WO2018155160A1 - 通信装置および通信方法 - Google Patents
通信装置および通信方法 Download PDFInfo
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- WO2018155160A1 WO2018155160A1 PCT/JP2018/003944 JP2018003944W WO2018155160A1 WO 2018155160 A1 WO2018155160 A1 WO 2018155160A1 JP 2018003944 W JP2018003944 W JP 2018003944W WO 2018155160 A1 WO2018155160 A1 WO 2018155160A1
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- terminal
- trigger
- user info
- subfield
- information field
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/18—Information format or content conversion, e.g. adaptation by the network of the transmitted or received information for the purpose of wireless delivery to users or terminals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/002—Transmission of channel access control information
- H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
- H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- 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
- H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/002—Transmission of channel access control information
- H04W74/004—Transmission of channel access control information in the uplink, i.e. towards network
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/02—Hybrid access
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0833—Random access procedures, e.g. with 4-step access
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0833—Random access procedures, e.g. with 4-step access
- H04W74/0841—Random access procedures, e.g. with 4-step access with collision treatment
- H04W74/085—Random access procedures, e.g. with 4-step access with collision treatment collision avoidance
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/12—WLAN [Wireless Local Area Networks]
Definitions
- the present disclosure relates to a communication device and a communication method.
- IEEE 802.11ax (hereinafter referred to as “11ax”) technical specifications are being developed as the next standard of 802.11ac in IEEE (the Institute of Electrical and Electronics Engineers) 802.11 Task Group Group ax.
- 11ax the introduction of OFDMA (Orthogonal) Frequency-Division Multiple Access) -based random access (RA) was stipulated.
- OFDMA Orthogonal Frequency-Division Multiple Access
- An access point (AP: Access Point; also called “base station”) transmits a control signal (hereinafter referred to as “Trigger frame”) instructing transmission of an uplink OFDMA signal to a plurality of terminals ( (Sometimes called “STA (Station)").
- Trigger frame a control signal instructing transmission of an uplink OFDMA signal to a plurality of terminals ( (Sometimes called “STA (Station)").
- a Common Info field that includes information common to a plurality of terminals multiplexed by OFDMA and a User Info field that includes information unique to each terminal multiplexed by OFDMA are defined (for example, Non-Patent Document 1, (Refer nonpatent literature 4).
- the Trigger Type that is the type of the Trigger frame (the signal type that the AP transmits to the terminal) is indicated (for example, see Non-Patent Document 2 and Non-Patent Document 3).
- the AID12 subfield included in the User Info field notifies the Association ID (AID), which is a unique ID assigned to the terminal at the time of association.
- AID Association ID
- a method of assigning a frequency resource (RU: Resource Unit) to a specific terminal by notifying the AID assigned to the terminal is referred to as “Scheduled access”.
- AID a frequency resource indicated by RU Allocation ⁇ subfield of User Info field
- RA RU RA RU. It is agreed to give instructions (see, for example, Non-Patent Document 1).
- Modem User Info a new User Info field dedicated to RA in the Trigger frame
- Non-patent Document 5 a new User Info field dedicated to RA in the Trigger frame
- Modified User Info one or more consecutive RA RUs are instructed to the terminal in one User Info field.
- IEEE 802.11-15 / 0132r17 “Specification Framework for TGax” IEEE 802.11-16 / 0024r1 “Proposed TGax draft specification” IEEE 802.11-16 / 0806r0 “HE Variant HT Control Control Buffer Status Report IEEE 802.16-16 / 0617r1 “Remaining Topics in Power Control” IEEE 802.11-16 / 1516r1 “CIDs for: Section 9.1.33 Random Access CIDs” IEEE802.11-16 / 0725r3 “CIDs for: Trigger Frame Format Format Comment Resolution-Type Type Dependent Per User user information section 9.1.23 IEEE 802.11-16 / 0938r1 “Resolution for CID 1589, 1590, 2668, and 2669 on Multi-TID Aggregation in Sub-clause 25.10.4”
- One aspect of the present disclosure provides a communication device and a communication method that can appropriately set modified User Info in a Trigger frame.
- a communication apparatus generates a trigger signal instructing transmission of an uplink signal, and the trigger signal includes a terminal information field including a terminal ID subfield and a resource unit allocation information subfield, If the trigger signal has a first terminal information field that indicates one or more consecutive random access resource units, the terminal ID subfield in the first terminal information field includes a terminal ID as A trigger signal generation unit that sets an unused ID that is not used; and a transmission unit that transmits the generated trigger signal.
- FIG. 3 is a block diagram showing a partial configuration example of an AP according to the first embodiment.
- FIG. 2 is a block diagram showing a configuration example of an AP according to the first embodiment.
- a block diagram showing a configuration of a terminal according to the first embodiment The figure which shows an example (specific example 1-1) of RA RU designated by deformation
- FIG. 9 is a block diagram showing a configuration example of a terminal according to the second embodiment.
- FIG. 1 is a diagram illustrating an example of a format of a Trigger frame that is being studied by 11ax.
- a Common Info field that includes information common to a plurality of terminals multiplexed by OFDMA and a User Info field that includes unique information for each terminal multiplexed by OFDMA are defined (for example, see Non-Patent Document 1). .
- FIG. 2 is a diagram showing an example of the format of the Common Info field of the Trigger frame (see, for example, Non-Patent Document 1).
- Trigger Type subfield Trigger Type is specified. 3 is defined as Trigger Type (see, for example, Non-Patent Document 2). Further, in addition to the definition of FIG. 3, addition of Trigger Type (hereinafter referred to as Buffer Status Report Poll (BSRP)) that instructs reporting of transmission buffer information of the terminal is being studied (for example, non-patent literature) 3). Further, Trigger Dependent Common Info subfield can include terminal common information suitable for (dependent on) Trigger type.
- BSRP Buffer Status Report Poll
- FIG. 4 is a diagram showing an example of the format of the User Info field of the Trigger frame (see, for example, Non-Patent Document 1 and Non-Patent Document 4).
- FIG. 4 shows a format in which the size of Target RSSI subfield, which is undecided in Non-Patent Document 1, is reflected in 7 bits according to the proposal of Non-Patent Document 4.
- Trigger Dependent User Info subfield can include terminal-specific information suitable for (dependent on) Trigger type.
- the User Info field that indicates the radio resource of the terminal in units of 1RU is called "Normal User Info" to distinguish it from the modified User Info.
- the normal User Info and the modified User Info may be collectively referred to as “User Info”.
- Basic Trigger that does not limit the format of the upstream signal is defined as Trigger Type (see, for example, FIG. 3).
- Trigger Type In Basic Trigger, a response by Scheduled access and a response by random access are possible.
- the Trigger Type is Basic Trigger
- the Trigger Dependent User User Info subfield of the User Info field includes information (constraint information) indicating restrictions on uplink signal transmission shown in FIG. (See Patent Document 7).
- Type dependent Per User Info subfield includes 2-bit “MPDU MU Spacing Factor” indicating a parameter indicating the minimum interval of MPDU (MAC protocol data unit) that can be processed by the AP, 3-bit “TID Aggregation Limit” indicating the parameter indicating the maximum number of TIDs to be included in the MPDU, and 1-bit “AC Preference Level” indicating whether the AP recommends an Access Category (AC, type of transmission data) or not.
- 2-bit “Preferred ⁇ AC ” indicates a parameter indicating AC recommended by the AP.
- FIG. 6A is a diagram illustrating an example of the format of the modified User Info.
- any one RU is specified in one User Info field. That is, in the Trigger frame using the normal User Info, a plurality of User Info fields are used when instructing a plurality of RA RUs.
- the modified User Info restricts the arrangement of the indicated RU to one continuous band.
- a plurality of RUs can be specified using one modified User Info field.
- the RU Allocation subfield of the modified User ⁇ Info shown in FIG. 6A the position of the start RU of the RU for RA, which is a continuous band, and the RU size are indicated (see FIG. 6B).
- the modified User ⁇ Info by limiting the number of spatially multiplexed streams at the time of RA RU transmission to a fixed value '1' (that is, no MIMO application), SS Allocation subfield shown in FIG.
- the RU size for each RA RU is the RU size notified in RU Allocation subfield.
- the information set in Coding Type, MCS, DCM, Target RSSI subfield of the modified User Info shown in FIG. 6A is common to a plurality of RA RUs indicated by RU Allocation and SS Allocation.
- Trigger Dependent User Info subfield is deleted as shown in FIG. 6A.
- Trigger Dependent Common Info subfield is deleted. This reduces the Trigger frame size.
- the modified User Info is made common to a plurality of RUs (between a plurality of terminals) by sharing a part of parameters normally designated by the User Info, and one or more consecutive RAs in one User info field. You can specify the RU for Trigger frame size.
- Trigger frame size can be reduced by applying modified User Info when Trigger Type is RA trigger.
- Trigger frame size can be reduced by deleting Trigger Dependent Common Common Info subfield and Trigger Dependent User Info subfield in Trigger frame.
- RA Trigger is limited to instructions by the modified User Info, only one continuous RU group can be specified with the same parameters. For this reason, if there are some RUs that are expected to degrade in performance (for example, RUs near DC or where interference is observed) within the system band, error resilience against all RUs indicated by the modified User Info However, it is necessary to set a strong and robust parameter (for example, MCS), resulting in a decrease in throughput.
- MCS strong and robust parameter
- the radio communication system includes an AP (radio transmission apparatus) 100 and a terminal (radio reception apparatus) 200.
- the AP 100 transmits a Trigger frame that instructs RA transmission to the terminal 200, the terminal 200 receives the Trigger frame, and transmits the RA to the AP 100 using the resource indicated by the Trigger frame.
- FIG. 7 is a block diagram showing a partial configuration of the AP 100 according to the present embodiment.
- the Trigger frame generating unit 104 generates a Trigger frame (trigger signal) that instructs transmission of an uplink signal.
- the wireless transmission / reception unit 106 transmits Trigger frame.
- the Trigger frame has a modified User Info field (first terminal information field) indicating one or more consecutive RA RUs
- the Trigger frame generation unit 104 AID12 subfield in the modified User Info field An unused AID that is not used as an AID (terminal ID) is set in the (terminal ID subfield).
- FIG. 8 is a block diagram showing a configuration of AP 100 according to the present embodiment.
- the AP 100 generates a Trigger frame (trigger signal) that instructs the terminal 200 to transmit an uplink signal (for example, an RA signal), and transmits the Trigger frame to the terminal 200.
- Trigger frame trigger signal
- an uplink signal for example, an RA signal
- an AP 100 includes an RA resource control unit 101, a User Info control unit 102, an AID control unit 103, a Trigger ⁇ frame generation unit 104, a transmission signal modulation unit 105, a radio transmission / reception unit 106, an antenna 107, and the like.
- the wireless transmission / reception unit 106 includes a transmission unit and a reception unit.
- the RA resource control unit 101, User101Info control unit 102, AID control unit 103, Trigger frame generation unit 104, and quality estimation unit 109 constitute an access control (MAC: Media109Access Control) unit.
- MAC Media109Access Control
- the RA resource control unit 101 determines a band to allocate the RA RU within the system band based on the reception quality for each RU of a predetermined size output from the quality estimation unit 109.
- the RA resource control unit 101 outputs RA resource information indicating a band to which the RA RU is allocated to the User / Info control unit 102 and the Trigger / frame generation unit 104.
- the RA resource information includes, for example, the RA RU allocated within the system band, and control information for generating the RA signal (Coding Type included in User Info Field, MCS, DCM, SS Allocation, Target RSSI (Target RSSI)) etc. are included.
- the RA resource control unit 101 has a bad reception quality such as a RU that overlaps with a band used by another service in the system band, a RU corresponding to the DC frequency of the baseband during demodulation, or a RU with relatively strong interference.
- MCS for example, BPSK
- a relatively high target RSSI level for example, -60 dBm
- the RA resource control unit 101 performs MCS (for example, 16QAM) with higher transmission efficiency or target RSSI with less interference to other terminals for RUs that are expected to have relatively weak interference other than the above.
- MCS for example, 16QAM
- a level for example, -70 dBm may be set.
- the User Info control unit 102 controls the User Info field that configures the Trigger frame based on the RA resource information output from the RA resource control unit 101, and outputs the control result to the Trigger frame generation unit 104.
- the User Info control unit 102 determines the User Info field format (modified User Info or normal User Info) to be applied and the RA RU indicated by the User Info field to be applied. For example, when applying the modified User Info, the User Info control unit 102 indicates a plurality of RA RUs in the RU Allocation and SS Allocation of the User Info field, and sets common parameters for the plurality of RA RUs. Decide to direct. On the other hand, when applying the normal User Info, the User Info control unit 102 determines that one RA RU is indicated in the User Info field and individual parameters related to the RA RU are indicated.
- modified User Info the User Info control unit 102 indicates a plurality of RA RUs in the RU Allocation and SS Allocation of the User Info field, and sets common parameters for the plurality of RA RUs. Decide to direct.
- the User Info control unit 102 determines that one RA RU is indicated in the User Info field and individual parameters related to the RA RU are indicated.
- the AID control unit 103 determines an AID (AID12 subfield information of the Trigger frame) for instructing the format of User Info field (modified User Info or normal User Info).
- the AID control unit 103 outputs AID information indicating the determined AID to the Trigger / frame generation unit 104.
- AID 0, 2008 to 4094 in the 11ax specification
- the Trigger frame generation unit (trigger signal generation unit) 104 displays a Trigger frame (for example, FIGS. 1, 2, 4, and 6A) that instructs the terminal 200 to perform RA transmission (for example, OFDMA-based RA transmission). Reference). Specifically, the Trigger frame generation unit 104 sets each parameter indicated in the RA resource information output from the RA resource control unit 101 based on the information output from the User information control unit 102 in each of the User information field. Set to subfield.
- the Trigger ⁇ frame generation unit 104 is an RA that is a continuous band in the RU Allocation subfield based on the RA resource information (allocation RA RU) output from the RA resource control unit 101. Set the start RU position and RU size for the RU, and set the number of consecutive RUs for the RA RU in SS allocation subfield.
- the Trigger frame generation unit 104 when normal User Info is applied, on the basis of the RA resource information (allocation RA RU) output from the RA resource control unit 101, one RU for RU Allocation subfield Set the start position and RU size.
- the Trigger frame generating unit 104 sets the AID corresponding to the format of the User Info field to the AID 12 subfield of the Trigger frame based on the information output from the AID control unit 103 and the information output from the User Info control unit 102 To do.
- Trigger frame generating section 104 outputs the generated Trigger frame (trigger signal) to transmission signal modulating section 105.
- the transmission signal modulation unit 105 performs an encoding / modulation process on the Trigger frame output from the Trigger frame generation unit 104. Then, transmission signal modulation section 105 adds control signals (also called preambles) such as pilot signals and channel estimation signals used for frequency synchronization and timing synchronization on the receiving side (terminal 200) to the modulated signals. Then, a radio frame (transmission signal) is generated and output to the radio transceiver unit 106.
- control signals also called preambles
- the radio transmission / reception unit 106 performs predetermined radio transmission processing such as D / A conversion and up-conversion to a carrier frequency on the radio frame (transmission signal) output from the transmission signal modulation unit 105, and after the radio transmission processing The signal is transmitted to terminal 200 via antenna 107.
- the radio transmission / reception unit 106 receives a signal transmitted from the terminal 200 via the antenna 107, performs predetermined radio reception processing such as down-conversion to baseband and A / D conversion on the received signal,
- the signal after wireless reception processing is output to reception signal demodulation section 108.
- the received signal demodulation unit 108 extracts a radio frame by performing autocorrelation processing or the like on the signal output from the radio transmission / reception unit 106 and outputs the radio frame to the quality estimation unit 109.
- the quality estimation unit 109 estimates the reception quality for each RU of a predetermined size using the pilot signal included in the radio frame output from the reception signal demodulation unit 108, and outputs the estimation result to the RA resource control unit 101.
- FIG. 9 is a block diagram showing a configuration of terminal 200 according to the present embodiment.
- the terminal 200 receives a Trigger frame instructing RA transmission from the AP 100, selects one RU at random from the RA RUs instructed by the Trigger frame, and transmits an RA signal to the AP 100.
- terminal 200 includes an antenna 201, a radio transmission / reception unit 202, a received signal demodulation unit 203, a trigger frame decoding unit 204, an AID control unit 205, an RA resource determination unit 206, and an RA generation unit 207.
- Radio transceiver 202 includes a transmitter and a receiver.
- the AID control unit 205, the RA resource determination unit 206, and the RA generation unit 207 constitute an access control unit (MAC).
- MAC access control unit
- the wireless transmission / reception unit 202 receives the Trigger frame transmitted from the AP 100 and instructing the RA transmission via the antenna 201, and performs predetermined wireless reception such as down-conversion to baseband and A / D conversion to the received signal. Processing is performed, and the signal after the radio reception processing is output to reception signal demodulation section 203.
- the radio transmission / reception unit 202 performs predetermined radio transmission processing such as D / A conversion and up-conversion to a carrier frequency on a signal output from a transmission signal modulation unit 208 (to be described later), and a signal after the radio transmission processing Is transmitted to the AP 100 via the antenna 201.
- the received signal demodulation unit 203 extracts a radio frame (Trigger frame) by performing autocorrelation processing or the like on the signal output from the radio transmission / reception unit 202, and outputs the radio frame (Trigger frame) to the Trigger frame decoding unit 204.
- a radio frame Trigger frame
- the Trigger frame decoding unit 204 identifies the format of the User Info field included in the Trigger frame output from the received signal demodulation unit 203, decodes the Trigger frame, and outputs the decoded Trigger frame to the RA resource determination unit 206. .
- the AID control unit 205 operates in the same manner as the AID control unit 103 of the AP 100. Specifically, the AID control unit 205 determines an AID (AID12 subfield information of the Trigger) frame) for instructing the format of User Info field (modified User Info or normal User Info). The AID control unit 205 outputs AID information indicating the determined AID to the RA resource determination unit 206. The details of the definition of AID that indicates the format of User Info field will be described later.
- the RA resource determination unit 206 generates control RU and RA signal based on the AID information output from the AID control unit 205 and the Trigger frame information output from the Trigger frame decoding unit 204. To decide.
- the RA resource determination unit 206 outputs control information for generating the determined RA RU and RA signal to the RA generation unit 207.
- the RA resource determination unit 206 based on the AID information, formats the User Info ⁇ ⁇ field corresponding to the AID included in the AID 12 subfield of the Trigger frame output from the Trigger frame decoding unit 204 (modified User Info or normal Specify User (Info).
- the RA resource determining unit 206 identifies the RU start position and RU size from RU Allocation subfield, and determines the number of RA RUs from SS Allocation subfield (continuous RUs). Number) and apply other parameters reported in each subfield of the modified User ⁇ ⁇ Info field to multiple RA RUs in common, and randomly select one of the multiple RA RUs. Determine the RU for RA.
- the RA resource determination unit 206 specifies the start position and RU size of one RA RU from RU Allocation subfield, and each subfield (SS allocation of normal User Info field) Other parameters notified in (including subfield) are individually applied to one RA RU.
- the RA generation unit 207 includes the terminal ID and the transmission information (data or control information) of the terminal 200 based on the control information for generating the RA RU and the RA signal output from the RA resource determination unit 206. A signal is generated and output to transmission signal modulation section 208.
- the transmission signal modulation unit 208 performs encoding / modulation on the RA signal. Then, the transmission signal modulation unit 208 adds a control signal (preamble) such as a pilot signal and a channel estimation signal used for frequency synchronization and timing synchronization in the AP 100 to the modulated signal, and transmits a radio frame (transmission signal). ) And output to the wireless transmission / reception unit 202.
- the RA signal is frequency mapped to the RA RU indicated in the information determined by the RA resource determination unit 206.
- the AP 100 (Trigger frame generating unit 104) sets the unused AID in the AID12 subfield (terminal ID subfield) of the modified User Info that indicates one or more consecutive RA RUs in the Trigger frame.
- the terminal 200 is instructed that the User Info field including the use AID is the modified User Info.
- an unused AID is an AID that is not used as a terminal-specific AID for Scheduled access (that is, an AID assigned to the scheduled terminal 200) (0 and 2008 to 4094 in the current 11ax specification). Any).
- the instruction of the RU for RA by the normal User Info is excluded. That is, in the first specific example, all RA RUs are instructed by the modified User Info.
- the trigger frame generating unit 104 can set parameters for each modified user information by setting a plurality of modified user information. That is, in the first specific example, by using a low-size Trigger frame including the modified User Info, an operation close to the RA RU allocation (that is, the individual RU setting) by the normal User Info is possible.
- the Trigger frame generation unit 104 of the AP 100 sets one modified User Info with one Trigger frame.
- the terminal 200 is instructed that the field is modified User Info.
- the Trigger frame generating unit 104 sets the start RU positions and RU sizes of a plurality of RA RUs in RU Allocation subfield shown in FIG. 10, and sets the RU RU for RA instead of the number of spatially multiplexed streams in SS allocation subfield.
- Set the number of consecutive For example, if the value that can be taken in SS allocation subfield is 0 to 63 (6 bits), the number of consecutive RA RUs that can be notified in SS allocation subfield is 1 to 64, respectively.
- Example 1-1 since all RA RUs are instructed by one modified User Info, the Trigger frame size can be reduced.
- the Trigger frame generation unit 104 of the AP 100 sets a plurality of modified User Info in one Trigger frame.
- the AP 100 instructs seven consecutive RA RUs with the first modified User Info, and instructs MCS # 1 (for example, 16QAM) for those RUs. In addition, the AP 100 instructs one RA RU with the second modified User Info, and instructs MCS # 2 (for example, QPSK) to the RU.
- MCS # 1 for example, 16QAM
- MCS # 2 for example, QPSK
- a parameter (MCS) different from the other RUs is set for the central RU among seven consecutive RA RUs. That is, in FIG. 11, the same parameter (MCS) is set for RUs that constitute six discontinuous bands other than the central RU among seven consecutive RA RUs.
- the AP 100 sets a plurality of modified User Infos in one Trigger ⁇ frame, so that a part of RUs for which performance degradation is expected (eg DC A robust MCS (for example, QPSK) can be set for a nearby RU).
- DC A robust MCS for example, QPSK
- the AP 100 can set parameters according to the expected RU performance. It can be indicated with a small Trigger frame size (that is, a small number of User Info fields).
- the method for assigning RUs for RA by a plurality of modified User Info included in one Trigger frame is not limited to the example shown in FIG.
- the AP 100 may indicate RUs that do not overlap each other with two modified User Info included in one Trigger frame.
- the AP 100 instructs four RUs for RA with the first modified User Info, and instructs MCS # 1 (for example, 16QAM) to these RUs.
- MCS # 1 for example, 16QAM
- the AP 100 determines three RA RUs in an area adjacent to four RA RUs (that is, non-overlapping areas) indicated by the first modified User Info in the second modified User ⁇ ⁇ Info.
- MCS # 2 eg QPSK
- the AP 100 may indicate RUs in areas separated from each other by two modified User Info included in one Trigger frame.
- the AP 100 indicates four RA RUs with the first modified User Info, and for the four RAs indicated by the first modified User Info with the second modified User Info.
- Three RUs for RA in an area away from RA that is, not overlapping are indicated.
- MCS # 1 is applied to the RU notified by any modified User Info, but a different parameter may be designated for each modified User Info. That is, a common parameter such as MCS may be set for a plurality of modified User Info, or a different parameter may be set for each modified User Info as in FIG. Further, as shown in FIG. 13, there is an arbitrary RU such as a Scheduled access RU or an unspecified free RU (unassigned RU) between two distant areas respectively designated by a plurality of modified User Info. RU may be present. Note that if common Coding Type, MCS, and DCM parameters are set for all RUs notified by a plurality of modified User Info, it becomes difficult to make flexible settings according to transmission characteristics for each RU.
- the terminal when the terminal obtains the transmission right, one RU is randomly selected from all the random access RUs. Therefore, if the amount of data that can be transmitted in RUs notified by a plurality of modified User Info differs from each other, it is necessary for the terminal to determine the data amount of the transmission frame after selecting the RU, and the transmission frame generation processing becomes complicated . Therefore, by using a common parameter for a plurality of modified User Info, the amount of data that can be transmitted in all the random access RUs becomes constant, so that the transmission frame generation process in the terminal can be simplified.
- the AID control units 103 and 205 determine a plurality of unused AIDs for instructing User Info (modified User Info or normal User Info) that indicates the RA RU.
- a parameter (MCS) different from other RUs is set for the central RU among seven consecutive RA RUs. That is, in FIG. 14, the same parameter (MCS) is set for RUs that constitute six non-consecutive bands other than the central RU among seven consecutive RA RUs.
- the AP 100 can reduce the Trigger frame size by instructing continuous RA RUs using the modified User-Info.
- the number of spatially multiplexed streams can be set (that is, application of MIMO) in SS allocation subfield by using normal User Info.
- the RA RUs indicated by one Trigger frame are not limited to the continuous RUs as shown in FIG. 14.
- the RA RUs indicated by one Trigger frame are not limited to the continuous RUs as shown in FIG. 14.
- FIG. RU may be indicated.
- the RA resource determination unit 206 of the terminal 200 prioritizes the normal User Info instruction for overlapping RUs.
- MCS # 2 is applied with priority given to the normal User Info instruction with respect to the central RU.
- a plurality of parameters can be used properly between RA RUs indicated by one Trigger frame.
- the AP 100 may individually set a robust MCS with high error tolerance by normal User Info for a part of RUs (for example, the central RU) where performance degradation is expected. Good.
- the AP 100 can respond to the expected RU performance.
- Parameters can be specified with a small Trigger frame size (that is, a small number of User Info fields).
- a small Trigger frame size that is, a small number of User Info fields.
- each of a plurality of types of unused AIDs is associated with a constraint condition (terminal constraint condition) of the terminal 200 that transmits the RA signal. That is, the AP 100 instructs the terminal restriction condition of the terminal 200 that transmits the RA signal using a plurality of unused AIDs.
- the AP 100 instructs the connection condition of the terminal 200 as a different terminal restriction condition for each unused AID indicating the modified User Info.
- the terminal 200 that transmits the RA signal by each RU can be divided into Associated STA and Unassociated STA.
- the AP 100 can set an appropriate parameter for each connection condition of the terminal 200.
- the AP 100 since the AP 100 already holds information about the Associated STA (communication status of the terminal 200), it is possible to appropriately adjust uplink parameters (power or MCS, etc.) for the Associated STA. On the other hand, the AP 100 does not hold information related to the Unassociated STA, and therefore sets a robust value with strong error tolerance as an uplink parameter for the Unassociated STA. Therefore, as shown in FIG. 17, the AP 100 divides RA RUs into Associated STA and Unassociated STA, and schedules such that OFDMA multiplexing is not performed in the same packet, for example, different parameters (for example, transmission power) can be obtained. Interference between the set terminals 200 can be reduced. In addition, the AP 100 can prevent performance degradation by setting an MCS having higher error tolerance for the Unassociated STA.
- the AP 100 may instruct the transmission power condition of the terminal 200 as a different terminal constraint condition for each unused AID indicating the modified User Info (not shown).
- the AP 100 performs scheduling so that the terminal 200 that cannot transmit with the requested uplink transmission power and the terminal 200 that can transmit with the requested uplink transmission power are not subjected to OFDMA multiplexing with the same packet, for example. Interference can be reduced. Also, the AP 100 can prevent performance degradation by setting an MCS with higher error tolerance for the terminal 200 that cannot transmit with the requested uplink transmission power.
- Trigger Dependent user Info information in User Info field that is, when using A-MPDU (Aggregate MAC protocol data unit) concatenating multiple MPDUs
- A-MPDU Aggregate MAC protocol data unit
- terminal restriction conditions are not limited to the connection conditions, transmission power conditions, and transmission data restriction conditions of the terminal 200 described above.
- the AP 100 appropriately schedules the RA RU according to the state of the terminal 200 by instructing a plurality of unused AIDs in association with the constraint conditions of the terminal 200. it can.
- the RA RUs indicated by one Trigger frame are not limited to the continuous RUs as shown in FIG. 17, for example, as shown in FIG.
- the RU of the area may be indicated.
- the Trigger frame generation unit 104 of the AP 100 uses the modified User Info indicating one or more consecutive random access resource units in Scheduled access in the Trigger frame. Set an unused AID that will not be used. Thereby, the terminal 200 can determine whether or not the User Info field is the modified User Info based on the value of the AID indicated in the AID12 subfield of each User Info field of the Trigger frame.
- the throughput can be improved by applying the parameter according to the performance assumed for each of the plurality of RA RUs indicated by the Trigger frame.
- the User Info field includes the Trigger Dependent User User Info subfield, Notifying uplink transmission data restriction information (such as the limit on the number of MPDU connections or recommended AC) shown in FIG. 5 is useful for RA transmission as well as Scheduled access transmission.
- the wireless communication system includes an AP (wireless transmission device) 300 and a terminal (wireless reception device) 400.
- the AP 300 transmits a Trigger frame that instructs RA transmission to the terminal 400, the terminal 400 receives the Trigger frame, and transmits the RA to the AP 300 using the resource indicated by the Trigger frame.
- FIG. 19 is a block diagram showing a configuration of AP 300 according to the present embodiment.
- the same reference numerals are given to components that perform the same operations as those in the first embodiment (FIG. 8), and the description thereof is omitted.
- the AP 300 differs from the AP 100 (FIG. 8) according to Embodiment 1 in that a Trigger dependency information control unit 301 is added and the operation of the Trigger frame generation unit 302 is different.
- the Trigger dependency information control unit 301 determines Trigger dependency information (Trigger Dependent Common Info or Trigger Dependent User Info) according to Trigger Type, and arranges Trigger dependency information (constraint information of uplink transmission data) and Trigger dependency information The information indicating the field and subfield to be output to the Trigger / frame generation unit 302.
- the arrangement of the Trigger dependency information in the Trigger frame is defined by, for example, specifications, and is recognized between the transmitting / receiving devices (between the AP 300 and the terminal 400).
- Trigger Type is Basic Trigger and the format of User Info field is modified User Info
- the constraint information of uplink transmission data is included in the Trigger frame as Trigger dependency information. A method for applying the Trigger dependency information to the terminal 400 will be described later.
- the Trigger frame generation unit 302 sets Trigger dependency information in predetermined fields and subfields of the Trigger frame according to instructions from the Trigger dependency information control unit 301.
- FIG. 20 is a block diagram showing a configuration of terminal 400 according to the present embodiment. Note that, in FIG. 20, the same reference numerals are given to configurations that perform the same operations as those in Embodiment 1 (FIG. 9), and description thereof is omitted. Specifically, terminal 400 differs from terminal 200 (FIG. 9) according to Embodiment 1 in that Trigger dependency information acquisition unit 401 is added and operation of RA generation unit 402.
- the Trigger dependency information acquisition unit 401 acquires Trigger dependency information (Trigger Dependent Common Info or Trigger Dependent User Info) from the Trigger ⁇ ⁇ frame output from the Trigger frame decoding unit 204, and sends the acquired Trigger dependency information to the RA generation unit 402. Output.
- Trigger dependency information Trigger Dependent Common Info or Trigger Dependent User Info
- the RA generation unit 402 is based on the control information for generating the RA RU and RA signal determined by the RA resource determination unit 206, and the Trigger dependency information output from the Trigger dependency information acquisition unit 401, and the terminal ID and An RA signal including transmission information (data or control information) of terminal 400 is generated.
- the AP 300 instructs the restriction information of the uplink transmission data as the Trigger dependency information even when the format of the User Info field is the modified User Info.
- the terminal 400 can identify the size of each User Info field in the Trigger frame ( In order to grasp the boundary of each User Info field), it is necessary to decode the AID12 subfield of each User Info field, and the reception processing of the terminal 400 becomes complicated.
- Upstream data restriction information is set as Trigger dependency information including Trigger Dependent User User Info subfield in the modified User Info.
- the trigger frame generation unit 302 of the AP 300 sets the restriction information at the time of transmission of the uplink signal in the modified user information.
- Basic Trigger is set in Trigger Type subfield of Common Info field.
- the restriction information of the uplink transmission data is set for each terminal as Trigger Dependent User Info.
- the restriction information of the uplink transmission data to be applied to the RA RU is set as the Trigger Dependent User Info.
- the terminal 400 when the Trigger Type included in the Common Info of the Trigger frame is Basic Trigger, the terminal 400 has a size (for example, 5 bytes) in which all the User Info fields contain the Trigger Dependent User Info, that is, the same size. It can be judged. That is, the terminal 400 does not need to decode AID12
- the reception process of the terminal 400 can be simplified.
- AP300 can notify Trigger
- fixed constraints on uplink data transmitted by the terminal 400 include, for example, MPDU MU Spacing Factor and TID Aggregation ⁇ ⁇ ⁇ Limit as shown in FIG. MPDU). Thereby, delay of the response time of AP300 can be prevented.
- the trigger frame generation unit 302 of the AP 300 sets restriction information when transmitting an uplink signal in the common info.
- the restriction information at the time of transmission of the uplink signal is not set in the User Info field regardless of the format of the User Info field (modified User Info and normal User Info). For this reason, as shown in FIG. 23, even when Trigger Type is Basic Trigger, both of the modified User Info and normal User Info do not include Trigger Dependent User Info Info subfield.
- Example 3 regardless of the format of User Info field, Trigger Dependent ⁇ ⁇ user Info field is not included in User Info. Therefore, as in Example 1, the sizes of all User Info fields are unique from Trigger ⁇ Type. Determined. Therefore, the terminal 400 does not need to decode the AID12
- field Therefore The receiving process of the terminal 400 can be simplified.
- RA RUs designated by one Trigger frame are continuous RUs
- the present invention is not limited to this, but the first embodiment (for example, FIG. 13, FIG. 15 and FIG. 18), RUs of discontinuous regions separated from each other may be indicated by one Trigger frame (not shown).
- the operation described in the present embodiment is not limited to the operation when Trigger Type is Basic Trigger.
- Trigger Type includes Trigger Dependent User Info
- the operation of the present embodiment can be applied in the same manner and the same effect can be obtained.
- the RA instruction by the modified User Info or the normal User Info shown in the above embodiment and the instruction of the Scheduled access RU may be mixed. Good.
- the modified User Info is instructed using the Reserved area (1 bit) of the User ⁇ ⁇ Info field. May be.
- one bit of the Reserved area may be used to specify the format of User ⁇ ⁇ Info field indicating whether it is a modified User Info or a normal User Info.
- a notification order is specified in which the Scheduled access RU is notified first and then the RA RU is notified for the User Info in the Trigger frame.
- the reception process of the terminal is simplified by defining the notification order for these User Infos. be able to.
- notification may be specified in the order of the modified User Info having a large number of consecutive RUs to be instructed.
- the notification order in this manner, as in the above-described embodiment (see, for example, FIG. 11), when the instructed RUs are duplicated, the instruction of the modified User Info having a large number of consecutive RUs is displayed.
- the terminal reception process can be simplified in the case of overwriting with the instructions of the modified User Info with few.
- Each functional block used in the description of the above embodiment is partially or entirely realized as an LSI that is an integrated circuit, and each process described in the above embodiment may be partially or entirely performed. 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 the functional blocks.
- the LSI may include data input and output.
- An LSI may be referred to as an IC, a system LSI, a super LSI, or an ultra LSI depending on the degree of integration.
- the method of circuit integration is not limited to LSI, and may be realized by a dedicated circuit, a general-purpose processor, or a dedicated processor.
- an FPGA Field Programmable Gate Array
- a reconfigurable processor that can reconfigure the connection and setting of circuit cells inside the LSI may be used.
- the present disclosure may be implemented as digital processing or analog processing.
- integrated circuit technology comes out to replace LSI's as a result of the advancement of semiconductor technology or a derivative other technology, it is naturally also possible to carry out function block integration using this technology. Biotechnology can be applied.
- the trigger signal When the communication apparatus of the present disclosure generates a trigger signal that instructs transmission of an uplink signal, and the trigger signal includes a first terminal information field that indicates one or more resource units for random access,
- the terminal ID subfield in the first terminal information field includes a trigger signal generation unit that sets an unused ID that is not used as a terminal ID, and a transmission unit that transmits the generated trigger signal.
- the trigger signal when the trigger signal includes a plurality of first terminal information fields, one or more resource units for continuous random access indicated by each of the plurality of first terminal information fields are In the case of overlapping, in the resource unit that overlaps, priority is given to an instruction in a terminal information field with a small number of indicated resource units among a plurality of first terminal information fields.
- the trigger signal generation unit sets the first unused ID in the terminal ID subfield in the first terminal information field among a plurality of types of unused IDs, and uses one random access
- the second unused ID is set in the terminal ID subfield in the second terminal information field in which the resource unit is indicated, the resource unit indicated in the first terminal information field, and the second terminal information field If the resource unit specified in (1) overlaps, the instruction in the second terminal information field is given priority in the overlapping resource unit.
- each of a plurality of types of unused IDs is associated with a constraint condition of a terminal that transmits a random access signal.
- the trigger signal generation unit sets information indicating restrictions at the time of transmission of the uplink signal in the first terminal information field.
- the trigger signal when the trigger signal is of a type that does not limit the format of the uplink signal, one or more consecutive random access resource units are indicated by the first terminal information field of the trigger signal.
- restrictions at the time of transmission of the uplink signal are applied.
- the trigger signal generation unit when the trigger signal is of a type that does not limit the format of the uplink signal, the trigger signal generation unit does not set information indicating restrictions on transmission of the uplink signal in the first terminal information field. Are set in a common information field including information common to terminals.
- the communication method of the present disclosure When the communication method of the present disclosure generates a trigger signal that instructs transmission of an uplink signal, and the trigger signal includes a first terminal information field that indicates one or more resource units for random access, An unused ID that is not used as a terminal ID is set in the terminal ID subfield in the first terminal information field, and the generated trigger signal is transmitted.
- One aspect of the present disclosure is useful as an effective use or reduction of redundant fields.
- Trigger frame generation unit 105 208 Transmission signal modulation unit 106, 202 Radio transmission / reception unit 107, 201 Antenna 108, 203 Reception signal demodulation unit 109 Quality estimation Unit 200, 400 Terminal 204 Trigger frame decoding unit 206 RA resource determination unit 207, 402 RA generation unit 301 Trigger dependency information control unit 401 Trigger dependency information acquisition unit
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Abstract
Description
[Trigger frame]
図1は、11axで検討されているTrigger frameのフォーマットの一例を示す図である。Trigger frameでは、OFDMAで多重する複数の端末に共通の情報を含めるCommon Info fieldと、OFDMAで多重する端末毎の固有情報を含めるUser Info fieldが定義される(例えば、非特許文献1を参照)。
図6Aは、変形User Infoのフォーマットの一例を示す図である。
本実施の形態に係る無線通信システムは、AP(無線送信装置)100および端末(無線受信装置)200を備える。AP100が端末200に対して、RA送信を指示するTrigger frameを送信し、端末200がTrigger frameを受信し、Trigger frameで指示されたリソースを用いてRAをAP100へ送信する。
図8は、本実施の形態に係るAP100の構成を示すブロック図である。AP100は、端末200に対して上り信号(例えば、RA信号)の送信を指示するTrigger frame(トリガー信号)を生成し、Trigger frameを端末200へ送信する。
図9は、本実施の形態に係る端末200の構成を示すブロック図である。端末200は、RA送信を指示するTrigger frameをAP100から受信し、Trigger frameで指示されたRA用RUからランダムに1つのRUを選択し、AP100にRA信号を送信する。
次に、本実施の形態のAP100および端末200の動作について詳細に説明する。
具体例1では、RA用RUを指示する場合に設定される未使用AIDは1種類である。
具体例1-1では、AP100のTrigger frame生成部104は、1つのTrigger frameで1つの変形User Infoを設定する。
具体例1-2では、AP100のTrigger frame生成部104は、1つのTrigger frameで複数の変形User Infoを設定する。
具体例2では、RA用RUを指示する場合に設定される未使用AIDは複数種類ある。
具体例2-1では、AP100のTrigger frame生成部104は、通常User Info(AID=0)で指示したRA用RUと、変形User Info (AID≠0の未使用AID)で指示した連続RA用RUを端末200へ指示する。
具体例2-2では、複数種類の未使用AIDの各々に、RA信号を送信する端末200の制約条件(端末制約条件)がそれぞれ対応付けられる。すなわち、AP100は、複数の未使用AIDを用いて、RA信号を送信する端末200の端末制約条件を指示する。
以上のように、本実施の形態によれば、AP100のTrigger frame生成部104は、Trigger frameにおいて、1つ以上の連続するランダムアクセス用のリソースユニットを指示する変形User Infoに、Scheduled accessで使用されない未使用AIDを設定する。これにより、端末200は、Trigger frameの各User Info fieldのAID12 subfieldに示されるAIDの値に基づいて、当該User Info fieldが変形User Infoであるか否かを判定することができる。
例えば、図6A等を用いて説明したように、変形User Infoが設定される場合、Trigger Dependent Common Info subfieldおよびTrigger Dependent User Info subfieldを削除することでTrigger frameサイズを削減することが検討されている。
図19は、本実施の形態に係るAP300の構成を示すブロック図である。なお、図19において、実施の形態1(図8)と同様の動作を行う構成には同一の符号を付し、その説明を省略する。具体的には、AP300は、実施の形態1に係るAP100(図8)に対して、Trigger依存情報制御部301が追加された点と、Trigger frame生成部302の動作が異なる。
図20は、本実施の形態に係る端末400の構成を示すブロック図である。なお、図20において、実施の形態1(図9)と同様の動作を行う構成には同一の符号を付し、その説明を省略する。具体的には、端末400は、実施の形態1に係る端末200(図9)に対して、Trigger依存情報取得部401が追加された点と、RA生成部402の動作が異なる。
次に、本実施の形態のAP300および端末400の動作について詳細に説明する。
図6Aに示すように変形User InfoにTrigger Dependent User Info subfieldを含まないTrigger frameにおいて、Trigger TypeがBasic Triggerである場合、端末400がTrigger frameの各User Info fieldのサイズを識別するためには(各User Info fieldの境界を把握するためには)、各User Info fieldのAID12 subfieldを復号する必要があり、端末400の受信処理が複雑化する。
具体例2では、Trigger frameのTrigger TypeがBasic Triggerである場合、当該Trigger frameの変形User Infoによって1つ以上の連続するRA用RUが指示される端末400に対して、上り信号の送信時の制約が適用される。
具体例3では、Trigger TypeがBasic Triggerの場合、図23に示すように、Common InfoにTrigger Dependent Common Info subfieldを含めて、OFDM多重される全ての端末400で共通のパラメータとしてデータ送信時の制約情報が設定される。
(1)図24に示すように、1つのTrigger frameにおいて、上記実施の形態で示した変形User Info又は通常User InfoによるRA用RUの指示と、Scheduled access用RUの指示とを混在させてもよい。
101 RAリソース制御部
102 User Info制御部
103,205 AID制御部
104,302 Trigger frame生成部
105,208 送信信号変調部
106,202 無線送受信部
107,201 アンテナ
108,203 受信信号復調部
109 品質推定部
200,400 端末
204 Trigger frame復号部
206 RAリソース決定部
207,402 RA生成部
301 Trigger依存情報制御部
401 Trigger依存情報取得部
Claims (11)
- 上り信号の送信を指示するトリガー信号を生成し、前記トリガー信号は、端末IDサブフィールドとリソースユニット割当情報サブフィールドとを含む端末情報フィールドを含み、前記トリガー信号が、1つ以上の連続するランダムアクセス用のリソースユニットを指示する第1の端末情報フィールドを有する場合は、前記第1の端末情報フィールド中の前記端末IDサブフィールドに、端末IDとしては使用されない未使用IDを設定するトリガー信号生成部と、
前記生成されたトリガー信号を送信する送信部と、
を具備する通信装置。 - 前記トリガー信号が、2つ以上の連続するランダムアクセス用のリソースユニットを指示する端末情報フィールドを有する場合は、前記端末情報フィールド中の前記リソースユニット割当情報サブフィールドは、前記2つ以上の連続するランダムアクセス用のリソースユニットの開始リソースユニット位置を示し、前記端末情報フィールドは、ランダムアクセス用の連続リソースユニット数を示す別のサブフィールドをさらに含む、
請求項1に記載の通信装置。 - 前記トリガー信号が、前記第1の端末情報フィールドと、1つのリソースユニットを指示する第2の端末情報フィールドとを有する場合であって、前記第2の端末情報フィールドによって指示される前記1つのリソースユニットが、前記1つ以上の連続するランダムアクセス用のリソースユニットに含まれる場合、前記1つのリソースユニットは、前記ランダムアクセス用のリソースユニットから除外される、
請求項1に記載の通信装置。 - 第1の未使用IDと第2の未使用IDとを含む複数の未使用IDが存在する、
請求項1に記載の通信装置。 - 前記トリガー信号生成部は、前記第1の端末情報フィールド中の端末IDサブフィールドに、前記第1の未使用IDを設定し、1つのリソースユニットを指示する第2の端末情報フィールド中の端末IDサブフィールドに前記第2の未使用IDを設定し、
前記第1の端末情報フィールドで指示される前記1つ以上の連続するランダムアクセス用のリソースユニットと、前記第2の端末情報フィールドで指示される前記1つのリソースユニットとが重複する場合、当該重複する1つのリソースユニットは、前記ランダムアクセス用のリソースユニットから除外される、
請求項4に記載の通信装置。 - 前記複数の未使用IDの各々には、ランダムアクセス信号を送信する端末の制約条件がそれぞれ対応付けられる、
請求項4に記載の通信装置。 - 前記第1の未使用IDは、ランダムアクセス信号を送信する端末を前記通信装置にアソシエートされた端末に限定することを示し、第2の未使用IDは、ランダムアクセス信号を送信する端末を前記通信装置にアソシエートされていない端末に限定することを示す、
請求項6に記載の通信装置。 - 前記トリガー信号生成部は、前記第1の端末情報フィールドに、前記上り信号の送信時の制約を示す情報を設定する、
請求項1に記載の通信装置。 - 当該トリガー信号の前記第1の端末情報フィールドによって前記1つ以上の連続するランダムアクセス用のリソースユニットが指示される端末に対して、前記上り信号の送信時の制約が適用される、
請求項1に記載の通信装置。 - 前記トリガー信号生成部は、前記上り信号の送信時の制約を示す情報を、前記第1の端末情報フィールドに設定せずに、端末共通の情報を含める共通情報フィールドに設定する、
請求項1に記載の通信装置。 - 上り信号の送信を指示するトリガー信号を生成し、前記トリガー信号は、前記トリガー信号のタイプを示すトリガータイプサブフィールドを含む共通情報フィールドと、端末IDサブフィールドとリソースユニット割当情報サブフィールドとを含む端末情報フィールドとを含み、前記トリガー信号が、1つ以上の連続するランダムアクセス用のリソースユニットを指示する第1の端末情報フィールドを有する場合は、前記第1の端末情報フィールド中の前記端末IDサブフィールドに、端末IDとしては使用されない未使用IDを設定し、
前記生成されたトリガー信号を送信する、
通信方法。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211016852.0A CN115499796B (zh) | 2017-02-21 | 2018-02-06 | 通信装置和通信方法 |
| EP18757414.0A EP3589011B1 (en) | 2017-02-21 | 2018-02-06 | Communication device and communication method |
| RU2019121434A RU2755679C2 (ru) | 2017-02-21 | 2018-02-06 | Устройство связи и способ связи |
| EP24193155.9A EP4436301A3 (en) | 2017-02-21 | 2018-02-06 | Communication device and communication method |
| US16/473,368 US11071140B2 (en) | 2017-02-21 | 2018-02-06 | Communication apparatus and communication method |
| CN202211016929.4A CN115499798B (zh) | 2017-02-21 | 2018-02-06 | 用于通信装置的集成电路 |
| CN201880005366.4A CN110100475B (zh) | 2017-02-21 | 2018-02-06 | 通信装置和通信方法 |
| AU2018224614A AU2018224614A1 (en) | 2017-02-21 | 2018-02-06 | Communication Apparatus and Communication Method |
| MX2019007669A MX2019007669A (es) | 2017-02-21 | 2018-02-06 | Dispositivo de comunicacion y metodo de comunicacion. |
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| CN118012633A (zh) * | 2024-04-10 | 2024-05-10 | 成都航空职业技术学院 | 一种针对高职公共体育课程的资源分配方法和系统 |
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