WO2018000199A1 - Method and apparatus for coordinating cell interference - Google Patents

Abstract

Disclosed are a method and apparatus for coordinating cell interference, which relate to the technical field of communications and can solve the problem of a complex implementation process of coordinating cell interference. In the embodiments of the present invention, a base station receives a serving cell measurement value and a neighbouring cell measurement value which are reported by a terminal in a pre-set period, determines an interference measurement value according to the serving cell measurement value and the neighbouring cell measurement value, and adjusts a transmission power of the serving cell according to the interference measurement value. The solution provided in the embodiments of the present invention is suitable for use when coordinating interference between adjacent cells.

Description

Method and device for coordinating cell interference Technical field

The present invention relates to the field of wireless communication technologies, and in particular, to a method and apparatus for coordinating cell interference.

Background technique

In the case of LTE co-frequency networking, inter-cell interference is an important factor affecting network performance. The existing cell interference coordination method is to transmit the transmission power of each TTI (Transmission Time Interval) of the cell in the time domain. Coordination, for two adjacent cells, the resources occupied by the cell on each TTI need to be separately adjusted, so that the powers of the two cells are mutually staggered, for example, cell 1 and cell 2 are neighboring cells, at TTI 1, if It is determined that the cell 1 raises the transmit power on one RE (Resource Element), and then the cell 2 must be controlled to reduce the transmit power on the same RE to achieve the purpose of reducing inter-cell interference. However, in the process of coordinating the cell interference, the coordination module needs to coordinate the transmission power of the adjacent cell in each TTI and each RE according to the coordination algorithm, and the implementation process is complicated.

Summary of the invention

Embodiments of the present invention provide a method and apparatus for coordinating cell interference, which can solve the problem that the implementation process of coordinating cell interference is complicated.

In order to achieve the above object, embodiments of the present invention adopt the following technical solutions:

In a first aspect, the application provides a method for coordinating cell interference, including:

The base station receives the serving cell measurement value and the neighboring cell measurement value reported by the terminal in a preset period, where the serving cell is a cell serving the terminal, and the neighboring cell is a cell adjacent to the serving cell; then, the base station measures according to the serving cell The value and the neighboring cell measurement determine the interference measurement value; and further adjust the transmit power of the serving cell according to the interference measurement value.

In a second aspect, the present application provides an apparatus for coordinating cell interference, comprising: means or means for performing the various steps of the above first aspect.

In a third aspect, the present application provides an apparatus for coordinating cell interference, including a processor and a memory, a memory for storing a program, and a processor calling a program stored in the memory, To perform the method provided in the first aspect of the application.

In a fourth aspect, the application provides an apparatus for coordinating cell interference, comprising at least one processing element (or chip) for performing the method of the above first aspect.

In a fifth aspect, the present application provides a program for coordinating cell interference, the program being used to perform the method of the above first aspect when executed by a processor.

In a sixth aspect, the present application provides a program product, such as a computer readable storage medium, comprising the program of the fifth aspect.

It can be seen that, in the above aspects, the base station only needs to adjust the transmit power of the serving cell according to the interference measurement value, and does not need to coordinate the transmit power of two neighboring cells, which simplifies the process of coordinating the cell interference.

In the above aspects, when the interference measurement value is less than the first preset threshold, the base station gradually amplifies the transmit power of the serving cell by using a preset step size until the interference measurement value reaches the second preset threshold or the transmit power of the serving cell reaches The preset maximum power, wherein the first preset threshold is less than or equal to the second preset threshold. Generally, the first preset threshold is set to be smaller than the second preset threshold, so that the interference measurement interval between the first preset threshold and the second preset threshold is used as a buffer for adjusting the transmit power of the serving cell to avoid ping-pong. The case of repeated adjustments.

In the above aspects, when the interference measurement value is greater than the third preset threshold, the base station gradually reduces the transmit power of the serving cell by using a preset step size until the interference measurement value is less than the fourth preset threshold or the base station reduces the transmission of the serving cell. The accumulated value of the power reaches a protection value, wherein the third preset threshold is greater than or equal to the fourth preset threshold. Generally, the third preset threshold is set to be greater than the fourth preset threshold, so that the interference measurement interval between the fourth preset threshold and the third preset threshold is used as a buffer for adjusting the transmit power of the cell to avoid ping-pong. Repeated adjustments.

In the above aspects, as an example, the serving cell measurement value is a serving cell reference signal received power RSRP measurement value, and the neighboring cell measurement value is a neighboring area RSRP measurement value; the interference measurement value is 1/log (the serving cell RSRP measurement value - Neighbor RSRP measurement).

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description are only some embodiments of the present invention, and those skilled in the art can obtain other drawings according to the drawings without any creative work.

FIG. 1 is a schematic diagram of an LTE system according to an embodiment of the present disclosure;

2 is a flowchart of a method for coordinating cell interference according to an embodiment of the present invention;

FIG. 3 is a flowchart of another method for coordinating cell interference according to an embodiment of the present invention;

FIG. 4 is an exemplary schematic diagram of a method for coordinating cell interference according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of another method for coordinating cell interference according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a logical structure of an apparatus for coordinating cell interference according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of a logical structure of a base station in a method for coordinating cell interference according to an embodiment of the present disclosure;

FIG. 8 is a schematic diagram of a logical structure of a base station according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

Hereinafter, some of the terms in the present application will be explained to be understood by those skilled in the art.

1) A terminal, also called a User Equipment (UE), is a device that provides voice and/or data connectivity to a user, for example, a handheld device with a wireless connection function, an in-vehicle device, and the like. Common terminals include, for example, mobile phones, tablets, notebook computers, PDAs, mobile internet devices (MIDs), wearable devices such as smart watches, smart bracelets, pedometers, and the like.

2), base station, also known as radio access network (RAN) A device is a device that accesses a terminal to a wireless network, including but not limited to: an evolved Node B (eNB), a radio network controller (RNC), and a Node B (Node B, NB). ), Base Station Controller (BSC), Base Transceiver Station (BTS), Home Base Station (for example, Home evolved NodeB, or Home Node B, HNB), Baseband Unit (BBU). In addition, a Wifi Access Point (AP) or the like may also be included.

3) "Multiple" means two or more. "and/or", describing the association relationship of the associated objects, indicating that there may be three relationships, for example, A and/or B, which may indicate that there are three cases where A exists separately, A and B exist at the same time, and B exists separately. The character "/" generally indicates that the contextual object is an "or" relationship.

The technical solution provided by the embodiment of the present invention can be applied to the LTE system. As shown in FIG. 1 , two cells in the LTE system are taken as an example. FIG. 1 shows the cell A corresponding to the base station A, and the signal coverage in the cell A. The terminal in the range and the cell B corresponding to the base station B are in the terminal within the signal coverage of the cell B. When there is an overlapping area between the signal coverage of the cell A and the signal coverage of the cell B, inter-cell interference occurs. In order to coordinate inter-cell interference, the prior art requires the coordination module to coordinate the cell A and the cell B according to the coordination algorithm. The TTI, the transmit power on each RE, makes the transmit power of the two cells on the same RE of the same TTI offset from each other, and the implementation process is complicated.

In order to simplify the process of coordinating inter-cell interference, the principle of the present invention is: the base station receives the measured value of the serving cell reported by the terminal and the measured value of the neighboring cell in a preset period, and determines the interference measurement value according to the measured value of the serving cell and the measured value of the neighboring cell, and then According to the interference measurement value, the transmit power of the serving cell is adjusted. Since only the transmit power of the serving cell needs to be adjusted according to the interference measurement value, the transmit power of the two cells need not be coordinated according to the coordination algorithm, so the process of coordinating the cell interference is simplified.

The technical solutions provided by the embodiments of the present invention are described in detail below based on the above principles:

In order to simplify the process of coordinating inter-cell interference, the embodiment of the present invention provides a method for coordinating cell interference, which can be applied to the LTE system shown in FIG. 1. As shown in FIG. 2, the method includes:

201. The base station receives the measured value of the serving cell and the measured value of the neighboring cell reported by the terminal in a preset period.

The serving cell is a cell serving the terminal, and the neighboring cell is a cell adjacent to the serving cell. As an example, the serving cell measurement value may be a serving cell RSRP (Reference Signal Receiving Power) measurement value, and the neighbor cell measurement value may be a neighboring cell RSRP measurement value. The measurement value of the serving cell and the neighboring cell measurement value may also be RSRQ (Reference Signal Receiving Quality) or signal to noise ratio.

It should be noted that the terminal that reports the measurement value of the serving cell and the measurement value of the neighboring cell is a terminal designated by the base station, and is generally a terminal at the cell edge.

202. The base station determines the interference measurement value according to the measured value of the serving cell and the measured value of the neighboring cell.

The interference measurement value is 1/log (the serving cell RSRP measurement value - the neighboring area RSRP measurement value), and when the serving cell measurement value and the neighboring cell measurement value are the RSRQ or the SNR, the serving cell and the neighboring cell may also be used. The signal-to-noise ratio of the RSRQ or the serving cell and the neighboring cell determines the interference measurement value.

It can be understood that the interference measurement value is used to indicate the degree of interference of the serving cell by the neighboring cell, and the greater the interference measurement value, the greater the interference of the neighboring cell to the serving cell.

203. The base station adjusts a transmit power of the serving cell according to the interference measurement value.

The method for coordinating cell interference provided by the embodiment of the present invention, the base station receives the measurement value of the serving cell reported by the terminal and the measurement value of the neighboring cell in a preset period, and determines the interference measurement value according to the measurement value of the serving cell and the measured value of the neighboring cell, and then according to the interference measurement. The value adjusts the transmit power of the serving cell. Compared with the prior art, it is required to coordinate the transmission power of the adjacent cell on each RE, so that the transmission power of the neighboring cells on the same RE is staggered, and the process of coordinating the cell interference is more complicated than the embodiment of the present invention. The transmit power of the serving cell needs to be adjusted according to the interference measurement value, and the transmission power of two adjacent cells does not need to be coordinated, which simplifies the process of coordinating cell interference.

It can be understood that the method for adjusting the transmit power of the serving cell corresponding to different interference values is also different. Based on this, in another implementation manner provided by the embodiment of the present invention, two types of adjusting the transmit power of the serving cell are provided. As shown in FIG. 3, in step 203, the base station adjusts the transmit power of the serving cell according to the interference measurement value. Now it is step 2031 or step 2032.

2031. When the interference measurement value is less than the first preset threshold, the base station gradually amplifies the transmit power of the serving cell by using a preset step size until the interference measurement value reaches a second preset threshold or the transmit power of the serving cell reaches a preset maximum power.

The first preset threshold is less than or equal to the second preset threshold. It should be noted that the first preset threshold and the second preset threshold may be equal, but when the first preset threshold is equal to the second preset threshold, the ping-pong repeated adjustment is prone to occur, so generally setting the first preset threshold The interference measurement value interval between the first preset threshold and the second preset threshold is smaller than the second preset threshold, and is used as a buffer for adjusting the transmit power of the serving cell. The following description is performed with the first preset threshold being less than the second preset threshold.

The transmit power of the serving cell in the embodiment of the present invention may specifically be the downlink reference signal transmit power. When the interference measurement value is smaller than the first preset threshold, it indicates that the neighboring cell does not interfere with the serving cell or the neighboring cell has little interference to the serving cell, and can be ignored. The transmit power of the serving cell can be amplified to increase the serving cell. As shown in FIG. 4, the cell A is a neighboring cell, and the cell B is a serving cell, and the transmit power of the cell B is amplified, and the coverage of the cell B is expanded.

It should be noted that when the base station starts to gradually amplify the transmit power of the serving cell in a preset step, the measured cell measurement value and the neighbor cell measurement value reported by the terminal are still received in a preset period, and the interference measurement value is determined. Amplifying the transmit power by one step, comparing the interference measurement value with the second preset threshold, and comparing the current transmit power of the serving cell with the preset maximum power, when determining that the interference measurement value reaches the second preset threshold When the transmission power of the serving cell reaches the preset maximum value, the automatic adjustment process is terminated.

It can be understood that, because the interference measurement value is larger, the interference of the neighboring cell to the serving cell is larger. When the interference measurement value is smaller than the second preset threshold, the interference generated by the neighboring cell to the serving cell is small and can be accepted. If the interference measurement value is greater than the second preset threshold, if the transmission power of the base station is continuously increased, the signal of the terminal at the edge of the serving cell may be excessively interfered, so that the transmission power of the base station is stopped from increasing.

2032. When the interference measurement value is greater than the third preset threshold, the base station gradually reduces the transmit power of the serving cell by using a preset step size until the interference measurement value is less than the fourth preset threshold or The base station reduces the accumulated value of the transmit power of the serving cell to a protection value.

The third preset threshold is greater than or equal to the fourth preset threshold. It should be noted that the third preset threshold and the fourth preset threshold may be equal, but when the third preset threshold is equal to the fourth preset threshold, the ping-pong repeated adjustment is prone to occur, so generally setting the third preset threshold The interference measurement value interval between the fourth preset threshold and the third preset threshold is used as a buffer for adjusting the transmit power of the cell. The following describes an example in which the third preset threshold is greater than the fourth preset threshold.

When the interference measurement exceeds the third preset threshold, it indicates that the interference of the neighboring cell to the serving cell has exceeded the extent that the terminal can withstand. Therefore, the base station needs to gradually reduce the transmit power of the serving cell by a preset step, as shown in FIG. 5. As shown, reducing the transmit power of the cell B can make the signal coverage of the cell B smaller, thereby reducing the interference between the cell A and the cell B.

It should be noted that when the signal coverage of the cell B becomes smaller, the original edge user of the cell B automatically switches to the cell with stronger signal.

When the base station starts to gradually reduce the transmit power of the serving cell in a preset step, the base station still receives the measured value of the serving cell and the measured value of the neighboring cell reported by the terminal in a preset period, thereby determining the interference measurement value, and the base station will serve the serving cell each time. The transmission power is reduced by one step, and the interference measurement value is compared with the second preset threshold. When the interference measurement value is less than the second preset threshold, the interference generated by the neighboring cell to the serving cell is within an acceptable range. Then, stop reducing the transmission power of the serving cell.

In addition, the protection value is set to prevent the transmission power of the serving cell from being reduced by a large amount. Therefore, each time the base station reduces the transmission power of the serving cell by one step, it is determined whether the accumulated value of the transmission power of the serving cell has reached the protection value. When it is reached, the base station also stops reducing the transmit power of the serving cell.

It should be noted that the second preset threshold in step 2031 and the fourth preset threshold in step 2032 may be equal.

The method for coordinating cell interference provided by the embodiment of the present invention, the base station receives the measured value of the serving cell reported by the terminal and the measured value of the neighboring cell in a preset period, and determines the interference measurement value according to the measured value of the serving cell and the measured value of the neighboring cell, when the interference measurement value is used. When the threshold is smaller than the first preset threshold, the base station gradually amplifies the transmit power of the serving cell by using a preset step, until the interference measurement When the quantity reaches the second preset threshold or the transmit power of the serving cell reaches the preset maximum power, when the interference measurement value is greater than the third preset threshold, the base station gradually reduces the transmit power of the serving cell by using a preset step size until the interference measurement The value is less than the fourth preset threshold. Compared with the prior art, it is required to coordinate the transmission power of the neighboring cells on each RE, so that the transmission power of the neighboring cells on the same RE is staggered, and the process of coordinating the cell interference is more complicated. The edge terminal of the serving cell selects the measurement report value of the serving cell RSRP and the measured value of the RSRP of the neighboring cell to determine the interference measurement value, and then adjusts the transmit power of the serving cell according to the interference measurement value, and determines the inter-cell interference according to the interference measurement value. When the time is large, the transmit power of the serving cell is reduced. When it is determined that there is almost no adjacent cell interference, the transmit power of the serving cell is increased. In the process of reducing inter-cell interference, only the serving cell is adjusted according to the interference measurement value. The transmit power does not need to coordinate the transmit power of two neighboring cells, which simplifies the process of coordinating cell interference, and ensures that the signal coverage of the serving cell is increased without inter-cell interference exceeding the acceptable range. Loss of frequency domain resources or time domain resources.

Corresponding to the foregoing method embodiment, the embodiment of the present invention provides a device for coordinating cell interference, which can be set in a base station. As shown in FIG. 6, the device includes: a receiving unit 601, a determining unit 602, and an adjusting unit 603.

The receiving unit 601 is configured to receive, by using a preset period, a serving cell measurement value and a neighboring cell measurement value reported by the terminal, where the serving cell is a cell serving the terminal, and the neighboring cell is a cell adjacent to the serving cell;

The measurement value of the serving cell is the RSRP measurement value of the reference signal received by the serving cell, and the measurement value of the neighboring cell is the RSRP measurement value of the neighboring cell;

a determining unit 602, configured to determine, according to the serving cell measurement value received by the receiving unit 601 and the neighboring cell measurement value, the interference measurement value;

The interference measurement is 1/log (serving cell RSRP measurement - neighboring RSRP measurement).

The adjusting unit 603 is configured to adjust the transmit power of the serving cell according to the interference measurement value determined by the determining unit 602.

In another embodiment of the present invention, the adjusting unit 603 is further configured to: when the interference measurement value is less than the first preset threshold, gradually increase the transmit power of the serving cell by using a preset step size until the interference measurement value reaches the second preset. Threshold or serving cell's transmit power reaches the preset The maximum power, wherein the first preset threshold is less than or equal to the second preset threshold.

Generally, the first preset threshold is smaller than the second preset threshold.

In another embodiment of the present invention, the adjusting unit 603 is further configured to: when the interference measurement value is greater than the third preset threshold, gradually reduce the transmit power of the serving cell by using a preset step size until the interference measurement value is less than the fourth pre- The threshold value or the base station reduces the cumulative value of the transmit power of the serving cell to reach a protection value, wherein the third preset threshold is greater than or equal to the fourth preset threshold.

Generally, the third preset threshold is greater than the fourth preset threshold.

It should be noted that the second preset threshold and the fourth preset threshold may be equal.

The apparatus for coordinating cell interference provided by the embodiment of the present invention, the receiving unit receives the measured value of the serving cell reported by the terminal and the measured value of the neighboring cell in a preset period, and then the determining unit determines the interference measurement value according to the measured value of the serving cell and the measured value of the neighboring cell, The adjusting unit then adjusts the transmit power of the serving cell according to the interference measurement value. Compared with the prior art, it is required to coordinate the transmission power of the adjacent cell on each RE, so that the transmission power of the neighboring cells on the same RE is staggered, and the process of coordinating the cell interference is more complicated than the embodiment of the present invention. The transmit power of the serving cell needs to be adjusted according to the interference measurement value, and the transmission power of two adjacent cells does not need to be coordinated, which simplifies the process of coordinating cell interference.

It should be understood that the division of each unit of the device for coordinating cell interference is only a division of logic functions, and may be integrated into one physical entity or physically separated in whole or in part. Moreover, these units may all be implemented in the form of software by means of processing component calls; or may be implemented entirely in hardware; some units may be implemented by software in the form of processing component calls, and some units may be implemented in the form of hardware. For example, the adjusting unit 603 may be a separately set processing element, or may be integrated in one chip of the base station, or may be stored in the memory of the base station in the form of program code, and is called by a processing element of the base station. Perform the functions of each of the above units. The implementation of other units is similar. In addition, all or part of these units can be integrated or implemented independently. The processing elements described herein can be an integrated circuit with signal processing capabilities. In the implementation process, each step of the above method or each of the above units may be completed by an integrated logic circuit of hardware in the processor element or an instruction in a form of software.

For example, the above units may be one or more integrated circuits configured to implement the above methods, such as one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (digital) Singnal processor (DSP), or one or more Field Programmable Gate Array (FPGA). As another example, when one of the above units is implemented in the form of a processing element scheduler code, the processing element can be a general purpose processor, such as a Central Processing Unit (CPU) or other processor that can invoke program code. As another example, these units can be integrated and implemented in the form of a system-on-a-chip (SOC).

An embodiment of the present invention further provides a device for coordinating cell interference. As shown in FIG. 7, the device is a hardware structure diagram of the device described in FIG. The device may include a memory 701, a processor 702, a transceiver 703, and a bus 704.

The memory 701 may be a ROM (Read Only Memory), a static storage device, a dynamic storage device, or a RAM (Random Access Memory). The memory 701 can store an operating system and other applications. When the technical solution provided by the embodiment of the present invention is implemented by software or firmware, the program code for implementing the technical solution provided by the embodiment of the present invention is stored in the memory 701 and executed by the processor 702.

The transceiver 703 is used for communication between the device and other devices or communication networks (such as, but not limited to, Ethernet, RAN Radio Access Network, WLAN (Wireless Local Area Network), etc.).

The processor 702 can be a general-purpose central processing unit (CPU), a microprocessor, an application specific integrated circuit (ASIC), or one or more integrated circuits for executing related programs. The technical solution provided by the embodiment of the present invention is implemented.

Bus 704 can include a path for communicating information between various components of the device, such as memory 701, transceiver 703, and processor 702.

It should be noted that although the hardware shown in FIG. 7 only shows the memory 701, the transceiver 703, and the processor 702, and the bus 704, in a specific implementation process, those skilled in the art should understand that the device also includes a normal implementation. Other devices necessary for operation Pieces. At the same time, those skilled in the art will appreciate that hardware devices that implement other functions may also be included, depending on the particular needs.

Specifically, when the device shown in FIG. 7 is used to implement the device shown in the embodiment of FIG. 6, the transceiver 703 is configured to receive the measured value of the serving cell and the neighboring cell measured by the terminal in a preset period. The serving cell is a cell serving the terminal, and the neighboring cell is a cell adjacent to the serving cell;

The processor 702 is coupled to the memory 701 and the transceiver 703, and configured to determine the interference measurement value according to the serving cell measurement value and the neighboring cell measurement value, and adjust the transmit power of the serving cell according to the interference measurement value.

The measurement value of the serving cell is the RSRP measurement value of the reference signal received by the serving cell, and the measurement value of the neighboring cell is the neighboring area RSRP measurement value; the interference measurement value is 1/log (the serving cell RSRP measurement value - the neighboring area RSRP measurement value).

The processor 702 is further configured to: when the interference measurement value is less than the first preset threshold, gradually increase the transmit power of the serving cell by using a preset step, until the interference measurement value reaches a second preset threshold or the transmit power of the serving cell reaches a pre-predetermined The maximum power is set, wherein the first preset threshold is less than or equal to the second preset threshold.

Generally, the first preset threshold is smaller than the second preset threshold.

The processor 702 is further configured to: when the interference measurement value is greater than the third preset threshold, gradually reduce the transmit power of the serving cell by using a preset step size until the interference measurement value is less than the fourth preset threshold or the base station reduces the transmission of the serving cell. The accumulated value of the power reaches a protection value, wherein the third preset threshold is greater than or equal to the fourth preset threshold.

Generally, the third preset threshold is greater than the fourth preset threshold.

The apparatus for coordinating cell interference provided by the embodiment of the present invention, the transceiver receives the measured value of the serving cell and the measured value of the neighboring cell reported by the terminal in a preset period, and then the processor determines the interference measurement value according to the measured value of the serving cell and the measured value of the neighboring cell, The transmit power of the serving cell is adjusted according to the interference measurement value. Compared with the prior art, it is required to coordinate the transmission power of the adjacent cell on each RE, so that the transmission power of the neighboring cells on the same RE is staggered, and the process of coordinating the cell interference is more complicated than the embodiment of the present invention. The transmit power of the serving cell needs to be adjusted according to the interference measurement value, and the transmission power of two adjacent cells does not need to be coordinated, which simplifies the process of coordinating cell interference.

Referring to FIG. 8, FIG. 8 is a schematic structural diagram of a base station according to an embodiment of the present invention. As shown in FIG. 8, the base station includes an antenna 810, a radio frequency device 820, and a baseband device 830. The antenna 810 is connected to the radio frequency device 820. In the uplink direction, the radio frequency device 820 receives the information transmitted by the terminal through the antenna 810, and transmits the information sent by the terminal to the baseband device 830 for processing. In the downlink direction, the baseband device 830 processes the information of the terminal and sends it to the radio frequency device 820. The radio frequency device 820 processes the information of the terminal and sends it to the terminal via the antenna 810.

The above means for coordinating cell interference may be located in baseband device 830. In one implementation, each of the above units is implemented in the form of a processing element scheduler code, such as baseband device 830 including processing element 831 and storage element 832, and processing element 831 invoking storage The program code stored by element 832 is to perform the method of the above method embodiments. In addition, the baseband device 830 may further include an interface 833 for interacting with the radio frequency device 820, such as a common public radio interface (CPRI).

In another implementation, the above units may be one or more processing elements configured to implement the above methods, and the processing elements may be integrated circuits, such as: one or more ASICs, or one or more DSPs, or , one or more FPGAs, etc. These integrated circuits can be integrated to form a chip.

In another implementation, the above various units may be integrated together in the form of a system-on-a-chip (SOC), for example, the baseband device 830 includes a SOC chip for implementing the above method. The processing component 831 and the storage component 832 may be integrated in the chip, and the functions of the above method or the above units may be implemented by the processing component 831 calling the storage component 832; or, at least one integrated circuit may be integrated in the chip for implementing the above method. Or the functions of the above units; or, in combination with the above implementation manner, the functions of some units are implemented by the processing element calling program code, and the functions of some units are implemented by the form of an integrated circuit.

Regardless of the manner, in summary, the above means for coordinating cell interference includes at least one processing element, a storage element and a communication interface, wherein at least one of the processing elements is used to perform the method provided by the above method embodiments. The processing element may perform the first part of the above method embodiment in a manner of executing the program code stored in the storage element in a first manner Part or all of the steps of the foregoing method embodiments may be performed in the second manner: the integrated logic circuit of the hardware in the processor component is combined with the instructions; of course, the first mode may also be combined And the second method performs the method provided by the above method embodiment.

The processing elements herein are the same as described above, and may be a general purpose processor, such as a Central Processing Unit (CPU), or may be one or more integrated circuits configured to implement the above method, for example: one or more specific An Application Specific Integrated Circuit (ASIC), or one or more digital singnal processors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs).

The storage element can be a memory or a collective name for a plurality of storage elements.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by means of software plus necessary general hardware, and of course, by hardware, but in many cases, the former is a better implementation. . Based on the understanding, the technical solution of the present invention, which is essential or contributes to the prior art, can be embodied in the form of a software product stored in a readable storage medium, such as a floppy disk of a computer. A hard disk or optical disk, etc., includes instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform the methods described in various embodiments of the present invention.

The above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the appended claims.

Claims (12)

A method for coordinating cell interference, comprising: Receiving, by the base station, the serving cell measurement value and the neighboring cell measurement value reported by the terminal, where the serving cell is a cell serving the terminal, and the neighboring cell is a cell adjacent to the serving cell; The base station determines an interference measurement value according to the serving cell measurement value and the neighboring cell measurement value; The base station adjusts a transmit power of the serving cell according to the interference measurement value. The method according to claim 1, wherein the base station adjusts the transmit power of the serving cell according to the interference measurement value, including: When the interference measurement value is smaller than the first preset threshold, the base station gradually amplifies the transmit power of the serving cell by using a preset step size until the interference measurement value reaches a second preset threshold or the serving cell The transmit power reaches a preset maximum power, wherein the first preset threshold is less than or equal to the second preset threshold. The method according to claim 2, wherein the first preset threshold is smaller than the second preset threshold. The method according to claim 1, wherein the base station adjusts the transmit power of the serving cell according to the interference measurement value, including: When the interference measurement value is greater than the third preset threshold, the base station gradually reduces the transmit power of the serving cell by using a preset step size until the interference measurement value is less than a fourth preset threshold or the base station is lowered. The cumulative value of the transmit power of the serving cell reaches a protection value, wherein the third preset threshold is greater than or equal to the fourth preset threshold. The method according to claim 4, wherein the third preset threshold is greater than the fourth preset threshold. The method according to any one of claims 1 to 5, wherein the serving cell measurement value is a serving cell reference signal received power RSRP measurement value, and the neighbor cell measurement value is a neighboring cell RSRP measurement value; The interference measurement value is 1/log (the serving cell RSRP measurement value - the neighboring area RSRP measurement value). A device for coordinating cell interference, comprising: a receiving unit, configured to receive, by using a preset period, a serving cell measurement value reported by the terminal, and a neighboring cell measurement value, where the serving cell is a cell serving the terminal, and the neighboring cell is a cell adjacent to the serving cell; a determining unit, configured to determine an interference measurement value according to the serving cell measurement value received by the receiving unit and the neighboring cell measurement value; And an adjusting unit, configured to adjust a transmit power of the serving cell according to the interference measurement value determined by the determining unit. The device of claim 7 wherein: The adjusting unit is configured to gradually amplify the transmit power of the serving cell by using a preset step size when the interference measurement value is less than the first preset threshold, until the interference measurement value reaches a second preset threshold or The transmit power of the serving cell reaches a preset maximum power, where the first preset threshold is less than or equal to the second preset threshold. The device according to claim 8, wherein the first preset threshold is smaller than the second preset threshold. The device of claim 7 wherein: The adjusting unit is configured to gradually reduce the transmit power of the serving cell by using a preset step size when the interference measurement value is greater than a third preset threshold, until the interference measurement value is less than a fourth preset threshold or The base station reduces the accumulated value of the transmit power of the serving cell to a protection value, where the third preset threshold is greater than or equal to the fourth preset threshold. The device according to claim 10, wherein the third preset threshold is greater than the fourth preset threshold. The apparatus according to any one of claims 7 to 11, wherein the serving cell measurement value is a serving cell reference signal received power RSRP measurement value, and the neighboring cell measurement value is a neighboring area RSRP measurement value; The interference measurement value is 1/log (the serving cell RSRP measurement value - the neighboring area RSRP measurement value).

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