WO2023246708A1 - 测量配置方法及通信装置 - Google Patents

测量配置方法及通信装置 Download PDF

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Publication number
WO2023246708A1
WO2023246708A1 PCT/CN2023/101116 CN2023101116W WO2023246708A1 WO 2023246708 A1 WO2023246708 A1 WO 2023246708A1 CN 2023101116 W CN2023101116 W CN 2023101116W WO 2023246708 A1 WO2023246708 A1 WO 2023246708A1
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WIPO (PCT)
Prior art keywords
candidate
configuration
node
measurement gap
measurement
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PCT/CN2023/101116
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English (en)
French (fr)
Inventor
王凡凡
胡星星
耿婷婷
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华为技术有限公司
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Publication of WO2023246708A1 publication Critical patent/WO2023246708A1/zh

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Classifications

    • 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
    • H04W36/0085—Hand-off measurements
    • 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
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data

Definitions

  • the present application relates to the field of cell handover technology, and in particular, to a measurement configuration method and a communication device.
  • One terminal device can access two or more nodes at the same time.
  • a terminal device is connected to a master node (MN) and a secondary node (SN) at the same time, which can be called dual-connectivity (DC).
  • a terminal device that simultaneously accesses the MN and at least two SNs can be called multi-connectivity (MC).
  • DC or MC the MN has a control plane signaling connection with the core network.
  • the MN provides a master cell group (MCG) for terminal equipment, and the MCG contains a primary cell (PCell).
  • SN provides a secondary cell group (SCG) for terminal equipment, and the SCG contains a primary secondary cell (PSCell).
  • the terminal device When the terminal device switches cells, it needs to measure the frequency to be measured according to the measurement configuration to determine whether the handover execution triggering conditions are met.
  • the terminal equipment When the terminal equipment is configured with conditional handover (CHO) and conditional PSCell addition and change (CPAC), the terminal equipment needs to determine whether there are candidate MNs that meet the execution trigger conditions of CHO , and whether the candidate SN under the candidate MN satisfies the execution triggering conditions of CPAC.
  • MN only considers the measurement configuration requirements of CHO and does not consider the measurement configuration requirements of CPAC.
  • the terminal equipment may only measure part of the SN frequency points of CPAC to be measured or may not measure the SN frequency points of CPAC to be measured. This will cause Reduce the chance of CPAC triggering.
  • This application provides a measurement configuration method and communication device, which increases the triggering opportunities of CPAC when the terminal equipment is configured with CHO and CPAC, thereby completing CPAC more quickly.
  • the measurement configuration method includes: the source master node sends a CHO request to one or more candidate master nodes, receives a CHO request response sent by the first candidate master node, and sends a first radio resource control (RRC) to the terminal device. ) configuration message.
  • the first candidate master node belongs to the one or more candidate master nodes.
  • the CHO request response includes the CHO configuration, the first CPAC configuration, and the frequency point to be tested of the candidate secondary node.
  • the first RRC configuration message includes CHO configuration, second CPAC configuration and measurement configuration.
  • the second CPAC configuration is determined based on the first CPAC configuration.
  • the measurement configuration includes a measurement object and a first measurement gap (gap) configuration corresponding to the measurement object.
  • the measurement objects include the frequency point to be measured of the source master node, the frequency point to be measured of the first candidate master node, the frequency point to be measured of the secondary master node, and the frequency point to be measured of the candidate secondary node.
  • the first candidate master node is the candidate master node that receives the CHO request from the source master node.
  • the first candidate master node can initiate a conditional primary and secondary cell addition (CPA) request or a conditional primary and secondary cell change (CPC) request to the candidate secondary node to obtain The frequency point to be measured of the candidate auxiliary node.
  • CPA conditional primary and secondary cell addition
  • CPC conditional primary and secondary cell change
  • the first candidate master node can feed back the obtained frequency point to be measured of the candidate secondary node to the source master node, so that subsequent source master nodes can use the frequency point to be measured of the source master node, the frequency point to be measured of the candidate master node, and the secondary master node.
  • the frequency point to be measured of the node and the frequency point to be measured of the candidate secondary node are configured with appropriate measurement objects and measurement gaps (gaps).
  • the terminal device evaluates whether the trigger condition of CHO is met, in addition to measuring the frequency point to be measured of the candidate master node, it can also measure the frequency point to be measured of the candidate secondary node, that is, it can also evaluate whether the trigger condition of CPAC is met. This increases the chance of CPAC triggering and helps terminal devices complete CPAC more quickly. Moreover, it is helpful for the terminal equipment to access a more suitable cell, thereby improving the communication quality after the terminal equipment accesses the cell.
  • the method further includes: the source master node determines the first measurement gap configuration according to the measurement object, and sends the configuration to the source slave node.
  • the node sends a first measurement gap configuration and a measurement gap type, where the measurement gap type includes a measurement type configured for the terminal device or a measurement gap type configured for the frequency range.
  • Measurement gap is the duration from when the terminal device stops communicating with the serving cell to when the neighboring cell frequency is measured. Within the measurement gap, the terminal device will not send and receive data, but will adjust the receiver to the frequency point to be measured and measure the frequency point. After measuring the gap, the terminal device adjusts the receiver to the frequency of the serving cell.
  • the source master node can configure the measurement according to the measurement object, such as the frequency point to be measured of the source master node, the frequency point to be measured of the candidate master node, the frequency point to be measured of the secondary master node, and the frequency point to be measured of the candidate secondary node. gap. That is, the source master node configures the measurement gap according to multiple frequency points to be measured to avoid that the configured measurement gap is insufficient to measure some frequency points to be measured, resulting in part of the frequency points to be measured not being measured.
  • the source master node may also provide the source slave node with the first measurement gap configuration and measurement gap type to assist the source slave node in determining whether to configure a gap for the terminal device and what kind of gap to configure based on the first measurement gap configuration and measurement gap type.
  • the source master node can configure a more appropriate gap for the terminal device based on the second measurement gap. For example, if the first measurement gap is greater than the second measurement gap, the source master node can configure the first measurement gap for the terminal device; conversely, if the second measurement gap is greater than the first measurement gap, then the source master node can configure the second measurement gap for the terminal device. gap, so that more frequency points to be measured can be measured to avoid missing the measurement of frequency points to be measured with better communication quality.
  • the CHO request response also includes a third measurement gap configuration, and the third measurement gap configuration is configured according to a frequency point located within FR2 among the frequency points to be measured of the candidate secondary node. If the first candidate master node obtains the third measurement gap configuration, it can be provided to the source master node, so that the source master node provides the third measurement gap configuration to the source slave node to assist the source slave node in configuring the FR2 measurement gap to the terminal device. .
  • the method further includes: the source primary node sending measurement frequency point information to the source secondary node, where the measurement frequency point information indicates a frequency point located within FR2 among the frequency points to be measured of the candidate secondary node.
  • the source slave node can configure the measurement gap of FR2 to the terminal device based on the frequency point to be measured located in FR2, so as to apply to the measurement gap of more scenarios. configuration.
  • the source master node is responsible for the gap configuration located in FR1
  • the slave node can be responsible for the gap configuration located in FR2, so that the source master node and the source slave node can negotiate to complete the gap configuration to achieve EN-DC scenarios and NGEN-DC. Configuration of the measurement gap in the scene.
  • the method further includes: the source master node determines a fourth measurement gap configuration based on a frequency point to be measured of the candidate secondary node, where the frequency point to be measured of the candidate secondary node is a frequency point located within FR1.
  • the CHO request response includes the identification and/or data forwarding address of the candidate secondary node. That is, the first candidate primary node may provide the identity and/or data forwarding address of the candidate secondary node to the source primary node.
  • the source primary node provides the source secondary node with the identity of the candidate secondary node and/or the data forwarding address. Therefore, the source secondary node forwards data to the candidate secondary node according to the candidate secondary node's identification and/or data forwarding address, thereby realizing direct data forwarding under CPAC.
  • the first RRC configuration message includes a second RRC configuration message and a first execution trigger condition corresponding to the first candidate master node.
  • the second RRC configuration message includes the wireless air interface configuration of the first candidate master node and the second execution trigger condition corresponding to the candidate PSCell, and the information elements in the first RRC configuration message except the second RRC configuration message also include the candidate The identification information of the PSCell and the second execution trigger condition corresponding to the candidate PSCell.
  • the candidate PSCell is managed by the candidate secondary node.
  • the first execution trigger condition is the execution trigger condition of CHO, that is, the trigger condition that needs to be met for the terminal device to switch to the PCell managed by the first candidate master node.
  • embodiments of the present application provide a measurement configuration method, which can be executed by a second communication device.
  • the second communication device can be a communication device or a communication device that can support the communication device to implement the functions required by the method, such as a chip. system.
  • the following description takes the communication device as a candidate master node as an example.
  • the second communication device is a candidate master node, or a chip provided in the candidate master node, or other components used to implement the functions of the candidate master node.
  • the measurement configuration method includes: the candidate master node receives the CHO request sent by the source master node, and sends a CHO request response to the source master node.
  • the CHO request response includes the CHO configuration, the first CPAC configuration, and the frequency point to be tested of the candidate secondary node.
  • embodiments of the present application provide a communication device, which has the function of realizing the behavior in the method embodiment of any one of the above first to second aspects.
  • the beneficial effects can be found in the first to second aspects. The description of the two aspects will not be repeated here.
  • the transceiver unit is also understood as a collective name for the sending unit and the receiving unit, and the sending unit and the receiving unit may be different functional modules.
  • These units can perform the corresponding functions in the above-mentioned method examples of the first aspect. For details, please refer to the detailed description in the method examples, which will not be described again here.
  • the communication device may be an access network device for performing the method performed by the candidate master node in the second aspect, or the communication device may be a device capable of implementing the method provided in the second aspect, such as a chip or a chip system.
  • the communication device includes corresponding means or modules for performing the method of the second aspect.
  • the communication device includes a processing unit (sometimes also called a processing module or processor) and/or a transceiver unit (sometimes also called a transceiver module or transceiver).
  • the transceiver unit may include a sending unit and a receiving unit. It can also be understood that the sending unit and the receiving unit are the same functional module. Alternatively, the transceiver unit is also understood as sending The collective name of the unit and the receiving unit.
  • the sending unit and the receiving unit can be different functional modules. These units (modules) can perform the corresponding functions in the above method examples of the second aspect. For details, please refer to the detailed description in the method examples, which will not be described again here.
  • inventions of the present application provide a communication device that can perform the method described in any one of the first to second aspects.
  • the communication device includes a communication interface and a processor, and optionally, a memory.
  • the memory is used to store computer programs
  • the processor is coupled to the memory and the communication interface.
  • the communication device executes the steps performed by the source master node or the candidate master node in the above method. method.
  • embodiments of the present application provide a communication device, which includes an input-output interface and a logic circuit. Input and output interfaces are used to input and/or output information.
  • the logic circuit is used to perform the method described in any one of the first to second aspects.
  • the present application provides a computer-readable storage medium that stores a computer program.
  • the computer program When the computer program is run, the method of any one of the above-mentioned first to second aspects is implemented. .
  • Figure 1 is a schematic diagram of a communication system applicable to the embodiment of the present application.
  • Figure 2 is a schematic flow chart of the measurement configuration method provided by the embodiment of the present application.
  • Figure 3 is a schematic flowchart of the first example of the measurement configuration method provided by the embodiment of the present application.
  • Figure 4 is a schematic flowchart of a second example of the measurement configuration method provided by the embodiment of the present application.
  • Figure 5 is a schematic flowchart of a third example of a measurement configuration method provided by an embodiment of the present application.
  • Figure 6 is a schematic flowchart of a fourth example of a measurement configuration method provided by an embodiment of the present application.
  • Figure 7 is a schematic block diagram of a communication device provided by an embodiment of the present application.
  • Figure 8 is another schematic block diagram of a communication device provided by an embodiment of the present application.
  • the technical solutions provided by the embodiments of this application can be applied to new radio (NR) mobile communication systems, or to long term evolution (LTE) mobile communication systems, or can also be applied to other next-generation mobile communications systems.
  • Communication systems such as the sixth generation (6G) communication system, or other similar communication systems.
  • the technical solutions provided by the embodiments of this application can also be applied to Internet of things (IoT) systems, vehicle to everything (V2X) systems, etc.
  • IoT Internet of things
  • V2X vehicle to everything
  • one terminal device can communicate with multiple network devices.
  • one network device is the primary network device
  • the other network device is the auxiliary network device.
  • the main network device is a network device that interacts with the core network in control plane signaling.
  • the terminal device may establish a communication connection with some of the auxiliary network devices among the plurality of auxiliary network devices, or may establish a communication connection with all of the auxiliary network devices among the plurality of auxiliary network devices.
  • both the primary network device and the secondary network device have radio resource control (radio resources control, RRC) entities and can generate RRC messages (for example, cell measurement messages, etc.).
  • RRC radio resource control
  • the secondary network device can directly send the RRC message generated by the secondary network device to the terminal device.
  • the terminal device can also directly send the generated RRC message to the secondary network device.
  • the secondary network device can also send the generated RRC message to the primary network device, and the primary network device then sends it to the terminal device.
  • the terminal device sends the RRC message to the secondary network device to the primary network device, and the primary network device then Forward the RRC message to the secondary network device.
  • DC refers to a terminal device that is connected to two network devices at the same time.
  • One of the two network devices is the primary network device and the other network device is the secondary network device.
  • MC refers to a terminal device that is connected to at least three network devices at the same time. At least one of the three network devices is the primary network device, and the remaining network devices are auxiliary network devices.
  • Figure 1 is an architecture diagram of a DC scenario applicable to the embodiment of this application.
  • Figure 1 takes a terminal device and two network devices (ie, a first network device and a second network device) as an example.
  • the first network device is the primary network device, which is the MN
  • the second network device is the secondary network device, which is the SN.
  • the first network device and the second network device may be network devices belonging to the same radio access technology (RAT).
  • RAT radio access technology
  • the first network device and the second network device are both LTE base stations or NR base stations.
  • the first network device and the second network device may also be network devices belonging to different RATs.
  • the first network device is an LTE base station and the second network device is an NR base station.
  • the LTE system can be an evolved universal terrestrial radio access (E-UTRA) system
  • EN-DC is the dual connection of the 4G wireless access network and 5G NR connected to the 4G core network.
  • MN is the LTE base station connected to the packet core network (evolved packet core, EPC)
  • SN is the NR base station.
  • the terminal equipment supports new air interface and evolved universal terrestrial wireless access dual connectivity (NR E-UTRA dual connectivity, NE-DC).
  • the MN is connected to the 5G core network (5G core , 5GC) NR base station
  • SN is the LTE base station.
  • MR-DC Multi-RAT dual connectivity
  • EN-DC next generation-RAN E-UTRA dual connectivity
  • NGEN-DC next generation-RAN E-UTRA dual connectivity
  • Dual connectivity of the 4G wireless access network connected to the 5G core network and 5G NR In addition, in another DC scenario, for a terminal device that only supports NR, the terminal device can access two different NR network devices at the same time. This type of connection method is called NR-DC.
  • MN is the NR base station connected to 5GC
  • SN is another NR base station.
  • Figure 1 when an NR system and an LTE system are deployed at the same time, the first network device is an LTE base station and the second network device is an NR base station. It should be noted that Figure 1 takes the DC network architecture as an example.
  • the number of terminal devices in Figure 1 is only an example and can be more or less.
  • the number of network devices is just an example and can be more or less.
  • the communication system described in Figure 1 may also include more types of equipment, such as one or more core network equipment, for example, LTE core network equipment, NR core network equipment.
  • LTE core network equipment can communicate with LTE network equipment.
  • NR core network equipment can communicate with NR network equipment and/or LTE network equipment.
  • the main node connected to the terminal device (that is, the node that provides services for the terminal device) is called the source main node (source MN, S-MN).
  • source MN source main node
  • S-MN candidate master nodes
  • C-MN candidate master nodes
  • C-SN candidate master nodes
  • C-SN candidate secondary nodes
  • C-SN candidate secondary nodes
  • C-SN candidate secondary nodes
  • C-SN candidate secondary nodes
  • Source-auxiliary node “source-auxiliary base station” and “source-auxiliary network device” are the same concept and can be replaced unless otherwise specified.
  • Candidate master node “candidate master base station” and “candidate master network device” are the same concept and can be replaced unless otherwise specified.
  • Candidate secondary node “candidate secondary base station” and “candidate secondary network device” are the same concept and can be replaced unless otherwise specified.
  • MCG One or more cells (cells) provided by the MN for terminal equipment are called MCG.
  • MCG When there is only one cell in the MCG, the cell is the PCell of the terminal device.
  • MN can provide one or more MCGs.
  • SCGs One or more cells served by an SN for terminal equipment are called SCGs.
  • SCGs When there is only one cell in the SCG, the cell is the PSCell of the terminal device.
  • One SN can provide one or more SCGs.
  • SpCell special cells
  • SCell and SpCell in each cell group perform carrier aggregation to jointly provide services for terminal equipment.
  • PCell refers to a cell working on the main frequency point (or main carrier).
  • the terminal device initiates an initial connection establishment process or a connection reestablishment process on the PCell.
  • the PCell is indicated as the primary cell.
  • PSCell also known as primary SCG cell, is a cell belonging to SCG.
  • PSCell may include cells where terminal equipment is instructed to perform random access or initial physical uplink shared channel (PUSCH) transmission. For example, the cell during the random access process is omitted when performing the SCG change process.
  • PSCell also includes cells where the terminal device initiates a random access process in the secondary network device, or a cell where the terminal device skips the random access process and initiates data transmission during the change of the secondary network device, or initiates a synchronous reconfiguration process. The cell of the secondary network device that is randomly accessed.
  • SCell refers to a cell operating on a secondary carrier. Once the RRC connection is established, SCell may be Configure to provide additional wireless resources. In the DC architecture, cells in the MCG and SCG, except the main cell, can be called SCells.
  • a serving cell can refer to a primary cell or a secondary cell.
  • the primary cell of a terminal device and all secondary cells form the serving cell set of the terminal device.
  • RRC_CONNECTED For terminal equipment in the RRC connected state (RRC_CONNECTED), if carrier aggregation (CA) and/or DC are not configured, there is only one serving cell, that is, PCell; if CA and/or DC are configured, the serving cell
  • the set is composed of a primary cell and a secondary cell.
  • Each carrier (component carrier, CC) corresponds to an independent cell.
  • the network device may be an access device through which the terminal device wirelessly accesses the mobile communication system, such as an access network (AN) device such as a base station.
  • AN access network
  • Network equipment may also refer to equipment that communicates with terminal equipment over the air interface.
  • Network equipment may include evolved base stations (evolved Node B, eNB or e-NodeB) in LTE systems or advanced long-term evolution (long term evolution-advanced, LTE-A); network equipment may also include next-generation nodes in NR systems B (next generation node B, gNB); alternatively, network equipment may also include access nodes in wireless-fidelity (Wi-Fi) systems; alternatively, network equipment may be stations, relay stations, Vehicle-mounted equipment and future evolved Public Land Mobile Network (PLMN) equipment, equipment in device to device (D2D) networks, equipment in machine to machine (machine to machine, M2M) networks, Equipment in the IoT network, drone equipment, etc.
  • the access network equipment in the V2X system can be a road side unit (RSU).
  • RSU road side unit
  • the base station in the embodiment of the present application may include a centralized unit (CU) and a distributed unit (DU), and multiple DUs may be centrally controlled by one CU.
  • CU and DU can be divided according to the protocol layer functions of the wireless network they possess. For example, the functions of the packet data convergence protocol (PDCP) layer and above are set in CU and the protocol layer below PDCP, such as wireless link. Functions such as the radio link control (RLC) layer and the medium access control (medium access control, MAC) layer are set in the DU. It should be noted that this division of protocol layers is just an example, and division can also be performed on other protocol layers.
  • PDCP packet data convergence protocol
  • RLC radio link control
  • MAC medium access control
  • the radio frequency device can be remote and not placed in the DU, or it can be integrated in the DU, or partially remote and partially integrated in the DU.
  • the embodiments of this application do not impose any restrictions.
  • the control plane (CP) and user plane (UP) of the CU can also be separated and implemented into different entities, respectively control plane CU entities (CU-CP entities). and user plane CU entities (CU-UP entities).
  • the CU control plane CU-CP also includes a further segmentation architecture, that is, the existing CU-CP is further segmented into CU-CP1 and CU-CP2.
  • CU-CP1 includes various radio resource management functions
  • CU-CP2 only includes RRC functions and PDCP-C functions (ie, the basic functions of control plane signaling at the PDCP layer).
  • the signaling generated by the CU can be sent to the terminal device through the DU, or the signaling generated by the terminal device can be sent to the CU through the DU.
  • the DU may directly encapsulate the signaling through the protocol layer and transparently transmit it to the terminal device or CU without parsing the signaling.
  • the terminal device is a device with a wireless transceiver function that can send signals to or receive signals from the network device.
  • Terminal equipment may include user equipment (UE), sometimes also called terminal, access station, UE station, remote station, wireless communication equipment, or user device, etc.
  • UE user equipment
  • the terminal equipment is used to connect people, things, machines, etc., and can be widely used in various scenarios, including but not limited to the following scenarios: cellular communication, D2D, V2X, machine-to-machine communication (machine-to-machine communication), etc.
  • the terminal device may be a mobile phone, a tablet, a computer with wireless transceiver functions, a VR terminal, or an AR terminal, etc.
  • the terminal device may also be a wearable device.
  • the various terminal devices introduced above can be considered as vehicle-mounted terminal devices if they are located on the vehicle (for example, placed or installed in the vehicle).
  • Vehicle-mounted terminal equipment is also called on-board unit (OBU).
  • the terminal device of this application may also be a vehicle-mounted module, vehicle-mounted module, vehicle-mounted component, vehicle-mounted chip, or vehicle-mounted unit built into the vehicle as one or more components or units.
  • the vehicle can implement the method of this application through the built-in terminal device.
  • the communication device used to realize the function of the network device or the terminal device may be the network device or the terminal device itself, or it may be a device that can support the network device or the terminal device to realize the function, such as a chip system.
  • the device may be Be installed in network equipment or terminal equipment.
  • the number of nouns means “singular noun or plural noun", that is, “one or more”, unless otherwise specified.
  • At least one means one or more
  • plural means two or more.
  • “And/or” describes the relationship between associated objects, indicating There can be three relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, and B exists alone, where A and B can be singular or plural.
  • the character "/" generally indicates that the related objects are in an "or” relationship.
  • A/B means: A or B.
  • At least one of the following or similar expressions thereof refers to any combination of these items, including any combination of a single item (items) or a plurality of items (items).
  • at least one of a, b, or c means: a, b, c, a and b, a and c, b and c, or a and b and c, where a, b, c Can be single or multiple.
  • first and second mentioned in the embodiment of this application are used to distinguish multiple objects and are not used to limit the size, content, order, timing, application scenarios, priority or importance of multiple objects. Degree etc.
  • the first measurement gap configuration and the second measurement gap configuration can be the same measurement gap configuration, or they can be different measurement gaps.
  • this name does not indicate the length, priority, or length of the two measurement gaps. Different application scenarios or importance.
  • the embodiments of this application mainly relate to technologies related to cell switching and cell measurement configuration in DC scenarios.
  • relevant content about cell handover and cell measurement configuration is introduced below.
  • CHO condition-based cell switching mechanism.
  • the source base station to which the source cell belongs sends CHO configuration information of at least one candidate cell to the UE.
  • the CHO configuration information includes candidate cell information and CHO execution trigger conditions.
  • the execution trigger condition of CHO can be understood as the trigger condition for UE to perform cell handover, which is also called CHO trigger condition, CHO execution condition, execution condition or trigger condition.
  • Each candidate cell is configured with one or more CHO execution trigger conditions.
  • the information of the candidate cell can be used to indicate the candidate cell, for example, including the candidate cell global cell identifier (CGI), or the candidate cell's physical cell identifier (PCI) and the frequency information corresponding to the candidate cell.
  • CGI candidate cell global cell identifier
  • PCI physical cell identifier
  • the UE receives the CHO configuration information and measures the candidate cell indicated by the CHO configuration information. When the signal quality of a candidate cell meets the execution trigger condition, the candidate cell is determined as the target cell.
  • the target cell is the cell to which the UE is to be handed over. Afterwards, the UE initiates access to the target cell.
  • PSCell addition and change including PSCell addition triggered by MN, and PSCell change triggered by MN or SN.
  • the change of PSCell refers to the switching of the PSCell accessed by the UE due to the mobility of the UE.
  • the MN (or SN) determines that the signal quality of one PSCell becomes worse and the signal quality of another PSCell becomes better based on the UE's measurement results, and the MN (or SN) notifies the UE to change the PSCell.
  • the PSCell change can be a handover from a cell of one SN to a cell of another SN, or a handover from a cell of one SN to another cell of the SN.
  • CPAC refers to the combination of CHO technology and PAC technology, that is, CHO technology is used to add/change PSCell. Similar to CHO, in CPAC, the triggering node (MN or SN) will also send the CPAC configuration to the UE.
  • the CPAC configuration includes the execution trigger conditions for cell handover, information about candidate PSCells, and configuration information for cell measurement. The UE receives the CPAC configuration. If it finds that a candidate cell meets the execution trigger condition, that is, CPAC is triggered, then the candidate cell is used as the target cell to perform the add/change process of PSCell.
  • the network device sends the measurement configuration to the UE, and the UE measures the candidate cell according to the measurement configuration.
  • the UE triggers the reporting of measurement events, that is, reporting the measurement results to the network device.
  • the network device may send a handover command to the UE to instruct the UE to handover from one cell to another cell. If the network device is configured with CHO, and the UE performs the cell handover process when the measurement results meet certain trigger conditions. If the network device is configured with CPAC, and the UE performs the PSCell handover process when the measurement results meet certain trigger conditions.
  • Measurement configurations may include one or more of the following configurations: measurement objects, measurement gaps, reporting configurations, triggering quantities, or measurement IDs (measurement identities), etc.
  • the measurement object is the object that the UE performs measurements on, including synchronization signal and physical broadcast channel block (synchronization signal and PBCH block, SSB), SSB subcarrier spacing, SSB-based measurement timing configuration (SSB-based measurement timing configuration, SMTC), Whitelist community or blacklist community, etc.
  • synchronization signal and physical broadcast channel block synchronization signal and PBCH block, SSB
  • SSB subcarrier spacing SSB-based measurement timing configuration
  • SMTC SSB-based measurement timing configuration
  • Whitelist community or blacklist community etc.
  • the measurement gap can be understood as the duration for which the UE adjusts the receiver from the current frequency point to the frequency point to be measured (such as a neighboring cell frequency point). Within the measurement gap, the UE will not send and receive data, but will adjust the receiver to the frequency point to be measured for measurement. After the measurement gap ends, the UE adjusts the receiver to the frequency of the serving cell. For example, for connected inter-frequency and/or inter-system neighbor cell measurements, the UE stops transmitting and receiving signals on the serving cell within the measurement gap, adjusts the receiver to an inter-frequency or inter-system frequency point, and receives and measures the inter-frequency or inter-system frequency. Signals from neighboring cells of different systems.
  • the network device can configure the measurement gap for the UE through RRC signaling.
  • Report configuration refers to the standard by which the UE is triggered to report a measurement report and the format of the measurement report.
  • Trigger volume is the strategy for triggering event reporting.
  • Measurement ID refers to a collection of measurement objects and report configurations.
  • FR1 includes FR supported by LTE systems and NR systems.
  • FR2 is a higher frequency than FR1 and can be considered as the FR supported by the NR system.
  • the lowest frequency in FR1 is greater than or equal to 450MHz, and the highest frequency in FR1 is less than or equal to 6GHz.
  • the lowest frequency in FR2 is greater than or equal to 24.25GHz, and the highest frequency in FR2 is less than or equal to 52.6GHz.
  • the configuration of measurement gaps also involves two types of measurement gaps. One type is configured for UE. This type of gap is also called per-UE gap; the other type is configured for FR. This type of gap Also called per-FR gap.
  • per-UE gap applies to FR1 and FR2.
  • per-FR gap refers to configuring two independent gap modes for FR1 and FR2 respectively, namely FR1gap and FR2gap.
  • per-UE gap or per-FR gap can be configured. If a per-UE gap is configured, the MN determines the gap mode and related gap sharing configuration. If per-FR gap is configured, the configuration of measuring the gap will be different depending on the connection scenario. Several connection scenarios are listed below and introduced in detail.
  • the MN determines the FR1gap mode and the related gap sharing configuration of FR1, while the SN determines the FR2gap mode and the related gap sharing configuration of FR2; in NE-DC and NR-DC, the MN determines the FR1 and FR2 gap mode and related gap sharing configuration.
  • the auxiliary information of the measurement gap configuration includes the SN frequency list configured in FR1 to be measured by the UE and the SN frequency list configured in FR2 of the UE to be measured from the SN.
  • the SN can indicate to the MN the SN frequency list configured in FR1 for the UE to be measured, and the MN indicates to the SN the MN frequency list configured in FR2 for the UE to be measured.
  • the auxiliary information of the measurement gap configuration includes the SN frequency list configured in FR1 to be measured by the UE from the SN.
  • the auxiliary information of the measurement gap configuration includes the SN frequency list configured in FR2 to be measured by the UE from the MN.
  • the MN will also indicate the configured per-UE measurement gap or FR1 measurement gap to the SN.
  • the SN can feedback gap confirmation to the MN. If the SN is configured with a per-FR measurement gap, the gap confirmation does not include any frequency list.
  • the MN may indicate the configured per-UE measurement gap, FR1 measurement gap or FR2 measurement gap and measurement gap type to the SN.
  • the SN may indicate to the MN the SN frequency list configured in FR1 to be measured by the UE and the SN frequency list configured in FR2 to be measured by the UE.
  • the network device is configured with CHO, which is for switching of PCell under the MN.
  • the measurement configuration used by the UE when performing CHO evaluation ie, evaluating whether the triggering conditions for CHO are met
  • the source MN ie, the base station that provides the current serving cell.
  • the measurement object includes the frequency point to be measured of the source MN and the frequency point to be measured of the candidate MN determined by the source MN.
  • the network device is configured with CHO and CPAC. CPAC is for the addition or change of PSCell under SN.
  • the source MN configures CHO for the UE, and for multiple candidate PCells, it can provide PSCell related configuration corresponding to each candidate PCell. If a candidate PCell triggers CHO handover, the UE attempts to access the candidate PCell, and the PSCell under the PCell also meets the CPAC triggering conditions. The UE also attempts to change the PSCell. For example, assuming there are two candidate primary cells (such as PCell 1 and PCell 2), the PSCell corresponding to PCell 1 includes PSCell 1, PSCell 2 and PSCell 3. PSCell corresponding to PCell 2 includes PSCell 4 and PSCell 5.
  • the network device is configured with both CHO and CPAC.
  • the UE needs to continuously determine whether there are candidate MNs that meet the execution triggering conditions of CHO, and whether there are candidate SNs determined by the candidate MNs that meet the execution triggering conditions of CPAC.
  • the MN only considers the measurement configuration requirements of CHO and does not consider the measurement configuration requirements of CPAC. That is, the measurement objects included in the measurement configuration sent by the MN to the UE do not consider the candidate SN. frequency point to be measured. In this way, the UE may only measure part of the frequency points of the candidate SN.
  • the candidate MN when the MN configures CHO and CPAC, can provide the source MN with the measurement frequency of the candidate SN, so that the source MN can configure a reasonable measurement object for the UE based on the measurement frequency of the candidate SN.
  • the measurement objects configured by the source MN include measurement frequency points of the candidate SN.
  • the source MN can also configure the measurement gap in combination with the frequency point to be measured of the candidate SN to minimize the impact on the UE measurement performance.
  • the embodiment of the present application provides a measurement configuration method, which can be applied in a DC or MC scenario, for example, applied to the DC scenario in Figure 1. Moreover, this method is applicable to the situation where the network device is configured with CHO and CPAC. It can be understood that if the UE switches a PCell, it may switch to another PCell provided by the S-MN, or it may also switch to a PCell provided by the C-MN. Similarly, if the UE switches the PSCell, it may switch to another PSCell provided by the S-SN or the PSCell provided by the C-SN.
  • the S-MN sends a CHO request to one or more C-MNs.
  • the one or more C-MNs receive the CHO request sent by the S-MN.
  • the S-MN can send CHO requests to each C-MN respectively.
  • the first C-MN sends a CPA request or a CPC request to one or more C-SNs.
  • the one or more C-SNs receive the CPA request or CPC request sent by the first C-MN.
  • the first C-MN determines that an S-SN exists, then the first C-MN sends a CPC request to one or more C-SNs; if the first C-MN determines that an S-SN does not exist, then the first C-MN The MN sends a CPA request to one or more C-SNs.
  • the first C-MN sends a CPA request to one or more C-SNs by default, that is, the first C-MN sends a CPA request to one or more C-SNs regardless of whether the S-SN exists.
  • the first C-MN is the C-MN that receives the CHO request. It should be understood that the first C-MN belongs to the one or more C-MNs. If one C-MN receives the CHO request, the first C-MN is the C-MN; if multiple C-MNs receive the CHO request, the first C-MN is one of the multiple C-MNs. or multiple C-MNs. After receiving the CHO request, the first C-MN may send a CPA request to the C-SN determined by the first C-MN. A C-MN can determine one or more C-SNs.
  • the first C-SN sends a CPA request response to the first C-MN.
  • the first C-MN receives the CPA request response sent by the first C-SN.
  • S203 may be replaced by: the first C-SN sends a CPC request response to the first C-MN, and accordingly, the first C-MN receives the CPC request response sent by the first C-SN.
  • the first C-MN sends a CPA request/CPC request to one or more C-SNs, and the first C-MN receives a CPA request response/CPC request response sent by the first C-SN.
  • the first C-SN is the C-SN that receives the CPA request/CPC request.
  • the first C-MN sends a CPC request/CPC request to one or more C-SNs, and the first C-MN receives a CPC request response/CPC request response sent by the first C-SN.
  • the first C-SN is the C-SN that receives the CPC request/CPC request.
  • the first C-MN Take the first C-MN sending a CPA request to one or more C-SNs as an example. If one C-SN receives the CPA request, then the first C-SN is the C-SN; if there are multiple C-SNs When the CPA request is received, the first C-SN is one or more C-SNs among multiple C-SNs. After receiving the CPA request, the first C-SN may send a CPA request response to the first C-MN.
  • the CPA request response includes frequency point information of the first C-SN, such as the frequency point to be measured of the first C-SN.
  • multiple C-SNs that receive the CPA request can respectively send CPA request responses to the first C-MN, and the CPA request response sent by any C-SN includes the frequency point to be measured of the C-SN.
  • the first C-MN sends a CPC request to one or more C-SNs. If one C-SN receives the CPC request, then the first C-SN is the C-SN; if there are multiple C-SNs When the CPC request is received, the first C-SN is one or more C-SNs among multiple C-SNs. After receiving the CPC request, the first C-SN may send a CPC request response to the first C-MN.
  • the CPC request response includes frequency point information of the first C-SN, such as the frequency point to be measured of the first C-SN. It should be understood that multiple C-SNs that receive CPC requests can respectively
  • the first C-MN sends a CPC request response, and the CPC request response sent by any C-SN includes the frequency point to be measured of the C-SN.
  • the first C-MN sends a CHO request response to the S-MN.
  • the S-MN receives the CHO request response sent by the first C-MN.
  • the first C-MN may generate an RRC configuration message of the first C-MN.
  • the RRC configuration message of the first C-MN may include RRC configuration information related to the first C-MN (also referred to as the MN-RRC configuration message), CPAC configuration for the PSCell managed by the first C-SN (for example, referred to as the MN-RRC configuration message). a CPAC configuration).
  • the first CPAC configuration includes an SN-RRC configuration message corresponding to the first C-SN, for example, a wireless air interface configuration corresponding to the first C-SN, and an execution trigger condition corresponding to the first C-SN.
  • the RRC configuration message of the candidate MN includes: the MN-RRC configuration message corresponding to the first C-MN, the SN-RRC configuration message corresponding to the first C-SN, and the SN-RRC configuration message corresponding to the first C-SN.
  • the execution trigger condition corresponding to SN includes: the MN-RRC configuration message corresponding to the first C-MN, the SN-RRC configuration message corresponding to the first C-SN, and the SN-RRC configuration message corresponding to the first C-SN.
  • the first C-MN After the first C-MN generates the RRC configuration message of the first C-MN, it may send a CHO request response to the S-MN.
  • the CHO request response may include the RRC configuration message of the first C-MN, the CPAC configuration, and the frequency point to be measured of the first C-SN. It can also be understood that the CHO request response includes: the MN-RRC configuration message corresponding to the first C-MN, the SN-RRC configuration message corresponding to the first C-SN, and the execution trigger corresponding to the first C-SN. conditions, and the frequency point to be measured of the first C-SN.
  • the S-MN sends the first RRC configuration message to the UE.
  • the UE receives the first RRC configuration message sent by the S-MN.
  • the S-MN can determine the measurement configuration, such as the measurement object and measurement gap.
  • the measurement objects may include the frequency point to be measured of the S-MN, the frequency point to be measured of the first C-MN, the frequency point to be measured of the S-SN, and the frequency point to be measured of the first C-SN.
  • the UE measures some or all of the frequency points to be measured in the measurement object according to the measurement configuration to determine the target cell. Since the measurement object includes the frequency point to be measured of the first C-SN, when the UE evaluates whether the triggering condition of CHO is met, in addition to measuring the frequency point to be measured of the C-MN, it also measures the frequency point to be measured of the first C-SN. , that is, when the UE evaluates whether the execution triggering condition of CHO is met, it also evaluates whether the execution triggering condition of CPAC is met. How to configure the measurement gap for the UE will be introduced in detail below and will not be introduced here.
  • the S-MN can also determine the CHO configuration and CPAC configuration.
  • the CPAC configuration configured by the S-MN is called the second CPAC configuration.
  • the CHO configuration determined by the S-MN includes radio air interface configurations corresponding to all C-MNs including the first C-MN, and execution triggering conditions corresponding to all C-MNs.
  • the second CPAC configuration may include wireless air interface configurations corresponding to all C-SNs including the first C-SN and execution trigger conditions corresponding to all C-SNs.
  • the execution trigger condition corresponding to the MN can also be understood as the execution trigger condition corresponding to the PCell (also called candidate PCell) managed by the MN.
  • the execution trigger condition corresponding to the SN can also be understood as the execution trigger condition corresponding to the PSCell (also called candidate PSCell) managed by the SN.
  • the candidate PSCells include all PSCells managed by all C-SNs determined by the first C-MN.
  • the execution trigger condition corresponding to the candidate MN (for example, the aforementioned first C-MN), that is, the first execution trigger condition, is the execution trigger condition of the CHO, and is the trigger condition that needs to be satisfied for the UE to switch to a PCell. That is to say, the process of switching to the PCell is triggered only when the UE satisfies the first execution triggering condition corresponding to a PCell.
  • the execution trigger condition corresponding to the candidate SN (such as the aforementioned first C-SN), that is, the second execution trigger condition, is the execution trigger condition of CPAC and is the trigger condition that needs to be met for the UE to switch to a PSCell.
  • the process of switching to the PSCell is triggered only when the UE satisfies the second execution triggering condition corresponding to the PSCell.
  • one candidate PCell corresponds to a first execution trigger condition, and the first execution trigger conditions corresponding to different candidate PCells may be the same or different.
  • One candidate PSCell corresponds to a second execution trigger condition, and the second execution trigger conditions corresponding to different candidate PSCells may be the same or different.
  • the S-MN After the S-MN determines the measurement object and the measurement gap (for example, called the first measurement gap), the CHO configuration and the second CPAC configuration corresponding to the measurement object, these information can be provided to the UE.
  • the S-MN sends a first RRC configuration message to the UE, where the first RRC configuration message includes a CHO configuration, a second CPAC configuration, a measurement object, and a first measurement gap configuration corresponding to the measurement object.
  • the first RRC configuration message includes: radio air interface configurations corresponding to all C-MNs including the first C-MN, and first execution trigger conditions corresponding to all C-MNs, including the first C-MN.
  • Wireless air interface configurations corresponding to all C-SNs including a C-SN, and second execution trigger conditions corresponding to all C-SNs that is, the second execution trigger conditions corresponding to the candidate PSCell).
  • the first RRC configuration message has multiple implementation forms.
  • the implementation form of the first RRC configuration message is introduced below in conjunction with the implementation form of the CHO request response.
  • the second RRC configuration is introduced, that is, the aforementioned MN RRC configuration message corresponding to the first C-MN (also referred to as the C-MN RRC configuration message in this application).
  • the second RRC configuration message may include: an information element that carries both the C-MN configuration and the C-SN configuration including the CPAC execution trigger condition, where the C-SN configuration including the CPAC execution trigger condition may also be called Configure CPAC C-SN.
  • the CPAC C-SN configuration is not included in the Candidate Cell RRC configuration, e.g.
  • Candidate Cell RRC configuration only indicates the name of the cell, and other names can be used to represent the cell, which is not limited in this application.
  • the first RRC configuration message may be understood as an RRC configuration message related to the S-MN (also referred to as an S-MN RRC configuration message in this application).
  • the first RRC configuration message includes a second RRC configuration message and a first execution trigger condition corresponding to the first C-MN.
  • the second RRC configuration message includes the radio air interface configuration of the first C-MN and the second execution trigger condition corresponding to the candidate PSCell, and the information elements in the first RRC configuration message except the second RRC configuration message also include the candidate The identification information of the PSCell and the second execution trigger condition corresponding to the candidate PSCell.
  • the identification information of the candidate PSCell may be the ID of the candidate PSCell, and the identification information of the candidate PSCell may be a list of candidate PSCells, and the list includes the ID of each candidate PSCell.
  • the configuration for the first execution trigger condition in the first RRC configuration message can be deleted, that is, only the second RRC configuration message is retained, so that subsequent operations can be performed according to the current There are CPAC configurations for CPAC assessment.
  • the implementation form of the first RRC configuration message is as follows:
  • Candidate Cell RRC configuration carries CPAC C-SN configuration. It can be seen that the execution condition of CPAC is included not only in the second RRC configuration message, but also in the information elements in the first RRC configuration message except the second RRC configuration message.
  • the second RRC configuration message that is, Candidate Cell RRC configuration, can be encapsulated in a container.
  • the UE obtains the execution condition of CPAC from the Source cell RRC configuration. It can obtain the execution trigger condition of CPAC and evaluate it without parsing the Candidate Cell RRC configuration.
  • the UE can delete the configuration for the first execution trigger condition in the Source cell RRC configuration, that is, only retain the Candidate Cell RRC configuration, so that subsequent CPAC evaluations can be performed based on the stored historical CPAC configuration.
  • the cell Candidate Cell RRC configuration in the second RRC configuration message can carry the C-MN configuration and the CPAC C-SN configuration, or it can carry the C-MN configuration but not the CPAC C-SN configuration, therefore, it can be explained through the indication information Whether Candidate Cell RRC configuration carries CPAC C-SN configuration.
  • the Candidate Cell RRC configuration includes an indication of whether to carry the CPAC C-SN configuration. If CHO and CPAC are triggered at the same time, the UE can use the Candidate Cell RRC configuration that carries the CPAC C-SN configuration; if CHO is triggered, but CPAC is not triggered, the UE can use the Candidate Cell RRC configuration that does not carry the CPAC C-SN configuration.
  • the UE can configure only the MN and not the SN. If the Candidate Cell RRC configuration contains the C-MN configuration and the configuration of the blindly configured SN, the UE can configure the MN and blindly configure the SN. .
  • the first RRC configuration message may be implemented in the following form:
  • Source cell RRC configuration//First RRC configuration message S-MN RRC configuration message
  • Meas config for CPAC//CPAC measurement configuration (including the configuration of measurement objects and reported events)
  • Implementation form two the first RRC configuration message includes a second RRC configuration message and a first execution trigger condition corresponding to the first C-MN; wherein the second RRC configuration message includes the radio air interface configuration of the first C-MN, and, The second execution triggering condition corresponding to the candidate PSCell, and the information elements in the first RRC configuration message except the second configuration RRC message do not include the identification information of the candidate PSCell and the second execution triggering condition corresponding to the candidate PSCell.
  • the difference from the first implementation form is that the information elements in the first RRC configuration message except the second RRC configuration message do not include the identification information of the candidate PSCell and the second execution triggering condition corresponding to the candidate PSCell. That is, the second execution trigger condition corresponding to the candidate PSCell is only included in the second RRC configuration message.
  • the terminal device evaluates the execution triggering condition of CHO and the execution triggering condition of CPAC, it can obtain the execution triggering condition of CPAC by parsing the second RRC configuration message.
  • the second RRC configuration message is parsed only after the UE evaluates that the CHO execution trigger is satisfied; if CHO is not triggered, there is no need to parse the second RRC configuration message.
  • the implementation form of the first RRC configuration message is as follows:
  • Candidate Cell RRC configuration carries CPAC C-SN configuration. It can be seen that the Execution condition of CPAC is only included in the second RRC configuration message, and the information elements in the first RRC configuration message except the second RRC configuration message do not include the Execution condition of CPAC.
  • the UE parses the Candidate Cell RRC configuration to obtain the CPAC execution trigger condition and evaluates it. Similar to implementation form 1, if CHO is triggered but CPAC is not triggered, after the UE successfully performs the primary cell handover, it can only retain the Candidate Cell RRC configuration, that is, delete the configuration for the first execution trigger condition in the Source cell RRC configuration. CPAC evaluation can be performed based on the stored historical CPAC configuration.
  • the second RRC configuration message may include: Candidate Cell RRC configuration carrying CPAC C-SN configuration, or may also include: Candidate Cell RRC configuration not carrying CPAC C-SN configuration.
  • the implementation form of the first RRC configuration message is as follows:
  • Implementation form three the first RRC configuration message includes the second RRC configuration message and the first execution trigger condition corresponding to the first C-MN; wherein the second RRC configuration message includes the wireless air interface configuration of the first C-MN, C-SN The wireless air interface configuration, and the second RRC configuration message does not include the second execution trigger condition corresponding to the candidate PSCell, and the information elements in the first RRC configuration message except the second RRC configuration message also include the identification information of the candidate PSCell. The second execution trigger condition corresponding to the candidate PSCell.
  • the difference from the first implementation form is that the second RRC configuration message does not include the second execution triggering condition corresponding to the candidate PSCell, but the second RRC configuration message includes the wireless air interface configuration of the C-SN.
  • the terminal device when the terminal device evaluates the execution trigger condition of CPAC, it can reuse the second execution trigger condition configured outside the second RRC configuration message. That is, the terminal device does not need to parse the second RRC configuration message. Moreover, if CHO is triggered but CPAC is not triggered, after the UE successfully performs primary cell handover, it can only retain the second RRC configuration message, but the subsequent terminal device needs to wait for the new CPAC configuration sent by the network device to perform CPAC evaluation.
  • the implementation form of the first RRC configuration message is as follows:
  • Candidate Cell RRC configuration carries CPAC C-SN configuration. It can be seen that the Execution condition of CPAC is only included in the cells in the first RRC configuration message except the second RRC configuration message, that is, the second RRC configuration message does not include the Execution condition of CPAC. In this case, when the UE evaluates the CPAC execution trigger condition, it can reuse the second execution trigger condition configured outside the Candidate Cell RRC configuration. That is, the UE does not need to parse the Candidate Cell RRC configuration. Moreover, if CHO is triggered but CPAC is not triggered, the UE can only retain the Candidate Cell RRC configuration, but the subsequent terminal device needs to wait for the new CPAC configuration sent by the network device for CPAC evaluation.
  • the second RRC configuration message may include Candidate Cell RRC configuration carrying CPAC C-SN configuration, or may include Candidate Cell RRC configuration not carrying CPAC C-SN configuration.
  • the implementation form of the first RRC configuration message is as follows:
  • the UE determines that the execution triggering conditions of CHO and/or CPAC are met based on the first RRC configuration message, and the UE will send an RRC Reconfiguration Complete message to the source node. If the S-MN receives the RRC Reconfiguration Complete message sent by the UE, the S-MN performs early data forwarding; if the S-MN receives the CPAC RRC Reconfiguration Complete message sent by the UE, the S-MN notifies the S-SN Perform early data forwarding.
  • the S-MN sends data to the UE, and the S-MN continues to forward user data to the target node.
  • the S-MN stops transmitting the UE's data and stops early data forwarding to the target node.
  • the target node continues to receive and store data from S-MN, and clears the user data that S-MN has sent in the stored data based on the early status transfer message sent by S-MN, allowing S-MN to Send one or more early status transfer messages to the target node.
  • the S-MN performs late data forwarding.
  • the S-MN notifies the MN after successful handover/successfully changed SN of the latest number of the data received by executing late data forwarding, that is, what number the data is numbered to, so that the MN after successful handover/successfully changed SN starts from this The latest number starts numbering newly received unnumbered data.
  • the S-SN sends data to the UE, and the S-SN continues to forward user data to the target node; if the S-SN does not exist, the S-MN continues to forward the user data to the target node.
  • the target node forwards the user data.
  • a possible process based on the measurement configuration method provided by the embodiment of the present application is introduced below with a specific example. It should be understood that in order to allow the UE enough time to complete the measurement of the frequency points to be measured, a suitable measurement gap needs to be configured for the UE.
  • the measurement gap is based on the measurement object configuration, and the measurement gaps configured for different measurement objects are also different. And in different scenarios, the nodes configured to measure gaps may be different.
  • the MN determines the FR1gap mode and the related gap sharing configuration of FR1, while the SN determines the FR2gap mode and the related gap sharing configuration of FR2; in NE-DC and NR-DC, the MN determines the FR1 And FR2 gap mode and related gap sharing configuration. In the following example, it also involves how to configure the measurement gap for the UE.
  • Figure 3 is a flow chart of a first example of a measurement configuration method provided by an embodiment of the present application.
  • the S-MN reports the first S-SN's frequency point to be tested, the S-MN's frequency point to be tested, the first C-MN's frequency point to be tested, and the S-SN's frequency point to be tested. Take the frequency measurement point to determine the measurement gap as an example.
  • the S-MN sends a CHO request to one or more C-MNs.
  • the one or more C-MNs receive the CHO request sent by the S-MN.
  • S-MN For details, please refer to the relevant content of S201 mentioned above.
  • the first C-MN sends a CPA request to one or more C-SNs.
  • the one or more C-SNs receive the CPA request sent by the first C-MN.
  • the first C-SN sends a CPA request response to the first C-MN.
  • the first C-MN receives the CPA request response sent by the first C-SN.
  • the first C-MN may send a CPC request to one or more C-SNs, and the first C-SN may send a CPC request response to the first C-MN, which will not be described again.
  • the first C-MN sends a CHO request response to the S-MN.
  • the S-MN receives the CHO request response sent by the first C-MN.
  • the CHO request response includes the frequency point to be measured of the first C-SN.
  • the first C-MN receives the CPA request response sent by the first C-SN, obtains the frequency point to be measured of the first C-SN, and sends it to the S-MN through the CHO request response.
  • S204 can be referred to above, and will not be described again here.
  • the CHO request response includes the identification and/or data forwarding address of the candidate secondary node to implement CPAC Data is forwarded directly.
  • the S-MN sends the first RRC configuration message to the UE.
  • the UE receives the first RRC configuration message sent by the S-MN.
  • the S-MN receives the CHO request response and may generate a first RRC configuration message, where the first RRC configuration message includes the configuration of the measurement object and the first measurement gap configuration.
  • the first measurement gap configuration is the configuration of the first measurement gap.
  • the first measurement gap configuration may be configured based on the frequency point to be measured of the S-MN, the frequency point to be measured of the first C-MN, the frequency point to be measured of the SN, and the frequency point to be measured of the C-SN. It should be understood that the more frequency points, the longer the measurement time required.
  • the first measurement gap configuration can be configured according to the frequency point to be measured of the S-MN, the frequency point to be measured of the first C-MN, the frequency point to be measured of the SN, and the frequency point to be measured of the C-SN. , that is, configuring enough time for measurement to avoid missing part of the frequency points to be measured.
  • the S-MN may also send the configuration and measurement gap type of the first measurement gap to the S-SN. Therefore, the S-SN can determine whether to configure a gap for the UE and what kind of gap to configure based on the first measurement gap configuration and the measurement gap type. For example, in the EN-DC scenario or NGEN-DC scenario, the first measurement gap configuration is the gap configuration of FR1, and the measurement gap type is the measurement gap type for FR1. When at least one SN's frequency point to be measured is within FR2, the S-SN can also configure FR2 gap measurement for the UE.
  • the UE sends an RRC reconfiguration complete message to the S-MN.
  • the S-MN receives the RRC reconfiguration complete message sent by the UE.
  • the UE may complete reconfiguration according to the first RRC configuration message. After the UE completes the reconfiguration, it sends an RRC reconfiguration complete message to the S-MN.
  • the S-MN receives the RRC reconfiguration completion message fed back by the UE and starts data forwarding between the S-MN and the C-MN. S-MN also notifies S-SN to prepare data forwarding of CPAC, that is, data forwarding between S-SN and C-SN.
  • CPAC's data forwarding includes two methods, one is called direct data forwarding, and the other is called indirect data forwarding.
  • direct data forwarding method when the S-MN notifies the S-SN that it is ready to perform data forwarding, it also provides the S-SN with one or more C-SN identifiers and/or the data forwarding address corresponding to the C-SN.
  • S-SN performs early data forwarding based on the data forwarding address of each C-SN.
  • the CHO request response sent by the C-MN to the S-MN includes the identification and/or data forwarding address of the one or more C-SNs.
  • Indirect data forwarding method that is, when the S-MN notifies the S-SN that it is ready to perform data forwarding, it does not provide the S-SN with a data forwarding address or its own data forwarding address.
  • the S-SN forwards the data to the S-MN
  • the S-MN forwards the data to the C-MN
  • the C-MN forwards the data to the C-SN. It can be seen that if the indirect data forwarding method is used, the CHO request response may not include the identifier of the C-SN and/or the data forwarding address.
  • the UE determines the target cell and switches to the target cell.
  • the UE may measure the measurement object in the first RRC configuration message, thereby determining the target cell that satisfies the execution trigger condition based on the measurement results. That is, the UE evaluates the execution trigger condition of CHO (the first execution trigger condition) and the execution trigger condition of CPAC (the second execution trigger condition).
  • the execution trigger condition of CHO the first execution trigger condition
  • CPAC the second execution trigger condition
  • the PSCell corresponding to PCell 1 includes PSCell 1, PSCell 2 and PSCell 3.
  • PSCell corresponding to PCell 2 includes PSCell 4 and PSCell 5.
  • Case 1 The first execution trigger condition and the second execution trigger condition are met.
  • the UE determines that both CHO and CPAC are triggered. For example, PCell 2 satisfies the first execution trigger condition, and PSCell 4 satisfies the second execution trigger condition. In this case, the UE can try to access PCell 2, and can also try to change the PSCell, that is, change to PSCell 4.
  • PCell 2 can be understood as the target PCell
  • PSCell 4 can be understood as the target PSCell.
  • the UE sends an RRC configuration complete message to the second C-MN.
  • the second C-MN receives the RRC configuration complete message sent by the UE.
  • the second C-MN is the C-MN that manages PCell 2. It should be understood that if multiple C-MNs send CHO request responses to the S-MN, the second C-MN is one of the C-MNs that send CHO request responses. Optionally, the second C-MN is the aforementioned first C-MN.
  • the RRC configuration completion message can be used by the UE to establish a connection with the second C-MN.
  • the RRC configuration completion message includes identification information of the target PSCell.
  • the RRC configuration completion message may include the identifier (identifier, ID) of PSCell 4.
  • the second C-MN sends an SN reconfiguration complete message to the second C-SN.
  • the second C-SN receives the SN reconfiguration complete message sent by the second C-MN.
  • the second C-MN may determine to send an SN reconfiguration complete message to the second C-SN according to the ID of PSCell 4.
  • the SN reconfiguration complete message may be used by the UE to change the PSCell.
  • the second C-SN is the C-SN that manages PSCell 4. It should be understood that the second C-SN belongs to at least one C-SN determined by the second C-MN. If the second C-MN determines a C-SN, then the second C-SN is the C-SN. If no.
  • the second C-MN determines multiple C-SNs, and the second C-SN is one C-SN among the multiple C-SNs.
  • the second C-MN sends a handover completion message to the S-MN.
  • the second C-MN determines that the UE has completed the cell handover and may send a handover completion message to the S-MN.
  • the S-MN determines that late data forwarding is used for this handover, then after receiving the handover completion message, the user data and the SN status information corresponding to the user data will be forwarded to the second C-MN.
  • the second C-MN can use late data forwarding to forward user data and SN status information corresponding to the user data to the second C-SN.
  • Case 2 The first execution trigger condition is met, but the second execution trigger condition is not met.
  • the UE determines that CHO is triggered but CPAC is not triggered. For example, PCell 2 satisfies the first execution trigger condition, and neither PSCell 4 nor PSCell 5 satisfies the second execution trigger condition. In this case, the UE can try to access PCell 2, that is, PCell 2 is used as the target PCell.
  • the UE sends an RRC configuration complete message to the second C-MN.
  • the second C-MN receives the RRC configuration complete message sent by the UE.
  • the second C-MN is the C-MN that manages PCell 2.
  • the RRC configuration completion message can be used by the UE to establish a connection with the second C-MN.
  • the UE only performs PCell handover.
  • the second C-MN sends a handover completion message to the S-MN.
  • the second C-MN determines that the UE has completed the cell handover and sends a handover completion message to the S-MN.
  • the UE can determine to keep the CPAC configuration, that is, subsequently use the existing CPAC configuration to determine whether to perform cell switching. If the first RRC configuration message is implemented in implementation form 3, the UE can delete the stored CPAC configuration and then wait for the new CPAC configuration to determine whether to perform cell switching.
  • Example 4 is a flow chart of a second example of a measurement configuration method provided by an embodiment of the present application.
  • the difference between Example 2 and Example 1 is that the first C-MN may configure a measurement gap according to the frequency point to be measured of the first S-SN and the frequency point to be measured of the first C-MN, and send the measurement gap to S-MN.
  • the S-MN sends a CHO request to one or more C-MNs.
  • the one or more C-MNs receive the CHO request sent by the S-MN.
  • the first C-MN sends a CPA request to one or more C-SNs.
  • the one or more C-SNs receive the CPA request sent by the first C-MN.
  • S302 please refer to the relevant content of S302 mentioned above.
  • the first C-SN sends a CPA request response to the first C-MN.
  • the first C-MN receives the CPA request response sent by the first C-SN.
  • the first C-MN may send a CPC request to one or more C-SNs, and the first C-SN may send a CPC request response to the first C-MN, which will not be described again.
  • the first C-MN sends a CHO request response to the S-MN.
  • the S-MN receives the CHO request response sent by the first C-MN.
  • the CHO request response may include the frequency point to be measured and the second measurement gap configuration of the first C-SN.
  • the second measurement gap is a measurement gap that the first C-MN can configure according to the frequency point to be measured of the first S-SN and the frequency point to be measured of the first C-MN. It can also be understood that in addition to providing the S-MN with the frequency point to be measured of the first C-SN, the first C-MN can also configure a gap according to the frequency point to be measured of the first C-SN and its own frequency point to be measured. For example, the second measurement gap.
  • the second measurement gap configuration can be determined based on the second measurement gap configuration and the frequency point to be measured of the S-MN and the frequency point to be measured of the S-SN. One measures the gap. It can also be understood that the second measurement gap can be used to assist the S-MN in configuring a more appropriate gap for the UE.
  • the S-MN can configure the first measurement gap for the UE; conversely, if the second measurement gap is larger than the first measurement gap, then the S-MN can configure the second measurement gap for the UE, This leaves enough time for the UE to complete the measurement of the frequency point that needs to be measured.
  • the S-MN sends the first RRC configuration message to the UE.
  • the UE receives the first RRC configuration message sent by the S-MN.
  • the S-MN can also send the configuration of the first measurement gap and the measurement gap type to the S-SN.
  • the relevant content of the embodiment of Figure 3 which will not be described again here.
  • the UE sends an RRC reconfiguration complete message to the S-MN.
  • the S-MN receives the RRC reconfiguration complete message sent by the UE.
  • S306 the relevant content of S306 mentioned above, which will not be described again here.
  • the UE determines the target cell and switches to the target cell.
  • situation 1 to execute S408a-S411a
  • situation 2 is to execute S408b-S410b.
  • S308b-S310b which will not be described again.
  • the UE determines that both CHO and CPAC are triggered. For example, PCell 2 satisfies the first execution trigger condition, and PSCell 4 satisfies the second execution trigger condition. In this case, the UE can try to access PCell 2, and can also try to change the PSCell, that is, change to PSCell 4.
  • PCell 2 can be understood as the target PCell
  • PSCell 4 can be understood as the target PSCell.
  • the UE sends an RRC configuration complete message to the second C-MN.
  • the second C-MN receives the RRC configuration complete message sent by the UE.
  • the second C-MN is the C-MN that manages PCell 2.
  • the RRC configuration completion message includes identification information of the target PSCell. Following the above example, the RRC configuration completion message may include the ID of PSCell 4.
  • the second C-MN sends an SN reconfiguration complete message to the second C-SN.
  • the second C-SN receives the SN reconfiguration complete message sent by the second C-MN.
  • the second C-MN can determine to send an SN reconfiguration complete message to the second C-SN according to the ID of PSCell 4.
  • the SN reconfiguration complete message can be used by the UE to change the PSCell.
  • the second C-MN sends a handover completion message to the S-MN.
  • the second C-MN determines that the UE has completed the cell handover and may send a handover completion message to the S-MN.
  • Case 2 The first execution trigger condition is met, but the second execution trigger condition is not met.
  • the UE determines that CHO is triggered but CPAC is not triggered. For example, PCell 2 satisfies the first execution trigger condition, and neither PSCell 4 nor PSCell 5 satisfies the second execution trigger condition. In this case, the UE can try to access PCell 2, that is, PCell 2 is used as the target PCell.
  • the UE sends an RRC configuration complete message to the second C-MN.
  • the second C-MN receives the RRC configuration complete message sent by the UE.
  • the second C-MN is the C-MN that manages PCell 2.
  • the RRC configuration completion message can be used by the UE to establish a connection with the second C-MN.
  • the UE only performs PCell handover.
  • the second C-MN sends a handover completion message to the S-MN.
  • the second C-MN determines that the UE has completed the cell handover and sends a handover completion message to the S-MN.
  • Example 2 The difference between Example 2 and Example 1 is that the first C-MN may configure the second measurement gap and provide it to the S-MN.
  • the first C-MN may configure the second measurement gap and provide it to the S-MN.
  • FIG. 5 is a flow chart of a third example of a measurement configuration method provided by an embodiment of the present application.
  • the S-MN provides the frequency point to be measured in FR2 to the S-SN, and the S-SN configures the measurement gap in FR2 to the UE.
  • S-MN can configure the measurement gap within FR1. It can also be understood that the S-MN and S-SN negotiate to complete the configuration of the gap, thereby realizing the configuration of the measurement gap in the EN-DC scenario and the NGEN-DC scenario.
  • the S-MN sends a CHO request to one or more C-MNs.
  • the one or more C-MNs receive the CHO request sent by the S-MN.
  • the first C-MN sends a CPA request to one or more C-SNs.
  • the one or more C-SNs receive the CPA request sent by the first C-MN.
  • the first C-SN sends a CPA request response to the first C-MN.
  • the first C-MN receives the CPA request response sent by the first C-SN.
  • the first C-MN may send a CPC request to one or more C-SNs, and the first C-SN may send a CPC request response to the first C-MN, which will not be described again.
  • the first C-MN sends a CHO request response to the S-MN.
  • the S-MN receives the CHO request response sent by the first C-MN.
  • the S-MN sends the measurement frequency point information to the S-SN.
  • the S-SN receives the measurement frequency point information sent by the S-MN.
  • the measurement frequency point information indicates the frequency point to be measured located in FR2 among the frequency points to be measured of the first C-SN. It can be understood that the frequency point to be tested of the S-MN and the frequency point to be tested of the first C-MN are both located in FR1.
  • the frequency points to be tested of the S-SN and the first C-SN can be located in FR1, or they can Located within FR2.
  • the S-MN can only determine the measurement gap configuration within FR1. Therefore, the S-MN can provide the frequency point under test located in FR2 among the frequency points under test of the first C-SN to S-SN, whereby the S-SN determines the measurement gap configuration within FR2.
  • S506 and S-SN determine the third measurement gap according to the measurement frequency point information.
  • the S-SN determines the third measurement gap based on the frequency point to be measured located within FR2 among the frequency points to be measured of the first C-SN.
  • the S-SN sends the third measurement gap configuration to the UE.
  • the UE receives the third measurement gap sent by the S-SN.
  • the S-SN can provide the UE with the measurement gap of the frequency point to be measured located in FR2, that is, the third measurement gap.
  • the S-MN sends the first RRC configuration message to the UE.
  • the UE receives the first RRC configuration message sent by the S-MN.
  • the measurement configuration in the first RRC configuration message includes the measurement gap configuration corresponding to the frequency point to be measured in FR1, for example, it is called the fourth measurement gap configuration, which is configured by the S-MN according to the frequency point to be measured in FR1.
  • Frequency measurement point configuration For the UE, the source of the measurement gap configuration includes two parts. One part comes from the S-MN, that is, the measurement gap configuration of the frequency point to be measured located in FR1, and the other part comes from the S-SN, that is, the frequency point to be measured located in FR2. Point measurement gap configuration. In this example, since the S-MN and S-SN negotiate to complete the configuration of the measurement gap, it is applicable to the EN-DC scenario and the NGEN-DC scenario.
  • the UE sends an RRC reconfiguration complete message to the S-MN.
  • the S-MN receives the RRC reconfiguration complete message sent by the UE.
  • S306 the relevant content of S306 mentioned above, which will not be described again here.
  • the UE determines the target cell and switches to the target cell.
  • situation 1 to execute S511a-S514a.
  • S308a-S311a which will not be described again.
  • case 2 is to execute S511b-S513b.
  • S308b-S310b which will not be described again.
  • Case 1 The first execution trigger condition and the second execution trigger condition are met.
  • the UE determines that both CHO and CPAC are triggered. For example, PCell 2 satisfies the first execution trigger condition, and PSCell 4 satisfies the second execution trigger condition. In this case, the UE can try to access PCell 2, and can also try to change the PSCell, that is, change to PSCell 4.
  • PCell 2 can be understood as the target PCell
  • PSCell 4 can be understood as the target PSCell.
  • the UE sends an RRC configuration complete message to the second C-MN.
  • the second C-MN receives the RRC configuration complete message sent by the UE.
  • the second C-MN is the C-MN that manages PCell 2.
  • the RRC configuration completion message includes identification information of the target PSCell. Following the above example, the RRC configuration completion message may include the ID of PSCell 4.
  • the second C-MN sends an SN reconfiguration complete message to the second C-SN.
  • the second C-SN receives the SN reconfiguration complete message sent by the second C-MN.
  • the second C-MN can determine to send an SN reconfiguration complete message to the second C-SN according to the ID of PSCell 4.
  • the SN reconfiguration complete message can be used by the UE to change the PSCell.
  • the second C-MN sends a handover completion message to the S-MN.
  • the second C-MN determines that the UE has completed the cell handover and may send a handover completion message to the S-MN.
  • Case 2 The first execution trigger condition is met, but the second execution trigger condition is not met.
  • the UE determines that CHO is triggered but CPAC is not triggered. For example, PCell 2 satisfies the first execution trigger condition, and neither PSCell 4 nor PSCell 5 satisfies the second execution trigger condition. In this case, the UE can try to access PCell 2, that is, PCell 2 is used as the target PCell.
  • the UE sends an RRC configuration complete message to the second C-MN.
  • the second C-MN receives the RRC configuration complete message sent by the UE.
  • the second C-MN is the C-MN that manages PCell 2.
  • the RRC configuration completion message can be used by the UE to establish a connection with the second C-MN.
  • the UE only performs PCell handover.
  • the second C-MN sends a handover completion message to the S-MN.
  • the second C-MN determines that the UE has completed the cell handover and sends a handover completion message to the S-MN.
  • Example 3 The difference between Example 3 and Example 1 is that the S-MN can provide the S-SN with the frequency points to be measured located within FR2 among the frequency points to be measured of the candidate SN, and the S-SN provides the UE with the measurement gap corresponding to FR2. Configuration, the S-MN provides the UE with the measurement gap configuration corresponding to FR1, which is applicable to EN-DC scenarios and NGEN-DC scenarios.
  • the S-MN provides the UE with the measurement gap configuration corresponding to FR1, which is applicable to EN-DC scenarios and NGEN-DC scenarios.
  • the first C-SN may configure the measurement gap corresponding to FR2 and indicate it to the first C-MN, and the first C-MN indicates the measurement gap corresponding to FR2 to the S-MN.
  • the S-MN indicates the measurement gap corresponding to FR2 to the S-SN.
  • the S-SN configures the measurement gap for the UE according to the measurement gap corresponding to FR2 indicated by the S-MN.
  • the S-MN sends a CHO request (or CPC request) to one or more C-MNs.
  • the one or more C-MNs receive the CHO request (or CPC request) sent by the S-MN.
  • CHO request or CPC request
  • the first C-MN sends a CPA request (or CPC request response) to one or more C-SNs.
  • the one or Multiple C-SNs receive the CPA request (or CPC request response) sent by the first C-MN.
  • CPA request or CPC request response
  • the first C-SN sends a CPA request response to the first C-MN.
  • the first C-MN receives the CPA request response sent by the first C-SN.
  • Example 1 The difference from Example 1 is that the CPA request response includes the measurement gap configuration determined by the first C-SN based on the frequency point to be measured located in FR2, that is, the measurement gap configuration corresponding to FR2.
  • the CPA request response includes the measurement gap configuration determined by the first C-SN based on the frequency point to be measured located in FR2, that is, the measurement gap configuration corresponding to FR2.
  • other contents included in the CAP request response please refer to the related introduction of S303 mentioned above, and will not be repeated here.
  • the first C-MN sends a CHO request response to the S-MN.
  • the S-MN receives the CHO request response sent by the first C-MN.
  • Example 1 The difference from Example 1 is that the CHO request response also includes the measurement gap configuration corresponding to FR2.
  • the CHO request response also includes the measurement gap configuration corresponding to FR2.
  • the S-MN sends the third measurement gap configuration and measurement gap type to the S-SN.
  • the S-SN receives the third measurement gap configuration and measurement gap type sent by the S-MN.
  • the measurement gap type indicates the type of third measurement gap configuration, for example, per-UE gap or per-FR gap.
  • the third measurement gap configuration may be obtained by the S-MN from the CHO request response, or may be a measurement gap configuration re-determined by the S-MN based on the measurement gap configuration obtained from the CHO request response.
  • the S-SN sends the fifth measurement gap configuration to the UE.
  • the UE receives the fifth measurement gap sent by the S-SN.
  • the S-SN may configure a measurement gap corresponding to FR2 for the UE, which is called a fifth measurement gap, for example. If the third measurement gap type indicates per-FR gap, the S-SN may configure the third measurement gap as the fifth measurement gap configuration. Alternatively, the S-SN may determine the fifth measurement gap configuration based on the third measurement gap configuration and its frequency point to be measured located in FR2.
  • the S-MN sends the first RRC configuration message to the UE.
  • the UE receives the first RRC configuration message sent by the S-MN.
  • the measurement configuration in the first RRC configuration message includes the measurement gap configuration of the frequency point to be measured located in FR1.
  • the measurement configuration in the first RRC configuration message includes the measurement gap configuration of the frequency point to be measured located in FR1.
  • the UE sends an RRC reconfiguration complete message to the S-MN.
  • the S-MN receives the RRC reconfiguration complete message sent by the UE.
  • S306 the relevant content of S306 mentioned above, which will not be described again here.
  • the UE determines the target cell and switches to the target cell.
  • situation 1 to execute S610a-S613a.
  • S511a-S514a which will not be described again.
  • case 2 is to execute S610b-S612b.
  • S511b-S513b which will not be described again.
  • Case 1 The first execution trigger condition and the second execution trigger condition are met.
  • the UE determines that both CHO and CPAC are triggered.
  • the UE sends an RRC configuration complete message to the second C-MN.
  • the second C-MN receives the RRC configuration complete message sent by the UE.
  • the second C-MN is the C-MN that manages the target PCell.
  • the RRC configuration completion message includes identification information of the target PSCell.
  • the second C-MN sends an SN reconfiguration complete message to the second C-SN.
  • the second C-SN receives the SN reconfiguration complete message sent by the second C-MN.
  • the second C-MN sends a handover completion message to the S-MN.
  • Case 2 The first execution trigger condition is met, but the second execution trigger condition is not met.
  • the UE determines that CHO is triggered but CPAC is not triggered.
  • the UE sends an RRC configuration complete message to the second C-MN.
  • the second C-MN receives the RRC configuration complete message sent by the UE.
  • the second C-MN is the C-MN that manages the target PCell.
  • the RRC configuration completion message can be used by the UE to establish a connection with the second C-MN. The UE only performs PCell handover.
  • the second C-MN sends a handover completion message to the S-MN.
  • Example 4 The difference between Example 4 and Example 3 is that the S-MN can determine the measurement gap according to the frequency point to be measured by the C-SN, and provide the measurement gap and the type of the measurement gap to the S-SN, and the S-SN
  • the UE provides the measurement gap configuration corresponding to FR2
  • the S-MN provides the UE with the measurement gap configuration corresponding to FR1, which is applicable to EN-DC scenarios and NGEN-DC scenarios.
  • both CHO and CPAC can be configured.
  • the C-MN can provide the frequency point to be measured of the C-SN to the S-MN. Therefore, the S-MN can configure the measurement object according to the frequency point to be measured of the C-SN, so that when the terminal device evaluates whether the trigger condition of CHO is met, in addition to measuring the frequency point to be measured of the C-SN, it also measures the frequency point to be measured of the S-SN.
  • Frequency points that is, it also evaluates whether the triggering conditions of CPAC are met to increase the chance of CPAC triggering. This allows the terminal device to complete CPAC more quickly, facilitates the terminal device to access a more suitable target cell, and improves the communication quality after the terminal device accesses the target cell.
  • the S-MN and S-SN can negotiate to complete the configuration of the measurement gap.
  • the S-MN can provide the frequency point to be measured located in FR2 to the S-SN.
  • the S-SN configures the measurement gap corresponding to FR2 and provides it to the terminal device.
  • the S-MN provides the measurement gap corresponding to FR1 to the terminal equipment and provides it to the terminal equipment, which can be applied to the measurement gap configuration in the EN-DC scenario and the NGEN-DC scenario.
  • the methods provided by the embodiments of the present application are introduced from the perspective of interaction between the terminal device, the source primary node, the candidate primary node, the candidate secondary node, and the source secondary node.
  • the source master node and the candidate master node may include hardware structures and/or software modules to implement the above in the form of hardware structures, software modules, or hardware structures plus software modules.
  • FIG. 7 is a schematic block diagram of a communication device 700 provided by an embodiment of the present application.
  • the communication device 700 may include a processing module 710 and a transceiver module 720.
  • a storage unit may also be included, which may be used to store instructions (code or programs) and/or data.
  • the processing module 710 and the transceiver module 720 can be coupled with the storage unit.
  • the processing module 710 can read the instructions (code or program) and/or data in the storage unit to implement the corresponding method.
  • Each of the above modules can be set up independently or partially or fully integrated.
  • the communication device 700 can correspondingly implement the behaviors and functions of the source master node (S-MN) in the above method embodiments.
  • the communication device 700 can be the source master node, or can be a S-MN applied in the source master node.
  • the component (such as a chip or circuit) may also be a chip or chipset in the source master node, or a part of the chip used to perform related method functions.
  • the communication device 700 implements the method performed by the S-MN in any of the embodiments shown in Figures 2 to 6.
  • the transceiver module 720 may be configured to send a CHO request to one or more candidate master nodes, and receive a CHO request response sent by the first candidate master node, where the CHO request response includes the CHO configuration, the first CPAC configuration, and the waiting list of the candidate secondary node. Frequency measurement point.
  • the first candidate master node belongs to the one or more candidate master nodes.
  • the processing module 710 may be configured to determine a first RRC configuration message, where the first RRC configuration message includes a CHO configuration, a second CPAC configuration, and a measurement configuration.
  • the second CPAC configuration is determined based on the first CPAC configuration.
  • the measurement configuration includes a measurement object and a first measurement gap configuration corresponding to the measurement object.
  • the measurement objects include the frequency point to be measured of the source master node, the frequency point to be measured of the first candidate master node, the frequency point to be measured of the secondary master node, and the frequency point to be measured of the candidate secondary node.
  • the transceiving module 720 is also used to send the first RRC configuration message to the terminal device.
  • the processing module 710 is further configured to determine a first measurement gap configuration according to the measurement object; the transceiver module 720 is further configured to send the first measurement gap configuration and measurement gap type to the source secondary node.
  • the CHO request response also includes a second measurement gap configuration, which is determined based on the frequency point to be measured of the first candidate master node and the frequency point to be measured of the candidate secondary node,
  • the processing module 710 is further configured to determine the first measurement gap configuration according to the second measurement gap configuration;
  • the transceiver module 720 is further configured to send the first measurement gap configuration and measurement gap type to the source secondary node.
  • the CHO request response also includes a third measurement gap configuration.
  • the third measurement gap configuration is configured according to a frequency point located within FR2 among the frequency points to be measured of the candidate secondary node.
  • the transceiver module 720 is also configured to send measurement frequency point information to the source secondary node, where the measurement frequency point information indicates a frequency point located within FR2 among the frequency points to be measured of the candidate secondary node.
  • the lowest frequency of FR2 is greater than or equal to 24.25GHz, and the highest frequency of FR2 is less than or equal to 52.6GHz.
  • the processing module 710 is also configured to determine a fourth measurement gap configuration according to the frequency point to be measured of the candidate secondary node, where the frequency point to be measured of the candidate secondary node is a frequency point located within FR1.
  • the CHO request response includes the identity of the candidate secondary node and/or the address for data forwarding.
  • the first RRC configuration message includes a second RRC configuration message and a first execution trigger condition corresponding to the first candidate master node, where the second RRC configuration message includes a wireless link of the first candidate master node.
  • Air interface configuration, none of the candidate secondary nodes Line air interface configuration, and the second execution trigger condition corresponding to the candidate PSCell, and the information element in the first RRC configuration message except the second RRC configuration message also includes the identification information of the candidate PSCell and the second execution trigger. condition.
  • the candidate PSCell is managed by the candidate secondary node.
  • the first RRC configuration message includes a second RRC configuration message and a first execution trigger condition corresponding to the first candidate master node, where the second RRC configuration message includes a wireless link of the first candidate master node.
  • the air interface configuration, the wireless air interface configuration of the candidate secondary node, and the second execution trigger condition corresponding to the candidate PSCell, and the information elements in the first RRC configuration message except the second RRC configuration message do not include the identity of the candidate PSCell. information and a second execution trigger condition.
  • the candidate PSCell is managed by the candidate secondary node.
  • the first RRC configuration message includes a second RRC configuration message and a first execution trigger condition corresponding to the first candidate master node, wherein the second RRC configuration message includes the first candidate master node
  • the wireless air interface configuration of the candidate secondary node, and the second RRC configuration message does not include the second execution trigger condition corresponding to the candidate PSCell, and the information in the first RRC configuration message except the second RRC configuration message
  • the element also includes the identification information of the candidate PSCell and the second execution triggering condition.
  • the candidate PSCell is managed by the candidate secondary node.
  • the communication device 700 implements the method executed by the first candidate master node in any embodiment of FIGS. 2 to 6 .
  • the transceiver module 720 is configured to receive a CHO request sent by the source master node, send a CPA request to the candidate auxiliary node, and receive a CPA request response sent by the candidate auxiliary node, where the CPA request response includes the frequency point to be measured of the candidate auxiliary node.
  • the processing module 710 is used to determine a CHO request response, where the CHO request response includes the CHO configuration, the configuration information of the first CPAC, and the frequency point to be tested of the candidate secondary node.
  • the transceiver module 720 is also configured to send a CHO request response to the source master node, where the CHO request response includes the CHO configuration, the first CPAC configuration, and the frequency point to be measured of the candidate secondary node.
  • the transceiver module 720 is configured to receive a CHO request sent by the source master node, send a CPC request to the candidate secondary node, and receive a CPC request response sent by the candidate secondary node, where the CPC request response includes the frequency point to be measured of the candidate secondary node.
  • the processing module 710 is used to determine a CHO request response, where the CHO request response includes the CHO configuration, the first CPAC configuration, and the frequency point to be tested of the candidate secondary node.
  • the transceiver module 720 is also configured to send a CHO request response to the source master node, where the CHO request response includes the CHO configuration, the first CPAC configuration, and the frequency point to be measured of the candidate secondary node.
  • the frequency points to be measured of the candidate secondary nodes included in the CHO request response are all the frequency points to be measured of the candidate secondary nodes.
  • the CHO request response includes the identity of the candidate secondary node and/or the address for data forwarding.
  • the processing module 710 is also configured to determine the measurement gap configuration according to the frequency point to be measured of the candidate secondary node; the transceiving module 720 is also configured to send the measurement gap configuration to the source master node.
  • processing module 710 in the embodiment of the present application can be implemented by a processor or processor-related circuit components
  • transceiver module 720 can be implemented by a transceiver or transceiver-related circuit components or a communication interface.
  • FIG. 8 is a schematic block diagram of a communication device 800 provided by an embodiment of the present application.
  • the communication device 800 may be a source master node and can implement the functions of the source master node in the method provided by the embodiments of the present application.
  • the communication device 800 may also be a device that can support the source master node to implement the corresponding functions in the method provided by the embodiment of the present application, wherein the communication device 800 may be a chip system.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • the communication device 800 may also be a candidate master node and can realize the function of the first candidate master node in the method provided by the embodiment of the present application.
  • the communication device 800 may also be a device that can support the candidate master node to implement the corresponding function in the method provided by the embodiment of the present application, wherein the communication device 800 may be a chip system.
  • the chip system may be composed of chips, or may include chips and other discrete devices. For specific functions, please refer to the description in the above method embodiment.
  • the communication device 800 includes one or more processors 801, which can be used to implement or support the communication device 800 to implement the functions of the source master node in the method provided by the embodiment of the present application. For details, please refer to the detailed description in the method example and will not be repeated here.
  • One or more processors 801 may also be used to implement or support the communication device 800 in implementing the function of the first candidate master node in the method provided by the embodiments of this application. For details, please refer to the detailed description in the method example and will not be repeated here.
  • the processor 801 can also be called a processing unit or processing module, and can implement certain control functions.
  • the processor 801 may be a general-purpose processor or a special-purpose processor, or the like.
  • central processing unit For example, include: central processing unit, application processor, modem processor, graphics processor, image signal processor, digital signal processor, video codec processor, controller, memory, and/or neural network processor wait.
  • the central processing unit may be used to control the communication device 800, execute software programs and/or process data.
  • Different processors may be independent devices, or may be integrated in one or more processors, for example, integrated on one or more application specific integrated circuits.
  • the communication device 800 includes one or more memories 802 for storing instructions 804 that may be used in the processing is run on the server 801, so that the communication device 800 performs the method described in the above method embodiment.
  • the memory 802 and the processor 801 may be provided separately or integrated together, or the memory 802 and the processor 801 may be considered coupled.
  • the coupling in the embodiment of this 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 interaction between devices, units or modules.
  • Processor 801 may cooperate with memory 802. At least one of the at least one memory may be included in the processor. It should be noted that the memory 802 is not necessary, so it is illustrated with a dotted line in FIG. 8 .
  • the memory 802 may also store data.
  • the processor and memory can be provided separately or integrated together.
  • the memory 802 may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), etc., or it may be a volatile memory (volatile memory).
  • volatile memory volatile memory
  • RAM random-access memory
  • Memory is, but is not limited to, any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.
  • the memory in the embodiment of the present application can also be a circuit or any other device capable of realizing a storage function, used to store program instructions and/or data.
  • the communication device 800 may include instructions 803 (sometimes also referred to as codes or programs), and the instructions 803 may be run on the processor, so that the communication device 800 performs the method described in the above embodiments.
  • Data may be stored in processor 801.
  • the communication device 800 may also include a transceiver 805 and an antenna 806.
  • the transceiver 805 may be called a transceiver unit, transceiver module, transceiver, transceiver circuit, transceiver, input/output interface, etc., and is used to realize the transceiver function of the communication device 800 through the antenna 806.
  • the processor 801 and transceiver 805 described in this application can be implemented in integrated circuits (ICs), analog ICs, radio frequency identification (RFID), mixed signal ICs, ASICs, printed circuit boards (printed circuit boards) board, PCB), or electronic equipment, etc.
  • the communication device that implements the communication described in this article can be an independent device (for example, an independent integrated circuit, a mobile phone, etc.), or it can be a part of a larger device (for example, a module that can be embedded in other devices).
  • ICs integrated circuits
  • RFID radio frequency identification
  • ASICs integrated circuits
  • PCB printed circuit boards
  • the communication device that implements the communication described in this article can be an independent device (for example, an independent integrated circuit, a mobile phone, etc.), or it can be a part of a larger device (for example, a module that can be embedded in other devices).
  • the description of terminal equipment and network equipment will not be repeated here.
  • the communication device 800 may also include one or more of the following components: a wireless communication module, an audio module, an external memory interface, an internal memory, a universal serial bus (USB) interface, a power management module, and an antenna. Speakers, microphones, input and output modules, sensor modules, motors, cameras, or displays, etc. It can be understood that in some embodiments, the communication device 800 may include more or fewer components, or some components may be integrated, or some components may be separated. These components may be implemented in hardware, software, or a combination of software and hardware.
  • the communication device in the above embodiments may be the source master node (or the first candidate master node) or a circuit, or may be a chip applied in the source master node (or the first candidate master node) or Other combined devices, components, etc. with the above-mentioned source master node function (or first candidate master node).
  • the transceiver module may be a transceiver, which may include an antenna and a radio frequency circuit, etc.
  • the processing module may be a processor, such as a central processing unit (CPU) ).
  • the transceiver module may be a radio frequency unit, and the processing module may be a processor.
  • the communication device can be a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), or a system on chip (system on chip) , SoC), it can also be a CPU, it can be a network processor (network processor, NP), it can also be a digital signal processing circuit (digital signal processor, DSP), or it can be a microcontroller (micro controller unit, MCU) , it can also be a programmable logic device (PLD) or other integrated chip.
  • FPGA field programmable gate array
  • ASIC application specific integrated circuit
  • SoC system on chip
  • NP network processor
  • DSP digital signal processing circuit
  • MCU microcontroller
  • PLD programmable logic device
  • the processing module may be a processor of a chip system.
  • the transceiver module or communication interface may be the input/output interface or interface circuit of the chip system.
  • the interface circuit may be a code/data read and write interface circuit.
  • the interface circuit can be used to receive code instructions (code instructions are stored in the memory and can be read directly from the memory, or can also be read from the memory through other devices) and transmitted to the processor; the processor can be used to run all The code instructions are used to execute the methods in the above method embodiments.
  • the interface circuit may also be a signal transmission interface circuit between the communication processor and the transceiver.
  • the device may include a transceiver unit and a processing unit.
  • the transceiver unit may be an input-output circuit and/or a communication interface;
  • the processing unit may be an integrated processor or microprocessor or an integrated circuit.
  • Embodiments of the present application also provide a communication system.
  • the communication system includes a source master node, at least one candidate master node, at least one candidate auxiliary node, a source auxiliary node, and a terminal device.
  • the communication system includes a source master node, a first candidate master node, a first candidate auxiliary node, and a terminal device for implementing the relevant functions of one or more of the above-mentioned figures 2-6.
  • the relevant descriptions in the above method embodiments which will not be described again here.
  • Embodiments of the present application also provide a computer-readable storage medium, including instructions that, when run on a computer, cause the computer to Execute the method executed by the first candidate master node in one or more of the figures in Figures 2 to 6. Or, when it is run on the computer, the computer is caused to execute the method executed by the source master node in one or more of the figures in Figures 2-6.
  • An embodiment of the present application also provides a computer program product, which includes instructions that, when run on a computer, cause the computer to execute the method executed by the first candidate master node in one or more of the figures in Figures 2-6. Or, when it is run on the computer, the computer is caused to execute the method executed by the source master node in one or more of the figures in Figures 2-6.
  • Embodiments of the present application provide a chip system.
  • the chip system includes a processor and may also include a memory for implementing the function of the first candidate master node in the foregoing method; or for realizing the function of the source master node in the foregoing method.
  • the chip system can be composed of chips or include chips and other discrete devices.
  • the size of the sequence numbers of the above-mentioned processes does not mean the order of execution.
  • the execution order of each process should be determined by its functions and internal logic, and should not be used in the embodiments of the present application.
  • the implementation process constitutes any limitation.
  • the disclosed systems, devices and methods can be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or can be integrated into another system, or some features can be ignored, or not implemented.
  • the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, and the indirect coupling or communication connection of the devices or units may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the computer software product is stored in a storage medium and includes a number of instructions to enable a A computer device (which may be a personal computer, a server, or a network device, etc.) executes all or part of the steps of the methods described in various embodiments of this application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM), RAM, magnetic disk or optical disk and other media that can store program code.

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Abstract

一种测量配置方法及通信装置，该方法包括：源主节点向一个或多个候选主节点发送CHO请求，接收第一候选主节点发送的CHO请求响应，并向终端设备发送第一RRC配置消息。CHO请求响应包括CHO配置、第一CPAC配置和候选辅节点的待测频点。第一RRC配置消息包括CHO配置、第二CPAC配置和测量配置。测量配置包括测量对象和第一测量间隙配置。测量对象包括源主节点的待测频点、第一候选主节点的待测频点、辅主节点的待测频点和候选辅节点的待测频点。通过本申请该方法，终端设备被配置了CHO和CPAC时，在评估是否满足CHO的触发条件之外，还测量候选辅节点的待测频点，以更快速地完成CPAC，有利于终端设备接入更为合适的主小区及主辅小区。

Description

测量配置方法及通信装置
相关申请的交叉引用
本申请要求在2022年06月24日提交中国国家知识产权局、申请号为202210738508.6、申请名称为“测量配置方法及通信装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及小区切换技术领域，尤其涉及一种测量配置方法及通信装置。
背景技术
一个终端设备可以同时接入两个或两个以上节点。一个终端设备同时接入主节点(master node，MN)以及一个辅节点(secondary node，SN)，可称为双连接(dual-connectivity，DC)。一个终端设备同时接入MN以及至少两个SN，可称为多连接(multi-connectivity，MC)。在DC或MC中，MN与核心网有控制面信令连接。MN为终端设备提供主小区组(master cell group，MCG)，MCG中包含主小区(primary cell，PCell)。SN为终端设备提供辅小区组(secondary cell group，SCG)，SCG中包含主辅小区(primary secondary cell，PSCell)。
终端设备切换小区时，需要根据测量配置对待测频点(frequency to be measured)进行测量，以确定是否满足切换的执行触发条件。在终端设备被配置了条件切换(conditional handover，CHO)和条件主辅小区的增加和改变(conditional PSCell addition and change，CPAC)的情况下，终端设备需要判断有无候选MN满足CHO的执行触发条件，以及有无候选MN下的候选SN满足CPAC的执行触发条件。但MN仅考虑CHO的测量配置需求，未考虑CPAC的测量配置需求，导致终端设备可能只测量CPAC的待测量SN频点中的部分SN频点或者没有测量到CPAC的待测量SN频点，会减少CPAC触发的机会。
发明内容
本申请提供一种测量配置方法及通信装置，在终端设备被配置CHO和CPAC的情况下，增加CPAC的触发机会，从而更快速地完成CPAC。
第一方面，本申请实施例提供一种测量配置方法，该方法可由第一通信装置执行，第一通信装置可以是通信设备或能够支持通信设备实现该方法所需的功能的通信装置，例如芯片系统。下面以所述通信设备是源主节点为例进行描述。示例性地，所述第一通信装置为源主节点，或者为设置在源主节点中的芯片，或者为用于实现源主节点的功能的其他部件。
所述测量配置方法包括：源主节点向一个或多个候选主节点发送CHO请求，接收第一候选主节点发送的CHO请求响应，并向终端设备发送第一无线资源控制(radio resources control，RRC)配置消息。其中，第一候选主节点属于所述一个或多个候选主节点。CHO请求响应包括CHO配置、第一CPAC配置和候选辅节点的待测频点。第一RRC配置消息包括CHO配置、第二CPAC配置和测量配置。第二CPAC配置是基于第一CPAC配置确定的。测量配置包括测量对象和该测量对象对应的第一测量间隙(gap)配置。测量对象包括源主节点的待测频点、第一候选主节点的待测频点、辅主节点的待测频点和候选辅节点的待测频点。
该方法中，第一候选主节点为接收到来自源主节点的CHO请求的候选主节点。第一候选主节点接收到CHO请求之后，可向候选辅节点发起条件主辅小区的增加(conditional PSCell addition，CPA)请求或者发起条件主辅小区的改变(conditional PSCell change，CPC)请求，以获取候选辅节点的待测频点。第一候选主节点可将得到的候选辅节点的待测频点反馈给源主节点，从而后续源主节点可以根据源主节点的待测频点、候选主节点的待测频点、辅主节点的待测频点和候选辅节点的待测频点配置合适的测量对象以及测量间隙(gap)。通过该方法，终端设备在评估是否满足CHO的触发条件时，除了测量候选主节点的待测频点，还可以测量候选辅节点的待测频点，即还可以评估是否满足CPAC的触发条件，以增大CPAC的触发机会，帮助终端设备更快速地完成CPAC。且，有利于终端设备接入更为合适的小区，从而能够提高终端设备接入小区后的通信质量。
在可能的实现方式中，所述方法还包括：源主节点根据测量对象确定第一测量gap配置，并向源辅 节点发送第一测量gap配置和测量间隙类型，其中，测量间隙类型包括针对终端设备配置的测量类型或针对频率范围配置的测量间隙类型。测量gap，即终端设备停止与服务小区的通信，到测量邻区频点的持续时间。在测量gap内终端设备不会发送和接收数据，而是将接收机调至要测量的频点，进行频点的测量。测量gap结束，终端设备将接收机调至服务小区的频点。
该方法中，源主节点可以根据测量对象，例如源主节点的待测频点、候选主节点的待测频点、辅主节点的待测频点和候选辅节点的待测频点配置测量gap。即源主节点根据多种待测频点配置测量gap，以避免所配置的测量gap不足以测量部分待测频点，导致测量不到部分待测频点。另外，源主节点还可向源辅节点提供第一测量gap配置和测量gap类型，以辅助源辅节点根据第一测量gap配置和测量gap类型确定是否为终端设备配置gap，以及配置何种gap。例如，在演进的通用陆面无线接入与新空口双连接(E-UTRA NR dual connectivity，EN-DC)场景或下一代无线接入技术与演进的通用陆面无线接入双连接(next generation-RAN E-UTRA dual connectivity，NGEN-DC)场景中，第一测量gap配置为第一频率范围(frequency range，FR)的gap配置，测量gap类型为针对第一FR的测量gap类型，那么源辅节点还可以为终端设备配置另一个FR的gap测量，例如第二FR的gap测量。第一FR也称为FR1，第二FR也称为FR2。FR1的最低频率为450MHz，最高频率为6GHz；FR2的最低频率为24.25GHz，最高频率为52.6GHz。
在可能的实现方式中，CHO请求响应还包括第二测量gap配置，该第二测量gap配置是根据第一候选主节点的待测频点和候选辅节点的待测频点确定的。所述方法还包括：源主节点根据第二测量gap配置确定第一测量gap配置，并向源辅节点发送第一测量间隙配置和测量间隙类型，其中，测量间隙类型包括针对终端设备配置的测量类型或针对频率范围配置的测量间隙类型。第一候选主节点还可以根据第一候选主节点的待测频点和候选辅节点的待测频点配置gap，例如第二测量gap，并提供给源主节点。源主节点可根据第二测量gap为终端设备配置更为合适的gap。例如，第一测量gap大于第二测量gap，源主节点可为终端设备配置第一测量gap；相反，如果第二测量gap大于第一测量gap，那么源主节点可为终端设备配置第二测量gap，从而可以测量更多待测频点，以避免错过通信质量较好的待测频点的测量。
在可能的实现方式中，CHO请求响应还包括第三测量gap配置，该第三测量gap配置根据候选辅节点的待测频点中位于FR2内的频点配置的。如果第一候选主节点获得第三测量gap配置，可以提供给源主节点，从而由源主节点将第三测量gap配置提供给源辅节点，以辅助源辅节点向终端设备配置FR2的测量gap。
在可能的实现方式中，所述方法还包括：源主节点向源辅节点发送测量频点信息，该测量频点信息指示候选辅节点的待测频点中位于FR2内的频点。通过源主节点向源辅节点提供位于FR2内的待测频点，可使得源辅节点根据位于FR2内的待测频点向终端设备配置FR2的测量gap，以应用于更多场景的测量gap配置。例如，由源主节点负责位于FR1内的gap配置，辅节点可负责位于FR2内的gap配置，从而源主节点和源辅节点可以协商完成gap的配置，以实现EN-DC场景和NGEN-DC场景中的测量gap的配置。
在可能的实现方式中，所述方法还包括：源主节点根据候选辅节点的待测频点确定第四测量gap配置，其中，候选辅节点的待测频点为位于FR1内的频点。
在可能的实现方式中，CHO请求响应包括候选辅节点的标识和/或数据转发地址。即第一候选主节点可将候选辅节点的标识和/或数据转发地址提供给源主节点。源主节点在通知源辅节点执行数据转发时，向源辅节点提供候选辅节点的标识和/或数据转发地址。从而源辅节点根据候选辅节点的标识和/或数据转发地址向候选辅节点转发数据，可实现CPAC下的数据直接转发。
在可能的实现方式中，第一RRC配置消息具有如下的三种实现形式，具体使用何种实现形式，本申请实施例不作限制。
实现形式一，第一RRC配置消息包括第二RRC配置消息和与第一候选主节点对应的第一执行触发条件。第二RRC配置消息包括第一候选主节点的无线空口配置，以及，候选PSCell对应的第二执行触发条件，且第一RRC配置消息中除第二RRC配置消息之外的信元中还包括候选PSCell的标识信息和候选PSCell对应的第二执行触发条件。其中，候选PSCell由候选辅节点管理。第一执行触发条件为CHO的执行触发条件，也就是，终端设备切换到第一候选主节点管理的PCell需要满足的触发条件。终端设备满足一个PCell对应的第一执行触发条件，才触发切换到该PCell的流程。类似地，第二执行触发条 件为CPAC的执行触发条件，也就是，终端设备切换到候选辅节点管理的PSCell需要满足的触发条件。终端设备满足一个PSCell对应的第二执行触发条件，才触发切换到该PSCell的流程。采用实现方式一，终端设备在评估CHO的执行触发条件和CPAC的执行触发条件时，从第一RRC配置消息获取第二执行触发条件即可，无需解析第二RRC配置消息。如果CHO被触发，但是CPAC未被触发，终端设备执行主小区切换成功后，可删除第一RRC配置消息中针对第一执行触发条件的配置，即仅保留第二RRC配置消息，从而后续可按照现有CPAC配置进行CPAC评估。
实现形式二，第一RRC配置消息包括第二RRC配置消息和与第一候选主节点对应的第一执行触发条件；其中，第二RRC配置消息包括第一候选主节点的无线空口配置，以及，候选PSCell对应的第二执行触发条件，且第一RRC配置消息中除第二配置RRC消息之外的信元中不包括候选PSCell的标识信息和候选PSCell对应的第二执行触发条件。候选PSCell由候选辅节点管理。采用实现方式二，如果CHO被触发，但是CPAC未被触发，终端设备执行主小区切换成功后，可只保留第二RRC配置消息，无需保留第一RRC配置消息中针对第一执行触发条件的配置，后续可按照现有CPAC配置进行CPAC评估。
实现形式三，第一RRC配置消息包括第二RRC配置消息与第一候选主节点对应的第一执行触发条件；其中，第二RRC配置消息包括第一候选主节点的无线空口配置、候选辅节点的无线空口配置，且第二RRC配置消息不包括候选PSCell对应的第二执行触发条件，且，第一RRC配置消息中除第二RRC配置消息之外的信元中还包括候选PSCell的标识信息和候选PSCell对应的第二执行触发条件。候选PSCell由候选辅节点管理。采用实现形式三，终端设备评估CHO的执行触发条件和CPAC的执行触发条件，从第一RRC配置消息获取第二执行触发条件即可，无需解析第二RRC配置消息。
第二方面，本申请实施例提供一种测量配置方法，该方法可由第二通信装置执行，第二通信装置可以是通信设备或能够支持通信设备实现该方法所需的功能的通信装置，例如芯片系统。下面以所述通信设备是候选主节点为例进行描述。示例性地，所述第二通信装置为候选主节点，或者为设置在候选主节点中的芯片，或者为用于实现候选主节点的功能的其他部件。
所述测量配置方法包括：候选主节点接收源主节点发送的CHO请求，并向源主节点发送CHO请求响应。该CHO请求响应包括CHO配置、第一CPAC配置和候选辅节点的待测频点。
在可能的实现方式中，所述方法还包括：候选主节点向候选辅节点发送CPA请求，并接收候选辅节点发送的CPA请求响应；或者候选主节点向候选辅节点发送CPC请求，并接收候选辅节点发送的CPC请求响应。其中，CPA请求响应或CPC请求响应包括候选辅节点的待测频点。
在可能的实现方式中，CHO请求响应包括的候选辅节点的待测频点为候选辅节点的所有待测频点。
在可能的实现方式中，CHO请求响应包括所述候选辅节点的标识和/或数据转发地址。
在可能的实现方式中，所述方法还包括：候选主节点根据候选辅节点的待测频点确定测量间隙配置，向源主节点发送该测量间隙配置。
关于第二方面以及第二方面的各个可能的实施方式所带来的技术效果，可以参考对第一方面以及第一方面的各个可能的实施方式的技术效果的介绍。
第三方面，本申请实施例提供了一种通信装置，所述通信装置具有实现上述第一方面至第二方面中任意一方面方法实施例中行为的功能，有益效果可以参见第一方面至第二方面的描述，此处不再赘述。
该通信装置可以是接入网设备，用于执行第一方面中的源主节点执行的方法，或者该通信装置可以是能够实现第一方面提供的方法的装置，例如芯片或芯片系统。在一个可能的设计中，该通信装置包括用于执行第一方面的方法的相应手段(means)或模块。例如，所述通信装置：包括处理单元(有时也称为处理模块或处理器)和/或收发单元(有时也称为收发模块或收发器)。收发单元可包括发送单元和接收单元，也可以理解为，发送单元和接收单元是同一个功能模块。或者，收发单元也理解为是发送单元和接收单元的统称，发送单元和接收单元可以是不同的功能模块。这些单元(模块)可以执行上述第一方面方法示例中的相应功能，具体参见方法示例中的详细描述，此处不做赘述。
该通信装置可以是接入网设备，用于执行第二方面中的候选主节点执行的方法，或者该通信装置可以是能够实现第二方面提供的方法的装置，例如芯片或芯片系统。在一个可能的设计中，该通信装置包括用于执行第二方面的方法的相应手段(means)或模块。例如，所述通信装置：包括处理单元(有时也称为处理模块或处理器)和/或收发单元(有时也称为收发模块或收发器)。收发单元可包括发送单元和接收单元，也可以理解为，发送单元和接收单元是同一个功能模块。或者，收发单元也理解为是发送 单元和接收单元的统称，发送单元和接收单元可以是不同的功能模块。这些单元(模块)可以执行上述第二方面方法示例中的相应功能，具体参见方法示例中的详细描述，此处不做赘述。
第四方面，本申请实施例提供一种通信装置，该通信装置可以执行第一方面至第二方面中的任意一个方面中所述的方法。该通信装置包括通信接口以及处理器，可选的，还包括存储器。其中，该存储器用于存储计算机程序，处理器与存储器、通信接口耦合，当处理器读取所述计算机程序或指令时，使通信装置执行上述方法中由源主节点或候选主节点所执行的方法。
第五方面，本申请实施例提供了一种通信装置，该通信装置包括输入输出接口和逻辑电路。输入输出接口用于输入和/或输出信息。逻辑电路用于执行第一方面至第二方面中的任意一个方面中所述的方法。
第六方面，本申请实施例提供了一种芯片系统，该芯片系统包括处理器，还可以包括存储器和/或通信接口，用于实现第一方面至第二方面中的任意一个方面中所述的方法。在一种可能的实现方式中，所述芯片系统还包括存储器，用于保存计算机程序。该芯片系统可以由芯片构成，也可以包含芯片和其他分立器件。
第七方面，本申请实施例提供了一种通信系统，所述通信系统包括源主节点、候选主节点和终端设备，其中，源主节点用于执行上述第一方面中由源主节点所执行的方法，候选主节点用于执行上述第二方面中由候选主节点所执行的方法。当然，所述通信系统可以包括更多节点，例如源辅节点、候选辅节点等等。
第八方面，本申请提供了一种计算机可读存储介质，该计算机可读存储介质存储有计算机程序，当该计算机程序被运行时，实现上述第一方面至第二方面中任意一方面的方法。
第九方面，提供了一种计算机程序产品，所述计算机程序产品包括：计算机程序代码，当所述计算机程序代码被运行时，使得上述第一方面至第二方面中任意一方面的方法被执行。
上述第三方面至第九方面及其实现方式的有益效果可以参考对第一方面至第二方面及其实现方式的有益效果的描述。
附图说明
图1为本申请实施例适用的通信系统的示意图；
图2为本申请实施例提供的测量配置方法的流程示意图；
图3为本申请实施例提供的第一示例的测量配置方法的流程示意图；
图4为本申请实施例提供的第二示例的测量配置方法的流程示意图；
图5为本申请实施例提供的第三示例的测量配置方法的流程示意图；
图6为本申请实施例提供的第四示例的测量配置方法的流程示意图；
图7为本申请实施例提供的通信装置的一种示意框图；
图8为本申请实施例提供的通信装置的另一种示意框图。
具体实施方式
本申请的实施例提供的技术方案可以应用于新无线(new radio，NR)移动通信系统、或者应用于长期演进(long term evolution，LTE)移动通信系统中，或者还可以应用于其他下一代移动通信系统，例如第6代(the sixth generation，6G)通信系统，或者其他类似的通信系统中。本申请的实施例提供的技术方案也可以应用于物联网(internet of things，IoT)系统、车到万物(vehicle to everything，V2X)系统等。
在本申请实施例中，一个终端设备可与多个网络设备进行通信。其中，一个网络设备为主网络设备，另外的网络设备为辅网络设备。主网络设备为与核心网有控制面信令交互的网络设备。终端设备与主网络设备存在通信连接。终端设备可以与多个辅网络设备中的部分辅网络设备建立通信连接，也可以与多个辅网络设备中的全部辅网络设备建立通信连接。其中，主网络设备和辅网络设备都具有无线资源控制(radio resources control，RRC)实体，可以产生RRC消息(例如，小区测量消息等)。辅网络设备可以直接把辅网络设备生成的RRC消息发送给终端设备，相应的，终端设备也可以将生成的RRC消息直接发送给辅网络设备。或者，辅网络设备也可以将生成的RRC消息发送给主网络设备，由主网络设备再发送给终端设备。相应的，终端设备把要发送给辅网络设备的RRC消息发送给主网络设备，由主网络设备再 把该RRC消息转发给辅网络设备。
作为一种示例，本申请实施例可以应用于DC场景或MC场景。DC指的是一个终端设备同时接入到两个网络设备，这两个网络设备中的一个网络设备为主网络设备，另一个网络设备为辅网络设备。MC指的是一个终端设备同时接入到至少三个网络设备，至少三个网络设备中的一个网络设备为主网络设备，其余网络设备为辅网络设备。
请参见图1，为本申请实施例适用的DC场景的架构图。图1以包括终端设备和两个网络设备(即第一网络设备和第二网络设备)为例。其中，第一网络设备为主网络设备，也就是MN，第二网络设备为辅网络设备，也就是SN。第一网络设备和第二网络设备可以是属于同一无线接入技术(radio access technology，RAT)的网络设备。例如，第一网络设备和第二网络设备均为LTE基站或者NR基站。或者，第一网络设备和第二网络设备也可以是属于不同RAT的网络设备，例如，第一网络设备为LTE基站，第二网络设备为NR基站。因为LTE系统可以是演进的通用陆面无线接入(evolved universal terrestrial radio access，E-UTRA)系统，所以终端设备同时接入LTE基站和NR基站的接入方式也被称为EN-DC。EN-DC也就是与4G核心网对接的4G无线接入网与5G NR的双连接。在EN-DC模式下，MN为连接到分组核心网(evolved packet core，EPC)的LTE基站，SN为NR基站。在另一个DC场景中，终端设备支持新空口与演进的通用陆面无线接入双连接(NR E-UTRA dual connectivity，NE-DC)，该场景中，MN为连接到5G核心网(5G core，5GC)的NR基站，SN为LTE基站。对于MN和SN使用不同RAT的DC模式可以统称为多无线接入技术双连接(Multi-RAT dual connectivity，MR-DC)。MR-DC具有不同类型，例如EN-DC，或者，下一代无线接入技术与演进的通用陆面无线接入双连接(next generation-RAN E-UTRA dual connectivity，NGEN-DC)，也就是，与5G核心网对接的4G无线接入网与5G NR的双连接。另外，在又一个DC场景中，对于仅支持NR的终端设备来说，该终端设备可以同时接入两个不同的NR的网络设备，这类连接方式称为NR-DC。NR-DC中，MN为连接到5GC的NR基站，SN为另一NR基站。
以图1为例，在同时部署NR系统和LTE系统的情况下，第一网络设备为LTE基站，第二网络设备为NR基站。需要说明的是，图1以DC的网络架构为例，图1中的终端设备的数量只是举例，还可以更多或者更少。网络设备的数量也只是举例，还可以更多或者更少。图1所述的通信系统还可以包括更多种设备，例如一个或多个核心网设备，例如，LTE的核心网设备，NR的核心网设备。可以理解的是，LTE的核心网设备可以与LTE的网络设备通信。NR的核心网设备可以与NR的网络设备和/或LTE的网络设备通信。本申请实施例中，将终端设备所连接的主节点(即为终端设备提供服务的节点)称为源主节点(source MN，S-MN)。相对来说，其他主节点，可以理解为是候选主节点(candidate MN，C-MN)，C-MN可以有一个或多个。将终端设备所连接的辅节点称为源辅节点(source SN，S-SN)。相对来说，其他辅节点是候选辅节点(candidate SN，C-SN)，C-SN可以有一个或多个。“源主节点”和“源基站”、“源网络设备”是同一概念，如无特殊说明，可替换。“源辅节点”和“源辅基站”、“源辅网络设备”是同一概念，如无特殊说明，可替换。“候选主节点”和“候选主基站”、“候选主网络设备”是同一概念，如无特殊说明，可替换。“候选辅节点”和“候选辅基站”、“候选辅网络设备”是同一概念，如无特殊说明，可替换。
由MN为终端设备提供服务的一个或多个小区(cell)称为MCG。当MCG中仅有一个小区，该小区为终端设备的PCell。一个MN可提供一个或多个MCG。由SN为终端设备提供服务的一个或多个小区称为SCG。当SCG中仅有一个小区，该小区为终端设备的PSCell。一个SN可提供一个或多个SCG。在5G系统中，PCell和PSCell可以统称为特别小区(special sell，SpCell)。当一个MCG或一个SCG包含多个小区时，MCG和SCG各有一个小区为SpCell，除了SpCell之外的小区均称为辅小区(secondary cell，SCell)。此时，各个小区组中的SCell与SpCell进行载波聚合，共同为终端设备提供服务。
PCell，是指工作在主频点(或者主载波)上的小区。终端设备在PCell发起初始连接建立过程或发起连接重建过程。在切换过程中，PCell被指示为主小区。
PSCell，也可以称为主SCG小区(primary SCG cell)，属于SCG的小区。PSCell可包括终端设备被指示进行随机接入或者初始物理上行共享信道(physical uplink shared channel，PUSCH)传输的小区。例如，进行SCG改变流程时省略了随机接入过程时的小区。PSCell也包括终端设备在辅网络设备发起随机接入过程的小区，或者，当终端设备在辅网络设备改变过程中跳过随机接入过程发起数据传输的小区，或者执行同步的重配过程中发起随机接入的辅网络设备的小区。
辅小区(secondary cell，SCell)，是指工作在辅载波上的小区。一旦RRC连接建立，SCell就可能被 配置以提供额外的无线资源。在DC架构中，MCG和SCG中除主小区之外的小区，均可称为SCell。
服务小区(serving cell)，可指代主小区，也可指代辅小区，终端设备的主小区和所有辅小区组成了该终端设备的服务小区集合。处于RRC连接态(RRC_CONNECTED)态的终端设备，如果没有配置载波聚合(carrier aggregation，CA)和/或DC，那么仅有一个服务小区，即PCell；如果配置了CA和/或DC，则服务小区集合是由主小区和辅小区组成。每个载波(component carrier，CC)对应一个独立的小区。
在本申请实施例中，网络设备可以是终端设备通过无线方式接入到移动通信系统中的接入设备，例如基站等接入网(access network，AN)设备。网络设备也可以是指在空口与终端设备通信的设备。网络设备可以包括LTE系统或高级长期演进(long term evolution-advanced，LTE-A)中的演进型基站(evolved Node B，eNB或e-NodeB)；网络设备也可以包括NR系统中的下一代节点B(next generation node B，gNB)；或者，网络设备也可以包括无线保真(wireless-fidelity，Wi-Fi)系统中的接入节点等；或者，网络设备可以为站点(station)、中继站、车载设备以及未来演进的公共陆地移动网络(Public Land Mobile Network，PLMN)设备、设备到设备(device to device，D2D)网络中的设备、机器到机器(machine to machine，M2M)网络中的设备、IoT网络中的设备、无人机设备等。在V2X系统中的接入网设备可以为路侧单元(road side unit，RSU)。本申请的实施例对网络设备所采用的具体技术和具体设备形态不做限定。
另外，本申请实施例中的基站可以包括集中式单元(centralized unit，CU)和分布式单元(distributed unit，DU)，多个DU可以由一个CU集中控制。CU和DU可以根据其具备的无线网络的协议层功能进行划分，例如分组数据汇聚协议(packet data convergence protocol，PDCP)层及以上协议层的功能设置在CU，PDCP以下的协议层，例如无线链路控制(radio link control，RLC)层和介质访问控制(medium access control，MAC)层等的功能设置在DU。需要说明的是，这种协议层的划分仅仅是一种举例，还可以在其它协议层划分。射频装置可以拉远，不放在DU中，也可以集成在DU中，或者部分拉远部分集成在DU中，本申请实施例不作任何限制。另外，在一些实施例中，还可以将CU的控制面(control plan，CP)和用户面(user plan，UP)分离，分成不同实体来实现，分别为控制面CU实体(CU-CP实体)和用户面CU实体(CU-UP实体)。CU的控制面CU-CP还包括一种进一步切分的架构，即把现有的CU-CP进一步切分为CU-CP1和CU-CP2。其中CU-CP1包括各种无线资源管理功能，CU-CP2仅包括RRC功能和PDCP-C功能(即控制面信令在PDCP层的基本功能)。在该网络架构中，CU产生的信令可以通过DU发送给终端设备，或者终端设备产生的信令可以通过DU发送给CU。DU可以不对该信令进行解析而直接通过协议层封装而透传给终端设备或CU。
在本申请实施例中，终端设备是一种具有无线收发功能的设备，可以向网络设备发送信号，或接收来自网络设备的信号。终端设备可包括用户设备(user equipment，UE)，有时也称为终端、接入站、UE站、远方站、无线通信设备、或用户装置等等。所述终端设备用于连接人，物，机器等，可广泛用于各种场景，例如包括但不限于以下场景：蜂窝通信、D2D、V2X、机器到机器/机器类通信(machine-to-machine/machine-type communications，M2M/MTC)、IoT、虚拟现实(virtual reality，VR)、增强现实(augmented reality，AR)、工业控制(industrial control)、无人驾驶(self driving)、远程医疗(remote medical)、智能电网(smart grid)、智能家具、智能办公、智能穿戴、智能交通、智慧城市(smart city)、无人机、机器人等场景中的终端设备。例如，所述终端设备可以是手机(mobile phone)、平板电脑(Pad)、带无线收发功能的电脑、VR终端、或AR终端等等。作为示例而非限定，在本申请的实施例中，终端设备还可以是可穿戴设备。如上介绍的各种终端设备，如果位于车辆上(例如放置在车辆内或安装在车辆内)，都可以认为是车载终端设备。车载终端设备也称为车载单元(on-board unit，OBU)。本申请的终端设备还可以是作为一个或多个部件或者单元而内置于车辆的车载模块、车载模组、车载部件、车载芯片或者车载单元。车辆通过内置的所述终端设备可以实施本申请的方法。
本申请实施例中，用于实现网络设备或终端设备功能的通信装置可以是网络设备或终端设备本身，也可以是能够支持网络设备或终端设备实现该功能的装置，例如芯片系统，该装置可以被安装在网络设备或终端设备中。在本申请实施例提供的技术方案中，以用于实现网络设备的功能的装置是基站，以及，以用于实现终端设备的功能的装置是UE为例，描述本申请实施例提供的技术方案。
本申请实施例中，对于名词的数目，除非特别说明，表示“单数名词或复数名词”，即"一个或多个”。“至少一个”是指一个或者多个，“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示 可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B的情况，其中A,B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系。例如，A/B，表示：A或B。“以下至少一项(个)”或其类似表达，是指的这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a,b,或c中的至少一项(个)，表示：a,b,c,a和b,a和c,b和c,或a和b和c，其中a,b,c可以是单个，也可以是多个。
本申请实施例提及“第一”、“第二”等序数词是用于对多个对象进行区分，不用于限定多个对象的大小、内容、顺序、时序、应用场景、优先级或者重要程度等。例如，第一测量gap配置和第二测量gap配置，可以是同一个测量gap配置，也可以是不同的测量gap，且，这种名称也并不是表示这两种测量gap的长度、优先级、应用场景或者重要程度等的不同。
本申请实施例主要涉及DC场景下小区切换以及小区测量配置相关技术。为了更好地理解本申请实施例提供的方案，下面介绍关于小区切换以及小区测量配置的相关内容。
首先介绍小区切换的相关内容。
1)CHO，基于条件的小区切换机制。CHO中，源小区所属的源基站向UE发送至少一个候选小区的CHO配置信息，该CHO配置信息包括候选小区的信息和CHO的执行触发条件。CHO的执行触发条件，可以理解为，UE进行小区切换的触发条件，也称为CHO触发条件、CHO执行条件、执行条件或触发条件。各个候选小区被配置一个或多个CHO的执行触发条件。候选小区的信息可用于指示候选小区，例如包括候选小区全球小区标识(cell global identifier，CGI)，或者包括候选小区的物理小区标识(physical cell identifier，PCI)以及候选小区对应的频率信息。UE接收到CHO配置信息，对该CHO配置信息指示的候选小区进行测量，当某个候选小区的信号质量满足执行触发条件，则将该候选小区确定为目标小区。目标小区即UE要切换到的小区。之后，UE向目标小区发起接入。
2)主辅小区的增加和改变(PSCell addition and change，PAC)，包括由MN触发的PSCell增加，以及由MN或SN触发的PSCell改变。其中，PSCell的改变指的是由于UE的移动性，引起的UE接入的PSCell的切换。例如，MN(或SN)基于UE的测量结果确定一个PSCell的信号质量变差，而另一个PSCell的信号质量变好，MN(或SN)通知UE进行PSCell改变。PSCell改变可以是从一个SN的小区切换到另外一个SN的小区，也可以是从一个SN的小区切换到该SN的另外一个小区。
3)CPAC，指CHO技术与PAC技术的结合，也就是将CHO技术用于PSCell的增加/改变中。与CHO类似，CPAC中，触发节点(MN或SN)也会向UE发送CPAC配置，该CPAC配置包括小区切换的执行触发条件和候选PSCell的信息以及小区测量的配置信息。UE接收CPAC配置，如果发现某个候选小区满足执行触发条件，也就是触发了CPAC，那么以该候选小区作为目标小区，进行PSCell的增加/改变流程。
下面介绍小区的测量配置的相关内容。
网络设备向UE发送测量配置，UE根据该测量配置对候选小区进行测量。UE在测量结果满足一定条件，触发测量事件的上报，也就是向网络设备上报测量结果。网络设备在接收到UE上报的测量结果后，可以向UE发送切换命令，指示UE将从一个小区切换到另一个小区。如果网络设备配置了CHO，UE在测量结果满足一定触发条件，则进行小区切换流程。如果网络设备配置了CPAC，UE在测量结果满足一定触发条件，则进行PSCell切换流程。
测量配置可包括如下的一种或多种配置：测量对象(measurement objects)、测量间隙(measurement gap)、报告配置(reporting configurations)、触发量(triggering quantity)或测量ID(measurement identities)等。
测量对象即为UE执行测量的对象，包括同步信号和物理广播信道块(synchronization signal and PBCH block，SSB)、SSB子载波间隔、基于SSB的测量定时配置(SSB-based measurement timing configuration，SMTC)、白名单小区或黑名单小区等。
测量gap，可以理解为，UE将接收机从当前频点调至测量待测频点(例如邻区频点)的持续时间。在测量gap内UE不会发送和接收数据，而是将接收机调至待测频点，进行测量。测量gap结束，UE将接收机调至服务小区的频点。例如，对于连接态的异频和/或异系统邻区测量，UE在测量gap内停止服务小区上的信号收发，将接收机调整至异频或异系统频点上，接收并测量异频或异系统邻区的信号。网络设备可以通过RRC信令为UE配置测量gap。
报告配置，指的是UE被触发上报测量报告的标准和测量报告的格式。触发量是触发事件上报的策略。测量ID指测量对象和报告配置组成的集合。
本申请实施例中，测量gap的配置涉及两个FR，FR1和FR2。FR1包括LTE系统和NR系统支持的FR。FR2相对FR1来说是高频，可认为是NR系统支持的FR。FR1中的最低频率大于或等于450MHz，FR1中的最高频率小于或等于6GHz。FR2中的最低频率大于或等于24.25GHz，FR2中的最高频率小于或等于52.6GHz。测量gap的配置还涉及两种测量gap类型，其中一种类型是针对UE配置的，这种类型的gap也称为per-UE gap；另一种类型是针对FR配置的，这种类型的gap也称为per-FR gap。per-UE gap适用于FR1和FR2。per-FR gap指分别为FR1和FR2配置两个独立的gap模式，即FR1gap和FR2gap。
根据UE支持独立FR测量的能力和网络偏好，可以配置per-UE gap或per-FR gap。如果配置per-UE gap，那么MN决定gap模式和相关的gap共享配置。如果配置per-FR gap，根据连接场景的不同，测量gap的配置也有所不同。下面就列举的几种连接场景，具体介绍。
在EN-DC和NGEN-DC中，MN决定FR1gap模式和FR1的相关gap共享配置，而SN决定FR2gap模式和FR2的相关gap共享配置；在NE-DC和NR-DC中，MN决定FR1和FR2的gap模式以及相关的gap共享配置。
在EN-DC和NGEN-DC中，从MN到UE的测量gap配置会指示来自MN的配置是per-UE gap配置还是FR1gap配置。也可以理解为，MN会向UE提供测量gap的类型。另外，MN还向SN指示所配置的测量gap(per-UE测量gap或FR1测量gap)和测量gap的类型。MN和SN之间可以交换测量gap配置的辅助信息。针对per-UE gap的情况，SN可向MN指示UE待测量的FR1中配置的SN频率列表和FR2中配置的SN频率列表。即对于MN来说，测量gap配置的辅助信息包括来自SN的UE待测量的FR1中配置的SN频率列表和UE待测量的FR2中配置的SN频率列表。针对per-FR gap的情况，SN可向MN指示UE待测量的FR1中配置的SN频率列表，MN向SN指示UE待测量的FR2中配置的MN频率列表。即对于MN来说，测量gap配置的辅助信息包括来自SN的UE待测量的FR1中配置的SN频率列表。即对于SN来说，测量gap配置的辅助信息包括来自MN的UE待测量的FR2中配置的SN频率列表。
可以理解的是，在NE-DC中，MN也会向SN指示配置的per-UE测量gap或FR1测量gap。SN可以向MN反馈gap确认，如果SN被配置了per-FR测量gap，该gap确认不包括任何频率列表。在NR-DC中，MN可向SN指示配置的per-UE测量gap、FR1测量gap或FR2测量gap以及测量gap类型。SN可以向MN指示UE待测量的FR1中配置的SN频率列表和UE待测量的FR2中配置的SN频率列表。
在不同的场景下，测量对象包括的内容也有所不同。例如，网络设备配置CHO，CHO是针对MN下的PCell的切换。UE进行CHO评估(即评估是否满足CHO的触发条件)时使用的测量配置是由源MN(即提供当前服务小区的基站)发送的。这种情况下，测量对象包括源MN的待测频点和源MN确定的候选MN的待测频点。在另一种可能的场景中，网络设备配置了CHO和CPAC。CPAC是针对SN下PSCell的增加或改变。源MN为UE配置CHO，针对多个候选PCell，可以提供与每个候选PCell对应的PSCell相关配置。如果一个候选PCell触发了CHO切换，则UE就尝试接入该候选PCell，并且该PCell下的PSCell也满足CPAC触发条件，UE还尝试进行PSCell的改变。举例来说，以存在两个候选主小区(例如PCell 1和PCell 2)为例，与PCell 1对应的PSCell包括PSCell 1、PSCell 2和PSCell 3。与PCell 2对应的PSCell包括PSCell 4和PSCell 5。网络设备既配置CHO，又配置CPAC，相应的，网络设备配置的CHO和CPAC的候选小区的具体关系可为：CHO PCell 1+{CPAC PSCell 1，CPAC PSCell2，CPAC PSCell 3}；CHO PCell 2+{CPAC PSCell 4，CPAC PSCell 5}。如果PCell 1满足CHO的执行触发条件，UE尝试接入PCell 1。如果PCell 1下的PSCell 3满足CPAC的执行触发条件，UE还尝试PSCell的改变。可以理解的是，满足小区切换的触发条件，可能是PCell 1满足CHO的执行触发条件，也可能是PCell 1对应的PSCell满足CPAC的执行触发条件，例如Pcell 1与PSCell 3都满足执行触发条件。不会出现PSCell满足CPAC的执行触发条件，而PCell不满足CHO的执行触发条件的情况。
如果MN配置了CHO和CPAC，UE需要持续判断有无候选MN满足CHO的执行触发条件，以及有无候选MN确定的候选SN满足CPAC的执行触发条件。然而，MN仅考虑CHO的测量配置需求，未考虑CPAC的测量配置需求，也就是，MN向UE发送的测量配置所包括的测量对象没有考虑候选SN 的待测频点。这样UE可能只测量到候选SN频点中的部分频点，例如，UE测量到SN的待测频点中与MN重叠的待测频点；甚至UE测量不到候选SN的待测频点，例如，如果SN的待测频点和MN的待测频点不重叠，从而减少了CPAC触发的机会，即减少了UE接入PSCell的机会。另外，由于MN没有考虑候选SN的待测频点，MN所配置的测量gap可能不合理，会影响UE的测量性能。
在本申请实施例中，在MN配置CHO和CPAC的情况下，候选MN可以向源MN提供候选SN的测量频点，从而源MN可根据候选SN的测量频点为UE配置合理的测量对象，例如源MN所配置的测量对象包括候选SN的测量频点。这样UE在评估是否满足CHO的执行触发条件时，除了测量候选MN的待测频点，还测量候选SN的待测频点，即评估是否满足CHO的执行触发条件时，还评估CPAC的执行触发条件，可增大CPAC的触发机会，帮助UE更快速地完成CPAC。且，有利于UE接入更为合适的小区，从而能够提高UE接入小区后的通信质量。另外，源MN也可以结合候选SN的待测频点配置测量gap，以尽量降低对UE测量性能的影响。
下面结合附图介绍本申请实施例提供的技术方案。
本申请实施例提供了一种测量配置方法，该方法可应用于DC或MC场景中，例如，应用于图1中的DC场景。且，该方法适用于网络设备配置CHO和CPAC的情况。可以理解的是，如果UE切换PCell，可能切换到S-MN提供的另一个PCell，也能切换到C-MN提供的PCell。类似地，如果UE切换PSCell，可能切换到S-SN提供的另一个PSCell，也能切换到C-SN提供的PSCell。
请参见图2，为本申请实施例提供的测量配置方法的流程示意图。在下文的描述中，将源主节点记为S-MN，源辅节点记为S-SN，候选主节点记为C-MN，候选辅节点记为S-SN，UE以UE为例。
S201、S-MN向一个或多个C-MN发送CHO请求，相应的，所述一个或多个C-MN接收S-MN发送的CHO请求。
S-MN可向各个C-MN分别发送CHO请求。
S202、第一C-MN向一个或多个C-SN发送CPA请求或CPC请求，相应的，所述一个或多个C-SN接收第一C-MN发送的CPA请求或CPC请求。
应理解，第一C-MN确定存在S-SN，那么第一C-MN向一个或多个C-SN发送CPC请求；如果第一C-MN确定不存在S-SN，那么第一C-MN向一个或多个C-SN发送CPA请求。或者，第一C-MN默认向一个或多个C-SN发送CPA请求，即无论S-SN是否存在，第一C-MN都向一个或多个C-SN发送CPA请求。
第一C-MN为接收到CHO请求的C-MN，应理解，第一C-MN属于所述一个或多个C-MN。如果有一个C-MN接收到CHO请求，那么第一C-MN为该C-MN；如果有多个C-MN接收到CHO请求，那么第一C-MN为多个C-MN中的一个或多个C-MN。第一C-MN接收到CHO请求之后，可向第一C-MN所确定的C-SN发送CPA请求。一个C-MN可以确定一个或多个C-SN。
S203、第一C-SN向第一C-MN发送CPA请求响应，相应的，第一C-MN接收第一C-SN发送的CPA请求响应。
在另一个示例中，S203可以替代为：第一C-SN向第一C-MN发送CPC请求响应，相应的，第一C-MN接收第一C-SN发送的CPC请求响应。
应理解，第一C-MN向一个或多个C-SN发送CPA请求/CPC请求，第一C-MN接收第一C-SN发送的CPA请求响应/CPC请求响应。第一C-SN为接收到CPA请求/CPC请求的C-SN。第一C-MN向一个或多个C-SN发送CPC请求/CPC请求，第一C-MN接收第一C-SN发送的CPC请求响应/CPC请求响应。第一C-SN为接收到CPC请求/CPC请求的C-SN。
以第一C-MN向一个或多个C-SN发送CPA请求为例，如果有一个C-SN接收到CPA请求，那么第一C-SN为该C-SN；如果有多个C-SN接收到CPA请求，那么第一C-SN为多个C-SN中的一个或多个C-SN。第一C-SN接收到CPA请求之后，可向第一C-MN发送CPA请求响应。该CPA请求响应包括第一C-SN的频点信息，例如第一C-SN的待测频点。应理解，多个收到CPA请求的C-SN可以分别向第一C-MN发送CPA请求响应，任意一个C-SN发送的CPA请求响应包括该C-SN的待测频点。类似地，第一C-MN向一个或多个C-SN发送CPC请求，如果有一个C-SN接收到CPC请求，那么第一C-SN为该C-SN；如果有多个C-SN接收到CPC请求，那么第一C-SN为多个C-SN中的一个或多个C-SN。第一C-SN接收到CPC请求之后，可向第一C-MN发送CPC请求响应。该CPC请求响应包括第一C-SN的频点信息，例如第一C-SN的待测频点。应理解，多个收到CPC请求的C-SN可以分别向 第一C-MN发送CPC请求响应，任意一个C-SN发送的CPC请求响应包括该C-SN的待测频点。
S204、第一C-MN向S-MN发送CHO请求响应，相应的，S-MN接收第一C-MN发送的CHO请求响应。
第一C-MN接收第一C-SN发送的CPA请求响应之后，可生成第一C-MN的RRC配置消息。第一C-MN的RRC配置消息可包括与第一C-MN相关的RRC配置信息(也称为MN-RRC配置消息)、针对第一C-SN管理的PSCell的CPAC配置(例如称为第一CPAC配置)。第一CPAC配置包括与第一C-SN对应的SN-RRC配置消息，例如，第一C-SN对应的无线空口配置，以及与第一C-SN对应的执行触发条件。因此，可认为，所述候选MN的RRC配置消息包括的内容有：与第一C-MN对应的MN-RRC配置消息、第一C-SN对应的SN-RRC配置消息以及与第一C-SN对应的执行触发条件。
第一C-MN生成第一C-MN的RRC配置消息之后，可向S-MN发送CHO请求响应。该CHO请求响应可包括第一C-MN的RRC配置消息、CPAC配置和第一C-SN的待测频点。也可以理解为，CHO请求响应包括的内容有：与第一C-MN对应的MN-RRC配置消息、第一C-SN对应的SN-RRC配置消息、与第一C-SN对应的执行触发条件，以及第一C-SN的待测频点。
S205、S-MN向UE发送第一RRC配置消息，相应的，UE接收S-MN发送的第一RRC配置消息。
S-MN接收CHO请求响应之后，可确定测量配置，例如测量对象以及测量gap。例如，测量对象可包括S-MN的待测频点、第一C-MN的待测频点、S-SN的待测频点和第一C-SN的待测频点。UE根据测量配置对测量对象中的部分待测频点或全部待测频点进行测量，以确定目标小区。由于测量对象包括第一C-SN的待测频点，因此，UE评估是否满足CHO的触发条件时，除了测量C-MN的待测频点，还测量第一C-SN的待测频点，也就是，UE评估是否满足CHO的执行触发条件时，同时评估是否满足CPAC的执行触发条件。关于如何为UE配置测量gap将在下文中具体介绍，此处暂不作介绍。
S-MN接收CHO请求响应之后，还可以确定CHO配置和CPAC配置。为了与S-MN收到的CHO请求响应中的CPAC配置进行区分，将S-MN配置的CPAC配置称为第二CPAC配置。可以理解的是，S-MN确定的CHO配置包括第一C-MN在内的所有C-MN对应的无线空口配置，以及与所有C-MN对应的执行触发条件。第二CPAC配置可包括第一C-SN在内的所有C-SN对应的无线空口配置以及所有C-SN对应的执行触发条件。与MN对应的执行触发条件，也可以理解为，与MN管理的PCell(也称为候选PCell)对应的执行触发条件。与SN对应的执行触发条件，也可以理解为，与SN管理的PSCell(也称为候选PSCell)对应的执行触发条件。候选PSCell包括第一C-MN确定的所有C-SN所管理的全部PSCell。
与候选MN(例如前述第一C-MN)对应的执行触发条件，即第一执行触发条件，为CHO的执行触发条件，为UE切换到一个PCell需要满足的触发条件。也就是说，UE满足一个PCell对应的第一执行触发条件，才触发切换到该PCell的流程。与候选SN(例如前述第一C-SN)对应的执行触发条件，即第二执行触发条件，为CPAC的执行触发条件，为UE切换到一个PSCell需要满足的触发条件。也就是说，UE满足一个PSCell对应的第二执行触发条件，才触发切换到该PSCell的流程。可以理解的是，一个候选PCell对应一个第一执行触发条件，不同候选PCell对应的第一执行触发条件可以相同，也可以不同。一个候选PSCell对应一个第二执行触发条件，不同候选PSCell对应的第二执行触发条件可以相同，也可以不同。
S-MN确定测量对象以及与测量对象对应的测量gap(例如称为第一测量gap)、CHO配置和第二CPAC配置之后，可将这些信息提供给UE。例如，S-MN向UE发送第一RRC配置消息，该第一RRC配置消息包括CHO配置、第二CPAC配置、测量对象，以及与测量对象对应第一测量gap配置。也可以理解为，第一RRC配置消息包括的内容有：包括第一C-MN在内的所有C-MN对应的无线空口配置，以及与所有C-MN对应的第一执行触发条件、包括第一C-SN在内的所有C-SN对应的无线空口配置，以及与所有C-SN对应的第二执行触发条件(即候选PSCell对应的第二执行触发条件)。
第一RRC配置消息具有多种实现形式，下面结合CHO请求响应的实现形式介绍第一RRC配置消息的实现形式。在下文的介绍中，为方便描述，引入第二RRC配置，也就是，前述的第一C-MN对应的MN RRC配置消息(本申请中也称为C-MN RRC配置消息)在一个示例中，第二RRC配置消息可包括：既携带C-MN配置又携带包含CPAC执行触发条件的C-SN配置的信元Candidate Cell RRC configuration，其中，包含CPAC执行触发条件的C-SN配置也可以称为CPAC C-SN配置。在另一示例中，Candidate Cell RRC configuration中不包含CPAC C-SN配置，例如，Candidate Cell RRC configuration 可以仅包含C-MN配置，也可以包含C-MN配置和盲配的SN的配置，其中，盲配的SN是指不需要执行触发条件的一个SN。可以理解，Candidate Cell RRC configuration仅为信元名称示意，可以使用其他名称表示该信元，本申请不做限定。
第一RRC配置消息可理解为与S-MN相关的RRC配置消息(本申请中也称为S-MN RRC配置消息)。
实现形式一，第一RRC配置消息包括第二RRC配置消息和与第一C-MN对应的第一执行触发条件。第二RRC配置消息包括第一C-MN的无线空口配置，以及，候选PSCell对应的第二执行触发条件，且第一RRC配置消息中除第二RRC配置消息之外的信元中还包括候选PSCell的标识信息和候选PSCell对应的第二执行触发条件。候选PSCell的标识信息可以是候选PSCell的ID，候选PSCell的标识信息可为候选PSCell的列表，该列表包括各个候选PSCell的ID。也可以理解为，存在两份候选PSCell对应的第二执行触发条件，其中一份位于第一RRC配置消息中除第二RRC配置消息之外的信元，另外一份位于第二RRC配置消息中。这种情况下，UE在评估CHO的执行触发条件和CPAC的执行触发条件时，从第一RRC配置消息获取第二执行触发条件即可，无需解析第二RRC配置消息。如果CHO被触发，但是CPAC未被触发，UE执行主小区切换成功后，可删除第一RRC配置消息中针对第一执行触发条件的配置，即仅保留第二RRC配置消息，从而后续可按照现有CPAC配置进行CPAC评估。
示例性的，第一RRC配置消息的实现形式如下：
其中，Candidate Cell RRC configuration中携带CPAC C-SN配置。可以看出，execution condition of CPAC既包含于第二RRC配置消息中，还包含于第一RRC配置消息中除第二RRC配置消息之外的信元中。第二RRC配置消息，即Candidate Cell RRC configuration可以封装在一个容器(container)中。UE从Source cell RRC configuration获取execution condition of CPAC，无需解析Candidate Cell RRC configuration，就可以获取到CPAC的执行触发条件并进行评估。如果CHO被触发，但是CPAC未被触发，UE可删除Source cell RRC configuration中针对第一执行触发条件的配置，即仅保留Candidate Cell RRC configuration，从而后续可按照已经存储的历史CPAC配置进行CPAC评估。
由于第二RRC配置消息中的信元Candidate Cell RRC configuration可以携带C-MN配置和CPAC C-SN配置，也可以携带C-MN配置但不携带CPAC C-SN配置，因此，可通过指示信息说明Candidate Cell RRC configuration是否携带CPAC C-SN配置。例如，Candidate Cell RRC configuration包括用于指示是否携带CPAC C-SN配置的指示。如果CHO和CPAC同时被触发，UE可使用携带CPAC C-SN配置的Candidate Cell RRC configuration；如果CHO被触发，但是CPAC未被触发，UE可使用不携带CPAC C-SN配置的Candidate Cell RRC configuration，若Candidate Cell RRC configuration只包含C-MN配置，则UE可以仅配置MN且不配置SN，若Candidate Cell RRC configuration包含C-MN配置以及盲配的SN的配置，则UE可以配置MN且盲配置SN。
例如，第一RRC配置消息的实现形式可如下：
Source cell RRC configuration//第一RRC配置消息(S-MN RRC configuration message)
Meas config for CHO//CHO的测量配置
Meas config for CPAC//CPAC的测量配置(包括测量对象以及上报事件的配置)
CHO config
-Execution condition of CHO//第一执行触发条件
-List{Candidte PSCell,execution condition of CPAC}//候选PSCell的标识信息和候选PSCell对应的第二执行触发条件
实现形式二，第一RRC配置消息包括第二RRC配置消息和与第一C-MN对应的第一执行触发条件；其中，第二RRC配置消息包括第一C-MN的无线空口配置，以及，候选PSCell对应的第二执行触发条件，且第一RRC配置消息中除第二配置RRC消息之外的信元中不包括候选PSCell的标识信息和候选PSCell对应的第二执行触发条件。
与实现形式一的不同之处在于，第一RRC配置消息中除第二RRC配置消息之外的信元中不包括候选PSCell的标识信息和候选PSCell对应的第二执行触发条件。即候选PSCell对应的第二执行触发条件仅包含于第二RRC配置消息中。这种情况下，终端设备在评估CHO的执行触发条件和CPAC的执行触发条件时，解析第二RRC配置消息才能获取到CPAC的执行触发条件。一般来说，只有在UE评估满足CHO执行触发之后，才解析第二RRC配置消息；如果CHO没被触发，无需解析第二RRC配置消息。与实现形式一类似，如果CHO被触发，但是CPAC未被触发，UE执行主小区切换成功后，可只保留第二RRC配置消息，即删除第一RRC消息中针对第一执行触发条件的配置，后续可按照现有CPAC配置进行CPAC评估。
示例性的，第一RRC配置消息的实现形式如下：
其中，Candidate Cell RRC configuration携带CPAC C-SN配置。可以看出，Execution condition of CPAC仅包含于第二RRC配置消息中，第一RRC配置消息中除第二RRC配置消息之外的信元不包括Execution condition of CPAC。这种情况下，UE解析Candidate Cell RRC configuration获取到CPAC的执行触发条件并进行评估。与实现形式一类似，如果CHO被触发，但是CPAC未被触发，UE执行主小区切换成功后，可只保留Candidate Cell RRC configuration，即删除Source cell RRC configuration中针对第一执行触发条件的配置，后续可按照已经存储的历史CPAC配置进行CPAC评估。
与实现形式一类似，第二RRC配置消息可包括：携带CPAC C-SN配置的Candidate Cell RRC configuration，还可以包括：不携带CPAC C-SN配置的Candidate Cell RRC configuration。例如，第一RRC配置消息的实现形式如下：

实现形式三，第一RRC配置消息包括第二RRC配置消息与第一C-MN对应的第一执行触发条件；其中，第二RRC配置消息包括第一C-MN的无线空口配置、C-SN的无线空口配置，且第二RRC配置消息不包括候选PSCell对应的第二执行触发条件，且，第一RRC配置消息中除第二RRC配置消息之外的信元中还包括候选PSCell的标识信息和候选PSCell对应的第二执行触发条件。与实现形式一的不同之处在于，第二RRC配置消息不包括候选PSCell对应的第二执行触发条件，但是第二RRC配置消息包括C-SN的无线空口配置。这种情况下，终端设备评估CPAC的执行触发条件时，可复用第二RRC配置消息外所配置的第二执行触发条件。即终端设备无需解析第二RRC配置消息。且，如果CHO被触发，但是CPAC未被触发，UE执行主小区切换成功后，可只保留第二RRC配置消息，但是后续终端设备需要等待网络设备发送的新的CPAC配置进行CPAC评估。
示例性的，第一RRC配置消息的实现形式如下：
其中，Candidate Cell RRC configuration携带CPAC C-SN配置。可以看出，Execution condition of CPAC仅包含于第一RRC配置消息中除第二RRC配置消息之外的信元中，即第二RRC配置消息不包括Execution condition of CPAC。这种情况下，UE评估CPAC的执行触发条件时，可复用Candidate Cell RRC configuration外所配置的第二执行触发条件。即UE无需解析Candidate Cell RRC configuration。且，如果CHO被触发，但是CPAC未被触发，UE可只保留Candidate Cell RRC configuration，但是后续终端设备需要等待网络设备发送的新的CPAC配置进行CPAC评估。
与实现形式一类似，第二RRC配置消息可包括携带CPAC C-SN配置的Candidate Cell RRC configuration，也可以包括不携带CPAC C-SN配置的Candidate Cell RRC configuration。例如，第一RRC配置消息的实现形式如下：

需要说明的是，上述第一RRC配置消息的三种实现形式是举例，本申请实施例不限制使用何种实现方式。
UE根据第一RRC配置消息确定满足CHO和/或CPAC的执行触发条件，UE会向源节点发送RRC重配置完成(RRC Reconfiguration Complete)消息。如果是S-MN接收到UE发送的RRC Reconfiguration Complete消息，S-MN执行早期数据转发(early data forwarding)；如果S-MN接收到UE发送的CPAC RRC Reconfiguration Complete消息，S-MN通知S-SN执行early data forwarding。
在CHO流程中，S-MN向UE发送数据，并且S-MN持续向目标节点转发用户数据。S-MN知道UE完成CHO成功后，S-MN停止传输UE的数据以及停止向目标节点的early data forwarding。目标节点持续接收并存储来自S-MN的数据，并根据S-MN发送的极早状态传输(early status transfer)消息来清理存储的数据中S-MN已发送过的用户数据，允许S-MN向目标节点发送一个或多个early status transfer消息。S-MN知道UE完成CHO成功后，S-MN执行延迟数据转发(late data forwarding)。S-MN通过执行late data forwarding通知切换成功后的MN/改变成功的SN所接收的数据的最新编号，即数据编到第几号了，以使得切换成功后的MN/改变成功的SN从该最新编号开始对新接收的没有编号的数据进行编号。
与CHO流程类似，在CPAC流程中，如果S-SN存在的话，S-SN向UE发送数据，并且S-SN持续向目标节点转发用户数据；如果S-SN不存在的话，S-MN持续向目标节点转发用户数据，具体可参考前述CHO流程中S-MN向UE发送数据，向目标节点转发用户数据的流程，此处不再赘述。
为了更加理解本申请实施例提供的测量配置方法，下面以具体的示例，介绍基于本申请实施例提供的测量配置方法的可能流程。应理解，为了使得UE有足够的时间测量完需要测量的待测频点，需为UE配置合适的测量gap。测量gap是基于测量对象配置的，不同的测量对象配置的测量gap也有所不同。且在不同的场景中，配置测量gap的节点可能不同。例如，在EN-DC和NGEN-DC中，MN决定FR1gap模式和FR1的相关gap共享配置，而SN决定FR2gap模式和FR2的相关gap共享配置；在NE-DC和NR-DC中，MN决定FR1和FR2的gap模式以及相关的gap共享配置。在如下的示例中，还涉及了如何为UE配置测量gap。
请参见图3，为本申请实施例提供的测量配置方法的第一示例的流程图。该示例以S-MN根据第一C-MN上报的第一S-SN的待测频点、S-MN的待测频点、第一C-MN的待测频点以及S-SN的待测频点确定测量gap为例。
S301、S-MN向一个或多个C-MN发送CHO请求，相应的，所述一个或多个C-MN接收S-MN发送的CHO请求。具体可参考前述S201的相关内容。
S302、第一C-MN向一个或多个C-SN发送CPA请求，相应的，所述一个或多个C-SN接收第一C-MN发送的CPA请求。具体可参考前述S202的相关内容。
S303、第一C-SN向第一C-MN发送CPA请求响应，相应的，第一C-MN接收第一C-SN发送的CPA请求响应。具体可参考前述S203的相关内容。
在另一个示例中，第一C-MN可以向一个或多个C-SN发送CPC请求，且第一C-SN可以向第一C-MN发送CPC请求响应，不做赘述。
S304、第一C-MN向S-MN发送CHO请求响应，相应的，S-MN接收第一C-MN发送的CHO请求响应。
该CHO请求响应包括第一C-SN的待测频点。第一C-MN接收到第一C-SN发送的CPA请求响应，获取第一C-SN的待测频点，并通过CHO请求响应发送给S-MN。具体可参数前述S204的相关描述，此处不再赘述。可选地，CHO请求响应包括候选辅节点的标识和/或数据转发地址，以实现CPAC下的 数据直接转发。
S305、S-MN向UE发送第一RRC配置消息，相应的，UE接收S-MN发送的第一RRC配置消息。
S-MN接收CHO请求响应，可生成第一RRC配置消息，第一RRC配置消息包括测量对象的配置以及第一测量gap配置。该第一测量gap配置为第一测量gap的配置。第一RRC配置消息包括的其他内容可参考前述S205的相关内容，此处不再赘述。第一测量gap配置可根据S-MN的待测频点、第一C-MN的待测频点、SN的待测频点和C-SN的待测频点进行配置。应理解，频点越多，需要的测量时间越长。本申请实施例中，第一测量gap配置可根据S-MN的待测频点、第一C-MN的待测频点、SN的待测频点和C-SN的待测频点进行配置，即配置足够用于测量的时间，可避免漏测量部分待测频点。
需要说明的是，S-MN还可以向S-SN发送第一测量gap的配置和测量gap类型。从而S-SN可根据第一测量gap配置和测量gap类型确定是否为UE配置gap，以及配置何种gap。例如，在EN-DC场景或NGEN-DC场景，第一测量gap配置为FR1的gap配置，测量gap类型为针对FR1的测量gap类型。至少一个SN的待测频点在FR2内时，S-SN还可以为UE配置FR2的gap测量。
S306、UE向S-MN发送RRC重配完成消息，相应的，S-MN接收UE发送的RRC重配完成消息。
UE接收到第一RRC配置消息之后，可根据第一RRC配置消息完成重配置。UE完成重配置之后，向S-MN发送RRC重配完成消息。
S-MN收到UE反馈的RRC重配完成消息，开始执行S-MN和C-MN之间的data forwarding。S-MN还通知S-SN准备CPAC的data forwarding，也就是，S-SN和C-SN之间的data forwarding。
CPAC的data forwarding包括两种方式，一种称为直接的数据转发方式，另一种称为非直接的数据转发方式。直接的数据转发方式，即S-MN在通知S-SN准备执行data forwarding时，还向S-SN提供一个或多个C-SN标识和/或对应C-SN的数据转发地址。从而S-SN根据各个C-SN的数据转发地址执行early data forwarding。这种情况下，C-MN发送给S-MN的CHO请求响应包括所述一个或多个C-SN的标识和/或数据转发地址。
非直接的数据转发方式，即S-MN在通知S-SN准备执行data forwarding时，不向S-SN提供数据转发地址或者自己的数据转发地址。S-SN将数据转发给S-MN，由S-MN将数据转发给C-MN，进而由C-MN将数据转发C-SN。可知，如果使用非直接的数据转发方式，CHO请求响应可不包括C-SN的标识和/或数据转发地址。
S307、UE确定目标小区并切换到目标小区。
UE可对第一RRC配置消息中的测量对象进行测量，从而根据测量结果确定满足执行触发条件的目标小区。即UE评估CHO的执行触发条件(第一执行触发条件)和CPAC的执行触发条件(第二执行触发条件)。根据所满足执行触发条件的不同，可能会存在几种情况。例如，同时满足第一执行触发条件和第二执行触发条件，或者，满足第一执行触发条件，不满足第二执行触发条件，后续的流程可能不同。下面分别介绍。在下文的介绍中，以存在两个PCell(例如PCell 1和PCell 2)为例，与PCell 1对应的PSCell包括PSCell 1、PSCell 2和PSCell 3。与PCell 2对应的PSCell包括PSCell 4和PSCell 5。
情况1，满足第一执行触发条件和第二执行触发条件。
S308a、UE确定CHO和CPAC都被触发。举例来说，PCell 2满足第一执行触发条件，PSCell 4满足第二执行触发条件。这种情况下，UE可尝试接入PCell 2，还可以尝试PSCell的改变，即改变到PSCell4。PCell 2可理解为是目标PCell，PSCell 4可理解为目标PSCell。
S309a、UE向第二C-MN发送RRC配置完成消息，相应的，第二C-MN接收UE发送的RRC配置完成消息。
第二C-MN是管理PCell 2的C-MN。应理解，若有多个C-MN向S-MN发送CHO请求响应，则第二C-MN是这些发送CHO请求响应的C-MN中的一个C-MN。可选地，第二C-MN是前述第一C-MN。该RRC配置完成消息可用于UE与第二C-MN建立连接。另外，该RRC配置完成消息包括目标PSCell的标识信息。沿用上述的例子，该RRC配置完成消息可包括PSCell 4的标识(identifier，ID)。
S310a、第二C-MN向第二C-SN发送SN重配置完成消息，相应的，第二C-SN接收第二C-MN发送的SN重配置完成消息。
第二C-MN可根据PSCell 4的ID，确定向第二C-SN发送SN重配置完成消息，该SN重配置完成消息可用于UE改变PSCell。其中，第二C-SN是管理PSCell 4的C-SN。应理解，第二C-SN属于第二C-MN确定的至少一个C-SN。如果第二C-MN确定的一个C-SN，那么第二C-SN为该C-SN。如果第 二C-MN确定多个C-SN，第二C-SN为该多个C-SN中的一个C-SN。
S311a、第二C-MN向S-MN发送切换完成消息。
第二C-MN确定UE完成小区的切换，可向S-MN发送切换完成消息。
可以理解的是，如果S-MN确定本次切换使用late data forwarding，那么在接收到切换完成消息，将用户数据以及用户数据对应的SN状态信息转发给第二C-MN。第二C-MN可使用late data forwarding，将用户数据以及用户数据对应的SN状态信息转发给第二C-SN。
情况2，满足第一执行触发条件，不满足第二执行触发条件。
S308b、UE确定CHO被触发，CPAC没有被触发。举例来说，PCell 2满足第一执行触发条件，PSCell 4和PSCell 5均不满足第二执行触发条件。这种情况下，UE可尝试接入PCell 2，即将PCell 2作为目标PCell。
S309b、UE向第二C-MN发送RRC配置完成消息，相应的，第二C-MN接收UE发送的RRC配置完成消息。
第二C-MN是管理PCell 2的C-MN。该RRC配置完成消息可用于UE与第二C-MN建立连接。UE仅执行PCell的切换。
S310b、第二C-MN向S-MN发送切换完成消息。
第二C-MN确定UE完成小区的切换，向S-MN发送切换完成消息。
可以理解的是，在情况2中，如果第一RRC配置消息以实现形式一或实现形式二实现，那么UE可确定保持CPAC的配置，即后续沿用已有的CPAC配置判断是否进行小区切换。如果第一RRC配置消息以实现形式三实现，那么UE可删除已存储的CPAC的配置，后续等待新的CPAC配置判断是否进行小区切换。
请参见图4，为本申请实施例提供的测量配置方法的第二示例的流程图。示例二与示例一的不同之处在于，第一C-MN可根据第一S-SN的待测频点和第一C-MN的待测频点配置测量gap，并将该测量gap发送给S-MN。
S401、S-MN向一个或多个C-MN发送CHO请求，相应的，所述一个或多个C-MN接收S-MN发送的CHO请求。具体可参考前述S301的相关内容。
S402、第一C-MN向一个或多个C-SN发送CPA请求，相应的，所述一个或多个C-SN接收第一C-MN发送的CPA请求。具体可参考前述S302的相关内容。
S403、第一C-SN向第一C-MN发送CPA请求响应，相应的，第一C-MN接收第一C-SN发送的CPA请求响应。具体可参考前述S303的相关内容。
在另一个示例中，第一C-MN可以向一个或多个C-SN发送CPC请求，且第一C-SN可以向第一C-MN发送CPC请求响应，不做赘述。
S404、第一C-MN向S-MN发送CHO请求响应，相应的，S-MN接收第一C-MN发送的CHO请求响应。
该CHO请求响应可包括第一C-SN的待测频点和第二测量gap配置。其中，第二测量gap是第一C-MN可根据第一S-SN的待测频点和第一C-MN的待测频点配置的测量gap。也可以理解为，第一C-MN除了向S-MN提供第一C-SN的待测频点，还可以根据第一C-SN的待测频点和自身的待测频点配置gap，例如第二测量gap。对于S-MN来说，如果接收到第一C-MN发送的第二测量gap配置，可根据第二测量gap配置和S-MN的待测频点以及S-SN的待测频点确定第一测量gap。也可以理解为，第二测量gap可用于辅助S-MN为UE配置更为合适的gap。例如，第一测量gap大于第二测量gap，S-MN可为UE配置第一测量gap；相反，如果第二测量gap大于第一测量gap，那么S-MN可为UE配置第二测量gap，从而为UE留有足够的时间以完成对需要测量频点的测量。
S405、S-MN向UE发送第一RRC配置消息，相应的，UE接收S-MN发送的第一RRC配置消息。具体可参考前述S305的相关内容，此处不再赘述。与图3所示流程类似，S-MN还可以向S-SN发送第一测量gap的配置和测量gap类型，具体参考图3实施例的相关内容，此处不再赘述。
S406、UE向S-MN发送RRC重配完成消息，相应的，S-MN接收UE发送的RRC重配完成消息。具体可参考前述S306的相关内容，此处不再赘述。
S407、UE确定目标小区并切换到目标小区。
与S307类似，根据满足执行触发条件的不同，也有两种情况，即情况1执行S408a-S411a，具体 参考S308a-S311a，不再赘述。类似地，情况2即执行S408b-S410b，具体参考S308b-S310b，不再赘述。
情况1，第一执行触发条件和第二执行触发条件都满足。
S408a、UE确定CHO和CPAC都被触发。举例来说，PCell 2满足第一执行触发条件，PSCell 4满足第二执行触发条件。这种情况下，UE可尝试接入PCell 2，还可以尝试PSCell的改变，即改变到PSCell 4。PCell 2可理解为是目标PCell，PSCell 4可理解为目标PSCell。
S409a、UE向第二C-MN发送RRC配置完成消息，相应的，第二C-MN接收UE发送的RRC配置完成消息。
第二C-MN是管理PCell 2的C-MN。该RRC配置完成消息包括目标PSCell的标识信息。沿用上述的例子，该RRC配置完成消息可包括PSCell 4的ID。
S410a、第二C-MN向第二C-SN发送SN重配置完成消息，相应的，第二C-SN接收第二C-MN发送的SN重配置完成消息。
第二C-MN可根据PSCell 4的ID，确定向第二C-SN发送SN重配置完成消息，该SN重配置完成消息可用于UE改变PSCell。
S411a、第二C-MN向S-MN发送切换完成消息。
第二C-MN确定UE完成小区的切换，可向S-MN发送切换完成消息。
情况2，满足第一执行触发条件，不满足第二执行触发条件。
S408b、UE确定CHO被触发，CPAC没有被触发。举例来说，PCell 2满足第一执行触发条件，PSCell 4和PSCell 5均不满足第二执行触发条件。这种情况下，UE可尝试接入PCell 2，即将PCell 2作为目标PCell。
S409b、UE向第二C-MN发送RRC配置完成消息，相应的，第二C-MN接收UE发送的RRC配置完成消息。
第二C-MN是管理PCell 2的C-MN。该RRC配置完成消息可用于UE与第二C-MN建立连接。UE仅执行PCell的切换。
S410b、第二C-MN向S-MN发送切换完成消息。
第二C-MN确定UE完成小区的切换，向S-MN发送切换完成消息。
示例二与示例一的不同之处在于，第一C-MN可配置第二测量gap，并提供给S-MN。示例二与示例一的相同之处可参考示例一的相关介绍，此处不再赘述。
请参见图5，为本申请实施例提供的测量配置方法的第三示例的流程图。在示例三中，S-MN将FR2内的待测频点提供给S-SN，由S-SN向UE配置FR2内的测量gap。S-MN可配置FR1内的测量gap。也可以理解为，S-MN和S-SN协商完成gap的配置，从而实现EN-DC场景和NGEN-DC场景中的测量gap的配置。
S501、S-MN向一个或多个C-MN发送CHO请求，相应的，所述一个或多个C-MN接收S-MN发送的CHO请求。具体可参考前述S301的相关内容。
S502、第一C-MN向一个或多个C-SN发送CPA请求，相应的，所述一个或多个C-SN接收第一C-MN发送的CPA请求。具体可参考前述S302的相关内容。
S503、第一C-SN向第一C-MN发送CPA请求响应，相应的，第一C-MN接收第一C-SN发送的CPA请求响应。具体可参考前述S303的相关内容。
在另一个示例中，第一C-MN可以向一个或多个C-SN发送CPC请求，且第一C-SN可以向第一C-MN发送CPC请求响应，不做赘述。S504、第一C-MN向S-MN发送CHO请求响应，相应的，S-MN接收第一C-MN发送的CHO请求响应。具体可参考前述S404的相关内容，此处不再赘述。
S505、S-MN向S-SN发送测量频点信息，相应的，S-SN接收S-MN发送的测量频点信息。该测量频点信息指示第一C-SN的待测频点中位于FR2内的待测频点。可以理解的是，S-MN的待测频点以及第一C-MN的待测频点都位于FR1内，S-SN和第一C-SN的待测频点可以位于FR1内，也可以位于FR2内。然而，如果针对FR配置测量gap，S-MN仅能决定FR1内的测量gap配置，因此，S-MN可将第一C-SN的待测频点中位于FR2内的待测频点提供给S-SN，从而由S-SN决定FR2内的测量gap配置。
S506、S-SN根据测量频点信息确定第三测量gap。
S-SN根据第一C-SN的待测频点中位于FR2内的待测频点确定第三测量gap。
S507、S-SN向UE发送第三测量gap配置，相应的，UE接收S-SN发送的第三测量gap。
S-SN可向UE提供位于FR2内的待测频点的测量gap，即第三测量gap。
S508、S-MN向UE发送第一RRC配置消息，相应的，UE接收S-MN发送的第一RRC配置消息。
与S405的不同之处在于，第一RRC配置消息中测量配置包括与FR1内的待测频点对应的测量gap配置，例如称为第四测量gap配置，由S-MN根据位于FR1内的待测频点配置。对于UE来说，测量gap配置的来源包括两部分，其中一部分来自S-MN，即位于FR1内的待测频点的测量gap配置，另一部分来自S-SN，即位于FR2内的待测频点的测量gap配置。在该示例中，由于S-MN和S-SN协商完成测量gap的配置，从而可适用于EN-DC场景和NGEN-DC场景。
S509、UE向S-MN发送RRC重配完成消息，相应的，S-MN接收UE发送的RRC重配完成消息。具体可参考前述S306的相关内容，此处不再赘述。
S510、UE确定目标小区并切换到目标小区。
与S307类似，根据满足执行触发条件的不同，也有两种情况，即情况1执行S511a-S514a，具体参考S308a-S311a，不再赘述。类似地，情况2即执行S511b-S513b，具体参考S308b-S310b，不再赘述。
情况1：满足第一执行触发条件和第二执行触发条件。
S511a、UE确定CHO和CPAC都被触发。举例来说，PCell 2满足第一执行触发条件，PSCell 4满足第二执行触发条件。这种情况下，UE可尝试接入PCell 2，还可以尝试PSCell的改变，即改变到PSCell 4。PCell 2可理解为是目标PCell，PSCell 4可理解为目标PSCell。
S512a、UE向第二C-MN发送RRC配置完成消息，相应的，第二C-MN接收UE发送的RRC配置完成消息。
第二C-MN是管理PCell 2的C-MN。该RRC配置完成消息包括目标PSCell的标识信息。沿用上述的例子，该RRC配置完成消息可包括PSCell 4的ID。
S513a、第二C-MN向第二C-SN发送SN重配置完成消息，相应的，第二C-SN接收第二C-MN发送的SN重配置完成消息。
第二C-MN可根据PSCell 4的ID，确定向第二C-SN发送SN重配置完成消息，该SN重配置完成消息可用于UE改变PSCell。
S514a、第二C-MN向S-MN发送切换完成消息。
第二C-MN确定UE完成小区的切换，可向S-MN发送切换完成消息。
情况2，满足第一执行触发条件，不满足第二执行触发条件。
S511b、UE确定CHO被触发，CPAC没有被触发。举例来说，PCell 2满足第一执行触发条件，PSCell 4和PSCell 5均不满足第二执行触发条件。这种情况下，UE可尝试接入PCell 2，即将PCell 2作为目标PCell。
S512b、UE向第二C-MN发送RRC配置完成消息，相应的，第二C-MN接收UE发送的RRC配置完成消息。
第二C-MN是管理PCell 2的C-MN。该RRC配置完成消息可用于UE与第二C-MN建立连接。UE仅执行PCell的切换。
S513b、第二C-MN向S-MN发送切换完成消息。
第二C-MN确定UE完成小区的切换，向S-MN发送切换完成消息。
示例三与示例一的不同之处在于，S-MN可向S-SN提供候选SN的待测频点中位于FR2内的待测频点，由S-SN为UE提供与FR2对应的测量gap配置，由S-MN为UE提供与FR1对应的测量gap配置，从而可适用于EN-DC场景和NGEN-DC场景。示例三与示例一的相同之处可参考示例一的相关介绍，此处不再赘述。
请参见图6，为本申请实施例提供的测量配置方法的第四示例的流程图。在示例四中，第一C-SN可配置与FR2对应的测量gap，并指示给第一C-MN，第一C-MN向S-MN指示与FR2对应的测量gap。S-MN向S-SN指示与FR2对应的测量gap，最终由S-SN根据S-MN指示的与FR2对应的测量gap，为UE配置测量gap。
S601、S-MN向一个或多个C-MN发送CHO请求(或CPC请求)，相应的，所述一个或多个C-MN接收S-MN发送的CHO请求(或CPC请求)。具体可参考前述S301的相关内容，此处不再赘述。
S602、第一C-MN向一个或多个C-SN发送CPA请求(或CPC请求响应)，相应的，所述一个或 多个C-SN接收第一C-MN发送的CPA请求(或CPC请求响应)。具体可参考前述S302的相关内容，此处不再赘述。
S603、第一C-SN向第一C-MN发送CPA请求响应，相应的，第一C-MN接收第一C-SN发送的CPA请求响应。
与示例一的不同之处在于，CPA请求响应包括第一C-SN根据位于FR2内的待测频点确定的测量gap配置，即与FR2对应的测量gap配置。关于CAP请求响应还包括的其他内容具体可参前述S303的相关介绍，此处不再赘述。
S604、第一C-MN向S-MN发送CHO请求响应，相应的，S-MN接收第一C-MN发送的CHO请求响应。
与示例一的不同之处在于，该CHO请求响应还包括与FR2对应的测量gap配置。关于CHO请求响应还包括的其他内容具体可参前述S304的相关介绍，此处不再赘述。
S605、S-MN向S-SN发送第三测量gap配置和测量gap类型，相应的，S-SN接收S-MN发送的第三测量gap配置和测量gap类型。测量gap类型指示第三测量gap配置的类型，例如，per-UE gap或per-FR gap。
第三测量gap配置可以是S-MN从CHO请求响应中获取的，也可以是S-MN根据从CHO请求响应中获取的测量gap配置，重新确定的测量gap配置。
S606、S-SN向UE发送第五测量gap配置，相应的，UE接收S-SN发送的第五测量gap。
S-SN接收到第三测量gap配置和第三测量gap的类型，可为UE配置与FR2对应的测量gap，例如称为第五测量gap。如果第三测量gap类型指示per-FR gap，S-SN可将第三测量gap配置作为第五测量gap配置。或者，S-SN可根据第三测量gap配置以及自身位于FR2的待测频点确定第五测量gap配置。
S607、S-MN向UE发送第一RRC配置消息，相应的，UE接收S-MN发送的第一RRC配置消息。
与示例一的不同之处在于，第一RRC配置消息中测量配置包括位于FR1内的待测频点的测量gap配置。关于第一RRC配置消息包括的其他内容可参考前述S205的相关描述，此处不再赘述。
S608、UE向S-MN发送RRC重配完成消息，相应的，S-MN接收UE发送的RRC重配完成消息。具体可参考前述S306的相关内容，此处不再赘述。
S609、UE确定目标小区并切换到目标小区。
与S510类似，根据满足执行触发条件的不同，也有两种情况，即情况1执行S610a-S613a，具体参考S511a-S514a，不再赘述。类似地，情况2即执行S610b-S612b，具体参考S511b-S513b，不再赘述。
情况1：满足第一执行触发条件和第二执行触发条件。
S610a、UE确定CHO和CPAC都被触发。
S611a、UE向第二C-MN发送RRC配置完成消息，相应的，第二C-MN接收UE发送的RRC配置完成消息。第二C-MN是管理目标PCell的C-MN。该RRC配置完成消息包括目标PSCell的标识信息。
S612a、第二C-MN向第二C-SN发送SN重配置完成消息，相应的，第二C-SN接收第二C-MN发送的SN重配置完成消息。
S613a、第二C-MN向S-MN发送切换完成消息。
情况2，满足第一执行触发条件，不满足第二执行触发条件。
S610b、UE确定CHO被触发，CPAC没有被触发。
S611b、UE向第二C-MN发送RRC配置完成消息，相应的，第二C-MN接收UE发送的RRC配置完成消息。第二C-MN是管理目标PCell的C-MN。该RRC配置完成消息可用于UE与第二C-MN建立连接。UE仅执行PCell的切换。
S612b、第二C-MN向S-MN发送切换完成消息。
示例四与示例三的不同之处在于，S-MN可根据C-SN的待测频点确定测量gap，并将该测量gap以及该测量gap的类型提供给S-SN，由S-SN为UE提供与FR2对应的测量gap配置，由S-MN为UE提供与FR1对应的测量gap配置，从而可适用于EN-DC场景和NGEN-DC场景。示例四与示例三的相同之处可参考示例三的相关介绍，此处不再赘述。
在本申请实施例中，为了更快速地完成CPAC，可以既配置CHO，又配置CPAC。当配置了CHO 和CPAC时，C-MN可将C-SN的待测频点提供给S-MN。从而S-MN可根据C-SN的待测频点配置测量对象，使得终端设备在评估是否满足CHO的触发条件时，除了测量C-SN的待测频点，还测量S-SN的待测频点，即还评估是否满足CPAC的触发条件，以增大CPAC的触发机会。从而使得终端设备更快速地完成CPAC，且有利于终端设备接入更为合适的目标小区，提高终端设备接入目标小区后的通信质量。
另外，通过本申请实施例提供的方法，S-MN和S-SN可协商完成测量gap的配置，例如，S-MN可将位于FR2内的待测频点提供给S-SN。由S-SN配置与FR2对应的测量gap，并提供给终端设备。由S-MN向终端设备提供与FR1对应的测量gap，并提供给终端设备，可以适用于EN-DC场景和NGEN-DC场景中的测量gap配置。
所述本申请提供的实施例中，分别从终端设备、源主节点、候选主节点、候选辅节点以及源辅节点之间交互的角度对本申请实施例提供的方法进行了介绍。为了实现上述本申请实施例提供的方法中的各功能，源主节点、候选主节点可以包括硬件结构和/或软件模块，以硬件结构、软件模块、或硬件结构加软件模块的形式来实现上述各功能。上述各功能中的某个功能以硬件结构、软件模块、还是硬件结构加软件模块的方式来执行，取决于技术方案的特定应用和设计约束条件。
下面结合附图介绍本申请实施例中用来实现上述方法的通信装置。
图7为本申请实施例提供的通信装置700的示意性框图。该通信装置700可以包括处理模块710和收发模块720。可选地，还可以包括存储单元，该存储单元可以用于存储指令(代码或者程序)和/或数据。处理模块710和收发模块720可以与该存储单元耦合，例如，处理模块710可以读取存储单元中的指令(代码或者程序)和/或数据，以实现相应的方法。上述各个模块可以独立设置，也可以部分或者全部集成。
一些可能的实施方式中，通信装置700能够对应实现上述方法实施例中源主节点(S-MN)的行为和功能，通信装置700可以为源主节点，也可以为应用于源主节点中的部件(例如芯片或者电路)，也可以是源主节点中的芯片或芯片组或芯片中用于执行相关方法功能的一部分。
例如，通信装置700实现图2-图6所示的任意实施例中S-MN执行的方法。其中，收发模块720可用于向一个或多个候选主节点发送CHO请求，以及接收第一候选主节点发送的CHO请求响应，该CHO请求响应包括CHO配置、第一CPAC配置和候选辅节点的待测频点。第一候选主节点属于所述一个或多个候选主节点。处理模块710可用于确定第一RRC配置消息，该第一RRC配置消息包括CHO配置、第二CPAC配置和测量配置。第二CPAC配置是基于第一CPAC配置确定的。测量配置包括测量对象和测量对象对应的第一测量gap配置。测量对象包括源主节点的待测频点、第一候选主节点的待测频点、辅主节点的待测频点和候选辅节点的待测频点。收发模块720还用于向终端设备发送第一RRC配置消息。
作为一种可选的实现方式，处理模块710还用于根据所述测量对象确定第一测量gap配置；收发模块720还用于向源辅节点发送第一测量gap配置和测量间隙类型。
作为一种可选的实现方式，CHO请求响应还包括第二测量gap配置，该第二测量gap配置是根据第一候选主节点的待测频点和候选辅节点的待测频点确定的，其中，处理模块710还用于根据第二测量gap配置确定第一测量gap配置；收发模块720还用于向源辅节点发送第一测量gap配置和测量间隙类型。
作为一种可选的实现方式，CHO请求响应还包括第三测量gap配置，该第三测量gap配置是根据候选辅节点的待测频点中位于FR2内的频点配置的。
作为一种可选的实现方式，收发模块720还用于向源辅节点发送测量频点信息，该测量频点信息指示候选辅节点的待测频点中位于FR2内的频点。
作为一种可选的实现方式，FR2的最低频率大于或等于24.25GHz，FR2的最高频率小于或等于52.6GHz。
作为一种可选的实现方式，处理模块710还用于根据候选辅节点的待测频点确定第四测量gap配置，其中，候选辅节点的待测频点为位于FR1内的频点。
作为一种可选的实现方式，CHO请求响应包括候选辅节点的标识和/或数据转发的地址。
作为一种可选的实现方式，第一RRC配置消息包括第二RRC配置消息和与第一候选主节点对应的第一执行触发条件，其中，第二RRC配置消息包括第一候选主节点的无线空口配置，候选辅节点的无 线空口配置，以及，候选PSCell对应的第二执行触发条件，且，第一RRC配置消息中除第二RRC配置消息之外的信元中还包括所述候选PSCell的标识信息和第二执行触发条件。所述候选PSCell由候选辅节点管理。
作为一种可选的实现方式，第一RRC配置消息包括第二RRC配置消息和与第一候选主节点对应的第一执行触发条件，其中，第二RRC配置消息包括第一候选主节点的无线空口配置，候选辅节点的无线空口配置，以及候选PSCell对应的第二执行触发条件，且，第一RRC配置消息中除第二RRC配置消息之外的信元中不包括所述候选PSCell的标识信息和第二执行触发条件。所述候选PSCell由候选辅节点管理。
作为一种可选的实现方式，第一RRC配置消息包括第二RRC配置消息和与第一候选主节点对应的第一执行触发条件，其中，所述第二RRC配置消息包括第一候选主节点的无线空口配置，候选辅节点的无线空口配置，且第二RRC配置消息中不包括候选PSCell对应的第二执行触发条件，且，第一RRC配置消息中除第二RRC配置消息之外的信元中还包括所述候选PSCell的标识信息和第二执行触发条件。所述候选PSCell由候选辅节点管理。
又例如，通信装置700实现图2-图6任意实施例中第一候选主节点执行的方法。其中，收发模块720用于接收源主节点发送的CHO请求，以及向候选辅节点发送CPA请求，以及接收候选辅节点发送的CPA请求响应，其中，CPA请求响应包括候选辅节点的待测频点。处理模块710用于确定CHO请求响应，该CHO请求响应包括CHO配置、第一CPAC的配置信息和候选辅节点的待测频点。收发模块720还用于向源主节点发送CHO请求响应，该CHO请求响应包括CHO配置、第一CPAC配置和候选辅节点的待测频点。或者，收发模块720用于接收源主节点发送的CHO请求，以及向候选辅节点发送CPC请求，以及接收候选辅节点发送的CPC请求响应，其中，CPC请求响应包括候选辅节点的待测频点。处理模块710用于确定CHO请求响应，该CHO请求响应包括CHO配置、第一CPAC配置和候选辅节点的待测频点。收发模块720还用于向源主节点发送CHO请求响应，该CHO请求响应包括CHO配置、第一CPAC配置和候选辅节点的待测频点。
作为一种可选的实现方式，CHO请求响应包括的候选辅节点的待测频点为候选辅节点的所有待测频点。
作为一种可选的实现方式，CHO请求响应包括候选辅节点的标识和/或数据转发的地址。
作为一种可选的实现方式，处理模块710还用于根据候选辅节点的待测频点确定测量间隙配置；收发模块720还用于向源主节点发送所述测量间隙配置。
应理解，本申请实施例中的处理模块710可以由处理器或处理器相关电路组件实现，收发模块720可以由收发器或收发器相关电路组件或者通信接口实现。
图8为本申请实施例提供的通信装置800的示意性框图。其中，该通信装置800可以是源主节点，能够实现本申请实施例提供的方法中源主节点的功能。通信装置800也可以是能够支持源主节点实现本申请实施例提供的方法中对应的功能的装置，其中，该通信装置800可以为芯片系统。本申请实施例中，芯片系统可以由芯片构成，也可以包含芯片和其他分立器件。具体的功能可以参见上述方法实施例中的说明。该通信装置800也可以是候选主节点，能够实现本申请实施例提供的方法中第一候选主节点的功能。通信装置800也可以是能够支持候选主节点实现本申请实施例提供的方法中对应的功能的装置，其中，该通信装置800可以为芯片系统。本申请实施例中，芯片系统可以由芯片构成，也可以包含芯片和其他分立器件。具体的功能可以参见上述方法实施例中的说明。
通信装置800包括一个或多个处理器801，可用于实现或用于支持通信装置800实现本申请实施例提供的方法中源主节点的功能。具体参见方法示例中的详细描述，此处不做赘述。一个或多个处理器801也可以用于实现或用于支持通信装置800实现本申请实施例提供的方法中第一候选主节点的功能。具体参见方法示例中的详细描述，此处不做赘述。处理器801也可以称为处理单元或处理模块，可以实现一定的控制功能。处理器801可以是通用处理器或者专用处理器等。例如，包括：中央处理器，应用处理器，调制解调处理器，图形处理器，图像信号处理器，数字信号处理器，视频编解码处理器，控制器，存储器，和/或神经网络处理器等。所述中央处理器可以用于对通信装置800进行控制，执行软件程序和/或处理数据。不同的处理器可以是独立的器件，也可以是集成在一个或多个处理器中，例如，集成在一个或多个专用集成电路上。
可选地，通信装置800中包括一个或多个存储器802，用以存储指令804，所述指令可在所述处理 器801上被运行，使得通信装置800执行上述方法实施例中描述的方法。存储器802和处理器801可以单独设置，也可以集成在一起，也可以认为存储器802和处理器801耦合。本申请实施例中的耦合是装置、单元或模块之间的间接耦合或通信连接，可以是电性，机械或其它的形式，用于装置、单元或模块之间的信息交互。处理器801可能和存储器802协同操作。所述至少一个存储器中的至少一个可以包括于处理器中。需要说明的是，存储器802不是必须的，所以在图8中以虚线进行示意。
可选地，所述存储器802中还可以存储有数据。所述处理器和存储器可以单独设置，也可以集成在一起。在本申请实施例中，存储器802可以是非易失性存储器，比如硬盘(hard disk drive，HDD)或固态硬盘(solid-state drive，SSD)等，还可以是易失性存储器(volatile memory)，例如随机存取存储器(random-access memory，RAM)。存储器是能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。本申请实施例中的存储器还可以是电路或者其它任意能够实现存储功能的装置，用于存储程序指令和/或数据。
可选地，通信装置800可以包括指令803(有时也可以称为代码或程序)，所述指令803可以在所述处理器上被运行，使得所述通信装置800执行上述实施例中描述的方法。处理器801中可以存储数据。
可选地，通信装置800还可以包括收发器805以及天线806。所述收发器805可以称为收发单元，收发模块、收发机、收发电路、收发器，输入输出接口等，用于通过天线806实现通信装置800的收发功能。
本申请中描述的处理器801和收发器805可实现在集成电路(integrated circuit，IC)、模拟IC、射频集成电路(radio frequency identification，RFID)、混合信号IC、ASIC、印刷电路板(printed circuit board，PCB)、或电子设备等上。实现本文描述的通信装置，可以是独立设备(例如，独立的集成电路，手机等)，或者可以是较大设备中的一部分(例如,可嵌入在其他设备内的模块)，具体可以参照前述关于终端设备，以及网络设备的说明，在此不再赘述。
可选地，通信装置800还可以包括以下一个或多个部件：无线通信模块，音频模块，外部存储器接口，内部存储器，通用串行总线(universal serial bus，USB)接口，电源管理模块，天线，扬声器，麦克风，输入输出模块，传感器模块，马达，摄像头，或显示屏等等。可以理解，在一些实施例中，通信装置800可以包括更多或更少部件，或者某些部件集成，或者某些部件拆分。这些部件可以是硬件，软件，或者软件和硬件的组合实现。
需要说明的是，上述实施例中的通信装置可以是源主节点(或第一候选主节点)也可以是电路，也可以是应用于源主节点(或第一候选主节点)中的芯片或者其他具有上述源主节点功能(或第一候选主节点)的组合器件、部件等。当通信装置是源主节点(或第一候选主节点)时，收发模块可以是收发器，可以包括天线和射频电路等，处理模块可以是处理器，例如：中央处理模块(central processing unit，CPU)。当通信装置是具有上述源主节点(或第一候选主节点)功能的部件时，收发模块可以是射频单元，处理模块可以是处理器。当通信装置是芯片系统时，该通信装置可以是现场可编程门阵列(field programmable gate array，FPGA)，可以是专用集成芯片(application specific integrated circuit，ASIC)，还可以是系统芯片(system on chip，SoC)，还可以是CPU，还可以是网络处理器(network processor，NP)，还可以是数字信号处理电路(digital signal processor，DSP)，还可以是微控制器(micro controller unit，MCU)，还可以是可编程控制器(programmable logic device，PLD)或其他集成芯片。处理模块可以是芯片系统的处理器。收发模块或通信接口可以是芯片系统的输入输出接口或接口电路。例如，接口电路可以为代码/数据读写接口电路。所述接口电路，可以用于接收代码指令(代码指令存储在存储器中，可以直接从存储器读取，或也可以经过其他器件从存储器读取)并传输至处理器；处理器可以用于运行所述代码指令以执行上述方法实施例中的方法。又例如，接口电路也可以为通信处理器与收发机之间的信号传输接口电路。
当该通信装置为芯片类的装置或者电路时，该装置可以包括收发单元和处理单元。其中，所述收发单元可以是输入输出电路和/或通信接口；处理单元为集成的处理器或者微处理器或者集成电路。
本申请实施例还提供一种通信系统，具体的，通信系统包括源主节点、至少一个候选主节点、至少一个候选辅节点、源辅节点和终端设备。示例性的，通信系统包括用于实现上述图2-图6中一个或多个图的相关功能的源主节点、第一候选主节点、第一候选辅节点和终端设备。具体请参考上述方法实施例中的相关描述，这里不再赘述。
本申请实施例中还提供一种计算机可读存储介质，包括指令，当其在计算机上运行时，使得计算机 执行图2-图6中一个或多个图中第一候选主节点执行的方法。或者，当其在计算机上运行时，使得计算机执行图2-图6中一个或多个图中源主节点执行的方法。
本申请实施例中还提供一种计算机程序产品，包括指令，当其在计算机上运行时，使得计算机执行图2-图6中一个或多个图中第一候选主节点执行的方法。或者，当其在计算机上运行时，使得计算机执行图2-图6中一个或多个图中源主节点执行的方法。
本申请实施例提供了一种芯片系统，该芯片系统包括处理器，还可以包括存储器，用于实现前述方法中第一候选主节点的功能；或者用于实现前述方法中源主节点的功能。该芯片系统可以由芯片构成，也可以包含芯片和其他分立器件。
应理解，在本申请的各种实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各种说明性逻辑块(illustrative logical block)和步骤(step)，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(read-only memory，ROM)、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (30)

  1. 一种测量配置方法，其特征在于，包括：
    源主节点向一个或多个候选主节点发送条件切换CHO请求；
    所述源主节点接收第一候选主节点发送的CHO请求响应，所述CHO请求响应包括CHO配置和候选辅节点的待测频点，所述第一候选主节点属于所述一个或多个候选主节点；
    所述源主节点向终端设备发送第一无线资源控制RRC配置消息，所述第一RRC配置消息包括所述CHO配置和测量配置，所述测量配置由所述源主节点根据所述CHO请求响应确定，所述测量配置包括测量对象和所述测量对象对应的第一测量间隙配置。
  2. 如权利要求1所述的方法，其特征在于，所述方法还包括：
    所述源主节点根据所述测量对象确定所述第一测量间隙配置；
    所述源主节点向源辅节点发送所述第一测量间隙配置和测量间隙类型，所述测量间隙类型包括针对所述终端设备配置的测量间隙类型或针对频率范围配置的测量间隙类型。
  3. 如权利要求1所述的方法，其特征在于，所述CHO请求响应还包括第二测量间隙配置，所述第二测量间隙配置是根据所述第一候选主节点的待测频点和所述候选辅节点的待测频点确定的，所述方法还包括：
    所述源主节点根据所述第二测量间隙配置确定所述第一测量间隙配置；
    所述源主节点向源辅节点发送所述第一测量间隙配置和测量间隙类型，所述测量间隙类型包括针对所述终端设备配置的测量间隙类型或针对频率范围配置的测量间隙类型。
  4. 如权利要求1所述的方法，其特征在于，所述CHO请求响应还包括第三测量间隙配置，所述第三测量间隙配置是根据所述候选辅节点的待测频点中位于第二频率范围FR2内的频点配置的。
  5. 如权利要求1所述的方法，其特征在于，所述方法还包括：
    所述源主节点向源辅节点发送测量频点信息，所述测量频点信息指示所述候选辅节点的待测频点中位于FR2内的频点。
  6. 如权利要求4或5所述的方法，其特征在于，所述FR2的最低频率大于或等于24.25GHz，所述FR2的最高频率小于或等于52.6GHz。
  7. 如权利要求5或6所述的方法，其特征在于，所述方法还包括：
    所述源主节点根据所述候选辅节点的待测频点确定第四测量间隙配置，其中，所述候选辅节点的待测频点为位于第一频率范围FR1内的频点。
  8. 如权利要求1-7任一项所述的方法，其特征在于，所述CHO请求响应包括所述候选辅节点的标识和/或数据转发地址。
  9. 如权利要求1-7任一项所述的方法，其特征在于，所述第一RRC配置消息包括第二RRC配置消息和与所述第一候选主节点对应的第一执行触发条件；
    其中，所述第二RRC配置消息包括所述第一候选主节点的无线空口配置，所述候选辅节点的无线空口配置，以及，候选主辅小区PSCell对应的第二执行触发条件，且，所述第一RRC配置消息中除所述第二RRC配置消息之外的信元中还包括所述候选PSCell的标识信息和所述第二执行触发条件；或者，
    所述第二RRC配置消息包括所述第一候选主节点的无线空口配置，所述候选辅节点的无线空口配置，以及，候选PSCell对应的第二执行触发条件，且，所述第一RRC配置消息中除所述第二RRC配置消息之外的信元中不包括所述候选PSCell的标识信息和所述第二执行触发条件；或者，
    所述第二RRC配置消息包括所述第一候选主节点的无线空口配置，所述候选辅节点的无线空口配置，且所述第二RRC配置消息中不包括候选PSCell对应的第二执行触发条件，且，所述第一RRC配置消息中除所述第二RRC配置消息之外的信元中还包括所述候选PSCell的标识信息和所述第二执行触发条件；
    其中，所述候选PSCell由所述候选辅节点管理。
  10. 一种测量配置方法，其特征在于，包括：
    候选主节点接收源主节点发送的条件切换CHO请求；
    所述候选主节点向候选辅节点发送条件主辅小区添加CPA或者条件主辅小区改变CPC请求；
    所述候选主节点接收所述候选辅节点发送的CPA或者CPC请求响应，所述CPA或者CPC请求响应包括所述候选辅节点的待测频点；
    所述候选主节点向所述源主节点发送CHO请求响应，所述CHO请求响应包括CHO配置、第一条件主辅小区增加和改变CPAC配置和候选辅节点的待测频点。
  11. 如权利要求10所述的方法，其特征在于，所述CHO请求响应包括的所述候选辅节点的待测频点为所述候选辅节点的所有待测频点。
  12. 如权利要求10-11任一项所述的方法，其特征在于，所述CHO请求响应包括所述候选辅节点的标识和/或数据转发地址。
  13. 如权利要求10-12任一项所述的方法，其特征在于，所述方法还包括：
    所述候选主节点根据所述候选辅节点的待测频点确定测量间隙配置；
    所述候选主节点向所述源主节点发送所述测量间隙配置。
  14. 一种通信装置，其特征在于，包括收发模块和处理模块；
    其中，所述收发模块用于向一个或多个候选主节点发送条件切换CHO请求，以及接收第一候选主节点发送的CHO请求响应，所述CHO请求响应包括CHO配置和候选辅节点的待测频点，所述第一候选主节点属于所述一个或多个候选主节点；
    所述处理模块用于确定第一无线资源控制RRC配置消息，所述第一RRC配置消息包括所述CHO配置和测量配置，所述测量配置由所述通信装置根据所述CHO请求响应确定，所述测量配置包括测量对象和所述测量对象对应的第一测量间隙配置；
    所述收发模块还用于向终端设备发送所述第一RRC配置消息。
  15. 如权利要求14所述的装置，其特征在于，
    所述处理模块还用于：根据所述测量对象确定所述第一测量间隙配置；
    所述收发模块还用于向源辅节点发送所述第一测量间隙配置和测量间隙类型，所述测量间隙类型包括针对所述终端设备配置的测量间隙类型或针对频率范围配置的测量间隙类型。
  16. 如权利要求14所述的装置，其特征在于，所述CHO请求响应还包括第二测量间隙配置，所述第二测量间隙配置是根据所述第一候选主节点的待测频点和所述候选辅节点的待测频点确定的，所述处理模块还用于：根据所述第二测量间隙配置确定所述第一测量间隙配置；所述收发模块还用于向源辅节点发送所述第一测量间隙配置和测量间隙类型，所述测量间隙类型包括针对所述终端设备配置的测量间隙类型或针对频率范围配置的测量间隙类型。
  17. 如权利要求14所述的装置，其特征在于，所述CHO请求响应还包括第三测量间隙配置，所述第三测量间隙配置根据所述候选辅节点的待测频点中位于第二频率范围FR2内的频点配置的。
  18. 如权利要求14所述的装置，其特征在于，所述收发模块还用于：向源辅节点发送测量频点信息，所述测量频点信息指示所述候选辅节点的待测频点中位于FR2内的频点。
  19. 如权利要求17或18所述的装置，其特征在于，所述FR2的最低频率大于或等于24.25GHz，所述FR2的最高频率小于或等于52.6GHz。
  20. 如权利要求18或19所述的装置，其特征在于，所述处理模块还用于：根据所述候选辅节点的待测频点确定第四测量间隙配置，其中，所述候选辅节点的待测频点为位于第一频率范围FR1的频点。
  21. 如权利要求14-20任一项所述的装置，其特征在于，所述CHO请求响应包括所述候选辅节点的标识和/或数据转发地址。
  22. 如权利要求14-21任一项所述的装置，其特征在于，所述第一RRC配置消息包括第二RRC配置消息和与所述第一候选主节点对应的第一执行触发条件；
    其中，所述第二RRC配置消息包括所述第一候选主节点的无线空口配置，所述候选辅节点的无线空口配置，以及，候选主辅小区PSCell对应的第二执行触发条件，且，所述第一RRC配置消息中除所述第二RRC配置消息之外的信元中还包括所述候选PSCell的标识信息和所述第二执行触发条件；或者，
    所述第二RRC配置消息包括所述第一候选主节点的无线空口配置，所述候选辅节点的无线空口配置，以及，候选PSCell对应的第二执行触发条件，且，所述第一RRC配置消息中除所述第二RRC配置消息之外的信元中不包括所述候选PSCell的标识信息和所述第二执行触发条件；或者，
    所述第二RRC配置消息包括所述第一候选主节点的无线空口配置，所述候选辅节点的无线空口配置，且所述第二RRC配置消息中不包括候选PSCell对应的第二执行触发条件，且，所述第一RRC配置消息中除所述第二RRC配置消息之外的信元中还包括所述候选PSCell的标识信息和所述第二执行触发条件；
    其中，所述候选PSCell由所述候选辅节点管理。
  23. 一种通信装置，其特征在于，包括收发模块和处理模块；
    其中，所述收发模块用于接收源主节点发送的条件切换CHO请求，向候选辅节点发送条件主辅小区添加CPA或者条件主辅小区改变CPC请求，以及接收所述候选辅节点发送的CPA或者CPC请求响应，所述CPA或者CPC请求响应包括所述候选辅节点的待测频点；
    所述处理模块用于确定CHO请求响应，所述CHO请求响应包括CHO配置、第一条件主辅小区的增加和改变CPAC配置和候选辅节点的待测频点；
    所述收发模块还用于向所述源主节点发送CHO请求响应，所述CHO请求响应包括CHO配置、第一CPAC配置和所述候选辅节点的待测频点。
  24. 如权利要求23所述的装置，其特征在于，所述CHO请求响应包括的所述候选辅节点的待测频点为所述候选辅节点的所有待测频点。
  25. 如权利要求23-24任一项所述的装置，其特征在于，所述CHO请求响应包括所述候选辅节点的标识和/或数据转发地址。
  26. 如权利要求23-25任一项所述的装置，其特征在于，所述处理模块还用于：根据所述候选辅节点的待测频点确定测量间隙配置；
    所述收发模块还用于向所述源主节点发送所述测量间隙配置。
  27. 一种通信装置，其特征在于，包括处理器和存储器；其中，所述存储器用于存储一个或多个计算机程序，所述一个或多个计算机程序包括计算机执行指令，当所述通信装置运行时，所述处理器执行所述存储器存储的所述一个或多个计算机程序，以使得所述通信装置执行如权利要求1～9中任一项所述的方法，或使得所述通信装置执行如权利要求10～13中任一项所述的方法。
  28. 一种通信系统，其特征在于，所述系统包括源主节点和候选主节点，所述源主节点用于实现如权利要求1～9中任一项所述的方法，所述候选主节点用于实现权利要求10～13中任一项所述的方法。
  29. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质用于存储计算机程序，当所述计算机程序在计算机上运行时，使得所述计算机执行如权利要求1～9中任一项所述的方法，或使得所述计算机执行如权利要求10～13中任一项所述的方法。
  30. 一种计算机程序产品，其特征在于，所述计算机程序产品包括计算机程序，当所述计算机程序在计算机上运行时，使得所述计算机执行如权利要求1～9中任一项所述的方法，或使得所述计算机执行如权利要求10～13中任一项所述的方法。
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