CN115278796A

CN115278796A - Cell switching method, cell switching device, terminal equipment and storage medium

Info

Publication number: CN115278796A
Application number: CN202210850782.2A
Authority: CN
Inventors: 周汉心
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2022-07-19
Filing date: 2022-07-19
Publication date: 2022-11-01

Abstract

The application discloses a cell switching method, which is applied to terminal equipment, wherein the terminal equipment resides in a service cell, and the cell switching method comprises the following steps: receiving a measurement control message of an event sent by a network device, wherein the measurement control message comprises at least one measurement object; measuring each measurement object to obtain a measurement value of the measurement object, wherein the measurement value comprises reference signal received power and a signal-to-interference-plus-noise ratio of a reference signal; and if the reference signal receiving power and the signal-to-interference plus noise ratio meet the report prohibiting condition, prohibiting or delaying sending a measurement report of an event to the network equipment, wherein the measurement report is used for triggering switching to the adjacent cell. The application also discloses a cell switching device, terminal equipment and a storage medium.

Description

Cell switching method, cell switching device, terminal equipment and storage medium

Technical Field

The present application relates to the field of communications technologies, and in particular, to a cell switching method, a cell switching apparatus, a terminal device, and a storage medium.

Background

A terminal device is switched from a New Radio (NR) cell to an adjacent cell, such as a Long Term Evolution (LTE) cell, and generally has three stages: a first stage, a measurement stage: an NR cell needs to be configured with an LTE neighbor cell, a terminal device establishes a connection in the NR cell, and a network device, such as a 5G base station (5G nodeb, gNB), configures an A2 measurement event to the terminal device, after the terminal device measures that the A2 event is satisfied, the gNB configures a B1/B2 event based on a Radio Access Technology (RAT) to the terminal device, and the terminal device reports a measurement report of the B1/B2 event after determining that the B1/B2 event is satisfied. The second stage, the decision stage: and the gNB filters the neighbor cell information in the measurement report, forms a target switching list according to the signal strength, and selects one cell from the target switching list as a target cell to start a switching request. The third stage, the execution stage: the terminal equipment performs handover and resides in a 4G base station (eNB) to establish a bearer, and the eNB deletes the context of the terminal equipment, and completes the handover.

However, when the signal of the neighboring cell of the NR cell is weak, the terminal device reports the measurement result of the event of the abnormal or weak signal neighboring cell, such as the measurement result of B1/B2, to the base station, and the base station initiates the cell to switch to the abnormal neighboring cell, which may cause communication service communication failure if the unavailable neighboring cell is used.

Disclosure of Invention

The embodiments of the present application are intended to provide a cell switching method, a cell switching apparatus, a terminal device, and a storage medium, so as to solve the problem in the related art that a communication service communication failure may be caused when the terminal device reports a measurement result of an event of an abnormal or weak signal neighboring cell to a base station, and the base station initiates a cell switching to the abnormal, unavailable neighboring cell.

The technical scheme of the application is realized as follows:

a cell switching method is applied to a terminal device, the terminal device resides in a service cell, and the method comprises the following steps:

receiving a measurement control message of an event sent by a network device, wherein the measurement control message comprises at least one measurement object;

measuring each measurement object to obtain a measurement value of the measurement object, wherein the measurement value comprises reference signal received power and a signal-to-interference-plus-noise ratio of a reference signal;

and if the reference signal receiving power and the signal-to-interference plus noise ratio meet the report prohibiting condition, prohibiting or delaying sending the measurement report of the event to the network equipment, wherein the measurement report is used for triggering switching to an adjacent cell.

A cell switching apparatus, the cell switching apparatus comprising:

a receiving unit, configured to receive a measurement control message of an event sent by a network device, where the measurement control message includes at least one measurement object;

the measuring unit is used for measuring each measuring object to obtain a measuring value of the measuring object, wherein the measuring value comprises reference signal receiving power and a signal-to-interference-plus-noise ratio of a reference signal;

and a processing unit, configured to prohibit or delay sending the measurement report of the event to the network device if the reference signal received power and the signal-to-interference-plus-noise ratio satisfy a report prohibition condition, where the measurement report is used to trigger handover to an adjacent cell.

A terminal device, the terminal device comprising: a processor, a memory, and a communication bus;

the communication bus is used for realizing communication connection between the processor and the memory;

the processor is configured to execute a cell handover procedure stored in the memory to implement the steps of the cell handover method as described above.

A storage medium storing one or more programs, the one or more programs being executable by one or more processors to implement the steps of a cell handover method as described above.

The present application provides a cell switching method, a cell switching apparatus, a terminal device and a storage medium, wherein the terminal device resides in a serving cell, and the cell switching method includes: receiving a measurement control message of an event sent by a network device, wherein the measurement control message comprises at least one measurement object; measuring each measuring object to obtain a measured value of the measuring object, wherein the measured value comprises reference signal receiving power and a signal to interference plus noise ratio of a reference signal; if the reference signal receiving power and the signal-to-interference plus noise ratio meet the report prohibiting condition, prohibiting or delaying sending a measurement report of an event to the network equipment, wherein the measurement report is used for triggering switching to an adjacent cell; therefore, the problem that communication service communication fails due to the fact that the terminal device reports the measurement result of the event of the abnormal or weak signal neighbor cell to the network device and the network device initiates cell switching to the abnormal or unavailable neighbor cell is solved, the stability of the communication service is improved, and the network switching is guaranteed to be in accordance with the network state.

Drawings

Fig. 1 is a schematic diagram of a network architecture provided in an embodiment of the present application;

fig. 2 is a first flowchart illustrating a cell handover method according to an embodiment of the present application;

fig. 3 is a second flowchart illustrating a cell handover method according to an embodiment of the present application;

fig. 4 is a third flowchart illustrating a cell handover method according to an embodiment of the present application;

fig. 5 is a fourth flowchart illustrating a cell handover method according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a cell switching apparatus according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a terminal device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Fig. 1 is a schematic diagram of a network architecture according to an embodiment of the present application.

As shown in fig. 1, the communication system 100 may include a core network device 101, a serving cell terminal device 102, a neighbor cell terminal device 103, and a network device (the network device includes a serving cell base station 104 and a neighbor cell base station 105). The serving cell base station 104 may communicate with the serving cell terminal apparatus 102 over the air. The neighbor cell base station 105 can communicate with the neighbor cell terminal apparatus 103 through an air interface. In the embodiment of the application, multi-service transmission is supported between the terminal equipment and the network equipment.

It should be understood that the embodiment of the present application is only illustrated as the communication system 100, but the embodiment of the present application is not limited thereto. That is to say, the technical solution of the embodiment of the present application can be applied to various communication systems, for example: a Long Term Evolution (LTE) System, an LTE Time Division Duplex (TDD) System, a Universal Mobile Telecommunications System (UMTS), an Internet of Things (Internet of Things, ioT) System, a narrowband Internet of Things (Narrow Band Internet of Things, NB-IoT) System, an enhanced Machine-Type Communications (eMTC) System, a 5G communication System also known as an NR communication System, or a future communication System, and the like.

In the communication system 100 shown in fig. 1, the serving cell base station 104 may be an access network device communicating with the serving cell terminal device 102, and the neighbor cell base station 105 may be an access network device communicating with the neighbor cell terminal device 103. An access network device may provide communication coverage for a particular geographic area and may communicate with terminal devices (e.g., UEs) located within the coverage area.

The serving cell base station 104 may be a base station (gNB) in an NR system, or a wireless controller in a Cloud Radio Access Network (CRAN), or the serving cell base station 104 may be a relay station, an Access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, or a Network device in a Public Land Mobile Network (PLMN) for future evolution, or the like.

The neighboring cell base station 105 may be an evolved Node B (eNB or eNodeB) in a Long Term Evolution (LTE) system, or a Next Generation Radio Access Network (NG RAN) device, or a gNB in an NR system, or a Radio controller in a CRAN, or the neighboring cell base station 105 may be a relay station, an Access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, or a Network device in a PLMN for future Evolution, or the like.

Terminal devices include, but are not limited to, any terminal device that employs a wired or wireless connection with a network device or other terminal device. For example, a terminal device can refer to an access terminal, user Equipment (UE), subscriber unit, subscriber station, mobile station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or User Equipment. An access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, an IoT device, a satellite handset, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handset with Wireless communication capability, a computing device or other processing device connected to a Wireless modem, a vehicle mounted device, a wearable device, a terminal device in a 5G network or a terminal device in a future evolution network, etc.

The terminal Device may be used for Device-to-Device (D2D) communication.

The core network device 101 may be a 5G core network (5G core,5 gc) device, such as an Access and Mobility Management Function (AMF) device, an Authentication Server Function (AUSF) device, a User Plane Function (UPF) device, and a Session Management Function (SMF) device. Optionally, the Core network device 101 may also be an Evolved Packet Core (EPC) device of the LTE network, for example, a Session Management Function + Core Packet Gateway (SMF + PGW-C) device of the Core network. It is understood that SMF + PGW-C may perform the functions that SMF and PGW-C can perform simultaneously. In the network evolution process, the name of the core network device may be changed, or a new network entity is formed by dividing the functions of the core network, which is not limited in this embodiment of the present application.

Communication between the functional units in the communication system 100 may also be implemented by establishing a connection through a next generation Network (NG) interface.

For example, the terminal device establishes an air interface connection with the access network device through the NR interface, and is used to transmit user plane data and control plane signaling; the terminal equipment can establish control plane signaling connection with the AMF through an NG interface 1 (N1 for short); an access network device, such as a next generation radio access base station (gNB), may establish a user plane data connection with a UPF through an NG interface 3 (N3 for short); the access network equipment can establish control plane signaling connection with the AMF through an NG interface 2 (N2 for short); the UPF can establish a control plane signaling connection with the SMF through an NG interface 4 (N4 for short); the UPF can interact user plane data with a data network through an NG interface 6 (N6 for short); the AMF can establish a control plane signaling connection with the SMF through an NG interface 11 (N11 for short); the SMF may establish a control plane signaling connection with the PCF via NG interface 7 (N7 for short).

In this embodiment, the serving cell base station 104 and the neighboring cell base station 105 may be managed by the same core network device 101, or managed by different network management servers, which is not specifically limited in this application.

The serving cell base station 104 manages a serving cell, the neighboring cell base station 105 manages a neighboring cell, and the serving cell and the neighboring cell may be a common-frequency cell or a different-frequency cell.

The serving cell terminal apparatus 102 may be handed over from the serving cell to the neighbor cell under the control of the serving cell base station 104.

Fig. 1 exemplarily shows two base stations, a core network device and a plurality of terminal devices, and optionally, the wireless communication system 100 may include more than two base station devices and may include other numbers of terminal devices within the coverage area of each base station, which is not limited in this embodiment of the present application.

It should be noted that fig. 1 illustrates a system to which the present application is applied by way of example, and of course, the method shown in the embodiment of the present application may also be applied to other systems. Further, the terms "system" and "network" are often used interchangeably herein. The term "and/or" herein is merely an association relationship describing an associated object, and means that there may be three relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship. It should also be understood that "indication" mentioned in the embodiments of the present application may be a direct indication, an indirect indication, or an indication of an association relationship. For example, a indicates B, which may mean that a directly indicates B, e.g., B may be obtained by a; it may also mean that a indicates B indirectly, e.g. a indicates C, by which B may be obtained; it can also mean that there is an association between a and B. It should also be understood that "correspond" mentioned in the embodiments of the present application may mean that there is a direct or indirect correspondence between the two, and may also mean that there is an association relationship between the two, and may also be a relationship of indicating and being indicated, configuring and being configured, and the like. It should also be understood that "predefined" or "predefined rule" mentioned in the embodiments of the present application may be implemented by pre-storing corresponding codes, tables or other manners that can be used to indicate related information in devices (e.g., including terminal devices and network devices), and the present application is not limited to the specific implementation manner thereof. Such as predefined, may refer to what is defined in the protocol. It should also be understood that in the embodiment of the present application, the "protocol" may refer to a standard protocol in the communication field, and may include, for example, an LTE protocol, an NR protocol, and a related protocol applied in a future communication system, which is not limited in the present application.

For the convenience of understanding of the technical solutions of the embodiments of the present application, the following related technologies of the embodiments of the present application are described below, and the following related technologies may be optionally combined with the technical solutions of the embodiments of the present application as alternatives, and all of them belong to the protection scope of the embodiments of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of the present application only and is not intended to be limiting of the application.

An embodiment of the present application provides a cell switching method, which is applied to a terminal device, where the terminal device resides in a serving cell, and as shown in fig. 2, the method includes the following steps:

step 201, receiving a measurement control message of an event sent by a network device.

Wherein the measurement control message includes at least one measurement object. The measurement object includes a serving cell and at least one neighbor cell.

In the embodiment of the present application, a measurement control message of an event sent by a network device is used to determine whether to perform cell handover. The events include, but are not limited to, a B1 Event (Event B1) or a B2 Event (Event B2). The measurement control message of Event B1 or Event B2 refers to a measurement control message that the quality of the neighboring cell is better than a threshold.

Here, the measurement Control message includes, but is not limited to, a Radio Resource Control (RRC) Connection Reconfiguration (RRC Connection Reconfiguration) message.

In some embodiments, the network device sends a measurement control message of an A2 Event (Event A2) to the terminal device after the terminal device enters the connected state, the measurement control message of Event A2 refers to a measurement control message in which the quality of the serving cell is below a threshold value. And the terminal equipment carries out measurement and judgment according to the measurement control message of the Event A2, and sends a measurement report of the Event A2 to the network equipment when the measurement value meets the reporting configuration requirement in the measurement control message of the Event A2. When receiving the measurement report of the A2 Event, the network equipment issues a measurement control message of Event B1 or Event B2 to the terminal equipment, and initiates measurement for judging whether to execute cell switching. When the terminal equipment receives the measurement control message of the Event B1 or the Event B2, the terminal equipment carries out measurement and judgment according to the measurement control message of the Event B1 or the Event B2.

In other embodiments of the present application, the serving cell is an NR cell, and the neighboring cell is an LTE cell; alternatively, the serving cell and the neighbor cell are both NR cells.

Step 202, measuring each measurement object to obtain a measurement value of the measurement object.

Wherein the measurement value comprises a reference signal received power and a signal to interference plus noise ratio of the reference signal.

In the embodiment of the application, the terminal device performs measurement according to the measurement control message of the Event B1 or the Event B2 when receiving the measurement control message of the Event B1 or the Event B2, including measuring the reference signal received power of the serving cell and the at least one neighbor cell, and the signal to interference plus noise ratio of the reference signal. Here, the reference signal received power of the serving cell is denoted as srv _ rsrp, and the signal to interference plus noise ratio of the reference signal of the serving cell is denoted as srv _ sinr. The reference signal received power of the neighboring cell is denoted as nbr _ rsrp, and the signal-to-interference-plus-noise ratio of the reference signal of the neighboring cell is denoted as nbr _ sinr.

Step 203, if the reference signal receiving power and the signal to interference plus noise ratio satisfy the report prohibition condition, prohibiting or delaying sending a measurement report of an event to the network equipment, where the measurement report is used for triggering handover to an adjacent cell.

In the embodiment of the application, the terminal equipment judges whether the report prohibiting condition is met or not according to the measured reference signal receiving power and the signal-to-interference-plus-noise ratios, namely srv _ rsrp, srv _ sinr, nbr _ rsrp and nbr _ sinr, and once the report prohibiting condition is met, the terminal equipment prohibits or delays sending the measurement report of the event to the network equipment, so that the terminal equipment is prevented from being switched to the abnormal adjacent cell under the condition that the adjacent cell of the network equipment is abnormal or weak signals currently.

The cell switching method provided by the application can be applied to the following scenes: a call scenario of a Voice over New Radio (VoNR) of the terminal device on the 5G, and a scenario of the terminal device receiving an incoming call on the 5G, which are not specifically limited in the present application.

The cell switching method provided by the embodiment of the application is applied to a terminal device, the terminal device resides in a serving cell, and the cell switching method comprises the following steps: receiving a measurement control message of an event sent by a network device, wherein the measurement control message comprises at least one measurement object; measuring each measuring object to obtain a measured value of the measuring object, wherein the measured value comprises reference signal receiving power and a signal to interference plus noise ratio of a reference signal; if the reference signal receiving power and the signal-to-interference plus noise ratio meet the report prohibiting condition, prohibiting or delaying sending a measurement report of an event to the network equipment, wherein the measurement report is used for triggering switching to an adjacent cell; therefore, the problem that communication service communication fails due to the fact that the terminal device reports the measurement result of the event of the abnormal or weak signal neighbor cell to the network device and the network device initiates cell switching to the abnormal or unavailable neighbor cell is solved, the stability of the communication service is improved, and the network switching is guaranteed to be in accordance with the network state.

In other embodiments of the present application, each measurement object is represented by a cell identifier or a frequency point in a cell.

Here, when the measurement object is represented as a cell identifier, the terminal device is instructed to measure the signal quality of the cell indicated by the cell identifier, and therefore, the terminal device needs to measure a parameter value of the signal quality of the cell and use the parameter value as a measurement value of the measurement object for subsequently determining whether to report a measurement report of an event. When the measurement object is a frequency point identifier, the terminal equipment is instructed to measure the signal quality of the frequency point indicated by the frequency point identifier, so that the terminal equipment needs to measure the parameter value of the signal quality of the frequency point and use the parameter value as the measurement value of the measurement object for subsequently judging whether to report the measurement report of the event or not.

In some embodiments of the present application, the measuring object includes a serving cell and at least one neighboring cell, and the reference signal received power and the signal to interference plus noise ratio satisfy the report prohibition condition in step 203 includes: the reference signal receiving power of the serving cell is greater than a first threshold value of the serving cell, the signal to interference plus noise ratio of the serving cell is greater than a second threshold value of the serving cell, and the reference signal receiving power of the neighboring cell is less than a third threshold value of the neighboring cell, or the signal to interference plus noise of the neighboring cell is less than a fourth threshold value of the neighboring cell.

Here, the first threshold value is denoted as srv _ rsrp _ th, the second threshold value is denoted as srv _ sinr _ th, the third threshold value is denoted as nbr _ rsrp _ th, and the fourth threshold value is denoted as nbr _ sinr _ th. The threshold value in the application can be pre-configured in the terminal device according to the actual communication requirement, and can also be dynamically configured according to the dynamic configuration requirement sent by the network device, so that the threshold value can be flexibly configured.

In the embodiment of the application, the terminal equipment judges according to the measurement control message of the Event B1 or the Event B2, and comprises the steps of comparing srv _ rsrp with srv _ rsrp _ th, comparing srv _ sinr with srv _ sinr _ th, comparing nbr _ rsrp with nbr _ rsrp _ th, and comparing nbr _ sinr with nbr _ sinr _ th; or the terminal equipment judges according to the measurement control message of the Event B1 or the Event B2, and the judgment comprises the following steps: judging a result obtained by substituting the logical expression into srv _ rsrp and srv _ rsrp _ th, judging a result obtained by substituting the logical expression into srv _ sinr and srv _ sinr _ th, judging a result obtained by substituting the logical expression into nbr _ rsrp and nbr _ rsrp _ th, and judging a result obtained by substituting the logical expression into nbr _ sinr and nbr _ sinr _ th.

In one implementation scenario, a serving cell is an NR cell, and a neighbor cell is an LTE cell; referring to fig. 3, the terminal device performs measurement and determination according to the measurement control message of Event B1 or Event B2, and the measurement and determination can be implemented by the following steps:

step 301, the terminal device measures the NR cell and the LTE neighbor cell to obtain srv _ rsrp and srv _ sinr of the NR cell and nbr _ rsrp and nbr _ sinr of the LTE neighbor cell.

Step 302, the terminal device obtains threshold values of the NR cell and the LTE neighbor cell to obtain srv _ rsrp _ th, srv _ sinr _ th, nbr _ rsrp _ th, and nbr _ sinr _ th.

Step 303, the terminal device compares sv _ rsrp with sv _ rsrp _ th, compares sv _ sinr with sv _ sinr _ th, compares nbr _ rsrp with nbr _ rsrp _ th, and compares nbr _ sinr with nbr _ sinr _ th, if sv _ rsrp > sv _ rsrp _ th and sv _ sinr > sv _ sinr _ th, and nbr _ rsrp < nbr _ rsrp _ th or nbr _ sinr < nbr _ sinr _ th, it determines that the report prohibition condition is satisfied, otherwise it determines that the report condition is satisfied, and reports the measurement report of the event to the network device.

As can be seen from the above, if the NR serving cell signal is better, the LTE neighboring cell signal quality is worse (i.e. nbr _ rsrp or nbr _ sinr of the neighboring cell is less than the threshold), the terminal device does not report or delay reporting of the Event B1/B2; otherwise, reporting the Event B1/B2 normally.

In some embodiments of the present application, the measurement object includes a serving cell and at least one neighboring cell, the measurement value includes reference signal received power, a signal to interference plus noise ratio of a reference signal, and reference signal received quality, and the reference signal received power and the signal to interference plus noise ratio satisfy a report prohibition condition in step 203 includes: the reference signal receiving power of the serving cell is greater than a first threshold of the serving cell, the signal to interference plus noise ratio of the serving cell is greater than a second threshold of the serving cell, the reference signal receiving quality of the serving cell is greater than a fifth threshold of the serving cell, and the reference signal receiving power of the neighboring cell is less than a third threshold of the neighboring cell, or the signal to interference plus noise of the neighboring cell is less than a fourth threshold of the neighboring cell, or the reference signal receiving quality of the neighboring cell is less than a sixth threshold of the neighboring cell.

Here, the reference signal reception quality of the serving cell is denoted by srv _ rsrq, the fifth threshold value is denoted by srv _ rsrq _ th, the reference signal reception quality of the neighbor cell is denoted by nbr _ rsrq, and the sixth threshold value is denoted by nbr _ rsrq _ th.

In the embodiment of the application, the terminal device determines according to the measurement control message of the Event B1 or the Event B2, including comparing srv _ rsrp with srv _ rsrp _ th, comparing srv _ sinr with srv _ sinr _ th, comparing srv _ rsrq with srv _ rsrq _ th, comparing nbr _ rsrp with nbr _ rsrp _ th, comparing nbr _ sinr with nbr _ sinr _ th, and comparing nbr _ rsrq with nbr _ rsrq _ th; or the terminal equipment judges according to the measurement control message of the Event B1 or the Event B2, and the judgment comprises the following steps: judging a result obtained by substituting a logic expression into srv _ rsrp and srv _ rsrp _ th, judging a result obtained by substituting a logic expression into srv _ sinr and srv _ sinr _ th, judging a result obtained by substituting a logic expression into srv _ rsrq and srv _ rsrq _ th, judging a result obtained by substituting a logic expression into nbr _ rsrp and nbr _ rsrp _ th, judging a result obtained by substituting a logic expression into nbr _ sinr and nbr _ sinr _ th, and judging a result obtained by substituting a logic expression into nbr _ rsrp and nbr _ rsrq _ th.

In an implementation scenario, a serving cell is an NR cell, and a neighbor cell is an LTE cell; referring to fig. 4, the terminal device performs measurement and determination according to the measurement control message of Event B1 or Event B2, and the measurement and determination can be implemented by the following steps:

step 401, the terminal device measures the NR cell and the LTE adjacent cell to obtain srv _ rsrp, srv _ sinr, srv _ rsrq of the NR cell and nbr _ rsrp, nbr _ sinr, nbr _ rsrq of the LTE adjacent cell.

Step 402, the terminal device obtains threshold values of the NR cell and the LTE neighbor cell to obtain srv _ rsrp _ th, srv _ sinr _ th, srv _ rsrq _ th, nbr _ rsrp _ th, nbr _ sinr _ th, and nbr _ rsrq _ th.

Step 403, the terminal device compares sv _ rsrp with sv _ rsrp _ th, compares sv _ sinr with sv _ sinr _ th, compares sv _ rsrq with sv _ rsrq _ th, compares nbr _ rsrp with nbr _ rsrp _ th, compares nbr _ sinr with nbr _ sinr _ th, compares nbr _ rsrq with nbr _ rsrq _ th, if sv _ rsrp > sv _ rsrp _ th and sv _ sinr > sv _ sinr _ th and srv _ rsrq > sv _ rsrq _ th, and if sbr _ rsrp < nbr _ rsrp _ th or nbr _ sinr < nbr _ srq _ rsrq _ th and nbr _ rsrp < nbr _ rsrp _ th or nbr _ rsrp _ th meet the report prohibition condition, otherwise, the terminal device determines that the reporting event is prohibited.

As can be seen from the above, if the NR serving cell signal is better, the LTE neighbor cell signal quality is worse (i.e. nbr _ rsrp, nbr _ sinr, or nbr _ rsrq of the neighbor cell is less than the threshold), the terminal device does not report or delay reporting of the Event B1/B2; otherwise, reporting the Event B1/B2 normally. Therefore, the problems that the abnormal LTE cell causes RRC connection failure and radio link failure, a Tracking area update request (TAU) is rejected by a network side, call drop, video call fuzzy mosaic, call failure, frequent 4G/5G redirection and the like are caused by switching 5G to a weak signal and seriously interfering the abnormal LTE cell are avoided, the terminal equipment can work on the LTE cell with the signal quality meeting the requirement, and the communication experience of user communication service is improved.

The embodiment of the present application provides a cell switching method, which is applied to a terminal device, where the terminal device resides in a serving cell, and referring to fig. 5, the terminal device may perform step 501, step 502, and step 503; or executing step 501, step 502, step 504, step 505 and step 503 to implement the cell switching method:

step 501, receiving a measurement control message of an event sent by a network device.

Wherein the measurement control message includes at least one measurement object.

Step 502, measure each measurement object to obtain the measurement value of the measurement object.

Step 503, if the reference signal receiving power and the signal to interference plus noise ratio satisfy the reporting condition, sending a measurement report of the event to the network device, and switching from the serving cell to one of at least one neighboring cell in the measurement report through a cell switching process.

In other embodiments of the present application, the measurement value further includes a reference signal received quality, and if the reference signal received power, the signal-to-interference-plus-noise ratio, and the reference signal received quality satisfy the reporting condition, the terminal device may also be triggered to send a measurement report of an event to the network device.

In the embodiment of the application, the terminal device sends the measurement report of the event to the network device in time to trigger the network to switch in time under the condition that the reference signal receiving power and the signal-to-interference plus noise ratio meet the reporting condition, so that the terminal device can be switched to the adjacent cell with better signal quality under the condition that the signal quality of the NR service cell is not good.

And step 504, if the reference signal receiving power and the signal-to-interference plus noise ratio meet the report prohibiting condition, prohibiting or delaying sending a measurement report of an event to the network equipment, wherein the measurement report is used for triggering switching to an adjacent cell.

Step 505, resetting and executing each measurement object until the obtained measurement value meets the report condition, and executing the step in step 503. Here, when the terminal device performs re-measurement and determination on the measurement object until the obtained measurement value meets the reporting condition, the terminal device reports the measurement report of the event to the network device, so that the terminal device can report the measurement report of the event to the network device timely and accurately, so as to ensure that the network device performs cell switching according to the measurement report and better conforms to the actual network quality, and improve the network stability of the communication service.

It should be noted that, for the descriptions of the same steps and the same contents in this embodiment as those in other embodiments, reference may be made to the descriptions in other embodiments, which are not described herein again.

An embodiment of the present application provides a cell switching apparatus, which may be applied to a cell switching method provided in embodiments corresponding to fig. 2 and fig. 5, and as shown in fig. 6, the cell switching apparatus 600 includes:

a receiving unit 601, configured to receive a measurement control message of an event sent by a network device, where the measurement control message includes at least one measurement object;

a measuring unit 602, configured to measure each measurement object to obtain a measurement value of the measurement object, where the measurement value includes a reference signal received power and a signal to interference plus noise ratio of a reference signal;

the processing unit 603 is configured to prohibit or delay sending of a measurement report of an event to the network device if the reference signal received power and the signal-to-interference-plus-noise ratio satisfy a report prohibition condition, where the measurement report is used to trigger switching to the neighboring cell.

In other embodiments of the present application, a measurement object includes a serving cell and at least one neighboring cell, where a reference signal received power and a signal to interference plus noise ratio satisfy a report prohibition condition, and the method includes: the reference signal receiving power of the serving cell is greater than a first threshold value of the serving cell, the signal to interference plus noise ratio of the serving cell is greater than a second threshold value of the serving cell, and the reference signal receiving power of the neighboring cell is less than a third threshold value of the neighboring cell, or the signal to interference plus noise of the neighboring cell is less than a fourth threshold value of the neighboring cell.

In other embodiments of the present application, the measurement value further includes a reference signal received quality; the reference signal received power and the signal to interference plus noise ratio satisfy the report prohibition condition, and the method further comprises the following steps: the reference signal receiving quality of the serving cell is greater than a fifth threshold of the serving cell, or the reference signal receiving quality of the neighboring cell is less than a sixth threshold of the neighboring cell.

In other embodiments of the present application, the processing unit 603 is configured to, if the reference signal received power and the signal-to-interference-plus-noise ratio satisfy the report prohibition condition, perform a reset measurement on each measurement object until the obtained measurement value satisfies the report condition; the cell switching apparatus 600 further comprises a sending unit 604 for sending a measurement report of the event to the network device.

In other embodiments of the present application, the sending unit 604 is configured to send a measurement report of an event to the network device if the reference signal receiving power and the signal-to-interference-plus-noise ratio satisfy a reporting condition; a processing unit 603, configured to switch from the serving cell to one of the at least one neighboring cell in the measurement report through a cell switching procedure.

In other embodiments of the present application, the serving cell is a new air interface cell, and the neighboring cell is a long term evolution cell; or, the serving cell and the neighbor cell are both new air interface cells.

An embodiment of the present application provides a terminal device, where the terminal device resides in a serving cell, and the terminal device may be applied to a cell handover method provided in embodiments corresponding to fig. 2 and fig. 5, and as shown in fig. 7, the terminal device 700 (the terminal device 700 in fig. 7 corresponds to the cell handover apparatus 600 in fig. 6) includes: a processor 701, a memory 702, and a communication bus 703, wherein:

the communication bus 703 is used to enable communication connections between the processor 701 and the memory 702.

Processor 701 is configured to execute a cell handover procedure stored in memory 702 to implement the following steps:

and if the reference signal receiving power and the signal to interference plus noise ratio meet the report prohibiting condition, prohibiting or delaying sending a measurement report of an event to the network equipment, wherein the measurement report is used for triggering switching to the adjacent cell.

In other embodiments of the present application, the measurement object includes a serving cell and at least one neighbor cell; the reference signal received power and the signal to interference plus noise ratio satisfy the report prohibition condition, including:

the reference signal receiving power of the serving cell is greater than a first threshold value of the serving cell, the signal to interference plus noise ratio of the serving cell is greater than a second threshold value of the serving cell, and the reference signal receiving power of the neighboring cell is less than a third threshold value of the neighboring cell, or the signal to interference plus noise of the neighboring cell is less than a fourth threshold value of the neighboring cell.

In other embodiments of the present application, the measurements further include reference signal received quality; the reference signal received power and the signal to interference plus noise ratio satisfy the report prohibition condition, and the method further comprises the following steps:

the reference signal receiving quality of the serving cell is greater than a fifth threshold of the serving cell, or the reference signal receiving quality of the neighboring cell is less than a sixth threshold of the neighboring cell.

In other embodiments of the present application, the processor 701 is configured to execute a cell handover procedure stored in the memory 702 to implement the following steps: and if the reference signal receiving power and the signal-to-interference plus noise ratio meet the report prohibiting condition, resetting and executing measurement of each measurement object until the obtained measurement value meets the report condition, and sending a measurement report of an event to the network equipment.

In other embodiments of the present application, the processor 701 is configured to execute the cell handover procedure stored in the memory 702 to implement the following steps: and if the reference signal receiving power and the signal-to-interference plus noise ratio meet the reporting condition, sending a measurement report of the event to the network equipment, and switching from the serving cell to one cell in at least one adjacent cell in the measurement report through a cell switching process.

Embodiments of the application provide a computer storage medium storing one or more programs, the one or more programs being executable by one or more processors to perform the steps of:

measuring each measuring object to obtain a measured value of the measuring object, wherein the measured value comprises reference signal receiving power and a signal to interference plus noise ratio of a reference signal;

and if the reference signal receiving power and the signal-to-interference plus noise ratio meet the report prohibiting condition, prohibiting or delaying sending a measurement report of an event to the network equipment, wherein the measurement report is used for triggering switching to the adjacent cell.

In other embodiments of the present application, the measurement object includes a serving cell and at least one neighbor cell; the one or more programs are executable by the one or more processors and further implement the steps of:

In other embodiments of the present application, the measurements further include reference signal received quality; the one or more programs are executable by the one or more processors and further implement the steps of:

and if the reference signal receiving power and the signal-to-interference plus noise ratio meet the report prohibiting condition, resetting and executing measurement of each measurement object until the obtained measurement value meets the report condition, and sending a measurement report of an event to the network equipment.

and if the reference signal receiving power and the signal to interference plus noise ratio meet the reporting condition, sending a measurement report of the event to the network equipment, and switching from the serving cell to one cell in at least one adjacent cell in the measurement report through a cell switching process.

It should be noted that, for the description of the same steps and the same contents in this embodiment as those in other embodiments, reference may be made to the description in the other embodiments, which is not repeated herein.

The computer storage medium/Memory may be a Read Only Memory (ROM), a Programmable Read Only Memory (PROM), an Erasable Programmable Read Only Memory (EPROM), an Electrically Erasable Programmable Read Only Memory (EEPROM), a magnetic Random Access Memory (FRAM), a Flash Memory (Flash Memory), a magnetic surface Memory, an optical Disc, or a Compact Disc Read-Only Memory (CD-ROM), and the like; but may also be various terminals such as mobile phones, computers, tablet devices, personal digital assistants, etc., that include one or any combination of the above-mentioned memories.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described device embodiments are merely illustrative, for example, the division of a unit is only one logical function division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed on a plurality of network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, all functional units in the embodiments of the present application may be integrated into one processing module, or each unit may be separately regarded as one unit, or two or more units may be integrated into one unit; the integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit. Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: various media that can store program codes, such as a removable Memory device, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The methods disclosed in the several method embodiments provided in the present application may be combined arbitrarily without conflict to obtain new method embodiments.

The features disclosed in the several product embodiments presented in this application can be combined arbitrarily, without conflict, to arrive at new product embodiments.

The features disclosed in the several method or apparatus embodiments provided herein may be combined in any combination to arrive at a new method or apparatus embodiment without conflict.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A cell switching method is applied to a terminal device, wherein the terminal device resides in a serving cell, and the method comprises the following steps:

2. The method of claim 1, wherein the measurement object comprises the serving cell and at least one neighbor cell; the reference signal received power and the signal to interference plus noise ratio satisfying a report prohibition condition include:

the reference signal received power of the serving cell is greater than a first threshold of the serving cell, and the signal to interference plus noise ratio of the serving cell is greater than a second threshold of the serving cell, and the reference signal received power of an adjacent cell is less than a third threshold of the adjacent cell, or the signal to interference plus noise of the adjacent cell is less than a fourth threshold of the adjacent cell.

3. The method of claim 2, wherein the measurements further comprise reference signal received quality; the reference signal received power and the signal to interference plus noise ratio satisfy a report prohibition condition, and the method further includes:

4. The method of claim 1, wherein if the RSRP and the SINR satisfy the barring condition, the method resets each of the measurement objects to perform measurement until a measurement result satisfies the barring condition, and sends the measurement report of the event to the network device.

5. The method according to any of claims 1 to 4, wherein if the reference signal received power and the signal to interference plus noise ratio satisfy a reporting condition, the measurement report of the event is sent to the network device, and the serving cell is handed over to one of at least one neighbor cell in the measurement report through a cell handover procedure.

6. The method according to any one of claims 1 to 5, wherein each measurement object is represented by a cell identifier or a frequency point in a cell.

7. The method according to any of claims 1 to 5, wherein the serving cell is a new air interface cell and the neighbor cell is a long term evolution cell; or, the serving cell and the neighboring cell are both new air interface cells.

8. A cell switching apparatus, comprising:

9. A terminal device, characterized in that the terminal device comprises: a processor, a memory, and a communication bus;

the processor is configured to execute a cell handover procedure stored in the memory to implement the steps of the cell handover method according to any of claims 1 to 7.

10. A storage medium storing one or more programs, the one or more programs being executable by one or more processors to implement the steps of the cell handover method of any one of claims 1 to 7.