WO2020164546A1 - Procédé de traitement d'informations dans un réseau iab, iab et support de stockage informatique - Google Patents

Procédé de traitement d'informations dans un réseau iab, iab et support de stockage informatique Download PDF

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Publication number
WO2020164546A1
WO2020164546A1 PCT/CN2020/075101 CN2020075101W WO2020164546A1 WO 2020164546 A1 WO2020164546 A1 WO 2020164546A1 CN 2020075101 W CN2020075101 W CN 2020075101W WO 2020164546 A1 WO2020164546 A1 WO 2020164546A1
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Prior art keywords
iab
iab node
information
node
donor
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PCT/CN2020/075101
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English (en)
Chinese (zh)
Inventor
陈琳
刁雪莹
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中兴通讯股份有限公司
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • 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
    • H04W28/0289—Congestion control
    • 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
    • H04W28/10—Flow control between communication endpoints
    • 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]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management

Definitions

  • the embodiment of the present invention relates to the field of communication technology, for example, to an information processing method in an IAB network, an IAB and a computer storage medium.
  • 5G network has a theoretical peak transmission speed of up to tens of Gb per second, which is hundreds of times faster than that of 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. For this reason, self-access backhaul links (IAB, integrated access and backhaul links) technology has been proposed.
  • IAB integrated access and backhaul links
  • FIG. 1 An example of a network deployed with integrated access and backhaul links is shown in Figure 1, where A, B, and C are all access nodes. There is a wired connection between node A and the core network, and access nodes B and C send and receive data to the core network through node A. User equipment can access nodes A, B, and C through an access link. Data can be transmitted between access nodes through a wireless backhaul link.
  • IAB node An access node in a network of integrated access and backhaul links that supports user equipment (User Equipment, UE) wireless access and performs wireless backhaul of data is called an IAB node (IAB node).
  • the access node that provides the wireless backhaul function for the IAB node so that the UE connects to the core network is called an IAB donor (IAB donor).
  • IAB donor The access node that provides the wireless backhaul function for the IAB node so that the UE connects to the core network.
  • IAB donor IAB donor
  • Access link and backhaul link can use the same or different carrier frequencies.
  • support for centralized unit (CU)/distributed unit (DU) separate deployment is an important technical feature in NR, so it is also necessary to support the IAB function in the CU/DU separate deployment scenario.
  • Figure 2 is a schematic diagram of an IAB deployment scenario with CU/DU separation.
  • the IAB node can have a DU-like function and a mobile terminal (Mobile Terminal, MT)-like function, and the MT part is also a UE-like function.
  • the IAB node accesses two parent IAB nodes through dual connections.
  • the information processing method in the IAB network and the IAB computer storage medium provided by the embodiments of the present invention solve the problem of how to realize information transmission in the IAB scenario.
  • the embodiment of the present invention provides an information processing method in an IAB network, including:
  • the first IAB node sends the first data packet to the IAB host donor.
  • the embodiment of the present invention also provides an information processing method in an IAB network, which includes: an IAB node sends flow control information to a parent node.
  • the IAB node accessed by the IAB node as the connection identity is called the parent IAB node
  • the embodiment of the present invention also provides an information processing method in an IAB network, including one of the following:
  • the IAB host donor CU sends downlink information to the IAB host donor DU;
  • the IAB host donor CU sends downlink information to the IAB node
  • the parent IAB node forwards downlink information to the IAB node
  • the downlink information message includes a radio resource control (Radio Resource Control, RRC) message, or an F1 Application Protocol (F1 Application Protocol, F1AP) message.
  • RRC Radio Resource Control
  • F1 Application Protocol F1 Application Protocol
  • the embodiment of the present invention also provides an information processing method in an IAB network, which includes the self-access backhaul link IAB node sending information to the next hop IAB node of the IAB node.
  • An embodiment of the present invention also provides an IAB, which is characterized in that the IAB includes a processor, a memory, and a communication bus, wherein:
  • the communication bus is used to realize the connection and communication between the processor and the memory
  • the processor is configured to execute one or more computer programs stored in the memory to implement at least one step in the information processing method in the IAB network as described above.
  • An embodiment of the present invention also provides a computer storage medium, the computer storage medium stores one or more programs, and the one or more programs can be executed by one or more processors to implement the above-mentioned IAB network At least one step in an information processing method.
  • the first data packet is acquired through the first IAB node; the first IAB node sends the first data packet to the IAB host donor, that is, the first The IAB node realizes the forwarding of data packets; the flow control information is sent to the parent node through the IAB node, that is, the flow control information is sent, thereby alleviating the congestion in the IAB network; the IAB host donor CU sends the downlink information to the IAB host donor DU; the IAB host The donor CU sends downlink information to the IAB node; the parent IAB node forwards the downlink information to the IAB node; the downlink information message includes an RRC message or an F1AP message; realizes resource coordination in the IAB network by sending downlink information.
  • Figure 1 is a schematic diagram of a network of integrated access and backhaul links
  • Figure 2 is a schematic diagram of an IAB deployment scenario with CU/DU separation
  • FIG. 3 is a schematic flowchart of an information processing method in an IAB network according to the first embodiment of the present invention
  • FIG. 4 is a schematic diagram of a control plane (CP) protocol stack design of an alternative 2 (alternative 2) of the fifth embodiment of the present invention
  • FIG. 5 is a schematic diagram of uplink control signaling forwarding processing according to Embodiment 5 of the present invention.
  • FIG. 6 is the forwarding processing of downlink control signaling according to Embodiment 5 of the present invention.
  • FIG. 7 is a schematic diagram of the design of the CP protocol stack of alternative 4 in the sixth embodiment of the present invention.
  • FIG. 8 is a schematic diagram of uplink control signaling forwarding processing according to Embodiment 6 of the present invention.
  • FIG. 9 is the forwarding processing of downlink control signaling according to Embodiment 6 of the present invention.
  • FIG. 10 is a schematic diagram of hop-by-hop flow control according to Embodiment 8 of the present invention.
  • FIG. 11 is a schematic diagram of bearer mapping between terminal bearers and Backhaul Radio Link Control (BH RLC) bearers according to Embodiment 8 of the present invention.
  • BH RLC Backhaul Radio Link Control
  • FIG. 12 is a schematic diagram of bearer mapping between BH RLC bearers according to Embodiment 8 of the present invention.
  • FIG. 13 is a schematic diagram of an IAB handover scenario according to Embodiment 10 of the present invention.
  • FIG. 14 is a schematic diagram of the structure of an IAB according to Embodiment 11 of the present invention.
  • this embodiment provides an information processing method in an IAB network.
  • the information processing method in the IAB network includes:
  • the first IAB node obtains the first data packet.
  • the first data packet may be the RRC message sent by the UE received by the first IAB node, or the RRC message generated by the MT of the first IAB node itself, or the first data packet.
  • the adaptation layer header includes at least one of the following information: target node information; IAB node identifier Information; the control signaling/data carried by the IAB node generated and/or forwarded carries flag information; the control plane to which the first data packet belongs bears the identity. For example, adding an adaptation layer header including the IAB donor for the first data packet; for example, adding an adaptation layer header including flag information for signaling forwarded by the IAB node to the first data packet.
  • the first IAB node sends the first data packet to an IAB host donor.
  • the first IAB node may be directly connected to the IAB donor, or may be connected to the IAB donor through other intermediate IAB nodes. Therefore, the first IAB node can directly send the first data packet to the IAB host donor; the first data packet sent by the first IAB node is forwarded to the IAB host donor through one or more intermediate nodes, for example, the IAB node 1 obtains the first data packet. After a data packet, it is forwarded to the IAB host donor through IAB node 2 and IAB node 3.
  • the IAB host donor may also encapsulate the first data packet into an F1AP message, and the F1AP message includes: the encapsulated packet data convergence protocol (Packet Data Convergence Protocol, PDCP) Protocol Data Unit (Protocol Data Unit, PDU) corresponding to the IAB node identification and bearer identification information.
  • PDCP Packet Data Convergence Protocol
  • PDU Protocol Data Unit
  • this embodiment provides an information processing method in the IAB network.
  • Information processing methods in the IAB network include
  • the first IAB node sends flow control information to the parent node.
  • the IAB node accessed by the IAB node as the connection identity is called the parent IAB node.
  • the flow control information includes at least one of the following information: one or more bearer identifiers; one or more logical channel identifiers; user equipment UE identifiers or node identification information of IAB nodes; required buffer size information; required Data rate desired data rate information; flow control indication. It is understandable that the flow control information sent by the first IAB node may be flow control information corresponding to the IAB node, or flow control information corresponding to the user equipment UE.
  • the required buffer size information includes at least one of the following: the required buffer size corresponding to the UE bearer or logical channel; the required buffer size corresponding to the bearer of the IAB node or the logical channel; required
  • the data rate desired data rate information includes at least one of the following: a desired data rate corresponding to a UE's bearer or logical channel; a desired data rate corresponding to the bearer or logical channel of the IAB node.
  • this embodiment provides an information processing method in an IAB network.
  • the information processing method in the IAB network includes: IAB host donor CU sends downlink information to IAB host donor DU; or, IAB host donor CU sends downlink Information to the IAB node; or, the parent IAB node forwards the downlink information to the IAB node.
  • the downlink information message is an RRC message or an F1AP message.
  • the IAB host donor DU can be directly connected to the IAB node, or it can be connected to the IAB node through other intermediate IAB nodes, so when the IAB host donor CU sends downlink information to the IAB node, it can be the IAB host donor
  • the CU sends downlink information to the IAB host donor DU, and forwards the downlink information to the IAB node through the IAB host donor DU; or the IAB host donor CU sends the downlink information to the IAB host donor DU, and the IAB host donor DU
  • the downlink information is sent to the next hop node after one or more hops, and the downlink information is forwarded to the IAB node through the next hop node.
  • the IAB host donor CU sends the F1AP message to the IAB node after generating the F1AP message;
  • the F1AP message includes at least one of the following information: target node information; control plane bearer identification to which the F1AP message belongs Information; IAB host donor DU configuration information; IAB node DU configuration information.
  • the configuration information of the IAB donor DU includes: the IAB host donor DU receives the mapping relationship between the Internet Protocol (IP) address and the IAB node DU identifier, so that the corresponding adapt layer can be encapsulated, so the IAB host donor DU can be based on IP
  • IP Internet Protocol
  • the address is identified by the IAB node DU, and then the downlink information is sent to the IAB node; or, the routing table of the IAB host donor DU contains the mapping relationship between the destination IP address and the next hop IAB node identifier, and the downlink information can be sent to the corresponding The IAB node.
  • the IAB node DU configuration information includes: DH, DS, UH, US, FH, FH, and FS corresponding to each symbol resource of the IAB node DU, not available indication, the IAB node DU configuration
  • the information can be used for DU to determine the uplink and downlink resource allocation on the child BH link and child access link.
  • the parent IAB node DU adds an adaptation layer header to the downlink information, and the adaptation layer header includes: MT termination information.
  • the IAB donor CU when the downlink information includes an RRC message, the IAB donor CU generates an RRC message, and sends the RRC message to the IAB node.
  • the RRC message includes at least one of the following information: the semi-static frame of the IAB node
  • the structure for example, includes cell-specific (cell-specific) and UE-specific frame structure configurations; the semi-static resource configuration of the IAB node, for example, type 2 for Down Link (type 2 for DL) ), type 1 and 2 for uplink (Up Link, UL); the semi-static frame structure of the terminal UE, such as cell-specific and UE-specific frame structure configuration and semi-static resource configuration; and then the IAB donor CU
  • the IAB node resources are coordinated through the RRC message.
  • An embodiment of the present invention provides an information processing method in an IAB network, and the information processing method in an IAB network includes:
  • the IAB node sends information to the next hop IAB node of the IAB node.
  • the IAB node includes any one of UE, IAB node DU, IAB node MT, IAB child node, IAB node, IAB parent node, and IAB host donor.
  • the next hop node is the IAB host donor; for example, when downlink information is sent, when the IAB node includes the IAB parent node, the next hop node is the IAB node, for example, the IAB node sends information to the IAB host donor; and For example, the IAB host donor sends information to the IAB node.
  • the information sent by the IAB node to the next hop IAB node of the IAB node is also different.
  • the uplink message generated and/or forwarded by the IAB carries flag information including: whether the adaptive subheader of the IAB node carries It is the indication information of MT signaling, and/or whether it is the indication information of forwarding signaling; it is understandable that when the indication information of MT signaling is included, it means that the uplink control signaling/uplink data is generated by IAB;
  • the instruction information for forwarding signaling is included, it indicates that the uplink control signaling/uplink data is forwarded by the IAB to other IABs.
  • the uplink message generated and/or forwarded by the IAB may also include flag information: the adaptive subheader of the next-hop IAB node carries the encapsulated control signaling corresponding to the IAB node and signaling radio bearer (Sigaling Radio Bearer, SRB) identification information.
  • SRB Signaling Radio Bearer
  • IAB1 sends first information to IAB2, and the first information includes information indicating whether it is MT signaling, and/or whether it is forwarding signaling;
  • IAB2 sends second information to IAB3, and the second information includes encapsulation The identification information of the IAB node and SRB corresponding to the control signaling.
  • the identification information of the IAB node and the SRB includes at least one of the following: gNB-CU UE F1AP identification (Identifier, ID), gNB-DU UE F1AP ID, MT) cell radio network temporary identity (Cell-Radio) Network Temporary Identifier (C-RNTI) and NR Cell Global Identifier (NCGI), SRB ID information.
  • ID gNB-CU UE F1AP identification
  • gNB-DU UE F1AP ID gNB-DU UE F1AP ID
  • MT cell radio network temporary identity
  • C-RNTI Cell-Radio Network Temporary Identifier
  • NCGI NR Cell Global Identifier
  • the IAB node includes an IAB donor, and the information includes the downlink message generated and/or forwarded by the IAB carries flag information; the downlink message generated and/or forwarded by the IAB carries flag information including the IAB donor CU carried in the F1AP message
  • the IAB donor DU After the IAB donor DU receives the F1AP message, it parses out the IAB node identifier and the SRB identifier contained inside; The adaptation subheader encapsulates the IAB node identifier and the SRB identifier, and forwards the F1AP message to the next hop IAB node. That is, after the IAB donor DU receives the F1AP message, it implements the routing and forwarding function according to the SRB identifier and the IAB node identifier, and forwards it to the next hop IAB node.
  • the next hop AB node receives the data sent by IAB donor DU After the packet, when it is determined that the IAB node identifier is inconsistent with itself, the next hop IAB node will deliver the RRC message contained in the parsed F1AP message to the adaptation layer; in some embodiments, the next hop IAB node will parse it out After the RRC message contained in the F1AP message is delivered to the adaptation layer, the next-hop IAB node adds an MT termination indication in the adaptation layer subheader.
  • the uplink data packet generated and/or forwarded by the IAB is delivered to the SRB indicated by adapt for PDCP decryption, and then delivered to the F1AP entity pair corresponding to the IAB node2 DU
  • the F1AP message content is analyzed.
  • the information may also be flow control information, which is used to relieve congestion in the IAB network; where the flow control information includes: the terminal UE bearer or the LCID corresponding to the IAB node, the desired buffer size, and/or data rate; at this time, after the IAB node sends information to the next hop IAB node of the IAB node, the next hop IAB node receives the flow control information, determines the remaining buffer size, the desired buffer size value is 0, and stops scheduling the logic Channel data; and/or determine that the remaining buffer size desired buffer size is greater than 0, for RLC acknowledged mode (Acknowledged Mode, AM), calculate the total amount of data from TX_Next_Ack-1; for RLC unacknowledged mode (UM), follow Calculation of the amount of data to be dispatched.
  • RLC acknowledged mode Acknowledged Mode, AM
  • the flow control information includes whether there is flow control information carried by the adaptive layer, or directly indicates whether there is a desired data rate and/or whether there is a desired buffer size.
  • the IAB node sending information to the next hop IAB node of the IAB node includes that the IAB node detects that the buffer of a certain UE bearer or BH RLC channel (channel) exceeds a given threshold.
  • One-hop IAB node sends the required buffer size desired data rate; or, the IAB node detects that the buffer size of the corresponding BH RLC channel is less than a given threshold, and sends a flow control stop instruction to the next-hop IAB node; or, the IAB node detects If the buffer size of the corresponding BH RLC channel is less than the given threshold, set the desired buffer size or desired data rate to the maximum allowable value.
  • the flow control information includes the desired buffer size and/or desired data rate carried by the terminal or BH RLC; in some embodiments, the flow control information includes the desired buffer size and/or desired data rate carried by the terminal or BH RLC. In addition to the buffer size and/or desired data rate, it may also include terminal identification information, such as UE and data radio bearer (Data Radio Bearer, DRB) identification information.
  • terminal identification information such as UE and data radio bearer (Data Radio Bearer, DRB) identification information.
  • the flow control information when the IAB node learns the ratio of the downlink data transmitted by the terminal carrying the BH RLC bearer to the overall transmission data volume of the BH RLC bearer mapped to the terminal, the flow control information includes the ratio of the desired buffer size to the transmission data volume. Quotient, or the quotient of desired data rate and desired data rate. In some embodiments, the flow control information includes the sum of the desired buffer size or desired data rate of all terminals that are mapped to the BH RLC bearer.
  • the IAB node adapts the data packets it generates and the data forwarded, and carries it in the F1AP message and the adapt subheader.
  • the information is taken as an example to describe the IAB network control signaling processing method; as shown in Figure 4, Figure 4 is a schematic diagram of the alternative CP protocol stack design, Figure 4(a) shows the UE’s RRC message sending process. Figure 4(b) shows the RRC message transmission processing of the MT, and Figure 4(c) shows the processing of the F1-AP of the DU.
  • the adapt layer subheader of the MT part carries indication information for distinguishing control signaling.
  • IAB node 1 can process the control signaling sent by IAB node 2 from Figure 4(a) and Figure 4(b).
  • the adapt layer subheader By carrying indication information for distinguishing control signaling in the adapt layer, for each uplink data packet, the adapt layer subheader carries the indication information of whether the uplink data packet is MT signaling or whether it is an indication of forwarding signaling, Let IAB node1 perform differentiated processing.
  • IAB node 1 receives uplink data packet 1 of IAB node 2, and the adapt layer subheader of IAB node 2 MT part contains an indication that the uplink data packet 1 is MT signaling, it means that the uplink data packet 1 is IAB The data generated by node 2 itself; in the same way, when the adapt layer sub-header contains the indication that the uplink data packet 1 is forwarding signaling, it means that the uplink data packet 1 is a data packet of the UE forwarded by IAB node 2.
  • the F1AP message of the IAB donor CU carries identification information of the IAB node MT and SRB corresponding to the inner PDCP PDU.
  • the F1AP layer refers to the F1AP of the F1-C interface between the donor DU and the donor CU,
  • the F1AP message carries the identification information of the IAB node MT and SRB corresponding to the inner PDCP PDU.
  • the donor DU can obtain the identification information of the IAB node and SRB through adapt layer, that is, the donor DU obtains the identification information of the IAB node and SRB, and carries it in the F1AP message and sends it to the IAB donor CU-CP .
  • identification information of IAB node and SRB includes any one of the following:
  • the IAB donor CU delivers the uplink data packet to the corresponding F1AP entity.
  • the uplink data packet is delivered to the corresponding F1AP entity after step 502, that is, the uplink data packet is delivered to the F1AP entity according to the information carried in the F1AP message.
  • IAB donor CU needs to associate IAB node 2 DU with IAB node 2 MT part. Therefore, in addition to the gNB DU ID in the F1 setup request message, it can also include the corresponding IAB node 2 MT part. C-RNTI and corresponding NR CGI information.
  • the collocated gNB DU ID is carried in the RRC signaling sent by the IAB node 2 MT part to the IAB donor CU.
  • the IAB donor CU After the IAB donor CU generates the control signaling that is planned to be sent to the IAB node2 DU, it determines which SRB of the collocated IAB node 2 MT to forward the control signaling to.
  • the IAB donor CU delivers to the collocated IAB node 2 PDCP entity corresponding to the SRB for encryption.
  • the IAB donor CU maps and delivers the PDCP PDU to the F1-C interface between the IAB donor CU and the IAB donor DU for F1AP encapsulation, and carries the SRB identifier and the IAB node identifier corresponding to the embedded F1AP message in the F1AP message.
  • the IAB node identifier may be the IAB node DU identifier or the corresponding IAB node MT identifier.
  • the IAB donor DU After receiving the F1AP signaling, the IAB donor DU parses out the IAB node identifier and the corresponding SRB identifier contained inside.
  • the IAB donor includes the IAB node identifier and the corresponding SRB identifier in the adapt header (header) after the parsing process, which is used for the routing and forwarding function; that is, the IAB donor adds the F1AP to the information carried in the adapt header.
  • the signaling is sent to IAB node 2 MT. It should be noted that in order to ensure the successful transmission of F1AP signaling, the identification type information carried by the adapt layer needs to be consistent with the routing table.
  • the IAB node 2 MT After the IAB node 2 MT receives the F1AP signaling, it determines different processing procedures according to the IAB node identifier included in the adapt layer.
  • the F1AP signaling will be delivered to the SRB indicated by the adapt for PDCP decryption, and then delivered to the F1AP entity corresponding to the IAB node2DU to analyze the content of the F1AP message. .
  • the IAB node DU When the target IAB node identification information contained in the adapt layer is inconsistent with itself, the IAB node DU will deliver the RRC message contained in the parsed F1AP message to the adapt layer, that is, continue to deliver the RRC message to IAB node2 and add a new adapt layer. At this time, the adapt header only needs to indicate whether the message is MT terminated, and no other routing information is required.
  • whether to use the alternative 2 IAB node CP protocol stack can be configured by the operator. For example, when the IAB node DU establishes an F1 connection with the IAB donor CU, the IAB node DU obtains the PDCP-based security indication configuration from the operator, and uses alternative 2. In some embodiments, it may also be considered that the IAB node DU reports the PDCP and/or Datagram Transport Layer Security (DTLS) based security capability indication to the CU, and then determines whether to adopt the alternative.
  • DTLS Datagram Transport Layer Security
  • Embodiment 6 is a diagrammatic representation of Embodiment 6
  • the IAB node performs adaptation processing on both the data packets it generates and the data forwarded, and the information carried in the F1AP message and the adapt subheader is taken as an example.
  • the network control signaling processing method is explained; as shown in Figure 7, Figure 7 is a schematic diagram of the alternative 4 CP protocol stack design, Figure 7(a) shows the UE’s RRC message sending process, and Figure 7(b) shows the MT RRC message sending processing, Fig. 7(c) shows the processing procedure of F1-AP of DU.
  • the adapt layer subheader of the MT part carries indication information for distinguishing control signaling.
  • the adapt layer subheader of the IAB node 2MT part needs to include an indication to inform the IAB node1 whether to deliver the uplink data packet to the F1AP layer or perform a forwarding operation.
  • the indication information includes an indication of whether the uplink data packet is MT signaling or whether it is an indication of forwarding signaling.
  • the adapt layer includes an indication of forwarding signaling, it means that the uplink data packet is that IAB node2 forwards the UE's uplink data packet to perform the forwarding operation; when the adapt layer includes an indication of MT signaling, it means that the uplink data packet is IAB node2 itself
  • the generated uplink data packets are delivered to F1AP layer.
  • IAB node1 adds the target DU information to the adapt header.
  • the IAB node1 completes F1AP message encapsulation, DTLS, SCTP, IP, and adapt encapsulation in the uplink
  • the adapt may include target DU information (such as indicating a certain donor DU, such as the donor DU in FIG. 7).
  • the target DU identification information is configured when the donor CU configures the routing table for the access IAB node; the corresponding one or more target donor DU identification information can be carried in the adapt.
  • the IAB donor DU receives the uplink data packet, determines that the target DU information in the adapt header is consistent with itself, removes the adapt header, and then sends the uplink data packet to the IAB donor CU.
  • the IAB donor CU receives the uplink data packet, it parses it, and when the F1AP message is parsed, it confirms the corresponding IAB node according to the gNB-CU UE F1AP ID and gNB-DU UE F1AP ID contained in the F1AP message DU, and deal with it accordingly.
  • the IAB donor CU in the initial F1 interface establishment phase, needs to associate the IAB node DU with the IAB node MT part, so it can be considered to carry the IAB DU status indication in the F1 setup request message and the corresponding The C-RNTI of the MT and the NR CGI corresponding to the cell the MT accesses.
  • the collocated gNB DU ID is carried in the RRC signaling sent by the IAB node 2 MT part to the IAB donor CU.
  • the IAB node DU may directly carry the IAB DU status indicator in the F1 setup request sent, as well as the corresponding C-RNTI of the MT and the NR CGI corresponding to the cell to which the MT is connected. In addition to carrying this information in the F1AP message, it can also be considered to carry the collocated gNB DUID in the RRC signaling sent by the IAB node 2 MT part to the IAB donor CU.
  • IAB donor CU generates the control signaling that is planned to be sent to the intermediate IAB node DU, generates the corresponding F1AP message, performs DTLS, Stream Control Transmission Protocol (SCTP), IP header encapsulation, and then routes through IP Sent to IAB donor DU.
  • SCTP Stream Control Transmission Protocol
  • the IAB donor CU has previously received the data packet forwarded by the IAB donor DU that corresponds to the intermediate IAB node DU as the source IP, so the IP routing table can record the corresponding reverse routing information accordingly.
  • the IAB donor DU After receiving the IP data packet, the IAB donor DU performs corresponding processing.
  • the IAB donor DU obtains the destination IAB node DU identifier according to the IP address in the IP routing, and encapsulates it in the adapt header, where the IAB donor DU has been configured with the IP address and the IAB node DU identifier. mapping relationship.
  • the routing table of the IAB donor DU includes the mapping relationship between the destination IP address and the next hop IAB node DU/MT ID, and the IAB donor DU sends the control signaling to the next hop IAB node according to the IP address information. Until it is forwarded to the IAB node DU with the same IP address as the destination IP address.
  • IAB node CP protocol stack can be configured by the operator. For example, when IAB node DU and IAB donor CU establish an F1 connection, when IAB node DU obtains the DTLS based security indication configuration from the operator, alternative 4 is used. In some embodiments, it may also be considered that the IAB node DU reports the PDCP and/or DTLS based security capability indication to the CU to determine whether to adopt the alternative 4.
  • a long-term congestion is present in an IAB network link, and the long-term congestion is relieved as an example for description.
  • the mitigation schemes that the IAB network can take include any of the following:
  • Method 1 DU sends flow control information to CU to relieve congestion.
  • the flow control information includes an indication of CU overload; it is understandable that when the CU creates a new DRB for the UE, the DU will perform admission control.
  • the DU can indicate its overload to the CU, and the CU accordingly adopts an overload reduction action (reduction action) to reduce the load; in some embodiments, the flow control signaling includes the DU requesting the release of a UE context, that is, The DU can also detect which Guaranteed Bit Rate (GBR) bearers cannot meet the demand and inform the CU. Finally, the DU can actively release the context of a certain UE.
  • GBR Guaranteed Bit Rate
  • the flow control signaling includes informing the CU that a certain DRB cannot meet the quality of service (QoS) requirements, that is, when the DU performs admission control, if the air interface resources cannot meet the requirements, the DU can directly inform the CU which DRB could not be successfully created.
  • QoS quality of service
  • Method 2 CU sends the following flow control signaling to NGC to relieve congestion.
  • the flow control signaling includes the CU requesting to release the context of a certain UE; in some embodiments, the flow control signaling includes the CU sending PDU session resource notification (session resource notification) , Notify NGC that it cannot meet the QoS requirements of a GBR QoS flow/PDU session, and may even need to be released; in some embodiments, the flow control signaling includes a CU requesting to modify an established PDU session.
  • Method 3 Adjust the network topology according to the long term congestion in the current IAB network to relieve congestion.
  • the CU switches some IAB node MTs to other parent DUs according to the measurement report and DU overload instruction; in some embodiments, when the route includes cost information, cost metric, then The design of cost metric can reflect congestion and thus potential delay; for example, a path with a smaller cost metric has less congestion; therefore, when an IAB node transmits data, choosing a path with a smaller cost metric for IAB node is equivalent to selecting congestion Fewer paths to achieve the effect of load balancing.
  • Embodiment 8 is a diagrammatic representation of Embodiment 8
  • Figure 10 is a schematic diagram of hop-by-hop flow control. It is understandable that for short term congestion, it usually occurs on the forwarding path of a certain hop. It is unlikely that the entire forwarding path will be congested, and hop-by-hop flow control is used for the intermediate IAB node within one hop. Therefore, it is more suitable for handling short-term congestion.
  • hop-by-hop flow control includes a 1:1 bearer mapping mechanism and an N:1 bearer mapping mechanism.
  • the 1:1 bearer mapping mechanism is adopted, for short-term congestion, the IAB network can take any of the following mitigation solutions:
  • Method 1 The UE bearer sends flow control information to its parent IAB through the MAC CE, and assigns a special LCID to the MAC CE.
  • the LCID indicates flow control information.
  • the MAC CE includes the LCID, desired buffer size, and/or data rate corresponding to the parent IAB link corresponding to the UE bearer.
  • the flow control information can be sent after the IAB node DU detects that the buffer of a DRB or BH RLC channel exceeds a given threshold and then sends the desired buffer size.
  • the parent IAB receives the flow control information, it is the LCID Allocating resources. It is worth noting that, depending on the value of the desired buffer size, the parent IAB allocates resources in different ways.
  • the parent IAB node DU stops scheduling the data of the logical channel; if the desired buffer size is greater than 0, the total amount of data is calculated from TX_Next_Ack-1 for the RLC AM mode; for the RLC UM mode, the total amount of data is calculated Calculate the amount of data scheduled to be sent.
  • the LCID in the flow control information is used to instruct the flow control to stop; or, the IAB node DU will either the desired buffer size or the desired data
  • the rate is set to the maximum allowable value.
  • the LCID may be used to instruct the flow control to stop.
  • Method 2 The IAB node sends an adapt layer carrying flow control related information to the parent IAB node DU.
  • the IAB node may send flow control information through the adaptation layer.
  • the IAB node adds an adapt layer control information to a corresponding bearer data packet to be forwarded to the parent IAB node DU.
  • the adapt layer control information is added only when the flow control instruction is performed. It is worth noting that in the adapt layer Need to add a bit to indicate whether there is flow control information, or directly indicate whether there is a desired data rate and/or whether there is a desired buffer size. It should be understood that after the Parent IAB node DU parses out the flow control information, it needs to be submitted to the MAC layer to assist in scheduling decisions. It is worth noting that the sending of flow control information specifically includes the following methods:
  • Method 1 The flow control information is sent after the IAB node DU detects that the buffer of a DRB or BH RLC channel exceeds a given threshold and then sends the desired buffer size. If the desired buffer size is 0, the parent IAB node stops on the RLC channel send data. Otherwise, it will be sent according to the specified buffer size.
  • Method 2 The IAB node DU detects that the buffer size of the corresponding BH RLC channel is less than a given threshold, and then sends a flow control stop instruction.
  • Method 3 The IAB node DU detects that the buffer size of the corresponding BH RLC channel is smaller than the given threshold, sets the buffer size to the maximum allowable value, and sends the desired data rate to the parent node. In some embodiments, when flow control is no longer needed, a flow control termination (termination) instruction is sent.
  • the N:1 bearer mapping mechanism includes bearer mapping between terminal bearers and BH RLC bearers; and bearer mapping between BH RLC bearers.
  • bearer mapping between terminal bearers and BH RLC bearers such as As shown in Figure 11, UE1 DRB1 and UE2 DRB1 are mapped to BH RLC bearer 1, and UE1 DRB2 is mapped to BH RLC bearer 2.
  • the IAB network can take any of the following mitigation solutions:
  • Method 1 Flow control information sent by IAB node 1 MT to IAB node 2 DU, which corresponds to the desired buffer size and/or desired data rate of UE1 DRB1. It is worth noting that the flow control information is sent through adapt corresponding to BH RLC bearer1 or indicated in MAC CE to correspond to BH RLC bearer1.
  • IAB node 1 MT sends flow control information to IAB node 2 DU, when IAB node 2 DU knows the UE bearer information in each data packet in the RLC buffer of BH RLC bearer 1, when IAB node 1 MT sends
  • the flow control information corresponds to the desired buffer size and/or desired data rate of UE1 DRB1
  • the flow control information also includes UE1 and DRB identification information
  • the flow control information can be sent through the adapt corresponding to BH RLC bearer1 or in MAC CE
  • the middle indication corresponds to BH RLC bearer 1.
  • the IAB node 2 DU When the IAB node 2 DU receives the information, it judges that the amount of data that can be scheduled to be sent corresponding to the UE1 DRB1 is determined by the desired buffer size or the desired data rate.
  • Method 3 When the IAB node 1 DU can perceive the proportion (x%) of the downlink data transmitted by the UE 1 DRB1 in the BH RLC bearer 1 overall transmission data volume (x%), then the IAB node 1 MT IAB node 1 MT sent to the IAB node 2 DU Flow control information.
  • the flow control information includes the quotient of the ratio of the desired buffer size to the amount of transmitted data, or the quotient of the desired data rate and the desired data rate.
  • Method 4 If a certain UE DRB is congested, the IAB node 1 MT counts the sum of the desired buffer size/desired data rate of all UEs mapped to the BH RLC bearer, and sends the flow control information to the IAB node 2 DU.
  • the control information includes the sum of the desired buffer size or desired data rate of all UE DRBs mapped to the BH RLC bearer.
  • the mitigation scheme that the IAB network can take includes any of the following:
  • Method 1 When the flow control information sent by the IAB node 2 MT to the IAB node 3 DU, the flow control information corresponds to the desired buffer size and/or desired data rate of the BH RLC bearer 3, the flow control information can be corresponded to by the BH RLC bearer1
  • the adapt sending of, or the indication in MAC CE corresponds to BH RLC bearer 1.
  • Method 2 When the IAB node 3 DU knows the UE bearer information corresponding to each packet in the RLC buffer of the BH RLC bearer 1, the flow control information sent by the IAB node 2 MT to the IAB node 3 DU corresponds to the flow control information When the desired buffer size and/or desired data rate of the BH RLC bearer 3, the flow control information also includes one or more UE bearer identification information mapped to the BH RLC bearer 3. Then the flow control information can be sent through adapt corresponding to BH RLC bearer1, or it can be indicated in MAC CE to correspond to BH RLC bearer 1. In some embodiments, the indication may also be reported through RRC signaling.
  • the IAB node 3 DU When the IAB node 3 DU receives the information, it determines the amount of data that the corresponding UE bearer set can schedule to send, which is determined by the desired buffer size or the desired data rate.
  • Method 3 When the IAB node 2 DU can perceive the proportion of the downlink data transmitted through the BH RLC bearer 3 (x%) of the overall transmission data volume of the BH RLC bearer 1, then the IAB node 2 MT sends the flow control information to the IAB node 3 DU
  • the flow control information includes the quotient of the ratio of the desired buffer size to the amount of transmitted data, or the quotient of the desired data rate and the desired data rate.
  • IAB node 2 MT counts the sum of all the downstream BH RLC bearer's desired buffer size or desired data mapped to the corresponding upstream BH RLC bearer1 , Sent to IAB node 3 DU.
  • the IAB node DU can report the cell-specific and UE-specific frame structure configuration to the CU.
  • the CU selects and configures the appropriate cell-specific and UE-specific frame structure for the IAB node DU according to the DU report and the current IAB network resource configuration.
  • the DU sends the cell-specific slot format to the CU through the F1 setup message or the gNB-DU configuration update message.
  • the DU needs context modification (context modification required) through the UE.
  • the message sends the IAB node MT or the UE specific slot format of the UE to the CU. Therefore, the IAB donor CU can send resource coordination information to the DU to configure the resources of the DU.
  • the CU sends the D-H, D-S, U-H, U-S, F-H, F-S, not available indication corresponding to each symbol resource of the DU to the DU through F1AP.
  • the IAB donor CU may carry the DU resource configuration in the F1 interface management message (such as the F1 setup response (response), gNB-CU configuration update) sent to the IAB node DU part through the F1AP.
  • the DU resource configuration is indicated per cell (per-cell). This configuration is used for the uplink and downlink communication and resource allocation of the child link of the IAB node DU part.
  • the F1AP information belongs to non-UE specific F1 signaling.
  • This resource indicator can be used by the DU to determine the allocation of uplink and downlink resources on the child BH link and child access link; IAB node DU part needs to know the slot format corresponding to the child IAB node DU part of the access, such as which time resources are not available (not available time resource), which are soft resources, so that the IAB node DU part can display and or implicitly control whether these soft resources (time resource type can be D, U or F) are for child IAB node The child link of DU part is available.
  • the IAB donor DU and IAB node DU can determine the uplink and downlink resources that can be used for the child link according to the semi-static frame structure and resource indication sent by the CU through the F1AP, so as to configure the corresponding resources.
  • the CU can configure the semi-static frame structure for the IAB node MT part through RRC signaling, including cell-specific and UE-specific frame structure configurations; or, the CU can send the IAB node MT through RRC signaling.
  • the part sends semi-static resource configuration (type 2 for DL, type 1 and 2 for UL). This configuration is used for uplink and downlink communication and resource allocation between IAB node MT part and parent link; or, CU can configure a semi-static frame structure for normal UE through RRC signaling, including cell-specific and UE-specific frames Structural configuration and semi-static resource configuration.
  • the DU may also use resource coordination information to configure resources for the MT or normal UE it serves.
  • the resource coordination information may also include L1 signalling information.
  • IAB donor DU and IAB node DU send SFI to the IAB node MT and normal UE they serve through L1 signalling for dynamic slot format configuration and DCI/UCI scheduling for dynamic resource allocation; another example is parent IAB donor/node DU through L1 signalling to The IAB node MT it serves sends SFI or other frame structure configuration information, which is used to adjust the frame structure and resource configuration of the child link of the co-located IAB node DU.
  • the IAB node DU uses the slot format indicator (Slot Format Indicator, SFI) variable symbol (Flexible symbol) on the child link to indicate F, it can use its co-located
  • SFI Slot Format Indicator
  • the IAB node MT sends a corresponding instruction to its parent IAB node.
  • the parent IAB node can use the corresponding resources for uplink or downlink transmission.
  • the IAB donor DU and IAB node DU can determine the uplink and downlink resources that can be used for the child link according to the dynamic frame structure indication and resource indication sent by their parent node through L1 signaling, so as to configure the corresponding resources.
  • the specific slot format configuration can be uniformly coordinated by the CU.
  • the DU can send some suggestion information, and the CU performs centralized configuration on this basis.
  • the F subframe configured by the IAB node DU if a certain hop link is configured as a downlink/downlink resource, the adjacent higher and lower hop parent IAB node DU and child IAB node MT can no longer be used The resource. Therefore, whether it is D/U or F, it needs to be interleaved with INA in hop order.
  • the parent IAB node DU judges that its resources are sufficient and there are more idle slots, it can indicate that the soft resources of the corresponding IAB node DU are available on these slots.
  • intra-DU intra-DU
  • intra-CU intra-CU
  • inter-CU inter-CU
  • the IAB node measures and reports the currently connected parent IAB node.
  • the report result is forwarded to the IAB donor CU by the parent node and the intermediate node. If the IAB donor CU determines that the handover conditions are met, it can select the target parent IAB DU for the IAB node MT.
  • IAB donor CU After the handover preparation, IAB donor CU sends the handover command to IAB node MT
  • the IAB node MT After S1304, the IAB node MT receives the handover command, it can identify the slot format according to the UE-specific frame structure configuration included in the handover command, and then execute the random access process to the target parent IAB DU.
  • the IAB donor CU sends a gNB CU configuration update message to its associated IAB node DU to update the DU part frame structure configuration.
  • the frame structure format configuration corresponding to the IAB node DU includes cell-specific and UE-specific configurations.
  • the UE-specific frame format configuration can be sent by the CU to the accessing UE or child IAB node MT through RRC signaling.
  • the traditional NR specification is determined by the DU and included in the system information block (System Information Block 1, SIB1), and the DU informs the CU.
  • SIB1 System Information Block 1
  • the IAB donor CU can send the frame structure configuration of the IAB node DU through the F1 setup response message or the gNB CU configuration update message.
  • the corresponding IAB node DU can assemble or update the SIB1 system information and broadcast it.
  • the RRC reconfiguration message therein already contains the frame structure format configuration corresponding to the IAB node DU. This can reduce the delay caused by the change of IAB node DU frame structure and reduce interference.
  • the SIB1 of the IAB node DU may change.
  • the UE specific frame format of all child IAB nodes and child UEs it serves may also change, corresponding to the child DU of its child DU.
  • the frame format of (grandchild DU) may also change. For this problem, it is recommended to choose the parent IAB node with the same hop order as much as possible. In addition, if the frame format changes, it will take effect immediately after the system information is updated.
  • the IAB node may consider selecting a new parent IAB node and attempt to rebuild.
  • the IAB node can obtain the update corresponding to the IAB node MT from the new parent IAB node
  • the UE specific frame structure configuration and/or the cell-specific resource configuration of the IAB node DU may be considered.
  • the donor CU is the IAB node and MT configures disjoint UE-specific frame formats on the primary cell (Primary Cell, PCell) and the secondary cell (Secondary Cell, SCell).
  • Primary Cell Primary Cell
  • Secondary Cell Secondary Cell
  • Embodiment 11 is a diagrammatic representation of Embodiment 11:
  • This embodiment also provides an IAB.
  • an IAB As shown in FIG. 14, it includes an IAB including a processor 1401, a memory 1402, and a communication bus 1403.
  • the communication bus 1403 is used to implement connection and communication between the processor 1401 and the memory 1402.
  • the processor 1401 is configured to execute one or more computer programs stored in the memory 1402 to implement at least one step in the information processing method in the IAB network in the foregoing embodiments.
  • This embodiment also provides a computer storage medium, which includes volatile information implemented in any method or technology for storing information (such as computer readable instructions, data structures, computer program modules, or other data). Or non-volatile, removable or non-removable media.
  • Computer 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 Disc (DVD) or other optical disk storage, magnetic cassettes, tapes, magnetic disk storage or other magnetic storage A device or any other medium that can be used to store desired information and can be accessed by a computer.
  • the computer storage medium in this embodiment can be used to store one or more computer programs, and the stored one or more computer programs can be executed by a processor to implement at least one of the information processing methods in the IAB network in the above embodiments One step.
  • This embodiment also provides a computer program product, including a computer readable device, and the computer readable device stores the computer program as shown above.
  • the computer-readable device may include the computer storage medium 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

Des modes de réalisation de la présente invention concernent un procédé de traitement d'informations dans un réseau IAB, un IAB et un support de stockage informatique. Le procédé de traitement d'informations dans un réseau IAB comprend les étapes suivantes: un premier noeud IAB obtient un premier paquet de données; et le premier noeud IAB envoie le premier paquet de données à un donneur IAB.
PCT/CN2020/075101 2019-02-15 2020-02-13 Procédé de traitement d'informations dans un réseau iab, iab et support de stockage informatique WO2020164546A1 (fr)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115150965A (zh) * 2021-03-31 2022-10-04 维沃移动通信有限公司 数据调度方法、装置及设备
WO2022245273A1 (fr) * 2021-05-19 2022-11-24 Telefonaktiebolaget Lm Ericsson (Publ) Gestion de configurations dans un donneur d'accès et de raccordement intégrés (iab) source pendant des adaptations de topologie temporaire
WO2023060546A1 (fr) * 2021-10-15 2023-04-20 Lenovo (Beijing) Limited Procédé et appareil pour une transmission de données sur un tunnel entre des unités distribuées donneuses

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110536351B (zh) * 2019-02-15 2024-06-04 中兴通讯股份有限公司 Iab网络中信息处理方法、iab及计算机存储介质
EP4075889A4 (fr) * 2019-12-10 2024-01-17 Lg Electronics Inc. Procédé de configuration de l'alignement de synchronisation d'un noeud iab, et noeud utilisant ledit procédé
US11844062B2 (en) * 2019-12-13 2023-12-12 Qualcomm Incorporated Local interference management in an integrated access backhaul network
WO2021123492A1 (fr) * 2019-12-18 2021-06-24 Nokia Solutions And Networks Oy Rejet commandé par unité centrale et assisté par unité distribuée dans un scénario de surcharge
CN113260086A (zh) * 2020-02-07 2021-08-13 维沃移动通信有限公司 自回传无线链路恢复失败处理方法及装置、通信设备
CN115053575A (zh) * 2020-02-13 2022-09-13 株式会社Ntt都科摩 无线通信节点
CN113259986B (zh) * 2020-02-13 2023-03-21 维沃移动通信有限公司 一种传输方法及网络设备
WO2021160293A1 (fr) * 2020-02-14 2021-08-19 Nokia Technologies Oy Nœud iab en aval, procédé permettant de faire fonctionner un nœud iab en aval, nœud iab en amont, procédé permettant de faire fonctionner un nœud iab en amont
WO2021159503A1 (fr) * 2020-02-14 2021-08-19 华为技术有限公司 Procédé de configuration de ressources et appareil
US11641682B2 (en) * 2020-03-13 2023-05-02 Qualcomm Incorporated Scheduling coordination in an integrated access and backhaul network
KR102590968B1 (ko) * 2020-04-07 2023-10-19 엘지전자 주식회사 무선통신 시스템에서 복수의 부모 노드들과 연결된 iab 노드의 동작 방법 및 상기 방법을 이용하는 장치
CN115428492A (zh) * 2020-04-09 2022-12-02 三星电子株式会社 回程与接入孔组合系统中向分布式单元分配ip地址的方法和设备
CN113518382B (zh) * 2020-04-10 2023-07-28 华为技术有限公司 一种流量控制方法和装置
EP4181571A4 (fr) * 2020-07-13 2023-08-16 Huawei Technologies Co., Ltd. Procédé de communication et dispositif de communication
CN114071718A (zh) * 2020-07-28 2022-02-18 维沃移动通信有限公司 资源的分配方法及装置、网络侧设备和可读存储介质
CN114071601A (zh) * 2020-08-04 2022-02-18 大唐移动通信设备有限公司 一种节点切换方法及装置
CN114390602B (zh) * 2020-10-16 2023-09-19 大唐移动通信设备有限公司 连接建立方法、装置、设备及存储介质
JP2023546424A (ja) * 2020-10-21 2023-11-02 富士通株式会社 Ｉａｂノードのマイグレーション方法及び装置
CN114520987A (zh) * 2020-11-20 2022-05-20 维沃移动通信有限公司 Iab节点的冲突处理方法、装置、设备及可读存储介质
WO2022205251A1 (fr) * 2021-03-31 2022-10-06 富士通株式会社 Procédé d'envoi et de réception d'informations, procédé d'envoi de données et appareil
CN115190558A (zh) * 2021-04-02 2022-10-14 华为技术有限公司 一种通信方法以及通信设备
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WO2022233016A1 (fr) * 2021-05-07 2022-11-10 Zte Corporation Schémas de configuration pour un nœud iab (integrated access and backhaul)
WO2023279376A1 (fr) * 2021-07-09 2023-01-12 Lenovo (Beijing) Limited Procédé et appareil de communication sans fil
WO2023010367A1 (fr) * 2021-08-04 2023-02-09 富士通株式会社 Procédé, appareil et système de transfert de dispositif terminal
WO2023010374A1 (fr) * 2021-08-05 2023-02-09 Zte Corporation Systèmes et procédés de transfert d'informations
WO2023150968A1 (fr) * 2022-02-10 2023-08-17 富士通株式会社 Procédé et appareil d'émission-réception de signal et système de communication
WO2024000316A1 (fr) * 2022-06-29 2024-01-04 北京小米移动软件有限公司 Procédé et appareil de transmission de données, dispositif de communication et support de stockage

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120020278A1 (en) * 2009-03-20 2012-01-26 Telefonaktiebolaget Lm Ericsson (Publ) Radio Bearer Identification for Self Backhauling and Relaying in LTE Advanced
CN108934030A (zh) * 2018-07-19 2018-12-04 武汉虹信通信技术有限责任公司 一种避免iab基站交叉干扰的方法
CN110536351A (zh) * 2019-02-15 2019-12-03 中兴通讯股份有限公司 Iab网络中信息处理方法、iab及计算机存储介质

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120020278A1 (en) * 2009-03-20 2012-01-26 Telefonaktiebolaget Lm Ericsson (Publ) Radio Bearer Identification for Self Backhauling and Relaying in LTE Advanced
CN108934030A (zh) * 2018-07-19 2018-12-04 武汉虹信通信技术有限责任公司 一种避免iab基站交叉干扰的方法
CN110536351A (zh) * 2019-02-15 2019-12-03 中兴通讯股份有限公司 Iab网络中信息处理方法、iab及计算机存储介质

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
3GPP: "1-5, 31, and 32", 3GPP TR 38.874 V16.0.0 (2018-12), 10 January 2019 (2019-01-10), DOI: 20200430183039X *
HUAWEI: "NR control plane latency analysis for UE initial access in IAB scenario", 3GPP TSG-RAN WG2 #101BIS R2-1806152, 6 April 2018 (2018-04-06), XP051416464, DOI: 20200430183150X *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115150965A (zh) * 2021-03-31 2022-10-04 维沃移动通信有限公司 数据调度方法、装置及设备
CN115150965B (zh) * 2021-03-31 2023-06-23 维沃移动通信有限公司 数据调度方法、装置及设备
WO2022245273A1 (fr) * 2021-05-19 2022-11-24 Telefonaktiebolaget Lm Ericsson (Publ) Gestion de configurations dans un donneur d'accès et de raccordement intégrés (iab) source pendant des adaptations de topologie temporaire
WO2023060546A1 (fr) * 2021-10-15 2023-04-20 Lenovo (Beijing) Limited Procédé et appareil pour une transmission de données sur un tunnel entre des unités distribuées donneuses

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