KR101695640B1 - Coexistence system for measuring channel information between spectrum sharing devices and method thereof - Google Patents

Abstract

Disclosed is a mutual coexistence management system and method for measuring channel information between frequency sharing devices according to the present invention.
The mutual coexistence management system for measuring channel information between frequency sharing devices according to the present invention is provided for each of a plurality of white space objects (WSOs) having at least one measurement capability capable of measuring channel information on an operating channel in use Multiple CEs (Coexistence Enabler); (CM) that receives channel information about the operation channel from at least one WSO in another neighboring group according to a result of checking the measurement capability of the corresponding WSO in cooperation with at least one CE in the group, ); And a Coexistence Discovery and Information Server (CDIS) for registering at least one measurement capability for each of the plurality of WSOs.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mutual coexistence management system for measuring channel information between frequency sharing devices,

The present invention relates to a mutual coexistence management system, and more particularly, to a mutual coexistence management system in which when a frequency sharing device can not measure predetermined channel information due to its limitation of its measurement capability, And more particularly, to a mutual coexistence management system and method for measuring channel information between frequency sharing devices.

In general, mutual coexistence technology is a technique in which radio devices using different communication protocols in a core frequency (30 MHz ~ 10 GHz) where various DSA (Dynamic Spectrum Access) technologies are expected to appear are mutually coexisted without harmful interference Management technology. In particular, the DSA technology such as underlay and overlay is a concept contrary to the current static spectrum management technology, and it manages the spectrum dynamically according to the peripheral propagation environment of the radio equipment, It is a wireless connection and management technology that maximizes the flexibility and efficiency of use. IEEE 802, SCC 41, etc., in order to prepare for the frequency spectrum sharing technology that is emerging in various wireless services.

In Korea, studies on integrated mutual coexistence conditions of various sharing technologies to secure optimal frequency efficiency among various frequency sharing devices in a congested radio environment such as frequency auction system, permission and license-exempt band sharing systematically It is not getting.

However, in IEEE 802.19, the international standardization organization, WG (wireless coexistence working group) dealing with the coexistence problem of 802 standards, coexistence scenarios between frequency sharing wireless systems in licensed and license-exempt bands, mutual coexistence analysis, Mechanisms, and so on.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a frequency sharing apparatus and a method for controlling the same, The present invention provides a mutual coexistence management system for measuring channel information between frequency sharing devices and a method thereof.

However, the objects of the present invention are not limited to those mentioned above, and other objects not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided a mutual coexistence management system for measuring channel information between frequency sharing devices, comprising: a plurality of channels having at least one measurement capability capable of measuring channel information on an operating channel in use; A plurality of CE (Coexistence Enabler) provided for each WSO (White Space Object) of the mobile terminal; (CM) that receives channel information about the operation channel from at least one WSO in another neighboring group according to a result of checking the measurement capability of the corresponding WSO in cooperation with at least one CE in the group, ); And a Coexistence Discovery and Information Server (CDIS) registering at least one measurement capability for each of the plurality of WSOs.

Preferably, the CM determines whether the corresponding WSO in its group is capable of measuring predetermined channel information, and if the CM does not have the capability of measuring, it determines that at least one WSO The channel information for the operation channel is received from the base station.

Preferably, the CM selects one WSO in the closest distance of at least one WSO in the neighboring other group to confirm the measurement capability of the selected WSO, and if the selected WSO has a measurement capability The channel information about the operation channel to be measured is provided from the selected WSO.

Preferably, the CM selects one WSO in the closest distance of at least one WSO in the neighboring other group to confirm the measurement capability of the selected WSO, and if the selected WSO has a measurement capability And if not, selects another WSO of at least one WSO in the neighboring other group.

Advantageously, the CM is characterized in that if at least one WSO in the neighboring other group is not capable of measuring, the CM determines that the measurement using the neighboring at least one WSO has failed.

Preferably, the CM is capable of identifying the measurement capability of all of the at least one WSO in the neighboring group, and determining, as a result of the determination, a channel for the operation channel to be measured from all of the at least one WSO And determines channel information for the corresponding channel based on the provided channel information.

Preferably, the CM is capable of verifying the capability of all of the at least one WSO in the neighboring group, and if the at least one WSO with the capability to measure is not present as a result of the checking, It is determined that the measurement has failed.

Preferably, the CM requests channel information to the corresponding WSO in cooperation with a CE in the group, and receives channel information measured by the corresponding WSO from the CE in response to the channel information.

Preferably, the CM is provided with measured channel information from a WSO within the group of its own.

Preferably, when the new WSO is newly configured, the CE requests at least one measurement capability to the WSO to which it belongs, and the at least one measurement capability is provided in response to the at least one measurement capability of the WSO. And the like.

Preferably, when the information of the WSO to which the CE belongs is changed, the CE is provided with at least one measurement capability from the corresponding WSO and registers at least one measurement capability of the provided WSO in the CDIS.

Preferably, the CM receives channel information from at least one WSO neighboring from its corresponding WSO in its group, receives channel information measured from at least one WSO belonging to another neighboring group in response thereto, and provides And provides the received channel information to the corresponding WSO.

In another aspect of the present invention, there is provided a method for measuring channel information between frequency sharing devices in a mutual coexistence management system, the method comprising the steps of: receiving a corresponding WSO (CoA) having the CE interlocked with at least one coexistence enabler Confirming the measurement capability of the white space object; Receiving channel information on the operation channel from at least one WSO in another neighboring group according to a result of the checking; And determining channel information on the operation channel based on the provided channel information.

Preferably, the providing and receiving step determines whether the corresponding WSO in the group is capable of measuring the predetermined channel information, and if the checking result indicates that there is no corresponding measurement capability, at least one The channel information of the operation channel is received from the WSO of the BS.

Preferably, the providing and receiving step may include selecting one WSO at a closest distance from at least one WSO in the neighboring other group to check the measurement capability of the selected WSO, Channel information on the operation channel to be measured is provided from the selected WSO.

Preferably, the providing and receiving step may include selecting one WSO at a closest distance from at least one WSO in the neighboring other group to check the measurement capability of the selected WSO, And if not, selects another WSO of at least one WSO in the neighboring other group.

Advantageously, the determining step is characterized in that if at least one WSO in the neighboring other group is not capable of measuring, it is determined that the measurement using the neighboring at least one WSO has failed.

Advantageously, said determining is to determine a measurement capability of all of at least one WSO in said neighboring group and to determine, from said at least one WSO with said measurement capability, And the channel information for the corresponding channel is determined based on the provided channel information.

Advantageously, said determining comprises: verifying the measurement capability of all of at least one WSO in said neighboring group, and if the at least one WSO with said measurement capability is not present as a result of said checking, Is judged to have failed.

Accordingly, when the frequency sharing device can not measure the preset channel information due to the limit of its measurement capability, the frequency sharing device measures the corresponding channel information using at least one adjacent frequency sharing device, It is possible to measure the information.

In addition, since the present invention enables measurement using at least one adjacent frequency sharing device, it is possible to improve frequency sharing efficiency between a plurality of frequency sharing devices.

1 is a diagram illustrating a mutual coexistence management system according to an embodiment of the present invention.
FIG. 2 is a first diagram illustrating a registration process of a WSO according to an embodiment of the present invention.
3 is a second diagram illustrating a registration process of a WSO according to an embodiment of the present invention.
4 is a first diagram illustrating a method for measuring channel information according to an embodiment of the present invention.
5 is a second diagram illustrating a method for measuring channel information according to an embodiment of the present invention.
FIG. 6 is a first diagram illustrating a channel measurement process according to an embodiment of the present invention. Referring to FIG.
7 is a second diagram illustrating a channel measurement process according to an embodiment of the present invention.
8 is a view for explaining a measurement request process according to an embodiment of the present invention.

Hereinafter, a mutual coexistence management system and method for measuring channel information between frequency sharing devices according to an embodiment of the present invention will be described with reference to FIGS. 1 to 8. FIG. The present invention will be described in detail with reference to the portions necessary for understanding the operation and operation according to the present invention.

In describing the constituent elements of the present invention, the same reference numerals may be given to constituent elements having the same name, and the same reference numerals may be given thereto even though they are different from each other. However, even in such a case, it does not mean that the corresponding component has different functions according to the embodiment, or does not mean that the different components have the same function. It should be judged based on the description of each component in the example.

Particularly, in the present invention, when the frequency sharing device can not measure the preset channel information due to the limit of its measurement capability, a new measurement method is proposed in which the channel information is measured using at least one adjacent frequency sharing device .

1 is a diagram illustrating a mutual coexistence management system according to an embodiment of the present invention.

1, a mutual coexistence management system according to an embodiment of the present invention includes a coexistence discovery and information server (CDIS) 110, a channel information database 120, a coexistence manager 130 ), A coexistence enabler (CE) 140, and a frequency sharing device or a white space object (WSO) 150.

The CDIS 110 refers to an entity that plays a role in assisting decisions related to controlling the frequency sharing device of the CM. The CDIS 110 interworks with a plurality of CMs 130 to provide or receive various kinds of information.

The channel information DB 120 may store channel information available to the frequency sharing devices.

The CM 130 refers to an entity making a decision related to frequency sharing such as an operation frequency allocation, a transmission power allocation, and a transmission time allocation for improving frequency sharing efficiency between a plurality of frequency sharing devices.

The CM 130 can collect channel information and the like measured through the frequency sharing device. In particular, when CM 130 needs to cooperate with other CMs controlling other frequency sharing devices, it can exchange information with other CMs or exchange information through CDIS 110. [

In addition, the CM 130 may receive channel information in conjunction with the channel information DB 120. [

The CE 140 is an entity existing in the frequency sharing device and serving as a channel between the CM and the frequency sharing device.

The CE 140 extracts context information such as a radio access method, a transmission power, a spectrum sensing threshold, and a location associated with the corresponding frequency sharing device requested by the CM 130 from the frequency sharing device 150 To the requesting CM 130.

In addition, the CE 140 provides event information such as a change of the context information requested from the CM 130, and resets the configuration of the frequency sharing device indicated by the CM 130 It can be reflected on the frequency sharing device.

The WSO 150 is a frequency sharing device and can be registered in the CM 130 in advance via the CE 140. [ The WSO 150 registers the measurement capability together with its ID, a device type, a wireless access method, and the like. For example, the measurement capability includes a feature measurement capability, an energy measurement capability, can do.

At this time, because the measurement capabilities of the WSO 150 may be different from each other, the WSO 150 performs measurements that can not be performed by the neighboring at least one frequency sharing device.

FIG. 2 is a first diagram illustrating a registration process of a WSO according to an embodiment of the present invention.

2, when the WSO 150 is newly configured in the system, the CE 1400 in the new configured WSO 150 sends the GetReInfo.request primitive for requesting the information of the WSO 150 to the corresponding WSO 150 (S210).

Next, upon receiving the GetReInfo.request primitive, the WSO 150 may send a GetReInfo.response primitive to the CE 140 to provide information of the WSO in response to the received GetReInfo.request primitive (S220).

At this time, the Indication-based primitive used here is shown as [Table 1].

GetRegInfo.request ()

GetRegInfo.response {
measurementCapability OPTIONAL
}
MeasurementCapability :: = ENUMERATED {
energyDetection,
featureDetection,
...
}

As shown in [Table 1], the GetReInfo.Response primitive may include the capability of WSO to be registered, such as energy detection capability, feature detection capability, and the like.

Next, upon receiving the GetReInfo.response primitive, the CE 140 transmits a CE_Registration_Request message to the corresponding CM 130 for requesting registration of the corresponding WSO based on the information contained in the received GetReInfo.response primitive (S230 ), The corresponding CM 130 may receive the Registration_Response message in response thereto (S240).

At this time, the CE 140 may transmit the GetRegInfo.confirm primitive to the WSO 150 (S242).

Upon receiving the received CE_Registration_Request message, the CM 130 transmits a CM_ Registration_Request message for requesting registration of the corresponding WSO to the CDIS 110 (S250). The CM 130 transmits a Registration_Response message (S260).

The Request / Response-based message used here is shown in Table 2 below.

CE_Registration_Request :: = SEQUENCE {
measurementCapability MeasurementCapability OPTIONAL
}
CM_Registration_Request :: = SEQUENCE {
measurementCapability MeasurementCapability OPTIONAL
}
Registration_Response :: = SEQUENCE {
}
MeasurementCapability :: = ENUMERATED {
energyDetection,
featureDetection,
...
}

Here, the parameter energyDetection indicates the energy detection capability and the parameter featureDetection indicates the feature detection capability.

As shown in Table 2, the CE_Registration_Request message may include measurable capabilities of the WSO to be registered, such as energy detection capability, feature detection capability, and the like.

3 is a second diagram illustrating a registration process of a WSO according to an embodiment of the present invention.

As shown in FIG. 3, when the information of the pre-registered WSO 150 is changed, the WSO 150 to which the information has been changed can transmit the NewRegInfo.indication primitive for requesting the registration of the corresponding information to the corresponding CE 140 (S310).

Upon receiving the NewRegInfo.indication primitive, the CE 140 transmits a CE_Registration_Request message to the CM 130 for requesting registration of the corresponding information (S320), and transmits a Registration_Response message in response to the CE_Registration_Request message from the CM 130 (S330).

At this time, the CE 140 may transmit the NewRegInfo.confirm primitive to the WSO 150 (S332).

Upon receiving the CE_Registration_Request message, the CM 130 transmits a CM_Registration_Request message to the CDIS 110 for requesting registration of the corresponding information (S340), and receives a Registration_Response message in response to the CM_Registration_Request message from the CDIS 110 S350).

4 is a first diagram illustrating a method for measuring channel information according to an embodiment of the present invention.

As shown in FIG. 4, the mutual coexistence management system according to the present invention can check whether the target WSO is capable of measuring the interference level of the channel being used (S410).

Next, the mutual coexistence management system can select any of the target WSO and at least one neighboring WSO if it is determined that the target WSO does not have the capability of measuring the interference level (S411).

For example, the mutual coexistence management system may select either the target WSO included in the neighbor list generated by generating a neighbor list including at least one WSO neighboring the target WSO, and at least one neighboring WSO neighboring the target WSO. At this time, the mutual coexistence management system selects the WSO located at the closest distance from the target WSO and at least one neighboring WSO.

On the other hand, when the mutual coexistence management system determines that the target WSO is capable of measuring the interference level (S411), the interference level of the corresponding channel can be measured through the target WSO (S412).

Next, the mutual coexistence management system can confirm whether the selected one WSO is capable of measuring the interference level (S414).

Next, if the mutual coexistence management system determines that there is no capability to measure the interference level as a result of checking (S415), it may determine whether all neighboring WSO's measurement capabilities are confirmed (S416).

On the other hand, when the mutual coexistence management system determines that the selected WSO is capable of measuring the interference level, the interference level of the selected channel can be measured through the selected WSO (S412).

Next, the mutual coexistence management system may select another WSO of at least one neighboring WSO (S418), if it is determined that the measurement capability of all neighboring WSOs is not confirmed.

On the other hand, if the mutual coexistence management system determines that the measurement capability of all neighboring WSOs is determined as a result of the determination, it is determined that all neighboring WSOs do not have the capability of measuring the interference level and the measurement of the interference level using the neighboring WSO fails (S417).

5 is a second diagram illustrating a method for measuring channel information according to an embodiment of the present invention.

As shown in FIG. 5, the mutual coexistence management system according to the present invention can check whether the target WSO is capable of measuring the interference level of the channel being used (S510).

Next, the mutual coexistence management system can select any one of the target WSO and at least one neighboring WSO if it is determined that the target WSO does not have the capability to measure the interference level (S511).

For example, the mutual coexistence management system may select either the target WSO included in the neighbor list generated by generating the neighbor list including at least one WSO neighboring the target WSO, and at least one neighboring WSO adjacent to the target WSO (S515) . At this time, the mutual coexistence management system selects the WSO located at the closest distance from the target WSO and at least one neighboring WSO.

On the other hand, when the mutual coexistence management system determines that the target WSO is capable of measuring the interference level (S511), the interference level of the target channel can be measured through the target WSO (S512).

The mutual coexistence management system checks whether all the WSOs have completed the measurement (S513). If all the WSOs have completed the measurement, the interference level of the corresponding channel can be determined (S514).

At this time, all WSOs depend on the measurement capability of the target WSO. That is, if the target WSO is capable of measuring the interference level, the mutual coexistence management system will reflect the interference level measured at the target WSO and if the target WSO does not have the capability to measure the interference level, Lt; RTI ID = 0.0 > WSO. ≪ / RTI >

Next, the mutual coexistence management system can confirm whether the selected one WSO is capable of measuring the interference level (S516).

Next, if the mutual coexistence management system determines that there is no capability to measure the interference level as a result of checking (S517), it can be confirmed whether measurement is completed in all the neighboring WSOs (S518).

On the other hand, in the mutual coexistence management system, if it is determined that the selected WSO has the capability of measuring the interference level (S517), the interference level of the selected channel can be measured through the selected WSO (S512).

Next, the mutual coexistence management system can confirm whether the measurement is successfully performed in at least one WSO in the neighbor list if the measurement is completed in all the WSOs as a result of checking (S519).

On the other hand, the mutual coexistence management system can select again one WSO from the pre-generated neighbor list (S515) if the measurement is not performed in all the WSOs as a result of checking.

Next, the mutual coexistence management system can determine the interference level of the corresponding channel based on the measured at least one interference level if the measurement is successfully performed in the at least one WSO as a result of checking (S514).

For example, the mutual coexistence management system determines an average value of at least one measured interference level and determines an average value of the obtained interference levels as an interference level of the corresponding channel.

On the other hand, the mutual coexistence management system may determine that the measurement of the interference level using the neighboring WSO has failed if all the neighboring WSOs are not capable of measuring the interference level, if at least one WSO has not been measured (S520).

FIG. 6 is a first diagram illustrating a channel measurement process according to an embodiment of the present invention. Referring to FIG.

6, the CM 130 transmits a Measurement_Request message to the CE 140 for requesting the interference level measurement of the corresponding channel (S610). The CM 130 transmits a Measurement_Request message from the CE 140 to the Measurement_Confirm Message (S620).

Next, upon receiving the Measurement_Request message, the CE 140 may transmit a GetMeasurement.request primitive for requesting the interference level measurement of the corresponding channel to the WSO 150 (S630).

Next, when the WSO 150 receives the GetMeasurement.request primitive, it can measure the interference level of the channel and send a GetMeasurement.response primitive containing the measured channel's interference level to the CE 140 (S640) .

Next, upon receiving the GetMeasurement.response primitive, the CE 140 transmits a Measurement_Response message including interference information of the measured channel to the CM 130 (S650), and transmits a Measurement_Confirm message (S660).

At this time, the primitive based on the Request / Response used here is shown as [Table 3].

GetMeasurement.request (
measurementDescription
)

MeasSchedule :: = SEQUENCE {
measStartTime REAL,
numberOfMeasurements INTEGER
timeBetweenMeasurements REAL
}
MeasFreq :: = SEQUENCE {
measStartAFreq REAL OPTIONAL,
measEndFreq REAL OPTIONAL,
listOfChNumber SEQUENCE OF INTEGER OPTIONAL
}

MeasDescr :: = ENUMERATED {
interferenceLevel,
...
}

MeasurementDescription :: = SEQUENCE OF SEQUENCE {
measDescr MeasDescr,
measSchedule MeasSchedule,
measFreq MeasFreq
}

GetMeasurement.response (
measurementResult)

ReqInfoDescr :: = ENUMERATED {
interferenceLevel,
...
}

ReqInfoValue :: = CHOICE {
interferenceLevelValue REAL,
...
}

MeasurementResult :: = SEQUENCE OF SEQUENCE {
reqInfoDescr ReqInfoDescr,
reqInfoValue ReqInfoValue
}

MeasEndFreq represents the end frequency, listOfChNumber represents the channel number list, and interferenceLevelValue represents the interference frequency. In the above description, the parameter " measStartTime " represents the start time, the numberOfMeasurements represents the measurement count, the timeBetweenMeasurements represents the measurement interval time, measStartAFreq represents the start frequency, Represents the level value.

As in [Table 3], the GetMeasurement.response primitive can contain the interference level of the corresponding channel.

The Request / Response-based message used here is shown in Table 4 below.

Measurement_Request :: = SEQUENCE {
measurementDescription MeasurementDescription
}

Measurement_Response :: = SEQUENCE {
measurementResult MeasurementResult
}
Measurement_Confirm :: = SEQUENCE {
}

MeasSchedule :: = SEQUENCE {
MeasStartTime REAL,
numberOfMeasurements INTEGER,
timeBetweenMeasurements REAL
}

MeasFreq :: = SEQUENCE {
measStartFreq REAL OPTIONAL,
measEndFreq REAL OPTIONAL,
listOfChNumber SEQUENCE OF INTEGER OPTIONAL
}

MeasurementDescription :: = SEQUENCE OF SEQUENCE {
measDescr ENUMERATED {interferenceLevel ... },
measFreq MeasFreq
}

MeasurementResult :: = SEQUENCE OF SEQUENCE {
reqInfoDescr ReqInfoDescr,
reqInfoValue CHOICE {interferenceLevelValue REAL ... }
}

As shown in Table 4, the Measurement_Response message may include the interference level of the corresponding channel.

7 is a second diagram illustrating a channel measurement process according to an embodiment of the present invention.

As shown in FIG. 7, the WSO 150 according to the present invention measures the interference level of the corresponding channel periodically or aperiodically and transmits a GetMeasurement.indication primitive including the measured interference level of the channel to the CE 140 (S710).

Next, when receiving the GetMeasurement.indication primitive, the CE 140 transmits a Measurement_Response message including interference information of the corresponding channel to the CM 130 (S720), and transmits a Measurement_Confirm message in response to the Measurement_Response message from the CM 130 (S730).

8 is a view for explaining a measurement request process according to an embodiment of the present invention.

As shown in FIG. 8, the WSO 150 may send a PerformMeasurement.request primitive to the CE 140 for requesting channel information measured via the neighboring at least one WSO (S810).

In step S830, the CE 140 transmits a PerformMeasurement_Request message to the CM 130 in step S820, and receives a PerformMeasurement_Confirm message in response to the PerformMeasurement_Request message from the CM 130 in step S830.

At this time, the PerformMeasurement.request primitive and the PerformMeasurement_Request message used here are shown in the following [Table 5] and [Table 6], respectively.

PerformMeasurement.request (
listOfChNumber OPTIONAL,
measDefi OPTIONAL,
...
)
ListOfChNumber :: = SEQUENCE OF INTEGER
MeasDefi :: = SEQUENCE OF MeasDefiElement
MeasDefiElement: = ENUMERATED {
interferenceLevel
primaryDetection,
tvbdDetection,
...
}

Here, the parameter listOfChNumber represents a channel number list, interferenceLevel represents an interference level, primaryDetection represents primary user detection, and tvbdDetection represents TVBD detection.

As in [Table 5], the PerformMeasurement.request primitive can include a list of channel numbers and interference level, primary detection, TVBD detection, and so on.

PerformMeasurement_Request :: = SEQUENCE {
listOfChNumber ListOfChNumber OPTIONAL,
measDefi MeasDefi OPTIONAL
}
ListOfChNumber :: = SEQUENCE OF INTEGER
MeasDefi :: = SEQUENCE OF MeasDefiElement
MeasDefiElement: = ENUMERATED {
interferenceLevel
primaryDetection,
tvbdDetection,
...
}

PerformMeasurement_Confirm :: = SEQUENCE {
}

As in Table 6, the PerformMeasurement_Request message may include a list of channel numbers.

Upon receiving the PerformMeasurement_Request message, the CM 130 transmits a PreformMeasurement_Response message to the CE 140 (S840) to provide the measured channel information through at least one neighboring WSO, In response, the PerformMeasurement_Confirm message may be received (S850).

Next, upon receiving the PreformMeasurement_Response message, the CE 140 may transmit the PerformMeasurement.response primitive to its corresponding WSO 150 (S860).

At this time, the PerformMeasurement.response primitive and the PerformMeasurement_Response message used here are shown in the following [Table 7] and [Table 8], respectively.

PerfomMeasurement.response (
measurementReport OPTIONAL
)
MeasurementReport :: = SEQUENCE {
listOfChNumber ListOfChNumber,
measDefi MeasDefi,
measValue MeasValue
}
ListOfChNumber :: = SEQUENCE OF INTEGER
MeasDefi :: = SEQUENCE OF MeasDefiElement
MeasDefiElement: = ENUMERATED {
interferenceLevel
primaryDetection,
tvbdDetection,
...
}
MeasValue :: = SEQUENCE OF MeasValueElement
MeasValueElement :: = CHOICE {
interferenceLevelValue REAL,
primaryDetection BOOLEAN,
tvbdDetection BOOLEAN,
...
}

As in [Table 7], the PerformMeasurement.response primitive can include a list of channel numbers and interference level, primary detection, TVBD detection, and so on.

PerformMeasurement_Response :: = SEQUENCE {
measurementReport MeasurementReport OPTIONAL
}
MeasurementReport :: = SEQUENCE {
listOfChNumber ListOfChNumber,
measDefi MeasDefi,
measValue MeasValue
}

PerformMeasurement_Confirm :: = SEQUENCE {
}

As shown in Table 8, the PerformMeasurement_Response message may include a channel number list, interference level, primary detection, TVBD detection, and the like.

It is to be understood that the present invention is not limited to these embodiments, and all of the elements constituting the embodiments of the present invention described above are described as being combined or operated together. That is, within the scope of the present invention, all of the components may be selectively coupled to one or more of them. In addition, although all of the components may be implemented as one independent hardware, some or all of the components may be selectively combined to perform a part or all of the functions in one or a plurality of hardware. As shown in FIG. In addition, such a computer program may be stored in a computer-readable medium such as a USB memory, a CD disk, a flash memory, etc., and read and executed by a computer, thereby implementing embodiments of the present invention. As the storage medium of the computer program, a magnetic recording medium, an optical recording medium, a carrier wave medium, or the like may be included.

While the invention has been shown and described with reference to certain embodiments thereof, it will be apparent to those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

110: CDIS
120: Channel information DB
130: CM
140: CE
150: WSO

Claims (19)

A plurality of coexistence enablers (CEs) provided for each of a plurality of white space objects (WSOs) having at least one measurement capability capable of measuring channel information for an operating channel in use;
(CM) that receives channel information about the operation channel from at least one WSO in another neighboring group according to a result of checking the measurement capability of the corresponding WSO in cooperation with at least one CE in the group, ); And
A Coexistence Discovery and Information Server (CDIS) for registering at least one measurement capability for each of the plurality of WSOs;
Wherein the channel sharing information includes at least one of a frequency band and a frequency band. The method according to claim 1,
In the CM,
The corresponding WSO in its group has the ability to measure predetermined channel information,
And if it is determined that there is no corresponding measurement capability, channel information on the operation channel is provided from at least one WSO in another neighboring group. 3. The method of claim 2,
In the CM,
Selecting one WSO at a closest distance from at least one WSO in the neighboring other group to confirm the measurement capability of the selected WSO,
And if the selected WSO has the measurement capability, channel information on the operation channel to be measured is provided from the selected WSO. The method of claim 3,
In the CM,
Selecting one WSO at a closest distance from at least one WSO in the neighboring other group to confirm the measurement capability of the selected WSO,
And selecting another WSO among at least one WSO in the neighboring group if the selected WSO does not have the capability to measure the channel information. . The method of claim 3,
In the CM,
And determining that the measurement using at least one neighboring WSO has failed if all of the at least one WSO in the neighboring group are not capable of measuring the inter-co- . 3. The method of claim 2,
In the CM,
Identify the measurement capabilities of all of the at least one WSO in the neighboring group,
As a result of the check, channel information on the operation channel to be measured is received from all of the at least one WSO having the measurement capability,
And determining channel information on the channel based on the provided channel information. The method according to claim 6,
In the CM,
Identify the measurement capabilities of all of the at least one WSO in the neighboring group,
And if it is determined that there is no at least one WSO with the capability to measure, it is determined that the measurement using the neighboring at least one WSO has failed. The method according to claim 1,
In the CM,
Requests channel information to the corresponding WSO in cooperation with a CE in the group,
And the channel information measured by the corresponding WSO is received from the CE in response to the received channel information. The method according to claim 1,
In the CM,
And the channel information measured by the WSO in the group is provided to the mutual coexistence management system. The method according to claim 1,
The CE,
When the WSO is newly configured, it requests at least one measurement capability to the WSO to which it belongs, and is provided with the at least one measurement capability in its response,
And registering at least one measurement capability of the provided WSO in the CDIS. The mutual coexistence management system for measuring channel information between frequency sharing devices. The method according to claim 1,
The CE,
When the information of the WSO to which it belongs is changed, at least one measurement capability is provided from the corresponding WSO,
And registering at least one measurement capability of the provided WSO in the CDIS. The mutual coexistence management system for measuring channel information between frequency sharing devices. The method according to claim 1,
In the CM,
Requesting channel information from at least one neighboring WSO from the corresponding WSO in its group,
And provides channel information measured from at least one WSO belonging to another neighboring group in response to the received channel information to the corresponding WSO that requested the channel information. system. Confirming a measurement capability of a corresponding white space object (WSO) equipped with the CE interlocking with at least one CE (Coexistence Enabler) in the group;
Receiving channel information on an operation channel from at least one WSO in another neighboring group according to the result of the checking; And
Determining channel information for the operation channel based on the provided channel information;
Sharing channel information of the mutual coexistence management system. 14. The method of claim 13,
Wherein the providing and receiving comprises:
The corresponding WSO in its group has the ability to measure predetermined channel information,
And if it is determined that there is no corresponding measurement capability, channel information on the operation channel is provided from at least one WSO in another neighboring group. . 15. The method of claim 14,
Wherein the providing and receiving comprises:
Selecting one WSO at a closest distance from at least one WSO in the neighboring other group to confirm the measurement capability of the selected WSO,
And channel information on the operation channel to be measured is provided from the selected WSO if the selected WSO has the measurement capability as a result of the checking. . 16. The method of claim 15,
Wherein the providing and receiving comprises:
Selecting one WSO at a closest distance from at least one WSO in the neighboring other group to confirm the measurement capability of the selected WSO,
And selecting another WSO among at least one WSO in the neighboring other group if the selected WSO does not have a measurement capability as a result of the checking. Way. 16. The method of claim 15,
Wherein the determining comprises:
And determining that the measurement using the neighboring at least one WSO fails if all of the at least one WSO in the neighboring group are not capable of measuring the channel sharing information of the mutual coexistence management system. Way. 15. The method of claim 14,
Wherein the determining comprises:
Identify the measurement capabilities of all of the at least one WSO in the neighboring group,
As a result of the check, channel information on the operation channel to be measured is received from all of the at least one WSO having the measurement capability,
Wherein the channel information for the corresponding channel is determined based on the provided channel information. 19. The method of claim 18,
Wherein the determining comprises:
Identify the measurement capabilities of all of the at least one WSO in the neighboring group,
And determining that the measurement using the neighboring at least one WSO has failed if the at least one WSO with the measurement capability is not found as a result of the checking. Way.

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