CN116599622A

CN116599622A - Communication control method, device, computer storage medium and electronic equipment

Info

Publication number: CN116599622A
Application number: CN202310685438.7A
Authority: CN
Inventors: 张志荣; 刘桂清; 李鹏; 谢伟良; 王庆扬
Original assignee: Beijing Research Institute Of China Telecom Corp ltd; China Telecom Corp Ltd
Current assignee: Beijing Research Institute Of China Telecom Corp ltd; China Telecom Corp Ltd
Priority date: 2023-06-09
Filing date: 2023-06-09
Publication date: 2023-08-15

Abstract

The application belongs to the technical field of 5G and 5G+ mobile communication, and relates to a communication control method, a device, a storage medium and electronic equipment. The method is applied to the DSS base station and comprises the following steps: acquiring neighbor LTE CRS port information, and constructing a new air interface NR downlink resource distribution diagram based on the neighbor LTE CRS port information; determining a zero-power channel state reference signal ZP CSI-RS detection window according to the neighbor LTE CRS port information and the NR downlink resource distribution map, sending the ZP CSI-RS detection window to an NR terminal, and triggering the NR terminal to perform neighbor LTE CRS interference detection according to a ZP CSI-RS signal corresponding to the ZP CSI-RS detection window; and receiving an LTE CRS interference detection result sent by the NR terminal, determining a target rate matching RM mode according to the LTE CRS interference detection result, and eliminating neighboring LTE CRS interference signals according to the target RM mode. The application can adaptively switch the RE-level RM mode and the symbol-level RM mode, thereby eliminating LTE CRS interference and improving NR downlink efficiency.

Description

Communication control method, device, computer storage medium and electronic equipment

Technical Field

The present application relates to the field of communication control technologies, and in particular, to a communication control method, a communication control device, a computer readable storage medium, and an electronic apparatus.

Background

The dynamic spectrum sharing technology (Dynamic spectrum sharing, DSS) can enable networks of different standards to share the same frequency band, and can dynamically allocate bandwidth to different network standards according to requirements, so that spectrum resources are fully utilized, for example, long term evolution (Long Term Evolution, LTE) based on a 4G network and New Radio (NR) based on a 5G network can realize spectrum sharing through the DSS technology.

However, in DSS outfield test of a certain carrier frequency, it is found that a certain interference is caused to signal transmission of a physical downlink shared channel PDSCH of a 5G NR terminal by a neighbor Cell long term evolution Cell specific reference signal LTE CRS (Cell-specific RS), and the interference magnitude is changed along with the change of the position of the NR terminal and the shielding and scattering of the neighbor Cell LTE CRS signal, so that resource elements RE of the PDSCH cannot be fully utilized due to the existence of LTE CRS interference, and DSS or NR network performance and NR terminal user experience are seriously affected.

It should be noted that the information disclosed in the foregoing background section is only for enhancement of understanding of the background of the application.

Disclosure of Invention

The application aims to provide a communication control method, a communication control device, a computer readable storage medium and electronic equipment, so that influence of LTE CRS interference on NR downlink performance is avoided at least to a certain extent, and experience of NR terminal users is improved.

Other features and advantages of the application will be apparent from the following detailed description, or may be learned by the practice of the application.

According to a first aspect of the present application, there is provided a communication control method applied to a dynamic spectrum sharing DSS base station, comprising: acquiring neighbor Long Term Evolution (LTE) cell specific reference signal (CRS) port information, and constructing a new air interface (NR) downlink resource distribution diagram based on the neighbor LTE CRS port information; determining a zero-power channel state reference signal ZP CSI-RS detection window according to the neighbor LTE CRS port information and the NR downlink resource distribution map, sending the ZP CSI-RS detection window to an NR terminal, and triggering the NR terminal to perform neighbor LTE CRS interference detection according to a ZP CSI-RS signal corresponding to the ZP CSI-RS detection window; and receiving an LTE CRS interference detection result sent by the NR terminal, determining a target rate matching RM mode according to the LTE CRS interference detection result, and eliminating neighboring LTE CRS interference signals according to the target RM mode.

According to a second aspect of the present application, there is provided a communication control apparatus configured in a DSS base station, comprising: the interference signal diagram construction module is used for acquiring the LTE CRS port information of the neighbor long-term evolution cell and constructing a new air interface NR downlink resource distribution diagram based on the LTE CRS port information of the neighbor; the detection window determining module is used for determining a zero-power channel state reference signal ZP CSI-RS detection window according to the neighbor LTE CRS port information and the NR downlink resource distribution diagram, sending the ZP CSI-RS detection window to an NR terminal, and triggering the NR terminal to perform neighbor LTE CRS interference detection according to a ZP CSI-RS signal corresponding to the ZP CSI-RS detection window; and the interference elimination module is used for receiving an LTE CRS interference detection result sent by the NR terminal, determining a target Rate Matching (RM) mode according to the LTE CRS interference detection result, and eliminating the LTE CRS interference signal of the adjacent cell according to the target RM mode.

According to a third aspect of the present application, there is provided a computer storage medium having stored thereon a computer program, characterized in that the computer program, when executed by a processor, implements the above-described communication control method.

According to a fourth aspect of the present application, there is provided an electronic device comprising: a processor; and a memory for storing executable instructions of the processor; wherein the processor is configured to perform the communication control method described above via execution of the executable instructions.

As can be seen from the above technical solutions, the communication control method, the communication control device, the computer-readable storage medium, and the electronic device according to the exemplary embodiments of the present application have at least the following advantages and positive effects:

in the communication control method in the embodiment of the application, a DSS base station acquires neighbor LTE CRS port information and constructs an NR downlink resource distribution diagram based on the neighbor LTE CRS port information; then, a zero-power channel state reference signal ZP CSI-RS detection window is determined according to LTE CRS port information and an NR downlink resource distribution diagram, the ZP CSI-RS detection window is sent to an NR terminal, and the NR terminal is triggered to perform LTE CRS interference detection according to a ZP CSI-RS signal corresponding to the ZP CSI-RS detection window; and finally, receiving an LTE CRS interference detection result sent by the NR terminal, determining a target rate matching RM mode according to the LTE CRS interference detection result, and eliminating the LTE CRS interference signal of the neighboring cell according to the target RM mode. The communication control method provided by the application can eliminate LTE CRS interference signals, ensures full utilization of RE resources of NR PDSCH, further improves NR downlink rate, improves user experience, improves DSS network performance and resource utilization rate, and reduces DSS equipment construction, operation and cost.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application as claimed.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application. It is evident that the drawings in the following description are only some embodiments of the present application and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.

Fig. 1 schematically shows a system architecture diagram to which a communication control method is applied in an embodiment of the present application.

Fig. 2 schematically shows a flow chart of a communication control method in an embodiment of the application.

Fig. 3 schematically shows an interface diagram of an initial NR downlink resource profile in an embodiment of the present application.

Fig. 4 schematically illustrates an NR downlink resource distribution diagram including LTE CRS interference signals when LTE CRS port information is two ports in an embodiment of the present application.

Fig. 5 schematically illustrates an NR downlink resource distribution diagram including LTE CRS interference signals when LTE CRS port information is four ports in an embodiment of the present application.

Fig. 6 schematically illustrates an interface diagram of a ZP CSI-RS detection window determined based on the NR downlink resource profiles illustrated in fig. 4 in an embodiment of the present application.

Fig. 7 schematically illustrates an interface diagram of a ZP CSI-RS detection window determined based on the NR downlink resource profiles illustrated in fig. 5 in an embodiment of the present application.

Fig. 8A-8C schematically illustrate interface diagrams for interference cancellation according to a target RM mode in an embodiment of the present application.

Fig. 9A-9C schematically illustrate interface diagrams for interference cancellation according to a target RM mode in an embodiment of the application.

Fig. 10 schematically shows an interactive flow diagram of a communication control method in an embodiment of the application.

Fig. 11 schematically shows a schematic structural diagram of a communication control apparatus in an embodiment of the present application.

Fig. 12 schematically shows a block diagram of a computer system suitable for use in implementing embodiments of the application.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments may be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art.

Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the application. One skilled in the relevant art will recognize, however, that the application may be practiced without one or more of the specific details, or with other methods, components, devices, steps, etc. In other instances, well-known methods, devices, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the application.

The terms "a," "an," "the," and "said" are used in this specification to denote the presence of one or more elements/components/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. in addition to the listed elements/components/etc.; the terms "first" and "second" and the like are used merely as labels, and are not intended to limit the number of their objects.

The block diagrams depicted in the figures are merely functional entities and do not necessarily correspond to physically separate entities. That is, the functional entities may be implemented in software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor devices and/or microcontroller devices.

The flow diagrams depicted in the figures are exemplary only, and do not necessarily include all of the elements and operations/steps, nor must they be performed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially combined, so that the order of actual execution may be changed according to actual situations.

In the related technology in the field, when 4G LTE and 5G NR carry out dynamic spectrum sharing, downlink signals of an NR terminal are interfered by LTE CRS, the interference magnitude can be changed along with the change of the position of the NR terminal and the shielding and scattering of LTE CRS interference signals, and for different degrees of interference, different rate matching modes are needed, for example, when the NR terminal is at a middle-far point and a far point relative to a DSS base station, the interference of LTE CRS of a neighboring cell is stronger, if the interference is removed by adopting an RE-level RM mode, the efficiency is low, the accuracy is poor, and the downlink rate of the NR terminal is suddenly reduced; when the NR terminal is in a middle near point and a near point relative to the DSS base station, interference by the LTE CRS of the adjacent cell is weak, if the interference is removed by adopting a symbol-level RM mode, the whole symbol resource of the LTE CRS corresponding to the NR PDSCH cannot be used, and thus RE resources are seriously wasted.

Although a suitable rate matching manner can be selected according to the distance, for the case that the LTE CRS interference signal is blocked and scattered, even if the NR terminal is far away from the DSS base station, the interference of the LTE CRS received by the NR terminal is weak, and if the symbol-level RM manner is adopted for interference removal, serious waste of RE resources is caused.

Aiming at the technical problems in the related art, the embodiment of the application provides a communication control method, which combines LTE CRS interference elimination and full utilization of NR PDSCH resources by adaptively switching an RE-level RM mode and a symbol-level RM mode, improves NR downlink rate, improves DSS network performance and resource utilization rate, reduces DSS equipment construction, operation and cost, and improves user experience. Before describing the technical solution in the embodiments of the present application in detail, technical terms that may be related to the embodiments of the present application will be explained and described first.

(1) LTE: long Term Evolution, long term evolution, is a long term evolution of The UMTS (Universal Mobile Telecommunications System ) technical standard established by The 3GPP (The 3rd Generation Partnership Project, third generation partnership project) organization.

(2) NR: new Radio, new Radio/New air interface, namely 5G wireless network, 5G NR is a global 5G standard based on completely New air interface design of OFDM (Orthogonal FreqNR terminal ncy Division Multiplexing, orthogonal frequency division multiplexing), and is also a very important cellular mobile technology foundation of the next generation.

(3) DSS: dynamic spectrum sharing, the dynamic spectrum sharing technology can enable networks of different systems to share the same frequency band, and dynamically allocate bandwidth to different network systems according to requirements, so that spectrum resources are fully utilized.

(4) CRS: cell-specific Reference Signal, a Cell-specific reference signal, also called a common reference signal) is a channel estimation and associated demodulation for all downlink transmission techniques except for beamforming techniques that are not codebook-based.

(5) PCI: physical Cell Identifier, i.e. the physical cell identity, by which the terminal in LTE distinguishes radio signals of different cells.

(6) CSI-RS: the channel state information reference signal is used for beamforming and can be configured for a specific beam or a terminal NR terminal, the resource element RE carrying the CSI-RS can be configured as zero-power ZP CSI-RS or non-zero-power NZP CSI-RS, and the terminal NR terminal reports the downlink channel state to the network through monitoring of the CSI-RS in the 5G network.

(7) RE: resource Element, LTE minimum radio Resource unit, also is the minimum unit that bears user information, occupy 1 OFDM symbol in the time domain, is 1 subcarrier in the frequency domain.

(8) RB: resource Block, resource allocation frequency domain minimum unit of physical layer data transmission, the frequency domain is 12 continuous subcarriers, and according to different CP length, the number of OFDM symbols contained in each RB of LTE is different.

(9) PDCCH: physical Downlink Control Channel the physical downlink control channel is used for carrying scheduling and other control information, and specifically includes a transport format, resource allocation, uplink scheduling grant, power control, uplink retransmission information, and the like.

(10) PDSCH: physical Downlink Shared Channel, physical downlink shared channel, for carrying data from the transport channel DSCH.

(11) DMRS: demodulation Reference Signal demodulation reference signals are used in LTE for correlated demodulation of PUSCH and PUCCH channels.

(12) Rate matching: rate mapping, which refers to the bits on a transport channel being retransmitted (repeated) or punctured (punctured) to match the physical channel's bearer capability, achieves the bit Rate required by the transport format when the channel is mapped.

After describing the technical terms possibly related to the embodiments of the present application, the communication control method in the present application will be described in detail.

Fig. 1 schematically shows a block diagram of a system architecture of a communication control system to which the technical solution of the present application is applied.

As shown in fig. 1, the system architecture may include a DSS base station 101, an NR terminal 102, an LTE terminal 103, and a network, where the DSS base station 101 is configured to dynamically allocate spectrum resources for a 4G LTE network and a 5GNR network in the same frequency band, so as to meet traffic demands of the NR terminal 102 and the LTE terminal 103, and ensure optimal performance of the NR terminal 102 and the LTE terminal 103; NR terminal 102 is configured to request 5G network resources from DSS base station 101; the LTE terminal 103 is configured to request 4G network resources from the DSS base station 101; the network is a communication network for providing data transmission links between DSS base station 101 and NR terminal 102, DSS base station 101 and LTE terminal 103.

The technical scheme provided by the embodiment of the application can be applied to a DSS base station and can be applied to an NR terminal.

The communication control method can be applied to any scene involving dynamic spectrum sharing of 4GLTE and 5G NR based on DSS technology. The communication control method provided by the application is described in detail below with reference to the specific embodiments.

Fig. 2 shows a flow chart of a communication control method applied to a DSS base station, which may be the DSS base station 101 in fig. 1, as shown in fig. 2, the communication control method comprising:

step S210: acquiring neighbor Long Term Evolution (LTE) cell specific reference signal (CRS) port information, and constructing a new air interface (NR) downlink resource distribution diagram based on the neighbor LTE CRS port information;

step S220: determining a zero-power channel state reference signal ZP CSI-RS detection window according to the neighbor LTE CRS port information and the NR downlink resource distribution map, sending the ZP CSI-RS detection window to an NR terminal, and triggering the NR terminal to perform neighbor LTE CRS interference detection according to a ZP CSI-RS signal corresponding to the ZP CSI-RS detection window;

step S230: and receiving an LTE CRS interference detection result sent by the NR terminal, determining a target rate matching RM mode according to the LTE CRS interference detection result, and eliminating neighboring LTE CRS interference signals according to the target RM mode.

According to the communication control method, a DSS base station acquires neighbor LTE CRS port information, and an NR downlink resource distribution diagram is constructed based on the neighbor LTE CRS port information; then, a zero-power channel state reference signal ZP CSI-RS detection window is determined according to LTE CRS port information and an NR downlink resource distribution diagram, the ZP CSI-RS detection window is sent to an NR terminal, and the NR terminal is triggered to perform LTE CRS interference detection according to a ZP CSI-RS signal corresponding to the ZP CSI-RS detection window; and finally, receiving an LTE CRS interference detection result sent by the NR terminal, determining a target rate matching RM mode according to the LTE CRS interference detection result, and eliminating the LTE CRS interference signal of the neighboring cell according to the target RM mode. The communication control method provided by the application can eliminate LTE CRS interference signals, ensures full utilization of RE resources of NR PDSCH, further improves NR downlink rate, improves user experience, improves DSS network performance and resource utilization rate, and reduces DSS equipment construction, operation and cost.

Next, each step of the communication control method shown in fig. 2 will be described in detail.

In step S210, neighbor long term evolution cell specific reference signal LTE CRS port information is obtained, and a new air interface NR downlink resource distribution diagram is constructed based on the neighbor LTE CRS port information.

In the exemplary embodiment of the present application, in terms of pilot signals, NR has no pilot signal that is fixed in time-frequency location and is always transmitted, in contrast to the downlink Cell common pilot of LTE, that is, cell-specific reference signal CRS (Cell-specific RS), which is required to be always transmitted in the entire system bandwidth, so for LTE, a base station must transmit downlink CRS, which increases not only pilot overhead but also raises the interference level to neighboring cells. For the scenario of dynamic spectrum sharing of an LTE cell and an NR cell by a DSS technology, when an LTE CRS interference signal exists, the LTE CRS interference signal collides with an NR PDSCH channel in time domain and frequency domain, so that for the NR cell, an adjacent cell LTE CRS can interfere with the NR terminal PDSCH channel to influence the downlink rate of NR.

In the exemplary embodiment of the present application, since the distribution of the cell reference signal CRS is related to the number of antenna ports, and correspondingly, the distribution of the LTE CRS is also related to the number of antenna ports corresponding to the LTE cell, in order to accurately eliminate LTE CRS interference in the NR cell, improve the NR downlink rate, obtain the neighbor LTE CRS port information, and construct an NR downlink resource distribution diagram based on the neighbor LTE CRS port information, and further perform LTE CRS interference detection according to the NR downlink resource distribution diagram, and determine a target rate matching manner according to the interference detection result to perform interference elimination.

In the exemplary embodiment of the present application, when constructing the NR downlink resource profile, the construction may be performed based on an initial NR downlink resource profile, where the initial NR downlink resource profile is an NR downlink resource profile that does not consider LTE CRS interference. Fig. 3 schematically illustrates an interfacial diagram of an initial NR downlink resource distribution diagram, where, as shown in fig. 3, the initial NR downlink resource distribution diagram includes information in two dimensions of a time domain and a frequency domain, the time domain includes 14 OFDM symbols, the frequency domain includes 12 subcarriers, where, sequence numbers of the OFDM symbols and the subcarriers are marked from 0, the initial NR downlink resource distribution diagram includes 168 resource element REs, channels or signals configured on resource element REs corresponding to different OFDM symbols are not identical, specifically, OFDM symbols 0 and 1 configure an LTE PDCCH channel, OFDM symbol 2 configure an NR PDCCH channel, OFDM symbols 3 and 12 configure an NR DMRS signal, OFDM symbol 13 configure an NR NZP CSI-RS signal, and REs corresponding to other OFDM symbols configure an NR PDSCH channel.

When being interfered by the LTE CRS of the adjacent cell, the NR downlink resource distribution diagram is constructed in different modes according to different LTE CRS port information. When the neighbor LTE CRS port information is two ports and LTE CRS interference signals exist, configuring the LTE CRS interference signals in a first target RE corresponding to a first OFDM symbol, a second OFDM symbol and a third OFDM symbol in an initial NR downlink resource distribution diagram so as to acquire the NR downlink resource distribution diagram; when the neighbor LTE CRS port information is four ports and LTE CRS interference signals exist, configuring the LTE CRS interference signals in a second target RE corresponding to a first OFDM symbol, a second OFDM symbol, a third OFDM symbol and a fourth OFDM symbol in the initial NR downlink resource distribution diagram so as to acquire the NR downlink resource distribution diagram; wherein the first OFDM symbol, the second OFDM symbol, the third OFDM symbol and the fourth OFDM symbol are the same as the partial OFDM symbol corresponding to the NR PDSCH channel, and the second OFDM symbol and the fourth OFDM symbol are adjacent in time domain; the positions of the first target RE and the second target RE are determined according to the remainder of the adjacent cell physical cell identification PCI corresponding to the LTE CRS interference signal after the 3 modulo operation.

Specifically, the first OFDM symbol may be 4, the second OFDM symbol may be 7, the third OFDM symbol may be 11, and the fourth OFDM symbol may be 8.

When the first target RE is determined, when the remainder is m, REs of the (m+1+3n) th subcarrier corresponding to the first, second, and third OFDM symbols may be taken as the first target RE, where m=0, 1, 2, and n is a non-negative integer. When the second target RE is determined, when the remainder is m, RE of the (m+1+3n) th subcarrier corresponding to the first OFDM symbol, the second OFDM symbol, the third OFDM symbol and the fourth OFDM symbol is taken as the second target RE, wherein m=0, 1, 2, n is a non-negative integer.

Fig. 4 schematically illustrates an NR downlink resource profile containing an LTE CRS interference signal when LTE CRS port information is two ports, as shown in fig. 4, when m=0, the LTE CRS interference signal is configured in REs corresponding to OFDM symbols 4, 7, and 11 of the 1 st subcarrier, 4 th subcarrier, 7 th subcarrier, and 10 th subcarrier, when m=1, the LTE CRS interference signal is configured in REs corresponding to OFDM symbols 4, 7, and 11 of the 2 nd subcarrier, 5 th subcarrier, 8 th subcarrier, and 11 th subcarrier, and when m=2, the LTE CRS interference signal is configured in REs corresponding to OFDM symbols 4, 7, and 11 of the 3 rd subcarrier, 6 th subcarrier, 9 th subcarrier, and 12 th subcarrier.

Fig. 5 schematically illustrates an NR downlink resource profile containing an LTE CRS interference signal when LTE CRS port information is four ports, as shown in fig. 5, when m=0, the LTE CRS interference signal is configured in REs of OFDM symbols 4, 7, 8, and 11 corresponding to the 1 st subcarrier, 4 th subcarrier, 7 th subcarrier, and 10 th subcarrier, when m=1, the LTE CRS interference signal is configured in REs of OFDM symbols 4, 7, 8, and 11 corresponding to the 2 nd subcarrier, 5 th subcarrier, 8 th subcarrier, and 11 th subcarrier, and when m=2, the LTE CRS interference signal is configured in REs of OFDM symbols 4, 7, 8, and 11 corresponding to the 3 rd subcarrier, 6 th subcarrier, 9 th subcarrier, and 12 th subcarrier.

It should be noted that, in the embodiment of the present application, only whether LTE CRS interference signals exist in REs is considered, the strength of LTE CRS interference signals is not considered, and LTE CRS interference signals are uniformly distributed, for example, when LTE CRS interference signals exist in REs corresponding to OFDM symbol 4 in the first subcarrier, LTE CRS interference signals necessarily also exist in REs corresponding to OFDM symbols 7, (8) and 11 in the first subcarrier, and LTE CRS interference signals also exist in REs corresponding to OFDM symbols 4, 7, (8) and 11 in the 4 th, 7 th and 10 th subcarriers.

In step S220, a ZP CSI-RS detection window of a zero power channel state reference signal is determined according to the neighbor LTE CRS port information and the NR downlink resource distribution diagram, the ZP CSI-RS detection window is sent to an NR terminal, and the NR terminal is triggered to perform neighbor LTE CRS interference detection according to the ZP CSI-RS signal corresponding to the ZP CSI-RS detection window.

In an exemplary embodiment of the present application, after determining the NR downlink resource distribution diagram, a ZP CSI-RS detection window may be determined in the NR downlink resource distribution diagram according to LTE CRS port information, and the NR terminal may detect whether there is neighboring LTE CRS interference according to a ZP CSI-RS signal corresponding to the ZP CSI-RS detection window.

In the exemplary embodiment of the application, the construction rule of the ZP CSI-RS detection window is different according to different LTE CRS port information, when the LTE CRS port information is two ports, any one RE in the first target RE is taken as a reference RE, the position of the reference RE is taken as a starting position, and the ZP CSI RS detection window is set in a specification of 1 RE in width and 3 RE in height; when the LTE CRS port information is four ports, any two time domain adjacent REs in the second target RE are used as reference REs, the position of the reference RE is used as a starting position, and a ZP CSI RS detection window is set according to the specification of 2 REs in width and 3 REs in height. It is noted that, when the ZP CSI-RS detection window is determined based on the reference RE, 3 REs may be determined from the reference RE in the forward direction of the frequency domain (vertical axis), or 3 REs may be determined from the reference RE in the reverse direction of the frequency domain (vertical axis), which is not particularly limited in the embodiment of the present application.

Fig. 6 schematically illustrates an interface schematic diagram of a ZP CSI-RS detection window determined based on the NR downlink resource distribution diagram illustrated in fig. 4, where, as illustrated in fig. 6, REs corresponding to OFDM symbols 7 and 7 in the 5 th subcarrier are used as reference REs, and 3 REs are determined along a positive direction of a frequency domain based on the reference REs, so that the ZP CSI-RS detection window when LTE CRS port information is two ports can be determined, as illustrated by a black frame in the figure.

Fig. 7 schematically illustrates an interface schematic diagram of a ZP CSI-RS detection window determined based on the NR downlink resource distribution diagram illustrated in fig. 5, where, as illustrated in fig. 7, REs corresponding to OFDM symbols 7, 8 and 8 in the 5 th subcarrier are used as reference REs, and 3 REs are determined based on the reference REs along the opposite direction of the frequency domain, so that the ZP CSI-RS detection window when LTE CRS port information is four ports can be determined, as illustrated by a black frame in the figure.

It should be noted that, for an NR terminal, it is generally interfered by CRSs of multiple LTE neighboring cells, so that the LTE CRS interference signal configured in the NR downlink resource distribution diagram in the embodiment of the present application is a CRS interference signal from multiple LTE cells, if the remainders of PCI modulo 3 of different LTE cells are the same, the LTE CRS interference signal is reflected at the REs in the same position in the NR downlink resource distribution diagram, and if the remainders of PCI modulo 3 of different LTE cells are different, the LTE CRS interference signal is reflected at the REs in different positions in the NR downlink resource distribution diagram, and in addition, in the embodiment of the present application, the strength of the LTE CRS interference signal configured in the REs is set to be the same and not different.

In the exemplary embodiment of the present application, the height of the ZP CSI-RS detection window is not limited to 3 REs, and the ZP CSI-RS detection window may be determined according to a plurality of neighbor LTE CRS pattern information. Specifically, when neighbor LTE CRS port information is acquired, neighbor LTE CRS pattern information may also be acquired, where the neighbor LTE CRS pattern information includes LTE CRS pattern information corresponding to a plurality of LTE cells, and meanwhile, the neighbor LTE CRS pattern information is a remainder of PCI modulo 3 corresponding to each LTE cell; and then determining a detection window generation rule according to the neighbor LTE CRS mode information, and determining a ZP CSI-RS detection window based on the detection window generation rule after constructing and forming an NR downlink resource distribution diagram.

Further, when determining the detection window generation rule according to the neighbor LTE CRS pattern information, the detection window generation rule may be determined together according to the neighbor LTE CRS port information and the neighbor LTE CRS pattern information, specifically, (1) when the plurality of neighbor LTE CRS port information are both two ports and the neighbor LTE CRS pattern information are the same, the detection window generation rule may be set as: taking any RE in the first target RE as a reference RE, taking the reference RE as a starting RE, and generating a ZP CSI-RS detection window with a specification of 1 RE in width and 1 RE in height, namely, in the case, the size of the detection window is 1 multiplied by 1, and only 1 RE exists; (2) When the plurality of neighbor LTE CRS port information are two ports and the neighbor LTE CRS mode information is different, the detection window generation rule may be set to: taking any RE in the first target RE as a reference RE, taking the reference RE as a starting RE, and generating a ZP CSI-RS detection window with a specification of 1 RE in width and 3 RE in height, namely, the detection window comprises 3 REs; (3) When the port information of the plurality of neighboring LTE CRS is four ports and the CRS pattern information of the neighboring LTE CRS is the same, the detection window generation rule may be set to: taking two adjacent time domains in a second target RE as reference RE, taking the reference RE as initial RE, and generating a ZP CSI-RS detection window with the specification of 2 RE wide and 1 RE high, namely, in the case, the size of the detection window is 2 multiplied by 1, and only 2 RE are needed; (4) When the plurality of neighbor LTE CRS port information are all four ports and the neighbor LTE CRS pattern information is not identical or is completely different, the detection window generation rule may be set to: and taking two adjacent time domains in the second target RE as reference RE, taking the reference RE as initial RE, and generating a ZP CSI-RS detection window with the specification of 2 RE wide and 3 RE high, namely, the size of the detection window is 2 multiplied by 3, and the detection window comprises 6 RE.

By determining the detection window generation rule according to the LTE CRS mode information and determining the ZP CSI-RS detection window based on the detection window generation rule, accurate interference detection can be realized, resource waste is reduced, and detection efficiency is improved.

In an exemplary embodiment of the present application, after determining the ZP CSI-RS detection window, information of the ZP CSI-RS detection window may be sent to the NR terminal, and the NR terminal may perform neighbor LTE CRS interference detection according to the ZP CSI-RS detection window. The adjacent cell LTE CRS interference detection can be realized through event triggering and periodic triggering, wherein the periodic triggering is that a DSS base station periodically triggers an NR terminal to perform interference detection, for example, after a preset time interval, a downlink instruction triggers the NR terminal to start a ZP CSI-RS signal corresponding to a ZP CSI-RS detection window to perform LTE CRE interference detection; the event triggering is realized by the DSS base station according to specific event triggering, for example, when the DSS base station detects that the distance between the NR terminal and the DSS base station is at a middle-far point or a far point, when the DSS base station detects that the downlink rate of the NR terminal is reduced, and the like, an interference detection instruction can be issued to the NR terminal to trigger the NR terminal to start a ZP CSI-RS signal corresponding to the ZP CSI-RS detection window to carry out LTE CRS interference detection. After the NR terminal completes LTE CRS interference detection, an LTE CRS detection result can be sent to the DSS base station, so that the DSS base station determines a target rate matching RM mode according to the LTE CRS detection result to perform interference elimination. The LTE CRS detection result includes how many REs in the ZP CSI-RS detection window have LTE CRS interference signals. It is noted that, because the ZP CSI-RS detection windows are different corresponding to different LTE CRS port information, before performing interference detection, the NR terminal needs to determine the number of antenna ports of the neighboring LTE, and then performs interference detection according to the corresponding ZP CSI-RS detection window.

In step S230, an LTE CRS interference detection result sent by the NR terminal is received, a target rate matching RM mode is determined according to the LTE CRS interference detection result, and neighboring LTE CRS interference signals are eliminated according to the target RM mode.

In an exemplary embodiment of the present application, after receiving an LTE CRS interference detection result sent by an NR terminal, a target RM mode may be determined according to the LTE CRS interference detection result. In the embodiment of the application, a target RM mode can be determined according to whether an LTE CRS interference signal exists in a ZP CSI-RM detection window, specifically, when the LTE CRS interference detection result is that the RE in the ZP CSI-RS signal detection window has LTE CRS interference, the RB symbol level RM mode is used as the target RM mode; when the LTE CRS interference detection result is that all REs in the ZP CSI-RS signal detection window have no LTE CRS interference, closing an RB symbol level RM mode, and no rate matching is needed.

Although the RB symbol level RM mode can quickly remove CRS interference, the RB symbol level RM mode performs rate matching on REs in 12 subcarriers at the same time, and when LTE CRS interference does not exist in some REs, performing interference cancellation by using the RB symbol level RM mode results in resource waste, so that available resources of the NR PDSCH are reduced, and the NR downlink rate is also affected. In view of this, the NR downlink rate may be improved by improving the interference cancellation accuracy, and in the embodiment of the present application, the target RM mode may be determined according to the LTE CRS interference level, and interference cancellation may be performed by the target RM mode.

The LTE CRS interference level may be determined according to the number of REs having interference in the ZP CSI-RM detection window and the total number of REs included in the ZP CSI-RS detection window, which indicates that the interference level is heavy when all REs in the ZP CSI-RS detection window have LTE CRS interference, and indicates that the interference level is light when some REs in the ZP CSI-RS detection window have LTE CRS interference. Further, when the interference level is heavy, the RB symbol level RM scheme may be regarded as a target RM scheme, and when the interference level is light, the RE level RM scheme may be summed to be regarded as a target RM scheme.

Fig. 8A-8C schematically show interface diagrams for interference cancellation according to the target RM scheme, where when LTE CRS interference is detected using ZP CSI-RS detection windows of size 1×3 corresponding to two antenna ports, as shown in fig. 8A, if LTE CRS interference is detected on all 3 REs, which indicates that the interference level is heavy, then the NR PDSCH performs rate matching on RBs of OFDM symbols 4, 7, and 11 using RB symbol-level RM scheme, as shown in fig. 8B, if LTE CRS interference is detected on only some REs, which indicates that the interference level is light, then the NR PDSCH performs rate matching on REs of OFDM symbols 4, 7, and 11 where interference is present using RE-level RM scheme, as shown in fig. 8C, and if LTE CRS interference is not detected, then the NR PDSCH turns off the RE-level RM scheme or the RB symbol-level RM scheme on OFDM symbols 4, 7, and 11. The rate matching is shown schematically in black blocks.

Fig. 9A-9C schematically show interface diagrams for interference cancellation according to the target RM scheme, when LTE CRS interference is detected using ZP CSI-RS detection windows of size 2×3 corresponding to four antenna ports, as shown in fig. 9A, if LTE CRS interference is detected on all 6 REs, which indicates that the interference level is heavy, then the NR PDSCH performs rate matching on RBs of OFDM symbols 4, 7, 8, 11 using the RB symbol-level RM scheme, as shown in fig. 9B, if LTE CRS interference is detected on only some REs, which indicates that the interference level is light, then the NR PDSCH performs rate matching on REs of OFDM symbols 4, 7, 8, 11 using the RE-level RM scheme, as shown in fig. 9C, and if no LTE CRS interference is detected, then the NR PDSCH turns off on OFDM symbols 4, 7, 8, 11 using the RE-level RM scheme or the RB symbol-level RM scheme. The rate matching is shown schematically in black blocks.

The communication control method of the application can be applied to any scene involving dynamic spectrum sharing of 4GLTE and 5G NR by DSS technology. Next, an interactive flow of communication control in the embodiment of the present application will be described.

Fig. 10 schematically illustrates an interactive flow diagram of the communication control method, as shown in fig. 10, and in step S1001, the DSS base station is powered on and initialized; in step S1002, a plurality of neighboring cell LTE CRS port information adjacent to an NR terminal is obtained, and an NR downlink resource distribution diagram is constructed according to the neighboring cell LTE CRS port information; in step S1003, a ZP CSI-RS detection window is determined according to the LTE CRS port information and the NR downlink resource profile; in step S1004, a ZP CSI-RS detection window is sent to the NR terminal; in step S1005, the condition triggering or the periodic triggering NR terminal performs interference detection; in step S1006, the NR terminal responds to the trigger, and starts the ZP CSI-RS signal corresponding to the ZP CSI-RS detection window to perform LTE CRS interference detection, so as to obtain an LTE CRS interference detection result; in step S1007, the LTE CRS interference detection result is sent to the DSS base station; in step S1008, the DSS base station determines a target RM mode according to the LTE CRS interference detection result, and performs interference cancellation according to the target RM mode.

In the communication control method in the embodiment of the application, a DSS base station acquires the LTE (Long term evolution) CRS (reference signal LTE) port information of a neighboring cell and constructs a new wireless NR (radio resource allocation) downlink resource distribution diagram based on the LTE CRS port information of the neighboring cell; then, a zero-power channel state reference signal ZP CSI-RS detection window is determined according to LTE CRS port information and an NR downlink resource distribution diagram, the ZP CSI-RS detection window is sent to an NR terminal, and the NR terminal is triggered to perform neighbor LTE CRS interference detection according to a ZP CSI-RS signal corresponding to the ZP CSI-RS detection window; and finally, receiving an LTE CRS interference detection result sent by the NR terminal, determining a target rate matching RM mode according to the LTE CRS interference detection result, and eliminating the LTE CRS interference signal of the neighboring cell according to the target RM mode. According to the communication control method, according to the number of LTE CRS ports, RE starting positions corresponding to LTE CRS interference and then the degree of the LTE CRS interference, RE-level RM mode and symbol-level RM mode can be adaptively switched, the LTE CRS interference signals are accurately and rapidly eliminated, the full utilization of RE resources of NR PDSCH is guaranteed, further NR downlink rate is improved, user experience is improved, DSS network performance and resource utilization rate are improved, and DSS equipment construction, operation and cost are reduced.

The present application also provides a communication control device, fig. 11 shows a schematic structural diagram of the communication control device, and the communication control device 1100 is configured in a DSS base station, as shown in fig. 11, the communication control device 1100 may include an interference signal diagram construction module 1101, a detection window determination module 1102, and an interference cancellation module 1103, specifically:

an interference signal diagram construction module 1101, configured to obtain LTE CRS port information of a neighboring cell long term evolution cell, and construct a new air interface NR downlink resource distribution diagram based on the LTE CRS port information of the neighboring cell;

a detection window determining module 1102, configured to determine a ZP CSI-RS detection window of a zero power channel state reference signal according to the LTE CRS port information and the NR downlink resource distribution map, send the ZP CSI-RS detection window to an NR terminal, and trigger the NR terminal to perform LTE CRS interference detection according to a ZP CSI-RS signal corresponding to the ZP CSI-RS detection window;

the interference cancellation module 1103 is configured to receive an LTE CRS interference detection result sent by the NR terminal, determine a target rate matching RM mode according to the LTE CRS interference detection result, and cancel an LTE CRS interference signal of a neighboring cell according to the target RM mode.

In an exemplary embodiment of the present application, the interference signal diagram construction module 1101 is configured to: when the neighbor LTE CRS port information is two ports and LTE CRS interference signals exist, configuring the LTE CRS interference signals in a first target RE corresponding to a first OFDM symbol, a second OFDM symbol and a third OFDM symbol in an initial NR downlink resource distribution diagram so as to acquire the NR downlink resource distribution diagram; when the neighbor LTE CRS port information is four ports and LTE CRS interference signals exist, configuring the LTE CRS interference signals in a second target RE corresponding to the first OFDM symbol, the second OFDM symbol, the third OFDM symbol, and a fourth OFDM symbol in the initial NR downlink resource distribution diagram, so as to obtain the NR downlink resource distribution diagram; wherein the first OFDM symbol, the second OFDM symbol, the third OFDM symbol, and the fourth OFDM symbol are identical to a portion of OFDM symbols corresponding to the NR PDSCH channel, and the second OFDM symbol and the fourth OFDM symbol are adjacent in time domain; and the positions of the first target RE and the second target RE are determined according to the remainder of the adjacent cell physical cell identification PCI corresponding to the LTE CRS interference signal after the modulo 3 is performed.

In an exemplary embodiment of the present application, the interference signal diagram construction module 1101 is configured to: when the remainder is m, taking REs corresponding to the first OFDM symbol, the second OFDM symbol and the third OFDM symbol in the (m+1+3n) th subcarrier as the first target REs, wherein m=0, 1, 2, n is a non-negative integer; and when the remainder is m, taking REs corresponding to the first OFDM symbol, the second OFDM symbol, the third OFDM symbol and the fourth OFDM symbol in the (m+1+3n) th sub-carrier as the second target RE, wherein m=0, 1, 2 and n are nonnegative integers.

In an exemplary embodiment of the present application, the detection window determining module 1102 is configured to: when the LTE CRS port information is two ports, taking any RE in the first target RE as a reference RE, taking the position of the reference RE as a starting position, and setting the ZP CSI-RS detection window with the specification of 1 RE in width and 3 RE in height; when the LTE CRS port information is four ports, two adjacent REs in the second target RE are used as reference REs, the position of the reference RE is used as a starting position, and the ZP CSI-RS detection window is set according to specifications of 2 REs in width and 3 REs in height.

In an exemplary embodiment of the present application, the communication control apparatus 1100 includes: the rule generation unit is used for acquiring the neighbor LTE CRS mode information when acquiring the neighbor LTE CRS port information, and determining a detection window generation rule according to the neighbor LTE CRS mode information; the window determining unit is used for determining the ZP CSI-RS detection window based on the detection window generation rule after the NR downlink resource distribution diagram is obtained through construction; the neighbor LTE CRS pattern information includes LTE CRS pattern information corresponding to a plurality of LTE cells, where the neighbor LTE CRS pattern information is a remainder of PCI modulo 3 corresponding to each LTE cell.

In an exemplary embodiment of the present application, the rule generating unit is configured to: when the neighbor LTE CRS pattern information is different and the neighbor LTE CRS port information is two ports, the detection window generation rule is: taking any RE used for configuring an LTE CRS interference signal of a neighboring cell as a reference RE, taking the reference RE as a starting RE, and generating a ZP CSI-RS detection window with a specification of 1 RE in width and 3 RE in height; when the LTE CRS pattern information of each neighboring cell is different and the LTE CRS port information of the neighboring cell is four ports, the detection window generation rule is: taking any two adjacent time-domain REs used for configuring neighbor LTE CRS interference signals as reference REs, taking the reference REs as initial REs, and generating a ZP CSI-RS signal detection window with the specification of 2 REs in width and 3 REs in height; when the LTE CRS pattern information of each neighboring cell is the same and the LTE CRS port information of the neighboring cell is two ports, the detection window generation rule is: taking any RE used for configuring an LTE CRS interference signal of a neighboring cell as a reference RE, taking the reference RE as a starting RE, and generating a ZP CSI-RS signal detection window with a specification of 1 RE in width and 1 RE in height; when the LTE CRS pattern information of each neighboring cell is the same and the LTE CRS port information of the neighboring cell is four ports, the detection window generation rule is: and taking any two adjacent time domains of RE used for configuring LTE CRS interference signals as reference RE, taking the reference RE as initial RE, and generating a ZP CSI-RS signal detection window with the specification of 2 RE wide and 1 RE high.

In an exemplary embodiment of the present application, the interference cancellation module 1103 is configured to: when the LTE CRS interference detection result shows that the LTE CRS interference exists in the RE in the ZP CSI-RS signal detection window, taking an RB symbol level RM mode as a target RM mode; and when the LTE CRS interference detection result is that all REs in the ZP CSI-RS signal detection window have no LTE CRS interference, closing an RB symbol level RM mode.

In an exemplary embodiment of the present application, the interference cancellation module 1103 is configured to: when the LTE CRS interference detection result is that all REs in the ZP CSI-RS signal detection window have LTE CRS interference, taking an RB symbol level RM mode as the target RM mode; and when the LTE CRS interference detection result shows that the LTE CRS interference exists in part of REs in the ZP CSI-RS signal detection window, taking an RE-level RM mode as the target RM mode.

It should be noted that although in the above detailed description several modules or units of a device for action execution are mentioned, such a division is not mandatory. Indeed, the features and functions of two or more modules or units described above may be embodied in one module or unit in accordance with embodiments of the application. Conversely, the features and functions of one module or unit described above may be further divided into a plurality of modules or units to be embodied.

Furthermore, although the steps of the methods of the present application are depicted in the accompanying drawings in a particular order, this is not required to either imply that the steps must be performed in that particular order, or that all of the illustrated steps be performed, to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step to perform, and/or one step decomposed into multiple steps to perform, etc.

From the above description of embodiments, those skilled in the art will readily appreciate that the example embodiments described herein may be implemented in software in combination with the necessary hardware. Thus, the technical solution according to the embodiments of the present application may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (may be a CD-ROM, a U-disk, a mobile hard disk, etc.) or on a network, and includes several instructions to cause a computing device (may be a personal computer, a server, a mobile terminal, or a network device, etc.) to perform the method according to the embodiments of the present application.

Fig. 12 schematically illustrates a block diagram of a computer system for implementing an electronic device, which may be a device provided in an IMT interference canceller or other information processing system, according to an embodiment of the application.

It should be noted that, the computer system 1200 of the electronic device shown in fig. 12 is only an example, and should not impose any limitation on the functions and the application scope of the embodiments of the present application.

As shown in fig. 12, the computer system 1200 includes a central processing unit 1201 (Central Processing Unit, CPU) which can perform various appropriate actions and processes according to a program stored in a Read-Only Memory 1202 (ROM) or a program loaded from a storage section 1208 into a random access Memory 1203 (Random Access Memory, RAM). In the random access memory 1203, various programs and data necessary for the system operation are also stored. The cpu 1201 and the ram 1202 are connected to each other via a bus 1204. An Input/Output interface 1205 (i.e., an I/O interface) is also connected to the bus 1204.

In some embodiments, the following components are connected to the input/output interface 1205: an input section 1206 including a keyboard, a mouse, and the like; an output portion 1207 including a Cathode Ray Tube (CRT), a liquid crystal display (Liquid Crystal Display, LCD), and a speaker, etc.; a storage section 1208 including a hard disk or the like; and a communication section 1209 including a network interface card such as a lan card, a modem, or the like. The communication section 1209 performs communication processing via a network such as the internet. The driver 1210 is also connected to the input/output interface 1205 as needed. A removable medium 1211 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is installed as needed on the drive 1210 so that a computer program read out therefrom is installed into the storage section 1208 as needed.

In particular, the processes described in the various method flowcharts may be implemented as computer software programs according to embodiments of the application. For example, embodiments of the present application include a computer program product comprising a computer program embodied on a computer readable medium, the computer program comprising program code for performing the method shown in the flowcharts. In such an embodiment, the computer program can be downloaded and installed from a network via the communication portion 1209, and/or installed from the removable media 1211. The computer programs, when executed by the central processor 1201, perform the various functions defined in the system of the present application.

It should be noted that, the computer readable medium shown in the embodiments of the present application may be a computer readable signal medium or a computer readable medium, or any combination of the two. The computer readable medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples of the computer-readable medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-Only Memory (ROM), an erasable programmable read-Only Memory (Erasable Programmable Read Only Memory, EPROM), flash Memory, an optical fiber, a portable compact disc read-Only Memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In the present application, however, the computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, with the computer-readable program code embodied therein. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A computer readable signal medium may be any computer readable medium that is not a computer readable medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wired, etc., or any suitable combination of the foregoing.

The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams or flowchart illustration, and combinations of blocks in the block diagrams or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

From the above description of embodiments, those skilled in the art will readily appreciate that the example embodiments described herein may be implemented in software in combination with the necessary hardware. Thus, the technical solution according to the embodiments of the present application may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (which may be a CD-ROM, a usb disk, a mobile hard disk, etc.) or on a network, comprising several instructions for causing an electronic device to perform the method according to the embodiments of the present application.

It is to be understood that the application is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims

1. A communication control method applied to a dynamic spectrum sharing DSS base station, comprising:

acquiring neighbor Long Term Evolution (LTE) cell specific reference signal (CRS) port information, and constructing a new air interface (NR) downlink resource distribution diagram based on the neighbor LTE CRS port information;

determining a zero-power channel state reference signal ZP CSI-RS detection window according to the neighbor LTE CRS port information and the NR downlink resource distribution map, sending the ZP CSI-RS detection window to an NR terminal, and triggering the NR terminal to perform neighbor LTE CRS interference detection according to a ZP CSI-RS signal corresponding to the ZP CSI-RS detection window;

And receiving an LTE CRS interference detection result sent by the NR terminal, determining a target rate matching RM mode according to the LTE CRS interference detection result, and eliminating neighboring LTE CRS interference signals according to the target RM mode.

2. The method of claim 1, wherein the constructing an NR downlink resource profile based on the neighbor LTE CRS port information comprises:

when the neighbor LTE CRS port information is two ports and LTE CRS interference signals exist, configuring the LTE CRS interference signals in a first target RE corresponding to a first OFDM symbol, a second OFDM symbol and a third OFDM symbol in an initial NR downlink resource distribution diagram so as to acquire the NR downlink resource distribution diagram;

when the neighbor LTE CRS port information is four ports and LTE CRS interference signals exist, configuring the LTE CRS interference signals in a second target RE corresponding to the first OFDM symbol, the second OFDM symbol, the third OFDM symbol, and a fourth OFDM symbol in the initial NR downlink resource distribution diagram, so as to obtain the NR downlink resource distribution diagram;

wherein the first OFDM symbol, the second OFDM symbol, the third OFDM symbol, and the fourth OFDM symbol are identical to a portion of OFDM symbols corresponding to the NR PDSCH channel, and the second OFDM symbol and the fourth OFDM symbol are adjacent in time domain; and the positions of the first target RE and the second target RE are determined according to the remainder of the adjacent cell physical cell identification PCI corresponding to the LTE CRS interference signal after the modulo 3 is performed.

3. The method of claim 2, wherein the configuring the LTE CRS interference signal in the first target RE of the initial NR downlink resource profile corresponding to the first OFDM symbol, the second OFDM symbol, and the third OFDM symbol comprises:

when the remainder is m, taking REs corresponding to the first OFDM symbol, the second OFDM symbol and the third OFDM symbol in the (m+1+3n) th subcarrier as the first target REs, wherein m=0, 1, 2, n is a non-negative integer;

the configuring the LTE CRS interference signal in the second target RE corresponding to the first OFDM symbol, the second OFDM symbol, the third OFDM symbol, and the fourth OFDM symbol in the initial NR downlink resource profile includes:

and when the remainder is m, taking REs corresponding to the first OFDM symbol, the second OFDM symbol, the third OFDM symbol and the fourth OFDM symbol in the (m+1+3n) th sub-carrier as the second target RE, wherein m=0, 1, 2 and n are nonnegative integers.

4. The method of claim 2, wherein the determining the ZP CSI-RS detection window from the neighbor LTE CRS port information and the NR downlink resource profile comprises:

When the LTE CRS port information is two ports, taking any RE in the first target RE as a reference RE, taking the position of the reference RE as a starting position, and setting the ZP CSI-RS detection window with the specification of 1 RE in width and 3 RE in height;

when the LTE CRS port information is four ports, two adjacent REs in the second target RE are used as reference REs, the position of the reference RE is used as a starting position, and the ZP CSI-RS detection window is set according to specifications of 2 REs in width and 3 REs in height.

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

when the neighbor LTE CRS port information is acquired, neighbor LTE CRS mode information is acquired, and a detection window generation rule is determined according to the neighbor LTE CRS mode information;

after an NR downlink resource distribution diagram is constructed, determining the ZP CSI-RS detection window based on the detection window generation rule;

the neighbor LTE CRS pattern information includes LTE CRS pattern information corresponding to a plurality of LTE cells, where the neighbor LTE CRS pattern information is a remainder of PCI modulo 3 corresponding to each LTE cell.

6. The method of claim 5, wherein the determining a detection window generation rule from the LTE CRS pattern information comprises:

When the neighbor LTE CRS pattern information is different and the neighbor LTE CRS port information is two ports, the detection window generation rule is: taking any RE used for configuring an LTE CRS interference signal of a neighboring cell as a reference RE, taking the reference RE as a starting RE, and generating a ZP CSI-RS detection window with a specification of 1 RE in width and 3 RE in height;

when the LTE CRS pattern information of each neighboring cell is different and the LTE CRS port information of the neighboring cell is four ports, the detection window generation rule is: taking any two adjacent time-domain REs used for configuring neighbor LTE CRS interference signals as reference REs, taking the reference REs as initial REs, and generating a ZP CSI-RS signal detection window with the specification of 2 REs in width and 3 REs in height;

when the LTE CRS pattern information of each neighboring cell is the same and the LTE CRS port information of the neighboring cell is two ports, the detection window generation rule is: taking any RE used for configuring an LTE CRS interference signal of a neighboring cell as a reference RE, taking the reference RE as a starting RE, and generating a ZP CSI-RS signal detection window with a specification of 1 RE in width and 1 RE in height;

when the LTE CRS pattern information of each neighboring cell is the same and the LTE CRS port information of the neighboring cell is four ports, the detection window generation rule is: and taking any two adjacent time domains of RE used for configuring LTE CRS interference signals as reference RE, taking the reference RE as initial RE, and generating a ZP CSI-RS signal detection window with the specification of 2 RE wide and 1 RE high.

7. The method for controlling communications according to any one of claims 4-6, wherein the receiving the LTE CRS interference detection result sent by the NR terminal, and determining the target RM mode according to the LTE CRS interference detection result, includes:

when the LTE CRS interference detection result shows that the LTE CRS interference exists in the RE in the ZP CSI-RS signal detection window, taking an RB symbol level RM mode as a target RM mode;

and when the LTE CRS interference detection result is that all REs in the ZP CSI-RS signal detection window have no LTE CRS interference, closing an RB symbol level RM mode.

8. The communication control method according to claim 7, characterized in that the method further comprises:

when the LTE CRS interference detection result is that all REs in the ZP CSI-RS signal detection window have LTE CRS interference, taking an RB symbol level RM mode as the target RM mode;

and when the LTE CRS interference detection result shows that the LTE CRS interference exists in part of REs in the ZP CSI-RS signal detection window, taking an RE-level RM mode as the target RM mode.

9. A communication control apparatus configured in a dynamic spectrum sharing DSS base station, comprising:

the interference signal diagram construction module is used for acquiring the LTE CRS port information of the neighbor long-term evolution cell and constructing a new air interface NR downlink resource distribution diagram based on the LTE CRS port information of the neighbor;

The detection window determining module is used for determining a zero-power channel state reference signal ZP CSI-RS detection window according to the LTE CRS port information and the NR downlink resource distribution diagram, sending the ZP CSI-RS detection window to an NR terminal, and triggering the NR terminal to perform LTE CRS interference detection according to a ZP CSI-RS signal corresponding to the ZP CSI-RS detection window;

and the interference elimination module is used for receiving an LTE CRS interference detection result sent by the NR terminal, determining a target Rate Matching (RM) mode according to the LTE CRS interference detection result, and eliminating the LTE CRS interference signal of the adjacent cell according to the target RM mode.

10. A computer storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the communication control method according to any one of claims 1 to 8.

11. An electronic device, comprising:

a processor; and

a memory for storing executable instructions of the controller;

wherein the processor is configured to perform the communication control method of any one of claims 1 to 8 via execution of the executable instructions.