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WO2020164591A1 - Configuration d'informations et procédé de pré-application de ressources, dispositif, nœud et support d'enregistrement - Google Patents

Configuration d'informations et procédé de pré-application de ressources, dispositif, nœud et support d'enregistrement Download PDF

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Publication number
WO2020164591A1
WO2020164591A1 PCT/CN2020/075280 CN2020075280W WO2020164591A1 WO 2020164591 A1 WO2020164591 A1 WO 2020164591A1 CN 2020075280 W CN2020075280 W CN 2020075280W WO 2020164591 A1 WO2020164591 A1 WO 2020164591A1
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Prior art keywords
iab node
iab
threshold
node
status report
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English (en)
Chinese (zh)
Inventor
刁雪莹
陈琳
罗薇
邹伟
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ZTE Corp
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ZTE Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0278—Traffic management, e.g. flow control or congestion control using buffer status reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]

Definitions

  • This application relates to the field of communication technology, and in particular to a method, device, node, and storage medium for information configuration and resource pre-application.
  • 5G network has a transmission speed hundreds of times faster than 4G network.
  • the reason why 5G can achieve high transmission speed is the use of millimeter waves.
  • Millimeter waves refer to electromagnetic waves with wavelengths on the order of millimeters, and their frequencies are approximately between 30 GHz and 300 GHz.
  • One of the characteristics of the millimeter wave frequency band is that the attenuation in the air is large, and the diffraction ability is weak.
  • IAB integrated access and backhaul links
  • FIG. 1 An example of a network deployed with IAB is shown in Figure 1, where 1, 2, and 3 are nodes, there is a wired connection between node 1 and the core network, and access nodes 2 and 3 send and receive data to the core network through node 1.
  • User Equipment UE
  • UE User Equipment
  • IAB nodes The access nodes that support wireless access in the IAB network and perform wireless backhaul of data are called IAB nodes (IAB nodes), such as access nodes 2 and 3 in FIG. 1.
  • IAB nodes IAB nodes
  • the access node that provides the wireless backhaul function for the IAB node so that the UE is connected to the core network is called an IAB donor (IAB donor), such as the access node 1 in FIG. 1.
  • the access node 2 may send data received from the UE to the access node 1 through a wireless backhaul link, and then the access node 1 sends the UE data to the core network element.
  • the core network element can send the UE data packet to the access node 1, and then the access node 1 sends the UE data to the access node 2 through the wireless backhaul link, and the access node 2 sends the UE data through the access link. The data is sent to the UE.
  • FIG. 2 is a schematic diagram of an IAB deployment scenario with CU/DU separation.
  • the IAB node 1 can have a DU-like function and a MT (Mobile Terminal) similar function, where MT is also a UE-like function.
  • the IAB node accesses two parent IAB nodes through dual connections.
  • the scheduling process completed by the IAB node includes: when the IAB node has uplink data to send, it sends a scheduling request (Scheduling Request, SR) to its previous node to apply for uplink resources , And then use the requested uplink resource UL grant to send a Buffer Status Report (BSR) to apply for uplink resources for sending uplink data.
  • SR scheduling request
  • BSR Buffer Status Report
  • the information configuration and resource pre-application method, device, node, and storage medium provided by the embodiments of the present invention solve the problem of large uplink scheduling delay of IAB nodes in an IAB network.
  • embodiments of the present invention provide a self-access and backhaul resource pre-application method in an IAB network, including:
  • the IAB node When the IAB node detects that the uplink resource pre-application condition is met, it generates an uplink resource pre-application request, where the uplink resource pre-application request includes a pre-sent buffer status report;
  • the IAB node sends the uplink resource pre-application request to its corresponding parent IAB node to request the parent IAB node to pre-allocate corresponding uplink resources for it.
  • the embodiments of the present invention also provide a method for information configuration in an IAB network, including:
  • the information configuration instruction includes at least one of the following information:
  • the preset data type, the first hop count threshold, the second hop count threshold, the third hop count threshold, the first priority threshold, the second priority threshold, the pre-application cache threshold, the occupied cache threshold, the LCG of the IAB node and its children The mapping relationship between the LCG of the IAB node, the pre-allocated uplink resource ratio value, the IAB node routing table, the uplink data volume threshold, the priority and/or weight of the IAB node's preset cost metric parameters, the first pre-application shunt ratio, The first maximum cache threshold, the uplink sending indication parameter, the first master maximum cache threshold, the first auxiliary maximum cache threshold, the weight threshold, the second master maximum cache threshold, the second auxiliary maximum cache threshold, the second pre-application split ratio , The second largest cache threshold.
  • an embodiment of the present invention also provides a resource pre-application device in an IAB network, which is applied to an IAB node, and includes:
  • a trigger processing module configured to generate an uplink resource pre-application request when it is detected that the pre-application condition of the uplink resource is satisfied, the uplink resource pre-application request includes a pre-sent buffer status report;
  • the pre-application module is configured to send the uplink resource pre-application request to the parent IAB node corresponding to the IAB node, so as to request the parent IAB node to pre-allocate corresponding uplink resources for the IAB node.
  • an embodiment of the present invention also provides an information configuration device in an IAB network, which is applied to an IAB host, including:
  • the information configuration module is used to send an information configuration instruction to the IAB node, where the information configuration instruction includes at least one of the following information:
  • the preset data type, the first hop count threshold, the second hop count threshold, the third hop count threshold, the first priority threshold, the second priority threshold, the pre-application cache threshold, the occupied cache threshold, the LCG of the IAB node and its children The mapping relationship between the LCG of the IAB node, the pre-allocated uplink resource ratio value, the IAB node routing table, the uplink data volume threshold, the priority and/or weight of the IAB node's preset cost metric parameters, the first pre-application shunt ratio, The first maximum cache threshold, the uplink sending indication parameter, the first master maximum cache threshold, the first auxiliary maximum cache threshold, the weight threshold, the second master maximum cache threshold, the second auxiliary maximum cache threshold, the second pre-application split ratio , The second largest cache threshold.
  • an embodiment of the present invention also provides an IAB node, including a first processor, a first memory, and a first communication bus;
  • the first communication bus is used to connect the first processor and the first memory
  • the first processor is configured to execute the first computer program stored in the first memory to implement the steps of the method for pre-applying resources in the IAB network as described above.
  • an embodiment of the present invention also provides an IAB host, including a second processor, a second memory, and a second communication bus;
  • the second communication bus is used to connect the second processor and the second memory
  • the second processor is configured to execute a second computer program stored in the second memory, so as to implement the steps of the information configuration method in the IAB network as described above.
  • embodiments of the present invention also provide a computer-readable storage medium, wherein the computer-readable storage medium stores one or more first computer programs, and the one or more first computer programs
  • a computer program can be executed by one or more processors to implement the steps of the resource pre-application method in the IAB network as described above;
  • the computer-readable storage medium stores one or more second computer programs, and the one or more second computer programs can be executed by one or more processors to implement the method for information configuration in an IAB network as described above A step of.
  • the IAB node in the IAB network can be configured through the information configuration instruction; when the IAB node detects that the pre-application condition of the uplink resource is satisfied, Generate an uplink resource pre-application request.
  • the uplink resource pre-application request includes a pre-sent buffer status report; the IAB node sends the uplink resource pre-application request to its corresponding parent IAB node to request the parent IAB node to pre-allocate the corresponding
  • the uplink resource that is, the IAB node can obtain the uplink resource in advance, so that when it has uplink data to send, it can directly use the pre-applied uplink resource for transmission, thereby reducing the uplink scheduling delay of the IAB node and improving communication efficiency and users Experience.
  • Figure 1 is a schematic diagram of IAB network networking
  • Figure 2 is a schematic diagram of an IAB deployment scenario
  • Figure 3 is a schematic diagram of an IAB node uplink scheduling process
  • FIG. 4 is a schematic flowchart of a method for pre-applying resources in an IAB network according to the first embodiment of the present invention
  • FIG. 5 is a schematic diagram 1 of the MAC CE format of the third embodiment of the present invention.
  • Fig. 6 is a schematic diagram 2 of the MAC CE format of the third embodiment of the present invention.
  • FIG. 7 is the third schematic diagram of the MAC CE format of the third embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a resource pre-application device in an IAB network according to the fifth embodiment of the present invention.
  • Fig. 9 is a schematic structural diagram of an information configuration device in an IAB network according to the fifth embodiment of the present invention.
  • FIG. 10 is a schematic diagram of the structure of an IAB node according to the sixth embodiment of the present invention.
  • FIG. 11 is a schematic diagram of the structure of an IAB host in the sixth embodiment of the present invention.
  • This embodiment provides a method for implementing uplink resource pre-application in IAB network elements, thereby reducing the uplink scheduling delay of IAB nodes, and improving communication efficiency and user experience. As shown in Figure 4, it includes:
  • the IAB node (IAB node) generates an uplink resource pre-application request when detecting that the uplink resource pre-application condition is satisfied, and the uplink resource pre-application request includes a pre-sent buffer status report.
  • the pre-sent buffer status report Pre-BSR may be used for characterization, but it should be understood that the specific characterization abbreviation can be flexibly changed.
  • the IAB node may have at least one of the DU-like function and the MT (Mobile Terminal) similar function, that is, the IAB node in this embodiment may include IAB node DU and IAB node MT At least one of them.
  • the IAB node that accesses the IAB node in S401 is called the child IAB node (that is, child IAB node), and the IAB node that the IAB node in S401 accesses is called the parent IAB node (that is, parent IAB node). node). Therefore, it should be understood that the IAB node here in this embodiment may be the parent IAB node of a certain child IAB node, or may be the child IAB node of a certain parent IAB node.
  • a certain IAB node when a certain IAB node is connected to a UE, it can be referred to as an accessing IAB node (ie accessing IAB node) to the UE.
  • an accessing IAB node ie accessing IAB node
  • the MT of a certain IAB node When the MT of a certain IAB node generates its own data, its parent
  • the IAB node can also be referred to as an access IAB node.
  • the DU of each IAB node may all belong to the CU of the IAB host.
  • the CU hosted by the IAB can configure the IAB node by sending information configuration instructions to the DU or MT corresponding to each IAB node.
  • the information configuration instruction may include but is not limited to at least one of the following information:
  • Preset data type the first hop count threshold, the second hop count threshold, the third hop count threshold, the first priority threshold, the second priority threshold, whether the pre-sent buffer status report is forwarded or not; pre-application cache Threshold, occupancy cache threshold, mapping relationship between LCG of IAB node and LCG of its child IAB node, pre-allocated uplink resource ratio value, IAB node routing table, uplink data volume threshold, priority of IAB node's preset cost measurement parameters And/or weight, first pre-application split ratio, first maximum cache threshold, uplink transmission indication parameter, first master maximum cache threshold, first auxiliary maximum cache threshold, weight threshold, second master maximum cache threshold, first The second auxiliary maximum cache threshold, the second pre-application split ratio, and the second maximum cache threshold.
  • pre-application cache Threshold occupancy cache threshold, mapping relationship between LCG of IAB node and LCG of its child IAB node, pre-allocated uplink resource ratio value, IAB node routing table, uplink data volume threshold, priority of IAB node's prese
  • the IAB node sends the generated uplink resource pre-application request to its corresponding parent IAB node to request the parent IAB node to pre-allocate corresponding uplink resources.
  • detecting whether the pre-application conditions for uplink resources are met may include:
  • the first IAB node After the first IAB node receives the uplink data from the UE or the sub-IAB node generates the uplink data or receives the buffer status report from the UE or the sub-IAB node, it determines whether the uplink resource pre-application conditions are based on at least one of the following Satisfy:
  • LCG Logical Channel Group
  • the LCG with a priority higher than the first priority threshold is configured To support the pre-sent buffer status report;
  • all LCGs of the first IAB node are configured to support the pre-sent buffer status report.
  • the specific values of the first hop count threshold and the second hop count threshold can be flexibly set, and the first hop count threshold may be equal to or different from the second hop count threshold.
  • the first hop count threshold and the second hop count threshold can both be set to 2, 3, or 4, etc.
  • the preset data type may include but is not limited to at least one of the following:
  • Control plane data latency sensitive user plane data; data whose number of hops experienced by the IAB host is greater than or equal to the third hop threshold.
  • the specific value of the third hop count threshold can also be flexibly set, and can be equal to or different from the first hop count threshold and/or the second hop count threshold.
  • the first IAB node may be an access IAB node.
  • the UE or the IAB node MT may apply for uplink resources by sending a BSR.
  • the specific processing can be done as follows:
  • the CU has a higher priority in the access IAB node MT (for example, the priority is higher than the first priority) (Threshold) LCG is configured with Pre-BSR; if the number of hops between the access IAB node and the IAB donor is large (for example, greater than or equal to the second hop threshold), the CU configures Pre-BSR for all LCGs in the access IAB node MT. After the access IAB node receives the BSR, it can determine whether to trigger the Pre-BSR according to the configuration of the CU.
  • the access IAB node receives the uplink data packet generated by the UE or the IAB node MT, it determines whether to trigger the Pre-BSR according to the configuration of the CU.
  • the Pre-BSR at this time can only be sent to the next-level IAB node (upstream IAB node) in the format of Pre-BSR Media Access Control Control Elements (MAC CE). That is, the parent IAB node), which is used to notify the upstream IAB node that it can pre-apply for uplink resources for the data packet.
  • MAC CE Media Access Control Control Elements
  • detecting whether the pre-application conditions for uplink resources are met may include:
  • the second IAB node determines whether the pre-application conditions for uplink resources are met according to at least one of the following:
  • Pre-BSRbufferthreshold the buffer size reported in the received pre-sent buffer status report is greater than the pre-BSR buffer threshold (Pre-BSRbufferthreshold), and the current occupied buffer size is greater than the occupied buffer threshold (BSRbufferthreshold), determine the upstream resource The application conditions are met;
  • the second IAB node may be a parent IAB node (Parent IAB node).
  • the parent IAB node may decide whether to forward the Pre-BSR to Its own parent IAB node (that is, grandparent IAB node), for example:
  • the parent IAB node does not forward the Pre-BSR
  • the parent IAB node constructs a Pre-BSR based on the resources allocated by its child IAB node, and reports it to the grandparent IAB node;
  • the CU can configure the occupied buffer threshold bufferthreshold and the pre-applied buffer threshold Pre-BSRbufferthreshold for the IAB node. If the buffer size reported by the Pre-BSR is greater than the Pre-BSR buffer threshold, and the buffer size of the parent node is greater than the buffer threshold, the parent node constructs the Pre-BSR based on the resources allocated to its child IAB node and reports it to the grandparent IAB node;
  • the parent IAB node may also construct a Pre-BSR based on the resources that can be allocated to its child IAB node when the priority of the LCG that reports the Pre-BSR is higher (for example, higher than the second priority threshold). , And report it to the grandparent IAB node.
  • the IAB node generating the uplink resource pre-application request in S401 includes:
  • Determining the LCG for reporting the pre-sent buffer status report includes determining according to but not limited to at least one of the following methods:
  • the IAB node When the IAB node receives the pre-sent buffer status report reported by its child IAB node, it is determined according to the logical channel (LCH) in the LCG used by its child IAB node to report the pre-sent buffer status report. For example, in an example, it may include determining according to at least one of the following methods:
  • the LCG of the IAB node inferred from the LCH with the highest priority for data transmission is used as the LCG for the IAB node to report the pre-sent buffer status report;
  • the LCG of the IAB node inferred from the LCH with the middle priority of data transmission is used as the LCG for the IAB node to report the pre-sent buffer status report;
  • the long Pre-BSR MAC CE determines the LCG of each LCG of the IAB node that is used as the IAB node to report the Pre-BSR, and each LCG equally divides the amount of virtual data to be reported.
  • the LCG for reporting the pre-sent buffer status report is determined according to the mapping relationship between the LCG of the IAB node and the LCG of its child IAB nodes.
  • the CU may configure the mapping relationship between the sub-IAB node LCG and the IAB node LCG.
  • IAB node triggers Pre-BSR based on the mapped LCG.
  • the Pre-BSR supported by the IAB node includes but is not limited to at least one of the following: Regular Regular Pre-BSR, Padding Pre-BSR, Periodic Periodic Pre-BSR, among which three types of Pre-BSR trigger The conditions are shown in Table 1.
  • the LCG that reports the Pre-BSR has the highest priority.
  • the IAB node determines the LCH that triggers the Pre-BSR, and reports the Pre-BSR based on the LCG where the LCH is located, which may include but is not limited to any one of the following:
  • Solution 1 When the child IAB node reports the Pre-BSR, it carries the logical channel identifier (LCID) of the LCH with the highest priority for data transmission in the reported LCG;
  • LCID logical channel identifier
  • Solution 2 When the child IAB node reports the Pre-BSR, it carries the LCID of the LCH with the middle (ie center) priority of data transmission in the reported LCG;
  • Solution 3 When the child IAB node reports the Pre-BSR, it carries the LCIDs of all LCHs that have data transmission in the reported LCG, and finds the corresponding egress RLC (Radio Link Control, Radio Link Control Protocol) channels based on the LCID. In view of these egress RLC channels may correspond to different LCGs, you can set:
  • the virtual data volume that needs to be applied for is equally distributed to the LCG that can be reported;
  • the virtual data volume to be applied for is equally distributed to each LCG for reporting.
  • Pre-BSR can also support but is not limited to at least one of the following three types: Pre-BSR: Regular Pre-BSR, Padding Pre-BSR, Periodic Pre-BSR, three types of Pre-BSR triggering The conditions are shown in Table 2 below.
  • the LCH that triggers the Pre-BSR can be set to have the highest priority.
  • the IAB node in S401 allocates uplink resources to its child IAB node or UE, it also includes filling the allocated data amount into the corresponding virtual buffer.
  • the IAB node In some application scenarios, due to data packet retransmission, or delay-sensitive data packets may be discarded at the adaptation layer, or RLF (Radio Link Failure) in the child IAB node, the IAB node actually needs
  • the uplink resources are often smaller than the uplink resources that need to be pre-applied.
  • the CU can issue a pre-allocated uplink resource ratio (ul-PreResourceRatio) to the IAB node.
  • the amount of data allocated by the IAB node is equal to the amount of data actually allocated multiplied by Take the pre-allocated uplink resource ratio value, where the pre-allocated uplink resource ratio value is generally less than or equal to 1, and its specific value can be flexibly set according to specific application scenarios.
  • the MT of the IAB node may maintain a virtual buffer for each LCG/LCH. If the child IAB node or UE has RLF, clear the virtual buffer corresponding to the child IAB node or UE; if the parent IAB node has allocated pre-applied resources, subtract the virtual buffer’s moderate data volume; if the child IAB node or UE’s The data volume has arrived, and the corresponding data volume in the virtual buffer is subtracted.
  • the IAB node MT maintains a virtual buffer for each LCG/LCH. If an RLF occurs in a child node/UE or the parent node has allocated pre-resources, the data volume of the virtual buffer is reduced; if the data of the child node/UE has arrived, the corresponding data volume in the virtual buffer is reduced.
  • the IAB node in this embodiment can pre-apply for the corresponding uplink resource from the corresponding parent IAB node through the Pre-BSR mechanism, so that when it has uplink data to be sent, it can directly use the pre-applied uplink resource for transmission, thereby reducing IAB
  • the node's uplink scheduling delay improves communication efficiency and user experience.
  • this embodiment is based on the exemplified content of the above-mentioned embodiment, and further exemplifies the description.
  • the uplink resource pre-application request generated by the IAB node can be sent in, but not limited to, the MAC-CE format. And in this embodiment, it can be sent by being carried in a MAC PDU (Protocol Data Unit, protocol data unit).
  • MAC PDU Protocol Data Unit, protocol data unit
  • the MAC-CE format used for the uplink resource pre-application request in this embodiment is characterized by Pre-BSR MAC-CE. But it should be understood that its characterization mode can be flexibly set.
  • SR when the UL grant received by the IAB node can accommodate all pending data in the uplink buffer, but is not enough to accommodate the Pre-BSR MAC-CE and its corresponding subheader, SR can be triggered.
  • the IAB node may also include: when the IAB node detects that its corresponding child IAB node or UE meets the buffer status report modification condition that triggers the pre-sending, generating a modified pre-request
  • the sent buffer status report (which can be characterized by Modified Pre-BSR in this embodiment) is modified, wherein the buffer size in the modified pre-sent buffer status report indicates the amount of data to be cancelled.
  • the pre-sent buffer status report modification condition may include but is not limited to at least one of the following:
  • the IAB node detects that its corresponding child IAB node or UE has a radio link failure RLF;
  • the IAB node detects that its corresponding child IAB node or UE data packet needs to be retransmitted
  • the IAB node detects that delay-sensitive data packets are discarded.
  • the IAB node when the IAB node detects that the child IAB node or UE has RLF, or the child IAB node or UE data packet needs to be retransmitted.
  • the IAB node triggers the Modified Pre-BSR, and uses the logical channel identifier LCID to indicate that the reported Pre-BSR is Modified Pre-BSR, and the buffer size in the Modified Pre-BSR indicates the amount of modified data.
  • the Modified Pre-BSR MAC CE can be in the same format as the normal Pre-BSR MAC CE; of course, the two formats can also be set to be inconsistent according to requirements.
  • the IAB node can also dynamically update the number of pre-applied resources, so as to reduce the uplink scheduling delay of the IAB node and improve resource utilization.
  • this embodiment is based on the exemplified content of the above-mentioned embodiment, and further exemplifies the description.
  • the design of the MAC-CE format (ie, Pre-BSR MAC-CE) adopted by the uplink resource pre-application request is illustrated.
  • the adopted MAC-CE format Pre-BSR MAC-CE can continue to use BSR MAC-CE, which can minimize changes and improve the utilization of MAC-CE.
  • the Pre-BSR MAC-CE continues to use the existing BSR MAC CE, and the data volume reported by the Pre-BSR is reported by the ordinary BSR together with the data volume of the MT RLC.
  • a BSR the BSR can reflect all the data volume to be transmitted
  • all BSRs triggered before the MAC PDU assembly is cancelled, and the Pre-BSR is also cancelled.
  • the adopted MAC-CE format Pre-BSR MAC-CE can be obtained by modifying the existing BSR MAC CE format.
  • the IAB node can still construct a BSR MAC CE for reporting. Specifically, it includes any one of the following:
  • the LCID can be used to indicate that the reported Pre-BSR is long Pre-BSR or long truncated Pre-BSR.
  • FIG. 6 For another example, for short Pre-BSR Pre-BSR MAC CE and short truncated Pre-BSR MAC CE, an implementation manner is shown in FIG. 6, where the Pre-BSR and BSR can share the same LCG. Another implementation manner is shown in FIG. 7. In FIG. 7, different LCGs can be used for the Pre-BSR and the BSR.
  • the LCID indicates that the reported Pre-BSR is short Pre-BSR MAC CE or short truncated Pre-BSR MAC CE.
  • a Pre-BSR (the Pre-BSR can reflect all the data volume to be transmitted) is included in a MAC PDU to be transmitted, all Pre-BSRs triggered before the MAC PDU is assembled are cancelled.
  • the adopted MAC-CE format Pre-BSR MAC-CE can be a newly constructed MAC-CE, and the logical channel identifier LCID can be used to identify that it belongs to Pre-BSR MAC CE.
  • the newly constructed Pre-BSR MAC-C format and BSR MAC CE may be the same or different.
  • the priority relationship between the Pre-BSR MAC CE and other MAC CEs can be set to facilitate management and scheduling.
  • a priority relationship can be set as follows (the priority decreases from top to bottom):
  • priority relationship can be flexibly set according to specific application requirements.
  • a Pre-BSR (the Pre-BSR can reflect all the data volume to be transmitted) is included in a MAC PDU to be transmitted, all Pre-BSRs triggered before the MAC PDU is assembled will be cancelled.
  • the MAC-CE format used for the uplink resource pre-application request can be flexibly set, which improves the flexibility of the uplink resource pre-application and is more conducive to its implementation and management.
  • this embodiment is based on the example content of the foregoing embodiment, and illustrates the situation when the IAB node is a multi-connected node.
  • the IAB node routing table of the IAB node it is possible to determine which of its multiple parent IAB nodes to report the pre-sent buffer status report.
  • determining which of its multiple parent IAB nodes to report the pre-sent buffer status report according to the IAB node routing table of the IAB node may include but is not limited to:
  • the IAB node's child IAB node or UE specifies the next hop specific parent IAB node in the IAB node routing table, it is determined to report the pre-sent buffer status report to the specified parent IAB node.
  • the child IAB node of the IAB node or the UE does not specify the next hop specific parent IAB node in the IAB node routing table, it is determined according to at least one of the following:
  • the upstream data volume threshold such as ul-DataVolumeThreshold
  • the priority and/or weight of the preset cost measurement parameter of the IAB node determine which of the parent IAB nodes to report the pre-sent buffer status report.
  • the foregoing first preset rule may include but is not limited to at least one of the following:
  • the first pre-application split ratio for example, the first Pre-BSRsplitRatio
  • the first pre-application split ratio can be set to 1:1, At this time, the amount of data reported to the master IAB node and the amount of data reported to the auxiliary IAB node are equal;
  • the master IAB node Reports the amount of data less than or equal to the first maximum buffer threshold (for example, the first maxBufferSize) to the master IAB node, and report the remaining data amount to the auxiliary IAB node;
  • the first maximum buffer threshold for example, the first maxBufferSize
  • All the amount of data that needs to be applied for is reported to the master IAB node, so that the master IAB node and the auxiliary IAB node negotiate their allocated data amount.
  • the foregoing second preset rule may include but is not limited to at least one of the following:
  • the master uplink sending indication parameter (for example, ul-PreBSRMCG) of the master IAB node is a preset value (for example, true or 1), determine to report the pre-sent buffer status report to the master IAB node; if the auxiliary IAB node The node’s auxiliary uplink sending indication parameter (for example, ul-PreBSRSCG) takes a preset value (for example, true or 1), and determines to report the pre-reported buffer status report to the auxiliary IAB node;
  • the priority and/or weight of the cost metric of the preset cost metric parameter of the IAB node it is determined which of the parent IAB nodes to report the pre-sent buffer status report.
  • the foregoing preset cost metric parameter may include but is not limited to at least one of the following parameters:
  • the ratio of resources allocated by the master IAB node and the auxiliary IAB node to each of the IAB node after applying for resources from its parent IAB node last time.
  • the parent IAB nodes when determining which of the parent IAB nodes to report the pre-sent buffer status report according to the priority of the preset cost metric parameter of the IAB node, it may include:
  • the data volume constructs a new pre-sent buffer status report and reports it to the auxiliary IAB node;
  • the pre-sent buffer status report when sending the pre-sent buffer status report to the auxiliary IAB node, construct a new data volume for the part of the data that exceeds the first auxiliary maximum buffer threshold (for example, the first maxBufferSize-SCG)
  • the pre-sent buffer status report is reported to the master IAB node.
  • K1-K2 is greater than the weight threshold (for example, WeightThreshold)
  • the weight threshold for example, WeightThreshold
  • K2-K1 is greater than the weight threshold, determine to report the pre-sent buffer status report to the auxiliary IAB node, and construct a new pre-sent buffer for the amount of data that exceeds the second auxiliary maximum buffer threshold (for example, the second maxBufferSize-SCG) The status report is reported to the master IAB node;
  • the second pre-application split ratio ie, the second Pre-BSRsplitRatio
  • the second pre-application split ratio can be set to 1:1.
  • the amount of data reported to the master IAB node and the amount of data reported to the auxiliary IAB node are equal;
  • the second maximum buffer threshold ie, the second maxBufferSize
  • All the data volume that needs to be applied for is reported to the master IAB node, so that the master IAB node and the auxiliary IAB node negotiate their respective allocated data volumes.
  • the MT of the IAB node can determine which parent IAB node to send the Pre-BSR to. Specifically,
  • IAB node MT sends Pre-BSR according to the routing table;
  • the next hop corresponding to a child IAB node or UE in the IAB node routing table is MN&SN, that is, it is not specified to whom to report.
  • MN&SN The next hop corresponding to a child IAB node or UE in the IAB node routing table.
  • Solution 1 CU configuration parameter upstream data volume threshold ul-DataVolumeThreshold
  • Step 1 If the data volume reported by the Pre-BSR triggered by the IAB node is greater than or equal to ul-DataVolumeThreshold, the Pre-BSR can be sent to the MN and SN at the same time, for example:
  • the CU configures the first pre-application split ratio, that is, the first Pre-BSRsplitRatio parameter, which reflects the ratio of the Pre-BSR buffer size reported by the IAB node to the MN and SN;
  • the CU configures the first maximum buffer threshold, that is, the first maxBufferSize parameter, which reflects the upper limit of the Pre-BSR buffer size reported to the MN. If this upper limit is exceeded, the remaining data volume is applied to the SN ;
  • the IAB node sends the Pre-BSR to the MN, and the MN negotiates with the SN on how to allocate resources;
  • the IAB node sends the same Pre-BSR to the MN and SN.
  • Step 2 If the data volume reported by Pre-BSR is less than ul-DataVolumeThreshold, Pre-BSR only reports any one of MN and SN, for example:
  • the CU can configure the priority of each parameter in the cost metric, and the IAB node can decide to send the Pre-BSR based on the priority of the parameter;
  • the CU can also configure the weight of each parameter in the cost metric, and the IAB node can determine the transmission of the Pre-BSR through the weight calculation.
  • Solution 2 The IAB node directly decides the sending of Pre-BSR according to the cost metric, for example:
  • step 1 the CU configures the priority of each parameter in the cost metric, and the IAB node decides to send the Pre-BSR based on the priority of the parameter;
  • Step 2 The IAB node preferentially sends the Pre-BSR to the parent IAB node determined in step 1.
  • the CU configures the first maxBufferSize-MCG and the first maxBufferSize-SCG for the MN and the SN respectively. If the data volume exceeds the first maxBufferSize-MCG or the first maxBufferSize-SCG, the IAB node constructs a new Pre-BSR and reports another parent IAB node .
  • the CU configures the weight of each parameter in the cost metric, and the IAB node determines the sending of the Pre-BSR through the weight calculation, for example:
  • Step 1 The IAB node calculates the weighted result of MN and SN according to the weight of the parameters in the cost metric;
  • Step 2 CU configures WeightThreshold, second maxBufferSize-MCG and second maxBufferSize-SCG. For example, after weight calculation, the result of MN is K1, and the result of SN is K2. If K1-K2>WeightThreshold or K2-K1>WeightThreshold, Pre-BSR reports MN or SN, which exceeds the second maxBufferSize-MCG or second maxBufferSize-SCG Data volume, the IAB node constructs a new Pre-BSR and reports to another parent IAB node;
  • the sent decision of the parent IAB node can include but is not limited to any of the following:
  • the CU configures the second pre-application split ratio, that is, the second Pre-BSRsplitRatio parameter, which reflects the ratio of the Pre-BSR buffer size reported by the IAB node to the MN and SN;
  • the CU configures the second maximum buffer threshold, that is, the second maxBufferSize parameter, which reflects the upper limit of the Pre-BSR buffer size reported to the MN. If this upper limit is exceeded, the remaining data volume is applied to the SN ;
  • the IAB node sends the Pre-BSR to the MN, and the MN negotiates with the SN on how to allocate resources;
  • the IAB node reports the same Pre-BSR to the MN and SN.
  • this embodiment can flexibly determine the amount of data that the IAB node reports to the master IAB node and the auxiliary IAB node in a variety of ways, which is more conducive to flexible control according to current specific application requirements and improve resources. Utilization rate.
  • This embodiment also provides a device for pre-applying resources in an IAB network, which is applied to an IAB node, as shown in FIG. 8, including:
  • the trigger processing module 801 is configured to generate an uplink resource pre-application request when it detects that the pre-application conditions for uplink resources are met.
  • the uplink resource pre-application request includes a pre-sent buffer status report; the specific detection and generation process can use the above The process shown in the embodiment will not be repeated here.
  • the pre-application module 802 is configured to send the uplink resource pre-application request generated by the trigger processing module 801 to the parent IAB node corresponding to the IAB node to request the parent IAB node to pre-allocate corresponding uplink resources for the IAB node.
  • the specific sending process can use the processes shown in the foregoing embodiments, which will not be repeated here.
  • This embodiment also provides an information configuration device in an IAB network, which is applied to an IAB host. As shown in FIG. 9, it includes an information configuration module 901 for sending an information configuration instruction to the IAB node to configure the IAB node, where The information configuration instruction includes but is not limited to at least one of the following information:
  • Preset data type the first hop count threshold, the second hop count threshold, the third hop count threshold, the first priority threshold, the second priority threshold, whether the pre-sent buffer status report is forwarded or not; pre-application cache Threshold, occupancy cache threshold, mapping relationship between LCG of IAB node and LCG of its child IAB node, pre-allocated uplink resource ratio value, IAB node routing table, uplink data volume threshold, priority of IAB node's preset cost measurement parameters And/or weight, first pre-application split ratio, first maximum cache threshold, uplink transmission indication parameter, first master maximum cache threshold, first auxiliary maximum cache threshold, weight threshold, second master maximum cache threshold, first The second auxiliary maximum cache threshold, the second pre-application split ratio, and the second maximum cache threshold.
  • pre-application cache Threshold occupancy cache threshold, mapping relationship between LCG of IAB node and LCG of its child IAB node, pre-allocated uplink resource ratio value, IAB node routing table, uplink data volume threshold, priority of IAB node's prese
  • the information configuration module 901 can be sent through one information configuration instruction or multiple information configuration instructions according to demand.
  • the device for pre-applying resources in the IAB network can pre-apply for the corresponding uplink resource for the IAB node from the corresponding parent IAB node through the Pre-BSR mechanism, so that when the IAB node has uplink data to send, it can directly Use pre-applied uplink resources for transmission, thereby reducing the uplink scheduling delay of IAB nodes, and improving communication efficiency and user experience.
  • Embodiment 6 is a diagrammatic representation of Embodiment 6
  • This embodiment also provides an IAB node. As shown in FIG. 10, it includes a first processor 1001, a first memory 1002, and a first communication bus 1003;
  • the first communication bus 1003 is used to implement a communication connection between the first processor 1001 and the first memory 1002;
  • the first processor 1001 may be used to execute one or more first computer programs stored in the first memory 1002 to implement the steps of the method for pre-applying resources in the IAB network in the above embodiments.
  • the trigger processing module and the pre-application module of the resource pre-application device in the IAB network can be implemented by the processor 1002.
  • This embodiment also provides an IAB host, as shown in FIG. 11, which includes a second processor 1101, a second memory 1102, and a second communication bus 1103;
  • the second communication bus 1103 is used to implement a communication connection between the second processor 1101 and the second memory 1102;
  • the second processor 1101 may be used to execute one or more second computer programs stored in the second memory 1102 to implement the steps of the information configuration method in the IAB network in the above embodiments.
  • the information configuration module 901 of the information configuration device in the IAB network can be implemented by the processor 1102.
  • This embodiment also provides a computer-readable storage medium, which is included in any method or technology for storing information (such as computer-readable instructions, data structures, computer program modules, or other data). Volatile or non-volatile, removable or non-removable media.
  • Computer-readable storage media include but are not limited to RAM (Random Access Memory), ROM (Read-Only Memory, read-only memory), EEPROM (Electrically Erasable Programmable read only memory, charged Erasable Programmable Read-Only Memory) ), flash memory or other memory technology, CD-ROM (Compact Disc Read-Only Memory), digital versatile disk (DVD) or other optical disk storage, magnetic cassettes, magnetic tapes, magnetic disk storage or other magnetic storage devices, Or any other medium that can be used to store desired information and can be accessed by a computer.
  • the computer-readable storage medium in this embodiment may be used to store one or more first computer programs, and the one or more first computer programs may be executed by one or more processors to achieve the above The steps of the method for pre-applying resources in the IAB network in each embodiment.
  • the computer-readable storage medium in this embodiment may be used to store one or more second computer programs, and the one or more second computer programs may be executed by one or more processors to implement The steps of the information configuration method in the IAB network in the above embodiments are the same.
  • This embodiment also provides a first computer program (or computer software).
  • the first computer program can be distributed on a computer-readable medium and executed by a computable device to implement the IAB shown in the above embodiments. At least one step of the method for pre-applying resources in the network; and in some cases, at least one step shown or described may be executed in a different order than described in the foregoing embodiment.
  • This embodiment also provides a second computer program (or computer software).
  • the second computer program can be distributed on a computer-readable medium and executed by a computable device to implement the IAB shown in the above embodiments. At least one step of the information configuration method in the network; and in some cases, at least one step shown or described may be performed in a different order than described in the foregoing embodiment.
  • This embodiment also provides a computer program product, including a computer readable device on which the first computer program and/or the second computer program as shown above are stored.
  • the computer-readable device in this embodiment may include the computer-readable storage medium as shown above.
  • communication media usually contain computer-readable instructions, data structures, computer program modules, or other data in a modulated data signal such as carrier waves or other transmission mechanisms, and may include any information delivery medium. Therefore, this application is not limited to any specific hardware and software combination.

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Abstract

Les modes de réalisation de la présente invention concernent une configuration d'informations et un procédé de pré-application de ressources, un dispositif, un nœud et support d'enregistrement. Un nœud IAB dans un réseau IAB est configuré par l'intermédiaire d'une instruction de configuration d'informations, lorsque le nœud IAB détecte qu'un critère de pré-application pour une ressource de liaison montante est satisfait, une demande de pré-application de ressource de liaison montante est générée, la demande de pré-application de ressource de liaison montante comprenant un rapport d'état de zone tampon pré-transmise ; le nœud IAB transmet la demande de pré-application de ressource de liaison montante à un nœud IAB parent correspondant pour demander au nœud IAB parent d'attribuer à l'avance une ressource de liaison montante correspondante au nœud IAB, c'est-à-dire que le nœud IAB peut obtenir la ressource de liaison montante à l'avance, de telle sorte que, lorsque le nœud IAB a des données de liaison montante qui doivent être transmises, la ressource de liaison montante appliquée à l'avance est utilisée directement pour la transmission, réduisant ainsi un retard de planification de liaison montante du nœud IAB, et améliorant l'efficacité de communication et l'expérience d'utilisateur.
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