WO2021233369A1 - Procédé de configuration de ressources et nœud de réseau - Google Patents

Procédé de configuration de ressources et nœud de réseau Download PDF

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Publication number
WO2021233369A1
WO2021233369A1 PCT/CN2021/094814 CN2021094814W WO2021233369A1 WO 2021233369 A1 WO2021233369 A1 WO 2021233369A1 CN 2021094814 W CN2021094814 W CN 2021094814W WO 2021233369 A1 WO2021233369 A1 WO 2021233369A1
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node
configuration information
reference signal
timing mode
timing
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PCT/CN2021/094814
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English (en)
Chinese (zh)
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刘凤威
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华为技术有限公司
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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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • IAB integrated access and backhaul
  • the relay node is called an IAB node (IAB node).
  • IAB nodes are classified according to their functions, and may include: mobile terminal (MT) functions and distributed unit (DU) functions.
  • the IAB node communicates with the upper-level node through the MT, and the link for the MT to communicate with the upper-level node (parent node) is called the parent backhaul link.
  • the IAB node communicates with subordinate nodes (child nodes) or user equipment (user equipment, UE) through the DU, and the link through which the DU communicates with the subordinate nodes or UE is called an access link.
  • the IAB node may need to perform joint signal processing of MT and DU.
  • the MT transceiver reference signal and the DU transceiver reference signal need to be orthogonalized.
  • the existing resource allocation method cannot guarantee the time-domain alignment of the reference signals of the MT and the DU, and cannot meet the orthogonalization requirements of the reference signals. Therefore, there is an urgent need for a resource allocation method to meet the above requirements.
  • the first node sends the uplink demodulation reference signal to the second node based on the first configuration information, and the second node is an upper node or a donor donor node of the first node.
  • the reference signal can be a demodulation reference signal (DMRS) in the LTE protocol or the NR protocol, or it can be another reference signal defined in the LTE protocol or the NR protocol or a future protocol for implementing the same or similar functions.
  • DMRS demodulation reference signal
  • PT-RS phase-tracking reference signals
  • CSI-RS channel-state information reference signals
  • SRS sounding reference signals
  • it may further include:
  • the first node receives second configuration information sent by the second node, where the second configuration information indicates a second time domain position at which the first node sends an uplink reference signal in a second timing mode, and the first node Two timing modes include timing mode 1.
  • the second configuration information may include: the symbol index of the start position of the uplink reference signal, or the offset of the start position of the uplink reference signal, or the indication information of the second timing mode, or,
  • the DMRS configuration type information or, the additional time domain location information of the DMRS, or, the DMRS sequence initialization parameters, or, the DMRS sequence type information, or, the pre-configured code division multiplexing group identifier, or, Unused code division multiplexing group identification.
  • Timing mode 1 is the basic uplink timing mode of the MT or UE in the IAB node.
  • the second node (upper IAB node or base station) adjusts the transmission advance of the MT of the first node (lower IAB node), so that the uplink frame of the first node and other UE or IAB node MT (the other The uplink frames of the UE being a child node of the second node are aligned on the uplink reception window of the second node.
  • the transmission advance may be timing advance (TA).
  • the first timing mode may include: timing mode 6, or timing mode 7.
  • Timing mode 7 is similar to timing mode 1.
  • the second node adjusts the transmission advance of the MT of the first node so that the DU uplink received signal in the second node is aligned with the MT downlink received signal at the symbol level.
  • the transmission advance may be TA+offset, and the offset may be configured by the second node or the third node, and the third node is an upper node (or a donor node) of the second node.
  • the embodiment of this application mainly considers that there is an offset between the timing mode 7 of the first node and the basic timing mode 1, but does not limit the timing alignment effect achieved by the timing mode 7 at the second node.
  • the second node can configure the first node to use timing mode 7, and align the uplink reception of the DU of the second node with the uplink transmission of the MT of the second node through an appropriate offset configuration, thereby realizing simple self-interference offset.
  • Timing mode 6 can realize simultaneous transmission of the MT uplink of the IAB node and the downlink DU of the IAB node. It should be noted that the first timing mode may also be other timing modes, such as: timing mode 2, timing mode 3, timing mode 4, or timing mode 5, etc., which are not limited here.
  • the first timing mode may include multiple timing modes to meet the orthogonalization requirements of the IAB node for sending and receiving reference signals in multiple timing mode scenarios.
  • the symbol index of the start position of the uplink reference signal for example, the symbol index of the start position of the uplink reference signal is "pos2" or "pos3".
  • the meaning is: when the symbol index of the start position of the uplink reference signal is "pos2", it means that the symbol index of the start position of the uplink reference signal is 2, that is, the symbol 2 of the uplink time slot carries the symbol of the first uplink reference signal.
  • the first configuration information includes the offset of the start position of the uplink reference signal, and the offset refers to the offset of the first time domain position relative to the DMRS time domain position broadcast by the base station. shift.
  • the base station for example, the second node
  • the base station configures the start symbols of the pre-DMRS of the uplink PUSCH and the downlink PDSCH for the UE or the IAB node MT through broadcast signaling (for example, MIB or SIB1).
  • the information element is "dmrs-TypeA-Position”
  • the value of the information element is "pos2" and "pos3", indicating that the index of the first preceding DMRS symbol is symbol 2 or symbol 3.
  • the first configuration information may indicate the offset of the first time domain position relative to the above-mentioned DMRS position, and the value may be [-2, -1, 0, 1, 2]. For example, when the broadcast signaling configuration starts When the position is symbol 2 "pos2" and the offset is configured as "-1", the first time domain position obtained is symbol 1 "pos1".
  • the first configuration information may include the symbol index of the start position of the uplink reference signal, and/or the offset of the start position of the uplink reference signal. Indicate the first time domain position through a variety of methods, which improves the flexibility of the solution.
  • the first configuration information further includes: indication information of the first timing mode.
  • the indication information of the first timing mode is used to indicate the first node, which timing mode is the first timing mode associated with the first configuration information.
  • the indication information of the first timing mode may be a certain field in the first configuration information. For example, when the indication information of the first timing mode is "XXX", the first timing mode is timing mode 7; The indication information of the first timing mode is “YYY”, and the first timing mode is timing mode 6.
  • the indication information of the first timing mode may also be a certain bit in the first configuration information. For example, when a certain bit in the first configuration information is "01", it indicates that the first timing mode is timing.
  • Mode 6 When a bit in the first configuration information is "00", it indicates that the first timing mode is timing mode 7.
  • the indication information of the first timing mode can not only explicitly indicate the first timing mode, but also implicitly indicate the first timing mode. For example, when the field "ZZZ" appears in the first configuration information, the first configuration information The associated first timing mode is timing mode 6; when the field "ZZZ" does not appear in the first configuration information, the first timing mode associated with the first configuration information is timing mode 7.
  • the first configuration information may include indication information of the first timing mode.
  • the indication information of the first timing mode can be implemented in a variety of ways, which improves the implementation flexibility of the solution.
  • the DMRS configuration type information may be configuration type 1 (configuration type 1) or configuration type 2 (configuration type 2).
  • configuration type 1 For a single-symbol DMRS design, that is, the DMRS port spans one symbol in the time domain.
  • the resource element (RE) in the symbol can be divided into two groups by frequency domain position.
  • DMRS configuration type 1 is marked as 0 and 1.
  • a set of REs, each group of REs are arranged in a comb shape in the frequency domain.
  • the two groups of REs are called code division multiplexing group 0 (CDM group 0) and code division multiplexing group 1 (CDM group 1), respectively.
  • each CDM group can multiplex two DMRS ports through code division.
  • the DMRS frequency domain pattern in one RB can be multiplexed with 4 DMRS ports, such as ports 1000, 1001, 1002, and 1003.
  • DMRS ports belonging to different CDM groups are orthogonalized by frequency division multiplexing, while those belonging to the same CDM group are orthogonalized by (frequency domain) code division.
  • the DMRS in one RB can multiplex 6 DMRS ports, which are respectively denoted as ports 1000, 1001, 1002, 1003, 1004, and 1005.
  • DMRS ports belonging to different CDM groups are orthogonalized by frequency division multiplexing, while those belonging to the same CDM group are orthogonalized by (frequency domain) code division.
  • time domain orthogonality can be further introduced Cover code (orthogonal cover code, OCC) ⁇ 1, 1 ⁇ and ⁇ 1, -1 ⁇ .
  • OCC orthogonal cover code
  • additional DMRS can be added.
  • the first configuration information is applicable to the pre-DMRS of NR, and it is also applicable to the case of pre-DMRS plus additional DMRS.
  • the time domain location information of the additional DMRS instructs the first node to send the additional DMRS at the designated time domain location.
  • the first configuration information may configure a single-symbol DMRS, a dual-symbol DMRS, or a multi-symbol DMRS, which is not limited here.
  • the DMRS sequence can be a pseudo-random sequence, such as a "Gold sequence", a "ZC sequence", or a computer search sequence.
  • the sequence type of the UE or IAB node MT can be configured by the base station or superior node, or it can be implicitly inferred by the UE or IAB node based on information such as waveform and channel type.
  • the DMRS sequence initialization parameters When the DMRS adopts a pseudo-random sequence, such as a "Gold sequence", it needs to generate a local sequence based on the initial parameters.
  • the initialization parameters may be generated by the cell ID or configured by the base station.
  • the pre-configured code division multiplexing group identifier indicates that the upper-level node only schedules the ports in the one or more groups of code division multiplexing groups.
  • the value is determined by the DMRS configuration type. For example, for DMRS configuration type 1, the pre-configured code division multiplexing group can be one or two of 0 and 1, while for DMRS configuration type 2, the pre-configured code division multiplexing group can be One, two or three of 0, 1, and 2;
  • the unused code division multiplexing group identifier also called the reserved code division multiplexing group identifier, indicates that the upper-level node will not schedule the ports in the one or more groups of code division multiplexing groups.
  • the value is determined by the DMRS configuration type. For example, for DMRS configuration type 1, the unused code division multiplexing group can be one of 0 and 1, while for DMRS configuration type 2, the pre-configured code division multiplexing group can be 0. One or both of 1, and 2.
  • the ID of the code division multiplexing group not used by the first node can also be derived from the pre-configured code division multiplexing group ID. For example, when the DMRS configuration type is 1, the pre-configured code division multiplexing group ID is 0.
  • the code division multiplexing group identifier used is 1.
  • the first node determines the usable CMD group ID based on the unused code division multiplexing group ID, and implements the DMRS port orthogonalization through these usable code division multiplexing group IDs.
  • the upper-level node does not map the data modulation symbols at the time domain position of the unused CDM group, so as to ensure that the first node can achieve the orthogonalization of the MT and DU reference signals through reasonable DU scheduling.
  • the first node may always perform the DU scheduling reference signal indication in the code division multiplexing group reserved by the upper node.
  • the first configuration information may include various configuration information related to the DMRS.
  • the spectrum efficiency of the IAB node is improved, and the overall capacity of the IAB network is improved.
  • the link detection performance of the first node can also be improved.
  • the first node receives first indication information sent by the second node, where the first indication information is used to indicate the timing mode adopted by the first node. Specifically, the first indication information is used to instruct the first node to use the first timing mode in an explicit manner, and the current timing mode can also be estimated and determined through other existing parameters.
  • the first configuration information may be associated with multiple timing patterns at the same time, and the first node selects one timing pattern in the first configuration information based on the first indication information to send the uplink reference signal. For example: the first configuration information associates timing mode 6 and timing mode 7 at the same time, then the first indication information is "A" to indicate that the first node uses timing mode 6, or the first indication information is "B" to indicate the first node Use timing mode 7.
  • the first indication information may be carried in independent signaling (independent of the first configuration information). For example: MAC CE used for timing mode indication, Downlink Control Information (DCI) scheduling, etc. Then, the first node determines that the adopted timing mode is the first timing mode based on the first indication information.
  • the first indication information may be a certain field. For example, when the first indication information includes the field "mode7”, it indicates that the first node uses timing mode 7; when the first indication information includes the field "mode7", mode6", then this instructs the first node to use timing mode 6.
  • the indication information of the first timing mode may also be a bit. For example, when a bit in the first configuration information is "01", it instructs the first node to use timing mode 6; when the first configuration information is A bit of "00" indicates that the first node uses timing mode 7.
  • the first node determines which one to use based on the first indication information
  • the timing mode is timing mode 6.
  • the first node determines that the adopted timing mode is timing mode 1 based on the first indication information.
  • a field or bit that plays an indication function may be referred to as the first parameter.
  • the first indication information includes the field "mode7”, it indicates that the first node uses timing mode 7. At this time, the first parameter is the field "mode7".
  • the first parameter is the bit "01";
  • the first node uses the first configuration information to send an uplink reference signal; when the first indication information indicates the second timing mode, the first node Sending the uplink reference signal by using the second configuration information.
  • the first indication information can be implemented in a variety of ways, so as to improve the implementation flexibility of the solution.
  • the second node sends the first indication information to the first node, so that the first node can select a different timing mode to send the uplink reference signal under the instruction of the second node.
  • the link detection performance of the first node can also be improved.
  • the first transmission mode parameter in the transmission mode parameter set is "1"
  • the first transmission mode parameter is associated with the timing mode 6 in the first timing mode
  • the first transmission mode parameter is "2"
  • the first transmission mode parameter "2" is associated with the timing mode 7 in the first timing mode
  • the second transmission mode parameter is "0"
  • the second transmission mode parameter "0" is related to the timing mode in the second timing mode. 1Associate.
  • the transmission mode parameter set can also be realized through a set of functions, for example: the second node configures the first node with a set of functions for the transmission mode parameter set, and this set of functions is called the first function . After the first node is configured with the first function, the first parameter from the second node is input to the first function. The output value of the first function obtained is called the transmission mode parameter, and different transmission mode parameters are associated with different timing modes. The first node determines the timing mode adopted by the first node based on the output value of the first function.
  • a field or bit that plays an indication function may be referred to as the first parameter.
  • the first indication information includes the field "mode7”, it indicates that the first node uses timing mode 7. At this time, the first parameter is the field "mode7".
  • the first parameter is the bit "01”.
  • the second node may also configure the transmission mode parameter set to the first node and send the first indication information, so that the first node can select a different timing mode to send the uplink reference signal under the instruction of the second node .
  • the method before the first node receives the first configuration information sent by the second node, the method further includes:
  • the first node sends a configuration information request to the second node, where the configuration information request is used to request the second node to configure an orthogonalized port for the first node.
  • the first node is configured by the second node with a first port set, the first port set includes a port set or a reserved port set, and the ports in the first port set are orthogonalized.
  • the first node When the first node sends the uplink reference signal to the second node based on the first configuration information, in order to achieve port orthogonalization, the first node needs to send a configuration information request to the second node.
  • the configuration information request is used to request the second node to be the first node.
  • One node is configured with orthogonalized ports.
  • the orthogonalized port may be a set of ports, which is called a first port set, and the first port set may be one or more ports.
  • the first port set includes: all ports included in code division multiplexing group 0 or 1.
  • the first port set includes a port set or a reserved port set.
  • the ports included in the port set are ports that can be used by the first node
  • the ports included in the reserved port set are ports that cannot be used by the first node.
  • the configured first port set is a port set
  • the first node sends the uplink reference signal based on the port set.
  • a reserved port set is configured in the configured first port set
  • the first node selects other ports except the reserved port set to send the uplink reference signal based on the reserved port set, and the other ports are orthogonalized Port.
  • the first node may also send a configuration information request to the second node, so that the second node configures the first port set to the first node, and the first port set includes orthogonalized ports.
  • the transmission mode parameter set, and the first indication information is sent, so that the first node can select a different timing mode to send the uplink reference signal under the instruction of the second node.
  • the first configuration information is carried in unicast signaling, for example: radio resource control (RRC) signaling, or media access control Sublayer control element signaling (media access control control element, MAC CE).
  • RRC radio resource control
  • MAC CE media access control Sublayer control element signaling
  • the first configuration information may also be carried in other high-level signaling, which is not limited here;
  • the second configuration information is carried in broadcast signaling.
  • the second configuration information is carried in MIB information or SIB1 information.
  • the second configuration information may also be carried in other high-level signaling, which is not limited here.
  • an embodiment of the present application proposes a resource allocation method, including:
  • the second node sends first configuration information to the first node, the first configuration information is associated with the first timing pattern of the mobile terminal MT of the first node, and the first configuration information instructs the first node to send uplink
  • the first time domain position of the reference signal the second node is an upper node or a host donor node of the first node;
  • the second node receives an uplink reference signal sent by the first node, where the uplink reference signal is an uplink reference signal sent by the first node to the second node based on the first configuration information.
  • the reference signal can be a demodulation reference signal (DMRS) in the LTE protocol or the NR protocol, or it can be another reference signal defined in the LTE protocol or the NR protocol or a future protocol for implementing the same or similar functions.
  • DMRS demodulation reference signal
  • PT-RS phase-tracking reference signals
  • CSI-RS channel-state information reference signals
  • Sounding reference signals Sounding reference signals
  • the second node sends first configuration information to the first node, and the second node receives the uplink reference signal sent by the first node.
  • the uplink reference signal is that the first node is based on the first configuration information.
  • the second node is an upper node or host node of the first node.
  • the first configuration information is associated with the first timing mode of the mobile terminal MT of the first node to meet the orthogonalization requirements of the IAB node for sending and receiving reference signals in the new timing mode scenario. In turn, the spectrum efficiency of the IAB node is improved, and the overall capacity of the IAB network is improved.
  • the second node sends second configuration information to the first node, where the second configuration information indicates the second time domain position at which the first node sends the uplink reference signal in the second timing mode, and the second The timing mode includes timing mode 1.
  • the second timing mode includes timing mode 1.
  • the second configuration information may include: the symbol index of the start position of the uplink reference signal, or the offset of the start position of the uplink reference signal, or the indication information of the second timing mode, or, The DMRS configuration type information, or, the additional time domain location information of the DMRS, or, the DMRS sequence initialization parameters, or, the DMRS sequence type information, or, the pre-configured code division multiplexing group identifier, or, Unused code division multiplexing group identification.
  • the second node sends the first configuration information and the second configuration information to the first node.
  • the first node sends an uplink reference signal to the second node based on the first configuration information or based on the second configuration information, where the second node is an upper-level node of the first node.
  • the first configuration information is associated with the first timing pattern of the mobile terminal MT of the first node.
  • the second configuration information is associated with the second timing pattern of the MT of the first node.
  • the second timing mode may be timing mode 1.
  • the first node can use different configuration information to send uplink reference signals to the second node. These different configuration information are respectively associated with different timing modes to meet the orthogonalization requirements of IAB nodes for sending and receiving reference signals in the new timing mode scenario. . In turn, the spectrum efficiency of the IAB node is improved, and the overall capacity of the IAB network is improved.
  • the first timing mode includes: timing mode 6 or timing mode 7.
  • Timing mode 7 is similar to timing mode 1.
  • the second node adjusts the transmission advance of the MT of the first node so that the DU uplink received signal in the second node is aligned with the MT downlink received signal at the symbol level.
  • the transmission advance may be TA+offset, and the offset may be configured by the second node or the third node, and the third node is an upper node (or a donor node) of the second node.
  • the embodiment of the present application mainly considers that there is an offset between the timing mode 7 of the first node and the basic timing mode 1, but does not limit the timing alignment effect achieved by the timing mode 7 at the second node.
  • the second node can configure the first node to use timing mode 7, and align the uplink reception of the DU of the second node with the uplink transmission of the MT of the second node through an appropriate offset configuration, thereby realizing simple self-interference offset.
  • Timing mode 6 can realize simultaneous transmission of the MT uplink of the IAB node and the downlink DU of the IAB node. It should be noted that the first timing mode may also be other timing modes, such as: timing mode 2, timing mode 3, timing mode 4, or timing mode 5, etc., which are not limited here.
  • the first timing mode may include multiple timing modes to meet the orthogonalization requirements of the IAB node for sending and receiving reference signals in multiple timing mode scenarios.
  • the first configuration information includes: the symbol index of the start position of the uplink reference signal, or the offset of the start position of the uplink reference signal Shift.
  • the symbol index of the start position of the uplink reference signal for example, the symbol index of the start position of the uplink reference signal is "pos2" or "pos3".
  • the meaning is: when the symbol index of the start position of the uplink reference signal is "pos2", it means that the symbol index of the start position of the uplink reference signal is 2, that is, the symbol 2 of the uplink time slot carries the symbol of the first uplink reference signal.
  • the first configuration information includes the offset of the start position of the uplink reference signal, and the offset refers to the offset of the first time domain position relative to the DMRS time domain position broadcast by the base station. shift.
  • the base station for example, the second node
  • the base station configures the start symbols of the pre-DMRS of the uplink PUSCH and the downlink PDSCH for the UE or the IAB node MT through broadcast signaling (for example, MIB or SIB1).
  • the information element is "dmrs-TypeA-Position”
  • the value of the information element is "pos2" and "pos3", indicating that the index of the first preceding DMRS symbol is symbol 2 or symbol 3.
  • the first configuration information may indicate the offset of the first time domain position relative to the above-mentioned DMRS position, and the value may be [-2, -1, 0, 1, 2]. For example, when the broadcast signaling configuration starts When the position is symbol 2 "pos2" and the offset is configured as "-1", the first time domain position obtained is symbol 1 "pos1".
  • the first configuration information may include the symbol index of the start position of the uplink reference signal, and/or the offset of the start position of the uplink reference signal. Indicate the first time domain position through a variety of methods, which improves the flexibility of the solution.
  • the first configuration information further includes: indication information of the first timing mode.
  • the indication information of the first timing mode is used to indicate to the first node what timing mode the first timing mode associated with the first configuration information is.
  • the indication information of the first timing mode may be a certain field in the first configuration information. For example, when the indication information of the first timing mode is "XXX", the first timing mode is timing mode 7; The indication information of the first timing mode is “YYY”, and the first timing mode is timing mode 6.
  • the indication information of the first timing mode may also be a certain bit in the first configuration information. For example, when a certain bit in the first configuration information is "01", it indicates that the first timing mode is timing.
  • Mode 6 When a bit in the first configuration information is "00", it indicates that the first timing mode is timing mode 7.
  • the indication information of the first timing mode can not only explicitly indicate the first timing mode, but also implicitly indicate the first timing mode. For example, when the field "ZZZ" appears in the first configuration information, the first configuration information The associated first timing mode is timing mode 6; when the field "ZZZ" does not appear in the first configuration information, the first timing mode associated with the first configuration information is timing mode 7.
  • the first configuration information may include indication information of the first timing mode.
  • the indication information of the first timing mode can be implemented in a variety of ways, which improves the implementation flexibility of the solution.
  • the first configuration information when the uplink reference signal is a demodulation reference signal DMRS, the first configuration information further includes one or more of the following information: The DMRS configuration type information, additional time domain location information of the DMRS, the DMRS sequence initialization parameters, the DMRS sequence type information, the pre-configured code division multiplexing group identifier, and the unused code division multiplexing group identifier.
  • the DMRS configuration type information may be configuration type 1 (configuration type 1) or configuration type 2 (configuration type 2).
  • configuration type 1 For a single-symbol DMRS design, that is, the DMRS port spans one symbol in the time domain.
  • the resource element (RE) in the symbol can be divided into two groups by frequency domain position.
  • DMRS configuration type 1 is marked as 0 and 1.
  • a set of REs, each group of REs are arranged in a comb shape in the frequency domain.
  • the two groups of REs are called code division multiplexing group 0 (CDM group 0) and code division multiplexing group 1 (CDM group 1), respectively.
  • each CDM group can multiplex two DMRS ports through code division.
  • the DMRS frequency domain pattern in one RB can be multiplexed with 4 DMRS ports, such as ports 1000, 1001, 1002, and 1003.
  • DMRS ports belonging to different CDM groups are orthogonalized by frequency division multiplexing, while those belonging to the same CDM group are orthogonalized by (frequency domain) code division.
  • DMRS configuration type 2 (DMRS configuration type 2): First, for a single-symbol DMRS design, the REs in the symbol can be divided into three groups by frequency domain position, that is, the DMRS configuration type 2 in Figure 3 is marked as 0, 1, and 2. RE collection, each group of REs are adjacent to each other in the frequency domain. In the protocol, they are called code division multiplexing group 0 (CDM group 0), code division multiplexing group 1 (CDM group 1) and code division multiplexing. Group 2 (CDM group 2). In the current protocol, each CDM group can multiplex two DMRS ports through code division.
  • the DMRS in one RB can multiplex 6 DMRS ports, which are respectively denoted as ports 1000, 1001, 1002, 1003, 1004, and 1005.
  • DMRS ports belonging to different CDM groups are orthogonalized by frequency division multiplexing, while those belonging to the same CDM group are orthogonalized by (frequency domain) code division.
  • time domain orthogonality can be further introduced Cover code (orthogonal cover code, OCC) ⁇ 1, 1 ⁇ and ⁇ 1, -1 ⁇ .
  • OCC orthogonal cover code
  • additional DMRS can be added.
  • the first configuration information is applicable to the pre-DMRS of NR, and it is also applicable to the case of pre-DMRS plus additional DMRS.
  • the time domain location information of the additional DMRS instructs the first node to send the additional DMRS at the designated time domain location.
  • the first configuration information may configure a single-symbol DMRS, a dual-symbol DMRS, or a multi-symbol DMRS, which is not limited here.
  • the DMRS sequence can be a pseudo-random sequence, such as a "Gold sequence", a "ZC sequence", or a computer search sequence.
  • the sequence type of the UE or IAB node MT can be configured by the base station or superior node, or it can be implicitly inferred by the UE or IAB node based on information such as waveform and channel type.
  • the DMRS sequence initialization parameters When the DMRS adopts a pseudo-random sequence, such as a "Gold sequence", it needs to generate a local sequence based on the initial parameters.
  • the initialization parameters may be generated by the cell ID or configured by the base station.
  • the pre-configured code division multiplexing group identifier indicates that the upper-level node only schedules the ports in the one or more groups of code division multiplexing groups.
  • the value is determined by the DMRS configuration type. For example, for DMRS configuration type 1, the pre-configured code division multiplexing group can be one or two of 0 and 1, while for DMRS configuration type 2, the pre-configured code division multiplexing group can be One, two or three of 0, 1, and 2;
  • the unused code division multiplexing group identifier also called the reserved code division multiplexing group identifier, indicates that the upper-level node will not schedule the ports in the one or more groups of code division multiplexing groups.
  • the value is determined by the DMRS configuration type. For example, for DMRS configuration type 1, the unused code division multiplexing group can be one of 0 and 1, while for DMRS configuration type 2, the pre-configured code division multiplexing group can be 0. One or both of 1, and 2.
  • the ID of the code division multiplexing group not used by the first node can also be derived from the pre-configured code division multiplexing group ID. For example, when the DMRS configuration type is 1, the pre-configured code division multiplexing group ID is 0.
  • the code division multiplexing group identifier used is 1.
  • the first node determines the usable CMD group ID based on the unused code division multiplexing group ID, and implements the DMRS port orthogonalization through these usable code division multiplexing group IDs.
  • the upper-level node does not map the data modulation symbols at the time domain position of the unused CDM group, so as to ensure that the first node can achieve the orthogonalization of the MT and DU reference signals through reasonable DU scheduling.
  • the first node may always perform the DU scheduling reference signal indication in the code division multiplexing group reserved by the upper node.
  • the first configuration information may include various configuration information related to the DMRS.
  • the spectrum efficiency of the IAB node is improved, and the overall capacity of the IAB network is improved.
  • the link detection performance of the first node can also be improved.
  • the method further includes: the first indication information is used to indicate the timing mode adopted by the first node.
  • the first indication information is used to instruct the first node to use the first timing mode in an explicit manner, and the current timing mode can also be estimated and determined through other existing parameters.
  • the first configuration information may be associated with multiple timing patterns at the same time, and the first node selects one timing pattern in the first configuration information based on the first indication information to send the uplink reference signal. For example: the first configuration information associates timing mode 6 and timing mode 7 at the same time, then the first indication information is "A" to indicate that the first node uses timing mode 6, or the first indication information is "B" to indicate the first node Use timing mode 7.
  • the first indication information may be carried in independent signaling (independent of the first configuration information). For example: MAC CE used for timing mode indication, Downlink Control Information (DCI) scheduling, etc. Then, the first node determines that the adopted timing mode is the first timing mode based on the first indication information.
  • the first indication information may be a certain field. For example, when the first indication information includes the field "mode7”, it instructs the first node to use timing mode 7; when the first indication information includes the field "mode7", mode6", then this instructs the first node to use timing mode 6.
  • the indication information of the first timing mode may also be a bit. For example, when a bit in the first configuration information is "01", it instructs the first node to use timing mode 6; when the first configuration information is A bit of "00" indicates that the first node uses timing mode 7.
  • the first node determines the adopted mode based on the first indication information
  • the timing mode is timing mode 6.
  • the first node determines that the adopted timing mode is timing mode 1 based on the first indication information.
  • a field or bit that plays an indication function may be referred to as the first parameter.
  • the first indication information includes the field "mode7”, it indicates that the first node uses timing mode 7. At this time, the first parameter is the field "mode7".
  • the first parameter is the bit "01";
  • the first node uses the first configuration information to send an uplink reference signal; when the first indication information indicates the second timing mode, the first node Sending the uplink reference signal by using the second configuration information.
  • the first indication information can be implemented in a variety of ways, so as to improve the implementation flexibility of the solution.
  • the second node sends the first indication information to the first node, so that the first node can select a different timing mode to send the uplink reference signal under the instruction of the second node.
  • the link detection performance of the first node can also be improved.
  • the second node configures a transmission mode parameter set to the first node, wherein the transmission mode parameter set is configured by the second node, and the transmission mode parameter set includes the first transmission mode parameter, and/or the first transmission mode parameter set.
  • Two transmission mode parameters the first transmission mode parameter is associated with the first timing mode
  • the second transmission mode parameter is associated with the second timing mode.
  • the transmission mode parameter set is configured by the second node, the transmission mode parameter set includes a first transmission mode parameter and/or a second transmission mode parameter, and the first transmission mode parameter and the first timing Mode association, and the second transmission mode parameter is associated with the second timing mode.
  • the first transmission mode parameter in the transmission mode parameter set is "1"
  • the first transmission mode parameter is associated with the timing mode 6 in the first timing mode
  • the first transmission mode parameter is "2"
  • the first transmission mode parameter "2" is associated with the timing mode 7 in the first timing mode
  • the second transmission mode parameter is "0"
  • the second transmission mode parameter "0" is related to the timing mode in the second timing mode. 1Associate.
  • the transmission mode parameter set can also be realized through a set of functions, for example: the second node configures the first node with a set of functions for the transmission mode parameter set, and this set of functions is called the first function . After the first node is configured with the first function, the first parameter from the second node is input to the first function. The output value of the first function obtained is called the transmission mode parameter, and different transmission mode parameters are associated with different timing modes. The first node determines the timing mode adopted by the first node based on the output value of the first function.
  • the first indication information a field or bit that plays an indication function may be referred to as the first parameter.
  • the first indication information includes the field "mode7”, it indicates that the first node uses timing mode 7. At this time, the first parameter is the field "mode7".
  • the first parameter is the bit "01”.
  • the second node may also configure the transmission mode parameter set to the first node and send the first indication information, so that the first node can select a different timing mode to send the uplink reference signal under the instruction of the second node .
  • the method before the second node sends the first configuration information to the first node, the method further includes:
  • the second node receives a configuration information request sent by the first node, where the configuration information request is used to request the second node to configure an orthogonalized port for the first node; the second node is based on the According to the configuration information request, a first port set is configured to the first node, the first port set includes a port set or a reserved port set, and the ports in the first port set are orthogonalized.
  • the configuration information request is used to request the second node to configure an orthogonalized port for the first node.
  • the orthogonalized port may be a set of ports, which is called a first port set, and the first port set may be one or more ports.
  • the first port set includes: all ports included in code division multiplexing group 0 or 1.
  • the first port set includes a port set or a reserved port set.
  • the ports included in the port set are ports that can be used by the first node
  • the ports included in the reserved port set are ports that cannot be used by the first node.
  • the configured first port set is a port set
  • the first node sends the uplink reference signal based on the port set.
  • a reserved port set is configured in the configured first port set
  • the first node selects other ports except the reserved port set to send the uplink reference signal based on the reserved port set, and the other ports are orthogonalized Port.
  • the first node may also send a configuration information request to the second node, so that the second node configures the first port set to the first node, and the first port set includes orthogonalized ports.
  • the transmission mode parameter set, and the first indication information is sent, so that the first node can select a different timing mode to send the uplink reference signal under the instruction of the second node.
  • the first configuration information is carried in unicast signaling, for example: radio resource control (RRC) signaling, or media access control Sublayer control element signaling (media access control control element, MAC CE).
  • RRC radio resource control
  • MAC CE media access control Sublayer control element signaling
  • the first configuration information may also be carried in other high-level signaling, which is not limited here;
  • the second configuration information is carried in broadcast signaling.
  • the second configuration information is carried in MIB information or SIB1 information.
  • the second configuration information may also be carried in other high-level signaling, which is not limited here.
  • an embodiment of the present application provides a resource configuration method, which may include:
  • the first node receives third configuration information sent by the second node, where the third configuration information indicates that the first node receives the downlink reference signal sent by the second node at a third time domain location;
  • the first node receives the downlink reference signal sent by the second node based on the third configuration information, and the second node is an upper node or a host node of the first node.
  • the second node sends third configuration information to the first node, and the third configuration information is associated with the first downlink timing and/or the second downlink timing. So that the first node receives the downlink reference signal sent by the second node at the third time domain location based on the third configuration information. In this way, the orthogonalization requirements of IAB nodes for sending and receiving reference signals in multiple timing mode scenarios are met.
  • it may further include:
  • the first node receives fourth configuration information sent by the second node, where the fourth configuration information indicates that the first node receives the downlink reference signal sent by the second node at a fourth time domain position.
  • it may further include:
  • the first node receives the measurement value of the reference signal reported by the second node, where the measurement value of the reference signal is obtained by the second node by measuring the reference signal from the first node.
  • the third aspect may include:
  • the third configuration information is associated with the first downlink timing or the second downlink timing, the first downlink timing is determined by the first node based on the measurement value of the reference signal, and the second downlink timing is determined by the The first node is obtained based on the measured value and offset of the reference signal.
  • the third aspect may include:
  • the first node receives third indication information sent by the second node, where the third indication information is used to indicate which downlink timing the first node uses to receive the reference signal.
  • an embodiment of the present application provides a resource configuration method, which may include:
  • the second node sends third configuration information to the first node, where the third configuration information indicates that the first node receives the downlink reference signal sent by the second node at a third time domain location;
  • the second node sends a downlink reference signal to the first node, so that the first node receives the downlink reference signal sent by the second node based on the third configuration information, and the second node is the first node.
  • the second node sends third configuration information to the first node, and the third configuration information is associated with the first downlink timing and/or the second downlink timing. So that the first node receives the downlink reference signal sent by the second node at the third time domain location based on the third configuration information. In this way, the orthogonalization requirements of IAB nodes for sending and receiving reference signals in multiple timing mode scenarios are met.
  • it may further include:
  • the second node sends fourth configuration information to the first node, where the fourth configuration information indicates that the first node receives the downlink reference signal sent by the second node at a fourth time domain position.
  • it may further include:
  • the second node sends a measurement value of a reference signal to the first node, where the measurement value of the reference signal is obtained by the second node by measuring the reference signal from the first node.
  • the fourth aspect may include:
  • the third configuration information is associated with the first downlink timing or the second downlink timing, the first downlink timing is determined by the first node based on the measurement value of the reference signal, and the second downlink timing is determined by the The first node is obtained based on the measured value and offset of the reference signal.
  • the fourth aspect may include:
  • the second node sends third indication information to the first node, where the third indication information is used to indicate which downlink timing the first node uses to receive the reference signal.
  • an embodiment of the present application provides a network node, including: a processor and a transceiver connected to the processor;
  • the transceiver is configured to receive first configuration information sent by a second node, where the first configuration information is associated with a first timing pattern of a mobile terminal MT of the first node, and the first configuration information indicates the The first time domain position at which the first node sends the uplink reference signal;
  • the processor is configured to send an uplink reference signal to the second node based on the first configuration information, where the second node is an upper node or a host donor node of the first node.
  • the transceiver is further configured to receive second configuration information sent by the second node, where the second configuration information indicates the first The node sends the second time domain position of the uplink reference signal in the second timing mode, where the second timing mode includes timing mode 1.
  • the first timing mode includes: timing mode 6 or timing mode 7.
  • the first configuration information includes: the symbol index of the start position of the uplink reference signal, or the offset of the start position of the uplink reference signal Shift.
  • the first configuration information further includes: indication information of the first timing mode.
  • the first configuration information when the uplink reference signal is a demodulation reference signal DMRS, the first configuration information further includes one or more of the following information: The DMRS configuration type information, additional time domain location information of the DMRS, the DMRS sequence initialization parameters, the DMRS sequence type information, the pre-configured code division multiplexing group identifier, and the unused code division multiplexing group identifier.
  • the transceiver is further configured to receive first indication information sent by the second node, and the first indication information is used to indicate the The timing mode adopted by the first node;
  • the transceiver is further configured to use the first configuration information to send an uplink reference signal when the first indication information indicates a first timing mode;
  • the transceiver is further configured to use the second configuration information to send an uplink reference signal when the first indication information indicates a second timing mode.
  • the processor is further configured for the first node based on the transmission mode parameter set and the first parameter carried in the first indication information, Determine the timing mode used, wherein the transmission mode parameter set is configured by the second node, the transmission mode parameter set includes a first transmission mode parameter and/or a second transmission mode parameter, and the first transmission mode The parameter is associated with the first timing mode, and the second transmission mode parameter is associated with the second timing mode.
  • the transceiver is further configured to send a configuration information request to the second node, and the configuration information request is used to request the second node
  • An orthogonalized port is configured for the first node.
  • the processor is further configured to be configured by the second node with a first port set, and the first port set includes a port set or a preset Keep the port set, and the ports in the first port set are orthogonalized.
  • the first configuration information is carried in unicast signaling; the second configuration information is carried in broadcast signaling.
  • an embodiment of the present application provides a network node, including: a processor and a transceiver connected to the processor;
  • the processor is configured to send first configuration information to a first node, where the first configuration information is associated with a first timing pattern of a mobile terminal MT of the first node, and the first configuration information indicates the first A first time domain position at which a node sends an uplink reference signal, and the second node is an upper node or a host donor node of the first node;
  • the transceiver is configured to receive an uplink reference signal sent by the first node, where the uplink reference signal is an uplink reference signal sent by the first node to the second node based on the first configuration information.
  • the transceiver is further configured to send second configuration information to the first node, where the second configuration information indicates the first node
  • the second time domain position of the uplink reference signal is sent in the second timing mode, where the second timing mode includes timing mode 1.
  • the first timing mode includes: timing mode 6 or timing mode 7.
  • the first configuration information includes: the symbol index of the start position of the uplink reference signal, or the offset of the start position of the uplink reference signal Shift.
  • the first configuration information further includes: indication information of the first timing mode.
  • the first configuration information when the uplink reference signal is a demodulation reference signal DMRS, the first configuration information further includes one or more of the following information: The DMRS configuration type information, additional time domain location information of the DMRS, the DMRS sequence initialization parameters, the DMRS sequence type information, the pre-configured code division multiplexing group identifier, and the unused code division multiplexing group identifier.
  • the transceiver is further configured to send first indication information to the first node, where the first indication information is used to indicate the first node The timing mode used by a node.
  • the processor is further configured to configure a transmission mode parameter set by the second node to the first node, wherein the transmission mode parameter The set is configured by the second node, the transmission mode parameter set includes a first transmission mode parameter, and/or a second transmission mode parameter, the first transmission mode parameter is associated with the first timing mode, and the first transmission mode parameter is associated with the first timing mode.
  • the second transmission mode parameter is associated with the second timing mode.
  • the first indication information includes a first parameter, so that the first node determines the first parameter according to the first parameter and the transmission mode parameter set. The timing mode adopted by the first node.
  • the transceiver is further configured to receive a configuration information request sent by the first node, and the configuration information request is used to request the second The node configures an orthogonalized port for the first node.
  • the processor is further configured for the second node to configure a first port set to the first node based on the configuration information request,
  • the first port set includes a port set or a reserved port set, and the ports in the first port set are orthogonalized.
  • the first configuration information is carried in unicast signaling; the second configuration information is carried in broadcast signaling.
  • an embodiment of the present application provides a network node, including: a processor and a transceiver connected to the processor;
  • the transceiver is configured to receive third configuration information sent by a second node, where the third configuration information indicates that the first node receives a downlink reference signal sent by the second node at a third time domain location;
  • the processor is configured to receive, based on the third configuration information, the downlink reference signal sent by the second node by a first node, where the second node is an upper node or a host node of the first node.
  • it may further include:
  • the transceiver is further configured for the first node to receive fourth configuration information sent by the second node, where the fourth configuration information indicates that the first node receives the second node at a fourth time domain position Downlink reference signal sent.
  • it may further include:
  • the transceiver is further configured to send a reference signal to the second node
  • the transceiver is further configured to receive a measurement value of the reference signal reported by the second node, where the measurement value of the reference signal is obtained by the second node measuring the reference signal from the first node.
  • the seventh aspect may include:
  • the third configuration information is associated with the first downlink timing or the second downlink timing, the first downlink timing is determined by the first node based on the measurement value of the reference signal, and the second downlink timing is determined by the The first node is obtained based on the measured value and offset of the reference signal.
  • the seventh aspect may include:
  • the transceiver is further configured to receive third indication information sent by the second node, where the third indication information is used to indicate which downlink timing the first node uses to receive the reference signal.
  • an embodiment of the present application provides a network node, including: a processor and a transceiver connected to the processor;
  • the transceiver is configured to send third configuration information to a first node, where the third configuration information indicates that the first node receives a downlink reference signal sent by the second node at a third time domain position;
  • the transceiver is configured to send a downlink reference signal to the first node, so that the first node receives the downlink reference signal sent by the second node based on the third configuration information, and the second node is The upper node or host node of the first node.
  • it may further include:
  • the transceiver is further configured to send fourth configuration information to the first node, where the fourth configuration information indicates that the first node receives the downlink reference signal sent by the second node at a fourth time domain position.
  • it may further include:
  • the transceiver is further configured to receive a reference signal sent by the first node
  • the transceiver is further configured to send a measurement value of a reference signal to the first node, where the measurement value of the reference signal is obtained by the second node by measuring the reference signal from the first node.
  • the eighth aspect may include:
  • the third configuration information is associated with the first downlink timing or the second downlink timing, the first downlink timing is determined by the first node based on the measurement value of the reference signal, and the second downlink timing is determined by the The first node is obtained based on the measured value and offset of the reference signal.
  • the eighth aspect may include:
  • the transceiver is further configured to send third indication information to the first node, where the third indication information is used to indicate which downlink timing the first node uses to receive the reference signal.
  • an embodiment of the present application provides a resource configuration device, including:
  • the receiving module is configured to receive first configuration information sent by a second node, where the first configuration information is associated with a first timing pattern of a mobile terminal MT of the first node, and the first configuration information indicates the first The first time domain position at which the node sends the uplink reference signal;
  • the sending module is configured to send an uplink reference signal to the second node based on the first configuration information, and the second node is an upper node or a host donor node of the first node.
  • the receiving module is further configured to receive second configuration information sent by the second node, where the second configuration information indicates the first
  • the node sends the second time domain position of the uplink reference signal in the second timing mode, where the second timing mode includes timing mode 1.
  • the first timing mode includes: timing mode 6 or timing mode 7.
  • the first configuration information includes: the symbol index of the start position of the uplink reference signal, or the offset of the start position of the uplink reference signal Shift.
  • the first configuration information further includes: indication information of the first timing mode.
  • the first configuration information when the uplink reference signal is a demodulation reference signal DMRS, the first configuration information further includes one or more of the following information: The DMRS configuration type information, additional time-domain location information of the DMRS, the DMRS sequence initialization parameters, the DMRS sequence type information, the pre-configured code division multiplexing group identifier, and the unused code division multiplexing group identifier.
  • the receiving module is further configured to receive first indication information sent by the second node, where the first indication information is used to indicate the The timing mode adopted by the first node;
  • the receiving module is further configured to use the first configuration information to send an uplink reference signal when the first indication information indicates a first timing mode;
  • the receiving module is further configured to use the second configuration information to send an uplink reference signal when the first indication information indicates a second timing mode.
  • the processing module is further configured for the first node based on the transmission mode parameter set and the first parameter carried in the first indication information, Determine the timing mode used, wherein the transmission mode parameter set is configured by the second node, the transmission mode parameter set includes a first transmission mode parameter and/or a second transmission mode parameter, and the first transmission mode The parameter is associated with the first timing mode, and the second transmission mode parameter is associated with the second timing mode.
  • the sending module is further configured to send a configuration information request to the second node, and the configuration information request is used to request the second node
  • An orthogonalized port is configured for the first node.
  • the processing module is further configured to be configured by the second node with a first port set, and the first port set includes a port set or a preset Keep the port set, and the ports in the first port set are orthogonalized.
  • the first configuration information is carried in unicast signaling; the second configuration information is carried in broadcast signaling.
  • an embodiment of the present application provides a resource configuration device, including: a processing module and a receiving module connected to the processing module;
  • the sending module is configured to send first configuration information to a first node, where the first configuration information is associated with a first timing pattern of a mobile terminal MT of the first node, and the first configuration information indicates the first A first time domain position at which a node sends an uplink reference signal, and the second node is an upper node or a host donor node of the first node;
  • the receiving module is configured to receive an uplink reference signal sent by the first node, where the uplink reference signal is an uplink reference signal sent by the first node to the second node based on the first configuration information.
  • the sending module is further configured to send second configuration information to the first node, where the second configuration information indicates the first node
  • the second time domain position of the uplink reference signal is sent in the second timing mode, where the second timing mode includes timing mode 1.
  • the first timing mode includes: timing mode 6 or timing mode 7.
  • the first configuration information includes: the symbol index of the start position of the uplink reference signal, or the offset of the start position of the uplink reference signal Shift.
  • the first configuration information further includes: indication information of the first timing mode.
  • the first configuration information when the uplink reference signal is a demodulation reference signal DMRS, the first configuration information further includes one or more of the following information: The DMRS configuration type information, additional time domain location information of the DMRS, the DMRS sequence initialization parameters, the DMRS sequence type information, the pre-configured code division multiplexing group identifier, and the unused code division multiplexing group identifier.
  • the sending module is further configured to send first indication information to the first node, where the first indication information is used to indicate the first node The timing mode used by a node.
  • the processing module is further configured to configure a transmission mode parameter set by the second node to the first node, wherein the transmission mode parameter The set is configured by the second node, the transmission mode parameter set includes a first transmission mode parameter, and/or a second transmission mode parameter, the first transmission mode parameter is associated with the first timing mode, and the first transmission mode parameter is associated with the first timing mode.
  • the second transmission mode parameter is associated with the second timing mode.
  • the first indication information includes a first parameter, so that the first node determines the first parameter according to the first parameter and the transmission mode parameter set.
  • the receiving module is further configured to receive a configuration information request sent by the first node, and the configuration information request is used to request the second The node configures an orthogonalized port for the first node.
  • the processing module is further configured for the second node to configure a first port set to the first node based on the configuration information request,
  • the first port set includes a port set or a reserved port set, and the ports in the first port set are orthogonalized.
  • the first configuration information is carried in unicast signaling; the second configuration information is carried in broadcast signaling.
  • an embodiment of the present application provides a resource configuration device, including:
  • the receiving module is configured to receive third configuration information sent by a second node, where the third configuration information indicates that the first node receives a downlink reference signal sent by the second node at a third time domain location;
  • the processing module is configured to receive the downlink reference signal sent by the second node by a first node based on the third configuration information, and the second node is an upper node or a host node of the first node.
  • the eleventh aspect may further include:
  • the receiving module is further configured to receive, by the first node, fourth configuration information sent by the second node, the fourth configuration information indicates that the first node receives the second node at a fourth time domain position Downlink reference signal sent.
  • the eleventh aspect may further include:
  • the sending module is further configured to send a reference signal to the second node
  • the receiving module is further configured to receive a measurement value of the reference signal reported by the second node, where the measurement value of the reference signal is obtained by the second node measuring the reference signal from the first node.
  • the eleventh aspect in a possible implementation manner of the eleventh aspect, it may include:
  • the third configuration information is associated with the first downlink timing or the second downlink timing, the first downlink timing is determined by the first node based on the measurement value of the reference signal, and the second downlink timing is determined by the The first node is obtained based on the measured value and offset of the reference signal.
  • the eleventh aspect in a possible implementation manner of the eleventh aspect, it may include:
  • the receiving module is further configured to receive third indication information sent by the second node, where the third indication information is used to indicate which downlink timing the first node uses to receive the reference signal.
  • an embodiment of the present application provides a resource configuration device, including:
  • the sending module is configured to send third configuration information to a first node, where the third configuration information indicates that the first node receives a downlink reference signal sent by the second node at a third time domain location;
  • the sending module is configured to send a downlink reference signal to the first node, so that the first node receives the downlink reference signal sent by the second node based on the third configuration information, and the second node is The upper node or host node of the first node.
  • twelfth aspect in a possible implementation manner of the twelfth aspect, it may further include:
  • the sending module is further configured to send fourth configuration information to the first node, where the fourth configuration information indicates that the first node receives the downlink reference signal sent by the second node at a fourth time domain position.
  • twelfth aspect in a possible implementation manner of the twelfth aspect, it may further include:
  • the receiving module is configured to receive a reference signal sent by the first node
  • the sending module is further configured to send a measurement value of a reference signal to the first node, where the measurement value of the reference signal is obtained by the second node by measuring the reference signal from the first node.
  • a possible implementation of the twelfth aspect may include:
  • the third configuration information is associated with the first downlink timing or the second downlink timing, the first downlink timing is determined by the first node based on the measurement value of the reference signal, and the second downlink timing is determined by the The first node is obtained based on the measured value and offset of the reference signal.
  • a possible implementation of the twelfth aspect may include:
  • the sending module is further configured to send third indication information to the first node, where the third indication information is used to indicate which downlink timing the first node uses to receive the reference signal.
  • an embodiment of the present application provides a communication device.
  • the communication device may include entities such as a network device or a chip.
  • the communication device includes: a processor and a memory; the memory is used to store instructions; By executing the instructions in the memory, the communication device executes the method according to any one of the foregoing first aspect, second aspect, third aspect, or fourth aspect.
  • the embodiments of the present application provide a computer-readable storage medium storing one or more computer-executable instructions.
  • the processor executes the first aspect or the first aspect described above. Any one of the possible implementation manners of the second aspect, the third aspect, or the fourth aspect.
  • embodiments of the present application provide a computer program product (or computer program) that stores one or more computer-executable instructions.
  • the processor executes the aforementioned first One aspect or the second aspect, the third aspect, or any one of the possible implementation manners of the fourth aspect.
  • this application provides a chip system that includes a processor and is used to support a computer device to implement the functions involved in the above aspects.
  • the chip system further includes a memory for storing necessary program instructions and data for the computer equipment.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • FIG. 1 is a schematic diagram of a communication system provided by an embodiment of this application.
  • Figure 2 is a schematic diagram of the hardware structure of a network device according to an embodiment of the present application.
  • FIG. 3 is a schematic diagram of DMRS under different configuration types in an embodiment of the application.
  • FIG. 4a is a schematic diagram of timing mode 1 and timing mode 7 involved in an embodiment of this application;
  • 4b is a schematic diagram of timing mode 1 and timing mode 7 involved in an embodiment of this application at the transmitting end;
  • 4c is a schematic diagram of timing mode 1 and timing mode 6 involved in an embodiment of this application;
  • FIG. 5a is a schematic diagram of an embodiment of a resource configuration method in an embodiment of this application.
  • FIG. 5b is a schematic diagram of a time domain position of a resource configuration method in an embodiment of this application.
  • FIG. 5c is a schematic diagram of another time domain position of a resource configuration method in an embodiment of this application.
  • FIG. 6 is a schematic diagram of an embodiment of yet another resource configuration method proposed in an embodiment of this application.
  • Fig. 7a is a schematic diagram of an embodiment of yet another resource configuration method proposed in an embodiment of the application.
  • FIG. 7b is a schematic diagram of an embodiment of yet another resource configuration method proposed in an embodiment of this application.
  • FIG. 8 is a schematic diagram of an embodiment of a resource configuration device in an embodiment of this application.
  • FIG. 9 is a schematic diagram of another embodiment of a resource configuration device in an embodiment of this application.
  • An IAB system includes at least one base station 100, and one or more terminals 101 served by the base station 100, one or more IAB nodes 110, and one or more terminals 111 served by the IAB nodes 110.
  • the base station 100 is usually called a donor A base station (donor next generation node B, DgNB), the IAB node 110 is connected to the base station 100 through a wireless backhaul link 113.
  • the terminal is also called a terminal
  • the donor base station is also called a donor node, that is, a Donor node.
  • Base stations include but are not limited to: evolved node B (evolved node base, eNB), radio network controller (RNC), node B (node B, NB), base station controller (base station controller, BSC), Base transceiver station (base transceiver station, BTS), home base station (for example, home evolved nodeB, or home node B, HNB), baseband unit (baseband unit, BBU), or next-generation new air interface base station (such as gNB), etc.
  • the IAB node includes, but is not limited to, a relay node (RN), a transmission and reception point (TRP), and a relay transmission and reception point (rTRP) 110.
  • the integrated access and backhaul system may also include multiple other IAB nodes, such as the IAB node 120 and the IAB node 130.
  • the IAB node 120 is connected to the IAB node 110 through a wireless backhaul link 123 to access the network.
  • the IAB node 130 is connected to the IAB node 110 through a wireless backhaul link 133 to access the network.
  • the IAB node 120 serves one or more terminals 121, and the IAB node 130 serves one or more terminals 131.
  • both the IAB node 110 and the IAB node 120 are connected to the network through a wireless backhaul link.
  • the wireless backhaul links are all viewed from the perspective of the IAB node.
  • the wireless backhaul link 113 is the backhaul link of the IAB node 110
  • the wireless backhaul link 123 is the backhaul link of the IAB node 120.
  • an IAB node, such as 120 can be connected to another IAB node 110 through a wireless backhaul link, such as 123, so as to connect to the network.
  • IAB nodes can be connected to the network through multi-level wireless IAB nodes.
  • a node that provides wireless backhaul link resources such as 110
  • 120 is called a lower-level node of the IAB node 110
  • the lower-level node can be regarded as a terminal of the upper-level node.
  • an IAB node is connected to an upper-level node, but in the future relay system, in order to improve the reliability of the wireless backhaul link, an IAB node, such as 120 , There may be multiple upper-level nodes providing services for it at the same time.
  • the IAB node 130 may also be connected to the IAB node 120 through the backhaul link 134, that is, both the IAB node 110 and the IAB node 120 are the upper-level nodes of the IAB node 130 .
  • the terminals 101, 111, 121, 131 may be stationary or mobile devices.
  • the mobile device can be a mobile phone, a smart terminal, a tablet computer, a notebook computer, a video game console, a multimedia player, or even a mobile IAB node.
  • Stationary equipment is usually located in a fixed location, such as a computer, an access point (connected to the network through a wireless link, such as a stationary IAB node), and so on.
  • the names of the IAB nodes 110, 120, and 130 do not limit the scenarios or networks in which they are deployed, and may be any other names such as relay, RN, rTRP, and so on.
  • the use of the IAB node in this application is only for the convenience of description.
  • An IAB node is also called a relay node.
  • Each IAB node includes two functional entities: Distributed Unit (DU) and Mobile Terminal (Mobile Termination).
  • the MT functional entity is similar to the function of the UE.
  • a node or an IAB node receives downlink data or sends uplink data to a superior node.
  • the DU functional entity is similar to a base station function, sending downlink data to a subordinate node (IAB node or mobile terminal) or receiving uplink data sent by a subordinate node.
  • the wireless links 102, 112, 122, 132, 113, 123, 133, 134 can be bidirectional links, including uplink and downlink transmission links.
  • the wireless backhaul links 113, 123, 133, 134 can be used by the upper node to provide services for the lower node, such as the upper node 100 Provide wireless backhaul services for the lower-level node 110.
  • the uplink and downlink of the backhaul link may be separated, that is, the uplink and the downlink are not transmitted through the same node.
  • the downlink transmission refers to higher-level nodes, such as node 100, and lower-level nodes, such as node 110, transmitting information or data
  • uplink transmission refers to lower-level nodes, such as node 110, and upper-level nodes, such as node 100, transmitting information or data.
  • the node is not limited to whether it is a network node or a terminal.
  • the terminal can act as a relay node to serve other terminals.
  • the wireless backhaul link may also be an access link in some scenarios.
  • the backhaul link 123 may also be regarded as an access link for the node 110, and the backhaul link 113 is also an access link of the node 100.
  • the foregoing upper-level node may be a base station or a relay node
  • the lower-level node may be a relay node or a terminal with a relay function.
  • the lower-level node may also be a terminal.
  • the Donor node refers to a node that can access the core network through this node, or an anchor base station of the wireless access network, through which the anchor base station can access the network.
  • the anchor base station is responsible for the data processing of the packet data convergence protocol (packet data convergence protocol, PDCP) layer, or is responsible for receiving the data of the core network and forwarding it to the relay node, or receiving the data of the relay node and forwarding it to the core network.
  • packet data convergence protocol packet data convergence protocol
  • the spectrum resources of the wireless backhaul link of the in-band relay and the access link overlap that is, the backhaul link of the in-band relay and the access link have the same frequency band.
  • the IAB node when the IAB node is receiving on the downlink wireless backhaul link of the base station, it cannot transmit to the subordinate terminal or device; while the IAB node cannot receive the subordinate terminal or device when it performs uplink transmission to the superior node on the backhaul link. Transmission on the uplink access link or the backhaul link of the subordinate node.
  • the access link refers to the wireless link used by a node to communicate with its subordinate nodes, including uplink transmission and downlink transmission links.
  • Uplink transmission on the access link is also referred to as uplink transmission on the access link, and downlink transmission is also referred to as downlink transmission on the access link.
  • the nodes include but are not limited to the aforementioned IAB nodes.
  • the backhaul link refers to the wireless link used by a node to communicate with its superior node. Among them, the link between the MT and the superior node is called the parent backhaul link. link), the link through which the DU communicates with the lower-level IAB node is called a child backhaul link.
  • the nodes include but are not limited to the aforementioned IAB nodes.
  • any IAB node in Figure 1 is called the first node
  • the upper node of the IAB node is called the second node
  • the lower node (or terminal device) of the IAB node is called the fourth node.
  • the parent node of the second node is called the third node.
  • Fig. 2 is a schematic diagram of the hardware structure of a network device according to an embodiment of the present application.
  • the network device may be a possible implementation manner of the first node, the second node, or the third node in the embodiment of the present application.
  • the network device may also be referred to as a network node.
  • the network equipment includes a mobile terminal (MT) and a distributed unit (DU).
  • MT mobile terminal
  • DU distributed unit
  • the MT functional entity is similar to the function of the UE, receiving downlink data from an upper node (Donor node or IAB node) or an upper node
  • the DU functional entity is similar to the base station function, sending downlink data to subordinate nodes (IAB nodes or mobile terminals) or receiving uplink data sent by subordinate nodes.
  • MT and DU communicate through internal interfaces (not shown in Figure 2).
  • the MT may include: a transceiver 2110, a processor 2120, a memory 2130, an I/O (Input/Output) interface 2140, and a bus (not shown in the figure).
  • the DU may include a transceiver 2210, a processor 2220, a memory 2230, an I/O (Input/Output) interface 2240, and a bus (not shown in the figure). It should be understood that in some network devices, the MT and the DU may share some hardware, for example, the MT and the DU share a processor and a transceiver.
  • Figure 2 is only one possible structure of the network device, and other structures may actually exist.
  • the MT and the DU can share the same set of transceivers, processors, memories, I/O interfaces, and buses.
  • MT and DU can also use independent transceiver, processor, memory, I/O interface and bus respectively.
  • the transceiver 2110 further includes an antenna and a radio frequency circuit, and the memory 2130 is further used to store instructions and data.
  • the transceiver 2110, the processor 2120, the memory 2130, and the I/O interface 2240 are communicatively connected to each other through a bus, and multiple antennas are connected to a radio frequency circuit.
  • the processor 2120 may be a general-purpose processor, such as but not limited to a central processing unit (CPU), or a dedicated processor, such as, but not limited to, a digital signal processor (DSP). Application Specific Integrated Circuit (ASIC) and Field Programmable Gate Array (FPGA), etc.
  • the processor 2120 may also be a combination of multiple processors.
  • the processor 2120 may be used to execute the relevant steps of the resource configuration method in the subsequent method embodiments.
  • the processor 2120 may be a processor specifically designed to perform the foregoing steps and/or operations, or a processor that performs the foregoing steps and/or operations by reading and executing instructions stored in the memory 2130.
  • the processor 2120 is Data may be needed in the process of performing the above steps and/or operations.
  • the transceiver 2110 includes an antenna and a radio frequency circuit, where the radio frequency circuit is used to transmit a signal through at least one antenna among the multiple antennas, and is also used to receive a signal through at least one antenna among the multiple antennas.
  • the transceiver 2110 may be specifically used to perform execution through at least one antenna among multiple antennas.
  • the resource configuration method in the subsequent method embodiments is applied to the first node or In the second node, the operation performed by the transceiver module in the first node or the second node.
  • the memory 2130 may be various types of storage media, such as random access memory (Random Access Memory, RAM), read only memory (Read Only Memory, ROM), non-volatile RAM (Non-Volatile RAM, NVRAM), Programmable ROM (Programmable ROM, PROM), erasable PROM (Erasable PROM, EPROM), electrically erasable PROM (Electrically Erasable PROM, EEPROM), flash memory, optical memory and registers, etc.
  • the memory 2130 is specifically used to store instructions and data.
  • the processor 2120 can execute the above-mentioned steps and/or operations by reading and executing the instructions stored in the memory 2130. In the process of performing the above-mentioned operations and/or steps May need to use data.
  • the I/O interface 2140 is used to receive instructions and/or data from peripheral devices, and output instructions and/or data to the peripheral devices.
  • the above-mentioned network device may also include other hardware devices, which will not be listed here.
  • processor + transceiver mode where the processor is used to perform various processing operations, such as but not limited to generation, determination, judgment, and search. Extract, obtain, read, and receive input to-be-processed data and output processed data.
  • the transceiver is used to perform operations such as transmitting and receiving.
  • the processor can be implemented in the following ways:
  • the processor is a dedicated processor.
  • the processor may further include an interface circuit and a processing circuit, where the interface circuit is used to receive data that needs to be processed by the processing circuit and output the processing of the processing circuit.
  • the processing circuit is used to perform the various processing operations described above.
  • the processor is implemented by adopting a general-purpose processor+memory architecture, where the general-purpose processor is used to execute processing instructions stored in the memory, and these processing instructions are used to instruct the general-purpose processor to perform the foregoing various processing operations. It is not difficult to understand that the processing performed by the general-purpose processor depends on the processing instructions stored in the memory. By modifying the processing instructions in the memory, the general-purpose processor can be controlled to output different processing results.
  • the general-purpose processor and the memory may be integrated on the same chip, for example, both the general-purpose processor and the memory may be integrated on the processing chip.
  • the general-purpose processor and the memory may also be arranged on different chips, for example, the general-purpose processor is arranged on the processing chip, and the memory is arranged on the storage chip.
  • the technical solutions provided in the embodiments of the present application can also be implemented in the form of a computer-readable storage medium, wherein the computer-readable storage medium stores processing instructions for implementing the technical solutions of the embodiments of the present application for reading by a general-purpose processing device ,
  • the aforementioned general-purpose processing device should be understood as a processing device that includes necessary hardware devices such as a processor and a transceiver, and the operation of these hardware devices depends on the processing instructions stored in the aforementioned computer-readable storage medium.
  • the reference signal in the embodiments of this application may be a demodulation reference signal (DMRS) in the LTE protocol or the NR protocol, or it may also be the LTE protocol or the NR protocol or other protocols defined in the future to achieve the same or similar Functional reference signals, such as phase-tracking reference signals (PT-RS), channel-state information reference signals (CSI-RS), or sounding reference signals (Sounding reference signals, SRS), etc., this application does not limit this.
  • the reference signal is an uplink DMRS as an example for description.
  • the DMRS can be carried in the physical shared channel and sent together with the data signal, so as to demodulate the data signal carried in the physical shared channel. For example, it is sent together with downlink data in a physical downlink share channel (PDSCH), or sent with uplink data in a physical uplink share channel (PUSCH).
  • the DMRS can also be carried in the physical control channel and sent together with the control signaling, so as to demodulate the control signaling carried by the physical control channel. For example, it is sent together with the downlink control signaling in the PDCCH, or it is sent together with the uplink control signaling in the physical uplink control channel (PUCCH).
  • the demodulation reference signal may include a downlink demodulation reference signal sent through PDCCH or PDSCH, and may also include an uplink demodulation reference signal sent through PUCCH or PUSCH.
  • DMRS achieves orthogonalization between ports through frequency division multiplexing, frequency domain code division multiplexing and time domain code division multiplexing: frequency division multiplexing: different ports (or port groups) )
  • DMRS occupies different frequency domain positions.
  • DMRS port groups occupying different frequency domain positions are called code division multiplexing groups.
  • Type 1 configuration includes two code groups in a uniform comb arrangement; type 2 configuration includes three code groups; frequency domain code division multiplexing: In one code group, orthogonal codes ⁇ 1, 1 ⁇ and ⁇ 1 , -1 ⁇ to achieve DMRS frequency domain orthogonalization.
  • each code group can include two orthogonal ports; time domain code division multiplexing: between different DMRS symbols, orthogonal codes ⁇ 1, 1 ⁇ and ⁇ 1, -1 can be used ⁇
  • time domain code division multiplexing between different DMRS symbols, orthogonal codes ⁇ 1, 1 ⁇ and ⁇ 1, -1 can be used ⁇
  • configuration type 1 can achieve DMRS orthogonalization of up to 4 ports
  • configuration type 2 can achieve DMRS orthogonalization of up to 6 ports.
  • configuration type 1 can achieve DMRS orthogonalization of up to 8 ports
  • configuration type 2 can achieve DMRS orthogonalization of up to 12 ports.
  • Time domain (symbol bit) alignment A variety of methods for DMRS orthogonalization are given above. It should be noted that an important prerequisite for achieving DMRS orthogonalization for different data streams is that the DMRS symbols of different data streams are in the time domain at the receiving end. Alignment, that is, the DMRS of different data streams are located in the receiving window of the same symbol at the receiving end. For example, the DMRS symbols sent by multiple UEs (or MTs) should be received by the IAB node DU or base station using the same symbol reception window, so as to achieve DMRS orthogonalization.
  • Timing mode 1 is the basic uplink timing mode of the MT or UE in the IAB node.
  • the second node (upper IAB node or base station) adjusts the transmission advance of the MT of the first node (lower IAB node), so that the uplink frame of the first node and other UE or IAB node MT (the other The uplink frames of the UE being a child node of the second node are aligned on the uplink reception window of the second node.
  • the transmission advance may be timing advance (TA).
  • TTA (N TA + N TA, offset ) T c , where Tc is the time unit defined in the NR standard, and N TA is obtained through the configuration and update of the superior node, and N TA,offset is the frequency band-related offset defined by the protocol or configured by the superior node.
  • Timing mode 7 is similar to timing mode 1.
  • the second node adjusts the transmission advance of the MT of the first node to achieve symbol-level alignment of the DU uplink received signal and the MT downlink received signal in the second node.
  • the transmission advance may be TA+offset, and the offset may be configured by the second node or the third node, and the third node is an upper node (or a donor node) of the second node.
  • FIG. 4a is a schematic diagram of timing mode 1 and timing mode 7 involved in an embodiment of this application. It should be understood that timing mode 1 and timing mode 1 and Timing mode 7 is the two timing modes adopted by the second node DU.
  • the second node DU adopts timing mode 7 for uplink reception
  • the downlink reception (MT DL RX) of the MT in the second node is aligned with the uplink reception (DU UL RX) of the DU in the second node.
  • the downlink received symbol N for example, symbol 0
  • the uplink received symbol N+1 for example, symbol 1 of the DU, where N is an integer.
  • the MT of its subordinate node that is, the MT of the first node, has two corresponding timing modes (uplink transmission timing). It should be understood that this The embodiment takes the uplink transmission of the IAB node MT as an example for description, but the method in this embodiment can also be applied to the uplink transmission timing of the UE.
  • FIG. 4b is a schematic diagram of the timing mode 1 and the timing mode 7 involved in the embodiment of the application at the transmitting end.
  • the advance of the uplink transmission (MT UL TX) time of the MT in the first node relative to the downlink reception (MT DL RX) time of the MT in the first node is the timing advance (TA).
  • TA timing advance
  • the advance of the uplink transmission time of the first node MT relative to the downlink reception time of the first node MT is the sum of the timing advance (TA) and the offset (offset), and the offset may be the second node It can also be configured by the third node (donor node).
  • the embodiment of the present application mainly considers that there is an offset between the timing mode 7 of the first node and the basic timing mode 1, but does not limit the timing alignment effect achieved by the timing mode 7 at the second node.
  • the second node can configure the first node to use timing mode 7, and align the uplink reception of the DU of the second node with the uplink transmission of the MT of the second node through an appropriate offset configuration, thereby realizing simple self-interference offset.
  • Timing mode 6 In order to support IAB's space division multiplexing, timing mode 6 is introduced. Timing mode 6 can realize simultaneous transmission of the MT uplink of the IAB node and the downlink DU of the IAB node. For ease of understanding, at the first node angle, please refer to Fig. 4c. Fig. 4c is a schematic diagram of timing mode 1 and timing mode 6 involved in an embodiment of this application. In timing mode 6, the downlink transmission (DU DL TX) time of the DU of the first node is aligned with the uplink transmission (MT UL TX) time of the MT in the first node.
  • DU DL TX downlink transmission
  • MT UL TX uplink transmission
  • the time unit aligned in FIGS. 4a to 4b is a time slot, that is, the MT and the DU perform time slot transmission at the same time.
  • the aligned time unit is not limited.
  • the aligned time unit may also be a symbol.
  • the inclusion of 14 symbols in each slot is only an exemplary illustration.
  • FIG. 5a is a schematic diagram of an embodiment of a resource configuration method in an embodiment of the application.
  • the reference signal involved in the embodiment of the present application will be described with the upstream DMRS as an example.
  • the reference signal may also be: phase-tracking reference signals (PT-RS), channel state information reference signal (channel-state information reference signal, CSI-RS), or sounding reference signal (Sounding reference signal, SRS), etc., which are not limited here.
  • PT-RS phase-tracking reference signals
  • CSI-RS channel state information reference signal
  • SRS Sounding reference signal
  • a first node receives first configuration information sent by a second node.
  • the first node receives the first configuration information sent by the second node.
  • the first configuration information is associated with the first timing pattern of the mobile terminal MT of the first node, and the first configuration information indicates the first time domain position at which the first node sends the uplink reference signal.
  • the first timing mode includes timing mode 6, or timing mode 7. It should be noted that the first timing mode can also be other timing modes, such as timing mode 2, timing mode 3, timing mode 4, or timing mode 5, etc. , There is no restriction here.
  • the first configuration information includes the symbol index of the start position of the uplink reference signal, for example, "pos2" or "pos3".
  • the meaning is: when the symbol index of the start position of the uplink reference signal is "pos2", it means that the symbol index of the start position of the uplink reference signal is 2, that is, the symbol 2 of the uplink time slot carries the symbol of the first uplink reference signal.
  • the downlink reception time (MT DL RX) of the MT in the first node receives the signal at symbol 2.
  • the first timing mode is timing mode 7
  • the first time domain position may be the uplink time.
  • the symbol 3 (“pos3") of the slot, and the start position of the downlink DMRS of the second node MT is symbol 2.
  • the second node MT downlink reception and the DU uplink reception based on timing mode 7 exist in the time domain A symbol offset, so the second node receives the symbol 2 of the MT and the symbol 3 of the DU in the same receiving window, thereby realizing the symbol bit alignment of the DMRS at the receiving end, so that the DMRS received by the MT and the DMRS received by the DU can be orthogonal ⁇ Treatment.
  • the first timing mode is timing mode 6
  • the first configuration information also includes related configuration information, which is used to instruct the first node to send the reference signal at the first time domain position.
  • the first configuration information includes the offset of the start position of the uplink reference signal, and the offset refers to the offset of the first time domain position relative to the DMRS time domain position broadcast by the base station. shift.
  • the base station configures the start symbols of the pre-DMRS of the uplink PUSCH and the downlink PDSCH for the UE or the IAB node MT through broadcast signaling (for example, MIB or SIB1).
  • the information element is "dmrs-TypeA-Position”
  • the value of the information element is "pos2" and "pos3", indicating that the index of the first preceding DMRS symbol is symbol 2 or symbol 3.
  • the first configuration information may indicate the offset of the first time domain position relative to the above-mentioned DMRS position, and the value may be [-2, -1, 0, 1, 2]. For example, when the broadcast signaling configuration starts When the position is symbol 2 "pos2" and the offset is configured as "-1", the first time domain position obtained is symbol 1 "pos1".
  • the first time domain position may be a sign bit, for example, as shown in FIG. 5b.
  • the value range of the sign bit may be symbol 1 "pos1", symbol 2 "pos2", symbol 3 "pos3” or symbol 4 "pos4", etc.
  • the first configuration information further includes indication information of the first timing mode.
  • the indication information of the first timing mode is used to indicate the first node, which timing mode is the first timing mode associated with the first configuration information.
  • the indication information of the first timing mode may be a certain field in the first configuration information. For example, when the indication information of the first timing mode is "XXX", the first timing mode is timing mode 7; The indication information of the first timing mode is “YYY”, and the first timing mode is timing mode 6.
  • the indication information of the first timing mode may also be a certain bit in the first configuration information. For example, when a certain bit in the first configuration information is "01", it indicates that the first timing mode is timing.
  • Mode 6 When a bit in the first configuration information is "00", it indicates that the first timing mode is timing mode 7.
  • the indication information of the first timing mode can not only explicitly indicate the first timing mode, but also implicitly indicate the first timing mode. For example, when the field "ZZZ" appears in the first configuration information, the first configuration information The associated first timing mode is timing mode 6; when the field "ZZZ" does not appear in the first configuration information, the first timing mode associated with the first configuration information is timing mode 7.
  • the first configuration information is carried in unicast signaling, for example: radio resource control (RRC) signaling, or media access control sublayer control element signaling (MAC CE) ).
  • RRC radio resource control
  • MAC CE media access control sublayer control element signaling
  • the first configuration information may also be carried in other high-level signaling, which is not limited here.
  • the second node may generate the first configuration information based on the instruction of the third node, and the second node may also generate the first configuration information based on its own business requirements.
  • the third node is an upper-level node or donor node of the second node, or other upper-level network nodes, such as operation and maintenance management nodes (OAM).
  • OAM operation and maintenance management nodes
  • the first configuration information in the embodiment of the present application includes one or more of the following information: demodulation reference signal (Demodulation Reference Signal, DMRS) configuration type information, Additional DMRS time domain location information, DMRS sequence initialization parameters, DMRS sequence type information, usable code division multiplexing (CDM) group ID, unused code division multiplexing group ID, DMRS or pre-DMRS The symbol index of the start position, the offset of the start position of the DMRS or pre-DMRS, and the indication information of the first timing mode.
  • demodulation reference signal Demodulation Reference Signal
  • DMRS demodulation Reference Signal
  • CDM usable code division multiplexing
  • the DMRS configuration type information may be configuration type 1 (configuration type 1) or configuration type 2 (configuration type 2).
  • FIG. 3 is a schematic diagram of DMRS under different configuration types in an embodiment of the application.
  • the resource element (RE) in the symbol can be divided into two groups by frequency domain position, that is, DMRS configuration type 1 in Figure 3 is marked as A set of 0 and 1 REs, each group of REs are arranged in a comb shape in the frequency domain.
  • the two groups of REs are called code division multiplexing group 0 (CDM group 0) and code division multiplexing group 1 (CDM group 1), respectively.
  • each CDM group can multiplex two DMRS ports through code division. Therefore, the DMRS frequency domain pattern in one RB can be multiplexed with 4 DMRS ports, such as ports 1000, 1001, 1002, and 1003. Among them, DMRS ports belonging to different CDM groups are orthogonalized by frequency division multiplexing, while those belonging to the same CDM group are orthogonalized by (frequency domain) code division.
  • DMRS configuration type 2 (DMRS configuration type 2): First, for a single-symbol DMRS design, the REs in the symbol can be divided into three groups by frequency domain position, that is, the DMRS configuration type 2 in Figure 3 is marked as 0, 1, and 2. RE collection, each group of REs are adjacent to each other in the frequency domain. In the protocol, they are called code division multiplexing group 0 (CDM group 0), code division multiplexing group 1 (CDM group 1) and code division multiplexing. Group 2 (CDM group 2). In the current protocol, each CDM group can multiplex two DMRS ports through code division.
  • the DMRS in one RB can multiplex 6 DMRS ports, which are respectively denoted as ports 1000, 1001, 1002, 1003, 1004, and 1005.
  • DMRS ports belonging to different CDM groups are orthogonalized by frequency division multiplexing, while those belonging to the same CDM group are orthogonalized by (frequency domain) code division.
  • time domain orthogonality can be further introduced Cover code (orthogonal cover code, OCC) ⁇ 1, 1 ⁇ and ⁇ 1, -1 ⁇ .
  • OCC orthogonal cover code
  • the above-mentioned single-symbol DMRS design or dual-symbol DMRS design refers to the number of consecutive front-loaded DMRS symbols in a slot, and does not include additional DMRS (additional DMRS).
  • DMRS is usually for high-speed or high-Doppler frequency offset scenarios, and is added to make channel estimation more accurate.
  • the first configuration information is applicable to the pre-DMRS of NR, and it is also applicable to the case of pre-DMRS plus additional DMRS.
  • the "time-domain location information of the additional DMRS" in the first configuration information instructs the first node to send the additional DMRS at the designated time-domain location.
  • the first configuration information may configure a single-symbol DMRS, a dual-symbol DMRS, or a multi-symbol DMRS, which is not limited here.
  • the DMRS sequence can be a pseudo-random sequence, such as a "Gold sequence", a "ZC sequence", or a computer search sequence.
  • the sequence type of the UE or IAB node MT can be configured by the base station or superior node, or it can be implicitly inferred by the UE or IAB node based on information such as waveform and channel type.
  • the DMRS sequence initialization parameters When the DMRS adopts a pseudo-random sequence, such as a "Gold sequence", it needs to generate a local sequence based on the initial parameters.
  • the initialization parameters may be generated by the cell ID or configured by the base station.
  • the pre-configured code division multiplexing group identifier indicates that the upper-level node only schedules the ports in the one or more groups of code division multiplexing groups.
  • the value is determined by the DMRS configuration type. For example, for DMRS configuration type 1, the pre-configured code division multiplexing group can be one or two of 0 and 1, while for DMRS configuration type 2, the pre-configured code division multiplexing group can be One, two or three of 0, 1, and 2;
  • the unused code division multiplexing group identifier also called the reserved code division multiplexing group identifier, indicates that the upper-level node will not schedule the ports in the one or more groups of code division multiplexing groups.
  • the value is determined by the DMRS configuration type. For example, for DMRS configuration type 1, the unused code division multiplexing group can be one of 0 and 1, while for DMRS configuration type 2, the pre-configured code division multiplexing group can be 0. One or both of 1, and 2.
  • the ID of the code division multiplexing group not used by the first node can also be derived from the pre-configured code division multiplexing group ID. For example, when the DMRS configuration type is 1, the pre-configured code division multiplexing group ID is 0.
  • the code division multiplexing group identifier used is 1.
  • the first node determines the usable CMD group ID based on the unused code division multiplexing group ID, and implements the DMRS port orthogonalization through these usable code division multiplexing group IDs.
  • the upper-level node does not map the data modulation symbols at the time domain position of the unused CDM group, so as to ensure that the first node can achieve the orthogonalization of the MT and DU reference signals through reasonable DU scheduling.
  • the first node may always perform the DU scheduling reference signal indication in the code division multiplexing group reserved by the upper node.
  • the symbol index of the start position of the DMRS refers to the symbol index of the start position of the DMRS in the time slot.
  • the symbol index of the start position of the DMRS is symbol 3, which means that it is at the third symbol position of the time slot. It is the starting position of DMRS.
  • the DMRS may be a pre-DMRS.
  • the offset of the start position of the DMRS refers to the offset of the start position of the DMRS relative to the time domain position of the DMRS broadcast by the base station.
  • the DMRS may be a pre-DMRS.
  • the indication information of the first timing mode is used to indicate to the first node which timing mode the first timing mode associated with the first configuration information is.
  • the first node receives second configuration information sent by the second node.
  • the first node receives the second configuration information sent by the second node.
  • the second configuration information indicates the second time domain position at which the first node sends the uplink reference signal in the second timing mode.
  • the second timing mode Including timing mode 1.
  • the second configuration information is carried in broadcast signaling, for example, the second configuration information is carried in MIB information or SIB1 information.
  • the second configuration information may also be carried in other high-level signaling, which is not limited here.
  • the second configuration information is similar to the foregoing first configuration information, and details are not described herein again.
  • step 501 may be performed first, and then step 502; or step 502 may be performed first, and then step 501 may be performed; step 501 and step 502 may also be performed at the same time, which is not limited here.
  • the first node determines the timing mode to be adopted.
  • the first node determines the timing mode to be adopted, and the second node may send first indication information to the first node, where the first indication information is used to instruct the first node to use the first timing mode.
  • the first node can also use other existing parameters to speculate and determine the current timing mode.
  • the first node may determine the timing mode it adopts according to the scheduled frame structure and physical resources (bandwidth part, BWP), and different BWPs are associated with different timing modes.
  • BWP bandwidth part
  • the first node adopts the first BWP it adopts timing mode 1 for transmission
  • the first node adopts the second BWP it adopts timing mode 6 for transmission
  • the first node adopts the third BWP It uses timing mode 7 for transmission.
  • the first node may also obtain the timing mode according to the following information, and determine the timing mode to be used.
  • This information includes transmission configuration indicator (TCI) information, and different TCIs are associated with different timing modes.
  • TCI transmission configuration indicator
  • the first TCI corresponds to timing mode 1
  • the second TCI corresponds to timing mode 6
  • the third TCI corresponds to timing mode 7;
  • the information may also include: SRS resource indicator (SRS resource indicator, SRI) information, and different SRIs are associated with different timing patterns.
  • SRS resource indicator SRI
  • the first SRI corresponds to timing mode 1
  • the second SRI corresponds to timing mode 6
  • the third SRI corresponds to timing mode 7;
  • the information may also include: spatial relation information (spatialRelationInfo), and different spatial relation information is associated with different timing modes.
  • spatial relation information spatialRelationInfo
  • the first spatial relationship information corresponds to timing mode 1
  • the second spatial relationship information corresponds to timing mode 6
  • the third spatial relationship information corresponds to timing mode 7;
  • the information may also include reference signal identification information, and different reference signal identification information is associated with different timing patterns.
  • the first reference signal identifier corresponds to timing mode 1
  • the second reference signal identifier corresponds to timing mode 6
  • the third reference signal identifier corresponds to timing mode 7.
  • the information can also be other information with an identification function, which will not be repeated here.
  • the first configuration information may be associated with multiple timing patterns at the same time, and the first node selects one timing pattern in the first configuration information based on the first indication information to send the uplink reference signal. For example: the first configuration information associates timing mode 6 and timing mode 7 at the same time, then the first indication information is "A" to indicate that the first node uses timing mode 6, or the first indication information is "B" to indicate the first node Use timing mode 7.
  • the first indication information may be carried in independent signaling (independent of the first configuration information). For example: MAC CE used for timing mode indication, Downlink Control Information (DCI) scheduling, etc. Then, the first node determines that the adopted timing mode is the first timing mode based on the first indication information.
  • the first indication information may be a certain field. For example, when the first indication information includes the field "mode7”, it indicates that the first node uses timing mode 7; when the first indication information includes the field "mode7", mode6", then this instructs the first node to use timing mode 6.
  • the indication information of the first timing mode may also be a bit. For example, when a bit in the first configuration information is "01", it instructs the first node to use timing mode 6; when the first configuration information is A bit of "00" indicates that the first node uses timing mode 7.
  • the first node determines the adopted mode based on the first indication information
  • the timing mode is timing mode 6.
  • the first node determines that the adopted timing mode is timing mode 1 based on the first indication information.
  • the first indication information a field or bit that plays an indication function may be referred to as the first parameter.
  • the first indication information includes the field "mode7”, it indicates that the first node uses timing mode 7. At this time, the first parameter is the field "mode7".
  • the first parameter is the bit "01”.
  • the second node may also send second indication information to the first node.
  • the second indication information is used to instruct the first node to use the second timing mode (timing mode 1).
  • a node sends an uplink reference signal to the second node based on the second configuration information.
  • timing mode of the first node is the first timing mode
  • the information sends an uplink reference signal to the second node.
  • the first node when the first indication information indicates that the first node uses the first timing mode (timing mode 6 or timing mode 7), the first node sends to the second node at the first time domain position based on the first configuration information Uplink reference signal.
  • the first node when the first indication information (or the second indication information) indicates that the first node uses the second timing mode (timing mode 1), the first node sends to the second node at the second time domain position based on the second configuration information Uplink reference signal.
  • the second node sends first configuration information to the first node, and the first configuration information is associated with the first timing pattern, so that the first node sends uplink data at the first time domain location based on the first configuration information.
  • Reference signal Since the first configuration information is associated with the first timing mode, the first node can send the uplink reference signal to the second node at the first time domain location associated with the first timing mode, so as to satisfy the IAB node in multiple timing mode scenarios Next, the orthogonalization requirements for sending and receiving reference signals.
  • FIG. 6 is a schematic diagram of an embodiment of yet another resource configuration method proposed by an embodiment of the application.
  • a resource configuration method proposed in an embodiment of the present application includes:
  • the first node receives first configuration information sent by the second node.
  • step 601 is similar to the aforementioned step 501, and will not be repeated here.
  • the first node receives second configuration information sent by the second node.
  • step 602 is similar to the aforementioned step 502, and will not be repeated here.
  • the second node configures a transmission mode parameter set to the first node.
  • the second node configures a transmission mode parameter set to the first node.
  • the transmission mode parameter set includes the first transmission mode parameter and/or the second transmission mode parameter, and the first transmission mode parameter is associated with the first timing mode,
  • the second transmission mode parameter is associated with the second timing mode.
  • Table 1 shows the association relationship between the transmission mode parameter and the timing mode.
  • Timing mode 1 Timing mode 6 2 Timing mode 7 0 Timing mode 1
  • the transmission mode parameter set may also include other transmission mode parameters, and these transmission mode parameters are associated with other timing modes.
  • the third transmission mode parameter, the third transmission mode parameter may be associated with timing mode 2.
  • the transmission mode parameter set can be realized in the manner in Table 1 above; or can be realized by a set of functions, for example: the second node configures the first node with a transmission mode parameter set realized by a set of functions , This group of functions is called the first function. After the first node is configured with the first function, the first parameter from the second node is input to the first function. The output value of the first function obtained is called the transmission mode parameter, and different transmission mode parameters are associated with different timing modes, similar to Table 1. The first node determines the timing mode adopted by the first node based on the output value of the first function.
  • the first node sends a configuration information request to the second node.
  • the first node when the first node sends the uplink reference signal to the second node based on the first configuration information, in order to achieve port orthogonalization, in step 604, the first node needs to send a configuration information request to the second node.
  • the information request is used to request the second node to configure the orthogonalized port for the first node.
  • the orthogonalized port may be a set of ports, which is called a first port set, and the first port set may be one or more ports.
  • the first port set includes: all ports included in code division multiplexing group 0 or 1.
  • the second node configures the first port set to the first node.
  • the second node configures a first port set to the first node, and the first port set includes a port set or a reserved port set.
  • the ports included in the port set are ports that can be used by the first node
  • the ports included in the reserved port set are ports that cannot be used by the first node.
  • the configured first port set is a port set
  • the first node sends the uplink reference signal based on the port set.
  • a reserved port set is configured in the configured first port set, the first node selects other ports except the reserved port set to send the uplink reference signal based on the reserved port set.
  • steps 604 to 605 are optional steps.
  • the second node sends the first indication information to the first node.
  • the second node sends first indication information to the first node, where the first indication information is used to instruct the first node to use the first timing mode.
  • the first indication information carries a first parameter, and the first parameter is used to indicate the timing mode corresponding to which transmission mode parameter is selected by the first node.
  • the first node determines the timing mode to be used according to the first parameter and the transmission mode parameter set.
  • the first parameter is "1”
  • the first node determines that the timing mode adopted by the first node is timing mode 6 based on the first parameter and the transmission mode parameter set (for example, Table 1);
  • the transmission mode parameter set for example, Table 1
  • the first node determines that the timing mode adopted by the first node is timing mode 7 based on the first parameter and the transmission mode parameter set (for example, Table 1).
  • the first node determines the adopted timing mode only according to the first parameter. specific:
  • the first node determines the adopted timing mode based on the first indication information.
  • the first node determines the timing mode to be used based on the first parameter carried in the first indication information.
  • the first node determines that the timing mode adopted by the first node is timing mode 6 based on the first parameter and the transmission mode parameter set (for example, Table 1);
  • the transmission mode parameter set for example, Table 1
  • the first node determines that the timing mode adopted by the first node is timing mode 7 based on the first parameter and the transmission mode parameter set (for example, Table 1).
  • the first node sends an uplink reference signal to the second node based on the first configuration information.
  • the first time domain position may be symbol 2 in the time slot.
  • the MT in the first node transmits at symbol 2.
  • the DU in the first node sends a downlink reference signal at symbol 2, so that the DMRS sent by the MT and the DMRS sent by the DU can be orthogonalized, so as to realize the symbol bit alignment of the DMRS at the sending end.
  • the second node sends first configuration information to the first node, and the first configuration information is associated with the first timing pattern, so that the first node sends uplink data at the first time domain location based on the first configuration information.
  • Reference signal Since the first configuration information is associated with the first timing mode, the first node can send the uplink reference signal to the second node at the first time domain location associated with the first timing mode, so as to satisfy the IAB node in multiple timing mode scenarios Next, the orthogonalization requirements for sending and receiving reference signals.
  • the first node may also request the second node to send a configuration information request, so that the second node configures the first port set to the first node, and the ports in the first port set are orthogonalized.
  • the second node may also configure a transmission mode parameter set to the first node, and the first indication information sent by the second node to the first node carries the first parameter, so that the first node is based on the first parameter and the transmission mode parameter set Determining the timing mode used improves the flexibility of the solution.
  • FIG. 7a is a schematic diagram of an embodiment of yet another resource configuration method proposed in an embodiment of this application.
  • This application also proposes a resource allocation method, including:
  • the first node measures the downlink timing when the first node receives the downlink reference signal of the second node.
  • the first node measures the downlink timing when the first node receives the downlink reference signal of the second node. Specifically, the first node determines the downlink timing when the first node receives the downlink reference signal of the second node by sending a reference signal to the second node, and using the measurement value of the reference signal reported by the second node.
  • the reference signal may be a synchronization signal block (synchronization signal block, SSB), or a channel state information reference signal (channel state information-reference signal, CSI-RS), or a tracking reference signal (tracking reference signal, TRS) etc.
  • the first node determines the downlink timing based on the measured value of the reference signal and an offset, and the offset may be the same as the offset in the foregoing embodiment.
  • the first node determines the first downlink timing based on the measured value of the reference signal.
  • the first node determines the second downlink timing based on the first downlink timing and the offset.
  • the offset can also be configured by the superior node.
  • the first node additionally configures the downlink timing. At this time, the downlink timing has nothing to do with the measured value of the reference signal reported by the second node.
  • the first node receives third configuration information sent by the second node.
  • the first node receives the third configuration information sent by the second node
  • the third configuration information is similar to the first configuration information in the foregoing embodiment.
  • the difference is that the third configuration information indicates that the first node receives the downlink reference signal sent by the second node at the third time domain position.
  • the third time domain position is determined by the downlink timing obtained in step 701.
  • the third time domain positions configured for different downlink timings may be inconsistent.
  • the third configuration information indicates that the first node receives the downlink reference signal sent by the second node at "pos3";
  • the third configuration information indicates that the first node receives the downlink reference signal sent by the second node at "pos4".
  • downlink timings can be configured in the third configuration information, and the time domain positions corresponding to these downlink timings can be configured by the first node based on the measured value of the reference signal, or can be configured by the first node.
  • the configuration based on the measured value and offset of the reference signal can also be configured by the first node (or other superior nodes) based on actual requirements, and there is no limitation here.
  • the first node receives fourth configuration information sent by the second node.
  • the first node receives the fourth configuration information sent by the second node, and the fourth configuration information is similar to the second configuration information in the foregoing embodiment.
  • the difference lies in that the fourth configuration information instructs the first node to use the third downlink timing.
  • the first node receives the downlink reference signal sent by the second node at the fourth time domain position. Similar to the third configuration information in step 702, the fourth time domain position (third downlink timing) may also be determined by the downlink timing obtained in step 701.
  • more downlink timings may be configured in the fourth configuration information, and the time domain positions corresponding to these downlink timings may be configured by the first node based on the measured value of the reference signal, or may be configured by the first node based on the reference signal.
  • the measurement value and offset configuration can also be configured by the first node (or other superior nodes) based on actual requirements, and there is no limitation here.
  • step 703 is an optional step.
  • the second node sends third indication information to the first node.
  • the second node sends the third indication information to the first node.
  • the third indication information is used to indicate which downlink timing the first node uses to receive the reference signal.
  • the third indication information is similar to the first indication information in the foregoing embodiment. The difference is that the first node receives the downlink reference signal sent by the second node at the third time domain position or the fourth time domain position based on the third configuration information.
  • the first node determines the adopted downlink timing based on the third indication information.
  • the first node determines the adopted downlink timing based on the third indication information. Specifically: the first node determines to use the first downlink timing, or the second downlink timing, or the third downlink timing based on the third indication information. In addition to this explicit method, the first node can also speculate and determine the current downlink timing through other existing parameters.
  • the first node may determine its adopted downlink timing according to the scheduled frame structure and the physical resource bandwidth part (BWP), and different BWPs are associated with different downlink timings.
  • BWP physical resource bandwidth part
  • the first node uses the first BWP, it uses the first downlink timing for transmission; when the first node uses the second BWP, it uses the second downlink timing for transmission; when the first node uses the third In the case of BWP, it uses the third downlink timing for transmission.
  • the first node may also obtain the downlink timing according to the following information, and determine the adopted downlink timing.
  • This information includes transmission configuration indicator (TCI) information, and different TCIs are associated with different downlink timings.
  • TCI transmission configuration indicator
  • the first TCI corresponds to the first downlink timing
  • the second TCI corresponds to the second downlink timing
  • the third TCI corresponds to the third downlink timing
  • the information may also include: SRS resource indicator (SRS resource indicator, SRI) information, and different SRIs are associated with different downlink timings.
  • SRS resource indicator SRI
  • the first SRI corresponds to the first downlink timing
  • the second SRI corresponds to the second downlink timing
  • the third SRI corresponds to the third downlink timing
  • the information may also include: spatial relation information (spatialRelationInfo), and different spatial relation information is associated with different downlink timings.
  • spatial relation information spatialRelationInfo
  • different spatial relation information is associated with different downlink timings.
  • the first spatial relationship information corresponds to the first downlink timing
  • the second spatial relationship information corresponds to the second downlink timing
  • the third spatial relationship information corresponds to the third downlink timing
  • the information may also include reference signal identification information, and different reference signal identification information is associated with different downlink timings.
  • the first reference signal identifier corresponds to the first downlink timing
  • the second reference signal identifier corresponds to the second downlink timing
  • the third reference signal identifier corresponds to the third downlink timing.
  • the information can also be other information with an identification function, which will not be repeated here.
  • the first node receives, based on the third configuration information, the downlink reference signal sent by the second node.
  • the first node receives the downlink reference signal sent by the second node based on the third configuration information (or the fourth configuration information).
  • the second node sends third configuration information to the first node, and the third configuration information is associated with the first downlink timing and/or the second downlink timing. So that the first node receives the downlink reference signal sent by the second node at the third time domain location based on the third configuration information. In this way, the orthogonalization requirements of IAB nodes for sending and receiving reference signals in multiple timing mode scenarios are met.
  • Fig. 7b is a schematic diagram of an embodiment of yet another resource configuration method proposed in an embodiment of this application.
  • a resource configuration method proposed in an embodiment of the present application includes:
  • the first node receives the first configuration information sent by the second node.
  • the first node receives the second configuration information sent by the second node.
  • the first node receives the third configuration information sent by the second node.
  • the first node receives the fourth configuration information sent by the second node.
  • the second node may configure one or more of the configuration information (the first configuration information to the fourth configuration information) mentioned in the above steps S1-S4 to the first node, which is not limited here.
  • the second node sends the first configuration information and the third configuration information to the first node, or the second node sends the first configuration information, the second configuration information and the third configuration information to the first node.
  • the first node receives the fourth indication information sent by the second node.
  • the first node receives the fourth indication information sent by the second node, and the fourth indication information is used to indicate which configuration information the first node uses to send or receive the reference signal.
  • the fourth indication information carries an identifier associated with the foregoing configuration information, so that the first node determines which configuration information to use to send or receive the reference signal based on the fourth indication information.
  • the fourth indication information carries the identifier "type1-1”
  • the first node determines to use the first configuration information to send the reference signal based on the fourth indication information.
  • the first node uses information related to timing mode 7 in the first configuration information to send the reference signal at the first time domain location.
  • the first node determines to use the first configuration information to send the reference signal based on the fourth indication information. Specifically, the first node uses information related to timing mode 6 in the first configuration information to send the reference signal at the first time domain location.
  • the first node determines to use the third configuration information to receive the reference signal based on the fourth indication information. Specifically, the first node uses the information related to the first downlink timing in the third configuration information to receive the reference signal at the third time domain location.
  • the first node sends or receives a reference signal based on the determined configuration information.
  • the second node sends one or more kinds of configuration information to the first node, and the configuration information respectively instructs the first node to receive or send a reference signal at a specific time domain location.
  • the second node sends the fourth instruction information to the first node, so that the first node determines which configuration information to use based on the fourth instruction information.
  • the first node uses the determined configuration information to receive or send the reference signal at a specific time domain location. So as to meet the orthogonalization requirements of IAB nodes for sending and receiving reference signals.
  • the above-mentioned resource configuration device includes hardware structures and/or software modules corresponding to each function.
  • the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.
  • the embodiment of the present application may divide the resource configuration device into functional modules based on the foregoing method examples.
  • each functional module may be divided corresponding to each function, or two or more functions may be integrated into one sending module.
  • the above-mentioned integrated modules can be implemented in the form of hardware or software functional modules. It should be noted that the division of modules in the embodiments of the present application is illustrative, and is only a logical function division, and there may be other division methods in actual implementation.
  • FIG. 8 is a schematic diagram of an embodiment of the resource configuration device in an embodiment of this application.
  • the resource allocation device 800 includes:
  • the receiving module 801 is configured to receive first configuration information sent by a second node, where the first configuration information is associated with a first timing pattern of a mobile terminal MT of the first node, and the first configuration information instructs the first node to send uplink The first time domain position of the reference signal;
  • the sending module 802 is configured to send an uplink reference signal to the second node based on the first configuration information, and the second node is an upper node or a host node of the first node.
  • the first timing mode includes:
  • Timing mode 6 or timing mode 7.
  • the first configuration information includes:
  • the first configuration information further includes:
  • the first configuration information when the uplink reference signal is a demodulation reference signal DMRS, the first configuration information further includes one or more of the following information:
  • Demodulation reference signal DMRS configuration type information additional DMRS time domain location information, DMRS sequence initialization parameters, DMRS sequence type information, pre-configured code division multiplexing group identification, and unused code division multiplexing group identification.
  • the receiving module 801 is further configured to receive second configuration information sent by the second node, where the second configuration information indicates the second time domain position of the uplink reference signal sent by the first node in the second timing mode, and the second timing Modes include timing mode 1.
  • the receiving module 801 is further configured to receive first indication information sent by the second node, where the first indication information is used to indicate the timing mode adopted by the first node;
  • the sending module 802 is further configured to use the first configuration information to send an uplink reference signal when the first indication information indicates a first timing mode;
  • the sending module 802 is further configured to use the second configuration information to send an uplink reference signal when the first indication information indicates a second timing mode.
  • the processing module 803 is configured to determine the timing mode to be used based on the first parameter carried in the first indication information and the transmission mode parameter set, where:
  • the transmission mode parameter set is configured by the second node.
  • the transmission mode parameter set includes a first transmission mode parameter and/or a second transmission mode parameter.
  • the first transmission mode parameter is associated with the first timing mode
  • the second transmission mode parameter is associated with the first timing mode.
  • the transmission mode parameter is associated with the second timing mode.
  • the sending module 802 is configured to send a configuration information request to the second node, where the configuration information request is used to request the second node to configure an orthogonalized port for the first node.
  • the receiving module 801 is configured to be configured by the second node with a first port set, the first port set includes a port set or a reserved port set, and the ports in the first port set are orthogonalized.
  • the first configuration information is carried in unicast signaling
  • the second configuration information is carried in broadcast signaling.
  • FIG. 9 is a schematic diagram of another embodiment of a resource configuration device in an embodiment of this application.
  • the resource allocation device 900 includes:
  • the sending module 901 is configured to send first configuration information to a first node, the first configuration information being associated with a first timing pattern of a mobile terminal MT of the first node, and the first configuration information instructing the first node to send an uplink reference
  • the first time domain position of the signal, the second node is the superior node or the host node of the first node;
  • the receiving module 902 is configured to receive an uplink reference signal sent by the first node, where the uplink reference signal is an uplink reference signal sent by the first node to the second node based on the first configuration information.
  • the first timing mode includes:
  • Timing mode 6 or timing mode 7.
  • the first configuration information includes:
  • the first configuration information further includes:
  • the first configuration information when the uplink reference signal is a demodulation reference signal DMRS, the first configuration information further includes one or more of the following information: demodulation reference signal DMRS configuration type information , Time domain location information of additional DMRS, DMRS sequence initialization parameters, DMRS sequence type information, pre-configured code division multiplexing group identification, and unused code division multiplexing group identification.
  • the sending module 901 is further configured to send second configuration information to the first node, the second configuration information indicating the second time domain position of the first node to send the uplink reference signal in the second timing mode, and the second timing mode Including timing mode 1.
  • the sending module 901 is further configured to send first indication information to the first node, where the first indication information is used to instruct the first node to use the first timing mode.
  • the sending module 901 is further configured to configure a transmission mode parameter set to the first node, where the transmission mode parameter set is configured by the second node, and the transmission mode parameter set includes the first transmission mode parameter, and/or the second transmission A mode parameter, the first transmission mode parameter is associated with the first timing mode, and the second transmission mode parameter is associated with the second timing mode.
  • the first indication information includes a first parameter, so that the first node determines the timing mode adopted by the first node based on the first parameter and the transmission mode parameter set.
  • the receiving module 902 is further configured to receive a configuration information request sent by the first node, where the configuration information request is used to request the second node to configure an orthogonalized port for the first node.
  • the sending module 901 based on the configuration information request, is further configured to configure a first port set to the first node.
  • the first port set includes a port set or a reserved port set, and the ports in the first port set are orthogonalized.
  • the first configuration information is carried in unicast signaling
  • the second configuration information is carried in broadcast signaling.
  • the resource configuration device provided in an embodiment of the present application may also be used to execute the embodiment shown in FIG. 5a to FIG. 7b.
  • An embodiment of the present application also provides a computer-readable storage medium, including instructions, which when run on a computer, cause the computer to execute the embodiment shown in Figs. 5a-7b.
  • An embodiment of the present application also provides a computer program product.
  • the computer program product includes computer program code.
  • the computer program code runs on a computer, the computer executes the embodiment shown in FIGS. 5a-7b.
  • An embodiment of the present application also provides a chip including a memory and a processor, the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that the processor executes the above Figures 5a-7b show an embodiment.
  • the resource configuration device in the foregoing embodiment may be a network device, or may be a chip applied to the network device or other combination devices, components, etc. that can realize the functions of the foregoing network device.
  • the receiving module and the sending module may be transceivers, the transceiver may include an antenna and a radio frequency circuit, etc., and the processing module may be a processor, such as a baseband chip.
  • the receiving module and the sending module may be radio frequency units, and the processing module may be a processor.
  • the resource configuration device is a chip system
  • the receiving module may be the input port of the chip system
  • the sending module may be the output interface of the chip system
  • the processing module may be the processor of the chip system, for example: central processing unit (CPU) ).
  • CPU central processing unit
  • the processor included in the network device also has the following functions:
  • first configuration information sent by a second node Receiving first configuration information sent by a second node, the first configuration information being associated with a first timing pattern of a mobile terminal MT of the first node, and the first configuration information instructing the first node to send an uplink reference signal ’S first time domain position;
  • the processor is also used to execute methods such as steps 501-504, steps 601-608, steps 701-706, and steps S1-S6, for example:
  • the first timing mode includes: timing mode 6 or timing mode 7.
  • the first configuration information includes: the symbol index of the start position of the uplink reference signal, or the offset of the start position of the uplink reference signal.
  • the first configuration information further includes: indication information of the first timing mode.
  • the first configuration information further includes one or more of the following information: demodulation reference signal DMRS configuration type information, additional DMRS time domain location information, DMRS sequence initialization parameters, DMRS sequence type information, pre-configured code division multiplexing group identification, and unused code division multiplexing group identification.
  • the processor is further configured to receive second configuration information sent by the second node, where the second configuration information indicates a second time domain position at which the first node sends an uplink reference signal in a second timing mode, and
  • the second timing mode includes timing mode 1.
  • the processor is further configured to receive first indication information sent by the second node, where the first indication information is used to indicate the timing mode adopted by the first node;
  • the processor is further configured to use the first configuration information to send an uplink reference signal when the first indication information indicates a first timing mode;
  • the processor is further configured to use the second configuration information to send an uplink reference signal when the first indication information indicates a second timing mode.
  • the processor is specifically configured to determine the timing mode to be used based on the first parameter carried in the first indication information and a transmission mode parameter set, where the transmission mode parameter set is configured by the second node, so
  • the transmission mode parameter set includes a first transmission mode parameter and/or a second transmission mode parameter, the first transmission mode parameter is associated with the first timing mode, and the second transmission mode parameter is related to the second timing Mode association.
  • the processor is further configured to send a configuration information request to the second node, where the configuration information request is used to request the second node to configure an orthogonalized port for the first node.
  • the processor is further configured to be configured by the second node with a first port set, where the first port set includes a port set or a reserved port set, and the ports in the first port set are orthogonalized.
  • the first configuration information is carried in unicast signaling; the second configuration information is carried in broadcast signaling.
  • the processor included in the network device also has the following functions:
  • the first configuration information is associated with the first timing pattern of the mobile terminal MT of the first node, and the first configuration information instructs the first node to send the uplink reference signal A first time domain location, the second node is an upper node or a host node of the first node;
  • the uplink reference signal is an uplink reference signal sent by the first node to the second node based on the first configuration information.
  • the processor is also used to execute methods such as steps 501-504, steps 601-608, steps 701-706, and steps S1-S6, for example:
  • the first timing mode includes: timing mode 6 or timing mode 7.
  • the first configuration information includes: the symbol index of the start position of the uplink reference signal, or the offset of the start position of the uplink reference signal.
  • the first configuration information further includes: indication information of the first timing mode.
  • the first configuration information further includes one or more of the following information: demodulation reference signal DMRS configuration type information, time domain location information of additional DMRS, DMRS sequence Initialization parameters, DMRS sequence type information, pre-configured code division multiplexing group identification, and unused code division multiplexing group identification.
  • the processor is further configured to send second configuration information to the first node, where the second configuration information indicates a second time domain position at which the first node sends an uplink reference signal in a second timing mode, and the first node Two timing modes include timing mode 1.
  • the processor is further configured to send first indication information to the first node, where the first indication information is used to instruct the first node to adopt the first timing mode.
  • the processor is further configured to configure a transmission mode parameter set to the first node, wherein the transmission mode parameter set is configured by the second node, and the transmission mode parameter set includes the first transmission mode parameter, and/or A second transmission mode parameter, the first transmission mode parameter is associated with the first timing mode, and the second transmission mode parameter is associated with the second timing mode.
  • the first indication information includes a first parameter, so that the first node determines the timing mode adopted by the first node based on the first parameter and the transmission mode parameter set.
  • the processor is further configured to receive a configuration information request sent by the first node, where the configuration information request is used to request the second node to configure an orthogonalized port for the first node.
  • the processor is further configured to configure a first port set to the first node based on the configuration information request.
  • the first port set includes a port set or a reserved port set, and the ports in the first port set are ⁇ .
  • the first configuration information is carried in unicast signaling; the second configuration information is carried in broadcast signaling.
  • the present application also provides a communication system, which includes one or more network devices.
  • the processor in the embodiment of the present application may be an integrated circuit chip with signal processing capability.
  • the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software.
  • the above-mentioned processor may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (Field Programmable Gate Array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP Digital Signal Processor
  • ASIC application specific integrated circuit
  • FPGA Field Programmable Gate Array
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
  • the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), and electrically available Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache.
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • DDR SDRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • Enhanced SDRAM, ESDRAM Enhanced Synchronous Dynamic Random Access Memory
  • Synchronous Link Dynamic Random Access Memory Synchronous Link Dynamic Random Access Memory
  • DR RAM Direct Rambus RAM
  • the embodiment of the present application also provides a computer-readable medium on which a computer program is stored, and when the computer program is executed by a computer, the resource configuration method of any of the foregoing method embodiments is implemented.
  • the embodiment of the present application also provides a computer program product, which, when executed by a computer, implements the resource configuration method of any of the foregoing method embodiments.
  • the device embodiments described above are only illustrative, and the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physically separate.
  • the physical unit can be located in one place or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of the solutions of the embodiments.
  • the connection relationship between the modules indicates that they have a communication connection between them, which may be specifically implemented as one or more communication buses or signal lines.
  • this application can be implemented by software plus necessary general hardware. Of course, it can also be implemented by dedicated hardware including dedicated integrated circuits, dedicated CPUs, and dedicated memories. Dedicated components and so on to achieve. Under normal circumstances, all functions completed by computer programs can be easily implemented with corresponding hardware. Moreover, the specific hardware structures used to achieve the same function can also be diverse, such as analog circuits, digital circuits or special purpose circuits. Circuit etc. However, for this application, software program implementation is a better implementation in more cases.
  • the technical solution of this application essentially or the part that contributes to the existing technology can be embodied in the form of a software product, and the computer software product is stored in a readable storage medium, such as a computer floppy disk. , U disk, mobile hard disk, ROM, RAM, magnetic disk or optical disk, etc., including several instructions to make a computer device execute the method described in each embodiment of this application.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a dedicated computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the computer instructions may be measured from a website, a computer, and a positioning reference signal.
  • the device, computing equipment or data center through wired (such as coaxial cable, optical fiber, Digital Subscriber Line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) to another website site, computer, measurement and positioning reference signal Device, computing device or data center for transmission.
  • the computer-readable storage medium may be any usable medium that can be stored by a computer, or a device for measuring positioning reference signals integrated with one or more usable media, or a data storage device such as a data center.
  • the usable medium may be a magnetic medium, (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)).
  • one embodiment or “an embodiment” mentioned throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of the present application. Therefore, the appearances of "in one embodiment” or “in an embodiment” in various places throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. It should be understood that in the various embodiments of the present application, the size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not correspond to the embodiments of the present application. The implementation process constitutes any limitation.
  • system and “network” in this article are often used interchangeably in this article.
  • the term “and/or” in this article is only an association relationship describing the associated objects, which means that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, exist alone B these three situations.
  • the character "/" in this text generally indicates that the associated objects before and after are in an "or” relationship.
  • B corresponding to A means that B is associated with A, and B can be determined based on A.
  • determination of B based on A does not mean that B is determined only based on A, and B can also be determined based on A and/or other information.
  • the disclosed system, device, and method can be implemented in other ways.
  • the device embodiments described above are merely illustrative, for example, the division of units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or integrated. To another system, or some features can be ignored, or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected based on actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit can be implemented in the form of hardware or software functional unit.
  • the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of the present application essentially or the part that contributes to the existing technology or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , Including several instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods in the various embodiments of the present application.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
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Abstract

La présente invention concerne un procédé de configuration de ressources et un nœud de réseau. Le nœud de réseau envoie un signal de référence de liaison montante à un nœud supérieur (ou un nœud hôte) sur la base d'informations de configuration de signal de référence spécifiques, et les informations de configuration spécifique sont associées à un mode de synchronisation spécifique de façon à satisfaire une exigence d'orthogonalisation d'un nœud IAB pour la réception et l'envoi d'un signal de référence dans un nouveau scénario de mode de synchronisation. Par conséquent, l'efficacité spectrale d'un nœud IAB est améliorée et la capacité globale d'un réseau IAB est améliorée.
PCT/CN2021/094814 2020-05-21 2021-05-20 Procédé de configuration de ressources et nœud de réseau WO2021233369A1 (fr)

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CN114286434A (zh) * 2021-12-16 2022-04-05 中国信息通信研究院 一种全双工iab上行传输方法和设备
CN117321944A (zh) * 2022-04-27 2023-12-29 北京小米移动软件有限公司 一种映射方法/装置/设备及存储介质
WO2023220898A1 (fr) * 2022-05-16 2023-11-23 北京小米移动软件有限公司 Procédé et appareil d'indication d'informations, dispositif, et support de stockage

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