[go: up one dir, main page]

WO2014065611A1 - Procédé et dispositif d'attribution de ressource dans un système de réseau local sans fil, procédé de terminal de communication et terminal de communication - Google Patents

Procédé et dispositif d'attribution de ressource dans un système de réseau local sans fil, procédé de terminal de communication et terminal de communication Download PDF

Info

Publication number
WO2014065611A1
WO2014065611A1 PCT/KR2013/009530 KR2013009530W WO2014065611A1 WO 2014065611 A1 WO2014065611 A1 WO 2014065611A1 KR 2013009530 W KR2013009530 W KR 2013009530W WO 2014065611 A1 WO2014065611 A1 WO 2014065611A1
Authority
WO
WIPO (PCT)
Prior art keywords
rab
interval
bandwidth
raw
resource allocation
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/KR2013/009530
Other languages
English (en)
Korean (ko)
Inventor
정민호
권형진
이재승
박재우
이석규
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Electronics and Telecommunications Research Institute ETRI
Original Assignee
Electronics and Telecommunications Research Institute ETRI
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
Application filed by Electronics and Telecommunications Research Institute ETRI filed Critical Electronics and Telecommunications Research Institute ETRI
Priority to US14/438,184 priority Critical patent/US9794929B2/en
Priority claimed from KR1020130127273A external-priority patent/KR102167884B1/ko
Publication of WO2014065611A1 publication Critical patent/WO2014065611A1/fr
Anticipated expiration legal-status Critical
Priority to US15/706,159 priority patent/US10342011B2/en
Priority to US16/418,764 priority patent/US10897759B2/en
Ceased legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the following description relates to a WLAN system and a method and apparatus for allocating resources in a WLAN system.
  • the first direction is a technology to further increase the transmission speed, there is a WLAN technology using a 60GHz band and a WLAN technology using a 5GHz band.
  • the second technology is a wide area WLAN technology that utilizes a frequency band of less than 1 GHz to increase coverage than the existing WLAN technology.
  • the third direction is a technique for reducing the link setup time of the WLAN system.
  • the wide area WLAN technology should be able to accommodate a much larger number of stations (STAs) than the existing WLAN technology.
  • the wide area WLAN technology needs to simultaneously support STAs having various service types, traffic types, and power save requirements, such as an offloading terminal and a sensor terminal.
  • a wide area wireless LAN system is being developed in order to reduce collisions during channel access and to efficiently save power by grouping a large number of STAs.
  • the broadband WLAN system is being developed to efficiently use limited resources such as bandwidth (BW), time, and power.
  • a method of allocating a resource in a WLAN system may include: determining a restricted access bandwidth (RAB) interval based on at least one of a plurality of bandwidths or one partial bandwidth; And setting a restricted access window in the time domain based on the limited access bandwidth section.
  • RAB restricted access bandwidth
  • the resource allocation method may further include checking a situation of a basic service set (BSS) including an access point (AP) and at least one station. have.
  • BSS basic service set
  • AP access point
  • AP access point
  • the resource allocation method may further include transmitting information about the RAB interval and the RAW to a station.
  • a communication method in a WLAN system includes: receiving information about a restricted access bandwidth (RAB) section and a restricted access window (RAW); Determining whether communication is possible in the frequency domain determined based on the RAB interval; And transmitting data in a time domain determined based on the RAW when communication in the frequency domain is possible.
  • RAB restricted access bandwidth
  • RAW restricted access window
  • an apparatus for allocating a resource may include: a RAB interval determination unit configured to determine a restricted access bandwidth (RAB) interval based on at least one of a plurality of bandwidths or a partial bandwidth of one of a plurality of bandwidths; ; And a RAW setting unit configured to set a restricted access window in the time domain based on the limited access bandwidth section.
  • RAB interval determination unit configured to determine a restricted access bandwidth (RAB) interval based on at least one of a plurality of bandwidths or a partial bandwidth of one of a plurality of bandwidths.
  • RAW setting unit configured to set a restricted access window in the time domain based on the limited access bandwidth section.
  • the apparatus for allocating a resource may further include a status check unit for checking a status of a basic service set (BSS) including an access point (AP) and at least one station.
  • BSS basic service set
  • AP access point
  • the apparatus for allocating a resource may further include a communication unit configured to transmit information regarding the RAB interval and the RAW to a station.
  • a communication terminal includes: a communication unit configured to receive information regarding a restricted access bandwidth (RAB) section and a restricted access window (RAD); And a controller configured to determine whether communication is possible in the frequency domain determined based on the RAB interval, and wherein the communication unit transmits data in the time domain determined based on the RAW when communication is possible in the frequency domain.
  • RAB restricted access bandwidth
  • RAD restricted access window
  • FIG. 1 is a diagram for describing multiple bandwidths of a wide area wireless LAN system according to an embodiment.
  • FIG. 2 is a diagram illustrating an exemplary structure of an IEEE 802.11 system to which the present invention can be applied.
  • FIG. 3 is a diagram illustrating a detailed configuration of an apparatus for allocating resources in a WLAN system according to an embodiment.
  • FIG. 4 is a diagram illustrating a detailed configuration of a communication terminal in a wireless LAN system according to an embodiment.
  • 5 to 6 are diagrams illustrating an example for describing a method of allocating resources according to an embodiment.
  • FIGS. 7A to 7B are diagrams for describing an example of the configuration of a duplication mode frame according to an embodiment.
  • 8A to 8B are diagrams for describing an example of a configuration of a duplication mode frame according to another embodiment.
  • FIG. 9 is a flowchart illustrating an operation of a resource allocation method in a WLAN system according to an embodiment.
  • FIG. 10 is a flowchart illustrating an operation of a communication method in a WLAN system according to an embodiment.
  • each component or feature may be considered to be optional unless otherwise stated.
  • Each component or feature may be embodied in a form that is not combined with other components or features.
  • some components and / or features may be combined to form an embodiment of the present invention.
  • the order of the operations described in the embodiments of the present invention may be changed. Some components or features of one embodiment may be included in another embodiment or may be replaced with corresponding components or features of another embodiment.
  • Embodiments of the present invention may be supported by standard documents disclosed in at least one of the wireless access systems IEEE 802 system, 3GPP system, 3GPP LTE and LTE-A (LTE-Advanced) system and 3GPP2 system. That is, steps or parts which are not described to clearly reveal the technical spirit of the present invention among the embodiments of the present invention may be supported by the above documents. In addition, all terms disclosed in the present document can be described by the above standard document.
  • CDMA code division multiple access
  • FDMA frequency division multiple access
  • TDMA time division multiple access
  • OFDMA orthogonal frequency division multiple access
  • SC-FDMA single carrier frequency division multiple access
  • CDMA may be implemented with a radio technology such as Universal Terrestrial Radio Access (UTRA) or CDMA2000.
  • TDMA may be implemented with wireless technologies such as Global System for Mobile communications (GSM) / General Packet Radio Service (GPRS) / Enhanced Data Rates for GSM Evolution (EDGE).
  • GSM Global System for Mobile communications
  • GPRS General Packet Radio Service
  • EDGE Enhanced Data Rates for GSM Evolution
  • OFDMA may be implemented in a wireless technology such as IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802-20, Evolved UTRA (E-UTRA).
  • Wi-Fi IEEE 802.11
  • WiMAX IEEE 802.16
  • E-UTRA Evolved UTRA
  • FIG. 1 is a diagram for describing multiple bandwidths of a wide area wireless LAN system according to an embodiment.
  • a wide area WLAN system may support multiple bandwidths.
  • the multiple bandwidths can include a first bandwidth having the lowest signal-to-noise ratio and a second bandwidth that is twice the first bandwidth.
  • the value of the first bandwidth may be 1 MHz.
  • the multi-bandwidth may include a 1 MHz bandwidth 110, a 2 MHz bandwidth 120, a 4 MHz bandwidth 130, an 8 MHz bandwidth 140, and a 16 MHz bandwidth 150.
  • the frequency band of the wide area wireless LAN system may be 1 GHz or less.
  • multiple bandwidths include 1 MHz, 2 MHz, 4 MHz, 8 MHz, and 16 MHz.
  • the lower frequency limit 161 of FIG. 1 may be a value between 700 and 920 [MHz]
  • the upper frequency limit 163 may be a value between 750 and 930 [MHz].
  • the 1 MHz bandwidth 110 may be allocated over an entire channel, and the remaining bandwidths 120, 130, 140, and 150 may be allocated only to a portion of the entire channel.
  • the 16 MHz bandwidth 150 may be allocated between the frequency upper limit value 163 at 165 of FIG. 1.
  • 8 MHz is allocated to the 2 MHz bandwidth 120
  • 4 channels are allocated to the 4 MHz bandwidth 130
  • 2 channels are allocated to the 8 MHz bandwidth 140.
  • the channel assignment shown in FIG. 1 is exemplary, and the number and frequency bands of the channels can be configured in various ways.
  • a transmission mode having a bandwidth value of 1 MHz (110) may be referred to as a 1 MHz mode
  • a transmission mode having a bandwidth value of 2 MHz (120) may be referred to as a 2 MHz mode.
  • the transmission modes when the bandwidth values are 4 MHz (130), 8 MHz (140), and 16 MHz (150) may be referred to as 4 MHz mode, 8 MHz mode, and 16 MHz mode, respectively.
  • the 1 MHz mode represents a transmission mode having 32 subcarriers while maintaining an orthogonal frequency division multiplexing (OFDM) symbol structure.
  • OFDM orthogonal frequency division multiplexing
  • FIG. 2 is a diagram illustrating an exemplary structure of an IEEE 802.11 system to which the present invention can be applied.
  • the IEEE 802.11 system may be configured with a basic service set (BSS) representing a basic building block.
  • BSS basic service set
  • 2 exemplarily shows two STAs (STA 1 220 and STA 2 230) as BSS members.
  • the communication device 210 may be an access point (AP) or a base station.
  • an ellipse 211 indicating a BSS may be understood as representing a coverage area in which STAs (or communication terminals) included in the BSS maintain communication. This area may be referred to as a basic service area (BSA).
  • BSA basic service area
  • An Access Point is a base station (BS), a Node-B (Node-B), an evolved Node-B (eNB), a base transceiver system (Base) in other wireless communication fields. It may correspond to a transceiver system (BTS), a femto base station (Femto BS).
  • BTS transceiver system
  • Femto BS femto base station
  • Beacon frame (beacon frame) is one of the management frame (management frame) in IEEE 802.11, it can be transmitted periodically to inform the presence of the wireless network, the STA performing scanning to join the wireless network to find the wireless network. .
  • the AP may periodically transmit a beacon frame.
  • the STA may store the information on the BSS included in the beacon frame and record beacon frame information in each channel while moving to another channel.
  • the STA may store BSS related information included in the received beacon frame, move to the next channel, and perform scanning on the next channel in the same manner.
  • STA 1 220 and STA 2 230 are terminals capable of receiving and demodulating both a signal transmitted in a 1 MHz mode and a signal transmitted in a 2 MHz mode, respectively.
  • the STA 1 220 may receive the signal but the STA 2 230 may not receive the signal.
  • the 1MHz mode has the longest signal transmission distance compared to other modes.
  • the communication device 210 transmits a signal using the 1 MHz mode, not only the STA 1 220 but also the STA 2 230 may receive the signal. Therefore, a duplication mode using 2 MHz as a basic bandwidth is required and a duplication mode using 1 MHz as a basic bandwidth.
  • FIG. 3 is a diagram illustrating a detailed configuration of an apparatus 300 for allocating a resource in a WLAN system according to an exemplary embodiment.
  • the resource allocation apparatus 300 may include a restricted access bandwidth (RAB) section determiner 320 and a restricted access window (RAW) setter 330.
  • the resource allocation apparatus 300 may further include a status check unit 310 and a communication unit 340.
  • the resource allocation apparatus 300 may operate in a built-in access point.
  • the situation check unit 310 may check a situation of a basic service set including an access point and at least one STA.
  • the situation checker 310 may check a vulnerable situation of an overlapping basic service set (OBSS) such as a periodic mute interval. Unless it is a non-traffic indication map (TIM), the situation of making certain bandwidth modes available can only be affected by the OBSS.
  • the situation check unit 310 may provide the situation information on the OBSS to the RAB section determination unit 320.
  • the STA may recognize the existence of data to be transmitted to the STA based on the TIM (Traffic Indication Map) element.
  • TIM Traffic Indication Map
  • the RAB interval determination unit 320 may determine a restricted access bandwidth (RAB) interval based on at least one bandwidth or one partial bandwidth among the plurality of bandwidths.
  • the RAB section represents the monopoly section on the frequency axis. Based on the RAB interval, the frequency region in which the station is allowed to access may be determined. For example, only data transmissions smaller than or equal to the bandwidth of the configured RAB may be allowed, or only data transmissions greater than or equal to the bandwidth of the configured RAB may be allowed.
  • the RAB section determination unit 320 may determine the RAB section based on the situation information on the OBSS provided from the situation checker 310.
  • the RAB interval determination unit 320 may determine any one bandwidth or any one partial bandwidth among the plurality of bandwidths based on the situation of the basic service set.
  • the RAB interval determination unit 320 may determine the RAB interval based on the determined one bandwidth or one partial bandwidth. For example, the RAB interval determination unit 320 may determine the third bandwidth from the left at a specific bandwidth or a specific partial bandwidth (eg, 16 MHz BSS operation) determined to be clean for the OBSS based on the situation information on the OBSS. 4 MHz bandwidth), and the determined specific bandwidth or specific partial bandwidth may be determined as the RAB interval.
  • a specific bandwidth or a specific partial bandwidth eg, 16 MHz BSS operation
  • the RAB interval determiner 320 may identify an available bandwidth by periodically setting a mute interval in order to measure interference from the OBSS. To this end, in the downlink transmission, it is necessary to be able to set an initially intended bandwidth plan for all STAs according to a transmission plan. Therefore, it should be allowed to allow overlap between individual slots.
  • the RAW setting unit 330 may set a restricted access window in the time domain based on the RAB section determined by the RAB section determining unit 320.
  • RAW is a monopoly section on the time axis, and represents a predetermined time interval in which only specific STA (s) are allowed access.
  • the RAW may determine a time domain in which the STA is allowed to access.
  • the RAW setting unit 330 may control the STA to access the data transmission in a specific bandwidth only in a specific time interval by setting the RAW in the RAB interval. For example, since RAW is set in the RAB interval, the time interval entry of the RAW may be allowed only for data transmission that is smaller than or equal to (or greater than or equal to) the bandwidth set. Accordingly, the utilization rate of frequency resources in terms of the overall BSS can be improved.
  • the RAB interval determiner 320 may set the frequency interval of "4MHz or more" on the frequency axis to allow only right 4MHz, left 4MHz, or 8MHz data transmission.
  • the RAW setting unit 330 may allow only the right 4MHz, left 4MHz, or 8MHz data transmission in the time interval corresponding to the set RAW by setting the RAW for the RAB interval determined on the frequency axis.
  • the RAB interval determiner 320 may set a frequency interval of “2 MHz or less” on the frequency axis to allow only 2 MHz or 1 MHz data transmission.
  • the RAW setting unit 330 may allow only 2MHz or 1MHz data transmission in a time section corresponding to the set RAW by setting the RAW for the RAB section determined on the frequency axis.
  • the RAW setting unit 330 may set the priority of RAW based on the bandwidth used by the STA.
  • the RAW setting unit 330 may group and assign STAs according to the priority of RAW.
  • the RAW setting unit 330 may set the RAW for each station within the beacon interval based on the priority of the RAW.
  • the RAW setting unit 330 may set the RAW for the STA so that the STA (s) using the larger bandwidth is prioritized in the beacon period in time.
  • the communication unit 340 may transmit information on the RAB interval and the RAW to the STA.
  • the communication unit 340 may arrange the data in units of slots.
  • the communication unit 340 may simultaneously perform a plurality of bandwidth transmissions without overlapping on the frequency axis.
  • the communication unit 340 may improve frequency efficiency by performing multi-channel transmission in a slot unit.
  • the communication unit 340 may transmit information on the RAB interval to the STA at every slot start time using a duplication mode frame or a sync frame.
  • the communication unit 340 may broadcast a broadcast at each slot start time using a frame in the form of duplication in which the available frequency range of the corresponding slot becomes. Or, the communication unit 340 is sync. You can also add this functionality to a frame.
  • the communication unit 340 may store the information on the RAB interval or information on the available frequency range in the signal unit (SIG) field or scrambling seed of the basic unit in the duplication mode prime to transmit to the station. have.
  • SIG signal unit
  • RTS request to send
  • CTS clear to send
  • the process of identifying an available frequency range in units of slots (or RAWs) may be performed first through a sequence exchange.
  • RTS / CTS is performed at the slot level or RTS / CTS is performed between individual links, there will be a reduction in the bandwidth for each link originally intended. Therefore, there is a risk that the bandwidth used through RTS / CTS exchange will overlap. none.
  • the primary / secondary channel allocation method up to 802.11ac in which primary 1 MHz, primary 2 MHz, and primary 4 MHz are uniquely determined, is further flexible, for example, even at secondary 40 MHz. It is necessary to control the downlink transmission to a specific STA.
  • the resource allocation apparatus 300 allows the RAB interval to be started at any time between beacon intervals, and separate indication information for starting the RAW. (For example, a list of corresponding STAs) may be provided at a start time. If the OBSS vulnerable situation changes only occasionally, you only need to display this information in a beacon. On the other hand, the bandwidth to be used may be changed in the middle due to an unexpected instantaneous situation. In this case, it should be possible to move to a time interval for another bandwidth which is not scheduled.
  • FIG. 4 is a diagram illustrating a detailed configuration of a communication terminal 400 in a wireless LAN system according to an embodiment.
  • the communication terminal 400 may include a communication unit 410 and a control unit 420.
  • the communication unit 410 may receive information about a restricted access bandwidth (RAB) section and a restricted access window (RAW) from the access point.
  • a frequency domain in which data transmission is allowed may be determined through the RAB interval.
  • RAW may indicate a time domain in which data transfer is permitted.
  • the communication unit 410 may extract information about the RAB interval in the duplication mode frame or the synchronization frame received from the access point at every slot start time.
  • the communication unit 410 may extract information on the RAB interval or information on the available frequency range from the signal field or the scrambling seed of the basic unit in the duplication mode prime.
  • the controller 420 may determine a frequency region to which access is allowed based on the RAB interval, and determine whether communication is possible in the determined frequency region.
  • the RAB interval may be represented in the form of bandwidth or partial bandwidth.
  • the RAB interval may determine a frequency region in which data transmission is allowed. For example, only data transmissions smaller than or equal to the bandwidth of the configured RAB may be allowed, or only data transmissions greater than or equal to the bandwidth of the configured RAB may be allowed.
  • the communication unit 410 may transmit data in the time domain determined based on the RAW.
  • RAW may indicate a time domain in which data transfer is permitted.
  • the frequency region determined based on the RAB interval may be any one of a frequency region less than or equal to the bandwidth set by the RAB interval and a frequency region greater than or equal to the bandwidth set by the RAB interval.
  • the communication unit 410 may transmit data in a specific bandwidth and a specific time section. For example, data transmissions less than or equal to (or greater than or equal to) the bandwidth set by the RAB interval may be performed only in the time interval determined by RAW.
  • 5 to 6 are diagrams illustrating an example for describing a method of allocating resources according to an embodiment.
  • STAs may transmit data only in predetermined time intervals 510 and 520 determined by RAW regardless of the channel or bandwidth used.
  • FIG. 6 illustrates a case in which a RAB interval is determined for STAs in a WLAN system and RAW is set based on the STA.
  • Each STA may transmit data in a time interval determined by RAW in a channel or bandwidth allocated thereto.
  • STA 1 transmits data only in the time domain of time interval 1 610 in the frequency domain of channel (CH) 1, and STA 2 only in the time domain of time interval 2 630 in the frequency domain of CH 2. Data can be transferred.
  • STA 3 may transmit data only in the time domain of time interval 3 630 in the frequency domain of CH 3
  • STA 4 may transmit data only in the time domain of time interval 4 640 in the frequency domain of CH 4. . Thereafter, STA 1 to STA 4 may transmit data in each channel and in each of the time domains 650-680 in the same process as above.
  • FIGS. 7A to 7B are diagrams for describing an example of a configuration of a duplication mode frame according to one embodiment.
  • 7A shows a 2 MHz duplication mode frame.
  • the 2MHz duplication mode frame may include a base frame 710 and a duplication frame 720 that is 90 degrees out of phase with the base frame 710.
  • the same frame is shifted by 90 ° with respect to the DC tone and transmitted through two bands.
  • the process of transmitting the duplication mode frame may include transmitting the base frame through the third band and simultaneously transmitting the duplication frame through the fourth band.
  • the receiving end receiving the duplication mode frame may perform demodulation even when receiving only a frame received in any one of the third band and the fourth band.
  • the basic frame 710 may have the same structure as the 1 MHz mode frame shown in FIG. 3. Accordingly, the basic frame 710 may include a short training field (STF), a long training field (LTF), and a SIG field.
  • STF short training field
  • LTF long training field
  • SIG SIG field
  • the SIG field of the 1 MHz mode frame may have a structure in which information about bandwidth is omitted.
  • the bandwidth When configuring a duplication mode frame based on 1 MHz bandwidth, it is necessary to insert information for defining the bandwidth. For example, some bits of 4 bits defined as reserved bits of the SIG field may be used to insert information about bandwidth. In this case, the information on the bandwidth may be information on which band of the frequency axis is used in the example illustrated in FIG. 7A. In addition, some of the lower bits of the scrambler sheet in the SERVICE field may be used to define bandwidth information.
  • Three bits may be required to define the bandwidth divided into 1, 2, 4, 8, and 16 [MHz].
  • the frame structure of the first bandwidth is a form in which information on multiple bandwidths is omitted, and a basic frame generated based on the first bandwidth may include information on the multiple bandwidths in a signal field or a service field.
  • 7B shows a 4 MHz duplication mode frame.
  • the 4MHz duplication mode frame may include a base frame 710 and three duplication frames 730 that are 180 degrees out of phase with the base frame 710.
  • an NDP type short CTS message may be generated based on a 1 MHz bandwidth.
  • the NDP type short CTS message has no field after "LTF2" in FIG. 7B.
  • 8A to 8B are diagrams for describing an example of a configuration of a duplication mode frame according to another embodiment.
  • 8A shows a 4 MHz duplication mode frame.
  • the 4MHz duplication mode frame may include a base frame 810 and a duplication frame 820 that is 90 degrees out of phase with the base frame 810.
  • the same frame is shifted by 90 ° with respect to a DC tone and transmitted through two bands.
  • the process of transmitting the duplication mode frame may include transmitting the base frame through the first band and simultaneously transmitting the duplication frame through the second band.
  • the receiving end receiving the duplication mode frame may perform demodulation even when receiving only a frame received in one of the first band and the second band.
  • the basic frame 810 may have the same structure as the 2 MHz mode frame shown in FIG. 4. Accordingly, the basic frame 810 may include a short training field (STF), a long training field (LTF), and a SIG field.
  • STF short training field
  • LTF long training field
  • SIG SIG field
  • 8B shows an 8 MHz duplication mode frame.
  • the 8 MHz duplication mode frame may include a base frame 810 and three duplication frames 830 that are 180 degrees out of phase with the base frame 810.
  • Four frames included in the 8 MHz duplication mode frame may be simultaneously transmitted through four different bands.
  • the receiving end receiving the duplication mode frame may perform demodulation or detection even when receiving only one frame among the frames transmitted through four different bands.
  • the 16 MHz duplication mode frame has a structure in which an 8 MHz duplication mode frame is repeated twice on the frequency axis.
  • the duplication mode frame structure shown in FIGS. 8A through 8B may be used for a request to send (RTS) and a "null data packet (NDP) type short clear to send (CTS) message transmission" having no data portion.
  • RTS request to send
  • NDP nucleic acid packet
  • CTS short clear to send
  • FIG. 9 is a flowchart illustrating an operation of a resource allocation method in a WLAN system according to an embodiment.
  • the apparatus for allocating a resource may check a situation of a basic service set including an access point and at least one station.
  • the apparatus for allocating a resource may check the vulnerabilities of the OBSS such as a periodic silent section.
  • the apparatus for allocating a resource may determine a restricted access bandwidth (RAB) interval based on at least one of the plurality of bandwidths or one partial bandwidth of the plurality of bandwidths.
  • the RAB section represents the monopoly section on the frequency axis. Based on the RAB interval, the frequency region in which the station is allowed to access may be determined. For example, only data transmissions smaller than or equal to the bandwidth of the configured RAB may be allowed, or only data transmissions greater than or equal to the bandwidth of the configured RAB may be allowed.
  • the apparatus for allocating resources may determine the RAB interval based on the context information about the OBSS.
  • the resource allocation apparatus may determine any one bandwidth or any one partial bandwidth among the plurality of bandwidths based on the situation of the basic service set.
  • the apparatus for allocating resources may determine the RAB interval based on the determined one bandwidth or one partial bandwidth.
  • the apparatus for allocating resources may identify an available bandwidth by periodically setting a silent section to measure interference from the OBSS.
  • the apparatus for allocating a resource may set a restricted access window (RAW) in the time domain based on the determined RAB interval.
  • RAW is a monopoly section on the time axis, and represents a predetermined time interval in which only specific STA (s) are allowed access.
  • the RAW may determine a time domain in which the STA is allowed to access.
  • the apparatus for allocating a resource may control the STA to access the data transmission in a specific bandwidth only in a specific time interval by setting RAW in the RAB interval. For example, since RAW is set in the RAB interval, the time interval entry of the RAW may be allowed only for data transmission that is smaller than or equal to (or greater than or equal to) the bandwidth set. Accordingly, the utilization rate of frequency resources in terms of the overall BSS can be improved.
  • the resource allocation apparatus may set the priority of RAW based on the bandwidth used by the STA.
  • the resource allocation apparatus may assign STAs by grouping them according to the priority of RAW.
  • the resource allocation apparatus may set the RAW for the STA so that the STA (s) using the larger bandwidth is given priority in time within the beacon period.
  • the apparatus for allocating a resource may transmit information about the RAB interval and the RAW to the STA.
  • the resource allocation apparatus may arrange the data in units of slots.
  • the resource allocation apparatus may simultaneously perform a plurality of bandwidth transmissions without overlapping on the frequency axis.
  • the apparatus for allocating resources may transmit information about the RAB interval to the STA at every slot start time using a duplication mode frame or a sync frame.
  • the resource allocation apparatus may store information on an available frequency range in a signal field or scrambling seed of a basic unit in duplication mode prime.
  • FIG. 10 is a flowchart illustrating an operation of a communication method in a WLAN system according to an embodiment.
  • the communication terminal may receive information regarding a restricted access bandwidth (RAB) interval and a restricted access window (RAW) from the access point.
  • a frequency domain in which data transmission is allowed may be determined through the RAB interval.
  • RAW may indicate a time domain in which data transfer is permitted.
  • the communication terminal may extract information about the RAB interval in a duplication mode frame or a synchronization frame received from the access point at every slot start time.
  • the communication terminal may determine a frequency region to which access is allowed based on the RAB interval, and determine whether communication is possible in the determined frequency region.
  • the communication terminal may transmit data in the time domain determined based on the RAW.
  • the frequency region determined based on the RAB interval may be any one of a frequency region less than or equal to the bandwidth set by the RAB interval and a frequency region greater than or equal to the bandwidth set by the RAB interval.
  • the method according to the embodiment may be embodied in the form of program instructions that can be executed by various computer means and recorded in a computer readable medium.
  • the computer readable medium may include program instructions, data files, data structures, etc. alone or in combination.
  • the program instructions recorded on the media may be those specially designed and constructed for the purposes of the embodiments, 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 embodiments, and vice versa.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé et un dispositif d'attribution de ressource dans un système de réseau local sans fil. Un procédé d'attribution d'une ressource selon un mode de réalisation peut consister à : déterminer une section de bande passante à accès restreint (RAB) sur la base d'au moins une bande passante parmi une pluralité de bandes passantes ou une bande passante partielle de celles-ci ; et définir une fenêtre d'accès restreint (RAW) dans un domaine temporel basé sur la section de RAB.
PCT/KR2013/009530 2012-10-24 2013-10-24 Procédé et dispositif d'attribution de ressource dans un système de réseau local sans fil, procédé de terminal de communication et terminal de communication Ceased WO2014065611A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US14/438,184 US9794929B2 (en) 2012-10-24 2013-10-24 Method and device for allocating resource in wireless LAN system, communication terminal method and communication terminal
US15/706,159 US10342011B2 (en) 2012-10-24 2017-09-15 Method and device for allocating resource in wireless LAN system, communication terminal method and communication terminal
US16/418,764 US10897759B2 (en) 2012-10-24 2019-05-21 Method and device for allocating resource in wireless LAN system, communication terminal method and communication terminal

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
KR20120118327 2012-10-24
KR10-2012-0118327 2012-10-24
US201261746072P 2012-12-26 2012-12-26
US61/746,072 2012-12-26
KR10-2013-0127273 2013-10-24
KR1020130127273A KR102167884B1 (ko) 2012-10-24 2013-10-24 무선랜 시스템에서의 자원 할당 방법 및 장치, 통신 방법 및 통신 단말

Related Child Applications (2)

Application Number Title Priority Date Filing Date
US14/438,184 A-371-Of-International US9794929B2 (en) 2012-10-24 2013-10-24 Method and device for allocating resource in wireless LAN system, communication terminal method and communication terminal
US15/706,159 Continuation US10342011B2 (en) 2012-10-24 2017-09-15 Method and device for allocating resource in wireless LAN system, communication terminal method and communication terminal

Publications (1)

Publication Number Publication Date
WO2014065611A1 true WO2014065611A1 (fr) 2014-05-01

Family

ID=50544918

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2013/009530 Ceased WO2014065611A1 (fr) 2012-10-24 2013-10-24 Procédé et dispositif d'attribution de ressource dans un système de réseau local sans fil, procédé de terminal de communication et terminal de communication

Country Status (1)

Country Link
WO (1) WO2014065611A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016003370A1 (fr) * 2014-07-01 2016-01-07 Mediatek Singapore Pte. Ltd. Protocole de communications multiunivoques
CN107852736A (zh) * 2015-07-14 2018-03-27 索尼公司 用于对共享传输介质的依赖于带宽的接入协调的方法和设备
CN116210318A (zh) * 2020-08-04 2023-06-02 佳能株式会社 通信装置、通信装置的控制方法和程序

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100479865B1 (ko) * 2002-11-27 2005-03-31 한국전자통신연구원 경쟁 기반 매체 접근 제어를 이용하는 통신 시스템에서의충돌 완화 방법
KR20060057459A (ko) * 2004-11-23 2006-05-26 삼성전자주식회사 폴링 기반무선 랜 시스템의 패킷 처리 방법 및 수퍼프레임의 스케줄링 방법
US20080159327A1 (en) * 2006-12-29 2008-07-03 Nokia Corporation Apparatus, methods and computer program products providing temporary link quality modification for multiradio control
WO2011100540A1 (fr) * 2010-02-12 2011-08-18 Interdigital Patent Holdings, Inc. Contrôle d'accès et contrôle de congestion dans des communications de machine à machine
KR20120081179A (ko) * 2009-10-02 2012-07-18 노키아 지멘스 네트웍스 오와이 경쟁 기반 리소스들을 사용하는 전송을 위한 리소스 설정 제어

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100479865B1 (ko) * 2002-11-27 2005-03-31 한국전자통신연구원 경쟁 기반 매체 접근 제어를 이용하는 통신 시스템에서의충돌 완화 방법
KR20060057459A (ko) * 2004-11-23 2006-05-26 삼성전자주식회사 폴링 기반무선 랜 시스템의 패킷 처리 방법 및 수퍼프레임의 스케줄링 방법
US20080159327A1 (en) * 2006-12-29 2008-07-03 Nokia Corporation Apparatus, methods and computer program products providing temporary link quality modification for multiradio control
KR20120081179A (ko) * 2009-10-02 2012-07-18 노키아 지멘스 네트웍스 오와이 경쟁 기반 리소스들을 사용하는 전송을 위한 리소스 설정 제어
WO2011100540A1 (fr) * 2010-02-12 2011-08-18 Interdigital Patent Holdings, Inc. Contrôle d'accès et contrôle de congestion dans des communications de machine à machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016003370A1 (fr) * 2014-07-01 2016-01-07 Mediatek Singapore Pte. Ltd. Protocole de communications multiunivoques
US10038543B2 (en) 2014-07-01 2018-07-31 Mediatek Singapore Pte. Ltd. Many to one communications protocol
CN107852736A (zh) * 2015-07-14 2018-03-27 索尼公司 用于对共享传输介质的依赖于带宽的接入协调的方法和设备
CN116210318A (zh) * 2020-08-04 2023-06-02 佳能株式会社 通信装置、通信装置的控制方法和程序

Similar Documents

Publication Publication Date Title
WO2011159135A2 (fr) Procédé et appareil de regroupement de ressources de canal de commande dans un système de communication mobile
WO2013169074A1 (fr) Procédé et appareil pour l'émission et la réception d'informations de configuration de trame dans un système de communication sans fil tdd
WO2012134155A2 (fr) Procédé et dispositif pour accès aléatoire dans un système de communication mobile
WO2014119957A1 (fr) Procédé et appareil pour fournir une référence de temps commune dans un système de communication sans fil
WO2010131914A2 (fr) Appareil et procédé de transfert intercellulaire dans système de communication sans fil
WO2010005262A2 (fr) Procédé et appareil de partage de ressources basées sur les trames dans un système de radiocommunication cognitif
WO2021029547A1 (fr) Procédé et appareil de transmission et de réception de réponse harq dans un système de communication prenant en charge une communication de liaison latérale
WO2013062310A1 (fr) Procédé pour permettre à une station de base de prendre en charge une communication de dispositif à dispositif (d2d) dans un système de communication sans fil, et procédé pour permettre à un dispositif d2d d'émettre efficacement un signal de requête de communication d2d
WO2016182385A1 (fr) Procédé et dispositif d'exécution d'un processus d'accès aléatoire dans une bande sans licence
WO2016085287A1 (fr) Procédé d'accès aléatoire et appareil pour celui-ci
WO2014137170A1 (fr) Procédé et appareil pour émettre/recevoir un signal associé à une communication de dispositif à dispositif dans un système de communication sans fil
WO2010143846A2 (fr) Procédé permettant à un équipement utilisateur d'effectuer un accès aléatoire dans un système de communication mobile avec regroupement de porteuses
WO2016006898A1 (fr) Procédé et appareil pour accéder à un canal à large bande dans un système de réseau local (lan) sans fil
KR102167884B1 (ko) 무선랜 시스템에서의 자원 할당 방법 및 장치, 통신 방법 및 통신 단말
WO2016021945A1 (fr) Procédé et dispositif pour communiquer dans une bande non autorisée
WO2016208927A1 (fr) Procédé et dispositif de transmission en liaison montante dans une bande de fréquence sans licence
WO2009104887A2 (fr) Appareil et procédé de commutation de canal dans des conditions de réseau sans fil
WO2020159225A1 (fr) Procédé et dispositif de communication de diffusion de groupe de liaison latérale
WO2018030614A1 (fr) Procédé et dispositif de transmission de signaux utilisant une structure à ressources variables
WO2021085943A1 (fr) Procédé et dispositif d'allocation de ressource de liaison latérale dans un système de communication
WO2012134123A2 (fr) Structure de sous-trame de liaison terrestre dans un système de communication mobile et son procédé de transmission d'informations
WO2019194603A1 (fr) Procédé et dispositif pour atténuer une interférence dans une bande sans licence
WO2016036181A1 (fr) Procédé de communication dans une bande sans licence et appareil utilisant le procédé
WO2016144129A1 (fr) Procédé pour recevoir des données dans une bande non autorisée et dispositif l'utilisant
WO2014065611A1 (fr) Procédé et dispositif d'attribution de ressource dans un système de réseau local sans fil, procédé de terminal de communication et terminal de communication

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13848215

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 14438184

Country of ref document: US

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13848215

Country of ref document: EP

Kind code of ref document: A1