Method, terminal device, and network device for data transmission

Abstract

The present application provides a data transmission method, including: a terminal device receives first control information sent by a network device, where the first control information is used to indicate configuration information of the terminal device or BWP switching information for indicating the terminal device to perform BWP switching; when the first control information indicates the configuration information, the terminal device performs information configuration according to the configuration information; when the first control information indicates the BWP switching information, the terminal device performs BWP switching according to the BWP switching information. According to the data transmission method provided by the embodiments of the present application, the terminal device can obtain the configuration information or BWP switching information only by detecting the first control information, avoiding the problem of high power consumption caused by the terminal device detecting multiple formats of DCI or continuously turning on detection within a timing period.

Description

Technical Field

[0001] The present application relates to the field of communications, and more particularly, to a method for data transmission, a terminal device, and a network device. Background Art

[0002] The fifth-generation (5G) mobile communication technology new radio (NR) is a global 5G standard based on a brand-new air interface design of orthogonal frequency division multiplexing (OFDM), and is also the basis for the next-generation very important cellular mobile technology. The services of 5G technology are very diverse, including services for enhanced mobile broadband (eMBB), ultra-reliability low-latency communication (URLLC), and massive machine-type communication (mMTC).

[0003] Machine communication is one of the bases for the Internet of Everything. For machine communication services, the standby time of a terminal device is an important aspect of the user experience. Generally speaking, the longer the standby time of a terminal device, the longer the available time of the terminal device, which is equivalent to the lower the cost paid by the user when using the terminal device. In addition, in some machine communication scenarios, such as devices like water meters installed in basements, it is not suitable to replace the power supply device. In this case, it is even more necessary to ensure the standby time of the terminal device. Therefore, from the perspective of user experience, reducing the power consumption of the terminal device and ensuring the standby time of the terminal device are of great significance in communication research.

[0004] At present, in order to ensure the performance of data transmission, the data transmission between a terminal device and a network device can be carried out on different bandwidth parts (BWPs). However, in order to simplify the implementation complexity of the terminal device, the terminal device and the network device can only perform data transmission on one active BWP at each moment during the data transmission process, so that the terminal device needs to switch between different BWPs to ensure the performance of data transmission. There are mainly two ways to indicate the BWP switching of the terminal device currently adopted: (1) The terminal device obtains the information related to BWP switching by detecting two formats of downlink control information (DCI), that is, in addition to detecting the fallback DCI (FB DCI) that the terminal device generally needs to detect, it also needs to detect the non-fallback DCI (non-FB DCI) including the BWP switching information; (2) The terminal device continuously detects the control information on the current BWP within a certain timing time. When the control information cannot be detected within this timing time, the terminal device determines to perform BWP switching.

[0005] However, method (1) requires the terminal device to detect multiple DCI formats, and method (2) requires the terminal device to continuously detect the control information within the timing time. Both of these methods will increase the power consumption of the terminal device during BWP switching and result in a relatively high latency when the terminal device performs BWP switching.

[0006] Therefore, for machine communication, how to reduce the power consumption of the terminal device during BWP switching and thus ensure the standby time of the terminal device is an issue that needs to be considered in machine communication research. Summary of the Invention

[0007] This application provides a data transmission method, a terminal device and a network device, which can solve the problem of large power consumption caused by the terminal device during BWP switching.

[0008] In a first aspect, a data transmission method is provided, including: The terminal device receives first control information sent by the network device, where the first control information is used to indicate the configuration information for the terminal device to perform data transmission or the BWP switching information for the terminal device to perform bandwidth part BWP switching; when the first control information is used to indicate the configuration information, the terminal device performs data transmission according to the configuration information; when the first control information is used to indicate the BWP switching information, the terminal device performs BWP switching according to the BWP switching information.

[0009] According to the data transmission method provided by the embodiments of the present application, the first control information can be used to indicate the configuration information for the terminal device to perform data transmission, and can also be used to indicate the terminal device to perform band switching. That is, the terminal device can read only one format of DCI (i.e., the first control information), and can perform data transmission or band switching according to the content of the first control information, without reading multiple DCI formats, reducing the power consumption of the terminal device and the delay of the terminal device for band switching.

[0010] In combination with the first aspect, in some implementation manners of the first aspect, the first control information is used to indicate the configuration information for the terminal device to perform data transmission or the BWP switching information for the terminal device to perform BWP switching, including: the first control information includes K bits, and the first control information corresponds to one state information among the 2 K kinds of state information corresponding to the K bits, where K is a positive integer; among them, X state information among the 2 K kinds of state information is used to indicate the configuration information, and Y state information among the 2 K kinds of state information is used to indicate the BWP switching information, the X state information and the Y state information are all different, and X and Y are positive integers and X + Y ≤ 2 K .

[0011] It can be understood that if the first control information includes K bits, then in a binary manner, the first control information can correspond to 2 K kinds of state information. Among the 2 K kinds of state information, X kinds of state information can be used to indicate the configuration information, and Y kinds of state information can be used to indicate the band switching information. Exemplarily, if the 2 K kinds of state information that the first control information may have are divided, the first X kinds of state information can be used to indicate the configuration information, and the Y kinds of state information arranged after the X kinds of state information can be used to indicate the band switching information. That is to say, the first control information can use its own specific state information to represent the configuration information or the band switching information.

[0012] For example, if the first control information has 2 bits, then in a binary manner, the first control information can correspond to 4 kinds of state information, such as 00, 01, 10, 11. Then, the first two kinds of state information (00 and 01) can be used to indicate the configuration information for the terminal device to perform data transmission. Since the last two kinds of state information (10 and 11) are different from the state information indicating the configuration information (00 and 01), it can be determined that 10 and 11 are used to indicate the band switching information, for example, indicating that the terminal device switches from the currently located band to other bands. At this time, it is realized that the first control information indicates the configuration information or the band switching information through its own different state information.

[0013] According to the data transmission method provided by the embodiments of the present application, the terminal device can obtain configuration information or band switching indication information without reading multiple DCI formats, and does not need to continuously detect control information within a timing duration to determine whether to perform band switching, thereby reducing the power consumption of the terminal device and the latency of performing band switching.

[0014] In combination with the first aspect, in some implementation manners of the first aspect, Y status information in the first control information is used to indicate first BWP switching information, and the first BWP switching information is used to indicate that the terminal device switches from a first BWP to a second BWP, where the second BWP is different from the first BWP; X status information in the first control information is used to indicate first configuration information, where the first configuration information is used for data transmission of the terminal device on the first BWP.

[0015] According to the data transmission method provided by the embodiments of the present application, the terminal device can obtain configuration information or band switching indication information without reading multiple DCI formats, and does not need to continuously detect control information within a timing duration to determine whether to perform band switching, thereby reducing the power consumption of the terminal device and the latency of performing band switching.

[0016] In combination with the first aspect, in some implementation manners of the first aspect, Y of the Y 1 status information is further used to indicate second configuration information, and the second configuration information is data transmission of the terminal device on the second BWP, where Y 1 is a positive integer.

[0017] According to the data transmission method provided by the embodiments of the present application, 2 K status information of the first control information may further include information for simultaneously indicating band switching information and configuration information on the second band after the terminal device switches to the second band. That is, the terminal device only needs to read one DCI format to receive configuration information or band switching information on the current band and switching information on the band after switching, reducing the power consumption of the terminal device and the latency of performing band switching.

[0018] In combination with the first aspect, in some implementation manners of the first aspect, Y of the Y 2 status information is further used to indicate the first configuration information, where Y 2 is a positive integer.

[0019] According to the data transmission method provided by the embodiments of the present application, 2 K status information of the first control information may further include Y for simultaneously indicating the first configuration information and band switching information 2a status information, that is, the terminal device can obtain the configuration information and the frequency band switching information on the currently located frequency band through the first control information at the same time, without reading multiple DCI formats, and without continuously detecting the control information within the timing duration to determine whether to perform a frequency band switching, reducing the power consumption of the terminal device and the delay of performing the frequency band switching.

[0020] Combined with the first aspect, in some implementation manners of the first aspect, the Y in the Y status information 3 status information is further used to indicate the second BWP switching information, and the second BWP switching information is used to indicate that the terminal device switches from the second BWP to the first BWP, where Y 3 is a positive integer.

[0021] According to the data transmission method provided by the embodiments of the present application, the 2 K status information of the first control information may further include Y 3 status information for indicating the second BWP switching information other than the foregoing configuration information and the frequency band switching information. At this time, the terminal device may, according to any one of the Y 3 status information, after switching from the first frequency band to the second frequency band, and then switch from the second frequency band to the first frequency band, without continuously detecting the control information within the timing duration to determine whether to perform a frequency band switching, reducing the power consumption of the terminal device and the delay of performing the frequency band switching.

[0022] Combined with the first aspect, in some implementation manners of the first aspect, the bandwidth of the first BWP is the minimum bandwidth required for the terminal device to obtain downlink data during the process of accessing the network device; or, the bandwidth of the first BWP is the minimum bandwidth required for the terminal device to perform data transmission with the network device.

[0023] Combined with the first aspect, in some implementation manners of the first aspect, the first BWP is the BWP corresponding to the terminal device receiving the necessary system information sent by the network device; or, the first BWP is the data channel or the control channel corresponding to the terminal device receiving the necessary system information sent by the network device; or, the bandwidth of the first BWP is less than or equal to the bandwidth of at least one second BWP, where the first BWP and the at least one second BWP are both BWPs configured by the network device for the terminal device.

[0024] Combined with the first aspect, in some implementation manners of the first aspect, the configuration information is the frequency resource allocation information corresponding to the terminal device performing data transmission with the network device.

[0025] It can be understood that the data transmission method provided by the embodiments of the present application, for indicating the status information of BWP switching and / or the second configuration information, can reuse the redundant status information of the Fall Back DCI. That is, the embodiments of the present application provide the band switching information or the second configuration information other than the basic configuration information, without the need to add new bits and status information in the first control information.

[0026] In a second aspect, a data transmission method is provided, including: a network device determines first control information, where the first control information is used to indicate configuration information for a terminal device to perform data transmission or BWP switching information for the terminal device to perform BWP switching; the network device sends the first control information to the terminal device.

[0027] According to the data transmission method provided by the embodiments of the present application, the first control information can be used to indicate both the configuration information for the terminal device to perform data transmission and the band switching for the terminal device. That is, the terminal device can only read one format of DCI (i.e., the first control information), and then perform data transmission or band switching according to the content of the first control information, without the need to read multiple DCI formats, reducing the power consumption of the terminal device and the latency of the terminal device for band switching.

[0028] In combination with the second aspect, in some implementation manners of the second aspect, the first control information is used to indicate the configuration information of the terminal device or the BWP switching information for the terminal device to perform BWP switching, including: the first control information includes K bits, and the first control information corresponds to one of the 2 K types of status information corresponding to the K bits, where K is a positive integer; among them, X of the 2 K types of status information are used to indicate the configuration information, and Y of the 2 K types of status information are used to indicate the BWP switching information, the X types of status information and the Y types of status information are all different, and X and Y are positive integers and X + Y ≤ 2 K .

[0029] It can be understood that if the first control information includes K bits, then in a binary manner, the possible states of the first control information are 2 K types of status information. Among these 2 K types of status information, X types of status information can be used to indicate the configuration information, and Y types of status information can be used to indicate the band switching information. Exemplarily, if the 2 KIf the state information is divided, the first X pieces of state information can be used to indicate configuration information, and the Y pieces of state information after the X pieces of state information can be used to indicate band switching information. That is to say, the first control information can use its specific state information to represent configuration information or band switching information.

[0030] For example, if the first control information has 2 bits, then through binary, the first control information can have 4 states, such as 00, 01, 10, 11. Then 00 and 01 can be used to indicate the configuration information for the terminal device to perform data transmission. Since 10 and 11 are different from the states (00 and 01) indicating configuration information, it can be determined that 10 and 11 are used to indicate band switching information, such as indicating that the terminal device switches from the currently located band to other bands. At this time, the first control information realizes indicating configuration information or band switching information through its different state information.

[0031] According to the data transmission method provided by the embodiments of the present application, the terminal device does not need to read multiple DCI formats to obtain configuration information or indication information for band switching, nor does it need to continuously detect control information within a timing duration to determine whether to perform band switching, thereby reducing the power consumption of the terminal device and the delay of performing band switching.

[0032] In combination with the second aspect, in some implementation manners of the second aspect, Y state information in the first control information is used to indicate first BWP switching information, and the first BWP switching information is used to indicate that the terminal device switches from the first BWP to the second BWP, where the first BWP is different from the second BWP; X state information in the first control information is used to indicate first configuration information, and the first configuration information is used for the terminal to perform data transmission on the first BWP.

[0033] According to the data transmission method provided by the embodiments of the present application, the terminal device does not need to read multiple DCI formats to obtain configuration information or indication information for band switching, nor does it need to continuously detect control information within a timing duration to determine whether to perform band switching, thereby reducing the power consumption of the terminal device and the delay of performing band switching.

[0034] In combination with the second aspect, in some implementation manners of the second aspect, Y of the Y state information 1 pieces of state information are further used to indicate second configuration information, and the second configuration information is used for the terminal device to perform data transmission on the second BWP, where Y 1 is a positive integer.

[0035] According to the data transmission method provided by the embodiments of the present application, 2 of the first control information KThe state information may further include information for simultaneously indicating the band switching information and the configuration information of the terminal device on the second band after switching to the second band. That is, the terminal device can receive the configuration information on the current band, the band switching information, and the switching information on the band after switching by reading only one DCI format, which reduces the power consumption of the terminal device and the latency of band switching.

[0036] Combined with the second aspect, in some implementation manners of the second aspect, the Y state information among the Y state information is further used to indicate the first configuration information, where Y 2 state information is further used to indicate the first configuration information, where Y 2 is a positive integer.

[0037] According to the data transmission method provided by the embodiments of the present application, the 2 K state information of the first control information may further include Y 2 state information for simultaneously indicating the first configuration information and the band switching information. That is, the terminal device can obtain the configuration information on the current band and the band switching information through the first control information at the same time, without reading multiple DCI formats, and without continuously detecting the control information within the timing duration to determine whether to perform band switching, which reduces the power consumption of the terminal device and the latency of band switching.

[0038] Combined with the second aspect, in some implementation manners of the second aspect, the Y state information among the Y state information is further used to indicate the second BWP switching information, and the second BWP switching information is used to indicate that the terminal device switches from the second BWP to the first BWP, where Y 3 state information is further used to indicate the second BWP switching information, and the second BWP switching information is used to indicate that the terminal device switches from the second BWP to the first BWP, where Y 3 is a positive integer.

[0039] According to the data transmission method provided by the embodiments of the present application, the 2 K state information of the first control information may further include Y 3 state information for indicating the second BWP switching information other than the foregoing configuration information and the band switching information. At this time, the terminal device can switch from the first band to the second band and then from the second band to the first band according to any one of the Y 3 state information, without continuously detecting the control information within the timing duration to determine whether to perform band switching, which reduces the power consumption of the terminal device and the latency of band switching.

[0040] Combined with the second aspect, in some implementation manners of the second aspect, the bandwidth of the first BWP is the minimum bandwidth required to obtain downlink data during the process of the terminal device accessing the network device; or,

[0041] The bandwidth of the first BWP is the minimum bandwidth required to satisfy data transmission between the terminal device and the network device.

[0042] In combination with the second aspect, in some implementation manners of the second aspect, the first BWP is the BWP corresponding to the necessary system information sent by the network device to the terminal device; or, the first BWP is the BWP corresponding to the data channel or control channel used by the terminal device to receive the necessary system information sent by the network device; or, the bandwidth of the first BWP is less than or equal to the bandwidth of at least one second BWP, where the first BWP and the at least one second BWP are both BWPs configured by the network device for the terminal device.

[0043] In combination with the second aspect, in some implementation manners of the second aspect, the configuration information is frequency resource allocation information corresponding to data transmission between the terminal device and the network device.

[0044] It can be understood that the data transmission method provided in the embodiments of the present application, the status information used to indicate BWP switching and / or the second configuration information can be the redundant status information of the reuse fallback (Fall Back) DCI, that is, the embodiments of the present application provide frequency band switching information or second configuration information other than the basic configuration information, and there is no need to add new bits and status information in the first control information.

[0045] In a third aspect, a terminal device is provided, including at least one processor and a communication interface, where the communication interface is used for the terminal device to interact with a network device, and when program instructions are executed in the at least one processor, the terminal device implements the method described in any implementation manner of the first aspect.

[0046] In a fourth aspect, a network device is provided, including at least one processor and a communication interface, where the communication interface is used for the network device to interact with a terminal device, and when program instructions are executed in the at least one processor, the network device implements the method described in any implementation manner of the second aspect.

[0047] In a fifth aspect, a terminal device is provided, including: a receiving module, configured to receive first control information sent by a network device, where the first control information is used to indicate configuration information for the terminal device to perform data transmission or BWP switching information for indicating BWP switching of the terminal device; a processing module, configured to perform data transmission according to the configuration information when the first control information is used to indicate the configuration information; the processing module is further configured to perform BWP switching according to the BWP switching information when the first control information is used to indicate the BWP switching information.

[0048] In combination with the fifth aspect, in some implementations of the fifth aspect, the first control information is used to indicate the configuration information for data transmission of the terminal device or the BWP switching information for instructing the terminal device to perform BWP switching, including: the first control information includes K bits, and the first control information corresponds to one state information among the 2 K types of states corresponding to the K bits, where K is a positive integer; among them, X state information among the 2 K types of states is used to indicate the configuration information, and Y state information among the 2 K types of states is used to indicate the BWP switching information, the X state information and the Y state information are all different, and X and Y are positive integers and X + Y ≤ 2 K .

[0049] It can be understood that if the first control information includes K bits, then in a binary manner, the first control information can correspond to 2 K types of state information. Among the 2 K types of state information, X types of state information can be used to indicate the configuration information, and Y types of state information can be used to indicate the frequency band switching information. Exemplarily, if the 2 K types of state information that the first control information may have are divided, then the first X types of state information can be used to indicate the configuration information, and the Y types of state information arranged after the X types of state information can be used to indicate the frequency band switching information. That is to say, the first control information can use its own specific state information to represent the configuration information or the frequency band switching information.

[0050] For example, if the first control information has 2 bits, then in a binary manner, the first control information can correspond to 4 types of state information, such as 00, 01, 10, 11. Then, the first two types of state information (00 and 01) can be used to indicate the configuration information for data transmission of the terminal device, and since the last two types of state information (10 and 11) are different from the state information indicating the configuration information (00 and 01), it can be determined that 10 and 11 are used to indicate the frequency band switching information, for example, indicating that the terminal device switches from the currently located frequency band to other frequency bands. At this time, it is realized that the first control information indicates the configuration information or the frequency band switching information through its own different state information.

[0051] According to the data transmission method provided by the embodiments of the present application, the terminal device does not need to read multiple DCI formats to obtain the configuration information or the indication information of the frequency band switching, nor does it need to continuously detect the control information within a timing duration to determine whether to perform the frequency band switching, thereby reducing the power consumption of the terminal device and the latency of the frequency band switching.

[0052] In combination with the fifth aspect, in some implementations of the fifth aspect, Y status information in the first control information is used to indicate first BWP switching information, and the first BWP switching information is used to indicate that the terminal device switches from a first BWP to a second BWP, where the second BWP is different from the first BWP; X status information in the first control information is used to indicate first configuration information, where the first configuration information is used for data transmission of the terminal device on the first BWP.

[0053] According to the data transmission method provided by the embodiments of the present application, the terminal device can obtain configuration information or band switching indication information without reading multiple DCI formats, and does not need to continuously detect control information within a timing duration to determine whether to perform band switching, thereby reducing the power consumption of the terminal device and the delay of performing band switching.

[0054] In combination with the fifth aspect, in some implementations of the fifth aspect, Y of the Y 1 status information is further used to indicate second configuration information, and the second configuration information is data transmission of the terminal device on the second BWP, where Y 1 is a positive integer.

[0055] According to the data transmission method provided by the embodiments of the present application, 2 K status information of the first control information may further include information for simultaneously indicating band switching information and configuration information of the terminal device on the second band after switching to the second band. That is, the terminal device only needs to read one DCI format to receive configuration information or band switching information on the current band and switching information on the band after switching, reducing the power consumption of the terminal device and the delay of performing band switching.

[0056] In combination with the fifth aspect, in some implementations of the fifth aspect, Y of the Y 2 status information is further used to indicate the first configuration information, where Y 2 is a positive integer.

[0057] According to the data transmission method provided by the embodiments of the present application, 2 K status information of the first control information may further include Y 2 status information for simultaneously indicating the first configuration information and band switching information. That is, the terminal device can obtain configuration information and band switching information on the current band through the first control information at the same time, without reading multiple DCI formats and without continuously detecting control information within a timing duration to determine whether to perform band switching, reducing the power consumption of the terminal device and the delay of performing band switching.

[0058] In combination with the fifth aspect, in some implementations of the fifth aspect, the Y in the Y status information 3 status information is also used to indicate second BWP switching information, and the second BWP switching information is used to indicate that the terminal device switches from the second BWP to the first BWP, where Y 3 is a positive integer.

[0059] According to the data transmission method provided by the embodiments of the present application, among the 2 K status information of the first control information, there may also be included Y 3 status information for indicating second BWP switching information other than the foregoing configuration information and frequency band switching information. At this time, the terminal device may, according to any one of the Y 3 status information, after switching from the first frequency band to the second frequency band, then switch from the second frequency band to the first frequency band, without continuously detecting control information within a timing duration to determine whether to perform a frequency band switch, reducing the power consumption of the terminal device and the latency of performing a frequency band switch.

[0060] In combination with the fifth aspect, in some implementations of the fifth aspect, the bandwidth of the first BWP is the minimum bandwidth required for the terminal device to obtain downlink data during the process of accessing the network device; or, the bandwidth of the first BWP is the minimum bandwidth required for the terminal device to perform data transmission with the network device.

[0061] In combination with the fifth aspect, in some implementations of the fifth aspect, the first BWP is the BWP corresponding to the terminal device receiving necessary system information sent by the network device; or, the first BWP is the data channel or control channel corresponding to the terminal device receiving necessary system information sent by the network device; or, the bandwidth of the first BWP is less than or equal to the bandwidth of at least one second BWP, where the first BWP and the at least one second BWP are both BWPs configured by the network device for the terminal device.

[0062] In combination with the fifth aspect, in some implementations of the fifth aspect, the configuration information is frequency resource allocation information corresponding to data transmission between the terminal device and the network device.

[0063] It can be understood that for the data transmission method provided by the embodiments of the present application, the status information for indicating BWP switching and / or second configuration information may reuse the redundant status information of the Fall Back DCI, that is, the frequency band switching information or second configuration information provided by the embodiments of the present application other than the basic configuration information does not require adding new bits and status information in the first control information.

[0064] In a sixth aspect, a network device is provided, including: a processing module, configured to determine first control information, where the first control information is configuration information for instructing a terminal device to perform data transmission or BWP switching information for instructing the terminal device to perform BWP switching; and a sending module, configured to send the first control information to the terminal device.

[0065] In combination with the sixth aspect, in some implementation manners of the sixth aspect, the first control information for instructing the configuration information of the terminal device or the BWP switching information for instructing the terminal device to perform BWP switching includes: the first control information includes K bits, and the first control information corresponds to one of the 2 K state information corresponding to the K bits, where K is a positive integer; among them, X of the 2 K state information is used to indicate the configuration information, and Y of the 2 K state information is used to indicate the BWP switching information, the X state information and the Y state information are all different, and X and Y are positive integers and X + Y ≤ 2 K .

[0066] It can be understood that if the first control information includes K bits, then in a binary manner, there are 2 K possible state information for the first control information. Among the 2 K state information, X of them can be used to indicate the configuration information, and Y of them can be used to indicate the frequency band switching information. Exemplarily, if the 2 K possible state information that the first control information may have is divided, then the first X state information can be used to indicate the configuration information, and the Y state information after the X state information can be used to indicate the frequency band switching information. That is to say, the first control information can use its own specific state information to indicate the configuration information or the frequency band switching information.

[0067] For example, if the first control information has 2 bits, then in binary, the first control information can have 4 states, such as 00, 01, 10, 11. Then 00 and 01 can be used to indicate the configuration information for the terminal device to perform data transmission. Since 10 and 11 are different from the states (00 and 01) indicating the configuration information, it can be determined that 10 and 11 are used to indicate the frequency band switching information, for example, indicating that the terminal device switches from the currently located frequency band to another frequency band. At this time, it is realized that the first control information indicates the configuration information or the frequency band switching information through its own different state information.

[0068] According to the data transmission method provided by the embodiments of the present application, the terminal device can obtain configuration information or band switching indication information without reading multiple DCI formats, and does not need to continuously detect control information within a timing duration to determine whether to perform band switching, thereby reducing the power consumption of the terminal device and the delay of performing band switching.

[0069] In combination with the sixth aspect, in some implementation manners of the sixth aspect, Y status information in the first control information is used to indicate first BWP switching information, and the first BWP switching information is used to indicate that the terminal device switches from a first BWP to a second BWP, where the first BWP is different from the second BWP; X status information in the first control information is used to indicate first configuration information, and the first configuration information is used for data transmission of the terminal on the first BWP.

[0070] According to the data transmission method provided by the embodiments of the present application, the terminal device can obtain configuration information or band switching indication information without reading multiple DCI formats, and does not need to continuously detect control information within a timing duration to determine whether to perform band switching, thereby reducing the power consumption of the terminal device and the delay of performing band switching.

[0071] In combination with the sixth aspect, in some implementation manners of the sixth aspect, Y of the Y 1 status information is further used to indicate second configuration information, and the second configuration information is used for data transmission of the terminal device on the second BWP, where Y 1 is a positive integer.

[0072] According to the data transmission method provided by the embodiments of the present application, 2 K status information of the first control information may further include information for simultaneously indicating band switching information and configuration information on the second band after the terminal device switches to the second band. That is, the terminal device only needs to read one DCI format to receive configuration information on the current band, band switching information, and switching information on the band after switching, reducing the power consumption of the terminal device and the delay of performing band switching.

[0073] In combination with the sixth aspect, in some implementation manners of the sixth aspect, Y of the Y 2 status information is further used to indicate the first configuration information, where Y 2 is a positive integer.

[0074] According to the data transmission method provided by the embodiments of the present application, 2 K status information of the first control information may further include Y for simultaneously indicating the first configuration information and band switching information 2That is, the terminal device can simultaneously obtain the configuration information and frequency band switching information on the current frequency band through the first control information, without reading multiple DCI formats, and without continuously detecting the control information within a timing period to determine whether to switch the frequency band, thereby reducing the power consumption of the terminal device and the delay in switching the frequency band.

[0075] In conjunction with the sixth aspect, in certain implementations of the sixth aspect, Y of the Y pieces of status information 3 The state information is also used to indicate the second BWP switching information, and the second BWP switching information is used to indicate that the terminal device switches from the second BWP to the first BWP, wherein Y 3 Is a positive integer.

[0076] According to the data transmission method provided in the embodiment of the present application, the first control information 2 K The state information may also include a Y indicating a second BWP switching information in addition to the aforementioned configuration information and frequency band switching information. 3 Status information, at this time, the terminal device can 3 Any one of the status information, after switching from the first frequency band to the second frequency band, and then switching from the second frequency band to the first frequency band, there is no need to continuously detect the control information within the timing period to determine whether to switch the frequency band, thereby reducing the power consumption of the terminal device and the delay in switching the frequency band.

[0077] In combination with the sixth aspect, in some implementations of the sixth aspect, the bandwidth of the first BWP is a minimum bandwidth required for the terminal device to obtain downlink data during access to the network device; or,

[0078] The bandwidth of the first BWP is the minimum bandwidth required for data transmission between the terminal device and the network device.

[0079] In combination with the sixth aspect, in certain implementations of the sixth aspect, the first BWP is the BWP corresponding to the BWP used by the terminal device to receive the necessary system information sent by the network device; or, the first BWP is the BWP corresponding to the data channel or control channel used by the terminal device to receive the necessary system information sent by the network device; or, the bandwidth of the first BWP is less than or equal to the bandwidth of at least one second BWP, wherein the first BWP and the at least one second BWP are both BWPs configured by the network device to the terminal device.

[0080] In combination with the sixth aspect, in certain implementations of the sixth aspect, the configuration information is frequency resource allocation information corresponding to data transmission between the terminal device and the network device.

[0081] It can be understood that for the data transmission method provided in the embodiments of the present application, the status information used to indicate BWP switching and / or the second configuration information can be the redundant status information of the Fall Back DCI. That is, for the frequency band switching information or the second configuration information provided in the embodiments of the present application other than the basic configuration information, there is no need to add new bits and status information in the first control information.

[0082] In a seventh aspect, a computer program storage medium is provided. The computer storage medium has program instructions that, when directly or indirectly executed, enable the functions of the method described in any implementation manner of the first aspect or the second aspect to be implemented on a terminal device or a network device.

[0083] In an eighth aspect, a chip system is provided. The chip system includes at least one processor. When the program instructions are executed in the at least one processor, the functions of the method described in any implementation manner of the first aspect or the second aspect are enabled to be implemented on a terminal device or a network device.

[0084] In a ninth aspect, a communication system is provided. The communication system includes a terminal device and a network device. Among them, the terminal device is used to execute the method described in any implementation manner of the first aspect, and the network device is used to execute the method described in any implementation manner of the second aspect.

[0085] According to the data transmission method, terminal device and network device provided in the embodiments of the present application, by receiving the first control information sent by the network device that can be used to indicate the configuration information or the BWP switching information, the terminal device can obtain the configuration information or the BWP switching information only by detecting the first control information, avoiding the problem of high power consumption caused by the terminal device detecting multiple formats of DCI or continuously turning on the detection within the timing time. BRIEF DESCRIPTION OF THE DRAWINGS

[0086] Figure 1 A schematic diagram of a scenario applicable to the data transmission method provided in the embodiments of the present application is shown.

[0087] Figure 2 A schematic flowchart of a data transmission method provided in the embodiments of the present application is shown.

[0088] Figure 3 A schematic diagram of the representation of the configuration information and the BWP switching information in the first control information provided in the embodiments of the present application is shown.

[0089] Figure 4A schematic diagram showing another representation method of configuration information and BWP switching information in the first control information provided by an embodiment of the present application.

[0090] Figure 5 A schematic diagram showing yet another representation method of configuration information and BWP switching information in the first control information provided by an embodiment of the present application.

[0091] Figure 6 A schematic diagram showing yet another representation method of configuration information and BWP switching information in the first control information provided by an embodiment of the present application.

[0092] Figure 7 A schematic diagram showing yet another representation method of configuration information and BWP switching information in the first control information provided by an embodiment of the present application.

[0093] Figure 8 A schematic diagram of a synchronization signal block involved in the data transmission method provided by an embodiment of the present application.

[0094] Figure 9 A schematic structural diagram of a terminal device provided by an embodiment of the present application.

[0095] Figure 10 A schematic structural diagram of a network device provided by an embodiment of the present application.

[0096] Figure 11 A schematic structural diagram of a terminal device provided by an embodiment of the present application.

[0097] Figure 12 A schematic structural diagram of a network device provided by an embodiment of the present application. Detailed implementation manners

[0098] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0099] It can be understood that the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile Communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution system, Frequency Division Duplex (LTE FDD) system, Time Division Duplex (LTE TDD) system, Universal Mobile Telecommunications System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system, and future 5th generation (5G) system or New Radio (NR), etc. The embodiments of the present application are not limited thereto. The method provided in this embodiment can also be applied to communication systems, such as Vehicle to Everything (V2X), Long Term Evolution Vehicle (LTE-V), Vehicle to Vehicle (V2V) communication system, Manual Toll Collection System (MTC), Internet of Things (IoT), LTE-Machine to Machine (LTE-M), Machine to Machine (M2M), etc.

[0100] The user equipment (UE) in the embodiments of this application may refer to a terminal device, an access terminal, a user unit, a user station, a mobile station, a mobile device, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user device. The terminal device may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device with wireless communication capabilities, a computing device, or other processing devices connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G network, or a terminal device in a future evolved public land mobile network (PLMN). The embodiments of this application are not limited thereto.

[0101] In the embodiments of this application, the base station may be a base transceiver station (BTS) in GSM or CDMA, a Node B (NB) in WCDMA, an evolved Node B (eNodeB) in LTE, a gNB in 5G, or other network devices with base station functions. This application is not limited thereto.

[0102] In an embodiment of the present application, a user equipment, a relay equipment, or a network equipment includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. The hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and a memory (also referred to as main memory). The operating system can be any one or more computer operating systems that implement service processing through processes. For example, Linux operating system, Unix operating system, Android operating system, iOS operating system, or Windows operating system, etc. The application layer includes applications such as a browser, an address book, a word processing software, and an instant messaging software. Moreover, the embodiment of the present application does not particularly limit the specific structure of the execution subject of the method provided by the embodiment of the present application. As long as it can communicate according to the method provided by the embodiment of the present application by running a program recorded with the code of the method provided by the embodiment of the present application. For example, the execution subject of the method provided by the embodiment of the present application can be a terminal device or a network device, or a functional module in the terminal device or the network device that can call and execute the program.

[0103] In the existing NR system, regardless of the bandwidth capability of the terminal device, data transmission between the network device and the terminal device can be achieved by configuring a BWP. Each BWP is composed of frequency-continuous resource blocks (RBs), and one RB includes 12 subcarriers.

[0104] For a terminal device, in terms of implementation complexity, on one carrier, the network device can configure up to 4 BWPs for the terminal device. If the initial BWP is included, the terminal device can have up to 5 BWPs at most. Among them, the initial BWP can be considered as the BWP configured by the network device through the physical broadcast channel (PBCH). For example, the frequency resource range corresponding to the control resource set 0 (CORESET 0) configured by the network device through PBCH can correspond to the frequency resource range of the BWP.

[0105] In the prior art, to ensure the performance of data transmission, the data transmission between a terminal device and a network device can be carried out on different BWPs. However, to simplify the implementation complexity of the terminal device, at any given time, the data transmission between the terminal device and the network device can only be carried out on one active BWP. Thus, it is necessary to switch back and forth between different BWPs to ensure the performance of data transmission. Currently, the switching of BWPs can be achieved in the following manner. For ease of description, the following takes the data transmission between the network device and the terminal device switching from BWP A to BWP B as an example for illustration.

[0106] (1) Through scheduling DCI

[0107] In this manner, the scheduling DCI includes the indication information of the BWP. The scheduling DCI sent by the network device on BWP A can include the indication information of BWP B. After receiving this information, the terminal device conducts data transmission with the network device on BWP B, completing the switching of the BWP. Specifically, the scheduling DCI can be implemented through DCI format 01 or DCI format 11 and is sent through the physical downlink control channel (PDCCH).

[0108] It should be understood that in the prior art, for the specific data scheduling of the terminal device, the terminal device may need to detect two types of DCI formats. The number of control information bits included in the two DCI formats is different, or the sizes corresponding to the two DCI formats are different. Among them, the number of control information bits included in one DCI format is fixed, while the number of control information bits included in the other DCI format is variable, for example, it can vary according to the pre-configured information of the network device. For example, one DCI format includes control information bits related to the number of BWPs. When the number of BWPs configured by the network device for this terminal device is 2 or 4, the control information bits related to the number of BWPs can be 1 or 2. It can be seen that different pre-configured information of the network device will result in different DCI control information included in the DCI format. For ease of description, in the embodiments of the present application, the DCI format including a fixed number of control information bits is referred to as a fallback DCI (FB DCI), and the DCI format including a variable number of control information bits is referred to as a non-fallback DCI (non-FB DCI). Since the scheduling DCI for realizing the BWP switching includes information related to the BWP switching, it can be understood as one type of non-FB DCI.

[0109] It can be understood that generally, the terminal device will detect FB DCI. However, when the network device sends the indication information of band switching to the terminal device, it needs to send non-FB DCI to the terminal device. That is, when realizing BWP switching through DCI, the terminal device needs to detect two formats of DCI simultaneously, increasing the number of detections and thus increasing the power consumption of the terminal device.

[0110] (2) Through a timer

[0111] After the terminal device detects the control information on BWP A, it can start a timer. If the terminal device does not detect the control information on BWP A within the timing duration, it can switch to BWP B. Herein, BWP B can be understood as the initial BWP or the default BWP (default BWP), and the default BWP can be configured by the network device.

[0112] It can be understood that in this way, even if the network device will not send control information for this terminal device within the timer, the terminal device still needs to continuously detect the control information within the timer to determine whether to switch to BWP B. Since the terminal device needs to continuously detect the control information, the power consumption of the terminal device for detecting the control information will increase.

[0113] Regarding the problem of high power consumption of the terminal device for detecting control information caused by the above-mentioned method of realizing BWP switching through DCI or timer, the embodiment of the present application provides a data transmission method. By multiplexing the redundant status of the control information to indicate the band switching information, that is, the control information can indicate the configuration information or the control information for BWP switching, enabling the terminal device to perform information configuration or BWP switching by receiving one type of DCI, without detecting two formats of DCI and continuously detecting the control information within the timing time, thereby reducing the power consumption of the terminal device and increasing its standby time.

[0114] Figure 1 Fig. shows a schematic diagram of the scenario applicable to the data transmission method provided by the embodiment of the present application.

[0115] The data transmission method provided by the embodiment of the present application can be applicable to a wireless communication system, including a 45G or 5G wireless communication system, and further evolved systems based on LTE or NR, as well as future wireless communication systems. In addition, it can also be applied to a wireless communication system including terminal devices with low bandwidth capabilities. Among them, in the communication system where the data transmission method provided by the embodiment of the present application is used, the network device and the terminal device can be connected through the air interface.

[0116] It can be understood that the terminal device involved in the data transmission method provided in the embodiments of the present application may include a device that provides voice and / or data connectivity to a user. For example, it includes a handheld device with a wireless connection function or a processing device connected to a wireless modem. Exemplarily, the terminal device may be, for example, a terminal device supporting LTE communication, a terminal device supporting 5G communication, or a user equipment, etc. In addition, a relay device and any other device that can communicate data with a network device may be included in the terminal device described in the embodiments of the present application.

[0117] It can be understood that the network device involved in the data transmission method provided in the embodiments of the present application may include: an access network (AN) device, which may be, for example, a device that communicates with a wireless terminal device through one or more cells over the air interface of the access network. Exemplarily, the network device is, for example, a base station, including an LTE eNB, a home evolved NodeB (HeNB), a relay device, a femto base station, a pico base station, a 5G base station, etc.

[0118] Figure 2 The schematic flowchart of a data transmission method provided in the embodiments of the present application is shown. The data transmission method may include the following steps.

[0119] S101, the terminal device receives first control information sent by the network device, where the first control information is used to indicate the configuration information for the terminal device's data transmission or the BWP switching information for indicating the terminal device to perform BWP switching.

[0120] For ease of description, in the embodiments of the present application, the frequency band on which the terminal device and the network device are currently performing data transmission, or the frequency band determined by the terminal device during the process of accessing the network device, or the activated frequency band is referred to as the first BWP. Among them, the frequency band determined by the terminal device during the process of accessing the network device may be, for example, the frequency band on which the terminal device performs data transmission in the idle state or in the inactive state. In the embodiments of the present application, data transmission includes receiving data, sending data, or other information transmission. At least one other BWP that can perform data transmission configured by the network device for the terminal device may be the second BWP.

[0121] It can be understood that the first BWP can be the minimum bandwidth of the frequency resources required to satisfy the uplink data transmission or downlink data transmission between the network device and the terminal device, so that the network device and the terminal device can reduce power consumption during the data transmission process. The type of the first BWP is not limited in this embodiment, and the above is only one possible type. Exemplarily, the first BWP can be a BWP in the NR system, such as the initial BWP; or, the first BWP is the BWP corresponding to the minimum downlink bandwidth required for the terminal device to access the network device. It can be understood that the initial BWP of the NR system can be the BWP corresponding to the network device sending the necessary system information block type 1 (SIB1); or, the BWP corresponding to the control channel used by the network device to send SIB1; or, the BWP corresponding to the data channel used by the network device to send SIB1. Among them, the bandwidth of the first BWP will be introduced in detail below.

[0122] In one implementation, the first BWP can include multiple consecutive frequency resource units, where one frequency resource unit can be, for example, a resource block (RB).

[0123] In one implementation, the configuration information can include multiple types. For example, the configuration information on the BWP can include at least one of the following: the frequency position of the first BWP, the bandwidth of the first BWP, the system parameter (numerology) used by the terminal device and the network device for data transmission on the first BWP, the configuration information related to the PDCCH transmitted on the first BWP, and the configuration information related to the physical uplink control channel (PUCCH) transmitted on the first BWP.

[0124] It can be understood that the frequency position of the first BWP can be represented by the central frequency position of the first BWP; alternatively, it can be represented by the starting frequency position and / or the ending frequency position of the first BWP. There can be various ways to represent the frequency position of the first BWP, and the present application does not limit this. In addition, numerology can include subcarrier spacing (SCS) and / or the number of symbols included in a time slot. The configuration information corresponding to the PDCCH can include at least one of the following: the frequency resource range including PDCCH transmission; the PDCCH candidate set, where the PDCCH candidate set can be represented by the search space (SS) corresponding to the PDCCH; the aggregation level (AL) corresponding to the PDCCH, where the aggregation level of the PDCCH can be understood as the size of the frequency resources used to transmit one PDCCH, and generally can be represented by the number of the smallest resource units required for the transmission control channel. For example, if the smallest resource unit required to transmit one PDCCH is represented by a control channel element (CCE), the frequency resources for transmitting one PDCCH may be 1 CCE, 2 CCEs, 4 CCEs, 8 CCEs, 16 CCEs, etc. Correspondingly, the aggregation level AL can be 1, 2, 4, 8, 16. The configuration information corresponding to the PUCCH can include at least one of the following: PUCCH format information, the number of bits of the uplink control information carried on the PUCCH.

[0125] For ease of understanding, some related concepts involved in the embodiments of the present application are introduced as follows:

[0126] Downlink control channel: A channel used to carry downlink control information. The downlink control channel in the embodiments of the present application can be an sPDCCH, an NR-PDCCH, and other channels newly defined in future communication protocols with functions similar to those of the downlink control channel. Among them, the sPDCCH (short PDCCH, or shortened PDCCH) refers to a downlink control channel that occupies a time domain resource less than or equal to 0.5 ms. The NR-PDCCH (new radio PDCCH) refers to the downlink control channel defined in the NR system. The embodiments of the present application do not limit the type and name of the downlink control channel, and they are all collectively referred to as PDCCH.

[0127] Aggregation level AL: Also known as the aggregation rank, it can represent the number of consecutive CCEs occupied by a PDCCH. That is to say, a downlink control channel is aggregated by L downlink control channel elements (CCEs), where L is a positive integer. Then, it can be said that the aggregation rank of this PDCCH is L. Specifically, the value of L can be 1, 2, 4, or 8. It should be noted that in order to improve the reliability of the PDCCH, the value of L can also be 16 or 32.

[0128] CCE: A CCE can be composed of n REGs, where n is a positive integer. For example, the value of n can be 3, 4, or 6.

[0129] Search space: A set of candidate downlink control channels, which can be understood as a set composed of one or more candidate downlink control channels. Among them, each candidate downlink control channel can be used to carry downlink control information. The terminal device needs to monitor the candidate downlink control channels, so the search space is also the set of candidate downlink control channels monitored by the terminal device.

[0130] Control resource set (CORESET): A set of resources used to transmit downlink control information, which can also be called a control resource area or a PDCCH resource set.

[0131] In one implementation, there are multiple ways for the terminal device to receive the first control information sent by the network device. For example, the information received through the physical broadcast channel (PBCH); or the information received through the radio resource control (RRC) signaling; or the information received through the medium access control (MAC) signaling; or the information received through the PDCCH or the physical downlink shared channel (PDSCH), etc. The embodiments of this application do not limit the way for the terminal device to receive the first control information sent by the network device.

[0132] It can be understood that the configuration information and the indication information of the band switching can be sent by the network device to the terminal device through the first information field in the first control information. Or, it can be understood that the first information field is used to indicate the configuration information and / or the band switching. Among them, the first information field can be a field composed of some bits in a DCI. The first control information can carry the configuration information of the terminal device on the first BWP or the BWP switching information. When the network device sends the first control information to the terminal device, each time the first control information sent can only have one state. For example, when the network device sends the configuration information to the terminal device, the state information presented by the first control information can be the state information of the configuration information. At this time, the first control information cannot include the indication information of the BWP switching. Among them, there can be multiple ways to specifically represent the configuration information and the BWP switching information on the first control information. The configuration information and the BWP switching information in the first control information will be described below with reference to the accompanying drawings.

[0133] S102. When the first control information is used to indicate the configuration information, the terminal device performs data transmission according to the configuration information; when the first control information indicates that the terminal device performs BWP switching, the terminal device performs BWP switching according to the BWP switching information.

[0134] Among them, for ease of understanding, in the embodiments of the present application, the configuration information related to the first BWP configured by the network device for the terminal device is denoted as the first configuration information, and the configuration information related to the second BWP is denoted as the second configuration information.

[0135] In one implementation manner, as described above, the first configuration information may include at least one of the following: the frequency position of the first BWP, the bandwidth of the first BWP, the numerology used by the terminal device and the network device for data transmission on the first BWP, the configuration information related to the PDCCH for data transmission on the first BWP, the configuration information related to the PUCCH transmitted on the first BWP, and the control information associated with data transmission, such as the scheduling information associated with data transmission. The scheduling information associated with data transmission may include at least one of the following: the control information indicating the frequency resources for data transmission, the control information indicating the time domain resources for data transmission, the control information indicating the modulation mode, the control information indicating the transmission block size (TBS), and the control information indicating the redundancy version (RV) corresponding to the data transmission. It can be understood that the first configuration information may also be the control information included in the downlink control channel for scheduling data transmission.

[0136] It can be understood that the first control information can instruct the terminal device to perform BWP switching. Specifically, it can instruct the terminal device to switch from the current or activated first BWP to the second BWP, or after the terminal device switches from the first BWP to the second BWP, the first control information can also instruct the terminal device to switch from the second BWP back to the first BWP. It can be understood that the first BWP where the terminal device is currently located can be understood as the frequency band corresponding to the current data transmission between the terminal device and the network device.

[0137] The following, in conjunction with the accompanying drawings, provides a more detailed introduction to the specific states that the first control information involved in the data transmission method provided in the embodiment of the present application may have.

[0138] Figure 3 A schematic diagram showing a method for representing configuration information and BWP switching information in first control information provided in an embodiment of the present application is shown.

[0139] The first control information may indicate configuration information or BWP switching information. For ease of understanding, assuming that the first control information includes K bits, the first control information may correspond to 2 bits in a binary system. K kind of state.

[0140] In one implementation, the first control information corresponds to 2 K X states in the states may represent the first configuration information, for example, in 2 K Among the states, the 0th to (X-1)th states can be used to represent the first configuration information. The first configuration information can be the configuration information of the first BWP in which the terminal device is located when accessing the network device or performing data transmission with the network device. KY states out of the states can be used to indicate that the terminal device performs BWP switching. That is, when the state of the first control information is any one of the Y states, the terminal device can switch from the current first BWP to the second BWP according to the BWP switching indicated by the first control information. Optionally, the bandwidths of the first BWP and the second BWP are different, or the positions of the frequency band resources corresponding to the first BWP are different from those of the frequency band resources corresponding to the second BWP. Among them, the frequency band resources corresponding to the first BWP and the frequency band resources corresponding to the second BWP partially overlap or do not overlap at all. In addition, the bandwidths of the first BWP and the second BWP can both be bandwidth A, where bandwidth A is the minimum bandwidth required for data transmission between the terminal device and the network device. It can be understood that the data transmission between the terminal device and the network device includes the data transmission during the process of the terminal device accessing the network device and the data transmission after the terminal device establishes a connection with the network device. Among them, the data transmission during the process of the terminal device accessing the network device can be understood as the data transmission between the terminal device and the network device when the terminal device transitions from the idle state to the non-active state or when the terminal device transitions from the idle state to the connected state.

[0141] It can be understood, 2 K X states out of the states are different from the Y states, that is, any one of the X states is different from any one of the Y states. In addition, both X and Y are integers greater than or equal to 0, and X + Y can be equal to 2 K or X + Y can also be less than 2 K , which is not limited in this application. It can be understood that the first BWP switching information is used to indicate that the terminal device switches from the first BWP to the second BWP.

[0142] In one implementation, the Y states of the first control information can further include second configuration information, first configuration information, or second BWP switching information. Among them, the second configuration information is the configuration information of the terminal device on the second BWP, and the second BWP switching information is used to indicate that the terminal device switches from the second BWP to the first BWP. In other words, the Y states can be regarded as a set, and this set can be divided into multiple subsets, and the multiple subsets respectively include Y 1 states, Y 2 states, and Y 2 states, etc., and Y 1 +Y 2 +Y 3 ≤Y. Among them, the information indicated by each state is as follows: (1) The Y 1 states among the Y states can be used to indicate the second configuration information while indicating the first BWP switching information. For example, in 2 KAmong the states, if the 0th to the (X - 1)th states represent the first configuration information, the Xth to the (X + Y - 1)th states can be used to indicate the first BWP switching information. At this time, among these Y states, it can be further specifically divided into: the Xth to the (X + Y 1 - 1)th states can be used to indicate the first BWP switching information and the second configuration information; (2) Y 2 states among these Y states can be used to indicate the first BWP switching information and the first configuration information simultaneously. For example, among 2 K states, the (X + Y 1 )th to the (X + Yi + Y 2 - 1)th states can be used to indicate the first BWP switching information and the first configuration information. At this time, the range of values of these Y 2 states in the 2 K states is from (X + Y 1 ) to (X + Y 1 + Y 2 - 1); (3) Y 3 states among these Y states can be used to indicate the first BWP switching information, the second configuration information, and the second BWP switching information. For example, among 2 K states, the (X + Y 1 + Y 2 )th to the (X + Y 1 + Y 2 + Y 3 - 1)th states can be used to indicate the first BWP switching information, the second configuration information, and the second BWP switching information. At this time, the range of values of these Y 3 states is from (X + Y 1 + Y 2 ) to (X + Y 1 + Y 2 + Y 3 - 1). It can be understood that the range of values of the above - mentioned states in the 2 K states is only an example. The configuration information and the frequency band switching information included in the first control information can be other combinations except the above - listed combinations, and the present application does not limit this.

[0143] As an example, as shown in Table 1, the 2 K state information of the first control information can correspond to different numbers, such as 0 - (2 K-1), where each number corresponds to different state information, then the number of state information within the first range may be X, and the X state information is used to indicate the first configuration information; the number of state information within the second range may be Y, and the Y state information is used to indicate the first BWP switching information or to indicate the first BWP switching information and other information. The Y state information is used to indicate the first BWP switching information or to indicate the first BWP switching information and other information, and it can be understood that each state information in the Y state information corresponds to the first BWP switching information, or each state information in the Y state information corresponds to the first BWP switching information and other information, or some state information in the Y state information corresponds to the first BWP switching information, and some state information corresponds to the first BWP switching information and other information.

[0144] Table 1

[0145]

[0146] Among them, in addition to indicating the first BWP switching information, the Y status information can also indicate other information, wherein the other information mentioned here can be: the second configuration information, the first configuration information or the second BWP switching information, or any combination of the above three types of information.

[0147] As another example, as shown in Table 2, 2 of the first control information K Each status information can correspond to a different number, such as 0-(2 K -1), where each number corresponds to different state information, then the number of state information within the first range may be X, and the X state information is used to indicate the first configuration information; the number of state information within the second range may be Y 1 , the Y 1 The state information is used to indicate the first BWP switching information and the second configuration information. It can be understood that the second value range mentioned in Table 2 may be different from the second value range mentioned in Table 1. 1 The second value range corresponding to the state information number is a subset of the value range corresponding to the Y state information numbers, that is, the Y state information can also include 1 The number of other status information other than the status information may be within the third value range.

[0148] Table 2

[0149]

[0150] Among them, in addition to indicating the first BWP switching information, the Y status information can also indicate other information, where the other information mentioned here can be: second configuration information, first configuration information, or second BWP switching information, or any combination of the foregoing three types of information.

[0151] As another example, as shown in Table 3, the 2 K status information of the first control information can correspond to different numbers, for example, 0-(2 K -1), where each number corresponds to different status information. Then, the number of status information within the first range of number values can be X, and the X status information is used to indicate the first configuration information; the number of status information within the second range of number values can be Y 1 ones, and the Y 1 status information is used to indicate the first BWP switching information and the second configuration information; the number of status information within the third range of number values can be Y2, and the Y2 status information is used to indicate the first BWP switching information and the first configuration information. It can be understood that the third range of number values mentioned in Table 3 can be different from the third range of number values mentioned in Table 2. For example, in a specific implementation manner, the third range of number values mentioned in Table 3 can be a subset of the third range of number values mentioned in Table 2. Similarly, the fourth range of number values in Table 4 and Table 3 below can also be different in a specific implementation manner. In addition, both the second range of number values and the third range of number values in Table 3 are subsets of the range of number values corresponding to the Y status information, that is, the Y status information can also include other status information in addition to the Y 1 status information and the Y 2 status information, and the number of the other status information can be the fourth range of number values.

[0152] Table 3

[0153]

[0154] Among them, in addition to indicating the first BWP switching information, the Y status information can also indicate other information, where the other information mentioned here can be: second configuration information, first configuration information, or second BWP switching information, or any combination of the foregoing three types of information.

[0155] As another example, as shown in Table 4, the 2 K status information of the first control information can correspond to different numbers, for example, 0-(2 K -1), where each number corresponds to different status information. Then, the number of status information within the first range of number values can be X, and the X status information is used to indicate the first configuration information; the number of status information within the second range of number values can be Y 1pieces, the Y 1 pieces of status information are used to indicate the first BWP switching information and the second configuration information; the number of status information with the number value range being the third value range can be Y 2 pieces, the Y 2 pieces of status information are used to indicate the first BWP switching information and the first configuration information; the number of status information with the number value range being the fourth value range can be Y 3 pieces, the Y 3 pieces of status information are used to indicate the first BWP switching information and the second BWP switching information. It can be understood that the fourth value range mentioned in Table 4 and the fourth value range mentioned in Table 3 can be different. The second value range, the third value range, and the fourth value range in Table 4 are all subsets of the value range corresponding to the numbers of Y pieces of status information. That is to say, among the Y pieces of status information, there can also be other status information in addition to Y 1 pieces of status information, Y 2 pieces of status information and Y 3 pieces of status information. The number of this other status information can be the fifth value range.

[0156] Table 4

[0157]

[0158] Among them, in addition to indicating the first BWP switching information, the Y pieces of status information can also indicate other information. Here, the other information mentioned can be: the second configuration information, the first configuration information, or the second BWP switching information, or any combination of the foregoing three types of information.

[0159] Generally speaking, the 2 K statuses of the first control information can include X statuses for indicating the first configuration information and Y statuses for indicating the first BWP switching. Among them, on the basis of including the first BWP switching indication information, the Y statuses can specifically include one or more of the second configuration information, the first configuration information, and the second BWP switching information. For example, all Y statuses are used to indicate the first BWP switching, or some of the Y statuses are used to indicate the first BWP switching, and some of the Y statuses are used to indicate one or more of the first BWP switching and the second configuration information, the first configuration information, and the second BWP switching information. It can be understood that when the terminal device switches from the first BWP to different second BWPs, it can correspond to different statuses.

[0160] In one implementation, after the terminal device switches from the first BWP to the second BWP according to the BWP switching indicated by the first control information, it can also receive second configuration information sent by the network device. The second configuration information is configuration information related to the second BWP. Among them, the second configuration information may include at least one of the following: the frequency position of the second BWP, the bandwidth of the second BWP, the numerology used by the terminal device and the network device for data transmission on the second BWP, the configuration information related to the PDCCH for data transmission on the second BWP, the configuration information related to the PUCCH transmitted on the second BWP, and the control information associated with data transmission, such as the scheduling information associated with data transmission. The scheduling information associated with data transmission may include at least one of the following: the control information indicating the frequency resources for data transmission, the control information indicating the time-domain resources for data transmission, the control information indicating the modulation mode, the control information indicating the transport block size, and the control information indicating the redundancy version corresponding to data transmission. It can be understood that the first configuration information may also be the control information included in the downlink control channel for scheduling data transmission.

[0161] It can be understood that the frequency position of the second BWP can be represented by the center frequency position of the second BWP; or, represented by the start frequency position and / or the end frequency position of the second BWP. There can be various representation methods for the frequency position of the second BWP, and this application does not limit this. In addition, numerology may include SCS. The configuration information corresponding to the PDCCH may include at least one of the following: the frequency resource range including PDCCH transmission; the PDCCH candidate set, where the PDCCH candidate set can be represented by the SS corresponding to the PDCCH; the AL corresponding to the PDCCH, where the aggregation level of the PDCCH can be understood as the size of the frequency resources used to transmit one PDCCH, and generally can be represented by the number of the smallest resource units required for transmitting the control channel. For example, if the smallest resource unit required for transmitting one PDCCH is represented by CCE, then the frequency resources for transmitting one PDCCH may be 1 CCE, 2 CCEs, 4 CCEs, 8 CCEs, and 16 CCEs, etc. Correspondingly, the aggregation level AL can be 1, 2, 4, 8, 16. The configuration information corresponding to the PUCCH may include at least one of the following: the PUCCH format information, and the uplink control information bits carried on the PUCCH.

[0162] It can be understood that the terminal device can obtain the first configuration information and the second configuration information through the same physical transmission channel or the same signaling. For example, both the first configuration information and the second configuration information are carried in the same RRC signaling.

[0163] It can be understood that various states that the first control information can indicate can be achieved through joint coding, and the first control information cannot indicate multiple states simultaneously. Exemplarily, the first control information cannot simultaneously indicate the first configuration information represented by X states, the first BWP switching information represented by Y states, and the second configuration information. It can be understood that the network device can send multiple first control information to the terminal device, and the specific states of the multiple first control information can be different, thereby instructing the terminal to perform different operations.

[0164] According to the data transmission method provided by the embodiments of the present application, the first control information can be used to indicate configuration information or BWP switching information. The terminal device can obtain the configuration information or BWP switching information by only detecting the first control information, avoiding the problems of high power consumption caused by the terminal device detecting multiple formats of DCI or continuously turning on detection within a timing time and high delay in frequency band switching.

[0165] Figure 4 A schematic diagram showing another representation method of configuration information and BWP switching information in the first control information provided by the embodiments of the present application is shown.

[0166] Among them, the first control information can indicate the first configuration information or indicate the BWP switching information and the second configuration information. For ease of understanding, assuming that the first control information includes K bits, then in a binary manner, the first control information can correspond to 2 K states.

[0167] In one implementation, X of the 2 K states corresponding to the first control information can represent the first configuration information, where the first configuration information can be the configuration information of the first BWP where the terminal device accesses the network device or performs data transmission with the network device; Y of the 2 K states corresponding to the first control information can be used to indicate the first BWP switching information for the terminal device to perform BWP switching, where the Y 1 state information among the Y 1 state information can be used to simultaneously indicate the first BWP switching information and the second configuration information, that is, when the state of the first control information is Y 1When the terminal device is in one of the Y states, the terminal device may switch from the current first BWP to the second BWP according to the BWP switching information indicated by the first control information and perform data transmission on the second BWP according to the second configuration information. Optionally, the bandwidth of the first BWP is different from that of the second BWP, or the frequency band resource position corresponding to the first BWP is different from the frequency band resource position corresponding to the second BWP. Among them, the frequency band resources corresponding to the first BWP and the second BWP partially overlap or do not overlap at all. In addition, the bandwidths of the first BWP and the second BWP may both be bandwidth A, where bandwidth A is the minimum bandwidth required for data transmission between the terminal device and the network device. It can be understood that the data transmission between the terminal device and the network device includes the data transmission during the process of the terminal device accessing the network device and the data transmission after the terminal device establishes a connection with the network device. Among them, the data transmission during the process of the terminal device accessing the network device can be understood as the data transmission between the terminal device and the network device when the terminal device enters the non-active state from the idle state or when the terminal device enters the connected state from the idle state.

[0168] It can be understood that Y 1 is a positive integer less than Y. That is to say, among the above-mentioned Y state information, other state information may also be included. Among them, the other state information may also indicate the first configuration information, the second BWP switching information and their combinations while indicating the first BWP switching information. It can also be understood that the information types indicated by the other state information in the Y states should be different from the information types indicated by the Y 1 state information. For example, if the Y 1 state information is used to simultaneously indicate the first BWP switching information and the second configuration information, then the other state information does not include the state information used to simultaneously indicate the first BWP switching information and the second configuration information. That is to say, in the embodiments of the present application, the state information used to simultaneously indicate the first BWP switching information and the second configuration information has been completely included in the Y 1 state information.

[0169] In one implementation, the second configuration information is information associated with data transmission on the second BWP after the terminal device switches. Exemplarily, the terminal device may determine that the corresponding state is one of the Y 1 state information according to the first control information, and switch from the current first BWP to the second BWP according to the first BWP switching information indicated by the state information, and further perform data transmission with the network device on the switched second BWP according to the second configuration information.

[0170] It can be understood that 2 KX states among the states are all different from Y states, that is, any one of the X states is different from any one of the Y states. In addition, both X and Y are integers greater than or equal to 0, and X + Y can be equal to 2 K Or X + Y can also be less than 2 K , which is not limited in this application.

[0171] In one implementation manner, after the terminal device switches from the first BWP to the second BWP according to the first control information indication, the terminal device can further receive the second configuration information sent by the network device. The second configuration information is the configuration information related to the second BWP. Among them, the information type included in the second configuration information or the manner in which the terminal device obtains the second configuration information is similar to that of the first configuration information. To avoid repetition, it will not be elaborated here.

[0172] It can be understood that the terminal device can obtain the first configuration information and the second configuration information through the same physical transmission channel or the same signaling. For example, both the first configuration information and the second configuration information are carried in the same RRC signaling.

[0173] It can be understood that various states that the first control information can indicate can be implemented through joint coding. Each piece of first control information sent by the network device to the terminal device cannot indicate multiple states at the same time. Exemplarily, the first control information cannot simultaneously indicate the first configuration information represented by X states, the first BWP switching information represented by Y states, and the second configuration information. That is to say, the first control information can only indicate one state at a time, and this state can be to indicate the configuration information or BWP switching information of the terminal device on the first BWP according to different requirements. It can be understood that the network device can send multiple pieces of first control information to the terminal device, and the specific states of the multiple pieces of first control information can be different, so as to instruct the terminal to perform different operations.

[0174] It can be understood that the bandwidths of the first BWP and the second BWP can be the minimum bandwidths of the frequency resources required for the network device and the terminal device to perform uplink data transmission or downlink data transmission, so that the network device and the terminal device can reduce power consumption during the data transmission process. Exemplarily, the first BWP can be, for example, a BWP in the NR system, such as the initial BWP; or, the first BWP is the BWP corresponding to the minimum downlink bandwidth required for the terminal device to access the network device. It can be understood that the initial BWP of the NR system can be the BWP corresponding to the necessary SIB1 sent by the network device; or, the BWP corresponding to the control channel used by the network device to send SIB1; or, the data channel corresponding to the network device sending SIB1. Among them, the bandwidth of the first BWP will be introduced in detail below.

[0175] In one implementation, the first BWP may include a plurality of consecutive frequency resource units, where one frequency resource unit may be, for example, an RB.

[0176] In one implementation, the configuration information may include multiple types. For example, the configuration information on the BWP may include at least one of the following: the frequency position of the first BWP, the bandwidth of the first BWP, the numerology used by the terminal device and the network device for data transmission on the first BWP, the configuration information related to PDCCH for data transmission on the first BWP, and the configuration information related to PUCCH transmitted on the first BWP.

[0177] It can be understood that the frequency position of the first BWP may be represented by the central frequency position of the first BWP; or, by the start frequency position and / or the end frequency position of the first BWP. There may be multiple representation methods for the frequency position of the first BWP, and this application does not limit this. In addition, numerology may include SCS. The configuration information corresponding to PDCCH may include at least one of the following: the frequency resource range including PDCCH transmission; the PDCCH alternative set, where the PDCCH alternative set may be represented by the SS corresponding to PDCCH; the AL corresponding to PDCCH, where the aggregation level of this PDCCH can be understood as the size of the frequency resources used to transmit one PDCCH, and generally can be represented by the number of the smallest resource units required for the transmission control channel. For example, if the smallest resource unit required to transmit one PDCCH is represented by CCE, then the frequency resources for transmitting one PDCCH may be 1 CCE, 2 CCEs, 4 CCEs, 8 CCEs, 16 CCEs, etc. Correspondingly, the aggregation level AL may be 1, 2, 4, 8, 16. The configuration information corresponding to PUCCH may include at least one of the following: PUCCH format information, the uplink control information bits carried on PUCCH.

[0178] In one implementation, there may be multiple ways for the terminal device to receive the first control information sent by the network device. For example, through the information carried in PBCH; or, through the information received by RRC signaling; or, through the information received by MAC signaling; or, through the information received by PDCCH or PDSCH, etc. The embodiments of this application do not limit the way for the terminal device to receive the first control information sent by the network device.

[0179] It can be understood that the configuration information and the indication information of the band switching can be sent by the network device to the terminal device through the first information field in the first control information. Or, it can be understood that the first information field is used to indicate the configuration information and / or the band switching. Among them, the first information field can be a field composed of partial bits in a DCI. The first control information can carry the configuration information of the terminal device on the first BWP or the BWP switching information, and the configuration information and the BWP switching information cannot be carried or represented by the first control information at the same time. In other words, when the network device sends the first control information to the terminal device, each time the first control information sent can only have one state. For example, when the network device sends the configuration information to the terminal device, the state information presented by the first control information can be the state information of the configuration information. At this time, the first control information cannot include the indication information of the BWP switching.

[0180] According to the data transmission method provided by the embodiment of the present application, the first control information can be used to indicate the configuration information or the BWP switching information. The terminal device can obtain the configuration information or the BWP switching information only by detecting the first control information, avoiding the problems of high power consumption caused by the terminal device detecting multiple formats of DCI or continuously turning on the detection within the timing time and high delay in band switching.

[0181] Figure 5 Fig. shows a schematic diagram of another representation method of the configuration information and the BWP switching information in the first control information provided by the embodiment of the present application.

[0182] Among them, the first control information can indicate the configuration information or indicate the BWP switching information and the first configuration information. For ease of understanding, it is assumed that the first control information includes K bits. Then, in a binary manner, the first control information can correspond to 2 K kinds of states.

[0183] In one implementation, X of the 2 K kinds of states corresponding to the first control information can represent the first configuration information. Among them, the first configuration information can be the configuration information of the first BWP where the terminal device accesses the network device or performs data with the network device; Y of the 2 K kinds of states corresponding to the first control information can be used to indicate the first BWP for the terminal device to perform BWP switching. Among them, the Y state information can specifically include Y 2 state information, and Y 2 state information is used to indicate the first BWP configuration information and the first configuration information at the same time. Among them, when the state of the first control information is Y 2When the terminal device is in one of the states, it can perform data transmission with the network device on the first frequency band according to the first configuration information indicated by the first control information, and then switch from the currently located first BWP to the second BWP according to the first BWP switching information. Optionally, the bandwidths of the first BWP and the second BWP are different, or the positions of the frequency band resources corresponding to the first BWP are different from those of the frequency band resources corresponding to the second BWP. Among them, the frequency band resources corresponding to the first BWP and the second BWP partially overlap or do not overlap at all. In addition, both the first BWP and the second BWP are the minimum bandwidths based on meeting the bandwidth requirements of the terminal device and the network device during the access or data transmission process. The bandwidths can both be bandwidth A, where bandwidth A is the minimum bandwidth required for data transmission between the terminal device and the network device. It can be understood that the data transmission between the terminal device and the network device includes the data transmission during the process of the terminal device accessing the network device and the data transmission after the terminal device establishes a connection with the network device. Among them, the data transmission during the process of the terminal device accessing the network device can be understood as the data transmission between the terminal device and the network device when the terminal device transitions from the idle state to the non-active state or when the terminal device transitions from the idle state to the connected state.

[0184] It can be understood that Y 2 is a positive integer less than or equal to Y. That is to say, among the above-mentioned Y state information, other state information can also be included. Among them, the other state information can also indicate the first configuration information, the second BWP switching information, and their combinations while indicating the first BWP switching information. It can also be understood that the information types indicated by the other state information in the Y states should be 2 not exactly the same as the information types indicated by the Y 2 state information. For example, if the Y 2 state information is used to simultaneously indicate the first BWP switching information and the first configuration information, then the other state information no longer includes the state information used to simultaneously indicate the first BWP switching information and the first configuration information. That is to say, in the embodiments of the present application, the state information used to simultaneously indicate the first BWP switching information and the first configuration information has been completely included in the Y

[0185] state information. K It can be understood that X of the 2 K states are different from the Y states, that is, any one of the X states is different from any one of the Y states. In addition, both X and Y are integers greater than or equal to 0, and X + Y can be equal to 2 K , or X + Y can also be less than 2

[0186] In one implementation, the first control information may indicate the first configuration information by one of its X states; or, the first control information may indicate the BWP switching information and the first configuration information by one of its Y states. When the first control information indicates the first configuration information, after receiving the first control information, the terminal device may perform information configuration according to the first configuration information therein, and access the network device or perform data transmission with the network device; when the first control information indicates the BWP switching information and the first configuration information, after receiving the first control information, the terminal device may perform information configuration related to the first BWP according to the first configuration information therein to perform data transmission with the network device, and then switch from the first BWP to the second BWP according to the BWP switching information.

[0187] In one implementation, after the terminal device switches from the first BWP to the second BWP according to the BWP switching indicated by the first control information, the terminal device may further receive the second configuration information sent by the network device, where the second configuration information is the configuration information related to the second BWP. The information type included in the second configuration information or the manner in which the terminal device obtains the second configuration information is similar to that of the first configuration information. To avoid repetition, it will not be elaborated here.

[0188] It can be understood that the first BWP may be the minimum bandwidth of the frequency resources required to satisfy the uplink data transmission or downlink data transmission between the network device and the terminal device, so that the network device and the terminal device can reduce power consumption during the data transmission process. Exemplarily, the first BWP may be, for example, the BWP in the NR system, such as the initial BWP; or, the first BWP is the BWP corresponding to the minimum downlink bandwidth required for the terminal device to access the network device. It can be understood that the initial BWP of the NR system may be the BWP corresponding to the necessary SIB1 sent by the network device; or, the BWP corresponding to the control channel used by the network device to send SIB1; or, the data channel used by the network device to send SIB1. The bandwidth of the first BWP will be introduced in detail below.

[0189] In one implementation, the first BWP may include multiple consecutive frequency resource units, where one frequency resource unit may be, for example, an RB.

[0190] In one implementation, the configuration information may include multiple types. For example, the configuration information on the BWP may include at least one of the following: the frequency position of the first BWP, the bandwidth of the first BWP, the numerology used for data transmission between the terminal device and the network device on the first BWP, the configuration information related to the PDCCH for data transmission on the first BWP, and the configuration information related to the PUCCH transmitted on the first BWP.

[0191] It can be understood that the frequency position of the first BWP can be represented by the central frequency position of the first BWP; alternatively, it can be represented by the starting frequency position and / or the ending frequency position of the first BWP. There can be various ways to represent the frequency position of the first BWP, and this application does not limit it. In addition, numerology can include SCS. The configuration information corresponding to the PDCCH can include at least one of the following: the frequency resource range including the PDCCH transmission; the PDCCH alternative set, where the PDCCH alternative set can be represented by the SS corresponding to the PDCCH; the AL corresponding to the PDCCH, where the aggregation level of the PDCCH can be understood as the size of the frequency resource used to transmit a PDCCH, and generally can be represented by the number of the smallest resource units required for the transmission control channel. For example, if the smallest resource unit required to transmit a PDCCH is represented by a CCE, the frequency resource for transmitting a PDCCH may be 1 CCE, 2 CCEs, 4 CCEs, 8 CCEs, 16 CCEs, etc. Correspondingly, the aggregation level AL can be 1, 2, 4, 8, 16. The configuration information corresponding to the PUCCH can include at least one of the following: PUCCH format information, the uplink control information bits carried on the PUCCH.

[0192] In one implementation, there can be various ways for the terminal device to receive the first control information sent by the network device. For example, it can be through the information carried in the PBCH; or through the information received by the RRC signaling; or through the information received by the MAC signaling; or through the information received by the PDCCH or the PDSCH, etc. The embodiments of this application do not limit the way for the terminal device to receive the first control information sent by the network device.

[0193] It can be understood that the terminal device can obtain the first configuration information and the second configuration information through the same physical transmission channel or the same signaling. For example, both the first configuration information and the second configuration information are carried in the same RRC signaling.

[0194] It can be understood that various states that the first control information can indicate can be considered to be realized by joint coding, and each piece of the first control information sent by the network device to the terminal device cannot indicate multiple states simultaneously. Exemplarily, the first control information cannot simultaneously indicate the first configuration information represented by X states, the first BWP switching information represented by Y states, and the second configuration information, that is, the first control information can only indicate one state at a time, and this state can be to indicate the configuration information or BWP switching information of the terminal device on the first BWP according to different requirements. It can be understood that the network device can send multiple pieces of the first control information to the terminal device, and the specific states of the multiple pieces of the first control information can be different, so as to instruct the terminal to perform different operations.

[0195] According to the data transmission method provided by the embodiments of the present application, the first control information can be used to indicate configuration information or simultaneously indicate BWP switching information and configuration information. The terminal device can obtain the configuration information or simultaneously obtain the BWP switching information and configuration information by only detecting the first control information, thereby avoiding the problem of high power consumption caused by the terminal device detecting multiple formats of DCI or continuously turning on detection within a timing period.

[0196] Figure 6 FIG. shows a schematic diagram of another representation method of configuration information and BWP switching information in the first control information provided by the embodiments of the present application.

[0197] Among them, the first control information can indicate configuration information or indicate BWP switching information and second configuration information. For ease of understanding, assuming that the first control information includes K bits, in a binary manner, the first control information can correspond to 2 K states.

[0198] In one implementation, X of the 2 K states of the first control information can be used to indicate the first configuration information, where the first configuration information can be the configuration information of the terminal device on the first BWP when accessing the network device or performing data transmission with the network device; Y of the 2 K states corresponding to the first control information can be used to indicate the first BWP switching information, where the Y state information can specifically include Y 3 state information. The Y 3 state information is used to simultaneously indicate the first BWP switching information, the second configuration information, and the second BWP switching information. The first BWP switching information is used to indicate that the terminal device switches from the current first BWP to the second BWP. The second BWP indication information can be used to indicate that after the terminal device switches to the second BWP, it switches back from the second BWP to the first BWP or switches from the second BWP to another BWP. In other words, when the state of the first control information is one of the Y 3 states, the terminal device can switch from the current first BWP to the second BWP according to the first BWP switching information represented by the first control information; or switch back from the second BWP to the first BWP according to the second BWP switching information represented by the first control information; or perform data transmission with the network device on the second BWP according to the second configuration information represented by the first control information. Among them, the bandwidths of the first BWP and the second BWP are different, and both the first BWP and the second BWP are the minimum bandwidths on the basis of meeting the bandwidth requirements of the terminal device and the network device during the access or data transmission process.

[0199] It can be understood that Y 3is a positive integer less than or equal to Y. That is to say, among the above-mentioned Y state information, other state information may also be included. Among them, the other state information may indicate the first configuration information, the second BWP switching information, or the second configuration information and their combinations while indicating the first BWP switching information. It can also be understood that the information types indicated by the other state information in the Y states should be different from those indicated by the Y 3 state information. For example, if the Y 3 state information is used to indicate the first BWP switching information, the second BWP switching information, and the second configuration information simultaneously, then the other state information no longer includes the state information used to indicate the first BWP switching information, the second BWP switching information, and the second configuration information simultaneously. That is to say, in the embodiments of the present application, the state information used to indicate the first BWP switching information and the first configuration information has been completely included in the Y 3 state information.

[0200] It can be understood that X of the 2 K states are different from the Y states, that is, any one of the X states is different from any one of the Y states. In addition, both X and Y are integers greater than or equal to 0, and X + Y may be equal to 2 K or X + Y may also be less than 2 K , and the present application does not limit this.

[0201] In one implementation manner, the first control information may indicate the first configuration information through one of its X states; or, the first control information may indicate the BWP switching information and the second configuration information through one of its Y states. When the first control information indicates the first configuration information, after receiving the first control information, the terminal device may perform information configuration according to the first configuration information therein, and access the network device or perform data transmission with the network device; when the first control information indicates the BWP switching information and the second configuration information, after receiving the first control information, the terminal device may perform information configuration related to the second BWP according to the second configuration information therein so as to perform data transmission with the network device.

[0202] It can be understood that the first BWP and the second BWP can be the minimum bandwidths of the frequency resources required to satisfy the uplink data transmission or downlink data transmission between the network device and the terminal device, so that the network device and the terminal device can reduce power consumption during the data transmission process. Exemplarily, the first BWP can be, for example, a BWP in the NR system, such as the initial BWP; or, the first BWP is the BWP corresponding to the minimum downlink bandwidth required for the terminal device to access the network device. It can be understood that the initial BWP of the NR system can be the BWP corresponding to the necessary SIB1 sent by the network device; or, the BWP corresponding to the control channel used by the network device to send SIB1; or, the BWP corresponding to the data channel used by the network device to send SIB1. Among them, the bandwidth of the first BWP will be introduced in detail below.

[0203] In one implementation, the first BWP can include a plurality of consecutive frequency resource units, where one frequency resource unit can be, for example, an RB.

[0204] In one implementation, the configuration information can include multiple types. For example, the configuration information on the BWP can include at least one of the following: the frequency position of the first BWP, the bandwidth of the first BWP, the numerology used by the terminal device and the network device for data transmission on the first BWP, the configuration information related to PDCCH for data transmission on the first BWP, and the configuration information related to PUCCH for transmission on the first BWP.

[0205] It can be understood that the frequency position of the first BWP can be represented by the center frequency position of the first BWP; or, represented by the start frequency position and / or end frequency position of the first BWP. There can be multiple representation methods for the frequency position of the first BWP, and this application does not limit this. In addition, numerology can include SCS. The configuration information corresponding to PDCCH can include at least one of the following: the frequency resource range including PDCCH transmission; the PDCCH candidate set, where the PDCCH candidate set can be represented by the SS corresponding to PDCCH; the AL corresponding to PDCCH, where the aggregation level of this PDCCH can be understood as the size of the frequency resources used to transmit a PDCCH, and generally can be represented by the number of the smallest resource units required to transmit the control channel. For example, if the smallest resource unit required to transmit a PDCCH is represented by a CCE, then the frequency resources for transmitting a PDCCH may be 1 CCE, 2 CCEs, 4 CCEs, 8 CCEs, and 16 CCEs, etc. Correspondingly, the aggregation level AL can be 1, 2, 4, 8, 16. The configuration information corresponding to PUCCH can include at least one of the following: PUCCH format information, the uplink control information bits carried on the PUCCH.

[0206] In one implementation, there are various ways for the terminal device to receive the first control information sent by the network device. For example, it can be through the information carried in the PBCH; or, through the information received by RRC signaling; or, through the information received by MAC signaling; or, through the information received by PDCCH or PDSCH, etc. The embodiments of the present application do not limit the way for the terminal device to receive the first control information sent by the network device.

[0207] It can be understood that various states that the first control information can indicate can be considered to be implemented by joint coding, and the first control information cannot indicate multiple states simultaneously. Exemplarily, the first control information cannot simultaneously indicate the first configuration information represented by X states, the first BWP switching information represented by Y states, and the second configuration information, that is, the first control information can only indicate one state at a time, and this state can be to indicate the configuration information or BWP switching information of the terminal device on the first BWP according to different requirements. It can be understood that the network device can send multiple first control information to the terminal device, and the specific states of the multiple first control information can be different, thereby instructing the terminal to perform different operations.

[0208] According to the data transmission method provided by the embodiments of the present application, the first control information can be used to indicate the configuration information or simultaneously indicate the BWP switching information and the configuration information. The terminal device can obtain the configuration information or simultaneously obtain the BWP switching information and the configuration information only by detecting the first control information, thereby avoiding the problem of high power consumption caused by the terminal device detecting multiple formats of DCI or continuously enabling detection within a timing period.

[0209] Figure 7 The figure shows a schematic diagram of another representation method of the configuration information and BWP switching information in the first control information provided by the embodiments of the present application.

[0210] From Figure 7 It can be seen that the first control information provided by the embodiments of the present application includes X state information and Y state information. Among them, the X state information is used to indicate the first configuration information, that is, the terminal device can perform data transmission with the network device on the first BWP according to the first configuration information; the Y state information is used to indicate the first BWP switching information, that is, the terminal device can switch from the first BWP to the second BWP according to any one of the Y state information. In addition, the Y state information can be further specifically divided, that is, among the Y state information, there can also be Y 1 state information for simultaneously indicating the first BWP switching and Y 3 state information for simultaneously indicating the first BWP switching information, the second BWP switching information, and the second configuration information.

[0211] Among them, Y1 +Y 3 Less than or equal to Y.

[0212] It can be understood that various states that the first control information can indicate can be implemented through joint encoding, and the first control information cannot indicate multiple states simultaneously. Exemplarily, the first control information cannot simultaneously indicate the first configuration information represented by X states, the first BWP switching information represented by Y states, and the second configuration information, that is, the first control information can only indicate one state at a time, and this state can be the configuration information or BWP switching information of the terminal device on the first BWP according to different requirements. It can be understood that the network device can send multiple first control information to the terminal device, and the specific states of the multiple first control information can be different, thereby instructing the terminal to perform different operations.

[0213] In one implementation, the terminal device can determine that the corresponding state according to the first control information is one of the Y states, and then switch from the currently located first BWP to the second BWP according to the indication of this state, and then perform data transmission with the network device on the second BWP according to one of the N states (second configuration information) detected on the second BWP. In one implementation, after ensuring the correct data transmission, the terminal device switches back from the second BWP to the first BWP according to one of the N states. 3 In one implementation, after ensuring the correct data transmission, the terminal device switches back from the second BWP to the first BWP according to one of the N states.

[0214] It can be understood that the first control information provided in the embodiments of the present application can be the control information included in the FB DCI, for example, the control information included in DCI format 0_0 or DCI format 1_0. In the present application, the control information included in DCI format 0_0 or DCI format 1_0 can also be understood as that the control information is transmitted through DCI format 0_0 or DCI format 1_0. The Y states included in the first control information can be the state information that multiplexes the FB DCI redundancy. And the Y specifically included in the Y states listed in the embodiments of the present application 1 、Y 2 、Y 3 are only examples and not an exhaustive list. The Y states can also simultaneously include various other configuration information or BWP band switching information and their combinations, and the present application does not limit this.

[0215] Among them, the correct data transmission mentioned in the embodiments of this application may include: if the terminal device sends uplink data to the network device, the terminal device can determine that the uplink data is correctly received only when it receives the acknowledgement (ACK) corresponding to the uplink data sent by the network device; or, if the terminal device receives the downlink data sent by the network device, the network device can determine that the downlink data is correctly received only when it receives the ACK sent by the terminal device for the downlink data. It can be understood that in the embodiments of this application, after the terminal device sends uplink data to the network device, any data sent by the network device and capable of enabling the terminal device to confirm that the network device has correctly received the uplink data can be regarded as ACK. On the other hand, when the network device sends downlink data, any data sent by the terminal device and capable of enabling the network device to confirm that the terminal device has correctly received the downlink data can be regarded as ACK.

[0216] In one implementation, in the embodiments of this application, the time for the terminal device to switch back from the second BWP to the first BWP can be default. For example, the terminal device, according to one of the Y 3 states, after completing data transmission with the network device on the second BWP, can switch back to the first BWP; or, the time for the terminal device to switch back from the second BWP to the first BWP can also be indicated by the status in the first control information. This application does not make any limitations in this regard.

[0217] In one implementation, the time to switch back from the second BWP to the first BWP can also be indicated by the first control information. For example, when the first control information indicates that the terminal device switches from the first BWP to the second BWP, it can simultaneously indicate when the terminal device switches back from the second BWP to the first BWP.

[0218] It can be understood that by indicating the time for the terminal device to switch back from the second BWP to the first BWP, after the terminal device switches to the second BWP, it does not need to detect its own control information within the Timer and then switch to other BWPs after the Timer expires. Instead, it only needs to determine the duration of data transmission with the network device on the second BWP through the control status in the first control information, avoiding the terminal device from continuously detecting control information within the Timer (even if the network device does not schedule control information to be sent to the terminal device within the Timer), saving the power consumption of the terminal device for completing BWP switching, and thus achieving the purpose of power saving.

[0219] In addition, through the data transmission method provided by the embodiments of the present application, the terminal device can simultaneously implement data transmission and / or BWP switching through the first control information on the first BWP. Therefore, there is no need to detect two formats of DCI formats simultaneously as in the prior art, which simplifies the process of BWP switching of the terminal device, reduces the implementation complexity of BWP switching of the terminal device, saves the power consumption of the terminal device for completing BWP switching, and thus achieves the purpose of power saving.

[0220] For ease of understanding, the following provides a more detailed introduction to the fact that in the data transmission method provided by the embodiments of the present application, the terminal does not need to detect two or more DCI formats, but can implement information configuration or BWP switching through the first control information of one DCI format.

[0221] Taking the first control information as the frequency domain resource allocation information as an example, assume that the maximum bandwidth of the terminal device is 5 MHz. If the SCS of the terminal device during data transmission is 15 KHz, then the maximum number of RBs that can be used simultaneously for data transmission between the terminal device and the network device is 25. Taking downlink data transmission as an example, when the downlink data transmission resource allocation method between the terminal device and the network device uses a continuous frequency domain resource allocation method in terms of RBs, according to the current protocol and based on the maximum number of available RBs, it can be determined that the number of bits used to indicate the frequency domain resource allocation information is 9. However, there are actually a total of 25*(25 + 1) / 2 = 325 continuous frequency domain resource allocation schemes, and 9 bits have 512 states in binary. Therefore, the other states except 325 among the 512 states can be used to indicate the other information except the first configuration information, such as the information corresponding to Y states. Specifically, such as BWP switching information, or indicating the second configuration information and BWP switching information, or indicating BWP round-trip switching information, or indicating the second configuration information and BWP round-trip switching information, etc. The indication of the first information can correspond to 325 states among the 512 states. Table 5 below shows an implementation method, in which the first control information can indicate the first BWP switching in addition to indicating the frequency domain resource allocation. It can be understood that in the present application, the first BWP switching can also be expressed as the first BWP switching information, and the second BWP switching can also be expressed as the second BWP switching information.

[0222] First control information state Switched second BWP label (index) 111111111 0 111111110 1 111111101 2 111111100 3

[0223] As another implementation method, the first control information includes K bits, and the first control information corresponds to one state information among 2 K kinds of states. Assume that X is not greater than (2 K -1), and Y is not greater than (2 K-1), it is possible to distinguish whether the first control information indicates one state information among X states or one state information among Y states according to the value of the highest bit of the K bits. For example, assuming K = 9, if the bits corresponding to the first control information are 0xxxxxxxx, the first control information indicates one state information among X states. On the other hand, if the bits corresponding to the first control information are 1xxxxxxxx, the first control information indicates one state information among Y states, where x represents 1 bit and its value is 0 or 1.

[0224] It should be noted that in the embodiments of the present application, on the first BWP, in order to further reduce the power consumption of the terminal device, it is possible to limit the terminal device to only detect the FB DCI format for the scheduling information specific to the terminal device on the first BWP, without detecting the non-FB DCI format. Through the implementation manner of the present application, the terminal device can determine the scheduling information and the BWP switching information only through the detection of one format of DCI. Therefore, limiting the terminal device to only detect the FB DCI format on the first BWP can not only reduce the complexity of the terminal device detecting DCI and thus reduce the power consumption of the terminal device, but also ensure the realization of the data scheduling and BWP switching functions.

[0225] In addition, optionally, on the second BWP, in order to further reduce the power consumption of the terminal device, it is possible to limit the terminal device to only detect the non-FB DCI for the scheduling information specific to the terminal device on the second BWP. By limiting the number of DCIs detected by the terminal device, the power consumption of the terminal device can be reduced.

[0226] In addition, in the embodiments of the present application, it is also possible to reduce the power consumption of the terminal device detecting the first control information by restricting the transmission parameters corresponding to the physical downlink channel for transmitting the first control information. The corresponding transmission parameters here include the number of CORESET configurations, the number of search spaces, the number of blind detections, the aggregation level, etc. The physical downlink channels here include PDCCH and PDSCH.

[0227] It can be understood that the first BWP, the second BWP, etc. in the embodiments of the present application can be the minimum bandwidths capable of realizing data transmission during the process of the terminal device accessing the network device or the terminal device and the network device performing data transmission. Some possible bandwidths of the first BWP will be introduced in more detail with reference to the drawings.

[0228] In one implementation, when a terminal device is in the process of accessing the access network, the bandwidth of the first BWP it is located in can be equal to the minimum downlink bandwidth required for the terminal device to access the network device. Taking the NR system as an example, the minimum downlink bandwidth required to access the network can be understood as the transmission bandwidth corresponding to the downlink signal or downlink information that the terminal device needs to obtain when accessing the NR system and the necessary protection bandwidth; or, the minimum downlink bandwidth required to access the network device can only be the downlink information or downlink signal that the terminal device needs to obtain when accessing the NR system, without including the necessary protection bandwidth. Among them, to access the NR system, at least the following downlink information or downlink signals need to be obtained.

[0229] (1) Synchronization signal block (SSB)

[0230] As Figure 8 shown, the SSB includes a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a PBCH. The SSB occupies 4 orthogonal frequency division multiplexing (OFDM) symbols in time. The PSS and SSS are transmitted on the 1st and 3rd OFDM symbols respectively, and the corresponding transmission bandwidth is 12 resource blocks (RBs) (more precisely, the transmission bandwidth of the PSS and SSS corresponds to 127 subcarriers). The information included in the PBCH is transmitted on the 2nd, 3rd, and 4th symbols. Among them, on the 2nd and 4th OFDM symbols, the transmission bandwidth is 20 RBs (corresponding to 240 subcarriers), and on the 3rd OFDM symbol, the transmission bandwidth is 8 RBs (corresponding to 96 subcarriers).

[0231] It can be understood that combined with Figure 2 , the transmission bandwidth corresponding to the SSB is 20 RBs. Since 1 RB includes 12 subcarriers, the transmission bandwidth corresponding to the SSB is different according to different subcarrier spacings (SCS). Table 6 shows the transmission bandwidths corresponding to the SSB under several different subcarrier spacings.

[0232] SCS / KHz 15 30 120 240 SSB transmission bandwidth / MHz 3.6 7.2 288 576

[0233] (2) Necessary system information (SI)

[0234] The necessary SI involved in the data transmission method provided by the embodiments of this application can be understood as the minimum system information that a terminal device needs to obtain before initiating random access to a network device. For example, in the NR system, the terminal device can determine the control information for scheduling SIB1 through the control information in the PBCH, and then determine SIB1 through the control information for scheduling SIB1 (hereinafter referred to as SIB1 control information). SIB1 includes the necessary information required for the terminal device to initiate random access to the terminal device, such as a random access preamble, etc. For ease of description, the necessary system information in the embodiments of this application can be represented by SIB1.

[0235] In summary, since the terminal device can receive the SSB and SIB1 at different times respectively, the maximum value between the transmission bandwidth corresponding to the SSB and the transmission bandwidth corresponding to SIB1 can be used as the minimum bandwidth for accessing the NR system. Further, if the terminal device needs to obtain SIB1, it needs to first read the SI B1 control information, and then determine SIB1 according to the SIB1 control information. Then, the transmission bandwidth corresponding to SIB1 can be represented by the transmission bandwidth corresponding to the SIB1 control information or the transmission bandwidth corresponding to SIB1. For example, if the SIB1 control information is carried on the PDCCH and SIB1 is carried on the PDSCH, the transmission bandwidth corresponding to SIB1 can be represented by the transmission bandwidth corresponding to the PDCCH carrying the SIB1 control information or the PDSCH carrying SIB1.

[0236] In one implementation, if there are multiple transmission bandwidths corresponding to SIB1, the maximum value between the minimum transmission bandwidth corresponding to SIB1 and the transmission bandwidth corresponding to the SSB can be used as the minimum bandwidth required to access the NR system. For example, when the subcarrier spacing corresponding to the SSB and the subcarrier spacing corresponding to the PDCCH including the SIB1 control information are both 15 KHz, the transmission bandwidth corresponding to the SIB1 control information may be 24 RBs, or 48 RBs, or 96 RBs. Here, in order to determine the minimum bandwidth required to access the NR system, 24 RBs (4.32 MHz) can be used as the minimum transmission bandwidth corresponding to SIB1. Considering that the transmission bandwidth corresponding to the SSB is 20 RBs (3.6 MHz), the minimum bandwidth required to access the NR system can be understood as 4.32 MHz. Another example is when the subcarrier spacing corresponding to the SSB is 30 KHz and the subcarrier spacing corresponding to the PDCCH including the SIB1 control information is 15 KHz, the transmission bandwidth corresponding to the SIB1 control information may be 48 RBs or 96 RBs. Similarly, in order to determine the minimum bandwidth required to access the NR system, 48 RBs (8.64 MHz) can be used as the minimum transmission bandwidth corresponding to SIB1. Considering that the transmission bandwidth corresponding to the SSB is 20 RBs (7.2 MHz), the minimum bandwidth required to access the NR system can be understood as 8.64 MHz.

[0237] It should be noted that the SIB1 control information can also be carried in other physical layer channels, such as the enhanced physical downlink control channel (EPDCCH). The SIB1 can also be carried in other physical layer channels, which is not limited in this application.

[0238] As an example, the first BWP can be, for example, the initial BWP in the current NR system. Herein, the initial BWP can be understood as the BWP corresponding to the network device sending SIB1. Further, it can be the BWP corresponding to the control channel used by the network device to send SIB1 or the BWP corresponding to the data channel used by the network device to send SIB1. It can be understood that the control channel used by the network device to send SIB1 can include control information for scheduling SIB1 in this control channel. This control channel can be, for example, PDCCH. More specifically, the terminal device can determine the control channel configuration for scheduling SIB1 by receiving the PBCH sent by the network device, and then determine the scheduling control information for SIB1 according to the control channel configuration information of SIB1, and determine SIB1 according to this scheduling control information. If the BWP corresponding to the control channel for scheduling SIB1 indicated by the indication information included in the PBCH is represented by CORESET#0, then the initial BWP can be understood as CORESET#0.

[0239] As another example, the bandwidth of the first BWP can be smaller than the bandwidths of other BWPs. Exemplarily, in addition to the first BWP, the network device can also configure other BWPs. Compared with the bandwidths of other BWPs, the bandwidth of the first BWP is at least not greater than the bandwidths of other BWPs. Specifically, the bandwidth of the first BWP can be smaller than the bandwidths of other BWPs.

[0240] It can be understood that generally, the smaller the bandwidth, the lower the power consumption of the terminal device. Therefore, when the first BWP is the initial BWP or the bandwidth of the first BWP is smaller than the bandwidths of other BWPs, the complexity of the terminal device detecting control information on the first BWP can be reduced, thereby reducing the power consumption of the terminal device.

[0241] In addition, the PDCCH configuration information corresponding to the first BWP can also be restricted. The PDCCH configuration information is as described above. By restricting the PDCCH configuration information, the complexity of the terminal device detecting control information can be further reduced, and the power consumption can be reduced. The control information here can be, for example, the control information including the first control information described above.

[0242] It can be understood that the complexity of the terminal device detecting control information on the first BWP is lower than the complexity of the terminal device detecting control information on other BWPs. From this perspective, the first BWP can also be understood as an energy-saving BWP.

[0243] Figure 9 Fig. shows a schematic structural diagram of a terminal device provided by an embodiment of the present application. The terminal device 900 includes a communication interface 910 and a processor 920.

[0244] In one implementation, the communication interface 910 can be used to receive first control information sent by a network device on a first BWP. The first control information is used to indicate configuration information for data transmission of the terminal device or BWP switching information for instructing the terminal device to perform a bandwidth part (BWP) switch.

[0245] Optionally, the processor 920 can be used to perform data transmission according to the configuration information when the first control information indicates the configuration information; and perform a BWP switch according to the BWP switching information when the first control information indicates the BWP switching information.

[0246] In one implementation, the first control information for indicating configuration information for data transmission of the terminal device or BWP switching information for instructing the terminal device to perform a BWP switch includes: the first control information includes K bits, and the first control information corresponds to one state information among 2 K states corresponding to the K bits; wherein, X state information among the 2 K states is used to indicate the configuration information, Y state information among the 2 K states is used to indicate the BWP switching information, the X state information and the Y state information are all different, and X + Y ≤ 2 K .

[0247] In one implementation, Y state information in the first control information is used to indicate first BWP switching information, and the first BWP switching information is used to instruct the terminal device to switch from a first BWP to a second BWP, where the second BWP is different from the first BWP; X state information in the first control information is used to indicate first configuration information, where the first configuration information is used for data transmission of the terminal device on the first BWP.

[0248] In one implementation, Y 1 state information among the Y state information is further used to indicate second configuration information, and the second configuration information is for data transmission of the terminal device on the second BWP.

[0249] In one implementation, Y 2 state information among the Y state information is further used to indicate the first configuration information.

[0250] In one implementation, the first control information further includes N states, and Y 3 state information among the Y state information is further used to indicate second BWP switching information, and the second BWP switching information is used to instruct the terminal device to switch from the second BWP to the first BWP.

[0251] In one implementation, the bandwidth of the first BWP is the minimum bandwidth required to obtain downlink data during the process of the terminal device accessing the network device; or, the bandwidth of the first BWP is the minimum bandwidth required during the data transmission process between the terminal device and the network device.

[0252] In one implementation, the first BWP is the BWP corresponding to the necessary system information sent by the network device to the terminal device; or, the first BWP is the BWP corresponding to the data channel or control channel used by the terminal device to receive the necessary system information sent by the network device; or, the bandwidth of the first BWP is less than or equal to the bandwidths of at least one second BWP, where the first BWP and the at least one second BWP are both BWPs configured by the network device for the terminal device.

[0253] In one implementation, the configuration information is the frequency resource allocation information corresponding to the data transmission between the terminal device and the network device.

[0254] Figure 10 FIG. shows a schematic structural diagram of a network device provided by an embodiment of the present application. The network device 1000 includes a processor 1010 and a communication interface 1020.

[0255] In one implementation, the processor 1010 may be used to determine first control information, where the first control information is used to indicate the configuration information for the terminal device data transmission or the BWP switching information for indicating the terminal device to perform BWP switching.

[0256] In one implementation, the communication interface 1020 may be used to send the first control information to the terminal device.

[0257] In one implementation, the first control information is used to indicate the configuration information for the terminal device data transmission or the BWP switching information for indicating the terminal device to perform BWP switching, including: the first control information includes K bits, and the first control information corresponds to one state information among the 2 K types of states corresponding to the K bits; where, X state information among the 2 K types of state information is used to indicate the configuration information, Y state information among the 2 K types of state information is used to indicate the BWP switching information, the X state information and the Y state information are all different, and X + Y ≤ 2 K .

[0258] In one implementation, Y status information in the first control information is used to indicate first BWP switching information, and the first BWP switching information is used to indicate that the terminal device switches from a first BWP to a second BWP, where the second BWP is different from the first BWP; X status information in the first control information is used to indicate first configuration information, where the first configuration information is used for data transmission of the terminal device on the first BWP.

[0259] In one implementation, Y of the Y status information 1 is also used to indicate second configuration information, and the second configuration information is for data transmission of the terminal device on the second BWP.

[0260] In one implementation, Y of the Y status information 2 is also used to indicate the first configuration information.

[0261] In one implementation, the first control information further includes N states, and Y of the Y status information 3 is also used to indicate second BWP switching information, and the second BWP switching information is used to indicate that the terminal device switches from the second BWP to the first BWP.

[0262] In one implementation, the bandwidth of the first BWP is the minimum bandwidth required for the terminal device to obtain downlink data during the process of accessing the network device; or, the bandwidth of the first BWP is the minimum bandwidth required for the terminal device to perform data transmission with the network device.

[0263] In one implementation, the first BWP is the BWP corresponding to the terminal device receiving necessary system information sent by the network device; or, the first BWP is the data channel or control channel corresponding to the terminal device receiving necessary system information sent by the network device; or, the bandwidth of the first BWP is less than or equal to the bandwidths of at least one second BWP, where the first BWP and the at least one second BWP are both BWPs configured by the network device for the terminal device.

[0264] In one implementation, the configuration information is frequency resource allocation information corresponding to data transmission between the terminal device and the network device.

[0265] Figure 11 FIG. shows a schematic structural diagram of a terminal device provided in an embodiment of the present application. The terminal device 1100 includes a receiving module 1101 and a processing module 1102.

[0266] In one implementation, the receiving module 1102 can be used to receive first control information sent by a network device, where the first control information is configuration information for instructing the terminal device to perform data transmission or BWP switching information for instructing the terminal device to perform bandwidth part (BWP) switching.

[0267] In one implementation, the processing module 1102 can be used to perform data transmission according to the configuration information when the first control information is used to indicate the configuration information.

[0268] In one implementation, the processing module can also be used to perform BWP switching according to the BWP switching information when the first control information is used to indicate the BWP switching information.

[0269] In one implementation, the first control information for instructing the configuration information of the terminal device's data transmission or the BWP switching information for instructing the terminal device to perform BWP switching includes: the first control information includes K bits, and the first control information corresponds to one state information among the 2 K types of states corresponding to the K bits; wherein, X state information among the 2 K types of states is used to indicate the configuration information, Y state information among the 2 K types of states is used to indicate the BWP switching information, the X state information and the Y state information are all different, and X + Y ≤ 2 K .

[0270] In one implementation, Y state information in the first control information is used to indicate first BWP switching information, and the first BWP switching information is used to indicate that the terminal device switches from a first BWP to a second BWP, where the second BWP is different from the first BWP; X state information in the first control information is used to indicate first configuration information, where the first configuration information is for the terminal device to perform data transmission on the first BWP.

[0271] In one implementation, Y state information among the Y 1 state information is also used to indicate second configuration information, and the second configuration information is for the terminal device to perform data transmission on the second BWP.

[0272] In one implementation, Y state information among the Y 2 state information is also used to indicate the first configuration information.

[0273] In one implementation, the first control information further includes N states, and Y state information among the Y 3The status information is also used to indicate second BWP switching information, and the second BWP switching information is used to indicate that the terminal device switches from the second BWP to the first BWP.

[0274] In one implementation, the bandwidth of the first BWP is the minimum bandwidth required for the terminal device to obtain downlink data during the process of accessing the network device; or, the bandwidth of the first BWP is the minimum bandwidth required for the terminal device to perform data transmission with the network device.

[0275] In one implementation, the first BWP is the BWP corresponding to the necessary system information sent by the network device to the terminal device; or, the first BWP is the data channel or control channel corresponding to the necessary system information sent by the network device to the terminal device when the terminal device receives the necessary system information; or, the bandwidth of the first BWP is less than or equal to the bandwidths of at least one second BWP, where the first BWP and the at least one second BWP are both BWPs configured by the network device for the terminal device.

[0276] In one implementation, the configuration information is the frequency resource allocation information corresponding to the data transmission between the terminal device and the network device.

[0277] Figure 12 Fig. shows a schematic structural diagram of a network device provided by an embodiment of the present application. The terminal device 1200 includes a processing module 1201 and a sending module 1202.

[0278] In one implementation, the processing module 1201 may be used to determine first control information, and the first control information is used to indicate the configuration information for the terminal device to perform data transmission or the BWP switching information for the terminal device to perform BWP switching.

[0279] In one implementation, the sending module 1202 may be used to send the first control information to the terminal device.

[0280] In one implementation, the first control information is used to indicate the configuration information for the terminal device to perform data transmission or the BWP switching information for the terminal device to perform BWP switching, including: the first control information includes K bits, and the first control information corresponds to one state information among the 2 K types of states corresponding to the K bits; where, X state information among the 2 K types of state information is used to indicate the configuration information, and the 2 KY of the state information is used to indicate the BWP switching information, the X state information is different from the Y state information, and X + Y ≤ 2 K 。

[0281] In one implementation, Y of the state information in the first control information is used to indicate first BWP switching information, and the first BWP switching information is used to indicate that the terminal device switches from a first BWP to a second BWP, where the second BWP is different from the first BWP; X of the state information in the first control information is used to indicate first configuration information, where the first configuration information is for data transmission of the terminal device on the first BWP.

[0282] In one implementation, Y of the Y 1 state information is further used to indicate second configuration information, and the second configuration information is for data transmission of the terminal device on the second BWP.

[0283] In one implementation, Y of the Y 2 state information is further used to indicate the first configuration information.

[0284] In one implementation, the first control information further includes N states, and Y of the Y 3 state information is further used to indicate second BWP switching information, and the second BWP switching information is used to indicate that the terminal device switches from the second BWP to the first BWP.

[0285] In one implementation, the bandwidth of the first BWP is the minimum bandwidth required for the terminal device to obtain downlink data during the process of accessing the network device; or, the bandwidth of the first BWP is the minimum bandwidth required for the terminal device to perform data transmission with the network device.

[0286] In one implementation, the first BWP is the BWP corresponding to the terminal device receiving necessary system information sent by the network device; or, the first BWP is the data channel or control channel corresponding to the terminal device when receiving necessary system information sent by the network device; or, the bandwidth of the first BWP is less than or equal to the bandwidth of at least one second BWP, where the first BWP and the at least one second BWP are both BWPs configured by the network device for the terminal device.

[0287] In one implementation, the configuration information is frequency resource allocation information corresponding to data transmission between the terminal device and the network device.

[0288] It can be understood that Figure 11 and Figure 12 the terminal device and network device shown can be used to execute the methods in any of the above embodiments.

[0289] It can be understood that in the embodiments of the present application, "B corresponding to A" means that B is associated with A, and B can be determined according to A. However, it can also be understood that determining B according to A does not mean determining B only according to A, and B can also be determined according to A and / or other information.

[0290] It can also be understood that the term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after.

[0291] Those of ordinary skill in the art can realize that the units and algorithm steps of the examples described in combination with the embodiments disclosed in this article can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but this implementation should not be considered to exceed the scope of this application.

[0292] Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0293] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices, and methods can 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 can be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections to each other can be through some interfaces, and the indirect couplings or communication connections of the devices or units can be in electrical, mechanical, or other forms.

[0294] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they can be located in one place, or they can be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0295] In addition, in each embodiment of the present application, each functional unit can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit.

[0296] If the above-mentioned 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 such an understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memories (ROM), random access memories (RAM), magnetic disks, or optical discs.

[0297] As described above, the above are only specific implementation manners of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present application, and all such changes or substitutions should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A method for data transmission, characterized in that, comprising: The terminal device receives first control information sent by a network device, where the first control information is used to indicate one of configuration information for the terminal device to perform data transmission and BWP switching information for the terminal device to perform bandwidth part (BWP) switching. Among them, the first control information includes K bits, and the first control information corresponds to one state information among 2 K states corresponding to the K bits. K is a positive integer, and X state information among the 2 K states is used to indicate the configuration information, and Y state information among the 2 K states is used to indicate the BWP switching information. The X state information and the Y state information are all different, and both X and Y are positive integers and X + Y ≤ 2 K ; When the first control information is used to indicate the configuration information, the terminal device performs data transmission according to the configuration information; When the first control information is used to indicate the BWP switching information, the terminal device performs BWP switching according to the BWP switching information.

2. The method according to claim 1, characterized in that, Y status information in the first control information is used to indicate first BWP switching information, and the first BWP switching information is used to indicate that the terminal device switches from a first BWP to a second BWP, and the second BWP is different from the first BWP; X status information in the first control information is used to indicate first configuration information, wherein the first configuration information is used for the terminal device to perform data transmission on the first BWP.

3. The method according to claim 2, characterized in that, The Y in the Y status information 1 status information is further used to indicate second configuration information, where the second configuration information is data transmission of the terminal device on a second BWP, and Y 1 is a positive integer.

4. The method according to claim 2 or 3, characterized in that, The Y in the Y state information 2 state information is also used to indicate the first configuration information, where Y 2 is a positive integer.

5. The method according to claim 2 or 3, characterized in that, The Y in the Y status information 3 status information is further used to indicate second BWP switching information, and the second BWP switching information is used to indicate that the terminal device switches from the second BWP to the first BWP, where Y 3 is a positive integer.

6. The method according to claim 2 or 3, characterized in that, The bandwidth of the first BWP is the minimum bandwidth required for the terminal device to obtain downlink data during the process of accessing the network device; or, The bandwidth of the first BWP is the minimum bandwidth required for the terminal device to perform data transmission with the network device.

7. The method according to claim 6, characterized in that, The first BWP is the BWP corresponding to the terminal device receiving the necessary system information sent by the network device; or, The first BWP is the BWP corresponding to the data channel or control channel used by the terminal device to receive the necessary system information sent by the network device; Or, The bandwidth of the first BWP is less than or equal to the bandwidth of at least one second BWP, wherein the first BWP and the at least one second BWP are both BWPs configured by the network device for the terminal device.

8. The method according to any one of claims 1-3, 7, characterized in that, The configuration information is frequency resource allocation information corresponding to the terminal device performing data transmission with the network device.

9. A method for data transmission, characterized in that, comprising: The network device determines first control information, where the first control information is used to indicate one of the configuration information for the terminal device to perform data transmission and the BWP switching information for the terminal device to perform BWP switching. Among them, the first control information includes K bits, and the first control information corresponds to one state information among the 2 K states corresponding to the K bits. K is a positive integer, and X of the 2 K state information is used to indicate the configuration information, and Y of the 2 K state information is used to indicate the BWP switching information. The X state information and the Y state information are all different, and both X and Y are positive integers and X + Y ≤ 2 K ; The network device sends the first control information to the terminal device.

10. The method according to claim 9, characterized in that, Y status information in the first control information is used to indicate first BWP switching information, and the first BWP switching information is used to indicate that the terminal device switches from a first BWP to a second BWP, and the first BWP is different from the second BWP; X status information in the first control information is used to indicate first configuration information, and the first configuration information is used for the terminal to perform data transmission on the first BWP.

11. The method according to claim 10, characterized in that, The Y in the Y status information 1 status information is also used to indicate second configuration information, and the second configuration information is used for data transmission of the terminal device on a second BWP, where Y 1 is a positive integer.

12. The method according to claim 10 or 11, characterized in that, The Y in the Y state information 2 state information is also used to indicate the first configuration information, where Y 2 is a positive integer.

13. The method according to claim 10 or 11, It is characterized in that The Y in the Y status information 3 status information is further used to indicate second BWP switching information, and the second BWP switching information is used to indicate that the terminal device switches from the second BWP to the first BWP, where Y 3 is a positive integer.

14. The method according to claim 10 or 11, It is characterized in that The bandwidth of the first BWP is the minimum bandwidth required to obtain downlink data during the process of the terminal device accessing the network device; or, The bandwidth of the first BWP is the minimum bandwidth required during the data transmission process between the terminal device and the network device.

15. The method according to claim 14, It is characterized in that The first BWP is the BWP corresponding to the necessary system information sent by the network device to the terminal device; or, The first BWP is the BWP corresponding to the data channel or control channel used by the terminal device to receive the necessary system information sent by the network device; Or, The bandwidth of the first BWP is less than or equal to the bandwidth of at least one second BWP, where the first BWP and the at least one second BWP are both BWPs configured by the network device for the terminal device.

16. The method according to any one of claims 9-11 and 15, It is characterized in that The configuration information is the frequency resource allocation information corresponding to the data transmission between the terminal device and the network device.

17. A terminal device, It is characterized in that It includes at least one processor and a communication interface, and the communication interface is used for the terminal device to interact with the network device. When the program instructions are executed in the at least one processor, the terminal device realizes the method according to any one of claims 1-8.

18. A network device, It is characterized in that It includes at least one processor and a communication interface, and the communication interface is used for the network device to interact with the terminal device. When the program instructions are executed in the at least one processor, the network device realizes the method according to any one of claims 9-16.

19. A terminal device, It is characterized in that It includes: A receiving module, configured to receive first control information sent by a network device, where the first control information is one of configuration information for instructing the terminal device to perform data transmission and BWP switching information for the terminal device to perform bandwidth part (BWP) switching. Wherein, the first control information includes K bits, and the first control information corresponds to one state information among 2 K states corresponding to the K bits. K is a positive integer, and X state information among the 2 K states is used to indicate the configuration information, and Y state information among the 2 K states is used to indicate the BWP switching information. The X state information and the Y state information are all different, and both X and Y are positive integers and X + Y ≤ 2 K ; A processing module, configured to perform data transmission according to the configuration information when the first control information is used to indicate the configuration information; The processing module is further configured to perform BWP switching according to the BWP switching information when the first control information is used to indicate the BWP switching information.

20. A network device, It is characterized in that It includes: A processing module, configured to determine first control information, where the first control information is one of configuration information for instructing a terminal device to perform data transmission and BWP switching information for the terminal device to perform BWP switching. Wherein, the first control information includes K bits, and the first control information corresponds to one state information among 2 K states corresponding to the K bits, K is a positive integer, and X state information among the 2 K states is used to indicate the configuration information, and Y state information among the 2 K states is used to indicate the BWP switching information. The X state information and the Y state information are different from each other, and both X and Y are positive integers and X + Y ≤ 2 K ; A sending module, configured to send the first control information to the terminal device.

21. A computer program storage medium, It is characterized in that The computer storage medium has program instructions, and when the program instructions are directly or indirectly executed, the functions of the method according to any one of claims 1-16 are realized on the terminal device or the network device.

22. A chip system, It is characterized in that The chip system includes at least one processor, and when the program instructions are executed in the at least one processor, the functions of the method according to any one of claims 1-16 are realized on the terminal device or the network device.

23. A communication system, It is characterized in that The communication system includes a terminal device and a network device. Among them, the terminal device is used to execute the method described in any one of claims 1-8, and the network device is used to execute the method described in any one of claims 9-16.

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