WO2022104689A1 - Cell frequency domain bandwidth handover method, related apparatus, and device - Google Patents

Abstract

The present application provides a cell frequency domain bandwidth handover method, related apparatus, and a device, being applicable to the field of communications and used for completing cell frequency domain bandwidth handover without causing the problem of a service interruption during frequency domain bandwidth handover, thereby improving the quality of service. The method comprises: a network device transfers a terminal device from a first cell to a second cell, the second cell being established on the basis of a second frequency domain bandwidth resource, and the second frequency domain bandwidth resource being determined in a first frequency domain bandwidth resource corresponding to the first cell; then, the network device establishes a third cell on the basis of the first cell, an intersection existing between a third frequency domain bandwidth resource corresponding to the third cell and the first frequency domain bandwidth resource, and the intersection being a set of the same frequency domain bandwidth resources in the first frequency domain bandwidth resource and the third frequency domain bandwidth resource; and finally, the network device transfers the terminal device from the second cell to the third cell.

Description

A method, related device and device for switching frequency domain bandwidth of a cell technical field

The embodiments of the present application relate to the field of communications, and in particular, to a method, a related apparatus, and a device for switching a frequency domain bandwidth of a cell.

Background technique

In order to ensure the terminal performance of the Long Term Evolution (LTE) system, each transmission time interval (Transmission Time Interval, TTI) needs to send a cell-specific reference signal (CRS), and the terminal device receives the CRS. Afterwards, the CRS can be used for time-frequency offset tracking, channel quality indication (Channel Quality Indication, CQI) measurement, channel estimation, and the like. The frequency domain bandwidth sent by the CRS is consistent with the cell bandwidth configured in the Master Information Block (Master Information Block, MIB). Therefore, in order to increase the capacity, the frequency domain bandwidth needs to be increased under the condition that the useful signal and noise remain unchanged. A larger transmission bandwidth provides larger capacity, but when the network load is low, the capacity requirement can be met without requiring a large bandwidth. At this time, the large bandwidth increases the energy consumption.

At present, in order to solve the energy consumption problem caused by the large bandwidth when the network load is low, the user can be switched from the current frequency band to the inter-frequency cell, and then the original cell bandwidth can be reconfigured to a smaller bandwidth, and then the user can be switched back to the original cell. .

However, since a separate inter-frequency cell is required, the inter-frequency cell cannot be used for bandwidth switching when there is no inter-frequency cell coverage. Secondly, the forced switching to a smaller bandwidth in the deactivated, reconfigured, and reactivated cells may lead to The problem of service interruption, thereby reducing the quality of service.

SUMMARY OF THE INVENTION

The embodiments of the present application provide a method, related apparatus, and equipment for switching frequency domain bandwidth of a cell, which are used to complete the switching of frequency domain bandwidth of a cell, and the problem of service interruption will not be caused in the process of frequency domain bandwidth switching, thereby improving the service quality.

In a first aspect, the present application provides a method for switching a frequency domain bandwidth of a cell. The method may be executed by a network device, or may also be executed by a chip configured in the network device, which is not limited in this application. The method includes: the network device transfers the terminal device from the first cell to the second cell, the second cell is established based on the second frequency domain bandwidth resource, and the second frequency domain bandwidth resource is in the first frequency domain corresponding to the first cell. The network device establishes a third cell based on the first cell, and the third frequency domain bandwidth resource corresponding to the third cell has an intersection with the first frequency domain bandwidth resource, and the intersection is the first frequency domain bandwidth resource and the first frequency domain bandwidth resource. The three frequency domain bandwidth resources have a set of the same frequency domain bandwidth resources, and finally the network device transfers the terminal device from the second cell to the third cell.

In this embodiment, since the second frequency domain bandwidth resource is determined in the first frequency domain bandwidth resource corresponding to the first cell, the terminal device is transferred from the first cell to the first frequency domain bandwidth resource established based on the second frequency domain bandwidth resource. The second cell will not cause the problem of service interruption. Secondly, the terminal equipment is transferred from the second cell to the third cell established based on the first cell, because the bandwidth resources of the first frequency domain and the bandwidth resources of the third frequency domain have the same The frequency domain bandwidth resources are not exactly the same. Therefore, for the terminal device, the cell frequency domain bandwidth switching can be completed, and the service interruption problem will not be caused during the frequency domain bandwidth switching process, thereby improving the service quality.

In an optional implementation manner of the present application, when the cell load of the first cell is less than the first threshold, the network device determines the second frequency domain bandwidth resource in the first frequency domain bandwidth resource, and stops at the second frequency domain The terminal equipment is scheduled on the bandwidth resource, and then the network equipment establishes a second cell based on the second frequency domain bandwidth resource, the second cell is prohibited from being accessed by terminal equipment outside the cell, and the terminal equipment outside the cell does not belong to the service area corresponding to the first cell. Or, when the cell load of the first cell is greater than the second threshold, the network device determines the second frequency domain bandwidth resource in the first frequency domain bandwidth resource, and stops scheduling the terminal device on the second frequency domain bandwidth resource, and then the network device A second cell is established based on the second frequency domain bandwidth resource, the second cell is prohibited from being accessed by terminal equipment outside the cell, and the terminal equipment outside the cell does not belong to the service area corresponding to the first cell.

In this embodiment, when the cell load of the first cell is less than the first threshold, the capacity requirement can be satisfied even without a large bandwidth, so the bandwidth can be reduced, so the first frequency domain bandwidth resource is determined in the first frequency domain bandwidth resource. The second frequency domain bandwidth resource, at this time, the second frequency domain bandwidth resource belongs to the high bandwidth resource, and the second cell is established on the second frequency domain bandwidth resource that stops scheduling terminal equipment, and the terminal equipment in other cells cannot access the second cell. , to ensure that the second frequency domain bandwidth resource of the second cell is not occupied, thereby improving the reliability of the solution. Secondly, when the cell load of the first cell is greater than the second threshold, that is, the current bandwidth may not meet the capacity requirement, so the bandwidth needs to be increased, so the second frequency domain bandwidth resource is determined in the first frequency domain bandwidth resource. The second frequency domain bandwidth resource belongs to the lower bandwidth resource, and the second cell is established on the second frequency domain bandwidth resource of the terminal equipment that stops scheduling, and the terminal equipment of other cells cannot access the second cell. The bandwidth resources of the second frequency domain are not occupied, which further improves the reliability of the solution.

In an optional implementation manner of the present application, before the network device transfers the terminal device from the first cell to the second cell, the network device also needs to send a first message to the terminal device, where the first message instructs the terminal device to Inter-frequency measurement is performed on the channel resources of the second cell, and the terminal device performs inter-frequency measurement on the channel resources of the second cell to obtain a first inter-frequency measurement result, and when the first inter-frequency measurement result is greater than or equal to the third threshold, the network device The first inter-frequency measurement result sent by the terminal device will be received. Specifically, the channel resources of the second cell include but are not limited to master information blocks (Master Information Block, MIB), system information blocks (System Information Blocks, SIB), physical downlink control channel (Physical Downlink Control Channel, PDCCH), physical downlink Shared Channel (Physical Downlink Shared Channel, PDSCH) and Physical Uplink Shared Channel (Physical Uplink Shared Channel, PUSCH), the specific channel resources of the second cell are not limited here.

In this embodiment, the network device instructs the terminal device to perform inter-frequency measurement on the newly-created second cell through the first message, and obtains the first inter-frequency measurement result after the inter-frequency measurement to determine whether the second cell can provide normal service to the terminal device. service, when the first inter-frequency measurement result is greater than or equal to the third threshold, that is, the second cell can provide normal services to the terminal device, then the terminal device will send the first inter-frequency measurement result to the network device, so that the network device can The step of transferring the terminal equipment from the first cell to the second cell is performed to ensure that the service will not be interrupted during the process of transferring the terminal equipment, further improving the service quality and improving the feasibility of this solution.

In an optional implementation manner of the present application, after the network device establishes the third cell based on the first cell, and before the network device transfers the terminal device from the second cell to the third cell, the network device will also send a message to the terminal device. The second message, the second message instructs the terminal device to perform inter-frequency measurement on the channel resources of the third cell, the terminal device obtains the second inter-frequency measurement result after performing the inter-frequency measurement on the channel resources of the third cell, and when the second inter-frequency measurement When the frequency measurement result is greater than or equal to the fourth threshold, the network device will receive the second inter-frequency measurement result sent by the terminal device. Specifically, the channel resources of the third cell are similar to those of the second cell, including but not limited to MIB, SIB, PDCCH, PDSCH and PUSCH, and the specific channel resources of the third cell are not limited here.

In this embodiment, the network device instructs the terminal device to perform inter-frequency measurement on the third cell established based on the first cell through the second message, and obtains the second inter-frequency measurement result after the inter-frequency measurement to determine whether the third cell can perform the inter-frequency measurement on the terminal. The device provides normal services. When the second inter-frequency measurement result is greater than or equal to the fourth threshold, that is, the third cell can provide normal services to the terminal device, and then the terminal device will send the second inter-frequency measurement result to the network device. , so that the network device performs the step of transferring the terminal device from the second cell to the third cell, so as to ensure that the service will not be interrupted during the process of transferring the terminal device, further improve the service quality, and improve the feasibility of this solution.

In a second aspect, the present application provides a method for switching the frequency domain bandwidth of a cell. The method may be executed by a terminal device, or may also be executed by a chip configured in the terminal device, which is not limited in this application. The method includes: transferring a terminal device from a first cell to a second cell, where the second cell is established based on a second frequency domain bandwidth resource, and the second frequency domain bandwidth resource is a first frequency domain bandwidth resource corresponding to the first cell Determined in , the terminal equipment is transferred from the second cell to the third cell, the third cell is established based on the first cell, and the third frequency domain bandwidth resources corresponding to the third cell have an intersection with the first frequency domain bandwidth resources, and the intersection is The first frequency domain bandwidth resource and the third frequency domain bandwidth resource have the same set of frequency domain bandwidth resources.

In this embodiment, since the second frequency domain bandwidth resource is determined in the first frequency domain bandwidth resource corresponding to the first cell, the terminal device transfers from the first cell to the second frequency domain bandwidth resource established based on the second frequency domain bandwidth resource. The cell can also be provided with services, and secondly, the terminal equipment is transferred from the second cell to the third cell established based on the first cell, because the first frequency domain bandwidth resource and the third frequency domain bandwidth resource have the same frequency domain bandwidth resources, but not identical, so the terminal device completes the switching of the cell frequency domain bandwidth without causing service interruption, thereby improving the service quality.

In an optional implementation manner of the present application, before the terminal device is transferred from the first cell to the second cell, the terminal device may also receive the first message sent by the network device, and then, according to the first message, analyze the channel of the second cell. Perform inter-frequency measurement on the resource to obtain a first inter-frequency measurement result, and when the first inter-frequency measurement result is greater than or equal to a third threshold, the terminal device sends the first inter-frequency measurement result to the network device. Specifically, the channel resources of the second cell include but are not limited to MIB, SIB, PDCCH, PDSCH and PUSCH, and the specific channel resources of the second cell are not limited here.

In this embodiment, the terminal device performs inter-frequency measurement on the channel resources of the second cell according to the first message to obtain the first inter-frequency measurement result, and judges whether the second cell can provide the terminal device with normal frequency according to the first inter-frequency measurement result. service, when the first inter-frequency measurement result is greater than or equal to the third threshold, that is, the second cell can provide normal services to the terminal device, then the terminal device will send the first inter-frequency measurement result to the network device, so that the network device can The step of transferring the terminal equipment from the first cell to the second cell is performed to ensure that the service will not be interrupted during the process of transferring the terminal equipment, further improving the service quality and improving the feasibility of this solution.

In an optional implementation manner of the present application, after the terminal device is transferred from the first cell to the second cell, and before the terminal device is transferred from the second cell to the third cell, the terminal device will also receive the first message sent by the network device. two messages, and perform inter-frequency measurement on the channel resources of the third cell according to the second message, and obtain a second inter-frequency measurement result. When the second inter-frequency measurement result is greater than or equal to the fourth threshold, the terminal device sends the second inter-frequency measurement result to the network device. Two inter-frequency measurement results. Specifically, the channel resources of the third cell are similar to those of the second cell, including but not limited to MIB, SIB, PDCCH, PDSCH and PUSCH, and the specific channel resources of the third cell are not limited here.

In this embodiment, the terminal device performs inter-frequency measurement on the channel resources of the third cell according to the second message to obtain the second inter-frequency measurement result, and judges whether the third cell can provide the terminal device with normal frequency according to the second inter-frequency measurement result. service, when the second inter-frequency measurement result is greater than or equal to the fourth threshold, that is, the third cell can provide normal services to the terminal device, and then the terminal device will send the second inter-frequency measurement result to the network device, so that the network device can The step of transferring the terminal equipment from the second cell to the third cell is performed to ensure that the service will not be interrupted during the process of transferring the terminal equipment, thereby further improving the service quality and improving the feasibility of this solution.

In a third aspect, a communication device is provided. The communication apparatus has part or all of the functions of implementing the first aspect and the network device described in any possible implementation manner of the first aspect. For example, the function of the apparatus may have the function of some or all of the embodiments of the network device in this application, or may have the function of independently implementing any one of the embodiments of this application. The functions can be implemented by hardware, or can be implemented by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

In a possible design, the structure of the communication device may include a processing module and a transceiver module, and the processing module is configured to support the communication device to perform the corresponding functions in the above method. The transceiver module is used to support communication between the communication device and other devices. The communication device may further include a storage module for coupling with the processing module and the communication module, which stores necessary program instructions and data for the communication device.

In one embodiment, the communication device includes:

The processing module is used to transfer the terminal device from the first cell to the second cell, where the second cell is established based on the second frequency domain bandwidth resource, and the second frequency domain bandwidth resource is the first frequency domain corresponding to the first cell. determined in the domain bandwidth resource;

The processing module is further configured to establish a third cell based on the first cell, wherein the third frequency domain bandwidth resource corresponding to the third cell has an intersection with the first frequency domain bandwidth resource, and the intersection is the first frequency domain bandwidth resource and the third frequency domain bandwidth resource. A set of domain bandwidth resources with the same frequency domain bandwidth resources;

The processing module is further configured to transfer the terminal device from the second cell to the third cell.

For the relevant content of this embodiment, reference may be made to the relevant content of the above-mentioned first aspect, which will not be described in detail here.

As an example, the processing module may be a processor or a processing unit, the transceiver module may be a transceiver, a communication interface or a communication unit, and the storage module may be a memory or a storage unit.

In another implementation manner, the communication device may include:

The processor is configured to transfer the terminal device from the first cell to the second cell, where the second cell is established based on the second frequency domain bandwidth resource, and the second frequency domain bandwidth resource is the first frequency domain corresponding to the first cell. determined in the domain bandwidth resource;

The processor is further configured to establish a third cell based on the first cell, wherein the third frequency domain bandwidth resource corresponding to the third cell and the first frequency domain bandwidth resource have an intersection, and the intersection is the first frequency domain bandwidth resource and the third frequency domain bandwidth resource. A set of domain bandwidth resources with the same frequency domain bandwidth resources;

The processor is further configured to transfer the terminal device from the second cell to the third cell.

For the relevant content of this embodiment, reference may be made to the relevant content of the above-mentioned first aspect, which will not be described in detail here.

During implementation, the processor may be used to perform, for example but not limited to, baseband related processing, and the transceiver may be used to perform, for example but not limited to, radio frequency transceiving. The above-mentioned devices may be respectively arranged on chips that are independent of each other, or at least part or all of them may be arranged on the same chip. For example, processors can be further divided into analog baseband processors and digital baseband processors. Among them, the analog baseband processor can be integrated with the transceiver on the same chip, and the digital baseband processor can be set on a separate chip. With the continuous development of integrated circuit technology, more and more devices can be integrated on the same chip. For example, a digital baseband processor can be integrated with a variety of application processors (such as but not limited to graphics processors, multimedia processors, etc.) on the same chip. Such a chip may be called a System on Chip. Whether each device is independently arranged on different chips or integrated on one or more chips often depends on the needs of product design. The embodiments of the present application do not limit the implementation form of the foregoing device.

In a fourth aspect, a communication apparatus is provided, including a processor. The processor is coupled to the memory and can be used to execute instructions in the memory to implement the method in any one of the possible implementations of the first aspect above. Optionally, the communication device further includes a memory. Optionally, the communication device further includes a communication interface, the processor is coupled to the communication interface, the communication interface is used for inputting and/or outputting information, and the information includes at least one of instructions and data.

In one implementation, the communication apparatus is a network device. When the communication device is a network device, the communication interface may be a transceiver, or an input/output interface.

Optionally, the transceiver may be a transceiver circuit. Optionally, the input/output interface may be an input/output circuit.

In another implementation manner, the communication apparatus is a chip or a chip system configured in a network device. When the communication device is a chip or a chip system configured in a network device, the communication interface may be an input/output interface, an interface circuit, an output circuit, an input circuit, a pin or a related circuit, and the like. The processor may also be embodied as a processing circuit or a logic circuit.

In a fifth aspect, a communication device is provided. The communication apparatus has part or all of the functions of implementing the second aspect and the terminal device described in any possible implementation manner of the second aspect. For example, the functions of the apparatus may have the functions of some or all of the embodiments of the terminal device in this application, and may also have the functions of independently implementing any one of the embodiments of this application. The functions can be implemented by hardware, or can be implemented by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

In a possible design, the structure of the communication device may include a processing module and a transceiver module, and the processing module is configured to support the communication device to perform the corresponding functions in the above method. The transceiver module is used to support communication between the communication device and other devices. The communication device may further include a storage module for coupling with the processing module and the communication module, which stores necessary program instructions and data for the communication device.

In one embodiment, the communication device includes:

A processing module for transferring from a first cell to a second cell, where the second cell is established based on a second frequency domain bandwidth resource, and the second frequency domain bandwidth resource is a first frequency domain bandwidth resource corresponding to the first cell determined in;

The processing module is further configured to transfer from the second cell to the third cell, wherein the third cell is established based on the first cell, and the third frequency domain bandwidth resource corresponding to the third cell has an intersection with the first frequency domain bandwidth resource, The intersection is a set of the first frequency domain bandwidth resource and the third frequency domain bandwidth resource having the same frequency domain bandwidth resource.

For the relevant content of this embodiment, reference may be made to the relevant content of the above-mentioned second aspect, which will not be described in detail here.

As an example, the processing module may be a processor or a processing unit, the transceiver module may be a transceiver, a communication interface or a communication unit, and the storage module may be a memory or a storage unit.

In another implementation manner, the communication device may include:

a processor, configured to transfer from the first cell to the second cell, where the second cell is established based on the second frequency domain bandwidth resource, and the second frequency domain bandwidth resource is the first frequency domain bandwidth resource corresponding to the first cell determined in;

The processor is further configured to transfer from the second cell to the third cell, where the third cell is established based on the first cell, and the third frequency domain bandwidth resource corresponding to the third cell has an intersection with the first frequency domain bandwidth resource, The intersection is a set of the first frequency domain bandwidth resource and the third frequency domain bandwidth resource having the same frequency domain bandwidth resource.

For the relevant content of this embodiment, reference may be made to the relevant content of the above-mentioned second aspect, which will not be described in detail here.

In a sixth aspect, a communication apparatus is provided, including a processor. The processor is coupled to the memory and can be used to execute instructions in the memory to implement the method in any of the possible implementations of the second aspect above. Optionally, the communication device further includes a memory. Optionally, the communication device further includes a communication interface, the processor is coupled to the communication interface, the communication interface is used for inputting and/or outputting information, and the information includes at least one of instructions and data.

In an implementation manner, the communication apparatus is a terminal device. When the communication device is a terminal device, the communication interface may be a transceiver, or an input/output interface.

Optionally, the transceiver may be a transceiver circuit. Optionally, the input/output interface may be an input/output circuit.

In another implementation manner, the communication apparatus is a chip or a chip system configured in the terminal device. When the communication device is a chip or a chip system configured in the terminal device, the communication interface may be an input/output interface, an interface circuit, an output circuit, an input circuit, a pin or a related circuit, and the like. The processor may also be embodied as a processing circuit or a logic circuit.

In a seventh aspect, a processor is provided, including: an input circuit, an output circuit, and a processing circuit. The processing circuit is configured to receive a signal through the input circuit and transmit a signal through the output circuit, so that the processor executes the method in any one of the possible implementations of the first aspect and the second aspect.

In a specific implementation process, the above-mentioned processor may be a chip, the input circuit may be an input pin, the output circuit may be an output pin, and the processing circuit may be a transistor, a gate circuit, a flip-flop, and various logic circuits. The input signal received by the input circuit may be received and input by, for example, but not limited to, a receiver, the signal output by the output circuit may be, for example, but not limited to, output to and transmitted by a transmitter, and the input circuit and output The circuit can be the same circuit that acts as an input circuit and an output circuit at different times. The embodiments of the present application do not limit the specific implementation manners of the processor and various circuits.

In an eighth aspect, a communication apparatus is provided, including a communication interface and a processor. The communication interface is coupled with the processor. The communication interface is used to input and/or output information. The information includes at least one of instructions and data. The processor is configured to execute a computer program to cause the communication device to perform the method in any of the possible implementations of the first aspect and the second aspect.

Optionally, there are one or more processors and one or more memories.

In a ninth aspect, a communication device is provided, including a processor and a memory. The processor is used to read instructions stored in the memory, and can receive signals through a receiver and transmit signals through a transmitter, so that the apparatus performs the method in any one of the possible implementations of the first aspect and the second aspect.

Optionally, there are one or more processors and one or more memories.

Optionally, the memory may be integrated with the processor, or the memory may be provided separately from the processor.

In the specific implementation process, the memory can be a non-transitory memory, such as a read only memory (ROM), which can be integrated with the processor on the same chip, or can be separately set in different On the chip, the embodiment of the present application does not limit the type of the memory and the setting manner of the memory and the processor.

It should be understood that the relevant information exchange process, for example, sending indication information may be a process of outputting indication information from the processor, and receiving indication information may be a process of inputting received indication information to the processor. Specifically, the information output by the processing can be output to the transmitter, and the input information received by the processor can be from the receiver. Among them, the transmitter and the receiver may be collectively referred to as a transceiver.

The communication device in the eighth aspect and the ninth aspect may be a chip, and the processor may be implemented by hardware or software. When implemented by hardware, the processor may be a logic circuit, an integrated circuit, or the like; when When implemented by software, the processor can be a general-purpose processor, and is implemented by reading software codes stored in a memory, which can be integrated in the processor or located outside the processor and exist independently.

In a tenth aspect, a computer program product is provided, the computer program product comprising: a computer program (also referred to as code, or instructions), which, when the computer program is executed, causes a computer to execute the first aspect and the first aspect above. The method in any possible implementation manner of the two aspects.

In an eleventh aspect, a computer-readable storage medium is provided, and the computer-readable storage medium stores a computer program (also referred to as code, or instruction) when it runs on a computer, causing the computer to execute the above-mentioned first A method of any possible implementation of the aspect and the second aspect.

A twelfth aspect provides a communication system, including the aforementioned terminal device and network device.

In a thirteenth aspect, the present application provides a chip system, the chip system includes a processor and an interface, the interface is used to obtain a program or an instruction, and the processor is used to call the program or instruction to implement or support a network device To implement the functions involved in the first aspect, for example, to determine or process at least one of the data and information involved in the above method.

In a possible design, the chip system further includes a memory for storing necessary program instructions and data of the network device. The chip system may be composed of chips, or may include chips and other discrete devices.

In a fourteenth aspect, the present application provides a chip system, the chip system includes a processor and an interface, the interface is used to obtain a program or an instruction, and the processor is used to call the program or instruction to implement or support a terminal device To implement the functions involved in the second aspect, for example, to determine or process at least one of the data and information involved in the above method.

In a possible design, the chip system further includes a memory for storing necessary program instructions and data of the terminal device. The chip system may be composed of chips, or may include chips and other discrete devices.

It should be noted that the beneficial effects brought by the implementations of the third aspect to the fourteenth aspect of the present application can be understood with reference to the implementations of the first aspect and the second aspect, and thus are not repeated.

Description of drawings

1 is a schematic diagram of a system architecture of a communication system in an embodiment of the application;

FIG. 2 is a schematic diagram of an embodiment of a method for switching frequency domain bandwidth of cells in an embodiment of the present application;

FIG. 3 is a schematic diagram of an embodiment of determining a second frequency domain bandwidth resource in an embodiment of the present application;

FIG. 4 is a schematic diagram of an embodiment of establishing a second cell in an embodiment of the present application;

FIG. 5 is a schematic diagram of an embodiment of establishing a third cell based on establishment of a first cell in an embodiment of the present application;

FIG. 6 is a schematic diagram of another embodiment of a method for switching a frequency domain bandwidth of a cell in an embodiment of the present application;

FIG. 7 is a schematic diagram of another embodiment of determining a second frequency domain bandwidth resource in an embodiment of the present application;

FIG. 8 is a schematic diagram of another embodiment of establishing a second cell in an embodiment of the present application;

FIG. 9 is a schematic diagram of another embodiment of establishing a third cell based on establishment of a first cell in an embodiment of the present application

FIG. 10 is a schematic diagram of an embodiment of a communication device in an embodiment of the present application;

FIG. 11 is a schematic diagram of another embodiment of the communication device in the embodiment of the present application;

FIG. 12 is a schematic structural diagram of a terminal device provided by an embodiment of the present application;

FIG. 13 is a schematic structural diagram of a network device provided by an embodiment of the present application.

Detailed ways

The technical solutions in the present application will be described below with reference to the accompanying drawings.

The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: LTE system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), universal mobile communication system (universal mobile telecommunication system, UMTS). With the continuous development of communication systems, the technical solutions of the present application can be applied to fifth generation (5th generation, 5G) systems or new radio (NR) systems, and can also be applied to future networks, such as 6G systems or even future systems; Or it can also be used in device-to-device (D2D) systems, machine-to-machine (M2M) systems, and so on.

It should be understood that the network device in the communication system can be any device with a wireless transceiver function or a chip that can be provided in the device, and the device includes but is not limited to: evolved Node B (evolved Node B, eNB), wireless Network Controller (Radio Network Controller, RNC), Node B (Node B, NB), Base Station Controller (Base Station Controller, BSC), Base Transceiver Station (Base Transceiver Station, BTS), Home Base Station (for example, Home evolved NodeB , or Home Node B, HNB), baseband unit (BaseBand Unit, BBU), access point (Access Point, AP), wireless relay node, wireless backhaul node, wireless fidelity (Wireless Fidelity, WIFI) system Transmission point (TP) or transmit and receive point (TRP), etc., can also be used in 5G, 6G or even future systems, such as NR, gNB in the system, or transmission point (TRP or TP), 5G One or a group (including multiple antenna panels) antenna panels of the base station in the system, or, it can also be a network node that constitutes a gNB or a transmission point, such as a baseband unit (BBU), or a distributed unit (distributed unit, DU) ), or Picocell, or Femtocell, or, vehicle to everything (V2X) or roadside unit (RSU) in intelligent driving scenarios, etc.

In some deployments, a gNB may include a centralized unit (CU) and a DU. The gNB may also include a radio unit (RU). The CU implements some functions of the gNB, and the DU implements some functions of the gNB. For example, the CU implements the functions of the radio resource control (RRC) layer and the packet data convergence protocol (PDCP) layer, and the DU implements the functions of the radio resource control (RRC) layer. The functions of the link control (radio link control, RLC) layer, media access control (media access control, MAC) layer and physical layer (physical layer, PHY). Since the information of the RRC layer will eventually become the information of the PHY layer, or be transformed from the information of the PHY layer, therefore, under this architecture, higher-layer signaling, such as RRC layer signaling or PHCP layer signaling, can also It is considered to be sent by DU, or, sent by DU+RU. It can be understood that the network device may be a CU node, a DU node, or a device including a CU node and a DU node. In addition, the CU may be divided into network equipment in the access network RAN, and the CU may also be divided into network equipment in the core network CN, which is not limited herein.

In the embodiments disclosed in the present application, the apparatus for implementing the function of the network device may be a network device; it may also be an apparatus capable of supporting the network device to implement the function, such as a chip system, and the apparatus may be installed in the network device.

It should also be understood that the terminal equipment in the communication system may also be referred to as user equipment (UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user Terminal, terminal, wireless communication device, user agent or user equipment. The terminal device in the embodiments of the present application may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (Virtual Reality, VR) terminal device, and an augmented reality (Augmented Reality, AR) terminal equipment, wireless terminals in industrial control, wireless terminals in self driving, wireless terminals in remote medical, wireless terminals in smart grid, transportation security ( Wireless terminals in transportation safety), wireless terminals in smart cities, wireless terminals in smart homes, wireless terminals in the aforementioned V2X Internet of Vehicles or RSUs of wireless terminal type, etc. The embodiments of the present application do not limit application scenarios.

In addition, in order to facilitate understanding of the embodiments of the present application, the following points are described.

First, in this application, for the convenience of description, when referring to numbering, the numbering may start from 0 consecutively. For example, the 0th symbol in a certain time slot may refer to the first symbol of the time slot. Of course, the specific implementation is not limited to this. For example, it can also be numbered consecutively from 1. For example, the first symbol in a certain time slot may also refer to the first symbol of the time slot. Since the starting values of the numbers are different, the numbers corresponding to the same symbol in the time slots are also different.

It should be understood that the above descriptions are all settings for the convenience of describing the technical solutions provided by the embodiments of the present application, and are not intended to limit the scope of the present application.

Second, in the embodiments shown below, for a technical feature, the technical features in this technical feature are distinguished by "first", "second", "third", etc. The technical features described in "Second" and "Third" have no sequence or order of magnitude.

Third, "at least one" means one or more, and "plurality" means two or more. "And/or", which describes the association relationship of the associated objects, indicates that there can be three kinds of relationships, for example, A and/or B, which can indicate: the existence of A alone, the existence of A and B at the same time, and the existence of B alone, where A, B can be singular or plural. The character "/" generally indicates that the associated objects are an "or" relationship. "At least one item(s) below" or similar expressions thereof refer to any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (a) of a, b and c can represent: a, or, b, or, c, or, a and b, or, a and c, or, b and c, or, a , b and c. Where a, b and c can be single or multiple respectively.

Fourth, in the embodiments shown below, some scenarios are described by taking the scenario of an NR network in a wireless communication network as an example. It should be noted that the solutions in the embodiments disclosed in this application can also be applied to other wireless communication networks. , the corresponding names can also be replaced by the names of corresponding functions in other wireless communication networks.

Fifth, the embodiments disclosed herein will present various aspects, embodiments or features of the present application around a system including a plurality of devices, components, modules, and the like. It is to be understood and appreciated that the various systems may include additional devices, components, modules, etc., and/or may not include all of the devices, components, modules, etc. discussed in connection with the figures. In addition, combinations of these schemes can also be used.

Sixth, in the embodiments disclosed in this application, "of", "relevant" and "corresponding" may sometimes be used interchangeably. The meaning to be expressed is the same.

In order to better understand the method, related apparatus, and device for switching the frequency domain bandwidth of a cell disclosed in the embodiments of the present application, the system architecture of the communication system used in the embodiments of the present invention is first described below. Please refer to FIG. 1. FIG. 1 is a schematic diagram of a system architecture of a communication system in an embodiment of the application. As shown in FIG. 1, the system may include one or more terminal devices, a packet core network (Evolved Packet Core, EPC), and an evolved Evolved Universal Mobile Telecommunications System Terrestrial Radio Access Network (E-UTRAN). Specifically, E-UTRAN includes one or more eNBs, and may also include a Multicast Coordination Entity (MCE), and multiple eNBs may be connected through a backhaul (eg, X2 interface), such as eNB 1 It is connected with eNB 2 through the X2 interface, between eNB 1 and eNB 3 through the X2 interface, and between eNB 2 and eNB 3 through the X2 interface. The MCE can allocate time-frequency radio resources for Evolved Multimedia Broadcast/Multicast Services (eMBMS) and determine the radio configuration for eMBMS. The MCE can be an entity independent of the eNodeB or a part of the eNodeB. . Secondly, the eNodeB provides access from the terminal equipment to the EPC, so the eNodeB is connected to the EPC, and the EPC can be connected to the eNodeB through a link (such as the S1 interface), and the EPC can include but is not limited to Mobility Management Entity (Mobility Management Entity, MME, MME) ), Serving Gateway (S-GW) and Public Data Network Gateway (P-GW), MME is the control node that handles signaling between UE and EPC, provides bearer and connection management, and all The Internet Protocol (IP) packets of the terminal equipment are sent through the S-GW, the S-GW is connected with the P-GW, and the P-GW provides IP address allocation and other functions for the terminal equipment. The terminal device can communicate with the millimeter wave (millimeter wave, mmW) system through the LTE network, so the terminal device can communicate with one or more eNBs through the LTE link, and can also communicate with other connection points through the mmW link. point, CP) or base station to communicate.

In the LTE system, in order to ensure terminal performance, CRS needs to be sent for each TTI, and the frequency domain bandwidth sent by the CRS is consistent with the cell bandwidth configured in the MIB. Therefore, in order to increase the capacity, the frequency domain bandwidth needs to be increased under the condition that the useful signal and noise remain unchanged. A larger transmission bandwidth provides larger capacity, but when the network load is low, the capacity requirement can be met without requiring a large bandwidth. At this time, the large bandwidth increases the energy consumption. At present, in order to solve the energy consumption problem caused by the large bandwidth when the network load is low, the user can be switched from the current frequency band to the inter-frequency cell, and then the original cell bandwidth can be reconfigured to a smaller bandwidth, and then the user can be switched back to the original cell. . However, since a separate inter-frequency cell is required, the inter-frequency cell cannot be used for bandwidth switching when there is no inter-frequency cell coverage. Secondly, the forced switching to a smaller bandwidth in the deactivated, reconfigured, and reactivated cells may lead to The problem of service interruption, thereby reducing the quality of service.

In order to solve the above problem, the embodiment of the present application provides a method for switching the frequency domain bandwidth of a cell, which is used to complete the switching of the frequency domain bandwidth of the cell, and the problem of service interruption will not be caused during the process of switching the frequency domain bandwidth, thereby improving the service quality.

The method for switching the cell frequency domain bandwidth used in the embodiment of the present application is described in detail below. Since the cell frequency domain bandwidth switching requires the simultaneous operation of the cell A and the cell B, the terminal equipment needs to perform inter-frequency between the channel resources of the cell A and the cell B. measurement. The terminal equipment can be switched from cell A to cell B only when the inter-frequency measurement result obtained after performing inter-frequency measurement on the channel resources of cell A and cell B satisfies the cell frequency domain bandwidth switching condition. Only the frequency domain bandwidth resources of the original cell are used. Therefore, in order to meet the cell frequency domain bandwidth switching conditions, the embodiment of the present application needs to transmit the air interface signals of cell A and cell B on the frequency domain bandwidth resources of the original cell. In order to avoid cell A as much as possible And the signals between the cells B influence each other, and the signals of the cell A and the cell B are respectively sent in the form of frequency division. For the frequency domain bandwidth resources, it is necessary to determine the frequency domain bandwidth resources used by cell A in the frequency domain bandwidth resources of the original cell, and at the same time prohibit the terminal equipment in the original cell from accessing cell A, when the cell frequency domain bandwidth switching conditions are met. Then, transfer the terminal equipment in the original cell to cell A. After the handover is completed, based on the frequency domain bandwidth resources of the original cell, establish a cell B with overlapping but not identical frequency domain bandwidth resources. After satisfying the cell frequency domain bandwidth switching conditions , transfer the terminal equipment of cell A to cell B. Through this process, the frequency domain bandwidth switching of the cell is completed, and the service interruption problem will not be caused during the frequency domain bandwidth switching process, thereby improving the service quality.

Since the embodiment of the present application can switch the cell frequency domain bandwidth from a large bandwidth to a small bandwidth, and can also switch the cell frequency domain bandwidth from a small bandwidth to a large bandwidth, the following two cases are introduced respectively.

1. Switch from large bandwidth to small bandwidth

For ease of understanding, the first frequency domain bandwidth resource corresponding to the first cell is 20 megabytes (M), the second frequency domain bandwidth resource corresponding to the second cell is 5M, and the third frequency domain bandwidth resource corresponding to the third cell is 10M is introduced as an example, and the foregoing example should not be construed as a limitation of this application. Please refer to FIG. 2 . FIG. 2 is a schematic diagram of an embodiment of a method for switching a cell frequency domain bandwidth in an embodiment of the present application. As shown in FIG. 2 , the method for switching a cell frequency domain bandwidth includes the following steps.

S101. When the cell load of the first cell is less than the first threshold, the network device determines the second frequency domain bandwidth resource in the first frequency domain bandwidth resource, and stops scheduling the terminal device on the second frequency domain bandwidth resource.

In this embodiment, since the first frequency domain bandwidth resource corresponding to the first cell is 20M, when the cell load of the first cell is less than the first threshold, the capacity requirement can be met without a large frequency domain bandwidth, that is, 20M bandwidth. The first frequency domain bandwidth resource is not fully utilized, so the effect of energy saving can be achieved by reducing the frequency domain bandwidth resource. Therefore, the network device determines the second frequency domain bandwidth resource in the first frequency domain bandwidth resource. At this time, the second frequency domain bandwidth resource is a high-bandwidth resource, that is, the network device blocks 20M medium and high-end 5M resource blocks (Resource Block, RB) , and stop scheduling the terminal device on the second frequency domain bandwidth resource, that is, stop scheduling the terminal device on the blocked 5MB RB. Further, the network device also needs to puncture the CRS of the second frequency domain bandwidth resource.

Specifically, in this embodiment, the first threshold may be 60% or 50%, and the specific first threshold needs to be flexibly determined according to the specific first frequency domain bandwidth resources of the first cell and the actual situation of the specific cell load of the first cell.

For ease of understanding, please refer to FIG. 3. FIG. 3 is a schematic diagram of an embodiment of determining the second frequency domain bandwidth resource in this embodiment of the present application. As shown in FIG. 3, A1 indicates the first cell, and A2 indicates the first frequency domain bandwidth resource. A3 indicates the second frequency domain bandwidth resource, blocks the RB corresponding to the second frequency domain bandwidth resource A3 on the first frequency domain bandwidth resource A2 corresponding to the first cell A1, thereby determining the second frequency domain bandwidth resource A3, and stops at The terminal equipment is scheduled on the second frequency domain bandwidth resource A2, and the CRS of the second frequency domain bandwidth resource A3 is punctured. It can be understood that the example in FIG. 3 is only used to understand the present solution, and should not be construed as a limitation of the present application.

S102. The network device establishes a second cell based on the second frequency domain bandwidth resource, wherein the second cell is prohibited from being accessed by terminal equipment outside the cell, and the terminal equipment outside the cell does not belong to the service area corresponding to the first cell.

In this embodiment, the network device newly establishes an independent inter-frequency cell at the location of the second frequency domain bandwidth resource, the inter-frequency cell is the second cell, and the second cell is prohibited from being accessed by terminal equipment outside the cell, that is, no Terminal devices that do not belong to the service area corresponding to the first cell are allowed to access. At this time, the second frequency domain bandwidth resource of the second cell is a high frequency of 5M, that is, the range of the second frequency domain bandwidth resource may be 15M to 20M.

Specifically, the second cell includes but is not limited to channel resources such as MIB, SIB, PDCCH, PDSCH, and PUSCH, and the specific channel resources of the second cell are not limited here.

Further, since the physical cell identification (Physical Cell Identification, PCI) MOD3 of the adjacent cell is the same, the carrier sent by the CRS will cause co-channel interference. In order to avoid mutual interference between the first cell and the second cell, the PCI MOD3 of the second cell and the A cell needs to be staggered, and the first cell is not scheduled within this 5M frequency spectrum, so as to avoid mutual interference between the two cells.

For ease of understanding, please refer to FIG. 4 , which is a schematic diagram of an embodiment of establishing a second cell in an embodiment of the present application. As shown in FIG. 4 , B1 indicates the first frequency domain bandwidth resource, and B2 indicates the second frequency domain bandwidth resource. B3 instructs the second cell, determines the second frequency domain bandwidth resource B2 on the first frequency domain bandwidth resource B1 by means of step S101, and stops scheduling terminal equipment in the second frequency domain bandwidth resource B2, and further, based on the second frequency domain bandwidth resource B2 The domain bandwidth resource B2 establishes the second cell B3. It can be understood that the example in FIG. 4 is only used to understand the present solution, and should not be construed as a limitation of the present application.

S103. The network device sends a first message to the terminal device.

In this embodiment, after the network device establishes the second cell through step S102, it needs to determine that the second cell can provide normal services to the terminal device. Therefore, the terminal and the device also need to provide service to all terminal devices in the service area corresponding to the first cell. A first message is sent, where the first message instructs all terminal devices in the service area corresponding to the first cell to perform inter-frequency measurement on the channel resources of the second cell.

S104. The terminal device performs inter-frequency measurement on the channel resources of the second cell according to the first message, to obtain a first inter-frequency measurement result.

In this embodiment, after the terminal device receives the first message sent by the network device in step S103, since the first message instructs all terminal devices in the service area corresponding to the first cell to perform inter-frequency measurement on the channel resources of the second cell , so the terminal device performs inter-frequency measurement on the channel resources of the second cell, and obtains the first inter-frequency measurement result. Specifically, the terminal device performs inter-frequency measurement on channel resources such as MIB, SIB, PDCCH, PDSCH, and PUSCH of the second cell to obtain a first inter-frequency measurement result.

Further, after the terminal device obtains the first inter-frequency measurement result, it needs to determine whether the second cell can provide normal services to the terminal device. Since the first inter-frequency measurement result can indicate the signal strength of the channel resources of the second cell, the When an inter-frequency measurement result is smaller than the third threshold, it means that the signal of the channel resource of the second cell is weak, and there may be a problem that the service provided to the terminal equipment is interrupted. In this case, the subsequent steps are performed. Secondly, when the first inter-frequency measurement result is greater than or equal to the third threshold, it means that the signal of the channel resource of the second cell is strong, and there is no problem of service interruption, and step S105 is performed at this time. It can be understood that the specific third threshold needs to be flexibly determined according to the specific second frequency domain bandwidth resource of the second cell and the actual situation of the signal strength of the specific channel resource of the second cell.

S105. When the first inter-frequency measurement result is greater than or equal to the third threshold, the terminal device sends the first inter-frequency measurement result to the network device.

In this embodiment, when the first inter-frequency measurement result is greater than or equal to the third threshold, that is, the signal of the channel resource of the second cell is strong, and the problem of service interruption will not occur, so the terminal device sends step S104 to the network device The obtained first inter-frequency measurement result.

S106, the network device transfers the terminal device from the first cell to the second cell.

In this embodiment, after receiving the first inter-frequency measurement result sent in step S105, the network device can determine that the signal of the channel resource of the second cell is strong, that is, the second cell can provide services for the terminal device, and no The problem of service interruption occurs, at this time, the network device transfers the terminal device from the first cell to the second cell.

S107. The network device establishes a third cell based on the first cell.

In this embodiment, since the network device transfers the terminal device from the first cell to the second cell in step S106, and there is no terminal device in the first cell at this time, the bandwidth of the first cell can be adjusted. The first frequency domain bandwidth resource of the cell is reconfigured as the third frequency domain bandwidth resource, and the first frequency domain bandwidth resource and the third frequency domain bandwidth resource have the same frequency domain bandwidth resource, and then the third frequency domain bandwidth resource is located at the location of the third frequency domain bandwidth resource. A new cell is established, which is the third cell, and the third cell is prohibited from being accessed by terminal equipment outside the cell, that is, access by terminal equipment not belonging to the service area corresponding to the second cell is not allowed. Specifically, the third frequency domain bandwidth resource needs to include RBs that support sending CRS. Since the second cell has been established based on the high-end 5M frequency domain bandwidth resources in the first frequency domain bandwidth resources of 20M in this embodiment, the first frequency domain bandwidth resources that can be allocated at this time are 15M, and the The frequency domain bandwidth resource 15M is reconfigured to 10M, that is, the third frequency domain bandwidth resource is 10M. It can be understood that the foregoing examples are only used to understand the present solution, and should not be construed as a limitation of the present application.

Specifically, the third cell includes but is not limited to channel resources such as MIB, SIB, PDCCH, PDSCH, and PUSCH, and the specific channel resources of the third cell are not limited here.

Further, since the PCI MOD3 is the same, the carrier sent by the CRS will cause co-channel interference. In order to avoid mutual interference between the second cell and the third cell, the PCI MOD3 of the second cell and the third cell need to be staggered, so as to avoid the two cells. interfere with each other.

For easy understanding, please refer to FIG. 5. FIG. 5 is a schematic diagram of an embodiment of establishing a third cell based on the establishment of the first cell in this embodiment of the application. As shown in FIG. 5, C1 indicates the second cell, and C2 indicates the second frequency domain bandwidth. resource, C3 indicates the first frequency domain bandwidth resource, C4 indicates the third frequency domain bandwidth resource, and C5 indicates the third cell. After establishing the second cell C1 on the second frequency domain bandwidth resource C2 by means of step S102, it is A third frequency domain bandwidth resource C4 is determined from a frequency domain bandwidth resource C3, and a third cell C3 is established based on the third frequency domain bandwidth resource C4. It can be understood that the example in FIG. 5 is only used to understand the present solution, and should not be construed as a limitation of the present application.

S108, the network device sends the second message to the terminal device.

In this embodiment, after the network device establishes the third cell through step S107, it needs to determine that the third cell can provide normal services to the terminal device. Therefore, the terminal and the device also need to provide service to all terminal devices in the service area corresponding to the second cell. A second message is sent, where the second message instructs all terminal devices in the service area corresponding to the second cell to perform inter-frequency measurement on the channel resources of the third cell.

S109: The terminal device performs inter-frequency measurement on the channel resources of the third cell according to the second message, to obtain a second inter-frequency measurement result.

In this embodiment, after the terminal device receives the second message sent by the network device in step S108, because the second message instructs all terminal devices in the service area corresponding to the second cell to perform inter-frequency measurement on the channel resources of the third cell , so the terminal device performs inter-frequency measurement on the channel resources of the third cell, and obtains a second inter-frequency measurement result. Specifically, the terminal device performs inter-frequency measurement on channel resources such as MIB, SIB, PDCCH, PDSCH, and PUSCH of the third cell to obtain a second inter-frequency measurement result.

Further, after the terminal device obtains the second inter-frequency measurement result, it needs to determine whether the third cell can provide normal services to the terminal device. Since the second inter-frequency measurement result can indicate the signal strength of the channel resources of the third cell, the first When the two-frequency measurement result is less than the fourth threshold, it means that the signal of the channel resource of the third cell is weak, and the problem of interruption of service provided to the terminal equipment may occur, and the subsequent steps are performed at this time. Secondly, when the second inter-frequency measurement result is greater than or equal to the fourth threshold, that is, the signal reflecting the channel resources of the third cell is strong, and the problem of service interruption will not occur, and step S110 is performed at this time. It can be understood that the specific fourth threshold needs to be flexibly determined according to the specific third frequency domain bandwidth resource of the third cell and the actual situation of the signal strength of the specific channel resource of the third cell.

S110. When the second inter-frequency measurement result is greater than or equal to the fourth threshold, the terminal device sends the second inter-frequency measurement result to the network device.

In this embodiment, when the second inter-frequency measurement result is greater than or equal to the fourth threshold, that is, the signal of the channel resource of the third cell is strong, and the problem of service interruption will not occur, so the terminal device sends step S109 to the network device The obtained second inter-frequency measurement result.

S111. The network device transfers the terminal device from the second cell to the third cell.

In this embodiment, after receiving the second inter-frequency measurement result sent in step S110, the network device can determine that the signal of the channel resource of the third cell is strong, that is, the third cell can provide services for the terminal device, and no The problem of service interruption occurs, at this time, the network device transfers the terminal device from the second cell to the third cell. Further, the second cell is deactivated. In this way, the frequency domain bandwidth switching of the cell can be completed without affecting the cell service performance, reducing the frequency domain bandwidth, thereby reducing the energy consumption loss, and the problem of service interruption will not be caused during the frequency domain bandwidth switching process. This improves service quality.

2. Switch from small bandwidth to large bandwidth

For ease of understanding, the first frequency domain bandwidth resource corresponding to the first cell is 15M, the second frequency domain bandwidth resource corresponding to the second cell is 5M, and the third frequency domain bandwidth resource corresponding to the third cell is 20M as an example. For introduction, please refer to FIG. 6 . FIG. 6 is a schematic diagram of another embodiment of the method for switching the bandwidth of the cell frequency domain in the embodiment of the present application. As shown in FIG. 6 , the method for switching the bandwidth of the cell frequency domain includes the following steps.

S201. When the cell load of the first cell is greater than the second threshold, the network device determines the second frequency domain bandwidth resource in the first frequency domain bandwidth resource, and stops scheduling the terminal device on the second frequency domain bandwidth resource.

In this embodiment, since the first frequency domain bandwidth resource corresponding to the first cell is 15M, when the cell load of the first cell is greater than the second threshold, that is, the current bandwidth may not meet the capacity requirement, so the bandwidth needs to be increased to meet the capacity requirements. Therefore, the network device determines the second frequency domain bandwidth resource in the first frequency domain bandwidth resource. At this time, the second frequency domain bandwidth resource belongs to the lower bandwidth resource, that is, the network device blocks the 15M medium and high-end 5M RB, and stops at the second frequency domain bandwidth resource. Scheduling terminal equipment on the frequency domain bandwidth resources, that is, stop scheduling terminal equipment on the blocked 5M RB. Further, the network device also needs to puncture the CRS of the second frequency domain bandwidth resource.

Specifically, in this embodiment, the second threshold may be 60% or 70%, and the specific second threshold needs to be flexibly determined according to the specific first frequency domain bandwidth resources of the first cell and the actual situation of the specific cell load of the first cell.

For ease of understanding, please refer to FIG. 7. FIG. 7 is a schematic diagram of another embodiment of determining the second frequency domain bandwidth resource in this embodiment of the present application. As shown in FIG. 7, D1 indicates the first cell, and D2 indicates the first frequency domain bandwidth resource. , D3 indicates the second frequency domain bandwidth resource, blocks the RB corresponding to the second frequency domain bandwidth resource D3 on the first frequency domain bandwidth resource D2 corresponding to the first cell D1, thereby determining the second frequency domain bandwidth resource D3, and stops The terminal device is scheduled on the second frequency domain bandwidth resource D2, and the CRS of the second frequency domain bandwidth resource D3 is punctured. It can be understood that the example in FIG. 7 is only used to understand the present solution, and should not be construed as a limitation of the present application.

S202. The network device establishes a second cell based on the second frequency domain bandwidth resource, wherein the second cell is prohibited from being accessed by terminal equipment outside the cell, and the terminal equipment outside the cell does not belong to the service area corresponding to the first cell.

In this embodiment, the network device newly establishes an independent inter-frequency cell at the location of the bandwidth resource in the second frequency domain, the inter-frequency cell is the second cell, and the second cell is prohibited from being accessed by terminal equipment outside the cell, that is, no access to the second cell is allowed. Terminal devices that do not belong to the service area corresponding to the first cell are allowed to access. At this time, the second frequency domain bandwidth resource of the second cell is a high frequency of 5M, that is, the range of the second frequency domain bandwidth resource may be 15M to 20M. Specifically, the second cell includes but is not limited to channel resources such as MIB, SIB, PDCCH, PDSCH, and PUSCH, and the specific channel resources of the second cell are not limited here.

Further, since the PCI MOD3 is the same, the carrier sent by the CRS will cause co-channel interference. In order to avoid mutual interference between the first cell and the second cell, the PCI MOD3 of the second cell and the first cell need to be staggered, and the first cell is not here. Scheduling within the 5M spectrum to avoid mutual interference between the two cells.

For ease of understanding, please refer to FIG. 8 , which is a schematic diagram of another embodiment of establishing a second cell in this embodiment of the present application. As shown in FIG. 8 , E1 indicates a first frequency domain bandwidth resource, and E2 indicates a second frequency domain bandwidth resource , E3 indicates the second cell, determines the second frequency domain bandwidth resource E2 on the first frequency domain bandwidth resource E1 by means of step S201, and stops scheduling terminal equipment in the second frequency domain bandwidth resource E2, further, based on the second frequency domain bandwidth resource E2 The frequency domain bandwidth resource E2 establishes the second cell E3. It can be understood that the example in FIG. 8 is only used to understand the present solution, and should not be construed as a limitation of the present application.

S203. The network device sends a first message to the terminal device.

In this embodiment, the manner in which the network device sends the first message to the terminal device is similar to step S103, and details are not described herein again.

S204: The terminal device performs inter-frequency measurement on the channel resources of the second cell according to the first message, to obtain a first inter-frequency measurement result.

In this embodiment, the terminal device performs inter-frequency measurement on the channel resources of the second cell according to the first message, and the method for obtaining the first inter-frequency measurement result is similar to step S104, and details are not repeated here.

S205. When the first inter-frequency measurement result is greater than or equal to the third threshold, the terminal device sends the first inter-frequency measurement result to the network device.

In this embodiment, when the first inter-frequency measurement result is greater than or equal to the third threshold, the manner in which the terminal device sends the first inter-frequency measurement result to the network device is similar to step S105, and details are not repeated here.

S206, the network device transfers the terminal device from the first cell to the second cell.

In this embodiment, the manner in which the network device transfers the terminal device from the first cell to the second cell is similar to step S106, and details are not described herein again.

S207. The network device establishes a third cell based on the first cell.

In this embodiment, since the network device transfers the terminal device from the first cell to the second cell in step S206, and there is no terminal device in the first cell at this time, the bandwidth of the first cell can be adjusted. The first frequency domain bandwidth resource of the cell is reconfigured as the third frequency domain bandwidth resource, and the first frequency domain bandwidth resource and the third frequency domain bandwidth resource have the same frequency domain bandwidth resource, and then the third frequency domain bandwidth resource is located at the location of the third frequency domain bandwidth resource. A new cell is established, which is the third cell, and the third cell is prohibited from being accessed by terminal equipment outside the cell, that is, access by terminal equipment not belonging to the service area corresponding to the second cell is not allowed. Specifically, the third frequency domain bandwidth resource needs to include RBs that support sending CRS. Since the total frequency domain bandwidth resources in the original cell where the first cell and the second cell are located is 20M, in this embodiment, the second cell has been established based on the high-end 5M frequency domain bandwidth resources in the 15M first frequency domain bandwidth resources , at this time, the total allocable frequency domain bandwidth resources in the original cell where the first cell and the second cell are located is 15M, and at this time, the total allocable frequency domain bandwidth resources are reconfigured from 10M to 15M, that is, the third frequency domain The bandwidth resource is 15M. It can be understood that the foregoing examples are only used to understand the present solution, and should not be construed as a limitation of the present application.

Specifically, the third cell includes but is not limited to channel resources such as MIB, SIB, PDCCH, PDSCH, and PUSCH, and the specific channel resources of the third cell are not limited here.

Further, since the PCI MOD3 is the same, the carrier sent by the CRS will cause co-channel interference. In order to avoid mutual interference between the second cell and the third cell, the PCI MOD3 of the second cell and the third cell need to be staggered, so as to avoid the two cells. interfere with each other.

For ease of understanding, please refer to FIG. 9. FIG. 9 is a schematic diagram of another embodiment of establishing a third cell based on the establishment of the first cell in this embodiment of the present application. As shown in FIG. 9, F1 indicates the second cell, and F2 indicates the second frequency domain Bandwidth resources, F3 indicates the first frequency domain bandwidth resource, F4 indicates the third frequency domain bandwidth resource, and F9 indicates the third cell. After establishing the second cell F1 on the second frequency domain bandwidth resource F2 by means of step S102, it is A third frequency domain bandwidth resource F4 is determined in the first frequency domain bandwidth resource F3, and a third cell F3 is established based on the third frequency domain bandwidth resource F4. It can be understood that the example in FIG. 9 is only used to understand the present solution, and should not be construed as a limitation of the present application.

S208, the network device sends the second message to the terminal device.

In this embodiment, the manner in which the network device sends the second message to the terminal device is similar to step S108, and details are not described herein again.

S209: The terminal device performs inter-frequency measurement on the channel resources of the third cell according to the second message, to obtain a second inter-frequency measurement result.

In this embodiment, the terminal device performs inter-frequency measurement on the channel resources of the third cell according to the second message, and the manner in which the second inter-frequency measurement result is obtained is similar to that of step S109, and details are not repeated here.

S210. When the second inter-frequency measurement result is greater than or equal to the fourth threshold, the terminal device sends the second inter-frequency measurement result to the network device.

In this embodiment, when the second inter-frequency measurement result is greater than or equal to the fourth threshold, the manner in which the terminal device sends the second inter-frequency measurement result to the network device is similar to step S110, and details are not repeated here.

S211. The network device transfers the terminal device from the second cell to the third cell.

In this embodiment, the manner in which the network device transfers the terminal device from the second cell to the third cell is similar to step S111, and details are not described herein again.

The solutions provided by the embodiments of the present application are described above mainly from the perspective of methods. It can be understood that, in order to realize the above-mentioned functions, the communication apparatus includes corresponding hardware structures and/or software modules for executing each function. Those skilled in the art should easily realize that the present application can be implemented in hardware or in the form of a combination of hardware and computer software. Whether a function is performed by hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

This embodiment of the present application may divide the communication device into functional modules based on the foregoing method examples. For example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The above-mentioned integrated modules can be implemented in the form of hardware, and can also be implemented in the form of software function modules. It should be noted that, the division of modules in the embodiments of the present application is schematic, and is only a logical function division, and there may be other division manners in actual implementation.

The communication device in the present application will be described in detail below. Please refer to FIG. 10 . FIG. 10 is a schematic diagram of an embodiment of the communication device in the embodiment of the present application. As shown in the figure, the communication device 1000 includes a processing module 1001 and a transceiver module 1002 .

Optionally, the communication apparatus 1000 may correspond to the network device in the above method embodiments, for example, may be a network device, or a component (such as a circuit, a chip, or a chip system, etc.) configured in the network device.

It should be understood that the communication apparatus 1000 may correspond to the method in FIG. 2 according to an embodiment of the present application, or the method in FIG. 6 , and the communication apparatus 1000 may include a method for executing the method in FIG. 2 , or the method in FIG. 6 . A unit of the method performed by the network device in the method. In addition, each unit in the communication apparatus 1000 and the above-mentioned other operations and/or functions are respectively to implement the method in FIG. 2 or the corresponding flow of the method in FIG. 6 .

Wherein, when the communication device 1000 is used to execute the method in FIG. 2 , the transceiver module 1002 can be used to execute steps S103 , S105 , S108 and S110 of the method in FIG. 2 , and the processing module 1001 can be used to execute the steps in FIG. 2 . The method steps S101, S102, S106, S107 and S111 of the method. It should be understood that the specific process of each unit performing the above-mentioned corresponding steps has been described in detail in the above-mentioned method embodiments, and for the sake of brevity, it will not be repeated here.

When the communication device 1000 is used to execute the method in FIG. 6 , the transceiver module 1002 can be used to execute steps S203 , S205 , S208 and S210 of the method in FIG. 6 , and the processing module 1001 can be used to execute the method in FIG. 6 . Step S201, Step S202, Step S206, Step S207 and Step S211. It should be understood that the specific process of each unit performing the above-mentioned corresponding steps has been described in detail in the above-mentioned method embodiments, and for the sake of brevity, it will not be repeated here.

It should also be understood that when the communication apparatus 1000 is a network device, the transceiver module 1002 in the communication apparatus 1000 may be implemented by a transceiver, for example, may correspond to the remote radio unit (remote radio) in the network device 4000 shown in FIG. 13 . unit, RRU) 4100, the processing module 1001 in the communication apparatus 1000 may be implemented by at least one processor, for example, may correspond to the processing unit 4200 or the processor 4202 in the network device 4000 shown in FIG. 13 .

It should also be understood that when the communication apparatus 1000 is a chip or a chip system configured in a network device, the transceiver module 1002 in the communication apparatus 1000 may be implemented through input/output interfaces, circuits, etc., and the processing module 1001 in the communication apparatus 1000 It can be implemented by a processor, microprocessor or integrated circuit integrated on the chip or chip system.

Next, please refer to FIG. 11 . FIG. 11 is a schematic diagram of an embodiment of a communication device according to an embodiment of the present application. As shown in the figure, the communication device 1100 includes a processing module 1101 and a transceiver module 1102 .

Optionally, the communication apparatus 1100 may correspond to the terminal device in the above method embodiments, for example, may be a terminal device, or a component (such as a circuit, a chip or a chip system, etc.) configured in the terminal device.

It should be understood that the communication apparatus 1100 may correspond to the method in FIG. 2 according to an embodiment of the present application, or the method in FIG. 6 , and the communication apparatus 1100 may include a method for executing the method in FIG. 2 , or the method in FIG. 6 . A unit of the method executed by the terminal device in the method. Moreover, each unit in the communication apparatus 1100 and the above-mentioned other operations and/or functions are respectively to implement the method in FIG. 2 or the corresponding flow of the method in FIG. 6 .

Wherein, when the communication device 1100 is used to execute the method in FIG. 2 , the processing module 1101 can be used to execute step S104 and step S109 of the method in FIG. 2 , the transceiver module 1102 can be used to execute step S103 of the method in FIG. 2 , Step S105, Step S108 and Step S110. It should be understood that the specific process of each unit performing the above-mentioned corresponding steps has been described in detail in the above-mentioned method embodiments, and for the sake of brevity, it will not be repeated here.

When the communication device 1100 is used to execute the method in FIG. 6 , the processing module 1101 can be used to execute steps S204 and S209 of the method in FIG. 6 , and the transceiver module 1102 can be used to execute steps S203 and S205 of the method in FIG. 6 . , step S208 and step S210. It should be understood that the specific process of each unit performing the above-mentioned corresponding steps has been described in detail in the above-mentioned method embodiments, and for the sake of brevity, it will not be repeated here.

It should also be understood that when the communication device 1100 is a terminal device, the transceiver module 1102 in the communication device 1100 can be implemented by a transceiver, for example, it can correspond to the transceiver 3020 in the terminal device 3000 shown in FIG. 12 , the communication device The processing module 1101 in 1100 may be implemented by at least one processor, for example, may correspond to the processor 3010 in the terminal device 3000 shown in FIG. 12 .

It should also be understood that when the communication device 1100 is a chip or a chip system configured in a terminal device, the transceiver module 1102 in the communication device 1100 can be implemented through input/output interfaces, circuits, etc., and the processing module 1101 in the communication device 1100 It can be implemented by a processor, microprocessor or integrated circuit integrated on the chip or chip system.

FIG. 12 is a schematic structural diagram of a terminal device 3000 provided by an embodiment of the present application. The terminal device 3000 can be applied to the system shown in FIG. 1 to perform the functions of the terminal device in the foregoing method embodiments. As shown in the figure, the terminal device 3000 includes a processor 3010 and a transceiver 3020 . Optionally, the terminal device 3000 further includes a memory 3030 . Among them, the processor 3010, the transceiver 3020 and the memory 3030 can communicate with each other through an internal connection path to transmit control and/or data signals. The computer program is invoked and executed to control the transceiver 3020 to send and receive signals. Optionally, the terminal device 3000 may further include an antenna 3040 for sending the uplink data or uplink control signaling output by the transceiver 3020 through wireless signals.

The above-mentioned processor 3010 and the memory 3030 can be combined into a communication device, and the processor 3010 is configured to execute the program codes stored in the memory 3030 to realize the above-mentioned functions. During specific implementation, the memory 3030 may also be integrated in the processor 3010 or independent of the processor 3010 . The processor 3010 may correspond to the processing module 1101 in FIG. 11 .

The transceiver 3020 described above may correspond to the transceiver module 1102 in FIG. 11 . The transceiver 3020 may include a receiver (or called receiver, receiving circuit) and a transmitter (or called transmitter, transmitting circuit). Among them, the receiver is used for receiving signals, and the transmitter is used for transmitting signals.

It should be understood that the terminal device 3000 shown in FIG. 12 can implement various processes involving the terminal device in the method embodiment shown in FIG. 2 or FIG. 6 . The operations and/or functions of each module in the terminal device 3000 are respectively to implement the corresponding processes in the foregoing method embodiments. For details, reference may be made to the descriptions in the foregoing method embodiments, and to avoid repetition, the detailed descriptions are appropriately omitted here.

The above-mentioned processor 3010 may be used to perform the actions described in the foregoing method embodiments that are implemented inside the terminal device, and the transceiver 3020 may be used to perform the operations described in the foregoing method embodiments that the terminal device sends to or receives from the network device. action. For details, please refer to the descriptions in the foregoing method embodiments, which will not be repeated here.

Optionally, the above-mentioned terminal device 3000 may further include a power supply 3050 for providing power to various devices or circuits in the terminal device.

In addition, in order to make the functions of the terminal device more complete, the terminal device 3000 may further include one or more of an input unit 3060, a display unit 3070, an audio circuit 3080, a camera 3090, a sensor 3100, etc., the audio circuit Speakers 3082, microphones 3084, etc. may also be included.

FIG. 13 is a schematic structural diagram of a network device provided by an embodiment of the present application, which may be, for example, a schematic structural diagram of a base station. The base station 4000 can be applied to the system shown in FIG. 1 to perform the functions of the network device in the foregoing method embodiments. As shown, the base station 4000 may include one or more radio frequency units, such as an RRU 4100 , and one or more baseband units (BBUs) (also referred to as distributed units (DUs)) 4200 . The RRU 4100 may be called a transceiver unit, which may correspond to the transceiver module 1002 in FIG. 10 . Optionally, the RRU 4100 may also be referred to as a transceiver, a transceiver circuit, or a transceiver, etc., which may include at least one antenna 4101 and a radio frequency unit 4102. Optionally, the RRU 4100 may include a receiving unit and a sending unit, the receiving unit may correspond to a receiver (or called a receiver, a receiving circuit), and the sending unit may correspond to a transmitter (or called a transmitter, a sending circuit). The RRU 4100 part is mainly used for receiving and sending radio frequency signals and converting radio frequency signals to baseband signals, for example, for sending indication information to terminal equipment. The part of the BBU 4200 is mainly used to perform baseband processing and control the base station. The RRU 4100 and the BBU 4200 may be physically set together, or may be physically separated, that is, a distributed base station.

The BBU 4200 is the control center of the base station, and can also be called a processing unit, which can correspond to the processing module 1001 in FIG. 10 , and is mainly used to complete baseband processing functions, such as channel coding, multiplexing, modulation, spread spectrum, and the like. For example, the BBU (processing unit) may be used to control the base station to perform the operation procedure of the network device in the foregoing method embodiments, for example, to generate the foregoing indication information and the like.

In an example, the BBU 4200 may be composed of one or more boards, and the multiple boards may jointly support a wireless access network (such as an LTE network) of a single access standard, or may respectively support a wireless access network of different access standards. Wireless access network (such as LTE network, 5G network or other network). The BBU 4200 also includes a memory 4201 and a processor 4202. The memory 4201 is used to store necessary instructions and data. The processor 4202 is configured to control the base station to perform necessary actions, for example, to control the base station to execute the operation flow of the network device in the foregoing method embodiments. The memory 4201 and the processor 4202 may serve one or more single boards. That is to say, the memory and processor can be provided separately on each single board. It can also be that multiple boards share the same memory and processor. In addition, necessary circuits may also be provided on each single board.

It should be understood that the base station 4000 shown in FIG. 13 can implement various processes involving network devices in the method embodiment shown in FIG. 2 or FIG. 6 . The operations and/or functions of each module in the base station 4000 are respectively to implement the corresponding processes in the foregoing method embodiments. For details, reference may be made to the descriptions in the foregoing method embodiments, and to avoid repetition, the detailed descriptions are appropriately omitted here.

The above-mentioned BBU 4200 can be used to perform the actions described in the foregoing method embodiments that are implemented internally by the network device, while the RRU 4100 can be used to execute the actions described in the foregoing method embodiments that the network device sends to or receives from the terminal device. For details, please refer to the descriptions in the foregoing method embodiments, which will not be repeated here.

It should be understood that the base station 4000 shown in FIG. 13 is only a possible form of network equipment, and should not constitute any limitation to the present application. The method provided in this application can be applied to other forms of network equipment. For example, it includes AAU, may also include CU and/or DU, or includes BBU and adaptive radio unit (ARU), or BBU; may also be customer terminal equipment (customer premises equipment, CPE), may also be For other forms, the present application does not limit the specific form of the network device.

Wherein, the CU and/or DU may be used to perform the actions implemented by the network device described in the foregoing method embodiments, and the AAU may be used to execute the network device described in the foregoing method embodiments to send or receive from the terminal device. Actions. For details, please refer to the descriptions in the foregoing method embodiments, which will not be repeated here.

The present application also provides a communication apparatus, including at least one processor, where the at least one processor is configured to execute a computer program stored in a memory, so that the communication apparatus executes the terminal device or network device in any of the foregoing method embodiments method performed.

It should be understood that the above communication device may be one or more chips. For example, the communication device may be a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), a system on chip (SoC), or a It is a central processing unit (CPU), a network processor (NP), a digital signal processing circuit (DSP), or a microcontroller (microcontroller unit). , MCU), it can also be a programmable logic device (PLD) or other integrated chips.

The embodiments of the present application also provide a communication apparatus, including a processor and a communication interface. The communication interface is coupled with the processor. The communication interface is used to input and/or output information. The information includes at least one of instructions and data. The processor is configured to execute a computer program, so that the communication apparatus executes the method executed by the terminal device or the network device in any of the foregoing method embodiments.

An embodiment of the present application also provides a communication device, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that the communication apparatus executes the method performed by the terminal device or the network device in any of the above method embodiments.

In the implementation process, each step of the above-mentioned method can be completed by a hardware integrated logic circuit in a processor or an instruction in the form of software. The steps of the methods disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware processor, or executed by a combination of hardware and software modules in the processor. The software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art. The storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware. To avoid repetition, detailed description is omitted here.

It should be noted that the processor in this embodiment of the present application may be an integrated circuit chip, which has a signal processing capability. In the implementation process, each step of the above method embodiments may be completed by a hardware integrated logic circuit in a processor or an instruction in the form of software. The aforementioned processors may be general purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components . The methods, steps, and logic block diagrams disclosed in the embodiments of this application can be implemented or executed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art. The storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.

It can be understood that the memory in this embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically programmable Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory. Volatile memory may be random access memory (RAM), which acts as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (synchlink DRAM, SLDRAM) ) and direct memory bus random access memory (direct rambus RAM, DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but not be limited to, these and any other suitable types of memory.

According to the method provided by the embodiment of the present application, the present application further provides a computer program product, the computer program product includes: computer program code, when the computer program code is run on a computer, the computer is made to execute the steps shown in FIGS. 2 to 9 . The method performed by the terminal device or the method performed by the network device in the exemplary embodiment.

According to the methods provided by the embodiments of the present application, the present application further provides a computer-readable storage medium, where the computer-readable storage medium stores program codes, and when the program codes are run on a computer, the computer is made to execute FIGS. 2 to 2 . 9. The method performed by the terminal device or the method performed by the network device in the embodiment shown in 9.

According to the method provided by the embodiment of the present application, the present application further provides a system, which includes the aforementioned one or more terminal devices and one or more network devices.

The network equipment in each of the above apparatus embodiments completely corresponds to the terminal equipment and the network equipment or terminal equipment in the method embodiments, and corresponding steps are performed by corresponding modules or units. For the sending step, other steps except sending and receiving may be performed by a processing unit (processor). For functions of specific units, reference may be made to corresponding method embodiments. The number of processors may be one or more.

In the above embodiments, the terminal device may be used as an example of a receiving device, and the network device may be used as an example of a sending device. However, this should not constitute any limitation to this application. For example, the sending device and the receiving device may both be terminal devices or the like. This application does not limit the specific types of the sending device and the receiving device.

The terms "component", "module", "system" and the like are used in this specification to refer to a computer-related entity, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a component may be, but is not limited to, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and/or a computer. By way of illustration, both an application running on a computing device and the computing device may be components. One or more components may reside within a process and/or thread of execution, and a component may be localized on one computer and/or distributed between 2 or more computers. In addition, these components can execute from various computer readable media having various data structures stored thereon. A component may, for example, be based on a signal having one or more data packets (eg, data from two components interacting with another component between a local system, a distributed system, and/or a network, such as the Internet interacting with other systems via signals) Communicate through local and/or remote processes.

Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the system, device and unit described above may refer to the corresponding process in the foregoing method embodiments, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution, and the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program codes .

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited to this. should be covered within the scope of protection of this application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (19)

1. A method for switching frequency domain bandwidth in a cell, comprising:

   The network device transfers the terminal device from a first cell to a second cell, where the second cell is established based on a second frequency domain bandwidth resource corresponding to the first cell determined in the first frequency domain bandwidth resource;

   The network device establishes a third cell based on the first cell, wherein the third frequency domain bandwidth resource corresponding to the third cell and the first frequency domain bandwidth resource have an intersection, and the intersection is the first frequency domain bandwidth resource. A frequency domain bandwidth resource and a set of the third frequency domain bandwidth resource having the same frequency domain bandwidth resource;

   The network device transfers the terminal device from the second cell to the third cell.
2. The method according to claim 1, wherein the method further comprises:

   When the cell load of the first cell is less than the first threshold, the network device determines the second frequency domain bandwidth resource in the first frequency domain bandwidth resource, and stops at the second frequency domain bandwidth scheduling the terminal equipment on resources;

   The network device establishes the second cell based on the second frequency domain bandwidth resource, wherein the second cell is prohibited from being accessed by terminal equipment outside the cell, and the terminal equipment outside the cell does not belong to the corresponding first cell service area;

   or,

   When the cell load of the first cell is greater than the second threshold, the network device determines the second frequency domain bandwidth resource in the first frequency domain bandwidth resource, and stops at the second frequency domain bandwidth scheduling the terminal equipment on resources;

   The network device establishes the second cell based on the second frequency domain bandwidth resource, wherein the second cell is prohibited from being accessed by terminal equipment outside the cell, and the terminal equipment outside the cell does not belong to the corresponding first cell service area.
3. The method according to claim 1, wherein before the network device transfers the terminal device from the first cell to the second cell, the method further comprises:

   sending, by the network device, a first message to the terminal device, wherein the first message instructs the terminal device to perform inter-frequency measurement on channel resources of the second cell;

   When the first inter-frequency measurement result is greater than or equal to the third threshold, the network device receives the first inter-frequency measurement result sent by the terminal device, wherein the first inter-frequency measurement result is a The channel resources of the second cell are obtained after performing inter-frequency measurement.
4. The method according to claim 1, wherein after the network device establishes a third cell based on the first cell, and the network device transfers the terminal device from the second cell to the second cell Before the third cell, the method further includes:

   sending, by the network device, a second message to the terminal device, wherein the second message instructs the terminal device to perform inter-frequency measurement on channel resources of the third cell;

   When the second inter-frequency measurement result is greater than or equal to the fourth threshold, the network device receives the second inter-frequency measurement result sent by the terminal device, wherein the second inter-frequency measurement result is a The channel resources of the third cell are obtained after performing inter-frequency measurement.
5. A method for switching frequency domain bandwidth in a cell, comprising:

   The terminal device is transferred from a first cell to a second cell, where the second cell is established based on a second frequency domain bandwidth resource, and the second frequency domain bandwidth resource is a first frequency domain corresponding to the first cell. determined in the domain bandwidth resource;

   The terminal device is transferred from the second cell to a third cell, where the third cell is established based on the first cell, and the third frequency domain bandwidth resource corresponding to the third cell is the same as the third cell. A frequency domain bandwidth resource has an intersection, and the intersection is a set of the first frequency domain bandwidth resource and the third frequency domain bandwidth resource having the same frequency domain bandwidth resource.
6. The method according to claim 5, wherein before the terminal equipment is transferred from the first cell to the second cell, the method further comprises:

   receiving, by the terminal device, the first message sent by the network device;

   The terminal device performs inter-frequency measurement on the channel resources of the second cell according to the first message, to obtain a first inter-frequency measurement result;

   When the first inter-frequency measurement result is greater than or equal to a third threshold, the terminal device sends the first inter-frequency measurement result to the network device.
7. The method according to claim 5, wherein the method is performed after the terminal equipment is transferred from the first cell to the second cell and before the terminal equipment is transferred from the second cell to the third cell Also includes:

   receiving, by the terminal device, a second message sent by the network device;

   The terminal device performs inter-frequency measurement on the channel resources of the third cell according to the second message, to obtain a second inter-frequency measurement result;

   When the second inter-frequency measurement result is greater than or equal to a fourth threshold, the terminal device sends the second inter-frequency measurement result to the network device.
8. A communication device, comprising:

   A processing module configured to transfer the terminal device from a first cell to a second cell, wherein the second cell is established based on a second frequency domain bandwidth resource, and the second frequency domain bandwidth resource is determined in the first frequency domain bandwidth resource corresponding to the cell;

   The processing module is further configured to establish a third cell based on the first cell, wherein the third frequency domain bandwidth resource corresponding to the third cell has an intersection with the first frequency domain bandwidth resource, and the intersection is The first frequency domain bandwidth resource and the third frequency domain bandwidth resource have a set of the same frequency domain bandwidth resource;

   The processing module is further configured to transfer the terminal device from the second cell to the third cell.
9. The communication device according to claim 8, wherein the processing module is further configured to determine, in the first frequency domain bandwidth resource, when the cell load of the first cell is less than a first threshold value. the second frequency domain bandwidth resource, and stop scheduling the terminal device on the second frequency domain bandwidth resource;

   The processing module is further configured to establish the second cell based on the second frequency domain bandwidth resource, wherein the second cell is prohibited from being accessed by terminal equipment outside the cell, and the terminal equipment outside the cell does not belong to the the service area corresponding to the first cell;

   or,

   The processing module is further configured to determine the second frequency domain bandwidth resource in the first frequency domain bandwidth resource when the cell load of the first cell is greater than a second threshold, and stop at the first frequency domain bandwidth resource. The terminal equipment is scheduled on the second frequency domain bandwidth resource;

   The processing module is further configured to establish the second cell based on the second frequency domain bandwidth resource, wherein the second cell is prohibited from being accessed by terminal equipment outside the cell, and the terminal equipment outside the cell does not belong to the The service area corresponding to the first cell.
10. The communication device according to claim 8, wherein the communication device further comprises a transceiver module;

    The transceiver module is configured to send a first message to the terminal device before the processing module transfers the terminal device from the first cell to the second cell, wherein the first message instructs the terminal device to performing inter-frequency measurement on the channel resources of the second cell;

    The transceiver module is further configured to receive the first inter-frequency measurement result sent by the terminal device when the first inter-frequency measurement result is greater than or equal to a third threshold, wherein the first inter-frequency measurement result is obtained after performing inter-frequency measurement on the channel resources of the second cell.
11. The communication apparatus according to claim 8, wherein the transceiver module is further configured to, after the processing module establishes a third cell based on the first cell, and the processing module switches the terminal device from before the second cell is transferred to the third cell, sending a second message to the terminal device, wherein the second message instructs the terminal device to perform inter-frequency measurement on channel resources of the third cell;

    The transceiver module is further configured to receive the second inter-frequency measurement result sent by the terminal device when the second inter-frequency measurement result is greater than or equal to a fourth threshold, wherein the second inter-frequency measurement result is obtained after performing inter-frequency measurement on the channel resources of the third cell.
12. A communication device, comprising:

    A processing module, configured to transfer from a first cell to a second cell, wherein the second cell is established based on a second frequency domain bandwidth resource, and the second frequency domain bandwidth resource is corresponding to the first cell determined in the first frequency domain bandwidth resource;

    The processing module is further configured to transfer from the second cell to a third cell, where the third cell is established based on the first cell, and a third frequency domain bandwidth resource corresponding to the third cell There is an intersection with the first frequency domain bandwidth resource, and the intersection is a set of the first frequency domain bandwidth resource and the third frequency domain bandwidth resource having the same frequency domain bandwidth resource.
13. The communication device according to claim 12, wherein the communication device further comprises a transceiver module;

    the transceiver module, configured to receive the first message sent by the network device before transferring from the first cell to the second cell;

    The processing module is further configured to perform inter-frequency measurement on the channel resources of the second cell according to the first message to obtain a first inter-frequency measurement result;

    The transceiver module is further configured to send the first inter-frequency measurement result to the network device when the first inter-frequency measurement result is greater than or equal to a third threshold.
14. The communication device according to claim 12, wherein the transceiver module is further configured to receive the received data after the transfer from the first cell to the second cell and before the transfer from the second cell to the third cell. the second message sent by the network device;

    The processing module is further configured to perform inter-frequency measurement on the channel resources of the third cell according to the second message to obtain a second inter-frequency measurement result;

    The transceiver module is further configured to send the second inter-frequency measurement result to the network device when the second inter-frequency measurement result is greater than or equal to a fourth threshold.
15. A network device, characterized in that it includes:

    processor, memory, input and output interface;

    the processor is coupled to the memory and the input-output interface;

    The processor performs the method of any one of claims 1 to 4 by running code in the memory.
16. A terminal device, characterized in that it includes:

    processor, memory, input and output interface;

    the processor is coupled to the memory and the input-output interface;

    The processor performs the method of any one of claims 5 to 7 by running code in the memory.
17. A chip, characterized in that the chip includes at least one processor, the at least one processor is connected in communication with at least one memory, and the at least one memory stores instructions; the instructions are processed by the at least one processor The method of any one of claims 1 to 4 is performed, or, the method of any one of claims 5 to 7 is performed.
18. A computer-readable storage medium containing instructions that, when executed on a computer, cause the computer to execute the method of any one of claims 1 to 4, or to execute any one of claims 5 to 7 method described in item.
19. A communication system, comprising a network device and a terminal device, the network device executes the method according to any one of claims 1 to 4, and the terminal device executes the method according to any one of claims 5 to 7 method.

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