WO2013157800A1 - Procédé et dispositif de gestion de canaux de réserve pour communication radio cognitive - Google Patents

Procédé et dispositif de gestion de canaux de réserve pour communication radio cognitive Download PDF

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Publication number
WO2013157800A1
WO2013157800A1 PCT/KR2013/003163 KR2013003163W WO2013157800A1 WO 2013157800 A1 WO2013157800 A1 WO 2013157800A1 KR 2013003163 W KR2013003163 W KR 2013003163W WO 2013157800 A1 WO2013157800 A1 WO 2013157800A1
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WO
WIPO (PCT)
Prior art keywords
group
backup channel
groups
target
managing
Prior art date
Application number
PCT/KR2013/003163
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English (en)
Korean (ko)
Inventor
황성현
정병장
고광진
에이 안토니프랭클린
Original Assignee
한국전자통신연구원
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020130041149A external-priority patent/KR101627395B1/ko
Application filed by 한국전자통신연구원 filed Critical 한국전자통신연구원
Priority to US14/394,416 priority Critical patent/US9706370B2/en
Publication of WO2013157800A1 publication Critical patent/WO2013157800A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0251—Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity
    • H04W52/0254—Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity detecting a user operation or a tactile contact or a motion of the device
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/51—Allocation or scheduling criteria for wireless resources based on terminal or device properties
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/18—Interfaces between hierarchically similar devices between terminal devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to a method and apparatus for managing a backup channel for cognitive radio communication for effectively managing idle frequencies in a cognitive radio communication system sharing frequency resources.
  • channel switching that occurs frequently due to positional change due to movement of devices and overlapping between groups due to the appearance of a new device (group) may be prevented.
  • an increase in overhead and a decrease in quality of service (QoS) due to frequent channel switching and complicated resource management may be reduced.
  • a method of managing a backup channel for cognitive wireless communication comprises: grouping devices included in at least one cell served by a base station; And assigning a backup channel for cognitive wireless communication to the groups based on the mobility of the grouped groups and the location information of the groups.
  • the group type of the groups may be determined as either a mobile group having mobility or a fixed group having no mobility, depending on whether the group has mobility.
  • the allocating the backup channel may include allocating a backup channel to a target group performing cognitive wireless communication among the groups based on the mobility of the groups and the location information of the groups.
  • the step of allocating the backup channel is based on at least one of the group type of the other group of the target group and the group, and whether the target group and the other group overlaps, the cognitive radio communication to the target group and the other group
  • the method may include allocating a backup channel for the backup channel.
  • allocating the same backup channel to the target group and the other group may be included.
  • the group type of the target group is either a fixed group or a mobile group
  • the group type of the other group is a mobile group
  • the positions of the target group and the other group do not overlap, the target group and the other group And assigning the same backup channel to the.
  • the group type of the target group is either a fixed group or a mobile group and the group type of the other group is a mobile group, allocating different backup channels to the target group and the other group may be included.
  • Allocating the backup channel may include determining whether there is an idle channel that is not assigned to the groups; And if the idle channel exists, allocating the idle channel to the target group.
  • the method may further include allocating a backup channel assigned to the mobile group to the target group.
  • allocating the backup group assigned to the fixed group or the mobile group to the target group It may further include.
  • the method may further include allocating a backup channel allocated to the base station to the target group.
  • the devices transmit and receive a management message for managing the backup channel, and the management message is sent to a group type indicating whether the group is mobile, a location of a group to which the devices belong, a device identifier for identifying the devices, and the base station. It may include at least one of a group identifier for identifying each of the groups served by.
  • an apparatus for managing a backup channel for cognitive radio communication may include: a grouping unit for grouping devices included in at least one cell served by a base station; And an allocator configured to allocate a backup channel for cognitive wireless communication to the groups based on the mobility of the grouped groups and the location information of the groups.
  • the group type of the groups may be determined as either a mobile group having mobility or a fixed group having no mobility, depending on whether the group has mobility.
  • the allocation unit may be configured to the target group and the other group based on at least one of a target group performing the cognitive radio communication and a group type of another group among the groups, and whether the target group overlaps with the location of the other group.
  • a backup channel for cognitive radio communication can be allocated.
  • the cognitive wireless communication system it is possible to reduce the frequent channel switching due to the position change according to the movement of the device and the appearance of a new device (or group).
  • an increase in overhead due to complex resource management and a decrease in quality of service (QoS) may be reduced.
  • FIG. 1 is a diagram illustrating a network environment in which a method of managing a backup channel for cognitive radio communication is performed according to an embodiment.
  • FIG. 2 is a flowchart illustrating a method of managing a backup channel for cognitive radio communication according to an embodiment.
  • FIG. 3 is a flowchart illustrating a method of managing a backup channel for cognitive wireless communication according to another embodiment.
  • FIG. 4 is a flowchart illustrating a method of managing a backup channel for cognitive wireless communication according to another embodiment.
  • FIG. 5 is a diagram illustrating a management message used to manage a backup channel of a group according to a method of managing a backup channel for cognitive wireless communication according to an embodiment.
  • FIG. 6 is a block diagram of an apparatus for managing a backup channel for cognitive radio communication according to an embodiment.
  • FIG. 1 is a diagram illustrating a network environment in which a method of managing a backup channel for cognitive radio communication is performed according to an embodiment.
  • a plurality of devices included in a plurality of cells served by a base station are grouped into a plurality of groups according to a method of managing a backup channel for cognitive wireless communication according to an embodiment. You can look.
  • the backup channel is allocated to each group to which each device belongs, and the devices belonging to the group can acquire the backup channel assigned to the group by competing with each other.
  • the backup channel may be understood as a candidate channel or a radio resource selected as the next operating channel when the licensed user who is authorized appears in the operating channel used in cognitive radio communication (system).
  • Devices belonging to each of the groups may be classified into hub devices and nano devices according to their roles.
  • the hub device can control a number of nanodevices in the group.
  • Nano devices connected to the hub device may be included in the same group.
  • the hub device may directly access a Cognitive Radio database to obtain database information ('Mode II device'), or connect to another device to obtain database information ('Mode I device').
  • 'Mode II device' database information
  • 'Mode I device' database information
  • nano devices can always connect to other devices to get database information.
  • Devices included in one group may have the same Group ID (GID), but may have different Connection IDs (CIDs).
  • GID Group ID
  • CIDs Connection IDs
  • the group may generally consist of one hub device and a plurality of nanodevices. Groups may be classified into fixed device groups, or fixed groups, and mobile device groups, or mobile groups, depending on mobility of hub devices.
  • the fixed group may mean a group in which the hub device is fixed and the mobile group is a mobile device.
  • the fixed nanodevices included in the fixed group may be installed in houses 133 or wind turbines 142,143, and the like, and the mobile nanodevices included in the fixed group may have live stocks 123. It may be attached to the back.
  • the mobile nanodevices included in the mobile group 150 may be installed in an ambulance 152, 153, a police car 154, or boats.
  • One or more groups may exist in a cell controlled by the base station 110. Each group behaves like a small cell where the hub device can provide the functionality of a small base station in that small cell.
  • the mobility and location information of each group may be used to manage the backup channel of the group.
  • groups fixed group and fixed group, fixed group and mobile group, and mobile group and mobile group. have.
  • different backup channels may be allocated to each group in the fixed group and the mobile group and the relationship between the mobile group and the mobile group. However, if the two groups do not overlap when considering location information, the base station 110 may assign the same backup channel to each group for frequency reuse.
  • the backup channel information of each group is updated. Can be.
  • first fixed group 120 first fixed group 120, second fixed group 130, and third fixed group 140
  • mobile group 150 mobile group 150
  • the base station 110 is connected to the first fixed group 120, the second fixed group 130, the third fixed group 140, and the mobile group 150 through a wireless interface to belong to each of the groups ( 121, 122, 123, 124, 125, 131, 133, 141, 142, 143, 151, 152, 153 may be served.
  • the first stationary group 120 may be a farm
  • the second stationary group 130 may be a village
  • the third stationary group 140 may be wind turbines.
  • the moving group 150 may include a car, a ship, and the like.
  • the base station 110 has the same backup to each group because the hub devices of the two groups are installed and fixed in the farm 121 and the building 131, respectively. You can assign channels. However, since the positions of the first fixed group 120 and the second fixed group 130 overlap each other, the base station 110 provides different backup channels 2 to the first fixed group 120 and the second fixed group 130. You can assign times and three times.
  • the hub devices of the two groups may be installed and fixed in the farm 121 and the tower 140, respectively. Since the positions of the first fixed group 120 and the third fixed group 140 do not overlap each other, the base station 110 has the same backup channel number 2 in the first fixed group 120 and the third fixed group 140. Can be assigned.
  • the base station 110 may allocate different backup channels 2 and 3 to each group. Meanwhile, in the relationship between the second fixed group 130 and the mobile group 150, the base station 110 may allocate different backup channels to each group. However, since the two groups do not overlap, the base station 110 may allocate the same backup channel 3 to each group according to the availability of the idle frequency.
  • the management device may be a base station or may be a separate device other than the base station.
  • an apparatus for managing a backup channel for cognitive radio communication may group devices included in at least one cell served by a base station. It may be 210.
  • a group type of groups grouped at 210 may be determined depending on whether the corresponding group has mobility. For example, if the group has mobility, the group type of the group may be determined as a mobile group. If the group does not have mobility, the group type of the group may be determined as a fixed group.
  • Whether the group has mobility may be determined according to whether the hub devices included in the group have mobility. For example, in FIG. 1, only the hub device 151 of the hub devices 121, 131, 141, and 151 is installed in a command vehicle having mobility and has mobility, and the remaining hub devices 121, 131, and 141 are farm, It is installed on a fixed object such as building and tower and does not have mobility. Accordingly, a group including the mobile hub device 151 may be determined as a mobile group, and a group including the fixed hub devices 121, 131, and 141 may be determined as a fixed group.
  • the management device may allocate a backup channel for cognitive wireless communication to the groups based on the mobility of the groups grouped at 210 and the location information of the groups (220).
  • the management group may allocate a backup channel to a target group performing cognitive wireless communication among the groups based on the mobility of the groups and the location information of the groups.
  • the management group may allocate a backup channel for cognitive radio communication to the target group and the other group based on at least one of 1) the group type of the target group and the other group, and 2) whether the target group and the other group overlap. have.
  • FIG. 3 is a flowchart illustrating a method of managing a backup channel for cognitive wireless communication according to another embodiment.
  • a management apparatus may group 310 devices included in at least one cell served by a base station (310).
  • the management device may determine 320 a group type of each group in which the devices are grouped.
  • the management device is based on at least one of the group type of the groups (eg, the target group and the other group) and whether the target group and the other group overlap, the backup channel for cognitive radio communication to the target group and the other group Can be assigned.
  • the group type of the groups may be determined according to the mobility of the groups (or hub devices included in each group).
  • the management device may determine whether all the group types of the target group and the other group are fixed groups (330).
  • the management device may determine whether the positions of the target group and the other group overlap (340).
  • the management device may allocate different backup channels to the target group and the other group (350). In contrast, if it is determined at 340 that the positions of the target group and the other group do not overlap, the management device may allocate the same backup channel to the target group and the other group (360).
  • the management device may determine whether the positions of the target group and the other group overlap (370).
  • the case in which the group type of the target group and the other group are not all fixed groups may be one in which the group type of the target group is either a fixed group or a mobile group and the group type of the other group is a mobile group.
  • the management device may allocate different backup channels to the target group and the other group (350). On the other hand, if the location of the target group and the other group does not overlap, the management device may allocate the same backup channel to the target group and the other group (360).
  • FIG. 4 an embodiment showing more specifically what is the backup channel allocated to the target group will be described.
  • FIG. 4 is a flowchart illustrating a method of managing a backup channel for cognitive wireless communication according to another embodiment.
  • the management apparatus may group devices included in at least one cell served by a base station (405).
  • the management device may then assign a backup channel for cognitive wireless communication to the groups based on the mobility of the groups grouped and the location information of the groups at 405.
  • the management device may allocate the white space to the target group.
  • 'White space' can be understood as an idle channel or idle frequency that is not used by the licensee.
  • the management device may determine whether there is an idle channel that is not assigned to the groups (410). If it is determined in step 410 that the idle channel exists, the management device may allocate the idle channel to the target group (415).
  • the management device may determine whether there is a backup channel assigned to the fixed group among the groups (420).
  • the reason for checking the backup channel assigned to the fixed group is that even if the backup channel assigned to the current movement group is determined to be available, if the status of the backup group becomes unavailable due to the mobility of the movement group, there is a burden of switching the channel. Because there is.
  • the management device can assign the backup channel assigned to the fixed group to the target group.
  • the management device may determine whether the positions of the fixed group and the target group overlap (430). If it is determined at 430 that the positions of the fixed group and the target group do not overlap, the management device may allocate a backup channel allocated to the fixed group to the target group (435).
  • the management device may proceed to 440 and determine whether there is a backup channel assigned to the mobile group.
  • the management device may determine whether there is a backup channel assigned to the mobile group (440). If there is no backup channel assigned to the mobile group at 440, the management device may allocate the backup channel assigned to the base station to the target group (445).
  • the management device may determine whether the positions of the mobile group and the target group overlap (450). Even if there is a backup channel assigned to the mobile group, if the mobile group and the target group overlap, the backup channel assigned to another fixed group or another mobile group can be allocated to the target group and used (455).
  • the management device may use a mechanism for appropriate resource sharing between groups. Therefore, if there is no backup channel assigned to all fixed groups and mobile groups, the base station determines that there is no backup channel that can be allocated to the target group, and thus may allocate the backup channel assigned to the base station to the target group.
  • the base station may perform an appropriate resource sharing mechanism between devices not belonging to the group and devices belonging to the group.
  • the method of managing the backup channel according to an embodiment may vary slightly depending on the mobility of the target group or the surrounding environment.
  • the management device may allocate a backup channel assigned to the mobile group to the target group (460).
  • FIG. 5 is a diagram illustrating a management message used to manage a backup channel of a group according to a method of managing a backup channel for cognitive wireless communication according to an embodiment.
  • a management message is used to manage a backup channel of a group, for example, a type of group (TOG) 510, a location of group: LOG 520, a device identifier (DID) 530, and a group identifier (GID) 540 may be included as a parameter.
  • TOG type of group
  • DID device identifier
  • GID group identifier
  • the group type (TOG) 510 indicates whether the group is mobile and may be determined according to the mobility of hub devices included in the group.
  • the group type (TOG) 510 may be replaced with a type of hub-device (TOH).
  • the group type 510 may display a value of the corresponding bit as '0' when the corresponding group is a fixed group, and display a value of the corresponding bit as '1' when the corresponding group is a moving group. .
  • the group location (LOG) 520 may include location information of the group and may indicate information such as latitude and longitude of the region where the group is located.
  • the group location 520 may be represented by latitude and longitude, for example. Location information of the group may be determined based on location information of the hub device.
  • the device identifier (DID) 530 is an identifier (ID) for identifying each device.
  • ID The number of bits of the device identifier may be determined by the total number of devices belonging to a cell controlled by the base station BS.
  • Group identifier (GID) 540 is an identifier for identifying each group connected to the base station (in other words, served by the base station). The number of bits of the group identifier 540 may be determined by the number of all groups connected to the base station.
  • FIG. 6 is a block diagram of an apparatus for managing a backup channel for cognitive radio communication according to an embodiment.
  • an apparatus for managing a backup channel may include a grouping unit 610 and an allocating unit 630.
  • the grouping unit 610 may group devices included in at least one cell served by the base station.
  • the allocator 630 may allocate a backup channel for cognitive radio communication to the groups based on the mobility of the groups grouped by the grouping unit 610 and the location information of the groups.
  • the group type of the groups may be determined as either a mobile group having mobility or a fixed group having no mobility, depending on whether the group has mobility. Whether the group has mobility may be determined by whether the hub devices included in the group have mobility.
  • the allocator 630 is configured to backup the cognitive radio to the target group and the other group based on at least one of the group type of the target group and the other group and the location of the target group and the other group that perform the cognitive radio communication. You can assign channels. A detailed method of allocating the backup channel to the target group and other groups by the allocator 630 will be described with reference to FIGS. 3 to 4.
  • Method according to an embodiment of the present invention is implemented in the form of program instructions that can be executed by various computer means may be recorded on a computer readable medium.
  • the computer readable medium may include program instructions, data files, data structures, etc. alone or in combination.
  • Program instructions recorded on the media may be those specially designed and constructed for the purposes of the present invention, or they may be of the kind well-known and available to those having skill in the computer software arts.
  • Examples of computer readable recording media include magnetic media such as hard disks, floppy disks and magnetic tape, optical media such as CD-ROMs, DVDs, and magnetic disks such as floppy disks.
  • Examples of program instructions include not only machine code generated by a compiler, but also high-level language code that can be executed by a computer using an interpreter or the like.
  • the hardware device described above may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

Abstract

L'invention concerne un procédé et un dispositif de gestion de canaux de réserve pour communication radio cognitive, caractérisés en ce que le procédé regroupe des dispositifs appartenant à au moins une cellule desservie par une station de base et attribue des canaux de réserve pour communication radio cognitive aux groupes en se basant sur les informations de mobilité et de localisation des groupes.
PCT/KR2013/003163 2012-04-16 2013-04-16 Procédé et dispositif de gestion de canaux de réserve pour communication radio cognitive WO2013157800A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US14/394,416 US9706370B2 (en) 2012-04-16 2013-04-16 Method and device for managing backup channels for cognitive radio communication

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR20120038945 2012-04-16
KR10-2012-0038945 2012-04-18
KR1020130041149A KR101627395B1 (ko) 2012-04-16 2013-04-15 인지 무선 통신을 위한 백업 채널을 관리하는 방법 및 장치
KR10-2013-0041149 2013-04-15

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WO2013157800A1 true WO2013157800A1 (fr) 2013-10-24

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100021996A (ko) * 2007-04-23 2010-02-26 더 홍콩 유니버시티 오브 사이언스 앤드 테크놀러지 무선 인지 시스템에서의 클러스터 기반 협력 스펙트럼 감지
KR20110030507A (ko) * 2008-09-30 2011-03-23 모토로라 인코포레이티드 무선 인지 네트워크에 의한 스펙트럼 사용 최적화 방법 및 장치
KR20120012829A (ko) * 2009-07-15 2012-02-10 엘지전자 주식회사 인지 무선 전송 시스템 및 방법
US20120071189A1 (en) * 2010-03-30 2012-03-22 Mody Apurva N Method and system for the spectrum manager operation in cognitive radio systems
KR20120029912A (ko) * 2010-09-17 2012-03-27 동국대학교 산학협력단 채널 할당 장치 및 방법

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100021996A (ko) * 2007-04-23 2010-02-26 더 홍콩 유니버시티 오브 사이언스 앤드 테크놀러지 무선 인지 시스템에서의 클러스터 기반 협력 스펙트럼 감지
KR20110030507A (ko) * 2008-09-30 2011-03-23 모토로라 인코포레이티드 무선 인지 네트워크에 의한 스펙트럼 사용 최적화 방법 및 장치
KR20120012829A (ko) * 2009-07-15 2012-02-10 엘지전자 주식회사 인지 무선 전송 시스템 및 방법
US20120071189A1 (en) * 2010-03-30 2012-03-22 Mody Apurva N Method and system for the spectrum manager operation in cognitive radio systems
KR20120029912A (ko) * 2010-09-17 2012-03-27 동국대학교 산학협력단 채널 할당 장치 및 방법

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