Mobility handover method, apparatus, electronic device, and computer program product

Abstract

The present invention relates to the technical field of wireless communications, and in particular to a mobility handover method, an apparatus, an electronic device, and a computer program product. The method comprises: sending a first message to a terminal device, wherein the first message is used for instructing the terminal device to perform state or function conversion, and the terminal device is in a power saving state or has enabled a power saving function.

Description

Mobility switching method and apparatus, electronic device, and computer program product

[0001] Cross-reference to Related Applications

[0002] The present disclosure claims priority to Chinese Patent Application No. 202411939635.8, filed on December 26, 2024, the contents of which are incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present disclosure relates to the technical field of wireless communication, and particularly relates to a mobility switching method, apparatus, electronic device, and computer program product. BACKGROUND

[0004] At present, when a terminal device (User Equipment, UE) in an energy saving state has data to be transmitted, the UE generally performs cell reselection. However, during the reselection process, the UE needs to perform a series of signaling interactions and cell switching operations with the network, which may cause a short interruption or delay and result in transmission performance loss.

[0005] In addition, energy saving is an important consideration in the design of future communication systems. How to complete mobility switching in the case of deep energy saving has not been clearly defined. SUMMARY

[0006] The present disclosure is proposed in view of the above problems. The present disclosure provides a mobility switching method, apparatus, electronic device, and computer program product.

[0007] According to one aspect of the present disclosure, a mobility switching method is provided, applied to a first network device, wherein the method comprises: sending a first message to a terminal device, wherein the first message is used to instruct the terminal device to perform state or function conversion, and the terminal device is in an energy saving state or has an energy saving function enabled.

[0008] In addition, according to the mobility switching method of one aspect of the present disclosure, wherein the first message is sent to the terminal device, comprising: based on the received first measurement result and / or state or function conversion request sent by the terminal device and / or the obtained state of the second network device and / or the state of the first network device, the first message is sent to the terminal device, wherein the first measurement result is generated based on the first signal measurement.

[0009] In addition, according to the mobility switching method of one aspect of the present disclosure, wherein the method further comprises: receiving a second message sent by the terminal device, wherein the second message is used to confirm the state or function conversion.

[0010] Further, the mobility switching method according to one aspect of the present disclosure, wherein the second message comprises at least one of: a radio resource control (RRC) message; a medium access control (MAC) CE message; a signal and / or sequence for achieving the energy saving purpose; and information for indicating the feedback by the first network device.

[0011] Further, the mobility switching method according to one aspect of the present disclosure, wherein the method further comprises:

[0012] After the terminal device switches to the connected state, a third message is sent to the second network device, wherein the third message is used to request the mobility switching.

[0013] Further, the mobility switching method according to one aspect of the present disclosure, wherein after the terminal device switches to the connected state, the third message is sent to the second network device, comprising: after the terminal device switches to the connected state, the third message is sent to the second network device based on the received first measurement result and / or the second measurement result sent by the terminal device, wherein the second measurement result is generated based on the second signal measurement.

[0014] According to one aspect of the present disclosure, a mobility switching method is provided, applied to a terminal device, wherein the method comprises: receiving a first message sent by a first network device, wherein the first message is used to instruct the terminal device to switch a state or a function, and the terminal device is in an energy saving state or an energy saving function is enabled.

[0015] Further, the mobility switching method according to one aspect of the present disclosure, wherein the method further comprises: sending a first measurement result generated based on a first signal measurement to the first network device.

[0016] Further, the mobility switching method according to one aspect of the present disclosure, wherein the method further comprises: sending a state or function switching request to the first network device based on the first measurement result and / or a preset threshold.

[0017] Further, the mobility switching method according to one aspect of the present disclosure, wherein the method further comprises: sending a second message to the first network device, wherein the second message is used to confirm the state or function switching.

[0018] Further, the mobility switching method according to one aspect of the present disclosure, wherein the second message comprises at least one of: a radio resource control (RRC) message; a medium access control (MAC) CE message; a signal and / or sequence for achieving the energy saving purpose; and information for indicating the feedback by the first network device.

[0019] Further, the mobility switching method according to one aspect of the present disclosure, wherein the method further comprises: after the terminal device switches to the connected state, sending a second measurement result generated based on a second signal measurement to the first network device.

[0020] According to an aspect of the present disclosure, a mobility switching method is provided, applied to a first network device, and the method comprises: sending a fourth message to a terminal device, wherein the fourth message comprises energy saving configuration information of at least one third network device.

[0021] In addition, according to the mobility switching method of one aspect of the present disclosure, wherein the fourth message is sent to the terminal device, comprising: when the terminal device is in the energy saving state or the energy saving function is turned on, at least one fourth message is sent to the terminal device based on the first signal, wherein the energy saving configuration information of one third network device or the second network device is included in one fourth message.

[0022] In addition, according to the mobility switching method of one aspect of the present disclosure, wherein the fourth message is sent to the terminal device, further comprising: when the terminal device is in the connected state, at least one fourth message is sent to the terminal device based on the first signal and / or the second signal, wherein the fourth message comprises the energy saving configuration information and / or the state or function conversion indication of the third network device.

[0023] In addition, according to the mobility switching method of one aspect of the present disclosure, wherein the method further comprises: when the terminal device is in the connected state, and the fourth message only comprises the energy saving configuration information of the third network device corresponding to the first signal, sending a first message to the terminal device, wherein the first message is used to instruct the terminal device to perform state or function conversion.

[0024] In addition, according to the mobility switching method of one aspect of the present disclosure, wherein the fourth message sent based on the first signal comprises: a low-power sequence.

[0025] In addition, according to the mobility switching method of one aspect of the present disclosure, wherein the method further comprises: sending a third message to at least one third network device, wherein the third message is used to request mobility switching, and the third message comprises energy saving capability information of the terminal device.

[0026] In addition, according to the mobility switching method of one aspect of the present disclosure, wherein the method further comprises: receiving a fifth message sent by at least one third network device, wherein the fifth message comprises energy saving capability information and / or energy saving configuration information of the third network device.

[0027] In addition, according to the mobility switching method of one aspect of the present disclosure, wherein the energy saving configuration information comprises at least one of the following: configuration information of the second network device; condition switching configuration information of the energy saving state; layer 1 / layer 2 triggered mobility switching configuration information of the energy saving state; network triggered mobility switching configuration information.

[0028] Further, the mobility switching method according to one aspect of the present disclosure, wherein the method further comprises: when the energy saving configuration information is the layer 1 / layer 2 triggered mobility switching configuration information and / or the network triggered mobility switching configuration information in the energy saving state, sending a mobility switching indication and / or a state or function conversion indication to the terminal device based on the first signal.

[0029] According to one aspect of the present disclosure, a mobility switching method is provided, applied to a terminal device, wherein the method comprises: receiving a fourth message sent by a first network device, wherein the fourth message comprises energy saving configuration information of at least one third network device.

[0030] Further, the mobility switching method according to one aspect of the present disclosure, wherein receiving the fourth message sent by the first network device comprises: when the terminal device is in the energy saving state or the energy saving function is turned on, receiving at least one fourth message sent by the first network device based on the first signal, wherein the energy saving configuration information of one third network device or the second network device is included in one fourth message.

[0031] Further, the mobility switching method according to one aspect of the present disclosure, wherein receiving the fourth message sent by the first network device further comprises: when the terminal device is in the connected state, receiving the fourth message sent by the first network device based on the first signal and / or the second signal, wherein the fourth message comprises the energy saving configuration information of the third network device and / or the state or function conversion indication.

[0032] Further, the mobility switching method according to one aspect of the present disclosure, wherein the method further comprises: when the terminal device is in the connected state, receiving the first message sent by the first network device, wherein the first message is used to instruct the terminal device to convert the state or function.

[0033] Further, the mobility switching method according to one aspect of the present disclosure, wherein the fourth message sent based on the first signal comprises: a low power consumption sequence.

[0034] Further, the mobility switching method according to one aspect of the present disclosure, wherein the method further comprises: when the terminal device is in the energy saving state or the energy saving function is turned on, performing measurement and / or mobility switching based on the energy saving configuration information corresponding to the first signal.

[0035] Further, the mobility switching method according to one aspect of the present disclosure, wherein the method further comprises: when the terminal device is in the connected state, performing measurement and / or mobility switching and / or state or function conversion based on the energy saving configuration information corresponding to the second signal and / or the first signal.

[0036] Further, the mobility switching method according to one aspect of the present disclosure, wherein the method further comprises: when the terminal device is in the connected state and the first message is received, performing state or function conversion.

[0037] Further, the mobility switching method according to one aspect of the present disclosure, wherein the energy saving configuration information comprises at least one of: configuration information of the second network device; condition switching configuration information of the energy saving state; layer 1 / layer 2 triggered mobility switching configuration information of the energy saving state; network triggered mobility switching configuration information.

[0038] Further, the mobility switching method according to one aspect of the present disclosure, wherein performing mobility switching comprises at least one of: when the energy saving configuration information is the configuration information of the second network device, performing mobility switching; when the energy saving configuration information is the condition switching configuration information of the energy saving state, performing mobility switching based on the third measurement result of the first signal and a preset condition; when the energy saving configuration information is the layer 1 / layer 2 triggered mobility switching configuration information of the energy saving state and / or the network triggered mobility switching configuration information, sending a fourth measurement result based on the first signal to the first network device.

[0039] Further, the mobility switching method according to one aspect of the present disclosure, wherein the method further comprises: when the energy saving configuration information is the layer 1 / layer 2 triggered mobility switching configuration information of the energy saving state and / or the network triggered mobility switching configuration information, receiving a mobility switching indication and / or a state or function conversion indication sent by the first network device based on the first signal.

[0040] According to another aspect of the present disclosure, a mobility switching apparatus is provided, the apparatus comprising: a sending module configured to send a first message to a terminal device, wherein the first message is used to instruct the terminal device to perform state or function conversion, and the terminal device is in an energy saving state or has an energy saving function enabled.

[0041] According to another aspect of the present disclosure, a mobility switching apparatus is provided, the apparatus comprising: a receiving module configured to receive a first message sent by a first network device, wherein the first message is used to instruct a terminal device to perform state or function conversion, and the terminal device is in an energy saving state or has an energy saving function enabled.

[0042] According to another aspect of the present disclosure, a mobility switching apparatus is provided, the apparatus comprising: a sending module configured to send a fourth message to a terminal device, wherein the fourth message comprises energy saving configuration information of at least one third network device.

[0043] According to another aspect of the present disclosure, a mobility switching apparatus is provided, the apparatus comprising: a receiving module configured to receive a fourth message sent by a first network device, wherein the fourth message comprises energy saving configuration information of at least one third network device.

[0044] According to yet another aspect of the present disclosure, an electronic device is provided, comprising: a memory for storing computer readable instructions; and a processor for running the computer readable instructions, so that the electronic device performs the mobility switching method as described above.

[0045] According to still another aspect of the present disclosure, a computer program product is provided, comprising a computer program, wherein the computer program, when executed by a processor, implements the mobility switching method as described above.

[0046] As will be described in detail below, according to the mobility switching method of the embodiments of the present disclosure, the present disclosure proposes to perform state conversion in advance for a terminal device in an energy saving state or with an energy saving function turned on, so as to reduce the transmission performance loss caused by mobility; and to provide configuration in advance for the terminal device, so that the terminal device can be kept in an energy saving state and / or switched to an energy saving state, and mobility switching of the terminal device and / or network in a deep energy saving case is realized through low-power signal interaction.

[0047] It is to be understood that both the foregoing general description and the following detailed description are exemplary, and are intended to provide further explanation of the subject technology. BRIEF DESCRIPTION OF DRAWINGS

[0048] The foregoing and other objects, features and advantages of the present disclosure will become more apparent from the following detailed description, which proceeds with reference to the accompanying drawings. The drawings are provided to illustrate embodiments of the present disclosure and, together with the detailed description, serve to explain the present disclosure and do not constitute a limitation thereof. In the drawings, like reference numerals refer to like elements or steps throughout.

[0049] FIG. 1 is a scenario schematic diagram illustrating an application scenario of the mobility switching method according to an embodiment of the present disclosure.

[0050] FIG. 2 is a method flowchart illustrating the mobility switching method according to an embodiment of the present disclosure.

[0051] FIG. 3 is a method flowchart further illustrating the mobility switching method according to an embodiment of the present disclosure.

[0052] FIG. 4 is a whole flowchart illustrating the mobility switching method according to an embodiment of the present disclosure.

[0053] FIG. 5 is a method flowchart further illustrating the mobility switching method according to an embodiment of the present disclosure.

[0054] FIG. 6 is a method flowchart further illustrating the mobility switching method according to an embodiment of the present disclosure.

[0055] FIG. 7 is a whole flow chart further illustrating the mobility switching method according to an embodiment of the present disclosure.

[0056] FIG. 8 is a device schematic diagram illustrating the mobility switching apparatus according to an embodiment of the present disclosure.

[0057] FIG. 9 is a device schematic diagram further illustrating the mobility switching apparatus according to an embodiment of the present disclosure.

[0058] FIG. 10 is a device schematic diagram further illustrating the mobility switching apparatus according to an embodiment of the present disclosure.

[0059] FIG. 11 is a device schematic diagram further illustrating the mobility switching apparatus according to an embodiment of the present disclosure.

[0060] FIG. 12 is a hardware block diagram illustrating an electronic device according to an embodiment of the present disclosure.

[0061] FIG. 13 is a schematic diagram illustrating a computer program product according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0062] In order to make the purposes, technical solutions and advantages of the present disclosure more obvious, the example embodiments according to the present disclosure will be described in detail below with reference to the drawings. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments of the present disclosure, and it should be understood that the present disclosure is not limited to the example embodiments described herein.

[0063] First, referring to FIG. 1, an application scenario according to an embodiment of the present disclosure is outlined.

[0064] FIG. 1 is a scenario schematic diagram illustrating an application scenario of the mobility switching method according to an embodiment of the present disclosure. As shown in FIG. 1, the application scenario at least includes: a terminal device (for example, UE 10), one or more network devices (for example, a serving cell 11, a target cell 12, a candidate cell 13).

[0065] Among them, the terminal device can be mobile or fixed. One or more network devices are devices that can communicate with the terminal device through a wireless link. The network device can cover a cell and provide network services for the cell, and can communicate with the terminal device located in the corresponding covered cell, so the network device is also sometimes referred to as a cell.

[0066] It is worth noting that the technology described in the embodiments of the present disclosure is not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency Division Multiple Access (SC-FDMA) or other systems. The terms "system" and "network" in the embodiments of the present disclosure are often used interchangeably, and the described technology can be used in the above-mentioned systems and radio technologies, as well as in other systems and radio technologies. The following description describes a New Radio (NR) system for the purpose of example, and NR terminology is used in most of the following description, but these technologies can also be applied to systems other than the NR system, such as a 6th Generation (6G) communication system.

[0067] Terminal devices can include mobile phones, tablet computers, laptop computers, laptops, personal digital assistants (PDAs), handheld computers, netbooks, ultra-mobile personal computers (UMPCs), mobile internet devices (MIDs), augmented reality (AR) and virtual reality (VR) devices, robots, wearable devices, flight vehicles, vehicle user equipment (VUEs), shipboard equipment, pedestrian user equipment (PUEs), smart home devices (home appliances with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), game consoles, personal computers (PCs), ATMs, and self-service machines. Wearable devices include smartwatches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart chains, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, and smart clothing. The vehicle-mounted device can also be referred to as a vehicle-mounted terminal, vehicle-mounted controller, vehicle-mounted module, vehicle-mounted component, vehicle-mounted chip, or vehicle-mounted unit, etc. It should be noted that the specific type of terminal device is not limited in the embodiments disclosed herein.

[0068] Network equipment can be a device that communicates with terminal devices. Specifically, network equipment can provide communication coverage within a certain area and communicate with terminals located within that area. Optionally, network equipment can be a base station in various communication systems, such as an evolved Node B (eNB) in an LTE system, or a base station (such as an NR Node B (gNB)) in a 5G or NR system. It can also be a gNB Centralized Unit (gNB-CU) or a gNB Distributed Unit (gNB-DU).

[0069] The base station can be gNB, gNB-CU, gNB-DU, or any other suitable term in the field, as long as the same technical effect is achieved. The base station is not limited to specific technical terms. It should be noted that the embodiments of this disclosure only use the base station in the NR system as an example for introduction, and do not limit the specific type of base station.

[0070] During the movement of UE10, in order to ensure smooth communication, a mobility handover will occur, i.e., switching from the current serving cell 11 to the target cell 12 or the candidate cell 13. Therefore, in this disclosure, the network equipment is further subdivided into a first network equipment, a second network equipment, and a third network equipment. Among them, the first network equipment can be understood as the serving base station, the source base station, the serving cell, etc., that is, the cell that UE10 is currently connecting to and communicating with; the second network equipment can be understood as the target cell, that is, the cell that UE10 is about to hand over to or reselect, which is called the target cell. The target cell is usually selected from the candidate cells according to certain criteria (such as signal strength, quality, cell load, etc.); the third network equipment can be understood as the candidate cell, that is, the cells around UE10 that may become the target cell. These cells are usually the neighboring cells of the serving cell, and UE10 will perform signal measurement and evaluation on them.

[0071] Mobility handover can include traditional handover (HO), Layer-1 / Layer-2 Triggered Mobility (LTM), Conditional Handover (CHO), and other handover mechanisms.

[0072] Among them, HO is a traditional handover method, which is a handover process triggered and controlled by the network based on the measurement report reported by UE10 and a series of predefined handover criteria (such as thresholds).

[0073] LTM refers to mobility handover triggered by the physical layer (i.e., layer 1) or the data link layer (i.e., layer 2). In wireless communication systems, when the aforementioned network equipment is a base station (e.g., gNB), the terminal equipment will handover between different cells. Based on the base station to which the cells belong before and after the handover, LTM handover can be performed between different cells within the same base station (intra-gNB) or between cells of different base stations (inter-gNB).

[0074] CHO (Cross-House Handover) is a handover method where handover conditions are predefined for UE10 during the network configuration phase. These conditions can be based on UE10's location, signal strength, quality, and other relevant parameters. For example, the network can configure UE10 with the following condition: when UE10's location is close to the boundary between two cells, and a certain measurement value of the serving cell and the target cell simultaneously reaches a preset standard, UE10 can autonomously trigger a handover to the target cell without waiting for further instructions from the network. The mobility handover method of this disclosure according to embodiments will be described in detail below with reference to Figures 2-7.

[0075] Figure 2 is a flowchart illustrating a mobility handover method according to an embodiment of the present disclosure. As shown in Figure 2, the mobility handover method applied to a first network device may include at least the following steps.

[0076] In step S201, a first message is sent to the terminal device, wherein the first message is used to instruct the terminal device to perform a state or function switch, and the terminal device is in energy-saving state or has the energy-saving function enabled.

[0077] As described above, this disclosure aims to address the problem of transmission performance loss caused by existing cell reselection methods when a UE10 in energy-saving mode requires data transmission during mobility. To address this, this disclosure proposes an early state transition method, which involves prematurely transitioning a UE in energy-saving mode or with energy-saving functionality enabled to connected mode before performing mobility handover, thereby reducing transmission performance loss.

[0078] Specifically, the serving cell 11 can send a first message to the UE10, which is currently in energy-saving mode or has energy-saving function enabled. The first message is used to instruct the UE10 to perform a state or function transition.

[0079] Furthermore, the serving cell 11 may decide to send the aforementioned first message to the UE10, which is in power-saving mode or has power-saving function enabled, based on the first measurement result and / or state or function transition request received from the UE10 and / or the state of the target cell 12 and / or its own state. This will be described in detail in Figure 4.

[0080] Figure 3 is a flowchart further illustrating a mobility handover method according to an embodiment of the present disclosure. As shown in Figure 3, the mobility handover method applied to a terminal device may include at least the following steps.

[0081] In step S301, a first message sent by the first network device is received. This first message instructs the terminal device to perform a state or function transition, indicating that the terminal device is in a power-saving state or has its power-saving function enabled. This step can be understood as the opposite action to step S201 described above, and will be further detailed in Figure 4.

[0082] Figure 4 is an overall flowchart illustrating a mobility handover method according to an embodiment of the present disclosure. As shown in Figure 4, the entities involved in the mobility handover method according to this embodiment of the present disclosure may include at least: a terminal device (e.g., UE 10), a first network device (e.g., serving cell 11 or serving base station 11), and a second network device (e.g., target cell 12 or target base station 12). The specific process is as follows:

[0083] S4-0, The terminal device sends a first measurement result to the first network device, wherein the first measurement result is generated based on the first signal measurement.

[0084] In one embodiment of this disclosure, the first signal may be a low-power signal.

[0085] As mentioned above, UE10 is in power-saving mode or has power-saving function enabled at this time, and cannot interact through high-power signals. It can perform measurements based on low-power signals and generate the corresponding first measurement result.

[0086] Furthermore, the first measurement result may include, but is not limited to, relevant indicators such as signal strength (e.g., Reference Signal Received Power (RSRP)), signal quality (e.g., Reference Signal Received Quality (RSRQ), Signal-to-noise and interference ratio (SINR)), and cell load of the serving cell 11 and / or neighboring cells (e.g., target cell 12), and this disclosure does not limit the specific details; the first measurement result may be a measurement report, etc., and this disclosure does not limit the specific form.

[0087] S4-1. The terminal device sends a status or function transition request to the first network device. Specifically, UE10 may send a status or function transition request to the serving cell 11 based on the first measurement result and / or a preset threshold, wherein the preset threshold can be understood as a threshold value.

[0088] In one embodiment of this disclosure, the preset threshold can be understood as a threshold value for a certain indicator (e.g., RSRP) in the above measurement. When the measured value of the indicator in the first measurement result received in step S4-0 is less than the threshold value, UE10 sends the state or function transition request to serving cell 11.

[0089] In another embodiment of this disclosure, the preset threshold can be understood as a time limit. When the duration of UE10 in power-saving mode or with power-saving function enabled reaches a certain threshold, UE10 sends a state or function switching request to serving cell 11.

[0090] It is worth noting that when UE10 is in power-saving mode or the duration of power-saving function is enabled reaches a certain threshold, UE10 may send a notification and / or indication to serving cell 11 instead of a request message. In other words, when the duration reaches a certain threshold, UE can switch to connected mode on its own, but it needs to notify and / or indicate to serving cell 11 in order to synchronize its state with the network.

[0091] It should be noted that step S4-1 is an optional step, as described in step S4-2.

[0092] S4-2. The first network device sends a first message to the terminal device, wherein the first message is used to instruct the terminal device to perform a state or function switch, and the terminal device is in energy-saving state or has the energy-saving function enabled.

[0093] As described above, step S4-1 is an optional step. That is, the prerequisite for serving cell 11 to send the first message to UE 10 can be receiving the aforementioned state or function transition request, an instruction from UE 10, or the obtained state of target cell 12 and / or the state of serving cell 11 itself. Based on the aforementioned first measurement result and / or request and / or instruction and / or the state of target cell 12 and / or the state of serving cell 11 itself, serving cell 11 makes a state transition decision and then sends the first message to UE 10, notifying it to perform a state or function transition.

[0094] In one embodiment of this disclosure, the state of the target cell 12 may be whether it supports an energy-saving mechanism or is in an energy-saving state, and / or whether it is in an energy-saving state or has its energy-saving function enabled; the state of the serving cell 11 itself may be whether it has enabled or disabled its energy-saving mechanism, and / or whether it expects to enable or disable its energy-saving mechanism.

[0095] S4-3. The terminal device sends a second message to the first network device, wherein the second message is used to confirm the state or function transition.

[0096] In other words, UE10 can perform a feedback handshake with serving cell 11 to confirm that a state transition or function switch has been performed. The feedback information (i.e., the second message) may include at least one of the following: Radio Resource Control (RRC) message, Medium Access Control (MAC) Control Element (CE) message, signals and / or sequences for energy saving purposes, and feedback information indicated by the first network device (e.g., a certain signal feedback based on network indication; for example, the UE10 feedback type indication can be carried in the aforementioned first message, and UE10 provides feedback based on this indication).

[0097] It should be noted that step S4-3 is an optional step.

[0098] S4-4. The terminal device sends a second measurement result to the first network device, wherein the second measurement result is generated based on the second signal measurement.

[0099] In one embodiment of this disclosure, the second signal may be a high-power signal.

[0100] As described above, UE10 has switched to the connected state (either based on the feedback handshake in S4-3 or after the default duration). At this time, UE10 can perform measurements based on the high-power signal and generate the corresponding second measurement result. Similar to the first measurement result, this disclosure does not limit the indicators included in the second measurement result; nor does it limit the specific form of the second measurement result.

[0101] In one embodiment of this disclosure, the second measurement result may be measured and reported by UE10 after receiving the first message and completing the conversion. That is, the first message may be a new condition that triggers UE10 to perform measurement and report based on the high-power signal. The measurement-related configuration of the high-power signal may be pre-configured to UE10 by the network, or it may be carried in the first message.

[0102] It should be noted that step S4-4 is an optional step.

[0103] S4-5. The first network device sends a third message to the second network device, wherein the third message is used to request mobility handover.

[0104] Specifically, after UE10 transitions to the connected state, the serving cell 11 sends a third message to the target cell 12 to request mobility handover. The serving cell 11 may decide to send a handover request (i.e., the third message) to the target cell 12 to access the target cell 12 based on a first measurement result provided by low-power signal measurement before the UE10 state transition (i.e., in power-saving mode or with power-saving function enabled) and / or a second measurement result provided by high-power signal measurement after the UE10 state transition (i.e., in the connected state).

[0105] S4-6, The second network device sends a handover request confirmation to the first network device.

[0106] In S4-7 to S4-8, the serving cell 11 sends an RRC reconfiguration to UE10 to instruct it to perform a handover. UE10 performs the handover and sends an RRC reconfiguration completion message to the target cell 12.

[0107] Optionally, after UE10 completes the handover and accesses the target cell 12, the target cell can enable energy-saving functions for UE10 to reduce energy consumption.

[0108] This concludes the description of the entire process for pre-transitioning UEs in energy-saving mode or with energy-saving functions enabled, as proposed in this disclosure, to reduce transmission performance loss due to mobility. However, this method may increase UE power consumption because it requires the UE to return to connected mode. As mentioned above, energy saving is an important consideration in the design of future communication systems. The following section, in conjunction with Figures 5-7, will introduce another method that enables mobility handover while achieving deep energy savings.

[0109] Figure 5 is a flowchart further illustrating a mobility handover method according to an embodiment of the present disclosure. As shown in Figure 5, the mobility handover method applied to a first network device may include at least the following steps.

[0110] In step S501, a fourth message is sent to the terminal device, wherein the fourth message includes energy-saving configuration information of at least one third network device. As described above, this figure will introduce a more energy-efficient method. Specifically, a method of providing configuration in advance can be proposed, allowing UE10 to remain in an energy-saving state and / or switch to an energy-saving state, and to achieve mobility handover through low-power signal interaction. The method of providing configuration in advance can be that the serving cell 11 sends a fourth message to UE10, which includes energy-saving configuration information of one or more candidate cells 13. Depending on the handover method, the energy-saving configuration information may include at least one of the following: configuration information of the target cell 12, conditional handover configuration information in the energy-saving state, mobility handover configuration information triggered by Layer 1 / Layer 2 in the energy-saving state, network-triggered mobility handover configuration information, etc. This will be described in further detail with reference to Figure 7.

[0111] Figure 6 is a flowchart further illustrating a mobility handover method according to an embodiment of the present disclosure. As shown in Figure 6, the mobility handover method applied to a terminal device may include at least the following steps.

[0112] In step S601, a fourth message sent by the first network device is received, wherein the fourth message includes energy-saving configuration information of at least one third network device. This step can be understood as the opposite action of step S501 above, and similarly, it will be described in detail in Figure 7.

[0113] Figure 7 is a flowchart further illustrating the overall process of the mobility handover method according to an embodiment of the present disclosure. As shown in Figure 7, the entities involved in the mobility handover method according to the embodiment of the present disclosure may include at least: a terminal device (e.g., UE 10), a first network device (e.g., serving cell 11 or serving base station 11), and a third network device (e.g., candidate cell 13 or candidate base station 13, specifically candidate cells 13-1...candidate cells 13-n as shown in Figure 7, i.e., n candidate cells 13). The specific process is as follows:

[0114] S7-0, The terminal device sends the measurement result to the first network device, wherein the measurement result is generated based on the measurement of the first signal and / or the second signal, and the terminal device may be in power-saving mode or have power-saving function enabled, or be in connected mode.

[0115] Specifically, UE10 performs measurements based on network configuration. Since UE10 can be in either power-saving or connected mode, the measurement can be based on a high-power signal (i.e., the second signal) and / or a low-power signal (i.e., the first signal). The specific signal that UE10 uses for measurement can be determined based on the network configuration.

[0116] In one embodiment of this disclosure, the configuration may be a time-domain or frequency-domain configuration for transmitting high-power or low-power signals, and / or conditions for measuring the corresponding signals. For example, measurement of the low-power signal may be initiated only if the high-power signals RSRP and / or RSRQ meet a certain threshold.

[0117] S7-1, The first network device determines the mobility handover decision.

[0118] In one embodiment of this disclosure, the mobility handover decision may be generated based on the measurement results in step S7-0.

[0119] S7-2, The first network device sends a third message to at least one third network device, wherein the third message is used to request mobility handover and includes power saving capability information of the terminal device.

[0120] Specifically, the third message may be a handover request, which the serving cell 11 may send to one or more of the candidate cells 13-1 to 13-n. The handover request may be implemented through existing handover commands and may additionally indicate the power-saving capability information of UE10 (e.g., the power-saving function or power-saving state capability of UE10).

[0121] S7-3. At least one third network device performs access control. Specifically, candidate cell 13, having received the aforementioned third message, will make an access control decision and may choose to accept or reject the handover request.

[0122] S7-4. At least one third network device sends a fifth message to the terminal device, wherein the fifth message includes energy-saving capability information and / or energy-saving configuration information of the third network device.

[0123] The fifth message can be a handover request confirmation. Specifically, after at least one candidate cell 13 selects to accept the handover request in step S7-3, it sends a handover request confirmation to the serving cell 11. This confirmation may include the candidate cell 13's own energy-saving capability information (e.g., support for energy-saving mode or energy-saving function) and / or energy-saving configuration information (e.g., configuration of energy-saving mode).

[0124] S7-5. The first network device sends a fourth message to the terminal device, wherein the fourth message includes power-saving configuration information of at least one third network device. The fourth message can be understood as mobility configuration. As mentioned above, since UE10 can be in both power-saving and connected states, the power-saving configuration information configured by the serving cell 11 for UE10 will differ depending on the state of UE10, as follows:

[0125] (1) When the terminal device is in power saving mode or the power saving function is enabled, the first network device sends at least one fourth message to the terminal device based on the first signal, wherein the fourth message includes power saving configuration information of a third network device or a second network device, wherein the fourth message sent based on the first signal includes: a low power sequence.

[0126] Specifically, as described above, the technical effect this disclosure aims to achieve is to complete the entire mobility handover process under deep energy saving conditions. Therefore, when UE10 is in energy-saving mode or has energy-saving function enabled, the network needs to perform configuration based on the low-power signal (i.e., the first signal) while it remains in energy-saving mode or with energy-saving function enabled, that is, to send the fourth message based on the low-power signal. Furthermore, since the number of bits carried by the low-power signal is limited, a single fourth message can only carry information about one candidate cell 13 or target cell 12. If there are multiple candidate cells 13, multiple fourth messages can be sent based on the low-power signal for configuration.

[0127] Furthermore, since the number of bits carrying information in a low-power signal is limited, once it carries the identifier (ID) of a candidate cell 13 or a target cell 12, other information may not be fully contained within the low-power signal. To address this, other information can be carried based on a predefined index in the protocol.

[0128] In one embodiment of this disclosure, the fourth message can be a Low Power (LP) sequence. Taking a 10-bit LP sequence as an example: the first 5 bits can be the ID of target cell 12 or candidate cell 13; the 5th and 6th bits can be the execution condition type (e.g., the execution condition is an LP measurement event, 00 can represent an LP-A3 event, 01 can represent an LP-A5 event, etc.); the following 3 bits represent the threshold corresponding to the event. For example, if the network is configured with 8 threshold values, the corresponding threshold can be represented by 3 binary bits.

[0129] Furthermore, the fourth message can be a cell change instruction. Since UE10 is already in power-saving mode, the instruction is an LP sequence, which directly carries the information of UE10's target cell 12 and may indicate the necessary information for access via LP signal.

[0130] (2) When the terminal device is in a connected state, the first network device sends at least one fourth message to the terminal device based on the first signal and / or the second signal, wherein the fourth message includes energy-saving configuration information and / or status or function switching indication of the third network device.

[0131] As mentioned above, when UE10 is in connected state, the network can be configured based on either a low-power signal (i.e., the first signal) or a high-power signal (i.e., the second signal). The candidate cells in the energy-saving configuration information based on these two configurations can be the same or different. This can be further subdivided as follows:

[0132] a) When the terminal device is in a connected state, and the first network device sends at least one fourth message to the terminal device based on the second signal, wherein the fourth message includes power-saving configuration information of the third network device. That is, the serving cell 11 sends a fourth message to UE 10 based on a high-power signal, wherein the fourth message may include information of one or more candidate cells 13.

[0133] It should be noted that high-power signals carry a lot of information, so the information of multiple candidate cells 13 can all be carried in a single fourth message.

[0134] b) When the terminal device is in a connected state, and the first network device sends at least one fourth message to the terminal device based on the first signal, wherein the fourth message includes power-saving configuration information and / or status and function transition indication of the third network device. That is, the serving cell 11 sends one or more fourth messages to the UE 10 based on the low-power signal, wherein one fourth message may include information of a candidate cell 13.

[0135] At this time, UE10 can directly perform execution or measurement based on the energy-saving configuration information; or, in order to save more energy, it can first switch to the energy-saving state based on the state and function conversion indication carried in the fourth message, and then perform execution or measurement based on the energy-saving configuration information.

[0136] Furthermore, in this scenario, when the fourth message only includes the energy-saving configuration information of the third network device corresponding to the first signal, that is, when it does not include the state and function transition indication, the serving network 11 can also send the first message to the UE10 separately, wherein the first message is used to instruct the UE10 to perform a state or function transition (i.e., steps S7-7 to S7-8).

[0137] c) When the terminal device is in a connected state, and the first network device sends at least one fourth message to the terminal device based on the first signal and the second signal, wherein the fourth message includes power-saving configuration information and / or status or function transition indication of the third network device. That is, the serving cell 11 sends a fourth message to UE10 based on high-power signals and low-power information. Similar to step S7-1, the fourth message may also include conditions for measuring the corresponding signals, such as enabling the measurement of low-power signals only when the high-power signals RSRP and / or RSRQ meet a certain threshold value.

[0138] It should be noted that (1) is more applicable to scenarios within the same control unit / base station (intra-CU / gNB), where the UE does not need to perform security key updating and may not need to change the Layer 2 protocol stack. Therefore, it can be configured through low-power signal indication without connection state. (2) can be applied to scenarios between different control units / base stations (intra-CU / gNB) and / or inter-CU / gNB, providing more complete configuration.

[0139] S7-6. The terminal device sends a configuration confirmation message to the first network device.

[0140] S7-7. When the terminal device is in a connected state and the fourth message only includes the energy-saving configuration information of the third network device corresponding to the first signal, the first network device sends a first message to the terminal device, wherein the first message is used to instruct the terminal device to perform a state or function transition.

[0141] It should be noted that this step is optional.

[0142] S7-8. The terminal device sends a state transition confirmation message to the first network device.

[0143] The aforementioned energy-saving configuration information may include at least one or more of the following: configuration information of the second network device; conditional handover configuration information in energy-saving mode; mobility handover configuration information triggered by Layer 1 / Layer 2 in energy-saving mode; and network-triggered mobility handover configuration information. These will be described in detail below:

[0144] Scenario 1: When the energy-saving configuration information is the configuration information of the second network device:

[0145] S7-9. The terminal device performs mobility handover. As described above (1), the fourth message can be a cell change instruction. In this step, UE10 performs mobility handover directly based on this cell change instruction and accesses candidate cell 13.

[0146] Scenario 2: When the energy-saving configuration information is the conditional switching configuration information for energy-saving mode:

[0147] S7-10. The terminal device performs mobility handover based on the third measurement result of the first signal and preset conditions. That is, when the configuration information is in energy-saving CHO mode, UE10 will perform measurements based on low-power signals, generate a third measurement result, and when it meets the preset conditions in CHO, perform mobility handover and access candidate cell 13.

[0148] Scenario 3: When the energy-saving configuration information is energy-saving Layer 1 / Layer 2 triggered mobility handover configuration information and / or network triggered mobility handover configuration information:

[0149] S7-11. The terminal device sends a fourth measurement result based on the first signal to the first network device. That is, if the network configures UE10 with energy-saving LTM or network-triggered mobility (cell change), UE10 will perform measurements based on the low-power signal and report them to the network (i.e., the fourth measurement result). The fourth measurement result may be a cell index or configuration index that meets the mobility conditions, and / or the corresponding measurement report.

[0150] S7-12~S7-13, the first network device sends a mobility handover indication and / or a state or function transition indication to the terminal device based on the first signal. That is, the network will issue a cell change command (i.e., mobility handover indication) to UE10 based on a low-power signal. This command can be implemented through a low-power sequence, which at least contains the configuration index corresponding to the target cell 12. UE10 will synchronize based on the low-power signal synchronization sequence of the corresponding cell, perform mobility handover, and access the target cell 12.

[0151] It should be noted that the state of UE10 in target cell 12 is related to the configuration provided by target cell 12. If target cell 12 provides an energy-saving state configuration, then terminal 10 will remain in the energy-saving state after performing mobility and will not need to enter the connected state. Otherwise, UE10 needs to enter the connected state.

[0152] This concludes the description of the entire process of providing pre-configuration for the UE, enabling the UE to remain in and / or switch to an energy-saving state, and achieving mobility handover through low-power signal interaction. This approach avoids increased power consumption, ensures the UE has the most suitable serving cell, and simultaneously guarantees UE performance, enabling mobility handover for the UE and / or the network under deep energy-saving conditions.

[0153] Figure 8 is a schematic diagram illustrating a mobility handover device according to an embodiment of the present disclosure. As shown in Figure 8, the mobility handover device 800 may include at least the following modules.

[0154] The first sending module 801 is used to send a first message to the terminal device, wherein the first message is used to instruct the terminal device to perform a state or function switch, and the terminal device is in a power-saving state or has the power-saving function enabled.

[0155] Specifically, based on the first measurement result and / or state or function transition request sent by the received terminal device and / or the state of the second network device and / or the state of the first network device, a first message is sent to the terminal device, wherein the first measurement result is generated based on the first signal measurement.

[0156] Additionally, the mobility switching device 800 may also include:

[0157] The receiving module 802 is configured to receive a second message sent by the terminal device, wherein the second message is used to confirm a state or function transition. The second message includes at least one of the following: a Radio Resource Control (RRC) message; a Media Access Control (MAC) CE message; a signal and / or sequence for energy-saving purposes; or information indicating feedback from the first network device.

[0158] The second sending module 803 is used to send a third message to the second network device after the terminal device switches to the connected state, wherein the third message is used to request mobility handover.

[0159] Specifically, after the terminal device switches to the connected state, it sends a third message to the second network device based on the first measurement result and / or the second measurement result received from the terminal device, wherein the second measurement result is generated based on the second signal measurement.

[0160] Figure 9 is a schematic diagram of a mobility handover device according to an embodiment of the present disclosure. As shown in Figure 9, the mobility handover device 900 may include at least the following modules.

[0161] The receiving module 901 is used to receive a first message sent by the first network device, wherein the first message is used to instruct the terminal device to perform a state or function switch, and the terminal device is in a power-saving state or has the power-saving function enabled.

[0162] Additionally, the mobility switching device 900 may also include:

[0163] The first transmitting module 902 is used to transmit a first measurement result generated based on the first signal measurement to the first network device.

[0164] The second sending module 903 is used to send a status or function transition request to the first network device based on the first measurement result and / or a preset threshold.

[0165] The third transmitting module 904 is used to send a second message to the first network device, wherein the second message is used to confirm a state or function transition. The second message includes at least one of the following: a Radio Resource Control (RRC) message; a Media Access Control (MAC) CE message; a signal and / or sequence for energy saving purposes; and information indicating feedback from the first network device.

[0166] The fourth sending module 905 is used to send a second measurement result generated based on the second signal measurement to the first network device after the terminal device switches to the connected state.

[0167] Figure 10 is a schematic diagram of a mobility handover device according to an embodiment of the present disclosure. As shown in Figure 10, the mobility handover device 1000 may include at least the following modules.

[0168] The first sending module 1001 is used to send a fourth message to the terminal device, wherein the fourth message includes energy-saving configuration information of at least one third network device.

[0169] Specifically, the sending module 1001 may further include:

[0170] The first sending unit 10011 is used to send at least one fourth message to the terminal device based on a first signal when the terminal device is in an energy-saving state or when the energy-saving function is enabled. The fourth message includes energy-saving configuration information of a third network device or a second network device.

[0171] The second sending unit 10012 is used to send at least one fourth message to the terminal device based on the first signal and / or the second signal when the terminal device is in a connected state, wherein the fourth message includes energy-saving configuration information and / or status or function switching indication of the third network device.

[0172] Additionally, the mobility switching device 1000 may also include:

[0173] The second sending module 1002 is used to send a first message to the terminal device when the terminal device is in a connected state and the fourth message only includes the energy-saving configuration information of the third network device corresponding to the first signal. The first message is used to instruct the terminal device to perform a state or function transition.

[0174] The third sending module 1003 is used to send a third message to at least one third network device, wherein the third message is used to request mobility handover and includes power saving capability information of the terminal device.

[0175] The fourth sending module 1004 is used to receive a fifth message sent by at least one third network device, wherein the fifth message includes energy-saving capability information and / or energy-saving configuration information of the third network device.

[0176] The fifth sending module 1005 is used to send a mobility handover indication and / or a status or function transition indication to the terminal device based on the first signal when the energy-saving configuration information is a mobility handover configuration information triggered by layer 1 / layer 2 in an energy-saving state and / or a network-triggered mobility handover configuration information.

[0177] The fourth message transmitted based on the first signal includes: a low-power sequence.

[0178] The energy-saving configuration information includes at least one of the following: configuration information of the second network device; conditional handover configuration information for energy-saving mode; mobility handover configuration information triggered by Layer 1 / Layer 2 in energy-saving mode; and network-triggered mobility handover configuration information.

[0179] Figure 11 is a schematic diagram of a mobility handover device according to an embodiment of the present disclosure. As shown in Figure 11, the mobility handover device 1100 may include at least the following modules.

[0180] The first receiving module 1101 is used to receive a fourth message sent by the first network device, wherein the fourth message includes energy-saving configuration information of at least one third network device.

[0181] Specifically, the receiving module 1101 may further include:

[0182] The first receiving unit 10011 is configured to receive at least one fourth message sent by the first network device based on the first signal when the terminal device is in an energy-saving state or the energy-saving function is enabled, wherein the fourth message includes energy-saving configuration information of a third network device or a second network device.

[0183] The second receiving unit 10012 is used to receive a fourth message sent by the first network device based on a first signal and / or a second signal when the terminal device is in a connected state, wherein the fourth message includes energy-saving configuration information and / or status or function switching indication of the third network device.

[0184] Additionally, the mobility switching device 1100 may also include:

[0185] The second receiving module 1102 is used to receive a first message sent by the first network device when the terminal device is in a connected state, wherein the first message is used to instruct the terminal device to perform a state or function transition.

[0186] The first execution module 1103 is used to measure and / or perform mobility switching based on the energy-saving configuration information corresponding to the first signal when the terminal device is in energy-saving mode or the energy-saving function is enabled.

[0187] The second execution module 1104 is used to perform measurements and / or perform mobility switching and / or state or function conversion based on the energy-saving configuration information corresponding to the second signal and / or the first signal when the terminal device is in a connected state.

[0188] The third execution module 1105 is used to perform a state or function transition when the terminal device is in a connected state and receives the first message.

[0189] Specifically, performing mobility handover includes at least one of the following: when the energy-saving configuration information is the configuration information of the second network device, performing mobility handover; when the energy-saving configuration information is the conditional handover configuration information of the energy-saving state, performing mobility handover based on the third measurement result of the first signal and preset conditions; when the energy-saving configuration information is the layer 1 / layer 2 triggered mobility handover configuration information and / or network triggered mobility handover configuration information of the energy-saving state, sending the fourth measurement result based on the first signal to the first network device.

[0190] The third receiving module 1106 is used to receive a mobility handover indication and / or a status or function transition indication sent by the first network device based on a first signal when the energy-saving configuration information is a mobility handover configuration information triggered by layer 1 / layer 2 in an energy-saving state and / or a network-triggered mobility handover configuration information.

[0191] The fourth message transmitted based on the first signal includes: a low-power sequence.

[0192] The energy-saving configuration information includes at least one of the following: configuration information of the second network device; conditional handover configuration information for energy-saving mode; mobility handover configuration information triggered by Layer 1 / Layer 2 in energy-saving mode; and network-triggered mobility handover configuration information.

[0193] Figure 12 is a hardware block diagram illustrating an electronic device according to an embodiment of the present disclosure. The electronic device according to an embodiment of the present disclosure includes at least a processor and a memory for storing computer-readable instructions. When the computer-readable instructions are loaded and executed by the processor, the processor performs the mobility switching method as described above.

[0194] The electronic device 1200 shown in Figure 12 specifically includes a Central Processing Unit (CPU) 1201, a Graphics Processing Unit (GPU) 1202, and a memory 1203. These units are interconnected via a bus 1204. The CPU 1201 and / or GPU 1202 can function as the aforementioned processors, and the memory 1203 can function as the aforementioned memory storing computer-readable instructions. Furthermore, the electronic device 1200 may also include a communication unit 1205, a storage unit 1206, an output unit 1207, an input unit 1208, and an external device 1209, all of which are also connected to the bus 1204.

[0195] Figure 13 is a schematic diagram illustrating a computer program product according to an embodiment of the present disclosure. As shown in Figure 13, a computer program product 1300 according to an embodiment of the present disclosure stores a computer program 1301 thereon. When the computer program 1301 is executed by a processor, the mobility handover method described with reference to the above figures is performed. The computer program product includes, but is not limited to, volatile memory and / or non-volatile memory. The volatile memory may include, for example, random access memory (RAM) and / or cache memory. The non-volatile memory may include, for example, read-only memory (ROM), hard disk, flash memory, optical disk, magnetic disk, etc.

[0196] The above description, with reference to the accompanying drawings, outlines a mobility handover method, apparatus, electronic device, and computer program product according to embodiments of the present disclosure. The mobility handover method according to embodiments of the present disclosure proposes to perform a state transition in advance for terminal devices in an energy-saving state or with energy-saving functions enabled, thereby reducing transmission performance loss due to mobility; and to provide advance configuration for terminal devices, enabling them to remain in and / or switch to an energy-saving state, achieving mobility handover between the terminal device and / or the network under deep energy-saving conditions through low-power signal interaction.

[0197] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this disclosure.

[0198] The basic principles of this disclosure have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this disclosure are merely examples and not limitations, and should not be considered as essential features of each embodiment of this disclosure. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the scope of this disclosure to the necessity of employing the aforementioned specific details for implementation.

[0199] The block diagrams of devices, apparatuses, devices, and systems disclosed herein are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, devices, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

[0200] Additionally, as used herein, the “or” used in a list of items beginning with “at least one” indicates a separate list, such that a list of, for example, “at least one of A, B, or C” means A or B or C, or AB or AC or BC, or ABC (i.e., A and B and C). Furthermore, the word “exemplary” does not imply that the described example is preferred or better than other examples.

[0201] It should also be noted that in the systems and methods of this disclosure, the components or steps can be decomposed and / or recombined. These decompositions and / or recombinations should be considered as equivalent solutions to this disclosure.

[0202] Various changes, substitutions, and modifications can be made to the technology described herein without departing from the teachings defined by the appended claims. Furthermore, the scope of the claims of this disclosure is not limited to the specific aspects of the processes, machines, manufactures, events, means, methods, and actions described above. Currently existing or later-developed processes, machines, manufactures, events, means, methods, or actions that perform substantially the same function or achieve substantially the same result as the corresponding aspects described herein can be utilized. Therefore, the appended claims include such processes, machines, manufactures, events, means, methods, or actions within their scope.

[0203] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use this disclosure. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of this disclosure. Therefore, this disclosure is not intended to be limited to the aspects shown herein, but rather to be carried out within the widest scope consistent with the principles and novel features disclosed herein.

[0204] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this disclosure to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations therein.

Claims

1. A mobility handover method applied to a first network device, the method comprising: sending a first message to a terminal device, wherein the first message is used to instruct the terminal device to perform a state or function transition, and the terminal device is in an energy saving state or has an energy saving function enabled. The sending of the first message to the terminal device comprises: sending the first message to the terminal device based on a first measurement result received from the terminal device, and / or a state or function transition request, and / or a state of a second network device obtained, and / or a state of the first network device.

2. The mobility handover method of claim 1, wherein, 3.The mobility handover method of claim 1, further comprising: receiving a second message sent by the terminal device, wherein the second message is used to confirm the state or function transition. The second message comprises at least one of: a radio resource control (RRC) message; a medium access control (MAC) CE message; a signal and / or sequence used to achieve an energy saving purpose; and information indicated by the first network device for feedback. 5.The mobility handover method of claim 2, further comprising: sending a third message to a second network device after the terminal device transitions to a connected state, wherein the third message is used to request the mobility handover. The sending of the third message to the second network device after the terminal device transitions to the connected state comprises: sending the third message to the second network device based on the first measurement result received from the terminal device and / or a second measurement result.

4. The mobility handover method of claim 3, wherein, The second measurement result is generated based on a second signal measurement. 7.A mobility handover method applied to a terminal device, the method comprising: receiving a first message sent by a first network device, wherein the first message is used to instruct the terminal device to perform a state or function transaction, and the terminal device is in an energy saving state or has an energy saving function enabled. 8.The mobility handover method of claim 7, further comprising: sending a first measurement result generated based on a first signal measurement to the first network device. 9.The mobility handover method of claim 8, further comprising: sending a state or function transition request to the first network device based on the first measurement result and / or a preset threshold. 10.The mobility handover method of claim 7, further comprising: sending a second message to the first network device, wherein the second message is used to confirm the state or function transition. The second message includes at least one of: a radio resource control (RRC) message; a medium access control(MAC) CE message; a signal and / or sequence used to achieve an energy saving purpose; and information of the first network device indicated for feedback. 12.The mobility handover method of claim 7, further comprising: sending a second measurement result generated based on a second signal measurement to the first network device after the terminal device transitions to a connected state.

6. The mobility handover method of claim 5, wherein, ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 11. The mobility handover method of claim 10, wherein, ​ ​ ​ ​ ​ ​ ​ 13. A mobility switching method applied to a first network device, the method comprising: sending, to a terminal device, a fourth message, wherein the fourth message comprises energy saving configuration information of at least one third network device.

14. The mobility handover method of claim 13, wherein, The sending, to the terminal device, of the fourth message comprises: when the terminal device is in an energy saving state or an energy saving function is enabled, sending, to the terminal device, at least one fourth message based on a first signal, wherein the energy saving configuration information of one third network device or a second network device is included in one fourth message.

15. The mobility handover method of claim 13, wherein, The sending, to the terminal device, of the fourth message further comprises: when the terminal device is in a connected state, sending, to the terminal device, at least one fourth message based on a first signal and / or a second signal, wherein the fourth message comprises the energy saving configuration information of the third network device and / or a state or function transition indication.

16. The mobility switching method of claim 15, the method further comprising: when the terminal device is in a connected state and the fourth message only comprises the energy saving configuration information of the third network device corresponding to the first signal, sending, to the terminal device, a first message, wherein the first message is used to instruct the terminal device to perform a state or function transition.

17. The mobility handover method of any of claims 14 to 16, wherein, The fourth message sent based on the first signal comprises a low power consumption sequence.

18. The mobility switching method of claim 13, the method further comprising: sending, to at least one third network device, a third message, wherein the third message is used to request the mobility switching, and the third message comprises energy saving capability information of the terminal device.

19. The mobility switching method of claim 13, the method further comprising: receiving a fifth message sent by at least one third network device, wherein the fifth message comprises energy saving capability information and / or the energy saving configuration information of the third network device.

20. The mobility handover method of any of claims 13 to 19, wherein, The energy saving configuration information comprises at least one of: configuration information of a second network device; condition switching configuration information of an energy saving state; layer 1 / layer 2 triggered mobility switching configuration information of an energy saving state; network triggered mobility switching configuration information.

21. The mobility switching method of claim 20, the method further comprising: when the energy saving configuration information is the layer 1 / layer 2 triggered mobility switching configuration information of the energy saving state and / or the network triggered mobility switching configuration information, sending, to the terminal device, a mobility switching indication and / or a state or function transition indication based on the first signal.

22. A mobility switching method applied to a terminal device, the method comprising: receiving a fourth message sent by a first network device, wherein the fourth message comprises energy saving configuration information of at least one third network device.

23. The mobility handover method of claim 22, wherein, The receiving, by the terminal device, of the fourth message sent by the first network device comprises: when the terminal device is in an energy saving state or an energy saving function is enabled receiving, by the terminal device, at least one fourth message sent by the first network device based on a first signal, wherein the energy saving configuration information of one third network device or a network device is included in one fourth message.

24. The mobility handover method of claim 22, wherein, The receiving the fourth message sent by the first network device further includes: The receiving the fourth message sent by the first network device further includes: 25.The mobility switching method of claim 24, further comprising: The receiving the first message sent by the first network device when the terminal device is in the connected state, wherein the first message is used to instruct the terminal device to perform the state or function conversion.

26. The mobility handover method of any of claims 23 to 25, wherein, The fourth message sent based on the first signal includes a low-power consumption sequence. 27.The mobility switching method of claim 23, further comprising: The measuring and / or performing the mobility switching based on the energy saving configuration information corresponding to the first signal when the terminal device is in the energy saving state or the energy saving function is turned on. 28.The mobility switching method of claim 24, further comprising: The measuring and / or performing the mobility switching and / or performing the state or function conversion based on the energy saving configuration information corresponding to the second signal and / or the first signal when the terminal device is in the connected state. 29.The mobility switching method of claim 25, further comprising: The performing the state or function conversion when the terminal device is in the connected state and the first message is received.

30. The mobility handover method of any of claims 22 to 29, wherein, The energy saving configuration information includes at least one of: Configuration information of a second network device; Conditional switching configuration information of an energy saving state; Layer 1 / layer 2 triggered mobility switching configuration information of the energy saving state; Network triggered mobility switching configuration information.

31. The mobility handover method of claim 30, wherein, The performing the mobility switching includes at least one of: When the energy saving configuration information is the configuration information of the second network device, performing the mobility switching; When the energy saving configuration information is the conditional switching configuration information of the energy saving state, performing the mobility switching based on a third measurement result of a first signal and a preset condition; When the energy saving configuration information is the layer 1 / layer 2 triggered mobility switching configuration information of the energy saving state and / or the network triggered mobility switching configuration information, sending a fourth measurement result of a first signal to the first network device. 32.The mobility switching method of claim 31, further comprising: When the energy saving configuration information is the layer 1 / layer 2 triggered mobility switching configuration of the energy saving state and / or the network triggered mobility switching configuration information, receiving a mobility switching instruction and / or a state or function conversion instruction sent by the first network device based on the first signal. 33.A mobility switching apparatus, comprising: A sending module, configured to send a first message to a terminal device, wherein the first message is used to instruct the terminal device to perform a state or function conversion, and the terminal device is in an energy saving state or an energy saving function is turned on. 34.A mobility switching apparatus, comprising: The receiving module is configured to receive a first message sent by the first network device, wherein the first message is used to instruct the terminal device to perform state or function conversion, and the terminal device is in an energy saving state or has an energy saving function enabled.

35. A mobility switching apparatus, comprising: The sending module is configured to send a fourth message to the terminal device, wherein the fourth message comprises energy saving configuration information of at least one third network device.

36. A mobility switching apparatus, comprising: The receiving module is configured to receive a fourth message sent by the first network device, wherein the fourth message comprises energy saving configuration information of at least one third network device.

37. An electronic device, comprising: a memory configured to store computer readable instructions; and a processor configured to execute the computer readable instructions to cause the electronic device to perform the mobility switching method according to any one of claims 1 to 32.

38. A computer program product comprising a computer program which, when executed by a processor, performs the mobility switching method according to any one of claims 1 to 32. ​

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