CN113785618A

CN113785618A - Communication method and device

Info

Publication number: CN113785618A
Application number: CN201980095985.1A
Authority: CN
Inventors: 常俊仁; 邓猛; 孔令帅; 张茜; 胡小群; 曹振臻; 冯淑兰
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-08-15
Filing date: 2019-08-15
Publication date: 2021-12-10
Anticipated expiration: 2039-08-15
Also published as: WO2021026929A1; CN113785618B; CN116709449A

Abstract

The application relates to a communication method and device. The terminal device receives an RRC message from the network device. And the terminal equipment determines that the second channel bandwidth is not supported, the second channel bandwidth is the channel bandwidth acquired from the common configuration information of the first cell, and the terminal equipment determines that the first channel bandwidth indicated by the RRC message is not supported or the terminal equipment determines that the RRC message does not include the first channel bandwidth. The terminal device does not use the first cell. The embodiment of the application provides a solution for the situation that the terminal equipment cannot normally work in the first cell, for example, the terminal equipment can be re-accessed into other cells, so that the terminal equipment can be enabled to recover the working state as soon as possible.

Description

Communication method and device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a communication method and apparatus.

Background

Under the current communication system, a terminal device needs to support at least one of the following three bandwidths to work normally in a cell: a bandwidth of an initial (initial) bandwidth part (BWP) configured for the terminal device, a bandwidth indicated by the common configuration information of the cell, and a channel bandwidth used in the cell configured for the terminal device. If the terminal device does not support any of these three bandwidths, it may cause the terminal device to fail to operate normally in the cell.

However, currently, there is no judgment mechanism for the terminal device, that is, the terminal device accesses a cell without judging the bandwidth. Then, if the terminal device does not support any of the three bandwidths, the terminal device may not work normally in the cell, and there is no solution for this.

Disclosure of Invention

The embodiment of the application provides a communication method and a communication device, which are used for providing a mechanism for judging bandwidth for terminal equipment and providing a solution when the terminal equipment cannot normally work in a cell.

In a first aspect, a first communication method is provided, the method including: the terminal equipment receives an RRC message from the network equipment; the terminal equipment determines that a second channel bandwidth is not supported, wherein the second channel bandwidth is obtained from the public configuration information of the first cell; the terminal device determines that the first channel bandwidth indicated by the RRC message is not supported or the terminal device determines that the RRC message does not include the first channel bandwidth, and the terminal device does not use the first cell.

The method may be performed by a first communication device, which may be a communication apparatus or a communication device, such as a system-on-a-chip, capable of supporting the communication apparatus to implement the functionality required for the method. Illustratively, the first communication device is a terminal device. Illustratively, the terminal device is a terminal device, or a chip system provided in the terminal device for implementing the functions of the terminal device, or other components for implementing the functions of the terminal device.

In this embodiment of the present application, if it is determined that the first channel bandwidth and the second channel bandwidth are not supported, or the first channel bandwidth is not supported and the RRC message does not include the second channel bandwidth, the terminal device may not use the first cell, so as to avoid a situation that the terminal device cannot normally operate in the first cell, and enable the terminal device to access the cell that can normally operate as much as possible. Or, if the terminal device has accessed the first cell, the terminal device may also choose not to continue to use the first cell, so that a solution is provided for a situation that the terminal device cannot normally operate in the first cell, for example, the terminal device may re-access other cells, so that the terminal device may be enabled to recover the operating state as soon as possible.

With reference to the first aspect, in a possible implementation manner of the first aspect, the terminal device does not use the first cell, and includes one or any combination of the following:

the terminal equipment enters an idle state or an inactive state;

the terminal equipment determines that a first cell is inaccessible;

the terminal equipment determines that a first cell can not reside;

the terminal equipment determines that the first cell fails to be accessed; or the like, or, alternatively,

The terminal device performs cell reselection.

There may be various implementations for determining not to use the first cell. For example, the terminal device has accessed a first cell, the terminal device may determine that the first cell is non-campeable. Alternatively, the terminal device has not accessed the first cell, and the terminal device may determine that the first cell is not campeable. Or, in order to enable the terminal device to access the cell capable of working normally as soon as possible, the terminal device may further perform cell reselection and the like. The embodiment of the application does not limit the specific operation of the terminal device.

With reference to the first aspect, in a possible implementation manner of the first aspect, the first channel bandwidth is an operating channel bandwidth that can be used by the terminal device in the first cell.

For example, the first channel bandwidth is a dedicated channel bandwidth of the terminal device, for example, a channel bandwidth configured by the network device for the terminal device and available for the terminal device to use in the first cell.

With reference to the first aspect, in a possible implementation manner of the first aspect, the RRC message is used to instruct the terminal device to handover to the first cell.

For example, the terminal device has accessed the first cell, the RRC message may be an RRC connection reconfiguration message issued by the first cell, and the RRC connection reconfiguration message may configure the first channel bandwidth for the terminal device. For example, the RRC connection reconfiguration message may be a first RRC connection reconfiguration message received by the terminal device after accessing the first cell through the random access procedure, or may also be another RRC connection reconfiguration message received in addition to the first RRC connection reconfiguration message. Or, the terminal device has not accessed the first cell, and receives a handover command from the current serving cell, where the handover command is used to instruct the terminal device to handover to the first cell. The embodiment of the application is not limited to a specific application scenario.

With reference to the first aspect, in a possible implementation manner of the first aspect, the method further includes: the terminal device receives system information from the network device, where the system information indicates the second channel bandwidth, or the RRC message also indicates the second channel bandwidth.

For example, the RRC message is a handover command, the handover command issued by the source cell may indicate some information of the target cell (the first cell), and the RRC message may indicate the second channel bandwidth. Or, the RRC message is an RRC connection reconfiguration message, where the scenario is a scenario in which the terminal device has accessed the first cell, and the second channel bandwidth may be configured by the system information. For example, the system information is SIB1, or may be other system information.

With reference to the first aspect, in a possible implementation manner of the first aspect, the determining, by the terminal device, that the second channel bandwidth is not supported includes: and the terminal equipment determines that no bandwidth smaller than or equal to the second channel bandwidth exists in the channel bandwidth set supported by the terminal equipment.

This is one way for the terminal device to determine whether the second channel bandwidth is supported. The determination method is simple and is a relatively basic judgment method.

With reference to the first aspect, in a possible implementation manner of the first aspect, the method further includes: the terminal device determines that at least one channel bandwidth is smaller than or equal to the second channel bandwidth in a channel bandwidth set supported by the terminal device, and the terminal device determines that the second channel bandwidth is supported.

The terminal device may determine that the second channel bandwidth is supported if at least one channel bandwidth less than or equal to the second channel bandwidth exists in the set of channel bandwidths supported by the terminal device. This embodiment, and the above embodiment, may be considered to constitute a way for the terminal device to determine whether the second channel bandwidth is supported.

With reference to the first aspect, in a possible implementation manner of the first aspect, the method further includes:

the terminal device receives system information from the network device, the system information indicating an initial BWP:

the terminal device determines that the second channel bandwidth is greater than or equal to the bandwidth of the initial BWP.

The system information may be, for example, SIB1, or may be other system information. The system information may configure an initial BWP for the terminal device, and the terminal device may communicate in the first cell through the initial BWP, for example, may perform random access in the first cell through the initial BWP. If it is determined that the second channel bandwidth is greater than or equal to the bandwidth of the initial BWP, the terminal device may consider that the initial BWP is supported (or, in other words, the bandwidth of the initial BWP is supported), which is one way for the terminal device to determine whether the bandwidth of the initial BWP is supported. This determination is simple.

the terminal device receiving system information from the network device, the system information indicating an initial BWP;

the terminal device determines that at least one channel bandwidth larger than or equal to the bandwidth of the initial BWP exists in the channel bandwidth set supported by the terminal device.

This is a way of determining whether or not to support the bandwidth of the initial BWP through the set of channel bandwidths supported by the terminal device. The terminal device may determine that the initial BWP is supported if at least one channel bandwidth greater than or equal to the bandwidth of the initial BWP exists in the set of channel bandwidths supported by the terminal device, or may determine that the initial BWP is not supported if a channel bandwidth greater than or equal to the bandwidth of the initial BWP does not exist in the set of channel bandwidths supported by the terminal device. This manner of determining whether the bandwidth of the initial BWP is supported and the above manner of determining whether the bandwidth of the initial BWP is supported may be applied separately, for example, the terminal device may determine whether the bandwidth of the initial BWP is supported according to only one of them; or may also be applied in combination, for example, the terminal device may determine whether to support the bandwidth of the initial BWP according to the two conditions, and if both conditions are satisfied, the terminal device may determine the bandwidth supporting the initial BWP, and if only one of the two conditions is not satisfied, the terminal device may determine the bandwidth not supporting the initial BWP.

With reference to the first aspect, in a possible implementation manner of the first aspect, the method further includes: and the terminal equipment executes random access in the first cell.

If the terminal device determines that the second channel bandwidth is supported and the bandwidth of the initial BWP is also supported, the terminal device may determine that the first cell is a usable cell, for example, the terminal device has not accessed the first cell, and the terminal device may perform random access in the first cell. Alternatively, if the terminal device has accessed the first cell, the terminal device may continue to camp on the first cell, or may perform data transmission in the first cell.

With reference to the first aspect, in a possible implementation manner of the first aspect, the terminal device performs cell reselection, and the method further includes: and the terminal equipment does not set the first cell as a candidate cell in the cell reselection process within a first time length.

The terminal device may perform cell reselection if the terminal device does not use the first cell. Because the first cell does not meet the requirement of the terminal device, if the terminal device reselects the first cell in the cell reselection process, the first cell may or may not meet the requirement of the terminal device, and therefore, if the terminal device reselects the first cell again, the terminal device may be an invalid selection, which increases the power consumption of the terminal device. In this embodiment of the present application, the terminal device may use the first cell as a punished cell, for example, the first cell is not set as a candidate cell in a cell reselection process within the first duration, so that the terminal device does not reselect the first cell within the first duration, thereby reducing invalid operations of the terminal device and reducing power consumption of the terminal device. The first time length is set by the terminal device itself, or may be configured by the network device, or may be specified by a protocol, for example.

With reference to the first aspect, in a possible implementation manner of the first aspect, the method further includes: and the terminal equipment receives indication information from the network equipment, wherein the indication information is used for indicating the terminal equipment to use the first channel bandwidth and/or the first channel bandwidth as a judgment condition for accessing the first cell.

When determining whether to access the first cell, the terminal device may use which factors as the determination conditions, and the determination conditions may be configured by the network device, or determined by the terminal device itself, or specified by a protocol, or may directly adopt a default manner, or the like. Here, for example, the network device is configured, the network device may indicate which factors are used by the terminal device as the determination conditions for accessing the first cell, and the terminal device may operate according to the indication of the network device. For example, the network device instructs the terminal device to use the first channel bandwidth as a determination condition for accessing the first cell, and the terminal device only needs to determine whether to use the first cell according to the first channel bandwidth, and does not need to determine other bandwidths such as the second channel bandwidth, which is beneficial to reducing the power consumption of the terminal device.

In a second aspect, a second communication method is provided, the method comprising: the method comprises the steps that terminal equipment obtains first information, wherein the first information comprises one or more of a second channel bandwidth or a bandwidth set allowed to be configured by a control resource set 0 of a first cell, and the second channel bandwidth is obtained from common configuration information of the first cell; the terminal device determines not to access the first cell based on the bandwidth of the initial BWP of the first cell and the first information.

The method may be performed by a second communication device, which may be a communication apparatus or a communication device capable of supporting a communication apparatus to implement the functions required by the method, such as a system-on-a-chip. Illustratively, the second communication device is a terminal device. Illustratively, the terminal device is a terminal device, or a chip system provided in the terminal device for implementing the functions of the terminal device, or other components for implementing the functions of the terminal device.

According to the embodiment of the application, the probability of accessing the terminal equipment to the cell which cannot work is reduced, and the terminal equipment is accessed to the cell which can work normally as much as possible. And for the cell which may not work normally, the terminal equipment may not be accessed, and the power consumption and the time consumption caused by the fact that the terminal equipment is accessed to the cell are reduced. In the embodiment of the present application, the terminal device performs the integrated determination of not accessing the first cell by combining the first information and the initial BWP, so that the determination result can be more accurate.

With reference to the second aspect, in a possible implementation manner of the second aspect, the determining, by the terminal device, not to access the first cell based on the bandwidth of the initial BWP of the first cell and the first information includes:

the terminal device determines that the bandwidth of the initial BWP is not supported and the bandwidth of the second channel is not supported;

and the terminal equipment determines not to access the first cell.

For example, if the terminal device determines that the bandwidth of the initial BWP is not supported, the terminal device may not access the first cell and does not need to determine the bandwidth of the second channel; or, the terminal device determines that the second channel bandwidth is not supported, the first cell may not be accessed, and the bandwidth of the initial BWP does not need to be judged. Both the two judgment modes only need to judge one bandwidth, and are simpler. Or, the terminal device may restart not to access the first cell under the condition that it is determined that the bandwidth of the initial BWP is not supported and the bandwidth of the second channel is not supported, which may make the determination more comprehensive and make the determination result more accurate.

With reference to the second aspect, in a possible implementation manner of the second aspect, the determining, by the terminal device, that the bandwidth of the initial BWP is not supported includes: the terminal device determines that no channel bandwidth larger than or equal to the bandwidth of the initial BWP exists in the channel bandwidth set supported by the terminal device.

This is one way for the terminal device to determine whether or not to support the bandwidth of the initial BWP. On the contrary, if there is a channel bandwidth greater than or equal to the bandwidth of the initial BWP in the set of channel bandwidths supported by the terminal device, the terminal device may determine the bandwidth supporting the initial BWP.

With reference to the second aspect, in a possible implementation manner of the second aspect, the determining, by the terminal device, a bandwidth that does not support initial BWP of the first cell includes:

and the terminal equipment determines that no channel bandwidth smaller than or equal to the second channel bandwidth exists in the channel bandwidth set supported by the terminal equipment.

Whether or not the bandwidth of the initial BWP is supported can be determined by the second channel bandwidth, so that the manner of determining the bandwidth of the initial BWP is rich.

and the terminal equipment determines that the terminal equipment cannot meet the radio frequency index requirement corresponding to the second channel bandwidth when working on the second channel bandwidth.

The determination of whether the bandwidth of the initial BWP is supported or not is performed according to the rf indicator requirement, because the terminal device needs to use an rf filter to perform its operation, and then the determination of whether the channel bandwidth is suitable or not is a relatively strict determination method, so that the determination result is relatively accurate.

With reference to the second aspect, in a possible implementation manner of the second aspect, the determining, by the terminal device, that the bandwidth of the initial BWP is not supported includes: the terminal device determines that the bandwidth of the initial BWP and any bandwidth included in the bandwidth set allowed to be configured by the control resource set 0 of the first cell are different.

This is another way for the terminal device to determine whether the bandwidth of the initial BWP is supported. To further avoid incorrect cell access, the terminal device may determine not to access the first cell according to a relationship between the bandwidth of the initial BWP and the control resource set 0. If the bandwidth of the initial BWP and any bandwidth included in the bandwidth set allowed to be configured by the control resource set 0 are different, it may be determined that the bandwidth of the initial BWP is not supported, otherwise, if the bandwidth of the initial BWP and at least one bandwidth included in the bandwidth set allowed to be configured by the control resource set 0 are the same, it may be determined that the bandwidth of the initial BWP is supported. The determination mode is strict, and the determination result is accurate. This manner of determining whether or not the bandwidth of the initial BWP is supported, and the above manner of determining whether or not the bandwidth of the initial BWP is supported, may be applied separately, or may also be applied in combination, for example, even if the terminal device determines that a channel bandwidth greater than or equal to the bandwidth of the initial BWP exists in the channel bandwidth set supported by the terminal device, but the bandwidth of the initial BWP and any bandwidth included in the bandwidth set allowed to be configured by the control resource set 0 are different, the terminal device may still determine that the bandwidth of the initial BWP is not supported.

With reference to the second aspect, in a possible implementation manner of the second aspect, the determining, by the terminal device, that the second channel bandwidth is not supported includes: and the terminal equipment determines that no channel bandwidth smaller than or equal to the second channel bandwidth exists in the channel bandwidth set supported by the terminal equipment.

This is one way for the terminal device to determine whether the second channel bandwidth is supported. On the contrary, if there is a channel bandwidth less than or equal to the bandwidth of the initial BWP in the set of channel bandwidths supported by the terminal device, the terminal device may determine that the second channel bandwidth is supported.

With reference to the second aspect, in a possible implementation manner of the second aspect, the determining, by the terminal device, that the second channel bandwidth is not supported includes: and the terminal equipment determines that the radio frequency index requirement corresponding to the second channel bandwidth can be met when the terminal equipment works on the second channel bandwidth.

This is another way for the terminal device to determine whether the second channel bandwidth is supported. If the second channel bandwidth does not meet the index parameter requirement of the radio frequency filter of the terminal device, it can be determined that the terminal device does not support the second channel bandwidth, otherwise, if the second channel bandwidth meets the index parameter requirement of the radio frequency filter of the terminal device, it can be determined that the terminal device supports the second channel bandwidth. The mode is determined by the index parameters of the radio frequency filter, and the determined result is more accurate. This manner of determining whether the second channel bandwidth is supported, and the above manner of determining whether the second channel bandwidth is supported, may be applied separately, or may also be applied in combination, for example, even if the terminal device determines that a channel bandwidth smaller than or equal to the second channel bandwidth exists in the set of channel bandwidths supported by the terminal device, but the second channel bandwidth does not meet the specification parameter requirement of the radio frequency filter of the terminal device, the terminal device may still determine that the second channel bandwidth is not supported.

With reference to the second aspect, in one possible implementation manner of the second aspect, the method further includes:

the terminal device receives indication information from the network device, where the indication information is used to indicate that the terminal device uses one or any combination of the following as a judgment condition for accessing the first cell:

the bandwidth of the initial BWP of the first cell, the bandwidth of the second channel, or the bandwidth allowed to be configured by the control resource set 0 of the first cell.

When determining whether to access the first cell, the terminal device may use which factors as the determination conditions, and the determination conditions may be configured by the network device, or determined by the terminal device itself, or specified by a protocol, or may directly adopt a default manner, or the like. Here, for example, the network device is configured, the network device may indicate which factors are used by the terminal device as the determination conditions for accessing the first cell, and the terminal device may operate according to the indication of the network device. For example, the network device instructs the terminal device to use the second channel bandwidth as the judgment condition for accessing the first cell, the terminal device only needs to determine whether to use the first cell according to the second channel bandwidth, and does not need to judge other bandwidths, such as the bandwidth of the initial BWP, which is beneficial to reducing the power consumption of the terminal device.

and the terminal equipment enters an idle state or an inactive state, or the terminal equipment executes cell reselection.

If the terminal device does not access the first cell, the terminal device may enter an idle state or an inactive state, or the terminal device may perform cell reselection, etc., so as to recover the working state as soon as possible. By the method provided by the embodiment of the application, the terminal equipment can be prevented from being accessed into an unsuitable cell as much as possible, the terminal equipment can be ensured to work normally in the suitable cell as much as possible, and the user experience is also improved.

With reference to the second aspect, in a possible implementation manner of the second aspect, the terminal device performs cell reselection, and the method further includes: and the terminal equipment does not set the first cell as a candidate cell in the cell reselection process within a first time length.

In a third aspect, a third method of communication is provided, the method comprising: the method comprises the steps that a terminal device obtains first information, wherein the first information comprises one or more of a first channel bandwidth, a second channel bandwidth or a bandwidth set allowed to be configured by a control resource set 0 of a first cell, the first channel bandwidth is an operating channel bandwidth which can be used by the terminal device in the first cell, and the second channel bandwidth is a channel bandwidth obtained from common configuration information of the first cell; the terminal device determines to access the first cell or determine a bandwidth supporting initial BWP based on the bandwidth of the initial BWP of the first cell and the first information.

The method may be performed by a third communication device, which may be a communication apparatus or a communication device capable of supporting a communication apparatus to implement the functions required by the method, such as a system-on-chip. Illustratively, the third communication device is a terminal device. Illustratively, the terminal device is a terminal device, or a chip system provided in the terminal device for implementing the functions of the terminal device, or other components for implementing the functions of the terminal device.

In the embodiment of the application, the terminal equipment can judge whether the terminal equipment can normally work in the first cell before accessing the first cell, if the terminal equipment can normally work, the terminal equipment accesses the first cell again, the probability that the terminal equipment accesses the cell which can not work is reduced, and the terminal equipment is accessed to the cell which can normally work as much as possible. And for the cell which may not work normally, the terminal equipment may not be accessed, and the power consumption and the time consumption caused by the fact that the terminal equipment is accessed to the cell are reduced. In the embodiment of the present application, the terminal device performs the integrated determination for accessing the first cell by combining the first information and the initial BWP, so that the determination result can be more accurate.

With reference to the third aspect, in a possible implementation manner of the third aspect, the determining, by the terminal device, to access the first cell based on the bandwidth of the initial BWP of the first cell and the first information includes:

the terminal device determines to support the initial BWP bandwidth and the first channel bandwidth, and the terminal device determines to access the first cell; or the like, or, alternatively,

the terminal device determines to support the initial BWP bandwidth and the second channel bandwidth, and the terminal device determines to access the first cell; or the like, or, alternatively,

The terminal device determines to support the initial BWP bandwidth, the first channel bandwidth, and the second channel bandwidth, and the terminal device determines to access the first cell.

The terminal equipment can judge only two bandwidths for determining to access the first cell, so that the judging process is less, and less judging information needs to be acquired, thereby being beneficial to improving the judging efficiency; or, the three bandwidths can be judged, so that the accuracy of the judgment result is improved, and the terminal equipment can be prevented from accessing an unsuitable cell.

With reference to the third aspect, in a possible implementation manner of the third aspect, the determining, by the terminal device, a bandwidth supporting the initial BWP includes: the terminal device determines that a channel bandwidth greater than or equal to the bandwidth of the initial BWP exists in the channel bandwidth set supported by the terminal device.

With reference to the third aspect, in a possible implementation manner of the third aspect, the determining, by the terminal device, a bandwidth supporting initial BWP of the first cell includes:

the terminal device determines that a channel bandwidth smaller than or equal to the second channel bandwidth exists in the channel bandwidth set supported by the terminal device.

and the terminal equipment determines that the radio frequency index requirement corresponding to the second channel bandwidth can be met when the terminal equipment works on the second channel bandwidth.

With reference to the third aspect, in a possible implementation manner of the third aspect, the determining, by the terminal device, a bandwidth supporting the initial BWP includes: the terminal device determines that the bandwidth of the initial BWP is the same as at least one bandwidth included in a bandwidth set allowed to be configured by a control resource set 0 of the first cell.

With reference to the third aspect, in a possible implementation manner of the third aspect, the determining, by the terminal device, that the second channel bandwidth is supported includes: the terminal device determines that a channel bandwidth smaller than or equal to the second channel bandwidth exists in the channel bandwidth set supported by the terminal device.

With reference to the third aspect, in a possible implementation manner of the third aspect, the determining, by the terminal device, that the second channel bandwidth is supported includes: and the terminal equipment determines that the radio frequency index requirement corresponding to the second channel bandwidth can be met when the terminal equipment works on the second channel bandwidth.

With reference to the third aspect, in a possible implementation manner of the third aspect, the determining, by the terminal device, that the first channel bandwidth is supported includes: the terminal device determines that a channel bandwidth smaller than or equal to the first channel bandwidth exists in a channel bandwidth set supported by the terminal device.

This is one way for the terminal device to determine whether the first channel bandwidth is supported. If a channel bandwidth smaller than or equal to the first channel bandwidth exists in the set of channel bandwidths supported by the terminal device, the terminal device may determine that the first channel bandwidth is supported, otherwise, if a channel bandwidth smaller than or equal to the first channel bandwidth does not exist in the set of channel bandwidths supported by the terminal device, the terminal device may determine that the first channel bandwidth is not supported.

With reference to the third aspect, in a possible implementation manner of the third aspect, the determining, by the terminal device, that the first channel bandwidth is supported includes: and the terminal equipment determines that the radio frequency index requirement corresponding to the first channel bandwidth can be met when the terminal equipment works on the first channel bandwidth.

This is another way for the terminal device to determine whether the first channel bandwidth is supported. The mode is determined by the index parameters of the radio frequency filter, and the determined result is more accurate. This way of determining whether the first channel bandwidth is supported, and the above way of determining whether the first channel bandwidth is supported, may be applied separately, or may also be applied in combination, for example, even if the terminal device determines that there is a channel bandwidth smaller than or equal to the first channel bandwidth in the set of channel bandwidths supported by the terminal device, but the first channel bandwidth does not meet the specification parameter requirement of the radio frequency filter of the terminal device, the terminal device may still determine that the first channel bandwidth is not supported.

With regard to the technical effects of the third aspect or of the various possible embodiments of the third aspect, reference may also be made to the introduction of the technical effects of the second aspect or of the various possible embodiments of the second aspect.

In a fourth aspect, a fourth communication method is provided, the method comprising: the method comprises the steps that a terminal device receives an RRC message from a network device in a first cell, wherein the RRC message is used for configuring a first channel bandwidth for the terminal device, and the first channel bandwidth is a channel bandwidth which is configured for the terminal device and is used in the first cell; the terminal device determines that the first channel bandwidth is smaller than or equal to a third channel bandwidth included in a set of channel bandwidths supported by the terminal device; the terminal device continues to use the first cell.

The method may be performed by a fourth communication device, which may be a communication apparatus or a communication device capable of supporting a communication apparatus to implement the functions required by the method, such as a system-on-chip. Illustratively, the fourth communication device is a terminal device. Illustratively, the terminal device is a terminal device, or a chip system provided in the terminal device for implementing the functions of the terminal device, or other components for implementing the functions of the terminal device.

In the embodiment of the application, the terminal device can determine whether the first cell can normally work only by judging whether the first channel bandwidth is supported, and excessive judgment processes are not needed, so that the power consumption of the terminal device is saved. And certain requirements are also provided for the configuration process of the network equipment, so that the first channel bandwidth configured by the network equipment can enable the terminal equipment to normally work in the first cell as much as possible. By the method provided by the embodiment of the application, the terminal equipment is prevented from accessing the unsuitable cell as much as possible, and the service experience of the user is improved.

In combination with the fourth aspect, in one possible implementation of the fourth aspect,

the maximum value of channel bandwidths included in the set of channel bandwidths supported by the terminal equipment is less than or equal to a network carrier bandwidth or a second channel bandwidth; or the like, or, alternatively,

at least one channel bandwidth is less than or equal to a network carrier bandwidth or a second channel bandwidth in channel bandwidths included in the set of channel bandwidths supported by the terminal equipment;

the second channel bandwidth is obtained from the common configuration information of the first cell.

For example, the third channel bandwidth may be a maximum value of channel bandwidths included in the set of channel bandwidths supported by the terminal device, or the third channel bandwidth may include one or more channel bandwidths of the channel bandwidths included in the set of channel bandwidths supported by the terminal device, that is, the third channel bandwidth may be a maximum value of channel bandwidths included in the set of channel bandwidths supported by the terminal device, or may not be a maximum value of channel bandwidths included in the set of channel bandwidths supported by the terminal device. In addition, the third channel bandwidth may be less than or equal to the network carrier bandwidth or the second channel bandwidth, which may enable the terminal device to operate normally. The network carrier bandwidth is, for example, greater than or equal to the second channel bandwidth, or greater than or equal to the first channel bandwidth. The first channel bandwidth is, for example, an operating channel bandwidth of the terminal device in the first cell.

With reference to the fourth aspect, in a possible implementation manner of the fourth aspect, the third channel bandwidth is a channel bandwidth supported by the terminal device that is less than or equal to and closest to a network carrier bandwidth or the second channel bandwidth.

This is one implementation of the third channel bandwidth. For example, the third channel bandwidth may be a maximum value of channel bandwidths included in the set of channel bandwidths supported by the terminal device, or the third channel bandwidth may include one or more channel bandwidths of the channel bandwidths included in the set of channel bandwidths supported by the terminal device, that is, the third channel bandwidth may be a maximum value of channel bandwidths included in the set of channel bandwidths supported by the terminal device, or may not be a maximum value of channel bandwidths included in the set of channel bandwidths supported by the terminal device.

With reference to the fourth aspect, in a possible implementation manner of the fourth aspect, the method further includes: the terminal device receives configuration information from the network device, where the configuration information is used to configure an initial BWP for the terminal device to communicate with the network device in the first cell, and a bandwidth of the initial BWP is greater than or equal to at least one bandwidth in a set of bandwidths allowed to be configured by control resource set 0 or greater than or equal to a maximum value in at least one bandwidth in a set of bandwidths allowed to be configured by control resource set 0.

By way of explanation, for example, the number of RBs corresponding to the bandwidth of the initial BWP may satisfy the following formula:

in the formula, the first and second images are shown,

the number of RBs corresponding to any bandwidth in the bandwidth set allowed to be allocated by the control resource set 0 is indicated, or the number of RBs corresponding to the maximum bandwidth included in the bandwidth set allowed to be allocated by the control resource set 0 is indicated (or the number of RBs corresponding to the maximum bandwidth in the bandwidth set allowed to be allocated by the control resource set 0 is indicated).

Indicating the number of RBs corresponding to the bandwidth of the initial BWP.

the bandwidth of the initial BWP is less than or equal to the minimum value of the channel bandwidths supported by the terminal device, or,

the bandwidth of the initial BWP is less than or equal to a fifth channel bandwidth comprised by the set of channel bandwidths supported by the terminal device.

For example, the bandwidth of the initial BWP may be less than or equal to the minimum value of the channel bandwidths supported by the terminal device, or the bandwidth of the initial BWP may be less than or equal to the fifth channel bandwidth of the set of channel bandwidths supported by the terminal device, and the number of the fifth channel bandwidths may be one or more. It is to be understood that the bandwidth of the initial BWP may be less than or equal to the minimum value of the channel bandwidths supported by the terminal device, or may also be less than or equal to at least one channel bandwidth supported by the terminal device, but not necessarily less than or equal to the minimum value of the channel bandwidths supported by the terminal device. So that the selection range of the bandwidth of the initial BWP can be larger.

the fifth channel bandwidth is the minimum value of the channel bandwidths supported by the terminal device, or,

the fifth channel bandwidth is a channel bandwidth supported by the terminal device, which is greater than or equal to and closest to a bandwidth allowed to be configured by the control resource set 0.

For example, the fifth channel bandwidth may be a minimum value of channel bandwidths supported by the terminal device, or the fifth channel bandwidth may be a channel bandwidth supported by the terminal device, which is greater than or equal to the channel bandwidth supported by the terminal device and is closest to a bandwidth allowed to be configured by the control resource set 0. That is, the bandwidth of the initial BWP may be less than or equal to the minimum value of the channel bandwidths supported by the terminal device, or may not be less than or equal to the minimum value of the channel bandwidths supported by the terminal device, but may be less than or equal to the channel bandwidth supported by the terminal device, which is greater than or equal to the channel bandwidth supported by the terminal device and is closest to the bandwidth allowed to be configured by the control resource set 0. So that the selection range of the bandwidth of the initial BWP can be larger. The fifth channel bandwidth closest to one bandwidth does not necessarily need to be equal to the bandwidth, and the number of RBs corresponding to the fifth channel bandwidth may be closest to the number of RBs corresponding to the bandwidth.

With reference to the fourth aspect, in a possible implementation manner of the fourth aspect, a fifth channel bandwidth supported by the terminal device is less than or equal to the network carrier bandwidth or a second channel bandwidth, where the second channel bandwidth is a channel bandwidth obtained from the common configuration information of the first cell.

For example,

wherein the content of the first and second substances,

the number of RBs corresponding to the minimum bandwidth supported by the terminal device is indicated.

As an explanation, for example, the number of RBs corresponding to the bandwidth of the initial BWP may satisfy the following formula:

in the formula, the first and second images are shown,

indicating the number of RBs corresponding to the network carrier bandwidth. The network carrier bandwidth is, for example, the second channel bandwidth, or may be the first channel bandwidth. The second channel bandwidth may be obtained from common configuration information of the first cell. It is considered that the number of RBs corresponding to the bandwidth of the initial BWP is closest to and greater than or equal to the number of RBs corresponding to any one bandwidth in the bandwidth set allowed to be allocated to the control resource set 0, or the number of RBs corresponding to the bandwidth of the initial BWP is closest to and greater than or equal to the number of RBs corresponding to the maximum bandwidth in the bandwidth set allowed to be allocated to the control resource set 0. Any bandwidth in the configured bandwidth set allowed by the control resource set 0, for example, the minimum supported bandwidth required for the terminal device, that is, the minimum bandwidth supported by the terminal device

Alternatively, the maximum bandwidth in the configured bandwidth set allowed by the resource set 0 is controlled, for example, the minimum supported bandwidth required by the terminal device, that is, the minimum bandwidth supported by the terminal device

For example, the network device may configure the bandwidth of the initial BWP according to the formula, so that the configured bandwidth of the initial BWP can be supported by the terminal device.

With reference to the fourth aspect, in a possible implementation manner of the fourth aspect, the method further includes: and the terminal equipment sends the capability information of the terminal equipment to the network equipment, wherein the capability information is used for configuring the first channel bandwidth.

The network device can configure the first channel bandwidth for the terminal device according to the actual capability information of the terminal device, so that the configured first channel bandwidth can meet the capability requirement of the terminal device and can be supported by the terminal device.

With reference to the fourth aspect, in a possible implementation manner of the fourth aspect, the method further includes:

the terminal device determines that the first channel bandwidth is larger than a fourth channel bandwidth in channel bandwidths included in a set of channel bandwidths supported by the terminal device;

the terminal device does not use the first cell.

The fourth channel bandwidth is, for example, any one or more channel bandwidths included in the set of channel bandwidths, or may also be a maximum value of the channel bandwidths included in the set of channel bandwidths. In this case, the terminal device determines that the first channel bandwidth is not supported, that is, determines that it cannot normally operate in the first cell. The terminal device may not use the first cell to avoid the terminal device accessing or continuing to camp on a cell that is not operating properly.

With reference to the fourth aspect, in a possible implementation manner of the fourth aspect, the terminal device does not use the first cell, and includes one or any combination of the following:

the terminal equipment enters an idle state or an inactive state; or the like, or, alternatively,

the terminal equipment determines that a first cell is inaccessible; or the like, or, alternatively,

the terminal equipment determines that a first cell can not reside; or the like, or, alternatively,

the terminal equipment determines to stop executing data transmission in the first cell; or the like, or, alternatively,

the terminal equipment performs cell reselection; or the like, or, alternatively,

and the terminal equipment executes connection reestablishment in the first cell.

With reference to the fourth aspect, in a possible implementation manner of the fourth aspect, the terminal device performs cell reselection, and the method further includes: and the terminal equipment does not set the first cell as a candidate cell in the cell reselection process within a first time length.

In a fifth aspect, a fifth communication method is provided, the method comprising: the network equipment receives the capability information of the terminal equipment from the terminal equipment; the network equipment configures a first channel bandwidth for the terminal equipment according to the capability information, wherein the first channel bandwidth is a working bandwidth configured for the terminal equipment and used in a first cell, and the first channel bandwidth is less than or equal to a third channel bandwidth included in a set of channel bandwidths supported by the terminal equipment; and the network equipment sends an RRC message to the terminal equipment, wherein the RRC message is used for indicating the first channel bandwidth.

The method may be performed by a fifth communication device, which may be a communication apparatus or a communication device capable of supporting a communication apparatus to implement the functions required by the method, such as a system-on-chip. Illustratively, the fifth communication device is a network device, or a system-on-chip provided in the network device for implementing the functions of the network device, or other components for implementing the functions of the network device.

With reference to the fifth aspect, in a possible implementation manner of the fifth aspect, the third channel bandwidth is a channel bandwidth supported by the terminal device that is equal to or less than and closest to a network carrier bandwidth or a second channel bandwidth.

With reference to the fifth aspect, in one possible implementation of the fifth aspect,

the maximum value of channel bandwidths included in the set of channel bandwidths supported by the terminal equipment is less than or equal to the network carrier bandwidth; or the like, or, alternatively,

at least one channel bandwidth is less than or equal to a second channel bandwidth in channel bandwidths included in the set of channel bandwidths supported by the terminal device, wherein the second channel bandwidth is obtained from the common configuration information of the first cell.

With reference to the fifth aspect, in one possible implementation manner of the fifth aspect, the method further includes:

the network device configures the terminal device with a bandwidth of an initial BWP according to a pre-estimated capability of the terminal device and/or a bandwidth set allowed to be configured by a control resource set 0 of the first cell, wherein the bandwidth of the initial BWP is greater than or equal to at least one bandwidth of the bandwidth set allowed to be configured by the control resource set 0 of the first cell or greater than or equal to the maximum value of at least one bandwidth of the bandwidth set allowed to be configured by the control resource set 0;

and the network device sends configuration information to the terminal device, wherein the configuration information is used for configuring the initial BWP, and the initial BWP is used for the terminal device to communicate with the network device in the first cell.

The network device needs to configure the initial BWP for the terminal device so that the terminal device can perform random access through the initial BWP. At this time, it is possible that the network device has not obtained the capability information of the terminal device, and then the network device may configure the bandwidth of the initial BWP for the terminal device according to the pre-estimated capability of the terminal device. Even if the capability information of the terminal device is not obtained, the network device can configure the initial BWP for the terminal device, which can ensure the normal operation of the terminal device.

With reference to the fifth aspect, in a possible implementation manner of the fifth aspect, a fifth channel bandwidth supported by the terminal device is less than or equal to the network carrier bandwidth or a second channel bandwidth, where the second channel bandwidth is a channel bandwidth obtained from the common configuration information of the first cell.

With reference to the fifth aspect, in a possible implementation manner of the fifth aspect, the first channel bandwidth is greater than or equal to the bandwidth of the initial BWP.

This may be as a way for the terminal device to determine whether the first channel bandwidth is supported. The terminal device determines that the first channel bandwidth is supported if the first channel bandwidth is greater than or equal to the bandwidth of the initial BWP, or determines that the first channel bandwidth is not supported if the first channel bandwidth is less than the bandwidth of the initial BWP. This manner of determining whether the first channel bandwidth is supported may be applied in combination with other manners of determining whether the first channel bandwidth is supported, or may be applied separately.

With regard to the technical effects of the fifth aspect or of the various possible embodiments of the fifth aspect, reference may also be made to the introduction to the technical effects of the fourth aspect or of the various possible embodiments of the fourth aspect.

In a sixth aspect, a communication apparatus is provided, for example, a communication device. The communication device is adapted to perform the method of the first aspect or any possible implementation manner of the first aspect. In particular, the communication device may comprise means, for example comprising processing means and transceiver means, for performing the method of the first aspect or any of its possible implementations. Illustratively, the communication device is a terminal device as described above. Wherein the content of the first and second substances,

the receiving and sending module is used for receiving RRC messages from network equipment;

the processing module is configured to determine that a second channel bandwidth is not supported, where the second channel bandwidth is a channel bandwidth obtained from common configuration information of the first cell;

the processing module is further configured to determine that the first channel bandwidth indicated by the RRC message is not supported or determine that the RRC message does not include the first channel bandwidth;

the processing module is further configured to not use the first cell.

With reference to the sixth aspect, in a possible implementation manner of the sixth aspect, the processing module is configured to not use the first cell by one or any combination of the following:

Entering an idle state or an inactive state;

determining that the first cell is inaccessible;

determining that the first cell is non-campeable;

determining that the first cell fails to access; or the like, or, alternatively,

a cell reselection is performed.

With reference to the sixth aspect, in a possible implementation manner of the sixth aspect, the first channel bandwidth is an operating channel bandwidth that can be used by the terminal device in the first cell.

With reference to the sixth aspect, in a possible implementation manner of the sixth aspect, the RRC message is used to instruct the terminal device to handover to the first cell.

In combination with the sixth aspect, in one possible embodiment of the sixth aspect,

the transceiver module is further configured to receive system information from the network device, where the system information indicates the second channel bandwidth; or the like, or, alternatively,

the RRC message also indicates the second channel bandwidth.

With reference to the sixth aspect, in a possible implementation manner of the sixth aspect, the processing module is configured to determine that the second channel bandwidth is not supported by the following method, and includes:

and determining that no bandwidth smaller than or equal to the second channel bandwidth exists in the channel bandwidth set supported by the terminal equipment.

With reference to the sixth aspect, in a possible implementation manner of the sixth aspect, the processing module is further configured to determine that at least one channel bandwidth exists in the set of channel bandwidths supported by the terminal device, and determine that the second channel bandwidth is supported, where the at least one channel bandwidth is less than or equal to the second channel bandwidth.

the transceiver module is further configured to receive system information from the network device, where the system information indicates that an initial BWP:

the processing module is further configured to determine that the second channel bandwidth is greater than or equal to the bandwidth of the initial BWP.

the processing module is further configured to determine that at least one channel bandwidth greater than or equal to the bandwidth of the initial BWP exists in the set of channel bandwidths supported by the terminal device.

With reference to the sixth aspect, in a possible implementation manner of the sixth aspect, the processing module is further configured to perform random access in the first cell.

With reference to the sixth aspect, in a possible implementation manner of the sixth aspect, the terminal device performs cell reselection, and the processing module is further configured to not set the first cell as a candidate cell in the cell reselection process for a first duration.

With reference to the sixth aspect, in a possible implementation manner of the sixth aspect, the transceiver module is further configured to receive indication information from the network device, where the indication information is used to indicate the terminal device to use the first channel bandwidth and/or the first channel bandwidth as a determination condition for accessing the first cell.

With regard to the technical effects brought about by the sixth aspect or the various possible embodiments of the sixth aspect, reference may be made to the introduction to the technical effects of the first aspect or the various possible embodiments of the first aspect.

A seventh aspect provides a communication apparatus, for example, a communication device. The communication device is adapted to perform the method of the second aspect or any of the possible embodiments of the second aspect. In particular, the communication device may comprise means, for example comprising processing means, for performing the method of the second aspect or any of its possible embodiments. Optionally, a transceiver module may be further included. Illustratively, the communication device is a terminal device as described above. Wherein the content of the first and second substances,

The processing module is configured to obtain first information, where the first information includes one or more of a second channel bandwidth or a bandwidth set allowed to be configured by a control resource set 0 of a first cell, and the second channel bandwidth is a channel bandwidth obtained from common configuration information of the first cell;

the processing module is further configured to determine not to access the first cell based on the bandwidth of the initial BWP of the first cell and the first information.

With reference to the seventh aspect, in a possible implementation manner of the seventh aspect, the processing module is configured to determine not to access the first cell based on the bandwidth of the initial BWP of the first cell and the first information by:

determining that the bandwidth of the initial BWP is not supported and the second channel bandwidth is not supported;

determining not to access the first cell.

With reference to the seventh aspect, in a possible implementation manner of the seventh aspect, the processing module is configured to determine the bandwidth that does not support the initial BWP by:

determining that no channel bandwidth greater than or equal to the bandwidth of the initial BWP exists in the set of channel bandwidths supported by the terminal device.

With reference to the seventh aspect, in a possible implementation manner of the seventh aspect, the processing module is configured to determine that the bandwidth does not support the initial BWP by:

and determining that no channel bandwidth smaller than or equal to the second channel bandwidth exists in the channel bandwidth set supported by the terminal equipment.

and determining that the terminal equipment cannot meet the radio frequency index requirement corresponding to the second channel bandwidth when working on the second channel bandwidth.

determining that the bandwidth of the initial BWP is different from any bandwidth included in a bandwidth set allowed to be configured by a control resource set 0 of the first cell.

With reference to the seventh aspect, in a possible implementation manner of the seventh aspect, the processing module is configured to determine that the second channel bandwidth is not supported by:

With reference to the seventh aspect, in one possible implementation manner of the seventh aspect,

the transceiver module is further configured to receive indication information from the network device, where the indication information is used to indicate the terminal device to use one or any combination of the following as a determination condition for accessing the first cell:

With reference to the seventh aspect, in a possible implementation manner of the seventh aspect, the processing module is further configured to enable the terminal device to enter an idle state or an inactive state, or enable the terminal device to perform cell reselection.

With reference to the seventh aspect, in a possible implementation manner of the seventh aspect, the terminal device performs cell reselection, and the processing module is further configured to not set the first cell as a candidate cell in the cell reselection process for a first time period.

With regard to the technical effects brought about by the seventh aspect or the various possible embodiments of the seventh aspect, reference may be made to the introduction to the second aspect or the various possible embodiments of the second aspect.

In an eighth aspect, a communication apparatus is provided, for example, a communication device. The communication device is configured to perform the method of the third aspect or any possible implementation manner of the third aspect. In particular, the communication device may comprise means, for example comprising processing means, for performing the method of the third aspect or any of its possible embodiments. Optionally, a transceiver module may be further included. Illustratively, the communication device is a terminal device as described above. Wherein the content of the first and second substances,

the processing module is configured to obtain first information, where the first information includes one or more of a first channel bandwidth, a second channel bandwidth, or a bandwidth set allowed to be configured by a control resource set 0 of a first cell, the first channel bandwidth is an operating channel bandwidth that can be used by the terminal device in the first cell, and the second channel bandwidth is a channel bandwidth obtained from common configuration information of the first cell;

The processing module is further configured to determine to access the first cell based on the bandwidth of the initial BWP of the first cell and the first information.

With reference to the eighth aspect, in a possible implementation manner of the eighth aspect, the processing module is configured to determine to access the first cell based on the bandwidth of the initial BWP of the first cell and the first information by:

determining to support the initial BWP bandwidth and the first channel bandwidth, and determining to access the first cell; or the like, or, alternatively,

determining to support the initial BWP bandwidth and the second channel bandwidth, and determining to access the first cell; or the like, or, alternatively,

determining to support the initial BWP bandwidth, the first channel bandwidth, and the second channel bandwidth, and determining to access the first cell.

With reference to the eighth aspect, in a possible implementation manner of the eighth aspect, the processing module is configured to determine the bandwidth supporting the initial BWP by:

determining that a channel bandwidth greater than or equal to the bandwidth of the initial BWP exists in the set of channel bandwidths supported by the terminal device.

And determining that a channel bandwidth smaller than or equal to the second channel bandwidth exists in the channel bandwidth set supported by the terminal equipment.

and determining that the radio frequency index requirement corresponding to the second channel bandwidth can be met when the terminal equipment works on the second channel bandwidth.

determining that a bandwidth of the initial BWP is the same as at least one bandwidth included in a bandwidth set allowed to be configured by a control resource set 0 of the first cell.

With reference to the eighth aspect, in a possible implementation manner of the eighth aspect, the processing module is configured to determine that the second channel bandwidth is supported by:

With reference to the eighth aspect, in a possible implementation manner of the eighth aspect, the processing module is configured to determine that the first channel bandwidth is supported by:

determining that a channel bandwidth equal to the first channel bandwidth exists in the set of channel bandwidths supported by the terminal device.

With reference to the eighth aspect, in a possible implementation manner of the eighth aspect, the processing module is configured to determine that the first channel bandwidth is supported by: and determining that the terminal equipment can meet the radio frequency index requirement corresponding to the first channel bandwidth when working on the first channel bandwidth.

With regard to the technical effects brought about by the eighth aspect or the various possible embodiments of the eighth aspect, reference may be made to the introduction of the technical effects of the third aspect or the various possible embodiments of the third aspect.

In a ninth aspect, a communication apparatus is provided, for example, the communication apparatus is a communication device. The communication device is adapted to perform the method of the fourth aspect or any possible implementation of the fourth aspect. In particular, the communication device may comprise means for performing the method of the fourth aspect or any of its possible embodiments, for example comprising a processing means and a transceiver means. Illustratively, the communication device is a terminal device as described above. Wherein the content of the first and second substances,

The transceiver module is configured to receive, in a first cell, an RRC message from a network device, where the RRC message is used to configure a first channel bandwidth for a terminal device, and the first channel bandwidth is a channel bandwidth configured for the terminal device and used in the first cell;

the processing module is configured to determine that the first channel bandwidth is less than or equal to a third channel bandwidth included in the set of channel bandwidths supported by the terminal device;

the processing module is further configured to continue using the first cell.

With reference to the ninth aspect, in a possible implementation manner of the ninth aspect, the third channel bandwidth is a channel bandwidth supported by the terminal device that is less than or equal to and closest to a network carrier bandwidth or the second channel bandwidth.

With reference to the ninth aspect, in one possible implementation of the ninth aspect,

With reference to the ninth aspect, in a possible implementation manner of the ninth aspect, the transceiver module is further configured to receive configuration information from the network device, where the configuration information is used to configure an initial BWP for the terminal device, and the initial BWP is used for the terminal device to communicate with the network device in the first cell, and a bandwidth of the initial BWP is greater than or equal to at least one bandwidth in a set of bandwidths allowed to be configured by control resource set 0 or greater than or equal to a maximum value in at least one bandwidth in a set of bandwidths allowed to be configured by control resource set 0.

With reference to the ninth aspect, in a possible implementation manner of the ninth aspect, a fifth channel bandwidth supported by the terminal device is less than or equal to the network carrier bandwidth or a second channel bandwidth, where the second channel bandwidth is a channel bandwidth obtained from the common configuration information of the first cell.

With reference to the ninth aspect, in a possible implementation manner of the ninth aspect, the transceiver module is further configured to send capability information of the terminal device to the network device, where the capability information is used to configure the first channel bandwidth.

With reference to the ninth aspect, in a possible implementation manner of the ninth aspect, the processing module is further configured to:

determining that the first channel bandwidth is larger than a fourth channel bandwidth in channel bandwidths included in the set of channel bandwidths supported by the terminal equipment;

the first cell is not used.

With reference to the ninth aspect, in a possible implementation manner of the ninth aspect, the processing module is configured to not use the first cell by one or any combination of the following:

Entering an idle state or an inactive state; or the like, or, alternatively,

determining that the first cell is inaccessible; or the like, or, alternatively,

determining that the first cell is non-campeable; or the like, or, alternatively,

determining to stop performing data transmission in the first cell; or the like, or, alternatively,

performing cell reselection; or the like, or, alternatively,

performing connection re-establishment in the first cell.

With reference to the ninth aspect, in a possible implementation manner of the ninth aspect, the terminal device performs cell reselection, and the processing module is further configured to not set the first cell as a candidate cell in the cell reselection process within a first time period.

With regard to the technical effects brought about by the various possible embodiments of the ninth aspect or the ninth aspect, reference may be made to the introduction to the technical effects of the various possible embodiments of the fourth aspect or the fourth aspect.

A tenth aspect provides a communication apparatus, for example, a communication device. The communication device is adapted to perform the method of the fifth aspect or any possible implementation of the fifth aspect. In particular, the communication device may comprise means for performing the method of the fifth aspect or any of its possible embodiments, for example comprising a processing means and a transceiver means. Illustratively, the communication device is a network device as described above. Wherein the content of the first and second substances,

The transceiver module is used for receiving the capability information of the terminal equipment from the terminal equipment;

the processing module is configured to configure a first channel bandwidth for the terminal device according to the capability information, where the first channel bandwidth is a working bandwidth configured for the terminal device and used in a first cell, and the first channel bandwidth is less than or equal to a third channel bandwidth included in a set of channel bandwidths supported by the terminal device;

the transceiver module is further configured to send an RRC message to the terminal device, where the RRC message is used to indicate the first channel bandwidth.

With reference to the tenth aspect, in a possible implementation manner of the tenth aspect, the third channel bandwidth is a channel bandwidth supported by the terminal device that is equal to or less than and closest to a network carrier bandwidth or a second channel bandwidth.

With reference to the tenth aspect, in one possible implementation of the tenth aspect,

the processing module is further configured to configure, for the terminal device, a bandwidth of an initial BWP according to a pre-estimated capability of the terminal device and/or a set of bandwidths allowed to be configured by the control resource set 0 of the first cell, where the bandwidth of the initial BWP is greater than or equal to at least one bandwidth of the set of bandwidths allowed to be configured by the control resource set 0 of the first cell or greater than or equal to a maximum value of the at least one bandwidth of the set of bandwidths allowed to be configured by the control resource set 0 of the first cell;

the transceiver module is further configured to send configuration information to the terminal device, where the configuration information is used to configure the initial BWP, and the initial BWP is used for the terminal device to communicate with the network device in the first cell.

With reference to the tenth aspect, in a possible implementation manner of the tenth aspect, a fifth channel bandwidth supported by the terminal device is less than or equal to the second channel bandwidth, where the second channel bandwidth is a channel bandwidth obtained from the common configuration information of the first cell.

With reference to the tenth aspect, in one possible implementation of the tenth aspect, the first channel bandwidth is greater than or equal to a bandwidth of the initial BWP.

With regard to the technical effects brought about by the tenth aspect or the various possible embodiments of the tenth aspect, reference may be made to the introduction to the technical effects of the fifth aspect or the various possible embodiments of the fifth aspect.

In an eleventh aspect, a communication device is provided. The communication device comprises a processor and a transceiver, which are coupled to each other for implementing the method described in the first aspect or the various possible embodiments of the first aspect. Illustratively, the communication device is a communication apparatus. Or, exemplarily, the communication means is a chip provided in the communication device. Illustratively, the communication device is a terminal device. Wherein, the transceiver is implemented by an antenna, a feeder, a codec, etc. in the communication device, for example, or, if the communication device is a chip disposed in the communication device, the transceiver is, for example, a communication interface in the chip, and the communication interface is connected with a radio frequency transceiving component in the communication device to implement transceiving of information by the radio frequency transceiving component. Wherein the content of the first and second substances,

The transceiver is used for receiving an RRC message from a network device;

the processor is configured to determine that a second channel bandwidth is not supported, where the second channel bandwidth is a channel bandwidth obtained from the common configuration information of the first cell;

the processor is further configured to determine that the first channel bandwidth indicated by the RRC message is not supported or determine that the RRC message does not include the first channel bandwidth;

the processor is further configured to not use the first cell.

With reference to the eleventh aspect, in a possible implementation manner of the eleventh aspect, the processor is configured to not use the first cell by one or any combination of the following:

entering an idle state or an inactive state;

determining that the first cell is inaccessible;

determining that the first cell is non-campeable;

a cell reselection is performed.

With reference to the eleventh aspect, in a possible implementation manner of the eleventh aspect, the first channel bandwidth is an operating channel bandwidth that the terminal device can use in the first cell.

With reference to the eleventh aspect, in a possible implementation manner of the eleventh aspect, the RRC message is used to instruct the terminal device to handover to the first cell.

With reference to the eleventh aspect, in one possible embodiment of the eleventh aspect,

the transceiver is further configured to receive system information from the network device, the system information indicating the second channel bandwidth; or the like, or, alternatively,

the RRC message also indicates the second channel bandwidth.

With reference to the eleventh aspect, in a possible implementation manner of the eleventh aspect, the processor is configured to determine that the second channel bandwidth is not supported by:

With reference to the eleventh aspect, in a possible implementation manner of the eleventh aspect, the processor is further configured to determine that at least one channel bandwidth exists in the set of channel bandwidths supported by the terminal device, and determine that the second channel bandwidth is supported.

the transceiver further configured to receive system information from the network device, the system information indicating an initial BWP;

the processor is further configured to determine that the second channel bandwidth is greater than or equal to the bandwidth of the initial BWP.

the processor is further configured to determine that at least one channel bandwidth greater than or equal to the bandwidth of the initial BWP exists in the set of channel bandwidths supported by the terminal device.

With reference to the eleventh aspect, in a possible implementation manner of the eleventh aspect, the processor is further configured to perform random access in the first cell.

With reference to the eleventh aspect, in a possible implementation manner of the eleventh aspect, the terminal device performs cell reselection, and the processor is further configured to not set the first cell as a candidate cell in the cell reselection procedure for a first time period.

With reference to the eleventh aspect, in a possible implementation manner of the eleventh aspect, the transceiver is further configured to receive indication information from the network device, where the indication information is used to instruct the terminal device to use the first channel bandwidth and/or the first channel bandwidth as a determination condition for accessing the first cell.

With regard to the technical effects brought about by the eleventh aspect or the various possible embodiments of the eleventh aspect, reference may be made to the introduction to the technical effects of the first aspect or the various possible embodiments of the first aspect.

In a twelfth aspect, a communication device is provided. The communication device includes a processor. Optionally, a transceiver may be further included, and the processor and the transceiver are coupled to each other for implementing the method described in the second aspect or the various possible embodiments of the second aspect. Illustratively, the communication device is a communication apparatus. Or, exemplarily, the communication device is a chip provided in the communication apparatus. Illustratively, the communication device is a terminal device. Wherein, the transceiver is implemented by an antenna, a feeder, a codec, etc. in the communication device, for example, or, if the communication device is a chip disposed in the communication device, the transceiver is, for example, a communication interface in the chip, and the communication interface is connected with a radio frequency transceiving component in the communication device to implement transceiving of information by the radio frequency transceiving component. Wherein the content of the first and second substances,

the processor is configured to obtain first information, where the first information includes one or more of a second channel bandwidth or a set of bandwidths allowed to be configured by a control resource set 0 of a first cell, and the second channel bandwidth is a channel bandwidth obtained from common configuration information of the first cell;

The processor is further configured to determine not to access the first cell based on the bandwidth of the initial BWP of the first cell and the first information.

With reference to the twelfth aspect, in a possible implementation manner of the twelfth aspect, the processor is configured to determine not to access the first cell based on the bandwidth of the initial BWP of the first cell and the first information by:

determining not to access the first cell.

With reference to the twelfth aspect, in a possible implementation manner of the twelfth aspect, the processor is configured to determine the bandwidth that does not support the initial BWP by:

With reference to the twelfth aspect, in a possible implementation manner of the twelfth aspect, the processor is configured to determine that the bandwidth does not support the initial BWP by:

With reference to the twelfth aspect, in a possible implementation manner of the twelfth aspect, the processor is configured to determine that the second channel bandwidth is not supported by:

With reference to the twelfth aspect, in one possible implementation of the twelfth aspect,

the transceiver is further configured to receive indication information from the network device, where the indication information is used to instruct the terminal device to use one or any combination of the following as a determination condition for accessing the first cell:

With reference to the twelfth aspect, in a possible implementation manner of the twelfth aspect, the processor is further configured to cause the terminal device to enter an idle state or an inactive state, or cause the terminal device to perform cell reselection.

With reference to the twelfth aspect, in a possible implementation manner of the twelfth aspect, the terminal device performs cell reselection, and the processor is further configured to not set the first cell as a candidate cell in the cell reselection process for a first time period.

With regard to the technical effects brought about by the twelfth aspect or the various possible embodiments of the twelfth aspect, reference may be made to the introduction to the technical effects of the second aspect or the various possible embodiments of the second aspect.

In a thirteenth aspect, a communication device is provided. The communication device includes a processor. Optionally, a transceiver may be further included, and the processor and the transceiver are coupled to each other for implementing the method described in the third aspect or the various possible embodiments of the third aspect. Illustratively, the communication device is a communication apparatus. Or, exemplarily, the communication means is a chip provided in the communication device. Illustratively, the communication device is a terminal device. Wherein, the transceiver is implemented by an antenna, a feeder, a codec, etc. in the communication device, for example, or, if the communication device is a chip disposed in the communication device, the transceiver is, for example, a communication interface in the chip, and the communication interface is connected with a radio frequency transceiving component in the communication device to implement transceiving of information by the radio frequency transceiving component. Wherein the content of the first and second substances,

the processor is configured to obtain first information, where the first information includes one or more of a first channel bandwidth, a second channel bandwidth, or a bandwidth set allowed to be configured by a control resource set 0 of a first cell, the first channel bandwidth is an operating channel bandwidth that can be used by the terminal device in the first cell, and the second channel bandwidth is a channel bandwidth obtained from common configuration information of the first cell;

The processor is further configured to determine to access the first cell based on the bandwidth of the initial BWP of the first cell and the first information.

With reference to the thirteenth aspect, in a possible implementation manner of the thirteenth aspect, the processor is configured to determine to access the first cell based on the bandwidth of the initial BWP of the first cell and the first information by:

With reference to the thirteenth aspect, in a possible implementation manner of the thirteenth aspect, the processor is configured to determine a bandwidth supporting the initial BWP by:

With reference to the thirteenth aspect, in a possible implementation manner of the thirteenth aspect, the processor is configured to determine that the second channel bandwidth is supported by:

With reference to the thirteenth aspect, in a possible implementation manner of the thirteenth aspect, the processor is configured to determine that the first channel bandwidth is supported by:

With reference to the thirteenth aspect, in a possible implementation manner of the thirteenth aspect, the processor is configured to determine that the first channel bandwidth is supported by: and determining that the terminal equipment can meet the radio frequency index requirement corresponding to the first channel bandwidth when working on the first channel bandwidth.

With regard to the technical effects brought about by the various possible embodiments of the thirteenth aspect or the thirteenth aspect, reference may be made to the introduction of the technical effects of the various possible embodiments of the third aspect or the third aspect.

In a fourteenth aspect, a communications apparatus is provided. The communication device comprises a processor and a transceiver, which are coupled to each other for implementing the methods described in the above fourth aspect or the various possible embodiments of the fourth aspect. Illustratively, the communication device is a communication apparatus. Or, exemplarily, the communication means is a chip provided in the communication device. Illustratively, the communication device is a terminal device. Wherein, the transceiver is implemented by an antenna, a feeder, a codec, etc. in the communication device, for example, or, if the communication device is a chip disposed in the communication device, the transceiver is, for example, a communication interface in the chip, and the communication interface is connected with a radio frequency transceiving component in the communication device to implement transceiving of information by the radio frequency transceiving component. Wherein the content of the first and second substances,

The transceiver is configured to receive, in a first cell, an RRC message from a network device, where the RRC message is used to configure a first channel bandwidth for a terminal device, and the first channel bandwidth is a channel bandwidth configured for the terminal device and used in the first cell;

the processor is configured to determine that the first channel bandwidth is less than or equal to a third channel bandwidth included in the set of channel bandwidths supported by the terminal device;

the processor is further configured to continue using the first cell.

With reference to the fourteenth aspect, in a possible implementation manner of the fourteenth aspect, the third channel bandwidth is a channel bandwidth supported by the terminal device that is less than or equal to and closest to a network carrier bandwidth or a second channel bandwidth.

In combination with the fourteenth aspect, in one possible embodiment of the fourteenth aspect,

With reference to the fourteenth aspect, in a possible implementation manner of the fourteenth aspect, the transceiver is further configured to receive configuration information from the network device, where the configuration information is used to configure an initial BWP for the terminal device, and the initial BWP is used for the terminal device to communicate with the network device in the first cell, and a bandwidth of the initial BWP is greater than or equal to at least one bandwidth in a set of bandwidths allowed to be configured by the control resource set 0 or greater than or equal to a maximum value in at least one bandwidth in a set of bandwidths allowed to be configured by the control resource set 0.

With reference to the fourteenth aspect, in a possible implementation manner of the fourteenth aspect, a fifth channel bandwidth supported by the terminal device is less than or equal to the network carrier bandwidth or a second channel bandwidth, where the second channel bandwidth is a channel bandwidth obtained from the common configuration information of the first cell.

With reference to the fourteenth aspect, in a possible implementation manner of the fourteenth aspect, the transceiver is further configured to send capability information of the terminal device to the network device, where the capability information is used to configure the first channel bandwidth.

With reference to the fourteenth aspect, in one possible implementation manner of the fourteenth aspect, the processor is further configured to:

the first cell is not used.

With reference to the fourteenth aspect, in a possible implementation manner of the fourteenth aspect, the processor is configured to not use the first cell by one or any combination of the following:

entering an idle state or an inactive state; or the like, or, alternatively,

performing cell reselection; or the like, or, alternatively,

performing connection re-establishment in the first cell.

With reference to the fourteenth aspect, in a possible implementation manner of the fourteenth aspect, the terminal device performs cell reselection, and the processor is further configured to not set the first cell as a candidate cell in the cell reselection process for a first time period.

With regard to the technical effects brought about by the various possible embodiments of the fourteenth aspect or the fourteenth aspect, reference may be made to the introduction to the technical effects of the various possible embodiments of the fourth aspect or the fourth aspect.

In a fifteenth aspect, a communications apparatus is provided. The communication device comprises a processor and a transceiver, which are coupled to each other for implementing the method described in the fifth aspect or the various possible embodiments of the fifth aspect. Illustratively, the communication device is a communication apparatus. Or, exemplarily, the communication means is a chip provided in the communication device. Illustratively, the communication device is a network device. The transceiver is implemented by, for example, an antenna, a feeder, a codec, and the like in the communication device, or, if the communication apparatus is a chip disposed in the communication device, the transceiver is, for example, a communication interface in the chip, and the communication interface is connected to a radio frequency transceiving component in the communication device to implement transceiving of information by the radio frequency transceiving component. Wherein the content of the first and second substances,

The transceiver is used for receiving the capability information of the terminal equipment from the terminal equipment;

the processor is configured to configure a first channel bandwidth for the terminal device according to the capability information, where the first channel bandwidth is a working bandwidth configured for the terminal device and used in a first cell, and the first channel bandwidth is less than or equal to a third channel bandwidth included in a set of channel bandwidths supported by the terminal device;

the transceiver is further configured to send an RRC message to the terminal device, where the RRC message is used to indicate the first channel bandwidth.

With reference to the fifteenth aspect, in a possible implementation manner of the fifteenth aspect, the third channel bandwidth is a channel bandwidth supported by the terminal device that is equal to or less than and closest to a network carrier bandwidth or a second channel bandwidth.

With reference to the fifteenth aspect, in one possible implementation of the fifteenth aspect,

the processor is further configured to configure a bandwidth of an initial BWP for the terminal device according to a pre-estimated capability of the terminal device and/or a set of bandwidths allowed to be configured by the controlling resource set 0 of the first cell, where the bandwidth of the initial BWP is greater than or equal to at least one bandwidth of the set of bandwidths allowed to be configured by the controlling resource set 0 of the first cell or greater than or equal to a maximum value of the at least one bandwidth of the set of bandwidths allowed to be configured by the controlling resource set 0;

the transceiver is further configured to send configuration information to the terminal device, where the configuration information is used to configure the initial BWP, and the initial BWP is used for the terminal device to communicate with the network device in the first cell.

With reference to the fifteenth aspect, in a possible implementation manner of the fifteenth aspect, a fifth channel bandwidth supported by the terminal device is less than or equal to the second channel bandwidth, where the second channel bandwidth is a channel bandwidth obtained from the common configuration information of the first cell.

With reference to the fifteenth aspect, in a possible implementation manner of the fifteenth aspect, the first channel bandwidth is greater than or equal to a bandwidth of the initial BWP.

With regard to the technical effects brought about by the various possible embodiments of the fifteenth aspect or the fifteenth aspect, reference may be made to the introduction to the technical effects of the various possible embodiments of the fifth aspect or the fifth aspect.

In a sixteenth aspect, a communication device is provided. The communication device can execute the functions of the terminal equipment in the method design. Illustratively, the communication means is a chip provided in the communication device. Illustratively, the communication device is a terminal device. The communication device includes: a memory for storing computer executable program code; and a processor coupled with the memory. Wherein the program code stored by the memory comprises instructions which, when executed by the processor, cause the communication device to perform the method of the first aspect or any one of the possible embodiments of the first aspect.

Wherein the communication means may further comprise a communication interface, which may be a transceiver in the communication device, for example implemented by an antenna, a feeder, a codec, etc. in the communication means, or, if the communication means is a chip provided in the communication device, the communication interface may be an input/output interface of the chip, for example an input/output pin, etc.

In a seventeenth aspect, a communication device is provided. The communication device can execute the functions of the terminal equipment in the method design. Illustratively, the communication means is a chip provided in the communication device. Illustratively, the communication device is a terminal device. The communication device includes: a memory for storing computer executable program code; and a processor coupled with the memory. Wherein the program code stored by the memory comprises instructions which, when executed by the processor, cause the communication device to perform the method of the second aspect or any one of the possible embodiments of the second aspect.

In an eighteenth aspect, a communications apparatus is provided. The communication device can execute the functions of the terminal equipment in the method design. Illustratively, the communication means is a chip provided in the communication device. Illustratively, the communication device is a terminal device. The communication device includes: a memory for storing computer executable program code; and a processor coupled with the memory. Wherein the program code stored by the memory comprises instructions which, when executed by the processor, cause the communication apparatus to perform the method of the third aspect or any one of the possible embodiments of the third aspect.

In a nineteenth aspect, a communication device is provided. The communication device can execute the functions of the terminal equipment in the method design. Illustratively, the communication means is a chip provided in the communication device. Illustratively, the communication device is a terminal device. The communication device includes: a memory for storing computer executable program code; and a processor coupled with the memory. Wherein the program code stored by the memory comprises instructions which, when executed by the processor, cause the communication apparatus to perform the method of the fourth aspect or any one of the possible embodiments of the fourth aspect.

In a twentieth aspect, a communication device is provided. The communication device can execute the functions of the terminal equipment in the method design. Illustratively, the communication means is a chip provided in the communication device. Illustratively, the communication device is a network device. The communication device includes: a memory for storing computer executable program code; and a processor coupled with the memory. Wherein the program code stored by the memory comprises instructions which, when executed by the processor, cause the communication apparatus to perform the method of the fifth aspect or any one of the possible embodiments of the fifth aspect.

A twenty-first aspect provides a first communication system comprising the communication apparatus of the ninth aspect, the communication apparatus of the fourteenth aspect or the communication apparatus of the nineteenth aspect, and comprising the communication apparatus of the tenth aspect, the communication apparatus of the fifteenth aspect or the communication apparatus of the twentieth aspect.

A twenty-second aspect provides a computer storage medium storing a computer program for causing a computer to perform the method of the first aspect or any one of its possible implementations when the computer program runs on the computer.

A twenty-third aspect provides a computer storage medium storing a computer program for causing a computer to perform the method of the second aspect or any one of the possible implementations of the first aspect when the computer program runs on the computer.

A twenty-fourth aspect provides a computer storage medium storing a computer program for causing a computer to perform the method of the third aspect or any one of the possible embodiments of the third aspect when the computer program runs on the computer.

A twenty-fifth aspect provides a computer storage medium storing a computer program which, when run on a computer, causes the computer to perform the method of the fourth aspect or any one of the possible implementations of the fourth aspect.

A twenty-sixth aspect provides a computer storage medium storing a computer program which, when run on a computer, causes the computer to perform the method of any one of the possible embodiments of the fifth aspect or the fifth aspect described above.

A twenty-seventh aspect provides a computer program product comprising instructions 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.

A twenty-eighth aspect provides a computer program product comprising instructions for storing a computer program which, when run on a computer, causes the computer to perform the method as described in any one of the possible embodiments of the second or third aspect above.

A twenty-ninth aspect provides a computer program product comprising instructions for storing a computer program which, when run on a computer, causes the computer to perform the method of the third aspect or any one of the possible embodiments of the third aspect.

A thirty-first aspect provides a computer program product comprising instructions for storing a computer program which, when run on a computer, causes the computer to perform the method of any one of the possible embodiments of the fourth aspect or the fourth aspect described above.

A thirty-first aspect provides a computer program product comprising instructions for storing a computer program which, when run on a computer, causes the computer to perform the method of any one of the possible embodiments of the fifth aspect or the fifth aspect described above.

The embodiment of the application provides a solution for the situation that the terminal equipment cannot normally work in the first cell, for example, the terminal equipment can be re-accessed into other cells, so that the terminal equipment can be enabled to recover the working state as soon as possible.

Drawings

FIG. 1 is a schematic view of a BWP;

fig. 2 is a diagram illustrating a configuration of BWP for a terminal device;

fig. 3 is a schematic view of an application scenario according to an embodiment of the present application;

fig. 4 is a flowchart of a first communication method according to an embodiment of the present application;

fig. 5 is a flowchart of a second communication method provided in the embodiment of the present application;

fig. 6 is a diagram illustrating a guard bandwidth determination of a channel bandwidth through a cell to determine whether to support initial BWP according to an embodiment of the present invention;

fig. 7 is a flowchart of a third communication method provided in the embodiment of the present application;

fig. 8 is a flowchart of a fourth communication method provided in the embodiment of the present application;

fig. 9 is a schematic block diagram of a first terminal device according to an embodiment of the present application;

fig. 10 is another schematic block diagram of a first terminal device according to an embodiment of the present application;

fig. 11 is a schematic block diagram of a second terminal device provided in an embodiment of the present application;

fig. 12 is another schematic block diagram of a second terminal device provided in an embodiment of the present application;

fig. 13 is a schematic block diagram of a third terminal device provided in an embodiment of the present application;

fig. 14 is another schematic block diagram of a third terminal device provided in an embodiment of the present application;

fig. 15 is a schematic block diagram of a fourth terminal device provided in the embodiment of the present application;

Fig. 16 is another schematic block diagram of a fourth terminal device provided in the embodiment of the present application;

fig. 17 is a schematic block diagram of a network device according to an embodiment of the present application;

fig. 18 is another schematic block diagram of a network device according to an embodiment of the present application;

fig. 19 is a schematic block diagram of a communication device provided in an embodiment of the present application;

fig. 20 is another schematic block diagram of a communication device provided by an embodiment of the present application;

fig. 21 is a further schematic block diagram of a communication device provided in an embodiment of the present application;

fig. 22 is a further schematic block diagram of a communication device provided in an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the embodiments of the present application will be described in further detail with reference to the accompanying drawings.

Hereinafter, some terms in the embodiments of the present application are explained to facilitate understanding by those skilled in the art.

1) Terminal equipment, including equipment providing voice and/or data connectivity to a user, in particular, including equipment providing voice to a user, or including equipment providing data connectivity to a user, or including equipment providing voice and data connectivity to a user. For example, may include a handheld device having wireless connection capability, or a processing device connected to a wireless modem. The terminal device may communicate with a core network via a Radio Access Network (RAN), exchange voice or data with the RAN, or interact with the RAN. The terminal device may include a User Equipment (UE), a wireless terminal device, a mobile terminal device, a device-to-device communication (D2D) terminal device, a vehicle-to-all (V2X) terminal device, a machine-to-machine/machine-type communication (M2M/MTC) terminal device, an internet of things (internet of things) terminal device, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile station), a remote station (remote station), an access point (access point, AP), a remote terminal (remote), an access terminal (access terminal), a user terminal (user terminal), a user agent (user), or a user equipment (user), etc. For example, mobile telephones (or so-called "cellular" telephones), computers with mobile terminal equipment, portable, pocket, hand-held, computer-included mobile devices, and the like may be included. For example, Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), and the like. Also included are constrained devices, such as devices that consume less power, or devices that have limited storage capabilities, or devices that have limited computing capabilities, etc. Examples of information sensing devices include bar codes, Radio Frequency Identification (RFID), sensors, Global Positioning Systems (GPS), laser scanners, and the like.

By way of example and not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable equipment can also be called wearable smart device or intelligent wearable equipment etc. is the general term of using wearable technique to carry out intelligent design, develop the equipment that can dress to daily wearing, like glasses, gloves, wrist-watch, dress and shoes etc.. A wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction and cloud interaction. The generalized wearable smart device includes full functionality, large size, and can implement full or partial functionality without relying on a smart phone, such as: smart watches or smart glasses and the like, and only focus on a certain type of application functions, and need to be used in cooperation with other devices such as smart phones, such as various smart bracelets, smart helmets, smart jewelry and the like for monitoring physical signs.

The various terminal devices described above, if located on a vehicle (e.g., placed in or installed in the vehicle), may be considered to be vehicle-mounted terminal devices, which are also referred to as on-board units (OBUs), for example.

In this embodiment, the terminal device may further include a relay (relay). Or, it is understood that any device capable of data communication with a base station may be considered a terminal device.

2) Network devices, including, for example, Access Network (AN) devices, such as base stations (e.g., access points), may refer to devices in AN access network that communicate with wireless terminal devices over one or more cells over the air, or, for example, a network device in vehicle-to-all (V2X) technology is a Road Side Unit (RSU). The base station may be configured to interconvert received air frames and IP packets as a router between the terminal device and the rest of the access network, which may include an IP network. The RSU may be a fixed infrastructure entity supporting the V2X application and may exchange messages with other entities supporting the V2X application. The network device may also coordinate attribute management for the air interface. For example, the network device may include an evolved Node B (NodeB or eNB or e-NodeB) in a Long Term Evolution (LTE) system or an advanced long term evolution (LTE-a), or may also include a next generation Node B (gNB) in a New Radio (NR) system (also referred to as an NR system) of a fifth generation mobile communication technology (5G), or may also include a Centralized Unit (CU) and a Distributed Unit (DU) in a Cloud RAN network (Cloud RAN) system, which is not limited in the embodiments of the present application.

3) The first channel bandwidth refers to a channel bandwidth configured for the terminal device and used in one cell. For example, the first channel bandwidth may be configured through dedicated signaling, such as a Radio Resource Control (RRC) message, such as an RRC connection reconfiguration message, or other RRC messages, or the dedicated signaling may be other messages besides an RRC message.

4) The second channel bandwidth refers to a channel bandwidth obtained from the common configuration information of one cell. For example, the second channel bandwidth may be carried in a system information block type 1 (SIB 1) broadcasted by the cell, or may be carried in a handover (handover) command for instructing the terminal device to perform cell handover, and the like.

5) The terms "system" and "network" in the embodiments of the present application may be used interchangeably. "at least one" means one or more, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone, wherein A and B can be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or multiple.

And, unless stated to the contrary, the embodiments of the present application refer to the ordinal numbers "first", "second", etc., for distinguishing a plurality of objects, and do not limit the size, order, timing, priority, degree of importance, etc., of the plurality of objects. For example, the first channel bandwidth and the second channel bandwidth are only used for distinguishing different channel bandwidths, and do not indicate the difference of the size, priority, importance, or the like of the two channel bandwidths.

The foregoing has described some of the noun concepts to which embodiments of the present application relate, and the following has described some features of the embodiments of the present application.

To improve the transmission rate of wireless networks and enhance the user experience, the 3rd generation partnership project (3 GPP) organization is discussing the standard of the new generation of wireless communication technology NR, i.e. the 5G standard.

The concept of bandwidth part (BWP) is introduced in NR. When the bandwidth of a cell is large, the terminal device may only operate on a portion of the bandwidth of the cell. Each partial bandwidth of the cell is called a BWP. On a broadband carrier, a network device may configure one or more downlink BWPs and one or more uplink BWPs for a terminal device at the same time. Each downstream BWP and each upstream BWP assigned to a terminal device corresponds to an identity number (ID) of the BWP.

Please refer to fig. 1, which is a schematic diagram of BWP. Fig. 1 includes a single carrier with a wide bandwidth, where the bandwidth of the single carrier is N Physical Resource Blocks (PRBs). Among the N PRBs, PRBs 1 to PRB6 form one BWP, which is referred to as BWP1, for example, and BWP1 is allocated to terminal device 1; PRBs 7 to PRB9 constitute one BWP, for example, referred to as BWP2, and BWP2 is allocated to terminal device 2; PRBs 10 to PRB N constitute one BWP, for example, referred to as BWP3, and BWP3 is also allocated to terminal device 2.

When the network device configures the BWP for the terminal device, the corresponding configuration information of each BWP may include one or more of the following information: a physical layer system architecture (numerology) supported by the BWP, the bandwidth of the BWP, or the frequency location of the BWP.

Numerology for BWP may include subcarrier spacing (SCS) configuration for BWP, cyclic prefix length configuration for BWP, and the like. The numerology supported by different BWPs may be the same or different. The bandwidth of BWP may be embodied by the number of PRBs, for example, which refers to the number of consecutive PRBs in a group. The frequency position of the BWP, for example, includes the center frequency of the BWP.

Reference may be made to fig. 2 for BWP configuration, wherein the horizontal axis of fig. 2 represents the frequency domain. In fig. 2, a network device configures one BWP on one carrier to a terminal device, and fig. 2 shows a bandwidth of the carrier and a bandwidth of the BWP, and the bandwidth of the BWP is smaller than a bandwidth capability of the terminal device. Both the network device and the terminal device know the position of the frequency domain reference point in advance, for example, the position of the PRB0 in fig. 2, and then the network device may configure an offset (offset) for the terminal device, where the offset is a difference between the frequency domain reference point and the lowest frequency point of the configured BWP, for example, the offset is a difference between the number of the PRB corresponding to the frequency domain reference point and the number of the PRB where the lowest frequency point of the configured BWP is located. And the network device may configure the bandwidth of the BWP for the terminal device, so that the terminal device may determine the frequency domain location of the BWP according to the location of the frequency domain reference point, the offset, and the bandwidth of the BWP.

Under the current communication system, a terminal device needs to support at least one of the following three bandwidths to work normally in a cell: the bandwidth of the initial BWP configured for the terminal device, the bandwidth indicated by the common configuration information of the cell, and the channel bandwidth used in the cell configured for the terminal device. If the terminal device does not support all three bandwidths, it may cause the terminal device to fail to operate normally in the cell.

In view of this, the technical solutions of the embodiments of the present application are provided. In this embodiment of the present application, if it is determined that the first channel bandwidth and the second channel bandwidth are not supported, or the first channel bandwidth is not supported and the RRC message does not indicate the second channel bandwidth, the terminal device may not use the first cell, so as to avoid a situation that the terminal device cannot normally operate in the first cell, and enable the terminal device to access the cell that can normally operate as much as possible. Or, if the terminal device has accessed the first cell, the terminal device may also choose not to continue to use the first cell, so that a solution is provided for a situation that the terminal device cannot normally operate in the first cell, for example, the terminal device may re-access other cells, so that the terminal device may be enabled to recover the operating state as soon as possible.

The technical solution provided in the embodiment of the present application may be applied to the 4th generation (4G) system, such as an LTE system, or may be applied to a 5G system, such as an NR system, or may also be applied to a next generation mobile communication system and other similar mobile communication systems. In addition, the technical solution provided in the embodiment of the present application may also be applied to a Device-to-Device (D2D) scenario, may be an NR D2D scenario, an LTE D2D scenario, or the like, or may be applied to a V2X scenario, an NR V2X scenario, an LTE V2X scenario, or the like, or may also be applied to other scenarios or other communication systems.

The network architecture applied in the embodiments of the present application is described below. Please refer to fig. 3, which illustrates a network architecture applied in the present embodiment.

Fig. 3 includes a network device and a terminal device. The terminal device may communicate with the network device. Of course, the number of terminal devices in fig. 3 is only an example, and in practical applications, the network device may provide services for a plurality of terminal devices.

The network device in fig. 3 is, for example, an access network device, such as a base station. The access network device corresponds to different devices in different systems, for example, may correspond to an eNB in a 4G system, correspond to an access network device in 5G, for example, a gNB in a 5G system, or correspond to an access network device in a communication system of subsequent evolution.

The technical solution provided by the embodiments of the present application is described below with reference to the accompanying drawings.

The embodiment of the present application provides a first communication method, please refer to fig. 4, which is a flowchart of the method. In the following description, the method is applied to the network architecture shown in fig. 3 as an example. In addition, the method may be performed by two communication devices, e.g. a first communication device and a second communication device. The first communication device or the second communication device may be a network device or a communication device capable of supporting the network device to implement the functions required by the method, or may be a terminal device or a communication device capable of supporting the terminal device to implement the functions required by the method, or may be other communication devices such as a system on chip. The implementation manner of the first communication apparatus or the second communication apparatus is not limited, for example, the two communication apparatuses may be implemented in the same form, for example, both implemented in the form of a device, or the two communication apparatuses may also be implemented in different forms, for example, the first communication apparatus is implemented in the form of a device, the second communication apparatus is implemented in the form of a system-on-chip, and so on. The network device is, for example, a base station.

For convenience of introduction, in the following, the method is performed by a terminal device and a network device as an example, that is, the first communication apparatus is a terminal device and the second communication apparatus is a network device as an example. Since this embodiment is applied to the network architecture shown in fig. 3 as an example, the terminal device described below may implement the function of the terminal device in the network architecture shown in fig. 3, and the network device described below may implement the function of the network device in the network architecture shown in fig. 3.

S41, the network device sends an RRC message to the terminal device, and the terminal device receives the RRC message from the network device.

The RRC message is, for example, an RRC connection reconfiguration message, and the RRC connection reconfiguration message described herein refers to an RRC connection reconfiguration message that is not used for instructing the terminal device to perform cell handover. Alternatively, the RRC message may be a handover command for instructing the terminal device to perform cell handover, for example, the RRC message as the handover command may instruct the terminal device to handover to the first cell. In addition, if the RRC message is a handover command, the network device may refer to a source network device of the terminal device.

S42, the terminal device determines that the second channel bandwidth is not supported. The second channel bandwidth is a channel bandwidth obtained from the common configuration information of the first cell.

The second channel bandwidth may be a channel bandwidth acquired from common configuration information of the first cell. For example, the RRC message may also indicate the second channel bandwidth, for example, if the RRC message is a handover command, the handover command may indicate the second channel bandwidth of the first cell, and equivalently, the source network device may indicate some information of the target cell, so that the terminal device can know the information of the target cell before handover. Alternatively, referring to S45, the network device may also send system information to the terminal device, and the terminal device receives the system information from the network device. The system information may be, for example, SIB1, or may be other system information, and the system information may indicate the second channel bandwidth, and the terminal device may determine the second channel bandwidth after receiving the system information from the network device. For example, if the RRC message is an RRC connection reconfiguration message, the terminal device may determine the second channel bandwidth through the system information. S45 may occur before S41 if the second channel bandwidth is determined by the network device transmitting system information to the terminal device. It will be appreciated that S41, S42 and S43 occur after the terminal device has established an RRC connection with the network device, whereas S45 may occur before the terminal device establishes an RRC connection with the network device.

S43, the terminal device determines that the first channel bandwidth indicated by the RRC message is not supported, or the terminal device determines that the RRC message does not include the first channel bandwidth.

Wherein, S42 and S43 may be executed simultaneously, or S42 may be executed before S43 (e.g., S43 is executed after S42 is executed), or S42 may be executed after S43 (e.g., S42 is executed after S43 is executed).

The first channel bandwidth may be a dedicated channel bandwidth (dedicated BW) configured for the terminal device. As an understanding of the dedicated channel bandwidth, the dedicated channel bandwidth may be an operating channel bandwidth configured for the terminal device to be available in the first cell. If the RRC message is an RRC connection reconfiguration message, the first cell may refer to a cell where the terminal device currently resides, or if the RRC message is a handover command, the first cell may refer to a target cell where the handover command indicates the terminal device to handover, in which case, for example, the cell where the terminal device currently resides is the second cell.

For example, if the RRC message is an RRC connection reconfiguration message, the first channel bandwidth may be indicated by a downlink channel bandwidth-per-subcarrier spacing-list (downlink channel BW-persistent list) and an uplink channel bandwidth-per-subcarrier spacing-list (uplink channel BW-persistent list) in a serving cell configuration (serving cell configuration) field of the RRC connection reconfiguration message. For different subcarrier intervals, the network device may configure the first channel bandwidth for the terminal device accordingly. The first channel bandwidth may include an upstream channel bandwidth and a downstream channel bandwidth.

If the RRC message includes the first channel bandwidth, the terminal device may determine whether the first channel bandwidth is supported, and if the first channel bandwidth is not supported, the terminal device may perform S44, which will be described later, in which case the terminal device may not need to determine whether the second channel bandwidth is supported. Or, if the terminal device supports the first channel bandwidth, the terminal device may determine that the terminal device can normally operate in the first cell, and the terminal device may not perform S44, where the terminal device may process the following steps: if the RRC message is an RRC connection reconfiguration message, the terminal device may continue to use the first cell, or, if the RRC message is a handover command, the terminal device may start to use the first cell (e.g., handover to the first cell).

Alternatively, if the RRC message configures the first channel bandwidth, the terminal device may determine whether the first channel bandwidth is supported and determine whether the second channel bandwidth is supported. If it is determined that the first channel bandwidth is not supported and the second channel bandwidth is not supported, the terminal device may perform S44 hereinafter, and if at least one of the first channel bandwidth or the second channel bandwidth is supported, the terminal device may not necessarily perform S44. For example, if the terminal device supports the first channel bandwidth, or supports the second channel bandwidth, or supports the first channel bandwidth and the second channel bandwidth, whichever of the three cases indicates that the terminal device is capable of operating in the first cell, the terminal device may process the first channel bandwidth in the following manner: if the RRC message is an RRC connection reconfiguration message, the terminal device may continue to use the first cell, or, if the RRC message is a handover command, the terminal device may start to use the first cell (e.g., handover to the first cell). For example, after the terminal device completes the random access of the first cell through the initial BWP, the terminal device may receive the RRC connection reconfiguration message sent by the network device. If the terminal device determines that the configuration information of the first channel bandwidth exists in the RRC connection reconfiguration message, that is, the first channel bandwidth is included, and the terminal device determines that the first channel bandwidth is supported, and the terminal device determines that the channel bandwidth of the carrier broadcast in SIB1 (second channel bandwidth) is supported, or the terminal device determines that the channel bandwidth of the carrier broadcast in SIB1 is not supported, the terminal device may determine that the first cell may be used, for example, data transmission may continue to be performed in the first cell. Alternatively, if the terminal device determines that the configuration information of the first channel bandwidth exists in the RRC connection reconfiguration message, that is, the first channel bandwidth is included, and the terminal device determines that the first channel bandwidth is not supported, and the terminal device determines that the channel bandwidth (the second channel bandwidth) of the carrier broadcasted in the SIB1 is supported, the terminal device may determine that the first cell may be used, for example, data transmission may continue to be performed in the first cell. Alternatively, if the terminal device determines that the configuration information of the first channel bandwidth exists in the RRC connection reconfiguration message, that is, the first channel bandwidth is included, and the terminal device determines that the first channel bandwidth is not supported, and the terminal device determines that the channel bandwidth (the second channel bandwidth) of the carrier broadcasted in the SIB1 is not supported, the terminal device may not use the first cell.

Alternatively, if the RRC message does not include the first channel bandwidth, the terminal device may directly perform S44, which will be described later, in which case the terminal device may not need to determine whether the second channel bandwidth is supported.

Alternatively, if the RRC message does not include the first channel bandwidth, the terminal device may determine whether the second channel bandwidth is supported. If the second channel bandwidth is not supported, the terminal device may perform S44 later, and if the second channel bandwidth is supported, it indicates that the terminal device is capable of operating in the first cell, the terminal device may not need to perform S44, and at this time, the terminal device may perform the following processing manner: if the RRC message is an RRC connection reconfiguration message, the terminal device may continue to use the first cell, or, if the RRC message is a handover command, the terminal device may start to use the first cell (e.g., handover to the first cell). For example, after the terminal device completes the random access of the first cell through the initial BWP, the terminal device may receive the RRC connection reconfiguration message sent by the network device. If the terminal device determines that the configuration information of the first channel bandwidth does not exist in the RRC connection reconfiguration message, that is, the first channel bandwidth is not included, and the terminal device determines that the channel bandwidth (the second channel bandwidth) of the carrier broadcasted in the SIB1 is supported, the terminal device determines that the first cell can be used, for example, data transmission can be continued in the first cell. Otherwise, if the terminal device determines that the configuration information of the first channel bandwidth does not exist in the RRC connection reconfiguration message, that is, the first channel bandwidth is not included, and the terminal device determines that the channel bandwidth (the second channel bandwidth) of the carrier broadcasted in the SIB1 is not supported, the terminal device may not use the first cell.

The determination condition of which factors are used by the terminal device to access a cell may be determined by the terminal device itself, or may be configured by the network device, or may be specified by a protocol, or the like. Take the example where the determination condition is configured by the network device. For example, the network device may send the indication information to the terminal device, and the terminal device receives the indication information from the network device. The indication information may indicate that the terminal device uses the first channel bandwidth as a determination condition for accessing the first cell, and if the case is, and the RRC message configures the first channel bandwidth, the terminal device only needs to determine whether the first channel bandwidth is supported, and as long as the first channel bandwidth is supported, the terminal device may be considered to be capable of normally operating in the first cell, and may not perform S44, and if the first channel bandwidth is not supported, the terminal device performs S44 without determining other channel bandwidths (e.g., the second channel bandwidth); or, the indication information indicates that the terminal device uses the second channel bandwidth as a judgment condition for accessing the first cell, if so, the terminal device only needs to judge whether the second channel bandwidth is supported, and as long as the second channel bandwidth is supported, the terminal device can be considered to be capable of normally operating in the first cell, and S44 may not be executed, whereas if the first channel bandwidth is not supported, S44 is executed without judging other channel bandwidths (for example, the first channel bandwidth); or, the indication information indicates that the terminal device uses the first channel bandwidth and the second channel bandwidth as the determination condition for accessing the first cell, the terminal device needs to determine whether the first channel bandwidth is supported and whether the second channel bandwidth is supported, S44 may not be executed only if the first channel bandwidth and the second channel bandwidth are supported, and the terminal device needs to execute S44 as long as one or both of the first channel bandwidth and the second channel bandwidth are not supported.

In the embodiment of the present application, it relates to how the terminal device determines whether the second channel bandwidth is supported, and, if the RRC message configures the first channel bandwidth, it also relates to how the terminal device determines whether the first channel bandwidth is supported. Described separately below.

1. The terminal device determines whether the first channel bandwidth is supported.

As a first way for the terminal device to determine whether the first channel bandwidth is supported, the terminal device may determine whether the first channel bandwidth is supported through a set of channel bandwidths supported by the terminal device. In various embodiments of the present application, the set of channel bandwidths supported by the terminal device is, for example, set by the terminal device at the time of factory shipment. Alternatively, the channel bandwidth set supported by the terminal device may also be a tested channel bandwidth set, where the tested channel bandwidth set refers to a channel bandwidth that can be supported by the terminal device and is determined by testing all channel bandwidths included in the channel bandwidth set. The set of channel bandwidths may include one or more channel bandwidths. For example, if there is a channel bandwidth equal to the first channel bandwidth in the set of channel bandwidths supported by the terminal device, the terminal device may determine that the first channel bandwidth is supported. And if the channel bandwidth equal to the first channel bandwidth does not exist in the channel bandwidth set supported by the terminal device, the terminal device may determine that the first channel bandwidth is not supported. Wherein, if there is a channel bandwidth equal to the first channel bandwidth in the set of channel bandwidths supported by the terminal device, the number of channel bandwidths equal to the first channel bandwidth included in the set of channel bandwidths may be one or more.

Alternatively, as a second way for the terminal device to determine whether the first channel bandwidth is supported, the terminal device may further determine whether the first channel bandwidth is supported through an index parameter of a radio frequency filter of the terminal device. For example, if the terminal device determines that the first channel bandwidth meets the requirement of the index parameter of the radio frequency filter of the terminal device, or the terminal device determines that the terminal device can work on the first channel bandwidth to meet the radio frequency index requirement corresponding to the first channel bandwidth, the terminal device determines to support the first channel bandwidth. And if the terminal device determines that the first channel bandwidth does not meet the requirement of the index parameter of the radio frequency filter of the terminal device, or the terminal device determines that the terminal device cannot meet the radio frequency index requirement corresponding to the first channel bandwidth when working on the first channel bandwidth, the terminal device determines that the first channel bandwidth is not supported. The index parameter of the rf filter of the terminal device may be determined according to the radio frequency index requirement specified by the 3GPP protocol. The terminal device determines that the terminal device can meet the radio frequency index requirement corresponding to the first channel bandwidth when operating on the first channel bandwidth, which can be understood as that the radio frequency capability of the terminal device can meet the radio frequency index requirement corresponding to the first channel bandwidth when the terminal device transmits data on the first channel bandwidth.

The above two manners of determining whether the first channel bandwidth is supported may be used separately, that is, the terminal device may use any manner as described above to determine whether the first channel bandwidth is supported. Alternatively, the above two manners may also be used in combination, for example, the terminal device starts the terminal device to support the first channel bandwidth only when determining that the channel bandwidth equal to the first channel bandwidth exists in the set of channel bandwidths supported by the terminal device and that the first channel bandwidth meets the requirement of the index parameter of the radio frequency filter of the terminal device; and if the terminal device determines that the channel bandwidth set supported by the terminal device does not have the channel bandwidth equal to the first channel bandwidth, or determines that the first channel bandwidth does not meet the requirement of the index parameter of the radio frequency filter of the terminal device, it may be determined that the terminal device does not support the first channel bandwidth.

Alternatively, the terminal device may also determine whether the first channel bandwidth is supported in other manners, which is not limited in particular.

2. The terminal device determines whether the second channel bandwidth is supported.

As a first way for the terminal device to determine whether the second channel bandwidth is supported, the terminal device may determine whether the second channel bandwidth is supported through a set of channel bandwidths supported by the terminal device. For example, if there is a channel bandwidth smaller than or equal to the second channel bandwidth in the set of channel bandwidths supported by the terminal device, the terminal device may determine that the second channel bandwidth is supported. And if the channel bandwidth set supported by the terminal device does not have a channel bandwidth smaller than the second channel bandwidth, or does not have a channel bandwidth equal to the second channel bandwidth, the terminal device may determine that the second channel bandwidth is not supported. Wherein, if there is a channel bandwidth less than or equal to the second channel bandwidth in the set of channel bandwidths supported by the terminal device, the number of channel bandwidths less than or equal to the second channel bandwidth included in the set of channel bandwidths may be one or more.

Alternatively, as a second way for the terminal device to determine whether the second channel bandwidth is supported, the terminal device may further determine whether the second channel bandwidth is supported through an index parameter of a radio frequency filter of the terminal device. For example, if the terminal device determines that the second channel bandwidth meets the requirement of the indicator parameter of the radio frequency filter of the terminal device, or the terminal device determines that the terminal device can meet the radio frequency indicator requirement corresponding to the second channel bandwidth when operating on the second channel bandwidth, the terminal device determines that the second channel bandwidth is supported. And if the terminal device determines that the second channel bandwidth does not meet the requirement of the index parameter of the radio frequency filter of the terminal device, or the terminal device determines that the terminal device cannot meet the radio frequency index requirement corresponding to the second channel bandwidth when working on the second channel bandwidth, the terminal device determines that the second channel bandwidth is not supported. The index parameter of the rf filter of the terminal device may be determined according to the radio frequency index requirement specified by the 3GPP protocol. The terminal device determines that the radio frequency index requirement corresponding to the second channel bandwidth can be met when the terminal device works on the second channel bandwidth, and it can be understood that the radio frequency capability of the terminal device can meet the radio frequency index requirement corresponding to the second channel bandwidth when the terminal device transmits data on the second channel bandwidth.

The above two manners of determining whether the second channel bandwidth is supported may be used separately, that is, the terminal device may use any manner as described above to determine whether the second channel bandwidth is supported. Alternatively, the above two manners may also be used in combination, for example, the terminal device starts the terminal device to support the second channel bandwidth when determining that the channel bandwidth less than or equal to the second channel bandwidth exists in the set of channel bandwidths supported by the terminal device and determining that the second channel bandwidth meets the requirement of the index parameter of the radio frequency filter of the terminal device; if the terminal device determines that the channel bandwidth set supported by the terminal device does not have a channel bandwidth smaller than the second channel bandwidth, or does not have a channel bandwidth equal to the second channel bandwidth, or determines that the second channel bandwidth does not meet the requirement of the index parameter of the radio frequency filter of the terminal device, it may be determined that the terminal device does not support the second channel bandwidth.

Alternatively, the terminal device may also determine whether the second channel bandwidth is supported in other manners, which is not limited in particular.

It was introduced in the foregoing that S41, S42 and S43 occur after the terminal device has established an RRC connection with the network device, then if the RRC message is a handover command, the second channel bandwidth may be configured (or, referred to as an indication) by the handover command, and the handover command may or may not configure the first channel bandwidth. In this case, if the handover command configures the first channel bandwidth and the second channel bandwidth, the terminal device directly determines whether the first channel bandwidth and the second channel bandwidth are supported, and if the handover command does not configure the first channel bandwidth, the terminal device directly determines whether the second channel bandwidth is supported. Equivalently, the terminal device only needs to determine the second channel bandwidth once.

Or, if the RRC message is an RRC connection reconfiguration message, the terminal device acquires the second channel bandwidth through the system information. After the second channel bandwidth is obtained through the system information, the terminal device needs to determine whether to initiate a random access procedure, and then the terminal device may determine whether the terminal device supports the second channel bandwidth. If the terminal device determines that the second channel bandwidth is supported, the terminal device initiates random access, and after accessing the network device, the terminal device further needs to determine whether the second channel bandwidth is supported, that is, perform the operation of S42. It can be seen that, in case the RRC message is an RRC connection reconfiguration message, the terminal device may determine whether the second channel bandwidth is supported twice, once after S45, and once at S42. For example, it is a general determination procedure that the terminal device determines whether the second channel bandwidth is supported before initiating the random access, and may not be too accurate, and it is a more accurate determination procedure that the terminal device determines whether the second channel bandwidth is supported in S42. For example, the terminal device determines whether the second channel bandwidth is supported before initiating the random access, the first manner described above for the terminal device to determine whether the second channel bandwidth is supported may be adopted, the terminal device determines whether the second channel bandwidth is supported in S42, and the second manner described above for the terminal device to determine whether the second channel bandwidth is supported may be adopted. Of course, this is merely an example, and the specific manner of determining whether the second channel bandwidth is supported is not limited thereto. Alternatively, the terminal device may not determine whether the second channel bandwidth is supported before initiating the random access, and if this is the case, the terminal device only needs to determine whether the second channel bandwidth is supported in S42.

If the terminal device receives the system information at S45, the system information may indicate an initial BWP configured for the terminal device in addition to the second channel bandwidth. Then, the terminal device may also determine whether the terminal device supports the bandwidth of the initial BWP before performing the random access. For example, the terminal device may be determined by a set of channel bandwidths supported by the terminal device. If a channel bandwidth greater than or equal to the bandwidth of the initial BWP exists in the channel bandwidth set supported by the terminal device, the terminal device determines the bandwidth supporting the initial BWP; and if the channel bandwidth larger than the bandwidth of the initial BWP does not exist in the channel bandwidth set supported by the terminal device, and the channel bandwidth equal to the bandwidth of the initial BWP does not exist, the terminal device determines that the bandwidth of the initial BWP is not supported. If a channel bandwidth greater than or equal to the bandwidth of the initial BWP exists in the set of channel bandwidths supported by the terminal device, the number of the channel bandwidths greater than or equal to the bandwidth of the initial BWP existing in the set of channel bandwidths may be one or more.

As an optional implementation manner, the terminal device may further determine whether a third channel bandwidth is greater than or equal to the bandwidth of the initial BWP, where the third channel bandwidth includes, for example, the second channel bandwidth, or includes the first channel bandwidth and the second channel bandwidth. If the third channel bandwidth includes the second channel bandwidth, the terminal device may determine whether the third channel bandwidth is greater than or equal to the bandwidth of the initial BWP before performing the random access, and if the third channel bandwidth includes the first channel bandwidth, the terminal device may determine whether the third channel bandwidth is greater than or equal to the bandwidth of the initial BWP after performing the random access, for example, in S42, or before S42, or after S42. And for the network device, the third channel bandwidth may be configured to be greater than or equal to the bandwidth of the initial BWP when configuring. If the third channel bandwidth is smaller than the bandwidth of the initial BWP, the terminal device may not be able to operate properly in the first cell.

The random access may be performed if the terminal device determines that the second channel bandwidth is supported, or the random access may be performed if the terminal device determines that the first channel bandwidth is supported, or the random access may be performed only if the terminal device determines that the first channel bandwidth and the second channel bandwidth are supported, and determines that the second channel bandwidth is greater than or equal to a bandwidth of the initial BWP. After the random access is performed, S41 may be performed as described above.

This determination may also be required before the end device determines not to perform S44 as previously described if the end device is to determine whether the first channel bandwidth is greater than or equal to the bandwidth of the initial BWP. If the first channel bandwidth is greater than or equal to the bandwidth of the initial BWP, the terminal device may not perform S44, otherwise, if the first channel bandwidth is less than the bandwidth of the initial BWP, the terminal device may not perform S44 even though it is determined through the aforementioned determination process, in which case it is necessary to continue to perform S44.

And S44, the terminal equipment does not use the first cell.

For example, the terminal device does not use the first cell, and may include one or any combination of the following: the method comprises the steps that the terminal equipment enters an idle state, the terminal equipment enters an inactive state, the terminal equipment determines that a first cell cannot be accessed, the terminal equipment determines that the first cell cannot be resided, the terminal equipment determines that the first cell fails to be accessed, and the terminal equipment initiates an RRC connection reestablishment process in the first cell or executes cell reselection.

For example, the terminal device may enter an idle state and perform cell reselection; or, the terminal device may determine that the first cell is inaccessible and enters an idle state, and perform cell reselection; or, the terminal equipment determines that the first cell fails to be accessed; alternatively, the terminal device determines that the first cell is non-campeable and enters an idle state, and performs cell reselection, and so on. If the terminal device has accessed the first cell, for example, the RRC message is an RRC connection reconfiguration message received by the terminal device in the first cell, the terminal device may determine that the first cell is not campeable; or, if the terminal device does not access the first cell, for example, the RRC message is a handover command, which indicates that the terminal device is handed over to the first cell, and the terminal device does not access the first cell at this time, the terminal device may determine that the first cell is not accessible, or determine that the first cell fails to be accessed. If the terminal device determines that the first cell is inaccessible, the terminal device may not be handed over to the first cell, for example, the terminal device may initiate an RRC connection reestablishment procedure in the second cell to re-access the second cell (the second cell is a cell in which the terminal device currently resides), or the terminal device may also enter an idle state or an inactive state, and the like.

If the terminal device is to perform cell reselection, then, as it is known from the foregoing determination process that the terminal device may not normally operate in the first cell, as an optional implementation manner, the terminal device may use the first cell as a punished cell, and no longer selects or reselects the first cell within the first duration, for example, the terminal device does not set the first cell as a candidate cell in the cell reselection process within the first duration, and then the terminal device no longer reselects the first cell within the first duration. Alternatively, if the RRC message is a handover command, the terminal device may not handover to the first cell, and the terminal device may not select to handover to the first cell for the first duration. By the method, the probability of accessing the terminal equipment to the unsuitable cell can be reduced, and the terminal equipment can be ensured to be accessed to the cell capable of working normally as much as possible. The first time length is set for the terminal device itself, or may be configured by the network device, or may be specified by a protocol, etc.

In this embodiment of the present application, if it is determined that the first channel bandwidth and the second channel bandwidth are not supported, or the first channel bandwidth is not supported and the RRC message does not indicate the second channel bandwidth, the terminal device may not access the first cell, so as to avoid a situation that the terminal device cannot normally operate in the first cell, and enable the terminal device to access the cell that can normally operate as much as possible. Or, if the terminal device has accessed the first cell, it may also choose not to camp in the first cell, for example, the terminal device may enter an idle state, and the like, so that a solution is provided for a situation that the terminal device cannot normally operate in the first cell, for example, the terminal device may also perform cell reselection, and the terminal device may possibly recover the operating state as soon as possible.

In the embodiment shown in fig. 4, the terminal device may determine whether the terminal device can normally operate in the first cell after accessing the first cell (for example, the RRC message is an RRC connection reconfiguration message). In this embodiment, the terminal device may determine whether the terminal device can normally operate in the first cell before accessing the first cell, that is, the second communication method may occur before the terminal device performs random access in the first cell, and if the terminal device determines that the terminal device cannot normally operate in the first cell, the terminal device may select not to access the first cell, thereby reducing power consumed by the terminal device for accessing the first cell.

Fig. 5 is a flowchart of a second communication method. In the following description, the method is applied to the network architecture shown in fig. 3 as an example. In addition, the method may be performed by two communication devices, e.g. a first communication device and a second communication device. The first communication device or the second communication device may be a network device or a communication device capable of supporting the network device to implement the functions required by the method, or may be a terminal device or a communication device capable of supporting the terminal device to implement the functions required by the method, or may be other communication devices such as a system on chip. The implementation manner of the first communication apparatus or the second communication apparatus is not limited, for example, the two communication apparatuses may be implemented in the same form, for example, both implemented in the form of a device, or the two communication apparatuses may also be implemented in different forms, for example, the first communication apparatus is implemented in the form of a device, the second communication apparatus is implemented in the form of a system-on-chip, and so on. The network device is, for example, a base station.

S51, the terminal device obtains first information, and the first information comprises one or any combination of the following items: the second channel bandwidth, or the set of bandwidths allowed to be configured by the control resource set 0(CORESET #0) of the first cell.

For example, the first information includes the second channel bandwidth, or the first information includes a bandwidth set allowed to be configured by the control resource set 0, or the first information includes the second channel bandwidth and the bandwidth set allowed to be configured by the control resource set 0.

As an optional manner, the first information may further include a set of channel bandwidths supported by the terminal device. For example, the first information includes one or any combination of: a second channel bandwidth, a set of channel bandwidths supported by the terminal device, or a set of bandwidths allowed to be configured by the control resource set 0 of the first cell. For example, the first information includes a second channel bandwidth; or the first information comprises a channel bandwidth set supported by the terminal equipment and a second channel bandwidth; or, the first information includes the second channel bandwidth and a bandwidth set allowed to be configured by the control resource set 0 of the first cell; alternatively, the first information includes the second channel bandwidth, the set of channel bandwidths supported by the terminal device, and the set of bandwidths allowed to be configured by the control resource set 0, and so on.

The second channel bandwidth may be a channel bandwidth acquired from common configuration information of the first cell. For example, the second channel bandwidth may be configured by system information. For example, referring to S52, the network device sends system information to the terminal device, and the terminal device receives the system information from the network device. S52 may occur before S51. The system information may be, for example, SIB1, or may be other system information. The system information may indicate the second channel bandwidth, and the terminal device may obtain the second channel bandwidth according to the system information. In addition, the system information may also indicate the bandwidth of the initial BWP, and the terminal device may also obtain the bandwidth of the initial BWP according to the system information.

Alternatively, the second channel bandwidth may be indicated by a handover command. For example, the network device sends a handover command to the terminal device, and the terminal device receives the handover command from the network device, where the handover command is used to instruct the terminal device to handover to the first cell. The handover command may indicate the second channel bandwidth, for example, the handover command includes the second channel bandwidth (or configuration information of the second channel bandwidth), and the terminal device may obtain the second channel bandwidth according to the handover command.

And the set of channel bandwidths supported by the terminal device and the set of bandwidths allowed to be configured by the control resource set 0 of the first cell are known by the terminal device.

S53, the terminal device determines not to access the first cell based on the bandwidth of the initial BWP of the first cell and the first information.

The terminal device may determine whether to access the first cell based on the first information and the bandwidth of the initial BWP after obtaining the first information, and S53 mainly refers to the case where the terminal device determines not to access the first cell. There are various ways for the terminal device to determine not to access the first cell based on the first information and the bandwidth of the initial BWP, and some examples are described below.

1. A first determination.

For example, the terminal device does not support the bandwidth of the initial BWP, the terminal device determines not to access the first cell.

In this determination manner, if the terminal device does not support the bandwidth of the initial BWP, it may be determined not to access the first cell, and no judgment is needed for other bandwidths.

The terminal device may have different determination manners to determine whether or not to support the bandwidth of the initial BWP.

As a first way for the terminal device to determine whether the bandwidth of the initial BWP is supported, the terminal device may determine whether the bandwidth of the initial BWP is supported through a set of channel bandwidths supported by the terminal device. In this case, the first information may be considered to further include a set of channel bandwidths supported by the terminal device. For example, if there is a channel bandwidth greater than or equal to the bandwidth of the initial BWP in the set of channel bandwidths supported by the terminal device, the terminal device may determine the bandwidth supporting the initial BWP. And if there is no channel bandwidth greater than the bandwidth of the initial BWP or no channel bandwidth equal to the bandwidth of the initial BWP in the set of channel bandwidths supported by the terminal device, the terminal device may determine that the bandwidth of the initial BWP is not supported. Wherein, if there is a channel bandwidth greater than or equal to the bandwidth of the initial BWP in the set of channel bandwidths supported by the terminal device, the number of channel bandwidths greater than or equal to the bandwidth of the initial BWP included in the set of channel bandwidths may be one or more.

As a second way for the terminal device to determine whether or not to support the bandwidth of the initial BWP, the terminal device may determine through a set of bandwidths allowed to be configured by the control resource set 0, where the set of bandwidths allowed to be configured by the control resource set 0 includes one or more bandwidths. That is, to further avoid incorrect cell access, the terminal device may determine not to access the first cell according to a relationship between the bandwidth of the initial BWP and the control resource set 0. If the bandwidth of the initial BWP and any bandwidth included in the bandwidth set allowed to be configured by the control resource set 0 are different, that is, there is no bandwidth that is the same as the bandwidth of the initial BWP in the bandwidth set allowed to be configured by the control resource set 0, the terminal device determines that the initial BWP bandwidth is not supported; alternatively, if the bandwidth of the initial BWP and at least one bandwidth included in the bandwidth set allowed to be configured by the control resource set 0 are the same, that is, one or more bandwidths exist in the bandwidth set allowed to be configured by the control resource set 0, and the one or more bandwidths are the same as the bandwidth of the initial BWP, the terminal device determines that the initial BWP bandwidth is supported. In this way, the bandwidth of the initial BWP can be strictly controlled and should be configured according to the number of RBs corresponding to the control resource set 0. Some possible values of the number of RBs corresponding to the bandwidth allowed to be configured of the control resource set 0 are 24,48, and 96, that is, the set of the number of RBs allowed to be configured of the control resource set 0 is [24,48,96 ]. The number of RBs to which the bandwidth of the initial BWP can correspond may also be related to the subcarrier spacing of the carrier on which the initial BWP is located.

As a third way for the terminal device to determine whether the bandwidth of the initial BWP is supported, the terminal device may determine through the guard bandwidth of the first cell. For example, the terminal device may determine whether Resource Blocks (RBs) of the initial BWP fall outside of the guard bandwidth or the edge of the guard bandwidth of the first cell, determine that the bandwidth of the initial BWP is not supported if the RBs of the initial BWP fall outside of the guard bandwidth or the edge of the guard bandwidth of the first cell, or determine that the bandwidth of the initial BWP is supported if the RBs of the initial BWP fall within the range of the guard bandwidth of the first cell. For example, the terminal device may determine a configuration of a starting RB of the initial BWP, and if the terminal device determines from the starting RB that a bandwidth of a radio frequency filter of the terminal device can fall within a range of a protection bandwidth of the first cell, the terminal device determines a bandwidth that can support the initial BWP, that is, the initial BWP is supported. Otherwise, if the terminal device determines that the edge of the guard bandwidth of the first cell or the guard bandwidth is outside the guard bandwidth when operating on the initial BWP using the rf filter of the terminal device, the terminal device determines that the bandwidth of the initial BWP is not supported, i.e., the initial BWP is not supported.

As a fourth way for the terminal device to determine whether the bandwidth of the initial BWP is supported, the terminal device may determine whether the bandwidth of the initial BWP is supported through a set of channel bandwidths supported by the terminal device. In this case, the first information may be considered to further include a set of channel bandwidths supported by the terminal device. For example, if there is a channel bandwidth smaller than or equal to the second channel bandwidth in the set of channel bandwidths supported by the terminal device, the terminal device may determine that the bandwidth supporting the initial BWP is available. And if there is no channel bandwidth smaller than the second channel bandwidth or no channel bandwidth equal to the second channel bandwidth in the set of channel bandwidths supported by the terminal device, the terminal device may determine that the bandwidth of the initial BWP is not supported. Wherein, if there is a channel bandwidth less than or equal to the second channel bandwidth in the set of channel bandwidths supported by the terminal device, the number of channel bandwidths less than or equal to the second channel bandwidth included in the set of channel bandwidths may be one or more.

As a fifth way for the terminal device to determine whether to support the bandwidth of the initial BWP, the terminal device may determine whether to support the bandwidth of the initial BWP according to the radio frequency specification requirement corresponding to the bandwidth of the second channel. For example, if the terminal device determines that the radio frequency specification requirement corresponding to the second channel bandwidth can be met by operating on the second channel bandwidth, the terminal device determines the bandwidth supporting the initial BWP, or if the terminal device determines that the radio frequency specification requirement corresponding to the second channel bandwidth cannot be met by operating on the second channel bandwidth, the terminal device determines the bandwidth not supporting the initial BWP. In the process of using the initial BWP bandwidth, the terminal device should be able to satisfy the radio frequency indicator corresponding to the second channel bandwidth or the system bandwidth notified on the SIB1, but this does not mean that the terminal device can support the size of the second channel bandwidth or the size of the system bandwidth issued by the SIB 1. That is, the supporting of a channel bandwidth is considered from the size of the supported channel bandwidth on one hand, and is considered to meet the requirement of the radio frequency index on the other hand.

In this case, the first information may be considered to further include a set of channel bandwidths supported by the terminal device. For example, if there is a channel bandwidth smaller than or equal to the second channel bandwidth in the set of channel bandwidths supported by the terminal device, the terminal device may determine that the bandwidth supporting the initial BWP is available. And if there is no channel bandwidth smaller than the second channel bandwidth or no channel bandwidth equal to the second channel bandwidth in the set of channel bandwidths supported by the terminal device, the terminal device may determine that the bandwidth of the initial BWP is not supported. Wherein, if there is a channel bandwidth less than or equal to the second channel bandwidth in the set of channel bandwidths supported by the terminal device, the number of channel bandwidths less than or equal to the second channel bandwidth included in the set of channel bandwidths may be one or more.

For example, referring to fig. 6, a schematic diagram of determining whether to support the bandwidth of the initial BWP according to the guard bandwidth of the first cell is shown for the terminal device. 40MHz in fig. 6 indicates the bandwidth of the radio frequency filter of the terminal device, and the dotted line indicates the waveform of the radio frequency filter of the terminal device. 90MHz represents the guard bandwidth of the first cell, and another 20MHz represents the bandwidth of the initial BWP. It can be seen that the starting RB of the initial BWP is within the range of the guard bandwidth of the first cell.

Please refer to table 1 for an example of the guard bandwidth of a cell.

TABLE 1

For example, referring to table 1, if the bandwidth of the first cell is 50MHz and the subcarrier spacing is 15kHz, the corresponding guard bandwidth is 692.5. N.a in table 1 indicates undefined guard bandwidth.

The above three ways of determining whether or not to support the bandwidth of the initial BWP may be used alone, that is, the terminal device may use any of the above ways to determine whether or not to support the bandwidth of the initial BWP. Alternatively, one or any of the above three manners may also be used in combination, for example, the terminal device determines that the terminal device supports the bandwidth of the initial BWP if it determines that a channel bandwidth greater than or equal to the bandwidth of the initial BWP exists in the channel bandwidth set supported by the terminal device, and determines that the bandwidth of the initial BWP is the same as at least one bandwidth included in the bandwidth set allowed to be configured by the control resource set 0; however, if the terminal device determines that there is no channel bandwidth greater than or equal to the bandwidth of the initial BWP in the channel bandwidth set supported by the terminal device, or determines that the bandwidth of the initial BWP is different from any bandwidth included in the bandwidth set allowed to be configured by the control resource set 0, it may be determined that the terminal device does not support the bandwidth of the initial BWP. For another example, in general, the terminal device may determine only whether a channel bandwidth greater than or equal to the bandwidth of the initial BWP exists in the set of channel bandwidths supported by the terminal device. However, in the embodiment of the present application, in addition to determining whether a channel bandwidth greater than or equal to the bandwidth of the initial BWP exists in the set of channel bandwidths supported by the terminal device, when determining whether the channel bandwidth supported by the terminal device can work on the channel bandwidth of the network, the terminal device may further determine whether the RB of the initial BWP falls at the edge of (or outside) the guard bandwidth of the channel bandwidth of the first cell, and if so, the terminal device may determine that the bandwidth of the initial BWP is not supported even if a channel bandwidth greater than or equal to the bandwidth of the initial BWP exists in the set of channel bandwidths supported by the terminal device.

The bandwidth that does not support the initial BWP may also be described as not supporting the initial BWP.

2. And a second determination.

For example, if the terminal device determines that the second channel bandwidth is not supported, the terminal device determines not to access the first cell.

In this determination mode, if the terminal device does not support the second channel bandwidth, it may be determined not to access the first cell, and it is not necessary to determine other bandwidths. As to the way in which the terminal device determines whether the second channel bandwidth is supported, reference may be made to the description of the embodiment shown in fig. 4.

3. And a third determination mode.

For example, the terminal device determines that the bandwidth of the initial BWP is not supported, and the terminal device determines that the second channel bandwidth is not supported, the terminal device determines not to access the first cell. As to how the terminal device determines whether the bandwidth of the initial BWP is supported and determines whether the bandwidth of the second channel is supported, reference may be made to the foregoing description.

In this implementation, the terminal device determines not to access the first cell if it does not support both the bandwidth for the initial BWP and the second channel bandwidth.

For example, the terminal device may determine whether the bandwidth of the initial BWP is supported, determine whether the bandwidth of the initial BWP is supported if it is determined that the bandwidth of the initial BWP is not supported, and determine not to access the first cell if it is determined that the bandwidth of the second channel is not supported. Alternatively, if the terminal device determines that the bandwidth of the initial BWP is supported, the terminal device may directly determine not to access the first cell without determining whether the second channel bandwidth is supported.

For example, if the terminal device determines that the bandwidth of the initial BWP is not consistent with any bandwidth in the bandwidth set allowed to be configured by the control resource set 0, but the terminal device determines that at least one channel bandwidth (e.g., the second channel bandwidth) of the channel bandwidths supported by the terminal device can support the operation in the first cell, the terminal device determines that the condition of not accessing the first cell is not satisfied. For example, if the bandwidth of the initial BWP is 70MHz, the bandwidth of the second channel is 80MHz, the set of bandwidths allowed to be configured by the control resource set 0 includes a bandwidth, the bandwidth is 50MHz, and the terminal device supports the second channel bandwidth, then the terminal device determines that the condition of not accessing the first cell is not satisfied.

Alternatively, if the BW of the initial BWP does not belong to the bandwidth set allowed to be configured by the control resource set 0, or is not covered by the channel bandwidth that can be supported by the terminal device, the terminal device may determine not to access the first cell, for example, the terminal device may determine the first cell as bar.

Alternatively, the terminal device may determine whether the second channel bandwidth is supported first, and if it is determined that the second channel bandwidth is not supported, determine whether the bandwidth of the initial BWP is supported, and if it is determined that the bandwidth of the initial BWP is not supported, may determine not to access the first cell. Alternatively, if the terminal device determines that the second channel bandwidth is supported, the terminal device may directly determine not to access the first cell without determining whether the bandwidth of the initial BWP is supported.

The determination method of determining not to access the first cell by the terminal device, or which factors are used by the terminal device as the determination conditions for not accessing one cell by the terminal device, may be determined by the terminal device itself, or configured by the network device, or may be specified by a protocol, or may also be a default method, etc. The default way is, for example, to use the second channel bandwidth to determine not to access the first cell, i.e. to use the second or third determination way as above.

If the terminal device determines not to access the first cell, for example, the terminal device may bar (barred) the first cell. Further, the terminal device may enter an idle state or an inactive state, or the terminal device may further perform cell reselection, and the like, so as to achieve normal operation as soon as possible.

In addition, if the terminal device is to perform cell reselection, then, as it is known from the foregoing determination process that the terminal device may not normally operate in the first cell, as an optional implementation, the terminal device may use the first cell as a punished cell, and no longer reselects the first cell within the first duration, for example, the terminal device does not set the first cell as a candidate cell in the cell reselection process within the first duration, and then the terminal device does not reselect the first cell within the first duration. Or, if the terminal device further receives a handover command from the network device, and the first cell is a target cell of the terminal device indicated by the handover command, the terminal device may not be handed over to the first cell, and then the terminal device may not select to be handed over to the first cell within the first duration. By the method, the probability of accessing the terminal equipment to the unsuitable cell can be reduced, and the terminal equipment can be ensured to be accessed to the cell capable of working normally as much as possible. The first time length is set for the terminal device itself, or may be configured by the network device, or may be specified by a protocol, etc.

Fig. 5 illustrates an embodiment describing a procedure in which the terminal device determines not to access the first cell. The terminal device may have another situation to determine that the first cell can be accessed since it has the judgment process. Therefore, the present embodiment provides a third communication method for describing how the terminal device determines that the first cell can be accessed.

Fig. 7 is a flowchart of a third communication method. In the following description, the method is applied to the network architecture shown in fig. 3 as an example. In addition, the method may be performed by two communication devices, e.g. a first communication device and a second communication device. The first communication device or the second communication device may be a network device or a communication device capable of supporting the network device to implement the functions required by the method, or may be a terminal device or a communication device capable of supporting the terminal device to implement the functions required by the method, or may be other communication devices such as a system on chip. The implementation manner of the first communication apparatus or the second communication apparatus is not limited, for example, the two communication apparatuses may be implemented in the same form, for example, both implemented in the form of a device, or the two communication apparatuses may also be implemented in different forms, for example, the first communication apparatus is implemented in the form of a device, the second communication apparatus is implemented in the form of a system-on-chip, and so on. The network device is, for example, a base station.

S71, the terminal device obtains first information, and the first information comprises one or any combination of the following items: a first channel bandwidth, a second channel bandwidth, or a set of bandwidths allowed to be configured by a control resource set 0(CORESET #0) of the first cell.

For example, the first information includes a first channel bandwidth; or, the first information includes a second channel bandwidth; or, the first information includes a bandwidth set allowed to be configured by the control resource set 0; or, the first information includes the first channel bandwidth and a bandwidth set allowed to be configured by the control resource set 0; alternatively, the first information includes the first channel bandwidth, the second channel bandwidth, and the set of bandwidths allowed to be configured by the control resource set 0, and so on.

As an optional manner, the first information may further include a set of channel bandwidths supported by the terminal device. For example, the first information includes one or any combination of: a first channel bandwidth, a second channel bandwidth, a set of channel bandwidths supported by the terminal device, or a set of bandwidths allowed to be configured by a control resource set 0 of the first cell. For example, the first information includes a second channel bandwidth; or the first information comprises a channel bandwidth set supported by the terminal equipment and a first channel bandwidth; or, the first information includes the second channel bandwidth and a bandwidth set allowed to be configured by the control resource set 0 of the first cell; alternatively, the first information includes the first channel bandwidth, the second channel bandwidth, the set of channel bandwidths supported by the terminal device, and the set of bandwidths allowed to be configured by the control resource set 0, and so on.

The second channel bandwidth may be a channel bandwidth acquired from common configuration information of the first cell. For example, the second channel bandwidth may be configured by system information. For example, referring to S72, the network device sends system information to the terminal device, and the terminal device receives the system information from the network device. S72 may occur before S71. The system information may be, for example, SIB1, or may be other system information. The system information may indicate the second channel bandwidth, and the terminal device may obtain the second channel bandwidth according to the system information. In addition, the system information may also indicate the bandwidth of the initial BWP, and the terminal device may also obtain the bandwidth of the initial BWP according to the system information.

S73, the terminal device determines to access the first cell based on the bandwidth of the initial BWP of the first cell and the first information.

The terminal device may determine whether to access the first cell based on the first information and the bandwidth of the initial BWP after obtaining the first information, and S73 mainly refers to the case where the terminal device determines to access the first cell. There are various ways for the terminal device to determine to access the first cell based on the first information and the bandwidth of the initial BWP, and some examples are described below.

1. A first determination.

For example, the terminal device determines that the bandwidth of the initial BWP is supported, the terminal device determines to access the first cell.

In this determination mode, if the terminal device supports the bandwidth of the initial BWP, it can determine to access the first cell without making any other determination.

The terminal device may have different determination manners to determine whether or not to support the bandwidth of the initial BWP. With respect to various ways in which the terminal device determines whether the bandwidth of the initial BWP is supported, reference may be made to the description of the embodiment shown in fig. 5.

2. And a second determination.

For example, the terminal device determines that the second channel bandwidth is supported, and then the terminal device determines to access the first cell.

In this determination mode, if the terminal device supports the second channel bandwidth, it can be determined to access the first cell without making other determinations. As to the way in which the terminal device determines whether the second channel bandwidth is supported, reference may be made to the description of the embodiment shown in fig. 4.

3. And a third determination mode.

For example, the terminal device determines that a first channel bandwidth is supported, then the terminal device determines to access a first cell.

For example, the terminal device obtains the second channel bandwidth through the handover command, and the handover command may also indicate the first channel bandwidth, or the handover command may not indicate the first channel bandwidth as an alternative. In the case that the handover command indicates the first channel bandwidth, the terminal device may support the first channel bandwidth as a determination condition for whether to access the first cell.

In this determination mode, if the terminal device supports the first channel bandwidth, it can be determined to access the first cell without making any other determination. As to the way in which the terminal device determines whether the first channel bandwidth is supported, reference may be made to the description of the embodiment shown in fig. 4.

4. And a fourth determination mode.

For example, the terminal device determines that the bandwidth of the initial BWP is supported, and the terminal device determines that the second channel bandwidth is supported, the terminal device determines to access the first cell. As to the manner in which the terminal device determines whether or not the bandwidth of the initial BWP is supported, reference may be made to the description of the embodiment shown in fig. 5. As to the way in which the terminal device determines whether the second channel bandwidth is supported, reference may be made to the description of the embodiment shown in fig. 4.

Among these, there is a more special case. If the terminal device determines whether the bandwidth of the initial BWP is supported through the set of channel bandwidths supported by the terminal device and determines whether the second channel bandwidth is supported through the set of channel bandwidths, it may be the following situation to determine to access the first cell:

a third channel bandwidth of the set of channel bandwidths supported by the terminal device is greater than or equal to the bandwidth of the initial BWP, and the third channel bandwidth is less than or equal to the second channel bandwidth. In this regard, it may be understood that there is a first subset in the set of channel bandwidths supported by the terminal device, where the first subset includes one or more channel bandwidths in the set of channel bandwidths, and all channel bandwidths included in the first subset are greater than or equal to the bandwidth of the initial BWP. In addition, a second subset also exists in the channel bandwidth set supported by the terminal device, the second subset includes one or more channel bandwidths in the channel bandwidth set, and all channel bandwidths included in the second subset are less than or equal to the second channel bandwidth. The first subset and the second subset intersect, which is referred to as a third channel bandwidth, which may include one or more channel bandwidths.

In this implementation, for example, the terminal device may first determine whether the bandwidth of the initial BWP is supported, and if it is determined that the bandwidth of the initial BWP is supported, then determine whether the bandwidth of the second channel is supported, and if it is determined that the bandwidth of the second channel is also supported, then determine to access the first cell. Alternatively, if the terminal device determines that the bandwidth of the initial BWP is not supported, the terminal device may directly determine that the condition for accessing the first cell is not satisfied without determining whether the second channel bandwidth is supported.

Alternatively, the terminal device may first determine whether the second channel bandwidth is supported, and if it is determined that the second channel bandwidth is supported, determine whether the bandwidth of the initial BWP is supported, and if it is determined that the bandwidth of the initial BWP is also supported, may determine to access the first cell. Alternatively, if the terminal device determines that the second channel bandwidth is not supported, the terminal device may directly determine that the condition for accessing the first cell is not satisfied without determining whether the bandwidth of the initial BWP is supported.

5. And a fourth determination mode.

For example, the terminal device determines that the bandwidth of the initial BWP is supported, and the terminal device determines that the first channel bandwidth is supported, the terminal device determines to access the first cell. With respect to the way in which the terminal device determines whether or not the bandwidth of the initial BWP is supported, reference may be made to the description of the embodiment shown in fig. 5. As to the way in which the terminal device determines whether the first channel bandwidth is supported, reference may be made to the description of the embodiment shown in fig. 4.

a third channel bandwidth of the set of channel bandwidths supported by the terminal device is greater than or equal to the bandwidth of the initial BWP, and the third channel bandwidth is equal to the first channel bandwidth. In this regard, it may be understood that there is a first subset in the set of channel bandwidths supported by the terminal device, where the first subset includes one or more channel bandwidths in the set of channel bandwidths, and all channel bandwidths included in the first subset are greater than or equal to the bandwidth of the initial BWP. In addition, a third subset also exists in the channel bandwidth set supported by the terminal device, the third subset includes one or more channel bandwidths in the channel bandwidth set, and all channel bandwidths included in the third subset are equal to the first channel bandwidth. The third subset and the second subset intersect, which is referred to as a third channel bandwidth, and the third channel bandwidth may include one or more channel bandwidths.

In this implementation, for example, the terminal device may first determine whether the bandwidth of the initial BWP is supported, and if it is determined that the bandwidth of the initial BWP is supported, then determine whether the first channel bandwidth is supported, and if it is determined that the first channel bandwidth is also supported, then determine to access the first cell. Alternatively, if the terminal device determines that the bandwidth of the initial BWP is not supported, the terminal device may directly determine that the condition for accessing the first cell is not satisfied without determining whether the first channel bandwidth is supported.

Alternatively, the terminal device may first determine whether the first channel bandwidth is supported, and if it is determined that the first channel bandwidth is supported, determine whether the bandwidth of the initial BWP is supported, and if it is determined that the bandwidth of the initial BWP is also supported, may determine to access the first cell. Alternatively, if the terminal device determines that the first channel bandwidth is not supported, the terminal device may directly determine that the condition for accessing the first cell is not satisfied without determining whether the bandwidth of the initial BWP is supported.

6. And a sixth determination.

For example, the terminal device determines that the second channel bandwidth is supported, and the terminal device determines that the first channel bandwidth is supported, then the terminal device determines to access the first cell. As to the manner in which the terminal device determines whether the second channel bandwidth is supported, and the manner in which the terminal device determines whether the first channel bandwidth is supported, reference may be made to the description of the embodiment shown in fig. 4.

Among these, there is a more special case. If the terminal device determines whether the first channel bandwidth is supported by the channel bandwidth set supported by the terminal device and determines whether the second channel bandwidth is supported by the channel bandwidth set, then to determine to access the first cell, the following situation may be used:

and a third channel bandwidth in the channel bandwidth set supported by the terminal device is less than or equal to the second channel bandwidth, and the third channel bandwidth is equal to the first channel bandwidth. In this regard, it may be understood that a second subset exists in the set of channel bandwidths supported by the terminal device, where the second subset includes one or more channel bandwidths in the set of channel bandwidths, and all channel bandwidths included in the second subset are less than or equal to the second channel bandwidth. In addition, a third subset exists in the channel bandwidth set supported by the terminal device, the third subset includes one or more channel bandwidths in the channel bandwidth set, and all channel bandwidths included in the third subset are equal to the first channel bandwidth. The third subset and the second subset intersect, which is referred to as a third channel bandwidth, and the third channel bandwidth may include one or more channel bandwidths.

In this implementation, for example, the terminal device may first determine whether the second channel bandwidth is supported, and if it is determined that the second channel bandwidth is supported, then determine whether the first channel bandwidth is supported, and if it is determined that the first channel bandwidth is also supported, then determine to access the first cell. Alternatively, if the terminal device determines that the second channel bandwidth is not supported, the terminal device may directly determine that the condition for accessing the first cell is not satisfied without determining whether the first channel bandwidth is supported.

Alternatively, the terminal device may determine whether the first channel bandwidth is supported, determine whether the second channel bandwidth is supported if the first channel bandwidth is supported, and determine to access the first cell if the second channel bandwidth is also supported. Alternatively, if the terminal device determines that the first channel bandwidth is not supported, the terminal device may directly determine that the condition for accessing the first cell is not satisfied without determining whether the second channel bandwidth is supported.

7. And a seventh determination.

For example, the terminal device determines that the bandwidth of the initial BWP is supported, the terminal device determines that the first channel bandwidth is supported, and the terminal device determines that the second channel bandwidth is supported, the terminal device determines to access the first cell. With respect to the way in which the terminal device determines whether or not the bandwidth of the initial BWP is supported, reference may be made to the description of the embodiment shown in fig. 5. The manner in which the terminal device determines whether the first channel bandwidth is supported and the manner in which the terminal device determines whether the second channel bandwidth is supported can both refer to the description of the embodiment shown in fig. 4.

Among these, there is a more special case. If the terminal device determines whether the bandwidth of the initial BWP is supported through the set of channel bandwidths supported by the terminal device, determines whether the first channel bandwidth is supported through the set of channel bandwidths, and determines whether the second channel bandwidth is supported through the set of channel bandwidths, it may be the following situation to determine to access the first cell:

a third channel bandwidth of the set of channel bandwidths supported by the terminal device is greater than or equal to the bandwidth of the initial BWP, and the third channel bandwidth is less than or equal to the second channel bandwidth and the third channel bandwidth is equal to the first channel bandwidth. In this regard, it may be understood that there is a first subset in the set of channel bandwidths supported by the terminal device, where the first subset includes one or more channel bandwidths in the set of channel bandwidths, and all channel bandwidths included in the first subset are greater than or equal to the bandwidth of the initial BWP. And a second subset exists in the channel bandwidth set supported by the terminal device, the second subset includes one or more channel bandwidths in the channel bandwidth set, and all channel bandwidths included in the second subset are less than or equal to the second channel bandwidth. In addition, a third subset also exists in the channel bandwidth set supported by the terminal device, the third subset includes one or more channel bandwidths in the channel bandwidth set, and all channel bandwidths included in the third subset are equal to the first channel bandwidth. The first subset, the second subset, and the third subset intersect, which is referred to as a third channel bandwidth, which may include one or more channel bandwidths.

In this implementation, for example, the terminal device may first determine whether the bandwidth of the initial BWP is supported, and if it is determined that the bandwidth of the initial BWP is supported, then determine whether the first channel bandwidth is supported, and if it is determined that the first channel bandwidth is supported, then determine whether the second channel bandwidth is supported, and if it is determined that the second channel bandwidth is also supported, then may determine to access the first cell. Alternatively, if the terminal device determines that the bandwidth of the initial BWP is supported, the first channel bandwidth is also supported, but the second channel bandwidth is not supported, it may be determined that the condition for accessing the first cell is not satisfied. Alternatively, if the terminal device determines that the bandwidth of the initial BWP is supported but the first channel bandwidth is not supported, the terminal device may determine that the condition for accessing the first cell is not satisfied without further determining whether the second channel bandwidth is supported. Alternatively, if the terminal device determines that the bandwidth of the initial BWP is not supported, it may determine that the condition for accessing the first cell is not satisfied without determining whether the first channel bandwidth is satisfied and determining whether the second channel bandwidth is satisfied.

Or, the terminal device may determine whether to support the bandwidth of the initial BWP, then determine whether to support the bandwidth of the second channel, and then determine whether to support the bandwidth of the first channel; or, the terminal device may determine whether to support the second channel bandwidth first, then determine whether to support the bandwidth of the initial BWP, and then determine whether to support the first channel bandwidth; or, the terminal device may determine whether to support the second channel bandwidth first, then determine whether to support the first channel bandwidth, and then determine whether to support the bandwidth of the initial BWP; or, the terminal device may determine whether to support the first channel bandwidth first, then determine whether to support the second channel bandwidth, and then determine whether to support the bandwidth of the initial BWP; alternatively, the terminal device may determine whether the first channel bandwidth is supported, determine whether the bandwidth of the initial BWP is supported, and then determine whether the second channel bandwidth is supported. In any case, the determination process may refer to the foregoing.

The above method for determining whether the terminal device accesses the first cell or which factors are used by the terminal device as the determination conditions for accessing the first cell may be determined by the terminal device itself, configured by the network device, or specified by a protocol.

S74, the terminal device accesses the first cell or determines a bandwidth supporting the initial BWP of the first cell.

If the terminal device determines to access the first cell, the terminal device may access the first cell. For example, the terminal device may initiate random access in the first cell through initial BWP, or the terminal device may also handover to the first cell.

The first cell may be accessed if the terminal device determines to support the bandwidth of the initial BWP of the first cell, e.g., the terminal device may initiate random access in the first cell via the initial BWP, or the terminal device may also be handed over to the first cell. Or the terminal device may not access the first cell.

The embodiment shown in fig. 5 and the embodiment shown in fig. 7 may be applied separately, for example, the terminal device may determine not to access the first cell in the manner provided by the embodiment shown in fig. 5, but not determine to access the first cell in the manner provided by the embodiment shown in fig. 7, or the terminal device may determine not to access the first cell in the manner provided by the embodiment shown in fig. 5, but determine to access the first cell in the manner provided by the embodiment shown in fig. 7. Alternatively, the embodiment shown in fig. 5 and the embodiment shown in fig. 7 may also be applied in combination, for example, for a terminal device, the embodiment shown in fig. 5 may be used to determine not to access the first cell, or the embodiment shown in fig. 7 may also be used to determine to access the first cell.

In the embodiment of the application, the terminal equipment can judge whether the terminal equipment can normally work in the first cell before accessing the first cell, if the terminal equipment can normally work, the terminal equipment accesses the first cell again, the probability that the terminal equipment accesses the cell which can not work is reduced, and the terminal equipment is accessed to the cell which can normally work as much as possible. And for the cell which may not work normally, the terminal equipment may not be accessed, and the power consumption and the time consumption caused by the fact that the terminal equipment is accessed to the cell are reduced. In the embodiment of the present application, the terminal device performs the integrated determination of the access first cell by combining the first information and the initial BWP, so that the determination result can be more accurate.

In the embodiment shown in fig. 4, there may be more judgment conditions for the terminal device to determine whether the terminal device can normally operate in the first cell. Next, an embodiment of the present application provides a fourth communication method, in which the terminal device can determine whether the terminal device can normally operate in the first cell with fewer determination conditions.

Fig. 8 is a flowchart of a fourth communication method. In the following description, the method is applied to the network architecture shown in fig. 3 as an example. In addition, the method may be performed by two communication devices, e.g. a first communication device and a second communication device. The first communication device or the second communication device may be a network device or a communication device capable of supporting the network device to implement the functions required by the method, or may be a terminal device or a communication device capable of supporting the terminal device to implement the functions required by the method, or may be other communication devices such as a system on chip. The implementation manner of the first communication apparatus or the second communication apparatus is not limited, for example, the two communication apparatuses may be implemented in the same form, for example, both implemented in the form of a device, or the two communication apparatuses may also be implemented in different forms, for example, the first communication apparatus is implemented in the form of a device, the second communication apparatus is implemented in the form of a system-on-chip, and so on. The network device is, for example, a base station.

S81, before the end device initiates random access, the network device may configure an initial BWP for the end device, so that the end device can perform random access on the initial BWP. At this time, the network device has not obtained the capability information of the terminal device, and then the network device may obtain the capability of the terminal device according to a predefined rule, for example, the network device may estimate the capability of the terminal device in the system and configure the initial BWP for the terminal device according to the estimated capability. For example, the network device may force the terminal device to at least support with

The bandwidth of the bandwidth set allowed to be configured by the corresponding control resource set 0 is closest to and greater than or equal to the bandwidth included in the bandwidth set allowed to be configured by the control resource set 0, and this bandwidth is the bandwidth that the terminal device must support at minimum, for example, the bandwidth is expressed as

About

As will be described later. The subsequent terminal device performs initial access in the initial BWP, and may send the capability information of the terminal device to the network device, and the network device may configure the first channel bandwidth for the terminal device according to the actual capability of the terminal device.

For example, the number of RBs corresponding to the bandwidth included in the allowed configured bandwidth set of the control resource set 0 may be 24, 48, and 96, respectively, and the number of RBs corresponding to the bandwidth of the initial BWP configured by the network may not be strictly 24, 48, or 96, but may be configured in combination with the minimum bandwidth supported by the terminal device. Currently, terminal devices typically support at least 5MHz, 10MHz, and 20MHz bandwidths. For a terminal device operating at a low frequency (which may be referred to as FR1, for example, for frequencies below 6 GHz), it may be assumed that the terminal device must support bandwidths of 5MHz, 10MHz and 20 MHz. Therefore, taking the subcarrier spacing of 15kHz as an example, for a terminal device operating at a low frequency, when the network configures the initial BWP, the number of RBs closest to the number of RBs corresponding to the minimum bandwidth supported by the terminal device may be 25, 52, and 106, which correspond to three bandwidths of 5MHz, 10MHz, and 20MHz supported by the terminal device, respectively. For example, referring to table 2, the network device may configure the bandwidth of the initial BWP for the terminal device operating at low frequency according to table 2.

TABLE 2

In Table 2, N_RBIndicating the number of RBs corresponding to the bandwidth. For example, if the minimum bandwidth supported by the terminal device is 5MHz and the subcarrier spacing is 15kHz, the network device may configure the terminal device with an initial BWP with 25 RBs corresponding to the bandwidth.

Referring again to table 3, some examples of the bandwidth that needs to be met for the rf filter of a terminal device operating at low frequencies.

TABLE 3

The first column in table 3 refers to a subcarrier interval corresponding to a synchronization/physical broadcast channel block (SSB) and a Physical Downlink Control Channel (PDCCH), the second column in table 3 refers to a bandwidth included in a bandwidth set allowed to be configured by a control resource set 0, the 3 rd column in table 3 indicates a minimum bandwidth supported by a terminal device, and the fourth column in table 3 indicates a bandwidth that a radio frequency filter of the terminal device needs to satisfy under a condition that the corresponding conditions of the previous three columns are to be satisfied.

Tables 2 and 3 are directed to terminal devices operating at low frequencies. Referring back to table 4, the network device may configure the bandwidth of the initial BWP for the terminal device operating at high frequency (e.g., for frequencies above 6GHz, which may be referred to as FR 2) according to table 4.

TABLE 4

For example, for a terminal device operating at a high frequency, the bandwidth of the initial BWP for which the network device is configured may be 50MHz or 100 MHz.

Referring again to table 5, some examples of bandwidths that need to be met for the rf filter of a terminal device operating at high frequencies.

TABLE 5

With respect to tables 4 and 5, reference may be made to the descriptions of tables 2 and 3, respectively, the principles being similar.

For example, the bandwidth of the initial BWP configured by the network device may satisfy: the bandwidth of the initial BWP is greater than or equal to at least one bandwidth in a bandwidth set allowed to be configured by the control resource set 0, and is less than or equal to the minimum value of the channel bandwidth supported by the terminal device; or the bandwidth of the initial BWP may satisfy: the bandwidth of the initial BWP is equal to or greater than the maximum of at least one bandwidth of the bandwidth set allowed to be configured for the control resource set 0. For example,

any of the bandwidth sets representing the allowed configurations of the controlling resource set 0The number of RBs corresponding to one bandwidth, or the number of RBs corresponding to the maximum bandwidth included in the bandwidth set allowed to be allocated by the control resource set 0 (or, the number of RBs corresponding to the maximum bandwidth in the bandwidth set allowed to be allocated by the control resource set 0).

Indicating the number of RBs corresponding to the bandwidth of the initial BWP. Then the process of the first step is carried out,

in addition, as an optional way, the bandwidth of the initial BWP is less than or equal to the minimum value of the channel bandwidths supported by the terminal device. Then the process of the first step is carried out,

As another optional implementation, the minimum value of the channel bandwidths supported by the terminal device is less than or equal to the network carrier bandwidth or the second channel bandwidth.

Then, the number of RBs corresponding to the bandwidth of the initial BWP may satisfy the following formula:

in the formula 1, the first and second groups of the compound,

indicating the number of RBs corresponding to the network carrier bandwidth. The network carrier bandwidth may be the same as, or may be different from, the second channel bandwidth. For example, the network carrier bandwidth may be, for example, the second channel bandwidth, or the network carrier bandwidth may be the first channel bandwidthThe bandwidth, or the network carrier bandwidth, may be other bandwidths different from the first channel bandwidth and the second channel bandwidth. The second channel bandwidth may be obtained from common configuration information of the first cell. It is considered that the number of RBs corresponding to the bandwidth of the initial BWP is closest to and greater than or equal to the number of RBs corresponding to any one bandwidth in the bandwidth set allowed to be allocated to the control resource set 0, or the number of RBs corresponding to the bandwidth of the initial BWP is closest to and greater than or equal to the number of RBs corresponding to the maximum bandwidth in the bandwidth set allowed to be allocated to the control resource set 0. Any bandwidth in the configured bandwidth set allowed by the control resource set 0, for example, the minimum supported bandwidth required for the terminal device, that is, the minimum bandwidth supported by the terminal device

Or, the maximum bandwidth in the configured bandwidth set allowed by the resource set 0 is controlled, for example, the minimum bandwidth that must be supported by the terminal device, that is, the minimum bandwidth supported by the terminal device

For example, the terminal device at least supports

The closest bandwidth is greater than or equal to the bandwidth included in the configured bandwidth set allowed by the control resource set 0, and the bandwidth is the minimum bandwidth that the terminal device must support.

For example, the bandwidth of the initial BWP may be less than or equal to the minimum value of the channel bandwidths supported by the terminal device, that is, less than or equal to the minimum channel bandwidth supported by the terminal device (or referred to as the minimum bandwidth supported by the terminal device)

) Or is orIn other words, the bandwidth of the initial BWP may be less than or equal to a fourth channel bandwidth included in the set of channel bandwidths supported by the terminal device.

For example, the fifth channel bandwidth is the minimum value of the channel bandwidths supported by the terminal device, or the fifth channel bandwidth is the channel bandwidth supported by the terminal device, which is greater than or equal to and closest to the channel bandwidth supported by the terminal device in the bandwidth set allowed to be configured by the control resource set 0. Additionally, the fifth channel bandwidth may be less than or equal to the network carrier bandwidth or the second channel bandwidth.

S82, the network device sends configuration information to the terminal device, and the terminal device receives the configuration information from the network device, where the configuration information may configure an initial BWP for the terminal device. For example, the terminal device may perform the random access procedure in the first cell through the initial BWP, and it may also be understood that the terminal device may communicate with the network device in the first cell using the initial BWP.

The configuration information may be carried in system information, for example, SIB1, and sent to the terminal device.

And S83, the terminal equipment carries out random access in the first cell.

For example, the terminal device may perform random access through initial BWP. In the embodiment of the present application, before performing random access, the terminal device does not need to determine whether to support the bandwidth of the initial BWP, and does not need to determine whether to support the bandwidth of the second channel in the random access phase. Instead, after accessing the first cell subsequently, it may be determined whether to continue using the first cell according to the first channel bandwidth configured by the network device.

And S84, the terminal device sends the capability information of the terminal device to the network device, and the network device receives the capability information from the terminal device.

For example, the terminal device may send the capability information of the terminal device to the network device in a random access procedure, for example, send the capability information of the terminal device to the network device through a third message (Msg3) in the random access procedure, or the terminal device may send the capability information of the terminal device to the network device after accessing the first cell. Terminal device The capability information of the device may indicate, for example, a set of channel bandwidths supported by the terminal device, etc. For example, the capability information of the terminal device may also indicate

And the like.

For example, the minimum bandwidth supported by the terminal device may be greater than or equal to any bandwidth in the bandwidth set allowed to be configured by the control resource set 0 of the first cell, or may be greater than or equal to the maximum bandwidth in the bandwidth set allowed to be configured by the control resource set 0 of the first cell, so that the terminal device can operate normally.

The network device may only have the initial BWP be the active BWP before obtaining the capability information of the terminal device, and the initial BWP may include the initial upstream BWP and the initial downstream BWP. The network device may schedule the terminal device to receive the downlink signal on the initial downlink BWP included in the initial BWP, or may schedule the terminal device to transmit the uplink signal on the initial uplink BWP included in the initial BWP.

S85, the network device configures the first channel bandwidth for the terminal device according to the capability information. The first channel bandwidth may be a dedicated channel bandwidth configured for the terminal device. As one understanding of the dedicated channel bandwidth, the dedicated channel bandwidth may comprise a channel bandwidth configured for the terminal device to use in the first cell.

At this time, the network device obtains the actual capability information of the terminal device, and the network device may configure the first channel bandwidth for the terminal device according to the actual capability information of the terminal device. For example, the first channel bandwidth configured by the network device may be less than or equal to a third channel bandwidth in the set of channel bandwidths supported by the terminal device, so that the terminal device can operate normally in the first cell. The third channel bandwidth may include one or more bandwidths.

For example, the number of RBs corresponding to the first channel bandwidth is used

Indicate that

The number of RBs corresponding to the third channel bandwidth in the set of channel bandwidths supported by the terminal device may be less than or equal to. As an example, the third channel bandwidth may be a maximum value of channel bandwidths included in the set of channel bandwidths supported by the terminal device (or described as a maximum channel bandwidth in the set of channel bandwidths supported by the terminal device); or, as another example, the third channel bandwidth may include any one or more bandwidths of channel bandwidths included in the set of channel bandwidths supported by the terminal device. That is, the third channel bandwidth may be a maximum value in the set of channel bandwidths supported by the terminal device, or may not be the maximum value in the set of channel bandwidths supported by the terminal device. For example, the number of RBs corresponding to the maximum value of the channel bandwidth included in the channel bandwidth set supported by the terminal device is used

Is shown to be

In addition, in the set of channel bandwidths supported by the terminal device, at least one channel bandwidth may be smaller than or equal to the network carrier bandwidth, or at least one channel bandwidth may be smaller than or equal to the second channel bandwidth. The second channel bandwidth is a channel bandwidth obtained from the common configuration information of the first cell, and may be obtained from system information, for example, SIB1, for example, the network device may send the configuration information to the terminal device through SIB1 in S82, and this SIB1 may further include the second channel bandwidth. At least one channel bandwidth that is less than or equal to the network carrier bandwidth or the second channel bandwidth may be any channel bandwidth of the set of channel bandwidths, for example, the maximum channel bandwidth of the set of channel bandwidths may or may not be included.

Alternatively, the maximum value of the channel bandwidths included in the channel bandwidth set supported by the terminal device may be less than or equal to the network carrier bandwidth, that is,

in this case, it is preferable that the air conditioner,

in addition, in addition to

In addition to the above-mentioned problems,

may be the channel bandwidth (RF channel BW) of the radio frequency filter of the terminal device closest to the second channel bandwidth. Alternatively, the maximum value of the channel bandwidths included in the channel bandwidth set supported by the terminal device may be smaller than or equal to the second channel bandwidth.

In addition, the first channel bandwidth configured by the network device may also be greater than or equal to the bandwidth of the initial BWP.

Wherein the network carrier bandwidth

It may be a standard bandwidth, i.e. a bandwidth defined in the standard, or it may be a non-standard bandwidth, i.e. a bandwidth not defined in the standard.

If the terminal device does not support the nonstandard bandwidth, the network carrier bandwidth configured by the network device

May be a standard bandwidth; or if the terminal equipment can support the nonstandard bandwidth, the network carrier bandwidth configured by the network equipment

It may be standard bandwidth or non-standard bandwidth.

If the terminal device supports the non-standard bandwidth, one implementation manner is that the network device may not configure the second channel bandwidth through the SIB1, and after the network device obtains the capability information of the terminal device, the network device configures the UE dedicated channel BW to be one of the capabilities supported by the capability report of the terminal device according to the capability of the terminal device in the terminal device dedicated channel BW.

Or, if the terminal device supports the non-standard bandwidth, one implementation manner of the non-standard bandwidth is that the network device may configure the second channel bandwidth through the SIB1, and after the network device obtains the capability information of the terminal device, configure the UE dedicated channel BW according to the capability of the terminal device in the terminal device dedicated channel bandwidth (dedicated channel BW) as one of the capabilities supported by the capability report of the terminal device.

S86, the network device sends an RRC message to the terminal device in the first cell, and the terminal device receives the RRC message from the network device in the first cell. The RRC message may configure a first channel bandwidth for the terminal device, where the first channel bandwidth is a dedicated channel bandwidth configured for the terminal device. As one understanding of the dedicated channel bandwidth, the dedicated channel bandwidth may comprise an operating channel bandwidth configured for the terminal device to use in the first cell.

The RRC message may be, for example, an RRC connection reconfiguration message, or may also be another RRC message, for example, a handover command, and the handover command may instruct the terminal device to handover to the first cell.

S87, the terminal device determines that the first channel bandwidth is less than or equal to a third channel bandwidth included in the channel bandwidth set supported by the terminal device.

After receiving the RRC message, the terminal device may determine the first channel bandwidth to determine whether the terminal device supports the first channel bandwidth set.

For example, the terminal device may determine whether the first channel bandwidth is less than or equal to a third channel bandwidth comprised by the set of channel bandwidths supported by the terminal device. If the first channel bandwidth is less than or equal to a third channel bandwidth included in the channel bandwidth set supported by the terminal device, the terminal device determines that the first channel bandwidth is supported, otherwise, if the first channel bandwidth is greater than the third channel bandwidth included in the channel bandwidth set supported by the terminal device, the terminal device determines that the first channel bandwidth is not supported. Here, the third channel bandwidth is, for example, a channel bandwidth which is less than or equal to and closest to the network carrier bandwidth or the second channel bandwidth and supported by the terminal device.

For example, the third channel bandwidth may include any one or more channel bandwidths in a set of channel bandwidths supported by the terminal device, that is, the terminal device may determine whether the first channel bandwidth is less than or equal to at least one bandwidth in the set of channel bandwidths, the terminal device may determine that the first channel bandwidth is supported as long as there is a channel bandwidth greater than or equal to the first channel bandwidth in the set of channel bandwidths, and the terminal device may determine that the first channel bandwidth is not supported if there is no channel bandwidth greater than or equal to the first channel bandwidth in the set of channel bandwidths, that is, all channel bandwidths in the set of channel bandwidths are less than the first channel bandwidth.

Alternatively, the third channel bandwidth may also be a maximum value of channel bandwidths included in the set of channel bandwidths supported by the terminal device, and then the terminal device may determine whether the first channel bandwidth is less than or equal to the maximum value of the channel bandwidths included in the set of channel bandwidths supported by the terminal device. If the first channel bandwidth is less than or equal to the maximum value of the channel bandwidths included in the channel bandwidth set, the terminal device determines that the first channel bandwidth is supported, otherwise, if the first channel bandwidth is greater than the maximum value of the channel bandwidths included in the channel bandwidth set, the terminal device determines that the first channel bandwidth is not supported.

S87 is exemplified by the terminal device determining whether the first channel bandwidth is less than or equal to a third channel bandwidth included in the set of channel bandwidths supported by the terminal device, and determining that the first channel bandwidth is less than or equal to the third channel bandwidth included in the set of channel bandwidths supported by the terminal device.

And S88, the terminal equipment continues to use the first cell.

For example, the terminal device continuing to use the first cell may include the terminal device continuing to camp on the first cell, or the terminal device continuing to perform data transmission in the first cell.

If the terminal device determines that the first channel bandwidth is less than or equal to a third channel bandwidth included in the set of channel bandwidths supported by the terminal device, or determines that the first channel bandwidth is less than or equal to a maximum value of the channel bandwidths included in the set of channel bandwidths supported by the terminal device, the terminal device may operate normally in the first cell, and the terminal device may continue to camp on the first cell, or may continue to communicate in the first cell. Alternatively, the terminal device may determine whether the following condition is satisfied:

if the condition is satisfied, the terminal device may continue to use the first cell, and if the condition is not satisfied, the terminal device may not use the first cell. With regard to the specific operation of the terminal device not using the first cell, reference may be made to the following description.

For example, the network device may send BWP configuration information to the terminal device, and the terminal device may receive the BWP configuration information from the network device, where the BWP configuration information may configure BWP for the terminal device, and the bandwidth of the BWP is, for example, the first channel bandwidth. The terminal device may communicate over the BWP using a bandwidth of the radio frequency filter that is greater than or equal to the first channel bandwidth and that is closest to a carrier bandwidth (RF CBW) of the radio frequency filter supported by the terminal device.

S87 and S88 are examples where the first channel bandwidth is less than or equal to a third channel bandwidth included in the set of channel bandwidths supported by the terminal device, or the terminal device may determine that the first channel bandwidth is greater than a fourth channel bandwidth included in the set of channel bandwidths. The fourth channel bandwidth is, for example, any one or more channel bandwidths included in the set of channel bandwidths, or may also be a maximum value of the channel bandwidths included in the set of channel bandwidths. In this case, the terminal device determines that the first channel bandwidth is not supported.

The terminal device may not use the first cell if the terminal device does not support the first channel bandwidth. The terminal device does not use the first cell, and may include, for example, one or any combination of the following: the terminal equipment enters an idle state or an inactive state, the terminal equipment determines that the first cell is inaccessible, the terminal equipment determines that the first cell is not resident, the terminal equipment determines to stop executing data transmission in the first cell, and the terminal equipment executes cell reselection, or the terminal equipment executes connection reestablishment in the first cell.

For example, the terminal device may enter an idle state and perform cell reselection, or the terminal device may determine that the first cell is inaccessible and enter the idle state and perform cell reselection, or the terminal device determines that the first cell fails to be accessed, or the terminal device determines that the first cell is not camped on and enters the idle state and performs cell reselection, and so on. If the terminal device has accessed the first cell, for example, the RRC message is an RRC reconfiguration message, the terminal device may determine that the first cell is not campeable; or, if the terminal device does not access the first cell, for example, the RRC message is a handover command, which indicates that the terminal device is handed over to the first cell, and the terminal device does not access the first cell at this time, the terminal device may determine that the first cell is not accessible, or determine that the first cell fails to be accessed. If the terminal device determines that the first cell is inaccessible, the terminal device may not be handed over to the first cell, for example, the terminal device may initiate an RRC connection reestablishment procedure in the second cell to re-access the second cell (the second cell is a cell in which the terminal device currently resides), or the terminal device may also enter an idle state or an inactive state, and the like.

If the terminal device is to perform cell reselection, then, as it is known from the foregoing determination process that the terminal device may not be able to normally operate in the first cell, as an optional implementation manner, the terminal device may use the first cell as a punished cell, and no longer reselects the first cell within the first duration, for example, the terminal device does not set the first cell as a candidate cell in the cell reselection process within the first duration. Alternatively, if the RRC message is a handover command, the terminal device may not handover to the first cell, and the terminal device may not select to handover to the first cell for the first duration. By the method, the probability of accessing the terminal equipment to the unsuitable cell can be reduced, and the terminal equipment can be ensured to be accessed to the cell capable of working normally as much as possible. The first time length is set for the terminal device itself, or may be configured by the network device, or may be specified by a protocol, etc.

The determination conditions of which factors are used by the terminal device as a cell may be determined by the terminal device itself, or may be configured by the network device, or may be specified by a protocol, or may also be a default manner, etc. The default way is to use the first channel bandwidth to determine whether to use the first cell, for example. For example, in this embodiment, the network device may send indication information to the terminal device, and the terminal device receives the indication information from the network device, where the indication information may indicate that the first channel bandwidth is used as a determination condition for accessing the terminal device to the first cell.

The following describes an apparatus for implementing the above method in the embodiment of the present application with reference to the drawings. Therefore, the above contents can be used in the subsequent embodiments, and the repeated contents are not repeated.

Fig. 9 is a schematic block diagram of a communication device 900 according to an embodiment of the present application. Illustratively, the communication apparatus 900 is, for example, a communication device 900. Alternatively, the communication apparatus 900 is, for example, a chip in a communication device, or a combined device or a component having the functions of the terminal device in the communication device. Illustratively, the communication device 900 is a terminal device 900.

The terminal device 900 comprises a processing module 910 and a transceiver module 920. When the terminal device 900 is a terminal device, the transceiver module 920 may be a transceiver, and may include an antenna, a radio frequency circuit, and the like, and the processing module 910 may be a processor, such as a baseband processor, and one or more Central Processing Units (CPUs) may be included in the baseband processor. When the terminal device 900 is a component having the above terminal function, the transceiver module 920 may be a radio frequency unit, and the processing module 910 may be a processor, such as a baseband processor. When the terminal device 900 is a chip system, the transceiver module 920 may be an input/output interface of the chip system (e.g., a baseband chip), and the processing module may be a processor of the chip system and may include one or more central processing units.

Among other things, the processing module 910 may be used to perform all operations performed by the terminal device in the embodiment shown in fig. 4 except transceiving operations, e.g., S42-S44, and/or other processes for supporting the techniques described herein. The transceiving module 920 may be used to perform all transceiving operations performed by the terminal device in the embodiment illustrated in fig. 4, e.g., S41 and S45, and/or other processes for supporting the techniques described herein.

In addition, the transceiver module 920 may be a functional module, which can perform both the transmitting operation and the receiving operation, for example, the transceiver module 920 may be used to perform all the transmitting operation and the receiving operation performed by the terminal device in the embodiment shown in fig. 4, for example, when the transmitting operation is performed, the transceiver module 920 may be considered as a transmitting module, and when the receiving operation is performed, the transceiver module 920 may be considered as a receiving module; alternatively, the transceiver 920 may also be a general term for two functional modules, which are respectively a transmitting module and a receiving module, where the transmitting module is configured to complete a transmitting operation, for example, the transmitting module may be configured to perform all transmitting operations performed by the terminal device in the embodiment shown in fig. 4, and the receiving module is configured to complete a receiving operation, for example, the receiving module may be configured to perform all receiving operations performed by the terminal device in the embodiment shown in fig. 4.

For example, the transceiver module 920 is configured to receive an RRC message from a network device;

a processing module 910, configured to determine that a second channel bandwidth is not supported, where the second channel bandwidth is a channel bandwidth obtained from common configuration information of a first cell;

a processing module 910, further configured to determine that the first channel bandwidth indicated by the RRC message is not supported or determine that the RRC message does not include the first channel bandwidth;

the processing module 910 is further configured to not use the first cell.

As an optional implementation, the processing module 910 is configured to not use the first cell by one or any combination of the following:

entering an idle state or an inactive state;

determining that the first cell is inaccessible;

determining that the first cell is non-campeable;

a cell reselection is performed.

As an optional implementation manner, the first channel bandwidth is an operating channel bandwidth that can be used by terminal device 900 in the first cell.

As an optional implementation manner, the RRC message is used to instruct the terminal device 900 to handover to the first cell.

As an alternative to the above-described embodiment,

a transceiver module 920, further configured to receive system information from the network device, where the system information indicates the second channel bandwidth; or the like, or, alternatively,

The RRC message also indicates the second channel bandwidth.

As an optional implementation manner, the processing module 910 is configured to determine that the second channel bandwidth is not supported by the following manners, including:

it is determined that no bandwidth less than or equal to the second channel bandwidth exists in the set of channel bandwidths supported by the terminal device 900.

As an optional implementation manner, the processing module 910 is further configured to determine that at least one channel bandwidth exists in the set of channel bandwidths supported by the terminal device 900, and determine that the second channel bandwidth is supported.

As an alternative to the above-described embodiment,

a transceiving module 920, further configured to receive system information from the network device, the system information indicating that the initial BWP:

a processing module 910, further configured to determine that the second channel bandwidth is greater than or equal to the bandwidth of the initial BWP.

As an optional implementation manner, the system information further indicates an initial BWP, and the processing module 910 is further configured to determine that at least one channel bandwidth greater than or equal to the bandwidth of the initial BWP exists in the set of channel bandwidths supported by the terminal device 900.

As an optional implementation, the processing module 910 is further configured to perform random access in the first cell.

As an optional implementation manner, the terminal device 900 performs cell reselection, and the processing module 910 is further configured to not set the first cell as a candidate cell in the cell reselection process for a first time period.

As an optional implementation manner, the transceiver module 920 is further configured to receive indication information from the network device, where the indication information is used to instruct the terminal device 900 to use the first channel bandwidth and/or the first channel bandwidth as a determination condition for accessing the first cell.

It should be understood that the processing module 910 in the embodiments of the present application may be implemented by a processor or a processor-related circuit component, and the transceiver module 920 may be implemented by a transceiver or a transceiver-related circuit component.

As shown in fig. 10, an embodiment of the present application further provides a communication device 1000. Exemplarily, the communication apparatus 1000 is, for example, a communication device 1000. Alternatively, the communication apparatus 1000 is, for example, a chip in a communication device, or a combined device or a component having the functions of the terminal device in a communication device. Illustratively, the communication device is, for example, a terminal device, or may also be a system-on-chip or the like. The communication device 1000 includes a processor 1010, a memory 1020, and a transceiver 1030, wherein the memory 1020 stores instructions or programs therein, and the processor 1010 is configured to execute the instructions or programs stored in the memory 1020. When the instructions or programs stored in the memory 1020 are executed, the processor 1010 is configured to perform the operations performed by the processing module 910 in the above embodiments, and the transceiver 1030 is configured to perform the operations performed by the transceiver module 920 in the above embodiments.

The transceiver 1030 may be a functional unit that can perform both the transmitting operation and the receiving operation, for example, the transceiver 1030 may be configured to perform all the transmitting operation and the receiving operation performed by the terminal device in the embodiment shown in fig. 4, for example, when the transmitting operation is performed, the transceiver 1030 may be considered as a transmitter, and when the receiving operation is performed, the transceiver 1030 may be considered as a receiver; alternatively, the transceiver 1030 may also be a general term for two functional units, which are respectively a transmitter and a receiver, where the transmitter is configured to perform a transmitting operation, for example, the transmitter may be configured to perform all transmitting operations performed by the terminal device in the embodiment shown in fig. 4, and the receiver is configured to perform a receiving operation, for example, the receiver may be configured to perform all receiving operations performed by the terminal device in the embodiment shown in fig. 4.

It should be understood that the communication apparatus 900 or the communication apparatus 1000 according to the embodiment of the present application may implement the function of the terminal device in the embodiment shown in fig. 4, and the operation and/or the function of each module in the communication apparatus 900 or the communication apparatus 1000 are respectively for implementing the corresponding flow in the embodiment shown in fig. 4, and are not described herein again for brevity.

Fig. 11 is a schematic block diagram of a communication device 1100 provided in an embodiment of the present application. Exemplarily, the communication apparatus 1100 is, for example, a communication device 1100. Alternatively, the communication apparatus 1100 is, for example, a chip in a communication device, or a combined device or a component having the functions of the terminal device in the communication device. Exemplarily, the communication device 1100 is a terminal device 1100.

Terminal device 1100 includes a processing module 1110 and a transceiver module 1120. When the terminal device 1100 is a terminal device, the transceiver module 1120 may be a transceiver, and may include an antenna, a radio frequency circuit, and the like, and the processing module 1110 may be a processor, such as a baseband processor, and one or more Central Processing Units (CPUs) may be included in the baseband processor. When the terminal device 1100 is a component having the above terminal function, the transceiver module 1120 may be a radio frequency unit, and the processing module 1110 may be a processor, such as a baseband processor. When the terminal device 1100 is a chip system, the transceiver module 1120 may be an input/output interface of the chip system (e.g., a baseband chip), and the processing module may be a processor of the chip system and may include one or more central processing units.

Among other things, the processing module 1110 may be used to perform all operations performed by the terminal device in the embodiment shown in fig. 5 except transceiving operations, e.g., S51 and S53, and/or other processes for supporting the techniques described herein. The transceiver module 1120 may be used to perform all transceiving operations performed by a terminal device in the embodiment shown in fig. 5, e.g., S52, and/or other processes for supporting the techniques described herein.

In addition, the transceiver module 1120 may be a functional module that can perform both the transmitting operation and the receiving operation, for example, the transceiver module 1120 may be used to perform all the transmitting operation and the receiving operation performed by the terminal device in the embodiment shown in fig. 5, for example, when the transmitting operation is performed, the transceiver module 1120 may be considered as a transmitting module, and when the receiving operation is performed, the transceiver module 1120 may be considered as a receiving module; alternatively, the transceiver 1120 may also be a general term for two functional modules, which are a transmitting module and a receiving module respectively, where the transmitting module is configured to complete a transmitting operation, for example, the transmitting module may be configured to perform all transmitting operations performed by the terminal device in the embodiment shown in fig. 5, and the receiving module is configured to complete a receiving operation, for example, the receiving module may be configured to perform all receiving operations performed by the terminal device in the embodiment shown in fig. 5.

For example, the processing module 1110 is configured to obtain first information, where the first information includes one or more of a second channel bandwidth or a set of bandwidths allowed to be configured by a control resource set 0 of a first cell, and the second channel bandwidth is a channel bandwidth obtained from common configuration information of the first cell;

the processing module 1110 is further configured to determine not to access the first cell based on the bandwidth of the initial BWP of the first cell and the first information.

As an optional embodiment, the processing module 1110 is configured to determine not to access the first cell based on the bandwidth of the initial BWP of the first cell and the first information by:

determining not to access the first cell.

As an alternative embodiment, the processing module 1110 is configured to determine the bandwidth that does not support the initial BWP by:

As an optional implementation manner, the processing module 1110 is configured to determine that the bandwidth that does not support the initial BWP by:

As an optional implementation, the processing module 1110 is configured to determine that the second channel bandwidth is not supported by:

it is determined that there is no channel bandwidth smaller than or equal to the second channel bandwidth in the set of channel bandwidths supported by the terminal device 1100.

and determining that the second channel bandwidth does not meet the index parameter requirement of the radio frequency filter of the terminal device 1100.

As an alternative to the above-described embodiment,

the transceiver module 1120 is further configured to receive indication information from the network device, where the indication information is used to instruct the terminal device 1100 to use one or any combination of the following as a determination condition for accessing the first cell:

As an optional implementation manner, the processing module 1110 is further configured to enable the terminal device 1100 to enter an idle state or an inactive state, or enable the terminal device 1100 to perform cell reselection.

As an optional implementation manner, the terminal device 1100 performs cell reselection, and the processing module 1110 is further configured to not set the first cell as a candidate cell in the cell reselection process for the first time period.

It is understood that the processing module 1110 in the embodiments of the present application may be implemented by a processor or a processor-related circuit component, and the transceiver module 1120 may be implemented by a transceiver or a transceiver-related circuit component.

As shown in fig. 12, an embodiment of the present application further provides a communication apparatus 1200. Exemplarily, the communication apparatus 1200 is, for example, a communication device 1200. Alternatively, the communication device 1200 is, for example, a chip in a communication device, or a combined device or a component having the functions of the terminal device in the communication device. Illustratively, the communication device is, for example, a terminal device, or may also be a system-on-chip or the like. The communication apparatus 1200 comprises a processor 1210, a memory 1220 and a transceiver 1230, wherein the memory 1220 stores instructions or programs and the processor 1210 is configured to execute the instructions or programs stored in the memory 1220. When the instructions or programs stored in the memory 1220 are executed, the processor 1210 is configured to perform the operations performed by the processing module 1110 in the above embodiments, and the transceiver 1230 is configured to perform the operations performed by the transceiver module 1120 in the above embodiments.

The transceiver 1230 may be a functional unit that can perform both the transmitting operation and the receiving operation, for example, the transceiver 1230 may be used to perform all the transmitting operation and the receiving operation performed by the terminal device in the embodiment shown in fig. 5, for example, when the transmitting operation is performed, the transceiver 1230 may be considered as a transmitter, and when the receiving operation is performed, the transceiver 1230 may be considered as a receiver; alternatively, the transceiver 1230 may also be a general term for two functional units, namely a transmitter and a receiver, where the transmitter is used to perform the transmitting operation, for example, the transmitter may be used to perform all the transmitting operations performed by the terminal device in the embodiment shown in fig. 5, and the receiver is used to perform the receiving operation, for example, the receiver may be used to perform all the receiving operations performed by the terminal device in the embodiment shown in fig. 5.

It should be understood that the communication apparatus 1100 or the communication apparatus 1200 according to the embodiment of the present application may implement the function of the terminal device in the embodiment shown in fig. 5, and the operation and/or the function of each module in the communication apparatus 1100 or the communication apparatus 1200 are respectively for implementing the corresponding flow in the embodiment shown in fig. 5, and are not described herein again for brevity.

Fig. 13 is a schematic block diagram of a communication device 1300 according to an embodiment of the present application. Exemplarily, the communication apparatus 1300 is, for example, a communication device 1300. Alternatively, the communication apparatus 1300 is, for example, a chip in a communication device, or a combined device or a component having the functions of the terminal device in the communication device. Exemplarily, the communication device 1300 is a terminal device 1300.

Terminal device 1300 includes a processing module 1310. Optionally, a transceiver module 1320 may also be included. When the terminal device 1300 is a terminal device, the transceiver module 1320 may be a transceiver, and may include an antenna, a radio frequency circuit, and the like, and the processing module 1310 may be a processor, such as a baseband processor, and one or more Central Processing Units (CPUs) may be included in the baseband processor. When the terminal device 1300 is a component having the above terminal function, the transceiver module 1320 may be a radio frequency unit, and the processing module 1310 may be a processor, such as a baseband processor. When the terminal device 1300 is a system-on-chip, the transceiver module 1320 may be an input/output interface of the system-on-chip (e.g., a baseband chip), and the processing module may be a processor of the system-on-chip and may include one or more central processing units.

Among other things, the processing module 1310 may be used to perform all operations performed by the terminal device in the embodiment shown in fig. 7 except transceiving operations, e.g., S71 and S73, and/or other processes for supporting the techniques described herein. The transceiving module 1320 may be utilized to perform all transceiving operations performed by the terminal device in the embodiment illustrated in fig. 7, e.g., S72 and S74, and/or other processes for supporting the techniques described herein.

In addition, the transceiver module 1320 may be a functional module, which can perform both the transmitting operation and the receiving operation, for example, the transceiver module 1320 may be used to perform all the transmitting operation and the receiving operation performed by the terminal device in the embodiment shown in fig. 7, for example, when the transmitting operation is performed, the transceiver module 1320 may be considered as a transmitting module, and when the receiving operation is performed, the transceiver module 1320 may be considered as a receiving module; alternatively, the transceiver 1320 may also be a general term for two functional modules, which are a transmitting module and a receiving module respectively, where the transmitting module is used to complete the transmitting operation, for example, the transmitting module may be used to perform all the transmitting operations performed by the terminal device in the embodiment shown in fig. 7, and the receiving module is used to complete the receiving operation, for example, the receiving module may be used to perform all the receiving operations performed by the terminal device in the embodiment shown in fig. 7.

For example, the processing module 1310 is configured to obtain first information, where the first information includes one or more of a first channel bandwidth, a second channel bandwidth, or a set of bandwidths allowed to be configured by a control resource set 0 of a first cell, where the first channel bandwidth is an operating channel bandwidth that can be used by the terminal device 1300 in the first cell, and the second channel bandwidth is a channel bandwidth obtained from common configuration information of the first cell;

the processing module 1310 is further configured to determine to access the first cell or determine a bandwidth supporting the initial BWP based on the bandwidth of the initial BWP of the first cell and the first information.

As an optional embodiment, the processing module 1310 is configured to determine to access the first cell based on the bandwidth of the initial BWP of the first cell and the first information by:

As an alternative embodiment, the processing module 1310 is configured to determine the bandwidth supporting the initial BWP by:

it is determined that a channel bandwidth greater than or equal to the bandwidth of the initial BWP exists in the set of channel bandwidths supported by the terminal device 1300.

As an alternative embodiment, the processing module 1310 is configured to determine that the second channel bandwidth is supported by:

And determining that a channel bandwidth smaller than or equal to the second channel bandwidth exists in the channel bandwidth set supported by the terminal device 1300.

and determining that the terminal device 1300 can meet the radio frequency index requirement corresponding to the second channel bandwidth when working on the second channel bandwidth.

As an optional implementation, the processing module 1310 is configured to determine that the first channel bandwidth is supported by:

it is determined that a channel bandwidth equal to the first channel bandwidth exists in the set of channel bandwidths supported by the terminal device 1300.

As an alternative embodiment, the processing module 1310 is configured to determine that the first channel bandwidth is supported by: and determining that the terminal device 1300 can meet the radio frequency index requirement corresponding to the first channel bandwidth when working on the first channel bandwidth.

It is understood that the processing module 1310 in the embodiments of the present application may be implemented by a processor or a processor-related circuit component, and the transceiver module 1320 may be implemented by a transceiver or a transceiver-related circuit component.

As shown in fig. 14, an embodiment of the present application further provides a communication apparatus 1400. Exemplarily, the communication apparatus 1400 is, for example, a communication device 1400. Alternatively, the communication device 1400 is, for example, a chip in a communication device, or a combined device or a component having the functions of the terminal device in the communication device. Illustratively, the communication device is, for example, a terminal device, or may also be a system-on-chip or the like. The communication device 1400 includes a processor 1410, a memory 1420, and a transceiver 1430, wherein the memory 1420 stores instructions or programs therein and the processor 1410 is configured to execute the instructions or programs stored in the memory 1420. When the instructions or programs stored in the memory 1420 are executed, the processor 1410 is configured to perform the operations performed by the processing module 1310 in the above embodiments, and the transceiver 1430 is configured to perform the operations performed by the transceiver 1320 in the above embodiments.

Where the transceiver 1430 may be a functional unit that can perform both transmission and reception operations, for example, the transceiver 1430 may be used to perform all of the transmission and reception operations performed by the terminal device in the embodiment shown in fig. 7, for example, when performing a transmission operation, the transceiver 1430 may be considered a transmitter, and when performing a reception operation, the transceiver 1430 may be considered a receiver; alternatively, the transceiver 1430 may be a general term for two functional units, namely a transmitter and a receiver, respectively, the transmitter is used for performing the transmission operation, for example, the transmitter may be used for performing all the transmission operations performed by the terminal device in the embodiment shown in fig. 7, and the receiver is used for performing the reception operation, for example, the receiver may be used for performing all the reception operations performed by the terminal device in the embodiment shown in fig. 7.

It should be understood that the communication apparatus 1300 or 1400 according to the embodiment of the present application may implement the function of the terminal device in the embodiment shown in fig. 7, and the operation and/or function of each module in the communication apparatus 1300 or 1400 are respectively for implementing the corresponding flow in the embodiment shown in fig. 7, and are not described herein again for brevity.

Fig. 15 is a schematic block diagram of a communication device 1500 provided in an embodiment of the present application. The communication apparatus 1500 is illustratively a communication device 1500, for example. Alternatively, the communication apparatus 1500 is, for example, a chip in a communication device, or a combined device or a component having the functions of the terminal device in a communication device. Illustratively, the communication device 1500 is a terminal device 1500.

Terminal apparatus 1500 includes a processing module 1510. Optionally, a transceiver module 1520 may also be included. When the terminal device 1500 is a terminal device, the transceiver module 1520 may be a transceiver, which may include an antenna, a radio frequency circuit, and the like, and the processing module 1510 may be a processor, such as a baseband processor, which may include one or more Central Processing Units (CPUs). When the terminal device 1500 is a component having the above terminal function, the transceiving module 1520 may be a radio frequency unit, and the processing module 1510 may be a processor, such as a baseband processor. When the terminal device 1500 is a chip system, the transceiver module 1520 may be an input/output interface of the chip system (e.g., a baseband chip), and the processing module may be a processor of the chip system and may include one or more central processing units.

Among other things, the processing module 1510 may be used to perform all operations performed by the terminal device in the embodiment shown in fig. 8 except transceiving operations, e.g., S87 and S88, and/or other processes for supporting the techniques described herein. The transceiving module 1520 may be used to perform all transceiving operations performed by the terminal device in the embodiment shown in fig. 8, such as S82, S83, S84, and S86, and/or other processes for supporting the techniques described herein.

In addition, the transceiver module 1520 may be a functional module that can perform both the transmitting operation and the receiving operation, for example, the transceiver module 1520 may be used to perform all the transmitting operation and the receiving operation performed by the terminal device in the embodiment shown in fig. 8, for example, when the transmitting operation is performed, the transceiver module 1520 may be considered as a transmitting module, and when the receiving operation is performed, the transceiver module 1520 may be considered as a receiving module; alternatively, the transceiver module 1520 may also be a general term for two functional modules, which are a transmitting module and a receiving module respectively, where the transmitting module is configured to complete a transmitting operation, for example, the transmitting module may be configured to perform all transmitting operations performed by the terminal device in the embodiment shown in fig. 8, and the receiving module is configured to complete a receiving operation, for example, the receiving module may be configured to perform all receiving operations performed by the terminal device in the embodiment shown in fig. 8.

For example, the transceiver module 1520 is configured to receive, in a first cell, an RRC message from a network device, where the RRC message is used to configure a first channel bandwidth for the terminal device 1500, where the first channel bandwidth is a channel bandwidth configured for the terminal device and used in the first cell;

a processing module 1510 configured to determine that the first channel bandwidth is less than or equal to a third channel bandwidth included in the set of channel bandwidths supported by the terminal device 1500;

a processing module 1510 is further configured to continue using the first cell.

As an optional implementation manner, the third channel bandwidth is a channel bandwidth supported by the terminal device that is less than or equal to and closest to a network carrier bandwidth or a second channel bandwidth.

As an alternative to the above-described embodiment,

the maximum value of the channel bandwidths included in the set of channel bandwidths supported by the terminal device 1500 is less than or equal to the network carrier bandwidth or the second channel bandwidth; or the like, or, alternatively,

at least one channel bandwidth is less than or equal to the network carrier bandwidth or the second channel bandwidth in the channel bandwidths included in the set of channel bandwidths supported by the terminal device 1500;

As an optional implementation, the transceiving module 1520 is further configured to receive configuration information from the network device, where the configuration information is used to configure an initial BWP for the terminal device 1500, and the initial BWP is used for the terminal device 1500 to communicate with the network device in the first cell, where a bandwidth of the initial BWP is greater than or equal to at least one bandwidth in a set of bandwidths allowed to be configured by the control resource set 0 or greater than or equal to a maximum value in at least one bandwidth in a set of bandwidths allowed to be configured by the control resource set 0.

As an alternative to the above-described embodiment,

As an optional implementation manner, the fifth channel bandwidth supported by the terminal device 1500 is less than or equal to the network carrier bandwidth or a second channel bandwidth, where the second channel bandwidth is a channel bandwidth obtained from the common configuration information of the first cell.

As an optional implementation manner, the transceiver module 1520 is further configured to send, to the network device, capability information of the terminal device 1500, where the capability information is used to configure the first channel bandwidth.

As an optional implementation, the processing module 1510 is further configured to:

determining that the first channel bandwidth is larger than a fourth channel bandwidth in channel bandwidths included in the set of channel bandwidths supported by the terminal device 1500;

the first cell is not used.

As an optional implementation, the processing module 1510 is configured to not use the first cell by one or any combination of the following:

entering an idle state or an inactive state; or the like, or, alternatively,

performing cell reselection; or the like, or, alternatively,

performing connection re-establishment in the first cell.

As an optional implementation manner, the terminal device 1500 performs cell reselection, and the processing module 1510 is further configured to not set the first cell as a candidate cell in the cell reselection process for the first time period.

It should be understood that the processing module 1510 in the embodiments of the present application may be implemented by a processor or processor-related circuit components, and the transceiver module 1520 may be implemented by a transceiver or transceiver-related circuit components.

As shown in fig. 16, the present embodiment also provides a communication device 1600. Illustratively, the communication apparatus 1600 is, for example, a communication device 1600. Alternatively, the communication apparatus 1600 is, for example, a chip in a communication device, or a combined device or a component having the functions of the terminal device in the communication device. Illustratively, the communication device is, for example, a terminal device, or may also be a system-on-chip or the like. The communication device 1600 comprises a processor 1610, a memory 1620 and a transceiver 1630, wherein the memory 1620 stores instructions or programs therein, and the processor 1610 is configured to execute the instructions or programs stored in the memory 1620. When the instructions or programs stored in the memory 1620 are executed, the processor 1610 is configured to perform the operations performed by the processing module 1510 in the above embodiments, and the transceiver 1630 is configured to perform the operations performed by the transceiver module 1520 in the above embodiments.

The transceiver 1630 may be a functional unit that can perform both the transmitting operation and the receiving operation, for example, the transceiver 1630 may be used to perform all the transmitting operation and the receiving operation performed by the terminal device in the embodiment shown in fig. 8, for example, when the transmitting operation is performed, the transceiver 1630 may be considered as a transmitter, and when the receiving operation is performed, the transceiver 1630 may be considered as a receiver; alternatively, the transceiver 1630 may also be a general term for two functional units, namely a transmitter and a receiver, respectively, where the transmitter is configured to perform a transmitting operation, for example, the transmitter may be configured to perform all transmitting operations performed by the terminal device in the embodiment shown in fig. 8, and the receiver is configured to perform a receiving operation, for example, the receiver may be configured to perform all receiving operations performed by the terminal device in the embodiment shown in fig. 8.

It should be understood that the communication apparatus 1500 or the communication apparatus 1600 according to the embodiment of the present application may implement the functions of the terminal device in the embodiment shown in fig. 8, and the operations and/or functions of the respective modules in the communication apparatus 1500 or the communication apparatus 1600 are respectively for implementing the corresponding flows in the embodiment shown in fig. 8, and are not described herein again for brevity.

Fig. 17 is a schematic block diagram of a communication apparatus 1700 according to an embodiment of the present application. Exemplarily, the communication apparatus 1700 is, for example, a communication device 1700. Alternatively, the communication apparatus 1700 is, for example, a chip in a communication device, or a combined device or component having the functions of the network device in the communication device. Illustratively, the communication device 1700 is a network device 1700.

Network device 1700 includes a processing module 1710. Optionally, a transceiver module 1720 may also be included. When the network device 1700 is a terminal device, the transceiver module 1720 may be a transceiver, may include an antenna, a radio frequency circuit, and the like, and the processing module 1710 may be a processor, such as a baseband processor, which may include one or more Central Processing Units (CPUs). When the network device 1700 is a component having the network functions described above, the transceiving module 1720 may be a radio frequency unit and the processing module 1710 may be a processor. When the network device 1700 is a chip system, the transceiver module 1720 may be an input-output interface of the chip system (e.g., a baseband chip), and the processing module may be a processor of the chip system and may include one or more central processing units.

Among other things, processing module 1710 may be configured to perform all operations performed by the network device in the embodiment illustrated in fig. 8 except transceiving operations, e.g., S81 and S85, and/or other processes to support the techniques described herein. The transceiving module 1720 may be used to perform all transceiving operations performed by a network device in the embodiment illustrated in fig. 8, e.g., S82, S83, S84, and S86, and/or other processes for supporting the techniques described herein.

In addition, the transceiver module 1720 may be a functional module that performs both transmit and receive operations, for example, the transceiver module 1720 may be configured to perform all transmit and receive operations performed by the network device in the embodiment shown in fig. 8, for example, the transceiver module 1720 may be considered a transmit module when performing transmit operations, and the transceiver module 1720 may be considered a receive module when performing receive operations; alternatively, the transceiver module 1720 may also be a general term for two functional modules, which are a transmitting module and a receiving module, respectively, where the transmitting module is configured to complete a transmitting operation, for example, the transmitting module may be configured to perform all transmitting operations performed by the network device in the embodiment shown in fig. 8, and the receiving module is configured to complete a receiving operation, for example, the receiving module may be configured to perform all receiving operations performed by the network device in the embodiment shown in fig. 8.

For example, the transceiving module 1720 is configured to receive capability information of a terminal device from the terminal device;

a processing module 1710, configured to configure, according to the capability information, a first channel bandwidth for the terminal device, where the first channel bandwidth is a working bandwidth configured for the terminal device and used in a first cell, and the first channel bandwidth is less than or equal to a third channel bandwidth included in a set of channel bandwidths supported by the terminal device;

the transceiving module 1720 is further configured to send an RRC message to the terminal device, where the RRC message is used to indicate the first channel bandwidth.

As an optional implementation manner, the third channel bandwidth is a channel bandwidth supported by the terminal device which is less than or equal to and closest to a network carrier bandwidth or a second channel bandwidth.

As an alternative to the above-described embodiment,

a processing module 1710, further configured to configure, for the terminal device, a bandwidth of an initial BWP according to a pre-estimated capability of the terminal device and/or a set of bandwidths allowed to be configured by the controlling resource set 0 of the first cell, where the bandwidth of the initial BWP is greater than or equal to at least one bandwidth of the set of bandwidths allowed to be configured by the controlling resource set 0 of the first cell or greater than or equal to a maximum value of the at least one bandwidth of the set of bandwidths allowed to be configured by the controlling resource set 0;

the transceiving module 1720 is further configured to send configuration information to the terminal device, where the configuration information is used to configure the initial BWP, and the initial BWP is used for the terminal device to communicate with the network device 1700 in the first cell.

As an alternative to the above-described embodiment,

As an optional implementation manner, the fifth channel bandwidth supported by the terminal device is less than or equal to the second channel bandwidth, where the second channel bandwidth is a channel bandwidth obtained from the common configuration information of the first cell.

As an alternative embodiment, the first channel bandwidth is greater than or equal to the bandwidth of the initial BWP.

It is to be appreciated that the processing module 1710 in embodiments of the present application may be implemented by a processor or processor-related circuit components, and the transceiver module 1720 may be implemented by a transceiver or transceiver-related circuit components.

As shown in fig. 18, an embodiment of the present application further provides a communication device 1800. Illustratively, the communication device 1800 is, for example, a communication device 1800. Alternatively, the communication device 1800 is, for example, a chip in a communication device, or a combined device or component having the functions of the network device in the communication device. Illustratively, the communication device is, for example, a network device, or may also be a system-on-chip or the like. The communications apparatus 1800 includes a processor 1810, a memory 1820 and a transceiver 1830, wherein the memory 1820 stores instructions or programs and the processor 1810 is configured to execute the instructions or programs stored in the memory 1820. When the instructions or programs stored in the memory 1820 are executed, the processor 1810 is configured to perform the operations performed by the processing module 1710 in the above embodiments, and the transceiver 1830 is configured to perform the operations performed by the transceiver module 1720 in the above embodiments.

The transceiver 1830 may be a functional unit that can perform both transmission and reception operations, for example, the transceiver 1830 may be used to perform all the transmission and reception operations performed by the network device in the embodiment shown in fig. 8, for example, when performing the transmission operation, the transceiver 1830 may be considered as a transmitter, and when performing the reception operation, the transceiver 1830 may be considered as a receiver; alternatively, the transceiver 1830 may also be a general term for two functional units, namely a transmitter and a receiver, where the transmitter is configured to perform a transmitting operation, for example, the transmitter may be configured to perform all transmitting operations performed by the network device in the embodiment shown in fig. 8, and the receiver is configured to perform a receiving operation, for example, the receiver may be configured to perform all receiving operations performed by the network device in the embodiment shown in fig. 8.

It should be understood that the communication apparatus 1700 or the communication apparatus 1800 according to the embodiment of the present application may implement the functions of the network device in the embodiment shown in fig. 8, and the operations and/or functions of the respective modules in the communication apparatus 1700 or the communication apparatus 1800 are respectively for implementing the corresponding flows in the embodiment shown in fig. 8, and are not described herein again for brevity.

The embodiment of the application also provides a communication device, and the communication device can be terminal equipment or a circuit. The communication device may be configured to perform the actions performed by the terminal device in the above-described method embodiments.

When the communication apparatus is a terminal device, fig. 19 shows a schematic structural diagram of a simplified terminal device. For easy understanding and illustration, in fig. 19, the terminal device is exemplified by a mobile phone. As shown in fig. 19, the terminal device includes a processor, a memory, a radio frequency circuit, an antenna, and an input-output device. The processor is mainly used for processing communication protocols and communication data, controlling the terminal equipment, executing software programs, processing data of the software programs and the like. The memory is used primarily for storing software programs and data. The radio frequency circuit is mainly used for converting baseband signals and radio frequency signals and processing the radio frequency signals. The antenna 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 used primarily for receiving data input by a user and for outputting data to the user. It should be noted that some kinds of terminal devices may not have input/output devices.

When data needs to be sent, the processor performs baseband processing on the data to be sent and outputs baseband signals to the radio frequency circuit, and the radio frequency circuit performs radio frequency processing on the baseband signals and sends the radio frequency signals to the outside in the form of electromagnetic waves through the antenna. When data is sent to the terminal equipment, the radio frequency circuit receives radio frequency signals through the antenna, converts the radio frequency signals into baseband signals and outputs the baseband signals to the processor, and the processor converts the baseband signals into the data and processes the data. For ease of illustration, only one memory and processor are shown in FIG. 19. In an actual end device product, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or a storage device, etc. The memory may be provided independently of the processor, or may be integrated with the processor, which is not limited in this embodiment.

In the embodiment of the present application, the antenna and the radio frequency circuit having the transceiving function may be regarded as a transceiving unit of the terminal device, and the processor having the processing function may be regarded as a processing unit of the terminal device. As shown in fig. 19, the terminal device includes a transceiving unit 1910 and a processing unit 1920. A transceiver unit may also be referred to as a transceiver, a transceiving device, etc. A processing unit may also be referred to as a processor, a processing board, a processing module, a processing device, or the like. Optionally, a device used for implementing the receiving function in the transceiving unit 1910 may be regarded as a receiving unit, and a device used for implementing the sending function in the transceiving unit 1910 may be regarded as a sending unit, that is, the transceiving unit 1910 includes a receiving unit and a sending unit. A transceiver unit may also sometimes be referred to as a transceiver, transceiving circuitry, or the like. A receiving unit may also be referred to as a receiver, a receiving circuit, or the like. A transmitting unit may also sometimes be referred to as a transmitter, or a transmitting circuit, etc.

It should be understood that the transceiving unit 1910 is configured to perform the transmitting operation and the receiving operation on the terminal device side in the above method embodiments, and the processing unit 1920 is configured to perform other operations besides the transceiving operation on the terminal device in the above method embodiments.

For example, in one implementation, the transceiving unit 1910 is configured to perform all transmit and receive operations of the terminal device in the embodiment shown in fig. 4, e.g., S41 and S45, and/or the transceiving unit 1910 is further configured to perform other processes in support of the techniques described herein. The processing unit 1920 is configured to perform all operations performed by the terminal device in the embodiment shown in fig. 4, except transceiving operations, such as S42-S44, and/or the processing unit 1920 is further configured to perform other processes in support of the techniques described herein.

For another example, in another implementation, the transceiving unit 1910 is configured to perform all transmitting operations and receiving operations of the terminal device in the embodiment shown in fig. 5, for example, S52, and/or the transceiving unit 1910 is further configured to perform other processes supporting the techniques described herein. The processing unit 1920 is configured to perform all operations performed by the terminal device in the embodiment shown in fig. 5, except transceiving operations, such as S51 and S53, and/or the processing unit 1920 is further configured to perform other processes in support of the techniques described herein.

For another example, in yet another implementation, the transceiving unit 1910 is configured to perform all transmitting and receiving operations of the terminal device in the embodiment shown in fig. 7, e.g., S72 and S74, and/or the transceiving unit 1910 is further configured to perform other processes in support of the techniques described herein. The processing unit 1920 is configured to perform all operations performed by the terminal device in the embodiment shown in fig. 7, except transceiving operations, such as S71 and S73, and/or the processing unit 1920 is further configured to perform other processes in support of the techniques described herein.

For another example, in yet another implementation, the transceiving unit 1910 is configured to perform all transmitting and receiving operations of the terminal device in the embodiment shown in fig. 8, such as S82, S83, S84 and S86, and/or the transceiving unit 1910 is further configured to perform other processes supporting the techniques described herein. The processing unit 1920 is configured to perform all operations performed by the terminal device in the embodiment shown in fig. 8 except transceiving operations, for example, S87 and S88, and/or the processing unit 1920 is further configured to perform other processes in support of the techniques described herein.

When the communication device is a chip-like device or circuit, the device may comprise a transceiver unit and a processing unit. The transceiver unit may be an input/output circuit and/or a communication interface; the processing unit is an integrated processor or microprocessor or integrated circuit.

When the communication device in this embodiment is a terminal device, reference may be made to the device shown in fig. 20. As an example, the device may perform functions similar to processor 910 of FIG. 9. Or, as an example, the device may perform functions similar to processor 1110 in fig. 11. Or, as an example, the device may perform functions similar to processor 1310 in fig. 13. Or, as an example, the device may perform functions similar to processor 1510 of fig. 15. In fig. 20, the apparatus includes a processor 2010, a transmit data processor 2020, and a receive data processor 2030. The processing module 910 in the above embodiments may be the processor 2010 in fig. 20, and performs the corresponding functions; the transceiver 920 in the above embodiments may be the transmit data processor 2020 and/or the receive data processor 2030 in fig. 20. Alternatively, the processing module 1110 in the above embodiments may be the processor 2010 in fig. 20, and perform the corresponding functions; the transceiver 1120 in the above embodiments may be the transmit data processor 2020 and/or the receive data processor 2030 in fig. 20. Alternatively, the processing module 1310 in the above embodiment may be the processor 2010 in fig. 20, and performs the corresponding functions; the transceiver 1320 in the above embodiments may be the transmit data processor 2020 and/or the receive data processor 2030 in fig. 20. Alternatively, the processing module 1510 in the above embodiments may be the processor 2010 in fig. 20, and perform the corresponding functions; the transceiver module 1520 in the above embodiments may be the transmit data processor 2020, and/or the receive data processor 2030 in fig. 20. Although fig. 20 shows a channel encoder and a channel decoder, it is understood that these blocks are not limitative and only illustrative to the present embodiment.

Fig. 21 shows another form of the present embodiment. The processing device 2100 includes modules such as a modulation subsystem, a central processing subsystem, and peripheral subsystems. The communication device in this embodiment may serve as a modulation subsystem therein. In particular, the modulation subsystem may include a processor 2103, an interface 2104. The processor 2103 performs the functions of the processing module 910, and the interface 2104 performs the functions of the transceiver module 920. Alternatively, the processor 2103 performs the functions of the processing module 1110, and the interface 2104 performs the functions of the transceiver module 1120. Alternatively, the processor 2103 performs the functions of the processing module 1310, and the interface 2104 performs the functions of the transceiver module 1320. Alternatively, the processor 2103 performs the functions of the processing module 1510, and the interface 2104 performs the functions of the transceiver module 1520. As another variation, the modulation subsystem includes a memory 2106, a processor 2103 and a program stored in the memory 2106 and executable on the processor, and the processor 2103 executes the program to implement the method of the terminal device side in the above method embodiment. It should be noted that the memory 2106 may be non-volatile or volatile, and may be located within the modulation subsystem or within the processing device 2100, as long as the memory 2106 is coupled to the processor 2103.

When the device in the embodiment of the present application is a network device, the device may be as shown in fig. 22. The apparatus 2200 includes one or more radio frequency units, such as a Remote Radio Unit (RRU) 2210 and one or more baseband units (BBUs) (also referred to as digital units, DUs) 2220. The RRU 2210 may be referred to as a transceiver module, corresponding to the transceiver module 1710 in fig. 17, and optionally may also be referred to as a transceiver, transceiver circuit, or transceiver, etc., which may include at least one antenna 2211 and a radio frequency unit 2212. The RRU 2210 is mainly used for transceiving radio frequency signals and converting the radio frequency signals into baseband signals, for example, for sending indication information to a terminal device. The BBU 2210 is mainly used for performing baseband processing, controlling a base station, and the like. The RRU 2210 and BBU 2220 may be physically disposed together or may be physically disposed separately, i.e., distributed base stations.

The BBU 2220 is a control center of the base station, and may also be referred to as a processing module, and may correspond to the processing module 1720 in fig. 17, and is mainly used to complete baseband processing functions, such as channel coding, multiplexing, modulation, and spreading. For example, the BBU (processing module) may be configured to control the base station to perform an operation procedure related to the network device in the foregoing method embodiment, for example, to generate the foregoing indication information.

In an example, the BBU 2220 may be formed by one or more boards, where the boards may collectively support a radio access network of a single access system (e.g., an LTE network), and may also respectively support radio access networks of different access systems (e.g., an LTE network, a 5G network, or other networks). The BBU 2220 also includes a memory 2221 and a processor 2222. The memory 2221 is used to store necessary instructions and data. The processor 2222 is configured to control the base station to perform necessary actions, for example, to control the base station to execute the operation flow related to the network device in the above method embodiment. The memory 2221 and the processor 2222 may serve one or more boards. That is, the memory and processor may be provided separately on each board. Multiple boards may share the same memory and processor. In addition, each single board can be provided with necessary circuits.

The embodiment of the application also provides a communication system. The communication system may comprise at least one terminal device according to the embodiment shown in fig. 8 and a network device according to the embodiment shown in fig. 8. The terminal device is, for example, communication apparatus 1500 in fig. 15 or communication apparatus 1600 in fig. 16, and the network device is, for example, communication apparatus 1700 in fig. 17 or communication apparatus 1800 in fig. 18. For example, the terminal device may be used to perform all of the operations performed by the terminal device in the embodiment shown in FIG. 8, such as S82-S84, and S86-S88 in the embodiment shown in FIG. 8, and/or other processes for supporting the techniques described herein. The network device may be used to perform all of the operations performed by the network device in the embodiment shown in FIG. 8, such as S81-S86 in the embodiment shown in FIG. 8, and/or other processes for supporting the techniques described herein.

An embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a computer, the computer may implement the process related to the terminal device in the embodiment shown in fig. 4 and provided by the foregoing method embodiment.

An embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a computer, the computer may implement the process related to the terminal device in the embodiment shown in fig. 5 provided in the foregoing method embodiment.

An embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a computer, the computer may implement the process related to the terminal device in the embodiment shown in fig. 7 and provided by the foregoing method embodiment.

An embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a computer, the computer may implement the process related to the terminal device in the embodiment shown in fig. 8 and provided by the foregoing method embodiment.

An embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a computer, the computer may implement the process related to the network device in the embodiment shown in fig. 8 and provided by the foregoing method embodiment.

An embodiment of the present application further provides a computer program product storing a computer program, where when the computer program is executed by a computer, the computer may execute the method of the terminal device in the method embodiment shown in fig. 4.

An embodiment of the present application further provides a computer program product storing a computer program, where when the computer program is executed by a computer, the computer may execute the method of the terminal device in the method embodiment shown in fig. 5.

An embodiment of the present application further provides a computer program product storing a computer program, where when the computer program is executed by a computer, the computer may execute the method of the terminal device in the method embodiment shown in fig. 7.

An embodiment of the present application further provides a computer program product storing a computer program, where when the computer program is executed by a computer, the computer may execute the method of the terminal device in the method embodiment shown in fig. 8.

An embodiment of the present application further provides a computer program product storing a computer program, where when the computer program is executed by a computer, the computer may execute the method of the network device in the method embodiment shown in fig. 8.

It should be understood that the processor mentioned in the embodiments of the present application may be a CPU, and may also be other general purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It will also be appreciated that the memory referred to in the embodiments of the application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile 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. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM, enhanced SDRAM, SLDRAM, Synchronous Link DRAM (SLDRAM), and direct rambus RAM (DR RAM).

It should be noted that when the processor is a general-purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, the memory (memory module) is integrated in the processor.

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

It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations 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 implementation. 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 is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

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

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

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

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

Claims

A method of communication, comprising:

obtaining first information, where the first information includes one or more of a second channel bandwidth or a set of bandwidths allowed to be configured by a control resource set 0 of a first cell, and the second channel bandwidth is a channel bandwidth obtained from common configuration information of the first cell;

determining not to access the first cell based on the bandwidth of the initial BWP of the first cell and the first information.
The method of claim 1, wherein determining not to access the first cell based on the bandwidth of the initial BWP of the first cell and the first information comprises:

determining that the bandwidth of the initial BWP is not supported and the second channel bandwidth is not supported;

determining not to access the first cell.
The method of claim 2, wherein determining that the bandwidth of the initial BWP is not supported comprises:

determining that no channel bandwidth greater than or equal to the bandwidth of the initial BWP exists in the set of channel bandwidths supported by the terminal device.
The method of claim 2 or 3, wherein determining the bandwidth that does not support the initial BWP comprises:

Determining that the bandwidth of the initial BWP is different from any bandwidth included in a bandwidth set allowed to be configured by a control resource set 0 of the first cell.
The method of claim 2, wherein determining that the second channel bandwidth is not supported comprises:

and determining that no channel bandwidth smaller than or equal to the second channel bandwidth exists in the channel bandwidth set supported by the terminal equipment.
The method of claim 2 or 5, wherein determining that the second channel bandwidth is not supported comprises:

and determining that the second channel bandwidth does not meet the index parameter requirement of the radio frequency filter of the terminal equipment.
The method according to any one of claims 1 to 6, further comprising:

receiving indication information from the network device, where the indication information is used to indicate the terminal device to use one or any combination of the following as a judgment condition for accessing the first cell:

the bandwidth of the initial BWP of the first cell, the bandwidth of the second channel, or the bandwidth allowed to be configured by the control resource set 0 of the first cell.
A method of communication, comprising:

Obtaining first information, where the first information includes one or more of a first channel bandwidth, a second channel bandwidth, or a bandwidth set allowed to be configured by a control resource set 0 of a first cell, where the first channel bandwidth is an operating channel bandwidth that can be used by the terminal device in the first cell, and the second channel bandwidth is a channel bandwidth obtained from common configuration information of the first cell;

determining to access the first cell or determine a bandwidth supporting initial BWP based on the bandwidth of initial BWP of the first cell and the first information.
The method of claim 8, wherein determining to access the first cell based on the bandwidth of the initial BWP of the first cell and the first information comprises:

determining to support the initial BWP bandwidth and the first channel bandwidth, the terminal device determining to access the first cell; or the like, or, alternatively,

determining to support the initial BWP bandwidth and the second channel bandwidth, the terminal device determining to access the first cell; or the like, or, alternatively,

determining to support the initial BWP bandwidth, the first channel bandwidth, and the second channel bandwidth, the terminal device determining to access the first cell.
The method according to claim 8 or 9, wherein determining a bandwidth supporting the initial BWP comprises:

determining that a channel bandwidth greater than or equal to the bandwidth of the initial BWP exists in the set of channel bandwidths supported by the terminal device.
The method according to any of claims 8-10, wherein determining a bandwidth supporting initial BWP for the first cell comprises:

and determining that a channel bandwidth smaller than or equal to the second channel bandwidth exists in the channel bandwidth set supported by the terminal equipment.
The method according to any of claims 8-11, wherein determining a bandwidth supporting initial BWP for the first cell comprises:

and determining that the radio frequency index requirement corresponding to the second channel bandwidth can be met when the terminal equipment works on the second channel bandwidth.
The method according to any of claims 8-12, wherein determining a bandwidth supporting the initial BWP comprises:

determining that a bandwidth of the initial BWP is the same as at least one bandwidth included in a bandwidth set allowed to be configured by a control resource set 0 of the first cell.
The method of claim 8 or 9, wherein determining that the second channel bandwidth is supported comprises:

And determining that a channel bandwidth smaller than or equal to the second channel bandwidth exists in the channel bandwidth set supported by the terminal equipment.
The method of claim 8, 9 or 14, wherein determining that the second channel bandwidth is supported comprises:

and determining that the radio frequency index requirement corresponding to the second channel bandwidth can be met when the terminal equipment works on the second channel bandwidth.
The method of claim 9, wherein determining that the first channel bandwidth is supported comprises:

determining that a channel bandwidth equal to the first channel bandwidth exists in the set of channel bandwidths supported by the terminal device.
A communications apparatus, comprising:

a memory to store instructions;

a processor configured to execute the instructions stored in the memory, obtain first information, and determine not to access the first cell based on a bandwidth of an initial BWP of the first cell and the first information, wherein the first information includes one or more of a second channel bandwidth or a set of bandwidths allowed to be configured by a control resource set 0 of the first cell, and the second channel bandwidth is a channel bandwidth obtained from common configuration information of the first cell.
The communications apparatus of claim 17, wherein the processor is configured to determine not to access the first cell based on the bandwidth of the initial BWP of the first cell and the first information by:

determining that the bandwidth of the initial BWP is not supported and the second channel bandwidth is not supported;

determining not to access the first cell.
The communications apparatus of claim 18, wherein the processor is configured to determine the bandwidth that does not support the initial BWP by:

determining that there is no channel bandwidth greater than or equal to the bandwidth of the initial BWP in the set of channel bandwidths supported by the communication device.
The communications apparatus of claim 18 or 19, wherein the processor is configured to determine the bandwidth that does not support the initial BWP by:

determining that the bandwidth of the initial BWP is different from any bandwidth included in a bandwidth set allowed to be configured by a control resource set 0 of the first cell.
The communications apparatus of claim 19, wherein the processor is configured to determine that the second channel bandwidth is not supported by:

Determining that there is no channel bandwidth less than or equal to the second channel bandwidth in the set of channel bandwidths supported by the communication device.
The communications apparatus of claim 19 or 21, wherein the processor is configured to determine that the second channel band is not supported by:

determining that the second channel bandwidth does not meet specification parameter requirements of a radio frequency filter of the communication device.
The apparatus according to any one of claims 17 to 22, wherein the apparatus further comprises a transceiver configured to receive indication information from the network device, where the indication information is used to instruct the apparatus to use one or any combination of the following as the determination condition for accessing the first cell:

the bandwidth of the initial BWP of the first cell, the bandwidth of the second channel, or the bandwidth allowed to be configured by the control resource set 0 of the first cell.
A communications apparatus, comprising:

a memory to store instructions;

a processor configured to execute the instructions stored in the memory, obtain first information, and determine to access the first cell or determine to support a bandwidth of an initial BWP of the first cell based on the bandwidth of the initial BWP and the first information, where the first information includes one or more of a first channel bandwidth, a second channel bandwidth, or a set of bandwidths allowed to be configured by a control resource set 0 of the first cell, the first channel bandwidth is an operating channel bandwidth that can be used by the communication apparatus in the first cell, and the second channel bandwidth is a channel bandwidth obtained from common configuration information of the first cell.
The communications apparatus of claim 24, wherein the processor is configured to determine to access the first cell based on the bandwidth of the initial BWP of the first cell and the first information by:

determining to support the initial BWP bandwidth and the first channel bandwidth, and determining to access the first cell; or the like, or, alternatively,

determining to support the initial BWP bandwidth and the second channel bandwidth, and determining to access the first cell; or the like, or, alternatively,

determining to support the initial BWP bandwidth, the first channel bandwidth, and the second channel bandwidth, and determining to access the first cell.
The communications apparatus of claim 24 or 25, wherein the processor is configured to determine the bandwidth supporting the initial BWP by:

determining that there is a channel bandwidth greater than or equal to the bandwidth of the initial BWP in the set of channel bandwidths supported by the communication device.
A communications device according to any of claims 24 to 26, wherein the processor is configured to determine the bandwidth supporting the initial BWP for the first cell by:

determining that there is a channel bandwidth less than or equal to the second channel bandwidth in the set of channel bandwidths supported by the communication device.
A communications device according to any of claims 24 to 27, wherein the processor is configured to determine the bandwidth supporting the initial BWP for the first cell by:

and determining that the radio frequency index requirement corresponding to the second channel bandwidth can be met when the communication device works on the second channel bandwidth.
The communications apparatus of any of claims 24-28, wherein the processor is configured to determine the bandwidth supporting the initial BWP by:

determining that a bandwidth of the initial BWP is the same as at least one bandwidth included in a bandwidth set allowed to be configured by a control resource set 0 of the first cell.
The communications apparatus of claim 28 or 29, wherein the processor is configured to determine that the second channel bandwidth is supported by:

determining that there is a channel bandwidth less than or equal to the second channel bandwidth in the set of channel bandwidths supported by the communication device.
A communications device as claimed in claim 24, 25 or 30, wherein the processor is configured to determine that the second channel bandwidth is supported by:

and determining that the radio frequency index requirement corresponding to the second channel bandwidth can be met when the communication device works on the second channel bandwidth.
The communications apparatus of claim 31, wherein the processor is configured to determine that the first channel bandwidth is supported by:

determining that a channel bandwidth equal to the first channel bandwidth exists in a set of channel bandwidths supported by the communication device.
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 7, or causes the computer to perform the method of any one of claims 8 to 16.
A communication system, characterized in that it comprises a communication device according to any one of claims 17 to 32.