characteristic of the second CSI-RS information is semi-persistent, the step of generating the second CSI according to the first CSI-IM information with the first periodicity n further includes:

generating second CSI according to the second CSI-RS information and the second CSI-IM information;

wherein the second CSI further comprises a timing advance command MAC CE with a period of n;

and the MAC CE is used for indicating the target adjacent cell to send second CSI and indicating the UE to measure the first CSI.

Optionally, when the time-frequency domain characteristics of the second CSI-RS information are aperiodic, the generating the second CSI according to the first CSI-IM information with the first periodicity n further includes:

the target neighbor cell generates second CSI which is sent simultaneously with the first CSI according to the first CSI;

wherein the second CSI-RS information and the second CSI-IM information are alternately transmitted.

Optionally, the step of determining, by the UE, a channel quality indication signal CQI according to the first CSI and the second CSI includes:

the UE determines a first CQI of the UE under the condition of maximum interference according to the overlapping part of the first CSI-IM information and the second CSI-RS information;

and the UE determines a second CQI of the UE under the condition of no interference according to the overlapping part of the first CSI-IM information and the second CSI-IM information.

Optionally, after the step of presetting the first channel state information CSI of the UE by the serving cell, the method further includes:

the serving cell presets the reporting period of the CQI;

wherein the reporting period of the CQI is the same as the first period of the first CSI-IM information.

Optionally, the serving cell further includes overall resource occupation information, and the step of determining, by the serving cell, the conflict ratio according to the target neighboring cell resource occupation information reported by the target neighboring cell and the resource occupation information of the UE includes:

the serving cell determines the same part and different parts of the target neighboring cell resource occupation information and the resource occupation information of the UE according to the target neighboring cell resource occupation information reported by the target neighboring cell and the resource occupation information of the UE;

calculating the ratio of the same part to the whole resource occupation information as a first ratio;

calculating the ratio of the different parts to the whole resource occupation information as a second ratio;

and determining the conflict ratio as a first ratio.

Optionally, the step of calculating, by the serving cell, an equivalent CQI according to the CQI and the target neighboring cell resource occupancy information, and determining a modulation and coding scheme MCS corresponding to the equivalent CQI includes:

the serving cell adds and calculates an equivalent CQI according to the product of the first CQI and the first proportion and the product of the second CQI and the second proportion;

and determining a Modulation and Coding Scheme (MCS) corresponding to the equivalent CQI.

The embodiment of the present application further discloses a system for adjusting physical transmission rate, which includes a serving cell, a plurality of neighboring cells and a user equipment UE that are connected to each other, where the serving cell includes:

the first channel state information CSI presetting module is used for presetting the first channel state information CSI of the UE;

a target neighboring cell selection module, configured to select a target neighboring cell from the multiple neighboring cells according to the reported information of the UE; wherein the serving cell includes resource occupancy information of the UE;

a conflict ratio calculation module, configured to determine a conflict ratio according to the target neighboring cell resource occupation information reported by the target neighboring cell and the resource occupation information of the UE;

an MCS determining module, configured to calculate an equivalent CQI according to the CQI reported by the UE and the collision proportion, and determine a modulation and coding scheme MCS corresponding to the equivalent CQI;

a physical transmission rate adjusting module, configured to adjust a physical transmission rate of the UE according to the MCS;

the neighborhood region comprises:

a second CSI generation module, configured to generate a second CSI according to the first CSI sent by the serving cell; and the target adjacent cell comprises target adjacent cell resource occupation information.

The UE includes:

and a CQI determining module, configured to determine a Channel Quality Indicator (CQI) according to the first CSI and the second CSI.

Optionally, the serving cell of the UE includes reference signal received powers, RSRPs, of the multiple neighboring cells, and the target neighboring cell selecting module includes:

the RSRP value comparison module is used for comparing the RSRP values of the plurality of neighbor cells;

and the target adjacent cell selection submodule is used for selecting the adjacent cell with the maximum RSRP value as the target adjacent cell.

Optionally, the first CSI includes first channel state information reference signal CSI-RS information and first channel state information interference measurement CSI-IM information, and the second channel state information generating module includes:

the first cycle determining module is used for determining a first cycle of the first CSI-IM information as n according to the first CSI-RS information and the first CSI-IM information;

the information generation submodule is used for generating second CSI according to the first CSI-IM information with the first period of n;

the time-frequency domain characteristic of the second CSI-RS information is periodic, semi-persistent or aperiodic;

optionally, when the time-frequency domain characteristic of the second CSI-RS information is periodic, the information generating sub-module includes:

a period information determining unit, configured to determine, according to the first CSI-IM information with the first period being n, second CSI-RS information with a second period being 2n and a second offset value being n, and second CSI-IM information with the second period being 2n and the second offset value being 0;

and the period information generating unit is used for generating second CSI according to the second CSI-RS information and the second CSI-IM information.

Optionally, when the time-frequency domain characteristic of the second CSI-RS information is semi-persistent, the information generating sub-module further includes:

a semi-persistent information determining unit, configured to determine, according to the first CSI-IM information with the first period being n, second CSI-RS information with a second period being 2n and a second offset value being n, and second CSI-IM information with the second period being 2n and the second offset value being 0;

a semi-persistent information generating unit, configured to generate a second CSI according to the second CSI-RS information and the second CSI-IM information;

Optionally, when the time-frequency domain characteristic of the second CSI-RS information is aperiodic, the information generating sub-module further includes:

an aperiodic information generating unit, configured to generate, according to the first CSI, a second CSI that is sent simultaneously with the first CSI;

Optionally, the CQI generating module includes:

a first CQI determining submodule, configured to determine a first CQI of the UE under a maximum interference condition according to an overlapping portion of the first CSI-IM information and the second CSI-RS information;

a second CQI determining submodule, configured to determine a second CQI of the UE without interference according to an overlapping portion of the first CSI-IM information and the second CSI-IM information;

optionally, the serving cell in the system further includes:

a CQI reporting period configuration module for presetting the reporting period of the CQI;

Optionally, the serving cell further includes overall resource occupation information, and the collision ratio calculation module includes:

a resource occupation distinguishing sub-module, configured to determine, according to target neighboring cell resource occupation information reported by the target neighboring cell and resource occupation information of the UE, the same part and different parts of the target neighboring cell resource occupation information and the resource occupation information of the UE;

the first proportion calculation submodule is used for calculating the ratio of the same part to the whole resource occupation information as a first proportion;

the second proportion calculation submodule is used for calculating the ratio of the different parts to the whole resource occupation information as a second proportion;

and the conflict ratio determining submodule is used for determining the conflict ratio as a first ratio.

Optionally, the MCS determining module includes:

an equivalent CQI calculation sub-module for adding and calculating an equivalent CQI according to a product of the first CQI and the first ratio and a product of the second CQI and the second ratio;

and the MCS determining submodule is used for determining a modulation coding mode MCS corresponding to the equivalent CQI.

The embodiment of the invention has the following advantages:

in the embodiment of the invention, a serving cell selects a target neighbor cell from a plurality of neighbor cells according to the reporting information of User Equipment (UE) by acquiring the reporting information and first Channel State Information (CSI) of the UE and transmits the first CSI to the target neighbor cell; the target adjacent cell generates second CSI according to the first CSI; the target neighbor cell sends the second CSI to the serving cell and the UE; the UE measures the first CSI, determines a Channel Quality Indicator (CQI) and reports the CQI to the serving cell; and the target adjacent cell also sends the configuration information to the serving cell, and the serving cell determines a Modulation and Coding Scheme (MCS) adopted by the UE according to the CQI and schedules the physical transmission rate according to the MCS. By utilizing the cooperation between the service cells, the cooperative scheduling of the service cells and the target adjacent cells is realized, so that the service cells do not only rely on the CQI uploaded by the user terminals to perform scheduling when scheduling the physical transmission rate of the edge user terminals, but utilize the cooperation mode of the target adjacent cells to acquire more accurate CQI reference information, and the MCS used by the user is more matched with an actual channel, thereby improving the spectrum efficiency and the user experience rate of the edge user terminals.

Drawings

Fig. 1 is a flowchart illustrating a first embodiment of a method for adjusting a physical transmission rate according to the present invention;

FIG. 2 is a flowchart illustrating steps of a second embodiment of a method for adjusting physical transmission rate according to the present invention;

FIG. 3 is a block diagram of an embodiment of a physical transmission rate adjustment system of the present invention;

fig. 4 is a schematic diagram illustrating resource occupation of a physical transmission rate adjustment method according to the present invention;

fig. 5 is a schematic diagram of time-frequency resource collision of downlink data service in a physical transmission rate adjustment method according to the present invention;

fig. 6 is a diagram illustrating maximum interference of CQI measurement according to a physical transmission rate adjustment method of the present invention;

fig. 7 is a schematic diagram of a periodic configuration of a neighboring cell and a user equipment according to a method for adjusting a physical transmission rate of the present invention;

fig. 8 is a schematic diagram of a resource conflict between a neighboring cell and a user equipment according to a physical transmission rate adjustment method of the present invention.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

One of the core concepts of the embodiment of the invention is that a target adjacent cell with the strongest reference signal receiving power is selected, and the CSI-IM information which meets the interference measurement of the CSI-RS information and the CSI-IM information of the periodic offset configuration is configured in the target adjacent cell, so that the CSI-IM sent by a serving cell in an odd cycle is not interfered by the adjacent cell, and the CSI-IM sent by the serving cell in an even cycle is interfered; and further, the accuracy of the CQI (channel quality indicator) reported by the edge user equipment UE is improved, the MCS used by the user is more matched with an actual signal, and the spectrum use efficiency and the user experience rate of the edge user equipment are improved.

Referring to fig. 1, a flowchart illustrating a first step of a method for adjusting a physical transmission rate according to a first embodiment of the present invention is shown, where a serving cell, a plurality of neighboring cells, and a user equipment UE are connected to each other, and the method specifically includes the following steps:

step 101, the serving cell presets first Channel State Information (CSI) of the UE;

102, the serving cell selects a target neighboring cell from the neighboring cells according to the reported information of the UE; wherein the serving cell includes resource occupancy information of the UE;

103, the target neighboring cell generates second Channel State Information (CSI) according to the first CSI sent by the serving cell; the target neighbor cell comprises target neighbor cell resource occupation information;

step 104, the UE determines a channel quality indication signal (CQI) according to the first CSI and the second CSI;

step 105, the serving cell determines a conflict ratio according to the target neighboring cell resource occupation information reported by the target neighboring cell and the resource occupation information of the UE;

step 106, the serving cell calculates an equivalent CQI according to the CQI reported by the UE and the conflict ratio, and determines a modulation and coding scheme MCS corresponding to the equivalent CQI;

step 107, the serving cell adjusts the physical transmission rate of the UE according to the MCS.

Optionally, the serving cell may be a gNB or an eNB, and the embodiment of the present invention is not limited herein.

Channel State Information (CSI) is Channel State Information used by the UE to feed back downlink Channel quality to the gNB; therefore, the gNB selects a proper MCS for the transmission of the downlink data, and the BLER (Block error Rate) of the downlink data transmission is reduced.

A Channel Quality Indicator (CQI) is a signal for reflecting the Channel Quality of the physical downlink Channel PDSCH. The channel quality of PDSCH is represented by 0 to 15. 0 indicates the worst channel quality and 15 indicates the best channel quality. In a particular implementation, the UE sends CQI on PUCCH/PUSCH to the eNB. And the eNB determines whether the current spectrum efficiency is matched with a channel according to the CQI, and if not, the MSC is adjusted to be matched with the CQI so as to improve the physical transmission rate and further achieve the purpose of improving the spectrum efficiency of the UE.

Modulation and Coding Scheme (MCS) is used for rate configuration in LTE, and is represented in a rate table, which indicates a physical transmission rate under a set of parameters.

Since Downlink scheduling of a neighboring cell in the prior art is random, that is, on CSI-IM resources of a serving cell, the neighboring cell may schedule a Physical Downlink Channel (PDSCH) or may not schedule the PDSCH, and a result of the random may cause whether interference exists or not when the serving cell performs interference measurement, and also cause inaccurate CQI reported by a user terminal.

For example, if a downlink data service or other reference signals are scheduled by a neighboring cell on a time-frequency resource of CSI-IM, interference energy may be measured on the CSI-IM, and a CQI reported by a user terminal is relatively low, and if no downlink data or other reference signals are scheduled by the neighboring cell, interference energy may not be measured on the CSI-IM, and a CQI reported by the user terminal is relatively high; in addition, since the reporting of CQI is periodic, for downlink data service, if the serving cell uses CQI reported by the terminal to perform scheduling, the following situations may occur:

1) As shown in fig. 5, a downlink data service of a user terminal and downlink data of an adjacent cell have a conflict in physical transmission rate, but a CQI reported last time is a reported value based on CSI-IM without maximum interference, and at this time, an MCS used by the downlink data service is higher, and a data service has a high probability of error codes;

2) As shown in fig. 6, the downlink data service of the user terminal does not conflict with the downlink data of the neighboring cell at the physical transmission rate, but the CQI reported last time is the reported value based on the CSI-IM maximum interference, and at this time, the MCS used by the downlink data service is low, which wastes spectrum resources.

Both of the above two cases may cause mismatch between the MCS of the downlink data service and the actual channel, thereby causing a decrease in spectrum efficiency, and especially for cell edge users with severe maximum interference, the mismatch may cause a great decrease in spectrum efficiency and user experience rate.

The embodiment of the invention can be applied to a 5G wireless access (NR) scene, the report information and the first channel state CSI of the user terminal UE are obtained through a service cell, a target adjacent cell is selected from a plurality of adjacent cells according to the report information of the UE, and the first CSI is sent to the target adjacent cell; the target adjacent cell generates second CSI according to the first CSI; the target neighbor cell sends the second CSI to the serving cell and the UE; the UE determines a channel quality indication signal (CQI) according to the first CSI and the second CSI and reports the CQI to the serving cell; the serving cell determines a conflict proportion according to the target neighboring cell resource occupation information reported by the target neighboring cell and the resource occupation information of the UE; and the serving cell calculates an equivalent CQI according to the CQI reported by the UE and the conflict ratio, determines a Modulation Coding Scheme (MCS) corresponding to the equivalent CQI, and schedules the physical transmission rate according to the MCS. By utilizing the cooperation between the service cells, the cooperative scheduling of the service cell and the target adjacent cell is realized, so that the service cell does not only rely on the CQI uploaded by the user terminal to perform scheduling when scheduling the physical transmission rate of the edge user terminal, but utilizes the cooperation mode of the target adjacent cell to obtain more accurate CQI reference information, and the MCS used by a user is more matched with an actual channel, thereby improving the spectrum efficiency and the user experience rate of the edge user terminal.

Referring to fig. 2, a flowchart of steps of a second embodiment of a method for adjusting a physical transmission rate according to the present invention is shown. The method may comprise the steps of:

step 201, the serving cell presets a first channel state information CSI of the UE;

in this embodiment, the serving cell may determine an initial CQI and an initial MCS by presetting first channel state information CSI of the UE. And determining whether to adjust the MCS by comparing whether the initial MCS corresponds to the CQI.

Optionally, step 202 may be further included after step 201;

step 202, the serving cell presets the reporting period of the CQI;

In this embodiment, the serving cell may preset a reporting period of the CQI according to the first CSI; optionally, the CQI reporting period may be configured to be the same as the first period of the first CSI-IM information. For example, the first period of the first CSI-IM information is 2n, and the reporting period of the CQI may be set to 2n.

Step 203, the serving cell selects a target neighboring cell from the multiple neighboring cells according to the reported information of the UE; wherein the serving cell includes resource occupancy information of the UE;

in the embodiment of the present invention, when the UE processes an event at a first physical transmission rate corresponding to first channel state information CSI, the serving cell measures a channel state, and determines whether an MCS used at this time corresponds to a CQI in the UE report information, so as to determine whether a channel is interfered, and further determine whether the used MCS is matched. If not, the MCS needs to be corrected, and then the next operation is carried out.

Further, the serving cell further includes resource occupation information of the UE, where the resource occupation information of the UE is used to indicate a situation that the UE occupies resources of the serving cell.

In the embodiment of the present invention, the serving cell of the UE includes reference signal received power, RSRP, of the multiple neighboring cells.

Reference Signal Received Power (RSRP): one of the key parameters that may represent radio signal strength and physical layer measurement requirements in an LTE network is the average of the received signal power over all REs (resource elements) that carry reference signals within a certain symbol.

Optionally, the step 203 may further include the following sub-steps:

a substep 2031 of comparing the RSRP values of the plurality of neighboring cells;

in the embodiment of the application, each neighboring cell has a corresponding RSRP value, and according to the comparison between the corresponding RSRP values of the neighboring cells, the neighboring cell with the strongest coverage strength of the corresponding neighboring cells can be determined, so that the neighboring cell is used to assist in resource scheduling of the serving cell. The coverage intensity level of the neighboring cell may be divided into multiple levels from high to low, for example, six levels.

Substep 2032, selecting the neighboring cell with the maximum RSRP value as the target neighboring cell;

in the embodiment of the present application, a neighboring cell corresponding to the maximum RSRP value may be determined as a target neighboring cell according to the content in table 1, and since the RSRP value corresponds to the coverage strength of the neighboring cell, in 5G NR communication, the higher the coverage strength is, the higher the corresponding downlink frequency domain resource occupancy rate is, and further the influence on the UE may be larger, and the influence on the UE by other neighboring cells is relatively smaller. Therefore, the neighbor cell with the maximum RSRP value is directly selected as the target neighbor cell, so that the serving cell is assisted to correct the CQI of the UE, and the accuracy of the CQI can be effectively improved.

The RSRP value may be divided into coverage strength according to the following table 1:

TABLE 1

In a specific implementation, the UE reporting information may further include physical cell identity PCI information.

Physical Cell identity information (PCI): wireless signals for terminals in LTE to distinguish different cells.

Specifically, the serving cell may distinguish a plurality of neighboring cells according to the PCI information;

in the embodiment of the application, for the serving cell, the serving cell may be distinguished according to specific PCI information on a plurality of neighboring cells, so as to identify different neighboring cells and positions thereof; for the user terminal, the serving cell and different neighboring cells may be identified according to the PCI information.

Step 204, the target neighboring cell generates second Channel State Information (CSI) according to the first CSI sent by the serving cell;

in this embodiment of the present application, the serving cell may send the first CSI in multiple ways, for example, through an Xn link or inter-board communication, and the embodiment of the present application is not limited herein.

In a specific implementation, if the serving cells are independent networks (SA, standby), data exchange may be implemented through an Xn link, and if the serving cells are Non-independent networks (NSA, non-standby), data exchange may be implemented through an X2 link; if the UE is located in a station, the serving cell may implement data exchange in an inter-board communication manner, and specifically, each manufacturer may perform data communication according to different high-speed data communication links of different chips, which is not limited herein.

The first CSI comprises first channel state information reference signal (CSI-RS) information and first CSI-IM information;

channel State Information reference signal (CSI-RS), channel State Information-Resource Set): the method is used for estimating the channel state so as to send a feedback report to the gNB to assist in performing operations such as MCS selection, beamforming, MIMO rank selection, and resource allocation. The CSI-RS may be transmitted in a periodic, semi-persistent, and aperiodic manner depending on the configuration of the gNB.

Channel State Information Interference Measurement Information (CSI-IM): for the UE to measure whether there is interference from a neighboring cell.

Further, step 204 may include the following sub-steps:

substep 2041: the target neighbor cell determines that a first period of the first CSI-IM information is n according to the first CSI-RS information and the first CSI-IM information;

substep 2042: generating second CSI according to the first CSI-IM information with the first period of n;

optionally, the second CSI comprises second CSI-RS information and second CSI-IM information; the time-frequency domain characteristic of the second CSI-RS information is periodic, semi-persistent or aperiodic;

in order to avoid the irregular interference of the target adjacent cell to the User Equipment (UE), the first CSI-IM information and the second CSI-IM information need to be ensured to be overlapped on a time-frequency domain. That is to say, after the target neighboring cell receives the CSI-IM and CSI-RS configurations, the target neighboring cell configures a set of CSI-RS and a set of CSI-IM period that are 2N times of the CSI-IM period of the serving cell, and the offset configuration satisfies: and the target adjacent cell is configured with the CSI-IM of the same resource pattern as that of the service cell on the odd number period of the target adjacent cell, so that the CSI-IM on the odd number period is ensured not to be interfered by the adjacent cell, and simultaneously, the CSI-RS of the same resource pattern is configured on the even number period of the target adjacent cell, so that the CSI-IM on the even number period is ensured to be interfered certainly.

The resource pattern refers to a time domain symbol index occupied by the first CSI during transmission and subcarriers specifically occupied by 12 subcarriers on each RB.

For example, as shown in fig. 7, when the second CSI-RS information is configured to be periodic, the serving cell may configure the CSI-IM with a period of 5 slots and an offset value of 0; the period of CSI-IM sent by the target adjacent region is 10 slots, the period of the offset value is 0, the period of the CSI-RS is 10 slots, and the offset value is 5; the interference value under two scenes of no interference and interference can be measured when the CSI-IM of the service cell is used for interference measurement.

When the second CSI-RS information is configured to be semi-persistent, it is required to ensure that the activation time of the serving cell is the same as that of the target neighbor cell. For example, the pre-indication information may be sent to the UE and the target neighboring cell at the same time.

Optionally, the configuration information may be used to indicate a state that the frequency domain resources occupied by the UE completely conflict, do not conflict, or partially conflict with the target neighboring cell.

In a specific implementation, the serving cell may obtain a frequency domain resource usage condition of the current target neighboring cell according to the configuration information uploaded by the target neighboring cell, and the frequency domain resource of the UE is allocated by the serving cell. And comparing to obtain whether the frequency domain resource usage of the current target adjacent cell and the UE conflicts.

As shown in fig. 8, for example, if all the current target neighboring cells schedule the frequency domain resources allocated to the UE by the serving cell, it indicates that the frequency domain resources occupied by the UE completely conflict with the target neighboring cells, and the interference is strongest; if the frequency domain resources allocated to the UE by the serving cell are not scheduled by the current target neighboring cell, it is indicated that the frequency domain resources occupied by the UE do not conflict with the target neighboring cell at all and the interference is the weakest; and if the current target adjacent cell part schedules the frequency domain resources distributed to the UE by the serving cell, the frequency domain resources occupied by the UE conflict with the target adjacent cell part.

Optionally, when the second CSI-RS information is configured to be aperiodic, it is also required to ensure that the target neighboring cell can also send CSI-IM or CSI-RS at the same time when the serving cell sends CSI-IM, so that the UE of the serving cell can measure interference in both interference-free and interference-free scenarios, and ensure that the CSI-IM and the CSI-RS that the target neighboring cell needs to assist sending and the CSI-IM of the serving cell can overlap in a time-frequency domain.

Optionally, when the time-frequency domain characteristic of the second CSI-RS information is periodic, the sub-step 2042 may include the sub-steps of:

substep A1: according to the first CSI-IM information with the first period of n, determining second CSI-RS information with a second period of 2n and a second offset value of n, and second CSI-IM information with a second period of 2n and a second offset value of 0;

substep A2: and generating second CSI according to the second CSI-RS information and the second CSI-IM information.

In a specific implementation, the time-frequency domain characteristic of the second CSI-RS information may be configured to be periodic to ensure that CSI-IM information on odd cycles is not interfered, and CSI-IM information on even cycles is certainly maximally interfered.

Optionally, when the time-frequency domain characteristic of the second CSI-RS information is semi-persistent, the sub-step 2042 may include the sub-steps of:

substep B1: according to the first CSI-IM information with the first period of n, determining second CSI-RS information with a second period of 2n and a second offset value of n, and second CSI-IM information with a second period of 2n and a second offset value of 0;

substep B2: generating second CSI according to the second CSI-RS information and the second CSI-IM information;

the MAC CE may be configured to instruct the target neighboring cell to send second CSI and instruct the UE to measure the first CSI.

In a specific implementation, in order to ensure that the CSI-IM information on the odd cycles is not interfered, the interference on the CSI-IM information on the even cycles is the maximum. The time-frequency domain characteristic of the second CSI-RS information may also be configured to be semi-persistent, and at this time, a timing advance command MAC CE with a period of n needs to be added to the second CSI to instruct the serving cell to transmit the first CSI within the transmission duration of the MAC CE, and the target neighboring cell transmits the second CSI at the same time, and the UE measures the first CSI.

Optionally, when the time-frequency domain characteristic of the second CSI-RS information is aperiodic, the sub-step 2042 may further include the sub-steps of:

substep C1: the target neighbor cell generates second CSI which is sent simultaneously with the first CSI according to the first CSI;

and the second CSI-RS information and the second CSI-IM information are alternately transmitted.

In a specific implementation, since the time-frequency domain characteristic of the second CSI-RS information is aperiodic, it is ensured that the CQI of the CSI can be detected without interference or with interference. Therefore, according to the sending time of the first CSI, the second CSI sent simultaneously with the first CSI can be configured on the target neighboring cell.

Further, second CSI-RS information and second CSI-IM information can be sent alternately to ensure that the UE can detect CQI without interference and with interference.

Step 205, the UE determines a channel quality indication signal (CQI) according to the first CSI and the second CSI;

in a specific implementation, since the time-frequency domain characteristic of the second CSI may be configured to be periodic, semi-persistent, or aperiodic, when the target neighbor cell transmits the second CSI to the serving cell and the UE, the second CSI may also be transmitted in a periodic, semi-persistent, or aperiodic setting.

Optionally, after the serving cell receives the CQI measured by the UE in the non-interference and maximum interference states, the serving cell may instruct the target neighboring cell to stop the cooperative transmission of the second CSI through Xn or an inter-board communication mechanism, so as to reduce resource occupation of the target neighboring cell. Further, the transmission of the second CSI may be configured to be transmitted in a semi-static or aperiodic manner.

Optionally, step 205 may comprise the following sub-steps:

step 2051, the UE determines a first CQI of the UE under the condition of maximum interference according to an overlapping portion of the first CSI-IM information and the second CSI-RS information;

as shown in fig. 7, in this embodiment of the application, when receiving the first CSI-IM information and the second CSI-RS information that are sent in an overlapping manner, the UE determines that the UE is interfered at this time, and may measure interference energy through the UE to determine a first CQI of the UE in a maximum interference condition.

Optionally, the first CQI may be a CQI of the UE in a maximum interference situation.

The interference may be electromagnetic interference caused by overlapping of coverage areas between neighboring cells and the UE, which is not limited in this embodiment of the present application.

Step 2052, the UE determines a second CQI of the UE without interference according to an overlapping portion of the first CSI-IM information and the second CSI-IM information;

as shown in fig. 7, in this embodiment, when receiving the first CSI-IM information and the second CSI-IM information that are sent in an overlapping manner, the UE may measure signal energy through the UE to determine a second CQI of the UE without interference.

In a specific implementation, the UE may also be subjected to partial interference from an adjacent cell, and then an equivalent CQI may be calculated according to the first CQI and the second CQI in combination with the collision ratio, so as to more effectively determine a spectrum efficiency suitable for the current CQI according to an MCS corresponding to the equivalent CQI.

In this embodiment of the present application, after determining the CQI, the UE may report the CQI to the serving cell through a PUCCH or a PUSCH channel via air interface communication.

Air interface communication: the air interface, known collectively as the "air interface," is an visual term for the specification of the radio transmission between the base station and the mobile telephone. In mobile communications, a telephone end User (UE) and a base station (cell) are interconnected via an Air Interface (Air Interface).

Optionally, the CQI reported in the period of 2n may represent a first CQI when the interference is maximum, and the CQI reported in the period of 2n +1 may represent a second CQI when the interference is not.

Step 206, the serving cell determines a conflict ratio according to the target neighboring cell resource occupation information reported by the target neighboring cell and the resource occupation information of the UE;

in the embodiment of the present application, the serving cell may also determine a conflict ratio directly according to target neighboring cell resource occupation information reported by a target neighboring cell and resource occupation information of the UE;

the target neighboring cell also comprises target neighboring cell resource occupation information and reports the target neighboring cell resource occupation information to the serving cell, and the target neighboring cell resource occupation information is used for indicating the situation that the target neighboring cell occupies the serving cell resource.

Optionally, the serving cell further includes overall resource occupation information, and step 206 further includes the following sub-steps:

substep 2061, the serving cell determining the same part and different parts of the target neighboring cell resource occupation information and the resource occupation information of the UE according to the target neighboring cell resource occupation information reported by the target neighboring cell and the resource occupation information of the UE;

in this embodiment of the present application, the serving cell may compare occupied areas of target neighboring cell resource occupation information and resource occupation information of the UE, so as to determine resource occupation conditions of the target neighboring cell resource occupation information and the UE. When the target neighboring cell resource occupation area and the resource occupation area of the UE have the same overlapped part, recording the area as the same part; and when the target adjacent cell resource occupation area and the resource occupation area of the UE have the same overlapped part, marking the area as a different part.

A substep 2062 of calculating a ratio of the same part to the whole resource occupation information as a first ratio;

in this embodiment of the present application, a ratio of the same portion to the overall resource occupation information of the serving cell may be calculated, and this ratio is used as a first ratio. For example, if the overall resource occupation information of the serving cell is 10 and the same portion is 3, the calculated first ratio is 3/10.

A substep 2063 of calculating a ratio of the different parts to the overall resource occupation information as a second ratio;

in this embodiment, a ratio of the different parts to the overall resource occupation information of the serving cell may be calculated, and the ratio is used as the second ratio. For example, if the overall resource occupation information of the serving cell is 10 and the different part is 7, the calculated second ratio is 7/10.

Sub-step 2064 of determining the conflict ratio as a first ratio.

In this embodiment of the present application, the conflict ratio is a ratio of the occupied resources to the entire resources of the serving cell when the resources used by the target neighboring cell and the UE are the same. Therefore, the first ratio may be determined as the collision ratio.

Alternatively, the second ratio may be determined as a non-conflicting ratio, and is not limited herein.

Wherein the sum of the first ratio and the second ratio is 1.

Step 207, the serving cell calculates an equivalent CQI according to the CQI reported by the UE and the collision ratio, and determines a modulation and coding scheme MCS corresponding to the equivalent CQI;

in a particular implementation, the MCS has 0-27 levels, each level corresponding to a different spectral efficiency value; the CQI may be specifically divided into 0-15, each CQI also having a corresponding spectral efficiency. The CQI and the MCS levels can be associated to form a corresponding relation through the spectrum efficiency, and the MCS levels corresponding to different CQIs are determined according to the corresponding relation, so that a more reasonable MCS is selected, the spectrum efficiency is improved, and the throughput is improved.

Optionally, step 207 may further comprise the sub-steps of:

substep 2071, the serving cell calculating an equivalent CQI by adding the product of the first CQI and the first ratio and the product of the second CQI and the second ratio;

substep 2072, determining the modulation and coding scheme MCS corresponding to the equivalent CQI.

In the embodiment of the present application, the serving cell adds and calculates an equivalent CQI according to a product of the first CQI and the first ratio and a product of the second CQI and the second ratio;

for example, the frequency domain resource occupied by the UE completely conflicts with the target neighboring cell, and at this time, the target neighboring cell interference suffered by the UE is strongest. The first ratio at this time is the maximum value 1, the second ratio is the minimum value 0, and further, the product of the first CQI and the first ratio and the product of the second CQI and the second ratio are added to each other, whereby it can be determined that the equivalent CQI at this time is equal to the first CQI.

The process is similar to the above process, and the frequency domain resources occupied by the UE and the target neighboring cell do not conflict at all, and are not described herein again.

In a specific implementation, since the UE is in the maximum interference state at this time, the serving cell may further obtain a data service request of the UE, modify an MCS according to the specific data service request, and improve a physical transmission rate, thereby improving spectrum efficiency and throughput.

Optionally, if the frequency domain resource occupied by the UE is completely free from conflict with the target neighboring cell, the UE is not interfered by the target neighboring cell. The serving cell may determine that the UE is in the minimum interference state directly according to the second CQI, and further determine an MCS that the UE should adopt. The serving cell may obtain the data service request of the UE, and reduce the physical transmission rate according to the specific data service request, so as to avoid resource waste.

In this embodiment of the present application, if the frequency domain resource occupied by the UE partially conflicts with the target neighboring cell, the serving cell cannot directly adjust the physical transmission rate according to the first CQI or the second CQI. In this case, the serving cell may calculate an equivalent CQI by adding the product of the first CQI and the first ratio and the product of the second CQI and the second ratio to each other.

For example: the first ratio is 6/13, the second ratio is 7/13, the first CQI is 13, and the second CQI is 1, then the equivalent CQI is determined to be 13 × 6/13+1 × 7/13=85/13, and approximately equal to 7, so as to determine the MCS actually needed to be used, and further determine to increase the physical transmission rate.

Step 208, the serving cell schedules the physical transmission rate according to the MCS.

In a specific implementation, the physical transmission rate of the UE may be adjusted by the serving cell according to the MCS according to the modified MCS and the physical transmission rate corresponding to the MCS in the protocol, so as to improve the spectrum efficiency and improve the service throughput of the UE.

It should be noted that, for simplicity of description, the method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present invention is not limited by the illustrated order of acts, as some steps may occur in other orders or concurrently in accordance with the embodiments of the present invention. Further, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred and that no particular act is required to implement the invention.

Referring to fig. 3, a block diagram of a physical transmission rate adjustment system according to an embodiment of the present invention is shown, where the physical transmission rate adjustment system includes a serving cell, a plurality of neighboring cells, and a user equipment UE, where the serving cell includes:

a first CSI presetting module 301, configured to preset first CSI of the UE;

a target neighboring cell selecting module 302, configured to select a target neighboring cell from the multiple neighboring cells according to the reported information of the UE; wherein the serving cell includes resource occupancy information of the UE;

a conflict ratio calculation module 303, configured to determine a conflict ratio according to the target neighboring cell resource occupation information reported by the target neighboring cell and the resource occupation information of the UE;

an MCS determining module 304, configured to calculate an equivalent CQI according to the CQI reported by the UE and the collision proportion, and determine a modulation and coding scheme MCS corresponding to the equivalent CQI;

a physical transmission rate adjustment module 305, configured to adjust a physical transmission rate of the UE according to the MCS;

the neighborhood region comprises:

a second CSI generation module 306, configured to generate a second CSI according to the first CSI sent by the serving cell; and the target adjacent cell comprises target adjacent cell resource occupation information.

The UE comprises:

a CQI determining module 307, configured to determine a channel quality indication signal CQI according to the first CSI and the second CSI.

Optionally, the serving cell of the UE includes reference signal received powers, RSRPs, of the multiple neighboring cells, and the target neighboring cell selecting module 302 includes:

an RSRP value comparison module for comparing the RSRP values of the plurality of neighboring cells;

Optionally, the first CSI includes first channel state information reference signal CSI-RS information and first channel state information interference measurement CSI-IM information, and the second channel state information generating module 306 includes:

an aperiodic information generating unit configured to generate, according to the first CSI, second CSI transmitted simultaneously with the first CSI;

Optionally, the CQI generating module includes:

optionally, the serving cell in the system further includes:

Optionally, the serving cell further includes whole resource occupation information, and the collision ratio calculation module 303 includes:

a resource occupation distinguishing sub-module, configured to determine, according to target neighboring cell resource occupation information reported by the target neighboring cell and resource occupation information of the UE, a same part and a different part of the target neighboring cell resource occupation information and the resource occupation information of the UE;

Optionally, the MCS determining module 304 includes:

and the MCS determining submodule is used for determining the modulation and coding scheme MCS corresponding to the equivalent CQI.

For the system embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, refer to the partial description of the method embodiment.

The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

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

Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the invention. 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 program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing terminal to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal, create a system for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

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

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

While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.

Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrases "comprising one of 8230; \8230;" 8230; "does not exclude the presence of additional like elements in a process, method, article, or terminal device that comprises the element.

The method and system for adjusting physical transmission rate provided by the present invention are introduced in detail, and a specific example is applied in the text to explain the principle and the implementation of the present invention, and the description of the above embodiment is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims

1. A method for adjusting physical transmission rate is characterized in that a service cell, a plurality of adjacent cells and a User Equipment (UE) are connected with each other, the method comprises the following steps:

the serving cell presets first Channel State Information (CSI) of the UE;

the UE determines a channel quality indication signal (CQI) according to the first Channel State Information (CSI) and the second Channel State Information (CSI);

the serving cell calculates an equivalent CQI according to the CQI reported by the UE and the conflict proportion, and determines a modulation coding scheme MCS corresponding to the equivalent CQI;

the serving cell adjusts the physical transmission rate of the UE according to the Modulation Coding Scheme (MCS);

the first channel state information CSI comprises first channel state information reference signal CSI-RS information and first channel state information interference measurement CSI-IM information;

the target neighbor cell determines that a first period of the first CSI-IM information is n according to the first CSI-RS information and the first CSI-IM information;

generating second Channel State Information (CSI) according to the first CSI-IM information with the first period of n;

wherein the second channel state information CSI comprises second CSI-RS information and second CSI-IM information;

2. The method of claim 1, wherein a serving cell of the UE includes reference signal received powers, RSRPs, of the plurality of neighboring cells, and wherein the step of the serving cell selecting a target neighboring cell from the plurality of neighboring cells according to the reported information of the UE comprises:

comparing the RSRP values of the plurality of neighboring cells;

and selecting the neighbor cell with the maximum RSRP value as the target neighbor cell.

3. The method of claim 1, wherein when the time-frequency domain characteristic of the second CSI-RS information is periodic, the step of generating second channel state information CSI according to the first CSI-IM information with the first period of n comprises:

according to the first CSI-IM information with the first period of n, second CSI-RS information with the second period of 2n and the second offset value of n and second CSI-IM information with the second period of 2n and the second offset value of 0 are determined;

and generating second Channel State Information (CSI) according to the second CSI-RS information and the second CSI-IM information.

4. The method of claim 1, wherein when the time-frequency domain characteristic of the second CSI-RS information is semi-persistent, the step of generating the second channel state information CSI according to the first CSI-IM information with the first periodicity of n further comprises:

generating second Channel State Information (CSI) according to the second CSI-RS information and the second CSI-IM information;

the second channel state information CSI also comprises a timing advance command MAC CE with the period of n;

and the MAC CE is used for indicating the target adjacent cell to send second Channel State Information (CSI) and indicating the UE to measure the first CSI.

5. The method of claim 1, wherein when the time-frequency domain characteristics of the second CSI-RS information are aperiodic, the step of generating second channel state information CSI according to the first CSI-IM information with the first periodicity of n further comprises:

the target neighbor cell generates second Channel State Information (CSI) which is sent simultaneously with the first CSI according to the first CSI;

6. The method according to claim 1, wherein the step of the UE determining a channel quality indication signal, CQI, based on the first channel state information, CSI, and the second channel state information, CSI, comprises:

7. The method of claim 1, wherein after the step of the serving cell presetting the first Channel State Information (CSI) of the UE, the method further comprises:

the serving cell presets the reporting period of the CQI;

8. The method of claim 6, wherein the serving cell further includes whole resource occupation information, and the step of determining, by the serving cell, the collision ratio according to the target neighboring cell resource occupation information reported by the target neighboring cell and the resource occupation information of the UE includes:

calculating the ratio of the different parts to the whole resource occupation information as a second proportion;

determining the conflict ratio to be a first ratio.

9. The method of claim 8, wherein the serving cell calculates an equivalent CQI according to the CQI and the target neighboring cell resource occupancy information, and the step of determining the modulation and coding scheme MCS corresponding to the equivalent CQI comprises:

the serving cell adds and calculates an equivalent CQI according to a product of the first CQI and the first proportion and a product of the second CQI and the second proportion;

and determining a Modulation Coding Scheme (MCS) corresponding to the equivalent CQI.

10. A physical transmission rate adjustment system is characterized in that the system comprises a service cell, a plurality of adjacent cells and a User Equipment (UE) which are connected with each other, and the service cell comprises:

a target neighboring cell selection module, configured to select a target neighboring cell from the multiple neighboring cells according to the report information of the UE; wherein the serving cell includes resource occupancy information of the UE;

a Modulation Coding Scheme (MCS) determining module, configured to calculate an equivalent CQI according to the CQI reported by the UE and the conflict ratio, and determine a MCS corresponding to the equivalent CQI;

a physical transmission rate adjusting module, configured to adjust a physical transmission rate of the UE according to the modulation and coding scheme MCS;

the adjacent cell comprises:

a second CSI generation module, configured to generate a second CSI according to the first CSI sent by the serving cell; the target neighbor cell comprises target neighbor cell resource occupation information;

the UE includes:

a CQI determination module, configured to determine a Channel Quality Indicator (CQI) according to the first CSI and the second CSI;

wherein the first CSI comprises first CSI-RS information and first CSI-IM information, and the second CSI generation module comprises:

a first cycle determining module, configured to determine, according to the first CSI-RS information and the first CSI-IM information, that a first cycle of the first CSI-IM information is n;

the information generation submodule is used for generating second Channel State Information (CSI) according to the first CSI-IM information with the first period of n;

11. The system of claim 10, wherein the serving cell of the UE includes reference signal received powers, RSRPs, of the plurality of neighbors, and wherein the target neighbor selection module comprises:

12. The system of claim 10, wherein the first Channel State Information (CSI) comprises first CSI-RS information and first CSI-IM information, and wherein the second CSI generation module comprises:

the information generation submodule is used for generating second Channel State Information (CSI) according to the first CSI-IM information with the first period n;

the time-frequency domain characteristic of the second CSI-RS information is periodic, semi-persistent, or aperiodic.

13. The system of claim 12, wherein when the time-frequency domain characteristic of the second CSI-RS information is periodic, the information generation sub-module comprises:

and the period information generating unit is used for generating second Channel State Information (CSI) according to the second CSI-RS information and the second CSI-IM information.

14. The system of claim 12, wherein when the time-frequency domain characteristic of the second CSI-RS information is semi-persistent, the information generation sub-module further comprises:

a semi-persistent information generating unit, configured to generate second channel state information CSI according to the second CSI-RS information and the second CSI-IM information;

15. The system of claim 12, wherein when the time-frequency domain characteristic of the second CSI-RS information is aperiodic, the information generation sub-module further comprises:

an aperiodic information generating unit, configured to generate, according to the first channel state information CSI, a second channel state information CSI that is sent simultaneously with the first channel state information CSI;

16. The system of claim 12, wherein the CQI generation module comprises:

and the second CQI determining submodule is used for determining a second CQI of the UE under the condition of no interference according to the overlapping part of the first CSI-IM information and the second CSI-IM information.

17. The system of claim 12, wherein the serving cell in the system further comprises:

18. The system of claim 16, wherein the serving cell further comprises overall resource occupancy information, and wherein the collision ratio calculation module comprises:

19. The system according to claim 18, wherein the Modulation and Coding Scheme (MCS) determining module comprises:

an equivalent CQI calculation sub-module, configured to add and calculate an equivalent CQI according to a product of the first CQI and the first proportion and a product of the second CQI and the second proportion;

and the modulation coding scheme MCS determining submodule is used for determining the modulation coding scheme MCS corresponding to the equivalent CQI.