WO2020094113A1

WO2020094113A1 - Spectrum sharing method and device under different standards, and storage medium

Info

Publication number: WO2020094113A1
Application number: PCT/CN2019/116477
Authority: WO
Inventors: 张浩宇
Original assignee: 中兴通讯股份有限公司
Priority date: 2018-11-08
Filing date: 2019-11-08
Publication date: 2020-05-14
Also published as: CN111163474B; CN111163474A

Abstract

Disclosed are a spectrum sharing method and device under different standards, and a storage medium. The method is executed in a first-standard base station, and comprises: detecting a frequency point occupation state of the first-standard base station at the current service time slot; and sending the frequency point occupation state of the first-standard base station at the current service time slot to a second-standard base station. The method is executed in the second-standard base station, and comprises: receiving the frequency point occupation state of the first-standard base station at the current service time slot sent by the first-standard base station; and executing filtering on the frequency points occupied by the first-standard base station at the current service time slot according to the frequency point occupation state of the first-standard base station at the current service time slot.

Description

Spectrum sharing method, equipment and storage medium under different standards

This disclosure claims the priority of the Chinese patent application CN201811326602.0 filed on November 08, 2018, entitled "A method, device and storage medium for spectrum sharing under different standards", the entire contents of which are incorporated herein by reference .

Technical field

The present disclosure relates to the field of communication technologies, and in particular, to a spectrum sharing method, device, and storage medium under different standards.

Background technique

UMTS (Universal Mobile Telecommunications System) 900MHz and 850MHz have the characteristics of wide coverage and strong spreading ability, and can also work with GSM (Global System for Mobile Communication) site and LTE (Long LongTerm Evolution) , Long-term evolution) site reuse deployment. Many operators regard UMTS 900MHz and 850MHz as a future deployment focus.

At present, although GSM users are gradually declining, they will exist for a long time, there will be more and more LTE users, and there is a shortage of spectrum resources in the LTE frequency band. Therefore, solving the problem of mutual interference when co-deployment of different standards has become an urgent problem in the art, for example, solving the problem of UMTS NodeB downlink interference to GSM or LTE. It would be very valuable if the minimum spectrum bandwidth deployed by sites of different standards could be reduced to 5MHz.

Summary of the invention

The main purpose of the present disclosure is to provide a spectrum sharing method, device and storage medium under different systems to solve the problem of mutual interference when different systems are deployed together.

In response to the above technical problems, the present disclosure is solved by the following technical solutions:

The present disclosure provides a spectrum sharing method under different standards. The steps performed by the base station of the first standard include: detecting the occupancy status of the base station of the first standard in the current service time slot; placing the base station of the first standard in the current The frequency occupancy status of the service time slot is sent to the second-standard base station; wherein, the first-standard base station and the second-standard base station are co-deployed base stations, and the second-standard base station is currently based on the first-standard base station. In the frequency occupation state of the service time slot, in the current service time slot, filtering processing is performed on the frequency point occupied by the base station of the first standard.

The present disclosure provides a spectrum sharing method under different standards. The steps performed by the second-standard base station side include: receiving the frequency-occupancy status of the first-standard base station at the current service time slot sent by the first-standard base station; wherein , The base station of the first standard and the base station of the second standard are co-deployed base stations; according to the occupancy state of the base station of the first standard in the current service time slot, in the current service time slot, the The frequency points occupied by a standard base station perform filtering processing.

The present disclosure provides a spectrum sharing device under different standards. The spectrum sharing device under different standards includes: a memory, a processor, and a computer program stored on the memory and executable on the processor, When the computer program is executed by the processor, the steps of the above-mentioned spectrum sharing method under different systems performed on the base station side of the first system, or the above-mentioned spectrum sharing method under different systems performed on the base station side of the second system step.

The present disclosure provides a storage medium that stores spectrum sharing programs under different standards. When the spectrum sharing programs under different standards are executed by a processor, the above-mentioned different standards executed on the base station side of the first standard are implemented. The steps of the spectrum sharing method under the following, or the steps of implementing the above-mentioned spectrum sharing method under the different standards performed on the base station side of the second standard.

The beneficial effects of the present disclosure are as follows: In the case where the first-standard base station and the second-standard base station are deployed together, the present disclosure may, according to the occupancy of the first-standard base station on the frequency point, on the second-standard base station side, the first-standard base station Filtering the occupied frequency points can effectively solve the problem of mutual interference when different standards are deployed together.

BRIEF DESCRIPTION

The drawings described herein are used to provide a further understanding of the present disclosure and constitute a part of the present disclosure. The exemplary embodiments and descriptions of the present disclosure are used to explain the present disclosure and do not constitute an undue limitation on the present disclosure. In the drawings:

1 is a flowchart of a spectrum sharing method under different standards performed on a base station side of a first standard according to the first embodiment of the present disclosure;

2 is a flowchart of a spectrum sharing method under different standards performed on a base station side of a first standard according to a second embodiment of the present disclosure;

3 is a schematic diagram of a spectrum sharing method under different standards according to the third embodiment of the present disclosure;

4 is a schematic diagram of a 5M spectrum bandwidth of 850 MHZ deployed with GSM and UMTS according to the third embodiment of the present disclosure;

5 is a structural diagram of a spectrum sharing device under different standards according to a fourth embodiment of the present disclosure.

detailed description

In order to make the purpose, technical solutions and advantages of the present disclosure more clear, the present disclosure will be described in further detail in conjunction with the accompanying drawings and specific embodiments.

Example one

Embodiment 1 of the present disclosure provides a spectrum sharing method under different systems performed on a base station side of a first system. In this embodiment, the base stations of the first standard and the base stations of the second standard are co-deployed base stations, that is, base stations of two standards are installed at the same site.

As shown in FIG. 1, it is a flowchart of a spectrum sharing method under different standards performed on a base station side of a first standard according to the first embodiment of the present disclosure.

Step S110: Detect the frequency occupancy status of the first-standard base station at the current service time slot.

The frequency point occupancy status includes: the occupancy status on the first-standard base station side for each frequency point shared by the first-standard base station and the second-standard base station. Among them, the occupied state includes: an occupied state (occupy) and an idle state (idle).

In one embodiment, when each service time slot arrives, it is detected that each frequency point under the service time slot is occupied by the base station of the first standard. In this way, it is possible to obtain the occupancy and idle status of each frequency point of the first-standard base station sharing the carrier frequency with the second-standard base station under the current service time slot.

In this embodiment, the first-standard base station may be a GSM base station or an LTE base station; the second-standard base station may be a UMTS base station (UMTS NodeB). For example, for the case where the GSM base station and the UMTS base station share the carrier frequency, the occupancy status of the GSM base station at the frequency point of the current service time slot can be detected. Another example: For the case where the UMTS base station and the LTE base station share a carrier frequency, the occupancy state of the LTE base station at the frequency point of the current service time slot can be detected.

Step S120: Send the first-standard base station to the second-standard base station in the current service slot frequency point occupancy state, so that the second-standard base station according to the first-standard base station in the current service slot frequency point occupancy state, during the current service Slot, the filtering process is performed on the frequency points occupied by the base stations of the first standard.

When the second-standard base station is a UMTS base station, the first-standard base station occupies the frequency of the current service time slot to the RNC (Radio Network Controller, radio network controller) of the second-standard base station, and the first-standard base station is transmitted through the RNC The base station occupies the frequency of the current service time slot to the second-standard base station.

When the base station of the first standard is a GMS base station, the interface of the first standard base station at the frequency of the current service slot is sent to the RNC of the UMTS base station through the interface between the GSM base station and the RNC (such as the IUR-G interface), And send the occupancy status of the first-standard base station at the frequency point of the current service time slot to the UMTS base station through the RNC.

When the first-standard base station is an LTE base station, the first-standard base station is sent to the RNC of the UMTS base station through the interface between the LET base station and the RNC, and the first-standard base station is sent through the RNC The occupancy status at the frequency of the current service time slot is sent to the UMTS base station.

In this embodiment, in the case where the first-standard base station and the second-standard base station are deployed together, the first-standard base station may occupy the frequency point according to the occupancy of the first-standard base station on the frequency point. Filtering at frequency points can effectively solve the problem of mutual interference when different systems are deployed together. In one embodiment, this embodiment can solve the downlink interference from UMTS base stations to GSM base stations and LTE base stations, and can reduce the spectrum bandwidth of UMTS base stations and GSM base stations and UMTS base stations and LTE base stations to 5MHz, which is effective Solve the problem of the shortage of 900MHz and 850MHz spectrum bandwidth, can accommodate more users at 900MHz and 850MHz.

Example 2

In the second embodiment, a spectrum sharing method under different systems performed on the base station side of the second system is provided. In this embodiment, the first-standard base station and the second-standard base station are co-deployed base stations.

As shown in FIG. 2, it is a flowchart of a spectrum sharing method under different systems performed on the base station side of the first system according to the second embodiment of the present disclosure.

Step S210: Receive the occupancy status of the first-standard base station at the frequency point of the current service time slot sent by the first-standard base station.

After obtaining the frequency occupancy status of the first-standard base station in the current service time slot, you can determine the occupancy status of each frequency point in the frequency points shared by the first-standard base station and the second-standard base station, that is: which frequency points are being The first standard base station is occupied, which frequency points are idle.

In this embodiment, the first-standard base station may be a GSM base station or an LTE base station; the second-standard base station may be a UMTS base station.

When the second-standard base station is a UMTS base station, the RNC in the second-standard base station can receive the occupancy status of the first-standard base station at the frequency point of the current service time slot sent by the first-standard base station. After receiving the occupancy status of the first-standard base station in the current service time slot from the first-standard base station, the RNC converts the occupancy state of the first-standard base station in the current service time slot to private interface data, and converts the private The interface data is sent to the base station of the second standard through the private interface.

The private interface data may be preset signaling messages. The RNC and the second-standard base station may determine, by means of pre-negotiation, the signaling message used by the RNC to send the first-standard base station when the frequency of the current service slot is occupied. In one embodiment, the RNC and the base station of the second standard determine, through negotiation, that a common measurement initialization message is used to carry the frequency occupancy status of the base station of the first standard in the current service time slot. Then, after receiving the occupancy status of the first-standard base station in the current service time slot from the first-standard base station, the RNC expands the field of the first-standard base station in the current service slot's frequency occupancy state to form a public measurement An initialization message, and send the public measurement initialization message to the second-standard base station through a private interface.

The private interface is the communication interface between the RNC and the second-standard base station. In this embodiment, the private interface may be an IUB interface between the RNC and the second-standard base station.

After receiving the private interface data sent by the RNC, the second-standard base station can analyze the private-interface data to parse out the frequency-occupancy status of the first-standard base station at the current service time slot.

Step S220: Perform filtering processing on the frequency points occupied by the first-standard base station in the current service time slot according to the state of the first-standard base station in the current service time slot.

In the current service time slot, perform filtering processing on the frequency points occupied by the first standard base station, that is: the frequency points in the occupied state; for the frequency points not occupied by the first standard base station, that is: the frequency points in the idle state, not Perform filter processing.

In one embodiment, a downlink adaptive bandpass filter may be preset; in the current service time slot, the downlink adaptive bandpass filter is used to perform filtering processing on the frequency points occupied by the base stations of the first standard. No filtering process is performed for the frequency points not occupied by the first-standard base station. After the downlink adaptive band-pass filter is activated, the downlink adaptive band-pass filter can perform the filtering process for each frequency point separately.

For example, in the 850MHZ frequency band, a UMTS cell and an LTE cell are deployed together. The UMTS cell performs normal filtering. At this time, the LTE cell is deleted. When the LET cell is deleted, the LTE base station reports a message that the frequency of the LTE base station is released to the RNC of the UMTS base station, that is, the LTE base station sends to the RNC. The frequency occupancy status of the LTE base station in the current time slot is: the shared frequency points of the LTE base station and the UMTS base station are both idle; the RNC notifies the UMTS base station that the frequency point of the LTE base station is released, and the UMTS base station receives the RNC notification After the information of the frequency points of the LTE base station is released, it will stop filtering the frequency points to reduce the performance loss of the UMTS base station.

In this embodiment, in the case where the first-standard base station and the second-standard base station are deployed together, the first-standard base station may occupy the frequency point according to the occupancy of the first-standard base station on the frequency point. Filtering at frequency points can effectively solve the problem of mutual interference when different standards are deployed together. In one embodiment, this embodiment can solve the downlink interference from UMTS base stations to GSM base stations and LTE base stations, and can reduce the spectrum bandwidth of UMTS base stations and GSM base stations and UMTS base stations and LTE base stations to 5MHz, which is effective Solve the problem of the shortage of 900MHz and 850MHz spectrum bandwidth, can accommodate more users at 900MHz and 850MHz.

In this embodiment, the second-standard base station introduces a downlink adaptive band-pass filter, and adaptively turns on or off the downlink adaptive band-pass filter according to the frequency usage of the first-standard base station, so as to reduce The performance loss caused by the shared carrier frequency to the second-standard base station.

Example Three

This embodiment provides a more specific embodiment to further illustrate the spectrum sharing method under different standards of the present disclosure. In this embodiment, the co-deployment of GSM base stations and UMTS base stations is used as an example for description. The situation of co-deployment of LTE base stations and UMTS base stations is similar to this embodiment, and details are not described here. As shown in FIG. 3, it is a schematic diagram of a spectrum sharing method under different standards according to the third embodiment of the present disclosure.

Set up GSM base stations and UMTS base stations at the same site to achieve a total deployment of 850MHz.

On the UMTS base station side, set a downlink adaptive bandpass filter. When performing the spectrum sharing process under different standards, the downlink adaptive band-pass filter is started.

In T1 time slot, GSM BSC (Base Station Controller) reports to RNC that T0 time slot F0, F1, F2, F3, F4, F5 is occupied by GSM cell; RNC receives the report of GSM BSC After the message, the message is transparently transmitted to the UMTS NodeB; after receiving the message transparently transmitted by the RNC, the UMTS NodeB starts the filtering function corresponding to the frequency points F0, F1, F2, F3, F4, and F5 in the T1 time slot, and Filtering is performed at F0, F1, F2, F3, F4, and F5 frequency points.

In the T2 time slot, the GSM BSC reports to the RNC that in the T2 time slot, F0, F2, and F5 are occupied by the GSM cell and F1, F3, and F4 are idle. After receiving the message reported by the GSM BSC, the RNC transparently transmits the message Passed to UMTS NodeB; after receiving the RNC transparent message, UMTS NodeB turns on the filter function corresponding to F0, F2, and F5 frequency points in T2 time slot, and closes the filter function corresponding to F1, F3, and F4 frequency points, respectively. To filter the F0, F2, and F5 frequencies.

For subsequent time slots, reference may be made to the execution flow of the T1 time slot and the T2 time slot, which will not be repeated here.

In this embodiment, the GSM base station and the UMTS NodeB can realize spectrum sharing, and the UMTS NodeB does not interfere with the downlink transmission of the GSM base station, and the minimum spectrum bandwidth jointly deployed by the GSM base station and the UMTS NodeB can be reduced to 5 MHz. As shown in FIG. 4, it is a schematic diagram of 5M spectrum bandwidth of 850 MHZ deployed in total for GSM and UMTS according to the third embodiment of the present disclosure. The GSM base station and UMTS NodeB are deployed together. Among them, the GSM base station and UMTS NodeB share some frequency points.

Example 4

This embodiment provides a spectrum sharing device under different standards. As shown in FIG. 5, it is a structural diagram of a spectrum sharing device under different standards according to a fourth embodiment of the present disclosure.

In this embodiment, the spectrum sharing devices under different standards are set on the base station side of the first standard, and the steps of performing the spectrum sharing method on the base station side of the first standard are performed on the base station side of the second standard. Steps of the spectrum sharing method under different systems on the two-system base station side.

In this embodiment, the structural diagrams of spectrum sharing devices under different standards according to the fourth embodiment of the present disclosure include, but are not limited to: a processor 510 and a memory 520.

The processor 510 is used to execute the spectrum sharing program under different standards stored in the memory 520, to implement the steps of the spectrum sharing method under different standards executed on the base station side of the first standard, or to implement the above-mentioned execution on the base station side of the second standard Steps of spectrum sharing methods under different standards.

The processor 510 is used to execute a spectrum sharing program under different standards stored in the memory 520, so as to implement the steps of the spectrum sharing method under different standards executed on the base station side of the first standard: when detecting the current service of the base station of the first standard The frequency occupancy status of the slot; sending the frequency occupancy status of the first-standard base station in the current service time slot to the second-standard base station; wherein, the first-standard base station and the second-standard base station are co-deployed base stations , The base station of the second standard performs filtering processing on the frequency points occupied by the base station of the first standard in the current service time slot according to the occupancy state of the base station of the first standard in the current service time slot.

Wherein, the first standard base station is a global mobile communication system GSM base station or a long-term evolution LTE base station; the second standard base station is a universal mobile communication system UMTS base station.

Wherein, sending the first-standard base station's frequency-occupied state of the current service slot to the second-standard base station includes: sending the first-standard base station's frequency-occupied state of the current service slot to the second The radio network controller RNC of the two-standard base station sends the first-standard base station occupancy status at the frequency of the current service time slot to the second-standard base station through the RNC.

The processor 510 is used to execute a spectrum sharing program under different standards stored in the memory 520, so as to implement the step of the spectrum sharing method under different standards executed on the base station side of the second standard: receiving the The occupancy status of the first-standard base station at the frequency point of the current service time slot; wherein, the first-standard base station and the second-standard base station are co-deployed base stations; according to the frequency of the first-standard base station at the current service time slot In the occupied state, in the current service time slot, a filtering process is performed on the frequency point occupied by the first-standard base station.

Wherein, the base station of the first standard is a GSM base station or an LTE base station; the base station of the second standard is a UMTS base station.

Wherein, receiving the occupancy status of the first-standard base station at the frequency point of the current service time slot sent by the first-standard base station includes: receiving, by the RNC in the second-standard base station, the first-standard base station The standard base station occupies the frequency of the current service time slot.

After receiving the occupancy status of the first-standard base station at the frequency point of the current service time slot sent by the first-standard base station, the RNC occupies the first-standard base station at the frequency point of the current service time slot The state is converted into private interface data, and the private interface data is sent to the base station of the second standard through the private interface.

Wherein, according to the frequency of the first standard base station occupied in the current service time slot, performing filtering processing on the frequency point occupied by the first standard base station in the current service time slot includes: Adaptive band-pass filter; in the current service time slot, using the downlink adaptive band-pass filter to perform filtering processing on the frequency points occupied by the first-standard base station.

Example 5

Embodiments of the present disclosure also provide a storage medium (computer-readable storage medium). One or more programs are stored in the storage medium here. Wherein, the storage medium may include volatile memory, such as random access memory; the memory may also include non-volatile memory, such as read-only memory, flash memory, hard disk, or solid-state hard disk; the memory may also include combination.

When one or more programs in the storage medium can be executed by one or more processors to implement the steps of the above-mentioned spectrum sharing method under different standards performed on the base station of the first standard, or to implement the foregoing execution on the base station side of the second standard The steps of the spectrum sharing method under different systems.

The processor is used to execute an image storage control program stored in a memory, so as to implement the steps of a spectrum sharing method under different standards performed on the base station of the first standard: detecting the occupancy status of the base station of the first standard at the frequency point of the current service time slot Sending the first-standard base station to the second-standard base station in the current service slot frequency occupancy state; wherein, the first-standard base station and the second-standard base station are co-deployed base stations, and the second-standard base station The base station performs filtering processing on the frequency points occupied by the first-standard base station in the current service time slot according to the occupancy state of the first-standard base station in the current service time slot.

The processor is used to execute an image storage control program stored in a memory, so as to implement the steps of a spectrum sharing method under different standards performed on the base station of the first standard: receiving the base station of the first standard sent by the base station of the first standard in the current Frequency occupancy status of service time slots; wherein the first-standard base station and the second-standard base station are co-deployed base stations; according to the occupancy status of the first-standard base station in the current service time slot at the frequency point, in the In the current service time slot, filter processing is performed on the frequency point occupied by the base station of the first standard.

Those of ordinary skill in the art may understand that all or some of the steps, systems, and functional modules / units in the method disclosed above may be implemented as software, firmware, hardware, and appropriate combinations thereof. In a hardware implementation, the division between the functional modules / units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be composed of several physical The components are executed in cooperation. Some or all physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit . Such software may be distributed on computer-readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). As is well known to those of ordinary skill in the art, the term computer storage media includes both volatile and nonvolatile implemented in any method or technology for storing information such as computer readable instructions, data structures, program modules, or other data Sex, removable and non-removable media. Computer storage media include but are not limited to RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cartridges, magnetic tape, magnetic disk storage or other magnetic storage devices, or may Any other medium for storing desired information and accessible by a computer. In addition, it is well known to those of ordinary skill in the art that the communication medium generally contains computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transmission mechanism, and may include any information delivery medium .

In the case where the first-standard base station and the second-standard base station are deployed together, the present disclosure may filter the frequency points occupied by the first-standard base station on the second-standard base station side according to the occupancy of the first-standard base station on the frequency point Processing can effectively solve the problem of mutual interference when different standards are deployed together.

Although the preferred embodiments of the present disclosure have been disclosed for illustrative purposes, those skilled in the art will realize that various improvements, additions, and substitutions are also possible, and therefore, the scope of the present disclosure should not be limited to the above-described embodiments.

Claims

A spectrum sharing method under different standards, wherein the steps performed by the base station side of the first standard include:

Detect the occupancy status of the first standard base station at the frequency point of the current service time slot;

Sending the first-standard base station to the second-standard base station in the current service slot frequency occupancy state; wherein, the first-standard base station and the second-standard base station are co-deployed base stations, and the second-standard base station According to the occupancy state of the first-standard base station at the frequency point of the current service time slot, in the current service time slot, filtering processing is performed on the frequency point occupied by the first-standard base station.
The method according to claim 1, wherein

The first-standard base station is a global mobile communication system GSM base station or a long-term evolution LTE base station;

The second-standard base station is a universal mobile communication system UMTS base station.
The method according to claim 1, wherein sending the occupancy status of the first-standard base station to the second-standard base station at the frequency of the current service slot includes:

Sending the occupancy status of the first-standard base station at the frequency point of the current service time slot to the radio network controller RNC of the second-standard base station, and sending the frequency of the first-standard base station at the current service time slot through the RNC The point occupancy status is sent to the second-standard base station.
A spectrum sharing method under different standards, wherein the steps performed by the base station side of the second standard include:

Receiving the occupancy status of the first-standard base station at the frequency point of the current service time slot sent by the first-standard base station; wherein, the first-standard base station and the second-standard base station are co-deployed base stations;

According to the occupancy state of the first-standard base station at the frequency point of the current service time slot, in the current service time slot, filtering processing is performed on the frequency point occupied by the first-standard base station.
The method according to claim 4, wherein

The base station of the first standard is a GSM base station or an LTE base station;

The base station of the second standard is a UMTS base station.
The method according to claim 4, wherein receiving the occupancy status of the first-standard base station at the frequency point of the current service time slot sent by the first-standard base station includes:

Receiving, by the RNC in the second-standard base station, the frequency-occupancy status of the first-standard base station at the current service time slot sent by the first-standard base station.
The method according to claim 6, wherein

After receiving the occupancy state of the first-standard base station at the frequency point of the current service time slot sent by the first-standard base station, the RNC converts the occupancy state of the first-standard base station at the frequency point of the current service time slot Is private interface data, and sends the private interface data to the base station of the second standard through the private interface.
The method according to any one of claims 4 to 7, wherein, according to the occupancy state of the base station of the first standard at the frequency point of the current service time slot, the current standard time slot The frequency occupied by the base station performs filtering processing, including:

Pre-set downlink adaptive bandpass filter;

In the current service time slot, the downlink adaptive band-pass filter is used to perform filtering processing on the frequency points occupied by the first-standard base station.
A spectrum sharing device under different standards, wherein the spectrum sharing device under different standards includes: a memory, a processor, and a computer program stored on the memory and executable on the processor, the When the computer program is executed by the processor, the steps of the spectrum sharing method according to any one of claims 1 to 3 are realized, or the method according to any one of claims 4 to 8 is realized Steps of spectrum sharing method.
A storage medium, wherein a spectrum sharing program under different standards is stored on the storage medium, and when the spectrum sharing program under different standards is executed by a processor, the difference according to any one of claims 1 to 3 is realized A step of a spectrum sharing method under a standard, or a step of implementing a method of spectrum sharing under a different standard according to any one of claims 4-8.