Wireless Link Failure Handling Method and Equipment

Abstract

Embodiments of the present disclosure provide a wireless link failure handling method and equipment. The method comprises: obtaining a first failure report—the first failure report indicates that a first node receives a notification of backhaul restoration failure from a parent node of the first node, or the first failure report indicates that a link failure has occurred in a first link, and the parent node of the first node is located in the first link—; and transmitting the first failure report to a donor node through a second link. In embodiments of the present disclosure, when an RLF occurs in a wireless link, a node having dual connectivity may be configured to report the failure report to a donor node, so that the donor node can perform scheduling and configuration on network resources according to the failure report.

Description

Technology Field

[0001] [Cross-reference to related applications]

[0002] This application claims priority to the patent with Chinese patent application number No. 201911084294.X, filed in China on November 7, 2019, the entire contents of which are incorporated into this claim by reference.

[0003] [Technology Field]

[0004] The present disclosure relates to the field of communication technology, and more specifically to a method and equipment for handling Radio Link Failure (RLF). Background Technology

[0005] Referring to Fig. 1, a wireless connection is applied between the Integrated Access and Backhaul node (IAB-node), but the link stability is not high. If an RLF occurs in the wireless link between IAB-node1 and IAB-node2, and IAB-node2 attempts to restore the connection but still fails, IAB-node2 sends a signal to IAB-node3 indicating that an RLF has occurred in the link, and simultaneously triggers IAB-node3 to rebuild the process.

[0006] However, due to an RLF occurring in the wireless link between IAB-node1 and IAB-node2, IAB-node3 cannot connect to the Integrated Access and Backhaul Donor (IAB-donor) node through IAB-node1, so the IAB-donor node becomes unable to perform effective scheduling and configuration of network resources. The problem to be solved

[0007] The objective of the embodiments of the present disclosure is to provide a wireless link failure handling method and equipment to solve the problem in which a donor node cannot perform effective scheduling and configuration of network resources when an RLF occurs in a wireless link. means of solving the problem

[0008] According to a first aspect of an embodiment of the present disclosure, a wireless link failure handling method used in a first node of a relay network architecture that performs data transmission through a relay node is provided, wherein the first node is dually connected to a donor node through a first link and a second link, and the method comprises

[0009] Step of obtaining a first failure report - the first failure report indicates that the first node receives a notification of backhaul restoration failure from the parent node of the first node, or the first failure report indicates that a link failure has occurred at the first link, and the parent node of the first node is located at the first link - ;

[0010] It includes the step of transmitting the first failure report to the donor node through the second link.

[0011] According to a second aspect of an embodiment of the present disclosure, a wireless link failure handling method used in a donor node of a relay network architecture that performs data transmission through a relay node is provided, wherein the method comprises:

[0012] The method includes the step of obtaining a first failure report transmitted from a first node via a second link, wherein the first failure report indicates that the first node receives a notification of backhaul restoration failure from the parent node of the first node, or the first failure report indicates that a link failure has occurred in the first link, and the parent node of the first node is located in the first link.

[0013] The first node is double-connected to the donor node through the first link and the second link.

[0014] According to a third aspect of an embodiment of the present disclosure, a wireless link failure handling method used in a third node of a relay network architecture that performs data transmission through a relay node is further provided, wherein the method comprises:

[0015] A step of generating a second failure report when an RLF occurs in the link between the third node and the parent node of the third node and restoration fails;

[0016] The step of transmitting the second failure report to the child node of the third node - the child node of the third node is connected to the donor node through a duplex connection - ; includes.

[0017] According to a fourth aspect of an embodiment of the present disclosure, a first node is further provided, wherein the first node is located in a relay network architecture that performs data transmission through a relay node, and the first node is dually connected to a donor node through a first link and a second link.

[0018] A first acquisition module configured to acquire a first failure report - the first failure report indicates that the first node receives a notification of backhaul restoration failure from the parent node of the first node, or the first failure report indicates a backhaul restoration failure of the parent node of the first node, or the first failure report indicates that a link failure has occurred at the first link, and the parent node of the first node is located at the first link - ;

[0019] It includes a first transmission module configured to transmit the first failure report to the donor node through the second link.

[0020] According to a fifth aspect of an embodiment of the present disclosure, in further providing a donor node, the donor node is located in a relay network architecture that performs data transmission through a relay node, and the donor node is,

[0021] The second acquisition module is configured to acquire a first failure report transmitted from a first node via a second link, wherein the first failure report indicates that the first node receives a notification of backhaul restoration failure from the parent node of the first node, or the first failure report indicates a backhaul restoration failure of the parent node of the first node, or the first failure report indicates that a link failure has occurred in the first link, and the parent node of the first node is located in the first link.

[0022] The first node is double-connected to the donor node through the first link and the second link.

[0023] According to a sixth aspect of an embodiment of the present disclosure, a third node is further provided, wherein the third node is located in a relay network architecture that performs data transmission through a relay node, and the third node is,

[0024] A generation module configured to generate a second failure report when an RLF occurs in the link between the third node and the parent node of the third node and the restoration fails;

[0025] A third transmission module configured to transmit the second failure report to a child node of the third node - the child node of the third node is connected to a donor node via a dual connection - ; includes.

[0026] According to a seventh aspect of the embodiment of the present disclosure, communication equipment is further provided, wherein the communication equipment comprises a processor, a memory, and a program stored in the memory and executable by the processor, and when the program is executed by the processor, the step of the wireless link failure handling method described in the first aspect, or the step of the wireless link failure handling method described in the second aspect, or the step of the wireless link failure handling method described in the third aspect is implemented.

[0027] According to the eighth aspect of the embodiment of the present disclosure, a computer-readable storage medium is further provided, wherein the computer-readable storage medium has a computer program stored therein, and when the computer program is executed by a processor, the step of the wireless link failure handling method described in the first aspect, or the step of the wireless link failure handling method described in the second aspect, or the step of the wireless link failure handling method described in the third aspect is implemented. Effects of the invention

[0028] In an embodiment of the present disclosure, when an RLF occurs in a wireless link, a node having dual connectivity may be configured to report a failure to a donor node, so that the donor node can perform scheduling and configuration on network resources based on the failure report. Brief explanation of the drawing

[0029] Those skilled in the art will more clearly understand the various other advantages and beneficial effects from the detailed description of the preferred embodiments set forth in the specification below. The attached drawings are for the purpose of illustrating preferred embodiments only and should not be construed as limiting the present disclosure. In all drawings, the same symbols are used to denote the same components. The drawings are briefly introduced as follows. Figure 1 is a schematic diagram of the IAB non-DC scenario. Figure 2 is a schematic diagram of the IAB network architecture. Figure 3 is a schematic diagram of the wireless link monitoring process. FIG. 4 is a flowchart 1 of a wireless link failure handling method according to an embodiment of the present disclosure. FIG. 5 is a flowchart 2 of a wireless link failure handling method according to an embodiment of the present disclosure. FIG. 6 is a flowchart 3 of a wireless link failure handling method according to an embodiment of the present disclosure. FIG. 7 is a schematic diagram of an IAB DC scenario according to an embodiment of the present disclosure. FIG. 8 is a schematic diagram of a first node according to an embodiment of the present disclosure. FIG. 9 is a schematic diagram of a donor node according to an embodiment of the present disclosure. FIG. 10 is a schematic diagram of a fourth node according to an embodiment of the present disclosure. FIG. 11 is a schematic diagram of a communication device according to an embodiment of the present disclosure. Specific details for implementing the invention

[0030] To better understand the embodiments of the present disclosure, the following technical details are introduced first.

[0031] 1. IAB Dual Connectivity (DC) Scenario:

[0032] Integrated Access and Backhaul (IAB) nodes have been introduced in New Radio (NR). IAB nodes perform network coverage expansion through wireless cascading. As shown in Fig. 2, the IAB-donor and the core network (CN) are connected via a wired link (e.g., optical cable), and other IAB-nodes are connected to adjacent IAB-nodes or IAB-donors via wireless backhaul. The IAB-donor includes a centralized unit (CU) and a distributed unit (DU); the former is responsible for non-real-time protocols and service processing, while the latter is responsible for physical layer protocols and real-time service processing. The IAB-node also includes a CU, as well as a mobile termination (MT) used as equipment to connect the IAB-donor and the IAB-node. When the MT of IAB-node (assumed to be Node A) is connected to the DU of the upstream node (assumed to be Node B), Node A is defined as the child node and Node B is defined as the parent node. As shown in FIG. 2, when the MT of IAB-node2 is connected to the DU of IAB-node1, IAB-node1 is the parent node and IAB-node2 is the child node.

[0033] In addition, a scenario similar to that of DC is also introduced in the IAB of NR. That is, when a child node is configured as a DC, the IAB-node can be simultaneously connected to two parent nodes, such as the relationship between IAB-node3 (child node) and IAB-node4 and IAB-node2 (parent node) in Figure 2.

[0034] 2. Radio Link Monitoring (RLM) and RLF of the Primary Cell (PCell):

[0035] Referring to FIG. 3, in the RLM function of Long Term Evolution (LTE), a terminal (e.g., User Equipment (UE)) implements monitoring of a radio link through the Signal to Interference plus Noise Ratio (SINR) of the Cell Reference Signal (CRS) corresponding to the Physical Downlink Control Channel (PDCCH) of the PCell. If the physical layer of the UE measures that the SINR of the CRS corresponding to the PCell's PDCCH is lower than a specific threshold, the corresponding radio link is considered "out-of-sync", and the physical layer notifies an upper layer (e.g., Radio Resource Control (RRC) layer) of a single out-of-sync instruction. If the RRC layer receives N310 consecutive out-of-sync instructions, the UE RRC layer starts a timer T310.

[0036] If the CRS corresponding to the PCell PDCCH is measured to be higher than a specific threshold, the corresponding wireless link is considered “in-sync”. In this case, the physical layer notifies the upper layer (e.g., the RRC layer) of a single in-sync instruction, and if the RRC layer receives N311 consecutive in-sync instructions, the UE stops the execution of Timer T310.

[0037] If Timer T310 times out, the UE determines that the UE's wireless link has failed and starts Timer T311; while T311 is running, the UE attempts to find a suitable cell to rebuild the RRC connection. Before successful rebuilding, the transmission and reception of user plane data between the UE and the network is interrupted.

[0038] If the UE's rebuild fails before T311 times out, the UE transitions from the RRC connected (RRC_CONNECTED) state to the RRC idle (RRC_IDLE) state.

[0039] Here, the durations of N310, N311, T310, and T311 are configured by the network.

[0040] In addition to determining the downlink signal, the UE also determines that the wireless link has failed when it reaches the UE's maximum RLC uplink transmission count and triggers the rebuild process.

[0041] The UE also determines that the wireless link has failed when the Random Access Channel (RACH) transmission reaches the maximum number of times and triggers a rebuild process.

[0042] Hereinafter, technical solutions in the embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. Of course, the embodiments described below are not all embodiments of the present disclosure, but merely some embodiments. All other embodiments obtained by a person skilled in the art without creative labor based on the embodiments of the present disclosure are all within the scope of protection of the present disclosure.

[0043] In the specification and claims of this application, the term “comprising” and any variation thereof is intended for non-exclusive inclusion. For example, a process, method, system, product, or device comprising a series of steps or units is not necessarily limited to the specified steps or units, but may include other steps or units that are not specified or are unique to such process, method, system, product, or device. Additionally, “and / or” is used in the specification and claims to denote at least one of the connected objects; for example, A and / or B represents three cases: A alone comprising, B alone comprising, or both A and B comprising.

[0044] It should be noted that in the embodiments of the present invention, words such as “exemplary” or “for example” are used as examples, illustrative, or descriptive. Any embodiment or design solution described as “exemplary” or “for example” in the embodiments of the present disclosure should not be interpreted as being more desirable or advantageous than other embodiments or design solutions. To be precise, words such as “exemplary” or “for example” are used to express related concepts in a specific way.

[0045] The technology described in this specification is not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but is applicable to various wireless communication systems such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems.

[0046] The terms “system” and “network” are often used interchangeably. CDMA systems can implement wireless technologies such as CDMA 2000 and Universal Terrestrial Radio Access (UTRA). UTRA includes Wideband Code Division Multiple Access (WCDMA) and other CDMA variants. TDMA systems can implement wireless technologies such as the Global System for Mobile Communication (GSM). OFDMA systems can implement wireless technologies such as Ultra Mobile Broadband (UMB), Evolution-UTRA (E-UTRA), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, and Flash-OFDM. UTRA and E-UTRA are part of the Universal Mobile Telecommunications System (UMTS). LTE and higher levels of LTE (e.g., LTE-A) are new UMTS versions using E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A, and GSM are described in documents from the organization named the “3rd Generation Partnership Project” (3GPP). CDMA 2000 and UMB are described in documents from the organization named the “3rd Generation Partnership Project 2” (3GPP2). The technology described in this specification may be applied to other systems and wireless technologies as well as the systems and wireless technologies mentioned above.

[0047] An embodiment of the present disclosure provides a wireless link failure handling method, wherein the executing entity of the method is a first node of a relay network architecture that performs data transmission through a relay node, and the first node is dually connected to a donor node through a first link and a second link, that is, the first node is configured as a DC, and the first node may be referred to as a DC node.

[0048] Referring to Figure 2, the first link can be understood as a link of IAB-node3-IAB node2-IAB node1-IAB donor, and the second link can be understood as a link of IAB-node3-IAB node4-IAB node5-IAB donor.

[0049] In some embodiments, the relay network architecture is an IAB network architecture or a Vehicle to Everything (V2X) architecture. For example, if the relay network architecture is an IAB network architecture, the first node is an IAB-node composed of a DC.

[0050] Referring to FIG. 4, the method specifically includes steps 401 and 402.

[0051] Step 401: Obtain the first failure report.

[0052] In an embodiment of the present disclosure, the first failure report is,

[0053] (1) The first node receives a backhaul recovery failure notification (BH RLF recovery failure from parents indication) from the first node's parent node, where the first node's parent node is located in the first link;

[0054] (2) Link failure occurred in the first link; one of the following may be indicated.

[0055] In some embodiments, the first failure report is,

[0056] (1) Notification of backhaul restoration failure from the parent node of the first node;

[0057] (2) Link quality information of the parent node of the first node;

[0058] (3) Link quality information of the first node;

[0059] (4) First measurement result - The first measurement result includes the result obtained by the parent node of the first node measuring the second node - ;

[0060] (5) A second measurement result - the second measurement result includes a result obtained by the first node measuring the second node - ; at least one of which is included,

[0061] Here, the second node includes at least some of the nodes that pass through when the first failure report is reported to the donor node.

[0062] Step 402: Send the first failure report to the donor node via the second link.

[0063] In an embodiment of the present disclosure, the first failure report is transmitted to the donor node via a hop-by-hop transmission method from the second link.

[0064] In an embodiment of the present disclosure, when an RLF occurs in a wireless link, a node having dual connectivity may be configured to report a failure to a donor node, so that the donor node can perform scheduling and configuration on network resources based on the failure report.

[0065] An embodiment of the present disclosure provides a method for handling wireless link failure, wherein the entity executing the method is a donor node of a relay network architecture that performs data transmission through a relay node. For example, the donor node is a donor node of an IAB network architecture or a vehicle-to-everything communication architecture.

[0066] Referring to FIG. 5, the method specifically includes step 501.

[0067] Step 501: Obtain the first failure report transmitted from the first node via the second link.

[0068] In an embodiment of the present disclosure, the first failure report is,

[0069] (1) The first node receives a notification of backhaul recovery failure (BH RLF recovery failure from parents indication) from the first node's parent node, where the first node's parent node is located in the first link;

[0070] (2) Link failure occurred in the first link; one of the following may be indicated.

[0071] In an embodiment of the present disclosure, the method further comprises the step of adjusting network parameters or a network topology structure according to the first failure report, wherein the donor node can reconfigure the nodes of the network by analyzing the first failure report.

[0072] In some embodiments, the first failure report is,

[0073] (1) Notification of backhaul restoration failure from the parent node of the first node;

[0074] (2) Link quality information of the parent node of the first node;

[0075] (3) Link quality information of the first node;

[0076] (4) First measurement result - The first measurement result includes the result obtained by the parent node of the first node measuring the second node - ;

[0077] (5) A second measurement result - the second measurement result includes a result obtained by the first node measuring the second node - ; at least one of which is included,

[0078] Here, the second node includes at least some of the nodes that pass through when the first failure report is reported to the donor node.

[0079] Referring to Figure 2, IAB-node3 corresponds to the first node, IAB-node2 to the third node, IAB-node1 to the parent node of the third node, and IAB-node4 and IAB-node5 to the second node.

[0080] In an embodiment of the present disclosure, since the donor node can obtain a failure report reported by a first node constituting the DC, the donor node can perform scheduling and configuration on network resources according to the failure report.

[0081] An embodiment of the present disclosure provides a wireless link failure handling method, wherein the entity executing the method is a third node of a relay network architecture that performs data transmission through a relay node, and the third node can be understood as the node where the RLF occurred.

[0082] In some embodiments, the relay network architecture is an IAB network architecture or a vehicle-to-everything communication architecture.

[0083] Referring to FIG. 6, the method specifically includes steps 601 and 602.

[0084] Step 601: If an RLF occurs in the link between the third node and the third node's parent node and the restoration fails, generate a second failure report.

[0085] In an embodiment of the present disclosure, if the third node satisfies the first condition, a second failure report is generated,

[0086] Here, the first condition is,

[0087] (1) Auxiliary cell group T310 timeout(t310-expirySCG);

[0088] (2) Auxiliary cell group synchronization reconfiguration failure (syncReconfigFailure-SCG);

[0089] (3) Auxiliary cell group reconfiguration failure (scg-ReconfigFailure);

[0090] (4) Signaling wireless bearer 3 integrity check failure (srb3-IntegrityFailure);

[0091] (5) Maximum uplink transmission count exceeded (rlc-MaxNumRetx);

[0092] (6) Random Access Problem; includes at least one of the following.

[0093] In an embodiment of the present disclosure, the second failure report corresponds to the initial failure report. For example, the second failure report includes link quality information of the third node, i.e., link quality information at the location where the RLF occurred.

[0094] Step 602: Send a second failure report to the child nodes of the third node.

[0095] In an embodiment of the present disclosure, the child node of the third node is connected to the donor node through a double connection.

[0096] In an embodiment of the present disclosure, if an RLF occurs in the link between the third node and the parent node of the third node and the recovery fails, the third node generates a second failure report and transmits it to the child node of the third node, and since the child node of the third node is connected to the donor node through a duplex connection, the donor node receives the failure report through the child node of the third node and can then perform scheduling and configuration on network resources according to the failure report.

[0097] Hereinafter, a method according to an embodiment of the present disclosure will be described in conjunction with specific examples.

[0098] Referring to Fig. 7, a scenario similar to that of DC is introduced in the IAB of NR. That is, when a child node is configured as a DC, the IAB-node can be simultaneously connected to two parent nodes, such as the relationship between IAB-node3 (child node) and IAB-node4 and IAB-node2 (parent node) in Fig. 7.

[0099] For example, if a radio link failure (RLF) occurs on the radio link between IAB-node1 and IAB-node2, and IAB-node2 attempts to restore the connection but fails, it can report the IAB-node2 link unavailable to IAB-node4.

[0100] The process of the processing method is as follows.

[0101] If IAB-node2 detects a failure in connection with IAB-node1 and fails to reconnect, IAB-node2 generates a failure report and sends the failure report to IAB-node3. After receiving the report, IAB-node3 reports the failure to another parent node, and as shown in Fig. 7, IAB-node3 reports the failure report to IAB-node4.

[0102] Here, the situation that triggers the failure report is,

[0103] (1) Auxiliary cell group T310 timeout(t310-expirySCG): radio link failure;

[0104] (2) Auxiliary cell group synchronization reconfiguration failure (syncReconfigFailure-SCG): SCG reconfiguration with synchronization failure (Failure of SCG reconfiguration with sync);

[0105] (3) Auxiliary cell group reconfiguration failure (scg-ReconfigFailure): SCG configuration failure for RRC message on SRB3;

[0106] (4) Signaling wireless bearer 3 integrity check failure (srb3-IntegrityFailure): SCG integrity check failure (SCGintegrity check failure);

[0107] (5) Exceeding the maximum uplink transmission timing difference (rlc-MaxNumRetx): Exceeding the maximum uplink transmission timing difference;

[0108] (6) Random Access Problem Occurred (randomAccessProblem);

[0109] (7) Includes one of the BH RLF recovery failures indicated by the parent node (BH RLF recovery failure from parents indication);

[0110] The failure report performs hop-by-hop data backhaul on Link L until it is sent to the IAB-donor.

[0111] Here, Link L is defined as the link to the IAB-donor node when the child IAB-node transmits data from the location of the RLF to the direction where the DC-node is located. For example, Link L can be understood as the link from IAB-node2 to IAB-node3 to IAB-node4 to IAB-node5 to IAB-donor.

[0112] The initial failure report may include link quality information at the location where the RLF occurred.

[0113] As an advancement, after receiving the report, IAB-node3 sends the report to IAB-node4, then to IAB-node5, and finally to IAB-donor.

[0114] As a further step, it is possible to carry the measurement results of IAB-node3 regarding IAB-node2 and other IAB-nodes—that is, the results obtained by measuring all IAB-nodes traversed during the process where the next child node of the child node at the location where the RLF occurred is reported to the IAB-donor—which is advantageous for the IAB-donor in reconstructing the IAB nodes.

[0115] As a further step, when IAB node2 instructs node3 to notify of a BH RLF restoration failure, it can carry IAB node2's measurement results regarding IAB node1 and other IAB nodes—that is, results obtained by measuring all IAB nodes traversed during the process of reporting from the child node at the location where the RLF occurred to the IAB-donor—which is advantageous for the IAB-donor to reconfigure the IAB nodes.

[0116] Referring to FIG. 8, an embodiment of the present disclosure provides a first node (800), wherein the first node (800) is located in a relay network architecture that performs data transmission through a relay node, and the first node (800) is dually connected to a donor node through a first link and a second link, and the first node (800) is,

[0117] A first acquisition module (801) configured to acquire a first failure report - the first failure report indicates that the first node receives a notification of backhaul restoration failure from the parent node of the first node, or the first failure report indicates that a link failure has occurred at the first link, and the parent node of the first node is located at the first link - ;

[0118] It includes a first transmission module (802) configured to transmit the first failure report to the donor node through the second link.

[0119] Optionally, the above first failure report,

[0120] Notification of backhaul restoration failure from the parent node of the first node above;

[0121] Link quality information of the parent node of the first node above;

[0122] Link quality information of the first node above;

[0123] First measurement result - The first measurement result includes the result obtained by the parent node of the first node measuring the second node - ;

[0124] A second measurement result - the second measurement result includes a result obtained by the first node measuring with respect to the second node -; and at least one of the following,

[0125] Here, the second node includes at least some of the nodes that pass through when the first failure report is reported to the donor node.

[0126] Optionally, the first transmission module is also configured to transmit the first failure report to the donor node in a hop-by-hop transmission manner on the second link.

[0127] Optionally, the relay network architecture is an IAB network architecture or a vehicle-to-everything communication architecture.

[0128] In an embodiment of the present disclosure, when an RLF occurs in a wireless link, a node having dual connectivity may be configured to report a failure to a donor node, so that the donor node can perform scheduling and configuration on network resources based on the failure report.

[0129] Referring to FIG. 9, an embodiment of the present disclosure provides a donor node (900), wherein the donor node (900) is located in a relay network architecture that performs data transmission through a relay node, and the donor node (900) is,

[0130] It includes a second acquisition module (901) configured to acquire a first failure report transmitted from a first node via a second link, wherein the first failure report indicates that the first node receives a notification of backhaul restoration failure from the parent node of the first node, or the first failure report indicates that a link failure has occurred in the first link, and the parent node of the first node is located in the first link.

[0131] The first node is double-connected to the donor node through the first link and the second link.

[0132] Optionally, the above first failure report,

[0133] Notification of backhaul restoration failure from the parent node of the first node above;

[0134] Link quality information of the parent node of the first node above;

[0135] Link quality information of the first node above;

[0136] First measurement result - The first measurement result includes the result obtained by the parent node of the first node measuring the second node - ;

[0137] A second measurement result - the second measurement result includes a result obtained by the first node measuring with respect to the second node -; and at least one of the following,

[0138] Here, the second node includes at least some of the nodes that pass through when the first failure report is reported to the donor node.

[0139] In an embodiment of the present disclosure, the donor node (900) is,

[0140] It further includes a coordination module configured to perform adjustments to network parameters or network topology in accordance with the first failure report above.

[0141] Optionally, the relay network architecture is an IAB network architecture or a vehicle-to-everything communication architecture.

[0142] In an embodiment of the present disclosure, since the donor node can obtain a failure report reported by a first node constituting the DC, the donor node can perform scheduling and configuration on network resources according to the failure report.

[0143] Referring to FIG. 10, an embodiment of the present disclosure provides a third node (1000), wherein the third node (1000) is located in a relay network architecture that performs data transmission through a relay node, and the third node (1000) is,

[0144] A generation module (1001) configured to generate a second failure report when an RLF occurs in the link between the third node and the parent node of the third node and the restoration fails;

[0145] A third transmission module (1002) configured to transmit the second failure report to a child node of the third node - the child node of the third node is connected to a donor node through a dual connection - ; includes.

[0146] Optionally, the step of generating a second failure report is,

[0147] If the third node satisfies the first condition, the step of generating the second failure report is included,

[0148] Here, the above first condition is,

[0149] Auxiliary cell group T310 timeout;

[0150] Failed to reconfigure auxiliary cell group synchronization;

[0151] Failed to reorganize auxiliary cell group;

[0152] Signaling wireless bearer 3 integrity check failed;

[0153] Exceeded maximum uplink transmission count;

[0154] Random access problem occurs; includes at least one of the following.

[0155] Optionally, the second failure report includes link quality information of the third node.

[0156] Optionally, the relay network architecture is an IAB network architecture or a vehicle-to-everything communication architecture.

[0157] In an embodiment of the present disclosure, if an RLF occurs in the link between the third node and the parent node of the third node and the recovery fails, the third node generates a second failure report and transmits it to the child node of the third node, and since the child node of the third node is connected to the donor node through a duplex connection, the donor node receives the failure report through the child node of the third node and can then perform scheduling and configuration on network resources according to the failure report.

[0158] Referring to FIG. 11, FIG. 11 is a configuration diagram of communication equipment applied to an embodiment of the present disclosure. As shown in FIG. 11, the communication equipment (1100) includes a processor (1101), a transceiver (1102), a memory (1103), and a bus interface, wherein the processor (1101) can manage the bus architecture and general processing. Data used when the processor (1101) performs operations may be stored in the memory (1103).

[0159] In an embodiment of the present disclosure, the communication equipment (1100) further comprises a program that is stored in memory (603) and executable on a processor (1101), and when the program is executed by the processor (1101), the steps of the method illustrated in FIG. 4, FIG. 5, or FIG. 6 are implemented.

[0160] In FIG. 11, the bus architecture may include any number of interconnected buses and bridges, specifically, one or more processors represented by a processor (1101) and memory represented by a memory (1103) are connected to each other through various circuits. The bus architecture may also connect various other circuits such as peripheral devices, voltage stabilizers, power management circuits, etc. Since this is known in the art, a detailed description is omitted here. The bus interface provides an interface. The transceiver (1102) may be a plurality of components including a transmitter and a receiver, and provides a unit for communicating with various other equipment in a transmission medium.

[0161] The communication equipment according to the embodiment of the present disclosure can implement the method embodiment shown in FIG. 4, FIG. 5, or FIG. 6, and since the implementation principle and technical effect are similar, they are not described repeatedly in this embodiment.

[0162] The steps of the method or algorithm described in the specification of this disclosure may be implemented in hardware or by executing software instructions on a processor. Software instructions may be composed of corresponding software modules, and the software modules may be stored in Random Access Memory (RAM), flash memory, Read-Only Memory (ROM), Erasable PROM (EPROM), Electrically Electronic EPROM (EEPROM), registers, hard disks, removable hard disks, CD-ROMs, or any other form of storage medium known in the art. By connecting an exemplary storage medium to a processor, information can be read from the storage medium and written to the storage medium through the processor. Of course, the storage medium may be a component of the processor. The processor and the storage medium may be located in an Application Specific Integrated Circuit (ASIC). Additionally, the ASIC may be located in a core network interface device. Of course, the processor and the storage medium may exist as individual components in the core network interface device.

[0163] Those skilled in the art will understand that in one or more of the examples above, the functions described in this disclosure may be implemented by hardware, software, firmware, or any combination thereof. When implemented by software, these functions may be stored on a computer-readable medium or transmitted as one or more instructions or code within a computer-readable medium. A computer-readable medium includes a computer storage medium and a communication medium, wherein the communication medium includes any medium capable of easily transmitting a computer program from one place to another. A storage medium may be any available medium accessible by a general-purpose or dedicated computer.

[0164] Although the purpose, technical solution, and beneficial effects of the present disclosure have been described in detail through specific embodiments as described above, the above description is merely specific embodiments of the present disclosure and is not intended to limit the scope of protection of the present disclosure, and all modifications, equivalent substitutions, improvements, etc., made based on the technical solution of the present disclosure shall be included within the scope of protection of the present disclosure.

[0165] Those skilled in the art will understand that embodiments of the present disclosure may provide a method, a system, or a computer program product. Accordingly, embodiments of the present disclosure may be implemented in the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Additionally, embodiments of the present disclosure may be used in the form of one or more computer program products implemented on a computer-available storage medium (including, but not limited to, disk storage devices, CD-ROMs, optical storage devices, etc.) containing computer-available program code.

[0166] Embodiments of the present disclosure are described with reference to flowcharts and / or block diagrams of methods, equipment (systems), and computer program products according to embodiments of the present disclosure. Each process and / or block of the flowchart and / or block diagram, or combinations of processes and / or blocks of the flowchart and / or block diagram, may be implemented by computer program instructions. Such computer program instructions are provided to a processor of a general-purpose computer, a dedicated computer, an embedded processor, or other programmable data processing device to create a machine, and when such instructions are executed by the computer or other programmable data processing device, a device is created that implements a specified function in one or more processes of the flowchart and / or one or more blocks of the block diagram.

[0167] These computer program instructions are also stored in computer-readable memory that can be booted to operate a computer or other programmable data processing device in a specific way, thereby producing a manufactured product comprising an instruction unit in which the instructions stored in computer-readable memory can implement a specified function in one or more processes of a flowchart and / or one or more blocks of a block diagram.

[0168] The above computer program instructions are also loaded into a computer or other programmable data processing device to create a process implemented by the computer by causing a series of operation procedures to be performed on the computer or other programmable device, and accordingly, steps of a specified function in one or more processes of a flowchart and / or one or more blocks of a block diagram may be implemented by instructions executed on the computer or other programmable data processing device.

[0169] It is understood that the embodiments described in the embodiments of the present disclosure may be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof. In the case of a hardware implementation, a module, unit, submodule, subunit, etc. may be implemented by one or more Application Specific Integrated Circuits (ASIC), Digital Signal Processing (DSP), Digital Signal Processing Device (DSPD), Programmable Logic Device (PLD), Field-Programmable Gate Array (FPGA), general-purpose processor, controller, microcontroller, microprocessor, other electronic unit performing the functions of the present disclosure, or a combination thereof.

[0170] A person skilled in the art may make various changes and modifications to the embodiments of the present disclosure without departing from the spirit and scope of the present disclosure. As such, if such modifications and variations of the embodiments of the present disclosure fall within the scope of the claims and equivalents of the present disclosure, the present disclosure is also intended to include such modifications and variations.

Claims

Claim 1 A wireless link failure handling method performed by a first node of a relay network architecture that performs data transmission through a relay node, wherein the first node is dually connected to a donor node through a first link and a second link, and comprises the steps of: obtaining a first failure report—the first failure report indicates that the first node receives a notification of backhaul restoration failure from the parent node of the first node, or the first failure report indicates that a link failure has occurred in the first link, and the parent node of the first node is located in the first link—; and transmitting the first failure report to the donor node through the second link; wherein the first failure report comprises a first measurement result—the first measurement result includes a result obtained by the parent node of the first node measuring the second node—; and a second measurement result—the second measurement result includes a result obtained by the first node measuring the second node—; A wireless link failure handling method characterized by including at least one of the following, wherein the second node includes at least some nodes that pass through when the first failure report is reported to the donor node, the first failure report further includes link quality information of the first node, and the step of transmitting the first failure report to the donor node through the second link includes the step of transmitting the first failure report to the donor node in a hop-by-hop transmission manner on the second link. Claim 2 A wireless link failure handling method according to claim 1, wherein the first failure report further comprises at least one of: a notification of backhaul restoration failure from the parent node of the first node; and link quality information of the parent node of the first node. Claim 3 A wireless link failure handling method performed by a donor node of a relay network architecture that performs data transmission through a relay node, comprising the step of obtaining a first failure report transmitted from a first node through a second link, wherein the first failure report indicates that the first node receives a notification of backhaul restoration failure from the parent node of the first node, or the first failure report indicates a backhaul restoration failure of the parent node of the first node, or the first failure report indicates that a link failure has occurred in a first link, the parent node of the first node is located in the first link, and the first node is dually connected to the donor node through the first link and the second link, and the first failure report comprises: a first measurement result - the first measurement result includes a result obtained by the parent node of the first node measuring with respect to the second node -; and a second measurement result - the second measurement result includes a result obtained by the first node measuring with respect to the second node -; A wireless link failure handling method characterized by including at least one of the following, wherein the second node includes at least some nodes that pass through when the first failure report is reported to the donor node, the first failure report further includes link quality information of the first node, and the first failure report is transmitted by the first node to the donor node in a hop-by-hop transmission manner on the second link. Claim 4 A wireless link failure handling method according to paragraph 3, further comprising the step of performing adjustments to network parameters or network topology in accordance with the first failure report. Claim 5 A wireless link failure handling method according to claim 3, wherein the first failure report further comprises at least one of: a notification of backhaul restoration failure from the parent node of the first node; and link quality information of the parent node of the first node. Claim 6 A first node comprises: a first acquisition module configured to acquire a first failure report, wherein the first node is located in a relay network architecture that performs data transmission through a relay node, the first node is dually connected to a donor node through a first link and a second link, and the first acquisition module configured to acquire a first failure report—wherein the first failure report indicates that the first node receives a notification of backhaul restoration failure from the parent node of the first node, or the first failure report indicates a backhaul restoration failure of the parent node of the first node, or the first failure report indicates that a link failure has occurred in the first link, and the parent node of the first node is located in the first link—; and a first transmission module configured to transmit the first failure report to the donor node through the second link; wherein the first failure report comprises a first measurement result—wherein the first measurement result includes a result obtained by the parent node of the first node measuring the second node—; A first node characterized by comprising at least one of the following: a second measurement result - the second measurement result includes a result obtained by the first node measuring the second node -, wherein the second node includes at least some nodes that pass through when the first failure report is reported to the donor node, the first failure report further includes link quality information of the first node, and the first transmission module is also configured to transmit the first failure report to the donor node in a hop-by-hop transmission manner on the second link. Claim 7 A first node according to claim 6, wherein the first failure report further comprises at least one of: a notification of backhaul restoration failure from the parent node of the first node; and link quality information of the parent node of the first node. Claim 8 In a donor node, the donor node is located in a relay network architecture that performs data transmission through a relay node and includes a second acquisition module configured to acquire a first failure report transmitted from a first node via a second link, wherein the first failure report indicates that the first node receives a notification of backhaul restoration failure from the parent node of the first node, or the first failure report indicates a backhaul restoration failure of the parent node of the first node, or the first failure report indicates that a link failure has occurred at a first link, the parent node of the first node is located at the first link, and the first node is dually connected to the donor node via the first link and the second link, and the first failure report includes a first measurement result - the first measurement result includes a result obtained by the parent node of the first node measuring against the second node -; and a second measurement result - the second measurement result includes a result obtained by the first node measuring against the second node -; A donor node comprising at least one of the following, wherein the second node comprises at least some nodes that pass through when the first failure report is reported to the donor node, the first failure report further comprises link quality information of the first node, and the first failure report is characterized in that it is transmitted by the first node to the donor node in a hop-by-hop transmission manner on the second link. Claim 9 A computer-readable storage medium, wherein a computer program is stored therein, and the method for handling a wireless link failure according to claim 1 or 2 is implemented when the computer program is executed by a processor of a first node, or the method for handling a wireless link failure according to any one of claims 3 to 5 is implemented when the computer program is executed by a processor of a donor node. Claim 10 delete Claim 11 delete Claim 12 delete Claim 13 delete Claim 14 delete Claim 15 delete Claim 16 delete Claim 17 delete Claim 18 delete Claim 19 delete Claim 20 delete Claim 21 delete Claim 22 delete Claim 23 delete Claim 24 delete Claim 25 delete Claim 26 delete

Images