CN108347289B

CN108347289B - Interference coordination method and device

Info

Publication number: CN108347289B
Application number: CN201710061328.8A
Authority: CN
Inventors: 闫志宇; 官磊
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-01-25
Filing date: 2017-01-25
Publication date: 2020-04-03
Anticipated expiration: 2037-01-25
Also published as: CN108347289A; WO2018137554A1

Abstract

The application provides an interference coordination method and device, relates to the technical field of communication, and can solve the problem that in a scene that the sizes of scheduling resource units of two eNBs are different, any eNB cannot accurately determine the interference situation between the two eNBs according to the interference coordination information of the other eNB, so that the scheduling information of the eNB cannot be determined. The interference coordination method comprises the following steps: the method comprises the steps that first access network equipment acquires coordination information and reference information, wherein the coordination information is used for coordinating interference between the first access network equipment and second access network equipment, the reference information is used for indicating the size of an interference coordination resource unit, and the coordination information is determined according to the size of the interference coordination resource unit; the first access network equipment determines scheduling information of the first access network equipment according to the coordination information and the reference information; and the first access network equipment communicates with the terminal equipment according to the scheduling information.

Description

Interference coordination method and device

Technical Field

The embodiment of the invention relates to the technical field of communication, in particular to an interference coordination method and device.

Background

In the networking process, a scene that the coverage areas of two different cells are overlapped exists. In this scenario, there is a case where the edge frequency resources configured for 2 cells (e.g., cell a and cell B) are the same. When the edge terminal device of the cell a and the edge terminal device of the cell B use the same edge frequency resource at the same time, the access and service of the edge terminal device of the cell a may be affected, and the access and service of the edge terminal device of the cell B may also be affected, that is, interference may be generated between the cell a and the cell B, which affects the experience of the edge user of the cell a and the edge user of the cell B.

In the prior art, an Inter Cell Interference Coordination (ICIC) technique is adopted to avoid Inter Cell Interference. Specifically, an evolved node base Station (eNB) a serving the cell a generates interference coordination information of the eNB a based on a scheduling resource unit used by the eNB a, and sends the interference coordination information to an eNB B serving the cell B through an X2 interface, so that the eNB B determines scheduling information of the eNB B according to the interference coordination information, so that the eNB B is scheduled to avoid interference of the eNB a as much as possible, and interference between the cell a and the cell B is reduced.

In the above method, since the interference coordination information of eNB a is generated by eNB a based on the scheduling resource unit used by eNB a, eNB B determines the scheduling information of eNB B according to the acquired interference coordination information, which corresponds to eNB B determining the scheduling information of eNB B based on the scheduling resource unit used by eNB a. However, in a scenario where the size of the scheduling resource element used by eNB a is different from the size of the scheduling resource element used by eNB B, eNB B cannot know the scheduling resource element used by eNB a, and therefore eNB B cannot accurately determine the interference between eNB a and eNB B by using the above method, and cannot accurately determine the scheduling information of eNB B.

Disclosure of Invention

The application provides an interference coordination method and device, which can solve the problem that in a scene that the sizes of scheduling resource units of two eNBs are different, any eNB cannot accurately determine the interference situation between the two eNBs according to the interference coordination information of the other eNB, so that the scheduling information of the eNB cannot be determined.

In a first aspect, an interference coordination method is provided, in which a first access network device obtains coordination information determined according to a size of an interference coordination resource unit and reference information used for indicating the size of the interference coordination resource unit, and determines scheduling information of the first access network device according to the obtained coordination information and the reference information; and the first access network equipment communicates with the terminal equipment according to the determined scheduling information.

The first access network device in the embodiment of the present invention can obtain reference information for indicating the size of the interference coordination resource unit, and can also obtain coordination information for indicating interference between the second access network device and the first access network device, where the coordination information is determined according to the size of the interference coordination resource unit. The first access network device can acquire the degree of interference between the first access network device and the second access network device according to the reference information and the coordination information. Therefore, even if the size of the scheduling resource unit used by the first access network device is different from the size of the scheduling resource unit used by the second access network device, the first access network device can accurately determine the scheduling information used by the communication between the first access network device and the terminal device according to the reference information and the coordination information, so that the problem that the cell served by the first access network device and the cell served by the second access network device are interfered is solved, and the purpose of interference control is realized.

Optionally, in a possible implementation manner of the embodiment of the present invention, the method for the first access network device to obtain the reference information includes: the first access network equipment receives reference information sent by the second access network equipment; or, the first access network device receives reference information sent by a core network device connected to both the first access network device and the second access network device; or, the first access network device determines a working frequency band of the second access network device, and obtains the reference information according to the working frequency band of the second access network device and a preset relationship, where the preset relationship includes a corresponding relationship between the working frequency band of the second access network device and the reference information.

Optionally, in another possible implementation manner of the embodiment of the present invention, the method for the first access network device to obtain the coordination information includes: the first access network equipment receives coordination information sent by the second access network equipment; or, the first access network device receives coordination information sent by a core network device connected to both the first access network device and the second access network device.

The first access network device in the embodiment of the present invention may obtain at least one of the coordination information and the reference information from the second access network device, and may also obtain at least one of the coordination information and the reference information from the core network device.

Optionally, in another possible implementation manner of the embodiment of the present invention, the interference coordination method provided in the embodiment of the present invention further includes: and the first access network equipment acquires interference coordination priority information corresponding to the coordination information. In this way, the first access network device may determine the scheduling information of the first access network device according to the coordination information, the reference information, and the interference coordination priority information.

The interference coordination priority information in the embodiment of the invention is used for indicating the service priority of the first access network equipment and the second access network equipment. And if the service priority of the first access network equipment is higher than that of the second access network equipment, the first access network equipment determines the scheduling information of the first access network equipment according to the scheduling resource unit used by the first access network equipment. And if the service priority of the first access network equipment is lower than that of the second access network equipment, the first access network equipment determines the scheduling information of the first access network equipment according to the scheduling resource unit used by the second access network equipment. Therefore, the service of the access network equipment with higher service priority is effectively ensured.

Optionally, in another possible implementation manner of the embodiment of the present invention, the method for the first access network device to obtain the interference coordination priority information specifically includes: the first access network equipment receives interference coordination priority information sent by the second access network equipment; or, the first access network device receives the interference coordination priority information sent by the core network device.

In a second aspect, an interference coordination method is provided, in which after determining reference information indicating a size of an interference coordination resource unit and coordination information determined according to the size of the interference coordination resource unit, a second access network device sends the determined reference information and coordination information to a first access network device. Here, the coordination information is used to coordinate interference between the second access network device and the first access network device.

The reference information in the embodiment of the present invention is used for indicating the size of the interference coordination resource unit, the coordination information is used for indicating the interference between the second access network device and the first access network device, and the coordination information is determined according to the size of the interference coordination resource unit. Therefore, after the second access network device sends the reference information and the coordination information to the first access network device, the first access network device can know the degree of interference between the first access network device and the second access network device according to the reference information and the coordination information. Therefore, even if the size of the scheduling resource unit used by the first access network device is different from the size of the scheduling resource unit used by the second access network device, the first access network device can accurately determine the scheduling information used by the communication between the first access network device and the terminal device according to the reference information and the coordination information, so that the problem that the cell served by the first access network device and the cell served by the second access network device are interfered is solved, and the purpose of interference control is realized.

Optionally, in a possible implementation manner of the embodiment of the present invention, a method for sending coordination information and reference information to a first access network device by a second access network device is: the second access network equipment sends coordination information to the first access network equipment and sends reference information to the first access network equipment; or the second access network equipment sends the coordination information to the core network equipment and sends the reference information to the core network equipment; or the second access network device sends one of the coordination information and the reference information to the first access network device, and sends the other one of the coordination information and the reference information to the core network device. In the method, the core network device is connected with both the first access network device and the second access network device.

It can be seen that, in the embodiment of the present invention, the second access network device may send the coordination information and the reference information to the first access network device at the same time; or the coordination information can be sent to the first access network equipment first, and then the reference information is sent; the reference information may also be sent to the first access network device first, and then the coordination information may be sent.

Similarly, if the second access network device sends the coordination information and the reference information to the core network device first, the second access network device may send the coordination information and the reference information to the core network device at the same time; or the coordination information can be sent to the core network equipment first, and then the reference information is sent; the reference information can also be sent to the core network device first, and then the coordination information is sent. Similarly, if the core network device obtains the coordination information and the reference information, the core network device may send the coordination information and the reference information to the first access network device at the same time; or the coordination information can be sent to the first access network equipment first, and then the reference information is sent; the reference information may also be sent to the first access network device first, and then the coordination information may be sent.

No matter which way the second access network device sends the coordination information and the reference information to the first access network device, the first access network device can obtain the coordination information and the reference information determined by the second access network device, and then determine the scheduling information of the first access network device according to the coordination information and the reference information.

Optionally, in another possible implementation manner of the embodiment of the present invention, the interference coordination method provided in the embodiment of the present invention further includes: and the second access network equipment determines the size of an interference coordination resource unit corresponding to the coordination information, wherein the size of the interference coordination resource unit is determined according to the working frequency band of the second access network equipment and a preset relation. The preset relationship includes a corresponding relationship between the operating frequency band of the second access network device and the reference information.

Optionally, in another possible implementation manner of the embodiment of the present invention, the interference coordination method provided in the embodiment of the present invention further includes: and the second access network equipment determines interference coordination priority information corresponding to the coordination information and sends the determined interference coordination priority information to the first access network equipment.

In a third aspect, an interference coordination method is provided, in which a core network device connected to both a first access network device and a second access network device sends communication information including at least one of coordination information and reference information to the first access network device after acquiring the communication information. The reference information is used for indicating the size of the interference coordination resource unit, the coordination information is used for coordinating the interference between the first access network device and the second access network device, and the coordination information is determined according to the size of the interference coordination resource unit.

As can be seen from the above description, the core network device may send the coordination information and the reference information to the first access network device at the same time; or the coordination information can be sent to the first access network equipment first, and then the reference information is sent; the reference information may also be sent to the first access network device first, and then the coordination information may be sent.

Optionally, in a possible implementation manner of the embodiment of the present invention, a method for a core network device to acquire communication information includes: and the core network equipment receives the communication information sent by the second access network equipment.

Optionally, in another possible implementation manner of the embodiment of the present invention, the communication information includes reference information, and the method for the core network device to acquire the communication information includes: the core network device determines the reference information.

Optionally, in another possible implementation manner of the embodiment of the present invention, the communication information includes reference information, and after the core network device determines the reference information, the core network device further sends the determined reference information to the first access network device and the second access network device, respectively.

Optionally, in another possible implementation manner of the embodiment of the present invention, the interference coordination method provided in the embodiment of the present invention further includes: and the core network equipment determines interference coordination priority information corresponding to the coordination information and sends the interference coordination priority information to the first access network equipment.

In a fourth aspect, an access network device is provided, where the access network device is a first access network device and includes an obtaining unit and a processing unit.

The functions realized by each unit module provided by the embodiment of the invention are specifically as follows:

the acquiring unit is configured to acquire coordination information and reference information, where the coordination information is used to coordinate interference between the first access network device and the second access network device, the reference information is used to indicate a size of an interference coordination resource unit, and the coordination information is determined according to the size of the interference coordination resource unit; the processing unit is configured to determine scheduling information of the first access network device according to the coordination information and the reference information acquired by the acquisition unit, and communicate with the terminal device according to the scheduling information.

Further, in an implementation manner of the embodiment of the present invention, the size of the interference coordination resource unit is at least one of a time length of the interference coordination resource unit and a frequency width of the interference coordination resource unit.

Further, in another implementation manner of the embodiment of the present invention, the obtaining unit is specifically configured to: receiving reference information sent by second access network equipment; or, receiving reference information sent by the core network device, where the core network device is connected to both the first access network device and the second access network device. The processing unit is further configured to determine an operating frequency band of the second access network device; correspondingly, the obtaining unit is specifically configured to obtain the reference information according to the working frequency band of the second access network device and a preset relationship, where the preset relationship includes a corresponding relationship between the working frequency band of the second access network device and the reference information.

Further, in another implementation manner of the embodiment of the present invention, the obtaining unit is specifically configured to: receiving coordination information sent by second access network equipment; or, receiving coordination information sent by the core network device, where the core network device is connected to both the first access network device and the second access network device.

Further, in another implementation manner of the embodiment of the present invention, the second access network device uses at least one scheduling resource unit, and the size of the interference coordination resource unit is a time length of a scheduling resource unit with a shortest time length among the at least one scheduling resource unit, or the interference coordination resource unit is a frequency width of a scheduling resource unit with a narrowest frequency width among the at least one scheduling resource unit, or the interference coordination resource unit is a time length and a frequency width of a scheduling resource unit with a smallest number of resource units REs included in the at least one scheduling resource unit.

Further, in another implementation manner of the embodiment of the present invention, the obtaining unit is further configured to obtain interference coordination priority information corresponding to the coordination information.

Further, in another possible implementation manner of the embodiment of the present invention, the obtaining unit is specifically configured to: receiving interference coordination priority information sent by second access network equipment; or receiving the interference coordination priority information sent by the core network equipment.

In a fifth aspect, an access network device is provided, where the access network device is a first access network device and includes a communication interface, a processor, and a memory; the communication interface, the processor and the memory are connected through a system bus; the memory is configured to store computer instructions and the processor is configured to execute the computer instructions stored by the memory to cause the access network device to perform the interference coordination method as described in the first aspect and its various implementations.

In a sixth aspect, there is also provided a computer readable storage medium comprising one or more program codes; when the processor of the access network device executes the program code, the access network device performs the interference coordination method as described in the first aspect and its various possible implementations.

For a detailed description of the fourth aspect, the fifth aspect, the sixth aspect, and various implementations of the embodiments of the present invention, reference may be made to the detailed description of the first aspect and various implementations of the first aspect.

In a seventh aspect, an access network device is provided, where the access network device is a second access network device, and the access network device includes a processing unit and a sending unit.

the processing unit is configured to determine coordination information and reference information, where the coordination information is used to coordinate interference between the second access network device and the first access network device, the reference information is used to indicate a size of an interference coordination resource unit, and the coordination information is determined according to the size of the interference coordination resource unit; the sending unit is configured to send the coordination information and the reference information determined by the processing unit to the first access network device.

Further, in an implementation manner of the embodiment of the present invention, the sending unit is specifically configured to: sending coordination information to first access network equipment, and sending reference information to the first access network equipment; or the second access network equipment sends the coordination information to the core network equipment and sends the reference information to the core network equipment; or the second access network device sends one of the coordination information and the reference information to the first access network device and sends the other one of the coordination information and the reference information to the core network device; the core network equipment is connected with the first access network equipment and the second access network equipment.

Further, in another implementation manner of the embodiment of the present invention, the size of the interference coordination resource unit is at least one of a time length of the interference coordination resource unit and a frequency width of the interference coordination resource unit.

Further, in another possible implementation manner of the embodiment of the present invention, the processing unit is further configured to determine interference coordination priority information corresponding to the coordination information; the sending unit is further configured to send the interference coordination priority information determined by the processing unit to the first access network device.

In an eighth aspect, an access network device is provided, where the access network device is a second access network device, and the access network device includes a communication interface, a processor, and a memory; the communication interface, the processor and the memory are connected through a system bus; the memory is configured to store computer instructions and the processor is configured to execute the computer instructions stored by the memory to cause the access network device to perform the interference coordination method as described in the second aspect and its various implementations.

In a ninth aspect, there is also provided a computer readable storage medium comprising one or more program codes; when the processor of the access network device executes the program code, the access network device performs the interference coordination method as described in the second aspect and its various possible implementations.

For a detailed description of the seventh aspect, the eighth aspect, the ninth aspect, and various implementations of the embodiments of the present invention, reference may be made to the detailed description of the second aspect and various implementations of the second aspect.

In the embodiment of the present invention, the names of the access network devices described above do not limit the devices or the functional modules themselves, and in an actual implementation, the devices or the functional modules may appear by other names. As long as the functions of the respective devices or functional blocks are similar to those of the embodiments of the present invention, they are within the scope of the claims of the embodiments of the present invention and the equivalent techniques thereof.

A tenth aspect provides a core network device, which includes an obtaining unit and a sending unit.

the acquiring unit is configured to acquire communication information, where the communication information includes at least one of coordination information and reference information, the coordination information is used to coordinate interference between the first access network device and the second access network device, the reference information is used to indicate a size of an interference coordination resource unit, the coordination information is determined according to the size of the interference coordination resource unit, and the core network device is connected to both the first access network device and the second access network device; the sending unit is configured to send the communication information obtained by the obtaining unit to the first access network device.

Further, in an implementation manner of the embodiment of the present invention, the obtaining unit is specifically configured to receive communication information sent by the second access network device.

Further, in another possible implementation manner of the embodiment of the present invention, the communication information includes reference information, and the obtaining unit specifically determines the reference information.

Further, in another possible implementation manner of the embodiment of the present invention, the communication information includes reference information, and the sending unit is further configured to send the reference information to the first access network device and the second access network device respectively after the obtaining unit determines the reference information.

Further, in another possible implementation manner of the embodiment of the present invention, the core network device further includes a processing unit, where the processing unit is configured to determine interference coordination priority information corresponding to the coordination information acquired by the acquiring unit; the sending unit is further configured to send interference coordination priority information to the first access network device.

In an eleventh aspect, a core network device is provided, which includes a communication interface, a processor, and a memory; the communication interface, the processor and the memory are connected through a system bus; the memory is configured to store computer instructions, and the processor is configured to execute the computer instructions stored by the memory, so as to cause the core network device to perform the interference coordination method according to the third aspect and various implementations thereof.

In a twelfth aspect, there is also provided a computer readable storage medium comprising one or more program codes; when the processor of the core network device executes the program code, the core network device performs the interference coordination method as described in the third aspect and various possible implementations thereof.

In the embodiment of the present invention, the names of the core network devices do not limit the devices or the functional modules themselves, and in an actual implementation, the devices or the functional modules may appear by other names. As long as the functions of the respective devices or functional blocks are similar to those of the embodiments of the present invention, they are within the scope of the claims of the embodiments of the present invention and the equivalent techniques thereof.

For a detailed description of the tenth, eleventh, twelfth and various implementations of the embodiments of the present invention, reference may be made to the detailed description of the third and various implementations thereof.

Optionally, in the foregoing aspects and various possible implementations thereof, the size of the interference coordination resource unit is at least one of a time length of the interference coordination resource unit and a frequency width of the interference coordination resource unit.

The size of the interference coordination resource unit refers to the granularity of the interference coordination resource unit, and the granularity of the interference coordination resource unit may only consider the time domain, may also consider only the frequency domain, and may also consider the time domain and the frequency domain comprehensively.

Optionally, in each of the foregoing aspects and various possible implementations thereof, if the second access network device uses at least one scheduling Resource unit, the size of the interference coordination Resource unit is the time length of the scheduling Resource unit with the shortest time length among the at least one scheduling Resource unit used by the second access network device, or the interference coordination Resource unit is the frequency width of the scheduling Resource unit with the narrowest frequency width among the at least one scheduling Resource unit used by the second access network device, or the interference coordination Resource unit is the time length and the frequency width of the scheduling Resource unit with the smallest number of Resource units (REs) included in the at least one scheduling Resource unit used by the second access network device, or the time length of the interference coordination Resource unit is equal to the minimum value of the time length among the at least one scheduling Resource unit used by the second access network device, and the frequency width is equal to the minimum value of the frequency width in at least one scheduling resource unit used by the second access network device, or the size of the interference coordination resource unit is determined according to the working frequency band of the second access network device and a preset relationship, where the preset relationship includes a corresponding relationship between the working frequency band of the second access network device and the reference information.

Optionally, in the foregoing aspects and various possible implementations thereof, the first access network device uses at least one scheduling resource unit, and the size of the interference coordination resource unit is a time length of a scheduling resource unit with a shortest time length among the at least one scheduling resource unit used by the first access network device, or the interference coordination resource unit is a frequency width of a scheduling resource unit with a narrowest frequency width among the at least one scheduling resource unit used by the first access network device, or the interference coordination resource unit is a time length and a frequency width of a scheduling resource unit with a smallest number of resource units REs included in the at least one scheduling resource unit used by the first access network device, or the time length of the interference coordination resource unit is equal to a minimum value of the time length among the at least one scheduling resource unit used by the first access network device, and the frequency width is equal to the minimum value of the frequency width in the at least one scheduling resource unit used by the first access network equipment.

Optionally, in the foregoing aspects and various possible implementations thereof, the at least one scheduling resource unit used by the first access network device and the at least one scheduling resource unit used by the second access network device form a scheduling resource unit set, the size of the interference coordination resource unit is the time length of the scheduling resource unit with the shortest time length in the set of scheduling resource units, or, the interference coordination resource unit is the frequency width of the scheduling resource unit with the narrowest frequency width in the scheduling resource unit set, or, the interference coordination resource unit is a time length and a frequency width of a scheduling resource unit with the smallest number of resource unit REs included in the scheduling resource unit set, or, the time length of the interference coordination resource unit is equal to the minimum value of the time lengths in the scheduling resource unit set, and the frequency width is equal to the minimum value of the frequency widths in the scheduling resource unit set.

It can be seen that the size of the plurality of interference coordination resource units is the time length of the interference coordination resource unit, and the size of the interference coordination resource unit is the time length of the scheduling resource unit with the shortest time length in the at least one scheduling resource unit.

And if the size of the interference coordination resource unit is the frequency width of the interference coordination resource unit, the size of the interference coordination resource unit is the frequency width of the scheduling resource unit with the narrowest frequency width in the at least one scheduling resource unit.

If the size of the interference coordination resource unit is the time length and the frequency width of the interference coordination resource unit, the size of the interference coordination resource unit is the time length and the frequency width of the scheduling resource unit with the smallest number of resource units (REs) in the at least one scheduling resource unit, or the time length of the interference coordination resource unit is equal to the minimum value of the time length in the at least one scheduling resource unit, and the frequency width is equal to the minimum value of the frequency width in the at least one scheduling resource unit.

Optionally, in the foregoing aspects and various possible implementations thereof, when the size of the interference coordination resource unit corresponds to the size of the scheduling resource unit with the smallest time length and/or the smallest frequency width in the scheduling resource units used by the second access network device, the coordination information includes load information of the second access network device. The load information is used to indicate a change in the transmission power of the second access network device.

Specifically, the load information of the second access network device may indicate that the transmission power of the second access network device is higher or lower than a certain preset power. For example, the load information of the second access network device includes a Relative Narrowband Transmit Power (RNTP) of the second access network device. The RNTP may indicate, in a bitmap manner, whether a transmission power on each Physical Resource Block (PRB) used by the second access network device is greater than a preset power in a time period from when the second access network device determines the current coordination information to when the second access network device updates the coordination information next time.

The load information of the second access network device may also indicate a change in the transmit power of the second access network device over time. For example, the load information of the second access network device includes at least one of an Enhanced Interference Management Service Adaptation (eIMTA) configuration of the second access network device, an Almost Blank Subframe (ABS) of the second access network device, a target Time Division Duplex (TDD) configuration of the second access network device, and a Coordinated multi-point transmission (CoMP) configuration of the second access network device. The eIMTA, ABS, TDD configuration, and CoMP configuration of the second access network device each indicate which subframes the second access network device transmits information on.

The load information of the second access network device may also indicate a change in transmit power of the second access network device as the frequency changes. For example, the load information of the second access network device includes RNTP of the second access network device.

The load information of the second access network device may further indicate a change of the transmission power of the second access network device with a change of the time-frequency. For example, the load information of the second access network device includes the enhanced RNTP. The enhanced RNTP indicates whether the transmission power on each PRB used by the second access network device is greater than a preconfigured threshold on a configured subframe in a time period from when the second access network device determines the current coordination information to when the second access network device updates the coordination information next time. In this scenario, the coordination information further includes location information of the related configuration subframe.

Under the condition that the coordination information includes the load information of the second access network device, when the first access network device determines the scheduling information of the first access network device, it needs to ensure that the scheduling of the first access network device can avoid the interference of the second access network device. In this case, the size of the interference coordination resource unit corresponds to the size of the scheduling resource unit with the smallest time length and/or the smallest frequency width in the scheduling resource units used by the second access network device, so that the first access network device can accurately determine the interference caused by the second access network device.

Optionally, in the foregoing aspects and various possible implementations thereof, when the size of the interference coordination resource unit corresponds to the size of the scheduling resource unit with the smallest time length and/or the smallest frequency width in the scheduling resource units used by the first access network device, the coordination information includes first information indicating that the second access network device is interfered. In particular, the first information may indicate a distribution of interference experienced by the second access network device over time, and may also indicate a distribution of interference experienced by the second access network device over frequency.

Optionally, the first information includes an uplink interference Overload Indication (OI), where the uplink OI may indicate, in a bitmap manner, an interference Overload Indication value of the second access network device on each PRB in a time period from when the second access network device determines the current coordination information to when the second access network device updates the coordination information next time. When the value of the uplink OI is 1, the interference overload is represented; an uplink OI value of "0" indicates that the interference is not overloaded. The uplink OI describes that each PRB used by the second access network device is interfered by other access network devices when the second access network device receives signals.

Optionally, the first Information includes High Interference Information (HII), and the HII may indicate, in a bitmap manner, a High Interference sensitivity indication value of the second access network device on each PRB in a time period from when the second access network device determines the current coordination Information to when the second access network device updates the coordination Information next time. When the value of the uplink HII is 1, high interference sensitivity is represented; an uplink HII value of "0" represents low interference sensitivity. The uplink HII describes the sensitivity level of the second access network device to be interfered by other access network devices on each PRB used by the second access network device when the second access network device receives signals.

The first information may also indicate a distribution in time and frequency of interference experienced by the second access network device. For example, the first information comprises an extended uplink interference overload indication, OI, indicating an interference overload indication value for the second access network device on each PRB of the associated uplink subframes during a time period from when the second access network device determines the current coordination information to when the second access network device updates the coordination information next time. In this scenario, the coordination information further includes information of the relevant uplink subframe.

Under the condition that the coordination information includes the first information, when the first access network device determines the scheduling information of the first access network device, it needs to avoid the interference of the first access network device to the second access network device as much as possible. In this case, the size of the interference coordination resource unit corresponds to the size of the scheduling resource unit with the smallest time length and/or the narrowest frequency width in the scheduling resource units used by the first access network device, so that the first access network device can accurately determine the interference that the scheduling of the first access network device may cause to the second access network device.

These and other aspects of embodiments of the invention will be more readily apparent from the following description.

Drawings

FIG. 1 is a diagram illustrating a structure of a wireless frame in the prior art;

FIG. 2 is a diagram illustrating a resource grid in the prior art;

fig. 3 is a schematic structural diagram of a communication system according to an embodiment of the present invention;

fig. 4 is a schematic diagram of an interference coordination method provided by the prior art;

FIG. 5 is a diagram illustrating a hardware structure of a mobile phone according to an embodiment of the present invention;

FIG. 6 is a diagram illustrating a hardware structure of a base station according to an embodiment of the present invention;

fig. 7 is a first flowchart illustrating an interference coordination method according to an embodiment of the present invention;

fig. 8 is a second flowchart illustrating an interference coordination method according to an embodiment of the present invention;

fig. 9 is a third flowchart illustrating an interference coordination method according to an embodiment of the present invention;

fig. 10 is a fourth flowchart illustrating an interference coordination method according to an embodiment of the present invention;

fig. 11 is a fifth flowchart of an interference coordination method according to an embodiment of the present invention;

fig. 12 is a sixth flowchart of an interference coordination method according to an embodiment of the present invention;

fig. 13 is a first schematic structural diagram of an access network device according to an embodiment of the present invention;

fig. 14 is a schematic structural diagram of an access network device according to an embodiment of the present invention;

fig. 15 is a third schematic structural diagram of an access network device according to an embodiment of the present invention;

fig. 16 is a first schematic structural diagram of a core network device according to an embodiment of the present invention;

fig. 17 is a second schematic structural diagram of a core network device according to an embodiment of the present invention;

fig. 18 is a third schematic structural diagram of a core network device according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described in detail below with reference to the accompanying drawings in the embodiments of the present invention.

The terms "first," "second," and the like in the description and claims of the present application and in the above-described drawings are used for distinguishing between different objects and not for limiting a particular order.

In this embodiment of the present invention, the term "and/or" is only one kind of association relationship describing an associated object, and means that three relationships may exist, for example, a and/or B may represent: a exists alone, A and B exist simultaneously, and B exists alone.

In the embodiments of the present invention, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

As shown in fig. 1, in an Evolved UMTS Terrestrial radio access Network (E-UTRAN), one radio frame is 10 ms, one radio frame is composed of 20 slots, each slot is 0.5ms, two consecutive slots are one subframe, that is, one radio frame includes 10 subframes, and each subframe has a length of 1 ms.

The number of Orthogonal Frequency Division Multiplexing (OFDM) symbols included in each subframe is different according to the length of a Cyclic Prefix (CP). When the CP is a normal CP, each slot contains 7 Orthogonal Frequency Division Multiplexing (OFDM) symbols; when the CP is an extended CP, each slot contains 6 OFDM symbols.

As shown in fig. 2, the RE refers to a symbol in a time domain and a resource of a subcarrier in a frequency domain. Each RE is identified by an index pair (k, l) in one slot, where,

k and l are indices in the frequency domain and time domain, respectively.

Representing the number of resource blocks (RB for short) included in the downlink bandwidth,

represents the number of sub-carriers included in one RB,

representing the number of OFDM symbols included in one slot. Number of OFDM symbols contained in each slot

Depending on the length of the cyclic prefix and the spacing of the subcarriers, an RB is used to describe the mapping of a certain physical channel to resource elements, and one RB consists of two PRBs.

Each eNB in The E-UTRAN accesses a Mobility Management Entity (MME) in The Evolved Packet Core (EPC) network through an S1 interface. Different eNBs in the E-UTRAN are connected by an X2 interface. Each eNB is connected to at least one terminal Equipment (UE). Figure 3 shows a network architecture of a communication system comprising an E-UTRAN and an EPC network. In practical applications, the connections between the multiple devices may be wireless connections, and fig. 3 illustrates a solid line for convenience and intuition of the connection relationship between the devices.

In a conventional communication system, if coverage areas of a cell a and a cell B overlap, uplink signal interference and/or downlink signal interference exist between the cell a and the cell B, which affects uplink throughput and/or downlink throughput of the system. In the prior art, an inter-cell interference coordination technique is generally adopted to reduce the influence of inter-cell interference.

In the existing inter-cell interference coordination technology, an eNB a (serving a cell a) sends interference coordination information of the eNB a to an eNB B (serving the cell B) through an X2 interface (the eNB a generates interference coordination information of an eNBA according to scheduling resource elements used by the eNB a), which is convenient for the eNB B to determine scheduling information of the eNB B according to the interference coordination information, so that downlink transmission and/or uplink transmission corresponding to the scheduling information of the eNBB reduces interference between the cell B and the cell a as much as possible, and achieves the purpose of interference control.

Illustratively, as shown in fig. 4, the coverage of cell a and the coverage of cell B partially overlap. Edge terminal device a1 for cell a is located in the overlapping area of cell a and cell B, and edge terminal device B1 for cell B is located in the scene of the overlapping area of cell a and cell B. The eNB A and the A1 use the frequency resource f1 for communication, the eNB A sends the interference coordination information of the eNB A corresponding to the frequency resource f1 to the eNB B through an X2 interface, so that the eNB B can determine that the eNB B and the B1 use the frequency resource f2 for communication according to the interference coordination information of the eNB A, and f1 is not equal to f2, and therefore interference between downlink data transmission of the cell A and downlink data transmission of the cell B is avoided.

However, the above method is only applicable to the same scenario where the scheduling resource elements used by eNB a are the same as the scheduling resource elements used by eNB B.

A New Radio (NR) system of The fifth-Generation mobile Communication technology (5G) is required to satisfy mobile broadband enhanced, large-scale machine type Communication (mtc), Ultra-Low Reliable and Low delay Communication (URLLC). The key technology design of the NR system may adopt advanced technologies such as a channel coding scheme, a multiple access scheme, and a signal waveform, which are different from those of LTE.

Depending on the operating scenario for which the NR system is designed, both spectrum resources below 6 gigahertz (GHz) and spectrum resources above 6GHz may deploy the NR system. In this way, the size of the scheduling resource unit of the eNB in the NR system will be more flexible. In the NR system, the eNB may use at least one scheduling resource unit. For data transmitted by different scheduling resource units on the same carrier, a Frequency Division Multiplexing (FDM) mode or a Time Division Multiplexing (TDM) mode may be used for Multiplexing.

It can be seen that there may be scenarios in the NR system where the scheduled resource units used by eNB a are different from the scheduled resource units used by eNB B. For example, eNB a uses a scheduled resource element 1 with a frequency domain of 180KHz (kilohertz) and a time domain of 0.5ms (milliseconds), and eNB B uses a scheduled resource element 2 with a frequency domain of 360KHz and a time domain of 0.25 ms.

For a scenario in which a scheduling resource unit used by eNB a is different from a scheduling resource unit used by eNB B, because interference coordination information sent by eNB a to eNB B is generated according to the scheduling resource unit used by eNB a in the prior art, and eNB B cannot know the scheduling resource unit used by eNB a, eNB B cannot accurately determine scheduling information of eNB B according to the interference coordination information of eNB a acquired by eNB B, so as to achieve the purpose of interference control.

In view of the above problems, an embodiment of the present invention provides an interference coordination method, where a first access network device obtains coordination information for coordinating interference between the first access network device and a second access network device and reference information for indicating a size of an interference coordination resource unit, and the coordination information is determined according to the size of the interference coordination resource unit, so that the first access network device can obtain a degree of interference occurring between the first access network device and the second access network device. Therefore, even if the size of the scheduling resource unit used by the first access network device is different from the size of the scheduling resource unit used by the second access network device, the first access network device can accurately determine the scheduling information used by the communication between the first access network device and the terminal device according to the reference information and the coordination information, so that the problem that the cell served by the first access network device and the cell served by the second access network device are interfered is solved, and the purpose of interference control is realized.

The interference coordination method provided by the embodiment of the invention is applied to the communication system shown in fig. 3. With reference to fig. 3, the first access network device and the second access network device in the embodiment of the present invention may be enbs, and the terminal device may be a UE.

The UE in the embodiment of the present invention may be: mobile phones, tablet computers, notebook computers, Ultra-Mobile Personal computers (UMPC), netbooks, Personal Digital Assistants (PDA), and the like.

For example, in the embodiment of the present invention, the UE shown in fig. 3 may be a mobile phone, and details of various components of the mobile phone in the embodiment of the present invention are described below with reference to fig. 5. As shown in fig. 5, the mobile phone includes: a processor 51, a Radio Frequency (RF) circuit 52, a power supply 53, a memory 54, an input unit 55, a display unit 56, an audio circuit 57, and the like. Those skilled in the art will appreciate that the configuration of the handset shown in fig. 5 does not constitute a limitation of the handset, and may include more or fewer components than those shown in fig. 5, or may combine some of the components shown in fig. 5, or may be arranged differently than those shown in fig. 5.

The processor 51 is a control center of the mobile phone, connects various parts of the entire mobile phone by using various interfaces and lines, and performs various functions of the mobile phone and processes data by operating or executing software programs and/or modules stored in the memory 54 and calling data stored in the memory 54, thereby performing overall monitoring of the mobile phone. Alternatively, the processor 51 may comprise one or more processing units. Alternatively, the processor 51 may integrate an application processor and a modem processor. The application processor mainly processes an operating system, a user interface, an application program and the like; the modem processor handles primarily wireless communications. Optionally, the application processor and the modem processor may be provided independently.

The RF circuit 52 may be used for receiving and transmitting signals during information transmission and reception or during a call, and in particular, receives downlink information of a base station and then processes the received downlink information to the processor 51; in addition, the uplink data is transmitted to the base station. Typically, the RF circuitry includes, but is not limited to, an antenna, at least one Amplifier, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like. In addition, the RF circuitry 52 may also communicate with other devices via wireless communication. The wireless communication may use any communication standard or protocol, including but not limited to Global System for mobile communications (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), LTE, email, Short Message Service (SMS), etc.

The handset includes a power supply 53 (e.g., a battery) for powering the various components, and optionally the power supply may be logically connected to the processor 51 via a power management system, so that functions such as managing charging, discharging, and power consumption may be implemented via the power management system.

The memory 54 may be used to store software programs and modules, and the processor 51 executes various functional applications and data processing of the mobile phone by operating the software programs and modules stored in the memory 54. The memory 54 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, image data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 54 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The input unit 55 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the cellular phone. Specifically, the input unit 55 may include a touch screen 551 and other input devices 552. The touch screen 551, also referred to as a touch panel, may collect touch operations by a user (e.g., operations by a user on or near the touch screen 551 using any suitable object or accessory such as a finger, a stylus, etc.) and drive the corresponding connection device according to a predetermined program. Alternatively, the touch screen 551 may include two portions of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 51, and can receive and execute commands sent by the processor 51. In addition, the touch screen 551 may be implemented using various types, such as resistive, capacitive, infrared, and surface acoustic wave. Other input devices 552 may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control keys, power switch keys, etc.), and the like.

The display unit 56 may be used to display information input by or provided to the user and various menus of the cellular phone. The Display unit 56 may include a Display panel 561, and optionally, the Display panel 561 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-emitting Diode (OLED), or the like. Further, the touch screen 551 may cover the display panel 561, and when the touch screen 151 detects a touch operation thereon or nearby, the touch screen is transmitted to the processor 51 to determine the type of the touch event, and then the processor 51 provides a corresponding visual output on the display panel 561 according to the type of the touch event. Although in fig. 5 the touch screen 551 and the display panel 561 are shown as two separate components to implement the input and output functions of the handset, in some embodiments the touch screen 551 and the display panel 561 may be integrated to implement the input and output functions of the handset.

Audio circuitry 57, speaker 571, and microphone 572 for providing an audio interface between a user and a cellular telephone. The audio circuit 57 can transmit the electrical signal converted from the received audio data to the speaker 171, and convert the electrical signal into an audio signal for output through the speaker 571; on the other hand, the microphone 572 converts the collected sound signals into electrical signals, which are received by the audio circuit 57 and converted into audio data, which are output to the RF circuit 52 for transmission to, for example, another cellular phone, or to the memory 54 for further processing.

Optionally, the mobile phone may further include various sensors (such as a gyroscope sensor, a hygrometer sensor, an infrared sensor, or a magnetometer sensor), a Wireless Fidelity (Wi-Fi) module, a bluetooth module, and the like. Not shown in fig. 5.

For example, the hardware structure of the eNB shown in fig. 3 may refer to the constituent elements of the base station shown in fig. 6. As shown in fig. 6, the base station includes: the remote Radio Unit comprises a Base Band Unit (BBU), a Radio Remote Unit (RRU) and an antenna, wherein the BBU and the RRU can be connected by optical fibers, the RRU is connected to the antenna by a coaxial cable and a power divider (coupler), and generally one BBU can be connected with a plurality of RRUs.

The RRU may include 4 modules: the digital intermediate frequency module, the transceiver module, the power amplifier module and the filter module. The digital intermediate frequency module is used for modulation and demodulation, digital up-down frequency conversion, digital-to-analog conversion and the like of optical transmission; the transceiver module completes the conversion from the intermediate frequency signal to the radio frequency signal; and after the radio frequency signal is amplified by the power amplification module and filtered by the filtering module, the radio frequency signal is transmitted out through an antenna.

The BBU is used to perform baseband processing functions (coding, multiplexing, modulation, spreading, etc.) of a Uu interface (i.e., an interface between a terminal device and a base station), interface functions of a logic interface between a Radio Network Controller (RNC) and the base station, signaling processing, local and remote operation and maintenance functions, and a working state monitoring and alarm information reporting function of a base station system.

If the first access network device provides service for the first cell and the second access network device provides service for the second cell, the interference coordination method provided by the embodiment of the present invention is applicable to the following application scenarios in the communication system shown in fig. 3:

(1) the communication between the first access network device and the edge terminal device of the first cell uses at least two scheduling resource units (such as a scheduling resource unit M and a scheduling resource unit Q), the communication between the second access network device and the edge terminal device of the second cell uses one scheduling resource unit (such as a scheduling resource unit N), and the size of at least one scheduling resource unit of the scheduling resource unit M and the scheduling resource unit Q is different from the size of the scheduling resource unit N.

The edge terminal device of the cell is a terminal device in the cell, the signal intensity of the received signal is smaller than a preset threshold, and the center terminal device of the cell is a terminal device in the cell, the signal intensity of the received signal is greater than or equal to the preset threshold.

It should be noted that, in the embodiment of the present invention, the at least one type of scheduling resource unit refers to that the size of the scheduling resource unit is at least one type.

(2) The communication between the first access network device and the edge terminal device of the first cell uses a scheduling resource unit (such as scheduling resource unit M), the communication between the second access network device and the edge terminal device of the second cell uses a scheduling resource unit (such as scheduling resource unit N), and the size of the scheduling resource unit M is different from that of the scheduling resource unit N.

(3) The communication between the first access network device and the edge terminal device of the first cell uses one kind of scheduling resource unit (such as scheduling resource unit M), the communication between the second access network device and the edge terminal device of the second cell uses at least two kinds of scheduling resource units (such as scheduling resource unit N and scheduling resource unit Y), and the size of at least one of the scheduling resource unit N and the scheduling resource unit Y is different from the size of the scheduling resource unit M.

In any of the above application scenarios, the size of the scheduling resource unit used between the first access network device and the center terminal device of the first cell may be the same as or different from the size of the scheduling resource unit used between the first access network device and the edge terminal device of the first cell. The size of the scheduling resource unit used between the second access network device and the center terminal device of the second cell may be the same as or different from the size of the scheduling resource unit used between the second access network device and the edge terminal device of the second cell.

The scheduling resource unit in the embodiment of the invention is a downlink data scheduling unit or an uplink data scheduling unit when the access network equipment and the terminal equipment are in communication. The scheduling resource unit is a time-frequency unit composed of resources including a certain frequency width and time length.

The scheduling resource unit is a time-frequency unit composed of resources including a certain frequency width and time length. Therefore, in the embodiment of the present invention, the scheduling resource units with different sizes may refer to scheduling resource units with the same frequency width in the frequency domain but different time lengths in the time domain; or may refer to scheduling resource units with the same time length in the time domain but different frequency widths in the frequency domain; or, the scheduling resources may be scheduled in different frequency widths in the frequency domain and different time lengths in the time domain.

The embodiment of the invention aims to solve the problem of avoiding the inter-cell interference caused by different sizes of the scheduling resource units. If there is interference between cells, the communication between the edge terminal device of any cell and the access network device of the cell may be affected by the communication between other access network devices and its edge terminal device, or may affect the communication between other access network devices and their edge terminal device. Therefore, the embodiment of the present invention is mainly directed to communication between an access network device and an edge terminal device that provides services to the access network device.

The embodiment of the present invention is described by taking an example in which a first access network device provides a service for a first cell and a second access network device provides a service for a second cell. Fig. 7 is a flowchart illustrating an interference coordination method according to an embodiment of the present invention, where the interference coordination method may be applied to the communication system shown in fig. 3.

Referring to fig. 7, the interference coordination method includes:

s700, the first access network equipment acquires the coordination information and the reference information.

The coordination information is used for coordinating interference between the second access network device and the first access network device, and the reference information is used for indicating the size of the interference coordination resource unit. The coordination information is determined by the second access network device according to the size of the interference coordination resource unit.

S701, the first access network equipment determines scheduling information of the first access network equipment according to the coordination information and the reference information.

S702, the first access network device communicates with the terminal device of the first cell according to the determined scheduling information.

Optionally, the coordination information in the embodiment of the present invention includes at least one of an uplink OI, an extended uplink OI, an uplink HII, RNTP, an enhanced RNTP, an ABS, a target UL-DL configuration, and CoMP.

In this embodiment of the present invention, the uplink OI may indicate, in a bitmap manner, that the interference overload indication value of the second access network device on each PRB is in a time period from when the second access network device determines the current coordination information to when the second access network device updates the coordination information next time. Illustratively, when the value of the uplink OI is "1", it represents an interference overload; an uplink OI value of "0" indicates that the interference is not overloaded. The uplink OI describes that each PRB used by the second access network device is interfered by other access network devices when the second access network device receives signals.

The extended uplink OI in the embodiment of the present invention indicates an interference overload indication value of the second access network device on each PRB of the relevant uplink subframe in a time period from when the second access network device determines the current coordination information to when the second access network device updates the coordination information next time. If the coordination information includes the extended uplink interference overload indication, the coordination information further includes information of a related uplink subframe.

The uplink HII in the embodiment of the present invention may indicate, in a bitmap manner, a high interference sensitivity indication value of the second access network device on each PRB in a time period from when the second access network device determines the current coordination information to when the second access network device updates the coordination information next time. Illustratively, when the value of the uplink HII is "1", it represents high interference sensitivity; an uplink HII value of "0" represents low interference sensitivity. The uplink HII describes the sensitivity level of the second access network device to be interfered by other access network devices on each PRB used by the second access network device when the second access network device receives signals. If the coordination information acquired by the first access network device includes the uplink HII, the first access network device needs to avoid scheduling data of the edge terminal device served by the first access network device to a PRB with high interference sensitivity.

The RNTP in the embodiment of the present invention may indicate, in a bitmap manner, whether the transmission power on each PRB used by the second access network device is greater than the preset power configured in advance in a time period from when the second access network device determines the current coordination information to when the second access network device updates the coordination information next time.

The enhanced RNTP in the embodiment of the present invention indicates whether the transmission power on each PRB used by the second access network device is greater than a preconfigured threshold on a configuration subframe in a time period from when the second access network device determines the current coordination information to when the second access network device updates the coordination information next time. If the coordination information includes the enhanced RNTP, the coordination information further includes information of a related configuration subframe.

The ABS in the embodiment of the present invention may indicate, in a bitmap manner, a pattern of almost empty subframes in time in a period from when the second access network device determines the current coordination information to before when the second access network device updates the coordination information next time. The ABS describes the distribution of the transmission power of the second access network device in each subframe.

The target UL-DL configuration is a configuration parameter indicating a ratio of UL subframes and DL subframes to be used in a time period from when the second access network device determines current coordination information to when the second access network device updates the coordination information next time.

CoMP is used to indicate CoMP parameters on each scheduling resource unit PRB on a configured subframe in a time period from when the second access network device determines the current coordination information to when the second access network device updates the coordination information next time. If the coordination information includes CoMP, the coordination information further includes information of a related configuration subframe.

The method for the first access network equipment to acquire the coordination information comprises the following steps: the first access network equipment receives coordination information sent by the second access network equipment; or, the first access network device receives coordination information sent by a core network device connected to both the first access network device and the second access network device, where the coordination information is sent by the second access network device to the core network device.

Specifically, when a direct interface exists between the first access network device and the second access network device, the second access network device sends the coordination information to the first access network device. When there is no direct interface between the first access network device and the second access network device, the second access network device sends coordination information to the core network device, and then the core network device sends coordination information to the first access network device, so that the first access network device obtains the coordination information.

Optionally, the coordination information is determined by the second access network device according to the size of the interference coordination resource unit. Specifically, the second access network device determines the size of the resource unit corresponding to the information included in the coordination information according to the size of the interference coordination resource unit. Exemplarily, if the size of the interference coordination resource unit is the time length of the interference coordination resource unit, the coordination information is interference coordination information of each interference coordination resource unit in time; and if the size of the interference coordination resource unit is the frequency width of the interference coordination resource unit, the coordination information is the interference coordination information on the frequency resource of the frequency width of each interference coordination resource unit.

The reference information in the embodiment of the present invention is used to indicate the size of the interference coordination resource unit. The coordination information is determined by the second access network device according to the size of the interference coordination resource unit.

The size of the interference coordination resource unit may be considered from a time domain and/or frequency domain perspective. The size of the interference coordination resource unit refers to at least one of a time length of the interference coordination resource unit and a frequency width of the interference coordination resource unit.

Exemplarily, if the coordination information includes RNTP, the size of the interference coordination resource refers to a frequency width of the interference coordination resource unit. If the coordination information includes the enhanced RNTP, the size of the interference coordination resource unit refers to a time length of the interference coordination resource unit and a frequency width of the interference coordination resource unit. If the coordination information includes ABS, the size of the interference coordination resource refers to a time length of the interference coordination resource unit.

The method for the first access network equipment to acquire the reference information comprises the following steps: the first access network equipment receives reference information sent by the second access network equipment; or, the first access network device receives reference information sent by a core network device connected to both the first access network device and the second access network device; or, the first access network device determines a working frequency band of the second access network device, and obtains the reference information according to the working frequency band of the second access network device and a preset relationship, where the preset relationship includes a corresponding relationship between the working frequency band of the second access network device and the reference information.

The reference information sent by the core network device to the first access network device may be the reference information sent by the second access network device received by the core network device, or may be the reference information determined by the core network device itself.

The core network device is connected with both the first access network device and the second access network device, so that the core network device can acquire scheduling resource units used by the first access network device and the second access network device, determine the size of an interference coordination resource unit used for coordinating interference between the first access network device and the second access network device according to the scheduling units used by the first access network device and the second access network device, and send reference information used for indicating the size of the interference coordination resource unit to the first access network device and/or the second access network device.

Optionally, for the interference coordination resource unit, in any application scenario described above, if the second access network device uses at least one scheduling resource unit, the size of the interference coordination resource unit is the time length of the scheduling resource unit with the shortest time length among the at least one scheduling resource unit used by the second access network device, or the size of the interference coordination resource unit is the frequency width of the scheduling resource unit with the narrowest frequency width among the at least one scheduling resource unit used by the second access network device, or the size of the interference coordination resource unit is the time length and the frequency width of the scheduling resource unit with the smallest number of resource units REs included in the at least one scheduling resource unit used by the second access network device, or the time length of the interference coordination resource unit is equal to the minimum value of the time length among the at least one scheduling resource unit used by the second access network device, and the frequency width is equal to the minimum value of the frequency width in at least one scheduling resource unit used by the second access network device, or the size of the interference coordination resource unit is determined according to the working frequency band of the second access network device and a preset relationship, where the preset relationship includes a corresponding relationship between the working frequency band of the second access network device and the reference information.

For example, if two scheduling resource units are used for communication between the second access network device and the terminal device in the second cell, one is a scheduling resource unit with a frequency domain resource size of B1 and a time domain resource size of T1, and the other is a scheduling resource unit with a frequency domain resource size of B2 and a time domain resource size of T2, the time length of the interference coordination resource unit is min (T1, T2), or the frequency width of the interference coordination resource unit is min (B1, B2), or the time length of the interference coordination resource unit is min (T1, T2) and the frequency width is min (B1, B2).

Illustratively, the second access network device uses a scheduled resource unit 1 with a frequency domain of 15KHz and a time domain of 0.5ms and a scheduled resource unit 2 with a frequency domain of 30KHz and a time domain of 0.1 ms. If the coordination information indicates that interference exists between the second access network device and the first access network device in the time domain, the time length of the interference coordination resource unit is the time length of the scheduling resource unit 2; if the coordination information indicates that interference exists between the second access network device and the first access network device in the frequency domain, the frequency width of the interference coordination resource unit is the frequency width of the scheduling resource unit 1; if the coordination information indicates that interference exists between the second access network device and the first access network device on a certain time-frequency resource, the size of the interference coordination resource unit is the size of the scheduling resource unit with the minimum number of resource units (REs) included in the two scheduling resource units.

Optionally, for the interference coordination resource unit, in any application scenario described above, if the first access network device uses at least one scheduling resource unit, the size of the interference coordination resource unit is the time length of the scheduling resource unit with the shortest time length among the at least one scheduling resource unit used by the first access network device, or the size of the interference coordination resource unit is the frequency width of the scheduling resource unit with the narrowest frequency width among the at least one scheduling resource unit used by the first access network device, or the size of the interference coordination resource unit is the time length and the frequency width of the scheduling resource unit with the smallest number of resource units REs included in the at least one scheduling resource unit used by the first access network device, or the time length of the interference coordination resource unit is equal to the minimum value of the time length among the at least one scheduling resource unit used by the first access network device, and the frequency width is equal to the minimum value of the frequency width in the at least one scheduling resource unit used by the first access network equipment.

For example, if two scheduling resource units are used for communication between the first access network device and the terminal device of the first cell, one is a scheduling resource unit with a frequency domain resource size of B3 and a time domain resource size of T3, and the other is a scheduling resource unit with a frequency domain resource size of B4 and a time domain resource size of T4, the time length of the interference coordination resource unit is min (T3, T4), or the frequency width of the interference coordination resource unit is min (B3, B4), or the time length of the interference coordination resource unit is min (T3, T4) and the frequency width is min (B3, B4).

Optionally, if the first access network device uses at least one scheduling resource unit, the second access network device uses at least one scheduling resource unit, and the at least one scheduling resource unit used by the first access network device and the at least one scheduling resource unit used by the second access network device form a scheduling resource unit set, the size of the interference coordination resource unit is the time length of the scheduling resource unit with the shortest time length in the scheduling resource unit set, or the size of the interference coordination resource unit is the frequency width of the scheduling resource unit with the narrowest frequency width in the scheduling resource unit set, or the size of the interference coordination resource unit is the time length and the frequency width of the scheduling resource unit with the smallest number of resource units REs in the scheduling resource unit set, or the time length of the interference coordination resource unit is equal to the minimum time length in the scheduling resource unit set, and the frequency width is equal to the minimum of the frequency widths in the set of scheduled resource units.

For example, if the communication between the first access network device and the terminal device in the first cell uses two scheduling resource units, one is a scheduling resource unit with a frequency domain resource size of X1 and a time domain resource size of Y1, and the other is a scheduling resource unit with a frequency domain resource size of X2 and a time domain resource size of Y2. The communication between the second access network device and the terminal device in the second cell uses two scheduling resource units, one is a scheduling resource unit with a frequency domain resource size of X3 and a time domain resource size of Y3, and the other is a scheduling resource unit with a frequency domain resource size of X4 and a time domain resource size of Y4, so that the time length of the interference coordination resource unit is min (X1, X2, X3, and X4), or the frequency width of the interference coordination resource unit is min (Y1, Y2, Y3, and Y4), or the time length of the interference coordination resource unit is min (X1, X2, X3, and X4), and the frequency width is min (Y1, Y2, Y3, and Y4).

It can be seen that, no matter how many scheduling resource units used by the first access network device and how many scheduling resource units used by the second access network device are, the size of the interference coordination resource unit may correspond to the size of the scheduling resource unit with the smallest time length and/or the narrowest frequency width among the scheduling resource units used by the first access network device, or the size of the interference coordination resource unit may correspond to the size of the scheduling resource unit with the smallest time length and/or the narrowest frequency width among the scheduling resource units used by the second access network device, or the size of the interference coordination resource unit may correspond to the size of the scheduling resource unit with the smallest time length and/or the narrowest frequency width among the set of scheduling resource units. Therefore, the interference situation of the second access network equipment to other access network equipment can be represented in the finest mode, or the interference situation of the second access network equipment to other access network equipment is represented.

In combination with the above description, the size of the plurality of scrambling resource units corresponds to the size of the scheduling resource unit with the smallest time length and/or the narrowest frequency width in the scheduling resource units used by the second access network device, and then the coordination information may include load information of the second access network device. The load information of the second access network device is used for indicating the change situation of the transmission power of the second access network device. In this case, the size of the interference coordination resource unit corresponds to the size of the scheduling resource unit with the smallest time length and/or the smallest frequency width in the scheduling resource units used by the second access network device, so that the first access network device can accurately determine the interference caused by the second access network device.

Optionally, the load information of the second access network device may indicate that the transmission power of the second access network device is higher than or lower than a certain preset power, may also indicate a change condition of the transmission power of the second access network device with time change, and may also indicate a change condition of the transmission power of the second access network device with time-frequency change.

Because the load information of the second access network device is used to indicate the change situation of the transmission power of the second access network device, the coordination information containing the load information of the second access network device can accurately describe the possible interference situation of the second access network device on the first access network device. In this way, after the first access network device receives the coordination information, when scheduling data of the terminal device served by the first access network device, it may avoid interference of the cell served by the second access network device with the cell served by the first access network device. Here, the first access network device scheduling the data of the terminal device that the first access network device provides the service refers to that the first access network device transmits or receives the data of the terminal device that the first access network device provides the service.

The load information of the second access network device in the embodiment of the present invention includes at least one of an RNTP of the second access network device, an enhanced RNTP of the second access network device, an eIMTA configuration of the second access network device, an ABS of the second access network device, a TDD configuration of the second access network device, and a CoMP configuration of the second access network device.

In combination with the above description, the size of the interference coordination resource units corresponds to the size of the scheduling resource unit with the smallest time length and/or the narrowest frequency width in the scheduling resource units used by the first access network device, and then the coordination information may include first information for indicating that the second access network device is interfered.

Optionally, the first information may be used for distribution of interference suffered by the second access network device in time, may also be used for indicating distribution of interference suffered by the second access network device in frequency, and may also be used for indicating distribution of interference suffered by the second access network device in time and frequency.

Optionally, the first information includes at least one of an HII of the second access network device, an OI of the second access network device, and an extended uplink interference overload indication of the second access network device.

Referring to fig. 3, the first access network device and the second access network device are connected through an X2 interface, and both the first access network device and the second access network device are connected with the core network device through an S1 interface. Therefore, in S700, the first access network device may obtain at least one of the coordination information and the reference information from the second access network device through the X2 interface, may also obtain at least one of the coordination information and the reference information from the core network device through the S1 interface, and may also obtain the coordination information from the second access network device or the core network device, and after the first access network device determines the operating frequency band of the second access network device, obtain the reference information according to the operating frequency band of the second access network device and a preset relationship (a preset relationship between the operating frequency band and the reference information for indicating the size of the interference coordination resource unit), which is not specifically limited in this embodiment of the present invention.

The preset relationship in the embodiment of the present invention refers to a corresponding relationship between the operating frequency band and the reference information. For example, the size of the interference coordination resource unit corresponding to the operating frequency band a1 is G1, the size of the interference coordination resource unit corresponding to the operating frequency band a2 is G2, … …, and the size of the interference coordination resource unit corresponding to the operating frequency band An is Gn. After the first access network device determines the operating frequency band of the second access network device, the first access network device may determine the reference information according to the preset relationship and the determined operating frequency band of the second access network device.

Optionally, the preset relationship between the operating frequency band and the reference information is applicable to all access network devices. The first access network device can determine the reference information corresponding to the working frequency band of the second access network device according to the preset relationship only by determining the working frequency band of the second access network device.

Optionally, the coordination information acquired by the first access network device includes information of a working frequency band of the second access network device, and the first access network device may determine the working frequency band of the second access network device according to the acquired coordination information, or may determine the working frequency band of the second access network device in other manners.

Specifically, after the first access network device acquires the coordination information and the reference information, the first access network device determines the scheduling information of the first access network device according to the coordination information and the reference information acquired by the first access network device, that is, S701 is executed.

Illustratively, the first access network device is eNB-1, eNB-1 serves cell 1, and a scheduling resource unit used by eNB-1 to communicate with a terminal device of cell 1 includes 12 subcarriers in a frequency domain, a width of each subcarrier is 15KHz, and a time length of the scheduling resource unit in a time domain is 1 ms. The second access network device is eNB-2, eNB-2 serves cell 2, the scheduling resource unit used by eNB-2 for communicating with the terminal device of cell 2 includes 12 subcarriers in the frequency domain, the width of each subcarrier is 60KHz, and the time length of the scheduling resource unit in the time domain is 0.25 ms. If the operating bandwidth of the eNB-2 is 20MHz (megahertz), the coordination information includes RNTP of the eNB-2, and the coordination information is determined according to the frequency width of the interference coordination resource unit being 60 KHz. The eNB-2 transmits the coordination information (RNTP of eNB-2) and the reference information (frequency width of interference coordination resource unit is 60KHz) to the eNB-1 through an X2 interface. After the eNB-1 acquires the coordination information and the reference information, the transmission power of the eNB-2 on the frequency resource with the unit of 60KHz before next RNTP update can be accurately judged, so that the eNB-1 can determine scheduling information used by the eNB-1 for communicating with the edge terminal equipment of the cell 1, and the eNB-1 can communicate with the edge terminal equipment of the cell 1 to avoid the interference of the eNB-2.

Correspondingly, after the first access network device determines the scheduling information of the first access network device, the first access network device communicates with the terminal device of the first cell according to the determined scheduling information, that is, S702 is executed. Specifically, the first access network device communicates with the edge terminal device of the first cell according to the determined scheduling information.

In addition, before determining the scheduling information, the first access network device in the embodiment of the present invention may further obtain interference coordination priority information corresponding to the coordination information. In this way, the first access network device may determine the scheduling information according to the coordination information, the reference information, and the interference coordination priority information.

The method for the first access network device to obtain the interference coordination priority information is similar to the method for the first access network device to obtain the coordination information. Optionally, the first access network device receives interference coordination priority information sent by the second access network device; or, the first access network device receives the interference coordination priority information sent by the core network device.

As can be seen from the above description, the first access network device may obtain at least one of the coordination information and the reference information from the second access network device through the X2 interface, and may also obtain at least one of the coordination information and the reference information from the core network device through the S1 interface. Therefore, the method for the first access network device to obtain the coordination information and the reference information may be:

the first access network equipment and the second access network equipment send coordination information to the first access network equipment and send reference information to the first access network equipment.

Second, the second access network equipment sends coordination information to the core network equipment and sends reference information to the core network equipment; after receiving the coordination information, the core network equipment sends the coordination information to the first access network equipment; and after receiving the reference information, the core network equipment sends the reference information to the first access network equipment.

Thirdly, the second access network equipment sends one of the coordination information and the reference information to the first access network equipment and sends the other one of the coordination information and the reference information to the core network equipment; and after receiving the other one of the coordination information and the reference information, the core network equipment sends the other one of the coordination information and the reference information to the first access network equipment.

Fourthly, the second access network equipment or the core network equipment sends coordination information to the first access network equipment; the first access network equipment determines the working frequency band of the second access network equipment, and determines the reference information according to the working frequency band of the second access network equipment and a preset relationship, wherein the preset relationship comprises a corresponding relationship between the working frequency band of the second access network equipment and the reference information.

Fifthly, the core network equipment determines reference information; the core network equipment respectively sends the determined reference information to the first access network equipment and the second access network equipment; and the second access network equipment determines the coordination information according to the reference information sent by the core network equipment and sends the coordination information to the first access network equipment.

Referring to fig. 8 in conjunction with fig. 7, S700 may be replaced with S800 to S801 in the first method.

And S800, the second access network equipment determines the coordination information and the reference information.

S801, the second access network device sends a first message of the coordination information to the first access network device, and sends a second message of the reference information.

The first message and the second message may be the same message or different messages.

In conjunction with fig. 7, as shown in fig. 9, S700 may be replaced with S900 to S902 for the second method.

And S900, the second access network equipment determines the coordination information and the reference information.

S901, the second access network device sends coordination information to the core network device and sends reference information.

S902, the core network device sends the coordination information and the reference information to the first access network device.

The core network device may send the coordination information and the reference information to the first access network device at the same time; or the coordination information can be sent first, and then the reference information can be sent; the reference information may also be sent first, and then the coordination information is sent, which is not specifically limited in this embodiment of the present invention.

Referring to fig. 10 in conjunction with fig. 7, S700 may be replaced with S100 to S102 for the third method.

S100, the second access network equipment determines the coordination information and the reference information.

S101, the second access network equipment sends one of the coordination information and the reference information to the first access network equipment, and sends the other one of the coordination information and the reference information to the core network equipment.

S102, the core network equipment sends the other one of the coordination information and the reference information to the first access network equipment.

In conjunction with fig. 7, as shown in fig. 11, for the fourth method, S700 may be replaced with S110 to S112.

And S110, the second access network equipment or the core network equipment sends coordination information to the first access network equipment.

As can be seen from the above description, the second access network device determines the coordination information, so that the second access network device may directly send the coordination information to the first access network device, or send the coordination information to the core network device, so that the core network device can send the coordination information to the first access network device.

And S111, the first access network equipment determines the working frequency band of the second access network equipment.

And S112, the first access network equipment determines the reference information according to the working frequency band of the second access network equipment and the preset relation.

With reference to fig. 7, as shown in fig. 12, for the fifth method, S700 may be replaced with S120-S12

And S120, the core network equipment determines the reference information.

S121, the core network device sends the reference information to the first access network device and the second access network device respectively.

And S122, the second access network equipment determines the coordination information according to the received reference information.

And S123, the second access network equipment sends coordination information to the first access network equipment.

An embodiment of the present invention provides an access network device, where the access network device is configured to perform the steps performed by the first access network device or the second access network device in the above interference coordination method. The access network device provided by the embodiment of the invention can comprise modules corresponding to the corresponding steps.

The embodiment of the present invention may perform functional module division on the access network device according to the above method example, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The division of the modules in the embodiment of the present invention is illustrative, and is only a logic function division, and there may be another division manner in actual implementation.

Fig. 13 shows a possible structure diagram of the access network device in the above embodiment, in the case of dividing each functional module by corresponding functions. As shown in fig. 13, the access network device includes an obtaining unit 120, a processing unit 121, and a sending unit 122. The obtaining unit 120 is configured to instruct the access network device to perform S700 in fig. 7. The processing unit 121 is configured to support the access network device to execute S701 and S702 in fig. 7. The sending unit 122 is configured to support the access network device to perform S801 in fig. 8, S901 in fig. 9, S101 in fig. 10, and S110 in fig. 11. All relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again. The access network device may further include a storage unit 123, where the storage unit 123 is configured to store the coordination information and the reference information, and may also be configured to store a software program and an application module.

In case of using integrated units, fig. 14 shows a possible schematic structure of the access network device involved in the above embodiments. As shown in fig. 14, the access network device includes: a processing module 130 and a communication module 131. The processing module 130 is used for controlling and managing the actions of the access network device, for example, the processing module 130 is used for supporting the access network device to execute S701 and S702 in fig. 7, and/or other processes for the technology described herein. The communication module 131 is configured to support the access network device to communicate with other devices, for example, the communication module 131 is configured to support the access network device to perform S700 in fig. 7, S801 in fig. 8, S901 in fig. 9, S101 in fig. 10, and S110 in fig. 11. The access network device may also include a storage module 132 for storing coordination information and reference information, and may also be used to store program codes and data for the access network device.

The processing module 130 may be a Processor or a controller, and may be, for example, a Central Processing Unit (CPU) or a Digital Signal Processor (DSP). Which may implement or execute the various illustrative logical blocks, modules, and circuits described in connection with the embodiment disclosure. The communication module 131 may be a communication interface, a transceiving circuit or a transceiver, etc. The storage module 132 may be a memory.

When the processing module 130 is a processor, the communication module 131 is a communication interface, and the storage module 132 is a memory, the access network device according to the embodiment of the present invention may be the access network device shown in fig. 14.

As shown in fig. 15, the access network device includes: a communication interface 140, a processor 141, and a memory 142. The communication interface 140, the processor 141, and the memory 142 are connected via a system bus 143, and perform mutual communication.

When the access network equipment operates, the access network equipment executes an interference coordination method as shown in any one of fig. 7-11. For a specific interference coordination method of the access network device, reference may be made to the related description in the embodiment shown in any one of fig. 7 to fig. 11, which is not described herein again.

Among other things, the communication interface 140 is used to communicate with other devices, etc.

The memory 142 is used for storing the coordination information and the reference information, and may also be used for storing a software program and an application module, and the processor 141 executes various functional applications and data processing of the access network device by running the software program and the application module stored in the memory 142.

The memory 142 may mainly include a storage program area 1420 and a storage data area 1421, wherein the storage program area 1420 may store an operating system, an application program required for at least one function, such as transmitting coordination information, and the like; the storage data area 1421 may store coordination information as well as reference information.

The Memory 142 may be a Read-Only Memory (ROM), or other types of static storage devices that can store static information and instructions, a Random Access Memory (RAM), or other types of dynamic storage devices that can store information and instructions, or an Electrically Erasable Programmable Read-Only Memory (EEPROM), a magnetic disk storage medium, or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by the Access network device, but is not limited thereto.

The memory 142, which may be separate, is coupled to the processor 141 by a system bus 143. Memory 142 may also be integrated with processor 141.

Processor 141 is the control center for the access network equipment. The processor 141 connects various portions of the entire access network device using various interfaces and lines, performs various functions of the access network device and processes data by running or executing software programs and/or application modules stored in the memory 142 and calling up the data stored in the memory 142, thereby performing overall monitoring of the access network device.

In particular implementations, processor 141 may include one or more CPUs, for example, processor 141 in fig. 15 includes CPU 0 and CPU 1, as an embodiment.

The system bus 143 may be divided into an address bus, a data bus, a control bus, and the like. For clarity of illustration in the embodiments of the present invention, various buses are illustrated in FIG. 15 as system bus 143.

Accordingly, embodiments of the present invention also provide a computer-readable storage medium including one or more program codes; when the processor of the access network device executes the program code, the access network device executes an interference coordination method as shown in any one of fig. 7-11.

The embodiment of the invention provides access network equipment, which is first access network equipment. The first access network device can acquire reference information for indicating the size of the interference coordination resource unit and also can acquire coordination information for indicating the interference between the second access network device and the first access network device, wherein the coordination information is determined according to the size of the interference coordination resource unit. The first access network device can acquire the degree of interference between the first access network device and the second access network device according to the reference information and the coordination information. Therefore, even if the size of the scheduling resource unit used by the first access network device is different from the size of the scheduling resource unit used by the second access network device, the first access network device can accurately determine the scheduling information used by the communication between the first access network device and the terminal device according to the reference information and the coordination information, so that the problem that the cell served by the first access network device and the cell served by the second access network device are interfered is solved, and the purpose of interference control is realized.

The embodiment of the invention provides core network equipment, which is used for executing the steps executed by the core network equipment in the interference coordination method. The core network device provided by the embodiment of the invention can comprise modules corresponding to the corresponding steps.

The embodiment of the present invention may perform functional module division on the core network device according to the above method example, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated in one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The division of the modules in the embodiment of the present invention is illustrative, and is only a logic function division, and there may be another division manner in actual implementation.

In the case of dividing each functional module by corresponding functions, fig. 16 shows a possible structural diagram of the core network device according to the foregoing embodiment. As shown in fig. 16, the core network device includes an obtaining unit 150 and a sending unit 151. The obtaining unit 150 is configured to instruct the core network device to execute S901 in fig. 9 and S101 in fig. 10. The sending unit 151 is configured to support the core network device to execute S902 in fig. 9, S102 in fig. 10, and S110 in fig. 11. All relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again. The core network device may further include a storage unit 152 and a processing unit 153, where the storage unit 152 is used to store software programs and application modules.

In the case of an integrated unit, fig. 17 shows a schematic diagram of a possible structure of the core network device involved in the above embodiment. As shown in fig. 17, the core network device includes: a processing module 160 and a communication module 161. The processing module 160 is configured to control and manage the actions of the core network device, for example, the processing module 160 is configured to support the core network device to forward the reference information or the coordination information to the first access network device after receiving the reference information or the coordination information, and/or other processes for the technology described in this application. The communication module 161 is configured to support the core network device to communicate with other devices, for example, the communication module 161 is configured to support the core network device to perform S901 and S902 in fig. 9, S101 and S102 in fig. 10, and S110 in fig. 11. The core network device may further comprise a storage module 162 for storing program codes and data of the core network device.

The processing module 160 may be a processor or a controller, and may be a CPU, a DSP, for example. Which may implement or execute the various illustrative logical blocks, modules, and circuits described in connection with the embodiment disclosure. The communication module 161 may be a communication interface, a transceiver circuit or a transceiver, etc. The storage module 162 may be a memory.

When the processing module 160 is a processor, the communication module 161 is a communication interface, and the storage module 162 is a memory, the core network device according to the embodiment of the present invention may be the core network device shown in fig. 18.

As shown in fig. 18, the core network device includes: a communication interface 170, a processor 171, and a memory 172. The communication interface 170, the processor 171, and the memory 172 are connected by a system bus 173, and perform mutual communication.

When the core network device operates, the core network device performs an interference coordination method as shown in any one of fig. 7 to 11. For a specific interference coordination method of the core network device, reference may be made to the related description in the embodiment shown in any one of fig. 7 to 11, which is not described herein again.

Among other things, the communication interface 170 is used to communicate with other devices, etc.

The memory 172 is used to store software programs and application modules, and the processor 171 executes various functional applications and data processing of the core network device by running the software programs and application modules stored in the memory 172.

The memory 172 may mainly include a program storage area 1720 and a data storage area 1721, wherein the program storage area 1720 may store an operating system, an application program required for at least one function, such as forwarding coordination information, and the like; the storage data area 1721 may store information of the first access network device and information of the second access network device.

Memory 172 may be, but is not limited to, ROM, or other types of static storage devices that can store static information and instructions, RAM or other types of dynamic storage devices that can store information and instructions, EEPROM, magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a core network device.

The memory 172 may be separate and coupled to the processor 171 via a system bus 173. The memory 172 may also be integrated with the processor 171.

The processor 171 is a control center of the core network device. The processor 171 connects various parts of the entire core network device using various interfaces and lines, and performs various functions of the core network device and processes data by running or executing software programs and/or application modules stored in the memory 172 and calling data stored in the memory 172, thereby performing overall monitoring of the core network device.

In particular implementations, processor 171 may include one or more CPUs, for example, processor 171 in fig. 18 includes CPU 0 and CPU 1.

The system bus 173 may be divided into an address bus, a data bus, a control bus, and the like. For clarity of illustration in the embodiments of the present invention, the various buses are illustrated in FIG. 18 as system bus 173.

Accordingly, embodiments of the present invention also provide a computer-readable storage medium including one or more program codes; when the processor of the core network device executes the program code, the core network device executes the interference coordination method as shown in any one of fig. 7-11.

The embodiment of the invention provides core network equipment, which is connected with first access network equipment and second access network equipment. The first access network device can acquire reference information for indicating the size of the interference coordination resource unit and also can acquire coordination information for indicating the interference between the second access network device and the first access network device, wherein the coordination information is determined according to the size of the interference coordination resource unit. The first access network device can acquire the degree of interference between the first access network device and the second access network device according to the reference information and the coordination information. Therefore, even if the size of the scheduling resource unit used by the first access network device is different from the size of the scheduling resource unit used by the second access network device, the first access network device can accurately determine the scheduling information used by the communication between the first access network device and the terminal device according to the reference information and the coordination information, so that the problem that the cell served by the first access network device and the cell served by the second access network device are interfered is solved, and the purpose of interference control is realized.

Through the above description of the embodiments, it is clear to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely used as an example, and in practical applications, the above function distribution may be completed by different functional modules according to needs, that is, the internal structure of the device may be divided into different functional modules to complete all or part of the above described functions. For the specific working processes of the system, the apparatus and the unit described above, reference may be made to the corresponding processes in the foregoing method embodiments, and details are not described here again.

In the embodiments provided in the present invention, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) or a processor to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: flash memory, removable hard drive, read only memory, random access memory, magnetic or optical disk, and the like.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An interference coordination method, comprising:

a first access network device acquires coordination information and reference information, wherein the coordination information is used for coordinating interference between the first access network device and a second access network device, the reference information is used for indicating the size of an interference coordination resource unit, and the coordination information is determined according to the size of the interference coordination resource unit;

the first access network equipment determines scheduling information of the first access network equipment according to the coordination information and the reference information;

the first access network equipment communicates with the terminal equipment according to the scheduling information;

wherein, the obtaining of the reference information by the first access network device includes:

the first access network device determines a working frequency band of the second access network device, and acquires the reference information according to the working frequency band of the second access network device and a preset relationship, wherein the preset relationship comprises a corresponding relationship between the working frequency band of the second access network device and the reference information.

2. The interference coordination method according to claim 1,

the size of the interference coordination resource unit is at least one of a time length of the interference coordination resource unit and a frequency width of the interference coordination resource unit.

3. The interference coordination method according to claim 1 or 2, wherein the obtaining of the coordination information by the first access network device comprises:

the first access network equipment receives the coordination information sent by the second access network equipment;

alternatively, the first and second electrodes may be,

and the first access network equipment receives the coordination information sent by core network equipment, and the core network equipment is connected with both the first access network equipment and the second access network equipment.

4. The interference coordination method according to claim 1 or 2,

the second access network device uses at least one scheduling resource unit, where the size of the interference coordination resource unit is the time length of a scheduling resource unit with the shortest time length among the at least one scheduling resource unit, or the size of the interference coordination resource unit is the frequency width of a scheduling resource unit with the narrowest frequency width among the at least one scheduling resource unit, or the size of the interference coordination resource unit is the time length and the frequency width of a scheduling resource unit with the smallest number of resource units REs included in the at least one scheduling resource unit.

5. An interference coordination method, comprising:

the method comprises the steps that a second access network device determines coordination information and reference information, wherein the coordination information is used for coordinating interference between the second access network device and a first access network device, the reference information is used for indicating the size of an interference coordination resource unit, and the coordination information is determined according to the size of the interference coordination resource unit; the reference message is obtained according to the working frequency band of the second access network device and a preset relationship, wherein the preset relationship comprises a corresponding relationship between the working frequency band of the second access network device and the reference message;

the second access network equipment sends the coordination information and the reference information;

wherein the sending, by the second access network device, the coordination information and the reference information includes:

the second access network equipment sends the coordination information to the first access network equipment and sends the reference information to the first access network equipment;

alternatively, the first and second electrodes may be,

the second access network equipment sends the coordination information to core network equipment and sends the reference information to the core network equipment;

alternatively, the first and second electrodes may be,

the second access network device sends one of the coordination information and the reference information to the first access network device, and sends the other one of the coordination information and the reference information to the core network device;

the core network device is connected with both the first access network device and the second access network device.

6. The interference coordination method according to claim 5,

7. The interference coordination method according to claim 5 or 6,

the second access network equipment uses at least one scheduling resource unit, the size of the interference coordination resource unit is the time length of the scheduling resource unit with the shortest time length in the at least one scheduling resource unit, or the size of the interference coordination resource unit is the frequency width of the scheduling resource unit with the narrowest frequency width in the at least one scheduling resource unit, or the size of the interference coordination resource unit is the time length and the frequency width of the scheduling resource unit with the smallest number of resource units (REs) included in the at least one scheduling resource unit, or, the size of the interference coordination resource unit is determined according to the operating frequency band of the second access network device and a preset relationship, the preset relationship comprises a corresponding relationship between the operating frequency band of the second access network device and the reference information.

8. An interference coordination method, comprising:

the method comprises the steps that core network equipment acquires communication information, wherein the communication information comprises at least one item of coordination information and reference information, the coordination information is used for coordinating interference between first access network equipment and second access network equipment, the reference information is used for indicating the size of an interference coordination resource unit, the coordination information is determined according to the size of the interference coordination resource unit, and the core network equipment is connected with the first access network equipment and the second access network equipment;

and the core network equipment sends the communication information to the first access network equipment.

9. The interference coordination method according to claim 8, wherein the core network device acquires communication information, and includes:

and the core network equipment receives the communication information sent by the second access network equipment.

10. An access network device, wherein the access network device is a first access network device, and wherein the access network device comprises:

an obtaining unit, configured to obtain coordination information and reference information, where the coordination information is used to coordinate interference between the first access network device and the second access network device, the reference information is used to indicate a size of an interference coordination resource unit, and the coordination information is determined according to the size of the interference coordination resource unit;

a processing unit, configured to determine scheduling information of the first access network device according to the coordination information and the reference information acquired by the acquisition unit, and to communicate with a terminal device according to the scheduling information;

the processing unit is further configured to determine an operating frequency band of the second access network device;

the obtaining unit is specifically configured to obtain the reference information according to a working frequency band of the second access network device and a preset relationship, where the preset relationship includes a corresponding relationship between the working frequency band of the second access network device and the reference information.

11. The access network device of claim 10,

12. The access network device according to claim 10 or 11, wherein the obtaining unit is specifically configured to:

receiving the coordination information sent by the second access network equipment;

alternatively, the first and second electrodes may be,

and receiving the coordination information sent by core network equipment, wherein the core network equipment is connected with both the first access network equipment and the second access network equipment.

13. The access network device according to claim 10 or 11,

14. An access network device, wherein the access network device is a second access network device, and wherein the access network device comprises:

a processing unit, configured to determine coordination information and reference information, where the coordination information is used to coordinate interference between the second access network device and the first access network device, the reference information is used to indicate a size of an interference coordination resource unit, and the coordination information is determined according to the size of the interference coordination resource unit; the reference message is obtained according to the working frequency band of the second access network device and a preset relationship, wherein the preset relationship comprises a corresponding relationship between the working frequency band of the second access network device and the reference message;

a transmitting unit, configured to transmit the coordination information and the reference information determined by the processing unit;

the sending unit is specifically configured to:

sending the coordination information to the first access network equipment, and sending the reference information to the first access network equipment;

alternatively, the first and second electrodes may be,

sending the coordination information to core network equipment, and sending the reference information to the core network equipment;

alternatively, the first and second electrodes may be,

sending one of the coordination information and the reference information to the first access network device, and sending the other of the coordination information and the reference information to the core network device;

15. The access network device of claim 14,

16. The access network device of claim 14 or 15,

the second access network device uses at least one scheduling resource unit, where the size of the interference coordination resource unit is the time length of a scheduling resource unit with the shortest time length among the at least one scheduling resource unit, or the interference coordination resource unit is the frequency width of a scheduling resource unit with the narrowest frequency width among the at least one scheduling resource unit, or the interference coordination resource unit is the time length and the frequency width of a scheduling resource unit with the smallest number of resource units REs included in the at least one scheduling resource unit, or the size of the interference coordination resource unit is determined according to a working frequency band of the second access network device and a preset relationship, where the preset relationship includes a corresponding relationship between a working frequency band of the second access network device and the reference information.

17. A core network device, comprising:

an obtaining unit, configured to obtain communication information, where the communication information includes at least one of coordination information and reference information, the coordination information is used to coordinate interference between first access network equipment and second access network equipment, the reference information is used to indicate a size of an interference coordination resource unit, the coordination information is determined according to the size of the interference coordination resource unit, and the core network equipment is connected to both the first access network equipment and the second access network equipment;

and a sending unit, configured to send the communication information obtained by the obtaining unit to the first access network device.

18. Core network device according to claim 17,

the obtaining unit is specifically configured to receive the communication information sent by the second access network device.

19. An access network device, wherein the access network device is a first access network device or a second access network device, and the access network device comprises a communication interface, a processor and a memory; the communication interface, the processor and the memory are connected through a system bus; the memory is configured to store computer instructions and the processor is configured to execute the computer instructions stored by the memory to cause the access network device to perform the interference coordination method according to any one of claims 1 to 4 or to perform the interference coordination method according to any one of claims 5 to 7.

20. A core network device comprising a communication interface, a processor and a memory; the communication interface, the processor and the memory are connected through a system bus; the memory is configured to store computer instructions and the processor is configured to execute the computer instructions stored in the memory to cause the core network device to perform the interference coordination method according to claim 8 or 9.