CN113785618B

CN113785618B - Communication method and device

Info

Publication number: CN113785618B
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: 2023-06-02
Anticipated expiration: 2039-08-15
Also published as: CN113785618A; CN116709449A; WO2021026929A1

Abstract

The application relates to a communication method and device. The terminal device receives the RRC message from the network device. The terminal device determines that the second channel bandwidth is not supported, wherein the second channel bandwidth is the channel bandwidth acquired from the public configuration information of the first cell, and 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. 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 work normally in the first cell, for example, the terminal equipment can be re-connected to other cells, so that the terminal equipment can be restored to the working state as soon as possible.

Description

Communication method and device

Technical Field

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

Background

Under the current communication system, terminal equipment needs to support at least one of the following three bandwidths to normally operate in a cell: the bandwidth of an initial bandwidth part (BWP) configured for the terminal device, the bandwidth indicated by 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 these three bandwidths, it may cause the terminal device to fail to operate properly in the cell.

However, at present, the terminal device has no judgment mechanism, that is, the terminal device accesses a cell without judging the bandwidth. Then, if the terminal device does not support these three bandwidths, the terminal device may not work properly under the cell, and there is no solution for this at present.

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 for the situation that the terminal equipment cannot work normally in a cell.

In a first aspect, there is provided a first communication method comprising: the terminal equipment receives the 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 capable of supporting the functions required by the communication apparatus to implement the method, such as a system on a chip. The first communication device is an exemplary terminal device. The terminal device is, for example, a terminal device, or a chip system provided in the terminal device for realizing the functions of the terminal device, or other components for realizing the functions of the terminal device.

In the embodiment of the present application, if the terminal device determines 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 work in the first cell, and make the terminal device access a cell capable of normal work as much as possible. Or if the terminal equipment has been accessed to the first cell, the terminal equipment can also choose not to continue to use the first cell, so that a solution is provided for the situation that the terminal equipment cannot work normally in the first cell, for example, the terminal equipment can be accessed to other cells again, and the terminal equipment can be enabled to recover the working 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, including 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 the first cell cannot reside;

the terminal equipment determines that the first cell access fails; or alternatively, the first and second heat exchangers may be,

The terminal device performs cell reselection.

There are a number of implementations for determining not to use the first cell. For example, the terminal device has accessed the first cell, the terminal device may determine that the first cell is not camping. Alternatively, the terminal device may determine that the first cell is not camping on if the terminal device has not yet accessed the first cell. Or, in order to make the terminal device access to the cell capable of normal operation as soon as possible, the terminal device may also perform cell reselection, etc. The embodiment of the application does not limit the specific operation of the terminal equipment.

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.

The first channel bandwidth is, for example, a dedicated channel bandwidth of the terminal device, e.g., a channel bandwidth configured by the network device for the terminal device, which is 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 switch to the first cell.

For example, the terminal device has accessed the first cell, and the RRC message may be an RRC connection reconfiguration message issued by the first cell, where the RRC connection reconfiguration message may configure the first channel bandwidth for the terminal device. The RRC connection reconfiguration message may be, for example, a first RRC connection reconfiguration message received by the terminal device after accessing the first cell through a random access procedure, or may be another RRC connection reconfiguration message received in addition to the first RRC connection reconfiguration message. Or the terminal device has not yet accessed the first cell, but 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 does not limit specific application scenes.

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 the second channel bandwidth, or the RRC message further indicating the second channel bandwidth.

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

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: 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 mode is simpler and is a basic comparison judgment mode.

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

The terminal device may determine to support the second channel bandwidth if at least one channel bandwidth of the set of channel bandwidths supported by the terminal device is less than or equal to the second channel bandwidth. This and the previous embodiments 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 is SIB1, for example, or may be other system information. The system information may configure an initial BWP for the terminal device, through which the terminal device may communicate in the first cell, e.g., 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 way of determination is relatively 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 is greater than or equal to the bandwidth of the initial BWP among a set of channel bandwidths supported by the terminal device.

This is a way of determining whether the bandwidth of the initial BWP is supported or not 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 is greater than or equal to the bandwidth of the initial BWP in the set of channel bandwidths supported by the terminal device, and otherwise, the terminal device may determine that the initial BWP is not supported if no channel bandwidth greater than or equal to the bandwidth of the initial BWP is present in the set of channel bandwidths supported by the terminal device. This way of determining whether to support the bandwidth of the initial BWP and the above way of determining whether to support the bandwidth of the initial BWP may be applied separately, e.g., the terminal device may determine whether to support the bandwidth of the initial BWP based on only one of them; or may be combined with an application, 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 that the bandwidth of the initial BWP is supported, and if one of the two conditions is not satisfied, the terminal device may determine that the bandwidth of the initial BWP is not supported.

With reference to the first aspect, in a possible implementation manner of the first aspect, the method further includes: the terminal device performs 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, e.g. the terminal device has not yet accessed the first cell, 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 in a first time period.

If the terminal device does not use the first cell, the terminal device may perform cell reselection. Because the first cell does not meet the requirements of the terminal equipment, if the terminal equipment reselects to the first cell again in the cell reselection process, the first cell may not meet the requirements of the terminal equipment, so if the terminal equipment reselects to the first cell again, the first cell may be an invalid selection, and the power consumption of the terminal equipment is increased. In the embodiment of the application, the terminal equipment can take the first cell as a punished cell, for example, the first cell is not set as a candidate cell in the cell reselection process in the first duration, so that the terminal equipment cannot reselect the first cell in the first duration, thereby reducing the invalid operation of the terminal equipment and reducing the power consumption of the terminal equipment. The first time period is, for example, set by the terminal device itself, or may be configured by the network device, or may be specified by a protocol or the like.

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

When determining whether to access the first cell, the terminal device uses which factors as judging conditions, and the judging conditions can be configured by the network device, or determined by the terminal device, or specified by a protocol, or can also adopt a default mode directly. The network device is used as an example, and the network device can instruct the terminal device which factors are used as the judging conditions for accessing the first cell, and the terminal device can operate according to the instruction of the network device. For example, the network device instructs the terminal device to use the first channel bandwidth as a judgment condition for accessing the first cell, so that the terminal device only needs to determine whether to use the first cell according to the first channel bandwidth, and does not need to judge other bandwidths such as the second channel bandwidth, thereby being beneficial to reducing the power consumption of the terminal device.

In a second aspect, there is provided a second communication method, the method comprising: the method comprises the steps that a terminal device obtains first information, wherein the first information comprises one or more of second channel bandwidth or bandwidth set allowed to be configured by a control resource set 0 of a first cell, and the second channel bandwidth is channel bandwidth 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 the functions required by the communication apparatus to implement the method, such as a chip system. The second communication device is an exemplary terminal device. The terminal device is, for example, a terminal device, or a chip system provided in the terminal device for realizing the functions of the terminal device, or other components for realizing the functions of the terminal device.

The embodiment of the application reduces the probability of the terminal equipment accessing the cell which cannot work, and enables the terminal equipment to access the cell which can work normally as much as possible. And for the cells which possibly cannot work normally, the terminal equipment can not be accessed, and the power consumption and the time consumed by the terminal equipment due to the access to the cells are reduced. In the embodiment of the application, the terminal equipment combines the first information and the initial BWP to perform comprehensive determination that the first cell is not accessed, so that the determination result is 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 a bandwidth of an 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 second channel bandwidth is not supported;

the terminal device 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 judge the second channel bandwidth; or, if the terminal device determines that the second channel bandwidth is not supported, the terminal device may not access the first cell, without determining the bandwidth of the initial BWP. Both of these two judging modes only need to judge one bandwidth, so that the method is simpler. Or the terminal equipment can restart not accessing the first cell under the condition of determining not supporting the bandwidth of the initial BWP and not supporting the bandwidth of the second channel, and the judging mode is more comprehensive, so that the judging result is 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 there is no channel bandwidth greater than or equal to the bandwidth of the initial BWP among the set of channel bandwidths supported by the terminal device.

This is one way for the terminal device to determine whether to support the bandwidth of the initial BWP. Conversely, if there is a channel bandwidth greater than or equal to the bandwidth of the initial BWP in the channel bandwidth set 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 an initial BWP of the first cell includes:

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

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

The method for determining whether the bandwidth of the initial BWP is supported or not through the radio frequency index requirement is a stricter determination mode because the terminal equipment needs to use the radio frequency filter to work, and the determination result is accurate because the method for determining whether the channel bandwidth is suitable through the radio frequency index requirement is a stricter determination mode.

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

This is another way for the terminal device to determine whether to support the bandwidth of the initial BWP. To further avoid incorrect cell access, the terminal device may determine not to access the first cell based on the relationship between the bandwidth of the initial BWP and the control resource set 0. If the bandwidth of the initial BWP is not the same as any bandwidth included in the set of bandwidths allowed to be configured by the control resource set 0, it may be determined that the bandwidth of the initial BWP is not supported, otherwise, if the bandwidth of the initial BWP is the same as at least one bandwidth included in the set of bandwidths allowed to be configured by the control resource set 0, 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 way of determining whether to support the bandwidth of the initial BWP and the above way of determining whether to support the bandwidth of the initial BWP may be applied alone or may be applied in combination, for example, even if the terminal device determines that there is a channel bandwidth greater than or equal to the bandwidth of the initial BWP 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: 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. Conversely, if there is a channel bandwidth less than or equal to the bandwidth of the initial BWP in the channel bandwidth set supported by the terminal device, the terminal device may determine to support the second channel bandwidth.

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: 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 equipment, the terminal equipment can be determined to 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 equipment, the terminal equipment can be determined to support the second channel bandwidth. This way is determined by the index parameters of the radio frequency filter, and the determined result is more accurate. This way of determining whether the second channel bandwidth is supported, and the above way of determining whether the second channel bandwidth is supported, may be applied alone or in combination, for example, even if the terminal device determines that 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 second channel bandwidth does not meet the index 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 a possible implementation manner of the second aspect, the method further includes:

the terminal equipment receives indication information from the network equipment, wherein the indication information is used for indicating the terminal equipment to take one or any combination of the following as a judging 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 uses which factors as judging conditions, and the judging conditions can be configured by the network device, or determined by the terminal device, or specified by a protocol, or can also adopt a default mode directly. The network device is used as an example, and the network device can instruct the terminal device which factors are used as the judging conditions for accessing the first cell, and the terminal device can operate according to the instruction of the network device. For example, the network device instructs the terminal device to use the second channel bandwidth as a judgment condition for accessing the first cell, so that 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 initial BWP bandwidth, thereby being beneficial to reducing the power consumption of the terminal device.

the terminal device enters an idle state or a non-activated state, or the terminal device performs cell reselection.

If the terminal equipment does not access the first cell, the terminal equipment can enter an idle state or an inactive state, or the terminal equipment can also perform cell reselection and the like 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 accessing unsuitable cells as far as possible, normal operation of the terminal equipment in the suitable cells is ensured as far as possible, and user experience is 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 in a first time period.

In a third aspect, a third communication method 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 a working 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 determines to support a bandwidth of the 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 the functions required by the communication apparatus to implement the method, such as a chip system. The third communication device is an exemplary terminal device. The terminal device is, for example, a terminal device, or a chip system provided in the terminal device for realizing the functions of the terminal device, or other components for realizing 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 is accessed into the first cell again, the probability of accessing the terminal equipment into the cell which cannot work is reduced, and the terminal equipment is accessed into the cell which can normally work as far as possible. And for the cells which possibly cannot work normally, the terminal equipment can not be accessed, and the power consumption and the time consumed by the terminal equipment due to the access to the cells are reduced. In addition, in the embodiment of the application, the terminal equipment combines the first information and the initial BWP to perform comprehensive determination to access the first cell, so that the determination result is 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 a bandwidth of an initial BWP of the first cell and the first information includes:

the terminal equipment determines to support the initial BWP bandwidth and the first channel bandwidth, and the terminal equipment determines to access the first cell; or alternatively, the first and second heat exchangers may be,

the terminal equipment determines to support the initial BWP bandwidth and the second channel bandwidth, and the terminal equipment determines to access the first cell; or alternatively, the first and second heat exchangers may be,

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 needs to determine to be accessed into the first cell, can judge only two bandwidths, has less judging process and less judging information to be acquired, and is 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 unsuitable cells.

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 there is a channel bandwidth greater than or equal to a bandwidth of the initial BWP among a set of channel bandwidths 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 an initial BWP of the first cell includes:

the terminal equipment determines that the channel bandwidth which is smaller than or equal to the second channel bandwidth exists in the channel bandwidth set supported by the terminal equipment.

the terminal equipment determines that the terminal equipment works on the second channel bandwidth and can meet the radio frequency index requirement corresponding to 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 the set of bandwidths allowed to be configured by the 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, to support the second channel bandwidth includes: the terminal equipment determines that the channel bandwidth which is smaller than or equal to the second channel bandwidth exists in the channel bandwidth set supported by the terminal equipment.

With reference to the third aspect, in a possible implementation manner of the third aspect, the determining, by the terminal device, to support the second channel bandwidth includes: 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, to support the first channel bandwidth includes: the terminal equipment determines that the channel bandwidth which is smaller than or equal to the first 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 first channel bandwidth is supported. If there is a channel bandwidth less than or equal to the first channel bandwidth in the set of channel bandwidths supported by the terminal device, the terminal device may determine to support the first channel bandwidth, otherwise if there is no channel bandwidth less than or equal to the first channel bandwidth in the set of channel bandwidths supported by the terminal device, the terminal device may determine not to support the first channel bandwidth.

With reference to the third aspect, in a possible implementation manner of the third aspect, the determining, by the terminal device, to support the first channel bandwidth includes: 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. This way 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 alone or in combination, for example, even if the terminal device determines that there is a channel bandwidth less than or equal to the first channel bandwidth in the set of channel bandwidths supported by the terminal device, the first channel bandwidth does not meet the index 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 the various possible embodiments of the third aspect, reference may also be made to the description of the technical effects of the second aspect or the various possible embodiments of the second aspect.

In a fourth aspect, there is provided a fourth communication method, 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 configured for the terminal device and used in the first cell; the terminal equipment 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 equipment; 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 the functions required by the communication apparatus to implement the method, such as a chip system. Illustratively, the fourth communication device is a terminal device. The terminal device is, for example, a terminal device, or a chip system provided in the terminal device for realizing the functions of the terminal device, or other components for realizing the functions of the terminal device.

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

With reference to the fourth aspect, in a possible implementation manner of the fourth aspect,

the maximum value of the channel bandwidths included in the channel bandwidth set supported by the terminal equipment is smaller than or equal to the network carrier bandwidth or the second channel bandwidth; or alternatively, the first and second heat exchangers may be,

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

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

For example, the third channel bandwidth may be the maximum value of the channel bandwidths included in the set of channel bandwidths supported by the terminal device, or the third channel bandwidth may include one or more of the channel bandwidths included in the set of channel bandwidths supported by the terminal device, that is, the third channel bandwidth may be the maximum value of the channel bandwidths included in the set of channel bandwidths supported by the terminal device, or may not be the maximum value of the 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, so that the terminal device can work 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 smaller than or equal to and closest to a network carrier bandwidth or a second channel bandwidth.

This is one implementation of the third channel bandwidth. For example, the third channel bandwidth may be the maximum value of the channel bandwidths included in the set of channel bandwidths supported by the terminal device, or the third channel bandwidth may include one or more of the channel bandwidths included in the set of channel bandwidths supported by the terminal device, that is, the third channel bandwidth may be the maximum value of the channel bandwidths included in the set of channel bandwidths supported by the terminal device, or may not be the maximum value of the 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, where 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 a maximum value in at least one bandwidth in a set of bandwidths allowed to be configured by the 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 (i),

representing the number of RBs corresponding to any one bandwidth in the bandwidth set allowed to be configured by the control resource set 0, orThe number of RBs corresponding to the maximum bandwidth included in the bandwidth set allowed to be configured by the control resource set 0 (or, the number of RBs corresponding to the maximum bandwidth in the bandwidth set allowed to be configured by the control resource set 0) is represented. />

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 included in 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 among 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 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 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 that 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 the minimum value of the channel bandwidth supported by the terminal device, or the fifth channel bandwidth may be the channel bandwidth supported by the terminal device that is greater than or equal to and is closest to the 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 bandwidth supported by the terminal device, or may not be required to be less than or equal to the minimum value of the channel bandwidth supported by the terminal device, but only less than or equal to the channel bandwidth supported by the terminal device, greater than or equal to and most recently 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 is closest to one bandwidth, that is, it is not necessarily equal to the bandwidth, as long as the number of RBs corresponding to the fifth channel bandwidth is 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, the 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 common configuration information of the first cell.

For example, the number of the cells to be processed,

wherein (1)>

And the number of RBs corresponding to the minimum bandwidth supported by the terminal equipment is represented.

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 (i),

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 firstChannel bandwidth. The second channel bandwidth may be obtained from common configuration information of the first cell. It can be considered that the number of RBs corresponding to the bandwidth of the initial BWP is closest to, and is greater than or equal to, the number of RBs corresponding to any one of the bandwidth sets allowed to be configured by the control resource set 0, or the number of RBs corresponding to the bandwidth of the initial BWP is closest to, and is greater than or equal to, the number of RBs corresponding to the maximum bandwidth of the bandwidth sets allowed to be configured by the control resource set 0. Any one of the set of bandwidths allowed to be configured by the control resource set 0, for example, the minimum necessary supported bandwidth for the terminal device, that is, the minimum bandwidth supported by the terminal device +. >

Alternatively, the maximum bandwidth in the set of bandwidths allowed to be configured by the control resource set 0, for example, is the minimum necessary supported bandwidth for 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: the terminal equipment sends 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 equipment 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 equipment;

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 channel bandwidth set, or may be the maximum value of the channel bandwidths included in the channel bandwidth set. In this case, the terminal device determines that the first channel bandwidth is not supported, that is, it is determined that the first cell cannot operate normally. The terminal device may not use the first cell to avoid the terminal device from 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, including one or any combination of the following:

the terminal equipment enters an idle state or an inactive state; or alternatively, the first and second heat exchangers may be,

the terminal equipment determines that a first cell is inaccessible; or alternatively, the first and second heat exchangers may be,

the terminal equipment determines that the first cell cannot reside; or alternatively, the first and second heat exchangers may be,

the terminal equipment determines to stop executing data transmission in a first cell; or alternatively, the first and second heat exchangers may be,

the terminal equipment performs cell reselection; or alternatively, the first and second heat exchangers may be,

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

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

In a fifth aspect, there is provided a fifth communication method, 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 smaller than or equal to a third channel bandwidth included in a set of channel bandwidths supported by the terminal equipment; the network device sends an RRC message to the terminal device, where the RRC message is used to indicate 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 the functions required by the communication apparatus to implement the method, such as a chip system. The fifth communication means is, for example, a network device, or a chip system 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 smaller than or equal to and closest to a network carrier bandwidth or a second channel bandwidth.

With reference to the fifth aspect, in a possible implementation manner of the fifth aspect,

the maximum value of channel bandwidths included in the channel bandwidth set supported by the terminal equipment is smaller than or equal to the network carrier bandwidth; or alternatively, the first and second heat exchangers may be,

at least one channel bandwidth among the channel bandwidths included in the set of channel bandwidths supported by the terminal device is smaller than or equal to 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 method further includes:

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

the network device sends configuration information to the terminal device, the configuration information being used for configuring the initial BWP, the initial BWP being 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. It is possible that the network device has not yet obtained capability information of the terminal device at this time, 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 capability information of the terminal device is not obtained, the network device may configure the initial BWP for the terminal device, so that normal operation of the terminal device may be ensured.

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 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 a bandwidth of the initial BWP.

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

Regarding the technical effects of the fifth aspect or the various possible embodiments of the fifth aspect, reference may also be made to the description of the technical effects of the fourth aspect or the various possible embodiments of the fourth aspect.

In a sixth aspect, a communication apparatus is provided, for example, the communication apparatus being a communication device. The communication device is adapted to perform the method of the first aspect or any of the possible implementation manners of the first aspect. In particular, the communication device may comprise means for performing the method of the first aspect or any of the possible implementation manners of the first aspect, e.g. comprising a processing means and a transceiver means. The communication device is illustratively a terminal device as described above. Wherein, the liquid crystal display device comprises a liquid crystal display device,

the receiving and transmitting module is used for receiving the RRC message from the network equipment;

the processing module is used for determining 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 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 not campeable;

determining a first cell access failure; or alternatively, the first and second heat exchangers may be,

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 switch to the first cell.

With reference to the sixth aspect, in a possible implementation manner 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 alternatively, the first and second heat exchangers may be,

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:

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 is less than or equal to the second channel bandwidth in the set of channel bandwidths supported by the terminal device, and determine to support the second channel bandwidth.

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

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

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, in a first period, the first cell as a candidate cell in the cell reselection procedure.

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 instruct the terminal device to use the first channel bandwidth and/or the first channel bandwidth as a condition for determining to access the first cell.

Regarding the technical effects of the sixth aspect or the various possible embodiments of the sixth aspect, reference may be made to the description of the technical effects of the first aspect or the various possible embodiments of the first aspect.

In a seventh aspect, a communication apparatus is provided, for example, the communication apparatus being 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 performing the method of the second aspect or any of the possible embodiments of the second aspect, e.g. comprising a processing means. Optionally, a transceiver module may be further included. The communication device is illustratively a terminal device as described above. Wherein, the liquid crystal display device comprises a liquid crystal display device,

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, 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 not to access the first cell based on a bandwidth of an 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 a bandwidth of an initial BWP of the first cell and the first information by:

determining a bandwidth that does not support the initial BWP and does not support the second channel bandwidth;

and 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 a 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 among 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 a bandwidth that does not support the initial BWP by including:

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 works on the second channel bandwidth and cannot meet the radio frequency index requirement corresponding to the second channel bandwidth.

and determining that the bandwidth of the initial BWP is different from any bandwidth included in a bandwidth set allowed to be configured by the 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 a 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 instruct the terminal device to use one or any combination of the following as a judgment 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 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 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, in a first period, the first cell as a candidate cell in the cell reselection procedure.

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

In an eighth aspect, a communication apparatus is provided, for example, the communication apparatus being a communication device. The communication device is adapted to perform the method of the third aspect or any of the possible implementations of the third aspect. In particular, the communication device may comprise means for performing the method of the third aspect or any of the possible embodiments of the third aspect, e.g. comprising a processing means. Optionally, a transceiver module may be further included. The communication device is illustratively a terminal device as described above. Wherein, the liquid crystal display device comprises a liquid crystal display device,

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, where the first channel bandwidth is a working 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 a bandwidth of an 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 a bandwidth of an 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 alternatively, the first and second heat exchangers may be,

determining to support the initial BWP bandwidth and the second channel bandwidth, and determining to access the first cell; or alternatively, the first and second heat exchangers may be,

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 a bandwidth supporting the initial BWP by:

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

And determining that the channel bandwidth which is 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 works on the second channel bandwidth and can meet the radio frequency index requirement corresponding to the second channel bandwidth.

determining that the bandwidth of the initial BWP is the same as at least one bandwidth included in the set of bandwidths allowed to be configured by the 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 a channel bandwidth set supported by the terminal equipment.

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 works on the first channel bandwidth and can meet the radio frequency index requirement corresponding to the first channel bandwidth.

Regarding the technical effects brought about by the eighth aspect or the various possible embodiments of the eighth aspect, reference may be made to the description 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 being a communication device. The communication device is adapted to perform the method of the fourth aspect or any of the possible implementation manners of the fourth aspect. In particular, the communication device may comprise means for performing the method of the fourth aspect or any of the possible embodiments of the fourth aspect, e.g. comprising a processing means and a transceiver means. The communication device is illustratively a terminal device as described above. Wherein, the liquid crystal display device comprises a liquid crystal display device,

The transceiver module is configured to receive an RRC message from a network device in a first cell, where the RRC message is configured 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 a 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 smaller than or equal to and closest to a network carrier bandwidth or a second channel bandwidth.

With reference to the ninth aspect, in a possible implementation manner 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, where 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 of a set of bandwidths allowed to be configured by the control resource set 0 or greater than or equal to a maximum value of at least one bandwidth of the set of bandwidths allowed to be configured by the control resource set 0.

With reference to the ninth aspect, in a possible implementation manner of the ninth aspect, the 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 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 greater than a fourth channel bandwidth of channel bandwidths included in a set of channel bandwidths supported by the terminal device;

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 alternatively, the first and second heat exchangers may be,

determining that the first cell is inaccessible; or alternatively, the first and second heat exchangers may be,

determining that the first cell is not campeable; or alternatively, the first and second heat exchangers may be,

determining to stop performing data transmission in the first cell; or alternatively, the first and second heat exchangers may be,

performing cell reselection; or alternatively, the first and second heat exchangers may be,

and performing connection reestablishment 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, in a first period, the first cell as a candidate cell in the cell reselection procedure.

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

In a tenth aspect, a communication apparatus is provided, for example, the communication apparatus being a communication device. The communication device is adapted to perform the method of the fifth aspect or any of the possible implementation manners of the fifth aspect. In particular, the communication device may comprise means for performing the method of the fifth aspect or any of the possible embodiments of the fifth aspect, e.g. comprising a processing means and a transceiver means. Illustratively, the communication device is a network device as previously described. Wherein, the liquid crystal display device comprises a liquid crystal display device,

The receiving and transmitting 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 smaller than or equal to and closest to a network carrier bandwidth or a second channel bandwidth.

With reference to the tenth aspect, in one possible implementation manner 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 bandwidth set allowed to be configured by a 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 in the bandwidth set allowed to be configured by the control resource set 0 of the first cell or is greater than or equal to a maximum value in at least one bandwidth in the bandwidth set allowed to be configured by the control resource set 0;

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 one possible implementation manner of the tenth aspect, 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 common configuration information of the first cell.

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

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

In an eleventh aspect, a communication apparatus is provided. The communication device comprises a processor and a transceiver coupled to each other for implementing the method described in the above-mentioned first aspect or in various possible embodiments of the first aspect. Illustratively, the communication device is a communication apparatus. Or, illustratively, the communication means is a chip provided in the communication device. The communication device is an exemplary terminal device. Wherein the transceiver is realized, for example, by an antenna, a feeder line, a codec and the like in the communication device, or, if the communication means is a chip arranged 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 transceiver component in the communication device so as to realize the information transceiving through the radio frequency transceiver component. Wherein, the liquid crystal display device comprises a liquid crystal display device,

The transceiver is configured to receive 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 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 not campeable;

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 can be used by the terminal device 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 switch to the first cell.

With reference to the eleventh aspect, in a possible implementation manner 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 alternatively, the first and second heat exchangers may be,

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 is less than or equal to the second channel bandwidth in the set of channel bandwidths supported by the terminal device, and determine to support the second channel bandwidth.

the transceiver is 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 a bandwidth of the initial BWP.

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 that is greater than or equal to a bandwidth of the initial BWP.

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 in a first 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 condition for determining to access the first cell.

Regarding the technical effects brought about by the eleventh aspect or the various possible embodiments of the eleventh aspect, reference may be made to the description of 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, the processor and transceiver being coupled to each other for implementing the method described in the second aspect or various possible embodiments of the second aspect. Illustratively, the communication device is a communication apparatus. Or, illustratively, the communication means is a chip provided in the communication device. The communication device is an exemplary terminal device. Wherein the transceiver is realized, for example, by an antenna, a feeder line, a codec and the like in the communication device, or, if the communication means is a chip arranged 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 transceiver component in the communication device so as to realize the information transceiving through the radio frequency transceiver component. Wherein, the liquid crystal display device comprises a liquid crystal display device,

the processor 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, where 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 a bandwidth of an 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 a bandwidth of an initial BWP of the first cell and the first information by:

and 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 a 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 a bandwidth that does not support the initial BWP by including:

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 a possible implementation manner 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 condition for determining to access 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 procedure during a first time period.

Regarding the technical effects brought about by the twelfth aspect or the various possible embodiments of the twelfth aspect, reference may be made to the description of 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, the processor and the transceiver being coupled to each other for implementing the method described in the third aspect or various possible embodiments of the third aspect. Illustratively, the communication device is a communication apparatus. Or, illustratively, the communication means is a chip provided in the communication device. The communication device is an exemplary terminal device. Wherein the transceiver is realized, for example, by an antenna, a feeder line, a codec and the like in the communication device, or, if the communication means is a chip arranged 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 transceiver component in the communication device so as to realize the information transceiving through the radio frequency transceiver component. Wherein, the liquid crystal display device comprises a liquid crystal display device,

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, 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;

The processor is further configured to determine to access the first cell based on a bandwidth of an 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 a bandwidth of an 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 works on the first channel bandwidth and can meet the radio frequency index requirement corresponding to the first channel bandwidth.

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

In a fourteenth aspect, a communication device is provided. The communication device comprises a processor and a transceiver coupled to each other for implementing the method described in the fourth aspect or in various possible embodiments of the fourth aspect. Illustratively, the communication device is a communication apparatus. Or, illustratively, the communication means is a chip provided in the communication device. The communication device is an exemplary terminal device. Wherein the transceiver is realized, for example, by an antenna, a feeder line, a codec and the like in the communication device, or, if the communication means is a chip arranged 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 transceiver component in the communication device so as to realize the information transceiving through the radio frequency transceiver component. Wherein, the liquid crystal display device comprises a liquid crystal display device,

The transceiver is configured to receive, in a first cell, an RRC message from a network device, where the RRC message is configured to configure a first channel bandwidth for a terminal device, and the first channel bandwidth is a channel bandwidth configured for the terminal device to be 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 a 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 smaller than or equal to and closest to a network carrier bandwidth or a second channel bandwidth.

With reference to the fourteenth aspect, in a possible implementation manner 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, where 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 of a set of bandwidths allowed to be configured by the control resource set 0 or greater than or equal to a maximum value of at least one bandwidth of the 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, the 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 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 a 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:

and performing connection reestablishment 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 procedure in a first period.

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

In a fifteenth aspect, a communication device is provided. The communication device comprises a processor and a transceiver 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, illustratively, the communication means is a chip provided in the communication device. Illustratively, the communication device is a network device. Wherein the transceiver is realized, for example, by an antenna, a feeder line, a codec and the like in the communication device, or, if the communication means is a chip arranged 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 transceiver component in the communication device so as to realize the information transceiving through the radio frequency transceiver component. Wherein, the liquid crystal display device comprises a liquid crystal display device,

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 less than or equal to and closest to a network carrier bandwidth or a second channel bandwidth.

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

the processor 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 bandwidth set allowed to be configured by a 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 bandwidth set allowed to be configured by the control resource set 0 of the first cell or is greater than or equal to a maximum value of at least one bandwidth of the bandwidth sets allowed to be configured by the control 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 one possible implementation manner of the fifteenth aspect, 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 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.

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

In a sixteenth aspect, a communication device is provided. The communication device may perform the functions of the terminal device in the method design described above. The communication means is illustratively a chip provided in the communication device. The communication device is illustratively a terminal device. The communication device includes: a memory for storing computer executable program code; and a processor coupled to the memory. Wherein the program code stored in the memory comprises instructions which, when executed by the processor, cause the communication device to perform the method of the first aspect or any of the possible implementation manners 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 by means of an antenna, a feed line, a codec etc. in the communication means, or, if the communication means is a chip provided in the communication device, an input/output interface of the chip, for example an input/output pin etc.

A seventeenth aspect provides a communication device. The communication device may perform the functions of the terminal device in the method design described above. The communication means is illustratively a chip provided in the communication device. The communication device is illustratively a terminal device. The communication device includes: a memory for storing computer executable program code; and a processor coupled to the memory. Wherein the program code stored in the memory comprises instructions which, when executed by the processor, cause the communication device to perform the method of the second aspect or any of the possible embodiments of the second aspect.

In an eighteenth aspect, a communication device is provided. The communication device may perform the functions of the terminal device in the method design described above. The communication means is illustratively a chip provided in the communication device. The communication device is illustratively a terminal device. The communication device includes: a memory for storing computer executable program code; and a processor coupled to the memory. Wherein the program code stored in the memory comprises instructions which, when executed by the processor, cause the communication device to perform the method of the third aspect or any one of the possible implementations of the third aspect.

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

In a twentieth aspect, a communication device is provided. The communication device may perform the functions of the terminal device in the method design described above. The communication means is illustratively 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 to the memory. Wherein the program code stored in the memory comprises instructions which, when executed by the processor, cause the communication device to perform the method of the fifth aspect or any one of the possible implementation manners of the fifth aspect.

In a twenty-first aspect, there is provided a first communication system comprising the communication device of the ninth aspect, the communication device of the fourteenth aspect or the communication device of the nineteenth aspect, and comprising the communication device of the tenth aspect, the communication device of the fifteenth aspect or the communication device of the twentieth aspect.

In a twenty-second aspect, a computer storage medium is provided, the computer readable storage medium 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 implementation manners of the first aspect.

In a twenty-third aspect, a computer storage medium is provided 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 implementations of the second or first aspect above.

In a twenty-fourth aspect, a computer storage medium is provided 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 implementations of the third aspect or the third aspect.

In a twenty-fifth aspect, a computer storage medium is provided, the computer readable 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 implementation manners of the fourth aspect.

In a twenty-sixth aspect, a computer storage medium is provided, the computer readable storage medium storing a computer program, which when run on a computer, causes the computer to perform the method of the fifth aspect or any one of the possible implementation manners of the fifth aspect.

In a twenty-seventh aspect, there is provided a computer program product comprising instructions for storing a computer program for causing a computer to carry out the method of the first aspect or any one of the possible implementations of the first aspect when the computer program is run on the computer.

In a twenty-eighth aspect, there is provided a computer program product comprising instructions for storing a computer program for causing a computer to carry out the method as described in any one of the possible embodiments of the second or fourth aspects above, when the computer program is run on the computer.

In a twenty-ninth aspect, there is provided a computer program product comprising instructions for storing a computer program for causing a computer to carry out the method as described in any one of the possible implementations of the third aspect or the third aspect, when the computer program is run on the computer.

In a thirty-first aspect, there is provided a computer program product comprising instructions for storing a computer program for causing a computer to carry out the method of the fourth aspect or any one of the possible implementations thereof when the computer program is run on the computer.

In a thirty-first aspect, there is provided a computer program product comprising instructions for storing a computer program for causing a computer to carry out the method of the fifth aspect or any one of the possible implementations of the fifth aspect, when the computer program is run on the computer.

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

Drawings

Fig. 1 is a schematic diagram of BWP;

fig. 2 is a schematic diagram of configuring a BWP to a terminal device;

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

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

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

fig. 6 is a schematic diagram of determining whether to support initial BWP according to the protection bandwidth of the channel bandwidth of the cell in the embodiment of the present application;

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

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

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

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

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

FIG. 19 is a schematic block diagram of a communication device provided by 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 yet another schematic block diagram of a communication device provided in an embodiment of the present application;

fig. 22 is yet another 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 more apparent, the embodiments of the present application will be described in further detail with reference to the accompanying drawings.

In the following, some terms in the embodiments of the present application are explained for easy understanding by those skilled in the art.

1) Terminal devices, including devices that provide voice and/or data connectivity to a user, specifically, devices that provide voice to a user, or devices that provide data connectivity to a user, or devices that provide voice and data connectivity to a user. For example, may include a handheld device having wireless connectivity, or a processing device connected to a wireless modem. The terminal device may communicate with the core network via a radio access network (radio access network, RAN), exchange voice or data with the RAN, or interact voice and data with the RAN. The terminal device may include a User Equipment (UE), a wireless terminal device, a mobile terminal device, a device-to-device (D2D) terminal device, a vehicle-to-all (vehicle to everything, V2X) terminal device, a machine-to-machine/machine-type communication (M2M/MTC) terminal device, an internet of things (internet of things, ioT) terminal device, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile station), a remote station, an Access Point (AP), a remote terminal (remote terminal), an access terminal (access terminal), a user terminal (user terminal), a user agent (user agent), or a user equipment (user device), etc. For example, mobile telephones (or "cellular" telephones) computers with mobile terminal devices, portable, pocket, hand-held, computer-built mobile devices, and the like may be included. Such as personal communication services (personal communication service, PCS) phones, cordless phones, session initiation protocol (session initiation protocol, SIP) phones, wireless local loop (wireless local loop, WLL) stations, personal digital assistants (personal digital assistant, PDAs), and the like. But also limited devices such as devices with lower power consumption, or devices with limited memory capabilities, or devices with limited computing capabilities, etc. Examples include bar codes, radio frequency identification (radio frequency identification, RFID), sensors, global positioning systems (global positioning system, GPS), laser scanners, and other information sensing devices.

By way of example, and not limitation, in embodiments of the present application, the terminal device may also be a wearable device. The wearable device can also be called as a wearable intelligent device or an intelligent wearable device, and is a generic name for intelligently designing daily wear and developing wearable devices, such as glasses, gloves, watches, clothes, shoes, and the like, by applying wearable technology. The 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 can realize a powerful function through software support, data interaction and cloud interaction. The generalized wearable intelligent device includes full functionality, large size, and may not rely on the smart phone to implement complete or partial functionality, such as: smart watches or smart glasses, etc., and focus on only certain types of application functions, and need to be used in combination with other devices, such as smart phones, for example, various smart bracelets, smart helmets, smart jewelry, etc. for physical sign monitoring.

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

In the embodiment of the application, the terminal device may further include a relay (relay). Or it is understood that all that is capable of data communication with a base station can be seen as a terminal device.

2) A network device, for example comprising AN Access Network (AN) device, such as a base station (e.g. AN access point), may refer to a device in the access network that communicates over the air with a wireless terminal device through one or more cells, or a network device in a vehicle-to-infrastructure (V2X) technology, for example, is a Road Side Unit (RSU). The base station may be configured to inter-convert the received air frames with 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 V2X applications, which may exchange messages with other entities supporting V2X applications. The network device may also coordinate attribute management for the air interface. For example, the network device may include an evolved base station (NodeB or eNB or e-NodeB, evolutional Node B) in a long term evolution (long term evolution, LTE) system or long term evolution advanced (long term evolution-advanced, LTE-a) system, or may also include a next generation node B (next generation node B, gNB) in a fifth generation mobile communication technology (the 5th generation,5G) new air interface (NR) system (also simply referred to as an NR system) or may also include a Centralized Unit (CU) and a Distributed Unit (DU) in a Cloud access network (Cloud radio access network, cloud RAN) system, which embodiments of the present application are not limited.

3) The first channel bandwidth refers to a channel bandwidth configured for the terminal device to be used in one cell. For example, the first channel bandwidth may be configured by dedicated signaling, e.g., a radio resource control (radio resource control, RRC) message, e.g., an RRC connection reconfiguration message, or may be other RRC messages, or dedicated signaling may be other messages than RRC messages.

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

5) The terms "system" and "network" in embodiments of the present application may be used interchangeably. "at least one" means one or more, and "a plurality" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a alone, a and B together, and B alone, wherein a, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). 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 plural.

And, unless otherwise indicated, the terms "first," "second," and the like in the embodiments herein are used for distinguishing between multiple objects and are not used for limiting the size, order, timing, priority, importance, or the like of the multiple objects. For example, the first channel bandwidth and the second channel bandwidth are only for distinguishing between different channel bandwidths, and are not indicative of the difference in size, priority, importance, or the like of the two channel bandwidths.

The foregoing presents some concepts related to the embodiments of the present application, and the following presents technical features related to the embodiments of the present application.

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

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

Please refer to fig. 1, which is a schematic diagram of BWP. Fig. 1 includes a single carrier with a bandwidth of N physical resource blocks (physical resource block, PRBs). Of the N PRBs, PRB 1-PRB 6 constitute one BWP, e.g. called BWP1, with BWP1 allocated to terminal device 1; PRB 7-PRB 9 constitute one BWP, e.g. called BWP2, BWP2 being allocated to terminal device 2; PRB 10-PRB N constitute one BWP, e.g. called BWP3, BWP3 being also allocated to terminal device 2.

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

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

Reference may be made to fig. 2 for a BWP configuration, wherein the horizontal axis of fig. 2 represents the frequency domain. In fig. 2, the network device configures one BWP on one carrier to the terminal device, the bandwidth of the carrier and the bandwidth of the BWP are shown in fig. 2, and the bandwidth of the BWP is smaller than the bandwidth capability of the terminal device. Both the network device and the terminal device know the location of the frequency domain reference point in advance, for example, the location of PRB0 in fig. 2, the network device may configure an offset (offset) for the terminal device, where the offset refers to a difference between the frequency domain reference point and the configured minimum frequency point of BWP, for example, the offset refers to a difference between the number of PRB corresponding to the frequency domain reference point and the number of PRB where the configured minimum frequency point of BWP is located. And the network device may also 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, terminal equipment needs to support at least one of the following three bandwidths to normally operate 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 these three bandwidths, it may cause the terminal device to fail to operate properly in the cell.

In view of this, a technical solution of the embodiments of the present application is provided. In the embodiment of the present application, if the terminal device determines 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 work in the first cell, and make the terminal device access a cell capable of normal work as much as possible. Or if the terminal equipment has been accessed to the first cell, the terminal equipment can also choose not to continue to use the first cell, so that a solution is provided for the situation that the terminal equipment cannot work normally in the first cell, for example, the terminal equipment can be accessed to other cells again, and the terminal equipment can be enabled to recover the working state as soon as possible.

The technical solution provided in the embodiments of the present application may be applied to a fourth generation mobile communication technology (the 4th generation,4G) system, for example, an LTE system, or may be applied to a 5G system, for example, 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) scene, which may be an NR D2D scene, an LTE D2D scene, or the like, or may be applied to a V2X scene, an NR V2X scene, or an LTE V2X scene, or the like, or may also be applied to other scenes or other communication systems.

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

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 merely an example, and in practical applications, the network device may serve multiple 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, corresponds to an access network device in 5G in a 5G system, for example, a gNB, or is an access network device in a communication system that is evolved subsequently.

The technical scheme provided by the embodiment of the application is described below with reference to the accompanying drawings.

An 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, this method is taken as an example applied to the network architecture shown in fig. 3. In addition, the method may be performed by two communication devices, such as 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 a function required by the network device to implement the method, or may be a terminal device or a communication device capable of supporting a function required by the terminal device to implement the method, and of course, may also be other communication devices, such as a chip system. And 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, in the form of a device, or the two communication apparatuses may 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 chip system, and so on. Wherein the network device is, for example, a base station.

For ease of description, hereinafter, the method is performed by the terminal device and the network device, that is, the first communication apparatus is the terminal device and the second communication apparatus is the network device. Since the present embodiment is exemplified as applied to the network architecture shown in fig. 3, the terminal device described below can realize the functions of the terminal device in the network architecture shown in fig. 3, and the network device described below can realize the functions of the network device in the network architecture shown in fig. 3.

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

The RRC message is, for example, an RRC connection reconfiguration message, which is referred to herein as an RRC connection reconfiguration message that is not used to instruct 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 equipment determines that the second channel bandwidth is not supported. The second channel bandwidth is a channel bandwidth obtained from 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 further indicate the second channel bandwidth, e.g., the RRC message is a handover command, and the handover command may indicate the second channel bandwidth of the first cell, which is equivalent to that the source network device may indicate some information of the target cell, so that the terminal device may learn the information of the target cell before handover. Alternatively, referring to S45, the network device may also transmit system information to the terminal device, which receives the system information from the network device. The system information may be SIB1, for example, or may be other system information, where 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, the RRC message is an RRC connection reconfiguration message, and the terminal device may determine the second channel bandwidth through the system information. If the second channel bandwidth is determined by means of the network device sending the system information to the terminal device, S45 may occur before S41. 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 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 comprise the first channel bandwidth.

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

The first channel bandwidth may be a dedicated channel bandwidth (dedicated channel 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 that may be used in the first cell. Wherein, if the RRC message is an RRC connection reconfiguration message, the first cell may refer to a cell in which the terminal device currently resides, or if the RRC message is a handover command, the first cell may refer to a target cell in which the handover command indicates that the terminal device is handed over, in which case, for example, the cell in which the terminal device currently resides is the second cell.

For example, 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-perSCS-list) and an uplink channel bandwidth-per-subcarrier spacing-list (uplink channel BW-perSCS-list) in a serving cell configuration (serving cell config) field of the RRC connection reconfiguration message. For different subcarrier spacings, the network device may configure the first channel bandwidth for the terminal device accordingly. The first channel bandwidth may include an uplink channel bandwidth and a downlink 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 work in the first cell normally, and the terminal device may not perform S44, where the processing manner of the terminal device may be: the terminal device may continue to use the first cell if the RRC message is an RRC connection reconfiguration message, or may start to use the first cell (e.g., switch to the first cell) if the RRC message is a handover command.

Alternatively, if the RRC message configures the first channel bandwidth, the terminal device may determine whether the first channel bandwidth is supported, and whether the second channel bandwidth is supported. If it is determined that the first channel bandwidth is not supported nor the second channel bandwidth is 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, 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, which indicates that the terminal device can operate in the first cell, and then the processing manner of the terminal device may be: the terminal device may continue to use the first cell if the RRC message is an RRC connection reconfiguration message, or may start to use the first cell (e.g., switch to the first cell) if the RRC message is a handover command. For example, after the terminal device completes the random access of the first cell through the initial BWP, the RRC connection reconfiguration message issued by the network device may be received. If the terminal device determines that the configuration information of the first channel bandwidth exists in the RRC connection reconfiguration message, that is, includes the first channel bandwidth, and the terminal device determines to support the channel bandwidth (second channel bandwidth) of the carrier broadcasted in SIB1, or the terminal device determines not to support the channel bandwidth of the carrier broadcasted in SIB1, the terminal device may determine that the first cell may be used, for example, may continue to perform data transmission 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 (second channel bandwidth) of the carrier broadcasted in SIB1 is supported, the terminal device may determine that the first cell may be used, for example, may continue to perform data transmission 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 (second channel bandwidth) of the carrier broadcasted in 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 hereinafter, and if the second channel bandwidth is supported, it indicates that the terminal device can operate in the first cell, the terminal device may not need to perform S44, and the processing manner of the terminal device may be: the terminal device may continue to use the first cell if the RRC message is an RRC connection reconfiguration message, or may start to use the first cell (e.g., switch to the first cell) if the RRC message is a handover command. For example, after the terminal device completes the random access of the first cell through the initial BWP, the RRC connection reconfiguration message issued by the network device may be received. 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 (second channel bandwidth) of the carrier broadcasted in 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 (second channel bandwidth) of the carrier broadcasted in SIB1 is not supported, the terminal device may not use the first cell.

As to which factors the terminal device uses as the conditions for determining access to a cell, the terminal device may determine the factors by itself, or may be configured by the network device, or may be specified by a protocol, etc. Taking the case where the judgment condition is configured by the network device as an example. 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 condition for determining access to the first cell, if this is the case, and the RRC message configures the first channel bandwidth, the terminal device only needs to determine whether the first channel bandwidth is supported, and only needs to support the first channel bandwidth, it may be considered that the terminal device can normally operate in the first cell, S44 may not be executed, and if the first channel bandwidth is not supported, S44 may be executed, and no further determination need be made on other channel bandwidths (for example, the second channel bandwidth); or, the indication information indicates the terminal device to use the second channel bandwidth as a judging condition for accessing the first cell, if so, the terminal device only needs to judge whether the second channel bandwidth is supported, and can consider that the terminal device can normally work in the first cell as long as the second channel bandwidth is supported, S44 can not be executed, and if the first channel bandwidth is not supported, S44 can be 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 a judgment condition for accessing the first cell, and the terminal device needs to judge whether the first channel bandwidth and the second channel bandwidth are supported, and only in the case that the two channel bandwidths are supported, S44 may not be executed, and as long as one or both of the first channel bandwidth and the second channel bandwidth are not supported, the terminal device needs to execute S44.

In the embodiment of the present application, it relates to how the terminal device determines whether to support the second channel bandwidth, and if the RRC message configures the first channel bandwidth, how the terminal device determines whether to support the first channel bandwidth. The following will describe each.

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

As a first way for the terminal device to determine whether to support the first channel bandwidth, the terminal device may determine whether to support the first channel bandwidth 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 shipment. Or the set of channel bandwidths supported by the terminal device may also refer to a set of channel bandwidths subjected to testing, where the set of channel bandwidths subjected to testing refers to a set of channel bandwidths included in the set of channel bandwidths, and the channel bandwidths capable of being supported by the terminal device are determined through testing. 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 to support the first channel bandwidth. And if there is no channel bandwidth equal to the first channel bandwidth among the set of channel bandwidths 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 channel bandwidth set supported by the terminal device, the number of channel bandwidths equal to the first channel bandwidth included in the channel bandwidth set may be one or more.

Alternatively, as a second way for the terminal device to determine whether to support the first channel bandwidth, the terminal device may also determine whether to support the first channel bandwidth 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 radio frequency index requirement corresponding to the first channel bandwidth can be met when working on the first channel bandwidth, the terminal device determines to support the first channel bandwidth. If the terminal equipment determines that the first channel bandwidth does not meet the requirement of the index parameter of the radio frequency filter of the terminal equipment, or the terminal equipment determines that the radio frequency index requirement corresponding to the first channel bandwidth cannot be met when working on the first channel bandwidth, the terminal equipment determines that the first channel bandwidth is not supported. The index parameter of the radio frequency filter of the terminal device may be determined according to radio frequency index requirements specified by the 3GPP protocol. The terminal device determines that the radio frequency index requirement corresponding to the first channel bandwidth can be met when the terminal device works on the first channel bandwidth, which can be understood 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 performs data transmission on the first channel bandwidth.

The two ways of determining whether to support the first channel bandwidth as above may be used alone, i.e. the terminal device may use either way as above to determine whether to support the first channel bandwidth. Alternatively, the two modes may be combined, for example, the terminal device starts to support the first channel bandwidth when it is determined that the channel bandwidth equal to the first channel bandwidth exists in the channel bandwidth set supported by the terminal device, and it is determined 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 equal to the first channel bandwidth does not exist in the channel bandwidth set supported by the terminal device, 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 can be determined that the terminal device does not support the first channel bandwidth.

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

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

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

Alternatively, as a second way for the terminal device to determine whether to support the second channel bandwidth, the terminal device may also determine whether to support the second channel bandwidth 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 index parameter of the radio frequency filter of the terminal device, or the terminal device determines that the radio frequency index requirement corresponding to the second channel bandwidth can be met when working on the second channel bandwidth, the terminal device determines to support the second channel bandwidth. And if the terminal equipment determines that the second channel bandwidth does not meet the requirement of the index parameter of the radio frequency filter of the terminal equipment, or the terminal equipment determines that the radio frequency index requirement corresponding to the second channel bandwidth cannot be met when working on the second channel bandwidth, the terminal equipment determines that the second channel bandwidth is not supported. The index parameter of the radio frequency filter of the terminal device may be determined according to radio frequency index requirements 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, which 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 performs data transmission on the second channel bandwidth.

The two ways of determining whether to support the second channel bandwidth as above may be used alone, i.e. the terminal device may use either way as above to determine whether to support the second channel bandwidth. Or, the two modes can be combined, for example, the terminal equipment starts to support the second channel bandwidth under the condition that the channel bandwidth which is smaller than or equal to the second channel bandwidth exists in the channel bandwidth set supported by the terminal equipment and the second channel bandwidth meets the requirement of index parameters of a radio frequency filter of the terminal equipment; and if the terminal device determines that the channel bandwidth which is smaller than the second channel bandwidth does not exist in the channel bandwidth set supported by the terminal device, and the channel bandwidth which is equal to the second channel bandwidth does not exist, or determines that the second channel bandwidth does not meet the requirement of index parameters of a radio frequency filter of the terminal device, it can be determined that the terminal device does not support the second channel bandwidth.

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

In the foregoing, it is introduced that S41, S42 and S43 occur after the terminal device has established an RRC connection with the network device, and 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 once for the second channel bandwidth.

Alternatively, if the RRC message is an RRC connection reconfiguration message, the terminal device acquires the second channel bandwidth through system information. After acquiring the second channel bandwidth 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. And 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 also needs to determine whether the second channel bandwidth is supported, that is, perform the operation of S42. It can be seen that in case that 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, once at S42. For example, the terminal device determines whether the second channel bandwidth is supported before initiating the random access, which is a general determination procedure, may not be so accurate, and the terminal device determines whether the second channel bandwidth is supported in S42, which is a more accurate determination procedure. For example, the terminal device determines whether the second channel bandwidth is supported before initiating the random access, the first manner of determining whether the second channel bandwidth is supported by the terminal device described above may be employed, the terminal device determines whether the second channel bandwidth is supported by the terminal device in S42, and the second manner of determining whether the second channel bandwidth is supported by the terminal device described above may be employed. Of course, this is merely an example, and the specific manner of determining whether to support the second channel bandwidth 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 there is a channel bandwidth greater than or equal to the bandwidth of the initial BWP in the channel bandwidth set supported by the terminal device, the terminal device determines the bandwidth supporting the initial BWP; and if there is no channel bandwidth greater than the bandwidth of the initial BWP and no channel bandwidth equal to the bandwidth of the initial BWP among the channel bandwidth sets supported by the terminal device, the terminal device determines 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 channel bandwidth set supported by the terminal device, the number of channel bandwidths greater than or equal to the bandwidth of the initial BWP present in the channel bandwidth set may be one or more.

As an alternative embodiment, the terminal device may further determine whether the third channel bandwidth is greater than or equal to the bandwidth of the initial BWP, and 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 configured. If the third channel bandwidth is smaller than the bandwidth of the initial BWP, the terminal device may not operate normally 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 terminal device determines that the first channel bandwidth and the second channel bandwidth are supported before the random access, or 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 the bandwidth of the initial BWP before the random access. After the random access is performed, S41 as described above may be performed.

If the terminal device also determines whether the first channel bandwidth is greater than or equal to the bandwidth of the initial BWP, this determination needs to be made before the terminal device determines that S44 is not performed as described above. 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, even if the terminal device determines that S44 may not be performed through the aforementioned judgment process, it is necessary to continue to perform S44 in this case.

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

For example, the terminal device may 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 reside, the terminal equipment determines that the first cell fails to access, and the terminal equipment initiates an RRC connection reestablishment process in the first cell or performs cell reselection.

For example, the terminal device may enter an idle state and perform cell reselection; or the terminal equipment can 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 access fails; alternatively, the terminal device determines that the first cell is not camped on and enters an idle state, performs cell reselection, and so on. Wherein if the terminal device has accessed the first cell, e.g. 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 campable; alternatively, if the terminal device has not yet accessed the first cell, for example, the RRC message is a handover command, indicating that the terminal device has been handed over to the first cell, then the terminal device may determine that the first cell is not accessible, or determine that the first cell fails to access. Wherein if the terminal device determines that the first cell is not accessible, the terminal device may not switch to the first cell, e.g. the terminal device may initiate an RRC connection re-establishment procedure in the second cell to re-access the second cell (the second cell is the cell in which the terminal device is currently camping), or the terminal device may also enter an idle state or inactive state, etc.

If the terminal device is to perform cell reselection, then, as it may not be able to operate normally in the first cell according to the foregoing determination procedure, as an alternative embodiment, the terminal device may take the first cell as a punished cell, and does not select or reselect the first cell for a first period of time, for example, the terminal device does not set the first cell as a candidate cell in the cell reselection procedure for the first period of time, and does not reselect the first cell for the first period of time. 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 time period. By the method, the probability of accessing the terminal equipment into unsuitable cells can be reduced, and the terminal equipment is ensured to be accessed into the cells which can work normally as much as possible. The first time period is set by the terminal device itself, or may be configured by the network device, or may be specified by a protocol, or the like.

In the embodiment of the present application, if the terminal device determines 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 work in the first cell, and make the terminal device access a cell capable of normal work as much as possible. Or if the terminal equipment has been accessed to the first cell, the terminal equipment can also select to not reside in the first cell, for example, the terminal equipment can enter an idle state, etc., so that a solution is provided for the situation that the terminal equipment cannot normally work in the first cell, for example, the terminal equipment can also perform cell reselection, etc., and the terminal equipment can be enabled to recover the working state as soon as possible.

In the embodiment shown in fig. 4, the terminal device may determine whether it is able to operate normally in the first cell after accessing the first cell (e.g., the RRC message is an RRC connection reconfiguration message). The embodiment of the present application further provides a second communication method, in this embodiment, the terminal device may determine whether to be able to 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, if the terminal device determines that the terminal device cannot normally operate in the first cell, the terminal device may choose not to access the first cell, so as to reduce power consumed by the terminal device due to access to the first cell.

Referring to fig. 5, a flow chart of a second communication method is shown. In the following description, this method is taken as an example applied to the network architecture shown in fig. 3. In addition, the method may be performed by two communication devices, such as 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 a function required by the network device to implement the method, or may be a terminal device or a communication device capable of supporting a function required by the terminal device to implement the method, and of course, may also be other communication devices, such as a chip system. And 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, in the form of a device, or the two communication apparatuses may 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 chip system, and so on. Wherein the network device is, for example, a base station.

S51, the terminal equipment obtains first information, wherein 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 set of bandwidths allowed to be configured by the control resource set 0, or the first information includes the second channel bandwidth and a set of bandwidths allowed to be configured by the control resource set 0.

As an alternative, the first information may also comprise a set of channel bandwidths supported by the terminal device. For example, the first information includes one or any combination of the following: the second channel bandwidth, the channel bandwidth set supported by the terminal device, or the bandwidth set 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 the 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, a set of channel bandwidths supported by the terminal device, and a 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 transmits 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 is SIB1, for example, 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 also be indicated by a handover command. For example, the network device sends a handover command to the terminal device, and the terminal device receives a handover command from the network device, the handover command being used to instruct the terminal device to handover to the first cell. The handover command may indicate the second channel bandwidth, e.g. the handover command comprises the second channel bandwidth (or, alternatively, configuration information comprising 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 to the terminal device.

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

After obtaining the first information, the terminal device may determine whether to access the first cell according to the first information and the bandwidth of the initial BWP, and S53 mainly describes a case where the terminal device determines not to access the first cell. There are various ways of determining that the terminal device does not access the first cell based on the first information and the bandwidth of the initial BWP, and some examples are described below.

1. The first way of 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 manner, if the terminal device does not support the bandwidth of the initial BWP, it may be determined that the first cell is not accessed, and no further judgment is required for other bandwidths.

The terminal device may have different manners of determining whether to support the bandwidth of the initial BWP.

As a first 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 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 among the channel bandwidth sets 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 and no channel bandwidth equal to the bandwidth of the initial BWP among the channel bandwidth sets 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 channel bandwidth set supported by the terminal device, the number of channel bandwidths greater than or equal to the bandwidth of the initial BWP included in the channel bandwidth set may be one or more.

As a second way for the terminal device to determine whether to support the bandwidth of the initial BWP, the terminal device may determine that the set of bandwidths allowed by the control resource set 0 includes one or more bandwidths in the set of bandwidths allowed by the control resource set 0. That is, to further avoid incorrect cell access, the terminal device may determine not to access the first cell according to the relationship between the bandwidth of the initial BWP and the control resource set 0. If 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, that is, if there is no bandwidth identical to the bandwidth of the initial BWP among bandwidths included 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 is the same as at least one bandwidth included in the bandwidth set allowed to be configured by the control resource set 0, that is, one or more bandwidths exist among bandwidths included in the bandwidth set allowed to be configured by the control resource set 0, which are the same as the bandwidth of the initial BWP, the terminal device determines to support the initial BWP bandwidth. In this way, it is possible to strictly control that the bandwidth of the initial BWP should be configured according to the number of RBs corresponding to the control resource set 0. Wherein, the number of RBs corresponding to the bandwidth allowed to be configured by the control resource set 0 may have values of 24, 48, 96, i.e. the set of RB numbers allowed to be configured by the control resource set 0 is [24, 48, 96]. In addition, 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 in which the initial BWP is located.

As a third way for the terminal device to determine whether to support the bandwidth of the initial BWP, the terminal device may be determined by the guard bandwidth of the first cell. For example, the terminal device may determine whether Resource Blocks (RBs) of the initial BWP fall outside the edge or guard bandwidth of the first cell, determine not to support the bandwidth of the initial BWP if the RBs of the initial BWP fall outside the edge or guard bandwidth of the first cell, or determine to support the bandwidth of the initial BWP if the RBs of the initial BWP fall within the guard bandwidth of the first cell. For example, the terminal device may determine a configuration of a start RB of the initial BWP, and if the terminal device determines from the start RB that the bandwidth of the radio frequency filter of the terminal device can fall within the range of the guard bandwidth of the first cell, the terminal device determines that the bandwidth of the initial BWP can be supported, 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 falls outside when operating on the initial BWP using the radio frequency 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 to support the bandwidth of the initial BWP, the terminal device may determine whether to support the bandwidth of the initial BWP 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 less than or equal to the second channel bandwidth in the channel bandwidth set supported by the terminal device, the terminal device may determine a bandwidth supporting the initial BWP. And if there is no channel bandwidth smaller than the second channel bandwidth or no channel bandwidth equal to the second channel bandwidth among the set of channel bandwidths supported by the terminal device, the terminal device may determine that the initial BWP is not supported. Wherein if there is a channel bandwidth less than or equal to the second channel bandwidth in the channel bandwidth set supported by the terminal device, the number of channel bandwidths less than or equal to the second channel bandwidth included in the channel bandwidth set 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 through the radio frequency index requirement corresponding to the second channel bandwidth. For example, the terminal device determines that the operation on the second channel bandwidth can meet the radio frequency index requirement corresponding to the second channel bandwidth, the terminal device determines that the bandwidth supporting the initial BWP, or if the terminal device determines that the operation on the second channel bandwidth cannot meet the radio frequency index requirement corresponding to the second channel bandwidth, the terminal device determines that the bandwidth supporting the initial BWP is not supported. In the process of using the initial BWP bandwidth, the terminal device should be able to meet the radio frequency index corresponding to the second channel bandwidth or the system bandwidth notified on SIB1, but this does not mean that the terminal device is able to support the size of the second channel bandwidth or the size of the system bandwidth issued by SIB 1. That is to say, supporting a channel bandwidth is considered from the aspect of the size of the supported channel bandwidth, and is considered from the aspect of meeting the requirement of the radio frequency index.

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 less than or equal to the second channel bandwidth in the channel bandwidth set supported by the terminal device, the terminal device may determine a bandwidth supporting the initial BWP. And if there is no channel bandwidth smaller than the second channel bandwidth or no channel bandwidth equal to the second channel bandwidth among the set of channel bandwidths supported by the terminal device, the terminal device may determine that the initial BWP is not supported. Wherein if there is a channel bandwidth less than or equal to the second channel bandwidth in the channel bandwidth set supported by the terminal device, the number of channel bandwidths less than or equal to the second channel bandwidth included in the channel bandwidth set may be one or more.

For example, please refer to fig. 6, which is a schematic diagram of determining whether to support the bandwidth of the initial BWP according to the guard bandwidth of the first cell by the terminal device. The 40MHz in fig. 6 represents the bandwidth of the radio frequency filter of the terminal device, and the dotted line represents the waveform of the radio frequency filter of the terminal device. 90MHz represents the guard bandwidth of the first cell and the other 20MHz represents the bandwidth of the initial BWP. It can be seen that the initial RB of the initial BWP falls within the range of the guard bandwidth of the first cell.

Please refer to table 1, which is an example of the guard bandwidth of the 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 represents undefined guard bandwidths.

The above three ways of determining whether to support the bandwidth of the initial BWP may be used alone, i.e., the terminal device may determine whether to support the bandwidth of the initial BWP using any one of the ways as described above. Alternatively, one or any of the above three manners may be used in combination, for example, the terminal device determines that the terminal device supports the bandwidth of the initial BWP only if it is determined that there is a channel bandwidth greater than or equal to the bandwidth of the initial BWP in the channel bandwidth set supported by the terminal device, and it is determined 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; 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. As another example, in general, the terminal device may determine only whether there is a channel bandwidth greater than or equal to the bandwidth of the initial BWP among the channel bandwidth sets supported by the terminal device. However, in the embodiment of the present application, the terminal device may further determine whether the RB of the initial BWP falls on the edge (or beyond) of the guard bandwidth of the channel bandwidth of the first cell when determining whether the channel bandwidth supported by the terminal device is necessarily operable on the channel bandwidth of the network, in addition to determining whether the 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 if so, the terminal device may determine that the bandwidth of the initial BWP is not supported even if the channel bandwidth greater than or equal to the bandwidth of the initial BWP exists in the channel bandwidth set supported by the terminal device.

Wherein the bandwidth of the initial BWP is not supported, and may also be described as not supporting the initial BWP.

2. The second way of determination.

For example, the terminal device determines that the second channel bandwidth is not supported, and 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 that the first cell is not accessed, and no further judgment is required for other bandwidths. As to the manner 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. A third way of determination.

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, and the terminal device determines that the first cell is not accessed. Reference may be made to the previous description as to how the terminal device determines whether to support the bandwidth of the initial BWP and how to determine whether to support the second channel bandwidth.

In this implementation, the terminal device determines not to access the first cell if neither the bandwidth for the initial BWP nor the second channel bandwidth is supported.

For example, the terminal device may first determine whether to support the bandwidth of the initial BWP, and then determine whether to support the second channel bandwidth if it is determined that the bandwidth of the initial BWP is not supported, and may determine not to access the first cell if it is determined that the second channel bandwidth is also 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 judging whether the second channel bandwidth is supported.

For example, the terminal device determines that the bandwidth of the initial BWP is inconsistent 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., a second channel bandwidth) among the channel bandwidths supported by the terminal device can support operation in the first cell, and the terminal device determines that the condition of not accessing the first cell is not satisfied. For example, the initial BWP has a bandwidth of 70MHz, the second channel bandwidth is 80MHz, the set of bandwidths allowed to be configured by the control resource set 0 includes one bandwidth, the bandwidth is 50MHz, and the terminal device supports the second channel bandwidth, and the terminal device determines that the condition of not accessing the first cell is not satisfied.

Alternatively, if the BW of the initial BWP neither belongs to the set of bandwidths allowed to be configured by the control resource set 0 nor is the channel bandwidth that the terminal device can support to cover, the terminal device may determine not to access the first cell, e.g. the terminal device decides the first cell as bar.

Alternatively, the terminal device may first determine whether the second channel bandwidth is supported, and then determine whether the bandwidth of the initial BWP is supported if it is determined that the second channel bandwidth is not supported, and may determine not to access the first cell if it is determined that the bandwidth of the initial BWP is also not supported. 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 of which mode the terminal device uses to determine not to access the first cell, or which factors the terminal device uses as the condition for determining not to access a cell, may be determined by the terminal device itself, or configured by the network device, or may be specified by a protocol, or may also use a default mode, 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, the terminal device may, for example, disable (barred) the first cell. Furthermore, the terminal device may enter an idle state or an inactive state, or the terminal device may perform cell reselection, etc., so as to implement normal operation as soon as possible.

In addition, if the terminal device is to perform cell reselection, since it is known from the foregoing determination process that the terminal device may not be able to operate normally in the first cell, as an alternative implementation manner, the terminal device may take the first cell as a punished cell, and does not reselect the first cell in the first duration, for example, the terminal device does not set the first cell as a candidate cell in the cell reselection process in the first duration, and does not reselect the first cell in the first duration. Alternatively, if the terminal device also receives a handover command from the network device, and the first cell is the target cell of the terminal device indicated by the 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 within the first time period. By the method, the probability of accessing the terminal equipment into unsuitable cells can be reduced, and the terminal equipment is ensured to be accessed into the cells which can work normally as much as possible. The first time period is set by the terminal device itself, or may be configured by the network device, or may be specified by a protocol, or the like.

The embodiment shown in fig. 5 describes the procedure in which the terminal device determines not to access the first cell. While the terminal device may have another case in which it determines that it is able to access the first cell, since there is a judgment procedure. Accordingly, embodiments of the present application provide a third communication method for introducing how a terminal device determines that a first cell can be accessed.

Referring to fig. 7, a flow chart of a third communication method is shown. In the following description, this method is taken as an example applied to the network architecture shown in fig. 3. In addition, the method may be performed by two communication devices, such as 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 a function required by the network device to implement the method, or may be a terminal device or a communication device capable of supporting a function required by the terminal device to implement the method, and of course, may also be other communication devices, such as a chip system. And 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, in the form of a device, or the two communication apparatuses may 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 chip system, and so on. Wherein the network device is, for example, a base station.

S71, the terminal equipment obtains first information, wherein the first information comprises one or any combination of the following items: the first channel bandwidth, 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 a first channel bandwidth; alternatively, the first information includes a second channel bandwidth; alternatively, the first information includes a set of bandwidths allowed to be configured by the control resource set 0; alternatively, the first information includes a first channel bandwidth and a set of bandwidths allowed to be configured by the control resource set 0; alternatively, the first information includes a first channel bandwidth, a second channel bandwidth, and a set of bandwidths allowed to be configured by the control resource set 0, and so on.

As an alternative, the first information may also comprise a set of channel bandwidths supported by the terminal device. For example, the first information includes one or any combination of the following: the first channel bandwidth, the 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 first channel bandwidth; or, the first information includes the second channel bandwidth and the bandwidth set allowed to be configured by the control resource set 0 of the first cell; alternatively, the first information includes a first channel bandwidth, a second channel bandwidth, a set of channel bandwidths supported by the terminal device, and a 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 transmits 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 is SIB1, for example, 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 equipment determines to access the first cell based on the bandwidth of the initial BWP of the first cell and the first information.

After obtaining the first information, the terminal device may determine whether to access the first cell according to the first information and the bandwidth of the initial BWP, and S73 mainly describes a case where the terminal device determines to access the first cell. There are various ways of determining that the terminal device determines to access the first cell based on the first information and the bandwidth of the initial BWP, and some examples are described below.

1. The first way of determination.

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

In this manner, if the terminal device supports the bandwidth of the initial BWP, it can determine to access the first cell without making any further decision.

The terminal device may have different manners of determining whether to support the bandwidth of the initial BWP. As to various ways in which the terminal device determines whether to support the bandwidth of the initial BWP, reference may be made to the description of the embodiment shown in fig. 5.

2. The second way of determination.

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

In this manner, if the terminal device supports the second channel bandwidth, it can be determined to access the first cell without making any further decisions. As to the manner 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. A third way of determination.

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

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

In this manner, if the terminal device supports the first channel bandwidth, it can determine to access the first cell without making any further decisions. As to 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.

4. And a fourth determination mode.

For example, the terminal device determines that the bandwidth supporting the initial BWP 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 to support the bandwidth of the initial BWP, reference may be made to the description of the embodiment shown in fig. 5. For the manner 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 specific case. If the terminal device determines whether to support the bandwidth of the initial BWP by the set of channel bandwidths supported by the terminal device and whether to support the second channel bandwidth by the set of channel bandwidths, it may be the case that the access to the first cell is determined as follows:

the 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. It is understood that there is a first subset of the channel bandwidths supported by the terminal device, where the first subset includes one or more channel bandwidths in the channel bandwidths set, and all the channel bandwidths included in the first subset are greater than or equal to the bandwidth of the initial BWP. In addition, 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 the channel bandwidths included in the second subset are smaller than or equal to the second channel bandwidth. The first subset and the second subset have an intersection, 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 to support the bandwidth of the initial BWP, and if it is determined that the bandwidth of the initial BWP is supported, then determine whether to support the second channel bandwidth, and if it is determined that the second 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 second channel bandwidth is supported.

Alternatively, the terminal device may first determine whether to support the second channel bandwidth, and then determine whether to support the bandwidth of the initial BWP if it is determined that the second channel bandwidth is supported, and may determine to access the first cell if it is determined that the bandwidth of the initial BWP is also supported. 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 supporting the initial BWP and the terminal device determines that the first channel bandwidth is supported, the terminal device determines to access the first cell. As to the manner in which the terminal device determines whether to support the bandwidth of the initial BWP, reference may be made to the description of the embodiment shown in fig. 5. For 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.

the 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 is equal to the first channel bandwidth. It is understood that there is a first subset of the channel bandwidths supported by the terminal device, where the first subset includes one or more channel bandwidths in the channel bandwidths set, and all the channel bandwidths included in the first subset are greater than or equal to the bandwidth of the initial BWP. 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 the channel bandwidths included in the third subset are equal to the first channel bandwidth. The third subset and the second subset have an intersection, 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 to support the bandwidth of the initial BWP, and if it is determined that the bandwidth of the initial BWP is supported, then determine whether to support the first channel bandwidth, 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 to support the first channel bandwidth, and then determine whether to support the bandwidth of the initial BWP if it is determined that the first channel bandwidth is supported, and may determine to access the first cell if it is determined that the bandwidth of the initial BWP 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 bandwidth of the initial BWP is supported.

6. And a sixth determination mode.

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, 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 or not and the manner in which the first channel bandwidth is supported or not, reference is made to the description of the embodiment shown in fig. 4.

Among these, there is a more specific case. If the terminal device determines whether to support the first channel bandwidth by the set of channel bandwidths supported by the terminal device and whether to support the second channel bandwidth by the set of channel bandwidths, then to determine to access the first cell, it may be the case that:

the third channel bandwidth in the set of channel bandwidths 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. It may be understood that there is also a second subset in the channel bandwidth set supported by the terminal device, where the second subset includes one or more channel bandwidths in the channel bandwidth set, and all channel bandwidths included in the second subset are smaller 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 the channel bandwidths included in the third subset are equal to the first channel bandwidth. The third subset and the second subset have an intersection, which is referred to as a third channel bandwidth, which may include one or more channel bandwidths.

In such an implementation, for example, the terminal device may first determine whether to support the second channel bandwidth, and if it determines to support the second channel bandwidth, then determine whether to support the first channel bandwidth, and if it determines to also support the first channel bandwidth, 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 first determine whether to support the first channel bandwidth, and then determine whether to support the second channel bandwidth if it is determined that the first channel bandwidth is supported, and may determine to access the first cell if it is determined that 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. A seventh determination mode.

For example, the terminal device determines a bandwidth supporting initial BWP, the terminal device determines a first channel bandwidth to be supported, and the terminal device determines a second channel bandwidth to be supported, and the terminal device determines to access the first cell. As to the manner in which the terminal device determines whether to support the bandwidth of the initial BWP, reference may be made to the description of the embodiment shown in fig. 5. The manner in which the terminal device determines whether to support the first channel bandwidth and the manner in which it determines whether to support the second channel bandwidth are both referred to the description of the embodiment shown in fig. 4.

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

the third channel bandwidth in 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. It is understood that there is a first subset of the channel bandwidths supported by the terminal device, where the first subset includes one or more channel bandwidths in the channel bandwidths set, and all the 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 equipment, the second subset comprises one or more channel bandwidths in the channel bandwidth set, and all the channel bandwidths included in the second subset are smaller 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 the channel bandwidths included in the third subset are equal to the first channel bandwidth. The first subset, the second subset, and the third subset have an intersection, which is referred to as a third channel bandwidth, which may include one or more channel bandwidths.

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

Or the judging sequence of the terminal equipment can also be that whether the bandwidth of the initial BWP is supported is determined firstly, whether the second channel bandwidth is supported is determined, and then whether the first channel bandwidth is supported is determined; or the judging sequence of the terminal equipment can also be that whether the second channel bandwidth is supported is determined firstly, then whether the bandwidth of the initial BWP is supported is determined, and then whether the first channel bandwidth is supported is determined; or the judging sequence of the terminal equipment can also be that whether the second channel bandwidth is supported is determined firstly, then whether the first channel bandwidth is supported is determined, and then whether the bandwidth of the initial BWP is supported is determined; or the judging sequence of the terminal equipment can also be that whether the first channel bandwidth is supported is determined firstly, then whether the second channel bandwidth is supported is determined, and then whether the bandwidth of the initial BWP is supported is determined; alternatively, the determining order of the terminal device may be to determine whether the first channel bandwidth is supported, then determine whether the initial BWP bandwidth is supported, and then determine whether the second channel bandwidth is supported. Whichever determination step is, the determination process may refer to the foregoing.

The determination of which mode the terminal device uses to access the first cell, or which factors the terminal device uses as the condition for accessing a cell, may be determined by the terminal device itself, or configured by the network device, or may be specified by a protocol, etc.

S74, the terminal device accesses the first cell or determines a bandwidth supporting 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 the initial BWP, or the terminal device may also be handed over to the first cell.

The first cell may be accessed if the terminal device determines a bandwidth supporting an 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 that the first cell is not accessed in a manner provided by the embodiment shown in fig. 5, but the first cell is not accessed in a manner provided by the embodiment shown in fig. 7, or the terminal device may determine that the first cell is not accessed in a manner provided by the embodiment shown in fig. 5, but the first cell is accessed in a manner provided by the embodiment shown in fig. 7. Alternatively, the embodiment shown in fig. 5 and the embodiment shown in fig. 7 may be applied in combination, for example, for a terminal device, the embodiment shown in fig. 5 may be used to determine that the first cell is not to be accessed, or the embodiment shown in fig. 7 may be used to determine that the first cell is to be accessed.

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

Referring to fig. 8, a flow chart of a fourth communication method is shown. In the following description, this method is taken as an example applied to the network architecture shown in fig. 3. In addition, the method may be performed by two communication devices, such as 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 a function required by the network device to implement the method, or may be a terminal device or a communication device capable of supporting a function required by the terminal device to implement the method, and of course, may also be other communication devices, such as a chip system. And 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, in the form of a device, or the two communication apparatuses may 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 chip system, and so on. Wherein the network device is, for example, a base station.

S81, before the terminal device initiates the random access, the network device may configure an initial BWP for the terminal device so that the terminal device can perform the random access on the initial BWP. At this time, the network device has not obtained 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 an initial BWP for the terminal device according to the estimated capability. For example, the network device may force the terminal device to support at least with

The bandwidth of the set of bandwidths 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 set of bandwidths allowed to be configured by the control resource set 0, and this bandwidth is the bandwidth that the terminal device must support at the 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 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 bandwidth set of the allowed configuration 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 of the network configuration 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 generally support bandwidths of at least 5MHz, 10MHz, and 20 MHz. For terminal devices operating at low frequencies (which may be referred to as FR1, for example, frequencies below 6 GHz), it may be assumed that the terminal devices must support bandwidths of 5MHz, 10MHz and 20 MHz. Thus, for a terminal device operating at a low frequency, for example with a subcarrier spacing of 15kHz, 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 when the network configures the initial BWP, thus corresponding to the 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 the low frequency according to table 2.

TABLE 2

In table 2, NRB indicates 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 an initial BWP with the number of RBs corresponding to the bandwidth of 25 for the terminal device.

Referring back to table 3, some examples of bandwidths that need to be met for a radio frequency filter of a terminal device operating at low frequencies.

TABLE 3 Table 3

The first column in table 3 refers to subcarrier spacing corresponding to a synchronization/physical broadcast channel block (SSB) and a physical downlink control channel (physical downlink control channel, PDCCH), the second column in table 3 refers to 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 bandwidth that a radio frequency filter of the terminal device needs to satisfy under the condition that the corresponding three previous 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 a high frequency (e.g., may be referred to as FR2, a frequency higher than 6 GHz) according to table 4.

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 100MHz.

Referring back to table 5, some examples of bandwidths that may be met for a radio frequency filter of a terminal device operating at high frequencies are shown.

TABLE 5

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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 of the bandwidth set allowed to be configured by the control resource set 0 and 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 satisfy: the bandwidth of the initial BWP is equal to or greater than control resource set 0A maximum value in at least one bandwidth in the set of configured bandwidths is allowed. For example, the number of the cells to be processed,

the number of RBs corresponding to any one bandwidth in the bandwidth set allowed to be configured by the control resource set 0 is represented, or the number of RBs corresponding to the maximum value of bandwidths included in the bandwidth set allowed to be configured by the control resource set 0 (or, the number of RBs corresponding to the maximum bandwidth in the bandwidth set allowed to be configured by the control resource set 0) is represented. / >

Indicating the number of RBs corresponding to the bandwidth of the initial BWP. Then (I)>

In addition, as an alternative, 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 first time period of the first time period,

As another alternative embodiment, the minimum value of the channel bandwidth 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 of the present invention,

indicating the number of RBs corresponding to the network carrier bandwidth. The network carrier bandwidth may be the same as the second channel bandwidth or may be different. For example, the network carrier bandwidth is, for example, a second channel bandwidth,or the network carrier bandwidth may be the first channel bandwidth, or the network carrier bandwidth may be a different bandwidth than 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 can be considered that the number of RBs corresponding to the bandwidth of the initial BWP is closest to, and is greater than or equal to, the number of RBs corresponding to any one of the bandwidth sets allowed to be configured by the control resource set 0, or the number of RBs corresponding to the bandwidth of the initial BWP is closest to, and is greater than or equal to, the number of RBs corresponding to the maximum bandwidth of the bandwidth sets allowed to be configured by the control resource set 0. Any one of the set of bandwidths allowed to be configured by the control resource set 0, for example, the minimum necessary supported bandwidth for the terminal device, that is, the minimum bandwidth supported by the terminal device +. >

Alternatively, the maximum bandwidth in the set of bandwidths allowed to be configured by the control resource set 0, for example, is 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 supports at least with + ->

The closest bandwidth, which is the bandwidth that the terminal device must support at a minimum, is comprised by the set of bandwidths that is greater than or equal to the configuration allowed by control resource set 0.

For example, the bandwidth of the initial BWP may be less than or equal to the minimum value of the channel bandwidth supported by the terminal device, i.e., less than or equal to the minimum channel bandwidth supported by the terminal device (alternatively referred to as the minimum bandwidth supported by the terminal device)

) Alternatively, the bandwidth of the initial BWP may be less than or equal to the fourth channel bandwidth included in the channel bandwidth set 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 bandwidths supported by the terminal device, and is greater than or equal to and closest to the channel bandwidths supported by the terminal device in the bandwidth set allowed to be configured by the control resource set 0. In addition, the fifth channel bandwidth may be less than or equal to the network carrier bandwidth or the second channel bandwidth.

S82, the network equipment sends configuration information to the terminal equipment, the terminal equipment receives the configuration information from the network equipment, and the configuration information can configure initial BWP for the terminal equipment. For example, the terminal device may perform a random access procedure in the first cell by means of the initial BWP, and it may also be understood that the terminal device may communicate with the network device in the first cell by means of the initial BWP.

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

S83, the terminal equipment performs random access in the first cell.

For example, the terminal device may perform random access through an initial BWP. In the embodiment of the present application, before the terminal device performs random access, it is not necessary to determine whether to support the bandwidth of the initial BWP, and in the random access stage, it is also not necessary to determine whether to support the second channel bandwidth. But may determine whether to continue using the first cell based on the first channel bandwidth configured by the network device after a subsequent access to the first cell.

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

For example, the terminal device may send capability information of the terminal device to the network device in a random access procedure, e.g. by a third message (Msg 3) in the random access procedure, or the terminal device may send capability information of the terminal device to the network device after accessing the first cell. The capability information of the terminal device may for example indicate a set of channel bandwidths supported by the terminal device, etc. The capability information of the terminal device may also indicate, for example

Etc.

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 only work normally.

The network device may have only an initial BWP that is an active BWP before obtaining capability information of the terminal device, and the initial BWP may include an initial upstream BWP and an 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 equipment configures a first channel bandwidth for the terminal equipment according to the capability information. The first channel bandwidth may be a dedicated channel bandwidth configured for the terminal device. As an understanding of the dedicated channel bandwidth, the dedicated channel bandwidth may include a channel bandwidth configured for the terminal device for 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

Representation, then->

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

Representation +.>

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

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

in this case, the +.>

In addition, except->

In addition to (I)>

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

Either standard bandwidth, i.e. the bandwidth defined in the standard, or nonstandard bandwidth, i.e. the bandwidth not defined in the standard.

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

May be a standard bandwidth; alternatively, if the terminal device is capable of supporting non-standard bandwidth, the network carrier bandwidth configured by the network device

Either standard or nonstandard bandwidth.

If the terminal device supports nonstandard bandwidth, one implementation manner is that the network device may not configure the second channel bandwidth through SIB1, and after obtaining the capability information of the terminal device, the network device configures UE dedicated channel BW one of the capabilities supported by the capability reporting of the terminal device according to the capability of the terminal device in the dedicated channel bandwidth (dedicated channel BW) of the terminal device.

Or if the terminal device supports the nonstandard bandwidth, one implementation manner is that the network device can configure the second channel bandwidth through SIB1, and after obtaining the capability information of the terminal device, the network device configures UE dedicated channel BW one of the capabilities supported by the capability reporting of the terminal device according to the capability of the terminal device at the dedicated channel bandwidth (dedicated channel BW) of the terminal device.

S86, the network equipment sends RRC message to the terminal equipment in the first cell, and the terminal equipment receives the RRC message from the network equipment 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 an understanding of the dedicated channel bandwidth, the dedicated channel bandwidth may include an operating channel bandwidth configured for the terminal device for use in the first cell.

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

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

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 included in the set of channel bandwidths supported by the terminal device. If the first channel bandwidth is less than or equal to the third channel bandwidth included in the channel bandwidth set supported by the terminal device, the terminal device determines to support the first channel bandwidth, 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 not to support the first channel bandwidth. The third channel bandwidth here is, for example, a channel bandwidth supported by the terminal device that is smaller than or equal to and closest to the network carrier bandwidth or the second channel bandwidth.

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

Alternatively, the third channel bandwidth may be the maximum value of the channel bandwidths included in the channel bandwidth set 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 channel bandwidth set 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 to support the first channel bandwidth, 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 not to support the first channel bandwidth.

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

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

if the condition is met, the terminal device may continue to use the first cell, and if the condition is not met, the terminal device may not use the first cell. Reference is made to the following description for a specific operation in which the terminal device does not use the first cell.

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

S87 and S88 are examples of the first channel bandwidth being less than or equal to the third channel bandwidth included in the channel bandwidth set supported by the terminal device, or the terminal device may also determine that the first channel bandwidth is greater than the fourth channel bandwidth included in the channel bandwidth set. The fourth channel bandwidth is, for example, any one or more channel bandwidths included in the channel bandwidth set, or may be the maximum value of the channel bandwidths included in the channel bandwidth set. 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 operations: the terminal equipment enters an idle state or a non-activated state, the terminal equipment determines that the first cell is inaccessible, the terminal equipment determines that the first cell is not resided, the terminal equipment determines to stop executing data transmission in the first cell, 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 enters an idle state and perform cell reselection, or the terminal device determines that the first cell access fails, or the terminal device determines that the first cell is not campable and enters an idle state and performs cell reselection, and so on. Wherein if the terminal device has accessed the first cell, e.g. the RRC message is an RRC reconfiguration message, the terminal device may determine that the first cell is not camping; alternatively, if the terminal device has not yet accessed the first cell, for example, the RRC message is a handover command, indicating that the terminal device has been handed over to the first cell, then the terminal device may determine that the first cell is not accessible, or determine that the first cell fails to access. Wherein if the terminal device determines that the first cell is not accessible, the terminal device may not switch to the first cell, e.g. the terminal device may initiate an RRC connection re-establishment procedure in the second cell to re-access the second cell (the second cell is the cell in which the terminal device is currently camping), or the terminal device may also enter an idle state or inactive state, etc.

If the terminal device is to perform cell reselection, then, as it may not be able to operate normally in the first cell according to the foregoing determination procedure, as an alternative implementation manner, the terminal device may take the first cell as a punished cell, and no further reselect the first cell in the first duration, for example, the terminal device does not set the first cell as a candidate cell in the cell reselection procedure in 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 time period. By the method, the probability of accessing the terminal equipment into unsuitable cells can be reduced, and the terminal equipment is ensured to be accessed into the cells which can work normally as much as possible. The first time period is set by the terminal device itself, or may be configured by the network device, or may be specified by a protocol, or the like.

As to which factors the terminal device uses as the conditions for determining a cell, the terminal device may determine the factors by itself, or may be configured by the network device, or may be specified by a protocol, or may use a default manner, or the like. The default way is to determine whether to use the first cell, e.g. using the first channel bandwidth. For example, in the embodiment of the present application, the network device may send indication information to the terminal device, where 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 condition for determining that the terminal device accesses the first cell.

The apparatus for implementing the above method in the embodiments of the present application is described below with reference to the accompanying drawings. Therefore, the above contents can be used in the following embodiments, and repeated contents are not repeated.

Fig. 9 is a schematic block diagram of a communication device 900 provided in an embodiment of the present application. The communication apparatus 900 is illustratively a communication device 900. Alternatively, the communication device 900 is, for example, a chip in a communication apparatus, a combined device or component having the functions of the terminal apparatus described above in a communication apparatus, or the like. Illustratively, the communication device 900 is a terminal device 900.

The terminal device 900 includes 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, may include an antenna, a radio frequency circuit, and the like, and the processing module 910 may be a processor, for example, a baseband processor, where one or more central processing units (central processing unit, CPU) may be included. 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, for example, 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.

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

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

a processing module 910 further configured to determine that the first channel bandwidth indicated by the RRC message is not supported or 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 alternative embodiment, the processing module 910 is configured to not use the first cell by any combination of one or more of the following:

entering an idle state or an inactive state;

determining that the first cell is inaccessible;

determining that the first cell is not campeable;

cell reselection is performed.

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

As an alternative embodiment, the RRC message is used to instruct the terminal device 900 to switch to the first cell.

As an alternative to this embodiment of the present invention,

a transceiver module 920, configured to receive system information from the network device, where the system information indicates the second channel bandwidth; or alternatively, the first and second heat exchangers may be,

The RRC message also indicates the second channel bandwidth.

As an alternative embodiment, the processing module 910 is configured to determine that the second channel bandwidth is not supported by the following method, including:

it is determined that there is no bandwidth less than or equal to the second channel bandwidth 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, in the set of channel bandwidths supported by the terminal device 900, at least one channel bandwidth is less than or equal to the second channel bandwidth, and determine to support the second channel bandwidth.

As an alternative to this embodiment of the present invention,

the transceiver module 920 is further configured to receive system information from the network device, where the system information indicates an initial BWP:

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

As an alternative embodiment, the system information further indicates an initial BWP, and 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 that is greater than or equal to the bandwidth of the initial BWP.

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

As an alternative embodiment, 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 during the 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 condition for determining to access the first cell.

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

As shown in fig. 10, the embodiment of the present application further provides a communication device 1000. The communication apparatus 1000 is exemplified by a communication device 1000. Alternatively, the communication device 1000 is, for example, a chip in a communication apparatus, a combined device or component having the functions of the terminal apparatus described above in a communication apparatus, or the like. The communication device is for example a terminal device, or may also be a chip system 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 executed, the processor 1010 is configured to perform the operations performed by the processing module 910 in the above embodiment, and the transceiver 1030 is configured to perform the operations performed by the transceiver module 920 in the above embodiment.

Wherein the transceiver 1030 may be a functional unit that can perform both transmitting and receiving operations, e.g., the transceiver 1030 may be configured to perform all of the transmitting and receiving operations performed by the terminal device in the embodiment shown in fig. 4, e.g., when transmitting is performed, the transceiver 1030 may be considered a transmitter and when receiving is performed, the transceiver 1030 may be considered a receiver; alternatively, the transceiver 1030 may be a generic term for two functional units, namely a transmitter and a receiver, respectively, the transmitter being 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 being 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 functions of the terminal device in the embodiment shown in fig. 4, and the operations and/or functions of the respective modules in the communication apparatus 900 or the communication apparatus 1000 are respectively for implementing the corresponding procedures in the embodiment shown in fig. 4, and are not described herein for brevity.

Fig. 11 is a schematic block diagram of a communication device 1100 provided by an embodiment of the present application. The communication apparatus 1100 is illustratively a communication device 1100. Alternatively, the communication device 1100 is, for example, a chip in a communication apparatus, a combined device or component having the functions of the terminal apparatus described above in a communication apparatus, or the like. Illustratively, the communication device 1100 is a terminal device 1100.

The 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, may include an antenna, a radio frequency circuit, and the like, and the processing module 1110 may be a processor, for example, a baseband processor, where one or more central processing units (central processing unit, CPU) may be included. When the terminal device 1100 is a component having the terminal function described above, the transceiver module 1120 may be a radio frequency unit, and the processing module 1110 may be a processor, for example, 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.

Wherein the processing module 1110 may be configured to perform all operations performed by the terminal device in the embodiment illustrated in fig. 5, except for transceiving operations, such as S51 and S53, and/or other procedures for supporting the techniques described herein. The transceiver module 1120 may be used to perform all of the transceiving operations performed by the terminal device in the embodiment illustrated 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 a transmitting operation and a 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, the transceiver module 1120 may be considered to be a transmitting module when performing a transmitting operation and the transceiver module 1120 may be considered to be a receiving module when performing a receiving operation; alternatively, the transceiver module 1120 may be a generic term of two functional modules, which are a transmitting module and a receiving module, respectively, where the transmitting module is used to perform a transmitting operation, for example, the transmitting module may be used to perform all transmitting operations performed by the terminal device in the embodiment shown in fig. 5, and the receiving module is used to perform receiving operations, for example, the receiving module may be used to perform all receiving operations performed by the terminal device in the embodiment shown in fig. 5.

For example, a processing module 1110 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, where 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 a bandwidth of an initial BWP of the first cell and the first information.

As an alternative 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:

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

As an alternative embodiment, 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 less than or equal to the second channel bandwidth among the set of channel bandwidths supported by the terminal device 1100.

it is determined that the second channel bandwidth does not meet the index parameter requirements of the radio frequency filter of the terminal device 1100.

As an alternative to this embodiment of the present invention,

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 judgment condition for accessing the first cell:

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

As an alternative embodiment, the terminal device 1100 performs cell reselection, and the processing module 1110 is further configured to not set, during the first period, the first cell as a candidate cell in the cell reselection procedure.

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

As shown in fig. 12, the embodiment of the present application further provides a communication apparatus 1200. The communication apparatus 1200 is illustratively a communication device 1200. Alternatively, the communication apparatus 1200 is, for example, a chip in a communication device, a combined device or component having the functions of the terminal device described above in the communication device, or the like. The communication device is for example a terminal device, or may also be a chip system or the like. The communication device 1200 includes 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. The processor 1210 is configured to perform the operations performed by the processing module 1110 in the above embodiment, and the transceiver 1230 is configured to perform the operations performed by the transceiver module 1120 in the above embodiment when the instructions or programs stored in the memory 1220 are executed.

Wherein the transceiver 1230 may be a functional unit that can perform both transmission and reception operations, e.g., the transceiver 1230 may be used to perform all transmission and reception operations performed by the terminal device in the embodiment shown in fig. 5, e.g., when performing transmission operations, the transceiver 1230 may be considered a transmitter and when performing reception operations, the transceiver 1230 may be considered a receiver; alternatively, the transceiver 1230 may be a generic term of 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 embodiments of the present application may implement the functions of the terminal device in the embodiment shown in fig. 5, and the operations and/or functions of the respective modules in the communication apparatus 1100 or the communication apparatus 1200 are respectively for implementing the corresponding procedures in the embodiment shown in fig. 5, and are not repeated herein for brevity.

Fig. 13 is a schematic block diagram of a communication device 1300 provided in an embodiment of the present application. 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, a combined device or component having the functions of the terminal device described above in the communication device, or the like. The communication device 1300 is illustratively 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, may include an antenna, a radio frequency circuit, and the like, and the processing module 1310 may be a processor, for example, a baseband processor, where one or more central processing units (central processing unit, CPU) may be included. When the terminal apparatus 1300 is a component having the above-described terminal function, the transceiver module 1320 may be a radio frequency unit, and the processing module 1310 may be a processor, for example, a baseband processor. When the terminal device 1300 is a chip system, the transceiver module 1320 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.

Wherein the processing module 1310 may be configured to perform all operations performed by the terminal device in the embodiment shown in fig. 7, except for the transceiving operations, such as S71 and S73, and/or other procedures for supporting the techniques described herein. Transceiver module 1320 may be used to perform all of the 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 that can perform both a transmission operation and a reception operation, for example, the transceiver module 1320 may be used to perform all the transmission operation and the reception operation performed by the terminal device in the embodiment shown in fig. 7, for example, the transceiver module 1320 may be considered to be a transmission module when performing a transmission operation and the transceiver module 1320 may be considered to be a reception module when performing a reception operation; alternatively, the transceiver module 1320 may be a generic term of two functional modules, which are a transmitting module and a receiving module, respectively, where the transmitting module is used to perform a transmitting operation, for example, the transmitting module may be used to perform all transmitting operations performed by the terminal device in the embodiment shown in fig. 7, and the receiving module is used to perform receiving operations, for example, the receiving module may be used to perform all 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 bandwidth set allowed to be configured by the control resource set 0 of the 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 alternative 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 there is a channel bandwidth greater than or equal to the bandwidth of the initial BWP among 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:

It is determined that there is a channel bandwidth less than or equal to the second channel bandwidth among the set of channel bandwidths supported by the terminal device 1300.

it is determined that the terminal device 1300 operating on the second channel bandwidth can meet the radio frequency index requirement corresponding to the second channel bandwidth.

As an alternative embodiment, the processing module 1310 is configured to determine supporting the first channel bandwidth by including:

it is determined that there is a channel bandwidth equal to the first channel bandwidth among 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: it is determined that the terminal device 1300 operating on the first channel bandwidth can meet the radio frequency index requirement corresponding to the first channel bandwidth.

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

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

Wherein the transceiver 1430 may be a functional unit that can perform both transmission and reception operations, e.g., the transceiver 1430 may be configured to perform all of the transmission and reception operations performed by the terminal device in the embodiment shown in fig. 7, e.g., when performing transmission operations, the transceiver 1430 may be considered a transmitter and when performing reception operations, the transceiver 1430 may be considered a receiver; alternatively, the transceiver 1430 may be a generic term of two functional units, namely, a transmitter and a receiver, where the transmitter is used to perform a transmitting operation, for example, the transmitter may be used to perform all transmitting operations performed by the terminal device in the embodiment shown in fig. 7, and the receiver is used to perform a receiving operation, for example, the receiver may be used to perform all receiving 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 functions of the terminal device in the embodiment shown in fig. 7, and the operations and/or functions of the respective modules in the communication apparatus 1300 or 1400 are respectively for implementing the corresponding procedures in the embodiment shown in fig. 7, and are not described herein 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. Alternatively, the communication apparatus 1500 may be, for example, a chip in a communication device, a combined device or component having the functions of the terminal device in the communication device, or the like. The communication device 1500 is illustratively a terminal device 1500.

The terminal device 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, may include an antenna, radio frequency circuits, 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 (central processing unit, CPU) therein. When the terminal device 1500 is a component having the terminal functions described above, the transceiver module 1520 may be a radio frequency unit and the processing module 1510 may be a processor, for example, 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, which may include one or more central processing units.

Wherein the processing module 1510 may be used to perform all operations performed by the terminal device in the embodiment shown in fig. 8, except for transceiving operations, such as S87 and S88, and/or other procedures 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 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 1520 may be a functional module that can perform both a transmission operation and a reception operation, for example, the transceiver module 1520 may be used to perform all the transmission operation and the reception operation performed by the terminal device in the embodiment shown in fig. 8, for example, the transceiver module 1520 may be considered to be a transmission module when the transmission operation is performed and the transceiver module 1520 may be considered to be a reception module when the reception operation is performed; alternatively, the transceiver module 1520 may be a generic term of two functional modules, which are a transmitting module and a receiving module, respectively, where the transmitting module is used to perform a transmitting operation, for example, the transmitting module may be used to perform all transmitting operations performed by the terminal device in the embodiment shown in fig. 8, and the receiving module is used to perform receiving operations, for example, the receiving module may be used 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, at 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, and the first channel bandwidth is a channel bandwidth configured for the terminal device for use 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;

the 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 smaller than or equal to and closest to a network carrier bandwidth or a second channel bandwidth.

As an alternative to this embodiment of the present invention,

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 alternatively, the first and second heat exchangers may be,

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

As an alternative embodiment, transceiver 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 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 of the set of bandwidths allowed to be configured by control resource set 0 or greater than or equal to a maximum value of at least one bandwidth of the set of bandwidths allowed to be configured by control resource set 0.

As an alternative to this embodiment of the present invention,

As an alternative embodiment, the fifth channel bandwidth supported by the terminal device 1500 is less than or equal to the network carrier bandwidth or 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 optional implementation manner, the transceiver module 1520 is further configured to send capability information of the terminal device 1500 to the network device, where the capability information is used to configure the first channel bandwidth.

As an alternative embodiment, the processing module 1510 is further configured to:

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

the first cell is not used.

As an alternative embodiment, the processing module 1510 is configured to not use the first cell by any combination of one or more of:

and performing connection reestablishment in the first cell.

As an alternative embodiment, 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 during the first time period.

It is to be appreciated that the processing module 1510 in 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 embodiment of the application further 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 combination device or component having the functions of the terminal device described above in the communication device, or the like. The communication device is for example a terminal device, or may also be a chip system or the like. The communication device 1600 includes a processor 1610, a memory 1620 and a transceiver 1630, wherein the memory 1620 stores instructions or programs, and the processor 1610 is configured to execute the instructions or programs stored in the memory 1620. When executed, the processor 1610 is configured to perform the operations performed by the processing module 1510 in the above embodiment, and the transceiver 1630 is configured to perform the operations performed by the transceiver module 1520 in the above embodiment.

Wherein the transceiver 1630 may be a functional unit that can perform both transmission and reception operations, for example, the transceiver 1630 may be used to perform all transmission and reception operations performed by the terminal device in the embodiment shown in fig. 8, for example, when a transmission operation is performed, the transceiver 1630 may be considered a transmitter, and when a reception operation is performed, the transceiver 1630 may be considered a receiver; alternatively, the transceiver 1630 may be a generic term of two functional units, namely, a transmitter and a receiver, where the transmitter is used to perform a transmitting operation, for example, the transmitter may be used to perform all transmitting operations performed by the terminal device in the embodiment shown in fig. 8, and the receiver is used to perform a receiving operation, for example, the receiver may be used 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 embodiments 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 procedures in the embodiment shown in fig. 8, and are not repeated herein for brevity.

Fig. 17 is a schematic block diagram of a communication apparatus 1700 provided in an embodiment of the present application. Illustratively, 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, a combined device or a component in a communication device having the functions of the network device described above, or the like. Illustratively, communication device 1700 is a network device 1700.

The 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, radio frequency circuitry, 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 (central processing unit, CPU) therein. When the network device 1700 is a component having the above network functions, the transceiver module 1720 may be a radio frequency unit and the processing module 1710 may be a processor. When network device 1700 is a chip system, transceiver module 1720 may be an input-output interface of the chip system (e.g., baseband chip), and processing module may be a processor of the chip system, which may include one or more central processing units.

Wherein the processing module 1710 may be configured to perform all operations performed by the network device in the embodiment shown in fig. 8, except for the transceiving operations, e.g., S81 and S85, and/or other procedures for supporting the techniques described herein. Transceiver module 1720 may be used to perform all of the transceiving operations performed by the 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 can perform both a transmitting operation and a receiving operation, for example, the transceiver module 1720 may be used to perform all the transmitting and receiving operations performed by the network device in the embodiment shown in fig. 8, for example, the transceiver module 1720 may be considered a transmitting module when performing a transmitting operation and the transceiver module 1720 may be considered a receiving module when performing a receiving operation; alternatively, the transceiver module 1720 may be a generic term of two functional modules, which are a transmitting module and a receiving module, respectively, where the transmitting module is used to perform a transmitting operation, for example, the transmitting module may be used to perform all transmitting operations performed by the network device in the embodiment shown in fig. 8, and the receiving module is used to perform receiving operations, for example, the receiving module may be used to perform all receiving operations performed by the network device in the embodiment shown in fig. 8.

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

a processing module 1710, configured to configure a first channel bandwidth for the terminal device according to the capability information, where the first channel bandwidth is an operating 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;

transceiver 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 alternative embodiment, the third channel bandwidth is a channel bandwidth supported by the terminal device that is smaller than or equal to and closest to a network carrier bandwidth or a second channel bandwidth.

As an alternative to this embodiment of the present invention,

a processing module 1710, configured to further configure, for the terminal device, 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 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 in the bandwidth set allowed to be configured by the control resource set 0 of the first cell or is greater than or equal to a maximum value in at least one bandwidth in the bandwidth set allowed to be configured by the control resource set 0;

transceiver 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 network device 1700 in the first cell.

As an alternative to this embodiment of the present invention,

As an optional implementation manner, the fifth channel bandwidth supported by the terminal device is smaller 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 component, and the transceiver module 1720 may be implemented by a transceiver or transceiver-related circuit component.

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

Wherein the transceiver 1830 may be a functional unit that can perform both transmitting and receiving operations, e.g., the transceiver 1830 may be used to perform all of the transmitting and receiving operations performed by the network device in the embodiment shown in fig. 8, e.g., the transceiver 1830 may be considered a transmitter when performing transmitting operations and the transceiver 1830 may be considered a receiver when performing receiving operations; alternatively, the transceiver 1830 may be a generic term of two functional units, namely, a transmitter and a receiver, where the transmitter is used to perform a transmitting operation, for example, the transmitter may be used to perform all transmitting operations performed by the network device in the embodiment shown in fig. 8, and the receiver is used to perform a receiving operation, for example, the receiver may be used 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 embodiments 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 procedures in the embodiment shown in fig. 8, and are not repeated herein for brevity.

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

Fig. 19 shows a simplified schematic diagram of the structure of a terminal device when the communication device is a terminal device. For easy understanding and convenient illustration, in fig. 19, a mobile phone is taken as an example of the terminal device. 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 mainly used for storing software programs and data. The radio frequency circuit is mainly used for converting a baseband signal and a radio frequency signal and processing the radio frequency signal. 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 mainly used for receiving data input by a user and outputting data to the user. It should be noted that some kinds of terminal apparatuses may not have an input/output device.

When data need to be sent, the processor carries out baseband processing on the data to be sent and then outputs a baseband signal to the radio frequency circuit, and the radio frequency circuit carries out radio frequency processing on the baseband signal and then sends the radio frequency signal outwards in the form of electromagnetic waves through the antenna. When data is sent to the terminal equipment, the radio frequency circuit receives a radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data. For ease of illustration, only one memory and processor is 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 storage device, etc. The memory may be provided separately from the processor or may be integrated with the processor, which is not limited by the embodiments of the present application.

In the embodiment of the present application, the antenna and the radio frequency circuit with the transceiver function may be regarded as a transceiver unit of the terminal device, and the processor with 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. The transceiver unit may also be referred to as a transceiver, transceiver device, etc. The processing unit may also be called a processor, a processing board, a processing module, a processing device, etc. Alternatively, a device for implementing a receiving function in the transceiver unit 1910 may be regarded as a receiving unit, and a device for implementing a transmitting function in the transceiver unit 1910 may be regarded as a transmitting unit, that is, the transceiver unit 1910 includes a receiving unit and a transmitting unit. The transceiver unit may also be referred to as a transceiver, transceiver circuitry, or the like. The receiving unit may also be referred to as a receiver, or receiving circuit, among others. The transmitting unit may also sometimes be referred to as a transmitter, or a transmitting circuit, etc.

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

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 illustrated in fig. 4, e.g., S41 and S45, and/or the transceiving unit 1910 is also configured to perform other processes supporting the techniques described herein. A processing unit 1920 for performing all operations performed by the terminal device in the embodiment shown in fig. 4, except for the transceiving operations, e.g. S42-S44, and/or the processing unit 1920 is also for performing other processes supporting the techniques described herein.

As another example, in another implementation, the transceiving unit 1910 is configured to perform all transmit operations and receive operations of the terminal device in the embodiment illustrated in fig. 5, e.g., S52, and/or the transceiving unit 1910 is also configured to perform other procedures that support the techniques described herein. A processing unit 1920 for performing all operations performed by the terminal device in the embodiment shown in fig. 5, except for transceiving operations, e.g., S51 and S53, and/or the processing unit 1920 is also for performing other processes supporting the techniques described herein.

As another example, in yet another implementation, the transceiving unit 1910 is configured to perform all transmit operations and receive operations of the terminal device in the embodiment illustrated in fig. 7, e.g., S72 and S74, and/or the transceiving unit 1910 is also configured to perform other procedures supporting the techniques described herein. A processing unit 1920 for performing all operations performed by the terminal device in the embodiment shown in fig. 7, except for transceiving operations, e.g. S71 and S73, and/or the processing unit 1920 is also for performing other procedures supporting the techniques described herein.

As another example, in yet another implementation, the transceiving unit 1910 is configured to perform all the transmitting operations and receiving operations of the terminal device in the embodiment illustrated in fig. 8, e.g., S82, S83, S84, and S86, and/or the transceiving unit 1910 is also configured to perform other procedures supporting the techniques described herein. A processing unit 1920 for performing all operations performed by the terminal device in the embodiment shown in fig. 8, except for transceiving operations, e.g., S87 and S88, and/or the processing unit 1920 is also for performing other processes supporting 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 receiving and transmitting unit can be an input and output circuit and/or a communication interface; the processing unit is an integrated processor or microprocessor or integrated circuit.

When the communication apparatus 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 in fig. 9. Alternatively, as an example, the device may perform functions similar to processor 1110 in FIG. 11. Alternatively, as an example, the device may perform functions similar to processor 1310 in FIG. 13. Alternatively, as an example, the device may perform functions similar to processor 1510 in 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 embodiment may be the processor 2010 in fig. 20, and perform the corresponding functions; the transceiver module 920 in the above embodiment 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 embodiment may be the processor 2010 in fig. 20, and perform the corresponding functions; the transceiver module 1120 in the above embodiment 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 perform the corresponding functions; the transceiver module 1320 in the above embodiment 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 embodiment may be the processor 2010 in fig. 20, and perform the corresponding functions; the transceiver module 1520 in the above-described embodiment may be the transmit data processor 2020, and/or the receive data processor 2030 in fig. 20. Although a channel encoder, a channel decoder are shown in fig. 20, it is to be understood that these modules are not limiting illustrations of the present embodiment, but are merely schematic.

Fig. 21 shows another form of the present embodiment. The processing device 2100 includes a modulation subsystem, a central processing subsystem, a peripheral subsystem, and other modules. The communication device in this embodiment may act as a modulation subsystem therein. In particular, the modulation subsystem may include a processor 2103, an interface 2104. The processor 2103 performs the function of the processing module 910, and the interface 2104 performs the function 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 modification, the modulation subsystem includes a memory 2106, a processor 2103, and a program stored on the memory 2106 and executable on the processor, and the processor 2103 implements the method on the terminal apparatus side in the above-described method embodiment when executing the program. It is 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 connectable to the processor 2103.

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

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 configured to perform baseband processing functions, such as channel coding, multiplexing, modulation, spreading, and so on. For example, the BBU (processing module) may be configured to control the base station to perform the operation procedure related to the network device in the above method embodiment, for example, generate the above indication information, etc.

In one example, the BBU 2220 may be configured by one or more single boards, where the multiple single boards may support a single access system radio access network (such as an LTE network), or may support different access systems radio access networks (such as an LTE network, a 5G network, or other networks). The BBU 2220 further comprises a memory 2221 and a processor 2222. The memory 2221 is used to store the 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 perform the above-described operation procedure regarding the network device in the method embodiment. The memory 2221 and processor 2222 may serve one or more boards. That is, the memory and the processor may be separately provided on each board. It is also possible that multiple boards 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, the communication apparatus 1500 in fig. 15 or the communication apparatus 1600 in fig. 16, and the network device is, for example, the communication apparatus 1700 in fig. 17 or the 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, e.g., S81-S86 in the embodiment shown in fig. 8, and/or other processes for supporting the techniques described herein.

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

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

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

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

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

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

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

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

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

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

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

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

Note that when the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, the memory (storage module) is integrated into 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 various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on 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 solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

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

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

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

In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in 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 may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a read-only memory (ROM), a random access memory (random access memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely specific embodiments 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 may easily think about changes or substitutions within the technical scope of the embodiments of the present application, and the changes or substitutions are intended to 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

1. A method of communication, comprising:

obtaining first information, wherein the first information comprises 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 a bandwidth that does not support initial BWP of the first cell and determining that does not support the second channel bandwidth; or, determining a bandwidth of an initial BWP not supporting the first cell and determining a set of bandwidths allowed to be configured by the control resource set 0 not supporting the first cell; or determining a bandwidth that does not support initial BWP of the first cell, determining a bandwidth that does not support second channel, and determining a set of bandwidths allowed to be configured by control resource set 0 of the first cell; wherein determining the bandwidth that does not support the initial BWP of the first cell comprises: and determining that the second channel bandwidth is not supported by the channel bandwidth set supported by the terminal device, wherein the channel bandwidth greater than or equal to the bandwidth of the initial BWP does not exist, and the method comprises the following steps: the channel bandwidth set supported by the terminal equipment does not have a channel bandwidth smaller than or equal to the second channel bandwidth;

And determining not to access the first cell, and not setting the first cell as a candidate cell in the cell reselection process in a first time period.

2. The method of claim 1, wherein determining a bandwidth that does not support initial BWP for the first cell comprises:

3. The method of claim 1, 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.

4. A method according to any one of claims 1 to 3, wherein the method further comprises:

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

5. A method of communication, comprising:

Obtaining first information, wherein the first information comprises one or more of a first channel bandwidth or a second channel bandwidth, the first channel bandwidth is an operating channel bandwidth which can be used by a terminal device in a first cell, the second channel bandwidth is a channel bandwidth obtained from common configuration information of the first cell, and in the case that the first information comprises the first channel bandwidth, the first channel bandwidth is obtained through a Radio Resource Control (RRC) message;

if the RRC message includes the first channel bandwidth, determining an initial BWP bandwidth supporting the first cell and the first channel bandwidth; or, if the RRC message does not include the first channel bandwidth, determining to support an initial BWP bandwidth of the first cell and the second channel bandwidth; or if the RRC message includes the first channel bandwidth, determining an initial BWP bandwidth supporting the first cell, the first channel bandwidth, and the second channel bandwidth, wherein determining the bandwidth supporting the initial BWP includes: in the channel bandwidth set supported by the terminal device, there is a channel bandwidth greater than or equal to the bandwidth of the initial BWP, and determining to support the second channel bandwidth includes: a channel bandwidth smaller than or equal to the second channel bandwidth exists in the channel bandwidth set supported by the terminal equipment;

Determining to access the first cell or determining to support the bandwidth of the initial BWP.

6. The method of claim 5, wherein determining a bandwidth supporting initial BWP for the first cell comprises:

7. The method according to claim 5 or 6, wherein the first information further comprises a set of bandwidths allowed to be configured by control resource set 0 of the first cell; determining a bandwidth supporting an initial BWP of the first cell, comprising:

8. The method of claim 5, wherein determining to support the second channel bandwidth comprises:

9. The method of claim 5, wherein determining to support the second channel bandwidth comprises:

10. The method of claim 5, wherein determining to support the first channel bandwidth comprises:

11. A communication device, comprising:

a memory for storing instructions;

a processor configured to execute the instructions stored by the memory, obtain first information, and determine a bandwidth that does not support initial BWP of the first cell and determine that does not support second channel bandwidth; or, determining a bandwidth of an initial BWP not supporting the first cell and determining a set of bandwidths allowed to be configured by the control resource set 0 not supporting the first cell; or determining a bandwidth that does not support initial BWP of the first cell, determining a bandwidth that does not support second channel, and determining a set of bandwidths allowed to be configured by control resource set 0 of the first cell; wherein determining the bandwidth that does not support the initial BWP of the first cell comprises: and determining that the second channel bandwidth is not supported by the channel bandwidth set supported by the terminal device, wherein the channel bandwidth greater than or equal to the bandwidth of the initial BWP does not exist, and the method comprises the following steps: and in the channel bandwidth set supported by the terminal equipment, no channel bandwidth smaller than or equal to the second channel bandwidth exists, the first cell is determined not to be accessed, and is not set as a candidate cell in the cell reselection process in a first time period, the first information comprises the second channel bandwidth, and the second channel bandwidth is obtained from the common configuration information of the first cell.

12. The communication device of claim 11, wherein the processor is configured to determine that the initial BWP is not supported by:

13. The communications apparatus of claim 11, wherein the processor is configured to determine that the second channel band is not supported by:

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

14. The communication apparatus according to any one of claims 11 to 13, further comprising a transceiver configured to receive indication information from a network device, the indication information being configured to instruct the communication apparatus to use one or any combination of the following as a determination condition for accessing the first cell:

15. A communication device, comprising:

A memory for storing instructions;

a processor, configured to execute the instruction stored in the memory, obtain first information, and determine an initial BWP bandwidth supporting a first cell and the first channel bandwidth if the RRC message includes the first channel bandwidth; or if the RRC message does not include the first channel bandwidth, determining to support an initial BWP bandwidth and a second channel bandwidth of the first cell; or if the RRC message includes the first channel bandwidth, determining an initial BWP bandwidth supporting the first cell, the first channel bandwidth, and the second channel bandwidth, wherein determining the bandwidth supporting the initial BWP includes: among the set of channel bandwidths supported by the communication apparatus, there is a channel bandwidth greater than or equal to a bandwidth of the initial BWP, and determining the bandwidth of the initial BWP supporting the first cell includes: and determining to access the first cell, wherein the first information comprises one or more of a first channel bandwidth or a second channel bandwidth, the first channel bandwidth is an operating channel bandwidth which can be used by the communication device in the first cell, and the second channel bandwidth is a channel bandwidth obtained from common configuration information of the first cell, and the first channel bandwidth is obtained through the RRC message when the first information comprises the first channel bandwidth.

16. The communication apparatus of claim 15, wherein the processor is configured to determine a bandwidth supporting an initial BWP for the first cell by:

and determining that the communication device works on the second channel bandwidth and can meet the radio frequency index requirement corresponding to the second channel bandwidth.

17. The communication apparatus according to claim 15 or 16, wherein the first information further comprises a control resource set 0 of the first cell; the processor is configured to determine a bandwidth supporting the initial BWP by:

18. The communications apparatus of claim 15, wherein the processor is configured to determine to support the second channel bandwidth by:

a channel bandwidth less than or equal to the second channel bandwidth is determined to be present in a set of channel bandwidths supported by the communication device.

19. The communications apparatus of claim 15, wherein the processor is configured to determine to support the second channel bandwidth by:

20. The communications apparatus of claim 15, wherein the processor is configured to determine to support the first channel bandwidth by:

a set of channel bandwidths supported by the communication device is determined to have a channel bandwidth equal to the first channel bandwidth.

21. 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 4 or causes the computer to perform the method of any one of claims 5 to 10.

22. A communication system comprising the communication device of any one of claims 11 to 20.