WO2021031955A1 - 数据传输方法、装置和系统 - Google Patents
数据传输方法、装置和系统 Download PDFInfo
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- WO2021031955A1 WO2021031955A1 PCT/CN2020/108682 CN2020108682W WO2021031955A1 WO 2021031955 A1 WO2021031955 A1 WO 2021031955A1 CN 2020108682 W CN2020108682 W CN 2020108682W WO 2021031955 A1 WO2021031955 A1 WO 2021031955A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
- H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
- H04W72/1273—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of downlink data flows
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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
- H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/535—Allocation or scheduling criteria for wireless resources based on resource usage policies
Definitions
- This application relates to a wireless communication network, for example, to a data transmission method, device, and system.
- a new type of node that integrates the backhaul link and the normal access link namely the Integrated Access and Backhaul Node (IAB Node)
- IAB Node Integrated Access and Backhaul Node
- the IAB node includes two functions, namely the Distributed Unit (DU) function and the Mobile Terminal (MT) function.
- the DU function enables the IAB node to be a child node or User Equipment (UE) like a base station.
- UE User Equipment
- MT function enables IAB node to be controlled and scheduled by parent node like UE.
- the IAB node has the dual identities of the terminal and the base station, and different identities have their own transceiver timings. This makes the MT and DU of the IAB node use different symbols in the time domain, but there may also be overlap in the time domain, for example, In the case of half-duplex restriction, the MT and DU of the IAB node may need to send and receive conversion time or the transmission and reception conversion time, and these problems may cause conflicts between the resources used by the MT and DU of the IAB node.
- This application provides a data transmission method, device and system, which improve resource utilization and data transmission performance.
- An embodiment of the application provides a data transmission method, including:
- the first node receives timing related information
- the first node schedules data transmission according to timing related information, and the data transmission includes uplink data transmission or downlink data transmission.
- An embodiment of the application provides a data transmission method, including:
- the second node determines timing related information
- the second node reports timing related information to the first node.
- the timing related information is used by the first node to schedule data transmission of the second node, and the data transmission of the second node includes uplink data transmission or downlink data transmission.
- An embodiment of the application provides a data transmission method, including:
- the first node receives the guard interval
- the first node schedules data transmission according to the guard interval, and the data transmission includes uplink data transmission or downlink data transmission.
- An embodiment of the application provides a data transmission method, including:
- the second node determines the guard interval
- the second node reports a guard interval to the first node.
- the guard interval is used by the first node to schedule data transmission of the second node, and the data transmission of the second node includes uplink data transmission or downlink data transmission.
- An embodiment of the present application provides a data transmission device, which is set at a first node, and includes:
- the receiving module is set to receive timing related information
- the scheduling module is configured to schedule data transmission according to timing related information, and the data transmission of the second node includes uplink data transmission or downlink data transmission.
- An embodiment of the present application provides a data transmission device, which is set at a second node, and includes:
- Determine module set to determine timing related information
- the sending module is configured to report timing related information to the first node.
- the timing related information is used by the first node to schedule data transmission of the second node, and the data transmission of the second node includes uplink data transmission or downlink data transmission.
- An embodiment of the present application provides a data transmission device, which is set at a first node, and includes:
- Receive module set to receive protection interval
- the scheduling module is configured to schedule data transmission according to the guard interval, and the data transmission includes uplink data transmission or downlink data transmission.
- An embodiment of the present application provides a data transmission device, which is set at a second node, and includes:
- the sending module is configured to report a guard interval to the first node.
- the guard interval is used by the first node to schedule data transmission of the second node, and the data transmission of the second node includes uplink data transmission or downlink data transmission.
- An embodiment of the present application provides a data transmission system, including a first node and a second node;
- the first node includes a data transmission device described in an embodiment of the present application
- the second node includes another data transmission device described in the embodiment of the present application.
- An embodiment of the present application provides a data transmission system, including a first node and a second node;
- the first node includes another data transmission device described in the embodiment of the present application.
- the second node includes another data transmission device described in the embodiment of the present application.
- Figure 1 is a schematic diagram of the connection relationship of IAB nodes
- Fig. 2 is a schematic diagram of another connection relationship of IAB nodes
- FIG. 3 is a schematic diagram of the timing relationship between IAB nodes
- FIG. 4 is a flowchart of a data transmission method provided by an embodiment
- FIG. 5 is a flowchart of another data transmission method provided by an embodiment
- FIG. 6 is a flowchart of another data transmission method provided by an embodiment
- FIG. 7 is a flowchart of another data transmission method provided by an embodiment
- FIGS. 9a to 9l are timing diagrams of another data transmission method provided in Embodiment 3 of this application.
- FIG. 10 is a schematic structural diagram of a data transmission device provided by an embodiment
- FIG. 11 is a schematic structural diagram of another data transmission device provided by an embodiment
- FIG. 12 is a schematic structural diagram of another data transmission device provided by an embodiment
- FIG. 13 is a schematic structural diagram of another data transmission device provided by an embodiment
- FIG. 14 is a schematic structural diagram of a communication node provided by an embodiment
- FIG. 15 is a schematic structural diagram of another communication node provided by an embodiment.
- FIG. 1 is a schematic diagram of the connection relationship of the IAB node.
- the IAB node has two functions, namely DU and MT.
- the IAB node can connect with parent nodes, child nodes, and UEs.
- the link between the MT function of the IAB node and the parent node is called the parent backhaul link (Parent Backhaul Link), and is divided into the downlink parent backhaul link (Parent Backhaul Link DL) and the uplink parent backhaul link (Parent Backhaul Link UL) ).
- Parent Backhaul Link The link between the MT function of the IAB node and the parent node is called the parent backhaul link (Parent Backhaul Link), and is divided into the downlink parent backhaul link (Parent Backhaul Link DL) and the uplink parent backhaul link (Parent Backhaul Link UL) ).
- the link between the DU function of the IAB node and the child nodes of the next level is called the child backhaul link (Child Backhaul Link), and is divided into the downlink child backhaul link (Child Backhaul Link DL) and the uplink child backhaul link (Child Backhaul Link UL).
- the link between the DU function of the IAB node and the UE is called the child access link (Child Access Link), and is divided into the downlink child access link (Child Access Link DL) and the uplink child access link ( Child Access Link UL).
- Whether a backhaul link is a parent backhaul link or a child backhaul link depends on the selected reference node. For example, in Figure 1, if the child node is used as the reference node, then for the child node, the link connected to it (that is, the child backhaul link of the IAB node) is the parent backhaul link.
- MT is a unit that functions as a UE in an IAB node.
- time resources There are three types of time resources, namely Downlink (DL), Flexible (F) and Uplink (Uplink, UL). In addition, it may also include unavailable time resources. (Not Available, NA).
- DU is a unit that functions as a base station in the IAB node.
- the time resources of DU also have the following types: DL, F, UL, and NA, and the time resource types of DU are DL, F and UL are divided into hard (Hard) and soft (Soft). ), Hard resources are always available to the sub-links of IAB nodes, and the availability of soft resources needs further instructions.
- DU includes 7 types of time resources, namely: Hard DL resources, Soft DL resources, Hard F resources, Soft F resources, Hard UL resources, Soft UL resources, and NA resources.
- NA resources refer to resources that cannot be used by DUs, unless cell-specific signal transmission is configured on NA resources, such as synchronization signal block transmission.
- whether the Soft resource is available requires an explicit indication from the parent node, or the DU implicitly obtains the availability of the Soft resource according to the parent node's scheduling of the MT.
- Soft IA Soft Indicated Available
- Soft NIA Soft not Indicated Available
- the above MT and DU all refer to the MT and DU of the same IAB node.
- the symbols in the present disclosure may be orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) symbols.
- Fig. 2 is a schematic diagram of another connection relationship of IAB nodes.
- the first node, the second node, and the third node are respectively network nodes in the network.
- the first node may be a base station, a donor IAB node or an IAB node
- the second node may be a relay station or an IAB node
- the third node may be a terminal device or an IAB node.
- a node is responsible for scheduling the transmission between the node and the next-level node or terminal.
- the first node, the second node, and the third node may also be other network devices or terminal devices in the wireless communication system.
- the first link is the link from the first node to the second node for data transmission
- the second link is the link from the second node to the third node for data transmission
- the third link is the link from the second node to the first node.
- the fourth link is a link for data transmission from the third node to the second node.
- FIG. 3 is a schematic diagram of the timing relationship between IAB nodes, where DL represents downlink, UL represents uplink, Tx represents transmission, and Rx represents reception (Reception).
- the IAB node contains two functional units, MT and DU.
- the DL Rx timing and UL Tx timing of the second node respectively represent the DL Rx timing of the MT of the second node
- the UL Tx timing of the MT the DL Tx timing and the UL Rx timing of the second node respectively represent the DL Tx timing of the DU of the second node and the UL Rx timing of the DU.
- the timing relationship here is merely illustrative, and the actual timing relationship is not limited to this.
- St represents the transmission and reception conversion time or the transmission and reception time conversion time of the network device or terminal.
- the value of St depends on the actual sending and receiving conversion time or the sending and receiving conversion time of the second node, or is a predefined value. For a specific frequency range, the transmission and reception conversion time and the transmission and reception conversion time of the same type of equipment are equal, so there is no distinction when calculating using St.
- Te is the timing error limit of the network equipment or terminal.
- the timing error limit is the upper limit of the error between the actual transmission timing of the device and the reference timing, that is, the error cannot exceed [-Te,Te].
- the value of Te depends on the data transmission parameters of the corresponding link (such as subcarrier spacing, frequency range, etc.), or measurement error, or a predefined value.
- the reference timing can be understood as the theoretical transmission timing. For example, for the uplink transmission timing of the terminal, its reference timing is ahead of the downlink reception timing (N TA +N TAoffset ) ⁇ T c .
- N TA is the time advance of the uplink transmission of the network equipment or the terminal relative to the downlink reception.
- the value of the N TAoffset depends on the duplex mode and frequency range of the cell where the uplink transmission occurs, and can be predefined or determined by the first node.
- T c is the smallest time unit in the NR system.
- T margin is the unusable symbol margin.
- the value of T margin is predefined, or depends on the timing relationship of the node, or on the data transmission parameters of the link corresponding to the unavailable symbol, or on the maximum deviation of the timing of the radio frame between cells, which can be based on the symbol or NR
- the quantization is performed by integer multiples of the smallest time unit in the system (for example, 16T c ).
- N symbol is the number of symbols contained in a slot.
- T symbol_k represents the symbol duration corresponding to the subcarrier interval of data transmission of the kth link.
- FIG. 4 is a flowchart of a data transmission method provided by an embodiment. As shown in FIG. 4, the method provided in this embodiment includes the following steps.
- Step S4010 the first node receives timing related information.
- the data transmission method provided in this embodiment is applied to the first node in a mobile communication system, that is, the first node in the connection relationship shown in FIG. 2.
- the first node needs to avoid conflicts with the transmission resources used by the second node to schedule the third node.
- the first node will receive the timing related information reported by the second node.
- the timing related information reported by the second node is one or more types of information related to the second node and related to timing.
- the timing-related information includes at least one of the following: the time offset of the downlink reception timing of the second node relative to the downlink transmission timing of the first node; the uplink transmission timing of the second node relative to the second node The time offset of the downlink receiving timing; the time offset of the second node's downlink sending timing relative to the second node's downlink receiving timing; the time offset of the second node's uplink receiving timing relative to the second node's downlink sending timing Shift; the time offset of the uplink reception timing of the second node with respect to the downlink reception timing of the second node; the time offset of the uplink transmission timing of the second node with respect to the downlink transmission timing of the second node; the second node The time offset of the uplink sending timing relative to the uplink receiving timing of the second node; the transceiver conversion time of the second node; the transceiver conversion time of the second node.
- the timing related information is timing related information quantized in a specific time unit.
- the result of quantization is the result of quantizing the time offset and/or conversion time in a specific time unit; quantizing the time offset and/or conversion time in a specific time unit refers to dividing the time offset and/or conversion time Round up or down after a specific time unit; the specific time unit is the symbol duration corresponding to the reference subcarrier interval, or the symbol duration corresponding to the subcarrier interval of the current bandwidth part (Bandwidth part, BWP), or NR system
- BWP bandwidth part
- the smallest time unit in the NR system or an integer multiple of the smallest time unit in the NR system.
- Step S4020 The first node schedules data transmission according to timing related information, and the data transmission includes uplink data transmission or downlink data transmission.
- the first node can schedule the data transmission of the second node according to the timing related information.
- the data transmission of the second node scheduled by the first node includes uplink data transmission or downlink data transmission.
- the first node can determine the transmission resources that the DU of the second node may use according to the timing-related information reported by the second node and the time resource type of the second node, and leave a guard interval to avoid data from the first node to the second node
- the transmission affects the use of the resources of the DU of the second node, for example, avoiding the use of Hard resources that affect the DU of the second node or Soft resources indicated as available.
- the first node schedules data transmission of the second node according to timing-related information, including: the first node determines the unavailable symbols for data transmission between the second node and the first node according to the timing-related information; The data transmission of the second node is not scheduled on the unavailable symbol, or when the unavailable symbol overlaps with the data transmission resource of the second node, the first node deletes the symbol that overlaps the unavailable symbol.
- the unavailable symbols for data transmission between the second node and the first node refer to symbols that cannot be used by the MT of the second node.
- the second node schedules the third node to perform uplink transmission on a certain symbol, that is, the second node performs uplink reception, then due to the transmission/reception conversion time or the transmission/reception conversion time, and the timing relationship of each link of the second node, etc. Impact, in a certain time interval before or after this symbol, the first node cannot schedule the second node to perform uplink transmission, so the symbols in a certain time interval before or after this symbol are unusable symbols. The first node does not schedule the data transmission of the second node on unavailable symbols.
- the first node when the first node overlaps the unavailable symbol with the data transmission resource of the second node, in order to ensure the data transmission of the DU of the second node, the first node will delete the symbol that overlaps the unavailable symbol, then the first node It is also not possible to schedule the broken symbols for data transmission.
- the first node determines the unavailable symbols for data transmission between the second node and the first node according to at least one of the following information: timing related information; timing error limit; unavailable symbol margin; The direction of data transmission between the second node; the sub-carrier spacing of data transmission between the first node and the second node; the symbol duration of data transmission between the first node and the second node; the time resource type of the second node.
- the first node scheduling the data transmission of the second node does not expect to make the first type resources of the second node unusable, that is, when the first node schedules the data transmission of the second node, the second node must first be considered Time resource type, because the second node assumes that its first-type resources are always available. If the guard interval between the resources to be scheduled by the first node and the first-type resources of the second node meets specific requirements, the first The node can then schedule the second node on the resource. If the guard interval between the resource to be scheduled by the first node and the first type resource of the second node does not meet specific requirements, the second node cannot be scheduled on the resource.
- the specific requirements include at least one of the following: when the second node needs to do the receiving and sending conversion or the sending and receiving conversion, the guard interval is required to be greater than or equal to the receiving and sending conversion time/the sending and receiving conversion time; When receiving and switching, the resources used for data transmission between the first node and the second node cannot overlap with the resources of the first type of the second node, that is, the guard interval is required to be greater than or equal to 0; the guard interval is required to be greater than or equal to the transceiver conversion time /Sending and receiving conversion time.
- the first type of resources includes at least one of the following: Hard DL resources, Hard F resources, Hard UL resources, indicating available Soft DL resources, indicating available Soft F resources, indicating available Soft UL resources.
- the first node schedules the data transmission of the second node to make the first type of resources of the second node unusable, the first node will not schedule the data transmission of the second node. If the first node schedules the data transmission of the second node, If the first type resource of the second node cannot be used, the first node then schedules the data transmission of the second node.
- the data transmission method provided in this embodiment is applied to the first node. After the first node receives the timing-related information reported by the second node, it schedules the second node's uplink or downlink data according to the timing-related information and the time resource type of the second node Therefore, the transmission resource used by the first node to schedule the data transmission of the second node to conflict with the transmission resource used by the DU of the second node is avoided, thereby improving resource utilization and data transmission performance.
- the first node may also schedule the data transmission of the second node according to at least one of the following information: timing information of the first node; timing error limit; unavailable symbol margin; the first node and the second node The direction of data transmission between the first node and the second node; the subcarrier interval of data transmission between the first node and the second node; the symbol duration of data transmission between the first node and the second node; the time resource type of the second node.
- FIG. 5 is a flowchart of another data transmission method provided by an embodiment. As shown in FIG. 5, the method provided by this embodiment includes the following steps.
- Step S5010 The second node determines timing related information.
- the data transmission method provided in this embodiment is applied to the second node in the mobile communication system, that is, the second node in the connection relationship shown in FIG. 2, that is, the IAB node.
- the second node in the connection relationship shown in Figure 2 since the second node needs to schedule the transmission resources of the third node, when the first node needs to schedule the second node for data transmission, the transmission resources scheduled by the first node need to be avoided Affect the resource usage of the DU of the second node, such as avoiding the usage of affecting Hard resources or Soft resources indicated as available. Then the second node first needs to determine timing-related information, and the timing-related information determined by the second node is one or more types of information related to the second node and related to timing.
- the timing-related information includes at least one of the following: the time offset of the downlink reception timing of the second node with respect to the downlink transmission timing of the first node; the time offset of the uplink transmission timing of the second node with respect to the downlink reception timing of the second node Shift; the time offset of the downlink sending timing of the second node with respect to the downlink receiving timing of the second node; the time offset of the uplink receiving timing of the second node with respect to the downlink sending timing of the second node; the second node The time offset of the uplink reception timing of the second node relative to the downlink reception timing of the second node; the time offset of the uplink transmission timing of the second node relative to the downlink transmission timing of the second node; the uplink transmission timing of the second node relative to The time offset of the uplink receiving timing of the second node; the receiving and sending conversion time of the second node; the sending and receiving conversion time of the second node.
- the timing related information is timing related information quantized in a specific time unit.
- Step S5020 The second node reports timing related information to the first node.
- the timing related information is used by the first node to schedule data transmission of the second node, and the data transmission of the second node includes uplink data transmission or downlink data transmission.
- the second node does not expect the data transmission from the first node to the second node to make the first type resources of the second node unusable
- the first type resources include at least one of the following: Hard DL, Hard F, Hard UL indicates available Soft DL resources, indicates available Soft F resources, and indicates available Soft UL resources.
- the second node After the second node determines the timing-related information, it will report the timing-related information to the first node.
- the timing-related information is used by the first node to schedule data transmission of the second node, and the data transmission of the second node includes uplink data transmission or downlink data transmission. Then, after the first node receives the timing related information reported by the second node, the first node can schedule the data transmission of the second node according to the timing related information.
- the second node may also schedule the data transmission of the third node according to the scheduling situation of the first node to the second node, and the data transmission of the third node includes uplink data transmission or downlink data transmission. That is, after the first node schedules the second node, the second node obtains the transmission resources that the MT of the second node may use. Therefore, the second node can schedule the third node according to the resource usage of the MT of the second node. In this way, the scheduling of the data transmission of the second node to the third node may conflict with the transmission resources of the MT of the second node that the first node has determined.
- the second node scheduling data transmission of the third node according to the scheduling situation of the first node to the second node includes: the second node determines the third node according to the scheduling situation of the first node to the second node The unavailable symbol for data transmission with the second node; the second node does not schedule the data transmission of the third node on the unavailable symbol, or the second node overlaps the data transmission resources of the third node when the unavailable symbol Delete symbols that overlap with unavailable symbols.
- the unusable symbols for data transmission between the third node and the second node are symbols that cannot be used by the DU of the second node.
- the first node schedules the second node to perform uplink transmission on a certain symbol, that is, the second node performs uplink transmission, then due to the influence of the transmission and reception conversion time or the transmission and reception conversion time and the timing relationship of each link of the second node
- the second node cannot schedule the third node to perform uplink transmission, that is, the second node cannot perform uplink reception.
- the symbols in a certain time interval before or after this symbol are unusable symbols.
- the second node does not schedule data transmission of the third symbol on the unavailable symbol.
- the second node overlaps the unavailable symbol with the data transmission resources of the third node, in order to ensure that the first node has determined the scheduled data transmission, the second node will delete the symbol that overlaps the unavailable symbol, then the second node The node cannot schedule the broken symbols for data transmission.
- the second node determines the unavailable symbols for data transmission between the third node and the second node according to at least one of the following information: the scheduling situation of the first node to the second node; timing related information; timing error limit ; Unavailable symbol margin; the data transmission direction between the second node and the third node; the time resource type of the second node.
- the data transmission method provided in this embodiment is applied to a second node. After the second node determines timing-related information, it reports timing-related information to the first node.
- the timing-related information is used by the first node to schedule uplink data transmission or For downlink data transmission, the first node also needs to consider the time resource type of the second node when scheduling the second node, so as to avoid the transmission resources used by the first node for scheduling the data transmission of the second node and the transmission resources used by the DU of the second node Conflicts are generated, which improves resource utilization and data transmission performance.
- the second node may also schedule the data transmission of the third node according to at least one of the following information: the scheduling situation of the first node to the second node; timing related information; timing error limit; unavailable symbol margin ; The data transmission direction between the second node and the third node; the time resource type of the second node.
- FIG. 6 is a flowchart of another data transmission method provided by an embodiment. As shown in FIG. 6, the method provided by this embodiment includes the following steps.
- Step S6010 the first node receives the guard interval.
- the data transmission method provided in this embodiment is applied to the first node in a mobile communication system, that is, the first node in the connection relationship shown in FIG. 2.
- the first node receives timing-related information reported by the second node, and schedules the data transmission of the second node according to the timing-related information.
- the first node receives the guard interval reported by the second node.
- the guard interval reported by the second node refers to the time domain resources that the second node does not expect to use for data transmission between the first node and the second node.
- after the first node receives the timing-related information reported by the second node it can also determine the guard interval according to the timing-related information.
- the first node needs to avoid conflicts with the transmission resources used by the second node to schedule the third node. Then for the first node, the first node will receive the guard interval reported by the second node.
- the guard interval reported by the second node is one or more types of information related to the second node and related to the guard interval.
- the guard interval includes at least one of the following: downlink guard interval; uplink guard interval; unified guard interval; reference subcarrier interval.
- the downlink guard interval refers to the downlink guard interval between the first node and the second node, and includes at least one of the following: the guard interval at the start of each time slot of the downlink, and the downlink guard interval The guard interval at the end position of each time slot of the road, the guard interval at the start position of one or more consecutive time slots in the downlink, and the guard interval at the end position of one or more consecutive time slots in the downlink.
- the uplink guard interval refers to the uplink guard interval between the first node and the second node, including at least one of the following: the guard interval at the start of each time slot of the uplink, and the uplink The guard interval at the end position of each time slot of the road, the guard interval at the start position of one or more consecutive time slots in the uplink, and the guard interval at the end position of one or more consecutive time slots in the uplink, in The Hard resource of the second node or the uplink guard interval after the soft resource indicated as available, the uplink guard interval before the Hard resource of the second node or the soft resource indicated as available, and the Hard resource of the second node downlink The resource or the uplink guard interval after the soft downlink resource indicated as available, the uplink guard interval before the Hard downlink resource of the second node or the soft downlink resource indicated as available, the Hard uplink resource of the second node or The uplink guard interval after the soft uplink resource indicated as available, the uplink guard interval before the Hard downlink resource of the second node or the soft downlink resource indicated
- the unified guard interval refers to the guard interval of the link between the first node and the second node, and includes at least one of the following: the guard interval at the start position of each time slot, and the end position of each time slot
- the link includes uplink and downlink.
- the guard interval has a granularity of a specific time unit.
- the specific time unit is the symbol duration corresponding to the reference subcarrier interval, or the symbol duration corresponding to the subcarrier interval of the current BWP, or the smallest time unit in the NR system, or an integer multiple of the smallest time unit in the NR system.
- the guard interval is obtained based on at least one of the following information: timing information of each link of the second node; downlink reception timing of the second node; downlink transmission timing of the second node; uplink transmission timing of the second node ; The uplink reception timing of the second node; the time advance of the uplink transmission timing of the second node relative to the downlink reception timing of the second node; the timing advance compensation; the index value indicated by the timing advance command; the uplink reception timing of the first node relative to The time offset of the downlink sending timing of the first node; half of the time offset of the uplink receiving timing of the first node with respect to the downlink sending timing of the first node; timing error limit; sending and receiving conversion time; sending and receiving conversion time; Unavailable symbol margin; reference subcarrier spacing.
- Step S6020 The first node schedules data transmission according to the guard interval, and the data transmission includes uplink data transmission or downlink data transmission.
- the first node can schedule the data transmission of the second node according to the guard interval.
- the data transmission of the second node scheduled by the first node includes uplink data transmission or downlink data transmission. Since the guard interval reported by the second node has considered the timing information, timing error limits, etc. of each link of the second node, and the first node can know the time resource type of the second node, the first node is scheduling the second node During data transmission, the received guard interval can be used to prevent data transmission from the first node to the second node from affecting the use of the DU resource of the second node, for example, to avoid affecting the Hard resource of the second node DU or indicating that it is available Use of Soft resources.
- the first node schedules the data transmission of the second node according to the guard interval, including: the first node does not schedule the data transmission of the second node during the guard interval; or the first node and the second node When the resources of data transmission overlap, the symbols that overlap with the guard interval are deleted.
- the data transmission method provided in this embodiment is applied to the first node. After the first node receives the guard interval reported by the second node, it schedules the uplink or downlink data transmission of the second node according to the guard interval, thereby preventing the first node from scheduling the second node.
- the transmission resource used by the node for data transmission conflicts with the transmission resource used by the DU of the second node, which improves resource utilization and data transmission performance.
- FIG. 7 is a flowchart of another data transmission method provided in an embodiment. As shown in FIG. 7, the method provided in this embodiment includes the following steps.
- Step S7010 the second node determines the guard interval.
- the data transmission method provided in this embodiment is applied to the second node in the mobile communication system, that is, the second node in the connection relationship shown in FIG. 2, that is, the IAB node.
- the second node determines timing related information and reports the timing related information to the first node.
- the second determination is the guard interval.
- the guard interval determined by the second node refers to time domain resources that the second node does not expect to use for data transmission between the first node and the second node.
- the second node may also determine the guard interval according to the timing related information.
- the transmission resources scheduled by the first node need to be avoided Affect the resource usage of the DU of the second node, for example, influence the usage of Hard resources or Soft resources indicated as available. Then the second node first needs to determine the guard interval, and the guard interval determined by the second node is one or more types of information related to the second node and related to the guard interval.
- the guard interval includes at least one of the following: downlink guard interval; uplink guard interval; unified guard interval; reference subcarrier interval.
- the downlink guard interval refers to the downlink guard interval between the first node and the second node, and includes at least one of the following: the guard interval at the start of each time slot of the downlink, and the downlink guard interval The guard interval at the end position of each time slot of the road, the guard interval at the start position of one or more consecutive time slots in the downlink, and the guard interval at the end position of one or more consecutive time slots in the downlink.
- the uplink guard interval refers to the uplink guard interval between the first node and the second node, including at least one of the following: the guard interval at the start of each time slot of the uplink, and the uplink The guard interval at the end position of each time slot of the road, the guard interval at the start position of one or more consecutive time slots in the uplink, and the guard interval at the end position of one or more consecutive time slots in the uplink, in The Hard resource of the second node or the uplink guard interval after the soft resource indicated as available, the uplink guard interval before the Hard resource of the second node or the soft resource indicated as available, and the Hard resource of the second node downlink The resource or the uplink guard interval after the soft downlink resource indicated as available, the uplink guard interval before the Hard downlink resource of the second node or the soft downlink resource indicated as available, the Hard uplink resource of the second node or The uplink guard interval after the soft uplink resource indicated as available, the uplink guard interval before the Hard downlink resource of the second node or the soft downlink resource indicated
- the unified guard interval refers to the guard interval of the link between the first node and the second node, and includes at least one of the following: the guard interval at the start position of each time slot, and the end position of each time slot
- the link includes uplink and downlink.
- the guard interval has a granularity of a specific time unit.
- the specific time unit is the symbol duration corresponding to the reference subcarrier interval, or the symbol duration corresponding to the subcarrier interval of the current BWP, or the smallest time unit in the NR system, or an integer multiple of the smallest time unit in the NR system.
- the guard interval is obtained based on at least one of the following information: timing information of each link of the second node; downlink reception timing of the second node; downlink transmission timing of the second node; uplink transmission timing of the second node ; The uplink reception timing of the second node; the time advance of the uplink transmission timing of the second node relative to the downlink reception timing of the second node; the timing advance compensation; the index value indicated by the timing advance command; the uplink reception timing of the first node relative to The time offset of the downlink sending timing of the first node; half of the time offset of the uplink receiving timing of the first node with respect to the downlink sending timing of the first node; timing error limit; sending and receiving conversion time; sending and receiving conversion time; Unavailable symbol margin; reference subcarrier spacing.
- Step S7020 The second node reports a guard interval to the first node.
- the guard interval is used by the first node to schedule data transmission of the second node, and the data transmission of the second node includes uplink data transmission or downlink data transmission.
- the second node After the second node determines the guard interval, it will report the guard interval to the first node.
- the guard interval is used by the first node to schedule the data transmission of the second node, and the data transmission of the second node includes uplink data transmission or downlink data transmission. Then, after the first node receives the guard interval reported by the second node, the first node can schedule the data transmission of the second node according to the guard interval. Since the guard interval reported by the second node has considered the timing information, timing error limits, etc.
- the received guard interval can be used to prevent data transmission from the first node to the second node from affecting the use of the DU resource of the second node, for example, to avoid affecting the Hard resource of the second node DU or indicating that it is available Use of Soft resources.
- the second node may also schedule the data transmission of the third node according to the scheduling situation of the first node to the second node, and the data transmission of the third node includes uplink data transmission or downlink data transmission.
- the second node scheduling data transmission of the third node according to the scheduling situation of the first node to the second node includes: the second node determines the third node according to the scheduling situation of the first node to the second node The unavailable symbol for data transmission with the second node; the second node does not schedule the data transmission of the third node on the unavailable symbol, or the second node overlaps the data transmission resources of the third node when the unavailable symbol Delete symbols that overlap with unavailable symbols.
- the second node determines the unavailable symbols for data transmission between the third node and the second node according to at least one of the following information: the scheduling situation of the first node to the second node, timing related information; timing error limit ; Unavailable symbol margin; the data transmission direction between the second node and the third node; the time resource type of the second node.
- the data transmission method provided in this embodiment is applied to the second node. After the second node determines the guard interval, it reports the guard interval to the first node.
- the guard interval is used by the first node to schedule uplink data transmission or downlink data transmission of the second node Therefore, it is avoided that the transmission resource used by the first node for scheduling the data transmission of the second node conflicts with the transmission resource used by the DU of the second node, thereby improving resource utilization and data transmission performance.
- it also includes at least one of the following situations: the second node does not expect to receive data sent by the first node during the guard interval; the second node does not expect to send data to the first node during the guard interval; the second node It is not expected to be scheduled by the first node on the guard interval.
- FIG. 4 to FIG. 7 show the implementation process of the data transmission method provided by the embodiment of the present application.
- the following describes the data transmission method provided by the embodiment of the present application with several embodiments.
- the first node schedules the data transmission of the second node according to the timing related information reported by the second node.
- the first node determines the unavailable symbol of the first link or the third link according to the timing related information reported by the second node, that is, determines the unavailable symbol of the second node MT.
- the Hard resource or Soft IA resource of the second node DU is always available to its child links (ie the second link, the fourth link), so the parent backhaul link of the second node (ie the first link, the third link) Link) data transmission should try to avoid affecting the use of DU Hard resources or Soft IA resources.
- the first node receives the timing related information reported by the second node.
- the timing-related information includes at least one of the following: the time offset T offset1 of the downlink reception timing of the second node relative to the downlink transmission timing of the first node; the uplink transmission timing of the second node relative to the downlink reception timing of the second node time offset T offset2; downstream node with respect to downlink transmission timing of the second reception timing point of time offset T offset3; uplink receiving node with respect to the timing of the downlink transmission timing of the time point of the second partial Shift T offset4 ; time offset of the second node's uplink receiving timing with respect to the second node's downlink receiving timing T offset5 ; time offset of the second node's uplink sending timing with respect to the second node's downlink sending timing T offset6 ; Transmitting time of the second node; Transmitting time of the second node.
- the timing related information may be the result of quantization, and the result of quantization is the result of quantizing the time offset and or the conversion time in a specific time unit.
- quantifying the time offset and or the conversion time in a specific time unit refers to dividing the time offset and or the conversion time by the specific time unit and then rounding up or down.
- the specific time unit is the symbol duration corresponding to the reference subcarrier interval, or the symbol duration corresponding to the subcarrier interval of the current BWP, or the smallest time unit in the NR system, or an integer multiple of the smallest time unit, such as 16T c .
- the first node schedules the uplink or downlink transmission of the second node according to at least one of the following parameters: timing of the first node, timing related information, timing error limit, unavailable symbol margin, the first node and the second node The direction of data transmission between nodes, and the time resource type of the second node.
- the second node does not expect the data transmission between the first node and the second node to affect the use of type 1 resources of the second node DU.
- the first node obtains at least one of the following parameters: the DL Tx timing of the first node or the time difference ⁇ T1 between the DL Tx timing of the second node and the DL Rx timing of the second node, the UL Tx of the second node The time difference ⁇ T2 between the timing and the UL Rx timing of the second node, the time difference between the DL Tx timing of the second node and the DL Tx timing of the first node, the timing error limit, and the unavailable symbol margin.
- the first link or the third link is determined according to at least one parameter The unavailable symbol.
- the first node avoids these unavailable symbols when scheduling the uplink or downlink transmission of the second node, or eliminates the overlapping symbols when the scheduled symbols overlap with the unavailable symbols.
- the type 1 resource includes at least one of the following: Hard DL, Hard F, Hard UL, which indicates an available Soft resource.
- the Soft resource includes at least one of the following: Soft DL, Soft F, and Soft UL.
- the first node uses any of the following methods to obtain the time difference ⁇ T1:
- Manner 1 Obtain according to timing related information reported by the second node.
- T offset1 For example, directly report the time offset of the downlink reception timing of the second node relative to the downlink transmission timing of the first node (that is, the delay between the downlink reception of the second node and the downlink transmission of the first node) T offset1 , namely ⁇ T1; or , Report the time offset T offset3 of the second node's downlink transmission timing relative to the second node's downlink reception timing, that is ⁇ T1; or, report the time of the second node's uplink transmission timing relative to the second node's downlink reception timing
- the offset (that is, the time advance) T offset2 , and ⁇ T1 is calculated according to T offset2.
- T offset2 may comprise N TAoffset, or may not contain N TAoffset, contains N TAoffset may be predefined.
- the value of N TAoffset depends on the duplex mode and frequency range of the cell where the uplink transmission occurs, and can be predefined or determined by the first node.
- the first node saves the initial time advance N TA (that is, the absolute time advance) sent by the first node to the second node when the second node initially accesses, and the relative current time advance subsequently sent to the second node
- N TA_old N TA_old + (T A -31) ⁇ 16 ⁇ 64/2 ⁇
- ⁇ is the subcarrier spacing configuration
- N TA_new ⁇ T c is the absolute time advance.
- T c is the smallest time unit in the NR system.
- the first node uses any of the following methods to obtain the time difference ⁇ T2:
- Manner 1 Obtain according to timing related information reported by the second node.
- the second node to report the transmission timing of the uplink reception timing of the second node for downlink time offset T offset2 uplink reception timing of the second node and the downstream node with respect to the reception timing time offset T offset5 , Obtain the time difference ⁇ T2 between the uplink transmission timing and the uplink reception timing of the second node; or report the time offset T offset4 of the uplink reception timing of the second node relative to the downlink transmission timing of the second node and the time offset of the second node.
- the time offset T offset6 of the uplink transmission timing with respect to the downlink transmission timing of the second node obtains the time difference ⁇ T2 between the uplink transmission timing and the uplink reception timing of the second node.
- Method 2 The second node directly reports ⁇ T2.
- the method for the first node to obtain the transmission and reception conversion time is predefined or reported by the second node.
- the following example takes the type 1 resource as the Hard resource as an example, and shows that when the first node schedules the uplink or downlink transmission of the second node on the resource time adjacent to the Hard resource of the second node DU, it determines whether the first link or The method of unavailable symbols for the third link.
- the first node schedules the downlink transmission of the second node after the Hard resource of the DU of the second node.
- Fig. 8a is a timing diagram of a data transmission method provided by Embodiment 1 of the application.
- ⁇ T1 is greater than or equal to the threshold T th1
- the DL available symbols of the second node MT that is, the first link
- the available symbols of DU start from the first symbol after the Hard resource of the second node DU. That is, the number of unavailable symbols in the first link after the Hard resource is 0, that is, only ⁇ T1 is used as the guard interval.
- the first symbol after the Hard resource of the second node DU in FIG. 8a is the symbol 0 of the next slot.
- Fig. 8b is a timing diagram of another data transmission method according to the first embodiment of the application.
- ⁇ T1 is less than the threshold T th1
- the DL available symbols of the second node MT are from the second node DU.
- T symbol_1 is the symbol duration
- the corresponding sub-carrier interval is the sub-carrier interval of the first link data transmission.
- the second symbol after the Hard resource of the second node DU in FIG. 8b (the initial available symbol of the MT after Hard) is the symbol 1 of the next time slot.
- the threshold T th1 is equal to the transmission/reception conversion time St, or the sum of the transmission/reception conversion time St and the timing error limit Te, or the sum of the transmission/reception conversion time St, the timing error limit Te, and the first unusable symbol margin T margin1 .
- the first node obtains the downlink transmission timing of the second node according to the time offset T offset3 of the downlink transmission timing of the second node relative to the downlink reception timing of the second node, and the value of T margin1 depends on the first node.
- the downlink transmission timing of a node and the second node is, for example, the time difference between the two, or is predefined, or the upper limit of the difference in the downlink transmission timing between nodes.
- the DL available symbol of the second node MT (that is, the available symbol of the first link) Start from the first symbol after the non-Hard resource of the second node DU.
- the first node schedules the downlink transmission of the second node before the Hard resource of the second node DU.
- Fig. 8c is a timing diagram of another data transmission method according to the first embodiment of the application.
- T symbol_1- ⁇ T1 is greater than or equal to the threshold T th2
- the DL available symbol of the second node MT ie The available symbol of the first link
- the second symbol before the Hard resource of the second node DU in FIG. 8c is the symbol N symbol -2 of the previous time slot.
- Fig. 8d is a timing diagram of another data transmission method provided in the first embodiment of the application.
- T symbol_1- ⁇ T1 is less than the threshold T th2
- the DL available symbol of the second node MT that is, the first Available symbol of a link
- the Hard resource of the second node DU End of symbols That is, the number of unavailable symbols in the first link before the Hard resource.
- the third symbol before the Hard resource of the second node DU in FIG. 8d is the symbol N symbol -3 of the previous time slot.
- T symbol_1 is the symbol duration
- the corresponding sub-carrier interval is the sub-carrier interval of the first link data transmission.
- the threshold T th2 is equal to the transceiver conversion time St, or the sum of the transceiver conversion time St and the timing error limit Te, or the sum of the transceiver conversion time St, the timing error limit Te, and the second unusable symbol margin T margin2 .
- the first node obtains the downlink transmission timing of the second node according to the time offset T offset3 of the downlink transmission timing of the second node with respect to the downlink reception timing of the second node.
- T margin2 depends on the downlink transmission timing of the first node and the second node, for example, the time difference between the two, or it is predefined, or the upper limit of the difference between the downlink transmission timing between nodes, or depends on the second node.
- Data transmission parameters of the node's link is possible to the downlink transmission timing of the first node and the second node, for example, the time difference between the two, or it is predefined, or the upper limit of the difference between the downlink transmission timing between nodes, or depends on the second node.
- the thresholds T th2 and T th1 are equal.
- the DL available symbol of the second node MT (that is, the available symbol of the first link)
- the first symbol or the second symbol before the non-Hard resource of the second node DU ends.
- the first node schedules the uplink transmission of the second node after the Hard resource of the second node DU.
- FIG. 8e is a timing diagram of another data transmission method provided by Embodiment 1 of the application.
- T symbol_3- ⁇ T2 is greater than or equal to the threshold T th3
- the UL available symbol of the second node MT (ie The available symbols of the third link) start from the second symbol after the Hard resource of the second node DU. That is, the number of unusable symbols in the third link after the Hard resource is 1.
- the second symbol after the Hard resource of the second node DU in FIG. 8e is symbol 1 of the next slot.
- Fig. 8f is a timing diagram of another data transmission method according to the first embodiment of the application.
- T symbol_3 - ⁇ T2 is less than the threshold T th3
- the UL available symbol of the second node MT starts from the second After the Hard resource of the node DU Symbols start. That is, the number of unavailable symbols in the third link after the Hard resource is among them, Indicates rounding up.
- the third symbol after the Hard resource of the second node DU in FIG. 8f is symbol 2 of the next slot.
- T symbol_3 is the symbol duration
- the corresponding sub-carrier interval is the sub-carrier interval of the third link data transmission.
- the threshold T th3 is equal to the transceiver conversion time St, or the sum of the transceiver conversion time St and the timing error limit Te, or the sum of the transceiver conversion time St, the timing error limit Te and the third unusable symbol margin T margin3
- the value of T margin3 depends on the data transmission parameter of the link of the second node, or is predefined.
- the UL available symbol of the second node MT (that is, the available symbol of the third link) Start from the first symbol or the second symbol after the non-Hard resource of the second node DU.
- the first node schedules the uplink transmission of the second node before the Hard resource of the second node DU.
- Fig. 8g is a timing diagram of another data transmission method provided in the first embodiment of the application.
- the UL available symbols of the second node MT that is, the third link The available symbol of the road
- the first symbol before the Hard resource of the second node DU in FIG. 8g is the symbol N symbol -1 of the previous time slot.
- Fig. 8h is a timing diagram of another data transmission method according to the first embodiment of the application.
- ⁇ T2 is less than the threshold T th4
- the UL available symbols of the second node MT are in the second node DU.
- the second symbol before the Hard resource of the second node DU in FIG. 8h is the symbol N symbol -2 of the next time slot.
- T symbol_3 is the symbol duration
- the corresponding sub-carrier interval is the sub-carrier interval of the third link data transmission.
- the threshold T th4 is equal to the transmission/ reception conversion time St, or the sum of the transmission/reception conversion time St and the timing error limit Te, or the sum of the transmission/reception conversion time St, the timing error limit Te, and the fourth unusable symbol margin T margin4 .
- the value of T margin4 depends on the data transmission parameter of the link of the second node, or is predefined.
- the thresholds T th4 and T th3 are equal.
- the UL available symbol of the second node MT (that is, the available symbol of the third link) The first symbol ends before the non-Hard resource of the second node DU.
- the first node schedules the second node according to the guard interval reported by the second node.
- the first node receives the guard interval reported by the second node, and schedules the uplink or downlink transmission of the second node according to the guard interval.
- the guard interval includes at least one of the following: downlink guard interval, uplink guard interval, flexible resource guard interval, uniform guard interval, and reference subcarrier interval ⁇ ref .
- the downlink guard interval refers to the guard interval of the first link, including at least one of the following: the guard interval N start1 at the start position of each time slot, the guard interval N end1 at the end position of each time slot, The guard interval N after1 of the first link after the Hard resource or Soft IA resource of the second node, and the guard interval N before1 of the first link before the Hard resource or Soft IA resource of the second node.
- the uplink guard interval refers to the guard interval of the third link, including at least one of the following: the guard interval N start2 at the start position of each time slot, the guard interval N end2 at the end position of each time slot, The guard interval N after2 of the third link after the Hard resource or Soft IA resource of the second node, and the guard interval N before2 of the third link before the Hard resource or Soft IA resource of the second node.
- the time slot is the time slot corresponding to the third link.
- the unified guard interval refers to the guard interval of the link between the first node and the second node, including at least one of the following: the guard interval at the beginning of each time slot, and the guard interval at the end of each time slot Guard interval, the guard interval of the link between the first node and the second node after the Hard resource or Soft IA resource of the second node, and the first node and the second node before the Hard resource or Soft IA resource of the second node The guard interval between the links.
- the guard interval of the flexible resource refers to at least one of the following: the guard interval N after3 of the first link after the Hard flexible resource or Soft IA flexible resource of the second node, and the Hard flexible resource or Soft IA of the second node after the first guard interval prior to the first N before3 link, flexible resource Hard or Soft IA second node a third link flexible resource protection interval before the N after4 flexible resource, the second node Hard or Soft IA flexible resource resources flexibly Three-link guard interval N before4 .
- the Hard resource includes at least one of the following: Hard DL, Hard UL, and Hard F.
- the Soft resource includes at least one of the following: Soft DL, Soft UL, Soft F.
- scheduling the uplink or downlink transmission of the second node according to the guard interval refers to not scheduling the uplink or downlink transmission of the second node during the guard interval, or the guard interval overlaps with the resources of the second node's uplink or downlink transmission At the time, delete the symbols that overlap with the guard interval.
- the guard interval is a value in a specific time unit.
- the specific time unit is the symbol duration corresponding to the reference subcarrier interval, or the symbol duration corresponding to the subcarrier interval of the current bandwidth part (BWP, Bandwith Part), or the smallest time unit in the NR system, or the smallest time unit in the NR system Integer multiples, such as 1024T c .
- the guard interval is a quantized value of the symbol duration corresponding to the subcarrier interval of the current BWP.
- the guard interval is obtained by at least one of the following: the downlink reception timing of the second node, the downlink transmission timing of the second node, the uplink transmission timing of the second node, the uplink reception timing of the second node, and the second node
- the node's uplink transmission timing is relative to the second node's downlink reception timing by the time advance N TA , the timing advance compensation N TAoffset , the index value T A indicated by the timing advance command
- the first node's uplink reception timing is relative to the first node's downlink
- T unit refers to the symbol duration corresponding to the reference subcarrier interval or the subcarrier interval of the current BWP, or an integer multiple of the minimum time unit of the NR system;
- T symbol refers to the symbol duration corresponding to the reference subcarrier interval or the subcarrier interval of the current BWP.
- the first node determines the actual transmission of the first link or the third link according to the guard interval, the subcarrier interval ⁇ and the reference subcarrier interval ⁇ ref used for actual transmission of the first link or the third link The protection interval.
- guard interval at the beginning of each time slot Guard interval at the end of each time slot Guard interval after the Hard resource or Soft IA resource of the second node Guard interval before Hard resource or Soft IA resource of the second node
- the guard interval of the actual transmission is determined in a manner similar to that of determining the guard interval type of the actual downlink transmission, that is, the guard interval of the actual transmission is the uplink protection. Interval or guard interval of flexible resource multiplied by Then round up, so I won’t repeat it here.
- the second node schedules the third node according to the scheduling of the first node to the second node.
- the second node for the Soft resource of the second node or the Soft resource that is not indicated as available, the second node according to the scheduling situation of the first node to the second node, that is, the link between the first node and the second node To determine the unavailable symbol of the second node's sub-link (ie, the second link or the fourth link). For the Hard resource of the second node or the Soft resource indicated as available, the second node does not need to consider the scheduling situation of the first node to the second node when the second node schedules the third node.
- the second node schedules uplink or downlink transmission of the third node based on at least one piece of information.
- the at least one piece of information includes at least one of the following: timing related information, timing error limit, unusable symbol margin, resource scheduling of the first node to the second node, and time resource type of the second node.
- the timing-related information includes at least one of the following: the time offset T offset1 of the downlink reception timing of the second node relative to the downlink transmission timing of the first node; the uplink transmission timing of the second node relative to the downlink reception timing of the second node time offset T offset2; downstream node with respect to downlink transmission timing of the second reception timing point of time offset T offset3; uplink receiving node with respect to the timing of the downlink transmission timing of the time point of the second partial Shift T offset4 ; time offset of the second node's uplink receiving timing with respect to the second node's downlink receiving timing T offset5 ; time offset of the second node's uplink sending timing with respect to the second node's downlink sending timing T offset6 ; Transmitting time of the second node; Transmitting time of the second node.
- the second node determines unavailable symbols based on at least one of the following: timing-related information, timing error limit, unavailable symbol margin, data transmission direction between the second node and the third node, and the second node The type of time resource.
- the second node cannot schedule the uplink or downlink transmission of the third node on the unavailable symbol, or when the resources of the third node's uplink or downlink transmission overlap with the unavailable symbol, the overlap with the unavailable symbol is eliminated. Stacked symbols.
- the following example provides a method for the second node to determine the unavailable symbol of the second link or the fourth link according to the scheduling of the first node to the second node.
- ⁇ T3 is the time difference between the second node's downlink sending timing and the second node's downlink receiving timing
- ⁇ T4 is the time difference between the second node's uplink receiving timing and the second node's uplink sending timing
- ⁇ T5 Is the time difference between the uplink reception timing of the second node and the downlink reception timing of the second node
- ⁇ T6 is the time difference between the downlink transmission timing of the second node and the uplink transmission timing of the second node.
- the second node can calculate or derive the values of ⁇ T3, ⁇ T4, ⁇ T5 and ⁇ T6 according to the timing related information.
- the DL resource of the second node DU is Soft DL resource, or F resource for scheduling DL transmission; the UL resource of the second node DU is Soft UL resource, or F resource for scheduling UL transmission.
- Example 1 MT Downlink was DU Downlink before
- FIG. 9a is a timing diagram of a data transmission method provided in Embodiment 3 of this application.
- ⁇ T3 ⁇ T th5 there is no DL unavailable symbol of the second node DU before the symbol occupied by the first link, that is, the number of DL unavailable symbols of the second node DU before the symbol occupied by the first link is 0.
- FIG. 9b is a timing diagram of another data transmission method provided in the third embodiment of the application.
- ⁇ T3 ⁇ T th5
- the symbol before the symbol occupied by the first link The symbols are DL unavailable symbols of the second node DU.
- one symbol before the symbol occupied by the first link is the DL unusable symbol of the second node DU.
- ⁇ T3 is the time difference between the downlink transmission timing (ie DU DL Tx timing) of the second node and the downlink reception timing of the second node (ie DL Rx timing of the MT).
- the threshold T th5 is equal to the transmission/ reception conversion time St, or the sum of the transmission/reception conversion time St and the timing error limit Te, or the sum of the transmission/reception conversion time St, the timing error limit Te, and the fifth unusable symbol margin T margin5 .
- T margin5 depends on the data transmission parameter of the second link, or is a predefined value.
- the DL resource of the second node DU follows the time domain resource occupied by the first link (ie, the DL of the MT of the second node).
- FIG. 9c is a timing diagram of another data transmission method provided in the third embodiment of the application.
- T symbol_1 - ⁇ T3 ⁇ T th6 the symbol after the symbol occupied by the first link is the DL unavailable symbol of the second node DU, that is, the DL of the second node is unavailable after the symbol occupied by the first link.
- the number of symbols used is 1.
- FIG. 9d is a timing diagram of another data transmission method provided in Embodiment 3 of this application.
- T symbol_1- ⁇ T3 ⁇ T th6 the symbol after the symbol occupied by the first link The symbols are DL unavailable symbols of the second node DU.
- two symbols after the symbols occupied by the first link are DL unavailable symbols of the second node DU, that is, symbols 2 and 3 are DL unavailable symbols of the second node DU.
- ⁇ T3 is the time difference between the downlink transmission timing (ie DU DL Tx timing) of the second node and the downlink reception timing of the second node (ie DL Rx timing of the MT).
- the threshold T th6 is equal to the transceiver conversion time St, or the sum of the transceiver conversion time St and the timing error limit Te, or the sum of the transceiver conversion time St, the timing error limit Te, and the sixth unusable symbol margin T margin6 .
- T margin6 depends on the data transmission parameter of the second link, or is a predefined value.
- the thresholds T th6 and T th5 are equal.
- FIG. 9e is a timing diagram of another data transmission method provided in Embodiment 3 of this application.
- T symbol_3- ⁇ T4 ⁇ T th7 one symbol before the symbol occupied by the third link is the UL unusable symbol of the second node DU. That is, the symbol 0 in FIG. 9e is the UL unavailable symbol of the second node DU.
- FIG. 9f is a timing diagram of another data transmission method provided in the third embodiment of the application.
- T symbol_3- ⁇ T4 ⁇ T th7 the symbol before the symbol occupied by the third link
- the symbols are DL unavailable symbols of the second node DU.
- the 2 symbols before the symbols occupied by the third link in FIG. 9f are DL unusable symbols of the second node DU.
- ⁇ T4 is the time difference between the uplink reception timing (ie DU UL Rx timing) of the second node and the uplink transmission timing (ie MT UL Tx timing) of the second node.
- the threshold T th7 is equal to the transceiver conversion time St, or the sum of the transceiver conversion time St and the timing error limit Te, or the sum of the transceiver conversion time St, the timing error limit Te, and the sixth unusable symbol margin T margin7 .
- T margin7 depends on the data transmission parameter of the fourth link, or is a predefined value.
- the time domain resources occupied by the third link (ie, the UL of the MT of the second node) are followed by the UL resources of the second node DU.
- the first node allocates symbols 1 and 2 to the MT of the second node, that is, the symbols occupied by the third link are symbols 1 and 2.
- FIG. 9g is a timing diagram of another data transmission method provided in Embodiment 3 of this application. When ⁇ T4 ⁇ T th8 , there is no UL unusable symbol of the second node DU after the symbol occupied by the third link.
- FIG. 9h is a timing diagram of another data transmission method provided in Embodiment 3 of the application.
- the symbol after the symbol occupied by the third link The symbols are DL unavailable symbols of the second node DU.
- one symbol before the symbol occupied by the third link is the DL unavailable symbol of the second node DU, that is, the symbol 3 is the DL unavailable symbol of the second node DU.
- ⁇ T4 is the time difference between the uplink reception timing (ie DU UL Rx timing) of the second node and the uplink transmission timing (ie MT UL Tx timing) of the second node.
- the threshold T th8 is equal to the transmission/ reception conversion time St, or the sum of the transmission/reception conversion time St and the timing error limit Te, or the sum of the transmission/reception conversion time St, the timing error limit Te, and the sixth unusable symbol margin T margin8 .
- T margin8 depends on the data transmission parameter of the fourth link, or is a predefined value.
- the thresholds T th8 and T th7 are equal.
- Example 5 Before and after MT Downlink is a method of DU Uplink
- the time domain resources occupied by the first link are the UL resources of the second node DU.
- the MT of the second node receives on the first link, and the DU of the second node is also received on the UL resources of the second node. Therefore, the second node does not need to receive and transmit conversion or transmit and receive conversion.
- Example 6 Before and after MT Downlink is another method for DU Uplink
- the time domain resources occupied by the first link are the UL resources of the second node DU.
- the resources occupied by the first link and the UL resources of the DU overlap in the time domain and the two links receive at the same time, there may be mutual interference.
- the following scheme can be considered: When the resources occupied by the first link and the DU When the UL resources of the first link do not overlap in the time domain, the number of UL unavailable symbols of the second node before and after the symbols occupied by the first link is 0; when the resources occupied by the first link and the UL resources of the DU are in the time domain When the upper overlap, the overlapping symbols in the UL resources of the second node DU are the UL unusable symbols of the second node DU.
- ⁇ T5 is the time difference between the uplink reception timing of the second node (i.e. DU UL Rx) and the downlink reception timing of the second node (i.e. MT DL Rx), and the uplink reception timing of the second node is longer than the downlink reception timing of the second node. If the reception timing is advanced, then: the UL resource of the second node DU before the time domain resource occupied by the first link does not overlap with the symbol occupied by the first link, then there is no second node DU before the symbol occupied by the first link The number of UL unavailable symbols for the second node before the symbols occupied by the first link is 0, as shown in FIG.
- FIG. 9i which is another data transmission method provided in the third embodiment of this application
- FIG. 9j is a timing diagram of another data transmission method provided in the third embodiment of the application, and symbol 2 is an unusable symbol.
- Example 7 Before and after MT Uplink is a method when DU Downlink
- the time domain resources occupied by the third link are the DL resources of the second node DU.
- the MT of the second node is sent on the third link, and the DU of the second node is also sent on the DL resource of the second node. Therefore, the second node does not need to send and receive conversion or send and receive conversion.
- Example 8 Before and after MT Uplink is another method when DU Downlink
- the time domain resources occupied by the third link are the DL resources of the second node DU.
- the resources occupied by the third link and the DL resources of the DU overlap in the time domain, and the two links receive at the same time, there may be mutual interference.
- the following scheme can be considered: When the resources occupied by the third link and the DU When the DL resources of the third link do not overlap in the time domain, the number of DL unavailable symbols of the second node before and after the symbols occupied by the third link is 0; when the resources occupied by the third link and the DL resources of the DU are in the time domain When the upper overlap, the overlapping symbol in the DL resource of the second node DU is the DL unavailable symbol of the second node DU.
- ⁇ T6 is the time difference between the downlink transmission timing of the second node (i.e. DUDL Tx) and the uplink transmission timing of the second node (i.e. MT UL Tx), and the downlink transmission timing of the second node is longer than the uplink transmission timing of the second node. If the transmission timing is delayed, the DL resource of the second node DU before the time domain resource occupied by the third link overlaps with the symbol occupied by the third link, and the overlapped symbol means that the DL of the second node DU is unavailable Symbol, as shown in Fig. 9k, Fig.
- 9k is a timing diagram of another data transmission method provided in the third embodiment of the application, symbol 0 is an unavailable symbol; the second node DU after the time domain resource occupied by the third link There is no overlap between the DL resources and the symbols occupied by the third link, there is no DL unavailable symbol of the second node DU after the symbol occupied by the third link, that is, the DL of the second node after the symbol occupied by the third link
- the number of unavailable symbols is 0, as shown in FIG. 91, which is a timing diagram of another data transmission method provided in Embodiment 3 of this application.
- Embodiment 4 Solution when unavailable symbols conflict with cell-specific signals or channels
- cell-specific signals or channels are sent periodically, so unavailable symbols on a link may conflict with the transmitted cell-specific signals or channel resources.
- conflicts may be as follows:
- Collision avoidance methods include at least one of the following: cell-specific signals or channels cannot be transmitted on unavailable symbols; cell-specific signals or channels can be transmitted on unavailable symbols; cell-specific signals or some of the signals or channels in the channel can be transmitted on unavailable symbols The other part cannot be transmitted on unavailable symbols; the node determines whether to transmit cell-specific signals or channels on unavailable symbols.
- the cell-specific signal or channel includes at least one of the following: synchronization signal and physical broadcast channel block, random access channel, channel state information reference signal, scheduling request, remaining minimum system information.
- the determined sub-carrier interval corresponding to the unavailable symbol of the second node's child link is the parent backhaul link of the second node (i.e. the first link or the third Link)
- the subcarrier spacing of data transmission is the determined sub-carrier interval corresponding to the unavailable symbol of the second node's child link (i.e. the second link or the fourth link) is the parent backhaul link of the second node (i.e. the first link or the third Link)
- the unusable symbol is replaced with a guard interval to obtain a solution when the guard interval conflicts with a cell-specific signal or channel.
- Embodiment 5 Solution to resource conflict between MT and DU of the second node
- the scheduling resources of the second node MT may conflict with the scheduling resources of the DU.
- the scheduling resource of the MT of the second node conflicts with the scheduling resource of the DU
- at least one of the following processing methods can be adopted: if the Hard resource of the MT conflicts with the DU, the second node decides MT priority or DU priority by itself; if the DU is destroyed The DU can reschedule the data transmitted on the resources that have been destroyed; if the MT conflicts with the DU’s Soft resources, the MT takes precedence; if the MT conflicts with the DU resources, the DU takes precedence, and the second node reports which to the parent node The symbol was not received correctly.
- FIG. 10 is a schematic structural diagram of a data transmission device provided by an embodiment.
- the data transmission device provided in this embodiment is set at the first node.
- the data transmission device provided in this embodiment includes: a receiving module 101 , Is configured to receive timing-related information reported by the second node; the scheduling module 102 is configured to schedule data transmission of the second node according to the timing-related information, and the data transmission of the second node includes uplink data transmission or downlink data transmission.
- the data transmission device provided in this embodiment is used to implement the data transmission method of the embodiment shown in FIG. 4, and the implementation principles and technical effects of the data transmission device provided in this embodiment are similar and will not be repeated here.
- FIG. 11 is a schematic structural diagram of another data transmission device provided by an embodiment.
- the data transmission device provided in this embodiment is set at a second node.
- the data transmission device provided in this embodiment includes: a determination module 111, set to determine timing related information; sending module 112, set to report timing related information to the first node, the timing related information is used by the first node to schedule data transmission of the second node, and the data transmission of the second node includes uplink data transmission Or downlink data transmission.
- the data transmission device provided in this embodiment is used to implement the data transmission method of the embodiment shown in FIG. 5, and the implementation principles and technical effects of the data transmission device provided in this embodiment are similar, and will not be repeated here.
- FIG. 12 is a schematic structural diagram of another data transmission device provided by an embodiment.
- the data transmission device provided in this embodiment is set at the first node.
- the data transmission device provided in this embodiment includes: a receiving module 121, set to receive the guard interval reported by the second node; the scheduling module 122, set to schedule data transmission of the second node according to the guard interval, and the data transmission includes uplink data transmission or downlink data transmission.
- the data transmission device provided in this embodiment is used to implement the data transmission method of the embodiment shown in FIG. 6.
- the implementation principles and technical effects of the data transmission device provided in this embodiment are similar, and will not be repeated here.
- FIG. 13 is a schematic structural diagram of another data transmission device provided by an embodiment.
- the data transmission device provided in this embodiment is set at a second node.
- the data transmission device provided in this embodiment includes: a determination module 131, set to determine the guard interval; the sending module 132, set to report the guard interval to the first node, the guard interval is used by the first node to schedule data transmission of the second node, and the data transmission of the second node includes uplink data transmission or downlink data transmission.
- the data transmission device provided in this embodiment is used to implement the data transmission method of the embodiment shown in FIG. 7.
- the implementation principle and technical effect of the data transmission device provided in this embodiment are similar, and will not be repeated here.
- An embodiment of the present application also provides a data transmission system, which includes a first node and a second node, and may also include a third node.
- the connection relationship between the first node, the second node and the third node is shown in Figure 2.
- the first node includes the data transmission device as shown in the embodiment of FIG. 10.
- the second node includes the data transmission device shown in the embodiment of FIG. 11.
- An embodiment of the present application also provides a data transmission system, which includes a first node and a second node, and may also include a third node.
- the connection relationship between the first node, the second node and the third node is shown in Figure 2.
- the first node includes the data transmission device as shown in the embodiment of FIG. 12.
- the second node includes the data transmission device as shown in the embodiment of FIG. 13.
- FIG. 14 is a schematic structural diagram of a communication node provided by an embodiment.
- the communication node includes a processor 141, a memory 142, a transmitter 143, and a receiver 144; the number of processors 141 in the communication node can be It is one or more.
- One processor 141 is taken as an example in FIG. 14; the processor 141 and memory 142, the transmitter 143 and the receiver 144 in the communication node can be connected by bus or other methods. In FIG. Connect as an example.
- the memory 142 can be configured to store software programs, computer-executable programs, and modules, such as the program instructions/modules corresponding to the data transmission method in the embodiments of FIGS. 1-4 and 6 of this application (for example, , The receiving module 101 and the scheduling module 102 in the data transmission device or the receiving module 121 and the scheduling module 122 in the data transmission device).
- the processor 141 runs the software programs, instructions, and modules stored in the memory 142 to thereby implement at least one functional application and data processing of the communication node, that is, to implement the data transmission method of FIG. 4 or FIG. 6.
- the memory 142 may mainly include a program storage area and a data storage area.
- the program storage area may store an operating system and an application program required by at least one function; the data storage area may store data created according to the use of the communication node, and the like.
- the memory 142 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state storage devices.
- the transmitter 143 is a module or a combination of devices capable of transmitting radio frequency signals into space, for example, a combination of radio frequency transmitters, antennas, and other devices.
- the receiver 144 is a module or a combination of devices capable of receiving radio frequency signals from space, for example, a combination of radio frequency receivers, antennas, and other devices.
- FIG. 15 is a schematic structural diagram of another communication node provided by an embodiment.
- the communication node includes a processor 151, a memory 152, a transmitter 153, and a receiver 154; the number of processors 151 in the communication node There can be one or more.
- One processor 151 is taken as an example in FIG. 15; the processor 151 and the memory 152, the transmitter 153 and the receiver 154 in the communication node can be connected through a bus or other methods. In FIG. Take bus connection as an example.
- the memory 152 can be configured to store software programs, computer-executable programs, and modules, such as the program instructions corresponding to the data transmission method in the embodiments of Figures 1-3, Figure 5, and Figure 7 of this application.
- Modules for example, the determining module 111 and the sending module 112 in the data transmission device or the determining module 131 and the sending module 132 in the data transmission device).
- the processor 151 runs the software programs, instructions, and modules stored in the memory 152 to thereby implement at least one functional application and data processing of the communication node, that is, to implement the data transmission method of FIG. 5 or FIG. 7.
- the memory 152 may mainly include a program storage area and a data storage area.
- the program storage area may store an operating system and an application program required by at least one function; the data storage area may store data created according to the use of the communication node, and the like.
- the memory 152 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state storage devices.
- the transmitter 153 is a module or a combination of devices capable of transmitting radio frequency signals into space, for example, a combination of radio frequency transmitters, antennas, and other devices.
- the receiver 154 is a module or a combination of devices capable of receiving radio frequency signals from space, for example, a combination of radio frequency receivers, antennas, and other devices.
- An embodiment of the present application also provides a storage medium containing computer-executable instructions.
- a method for data transmission is performed. The method includes: a first node receives a report from a second node Timing related information; the first node schedules the data transmission of the second node according to the timing related information, and the data transmission of the second node includes uplink data transmission or downlink data transmission.
- the embodiment of the present application also provides a storage medium containing computer-executable instructions.
- the computer-executable instructions are used to execute a data transmission method when executed by a computer processor.
- the method includes: the second node determines timing-related information; The two nodes report timing related information to the first node.
- the timing related information is used by the first node to schedule data transmission of the second node, and the data transmission of the second node includes uplink data transmission or downlink data transmission.
- An embodiment of the present application also provides a storage medium containing computer-executable instructions.
- a method for data transmission is performed.
- the method includes: a first node receives a report from a second node Guard interval: The first node schedules the data transmission of the second node according to the guard interval, and the data transmission includes uplink data transmission or downlink data transmission.
- the embodiment of the present application also provides a storage medium containing computer-executable instructions.
- the computer-executable instructions are used to execute a data transmission method when executed by a computer processor.
- the method includes: a second node determines a guard interval; second The node reports a guard interval to the first node.
- the guard interval is used by the first node to schedule data transmission of the second node, and the data transmission of the second node includes uplink data transmission or downlink data transmission.
- user terminal encompasses any suitable type of wireless user equipment, such as mobile phones, portable data processing devices, portable web browsers, or vehicle-mounted mobile stations.
- Computer program instructions can be assembly instructions, Instruction Set Architecture (ISA) instructions, machine instructions, machine-related instructions, microcode, firmware instructions, status setting data, or written in any combination of one or more programming languages Source code or object code.
- ISA Instruction Set Architecture
- the block diagram of any logical flow in the drawings of the present application may represent program steps, or may represent interconnected logic circuits, modules, and functions, or may represent a combination of program steps and logic circuits, modules, and functions.
- the computer program can be stored on the memory.
- the memory can be of any type suitable for the local technical environment and can be implemented by any suitable data storage technology, such as but not limited to read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), optical Memory devices and systems (Digital Video Disc (DVD) or Compact Disc (CD)), etc.
- Computer-readable media may include non-transitory storage media.
- the data processor can be any type suitable for the local technical environment, such as but not limited to general-purpose computers, special-purpose computers, microprocessors, digital signal processors (Digital Signal Processors, DSP), application specific integrated circuits (ASICs) ), Field-Programmable Gate Array (FPGA) and processors based on multi-core processor architecture.
- general-purpose computers special-purpose computers
- microprocessors digital signal processors (Digital Signal Processors, DSP), application specific integrated circuits (ASICs) ), Field-Programmable Gate Array (FPGA) and processors based on multi-core processor architecture.
- DSP Digital Signal Processors
- ASICs application specific integrated circuits
- FPGA Field-Programmable Gate Array
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Abstract
Description
Claims (38)
- 一种数据传输方法,包括:第一节点接收定时相关信息;所述第一节点根据所述定时相关信息调度数据传输,所述数据传输包括上行数据传输或下行数据传输。
- 根据权利要求1所述的方法,其中,所述第一节点根据所述定时相关信息调度数据传输,包括:所述第一节点根据所述定时相关信息确定进行数据传输的不可用符号;所述第一节点在所述不可用符号上不调度所述数据传输,或者所述第一节点在所述不可用符号与所述数据传输的资源交叠的情况下,打掉与所述不可用符号交叠的符号。
- 根据权利要求2所述的方法,还包括:所述第一节点根据如下信息的至少一种确定进行所述数据传输的不可用符号:所述定时相关信息;定时误差限制;不可用符号余量;所述数据传输的方向;所述数据传输的子载波间隔;所述数据传输的符号时长;第二节点的时间资源类型。
- 根据权利要求1~3任一项所述的方法,其中,所述定时相关信息包括以下至少一项:第二节点的下行接收定时相对于所述第一节点的下行发送定时的时间偏移量;第二节点的上行发送定时相对于所述第二节点的下行接收定时的时间偏移量;第二节点的下行发送定时相对于所述第二节点的下行接收定时的时间偏移量;第二节点的上行接收定时相对于所述第二节点的下行发送定时的时间偏移量;第二节点的上行接收定时相对于所述第二节点的下行接收定时的时间偏移量;第二节点的上行发送定时相对于所述第二节点的下行发送定时的时间偏移量;第二节点的上行发送定时相对于所述第二节点的上行接收定时的时间偏移量;第二节点的收发转换时间;第二节点的发收转换时间。
- 根据权利要求1~3任一项所述的方法,其中:所述定时相关信息是以特定时间单位量化后的定时相关信息。
- 根据权利要求1~3任一项所述的方法,还包括:所述第一节点根据如下信息的至少一种调度所述数据传输:所述第一节点的定时信息;定时误差限制;不可用符号余量;所述数据传输的方向;所述数据传输的子载波间隔;所述数据传输的符号时长;第二节点的时间资源类型。
- 一种数据传输方法,包括:第二节点确定定时相关信息;所述第二节点向第一节点上报所述定时相关信息,所述定时相关信息用于所述第一节点调度所述第二节点的数据传输,所述第二节点的数据传输包括上行数据传输或下行数据传输。
- 根据权利要求7所述的方法,还包括:所述第二节点根据所述第一节点对所述第二节点的调度情况,调度第三节点的数据传输,所述第三节点的数据传输包括上行数据传输或下行数据传输。
- 根据权利要求8所述的方法,其中,所述第二节点根据所述第一节点对所述第二节点的调度情况,调度第三节点的数据传输,包括:所述第二节点根据所述第一节点对所述第二节点的调度情况,确定所述第三节点与所述第二节点进行数据传输的不可用符号;所述第二节点在所述不可用符号上不调度所述第三节点的数据传输,或者所述第二节点在所述不可用符号与所述第三节点的数据传输的资源交叠的情况下,打掉与所述不可用符号交叠的符号。
- 根据权利要求9所述的方法,其中,所述第二节点根据如下信息的至少一种确定所述第三节点与所述第二节点进行数据传输的不可用符号:所述第一节点对所述第二节点的调度情况;所述定时相关信息;定时误差限制;不可用符号余量;所述第二节点与所述第三节点之间的数据传输方向;所述第二节点的时间资源类型。
- 根据权利要求7~10任一项所述的方法,其中,所述定时相关信息包括以下至少一项:所述第二节点的下行接收定时相对于所述第一节点的下行发送定时的时间偏移量;所述第二节点的上行发送定时相对于所述第二节点的下行接收定时的时间偏移量;所述第二节点的下行发送定时相对于所述第二节点的下行接收定时的时间偏移量;所述第二节点的上行接收定时相对于所述第二节点的下行发送定时的时间偏移量;所述第二节点的上行接收定时相对于所述第二节点的下行接收定时的时间偏移量;所述第二节点的上行发送定时相对于所述第二节点的下行发送定时的时间偏移量;所述第二节点的上行发送定时相对于所述第二节点的上行接收定时的时间偏移量;所述第二节点的收发转换时间;所述第二节点的发收转换时间。
- 根据权利要求7~10任一项所述的方法,其中,所述定时相关信息是以特定时间单位量化后的定时相关信息。
- 根据权利要求8~10任一项所述的方法,还包括:所述第二节点根据如下信息的至少一种调度所述第三节点的数据传输:所述第一节点对所述第二节点的调度情况;所述定时相关信息;定时误差限制;不可用符号余量;所述第二节点与所述第三节点之间的数据传输方向;所述第二节点的时间资源类型。
- 一种数据传输方法,包括:第一节点接收保护间隔;所述第一节点根据所述保护间隔调度数据传输,所述数据传输包括上行数据传输或下行数据传输。
- 根据权利要求14所述的方法,其中,所述第一节点根据所述保护间隔调度数据传输,包括:所述第一节点在所述保护间隔上不调度所述数据传输;或者所述第一节点在所述保护间隔与所述数据传输的资源交叠时,打掉与所述保护间隔交叠的符号。
- 根据权利要求14或15所述的方法,其中,所述保护间隔包括以下至少一项:下行的保护间隔;上行的保护间隔;统一的保护间隔;参考子载波间隔。
- 根据权利要求14或15所述的方法,其中,所述保护间隔以特定时间单位为粒度。
- 根据权利要求14或15所述的方法,其中,所述保护间隔根据以下至 少一种信息获得:第二节点的下行接收定时;第二节点的下行发送定时;第二节点的上行发送定时;第二节点的上行接收定时;第二节点的上行发送定时相对所述第二节点的下行接收定时的时间提前量;定时提前补偿;定时提前命令指示的索引值;所述第一节点的上行接收定时相对于所述第一节点的下行发送定时的时间偏移量;所述第一节点的上行接收定时相对于所述第一节点的下行发送定时的时间偏移量的一半;定时误差限制;收发转换时间;发收转换时间;不可用符号余量;参考子载波间隔。
- 根据权利要求16所述的方法,其中,所述下行的保护间隔指所述第一节点和第二节点之间下行链路的保护间隔,包括以下至少之一:所述下行链路的每个时隙的开始位置的保护间隔,所述下行链路的每个时隙的结束位置的保护间隔,所述下行链路的至少一个连续时隙的开始位置的保护间隔,所述下行链路的至少一个连续时隙的结束位置的保护间隔,在所述第二节点的硬Hard资源或者指示为可用的软Soft资源之后所述下行链路的保护间隔,在所述第二节点的Hard资源或者指示为可用的Soft资源之前所述下行链路的保护间隔,在所述第二节点的Hard下行资源或者指示为可用的Soft下行资源之后所述下行链路的保护间隔,在所述第二节点的Hard下行资源或者指示为可用的Soft下行资源之前所述下行链路的保护间隔,在所述第二节点的Hard上行资源或者指示为可用的Soft上行资源之后所述下行链路的保护间隔,在所述第二节点的Hard上行资源或者指示为可用的Soft上行资源之前所述下行链路的保护间隔,在所述第二节点的Hard灵活资源或者指示为可用的Soft灵活资源之后所述下行链路的保 护间隔,在所述第二节点的Hard灵活资源或者指示为可用的Soft灵活资源之前所述下行链路的保护间隔。
- 根据权利要求16所述的方法,其中,所述上行的保护间隔指所述第一节点和第二节点之间上行链路的保护间隔,包括以下至少之一:所述上行链路的每个时隙的开始位置的保护间隔,所述上行链路的每个时隙的结束位置的保护间隔,所述上行链路的至少一个连续时隙的开始位置的保护间隔,所述上行链路的至少一个连续时隙的结束位置的保护间隔,在所述第二节点的Hard资源或者指示为可用的Soft资源之后所述上行链路的保护间隔,在所述第二节点的Hard资源或者指示为可用的Soft资源之前所述上行链路的保护间隔,在所述第二节点的Hard下行资源或者指示为可用的Soft下行资源之后所述上行链路的保护间隔,在所述第二节点的Hard下行资源或者指示为可用的Soft下行资源之前所述上行链路的保护间隔,在所述第二节点的Hard上行资源或者指示为可用的Soft上行资源之后所述上行链路的保护间隔,在所述第二节点的Hard上行资源或者指示为可用的Soft上行资源之前所述上行链路的保护间隔,在所述第二节点的Hard灵活资源或者指示为可用的Soft灵活资源之后所述上行链路的保护间隔,在所述第二节点的Hard灵活资源或者指示为可用的Soft灵活资源之前所述上行链路的保护间隔。
- 根据权利要求16所述的方法,其中,所述统一的保护间隔指所述第一节点和第二节点之间链路的保护间隔,包括以下至少之一:每个时隙的开始位置的保护间隔,每个时隙的结束位置的保护间隔,至少一个传输方向相同的连续时隙的开始位置的保护间隔,至少一个传输方向相同的连续时隙的结束位置的保护间隔,在所述第二节点的Hard资源或者指示为可用的Soft资源之后所述链路的保护间隔,在所述第二节点的Hard资源或者指示为可用的Soft资源之前所述链路的保护间隔,在所述第二节点的Hard下行资源或者指示为可用的Soft下行资源之后所述链路的保护间隔,在所述第二节点的Hard下行资源或者指示为可用的Soft下行资源之前所述链路的保护间隔,在所述第二节点的Hard上行资源或者指示为可用的Soft上行资源之后所述链路的保护间隔,在所述第二节点的Hard上行资源或者指示为可用的Soft上行资源之前所述链路的保护间隔,在所述第二节点的Hard灵活资源或者指示为可用的Soft灵活资源之后所述链路的保护间隔,在所述第二节点的Hard灵活资源或者指示为可用的Soft灵活资源之前所述链路的保护间隔;其中,所述链路包括上行链路和下行链路。
- 一种数据传输方法,包括:第二节点确定保护间隔;所述第二节点向第一节点上报所述保护间隔,所述保护间隔用于所述第一节点调度所述第二节点的数据传输,所述第二节点的数据传输包括上行数据传输或下行数据传输。
- 根据权利要求22所述的方法,还包括:所述第二节点根据所述第一节点对所述第二节点的调度情况,调度第三节点的数据传输,所述第三节点的数据传输包括上行数据传输或下行数据传输。
- 根据权利要求23所述的方法,其中,所述第二节点根据所述第一节点对所述第二节点的调度情况,调度第三节点的数据传输,包括:所述第二节点根据所述第一节点对所述第二节点的调度情况,确定所述第三节点与所述第二节点进行数据传输的不可用符号;所述第二节点在所述不可用符号上不调度所述第三节点的数据传输,或者所述第二节点在所述不可用符号与所述第三节点的数据传输的资源交叠时,打掉与所述不可用符号交叠的符号。
- 根据权利要求24所述的方法,其中,所述第二节点根据如下信息的至少一种确定所述第三节点与所述第二节点进行数据传输的不可用符号:所述第一节点对所述第二节点的调度情况;所述定时相关信息;定时误差限制;不可用符号余量;所述第二节点与所述第三节点之间的数据传输方向;所述第二节点的时间资源类型。
- 根据权利要求22~25任一项所述的方法,其中,所述保护间隔包括以下至少一项:下行的保护间隔;上行的保护间隔;统一的保护间隔;参考子载波间隔。
- 根据权利要求22~25任一项所述的方法,其中,所述保护间隔以特定时间单位为粒度。
- 根据权利要求22~25任一项所述的方法,其中,所述保护间隔根据以 下至少一种信息获得:所述第二节点的下行接收定时;所述第二节点的下行发送定时;所述第二节点的上行发送定时;所述第二节点的上行接收定时;所述第二节点的上行发送定时相对所述第二节点的下行接收定时的时间提前量;定时提前补偿;定时提前命令指示的索引值;所述第一节点的上行接收定时相对于所述第一节点的下行发送定时的时间偏移量;所述第一节点的上行接收定时相对于所述第一节点的下行发送定时的时间偏移量的一半;定时误差限制;收发转换时间;发收转换时间;不可用符号余量;参考子载波间隔。
- 根据权利要求26所述的方法,其中,所述下行的保护间隔指所述第一节点和所述第二节点之间下行链路的保护间隔,包括以下至少之一:所述下行链路的每个时隙的开始位置的保护间隔,所述下行链路的每个时隙的结束位置的保护间隔,所述下行链路的至少一个连续时隙的开始位置的保护间隔,所述下行链路的至少一个连续时隙的结束位置的保护间隔,在所述第二节点的硬Hard资源或者指示为可用的软Soft资源之后所述下行链路的保护间隔,在所述第二节点的Hard资源或者指示为可用的Soft资源之前所述下行链路的保护间隔,在所述第二节点的Hard下行资源或者指示为可用的Soft下行资源之后所述下行链路的保护间隔,在所述第二节点的Hard下行资源或者指示为可用的Soft下行资源之前所述下行链路的保护间隔,在所述第二节点的Hard上行资源或者指示为可用的Soft上行资源之后所述下行链路的保护间隔,在所述第二节点的Hard上行资源或者指示为可用的Soft上行资源之前所述下行链路的保护间隔,在所述第二节点的Hard灵活资源或者指示为可用的Soft灵活资源之后所述下行 链路的保护间隔,在所述第二节点的Hard灵活资源或者指示为可用的Soft灵活资源之前所述下行链路的保护间隔。
- 根据权利要求26所述的方法,其中,所述上行的保护间隔指所述第一节点和所述第二节点之间上行链路的保护间隔,包括以下至少之一:所述上行链路的每个时隙的开始位置的保护间隔,所述上行链路的每个时隙的结束位置的保护间隔,所述上行链路的至少一个连续时隙的开始位置的保护间隔,所述上行链路的至少一个连续时隙的结束位置的保护间隔,在所述第二节点的Hard资源或者指示为可用的Soft资源之后所述上行链路的保护间隔,在所述第二节点的Hard资源或者指示为可用的Soft资源之前所述上行链路的保护间隔,在所述第二节点的Hard下行资源或者指示为可用的Soft下行资源之后所述上行链路的保护间隔,在所述第二节点的Hard下行资源或者指示为可用的Soft下行资源之前所述上行链路的保护间隔,在所述第二节点的Hard上行资源或者指示为可用的Soft上行资源之后所述上行链路的保护间隔,在所述第二节点的Hard上行资源或者指示为可用的Soft上行资源之前所述上行链路的保护间隔,在所述第二节点的Hard灵活资源或者指示为可用的Soft灵活资源之后所述上行链路的保护间隔,在所述第二节点的Hard灵活资源或者指示为可用的Soft灵活资源之前所述上行链路的保护间隔。
- 根据权利要求26所述的方法,其中,所述统一的保护间隔指所述第一节点和所述第二节点之间链路的保护间隔,包括以下至少之一:每个时隙的开始位置的保护间隔,每个时隙的结束位置的保护间隔,至少一个传输方向相同的连续时隙的开始位置的保护间隔,至少一个传输方向相同的连续时隙的结束位置的保护间隔,在所述第二节点的Hard资源或者指示为可用的Soft资源之后所述链路的保护间隔,在所述第二节点的Hard资源或者指示为可用的Soft资源之前所述链路的保护间隔,在所述第二节点的Hard下行资源或者指示为可用的Soft下行资源之后所述链路的保护间隔,在所述第二节点的Hard下行资源或者指示为可用的Soft下行资源之前所述链路的保护间隔,在所述第二节点的Hard上行资源或者指示为可用的Soft上行资源之后所述链路的保护间隔,在所述第二节点的Hard上行资源或者指示为可用的Soft上行资源之前所述链路的保护间隔,在所述第二节点的Hard灵活资源或者指示为可用的Soft灵活资源之后所述链路的保护间隔,在所述第二节点的Hard灵活资源或者指示为可用的Soft灵活资源之前所述链路的保护间隔;其中,所述链路包括上行链路和下行链路。
- 根据权利要求22~25任一项所述的方法,还包括以下至少之一:所述第二节点不期望在所述保护间隔上接收所述第一节点发送的数据;所述第二节点不期望在所述保护间隔上向所述第一节点发送数据;所述第二节点不期望在所述保护间隔上被所述第一节点调度。
- 一种数据传输装置,设置于第一节点,包括:接收模块,设置为接收定时相关信息;调度模块,设置为根据所述定时相关信息调度数据传输,所述数据传输包括上行数据传输或下行数据传输。
- 一种数据传输装置,设置于第二节点,包括:确定模块,设置为确定定时相关信息;发送模块,设置为向第一节点上报所述定时相关信息,所述定时相关信息用于所述第一节点调度所述第二节点的数据传输,所述第二节点的数据传输包括上行数据传输或下行数据传输。
- 一种数据传输装置,设置于第一节点,包括:接收模块,设置为接收保护间隔;调度模块,设置为根据所述保护间隔调度数据传输,所述数据传输包括上行数据传输或下行数据传输。
- 一种数据传输装置,设置于第二节点,包括:确定模块,设置为确定保护间隔;发送模块,设置为向第一节点上报所述保护间隔,所述保护间隔用于所述第一节点调度所述第二节点的数据传输,所述第二节点的数据传输包括上行数据传输或下行数据传输。
- 一种数据传输系统,包括第一节点和第二节点;所述第一节点包括如权利要求33所述的数据传输装置;所述第二节点包括如权利要求34所述的数据传输装置。
- 一种数据传输系统,包括第一节点和第二节点;所述第一节点包括如权利要求35所述的数据传输装置;所述第二节点包括如权利要求36所述的数据传输装置。
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