WO2022127764A1 - 信息传输方法、装置、iab节点及网络设备 - Google Patents
信息传输方法、装置、iab节点及网络设备 Download PDFInfo
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- WO2022127764A1 WO2022127764A1 PCT/CN2021/137735 CN2021137735W WO2022127764A1 WO 2022127764 A1 WO2022127764 A1 WO 2022127764A1 CN 2021137735 W CN2021137735 W CN 2021137735W WO 2022127764 A1 WO2022127764 A1 WO 2022127764A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
- H04W72/231—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal the control data signalling from the layers above the physical layer, e.g. RRC or MAC-CE signalling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
- H04W72/232—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal the control data signalling from the physical layer, e.g. DCI signalling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/27—Control channels or signalling for resource management between access points
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/04—Terminal devices adapted for relaying to or from another terminal or user
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
- H04W88/085—Access point devices with remote components
Definitions
- the present application belongs to the field of communication technologies, and in particular, relates to an information transmission method, an apparatus, an IAB node and a network device.
- the Integrated Access Backhaul (IAB) system is a technology that has been standardized since the 16th Release (Release 16, Rel-16) of the New Radio (New Radio, NR).
- An IAB node includes a distributed unit (Distributed Unit, DU) functional part and a mobile device (Mobile Termination, MT) functional part.
- DU distributed Unit
- MT Mobile Termination
- all DUs of IAB nodes are connected to a central unit (Centralized Unit, CU) node, and the CU node passes through the F1 control plane interface (F1-C) or the F1 application protocol (F1- AP protocol) configures the DU, and configures the MT through the Radio Resource Control (Radio Resource Control, RRC) protocol.
- F1-C F1 control plane interface
- F1- AP protocol F1 application protocol
- RRC Radio Resource Control
- DU and MT can use time division multiplexing (TDM), space division multiplexing (SDM) or frequency division multiplexing (Frequency-division multiplexing, FDM).
- TDM time division multiplexing
- SDM space division multiplexing
- FDM frequency division multiplexing
- Embodiments of the present application provide an information transmission method, apparatus, IAB node, and network equipment, so as to provide a method for coordinating information transmission between IAB nodes or within IAB nodes by using frequency domain resources, thereby reducing the number of IAB nodes or IAB nodes. Interference within the node.
- an embodiment of the present application provides an information transmission method, and the method includes:
- Information transmission is performed according to the frequency domain availability of the distribution unit DU of the IAB node;
- the frequency domain availability of the DU of the IAB node is indicated by the parent IAB node of the IAB node, or configured by the central unit CU, or predefined by a protocol.
- the embodiments of the present application also provide an information transmission method, the method comprising:
- the frequency domain availability of the DUs of the IAB node is indicated to the IAB node.
- an information transmission device comprising:
- a transmission module configured to transmit information according to the frequency domain availability of the distribution unit DU of the IAB node
- the frequency domain availability of the DU of the IAB node is indicated by the parent IAB node of the IAB node, or configured by the central unit CU, or predefined by a protocol.
- an embodiment of the present application further provides an information transmission device, the device comprising:
- the first indicating module is configured to indicate the frequency domain availability of the DU of the IAB node to the IAB node.
- embodiments of the present application further provide an IAB node, where the IAB node includes a processor, a memory, and a program or instruction stored on the memory and executable on the processor, the program or instruction
- the steps of the method of the first aspect are implemented when executed by the processor.
- an embodiment of the present application further provides a network device, the network device includes a processor, a memory, and a program or instruction stored on the memory and executable on the processor, the program or instruction The steps of the method of the second aspect are implemented when executed by the processor.
- an embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, the method according to the first aspect is implemented. steps, or steps for implementing the method according to the second aspect.
- an embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used for running a program or an instruction to implement the above-mentioned first step.
- the chip includes a processor and a communication interface
- the communication interface is coupled to the processor
- the processor is used for running a program or an instruction to implement the above-mentioned first step.
- a computer program product is provided, the computer program product is stored in a non-transitory storage medium, the computer program product is executed by at least one processor to implement the method according to the first aspect above , or implement the method described in the second aspect above.
- a tenth aspect provides a communication device configured to perform the method as described in the first aspect above, or to perform the method as described in the second aspect above.
- information transmission is performed according to the frequency domain availability of the DU of the IAB node; wherein, the frequency domain availability of the DU of the IAB node is indicated by the parent IAB node of the IAB node, or is configured by the central unit CU, Or predefined by the protocol.
- the frequency domain availability of DUs is indicated by the parent IAB node of the IAB node, or is configured by the central unit CU, Or predefined by the protocol.
- FIG. 1 is a schematic structural diagram of an IAB system provided by an embodiment of the present application.
- FIG. 2 is a schematic structural diagram of a CU-DU of an AB system provided by an embodiment of the present application
- FIG. 3 is a structural diagram of a network system to which an embodiment of the present application can be applied;
- FIG. 5a is one of the schematic diagrams of the location of the frequency domain availability indication in the DCI provided by the embodiment of the present application.
- FIG. 5b is the second schematic diagram of the location of the frequency domain availability indication in the DCI provided by the embodiment of the present application.
- FIG. 5c is the third schematic diagram of the position of the frequency domain availability indication in the DCI provided by the embodiment of the present application.
- FIG. 6 is a flowchart of an information transmission method provided by an embodiment of the present application.
- FIG. 7 is a structural diagram of an information transmission device provided by an embodiment of the present application.
- FIG. 8 is a structural diagram of another information transmission apparatus provided by an embodiment of the present application.
- FIG. 9 is a structural diagram of an IAB node provided by an embodiment of the present application.
- FIG. 10 is a structural diagram of a network device provided by an embodiment of the present application.
- first, second and the like in the description and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and "first”, “second” distinguishes Usually it is a class, and the number of objects is not limited.
- the first object may be one or multiple.
- “and/or” in the description and claims indicates at least one of the connected objects, and the character “/" generally indicates that the associated objects are in an "or” relationship.
- LTE Long Term Evolution
- LTE-Advanced LTE-Advanced
- LTE-A Long Term Evolution
- CDMA Code Division Multiple Access
- TDMA Time Division Multiple Access
- FDMA Frequency Division Multiple Access
- OFDMA Orthogonal Frequency Division Multiple Access
- SC-FDMA Single-carrier Frequency-Division Multiple Access
- system and “network” in the embodiments of the present application are often used interchangeably, and the described technology can be used not only for the above-mentioned systems and radio technologies, but also for other systems and radio technologies.
- NR New Radio
- NR terminology is used in most of the following description, although these techniques are also applicable to applications other than NR system applications, such as 6th generation ( 6th Generation, 6G) communication system.
- IAB Integrated Access Backhaul
- an IAB node includes a distributed unit (Distributed Unit, DU) functional part and a mobile device (Mobile Termination, MT) functional part. Relying on MT, an access IAB node (ie IAB node) can find an upstream IAB node (ie parent IAB node) and establish a wireless connection with the DU accessing the IAB node, the wireless connection is called backhaul link (ie backhaul link).
- DU Distributed Unit
- MT Mobile Termination
- a self-access backhaul loop also includes a host IAB node (that is, the donor IAB node), and the host IAB node has a directly connected wired transmission network.
- FIG. 2 is a schematic structural diagram of a central unit-distributed unit (Centralized Unit-Distributed Unit, CU-DU) of an IAB system.
- CU-DU central unit-distributed unit
- all DUs of IAB nodes are connected to a CU node, which includes CU control plane (ie CU-CP) and CU user plane (ie CU-UP).
- the DU is configured through the F1-C or F1-AP (that is, the F1 application protocol) protocol
- the MT is configured through the Radio Resource Control (Radio Resource Control, RRC) protocol.
- the host IAB node has no MT functional part.
- the introduction of the IAB system is aimed at the situation where the wired transmission network is not in place when the access points are densely deployed, that is, when there is no wired transmission network, the access points can rely on wireless backhaul.
- TDM Time-Division Multiplexing
- TDMed time-division multiplexed
- the transceiver operation modes of DU and MT can include the following duplex modes or Reuse method:
- Distributed unit transmit port (Distributed Unit Transmit X, DU-TX) & mobile terminal transmit port (Mobile Termination Transmit X, MT-TX), that is, DU is configured as downlink (Downlink, DL), MT is configured as uplink ( Uplink, UL); or DU has actual DL transmission, MT has actual UL transmission;
- Distributed unit receiving port Distributed Unit Receive X, DU-RX
- mobile terminal receiving port Mobile Termination Receive X, MT-RX
- DU Distributed Unit Receive X
- MT-RX Mobile Termination Receive X
- DU-TX&MT-RX that is, DU is configured as DL, and MT is configured as DL; or DU has actual DL transmission, and MT has actual DL reception;
- DU-RX & MT-TX that is, DU is configured as UL and MT is configured as UL; or DU has actual UL reception and MT has actual UL transmission.
- DU TX and DU DL can be used in common
- MT TX and MT UL can be used in common
- DU RX and DU UL can be used in common
- MT RX and MT DL can be used in common.
- flexible (ie, flexible) configuration can be identical to DL/UL configuration processing, or can be independent of DL/UL configuration processing.
- the host node CU configures the time domain resources of the DU through the signaling gNB-DU resource configuration (ie gNB-DU resource configuration) in the F1-AP (or F1-C).
- the transmission type of symbols (symbols) in each time slot is configured, and the symbol types include DL/UL/flexible symbols (flexible symbols).
- the availability of symbols of each type of the configuration DU may include configuration of hard (hard) type/soft (soft) type/Not Available (NA) type/shared type. Among them, the availability is based on the symbol type as the configuration unit, which may include the following situations.
- the IAB DU can be sent on the symbol; if the UL symbol is configured as the hard type, the IAB DU can be received on the symbol; if the flexible symbol is configured as the hard type, Then the IAB DU can be sent or received on this symbol.
- the IAB DU can be sent on this symbol; otherwise, it is not sent on this symbol; if the UL symbol is configured as soft type , if the reception of the IAB DU does not affect the transmission or reception of the MT, the IAB DU can be received on this symbol; otherwise, it is not received on this symbol; if the flexible symbol is configured as a soft type, if the IAB DU is sent or received.
- the IAB parent node may indicate the availability of the soft symbol (soft symbol) of the IAB DU through downlink control information (Downlink Control Information, DCI) format 2_5 (format 2_5) (that is, DCI format 2_5).
- DCI Downlink Control Information
- the IAB DU is neither transmitted nor received on this symbol.
- the IAB DU may be able to send and receive data simultaneously with the IAB MT on this symbol.
- the available frequency domain resource of the DU is the bandwidth of the DU cell (cell).
- the CU can configure several carriers (carriers) that the DU can use, and the DU can schedule resources on the configured carriers.
- frequency domain resources of DU For frequency domain resources of DU, the availability of frequency domain resources can be configured as hard type/soft type/NA type/shared type. in:
- the IAB DU can be sent/received/sent or received on the frequency domain resource;
- the IAB DU can be sent on the DL frequency domain resource when the transmission of the IAB DU on the DL frequency domain resource does not affect the transmission or reception of the MT; otherwise, the IAB DU can be sent on the DL frequency domain resource.
- the frequency domain resources are not sent; if the UL frequency domain resources are configured as soft type, the IAB DU can be sent on the UL frequency domain resources when the reception of the IAB DU on the UL frequency domain resources does not affect the transmission or reception of the MT.
- the IAB DU on the flexible frequency domain
- the sending or receiving of the resource does not affect the sending or receiving of the MT, the IAB
- the DU can be sent or received on the flexible frequency domain resource; otherwise, no transmission or reception is performed on the flexible frequency domain resource.
- the IAB DU is neither sent nor received on the frequency domain resource
- the IAB DU and the IAB MT can simultaneously send and receive data on the frequency domain resource.
- Downlink control information Downlink control information, DCI
- format 2_5 format 2_5
- DCI format 2_5 format 2_5
- DCI format 2_5 format 2_5
- IAB DU serving cell identification iabDuCellId-AI
- AI Availability Indicator
- a set of availability combination indications (AvailabilityCombinations), wherein each availability combination indication includes:
- Resource Availability for indicating the availability of soft-type symbol resources in one or more time slots
- the IAB-DU assumes that the availability combination adopts the configuration of the SCS provided by the IAB-DU uplink and downlink configuration (IAB-DU-Resource-Configuration-TDD-Config).
- An AI indication in DCI format 2_5 indicates the availability of one or more time slots for the IAB DU.
- the size of the AI indication is max ⁇ ceil(log2(maxAIindex+1)), 1 ⁇ bits (bit), where maxAIindex represents the largest AI index (index).
- the availability of a soft type symbol is obtained according to the AI index and a table configured by Radio Resource Control (RRC). Specifically, the availability indication of soft-type symbols in one slot (slot) may be as shown in Table 1.
- an optional implementation code of the RRC configuration can be as follows:
- the time domain availability indication in DCI format 2_5 first find the corresponding time domain indication number (Entry), then under the time domain indication number, and then according to the frequency domain availability indication, find the corresponding frequency domain. Domain availability combination. That is, the frequency domain resource indication is an indication embedded under each time domain indication number.
- FIG. 3 shows a structural diagram of a wireless communication system to which an embodiment of the present application can be applied.
- the wireless communication system includes an IAB node 11 and a network device 12 .
- the network device 12 may be the parent IAB node or CU of the IAB node 11 .
- FIG. 4 is a flowchart of an information transmission method provided by an embodiment of the present application. The method may be performed by a self-backhauling IAB node, as shown in FIG. 4, including the following steps:
- Step 401 Perform information transmission according to the frequency domain availability of the DU of the IAB node
- the frequency domain availability of the DU of the IAB node is indicated by the parent IAB node of the IAB node, or configured by the central unit CU, or predefined by a protocol.
- the DU of the IAB node may also be referred to as an IAB DU.
- the MT of the IAB node may also be called the IAB MT.
- the above frequency domain availability may refer to the availability of frequency domain resources.
- the above-mentioned frequency domain availability may include at least one of a hard (hard) type, a soft (soft) type, an unavailable (NA) type, and a shared (shared) type.
- the frequency domain resources whose frequency domain availability is hard type can only be used by IAB DU; the frequency domain resources whose frequency domain availability is soft type can only be used by IAB DU when it does not affect IAB MT transmission and reception; the frequency domain availability is unavailable type
- the frequency domain resources of the DU cannot be used by the DU; the frequency domain resources whose frequency domain availability is the sharing type can be used by the IAB DU and the IAB MT at the same time.
- the above-mentioned frequency domain availability may also include only supporting TDM and supporting simultaneous transmission (Simultanesouly Transmission), wherein, supporting simultaneous transmission means supporting MT and DU to transmit information on the same time domain resources; or including multiplexing modes A, At least one of multiplexing mode B, multiplexing mode C, multiplexing mode D and only TDM is supported.
- the above multiplexing mode A may represent DU-TX&MT-TX, that is, DU is configured as DL, and MT is configured as UL;
- the above multiplexing mode B may represent DU-RX&MT-RX, that is, DU is configured as UL, and MT is configured as DL;
- the above multiplexing mode C may represent DU-TX&MT-RX, that is, DU is configured as DL, and MT is configured as DL;
- the above multiplexing mode D may represent DU-RX&MT-TX, that is, DU is configured as UL, and MT is configured as UL.
- the frequency domain availability of the DU of the above-mentioned IAB node can be indicated by the parent IAB node of the IAB node, for example, the above-mentioned parent IAB node can be controlled by DCI, Media Access Control (Media Access Control, MAC) control unit (Control, Element, CE) (that is, MAC CE) or RRC, etc. indicate the frequency domain availability of the DU of the IAB node; or the frequency domain availability of the DU of the IAB node can be indicated by the CU, for example, the CU can control packets through F1-C, backhaul adaptive protocol
- the data unit (Backhaul Adaptation Protocol control Packet Data Unit, BAP control PDU) etc. indicates the frequency domain availability of the DU of the above IAB node; or the frequency domain availability of the DU of the above IAB node may be predefined by the protocol.
- the frequency domain availability of DUs of the above-mentioned IAB node can be configured explicitly, for example, the frequency domain availability indication of DUs is sent to the IAB node through signaling such as RRC, F1-C, DCI, or MAC CE; Implicitly configured, for example, it is stipulated that the frequency domain availability of the frequency domain resources of the IAB DU in the case where the frequency domain resources of the IAB MT overlap with the frequency domain resources of the IAB DU is soft type, or the frequency domain of the overlapping part of the frequency domain resources. Domain availability is of type soft.
- information transmission is performed according to the frequency domain availability of the distribution unit DU of the IAB node; wherein, the frequency domain availability of the DU of the IAB node is indicated by the parent IAB node of the IAB node, or by Central unit CU configuration, or predefined by the protocol.
- the frequency domain availability of DUs is indicated by the parent IAB node of the IAB node, or by Central unit CU configuration, or predefined by the protocol.
- the method may also include:
- a first indication is received, where the first indication is used to indicate at least one of the following:
- the above frequency domain availability combination may include the availability of multiple frequency domain resources.
- the above frequency domain availability combination may include the availability of some or all of the soft type frequency domain resources; or may include some or all of the frequency domain resources.
- the above frequency domain availability combination may include the availability of UL frequency domain resources, the availability of DL frequency domain resources, and the availability of flexible frequency domain resources; or the above frequency domain availability combination may include the availability of soft type frequency domain resources and the availability of hard type frequency domain resources.
- Availability of frequency domain resources; or the above combination of frequency domain availability may include availability of UL frequency domain resources in soft type frequency domain resources, availability of DL frequency domain resources in soft type frequency domain resources and soft type frequency domain resources availability of elastic frequency domain resources, etc.
- the IAB node can search based on the above index of the frequency domain availability combination and the mapping relationship between the index of the frequency domain availability combination and the frequency domain availability combination. to the corresponding frequency domain availability combination.
- the frequency domain availability of the IAB DU and the time domain availability of the IAB DU can be indicated respectively, that is, the above first indication can only be used to indicate the frequency domain availability of the IAB DU; the frequency domain availability of the IAB DU and the time domain availability of the IAB DU can be indicated.
- the domain availability may also be indicated jointly, that is, the above-mentioned first indication may be used to indicate the frequency domain availability and the time domain availability.
- the parent IAB node or CU of the IAB node may send the first indication to the IAB node, so that the IAB node may determine the frequency domain availability of the IAB DU based on the first indication, and perform the frequency domain availability based on the frequency domain availability of the IAB DU. information transmission, thereby reducing interference between IAB nodes or within IAB nodes.
- the parent IAB node or CU of the IAB node displays the frequency domain availability of the indicated IAB DU to the IAB node through the first indication, not only the efficiency of determining the frequency domain availability of the IAB DU can be improved, but also the frequency domain availability configuration of the IAB DU can be improved. flexibility.
- the first indication is further used to indicate the time domain availability of the DU of the IAB node.
- the above-mentioned joint indication of the frequency domain availability of the IAB DU and the time domain availability of the IAB DU can be used to indicate the frequency domain availability and time domain availability of the IAB DU, which can save configuration signaling.
- the first indication is carried in downlink control information DCI or medium access control control unit MAC CE or radio resource control RRC or F1-C signaling or backhaul adaptive protocol control packet data unit.
- the first indication may be carried in DCI or MAC CE or RRC; when the CU indicates the DU to the IAB node
- the above-mentioned first indication may be carried in F1-C signaling or BAP control PDU.
- the above DCI may only be used to carry the frequency domain availability indication of DU, that is, the above-mentioned first indication; it may also carry both the frequency domain availability indication of DU and the frequency domain availability indication of DU. Time domain availability indication.
- the above-mentioned DCI may be DCI format 2_5 or downlink control information (Downlink Control Information, DCI) format 2_0 (format 2_0) (that is, DCI format 2_0), or may be a newly defined format of DCI, for example, a defined special DCI for frequency domain availability indication of DU.
- DCI Downlink Control Information
- the above-mentioned DCI may be a DCI scrambled by a specific Radio Network Temporary Identifier (RNTI); or a DCI obtained in a specific search space; or obtained in a specific control resource set DCI.
- RNTI Radio Network Temporary Identifier
- the position and/or size of the first indication in the DCI is configured by RRC.
- the position of the first indication in the DCI may include at least one of a start position of the first indication in the DCI, an end position of the first indication in the DCI, and a position range of the first indication in the DCI.
- the parent IAB node of the IAB node can configure the position and/or size of the first indication in the DCI to the IAB node through RRC, so that the IAB node can be based on the position and/or size of the first indication in the DCI Or the size is quickly obtained from the DCI to the first indication.
- This embodiment of the present application can improve the flexibility of the configuration of the first indication by configuring the position and/or size of the first indication in the DCI through the RRC.
- the location of the first indication in the DCI is determined according to the location of the time domain availability indication of the DU of the IAB node in the DCI.
- the location of the frequency domain availability indication of the IAB DU in the DCI is related to the location of the time domain availability indication of the IAB DU in the DCI, so that the IAB node can be based on the time domain availability indication of the IAB DU in the DCI.
- the location in the IAB DU determines the location of the frequency domain availability indication (that is, the first indication) of the IAB DU in the DCI, which can save the indication signaling overhead of the frequency domain availability indication location.
- the position of the first indication in the DCI is one of the following:
- the position of the last time domain availability indication in the DCI is offset by a first offset value in the DCI, wherein the first offset value is the offset value indicated by the frequency domain availability;
- the time domain availability indication of the DU of the IAB node is offset by a second offset value in the DCI, wherein the second offset value is a size of the time domain availability indication;
- the time domain availability of the DU of the IAB node indicates the location in the DCI.
- the value of the first offset value may be indicated by the parent IAB node or the CU, or predefined by a protocol, or determined according to the size of the time domain availability indication.
- the position of the last time domain availability indication in the DCI (positionInDCI-AIlast) in the DCI may be the start position or the end position of the last time domain availability indication in the DCI, or the like.
- the position of the time domain availability indication of the DU of the IAB node in the DCI may be the start position or the end position of the time domain availability indication of the IAB DU in the DCI, or the like.
- the position of the frequency domain availability indication (ie the first indication) of the IAB DU in the DCI may be the position offset of the last time domain availability indication in the DCI in the DCI by a first offset. shift value.
- the position or starting position of the frequency domain availability indication in the DCI that is, the frequency domain availability indication field position
- positionInDCI-AIlast is the last one in the DCI
- the time domain availability indicates the position or starting position in the DCI
- the position indicator size is the size of the time domain availability indication.
- the location of the frequency domain availability indication (ie, the first indication) of the IAB DU in the DCI may be offset by a second offset value for the location of the corresponding time domain availability indication in the DCI.
- positionInDCI-AI is the time of the IAB DU
- the domain availability indicates the position or starting position in the DCI
- the position indicator size is the size of the time domain availability indication.
- the location of the frequency domain availability indication (ie, the first indication) of the IAB DU in the DCI may be the location of the corresponding time domain availability indication in the DCI.
- the position or starting position of the frequency domain availability indication in the DCI that is, the frequency domain availability indication field position
- positionInDCI-AI is the time domain availability indication of the IAB DU at The position or starting position in the DCI.
- This embodiment can multiplex positionInDCI-AI without defining a new field position indication.
- the parameter positionInDCI-AI carried in the RRC may indicate the starting position of the time domain availability indication of the first cell in the DCI, and the frequency domain availability indication of the first cell is located in the DCI after the time domain indication; or , the parameter positionInDCI-AI carried in the RRC represents the availability indication in the time-frequency domain of the first cell, and the size of the availability indication in the time-frequency domain is max ⁇ ceil(log2(maxAIindex+1)), 1 ⁇ bits, where maxAIindex represents the maximum AI index.
- the method further includes:
- the frequency domain availability of the DU of the IAB node is determined according to the index of the frequency domain availability combination indicated by the first indication and a first mapping relationship, where the first mapping relationship is the frequency domain availability combination index and frequency domain Mapping of availability combinations.
- the IAB node may, according to the index of the frequency domain availability combination indicated by the first indication, and the index of the frequency domain availability combination and the frequency domain availability
- the combined mapping relationship determines the frequency domain availability of the IAB DU, wherein the above-mentioned index of the frequency domain availability combination and the mapping relationship of the frequency domain availability combination can be configured by the CU or the parent IAB node through RRC, or can be predefined by the protocol.
- the parent IAB node can configure the frequency domain availability combination list through RRC, that is, the mapping relationship between the index of the frequency domain availability combination and the frequency domain availability combination, and the parent IAB node indicates the frequency domain availability combination index to the IAB node through DCI.
- the IAB node searches for the frequency domain availability combination in the frequency domain availability combination list according to the index of the frequency domain availability combination indicated by the DCI, so as to determine the frequency domain availability.
- the indication granularity of the availability of the DU in the frequency domain of the IAB node is determined according to at least one of the following:
- the frequency range in which the carrier of the DU of the IAB node is located is located.
- the parent IAB node when the indication granularity of the frequency domain availability of the DU of the IAB node is indicated by the parent IAB node, the parent IAB node may indicate the frequency domain availability indication granularity to the IAB node through RRC, MAC CE or DCI,
- the CU may indicate the frequency domain availability indication granularity to the IAB node through F1-C.
- the configurable bandwidth range of the MT of the IAB node may also be referred to as a bandwidth part (Bandwidth Part, BWP) range of the IAB MT.
- BWP bandwidth part
- the above-mentioned indication granularity of determining the frequency domain availability of the IAB DU according to the available frequency domain resources of the IAB DU or the actually scheduled frequency domain resources may be the size and/or frequency of the available frequency domain resources of the IAB DU or the actually scheduled frequency domain resources.
- the size of the domain availability indication signaling determines the indication granularity of the frequency domain availability of the IAB DU. For example, the larger the available frequency domain resources of the IAB DU or the actually scheduled frequency domain resources, the larger the indication signaling size is, then the frequency domain of the IAB DU The greater the granularity of the indication of availability.
- the lower edge of the self-carrier or the upper edge of the BWP corresponds to 0, 1/4, 1/2, 3/4, and 1, that is, the frequency domain resources of the IAB DU are divided into 4 parts for indication.
- the indication granularity of the frequency domain availability of the IAB DU can be configured for different frequency ranges respectively.
- the frequency range at determines its corresponding indication granularity of frequency domain availability. For example, if the IAB aggregated cells include the FR1 cell and the FR2 cell, the corresponding frequency domain availability indication granularity may be configured for the FR1 cell and the FR2 cell, respectively.
- each frequency range is configured with a corresponding indication granularity of frequency domain availability.
- the indication granularity of the frequency domain availability of the DU of the IAB node is one of the following:
- N Physical Resource Block
- Every M resource block group (Resource Block Group, RBG), M is a positive integer;
- K is a positive integer
- L is a positive integer.
- the value of at least one of the foregoing N, M, K, and L may be indicated by the parent IAB node or indicated by the CU, or may be predefined by a protocol.
- the parent IAB node may indicate the value of at least one of the above N, M, K and L through MAC CE or DCI.
- the foregoing CU may indicate the value of at least one of the foregoing N, M, K, and L through F1-C.
- the above RBG may be obtained by grouping resource blocks (Resource Block, RB).
- the RBG may be determined according to the bandwidth, that is, the RB grouping is related to the bandwidth.
- the corresponding relationship between the resource block size and the bandwidth can be predefined or preconfigured, so that the CU or parent IAB node can obtain the size of the indication information according to the bandwidth and the corresponding relationship between the indication granularity/resource group size and the bandwidth; thus, the IAB DU can obtain the size of the indication information according to the indication
- the information and the corresponding relationship between the indication granularity/resource group size and the bandwidth can obtain the frequency domain resource range, and then the frequency domain availability can be determined according to the frequency domain resource range and the indication information.
- RBG may have the same concept as the RBG defined in Rel-16, or may be a newly defined resource block group, which is not limited in this embodiment of the present application.
- the subband is determined according to an interference-related parameter or a channel state information (Channel State Information, CSI) measurement parameter.
- CSI Channel State Information
- the above-mentioned subband may be related to interference-related parameters, or related to CSI measurement parameters.
- the above-mentioned interference-related parameters may include, but are not limited to, at least one of an interference level, an interference threshold, and the like.
- the above-mentioned CSI measurement parameters may include, but are not limited to, at least one of reference signals for CSI measurement, measurement thresholds, measurement time-frequency resources, and the like.
- the subcarrier space (Subcarrier Space, SCS) used to determine the availability in the frequency domain may include at least one of the following:
- the SCS configured in the uplink resource configuration and/or the downlink resource configuration of the DU of the IAB node
- the SCS of the physical downlink control channel Physical Downlink Shared Channel, PDCCH
- the synchronization signal block Synchronous Signal Block, SSB
- PDCCH Physical Downlink Shared Channel
- SSB Synchronous Signal Block
- the SCS corresponding to the frequency range of the aggregated cells of the IAB node.
- the above-mentioned parent IAB node may indicate the SCS for determining the availability of the frequency domain to the IAB node through RRC, MAC CE or DCI.
- the CU may indicate the SCS used to determine the frequency domain availability through the F1-C or backhaul adaptive protocol control packet data unit.
- the SCS indicated by the above F1-C, RRC, MAC CE, DCI or BAP control PDU may be directly indicated by the F1-C, RRC, MAC CE, DCI or the return adaptive protocol control packet data unit
- the SCS used to determine the availability of the frequency domain can also be the SCS corresponding to the parameters indicated by the F1-C, RRC, MAC CE, DCI or backhaul adaptive protocol control packet data unit, for example, the SSB of the DU of the parent IAB node. SCS of SCS or PDCCH.
- the above-mentioned time-domain availability combinations may be the above-mentioned availabilityCombinations.
- the above-mentioned uplink resource configuration and/or downlink resource configuration may be the above-mentioned IAB-DU-Resource-Configuration-TDD-Config.
- the corresponding SCSs may be configured for the aggregated cells of different frequency ranges, for example, the FR1 cells and the FR2 cells are respectively configured or predefined corresponding SCSs SCS.
- the cell of FR1 and the cell of FR2 have PCell or Primary Secondary Cell (PSCell), refer to the SSB of PCell or PSCell or the SCS of PDCCH, otherwise, refer to the designated cell (such as the cell with the lowest frequency) SCS of SSB or PDCCH.
- PSCell Primary Secondary Cell
- the designated cell such as the cell with the lowest frequency SCS of SSB or PDCCH.
- there may be more division methods for example, below 6 GHz, 6 to 30 GHz, and 30 to 100 GHz, and cells in each frequency range are respectively configured with corresponding SCSs.
- the SCS used for determining the availability in the frequency domain is one of the following:
- the SCS of the primary cell synchronization signal block in the at least two SCSs is a SCS of the primary cell synchronization signal block.
- the SCS configuration used to determine the frequency domain availability may be the largest SCS among the above different SCS configurations Configuration or minimal SCS configuration or SCS configuration for PCell SSB.
- the SCS configuration used to determine the frequency domain availability may be the largest SCS configuration among the above-mentioned multiple SCS configurations Either the minimal SCS configuration or the SCS configuration of the PCell SSB.
- the SCS used to determine the availability in the frequency domain is one of the following:
- the PDCCH of the reference cell of the secondary cell group or the SCS of the SSB is the PDCCH of the reference cell of the secondary cell group or the SCS of the SSB.
- the above is used to determine
- the SCS of the frequency domain availability may be the SCS of the PCell or PSCell, or the largest or smallest SCS, or the SCS of the PDCCH or SSB of the PCell of the MCG, or the SCS of the PDCCH or SSB of the reference cell of the MCG, or The PDCCH of the reference cell of the SCG or the SCS of the SSB.
- the first indication is determined according to at least one of the following:
- the duplex mode of the DU and MT of the IAB node is the duplex mode of the DU and MT of the IAB node.
- the frequency domain availability of the above-mentioned IAB DU may be related to the above-mentioned time-domain resource configuration, wherein the above-mentioned time-domain resource configuration may include the availability configuration of time-domain resources.
- the parent IAB node or CU may perform availability configuration of frequency domain resources according to the time domain resource configuration, that is, the configuration of the content indicated by the first indication.
- the frequency domain availability is configured for the resource whose time domain availability is configured as a soft type, that is, the above-mentioned first indication is used to indicate the frequency domain availability of the resource whose time domain availability is configured as a soft type, or the first indication is applied to the time domain availability A resource configured as a soft type.
- the frequency domain availability of the above-mentioned IAB DU may be related to the frequency domain resource configuration.
- the parent IAB node or CU may further indicate the availability of the frequency domain resources of the DUs of the IAB node when the availability of the frequency domain resources of the DUs of the IAB node is configured.
- the CU can send a third indication through F1-C to configure the availability of frequency domain resources of the DU of the IAB node, and the parent IAB node can send the first indication through DCI or MAC CE to further indicate that the available resources of the DU of the IAB node are configured in the available resources Frequency Domain Availability The availability of frequency domain resources.
- the parent IAB node may further indicate the frequency domain availability for the resource whose frequency domain availability is configured as a soft type, that is, the above-mentioned first indication is used to indicate the frequency domain availability of the resource whose frequency domain availability is configured as a soft type, or the first The indication applies to resources whose frequency domain availability is configured as a soft type.
- the availability types of the frequency domain resources of the DU may include at least one of a hard (hard) type, a soft (soft) type, an NA type, and a shared (Shared) type, and the frequency domain resources of the DU may be configured with different availability types Type, for frequency domain resources whose frequency domain availability is configured as soft type, the parent IAB node or CU may further indicate its availability.
- the frequency domain availability of the above-mentioned IAB DU may be related to a resource multiplexing mode, wherein the above-mentioned resource multiplexing mode may include at least one of TDM, FDM, and SDM.
- the parent IAB node or the CU may configure the availability of frequency domain resources according to the resource multiplexing mode, that is, the configuration of the content indicated by the first indication.
- the frequency domain availability is configured for resources whose resource multiplexing mode is TDM, that is, the above-mentioned first indication is used to indicate the frequency domain availability of the resources for which the DU and MT are in the TDM resource multiplexing mode, or the first indication is applied to The resources for which the DU and the MT are in the resource multiplexing mode of TDM, or the time when the first indication takes effect is the time when the DU and the MT are in the resource multiplexing mode of TDM.
- the signaling carrying the first indication may carry indication information to indicate the resource multiplexing mode for which the first indication is directed.
- the frequency domain availability of the above-mentioned IAB DU may be related to the duplex mode, wherein the above-mentioned duplex mode may include the above-mentioned MT TX/DU TX, MT TX/DU RX, MT RX/DU RX, MT RX At least one of /DU TX, MT TX only (only MT TX), MT RX only (only MT RX), DU TX only (only DU TX), and DU RX only (only DU RX).
- the parent IAB node or the CU may configure the availability of frequency domain resources according to the duplex mode, that is, the configuration of the content indicated by the first indication.
- the frequency domain availability is configured for the resource whose duplex mode is DU-TX&MT-TX, that is, the above-mentioned first indication is used to indicate the frequency domain availability of the resource where the DU and MT are in the duplex mode of DU-TX&MT-TX, or It is said that the first indication is applied to the resources where the DU and the MT are in the duplex mode of DU-TX&MT-TX, or the time when the first indication takes effect is the time when the DU and the MT are in the duplex mode of DU-TX&MT-TX.
- the signaling carrying the first indication may carry indication information to indicate the duplex mode for which the first indication is directed.
- the first indication is applied to at least one of the following:
- the time domain is configured as a soft-type resource
- the time domain is configured as a hard-typed resource
- the time domain is configured as a resource of an unavailable type
- the time domain is configured as a downlink type resource
- the time domain is configured as an uplink type resource
- the time domain is configured as a resource of elastic type
- the above-mentioned first indication is applied to a resource whose time-domain configuration is a soft type, that is, the above-mentioned first indication is used to indicate the time-domain availability of a resource whose time-domain configuration is a soft type.
- the parent IAB node or CU may configure frequency domain availability for resources whose time domain is configured as a soft type.
- the above-mentioned first indication is applied to a resource whose time-domain configuration is a hard type, that is, the above-mentioned first indication is used to indicate the time-domain availability of a resource whose time-domain configuration is a hard type.
- the parent IAB node or CU may configure frequency domain availability for resources that are time domain configured as hard type.
- the above-mentioned first indication is applied to the resource whose time-domain configuration is of the unavailable type, that is, the above-mentioned first indication is used to indicate the time-domain availability of the resource whose time-domain configuration is of the unavailable type.
- the parent IAB node or CU may configure frequency domain availability for resources whose time domain configuration is of an unavailable type.
- the above-mentioned first indication is applied to resources whose time-domain configuration is DL type, that is, the above-mentioned first indication is used to indicate the time-domain availability of resources whose time-domain configuration is DL type.
- the parent IAB node or CU may configure frequency domain availability for resources whose time domain configuration is DL type.
- the above-mentioned first indication is applied to resources whose time-domain configuration is UL type, that is, the above-mentioned first indication is used to indicate the time-domain availability of resources whose time-domain configuration is UL type.
- the parent IAB node or CU may configure frequency domain availability for resources whose time domain configuration is UL type.
- the above-mentioned first indication is applied to the resource whose time-domain configuration is the elastic type, that is, the above-mentioned first indication is used to indicate the time-domain availability of the resource whose time-domain configuration is the elastic type.
- the parent IAB node or CU may configure frequency domain availability for resources whose time domain is configured as an elastic type.
- the above-mentioned first indication is applied to the resource corresponding to each time slot or each symbol, that is, the above-mentioned first indication is used to indicate the time domain availability of the resource corresponding to each time slot or each symbol.
- the parent IAB node or CU may configure frequency domain availability for each slot or each symbol.
- the first indication may be applied to resources whose time domain configuration is soft type and elastic type, that is, the first indication may be used to indicate the frequency of resources whose time domain configuration is soft type and elastic type. Domain availability.
- the effective time of the first indication is determined according to at least one of the following:
- the time domain parameter for which the first indication is instructed or configured to take effect is instructed or configured to take effect.
- the above-mentioned effective time may be understood as a time window for effective, which may include the effective start time and the effective end time.
- the time domain parameter for which the first indication of the above indication or configuration is valid may be the time domain parameter for which the first indication is valid indicated by F1-C, RRC, MAC CE or DCI.
- the above-mentioned time-domain parameters may include, but are not limited to, at least one of an effective period, a time-domain offset, a time-domain resource size, a frequency-domain resource size, and a frequency-domain resource location (including a start point and an end point).
- the time domain parameter may include at least one of the following: a valid period; a time domain offset; and a time domain resource size.
- the above-mentioned time-domain offset may represent the offset of the start time when the first indication starts to take effect with respect to the reference time.
- the above-mentioned time domain offset may be a fixed value or a variable value.
- the above-mentioned reference time may be the time of receiving the above-mentioned first indication, or a time point determined according to the time of receiving the above-mentioned first indication.
- the effective start time of the first indication may be the symbol, sub-slot or time slot.
- S symbols or sub-slots or time slots after the slot the above-mentioned S is the above-mentioned time domain offset.
- the above-mentioned time-domain resource size may include the number of time slots, the number of symbols, and the like.
- the time domain resource size for which the pre-configured frequency domain availability indication takes effect is 10 time slots
- the IAB node receives the parent IAB node indicating that the IAB DU in time slot P is of hard type
- the IAB DU is in time slot P to time slot P+
- scheduling is performed according to the frequency domain availability type, where P is a positive integer. That is, it is assumed that DUs will continuously occupy a segment of resources for transmission, so as to reduce the frequency domain availability indication performed on each time domain unit (eg, time slot), so as to save the overhead of indication signaling.
- the effective time of the first indication may also be determined according to a frequency domain parameter, and the above frequency domain parameter may include at least one of a frequency domain resource size and a frequency domain resource location, and the above frequency domain resource location may include a frequency domain resource location. The start and end position of the domain resource.
- the frequency domain resource for which the preconfigured frequency domain availability indication takes effect is 20 PRBs; the IAB node receives the parent IAB node or CU indicating that the IAB DU is of soft type in the Qth PRB, then the IAB DU is in the frequency domain resource.
- Qth PRB The resources to the Q+19th PRB are of soft type, and the IAB node performs scheduling according to the configured frequency domain availability type, where P is a positive integer.
- the method may also include:
- a second indication is received, wherein the second indication is used to indicate at least one of a size and a location of the available frequency domain of the DU of the IAB node.
- the above-mentioned parent IAB node or CU may indicate to the IAB node at least one of the size and location of the available frequency domain of the IAB DU.
- an IAB node is configured with multiple DU cells, and the parent IAB node can directly and dynamically indicate that some of the multiple DU cells are cells available for DUs.
- the parent IAB node may directly and dynamically indicate that part of the frequency domain resources in the cell are resources available to the DU.
- the parent IAB node can dynamically indicate that some of the above-mentioned semi-static available resources are the actual available resources of the DU. .
- the actual available resources of the above DU may be the intersection or union of semi-statically configured resources and dynamically indicated resources.
- the frequency domain availability of the DU of the IAB node is determined according to at least one of the following:
- the duplex mode of the DU and MT of the IAB node is the duplex mode of the DU and MT of the IAB node.
- the frequency domain availability of the DUs of the IAB node may be determined according to the frequency domain resources of the DUs of the IAB node.
- the frequency domain availability of the DU of the IAB node may be determined according to the frequency domain resources of the DU of the IAB node and the frequency domain resources of the MT of the IAB node. For example, if the frequency domain resources of the MT overlap with the frequency domain resources of the DU, the availability of the frequency domain resources of the DU is of the soft type, or the availability of the overlapping part of the frequency domain resources is of the soft type.
- the frequency domain availability of the DU of the IAB node may be determined according to the resource multiplexing mode of the DU and the MT of the IAB node, wherein the resource multiplexing mode may include TDM, FDM, SDM, etc. at least one of.
- the resource multiplexing mode may include TDM, FDM, SDM, etc. at least one of.
- different resource multiplexing modes may correspond to different frequency domain availability types, for example, FDM corresponds to soft type, TDM corresponds to NA type, SDM corresponds to hard type, and so on.
- the IAB node can determine the frequency domain availability of the corresponding DU based on the current resource multiplexing mode of the DU and the MT.
- the frequency domain availability of the DU of the IAB node may be determined according to the duplex mode of the DU and the MT of the IAB node, wherein the duplex mode may include MT TX/DU TX, MT TX/ DU RX, MT RX/DU RX, MT RX/DU TX, only MT TX (only MT TX), only MT RX (only MT RX), only DU TX (only DU TX) and only DU RX ( at least one of only DU RX).
- different duplex modes may correspond to different frequency domain availability types, for example, DU-TX&MT-TX corresponds to soft type, DU-RX&MT-RX corresponds to NA type, DU-TX&MT-RX corresponds to hard type, etc.
- the IAB node can determine the frequency domain availability of the corresponding DU based on the current duplex mode of the DU and the MT.
- the availability of the time-frequency resources of the DU of the IAB node may be determined according to the availability of the DU in the IAB node in the time domain and the frequency domain.
- the availability type of the time-frequency resource of the DU of the IAB node is the same type; if the time domain availability type of the DU of the IAB node is of the same type; If the type and frequency domain availability type are different, the availability type of the time-frequency resource of the DU of the IAB node may be the type of time domain availability of the DU of the IAB node, or the type of frequency domain availability of the IAB node.
- the time-frequency resource can be the available resource of the DU.
- the availability of the corresponding time-frequency resource is a soft type
- the availability of the corresponding time-frequency resource is a soft type
- the availability of the corresponding time-frequency resource is a soft type
- the availability of the corresponding time-frequency resource is of the soft type.
- the method may also include:
- the frequency domain resource parameters include at least one of the following: the boundary of the frequency domain resources, the range of the frequency domain resources, the size of the frequency domain resources, and the expected availability of the frequency domain resources.
- the IAB node may report frequency domain resource parameters to the parent IAB node or CU.
- the IAB node can report the frequency domain resource parameters to the parent IAB node or CU through auxiliary information (Assistant Information), MAC CE or BAP control PDU.
- the reporting manner of the frequency domain resource parameter includes one of the following: periodic reporting; event-triggered reporting; and poll-triggered reporting.
- FIG. 6 is a flowchart of another information transmission method provided by an embodiment of the present application. The method is executed by a network device, as shown in FIG. 6, and includes the following steps:
- Step 601 Indicate the frequency domain availability of the DU of the IAB node to the IAB node.
- the above-mentioned network device may be the parent IAB node of the IAB node, or may be a CU.
- the above-mentioned parent IAB node can indicate the frequency domain availability of the DU of the above-mentioned IAB node through DCI, MAC CE or RRC, etc.; or the CU can indicate the frequency domain availability of the DU of the above-mentioned IAB node through F1-C, BAP control PDU, etc.
- this embodiment is an implementation of the network device corresponding to the embodiment shown in FIG. 4 .
- the frequency domain availability of the DUs of the IAB node is indicated to the IAB node, so that the IAB node can perform information transmission based on the frequency domain availability of the DUs of the IAB node, thereby reducing the number of IAB nodes or Interference inside the IAB node.
- the indicating to the IAB node the frequency domain availability of the DU of the IAB node includes:
- the first indication is further used to indicate the time domain availability of the DU of the IAB node.
- the network device is a parent IAB node of the IAB node, and the first indication is carried in downlink control information DCI or a medium access control control unit MAC CE or radio resource control RRC.
- the parent IAB node of the IAB node may send the first indication to the IAB node through DCI or MAC CE or RRC.
- the position and/or size of the first indication in the DCI is configured by RRC.
- the location of the first indication in the DCI is determined according to the location of the time domain availability indication of the DU of the IAB node in the DCI.
- the position of the first indication in the DCI is one of the following:
- the position of the last time domain availability indication in the DCI is offset by a first offset value in the DCI, wherein the first offset value is an offset value indicated by the frequency domain availability;
- the position of the time domain availability indication of the DU of the IAB node in the DCI is offset by a second offset value, wherein the second offset value is a size of the time domain availability indication;
- the time domain availability of the DU of the IAB node indicates the location in the DCI.
- the network device is a CU
- the first indication is carried in F1-C signaling or backhauled in an adaptive protocol control packet data unit.
- the CU may send the first indication to the IAB node through F1-C signaling or BAP control PDU.
- the method may also include at least one of the following:
- the SCS used to determine the frequency domain availability is indicated to the IAB node.
- the parent IAB node of the IAB node may indicate the indication granularity of frequency domain availability to the IAB node through DCI or MAC CE or RRC, or the CU may indicate to the IAB node through F1-C signaling or BAP control PDU Indication granularity of frequency domain availability of DUs of the IAB node.
- the SCS for determining the availability of the frequency domain may be indicated to the IAB node by the parent IAB node of the IAB node through DCI or MAC CE or RRC, or the SCS for determining the availability of the frequency domain may be indicated to the IAB node by the CU through F1-C signaling or BAP control PDU Indicates the SCS used to determine the frequency domain availability.
- the indication granularity of the frequency domain availability of the DU of the IAB node is determined according to at least one of the following:
- the frequency range in which the carrier of the DU of the IAB node is located is located.
- the indication granularity of the frequency domain availability of the DU of the IAB node is one of the following:
- N is a positive integer
- M is a positive integer
- K is a positive integer
- L is a positive integer.
- the RBG is determined according to bandwidth.
- the subband is determined according to interference-related parameters or channel state information CSI measurement parameters.
- the SCS for determining the availability in the frequency domain includes one of the following:
- the SCS configured in the uplink resource configuration and/or the downlink resource configuration of the DU of the IAB node
- the SCS corresponding to the frequency range of the aggregated cells of the IAB node.
- the SCS used to determine the availability in the frequency domain is one of the following:
- the SCS of the primary cell synchronization signal block in the at least two SCSs is a SCS of the primary cell synchronization signal block.
- the SCS used to determine the availability in the frequency domain is one of the following:
- the PDCCH of the reference cell of the secondary cell group or the SCS of the SSB is the PDCCH of the reference cell of the secondary cell group or the SCS of the SSB.
- the first indication is determined according to at least one of the following:
- the resource multiplexing mode of the DU and MT of the IAB node is the resource multiplexing mode of the DU and MT of the IAB node.
- the first indication is applied to at least one of the following:
- the time domain is configured as a soft-type resource
- the time domain is configured as a hard-typed resource
- the time domain is configured as a resource of an unavailable type
- the time domain is configured as a downlink type resource
- the time domain is configured as an uplink type resource
- the time domain is configured as a resource of elastic type
- the method further includes:
- the parent IAB node of the IAB node can send the time domain parameter that the first indication takes effect to the IAB node through DCI, MAC CE or RRC, or the CU can send the time domain parameter that takes effect through F1-C signaling or BAP control PDU to the IAB node. Send the time domain parameter that the first indication takes effect to the IAB node.
- the time domain parameter includes at least one of the following: a valid period; a time domain offset; and a time domain resource size.
- the method further includes:
- a second indication is sent, wherein the second indication is used to indicate at least one of the size of the available frequency domain of the DU of the IAB node and the position of the available frequency domain.
- the parent IAB node of the IAB node may send the second indication to the IAB node through DCI or MAC CE or RRC, or the CU may send the second indication to the IAB node through F1-C signaling or BAP control PDU .
- the frequency domain availability of the DU of the IAB node is determined according to at least one of the following:
- the duplex mode of the DU and MT of the IAB node is the duplex mode of the DU and MT of the IAB node.
- the availability of the time-frequency resources of the DU of the IAB node is determined according to the availability of the DU in the IAB node in the time domain and the frequency domain.
- the availability of the corresponding time-frequency resource is a soft type
- the availability of the corresponding time-frequency resource is a soft type
- the availability of the corresponding time-frequency resource is a soft type
- the availability of the corresponding time-frequency resource is of the soft type.
- the method further includes:
- the frequency domain resource parameters include at least one of the following: the boundary of the frequency domain resources, the range of the frequency domain resources, the size of the frequency domain resources, and the expected availability of the frequency domain resources.
- the reporting manner of the frequency domain resource parameter includes one of the following: periodic reporting; event-triggered reporting; inquiry-triggered reporting.
- Example 1 Time domain availability multiplexes DCI format 2_5 signaling, and indicates separately in DCI and time domain availability, this solution is compatible with R16 UE.
- each IAB node or each cell (cell) of an IAB DU, some or all of the following information may be provided:
- IAB DU serving cell identification iabDuCellId-AI
- a frequency domain availability indicates the position in DCI format 2_5 (FreqPositionInDCI-AI);
- a set of frequency domain availability combination indications (FreqAvailabilityCombinations), wherein each frequency domain availability combination indication includes:
- Frequency domain resource availability indication (FreqResourceAvailability).
- the frequency domain resource availability combination of Soft type provided by the frequency domain resource availability indication (FreqResourceAvailability) or some or all of the frequency domain resource availability combinations are combined with the corresponding AI index field value of the DCI format 2_5 provided by the frequency domain availability combination identifier (FreqAvailabilityCombinationId). That is, according to the FreqAvailabilityCombinationId indicated in the DCI and the mapping relationship configured by FreqAvailabilityCombinations, the availability indication of the corresponding frequency domain resource can be found.
- the above frequency domain resource availability indication (FreqResourceAvailability) is used to indicate the availability of frequency domain resources.
- a frequency domain resource availability indication may be configured for some or all of the soft type frequency domain resources; or a frequency domain resource availability indication may be configured for some or all of the frequency domain resources, that is, it is not limited to the soft type frequency domain resources; or Configure frequency domain resource availability indication for frequency domain resources of each resource type (ie hard/soft/NA, etc.) respectively; or for each multiplexing mode (ie MT TX/DU TX, MT RX/DU RX, MT TX respectively) /DU RX, MT RX/DU TX, TDM) configure frequency domain resource availability indication; or configure frequency domain resource availability indication for each link direction (ie UL/DL/Flexbile) respectively; or for each time slot or A frequency domain resource availability indication is configured per symbol.
- the frequency domain resource availability indication is applied to the soft type frequency domain resources, that is, used to indicate the usefulness of the soft type frequency domain resources, it means that the frequency domain resource availability indication in the DCI only rewrites the frequency domain Resources that are pre-configured as soft type, and resources configured as hard/NA type are not overwritten. If the above frequency domain resource availability indication is applied to some or all resources, regardless of the availability of frequency domain pre-configured frequency domain resources, the frequency domain resource availability indication in DCI can override the resource availability of Hard/NA type.
- IAB-DU assumes that the frequency domain availability combination indication (FreqAvailabilityCombinations) or frequency domain availability indication adopts the same SCS configuration as the time domain availability combination indication (availabilityCombinations); or adopts the IAB-DU uplink and downlink configuration (IAB-DU-Resource-Configuration-TDD -Config) provides the SCS configuration; or when there are multiple IAB-DU uplink and downlink configurations that provide different SCS configurations (may correspond to the case where the MT is in a dual-connection state), use the largest or smallest SCS configuration; or, When there are multiple time-domain availability Combinations (possibly corresponding to the case where the MT is in a dual-connection state) and corresponding to different SCS configurations, the largest or the smallest SCS may be used.
- FreqAvailabilityCombinations frequency domain availability combination indication
- availabilityCombinations adopts the same SCS configuration as the time domain availability combination indication (availabilityCombinations)
- IAB-DU uplink and downlink configuration IAB-DU
- the location of the frequency domain availability indication in the DCI may be one of the following three ways.
- the position of the frequency domain availability indication in the DCI may be after the position of the last time domain availability indication in the DCI, as shown in FIG. 5a.
- the location of the frequency domain availability indication in the DCI may be after the location of the corresponding time domain availability indication in the DCI, as shown in FIG. 5b.
- the location of the frequency domain availability indication in the DCI may be the location of the corresponding time domain availability indication in the DCI, as shown in FIG. 5c .
- the above-mentioned third mode may only configure one positionInDCI indication in the RRC configuration.
- the frequency domain availability indication carried in DCI Format 2_5 may be FreqAvailabilityCombinationId-r17.
- the corresponding RRC signaling configuration can be one of the following schemes:
- the frequency domain availability indication and the time domain availability indication may use the same information element (Information Element, IE).
- some fields in the IE may be shared by the time domain availability indication and the frequency domain availability indication, such as availabilityCombinationsPerCellIndex.
- the existing field AvailabilityCombinationsPerCellIndex is a common index of available resource sets in time domain and frequency domain.
- an optional implementation code of the RRC configuration can be as follows:
- DCI Downlink Control Information
- maxAI-DCI-PayloadSize-R17 represents the maximum DCI size defined in the protocol version 17 (Release 17, Rel-17) to indicate availability, and maxAI-DCI-PayloadSize-R16 represents the protocol defined in Rel-16 for Indicates the size of the maximum DCI for availability.
- Option 2 Use an independent RRC IE to indicate frequency domain availability.
- an optional implementation code of the RRC configuration can be as follows:
- Example 2 The first-level frequency-domain availability indication is embedded in the time-domain availability indication.
- IAB DU serving cell identification iabDuCellId-AI
- a time domain availability indicates the position in DCI format 2_5 (positionInDCI-AI);
- a frequency domain availability indicates the position in DCI format 2_5 (FreqPositionInDCI-AI);
- a set of time domain availability combinations (AvailabilityCombinations,) where each time domain availability combination includes:
- ResourceAvailability used to indicate the availability of soft type symbol resources in one or more time slots
- the indication that is, the frequency domain resource indication, is an indication embedded under each time domain entry.
- the RRC configuration parameters, SCS configuration, and DCI format related to frequency domain availability can refer to Example 1.
- available frequency domain resource FreqResourceAvailability
- available frequency domain combination identifier FreqAvailabilityCombinateionId
- Example 3 RRC indicates frequency domain indication granularity, and DCI indicates frequency domain availability.
- the CU or the parent IAB node may configure the frequency domain availability indication granularity for the IAB MT or IAB DU through RRC, for example, frequency domain availability indication granularity (FreqGranularity).
- a DCI for indicating frequency domain availability is defined, for example, DCI format 2-7, through which the frequency domain availability of IAB DUs is indicated.
- the IAB node may determine the length of the frequency domain availability indication according to the resource bandwidth of the MT or DU.
- the length of the frequency domain availability indication may be one of the following:
- the length of the indication field in the DCI can be ceil (BW/FreqGranularity), where ceil means rounding up, BW means the resource bandwidth of MT or DU, and FreqGranularity means the frequency domain availability indication granularity.
- each frequency domain unit corresponds to 1 bit (bit), indicating whether it is available or unavailable; or indicating the resources of the soft type as the hard type or the NA type.
- the length of the indication field in the DCI can be 2*ceil(BW/FreqGranularity), where ceil means rounding up, BW means the resource bandwidth of MT or DU, and FreqGranularity means the frequency domain availability indication granularity.
- each frequency domain unit corresponds to 2 bits, and the frequency domain unit resource can be indicated as Soft type, Hard type, or NA type.
- the length of the indication field in the DCI can be ceil(log2(BW/FreqGranularity))+1, where ceil means rounding up, BW means the resource bandwidth of the MT or DU, and FreqGranularity means the frequency domain availability indication granularity.
- ceil means rounding up
- BW means the resource bandwidth of the MT or DU
- FreqGranularity means the frequency domain availability indication granularity.
- the highest or lowest 1 bit indicates available or unavailable, or indicates the Hard type or NA type; ceil(log2(BW/FreqGranularity)) identifies which frequency domain resources are the indicated attributes.
- the length of the indication field in the DCI is 2*ceil(log2(BW/FreqGranularity))+2, where ceil means rounding up, BW means the resource bandwidth of MT or DU, and FreqGranularity means the frequency domain availability indication granularity .
- ceil means rounding up
- BW means the resource bandwidth of MT or DU
- FreqGranularity means the frequency domain availability indication granularity .
- the highest or lowest 1 bit indicates Hard type or NA type; ceil(log2(BW/FreqGranularity)) identifies which frequency domain resources are the indicated attributes.
- the second-highest bit or the second-lowest bit or the 2nd bit+ceil(log2(BW/FreqGranularity)) indicates the Hard type or NA type, and ceil(log2(BW/FreqGranularity)) identifies which frequency domain resources are the indicated properties.
- the reference SCS used to determine the availability in the frequency domain may be a parameter configured by the RRC.
- the time domain availability indication in DCI format 2_5 first find the corresponding time domain indication number (Entry), then under the time domain indication number, and then according to the frequency domain availability indication, find the corresponding frequency domain. Domain availability combination. That is, the frequency domain resource indication is an indication embedded under each time domain indication number.
- Example 4 Extending the scope of the availability indication domain.
- the indication range of resourceAvailability-r16 is extended.
- RRC configuration An optional implementation code of the RRC configuration can be as follows:
- the value range of resourceAvailability-r17 is 0-N, which indicates the availability indication of the time-frequency domain resources of the IAB.
- N is a value greater than or equal to 8.
- the value range of resourceAvailability-r16 is 0-7, which indicates the availability of the time domain UL/DL/Flexible symbol.
- the time domain availability indication in DCI format 2_5 first find the corresponding time domain indication number (Entry), then under the time domain indication number, and then according to the frequency domain availability indication, find the corresponding frequency domain. Domain availability combination. That is, the frequency domain resource indication is an indication embedded under each time domain indication number.
- the CU configures frequency domain availability or frequency domain resource attributes for the DU through F1-C signaling.
- the configuration parameters of F1-C signaling can be as follows:
- Scenario 1 Display and configure frequency domain availability, and configure with N PRBs as the indication granularity.
- maxnoofFrequencyResource represents the number of indicated frequency domain resources. For example, if 10 PRBs are used as the indication granularity for indication, and the maximum bandwidth is 275 PRBs, 28 frequency domain indication marks are required.
- Scenario 2 Display configuration frequency domain availability.
- RB1, RB2, RB3, RB4... represent the indication granularity of the frequency domain availability indication.
- maxnoofFrequencyResource represents the number of indicated frequency domain resources. For example, if 10 PRBs are used as the indication granularity for indication, and the maximum bandwidth is 275 PRBs, 28 frequency domain indication marks are required.
- Scenario 3 Configure the frequency domain availability according to the resource multiplexing mode, and configure it in the multiplexing info IE.
- Scenario 4 Configure the frequency domain availability according to the resource multiplexing mode, and configure it in the multiplexing info IE.
- SIMUTRANSMISSION indicates that the simultaneous scheduling of MT and DU is supported.
- Scenario 5 Configure in the gNB-DU Cell Resource Configuration IE, and configure the UL/DL/Flexible symbol of the time domain resource as the indication granularity.
- FIG. 7 is a structural diagram of an information transmission apparatus provided by an embodiment of the present application. As shown in FIG. 7, the information transmission apparatus 700 includes:
- a transmission module 701 configured to transmit information according to the frequency domain availability of the distribution unit DU of the IAB node
- the frequency domain availability of the DU of the IAB node is indicated by the parent IAB node of the IAB node, or configured by the central unit CU, or predefined by a protocol.
- the device further includes:
- a first receiving module configured to receive a first indication, where the first indication is used to indicate at least one of the following:
- the first indication is further used to indicate the time domain availability of the DU of the IAB node.
- the first indication is carried in downlink control information DCI or medium access control control unit MAC CE or radio resource control RRC or F1-C signaling or backhaul adaptive protocol control packet data unit.
- the position and/or size of the first indication in the DCI is configured by RRC.
- the location of the first indication in the DCI is determined according to the location of the time domain availability indication of the DU of the IAB node in the DCI.
- the position of the first indication in the DCI is one of the following:
- the position of the last time domain availability indication in the DCI is offset by a first offset value in the DCI, wherein the first offset value is the offset value indicated by the frequency domain availability;
- the time domain availability indication of the DU of the IAB node is offset by a second offset value in the DCI, wherein the second offset value is a size of the time domain availability indication;
- the time domain availability of the DU of the IAB node indicates the location in the DCI.
- the device further includes:
- a determining module configured to determine the frequency domain availability of the DU of the IAB node according to the index of the frequency domain availability combination indicated by the first indication and the first mapping relationship, wherein the first mapping relationship is the frequency domain availability combination The mapping relationship between the index and the frequency domain availability combination.
- the indication granularity of the frequency domain availability of the DU of the IAB node is determined according to at least one of the following:
- the frequency range in which the carrier of the DU of the IAB node is located is located.
- the indication granularity of the frequency domain availability of the DU of the IAB node is one of the following:
- N is a positive integer
- M is a positive integer
- K is a positive integer
- L is a positive integer.
- the RBG is determined according to bandwidth.
- the subband is determined according to interference-related parameters or channel state information CSI measurement parameters.
- the subcarrier spacing SCS used to determine the frequency domain availability includes at least one of the following:
- the SCS configured in the uplink resource configuration and/or the downlink resource configuration of the DU of the IAB node
- the SCS corresponding to the frequency range of the aggregated cells of the IAB node.
- the SCS used to determine the availability in the frequency domain is one of the following:
- the SCS of the primary cell synchronization signal block in the at least two SCSs is a SCS of the primary cell synchronization signal block.
- the SCS used to determine the availability in the frequency domain is one of the following:
- the PDCCH of the reference cell of the secondary cell group or the SCS of the SSB is the PDCCH of the reference cell of the secondary cell group or the SCS of the SSB.
- the first indication is determined according to at least one of the following:
- the duplex mode of the DU and MT of the IAB node is the duplex mode of the DU and MT of the IAB node.
- the first indication is applied to at least one of the following:
- the time domain is configured as a soft-type resource
- the time domain is configured as a hard-typed resource
- the time domain is configured as a resource of an unavailable type
- the time domain is configured as a downlink type resource
- the time domain is configured as an uplink type resource
- the time domain is configured as a resource of elastic type
- the effective time of the first indication is determined according to at least one of the following:
- the time domain parameter for which the first indication is instructed or configured to take effect is instructed or configured to take effect.
- the time domain parameter includes at least one of the following: a valid period; a time domain offset; and a time domain resource size.
- the device further includes:
- the second receiving module is configured to receive a second indication, wherein the second indication is used to indicate at least one of the size and the position of the available frequency domain of the DU of the IAB node.
- the frequency domain availability of the DU of the IAB node is determined according to at least one of the following:
- the duplex mode of the DU and MT of the IAB node is the duplex mode of the DU and MT of the IAB node.
- the availability of the time-frequency resources of the DU of the IAB node is determined according to the availability of the DU in the IAB node in the time domain and the frequency domain.
- the availability of the corresponding time-frequency resource is a soft type
- the availability of the corresponding time-frequency resource is a soft type
- the availability of the corresponding time-frequency resource is a soft type
- the availability of the corresponding time-frequency resource is of the soft type.
- the device further includes:
- the reporting module is used to report the frequency domain resource parameters
- the frequency domain resource parameters include at least one of the following: the boundary of the frequency domain resources, the range of the frequency domain resources, the size of the frequency domain resources, and the expected availability of the frequency domain resources.
- the reporting manner of the frequency domain resource parameter includes one of the following: periodic reporting; event-triggered reporting; inquiry-triggered reporting.
- the information transmission apparatus provided in the embodiment of the present application can implement each process in the method embodiment of FIG. 4 , and in order to avoid repetition, details are not repeated here.
- the information transmission device in this embodiment of the present application may be a device, or may be a component, an integrated circuit, or a chip in an IAB node.
- FIG. 8 is a structural diagram of another information transmission apparatus provided by an embodiment of the present application. As shown in FIG. 8, the information transmission apparatus 800 includes:
- the first indicating module 801 is configured to indicate the frequency domain availability of the DU of the IAB node to the IAB node.
- the first indication module is specifically configured to:
- the first indication is further used to indicate the time domain availability of the DU of the IAB node.
- the first indication is carried in downlink control information DCI or medium access control control unit MAC CE or radio resource control RRC.
- the position and/or size of the first indication in the DCI is configured by RRC.
- the location of the first indication in the DCI is determined according to the location of the time domain availability indication of the DU of the IAB node in the DCI.
- the position of the first indication in the DCI is one of the following:
- the position of the last time domain availability indication in the DCI is offset by a first offset value in the DCI, where I is the frequency domain availability indication offset value;
- the time domain availability indication of the DU of the IAB node is offset by a second offset value in the DCI, where J is the size of the time domain availability indication;
- the time domain availability of the DU of the IAB node indicates the location in the DCI.
- the first indication is carried in F1-C signaling or a backhaul adaptive protocol control packet data unit.
- the device further includes at least one of the following:
- a second indication module configured to indicate the indication granularity of the frequency domain availability to the IAB node
- the third indicating module is configured to indicate to the IAB node the SCS for determining the availability of the frequency domain.
- the indication granularity of the frequency domain availability of the DU of the IAB node is determined according to at least one of the following:
- the frequency range in which the carrier of the DU of the IAB node is located is located.
- the indication granularity of the frequency domain availability of the DU of the IAB node is one of the following:
- N is a positive integer
- M is a positive integer
- K is a positive integer
- L is a positive integer.
- the RBG is determined according to bandwidth.
- the subband is determined according to interference-related parameters or channel state information CSI measurement parameters.
- the subcarrier spacing SCS used to determine the frequency domain availability includes one of the following:
- the SCS configured in the uplink resource configuration and/or the downlink resource configuration of the DU of the IAB node
- the SCS corresponding to the frequency range of the aggregated cells of the IAB node.
- the SCS used to determine the frequency domain availability is one of the following:
- the SCS of the primary cell synchronization signal block in the at least two SCSs is a SCS of the primary cell synchronization signal block.
- the SCS used to determine the availability in the frequency domain is one of the following:
- the PDCCH of the reference cell of the secondary cell group or the SCS of the SSB is the PDCCH of the reference cell of the secondary cell group or the SCS of the SSB.
- the first indication is determined according to at least one of the following:
- the duplex mode of the DU and MT of the IAB node is the duplex mode of the DU and MT of the IAB node.
- the first indication is applied to at least one of the following:
- the time domain is configured as a soft-type resource
- the time domain is configured as a hard-typed resource
- the time domain is configured as a resource of an unavailable type
- the time domain is configured as a downlink type resource
- the time domain is configured as an uplink type resource
- the time domain is configured as a resource of elastic type
- the device further includes:
- a first sending module configured to send the time domain parameter for which the first indication is valid to the IAB node.
- the time domain parameters include at least one of the following: a valid period; a time domain offset; a time domain resource size.
- the device further includes:
- the second sending module is configured to send a second indication, wherein the second indication is used to indicate at least one of the size of the available frequency domain of the DU of the IAB node and the position of the available frequency domain.
- the frequency domain availability of the DU of the IAB node is determined according to at least one of the following:
- the duplex mode of the DU and MT of the IAB node is the duplex mode of the DU and MT of the IAB node.
- the availability of the time-frequency resources of the DU of the IAB node is determined according to the availability of the DU in the IAB node in the time domain and the frequency domain.
- the availability of the corresponding time-frequency resource is a soft type
- the availability of the corresponding time-frequency resource is a soft type
- the availability of the corresponding time-frequency resource is a soft type
- the availability of the corresponding time-frequency resource is of the soft type.
- the device further includes:
- a receiving module configured to receive the frequency domain resource parameter reported by the IAB node
- the frequency domain resource parameters include at least one of the following: the boundary of the frequency domain resources, the range of the frequency domain resources, the size of the frequency domain resources, and the expected availability of the frequency domain resources.
- the reporting manner of the frequency domain resource parameter includes one of the following: periodic reporting; event-triggered reporting; inquiry-triggered reporting.
- the information transmission apparatus provided in the embodiment of the present application can implement each process in the method embodiment of FIG. 6 , and to avoid repetition, details are not described here.
- the information transmission device in this embodiment of the present application may be a device, or may be a component, an integrated circuit, or a chip in a parent IAB node of a CU or an IAB node.
- FIG. 9 is a structural diagram of an IAB node provided by an embodiment of the present application.
- the IAB node 900 includes: a processor 901, a transceiver 902, a memory 903, and a bus interface, wherein:
- the transceiver 902 is configured to transmit information according to the frequency domain availability of the distribution unit DU of the IAB node; wherein, the frequency domain availability of the DU of the IAB node is indicated by the parent IAB node of the IAB node, or by the central unit CU configuration, or predefined by the protocol.
- processor 901 and transceiver 902 can implement each process implemented by the IAB node in the method embodiment of FIG. 4 , and can achieve the same technical effect.
- the transceiver 902 is configured to receive and transmit data under the control of the processor 901, and the transceiver 902 includes at least two antenna ports.
- the bus architecture may include any number of interconnected buses and bridges, in particular one or more processors represented by processor 901 and various circuits of memory represented by memory 903 linked together.
- the bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein.
- the bus interface provides the interface.
- Transceiver 902 may be a number of elements, including a transmitter and a receiver, that provide a means for communicating with various other devices over a transmission medium.
- the user interface 904 may also be an interface capable of externally connecting the required equipment, and the connected equipment includes but is not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
- the processor 901 is responsible for managing the bus architecture and general processing, and the memory 903 may store data used by the processor 901 in performing operations.
- this embodiment of the present application further provides an IAB node, including a processor 901, a memory 903, a program or instruction stored in the memory 903 and executable on the processor 901, the program or instruction being executed by the processor
- an IAB node including a processor 901, a memory 903, a program or instruction stored in the memory 903 and executable on the processor 901, the program or instruction being executed by the processor
- FIG. 10 is a structural diagram of a network device provided by an embodiment of the present application.
- the network device 1000 includes: a processor 1001, a transceiver 1002, a memory 1003, and a bus interface, wherein:
- the transceiver 1002 is configured to indicate the frequency domain availability of the DU of the IAB node to the IAB node.
- processor 1001 and transceiver 1002 can implement each process implemented by the network device in the method embodiment of FIG. 6 , and can achieve the same technical effect. To avoid repetition, details are not repeated here.
- the transceiver 1002 is configured to receive and transmit data under the control of the processor 1001, and the transceiver 1002 includes at least two antenna ports.
- the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 1001 and various circuits of memory represented by memory 1003 linked together.
- the bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein.
- the bus interface provides the interface.
- Transceiver 1002 may be a number of elements, including a transmitter and a receiver, that provide a means for communicating with various other devices over a transmission medium.
- the user interface 1004 may also be an interface capable of externally connecting the required equipment, and the connected equipment includes but is not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
- the processor 1001 is responsible for managing the bus architecture and general processing, and the memory 1003 may store data used by the processor 1001 in performing operations.
- an embodiment of the present application further provides a network device, including a processor 1001, a memory 1003, a program or instruction stored in the memory 1003 and executable on the processor 1001, the program or instruction being executed by the processor
- a network device including a processor 1001, a memory 1003, a program or instruction stored in the memory 1003 and executable on the processor 1001, the program or instruction being executed by the processor
- the embodiments of the present application further provide a readable storage medium, the readable storage medium may be non-volatile or volatile, and a program or an instruction is stored on the readable storage medium, and the program or instruction is stored in the readable storage medium.
- the processor When executed, the processor implements each process of the above-mentioned embodiments of the information transmission method on the IAB node side or the information transmission method on the network device side, and can achieve the same technical effect. To avoid repetition, details are not described here.
- the processor is the processor in the IAB node described in the foregoing embodiment.
- the readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM), a magnetic disk or an optical disk, and the like.
- An embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used for running a program or an instruction to implement the above-mentioned IAB node side.
- the chip includes a processor and a communication interface
- the communication interface is coupled to the processor
- the processor is used for running a program or an instruction to implement the above-mentioned IAB node side.
- the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip, a system-on-a-chip, or a system-on-a-chip, or the like.
- An embodiment of the present application further provides a computer program product, wherein the computer program product is stored in a non-transitory readable storage medium, and the computer program product is executed by at least one processor to implement the above-mentioned IAB node side
- the computer program product is stored in a non-transitory readable storage medium, and the computer program product is executed by at least one processor to implement the above-mentioned IAB node side
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Abstract
Description
Claims (61)
- 一种信息传输方法,由自回传IAB节点执行,所述方法包括:根据所述IAB节点的分布单元DU的频域可用性进行信息传输;其中,所述IAB节点的DU的频域可用性由所述IAB节点的父IAB节点指示,或者由中心单元CU配置,或者由协议预定义。
- 根据权利要求1所述的方法,其中,所述方法还包括:接收第一指示,所述第一指示用于指示如下至少一项:所述IAB节点的DU的频域可用性;频域可用性组合的索引和频域可用性组合的映射关系;频域可用性组合;频域可用性组合的索引。
- 根据权利要求2所述的方法,其中,所述第一指示还用于指示所述IAB节点的DU的时域可用性。
- 根据权利要求2所述的方法,其中,所述第一指示承载于下行控制信息DCI或者媒体接入控制控制单元MAC CE或者无线资源控制RRC或者F1-C信令或者回传自适应协议控制分组数据单元BAP control PDU。
- 根据权利要求4所述的方法,其中,所述第一指示在所述DCI中的位置和/或大小由RRC配置。
- 根据权利要求4所述的方法,其中,所述第一指示在所述DCI中的位置根据所述IAB节点的DU的时域可用性指示在所述DCI中的位置确定。
- 根据权利要求6所述的方法,其中,所述第一指示在所述DCI中的位置为如下一项:所述DCI中最后一个时域可用性指示在所述DCI中的位置偏移第一偏移值,其中,所述第一偏移值为频域可用性指示的偏移值;所述IAB节点的DU的时域可用性指示在所述DCI中的位置偏移第二偏移值,其中,所述第二偏移值为所述时域可用性指示的大小;所述IAB节点的DU的时域可用性指示在所述DCI中的位置。
- 根据权利要求2所述的方法,其中,所述方法还包括:根据所述第一指示所指示的频域可用性组合的索引和第一映射关系确定所述IAB节点的DU的频域可用性,其中,所述第一映射关系为频域可用性组合的索引和频域可用性组合的映射关系。
- 根据权利要求2所述的方法,其中,所述IAB节点的DU的频域可用性的指示粒度根据如下至少一项确定:F1-C或RRC或MAC CE或DCI或BAP control PDU所指示的频域可用性的指示粒度;协议预定义的频域可用性指示粒度;预定义的所述IAB节点的父IAB节点的DU的带宽范围与频域可用性的指示粒度之间的映射关系;预定义的所述IAB节点的DU的带宽范围与频域可用性的指示粒度之间的映射关系;预定义的所述IAB节点的移动终端MT的可配置带宽范围与频域可用性的指示粒度之间的映射关系;所述第一指示的大小;所述IAB节点的DU的可用频域资源;所述IAB节点的DU的实际调度的频域资源;所述IAB节点的DU的载波所处的频率范围。
- 根据权利要求2所述的方法,其中,所述IAB节点的DU的频域可用性的指示粒度为如下一项:每N个物理资源块PRB,N为正整数;每M个资源块组RBG,M为正整数;每K个载波,K为正整数;每L个子带,L为正整数。
- 根据权利要求10所述的方法,其中,所述RBG根据带宽确定。
- 根据权利要求10所述的方法,其中,所述子带根据干扰相关参数或信道状态信息CSI测量参数确定。
- 根据权利要求2所述的方法,其中,用于确定所述频域可用性的子载波间隔SCS包括如下至少之一:F1-C、RRC、MAC CE、DCI或BAP control PDU所指示的SCS;所述IAB节点的DU的时域可用性组合对应的SCS;所述IAB节点的DU的上行链路资源配置和/或下行链路资源配置中所配置的SCS;所述IAB节点的主小区的PDCCH或SSB的SCS;与所述IAB节点的聚集小区的频率范围对应的SCS。
- 根据权利要求13所述的方法,其中,在所述上行链路资源配置和/或下行链路资源配置中有至少两个SCS的情况下,用于确定所述频域可用性的SCS为如下之一:所述至少两个SCS中的最大SCS;所述至少两个SCS中的最小SCS;所述至少两个SCS中主小区同步信号块的SCS。
- 根据权利要求2所述的方法,其中,在所述IAB节点的MT和/或所述IAB节点的DU配置有至少两个SCS的情况下,用于确定所述频域可用性的SCS为如下之一:主小区的SCS;主辅小区的SCS;所述至少两个SCS中最大的SCS;所述至少两个SCS中最小的SCS;主小区组的主小区的PDCCH或SSB的SCS;主小区组的参考小区的PDCCH或SSB的SCS;辅小区组的参考小区的PDCCH或SSB的SCS。
- 根据权利要求2所述的方法,其中,所述第一指示根据如下至少一项确定:时域资源配置;频域资源配置;所述IAB节点的DU和MT的资源复用模式;所述IAB节点的DU和MT的双工方式。
- 根据权利要求16所述的方法,其中,所述第一指示应用于如下至少 一项:时域配置为软类型的资源;时域配置为硬类型的资源;时域配置为不可用类型的资源;时域配置为下行链路类型的资源;时域配置为上行链路类型的资源;时域配置为弹性类型的资源;每个时隙或者每个符号对应的资源。
- 根据权利要求2所述的方法,其中,所述第一指示的生效时间根据如下至少一项确定:预定义的所述第一指示生效的时域参数;指示或配置的所述第一指示生效的时域参数。
- 根据权利要求18所述的方法,其中,所述时域参数包括如下至少一项:生效周期;时域偏移;时域资源大小。
- 根据权利要求2所述的方法,其中,所述方法还包括:接收第二指示,其中,所述第二指示用于指示所述IAB节点的DU可用频域的大小和位置中的至少一项。
- 根据权利要求1所述的方法,其中,所述IAB节点的DU的频域可用性根据如下至少一项确定:所述IAB节点的DU的频域资源;所述IAB节点的DU和MT的资源复用模式;所述IAB节点的DU和MT的双工方式。
- 根据权利要求1所述的方法,其中,所述IAB节点的DU的时频资源的可用性根据所述IAB节点的DU的时域可用性和频域可用性确定。
- 根据权利要求22所述的方法,其中:若所述IAB节点的DU的时域可用性为软类型且频域可用性为软类型,则对应的时频资源的可用性为软类型;若所述IAB节点的DU的时域可用性为硬类型且频域可用性为软类型,则对应的时频资源的可用性为软类型;若所述IAB节点的DU的时域可用性为软类型且频域可用性为硬类型,则对应的时频资源的可用性为软类型;若所述IAB节点的DU的时域可用性为软类型且频域可用性为分享类型,则对应的时频资源的可用性为软类型。
- 根据权利要求1所述的方法,其中,所述方法还包括:上报频域资源参数;其中,所述频域资源参数包括如下至少一项:频域资源的边界,频域资源范围,频域资源大小,期望的频域资源可用性。
- 根据权利要求24所述的方法,其中,所述频域资源参数的上报方式包括如下一项:周期性上报;事件触发上报;询问触发上报。
- 一种信息传输方法,由网络设备执行,所述方法包括:向IAB节点指示所述IAB节点的DU的频域可用性。
- 根据权利要求26所述的方法,其中,所述向IAB节点指示所述IAB节点的DU的频域可用性,包括:向所述IAB节点发送第一指示,所述第一指示用于指示如下至少一项:所述IAB节点的DU的频域可用性;频域可用性组合的索引和频域可用性组合的映射关系;频域可用性组合;频域可用性组合的索引。
- 根据权利要求27所述的方法,其中,所述第一指示还用于指示所述IAB节点的DU的时域可用性。
- 根据权利要求27所述的方法,其中,所述网络设备为所述IAB节点的父IAB节点,所述第一指示承载于下行控制信息DCI或者媒体接入控制控制单元MAC CE或者无线资源控制RRC。
- 根据权利要求29所述的方法,其中,所述第一指示在所述DCI中的位置和/或大小由RRC配置。
- 根据权利要求29所述的方法,其中,所述第一指示在所述DCI中的位置根据所述IAB节点的DU的时域可用性指示在所述DCI中的位置确定。
- 根据权利要求31所述的方法,其中,所述第一指示在所述DCI中的 位置为如下一项:所述DCI中最后一个时域可用性指示在所述DCI中的位置偏移第一偏移值,其中,所述第一偏移值为频域可用性指示的偏移值;所述IAB节点的DU的时域可用性指示在所述DCI中的位置偏移第二偏移值,其中,所述第二偏移值为所述时域可用性指示的大小;所述IAB节点的DU的时域可用性指示在所述DCI中的位置。
- 根据权利要求27所述的方法,其中,所述网络设备为中心单元CU,所述第一指示承载于F1-C信令或者回传自适应协议控制分组数据单元BAP control PDU。
- 根据权利要求27所述的方法,其中,所述方法还包括如下至少一项:向所述IAB节点指示所述频域可用性的指示粒度;向所述IAB节点指示用于确定所述频域可用性的SCS。
- 根据权利要求27所述的方法,其中,所述IAB节点的DU的频域可用性的指示粒度根据如下至少一项确定:协议预定义的频域可用性的指示粒度;预定义的所述IAB节点的父IAB节点的DU的带宽范围与频域可用性的指示粒度之间的映射关系;预定义的所述IAB节点的DU的带宽范围与频域可用性的指示粒度之间的映射关系;预定义的所述IAB节点的移动终端MT的可配置带宽范围与频域可用性的指示粒度之间的映射关系;所述第一指示的大小;所述IAB节点的DU的可用频域资源;所述IAB节点的DU的实际调度的频域资源;所述IAB节点的DU的载波所处的频率范围。
- 根据权利要求27所述的方法,其中,所述IAB节点的DU的频域可用性的指示粒度为如下一项:每N个物理资源块PRB,N为正整数;每M个资源块组RBG,M为正整数;每K个载波,K为正整数;每L个子带,L为正整数。
- 根据权利要求36所述的方法,其中,所述RBG根据带宽确定。
- 根据权利要求36所述的方法,其中,所述子带根据干扰相关参数或信道状态信息CSI测量参数确定。
- 根据权利要求27所述的方法,其中,用于确定所述频域可用性的子载波间隔SCS包括如下之一:所述IAB节点的DU的时域可用性组合对应的SCS;所述IAB节点的DU的上行链路资源配置和/或下行链路资源配置中所配置的SCS;所述IAB节点的主小区的PDCCH或SSB的SCS;与所述IAB节点的聚集小区的频率范围对应的SCS。
- 根据权利要求39所述的方法,其中,在所述上行链路资源配置和/或下行链路资源配置中有至少两个SCS的情况下,用于确定所述频域可用性的SCS为如下之一:所述至少两个SCS中的最大SCS;所述至少两个SCS中的最小SCS;所述至少两个SCS中主小区同步信号块的SCS。
- 根据权利要求27所述的方法,其中,在所述IAB节点的MT和/或所述IAB节点的DU配置有至少两个SCS的情况下,用于确定所述频域可用性的SCS为如下之一:主小区的SCS;主辅小区的SCS;所述至少两个SCS中最大的SCS;所述至少两个SCS中最小的SCS;主小区组的主小区的PDCCH或SSB的SCS;主小区组的参考小区的PDCCH或SSB的SCS;辅小区组的参考小区的PDCCH或SSB的SCS。
- 根据权利要求27所述的方法,其中,所述第一指示根据如下至少一 项确定:时域资源配置;频域资源配置;所述IAB节点的DU和MT的资源复用模式;所述IAB节点的DU和MT的双工方式。
- 根据权利要求42所述的方法,其中,所述第一指示应用于如下至少一项:时域配置为软类型的资源;时域配置为硬类型的资源;时域配置为不可用类型的资源;时域配置为下行链路类型的资源;时域配置为上行链路类型的资源;时域配置为弹性类型的资源;每个时隙或者每个符号对应的资源。
- 根据权利要求27所述的方法,其中,所述方法还包括:向所述IAB节点发送所述第一指示生效的时域参数。
- 根据权利要求44所述的方法,其中,所述时域参数包括如下至少一项:生效周期;时域偏移;时域资源大小。
- 根据权利要求27所述的方法,其中,所述方法还包括:发送第二指示,其中,所述第二指示用于指示所述IAB节点的DU可用频域的大小和可用频域的位置中的至少一项。
- 根据权利要求26所述的方法,其中,所述IAB节点的DU的频域可用性根据如下至少一项确定:所述IAB节点的DU的频域资源;所述IAB节点的DU和MT的资源复用模式;所述IAB节点的DU和MT的双工方式。
- 根据权利要求26所述的方法,其中,所述IAB节点的DU的时频资源的可用性根据所述IAB节点的DU的时域可用性和频域可用性确定。
- 根据权利要求48所述的方法,其中:若所述IAB节点的DU的时域可用性为软类型且频域可用性为软类型,则对应的时频资源的可用性为软类型;若所述IAB节点的DU的时域可用性为硬类型且频域可用性为软类型,则对应的时频资源的可用性为软类型;若所述IAB节点的DU的时域可用性为软类型且频域可用性为硬类型,则对应的时频资源的可用性为软类型;若所述IAB节点的DU的时域可用性为软类型且频域可用性为分享类型,则对应的时频资源的可用性为软类型。
- 根据权利要求26所述的方法,其中,所述方法还包括:接收所述IAB节点上报的频域资源参数;其中,所述频域资源参数包括如下至少一项:频域资源的边界,频域资源范围,频域资源大小,期望的频域资源可用性。
- 根据权利要求50所述的方法,其中,所述频域资源参数的上报方式包括如下一项:周期性上报;事件触发上报;询问触发上报。
- 一种信息传输装置,所述装置包括:传输模块,用于根据IAB节点的分布单元DU的频域可用性进行信息传输;其中,所述IAB节点的DU的频域可用性由所述IAB节点的父IAB节点指示,或者由中心单元CU配置,或者由协议预定义。
- 根据权利要求52所述的装置,其中,所述装置还包括:第一接收模块,用于接收第一指示,所述第一指示用于指示如下至少一项:所述IAB节点的DU的频域可用性;频域可用性组合的索引和频域可用性组合的映射关系;频域可用性组合;频域可用性组合的索引。
- 一种信息传输装置,所述装置包括:第一指示模块,用于向IAB节点指示所述IAB节点的DU的频域可用性。
- 根据权利要求54所述的装置,其中,所述第一指示模块具体用于:向所述IAB节点发送第一指示,所述第一指示用于指示如下至少一项:所述IAB节点的DU的频域可用性;频域可用性组合的索引和频域可用性组合的映射关系;频域可用性组合;频域可用性组合的索引。
- 一种IAB节点,包括:存储器、处理器及存储在所述存储器上并可在所述处理器上运行的程序或指令,其中,所述程序或指令被所述处理器执行时实现如权利要求1至25中任一项所述的信息传输方法中的步骤。
- 一种网络设备,包括:存储器、处理器及存储在所述存储器上并可在所述处理器上运行的程序或指令,其中,所述程序或指令被所述处理器执行时实现如权利要求26至51中任一项所述的信息传输方法中的步骤。
- 一种可读存储介质,所述可读存储介质上存储程序或指令,其中,所述程序或指令被处理器执行时实现如权利要求1至25中任一项所述的信息传输方法的步骤,或者所述程序或指令被处理器执行时实现如权利要求26至51中任一项所述的信息传输方法的步骤。
- 一种芯片,包括处理器和通信接口,所述通信接口和所述处理器耦合,其中,所述处理器用于运行程序或指令,实现如权利要求1至25中任一项所述的信息传输方法的步骤,或者实现如权利要求26至51中任一项所述的信息传输方法的步骤。
- 一种计算机程序产品,所述计算机程序产品被存储在非瞬态的可读存储介质中,其中,所述计算机程序产品被至少一个处理器执行以实现如权利要求1至25中任一项所述的信息传输方法的步骤,或者所述计算机程序产品被至少一个处理器执行以实现如权利要求26至51中任一项所述的信息传输方法的步骤。
- 一种通信设备,被配置为执行如权利要求1至25中任一项所述的信息传输方法的步骤,或者被配置为执行如权利要求26至51中任一项所述的信息传输方法的步骤。
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| JP2023554474A (ja) | 2023-12-27 |
| CN114650599A (zh) | 2022-06-21 |
| EP4266782A1 (en) | 2023-10-25 |
| US20230337206A1 (en) | 2023-10-19 |
| EP4266782A4 (en) | 2024-04-24 |
| JP7798892B2 (ja) | 2026-01-14 |
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