CN114916026B

CN114916026B - Cell switching method and device and terminal equipment

Info

Publication number: CN114916026B
Application number: CN202210752504.3A
Authority: CN
Inventors: 张昊天
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2022-06-29
Filing date: 2022-06-29
Publication date: 2023-10-13
Anticipated expiration: 2042-06-29
Also published as: CN114916026A

Abstract

The application discloses a cell switching method and device and terminal equipment, and relates to the technical field of communication; the method comprises the following steps: receiving a plurality of condition switching configuration information under the condition that the first condition is satisfied; before the second condition is met, comprehensively measuring one adjacent cell corresponding to each of the plurality of condition switching configuration information to determine a target adjacent cell; determining a cell switching strategy according to the mobile speed state and the channel quality state, wherein the cell switching strategy is one of the following: and continuing to comprehensively measure the channel quality of the target adjacent cell before the second condition is met, ending the comprehensive measurement and switching from the serving cell to the target adjacent cell after the second condition is met, thereby improving the accuracy of cell switching decision in the cell switching process so that the finally decided target adjacent cell can be more beneficial to ensuring the subsequent communication quality of the terminal equipment.

Description

Cell switching method and device and terminal equipment

Technical Field

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

Background

Standard protocols specified by the third generation partnership project organization (3rd Generation Partnership Project,3GPP) introduce a conditional switch (Conditional Handover, CHO) mechanism. In the CHO mechanism, the network will send CHO configuration (CHO configuration) information to some neighboring cells of the serving cell where the terminal device is located, where the CHO configuration information may include information required for configuring the terminal device to switch from the serving cell to its corresponding neighboring cell.

In the case that the channel quality of a neighboring cell (i.e., a target neighboring cell) corresponding to a certain CHO configuration information meets a condition, the terminal device immediately switches from the serving cell to the target neighboring cell, and deletes CHO configuration information of other neighboring cells. It can be seen that in CHO mechanisms, the terminal device may immediately handover to the target neighboring cell if the conditions are met. Although the channel quality of the target neighboring cell satisfies the condition, there may be a case that the target neighboring cell does not necessarily ensure the subsequent communication quality of the terminal device, or that the target neighboring cell is not the best neighboring cell in ensuring the subsequent communication quality of the terminal device, so that the cell switching decision of the immediate switching may bring a certain disadvantage.

Therefore, how to improve the accuracy of cell switching decision, so that the target adjacent cell finally decided can be more beneficial to ensuring the subsequent communication quality of the terminal equipment, and further research is needed.

Disclosure of Invention

The application provides a cell switching method and device and terminal equipment, which aim to solve the problem that how to improve the accuracy of cell switching decision in the cell switching process so that a target adjacent cell finally decided can be more beneficial to ensuring the subsequent communication quality of the terminal equipment.

In a first aspect, the present application is a cell handover method, including:

receiving a plurality of condition switching configuration information under the condition that a first condition is met, wherein the first condition is a first event used for triggering terminal equipment to report a measurement report, the first event is that the channel quality of a service cell is larger than or equal to a first threshold value, the measurement report is used for configuring a plurality of condition switching configuration information by a network, the condition switching configuration information comprises information required for configuring the terminal equipment to switch from the service cell to a neighboring cell, and each of the plurality of condition switching configuration information corresponds to one neighboring cell;

Before a second condition is met, performing comprehensive measurement on one adjacent cell corresponding to each of the plurality of condition switching configuration information to determine a target adjacent cell, wherein the second condition is a second event for triggering the terminal equipment to end the comprehensive measurement and switch out the service cell, the second event is that the channel quality of the service cell is greater than or equal to a second threshold, and the second threshold is smaller than the first threshold;

determining a cell switching strategy according to the moving speed state and the channel quality state, wherein the cell switching strategy is one of the following steps: continuing to perform the integrated measurement on the channel quality of the target neighbor cell before the second condition is satisfied, ending the integrated measurement and switching from the serving cell to the target neighbor cell after the second condition is satisfied, the movement speed state indicates a movement speed of the terminal device in the serving cell before the second condition is satisfied, and the channel quality state indicates a channel quality change condition of the serving cell before the second condition is satisfied.

Therefore, the application realizes the network configuration of a plurality of adjacent cells of the service cell and the corresponding condition switching configuration information of the adjacent cells, namely a plurality of condition switching configuration information, through the measurement report under the condition that the first condition is satisfied; in order to avoid the continuous comprehensive measurement, the second condition is introduced, so that only one adjacent cell corresponding to each of the plurality of condition switching configuration information is required to be comprehensively measured before the second condition is met to determine the target adjacent cell, the accuracy of the measured adjacent cell is improved through the comprehensive measurement, and the finally determined target adjacent cell can be more beneficial to ensuring the subsequent communication quality of the terminal equipment; by introducing the mobile speed state and the channel quality state, a plurality of different cell switching strategies can be determined according to the mobile speed state and the channel quality state, and the cell switching strategies can represent whether to continue comprehensive measurement before the second condition is met, whether to finish the comprehensive measurement in advance for switching or not to finish the comprehensive measurement in advance for switching, so that the flexibility of cell switching is improved. If the cell switching strategy is to continue to comprehensively measure the channel quality of the target adjacent cell, the measurement accuracy is further improved through comprehensive measurement; if the cell switching strategy is to finish the comprehensive measurement and switch from the serving cell to the target adjacent cell before the second condition is met, implementing the cell switching in advance to improve the switching efficiency; and if the cell switching strategy is that the comprehensive measurement is ended after the second condition is met and the cell is switched from the serving cell to the target adjacent cell, the cell switching is realized.

A second aspect is a cell switching apparatus of the present application, including:

a receiving unit, configured to receive a plurality of condition switching configuration information when a first condition is satisfied, where the first condition is a first event for triggering a terminal device to report a measurement report, where the first event is that channel quality of a serving cell is greater than or equal to a first threshold, the measurement report is used for configuring a plurality of condition switching configuration information by a network, the condition switching configuration information includes information required for configuring the terminal device to switch from the serving cell to a neighboring cell, and each of the plurality of condition switching configuration information corresponds to one neighboring cell;

a measurement unit, configured to perform comprehensive measurement on one neighboring cell corresponding to each of the plurality of condition switching configuration information before a second condition is satisfied, where the second condition is a second event for triggering the terminal device to end the comprehensive measurement and switch out of the serving cell, and the second event is that a channel quality of the serving cell is greater than or equal to a second threshold, where the second threshold is smaller than the first threshold;

A determining unit, configured to determine a cell switching policy according to a mobile speed state and a channel quality state, where the cell switching policy is one of the following: continuing to perform the integrated measurement on the channel quality of the target neighbor cell before the second condition is satisfied, ending the integrated measurement and switching from the serving cell to the target neighbor cell after the second condition is satisfied, the movement speed state indicates a movement speed of the terminal device in the serving cell before the second condition is satisfied, and the channel quality state indicates a channel quality change condition of the serving cell before the second condition is satisfied.

In a third aspect, the steps in the method as designed in the first aspect are applied to a terminal device or a terminal device.

In a fourth aspect, the present application is a terminal device, which includes a processor, a memory, and a computer program or instructions stored on the memory, where the processor executes the computer program or instructions to implement the steps in the method designed in the first aspect.

In a fifth aspect, the present application is a chip comprising a processor, wherein the processor performs the steps in the method designed in the first aspect or the second aspect.

In a sixth aspect, the present application is a chip module, including a transceiver component and a chip, where the chip includes a processor, and the processor executes the steps in the method designed in the first aspect or the second aspect.

A seventh aspect is a computer readable storage medium of the present application, in which a computer program or instructions are stored which, when executed, implement the steps in the method devised in the first or second aspect above.

An eighth aspect is a computer program product according to the application, comprising a computer program or instructions which, when executed, implement the steps of the method devised in the first or second aspect.

A ninth aspect is a communication system of the present application, including the terminal device in the seventh aspect and the network device in the eighth aspect.

The technical effects of the second to ninth aspects may be seen in the technical effects of the first aspect, and are not described here again.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings used in the description of the embodiments or the prior art will be briefly described below.

FIG. 1 is a schematic diagram of a communication system architecture according to an embodiment of the present application;

fig. 2 is a schematic flow chart of a cell handover method according to an embodiment of the application;

fig. 3 is a functional unit block diagram of a cell switching apparatus according to an embodiment of the present application;

fig. 4 is a block diagram showing functional units of a cell switching apparatus according to still another embodiment of the present application;

fig. 5 is a schematic structural diagram of a terminal device according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a network device according to an embodiment of the application.

Detailed Description

It should be understood that the terms "first," "second," and the like, as used in embodiments of the present application, are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, software, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In the embodiment of the application, "and/or" describes the association relation of the association objects, which means that three relations can exist. For example, a and/or B may represent three cases: a alone; both A and B are present; b alone. Wherein A, B can be singular or plural.

In the embodiment of the present application, the symbol "/" may indicate that the associated object is an or relationship. In addition, the symbol "/" may also denote a divisor, i.e. performing a division operation. For example, A/B may represent A divided by B.

"at least one" or the like in the embodiments of the present application means any combination of these items, including any combination of single item(s) or plural items(s), meaning one or more, and plural means two or more. For example, at least one (one) of a, b or c may represent the following seven cases: a, b, c, a and b, a and c, b and c, a, b and c. Wherein each of a, b, c may be an element or a set comprising one or more elements.

The 'equal' in the embodiment of the application can be used with the greater than the adopted technical scheme, can also be used with the lesser than the adopted technical scheme. When the combination is equal to or greater than the combination, the combination is not less than the combination; when the value is equal to or smaller than that used together, the value is not larger than that used together.

In the embodiments of the present application, "of", "corresponding" and "corresponding" may be used in combination. It should be noted that the meaning of what is meant is consistent when de-emphasizing the differences.

The "connection" in the embodiments of the present application refers to various connection modes such as direct connection or indirect connection, so as to implement communication between devices, which is not limited in any way.

The "network" in the embodiment of the present application may be expressed as the same concept as the "system", i.e. the communication system is a communication network.

The following describes related content, concepts, meanings, technical problems, technical schemes, beneficial effects and the like related to the embodiment of the application.

1. Communication system, terminal device and network device

1. Communication system

The technical scheme of the embodiment of the application can be applied to various communication systems, such as: general packet Radio service (General Packet Radio Service, GPRS), long term evolution (Long Term Evolution, LTE) system, long term evolution advanced (Advanced Long Term Evolution, LTE-a) system, new Radio (NR) system, evolution system of NR system, LTE-based Access to Unlicensed Spectrum on unlicensed spectrum (LTE-U) system, NR-based Access to Unlicensed Spectrum on unlicensed spectrum (NR-U) system, non-terrestrial communication network (Non-Terrestrial Networks, NTN) system, universal mobile communication system (Universal Mobile Telecommunication System, UMTS), wireless local area network (Wireless Local Area Networks, WLAN), wireless fidelity (Wireless Fidelity, wi-Fi), 6th Generation (6 th-Generation, 6G) communication system, or other communication system, etc.

It should be noted that, the number of connections supported by the conventional communication system is limited and easy to implement. However, with the development of communication technology, the communication system may support not only a conventional communication system, but also, for example, a device-to-device (D2D) communication, a machine-to-machine (machine to machine, M2M) communication, a machine type communication (machine type communication, MTC), an inter-vehicle (vehicle to vehicle, V2V) communication, an internet of vehicles (vehicle to everything, V2X) communication, a narrowband internet of things (narrow band internet of things, NB-IoT) communication, and the like, so the technical solution of the embodiment of the present application may also be applied to the above-described communication system.

In addition, the technical scheme of the embodiment of the application can be applied to beamforming (beamforming), carrier aggregation (carrier aggregation, CA), dual-connection (dual connectivity, DC), independent (SA) deployment scenarios and the like.

In the embodiment of the present application, the frequency spectrum used for communication between the terminal device and the network device, or the frequency spectrum used for communication between the terminal device and the terminal device may be an authorized frequency spectrum or an unauthorized frequency spectrum, which is not limited. In addition, unlicensed spectrum may be understood as shared spectrum, and licensed spectrum may be understood as unshared spectrum.

Since the embodiments of the present application are described in connection with terminal devices and network devices, the terminal devices and network devices involved will be specifically described below.

2. Terminal equipment

In the embodiment of the present application, the terminal device may be a device with a transceiver function, which may also be referred to as a terminal, a User Equipment (UE), a remote terminal device (remote UE), a relay device (relay UE), an access terminal device, a subscriber unit, a subscriber station, a mobile station, a remote station, a mobile device, a user terminal device, an intelligent terminal device, a wireless communication device, a user agent, or a user equipment. The relay device is a terminal device capable of providing a relay service to other terminal devices (including a remote terminal device).

In some possible implementations, the terminal device may be deployed on land, including indoors or outdoors, hand-held, wearable, or vehicle-mounted; can be deployed on the water surface (such as ships, etc.); may be deployed in the air (e.g., aircraft, balloons, satellites, etc.).

In some possible implementations, the terminal device may be a mobile phone (mobile phone), a tablet (Pad), a computer with wireless transceiving functionality, a Virtual Reality (VR) terminal device, an augmented reality (augmented reality, AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in unmanned autopilot, a wireless terminal device in telemedicine (remote media), a wireless terminal device in smart grid (smart grid), a wireless terminal device in transportation security (transportation safety), a wireless terminal device in smart city (smart city), or a wireless terminal device in smart home (smart home), etc.

In addition, the terminal device may also be a cellular phone, a cordless phone, a session initiation protocol (session initiation protocol, SIP) phone, a wireless local loop (wireless local loop, WLL) station, a personal digital assistant (personal digital assistant, PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a next generation communication system (e.g., NR communication system, 6G communication system) or a terminal device in a future evolved public land mobile communication network (public land mobile network, PLMN), etc., without being limited in particular.

In some possible implementations, the terminal device may include means for wireless communication functions, such as a chip system, a chip module. By way of example, the system-on-chip may include a chip, and may include other discrete devices.

3. Network equipment

In the embodiment of the present application, the network device may be a device with a transceiver function, which is used for communication with the terminal device. For example, the network device may be responsible for radio resource management (radio resource management, RRM), quality of service (quality of service, qoS) management, data compression and encryption, data transceiving, etc. on the air side. The network device may be a Base Station (BS) in a communication system or a device deployed in a radio access network (radio access network, RAN) for providing wireless communication functions. For example, an evolved node B (evolutional node B, eNB or eNodeB) in the LTE communication system, a next generation evolved node B (next generation evolved node B, ng-eNB) in the NR communication system, a next generation node B (next generation node B, gNB) in the NR communication system, a Master Node (MN) in the dual connectivity architecture, a second node or Secondary Node (SN) in the dual connectivity architecture, and the like are not particularly limited thereto.

In some possible implementations, the network device may also be a device in a Core Network (CN), such as an access and mobility management function (access and mobility management function, AMF), a user plane function (user plane function, UPF), etc.; but also Access Points (APs) in WLAN, relay stations, communication devices in future evolved PLMN networks, communication devices in NTN networks, etc.

In some possible implementations, the network device may include a device, such as a system-on-chip, a chip module, having means to provide wireless communication functionality for the terminal device. The chip system may include a chip, for example, or may include other discrete devices.

In some possible implementations, the network device may communicate with an internet protocol (Internet Protocol, IP) network. Such as the internet, a private IP network or other data network, etc.

In some possible implementations, the network device may be a single node to implement the functionality of the base station or the network device may include two or more separate nodes to implement the functionality of the base station. For example, network devices include Centralized Units (CUs) and Distributed Units (DUs), such as gNB-CUs and gNB-DUs. Further, in other embodiments of the application, the network device may further comprise an active antenna unit (active antenna unit, AAU). Wherein a CU implements a portion of the functions of the network device and a DU implements another portion of the functions of the network device. For example, a CU is responsible for handling non-real-time protocols and services, implementing the functions of a radio resource control (radio resource control, RRC) layer, a service data adaptation (service data adaptation protocol, SDAP) layer, and a packet data convergence (packet data convergence protocol, PDCP) layer. The DUs are responsible for handling physical layer protocols and real-time services, implementing the functions of the radio link control (radio link control, RLC), medium access control (medium access control, MAC) and Physical (PHY) layers. In addition, the AAU can realize partial physical layer processing function, radio frequency processing and related functions of the active antenna. Since the information of the RRC layer eventually becomes or is converted from the information of the PHY layer, in this network deployment, higher layer signaling (e.g., RRC signaling) may be considered to be transmitted by the DU or transmitted by both the DU and the AAU. It is understood that the network device may include at least one of CU, DU, AAU. In addition, the CU may be divided into network devices in the RAN, or may be divided into network devices in the core network, which is not particularly limited.

In some possible implementations, the network device may be any one of multiple sites that perform coherent cooperative transmission with the terminal device, or other sites outside the multiple sites, or other network devices that perform network communication with the terminal device, which is not limited specifically. The multi-site coherent joint transmission may be a multi-site coherent joint transmission, or different data belonging to the same physical downlink shared channel (Physical Downlink Shared Channel, PDSCH) are sent from different sites to the terminal device, or the multiple sites are virtualized into one site for transmission, and names with the same meaning specified in other standards are also applicable to the present application, i.e. the present application is not limited to the names of these parameters. The stations in the multi-station coherent joint transmission may be remote radio heads (Remote Radio Head, RRH), transmission receiving points (transmission and reception point, TRP), network devices, and the like, which are not particularly limited.

In some possible implementations, the network device may be any one of multiple sites that perform incoherent cooperative transmission with the terminal device, or other sites outside the multiple sites, or other network devices that perform network communication with the terminal device, which is not limited specifically. The multi-site incoherent joint transmission may be a multi-site joint incoherent transmission, or different data belonging to the same PDSCH are transmitted from different sites to the terminal device, and names with the same meaning specified in other standards are also applicable to the present application, i.e. the present application is not limited to the names of these parameters. The stations in the multi-station incoherent joint transmission may be RRHs, TRPs, network devices, etc., which are not particularly limited.

In some possible implementations, the network device may have a mobile nature, e.g., the network device may be a mobile device. Alternatively, the network device may be a satellite, a balloon station. For example, the satellite may be a Low Earth Orbit (LEO) satellite, a medium earth orbit (medium earth orbit, MEO) satellite, a geosynchronous orbit (geostationary earth orbit, GEO) satellite, a high elliptical orbit (high elliptical orbit, HEO) satellite, or the like. Alternatively, the network device may be a base station disposed on land, in a water area, or the like.

In some possible implementations, the network device may serve a cell, and terminal devices in the cell may communicate with the network device over transmission resources (e.g., spectrum resources). The cells may be macro cells (macro cells), small cells (small cells), urban cells (metro cells), micro cells (micro cells), pico cells (pico cells), femto cells (femto cells), and the like.

4. Description of the examples

An exemplary description of a communication system according to an embodiment of the present application is provided below.

Exemplary, a network architecture of a communication system according to an embodiment of the present application may refer to fig. 1. As shown in fig. 1, communication system 10 may include a network device 110 and a terminal device 120. The terminal device 120 may communicate with the network device 110 wirelessly.

Fig. 1 is merely an illustration of a network architecture of a communication system, and the network architecture of the communication system according to the embodiment of the present application is not limited thereto. For example, in the embodiment of the present application, a server or other devices may be further included in the communication system. For another example, in an embodiment of the present application, a communication system may include a plurality of network devices and/or a plurality of terminal devices.

2. Conditional switch (Conditional Handover, CHO) mechanism

In a communication system, after a terminal device accesses a serving cell, a network device determines some neighboring cells of the serving cell when certain conditions are met, configures CHO configuration information corresponding to each of the neighboring cells to the terminal device through radio resource control (Radio Resource Control, RRC) messages, wherein the CHO configuration information may include information required for configuring the terminal device to switch from the serving cell to the corresponding neighboring cell, and associates measurement identifiers (measurement IDs) corresponding to the CHO configuration information, the measurement IDs may be associated with measurement objects (Measurement Object, MO) and measurement reports (Measurement Report, MR), the MO may indicate frequency points of the neighboring cells, IDs of the neighboring cells, and the like, and the MR includes conditions required to be met for switching to the neighboring cells, and the like. When the conditions in the MR are met, the terminal device does not send a measurement report to the network, but automatically switches to the target neighbor cell.

It should be noted that, one cell will generally have 1 or 2 neighboring cells with the same frequency, and 1 or 2 neighboring cells with different frequencies. With deployment and completeness of the communication system, overlapping coverage will be performed in the same area later, so after the terminal device accesses to the service cell, the network device will configure some neighboring cells of the service cell and CHO configuration information corresponding to each of these neighboring cells for the terminal device.

3. An example illustration of a cell switching method

Based on the above, the application realizes that the network configures a plurality of adjacent cells of the service cell and the corresponding condition switching configuration information of the adjacent cells, namely a plurality of condition switching configuration information, by the measurement report under the condition that the first condition is satisfied; in order to avoid the continuous comprehensive measurement, the second condition is introduced, so that only one adjacent cell corresponding to each of the plurality of condition switching configuration information is required to be comprehensively measured before the second condition is met to determine the target adjacent cell, the accuracy of the measured adjacent cell is improved through the comprehensive measurement, and the finally determined target adjacent cell can be more beneficial to ensuring the subsequent communication quality of the terminal equipment; by introducing the mobile speed state and the channel quality state, a plurality of different cell switching strategies can be determined according to the mobile speed state and the channel quality state, and the cell switching strategies can represent whether to continue comprehensive measurement before the second condition is met, whether to finish the comprehensive measurement in advance for switching or not to finish the comprehensive measurement in advance for switching, so that the flexibility of cell switching is improved. If the cell switching strategy is to continue to comprehensively measure the channel quality of the target adjacent cell, the measurement accuracy is further improved through comprehensive measurement; if the cell switching strategy is to finish the comprehensive measurement and switch from the serving cell to the target adjacent cell before the second condition is met, implementing the cell switching in advance to improve the switching efficiency; and if the cell switching strategy is that the comprehensive measurement is ended after the second condition is met and the cell is switched from the serving cell to the target adjacent cell, the cell switching is realized.

An example of a cell handover method according to an embodiment of the present application is described below by taking an interaction between a network device and a terminal device as an example.

It should be noted that, the network device may be a chip, a chip module, a communication module, or the like, and the terminal device may be a chip, a chip module, a communication module, or the like. That is, the method is applied to a network device or a terminal device, which is not particularly limited.

Fig. 2 is a schematic flow chart of a cell handover method according to an embodiment of the present application, which specifically includes the following steps:

s210, when the first condition is satisfied, the network device sends a plurality of condition switching configuration information.

Correspondingly, the terminal equipment receives the plurality of condition switching configuration information.

It should be noted that, when the first condition is satisfied, the terminal device may report a measurement report to the network device, so that the network device determines, according to the measurement report, a plurality of neighboring cells of the serving cell, and condition switching configuration information corresponding to each of the neighboring cells, and sends the plurality of condition switching configuration information to the terminal device.

1. First condition, first event, measurement report, and conditional switch configuration information

The first condition may be a first event for triggering the terminal device to report the measurement report. It should be noted that the first condition may be described by other terms, which are not limited thereto.

The first event may be that the channel quality of the serving cell is greater than or equal to a first threshold (threshold). It should be noted that the first threshold may be a threshold of channel quality, such as a threshold of reference signal received power (Reference Signal Received Power, RSRP). In addition, the first event (first threshold) may also be described in other terms, which are not limiting.

Measurement reports may be used for the network to configure a plurality of conditional handover configuration information.

The conditional handover configuration information may contain information required for configuring the terminal device to handover from the serving cell to the neighboring cell. Wherein each of the plurality of conditional handover configuration information corresponds to a respective one of the neighboring cells.

For example, the neighboring cells of the serving cell in which the terminal device is located are cell 1, cell 2, and cell 3. After the terminal equipment reports the measurement report to the network equipment, the network equipment determines the condition switching configuration information corresponding to the cell 1, the condition switching configuration information corresponding to the cell 2 and the condition switching configuration information corresponding to the cell 3 according to the measurement report. The condition switching configuration information corresponding to the cell 1 is used for configuring the terminal equipment to switch from the service cell to the cell 1, the condition switching configuration information corresponding to the cell 2 is used for configuring the terminal equipment to switch from the service cell to the cell 2, and the condition switching configuration information corresponding to the cell 3 is used for configuring the terminal equipment to switch from the service cell to the cell 3.

In some possible implementations, the first condition (first event/first threshold) may be network configured, may be preconfigured, may be protocol specified.

For example, using network configuration as an example, the network device may configure the first condition (first event/first threshold) to the terminal device through higher layer signaling (e.g., measurement configuration information in RRC signaling).

In some possible implementations, the plurality of conditional handover configuration information may be configured to the terminal device by higher layer signaling.

In summary, the following description will be given by way of example, after the terminal device accesses the serving cell, the network device corresponding to the serving cell configures measurement configuration information to the terminal device through higher layer signaling (such as measurement configuration (measConfig) cells carried by RRC connection reconfiguration (RRC Connection Reconfigurtion) message, etc.); the Measurement control information may include a Measurement object, a reporting configuration (Reporting Configuration), a Measurement identifier, a Measurement Gap (Measurement Gap), and the like, that is, the Measurement configuration information may include (carry) a first event (i.e., a first condition) for triggering the terminal device to report a Measurement report. That is, the first condition (first event/first threshold) is configured to the terminal device by the higher layer signaling. Then, the terminal device measures the channel quality of the serving cell by measuring the configuration information. When the measured channel quality of the serving cell meets the first condition, the terminal device fills the measurement result into a measurement report and reports the measurement report. That is, the measurement report trigger is an event trigger. And finally, the network equipment configures a plurality of condition switching configuration information for the terminal equipment according to the measurement report.

2. Channel quality

In some possible implementations, the channel quality may include at least one of RSRP, reference signal received quality (Reference Signal Receiving Quality, RSRQ), signal to interference plus noise ratio (Signal to Interference plus Noise Ratio, SINR), received signal strength indication (Received Signal Strength Indication, RSSI).

It should be noted that the channel quality of the serving cell may also be used to represent the distance between the geographical location of the terminal device and the central geographical location of the serving cell. If the channel quality of the service cell is larger, the distance between the geographic position of the terminal equipment and the central geographic position of the service cell is closer, and the service cell can ensure the communication quality of the terminal equipment; if the channel quality of the serving cell is smaller, the distance between the geographic position of the terminal device and the central geographic position of the serving cell is further, and the serving cell cannot guarantee the communication quality of the terminal device.

3. First threshold value

Since the first threshold may be a threshold of a channel quality of the serving cell, the first threshold indicates that a distance between a geographical location of the current terminal device and a central geographical location of the serving cell has begun to become far, a communication quality has begun to become poor, possibly in an edge area of the serving cell, which edge area has begun to be adjacent to a plurality of neighboring cells. At this time, the terminal device needs to report the measurement report, so that the network configures the terminal device with the conditional handover configuration information for accessing the neighboring cells.

S220, before the second condition is met, the terminal equipment comprehensively measures each corresponding adjacent cell in the plurality of condition switching configuration information to determine the target adjacent cell.

Before the second condition is satisfied, the terminal device may perform comprehensive measurement (where the comprehensive measurement is used to improve accuracy of the measured neighboring cell) on one neighboring cell corresponding to each of the plurality of condition switching configuration information to determine the target neighboring cell, so that accuracy of the measured neighboring cell is improved through the comprehensive measurement, and the finally determined target neighboring cell can be more beneficial to ensuring subsequent communication quality of the terminal device.

4. Second condition, second event

The second condition may be a second event for triggering the terminal device to end the integrated measurement and to switch out of the serving cell. It should be noted that the second condition may also be described by other terms, which are not limited thereto.

The second event may be that the channel quality of the serving cell is greater than or equal to a second threshold, the second threshold being less than the first threshold.

It should be noted that the second threshold may be a threshold of channel quality, and the first threshold and the second threshold are the same channel quality type, for example, the first threshold is a threshold of RSRP, and the second threshold is also a threshold of RSRP. In addition, the second event (second threshold) may also be described in other terms, which are not limiting.

In addition, in the conventional condition switching process, the network only needs to configure a plurality of condition switching configuration information for the terminal equipment, and the terminal equipment measures the channel quality of a plurality of adjacent cells and performs autonomous switching when the channel quality of a certain adjacent cell meets the condition. The application does not simply carry out channel quality test, but carries out comprehensive test, but the comprehensive test can occupy more resources. In order to avoid the terminal equipment from performing comprehensive test all the time, the application introduces the second condition, so that the comprehensive measurement is only needed to be performed on one adjacent cell corresponding to each of the plurality of condition switching configuration information before the second condition is met so as to determine the target adjacent cell.

In some possible implementations, the second condition (second event/second threshold) may be network configured, may be preconfigured, may be protocol specified.

For example, taking network configuration as an example, the network device may switch configuration information carrying (second event/second threshold) at a plurality of conditions, thereby implementing the network configuration second condition (second event/second threshold).

5. Second threshold value

Since the second threshold may be a threshold of a channel quality of the serving cell, the second threshold indicates that a distance between a geographical location of the current terminal device and a central geographical location of the serving cell is already far, and communication quality cannot be guaranteed. The terminal device needs to be handed over from the serving cell to the neighboring cell.

6. Comprehensive measurement

In some possible implementations, the integrated measurement may include measuring RSRP, RSRQ, and SINR of the neighboring cells.

It should be noted that, at present, it is generally only the RSRP of the neighboring cell that is measured, and the target neighboring cell determined by measuring the RSRP may not be the best neighboring cell in ensuring the subsequent communication quality of the terminal device. For this purpose, the application considers that the RSRP, the RSRQ and the SINR of the adjacent cells are all measured, and realizes the comprehensive measurement of the adjacent cells so as to improve the accuracy of measuring the adjacent cells by measuring the RSRP, the RSRQ and the SINR.

7. How to integrate measurements to determine target neighbor cells

In some possible implementations, the step of performing integrated measurement on one neighboring cell corresponding to each of the plurality of conditional handover configuration information in S220 to determine the target neighboring cell may include the steps of:

measuring RSRP, RSRQ, SINR of each of the plurality of conditional access configuration information corresponding to one of the neighboring cells;

performing weighted average on RSRP, RSRQ, SINR of each corresponding adjacent cell to obtain a comprehensive measurement result of each corresponding adjacent cell;

And taking one adjacent cell corresponding to the largest item in the comprehensive measurement results of one adjacent cell corresponding to each individual as a target adjacent cell, or taking one adjacent cell corresponding to any item which is larger than the preset comprehensive measurement results in the comprehensive measurement results of one adjacent cell corresponding to each individual as the target adjacent cell.

It should be noted that, the present application may measure RSRP, RSRQ, SINR of each neighboring cell, and perform weighted average on RSRP, RSRQ, SINR obtained by the measurement to obtain a comprehensive measurement result of each neighboring cell. The targeting to the neighboring cell is then determined by two means:

one way is: and taking one adjacent cell corresponding to the maximum term in the comprehensive measurement results of each adjacent cell as a target adjacent cell.

For example, in the case that the neighboring cells of the serving cell where the terminal device is located have cell 1, cell 2 and cell 3, the terminal measures RSRP, RSRQ, SINR of cell 1, cell 2 and cell 3, respectively, and performs weighted averaging to obtain the integrated measurement result of cell 1, the integrated measurement result of cell 2 and the integrated measurement result of cell 3. If the largest term of the integrated measurement results of cell 1 among the three integrated measurement results is set as the target neighboring cell, cell 1 is set as the target neighboring cell.

Compared with single measurement RSPR or RSRQ, the method and the device can enable the comprehensive measurement result obtained through calculation to reflect channel quality more accurately by means of weighted average of RSRP, RSRQ, SINR, and finally make a decision on the target adjacent cell by utilizing the principle of the maximum term, so that the finally decided target adjacent cell can be more beneficial to guaranteeing the subsequent communication quality of the terminal equipment.

Another way is: and taking one adjacent cell corresponding to one of the comprehensive measurement results of each adjacent cell which is larger than the plurality of items in the preset comprehensive measurement results as a target adjacent cell. The preset integrated measurement result may be network configured or preconfigured.

For example, in the case that the neighboring cells of the serving cell where the terminal device is located have cell 1, cell 2 and cell 3, the terminal measures RSRP, RSRQ, SINR of cell 1, cell 2 and cell 3, respectively, and performs weighted averaging to obtain the integrated measurement result of cell 1, the integrated measurement result of cell 2 and the integrated measurement result of cell 3. If the comprehensive measurement result of the cell 1 and the comprehensive measurement result of the cell 2 in the three comprehensive measurement results are both larger than the preset comprehensive measurement result, the terminal equipment selects one adjacent cell from the cell 1 and the cell 2 as a target adjacent cell.

Compared with single measurement RSPR or RSRQ, the method can enable the comprehensive measurement result obtained through calculation to reflect the channel quality more accurately by carrying out weighted average on RSRP, RSRQ, SINR. Then, a plurality of candidate neighbor cells satisfying the requirement are selected by introducing a preset integrated measurement result. Therefore, the application can flexibly select one of the plurality of candidate adjacent cells as the target adjacent cell according to the requirement, and improves the flexibility of selection so as to ensure the flexibility of cell switching, so that the target adjacent cell finally decided can be more beneficial to ensuring the subsequent communication quality of the terminal equipment.

8. How to select one from multiple items

It should be noted that, how to select one item from multiple items, the present application may use a geographic distance nearest rule, a historical access rule, an arbitrary selection rule, etc.

The principle of geographical distance nearest neighbor cells is understood as that the neighbor cell nearest to the location of the terminal device is regarded as the target neighbor cell. For example, in the above example, the integrated measurement result of cell 1 and the integrated measurement result of cell 2 are both larger than the preset integrated measurement result. If the cell 1 is closest to the location of the terminal device, the terminal device selects the cell 1 as the target neighboring cell.

The history access principle can be understood as that the adjacent cell which is accessed by the terminal equipment in history or the adjacent cell with the highest history access frequency is used as the target adjacent cell. For example, in the above example, the integrated measurement result of cell 1 and the integrated measurement result of cell 2 are both larger than the preset integrated measurement result. If the terminal equipment is accessed in the cell 1 and the cell 2 in a history way, the number of times of accessing the cell 1 in the history way is 3, and the number of times of accessing the cell 2 in the history way is 1, the terminal equipment selects the cell 1 as a target adjacent cell.

The arbitrary selection principle is understood to mean that the terminal device arbitrarily selects one neighboring cell as the target neighboring cell. For example, in the above example, the integrated measurement result of cell 1 and the integrated measurement result of cell 2 are both larger than the preset integrated measurement result. The terminal device selects one of cell 1 and cell 2 as a target neighbor cell.

S230, the terminal equipment determines a cell switching strategy according to the moving speed state and the channel quality state, wherein the cell switching strategy is one of the following: and continuing to perform comprehensive measurement on the channel quality of the target adjacent cell before the second condition is met, ending the comprehensive measurement and switching from the serving cell to the target adjacent cell before the second condition is met, and ending the comprehensive measurement and switching from the serving cell to the target adjacent cell after the second condition is met.

It should be noted that the present application introduces a mobile speed state and a channel quality state, so that the terminal device can determine a plurality of different cell switching strategies according to the mobile speed state and the channel quality state, and the cell switching strategies can indicate whether to continue to perform comprehensive measurement before the second condition is satisfied, whether to finish the comprehensive measurement in advance to perform handover, or not to finish the comprehensive measurement in advance to perform handover, thereby improving flexibility of cell handover. If the cell switching strategy is to continue to comprehensively measure the channel quality of the target adjacent cell, the measurement accuracy is further improved; if the cell switching strategy is to finish the comprehensive measurement and switch from the serving cell to the target adjacent cell before the second condition is met, implementing the cell switching in advance and improving the switching efficiency; and if the cell switching strategy is that the comprehensive measurement is ended after the second condition is met and the cell is switched from the serving cell to the target adjacent cell, the cell switching is realized.

9. A moving speed state, a preset time, a preset change threshold value and a preset speed threshold value

The mobility speed state may represent a mobility speed condition in which the terminal device is in the serving cell before the second condition is satisfied.

In some possible implementations, the movement speed state may be determined by a first magnitude relation between an absolute value of a change in channel quality of the serving cell over a preset time and a preset change threshold before the second condition is satisfied, or by a first magnitude relation between a movement speed of the terminal device and a preset speed threshold before the second condition is satisfied.

The preset time, the preset change threshold value and the preset speed threshold value can be configured or preconfigured by a network.

It should be noted that the present application may determine the moving speed status in two ways:

one way is: the moving speed state is determined according to a magnitude relation (for convenience of distinguishing description, the magnitude relation is a 'first magnitude relation') between an absolute value of a change of the channel quality of the serving cell within a preset time and a preset change threshold before the second condition is satisfied.

If the absolute value of the change is smaller than a preset change threshold, the terminal equipment is in a low-speed moving state; if the absolute value of the change is greater than or equal to a preset change threshold, the terminal equipment is in a 'high-speed moving state'.

For example, the terminal device measures the magnitude relation between the absolute value of the change in RSRP of the serving cell within 1s and 3dBm before the second condition is satisfied. If the absolute value of the change is smaller than 3dBm, the moving speed of the terminal equipment is lower, and the terminal equipment is in a low-speed moving state; if the absolute value of the change is greater than or equal to 3dBm, the current moving speed of the terminal equipment is higher, and the terminal equipment is in a 'high-speed moving state'.

Another way is: the movement speed state is determined according to a magnitude relation between the movement speed of the terminal device and a preset speed threshold value before the second condition is satisfied (the magnitude relation is a "first magnitude relation" for convenience of distinguishing description).

If the moving speed of the terminal equipment is smaller than a preset speed threshold, the terminal equipment is in a low-speed moving state; if the moving speed of the terminal equipment is greater than or equal to the preset speed threshold value, the terminal equipment is in a 'high-speed moving state'.

10. Channel quality status

The channel quality status may represent a channel quality change condition of the serving cell before the second condition is met.

In some possible implementations, the channel quality state may be determined by a second magnitude relationship between the channel quality of the serving cell and a target threshold value between the first threshold value and the second threshold value before the second condition is satisfied.

If the channel quality of the serving cell is greater than or equal to the target threshold, the channel quality change condition of the serving cell is taken as a first channel quality state before the second condition is met. It is understood that the channel quality of the current serving cell is between the first threshold and the target threshold. If the channel quality of the serving cell is less than the target threshold, the channel quality change condition of the serving cell is taken as a second channel quality state before the second condition is satisfied. It is understood that the channel quality of the current serving cell is between the target threshold and the second threshold.

11. Target threshold value

It should be noted that, since the channel quality of the serving cell may be used to represent the distance between the geographic location of the terminal device and the central geographic location of the serving cell, and the target threshold may be a threshold of the channel quality of the serving cell, if the channel quality of the serving cell is between the first threshold and the target threshold (i.e., the first channel quality state), it is described that the distance between the geographic location of the terminal device and the central geographic location of the serving cell is somewhat far, but the communication quality of the terminal device can be ensured.

If the channel quality of the serving cell is between the target threshold and the second threshold (i.e., the second channel quality state), it is indicated that the distance between the geographic location of the terminal device and the central geographic location of the serving cell is already a little, and the communication quality of the terminal device can only be barely guaranteed.

To sum up, in order to determine the channel quality change situation of the serving cell before the second condition is satisfied, the present application introduces a target threshold value, and determines the cell handover policy by using a magnitude relation (referred to as a "second magnitude relation" for convenience of distinguishing description) between the channel quality of the serving cell and the target threshold value.

In some possible implementations, the target threshold may be determined by a first threshold and a second threshold.

For example, if the first threshold is-10 dBm and the second threshold is-20 dBm, then the target threshold is-15 dBm (i.e., (-10 dBm) +(-20 dBm))/2= -15 dBm).

12. How to determine a cell handover strategy

In one possible implementation, determining the cell handover policy according to the mobile speed state and the channel quality state in S230 may include the steps of:

if the moving speed state is a low-speed moving state or a high-speed moving state and the channel quality state is a first channel quality state, determining the cell switching strategy to continue to comprehensively measure the channel quality of the target adjacent cell before the second condition is met.

It can be understood that if the channel quality of the serving cell is between the first threshold and the target threshold (i.e., the first channel quality state), and the communication quality of the terminal device can also be guaranteed, the terminal device can continue to perform comprehensive measurement on the channel quality of the target neighboring cell, whether in the low-speed moving state or the high-speed moving state, so as to further improve the measurement accuracy through comprehensive measurement.

If the moving speed state is a high-speed moving state and the channel quality state is a second channel quality state, determining a cell switching strategy to finish the integrated measurement and switch from the serving cell to the target adjacent cell before the second condition is met.

It can be understood that if the channel quality of the serving cell is between the target threshold and the second threshold (i.e., the second channel quality state), that is, the distance between the current geographic location of the terminal device and the central geographic location of the serving cell is already a little, the communication quality of the terminal device can only be barely guaranteed, and the terminal device is in a high-speed moving state, it is indicated that the current moving speed of the terminal device is fast, and the channel quality of the serving cell may reach the second threshold fast. At this time, the terminal device may end the integrated measurement in advance and switch from the serving cell to the target neighboring cell, so as to implement cell switching in advance to improve the switching efficiency.

if the moving speed state is a low-speed moving state and the channel quality state is a second channel quality state, determining a cell switching strategy to finish the integrated measurement after the second condition is met and switching from the serving cell to the target adjacent cell.

It will be understood that if the channel quality of the serving cell is between the target threshold and the second threshold (i.e. the second channel quality state), and the terminal device is in the low-speed moving state, it is indicated that the current moving speed of the terminal device is slow, and the channel quality of the serving cell may reach the second threshold for some time. At this time, the terminal device may continue to perform the integrated measurement, and end the integrated measurement after the second condition is satisfied to switch to the target neighboring cell, so as to implement cell switching.

4. An example illustration of a cell switching apparatus

The foregoing description of the embodiments of the present application has been presented primarily from a method-side perspective. It will be appreciated that the terminal device or network device, in order to implement the above-described functions, includes corresponding hardware structures and/or software modules that perform the respective functions. Those of skill in the art will readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Those skilled in the art may implement the described functionality using different approaches for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

The embodiment of the application can divide the functional units of the terminal equipment or the network equipment according to the method example. For example, each functional unit may be divided corresponding to each function, or two or more functions may be integrated in one processing unit. The integrated units described above may be implemented either in hardware or in software program modules. It should be noted that, in the embodiment of the present application, the division of the units is schematic, but only one logic function is divided, and another division manner may be adopted in actual implementation.

In case of using integrated units, fig. 3 is a functional unit block diagram of a cell switching apparatus according to an embodiment of the present application. The cell switching apparatus 300 includes: a receiving unit 301, a measuring unit 302 and a determining unit 303.

In some possible implementations, the receiving unit 301 may be a module unit for processing signals, data, information, and the like, which is not particularly limited; the measurement unit 302 may be a module unit for processing signals, data, information, and the like, and is not particularly limited; the determination unit 303 may be a module unit for processing signals, data, information, and the like, and is not particularly limited.

In some possible implementations, the cell switching apparatus 300 may further include a storage unit for storing computer program code or instructions executed by the cell switching apparatus 300. The memory unit may be a memory.

In some possible implementations, the cell switching apparatus 300 may be a chip or a chip module.

In some possible implementations, the receiving unit 301, the measuring unit 302 and the determining unit 303 may be integrated in one unit or in different units.

For example, the receiving unit 301 may be integrated in a communication unit, while the measuring unit 302 and the determining unit 303 may be integrated in a processing unit.

As another example, the receiving unit 301, the measuring unit 302 and the determining unit 303 may be integrated in a processing unit.

The communication unit may be a communication interface, transceiver circuit, etc.

The processing unit may be a processor or controller, and may be, for example, a baseband processor, a baseband chip, a central processing unit (central processing unit, CPU), a general purpose processor, a digital signal processor (digital signal processor, DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (field programmable gate array, FPGA) or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various exemplary logical blocks, modules, and circuits described in connection with the present disclosure. The processing unit may also be a combination that implements computing functionality, e.g., comprising one or more microprocessor combinations, a combination of DSPs and microprocessors, etc.

In some possible implementations, the receiving unit 301, the measuring unit 302 and the determining unit 303 are configured to perform any step performed by the terminal device/chip module etc. as in the above-described method embodiments, such as sending or receiving data etc. The following is a detailed description.

In a specific implementation, the receiving unit 301, the measuring unit 302 and the determining unit 303 are configured to perform any of the steps in the above method embodiments, and when performing an action such as sending, other units may be selectively invoked to complete the corresponding operation. The following is a detailed description.

A receiving unit 301, configured to receive a plurality of condition switching configuration information when a first condition is satisfied, where the first condition is a first event for triggering a terminal device to report a measurement report, the first event is that a channel quality of a serving cell is greater than or equal to a first threshold, the measurement report is used for configuring a plurality of condition switching configuration information by a network, the condition switching configuration information includes information required for configuring the terminal device to switch from the serving cell to a neighboring cell, and each of the plurality of condition switching configuration information corresponds to one neighboring cell;

a measurement unit 302, configured to perform comprehensive measurement on one neighboring cell corresponding to each of the plurality of condition switching configuration information before a second condition is satisfied, where the second condition is a second event for triggering the terminal device to end the comprehensive measurement and switch out of the serving cell, the second event is that a channel quality of the serving cell is greater than or equal to a second threshold, and the second threshold is smaller than the first threshold;

A determining unit 303, configured to determine a cell switching policy according to the mobile speed state and the channel quality state, where the cell switching policy is one of the following: and continuing to comprehensively measure the channel quality of the target adjacent cell before the second condition is met, finishing the comprehensive measurement and switching from the serving cell to the target adjacent cell after the second condition is met, wherein the moving speed state indicates the moving speed of the terminal equipment in the serving cell before the second condition is met, and the channel quality state indicates the channel quality change condition of the serving cell before the second condition is met.

It should be noted that, the specific implementation of each operation in the embodiment shown in fig. 3 may be described in detail in the above-shown method embodiment, and will not be described in detail herein.

In some possible implementations, the moving speed state is determined by a first magnitude relation between an absolute value of a change of the channel quality of the serving cell within a preset time and a preset change threshold before the second condition is satisfied, or by a first magnitude relation between a moving speed of the terminal device and a preset speed threshold before the second condition is satisfied;

the channel quality state is determined by a second magnitude relation between the channel quality of the serving cell and a target threshold value, the target threshold value being between the first threshold value and the second threshold value, before the second condition is met.

In some possible implementations, the determining unit 303 is configured to, in determining the cell handover policy according to the mobile speed state and the channel quality state:

if the moving speed state is a low-speed moving state or a high-speed moving state and the channel quality state is a first channel quality state, determining a cell switching strategy to continue to comprehensively measure the channel quality of the target adjacent cell before the second condition is met;

If the moving speed state is a high-speed moving state and the channel quality state is a second channel quality state, determining a cell switching strategy to finish the comprehensive measurement and switch from the serving cell to the target adjacent cell before the second condition is met;

if the moving speed state is a low-speed moving state and the channel quality state is a second channel quality state, determining a cell switching strategy to finish the comprehensive measurement after the second condition is met and switching from the serving cell to the target adjacent cell;

the low-speed moving state is that the absolute value of change is smaller than a preset change threshold value or the moving speed of the terminal equipment is smaller than a preset speed threshold value;

the high-speed moving state is a state that the absolute value of the change is larger than or equal to a preset change threshold value or the moving speed of the terminal equipment is larger than or equal to a preset speed threshold value;

the first channel quality state is that the channel quality of the serving cell is greater than or equal to a target threshold;

and the second channel quality state is that the channel quality of the serving cell is smaller than a target threshold.

If the channel quality of the serving cell is between the target threshold and the second threshold (i.e., the second channel quality state), that is, the distance between the current geographic location of the terminal device and the central geographic location of the serving cell is already a little too long, the communication quality of the terminal device can only be guaranteed marginally, and the terminal device is in a high-speed moving state, it is indicated that the current moving speed of the terminal device is very fast, and the channel quality of the serving cell may reach the second threshold very fast. At this time, the terminal device may end the integrated measurement in advance and switch from the serving cell to the target neighboring cell, so as to implement cell switching in advance to improve the switching efficiency.

If the channel quality of the serving cell is between the target threshold and the second threshold (i.e., the second channel quality state), and the terminal device is in the low-speed moving state, it indicates that the current moving speed of the terminal device is very slow, and the channel quality of the serving cell may reach the second threshold for a period of time. At this time, the terminal device may continue to perform the integrated measurement, and end the integrated measurement after the second condition is satisfied to switch to the target neighboring cell, so as to implement cell switching.

In some possible implementations, the integrated measurement includes measuring a reference signal received power, RSRP, a reference signal received quality, RSRQ, and a signal-to-interference-plus-noise ratio, SINR, of the neighboring cells.

In some possible implementations, in performing a comprehensive measurement on one neighboring cell corresponding to each respective one of the plurality of conditional handover configuration information to determine the target neighboring cell, the measurement unit 302 is configured to:

and taking one adjacent cell corresponding to the largest item in the comprehensive measurement results of one adjacent cell corresponding to each individual as a target adjacent cell, or taking one adjacent cell corresponding to one of the comprehensive measurement results of one adjacent cell corresponding to each individual, which is larger than one of a plurality of items in a preset comprehensive measurement result, as the target adjacent cell.

In some possible implementations, the second condition is carried by a plurality of condition switching configuration information.

It can be seen that the second condition is configured by the network through the plurality of condition switching configuration information carrying the second condition.

In some possible implementations, the first condition is carried by measurement configuration information issued by the network.

It can be seen that the first condition of network configuration is achieved by measuring that the configuration information carries the first condition.

5. Yet another example illustration of a cell switching apparatus

In the case of using integrated units, fig. 4 is a functional unit block diagram of a cell switching apparatus according to an embodiment of the present application. The cell switching apparatus 400 includes: a transmitting unit 401.

In some possible implementations, the transmitting unit 401 may be a module unit for processing signals, data, information, and the like, which is not particularly limited.

In some possible implementations, the cell switching apparatus 400 may further include a storage unit for storing computer program code or instructions executed by the cell switching apparatus 300. The memory unit may be a memory.

In some possible implementations, the cell switching apparatus 400 may be a chip or a chip module.

In some possible implementations, the sending unit 401 may be integrated in other units.

For example, the transmitting unit 401 may be integrated in the communication unit.

For another example, the transmitting unit 401 may be integrated in the processing unit.

In some possible implementations, the sending unit 401 is configured to perform any step performed by the terminal device/chip module, etc. in the above-described method embodiments, such as sending or receiving data, etc. The following is a detailed description.

In particular implementation, the sending unit 401 is configured to perform any step in the method embodiments described above, and when performing an action such as sending, other units may be selectively called to complete the corresponding operation. The following is a detailed description.

The sending unit 401 is configured to receive a plurality of condition switching configuration information when a first condition is met, where the first condition is a first event for triggering the terminal device to report a measurement report, the first event is that a channel quality of a serving cell is greater than or equal to a first threshold, the measurement report is used for configuring a plurality of condition switching configuration information by a network, the condition switching configuration information includes information required for configuring the terminal device to switch from the serving cell to a neighboring cell, and each of the plurality of condition switching configuration information corresponds to one neighboring cell.

Therefore, the application realizes the network configuration of a plurality of adjacent cells of the service cell and the corresponding condition switching configuration information of the adjacent cells, namely a plurality of condition switching configuration information, through the measurement report under the condition that the first condition is satisfied.

It should be noted that, the specific implementation of each operation in the embodiment shown in fig. 4 may be described in detail in the above-shown method embodiment, and will not be described in detail herein.

In some possible implementations, the plurality of condition switching configuration information carries a second condition, where the second condition is a second event for triggering the terminal device to end the integrated measurement and switch out of the serving cell, and the second event is that the channel quality of the serving cell is greater than or equal to a second threshold, and the second threshold is less than the first threshold.

6. Example illustration of terminal equipment

Referring to fig. 5, fig. 5 is a schematic structural diagram of a terminal device according to an embodiment of the present application. Wherein the terminal device 500 comprises a processor 510, a memory 520 and a communication bus for connecting the processor 510 and the memory 520.

In some possible implementations, memory 520 includes, but is not limited to, random access memory (random access memory, RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), or portable read-only memory (compact disc read-only memory, CD-ROM), memory 520 for storing program code and transmitted data for execution by terminal device 500.

In some possible implementations, the terminal device 500 also includes a communication interface for receiving and transmitting data.

In some possible implementations, the processor 510 may be one or more Central Processing Units (CPUs), which may be a single-core Central Processing Unit (CPU) or a multi-core Central Processing Unit (CPU) in the case where the processor 510 is one.

In some possible implementations, the processor 510 may be a baseband chip, a Central Processing Unit (CPU), a general purpose processor, DSP, ASIC, FPGA, or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof.

In particular implementation, the processor 510 in the terminal device 500 is configured to execute the computer program or instructions 521 stored in the memory 520, and perform the following operations:

receiving a plurality of condition switching configuration information under the condition that a first condition is met, wherein the first condition is a first event used for triggering terminal equipment to report a measurement report, the first event is that the channel quality of a service cell is greater than or equal to a first threshold value, the measurement report is used for configuring a plurality of condition switching configuration information by a network, the condition switching configuration information comprises information required for configuring the terminal equipment to switch from the service cell to a neighboring cell, and each of the plurality of condition switching configuration information corresponds to one neighboring cell;

Before a second condition is met, carrying out comprehensive measurement on each corresponding adjacent cell in the plurality of condition switching configuration information to determine a target adjacent cell, wherein the second condition is a second event used for triggering the terminal equipment to finish the comprehensive measurement and switch out of the service cell, the second event is that the channel quality of the service cell is greater than or equal to a second threshold value, and the second threshold value is smaller than the first threshold value;

determining a cell switching strategy according to the mobile speed state and the channel quality state, wherein the cell switching strategy is one of the following: and continuing to comprehensively measure the channel quality of the target adjacent cell before the second condition is met, finishing the comprehensive measurement and switching from the serving cell to the target adjacent cell after the second condition is met, wherein the moving speed state indicates the moving speed of the terminal equipment in the serving cell before the second condition is met, and the channel quality state indicates the channel quality change condition of the serving cell before the second condition is met.

It should be noted that, the specific implementation of each operation in the embodiment shown in fig. 5 may be described in detail in the above-shown method embodiment, and will not be described in detail herein.

In some possible implementations, the processor 510 in the terminal device 500 is configured to execute the computer program or instructions 521 stored in the memory 520 in determining the cell handover policy according to the mobile speed state and the channel quality state, to perform the following operations:

In some possible implementations, in performing a comprehensive measurement of one neighboring cell corresponding to each respective one of the plurality of conditional handover configuration information to determine the target neighboring cell, the processor 510 in the terminal device 500 is configured to execute the computer program or instructions 521 stored in the memory 520 to:

7. An illustration of a network device

Referring to fig. 6, fig. 6 is a schematic structural diagram of a network device according to an embodiment of the present application. Wherein the network device 600 comprises a processor 610, a memory 620 and a communication bus for connecting the processor 610, the memory 620.

In some possible implementations, memory 620 includes, but is not limited to, RAM, ROM, EPROM or CD-ROM, memory 620 being used to store related instructions and data.

In some possible implementations, the network device 600 also includes a communication interface for receiving and transmitting data.

In some possible implementations, the processor 610 may be one or more Central Processing Units (CPUs), which may be a single-core Central Processing Unit (CPU) or a multi-core Central Processing Unit (CPU) in the case where the processor 610 is one.

In some possible implementations, the processor 610 may be a baseband chip, a Central Processing Unit (CPU), a general purpose processor, DSP, ASIC, FPGA, or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof.

In some possible implementations, the processor 610 in the network device 600 is configured to execute the computer program or instructions 621 stored in the memory 620 to perform the following operations:

and under the condition that the first condition is met, receiving a plurality of condition switching configuration information, wherein the first condition is a first event used for triggering the terminal equipment to report a measurement report, the first event is that the channel quality of a service cell is larger than or equal to a first threshold value, the measurement report is used for configuring a plurality of condition switching configuration information by a network, the condition switching configuration information comprises information required for configuring the terminal equipment to switch from the service cell to a neighboring cell, and each of the plurality of condition switching configuration information corresponds to one neighboring cell.

It should be noted that, the specific implementation of each operation in the embodiment shown in fig. 6 may be described in detail in the above-shown method embodiment, and will not be described in detail herein.

8. Other related exemplary illustrations

In some possible implementations, the above-described method embodiments may be applied to or among terminal devices. That is, the execution body of the above-described method embodiment may be a terminal device, and may be a chip, a chip module, a module, or the like, which is not particularly limited.

In some possible implementations, the above-described method embodiments may be applied to or among network devices. That is, the execution body of the above-mentioned method embodiment may be a network device, and may be a chip, a chip module or a module, which is not limited in particular.

The embodiment of the application also provides a chip which comprises a processor, a memory and a computer program or instructions stored on the memory, wherein the processor executes the computer program or instructions to realize the steps described in the embodiment of the method.

The embodiment of the application also provides a chip module, which comprises a receiving and transmitting assembly and a chip, wherein the chip comprises a processor, a memory and a computer program or instructions stored on the memory, and the processor executes the computer program or instructions to realize the steps described in the embodiment of the method.

The embodiments of the present application also provide a computer-readable storage medium storing a computer program or instructions which, when executed, implement the steps described in the method embodiments above.

Embodiments of the present application also provide a computer program product comprising a computer program or instructions which, when executed, implement the steps described in the method embodiments above.

The embodiment of the application also provides a communication system which comprises the terminal equipment and the network equipment.

For the above embodiments, for simplicity of description, the same is denoted as a series of combinations of actions. It will be appreciated by persons skilled in the art that the application is not limited by the order of acts described, as some steps in embodiments of the application may be performed in other orders or concurrently. In addition, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred embodiments, and that the acts, steps, modules, or units, etc. that are described are not necessarily required by the embodiments of the application.

In the foregoing embodiments, the descriptions of the embodiments of the present application are emphasized, and in part, not described in detail in one embodiment, reference may be made to related descriptions of other embodiments.

The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied in hardware, or may be embodied in software instructions executed by a processor. The software instructions may be comprised of corresponding software modules that may be stored in RAM, flash memory, ROM, EPROM, electrically Erasable EPROM (EEPROM), registers, hard disk, a removable disk, a compact disk read-only (CD-ROM), or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC. In addition, the ASIC may be located in a terminal device or a management device. The processor and the storage medium may reside as discrete components in a terminal device or management device.

Those skilled in the art will appreciate that in one or more of the examples described above, the functions described in the embodiments of the present application may be implemented, in whole or in part, in software, hardware, firmware, or any combination thereof. When implemented in software, may 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 loaded and executed on a computer, produces a flow or function in accordance with embodiments of the present application, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line (digital subscriber line, DSL)), or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may 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 usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a digital video disc (digital video disc, DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), or the like.

The respective apparatuses and the respective modules/units included in the products described in the above embodiments may be software modules/units, may be hardware modules/units, or may be partly software modules/units, and partly hardware modules/units. For example, for each device or product applied to or integrated on a chip, each module/unit included in the device or product may be implemented in hardware such as a circuit, or at least part of the modules/units may be implemented in software program, where the software program runs on a processor integrated inside the chip, and the rest (if any) of the modules/units may be implemented in hardware such as a circuit; for each device and product applied to or integrated in the chip module, each module/unit contained in the device and product can be realized in a hardware manner such as a circuit, different modules/units can be located in the same component (such as a chip, a circuit module and the like) or different components of the chip module, or at least part of the modules/units can be realized in a software program, the software program runs on a processor integrated in the chip module, and the rest (if any) of the modules/units can be realized in a hardware manner such as a circuit; for each device, product, or application to or integrated with the terminal device, each module/unit included in the device may be implemented in hardware such as a circuit, and different modules/units may be located in the same component (e.g., a chip, a circuit module, etc.) or different components in the terminal device, or at least some modules/units may be implemented in a software program, where the software program runs on a processor integrated within the terminal device, and the remaining (if any) part of the modules/units may be implemented in hardware such as a circuit.

The foregoing detailed description of the embodiments of the present application further illustrates the purposes, technical solutions and advantageous effects of the embodiments of the present application, and it should be understood that the foregoing description is only a specific implementation of the embodiments of the present application, and is not intended to limit the scope of the embodiments of the present application, and any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solutions of the embodiments of the present application should be included in the scope of the embodiments of the present application.

Claims

1. A method for cell handover, comprising:

2. The method according to claim 1, wherein the movement speed state is determined by a first magnitude relation between an absolute value of a change of the channel quality of the serving cell over a preset time and a preset change threshold before the second condition is satisfied, or by a first magnitude relation between a movement speed of the terminal device and a preset speed threshold before the second condition is satisfied;

The channel quality state is determined by a second magnitude relation between the channel quality of the serving cell and a target threshold value between the first threshold value and the second threshold value before the second condition is satisfied.

3. The method of claim 2, wherein said determining a cell handover strategy based on the mobile speed state and the channel quality state comprises:

if the moving speed state is the high-speed moving state and the channel quality state is a second channel quality state, determining the cell switching strategy to end the integrated measurement and switch from the serving cell to the target neighbor cell before the second condition is met;

if the moving speed state is the low-speed moving state and the channel quality state is the second channel quality state, determining the cell switching strategy to end the integrated measurement and switch from the serving cell to the target adjacent cell after the second condition is met;

The low-speed moving state is that the absolute value of the change is smaller than the preset change threshold value or the moving speed of the terminal equipment is smaller than the preset speed threshold value;

the high-speed moving state is that the absolute value of the change is larger than or equal to the preset change threshold value, or the moving speed of the terminal equipment is larger than or equal to the preset speed threshold value;

the first channel quality state is that the channel quality of the serving cell is greater than or equal to the target threshold;

and the second channel quality state is that the channel quality of the service cell is smaller than the target threshold value.

4. The method of claim 1 wherein the integrated measurement comprises measuring reference signal received power, RSRP, reference signal received quality, RSRQ, and signal-to-interference-plus-noise ratio, SINR, of the neighboring cells.

5. The method of claim 4, wherein the performing the integrated measurement on the one neighboring cell corresponding to each of the plurality of conditional access configuration information to determine the target neighboring cell comprises:

measuring RSRP, RSRQ, SINR of each adjacent cell corresponding to each of the plurality of conditional switching configuration information;

Weighted average is carried out on RSRP, RSRQ, SINR of each adjacent cell corresponding to each individual cell, and a comprehensive measurement result of each adjacent cell corresponding to each individual cell is obtained;

and taking one adjacent cell corresponding to the largest item in the comprehensive measurement results of one adjacent cell corresponding to each individual as a target adjacent cell, or taking one adjacent cell corresponding to one item which is larger than the preset comprehensive measurement results in the comprehensive measurement results of one adjacent cell corresponding to each individual as the target adjacent cell.

6. The method of claim 1, wherein the second condition is carried by a plurality of the conditional switch configuration information.

7. The method of claim 1, wherein the first condition is carried by measurement configuration information issued by a network.

8. A cell switching apparatus, comprising:

9. A terminal device comprising a processor, a memory and a computer program or instructions stored on the memory, characterized in that the processor executes the computer program or instructions to carry out the steps of the method according to any one of claims 1-7.

10. A computer-readable storage medium, characterized in that it stores a computer program or instructions which, when executed, implement the steps of the method of any one of claims 1-7.