Data Transmission Method, Terminal Device, and Network Device

Abstract

To provide a method and an apparatus for efficiently indicating a transmission frequency band used for data transmission without causing large signaling overhead.SOLUTION: A data transmission method in a wireless communication system includes: receiving, by a terminal device, first control information for scheduling data transmission of the terminal device; determining, by the terminal device, at least one transmission frequency band corresponding to transmission information based on the transmission information of the terminal device and a first mapping relationship; determining, by the terminal device, a target transmission frequency band from the at least one transmission frequency band; and performing, by the terminal device, data transmission in the target transmission frequency band based on the first control information. The first mapping relationship includes correspondence between multiple pieces of transmission information and multiple transmission frequency bands, and the transmission information includes at least one of an attribute of the first control information, resource type information for data transmission, and business information of the terminal device.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] Embodiments of the present application relate to the field of wireless communication, and specifically, to a data transmission method, a terminal device, and a network device.

Background Art

[0002] In a Long Term Evolution (LTE) system, frequency domain resources of transmitted data are allocated across the entire system bandwidth. In a 5G New Radio (NR) system, since the system bandwidth has increased significantly, the transmission frequency bandwidth of a terminal device may only occupy a part of the system bandwidth. For example, the network divides the system bandwidth into multiple frequency bands, that is, called Bandwidth Part (BWP), and indicates the BWP for its transmitted data to the terminal device via control signaling. However, when there are many BWPs included in the system bandwidth, the overhead of control signaling for indicating a certain BWP becomes large. Therefore, reducing the control signaling overhead while indicating the BWP becomes an issue to be solved.

Summary of the Invention

[0003] Embodiments of the present application provide a data transmission method, a terminal device, and a network device that can efficiently indicate a transmission frequency band used for data transmission without causing a large signaling overhead.

[0004] The first aspect provides a data transmission method, including: a terminal device receiving first control information transmitted by a network device; the terminal device determining at least one transmission frequency band for the transmission information based on the transmission information of the terminal device and a first mapping relationship; the terminal device determining a target transmission frequency band in the at least one transmission frequency band; and the terminal device performing data transmission with the network device in the target transmission frequency band based on the first control information. The first control information is used for scheduling the terminal device to perform data transmission. The first mapping relationship includes a correspondence between a plurality of pieces of transmission information and a plurality of transmission frequency bands. The transmission information includes at least one of the attribute of the first control information, resource type information for the data transmission, and service information of the terminal device.

[0005] Therefore, according to the method according to the embodiments of the present invention, the terminal device can determine at least one transmission frequency band corresponding to the transmission information from the transmission information, and determine a transmission frequency band for data transmission from the at least one transmission frequency band. The network device only needs to perform an instruction for only at least one transmission frequency band corresponding to each piece of transmission information, without the need to perform an instruction for all transmission frequency bands in the system bandwidth. Therefore, the signaling overhead of the downlink control information can be reduced.

[0006] In one possible implementation, the first control information includes frequency band information of the target transmission frequency band, and the first mapping relationship further includes a correspondence between a plurality of transmission frequency bands and a plurality of pieces of frequency band information. Here, the terminal device determining a target transmission frequency band in the at least one transmission frequency band includes: the terminal device determining the target transmission frequency band as the transmission frequency band corresponding to the frequency band information among the at least one transmission frequency band based on the frequency band information of the target transmission frequency band and the first mapping relationship.

[0007] In one possible implementation, before the terminal device determines at least one transmission frequency band for the transmission information based on the transmission information of the terminal device and the first mapping relationship, the method further includes the terminal device receiving second control information sent by the network device, where the second control information includes the first mapping relationship.

[0008] In one possible implementation, the first control information includes downlink control information DCI or media access control element MAC CE.

[0009] In one possible implementation, the second control information includes radio resource control RRC signaling or system information.

[0010] In one possible implementation, the first control information is DCI, and the attributes of the first control information include any of the DCI format of the DCI, the size of the DCI, and information indicating whether the DCI schedules uplink data or downlink data.

[0011] In one possible implementation, the resource type information includes information indicating that the first control information schedules shared resources or dedicated resources of the terminal device, information indicating that the first control information schedules continuous resources or non - continuous resources, and any of resource scheduling units, where the resource scheduling unit includes a symbol, a time slot, or a sub - frame.

[0012] In one possible implementation, the service information of the terminal device includes at least one of the service type information of the terminal device, the service quality information of the terminal device, and the service quality information of the terminal device.

[0013] In one possible implementation, the plurality of transmission information includes first transmission information and second transmission information, and at least one transmission frequency band corresponding to the first transmission information and at least one transmission frequency band corresponding to the second transmission information are the same or at least partially different.

[0014] The second form provides a data transmission method, in which a network device determines at least one transmission frequency band corresponding to the transmission information based on the transmission information of a terminal device and a first mapping relationship, the network device determines a target transmission frequency band in the at least one transmission frequency band, the network device transmits the first control information to the terminal device, and the network device performs data transmission with the terminal device in the target transmission frequency band. The first mapping relationship includes a correspondence between a plurality of transmission information and a plurality of transmission frequency bands, and the transmission information includes at least one of an attribute of first control information for scheduling the terminal device to perform data transmission, resource type information for the data transmission, and service information of the terminal device.

[0015] Therefore, according to the method according to the embodiments of the present invention, a network device determines at least one transmission frequency band corresponding to the transmission information based on the transmission information of a terminal device, selects a transmission frequency band for performing data transmission to the terminal device in the at least one transmission frequency band, and the network device only needs to issue an instruction for only at least one transmission frequency band corresponding to each transmission frequency band, without the need to issue an instruction for all transmission frequency bands in the system bandwidth, so that the signaling overhead of downlink control information can be reduced.

[0016] In one possible implementation, the first control information includes frequency band information of the target transmission frequency band, and the first mapping relationship further includes a correspondence between a plurality of transmission frequency bands and a plurality of pieces of frequency band information. Here, before the network device sends the first control information to the terminal device, the method further includes the network device determining, based on the target transmission frequency band and the first mapping relationship, the frequency band information corresponding to the target transmission frequency band from at least one piece of frequency band information corresponding to at least one transmission frequency band.

[0017] In one possible implementation, before the network device performs data transmission with the terminal device in the target transmission frequency band, the method further includes the network device sending second control information to the terminal device, where the second control information includes the first mapping relationship.

[0018] In one possible implementation, the first control information includes downlink control information DCI or media access control element MAC CE.

[0019] In one possible implementation, the second control information includes radio resource control RRC signaling or system information.

[0020] In one possible implementation, the first control information is DCI, and the attributes of the first control information include any of the DCI format of the DCI, the size of the DCI, and information indicating whether the DCI schedules uplink data or downlink data.

[0021] In one possible implementation, the resource type information includes any one of information indicating that the first control information schedules shared resources or dedicated resources of the terminal device, information indicating that the first control information schedules continuous resources or discontinuous resources, and a resource scheduling unit, where the resource scheduling unit includes symbols, time slots, or sub-frames.

[0022] In one possible implementation, the service information of the terminal device includes at least one of the service type information of the terminal device, the service quality information of the terminal device, and the service quality information of the terminal device.

[0023] In one possible implementation, the plurality of transmission information includes first transmission information and second transmission information, and at least one transmission frequency band corresponding to the first transmission information and at least one transmission frequency band corresponding to the second transmission information are the same or at least partially different.

[0024] The third form provides a terminal device capable of executing the operations of the terminal device in the first form or any implementation form of the first form. Specifically, the terminal device may include a module unit for executing the operations of the terminal device in the first form or any possible implementation form of the first form.

[0025] The fourth form provides a network device capable of executing the operations of the network device in the second form or any implementation form of the second form. Specifically, the network device may include a module unit for executing the operations of the network device in the second form or any possible implementation form of the second form.

[0026] The fifth form provides a terminal device including a processor, a transceiver, and a memory. The processor, the transceiver, and the memory communicate with each other via an internal connection path. The memory is used to store instructions, and the processor is used to execute the instructions stored in the memory. When the processor executes the instructions stored in the memory, the terminal device is caused to execute the method in the first form or any possible implementation form of the first form, or this execution causes the terminal device to implement the terminal device provided in the third aspect.

[0027] The sixth form provides a network device including a processor, a transceiver, and a memory. The processor, the transceiver, and the memory communicate with each other via an internal connection path. The memory is used to store instructions, and the processor is used to execute the instructions stored in the memory. When the processor executes the instructions stored in the memory, the network device is caused to execute the method in the second form or any possible implementation form of the second form, or this execution causes the network device to implement the network device provided in the fourth aspect.

[0028] The seventh form provides a computer-readable storage medium storing a program for causing a terminal device to execute the data transmission method according to the first form and any of its various embodiments.

[0029] The eighth form provides a computer-readable storage medium storing a program for causing a network device to execute the data transmission method according to the second form and any of its various embodiments.

[0030] The ninth form provides a system chip including an input interface, an output interface, a processor, and a memory. The processor executes the instructions stored in the memory, and when the instructions are executed, the processor may implement the method in the first form or any possible implementation form of the first form.

[0031] The tenth form includes an input interface, an output interface, a processor, and a memory. The processor executes instructions stored in the memory. When the instructions are executed, the processor may implement the method in the second form or any possible implementation form of the second form, providing a system-on-chip.

[0032] The eleventh aspect provides a computer program product including instructions. When the computer program product is executed on a computer, the computer is caused to execute the method in the first form or any possible implementation form of the first form.

[0033] The twelfth aspect provides a computer program product including instructions. When the computer program product is executed on a computer, the computer is caused to execute the method in the second form or any possible implementation form of the second form.

Brief Description of the Drawings

[0034]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Modes for Carrying Out the Invention

[0035] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0036] The technical solutions of the embodiments of the present application can be applied to, for example, a Global System of Mobile Communication (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) system, a General Packet Radio Service (GPRS), a Long Term Evolution (LTE) system, an LTE Frequency Division Duplex (FDD) system, an LTE Time Division Duplex (TDD), a Universal Mobile Telecommunication System (UMTS), or a Worldwide Interoperability for Microwave Access (WiMAX) communication system, and a 5G (New Radio: NR) system that may occur in the future. It should be understood that it can be applied.

[0037] This application describes various embodiments related to a terminal device. The terminal device may refer to a User Equipment (UE), an access terminal, a user device, a user station, a mobile station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user device. The access terminal may 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, an in-vehicle device, a wearable device, a terminal device in a future 5G network, or a terminal device in a future Public Land Mobile Network (PLMN) network, etc.

[0038] This application describes various embodiments related to a network device. The network device may be a device for communicating with a terminal device. For example, it may be a base station in a GSM system or a CDMA (Base Transceiver Station, BTS), a base station (NodeB, NB) in a WCDMA system, an evolved base station (Evolutional Node B, eNB or eNodeB) in an LTE system, or a relay station, an access point, an in-vehicle device, a wearable device, and a network-side device in a future 5G network or a network-side device in a future evolved PLMN network, etc.

[0039] FIG. 1 is a schematic diagram of an application scenario of an embodiment of the present invention. The communication system in FIG. 1 may include a network device 10 and a terminal device 20. The network device 10 is a device that provides a communication service to the terminal device 20 and accesses the core network. By searching for a synchronization signal, a broadcast signal, etc. transmitted from the network device 10, the terminal device 20 can access the network and communicate with the network. The arrows shown in FIG. 1 can represent up / down transmissions via a cellular link between the terminal device 20 and the network device 10.

[0040] The network in the embodiment of the present application may refer to a Public Land Mobile Network (PLMN) or a Device to Device (D2D) network or an M2M (Machine to Machine / Man) network or other networks. FIG. 1 is merely an exemplary schematic diagram, and the network may also include other terminal devices not shown in FIG. 1.

[0041] FIG. 2 is a flowchart of a data transmission method in the embodiment of the present application. The method shown in FIG. 2 is executed by a terminal device, and the terminal device may be, for example, the terminal device 20 shown in FIG. 1. As shown in FIG. 2, the data transmission method includes 210 to 240 At 210, the terminal device receives first control information transmitted by the network device.

[0042] Here, the first control information schedules the terminal device to perform data transmission.

[0043] Selectable, and the first control information includes downlink control information (DCI) or a media access control (MAC) control element (CE).

[0044] At 220, the terminal device determines at least one transmission frequency band corresponding to the transmission information based on the transmission information of the terminal device and the first mapping relationship.

[0045] Here, the first mapping relationship includes the correspondence between a plurality of pieces of transmission information and a plurality of transmission frequency bands.

[0046] Here, different transmission frequency bands may have different bandwidth sizes and / or occupy different frequency region positions, and basic parameter sets for data transmission on different frequency bands, such as subcarrier spacing, etc., may be different. This transmission frequency band may also be referred to as a bandwidth configuration or a bandwidth part (BWP) configuration. The system bandwidth includes a plurality of transmission frequency bands, that is, a plurality of BWPs, and each BWP may have a corresponding BWP number to identify different BWPs.

[0047] Here, the transmission information includes at least one of the attribute of the first control information, the resource type information for the data transmission, and the service information of the terminal device.

[0048] Selectable, and the transmission information may be the attribute of the first control information. For example, when the first control information is DCI, the transmission information is the DCI format of the DCI, the size of the DCI, or the information indicating that the DCI schedules uplink data or downlink data.

[0049] Selectable, and the transmission information may be resource type information for the data transmission. For example, the first control information indicates information for scheduling a common resource or a dedicated resource of a terminal device, information for scheduling a continuous resource or a discontinuous resource, or is a resource scheduling unit.

[0050] That is, the resources scheduled by the first control information can be divided according to whether they are common resources, exclusive resources, or according to continuity, and according to the granularity of the scheduling target, and the transmission frequency bands corresponding to different types of resources can be determined according to the differences in the division results.

[0051] Here, the common resource (UE-group-common) is a transmission resource commonly used by a plurality of terminal devices including the terminal device, and the dedicated resource (UE-specific) is a transmission resource exclusive to the terminal device. The network device may also instruct the terminal device with a UE-specific resource or a UE-group-common resource.

[0052] Here, the scheduling unit of the data resource may be a slot, a subframe, a symbol, or the like. For example, when resource scheduling is in time slot units, the network device indicates to the terminal device the position of the time slot where its transmission resource is located for its data transmission, and the terminal device transmits data in the fixed time symbols of that time slot. This process may also be called slot-based scheduling. When resource scheduling is in symbol units, the network device not only indicates to the terminal device the position of the slot where the transmission resource for data transmission exists, but also indicates to the terminal device which symbol in that slot the transmission resource is, and it can be called symbol-based scheduling or non-slot-based scheduling.

[0053] It is selectable, and the transmission information may be the service information of the terminal device, such as the service type information of the terminal device, the service quality information of the terminal device, or the service quality information of the terminal device.

[0054] It is selectable. Before step 220, that is, before the terminal device determines at least one transmission frequency band corresponding to the transmission information based on the transmission information of the terminal device and the first mapping relationship, the method further includes the terminal device receiving second control information transmitted by the network device, and the second control information includes the first mapping relationship.

[0055] Specifically, the first mapping relationship between the plurality of transmission information and the plurality of transmission frequency bands may be a pre-agreed protocol regulation, for example, between the terminal device and the network device, or may be configured in the terminal device after the network device determines it. The network device can always adjust the first mapping relationship and send second control information to the terminal device to indicate the mapping relationship. The terminal device determines at least one transmission frequency band corresponding to its transmission information based on the first mapping relationship configured by the network device.

[0056] This first mapping correspondence relationship between the plurality of transmission information and the plurality of transmission frequency bands may be represented by, for example, a table, a mathematical formula, an image, etc. Among the correspondence relationships between the plurality of transmission information and the plurality of transmission frequency bands, one transmission information may correspond to one or more transmission frequency bands, and one transmission frequency band may correspond to one or more transmission information. That is, the terminal device can refer to a preset mapping table including the correspondence relationship between the plurality of transmission information and the plurality of transmission frequency bands to determine the transmission frequency band corresponding to the transmission information, or the terminal device may calculate the identifier or number of the transmission frequency band corresponding to the transmission information according to a preset formula and the related parameter information of the transmission information. The present application is not limited thereto.

[0057] At 230, the terminal device determines the target transmission frequency band for the data transmission from the at least one transmission frequency band.

[0058] Specifically, among at least one transmission frequency band corresponding to the transmission information, the terminal device selects one or a plurality of transmission frequency bands as the target transmission frequency band for its data transmission. For example, the terminal device may randomly select one of at least one transmission frequency band as the target transmission frequency band for data transmission, or may use all of at least one transmission frequency band for data transmission, or may select the corresponding target transmission frequency band among at least one transmission frequency band based on a predetermined rule.

[0059] In particular, when one piece of transmission information corresponds to only one transmission frequency band, that is, when at least one transmission frequency band corresponding to the transmission information includes only one transmission frequency band, in 230, for the terminal device to determine the target transmission frequency band from the at least one transmission frequency band is for the terminal device to determine the transmission frequency band corresponding to the transmission information as the target transmission frequency band.

[0060] It is selectable, the first control information includes frequency band information of the target transmission frequency band, the first mapping relationship further includes a correspondence relationship between a plurality of transmission frequency bands and a plurality of frequency band information, and here, in 230, for the terminal device to determine the target transmission frequency band in the at least one transmission frequency band is for the terminal device to determine, based on the frequency band information of the target transmission frequency band and the first mapping relationship, the transmission frequency band corresponding to the frequency band information among the at least one transmission frequency band as the target transmission frequency band.

[0061] Specifically, the first mapping relationship includes a correspondence relationship between a plurality of transmission frequency bands and a plurality of frequency band information. After the terminal device determines at least one transmission frequency band corresponding to the transmission information, based on the frequency band information included in the first control information and the first mapping relationship, the terminal device determines the transmission frequency band corresponding to the frequency band information among the at least one transmission frequency band as the target transmission frequency band.

[0062] Each transmission frequency band has corresponding frequency band information belonging to itself, and the frequency band information corresponding to each transmission frequency band is not unique. When at least one transmission frequency band corresponding to transmission information 1 and at least one transmission frequency band corresponding to transmission information 2 include the same transmission frequency band, if the same transmission frequency band corresponds to different transmission information, the frequency band information they have may be the same or different. For example, the transmission information corresponding to at least one transmission frequency band for transmission information 1 in the same transmission frequency band is 00, and the transmission information corresponding to at least one transmission frequency band for transmission information 2 in the same transmission frequency band is 01.

[0063] At 240, the terminal device performs the data transmission with the network device in the target transmission frequency band based on the first control information.

[0064] Specifically, after the terminal device determines at least one transmission frequency band corresponding to the transmission information based on the transmission information, it determines the target transmission frequency band for data transmission from the at least one transmission frequency band based on the frequency band information in the first control information, so as to schedule the first control information transmitted by the network device, and perform the data transmission with the network device in the resources scheduled in the target transmission frequency band.

[0065] In addition, in the embodiments of the present application, when the terminal device performs data transmission with the network device in the transmission frequency band, the data to be transmitted includes service data, signaling data or other types of data. The data transmission includes the terminal device receiving the data from the network device or the terminal device transmitting the data to the network device.

[0066] Therefore, according to the method according to an embodiment of the present invention, the terminal device can determine at least one transmission frequency band corresponding to the transmission information from the transmission information, and can determine a transmission frequency band for data transmission among the at least one transmission frequency band. The network device only needs to issue an instruction only for at least one transmission frequency band corresponding to each transmission frequency band, and there is no need to issue an instruction for all transmission frequency bands in the system bandwidth. Therefore, the signaling overhead of the downlink control information can be reduced.

[0067] For example, as shown in Table 1, assume that the system bandwidth includes 8 BWPs, the first control information is DCI, the transmission information is DCI Format, and the first control information includes preset bits for indicating the frequency band information of the transmission frequency band.

[0068]

Table 1

[0069] According to the mapping relationship shown in Table 1, when the format of the DCI received by the terminal device is DCI Format1, the terminal device can determine that at least one BWP corresponding to DCI Format1 includes BWP1 to BWP4. When the band information carried in the DCI received by the terminal device is 00, the terminal device can determine that the target transmission frequency band for data transmission is BWP1. When the frequency band information in the DCI is 01, the terminal device can determine that the target frequency transmission frequency band is BWP2. When the frequency band information in the DCI is 10, the terminal device can determine that the target transmission frequency band is BWP3. When the frequency band information in the DCI is 11, the terminal device can determine that the target transmission frequency band is BWP4.

[0070] When the format of the DCI received by the terminal device is DCI Format2, the terminal device may determine that at least one BWP corresponding to DCI Format2 includes BWP5 and BWP6. When the frequency band information in the DCI is 0, the terminal device determines that the target transmission frequency band is BWP5, and when the frequency band information in the DCI is 1, the terminal device can determine that the target transmission frequency band is BWP6.

[0071] If the format of the DCI received by the terminal device is DCI Format3, the terminal device determines that only BWP7 is included in at least one transmission frequency band corresponding to DCI Format3, and can determine BWP7 as the target transmission frequency band.

[0072] When the format of the DCI received by the terminal device is DCI Format4, the terminal device determines that only BWP8 is included in at least one transmission frequency band corresponding to DCI Format3, and can determine that BWP8 is the target transmission frequency band.

[0073] In this way, when the DCI is directly used to indicate each of the eight transmission frequency bands from BWP1 to BWP8, the DCI should include at least 3 bits to indicate different transmission frequency bands. According to the mapping relationship shown in Table 1, the eight types of transmission frequency bands from BWP1 to BWP8 are indicated by a maximum of 2 bits, reducing the signaling overhead of the DCI. For example, when the format of the DCI received by the terminal device is DCI Format2, the frequency band information carried in the DCI only needs to occupy 1 bit, indicating BWP5 with 0 and BWP6 with 1. When the format of the DCI received by the terminal device is DCI Format3 or DCI Format4, the DCI does not carry extra bits to indicate the BWP, saving the overhead of the DCI.

[0074] For at least one transmission frequency band corresponding to different transmission information, the frequency band information carried in the first control information may occupy the same number of bits. For example, as shown in Table 2, the first control information is DCI, and the 2 bits included in the DCI indicate at least one BWP corresponding to each DCI format. When the format of the DCI received by the terminal device is DCI Format1, the frequency band information 00 in the DCI indicates BWP1, the frequency band information 01 in the DCI indicates BWP2, the frequency band information 10 indicates BWP3, and the frequency band information 11 in the DCI indicates BWP4. When the format of the DCI received by the terminal device is DCI Format2, the frequency band information 00 in the DCI indicates BWP5, and the frequency band information 01 in the DCI indicates BWP6 (however, 10 and 11 can also be used to indicate other information). When the format of the DCI received by the terminal device is DCI Format3, the frequency band information 00 indicates BWP7 (however, 01, 10, and 11 can also be used to indicate other information). When the format of the DCI received by the terminal device is DCI Format4, the frequency band information 00 is used to indicate BWP8 (however, 01, 10, and 11 can also be used to indicate other information).

[0075]

Table 2

[0076] In addition, in the embodiments of the present application, the plurality of transmission information includes first transmission information and second transmission information, and at least one transmission frequency band corresponding to the first transmission information and at least one transmission frequency band corresponding to the second transmission information are the same or at least partially different.

[0077] In other words, at least one transmission frequency band corresponding to each transmission information is called a frequency band set, and in different frequency band sets corresponding to different transmission information, the same transmission frequency band or different transmission frequency bands may exist. However, for the same transmission frequency band, the corresponding frequency band information may be different in the frequency band sets corresponding to different transmission information. For a certain transmission information, all the frequency band information of the transmission frequency bands in the frequency band set corresponding to the transmission information is different.

[0078] For example, as shown in Table 3, at least one BWP corresponding to DCI Format1 includes BWP1 to BWP4, at least one BWP corresponding to DCI Format2 includes BWP2, BWP5, and BWP6, at least one BWP corresponding to DCI Format3 includes BWP3 and BWP7, and at least one BWP corresponding to DCI Format3 includes only BWP8.

[0079] The BWPs corresponding to DCI Format1 and DCI Format2 both include BWP2. However, in at least one BWP corresponding to DCI Format1, the frequency band information of BWP2 is 01, and in at least one BWP corresponding to DCI Format2, it can be seen that the frequency band information of BWP2 is 01.

[0080] Also, the BWPs corresponding to DCI Format1 and DCI Format3 may both include BWP3. However, in at least one BWP corresponding to DCI Format1, the frequency band information of BWP3 is 10, and in at least one BWP corresponding to DCI Format3, the frequency band information of BWP3 is 00.

[0081]

Table 3

[0082] Regarding the first mapping relationship shown in Table 3, as shown in Table 4, another form is possible where BWP1 corresponds to DCI Format1, BWP2 corresponds to DCI Format1 and DCI Format2, BWP3 corresponds to DCI Format1 and DCI Format3, BWP4 corresponds to DCI Format2, BWP5 corresponds to DCI Format2, BWP6 corresponds to DCI Format2, BWP7 corresponds to DCI Format3, and BWP8 corresponds to DCI Format4.

[0083] When a certain BWP corresponds to multiple DCI Formats, the frequency band information corresponding to that BWP is different in different DCI Formats. For example, when BWP2 is for DCI Format1, the corresponding frequency band information is 01, and when it is for DCI Format2, the corresponding frequency band information is 00.

[0084]

Table 4

[0085] The first mapping relationship was described by taking the case where the transmission information is DCI Format as an example. Hereinafter, with reference to Tables 5 to 8, the cases where the transmission information is DCI Size, uplink information that is DCI, and resource type information will be described as examples.

[0086] As in the first mapping relationship shown in Table 5, the system bandwidth includes 8 BWPs, the first control information is DCI, the transmission information is DCI Size, the bits preset in the first control information are included, and the value on the bits indicates the frequency band information of the target transmission frequency band for which the terminal device performs the data transmission.

[0087]

Table 5

[0088] According to the mapping relationship shown in Table 5, when the size of the DCI received by the terminal device is DCI Size1, the terminal device may determine that at least one BWP corresponding to DCI Size1 includes BWP1 to BWP4. When the frequency band information carried in the DCI received by the terminal device is 00, the terminal device can determine that the target transmission frequency band for data transmission is BWP1. When the frequency band information in the DCI is 01, the terminal device determines that the target transmission frequency band is BWP2. When the frequency band information in the DCI is 10, the terminal device determines that the target transmission frequency band is BWP3. When the frequency band information in the DCI is 11, the terminal device can determine that the target transmission frequency band is BWP4.

[0089] When the size of the DCI received by the terminal device is DCI Size2, the terminal device determines that at least one BWP corresponding to DCI Size2 includes BWP5 and BWP6. When the band information in the DCI is 0, the terminal device determines that the target transmission frequency band is BWP5. When the frequency band information in the DCI is 1, the terminal device can determine that the target transmission frequency band is BWP6.

[0090] When the size of the DCI received by the terminal device is DCI Size3, the terminal device determines that only BWP7 is included in at least one transmission frequency band corresponding to DCI Size3, and can determine BWP7 as the target transmission frequency band.

[0091] When the size of the DCI received by the terminal device is DCI Size4, the terminal device determines that only BWP8 is included in at least one transmission frequency band corresponding to DCI Size3, and can determine BWP8 as the target transmission frequency band.

[0092] When the DCI is directly used to indicate eight transmission frequency bands from BWP1 to BWP8 respectively, the DCI should include at least 3 bits to indicate different transmission frequency bands. Also, according to the mapping relationship shown in Table 5, eight types of transmission bands from BWP1 to BWP8 are indicated by a maximum of 2 bits, reducing the signaling overhead of the DCI. For example, when the size of the DCI received by the terminal device is DCI Size2, the band information carried in the DCI only needs to occupy 1 bit, such as indicating BWP5 with 0 and BWP6 with 1. When the size of the DCI received by the terminal device is DCI Size3 or DCI Size4, the DCI does not carry extra bits to indicate the BWP, saving the overhead of the DCI.

[0093] Also for example, the first mapping relationship shown in Table 6 is that the system bandwidth includes 8 BWPs, the first control information is DCI, the transmission information is the uplink / downlink information indicating whether the data scheduled by the DCI is uplink data or downlink data, the first control information includes preset bits, and the value on the bits indicates the frequency band information of the target transmission frequency band for which the terminal device performs the data transmission.

[0094]

Table 6

[0095] According to the mapping relationship shown in Table 6, if the DIC scheduling is downlink data, the terminal device can determine that at least one BWP corresponding to downlink transmission includes BWP1 to BWP4. When the frequency band information carried in the DCI received by the terminal device is 00, the terminal device can determine that the target transmission frequency band for data transmission is BWP1. When the frequency band information in the DCI is 01, the terminal device determines that the target transmission frequency band is BWP2. When the frequency band information in the DCI is 10, the terminal device determines that the target transmission frequency band is BWP3. When the frequency band information in the DCI is 11, the terminal device can determine that the target transmission frequency band is BWP4.

[0096] If the DCI scheduling is uplink data, the terminal device determines that at least one BWP corresponding to uplink transmission includes BWP5 to BWP8. When the frequency band information carried in the DCI received by the terminal device is 00, the terminal device can determine that the target transmission frequency band for data transmission is BWP5. When the frequency band information in the DCI is 01, the terminal device determines that the target transmission frequency band is BWP6. When the frequency band information in the DCI is 10, the terminal device determines that the target transmission frequency band is BWP7. When the frequency band information in the DCI is 11, the terminal device can determine that the target transmission frequency band is BWP8.

[0097] When the DCI is directly used to indicate each of the eight transmission frequency bands from BWP1 to BWP8, the DCI should include at least 3 bits to indicate different transmission frequency bands. According to the mapping relationship shown in Table 6, the network device indicates eight types of transmission bands from BWP1 to BWP8 with only 2 bits, reducing the signaling overhead of the DCI. For example, when the DCI schedules downlink transmission, the band information carried in the DCI can occupy only 2 bits such that BWP1 is indicated by 00 and BWP2 is indicated by 01.

[0098] Also, for example, like the first mapping relationship shown in Table 7, the system bandwidth includes eight BWPs, and the transmission information is information indicating whether to schedule common resources or dedicated resources of the terminal device. The first control information includes a value indicating the frequency band information of the target transmission frequency band for which the terminal device performs data transmission in preset bits.

[0099]

Table 7

[0100] According to the mapping relationship shown in Table 7, when the first control information schedules the dedicated resources of the terminal device, the terminal device can determine that at least one BWP corresponding to the dedicated resources includes BWP1 to BWP4. When the band information included in the first control information received by the terminal device is 00, the terminal device can determine that the target transmission frequency band for data transmission is BWP1. When the frequency band information of the first control information is 01, the terminal device determines that the target transmission frequency band is BWP2. When the band information of the first control information is 10, the terminal device determines that the target transmission frequency band is BWP3. If the frequency band information of the first control information is 11, the terminal device can determine that the target transmission frequency band is BWP4.

[0101] When the first control information schedules common resources of a plurality of terminal devices including a terminal device, the terminal device can determine that at least one BWP corresponding to the common resources includes BWP5 to BWP8. When the frequency band information included in the first control information received by the terminal device is 00, the terminal device can determine that the target transmission frequency band for data transmission is BWP5. When the frequency band information of the first control information is 01, the terminal device determines that the target transmission frequency band is BWP6. When the frequency band information of the first control information is 10, the terminal device determines that the target transmission frequency band is BWP7. If the frequency band information of the first control information is 11, the terminal device can determine that the target transmission frequency band is BWP8.

[0102] When directly using the first control information to indicate each of the eight types of transmission frequency bands of BWP1 to BWP8, the first control information includes 3 bits for indicating different transmission frequency bands. According to the mapping relationship shown in Table 7, the network device only needs to indicate the eight types of transmission bands from BWP1 to BWP8 with 2 bits, reducing the signaling overhead of the first control information. For example, when the resource scheduled by the first control information is an exclusive resource, the frequency band information carried in the first control information only needs to occupy 2 bits, indicating BWP1 with 00 and BWP2 with 01.

[0103] Also, for example, the first mapping relationship shown in Table 8 means that the system bandwidth includes eight BWPs, the transmission information is a resource scheduling unit, the first control information includes preset bits, and the value on the bits indicates the frequency band information of the target transmission frequency band for the terminal device to perform the data transmission.

[0104]

Table 8

[0105] According to the mapping relationship shown in Table 8, when the resource scheduling unit is a time slot, that is, when the first control information is the scheduling of the network device based on time slots (slot-based scheduling), at least one BWP corresponding to the case where the resource scheduling unit is a time slot can be determined to include BWP1 to BWP4. When the frequency band information included in the first control information received by the terminal device is 00, the terminal device can determine that the target transmission frequency band for data transmission is BWP1. When the frequency band information of the first control information is 01, the terminal device determines that the target transmission frequency band is BWP2. When the frequency band information of the first control information received by the terminal device is 10, the terminal device determines that the target transmission frequency band is BWP3. If the frequency band information of the first control information is 11, the terminal device can determine that the target transmission frequency band is BWP4.

[0106] When the resource scheduling unit is a symbol, that is, when the first control information is the scheduling of the network device based on symbols (symbol-based scheduling), the terminal device can determine that at least one BWP corresponding to the case where the resource scheduling unit is a symbol includes BWP5 to BWP8. When the frequency band information included in the first control information received by the terminal device is 00, the terminal device can determine that the target transmission frequency band for data transmission is BWP5. When the frequency band information of the first control information is 01, the terminal device determines that the target transmission frequency band is BWP6. When the frequency band information of the first control information received by the terminal device is 10, the terminal device determines that the target transmission frequency band is BWP7. If the frequency band information of the first control information is 11, the terminal device can determine that the target transmission frequency band is BWP8.

[0107] When directly using the first control information to respectively indicate eight types of transmission frequency bands of BWP1 to BWP8, the first control information only needs to include 3 bits for indicating different transmission bands. According to the mapping relationship shown in Table 8, the network device only needs to indicate eight types of transmission bands from BWP1 to BWP8 with only 2 bits, and the signaling overhead of the first control information is reduced. For example, when the first control information is scheduling in time slot units, the band information carried in the first control information occupies 2 bits, where BWP1 is indicated by 00 and BWP2 is indicated by 01.

[0108] Figure 3 is a flowchart of the data transmission method in the embodiment of the present application. The method shown in Figure 3 is executed by a network device, and the network device is, for example, the network device 10 shown in Figure 1. As shown in Figure 3, the data transmission method includes 310 to 340.

[0109] 310, the network device determines at least one transmission frequency band corresponding to the transmission information based on the transmission information of the terminal device and the first mapping relationship. Here, the first mapping relationship includes the correspondence between a plurality of transmission information and a plurality of transmission frequency bands, and the transmission information includes at least one of the attribute of the first control information for scheduling the terminal device to perform data transmission, the resource type information for the data transmission, and the service information of the terminal device.

[0110] 320, the network device determines a target transmission frequency band in the at least one transmission frequency band.

[0111] 330, the network device transmits the first control information to the terminal device.

[0112] 340, the network device performs data transmission with the terminal device in the target transmission frequency band.

[0113] Specifically, based on the transmission information of the terminal device and the first mapping relationship, the network device determines at least one transmission frequency band corresponding to the transmission information (different transmission frequency bands occupy different bandwidth sizes and / or different frequency region positions, etc., and different transmission frequency bands can also have different basic parameter sets, such as subcarrier spacing, etc.), and in the at least one transmission frequency band, by constituting a target transmission frequency band for data transmission to the terminal device, data transmission with the terminal device can be performed on the target transmission frequency band.

[0114] Therefore, according to the method according to the embodiment of the present invention, the network device determines at least one transmission frequency band corresponding to the transmission information based on the transmission information of the terminal device, selects a transmission frequency band for data transmission to the terminal device in the at least one transmission frequency band, and the network device only needs to issue an instruction for only at least one transmission frequency band corresponding to each transmission frequency band, and there is no need to issue an instruction for all transmission frequency bands in the system bandwidth, so the signaling overhead of the downlink control information can be reduced.

[0115] Selectable, the first control information includes frequency band information of the target transmission frequency band, and the first mapping relationship further includes a correspondence between a plurality of transmission frequency bands and a plurality of frequency band information. Here, before the network device transmits the first control information to the terminal device, the method further includes the network device determining the frequency band information corresponding to the target transmission frequency band from at least one frequency band information corresponding to the at least one transmission frequency band based on the target transmission frequency band and the first mapping relationship.

[0116] Each transmission frequency band has corresponding frequency band information belonging to itself, and the frequency band information corresponding to each transmission frequency band is not unique. When at least one transmission frequency band corresponding to the first transmission information and at least one transmission frequency band corresponding to the second transmission information include the same transmission frequency band, if the same transmission frequency band corresponds to different transmission information, the frequency band information they have may be the same or different.

[0117] After the network device determines at least one transmission frequency band corresponding to the transmission information of the terminal device, based on the first mapping relationship between the target transmission frequency band and the transmission information, the network device determines the frequency band information corresponding to the target transmission frequency band from at least one frequency band information corresponding to the at least one transmission frequency band corresponding to the transmission information.

[0118] When it is selectable and before the network device performs data transmission with the terminal device in the target transmission frequency band, the method further includes the network device sending second control information to the terminal device, and the second control information includes the first mapping relationship.

[0119] When it is selectable, the first control information includes downlink control information DCI or media access control element MAC CE.

[0120] When it is selectable, the second control information includes radio resource control RRC signaling or system information.

[0121] When it is selectable, the first control information is DCI, and the attributes of the first control information include any of the DCI format of the DCI, the size of the DCI, and information indicating whether the DCI schedules uplink data or downlink data.

[0122] Selectable, wherein the resource type information includes information indicating that the first control information schedules shared resources or exclusive resources of the terminal device, information indicating that the first control information schedules continuous resources or non - continuous resources, and any one of resource scheduling units, where the resource scheduling unit includes a symbol, a time slot, or a sub - frame.

[0123] Selectable, wherein the service information of the terminal device includes at least one of the service type information of the terminal device, the quality - of - service information of the terminal device, and the service quality information of the terminal device.

[0124] Selectable, wherein the plurality of transmission information includes first transmission information and second transmission information, and at least one transmission frequency band corresponding to the first transmission information and at least one transmission frequency band corresponding to the second transmission information are the same or at least partially different.

[0125] Note that the process of the network device determining the transmission frequency band according to the first mapping relationship may, in particular, refer to the description regarding the terminal device in FIG. 2 above. For the sake of brevity, a detailed description is omitted here.

[0126] Also, in various embodiments of the present invention, the magnitude order of the above - mentioned processes does not mean the order before and after execution. The execution order of each process should be determined by its function and internal logic, and it should be understood that the processes of the embodiments of the present invention are not limited in any way.

[0127] FIG. 4 is a block diagram of a terminal device 400 in an embodiment of the present application. As shown in FIG. 4, the terminal device 400 includes a transceiver unit 410 and a determination unit 420.

[0128] The transmission / reception unit 410 is configured to receive first control information transmitted by a network device, and the first control information is used for scheduling the terminal device to perform data transmission.

[0129] The determination unit 420 is configured to determine at least one transmission frequency band corresponding to the transmission information based on the transmission information of the terminal device and a first mapping relationship. Here, the first mapping relationship includes a correspondence relationship between a plurality of pieces of transmission information and a plurality of transmission frequency bands, and the transmission information includes at least one of the attribute of the first control information, resource type information for the data transmission, and service information of the terminal device. The determination unit 420 is further configured to determine a target transmission frequency band from the at least one transmission frequency band.

[0130] The transmission / reception unit 410 is further configured to perform data transmission with the network device in the target transmission frequency band based on the first control information.

[0131] And, the terminal device in the embodiment of the present application can determine at least one transmission frequency band corresponding to the transmission information from the transmission information, and determine a transmission frequency band for data transmission from the at least one transmission frequency band. The network device only needs to issue an instruction for only at least one transmission frequency band corresponding to each transmission frequency band, and there is no need to issue an instruction for all transmission frequency bands in the system bandwidth. Therefore, the signaling overhead of the downlink control information can be reduced.

[0132] Selectable, the first control information includes frequency band information of the target transmission frequency band, and the first mapping relationship further includes a correspondence relationship between a plurality of transmission frequency bands and a plurality of frequency band information. Here, the determination unit 420 is further configured to determine the target transmission frequency band as a transmission frequency band corresponding to the frequency band information among the at least one transmission frequency band based on the frequency band information of the target transmission frequency band and the first mapping relationship.

[0133] Selectable, the transceiver unit 410 is further configured to receive second control information transmitted by the network device, and the second control information includes the first mapping relationship.

[0134] Selectable, the first control information includes downlink control information DCI or media access control element MAC CE.

[0135] Selectable, the second control information includes radio resource control RRC signaling or system information.

[0136] Selectable, the first control information is DCI, and the attributes of the first control information include any of the DCI format of the DCI, the size of the DCI, and information indicating that the DCI schedules uplink data or downlink data.

[0137] Selectable, the resource type information includes information indicating that the first control information schedules shared resources or dedicated resources of the terminal device, information indicating that the first control information schedules continuous resources or non - continuous resources, and any of resource scheduling units. Here, the resource scheduling unit includes symbols, time slots or sub - frames.

[0138] Selectable, and the service information of the terminal device includes at least one of the service type information of the terminal device, the service quality information of the terminal device, and the service quality information of the terminal device.

[0139] Selectable, the plurality of transmission information includes first transmission information and second transmission information, and at least one transmission frequency band corresponding to the first transmission information and at least one transmission information corresponding to the second transmission information are the same or at least partially different.

[0140] FIG. 5 is a block diagram of a network device 500 according to an embodiment of the present application. As shown in FIG. 5, the network device 500 includes a determination unit 510 and a transceiver unit 520.

[0141] The determination unit 510 is configured to determine at least one transmission frequency band corresponding to the transmission information based on the transmission information of the terminal device and a first mapping relationship, where the first mapping relationship includes a correspondence between a plurality of transmission information and a plurality of transmission frequency bands, and the transmission information includes at least one of an attribute of first control information for scheduling the terminal device to perform data transmission, resource type information for the data transmission, and service information of the terminal device.

[0142] The determination unit 510 is further configured to determine a target transmission frequency band from the at least one transmission frequency band.

[0143] The transceiver unit 520 is configured to transmit the first control information to the terminal device.

[0144] The transceiver unit 520 is further configured to perform data transmission with the terminal device in the target transmission frequency band.

[0145] Moreover, the network device in the embodiment of the present application determines at least one transmission frequency band corresponding to the transmission information based on the transmission information of the terminal device, selects a transmission frequency band for data transmission to the terminal device in the at least one transmission frequency band, and the network device only needs to issue an instruction for only at least one transmission frequency band corresponding to each transmission frequency band, and there is no need to issue an instruction for all transmission frequency bands in the system bandwidth. Therefore, the signaling overhead of the downlink control information can be reduced.

[0146] Selectable, the first control information includes frequency band information of the target transmission frequency band, and the first mapping relationship further includes a correspondence between a plurality of transmission frequency bands and a plurality of frequency band information. Here, the determination unit 510 is further configured to determine the frequency band information corresponding to the target transmission frequency band from at least one frequency band information corresponding to the at least one transmission frequency band based on the target transmission frequency band and the first mapping relationship.

[0147] Selectable, the transceiver unit 520 is further configured to transmit second control information to the terminal device, and the second control information includes the first mapping relationship.

[0148] Selectable, the first control information includes downlink control information DCI or media access control element MAC CE.

[0149] Selectable, the second control information includes radio resource control RRC signaling or system information.

[0150] Selectable, the first control information is DCI, and the attributes of the first control information include any of the DCI format of the DCI, the size of the DCI, and information indicating that the DCI schedules uplink data or downlink data.

[0151] Selectable, the resource type information includes information indicating that the first control information schedules shared resources or exclusive resources of the terminal device, information indicating that the first control information schedules continuous resources or non - continuous resources, and any one of resource scheduling units, where the resource scheduling unit includes a symbol, a time slot, or a sub - frame.

[0152] Selectable, the service information of the terminal device includes at least one of the service type information of the terminal device, the service quality information of the terminal device, and the service quality information of the terminal device.

[0153] Selectable, the plurality of transmission information includes first transmission information and second transmission information, and at least one transmission frequency band corresponding to the first transmission information and at least one transmission frequency band corresponding to the second transmission information are the same or at least partially different.

[0154] FIG. 6 is a schematic configuration diagram of a terminal device 600 according to an embodiment of the present invention. As shown in FIG. 6, the terminal device includes a processor 610, a transceiver 20, and a memory 630. The processor 610, the transceiver 20, and the memory 630 communicate with each other via an internal connection path. The memory 630 is used to store instructions, and the processor 610 is used to execute the instructions stored by the memory 630 to control the transceiver 20 to receive or transmit signals.

[0155] The transceiver 20 is configured to receive first control information transmitted by a network device, and the first control information is used to schedule the terminal device to perform data transmission.

[0156] When the processor 610 determines at least one transmission frequency band corresponding to the transmission information based on the transmission information of the terminal device and the first mapping relationship, where the first mapping relationship includes a correspondence between a plurality of pieces of transmission information and a plurality of transmission frequency bands, the transmission information includes at least one of an attribute of the first control information, resource type information for data transmission, and service information of the terminal device, and is configured to determine a target transmission frequency band from the at least one transmission frequency band.

[0157] The transceiver 620 is further configured to perform data transmission with the network device in the target transmission frequency band based on the first control information.

[0158] Selectable, the first control information includes frequency band information of the target transmission frequency band, and the first mapping relationship further includes a correspondence between a plurality of transmission frequency bands and a plurality of pieces of frequency band information. Here, the processor 610 is further configured to determine the target transmission frequency band as the transmission frequency band corresponding to the frequency band information among the at least one transmission frequency band based on the frequency band information of the target transmission frequency band and the first mapping relationship.

[0159] Selectable, the transceiver 620 is further configured to receive second control information transmitted by the network device, and the second control information includes the first mapping relationship.

[0160] Selectable, the first control information includes downlink control information DCI or media access control element MAC CE.

[0161] Selectable, the second control information includes radio resource control RRC signaling or system information.

[0162] Selectable, the first control information is DCI, and the attributes of the first control information include any one of the DCI format of the DCI, the size of the DCI, and information indicating whether the DCI schedules uplink data or downlink data.

[0163] Selectable, the resource type information includes any one of information indicating that the first control information schedules shared resources or exclusive resources of the terminal device, information indicating that the first control information schedules continuous resources or non - continuous resources, and a resource scheduling unit, where the resource scheduling unit includes a symbol, a time slot, or a sub - frame.

[0164] Selectable, the traffic information of the terminal device includes at least one of the traffic type information of the terminal device, the service quality information of the terminal device, and the traffic quality information of the terminal device.

[0165] Selectable, the plurality of transmission information includes first transmission information and second transmission information, and at least one transmission frequency band corresponding to the first transmission information and at least one transmission frequency band corresponding to the second transmission information are the same or at least partially different.

[0166] In an embodiment of the present invention, the processor 610 may be a central processing unit (CPU), or may be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), off-the-shelf programmable gate arrays (FPGAs) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. It should be understood that the general-purpose processor may be a microprocessor, and the processor may be any conventional processor or the like.

[0167] The memory 630 may include a read-only memory and a random access memory, and may provide instructions and data to the processor 610. A part of the memory 630 may further include a non-volatile random access memory.

[0168] In implementation, the steps of the method may be executed by integrated logic circuits of the hardware in the processor 610 or instructions in the form of software. The steps of the location identification method disclosed in connection with the embodiments of the present application may be directly embodied as hardware processor execution, or may be executed by a combination of hardware and software modules in the processor 610. The software module may be disposed in a storage medium skilled in the art such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, register, etc. This storage medium is located in the memory 630, and the processor 610 reads the information in the memory 630 and executes the steps of the above-described method together with its hardware. To avoid repetition, detailed description is omitted here.

[0169] The terminal device 600 according to an embodiment of the present invention can correspond to the terminal device for executing the foregoing method 200 and the terminal device 400 according to an embodiment of the present invention. Each unit or module of the terminal device 600 is respectively used to execute each operation or processing process executed by the terminal device of the foregoing method 200. Here, in order to avoid redundant description, its detailed description is omitted.

[0170] FIG. 7 is a schematic configuration diagram of a network device 700 according to an embodiment of the present invention. As shown in FIG. 7, the network device includes a processor 710, a transceiver 720, and a memory 730. The processor 710, the transceiver 720, and the memory 730 communicate with each other via an internal connection path. The memory 730 is used to store instructions, and the processor 710 is used to execute the instructions stored in the memory 730 to control the transceiver 720 to receive or transmit signals.

[0171] The processor 710 is configured to determine at least one transmission frequency band corresponding to the transmission information based on the transmission information of the terminal device and the first mapping relationship. Here, the first mapping relationship includes the correspondence between a plurality of pieces of transmission information and a plurality of transmission frequency bands, and the transmission information includes at least one of the attribute of the first control information for scheduling the terminal device to perform data transmission, the resource type information for the data transmission, and the service information of the terminal device. The processor 710 is configured to determine a target transmission frequency band from the at least one transmission frequency band. The transceiver 720 is configured to transmit the first control information to the terminal device and perform data transmission with the terminal device in the target transmission frequency band.

[0172] Selectable, the first control information includes frequency band information of the target transmission frequency band, the first mapping relationship further includes a correspondence relationship between a plurality of transmission frequency bands and a plurality of pieces of frequency band information. Here, the processor 710 is further configured to determine the frequency band information corresponding to the target transmission frequency band from at least one piece of frequency band information corresponding to the at least one transmission frequency band based on the target transmission frequency band and the first mapping relationship.

[0173] Selectable, the transceiver 720 is further configured to transmit second control information to the terminal device, and the second control information includes the first mapping relationship.

[0174] Selectable, the first control information includes downlink control information DCI or media access control element MAC CE.

[0175] Selectable, the second control information includes radio resource control RRC signaling or system information.

[0176] Selectable, the first control information is DCI, and the attributes of the first control information include any of the DCI format of the DCI, the size of the DCI, and information indicating whether the DCI schedules uplink data or downlink data.

[0177] Selectable, the resource type information includes information indicating whether the first control information schedules shared resources or dedicated resources of the terminal device, information indicating whether the first control information schedules continuous resources or non - continuous resources, and any of resource scheduling units. Here, the resource scheduling unit includes a symbol, a time slot, or a sub - frame.

[0178] Selectable, and the service information of the terminal device includes at least one of the service type information of the terminal device, the service quality information of the terminal device, and the service quality information of the terminal device.

[0179] Selectable, the plurality of transmission information includes first transmission information and second transmission information, and at least one transmission frequency band corresponding to the first transmission information and at least one transmission frequency band corresponding to the second transmission information are the same or at least partially different.

[0180] In an embodiment of the present invention, the processor 710 may be a central processing unit (CPU), and may also be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), off-the-shelf programmable gate arrays (FPGAs), or other programmable logic devices, individual gates or transistor logic devices, individual hardware components, etc. It should be understood that the general-purpose processor may be a microprocessor, and the processor may be any conventional processor or the like.

[0181] The memory 730 can include a read-only memory and a random access memory, and provides instructions and data to the processor 710. A part of the memory 730 may further include a non-volatile random access memory. In the process of implementation, the steps of the method can be executed by the integrated logic circuit of the hardware in the processor 710 or instructions in the form of software. The steps of the location identification method disclosed in the embodiments of the present application may be directly embodied as the execution of a hardware processor, or may be executed by a combination of the hardware and software modules in the processor 710. The software module can be arranged in a storage medium familiar to those skilled in the art such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, or an electrically erasable programmable memory, a register, etc. This storage medium is located in the memory 730, and the processor 710 reads the information in the memory 730 and executes the steps of the above-described method together with its hardware. To avoid duplication, detailed description is omitted here.

[0182] The network device 700 according to the embodiment of the present invention can correspond to the network device that executes the method 300 of the above-described method 300 and the network device 500 according to the embodiment of the present invention. Each unit or module of the network device 700 is respectively used to execute each operation or processing procedure executed by the network device of the above-described method 300.

[0183] FIG. 8 is a schematic configuration diagram of a system-on-chip in an embodiment of the present invention. The system chip 800 in FIG. 8 includes an input interface 801, an output interface 802, at least one processor 803, and a memory 804. The input interface 801, the output interface 802, the processor 803, and the memory 804 are connected to each other by an internal connection path. The processor 803 is configured to execute the code in the memory 804.

[0184] Optionally, when the code is executed, the processor 803 may implement method 200 executed by the terminal device in an embodiment of the method. For the sake of brevity, the description is omitted here.

[0185] Optionally, when the code is executed, the processor 803 may implement method 300 executed by the network device in an embodiment of the method. For the sake of brevity, the description is omitted here.

[0186] Those skilled in the art will recognize that the various example units and algorithm steps described in connection with the embodiments disclosed herein may be implemented in electronic hardware, or in a combination of computer software and electronic hardware. These functions depend on whether they are executed by hardware or software according to the specific application examples and design constraints of the technical solution. Those skilled in the art may use different methods for each specific application to implement the described functions, but such implementations should not be considered as departing from the scope of the present disclosure.

[0187] Those skilled in the art will understand that, for the sake of convenience and brevity of description, the specific operation processes of the systems, devices, and units described above may refer to the corresponding processes in the foregoing method embodiments, where the description is omitted here.

[0188] In some of the embodiments provided in this specification, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways. For example, the above-described device embodiments are merely illustrative. For example, the division of units is merely a division of one logical function, and in actual implementation, there may be other division methods. For example, a plurality of units or components may be combined, integrated into another system, some features may be omitted, or not executed. In other respects, the couplings or direct couplings or communication connections shown or discussed between each other may be indirect couplings or communication connections through some interface, device, or unit, and may be in electrical, mechanical, or other forms.

[0189] The units described as this separation means may or may not be physically separated. The means shown as units may or may not be physical units, may be in one location, or may be distributed among a plurality of network units. Also, the purpose of this embodiment can be implemented by selecting some or all of each part as needed.

[0190] Also, each functional part in each embodiment of the present invention may be integrated into one monitoring unit, each unit may physically exist separately, or two or more units may be integrated into one unit.

[0191] When this function is realized in the form of a software functional unit and sold or used as a stand-alone product, it can be stored in a computer-readable storage medium. Based on such an understanding, the essence of the technical solution of the present invention or the part contributing to the prior art, or the part of the technical solution of the present invention, can be embodied in the form of a software product stored in a storage medium including a plurality of 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 various embodiments of the present invention. It should be noted that as the storage medium, various media capable of storing program codes such as USB disks, removable hard disks, Read-Only Memory, ROM, RAM, magnetic disks, and optical disks can be used.

[0192] As described above, specific embodiments of the present invention have been described. However, the scope of the rights of the present invention is not limited thereto. For those with ordinary knowledge in the technical field to which the present invention pertains, within the scope of the rights of the present invention, changes and substitutions that are considered to belong to the scope of the rights of the present invention can be easily conceived. Therefore, the protection scope of the embodiments of the present invention should conform to the protection scope of the claims.

Claims

1. A method for determining a data transmission frequency band, comprising: a terminal device determining at least one transmission frequency band corresponding to the transmission information based on the transmission information of the terminal device, wherein the transmission information is a format of downlink control information (DCI) or uplink / downlink information, and the transmission frequency band is a BWP; the terminal device determining a transmission frequency band for data transmission in at least one transmission frequency band; the terminal device receiving first control information transmitted from a network device, the first control information being for scheduling the data transmission of the terminal device, and the first control information including the DCI; wherein the terminal device determining a transmission frequency band for data transmission in at least one transmission frequency band comprises: when the at least one transmission frequency band includes a plurality of transmission frequency bands, the terminal device determining a transmission frequency band for data transmission in at least one transmission frequency band based on frequency band information in the DCI; A method for determining a data transmission frequency band.

2. The uplink / downlink information is for indicating whether the uplink data or the downlink data is scheduled by the DCI. The method for determining a data transmission frequency band according to Claim 1.

3. The DCI includes preset bits for indicating a transmission frequency band for the data transmission. The method for determining a data transmission frequency band according to Claim 1 or 2.

4. The preset bits include at most 2 bits. The method for determining a data transmission frequency band according to Claim 3.

5. The number of the preset bits is 0, 1, or 2. The method for determining a data transmission frequency band according to Claim 3.

6. A method for determining a data transmission frequency band, comprising: a network device determining at least one transmission frequency band corresponding to the transmission information of a terminal device, wherein the transmission information is a format of downlink control information (DCI) or uplink / downlink information, and the transmission frequency band is a BWP; the network device determining a transmission frequency band for data transmission in at least one transmission frequency band; The network device further includes transmitting first control information to the terminal device, where the first control information is for scheduling the data transmission of the terminal device, and the first control information includes the DCI. The DCI includes frequency band information. When the at least one transmission frequency band includes a plurality of transmission frequency bands, the frequency band information causes the terminal device to determine a transmission frequency band for data transmission in at least one transmission frequency band. A method for determining a transmission frequency band of data.

7. The uplink / downlink information is for indicating whether the data scheduled by the DCI is uplink data or downlink data. The method for determining a transmission frequency band of data according to claim 6.

8. The DCI includes pre-set bits for indicating a transmission frequency band for the data transmission. The method for determining a transmission frequency band of data according to any one of claims 6 to 7.

9. The pre-set bits include a maximum of 2 bits. The method for determining a transmission frequency band of data according to claim 8.

10. The number of the pre-set bits is 0, 1, or 2. The method for determining a transmission frequency band of data according to claim 8.

11. A terminal device configured to execute the method for determining a transmission frequency band of data according to any one of claims 1 to 5. Terminal device.

12. A network device configured to execute the method for determining a transmission frequency band of data according to any one of claims 6 to 10. Network device.

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