WO2022059359A1 - 基地局、通信装置及び通信方法 - Google Patents
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- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/022—Site diversity; Macro-diversity
- H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
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- H04W72/27—Control channels or signalling for resource management between access points
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- H—ELECTRICITY
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
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Definitions
- This disclosure relates to base stations, communication devices and communication methods.
- IEEE 802.11ax Next-generation wireless local area networks
- LAN Local Area Network
- IEEE802.ax is also called High Efficiency (HE)
- EHT Extream High Throughput
- IEEE 802.11-19 / 0804r0 Multi-AP Transmission Procedure IEEE 802.11-19 / 1788r1, Coordinated OFDMA Operation IEEE 802.11-19 / 1102r0, A unified transmission procedure for multi-AP coordination IEEE 802.11-20 / 0033r1, coordinated spatial reuse operation IEEE 802.11-20 / 0576r1, Coordinated Spatial Reuse Protocol
- the non-limiting examples of the present disclosure contribute to the provision of a base station, a communication device, and a communication method capable of improving communication efficiency in cooperative communication.
- the base station includes a control circuit that determines a control signal format based on the type of cooperative communication, a transmission circuit that transmits the control signal to another base station by the format, and a transmission circuit. Equipped with.
- communication efficiency in cooperative communication can be improved.
- FIG. 1 Figure showing an example of Multi-AP (MAP) Trigger frame format Diagram showing a configuration example of MAP Diagram showing an example of notification information for each MAP type
- FIG. 1 Block diagram showing a configuration example of AP according to the first embodiment
- Block diagram showing a configuration example of STA according to the first embodiment The figure which shows an example of the MAP Trigger frame format which concerns on Embodiment 1.
- Figure showing an example of defining the Frame Control field Diagram showing an example of MAP type definition Diagram showing an example of MAP type definition
- Diagram showing a definition example of Trigger Type subfield The figure which shows an example of the MAP Trigger frame format which concerns on Embodiment 3.
- Diagram showing a definition example of Trigger Type subfield The figure which shows an example of the MAP Trigger frame format which concerns on Embodiment 4.
- Diagram showing definition examples of Total MAP Type and MAP Type Index The figure which shows an example of the MAP Trigger frame format which concerns on Embodiment 7.
- AP Access Point
- STA Station, or also called “non-AP STA”
- MAP multi-AP
- cooperative communication for transmitting and receiving data has been studied (for example, Non-Patent Documents 1 to 5).
- C-SR Coordinated Spatial Reuse
- C-OFDMA Coordinated Orthogonal Frequency Division Multiple Access
- JT Joint Transmissions
- CBF Coordinated Beamforming
- JT includes, for example, a method of transmitting the same signal from a plurality of cooperating APs and a method of transmitting different transmission streams from a plurality of cooperating APs.
- a method of transmitting different transmission streams from a plurality of cooperating APs is called, for example, Distributed MultiUser-MultipleInputMultipleOutput (D-MIMO).
- D-MIMO Distributed MultiUser-MultipleInputMultipleOutput
- JT is defined as a method of transmitting the same signal from a plurality of cooperating APs, and may be defined as a method different from "D-MIMO".
- a method of transmitting the same signal from a plurality of cooperating APs is defined as "JT”
- a method of transmitting different transmission streams from a plurality of cooperating APs is defined as "D-MIMO”.
- a MAP Trigger frame (or sometimes called a MAP Announcement frame) format is being studied.
- the control procedure for each MAP type or the information (notification information) notified from the AP to the STA is examined.
- FIG. 1 is a diagram showing an example of a MAP Trigger frame format based on the Trigger frame format in 11ax. As shown in FIG. 1, for example, "Per AP Info" which is information (or a field) for each AP may be defined.
- FIG. 2 is a diagram showing a configuration example (MAP configuration example) of AP and STA that perform cooperative communication.
- the “Sharing AP” may be, for example, an AP that acquires a channel use (or transmission) period (for example, TXOP: transmission opportunity) and starts (or controls) cooperative communication.
- the "Shared AP” may be an AP instructed to perform cooperative communication by the Sharing AP.
- the MAP Trigger frame may be transmitted from the Sharing AP to the Shared AP.
- the Sharing AP may instruct the Shared AP to control (for example, start) the cooperative communication.
- the MAP Trigger frame may include, for example, information for each Shared AP (for example, Per AP Info).
- a method of controlling a plurality of MAP types in an integrated and efficient manner in a MAP Trigger frame for example, setting of a MAP Trigger frame format
- the wireless communication system may include a plurality of AP100s and STA200s.
- the AP100 may have both the functions of a Sharing AP and a Shared AP, for example, or may have either of the functions.
- the AP100 which is a Sharing AP may notify another AP100 which is a Shared AP of the MAP type (for example, C-SR, C-OFDMA, JT, CBF or D-MIMO) in the MAPTrigger frame.
- the "notification” may be read as "sending” or "instruction”.
- the AP100 which is a Sharing AP, determines (or changes) the format of the MAPTrigger frame based on the MAP type, and transmits the MAPTrigger frame to another AP100, which is a Shared AP, according to the determined format. good.
- the parameters (or notification information) notified from the Sharing AP to the Shared AP in the MAP Trigger frame include parameters that do not depend on the MAP type (or parameters that are common to multiple MAP types) and MAP types.
- Dependent parameters may be included.
- the term “dependent” on the MAP type may be read as “based” on the MAP type, for example.
- the term “independent” of the MAP type may be read as another term, for example, "independent” or "independent” of the MAP type.
- ⁇ BW bandwidth: bandwidth
- ⁇ MAP type information indicating the type of cooperative communication
- -Shared AP ID Shared AP identification information
- UL Uplink
- DL downlink
- Flag information indicating either UL or DL
- -Resource Allocation resource allocation information
- FIG. 3 shows an example of parameters depending on the MAP type.
- the parameter corresponding to “ ⁇ ” indicates the parameter notified by the MAP Trigger frame in the corresponding MAP type.
- Sharing AP and Shared AP for example, Sharing AP TxPower and Shared AP Maximum TxPower
- the allowable interference level for example, Sharing AP Acceptable Maximum Interference Level
- Shared AP Interference Level may be notified.
- transmission parameters such as Modulation and Coding Scheme (MCS), Sequence Number, and Spatial Stream Index may be notified.
- the ID of the STA for example, STAID to Suppress
- the resource allocation information STAResourceAllocationInfo to Suppress
- the above-mentioned parameters that are independent of the MAP type and parameters that depend on the MAP type are examples, and may be other parameters.
- FIG. 4 is a block diagram showing a partial configuration example of the AP100 according to the embodiment of the present disclosure.
- the control unit 101 determines the format of the control signal (for example, MAP Trigger frame) based on the type of cooperative communication (for example, MAP type).
- the wireless transmission / reception unit 105 (for example, corresponding to a transmission circuit) transmits a control signal to another base station (for example, Shared AP) in the above format.
- FIG. 5 is a block diagram showing a configuration example of the AP100.
- the AP100 shown in FIG. 5 includes, for example, a control unit 101, a control signal generation unit 102 for STA, a control signal generation unit 103 for AP, a transmission signal generation unit 104, a wireless transmission / reception unit 105, and reception signal demodulation / decoding. Section 106 and may be included.
- the control unit 101 may control, for example, the setting of the MAP Trigger frame.
- the control unit 101 may control the generation of a control signal (for example, a MAP Trigger frame) for another AP100 (for example, a Shared AP).
- the control unit 101 may determine the MAP Trigger frame format based on the MAP type.
- the control unit 101 specifies the format of the MAPTrigger frame based on the information about the MAP type in the MAPTrigger frame transmitted from another AP100 (for example, Sharing AP). You can do it.
- control unit 101 may set control information for, for example, the STA200 or another AP100.
- control unit 101 may set resource allocation information for each STA 200 and scheduling information such as MCS.
- control unit 101 is, for example, based on the information input from the received signal demodulation / decoding unit 106 (for example, the control information notified from the Sharing AP to the Shared AP), and the parameters related to the transmission control (for example, the above-mentioned cooperation). Communication parameters) may be determined.
- the control unit 101 may output, for example, control information including the determined transmission control parameter to the control signal generation unit 102 for STA and the control signal generation unit 103 for AP.
- the control signal generation unit 102 for STA may generate, for example, a control signal for STA200 (for example, Trigger frame) and output the generated control signal to the transmission signal generation unit 104.
- a control signal for STA200 for example, Trigger frame
- the control signal generation unit 103 for AP may generate, for example, a control signal for AP100 (for example, a MAP Trigger frame).
- the control signal generation unit 103 for AP may generate a control signal based on the control information input from the control unit 101 and the information input from the received signal demodulation / decoding unit 106.
- the control signal for the AP100 includes, for example, time and frequency resource information (eg, RU allocation information for uplink coordinated communication, TXOP, LENGTH, etc.), as well as parameters related to coordinated communication (eg, the MAP type described above, etc.). At least one of MAP type-independent parameters or MAP type-dependent parameters) may be included.
- the control signal generation unit 103 for AP outputs, for example, the generated control signal to the transmission signal generation unit 104.
- the transmission signal generation unit 104 performs transmission processing on the control signal, data, and ACK / Block-ACK input from, for example, the control signal generation unit 102 for STA or the control signal generation unit 103 for AP, and wirelessly.
- a frame may be generated.
- the transmission signal generation unit 104 outputs the generated transmission signal to the wireless transmission / reception unit 105.
- the wireless transmission / reception unit 105 performs wireless transmission processing such as D / A conversion and up-conversion to the carrier frequency on the transmission signal input from the transmission signal generation unit 104, and the signal after the wireless transmission processing is used as an antenna. Send via.
- the AP100 may operate as follows, for example, when receiving an uplink signal transmitted from the STA200 or a control signal transmitted from another AP100.
- the wireless signal received via the antenna is input to the wireless transmission / reception unit 105.
- the wireless transmission / reception unit 105 performs wireless reception processing such as down-conversion of the carrier frequency on the received wireless signal, and outputs the signal after the wireless reception processing to the reception signal demodulation / decoding unit 106.
- the received signal demodulation / decoding unit 106 may perform processing such as autocorrelation processing on the signal input from the wireless transmission / reception unit 105 to extract the received wireless frame. Further, the received signal demodulation / decoding unit 106 may, for example, include an uplink signal (for example, a response signal or feedback information) from the STA200 included in the extracted wireless frame, or a control signal (for example, MAP) from another AP100. The Trigger frame) may be decoded and demodulated. The received signal demodulation / decoding unit 106 may output the demodulated control signal to the control unit 101, the control signal generation unit 102 for STA, and the control signal generation unit 103 for AP, for example.
- an uplink signal for example, a response signal or feedback information
- a control signal for example, MAP
- the received signal demodulation / decoding unit 106 may output the demodulated control signal to the control unit 101, the control signal generation unit 102 for STA, and the control signal generation unit 103
- FIG. 6 is a block diagram showing a configuration example of the STA 200 according to the present embodiment.
- the STA 200 shown in FIG. 6 may include, for example, a wireless transmission / reception unit 201, a reception signal demodulation / decoding unit 202, and a transmission signal generation unit 203.
- the wireless transmission / reception unit 201 receives the signal transmitted from the AP100 via the antenna, performs wireless reception processing such as down-conversion and A / D conversion to the received signal, and receives the signal after the wireless reception processing. Output to the demodulation / decoding unit 202. Further, the wireless transmission / reception unit 201 performs wireless transmission processing such as D / A conversion and up-conversion to the carrier frequency on the signal input from the transmission signal generation unit 203, and displays the signal after the wireless transmission processing. It may be transmitted via an antenna.
- the received signal demodulation / decoding unit 202 may perform processing such as autocorrelation processing on the signal input from the wireless transmission / reception unit 201 to extract the received wireless frame.
- the received signal demodulation / decoding unit 202 may, for example, demodulate and decode a control signal (for example, Trigger frame) included in the extracted wireless frame, and acquire uplink transmission control parameters.
- the received signal demodulation / decoding unit 202 may output, for example, the acquired uplink transmission control parameter to the transmission signal generation unit 203.
- the transmission signal generation unit 203 performs transmission signal processing on the uplink signal (for example, a response signal) based on the uplink transmission control parameter input from the reception signal demodulation / decoding unit 202, and performs transmission signal processing on the wireless frame (transmission). Signal) may be generated.
- the transmission signal generation unit 203 outputs, for example, the generated transmission signal to the wireless transmission / reception unit 201.
- the AP100 (Sharing AP) is placed in a common information (for example, Common Info) field containing information common to a plurality of Shared APs in a MAP Trigger frame, for example.
- the MAP type may be notified to other AP100s in the MAP type field.
- the MAP type (information indicating the type of cooperative communication) may be included in the field for notifying the MAP type in Common Info.
- "arrangement" may be read as another term such as “mapping” or "setting”.
- the AP100 is, for example, based on the MAP type notified to the plurality of Shared APs, the MAP type-dependent common information in the Common Info field (for example, MAP Type Dependent Common Info), and the individual individual to the plurality of Shared APs.
- the format of the MAP type dependent information (eg, MAPTypeDependentInfo) in the information (eg, PerAPInfo) field may be determined (or changed).
- FIG. 7 is a diagram showing an example of the MAP Trigger frame format according to the present embodiment.
- FIG. 8 is a diagram showing an example of the definition of Type and Subtype subfields in the Frame Control field.
- FIG. 8 shows an excerpt of the Control type in 11ax as an example.
- the Subtype of MAP Trigger is defined in the Subtype value “0001” which is the Reserved value in 11ax.
- the definition in the Frame Control field is not limited to the example shown in FIG. 8, and the Subtype value of MAP Trigger may be defined in another value (for example, another Reserved value).
- notification information (or common information) common to a plurality of Shared APs may be set in the Common Info field.
- Common information for a plurality of Shared APs includes, for example, common information that does not depend on the MAP type (or information that is common to a plurality of MAP types) and common information that depends on the MAP type (or information that differs depending on the MAP type).
- MAPTypeDependentCommonInfo may be included.
- the common information that does not depend on the MAP type may include, for example, information on the MAP type (MAPType) and the bandwidth (BW).
- MAPType information on the MAP type
- BW bandwidth
- the common information depending on the MAP type may include, for example, information such as Sharing AP Tx Power and Sharing AP Acceptable Maximum Interference Level.
- FIG. 9 and 10 are diagrams showing an example of the definition of the MAP type.
- the MAP type definition example shown in FIG. 9 (hereinafter referred to as “definition example 1”) is an example in which an index is assigned to each MAP type.
- the MAP type definition example shown in FIG. 10 (hereinafter referred to as “definition example 2”) is an index in which MAP types using similar parameters such as JT and D-MIMO are grouped into one and indexed. Is an example of giving.
- the definition example 2 of the MAP type can reduce the table size of the MAP type as compared with the definition example 1.
- individual notification information may be set in the Shared AP in the Per AP Info field.
- the individual information for each Shared AP may be, for example, information common to the STA200 associated with (or connected to) the Shared AP.
- the individual information for each Shared AP includes, for example, individual information that does not depend on the MAP type (or individual information that is common to multiple MAP types) and individual information that depends on the MAP type (or individual information that differs depending on the MAP type).
- MAPTypeDependentInfo may be included.
- Individual information that does not depend on the MAP type may include, for example, Shared APID, Resource Allocation, and UL / DL Flag.
- the individual information depending on the MAP type may include, for example, the following information.
- -For C-SR Shared AP Maximum Tx Power, Shared AP Interference Level -For JT or D-MIMO: Transmission Parameter (for example, MCS, Sequence Number, ...)
- ⁇ For CBF STA ID to Suppress, STA Resource Allocation Info to Suppress -For C-OFDMA: No information
- the BW in FIG. 7 may be the same as or different from the definition of "UL BW subfield" in the Common Info field of the Trigger frame format of 11ax, for example.
- the Resource Allocation in FIG. 7 may be the same as or different from the definition of “RU Allocation subfield” in the User Info field of the Trigger frame format of 11ax.
- the AP100 has a method in which the size and position of the RU are extended for the Spatial Configuration subfield of the RU Allocation subfield and the User Specific field defined in the Common field of HE-SIG-B of 11ax, or 11be. It may be determined based on the same method.
- a RU having a size of less than 20 MHz is defined, but the definition is not limited to this, and in the Resource Allocation, for example, a size of 20 MHz or more may be defined.
- the AP100 (SharingAP) notifies the other AP100 (SharedAP) of the MAP type by the MAP type field arranged in the CommonInfo field in the MAPTrigger frame.
- MAP type-dependent common information for example, MAP Type Dependent Common Info
- MAP Type Dependent Info MAP Type Dependent Info
- the AP100 can notify other AP100s of control signals corresponding to each of a plurality of MAP types, so that the efficiency of signaling can be improved. Therefore, according to the present embodiment, the communication efficiency in cooperative communication can be improved.
- AP100 may change the MAP type of MAP Trigger to another AP100 (Shared AP) in the Trigger Type field (for example, similar to Trigger for UL of 11ax). You may notify to.
- the MAP type (information indicating the type of cooperative communication) may be included in the field for notifying the Trigger type in Common Info.
- the AP100 is, for example, based on the MAP type notified to a plurality of Shared APs, the MAP type-dependent common information in the Common Info field (for example, MAP Type Dependent Common Info), and the MAP type in the Per AP Info field.
- the format of the dependency information (for example, MAPTypeDependentInfo) may be determined (or changed).
- FIG. 11 is a diagram showing an example of the MAP Trigger frame format according to the present embodiment. Further, FIG. 12 is a diagram showing an example of the definition of Trigger Type subfield.
- each of a plurality of MAP types may be defined with values 8 to 12.
- the Shared AP may specify (or recognize, determine) the MAP type in the Trigger Type in the Common Info field shown in FIG.
- the common information (for example, BW) in the Common Info field that does not depend on the MAP type may be the same as that of the first embodiment, for example.
- the Trigger type-dependent common information (for example, Trigger Type Dependent Common Info) in the Common Info field may be the same as, for example, the MAP type-dependent common information (MAP Type Dependent Common Info) of the first embodiment. ..
- the individual information (for example, SharedAPID, ResourceAllocation, UL / DLFlag) in the PerAPInfo field that does not depend on the MAP type may be the same as that of the first embodiment, for example.
- the Trigger type dependency information (for example, Trigger Type Dependent Info) in the Per AP Info field may be the same as, for example, the MAP type dependency information (for example, MAP Type Dependent Info) of the first embodiment.
- the AP100 notifies another AP100 of the MAP type of the MAP Trigger by the Trigger Type field in the MAP Trigger frame. Further, the AP 100 notifies other AP 100s of the Trigger type-dependent common information (Trigger Type Dependent Common Info) and the Trigger type-dependent information (Trigger Type Dependent Info) according to the MAP type notified in the Trigger Type field, for example.
- the formats of the Trigger type-dependent common information and the Trigger type-dependent information are changed based on the MAP type as in the first embodiment.
- the AP100 can notify other AP100s of control signals corresponding to each of a plurality of MAP types, so that the efficiency of signaling can be improved. Therefore, according to the present embodiment, the communication efficiency in cooperative communication can be improved.
- the AP100 When the MAP types of multiple Shared APs are common, the AP100 (Sharing AP) notifies the MAP Trigger to other AP100s (Shared APs), for example, in the Trigger Type field (for example, the same as the 11ax UL Trigger). It's okay. Further, the AP100 may notify the MAP type, for example, in the Trigger type-dependent common information (for example, Trigger Type Dependent Common Info) field. In other words, in CommonInfo, the information that triggers MAPcoordination (cooperative communication) is included in the field for notifying the trigger type, and the MAP type (information indicating the type of cooperative communication) is a field that depends on the Trigger type. include.
- the AP100 has a MAP type-dependent common information (for example, MAP Type Dependent) in the Trigger type-dependent common information (for example, Trigger Type Dependent Common Info) in the Common Info field based on the MAP type notified to a plurality of Shared APs.
- MAP type-dependent common information for example, MAP Type Dependent
- TriggerTypeDependentInfo TriggerTypeDependentInfo
- PerAPInfo fields may be determined (or changed).
- FIG. 13 is a diagram showing an example of the MAP Trigger frame format according to the present embodiment. Further, FIG. 14 is a diagram showing an example of the definition of Trigger Type subfield.
- MAP Multi-AP
- the Trigger Type subfield for example, Table 9-31b
- the Shared AP may recognize that the Trigger Type in Common Info shown in FIG. 13 is a MAP.
- the MAPType field may be arranged in the Trigger type-dependent common information (for example, TriggerTypeDependentCommonInfo) in the CommonInfo field.
- the Shared AP may specify (or recognize, determine) the MAP type in the MAP Type field in the Common Info field of the MAP Trigger frame whose Trigger Type is MAP, for example.
- the common information (for example, BW) in the Common Info field that does not depend on the MAP type may be the same as that of the first embodiment, for example.
- the MAP type-dependent common information (for example, MAP Type Dependent Common Info) in the Common Info field may be the same as, for example, the MAP type-dependent common information (MAP Type Dependent Common Info) of the first embodiment. ..
- the individual information (for example, SharedAPID, ResourceAllocation, UL / DLFlag) in the PerAPInfo field that does not depend on the MAP type may be the same as that of the first embodiment, for example.
- the MAP type-dependent information (for example, Trigger Type Dependent Info) in the Per AP Info field may be the same as, for example, the MAP type-dependent information (for example, MAP Type Dependent Info) of the first embodiment.
- the AP100 notifies other AP100s that the MAP is triggered by the TriggerType field in the MAPTrigger frame, and is included in the Trigger type-dependent common information (TriggerTypeDependentCommonInfo). Notify the MAP type to other AP100s in the MAPType field. Further, the AP100 notifies other AP100s of the Trigger type-dependent common information (Trigger Type Dependent Common Info) and the Trigger type-dependent information (Trigger Type Dependent Info) according to the MAP type to be notified, for example. In other words, in the MAP Trigger frame, the formats of the Trigger type-dependent common information and the Trigger type-dependent information are changed based on the MAP type.
- the AP100 can notify other AP100s of control signals corresponding to each of a plurality of MAP types, so that the efficiency of signaling can be improved. Therefore, according to the present embodiment, the communication efficiency in cooperative communication can be improved.
- the difference is that the notification of being a MAP Trigger and the notification of the MAP type are performed in the following fields.
- -Embodiment 1 MAP type in Frame Control and Common Info (MAP Type)
- -Embodiment 2 Trigger Type in Common Info
- -Embodiment 3 MAP Type in Common Info and Trigger Type Dependent Common Info.
- the format to be applied may be determined based on the definition area used in other uses different from the MAP setting.
- the MAP Trigger frame format of Form 1 may be applied.
- an unused area (for example, Reserved area) in the definition area of TriggerType subfield (for example, FIG. 12 or FIG. 14) is compared with the definition area of FrameControlsubtype (for example, FIG. 8).
- the MAP Trigger frame format of Embodiment 2 or 3 may be applied.
- the AP100 (Sharing AP) sets the MAP type for each of a plurality of Shared APs to another AP100 (Shared) in the MAP type (MAPType) field arranged in the Common Info field, for example. AP) may be notified.
- the MAP type (information indicating the type of cooperative communication) for each of the plurality of Shared APs may be included in the Common Info (for example, the MAP Type field).
- the AP100 has, for example, MAP type-dependent common information (for example, MAP Type Dependent Common Info) and MAP type-dependent information (for example, MAP Type Dependent Info) based on the MAP type notified for each of a plurality of Shared APs. You may decide (or change) the format of.
- MAP type-dependent common information for example, MAP Type Dependent Common Info
- MAP type-dependent information for example, MAP Type Dependent Info
- FIG. 15 is a diagram showing an example of the MAP Trigger frame format according to the present embodiment.
- the MAP type of each of a plurality of Shared APs (for example, AP # 1, AP # 2, ...) Is set (in other words, in other words) in the MAP type (MAP Type) field in the Common Info field. , Instructions).
- the frame shown in FIG. 15 is a MAP Trigger may be notified to the Shared AP by the Frame Control as in the first embodiment, or may be notified to the Shared AP by the Trigger Type as in the second or third embodiment. May be notified to.
- the common information (for example, BW) in the Common Info field that does not depend on the MAP type may be the same as that of the first embodiment, for example.
- the MAP type-dependent common information (for example, MAP Type Dependent Common Info) in the Common Info field may be the same as, for example, the MAP type-dependent common information (MAP Type Dependent Common Info) of the first embodiment. ..
- the MAP type-dependent common information fields include Sharing AP Tx Power and Sharing AP Acceptable Maximum Interference. Level may be included.
- any of the MAP types of multiple Shared APs notified by the MAP Trigger frame is of a different type from "C-SR" (for example, either C-OFDMA, JT, CBF or D-MIMO). If so, the MAP type-dependent common information field does not have to contain notification information.
- the individual information (for example, SharedAPID, ResourceAllocation, UL / DLFlag) in the PerAPInfo field that does not depend on the MAP type may be the same as that of the first embodiment, for example.
- the MAP type-dependent information (for example, MAPTypeDependentInfo) in the PerAPInfo field may be the same as, for example, the MAP type-dependent information (for example, MAPTypeDependentInfo) of the first embodiment.
- the AP100 notifies other AP100s of the MAP type for each of a plurality of Shared APs by the MAP Type field arranged in the Common Info field in the MAP Trigger frame. Further, the AP100 notifies other AP100s of, for example, MAP type-dependent common information (MAP Type Dependent Common Info) and MAP type-dependent information (MAP Type Dependent Info) according to the MAP type.
- MAP Type Dependent Common Info MAP Type Dependent Common Info
- MAP Type Dependent Info MAP type-dependent information
- the formats of the MAP type-dependent common information and the MAP type-dependent information are changed based on the MAP types of a plurality of Shared APs.
- the AP100 can notify other AP100s of control signals corresponding to each of the plurality of MAP types even if the MAP types are different among the plurality of Shared APs, so that the efficiency of signaling can be improved. Therefore, according to the present embodiment, the communication efficiency in cooperative communication can be improved.
- AP100 may notify another AP100 (Shared AP) of the MAP type for each of a plurality of Shared APs in the Per AP Info field, for example.
- the MAP type (information indicating the type of cooperative communication) for each of the plurality of Shared APs may be included in the Per AP Info (for example, individual information).
- the AP100 may determine (or change) the format of the MAP type dependent information (for example, MAPTypeDependentInfo) based on the MAP type notified for each of a plurality of Shared APs.
- MAPTypeDependentInfo for example, MAPTypeDependentInfo
- FIG. 16 is a diagram showing an example of the MAP Trigger frame format according to the present embodiment.
- the MAP type of each of a plurality of Shared APs may be set (in other words, instructed) in the MAP type (MAP Type) field in the Per AP Info field.
- the frame shown in FIG. 16 is a MAP Trigger may be notified to the Shared AP by the Frame Control as in the first embodiment, or may be notified to the Shared AP by the Trigger Type as in the second or third embodiment. May be notified to.
- the Common Info field may include, for example, common information that is common to a plurality of Shared APs and does not depend on the MAP type.
- Common information that does not depend on the MAP type may include, for example, information about bandwidth (BW).
- individual information for each Shared AP may be set in the Per AP Info field.
- the individual information for each Shared AP may include, for example, individual information that does not depend on the MAP type and individual information that depends on the MAP type.
- the individual information that does not depend on the MAP type may include, for example, Shared APID (APID), MAPType, ResourceAllocation, and UL / DLFlag.
- APID Shared APID
- MAPType MAPType
- ResourceAllocation ResourceAllocation
- UL / DLFlag UL / DLFlag
- the individual information depending on the MAP type may include, for example, the following information.
- -For C-SR Shared AP Tx Power, Sharing AP Acceptable Maximum Interference Level, Shared AP Maximum Tx Power, Shared AP Interference Level -For JT or D-MIMO: Transmission Parameter (for example, MCS, Sequence Number, ...)
- MCS Mobile Broadband Code Division Multiple Access
- PerAPInfo field length may be, for example, a fixed length or a variable length.
- size of Per APInfo (individual information) may be common among MAP types or may differ for each MAP type.
- the MAP type dependent information may be set to a constant length regardless of the MAP type.
- the PerAPInfo field length may be set based on the format of the larger size (eg, maximum size) of the PerAPInfo field lengths corresponding to each MAP type (eg, aligned). good). For example, if the size of the MAP type dependency information corresponding to a certain MAP type is shorter than the fixed length of the Per AP Info field, the remaining area may be set in the Reserved field.
- each Shared AP can specify the placement position of the MAP type-dependent information corresponding to the Shared AP regardless of the MAP type of another Shared AP, so that the Per AP Info can be specified. (For example, reading process) can be simplified.
- the length of the MAP type dependent information may be set based on the MAP type.
- the Shared AP may specify, for example, the Per AP Info field length for each Shared AP based on the MAP type of the Per AP Info corresponding to each Shared AP.
- the Per AP Info field length is variable length
- MAP type dependency information of the size corresponding to the MAP type set for each Shared AP is notified, so signaling is performed compared to the case where the Per AP Info field has a fixed length. The amount can be reduced.
- the AP100 notifies other AP100s of the MAP type for each of a plurality of Shared APs by the MAP Type field arranged in the Per AP Info field in the MAP Trigger frame. Further, the AP100 notifies another AP100 of, for example, MAP type dependency information (MAPTypeDependentInfo) according to the MAP type. In other words, in the MAP Trigger frame, the format of the MAP type dependency information is changed based on the MAP type of a plurality of Shared APs.
- MAPTypeDependentInfo MAP type dependency information
- the AP100 can notify other AP100s of control signals corresponding to each of the plurality of MAP types even if the MAP types are different among the plurality of Shared APs, so that the efficiency of signaling can be improved. Therefore, according to the present embodiment, the communication efficiency in cooperative communication can be improved.
- FIG. 17 is a diagram showing a comparative example of processing complexity and signaling amount regarding the MAP Trigger frame format of each of the fourth and fifth embodiments.
- FIG. 17 shows the case where the Per AP Info field length has a variable length in the fourth embodiment, and shows the case where the Per AP Info field length has a fixed length and a variable length in the fifth embodiment.
- the processing complexity can be reduced and the signaling amount can be increased.
- the processing complexity can be increased and the signaling amount can be reduced. ..
- a format in which the Per APInfo field length of the fifth embodiment has a fixed length may be applied (or selected).
- the format in which the Per APInfo field length of the fifth embodiment has a variable length may be applied (or selected).
- the format of the fourth embodiment may be applied (or selected).
- the Sharing AP determines the resource allocation for each STA associated with (or connected to) the Shared AP.
- AP100 is, for example, a "PerSTAInfo" field (or terminal individual information) which is individual information for each STA200 arranged in the PerAPInfo field.
- the MAP type may be notified to the Shared AP.
- the MAP type (information indicating the type of cooperative communication) for each STA200 may be included in PerSTAInfo (for example, terminal individual information).
- the AP100 may determine (or change) the format of the MAP type dependent information (for example, MAPTypeDependentInfo) in the PerSTAInfo field based on, for example, the MAP type for each of a plurality of STA200s.
- the MAP type dependent information for example, MAPTypeDependentInfo
- FIG. 18 is a diagram showing an example of the MAP Trigger frame format according to the present embodiment.
- the Common Info field there is information (“# of STAs”) regarding the number of STA200s associated with each of a plurality of Shared APs (for example, AP # 1, AP # 2, ). May be included.
- the number of PerSTAInfo fields arranged in each PerAPInfo field may be determined based on the information regarding the number of the STA200.
- the number of STAs for each Shared AP may be specified in the Common Info field.
- the number of STAs common to a plurality of Shared APs (for example, the maximum number of STAs) is specified, and Shared APs less than the specified number of STAs may be filled with Padding.
- FIG. 18 shows, for example, a case where information regarding the number of STAs is included in CommonInfo, but it may be arranged in PerAPInfo.
- the MAP type is not limited to the case where it is set in the PerSTAInfo field in the PerAPInfo field, and may be used in combination with the method of the first embodiment, for example.
- information about the entire MAP type for example, “Total MAP Type”
- PerSTAInfo information regarding the identification of the MAP type for each Shared AP may be notified to the Shared AP from the entire MAP type (Total MAP Type) notified in Common Info.
- FIG. 19 is a diagram showing a method of using the above-mentioned MAP type designation in combination with the method of the first embodiment.
- FIG. 20 is a diagram showing an example of the definition of TotalMAPType in the CommonInfo field and an example of the definition of MAPTypeIndex in the PerSTAInfo field.
- TotalMAPType for example, a plurality of MAPTypeElements (for example, MAPTypeElement1, 2, ...) may notify that a plurality of MAP types are mixed.
- MAPTypeElement for example, any one of a plurality of MAP types (any of 0 to 4 in the example of FIG. 20) may be set.
- the MAPTypeIndex may notify, for example, the MAPTypeElement corresponding to the MAP type of each STA200.
- the Shared AP may specify the MAP type corresponding to each STA200 according to the following formula, for example, based on the MAP Type Index.
- MAP Type Index variant MAP Type Element (MAP Type Index value + 1)
- MAPTypeIndex 1
- the SharedAP specifies, for example, the MAP type corresponding to the MAPTypeElementvalue of MAPTypeElement2 in TotalMAPType. It's okay.
- the relationship between TotalMAPType and MAPTypeIndex is not limited to the relationship shown in FIG. 20, and may be another relationship.
- individual individual information may be set in STA200, for example, in PerSTAInfo in the PerAPInfo field.
- the individual information for each STA200 includes, for example, individual information that does not depend on the MAP type (in other words, information common to multiple MAP types) and individual information that depends on the MAP type (in other words, information that differs depending on the MAP type). May be included.
- the individual information that does not depend on the MAP type may include, for example, the STA ID (STAID), MAPType, ResourceAllocation, and UL / DLFlag.
- the individual information depending on the MAP type may include the following information as in the fifth embodiment.
- -For C-SR Shared AP Tx Power, Sharing AP Acceptable Maximum Interference Level, Shared AP Maximum Tx Power, Shared AP Interference Level -For JT or D-MIMO: Transmission Parameter (for example, MCS, Sequence Number, ...)
- MCS Mobile Broadband Code Division Multiple Access
- the Medium Access Control (MAC) address (48 bits) may be used as an instruction to the STA 200 that is not associated with the Shared AP.
- an STA identifier called "ShortID" which has a smaller number of bits than the MAC address, may be defined. This can reduce the STAID overhead.
- the Short ID may be defined by being included in the Association ID (AID) defined in 11ax, for example, or may be assigned to the Reserved of AID 12.
- the field length of PerSTAInfo may be a fixed length or a variable length as in the PerAPInfo field of the fifth embodiment, as shown in FIGS. 18 and 19, for example.
- the size of PerSTAInfo may be common among MAP types or may differ for each MAP type.
- the processing complexity and the signaling amount when the field length of Per STA Info is fixed length and variable length are the same as those of Per AP Info of the fifth embodiment.
- FIGS. 18 and 19 The ID of the Shared AP (for example, AP ID) in the Per AP Info field shown in may be omitted.
- the AP100 notifies other AP100s of the MAP type for each of a plurality of STA200s by the MAPType field arranged in the PerSTAInfo field in the MAPTrigger frame. Further, the AP100 notifies another AP100 of, for example, MAP type dependency information (MAPTypeDependentInfo) according to the MAP type. In other words, in the MAP Trigger frame, the format of the MAP type dependent information is changed based on the MAP types of a plurality of STA200s.
- MAPTypeDependentInfo MAP type dependency information
- the AP100 can notify other AP100s of control signals corresponding to each of the plurality of MAP types even if the MAP types are different among the plurality of STA200s, so that the efficiency of signaling can be improved. Therefore, according to the present embodiment, the communication efficiency in cooperative communication can be improved.
- the Sharing AP determines the resource allocation for each STA associated with (or connected to) the Shared AP has been described, but the present invention is not limited to this, and for example, the Shared AP is the Shared AP. You may decide to allocate resources to each STA associated with the AP.
- the AP100 (Sharing AP), for example, arranges the Per STA Info for each STA 200 in the Per AP Info field, and in a field different from the Per STA Info in the Per AP Info field, the MAP type common to the STA 200 is set to another AP100 (Sharing AP). You may notify Shared AP). In other words, the MAP type (information indicating the type of cooperative communication) for each of the plurality of Shared APs may be included in the Per AP Info (for example, individual information).
- the AP100 may determine (or change) the format of the MAP type dependent information (for example, MAPTypeDependentInfo) in PerSTAInfo based on the MAP type notified for each of a plurality of Shared APs, for example. ..
- FIG. 21 shows an example of the MAP Trigger frame format according to the present embodiment.
- information regarding the number of STA200s associated with each of a plurality of Shared APs may be included.
- the number of PerSTAInfo fields arranged in each PerAPInfo field may be determined based on the information regarding the number of the STA200.
- the number of STAs for each Shared AP may be specified as in the sixth embodiment, and the number of STAs common to a plurality of Shared APs (for example, the maximum number of STAs) is specified. Shared APs with less than the specified number of STAs may be filled with Padding. Further, in FIG. 21, as in the case of the sixth embodiment, the information regarding the number of STAs is shown in the case where it is included in CommonInfo, but it may be arranged in PerAPInfo.
- the MAP type is not limited to the case where it is set in the Per APInfo field.
- a plurality of MAP types are mixed depending on the information (TotalMAPType) regarding the entire MAP type in CommonInfo.
- Information to be specified to the Shared AP is notified, and in Per AP Info, the information (MAP Type Index) regarding the identification of the MAP type for each Shared AP is transferred from the entire MAP type (Total MAP Type) notified in Common Info to the Shared AP. You may be notified.
- the MAP type (MAP Type) notified by each Per AP Info field may be common among STA200s under Shared AP corresponding to the Per AP Info.
- individual individual information may be set in, for example, STA200 in PerSTAInfo in the PerAPInfo field.
- the individual information for each STA200 includes, for example, individual information that does not depend on the MAP type (in other words, information common to multiple MAP types) and individual information that depends on the MAP type (in other words, information that differs depending on the MAP type). May be included.
- the individual information that does not depend on the MAP type may include, for example, the STA200 ID (STAID), ResourceAllocation, and UL / DLFlag. Further, the individual information depending on the MAP type may be the same as that of the sixth embodiment, for example.
- the field length of PerSTAInfo may be a fixed length or a variable length as in the PerAPInfo field of the fifth embodiment.
- the size of PerSTAInfo may be common among MAP types or may differ for each MAP type.
- the processing complexity and the signaling amount when the field length of Per STA Info is fixed length and variable length are the same as those of Per AP Info of the fifth embodiment.
- the field corresponding to each Shared AP in the MAP Trigger frame can be identified in the Shared AP, for example, when the shared AP is notified in advance of the order of the Shared AP, the embodiment 6 Similarly, the ID of the Shared AP (for example, AP ID) in the Per AP Info field shown in FIG. 21 may be omitted.
- the AP100 transfers the MAP type common to the plurality of STA200s under each Shared AP to the other AP100 by the MAP Type field arranged in the Per AP Info field in the MAP Trigger frame. Notice. As a result, the amount of signaling related to MAP type notification can be reduced.
- the AP100 notifies other AP100s of MAP type dependency information (MAPTypeDependentInfo) according to the MAP type, for example.
- MAPTypeDependentInfo MAP type dependency information
- the format of the MAP type dependency information is changed based on the MAP type of Shared AP.
- the AP100 can notify other AP100s of control signals corresponding to each of the plurality of MAP types even if the MAP types are different among the plurality of Shared APs, so that the efficiency of signaling can be improved. Therefore, according to the present embodiment, the communication efficiency in cooperative communication can be improved.
- AP100 may notify another AP100 (SharedAP) of the MAP type for each STA200, for example, in the PerSTAInfo (for example, terminal individual information) field.
- PerSTAInfo for example, terminal individual information
- the AP100 may determine (or change) the format of the MAP type dependent information (for example, MAPTypeDependentInfo) in PerSTAInfo based on the MAP type notified for each of a plurality of STA200s, for example.
- MAPTypeDependentInfo for example, MAPTypeDependentInfo
- FIG. 22 is a diagram showing an example of the MAP Trigger frame format according to the present embodiment.
- the PerSTAInfo field may be arranged in the same hierarchy as the CommonInfo field.
- the PerAPInfo field may be arranged in place of the PerAPInfo field in the format shown in FIG.
- PerSTAInfo individual individual information may be set in STA200.
- the individual information for each STA200 includes, for example, individual information that does not depend on the MAP type (in other words, information common to multiple MAP types) and individual information that depends on the MAP type (in other words, information that differs depending on the MAP type). May be included.
- the individual information that does not depend on the MAP type may include, for example, the STA200 ID (STAID), MAPType, ResourceAllocation, and UL / DLFlag.
- the individual information (for example, MAP Type Dependent Info) that differs depending on the MAP type may include the following information as in the fifth embodiment, for example.
- -For C-SR Shared AP Tx Power, Sharing AP Acceptable Maximum Interference Level, Shared AP Maximum Tx Power, Shared AP Interference Level -For JT or D-MIMO: Transmission Parameter (for example, MCS, Sequence Number, ...)
- MCS Mobile Broadband Code Division Multiple Access
- FIG. 23 is a diagram showing an example of instruction of the MAP type when the MAP type is different for each STA200.
- the method of the sixth embodiment and the method of the eighth embodiment are compared.
- FIG. 23 shows, as an example, a case where the STA200 under the Shared AP of APID1 is STA1 and STA2, and the STA200 under the SharedAP of APID2 is STA2 and STA3.
- STA2 performs cooperative communication with the Shared APs of APID1 and APID2, respectively.
- the method of the sixth embodiment is a method of instructing the MAP type for each STA200 under the Shared AP by the Per STA Info of each Per AP Info. Therefore, in the method of the sixth embodiment, for example, the MAP type of the subordinate STA is instructed for each Shared AP.
- the MAP types of STA1 and STA2 under Shared AP of AP ID 1 are specified in Per AP Info corresponding to AP ID 1
- the MAP types of STA 2 and STA 3 under Shared AP of AP ID 2 are specified. Is instructed in PerAPInfo corresponding to APID2.
- the method of the eighth embodiment is a method of instructing the MAP type for each STA200 by Per STA Info. Therefore, in the eighth embodiment, for example, the MAP type for each STA200 is specified regardless of the Shared AP with which the STA200 is associated. In the example shown in FIG. 23, the MAP types of STA1, 2, and 3 are indicated in Per STA Info.
- the MAP type is specified in the two PerAPInfo fields corresponding to APID1 and APID2, respectively.
- the MAP type is specified in one PerSTAInfo field corresponding to STAID2. Therefore, according to the method of the eighth embodiment, the signaling regarding the MAP type can be reduced as compared with the method of the sixth embodiment.
- the field length of PerSTAInfo may be a fixed length or a variable length as in the PerAPInfo field of the fifth embodiment.
- the size of PerSTAInfo may be common among MAP types or may differ for each MAP type.
- the processing complexity and the signaling amount when the field length of Per STA Info is fixed length and variable length are the same as those of Per AP Info of the fifth embodiment.
- each SharedAP can specify the SharedAP with which the STA200 is associated (holding the connection relationship). Therefore, in the MAPTrigger frame, the SharedAPID (AP). ID) does not have to be notified to Shared AP.
- a unique STA ID can be assigned to each STA200 under a plurality of Shared APs.
- AID or AID12 is used to assign a unique STA ID
- the following methods can be mentioned.
- the Sharing AP may manage the AID and assign the AID to the STA200 directly or via the Shared AP.
- the AP100 notifies other AP100s of the MAP type for each of a plurality of STA200s in the MAPType field arranged in the PerSTAInfo field in the MAPTrigger frame. Further, the AP100 notifies another AP100 of, for example, MAP type dependency information (MAPTypeDependentInfo) according to the MAP type. In other words, in the MAP Trigger frame, the format of the MAP type dependent information is changed based on the MAP type for each of a plurality of STA200s.
- MAPTypeDependentInfo MAP type dependency information
- the AP100 can notify other AP100s of control signals corresponding to each of the plurality of MAP types even if the MAP types are different among the plurality of STA200s, so that the efficiency of signaling can be improved. Further, for example, duplication of STA information such as MAP type can be suppressed, and signaling can be reduced. Therefore, according to the present embodiment, the communication efficiency in cooperative communication can be improved.
- FIG. 24 is a diagram showing a comparative example of processing complexity and signaling amount for each of the MAP Trigger frame formats of Embodiments 6, 7 and 8.
- the sixth embodiment is a method in which PerSTAInfo is arranged in the PerAPInfo field and the MAP type is specified in PerSTAInfo.
- the seventh embodiment is a method in which the Per STA Info is arranged in the Per AP Info field, and the MAP type common to the STA 200 is instructed in an area different from the Per STA Info in the Per AP Info field.
- the eighth embodiment is a method in which the Per AP Info is not arranged and the MAP type is specified in the Per STA Info.
- the complexity of the process decreases in the order of, for example, embodiments 7, 6 and 8.
- the signaling amount decreases in the order of, for example, embodiments 8, 7, and 6.
- the seventh embodiment may be applied (or selected).
- the eighth embodiment may be applied (or selected).
- the format type applied in the MAP Trigger frame (for example, any of the frame formats of the fourth to the eighth embodiments) may be specified in the Common Info field.
- FIG. 25 is a diagram showing an example of the MAP Trigger frame format according to the present embodiment.
- FIG. 25 shows, as an example, an example in which the frame format according to the fourth embodiment is applied.
- the Common Info field may include, for example, information indicating the format type of the MAP Trigger frame (for example, MAP Format Type).
- the AP100 may determine, for example, the format after the MAPFormatType field in the MAPTrigger frame based on the format type shown in MAPFormatType.
- the format type specified by the MAP Format Type may be, for example, any of the following formats.
- -A format that indicates the MAP type of each Shared AP in the MAP type field of Common Info for example, embodiment 4
- a format that indicates the MAP type in the Per AP Info field eg, embodiment 5
- a format that indicates the MAP type in the Per STA Info field in Per AP Info eg, embodiment 6
- -A format in which Per STA Info is placed in Per AP Info and indicates a MAP type common to STA in a region different from Per STA Info in Per AP Info for example, embodiment 7
- -A format in which Per AP Info is not placed and the MAP type is specified in the Per STA Info field for example, embodiment 8).
- a format with a smaller total number of bits or a format that is easier to process may be selected. For example, if there are multiple formats that can notify the configuration of the MAP type to be set in the Shared AP (for example, the MAP type common to the Shared AP, the MAP type for each Shared AP, or the MAP type for each STA200), the total bit. A format with a smaller number (in other words, the amount of signaling) or a format that is easier to process (in other words, a format with less complexity of processing) may be selected.
- the selection criteria for the format type are not limited to these, and may be, for example, other criteria according to the setting status of the MAP type for each Shared AP and the STA200 under each Shared AP.
- the format of the fifth embodiment is selected.
- the format of the sixth embodiment may be selected.
- the AP100 selects (or switches) any one of a plurality of formats of the MAP Trigger frame based on, for example, a selection criterion, and information indicating the type of the selected format (for example, MAP). You may send a MAP Trigger frame containing Format (Type).
- the AP100 can select, for example, a format that is easier to process or a format that has a smaller amount of signaling, depending on the setting status of the MAP type of each Shared AP and the STA200 under each Shared AP. ..
- the method of switching the MAP Trigger frame format according to the fourth embodiment to the eighth embodiment has been described, but the candidates for the switching format are not limited to this, and for example, the implementation. At least a part of the formats of the first to the eighth embodiments may be used.
- MAP Trigger frame format is specified by MAP Format Type
- the present invention is not limited to this, and for example, the MAP Trigger frame format (format) is based on other parameters. Type) may be implicitly notified to the Shared AP.
- the same method in other words, setting the frame format
- the same method may be applied to both DL and UL.
- notification information regarding MAP in the MAP Trigger frame has been described, but the information to be notified is not limited to the information shown in the above-described embodiment, and for example, other information may be used. It may be added or at least some of the defined information may be removed.
- a definition example of the Frame Control field for example, FIG. 8
- a definition example of the MAP type for example, FIGS. 9 and 10
- a definition example of the Trigger Type subfield for example, FIGS. 12 and 10
- 14 and a definition example of TotalMAPType and MAPTypeIndex (for example, FIG. 20) are shown, but the definition example is not limited to these definition examples and may be defined by other values.
- MAP type the type of MAP has been described by the term "MAP type", but the term is not limited to this, and other terms may be used.
- Multi-AP coordination schemes used in the specification under development of 11be may be used.
- the AP instructing cooperative communication and the AP instructing cooperative communication are described by the terms “Sharing AP” and “Shared AP”, respectively, but the term is not limited to this, and other terms may be used. good.
- the description is based on the 11be format as an example, but the format to which one embodiment of the present disclosure is applied is not limited to the 11be format.
- One embodiment of the present disclosure can also be applied to, for example, IEEE 802.11bd (NGV (Next Generation V2X)), which is a next-generation standard of IEEE 802.11p, which is an in-vehicle standard.
- NVG Next Generation V2X
- Each functional block used in the description of the above embodiment is partially or wholly realized as an LSI which is an integrated circuit, and each process described in the above embodiment is partially or wholly. It may be controlled by one LSI or a combination of LSIs.
- the LSI may be composed of individual chips, or may be composed of one chip so as to include a part or all of functional blocks.
- the LSI may include data input and output.
- LSIs may be referred to as ICs, system LSIs, super LSIs, and ultra LSIs depending on the degree of integration.
- the method of making an integrated circuit is not limited to LSI, and may be realized by a dedicated circuit, a general-purpose processor, or a dedicated processor. Further, an FPGA (Field Programmable Gate Array) that can be programmed after the LSI is manufactured, or a reconfigurable processor that can reconfigure the connection and settings of the circuit cells inside the LSI may be used.
- FPGA Field Programmable Gate Array
- the present disclosure may be realized as digital processing or analog processing.
- the communication device may include a wireless transceiver and a processing / control circuit.
- the wireless transceiver may include a receiver and a transmitter, or them as a function.
- the radio transceiver (transmitter, receiver) may include an RF (Radio Frequency) module and one or more antennas.
- the RF module may include an amplifier, an RF modulator / demodulator, or the like.
- Non-limiting examples of communication devices include telephones (mobile phones, smartphones, etc.), tablets, personal computers (PCs) (laptops, desktops, notebooks, etc.), cameras (digital stills / video cameras, etc.).
- Digital players digital audio / video players, etc.
- wearable devices wearable cameras, smart watches, tracking devices, etc.
- game consoles digital book readers
- telehealth telemedicines remote health Care / medicine prescription
- vehicles with communication functions or mobile transportation automobiles, planes, ships, etc.
- combinations of the above-mentioned various devices can be mentioned.
- Communication devices are not limited to those that are portable or mobile, but are all types of devices, devices, systems that are not portable or fixed, such as smart home devices (home appliances, lighting equipment, smart meters or Includes measuring instruments, control panels, etc.), vending machines, and any other "Things” that can exist on the IoT (Internet of Things) network.
- smart home devices home appliances, lighting equipment, smart meters or Includes measuring instruments, control panels, etc.
- vending machines and any other “Things” that can exist on the IoT (Internet of Things) network.
- Communication includes data communication by a combination of these, in addition to data communication by a cellular system, a wireless LAN system, a communication satellite system, etc.
- the communication device also includes devices such as controllers and sensors that are connected or connected to communication devices that perform the communication functions described in the present disclosure.
- devices such as controllers and sensors that are connected or connected to communication devices that perform the communication functions described in the present disclosure.
- controllers and sensors that generate control and data signals used by communication devices that perform the communication functions of the communication device.
- Communication devices also include infrastructure equipment that communicates with or controls these non-limiting devices, such as base stations, access points, and any other device, device, or system. ..
- the base station includes a control circuit that determines a control signal format based on the type of cooperative communication, a transmission circuit that transmits the control signal to another base station by the format, and a transmission circuit. Equipped with.
- control signal includes common information including information common to a plurality of base stations and individual information individually to the plurality of base stations, and the control circuit is classified into the above type. Based on this, at least one of the formats of the common information and the individual information is determined.
- the information indicating the type is included in the field for notifying the type in the common information.
- the information indicating the type is included in the field for notifying the trigger type in the common information.
- the information that triggers the cooperative communication is included in the field for notifying the trigger type, and the information indicating the type is included in the field that depends on the trigger type. Is done.
- the information indicating the type for each of the plurality of base stations is included in the common information.
- the information indicating the type for each of the plurality of base stations is included in the individual information.
- the size of the individual information is common among the types or different for each type.
- the individual information includes individual terminal individual information for a terminal connected to a base station corresponding to the individual information, and information indicating the type is included in the terminal individual information. ..
- control circuit allocates resources for the terminal connected to the other base station.
- control signal includes common information including information common to a plurality of base stations and individual terminal information for a plurality of terminals, and the type of each of the plurality of terminals is specified.
- the indicated information is included in the terminal individual information, and the control circuit determines the format of the terminal individual information based on the type.
- the size of the terminal individual information is common among the types or different for each type.
- control circuit selects any one of the plurality of formats based on a selection criterion, and the transmission circuit includes information indicating the type of the selected format.
- the control signal is transmitted.
- the base station determines the format of the control signal based on the type of cooperative communication, and transmits the control signal to another base station by the format.
- One embodiment of the present disclosure is useful for wireless communication systems.
- Control unit 102 Control signal generation unit for STA 103
- Control signal generation unit for AP 104 Control signal generation unit for AP 104
- Transmission signal generation unit 105 Transmission signal generation unit 105
- Wireless transmission / reception unit 106 Receive signal demodulation / decoding unit 200
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Abstract
Description
・Coordinated Spatial Reuse(以下「C-SR」と呼ぶ)
・Coordinated Orthogonal Frequency Division Multiple Access(以下、「C-OFDMA」と呼ぶ)
・Joint Transmissions(以下、「JT」と呼ぶ)
・Coordinated Beamforming(以下、「CBF」と呼ぶ)
本実施の形態に係る無線通信システムは、複数のAP100、及び、STA200を含んでよい。AP100は、例えば、Sharing AP及びShared APの双方の機能を備えてもよく、何れか一方の機能を備えてもよい。
・BW(帯域幅:bandwidth)、
・MAPタイプ(協調通信の種別を示す情報)、
・Shared AP ID(Shared APの識別情報)、
・uplink(UL)/downlink(DL) Flag(UL及びDLの何れかを示す情報)、
・Resource Allocation(リソース割当情報)
[AP100の構成例]
図5は、AP100の構成例を示すブロック図である。図5に示すAP100は、例えば、制御部101と、STA向け制御信号生成部102と、AP向け制御信号生成部103と、送信信号生成部104と、無線送受信部105と、受信信号復調・復号部106と、を含んでよい。
図6は、本実施の形態に係るSTA200の構成例を示すブロック図である。図6に示すSTA200は、例えば、無線送受信部201と、受信信号復調・復号部202と、送信信号生成部203と、を含んでよい。
次に、本実施の形態に係るMAP Triggerフレームフォーマットの設定例について説明する。
・C-SRの場合:Shared AP Maximum Tx Power、Shared AP Interference Level
・JT又はD-MIMOの場合:Transmission Parameter (例えば、MCS, Sequence Number,…)
・CBFの場合:STA ID to Suppress、STA Resource Allocation Info to Suppress
・C-OFDMAの場合:情報無し
本実施の形態に係るAP及びSTAの構成は、実施の形態1と同様でよい。
本実施の形態に係るAP及びSTAの構成は、実施の形態1と同様でよい。
例えば、実施の形態1、2及び3それぞれのMAP Triggerフレームフォーマットに関する処理の複雑さは同等である。
・実施の形態1:Frame Control及びCommon Info内のMAPタイプ(MAP Type)
・実施の形態2:Common Info内のTrigger Type
・実施の形態3:Common Info内のTrigger Type及びTriggerタイプ依存共通情報(Trigger Type Dependent Common Info)内のMAPタイプ(MAP Type)
本実施の形態に係るAP及びSTAの構成は、実施の形態1と同様でよい。
本実施の形態に係るAP及びSTAの構成は、実施の形態1と同様でよい。
・C-SRの場合:Shared AP Tx Power、Sharing AP Acceptable MaximumInterference Level、Shared AP Maximum Tx Power、Shared AP Interference Level
・JT又はD-MIMOの場合:Transmission Parameter (例えば、MCS, Sequence Number,…)
・CBFの場合:STA ID to Suppress、STA Resource Allocation Info to Suppress
・C-OFDMAの場合:情報無し
図17は、実施の形態4及び実施の形態5それぞれのMAP Triggerフレームフォーマットに関する処理の複雑さ、及び、シグナリング量の比較例を示す図である。なお、図17では、実施の形態4についてPer AP Infoフィールド長が可変長の場合について示し、実施の形態5についてPer AP Infoフィールド長が固定長及び可変長それぞれの場合について示す。
本実施の形態に係るAP及びSTAの構成は、実施の形態1と同様でよい。
MAP Type Index variant = MAP Type Element (MAP Type Index value + 1)
・C-SRの場合:Shared AP Tx Power、Sharing AP Acceptable MaximumInterference Level、Shared AP Maximum Tx Power、Shared AP Interference Level
・JT又はD-MIMOの場合:Transmission Parameter (例えば、MCS, Sequence Number,…)
・CBFの場合:STA ID to Suppress、STA Resource Allocation Info to Suppress
・C-OFDMAの場合:情報無し
本実施の形態に係るAP及びSTAの構成は、実施の形態1と同様でよい。
本実施の形態に係るAP及びSTAの構成は、実施の形態1と同様でよい。
・C-SRの場合:Shared AP Tx Power、Sharing AP Acceptable MaximumInterference Level、Shared AP Maximum Tx Power、Shared AP Interference Level
・JT又はD-MIMOの場合:Transmission Parameter (例えば、MCS, Sequence Number,…)
・CBFの場合:STA ID to Suppress、STA Resource Allocation Info to Suppress
・C-OFDMAの場合:情報無し
・ID空間(例えば、指定範囲)をシステム全体においてシェアしてユニークなAIDを付与するように一元管理する方法。この方法では、例えば、Sharing APがAIDを管理して、STA200に対して直接又はShared AP経由でAIDを付与してよい。
・AID空間の排他的な領域を各Shared APにおいて使用するようにネゴシエートする方法。
図24は、実施の形態6、7及び8それぞれのMAP Triggerフレームフォーマットに関する処理の複雑さ、及び、シグナリング量の比較例を示す図である。
本実施の形態に係るAP及びSTAの構成は、実施の形態1と同様でよい。
・Common InfoのMAPタイプフィールドにおいて各Shared APのMAPタイプを指示するフォーマット(例えば、実施の形態4)。
・Per AP InfoフィールドにおいてMAPタイプを指示するフォーマット(例えば、実施の形態5)。
・Per AP Info内のPer STA InfoフィールドにおいてMAPタイプを指示するフォーマット(例えば、実施の形態6)
・Per AP Info内にPer STA Infoが配置され、Per AP Info内のPer STA Infoと異なる領域においてSTA共通のMAPタイプを指示するフォーマット(例えば、実施の形態7)。
・Per AP Infoが配置されず、Per STA InfoフィールドにおいてMAPタイプを指示するフォーマット(例えば、実施の形態8)
上述した実施の形態において、DL及びULの両方に同じ方法(換言すると、フレームフォーマットの設定)が適用されてもよい。
101 制御部
102 STA向け制御信号生成部
103 AP向け制御信号生成部
104,203 送信信号生成部
105,201 無線送受信部
106,202 受信信号復調・復号部
200 STA
Claims (16)
- 協調通信の種別に基づいて、制御信号のフォーマットを決定する制御回路と、
前記フォーマットによって、前記制御信号を他の基地局へ送信する送信回路と、
を具備する基地局。 - 前記制御信号は、複数の基地局に共通の情報を含む共通情報と、前記複数の基地局に個別の個別情報と、を含み、
前記制御回路は、前記種別に基づいて、前記共通情報及び前記個別情報の少なくとも一つの前記フォーマットを決定する、
請求項1に記載の基地局。 - 前記種別を示す情報は、前記共通情報における、前記種別を通知するためのフィールドに含まれる、
請求項2に記載の基地局。 - 前記種別を示す情報は、前記共通情報における、トリガータイプを通知するためのフィールドに含まれる、
請求項2に記載の基地局。 - 前記共通情報において、前記協調通信をトリガする情報は、トリガータイプを通知するためのフィールドに含まれ、前記種別を示す情報は、前記トリガータイプに依存するフィールドに含まれる、
請求項2に記載の基地局。 - 前記複数の基地局毎の前記種別を示す情報は、前記共通情報に含まれる、
請求項2に記載の基地局。 - 前記複数の基地局毎の前記種別を示す情報は、前記個別情報に含まれる、
請求項2に記載の基地局。 - 前記個別情報のサイズは、前記種別間で共通、又は、前記種別毎に異なる、
請求項7に記載の基地局。 - 前記個別情報には、当該個別情報に対応する基地局に接続する端末に個別の端末個別情報が含まれ、
前記種別を示す情報は、前記端末個別情報に含まれる、
請求項2に記載の基地局。 - 前記制御回路は、前記他の基地局に接続する前記端末のリソース割り当てを行う、
請求項9に記載の基地局。 - 前記制御信号は、複数の基地局に共通の情報を含む共通情報と、複数の端末に個別の端末個別情報と、を含み、
前記複数の端末毎の前記種別を示す情報は、前記端末個別情報に含まれ、
前記制御回路は、前記種別に基づいて、前記端末個別情報の前記フォーマットを決定する、
請求項1に記載の基地局。 - 前記端末個別情報のサイズは、前記種別間で共通、又は、前記種別毎に異なる、
請求項11に記載の基地局。 - 前記制御回路は、選択基準に基づいて、複数の前記フォーマットのうち何れか一つを選択し、
前記送信回路は、選択された前記フォーマットの種別を示す情報を含む前記制御信号を送信する、
請求項1に記載の基地局。 - 協調通信の種別に関する情報を第1の基地局に送信する送信部と、
前記協調通信の種別に関する情報に基づいて、決定されたフォーマットにより、第2の基地局と協調通信を行う回路と、を具備する、
通信装置。 - 基地局は、
協調通信の種別に基づいて、制御信号のフォーマットを決定し、
前記フォーマットによって、前記制御信号を他の基地局へ送信する、
通信方法。 - 通信装置は、
協調通信の種別に関する情報を第1の基地局に送信し、
前記協調通信の種別に関する情報に基づいて、決定されたフォーマットにより、第2の基地局と協調通信を行う、
通信方法。
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