WO2022083260A1 - 小区切换方法、通信装置及存储介质 - Google Patents

小区切换方法、通信装置及存储介质 Download PDF

Info

Publication number
WO2022083260A1
WO2022083260A1 PCT/CN2021/113609 CN2021113609W WO2022083260A1 WO 2022083260 A1 WO2022083260 A1 WO 2022083260A1 CN 2021113609 W CN2021113609 W CN 2021113609W WO 2022083260 A1 WO2022083260 A1 WO 2022083260A1
Authority
WO
WIPO (PCT)
Prior art keywords
cell
threshold
lte
private
event
Prior art date
Application number
PCT/CN2021/113609
Other languages
English (en)
French (fr)
Inventor
智钢
袁锴
Original Assignee
荣耀终端有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 荣耀终端有限公司 filed Critical 荣耀终端有限公司
Publication of WO2022083260A1 publication Critical patent/WO2022083260A1/zh

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0058—Transmission of hand-off measurement information, e.g. measurement reports
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present application relates to the field of communication technologies, and in particular, to a cell handover method, a communication device, and a storage medium.
  • the 5th generation mobile network is the latest generation of mobile communication technology. Compared with the early mobile communication technologies such as 4G, 3G and 2G, 5G can provide higher data rates and lower latency. , the full connection of the Internet of Everything, more energy saving, lower cost, higher system capacity and large-scale equipment access.
  • the present application provides a cell handover method, a communication device and a storage medium.
  • a terminal device can reside in an LTE cell, saving power consumption.
  • a first aspect provides a cell handover method, applied to a communication device, where the communication device resides in an SA cell and is in a connected state, the method includes: receiving measurement configuration information of an A2 event, where the measurement configuration information of the A2 event includes an A2 event threshold Carry out signal measurement to SA cell, if the signal quality of SA cell is lower than the first private threshold (private threshold 1 in the embodiment of the present application), then send the first measurement report of the A2 event; the first private threshold is that the communication device sets and higher than the A2 event threshold; receive the measurement configuration information of the inter-system measurement event, and the measurement configuration information of the inter-system measurement event includes the information of the LTE adjacent cell of the SA cell; perform signal measurement on the LTE adjacent cell, and send a second measurement report; Wherein, the signal quality of the LTE cell in the second measurement report is higher than the first threshold; the SA cell is switched to the target cell through the cell handover procedure, and the target cell is one of the LTE cells.
  • the first private threshold private threshold 1 in the embodiment of
  • the communication method provided by the first aspect can be applied to a scenario where a connected terminal device switches from an SA cell to an anchor LTE cell/normal LTE cell.
  • the terminal device can set the private threshold 1, and the private threshold 1 is greater than the A2 event threshold configured on the network side.
  • the terminal device can compare the signal quality of the SA cell with the private threshold 1, and when the signal quality of the SA cell is lower than the private threshold 1, the terminal device can switch from the SA cell to the anchor LTE cell/normal LTE cell.
  • the private threshold 1 By setting the private threshold 1, the handover judgment condition of the system when the terminal equipment is switched from the SA cell to the LTE cell is relaxed.
  • the signal quality of the SA cell is normal or poor, the handover to the LTE cell can be performed, which saves the power consumption of the terminal equipment. It reduces the heat generation of the terminal equipment and prolongs the battery life.
  • performing signal measurement on an LTE neighboring cell and sending a second measurement report includes: acquiring information about the anchor LTE cell; and performing signal measurement on the anchor LTE cell in the LTE neighboring cell according to the anchor LTE cell information. ; if the signal quality of the anchor LTE cell in the LTE neighboring cell is higher than the first threshold, a second measurement report is sent; the LTE cell and the target cell are both anchor LTE cells.
  • the anchor LTE cell is higher than the first threshold. If there is an anchor LTE cell that is higher than the first threshold, switch from the SA cell to the anchor LTE cell, realizing the autonomous selection of the terminal equipment to preferentially switch from the SA cell to the anchor point LTE cell, and the terminal equipment adopts the CONFIG D scheme to display the signal icon , the signal icon is always 5G, which improves the user experience.
  • it also includes: if the signal quality of no anchor LTE cell in the LTE adjacent cell is higher than the first threshold, performing signal measurement on the common LTE cell in the LTE adjacent cell; If the signal quality of the common LTE cell is higher than the first threshold, a second measurement report is sent; both the LTE cell and the target cell are common LTE cells.
  • the anchor LTE cell is higher than the first threshold, and if no anchor LTE cell is higher than the first threshold, then it is determined whether the common LTE cell is higher than the first threshold. If there is an ordinary LTE cell that is higher than the first threshold, the SA cell is switched to the ordinary LTE cell to reduce the power consumption of the terminal device.
  • the first private threshold includes a private threshold 1a and a private threshold 1b, and the private threshold 1a>private threshold 1b; before sending the second measurement report, the method further includes: determining that the signal quality of the SA cell is lower than the private threshold 1a and higher than the private threshold 1b.
  • two first private thresholds are set.
  • the terminal device can switch from the SA cell to the anchor LTE cell. If there is no anchor LTE cell Above the first threshold, the terminal device continues to camp in the SA cell, ensuring that the service rate and signal icons are always displayed as 5G, which improves the user experience.
  • the first private threshold includes a private threshold 1a and a private threshold 1b, and the private threshold 1a>private threshold 1b; before sending the second measurement report, the method further includes: determining that the signal quality of the SA cell is lower than the private threshold 1b. .
  • two first private thresholds are set.
  • the terminal device can switch from the SA cell to the anchor LTE cell, ensuring that the service rate and signal icons are always displayed as 5G. user experience. If there is no anchor LTE cell higher than the first threshold, but there is a normal LTE cell higher than the first threshold, the terminal device can switch from the SA cell to the normal LTE cell to ensure that the power consumption of the terminal device is reduced.
  • acquiring the anchor point LTE cell information includes: sending the location information of the communication device to the cloud server, and receiving the anchor point LTE cell information sent by the cloud server; and/or acquiring the anchor point LTE cell information,
  • the anchor LTE cell information includes information of the anchor LTE cell where the communication device once camped.
  • the measurement configuration information of the inter-system measurement event includes the measurement configuration information of the B1 event or the measurement configuration information of the B2 event.
  • the first threshold includes any one of the following: a B1 event different system neighbor threshold, a B2 event different system neighbor threshold, or a second private threshold (private threshold 2 in the embodiment of the present application) , and the second private threshold is set by the communication device.
  • the second private threshold may include private threshold 2a and private threshold 2b, where private threshold 2a ⁇ private threshold 2b.
  • the private threshold 2a is for the anchor LTE cell
  • the private threshold 2b is for the common LTE cell. If the terminal device determines that the signal quality of the anchor LTE cell is greater than the private threshold 2a, it switches from the SA cell to the anchor LTE cell. If the terminal device determines that the signal quality of no anchor LTE cell is greater than the private threshold 2a, but the signal quality of a common LTE cell is greater than the private threshold 2b, it switches from the SA cell to the common LTE cell.
  • the threshold value for the terminal equipment to switch to the anchor LTE cell is reduced, making it easier for the terminal equipment to switch to the anchor LTE cell, giving priority to guaranteeing the service rate, and reducing the power consumption of the terminal equipment.
  • the terminal device displays the 5G signal icon.
  • a cell handover method is provided, which is applied to a communication device.
  • the communication device resides in an SA cell and is in an idle state.
  • the method includes: when it is detected that the signal quality of the SA cell is lower than a first private threshold, triggering a search LTE cell; the first private threshold is higher than the serving cell threshold configured on the network side for reselection to a low-priority cell, and the LTE cell includes an anchor LTE cell and/or a common LTE cell; if a target cell is found, the cell is reselected The process is reselected from the SA cell to the target cell; the target cell is one of the LTE cells, and the signal quality of the target cell is higher than the first threshold.
  • the communication method provided in the second aspect can be applied to a scenario in which a terminal device in an idle state is reselected from an SA cell to an anchor LTE cell/common LTE cell.
  • the terminal device may set a private threshold 1, and the private threshold 1 is greater than the serving cell threshold configured on the network side for reselection to a low-priority cell.
  • the terminal device can compare the signal quality of the SA cell with the private threshold 1. When the signal quality of the SA cell is normal or poor, it can reselect to the LTE cell, which saves the power consumption of the terminal equipment, reduces the heat generation of the terminal equipment, and prolongs the battery life.
  • searching for a target cell includes: acquiring anchor LTE cell information; searching for an anchor LTE cell according to the anchor LTE cell information; if the signal quality of the anchor LTE cell is higher than a first threshold , the target cell is determined to be searched; the target cell is the anchor LTE cell.
  • the anchor LTE cell is higher than the first threshold. If there is an anchor LTE cell that is higher than the first threshold, the SA cell will be reselected to the anchor LTE cell, which realizes the terminal equipment's independent selection from the SA cell to the anchor point LTE cell, and the terminal equipment adopts the CONFIG D scheme to display When the signal icon is on, the signal icon is always 5G, which improves the user experience.
  • it also includes: if the signal quality of no anchor LTE cell is higher than the first threshold, searching for a common LTE cell; if there is a common LTE cell whose signal quality is higher than the first threshold, determining The target cell is found; the target cell is an ordinary LTE cell.
  • the anchor LTE cell is higher than the first threshold, and if no anchor LTE cell is higher than the first threshold, then it is determined whether the common LTE cell is higher than the first threshold. If there is a common LTE cell that is higher than the first threshold, the SA cell is reselected to a common LTE cell to reduce the power consumption of the terminal device.
  • the first private threshold includes a private threshold 1a and a private threshold 1b, and the private threshold 1a>private threshold 1b; before determining that the target cell is searched, it also includes: determining that the signal quality of the SA cell is lower than the private threshold 1a and higher than the private threshold 1b.
  • two first private thresholds are set.
  • the terminal device can reselect from the SA cell to the anchor LTE cell. If there is no anchor LTE cell
  • the terminal device continues to camp in the SA cell, which ensures that the signal icon is always displayed as 5G, and improves the user experience.
  • the terminal equipment resides in the SA cell, and can access the SA cell as soon as possible when there is a service requirement.
  • the first private threshold includes a private threshold 1a and a private threshold 1b, and the private threshold 1a>private threshold 1b; before determining that the target cell is searched, the method further includes: determining that the signal quality of the SA cell is lower than the private threshold 1b. .
  • two first private thresholds are set.
  • the terminal device can reselect from the SA cell to the anchor LTE cell, ensuring that the service rate and signal icon are always displayed as 5G, Improved user experience. If there is no anchor LTE cell higher than the first threshold, but there is a normal LTE cell higher than the first threshold, the terminal device can reselect from the SA cell to the normal LTE cell to ensure that the power consumption of the terminal device is reduced.
  • acquiring the anchor point LTE cell information includes: sending the location information of the communication device to the cloud server, and receiving the anchor point LTE cell information sent by the cloud server; and/or acquiring the anchor point LTE cell information,
  • the anchor LTE cell information includes information about the anchor LTE cell where the communication device once resided; and/or, receiving a system message of the LTE cell, where the system message includes an information element indicating whether the LTE cell is an anchor LTE cell, according to the information element Obtain anchor LTE cell information.
  • the first threshold includes any one of the following: a neighbor threshold for low-priority reselection or a second private threshold, the neighbor threshold for low-priority reselection is configured on the network side, and the first threshold is configured on the network side.
  • Two private thresholds are set for the communication device.
  • the second private threshold may include private threshold 2a and private threshold 2b, where private threshold 2a ⁇ private threshold 2b.
  • the private threshold 2a is for the anchor LTE cell
  • the private threshold 2b is for the common LTE cell. If the terminal device determines that the signal quality of the anchor LTE cell is greater than the private threshold 2a, it will reselect from the SA cell to the anchor LTE cell. If the terminal device determines that the signal quality of no anchor LTE cell is greater than the private threshold 2a, but there is a common LTE cell whose signal quality is greater than the private threshold 2b, it will reselect from the SA cell to the common LTE cell.
  • the threshold for the terminal equipment to reselect to the anchor LTE cell is reduced, making it easier for the terminal equipment to reselect to the anchor LTE cell, while reducing the power consumption of the terminal equipment, ensuring that the terminal equipment The 5G signal icon is displayed.
  • a cell handover method is provided, which is applied to a communication device.
  • the communication device resides in an LTE cell and is in a connected state, and the LTE cell is an anchor LTE cell or a common LTE cell.
  • the method includes: receiving a B1 event or a B2 event
  • the measurement configuration information of the B1 event or the B2 event includes the information of the NR adjacent cell of the LTE cell; the signal measurement is performed on the NR adjacent cell, and a first measurement report is sent; wherein, the signal of the NR cell in the first measurement report
  • the quality is higher than a third private threshold (private threshold 3 in the embodiment of this application), the third private threshold is set by the communication device, and the third private threshold is higher than the B1 event different-system neighbor threshold or the B2 event different-system neighbor threshold ; establish a connection with the target NR cell, and the target NR cell is one of the NR cells.
  • a third private threshold private threshold 3 in the embodiment of this application
  • the communication method provided by the third aspect can be applied to a scenario where a connected terminal device switches from an anchor LTE cell/normal LTE cell to an SA cell or establishes an ENDC dual connection to connect to a 5G cell.
  • the terminal device can set the private threshold 3, and the private threshold 3 is greater than the B1 event inter-system neighbor threshold configured on the network side.
  • the terminal device can compare the signal quality of the NR cell with the private threshold 3.
  • the private threshold 3 By setting the private threshold 3, the conditions for the terminal equipment to switch from the anchor LTE cell/normal LTE cell to the SA cell or establish an ENDC dual connection to connect to the 5G cell are improved.
  • the signal quality of the NR cell is very good, it can be switched to the NR cell. , which saves the power consumption of the terminal device, reduces the heat generation of the terminal device, and prolongs the battery life. At the same time, the service rate is also improved.
  • the LTE cell is a common LTE cell
  • establishing a connection with a target NR cell includes: switching from a common LTE cell to a target NR cell through a cell handover process, and the target NR cell is an independent networking SA cell.
  • the LTE cell is the anchor LTE cell and establishes a connection with the target NR cell, including: switching from the anchor LTE cell to the target NR cell through the cell handover process, and the target NR cell is the SA cell; or, establishing Dual connectivity ENDC dual connectivity with 4G-5G wireless access to the target NR cell, the target NR cell is the NR cell connected to the anchor LTE cell.
  • a cell handover method is provided, which is applied to a communication device.
  • the communication device resides in an LTE cell and is in an idle state, and the LTE cell is an anchor LTE cell or a common LTE cell.
  • the method includes: searching for an SA cell; to the target SA cell, then reselect from the LTE cell to the target SA cell through the cell reselection process; wherein, the signal quality of the target SA cell is higher than the third private threshold, and the third private threshold is set by the communication device and is higher than the network Neighbor threshold for high-priority reselection configured on the side.
  • the communication method provided in the fourth aspect can be applied to a scenario in which an idle state terminal device reselects from an anchor LTE cell/normal LTE cell to an SA cell.
  • the terminal device can set private threshold 3, which is greater than the neighbor threshold for high-priority reselection configured on the network side.
  • the terminal device can compare the signal quality of the SA cell with the private threshold 3.
  • the private threshold 3 By setting the private threshold 3, the time-varying system conditions for the terminal equipment to reselect from the anchor LTE cell/normal LTE cell to the SA cell are improved.
  • the signal quality of the SA cell is very good, it can be reselected to the SA cell, saving terminal equipment. power consumption, reduce the heat generation of the terminal equipment, and prolong the battery life. At the same time, the service rate is also improved.
  • searching for an independent networking SA cell includes: acquiring an SA neighboring cell of an LTE cell; and searching for an SA cell according to the SA neighboring cell.
  • searching for an independent networking SA cell includes: acquiring the frequency point of the SA cell, where the frequency point of the SA cell includes the frequency point of the SA cell where the communication device once resided; performing SA according to the frequency point of the SA cell. search of the neighborhood.
  • a fifth aspect provides a cell handover method, applied to a communication device, where the communication device resides in a common LTE cell, the method comprising: when a preset condition for fast handover from an LTE cell to an NR cell is satisfied, if the communication device is connected If the communication device is in the idle state, it searches for the NR cell, and if the target NR cell is found, it is reselected to the target NR cell; wherein, the target NR cell
  • the signal quality is higher than a fourth private threshold (private threshold 4 in this embodiment of the present application), and the fourth private threshold is set by the communication device.
  • the communication method provided in the fifth aspect can be applied to a scenario in which a terminal device residing in a common LTE cell is quickly switched to an NR cell.
  • a terminal device residing in a common LTE cell is quickly switched to an NR cell.
  • the terminal device When the terminal device is in the connected state, through the L2NR re-establishment process, it actively and quickly initiates a handover from an ordinary LTE cell to an NR cell, which shortens the handover delay.
  • the terminal equipment When the terminal equipment is in the idle state, it can independently search for NR cells, quickly access the NR cells, and shorten the handover delay.
  • the terminal device can set the private threshold 4, and the private threshold 4 is smaller than the private threshold 3.
  • the terminal equipment When the terminal equipment determines the target NR cell, it can compare the signal quality of the NR cell with the private threshold 4, and when the signal quality of the NR cell is higher than the private threshold 4, the terminal equipment can switch. By setting the private threshold 4, the service rate requirement is met on the basis that the terminal equipment is rapidly switched from the common LTE cell to the NR cell.
  • the preset conditions include at least one of the following: running a whitelisted application program in the foreground; and the amount of data to be uploaded or data to be downloaded is greater than a preset value.
  • an apparatus comprising: means or means for performing the steps in any of the above aspects.
  • a communication device in a seventh aspect, includes a processor, the processor is coupled to a memory, and reads instructions in the memory and causes the communication device to perform the method provided in any of the above aspects according to the instructions.
  • the communication device is a terminal or a chip.
  • a program is provided, which, when executed by a processor, is used to perform the method provided in any of the above aspects.
  • a computer-readable storage medium is provided, and instructions are stored in the computer-readable storage medium, and when the instructions are executed on a computer or a processor, the method provided in any of the above aspects is implemented.
  • a program product in a tenth aspect, includes a computer program, the computer program is stored in a readable storage medium, and at least one processor of a device can read the computer program from the readable storage medium , the at least one processor executes the computer program to cause the device to implement the method provided in any of the above aspects.
  • an apparatus including a communication module and a processing module.
  • the communication module can receive data sent by or from other devices, for example, receiving system messages, receiving measurement configuration information of A2 events, measurement configuration information of B1 events, measurement configuration information of B2 events, sending measurement reports of A2 events , Send the measurement report of the B1 event or send the measurement report of the B2 event.
  • the processing module can be used to detect the signal quality of the current serving cell, detect the signal quality of cells in different systems, search for cells, determine the target cell for handover, determine the target cell for reselection, or perform cell reselection procedures, cell handover procedures, and establish ENDC Dual connections, etc., implement the method provided by any one of the above aspects.
  • FIG. 1 is a schematic diagram of a networking mode of a mobile communication system to which an embodiment of the application is applicable;
  • Figure 2 is a schematic diagram of 5G NSA networking
  • Figure 3 is a schematic diagram of data offloading in 5G NSA networking
  • Figure 4 is another schematic diagram of data offloading in 5G NSA networking
  • FIG. 5 is a schematic diagram of a scenario in which an existing terminal device is switched from an SA cell to an NSA cell/common LTE cell;
  • FIG. 6 is a schematic diagram of the handover result of switching from SA cell to NSA cell/normal LTE cell when the existing terminal equipment is in different states;
  • Fig. 8 is the message interaction diagram of switching from SA cell to NSA cell/normal LTE cell when the existing terminal equipment is in idle state;
  • FIG. 9 is a schematic diagram of a scenario in which a terminal device is handed over from an SA cell to an NSA cell/normal LTE cell according to an embodiment of the present application;
  • FIG. 10 is a schematic diagram of a handover result of switching from an SA cell to an NSA cell/normal LTE cell when the terminal device is in different states according to an embodiment of the present application;
  • FIG. 11 is a message interaction diagram of switching from an SA cell to an NSA cell/normal LTE cell when a terminal device is in a connected state according to an embodiment of the present application;
  • FIG. 12 is a message interaction diagram for switching from an SA cell to an NSA cell/normal LTE cell when a terminal device is in an idle state provided by an embodiment of the present application;
  • FIG. 13 is a flowchart of switching from an SA cell to an NSA cell/normal LTE cell when a terminal device is in a connected state according to an embodiment of the present application;
  • 15 is another flowchart of switching from an SA cell to an NSA cell/ordinary LTE cell when a terminal device is in a connected state according to an embodiment of the present application;
  • 16 is a flowchart of switching from an SA cell to an NSA cell/normal LTE cell when a terminal device is in an idle state provided by an embodiment of the present application;
  • 17 is another flowchart of switching from an SA cell to an NSA cell/ordinary LTE cell when a terminal device is in an idle state according to an embodiment of the present application;
  • 19 is a schematic diagram of a scenario in which an existing terminal device is switched from an NSA cell/normal LTE cell to an NR cell;
  • 20 is a schematic diagram of a handover result of switching from an NSA cell/normal LTE cell to an NR cell when the existing terminal equipment is in different states;
  • Figure 21 is a message interaction diagram of switching from an NSA cell/normal LTE cell to an NR cell when an existing terminal device is in a connected state;
  • Figure 22 is a message interaction diagram of switching from an NSA cell/normal LTE cell to an SA cell when the existing terminal equipment is in an idle state;
  • FIG. 23 is a schematic diagram of a scenario in which a terminal device switches from an NSA cell/normal LTE cell to an NR cell according to an embodiment of the present application;
  • 24 is a message interaction diagram of switching from an NSA cell/normal LTE cell to an NR cell when a terminal device is in a connected state provided by an embodiment of the present application;
  • 25 is a message interaction diagram of switching from an NSA cell/normal LTE cell to an SA cell when a terminal device is in an idle state according to an embodiment of the present application;
  • 26 is a flowchart of handover of a terminal device from a common LTE cell to an NR cell according to an embodiment of the present application
  • FIG. 27 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.
  • FIG. 28 is another schematic structural diagram of a terminal device provided by an embodiment of the present application.
  • 5G is the latest generation of mobile communication technology. Compared with the early mobile communication technologies such as 4G, 3G, and 2G, 5G can provide higher data rate, lower latency, full connection of the Internet of Everything, more energy saving, and lower power consumption. cost, higher system capacity, and large-scale device access.
  • 5G new radio (NR) is a new radio access technology (RAT) developed by the 3rd generation partnership project (3GPP) for 5G mobile communication networks. It is a global standard for the air interface of 5G networks.
  • 3GPP 3rd generation partnership project
  • the core networks of both the 5G NSA and the 5G SA may be a 4G core network (evolved packet core, EPC) or a 5G core network (5G core network, 5GC).
  • EPC evolved packet core
  • 5G core network 5G core network
  • 5G NSA networking can also be called 4G-5G wireless access dual connectivity (EUTRN-NR dual connectivity, EN-DC) networking.
  • EUTRN-NR dual connectivity, EN-DC 4G-5G wireless access dual connectivity
  • FIG. 1 is a schematic diagram of a networking manner of a mobile communication system to which this embodiment of the application is applied.
  • the networking methods may include: Long Term Evolution (LTE) networking (or called LTE standalone networking), 5G NSA networking and 5G networking SA networking.
  • LTE Long Term Evolution
  • the base station in the 4G mobile communication network can be called a 4G base station (evolved nodeB, eNB), and the base station in the 5G mobile communication network can be called a 5G base station (5G nodeB, gNB).
  • Cells can be configured on the eNB and gNB, and each cell has a certain signal coverage. As shown in (a) of FIG.
  • the LTE cell in the LTE networking mode, the LTE cell is provided by the eNB, and the eNB accesses the EPC.
  • the LTE cell in the 5G NSA networking mode, the LTE cell is provided by the eNB, and the NR cell is provided by the gNB.
  • the gNB can act as a slave station of the eNB. Both the eNB and the gNB access the EPC or 5GC.
  • it can be the target networking mode of 5G SA.
  • the NR cell is provided by the gNB, and the gNB directly accesses the 5GC.
  • FIG. 1 only shows part of the networking modes, and does not limit the 4G networking mode and the 5G networking mode.
  • 5G NSA networking methods can include Option 3/3a/3x, Option 4/4a, Option 7/7a/7x and other possible methods.
  • the UE can connect to the base station eNB of 4G LTE and the base station gNB of 5G NR at the same time.
  • the eNB is the master node, which is also called the master station, the master 4G base station (master eNB, MeNB) or the master node (master node, MN) in the EN-DC in the EN-DC.
  • the base station of 5G NR can be called En-gNB.
  • the En-gNB is a secondary node, and is also called a slave station, an auxiliary 5G base station (secondary gNB, SgNB) or a secondary node (secondary node, SN) in the EN-DC in the EN-DC.
  • the eNB and the En-gNB are connected through the X2 interface.
  • both the eNB and the En-gNB are connected to the 4G core network.
  • the 4G core network may include a mobility management entity (mobility management entity, MME) and a serving gateway (serving gateway, SGW).
  • MME mobility management entity
  • SGW serving gateway
  • the eNB is connected to the MME through the S1-C interface and to the SGW through the S1-U interface.
  • MME mobility management entity
  • SGW serving gateway
  • the UE In the EN-DC networking mode, the UE maintains dual connections with the eNB and the En-gNB at the same time, and uses the radio resources of the two base stations for data transmission at the same time.
  • the cells allocated to the UE and belonging to the eNB and the En-gNB are divided into two cell groups (cell groups), and the cells belonging to the eNB are called the cell group (master cell group, MCG) under the master node in the EN-DC.
  • the cell belonging to the En-gNB is called the cell group (secondary cell group, SCG) under the secondary node in the EN-DC.
  • the radio link control (RLC) configuration and logical channel configuration of a radio bearer are called RLC bearers. According to the distribution of data on the primary and secondary stations, it can be divided into the following 4 DC bearer types:
  • MCG bearer The data is only on the master station, and the RLC bearer is only configured on the MCG.
  • MCG Split bearer The data is split at the master station, and the RLC bearer is configured on the MCG and SCG at the same time.
  • FIG. 3 is a schematic diagram of data distribution in 5G NSA networking, showing MCG bearer, SCG bearer, and MCG Split bearer.
  • the protocol stack of the eNB may include a medium access control (MAC), an RLC layer and a packet data convergence protocol (PDCP) layer
  • the protocol stack of the gNB may include the NR MAC layer, NR RLC layer and NR PDCP layer.
  • the bearer type will be described.
  • the MCG Split bearer mode the data streams are aggregated on the PDCP layer, and then the data streams are simultaneously transmitted to the UE through multiple base stations. In this case, one PDCP entity can be associated with two RLC entities.
  • the PDCP layer transmits the data flow to the RLC layer through the RLC1 and RLC2 links.
  • the RLC1 link can be understood as the LTE link and the RLC2 link.
  • the path can be understood as an NR link, and each RLC entity corresponds to the LTE air interface and the NR air interface respectively.
  • the PDCP data flow will send PDCP packets over the air interfaces of LTE and NR respectively according to the obtained authorization.
  • the PDCP layer is associated with an RLC entity, and the data of the PDCP layer is directly transmitted to the RLC layer.
  • the data is transmitted at the NR PDCP layer, that is, the data is transmitted on the secondary station.
  • an NR RLC entity is associated, and the data of the NR PDCP layer is directly transmitted to the NR RLC layer.
  • each RLC entity may correspond to at least one bearer link, and in some embodiments, the RLC layer may also have multiple RLC entities.
  • FIG. 4 is another schematic diagram of data splitting in the 5G NSA networking, showing the MCG bearer, the SCG bearer, and the SCGSplit bearer.
  • MCG bearer and the SCG bearer reference may be made to the description in FIG. 3 , and details are not repeated here.
  • the SCGSplit bearer mode data is converged at the NR PDCP layer, and one NR PDCP entity can be associated with two RLC entities, corresponding to the NR RLC layer and the RLC layer. At this time, the data is distributed at the secondary station.
  • UE may also be referred to as a communication device, communication device, terminal device, mobile station (mobile station, MS), terminal or mobile terminal (mobile terminal, MT), etc., and may be a device that provides voice/data connectivity to users.
  • Devices such as handheld or in-vehicle devices with wireless connectivity.
  • terminal devices are: mobile phone (mobile phone), tablet computer, notebook computer, PDA, mobile internet device (MID), wearable device, virtual reality (VR) device, augmented Augmented reality (AR) equipment, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, smart grid ), wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, etc.
  • SA cell refers to the 5G cell during 5G SA networking.
  • a cell configured on a 5G base station may be called an SA cell.
  • NSA cell/anchor LTE cell refers to the LTE cell that can establish ENDC dual connection and 5G cell during 5G NSA networking.
  • the eNB is the master station, and the cell configured on the eNB may be called an NSA cell or an anchor LTE cell.
  • NSA cell a description manner of "NSA cell" is adopted in the embodiments of this application.
  • Common LTE cell refers to the LTE cell in the 4G independent networking.
  • a cell configured on a 4G base station may be called a normal LTE cell.
  • NR cell refers to all 5G cells, including SA cells and 5G cells connected to NSA cells after establishing ENDC dual connections during 5G NSA networking.
  • the cell configured on the En-gNB is an NR cell, but not an SA cell.
  • LTE cell refers to all 4G cells, including ordinary LTE cells and NSA cells/anchor LTE cells.
  • the A2 event is a measurement event for this system, which means that the signal quality of the current serving cell is lower than the A2 event threshold.
  • the A2 event threshold is configured by the base station side (or the network side).
  • the base station configures the A2 event measurement
  • the base station sends measurement configuration information to the UE, which carries the A2 event threshold.
  • the UE receives the measurement configuration information, and performs signal measurement on the current serving cell. If the UE detects that the signal quality of the current serving cell is lower than the A2 event threshold, it reports the A2 event.
  • the A2 event can be used to trigger cell handover.
  • the A2 event may be used to enable inter-cell measurement, for example, inter-system B1 event measurement.
  • the signal quality of the current serving cell is compared with the private threshold 1 set by the UE.
  • the B1 event is a measurement event for the different system, which means that the signal quality of the neighboring cell of the different system is higher than the threshold of the neighboring cell of the B1 event.
  • the B1 event and threshold are configured by the base station side (or the network side).
  • the base station configures B1 event measurement
  • the base station sends measurement configuration information to the UE, which carries the B1 event inter-system adjacent cell threshold and inter-system adjacent cell frequency points.
  • the UE receives the measurement configuration information, and performs signal measurement of neighboring cells of different systems according to the frequency points. If the UE detects that the signal quality of the neighboring cell of the different system is higher than the threshold of the neighboring cell of the B1 event, it reports the event B1.
  • the B1 event can be used to trigger an inter-system handover.
  • the signal quality of the neighboring cell of the different system is compared with the private threshold 2 or the private threshold 3 set by the UE.
  • the B2 event is also a measurement event for an inter-system, which means that the signal quality of the serving cell is lower than the B2 event serving cell threshold and at the same time the signal quality of the inter-system neighbor is higher than the B2 event inter-system neighbor threshold.
  • B2 events and thresholds are configured on the base station side (or network side).
  • the base station configures the B2 event measurement
  • the base station sends measurement configuration information to the UE, which carries the B2 event threshold and frequency.
  • the UE receives the measurement configuration information, and performs signal measurement of neighboring cells of different systems according to the frequency points.
  • the UE If the UE detects that the signal quality of the serving cell is lower than the B2 event serving cell threshold and the signal quality of the inter-system neighbor cell is higher than the B2 event inter-system neighbor cell threshold, the UE reports the B2 event.
  • a B2 event can be used to trigger an inter-system handover.
  • the signal quality of the current serving cell is compared with the signal quality set by the UE.
  • the private threshold 1 is compared, and the signal quality of the neighboring cell of the different system is compared with the private threshold 2 set by the UE.
  • the UE switches from an NSA cell/normal LTE cell to an SA cell or establishes an ENDC dual connection to connect to a 5G cell
  • the signal quality of the zone is compared with a private threshold 3 set by the UE.
  • both the B1 event and the B2 event are inter-system measurement events, and in the cell handover method provided in the embodiment of the present application, the B1 event is used as an example for description.
  • the B1 event in this embodiment of the present application may also be a B2 event.
  • the idle UE reselects from the SA cell to the NSA cell/normal LTE cell. It is configured by the base station side and can be carried in the system message. Generally, the UE reselection from the SA cell to the LTE cell network is configured as low priority reselection, and conversely, the UE reselection from the LTE cell to the SA cell network is configured as high priority reselection.
  • the idle UE reselects from the NSA cell/normal LTE cell to the SA cell. It is configured by the base station and can be carried in the system message.
  • Private Threshold 1 and Private Threshold 2 are set by the UE and are applicable to the scenario where the UE switches from the SA cell to the NSA cell/normal LTE cell.
  • the private threshold 1 is for the SA cell, and is used by the UE to judge whether the signal quality of the SA cell is lower than the private threshold 1.
  • the private threshold 2 is for the NSA cell/common LTE cell, and is used by the UE to determine whether the signal quality of the NSA cell/common LTE cell is higher than the private threshold 2.
  • Private Threshold 3 and Private Threshold 4 are set by the UE and are applicable to the scenario where the UE switches from an NSA cell/normal LTE cell to an NR cell. Both the private threshold 3 and the private threshold 4 are for the NR cell, and are used by the UE to judge whether the signal quality of the NR cell is higher than the private threshold 3 or the private threshold 4. The value of the private threshold 3 is higher than the private threshold 4. Private threshold 3 can be applied to scenarios where the UE switches from an NSA cell/normal LTE cell to an SA cell with very good signal quality or establishes an ENDC dual connection with a non-standalone 5G cell. The private threshold 4 can be applied to the scenario in which the UE quickly switches from the NSA cell/normal LTE cell to the SA cell or establishes the ENDC dual connection.
  • the cell handover method provided by the embodiment of the present application is used to realize the handover of the UE between the SA cell and the NSA cell/ordinary LTE cell.
  • Application scenarios may include: UE handover from SA cell to NSA cell/normal LTE cell, and UE handover from NSA cell/normal LTE cell to SA cell or establishing ENDC dual connectivity.
  • 5G can provide higher data rates and lower delays, some configuration strategies currently allow UEs to camp on SA cells preferentially. However, in the early stage of 5G system construction, there are defects in the optimization of network parameters. Moreover, 5G uses high frequency bands and large bandwidths, and the power consumption of the terminal when it resides in the SA cell is high, resulting in poor battery life and high heat generation of the UE.
  • the terminal device in the idle state or the connected state can achieve the following effects: (1) When the UE does not need to download/upload data at high speed and the signal quality of the SA cell is normal, the UE can It resides in an NSA cell/common LTE cell to save UE power consumption. (2) When the signal quality of the SA cell is very good, the UE consumes less power, and the UE can camp in the SA cell. In this way, when the UE needs to download/upload data at high speed, the UE can quickly connect to 5G by accessing the SA cell or establishing an ENDC dual connection.
  • the terminal device in the idle state or the connected state can also achieve the following effects: in the NSA/SA hybrid networking area, the UE dynamically switches between the SA cell and the NSA cell, and the signal icon displayed on the UE remains 5G. The user is not aware that the UE resides on the network.
  • the 5G NSA networking involves two network standards, 4G and 5G, so the terminal equipment in the NSA networking method involves the switching display of the 4G network icon and the 5G network icon.
  • Table 1 the Global System for Mobile Communications Association (GSMA) submitted to 3GPP four solutions of CONFIG A/B/C/D terminals displaying 5G network icons.
  • GSMA Global System for Mobile Communications Association
  • the terminal device in this embodiment of the present application may adopt the CONFIG D scheme.
  • the 5G network icon is displayed when the terminal device resides in the NSA cell.
  • the terminal device displays a 5G network icon but there is no NR connection in fact.
  • the terminal device can process services by establishing an ENDC dual connection, and the terminal device displays the 5G network icon to prevent users from thinking that the terminal device has been staying on the 4G network, which improves the user experience.
  • switching from an SA cell to an NSA cell/normal LTE cell can be understood as: switching from an SA cell to an NSA cell, or switching from an SA cell to a normal LTE cell.
  • handover has a broad meaning and a narrow meaning.
  • the UE dynamically camps on different cells and changes from one cell to another.
  • handover of the UE from the SA cell to the NSA cell/normal LTE cell may include: the UE in the idle state is reselected from the SA cell to the NSA cell/normal LTE cell, and the UE is handed over from the SA cell to the NSA cell/normal LTE cell in the connected state.
  • the narrow meaning refers to a cell handover process triggered by reporting a measurement report when the UE is in a connected state.
  • the "handover" in the broad sense can be realized through the “cell handover process” in the narrow sense, and the “handover” in the broad sense can also be realized through the process of cell redirection and the establishment of an ENDC dual connection process.
  • "handover" in a broad sense can be implemented through a cell reselection process and the like.
  • the cell handover process, the cell reselection process, the cell redirection process, and the ENDC dual connection process are all basic processes in the mobile communication network, and reference may be made to the communication protocol.
  • the cell where the UE resides may be the cell where the UE resides in the idle state, or the cell accessed by the UE in the connected state.
  • the following describes the process of handover of the existing terminal equipment from the SA cell to the NSA cell/normal LTE cell with reference to FIG. 5 to FIG. 8 .
  • FIG. 5 is a schematic diagram of a scenario in which an existing terminal device is handed over from an SA cell to an NSA cell/common LTE cell.
  • UE1 and UE2 are currently camping on the SA cell.
  • UE1 and UE2 can be in an idle state or in a connected state.
  • the signal coverage of the SA cell is area 11
  • the signal coverage of the NSA cell/normal LTE cell is area 21, and area 11 and area 21 have overlapping areas.
  • FIG. 5 is only an example, and does not limit the signal coverage of the SA cell, the NSA cell, and the common LTE cell.
  • the eNB and the gNB may be co-located base stations, and the central areas of the area 11 and the area 21 may overlap.
  • the UE is in a connected state and currently accesses the SA cell.
  • FIG. 5 (a) in FIG. 6 and FIG. 7 , the process of switching from the SA cell to the NSA cell/normal LTE cell when the existing terminal equipment is in the connected state will be described. As shown in Figure 7, it can include:
  • the gNB sends the measurement configuration information about the A2 event to the UE.
  • the UE receives the measurement configuration information sent by the gNB.
  • the measurement configuration information may include an A2 event threshold. This embodiment does not limit the specific value of the A2 event threshold.
  • the measurement configuration information may be transmitted through RRC signaling.
  • the UE performs signal measurement on the SA cell. If the signal quality of the SA cell is lower than the A2 event threshold, a measurement report of the A2 event is reported. Correspondingly, the gNB receives the measurement report sent by the UE.
  • A2 event threshold is -108dBm.
  • UE2 detects that the signal quality of the SA cell is -109dBm, which is lower than -108dBm, and reports the measurement report of the A2 event.
  • UE1 detects that the signal quality of the SA cell is -107dBm, which is higher than -108dBm, and does not report the A2 event.
  • the gNB sends the measurement configuration information about the B1 event to the UE.
  • the UE receives the measurement configuration information sent by the gNB.
  • the measurement configuration information may include a B1 event inter-system neighbor threshold. This embodiment does not limit the specific value of the adjacent cell threshold of the different system of the B1 event.
  • the measurement configuration information may further include the frequency points of the inter-system cells (NSA cells and/or common LTE cells).
  • the UE After the UE reports the A2 event, it waits for the network side to configure the measurement of the different system B1 event. After receiving the measurement configuration information about the B1 event, the UE performs signal measurement on the neighboring cell of the different system.
  • the gNB receives the measurement report sent by the UE.
  • the gNB determines the target cell according to the B1 event reported by the UE, and the UE performs a cell handover process.
  • the cell handover procedure may be an existing procedure of handover from an SA cell to an NSA cell/normal LTE cell.
  • the signal quality of the SA cell needs to be lower than the A2 event threshold configured on the network side first.
  • the UE After the UE reports the A2 event, it triggers the network side to configure the different system B1 event measurement.
  • the A2 event threshold is usually low, which makes it difficult for the UE to switch from the SA cell to the NSA cell/normal LTE cell, and it is easier to camp in the SA cell.
  • the UE1 in FIG. 5 does not report the A2 event and cannot be handed over.
  • the power consumption of the UE residing in the SA cell is already very high, the mobile phone heats up seriously, and the battery life is shortened.
  • the UE when the UE reports the B1 event, it will report all neighboring cells of different systems that satisfy the B1 event, and the network side determines the target cell.
  • the target cell may be an NSA cell or an ordinary LTE cell, which the UE cannot control. Refer to (a) in Figure 6 for the handover result. If the target cell is an ordinary LTE cell, the signal icon displayed by the UE will be changed from 5G to 4G, which affects the user experience.
  • the UE is in an idle state and currently camps on an SA cell.
  • FIG. 5 (b) in FIG. 6 and FIG. 8 , the process of switching from the SA cell to the NSA cell/normal LTE cell when the existing terminal equipment is in an idle state will be described. As shown in Figure 8, it can include:
  • the UE currently camps on the SA cell.
  • This step may be an existing cell selection process.
  • S802 The UE judges whether the signal quality of the currently camped SA cell is lower than the serving cell threshold 1 configured by the network side for reselection to a low-priority cell.
  • reselection from an SA cell to an LTE cell is generally considered to be a low-priority reselection, and conversely, reselection from an LTE cell to an SA cell is considered to be a high-priority reselection.
  • This embodiment does not limit the specific value of the threshold 1. If it is determined that the signal quality of the currently camped SA cell is lower than the serving cell threshold 1 configured on the network side for reselection to a low-priority cell, perform S803.
  • the UE determines whether there is an NSA cell/common LTE cell whose cell signal quality is greater than the low-priority reselection neighbor threshold 2 configured on the network side.
  • this embodiment does not limit the specific value of the low-priority reselection neighbor threshold 2 . If it is determined that there is an NSA cell/common LTE cell whose cell signal quality is greater than the low-priority reselection neighbor threshold 2 configured on the network side, S804 is performed.
  • the UE performs a cell reselection process, and reselects to an NSA cell/common LTE cell.
  • This step may be an existing cell reselection process from SA cell to NSA cell/normal LTE cell.
  • the principle is similar to that when the UE is in the connected state, both involving the local system signal threshold and the different system signal threshold configured by the network side.
  • the involved parameters include the A2 event threshold and the B1 event inter-system neighbor threshold.
  • the involved parameters include a serving cell threshold 1 for reselection to a low-priority cell and a low-priority re-selection neighbor threshold 2.
  • the UE is more likely to camp in the SA cell, which leads to increased power consumption, severe heat generation, and shortened battery life.
  • the UE cannot control whether the reselected cell is an NSA cell or an ordinary LTE cell, and the reselection result is shown in (b) of FIG. 6 . If the reselected cell is an ordinary LTE cell, the signal icon displayed by the UE will be changed from 5G to 4G, which affects the user experience.
  • the embodiment of the present application provides a cell handover method, which is suitable for a scenario where a terminal device is handed over from an SA cell to an NSA cell/ordinary LTE cell.
  • the UE may set a private threshold 1, and the private threshold 1 is greater than the A2 event threshold configured by the network side or the serving cell threshold 1 for reselection to a low-priority cell.
  • the UE can compare the signal quality of the SA cell with the private threshold 1, and when the signal quality of the SA cell is lower than the private threshold 1, the terminal device can switch from the SA cell to the NSA cell/normal LTE cell.
  • the private threshold 1 the handover judgment conditions of the system when the terminal equipment is switched from the SA cell to the LTE cell is relaxed.
  • the signal quality of the SA cell is average or poor, it can be switched to the LTE cell, which saves UE power consumption and reduces power consumption.
  • the UE heats up and the battery life is extended.
  • FIG. 9 is a schematic diagram of a scenario in which a terminal device is handed over from an SA cell to an NSA cell/normal LTE cell according to an embodiment of the present application.
  • the terminal device can obtain the A2 event threshold configured on the network side or the serving cell threshold 1 for reselection to the low-priority cell, and compare the signal quality of the SA cell with it. The comparison is used as the switching judgment condition of the system.
  • the terminal device can obtain the A2 event threshold configured on the network side or the serving cell threshold 1 for reselection to the low-priority cell, but compare the signal quality of the SA cell with the private threshold 1 set on the UE side, as this The switching judgment condition of the system.
  • the signal quality of the SA cell detected by UE1 and UE2 is lower than the private threshold 1, and both can be switched from the SA cell to the NSA cell/normal LTE cell.
  • the UE is in a connected state and currently accesses the SA cell.
  • the cell handover method provided in this embodiment may include:
  • the gNB sends the measurement configuration information about the A2 event to the UE.
  • the UE performs signal measurement on the SA cell. If the signal quality of the SA cell is lower than the private threshold 1, the measurement report of the A2 event is reported. Correspondingly, the gNB receives the measurement report sent by the UE.
  • A2 event threshold is -108dBm
  • the private threshold 1 is -106dBm.
  • UE1 detects that the signal quality of the SA cell is -107dBm. Although it is higher than -108dBm, but lower than -106dBm, UE1 can report the A2 event.
  • the gNB sends the measurement configuration information about the B1 event to the UE.
  • the B2 event can also be used, then the gNB will send the measurement configuration information about the B2 event to the UE.
  • the UE performs signal measurement on the neighboring cells of the different system. If the signal quality of the neighboring cell of the different system is higher than the threshold 1, the measurement report of the B1 event is reported. Correspondingly, the gNB receives the measurement report sent by the UE.
  • B2 events can also be used. Then, if the signal quality of the SA cell is lower than the private threshold 1, and the signal quality of the neighboring cell of the different system is higher than the threshold 1, the measurement report of the B2 event is reported.
  • the threshold value 1 may be the threshold of the neighboring cell of the different system of the B1 event.
  • S1104 is the same as S704, and the switching judgment condition of the different system is the same as that of the existing implementation.
  • the threshold 1 may be the B2 event inter-system neighbor threshold.
  • the threshold 1 may be the private threshold 2 set by the UE, and the specific value of the private threshold 2 is not limited in this embodiment.
  • the UE can compare the signal quality of the neighboring cell of the different system with the private threshold 2, and report the B1 event when it is higher than the private threshold 2, which improves the flexibility of the threshold setting for the UE to report the B1 event.
  • the gNB determines the target cell according to the B1 event reported by the UE, and the UE performs a cell handover process.
  • the UE is in an idle state and currently camps on an SA cell.
  • the cell handover method provided in this embodiment may include:
  • the UE currently camps on the SA cell.
  • the UE judges whether the signal quality of the currently camped SA cell is lower than the private threshold 1 set by the UE.
  • the UE judges whether there is an NSA cell/common LTE cell whose cell signal quality is greater than the threshold 1.
  • the UE may perform LTE measurement according to the network neighbor configuration, or perform LTE cell search autonomously.
  • the UE may autonomously search for an LTE cell according to a historical frequency point, and the historical frequency point may include the frequency point of the LTE cell where the UE once camped. If there is an NSA cell/normal LTE cell whose cell signal quality is greater than the threshold 1, perform S804.
  • the threshold 1 may be the low-priority neighbor reselection threshold 2.
  • S1203 is the same as S803.
  • the threshold 1 may be the private threshold 2 set by the UE.
  • the UE can compare the signal quality of the LTE cell with the private threshold 2, which improves the flexibility of the threshold setting when the UE determines the target LTE cell.
  • the UE performs a cell reselection process, and reselects to an NSA cell/common LTE cell.
  • the UE can identify whether the LTE cell is an NSA cell or a normal LTE cell.
  • the UE performs the LTE cell search or the signal measurement of the LTE cell, it may first determine whether the NSA cell satisfies the cell handover condition. If there is an NSA cell that satisfies the cell handover condition, the SA cell is handed over to the NSA cell, which realizes the autonomous selection of the UE to preferentially handover from the SA cell to the NSA cell.
  • the UE uses the CONFIG D scheme to display the signal icon, the signal icon is always 5G, which improves the user experience.
  • the UE does not perform handover and still resides in the SA cell to ensure that the signal icon is displayed as 5G; in another implementation, the UE can determine whether a common LTE cell is The cell handover conditions are met. If there is a common LTE cell that meets the cell handover conditions, the SA cell is switched to the common LTE cell to reduce the power consumption of the UE.
  • the cell handover result can be seen in Figure 10. When the UE is in the connected state or in the idle state, it can preferentially switch to the NSA cell.
  • an implementation manner may include: the UE acquires current location information, and sends the location information to a cloud server.
  • the cloud server determines a first NSA cell list within a preset geographic range according to the location information, and sends the first NSA cell list to the UE.
  • the UE receives the first NSA cell list, and identifies whether the LTE cell is an NSA cell according to the first NSA cell list.
  • the cloud server stores a list of NSA cells.
  • the cloud server may update the NSA cell list stored in the cloud server periodically or triggered by an event.
  • the location information may include at least one of the following: longitude and latitude information, and a cell identifier of a cell where the UE currently resides.
  • This embodiment does not limit the manner in which the UE obtains the location information, for example, positioning is performed through a global positioning system (global positioning system, GPS) component or a Beidou system positioning component installed on the UE.
  • GPS global positioning system
  • Beidou system positioning component installed on the UE.
  • another implementation manner may include: the UE identifies whether the LTE cell is an NSA cell according to historical information of the NSA cell.
  • the NSA cell history information may include the NSA cells that the UE once camped on. Specifically, for the LTE cell where the UE once resided, it can be determined whether the LTE cell is an NSA cell by identifying the upper layer indicator in the system message SIB2 or whether an ENDC dual connection has been established.
  • another implementation manner may include: the UE actively searches for an LTE cell, and determines the upper layer indicator in the identification system message SIB2. Whether the LTE cell is an NSA cell.
  • the private threshold 1 may include a private threshold 1a and a private threshold 1b, where the private threshold 1a>the private threshold 1b, and the specific value is not limited in this embodiment. See Figure 15 and Figure 18 for details.
  • the private threshold 2 may include a private threshold 2a and a private threshold 2b, where the private threshold 2a ⁇ private threshold 2b, and the specific value is not limited in this embodiment.
  • the private threshold 2a is for the NSA cell
  • the private threshold 2b is for the normal LTE cell.
  • the UE determines that the signal quality of the NSA cell is greater than the private threshold 2a
  • the UE switches from the SA cell to the NSA cell.
  • the UE determines that the signal quality of no NSA cell is greater than the private threshold 2a, but there is a common LTE cell whose signal quality is greater than the private threshold 2b, the UE switches from the SA cell to the common LTE cell.
  • the threshold for the UE to switch to the NSA cell is reduced, making it easier for the UE to switch to the NSA cell, giving priority to ensuring the service rate, reducing the power consumption of the UE, and ensuring that the UE displays the 5G signal icon.
  • Embodiments when the UE is in a connected state and an idle state are respectively described in detail below.
  • the UE is in a connected state in FIGS. 13 to 15
  • the UE is in an idle state in FIGS. 16 to 18 .
  • FIG. 13 shows an implementation manner of S1104 and S705 in FIG. 11 , and the execution subject is the UE.
  • S1104 includes S1301 to S1302, and S705 may include S1303.
  • the UE in the connected state can be handed over from the SA cell to the NSA cell.
  • the UE determines whether the signal quality of the NSA cell is higher than the threshold 1.
  • S1302 to S1303 are performed. If the signal quality of no NSA cell is higher than the threshold 1, S1304 is performed.
  • the UE reports the measurement report of the B1 event.
  • the measurement report includes NSA cells whose signal quality is higher than threshold 1.
  • the network side determines the target cell according to the measurement report. Since the measurement report includes the NSA cell, the target cell is the NSA cell, which realizes the autonomous selection of the UE to preferentially switch from the SA cell to the NSA cell.
  • the UE switches to the NSA cell.
  • the UE does not report the measurement report of the B1 event, and continues to camp in the SA cell.
  • FIG. 14 shows an implementation manner of S1104 and S705 in FIG. 11 , and the execution subject is the UE.
  • S1104 includes S1301-S1302 and S1305-S1306, and S705 may include S1303 and S1307.
  • the UE in the connected state can be handed over from the SA cell to the NSA cell/normal LTE cell, and preferentially handed over to the NSA cell.
  • the UE determines whether the signal quality of the NSA cell is higher than the threshold 1.
  • S1302 to S1303 are performed. If the signal quality of no NSA cell is higher than the threshold 1, S1305 to S1307 are performed.
  • the UE reports the measurement report of the B1 event.
  • the measurement report includes NSA cells whose signal quality is higher than threshold 1.
  • the UE switches to the NSA cell.
  • the UE determines whether there is a common LTE cell whose signal quality is higher than the threshold 1.
  • the UE reports the measurement report of the B1 event.
  • the measurement report includes ordinary LTE cells whose signal quality is higher than the threshold 1.
  • the UE switches to a common LTE cell.
  • Fig. 15 shows an implementation manner of S1102, S1104 and S705 in Fig. 11, and the execution subject is the UE.
  • S1102 may include S1308-S1309
  • S1104 may include S1301b-S1302b, S1305b-S1306b and S1301a-S1302a
  • S705 may include S1303b, S1307b and S1303a.
  • S1301a to S1304a may correspond to S1301 to S1304 in FIG. 13
  • S1301b to S1307b may correspond to S1301 to S1307 of FIG. 14 .
  • the private threshold 1 may include a private threshold 1a and a private threshold 1b.
  • the UE can switch from the SA cell to the NSA cell.
  • the UE can switch from the SA cell to the NSA cell/normal LTE cell, and preferentially switch to the NSA cell.
  • FIG. 16 shows an implementation manner of S1203 and S804 in FIG. 12 , and the execution subject is the UE.
  • S1203 includes S1601, and S804 may include S1602.
  • the UE can reselect from the SA cell to the NSA cell.
  • the UE determines that the signal quality of the SA cell is less than the private threshold 1, the UE is triggered to search for the NSA cell. The UE determines whether the signal quality of the NSA cell is higher than the threshold 1.
  • the UE reselects from the SA cell to the NSA cell.
  • the UE continues to camp on the SA cell.
  • FIG. 17 shows an implementation manner of S1203 and S804 in FIG. 12 , and the execution subject is the UE.
  • S1203 includes S1601 and S1604, and S804 may include S1602 and S1605.
  • the UE can reselect from the SA cell to the NSA cell/normal LTE cell, and preferentially reselect to the NSA cell.
  • the UE determines that the signal quality of the SA cell is less than the private threshold 1, the UE is triggered to search for the NSA cell. The UE determines whether the signal quality of the NSA cell is higher than the threshold 1.
  • the UE reselects from the SA cell to the NSA cell.
  • the UE continues to search for a common LTE cell.
  • the UE determines whether there is a common LTE cell whose signal quality is higher than the threshold 1.
  • the UE reselects from the SA cell to a common LTE cell.
  • Fig. 18 shows an implementation manner of S1202, S1203 and S804 in Fig. 12, and the execution subject is the UE.
  • S1202 may include S1308 to S1309
  • S1203 may include S1601b, S1604b and S1601a
  • S804 may include S1602b, S1605b and S1602a.
  • S1601a to S1603a may correspond to S1601 to S1603 in FIG. 16
  • S1601b to S1605b may correspond to S1601 to S1605 of FIG. 17 .
  • the private threshold 1 may include a private threshold 1a and a private threshold 1b.
  • the UE can reselect from the SA cell to the NSA cell.
  • the UE can reselect from the SA cell to the NSA cell/normal LTE cell, and preferentially reselect to the NSA cell.
  • FIG. 19 is a schematic diagram of a scenario in which an existing terminal device is handed over from an NSA cell/normal LTE cell to an NR cell.
  • UE1 and UE2 are currently camping on an NSA cell/normal LTE cell.
  • UE1 and UE2 can be in an idle state or in a connected state.
  • the coverage area of the NSA cell/normal LTE cell is area 21, and the signal coverage area of the NR cell is area 11.
  • the signal quality of the NR cell is very good, for example, greater than -95dBm, and this embodiment does not limit the threshold value for measuring the very good signal of the cell.
  • Area 11 and Area 21 have overlapping areas.
  • UE1 is also located in area 11 and UE2 is also located in area 12. It should be noted that FIG. 19 does not limit the signal coverage of the NR cell, the NSA cell and the common LTE cell.
  • the UE is in a connected state and currently accesses an NSA cell/common LTE cell.
  • FIG. 19 (a) of FIG. 20 and FIG. 21 , the process of switching from an NSA cell/normal LTE cell to an NR cell when an existing terminal device is in a connected state will be described. As shown in Figure 21, it can include:
  • the eNB sends measurement configuration information about the B1 event to the UE.
  • the UE receives the measurement configuration information sent by the eNB.
  • the measurement configuration information may include a B1 event inter-system neighbor threshold. This embodiment does not limit the specific value of the adjacent cell threshold of the different system of the B1 event.
  • the measurement configuration information may further include a frequency point of an inter-system cell (NR cell).
  • the measurement configuration information may be transmitted through RRC signaling.
  • the UE performs signal measurement on the NR cell. If the signal quality of the NR cell is higher than the B1 event inter-system neighbor threshold, the measurement report of the B1 event is reported. Correspondingly, the eNB receives the measurement report sent by the UE.
  • the threshold of the neighboring cell of the B1 event inter-system is -106dBm.
  • UE2 detects that the signal quality of the NR cell is -80dBm, which is higher than -106dBm, and reports the measurement report of the B1 event.
  • UE1 detects that the signal quality of the NR cell is -105dBm, which is higher than -106dBm, and reports the measurement report of the B1 event.
  • S2103 The eNB determines the target cell according to the B1 event reported by the UE, and the UE switches from the NSA cell/normal LTE cell to the NR cell.
  • the target cell may be a 5G cell connected to the NSA cell, and the UE may establish an ENDC dual connection with the target cell.
  • the target cell may be an SA cell, and the UE may switch to the SA cell through a cell redirection procedure or a cell handover procedure.
  • the target cell may be the SA cell, and the UE may switch to the SA cell through the cell redirection procedure or the cell handover procedure.
  • the cell handover procedure, the cell redirection procedure and the establishment of the ENDC dual connection may all be existing procedures.
  • the signal quality of the NR cell needs to be higher than the B1 event inter-system neighbor threshold configured on the network side.
  • the B1 event inter-system neighbor threshold is usually low, which makes it easy for the UE to switch from the NSA cell/normal LTE cell to the NR cell.
  • the B1 event can still be reported to complete the handover.
  • the UE is in an idle state and currently camps on an NSA cell/normal LTE cell.
  • FIG. 20 and FIG. 22 the process of switching from an NSA cell/normal LTE cell to an SA cell when an existing terminal device is in a connected state will be described. As shown in Figure 22, it can include:
  • the UE currently resides in an NSA cell/common LTE cell.
  • This step may be an existing cell selection process.
  • the UE judges whether there is an SA cell whose cell signal quality is greater than the high-priority reselection neighbor threshold 3 configured by the network side.
  • reselection from an SA cell to an LTE cell is generally considered to be a low-priority reselection, and conversely, reselection from an LTE cell to an SA cell is considered to be a high-priority reselection.
  • This embodiment does not limit the specific value of the high-priority reselection neighbor cell threshold 3 .
  • the UE may perform NR measurements according to the network neighbor configuration. If it is determined that there is an SA cell whose cell signal quality is greater than the high-priority reselection neighbor threshold 3, S2203 is executed.
  • the UE performs a cell reselection process, and reselection to the SA cell.
  • This step may be an existing cell reselection process from SA cell to NSA cell/normal LTE cell.
  • the principle is similar to that when the UE is in the connected state, and both involve the inter-system signal threshold configured by the network side.
  • the involved parameters include the B1 event inter-system neighbor threshold.
  • the involved parameters include the high-priority reselection neighbor threshold 3.
  • the embodiment of the present application provides a cell handover method, which is suitable for a scenario where a terminal device is handed over from an NSA cell/normal LTE cell to an NR cell.
  • the UE may set a private threshold 3, and the private threshold 3 is greater than the B1 event inter-system neighbor threshold or high-priority reselection neighbor threshold 3 configured on the network side.
  • the UE can compare the signal quality of the NR cell with the private threshold 3. When the signal quality of the NR cell is higher than the private threshold 3, the terminal device can switch from the NSA cell/normal LTE cell to the NR cell.
  • the private threshold 3 the handover judgment condition of the terminal equipment from the NSA cell/normal LTE cell to the NR cell is improved.
  • the signal quality of the NR cell is very good, it can be switched to the NR cell, which saves UE power consumption. , Reduce the heat generation of the UE and prolong the battery life. At the same time, the service rate is also improved.
  • this embodiment does not limit the specific value of the private threshold 3 .
  • FIG. 23 is a schematic diagram of a scenario in which a terminal device is handed over from an NSA cell/normal LTE cell to an NR cell according to an embodiment of the present application.
  • the terminal device can obtain the B1 event inter-system neighbor threshold or high-priority reselection neighbor threshold 3 configured on the network side, and compare the signal quality of the NR cell with the The comparison is used as the switching judgment condition of the different system.
  • the terminal device can obtain the B1 event inter-system neighbor threshold or high-priority reselection neighbor threshold 3 configured on the network side, but compare the signal quality of the NR cell with the private threshold 3 set on the UE side, as The switching judgment condition of different systems.
  • UE1 detects that the signal quality of the NR cell is lower than the private threshold 3, will not report the B1 event, and will not switch from the NSA cell/normal LTE cell to the NR cell.
  • UE2 detects that the signal quality of the NR cell is higher than the private threshold 3, and can switch from the NSA cell/normal LTE cell to the NR cell.
  • the UE is in a connected state and currently accesses an NSA cell/common LTE cell.
  • the cell handover method provided in this embodiment may include:
  • the eNB sends measurement configuration information about the B1 event to the UE.
  • the B2 event can also be used, then the gNB will send the measurement configuration information about the B2 event to the UE.
  • the UE performs signal measurement on the NR cell. If the signal quality of the NR cell is higher than the private threshold 3, the measurement report of the B1 event is reported. Correspondingly, the eNB receives the measurement report sent by the UE.
  • B2 events can also be used. Then, if the signal quality of the NSA cell/common LTE cell is lower than the B2 event serving cell threshold, and the signal quality of the NR cell is higher than the private threshold 3, the measurement report of the B2 event is reported.
  • S2103 The eNB determines the target cell according to the B1 event reported by the UE, and the UE switches from the NSA cell/normal LTE cell to the NR cell.
  • the UE is in an idle state and currently camps on an NSA cell/normal LTE cell.
  • the cell handover method provided in this embodiment may include:
  • the UE currently resides in an NSA cell/common LTE cell.
  • the UE judges whether there is an SA cell whose cell signal quality is greater than the private threshold 3.
  • the UE may perform NR measurement according to the network neighbor configuration, or perform SA cell search autonomously.
  • the UE may autonomously search for SA cells according to historical frequency points, and the historical frequency points may include the frequency points of the SA cells where the UE once camped. If there is an SA cell whose cell signal quality is greater than the private threshold 3, perform S2203.
  • the UE performs a cell reselection process, and reselection to the SA cell.
  • the embodiment of the present application further provides a cell handover method, which is suitable for a scenario where a terminal device needs to be quickly handed over from a common LTE cell to an NR cell.
  • the UE currently camps on a common LTE cell and may be in a connected state or an idle state.
  • the UE needs to quickly switch from a common LTE cell to an NR cell, the UE can actively initiate a process of switching from a common LTE cell to an NR cell.
  • the UE may set a private threshold 4, and the private threshold 4 is smaller than the private threshold 3. This embodiment does not limit the specific value of the private threshold 4.
  • the UE determines the target NR cell, it can compare the signal quality of the NR cell with the private threshold 4.
  • the terminal equipment can switch from the normal LTE cell to the NR cell.
  • the service rate requirement is met on the basis that the terminal equipment is rapidly switched from the common LTE cell to the NR cell.
  • the cell handover method provided in this embodiment may include:
  • the whitelisted applications may be applications that perform large-traffic services, such as video applications, data download applications, and speed measurement applications.
  • S2601 determines a preset condition for the terminal device to quickly switch from an ordinary LTE cell to an NR cell, and may also be other preset conditions, which are not limited in this embodiment. For example, the UE determines that the amount of data to be uploaded or the data to be downloaded is greater than a preset value. For another example, the UE determines that the data to be transmitted has a relatively high latency requirement.
  • the terminal initiates the re-establishment process at the 4G access layer according to the standard protocol. Specifically, the RRC link and the layer 3/layer 2 data connection are first released locally, and then the cell search is started. During the search process The NR cell is searched first. If a qualified NR cell is found, the UE initiates an access procedure in the NR cell and the RRC connection is re-established. If no qualified NR cell is found, the UE searches for the LTE cell and connects to the LTE cell. (It may be the original serving cell, or it may not be, no provision is made) to complete the re-establishment process and re-establish the RRC connection.
  • the UE when the UE determines the target NR cell, the signal quality of the NR cell can be compared with the private threshold 4.
  • the UE can actively initiate a handover from an ordinary LTE cell to an NR cell, which shortens the handover delay.
  • the UE may independently search for NR cells according to historical frequency points, and the historical frequency points may include the frequency points of the NR cells where the UE once camped.
  • the UE accesses the NR cell.
  • the terminal device includes corresponding hardware and/or software modules for executing each function.
  • the present application can be implemented in hardware or a combination of hardware and computer software in conjunction with the algorithm steps of the examples described in the embodiments disclosed herein. Whether a function is performed by hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functionality for each particular application in conjunction with the embodiments, but such implementations should not be considered beyond the scope of this application.
  • the terminal device may be divided into functional modules according to the foregoing method examples.
  • each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module.
  • the division of modules in the embodiments of the present application is schematic, and is only a logical function division, and there may be other division manners in actual implementation.
  • the names of the modules in the embodiments of the present application are schematic, and the names of the modules are not limited in actual implementation.
  • FIG. 27 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.
  • the terminal device may include: a communication module 2701 and a processing module 2702 .
  • the communication module 2701 is used for sending data to or receiving data from other devices. For example, receiving system messages, receiving measurement configuration information of A2 events, measurement configuration information of B1 events, measurement configuration information of B2 events, sending measurement reports of A2 events, sending measurement reports of B1 events, or sending measurement reports of B2 events.
  • the processing module 2702 is used to detect the signal quality of the current serving cell, detect the signal quality of the different system cells, search for cells, determine the target cell for handover, determine the target cell for reselection, or perform cell reselection process, cell handover process, setup ENDC dual connection, etc.
  • FIG. 28 shows another structure of a terminal device provided by an embodiment of the present application.
  • the terminal device includes: a processor 2801 , a receiver 2802 , a transmitter 2803 , a memory 2804 , and a bus 2805 .
  • the processor 2801 includes one or more processing cores, and the processor 2801 executes various functional applications and information processing by running software programs and modules.
  • the receiver 2802 and the transmitter 2803 may be implemented as a communication component, which may be a baseband chip.
  • the memory 2804 is connected to the processor 2801 through the bus 2805.
  • the memory 2804 may be configured to store at least one program instruction, and the processor 2801 may be configured to execute the at least one program instruction, so as to implement the technical solutions of the foregoing embodiments.
  • the implementation principle and technical effect thereof are similar to the related embodiments of the above method, and are not repeated here.
  • the processor can read the software program in the memory, interpret and execute the instructions of the software program, and process the data of the software program.
  • the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the control circuit in the control circuit.
  • the signal is sent out in the form of electromagnetic waves through the antenna.
  • the control circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, which converts the baseband signal into data and processes the data.
  • FIG. 28 only shows one memory and a processor. In an actual terminal, there may be multiple processors and memories.
  • the memory may also be referred to as a storage medium or a storage device, etc., which is not limited in this embodiment of the present application.
  • the processor may include a baseband processor and a central processing unit.
  • the baseband processor is mainly used to process communication data
  • the central processing unit is mainly used to execute software programs and process data of the software programs.
  • the baseband processor and the central processing unit may be integrated into one processor, or may be independent processors, which are interconnected through technologies such as a bus.
  • a terminal may include multiple baseband processors to adapt to different network standards
  • a terminal may include multiple central processors to enhance its processing capability
  • various components of the terminal may be connected through various buses.
  • the baseband processor can also be expressed as a baseband processing circuit or a baseband processing chip.
  • the central processing unit can also be expressed as a central processing circuit or a central processing chip.
  • the function of processing the communication protocol and communication data may be built in the processor, or may be stored in the memory in the form of a software program, and the processor executes the software program to realize the baseband processing function.
  • the memory can be integrated in the processor or independent of the processor.
  • the memory includes a cache, which can store frequently accessed data/instructions.
  • the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, which can implement or
  • a general purpose processor may be a microprocessor or any conventional processor or the like.
  • the steps of the methods disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware processor, or executed by a combination of hardware and software modules in the processor.
  • the memory may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SS), etc., or may also be a volatile memory (volatile memory), for example Random-access memory (RAM).
  • Memory is, without limitation, 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 this embodiment of the present application may also be a circuit or any other device capable of implementing a storage function, for storing program instructions and/or data.
  • the methods provided by the embodiments of the present application may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • When implemented in software it can be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated.
  • the computer may be a general purpose computer, a special purpose computer, a computer network, network equipment, user equipment, or other programmable apparatus.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server, or data center Transmission to another website site, computer, server, or data center by wire (eg, coaxial cable, optical fiber, digital subscriber line, DSL), or wireless (eg, infrared, wireless, microwave, etc.)
  • a readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media.
  • the available media can be magnetic media (eg, floppy disks, hard disks, magnetic tapes) ), optical media (eg, digital video disc (DWD), or semiconductor media (eg, SSD), etc.).
  • the embodiments of the present application provide a computer program product, which enables the terminal to execute the technical solutions in the foregoing embodiments when the computer program product runs on a terminal.
  • the implementation principle and technical effect thereof are similar to those of the above-mentioned related embodiments, which will not be repeated here.
  • the embodiments of the present application provide a computer-readable storage medium, on which program instructions are stored, and when the program instructions are executed by a terminal, the terminal executes the technical solutions of the foregoing embodiments.
  • the implementation principle and technical effect thereof are similar to those of the above-mentioned related embodiments, which will not be repeated here.

Landscapes

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

Abstract

本申请实施例提供一种小区切换方法、通信装置及存储介质。一个场景为，通信装置驻留在SA小区且处于连接态，小区切换方法包括：接收A2事件的测量配置信息；若SA小区的信号质量低于第一私有门限，则发送A2事件的第一测量报告；第一私有门限为通信装置设置的且高于A2事件门限；接收异系统测量事件的测量配置信息，其中包括LTE邻区；对LTE邻区进行信号测量，发送第二测量报告；其中，第二测量报告中的LTE小区的信号质量高于第一阈值；通过小区切换流程从SA小区切换至目标小区，目标小区为LTE小区中的一个小区。通过设置第一私有门限，当SA小区的信号质量一般或较差时就可以切换到LTE小区，节约了UE功耗。

Description

小区切换方法、通信装置及存储介质
本申请要求于2020年10月22日提交国家知识产权局、申请号为202011142864.9、申请名称为“小区切换方法、通信装置及存储介质”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
本申请涉及通信技术领域，特别涉及一种小区切换方法、通信装置及存储介质。
背景技术
第五代移动通信网络(5th generation mobile networks，5G)是最新一代的移动通信技术，相比于早期的4G、3G、2G等移动通信技术，5G能够提供更高的数据速率、更低的延迟、万物互联的全连接、更节省能源、更低的成本、更高的系统容量和大规模设备接入。
目前，一些配置策略为让终端设备优先驻留在5G小区。但是，在5G系统建设初期，网络参数优化存在缺陷，而且，5G采用高频段和大带宽，终端驻留5G小区时的功耗较高。
发明内容
本申请提供一种小区切换方法、通信装置及存储介质，当5G小区的信号质量一般时，终端设备可以驻留在LTE小区，节省了功耗。
第一方面，提供了一种小区切换方法，应用于通信装置，通信装置驻留在SA小区且处于连接态，方法包括：接收A2事件的测量配置信息，A2事件的测量配置信息包括A2事件门限；对SA小区进行信号测量，若SA小区的信号质量低于第一私有门限(本申请实施例中的私有门限1)，则发送A2事件的第一测量报告；第一私有门限为通信装置设置的且高于A2事件门限；接收异系统测量事件的测量配置信息，异系统测量事件的测量配置信息包括SA小区的LTE邻区的信息；对LTE邻区进行信号测量，发送第二测量报告；其中，第二测量报告中的LTE小区的信号质量高于第一阈值；通过小区切换流程从SA小区切换至目标小区，目标小区为LTE小区中的一个小区。
第一方面提供的通信方法，可以应用于连接态终端设备从SA小区切换到锚点LTE小区/普通LTE小区的场景。终端设备可以设置私有门限1，私有门限1大于网络侧配置的A2事件门限。终端设备可以将SA小区的信号质量与私有门限1进行比较，当SA小区的信号质量低于私有门限1时，终端设备可以从SA小区切换到锚点LTE小区/普通LTE小区。通过设置私有门限1，放宽了终端设备从SA小区切换到LTE小区时本系统的切换判断条件，当SA小区的信号质量一般或较差时就可以切换到LTE小区，节约了终端设备功耗、降低了终端设备发热量、延长了续航时间。
一种可能的实现方式中，对LTE邻区进行信号测量，发送第二测量报告，包括：获取锚点LTE小区信息；根据锚点LTE小区信息对LTE邻区中的锚点LTE小区进行信号测量；若LTE邻区中存在锚点LTE小区的信号质量高于第一阈值，则发送第二测量报告；LTE小区和目标小区均为锚点LTE小区。
在该实现方式中，先判断锚点LTE小区是否高于第一阈值。如果存在锚点LTE小区高于第一阈值，则从SA小区切换至锚点LTE小区，实现了终端设备从SA小区优先切换至锚点LTE小区的自主选择，终端设备采用CONFIG D方案显示信号图标时，信号图标一直为5G，提升了用户体 验。
一种可能的实现方式中，还包括：若LTE邻区中没有锚点LTE小区的信号质量高于第一阈值，则对LTE邻区中的普通LTE小区进行信号测量；若LTE邻区中存在普通LTE小区的信号质量高于第一阈值，则发送第二测量报告；LTE小区和目标小区均为普通LTE小区。
在该实现方式中，先判断锚点LTE小区是否高于第一阈值，如果没有锚点LTE小区高于第一阈值，再判断普通LTE小区是否高于第一阈值。如果存在普通LTE小区高于第一阈值，则从SA小区切换至普通LTE小区，降低终端设备的功耗。
一种可能的实现方式中，第一私有门限包括私有门限1a和私有门限1b，私有门限1a>私有门限1b；发送第二测量报告之前，还包括：确定SA小区的信号质量低于私有门限1a且高于私有门限1b。
在该实现方式中，设置有两个第一私有门限。SA小区的信号质量低于私有门限1a且高于私有门限1b时，如果存在锚点LTE小区高于第一阈值，终端设备可以从SA小区切换到锚点LTE小区，如果不存在锚点LTE小区高于第一阈值，终端设备继续驻留在SA小区，确保了业务速率和信号图标一直显示为5G，提升了用户体验。
一种可能的实现方式中，第一私有门限包括私有门限1a和私有门限1b，私有门限1a>私有门限1b；发送第二测量报告之前，还包括：确定SA小区的信号质量低于私有门限1b。
在该实现方式中，设置有两个第一私有门限。SA小区的信号质量低于私有门限1b时，如果存在锚点LTE小区高于第一阈值，终端设备可以从SA小区切换到锚点LTE小区，确保了业务速率和信号图标一直显示为5G，提升了用户体验。如果不存在锚点LTE小区高于第一阈值，但是存在普通LTE小区高于第一阈值，终端设备可以从SA小区切换到普通LTE小区，确保降低终端设备的功耗。
一种可能的实现方式中，获取锚点LTE小区信息，包括：将通信装置的位置信息发送给云服务器，接收云服务器发送的锚点LTE小区信息；和/或，获取锚点LTE小区信息，锚点LTE小区信息包括通信装置曾经驻留的锚点LTE小区的信息。
一种可能的实现方式中，异系统测量事件的测量配置信息包括B1事件的测量配置信息或者B2事件的测量配置信息。
一种可能的实现方式中，第一阈值包括下列中的任意一项：B1事件异系统邻区门限、B2事件异系统邻区门限或第二私有门限(本申请实施例中的私有门限2)，第二私有门限为通信装置设置的。
在该实现方式中，第一阈值有多种选择，提升了终端设备上报B1事件的门限设置的灵活度。
一种可能的实现方式中，第二私有门限可以包括私有门限2a和私有门限2b，私有门限2a<私有门限2b。私有门限2a针对锚点LTE小区，私有门限2b针对普通LTE小区。如果终端设备确定存在锚点LTE小区的信号质量大于私有门限2a，则从SA小区切换至锚点LTE小区。如果终端设备确定没有锚点LTE小区的信号质量大于私有门限2a，但存在普通LTE小区的信号质量大于私有门限2b，则从SA小区切换至普通LTE小区。通过设置私有门限2a<私有门限2b，降低了终端设备切换到锚点LTE小区的门限值，使得终端设备更容易切换到锚点LTE小区，优先保障业务速率，同时降低了终端设备功耗，确保终端设备显示5G信号图标。
第二方面，提供了一种小区切换方法，应用于通信装置，通信装置驻留在SA小区且处于空闲态，方法包括：在检测到SA小区的信号质量低于第一私有门限时，触发搜索LTE小区；第一 私有门限高于网络侧配置的重选至低优先级小区的服务小区门限，LTE小区包括锚点LTE小区和/或普通LTE小区；若搜索到目标小区，则通过小区重选流程从SA小区重选至目标小区；目标小区为LTE小区中的一个小区，且目标小区的信号质量高于第一阈值。
第二方面提供的通信方法，可以应用于空闲态终端设备从SA小区重选到锚点LTE小区/普通LTE小区的场景。终端设备可以设置私有门限1，私有门限1大于网络侧配置的重选至低优先级小区的服务小区门限。终端设备可以将SA小区的信号质量与私有门限1进行比较，当SA小区的信号质量一般或较差时就可以重选到LTE小区，节约了终端设备功耗、降低了终端设备发热量、延长了续航时间。
一种可能的实现方式中，搜索到目标小区，包括：获取锚点LTE小区信息；根据锚点LTE小区信息进行锚点LTE小区的搜索；若存在锚点LTE小区的信号质量高于第一阈值，则确定搜索到目标小区；目标小区为锚点LTE小区。
在该实现方式中，先判断锚点LTE小区是否高于第一阈值。如果存在锚点LTE小区高于第一阈值，则从SA小区重选至锚点LTE小区，实现了终端设备从SA小区优先重选至锚点LTE小区的自主选择，终端设备采用CONFIG D方案显示信号图标时，信号图标一直为5G，提升了用户体验。
一种可能的实现方式中，还包括：若没有锚点LTE小区的信号质量高于第一阈值，则进行普通LTE小区的搜索；若存在普通LTE小区的信号质量高于第一阈值，则确定搜索到目标小区；目标小区为普通LTE小区。
在该实现方式中，先判断锚点LTE小区是否高于第一阈值，如果没有锚点LTE小区高于第一阈值，再判断普通LTE小区是否高于第一阈值。如果存在普通LTE小区高于第一阈值，则从SA小区重选至普通LTE小区，降低终端设备的功耗。
一种可能的实现方式中，第一私有门限包括私有门限1a和私有门限1b，私有门限1a>私有门限1b；确定搜索到目标小区之前，还包括：确定SA小区的信号质量低于私有门限1a且高于私有门限1b。
在该实现方式中，设置有两个第一私有门限。SA小区的信号质量低于私有门限1a且高于私有门限1b时，如果存在锚点LTE小区高于第一阈值，终端设备可以从SA小区重选到锚点LTE小区，如果不存在锚点LTE小区高于第一阈值，终端设备继续驻留在SA小区，确保了信号图标一直显示为5G，提升了用户体验。并且，终端设备驻留在SA小区，有业务需求时可以尽快的接入SA小区。
一种可能的实现方式中，第一私有门限包括私有门限1a和私有门限1b，私有门限1a>私有门限1b；确定搜索到目标小区之前，还包括：确定SA小区的信号质量低于私有门限1b。
在该实现方式中，设置有两个第一私有门限。SA小区的信号质量低于私有门限1b时，如果存在锚点LTE小区高于第一阈值，终端设备可以从SA小区重选到锚点LTE小区，确保了业务速率和信号图标一直显示为5G，提升了用户体验。如果不存在锚点LTE小区高于第一阈值，但是存在普通LTE小区高于第一阈值，终端设备可以从SA小区重选到普通LTE小区，确保降低终端设备的功耗。
一种可能的实现方式中，获取锚点LTE小区信息，包括：将通信装置的位置信息发送给云服务器，接收云服务器发送的锚点LTE小区信息；和/或，获取锚点LTE小区信息，锚点LTE小区信息包括通信装置曾经驻留的锚点LTE小区的信息；和/或，接收LTE小区的系统消息，系统消 息中包括指示LTE小区是否为锚点LTE小区的信元，根据信元获取锚点LTE小区信息。
一种可能的实现方式中，第一阈值包括下列中的任意一项：低优先级重选的邻区门限或第二私有门限，低优先级重选的邻区门限为网络侧配置的，第二私有门限为通信装置设置的。
在该实现方式中，第一阈值有多种选择，提升了终端设备确定目标小区的门限设置的灵活度。
一种可能的实现方式中，第二私有门限可以包括私有门限2a和私有门限2b，私有门限2a<私有门限2b。私有门限2a针对锚点LTE小区，私有门限2b针对普通LTE小区。如果终端设备确定存在锚点LTE小区的信号质量大于私有门限2a，则从SA小区重选至锚点LTE小区。如果终端设备确定没有锚点LTE小区的信号质量大于私有门限2a，但存在普通LTE小区的信号质量大于私有门限2b，则从SA小区重选至普通LTE小区。通过设置私有门限2a<私有门限2b，降低了终端设备重选到锚点LTE小区的门限值，使得终端设备更容易重选到锚点LTE小区，同时降低了终端设备功耗，确保终端设备显示5G信号图标。
第三方面，提供了一种小区切换方法，应用于通信装置，通信装置驻留在LTE小区且处于连接态，LTE小区为锚点LTE小区或普通LTE小区，方法包括：接收B1事件或B2事件的测量配置信息，B1事件或B2事件的测量配置信息包括LTE小区的NR邻区的信息；对NR邻区进行信号测量，发送第一测量报告；其中，第一测量报告中的NR小区的信号质量高于第三私有门限(本申请实施例中的私有门限3)，第三私有门限为通信装置设置的，第三私有门限高于B1事件异系统邻区门限或B2事件异系统邻区门限；和目标NR小区建立连接，目标NR小区为NR小区中的一个小区。
第三方面提供的通信方法，可以应用于连接态终端设备从锚点LTE小区/普通LTE小区切换至SA小区或建立ENDC双连接来连接5G小区的场景。终端设备可以设置私有门限3，私有门限3大于网络侧配置的B1事件异系统邻区门限。终端设备可以将NR小区的信号质量与私有门限3进行比较。通过设置私有门限3，抬升了终端设备从锚点LTE小区/普通LTE小区切换至SA小区或建立ENDC双连接来连接5G小区的条件，当NR小区的信号质量非常好时才可以切换到NR小区，节约了终端设备功耗、降低了终端设备发热量、延长了续航时间。同时，也提升了业务速率。
一种可能的实现方式中，LTE小区为普通LTE小区，和目标NR小区建立连接，包括：通过小区切换流程从普通LTE小区切换至目标NR小区，目标NR小区为独立组网SA小区。
一种可能的实现方式中，LTE小区为锚点LTE小区，和目标NR小区建立连接，包括：通过小区切换流程从锚点LTE小区切换至目标NR小区，目标NR小区为SA小区；或者，建立与目标NR小区的4G-5G无线接入的双连接ENDC双连接，目标NR小区为与锚点LTE小区连接的NR小区。
第四方面，提供了一种小区切换方法，应用于通信装置，通信装置驻留在LTE小区且处于空闲态，LTE小区为锚点LTE小区或普通LTE小区，方法包括：搜索SA小区；若搜索到目标SA小区，则通过小区重选流程从LTE小区重选至目标SA小区；其中，目标SA小区的信号质量高于第三私有门限，第三私有门限为通信装置设置的，且高于网络侧配置的高优先级重选的邻区门限。
第四方面提供的通信方法，可以应用于空闲态终端设备从锚点LTE小区/普通LTE小区重选至SA小区的场景。终端设备可以设置私有门限3，私有门限3大于网络侧配置的高优先级重选的邻区门限。终端设备可以将SA小区的信号质量与私有门限3进行比较。通过设置私有门限3，抬 升了终端设备从锚点LTE小区/普通LTE小区重选至SA小区时异系统条件，当SA小区的信号质量非常好时才可以重选至SA小区，节约了终端设备功耗、降低了终端设备发热量、延长了续航时间。同时，也提升了业务速率。
一种可能的实现方式中，搜索独立组网SA小区，包括：获取LTE小区的SA邻区；根据SA邻区进行SA小区的搜索。
一种可能的实现方式中，搜索独立组网SA小区，包括：获取SA小区的频点，SA小区的频点包括通信装置曾经驻留的SA小区的频点；根据SA小区的频点进行SA小区的搜索。
第五方面，提供了一种小区切换方法，应用于通信装置，通信装置驻留在普通LTE小区，方法包括：在满足从LTE小区快速切换到NR小区的预设条件时，若通信装置处于连接态，则执行L2NR重建立流程从普通LTE小区切换至目标NR小区；若通信装置处于空闲态，则搜索NR小区，若搜索到目标NR小区，则重选至目标NR小区；其中，目标NR小区的信号质量高于第四私有门限(本申请实施例中的私有门限4)，第四私有门限为通信装置设置的。
第五方面提供的通信方法，可以应用于驻留在普通LTE小区的终端设备快速切换至NR小区的场景。终端设备为连接态时，通过L2NR重建立流程，主动快速的发起从普通LTE小区切换到NR小区，缩短了切换时延。终端设备为空闲态时，可以自主进行NR小区搜索，快速接入NR小区，缩短了切换时延。终端设备可以设置私有门限4，私有门限4小于私有门限3。终端设备确定目标NR小区时，可以将NR小区的信号质量与私有门限4进行比较，当NR小区的信号质量高于私有门限4时，终端设备可以切换。通过设置私有门限4，在终端设备从普通LTE小区快速切换到NR小区的基础上，满足了业务速率需求。
一种可能的实现方式中，预设条件包括下列中的至少一项：前台运行白名单应用程序；待上传数据或待下载数据的数据量大于预设数值。
第六方面，提供一种装置，包括：用于执行以上任一方面中各个步骤的单元或手段(means)。
第七方面，提供一种通信装置，通信装置包括处理器，处理器用于与存储器耦合，并读取存储器中的指令并根据指令使得通信装置执行以上任一方面提供的方法。
一种可能的实现方式中，通信装置为终端或芯片。
第八方面，提供一种程序，该程序在被处理器执行时用于执行以上任一方面提供的方法。
第九方面，提供一种计算机可读存储介质，计算机可读存储介质中存储有指令，当指令在计算机或处理器上运行时，实现以上任一方面提供的方法。
第十方面，提供一种程序产品，所述程序产品包括计算机程序，所述计算机程序存储在可读存储介质中，设备的至少一个处理器可以从所述可读存储介质读取所述计算机程序，所述至少一个处理器执行所述计算机程序使得该设备实施以上任一方面提供的方法。
第十一方面，提供一种装置，包括通信模块和处理模块。通信模块可以接收其他装置发送的数据或者从其他装置接收数据，例如，接收系统消息、接收A2事件的测量配置信息、B1事件的测量配置信息、B2事件的测量配置信息、发送A2事件的测量报告、发送B1事件的测量报告或发送B2事件的测量报告。处理模块可以用于检测当前服务小区的信号质量、检测异系统小区的信号质量、搜索小区、确定切换的目标小区、确定重选的目标小区，或执行小区重选流程、小区切换流程、建立ENDC双连接等，实现以上任一方面提供的方法。
附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例或现有技术描述中所需要使 用的附图作简单地介绍。
图1为本申请实施例适用的移动通信系统的组网方式示意图；
图2为5G NSA组网的一种示意图；
图3为5G NSA组网中数据分流的一种示意图；
图4为5G NSA组网中数据分流的另一种示意图；
图5为现有的终端设备从SA小区切换到NSA小区/普通LTE小区的场景示意图；
图6为现有的终端设备处于不同状态时从SA小区切换到NSA小区/普通LTE小区的切换结果示意图；
图7为现有的终端设备处于连接态时从SA小区切换到NSA小区/普通LTE小区的消息交互图；
图8为现有的终端设备处于空闲态时从SA小区切换到NSA小区/普通LTE小区的消息交互图；
图9为本申请实施例提供的终端设备从SA小区切换到NSA小区/普通LTE小区的场景示意图；
图10为本申请实施例提供的终端设备处于不同状态时从SA小区切换到NSA小区/普通LTE小区的切换结果示意图；
图11为本申请实施例提供的终端设备处于连接态时从SA小区切换到NSA小区/普通LTE小区的消息交互图；
图12为本申请实施例提供的终端设备处于空闲态时从SA小区切换到NSA小区/普通LTE小区的消息交互图；
图13为本申请实施例提供的终端设备处于连接态时从SA小区切换到NSA小区/普通LTE小区的一种流程图；
图14为本申请实施例提供的终端设备处于连接态时从SA小区切换到NSA小区/普通LTE小区的另一种流程图；
图15为本申请实施例提供的终端设备处于连接态时从SA小区切换到NSA小区/普通LTE小区的又一种流程图；
图16为本申请实施例提供的终端设备处于空闲态时从SA小区切换到NSA小区/普通LTE小区的一种流程图；
图17为本申请实施例提供的终端设备处于空闲态时从SA小区切换到NSA小区/普通LTE小区的另一种流程图；
图18为本申请实施例提供的终端设备处于空闲态时从SA小区切换到NSA小区/普通LTE小区的又一种流程图；
图19为现有的终端设备从NSA小区/普通LTE小区切换到NR小区的场景示意图；
图20为现有的终端设备处于不同状态时从NSA小区/普通LTE小区切换到NR小区的切换结果示意图；
图21为现有的终端设备处于连接态时从NSA小区/普通LTE小区切换到NR小区的消息交互图；
图22为现有的终端设备处于空闲态时从NSA小区/普通LTE小区切换到SA小区的消息交互图；
图23为本申请实施例提供的终端设备从NSA小区/普通LTE小区切换到NR小区的场景示意图；
图24为本申请实施例提供的终端设备处于连接态时从NSA小区/普通LTE小区切换到NR小区的消息交互图；
图25为本申请实施例提供的终端设备处于空闲态时从NSA小区/普通LTE小区切换到SA小区的消息交互图；
图26为本申请实施例提供的终端设备从普通LTE小区切换到NR小区的流程图；
图27为本申请实施例提供的终端设备的一种结构示意图；
图28为本申请实施例提供的终端设备的另一种结构示意图。
具体实施方式
下面结合附图描述本申请实施例。
首先，对本申请实施例适用的移动通信系统的组网方式进行说明。
5G是最新一代的移动通信技术，相比于早期的4G、3G、2G等移动通信技术，5G能够提供更高的数据速率、更低的延迟、万物互联的全连接、更节省能源、更低的成本、更高的系统容量和大规模设备接入。5G新空口(new radio，NR)是一种新的无线接入技术(radio access technology，RAT)，由第三代合作伙伴计划(3rd generation partnership project，3GPP)开发，用于5G移动通信网络，是5G网络空中接口的全球通用标准。
现有5G标准定义了多种组网方式，包括独立组网(standalone，SA)和非独立组网(non-standalone，NSA)方式。可选的，5G NSA和5G SA的核心网均可以是4G核心网(evolved packet core，EPC)或者5G核心网(5G core network，5GC)。5G NSA组网也可以称为4G-5G无线接入的双连接(EUTRN-NR dual connectivity，EN-DC)组网，在5G系统建设初期，5G NSA组网方式应用广泛。
示例性的，图1为本申请实施例适用的移动通信系统的组网方式示意图。如图1所示，在4G系统与5G系统共存的场景中，组网方式可以包括：长期演进(Long Term Evolution，LTE)组网(或称为LTE独立组网)、5G NSA组网和5G SA组网。其中，4G移动通信网络中的基站可以称为4G基站(evolved nodeB，eNB)，5G移动通信网络中的基站可以称为5G基站(5G nodeB，gNB)。eNB和gNB上可以配置小区，每个小区具有一定的信号覆盖范围。如图1中的(a)所示，在LTE组网方式中，LTE小区由eNB提供，eNB接入EPC。如图1中的(b)所示，在5G NSA组网方式中，LTE小区由eNB提供，NR小区由gNB提供，gNB可以作为eNB的从站，eNB和gNB均接入EPC或者5GC。如图1中的(c)所示，可以为5G SA的目标组网方式，NR小区由gNB提供，gNB直接接入5GC。需要说明的是，图1仅示出了部分组网方式，并不对4G组网方式和5G组网方式形成限定。例如，5G NSA组网方式可以包括Option 3/3a/3x、Option 4/4a、Option 7/7a/7x等多种可能的方式。
下面结合图2～图4，对5G NSA组网方式进行详细说明。
1、用户设备(user equipment，UE)与基站之间的连接
如图2所示，UE可以同时连接到4G LTE的基站eNB和5G NR的基站gNB。其中，eNB为主节点，在EN-DC中也称为主站、主4G基站(master eNB，MeNB)或EN-DC中的主节点(master node，MN)。在EN-DC组网方式下，5G NR的基站可以称为En-gNB。En-gNB为辅节点，在EN-DC中也称为从站、辅助5G基站(secondary gNB，SgNB)或EN-DC中的辅节点(secondary node， SN)。
2、基站之间的连接
eNB与En-gNB之间通过X2接口连接。
3、基站与核心网之间的连接
在图2中，eNB和En-gNB均连接到4G核心网。4G核心网可以包括移动管理实体(mobility management entity，MME)和服务网关(serving gateway，SGW)。eNB通过S1-C接口连接到MME，通过S1-U接口连接到SGW。En-gNB与MME之间没有直接连接，所有的控制面信令都经由eNB转发。En-gNB是否通过S1-U接口与SGW连接取决于采用何种EN-DC的协议栈架构进行数据传输。
4、承载类型
在EN-DC组网方式下，UE同时与eNB和En-gNB保持双连接，同时利用两个基站的无线资源进行数据传输。其中，将配置给UE且分别属于eNB和En-gNB的小区分为两个小区组(cell group)，属于eNB的小区称为EN-DC中主节点下的小区组(master cell group，MCG)，属于En-gNB的小区称为EN-DC中辅节点下的小区组(secondary cell group，SCG)。在每个小区组中，一个无线承载的无线链路控制(radio link control，RLC)配置和逻辑信道的配置称为RLC承载。根据数据在主站和辅站上的分布情况，可以分为以下4种DC承载类型：
(1)MCG承载：数据只在主站上，RLC承载只配置在MCG。
(2)SCG承载：数据只在辅站上，RLC承载只配置在SCG。
(3)MCG Split承载：数据在主站分流，RLC承载同时配置在MCG和SCG。
(4)SCG Split承载：数据在辅站分流，RLC承载同时配置在MCG和SCG。
示例性的，图3为5G NSA组网中数据分流的一种示意图，示出了MCG承载、SCG承载和MCG Split承载。如图3所示，eNB的协议栈可以包括媒体介入控制(medium access control，MAC)、RLC层和分组数据汇聚(packet data convergence protocol，PDCP)层，gNB的协议栈可以包括NR MAC层、NR RLC层和NR PDCP层。以双连接下的下行数据传输为例，对承载类型进行说明。在MCG Split承载模式中，数据流在PDCP层上汇聚，随后将数据流通过多个基站同时传送给UE。在这种情况下，一个PDCP实体可以关联两个RLC实体，可以理解为PDCP层将数据流通过RLC1、RLC2链路传输至RLC层，具体地，RLC1链路可以理解为LTE链路，RLC2链路可以理解为NR链路，每个RLC实体分别对应LTE空口和NR空口。在这种场景下，PDCP的数据流会根据获取的授权，将PDCP报文分别在LTE和NR的空口上进行发送。在MCG承载模式中，PDCP层关联一个RLC实体，PDCP层的数据直接传输至RLC层。在SCG承载模式中，数据在NR PDCP层传输，即数据在辅站上传输，此时关联一个NR RLC实体，NR PDCP层的数据直接传输至NR RLC层。在一些实施例中，每个RLC实体可以至少对应一条承载链路，在一些实施例中，RLC层也可以有多个RLC实体。
示例性的，图4为5G NSA组网中数据分流的另一种示意图，示出了MCG承载、SCG承载和SCGSplit承载。其中，MCG承载和SCG承载可以参见图3中的描述，此处不再赘述。如图4所示，在SCGSplit承载模式中，数据在NR PDCP层汇聚，一个NR PDCP实体可以关联两个RLC实体，对应NR RLC层与RLC层，此时，数据在辅站分流。
需要说明，本申请实施例对UE的名称和类型不做限定。例如，UE也可以称为通信装置、通信设备、终端设备、移动台(mobile station，MS)、终端或移动终端(mobile terminal，MT)等， 可以是一种向用户提供语音/数据连通性的设备，例如，具有无线连接功能的手持式设备或车载设备等。目前，一些终端设备的举例为：手机(mobile phone)、平板电脑、笔记本电脑、掌上电脑、移动互联网设备(mobile internet device，MID)、可穿戴设备、虚拟现实(virtual reality，VR)设备、增强现实(augmented reality，AR)设备、工业控制(industrial control)中的无线终端、无人驾驶(self-driving)中的无线终端、远程手术(remote medical surgery)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、或智慧家庭(smart home)中的无线终端等。
下面，对本申请实施例涉及的小区类型进行说明。
1、SA小区：指5G SA组网时的5G小区。例如，如图1中的(c)所示，5G基站上配置的小区可以称为SA小区。
2、NSA小区/锚点LTE小区：指5G NSA组网时可以建立ENDC双连接与5G小区相连接的LTE小区。例如，如图1中的(b)所示，eNB为主站，eNB上配置的小区可以称为NSA小区或者锚点LTE小区。为了方便描述，本申请实施例中采用“NSA小区”的描述方式。
3、普通LTE小区：指4G独立组网时的LTE小区。例如，如图1中的(a)所示，4G基站上配置的小区可以称为普通LTE小区。
4、NR小区：指所有的5G小区，包括SA小区以及5G NSA组网时建立ENDC双连接后与NSA小区连接的5G小区。例如，在图1中的(b)中，UE建立双连接后，En-gNB上配置的小区为NR小区，但不是SA小区。
5、LTE小区：指所有的4G小区，包括普通LTE小区和NSA小区/锚点LTE小区。
下面，对本申请实施例涉及的测量事件以及门限值进行说明。
1、A2事件和A2事件门限
A2事件是针对本系统的测量事件，指当前服务小区的信号质量低于A2事件门限。A2事件门限是基站侧(或网络侧)配置的。当基站配置A2事件测量时，基站向UE发送测量配置信息，其中携带A2事件门限。相应的，UE接收该测量配置信息，对当前服务小区进行信号测量。如果UE检测到当前服务小区的信号质量低于A2事件门限，则上报A2事件。可选的，A2事件可以用于触发小区切换。可选的，A2事件可以用于开启小区间测量，例如，异系统B1事件测量。
需要说明，在本申请实施例提供的小区切换方法中，UE在上报A2事件时，是将当前服务小区的信号质量与UE设置的私有门限1进行比较。
2、B1事件和B1事件门限
B1事件是针对异系统的测量事件，指异系统邻区的信号质量高于B1事件异系统邻区门限。B1事件及门限是基站侧(或网络侧)配置的。当基站配置B1事件测量时，基站向UE发送测量配置信息，其中携带B1事件异系统邻区门限和异系统邻区频点。相应的，UE接收该测量配置信息，根据频点进行异系统邻区的信号测量。如果UE检测到异系统邻区的信号质量高于B1事件异系统邻区门限，则上报B1事件。可选的，B1事件可以用于触发系统间切换。
需要说明，在本申请实施例提供的小区切换方法中，UE在上报B1事件时，是将异系统邻区的信号质量与UE设置的私有门限2或私有门限3进行比较。
3、B2事件和B2事件门限
B2事件也是针对异系统的测量事件，指服务小区的信号质量低于B2事件服务小区门限且同时异系统邻区的信号质量高于B2事件异系统邻区门限。B2事件及门限是基站侧(或网络侧)配置的。当基站配置B2事件测量时，基站向UE发送测量配置信息，其中携带B2事件门限和频点。相应的，UE接收该测量配置信息，根据频点进行异系统邻区的信号测量。如果UE检测到服务小区的信号质量低于B2事件服务小区门限且同时异系统邻区的信号质量高于B2事件异系统邻区门限，则上报B2事件。可选的，B2事件可以用于触发系统间切换。
需要说明，在本申请实施例提供的小区切换方法中，UE在上报B2事件时，在UE从SA小区切换到NSA小区/普通LTE小区的场景中，将当前服务小区的信号质量与UE设置的私有门限1进行比较，将异系统邻区的信号质量与UE设置的私有门限2进行比较。在UE从NSA小区/普通LTE小区切换至SA小区或建立ENDC双连接来连接5G小区的场景中，将当前服务小区的信号质量与网络侧配置的B2事件服务小区门限进行比较，将异系统邻区的信号质量与UE设置的私有门限3进行比较。
需要说明，B1事件和B2事件都是异系统测量事件，在本申请实施例提供的小区切换方法中，以B1事件作为示例进行说明。本申请实施例中的B1事件也可以为B2事件。
4、重选至低优先级小区的服务小区门限1和低优先级重选邻区门限2
适用于空闲态UE从SA小区重选至NSA小区/普通LTE小区的场景，均由基站侧配置，可以携带在系统消息中。通常，UE从SA小区重选至LTE小区网络配置为低优先级重选，相反的，从LTE小区重选至SA小区网络配置为高优先级重选。
5、高优先级重选邻区门限3
适用于空闲态UE从NSA小区/普通LTE小区重选至SA小区的场景，由基站侧配置，可以携带在系统消息中。
6、私有门限1和私有门限2
私有门限1和私有门限2是UE设置的，适用于UE从SA小区切换到NSA小区/普通LTE小区的场景。私有门限1针对SA小区，用于UE判断SA小区的信号质量是否低于私有门限1。私有门限2针对NSA小区/普通LTE小区，用于UE判断NSA小区/普通LTE小区的信号质量是否高于私有门限2。
7、私有门限3和私有门限4
私有门限3和私有门限4是UE设置的，适用于UE从NSA小区/普通LTE小区切换到NR小区的场景。私有门限3和私有门限4均针对NR小区，用于UE判断NR小区的信号质量是否高于私有门限3或私有门限4。其中，私有门限3的取值高于私有门限4。私有门限3可以应用于UE从NSA小区/普通LTE小区切换到信号质量非常好的SA小区或与非独立组网的5G小区建立ENDC双连接的场景中。私有门限4可以应用于UE从NSA小区/普通LTE小区快速切换到SA小区或建立ENDC双连接的场景中。
需要说明，本申请实施例对上述各个参数的名称不做限定。
本申请实施例提供的小区切换方法，用于实现UE在SA小区与NSA小区/普通LTE小区之间切换。应用场景可以包括：UE从SA小区切换到NSA小区/普通LTE小区，以及，UE从NSA小区/普通LTE小区切换到SA小区或建立ENDC双连接。由于5G可以提供更高的数据速率和更低的延迟，目前，一些配置策略为让UE优先驻留在SA小区。但是，在5G系统建设初期，网络 参数优化存在缺陷，而且，5G采用高频段和大带宽，终端驻留SA小区时的功耗较高，导致UE的续航能力变差，发热较高。通过本申请实施例提供的小区切换方法，处于空闲态或者连接态的终端设备可以实现如下效果：(1)当UE不需要高速下载/上传数据时，且SA小区的信号质量一般时，UE可以驻留在NSA小区/普通LTE小区，节省UE功耗。(2)当SA小区的信号质量非常好时，UE功耗较小，UE可以驻留在SA小区。这样，当UE需要高速下载/上传数据时，UE通过接入SA小区或者建立ENDC双连接，快速连接5G。
可选的，处于空闲态或者连接态的终端设备还可以实现如下效果：在NSA/SA混合组网区域，UE在SA小区与NSA小区之间动态切换，UE上显示的信号图标保持为5G，用户对于UE驻留网络并不感知。
下面对终端设备如何显示信号图标进行简单说明。
5G NSA组网涉及到4G和5G两种网络制式，因而NSA组网方式中的终端设备涉及到4G网络图标和5G网络图标的切换显示。参见表1，全球移动通信系统协会GSMA向3GPP提交了CONFIG A/B/C/D四种终端显示5G网络图标的方案。
表1
Figure PCTCN2021113609-appb-000001
可选的，本申请实施例中的终端设备可以采用CONFIG D方案。
在CONFIG D方案中，终端设备驻留在NSA小区时即显示5G网络图标。存在如下场景：在NSA组网中，用户使用终端设备处理业务时，终端设备显示5G网络图标但实际上并无NR连接。在该场景中，终端设备可以通过建立ENDC双连接处理业务，终端设备显示5G网络图标，避免用户认为终端设备一直驻留4G网络，提升了用户感受。
下面通过具体的实施例对本申请的技术方案进行详细说明。下面的实施例可以相互结合，对 于相同或相似的概念或过程可能在某些实施例中不再赘述。
本申请实施例可以相互结合，对于相同或相似的概念或过程可能在某些实施例中不再赘述。本申请实施例中的术语“第一”、“第二”、“第三”、“第四”等(如果存在)是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。
需要说明，在本申请实施例中，“/”表示或者。例如，从SA小区切换到NSA小区/普通LTE小区，可以理解为：从SA小区切换到NSA小区，或者，从SA小区切换到普通LTE小区。
需要说明，在本申请实施例中，“切换”具有广义含义和狭义含义。广义含义是指UE动态的在不同小区驻留，从一个小区变更为另一个小区。例如，UE从SA小区切换到NSA小区/普通LTE小区，可以包括：空闲态UE从SA小区重选至NSA小区/普通LTE小区、连接态UE从SA小区切换至NSA小区/普通LTE小区。狭义含义是指UE处于连接态时通过上报测量报告触发的小区切换流程。如果UE处于连接态，广义含义的“切换”可以通过狭义含义的“小区切换流程”实现，广义含义的“切换”还可以通过小区重定向流程、建立ENDC双连接流程等实现。如果UE处于空闲态，广义含义的“切换”可以通过小区重选流程等实现。其中，小区切换流程、小区重选流程、小区重定向流程、建立ENDC双连接流程等均为移动通信网络中的基本流程，可以参见通信协议。
需要说明，在本申请实施例中，UE驻留的小区，可以为空闲态UE驻留的小区，或者，连接态UE接入的小区。
下面结合图5～图8，对现有的终端设备从SA小区切换到NSA小区/普通LTE小区的过程进行说明。
示例性的，图5为现有的终端设备从SA小区切换到NSA小区/普通LTE小区的场景示意图。如图5所示，UE1和UE2当前驻留在SA小区。UE1和UE2可以为空闲态，也可以为连接态。SA小区的信号覆盖范围为区域11，NSA小区/普通LTE小区的信号覆盖范围为区域21，区域11和区域21存在重叠区域。需要说明，图5仅是示例，对SA小区、NSA小区和普通LTE小区的信号覆盖范围并不形成限定。例如，在另一种实现方式中，eNB和gNB可以为共址基站，区域11和区域21的中心区域可以重合。
可选的，在一个场景中，UE为连接态，当前接入SA小区。结合图5、图6中的(a)和图7，对现有的终端设备处于连接态时从SA小区切换到NSA小区/普通LTE小区的过程进行说明。如图7所示，可以包括：
S701、gNB向UE发送关于A2事件的测量配置信息。
相应的，UE接收gNB发送的测量配置信息。测量配置信息可以包括A2事件门限。本实施例对A2事件门限的具体取值不做限定。可选的，测量配置信息可以通过RRC信令传输。
S702、UE对SA小区进行信号测量。若SA小区的信号质量低于A2事件门限，则上报A2事件的测量报告。相应的，gNB接收UE发送的测量报告。
举例说明。参见图5。假设，A2事件门限为-108dBm。UE2检测到SA小区的信号质量为-109dBm，低于-108dBm，则上报A2事件的测量报告。UE1检测到SA小区的信号质量为-107dBm，高于-108dBm，则不上报A2事件。
S703、gNB向UE发送关于B1事件的测量配置信息。
相应的，UE接收gNB发送的测量配置信息。测量配置信息可以包括B1事件异系统邻区门限。 本实施例对B1事件异系统邻区门限的具体取值不做限定。可选的，测量配置信息还可以包括异系统小区(NSA小区和/或普通LTE小区)的频点。
具体的，UE上报A2事件后，等待网络侧配置异系统B1事件的测量。UE接收到关于B1事件的测量配置信息后，对异系统邻区进行信号测量。
S704、若异系统邻区的信号质量高于B1事件异系统邻区门限，则上报B1事件的测量报告。相应的，gNB接收UE发送的测量报告。
S705、gNB根据UE上报的B1事件确定目标小区，UE执行小区切换流程。
其中，小区切换流程可以为现有的从SA小区切换到NSA小区/普通LTE小区的流程。
可见，在连接态UE从SA小区切换到NSA小区/普通LTE小区的场景中，SA小区的信号质量需要首先低于网络侧配置的A2事件门限，UE上报A2事件后触发网络侧配置异系统B1事件测量。目前，由于网络的设置策略，A2事件门限通常取值较低，导致UE不容易从SA小区切换到NSA小区/普通LTE小区，更容易驻留在SA小区。例如S702中的举例，图5中的UE1都不会上报A2事件，无法切换。此时，驻留在SA小区的UE的功耗已经非常高，手机发热严重，电池续航时间缩短。而且，在S704中，UE上报B1事件时将满足B1事件的异系统邻区都进行上报，由网络侧确定目标小区。目标小区可能是NSA小区，也可能是普通LTE小区，UE无法控制，切换结果参见图6中的(a)图。如果目标小区是普通LTE小区，UE显示的信号图标将从5G变更为4G，影响用户体验。
可选的，在另一个场景中，UE为空闲态，当前驻留在SA小区。结合图5、图6中的(b)和图8，对现有的终端设备处于空闲态时，从SA小区切换到NSA小区/普通LTE小区的过程进行说明。如图8所示，可以包括：
S801、UE当前驻留在SA小区。
本步骤可以为现有的小区选择流程。
S802、UE判断当前驻留的SA小区的信号质量是否小于网络侧配置的重选至低优先级小区的服务小区门限1。
其中，从SA小区重选至LTE小区通常认为是低优先级重选，相反的，从LTE小区重选至SA小区认为是高优先级重选。本实施例对所述门限1的具体取值不做限定。如果判断当前驻留的SA小区的信号质量小于网络侧配置的重选至低优先级小区的服务小区门限1，则执行S803。
S803、UE判断是否存在小区信号质量大于网络侧配置的低优先级重选邻区门限2的NSA小区/普通LTE小区。
其中，本实施例对低优先级重选邻区门限2的具体取值不做限定。如果判断存在小区信号质量大于网络侧配置的低优先级重选邻区门限2的NSA小区/普通LTE小区，则执行S804。
S804、UE进行小区重选流程，重选至NSA小区/普通LTE小区。
本步骤可以为现有的从SA小区重选至NSA小区/普通LTE小区的小区重选流程。
可见，对于空闲态UE从SA小区切换到NSA小区/普通LTE小区的场景，原理与UE为连接态时相似，均涉及网络侧配置的本系统信号门限和异系统信号门限。UE为连接态时，涉及的参数包括A2事件门限和B1事件异系统邻区门限。UE为空闲态时，涉及的参数包括重选至低优先级小区的服务小区门限1和低优先级重选邻区门限2。UE为空闲态时也存在如下问题：UE更容易驻留在SA小区，导致功耗增大、发热严重、续航时间缩短。而且，UE无法控制重选的小区是NSA小区还是普通LTE小区，重选结果参见图6中的(b)图。如果重选的小区是普通LTE小区， UE显示的信号图标会从5G变更为4G，影响用户体验。
本申请实施例提供一种小区切换方法，适用于终端设备从SA小区切换到NSA小区/普通LTE小区的场景。在本实施例中，UE可以设置私有门限1，私有门限1大于网络侧配置的A2事件门限或者重选至低优先级小区的服务小区门限1。UE可以将SA小区的信号质量与私有门限1进行比较，当SA小区的信号质量低于私有门限1时，终端设备可以从SA小区切换到NSA小区/普通LTE小区。通过设置私有门限1，放宽了终端设备从SA小区切换到LTE小区时本系统的切换判断条件，当SA小区的信号质量一般或较差时就可以切换到LTE小区，节约了UE功耗、降低了UE发热量、延长了续航时间。
需要说明，本实施例对私有门限1的具体取值不做限定。
下面结合图9～图18进行详细说明。其中，本申请各实施例中相同的步骤采用相同编号，相同或相似的概念或过程可能在某些实施例中不再赘述。
示例性的，图9为本申请实施例提供的终端设备从SA小区切换到NSA小区/普通LTE小区的场景示意图。图9与图5相比，区别在于：在图5中，终端设备可以获取网络侧配置的A2事件门限或重选至低优先级小区的服务小区门限1，并将SA小区的信号质量与其进行比较，作为本系统的切换判断条件。在图9中，终端设备可以获取网络侧配置的A2事件门限或重选至低优先级小区的服务小区门限1，但是将SA小区的信号质量与UE侧设置的私有门限1进行比较，作为本系统的切换判断条件。在图9中，UE1和UE2检测到的SA小区的信号质量均低于私有门限1，均可以从SA小区切换到NSA小区/普通LTE小区。
可选的，在一个场景中，UE为连接态，当前接入SA小区。如图11所示，本实施例提供的小区切换方法，可以包括：
S701、gNB向UE发送关于A2事件的测量配置信息。
S1102、UE对SA小区进行信号测量。若SA小区的信号质量低于私有门限1，则上报A2事件的测量报告。相应的，gNB接收UE发送的测量报告。
举例说明。参见图9。假设，A2事件门限为-108dBm，私有门限1为-106dBm。UE1检测到SA小区的信号质量为-107dBm，虽然高于-108dBm，但是低于-106dBm，UE1就可以上报A2事件。
S703、gNB向UE发送关于B1事件的测量配置信息。
可选的，也可以采用B2事件，那么gNB将向UE发送关于B2事件的测量配置信息。
S1104、UE对异系统邻区进行信号测量。若异系统邻区的信号质量高于阈值1，则上报B1事件的测量报告。相应的，gNB接收UE发送的测量报告。
可选的，也可以采用B2事件。那么，若SA小区的信号质量低于私有门限1，异系统邻区的信号质量高于阈值1，则上报B2事件的测量报告。
可选的，在一种实现方式中，阈值1可以为B1事件异系统邻区门限。此时，S1104与S704相同，异系统的切换判断条件与现有实现方式相同。相似的，若采用B2事件，阈值1可以为B2事件异系统邻区门限。
可选的，在另一种实现方式中，阈值1可以为UE设置的私有门限2，本实施例对私有门限2的具体取值不做限定。通过设置私有门限2，UE可以将异系统邻区的信号质量与私有门限2进行比较，当高于私有门限2时上报B1事件，提升了UE上报B1事件的门限设置的灵活度。
S705、gNB根据UE上报的B1事件确定目标小区，UE执行小区切换流程。
可选的，在另一个场景中，UE为空闲态，当前驻留在SA小区。如图12所示，本实施例提供的小区切换方法，可以包括：
S801、UE当前驻留在SA小区。
S1202、UE判断当前驻留的SA小区的信号质量是否小于UE设置的私有门限1。
如果SA小区的信号质量小于私有门限1，则执行S1203。
S1203、UE判断是否存在小区信号质量大于阈值1的NSA小区/普通LTE小区。
UE可以根据网络邻区配置进行LTE测量，或者，自主进行LTE小区搜索。可选的，UE可以根据历史频点自主进行LTE小区搜索，历史频点可以包括UE曾经驻留过的LTE小区的频点。如果存在小区信号质量大于阈值1的NSA小区/普通LTE小区，则执行S804。
可选的，在一种实现方式中，阈值1可以为低优先级重选邻区门限2。此时，S1203与S803相同。
可选的，在另一种实现方式中，阈值1可以为UE设置的私有门限2。UE可以将LTE小区的信号质量与私有门限2进行比较，提升了UE确定目标LTE小区时门限设置的灵活度。
S804、UE进行小区重选流程，重选至NSA小区/普通LTE小区。
可选的，在图11和图12所示实施例的基础上，UE可以识别LTE小区是NSA小区还是普通LTE小区。UE进行LTE小区搜索或者LTE小区的信号测量时，可以先判断NSA小区是否满足小区切换条件。如果存在NSA小区满足小区切换条件，则从SA小区切换至NSA小区，实现了UE从SA小区优先切换至NSA小区的自主选择。UE采用CONFIG D方案显示信号图标时，信号图标一直为5G，提升了用户体验。如果没有NSA小区满足小区切换条件，在一种实现方式中，UE不进行切换，依然驻留在SA小区，确保信号图标显示为5G；在另一种实现方式中，UE可以判断普通LTE小区是否满足小区切换条件，如果存在普通LTE小区满足小区切换条件，则从SA小区切换至普通LTE小区，降低UE的功耗。小区切换结果可以参见图10，UE处于连接态或者空闲态时，都可以优先切换至NSA小区。
可选的，UE在识别LTE小区是NSA小区还是普通LTE小区时，一种实现方式可以包括：UE获取当前的位置信息，将位置信息发送给云服务器。云服务器根据所述位置信息确定预设地理范围内的第一NSA小区列表，将第一NSA小区列表发送给UE。相应的，UE接收第一NSA小区列表，并根据第一NSA小区列表识别LTE小区是否为NSA小区。其中，云服务器上存储有NSA小区列表。可选的，云服务器可以周期性更新或者事件触发更新其存储的NSA小区列表。可选的，位置信息可以包括下列中的至少一项：经纬度信息、UE当前驻留小区的小区标识。本实施例对UE获取位置信息的实现方式不做限定，例如，通过UE上安装的全球定位系统(global positioning system，GPS)组件或北斗系统定位组件进行定位。
可选的，UE在识别LTE小区是NSA小区还是普通LTE小区时，另一种实现方式可以包括：UE根据NSA小区历史信息识别LTE小区是否为NSA小区。NSA小区历史信息可以包括UE曾经驻留过的NSA小区。具体的，对于UE曾经驻留过的LTE小区，可以通过识别系统消息SIB2中的upper layer indicator或者是否建立过ENDC双连接判断该LTE小区是否为NSA小区。
可选的，若UE为空闲态，UE在识别LTE小区是NSA小区还是普通LTE小区时，又一种实现方式可以包括：UE主动搜索LTE小区，通过识别系统消息SIB2中的upper layer indicator判断该LTE小区是否为NSA小区。
可选的，私有门限1可以包括私有门限1a和私有门限1b，私有门限1a>私有门限1b，本实施例对具体取值不做限定。具体参见图15和图18。
可选的，私有门限2可以包括私有门限2a和私有门限2b，私有门限2a<私有门限2b，本实施例对具体取值不做限定。私有门限2a针对NSA小区，私有门限2b针对普通LTE小区。具体的，如果UE确定存在NSA小区的信号质量大于私有门限2a，则从SA小区切换至NSA小区。可选的，如果UE确定没有NSA小区的信号质量大于私有门限2a，但存在普通LTE小区的信号质量大于私有门限2b，则从SA小区切换至普通LTE小区。通过设置私有门限2a<私有门限2b，降低了UE切换到NSA小区的门限值，使得UE更容易切换到NSA小区，优先保障业务速率，同时降低了UE功耗，确保UE显示5G信号图标。
下面对UE处于连接态和空闲态时的实施方式分别进行详细说明。其中，图13～图15中UE处于连接态，图16～18中UE处于空闲态。
可选的，在一种实现方式中，参见图13，UE处于连接态。图13示出了图11中S1104和S705的一种实现方式，执行主体为UE。S1104包括S1301～S1302，S705可以包括S1303。在本实施方式中，连接态UE可以从SA小区切换到NSA小区。
具体的，S1301、UE判断是否存在NSA小区的信号质量高于阈值1。
如果存在NSA小区的信号质量高于阈值1，则执行S1302～S1303。如果没有NSA小区的信号质量高于阈值1，则执行S1304。
S1302、UE上报B1事件的测量报告。其中，测量报告中包括小区信号质量高于阈值1的NSA小区。
UE上报B1事件的测量报告后，由网络侧根据测量报告确定目标小区。由于测量报告中包括的是NSA小区，所以目标小区是NSA小区，实现了UE从SA小区优先切换至NSA小区的自主选择。
S1303、UE切换至NSA小区。
S1304、UE不上报B1事件的测量报告，继续驻留在SA小区。
可选的，在另一种实现方式中，参见图14，UE处于连接态。图14示出了图11中S1104和S705的一种实现方式，执行主体为UE。S1104包括S1301～S1302和S1305～S1306，S705可以包括S1303和S1307。在本实施方式中，连接态UE可以从SA小区切换到NSA小区/普通LTE小区，且优先切换到NSA小区。
S1301、UE判断是否存在NSA小区的信号质量高于阈值1。
如果存在NSA小区的信号质量高于阈值1，则执行S1302～S1303。如果没有NSA小区的信号质量高于阈值1，则执行S1305～S1307。
S1302、UE上报B1事件的测量报告。其中，测量报告中包括小区信号质量高于阈值1的NSA小区。
S1303、UE切换至NSA小区。
S1305、UE判断是否存在普通LTE小区的信号质量高于阈值1。
如果存在普通LTE小区的信号质量高于阈值1，则执行S1306～S1307。如果没有普通LTE小区的信号质量高于阈值1，则执行S1304，UE不上报B1事件的测量报告，继续驻留在SA小区。
S1306、UE上报B1事件的测量报告。其中，测量报告中包括小区信号质量高于阈值1的普通LTE小区。
S1307、UE切换至普通LTE小区。
可选的，在又一种实现方式中，参见图15，UE处于连接态。图15示出了图11中S1102、S1104和S705的一种实现方式，执行主体为UE。S1102可以包括S1308～S1309，S1104可以包括S1301b～S1302b、S1305b～S1306b和S1301a～S1302a，S705可以包括S1303b、S1307b和S1303a。其中，S1301a～S1304a可以对应参见图13中的S1301～S1304，S1301b～S1307b可以对应参见图14中的S1301～S1307。在本实施方式中，私有门限1可以包括私有门限1a和私有门限1b。SA小区的信号质量低于私有门限1a且高于私有门限1b时，UE可以从SA小区切换到NSA小区。SA小区的信号质量低于私有门限1b时，UE可以从SA小区切换到NSA小区/普通LTE小区，且优先切换到NSA小区。
可选的，在又一种实现方式中，参见图16，UE处于空闲态。图16示出了图12中S1203和S804的一种实现方式，执行主体为UE。S1203包括S1601，S804可以包括S1602。在本实施方式中，UE可以从SA小区重选到NSA小区。
具体的，S1601、UE确定SA小区的信号质量小于私有门限1时，触发UE搜索NSA小区。UE判断是否存在NSA小区的信号质量高于阈值1。
如果存在NSA小区的信号质量高于阈值1，则执行S1602。如果没有NSA小区的信号质量高于阈值1，则执行S1603。
S1602、UE从SA小区重选至NSA小区。
S1603、UE继续驻留在SA小区。
可选的，在又一种实现方式中，参见图17，UE处于空闲态。图17示出了图12中S1203和S804的一种实现方式，执行主体为UE。S1203包括S1601和S1604，S804可以包括S1602和S1605。在本实施方式中，UE可以从SA小区重选至NSA小区/普通LTE小区，且优先重选至NSA小区。
具体的，S1601、UE确定SA小区的信号质量小于私有门限1时，触发UE搜索NSA小区。UE判断是否存在NSA小区的信号质量高于阈值1。
如果存在NSA小区的信号质量高于阈值1，则执行S1602。如果没有NSA小区的信号质量高于阈值1，则执行S1604～S1605。
S1602、UE从SA小区重选至NSA小区。
S1604、UE继续搜索普通LTE小区。UE判断是否存在普通LTE小区的信号质量高于阈值1。
如果存在普通LTE小区的信号质量高于阈值1，则执行S1605。如果没有普通LTE小区的信号质量高于阈值1，则执行S1603，UE继续驻留在SA小区。
S1605、UE从SA小区重选至普通LTE小区。
可选的，在又一种实现方式中，参见图18，UE处于空闲态。图18示出了图12中S1202、S1203和S804的一种实现方式，执行主体为UE。S1202可以包括S1308～S1309，S1203可以包括S1601b、S1604b和S1601a，S804可以包括S1602b、S1605b和S1602a。其中，S1601a～S1603a可以对应参见图16中的S1601～S1603，S1601b～S1605b可以对应参见图17中的S1601～S1605。在本实施方式中，私有门限1可以包括私有门限1a和私有门限1b。SA小区的信号质量低于私有门限1a且高于私有门限1b时，UE可以从SA小区重选至NSA小区。SA小区的信号质量低于私有门限1b时，UE可以从SA小区重选至NSA小区/普通LTE小区，且优先重选至NSA小区。
下面结合图19～图22，对现有的终端设备从NSA小区/普通LTE小区切换至SA小区或建立 ENDC双连接来连接5G小区的过程进行说明。
示例性的，图19为现有的终端设备从NSA小区/普通LTE小区切换到NR小区的场景示意图。如图19所示，UE1和UE2当前驻留在NSA小区/普通LTE小区。UE1和UE2可以为空闲态，也可以为连接态。NSA小区/普通LTE小区的覆盖范围为区域21，NR小区的信号覆盖范围为区域11。其中，在区域12内，NR小区的信号质量非常好，例如，大于-95dBm，本实施例对衡量小区信号非常好的门限值不做限定。区域11和区域21存在重叠区域。UE1还位于区域11内，UE2还位于区域12内。需要说明，图19对NR小区、NSA小区和普通LTE小区的信号覆盖范围并不形成限定。
可选的，在一个场景中，UE为连接态，当前接入NSA小区/普通LTE小区。结合图19、图20中的(a)和图21，对现有的终端设备处于连接态时从NSA小区/普通LTE小区切换到NR小区的过程进行说明。如图21所示，可以包括：
S2101、eNB向UE发送关于B1事件的测量配置信息。
相应的，UE接收eNB发送的测量配置信息。测量配置信息可以包括B1事件异系统邻区门限。本实施例对B1事件异系统邻区门限的具体取值不做限定。可选的，测量配置信息还可以包括异系统小区(NR小区)的频点。可选的，测量配置信息可以通过RRC信令传输。
S2102、UE对NR小区进行信号测量。若NR小区的信号质量高于B1事件异系统邻区门限，则上报B1事件的测量报告。相应的，eNB接收UE发送的测量报告。
举例说明。参见图19。假设，B1事件异系统邻区门限为-106dBm。UE2检测到NR小区的信号质量为-80dBm，高于-106dBm，则上报B1事件的测量报告。UE1检测到NR小区的信号质量为-105dBm，高于-106dBm，则上报B1事件的测量报告。
S2103、eNB根据UE上报的B1事件确定目标小区，UE从NSA小区/普通LTE小区切换到NR小区。
可选的，若UE当前驻留在NSA小区，目标小区可以为与NSA小区连接的5G小区，UE可以与目标小区建立ENDC双连接。
可选的，若UE当前驻留在NSA小区，目标小区可以为SA小区，UE可以通过小区重定向流程或小区切换流程切换至SA小区。
可选的，若UE当前驻留在普通LTE小区，目标小区可以为SA小区，UE可以通过小区重定向流程或小区切换流程切换至SA小区。
其中，小区切换流程、小区重定向流程和建立ENDC双连接均可以为现有流程。
可见，在连接态UE从NSA小区/普通LTE小区切换到NR小区的场景中，NR小区的信号质量需要高于网络侧配置的B1事件异系统邻区门限。目前，由于网络的设置策略，B1事件异系统邻区门限通常取值较低，导致UE很容易从NSA小区/普通LTE小区切换到NR小区。例如S2102中的举例，即使UE1所在位置处NR小区的信号质量不好，依然可以上报B1事件，完成切换。
可选的，在另一个场景中，UE为空闲态，当前驻留在NSA小区/普通LTE小区。结合图19、图20中的(b)和图22，对现有的终端设备处于连接态时从NSA小区/普通LTE小区切换到SA小区的过程进行说明。如图22所示，可以包括：
S2201、UE当前驻留在NSA小区/普通LTE小区。
本步骤可以为现有的小区选择流程。
S2202、UE判断是否存在小区信号质量大于网络侧配置的高优先级重选邻区门限3的SA小 区。
其中，从SA小区重选至LTE小区通常认为是低优先级重选，相反的，从LTE小区重选至SA小区认为是高优先级重选。本实施例对高优先级重选邻区门限3的具体取值不做限定。UE可以根据网络邻区配置进行NR测量。如果判断存在小区信号质量大于高优先级重选邻区门限3的SA小区，则执行S2203。
S2203、UE进行小区重选流程，重选至SA小区。
本步骤可以为现有的从SA小区重选至NSA小区/普通LTE小区的小区重选流程。
可见，对于空闲态UE从NSA小区/普通LTE小区重选到SA小区的场景，原理与UE为连接态时相似，均涉及网络侧配置的异系统信号门限。UE为连接态时，涉及的参数包括B1事件异系统邻区门限。UE为空闲态时，涉及的参数包括高优先级重选邻区门限3。UE为空闲态时也存在如下问题：UE更容易驻留在SA小区，导致功耗增大、发热严重、续航时间缩短。
本申请实施例提供一种小区切换方法，适用于终端设备从NSA小区/普通LTE小区切换到NR小区的场景。在本实施例中，UE可以设置私有门限3，私有门限3大于网络侧配置的B1事件异系统邻区门限或高优先级重选邻区门限3。UE可以将NR小区的信号质量与私有门限3进行比较，当NR小区的信号质量高于私有门限3时，终端设备可以从NSA小区/普通LTE小区切换到NR小区的场景。通过设置私有门限3，抬升了终端设备从NSA小区/普通LTE小区切换到NR小区时异系统的切换判断条件，当NR小区的信号质量非常好时才可以切换到NR小区，节约了UE功耗、降低了UE发热量、延长了续航时间。同时，也提升了业务速率。
需要说明，本实施例对私有门限3的具体取值不做限定。
下面结合图23～图25进行详细说明。
示例性的，图23为本申请实施例提供的终端设备从NSA小区/普通LTE小区切换到NR小区的场景示意图。图23与图19相比，区别在于：在图19中，终端设备可以获取网络侧配置的B1事件异系统邻区门限或高优先级重选邻区门限3，并将NR小区的信号质量与其进行比较，作为异系统的切换判断条件。在图23中，终端设备可以获取网络侧配置的B1事件异系统邻区门限或高优先级重选邻区门限3，但是将NR小区的信号质量与UE侧设置的私有门限3进行比较，作为异系统的切换判断条件。在图23中，UE1检测到NR小区的信号质量低于私有门限3，不会上报B1事件，不会从NSA小区/普通LTE小区切换到NR小区。UE2检测到NR小区的信号质量高于私有门限3，可以从NSA小区/普通LTE小区切换到NR小区。
可选的，在一个场景中，UE为连接态，当前接入NSA小区/普通LTE小区。如图24所示，本实施例提供的小区切换方法，可以包括：
S2101、eNB向UE发送关于B1事件的测量配置信息。
可选的，也可以采用B2事件，那么gNB将向UE发送关于B2事件的测量配置信息。
S2402、UE对NR小区进行信号测量。若NR小区的信号质量高于私有门限3，则上报B1事件的测量报告。相应的，eNB接收UE发送的测量报告。
可选的，也可以采用B2事件。那么，若NSA小区/普通LTE小区的信号质量低于B2事件服务小区门限，NR小区的信号质量高于私有门限3，则上报B2事件的测量报告。
S2103、eNB根据UE上报的B1事件确定目标小区，UE从NSA小区/普通LTE小区切换到NR小区。
可选的，在另一个场景中，UE为空闲态，当前驻留在NSA小区/普通LTE小区。如图25所示，本实施例提供的小区切换方法，可以包括：
S2201、UE当前驻留在NSA小区/普通LTE小区。
S2502、UE判断是否存在小区信号质量大于私有门限3的SA小区。
UE可以根据网络邻区配置进行NR测量，或者，自主进行SA小区搜索。可选的，UE可以根据历史频点自主进行SA小区搜索，历史频点可以包括UE曾经驻留过的SA小区的频点。如果存在小区信号质量大于私有门限3的SA小区，则执行S2203。
S2203、UE进行小区重选流程，重选至SA小区。
可选的，本申请实施例还提供一种小区切换方法，适用于终端设备需要从普通LTE小区快速切换到NR小区的场景。在本实施例中，UE当前驻留在普通LTE小区，可以处于连接态或空闲态。当UE需要从普通LTE小区快速切换到NR小区时，UE可以主动发起从普通LTE小区切换到NR小区的流程。UE可以设置私有门限4，私有门限4小于私有门限3。本实施例对私有门限4的具体取值不做限定。UE确定目标NR小区时，可以将NR小区的信号质量与私有门限4进行比较，当NR小区的信号质量高于私有门限4时，终端设备可以从普通LTE小区切换到NR小区。通过设置私有门限4，在终端设备从普通LTE小区快速切换到NR小区的基础上，满足了业务速率需求。
如图26所示，本实施例提供的小区切换方法，可以包括：
S2601、UE前台运行白名单应用程序。
其中，白名单应用程序可以为进行大流量业务的应用程序，例如，视频类应用程序、数据下载类应用程序，测速应用等。
需要说明的是，S2601为终端设备确定需要从普通LTE小区快速切换到NR小区的一种预设条件，还可以为其他预设条件，本实施例对此不作限定。例如，UE确定待上传数据或者待下载数据的数据量大于预设数值。又例如，UE确定待传输的数据对时延要求较高。
S2602、若UE处于连接态，则执行L2NR重建立流程，从普通LTE小区切换到NR小区。
其中，L2NR重建立流程的实现方式是：终端按照标准协议在4G接入层发起重建立流程，具体是首先本地释放RRC链路及层3/层2数据连接，然后开始小区搜索，在搜索过程优先搜索NR小区，如果搜索到符合条件的NR小区，则UE在该NR小区发起接入流程，重新建立RRC连接，如果没有搜索到符合条件的NR小区，则UE搜索LTE小区，并在LTE小区(可能是原服务小区，也可能不是，不做规定)上完成重建立流程，重新建立RRC连接。在本实施例中的L2NR重建立流程中，UE确定目标NR小区时，可以将NR小区的信号质量与私有门限4进行比较。通过L2NR重建立流程，UE可以主动发起从普通LTE小区切换到NR小区，缩短了切换时延。
S2603、若UE处于空闲态，则触发进行NR小区的搜索。
具体的，UE可以根据历史频点自主进行NR小区搜索，历史频点可以包括UE曾经驻留过的NR小区的频点。
S2604、若存在NR小区的信号强度高于私有门限4，则UE接入该NR小区。
可以理解的是，终端设备为了实现上述功能，其包含了执行各个功能相应的硬件和/或软件模块。结合本文中所公开的实施例描述的各示例的算法步骤，本申请能够以硬件或硬件和计算机软 件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。本领域技术人员可以结合实施例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。
本申请实施例可以根据上述方法示例对终端设备进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功能集成在一个处理模块中。需要说明的是，本申请实施例中对模块的划分是示意性的，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。需要说明的是，本申请实施例中模块的名称是示意性的，实际实现时对模块的名称不做限定。
在采用对应各个功能划分各个功能模块的情况下，图27为本申请实施例提供的终端设备的一种结构示意图。如图27所示，该终端设备可以包括：通信模块2701和处理模块2702。
通信模块2701，用于向其他设备发送数据或者从其他设备接收数据。例如，接收系统消息、接收A2事件的测量配置信息、B1事件的测量配置信息、B2事件的测量配置信息、发送A2事件的测量报告、发送B1事件的测量报告或发送B2事件的测量报告。
处理模块2702，用于检测当前服务小区的信号质量、检测异系统小区的信号质量、搜索小区、确定切换的目标小区、确定重选的目标小区，或执行小区重选流程、小区切换流程、建立ENDC双连接等。
需要说明的是，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
请参考图28，其示出了本申请实施例提供的终端设备的另一种结构，该终端设备包括：处理器2801、接收器2802、发射器2803、存储器2804和总线2805。处理器2801包括一个或者多个处理核心，处理器2801通过运行软件程序以及模块，从而执行各种功能的应用以及信息处理。接收器2802和发射器2803可以实现为一个通信组件，该通信组件可以是一块基带芯片。存储器2804通过总线2805和处理器2801相连。存储器2804可用于存储至少一个程序指令，处理器2801用于执行至少一个程序指令，以实现上述实施例的技术方案。其实现原理和技术效果与上述方法相关实施例类似，此处不再赘述。
当终端开机后，处理器可以读取存储器中的软件程序，解释并执行软件程序的指令，处理软件程序的数据。当需要通过天线发送数据(例如，A2事件的测量报告)时，处理器对待发送的数据进行基带处理后，输出基带信号至控制电路中的控制电路，控制电路将基带信号进行射频处理后将射频信号通过天线以电磁波的形式向外发送。当有数据发送到终端时，控制电路通过天线接收到射频信号，将射频信号转换为基带信号，并将基带信号输出至处理器，处理器将基带信号转换为数据并对该数据进行处理。
本领域技术人员可以理解，为了便于说明，图28仅示出了一个存储器和处理器。在实际的终端中，可以存在多个处理器和存储器。存储器也可以称为存储介质或者存储设备等，本申请实施例对此不做限制。
作为一种可选的实现方式，处理器可以包括基带处理器和中央处理器，基带处理器主要用于对通信数据进行处理，中央处理器主要用于执行软件程序，处理软件程序的数据。本领域技术人员可以理解，基带处理器和中央处理器可以集成在一个处理器中，也可以是各自独立的处理器，通过总线等技术互联。本领域技术人员可以理解，终端可以包括多个基带处理器以适应不同的网 络制式，终端可以包括多个中央处理器以增强其处理能力，终端的各个部件可以通过各种总线连接。该基带处理器也可以表述为基带处理电路或者基带处理芯片。该中央处理器也可以表述为中央处理电路或者中央处理芯片。对通信协议以及通信数据进行处理的功能可以内置在处理器中，也可以以软件程序的形式存储在存储器中，由处理器执行软件程序以实现基带处理功能。该存储器可以集成在处理器中，也可以独立在处理器之外。该存储器包括高速缓存Cache，可以存放频繁访问的数据/指令。
在本申请实施例中，处理器可以是通用处理器、数字信号处理器、专用集成电路、现场可编程门阵列或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件，可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。
在本申请实施例中，存储器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，SS)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，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。本申请各实施例提供的方法中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、网络设备、用户设备或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line，DSL)或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机可以存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质(例如，数字视频光盘(digital video disc，DWD)、或者半导体介质(例如，SSD)等。
本申请实施例提供一种计算机程序产品，当所述计算机程序产品在终端运行时，使得所述终端执行上述实施例中的技术方案。其实现原理和技术效果与上述相关实施例类似，此处不再赘述。
本申请实施例提供一种计算机可读存储介质，其上存储有程序指令，所述程序指令被终端执行时，使得所述终端执行上述实施例的技术方案。其实现原理和技术效果与上述相关实施例类似，此处不再赘述。综上所述，以上实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的范围。

Claims (27)

  1. 一种小区切换方法，其特征在于，应用于通信装置，所述通信装置驻留在独立组网SA小区且处于连接态，所述方法包括：
    接收A2事件的测量配置信息，所述A2事件的测量配置信息包括A2事件门限；
    对所述SA小区进行信号测量，若所述SA小区的信号质量低于第一私有门限，则发送所述A2事件的第一测量报告；所述第一私有门限为所述通信装置设置的且高于所述A2事件门限；
    接收异系统测量事件的测量配置信息，所述异系统测量事件的测量配置信息包括所述SA小区的长期演进LTE邻区的信息；
    对所述LTE邻区进行信号测量，发送第二测量报告；其中，所述第二测量报告中的LTE小区的信号质量高于第一阈值；
    通过小区切换流程从所述SA小区切换至目标小区，所述目标小区为所述LTE小区中的一个小区。
  2. 根据权利要求1所述的方法，其特征在于，所述对所述LTE邻区进行信号测量，发送第二测量报告，包括：
    获取锚点LTE小区信息；
    根据所述锚点LTE小区信息对所述LTE邻区中的锚点LTE小区进行信号测量；
    若所述LTE邻区中存在锚点LTE小区的信号质量高于所述第一阈值，则发送所述第二测量报告；所述LTE小区和所述目标小区均为锚点LTE小区。
  3. 根据权利要求2所述的方法，其特征在于，还包括：
    若所述LTE邻区中没有锚点LTE小区的信号质量高于所述第一阈值，则对所述LTE邻区中的普通LTE小区进行信号测量；
    若所述LTE邻区中存在普通LTE小区的信号质量高于所述第一阈值，则发送所述第二测量报告；所述LTE小区和所述目标小区均为普通LTE小区。
  4. 根据权利要求2所述的方法，其特征在于，所述第一私有门限包括私有门限1a和私有门限1b，所述私有门限1a>所述私有门限1b；
    所述发送所述第二测量报告之前，还包括：
    确定所述SA小区的信号质量低于所述私有门限1a且高于所述私有门限1b。
  5. 根据权利要求3所述的方法，其特征在于，所述第一私有门限包括私有门限1a和私有门限1b，所述私有门限1a>所述私有门限1b；
    所述发送所述第二测量报告之前，还包括：
    确定所述SA小区的信号质量低于所述私有门限1b。
  6. 根据权利要求2-5中任一项所述的方法，其特征在于，所述获取锚点LTE小区信息，包括：
    将所述通信装置的位置信息发送给云服务器；
    接收所述云服务器发送的所述锚点LTE小区信息；
    和/或，
    获取所述锚点LTE小区信息，所述锚点LTE小区信息包括所述通信装置曾经驻留的锚点LTE小区的信息。
  7. 根据权利要求1-6中任一项所述的方法，其特征在于，所述异系统测量事件的测量配置信息包括B1事件的测量配置信息或者B2事件的测量配置信息。
  8. 根据权利要求1-6任一项所述的方法，其特征在于，所述第一阈值包括下列中的任意一项：B1事件异系统邻区门限、B2事件异系统邻区门限或第二私有门限，所述第二私有门限为所述通信装置设置的。
  9. 一种小区切换方法，其特征在于，应用于通信装置，所述通信装置驻留在独立组网SA小区且处于空闲态，所述方法包括：
    在检测到所述SA小区的信号质量低于第一私有门限时，触发搜索长期演进LTE小区；所述第一私有门限高于网络侧配置的重选至低优先级小区的服务小区门限，所述LTE小区包括锚点LTE小区和/或普通LTE小区；
    若搜索到目标小区，则通过小区重选流程从所述SA小区重选至所述目标小区；所述目标小区为所述LTE小区中的一个小区，且所述目标小区的信号质量高于第一阈值。
  10. 根据权利要求9所述的方法，其特征在于，所述搜索到目标小区，包括：
    获取锚点LTE小区信息；
    根据所述锚点LTE小区信息进行锚点LTE小区的搜索；
    若存在锚点LTE小区的信号质量高于所述第一阈值，则确定搜索到目标小区；所述目标小区为锚点LTE小区。
  11. 根据权利要求10所述的方法，其特征在于，还包括：
    若没有锚点LTE小区的信号质量高于所述第一阈值，则进行普通LTE小区的搜索；
    若存在普通LTE小区的信号质量高于所述第一阈值，则确定搜索到目标小区；所述目标小区为普通LTE小区。
  12. 根据权利要求10所述的方法，其特征在于，所述第一私有门限包括私有门限1a和私有门限1b，所述私有门限1a>所述私有门限1b；
    所述确定搜索到目标小区之前，还包括：
    确定所述SA小区的信号质量低于所述私有门限1a且高于所述私有门限1b。
  13. 根据权利要求11所述的方法，其特征在于，所述第一私有门限包括私有门限1a和私有门限1b，所述私有门限1a>所述私有门限1b；
    所述确定搜索到目标小区之前，还包括：
    确定所述SA小区的信号质量低于所述私有门限1b。
  14. 根据权利要求10-13中任一项所述的方法，其特征在于，所述获取锚点LTE小区信息，包括：
    将所述通信装置的位置信息发送给云服务器；
    接收所述云服务器发送的所述锚点LTE小区信息；
    和/或，
    获取所述锚点LTE小区信息，所述锚点LTE小区信息包括所述通信装置曾经驻留的锚点LTE小区的信息；
    和/或，
    接收LTE小区的系统消息，所述系统消息中包括指示所述LTE小区是否为锚点LTE小区的信元；
    根据所述信元获取所述锚点LTE小区信息。
  15. 根据权利要求9-14中任一项所述的方法，其特征在于，所述第一阈值包括下列中的任意一项：低优先级重选的邻区门限或第二私有门限，所述低优先级重选的邻区门限为网络侧配置的，所述第二私有门限为所述通信装置设置的。
  16. 一种小区切换方法，其特征在于，应用于通信装置，所述通信装置驻留在长期演进LTE小区且处于连接态，所述LTE小区为锚点LTE小区或普通LTE小区，所述方法包括：
    接收B1事件或B2事件的测量配置信息，所述B1事件或B2事件的测量配置信息包括所述LTE小区的新空口NR邻区的信息；
    对所述NR邻区进行信号测量，发送第一测量报告；其中，所述第一测量报告中的NR小区的信号质量高于第三私有门限，所述第三私有门限为所述通信装置设置的，所述第三私有门限高于B1事件异系统邻区门限或B2事件异系统邻区门限；
    和目标NR小区建立连接，所述目标NR小区为所述NR小区中的一个小区。
  17. 根据权利要求16所述的方法，其特征在于，所述LTE小区为普通LTE小区，所述和目标NR小区建立连接，包括：
    通过小区切换流程从所述普通LTE小区切换至所述目标NR小区，所述目标NR小区为独立组网SA小区。
  18. 根据权利要求16所述的方法，其特征在于，所述LTE小区为锚点LTE小区，所述和目标NR小区建立连接，包括：
    通过小区切换流程从所述锚点LTE小区切换至所述目标NR小区，所述目标NR小区为SA小区；或者，
    建立与所述目标NR小区的4G-5G无线接入的双连接ENDC双连接，所述目标NR小区为与所述锚点LTE小区连接的NR小区。
  19. 一种小区切换方法，其特征在于，应用于通信装置，所述通信装置驻留在长期演进LTE小区且处于空闲态，所述LTE小区为锚点LTE小区或普通LTE小区，所述方法包括：
    搜索独立组网SA小区；
    若搜索到目标SA小区，则通过小区重选流程从所述LTE小区重选至所述目标SA小区；其中，所述目标SA小区的信号质量高于第三私有门限，所述第三私有门限为所述通信装置设置的，且高于网络侧配置的高优先级重选的邻区门限。
  20. 根据权利要求19所述的方法，其特征在于，所述搜索独立组网SA小区，包括：
    获取所述LTE小区的SA邻区；
    根据所述SA邻区进行SA小区的搜索。
  21. 根据权利要求19所述的方法，其特征在于，所述搜索独立组网SA小区，包括：
    获取SA小区的频点，所述SA小区的频点包括所述通信装置曾经驻留的SA小区的频点；
    根据所述SA小区的频点进行SA小区的搜索。
  22. 一种小区切换方法，其特征在于，应用于通信装置，所述通信装置驻留在普通长期演进LTE小区，所述方法包括：
    在满足从LTE小区快速切换到新空口NR小区的预设条件时，若所述通信装置处于连接态， 则执行L2NR重建立流程从所述普通LTE小区切换至目标NR小区；
    若所述通信装置处于空闲态，则搜索NR小区；
    若搜索到目标NR小区，则重选至所述目标NR小区；
    其中，所述目标NR小区的信号质量高于第四私有门限，所述第四私有门限为所述通信装置设置的。
  23. 根据权利要求22所述的方法，其特征在于，所述预设条件包括下列中的任意一项：
    前台运行白名单应用程序；或
    待上传数据或待下载数据的数据量大于预设数值。
  24. 一种通信装置，其特征在于，所述通信装置包括处理器，所述处理器用于与存储器耦合，并读取存储器中的指令并根据所述指令使得所述通信装置执行权利要求1-23中任一项所述方法。
  25. 根据权利要求24所述的通信装置，其特征在于，所述通信装置为终端或芯片。
  26. 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存储有计算机指令，当所述计算机指令在电子设备上运行时，使得所述电子设备执行如权利要求1-23中任一项所述的方法。
  27. 一种包含指令的计算机程序产品，其特征在于，当所述计算机程序产品在终端上运行时，使得所述终端执行如权利要求1-23中任一项所述的方法。
PCT/CN2021/113609 2020-10-22 2021-08-19 小区切换方法、通信装置及存储介质 WO2022083260A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202011142864.9A CN114390610B (zh) 2020-10-22 2020-10-22 小区切换方法、通信装置及存储介质
CN202011142864.9 2020-10-22

Publications (1)

Publication Number Publication Date
WO2022083260A1 true WO2022083260A1 (zh) 2022-04-28

Family

ID=81194816

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/113609 WO2022083260A1 (zh) 2020-10-22 2021-08-19 小区切换方法、通信装置及存储介质

Country Status (2)

Country Link
CN (1) CN114390610B (zh)
WO (1) WO2022083260A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11665764B1 (en) * 2021-06-24 2023-05-30 T-Mobile Innovations Llc Dynamically determine optimal 5G new radio configuration for dual radio access technology capable user devices

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116723552A (zh) * 2022-10-31 2023-09-08 荣耀终端有限公司 通信方法、装置、设备和存储介质

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109548075A (zh) * 2019-01-10 2019-03-29 Oppo广东移动通信有限公司 测量报告上报方法、装置、存储介质及移动终端
CN110035464A (zh) * 2018-01-11 2019-07-19 华为技术有限公司 一种切换方法、终端设备和网络设备
CN111034277A (zh) * 2017-08-28 2020-04-17 高通股份有限公司 用于模式选择和蜂窝小区选择/重选的技术
CN111050370A (zh) * 2020-01-16 2020-04-21 惠州Tcl移动通信有限公司 网络切换方法、装置、存储介质及电子设备
US10791487B1 (en) * 2019-02-08 2020-09-29 Sprint Spectrum L.P. Controlling handover between dual-connectivity service and standalone service, with dynamic handover threshold

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108260136B (zh) * 2016-12-29 2021-02-26 中国移动通信集团广西有限公司 一种异频测量控制方法及装置
CN108882293B (zh) * 2018-06-11 2020-10-13 Oppo广东移动通信有限公司 一种小区切换方法、终端及计算机可读存储介质

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111034277A (zh) * 2017-08-28 2020-04-17 高通股份有限公司 用于模式选择和蜂窝小区选择/重选的技术
CN110035464A (zh) * 2018-01-11 2019-07-19 华为技术有限公司 一种切换方法、终端设备和网络设备
CN109548075A (zh) * 2019-01-10 2019-03-29 Oppo广东移动通信有限公司 测量报告上报方法、装置、存储介质及移动终端
US10791487B1 (en) * 2019-02-08 2020-09-29 Sprint Spectrum L.P. Controlling handover between dual-connectivity service and standalone service, with dynamic handover threshold
CN111050370A (zh) * 2020-01-16 2020-04-21 惠州Tcl移动通信有限公司 网络切换方法、装置、存储介质及电子设备

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11665764B1 (en) * 2021-06-24 2023-05-30 T-Mobile Innovations Llc Dynamically determine optimal 5G new radio configuration for dual radio access technology capable user devices

Also Published As

Publication number Publication date
CN114390610B (zh) 2022-12-09
CN114390610A (zh) 2022-04-22

Similar Documents

Publication Publication Date Title
US11963132B2 (en) Paging method, base station and user equipment
WO2020164407A1 (zh) 网络选择方法、网络设备以及终端设备
RU2668071C1 (ru) Способ и устройство оптимизации сигнализации
WO2022099520A1 (zh) 接入控制信息处理方法及装置、通信设备及存储介质
WO2017152757A1 (zh) 一种小区切换方法、系统及相关设备
WO2019192440A1 (zh) 测量方法、显示控制方法及设备
WO2017118199A1 (zh) 一种数据调度方法、基站及系统
US11109252B2 (en) Method and apparatus for adjusting network configuration based on channel busy ratio in wireless communication system
US20220124581A1 (en) Satellite cell reselection control method and related device
EP2635070A1 (en) Method and Apparatus for Communicating Neighbor Cells
TWI772827B (zh) 在rrc連接中閒置量測結果之處理
WO2021217672A1 (zh) 网络切片的负载控制方法及相关产品
WO2022083260A1 (zh) 小区切换方法、通信装置及存储介质
WO2017148339A1 (zh) 一种网络连接的控制方法及设备
EP2996396A1 (en) Method and device for interworking between access technology networks
WO2022067643A1 (zh) 一种小区选择方法、寻呼方法及装置
WO2022007484A1 (zh) 重定向方法、网络设备、终端设备及可读存储介质
WO2017045195A1 (zh) 网络指示的处理装置、方法以及通信系统
WO2019196912A1 (zh) 一种小区搜索方法及通信装置
US20240064587A1 (en) Cell reselection method, communication apparatus, and computer-readable storage medium
WO2022027511A1 (zh) 小区选择或重选方法，信息发送方法以及装置
US20220330056A1 (en) Communication Method and Apparatus
WO2021226761A1 (zh) 测量放松的方法及装置、终端设备、网络设备
CN110213803A (zh) 群组用户的移动方法、装置、监听终端及核心网
WO2022031805A1 (en) Rach procedures for requesting slice support information

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21881679

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21881679

Country of ref document: EP

Kind code of ref document: A1