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WO2025020011A1 - Procédé de communication, équipement utilisateur, système de communication et support de stockage - Google Patents

Procédé de communication, équipement utilisateur, système de communication et support de stockage Download PDF

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Publication number
WO2025020011A1
WO2025020011A1 PCT/CN2023/108754 CN2023108754W WO2025020011A1 WO 2025020011 A1 WO2025020011 A1 WO 2025020011A1 CN 2023108754 W CN2023108754 W CN 2023108754W WO 2025020011 A1 WO2025020011 A1 WO 2025020011A1
Authority
WO
WIPO (PCT)
Prior art keywords
terminal
command
network device
instruction
path switching
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2023/108754
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English (en)
Chinese (zh)
Inventor
杨星
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Xiaomi Mobile Software Co Ltd
Original Assignee
Beijing Xiaomi Mobile Software Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beijing Xiaomi Mobile Software Co Ltd filed Critical Beijing Xiaomi Mobile Software Co Ltd
Priority to PCT/CN2023/108754 priority Critical patent/WO2025020011A1/fr
Priority to CN202380010236.0A priority patent/CN117280757A/zh
Publication of WO2025020011A1 publication Critical patent/WO2025020011A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
    • H04W40/22—Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H04W72/231—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal the control data signalling from the layers above the physical layer, e.g. RRC or MAC-CE signalling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/18—Management of setup rejection or failure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/19—Connection re-establishment

Definitions

  • the present disclosure relates to the field of communication technology, and in particular to a communication method, a terminal, a communication system, and a storage medium.
  • the network will configure the terminal (User Equipment, UE) to perform measurements.
  • the network sends a handover request to the target cell based on the measurement results reported by the UE.
  • the network sends a handover command to the UE.
  • the UE initiates a random access process to access the target cell.
  • the embodiments of the present disclosure provide a communication method, a terminal, a communication system, and a storage medium to control the data transmission state of a wireless bearer of a first terminal, thereby ensuring the security of data transmitted through the wireless bearer.
  • a communication method which is performed by a first terminal.
  • the method includes:
  • the data transmission of the wireless bearer is suspended.
  • a communication method is provided, which is executed by a second terminal.
  • the method includes:
  • a first command sent by a first network device is forwarded to a first terminal, wherein the first command is sent by the first network device before instructing the second terminal to start path switching, and the first command is used by the first terminal to instruct the first terminal to suspend data transmission of a wireless bearer according to the effect of the first command.
  • a communication method is proposed, which is performed by a network device.
  • the method includes:
  • a first command is sent to the first terminal, where the first command is used for the first terminal to instruct the first terminal to suspend data transmission of the wireless bearer according to the effect of the first command.
  • a first terminal wherein the first terminal includes:
  • a transceiver module configured to receive a first command, where the first command is sent by the first network device to the first terminal before instructing the second terminal to start path switching;
  • the processing module is used to suspend the data transmission of the radio bearer according to the effect of the first command to instruct the first terminal to suspend the data transmission of the radio bearer.
  • a second terminal wherein the second terminal includes:
  • the transceiver module is used to forward a first command sent by a first network device to a first terminal, wherein the first command is The device sends the first command before instructing the second terminal to start path switching, and the first command is used by the first terminal to instruct the first terminal to suspend data transmission of the wireless bearer according to the effect of the first command, thereby suspending data transmission of the wireless bearer.
  • a network device wherein the network device includes:
  • the transceiver module is used to send a first command to the first terminal before instructing the second terminal to start path switching, wherein the first command is used for the first terminal to instruct the first terminal to suspend data transmission of the wireless bearer according to the effect of the first command, thereby suspending data transmission of the wireless bearer.
  • a terminal including:
  • One or more processors wherein the terminal is used to execute the communication method described in the first aspect or the second aspect.
  • a network device including:
  • One or more processors wherein the network device is used to execute the communication method described in the third aspect.
  • a communication system comprising a first terminal, a second terminal, and a network device, wherein the first terminal is configured to implement the communication method described in the first aspect, the second terminal is configured to implement the communication method described in the second aspect, and the network device is configured to implement the communication method described in the third aspect.
  • a storage medium which stores instructions.
  • the communication device executes the communication method described in the first aspect, the second aspect, or the third aspect.
  • the purpose of controlling the data transmission state of the radio bearer of the first terminal is achieved, and the security of the data transmitted through the radio bearer is guaranteed.
  • FIG. 1 a is a schematic diagram showing the architecture of a communication system according to an embodiment of the present disclosure.
  • FIG1b is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure.
  • FIG. 2 is an interactive schematic diagram of a communication method according to an embodiment of the present disclosure.
  • FIG. 3 a is a flow chart of a communication method according to an embodiment of the present disclosure.
  • FIG3 b is a flow chart of a communication method according to an embodiment of the present disclosure.
  • FIG3c is a flow chart of a communication method according to an embodiment of the present disclosure.
  • FIG3d is a flow chart of a communication method according to an embodiment of the present disclosure.
  • FIG4 a is a flow chart of a communication method according to an embodiment of the present disclosure.
  • FIG4b is a flow chart of a communication method according to an embodiment of the present disclosure.
  • FIG5a is a schematic diagram of a communication method according to an embodiment of the present disclosure.
  • FIG5b is a schematic diagram of a communication method according to an embodiment of the present disclosure.
  • FIG5c is a schematic diagram of a communication method according to an embodiment of the present disclosure.
  • FIG5d is a schematic diagram of a communication method according to an embodiment of the present disclosure.
  • FIG. 6 a is a schematic diagram of the structure of a terminal proposed in an embodiment of the present disclosure.
  • FIG. 6 b is a schematic diagram of the structure of a terminal proposed in an embodiment of the present disclosure.
  • FIG. 6c is a schematic diagram of the structure of a network device proposed in an embodiment of the present disclosure.
  • FIG. 7 a is a schematic diagram of the structure of a communication device proposed in an embodiment of the present disclosure.
  • FIG. 7 b is a schematic diagram of the structure of a chip proposed in an embodiment of the present disclosure.
  • Embodiments of the present disclosure provide a communication method, a terminal, a communication system, and a storage medium.
  • an embodiment of the present disclosure provides a communication method, which is performed by a first terminal, and the method includes:
  • the data transmission of the wireless bearer is suspended.
  • the first terminal is configured to suspend the data transmission of the radio bearer of the first terminal according to the first command for instructing to suspend the data transmission of the radio bearer before the first network device instructs the second terminal to start the path switching.
  • the purpose of controlling the data transmission state of the radio bearer of the first terminal is achieved, thereby ensuring the security of the data transmitted through the radio bearer.
  • the wireless bearer is a wireless bearer for transmitting data through an indirect path
  • the indirect path represents a path by which the first terminal is connected to the first network device through the second terminal.
  • the state of the wireless bearer for data transmission on the first terminal through the second terminal can be controlled to avoid the loss of data sent to the network by the first terminal due to path switching by the second terminal, or to avoid the problem that the data sent to the network by the first terminal cannot be resolved by the network due to path switching by the second terminal.
  • the first command is a first path switching command, or the first command is a Packet Data Convergence Protocol PDCP control signaling.
  • the first command by configuring the first command to be a first path switching command or a PDCP control signaling, signaling overhead can be saved.
  • the method further includes:
  • the first command includes a first instruction, and it is determined that the function of the first command is to instruct the first terminal to suspend data transmission of the radio bearer, wherein the first instruction represents that the first network device instructs the first terminal to suspend data transmission of the radio bearer.
  • the first command can be made to have the function of instructing the first terminal to suspend data transmission of the wireless bearer, thereby achieving the purpose of controlling the data transmission status of the wireless bearer of the first terminal.
  • the first command including the first instruction is sent by the first network device when determining that the serving cell in the new path is changed after the path switching.
  • the first network device since the new service cell may not be able to parse the data generated using the configuration of the original service cell, the first network device will send a first command instructing the first terminal to suspend data transmission on the wireless bearer to the first terminal when determining that the service cell in the new path has changed after the second terminal performs a path switch. This can avoid sending the data generated using the configuration of the original service cell to the new service cell, and further avoid the problem of data loss caused by the new service cell being unable to parse the data generated using the configuration of the original service cell.
  • the method further includes:
  • the first command includes a second instruction to maintain data transmission of the radio bearer, wherein the second instruction represents that the first network device instructs the first terminal to maintain data transmission of the radio bearer.
  • the first terminal by configuring the first command to carry the second instruction, the first terminal can maintain the data transmission of the radio bearer, avoid interruption of the data transmission of the radio bearer, and ensure the stability of the data transmission.
  • the first command including the second instruction is sent by the first network device when it is determined that the serving cell in the new path has not changed after the path switching.
  • the method further includes:
  • a third instruction is sent to the first network device, wherein the third instruction indicates the number of the data packet that the first terminal has successfully sent to the second terminal, and the number is used by the first network device to instruct the second terminal to start path switching after determining that each of the data packets corresponding to each of the numbers sent by the second terminal has been received.
  • sending the third instruction to the first network device helps the first network device to determine the timing to instruct the second terminal to start path switching, thereby improving the reliability of the first network device.
  • the method further includes:
  • a fourth instruction sent by the second terminal is received, and data transmission of the radio bearer is resumed, wherein the fourth instruction indicates that the path switching of the second terminal is successful.
  • the first terminal resumes the data transmission of the wireless bearer in response to receiving the fourth instruction sent by the second terminal. This can reduce the duration of the first terminal stopping the data transmission of the wireless bearer, avoid the problem of data backlog caused by data transmission interruption, and the problem of untimely data transmission, such as the problem of delayed data transmission in the real-time data transmission scenario.
  • the fourth instruction is carried in a NotificationMessageSidelink sidelink notification message.
  • carrying the fourth instruction in the NotificationMessageSidelink sidelink notification message can reduce signaling overhead and is also beneficial for the first terminal to receive the fourth instruction in time, thereby avoiding loss or invalidation of the fourth instruction.
  • the method further includes:
  • a fifth instruction sent by a second network device is received to resume data transmission of the radio bearer, wherein the second network device represents a network device to which the second terminal is connected after the path switching is successful.
  • the first terminal resumes data transmission of the radio bearer in response to receiving the fifth instruction sent by the second network device, which can reduce the duration of stopping data transmission of the radio bearer by the first terminal and improve the data transmission performance of the first terminal.
  • the fifth instruction is carried in the RRC Reconfiguration RRC reconfiguration message.
  • carrying the fifth instruction in the RRC Reconfiguration message can save signaling overhead and is also beneficial for the first terminal to receive the fifth instruction in time, thereby restoring data transmission of the wireless bearer in time.
  • the first path switching command is a group path switching command.
  • the data transmission state of the wireless bearer of the first terminal can be controlled before the first terminal and the second terminal perform path changes together, which can avoid the loss of data sent by the first terminal to the network through the second terminal due to the group path switching.
  • the first path switching command is reconfigurationwithsync synchronous reconfiguration signaling or pathswitch path switching signaling.
  • the first path switching command can be configured as reconfigurationwithsync synchronous reconfiguration signaling or pathswitch path switching signaling, it is convenient to flexibly configure the first path switching command.
  • an embodiment of the present disclosure provides a communication method, which is performed by a second terminal, and the method includes:
  • a first command sent by a first network device is forwarded to a first terminal, wherein the first command is sent by the first network device before instructing the second terminal to start path switching, and the first command is used by the first terminal to instruct the first terminal to suspend data transmission of a wireless bearer according to the effect of the first command.
  • the method further includes:
  • the first terminal can be notified in time to resume the data transmission of the radio bearer.
  • the fourth instruction is carried in a NotificationMessageSidelink sidelink notification message.
  • the target node is a cell
  • the determining that the path switching is successful includes: determining that the target node is successfully accessed based on the successful completion of the random access process, and determining that the path switching is successful.
  • a judgment method for determining whether the second terminal successfully accesses the target node is provided.
  • the target node is a relay terminal
  • Determining that the path switching is successful includes: determining that the target node is successfully accessed based on successfully sending an RRC ReconfigurationCompleteRRC reconfiguration completion message, and determining that the path switching is successful.
  • an embodiment of the present disclosure provides a communication method, which is performed by a network device, and the method includes:
  • a first command is sent to the first terminal, where the first command is used for the first terminal to instruct the first terminal to suspend data transmission of the wireless bearer according to the effect of the first command, thereby suspending data transmission of the wireless bearer.
  • the method further includes:
  • the method further includes:
  • a fifth instruction is sent to the first terminal, where the fifth instruction is used to instruct the first terminal to resume data transmission of the radio bearer.
  • an embodiment of the present disclosure proposes a first terminal, which includes at least one of a transceiver module and a processing module, and the first terminal is used to execute the implementation method of the first aspect or the optional implementation method of the first aspect.
  • an embodiment of the present disclosure proposes a second terminal, which includes a transceiver module, and the second terminal is used to execute the implementation method of the second aspect or the optional implementation method of the second aspect.
  • an embodiment of the present disclosure proposes a network device, which includes a transceiver module, and the network device is used to execute the implementation method of the third aspect or the optional implementation method of the third aspect.
  • an embodiment of the present disclosure proposes a terminal, comprising: one or more processors; wherein the terminal is used to execute the implementation method of the first aspect or the optional implementation method of the first aspect, or the terminal is used to execute the implementation method of the second aspect or the optional implementation method of the second aspect.
  • an embodiment of the present disclosure proposes a network device, comprising: one or more processors; wherein the network device is used to execute the implementation method of the third aspect or the optional implementation method of the third aspect.
  • an embodiment of the present disclosure proposes a communication system, comprising a first terminal, a second terminal, and a network device, wherein the first terminal is configured to execute the communication method described in the implementation manner of the first aspect or the optional implementation manner of the first aspect, the second terminal is configured to execute the communication method described in the implementation manner of the second aspect or the optional implementation manner of the second aspect, and the network device is configured to execute the communication method described in the implementation manner of the third aspect or the optional implementation manner of the third aspect.
  • an embodiment of the present disclosure proposes a storage medium, which stores instructions.
  • the communication device executes the communication method described in the implementation of the first aspect or the optional implementation of the first aspect, or the communication device executes the communication method described in the implementation of the second aspect or the optional implementation of the second aspect, or the communication device executes the communication method described in the implementation of the third aspect or the optional implementation of the third aspect.
  • an embodiment of the present disclosure proposes a program product.
  • the communication device executes the communication method described in the implementation of the first aspect or the optional implementation of the first aspect, or the communication device executes the communication method described in the implementation of the second aspect and the optional implementation of the second aspect, or the communication device executes the communication method described in the implementation of the third aspect and the optional implementation of the third aspect.
  • an embodiment of the present disclosure proposes a computer program, which, when running on a computer, enables the computer to execute the communication method described in the implementation of the first aspect, the implementation of the second aspect, the implementation of the third aspect, the optional implementation of the first aspect, the optional implementation of the second aspect, or the optional implementation of the third aspect.
  • an embodiment of the present disclosure provides a chip or a chip system.
  • the chip or chip system includes a processing circuit, and the processing circuit is configured to execute the communication method described in the implementation of the first aspect, the implementation of the second aspect, the implementation of the third aspect, the optional implementation of the first aspect, the optional implementation of the second aspect, or the optional implementation of the third aspect.
  • the first terminal, the second terminal, the terminal, the communication system, the storage medium, the program product, the computer program, the chip or the chip system are all used to execute the communication method proposed in the embodiment of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding method, which will not be repeated here.
  • the embodiments of the present disclosure provide a communication method, a terminal, a communication system, and a storage medium.
  • the terms such as communication method, information processing method, and data transmission method can be replaced with each other, the terms such as communication device, information processing device, and data transmission device can be replaced with each other, and the terms such as communication system, information processing system, and data transmission system can be replaced with each other.
  • each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined.
  • a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged.
  • the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined, for example, some or all of the steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.
  • plurality refers to two or more.
  • the terms "at least one of”, “one or more”, “a plurality of”, “multiple”, etc. can be used interchangeably.
  • "at least one of A and B", “A and/or B", “A in one case, B in another case”, “in response to one case A, in response to another case B”, etc. may include the following technical solutions according to the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); in some embodiments, A and B (both A and B are executed). When there are more branches such as A, B, C, etc., the above is also similar.
  • the recording method of "A or B” may include the following technical solutions according to the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed).
  • A A is executed independently of B
  • B B is executed independently of A
  • execution is selected from A and B (A and B are selectively executed).
  • prefixes such as “first” and “second” in the embodiments of the present disclosure are only used to distinguish different description objects, and do not constitute restrictions on the position, order, priority, quantity or content of the description objects.
  • the statement of the description object refers to the description in the context of the claims or embodiments, and should not constitute unnecessary restrictions due to the use of prefixes.
  • the description object is a "field”
  • the ordinal number before the "field” in the "first field” and the "second field” does not limit the position or order between the "fields”
  • the "first” and “second” do not limit whether the "fields” they modify are in the same message, nor do they limit the order of the "first field” and the "second field”.
  • the description object is a "level”
  • the ordinal number before the "level” in the “first level” and the “second level” does not limit the priority between the "levels”.
  • the number of description objects is not limited by the ordinal number, and can be one or more. Taking the "first device” as an example, the number of "devices” can be one or more.
  • the objects modified by different prefixes may be the same or different. For example, if the description object is "device”, then the “first device” and the “second device” may be the same device or different devices, and their types may be the same or different. For another example, if the description object is "information”, then the "first information” and the “second information” may be the same information or different information, and their contents may be the same or different.
  • “including A”, “comprising A”, “used to indicate A”, and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.
  • terms such as “greater than”, “greater than or equal to”, “not less than”, “more than”, “more than or equal to”, “not less than”, “higher than”, “higher than or equal to”, “not lower than”, and “above” can be replaced with each other, and terms such as “less than”, “less than or equal to”, “not greater than”, “less than”, “less than or equal to”, “no more than”, “lower than”, “lower than or equal to”, “not higher than”, and “below” can be replaced with each other.
  • devices and equipment can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. In some cases, they can also be understood as “equipment”, “device”, “circuit”, “network”, etc. “element”, “node”, “function”, “unit”, “component (section)”, “system”, “network”, “chip”, “chip system”, “entity”, “subject”, etc.
  • network can be interpreted as devices included in the network, such as access network equipment, core network equipment, etc.
  • access network device may also be referred to as “radio access network device (RAN device)", “base station (BS)”, “radio base station (radio base station)”, “fixed station” and in some embodiments may also be understood as “node”, “access point (access point)”, “transmission point (TP)”, “reception point (RP)”, “transmission and/or reception point (transmission/reception point, TRP)", “panel”, “antenna panel”, “antenna array”, “cell”, “macro cell”, “small cell”, “femto cell”, “pico cell”, “sector”, “cell group”, “serving cell”, “carrier”, “component carrier”, “bandwidth part (bandwidth part, BWP)", etc.
  • RAN device radio access network device
  • base station base station
  • RP radio base station
  • TRP transmission and/or reception point
  • terminal or “terminal device” may be referred to as "user equipment (UE)", “user terminal (user terminal)”, “mobile station (MS)”, “mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc.
  • UE user equipment
  • MS mobile station
  • MT mobile terminal
  • data, information, etc. may be obtained in accordance with the laws and regulations of the country where the data is located.
  • data, information, etc. may be obtained with the user's consent.
  • each element, each row, or each column in the table of the embodiments of the present disclosure may be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns may also be implemented as an independent embodiment.
  • FIG1a is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure.
  • a communication system 100 includes a first terminal 101 , a second terminal 102 , a first network device 103 , and a second network device 104 .
  • the first terminal 101 and/or the second terminal 102 include, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a transportation safety (transportation safety) terminal device, and/or a wireless terminal device in a smart grid. At least one of a wireless terminal device in a smart city, a wireless terminal device in a smart home, but not limited to these.
  • the first network device 103 and/or the second network device 104 may include at least one of an access network device and a core network device.
  • the access network device is, for example, a node or device that accesses a terminal to a wireless network.
  • the access network device may include an evolved Node B (eNB), a next generation evolved Node B (ng-eNB), a next generation Node B (gNB), a node B (NB), a home node B (HNB), a home evolved node B (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, and at least one of an access node in a Wi-Fi system, but is not limited thereto.
  • eNB evolved Node B
  • ng-eNB next generation evolved Node B
  • gNB next generation Node B
  • NB node
  • the first network device 103 and the second network device 104 are both base stations.
  • the base station is, for example, a macro base station, a micro base station (also called a small station), a relay station, an access point, a 5G base station or a future base station, a satellite, a transmission point (Transmitting and Receiving Point, TRP), a transmitting point (Transmitting Point, TP), a mobile switching center, or other devices that assume the function of a base station in a communication system, etc., which are not specifically limited in the embodiments of the present disclosure.
  • TRP Transmission Point
  • TP transmitting Point
  • the devices that provide wireless communication functions for terminal devices are collectively referred to as network devices or base stations.
  • the core network device may be a device including a first network element, a second network element, etc., or may be a plurality of devices or a group of devices including all or part of the first network element, the second network element, etc.
  • the network element may be virtual or physical.
  • the core network may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), and a Next Generation Core (NGC).
  • EPC Evolved Packet Core
  • 5GCN 5G Core Network
  • NGC Next Generation Core
  • the technical solution of the present disclosure may be applicable to the Open RAN architecture.
  • the interfaces between access network devices or within access network devices involved in the embodiments of the present disclosure may become internal interfaces of Open RAN, and the processes and information interactions between these internal interfaces may be implemented through software or programs.
  • the access network device may be composed of a centralized unit (central unit, CU) and a distributed unit (distributed unit, DU), wherein the CU may also be called a control unit (control unit).
  • the CU-DU structure may be used to split the protocol layer of the access network device, with some functions of the protocol layer being centrally controlled by the CU, and the remaining part or all of the functions of the protocol layer being distributed in the DU, and the DU being centrally controlled by the CU, but not limited to this.
  • the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure.
  • a person of ordinary skill in the art can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.
  • the following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG. 1a, or part of the subject, but are not limited thereto.
  • the subjects shown in FIG. 1a are examples, and the communication system may include all or part of the subjects in FIG. 1a (for example, the communication system 100 includes the first terminal 101, The second terminal 102 and the first network device 103; or, the communication system 100 includes the first terminal 101 and the second terminal 102), and may also include other entities other than Figure 1a.
  • the number and form of each entity are arbitrary, each entity may be physical or virtual, and the connection relationship between the entities is an example.
  • the entities may be connected or disconnected, and the connection may be in any manner, which may be direct or indirect, and may be wired or wireless.
  • LTE Long Term Evolution
  • LTE-A LTE-Advanced
  • LTE-B LTE-Beyond
  • SUPER 3G IMT-Advanced
  • 4G the fourth generation mobile communication system
  • 5G 5G new radio
  • FAA Future Radio Access
  • RAT New Radio
  • NR New Radio
  • NX New radio access
  • the present invention relates to wireless communication systems such as LTE, Wi-Fi (X), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) network, Device to Device (D2D) system, Machine to Machine (M2M) system, Internet of Things (IoT) system, Vehicle to Everything (V2X), systems using other communication methods, and next-generation systems expanded based on them.
  • PLMN Public Land Mobile Network
  • D2D Device to Device
  • M2M Machine to Machine
  • IoT Internet of Things
  • V2X Vehicle to Everything
  • systems using other communication methods and next-generation systems expanded based on them.
  • next-generation systems expanded based on them.
  • a combination of multiple systems for example, a combination of
  • the network will configure the UE to perform measurements, and the network will send a handover request to the target cell of the handover according to the measurement results reported by the UE.
  • the network sends a handover command to the UE, such as sending a Reconfiguration with sync signaling.
  • the handover command may carry the configuration information of the target cell, which may include bearer configuration, MAC configuration and random access configuration.
  • the UE will synchronize with the target cell, then initiate a random access process to access the target cell, and start using the configuration of the target cell.
  • a UE may not be directly connected to a base station but may communicate with the base station through the relay function of another UE, wherein the UE that is not connected to the base station is called a remote UE (Remote UE), and the UE that provides a relay function is called a relay UE (Relay UE).
  • the remote UE and the relay UE communicate via Sidelink unicast, and this architecture is called U2N (UE to Network, also known as UE to NW) relay.
  • U2N UE to Network, also known as UE to NW
  • the direct communication interface between UE and UE is PC-5.
  • the UE and the base station communicate through the cellular network communication interface Uu.
  • the remote UE and the base station can implement related communications of the Service Data Adaptation Protocol (SDAP) and the Packet Data Convergence Protocol (PDCP) through the Uu interface.
  • SDAP Service Data Adaptation Protocol
  • PDCP Packet Data Convergence Protocol
  • the Sidelink Relay Adaptation Protocol (SRAP), Radio Link Control (RLC), Medium Access Control (MAC), and Physical layer (PHY) related communications can be implemented between the remote UE and the relay UE through the PC-5 interface.
  • SRAP Sidelink Relay Adaptation Protocol
  • RLC Radio Link Control
  • MAC Medium Access Control
  • PHY Physical layer
  • a unicast connection is established between UEs, that is, a PC5-RRC (RRC: Radio Resource Control) connection is established.
  • PC5-RRC Radio Resource Control
  • a notification message can be sent to the connected remote UE via the sidelink, such as NotificationMessageSidelink signaling.
  • the remote UE receives the notification message, the remote UE in the CONNECTED state triggers a reestablishment, and the remote UE in the IDLE state and the INACTIVE state can decide whether to release the connection with the relay UE. If the connection with the relay UE is not released, and if the notification message indicates that the relay UE has undergone a handover/cell reselection, the remote UE also believes that it has undergone a handover/cell reselection.
  • the network may switch the path of the remote UE from one relay UE to another relay UE.
  • the network sends a path switching signaling to the remote UE, such as sending a pathswitch signaling, which may carry the identifier of the target relay UE.
  • the remote UE After the remote UE receives the path switching signaling, the remote UE establishes a sidelink unicast connection with the target relay UE, and then the remote UE can transmit data with the network through the target relay UE.
  • the traditional switching process is reused.
  • Multi-hop U2N relay the architecture in which the remote UE maintains connection with the network through multiple relay UEs.
  • the manner in which the relay UE and the connected remote UE change the path together is called group mobility.
  • the direct connection between the UE and the base station is called a direct path (Direct Path)
  • the connection between the UE and the base station through a relay UE is called an indirect path (Indirect Path).
  • Direct Path direct path
  • Indirect Path indirect path
  • the remote UE in order to improve the transmission rate and transmission reliability, can maintain a connection with the network through multiple paths at the same time. This function is called multipath connection.
  • the remote UE can support multipath connection when it is in a connected state.
  • the multiple paths can include direct paths and indirect paths.
  • the bearer of the remote UE may be transmitted through a direct path, which may be referred to as a direct bearer (Direct Bearer).
  • the bearer of the remote UE may also be transmitted through an indirect path, which may be referred to as an indirect bearer (Indirect Bearer).
  • the bearer of the remote UE may also be transmitted through a direct path and an indirect path, which may be referred to as a multipath bearer (Multipath Bearer).
  • the following describes an embodiment based on an example in which the first terminal 101 is a remote UE of the second terminal 102 and the second terminal 102 is a relay UE of the first terminal 101 .
  • FIG2 is an interactive schematic diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG2 , the present disclosure embodiment relates to a communication method, which is used in a communication system 100, and the method includes:
  • Step S201 the first network device 103 sends a first command to the first terminal 101.
  • the names of commands, etc. are not limited to the names recorded in the embodiments, and terms such as “command”, “information”, “message”, “signal”, “signaling”, “report”, “configuration”, “indication”, “instruction”, “channel”, “parameter”, “domain”, “field”, “symbol”, “symbol”, “codeword”, “codebook”, “codeword”, “codepoint”, “bit”, “data”, “program”, and “chip” can be used interchangeably.
  • the first terminal 101 receives a first command.
  • the first command is used to control the radio bearer of the first terminal 101.
  • the first command is used to control the data transmission state of the radio bearer of the first terminal 101.
  • the name of the first command is not limited, and it may be, for example, radio bearer configuration signaling, state control signaling, data transmission control signaling, etc.
  • the first command is sent by the first network device 103 to the first terminal 101 before instructing the second terminal 102 to start path switching.
  • the first network device 103 sends the first command to the first terminal 101 via a direct path.
  • the direct path represents a path where the first network device 103 is directly connected to the first terminal 101.
  • the first network device 103 sends the first command to the first terminal 101 via an indirect path.
  • the indirect path represents a path in which the first terminal 101 is indirectly connected to the first network device 103 via the second terminal 102.
  • the indirect path also includes other relay terminals except the second terminal 102.
  • the first command is a first path switching command.
  • the first path switching command is a group path switching command.
  • group path switching refers to a path switching mode in which the relay UE and the connected remote UE switch paths to the same target node, and during the path switching process, the relay UE and the remote UE maintain a sidelink connection.
  • the first network device 103 sends a reconfiguration with sync signaling, and the reconfiguration with sync signaling carries or includes the first command.
  • the first terminal 101 receives the reconfiguration with sync signaling and obtains the first command.
  • the first network device 103 sends a path switch signaling, and the path switch signaling carries or includes the first command.
  • the first terminal 101 receives the path switch signaling and obtains the first command.
  • the first command is a Packet Data Convergence Protocol (PDCP) control signaling.
  • PDCP Packet Data Convergence Protocol
  • the first network device 103 sends a PDCP control signaling, and the PDCP control signaling carries or includes the first command.
  • the first terminal 101 receives the PDCP control signaling to obtain the first command.
  • the first command may include a first instruction.
  • the first command is the same as the first instruction.
  • the first instruction is used to indicate that the first network device 103 instructs the first terminal 101 to suspend data transmission of the radio bearer.
  • the name of the first instruction is not limited, and it is, for example, a radio bearer configuration signaling, a state control signaling, a data transmission control signaling, etc.
  • the first command may include a second instruction.
  • the first command is the same as the second instruction.
  • the second instruction is used to indicate that the first network device 103 instructs the first terminal 101 to maintain data transmission of the radio bearer.
  • the name of the second instruction is not limited, and it can be, for example, radio bearer configuration signaling, state control signaling, data transmission control signaling, etc.
  • Step S202 If the first terminal 101 determines that the first command is used to instruct the first terminal 101 to suspend data transmission of the radio bearer, the first terminal 101 suspends data transmission of the radio bearer.
  • the radio bearer is a radio bearer for data transmission via an indirect path.
  • the indirect path represents a path for connecting the first terminal 101 to the first network device 103 via the second terminal 102.
  • the indirect path may also include other relay UEs in addition to the second terminal 102.
  • the object whose transmission of the radio bearer of the first terminal 101 is suspended includes a PDCP data packet and/or an RLC data packet. For example, if the first terminal 101 determines that the first command is used to instruct the first terminal 101 to suspend data transmission of the radio bearer, the first terminal 101 suspends the transmission of the PDCP data packet and/or the RLC data packet on the radio bearer.
  • the object whose transmission of the radio bearer of the first terminal 101 is suspended does not include signaling. For example, if the first terminal 101 determines that the first command is used to instruct the first terminal 101 to suspend data transmission of the radio bearer, the first terminal 101 suspends the transmission of PDCP data packets and/or RLC data packets of the radio bearer, but the radio bearer of the first terminal 101 can transmit signaling.
  • the first command may be set to instruct the first terminal 101 to suspend data transmission of the radio bearer. In this way, the first terminal 101 suspends data transmission of the radio bearer in response to receiving the first command.
  • the first network device 103 sends the first command to the first terminal 101 before instructing the second terminal 102 to start path switching. In some embodiments, the first network device 103 may send the first command to the first terminal 101 when it is known that the second terminal 102 will cause the serving cell of the second terminal 102 to change after the path switching, and before the first network device 103 instructs the second terminal 102 to start path switching.
  • preset can be interchangeable, and “preset A”, “preset A”, “set A”, and “agreement A” can be interpreted as A pre-specified in an agreement, etc.
  • a first instruction may be configured in the first command, and the first instruction is used to instruct the first terminal 101 to suspend data transmission of the radio bearer.
  • the first terminal 101 receives the first command, if the first terminal 101 determines that the first command carries the first instruction, the first terminal 101 determines that the first command is used to instruct the first terminal 101 to suspend data transmission of the radio bearer by the first network device 103, and then the first terminal 101 suspends data transmission of the radio bearer.
  • the first network device 103 may send the first command including the first instruction to the first terminal 101 when it is known that the second terminal 102 will cause the serving cell of the second terminal 102 to change after performing a path switch.
  • the first terminal 101 determines that the first command is used to instruct the first terminal 101 to maintain data transmission of the radio bearer, the first terminal 101 maintains data transmission of the radio bearer.
  • a second instruction may be configured in the first command, and the second instruction is used to instruct the first terminal 101 to maintain data transmission of the radio bearer. In this way, when the first terminal 101 receives the first command, if the first terminal 101 determines that the first command carries the second instruction, the first terminal 101 maintains data transmission of the radio bearer.
  • the first network device 103 may send the first command including the second instruction to the first terminal 101 when it is known that the second terminal 102 will not cause the service cell of the second terminal 102 to change after performing a path switch.
  • Step S203 the first terminal 101 sends a third instruction to the first network device 103.
  • the first terminal 101 executes step S203 , and the first terminal 101 sends a third instruction to the first network device 103 .
  • step S203 when the first terminal 101 receives the first command for instructing the first terminal 101 to suspend data transmission of the radio bearer, step S203 is performed, and the first terminal 101 sends a third instruction to the first network device 103.
  • the first network device 103 receives a third instruction.
  • the third instruction is used to indicate the number of the data packet that the first terminal 101 has successfully sent to the second terminal 102 .
  • the third instruction is used to indicate the number of data packets that the first terminal 101 has successfully sent to the second terminal 102 within a recent period of time.
  • the name of the third instruction is not limited, and it can be, for example, a data packet number sequence, a data packet number set, etc.
  • Step S204 the first network device 103 instructs the second terminal 102 to start path switching.
  • the first network device 103 receives the third instruction.
  • the first network device 103 determines whether each data packet corresponding to each number sent by the second terminal 102 is received according to the number indicated by the third instruction. While or after determining that each data packet corresponding to each number sent by the second terminal 102 is received, the first network device 103 executes step S204, and the first network device 103 instructs the second terminal 102 to start path switching.
  • the first network device 103 instructs the second terminal 102 to start path switching by: the first network device 103 sends a second path switching command to the second terminal 102 .
  • the second terminal 102 receives the second path switching command.
  • the second terminal 102 initiates access to the target node in response to receiving the second path switching command.
  • the target node may be determined according to the target node identifier carried in the second path switching command.
  • the target node is a cell or a relay terminal.
  • the second path switching command is used to instruct the second terminal 102 to start path switching.
  • the first network device 103 sends reconfiguration with sync synchronous reconfiguration signaling, and the reconfiguration with sync signaling carries or includes the second path switching command.
  • the second terminal 102 receives the reconfiguration with sync signaling and obtains the second path switching command.
  • the first network device 103 sends path switch path switching signaling, and the path switch signaling carries or includes the second path switching command.
  • the second terminal 102 receives the path switch signaling and obtains the second path switching command.
  • Step S205 The second terminal 102 sends a fourth instruction to the first terminal 101 .
  • step S205 is executed, and the second terminal 102 sends a fourth instruction to the first terminal 101 .
  • the target node is a cell
  • the target node is a relay terminal
  • the first terminal 101 receives a fourth instruction.
  • the fourth instruction is used to indicate to the second terminal 102 that the path switching is successful.
  • the fourth instruction is used to instruct the first terminal 101 to resume data transmission of the radio bearer.
  • the name of the fourth instruction is not limited, and it may be, for example, radio bearer configuration signaling, state control signaling, data transmission control signaling, etc.
  • the fourth instruction is carried in a NotificationMessageSidelink sidelink notification message.
  • the second terminal 102 sends a NotificationMessageSidelink, and the NotificationMessageSidelink carries or includes the fourth instruction.
  • the first terminal 101 receives the NotificationMessageSidelink and obtains the fourth instruction.
  • Step S206 the second network device 104 sends a fifth instruction to the first terminal 101 .
  • the network device to which the second terminal 102 is connected after the path switching is successful is called the second network device 104.
  • the second network device 104 determines that the second terminal 102 has successfully accessed, the second network device 104 sends a fifth instruction to the first terminal 101.
  • the first terminal 101 receives a fifth instruction.
  • the fifth instruction is used to indicate to the second terminal 102 that the path switching is successful.
  • the fifth instruction is used to instruct the first terminal 101 to resume data transmission of the radio bearer.
  • the fifth instruction is carried in an RRC Reconfiguration RRC reconfiguration message.
  • the second network device 104 sends an RRC Reconfiguration message, and the RRC Reconfiguration message carries or includes the fifth instruction.
  • the first terminal 101 receives the RRC Reconfiguration message and obtains the fifth instruction.
  • the second network device 104 and the first network device 103 are the same network device.
  • Step S207 The first terminal 101 resumes data transmission of the radio bearer.
  • the first terminal 101 executes step S207, and the first terminal 101 resumes data transmission of the radio bearer.
  • the first terminal 101 executes step S207, and the first terminal 101 resumes data transmission of the radio bearer.
  • the first terminal 101 after the first terminal 101 resumes data transmission of the radio bearer, the first terminal 101 sends data to the second network device 104 through the second terminal 102. For example, a PDCP data packet and/or an RLC data packet is sent.
  • the second terminal 102 may still have PDCP PDU (Protocol Data Unit) sent by the first terminal 101 that has not been sent to the first network device 103. At this time, the second terminal 102 will disconnect from the first network device 103 to access the new path. After the second terminal accesses the new path, if the PDCP encryption key changes, these PDCP PDUs cannot be parsed by the cells in the new path, resulting in the loss of these data.
  • PDCP PDU Protocol Data Unit
  • the first terminal before the second terminal performs path switching, the first terminal can be connected to the second terminal through the second terminal.
  • the state of the wireless bearer for data transmission is controlled to avoid the loss of data sent by the first terminal to the network due to the path switching of the second terminal, or to avoid the problem that the data sent by the first terminal to the network cannot be parsed by the network due to the path switching of the second terminal.
  • the communication method involved in the embodiment of the present disclosure may include at least one of steps S201 to S207.
  • step S201 may be implemented as an independent embodiment
  • step S201 and step S202 may be implemented as independent embodiments
  • step S201, step S202, and step S207 may be implemented as independent embodiments, but are not limited thereto.
  • step S202 and step S203 may be executed in an exchanged order or simultaneously, and step S205 and step S206 may be executed in an exchanged order or simultaneously.
  • steps S203 to S207 are optional, and one or more of these steps may be omitted or replaced in different embodiments.
  • steps S202 to S207 are optional, and one or more of these steps may be omitted or replaced in different embodiments.
  • FIG3a is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG3a, the present disclosure embodiment relates to a communication method, which is executed by the first terminal 101, and the communication method includes:
  • Step S3101 obtain the first command.
  • step S3101 can refer to the optional implementation of step S201 in FIG. 2 and other related parts in the embodiment involved in FIG. 2 , which will not be described in detail here.
  • the first terminal 101 receives the first command sent by the first network device 103, but is not limited thereto and may also receive the first command sent or forwarded by other entities.
  • the first terminal 101 obtains a first command specified by the protocol.
  • the first terminal 101 obtains the first command from an upper layer(s).
  • the first terminal 101 performs processing to obtain the first command.
  • step S3101 is omitted, and the first terminal 101 autonomously implements the function indicated by the first command, or the above function is default or acquiescent.
  • the first command is sent by the first network device 103 before instructing the second terminal 102 to start path switching.
  • Step S3102 determine whether the first command indicates to suspend data transmission of the radio bearer.
  • step S3102 can refer to the optional implementation of step S202 in FIG. 2 and other related parts in the embodiment involved in FIG. 2 , which will not be described in detail here.
  • step S3103 If it is determined that the first command is used to instruct to suspend the data transmission of the radio bearer, step S3103 is executed. If it is determined that the first command is used to instruct to maintain the data transmission of the radio bearer, step S3104 is executed.
  • Step S3103 suspend data transmission of the radio bearer.
  • step S3103 can refer to the optional implementation of step S202 in FIG. 2 and the embodiment involved in FIG. 2. Other related parts will not be elaborated here.
  • the operation of suspending data transmission of the radio bearer is determined based on a first command instructing to suspend data transmission of the radio bearer.
  • Step S3104 Maintain data transmission of the wireless bearer.
  • step S3104 can refer to the optional implementation of step S202 in FIG. 2 and other related parts in the embodiment involved in FIG. 2 , which will not be described in detail here.
  • the operation of continuing to maintain data transmission of the radio bearer is determined based on the first command instructing to maintain data transmission of the radio bearer.
  • Step S3105 sending a third instruction.
  • step S3105 can refer to the optional implementation of step S203 in FIG. 2 and other related parts in the embodiment involved in FIG. 2 , which will not be described in detail here.
  • the first terminal 101 sends the third instruction to the first network device 103, but is not limited thereto, and the third instruction may also be sent to other entities.
  • the third instruction is used by the first network device 103 to obtain the number of the data packet that the first terminal 101 has successfully sent to the second terminal 102, and then determine whether to instruct the second terminal 102 to start path switching.
  • Step S3106 obtaining the fourth instruction.
  • step S3106 can refer to the optional implementation of step S205 in FIG. 2 and other related parts in the embodiment involved in FIG. 2 , which will not be described in detail here.
  • the first terminal 101 receives the fourth instruction sent by the second terminal 102, but is not limited thereto, and may also receive the fourth instruction sent by other entities.
  • the first terminal 101 obtains a fourth instruction specified by the protocol.
  • the first terminal 101 obtains the fourth instruction from an upper layer(s).
  • the first terminal 101 performs processing to obtain the fourth instruction.
  • step S3106 is omitted, and the first terminal 101 autonomously implements the function indicated by the fourth instruction, or the above function is default or acquiescent.
  • Step S3107 obtain the fifth instruction.
  • step S3107 can refer to the optional implementation of step S206 in FIG. 2 and other related parts in the embodiment involved in FIG. 2 , which will not be described in detail here.
  • the first terminal 101 receives the fifth instruction sent by the second network device 104, but is not limited thereto, and may also receive the fifth instruction sent or forwarded by other entities.
  • the first terminal 101 obtains a fifth instruction specified by the protocol.
  • the first terminal 101 obtains the fifth instruction from an upper layer(s).
  • the first terminal 101 performs processing to obtain the fifth instruction.
  • step S3107 is omitted, and the first terminal 101 autonomously implements the function indicated by the fifth instruction, or the above function is default or acquiescent.
  • Step S3108 resuming data transmission of the radio bearer.
  • step S3108 can refer to the optional implementation of step S207 in FIG. 2 and other related parts in the embodiment involved in FIG. 2 , which will not be described in detail here.
  • the communication method involved in the embodiment of the present disclosure may include at least one of steps S3101 to S3108.
  • step S3103 may be implemented as an independent embodiment
  • step S3101 and step S3103 may be implemented as independent embodiments
  • step S3101, step S3102, and step S3103 may be implemented as independent embodiments, but are not limited thereto.
  • step S3106 and step S3107 may be performed in an interchangeable order or simultaneously.
  • step S3101, step S3102, and step S3104 to step S3108 are optional, and one or more of these steps may be omitted or replaced in different embodiments.
  • steps S3102 to S3108 are optional, and one or more of these steps may be omitted or replaced in different embodiments.
  • FIG3b is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG3a, the present disclosure embodiment relates to a communication method, which is executed by the first terminal 101, and the communication method includes:
  • Step S3201 obtain the first command.
  • step S3201 can refer to step S201 in FIG. 2 , the optional implementation of step S3101 in FIG. 3 a , and other related parts in the embodiments involved in FIG. 2 and FIG. 3 a , which will not be described in detail here.
  • Step S3202 suspend data transmission of the radio bearer.
  • step S3202 can refer to step S202 of FIG. 2 , step S3102 of FIG. 3 a , the optional implementation of step S3103 , and other related parts in the embodiments involved in FIG. 2 and FIG. 3 a , which will not be described in detail here.
  • Step S3203 sending a third instruction.
  • step S3203 can refer to step S203 in FIG. 2 , the optional implementation of step S3105 in FIG. 3 a , and other related parts in the embodiments involved in FIG. 2 and FIG. 3 a , which will not be described in detail here.
  • Step S3204 obtain the fourth instruction.
  • step S3204 can refer to the optional implementation of step S205 in FIG. 2 , step S3106 in FIG. 3 a , and other related parts in the embodiments involved in FIG. 2 and FIG. 3 a , which will not be described in detail here.
  • Step S3205 Resume data transmission of the radio bearer.
  • step S3205 can refer to the optional implementation of step S207 in FIG. 2 , step S3108 in FIG. 3 a , and other related parts in the embodiments involved in FIG. 2 and FIG. 3 a , which will not be described in detail here.
  • the communication method involved in the embodiment of the present disclosure may include at least one of steps S3201 to S3205.
  • step S3202 may be implemented as an independent embodiment
  • step S3201 and step S3202 may be implemented as independent embodiments
  • step S3201, step S3202, and step S3205 may be implemented as independent embodiments, but are not limited thereto.
  • step S3201 and step S3203 to step S3205 are optional, and one or more of these steps may be omitted or replaced in different embodiments.
  • FIG3c is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG3c, the present disclosure embodiment relates to a communication method, which is executed by the first terminal 101, and the communication method includes:
  • Step S3301 obtain the first command.
  • step S3301 can refer to the optional implementation of step S201 in Figure 2, step S3101 in Figure 3a, and other related parts in the embodiments involved in Figures 2 and 3a, which will not be repeated here.
  • Step S3302 suspend data transmission of the radio bearer.
  • step S3302 can refer to step S202 of FIG. 2 , step S3102 of FIG. 3 a , the optional implementation of step S3103 , and other related parts in the embodiments involved in FIG. 2 and FIG. 3 a , which will not be described in detail here.
  • Step S3303 sending a third instruction.
  • step S3303 can refer to step S203 in FIG. 2 , the optional implementation of step S3105 in FIG. 3 a , and other related parts in the embodiments involved in FIG. 2 and FIG. 3 a , which will not be described in detail here.
  • Step S3304 obtain the fifth instruction.
  • step S3304 can refer to the optional implementation of step S206 in FIG. 2 , step S3107 in FIG. 3 a , and other related parts in the embodiments involved in FIG. 2 and FIG. 3 a , which will not be described in detail here.
  • Step S3305 resuming data transmission of the radio bearer.
  • step S3305 can refer to the optional implementation of step S207 in Figure 2, step S3108 in Figure 3a, and other related parts in the embodiments involved in Figures 2 and 3a, which will not be repeated here.
  • the communication method involved in the embodiment of the present disclosure may include at least one of step S3301 to step S3305.
  • step S3302 may be implemented as an independent embodiment
  • step S3301 and step S3302 may be implemented as independent embodiments
  • step S3301, step S3302 and step S3305 may be implemented as independent embodiments, but are not limited thereto.
  • step S3301 and step S3303 to step S3305 are optional, and one or more of these steps may be omitted or replaced in different embodiments.
  • FIG3d is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG3d, the embodiment of the present disclosure relates to a communication method, which is executed by the first terminal 101, and the communication method includes:
  • Step S3401 obtain the first command.
  • step S3401 can refer to the optional implementation of step S201 in Figure 2, step S3101 in Figure 3a, and other related parts in the embodiments involved in Figures 2 and 3a, which will not be repeated here.
  • Step S3402 suspend data transmission of the radio bearer.
  • step S3402 can refer to step S202 of FIG. 2 , step S3102 of FIG. 3 a , the optional implementation of step S3103 , and other related parts in the embodiments involved in FIG. 2 and FIG. 3 a , which will not be described in detail here.
  • step S3401 may include at least one of step S3401 and step S3402.
  • step S3402 can be implemented as an independent embodiment, but is not limited thereto.
  • step S3401 is optional, and one or more of these steps may be omitted or replaced in different embodiments.
  • FIG4a is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG4a, the present disclosure embodiment relates to a communication method, which is executed by the second terminal 102, and the communication method includes:
  • Step S4101 sending the first command.
  • step S4101 can refer to the optional implementation of step S201 in FIG. 2 and other related parts in the embodiment involved in FIG. 2 , which will not be described in detail here.
  • the second terminal 102 forwards the first command sent by the first network device 103 to the first terminal 101, but is not limited thereto.
  • the second terminal 102 may also forward the first command to other entities.
  • the first command is used by the first terminal to suspend data transmission of the radio bearer according to the effect of the first command being to instruct to suspend data transmission of the radio bearer.
  • Step S4102 Acquire a second path switching command.
  • step S4102 can refer to the optional implementation of step S204 in FIG. 2 and other related parts in the embodiment involved in FIG. 2 , which will not be described in detail here.
  • the second terminal 102 receives the second path switching command sent by the first network device 103, but is not limited thereto, and may also receive the second path switching command sent by other entities.
  • the second terminal 102 obtains a second path switching command specified by the protocol.
  • the second terminal 102 obtains a second path switching command from an upper layer(s).
  • the second terminal 102 performs processing to obtain a second path switching command.
  • step S4102 is omitted, and the second terminal 102 autonomously implements the function indicated by the second path switching command, or the above function is default or acquiescent.
  • Step S4103 sending the fourth instruction.
  • step S4103 can refer to the optional implementation of step S205 in FIG. 2 and other related parts in the embodiment involved in FIG. 2 , which will not be described in detail here.
  • the second terminal 102 sends the fourth instruction to the first terminal 101, but is not limited thereto, and the fourth instruction may also be sent to other entities.
  • the fourth instruction is used to instruct the first terminal 101 to resume data transmission of the wireless bearer.
  • the fourth instruction is used to notify the first terminal 101 that the path switching of the second terminal 102 is successful.
  • step S4102 may be implemented as an independent embodiment, but is not limited thereto.
  • step S4102 and step S4103 are optional. In different embodiments, these steps may be One or more steps are omitted or substituted.
  • FIG4b is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG4b, the present disclosure embodiment relates to a communication method, which is executed by the second terminal 102, and the communication method includes:
  • Step S4201 sending the first command.
  • step S4201 can refer to the optional implementation of step S201 in Figure 2, step S4101 in Figure 4a, and other related parts in the embodiments involved in Figures 2 and 4a, which will not be repeated here.
  • Step S4202 sending the fourth instruction.
  • step S4202 can refer to step S205 of FIG. 2 , the optional implementation of step S4103 of FIG. 4 a , and other related parts in the embodiments involved in FIG. 2 and FIG. 4 a , which will not be described in detail here.
  • step S4201 may be implemented as an independent embodiment, but is not limited thereto.
  • step S4202 is optional, and one or more of these steps may be omitted or replaced in different embodiments.
  • FIG5a is a schematic diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG5a, the embodiment of the present disclosure relates to a communication method, and the method includes:
  • Step S5101 A first terminal receives a first command, where the first command is sent by a first network device to the first terminal before instructing a second terminal to start path switching.
  • step S5101 can refer to the optional implementation of step S201 in Figure 2, step S3101 in Figure 3a, step S4101 in Figure 4a, and other related parts in the embodiments involved in Figures 2, 3a, and 4a, which will not be repeated here.
  • Step S5102 suspend the data transmission of the radio bearer according to the function of the first command to instruct the first terminal to suspend the data transmission of the radio bearer.
  • step S5102 can refer to the optional implementation of step S202 in Figure 2, step S3103 in Figure 3a, step S4101 in Figure 4a, and other related parts in the embodiments involved in Figures 2, 3a, and 4a, which will not be repeated here.
  • the above method may include the communication method described in the above embodiments of the communication system side, the first terminal side, the second terminal side, the first network device side, the second network device side, etc., which will not be repeated here.
  • FIG5b is a schematic diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG5b, the embodiment of the present disclosure relates to a communication method, and the method includes:
  • Step S5201 the second terminal forwards the first command sent by the first network device to the first terminal, the first command is sent by the first network device before instructing the second terminal to start path switching, and the first command is used by the first terminal to instruct the first terminal to suspend data transmission of the wireless bearer according to the effect of the first command, thereby suspending data transmission of the wireless bearer.
  • step S5201 may refer to step S201 in FIG. 2 , step S3101 in FIG. 3 a , and step S3102 in FIG. 4 a .
  • step S4101 and other related parts of the embodiments involved in Figures 2, 3a, and 4a will not be described in detail here.
  • the above method may include the communication method described in the above embodiments of the communication system side, the first terminal side, the second terminal side, the first network device side, the second network device side, etc., which will not be repeated here.
  • FIG5c is a schematic diagram of a communication method according to an embodiment of the present disclosure.
  • the embodiment of the present disclosure relates to a communication method, which is executed by a network device, and the method includes:
  • Step S5301 sending the first command.
  • step S5301 can refer to the optional implementation of step S201 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.
  • the network device sends the first command to the first terminal 101, but is not limited thereto, and the first command may also be sent to other entities.
  • Step S5302 receiving a third instruction.
  • step S5302 can refer to the optional implementation of step S203 in FIG. 2 and other related parts in the embodiment involved in FIG. 2 , which will not be described in detail here.
  • the network device receives the third instruction sent by the first terminal 101, but is not limited thereto, and may also receive the third instruction sent by other entities.
  • the network device obtains a third instruction specified by the protocol.
  • the network device obtains the third instruction from an upper layer(s).
  • the network device performs processing to obtain the third instruction.
  • step S5302 is omitted, and the network device autonomously implements the function indicated by the third instruction, or the above function is default or default.
  • Step S5303 Send a second path switching command.
  • step S5303 can refer to the optional implementation of step S204 in FIG. 2 and other related parts in the embodiment involved in FIG. 2 , which will not be described in detail here.
  • Step S5304 sending the fifth instruction.
  • step S5304 can refer to the optional implementation of step S206 in FIG. 2 and other related parts in the embodiment involved in FIG. 2 , which will not be described in detail here.
  • the network device sends the fifth instruction to the first terminal 101, but is not limited to this, and the fifth instruction may also be sent to other entities.
  • step S5301 may be implemented as an independent embodiment, but is not limited thereto.
  • steps S5302 to S5304 are optional, and one or more of these steps may be omitted or replaced in different embodiments.
  • FIG5d is a schematic diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG5d, the present disclosure embodiment relates to a communication method. The method is performed by a network device, and the method includes:
  • Step S5401 before instructing the second terminal to start path switching, sending a first command to the first terminal, the first command is used for the first terminal to instruct the first terminal to suspend data transmission of the radio bearer according to the effect of the first command, suspending data transmission of the radio bearer.
  • step S5401 can refer to the optional implementation of step S201 in Figure 2, step S5301 in Figure 5c, and other related parts in the embodiments involved in Figures 2 and 5c, which will not be repeated here.
  • the above method may include the communication method described in the above communication system side, the first terminal side, the second terminal side, the network device side (the first network device side and the second network device side), etc., which will not be repeated here.
  • the present disclosure also provides an interactive mode of a communication method, wherein the remote UE maintains connection with the network through the relay UE.
  • the remote UE is used to perform the following processing:
  • the radio bearers are all radio bearers of the terminal.
  • the radio bearers are radio bearers transmitted through indirect paths.
  • the first command may be a group switching command.
  • the group switching command may be a reconfigurationwithsync or pathswitch signaling.
  • the first command may be PDCP control signaling, and the network sends the first command before triggering the relay UE to perform group path switching.
  • the path switching completion indication may be carried by NotificationMessageSidelink.
  • the second indication may be carried in an RRC reconfiguration message.
  • the group switching command carries an instruction to suspend transmission, and the transmission of all radio bearers is suspended.
  • the network when the new path changes the serving cell, the network may carry a suspension transmission instruction in the group switching command. When the new path does not change the serving cell, the network may indicate in the group switching command not to suspend transmission.
  • the relay UE is used to perform the following processing:
  • the relay UE When the relay UE completes the path switching, it sends a path switching completion indication to the remote UE.
  • the path switching completion indication may be carried by NotificationMessageSidelink.
  • the relay UE determines that the path switching is completed.
  • the target node is a relay UE
  • the RRCReconfigurationComplete message is successfully sent, the relay UE determines that the path switching is completed.
  • part or all of the steps and their optional implementations may be arbitrarily combined with part or all of the steps in other embodiments, or may be arbitrarily combined with optional implementations of other embodiments.
  • the embodiments of the present disclosure also propose a device for implementing any of the above methods, for example, a device is proposed, the above device includes a unit or module for implementing each step performed by the first terminal in any of the above communication methods.
  • a device is also proposed, including a unit or module for implementing each step performed by the second terminal in any of the above communication methods.
  • the division of the units or modules in the above device is only a division of logical functions, which can be fully or partially integrated into one physical entity or physically separated in actual implementation.
  • the units or modules in the device can be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and instructions are stored in the memory.
  • the processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory inside the device or a memory outside the device.
  • CPU central processing unit
  • microprocessor a microprocessor
  • the units or modules in the device may be implemented in the form of hardware circuits, and the functions of some or all of the units or modules may be implemented by designing the hardware circuits.
  • the hardware circuits may be understood as one or more processors; for example, in one implementation, the hardware circuits are application-specific integrated circuits (ASICs), and the functions of some or all of the above units or modules may be implemented by designing the logical relationship of the components in the circuits; for another example, in another implementation, the hardware circuits may be implemented by programmable logic devices (PLDs), and Field Programmable Gate Arrays (FPGAs) may be used as an example, which may include a large number of logic gate circuits, and the connection relationship between the logic gate circuits may be configured by configuring the configuration files, thereby implementing the functions of some or all of the above units or modules. All units or modules of the above devices may be implemented in the form of software called by the processor, or in the form of hardware circuits, or in the form of software called by the processor, and the remaining part may be implemented in
  • the processor is a circuit with signal processing capability.
  • the processor may be a circuit with instruction reading and running capability, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which may be understood as a microprocessor), or a digital signal processor (DSP); in another implementation, the processor may implement certain functions through the logical relationship of a hardware circuit, and the logical relationship of the above hardware circuit may be fixed or reconfigurable, such as a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA.
  • ASIC application-specific integrated circuit
  • PLD programmable logic device
  • the process of the processor loading a configuration document to implement the hardware circuit configuration may be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules.
  • it can also be a hardware circuit designed for artificial intelligence, which can be understood as ASIC, such as Neural Network Processing Unit (NPU), Tensor Processing Unit (TPU), Deep Learning Processing Unit (DPU), etc.
  • ASIC Neural Network Processing Unit
  • NPU Neural Network Processing Unit
  • TPU Tensor Processing Unit
  • DPU Deep Learning Processing Unit
  • FIG6a is a schematic diagram of the structure of a terminal proposed in an embodiment of the present disclosure.
  • the terminal 6100 may include: at least one of a transceiver module 6101 and a processing module 6102.
  • the transceiver module 6101 is used to receive a first command, The first command is sent by the first network device before instructing the second terminal to start path switching.
  • the processing module 6102 is configured to suspend the data transmission of the radio bearer according to the first command being an instruction to suspend the data transmission of the radio bearer.
  • the transceiver module 6101 is used to execute at least one of the communication steps such as sending and/or receiving performed by the first terminal 101 in any of the above communication methods (for example, step S201, step S203, step S205, step S206, but not limited thereto), which will not be described in detail here.
  • the processing module 6102 is used to execute at least one of the other steps (for example, step S202, step S207, but not limited thereto) performed by the first terminal 101 in any of the above communication methods, which will not be described in detail here.
  • FIG6b is a schematic diagram of the structure of a terminal proposed in an embodiment of the present disclosure.
  • the terminal 6200 may include: at least one of the transceiver modules 6201.
  • the transceiver module 6201 is used to forward a first command sent by a first network device to a first terminal, the first command being sent by the first network device before instructing the second terminal to start path switching, the first command being used by the first terminal to instruct the first terminal to suspend data transmission of a radio bearer according to the effect of the first command, suspending data transmission of the radio bearer.
  • the transceiver module 6201 is used to execute at least one of the communication steps such as sending and/or receiving (for example, step S204, step S205, but not limited to this) performed by the second terminal 102 in any of the above communication methods, which will not be repeated here.
  • the communication steps such as sending and/or receiving (for example, step S204, step S205, but not limited to this) performed by the second terminal 102 in any of the above communication methods, which will not be repeated here.
  • FIG6c is a schematic diagram of the structure of a network device proposed in an embodiment of the present disclosure.
  • the network device 6300 may include: a transceiver module 6301.
  • the transceiver module 6301 is used to send a first command to the first terminal before instructing the second terminal to start path switching, and the first command is used for the first terminal to instruct the first terminal to suspend the data transmission of the radio bearer according to the effect of the first command to instruct the first terminal to suspend the data transmission of the radio bearer.
  • the transceiver module 6301 is used to execute at least one of the communication steps such as sending and/or receiving performed by the first network device 103 and/or the second network device 104 in any of the above communication methods (for example, step S201, step S204, step S206, but not limited to these), which are not repeated here.
  • the transceiver module may include a sending module and/or a receiving module, and the sending module and the receiving module may be separate or integrated.
  • the transceiver module may be interchangeable with the transceiver.
  • the processing module can be a module or include multiple submodules.
  • the multiple submodules respectively execute all or part of the steps required to be executed by the processing module.
  • the processing module can be replaced with the processor.
  • FIG7a is a schematic diagram of the structure of a communication device 7100 proposed in an embodiment of the present disclosure.
  • the communication device 7100 may be a network device (e.g., an access network device, a core network device, etc.), or a terminal (e.g., a user device, etc.), or a chip, a chip system, or a processor that supports a network device to implement any of the above methods, or a chip, a chip system, or a processor that supports a terminal to implement any of the above communication methods.
  • the communication device 7100 may be used to implement the method described in the above communication method embodiment, and the details may refer to the description in the above communication method embodiment.
  • the communication device 7100 includes one or more processors 7101.
  • the processor 7101 may be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit.
  • the baseband processor may be used to process the communication protocol and the communication data
  • the central processing unit may be used to process the communication device (such as a base station, a baseband chip, a terminal device, a terminal device, etc.).
  • the communication device 7100 is used to execute any of the above communication methods.
  • the communication device 7100 further includes one or more memories 7102 for storing instructions.
  • the memory 7102 may also be outside the communication device 7100.
  • the communication device 7100 further includes one or more transceivers 7103.
  • the transceiver 7103 performs at least one of the communication steps such as sending and/or receiving in the above method (for example, step S201, step S203, step S204, step S205, step S206, but not limited thereto), and the processor 7101 performs at least one of the other steps (for example, step S202, step S207, but not limited thereto).
  • the transceiver may include a receiver and/or a transmitter, and the receiver and the transmitter may be separate or integrated.
  • the terms such as transceiver, transceiver unit, transceiver, transceiver circuit, etc. may be replaced with each other, the terms such as transmitter, transmission unit, transmitter, transmission circuit, etc. may be replaced with each other, and the terms such as receiver, receiving unit, receiver, receiving circuit, etc. may be replaced with each other.
  • the communication device 7100 may include one or more interface circuits 7104.
  • the interface circuit 7104 is connected to the memory 7102, and the interface circuit 7104 may be used to receive signals from the memory 7102 or other devices, and may be used to send signals to the memory 7102 or other devices.
  • the interface circuit 7104 may read instructions stored in the memory 7102 and send the instructions to the processor 7101.
  • the communication device 7100 described in the above embodiments may be a network device or a terminal, but the scope of the communication device 7100 described in the present disclosure is not limited thereto, and the structure of the communication device 7100 may not be limited by FIG. 7a.
  • the communication device may be an independent device or may be part of a larger device.
  • the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data and programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, a vehicle-mounted device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.
  • Fig. 7b is a schematic diagram of the structure of a chip 7200 provided in an embodiment of the present disclosure.
  • the communication device 7100 may be a chip or a chip system
  • the chip 7200 includes one or more processors 7201, and the chip 7200 is used to execute any of the above communication methods.
  • the chip 7200 further includes one or more interface circuits 7202.
  • the interface circuit 7202 is connected to the memory 7203.
  • the interface circuit 7202 can be used to receive signals from the memory 7203 or other devices, and the interface circuit 7202 can be used to send signals to the memory 7203 or other devices.
  • the interface circuit 7202 can read instructions stored in the memory 7203 and send the instructions to the processor 7201.
  • the interface circuit 7202 executes at least one of the communication steps such as sending and/or receiving in the above method (for example, step S201, step S203, step S204, step S205, step S206, but not limited to these), and the processor 7201 executes at least one of the other steps (for example, step S202, step S207, but not limited to these).
  • interface circuit interface circuit
  • transceiver pin transceiver
  • the chip 7200 further includes one or more memories 7203 for storing instructions.
  • the memory 7203 may be outside the chip 7200.
  • the present disclosure also proposes a storage medium, on which instructions are stored, and when the instructions are executed on the communication device 7100, the communication device 7100 executes any of the above methods.
  • the storage medium is an electronic storage medium.
  • the storage medium is a computer-readable storage medium, but is not limited to this, and it can also be a storage medium readable by other devices.
  • the storage medium can be a non-transitory storage medium, but is not limited to this, and it can also be a temporary storage medium.
  • the present disclosure also proposes a program product, which, when executed by the communication device 7100, enables the communication device 7100 to execute any of the above communication methods.
  • the program product is a computer program product.
  • the present disclosure also proposes a computer program, which, when executed on a computer, enables the computer to execute any one of the above communication methods.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente divulgation concerne un procédé de communication, un équipement utilisateur, un système de communication et un support de stockage. Le procédé de communication comprend les étapes suivantes : un premier équipement utilisateur reçoit une première instruction, la première instruction étant envoyée au premier équipement utilisateur par un premier dispositif de réseau avant d'ordonner à un second équipement utilisateur de démarrer un transfert de trajet ; et en fonction de la fonction de la première instruction consistant à ordonner au premier équipement utilisateur de mettre en pause la transmission de données d'un support radio, met en pause la transmission de données du support radio. De cette manière, l'état de transmission de données d'un support radio d'un premier équipement utilisateur peut être commandé, ce qui permet d'assurer la sécurité des données qui sont transmises au moyen du support radio.
PCT/CN2023/108754 2023-07-21 2023-07-21 Procédé de communication, équipement utilisateur, système de communication et support de stockage Pending WO2025020011A1 (fr)

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CN202380010236.0A CN117280757A (zh) 2023-07-21 2023-07-21 通信方法、终端、通信系统、存储介质

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