KR101900074B1 - System and method for managing resource in communication system - Google Patents

Abstract

The present invention relates to a resource management system and method for managing a plurality of frequency resources to be shared in a communication system including a plurality of systems that do not have usage rights for a first frequency band, A TVWS DB (TVWS DB) for providing channel information of the usable frequency band for coexistence and frequency sharing of the plurality of systems in the usable frequency band, (CM) of the coexistence managers (CM) managing the plurality of systems with respect to the usable frequency band from the first frequency band and the second frequency band based on the channel classification information, And updates the channel classification of the first frequency band Board in the classification determines the operating channel of the plurality of systems.

Description

[0001] The present invention relates to a resource management system and method in a communication system,

The present invention relates to a communication system, and more particularly, to a resource management system and method for managing a plurality of frequency resources to be shared in a communication system.

BACKGROUND ART [0002] In the current communication system, active research is being conducted to provide various quality of service (QoS) services having a high transmission rate to users. In such a communication system, studies are actively conducted to provide a large-capacity service having a variety of QoS using limited resources such as frequency resources. Particularly, due to the development of radio communication technology and the emergence of new wireless communication services, there is a need to use finite frequency resources more efficiently.

In order to increase the utilization efficiency of the limited frequency resources in the communication system, it is desirable to optimize the performance of the communication system, for example, to maximize the spectrum efficiency through multiple access, coding, modulation, information compression, In addition, a frequency sharing scheme has been proposed to increase the use efficiency of frequency resources by using available frequency bands in a frequency band already in use, such as a TV band.

Here, the frequency sharing in a frequency band that can be used in a frequency band that is already in use, such as the above-described TV band, is a frequency that can be used without interfering with a primary license having incumbent usage right for the TV band It is important to detect the usable frequency band by checking whether the frequency band of the first licensee is used in the TV band. In addition, when there are a plurality of different systems to use the usable frequency band detected in the TV band, due to the difference in the communication system between the plurality of different systems, for example, the radio access system, There is a problem in coexistence to use the band.

In other words, in the present communication system, when there are a plurality of different systems to use the usable frequency band detected in the TV band as described above, the plurality of different systems can efficiently detect the usable frequency band There is no specific resource management scheme for using the frequency resources, and in particular, there is no way to efficiently use frequency resources by coexisting systems of different communication systems to use the available frequency band.

Therefore, after a usable frequency band is detected in a frequency band already in use, such as a TV band in a communication system, a plurality of different systems, for example, systems of different communication systems coexist and the detected usable frequency band is efficiently There is a need for a resource management plan for use as a resource.

It is therefore an object of the present invention to provide a resource management system and method in a communication system.

It is another object of the present invention to provide a resource management system and method for efficiently using a plurality of systems coexistence frequency bands available in a frequency band already used in a communication system.

It is another object of the present invention to provide a system and method for managing frequency resources such that a plurality of systems coexist in a communication system to use a frequency band usable in a TV band.

It is another object of the present invention to provide a system and method for managing frequency resources such that a plurality of systems in a communication system use an available frequency band through effective coexistence and frequency sharing in a usable frequency band of a TV band have.

According to an aspect of the present invention, there is provided a resource management system in a communication system including a plurality of systems that do not have usage rights for a first frequency band, A coexistence manager (CM) for managing the plurality of systems for coexistence and frequency sharing of the plurality of systems in the usable frequency band when a usable frequency band is found; A coexistence enabler (CE) for transmitting and receiving the information of the plurality of systems and information of the coexistence manager; And a Coexistence Discovery and Information Server (CDIS) supporting control of the coexistence manager for the plurality of systems; Wherein the coexistence manager includes a plurality of coexistence managers corresponding to the plurality of systems, respectively; The coexistence managers transmit and receive predetermined messages to and from the coexistence discovery and information server and the coexistence enabler to classify the first frequency band by channel classification, Lt; RTI ID = 0.0 > operating channels. ≪ / RTI >

According to another aspect of the present invention, there is provided a method for managing resources of a first frequency band in a communication system including a plurality of systems having no usage right for a first frequency band, A TVWS database (TVWS) providing channel information of the usable frequency band for coexistence and frequency sharing of the plurality of systems in the usable frequency band, Obtaining channel classification information of a plurality of coexistence managers (CMs) managing the plurality of systems for the usable frequency bands from a TV (White Space Data Base) DB; Updating a channel classification of the first frequency band based on the channel classification information; And determining an operating channel of the plurality of systems in channel classification of the first frequency band.

The present invention manages frequency resources such that a plurality of systems in a communication system use an available frequency band in a frequency band already in use, such as a TV band, through coexistence and frequency sharing, The utilization efficiency of frequency resources can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a diagram schematically illustrating the structure of a resource management system in a communication system according to an embodiment of the present invention; Fig.
2 is a diagram for explaining channel classification of a resource management system in a communication system according to an embodiment of the present invention;
FIGS. 3 to 8 are diagrams schematically illustrating a channel classification procedure of a resource management system in a communication system according to an embodiment of the present invention; FIG.
9 is a diagram schematically illustrating a channel classification update procedure of a resource management system in a communication system according to another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, only parts necessary for understanding the operation according to the present invention will be described, and the description of other parts will be omitted so as not to disturb the gist of the present invention.

The present invention can be applied to a frequency band that is already in use, such as in a communication system, such as a cognitive radio (CR) system, an IEEE 802.19 based system, or an IEEE 802.22 based system, A resource management system and method for detecting and using a usable frequency band, e.g., an unused frequency band (WS), is proposed. Although the CR system and the IEEE 802.19 and IEEE 802.22 based systems are described as an example in the embodiment of the present invention, the resource management scheme proposed in the present invention can be applied to other communication systems.

In addition, the embodiment of the present invention proposes a resource management system and method for efficiently using a frequency band usable in a TV band by coexistence of a plurality of different systems in a communication system. Here, in the embodiment of the present invention, each object of the resource management system for sharing a frequency band usable in the communication system mutually coexists and a plurality of different systems, in particular, different communication systems, for example, So as to share a usable frequency band in a frequency band already in use as in the TV band, thereby improving the use efficiency of the frequency resource.

That is, in the embodiment of the present invention, a resource management system for coexistence and frequency sharing among a plurality of different systems in a communication system shares a usable frequency band to improve usage efficiency of limited frequency resources. Herein, in the embodiment of the present invention, a frequency in a usable frequency band is shared in a frequency band that is already in use, such as a TV band, and a primary license having an exclusive use right for the TV band Since it is necessary to use the usable frequency band without interference, it is possible to detect a usable frequency band by checking whether the frequency band of the first licensee is used in the TV band, and to use the usable frequency band detected in the TV band A plurality of different systems selecting and using an operating channel in the detected usable frequency band through coexistence and frequency sharing. In other words, in the embodiment of the present invention, a resource management system for coexistence and frequency sharing among a plurality of different systems in a communication system selects an operation channel in WS for effective coexistence, To effectively select a channel, the available channels in the WS are classified and allocated channels.

Here, the resource management system performs a message transmission / reception procedure for efficient coexistence and frequency sharing among a plurality of systems different from each other in a band available in the TV band, i.e. TVWS. In other words, the resource management system transmits and receives messages among the objects of the resource management system for effective coexistence and frequency sharing of the plurality of systems using the TVWS, in particular, registration, coexistence information collection coexistence information gathering, coexistence decision making, reconfiguration, measurement, and event, so that the coexistence and frequency sharing efficiency of the plurality of systems in the TVWS .

That is, in the resource management system according to the embodiment of the present invention for effective coexistence and frequency sharing of a plurality of systems in the TVWS, a registration procedure and a message in the registration procedure are defined, a coexistence information gathering procedure, and a message in the coexistence information collection procedure. In the resource management system, a message in the coexistence decision making procedure and the coexistence decision making procedure is defined, a reconfiguration procedure and a message in the reconfiguration procedure are defined, and a management procedure a measurement procedure, a message in the management procedure, an event procedure, and a message in the event procedure, respectively. That is, for effective coexistence and frequency sharing in the TVWS of the plurality of systems, each defined message is transmitted and received between the respective objects of the resource management system as described above to perform each of the defined procedures, Thereby improving the coexistence and frequency sharing efficiency of the plurality of systems. Hereinafter, the resource management system in the communication system according to the embodiment of the present invention will be described in more detail with reference to FIG.

1 is a diagram schematically illustrating a structure of a resource management system in a communication system according to an embodiment of the present invention.

1, when a plurality of systems having different usable frequency bands, i.e., TVWS, are used by a plurality of systems, such as a TV band, For example, a TV band device (TVBD) 1 140 and a TVBD 2 160, which are intended to use the usable frequency band through sharing, A CM1 120 and a CM2 130 for managing the TVBDs 140 and 160 to improve the frequency sharing efficiency between the CMDs 140 and 160, A coexistence enabler (CE) is included in the TVBDs 140 and 160, or independently located, and serves as a channel between the TVBDs 140 and 160 and the CMs 120 and 130. [ ) For example, CE1 140 and CE2 170, a server supporting the control of the TVBs 140 and 160 of the CMs 120 and 130, for example, a coexistence discovery and information server (CDIS) And a TVWS DB (TVWS DB) 180 for providing channel information for the TVWS, which can be used in the TV band, do. Here, the resource management system includes CE, CM, CDIS, and TVWS DB as objects for coexistence and frequency sharing in TVWS of a plurality of systems, i.e., TVBDs.

As described above, the TVBDs 140 and 160 may be configured so that a primary licensee (hereinafter, referred to as a 'Primary System') having a preferential usage right for the TV band already has a predetermined When a frequency band is not used, another user (hereinafter, referred to as a 'secondary system') not having a preferential right to use the TV band is allowed to use a frequency band capable of using a predetermined frequency band in the TV band Quot; refers to a plurality of different systems, that is, sub-systems devices, which are to be detected and used in a band. Here, the TVBDs 140 and 160 share the predetermined frequency band through coexistence and frequency sharing in order to more efficiently use the limited frequency resources. That is, the TVBDs 140 and 160 receive channels through the TVWS and transmit and receive data.

As described above, the CEs 150 and 160 are independently located in the TVBDs 140 and 160, and transmit and receive information of the TVBDs 140 and 160 and information of the CMs 120 and 130, respectively. Although the CEs 150 and 160 are independently provided in the TVBDs 140 and 160 for convenience of description, the CEs 150 and 160 may include the TVBDs 140 and 160 Or may be included in the CMs 120 and 130. [

The CEs 150 and 160 may transmit context information related to the corresponding TVBDs 140 and 160 requested by the CMs 120 and 130 such as the radio access scheme, A threshold, and a position, from the TVBDs 140 and 160, and transmits the extracted information to the CMs 120 and 130. That is, the CEs 150 and 160 acquire communication-related information of each system as context information for different subsystems, and transmit the information to the CMs 120 and 130.

The CEs 150 and 160 receive a request of the CMs 120 and 130 for managing the TVBDs 140 and 160, for example, the context information and the configuration of the TVBDs 140 and 160 Updates the context information of the TVBDs 140 and 160 according to the request, and reconfigures or reconfigures the configuration of the TVBDs 140 and 160. In other words, the CEs 150 and 160 receive the changed information of the context information, that is, the event information of the TVBDs 140 and 160 in response to the context information of the TVBDs 140 and 160, And updates the context information of the TVBDs 140 and 160. The CEs 150 and 160 may also receive a component reset of the TVBDs 140 and 160 in response to a request for a configuration of the TVBDs 140 and 160 and may configure the components of the TVBDs 140 and 160 The element is reset, i.e., reconstructed.

The CMs 120 and 130 determine an operation frequency allocation, a transmission power allocation, and a transmission time allocation in order to improve frequency sharing efficiency between the TVBDs 140 and 160. In other words, the CMs 120 and 130 may be connected to the TVBs 140 and 160 in the available frequency band to improve the frequency sharing efficiency between the TVBDs 140 and 160 for the available frequency bands in the TV band described above. Performs operation frequency allocation, transmission power allocation, and transmission time allocation.

In order to further improve the frequency sharing efficiency between the TVBDs 140 and 160, the CMs 120 and 130 transmit and receive information to and from CMs of TVBDs that do not correspond to themselves, for example, neighboring CMs Transmits context information and event information of TVBDs, and performs operation frequency allocation, transmission power allocation, and transmission time allocation of the corresponding TVBD in the usable frequency band. At this time, the CMs 120 and 130 directly transmit and receive context information and event information of TVBDs that do not correspond to the CMs 120 and 130 with other CMs (for example, adjacent CMs) And acquires them. In addition, the CMs 120 and 130 may acquire information on spectrum use in the main system, that is, channel information about available channels in the TV band, through an external database, for example, the TVWS DB 180, To reset the components of their corresponding TVBDs.

The CDIS 110 supports control operations of the CMs 120 and 130 for frequency sharing of the TVBDs 140 and 160 with respect to frequency bands available in the TV band, as described above. That is, the CDIS 110 receives and stores the context information and the event information of the TVBDs 140 and 160 from the CMs 120 and 130. The CDIS 110 receives the context information and the event information of the TVBDs 140 and 160 from the CMs 120 and 130, To the CMs (120 and 130). In addition, the CDIS 110 acquires and stores information on spectrum use in the main system, that is, channel information on available channels in the TV band, through an external database, for example, the TVWS DB 180.

The TVWS DB 180 provides channel information on a channel available in the TVWS, that is, shared channel information, to the CMs 120 and 130. The channel information is registered in the TVWS DB 180, TVBD < / RTI >

The resource management system in the communication system according to this embodiment of the present invention uses a frequency band that can be used in a frequency band already used in a main system such as a TV band by sharing the sub-systems, that is, coexistence of the TVBDs 140 and 160 The CDIS 110, the CMs 120 and 130, and the CEs 140 and 160 for frequency sharing and frequency sharing. As described above, the TVBDs 140 and 160 are sub-systems devices for sharing and using the available frequency band. The TVBDs 140 and 160 include a base station (BS), an access point An access point (AP), a service access point (SAP), a terminal, and the like. In addition, the sub systems may be a plurality of systems different from each other in sharing available frequency bands as described above, and may be systems of different communication systems, such as an IEEE 802.19-based system and an IEEE 802.22-based system .

Also, in the communication system according to the embodiment of the present invention, for the coexistence and frequency sharing of the TVBDs 140 and 160 with respect to the usable frequency band in the frequency band already in use, For example, for efficient coexistence and frequency sharing of a plurality of systems, e.g., the TVBDs 140 and 160, to enable the plurality of systems in the TVWS to effectively coexist and improve frequency utilization efficiency through frequency sharing.

At this time, the resource management system is operated in a management mode and an autonomous mode (or an information mode), and the setting and the configuration of the frequency sharing device indicated by the CM in the management mode, i.e., TVBD, And the CE is made to make coexistence and frequency sharing decisions on the basis of the coexistence and frequency sharing related information provided by the CM in the autonomous mode and the coexistence and frequency sharing decision is reset to the setting and configuration of the TVBD To the TBVD. In addition, the resource management system is operated in a centralized topology and a distributed topology, and in the centralized topology, a plurality of CMs are provided with a plurality of A slave CM is connected, and the slave CMs are under the control of the master CM for coexistence and frequency sharing among the TVBDs. In the distributed topology, a plurality of CMs perform coexistence and frequency sharing among TVBDs through negotiation between any one CM and adjacent CMs of the one CM. Hereinafter, with reference to FIG. 2, description will be given in more detail of classification of usable channels in TVWS for coexistence and frequency sharing in TVWS among TVBDs of the resource management system in the communication system according to the embodiment of the present invention .

2 is a diagram for explaining channel classification of a resource management system in a communication system according to an embodiment of the present invention. Herein, since the channel allocation is determined according to the type of TVBDs and the use of channels in adjacent CMs in the TVWS, the resource management system determines channel allocation as shown in FIG. 2 for effective mutual coexistence and frequency sharing among a plurality of systems And performs channel classification of the TVWS for the TV band.

Referring to FIG. 2, the CM of the resource management system obtains channel information of a channel available in the TV band from the TVWS DB, that is, TVWS, and based on the channel information, The TV channels 200 of the TV band are transmitted to the TV channels 200 through the unauthorized channel 210, the available channel 220, the conditional available channel 230, the allowance channel 240, the operation channel 225, the coexistence channel 227, A protection channel 242, and an unclassified channel. Here, the above-described channel classification in the TV channel of the CM is an example, and channels in the TV channel are classified into various forms according to coexistence and frequency sharing of a plurality of systems in the TVWS.

The operation channel 225 may be one system sharing the TV channel 200 through the coexistence and frequency sharing in the TV channel 200, that is, a TVBD or a plurality of systems using the same radio access scheme, Frequency resources allocated to the sub-frequency resources. Here, the sub-frequency resource may be represented by a channel in a first frequency band, that is, a partial frequency band in the entire frequency band that can be used by the main system. Also, the operation channel 225 is allocated in the available channel 220 of the TV channel 200 and the conditionally available channel 230.

The coexistence channel 227 refers to a set of sub-frequency resources allocated to two or more systems, that is, TVBDs using the same or different radio access schemes in the TV channel 200, 200). ≪ / RTI >

The available channel 220 is used in the TV channel 200 either locally or temporally to satisfy a channel quality of a predefined level that is not used by the primary license system or main system, Means a set of sub-frequency resources allocable to at least one system, i.e., TVBD, through frequency sharing. That is, the available channel 220 means a channel that can be used by a plurality of systems, that is, TVBDs in the TV channel 200 through coexistence and frequency sharing, and is allocated in the TV channel 200.

The protection channel 242 means a set of sub-frequency resources that can not be allocated to a plurality of systems, i.e., TVBDs, used by the primary license system or main system in the TV channel 200, Means a channel that can not be used in a plurality of systems.

The conditional usable channel 230, that is, the use restricted channel, refers to a set of sub-frequency resources that can be limitedly allocated to a plurality of systems according to regulation related to a frequency band in the TV channel 200 do. For example, a sub-frequency resource that is used by the main system to allow adjacent sub-frequency resources to be allocated to the plurality of systems through coexistence and frequency sharing is included in the conditional available channel 230. [ Here, the adjacent sub-frequency resource of the Fth sub-frequency resource is defined as an F + 1 sub-frequency resource or an F + 2 sub-frequency resource. At this time, the sub-frequency resource included in the conditional available channel 230 refers to a frequency resource that is not allocated to a plurality of systems, i.e., TVBDs. The sub frequency resource of the conditionally available channel 230 may use a lower power level that is distinct from the power level used by the main system in the adjacent sub frequency resource of the corresponding frequency band, As assigned to systems, they are limitedly assigned to the plurality of systems.

In the TV channel 200, the deny channel 210 is a sub-frequency resource in which the use of a plurality of systems is prohibited by a regulation related to a frequency band, that is, Means a set of sub-frequency resources.

The unclassified channel 244 may be used in the TV channel 200 to provide the operation channel 225, the coexistence channel 227, the available channel 220, the conditional available channel 230, the protection channel 242, And a set of sub-frequency resources not corresponding to the channel classification to the deny channel 210. [ That is, the unclassified channel 244 indicates a set of sub-frequency resources for which the state of the corresponding sub-frequency resource is not confirmed in the TV channel 200.

The CM of the frequency management system according to the embodiment of the present invention classifies the channel of the TV channel 200. For the channel classification, the CM includes a TVWS DB, a CDIS, an adjacent CM, And TVBDs. Hereinafter, the channel classification of the resource management system in the communication system according to the embodiment of the present invention will be described in more detail with reference to FIG. 3 to FIG.

3 is a diagram schematically illustrating a channel classification procedure of a resource management system in a communication system according to an embodiment of the present invention. Here, FIG. 3 is a diagram schematically illustrating a channel classification procedure by a CM of a resource management system in a communication system according to an embodiment of the present invention.

3, in order to classify channels for coexistence and frequency sharing in the TVWS, the CM 304 transmits channel information to the CEW registered in the TVWS DB 302 having the channel information of the TVWS or the CM itself request. Hereinafter, the convenience of the description will be mainly described with reference to the case where the CM 304 requests the TVWS DB 302. When the CM 304 requests channel information to the registered CE, The operation will be described in detail here.

That is, the CM 304 transmits a TVWS DB channel classification request (TVWSDB_CC_REQ: TVWSDB_CC_REQ) to the channel information stored in the TVWS DB 302, for example, Message to the TVWS DB 302 (step 310).

Here, the TVWSDB_CC_REQ message is a message requesting the TVWS DB 302 to allow channel list in the TVWS for channel classification in the TVWS. Also, the TVWSDB_CC_REQ message is used in a centralized topology, a distributed topology, and an autonomous mode of the resource management system. The TVWSDB_CC_REQ message is used when the CM 304 requests a CE (not shown) as well as the TVWS DB 302 in the TVWS. In addition, the contents of the TVWSDB_CC_REQ message, i.e., the header and the payload of the TVWSDB_CC_REQ message, can be represented as shown in Table 1 below.

Header Name Data Type Description SourceID CM ID Source identifier DestinationID TVWS DB ID / CE ID Destination identifier Payload Name Data Type Description TVWSDBInformationIDs COEX_TVWSDB_INFO_IDS TVWS DB information IDs
- Allowed TVWS channel list
- Channel use constraint

In response to the TVWSDB_CC_REQ message, the CM 304 transmits a TVWS DB Channel Classification Response (TVWSDB_CC_RSP: TVWS DB Channel Classification) including channel information stored in the TVWS DB 302, for example, (Hereinafter, referred to as 'TVWSDB_CC_RSP') message from the TVWS DB 302 (step 312).

Here, the TVWSDB_CC_RSP message is a response message of the TVWSDB_CC_REQ message for requesting channel information in the TVWS, for example, an allowed channel list in the TVWS, for channel classification in the TVWS, Is a message for providing the CM 304 with channel information in the TVWS, for example, an allowable channel list in the TVWS. The TVWSDB_CC_RSP message is used in the centralized topology, the distributed topology, and the autonomous mode of the resource management system. In addition, the contents of the TVWSDB_CC_RSP message, i.e., the header and the payload of the TVWSDB_CC_RSP message, can be represented as shown in Table 2 below.

Header Name Data Type Description SourceID TVWS DB ID / CE ID Source identifier DestinationID CM ID Destination identifier Payload Name Data Type Description NeighborCETVWSDBChList COEX_TVBD_TVWS TVBD TVWS DB channel list, including
- Allowed TVWS channel list
- Channel use constraint

The CM 304 receiving the TVWSDB_CC_RSP message including the channel information in the TVWS, for example, the allowed channel list in the TVWS from the TVWS DB 302 or the CE, (Step 314). Also, the CM 304 classifies the TVWS into an allowance channel and a non-allowance channel. At this time, the CM 304 classifies the TVWS into an allow channel and an unauthorized channel for all the CEs registered to the CM 304 (step 316).

Next, the CM 304 requests channel classification information of the adjacent CM to the CDIS 306 having channel classification information of the CM adjacent to the TVWS in the TVWS. That is, the CM 304 transmits a CDIS Channel Classification Request (CDIS_CC_REQ) message requesting channel classification information of an adjacent CM stored in the CDIS 306 to the CDIS 306 (Step 318).

Here, the CDIS_CC_REQ message is a message for requesting channel classification information of an adjacent CM from the TVWS to the CDIS 306 for channel classification in the TVWS. Also, the CDIS_CC_REQ message is used in a centralized topology, a distributed topology, and an autonomous mode of the resource management system. In addition, the contents of the CDIS_CC_REQ message, i.e., the header and the payload of the CDIS_CC_REQ message, can be expressed as shown in Table 3 below.

Header Name Data Type Description SourceID CM ID Source identifier DestinationID CDIS ID Destination identifier Payload Name Data Type Description NeighborCMID STRING Neighbor CM ID NeighborCEIDList SEQUENCE OF STRING Neighbor CE ID list

In response to the CDIS_CC_REQ message, the CM 304 transmits a CDIS Channel Classification Response (CDIS_CC_RSP: hereinafter referred to as 'CDIS_CC_RSP') including channel classification information of the adjacent CM in the TVWS stored in the CDIS 306 Message from the CDIS 306 (step 319).

Herein, the CDIS_CC_RSP message is a response message of the CDIS_CC_REQ message requesting channel classification information of a neighboring CM in the TVWS by channel classification of an adjacent CM in the TVWS, And provides the CM 304 with classification information. The CDIS_CC_RSP message is used in the centralized topology, distributed topology, and autonomous mode of the resource management system. In addition, the contents of the CDIS_CC_RSP message, i.e., the header and the payload of the CDIS_CI_RSP message,

Header Name Data Type Description SourceID CDIS ID Source identifier DestinationID CM ID Destination identifier Payload Name Data Type Description NeighborCMID SEQUENCE Neighbor CM ID NeighborCEIDList SEQUENCE OF STRING Neighbor CE ID list The message contents below are repeated for each neighbor CE NeighborCEID STRING Neighbor CE ID NeighborCEChannelClassificationList COEX_CH_CLASSIFICATION Channel classification of neighbor CE

In step 320, the CM 304 receives the CDIS_CC_RSP message including the channel classification information of the adjacent CM from the CDIS 306 in the TVWS, and obtains the channel classification information of the adjacent CM from the TVWS. Then, in step 322, the CM 304 updates the allowed channel and the unallowed channel classified in the TVWS using the channel classification information of the adjacent CM in the TVWS, and updates the channel classification in the TVWS. Hereinafter, channel classification of the resource management system in the communication system according to another embodiment of the present invention will be described in more detail with reference to FIG.

4 is a diagram schematically illustrating a channel classification procedure of a resource management system in a communication system according to another embodiment of the present invention. 4 is a diagram schematically illustrating a channel classification procedure by a CM of a resource management system in a communication system according to another embodiment of the present invention.

Referring to FIG. 4, in order to classify channels for coexistence and frequency sharing in the TVWS, the CM 404 requests channel information from the TVWS DB 402 having the channel information of the TVWS. That is, the CM 404 transmits a CM_AvailableChannels_Request (CM_AvailableChannels_Request) requesting the channel information stored in the TVWS DB 402, for example, the available channel list of the CM 404 in the TVWS Message to the TVWS DB 402 (step 410).

Here, the CM_AvailableChannels_Request message is a message requesting the TVWS DB 402 for a channel list available to the CM 404 in the TVWS for channel classification in the TVWS. The contents of the CM_AvailableChannels_Request message, that is, the header and the payload of the CM_AvailableChannels_Request message can be shown in Table 5, and the data type of the CM_AvailableChannels_Request message can be shown in Table 6.

Header Information element Data type Description sourceIdentifier = CM_ID CX_ID Source identifier destinationIdentifier = TVWSDB_ID CX_ID Destination identifier ACKPolicy BOOLEAN Request to send an acknowledgment of reception Payload Information element Data type Description requestedTimeStamp TIME Time of the request deviceFCCID FCC ID of the TVBD network or device deviceSN Serial number of the TVBD network or device deviceLocation DeviceLocation Location of the TVBD network or device antennaHeight REAL Antenna height of the TVBD network or device networkType NetworkType E.g., fixed mode 2 ...
CX_ID :: = ENUMERATED {
CE_ID,
CM_ID,
CDIS_ID,
TVWSDB_ID
}

DeviceLocation :: = SEQUENCE {
coordinateX REAL,
coordinateY REAL,
coordinateZ REAL
}

NetworkType :: = ENUMERATED {
fixed,
mode2,
...
}

delete

In response to the CM_AvailableChannels_Request message, the CM 44 transmits channel information stored in the TVWS DB 42, for example, an available channel response including an available channel list of the CM 402 in the TVWS (Hereinafter, referred to as 'AvailableChannels_Response') message from the TVWS DB 402 (step 412).

Here, the AvailableChannels_Response message is a response message of the CM_AvailableChannels_Request message requesting a channel list that the CM 404 can use in the TVWS for channel classification in the TVWS, and the TVWS DB 402 transmits, And provides usable channel information of the CM 404, that is, a usable channel list to the CM 404. Table 7 shows the contents of the TAvailableChannels_Response message, i.e., the header and payload of the AvailableChannels_Response message, and the data type of the AvailableChannels_Response message may be as shown in Table 8. [

Header Information element Data type Description sourceIdentifier = TVWSDB_ID CX_ID Source identifier destinationIdentifier = CM_ID CX_ID Destination identifier ACKPolicy BOOLEAN Request to send an acknowledgment of reception Payload Information element Data type Description listOfAllowedTVWSChNumber ListOfAllowedTVWSChNumber
OPTIONAL Allowed TVWS channel number list constOfChUses ConstOfChUses OPTIONAL Channel user constraint Note: Information elements are repeated for each available frequency. startFreq REAL OPTIONAL Start frequency stopFreq REAL OPTIONAL Stop frequency txPowerLimit REAL OPTIONAL Transmit power limit aggregatedInterference
ControlParameters AggregatedInterference ControlParameters Aggregated interference control parameters
ListOfAllowedTVWSChNumber :: = SEQUENCE OF INTEGER

ConstOfChUseID :: = ENUMERATED {
regulationMaxTxPower,
regulationMaxAntGain,
regulationMaxAntHeight,
regulationTVDBUpdateTime,
OutOfBandEmissionLimit,
...
}

ConstOfChUseValue :: = CHOICE {
regulationMaxTxPower REAL,
regulationMaxAntMaxGain REAL,
regulationAntMaxHeight REAL,
regulationTVDBUpdateTime REAL,
OutOfBandEmissionLimit REAL,
...
}

ConstOfChUse:: = SEQUENCE {
constOfChUseID ConstOfChUseID,
constOfChUseValue ConstOfChUseValue
}

ConstOfChUses :: = SEQUENCE OF ConstOfChUse

AggregatedInterferenceControlParameters :: = SEQUENCE {
ReferencePointID INTEGER,
Geolocation ReferencePointGeolocation,
ACS REAL,
Antenna height REAL,
Antenna gain REAL,
Protection ratio REAL,
...
}

ReferencePointGeolocation :: = ENUMERATED {
Latitude REAL,
Longitude REAL,
Altitude REAL,
...
}

delete

The CM 404, which has received the AvailableChannels_Response message including the usable channel list of the CM 404 in the TVWS from the TVWS DB 402 in the channel information usable in the TVWS, In step 414, channel classification is performed in the TVWS for all CEs registered to the CM 404 using the channel information.

Next, the CM 404 requests channel classification information of the adjacent CM 406 itself to an adjacent CM 406 having channel classification information of the CM adjacent to the TV 404 in the TVWS. That is, the CM 404 transmits a CM_NeighborChannelClassification_Request (CM_NeighborChannelClassification_Request) message requesting channel classification information of the adjacent CM 406 to the adjacent CM 406 (Step 416).

Here, the CM_NeighborChannelClassification_Request message is a message requesting channel classification information of the adjacent CM 406 from the TVWS to the neighboring CM 406 for channel classification in the TVWS. The contents of the CM_NeighborChannelClassification_Request message, i.e., the header and payload of the CM_NeighborChannelClassification_Request message may be expressed as shown in Table 9, and the data type of the CM_NeighborChannelClassification_Request message may be expressed as shown in Table 10 below.

Header Information element Data type Description sourceIdentifier = CM_ID CX_ID Source identifier destinationIdentifier = CDIS_ID CX_ID Destination identifier ACKPolicy BOOLEAN Request to send an acknowledgment of reception Payload Information element Data type Description neighborCMID CX_ID Neighbor CM ID listOfNeighborCEID ListOfNeighborCEID Neighbor CE ID list

ListOfNeighborCEID :: = SEQUENCE OF CX_ID

In response to the CM_NeighborChannelClassification_Request message, the CM 404 transmits a CM_NeighborChannelClassification_Response (CM_NeighborChannelClassification_Response) message including the channel classification information of the adjacent CM 406 to the neighbor From the CM 406 (step 418).

Here, the CM_NeighborChannelClassification_Response message is a response message of the CM_NeighborChannelClassification_Request message requesting channel classification information of the neighboring CM 406 in the TVWS by channel classification of the adjacent CM in the TVWS, And provides the channel classification information of the adjacent CM 406 itself to the CM 404. The contents of the CM_NeighborChannelClassification_Response message, i.e., the header and the payload of the CM_NeighborChannelClassification_Response message can be shown in Table 11, and the data type of the CM_NeighborChannelClassification_Response message can be shown in Table 12. [

Header Information element Data type Description sourceIdentifier = CDIS_ID CX_ID Source identifier destinationIdentifier = CM_ID CX_ID Destination identifier ACKPolicy BOOLEAN Request to send an acknowledgment of reception Payload Information element Data type Description neighborCMID CX_ID Neighbor CM ID Note: Information elements below are repeated for each neighbor TVBD network or device. neighborCEID CX_ID Neighbor CE ID chClassInfo ChClassInfo Channel classification information of neighbor CE

OperatingChannelInfo :: = SEQUENCE {
operatingChannelNumber INTEGER,
listOfNetworkID SEQUENCE OF NetworkID,
...
}

ChClassInfo :: = SEQUENCE {
availableChannelList SEQUENCE OF INTEGER,
restrictedChannelList SEQUENCE OF INTEGER,
protectedChannelList SEQUENCE OF INTEGER,
unclassifiedChannelList SEQUENCE OF INTEGER,
operatingChannelList SEQUENCE OF OperatingChannelInfo,
coexistenceChannelList SEQUENCE OF OperatingChannelInfo,
...

}

NetworkID :: = ENUMERATED {
BSSID,
...
}

The CM 404 receiving the CM_NeighborChannelClassification_Response message including the channel classification information of the adjacent CM 406 in the TVWS from the adjacent CM 406 uses the channel classification information of the adjacent CM 406 in the TVWS The channel classification in the TVWS is updated (step 420). Hereinafter, the channel classification of the resource management system in the communication system according to another embodiment of the present invention will be described in more detail with reference to FIG.

5 is a diagram schematically illustrating a channel classification procedure of a resource management system in a communication system according to another embodiment of the present invention. Here, FIG. 5 is a diagram schematically illustrating a channel classification procedure by a CM of a resource management system in a communication system according to another embodiment of the present invention.

5, in order to classify channels for coexistence and frequency sharing in the TVWS, the CM 502 requests the channel classification information of another CM 504 itself to any other CM 504 in the TVWS . That is, the CM 502 transmits a CM_ChannelClassification_Request (CM_ChannelClassification_Request) message requesting channel classification information of the other CM 504 to the other CM 504 Step 510).

Here, the CM_ChannelClassification_Request message is a message requesting channel classification information of another CM 504 from the TVWS to the corresponding other CM 504 for channel classification in the TVWS. In addition, the contents of the CM_ChannelClassification_Request message, i.e., the header and the payload of the CM_ChannelClassification_Request message, can be represented as shown in Table 13.

Header Information element Data type Description sourceIdentifier = CM_ID CX_ID Source identifier destinationIdentifier = CM_ID CX_ID Destination identifier ACKPolicy BOOLEAN Request to send an acknowledgment of reception Payload Information element Data type Description listOfNetworkID SEQUENCE OF NetworkID Neighbor network ID list

In response to the CM_ChannelClassification_Request message, the CM 502 transmits a CM_ChannelClassification_Response (CM_ChannelClassification_Response) message including the channel classification information of the other CM 504 to the other CM (Step 512).

Here, the CM_ChannelClassification_Response message is a response message of the CM_ChannelClassification_Request message requesting channel classification information of another CM 504 in the TVWS by channel classification of another CM 504 in the TVWS, And provides the CM 502 with the channel classification information of another CM 504 in the TVWS. The contents of the CM_ChannelClassification_Response message, that is, the header and the payload of the CM_ChannelClassification_Response message, can be shown in Table 14.

Header Information element Data type Description sourceIdentifier = CM_ID CX_ID Source identifier destinationIdentifier = CM_ID CX_ID Destination identifier ACKPolicy BOOLEAN Request to send an acknowledgment of reception Payload Information element Data type Description Note: Information elements below are repeated for each neighbor TVBD network or device. networkID NetworkID Neighbor network ID chClassInfo ChClassInfo Channel classification information of neighbor CE

Upon receiving the CM_ChannelClassification_Response message including the channel classification information of the other CM 504 from the other CM 504, the CM 502 transmits the CM_ChannelClassification_Response message to the TVWS 504 using the channel classification information of the other CM 504 in the TVWS. And performs channel classification and channel classification update. Hereinafter, the channel classification of the resource management system in the communication system according to another embodiment of the present invention will be described in more detail with reference to FIG.

6 is a diagram schematically illustrating a channel classification procedure of a resource management system in a communication system according to another embodiment of the present invention. Here, FIG. 6 is a diagram schematically illustrating a channel classification procedure by the CE of the resource management system in the communication system according to another embodiment of the present invention.

6, in order to classify channels for coexistence and frequency sharing in the TVWS, the CE 602 transmits a channel classification of the CM 604 in the TVWS to the CM 604 in which the CE 602 itself is registered. Request information. That is, the CE 602 transmits a Channel Classification_Request (ChannelClassification_Request) message requesting the channel classification information of the CM 604 to the CM 604 (Step 610) .

Here, the ChannelClassification_Request message is a message for requesting the corresponding CM 604 of the channel classification information of the CM 604 to which the CE 602 is registered in the TVWS for channel classification in the TVWS. In addition, the contents of the ChannelClassification_Request message, i.e., the header and the payload of the ChannelClassification_Request message,

Header Information element Data type Description sourceIdentifier = CE_ID or CDIS_ID CX_ID Source identifier destinationIdentifier = CM_ID CX_ID Destination identifier ACKPolicy BOOLEAN Request to send an acknowledgment of reception Payload Information element Data type Description listOfNetworkID SEQUENCE OF NetworkID Network ID list

In response to the ChannelClassification_Request message, the CE 602 transmits a Channel Classification_Response (ChannelClassification_Response) message including the channel classification information of the CM 604 to the CM 604, (Step 612).

Here, the ChannelClassification_Response message is a response message of the Channel Classification_Request message requesting channel classification information of the CM 604 in the TVWS by channel classification of the CM 604 in the TVWS, And provides the channel classification information of the CM 604 to the CE 602. The content of the ChannelClassification_Response message, that is, the header and the payload of the ChannelClassification_Response message, can be shown in Table 16.

Header Information element Data type Description sourceIdentifier = CM_ID CX_ID Source identifier destinationIdentifier = CE_ID or CDIS_ID CX_ID Destination identifier ACKPolicy BOOLEAN Request to send an acknowledgment of reception Payload Information element Data type Description Note: Information elements below are repeated for each TVBD network or device. networkID NetworkID Network ID chClassInfo ChClassInfo Channel classification information of the CE

Upon receiving the Channel Classification_Response message including the channel classification information of the CM 604 from the CM 604, the CE 602 transmits the Channel Classification_Response message including the Channel Classification_Response message to the channel 604 in the TVWS using the channel classification information of the CM 604 in the TVWS. Classification and channel classification update. Hereinafter, channel classification of the resource management system in the communication system according to another embodiment of the present invention will be described in more detail with reference to FIG.

7 is a diagram schematically illustrating a channel classification procedure of a resource management system in a communication system according to another embodiment of the present invention. Here, FIG. 7 is a diagram schematically illustrating a channel classification procedure by CDIS of a resource management system in a communication system according to another embodiment of the present invention.

7, in order to classify channels for coexistence and frequency sharing in the TVWS, the CDIS 704 updates channel classification information of CMs adjacent to the CM 702 registered in the CDIS 704 itself (710 And notifies the CM 702 of the channel classification information of the CMs adjacent to the corresponding CM 702, in particular, the channel classification information of the updated adjacent CMs.

That is, the CDIS 704 transmits a CDIS_NeighborChannelClassification_Announcement (CDIS_NeighborChannelClassification_Announcement) message, which notifies the CM 702 of the channel classification information of the CMs adjacent to the CM 702, To the CM 702 (step 712).

Here, the CDIS_NeighborChannelClassification_Announcement message is a message for providing channel classification information of CMs adjacent to the CM 702 to an arbitrary CM 702 registered in the CDIS 704, The channel classification information of the updated adjacent CMs is included and is transmitted to the corresponding CM 702. The contents of the CDIS_NeighborChannelClassification_Announcement message, that is, the header and the payload of the CDIS_NeighborChannelClassification_Announcement message, can be shown in Table 17.

Header Information element Data type Description sourceIdentifier = CDIS_ID CX_ID Source identifier destinationIdentifier = CM_ID CX_ID Destination identifier ACKPolicy BOOLEAN Request to send an acknowledgment of reception Payload Information element Data type Description Note: Information elements below are repeated for each neighbor CM. neighborCMID CX_ID Neighbor CM ID Note: Information elements below are repeated for each neighbor TVBD network or device. neighborCEID CX_ID Neighbor CE ID chClassInfo ChClassInfo Channel classification information of neighbor CE

Upon receiving the CDIS_NeighborChannelClassification_Announcement message including the channel classification information of the adjacent CMs from the CDIS 704, the CM 702 updates the channel classification in the TVWS using the channel classification information of the adjacent CMs in the TVWS (Step 714). Hereinafter, channel classification of the resource management system in the communication system according to another embodiment of the present invention will be described in more detail with reference to FIG.

8 is a diagram schematically illustrating a channel classification procedure of a resource management system in a communication system according to another embodiment of the present invention. Here, FIG. 8 is a diagram schematically illustrating a channel classification procedure by CDIS of a resource management system in a communication system according to another embodiment of the present invention.

8, in order to classify channels for coexistence and frequency sharing in the TVWS, the CDIS 804 instructs the CM 802 registered in the CDIS 804 itself to classify the channels of the CM 802 in the TVWS Request information. That is, the CDIS 804 transmits a Channel Classification_Request message requesting channel classification information of the CM 802 to the CM 802 (step 810).

Here, the ChannelClassification_Request message is a message requesting the corresponding CM 802 from the TVWS to channel classification information of the CM 802 registered in the CDIS 804 for channel classification in the TVWS. Table 15 shows the contents of the ChannelClassification_Request message, i.e., the header and payload of the ChannelClassification_Request message.

In step 812, the CDIS 804 receives a Channel Classification_Response message including channel classification information of the CM 802 from the CM 802 in response to the ChannelClassification_Request message.

Here, the ChannelClassification_Response message is a response message of the Channel Classification_Request message requesting channel classification information of the CM 802 in the TVWS according to channel classification of the CM 802 in the TVWS, And provides the channel classification information of the CM 802 to the CDIS 804. Table 16 shows the contents of the ChannelClassification_Response message, i.e., the header and payload of the ChannelClassification_Response message.

Upon receiving the Channel Classification_Response message including the channel classification information of the CM 802 from the CM 802, the CDIS 804 transmits the Channel Classification_Response message including the channel classification information of the CM 802 to the channel Classification and channel classification update. Hereinafter, the channel classification update of the resource management system in the communication system according to another embodiment of the present invention will be described in more detail with reference to FIG.

9 is a diagram schematically illustrating a channel classification update procedure of a resource management system in a communication system according to another embodiment of the present invention. 9 is a diagram schematically illustrating a channel classification update procedure by a CM of a resource management system in a communication system according to another embodiment of the present invention.

9, in order to classify channels for coexistence and frequency sharing in the TVWS, the CM 904 performs channel classification and channel classification update in the TVWS as described above. In the TVWS, And provides its own channel classification information to the CE 902 registered to itself and the CDIS 906 or any other CMs to which it is registered.

That is, the CM 904 transmits a Channel Classification_Announcement (hereinafter referred to as 'Channel Classification_Announcement') message for notifying the CE 902 and the CDIS 906 of channel classification information of the CM 904 in the TVWS To the CE 902 and the CDIS 906 (steps 910 and 912). At this time, the CM 904 may transmit the Channel Classification_Announcement message to the other CMs in order to notify the other CMs of the channel classification information of the CM 904 in the TVWS.

The ChannelClassification_Announcement message is a message for providing channel classification information of the CM 904 in the TVWS to the CE 902 registered in an arbitrary CM 904 and the CDIS 906 in which the CM 904 is registered The channel classification information and the channel classification information of the CM 904 updated by the CM 904 are transmitted to the CE 902 and the CDIS 906 as described above. The ChannelClassification_Announcement message can also be transmitted to other CMs. The contents of the ChannelClassification_Announcement message, that is, the header and the payload of the ChannelClassification_Announcement message, can be represented as shown in Table 18.

Header Information element Data type Description sourceIdentifier = CM_ID CX_ID Source identifier destinationIdentifier = CM_ID or CE_ID CX_ID Destination identifier ACKPolicy BOOLEAN Request to send an acknowledgment of reception Payload Information element Data type Description Note: Information elements below are repeated for each TVBD network or device. networkID NetworkID Network ID chClassInfo ChClassInfo Channel classification information of the CE

The CE 902 and the CDIS 906 receiving the Channel Classification_Announcement message including the channel classification information of the CM 902 from the CM 904 use the channel classification information of the CM 904 in the TVWS And performs channel classification update in the TVWS.

As described above, in the communication system according to the embodiment of the present invention, for the coexistence and frequency sharing in the TVWS, the resource management system classifies the channel in the TVWS and determines a usable channel in the TVWS as an operation channel, The TVWS supports coexistence and frequency sharing between a plurality of systems, i.e., TVBDs.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Therefore, the scope of the present invention should not be limited by the described embodiments, but should be determined by the scope of the appended claims, as well as the appended claims.

Claims (20)

CLAIMS What is claimed is: 1. A resource management system in a communication system including a plurality of systems that do not have usage rights for a first frequency band,
A coexistence manager (CM) for managing the plurality of systems for coexistence and frequency sharing of the plurality of systems in the usable frequency band when a frequency band in which the plurality of systems are available in the first frequency band is found; );
A coexistence enabler (CE) for transmitting and receiving the information of the plurality of systems and information of the coexistence manager;
A coexistence discovery and information server (CDIS) supporting control of the coexistence manager for the plurality of systems; And
And a TVWS database (TVWS DB: TV White Space Data Base) for providing channel information of the usable frequency band;
Wherein the coexistence manager includes a plurality of coexistence managers corresponding to the plurality of systems, respectively;
The coexistence enabler includes:
Transmitting a channel classification request message to the coexistence manager, receiving a channel classification response message from the coexistence manager,
Wherein the channel classification request message includes a list of network identifiers corresponding to at least one TVWS database to which the coexistence enabler is connected,
Wherein the channel classification response message includes a network identifier corresponding to the TVWS database and channel classification information of the coexistence enabler. The method according to claim 1,
Wherein the channel classification request message and the channel classification response message each include a header, a payload, and a data type.
delete The method according to claim 1,
The coexistence managers transmit a request message requesting channel classification information of the coexistence managers to the TVWS database in the channel information and transmit a response message including the channel classification information in response to the request message to the TVWS database And channel-classifies the first frequency band.
The method according to claim 1,
The coexistence managers transmit a request message requesting the available channel list of the coexistence managers from the channel information to the TVWS database and transmit a response message including the usable channel list in response to the request message to the TVWS From the database, and channel-classifies the first frequency band.
The method according to claim 1,
The coexistence managers receive the channel information from the TVWS database and classify the first frequency band for all coexisting enablers registered in the coexistence managers using the channel information. Resource management system.
The method according to claim 1,
In the coexistence managers, the first coexistence manager transmits a request message requesting channel classification information of coexistence managers adjacent to the first coexistence manager to the coexistence discovery and information server, and in response to the request message, Receiving a response message from the coexistence discovery and information server, and classifying the first frequency band into a channel.
The method according to claim 1,
In the coexistence managers, the first coexistence manager transmits a request message requesting the channel classification information of the coexistence managers adjacent to the first coexistence manager to the adjacent coexistence managers, and in response to the request message, And receives a response message from the neighboring coexistence managers, and classifies the first frequency band into channel classes.
The method according to claim 1,
In the coexistence managers, the first coexistence manager transmits a request message requesting channel classification information of the second coexistence manager to the second coexistence manager, and transmits a response message including the channel classification information in response to the request message And receives the first frequency band from the second coexistence manager and channel-classifies the first frequency band.
The method according to claim 1,
Wherein the coexistence enabler transmits to the first coexistence manager a request message for requesting channel classification information of a first coexistence manager in which the coexistence enabler is registered in the coexistence managers, And receives a response message including channel classification information from the first coexistence manager, and classifies the first frequency band into channels.
The method according to claim 1,
The first coexistence manager in the coexistence managers receives from the coexistence discovery and information server a notification message for notifying channel classification information of the coexistence managers adjacent to the first coexistence manager and classifies the first frequency band into channels A resource management system characterized by.
12. The method of claim 11,
Wherein the coexistence discovery and information server updates the channel classification information of the adjacent coexistence managers and notifies the updated coexistence manager of the updated channel classification information using the notification message.
The method according to claim 1,
Wherein the coexistence discovery and information server transmits to the first coexistence manager a request message for requesting channel classification information of a first coexistence manager registered in the coexistence discovery and information server in the coexistence managers, Receives a response message including the channel classification information from the first coexistence manager, and classifies the first frequency band into channels.
The method according to claim 1,
Wherein the first coexistence manager updates the channel classification information of the first coexistence manager and transmits the updated channel classification information to the coexistence discovery and information server and the coexistence enabler And the coexistence managers notify the second coexistence manager.
The method according to claim 1,
Wherein the coexistence managers are configured to classify the first frequency band into at least one of an operating channel, a coexistent channel, an available channel, a protected channel, a restricted a channel, a disallowed channel, an allowed channel, and an unclassified channel.
A method for managing resources in a communication system,
A coexistence enabler (CE) sends a channel classification request message to a coexistence manager (CM), the channel classification request message including at least one TVWS database (TVWS) to which the coexistence enabler is connected DB: TV White Space Data Base)
The coexistence manager obtaining channel classification information of the coexistence enabler from the TVWS database using the list of network identifiers; And
Wherein the coexistence manager comprises a step of transmitting to the coexistence enabler a channel classification response message including a network identifier corresponding to the TVWS database and channel classification information of the coexistence enabler, How to manage.
17. The method of claim 16,
Wherein the step of acquiring the channel classification information includes the steps of: transmitting a request message requesting a list of available channels of the coexistence managers to the TVWS database; transmitting a response message including the available channel list in response to the request message; From the TVWS database.
17. The method of claim 16,
The step of acquiring the channel classification information may include transmitting a request message requesting channel classification information of coexistence managers adjacent to the first coexistence manager to the adjacent coexistence managers in the coexistence managers, And receives a response message including classification information from the adjacent coexistence managers.
17. The method of claim 16,
The step of acquiring the channel classification information includes:
The coexistence managers receiving channel information from the TVWS database;
Further comprising the step of channelizing all the coexisting enablers registered in the coexistence managers using the channel information.
17. The method of claim 16,
The channel classification may be such that the frequency band is selected from the group consisting of an operating channel, a coexistent channel, an available channel, a protected channel, a restricted channel, a disallowed channel, ), An allowed channel, and an unclassified channel.

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