WO2021026929A1

WO2021026929A1 - Communication method and apparatus

Info

Publication number: WO2021026929A1
Application number: PCT/CN2019/100884
Authority: WO
Inventors: 常俊仁; 邓猛; 孔令帅; 张茜; 胡小群; 曹振臻; 冯淑兰
Original assignee: 华为技术有限公司
Priority date: 2019-08-15
Filing date: 2019-08-15
Publication date: 2021-02-18
Also published as: CN116709449A; CN113785618B; CN113785618A

Abstract

The present application relates to a communication method and apparatus. The method comprises: a terminal device receives an RRC message from a network device; the terminal device determines that a second channel bandwidth is not supported, the second channel bandwidth being a channel bandwidth obtained from public configuration information of a first cell; the terminal device determines that a first channel bandwidth indicated by the RRC message is not supported or the terminal device determines that the RRC message does not comprise the first channel bandwidth; and the terminal device does not use the first cell. Embodiments of the present application provide a solution to a case where the terminal device cannot normally work in the first cell, for example, the terminal device may re-access another cell, so that the terminal device can recover to a work state as soon as possible to the greatest extent.

Description

Communication method and device

Technical field

This application relates to the field of communication technology, and in particular to a communication method and device.

Background technique

Under the current communication system, for a terminal device to work normally in a cell, it needs to support at least one of the following three types of bandwidth: the bandwidth of the initial (bandwidth part, BWP) configured for the terminal device, The bandwidth indicated by the public 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 kinds of bandwidths, the terminal device may not work normally in the cell.

However, currently, the terminal device does not have a 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 normally in the cell, and there is currently no solution for this.

Summary of the invention

The embodiments of the present application provide a communication method and device, which are used to provide a mechanism for determining a bandwidth for a terminal device, and provide a solution when the terminal device cannot work normally in a cell.

In a first aspect, a first communication method is provided. The method includes: a terminal device receives an RRC message from a network device; the terminal device determines that a second channel bandwidth is not supported, and the second channel bandwidth is a common The channel bandwidth obtained in the configuration information; 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 The first cell.

The method may be executed by a first communication device, and the first communication device may be a communication device or a communication device capable of supporting the communication device to implement the functions required by the method, such as a chip system. Exemplarily, the first communication device is a terminal device. Exemplarily, the terminal device is a terminal device, or a chip system set in the terminal device for realizing the function of the terminal device, or other component used for realizing the function of the terminal device.

In this embodiment of the application, if the terminal device determines that it does not support the first channel bandwidth and the second channel bandwidth, or does not support the first channel bandwidth and the RRC message does not include the second channel bandwidth, the terminal device may not use the first cell, In order to avoid the situation that the terminal device cannot work normally in the first cell, the terminal device can try to access the cell that can work normally. Or, if the terminal device has already accessed the first cell, you can choose not to continue to use the first cell. This provides a solution for the situation where the terminal device cannot work normally in the first cell. For example, the terminal device can reconnect to other cells. Cell, so that the terminal equipment can be restored to work 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 the following one or any combination of the following multiple:

The terminal device enters an idle state or an inactive state;

The terminal device determines that the first cell is not accessible;

The terminal device determines that the first cell cannot camp on;

The terminal device determines that the access to the first cell fails; or,

The terminal device performs cell reselection.

There may be multiple implementations for determining not to use the first cell. For example, if the terminal device has accessed the first cell, the terminal device may determine that the first cell cannot be camped on. Or, if the terminal device has not accessed the first cell, the terminal device may determine that the first cell cannot be camped on. Or, in order to enable the terminal device to access a cell that can work normally as soon as possible, the terminal device may also perform cell reselection. The embodiment of the present application does not limit the specific operation of the terminal device.

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

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

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

For example, the terminal device has accessed the first cell, the RRC message may be an RRC connection reconfiguration message issued by the first cell, and the RRC connection reconfiguration message may configure the first channel bandwidth for the terminal device. For example, the RRC connection reconfiguration message may be the first RRC connection reconfiguration message received by the terminal device after accessing the first cell through the random access procedure, or it may be the received message except for the first RRC connection reconfiguration message. RRC connection reconfiguration messages other than configuration messages. Or, the terminal device has not yet accessed the first cell, but just received a handover command from the current serving cell, and the handover command is used to instruct the terminal device to switch to the first cell. The embodiments of the present application do not limit specific application scenarios.

With reference to the first aspect, in a possible implementation 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 also indicates the second channel bandwidth.

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

With reference to the first aspect, in a possible implementation manner of the first aspect, determining that the terminal device does not support the second channel bandwidth includes: the terminal device determining that the terminal device supports the channel bandwidth set , There is no bandwidth less than or equal to the second channel bandwidth.

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

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

If at least one channel bandwidth in the set of channel bandwidths supported by the terminal device is less than or equal to the second channel bandwidth, the terminal device can determine that the second channel bandwidth is supported. This implementation manner and the previous implementation manner can be considered to constitute a manner for the terminal device to determine whether to support the second channel bandwidth.

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

The terminal device receives system information from the network device, where the system information indicates 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, for example, SIB1, or may also be other system information. The system information may configure an initial BWP for the terminal device, and the terminal device may communicate in the first cell through the initial BWP, for example, may perform random access in the first cell through the initial BWP. If it is determined that the bandwidth of the second channel is greater than or equal to the bandwidth of the initial BWP, the terminal device may consider that it supports the initial BWP (or the bandwidth of the initial BWP), which is a way for the terminal device to determine whether to support the bandwidth of the initial BWP. This determination method is relatively simple.

The terminal device receives system information from the network device, where the system information indicates 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 in the channel bandwidth set supported by the terminal device.

This is a way to determine whether to support the initial BWP bandwidth through the channel bandwidth set supported by the terminal device. If there is at least one channel bandwidth greater than or equal to the initial BWP in the channel bandwidth set supported by the terminal device, the terminal device can determine to support the initial BWP; otherwise, if the channel bandwidth set supported by the terminal device does not exist greater than or With a channel bandwidth equal to the bandwidth of the initial BWP, the terminal device can determine that the initial BWP is not supported. This method of determining whether to support the bandwidth of the initial BWP and the previous method of determining whether to support the bandwidth of the initial BWP can be applied separately, for example, the terminal device can determine whether to support the bandwidth of the initial BWP according to only one of them; or It can also be combined with applications. For example, the terminal device can determine whether to support the bandwidth of the initial BWP based on these two conditions. If both conditions are met, the terminal device determines to support the bandwidth of the initial BWP, and only one of the two conditions is required If it is not satisfied, the terminal device can determine that it does not support the bandwidth of the initial BWP.

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 it supports the second channel bandwidth and the bandwidth of the initial BWP, the terminal device can determine that the first cell is a usable cell. For example, the terminal device has not accessed the first cell yet, the terminal device can perform in the first cell Random access. Or, if the terminal device has accessed the first cell, the terminal device may continue to camp in 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: the terminal device does not reselect the first cell within the first time period. Set as a candidate cell in the cell reselection process.

If the terminal device does not use the first cell, the terminal device can perform cell reselection. Since the first cell does not meet the requirements of the terminal equipment, if the terminal equipment reselects to the first cell during the cell reselection process, the first cell may still not meet the requirements of the terminal equipment. Therefore, if the terminal equipment reselects to the first cell again The cell may be an invalid choice, increasing the power consumption of the terminal equipment. In this embodiment of the application, the terminal device may use the first cell as the punished cell. For example, if the first cell is not set as a candidate cell in the cell reselection process within the first time period, the terminal device will be The first cell will not be reselected, thereby reducing invalid operations of the terminal equipment and reducing the power consumption of the terminal equipment. The first duration is, for example, set by the terminal device itself, or can be configured by the network device, or can also be specified through a protocol.

With reference to the first aspect, in a possible implementation manner of the first aspect, the method further includes: the terminal device receives instruction information from the network device, and the instruction information is used to instruct the terminal device to The first channel bandwidth and/or the first channel bandwidth are used as a judgment condition for accessing the first cell.

When the terminal device determines whether to access the first cell, which factors are used as the judgment condition, it can be configured by the network device, or determined by the terminal device itself, or specified by the protocol, or directly adopt the default method. Taking the configuration through the network device as an example, the network device can instruct the terminal device which factors are used as the judgment condition for accessing the first cell, and the terminal device can operate according to the instructions of the network device. For example, the network device instructs the terminal device to use the first channel bandwidth as the judgment condition for accessing the first cell, and the terminal device only needs to determine whether to use the first cell according to the first channel bandwidth, and there is no need to judge other bandwidths such as the second channel bandwidth. , Help reduce the power consumption of terminal equipment.

In a second aspect, a second communication method is provided. The method includes: a terminal device obtains first information, and the first information includes the second channel bandwidth or the bandwidth set allowed by the control resource set 0 of the first cell. One or more items, the second channel bandwidth is the channel bandwidth obtained from the common configuration information of the first cell; the terminal device determines based on the bandwidth of the initial BWP of the first cell and the first information Do not access the first cell.

The method may be executed by a second communication device, and the second communication device may be a communication device or a communication device capable of supporting the communication device to implement the functions required by the method, such as a chip system. Exemplarily, the second communication device is a terminal device. Exemplarily, the terminal device is a terminal device, or a chip system set in the terminal device for realizing the function of the terminal device, or other component used for realizing the function of the terminal device.

The embodiments of the present application reduce the probability of a terminal device accessing an inoperable cell, and try to make the terminal device access a cell that can work normally. Moreover, for a cell that may not work normally, the terminal device may not be connected, which also reduces the power consumption and time consumed by the terminal device due to access to such a cell. Moreover, in the embodiment of the present application, the terminal device combines the first information and the initial BWP to comprehensively determine not to access the first cell, which can make the determination result more accurate.

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

The terminal device determines that it does not support the bandwidth of the initial BWP and does not support the second channel bandwidth;

The terminal device determines not to access the first cell.

For example, if the terminal device determines that it does not support the initial BWP bandwidth, it may not access the first cell without determining the second channel bandwidth; or, if the terminal device determines that it does not support the second channel bandwidth, it may not access the first cell without Determine the bandwidth of the initial BWP. Both of these judgment methods only need to judge one bandwidth, which is relatively simple. Alternatively, the terminal device may also start not to access the first cell when it is determined that the bandwidth of the initial BWP and the bandwidth of the second channel are not supported. This judgment method is more comprehensive and can make the judgment result more accurate.

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

This is a 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 can determine the bandwidth that supports the initial BWP.

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

The terminal device determines that there is no 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 can be used to determine whether to support the bandwidth of the initial BWP, so that there are more ways to determine the bandwidth of the initial BWP.

The terminal device determines that the operation of the terminal device on the second channel bandwidth cannot meet the radio frequency index requirement corresponding to the second channel bandwidth.

Determine whether to support the bandwidth of the initial BWP through radio frequency index requirements. Because terminal equipment needs to use radio frequency filters to work, it is a stricter way to determine whether the channel bandwidth is appropriate through radio frequency index requirements. The result is more accurate.

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

This is another way for the terminal device to determine whether to support the bandwidth of the initial BWP. In order 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 and any bandwidth included in the bandwidth set allowed by the control resource set 0 are not the same, it can be determined that the bandwidth of the initial BWP is not supported; otherwise, if the bandwidth of the initial BWP and the control resource set 0 allow If at least one bandwidth included in the configured bandwidth set is the same, the bandwidth supporting the initial BWP can be determined. This determination method is stricter and the result of the determination is also more accurate. This method of determining whether to support the bandwidth of the initial BWP and the previous method of determining whether to support the bandwidth of the initial BWP can be applied separately or in combination, for example, even if the terminal device determines the set of channel bandwidths supported by the terminal device There is a channel bandwidth greater than or equal to the initial BWP bandwidth, but the initial BWP bandwidth and any bandwidth included in the bandwidth set allowed by control resource set 0 are not the same, the terminal device can still determine that the initial BWP is not supported bandwidth.

With reference to the second aspect, in a possible implementation manner of the second aspect, the terminal device determining that the second channel bandwidth is not supported includes: the terminal device determining that the terminal device supports the channel bandwidth set , There is no channel bandwidth less than or equal to the second channel bandwidth.

This is a way for the terminal device to determine whether to support the second channel bandwidth. Conversely, if there is a channel bandwidth less than or equal to the bandwidth of the initial BWP in the set of channel bandwidths supported by the terminal device, the terminal device can determine to support the second channel bandwidth.

With reference to the second aspect, in a possible implementation manner of the second aspect, the determining that the terminal device does not support the second channel bandwidth includes: the terminal device determines that the terminal device determines that the terminal device is Working on the second channel bandwidth can meet the radio frequency index requirements corresponding to the second channel bandwidth.

This is another way for the terminal device to determine whether to support the second channel bandwidth. If the second channel bandwidth does not meet the index parameter requirements of the radio frequency filter of the terminal device, it can be determined that the terminal device does not support the second channel bandwidth. Otherwise, if the second channel bandwidth meets the index parameter requirements of the radio frequency filter of the terminal device, then It can be determined that the terminal device supports the second channel bandwidth. This method is determined by the index parameters of the radio frequency filter, and the determined result is more accurate. This method of determining whether to support the second channel bandwidth and the previous method of determining whether to support the second channel bandwidth can be applied separately or in combination, for example, even if the terminal device determines the set of channel bandwidths supported by the terminal device If there is a channel bandwidth less than or equal to the second channel bandwidth, but the second channel bandwidth does not meet the index parameter requirements of the radio frequency filter of the terminal device, the terminal device can 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 device receives instruction information from the network device, where the instruction information is used to instruct the terminal device to use one of the following or any combination of the following as a judgment condition for accessing the first cell:

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

When the terminal device determines whether to access the first cell, which factors are used as the judgment condition, it can be configured by the network device or determined by the terminal device itself, or it can be stipulated by the protocol, or the default method can also be directly adopted. Taking the configuration through the network device as an example, the network device can instruct the terminal device which factors are used as the judgment condition for accessing the first cell, and the terminal device can operate according to the instructions of the network device. For example, the network device instructs the terminal device to use the second channel bandwidth as the judgment condition for accessing the first cell, and the terminal device only needs to determine whether to use the first cell according to the second channel bandwidth, and there is no need to judge other bandwidths such as the initial BWP bandwidth. , Help reduce the power consumption of terminal equipment.

The terminal device enters an idle state or an inactive state, or the terminal device performs cell reselection.

If the terminal device does not access the first cell, the terminal device can enter an idle state or an inactive state, or the terminal device can also perform cell reselection, etc., to restore the working state as soon as possible. With the method provided in the embodiments of the present application, it is possible to avoid terminal devices from accessing inappropriate cells as much as possible, to ensure that the terminal devices can work normally in suitable cells, and to improve user experience.

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: the terminal device does not reselect the first cell within the first time period. Set as a candidate cell in the cell reselection process.

In a third aspect, a third communication method is provided. The method includes: a terminal device obtains first information, where the first information includes a first channel bandwidth, a second channel bandwidth, or a configuration allowed by the control resource set 0 of the first cell One or more of the bandwidth set in the first cell, the first channel bandwidth is the working channel bandwidth that the terminal device can use in the first cell, and the second channel bandwidth is the common configuration information from the first cell Based on the bandwidth of the initial BWP of the first cell and the first information, the terminal device determines to access the first cell or determines the bandwidth that supports the initial BWP.

The method may be executed by a third communication device, and the third communication device may be a communication device or a communication device capable of supporting the communication device to implement the functions required by the method, such as a chip system. Exemplarily, the third communication device is a terminal device. Exemplarily, the terminal device is a terminal device, or a chip system set in the terminal device for realizing the function of the terminal device, or other component used for realizing the function of the terminal device.

In the embodiment of the present application, the terminal device can determine whether it can work normally in the first cell before accessing the first cell. If it can work normally, the terminal device will access the first cell again, reducing the number of terminal device accesses. The probability of an inoperable cell, try to make the terminal equipment access to a cell that can work normally. Moreover, for a cell that may not work normally, the terminal device may not be connected, which also reduces the power consumption and time consumed by the terminal device due to access to such a cell. Moreover, in this embodiment of the application, the terminal device combines the first information and the initial BWP to comprehensively determine to access the first cell, which can make the determination result more accurate.

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

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

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

The 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.

To determine the access to the first cell, the terminal device can only judge the two bandwidths, with less judgment process and less judgment information that needs to be obtained, which helps to improve the efficiency of judgment; or, it can also judge the three bandwidths. Both are judged, which improves the accuracy of the judgment result and can prevent the terminal equipment from accessing inappropriate cells.

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

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

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 terminal device determines that the operation of the terminal device on the second channel bandwidth 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 terminal device determining the bandwidth that supports the initial BWP includes: the terminal device determines that the bandwidth of the initial BWP and the first At least one bandwidth included in the bandwidth set allowed to be configured in the control resource set 0 of the cell is the same.

With reference to the third aspect, in a possible implementation manner of the third aspect, the terminal device determining to support the second channel bandwidth includes: the terminal device determining the set of channel bandwidths supported by the terminal device, There is a channel bandwidth less than or equal to the second channel bandwidth.

With reference to the third aspect, in a possible implementation manner of the third aspect, the terminal device determining to support the second channel bandwidth includes: the terminal device determines that the terminal device determines that the terminal device is in the Working on the second channel bandwidth can meet the radio frequency index requirements corresponding to the second channel bandwidth.

With reference to the third aspect, in a possible implementation manner of the third aspect, the terminal device determining to support the first channel bandwidth includes: the terminal device determining the set of channel bandwidths supported by the terminal device, There is a channel bandwidth less than or equal to the first channel bandwidth.

This is a way for the terminal device to determine whether to support the first channel bandwidth. If there is a channel bandwidth less than or equal to the first channel bandwidth in the channel bandwidth set supported by the terminal device, the terminal device can determine to support the first channel bandwidth; otherwise, if the channel bandwidth set supported by the terminal device does not exist less than Or a channel bandwidth equal to the first channel bandwidth, and the terminal device may determine that the first channel bandwidth is not supported.

With reference to the third aspect, in a possible implementation manner of the third aspect, the determination by the terminal device to support the first channel bandwidth includes: the terminal device determines that the terminal device determines that the terminal device is in the The operation on the first channel bandwidth can meet the radio frequency index requirements corresponding to the first channel bandwidth.

This is another way for the terminal device to determine whether to support the first channel bandwidth. This method is determined by the index parameters of the radio frequency filter, and the determined result is more accurate. This method of determining whether to support the first channel bandwidth, and the previous method of determining whether to support the first channel bandwidth, can be applied separately or in combination, for example, even if the terminal device determines the set of channel bandwidths supported by the terminal device If there is a channel bandwidth less than or equal to the first channel bandwidth, but the first channel bandwidth does not meet the index parameter requirements of the radio frequency filter of the terminal device, the terminal device can still determine that the first channel bandwidth is not supported.

Regarding the technical effects of the third aspect or various possible implementations of the third aspect, reference may also be made to the introduction of the technical effects of the second aspect or various possible implementations of the second aspect.

In a fourth aspect, a fourth communication method is provided. The method includes: a terminal device receives an RRC message from a network device in a first cell, the RRC message is used to configure a first channel bandwidth for the terminal device, and the first channel bandwidth Is the channel bandwidth used in the first cell configured for the terminal device; the terminal device determines that the first channel bandwidth is less than or equal to the third channel bandwidth included in the set of channel bandwidths supported by the terminal device ; The terminal device continues to use the first cell.

The method may be executed by a fourth communication device, which may be a communication device or a communication device capable of supporting the communication device to implement the functions required by the method, such as a chip system. Exemplarily, the fourth communication device is a terminal device. Exemplarily, the terminal device is a terminal device, or a chip system set in the terminal device for realizing the function of the terminal device, or other component used for realizing the function of the terminal device.

In the embodiment of the present application, the terminal device only needs to determine whether it supports the first channel bandwidth to determine whether it can work normally in the first cell, without excessive determination process, which helps to save the power consumption of the terminal device. In addition, there are also certain requirements for the configuration process of the network equipment. Try to make the first channel bandwidth configured by the network equipment enable the terminal equipment to work normally in the first cell. Through the method provided in the embodiments of the present application, it is possible to avoid terminal equipment accessing inappropriate cells as much as possible, and to improve the user's service experience.

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

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

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

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

For example, the third channel bandwidth may be the maximum value among the channel bandwidths included in the set of channel bandwidths supported by the terminal device, or the third channel bandwidth may include one of the channel bandwidths included in the set of channel bandwidths supported by the terminal device. Or multiple channel bandwidths, 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 channel included in the set of channel bandwidths supported by the terminal device The maximum value in the bandwidth. 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, the working channel bandwidth of the terminal device in the first cell.

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

This is an implementation of the third channel bandwidth. For example, the third channel bandwidth may be the maximum value among the channel bandwidths included in the set of channel bandwidths supported by the terminal device, or the third channel bandwidth may include one of the channel bandwidths included in the set of channel bandwidths supported by the terminal device. Or multiple channel bandwidths, 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 channel included in the set of channel bandwidths supported by the terminal device The maximum value in the bandwidth.

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, and the configuration information is used to configure the terminal device The initial BWP, which is used by the terminal device to communicate with the network device in the first cell, wherein the bandwidth of the initial BWP is greater than or equal to the bandwidth set allowed by control resource set 0 At least one bandwidth is greater than or equal to the maximum value of at least one bandwidth in the bandwidth set allowed to be configured in the control resource set 0.

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

In this formula,

Indicates the number of RBs corresponding to any bandwidth in the bandwidth set allowed to be configured in control resource set 0, or indicates the number of RBs corresponding to the maximum bandwidth included in the bandwidth set allowed to be configured in control resource set 0 (or , Is the number of RBs corresponding to the maximum bandwidth in the bandwidth set allowed for control resource set 0).

Indicates 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 bandwidth supported by the terminal device, or,

The bandwidth of the initial BWP is less than or equal to the 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 bandwidth supported by the terminal device, or the bandwidth of the initial BWP may be less than or equal to the fifth channel bandwidth and the fifth channel bandwidth in the channel bandwidth set supported by the terminal device. The number can be one or more. It can be understood that the bandwidth of the initial BWP can be less than or equal to the minimum channel bandwidth supported by the terminal device, or can 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 channel bandwidth supported by the terminal device. The minimum value of the channel bandwidth. In this way, the bandwidth of the initial BWP can be selected in a wider range.

The fifth channel bandwidth is the minimum value of the channel bandwidth 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 the bandwidth allowed by the control resource set 0 and supported by the terminal device.

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 bandwidth supported by the terminal device, greater than or equal to, and nearest to the bandwidth allowed by the control resource set 0 The channel bandwidth supported by the terminal device. In other words, the initial BWP bandwidth may be less than or equal to the minimum channel bandwidth supported by the terminal device, or it does not need to be less than or equal to the minimum channel bandwidth supported by the terminal device, as long as it is less than or equal to the minimum channel bandwidth supported by the terminal device. The channel bandwidth supported by the terminal device that is greater than or equal to, and is closest to the bandwidth allowed by the control resource set 0 is sufficient. In this way, the bandwidth of the initial BWP can be selected more widely. Wherein, the fifth channel bandwidth is closest to one bandwidth, which means that it does not necessarily have to be equal to the bandwidth, as long as the number of RBs corresponding to the fifth channel bandwidth is the 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 the second channel bandwidth, and the second channel bandwidth is The channel bandwidth obtained from the public configuration information of the first cell.

E.g,

among them,

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

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

In this formula,

Indicates the number of RBs corresponding to the network carrier bandwidth. The network carrier bandwidth is, for example, the second channel bandwidth, or may also be the first channel bandwidth. The second channel bandwidth may be obtained from the public 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 greater than or equal to the number of RBs corresponding to any bandwidth in the bandwidth set allowed by control resource set 0, or the bandwidth of the initial BWP corresponds to The number of RBs is closest to, and greater than or equal to the number of RBs corresponding to the maximum bandwidth in the bandwidth set allowed for control resource set 0. Any bandwidth in the bandwidth set allowed by control resource set 0, for example, the minimum required bandwidth of the terminal device, that is, the minimum bandwidth supported by the terminal device

Or, control the maximum bandwidth in the bandwidth set allowed by resource set 0, for example, the minimum required bandwidth of the terminal device, that is, the minimum bandwidth supported by the terminal device

For example, the network device can 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 device sends capability information of the terminal device to the network device, and the capability information is used to configure the 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 requirements 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:

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

The terminal device does not use the first cell.

The fourth channel bandwidth is, for example, any one or more channel bandwidths included in the channel bandwidth set, or may also be the maximum value of the channel bandwidths included in the channel bandwidth set. In this case, the terminal device determines that it does not support the first channel bandwidth, that is, it determines that it cannot work normally in the first cell. Then the terminal device may not use the first cell to prevent the terminal device from accessing or continuing to camp in a cell that cannot work normally.

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 of the following or any combination of the following multiple:

The terminal device enters an idle state or an inactive state; or,

The terminal device determines that the first cell is not accessible; or,

The terminal device determines that the first cell cannot be camped on; or,

The terminal device determines to stop performing data transmission in the first cell; or,

The terminal device performs cell reselection; or,

The terminal device performs connection re-establishment in the first cell.

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

In a fifth aspect, a fifth communication method is provided, the method comprising: a network device receives capability information of the terminal device from a terminal device; the network device configures a first channel bandwidth for the terminal device according to the capability information, The first channel bandwidth is the working bandwidth configured for the terminal device to be used in the first cell, and the first channel bandwidth is less than or equal to the third channel bandwidth included in the set of channel bandwidths supported by the terminal device 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 executed by a fifth communication device, which may be a communication device or a communication device capable of supporting the communication device to implement the functions required by the method, such as a chip system. Exemplarily, the fifth communication device is a network device, or a chip system set in the network device for realizing the function of the network device, or other component used for realizing the function 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 less than or equal to and closest to the network carrier bandwidth or the second channel bandwidth.

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

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

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

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

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

The network device sends 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.

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

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

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

This can be used as a way for the terminal device to determine whether to support the first channel bandwidth. If the first channel bandwidth is greater than or equal to the bandwidth of the initial BWP, the terminal device determines to support the first channel bandwidth, or if the first channel bandwidth is less than the bandwidth of the initial BWP, the terminal device determines not to support the first channel bandwidth. This method of determining whether to support the first channel bandwidth can be combined with other methods of determining whether to support the first channel bandwidth, or can be applied separately.

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

In a sixth aspect, a communication device is provided, for example, the communication device is a communication device. The communication device is configured to execute the foregoing first aspect or the method in any possible implementation manner of the first aspect. Specifically, the communication device may include a module for executing the method in the first aspect or any possible implementation of the first aspect, for example, including a processing module and a transceiver module. Exemplarily, the communication device is the terminal device as described above. among them,

The transceiver module is used to receive RRC messages from network equipment;

The processing module is configured to determine that a second channel bandwidth is not supported, where the second channel bandwidth is the channel bandwidth 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 that the RRC message does not include the first channel bandwidth;

The processing module is also 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 using one of the following or any combination of the following multiple items:

Enter idle state or inactive state;

Determine that the first cell is not accessible;

Determine that the first cell cannot be camped;

It is determined that the access to the first cell fails; or,

Perform cell reselection.

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 the terminal device can use 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,

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 in the following manner, including:

It is determined that there is no bandwidth less than or equal to the second channel bandwidth in the channel bandwidth set supported by the terminal device.

With reference to the sixth aspect, in a possible implementation manner of the sixth aspect, the processing module is further configured to determine that there is at least one channel bandwidth less than or equal to the first channel bandwidth set supported by the terminal device. The second channel bandwidth is determined 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 the initial BWP:

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

The processing module is further configured to determine that in the channel bandwidth set supported by the terminal device, at least one channel bandwidth is greater than or equal to the 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 the first cell as The candidate cell in the cell reselection process.

With reference to the sixth aspect, in a possible implementation manner of the sixth aspect, the transceiver module is further configured to receive instruction information from the network device, where the instruction information is used to instruct the terminal device to transfer the The first channel bandwidth and/or the first channel bandwidth are used as a judgment condition for accessing the first cell.

Regarding the technical effects brought about by the sixth aspect or various possible implementation manners of the sixth aspect, reference may be made to the introduction of the technical effects of the first aspect or various possible implementation manners of the first aspect.

In a seventh aspect, a communication device is provided, for example, the communication device is a communication device. The communication device is configured to execute the foregoing second aspect or any possible implementation of the second aspect. Specifically, the communication device may include a module for executing the second aspect or the method in any possible implementation manner of the second aspect, for example, including a processing module. Optionally, it may also include a transceiver module. Exemplarily, the communication device is the terminal device as described above. among them,

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

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

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

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

Determine not to access the first cell.

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

It is determined 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.

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

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

It is determined that the terminal device operating on the second channel bandwidth cannot meet the radio frequency index requirement corresponding to the second channel bandwidth.

It is determined that the bandwidth of the initial BWP is different from any bandwidth included in the bandwidth set allowed 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 in the following manner:

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

The transceiver module is also configured to receive instruction information from the network device, where the instruction information is used to instruct the terminal device to use one of the following or any combination of the following as the access to the first cell Analyzing conditions:

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.

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

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

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

In an eighth aspect, a communication device is provided, for example, the communication device is a communication device. The communication device is configured to execute the foregoing third aspect or the method in any possible implementation manner of the third aspect. Specifically, the communication device may include a module for executing the third aspect or the method in any possible implementation manner of the third aspect, for example, including a processing module. Optionally, it may also include a transceiver module. Exemplarily, the communication device is the terminal device as described above. among them,

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

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

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

Determine to support the initial BWP bandwidth and the first channel bandwidth, and determine to access the first cell; or,

Determine to support the initial BWP bandwidth and the second channel bandwidth, and determine to access the first cell; or,

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

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

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.

It is determined 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.

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

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 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 to support the second channel bandwidth in the following manner:

With reference to the eighth aspect, in a possible implementation manner of the eighth aspect, the processing module is configured to determine to support the first channel bandwidth in the following manner, including:

It is determined that there is a channel bandwidth equal to the first channel bandwidth in the set of channel bandwidths supported by the terminal device.

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

Regarding the technical effects brought about by the eighth aspect or various possible implementation manners of the eighth aspect, reference may be made to the introduction to the third aspect or the technical effects of the various possible implementation manners of the third aspect.

In a ninth aspect, a communication device is provided, for example, the communication device is a communication device. The communication device is configured to execute the foregoing fourth aspect or the method in any possible implementation manner of the fourth aspect. Specifically, the communication device may include a module for executing the fourth aspect or the method in any possible implementation manner of the fourth aspect, for example, including a processing module and a transceiver module. Exemplarily, the communication device is the terminal device as described above. among them,

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

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

The processing module is further configured to continue to use the first cell.

With reference to the ninth aspect, in a possible implementation manner of the ninth aspect, the third channel bandwidth is a channel bandwidth supported by the terminal device that is less than or equal to and closest to the network carrier bandwidth or the 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, and the configuration information is used to configure an initial BWP for the terminal device , The initial BWP is used for the terminal device to communicate with the network device in the first cell, wherein the bandwidth of the initial BWP is greater than or equal to at least one of the bandwidth sets allowed by the control resource set 0 The bandwidth is greater than or equal to the maximum value of at least one bandwidth in the bandwidth set allowed to be configured in 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 the second channel bandwidth, and the second channel bandwidth is The channel bandwidth obtained from the public 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, and the capability information is used to configure the first One 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 the fourth channel bandwidth among the channel bandwidths included in the 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 through one of the following or any combination of the following multiple items:

Enter idle state or inactive state; or,

Determine that the first cell is not accessible; or,

It is determined that the first cell cannot be camped; or,

Determine to stop performing data transmission in the first cell; or,

Perform cell reselection; or,

Perform connection re-establishment in the first cell.

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

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

In a tenth aspect, a communication device is provided, for example, the communication device is a communication device. The communication device is used to execute the foregoing fifth aspect or the method in any possible implementation manner of the fifth aspect. Specifically, the communication device may include a module for executing the fifth aspect or the method in any possible implementation manner of the fifth aspect, for example, including a processing module and a transceiver module. Exemplarily, the communication device is the aforementioned network device. among them,

The transceiver module is configured to receive the capability information of the terminal device from the terminal device;

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 to be used in a first cell, and the second A channel bandwidth is less than or equal to the third channel bandwidth included in the 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 less than or equal to and closest to the network carrier bandwidth or the second channel bandwidth.

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

The processing module is further configured to configure the initial BWP bandwidth for the terminal device according to the pre-estimated capability of the terminal device and/or the bandwidth set allowed by the control resource set 0 of the first cell. 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 greater than or equal to at least one bandwidth in the bandwidth set allowed to be configured by the control resource set 0 Maximum

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 To communicate.

With reference to the tenth aspect, in a 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, and the second channel bandwidth is from the first The channel bandwidth obtained from the public configuration information of the 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 the bandwidth of the initial BWP.

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

In an eleventh aspect, a communication device is provided. The communication device includes a processor and a transceiver, and the processor and the transceiver are coupled with each other to implement the methods described in the foregoing first aspect or various possible implementation manners of the first aspect. Exemplarily, the communication device is a communication device. Or illustratively, the communication device is a chip provided in a communication device. Exemplarily, the communication device is a terminal device. Wherein, the transceiver is realized by, for example, an antenna, a feeder, a codec in the communication device, or, if the communication device is a chip set in the communication device, the transceiver is, for example, a communication interface in the chip. Connect with the radio frequency transceiving component in the communication equipment, so as to realize the information transceiving through the radio frequency transceiving component. among them,

The transceiver is used to receive RRC messages from network equipment;

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 public 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 that the RRC message does not include the first channel bandwidth;

The processor is also 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 through one or any combination of the following:

Enter idle state or inactive state;

Determine that the first cell is not accessible;

Determine that the first cell cannot be camped;

It is determined that the access to the first cell fails; or,

Perform cell reselection.

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

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

Combined with the eleventh aspect, in a possible implementation of the eleventh aspect,

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

The RRC message also indicates the second channel bandwidth.

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 in the following manner, including:

With reference to the eleventh aspect, in a possible implementation manner of the eleventh aspect, the processor is further configured to determine that in the channel bandwidth set supported by the terminal device, at least one channel bandwidth is less than or equal to The second channel bandwidth is determined to support the second channel bandwidth.

The transceiver is also used to receive system information from the network device, where the system information indicates an initial BWP;

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

The processor is further configured to determine that in the channel bandwidth set supported by the terminal device, at least one channel bandwidth is greater than or equal to the 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 reselect the first cell within the first time period. Set as a candidate cell in the cell reselection process.

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

Regarding the technical effects brought about by the eleventh aspect or various possible implementation manners of the eleventh aspect, reference may be made to the introduction of the technical effects of the first aspect or various possible implementation manners of the first aspect.

In a twelfth aspect, a communication device is provided. The communication device includes a processor. Optionally, it may also include a transceiver, and the processor and the transceiver are coupled with each other to implement the foregoing second aspect or the methods described in various possible implementation manners of the second aspect. Exemplarily, the communication device is a communication device. Or illustratively, the communication device is a chip set in a communication device. Exemplarily, the communication device is a terminal device. Wherein, the transceiver is realized by, for example, an antenna, a feeder, a codec in the communication device, or, if the communication device is a chip set in the communication device, the transceiver is, for example, a communication interface in the chip. It is connected with the radio frequency transceiving component in the communication equipment to realize the transmission and reception of information through the radio frequency transceiving component. among them,

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

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

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

Determine not to access the first cell.

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

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

Combined with the twelfth aspect, in a possible implementation of the twelfth aspect,

The transceiver is further configured to receive instruction information from the network device, where the instruction information is used to instruct the terminal device to use one of the following or any combination of the following as the access to the first cell Analyzing conditions:

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 to cause the terminal device to perform cell reset selected.

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 reselect the first cell within the first time period. Set as a candidate cell in the cell reselection process.

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

In a thirteenth aspect, a communication device is provided. The communication device includes a processor. Optionally, it may also include a transceiver, and the processor and the transceiver are coupled with each other to implement the foregoing third aspect or the methods described in various possible implementation manners of the third aspect. Exemplarily, the communication device is a communication device. Or illustratively, the communication device is a chip provided in a communication device. Exemplarily, the communication device is a terminal device. Wherein, the transceiver is realized by, for example, an antenna, a feeder, a codec in the communication device, or, if the communication device is a chip set in the communication device, the transceiver is, for example, a communication interface in the chip. It is connected with the radio frequency transceiving component in the communication equipment to realize the transmission and reception of information through the radio frequency transceiving component. among them,

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

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

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

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

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

With reference to the thirteenth aspect, in a possible implementation manner of the thirteenth aspect, the processor is configured to determine to support the first channel bandwidth in the following manner, including:

With reference to the thirteenth aspect, in a possible implementation manner of the thirteenth aspect, the processor is configured to determine to support the first channel bandwidth by determining that the terminal device is on the first channel bandwidth The operation can meet the radio frequency index requirement corresponding to the first channel bandwidth.

Regarding the technical effects brought by the thirteenth aspect or various possible implementation manners of the thirteenth aspect, reference may be made to the introduction of the technical effects of the third aspect or various possible implementation manners of the third aspect.

In a fourteenth aspect, a communication device is provided. The communication device includes a processor and a transceiver, and the processor and the transceiver are coupled with each other to implement the foregoing fourth aspect or the methods described in various possible implementation manners of the fourth aspect. Exemplarily, the communication device is a communication device. Or illustratively, the communication device is a chip provided in a communication device. Exemplarily, the communication device is a terminal device. Wherein, the transceiver is realized by, for example, an antenna, a feeder, a codec in the communication device, or, if the communication device is a chip set in the communication device, the transceiver is, for example, a communication interface in the chip. Connect with the radio frequency transceiving component in the communication equipment, so as to realize the sending and receiving of information through the radio frequency transceiving component. among them,

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

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

The processor is further configured to continue to use the first cell.

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

Combined with the fourteenth aspect, in a possible implementation 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, and the configuration information is used to configure the terminal device The initial BWP, which is used by the terminal device to communicate with the network device in the first cell, wherein the bandwidth of the initial BWP is greater than or equal to the bandwidth set allowed by control resource set 0 At least one bandwidth is greater than or equal to the maximum value of at least one bandwidth in the bandwidth set allowed to be configured in 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 the second channel bandwidth, and the second channel The bandwidth is the channel bandwidth obtained from the public 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, and the capability information is used to configure the 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 through one of the following or any combination of the following multiple items:

Enter idle state or inactive state; or,

Determine that the first cell is not accessible; or,

It is determined that the first cell cannot be camped; or,

Determine to stop performing data transmission in the first cell; or,

Perform cell reselection; or,

Perform connection re-establishment in the first cell.

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

Regarding the technical effects brought by the fourteenth aspect or various possible implementation manners of the fourteenth aspect, reference may be made to the introduction to the technical effects of the fourth aspect or various possible implementation manners of the fourth aspect.

In a fifteenth aspect, a communication device is provided. The communication device includes a processor and a transceiver, and the processor and the transceiver are coupled with each other to implement the foregoing fifth aspect or the methods described in various possible implementation manners of the fifth aspect. Exemplarily, the communication device is a communication device. Or illustratively, the communication device is a chip provided in a communication device. Exemplarily, the communication device is a network device. Wherein, the transceiver is realized by, for example, an antenna, a feeder, a codec in the communication device, or, if the communication device is a chip set in the communication device, the transceiver is, for example, a communication interface in the chip. Connect with the radio frequency transceiving component in the communication equipment, so as to realize the sending and receiving of information through the radio frequency transceiving component. among them,

The transceiver is configured to receive capability information of the terminal device from the terminal device;

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 to be used in a first cell, and the second A channel bandwidth is less than or equal to the third channel bandwidth included in the 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 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 the network carrier bandwidth or the second channel bandwidth.

Combined with the fifteenth aspect, in a possible implementation of the fifteenth aspect,

The processor is further configured to configure the initial BWP bandwidth for the terminal device according to the pre-estimated capabilities of the terminal device and/or the bandwidth set allowed by the control resource set 0 of the first cell. 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 greater than or equal to at least one bandwidth in the bandwidth set allowed to be configured by the control resource set 0 Maximum

The transceiver is also used 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 To communicate.

With reference to the fifteenth aspect, in a 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, and the second channel bandwidth is from the The channel bandwidth obtained from the public 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 the bandwidth of the initial BWP.

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

In a sixteenth aspect, a communication device is provided. The communication device can perform the functions of the terminal device in the above method design. Exemplarily, the communication device is a chip provided in a communication device. Exemplarily, the communication device is a terminal device. The communication device includes: a memory for storing computer executable program codes; and a processor, which is coupled with the memory. The program code stored in the memory includes instructions, and when the processor executes the instructions, the communication device is caused to execute the foregoing first aspect or the method in any one of the possible implementation manners of the first aspect.

Wherein, the communication device may also include a communication interface, which may be a transceiver in a communication device, for example, implemented by an antenna, a feeder, and a codec in the communication device, or if the communication device is a set For a chip in a communication device, the communication interface may be an input/output interface of the chip, such as input/output pins.

In a seventeenth aspect, a communication device is provided. The communication device can perform the functions of the terminal device in the above method design. Exemplarily, the communication device is a chip provided in a communication device. Exemplarily, the communication device is a terminal device. The communication device includes: a memory for storing computer executable program codes; and a processor, which is coupled with the memory. The program code stored in the memory includes instructions, and when the processor executes the instructions, the communication device is caused to execute the foregoing second aspect or the method in any one of the possible implementation manners of the second aspect.

In an eighteenth aspect, a communication device is provided. The communication device can perform the functions of the terminal device in the above method design. Exemplarily, the communication device is a chip provided in a communication device. Exemplarily, the communication device is a terminal device. The communication device includes: a memory for storing computer executable program codes; and a processor, which is coupled with the memory. The program code stored in the memory includes instructions, and when the processor executes the instructions, the communication device is caused to execute the foregoing third aspect or the method in any one of the possible implementation manners of the third aspect.

In a nineteenth aspect, a communication device is provided. The communication device can perform the functions of the terminal device in the above method design. Exemplarily, the communication device is a chip provided in a communication device. Exemplarily, the communication device is a terminal device. The communication device includes: a memory for storing computer executable program codes; and a processor, which is coupled with the memory. The program code stored in the memory includes instructions, and when the processor executes the instructions, the communication device is caused to execute the foregoing fourth aspect or any one of the possible implementation methods of the fourth aspect.

In a twentieth aspect, a communication device is provided. The communication device can perform the functions of the terminal device in the above method design. Exemplarily, the communication device is a chip provided in a communication device. Exemplarily, the communication device is a network device. The communication device includes: a memory for storing computer executable program codes; and a processor, which is coupled with the memory. The program code stored in the memory includes instructions, and when the processor executes the instructions, the communication device is caused to execute the foregoing fifth aspect or the method in any one of the possible implementation manners of the fifth aspect.

In a twenty-first aspect, a first communication system is provided, the communication system including the communication device according to the ninth aspect, the communication device according to the fourteenth aspect, or the communication device according to the nineteenth aspect, and including the communication device according to the nineteenth aspect, and The communication device according to the tenth aspect, the communication device according to the fifteenth aspect, or the communication device according to the twentieth aspect.

In a twenty-second aspect, a computer storage medium is provided, the computer-readable storage medium is used to store a computer program, and when the computer program runs on a computer, the computer executes the first aspect or the first aspect. The method described in any one of the possible implementations.

In a twenty-third aspect, a computer storage medium is provided, the computer-readable storage medium is used to store a computer program, and when the computer program runs on a computer, the computer executes the second aspect or the first aspect. The method described in any one of the possible implementations.

In a twenty-fourth aspect, a computer storage medium is provided, the computer-readable storage medium is used to store a computer program, and when the computer program runs on a computer, the computer executes the third aspect or the third aspect The method described in any one of the possible implementations.

In a twenty-fifth aspect, a computer storage medium is provided, the computer-readable storage medium is used to store a computer program, and when the computer program runs on a computer, the computer executes the fourth aspect or the fourth aspect. The method described in any one of the possible implementations.

In a twenty-sixth aspect, a computer storage medium is provided, the computer-readable storage medium is used to store a computer program, and when the computer program runs on a computer, the computer executes the fifth aspect or the fifth aspect. The method described in any one of the possible implementations.

In a twenty-seventh aspect, a computer program product containing instructions is provided, the computer program product is used to store a computer program, and when the computer program runs on a computer, the computer executes the first aspect or the first aspect. The method described in any one of the possible implementations of the aspect.

In a twenty-eighth aspect, a computer program product containing instructions is provided, the computer program product is used to store a computer program, and when the computer program runs on a computer, the computer executes the second aspect or the first The method described in any one of the possible implementations of the aspect.

In a twenty-ninth aspect, a computer program product containing instructions is provided, the computer program product is used to store a computer program, and when the computer program runs on a computer, the computer executes the third aspect or the third aspect. The method described in any one of the possible implementations of the aspect.

In a thirtieth aspect, a computer program product containing instructions is provided, the computer program product is used to store a computer program, and when the computer program runs on a computer, the computer executes the fourth aspect or the fourth aspect. The method described in any one of the possible implementations.

In a thirty-first aspect, a computer program product containing instructions is provided, the computer program product is used to store a computer program, and when the computer program runs on a computer, the computer can execute the fifth aspect or the fifth aspect. The method described in any one of the possible implementations of the aspect.

The embodiment of the present application provides a solution for the situation that the terminal device cannot work normally in the first cell. For example, the terminal device can re-access to other cells, so that the terminal device can restore the working state as soon as possible.

Description of the drawings

Figure 1 is a schematic diagram of BWP;

Figure 2 is a schematic diagram of configuring BWP for terminal equipment;

FIG. 3 is a schematic diagram of an application scenario of an embodiment of the application;

FIG. 4 is a flowchart of the first communication method provided by an embodiment of this application;

FIG. 5 is a flowchart of a second communication method provided by an embodiment of this application;

6 is a schematic diagram of determining whether to support the initial BWP through the protection bandwidth of the channel bandwidth of the cell in an embodiment of the application;

FIG. 7 is a flowchart of a third communication method provided by an embodiment of this application;

FIG. 8 is a flowchart of a fourth communication method provided by an embodiment of this application;

FIG. 9 is a schematic block diagram of a first terminal device provided by an embodiment of this application;

FIG. 10 is another schematic block diagram of the first terminal device according to an embodiment of this application;

FIG. 11 is a schematic block diagram of a second type of terminal device provided by an embodiment of this application;

FIG. 12 is another schematic block diagram of a second type of terminal device provided by an embodiment of this application;

FIG. 13 is a schematic block diagram of a third terminal device provided by an embodiment of this application;

FIG. 14 is another schematic block diagram of a third terminal device provided by an embodiment of this application;

15 is a schematic block diagram of a fourth terminal device provided by an embodiment of the application;

FIG. 16 is another schematic block diagram of a fourth type of terminal device provided by an embodiment of this application;

FIG. 17 is a schematic block diagram of a network device provided by an embodiment of this application;

FIG. 18 is another schematic block diagram of a network device provided by an embodiment of this application;

FIG. 19 is a schematic block diagram of a communication device provided by an embodiment of this application;

FIG. 20 is another schematic block diagram of a communication device provided by an embodiment of this application;

FIG. 21 is still another schematic block diagram of a communication device provided by an embodiment of this application;

FIG. 22 is another schematic block diagram of a communication device provided by an embodiment of this application.

detailed description

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

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

1) Terminal devices, including devices that provide users with voice and/or data connectivity, specifically, include devices that provide users with voice, or include devices that provide users with data connectivity, or include devices that provide users with voice and data connectivity Sexual equipment. For example, it may include a handheld device with a wireless connection function, or a processing device connected to a wireless modem. The terminal device can communicate with the core network via a radio access network (RAN), exchange voice or data with the RAN, or exchange voice and data with the RAN. The terminal equipment may include user equipment (UE), wireless terminal equipment, mobile terminal equipment, device-to-device communication (device-to-device, D2D) terminal equipment, vehicle to everything (V2X) terminal equipment , Machine-to-machine/machine-type communications (machine-to-machine/machine-type communications, M2M/MTC) terminal equipment, Internet of things (IoT) terminal equipment, subscriber unit (subscriber unit), subscriber station (subscriber) station), mobile station (mobile station), remote station (remote station), access point (access point, AP), remote terminal (remote terminal), access terminal (access terminal), user terminal (user terminal), user Agent (user agent), or user equipment (user device), etc. For example, it may include mobile phones (or "cellular" phones), computers with mobile terminal equipment, portable, pocket-sized, handheld, and computer-built mobile devices. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (personal digital assistants, etc.) PDA), and other equipment. It also includes restricted devices, such as devices with low power consumption, or devices with limited storage capabilities, or devices with limited computing capabilities. Examples include barcodes, radio frequency identification (RFID), sensors, global positioning system (GPS), laser scanners and other information sensing equipment.

As an example and not a limitation, in the embodiment of the present application, the terminal device may also be a wearable device. Wearable devices can also be called wearable smart devices or smart wearable devices, etc. It is a general term for using wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes Wait. A wearable device is a portable device that is directly worn on the body or integrated into the user's clothes or accessories. Wearable devices are not only a hardware device, but also realize powerful functions through software support, data interaction, and cloud interaction. In a broad sense, wearable smart devices include full-featured, large-sized, complete or partial functions that can be achieved without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, and need to cooperate with other devices such as smart phones. Use, such as various smart bracelets, smart helmets, smart jewelry, etc. for physical sign monitoring.

The various terminal devices described above, if they are located on the vehicle (for example, placed in the vehicle or installed in the vehicle), can be considered as vehicle-mounted terminal equipment, for example, the vehicle-mounted terminal equipment is also called on-board unit (OBU). ).

In the embodiment of the present application, the terminal device may also include a relay. Or it can be understood that everything that can communicate with the base station can be regarded as a terminal device.

2) Network equipment, such as access network (AN) equipment, such as a base station (e.g., access point), may refer to equipment that communicates with wireless terminal equipment through one or more cells on the air interface in the access network Or, for example, a network device in a vehicle-to-everything (V2X) technology is a roadside unit (RSU). The base station can be used to convert the received air frame and IP packet to each other, and act as a router between the terminal device and the rest of the access network, where the rest of the access network can include the IP network. The RSU can be a fixed infrastructure entity that supports V2X applications, and can exchange messages with other entities that support V2X applications. The network equipment can also coordinate the attribute management of the air interface. For example, the network equipment may include a long term evolution (LTE) system or an evolved base station (NodeB or eNB or e-NodeB, evolutional Node B) in a long term evolution (advanced, LTE-A) system, Or it may also include the next generation node B (gNB) in the new radio (NR) system (also referred to as the NR system) of the fifth generation mobile communication technology (the 5th generation, 5G), or it may also It includes a centralized unit (CU) and a distributed unit (DU) in a cloud access network (cloud radio access network, Cloud RAN) system, which is not limited in this embodiment of the application.

3) The first channel bandwidth refers to the channel bandwidth used in a cell configured for terminal equipment. For example, the first channel bandwidth may be configured through dedicated signaling, such as a radio resource control (radio resource control, RRC) message, and the RRC message is, for example, an RRC connection reconfiguration message, or may also be another RRC message, or The dedicated signaling may also be other messages besides the RRC message.

4) The second channel bandwidth refers to the channel bandwidth obtained from the common configuration information of a cell. For example, the second channel bandwidth may be carried in a system information block type 1 (SIB1) broadcast by the cell, or may be carried in a handover (handover) command used to instruct the terminal device to perform cell handover.

5) The terms "system" and "network" in the embodiments of this application can be used interchangeably. "At least one" means one or more, and "plurality" means two or more. "And/or" describes the association relationship of the associated object, indicating that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone, where A, B can be singular or plural. The character "/" generally indicates that the associated objects are in an "or" relationship. "The following at least one item (a)" or similar expressions refers to any combination of these items, including any combination of a single item (a) or plural items (a). For example, at least one item (a) of a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple .

And, unless otherwise stated, the ordinal numbers such as "first" and "second" mentioned in the embodiments of this application are used to distinguish multiple objects, and are not used to limit the size, order, timing, and priority of multiple objects. Level or importance, etc. For example, the first channel bandwidth and the second channel bandwidth are only for distinguishing different channel bandwidths, but do not indicate the difference in size, priority, or importance of the two channel bandwidths.

The foregoing introduces some terms and concepts involved in the embodiments of the present application, and the technical features involved in the embodiments of the present application are introduced below.

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

The concept of bandwidth part (BWP) is introduced in NR. When the bandwidth of a cell is large, the terminal equipment can only work on part of the bandwidth of the cell. Each part of the bandwidth of the cell is called a BWP. On a broadband carrier, a network device can simultaneously configure one or more downlink BWPs and one or more uplink BWPs for a terminal device. Each downlink BWP and each uplink BWP configured to the terminal device corresponds to a BWP identity number (ID).

Please refer to Figure 1, which is a schematic diagram of BWP. Fig. 1 includes a broadband single carrier, and the bandwidth of the single carrier is N physical resource blocks (PRB). Among these N PRBs, PRB1～PRB6 constitute a BWP, for example called BWP1, BWP1 is allocated to terminal device 1; PRB7~PRB9 constitute a BWP, for example called BWP2, BWP2 is allocated to terminal device 2; PRB10~PRB N A BWP is formed, for example called BWP3, and BWP3 is also allocated to terminal device 2.

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

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

For the configuration of the BWP, refer to Figure 2, where the horizontal axis of Figure 2 represents the frequency domain. In Figure 2, the network device configures one BWP on one carrier to the terminal device. Figure 2 shows the bandwidth of the carrier and the bandwidth of the BWP, and the bandwidth of the BWP is less 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 Figure 2, then the network device can configure an offset for the terminal device, and the offset refers to the frequency domain reference The difference between the point and the lowest frequency point of the configured BWP. For example, the offset refers to the number of the PRB corresponding to the frequency domain reference point and the number of the PRB where the lowest frequency point of the configured BWP is located. Difference. In addition, the network device can also configure the bandwidth of the BWP for the terminal device, so that the terminal device can determine the frequency domain position of the BWP according to the position and offset of the frequency domain reference point, and the bandwidth of the BWP.

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

In view of this, the technical solutions of the embodiments of the present application are provided. In this embodiment of the application, if the terminal device determines that it does not support the first channel bandwidth and the second channel bandwidth, or does not support the first channel bandwidth and the RRC message does not indicate the second channel bandwidth, the terminal device may not use the first cell, In order to avoid the situation that the terminal device cannot work normally in the first cell, the terminal device can try to access the cell that can work normally. Or, if the terminal device has already accessed the first cell, you can choose not to continue to use the first cell. This provides a solution for the situation where the terminal device cannot work normally in the first cell. For example, the terminal device can reconnect to other cells. Cell, so that the terminal equipment can be restored to work as soon as possible.

The technical solutions provided by the embodiments of this application can be applied to the fourth generation mobile communication technology (the 4th generation, 4G) system, such as the LTE system, or can be applied to the 5G system, such as the NR system, or can also be applied to the next generation mobile communication System and other similar mobile communication systems. In addition, the technical solutions provided by the embodiments of this application can also be applied to device-to-device (D2D) scenarios, which can be NR D2D scenarios or LTE D2D scenarios, etc., or can be applied to V2X scenarios, which can be The NR V2X scenario may also be an LTE V2X scenario, etc., or may also be applied to other scenarios or other communication systems.

The following describes the network architecture applied by the embodiments of the present application. Please refer to FIG. 3, which is a network architecture applied in the embodiment of this application.

Figure 3 includes network equipment and terminal equipment. Terminal equipment can communicate with network equipment. Of course, the number of terminal devices in FIG. 3 is just an example. In practical applications, a network device can provide services for multiple terminal devices.

The network device in FIG. 3 is, for example, an access network device, such as a base station. Among them, the access network equipment corresponds to different equipment in different systems. For example, in a 4G system, it can correspond to an eNB, and in a 5G system, it corresponds to an access network device in 5G, such as gNB, or it is an access network device in a subsequent evolved communication system. Network access equipment.

Next, the technical solutions provided by the embodiments of the present application will be introduced in conjunction with the drawings.

The embodiment of the present application provides a first communication method. Please refer to FIG. 4, which is a flowchart of the method. In the following introduction process, the application of this method to the network architecture shown in FIG. 3 is taken as an example. In addition, the method can be executed by two communication devices, for example, the first communication device and the second communication device. Among them, the first communication device or the second communication device may be a network device or a communication device capable of supporting the network device to implement the functions required by the method, or may be a terminal device or a terminal device capable of supporting the functions required by the terminal device to implement the method. The communication device can of course also be other communication devices, such as a chip system. And there are no restrictions on the implementation of the first communication device or the second communication device. For example, the two communication devices can be implemented in the same form, for example, both can be implemented in the form of equipment, or the two communication devices can also be implemented as Different forms, for example, the first communication device is implemented in the form of a device, the second communication device is implemented in the form of a chip system, and so on. Among them, the network equipment is, for example, a base station.

For ease of introduction, in the following, the method is executed by the terminal device and the network device as an example, that is, the first communication device is the terminal device and the second communication device is the network device as an example. Because this embodiment is applied to the network architecture shown in FIG. 3 as an example, 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 The function of the network device in the network architecture shown in FIG. 3 can be realized.

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

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

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

The second channel bandwidth may be the channel bandwidth obtained from the common configuration information of the first cell. For example, the RRC message can also indicate the second channel bandwidth. For example, if the RRC message is a handover command, the handover command can indicate the second channel bandwidth of the first cell, which is equivalent to that the source network device can indicate some information about the target cell so that the terminal The device can learn the information of the target cell before handover. Or refer to S45, the network device may also send system information to the terminal device, and the terminal device receives the system information from the network device. The system information is, for example, SIB1, or may also be other system information. The system information may indicate the second channel bandwidth. After receiving the system information from the network device, the terminal device can determine the second channel bandwidth. For example, if the RRC message is an RRC connection reconfiguration message, the terminal device can determine the second channel bandwidth through the system information. If the second channel bandwidth is determined by the network device sending system information to the terminal device, then S45 may occur before S41. It can be understood that S41, S42, and S43 occur after the terminal device has established an RRC connection with the network device, and S45 may occur before the terminal device establishes an RRC connection with the network device.

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

Among them, S42 and S43 can be executed simultaneously, or S42 is executed before S43 (for example, S43 is executed after S42 is executed), or S42 is executed after S43 (for example, S42 is executed after S43 is executed).

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 the working channel bandwidth that can be used in the first cell configured for the terminal device. Among them, if the RRC message is an RRC connection reconfiguration message, the first cell may refer to the cell where the terminal device currently resides, or if the RRC message is a handover command, the first cell may refer to the handover command instructing the terminal device to switch In this case, for example, the cell where the terminal device currently resides is the second cell.

For example, the RRC message is an RRC connection reconfiguration message, and the first channel bandwidth can be determined by the downlink channel bandwidth-per-subcarrier interval-list (downlink channel BW-perSCS) in the serving cell configuration (serving cell config) field of the RRC connection reconfiguration message. -list) and uplink channel bandwidth-each subcarrier interval-list (uplink channel BW-perSCS-list) to indicate. For different subcarrier intervals, the network device can 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 can determine whether to support the first channel bandwidth. If the first channel bandwidth is not supported, the terminal device can perform S44 described later. In this case, the terminal device There may be no need to determine whether to support the second channel bandwidth. Or, if the terminal device supports the first channel bandwidth, the terminal device can determine that it can work normally in the first cell, then the terminal device may not perform S44. At this time, the terminal device may process it as follows: if the RRC message is an RRC connection reconfiguration Message, the terminal device can continue to use the first cell, or if the RRC message is a handover command, the terminal device can start using the first cell (for example, handover to the first cell).

Or, if the RRC message configures the first channel bandwidth, the terminal device can determine whether to support the first channel bandwidth and determine whether to support the second channel bandwidth. If it is determined that the first channel bandwidth and the second channel bandwidth are not supported, the terminal device can perform S44 in the following text, and if it supports at least one of the first channel bandwidth or the second channel bandwidth, the terminal device does not have to 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. No matter which of these three situations, it indicates that the terminal device can work in the first channel bandwidth. If the RRC message is an RRC connection reconfiguration message, the terminal device can continue to use the first cell, or if the RRC message is a handover command, the terminal device can start using the first cell ( For example, handover to the first cell). For example, after the terminal device completes the random access of the first cell through the initial BWP, it can receive the RRC connection reconfiguration message issued by the network device. If the terminal device determines that the configuration information of the first channel bandwidth exists in the RRC connection reconfiguration message, that is, it includes the first channel bandwidth, and the terminal device determines to support the first channel bandwidth, and the terminal device determines to support the carrier broadcast in SIB1 Channel bandwidth (second channel bandwidth), or the terminal device determines that it does not support the channel bandwidth of the carrier broadcast in SIB1, the terminal device can determine that the first cell can be used, for example, data transmission can be continued in the first cell. Or, if the terminal device determines that the RRC connection reconfiguration message contains configuration information of the first channel bandwidth, 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 it supports the information broadcast in SIB1 For the channel bandwidth (second channel bandwidth) of the carrier, the terminal device can determine that the first cell can be used, for example, data transmission can be continued in the first cell. Or, if the terminal device determines that the RRC connection reconfiguration message contains configuration information of the first channel bandwidth, that is, includes the first channel bandwidth, and the terminal device determines that it does not support the first channel bandwidth, and the terminal device determines that it does not support broadcasting in SIB1 If the channel bandwidth of the carrier (the second channel bandwidth) is lower than that of the carrier, the terminal device may not use the first cell.

Or, if the RRC message does not include the first channel bandwidth, the terminal device may directly execute S44 which will be described later. In this case, the terminal device may not need to determine whether to support the second channel bandwidth.

Or, if the RRC message does not include the first channel bandwidth, the terminal device may determine whether to support the second channel bandwidth. If the second channel bandwidth is not supported, the terminal device can perform S44 in the following text, and if the second channel bandwidth is supported, it indicates that the terminal device can work in the first cell, and the terminal device does not need to perform S44. The processing method can be: if the RRC message is an RRC connection reconfiguration message, the terminal device can continue to use the first cell, or if the RRC message is a handover command, the terminal device can start using the first cell (for example, switch to the first cell). Community). For example, after the terminal device completes the random access of the first cell through the initial BWP, it can receive the RRC connection reconfiguration message issued by the network device. If the terminal device determines that the configuration information of the first channel bandwidth does not exist in the RRC connection reconfiguration message, that is, the first channel bandwidth is not included, and the terminal device determines to support the channel bandwidth of the carrier broadcast in SIB1 (the second channel bandwidth) , The terminal device determines that the first cell can be used, for example, it can continue to perform data transmission 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 it does not support the channel bandwidth of the carrier broadcast in SIB1 (second Channel bandwidth), the terminal device may not use the first cell.

As for what factors the terminal device uses as the judgment condition for accessing a cell, it can be determined by the terminal device itself, or it can be configured by the network device, or it can be specified through an agreement. Take the judgment condition configured by the network device as an example. For example, the network device may send instruction information to the terminal device, and the terminal device receives the instruction information from the network device. The indication information can instruct the terminal device to use the first channel bandwidth as the judgment condition for accessing the first cell. If this is the case and the RRC message is configured with the first channel bandwidth, the terminal device only needs to determine whether the first channel bandwidth is supported. , As long as the first channel bandwidth is supported, it can be considered that the terminal device can work normally in the first cell, and S44 may not be executed. If the first channel bandwidth is not supported, S44 is executed, and there is no need for other channel bandwidths (such as the second Channel bandwidth); or, the indication information instructs the terminal device to use the second channel bandwidth as the judgment condition for accessing the first cell. If this is the case, the terminal device only needs to determine whether to support the second channel bandwidth, as long as it supports the second channel bandwidth. With two channel bandwidth, it can be considered that the terminal device can work normally in the first cell, and S44 may not be executed. If the first channel bandwidth is not supported, S44 is executed, and there is no need to perform S44 on other channel bandwidths (such as the first channel bandwidth). Judgment; or, if the indication information indicates that the terminal device uses the first channel bandwidth and the second channel bandwidth as the judgment condition for accessing the first cell, the terminal device needs to determine whether to support the first channel bandwidth and whether to support the second channel bandwidth. When these 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, it also relates to how the terminal device determines whether to support the first channel bandwidth. Introduce separately below.

1. The terminal device determines whether to support the first channel bandwidth.

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 each embodiment of the present application, the channel bandwidth set supported by the terminal device is, for example, set by the terminal device when it leaves the factory. Alternatively, the channel bandwidth set supported by the terminal equipment may also refer to a tested channel bandwidth set. The so-called tested channel bandwidth set means that the channel bandwidths included in the channel bandwidth set are all determined through testing. The channel bandwidth that the device can support. 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 can determine that the first channel bandwidth is supported. If there is no channel bandwidth equal to the first channel bandwidth in the channel bandwidth set supported by the terminal device, the terminal device may determine that the first channel bandwidth is not supported. Wherein, if there is a channel bandwidth equal to the first channel bandwidth in the 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 the radio frequency filter of the terminal device. For example, if the terminal device determines that the first channel bandwidth meets the requirements of the radio frequency filter index parameters of the terminal device, or in other words, the terminal device determines that working on the first channel bandwidth can meet the radio frequency index requirements corresponding to the first channel bandwidth, the terminal device It is determined to support the first channel bandwidth. If the terminal device determines that the first channel bandwidth does not meet the requirements of the radio frequency filter index parameters of the terminal device, or in other words, the terminal device determines that the first channel bandwidth cannot meet the radio frequency index requirements corresponding to the first channel bandwidth. The device determines that the first channel bandwidth is not supported. Among them, the index parameters of the radio frequency filter of the terminal equipment may be determined according to the radio frequency index requirements specified in the 3GPP protocol. Wherein, the terminal device determines that working on the first channel bandwidth can meet the radio frequency index requirements corresponding to the first channel bandwidth. It can be understood that when the terminal device transmits data on the first channel bandwidth, the radio frequency capability of the terminal device can meet the first channel bandwidth. The requirement of radio frequency index corresponding to a channel bandwidth.

The above two methods for determining whether to support the first channel bandwidth can be used separately, that is, the terminal device can use any of the above methods to determine whether to support the first channel bandwidth. Alternatively, the above two methods can also be used in combination. For example, the terminal device determines that a channel bandwidth equal to the first channel bandwidth exists in the set of channel bandwidths supported by the terminal device, and determines that the first channel bandwidth satisfies the radio frequency filter of the terminal device The first channel bandwidth is only activated when the terminal equipment is required to meet the requirements of the index parameters; and if the terminal equipment determines that there is no channel bandwidth equal to the first channel bandwidth in the channel bandwidth set supported by the terminal equipment, or determines the first channel If the 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 use other methods to determine whether to support the first channel bandwidth, which is not specifically limited.

2. The terminal device determines whether to support the second channel bandwidth.

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 the set of channel bandwidths supported by the terminal device. For example, 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 can determine to support the second channel bandwidth. If there is no channel bandwidth less than the second channel bandwidth or a 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 the radio frequency filter of the terminal device. For example, if the terminal device determines that the second channel bandwidth meets the requirements of the radio frequency filter index parameters of the terminal device, or in other words, the terminal device determines that working on the second channel bandwidth can meet the radio frequency index requirements corresponding to the second channel bandwidth, the terminal device It is determined to support the second channel bandwidth. If the terminal device determines that the second channel bandwidth does not meet the requirements of the radio frequency filter index parameters of the terminal device, or in other words, the terminal device determines that working on the second channel bandwidth cannot meet the radio frequency index requirements corresponding to the second channel bandwidth, the terminal The device determines that it does not support the second channel bandwidth. Among them, the index parameters of the radio frequency filter of the terminal equipment may be determined according to the radio frequency index requirements specified in the 3GPP protocol. Wherein, the terminal device determines that working on the second channel bandwidth can meet the radio frequency index requirements corresponding to the second channel bandwidth. It can be understood that when the terminal device transmits data on the second channel bandwidth, the radio frequency capability of the terminal device can meet the first The requirements of the radio frequency index corresponding to the two-channel bandwidth.

The above two methods for determining whether to support the second channel bandwidth can be used separately, that is, the terminal device can use any of the above methods to determine whether to support the second channel bandwidth. Alternatively, the above two methods can also be used in combination. For example, 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, and determines that the second channel bandwidth meets the radio frequency of the terminal device. Only when the filter's index parameters are required, the terminal device is started to support the second channel bandwidth; and if the terminal device determines that the channel bandwidth set supported by the terminal device does not have a channel bandwidth smaller than the second channel bandwidth, it does not exist The channel bandwidth equal to the second channel bandwidth, or it is determined that the second 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 second channel bandwidth.

Alternatively, the terminal device may also use other methods to determine whether to support the second channel bandwidth, which is not specifically limited.

As mentioned above, S41, S42 and S43 occur after the terminal device has established an RRC connection with the network device. Then, if the RRC message is a handover command, the second channel bandwidth can be configured through the handover command (or, referred to as an indication) , The switching command can configure the first channel bandwidth or not. In this case, if the switching command configures the first channel bandwidth and the second channel bandwidth, the terminal device directly determines whether to support the first channel bandwidth and the second channel bandwidth, and if the switching command does not configure the first channel bandwidth, then The terminal device directly determines whether to support the second channel bandwidth. Equivalently, the terminal device only needs to determine the second channel bandwidth once.

Or, if the RRC message is an RRC connection reconfiguration message, the terminal device obtains 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 process, and then the terminal device can determine whether the terminal device supports the second channel bandwidth. If the terminal device determines to support the second channel bandwidth, the terminal device initiates random access. After accessing the network device, the terminal device also needs to determine whether to support the second channel bandwidth, that is, perform the operation of S42. It can be seen that in the case that the RRC message is an RRC connection reconfiguration message, the terminal device can determine whether to support the second channel bandwidth twice, once after S45 and once after S42. For example, the terminal device determines whether to support the second channel bandwidth before initiating random access, which is a general determination process, and the accuracy may not be too high, while the terminal device determines whether to support the second channel bandwidth in S42, which is more accurate Determine the process. For example, the terminal device determines whether to support the second channel bandwidth before initiating random access, and the first method described above for the terminal device to determine whether to support the second channel bandwidth can be used. The terminal device determines whether to support the second channel in S42. For the bandwidth, the second method in which the terminal device described above determines whether to support the second channel bandwidth can be used. Of course, this is only an example, and the specific method for determining whether to support the second channel bandwidth is not limited to this. Alternatively, the terminal device may also be uncertain whether to support the second channel bandwidth before initiating random access. If this is the case, the terminal device only needs to determine whether to support the second channel bandwidth in S42.

If the terminal device receives the system information in S45, the system information may indicate the initial BWP configured for the terminal device in addition to the second channel bandwidth. Then, the terminal device can also determine whether the terminal device supports the bandwidth of the initial BWP before performing random access. For example, the terminal device may be determined by the channel bandwidth set 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 that supports the initial BWP; and if there is no channel bandwidth greater than the initial BWP in the channel bandwidth set supported by the terminal device If there is no channel bandwidth equal to the bandwidth of the initial BWP, the terminal device determines that it does not support the bandwidth of the initial BWP. Among them, if there is a channel bandwidth greater than or equal to the initial BWP bandwidth in the channel bandwidth set supported by the terminal device, the number of channel bandwidths greater than or equal to the initial BWP bandwidth in the channel bandwidth set can be one or Multiple.

As an optional implementation manner, the terminal device may also determine whether the third channel bandwidth is greater than or equal to the bandwidth of the initial BWP. For example, the third channel bandwidth includes the second channel bandwidth, or the first channel bandwidth, or the first channel. Bandwidth and second channel bandwidth. If the third channel bandwidth includes the second channel bandwidth, the terminal device can determine whether the third channel bandwidth is greater than or equal to the bandwidth of the initial BWP before performing random access, and if the third channel bandwidth includes the first channel bandwidth, the terminal After performing random access, for example, in S42, or before S42, or after S42, the device may determine whether the third channel bandwidth is greater than or equal to the bandwidth of the initial BWP. For network devices, the bandwidth of the third channel can be configured to be greater than or equal to the bandwidth of the initial BWP during configuration. If the bandwidth of the third channel is smaller than the bandwidth of the initial BWP, the terminal device may not work normally in the first cell.

If the terminal device determines to support the second channel bandwidth, random access can be performed, or if the terminal device determines to support the first channel bandwidth, random access can be performed, or the terminal device determines to support the first channel bandwidth and the second channel Random access is performed only when the bandwidth is required, or the terminal device determines to support the first channel bandwidth and the second channel bandwidth, and determines that the second channel bandwidth is greater than or equal to the bandwidth of the initial BWP before performing random access. After performing random access, S41 as described above can be performed.

If the terminal device still needs to determine whether the bandwidth of the first channel is greater than or equal to the bandwidth of the initial BWP, this judgment needs to be performed before the terminal device determines not to perform S44 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 through the aforementioned judgment process that S44 may not be performed, In this case, S44 also needs to be continued.

S44. The terminal device does not use the first cell.

For example, the terminal device does not use the first cell, which may include one or any combination of the following: the terminal device enters an idle state, the terminal device enters an inactive state, and the terminal device determines that the first cell is not accessible. In, the terminal device determines that the first cell cannot be camped on, the terminal device determines that the access to the first cell fails, the terminal device initiates an RRC connection re-establishment process in the first cell, or the terminal device performs cell reselection.

For example, the terminal device may enter the idle state and perform cell reselection; or, the terminal device may determine that the first cell is not accessible and enter the idle state, and perform cell reselection; or, the terminal device may determine that the access to the first cell fails Or, the terminal device determines that the first cell cannot be camped on and enters an idle state, and performs cell reselection, and so on. Wherein, if the terminal device has accessed the first cell, for example, the RRC message is an RRC connection reconfiguration message received by the terminal device in the first cell, the terminal device may determine that the first cell cannot be camped on; or, if the terminal device has not yet accessed The first cell, for example, the RRC message is a handover command, which instructs the terminal device to switch to the first cell. At this time, the terminal device has not accessed the first cell yet, the terminal device can determine that the first cell is not accessible, or determine the first cell Access failed. Among them, if the terminal device determines that the first cell is not accessible, the terminal device may not switch to the first cell. For example, the terminal device may initiate an RRC connection re-establishment process in the second cell to re-access the second cell (the second cell). Is the cell where the terminal device currently resides), or the terminal device can also enter an idle state or an inactive state, etc.

If the terminal device needs to perform cell reselection, then, as it can be known from the foregoing judgment process that the terminal device may not work normally in the first cell, as an optional implementation manner, the terminal device may use the first cell as the target cell. Punish the cell, do not select or reselect the first cell within the first time period. For example, if the terminal device does not set the first cell as a candidate cell in the cell reselection process within the first time period, the terminal will be in the first time period The device does not reselect the first cell. Or, if the RRC message is a handover command, the terminal device may not switch to the first cell, and the terminal device may also choose not to switch to the first cell within the first time period. In this way, it is possible to reduce the probability of a terminal device accessing an unsuitable cell, and try to ensure that the terminal device accesses a cell that can work normally. The first duration is, for example, set by the terminal device itself, or can be configured by the network device, or can also be specified through a protocol.

In the embodiment of this application, if the terminal device determines that it does not support the first channel bandwidth and the second channel bandwidth, or does not support the first channel bandwidth and the RRC message does not indicate the second channel bandwidth, the terminal device may not access the first cell , To avoid the situation that the terminal device cannot work normally in the first cell, so that the terminal device tries to access the cell that can work normally. Or, if the terminal device has already accessed the first cell, you can choose not to camp in the first cell. For example, the terminal device can enter the idle state, etc., which provides a solution to the situation that the terminal device cannot work normally in the first cell The solution, for example, the terminal device can also perform cell reselection, etc., so that the terminal device can restore the working state as soon as possible.

In the embodiment shown in FIG. 4, the terminal device may determine whether it can work normally in the first cell after accessing the first cell (for example, the RRC message is an RRC connection reconfiguration message). The embodiment of the present application provides a second communication method. In this embodiment, the terminal device can determine whether it can work normally in the first cell before accessing the first cell, that is, the second communication method can occur. Before the terminal device performs random access in the first cell, if the terminal device determines that it cannot work normally in the first cell, the terminal device can choose not to access the first cell, which reduces the consumption of the terminal device due to access to the first cell. power.

Refer to Figure 5, which is a flowchart of the second communication method. In the following introduction process, the application of this method to the network architecture shown in FIG. 3 is taken as an example. In addition, the method can be executed by two communication devices, for example, the first communication device and the second communication device. Among them, the first communication device or the second communication device may be a network device or a communication device capable of supporting the network device to implement the functions required by the method, or may be a terminal device or a terminal device capable of supporting the functions required by the terminal device to implement the method. The communication device can of course also be other communication devices, such as a chip system. And there are no restrictions on the implementation of the first communication device or the second communication device. For example, the two communication devices can be implemented in the same form, for example, both can be implemented in the form of equipment, or the two communication devices can also be implemented as Different forms, for example, the first communication device is implemented in the form of a device, the second communication device is implemented in the form of a chip system, and so on. Among them, the network equipment is, for example, a base station.

S51. The terminal device obtains first information, where the first information includes one of the following or any combination of the following: the second channel bandwidth, or the bandwidth allowed by the control resource set 0 (CORESET#0) of the first cell set.

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

As an optional manner, the first information may also include a channel bandwidth set 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 by the control resource set 0 of the first cell. For example, the first information includes the second channel bandwidth; or, the first information includes the channel bandwidth set and the second channel bandwidth supported by the terminal device; or, the first information includes the second channel bandwidth and the control resource set of the first cell. The bandwidth set allowed to be configured; or, the first information includes the second channel bandwidth, the channel bandwidth set supported by the terminal device, and the bandwidth set allowed to be configured in the control resource set 0, and so on.

The second channel bandwidth may be the channel bandwidth obtained from the common configuration information of the first cell. For example, the second channel bandwidth can be configured through system information. For example, please refer to S52, the network device sends system information to the terminal device, and the terminal device receives the system information from the network device. S52 can happen before S51. The system information is, for example, SIB1, or may also be other system information. The system information can indicate the second channel bandwidth, and the terminal device can obtain the second channel bandwidth according to the system information. In addition, the system information can also indicate the bandwidth of the initial BWP, and the terminal device can also obtain the bandwidth of the initial BWP according to the system information.

Alternatively, the second channel bandwidth can 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 the handover command from the network device. The handover command is used to instruct the terminal device to switch to the first cell. The switching command may indicate the second channel bandwidth. For example, the switching command includes the second channel bandwidth (or includes configuration information of the second channel bandwidth), and the terminal device can obtain the second channel bandwidth according to the switching command.

The channel bandwidth set supported by the terminal device and the bandwidth set allowed by the control resource set 0 of the first cell are known to the terminal device.

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

After obtaining the first information, the terminal device can determine whether to access the first cell according to the first information and the bandwidth of the initial BWP. S53 mainly introduces the situation where the terminal device determines not to access the first cell. Regarding the terminal device determining not to access the first cell according to the first information and the bandwidth of the initial BWP, there are multiple determination methods, and some examples are introduced below.

1. The first way to determine.

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

In this determination mode, if the terminal device does not support the bandwidth of the initial BWP, it can be determined not to access the first cell, and there is no need to judge other bandwidths.

To determine whether the terminal device supports the bandwidth of the initial BWP, there may be different ways to determine it.

As the first way for the terminal device to determine whether to support the bandwidth of the initial BWP, the terminal device can determine whether to support the bandwidth of the initial BWP through the channel bandwidth set supported by the terminal device. In this case, it can be considered that the first information also includes the channel bandwidth set supported by the terminal device. For example, if there is a channel bandwidth greater than or equal to the bandwidth of the initial BWP in the channel bandwidth set supported by the terminal device, the terminal device can determine the bandwidth that supports the initial BWP. However, if there is no channel bandwidth greater than the bandwidth of the initial BWP in the set of channel bandwidths supported by the terminal device, and there is no channel bandwidth equal to the bandwidth of the initial BWP, 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 initial BWP bandwidth in the channel bandwidth set supported by the terminal device, the number of channel bandwidths greater than or equal to the initial BWP bandwidth included in the channel bandwidth set may be one Or more.

As the second way for the terminal device to determine whether to support the bandwidth of the initial BWP, the terminal device can determine by controlling the bandwidth set allowed by resource set 0, and the bandwidth set allowed by control resource set 0 includes one or more bandwidths. . That is, in order 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 and any bandwidth included in the bandwidth set allowed by the control resource set 0 are not the same, that is, the bandwidth included in the bandwidth set allowed by the control resource set 0 does not have the same bandwidth as the initial BWP. If the bandwidth of the bandwidth is the same, the terminal device determines that the initial BWP bandwidth is not supported; or, if the bandwidth of the initial BWP is the same as at least one bandwidth included in the bandwidth set allowed by the control resource set 0, that is, the control resource set 0 There are one or more bandwidths in the bandwidth included in the set of allowed bandwidths, and the one or more bandwidths are the same as the bandwidth of the initial BWP, then the terminal device determines to support the initial BWP bandwidth. In this way, it can be strictly controlled that the bandwidth of the initial BWP should be configured according to the number of RBs corresponding to the control resource set 0. Among them, the number of RBs corresponding to the allowed bandwidth of control resource set 0, some possible values are 24, 48, 96, that is, the set of the number of RBs allowed to be configured for control resource set 0 is [24, 48, 96 ]. In addition, the number of RBs that the bandwidth of the initial BWP can correspond to may also be related to the subcarrier spacing of the carrier where 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 determine the protection bandwidth of the first cell. For example, the terminal device may determine whether the resource block (resource block, RB) of the initial BWP falls on the edge or outside the protected bandwidth of the first cell, and if the RB of the initial BWP falls on the edge or the protected bandwidth of the first cell Outside the protected bandwidth, the terminal device determines that it does not support the bandwidth of the initial BWP, or if the RB of the initial BWP falls within the protection bandwidth of the first cell, the terminal device determines to support the bandwidth of the initial BWP. For example, the terminal device can determine the initial RB configuration of the initial BWP. If the terminal device determines that the bandwidth of the radio frequency filter of the terminal device can fall within the protection bandwidth of the first cell according to the initial RB, the terminal device determines that Support the bandwidth of the initial BWP, that is, support the initial BWP. Otherwise, if the terminal device determines that the radio frequency filter of the terminal device is used to work on the initial BWP and falls outside the protection bandwidth of the first cell, the terminal device determines that it does not support the bandwidth of the initial BWP, that is The initial BWP is not supported.

As the fourth way for the terminal device to determine whether to support the bandwidth of the initial BWP, the terminal device can determine whether to support the bandwidth of the initial BWP through the channel bandwidth set supported by the terminal device. In this case, it can be considered that the first information also includes the channel bandwidth set 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 can determine the bandwidth that supports the initial BWP. If there is no channel bandwidth less than the second channel bandwidth or a channel bandwidth equal to the second channel bandwidth in the channel bandwidth set supported by the terminal device, the terminal device may determine that the initial BWP 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.

As a fifth way for the terminal device to determine whether to support the bandwidth of the initial BWP, the terminal device can determine whether to support the bandwidth of the initial BWP according to the radio frequency index requirements corresponding to the second channel bandwidth. For example, if the terminal device determines that working on the second channel bandwidth can meet the radio frequency index requirements corresponding to the second channel bandwidth, the terminal device determines to support the bandwidth of the initial BWP, or if the terminal device determines that working on the second channel bandwidth cannot meet the requirements If the second channel bandwidth corresponds to the radio frequency index requirement, the terminal device determines that it does not support the bandwidth of the initial BWP. In the process of using the initial BWP bandwidth, the terminal device should be able to meet the second channel bandwidth or the radio frequency index corresponding to the system bandwidth notified on SIB1, but this does not mean that the terminal device can support the second channel bandwidth issued by SIB1 The size or the size of the system bandwidth. That is to say, to support a channel bandwidth is to consider the size of the supported channel bandwidth on the one hand, and to meet the requirements of radio frequency indicators on the other hand.

In this case, it can be considered that the first information also includes the channel bandwidth set 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 can determine the bandwidth that supports the initial BWP. If there is no channel bandwidth less than the second channel bandwidth or a channel bandwidth equal to the second channel bandwidth in the channel bandwidth set supported by the terminal device, the terminal device may determine that the initial BWP 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.

For example, please refer to FIG. 6, which is a schematic diagram of a terminal device determining whether to support the bandwidth of the initial BWP according to the protection bandwidth of the first cell. 40 MHz 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 protection bandwidth of the first cell, and the other 20MHz represents the bandwidth of the initial BWP. It can be seen that the starting RB of the initial BWP falls within the protection bandwidth of the first cell.

Please also refer to Table 1 for an example of the protection bandwidth of the cell.

Table 1

For example, referring to Table 1, if the bandwidth of the first cell is 50 MHz and the sub-carrier spacing is 15 kHz, the corresponding guard bandwidth is 692.5. N.A in Table 1 indicates that the protection bandwidth is not defined.

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

Among them, the bandwidth of the initial BWP is not supported, and it can also be described as not supporting the initial BWP.

2. The second way to determine.

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

In this determination method, if the terminal device does not support the second channel bandwidth, it can be determined not to access the first cell, and there is no need to judge other bandwidths. Regarding the manner in which the terminal device determines whether to support the second channel bandwidth, reference may be made to the introduction of the embodiment shown in FIG. 4.

3. The third way to determine.

For example, the terminal device determines that it does not support the bandwidth of the initial BWP, and the terminal device determines that it does not support the second channel bandwidth, and the terminal device determines not to access the first cell. Regarding 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, refer to the introduction above.

In this implementation manner, the terminal device only determines not to access the first cell when neither the bandwidth of the initial BWP nor the bandwidth of the second channel is supported.

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

For example, the terminal device determines that the bandwidth of the initial BWP is inconsistent with any bandwidth in the bandwidth set allowed by control resource set 0, but the terminal device determines that at least one of the channel bandwidths supported by the terminal device (such as the second channel bandwidth) can If it supports working in the first cell, the terminal device determines that the condition for not accessing the first cell is not satisfied. For example, the initial BWP bandwidth is 70MHz, the second channel bandwidth is 80MHz, and the bandwidth set allowed by control resource set 0 includes a bandwidth of 50MHz, and the terminal device supports the second channel bandwidth, the terminal device determines not Meet the condition of not accessing the first cell.

Or, if the BW of the initial BWP neither belongs to the bandwidth set allowed by the control resource set 0, nor is it covered by the channel bandwidth that the terminal device can support, the terminal device may determine not to access the first cell, for example, the terminal device The first cell is judged as bar.

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

Regarding which of the above determination methods the terminal device uses to determine not to access the first cell, or in other words, which factors the terminal device uses as the judgment condition for not accessing a cell, it can be determined by the terminal device itself, or by the network device The configuration can also be stipulated by agreement, or the default method can also be adopted. The default method is, for example, to use the second channel bandwidth to determine not to access the first cell, that is, to use the second or third determination method described above.

If the terminal device determines not to access the first cell, for example, the terminal device may barred the first cell. Further, the terminal device may enter an idle state or an inactive state, or the terminal device may also perform cell reselection, etc., to achieve normal operation as soon as possible.

In addition, if the terminal device needs to perform cell reselection, then, as it can be known according to the foregoing judgment process that the terminal device may not work normally in the first cell, as an optional implementation manner, the terminal device may select the first cell As a punished cell, the first cell will not be reselected within the first period of time. For example, if the terminal device does not set the first cell as a candidate cell in the cell reselection process within the first period of time, the terminal device is in the first period of time. The first cell will not be reselected within. Or, 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 switch to the first cell, and the terminal device may also be in the first cell. No longer choose to switch to the first cell within the time period. In this way, it is possible to reduce the probability of a terminal device accessing an unsuitable cell, and try to ensure that the terminal device accesses a cell that can work normally. The first duration is, for example, set by the terminal device itself, or can be configured by the network device, or can also be specified through a protocol.

The embodiment shown in FIG. 5 introduces a process in which the terminal device determines not to access the first cell. Since the terminal device has a judgment process, there may be another situation where it is determined that it can access the first cell. Therefore, the embodiment of the present application provides a third communication method for introducing how a terminal device can determine that it can access the first cell.

Refer to Figure 7, which is a flowchart of the third communication method. In the following introduction process, the application of this method to the network architecture shown in FIG. 3 is taken as an example. In addition, the method can be executed by two communication devices, for example, the first communication device and the second communication device. Among them, the first communication device or the second communication device may be a network device or a communication device capable of supporting the network device to implement the functions required by the method, or may be a terminal device or a terminal device capable of supporting the functions required by the terminal device to implement the method. The communication device can of course also be other communication devices, such as a chip system. And there are no restrictions on the implementation of the first communication device or the second communication device. For example, the two communication devices can be implemented in the same form, for example, both can be implemented in the form of equipment, or the two communication devices can also be implemented as Different forms, for example, the first communication device is implemented in the form of a device, the second communication device is implemented in the form of a chip system, and so on. Among them, the network equipment is, for example, a base station.

S71. The terminal device obtains first information, where the first information includes one of the following or any combination of the following: the first channel bandwidth, the second channel bandwidth, or the control resource set 0 of the first cell (CORESET#0) Bandwidth set allowed to be configured.

For example, the first information includes the first channel bandwidth; or, the first information includes the second channel bandwidth; or, the first information includes the bandwidth set allowed by the control resource set 0; or, the first information includes the first channel bandwidth and The bandwidth set allowed for control resource set 0; or, the first information includes the first channel bandwidth, the second channel bandwidth, and the bandwidth set allowed for control resource set 0, and so on.

As an optional manner, the first information may also include a channel bandwidth set supported by the terminal device. For example, the first information includes one of the following or any combination of the following multiple: the first channel bandwidth, the second channel bandwidth, the channel bandwidth set supported by the terminal device, or the configuration allowed by the control resource set 0 of the first cell Bandwidth collection. For example, the first information includes the second channel bandwidth; or, the first information includes the channel bandwidth set and the first channel bandwidth supported by the terminal device; or, the first information includes the second channel bandwidth and the control resource set of the first cell. The bandwidth set allowed to be configured; or, the first information includes the first channel bandwidth, the second channel bandwidth, the channel bandwidth set supported by the terminal device, and the bandwidth set allowed to be configured in the control resource set 0, and so on.

The second channel bandwidth may be the channel bandwidth obtained from the common configuration information of the first cell. For example, the second channel bandwidth can be configured through system information. For example, please refer to S72, the network device sends system information to the terminal device, and the terminal device receives the system information from the network device. S72 can happen before S71. The system information is, for example, SIB1, or may also be other system information. The system information can indicate the second channel bandwidth, and the terminal device can obtain the second channel bandwidth according to the system information. In addition, the system information can also indicate the bandwidth of the initial BWP, and the terminal device can also obtain the bandwidth of the initial BWP according to the system information.

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

After obtaining the first information, the terminal device can determine whether to access the first cell according to the first information and the bandwidth of the initial BWP. S73 mainly introduces the situation where the terminal device determines to access the first cell. Regarding the terminal device determining access to the first cell according to the first information and the bandwidth of the initial BWP, there are multiple determination methods, and some examples are introduced below.

1. The first way to determine.

For example, if the terminal device determines to support the bandwidth of the initial BWP, the terminal device determines to access the first cell.

In this way of determination, if the terminal device supports the bandwidth of the initial BWP, it can be determined to access the first cell without making other judgments.

To determine whether the terminal device supports the bandwidth of the initial BWP, there may be different ways to determine it. Regarding the various ways for the terminal device to determine whether to support the bandwidth of the initial BWP, reference may be made to the introduction of the embodiment shown in FIG. 5.

2. The second way to determine.

For example, if the terminal device determines to support the second channel bandwidth, the terminal device determines to access the first cell.

In this determination method, if the terminal device supports the second channel bandwidth, it can be determined to access the first cell without making other judgments. Regarding the manner in which the terminal device determines whether to support the second channel bandwidth, reference may be made to the introduction of the embodiment shown in FIG. 4.

3. The third way to determine.

For example, if the terminal device determines to support the first channel bandwidth, the terminal device determines to access the first cell.

For example, if the terminal device obtains the second channel bandwidth through a switching command, as an optional manner, the switching command may also indicate the first channel bandwidth, or the switching command may not indicate the first channel bandwidth. In the case that the switching command indicates the first channel bandwidth, the terminal device supporting the first channel bandwidth can also be used as a judgment condition for whether to access the first cell.

In this determination method, if the terminal device supports the first channel bandwidth, it can be determined to access the first cell without making other judgments. For the manner in which the terminal device determines whether to support the first channel bandwidth, reference may be made to the introduction of the embodiment shown in FIG. 4.

4. The fourth way to determine.

For example, if the terminal device determines to support the bandwidth of the initial BWP, and if the terminal device determines to support the second channel bandwidth, the terminal device determines to access the first cell. For the manner in which the terminal device determines whether to support the bandwidth of the initial BWP, reference may be made to the introduction of the embodiment shown in FIG. 5. For the manner in which the terminal device determines whether to support the second channel bandwidth, reference may be made to the introduction of the embodiment shown in FIG. 4.

Among them, there is a more special case. If the terminal device determines whether to support the initial BWP bandwidth through the channel bandwidth set supported by the terminal device, and determines whether to support the second channel bandwidth through the channel bandwidth set, then to determine to access the first cell, it can be as follows Situation:

The third channel bandwidth in the channel bandwidth set 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 can be understood that there is a first subset in the channel bandwidth set supported by the terminal device, the first subset includes one or more channel bandwidths in the channel bandwidth set, and all channel bandwidths included in the first subset are equal. Bandwidth greater than or equal to the initial BWP. In addition, there is a second subset in the channel bandwidth set supported by the terminal device. The second subset includes one or more channel bandwidths in the channel bandwidth set, and all channel bandwidths included in the second subset are less than or equal to The second channel bandwidth. There is an intersection between the first subset and the second subset, and this intersection is called the third channel bandwidth. The third channel bandwidth may include one or more channel bandwidths.

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

Alternatively, the terminal device may first determine whether to support the second channel bandwidth, if it is determined to support the second channel bandwidth, then determine whether to support the initial BWP bandwidth, and if it is determined to also support the initial BWP bandwidth, it may determine to access the first cell. Or, 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 to support the bandwidth of the initial BWP.

5. The fourth way to determine.

For example, the terminal device determines to support the bandwidth of the initial BWP, and if the terminal device determines to support the first channel bandwidth, the terminal device determines to access the first cell. For the manner in which the terminal device determines whether to support the bandwidth of the initial BWP, reference may be made to the introduction of the embodiment shown in FIG. 5. For the manner in which the terminal device determines whether to support the first channel bandwidth, reference may be made to the introduction of the embodiment shown in FIG. 4.

The third channel bandwidth in the channel bandwidth set supported by the terminal device is greater than or equal to the bandwidth of the initial BWP, and the third channel bandwidth is equal to the first channel bandwidth. It can be understood that there is a first subset in the channel bandwidth set supported by the terminal device, the first subset includes one or more channel bandwidths in the channel bandwidth set, and all channel bandwidths included in the first subset are equal. Bandwidth greater than or equal to the initial BWP. In addition, there is a third subset in the channel bandwidth set supported by the terminal device. The third subset includes one or more channel bandwidths in the channel bandwidth set, and all channel bandwidths included in the third subset are equal to the first Channel bandwidth. There is an intersection between the third subset and the second subset, and this intersection is called the third channel bandwidth, and the third channel bandwidth may include one or more channel bandwidths.

In this implementation mode, for example, the terminal device can first determine whether to support the bandwidth of the initial BWP, if it is determined to support the bandwidth of the initial BWP, then determine whether to support the first channel bandwidth, and if it is determined that the first channel bandwidth is also supported, it can be determined 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 to support the first channel bandwidth.

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

6. The sixth way to determine.

For example, if the terminal device determines to support the second channel bandwidth, and the terminal device determines to support the first channel bandwidth, the terminal device determines to access the first cell. For the manner in which the terminal device determines whether to support the second channel bandwidth and the manner in which it determines whether to support the first channel bandwidth, reference may be made to the introduction of the embodiment shown in FIG. 4.

Among them, there is a more special case. If the terminal equipment determines whether to support the first channel bandwidth through the channel bandwidth set supported by the terminal equipment, and determines whether to support the second channel bandwidth through the channel bandwidth set, then to determine to access the first cell, it can be as follows Situation:

The third channel bandwidth in the channel bandwidth set supported by the terminal device is less than or equal to the second channel bandwidth, and the third channel bandwidth is equal to the first channel bandwidth. It can be understood that there is a second subset in the channel bandwidth set supported by the terminal device, the second subset includes one or more channel bandwidths in the channel bandwidth set, and all channel bandwidths included in the second subset Both are less than or equal to the second channel bandwidth. In addition, there is a third subset in the channel bandwidth set supported by the terminal device, the third subset includes one or more channel bandwidths in the channel bandwidth set, and all channel bandwidths included in the third subset are equal to the first channel bandwidth. There is an intersection between the third subset and the second subset, and this intersection is called the third channel bandwidth, and the third channel bandwidth may include one or more channel bandwidths.

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

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

7. The seventh way to determine.

For example, the terminal device determines to support the bandwidth of the initial BWP, the terminal device determines to support the first channel bandwidth, and the terminal device determines to support the second channel bandwidth, the terminal device determines to access the first cell. For the manner in which the terminal device determines whether to support the bandwidth of the initial BWP, reference may be made to the introduction of the embodiment shown in FIG. 5. Regarding 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, refer to the introduction of the embodiment shown in FIG. 4.

Among them, there is a more special case. If the terminal device determines whether to support the initial BWP bandwidth through the channel bandwidth set supported by the terminal device, determines whether to support the first channel bandwidth through the channel bandwidth set, and determines whether to support the second channel bandwidth through the channel bandwidth set, Then, to determine the access to the first cell, the situation may be as follows:

The third channel bandwidth in the channel bandwidth set 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 can be understood that there is a first subset in the channel bandwidth set supported by the terminal device, the first subset includes one or more channel bandwidths in the channel bandwidth set, and all channel bandwidths included in the first subset are equal. Bandwidth greater than or equal to the initial BWP. And, there is a second subset in the channel bandwidth set supported by the terminal device, the second subset includes one or more channel bandwidths in the channel bandwidth set, and all channel bandwidths included in the second subset are less than or equal to the first Two-channel bandwidth. In addition, there is a third subset in the channel bandwidth set supported by the terminal device. The third subset includes one or more channel bandwidths in the channel bandwidth set, and all channel bandwidths included in the third subset are equal to the first Channel bandwidth. The first subset, the second subset, and the third subset have an intersection, and the intersection is called the third channel bandwidth, and the third channel bandwidth may include one or more channel bandwidths.

In this implementation, for example, the terminal device can first determine whether to support the bandwidth of the initial BWP, if it is determined to support the bandwidth of the initial BWP, then determine whether to support the first channel bandwidth, and if it is determined to support the first channel bandwidth, then determine whether to support the first channel bandwidth. Two-channel bandwidth, if it is determined that the second channel bandwidth is also supported, it can be determined to access the first cell. Alternatively, if the terminal device determines that it supports the bandwidth of the initial BWP and also supports the first channel bandwidth but does not support the second channel bandwidth, it can be determined that the condition for accessing the first cell is not satisfied. Or, if the terminal device determines that it supports the bandwidth of the initial BWP but does not support the first channel bandwidth, the terminal device may determine that the condition for accessing the first cell is not satisfied, and there is no need to determine whether to support the second channel bandwidth. Alternatively, if the terminal device determines that it does not support the bandwidth of the initial BWP, it may determine that the condition for accessing the first cell is not satisfied, and it is not necessary to determine whether the first channel bandwidth is satisfied or whether the second channel bandwidth is satisfied.

Alternatively, the judgment order of the terminal device may also be: first determine whether to support the bandwidth of the initial BWP, then determine whether to support the second channel bandwidth, and then determine whether to support the first channel bandwidth; or, the judgment sequence of the terminal device may also be, First determine whether to support the second channel bandwidth, and then determine whether to support the initial BWP bandwidth, and then determine whether to support the first channel bandwidth; or the order of judgment for the terminal device may also be to determine whether to support the second channel bandwidth first, and then determine Whether to support the first channel bandwidth, then determine whether to support the initial BWP bandwidth; or the terminal device may also determine whether to support the first channel bandwidth first, then determine whether to support the second channel bandwidth, and then determine whether The bandwidth of the initial BWP is supported; or, the judgment sequence of the terminal device may also be to first determine whether to support the first channel bandwidth, then determine whether to support the initial BWP bandwidth, and then determine whether to support the second channel bandwidth. Regardless of the judgment step, the judgment process can refer to the preceding text.

Regarding which method the terminal device uses to determine access to the first cell, or in other words, what factors the terminal device uses as the judgment condition for accessing a cell can be determined by the terminal device itself, or configured by the network device, or It can be stipulated by agreement.

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

If the terminal device determines to access the first cell, then the terminal device can 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.

If the terminal device determines to support the bandwidth of the initial BWP of the first cell, it can access the first cell. For example, the terminal device can initiate random access in the first cell through the initial BWP, or the terminal device can also switch to the first cell. . Or the terminal device may not access the first cell.

Among them, the embodiment shown in FIG. 5 and the embodiment shown in FIG. 7 can be applied separately. For example, the terminal device can use the method provided by the embodiment shown in FIG. 5 to determine not to access the first cell, but not using the figure. The embodiment shown in Figure 7 provides a method to determine to access the first cell, or the terminal device does not use the method provided in the embodiment shown in Figure 5 to determine not to access the first cell, but adopts the implementation shown in Figure 7 This example provides a way to determine access to the first cell. Alternatively, the embodiment shown in FIG. 5 and the embodiment shown in FIG. 7 can also be combined and applied. For example, for a terminal device, the embodiment shown in FIG. 5 can be used to determine not to access the first cell, or The embodiment shown in FIG. 7 is used to determine to access the first cell.

In the embodiment of the present application, the terminal device can determine whether it can work normally in the first cell before accessing the first cell. If it can work normally, the terminal device will access the first cell again, reducing the number of terminal device accesses. The probability of an inoperable cell, try to make the terminal equipment access to a cell that can work normally. Moreover, for a cell that may not work normally, the terminal device may not be connected, which also reduces the power consumption and time consumed by the terminal device due to access to such a cell. Moreover, in the embodiment of the present application, the terminal device combines the first information and the initial BWP to comprehensively determine to access the first cell, which can make the determination result more accurate.

In the embodiment shown in FIG. 4, there may be more judgment conditions for the terminal device to determine whether it can work normally in the first cell. In the following, the embodiment of the present application provides a fourth communication method. In this communication method, the terminal device can determine whether it can work normally in the first cell through fewer judgment conditions.

Please refer to Figure 8, which is a flowchart of the fourth communication method. In the following introduction process, the application of this method to the network architecture shown in FIG. 3 is taken as an example. In addition, the method can be executed by two communication devices, for example, the first communication device and the second communication device. Among them, the first communication device or the second communication device may be a network device or a communication device capable of supporting the network device to implement the functions required by the method, or may be a terminal device or a terminal device capable of supporting the functions required by the terminal device to implement the method. The communication device can of course also be other communication devices, such as a chip system. And there are no restrictions on the implementation of the first communication device or the second communication device. For example, the two communication devices can be implemented in the same form, for example, both can be implemented in the form of equipment, or the two communication devices can also be implemented as Different forms, for example, the first communication device is implemented in the form of a device, the second communication device is implemented in the form of a chip system, and so on. Among them, the network equipment is, for example, a base station.

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

The bandwidth in the bandwidth set allowed by the corresponding control resource set 0 is closest and greater than or equal to the bandwidth included in the bandwidth set allowed by the control resource set 0. This bandwidth is the minimum bandwidth that the terminal device must support. For example, express the bandwidth as

on

Will be introduced later. The subsequent terminal device performs initial access at the initial BWP, and can send the capability information of the terminal device to the network device, and the network device can then configure the first channel bandwidth for the terminal device according to the actual capability of the terminal device.

For example, the number of RBs corresponding to the bandwidth included in the allowed bandwidth set of control resource set 0 may be 24, 48, and 96, respectively, and the number of RBs corresponding to the initial BWP bandwidth of the network configuration may not be strictly 24. , 48 or 96, but can be configured with the minimum bandwidth supported by the terminal device. Currently, terminal equipment generally supports at least 5MHz, 10MHz, and 20MHz bandwidth. For a terminal device working at a low frequency (for example, it may be called FR1, which is a frequency lower than 6 GHz), it can be assumed that the terminal device must support bandwidths of 5 MHz, 10 MHz, and 20 MHz. Therefore, taking the subcarrier spacing of 15kHz as an example, for terminal devices working at low frequencies, when the network configures the initial BWP, the number of RBs closest to the number of RBs corresponding to the minimum bandwidth supported by the terminal device can be 25, 52 And 106, which respectively correspond to the three bandwidths of 5MHz, 10MHz, and 20MHz supported by the terminal device. For example, refer to Table 2. The network device can configure the initial BWP bandwidth for the terminal device working at low frequency according to Table 2.

Table 2

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

Please refer to Table 3 again for some examples of the bandwidth that the RF filter of the terminal equipment working at low frequency needs to meet.

table 3

The first column in Table 3 refers to the sub-carrier interval corresponding to synchronization/physical broadcast channel block (synchronization/physical broadcast channel block, SSB) and physical downlink control channel (physical downlink control channel, PDCCH). The second column refers to the bandwidth included in the bandwidth set allowed by the control resource set 0. The third column in Table 3 indicates the minimum bandwidth supported by the terminal device. The fourth column in Table 3 indicates that the corresponding Under the conditions, the RF filter of the terminal equipment needs to meet the bandwidth.

Table 2 and Table 3 are aimed at terminal equipment that works at low frequencies. Please refer to Table 4 again. According to Table 4, the network device can configure the initial BWP bandwidth for the terminal device operating at a high frequency (for example, it can be called FR2, which is a frequency higher than 6 GHz).

Table 4

For example, for a terminal device working at a high frequency, the initial BWP bandwidth configured by the network device may be 50 MHz or 100 MHz.

Please refer to Table 5 again for some examples of the bandwidth that the RF filter of the terminal equipment working at high frequency needs to meet.

table 5

Regarding Table 4 and Table 5, please refer to the introduction to Table 2 and Table 3 respectively, and the principles are similar.

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

Indicates the number of RBs corresponding to the bandwidth of the initial BWP. then,

In addition, as an optional manner, the bandwidth of the initial BWP is less than or equal to the minimum value of the channel bandwidth supported by the terminal device. then,

As another optional implementation manner, 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 can satisfy the following formula:

In formula 1,

Indicates the number of RBs corresponding to the network carrier bandwidth. The network carrier bandwidth and the second channel bandwidth can be the same or different. For example, the network carrier bandwidth may be, for example, the second channel bandwidth, or the network carrier bandwidth may also be the first channel bandwidth, or the network carrier bandwidth may be other bandwidths different from the first channel bandwidth and the second channel bandwidth. The second channel bandwidth may be obtained from the public 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 greater than or equal to the number of RBs corresponding to any bandwidth in the bandwidth set allowed by control resource set 0, or the bandwidth of the initial BWP corresponds to The number of RBs is closest to, and greater than or equal to the number of RBs corresponding to the maximum bandwidth in the bandwidth set allowed for control resource set 0. Any bandwidth in the bandwidth set allowed by control resource set 0, for example, the minimum required bandwidth of the terminal device, that is, the minimum bandwidth supported by the terminal device

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

For example, the terminal device supports at least

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

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

), or, 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 bandwidth supported by the terminal device, or the fifth channel bandwidth is the minimum value of the channel bandwidth supported by the terminal device, which is greater than or equal to and closest to the bandwidth set allowed by control resource set 0 The channel bandwidth supported by the terminal device. 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 device sends configuration information to the terminal device, and the terminal device receives the configuration information from the network device. The configuration information can configure the initial BWP for the terminal device. For example, the terminal device may perform a random access process in the first cell through the initial BWP, and it can also be understood that the terminal device may use the initial BWP to communicate with the network device in the first cell.

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

S83. The terminal device performs random access in the first cell.

For example, the terminal device can perform random access through the initial BWP. In the embodiment of the present application, the terminal device does not need to determine whether to support the bandwidth of the initial BWP before performing random access, nor does it need to determine whether to support the second channel bandwidth during the random access phase. Instead, after subsequently accessing the first cell, whether to continue using the first cell can be determined according to the first channel bandwidth configured by the network device.

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

For example, the terminal device may send the capability information of the terminal device to the network device in the random access process, for example, send the capability information of the terminal device to the network device through the third message (Msg3) in the random access process, or the terminal device may also The capability information of the terminal device can be sent to the network device after accessing the first cell. The capability information of the terminal device may, for example, indicate the channel bandwidth set supported by the terminal device. For example, the capability information of the terminal device can also indicate

Wait.

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

Before the network device obtains the capability information of the terminal device, the terminal device may only have the initial BWP as the activated BWP, and the initial BWP may include the initial uplink BWP and the initial downlink BWP. The network device can then schedule the terminal device to receive downlink signals on the initial downlink BWP included in the initial BWP, or schedule the terminal device to send uplink signals on the initial uplink BWP included in the initial BWP.

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

At this time, if the network device obtains the actual capability information of the terminal device, the network device can 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 the third channel bandwidth in the channel bandwidth set supported by the terminal device, so that the terminal device can work 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

Said, then

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

Said, then

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 the channel bandwidth obtained from the public configuration information of the first cell. For example, it can be obtained from system information. The system information is, for example, SIB1. For example, the network device can send the configuration to the terminal device through SIB1 in S82. Information, the SIB1 may also include the second channel bandwidth. At least one channel bandwidth less than or equal to the network carrier bandwidth or the second channel bandwidth may be any channel bandwidth in the channel bandwidth set, for example, may include the maximum channel bandwidth in the channel bandwidth set, or may not include the channel The maximum channel bandwidth in the bandwidth set.

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

under these circumstances,

In addition to

Outside,

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

Among them, the network carrier bandwidth

It can be the standard bandwidth, which is the bandwidth defined in the standard, or it can be non-standard bandwidth, which is the bandwidth that is not defined in the standard.

If the terminal device does not support non-standard bandwidth, the network carrier bandwidth configured by the network device

It can be a standard bandwidth; or, if the terminal device can support non-standard bandwidth, the network carrier bandwidth configured by the network device

It can be standard bandwidth or non-standard bandwidth.

If the terminal device supports non-standard bandwidth, one of the implementation methods is that the network device can configure the second channel bandwidth without using SIB1. After the network device obtains the capability information of the terminal device, the dedicated channel bandwidth (BW) of the terminal device According to the capabilities of the terminal device, configure the UE dedicated channel BW as one of the capabilities supported by the terminal device capability report.

Or, if the terminal device supports non-standard bandwidth, one of the implementation methods is that the network device can configure the second channel bandwidth through SIB1. After the network device obtains the capability information of the terminal device, it can use the dedicated channel bandwidth (BW) of the terminal device According to the capabilities of the terminal device, configure the UE dedicated channel BW as one of the capabilities supported by the terminal device capability report.

S86. The network device sends an RRC message to the terminal device in the first cell, and the terminal device receives the RRC message from the network device in the first cell. The RRC message may configure a first channel bandwidth for the terminal device, and 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 the working channel bandwidth configured for the terminal device and used in the first cell.

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

S87. 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.

After receiving the RRC message, the terminal device may judge 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 the third channel bandwidth included in the channel bandwidth set 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 channel bandwidth set supported by the terminal device, If the third channel bandwidth is set, the terminal device determines that it does not support the first channel bandwidth. The third channel bandwidth here is, for example, the channel bandwidth supported by the terminal device that is less 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 in the channel bandwidth set 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 of the channel bandwidth set. As long as there is a channel bandwidth greater than or equal to the first channel bandwidth in the channel bandwidth set, the terminal device can 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 channel bandwidth set The channel bandwidth, that is, all the channel bandwidths in the channel bandwidth set are less than the first channel bandwidth, the terminal device determines that the first channel bandwidth is not supported.

Alternatively, the third channel bandwidth may also be the maximum value among the channel bandwidths included in the channel bandwidth set supported by the terminal device, then the terminal device may determine whether the first channel bandwidth is less than or equal to the channels included in the channel bandwidth set supported by the terminal device The maximum value in the bandwidth. 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 channel bandwidths included in the channel bandwidth set Is the maximum value, the terminal device determines that it does not 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 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. Take the third channel bandwidth as an example.

S88. The terminal device continues to use the first cell.

For example, that the terminal device continues to use the first cell may include that the terminal device continues to camp in the first cell, or the terminal device continues 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 largest channel bandwidth included in the channel bandwidth set supported by the terminal device Value, the terminal device can work normally in the first cell, then the terminal device can continue to camp in the first cell, or can continue to communicate in the first cell. Alternatively, the terminal device can also determine whether the following conditions are met:

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. Regarding the specific operation of the terminal device not using the first cell, please refer to the following introduction.

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

S87 and S88 are based on the example 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 the terminal device may determine that the first channel bandwidth is greater than the fourth channel bandwidth included in the channel bandwidth set. Channel bandwidth. The fourth channel bandwidth is, for example, any one or more channel bandwidths included in the channel bandwidth set, or may also 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.

If the terminal device does not support the first channel bandwidth, the terminal device may not use the first cell. The terminal device does not use the first cell. For example, it may include one of the following operations or any combination of the following multiple operations: the terminal device enters an idle state or an inactive state, the terminal device determines that the first cell is not accessible, and the terminal device determines that the first cell is not accessible. The cell cannot be camped on, the terminal device determines to stop performing data transmission in the first cell, the terminal device performs cell reselection, or the terminal device performs connection reestablishment in the first cell.

For example, the terminal device may enter the idle state and perform cell reselection, or the terminal device may determine that the first cell is not accessible and enter the idle state, and perform cell reselection, or the terminal device may determine that the first cell access fails Or, the terminal device determines that the first cell cannot be camped on and enters an idle state, and performs cell reselection, and so on. Among them, if the terminal device has accessed the first cell, for example, the RRC message is an RRC reconfiguration message, the terminal device may determine that the first cell cannot be camped on; or, if the terminal device has not accessed the first cell, for example, the RRC message is handover The command is to instruct the terminal device to switch to the first cell, and then the terminal device has not yet accessed the first cell at this time, the terminal device may determine that the first cell is not accessible, or determine that the access to the first cell fails. Among them, if the terminal device determines that the first cell is not accessible, the terminal device may not switch to the first cell. For example, the terminal device may initiate an RRC connection re-establishment process in the second cell to re-access the second cell (the second cell). Is the cell where the terminal device currently resides), or the terminal device can also enter an idle state or an inactive state, etc.

If the terminal device needs to perform cell reselection, then, as it can be known from the above judgment process that the terminal device may not work normally in the first cell, as an optional implementation manner, the terminal device may regard the first cell as the target cell. The cell is punished, and the first cell is not reselected within the first time period. For example, the terminal device does not set the first cell as a candidate cell in the cell reselection process within the first time period. Or, if the RRC message is a handover command, the terminal device may not switch to the first cell, and the terminal device may also choose not to switch to the first cell within the first time period. In this way, it is possible to reduce the probability of a terminal device accessing an unsuitable cell, and try to ensure that the terminal device accesses a cell that can work normally. The first duration is, for example, set by the terminal device itself, or can be configured by the network device, or can also be specified through a protocol.

As for what factors the terminal device uses as the judgment condition for using a cell, it can be determined by the terminal device itself, or it can be configured by the network device, or it can be stipulated through an agreement, or a default method can also be adopted. The default way is, for example, to use the first channel bandwidth to determine whether to use the first cell. For example, in this embodiment of the application, the network device may send instruction information to the terminal device, and the terminal device may receive the instruction information from the network device. The instruction information may indicate that the first channel bandwidth is used as the judgment condition for the terminal device to access the first cell.

The device used to implement the foregoing method in the embodiments of the present application will be described below with reference to the accompanying drawings. Therefore, the above content can all be used in the subsequent embodiments, and the repeated content will not be repeated.

FIG. 9 is a schematic block diagram of a communication device 900 according to an embodiment of the application. Exemplarily, the communication device 900 is, for example, a communication device 900. Alternatively, the communication device 900 is, for example, a chip in a communication device, or a combination device or component in the communication device that has the above-mentioned terminal device function. Exemplarily, 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, which may include an antenna and a radio frequency circuit, etc., and the processing module 910 may be a processor, such as a baseband processor, which may include one or more central processing units. Unit (central processing unit, CPU). When the terminal device 900 is a component with the aforementioned terminal function, the transceiver module 920 may be a radio frequency unit, and the processing module 910 may be a processor, such as a baseband processor. When the terminal device 900 is a chip system, the transceiver module 920 may be an input/output interface of a chip system (such as 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 used to perform all the operations performed by the terminal device in the embodiment shown in FIG. 4 except for the transceiving operations, such as S42 to S44, and/or other operations used to support the technology described herein. process. The transceiving module 920 may be used to perform all the transceiving operations performed by the terminal device in the embodiment shown in FIG. 4, such as S41 and S45, and/or other processes used to support the technology described herein.

In addition, the transceiver module 920 may be a functional module that can complete both sending operations and receiving operations. For example, the transceiver module 920 may be used to perform all the sending operations performed by the terminal device in the embodiment shown in FIG. 4 And receiving operations. For example, when performing a sending operation, the transceiver module 920 can be considered as a sending module, and when performing a receiving operation, the transceiver module 920 can be considered as a receiving module; or, the transceiver module 920 can also be a combination of two functional modules. Collectively, these two functional modules are the sending module and the receiving module. The sending module is used to complete the sending operation. For example, the sending module can be used to perform all the sending operations performed by the terminal device in the embodiment shown in FIG. 4, and the receiving module For completing the receiving operation, for example, the receiving module may be used to perform all the receiving operations performed by the terminal device in the embodiment shown in FIG. 4.

For example, the transceiver module 920 is configured to receive RRC messages from network devices;

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

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

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

Enter idle state or inactive state;

Determine that the first cell is not accessible;

Determine that the first cell cannot be camped;

It is determined that the access to the first cell fails; or,

Perform cell reselection.

As an optional implementation manner, the first channel bandwidth is a working channel bandwidth that the terminal device 900 can use in the first cell.

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

As an optional implementation,

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

The RRC message also indicates the second channel bandwidth.

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

It is determined that in the channel bandwidth set supported by the terminal device 900, there is no bandwidth less than or equal to the second channel bandwidth.

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

As an optional implementation,

The transceiver module 920 is further configured to receive system information from the network device, where the system information indicates the 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 optional implementation manner, the system information further indicates the initial BWP, and the processing module 910 is further configured to determine that there is at least one channel bandwidth greater than or equal to the initial BWP in the channel bandwidth set supported by the terminal device 900 bandwidth.

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

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

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

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

As shown in FIG. 10, an embodiment of the present application also provides a communication device 1000. Illustratively, the communication device 1000 is, for example, a communication device 1000. Alternatively, the communication device 1000 is, for example, a chip in a communication device, or a combination device or component in a communication device that has the functions of the aforementioned terminal device, or the like. Exemplarily, 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. The memory 1020 stores instructions or programs, and the processor 1010 is configured to execute instructions or programs stored in the memory 1020. When the instructions or programs stored in the memory 1020 are executed, the processor 1010 is used to perform the operations performed by the processing module 910 in the foregoing embodiment, and the transceiver 1030 is used to perform the operations performed by the transceiver module 920 in the foregoing embodiment.

Among them, the transceiver 1030 may be a functional unit that can perform both sending and receiving operations. For example, the transceiver 1030 can be used to perform all the sending operations performed by the terminal device in the embodiment shown in FIG. 4 And receiving operations. For example, when performing a sending operation, the transceiver 1030 can be considered as a transmitter, and when performing a receiving operation, the transceiver 1030 can be considered as a receiver; or, the transceiver 1030 can also be a two-function unit. Collectively, these two functional units are a transmitter and a receiver respectively. The transmitter is used to complete the transmission operation. For example, the transmitter can be used to perform all the transmission operations performed by the terminal device in the embodiment shown in FIG. 4, and the receiver is used for After completing 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. 4.

It should be understood that the communication device 900 or the communication device 1000 according to the embodiment of the present application can realize the function of the terminal device in the embodiment shown in FIG. 4, and the operation and/or function of each module in the communication device 900 or the communication device 1000 In order to implement the corresponding processes in the embodiment shown in FIG. 4 respectively, for the sake of brevity, details are not described herein again.

FIG. 11 is a schematic block diagram of a communication device 1100 according to an embodiment of the application. Exemplarily, the communication device 1100 is, for example, a communication device 1100. Alternatively, the communication device 1100 is, for example, a chip in a communication device, or a combination device or component in the communication device that has the functions of the aforementioned terminal device, or the like. Exemplarily, 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, which may include an antenna and a radio frequency circuit, and the processing module 1110 may be a processor, such as a baseband processor. The baseband processor may include one or more central processing units. Unit (central processing unit, CPU). When the terminal device 1100 is a component with the aforementioned terminal function, the transceiver module 1120 may be a radio frequency unit, and the processing module 1110 may be a processor, such as a baseband processor. When the terminal device 1100 is a chip system, the transceiver module 1120 may be an input/output interface of a chip system (such as 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 used to perform all operations performed by the terminal device in the embodiment shown in FIG. 5 except for the transceiving operations, such as S51 and S53, and/or other operations used to support the technology described herein. process. The transceiver module 1120 may be used to perform all the transceiver operations performed by the terminal device in the embodiment shown in FIG. 5, such as S52, and/or other processes for supporting the technology described herein.

In addition, the transceiver module 1120 may be a functional module that can complete both sending operations and receiving operations. For example, the transceiver module 1120 may be used to perform all the sending operations performed by the terminal device in the embodiment shown in FIG. 5 And receiving operations, for example, when performing a sending operation, the transceiver module 1120 can be considered as a sending module, and when performing a receiving operation, the transceiver module 1120 can be considered as a receiving module; or, the transceiver module 1120 can also be a combination of two functional modules. Collectively, these two functional modules are the sending module and the receiving module. The sending module is used to complete the sending operation. For example, the sending module can be used to perform all the sending operations performed by the terminal device in the embodiment shown in FIG. 5. The receiving module For completing the receiving operation, for example, the receiving module may be used to perform all the receiving operations performed by the terminal device in the embodiment shown in FIG. 5.

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

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

As an optional implementation manner, 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 in the following manner:

Determine not to access the first cell.

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

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

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

It is determined that there is no channel bandwidth less than or equal to the second channel bandwidth in the channel bandwidth set supported by the terminal device 1100.

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

As an optional implementation,

The transceiver module 1120 is further configured to receive instruction information from the network device, where the instruction information is used to instruct the terminal device 1100 to use one of the following 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 also used to make the terminal device 1100 enter an idle state or an inactive state, or make the terminal device 1100 perform cell reselection.

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

It should be understood that the processing module 1110 in the embodiment 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, an embodiment of the present application also provides a communication device 1200. Exemplarily, the communication apparatus 1200 is, for example, a communication device 1200. Alternatively, the communication device 1200 is, for example, a chip in a communication device, or a combination device or component in the communication device that has the functions of the aforementioned terminal device, or the like. Exemplarily, 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. The memory 1220 stores instructions or programs, and the processor 1210 is configured to execute the instructions or programs stored in the memory 1220. When the instructions or programs stored in the memory 1220 are executed, the processor 1210 is used to perform the operations performed by the processing module 1110 in the foregoing embodiment, and the transceiver 1230 is used to perform the operations performed by the transceiver module 1120 in the foregoing embodiment.

Among them, the transceiver 1230 may be a functional unit that can perform both sending operations and receiving operations. For example, the transceiver 1230 may be used to perform all the sending operations performed by the terminal device in the embodiment shown in FIG. 5 And receiving operations. For example, when performing a sending operation, the transceiver 1230 can be considered as a transmitter, and when performing a receiving operation, the transceiver 1230 can be considered as a receiver; or, the transceiver 1230 can also be a two-function unit. Collectively, these two functional units are a transmitter and a receiver respectively. The transmitter is used to complete the transmission operation. For example, the transmitter can be used to perform all the transmission operations performed by the terminal device in the embodiment shown in FIG. 5, and the receiver is used for After completing 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 device 1100 or the communication device 1200 according to the embodiment of the present application can realize the function of the terminal device in the embodiment shown in FIG. 5, and the operation and/or function of each module in the communication device 1100 or the communication device 1200 In order to implement the corresponding processes in the embodiment shown in FIG. 5 respectively, for the sake of brevity, details are not described herein again.

FIG. 13 is a schematic block diagram of a communication device 1300 according to an embodiment of the application. Exemplarily, the communication apparatus 1300 is, for example, a communication device 1300. Alternatively, the communication device 1300 is, for example, a chip in a communication device, or a combination device or component in the communication device that has the functions of the aforementioned terminal device, or the like. Exemplarily, the communication device 1300 is a terminal device 1300.

The 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, which may include an antenna and a radio frequency circuit, and the processing module 1310 may be a processor, such as a baseband processor. The baseband processor may include one or more central processing units. Unit (central processing unit, CPU). When the terminal device 1300 is a component with the above terminal function, the transceiver module 1320 may be a radio frequency unit, and the processing module 1310 may be a processor, such as a baseband processor. When the terminal device 1300 is a chip system, the transceiver module 1320 may be an input/output interface of a chip system (such as 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 used to perform all the 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 operations used to support the technology described herein. process. The transceiver module 1320 may be used to perform all the transceiver operations performed by the terminal device in the embodiment shown in FIG. 7, such as S72 and S74, and/or other processes used to support the technology described herein.

In addition, the transceiver module 1320 may be a functional module that can perform both sending and receiving operations. For example, the transceiver module 1320 may be used to perform all the sending operations performed by the terminal device in the embodiment shown in FIG. 7 And receiving operations. For example, when performing a sending operation, the transceiver module 1320 can be considered as a sending module, and when performing a receiving operation, the transceiver module 1320 can be considered as a receiving module; or, the transceiver module 1320 can also be a combination of two functional modules. Collectively, these two functional modules are the sending module and the receiving module. The sending module is used to complete the sending operation. For example, the sending module can be used to perform all the sending operations performed by the terminal device in the embodiment shown in FIG. 7. The receiving module For completing 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 the first channel bandwidth, the second channel bandwidth, or the bandwidth set allowed by the control resource set 0 of the first cell Item, the first channel bandwidth is the working channel bandwidth that the terminal device 1300 can use in the first cell, and the second channel bandwidth is the channel bandwidth obtained from the common configuration information of the first cell;

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

As an optional implementation manner, 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 in the following manner:

As an optional implementation manner, the processing module 1310 is configured to determine the bandwidth supporting the initial BWP in the following manner:

It is determined that in the channel bandwidth set supported by the terminal device 1300, there is a channel bandwidth greater than or equal to the bandwidth of the initial BWP.

As an optional implementation manner, the processing module 1310 is configured to determine to support the second channel bandwidth in the following manner:

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

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 optional implementation manner, the processing module 1310 is configured to determine to support the first channel bandwidth in the following manner, including:

It is determined that there is a channel bandwidth equal to the first channel bandwidth in the channel bandwidth set supported by the terminal device 1300.

As an optional implementation manner, the processing module 1310 is configured to determine to support the first channel bandwidth by determining that the terminal device 1300 working on the first channel bandwidth can satisfy the radio frequency corresponding to the first channel bandwidth. Indicator requirements.

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

As shown in FIG. 14, an embodiment of the present application also provides a communication device 1400. Exemplarily, the communication device 1400 is, for example, a communication device 1400. Alternatively, the communication device 1400 is, for example, a chip in a communication device, or a combination device or component having the function of the above-mentioned terminal device in the communication device. Exemplarily, 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. The memory 1420 stores instructions or programs, and the processor 1410 is configured to execute instructions or programs stored in the memory 1420. When the instructions or programs stored in the memory 1420 are executed, the processor 1410 is used to perform the operations performed by the processing module 1310 in the foregoing embodiment, and the transceiver 1430 is used to perform the operations performed by the transceiver module 1320 in the foregoing embodiment.

Among them, the transceiver 1430 may be a functional unit that can perform both sending and receiving operations. For example, the transceiver 1430 can be used to perform all the sending operations performed by the terminal device in the embodiment shown in FIG. 7 And receiving operations, for example, when performing a sending operation, the transceiver 1430 can be considered as a transmitter, and when performing a receiving operation, the transceiver 1430 can be considered as a receiver; or, the transceiver 1430 can also be a combination of two functional units. Collectively, these two functional units are a transmitter and a receiver respectively. The transmitter is used to complete the transmission operation. For example, the transmitter can be used to perform all the transmission operations performed by the terminal device in the embodiment shown in FIG. After completing 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. 7.

It should be understood that the communication device 1300 or the communication device 1400 according to the embodiment of the present application can realize the function of the terminal device in the embodiment shown in FIG. 7, and the operation and/or function of each module in the communication device 1300 or the communication device 1400 To implement the corresponding processes in the embodiment shown in FIG. 7 respectively, for the sake of brevity, details are not described herein again.

FIG. 15 is a schematic block diagram of a communication device 1500 according to an embodiment of the application. Exemplarily, the communication device 1500 is, for example, a communication device 1500. Alternatively, the communication device 1500 is, for example, a chip in a communication device, or a combination device or component in the communication device that has the functions of the aforementioned terminal device, or the like. Exemplarily, the communication device 1500 is 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, which may include an antenna and a radio frequency circuit, etc., and the processing module 1510 may be a processor, such as a baseband processor. The baseband processor may include one or more central processing units. Unit (central processing unit, CPU). When the terminal device 1500 is a component with the aforementioned terminal function, the transceiver module 1520 may be a radio frequency unit, and the processing module 1510 may be a processor, such as a baseband processor. When the terminal device 1500 is a chip system, the transceiver module 1520 may be an input/output interface of a chip system (such as 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 1510 may be used to perform all the operations performed by the terminal device in the embodiment shown in FIG. 8 except for the transceiving operations, such as S87 and S88, and/or other operations used to support the technology described herein. process. The transceiver module 1520 may be used to perform all the transceiver operations performed by the terminal device in the embodiment shown in FIG. 8, such as S82, S83, S84, and S86, and/or other processes used to support the technology described herein.

In addition, the transceiver module 1520 may be a functional module that can complete both sending and receiving operations. For example, the transceiver module 1520 may be used to perform all the sending operations performed by the terminal device in the embodiment shown in FIG. 8 And receiving operations, for example, when performing a sending operation, the transceiver module 1520 can be considered as a sending module, and when performing a receiving operation, the transceiver module 1520 can be considered as a receiving module; or, the transceiver module 1520 can also be a combination of two functional modules. Collectively, these two functional modules are the sending module and the receiving module. The sending module is used to complete the sending operation. For example, the sending module can be used to perform all the sending operations performed by the terminal device in the embodiment shown in FIG. 8. The receiving module For completing the receiving operation, for example, the receiving module may be used to perform all the receiving operations performed by the terminal device in the embodiment shown in FIG. 8.

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

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

The processing module 1510 is further configured to continue to use the first cell.

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

As an optional implementation,

The maximum value of the channel bandwidth 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,

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

As an optional implementation manner, the 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 the terminal device 1500, and the initial BWP is used for the terminal device 1500 in The first cell communicates with the network device, wherein the bandwidth of the initial BWP is greater than or equal to at least one bandwidth in the bandwidth set allowed for configuration of control resource set 0 or greater than or equal to the configuration allowed for control resource set 0 The maximum value of at least one bandwidth in the bandwidth set.

As an optional implementation,

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

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

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

The first cell is not used.

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

Enter idle state or inactive state; or,

Determine that the first cell is not accessible; or,

It is determined that the first cell cannot be camped; or,

Determine to stop performing data transmission in the first cell; or,

Perform cell reselection; or,

Perform connection re-establishment in the first cell.

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

It should be understood that the processing module 1510 in the embodiment 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, an embodiment of the present application also provides a communication device 1600. Exemplarily, the communication device 1600 is a communication device 1600, for example. Alternatively, the communication device 1600 is, for example, a chip in a communication device, or a combination device or component in the communication device that has the functions of the aforementioned terminal device, or the like. Exemplarily, 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. The memory 1620 stores instructions or programs, and the processor 1610 is configured to execute instructions or programs stored in the memory 1620. When the instructions or programs stored in the memory 1620 are executed, the processor 1610 is used to perform the operations performed by the processing module 1510 in the foregoing embodiment, and the transceiver 1630 is used to perform the operations performed by the transceiver module 1520 in the foregoing embodiment.

Among them, the transceiver 1630 may be a functional unit that can perform both sending and receiving operations. For example, the transceiver 1630 can be used to perform all the sending operations performed by the terminal device in the embodiment shown in FIG. 8 And receiving operations. For example, when performing a sending operation, the transceiver 1630 can be considered as a transmitter, and when performing a receiving operation, the transceiver 1630 can be considered as a receiver; or, the transceiver 1630 can also be a two-function unit. Collectively, these two functional units are a transmitter and a receiver respectively. The transmitter is used to complete the transmission operation. For example, the transmitter can be used to perform all the transmission operations performed by the terminal device in the embodiment shown in FIG. 8, and the receiver is used for After completing 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. 8.

It should be understood that the communication device 1500 or the communication device 1600 according to the embodiment of the present application can realize the function of the terminal device in the embodiment shown in FIG. 8, and the operation and/or function of each module in the communication device 1500 or the communication device 1600 In order to realize the corresponding processes in the embodiment shown in FIG. 8 respectively, for the sake of brevity, details are not described herein again.

FIG. 17 is a schematic block diagram of a communication device 1700 according to an embodiment of the application. Exemplarily, the communication device 1700 is, for example, a communication device 1700. Alternatively, the communication device 1700 is, for example, a chip in a communication device, or a combination device or component in the communication device that has the functions of the aforementioned network device, or the like. Exemplarily, the 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, which may include an antenna and a radio frequency circuit, and the processing module 1710 may be a processor, such as a baseband processor. The baseband processor may include one or more central processing units. Unit (central processing unit, CPU). When the network device 1700 is a component with the foregoing network function, the transceiver module 1720 may be a radio frequency unit, and the processing module 1710 may be a processor. When the network device 1700 is a chip system, the transceiver module 1720 may be an input/output interface of a chip system (such as 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 1710 may be used to perform all the operations performed by the network device in the embodiment shown in FIG. 8 except for the transceiving operations, such as S81 and S85, and/or other operations used to support the technology described herein. process. The transceiver module 1720 may be used to perform all the transceiver operations performed by the network device in the embodiment shown in FIG. 8, such as S82, S83, S84, and S86, and/or other processes used to support the technology described herein.

In addition, the transceiver module 1720 may be a functional module that can perform both sending operations and receiving operations. For example, the transceiver module 1720 may be used to perform all the sending operations performed by the network device in the embodiment shown in FIG. 8 And receiving operations. For example, when performing a sending operation, the transceiver module 1720 can be considered as a sending module, and when performing a receiving operation, the transceiver module 1720 can be considered as a receiving module; or, the transceiver module 1720 can also be a combination of two functional modules. Collectively, these two functional modules are the sending module and the receiving module. The sending module is used to complete the sending operation. For example, the sending module can be used to perform all the sending operations performed by the network device in the embodiment shown in FIG. 8. The receiving module For completing the receiving operation, for example, the receiving module may be used to perform all the receiving operations performed by the network device in the embodiment shown in FIG. 8.

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

The processing module 1710 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 to be used in a first cell, and the first The channel bandwidth is less than or equal to the third channel bandwidth included in the set of channel bandwidths supported by the terminal device;

The 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 optional implementation,

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

The 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 the network device 1700 in the first cell .

As an optional implementation,

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

As an optional implementation manner, the first channel bandwidth is greater than or equal to the bandwidth of the initial BWP.

It should be understood that the processing module 1710 in the embodiment of the present application may be implemented by a processor or processor-related circuit components, and the transceiver module 1720 may be implemented by a transceiver or transceiver-related circuit components.

As shown in FIG. 18, an embodiment of the present application also provides a communication device 1800. Exemplarily, the communication device 1800 is, for example, a communication device 1800. Alternatively, the communication device 1800 is, for example, a chip in a communication device, or a combination device or component having the function of the aforementioned network device in the communication device, or the like. Exemplarily, the communication device is, for example, a network device, or may also be a chip system or the like. The communication device 1800 includes a processor 1810, a memory 1820, and a transceiver 1830. The memory 1820 stores instructions or programs, and the processor 1810 is configured to execute instructions or programs stored in the memory 1820. When the instructions or programs stored in the memory 1820 are executed, the processor 1810 is used to perform the operations performed by the processing module 1710 in the foregoing embodiment, and the transceiver 1830 is used to perform the operations performed by the transceiver module 1720 in the foregoing embodiment.

Among them, the transceiver 1830 may be a functional unit that can complete both sending and receiving operations. For example, the transceiver 1830 can be used to perform all the sending operations performed by the network device in the embodiment shown in FIG. 8 And receiving operations. For example, when performing a sending operation, the transceiver 1830 can be considered as a transmitter, and when performing a receiving operation, the transceiver 1830 can be considered as a receiver; or, the transceiver 1830 can also be a two-function unit. Collectively, these two functional units are a transmitter and a receiver. The transmitter is used to complete the transmission operation. For example, the transmitter can be used to perform all the transmission operations performed by the network device in the embodiment shown in FIG. 8, and the receiver is used for To complete the receiving operation, for example, the receiver may be used to perform all the receiving operations performed by the network device in the embodiment shown in FIG. 8.

It should be understood that the communication device 1700 or the communication device 1800 according to the embodiment of the present application can realize the function of the network device in the embodiment shown in FIG. 8, and the operation and/or function of each module in the communication device 1700 or the communication device 1800 In order to realize the corresponding processes in the embodiment shown in FIG. 8 respectively, for the sake of brevity, details are not described herein again.

The embodiment of the present application also provides a communication device, which may be a terminal device or a circuit. The communication device may be used to perform the actions performed by the terminal device in the foregoing method embodiments.

When the communication device is a terminal device, FIG. 19 shows a simplified structural diagram of the terminal device. It is easy to understand and easy to illustrate. In Fig. 19, the terminal device uses a mobile phone as an example. As shown in Figure 19, the terminal equipment includes a processor, a memory, a radio frequency circuit, an antenna, and an input and output device. The processor is mainly used to process the communication protocol and communication data, and to control the terminal device, execute the software program, and process the data of the software program. The memory is mainly used to store software programs and data. The radio frequency circuit is mainly used for the conversion of baseband signal and radio frequency signal and the processing of radio frequency signal. The antenna is mainly used to send and receive radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, and keyboards, are mainly used to receive data input by users and output data to users. It should be noted that some types of terminal devices may not have input and output devices.

When data needs to be sent, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit. The radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal to the outside in the form of electromagnetic waves through the antenna. When data is sent to the terminal device, the radio frequency circuit receives the 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 description, only one memory and processor are shown in FIG. 19. In actual terminal equipment products, 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. The memory may be set independently of the processor, or may be integrated with the processor, which is not limited in the embodiment of the present application.

In the embodiments of the present application, the antenna and radio frequency circuit with the transceiving function can be regarded as the transceiving unit of the terminal device, and the processor with the processing function can be regarded as the processing unit of the terminal device. As shown in FIG. 19, the terminal device includes a transceiver unit 1910 and a processing unit 1920. The transceiver unit may also be referred to as a transceiver, a transceiver, a transceiver, and so on. The processing unit may also be called a processor, a processing board, a processing module, a processing device, and so on. Optionally, the device for implementing the receiving function in the transceiver unit 1910 can be regarded as the receiving unit, and the device for implementing the sending function in the transceiver unit 1910 as the sending unit, that is, the transceiver unit 1910 includes a receiving unit and a sending unit. The transceiver unit may sometimes be called a transceiver, a transceiver, or a transceiver circuit. The receiving unit may sometimes be called a receiver, receiver, or receiving circuit. The transmitting unit may sometimes be called a transmitter, a transmitter, or a transmitting circuit.

It should be understood that the transceiving unit 1910 is used to perform sending and receiving operations on the terminal device side in the foregoing method embodiment, and the processing unit 1920 is used to perform other operations on the terminal device in the foregoing method embodiment except for the transceiving operation.

For example, in one implementation, the transceiver unit 1910 is used to perform all the sending operations and receiving operations of the terminal device in the embodiment shown in FIG. 4, such as S41 and S45, and/or the transceiver unit 1910 is also used to perform support for this text. Other processes of the described technique. The processing unit 1920 is configured to perform all operations performed by the terminal device in the embodiment shown in FIG. 4 except for the transceiving operations, such as S42 to S44, and/or the processing unit 1920 is also configured to perform and support the operations described herein Other processes of technology.

For another example, in another implementation manner, the transceiver unit 1910 is used to perform all the sending operations and receiving operations of the terminal device in the embodiment shown in FIG. 5, such as S52, and/or the transceiver unit 1910 is also used to perform support Other processes of the described technique. The processing unit 1920 is used to perform all operations performed by the terminal device in the embodiment shown in FIG. 5 except for the receiving and sending operations, such as S51 and S53, and/or the processing unit 1920 is also used to perform and support the operations described herein Other processes of technology.

For another example, in still another implementation manner, the transceiver unit 1910 is used to perform all the sending and receiving operations of the terminal device in the embodiment shown in FIG. 7, such as S72 and S74, and/or the transceiver unit 1910 is also used to perform Other processes that support the technology described in this article. The processing unit 1920 is used to perform all operations performed by the terminal device in the embodiment shown in FIG. 7 except for receiving and sending operations, such as S71 and S73, and/or the processing unit 1920 is also used to perform and support the operations described herein Other processes of technology.

For another example, in still another implementation manner, the transceiver unit 1910 is configured to perform all the sending and receiving operations of the terminal device in the embodiment shown in FIG. 8, such as S82, S83, S84, and S86, and/or the transceiver unit 1910 It is also used to perform other processes that support the technology described herein. The processing unit 1920 is used to perform all operations performed by the terminal device in the embodiment shown in FIG. 8 except for the transceiving operation, such as S87 and S88, and/or the processing unit 1920 is also used to perform the support described herein Other processes of technology.

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

When the communication device in this embodiment is a terminal device, the device shown in FIG. 20 can be referred to. As an example, the device can perform functions similar to the processor 910 in FIG. 9. Or, as an example, the device can perform functions similar to the processor 1110 in FIG. 11. Or, as an example, the device may perform functions similar to the processor 1310 in FIG. 13. Or, as an example, the device can perform functions similar to the processor 1510 in FIG. 15. In FIG. 20, the device includes a processor 2010, a sending data processor 2020, and a receiving data processor 2030. The processing module 910 in the foregoing embodiment may be the processor 2010 in FIG. 20 and complete corresponding functions; the transceiving module 920 in the foregoing embodiment may be the sending data processor 2020 in FIG. 20, and/or receiving data Processor 2030. Alternatively, the processing module 1110 in the foregoing embodiment may be the processor 2010 in FIG. 20 and complete corresponding functions; the transceiving module 1120 in the foregoing embodiment may be the sending data processor 2020 in FIG. 20, and/or Receive data processor 2030. Alternatively, the processing module 1310 in the foregoing embodiment may be the processor 2010 in FIG. 20 and complete corresponding functions; the transceiver module 1320 in the foregoing embodiment may be the sending data processor 2020 in FIG. 20, and/or Receive data processor 2030. Alternatively, the processing module 1510 in the foregoing embodiment may be the processor 2010 in FIG. 20 and complete corresponding functions; the transceiver module 1520 in the foregoing embodiment may be the sending data processor 2020 in FIG. 20, and/or Receive data processor 2030. Although a channel encoder and a channel decoder are shown in FIG. 20, it can be understood that these modules do not constitute a restrictive description of this embodiment, and are only illustrative.

Fig. 21 shows another form of this embodiment. The processing device 2100 includes modules such as a modulation subsystem, a central processing subsystem, and a peripheral subsystem. The communication device in this embodiment can be used as a modulation subsystem therein. Specifically, the modulation subsystem may include a processor 2103 and an interface 2104. Among them, the processor 2103 completes the function of the aforementioned processing module 910, and the interface 2104 completes the function of the aforementioned transceiver module 920. Alternatively, the processor 2103 completes the function of the aforementioned processing module 1110, and the interface 2104 completes the function of the aforementioned transceiver module 1120. Alternatively, the processor 2103 completes the function of the aforementioned processing module 1310, and the interface 2104 completes the function of the aforementioned transceiver module 1320. Alternatively, the processor 2103 completes the function of the aforementioned processing module 1510, and the interface 2104 completes the function of the aforementioned transceiver module 1520. As another variation, the modulation subsystem includes a memory 2106, a processor 2103, and a program stored on the memory 2106 and running on the processor. The processor 2103 executes the program on the terminal device side in the above method embodiment. Methods. It should be noted that the memory 2106 can be non-volatile or volatile, and its location can be located inside the modulation subsystem or in the processing device 2100, as long as the memory 2106 can be connected to the The processor 2103 is fine.

When the device in the embodiment of the present application is a network device, the device may be as shown in FIG. 22. The device 2200 includes one or more radio frequency units, such as a remote radio unit (RRU) 2210 and one or more baseband units (BBU) (also referred to as digital unit, digital unit, DU) 2220 . The RRU 2210 may be called a transceiver module, which corresponds to the transceiver module 1710 in FIG. 17. Optionally, the transceiver module may also be called a transceiver, a transceiver circuit, or a transceiver, etc., which may include at least one antenna 2211和RF unit 2212. The RRU 2210 is mainly used for receiving and sending radio frequency signals and converting radio frequency signals and baseband signals, for example, for sending instruction information to terminal equipment. The 2210 part of the BBU is mainly used to perform baseband processing and control the base station. The RRU 2210 and the BBU 2220 may be physically set together, or may be physically separated, that is, a distributed base station.

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

In an example, the BBU 2220 may be composed of one or more single boards, and multiple single boards may jointly support a radio access network with a single access standard (such as an LTE network), or support different access standards. Wireless access network (such as LTE network, 5G network or other networks). The BBU 2220 also includes a memory 2221 and a processor 2222. The memory 2221 is used to store necessary instructions and data. The processor 2222 is used to control the base station to perform necessary actions, for example, used to control the base station to execute the operation procedure of the network device in the foregoing method embodiment. The memory 2221 and the processor 2222 may serve one or more single boards. In other words, the memory and the processor can be set separately on each board. It can also be that multiple boards share the same memory and processor. In addition, necessary circuits can be provided on each board.

The embodiment of the present application also provides a communication system. The communication system may include at least one terminal device involved in the embodiment shown in FIG. 8 and a network device involved in the embodiment shown in FIG. 8 described above. The terminal device is, for example, the communication device 1500 in FIG. 15 or the communication device 1600 in FIG. 16, and the network device is, for example, the communication device 1700 in FIG. 17 or the communication device 1800 in FIG. 18. For example, the terminal device can be used to perform all 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 used to support this text Other processes of the described technique. The network device can be used to perform all operations performed by the network device in the embodiment shown in FIG. 8, such as S81-S86 in the embodiment shown in FIG. 8, and/or other processes used to support the technology described herein .

An embodiment of the present application also provides a computer-readable storage medium that stores a computer program. When the computer program is executed by a computer, the computer can implement the method shown in FIG. 4 provided by the foregoing method embodiment. The process related to the terminal device in the embodiment.

The embodiments of the present application also provide a computer-readable storage medium that stores a computer program. When the computer program is executed by a computer, the computer can implement the method shown in FIG. 5 provided by the foregoing method embodiment. The process related to the terminal device in the embodiment.

The embodiment of the present application also provides a computer-readable storage medium, the computer-readable storage medium stores a computer program, and when the computer program is executed by a computer, the computer can implement the method shown in FIG. The process related to the terminal device in the embodiment.

The embodiment of the present application also provides a computer-readable storage medium, the computer-readable storage medium stores a computer program, and when the computer program is executed by a computer, the computer can implement the method shown in FIG. The process related to the network device in the embodiment.

The embodiment of the present application also provides a computer program product storing a computer program. When the computer program is executed by a computer, the computer can execute the method of the terminal device in the method embodiment shown in FIG. 4.

The embodiment of the present application also provides a computer program product storing a computer program. When the computer program is executed by a computer, the computer can execute the method of the terminal device in the method embodiment shown in FIG. 5.

The embodiment of the present application also provides a computer program product storing a computer program. When the computer program is executed by a computer, the computer can execute the method of the terminal device in the method embodiment shown in FIG. 7.

The embodiment of the present application also provides a computer program product storing a computer program. When the computer program is executed by a computer, the computer can execute the method of the terminal device in the method embodiment shown in FIG. 8.

The embodiment of the present application also provides a computer program product storing a computer program. When the computer program is executed by a computer, the computer can execute the method of the network device in the method embodiment shown in FIG. 8.

It should be understood that the processor mentioned in the embodiments of this application may be a CPU, other general-purpose processors, digital signal processors (digital signal processors, DSP), application specific integrated circuits (ASICs), ready-made Field programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.

It should also be understood that the memory mentioned in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electronic Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory. The volatile memory may be random access memory (RAM), which is used as an external cache. By way of exemplary but not restrictive description, many forms of RAM are available, such as static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (synchlink DRAM, SLDRAM) ) And direct memory bus random access memory (direct rambus RAM, DR RAM).

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

It should be noted that the memories described herein are intended to include, but are not limited to, these and any other suitable types of memories.

It should be understood that, in the various embodiments of the present application, the size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, rather than corresponding to the embodiments of the present application. The implementation process constitutes any limitation.

A person of ordinary skill in the art may be aware that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

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

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

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

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

If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solution of this application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disk and other media that can store program code .

The above are only specific implementations of the application, but the scope of protection of the embodiments of the application is not limited thereto. Any person skilled in the art can easily think of changes within the technical scope disclosed in the embodiments of the application. Or replacement should be covered within the protection scope of the embodiments of this application. Therefore, the protection scope of the embodiments of the present application shall be subject to the protection scope of the claims.

Claims

A communication method, characterized in that it comprises:

Obtain first information, where the first information includes one or more of the second channel bandwidth or the set of bandwidths allowed by the control resource set 0 of the first cell, and the second channel bandwidth is from the The channel bandwidth obtained from the public configuration information of the first cell;

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

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

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

It is determined 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.
The method according to claim 2 or 3, wherein determining that the bandwidth of the initial BWP is not supported includes:

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

It is determined that there is no channel bandwidth less than or equal to the second channel bandwidth in the set of channel bandwidths supported by the terminal device.
The method according to claim 2 or 5, wherein determining that the second channel bandwidth is not supported includes:

It is determined that the second channel bandwidth does not meet the index parameter requirement of the radio frequency filter of the terminal device.
The method according to any one of claims 1 to 6, wherein the method further comprises:

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

The bandwidth of the initial BWP of the first cell, the bandwidth of the second channel, or the bandwidth allowed to be configured by the control resource set 0 of the first cell.
A communication method, characterized in that it comprises:

Obtain first information, where the first information includes one or more of the first channel bandwidth, the second channel bandwidth, or the bandwidth set allowed by the control resource set 0 of the first cell, and the first channel bandwidth Is the working channel bandwidth that the terminal device can use in the first cell, and the second channel bandwidth is the channel bandwidth obtained from the public configuration information of the first cell;

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

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

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

It is determined that the initial BWP bandwidth, the first channel bandwidth, and the second channel bandwidth are supported, and the terminal device determines to access the first cell.
The method according to claim 8 or 9, wherein determining the bandwidth supporting the initial BWP comprises:

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.
The method according to any one of claims 8 to 10, wherein determining the bandwidth supporting the initial BWP of the first cell comprises:

It is determined 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 method according to any one of claims 8 to 11, wherein determining the bandwidth supporting the initial BWP of the first cell comprises:

It is determined that the terminal device operating on the second channel bandwidth can meet the radio frequency index requirement corresponding to the second channel bandwidth.
The method according to any one of claims 8-12, wherein determining the bandwidth that supports the initial BWP comprises:

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 of the first cell.
The method according to claim 8 or 9, wherein determining to support the second channel bandwidth comprises:

It is determined 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 method according to claim 8, 9 or 14, wherein determining that the second channel bandwidth is supported includes:

It is determined that the terminal device operating on the second channel bandwidth can meet the radio frequency index requirement corresponding to the second channel bandwidth.
The method according to claim 9, wherein determining that the first channel bandwidth is supported comprises:

It is determined that there is a channel bandwidth equal to the first channel bandwidth in the set of channel bandwidths supported by the terminal device.
A communication device, characterized in that it comprises:

Memory, used to store instructions;

The processor is configured to execute instructions stored in the memory to obtain first information, and, based on the bandwidth of the initial BWP of the first cell and the first information, determine not to access the first cell, and the first The information includes one or more of the second channel bandwidth or the set of bandwidths allowed to be configured in the control resource set 0 of the first cell, and the second channel bandwidth is obtained from the public configuration information of the first cell The channel bandwidth.
The communication device according to claim 17, wherein the processor is configured to determine not to access the first cell based on the bandwidth of the initial BWP of the first cell and the first information in the following manner:

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

Determine not to access the first cell.
The communication device according to claim 18, wherein the processor is configured to determine that the bandwidth of the initial BWP is not supported by:

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

It is determined that the bandwidth of the initial BWP is different from any bandwidth included in the bandwidth set allowed by the control resource set 0 of the first cell.
The communication device according to claim 19, wherein the processor 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 in the set of channel bandwidths supported by the communication device.
The communication device according to claim 19 or 21, wherein the processor is configured to determine that the second channel band is not supported by:

It is determined that the second channel bandwidth does not meet the index parameter requirement of the radio frequency filter of the communication device.
The communication device according to any one of claims 17 to 22, wherein the communication device further comprises a transceiver for receiving instruction information from the network device, and the instruction information is used to indicate the communication The device uses one of the following or any combination of the following as a judgment condition for accessing the first cell:

The bandwidth of the initial BWP of the first cell, the bandwidth of the second channel, or the bandwidth allowed to be configured by the control resource set 0 of the first cell.
A communication device, characterized in that it comprises:

Memory, used to store instructions;

The processor is configured to execute instructions stored in the memory to obtain first information, and, based on the bandwidth of the initial BWP of the first cell and the first information, determine to access the first cell or determine to support the first cell The bandwidth of the initial BWP, the first information includes one or more of the first channel bandwidth, the second channel bandwidth, or the bandwidth set allowed by the control resource set 0 of the first cell, and the first channel The bandwidth is the working channel bandwidth that the communication device can use in the first cell, and the second channel bandwidth is the channel bandwidth obtained from the common configuration information of the first cell.
The communication device according to claim 24, wherein the processor is configured to determine to access the first cell based on the bandwidth of the initial BWP of the first cell and the first information in the following manner:

Determine to support the initial BWP bandwidth and the first channel bandwidth, and determine to access the first cell; or,

Determine to support the initial BWP bandwidth and the second channel bandwidth, and determine to access the first cell; or,

Determine to support the initial BWP bandwidth, the first channel bandwidth, and the second channel bandwidth, and determine to access the first cell.
The communication device according to claim 24 or 25, wherein the processor is configured to determine the bandwidth supporting the initial BWP in the following manner:

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 communication device.
The communication device according to any one of claims 24 to 26, wherein the processor is configured to determine the bandwidth supporting the initial BWP of the first cell in the following manner:

It is determined that there is a channel bandwidth less than or equal to the second channel bandwidth in the set of channel bandwidths supported by the communication device.
The communication device according to any one of claims 24 to 27, wherein the processor is configured to determine the bandwidth supporting the initial BWP of the first cell in the following manner:

It is determined that the communication device operating on the second channel bandwidth can meet the radio frequency index requirement corresponding to the second channel bandwidth.
The communication device according to any one of claims 24 to 28, wherein the processor is configured to determine the bandwidth supporting the initial BWP in the following manner, comprising:

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 of the first cell.
The communication device according to claim 28 or 29, wherein the processor is configured to determine to support the second channel bandwidth in the following manner:

It is determined that there is a channel bandwidth less than or equal to the second channel bandwidth in the set of channel bandwidths supported by the communication device.
The communication device according to claim 24, 25 or 30, wherein the processor is configured to determine to support the second channel bandwidth in the following manner:

It is determined that the communication device operating on the second channel bandwidth can meet the radio frequency index requirement corresponding to the second channel bandwidth.
The communication device according to claim 31, wherein the processor is configured to determine to support the first channel bandwidth in the following manner:

It is determined that there is a channel bandwidth equal to the first channel bandwidth in the set of channel bandwidths supported by the communication device.
A computer-readable storage medium, wherein the computer-readable storage medium is used to store a computer program, and when the computer program runs on a computer, the computer executes any one of claims 1-7. Or make the computer execute the method according to any one of claims 8-16.
A communication system, characterized in that the communication system includes the communication device according to any one of claims 17 to 32.