CN117119558A

CN117119558A - Communication method and device

Info

Publication number: CN117119558A
Application number: CN202210516035.5A
Authority: CN
Inventors: 胡丹; 刘烨
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2022-05-12
Filing date: 2022-05-12
Publication date: 2023-11-24
Also published as: WO2023216929A1

Abstract

The application provides a communication method and device. The method comprises the following steps: the terminal equipment accesses the first cell by the first channel bandwidth, receives the second information after sending the first information, and accesses the second cell by the first channel bandwidth. Wherein the first information is used to indicate that the terminal device supports access to the second cell with the first channel bandwidth. Or, the minimum guard bandwidth corresponding to the first channel bandwidth indicated to be supported is not greater than the minimum guard bandwidth corresponding to the second channel bandwidth. The second channel bandwidth is greater than the first channel bandwidth. The second information is used for indicating the terminal equipment to access the second cell and the first channel bandwidth or the carrier bandwidth corresponding to the second channel bandwidth. The carrier bandwidth is the carrier bandwidth corresponding to the second cell, and the frequency band corresponding to the first cell and the frequency band corresponding to the second cell belong to the same working frequency band. Based on the scheme of the application, the terminal equipment supporting large bandwidth can fully utilize the frequency spectrum resource, and is compatible with other terminal equipment, thereby improving the performance of the system.

Description

Communication method and device

Technical Field

The present application relates to the field of communications, and more particularly, to a method and apparatus for communications.

Background

In the frequency range 1 (frequency range 1, fr 1) of the current new air interface (NR) system, an operator performs 5G NR service by acquiring a frequency band of downlink 758 MHz-788 MHz and uplink 703 MHz-733 MHz in the operating frequency band n 28. For the extension of 5G NR service, operators are expected to acquire the frequency band of 788 MHz-798 MHz at n28, i.e. operators will use 40MHz of spectrum resources in n 28. However, for high-capacity terminal devices, it can fully utilize the spectrum resources of the network device, and for terminal devices that cannot utilize the new added frequency band in the communication system, there is a problem of backward compatibility. Therefore, how to make the high-capacity terminal equipment fully utilize the spectrum resources and ensure the normal operation of other terminal equipment is a problem to be solved.

Disclosure of Invention

The application provides a communication method and a communication device, which can improve the performance of a system.

In a first aspect, an embodiment of the present application provides a method of communication. The method may be performed by the terminal device or by a component in the terminal device (e.g., a chip or a system-on-chip, etc.), as the application is not limited in this respect. The method comprises the following steps: the terminal device accesses the first cell with a first channel bandwidth. The terminal device sends first information, wherein the first information is used for indicating that the terminal device supports to access a second cell with the first channel bandwidth. Or, the first information is used for indicating that the minimum protection bandwidth corresponding to the first channel bandwidth supported by the terminal device is not greater than the minimum protection bandwidth corresponding to a second channel bandwidth, where the second channel bandwidth is greater than the first channel bandwidth. The terminal equipment receives second information, wherein the second information is used for indicating the terminal equipment to access the second cell, the second information is also used for indicating the first channel bandwidth or the carrier bandwidth corresponding to the second channel bandwidth, the carrier bandwidth is the carrier bandwidth corresponding to the second cell, and the frequency band corresponding to the first cell and the frequency band corresponding to the second cell belong to the same working frequency band. The terminal device accesses the second cell with a first channel bandwidth.

Based on the scheme, according to the capability information of accessing the large system bandwidth cell with the small service bandwidth, which is reported by the terminal equipment, the terminal equipment can use the system to configure the large bandwidth cell, thereby achieving the effect of backward compatibility of the system and further improving the performance of the system.

With reference to the first aspect, in certain implementation manners of the first aspect, the first information is further used to indicate that the terminal device supports the second channel bandwidth.

Based on the scheme, after the terminal equipment reports the capability information supporting the large service bandwidth, the small service bandwidth is used for accessing the large system bandwidth cell. Namely, the terminal equipment can be accessed through the small bandwidth while having the capability of supporting the large bandwidth and the small bandwidth, so that the access of the terminal equipment is more flexible.

With reference to the first aspect, in certain implementations of the first aspect, the first frequency range is different from the second frequency range. The first frequency range is a frequency range corresponding to the first channel bandwidth when the terminal equipment accesses the second cell, and the second frequency range is a frequency range corresponding to the first channel bandwidth when the terminal equipment accesses the first cell.

With reference to the first aspect, in certain implementation manners of the first aspect, the second information is used to instruct the terminal device to access a second cell, including: the second information is used to instruct the terminal device to switch from the first cell to the second cell.

With reference to the first aspect, in certain implementations of the first aspect, the second cell is a secondary cell of the first cell. The second information is used for indicating the terminal equipment to access a second cell, and includes: the second information is used for indicating the terminal equipment to access the auxiliary cell of the first cell.

With reference to the first aspect, in certain implementations of the first aspect, the first information is carried in a maximum power back-off message of the terminal device.

In a second aspect, embodiments of the present application provide a method of communication. The method may be performed by a network device or by a component in a network device (e.g., a chip or a system-on-chip, etc.), as the application is not limited in this respect. The method comprises the following steps: the network device receives first information indicating that the terminal device supports access to the second cell with the first channel bandwidth. Or, the first information is used for indicating that the minimum protection bandwidth corresponding to the first channel bandwidth supported by the terminal device is not greater than the minimum protection bandwidth corresponding to a second channel bandwidth, where the second channel bandwidth is greater than the first channel bandwidth. The network device sends second information, where the second information is used to instruct the terminal device accessing to a first cell to access to the second cell, and the second information is further used to instruct the first channel bandwidth or a carrier bandwidth corresponding to the second channel bandwidth, where the carrier bandwidth is a carrier bandwidth corresponding to the second cell, and a frequency band corresponding to the first cell and a frequency band corresponding to the second cell belong to the same working frequency band. Based on the above scheme, the network device reconfigures the access cell (second cell) for the terminal device according to the first information reported by the terminal device, so that the terminal device reporting the first information can access the second cell with large bandwidth. By the method, for the terminal equipment only supporting small bandwidth, the second information can indicate the terminal equipment to access the second cell by the first channel bandwidth, and for the terminal equipment with high capacity, the second information can indicate the terminal equipment to access the second cell by the first channel bandwidth or the second channel bandwidth, namely, the method can both support the terminal equipment only supporting small bandwidth and is suitable for the terminal equipment with high capacity to access the cell with large bandwidth, and for the network system with expanded bandwidth, the method improves the efficiency and reliability of the terminal equipment to access the second cell.

With reference to the second aspect, in some implementations of the second aspect, the first information is further used to indicate that the terminal device supports the second channel bandwidth.

Based on the scheme, for the terminal equipment with high capacity, the terminal equipment can not only select to access the second cell by the first channel bandwidth, but also access the second cell by the second channel bandwidth, so that the channel bandwidth can be flexibly switched when the terminal equipment accesses the cell.

With reference to the second aspect, in certain implementations of the second aspect, the first frequency range is different from the second frequency range. The first frequency range is a frequency range corresponding to the first channel bandwidth when the terminal equipment accesses the second cell, and the second frequency range is a frequency range corresponding to the first channel bandwidth when the terminal equipment accesses the first cell.

With reference to the second aspect, in some implementations of the second aspect, the second information is used to instruct the terminal device accessing the first cell to access the second cell, including: the second information is used to instruct the terminal device to switch from the first cell to the second cell.

With reference to the second aspect, in certain implementations of the second aspect, the second cell is a secondary cell of the first cell. The second information is used for indicating the terminal equipment accessed to the first cell to access the second cell, and comprises the following steps: the second information is used for indicating the terminal equipment to access the auxiliary cell of the first cell.

With reference to the second aspect, in certain implementations of the second aspect, the first information is carried in a maximum power back-off message of the terminal device.

In a third aspect, an embodiment of the present application provides an apparatus for communication. The device comprises: the device comprises a processing module and a receiving and transmitting module. The processing module is used for accessing the first cell with the first channel bandwidth and accessing the second cell with the first channel bandwidth. The transceiver module is configured to send first information, where the first information is used to instruct the processing module to support accessing the second cell with the first channel bandwidth. Or, the first information is used for indicating that the minimum protection bandwidth corresponding to the first channel bandwidth supported by the processing module is not greater than the minimum protection bandwidth corresponding to a second channel bandwidth, where the second channel bandwidth is greater than the first channel bandwidth. The transceiver module is further configured to receive second information, where the second information is used to instruct the processing module to access the second cell, and the second information is further used to instruct the first channel bandwidth or a carrier bandwidth corresponding to the second channel bandwidth, where the carrier bandwidth is a carrier bandwidth corresponding to the second cell, and a frequency band corresponding to the first cell and a frequency band corresponding to the second cell belong to the same working frequency band.

With reference to the third aspect, in some implementations of the third aspect, the first information is further used to instruct the processing module to support the second channel bandwidth.

With reference to the third aspect, in certain implementations of the third aspect, the first frequency range is different from the second frequency range. The first frequency range is a frequency range corresponding to the first channel bandwidth when the processing module accesses the second cell, and the second frequency range is a frequency range corresponding to the first channel bandwidth when the processing module accesses the first cell.

With reference to the third aspect, in some implementations of the third aspect, the second information is used to instruct the processing module to access a second cell, including: the second information is used to instruct the processing module to switch from the first cell to the second cell.

With reference to the third aspect, in certain implementations of the third aspect, the second cell is a secondary cell of the first cell. The second information is used for indicating the processing module to access a second cell, and includes: the second information is used for indicating the processing module to access the auxiliary cell of the first cell.

With reference to the third aspect, in certain implementations of the third aspect, the first information is carried in a maximum power back-off message of the apparatus.

In a fourth aspect, an embodiment of the present application provides a communication apparatus. The device comprises: and a transceiver module. The transceiver module is configured to receive first information, where the first information is used to instruct a terminal device to support accessing a second cell with a first channel bandwidth. Or, the first information is used for indicating that the minimum protection bandwidth corresponding to the first channel bandwidth supported by the terminal device is not greater than the minimum protection bandwidth corresponding to a second channel bandwidth, where the second channel bandwidth is greater than the first channel bandwidth. The transceiver module is further configured to send second information, where the second information is used to instruct the terminal device accessing to the first cell to access the second cell, and the second information is further used to instruct the first channel bandwidth or a carrier bandwidth corresponding to the second channel bandwidth, where the carrier bandwidth is a carrier bandwidth corresponding to the second cell, and a frequency band corresponding to the first cell and a frequency band corresponding to the second cell belong to the same working frequency band.

With reference to the fourth aspect, in some implementations of the fourth aspect, the first information is further used to indicate that the terminal device supports the second channel bandwidth.

With reference to the fourth aspect, in some implementations of the fourth aspect, the first frequency range is different from the second frequency range. The first frequency range is a frequency range corresponding to the first channel bandwidth when the terminal equipment accesses the second cell, and the second frequency range is a frequency range corresponding to the first channel bandwidth when the terminal equipment accesses the first cell.

With reference to the fourth aspect, in some implementations of the fourth aspect, the second information is used to instruct the terminal device accessing the first cell to access the second cell, including: the second information is used to instruct the terminal device to switch from the first cell to the second cell.

With reference to the fourth aspect, in some implementations of the fourth aspect, the second cell is a secondary cell of the first cell. The second information is used for indicating the terminal equipment accessed to the first cell to access the second cell, and comprises the following steps: the second information is used for indicating the terminal equipment to access the auxiliary cell of the first cell.

With reference to the fourth aspect, in some implementations of the fourth aspect, the first information is carried in a maximum power back-off message of the terminal device.

In a fifth aspect, an embodiment of the present application provides a communication method. The method may be performed by the terminal device or by a component in the terminal device (e.g., a chip or a system-on-chip, etc.), as the application is not limited in this respect. The method comprises the following steps: the terminal equipment accesses a first cell in a first frequency range; the terminal equipment sends first information; the terminal equipment receives second information, wherein the second information is used for indicating the terminal equipment to access the second cell, and the second cell corresponds to a second frequency range; the terminal equipment accesses the second cell.

Based on the scheme, the network equipment can set the second cells with different frequencies for the specific terminal equipment through the first information reported by the terminal equipment, can be applied to the network system with the expanded bandwidth, can consider various terminal equipment in the network system, and ensures the stability of the network system and the reliability of communication.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the first information is used to indicate that a frequency range supported by the terminal device exceeds the first frequency range; or, the first information is used for indicating that the frequency range supported by the terminal equipment includes the second frequency range; or, the first information is used for indicating the terminal device to support that when the first channel bandwidth is applied/the corresponding protection bandwidth is not greater than the minimum protection bandwidth corresponding to the second channel bandwidth and the radio frequency index is met, the first channel bandwidth is the channel bandwidth corresponding to the first frequency range, the second channel bandwidth is greater than the first channel bandwidth, and the minimum protection bandwidth corresponding to the second channel bandwidth is less than the minimum protection bandwidth corresponding to the first channel bandwidth;

With reference to the fifth aspect, in some implementations of the fifth aspect, the first frequency range is different from the second frequency range, where the first frequency range is a frequency range corresponding to the first channel bandwidth when the terminal device accesses the first cell, and the second frequency range is a frequency range corresponding to the first channel bandwidth when the terminal device accesses the second cell.

With reference to the fifth aspect, in some implementations of the fifth aspect, the first frequency range is different from the second frequency range, where the first frequency range is a frequency range corresponding to the first channel bandwidth when the terminal device accesses the first cell, and the second frequency range is a frequency range corresponding to the second channel bandwidth when the terminal device accesses the second cell.

With reference to the fifth aspect, in some implementations of the fifth aspect, the first frequency range is different from the second frequency range, where the first frequency range is a frequency range corresponding to the first channel bandwidth when the terminal device accesses the first cell, and the second frequency range is greater than a frequency range corresponding to a third channel bandwidth when the terminal device accesses the second cell; and when the first information is used for indicating the terminal equipment to support that the first channel bandwidth application/corresponding protection bandwidth is not larger than the minimum protection bandwidth corresponding to the second channel bandwidth and the radio frequency index is met, the minimum protection bandwidth corresponding to the third channel bandwidth is not larger than the first channel bandwidth application/corresponding protection bandwidth.

With reference to the fifth aspect, in certain implementation manners of the fifth aspect, the second information is used to instruct the terminal device to access a second cell, including: the second information is used to instruct the terminal device to switch from the first cell to the second cell.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the second cell is a secondary cell of the first cell, where the second information is used to instruct the terminal device to access the second cell, including: the second information is used for indicating the terminal equipment to access the auxiliary cell of the first cell.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the first information is carried in a maximum power back-off message of the terminal device.

In a sixth aspect, an embodiment of the present application provides a communication method. The method may be performed by a network device or by a component in a network device (e.g., a chip or a system-on-chip, etc.), as the application is not limited in this respect. The method comprises the following steps: the network equipment receives first information; the network device sends second information, the second information is used for indicating the terminal device accessed to the first cell to access the second cell, the second cell corresponds to a second frequency range, and the first frequency range is the frequency range of the terminal device accessed to the first cell.

Based on the scheme, the network equipment gives consideration to various terminal equipment in the network system through the first information, and the stability of the network system and the reliability of communication are ensured.

With reference to the sixth aspect, in certain implementations of the sixth aspect, the first information is used to indicate that a frequency range supported by the terminal device exceeds the first frequency range; or, the first information is used for indicating that the frequency range supported by the terminal equipment includes the second frequency range; or, the first information is used for indicating the terminal device to support that when the first channel bandwidth is applied/the corresponding protection bandwidth is not greater than the minimum protection bandwidth corresponding to the second channel bandwidth and the radio frequency index is met, the first channel bandwidth is the channel bandwidth corresponding to the first frequency range, the second channel bandwidth is greater than the first channel bandwidth, and the minimum protection bandwidth corresponding to the second channel bandwidth is less than the minimum protection bandwidth corresponding to the first channel bandwidth;

with reference to the sixth aspect, in some implementations of the sixth aspect, the first frequency range is different from the second frequency range, where the first frequency range is a frequency range corresponding to the first channel bandwidth when the terminal device accesses the first cell, and the second frequency range is a frequency range corresponding to the first channel bandwidth when the terminal device accesses the second cell.

With reference to the sixth aspect, in some implementations of the sixth aspect, the first frequency range is different from the second frequency range, where the first frequency range is a frequency range corresponding to the first channel bandwidth when the terminal device accesses the first cell, and the second frequency range is a frequency range corresponding to the second channel bandwidth when the terminal device accesses the second cell.

With reference to the sixth aspect, in some implementations of the sixth aspect, the first frequency range is different from the second frequency range, where the first frequency range is a frequency range corresponding to the first channel bandwidth when the terminal device accesses the first cell, and the second frequency range is greater than a frequency range corresponding to a third channel bandwidth when the terminal device accesses the second cell; and when the first information is used for indicating the terminal equipment to support that the first channel bandwidth application/corresponding protection bandwidth is not larger than the minimum protection bandwidth corresponding to the second channel bandwidth and the radio frequency index is met, the minimum protection bandwidth corresponding to the third channel bandwidth is not larger than the first channel bandwidth application/corresponding protection bandwidth.

With reference to the sixth aspect, in some implementations of the sixth aspect, the second information is used to instruct the terminal device to access a second cell, including: the second information is used to instruct the terminal device to switch from the first cell to the second cell.

With reference to the sixth aspect, in certain implementations of the sixth aspect, the second cell is a secondary cell of the first cell, where the second information is used to instruct the terminal device to access the second cell, including: the second information is used for indicating the terminal equipment to access the auxiliary cell of the first cell.

With reference to the sixth aspect, in certain implementations of the sixth aspect, the first information is carried in a maximum power back-off message of the terminal device.

In a seventh aspect, an embodiment of the present application provides a communication apparatus. The device comprises: the device comprises a processing module and a receiving and transmitting module. The processing module is used for accessing the first cell in a first frequency range and accessing the second cell. The transceiver module is configured to send first information and receive second information, where the second information is used to instruct the processing module to access the second cell, and the second cell corresponds to a second frequency range.

With reference to the seventh aspect, in certain implementations of the seventh aspect, the first information is used to indicate that a frequency range supported by the processing module exceeds the first frequency range; alternatively, the first information is used to indicate that the frequency range supported by the processing module includes the second frequency range; or, the first information is used to instruct the processing module to support the channel bandwidth corresponding to the first frequency range when the first channel bandwidth is applied/the corresponding protection bandwidth is not greater than the minimum protection bandwidth corresponding to the second channel bandwidth and the radio frequency index is met, the second channel bandwidth is greater than the first channel bandwidth, and the minimum protection bandwidth corresponding to the second channel bandwidth is less than the minimum protection bandwidth corresponding to the first channel bandwidth.

With reference to the seventh aspect, in certain implementations of the seventh aspect, the first frequency range is different from the second frequency range, where the first frequency range is a frequency range corresponding to the first channel bandwidth when the processing module accesses the first cell, and the second frequency range is a frequency range corresponding to the first channel bandwidth when the processing module accesses the second cell.

With reference to the seventh aspect, in some implementations of the seventh aspect, the first frequency range is different from the second frequency range, where the first frequency range is a frequency range corresponding to the first channel bandwidth when the processing module accesses the first cell, and the second frequency range is a frequency range corresponding to the second channel bandwidth when the processing module accesses the second cell.

With reference to the seventh aspect, in certain implementations of the seventh aspect, the first frequency range is different from the second frequency range, where the first frequency range is a frequency range corresponding to the first channel bandwidth when the processing module accesses the first cell, and the second frequency range is greater than a frequency range corresponding to a third channel bandwidth when the processing module accesses the second cell; and when the first information is used for indicating the processing module to support that the first channel bandwidth application/corresponding protection bandwidth is not greater than the minimum protection bandwidth corresponding to the second channel bandwidth and the radio frequency index is met, the minimum protection bandwidth corresponding to the third channel bandwidth is not greater than the first channel bandwidth application/corresponding protection bandwidth.

With reference to the seventh aspect, in certain implementations of the seventh aspect, the second information is used to instruct the processing module to access a second cell, including: the second information is used to instruct the processing module to switch from the first cell to the second cell.

With reference to the seventh aspect, in certain implementations of the seventh aspect, the second cell is a secondary cell of the first cell, where the second information is used to instruct the processing module to access the second cell, including: the second information is used for indicating the processing module to access the auxiliary cell of the first cell.

With reference to the seventh aspect, in certain implementations of the seventh aspect, the first information is carried in a maximum power back-off message of the apparatus.

In an eighth aspect, an embodiment of the present application provides a communication apparatus. The device comprises: and a transceiver module. The transceiver module is configured to receive first information and send second information, where the second information is used to instruct a terminal device that accesses to a first cell to access to a second cell, the second cell corresponds to a second frequency range, and the first frequency range is a frequency range where the terminal device accesses to the first cell.

With reference to the eighth aspect, in certain implementations of the eighth aspect, the first information is used to indicate that a frequency range supported by the terminal device exceeds the first frequency range; or, the first information is used for indicating that the frequency range supported by the terminal equipment includes the second frequency range; or, the first information is used to instruct the terminal device to support the channel bandwidth corresponding to the first frequency range when the first channel bandwidth is applied/the corresponding protection bandwidth is not greater than the minimum protection bandwidth corresponding to the second channel bandwidth and the radio frequency index is met, the second channel bandwidth is greater than the first channel bandwidth, and the minimum protection bandwidth corresponding to the second channel bandwidth is less than the minimum protection bandwidth corresponding to the first channel bandwidth.

With reference to the eighth aspect, in some implementations of the eighth aspect, the first frequency range is different from the second frequency range, where the first frequency range is a frequency range corresponding to the first channel bandwidth when the terminal device accesses the first cell, and the second frequency range is a frequency range corresponding to the first channel bandwidth when the terminal device accesses the second cell.

With reference to the eighth aspect, in some implementations of the eighth aspect, the first frequency range is different from the second frequency range, where the first frequency range is a frequency range corresponding to the first channel bandwidth when the terminal device accesses the first cell, and the second frequency range is a frequency range corresponding to the second channel bandwidth when the terminal device accesses the second cell.

With reference to the eighth aspect, in some implementations of the eighth aspect, the first frequency range is different from the second frequency range, where the first frequency range is a frequency range corresponding to the first channel bandwidth when the terminal device accesses the first cell, and the second frequency range is greater than a frequency range corresponding to a third channel bandwidth when the terminal device accesses the second cell; and when the first information is used for indicating the terminal equipment to support that the first channel bandwidth application/corresponding protection bandwidth is not larger than the minimum protection bandwidth corresponding to the second channel bandwidth and the radio frequency index is met, the minimum protection bandwidth corresponding to the third channel bandwidth is not larger than the first channel bandwidth application/corresponding protection bandwidth.

With reference to the eighth aspect, in certain implementation manners of the eighth aspect, the second information is used to instruct the terminal device accessing the first cell to access the second cell, including: the second information is used to instruct the terminal device to switch from the first cell to the second cell.

With reference to the eighth aspect, in certain implementation manners of the eighth aspect, the second cell is a secondary cell of the first cell, where the second information is used to instruct the terminal device accessing the first cell to access the second cell, and includes: the second information is used for indicating the terminal equipment to access the auxiliary cell of the first cell.

With reference to the eighth aspect, in certain implementations of the eighth aspect, the first information is carried in a maximum power back-off message of the terminal device.

In a ninth aspect, an embodiment of the present application provides a communication apparatus. The apparatus comprises a processor coupled to a memory, the memory storing instructions that when executed by the processor cause the processor to perform the method of the first aspect, or any one of the possible implementations of the first aspect, or cause the processor to perform the method of the second aspect, or any one of the possible implementations of the second aspect, or cause the processor to perform the method of the fifth aspect, or any one of the possible implementations of the fifth aspect, or cause the processor to perform the method of the sixth aspect, or any one of the possible implementations of the sixth aspect.

In a tenth aspect, embodiments of the present application provide a communication apparatus. The apparatus comprises logic circuitry to couple with an input/output interface through which data is transferred to perform the method of the first aspect, or any one of the possible implementations of the first aspect, or to perform the method of the second aspect, or any one of the possible implementations of the second aspect, or to perform the method of the fifth aspect, or any one of the possible implementations of the sixth aspect.

In an eleventh aspect, embodiments of the present application provide a computer-readable storage medium. The computer readable storage medium is for storing a computer program which, when run on a computer, causes the computer to perform the method of the first aspect, or any one of the possible implementations of the first aspect, or causes the computer to perform the method of the second aspect, or any one of the possible implementations of the second aspect, or causes the computer to perform the method of the fifth aspect, or any one of the possible implementations of the fifth aspect, or causes the computer to perform the method of the sixth aspect, or any one of the possible implementations of the sixth aspect.

In a twelfth aspect, embodiments of the present application provide a computer program product. The computer program product comprises: computer program code implementing the method of the first aspect, or any of the possible implementations of the first aspect, or implementing the method of the second aspect, or any of the possible implementations of the second aspect, or implementing the method of the fifth aspect, or any of the possible implementations of the fifth aspect, or the method of any of the possible implementations of the sixth aspect, or any of the possible implementations of the sixth aspect, when said computer program code is run.

In a thirteenth aspect, an embodiment of the present application provides a chip. The chip includes a processor and a memory. The memory is configured to store a computer program, and the processor is configured to invoke and execute the computer program stored in the memory, perform the method according to the first aspect, or any of the possible implementation manners of the first aspect, or perform the method according to the second aspect, or any of the possible implementation manners of the second aspect, or perform the method according to the fifth aspect, or any of the possible implementation manners of the fifth aspect, or perform the method according to the sixth aspect, or any of the possible implementation manners of the sixth aspect.

The advantages of the third aspect, the fourth aspect, and the ninth to thirteenth aspects may be specifically referred to the description of the advantages of the first aspect or the second aspect or the fifth aspect or the sixth aspect, and are not repeated here.

Drawings

Fig. 1 is a schematic diagram of a wireless communication system suitable for use in embodiments of the present application.

Fig. 2 is a schematic diagram of another wireless communication system suitable for use with embodiments of the present application.

Fig. 3 is a schematic diagram of the relationship of channel bandwidth, transmission bandwidth, and guard bandwidth.

Fig. 4 is a schematic diagram of the guard bandwidth relationship of 30MHz and 40MHz channel bandwidths.

Fig. 5 is a schematic flow chart of a communication method 500 provided by an embodiment of the present application.

Fig. 6 is a schematic flow chart diagram of a communication method 600 provided by an embodiment of the present application.

Fig. 7 is a schematic flow chart of a communication method 700 provided by an embodiment of the present application.

Fig. 8 is a schematic flow chart diagram of a communication method 800 provided by an embodiment of the present application.

Fig. 9 is a schematic diagram of a frequency range supported by a terminal device according to an embodiment of the present application.

Fig. 10 is a schematic flow chart of a communication method 1000 provided by an embodiment of the present application.

Fig. 11 is a schematic block diagram of a communication device 10 according to an embodiment of the present application.

Fig. 12 is a schematic block diagram of a communication device 20 provided in an embodiment of the present application.

Fig. 13 is a schematic block diagram of a communication device 30 according to an embodiment of the present application.

Fig. 14 is a schematic block diagram of a communication device 40 provided in an embodiment of the present application.

Detailed Description

The technical scheme of the application will be described below with reference to the accompanying drawings.

Fig. 1 is a schematic diagram of an architecture 100 of a communication system according to an embodiment of the present application. As shown in fig. 1, the communication system 100 includes a core network device 110, an access network device 120, and at least one terminal device (e.g., terminal device 130 and terminal device 140 in fig. 1). The terminal equipment is connected with the access network equipment in a wireless mode, and the access network equipment is connected with the core network equipment in a wireless or wired mode. The core network device and the access network device may be separate physical devices, or the functions of the core network device and the logic functions of the access network device may be integrated on the same physical device, or the functions of part of the core network device and part of the access network device may be integrated on one physical device. The terminal device may be fixed in position or may be movable. Fig. 1 is only a schematic diagram, and other network devices may be further included in the communication system, for example, a wireless relay device and a wireless backhaul device may also be included, which are not shown in fig. 1.

The embodiment of the application does not limit the number of the core network equipment, the access network equipment and the terminal equipment included in the communication system. For example, fig. 2 is a schematic diagram of an architecture 200 of a communication system according to an embodiment of the present application. In the communication system 200 shown in fig. 2, a core network device 210, an access network device 220, an access network device 230, and a terminal device 240 are included.

The technical scheme of the embodiment of the application can be applied to various communication systems, such as: code division multiple access (code division multiple access, CDMA) systems, wideband code division multiple access (wideband code division multiple access, WCDMA) systems, long term evolution (long term evolution, LTE) systems, LTE frequency division duplex (frequency division duplex, FDD) systems, LTE time division duplex (time division duplex, TDD), universal mobile telecommunications system (universal mobile telecommunication system, UMTS), worldwide interoperability for microwave access (worldwide interoperability for microwave access, wiMAX) communication systems, fifth generation (5th generation,5G) systems or new air interface (NR), and future communication systems, such as 6G communication systems, etc.

In the embodiment of the present application, the access network device is an access device that the terminal device accesses to the communication system in a wireless manner, and may be a radio access network (radio access network, RAN) device, a base station NodeB, an evolved NodeB (eNB), a base station (gNB) in a 5G communication system, a transmission point, a base station in a future communication system, or an access node in a wireless fidelity (wireless fidelity, wi-Fi) system, one or a group of antenna panels (including multiple antenna panels) of the base station in the 5G system, or may also be a network node that forms the gNB or the transmission point, such as a baseband unit (BBU), a Centralized Unit (CU), or a Distributed Unit (DU), or the like. The specific technology and specific device configuration adopted by the access network device in the embodiment of the application are not limited.

In some deployments, the gNB may include CUs and DUs. The gNB may also include an active antenna unit (active antenna unit, AAU). CU realizes partial functions of gNB; the DU implements part of the functionality of the gNB. For example, the CU is responsible for handling non-real time protocols and services to implement the functions of the radio resource control (radio resource control, RRC), packet data convergence layer protocol (packet data convergence protocol, PDCP) layer. The DUs are responsible for handling physical layer protocols and real-time services to implement the functions of the radio link control (radio link control, RLC), medium access control (media access control, MAC) and Physical (PHY) layers. The AAU realizes part of physical layer processing function, radio frequency processing and related functions of the active antenna. Since the information of the RRC layer eventually becomes information of the PHY layer or is converted from the information of the PHY layer, under this architecture, higher layer signaling, such as RRC layer signaling, may also be considered to be transmitted by DUs or by DUs and AAUs. It is understood that the network device may be a device comprising one or more of a CU node, a DU node, an AAU node. In addition, the CU may be used as a network device in an access network, or may be used as a network device in a Core Network (CN), which is not limited by the present application.

In addition, the terminal device in the embodiment of the present application may refer to a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user equipment. The terminal device may also be a cellular phone, a cordless phone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a Wireless Local Loop (WLL) station, a personal digital assistant (Personal Digital Assistant, PDA), a handheld device with Wireless communication functionality, a computing device or other processing device connected to a Wireless modem, a car-mounted device, a wearable device, a terminal device in a 5G network or a terminal device in a next generation communication system (e.g. a 6G communication system), or a terminal device in a future evolved public land mobile network (Public Land Mobile Network, PLMN), etc., to which the embodiments of the present application are not limited.

The access network equipment and the terminal equipment can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; the device can be deployed on the water surface; but also on aerial planes, balloons and satellites. The embodiment of the application does not limit the application scene of the access network equipment and the terminal equipment.

It should be understood that in future communication systems, such as 6G communication systems, the above devices may still use their names in 5G communication systems, or may have other names, and embodiments of the present application are not limited in this regard. The functions of the above devices may be performed by a single device or may be performed by several devices together. In actual deployment, network elements in the core network may be deployed on the same or different physical devices, which is not limited by the embodiment of the present application. Fig. 1 or 2 are only examples, and do not limit the scope of the present application. The communication method provided by the embodiment of the present application may also relate to a network element or a device not shown in fig. 1 or fig. 2, and of course, the communication method provided by the embodiment of the present application may also include only a part of devices shown in fig. 1 or fig. 2, which is not limited by the embodiment of the present application.

The network architecture 100 or 200 applied to the embodiments of the present application is merely illustrative, and the network architecture to which the embodiments of the present application are applied is not limited thereto, and any network architecture capable of implementing the functions of the respective devices described above is applicable to the embodiments of the present application.

In the embodiment of the present application, if not specifically described, the network devices refer to access network devices. The terminal device or network device includes a hardware layer, an operating system layer running on top of the hardware layer, and an application layer running on top of the operating system layer. The hardware layer includes hardware such as a central processing unit (central processing unit, CPU), a memory management unit (memory management unit, MMU), and a memory (also referred to as a main memory). The operating system may be any one or more computer operating systems that implement business processes through processes (processes), such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a windows operating system. The application layer comprises applications such as a browser, an address book, word processing software, instant messaging software and the like. Further, the embodiment of the present application is not particularly limited to the specific structure of the execution body of the method provided in the embodiment of the present application, as long as the communication can be performed by the method provided in the embodiment of the present application by running the program recorded with the code of the method provided in the embodiment of the present application, for example, the execution body of the method provided in the embodiment of the present application may be a terminal device or a network device, or a functional module (for example, a processor, a chip, or a chip system, etc.) in the terminal device or the network device that can call the program and execute the program.

The following description is made in order to facilitate understanding of embodiments of the present application.

The words "first", "second", etc. and various numerical numbers in the first, the text description of the embodiments of the application shown below or in the drawings are merely for descriptive convenience and are not necessarily for describing particular sequences or successes and are not intended to limit the scope of the embodiments of the application. For example, in embodiments of the present application, to distinguish between different channel bandwidths, etc.

The terms "comprises," "comprising," and "having," in the context of the second, following illustrated embodiment of the present application, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements that are expressly listed or inherent to such process, method, article, or apparatus.

Third, in embodiments of the application, the words "exemplary" or "such as" are used to mean examples, illustrations, or descriptions, and embodiments or designs described as "exemplary" or "such as" should not be construed as being preferred or advantageous over other embodiments or designs. The use of the word "exemplary" or "such as" is intended to present the relevant concepts in a concrete fashion to facilitate understanding.

Fourth, in the embodiment of the present application, a cell may be referred to as a serving cell. Is described by a higher layer from the point of view of resource management or mobility management or service units. The coverage area of each network device may be divided into one or more serving cells, and the serving cells may be regarded as being composed of certain frequency domain resources. In the embodiment of the present application, the cell may be replaced by a serving cell or carrier unit (component carrier, CC, or called a component carrier, a carrier, etc.).

Fifth, in the embodiment of the present application, the channel bandwidth (channel bandwidth, CB) refers to several fixed bandwidth configurations supported by the terminal device, for example, the UE, such as 5MHz, 10MHz, etc., which are included in the corresponding operating frequency band of the terminal device. The transmission bandwidth configuration (transmission bandwidth configuration) refers to the number of Resource Blocks (RBs) actually used to transmit the content within the configured channel bandwidth of the terminal device. The transmission bandwidth configuration is contained in the channel bandwidth but not fully occupied, the remainder being guard band (guard band). A schematic diagram of the channel bandwidth, transmission bandwidth and guard bandwidth is shown in fig. 3.

Sixth, in the embodiment of the present application, point a refers to the center position of the number 0 subcarrier of the number 0 common resource block (common resource block, CRB). The CRB refers to a reference point or a scale of a Physical Resource Block (PRB) in all bandwidth parts (BWP) that uniformly index all PRBs within the entire system bandwidth.

Seventh, synchronization signal block (synchronization signal block, SSB). SSB consists of primary synchronization signal (Primary synchronization signal, PSS), secondary synchronization signal (secondary synchronization signal, SSS) and physical broadcast channel (physical broadcast channel block, PBCH). After the terminal equipment starts up and enters the NR system, the PSS is searched first, and once the PSS is detected, the PSS is synchronized to the PSS period. Meanwhile, the terminal device knows the transmission timing of the SSS. By detecting SSS, the physical-layer cell identity (PCI) of the cell is determined. The PBCH carries a master information block (master information block, MIB) containing information such as a system frame number, cell block identity, and system information block (system information block, SIB) parameter set. The terminal device acquires the rest of the system information broadcast by the network device according to the information.

Eighth, in the embodiment of the present application, the terminal device accessing to a cell with a certain channel bandwidth means that the terminal device accesses to a system bandwidth corresponding to a cell with a service bandwidth corresponding to a certain channel bandwidth, for example, the terminal device accessing to a first cell with a first channel bandwidth means that the terminal device accesses to a system bandwidth corresponding to a first cell with a service bandwidth corresponding to a first channel bandwidth.

Ninth, bandwidth part (BWP): since the transmitting or receiving capabilities of different terminal devices in the same cell in the NR may be different, the system may configure each terminal device with a corresponding bandwidth, and the bandwidth that this portion is configured for a terminal device is called BWP, on which the terminal device transmits. BWP may be a set of contiguous frequency domain resources on a carrier, and frequency domain resources occupied by different BWP may or may not overlap. The bandwidths of the frequency domain resources occupied by different BWPs may be the same or different, which is not limited by the present application.

Tenth, in the embodiment of the present application, "for indication" may include for direct indication and for indirect indication, and may also include explicit indication and implicit indication. The information indicated by a certain information (the first information described below) is called information to be indicated, and in a specific implementation process, there are various ways to indicate the information to be indicated, for example, but not limited to, the information to be indicated may be directly indicated, such as the information to be indicated itself or an index of the information to be indicated. The information to be indicated can also be indicated indirectly by indicating other information, wherein the other information and the information to be indicated have an association relation. It is also possible to indicate only a part of the information to be indicated, while other parts of the information to be indicated are known or agreed in advance. For example, the indication of the specific information may also be achieved by means of a pre-agreed (e.g., protocol-specified) arrangement sequence of the respective information, thereby reducing the indication overhead to some extent.

Currently, there is a part of terminal equipment in the communication system, which can support the 45MHz full band range of n28, and this part of terminal equipment cannot use a new band that may be acquired by an operator, for example, 788MHz to 798MHz. For forward compatibility, the network device allows a configured system bandwidth of 40MHz. However, for a terminal device that can only use a 30MHz channel bandwidth, this type of terminal device will not normally access the network because the traffic bandwidth (30 MHz) and the system bandwidth (40 MHz) of the terminal device are no longer the same. Specifically, the guard bandwidth 592.5kHz corresponding to the 30MHz channel bandwidth is greater than the guard bandwidth 552.5kHz corresponding to the 40MHz system bandwidth. As shown in fig. 4, when the terminal device accesses the 40MHz system bandwidth with the 30MHz service bandwidth, if the network device configures the initial downlink BWP at the lower edge of the frequency band, the lower edge of the 30MHz service bandwidth is lower than 758MHz because the position of the point a of the system bandwidth is consistent with the position of the frequency domain of the point a of the terminal device service bandwidth, so that the terminal device cannot access the cell. The above-described problems occur when the network device configures the terminal device-specific BWP even if the initial downlink BWP is not configured at the lower edge of the frequency band and the terminal device successfully accesses the cell.

Based on the problems, the communication method and the device provided by the embodiment of the application enable the high-capacity terminal equipment in the existing network to fully utilize the frequency spectrum resources issued by the network equipment, and simultaneously ensure the stability of the system performance.

Fig. 5 is a schematic flow chart of a communication method 500 according to an embodiment of the present application, and as shown in fig. 5, the method includes the following steps.

S501, the terminal device accesses the first cell with the first channel bandwidth.

Specifically, under the condition that prior information is not acquired, the terminal equipment blindly detects or monitors SSB sent by the network equipment on a synchronization grid (synchronization raster), after the SSB is detected, the terminal equipment acquires SIB1 borne on the MIB, acquires carrier bandwidth corresponding to a first cell issued by the network equipment through the SIB1, and accesses the first cell with the first channel bandwidth on an initial downlink BWP.

S502, the terminal equipment sends first information to the network equipment.

Specifically, the first information sent by the terminal device to the network device is used to indicate that the terminal device supports accessing the second cell with the first channel bandwidth. Or the first information sent by the terminal equipment to the network equipment is used for indicating that the protection bandwidth of the first channel bandwidth application supported by the terminal equipment is not larger than the minimum protection bandwidth corresponding to the second channel bandwidth, wherein the second channel bandwidth is larger than the first channel bandwidth, and the minimum protection bandwidth corresponding to the first channel bandwidth is larger than the minimum protection bandwidth corresponding to the second channel bandwidth.

Optionally, the first information is further used to instruct the terminal device to support the second channel bandwidth.

In one implementation, the first information may be carried in a maximum power back-off (maximum output power reduction, MPR) message.

For example, the first information may be indicated with a field, a bit, a bitmap (bitmap), a code bit (code), or a state (state) where MPR is not defined.

S503, the network device sends the second information to the terminal device.

Specifically, after receiving the first information sent by the terminal device, the network device accesses the second cell with the first channel bandwidth according to the support of the terminal device, or obtains that the terminal device knows that the terminal device can access the carrier cell with large bandwidth with the service bandwidth of small bandwidth according to the fact that the protection bandwidth corresponding to the first channel bandwidth supported by the terminal device is not greater than the minimum protection bandwidth corresponding to the second channel bandwidth. At this time, the network device sends second information to the terminal device, where the second information is used to instruct the terminal device to access the second cell, and meanwhile, the second information is further used to instruct the first channel bandwidth or a carrier bandwidth corresponding to the second channel bandwidth, where the carrier bandwidth is a carrier bandwidth corresponding to the second cell. The frequency band corresponding to the first cell and the frequency band corresponding to the second cell belong to the same working frequency band.

The second information may be information carried by SIB1 issued by the network device in a broadcast form.

S504, the terminal equipment accesses the second cell with the first channel bandwidth.

Specifically, after receiving the second information sent by the network device, the terminal device accesses the second cell with the first channel bandwidth. The frequency range corresponding to the first channel bandwidth when the terminal equipment is accessed to the second cell is different from the frequency range corresponding to the first channel bandwidth when the terminal equipment is accessed to the first cell.

In one implementation, the second cell may be another cell co-sited with the first cell, or the second cell may be a secondary cell of the first cell, which is not limited by the present application.

Based on the above scheme, according to the communication method provided by the embodiment of the application, the network equipment can acquire the capability of the terminal equipment according to the information reported by the terminal equipment, and configures the carrier cell with large bandwidth for the terminal equipment based on the capability information of the terminal equipment, so that different terminal equipment can flexibly select the cell with large bandwidth according to the capability of the terminal equipment. The method of the application can be applied to the network system with expanded bandwidth, and can give consideration to various terminal devices in the network system, so that the terminal device supporting larger bandwidth can fully utilize spectrum resources, and other terminal devices can normally work without upgrading, thereby ensuring the stability of the network system and the reliability of communication.

Next, access of different terminal devices will be described in detail by taking a first channel bandwidth of 30MHz and a second channel bandwidth of 40MHz as an example.

If the terminal device is a terminal device supporting only 30MHz service bandwidth, the method is shown in the communication method 600 of fig. 6, and specifically may include the following steps.

S601, the terminal equipment accesses a 30MHz cell with a 30MHz channel bandwidth.

Optionally, before S601, the network device broadcasts the SSB to the terminal device, and after the terminal device receives the SSB, the terminal device may acquire physical downlink shared channel (physical downlink control channel, PDCCH) information of SIB1 carried on the MIB. And obtains the carrier bandwidth corresponding to the 30MHz cell. Through the acquired information, the terminal device accesses a 30MHz cell on the initial downlink BWP.

S602, the terminal equipment reports the cell supporting 40MHz with 30MHz channel bandwidth to the network equipment.

Specifically, after the terminal device accesses the 30MHz cell, a radio resource control (radio resource control, RRC) connection is established with the network device.

Optionally, the network device transmits an RRC configuration to the terminal device, the terminal device acquires a dedicated BWP through the RRC configuration, and transmits indication information supporting access to a 40MHz cell with a channel bandwidth of 30MHz to the network device within the activated BWP.

Alternatively, the S602 may be a protection bandwidth in which the terminal device transmits a channel bandwidth of 30MHz supported by the terminal device to the network device is less than or equal to a protection bandwidth of a channel bandwidth of 40 MHz.

It should be understood that, as can be seen from fig. 4, when the guard bandwidth of the channel bandwidth of 30MHz supported by the terminal device is not greater than the guard bandwidth of the channel bandwidth of 40MHz, the terminal device can access the 40MHz cell with the channel bandwidth of 30 MHz.

S603, the network device sends to the terminal device indication information indicating that the terminal device accesses a 40MHz cell with a channel bandwidth of 30 MHz.

In one implementation manner, after the network device receives the indication information reported by the terminal device in S602, the indication information may be sent to the terminal device by configuring the carrier bandwidth corresponding to the cell of 40MHz configured by the secondary cell.

For example, the network device may configure the carrier bandwidth corresponding to the 40MHz secondary cell through the following signaling, specifically, may be configured by second cell group- > reconfigurationWithSync- > servingcellConfigcommon- > downlinkConfigcommon- > scs-specificCarrierList- > carrier band.

In another implementation manner, after the network device receives the indication information reported by the terminal device in S602, the network device may switch the terminal device to a 40MHz cell, and issue the carrier bandwidth configuration corresponding to the 40MHz cell to the terminal device.

The network device may configure the carrier bandwidth corresponding to the 40MHz cell by signaling, specifically by masterCellGroup- > reconfigurationWithSync- > ServingCellConfigCommon- > DownlinkConfigCommon- > scs-specifivccarrier list- > carrier bandwidth.

Alternatively, the 40MHz cell may belong to a co-sited cell with a 30MHz cell to which the terminal device has access.

S604, the terminal equipment accesses a 40MHz cell with a channel bandwidth of 30 MHz.

In one implementation manner, if the network device configures, through signaling, a carrier bandwidth corresponding to the 40MHz secondary cell, the terminal device accesses the 40MHz secondary cell with the received 40MHz carrier bandwidth.

In one implementation, if the network device configures, through signaling, a carrier bandwidth corresponding to another cell of 40MHz, the terminal device switches to the cell of 40MHz with the received carrier bandwidth of 40 MHz.

It should be noted that, in the embodiment of the present application, the network device configures the carrier bandwidth to be 160RB, but the configuration BWP can only start from crb#1, i.e. skip crb#0. The reason for this is: the guard bandwidth of the 40MHz bandwidth is 552.5kHz, and assuming that the lower boundary of the guard bandwidth is exactly 758MHz, the 30MHz service bandwidth and pointA of the 40MHz system bandwidth have the same frequency domain position, the lower boundary of crb#0 is 758.5525MHz. And the protection bandwidth required by the 30MHz service bandwidth is 592.5kHz, the corresponding frequency domain position is 758.5925MHz, and the frequency domain width of one RB is 180kHz. If BWP is configured starting from crb#1, the starting frequency domain position of the schedule is 180 khz+758.5925mhz=758.7725 mhz >758.5925mhz. The protection bandwidth corresponding to the 30MHz bandwidth can be ensured not to fall into the range of CRB#0. Alternatively, the configured BWP is not limited and may be configured from crb#0, but makes a limitation when scheduling transmission only allows scheduling from crb#1 and CRBs of larger index, and cannot schedule crb#0. This approach can achieve the same technical effect as the BWP configuration limitations.

If the terminal device is a terminal device supporting a 40MHz service bandwidth, the communication method provided in the embodiment of the present application is shown in fig. 7 as a method 700, and specifically may include the following steps.

The method 700 differs from the method 600 shown in fig. 6 described above in S703.

Specifically, after the network device receives the indication information reported by the terminal device in S702, the network device may configure a 30MHz cell carrier configuration for the terminal device or configure a 40MHz cell carrier configuration for the terminal device through the signaling shown in the foregoing S602 by way of example.

Optionally, the terminal device may also report to the network device through S705 that the terminal device can access a 40MHz cell with a 40MHz channel bandwidth. I.e. the terminal device is a high capability terminal device supporting a channel bandwidth of 40 MHz.

The S701, S702, and S704 of the method 700 may refer to S601, S602, and S604 in the method 600 shown in fig. 6, which are not described herein.

In addition, if the terminal device is a terminal device supporting a 40MHz service bandwidth, the communication method provided in the embodiment of the present application further includes a method 800 as shown in fig. 8, and specifically may include the following steps.

The method 800 differs from the method 700 shown in fig. 7 in S804.

Specifically, after the terminal device receives the indication information issued by the network device, the terminal device selects a cell with 40MHz service bandwidth to access 40MHz system bandwidth.

Currently, there is a terminal device in the communication system that only supports the first channel bandwidth, and may support all frequency ranges within the system bandwidth, for example, if the terminal device supports a service bandwidth of 30MHz, as shown in fig. 9, the terminal device may use a channel bandwidth of 758MHz-788MHz to communicate with the network device, or may use a channel bandwidth of 773MHz-803MHz to communicate with the network device. Such terminal devices are common, for example bandwidth filters.

Fig. 10 is a schematic flow chart of a communication method 1000 according to an embodiment of the present application, and the method includes the following steps as shown in fig. 10.

S1001, the terminal device accesses the first cell in the first frequency range.

Specifically, under the condition that prior information is not acquired, the terminal equipment blindly detects or monitors SSB sent by the network equipment on the synchronization grid (synchronization raster), acquires carrier bandwidth corresponding to a first cell issued by the network equipment through SIB1, and accesses the first cell in a first frequency range.

It should be understood that SIB1 broadcasted by the network device further includes information such as a subcarrier interval, a frequency band number where a carrier is located, and an offset position between SSB and point a.

S1002, the terminal device sends first information to the network device.

Optionally, the first information is used to indicate that the frequency range supported by the terminal device exceeds the first frequency range.

Optionally, the first information is used to indicate that the terminal device is capable of supporting the second frequency range.

Optionally, the first information is used to instruct the terminal device to support that the radio frequency index can be satisfied when the first channel bandwidth application/corresponding protection bandwidth is not greater than the minimum protection bandwidth corresponding to the second channel bandwidth. The first channel bandwidth is a channel bandwidth corresponding to the first frequency range, the second channel bandwidth is larger than the first channel bandwidth, and the minimum protection bandwidth corresponding to the second channel bandwidth is smaller than the minimum protection bandwidth corresponding to the first channel bandwidth.

S1003, the network device sends the second information to the terminal device.

Specifically, after receiving the first information sent by the terminal device, the network device sends second information to the terminal device, where the second information is used to instruct the terminal device to access the second cell.

S1004, the terminal equipment accesses to the second cell.

Specifically, after receiving the second information sent by the network device, the terminal device may access the second cell with the first channel bandwidth, or access the second cell with the third channel bandwidth. The frequency range corresponding to the first channel bandwidth when the terminal equipment is accessed to the second cell is different from the frequency range corresponding to the first channel bandwidth when the terminal equipment is accessed to the first cell.

Optionally, the first frequency range is a frequency range corresponding to a first channel bandwidth when the terminal device accesses the first cell, and the second frequency range is a frequency range corresponding to the first channel bandwidth when the terminal device accesses the second cell. For example, if the first channel bandwidth is 30MHz, the second frequency range is 773MHz-803MHz when the first frequency range is 758MHz-788 MHz.

Optionally, the first frequency range is a frequency range corresponding to a first channel bandwidth when the terminal device accesses the first cell, and the second frequency range is a frequency range corresponding to a second channel bandwidth when the terminal device accesses the second cell. By way of example, if the first channel bandwidth is 30MHz and the second channel bandwidth is 40MHz, the second frequency range may be 788MHz-798MHz, 773MHz-798MHz, 778MHz-798MHz, or the like when the first frequency range is 758MHz-788 MHz.

Optionally, the first frequency range is a frequency range corresponding to a first channel bandwidth when the terminal device accesses the first cell, and the second frequency range is greater than a frequency range corresponding to a third channel bandwidth when the terminal device accesses the second cell. When the first information is used for indicating the terminal equipment to support that the first channel bandwidth application/corresponding protection bandwidth is not larger than the minimum protection bandwidth corresponding to the second channel bandwidth and can meet the radio frequency index, the minimum protection bandwidth corresponding to the third channel bandwidth is not larger than the first channel bandwidth application/corresponding protection bandwidth. For example, if the first channel bandwidth is 30MHz and the second channel bandwidth is 40MHz, the third channel bandwidth may be 25MHz,20MHz, or the like, which is a standard bandwidth smaller than 30 MHz. When the first frequency range is 758MHz to 788MHz, the second frequency range may be 788MHz to 798MHz, 773MHz to 798MHz, 778MHz to 798MHz, or the like. However, in order to satisfy monotonicity and ensure radio frequency index, the protection bandwidth of the 30MHz application of the terminal device is not greater than 552.5kHz corresponding to 40MHz, and the protection bandwidth of the 30MHz application requires a protection bandwidth corresponding to a smaller standard bandwidth such as 25MHz/20MHz or more.

In one implementation, the second cell may be a cell co-sited with the first cell, or the second cell may be a secondary cell of the first cell, which is not limited by the present application.

Based on the scheme, the communication method provided by the embodiment of the application can be applied to a network system with expanded bandwidth, can consider various terminal devices in the network system, and ensures the stability of the network system and the reliability of communication.

In the above embodiment of the present application, the terminal device or the user equipment in the communication system or the application scenario of the application should at least include legacy UE, that is, the terminal device described in the embodiment of the present application is applied in the scenario where the legacy UE coexists.

In addition, it should be noted that, the embodiments of the present application are described only for the downlink channel, and the present application is still applicable to the uplink channel transmission.

The method provided by the embodiment of the present application is described in detail above with reference to fig. 5 to 8 and fig. 10. The following describes in detail the communication device provided in the embodiment of the present application with reference to fig. 11 to 14.

Fig. 11 is a schematic block diagram of a communication device 10 provided in an embodiment of the present application. As shown, the communication device 10 may include a transceiver module 11 and a processing module 12.

In one possible design, the communication apparatus 10 may correspond to the terminal device (or UE) in the above method embodiments.

Illustratively, the communication apparatus 10 may correspond to the terminal devices in the methods 500 to 800 and 1000 according to the embodiments of the present application, and the communication apparatus 10 may include modules for performing the methods performed by the terminal devices in the methods 1000 and 5 to 8. And, each unit in the communication device 10 and the other operations and/or functions described above are respectively for implementing the respective flows of the methods shown in fig. 5-8 and method 1000.

The transceiver module 11 in the communication apparatus 10 performs the receiving and transmitting operations performed by the terminal device in the above-described method embodiments, and the processing module 12 performs operations other than the receiving and transmitting operations.

In another possible design, the communication apparatus 10 may also correspond to the network device (or base station or gNB) in the above method embodiments.

Illustratively, the communication apparatus 10 may correspond to the network devices in the methods 500-800 and 1000 according to the embodiments of the present application, and the communication apparatus 10 may include modules for performing the methods performed by the network devices in fig. 5-8 and 10. And, each unit in the communication device 10 and the other operations and/or functions described above are respectively for implementing the respective flows of the methods described in fig. 5-8 and fig. 10.

The transceiver module 11 in the communication apparatus 10 performs the receiving and transmitting operations performed by the network device in the above-described method embodiments, and the processing module 12 performs operations other than the receiving and transmitting operations.

According to the foregoing method, fig. 12 is a schematic diagram of a communication apparatus 20 according to an embodiment of the present application, and as shown in fig. 12, the apparatus 20 may be a terminal device or a network device.

The apparatus 20 may include a processor 21 (i.e., an example of a processing module) and a memory 22. The memory 22 is configured to store instructions, and the processor 21 is configured to execute the instructions stored in the memory 22, so that the apparatus 20 implements steps executed by a terminal device or a network device in the methods corresponding to fig. 5 to 8 and fig. 10.

Further, the apparatus 20 may also include an input port 23 (i.e., one example of a transceiver module) and an output port 24 (i.e., another example of a transceiver module). Further, the processor 21, memory 22, input port 23 and output port 24 may communicate with each other via internal connection paths to communicate control and/or data signals. The memory 22 is used for storing a computer program, and the processor 21 may be used for calling and running the computer program from the memory 22 to control the input port 23 to receive signals, and the output port 24 to send signals, so as to complete the steps of the terminal device or the network device in the method. The memory 22 may be integrated in the processor 21 or may be provided separately from the processor 21.

Alternatively, if the communication device 20 is a communication apparatus, the input port 23 is a receiver, and the output port 24 is a transmitter. Wherein the receiver and the transmitter may be the same or different physical entities. Which are the same physical entities, may be collectively referred to as transceivers.

Alternatively, if the communication device 20 is a chip or a circuit, the input port 23 is an input interface, and the output port 24 is an output interface.

As an implementation, the functions of the input port 23 and the output port 24 may be considered to be implemented by a transceiving circuit or a dedicated chip for transceiving. The processor 21 may be considered to be implemented by a dedicated processing chip, a processing circuit, a processor, or a general-purpose chip.

As another implementation manner, a manner of using a general-purpose computer may be considered to implement the communication device provided by the embodiment of the present application. I.e. program code that implements the functions of the processor 21, the input port 23 and the output port 24 is stored in the memory 22, and the general purpose processor implements the functions of the processor 21, the input port 23 and the output port 24 by executing the code in the memory 22.

The concepts related to the technical solutions provided by the embodiments of the present application, explanation and detailed description of the concepts related to the embodiments of the present application and other steps are referred to in the foregoing methods or descriptions related to the other embodiments, and are not repeated herein.

Fig. 13 is a schematic structural diagram of a terminal device 30 according to the present application. For ease of illustration, fig. 13 shows only the main components of the communication device. As shown in fig. 13, the terminal device 30 includes a processor, a memory, a control circuit, an antenna, and input-output means.

The processor is mainly configured to process the communication protocol and the communication data, control the entire terminal device, execute a software program, and process the data of the software program, for example, to support the terminal device to execute the actions described in the above embodiment of the method for indicating the transmission precoding matrix. The memory is mainly used for storing software programs and data, for example, for storing the codebook described in the above embodiments. The control circuit is mainly used for converting baseband signals and radio frequency signals and processing the radio frequency signals. The control circuit together with the antenna, which may also be called a transceiver, is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are mainly used for receiving data input by a user and outputting data to the user.

When the communication device is started, the processor can read the software program in the storage unit, interpret and execute the instructions of the software program and process the data of the software program. When data is required to be transmitted wirelessly, the processor carries out baseband processing on the data to be transmitted and then outputs a baseband signal to the radio frequency circuit, and the radio frequency circuit carries out radio frequency processing on the baseband signal and then transmits the radio frequency signal outwards in the form of electromagnetic waves through the antenna. When data is sent to the terminal equipment, the radio frequency circuit receives a radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data.

Those skilled in the art will appreciate that for ease of illustration, fig. 13 shows only one memory and processor. In an actual terminal device, there may be multiple processors and memories. The memory may also be referred to as a storage medium or storage device, etc., and embodiments of the present application are not limited in this respect.

As an alternative implementation manner, the processor may include a baseband processor, which is mainly used for processing the communication protocol and the communication data, and a central processor, which is mainly used for controlling the whole terminal device, executing a software program, and processing the data of the software program. The processor in fig. 13 integrates the functions of a baseband processor and a central processing unit, and those skilled in the art will appreciate that the baseband processor and the central processing unit may be separate processors, interconnected by bus technology, etc. Those skilled in the art will appreciate that the terminal device may include multiple baseband processors to accommodate different network formats, and that the terminal device may include multiple central processors to enhance its processing capabilities, and that the various components of the terminal device may be connected by various buses. The baseband processor may also be expressed as a baseband processing circuit or a baseband processing chip. The central processing unit may also be expressed as a central processing circuit or a central processing chip. The function of processing the communication protocol and the communication data may be built in the processor, or may be stored in the storage unit in the form of a software program, which is executed by the processor to realize the baseband processing function.

As shown in fig. 13, the terminal device 30 includes a transceiving unit 31 and a processing unit 32. The transceiver unit may also be referred to as a transceiver, transceiver device, etc. Alternatively, the device for implementing the receiving function in the transceiver unit 31 may be regarded as a receiving unit, and the device for implementing the transmitting function in the transceiver unit 31 may be regarded as a transmitting unit, that is, the transceiver unit 31 includes a receiving unit and a transmitting unit. For example, the receiving unit may also be referred to as a receiver, a receiving circuit, etc., and the transmitting unit may be referred to as a transmitter, a transmitting circuit, etc.

The terminal device shown in fig. 13 may perform each action performed by the terminal device in the methods shown in fig. 5 to 8 and fig. 10, and detailed descriptions thereof are omitted for avoiding redundancy.

Fig. 14 shows a simplified schematic diagram of the structure of a network device 40. The network device includes a portion 41 and a portion 42. The part 41 is mainly used for receiving and transmitting radio frequency signals and converting the radio frequency signals and baseband signals; the 42 part is mainly used for baseband processing, control of network equipment and the like. Section 41 may be generally referred to as a transceiver module, transceiver circuitry, or transceiver, etc. Portion 42 is typically a control center of the network device, and may be generally referred to as a processing module, for controlling the network device to perform the processing operations on the network device side in the above-described method embodiment.

The transceiver module of section 41, which may also be referred to as a transceiver or transceiver, includes an antenna and radio frequency circuitry, wherein the radio frequency circuitry is primarily for radio frequency processing. For example, the device for realizing the receiving function in part 41 may be regarded as a receiving module, and the device for realizing the transmitting function may be regarded as a transmitting module, i.e., part 41 includes a receiving module and a transmitting module. The receiving module may also be referred to as a receiver, or a receiving circuit, etc., and the transmitting module may be referred to as a transmitter, or a transmitting circuit, etc.

Portion 42 may include one or more boards, each of which may include one or more processors and one or more memories. The processor is used for reading and executing the program in the memory to realize the baseband processing function and control the network equipment. If there are multiple boards, the boards can be interconnected to enhance processing power. As an alternative implementation manner, the multiple boards may share one or more processors, or the multiple boards may share one or more memories, or the multiple boards may share one or more processors at the same time.

For example, in one implementation, the network device shown in fig. 14 may be any of the network devices shown in the methods shown in fig. 5-8 and fig. 10, such as a session management network element, a mobility management network element, an SMF, an AMF, etc.

The transceiver module 41 is configured to perform steps related to the transceiving of any network device in the methods shown in fig. 5 to 8 and fig. 10; part 42 is for performing the process-related steps of any of the network devices in the methods shown in fig. 5-8.

It should be understood that fig. 14 is only an example and not a limitation, and the above-described network device including the transceiver module and the processing module may not depend on the structure shown in fig. 14.

When the device 40 is a chip, the chip includes a transceiver module and a processing module. The transceiver module can be an input/output circuit and a communication interface; the processing module is an integrated processor or microprocessor or integrated circuit on the chip.

The embodiment of the present application further provides a computer readable storage medium, on which computer instructions for implementing the method performed by the first network device in the above method embodiment are stored.

For example, the computer program, when executed by a computer, enables the computer to implement the method performed by the network device in the method embodiments described above.

Embodiments of the present application also provide a computer program product comprising instructions which, when executed by a computer, cause the computer to implement the method performed by the first device or the method performed by the second device in the method embodiments described above.

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

The explanation and beneficial effects of the related content in any of the above-mentioned devices can refer to the corresponding method embodiments provided above, and are not repeated here.

In an embodiment of the present application, the network device may include a hardware layer, an operating system layer running above the hardware layer, and an application layer running above the operating system layer. The hardware layer may include a central processing unit (central processing unit, CPU), a memory management unit (memory management unit, MMU), and a memory (also referred to as a main memory). The operating system of the operating system layer may be any one or more computer operating systems that implement business processing through processes (processes), for example, a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or windows operating system, etc. The application layer may include applications such as a browser, address book, word processor, instant messaging software, and the like.

The embodiment of the present application is not particularly limited to the specific structure of the execution body of the method provided by the embodiment of the present application, as long as communication can be performed by the method provided according to the embodiment of the present application by running a program in which codes of the method provided by the embodiment of the present application are recorded. For example, the execution body of the method provided by the embodiment of the application may be a network device, or a functional module in the network device that can call a program and execute the program.

Various aspects or features of the application may be implemented as a method, apparatus, or article of manufacture using standard programming and/or engineering techniques. The term "article of manufacture" as used herein may encompass a computer program accessible from any computer-readable device, carrier, or media. For example, computer-readable media may include, but are not limited to: magnetic storage devices (e.g., hard disk, floppy disk, or magnetic tape, etc.), optical disks (e.g., compact Disk (CD), digital versatile disk (digital versatile disc, DVD), etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memory (EPROM), cards, sticks, key drives, etc.).

Various storage media described herein can represent one or more devices and/or other machine-readable media for storing information. The term "machine-readable medium" may include, but is not limited to: wireless channels, and various other media capable of storing, containing, and/or carrying instruction(s) and/or data.

It should be appreciated that the processors referred to in embodiments of the present application may be central processing units (central processing unit, CPU), but may also be other general purpose processors, digital signal processors (digital signal processor, DSP), application specific integrated circuits (application specific integrated circuit, ASIC), off-the-shelf programmable gate arrays (field programmable gate array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It should also be understood that the memory referred to in embodiments of the present application may be volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. The volatile memory may be random access memory (random access memory, RAM). For example, RAM may be used as an external cache. By way of example, and not limitation, RAM may include the following forms: static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and direct memory bus RAM (DR RAM).

It should be noted that when the processor is a general purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, the memory (storage module) may be integrated into the processor.

It should also be noted that the memory described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

Those of ordinary skill in the art will appreciate that the elements and steps of the examples described in connection with the embodiments disclosed herein can be implemented as electronic hardware, or as a combination of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It will be clear to those skilled in the art that, for convenience and brevity, the specific working procedures of the apparatus and units described above may refer to the corresponding procedures in the foregoing method embodiments, which are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Furthermore, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interface, device or unit indirect coupling or communication connection, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to realize the scheme provided by the application.

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

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, produces a flow or function in accordance with embodiments of the present application, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. For example, the computer may be a personal computer, a server, or a network device, etc. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another, for example, by wired (e.g., coaxial cable, optical fiber, digital Subscriber Line (DSL)), or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. For example, the aforementioned usable medium may include, but is not limited to, a U disk, a removable hard disk, a read-only memory (ROM), a random access memory (random access memory, RAM), a magnetic disk or an optical disk, etc. various media that can store program codes.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present application should be included in the present application. The scope of the application should, therefore, be determined with reference to the appended claims and their description.

Claims

1. A method of communication, comprising:

the terminal equipment accesses a first cell by using a first channel bandwidth;

the terminal equipment sends first information, wherein the first information is used for indicating the terminal equipment to support to access a second cell with the first channel bandwidth; or, the first information is used for indicating that the minimum protection bandwidth corresponding to the first channel bandwidth supported by the terminal device is not greater than the minimum protection bandwidth corresponding to a second channel bandwidth, where the second channel bandwidth is greater than the first channel bandwidth;

the terminal equipment receives second information, wherein the second information is used for indicating the terminal equipment to access the second cell, the second information is also used for indicating the first channel bandwidth or the carrier bandwidth corresponding to the second channel bandwidth, the carrier bandwidth is the carrier bandwidth corresponding to the second cell, and the frequency band corresponding to the first cell and the frequency band corresponding to the second cell belong to the same working frequency band;

The terminal device accesses the second cell with a first channel bandwidth.

2. The method of claim 1, wherein the step of determining the position of the substrate comprises,

the first information is further used for indicating the terminal equipment to support the second channel bandwidth.

3. A method according to claim 1 or 2, characterized in that,

the first frequency range is different from the second frequency range, wherein,

the first frequency range is a frequency range corresponding to the first channel bandwidth when the terminal equipment accesses the second cell, and the second frequency range is a frequency range corresponding to the first channel bandwidth when the terminal equipment accesses the first cell.

4. A method according to any of claims 1 to 3, wherein the second information is for indicating that the terminal device accesses a second cell, comprising:

the second information is used to instruct the terminal device to switch from the first cell to the second cell.

5. A method according to any one of claim 1 to 3, wherein,

the second cell is a secondary cell of the first cell, where the second information is used to instruct the terminal device to access the second cell, and includes:

The second information is used for indicating the terminal equipment to access the auxiliary cell of the first cell.

6. The method according to any of claims 1 to 5, characterized in that the first information is carried in a maximum power back-off message of the terminal device.

7. A method of communication, comprising:

the network equipment receives first information, wherein the first information is used for indicating the terminal equipment to support to access a second cell with a first channel bandwidth; or, the first information is used for indicating that the minimum protection bandwidth corresponding to the first channel bandwidth supported by the terminal device is not greater than the minimum protection bandwidth corresponding to a second channel bandwidth, where the second channel bandwidth is greater than the first channel bandwidth;

the network device sends second information, where the second information is used to instruct the terminal device accessing to a first cell to access to the second cell, and the second information is further used to instruct the first channel bandwidth or a carrier bandwidth corresponding to the second channel bandwidth, where the carrier bandwidth is a carrier bandwidth corresponding to the second cell, and a frequency band corresponding to the first cell and a frequency band corresponding to the second cell belong to the same working frequency band.

8. The method of claim 7, wherein the step of determining the position of the probe is performed,

9. The method according to claim 7 or 8, wherein,

10. The method according to any of claims 7 to 9, wherein the second information is used to instruct the terminal device to access the first cell to access the second cell, comprising:

11. The method according to any one of claims 7 to 10, wherein,

the second cell is a secondary cell of the first cell, where the second information is used to instruct the terminal device accessing to the first cell to access the second cell, and includes:

12. The method according to any of claims 7 to 11, characterized in that the first information is carried in a maximum power back-off message of the terminal device.

13. An apparatus for communication, comprising: the processing module and the receiving-transmitting module are used for processing the data,

the processing module is used for accessing the first cell with the first channel bandwidth and accessing the second cell with the first channel bandwidth;

the transceiver module is configured to send first information, where the first information is used to instruct the processing module to support accessing the second cell with the first channel bandwidth; or, the first information is used for indicating that the minimum protection bandwidth corresponding to the first channel bandwidth supported by the processing module is not greater than the minimum protection bandwidth corresponding to a second channel bandwidth, where the second channel bandwidth is greater than the first channel bandwidth;

the transceiver module is further configured to receive second information, where the second information is used to instruct the processing module to access the second cell, and the second information is further used to instruct the first channel bandwidth or a carrier bandwidth corresponding to the second channel bandwidth, where the carrier bandwidth is a carrier bandwidth corresponding to the second cell, and a frequency band corresponding to the first cell and a frequency band corresponding to the second cell belong to the same working frequency band.

14. The apparatus of claim 13, wherein the device comprises a plurality of sensors,

the first information is further used to instruct the processing module to support the second channel bandwidth.

15. The device according to claim 13 or 14, wherein,

the first frequency range is a frequency range corresponding to the first channel bandwidth when the processing module accesses the second cell, and the second frequency range is a frequency range corresponding to the first channel bandwidth when the processing module accesses the first cell.

16. The apparatus according to any of claims 13 to 15, wherein the second information is for instructing the processing module to access a second cell, comprising:

the second information is used to instruct the processing module to switch from the first cell to the second cell.

17. The device according to any one of claims 13 to 16, wherein,

the second cell is a secondary cell of the first cell, wherein the second information is used to instruct the processing module to access the second cell, and the method includes:

the second information is used for indicating the processing module to access the auxiliary cell of the first cell.

18. The apparatus according to any of claims 13 to 17, wherein the first information is carried in a maximum power back-off message of the apparatus.

19. An apparatus for communication, comprising: the transceiver module is arranged to receive and transmit data,

the transceiver module is configured to receive first information, where the first information is used to instruct a terminal device to support accessing a second cell with a first channel bandwidth; or, the first information is used for indicating that the minimum protection bandwidth corresponding to the first channel bandwidth supported by the terminal device is not greater than the minimum protection bandwidth corresponding to a second channel bandwidth, where the second channel bandwidth is greater than the first channel bandwidth;

the transceiver module is further configured to send second information, where the second information is used to instruct the terminal device accessing to the first cell to access the second cell, and the second information is further used to instruct the first channel bandwidth or a carrier bandwidth corresponding to the second channel bandwidth, where the carrier bandwidth is a carrier bandwidth corresponding to the second cell, and a frequency band corresponding to the first cell and a frequency band corresponding to the second cell belong to the same working frequency band.

20. The apparatus of claim 19, wherein the device comprises a plurality of sensors,

21. The device according to claim 19 or 20, wherein,

22. The apparatus according to any of claims 19 to 21, wherein the second information is for indicating that the terminal device accessing the first cell accesses the second cell, comprising:

23. The device according to any one of claims 19 to 22, wherein,

24. The apparatus according to any of claims 19 to 23, wherein the first information is carried in a maximum power back-off message of the terminal device.

25. A communication device comprising a processor coupled to a memory, the memory storing instructions that, when executed by the processor,

causing the processor to perform the method of any one of claims 1 to 6, or

Causing the processor to perform the method of any one of claims 7 to 12.

26. A communication device comprising logic circuitry and an input/output interface, the logic circuitry being to couple with the input/output interface through which data is to be transmitted to perform the method of any one of claims 1 to 6 or to perform the method of any one of claims 7 to 12.

27. A computer readable storage medium for storing a computer program which, when run on a computer, causes the computer to perform the method of any one of claims 1 to 6 or causes the computer to perform the method of any one of claims 7 to 12.

28. A computer program product, the computer program product comprising: computer program code implementing the method according to any of claims 1 to 6 or implementing the method according to any of claims 7 to 12 when said computer program code is run.

29. A chip comprising a processor and a memory for storing a computer program, the processor being adapted to invoke and run the computer program stored in the memory to perform the method of any of claims 1 to 6 or to implement the method of any of claims 7 to 12.