Signal interference control method, LTE system, physical layer device, and storage medium

Abstract

The present application provides a signal interference control method, an LTE system, a physical layer device, and a storage medium. The signal interference control method includes a step (S110) of determining target location information including a location allocation status in a transmission spectrum of a first RB, which is a set of spectrum resources that will not be used at a next time, and a step (S120) of the physical layer device determining a target CRS, which is a CRS corresponding to the first RB at the next time, based on the target location information, and transmitting the target location information to the physical layer device so as to reduce transmission power of the target CRS.

Description

[Technical Field]

[0001] This application is filed based on a Chinese patent application bearing application number 202210275997.6 and filed on March 21, 2022, and claims priority to that Chinese patent application, the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the field of wireless communications, but is not limited thereto, and in particular to a signal interference control method, an LTE system, a physical layer device, and a storage medium. [Background technology]

[0003] With the development of 5th Generation (5G) technology, the number of 5G New Radio (5GNR) devices is increasing, but the proportion of users using 4th Generation (4G) Long Term Evolution (LTE) devices remains high. To meet the communication needs of various methods, Dynamic Spectrum Sharing (DSS) technology is now being used to deploy LTE and NR systems on the same spectrum, allowing the two systems to simultaneously use the same spectrum resources.

[0004] While the LTE system transmits a CRS at each transmission time interval (TTI), the CRS is usually transmitted over the entire bandwidth, which can easily cause interference in the NR system channel and reduce the spectrum efficiency of the NR system. According to the relevant protocol, the NR system channel performs resource element (RE)-level rate matching on the CRS of the cell's resource block (RB), and then reduces CRS interference through reduced-order scheduling. However, the existing protocol does not address how to reduce CRS interference from neighboring cells, which still affects the spectrum efficiency and user experience of the NR system. Summary of the Invention [Problem to be solved by the invention]

[0005] The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.

[0006] The embodiments of the present application provide a signal interference control method, an LTE system, a physical layer device, and a storage medium. [Means for solving the problem]

[0007] According to a first aspect, an embodiment of the present application provides a signal interference control method applied to an LTE system communicatively connected to a physical layer device, the method comprising: determining target location information, the target location information including a location allocation status in a transmission spectrum of a first RB, the first RB being a set of spectrum resources that will not be used at a next time; The present invention provides a signal interference control method, which includes a step of determining a target CRS based on the target location information by the physical layer device, and transmitting the target location information to the physical layer device so as to reduce the transmission power of the target CRS, wherein the target CRS is the CRS corresponding to the first RB at the next time.

[0008] According to a second aspect, an embodiment of the present application is a signal interference control method applied to a physical layer device communicatively connected to an LTE system, comprising: acquiring target location information transmitted by the LTE system, the target location information including a location allocation status in a transmission spectrum of a first RB, the first RB being a set of spectrum resources that will not be used at a next time; The present invention provides a signal interference control method, which includes a step of determining a target CRS based on the target location information and reducing the transmission power of the target CRS, wherein the target CRS is a CRS corresponding to the first RB at the next time.

[0009] According to a third aspect, an embodiment of the present application provides an LTE system including a memory, a processor, and a computer program stored in the memory and executable by the processor, the computer program executing the processor realizing the signal interference control method described in the first aspect.

[0010] According to a fourth aspect, an embodiment of the present application provides a physical layer device including a memory, a processor, and a computer program stored in the memory and executable by the processor, the computer program executing the processor realizing the signal interference control method described in the second aspect.

[0011] According to a fifth aspect, an embodiment of the present application provides a computer-readable storage medium storing computer-executable instructions for performing the signal interference control method according to the first aspect or the signal interference control method according to the second aspect.

[0012] Other features and advantages of the present application will be set forth in the following description, and in part will be obvious from the description, or may be learned by the practice of the present application. The objectives and other advantages of the present application may be achieved and obtained by the structure particularly pointed out in the written description, claims and drawings. The drawings are used to provide a further understanding of the technical solution of the present application, constitute a part of the specification, and are used to interpret the technical solution of the present application together with the examples of the present application, and are not intended to limit the technical solution of the present application. [Brief explanation of the drawings]

[0013] [Figure 1] 1 is a flowchart of a signal interference control method applied to an LTE system according to an embodiment of the present application. [Figure 2] FIG. 2 is a schematic diagram of a DSS cell according to another embodiment of the present application. [Figure 3] 10 is a flowchart of determining the first RB and the second RB according to another embodiment of the present application; [Figure 4] 10 is a flowchart of determining target location information according to another embodiment of the present application; [Figure 5] 10 is a flowchart of reducing target CRS transmit power according to another embodiment of the present application; [Figure 6] 10 is a flowchart of recovering a target CRS transmit power according to another embodiment of the present application; [Figure 7] 4 is a flowchart of a signal interference control method applied to a physical layer device according to another embodiment of the present application; [Figure 8] 10 is a flowchart of determining a target power according to another embodiment of the present application; [Figure 9] 10 is a flowchart of recovering a target CRS transmit power according to another embodiment of the present application; [Figure 10] 1 is an example of a flowchart according to the present application. [Figure 11] FIG. 1 is a diagram illustrating the configuration of an LTE system according to another embodiment of the present application. [Figure 12] FIG. 2 is a block diagram of a physical layer device according to another embodiment of the present application. DETAILED DESCRIPTION OF THE INVENTION

[0014] In order to clarify the purpose, technical solution and advantages of the present application, the present application will be described in more detail below with reference to the drawings and examples. The specific examples described in this specification are only used to interpret the present application, and are not used to limit the present application.

[0015] Although functional modules are divided in the schematic diagram of the device and a logical order is shown in the flowchart, in some cases the division of modules in the device may differ, or the steps shown or described may be performed in a different order from that in the flowchart. Terms such as "first," "second," etc. in this specification, claims, or the above drawings are used to distinguish between similar objects and are not necessarily used to describe a specific order or priority.

[0016] The present application provides a signal interference control method, an LTE system, a physical layer device, and a storage medium. The signal interference control method includes the steps of: determining target location information, where the target location information includes a location allocation status in the transmission spectrum of a first RB, and the first RB is a set of spectrum resources that will not be used at a next time; and determining a target CRS based on the target location information and transmitting the target location information to the physical layer device, so as to reduce the transmission power of the target CRS, where the target CRS is a CRS that corresponds to the first RB at a next time. According to the technical solution of this embodiment, a power reduction process is performed on the target CRS, thereby reducing channel interference caused by the target CRS to adjacent cells and improving the spectrum efficiency of the adjacent cells, thereby improving the user experience of the communication system.

[0017] The LTE system in this embodiment may be deployed in a DSS cell shown in FIG. 2. An LTE system and an NR system, or a network covered by both an LTE system and an NR system, are deployed in the DSS cell D. Systems that share spectrum with the LTE system or have the same coverage area may include, in addition to the NR system, a Universal Mobile Telecommunications System (UMTS), a Global System for Mobile Communications (GSM), or a 6th Generation (6G) mobile communication system. In this embodiment, the type of system deployed together with the LTE system is not particularly limited, as long as the transmission channel of this co-deployed system is subject to CRS signal interference from the LTE system and its transmission performance is affected by this interference. The transmission channel subject to CRS interference may be a Physical Downlink Shared Channel (PDSCH) of the NR system. In this embodiment, the type of transmission channel is not particularly limited.

[0018] Hereinafter, the embodiments of the present application will be further described with reference to the drawings. Unless otherwise specified, the embodiments of the present application will take as an example a case where an LTE system is deployed in a DSS cell, an NR system is also deployed in this DSS cell, and the transmission channel affected by the CRS of the NR system is an NR PDSCH. This is for the purpose of facilitating the description of the technical solution of the present application, and does not limit the technical solution of the present application.

[0019] As shown in Figure 1, Figure 1 is a flowchart of a signal interference control method according to an embodiment of the present application, which is applied to an LTE system communicatively connected to a physical layer device, and includes, but is not limited to, step S110 and step S120.

[0020] Step S110: Determine target location information including a location allocation status in the transmission spectrum of the first RB, which is a set of spectrum resources that will not be used at the next time.

[0021] In two adjacent cells, the CRS of each LTE system is transmitted over the entire frequency band, so the CRS of the own cell interferes not only with the NR PDSCH of the own cell but also with the NR PDSCH of the adjacent cell. For example, in the example shown in Fig. 2, when a DSS-A cell and a DSS-B cell are adjacent cells, the CRS signal of the DSS-A cell remains transmitted over the entire frequency band when signal transmission is performed in the RB allocated and used by the NR system of the DSS-B cell, causing interference with the NR PDSCH of the DSS-B cell and reducing the spectrum efficiency of the NR system of the DSS-B cell. In this case, in this embodiment, the transmission power of the CRS is reduced to reduce the interference of the CRS of the own cell with the NR PDSCH of the adjacent cell.

[0022] The LTE system is not fully scheduled at all times. In the DSS cells shown in Fig. 2, both the DSS-A cell and the DSS-B cell have some RBs scheduled by the LTE system, and if CRS power reduction processing is performed on the allocated and used RBs, the channel prospect and access performance of the LTE terminals in the own cell will deteriorate. Therefore, in this embodiment, the scheduling module of the LTE system determines a set of spectrum resources that will not be used at the next time as the first RB, and performs power reduction processing only on the CRS of the first RB, thereby reducing interference with the NR PDSCH of the neighboring cell due to the CRS at the spectrum position corresponding to the first RB, improving the scheduling spectrum efficiency of the NR system of the neighboring cell and preventing adverse effects on the channel prospect and access of the LTE terminals in the own cell.

[0023] The target location information may be in any form, such as a set of locations where the first RB is located or general bitmap information, and those skilled in the art may select a specific form of the target location information according to actual needs, but there is no particular limitation here, as long as the physical layer device can recognize the location of the first RB.

[0024] After the DSS cell is successfully established and the NR system and the LTE system begin to operate normally, the NR system of the own cell performs RE-level rate matching and reduced-order scheduling for the LTE CRS position according to the relevant protocols, thereby reducing the interference caused by the CRS of the own cell to the NR PDSCH of the own cell. The specific procedures are well known to those skilled in the art and will not be described here.

[0025] Step S120: The physical layer device determines a target CRS, which is the CRS corresponding to the first RB at the next time, based on the target location information, and transmits the target location information to the physical layer device so as to reduce the transmission power of the target CRS.

[0026] Since power adjustment of the CRS is usually performed by physical layer equipment, after determining the first RB, target location information including the position of the first RB is determined, and the physical layer equipment determines the position of the first RB from the target location information, determines the CRS corresponding to the position of the first RB as the target CRS, and performs power reduction processing on this target CRS at the next time, thereby reducing interference with the NR PDSCH of an adjacent cell by the CRS of the own cell at the next time.

[0027] In this embodiment, the first RB is an RB that will not be used at the next time, the target CRS is a CRS that corresponds to the position of the first RB at the next time, and power reduction processing is performed before the CRS is transmitted at the next time, thereby making it possible to predict and respond to CRS interference. During the operation of the LTE system, the technical solution of this embodiment may be executed once per time or periodically, and can be determined according to actual needs.

[0028] In addition, the physical layer device can set the transmission power of the CRS. In this embodiment, after reducing the transmission power of the target CRS, the corresponding power setting parameter is subjected to resource mapping or Inverse Fast Fourier Transform (IFFT) and transmitted to the LTE system through a Remote Radio Unit (RRU), so that the LTE system can apply the power setting parameter to reduce the transmission power of the target CRS. The information interaction process between the physical layer device and the LTE system is a technique well known to those skilled in the art, and will not be described here.

[0029] In this embodiment, by reducing the transmission power of the target CRS, the target CRS propagates to the neighboring cell with lower power, thereby reducing interference with the NR PDSCH of the neighboring cell. During the implementation, there is no need to adjust the system configuration or CRS configuration of the neighboring cell, which effectively simplifies the complexity of the system configuration. There is also no need to reduce interference with the CRS additional configuration resources of the own cell, which effectively avoids a reduction in the number of available NR symbols due to the consumption of additional RE resources.

[0030] Moreover, in one embodiment, referring to FIG. 3, before performing step S110 in the embodiment shown in FIG. 1, the following steps S310, S320, and S330 are further included, but are not limited to these.

[0031] Step S310: Determine a target resource size according to the resource demand of the LTE system at the next time.

[0032] Step S320: According to the target resource size, a second RB, which is a set of spectrum resources to be used at the next time, is determined in the transmission spectrum.

[0033] Step S330: Determine a set of spectrum resources that do not belong to the second RB as the first RB.

[0034] To determine the first RB, the second RB to be used at the next time may be determined, and then a resource set other than the second RB may be determined as the first RB. The resources to be used at the next time are usually determined based on resource demand determined based on a Buffer Status Report (BSR), and the baseband module of the LTE system obtains the BSR for the next time, predicts the required target resource size based on the size of the BSR, and determines the second RB to be used from the resources available at the next time based on the target resource size.

[0035] Since the second RB can be determined by the BSR, a resource set other than the second RB can be directly determined as the first RB, thereby improving the efficiency of determining the first RB. The first RB may be one RB whose position is contiguous in the transmission spectrum, or may be a set of RBs separated by multiple positions, and in this embodiment, there is no particular limitation on the continuity of the position of the first RB.

[0036] Also, in one embodiment, referring to FIG. 4, step S110 in the embodiment shown in FIG. 1 includes, but is not limited to, the following step S410 or step S420.

[0037] Step S410: Determine the position information in the transmission spectrum of the first RB as target position information.

[0038] Step S420: A target RB bitmap for the next time of the transmission spectrum is generated, which describes the position allocation status of the first RB and the second RB in the transmission spectrum, and the target RB bitmap is determined as target position information.

[0039] In addition, after determining the position of the first RB based on the second RB, a collection of position information in the transmission spectrum of the first RB may be obtained as target position information, and the physical layer equipment may determine the CRS corresponding to the target position information as the target CRS, and the specific method of describing the position information may be determined according to actual needs.

[0040] Alternatively, the target location information may be a bitmap of the transmission spectrum. For example, taking a 20M bandwidth as an example, the target RB bitmap may be a bitmap consisting of 100 bits of 0s and 1s, where 1 represents the second RB and 0 represents the first RB. For example, as shown in FIG. 2 for a DSS-A cell, the target RB bitmap may be 111111000···00 (a total of 100 bits). After obtaining the target RB bitmap, the physical layer device can determine the location allocation status of the first and second RBs based on the distribution of 0s and 1s, providing a data basis for subsequent power parameter calculation.

[0041] Also, in one embodiment, referring to FIG. 5, step S120 in the embodiment shown in FIG. 1 includes, but is not limited to, the following steps S510, S520, and S530.

[0042] Step S510: Report the target location information to the physical layer device, so that the physical layer device determines a target resource location corresponding to the first RB based on the target location information, and determines the CRS corresponding to the target resource location as the target CRS.

[0043] Step S520: Obtain the target power of each target RE fed back from the physical layer device, where the target RE is an RE corresponding to the target CRS, and the target power is determined by an adjustment coefficient preset by the physical layer device and a reference power of each target RE, where the number of target REs is at least 1, and the preset adjustment coefficient is a positive number less than or equal to 1.

[0044] Step S530: Determine the target power as the transmission power of the corresponding target RE at the next time.

[0045] The power reduction of the target CRS can be achieved by reducing the power of the target RE. After determining the target CRS based on the target location information, the physical layer device determines each RE corresponding to the target CRS as the target RE. To set the reference power of the target RE in a higher layer, a preset adjustment coefficient is set in the physical layer device, for example, a suppression coefficient less than 1, and the product of the suppression coefficient and the reference power is set as the target power, thereby achieving power suppression of the RE. The target power of the target RE is then set in the LTE system, thereby reducing the transmission power of the target CRS.

[0046] Note that power suppression for REs can be achieved by the physical layer device re-planning the transmission power of all REs. Take the case where the target location information is a target RB bitmap as an example. After receiving the target RB bitmap, the physical layer device obtains a preset reference power. Each bit in the target RB bitmap corresponds to one RE. Therefore, the RE transmission power corresponding to a value of 1 in the target RB bitmap is the reference power E_RS, and the RE transmission power corresponding to a value of 0 is E_RS × α, where α is a preset adjustment coefficient, α∈(0,1]. The smaller the value of α, the smaller the CRS power on the corresponding RE. The specific value may be adjusted according to actual demand.

[0047] In addition, after the re-planning of the power of the RE is completed, resource mapping, IFFT transformation, etc. can be performed for the LTE system according to the provisions of the existing protocol, and then transmitted from the RRU, so that the LTE system can apply the target power of each target RE and suppress the target CRS at the next time.

[0048] In addition, in one embodiment, the method further includes a step of obtaining a reference power of each target RE fed back from the physical layer device after obtaining the target power of each target RE fed back from the physical layer device. Referring to Fig. 6, after step S530 in the embodiment shown in Fig. 5 is performed, the method further includes, but is not limited to, the following step S610 or step S620.

[0049] Step S610: If the transmission time of the target CRS satisfies the preset period, restore the transmission power of each target RE to the corresponding reference power.

[0050] Step S620: The transmission power of the target RE that satisfies the preset condition is restored to the corresponding reference power.

[0051] Note that by performing power reduction processing on the target CRS, it is possible to effectively reduce interference with the NR PDSCH of neighboring cells. However, in the case of the own cell, after CRS reduction, NR interferes with the LTE CRS, which has a certain impact on the channel prospects and access on the LTE terminal side. In order to reduce this impact, it is necessary to periodically restore the power of the target CRS.

[0052] The preset period may be a preset time. After transmitting the target CRS at the next time, a timer measures time. When the measured time reaches the preset period, suppression of the transmission power of the target CRS is stopped and the transmission power of the target RE is restored to the reference power. The specific preset period may be set according to actual demand. Of course, after the transmission power of the target RE is restored to the reference power, in order to reduce interference with the NR PDSCH of the neighboring cell, the steps of the embodiment shown in FIG. 1 may be resumed at the next time, or may be executed again after a certain period of time, and is not particularly limited here.

[0053] In addition to setting a predetermined period and timing, a predetermined condition may be set to restore the transmission power of a portion of the target RE to provide sufficient resources to the LTE terminal side. For example, the predetermined condition may be the third RB among the first RBs. The third RB is a subset of the first RB, and power restoration of the target RE is performed at a CRS position corresponding to the third RB. The predetermined condition may also be a subframe of the LTE system. Power restoration for the target RE may be performed on a fixed subframe, and interference to the LTE CRS may be configured by a multicast / multicast single frequency network (MBSFN) subframe NR.

[0054] In addition, another embodiment of the present application further provides a signal interference control method applied to a physical layer device communicatively connected to an LTE system. Referring to Figure 7, the signal interference control method includes, but is not limited to, the following steps S710 and S720.

[0055] Step S710: Obtain target location information including a location allocation status in the transmission spectrum of the first RB, which is a set of spectrum resources transmitted by the LTE system and unused at the next time.

[0056] Step S720: Based on the target location information, a target CRS that is a CRS corresponding to the first RB at the next time is determined, and the transmission power of the target CRS is reduced.

[0057] The technical solution of this embodiment is similar to that of the embodiment shown in Fig. 1, except that the implementation entity of this embodiment is a physical layer device. The physical layer device determines the location of the first RB based on the target location information reported from the LTE system, and performs power reduction processing on the target CRS transmitted at the corresponding location at the next time, thereby reducing interference with adjacent cell channels. Specific technical principles and effects may refer to the description corresponding to the embodiment shown in Fig. 1, and will not be repeated here for convenience.

[0058] In one embodiment, the target position information is Location information in the transmission spectrum of the first RB; and a target RB bitmap for the next time in the transmission spectrum, which describes the position allocation status in the transmission spectrum of the first RB and the second RB, which is a set of spectrum resources to be used at the next time.

[0059] The technical solution of this embodiment is similar to the embodiment shown in Figures 3 and 4, but differs in that this embodiment is performed by a physical layer device. After obtaining the target location information, the physical layer device determines the location of the first RB based on the specific form of the target location information, providing a data basis for realizing the power reduction process of the target CRS. The specific technical principles and effects may refer to the description corresponding to the embodiment shown in Figures 3 and 4, and will not be repeated here for convenience.

[0060] Also, in one embodiment, referring to FIG. 8, step S720 in the embodiment shown in FIG. 7 includes, but is not limited to, the following steps S810, S820, S830, and S840.

[0061] Step S810: Based on the target location information, determine a target resource location corresponding to the first RB, and determine the CRS corresponding to the target resource location as a target CRS.

[0062] Step S820: Determine the REs corresponding to the target CRS as target REs, and the number of target REs is at least one.

[0063] Step S830: Determine the target power of each target RE based on a preset adjustment coefficient, which is a positive number equal to or less than 1, and the reference power of each target RE.

[0064] Step S840: The target power of each target RE is fed back to the LTE system, so that the LTE system determines the target power as the transmission power of the corresponding target RE at the next time instant.

[0065] It should be noted that the technical solution of this embodiment is similar to the embodiment shown in Figure 5, but differs in that this embodiment is performed by a physical layer device. After obtaining the target location information, the physical layer device recalculates the transmission power of the target RE based on a preset adjustment coefficient and reference power set by an upper layer, and transmits the recalculated transmission power to the LTE system through resource mapping or IFFT transformation, thereby realizing power suppression of the target RE. For specific technical principles and effects, please refer to the description corresponding to the embodiment shown in Figure 5, and will not be repeated here for convenience.

[0066] Also, in one embodiment, referring to FIG. 9, after step S840 in the embodiment shown in FIG. 8 is executed, the following step S910 is further included, but is not limited to this.

[0067] Step S910: The LTE system transmits a reference power corresponding to each target RE to the LTE system, so that if the transmission time of the target CRS meets the predetermined period, the LTE system restores the transmission power of each target RE to the corresponding reference power, or restores the transmission power of the target RE that meets the predetermined condition to the corresponding reference power.

[0068] The technical solution of this embodiment is similar to that of the embodiment shown in Fig. 6, except that the implementation of this embodiment is performed by a physical layer device. The physical layer device simultaneously transmits the reference power and the target power to the LTE system, so that the LTE system restores the transmit power of the target RE, thereby reducing the impact of the CRS signal on the signal prospect and access of the LTE terminal. The specific technical principles and effects may refer to the description corresponding to the embodiment shown in Fig. 6, and will not be repeated here for convenience.

[0069] To further explain the technical solution of this embodiment, an example will be described below with reference to the DSS cell shown in Figure 2. In this example, an NR system and an LTE system share a transmission spectrum in the DSS cell, and the resource request is exemplified by a BSR, and the power recovery of the target RE is exemplified by timing a preset period using a CRS timer. Referring to Figure 10, this example includes, but is not limited to, the following steps S1010, S1020, S1030, S1040, and S1050.

[0070] Step S1010: The DSS cell is successfully established, and the DSS NR performs RE-level rate matching at the corresponding LTE CRS position to reduce CRS interference from the LTE cell under its own DSS.

[0071] Step S1020: The baseband module of the LTE system estimates the required RB size based on the BSR size at the next time, determines the RB positions to be allocated and used, and determines a set or bitmap information of unused RB positions based on the RB positions to be allocated and used.

[0072] Step S1030: If the CRS timer has finished timing, execute step S1020; otherwise, execute step S1040.

[0073] Step S1040: The physical layer device determines a target CRS based on a set of unused RB positions or bitmap information, and recalculates the transmission power of the RE corresponding to the target CRS based on a preset reference power and a power suppression coefficient.

[0074] Step S1050: Apply the recalculated transmission power of the RE to the LTE system, and complete the power reduction process of the target CRS.

[0075] Also, referring to FIG. 11, an embodiment of the present application further provides an LTE system 1100 including a memory 1110, a processor 1120, and a computer program stored in the memory 1110 and executable by the processor 1120.

[0076] The processor 1120 and the memory 1110 may be connected by a bus or other means.

[0077] The non-transitory software programs and instructions required to realize the signal interference control methods of the above embodiments are stored in memory 1110, and when executed by processor 1120, the signal interference control methods of the above embodiments, such as method steps S110 to S120 of FIG. 1, method steps S310 to S330 of FIG. 3, method steps S410 to S420 of FIG. 4, method steps S510 to S530 of FIG. 5, and method steps S610 to S620 of FIG. 6, are performed.

[0078] Also, referring to FIG. 12, an embodiment of the present application further provides a physical layer device 1200 including a memory 1210, a processor 1220, and a computer program stored in the memory 1210 and executable by the processor 1220.

[0079] The processor 1220 and the memory 1210 may be connected by a bus or other means.

[0080] The non-transitory software programs and instructions required to realize the signal interference control methods of the above embodiments are stored in memory 1210, and when executed by processor 1220, the signal interference control methods of the above embodiments, such as method steps S710 to S720 in FIG. 7, method steps S810 to S840 in FIG. 8, and method step S910 in FIG. 9, are performed.

[0081] The above-described device embodiments are merely schematic, and the units described as separate components may or may not be physically separated, i.e., they may be located in one place or on multiple network units respectively. According to actual needs, some or all of these modules may be selected to achieve the objectives of the aspects of this embodiment.

[0082] Furthermore, one embodiment of the present application further provides a computer-readable storage medium having computer-executable instructions stored thereon, which, when executed by a processor or a controller, for example, by a processor in the above-mentioned LTE system embodiment, causes the processor to perform the signal interference control method of the above-mentioned embodiment, for example, method steps S110 to S120 of FIG. 1, method steps S310 to S330 of FIG. 3, method steps S410 to S420 of FIG. 4, method steps S510 to S530 of FIG. 5, and method steps S610 to S620 of FIG. 6; and, when executed by a processor in the above-mentioned physical layer device, causes the processor to perform the signal interference control method of the above-mentioned embodiment, for example, method steps S710 to S720 of FIG. 7, method steps S810 to S840 of FIG. 8, and method step S910 of FIG. 9.

[0083] All or part of the steps in the methods and systems disclosed above may be implemented as software, firmware, hardware, and any suitable combination thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processor, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit. Such software may be distributed on a computer-readable medium, which may include computer storage media (or non-transitory media) and communication media (or transitory media). As known to those skilled in the art, the term computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (e.g., computer-readable instructions, data structures, program modules, or other data). Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cartridge, magnetic tape, magnetic disk storage or other magnetic storage device, or any other medium that can be used to store desired information and that can be accessed by a computer. Additionally, communication media typically includes computer-readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transmission mechanism, and may include any information delivery media, as known to those skilled in the art.

[0084] An embodiment of the present application includes the steps of: determining target location information, the target location information including a location allocation status in the transmission spectrum of a first RB, the first RB being a set of spectrum resources that will not be used at a next time; and determining a target CRS based on the target location information and transmitting the target location information to the physical layer device, so as to reduce the transmission power of the target CRS, the target CRS being the CRS that corresponds to the first RB at a next time. According to the technical solution of this embodiment, a power reduction process is performed on the target CRS, thereby reducing the channel interference caused by the target CRS to adjacent cells and improving the spectrum efficiency of the adjacent cells, thereby improving the user experience of the communication system.

[0085] Although the above describes several implementations of the present application in detail, the present application is not limited to the above embodiments, and those skilled in the art may make various equivalent modifications or substitutions without departing from the scope of the present application, and all of these equivalent modifications or substitutions are intended to be included within the scope defined by the claims of the present application.

Claims

1. 1. A signal interference control method applied to a Long Term Evolution Technology (LTE) system communicatively connected to a physical layer device, comprising: determining target location information, the target location information including a location allocation status of a first resource block (RB) in a transmission spectrum, the first RB being a set of spectrum resources that will not be used at a next time; The physical layer device determines a target cell reference signal CRS based on the target location information, and transmits the target location information to the physical layer device so as to reduce transmission power of the target CRS, wherein the target CRS is a CRS corresponding to the first RB at a next time; the step of transmitting the target location information to the physical layer device so that the physical layer device determines a target CRS based on the target location information and reduces transmission power of the target CRS, reporting the target location information to the physical layer device, so that the physical layer device determines a target resource location corresponding to the first RB based on the target location information, and determines a CRS corresponding to the target resource location as a target CRS; a step of acquiring a target power of each target resource element (RE) fed back from the physical layer device, the target RE being an RE corresponding to the target CRS, the target power being determined by an adjustment factor preset by the physical layer device and a reference power of each target RE, the number of the target REs being at least 1, and the preset adjustment factor being a positive number less than or equal to 1; determining the target power as a transmission power for the corresponding target RE at a next time instant.

2. before the step of determining target position information, determining a target resource size according to a resource demand at a next time of the LTE system; determining a second RB, which is a set of spectrum resources to be used at a next time, in the transmission spectrum according to the target resource size; The method of claim 1 , further comprising: determining a set of spectrum resources that do not belong to the second RB as the first RB.

3. The step of determining target position information comprises: determining position information of the first RB in the transmission spectrum as the target position information; Or, 3. The method of claim 2, further comprising: generating a target RB bitmap for the next time of the transmission spectrum, the target RB bitmap describing the position allocation status of the first RB and the second RB in the transmission spectrum; and determining the target RB bitmap as the target position information.

4. After the step of obtaining the target power of each target RE fed back from the physical layer device, the step of obtaining the reference power of each target RE fed back from the physical layer device is further included; After the step of determining the target power as the transmission power of the corresponding target RE at the next time, If the transmission time of the target CRS satisfies a predetermined period, restoring the transmission power of each of the target REs to the corresponding reference power; Or, The method of claim 1 , further comprising: restoring the transmission power of the target RE that satisfies a preset condition to the corresponding reference power.

5. A signal interference control method applied to a physical layer device communicably connected to an LTE system, comprising: Acquiring target location information transmitted by the LTE system, the target location information including a location allocation status in a transmission spectrum of a first RB, the first RB being a set of spectrum resources that will not be used at a next time; determining a target CRS based on the target location information and reducing transmission power of the target CRS, wherein the target CRS is a CRS corresponding to the first RB at a next time; The step of determining a target CRS based on the target location information and reducing transmission power of the target CRS includes: determining a target resource location corresponding to the first RB based on the target location information, and determining a CRS corresponding to the target resource location as a target CRS; determining an RE corresponding to the target CRS as a target RE, wherein the number of the target REs is at least 1; determining a target power for each of the target REs based on a preset adjustment coefficient, which is a positive number equal to or less than 1, and a reference power for each of the target REs; and feeding back the target power for each of the target REs to the LTE system so that the LTE system determines the target power as the transmission power for the corresponding target RE at a next time instant.

6. The target position information is Position information of the first RB in the transmission spectrum; and a target RB bitmap for the next time of the transmission spectrum, which describes the position allocation status in the transmission spectrum of the first RB and a second RB, which is a set of spectrum resources to be used at the next time.

7. After the step of feeding back the target power of each target RE to the LTE system, 6. The method of claim 5, further comprising transmitting the reference power corresponding to each of the target REs to the LTE system so that, when the transmission time of the target CRS satisfies a predetermined period, the LTE system restores the transmission power of each of the target REs to the corresponding reference power, or restores the transmission power of the target REs that satisfy a predetermined condition to the corresponding reference power.

8. An LTE system including a memory, a processor, and a computer program stored in the memory and executable by the processor, wherein the processor, when executing the computer program, realizes the signal interference control method according to any one of claims 1 to 4.

9. A physical layer device including a memory, a processor, and a computer program stored in the memory and executable by the processor, wherein the processor executes the computer program to realize the signal interference control method according to any one of claims 5 to 7.

10. A computer-readable storage medium storing computer-executable instructions for carrying out the signal interference control method according to any one of claims 1 to 7.

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