WO2022001857A1 - Procédé de gestion de cellule et appareil de communication - Google Patents

Procédé de gestion de cellule et appareil de communication Download PDF

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Publication number
WO2022001857A1
WO2022001857A1 PCT/CN2021/102301 CN2021102301W WO2022001857A1 WO 2022001857 A1 WO2022001857 A1 WO 2022001857A1 CN 2021102301 W CN2021102301 W CN 2021102301W WO 2022001857 A1 WO2022001857 A1 WO 2022001857A1
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WIPO (PCT)
Prior art keywords
cell
network device
information
request
message
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PCT/CN2021/102301
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English (en)
Chinese (zh)
Inventor
耿婷婷
严乐
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华为技术有限公司
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Publication of WO2022001857A1 publication Critical patent/WO2022001857A1/fr

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    • 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
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0061—Transmission or use of information for re-establishing the radio link of neighbour cell information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/00835—Determination of neighbour cell lists
    • H04W36/008357—Determination of target cell based on access point [AP] properties, e.g. AP service capabilities

Definitions

  • the embodiments of the present application relate to the field of communication technologies, and in particular, to a cell management method and a communication device.
  • the network device needs to obtain cell information, and manage the cell according to the cell information.
  • a direct interface such as an Xn or X2 interface may exist between network devices, and the network device may acquire cell information under the other network device through the direct interface with other network devices.
  • some network devices may not have interfaces that can communicate directly, so that the network devices cannot obtain cell information under other network devices that do not have direct communication interfaces, and thus cannot accurately implement cell management.
  • Embodiments of the present application provide a cell management method and a communication device, so as to improve the effect of cell management.
  • an embodiment of the present application provides a cell management method, including: a first network device receiving a first message from a terminal device, where the first message includes information of a neighboring cell, and the neighboring cell includes a second network device The first cell under the network; the first network device sends first request information to the second network device through the core network device according to the first message, where the first request information is used to request community management.
  • the method of reporting neighboring cell information by terminal equipment does not require the exchange of cell information between network equipment, which can be adapted to the scenario of cell management under network equipment that does not have a direct interface. For example, there is no direct interface between the first network equipment and the second network equipment.
  • the first network device can manage the cell under the second network device through the core network device, which can improve the effect of cell management.
  • the information of the neighboring cell includes any one or more of the following information: the identification, bandwidth, load, number of beams, maximum transmit power or period of the reference signal of the neighboring cell.
  • the first request information is used to request activation of the first cell.
  • the first request information includes activation information
  • the activation information indicates one or more of the following information: an activation reason, load information of the first network device, the terminal Load information of the serving cell of the device or target load information of the first cell.
  • the method further includes: determining, by the first network device, that the target cell to be handed over by the terminal device is the first cell; determining, by the first network device, the first cell in a deactivated state.
  • the first network device first determines that the first cell is in a deactivated state, and then sends a first request information request to activate the first cell, which can avoid direct handover The resulting handover fails, thereby improving the effect of cell management.
  • the determining, by the first network device, that the first cell is in a deactivated state includes: the first network device sending the state to the second network device through the core network device request information, where the state request information is used to request a cell in a deactivated state under the second network device; the first network device receives the state indication information from the second network device through the core network device, The state indication information is used to indicate a cell in a deactivated state under the second network device; if the first cell is included in the cells indicated by the state indication information, the first network device determines the The first cell is in a deactivated state.
  • the first request information is further used to request handover to the first cell.
  • the determining, by the first network device, that the first cell is in a deactivated state includes: the first network device sending the first network device to the second network device through the core network device Second request information, where the second request information is used to request handover to the first cell; the first network device receives, through the core network device, a message from the second network device for indicating the first cell Information that the cell is in the deactivated state.
  • the first request information is used to request handover to the first cell or the first request information is used to request to shut down the first cell, and the first cell is in active state.
  • the method further includes: the first network device sends a second message to the terminal device, where the second message is used to instruct the terminal device to obtain the information of the neighboring cell. information.
  • an embodiment of the present application provides a cell management method, including: a second network device receives, through a core network device, first request information from a first terminal device, where the first request information is used to request A cell is managed, and the first request information is determined by the first network device according to a first message sent by a terminal device; wherein the first message includes information about a neighboring cell, and the neighboring cell includes the first message.
  • the first cell under the second network device; the second network device manages the first cell according to the first request information.
  • the embodiments of the present application use the method of reporting neighboring cell information by terminal devices, without the need to exchange cell information between network devices, and can be adapted to cell management scenarios under network devices that do not have direct interfaces, such as between a first network device and a second network device. Without a direct interface, the first network device can manage the cell under the second network device through the core network device, which can improve the effect of cell management.
  • the information of the neighboring cell may include any one or more of the following information: the identification, bandwidth, load, number of beams, maximum transmit power or period of the reference signal of the neighboring cell.
  • the first request information is used to request activation of the first cell.
  • the first request information includes activation information, and the activation information indicates one or more of the following information: an activation reason, load information of the first network device, the terminal Load information of the serving cell of the device or target load information of the first cell;
  • the second network device managing the first cell according to the first request information includes: the second network device activating the first cell according to the activation information.
  • the first request information is used to request handover to the first cell or the first request information is used to request to shut down the first cell, and the first cell is in connected state.
  • an embodiment of the present application provides a communication device, including a communication module, configured to receive a first message from a terminal device, where the first message includes information about a neighboring cell, and the neighboring cell includes a second network device the first cell; the processing module is configured to determine first request information according to the first message, where the first request information is used to request the management of the first cell; the communication module is further configured to pass The core network device sends the first request information to the second network device.
  • the communication device in the embodiment of the present application can be applied to the first network device, and the terminal device reports the information of neighboring cells without exchanging cell information between network devices, and is suitable for the scenario of cell management under the network device without direct interface, If there is no direct interface between the first network device and the second network device, the first network device can manage the cells under the second network device through the core network device, which can improve the effect of cell management.
  • the information of the neighboring cell includes any one or more of the following information: the identification, bandwidth, load, number of beams, maximum transmit power or period of the reference signal of the neighboring cell.
  • the first request information is used to request activation of the first cell.
  • the first request information includes activation information
  • the activation information indicates one or more of the following information: an activation reason, load information of the first network device, the terminal Load information of the serving cell of the device or target load information of the first cell.
  • the processing module is further configured to: determine that the target cell handed over by the terminal device is the first cell; and determine that the first cell is in a deactivated state.
  • the first network device determines that the terminal device needs to perform handover to the first cell under the second network device, it first determines that the first cell is in a deactivated state and sends the first request information to request activation of the first cell, which can avoid direct handover. The handover fails, thereby improving the effect of cell management.
  • the communication module is further configured to send status request information to the second network device through the core network device, where the status request information is used to request the second network device a cell in a deactivated state under the second network device; receiving state indication information from the second network device through the core network device, where the state indication information is used to indicate a cell in a deactivated state under the second network device;
  • the processing module is further configured to determine that the first cell is in a deactivated state when the first cell is included in the cells indicated by the status indication information.
  • the first request information is further used to request handover to the first cell.
  • the communication module is further configured to: send second request information to the second network device through the core network device, where the second request information is used to request the The first cell performs handover; and the information indicating that the first cell is in a deactivated state is received from the second network device through the core network device.
  • the first request information is used to request handover to the first cell or the first request information is used to request to shut down the first cell, and the first cell is in active state.
  • the communication module is further configured to send a second message to the terminal device, where the second message is used to instruct the terminal device to acquire the information of the neighboring cell.
  • an embodiment of the present application provides a communication apparatus, including: a communication module configured to receive, through a core network device, first request information from a first terminal device, where the first request information is used to request a A cell is managed, and the first request information is determined by the first network device according to a first message sent by a terminal device; wherein the first message includes information about a neighboring cell, and the neighboring cell includes the first message. 2.
  • a communication module configured to receive, through a core network device, first request information from a first terminal device, where the first request information is used to request a A cell is managed, and the first request information is determined by the first network device according to a first message sent by a terminal device; wherein the first message includes information about a neighboring cell, and the neighboring cell includes the first message. 2.
  • a first cell under the network device a processing module configured to manage the first cell according to the first request information.
  • the communication apparatus of the embodiment of the present application is applied to a second network device, receives a request from the first network device to manage a subordinate cell of the second network device through the core network device, and manages the cell under the second network device according to the request.
  • the first network device determines the information of the cells under the second network device by reporting the neighbor cell information by the terminal device, without exchanging cell information between the second network device and the first network device, and the first network device and the second network device do not need to exchange cell information between the first network device and the second network device.
  • accurate management of neighboring cells can be achieved through core network devices, which can improve the effect of cell management.
  • the information of the neighboring cell includes any one or more of the following information: the identification, bandwidth, load, number of beams, maximum transmit power or period of the reference signal of the neighboring cell.
  • the first request information is used to request activation of the first cell.
  • the first request information includes activation information
  • the activation information indicates one or more of the following information: an activation reason, load information of the first network device, the terminal Load information of the serving cell of the device or target load information of the first cell
  • the processing module is further configured to activate the first cell by the second network device according to the activation information.
  • This embodiment of the present application introduces the consideration of the relevant current load on the side of the first network device and the required target load, that is, according to the requirements of the first network device, the cell activation is flexibly performed, so as to avoid the waste of resource allocation caused by the configuration of fixed activation parameters Or insufficiency occurs, which helps to improve the utilization of network resources.
  • the first request information is used to request handover to the first cell or the first request information is used to request to shut down the first cell, and the first cell is in connected state.
  • an embodiment of the present application provides a communication device, including: a processor and a memory; the memory is used to store a computer program; the processor is used to execute the computer program stored in the memory, so that The communication apparatus performs the method in any possible implementation manner of the first aspect.
  • an embodiment of the present application provides a communication device, including: a processor and an interface circuit; the interface circuit is configured to receive code instructions and transmit them to the processor; the processor is configured to run the code instructions to execute the method in any possible implementation manner of the first aspect.
  • an embodiment of the present application provides a computer-readable storage medium, where an instruction is stored in the computer-readable storage medium, and when the instruction is executed, the method in any possible implementation manner of the first aspect is executed. accomplish.
  • an embodiment of the present application provides a computer program product, the computer program product includes: computer program code, when the computer program code is executed, the method in any possible implementation manner of the above first aspect is executed .
  • FIG. 1 is a schematic structural diagram of a communication system according to an embodiment of the present application.
  • FIG. 2 is a schematic structural diagram of a network device according to an embodiment of the present application.
  • 3a is one of the schematic flowcharts of a cell management method provided by an embodiment of the present application.
  • 3b is the second schematic flowchart of a cell management method provided by an embodiment of the present application.
  • FIG. 4 is a third schematic flowchart of a cell management method provided by an embodiment of the present application.
  • FIG. 5 is a fourth schematic flowchart of a cell management method provided by an embodiment of the present application.
  • FIG. 6 is one of the schematic structural diagrams of a communication device provided by an embodiment of the present application.
  • FIG. 7 is the second schematic structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 8 is a third schematic structural diagram of a communication device according to an embodiment of the present application.
  • the embodiments of the present application may be applied to a 4G system, a 5G system, a non-terrestrial network (non-terrestrial network, NTN) system, or a future mobile communication system.
  • the system includes at least two network devices, a core network device, and a terminal device.
  • Figure 1 illustrates two network devices, which can be represented by a first network device and a second network device.
  • the terminal device is located in the coverage area of the first network device.
  • the terminal device is a device with a wireless transceiver function, and the terminal device can be deployed on land, including indoors or outdoors.
  • the terminal device can be a handheld device or a vehicle-mounted device; it can also be deployed on the water surface (such as ships, etc.); it can also be deployed in the air (such as planes, balloons and satellites, etc.).
  • the terminal device may specifically be a mobile phone (mobile phone), a tablet computer (pad), a computer with a wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, an industrial control (industrial) terminal device.
  • VR virtual reality
  • AR augmented reality
  • industrial control industrial control
  • Wireless terminal equipment in control wireless terminal equipment in self-driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid, transportation safety ), wireless terminal equipment in a smart city (smart city), wireless terminals in a smart home (smart home), and may also include user equipment (user equipment, UE) and the like.
  • the terminal device may also be a device serving as a terminal function in device to device (device to device, D2D) communication.
  • a network device is a device in a wireless network, such as a radio access network (RAN) node that connects a terminal device to the wireless network.
  • RAN nodes are: base station equipment (generation NodeB, gNB), transmission reception point (TRP), evolved Node B (evolved Node B, eNB), radio network controller ( radio network controller, RNC), Node B (Node B, NB), base station controller (BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved NodeB, or home Node B, HNB), base band unit (BBU), or wireless fidelity (Wifi) access point (AP), integrated access and backhaul (IAB), etc.
  • the network device may also be a device that functions as a base station in D2D communication.
  • a network device may also be an architecture including a centralized unit (CU) and/or a distributed unit (DU).
  • FIG. 2 illustrates a structure of a network device with CU-DU separation, the network device may include a CU node and a DU node.
  • the centralized unit CU node may be divided into a control plane (CU-CP) and a user plane (CU-UP), and the network device may specifically include at least one of the CU-CP, CU-UP, and DU nodes.
  • CU-CP is responsible for the control plane function, mainly including radio resource control (radio resource control, RRC) and packet data convergence protocol (packet data convergence protocol, PDCP)-C.
  • PDCP-C is mainly responsible for encryption and decryption of control plane data, integrity protection, and data transmission.
  • CU-UP is responsible for user plane functions, mainly including service data adaptation protocol (SDAP) and PDCP-U.
  • SDAP service data adaptation protocol
  • SDAP is mainly responsible for processing the data of the core network and mapping the flow to the bearer.
  • PDCP-U is mainly responsible for data plane encryption and decryption, integrity protection, header compression, serial number maintenance, data transmission, etc.
  • CU-CP and CU-UP are connected through E1 interface; CU-CP is connected with DU through F1-C (control plane), and CU-UP is connected with DU through F1-U (user plane).
  • the CU-CP can also be connected to the core network through the Ng interface on behalf of the CU.
  • the PDCP-C may also be deployed in the CU-UP, which is not limited in this embodiment of the present application.
  • the DU node includes a radio link control layer (radio link control, RLC), a medium access control layer (media access control, MAC) and a physical layer (physical layer protocol, PHY).
  • the network device may specifically include RAN devices of the CU node and the DU node.
  • the CU and RAN equipment are connected through the F1 interface, and the RAN equipment includes RLC, MAC and PHY.
  • Core network equipment is mainly responsible for access management and mobility management of terminal equipment, such as registration management, connection management, mobility management, and accessibility management.
  • the core network equipment may include the mobility management function and the access management function, the session management function (SMF), the user plane management function ( At least one core network device of user plane function, UPF); in the 5G network, the core network device may include access and mobility management function (access and mobility management function, AMF), session management function (session management function, SMF), At least one core network device of a user plane function (UPF).
  • AMF access and mobility management function
  • SMF session management function
  • UPF user plane function
  • the first network device reports the information of the neighboring cells through the terminal device, obtains the information of the cells in the neighboring cells that belong to the second network device, and then uses the core network device to report the information of the neighboring cells.
  • the cell under the second network device is managed without the need to exchange cell information between network devices, which is suitable for the scenario of cell management under the network device without a direct interface, such as when the first network device and the second network device do not have a direct interface.
  • the first network device can manage the cell under the second network device through the core network device, which can improve the effect of cell management.
  • the first network device and the second network device may be network devices of the same type in different network systems.
  • the base station devices of the same type in different network systems belong to Inter-system intra-RAT (inter-system intra-RAT)
  • the inter-system is defined by different network systems to which the core network equipment belongs, and the same system is defined by the same type of base station equipment.
  • one of them can be an LTE base station connected to 4G core network equipment, and the other can be an LTE base station connected to 5G core network equipment.
  • the first network device and the second network device may be different network devices in the same network system.
  • the different base station devices in the same network system belong to Intra-system inter-RAT
  • the same system is defined by the same network system to which the core network equipment belongs
  • the inter-system is defined by the different types of base station equipment.
  • one of them can be an LTE base station connected to 5G core network equipment
  • the other can be an NR base station connected to 5G core network equipment.
  • Figure 1 illustrates a core network device, but it is not limited that the messages between the first network device and the second network device pass through a Core network equipment transmission.
  • Embodiments of the present application provide a cell management method and a communication device, which can be applied to the communication system illustrated in FIG. 1 .
  • the network device obtains the information of the cells belonging to other network devices in the neighboring cells based on the neighboring cell information reported by the terminal device, so as to avoid the failure to exchange cell information with the base station without a direct interface and cause errors in the management of the cell.
  • the method and the device solve the problem. Therefore, the method part and the device part of the embodiments can be referred to each other, and the repeated parts will not be repeated.
  • the terminal device, the first network device, the second network device, and/or the core network device may perform some or all of the steps in the embodiments of the present application, and these steps or operations are only examples.
  • the application embodiments may also perform other operations or variations of various operations.
  • various steps may be performed in different orders presented in the embodiments of the present application, and may not be required to perform all the operations in the embodiments of the present application.
  • an embodiment of the present application provides a cell management method, and the method is as follows.
  • the first network device determines the neighboring cells of the serving cell where the terminal device is located.
  • the first network device may determine the neighbor cell of the serving cell where the terminal device is located by using the identifier of the neighbor cell reported by the terminal device.
  • the identifier of the neighboring cell may include cell global identifier (CGI), physical cell identifier (PCI), frequency: absolute radio frequency channel number (ARFCN), cell identifier ( One or more of the cell identifiers), which are not limited in this embodiment of the present application.
  • this step S300 is an optional step, which may be omitted as indicated by a dotted line in FIG. 3a, that is, S301 may be directly executed without executing S300, which is not limited in this embodiment of the present application.
  • the first network device sends a second message to the terminal device, and the terminal device receives the second message from the first network device.
  • the second message is used to instruct the terminal device to acquire information of neighboring cells.
  • the second message includes the information about the aforementioned neighboring cells, and the terminal device, in response to the second message, obtains the information about the neighboring cells included in the second message, and carries the obtained information about the neighboring cells in the first message. sent to the first network device.
  • the second message does not include the information of the aforementioned neighboring cells, and the terminal device acquires the information of the neighboring cells by itself, and carries the acquired information of the neighboring cells in the first message and sends it to the first network device.
  • the first network device may also specifically instruct the terminal device to acquire information of some or all of the neighboring cells, that is, optionally, the second message is used to instruct the terminal device to acquire the information of some or all of the neighboring cells.
  • the first network device may carry the identifiers of one or more neighboring cells in the second message, and the second terminal device receives the second message and obtains the identifiers that belong to the identifiers carried by the second message. information about neighboring cells.
  • the first network device may carry the identifiers of one or more neighboring cells and one or more acquisition flags in the second message, and the identifiers of the neighboring cells correspond to the acquisition flags one-to-one, and the acquisition flags It is used to indicate whether to acquire the information of the neighbor cell corresponding to the acquired flag.
  • the acquisition flag can be set as a bit "0", which is used to instruct the terminal device not to acquire the information of the neighboring cell corresponding to the acquisition flag; Obtain the information of the neighbor cell corresponding to the tag.
  • the first network device may determine a neighbor cell among the neighbor cells that satisfies the condition that the network device to which the neighbor cell belongs does not have a direct interface with the first network device.
  • the neighbor cells that meet the conditions are included in the second message.
  • the acquisition flag corresponding to the identifier of the terminal device is set to bit "1" to instruct the terminal device to acquire the information of the neighboring cell whose network device does not have a direct interface with the first network device.
  • the terminal device acquires the information of the neighboring cell whose network device does not have a direct interface with the first network device, and reports it to the network device.
  • this step S301 is an optional step, which may be omitted as indicated by a dotted line in FIG. 3a, that is, S302 may be directly executed without executing S301, which is not limited in this embodiment of the present application.
  • the terminal device sends a first message to the first network device, and the first network device receives the first message from the terminal device.
  • the first message includes information of neighboring cells, and the neighboring cells include the first cell under the second network device.
  • the information of the neighboring cells may include any one or more of the following information: identification, bandwidth, load, number of beams (beams), maximum transmit power or period of reference signals of the neighboring cells.
  • the reference signal includes: physical broadcast channel block (PBCH Block), synchronization signal block (synchronization signal block, SSB) or synchronization signal/physical broadcast channel block (synchronization signal/physical broadcast channel block, SS/PBCH Block) Wait.
  • the load can be at the network slice level, at the public land mobile network (PLMN) level, at the private network level (non-public network, NPN), or at the service type level.
  • PLMN public land mobile network
  • NPN non-public network
  • the terminal device acquires the information of the neighboring cell by itself, and carries the acquired information of the neighboring cell in the first message and sends it to the first network device.
  • the first network device sends the first request information to the second network device through the core network device according to the first message, and the second network device receives the first request information from the first network device through the core network device.
  • the first request information is used to request management of the first cell. Specifically, the first network device sends the first request information to the core network device, and the core network device then sends the received first request information to the second network device.
  • the first network device reports the information of the neighboring cells through the terminal device, obtains the information of the cells belonging to the second network device in the neighboring cells, and then manages the cells under the second network device through the core network device, There is no need to exchange cell information between network devices, and it is suitable for the scenario of cell management under network devices without direct interfaces.
  • the first network device can pass the core network.
  • the device manages the cells under the second network device, which can improve the effect of cell management.
  • the manner in which the first request information is used to request the management of the first cell and the management of the first cell will be described by way of example.
  • the first cell is in a deactivated state
  • the first request information sent by the first network device in S304 is used to request to activate the first cell.
  • the second network device activates the first cell when receiving the first request information.
  • the first request information is an activation request corresponding to the first cell
  • the second network device performs an activation operation for the first cell when receiving the first request information.
  • the deactivated state of the cell can be understood as the cell is completely closed, the cell closes part of the public channels, the cell only opens part of the public channels, the cell does not support the service for the terminal equipment in the non-connected state, and the cell does not support the terminal equipment in the connected state. service etc.
  • the active state of the cell can be understood as normal transmission of all common channels of the cell or that the cell supports services for terminal equipment in the non-connected state.
  • the first request information includes activation information
  • the activation information indicates one or more of the following information: activation reason, load information of the first network device, load information of the serving cell of the terminal device, or target load of the first cell information.
  • the activation reason can be "load”
  • the target load information of the first cell indicates the load information to be adjusted to the first cell
  • the load information includes resource occupancy rate, guaranteed downlink bit rate (GBR)/non-guaranteed rate (Non-GBR) at least one of information such as usage percentage, cell capacity level, and available capacity percentage.
  • the second network device can activate the first cell according to the activation information contained therein. By carrying the activation information, the second network device flexibly activates the cell according to the requirements of the first network device, avoiding waste or insufficient resource allocation caused by configuring fixed activation parameters, and helping to improve network resource utilization.
  • the first network device may send the first request information to request activation of the first cell based on cell management requirements such as load balancing or cell handover; it may also adjust the status of neighboring cells,
  • the first request information is sent to request to activate a cell in a deactivated state under the second network device, for example, the first cell.
  • the first network device determines that the neighbor needs to share the load and requests to activate the first cell.
  • the first network device sends the first request information to the second network device through the core network device according to the first message, and the foregoing method further includes: the first network device determines that the target cell for load sharing is the first cell ; The first network device determines that the first cell is in a deactivated state.
  • the first network device may determine the target cell for load sharing according to the information of the neighboring cells in the first message.
  • the target cell may be determined according to the bandwidth and/or other information of neighboring cells, for example, considering network energy saving, a cell with a small bandwidth under the second network device is determined as the target cell for load sharing.
  • a target cell that can be used for load sharing is determined by taking into account factors such as the load to be transferred.
  • the first network device determines that cell handover needs to be performed and requests to activate the first cell.
  • the method may further include: the first network device determines that the target cell to be switched by the terminal device is the first cell; the first network device determines The first cell is in a deactivated state.
  • the first network device may store the information of the neighboring cells in the first message, and then determine the target cell to be handed over by the terminal device according to the information of the neighboring cells.
  • the target cell may be determined according to the load of the neighboring cells and/or other information, for example, a cell with a low load under the second network device is determined as the target cell for handover.
  • the embodiment of the present application shows that before S304, "S303: the first network device determines that the first cell is in a deactivated state" is executed. It means that step S303 is performed before S304 when the first request information is used to request activation of the first cell.
  • the first network device may determine that the first cell is in a deactivated state by referring to the following manner (1) or manner (2).
  • the first network device may determine that the first cell is in a deactivated state through the following steps A1 to A3.
  • the first network device sends state request information to the second network device through the core network device, where the state request information is used to request a cell in a deactivated state under the second network device.
  • the first network device sends the state request information to the core network device, and the core network device then sends the received state request information to the second network device.
  • the first network device receives state indication information from the second network device through the core network device, where the state indication information is used to indicate a cell in a deactivated state under the second network device.
  • the second network device sends the state indication information to the core network device, and the core network device then sends the received state indication information to the first network device.
  • the first network device determines that the first cell is in a deactivated state.
  • the first network device when determining that the terminal device needs to switch to the first cell under the second network device, the first network device first sends first request information to the second network device through the core network device, requesting to activate its subordinates in the second network device.
  • the first cell in the deactivated state can avoid handover failure caused by direct handover, thereby improving the cell management effect.
  • this embodiment of the present application does not limit that only the cells in the deactivated state under the second network device can be known through the status request information/status indication information.
  • the aforementioned status request information can also be used to request the status of neighboring cells belonging to the second network device, and correspondingly, the aforementioned status indication information can also be used to indicate the status of neighboring cells belonging to the second network device; Based on the received state indication information, it is determined whether the first cell is in a deactivated state.
  • the first network device may also determine that the first cell is in a deactivated state through the following steps B1 and B2.
  • the first network device sends second request information to the second network device through the core network device, where the second request information is used to request handover to the first cell.
  • the first network device sends the second request information to the core network device, and the core network device then sends the received second request information to the second network device.
  • the first network device receives, through the core network device, information used to indicate that the first cell is in a deactivated state from the second network device.
  • the second network device sends information indicating that the first cell is in a deactivated state to the core network device, and the core network device sends the received information indicating that the first cell is in a deactivated state to the first cell Internet equipment.
  • the second network device can also send the information of the first cell to the first network device through the core network device, and the first network device determines whether to switch the terminal device to the first cell according to the received information of the first cell. A district.
  • the second network device may send a handover failure (HANDOVER FAILURE) message to the core network device, where the handover failure message carries information used to indicate that the first cell is in a deactivated state and/or information about the first cell.
  • the core network device sends a HANDOVER PREARATION FAILURE message to the first network device, where the HANDOVER PREARATION FAILURE message carries information used to indicate that the first cell is in a deactivated state and/or information about the first cell.
  • the second network device when the second network device receives a handover request for the first cell, if the first cell is in a deactivated state, the second network device sends a message indicating the first cell to the first network device through the core network device.
  • the information that the cell is in the deactivated state so that the first network device can obtain the information of the deactivated state of the first cell and/or the information of the first cell, so as to avoid handover of the terminal device to the first cell; or when the first network device determines the handover
  • the terminal device adjusts/transfers the load to the first cell
  • the first network device initiates the first request information requesting to activate the first cell, so as to avoid handover failure.
  • the first request information is used to request activation of the first cell and handover to the first cell.
  • the first request information includes an activation request and a handover request corresponding to the first cell.
  • the first network device may also perform energy saving processing on neighboring cells in an active state under the second network device, such as load balancing, switching cells, and closing/deactivating cells that may not be opened. Then, the first request information is used to request handover to the first cell or the first request information is used to request to close the first cell, and the first cell is in an active state.
  • the first network device may send the status request information for requesting the status of the neighboring cells belonging to the second network device according to the method in the above-mentioned embodiment, and receive the status request information indicating the neighboring cells belonging to the second network device.
  • Status indication information for the state The first network device determines, according to the state indication information, a neighboring cell that is in an active state under the second network device.
  • the foregoing method further includes: the first network device determines, according to the acquired information of the neighboring cell, that the second network device is to be shut down. or the first network device determines, according to the first message, that the target cell for handover is the first cell under the second network device.
  • the first network device determines the target cell to be shut down under the second network device according to the acquired information of the neighboring cell, which may be implemented by referring to the following manner: the first network device determines the target cell according to the information of the neighboring cell contained in the first message or through the core network
  • the information of the neighboring cells under the second access network device obtained by the device and/or the information of the serving cell of the terminal device determines the cell to be shut down.
  • a neighbor cell with more beams, a neighbor cell with a larger bandwidth, or a neighbor cell with less load that other cells can share the load may be preferentially determined as the target cell to be shut down, that is, the first cell.
  • the first network device determines, according to the first message, that the target cell to be handed over by the second network device is the first cell under the second network device.
  • the cell with low load under the network device is determined as the target cell for handover, that is, the first cell.
  • the aforementioned method further includes:
  • the second network device sends the first indication information to the first network device through the core network device, and the first network device receives the first indication information from the second network device through the core network device.
  • the second network device sends the first indication information to the core network device, and the core network device then sends the received first indication information to the first network device.
  • the first indication information is used as a response to the first request information. If the first request information is used to request activation of the first cell, the second network device sends the first indication information after activating the first cell, and the first indication information is used for to instruct the activation of the first cell; if the first request information is used to request activation of the first cell and handover to the first cell, the second network device activates the first cell, and determines whether to accept the cell handover and then sends the first indication information, The first indication information is used to indicate acceptance or rejection of the handover request corresponding to the first cell; if the first cell is in the active state, the first request information is used to request handover to the first cell, and the second network device determines Whether to send the first indication information after accepting the cell handover, the first indication information is used to instruct to accept or reject the handover request corresponding to the first cell; if the first cell is in the active state, the first request information is used to request the shutdown In the first cell, the second network device sends first indication information after determining whether to
  • Fig. 3a illustrates S305: the first indication information sent by the second network device.
  • Figure 3b illustrates that the first request information sent by the first network device in S304 is specifically an activation request corresponding to the first cell; correspondingly, the second network device activates the first cell after receiving the first request information, and in S305
  • the first indication information sent by the second network device is specifically an activation indication corresponding to the first cell.
  • an embodiment of the present application provides another cell management method, and the method includes the following procedures.
  • the first network device sends a second message to the terminal device, where the second message is used to instruct the terminal device to acquire information of neighboring cells.
  • the terminal device acquires information of neighboring cells according to the second message, where the neighboring cells include the first cell under the second network device.
  • the terminal device sends a first message to the first network device, where the first message includes the acquired information of the neighboring cells; correspondingly, the first network device stores the information of the neighboring cells.
  • the first network device sends a third message carrying first request information to the core network device, where the first request information is used to request activation of the first cell and handover to the first cell.
  • the core network device sends a fourth message to the second network device, where the fourth message carries the first request information.
  • the second network device sends a fifth message carrying first indication information to the core network device, where the first indication information is used to indicate acceptance or rejection of the handover request corresponding to the first cell.
  • the core network device sends a sixth message to the first network device, where the sixth message carries the first indication information.
  • the first network device sends an activation request and a handover request corresponding to the first cell to the second network device through the core network device, so as to avoid errors in directly requesting handover when the first cell is in a deactivated state.
  • the embodiment of the present application provides another cell management method by taking the handover (HO) process based on the Ng interface as an example, as shown in FIG. 5 .
  • the flow of the device (AMF1) initiating handover to the destination base station (T-gNB2) specifically includes the following steps.
  • the S-gNB1 receives a measurement report (measurement report) reported by the UE under the S-gNB1, where the measurement report includes information of neighboring cells of the serving cell of the UE.
  • the S-gNB1 sends a handover request (HO REQUIRED) message to the AMF1, where the handover request message is used to indicate the target cell of the UE handover in the neighboring cell.
  • the handover request message also carries an activation request of the target cell.
  • the handover request message may implicitly indicate an activation request for the target cell, such as pre-negotiation between the network device and the core network device.
  • AMF1 sends a handover request (HO REQUEST) message to T-gNB2, where the handover request is used to request the target cell of the UE handover in neighboring cells.
  • the handover request also carries an activation request of the target cell.
  • the handover request message may implicitly indicate an activation request for the target cell. For example, it can be negotiated in advance between the network equipment and the core network equipment. When the target cell corresponding to the received handover request message is in a deactivated state, an activation request corresponding to the target cell is implied.
  • T-gNB2 receives the HO REQUEST and determines whether to accept the handover request corresponding to the target cell. If yes, follow steps S504a, S505a and S506:
  • T-gNB2 accepts HO REQUEST (that is, HO success), and T-gNB2 sends a handover request acknowledgment (HO REQUEST ACK) message to AMF1.
  • HO REQUEST handover request acknowledgment
  • the T-gNB2 accepts the HO REQUEST, and can also implicitly indicate that the target cell has been activated, or implicitly indicate that it accepts the activation request for the target cell.
  • AMF1 sends a handover command (HO COMMAND) message to S-gNB1.
  • HO COMMAND handover command
  • S-gNB1 sends a connection reconfiguration (RRC connection reconfiguration/RRC reconfiguration) message to the UE, so that the UE establishes a connection to the handover target cell.
  • RRC connection reconfiguration/RRC reconfiguration RRC connection reconfiguration/RRC reconfiguration
  • T-gNB2 rejects HO REQUEST (that is, HO failure), and T-gNB2 sends a handover failure (HANDOVER FAILURE) message to AMF1.
  • the T-gNB2 may also carry information used to indicate whether the target cell is activated or not in a handover failure (HANDOVER FAILURE) message.
  • HANDOVER FAILURE handover failure
  • AMF1 sends a HANDOVER PREARATION FAILURE message to S-gNB1.
  • AMF1 may also send information for indicating whether the target cell is activated to S-gNB1.
  • an embodiment of the present application provides a communication apparatus 600 .
  • the communication apparatus 600 may be applied to a first network device.
  • the specific communication apparatus 600 may be a first network device, or may be applied to a first network device.
  • a network device capable of supporting an apparatus for the first network device to execute the above cell management method.
  • the communication apparatus 600 includes: a communication module 601 for receiving a first message from a terminal device, where the first message includes information of neighboring cells, and the neighboring cells include a first cell under the second network device; a processing module 602 for receiving according to The first message determines the first request information, and the first request information is used to request the management of the first cell; the communication module 601 is further configured to send the first request information to the second network device through the core network device.
  • the method of reporting neighboring cell information by the terminal device does not require the exchange of cell information between network devices, and can be adapted to the scenario of cell management under the network device without direct interface, such as the first network device and the second network device. There is no direct interface between devices, and the first network device can manage the cell under the second network device through the core network device, which can improve the effect of cell management.
  • the information of the neighboring cell includes any one or more of the following information: the identification of the neighboring cell, the bandwidth, the load, the number of beams, the maximum transmit power or the period of the reference signal.
  • the first request information is used to request activation of the first cell.
  • the first request information includes activation information
  • the activation information indicates one or more of the following information: activation reason, load information of the first network device, load information of the serving cell of the terminal device, or target load information of the first cell .
  • the processing module 602 is further configured to: determine that the target cell handed over by the terminal device is the first cell; and determine that the first cell is in a deactivated state.
  • the first network device determines that the terminal device needs to perform handover to the first cell under the second network device, it first determines that the first cell is in a deactivated state and sends the first request information to request activation of the first cell, which can avoid direct handover. The resulting handover fails, thereby improving the effect of cell management.
  • the communication module 601 is further configured to send state request information to the second network device through the core network device, where the state request information is used to request a cell in the deactivated state under the second network device;
  • the core network device receives state indication information from the second network device, where the state indication information is used to indicate a cell in a deactivated state under the second network device;
  • the processing module is further configured to include the first cell in the cell indicated by the state indication information In the case of a cell, it is determined that the first cell is in a deactivated state.
  • the first request information is further used to request handover to the first cell.
  • the communication module 601 is further configured to: send second request information to the second network device through the core network device, where the second request information is used to request handover to the first cell; receive information from the second network device through the core network device The information used to indicate that the first cell is in a deactivated state.
  • the first request information is used to request handover to the first cell or the first request information is used to request to shut down the first cell, and the first cell is in an active state.
  • the communication module 601 is further configured to send a second message to the terminal device, where the second message is used to instruct the terminal device to acquire information of neighboring cells.
  • the communication device 700 may be a chip or a system of chips.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • the communication apparatus 700 may include at least one processor 710, and the communication apparatus 700 may further include at least one memory 720 for storing computer programs, program instructions and/or data. Memory 720 is coupled to processor 710 .
  • the coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units or modules, which may be in electrical, mechanical or other forms, and is used for information exchange between devices, units or modules.
  • Processor 710 may cooperate with memory 720 .
  • the memory 720 stores necessary computer programs, program instructions and/or data for implementing any of the above embodiments; the processor 710 may execute the computer programs stored in the memory 720 to complete the methods in any of the above embodiments.
  • at least one of the at least one memory 720 may be included in the processor 710 .
  • the communication apparatus 700 may further include a transceiver 730, and the communication apparatus 700 may exchange information with other devices, such as the aforementioned core network equipment or terminal equipment, through the transceiver 730.
  • the transceiver 730 can be a circuit, a bus, a transceiver, or any other device that can be used for information exchange.
  • the communication apparatus 700 may be applied to the first network device, and the specific communication apparatus 700 may be the first network device, or may be capable of supporting the first network device to implement any of the above-mentioned embodiments means of the functionality of the first network device.
  • the memory 720 holds the necessary computer programs, program instructions and/or data to implement the functions of the first network device in any of the above embodiments.
  • the processor 710 can execute the computer program stored in the memory 720 to complete the method executed by the first network device in any of the foregoing embodiments.
  • connection medium between the transceiver 730, the processor 710, and the memory 720 is not limited in the embodiments of the present application.
  • the memory 720, the processor 710, and the transceiver 730 are connected through a bus in FIG. 7.
  • the bus is represented by a thick line in FIG. 7.
  • the connection mode between other components is only for schematic illustration. It is not limited.
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of presentation, only one thick line is used in FIG. 7, but it does not mean that there is only one bus or one type of bus.
  • the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, which may implement or The methods, steps and logic block diagrams disclosed in the embodiments of this application are executed.
  • a general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the methods disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware processor, or executed by a combination of hardware and software modules in the processor.
  • the memory may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), etc., or may also be a volatile memory (volatile memory), for example Random-access memory (RAM).
  • the memory may also be, but is not limited to, any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and that can be accessed by a computer.
  • the memory in this embodiment of the present application may also be a circuit or any other device capable of implementing a storage function, for storing computer programs, program instructions and/or data.
  • an embodiment of the present application further provides another communication apparatus 800, including: an interface circuit 810 and a processor 820; the interface circuit 810 is configured to receive code instructions and transmit them to the processor; A controller 820 is configured to execute the code instructions to execute the method executed by the communication apparatus in any of the foregoing embodiments.
  • the embodiments of the present application further provide a computer-readable storage medium, where the computer-readable storage medium stores instructions, when the instructions are executed, the method executed by the communication device in any of the above embodiments is executed.
  • the computer-readable storage medium may include: a USB flash drive, a removable hard disk, a read-only memory, a random access memory, a magnetic disk or an optical disk, and other media that can store program codes.
  • an embodiment of the present application further provides a chip, including a processor, for supporting the communication apparatus to realize the functions involved in the terminal or the network device in the foregoing method embodiment.
  • the chip is connected to a memory or the chip includes a memory for storing necessary program instructions and data of the communication device.
  • the embodiments of the present application provide a computer program product containing instructions, which, when executed on a computer, cause the computer to execute the above method embodiments.
  • the embodiments of the present application may be provided as a method, a system, or a computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
  • computer-usable storage media including, but not limited to, disk storage, CD-ROM, optical storage, etc.
  • These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions
  • An apparatus implements the functions specified in a flow or flow of the flowcharts and/or a block or blocks of the block diagrams.

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

La présente demande se rapporte au domaine technique des communications. Elle concerne un procédé de gestion de cellule et un appareil de communication. Le procédé comprend les étapes suivantes : un premier dispositif réseau reçoit un premier message d'un dispositif terminal, le premier message comprenant des informations d'une cellule voisine, et la cellule voisine comprenant une première cellule sous un second dispositif réseau ; et le premier dispositif réseau envoie, en fonction du premier message, des premières informations de demande au second dispositif réseau au moyen d'un dispositif réseau central, les premières informations de demande servant à demander la gestion de la première cellule. L'effet de la gestion de cellule peut donc être amélioré.
PCT/CN2021/102301 2020-06-30 2021-06-25 Procédé de gestion de cellule et appareil de communication WO2022001857A1 (fr)

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WO2024055298A1 (fr) * 2022-09-16 2024-03-21 Apple Inc. Technologies de sélection et de resélection de cellule dans des réseaux d'économie d'énergie de réseau

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WO2024055298A1 (fr) * 2022-09-16 2024-03-21 Apple Inc. Technologies de sélection et de resélection de cellule dans des réseaux d'économie d'énergie de réseau

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