Communication method and communication device

Abstract

The invention provides a communication method and a communication device. In the method, the BWP in the same link direction as the carrier is configured for the terminal equipment, and a plurality of BWPs are allowed to be activated at the same time, so that the use efficiency of frequency resources can be improved, the data transmission rate of the terminal equipment is improved, and the uplink and downlink transmission performance of the terminal equipment is improved.

Description

Technical Field

[0001] This application relates to the field of wireless communication technologies, and in particular, to a communication method and a communication device. Background Art

[0002] To support terminal devices with different bandwidth capabilities and consider energy saving of terminal devices, the new radio (NR) introduces the concept of a bandwidth part (BWP). A BWP is a continuous segment of resources in the frequency domain, including an uplink BWP and a downlink BWP, which are used for uplink transmission and downlink transmission respectively.

[0003] Currently, the NR protocol defines that uplink transmission is completely carried out within the uplink BWP, and downlink transmission is completely carried out within the downlink BWP. If a terminal device receives multiple BWP configurations, at the same time, the terminal device can only operate on one of the BWPs, and this BWP is called the active BWP.

[0004] The above BWP configuration method limits the maximum transmission rate of the terminal device, resulting in poor uplink and downlink transmission performance of the terminal device. Summary of the Invention

[0005] Embodiments of this application provide a communication method and a communication device to improve the uplink and downlink transmission performance of a terminal device.

[0006] In a first aspect, embodiments of this application provide a communication method, which can be executed by a network device or a module (such as a chip) in the network device. The method includes: sending first configuration information to a terminal device, where the first configuration information is used to configure a first carrier and a second carrier for the terminal device; sending second configuration information to the terminal device, where the second configuration information is used to configure X BWPs for the terminal device, and X is an integer greater than 1; where the first carrier, the second carrier, and the X BWPs have the same link direction, the first carrier is located in a first sub-band of a first frequency band, the second carrier is located in a second sub-band of the first frequency band, and the first sub-band and the second sub-band are discontinuous; M of the X BWPs are located within the first carrier, and the other X - M of the X BWPs are located within the second carrier; N of the X BWPs are simultaneously activated, M is a positive integer, X - M is a positive integer, and N is an integer greater than 1.

[0007] In the above solution, BWPs with the same link direction as the carrier are configured for the terminal device, and multiple BWPs are allowed to be simultaneously activated, thereby improving the utilization efficiency of frequency resources, increasing the data transmission rate of the terminal device, and improving the uplink and downlink transmission performance of the terminal device.

[0008] In a possible implementation method, some of the N BWPs are located within the first carrier, and the other part is located within the second carrier.

[0009] The above solution can enable the terminal device to flexibly use two non - contiguous sub - bands of a frequency band for transmission in the same link direction. Especially when the first frequency band is an FDD frequency band, it can enable the terminal device to use two sub - bands with different link directions to simultaneously perform transmission in the same link direction.

[0010] In a possible implementation method, the identifier of each of the X BWPs includes a first part and a second part. The first parts of the identifiers of the X BWPs are the same, and the second parts of the identifiers of the X BWPs are different from each other.

[0011] In the above solution, the identifiers of the configured X BWPs all include a first part and a second part, and the first parts of the identifiers of the X BWPs are all the same, thereby enabling the association between the X BWPs. In this way, there is no need to add new signaling to associate the X BWPs, so the signaling overhead can be reduced.

[0012] In a possible implementation method, the method further includes: sending downlink control information (DCI) to the terminal device, where the DCI is used to activate the N BWPs.

[0013] In the above solution, by activating the N BWPs through DCI, dynamic activation of BWPs can be achieved, increasing the flexibility of the solution.

[0014] In a possible implementation method, the BWP indication field of the DCI includes a first field and a second field. The first field is used to indicate the first part of the identifiers of the N BWPs, and the second field is used to indicate the second part of the identifiers of the N BWPs.

[0015] Among them, since the N BWP identifiers contain the same first part, the first field only needs to indicate one first part. And since the identifiers of different BWPs contain different second parts, the second field needs to indicate the second part of the identifier of each of the N BWPs.

[0016] In a possible implementation method, the second field includes X bits. The X bits correspond to the X BWPs one by one. N of the X bits take a first value, and the first value indicates activating the corresponding BWP. The other X - N bits of the X bits take a second value, and the second value indicates not activating the corresponding BWP.

[0017] In a possible implementation method, the second domain includes a second part of the identifiers of the N BWPs.

[0018] In a possible implementation method, the DCI includes a first BWP indication field and a second BWP indication field. The first BWP indication field is used to indicate a first part of the identifiers of the N BWPs, and the second BWP indication field is used to indicate a second part of the identifiers of the N BWPs.

[0019] Wherein, since the N BWP identifiers include the same first part, the first BWP indication field only needs to indicate one first part. However, the identifiers of different BWPs include different second parts, so the second BWP indication field needs to indicate the second part of the identifier of each BWP among the N BWPs.

[0020] In a possible implementation method, the second BWP indication field includes X bits. The X bits correspond one-to-one to the X BWPs. N bits among the X bits take a first value, and the first value indicates activating the corresponding BWP. The other X - N bits among the X bits take a second value, and the second value indicates not activating the corresponding BWP.

[0021] In the above solution, by associating X bits with X BWPs to activate the BWPs, it is possible to use fewer bits to indicate the activated BWPs and reduce signaling overhead.

[0022] In a possible implementation method, the second BWP indication field includes a second part of the identifiers of the N BWPs.

[0023] In the above solution, by carrying the identifiers of the BWPs to indicate the activated BWPs, it is possible to use fewer bits to indicate the activated BWPs when X is large and N is small, thereby reducing signaling overhead.

[0024] In a possible implementation method, the method further includes: sending a first signaling and DCI to the terminal device. The first signaling is used to indicate a first part of the identifiers of N BWPs among the X BPWs, and the DCI is used to indicate a second part of the identifiers of the N BWPs. The first signaling is a radio resource control (RRC) signaling, a system information block (SIB), a master information block (MIB), or a medium access control control element (MACCE).

[0025] In a possible implementation method, each of the X BWPs has a dedicated identifier.

[0026] In a possible implementation method, the method further includes: sending DCI to the terminal device, where the DCI is used to activate the N BWPs.

[0027] In the above solution, by activating the N BWPs through DCI, dynamic activation of BWPs can be achieved, increasing the flexibility of the solution.

[0028] In a possible implementation method, the DCI includes N BWP indication fields, and each BWP indication field in the N BWP indication fields is used to indicate the identifier of one BWP among the N BWPs.

[0029] In a possible implementation method, the DCI includes a BWP indication field, the BWP indication field includes X bits, the X bits correspond one-to-one to the X BWPs, N of the X bits take a first value, the first value indicates activating the corresponding BWP, and the other X - N bits of the X bits take a second value, the second value indicates not activating the corresponding BWP.

[0030] In the above solution, by associating the X BWPs through X bits to activate the BWPs, it is possible to use fewer bits to indicate the activated BWPs, reducing signaling overhead.

[0031] In a possible implementation method, the DCI includes a BWP indication field, and the BWP indication field includes the identifiers of the N BWPs.

[0032] In the above solution, by indicating the activated BWP by carrying the identifier of the BWP, it is possible to use fewer bits to indicate the activated BWP when X is large and N is small, thereby reducing signaling overhead.

[0033] Second aspect, an embodiment of the present application provides a communication method, which can be executed by a terminal device or a module (such as a chip) in the terminal device. The method includes: receiving first configuration information from a network device, where the first configuration information is used to configure a first carrier and a second carrier for the terminal device; receiving second configuration information from the network device, where the second configuration information is used to configure X BWPs for the terminal device, and X is an integer greater than 1; wherein, the link directions of the first carrier, the second carrier, and the X BWPs are the same, the first carrier is located in a first sub-band of a first frequency band, the second carrier is located in a second sub-band of the first frequency band, and the first sub-band and the second sub-band are discontinuous; M of the X BWPs are located within the first carrier, and the other X - M of the X BWPs are located within the second carrier; N of the X BWPs are simultaneously activated, M is a positive integer, X - M is a positive integer, and N is an integer greater than 1.

[0034] In the above solution, BWPs with the same link direction as the carrier are configured for the terminal device, and multiple BWPs are allowed to be simultaneously activated, thereby improving the utilization efficiency of frequency resources, increasing the data transmission rate of the terminal device, and improving the uplink and downlink transmission performance of the terminal device.

[0035] In a possible implementation method, some of the multiple BWPs are located within the first carrier, and the other part is located within the second carrier.

[0036] In the above solution, the frequency domain positions of the BWPs can be flexibly configured.

[0037] In a possible implementation method, the identifier of each of the X BWPs includes a first part and a second part, the first parts of the identifiers of the X BWPs are the same, and the second parts of the identifiers of the X BWPs are different from each other.

[0038] In a possible implementation method, the method further includes: receiving DCI from the network device, where the DCI is used to activate the N BWPs.

[0039] In the above solution, by activating N BWPs through DCI, dynamic activation of BWPs can be achieved, increasing the flexibility of the solution.

[0040] In a possible implementation method, the BWP indication field of the DCI includes a first field and a second field, the first field is used to indicate the first part of the identifiers of the N BWPs, and the second field is used to indicate the second part of the identifiers of the N BWPs.

[0041] Among them, since the N BWP identifiers contain the same first part, the first field only needs to indicate one first part. However, the identifiers of different BWPs contain different second parts. Therefore, the second field needs to indicate the second part of each BWP identifier among the N BWP identifiers.

[0042] In a possible implementation method, the second field includes X bits, and the X bits correspond to the X BWPs one by one. N bits among the X bits take a first value, and the first value indicates activating the corresponding BWP. The other X - N bits among the X bits take a second value, and the second value indicates not activating the corresponding BWP.

[0043] In the above solution, by associating X bits with X BWPs to activate the BWP, it is possible to use fewer bits to indicate the activated BWP and reduce the signaling overhead.

[0044] In a possible implementation method, the second field includes the second part of the identifiers of the N BWPs.

[0045] In the above solution, by carrying the identifiers of the BWPs to indicate the activated BWP, it is possible to use fewer bits to indicate the activated BWP when X is large and N is small, thereby reducing the signaling overhead.

[0046] In a possible implementation method, the DCI includes a first BWP indication field and a second BWP indication field. The first BWP indication field is used to indicate the first part of the identifiers of the N BWPs, and the second BWP indication field is used to indicate the second part of the identifiers of the N BWPs.

[0047] Among them, since the N BWP identifiers contain the same first part, the first BWP indication field only needs to indicate one first part. However, the identifiers of different BWPs contain different second parts. Therefore, the second BWP indication field needs to indicate the second part of each BWP identifier among the N BWP identifiers.

[0048] In a possible implementation method, the second BWP indication field includes X bits, and the X bits correspond to the X BWPs one by one. N bits among the X bits take a first value, and the first value indicates activating the corresponding BWP. The other X - N bits among the X bits take a second value, and the second value indicates not activating the corresponding BWP.

[0049] In the above solution, by associating X bits with X BWPs to activate the BWP, it is possible to use fewer bits to indicate the activated BWP and reduce the signaling overhead.

[0050] In a possible implementation method, the second BWP indication field includes a second part of the identifiers of the N BWPs.

[0051] In the above solution, by indicating the active BWPs in the way of carrying the identifiers of the BWPs, it is possible to use fewer bits to indicate the active BWPs when X is large and N is small, thereby reducing the signaling overhead.

[0052] In a possible implementation method, the method further includes: receiving a first signaling and DCI from the network device, where the first signaling is used to indicate a first part of the identifiers of N BWPs among the X BWPs, the DCI is used to indicate a second part of the identifiers of the N BWPs, and the first signaling is an RRC signaling, SIB, MIB or MAC CE.

[0053] In a possible implementation method, each of the X BWPs has a dedicated identifier.

[0054] In a possible implementation method, the method further includes: receiving DCI from the network device, where the DCI is used to activate the N BWPs.

[0055] In the above solution, by activating N BWPs through DCI, it is possible to dynamically activate BWPs, increasing the flexibility of the solution.

[0056] In a possible implementation method, the DCI includes N BWP indication fields, and each BWP indication field in the N BWP indication fields is used to indicate the identifier of one BWP among the N BWPs.

[0057] In a possible implementation method, the DCI includes a BWP indication field, the BWP indication field includes X bits, the X bits correspond one-to-one to the X BWPs, N bits among the X bits take a first value, the first value indicates activating the corresponding BWP, and the other X - N bits among the X bits take a second value, the second value indicates not activating the corresponding BWP.

[0058] In the above solution, by activating BWPs in the way of associating X bits with X BWPs, it is possible to use fewer bits to indicate the active BWPs, and the signaling overhead can be reduced.

[0059] In a possible implementation method, the DCI includes a BWP indication field, and the BWP indication field includes the identifiers of the N BWPs.

[0060] In the above solution, by indicating the active BWPs in the way of carrying the identifiers of the BWPs, it is possible to use fewer bits to indicate the active BWPs when X is large and N is small, thereby reducing the signaling overhead.

[0061] Any implementation method based on the first or second aspect above:

[0062] In a possible implementation method, some or all of the following parameters of the X BWPs are the same: the frequency resource parameters of the BWP, the parameters of the channel, or the parameters of the signal.

[0063] The above solution, since some or all of the parameters configured for the X BWPs are the same, has the following beneficial effects: First, the signaling overhead can be reduced when configuring the parameters; Second, the memory specification and implementation complexity of the terminal device can be reduced; Third, when switching between the X BWPs, since there are common parameters, the switching delay can be reduced.

[0064] In a possible implementation method, the channel includes one or more of the following: physical downlink shared channel (PDSCH), physical downlink control channel (PDCCH), physical uplink shared channel (PUSCH), physical random access channel (PRACH), or physical uplink control channel (PUCCH); the signal includes one or more of the following: demodulation reference signal (DMRS) of PDSCH, DMRS of PDCCH, DMRS of PUSCH, DMRS of PUCCH, phase tracking reference signal (PTRS) of PDSCH, PTRS of PUSCH, channel state information-reference signal (CSI-RS), tracking reference signal (TRS), sounding reference signal (SRS), or synchronization signal block (SSB).

[0065] In a possible implementation method, the handover delay between the X BWPs is less than a first threshold; where when the subcarrier spacing is 15 kHz, the first threshold is equal to the duration of 1 time slot or the duration of 3 time slots; when the subcarrier spacing is 30 kHz, the first threshold is equal to the duration of 2 time slots or the duration of 5 time slots; when the subcarrier spacing is 60 kHz, the first threshold is equal to the duration of 3 time slots or the duration of 9 time slots; when the subcarrier spacing is 120 kHz, the first threshold is equal to the duration of 6 time slots or the duration of 18 time slots.

[0066] In the above solution, when the X BWPs are mutually handed over, the handover delay will be less than the handover delay between BWPs in the existing protocol, that is, the handover delay can be reduced.

[0067] In a third aspect, an embodiment of the present application provides a communication method, which can be executed by a network device or a module (such as a chip) in the network device. The method includes: sending first configuration information to a terminal device, where the first configuration information is used to configure a first carrier and a second carrier for the terminal device; sending second configuration information to the terminal device, where the second configuration information is used to configure X BWPs for the terminal device, and X is a positive integer; where the link directions of the first carrier, the second carrier, and the X BWPs are the same, the first carrier is located in a first sub-band of a first frequency band, the second carrier is located in a second sub-band of the first frequency band, and the first sub-band and the second sub-band are discontinuous; the X BWPs include a first BWP, and the frequency resources of the first BWP are continuous and overlap with both the first carrier and the second carrier; N of the X BWPs are simultaneously activated, and N is an integer greater than 1.

[0068] In the above solution, BWPs with the same link direction as the carrier are configured for the terminal device, and multiple BWPs are allowed to be simultaneously activated, so that the utilization efficiency of frequency resources can be improved, the data transmission rate of the terminal device is increased, and the uplink and downlink transmission performance of the terminal device is improved.

[0069] Fourthly, an embodiment of the present application provides a communication method, which can be executed by a terminal device or a module (such as a chip) in the terminal device. The method includes: receiving first configuration information from a network device, where the first configuration information is used to configure a first carrier and a second carrier for the terminal device; receiving second configuration information from the network device, where the second configuration information is used to configure X BWPs for the terminal device, and X is a positive integer; wherein, the link directions of the first carrier, the second carrier, and the X BWPs are the same, the first carrier is located in a first sub-band of a first frequency band, the second carrier is located in a second sub-band of the first frequency band, and the first sub-band and the second sub-band are discontinuous; the X BWPs include a first BWP, the frequency resources of the first BWP are continuous and overlap with both the first carrier and the second carrier; N of the X BWPs are simultaneously activated, and N is an integer greater than 1.

[0070] In the above solution, a BWP with the same link direction as the carrier is configured for the terminal device, and multiple BWPs are allowed to be simultaneously activated, so as to improve the utilization efficiency of frequency resources, increase the data transmission rate of the terminal device, and improve the uplink and downlink transmission performance of the terminal device.

[0071] Based on the above third or fourth aspect:

[0072] In a possible implementation method, the frequency-domain starting position of the first BWP is located in the carrier with the lower frequency position among the first carrier and the second carrier.

[0073] In a possible implementation method, the second configuration information includes indication information, where the indication information is used to indicate the carrier where the frequency-domain starting position of the first BWP is located.

[0074] In the above solution, by using the indication information to explicitly indicate the carrier where the frequency-domain starting position of the first BWP is located, the accuracy of the indication can be increased.

[0075] In a possible implementation method, the second configuration information includes the in-carrier offset of the first BWP and the bandwidth size of the first BWP.

[0076] In the above solution, by explicitly carrying the in-carrier offset of the first BWP and the bandwidth size of the first BWP in the second configuration information, the accuracy of the configuration can be improved.

[0077] In a possible implementation method, the second configuration information includes a resource indicator value (RIV) and a first parameter value. The RIV and the first parameter are used to determine the in-carrier offset of the first BWP and the bandwidth size of the first BWP. The first parameter is not less than the size of the frequency resource range occupied by the first carrier and the second carrier.

[0078] In the above solution, configuration parameters (i.e., RIV and the first parameter) that can be used to determine the in-carrier offset of the first BWP and the bandwidth size of the first BWP are carried in the second configuration information. Since the number of bits occupied by the RIV and the first parameter is small, signaling overhead can be reduced.

[0079] In a possible implementation method, only the valid resources within the first BWP can be used for data transmission. The valid resources within the first BWP refer to the overlapping part of the frequency resources of the first BWP and the frequency resources of the first carrier and / or the second carrier. The valid resources within the first BWP include first valid resources located in the first carrier and / or second valid resources located in the second carrier.

[0080] In a possible implementation method, the physical resource blocks (PRBs) within the first BWP are numbered continuously; alternatively, the PRBs within the valid resources of the first BWP are numbered continuously.

[0081] In a possible implementation method, the size of the resource block group (RBG) is determined according to the number of PRBs included in the valid resources within the first BWP.

[0082] In a possible implementation method, the first precoding codebook is used for PDSCH transmission or PUSCH transmission within the first valid resources, and the second precoding codebook is used within the second valid resources.

[0083] In a possible implementation method, the first resource is used for downlink measurement and / or the second resource is used for measurement reporting within the first valid resources, and the third resource is used for downlink measurement and / or the fourth resource is used for measurement reporting within the second valid resources; wherein, the first resource is different from the third resource.

[0084] In the above solution, downlink measurement and reporting are independently performed within different valid resources, which can increase the flexibility and accuracy of measurement and reporting.

[0085] In a possible implementation method, the fifth resource is used for uplink measurement within the first valid resource, and the sixth resource is used for uplink measurement within the second valid resource; wherein, the fifth resource is different from the sixth resource.

[0086] In the above solution, independent uplink measurements are performed within different valid resources, which can increase the flexibility and accuracy of the measurements.

[0087] In a fifth aspect, an embodiment of the present application provides a communication device, which may be a network device or a module (such as a chip) in a network device. The device has the function of implementing any implementation method of the first aspect or the third aspect above. This function can be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions.

[0088] In a sixth aspect, an embodiment of the present application provides a communication device, which may be a terminal device or a module (such as a chip) in a terminal device. The device has the function of implementing any implementation method of the second aspect or the fourth aspect above. This function can be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions.

[0089] In a seventh aspect, an embodiment of the present application provides a communication device, including units or means for executing each step of any implementation method in the first aspect to the fourth aspect above.

[0090] In an eighth aspect, an embodiment of the present application provides a communication device, including a processor and an interface circuit. The processor is used to communicate with other devices through the interface circuit and execute any implementation method in the first aspect to the fourth aspect above. The processor includes one or more.

[0091] Optionally, the communication device may further include a memory for storing computer instructions. The memory is coupled to the processor, and the processor executes the computer instructions stored in the memory so that the device executes any implementation method in the first aspect to the fourth aspect above.

[0092] In a ninth aspect, an embodiment of the present application further provides a computer program product, which includes a computer program or instructions. When the computer program or instructions are run on a communication device, any implementation method in the first aspect to the fourth aspect above is executed.

[0093] In a tenth aspect, an embodiment of the present application further provides a computer-readable storage medium, in which instructions are stored. When it runs on a communication device, any implementation method in the first aspect to the fourth aspect above is executed.

[0094] In the eleventh aspect, an embodiment of the present application further provides a chip system, including: a processor configured to execute any implementation method in the first aspect to the fourth aspect above. BRIEF DESCRIPTION OF THE DRAWINGS

[0095] FIG. 1(a) is a schematic diagram of the architecture of a communication system to which an embodiment of the present application is applied;

[0096] FIG. 1(b) shows a schematic diagram of a network device;

[0097] Figure 2 It is an example diagram for TDD;

[0098] Figure 3 It is an example diagram for full-duplex TDD;

[0099] Figure 4 It is an example diagram for half-duplex TDD;

[0100] Figure 5 It is an example diagram for the reconstruction scheme of the FDD spectrum;

[0101] Figure 6 It is another example diagram for the reconstruction scheme of the FDD spectrum;

[0102] Figure 7 It is a schematic diagram for the uplink and downlink BWP configuration of the FDD frequency;

[0103] Figure 8 It is a schematic diagram for the uplink and downlink BWP configuration of the TDD frequency;

[0104] Figure 9 It is an example diagram for configuring BWP on the FDD spectrum;

[0105] Figure 10 It is a schematic diagram of the process of a communication method provided by an embodiment of the present application;

[0106] Figure 11 It is an example diagram of the BWP configuration provided by an embodiment of the present application;

[0107] Figure 12 It is an example diagram of the BWP configuration provided by an embodiment of the present application;

[0108] Figure 13 It is an example of the first BWP;

[0109] Figure 14 It is an example of the first BWP;

[0110] Figure 15 It is an example of the first BWP;

[0111] Figure 16An example of a first valid resource and a second valid resource;

[0112] Figure 17 A schematic structural diagram of a communication device provided by an embodiment of the present application;

[0113] Figure 18 A schematic structural diagram of a communication device provided by an embodiment of the present application. Detailed implementation manners

[0114] FIG. 1(a) is a schematic structural diagram of a communication system to which an embodiment of the present application is applied. The communication system shown in FIG. 1(a) includes a radio access network 100 and a core network 200. Optionally, the communication system further includes the Internet 300. Among them, the radio access network 100 may include at least one network device (such as 110a and 110b in FIG. 1(a)), and may further include at least one terminal device (such as 120a-120j in FIG. 1(a)). The terminal device is connected to the network device in a wireless manner, and the network device is connected to the core network in a wireless or wired manner. The core network device and the network device may be independent different physical devices, or the functions of the core network device and the logical functions of the network device may be integrated on the same physical device, or the functions of part of the core network device and part of the network device may be integrated on a physical device. The terminal devices and the network devices may be connected to each other in a wired or wireless manner. FIG. 1(a) is only a schematic diagram, and the communication system may further include other network devices, such as wireless relay devices and wireless backhaul devices, which are not shown in FIG. 1(a).

[0115] A network device is an access device through which a terminal device accesses a communication system by means of wire or wireless. The network device may be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next generation NodeB (gNB) in a 5th generation (5G) mobile communication system, a next generation NodeB in a 6th generation (6G) mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system, etc.; it may also be a module or unit that completes some functions of the base station. For example, it may be a central unit (CU), a distributed unit (DU), or a radio unit (RU). The network device may be a macro base station (such as 110a in Fig. 1(a)), a micro base station or an indoor station (such as 110b in Fig. 1(a)), or a relay node or a donor node, etc. The embodiments of the present application do not limit the specific technologies and specific device forms adopted by the network device.

[0116] A terminal device is a device with wireless transceiver functions that can send signals to or receive signals from a network device. The terminal device includes, but is not limited to, a terminal device, a terminal, a user equipment (UE), a mobile station, a mobile terminal, etc. The terminal device can be widely applied to various scenarios, such as device-to-device (D2D), vehicle to everything (V2X) communication, machine-type communication (MTC), Internet of Things (IOT), virtual reality, augmented reality, industrial control, autonomous driving, remote medical treatment, smart grid, smart furniture, smart office, smart wearables, smart transportation, smart city, etc. Specifically, the terminal device may be a mobile phone, a tablet computer, a computer with wireless transceiver functions, a wearable device, a vehicle, an airplane, a ship, a robot, a robotic arm, a smart home device, etc. The embodiments of the present application do not limit the specific technologies and specific device forms adopted by the terminal device.

[0117] The network device and the terminal device can be fixed in position or movable. The network device and the terminal device can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed on airplanes, balloons, and artificial satellites. The embodiments of the present application do not limit the application scenarios of the network device and the terminal device.

[0118] The roles of the network device and the terminal device can be relative. For example, the helicopter or drone 120i in Fig. 1(a) can be configured as a mobile network device. For the terminal devices 120j that access the radio access network 100 through 120i, the terminal device 120i is a network device; but for the network device 110a, 120i is a terminal device, that is, the communication between 110a and 120i is through the radio air interface protocol. Of course, the communication between 110a and 120i can also be through the interface protocol between network devices. At this time, relative to 110a, 120i is also a network device. Therefore, the network device and the terminal device can both be uniformly referred to as communication devices. 110a and 110b in Fig. 1(a) can be referred to as communication devices with network device functions, and 120a - 120j in Fig. 1(a) can be referred to as communication devices with terminal device functions.

[0119] The communication between the network device and the terminal device, between the network device and the network device, and between the terminal device and the terminal device can be through authorized spectrum, can be through unlicensed spectrum, or can be through both authorized spectrum and unlicensed spectrum at the same time; it can communicate through the spectrum below 6 gigahertz (GHz), can communicate through the spectrum above 6 GHz, or can also use the spectrum below 6 GHz and the spectrum above 6 GHz at the same time. The embodiments of the present application do not limit the spectrum resources used for wireless communication.

[0120] In the embodiments of the present application, the functions of the network device can also be executed by modules (such as chips) in the network device, or can be executed by a control subsystem including network device functions. Here, the control subsystem including network device functions can be a control center in the above application scenarios such as smart grid, industrial control, intelligent transportation, and smart city. The functions of the terminal device can also be executed by modules (such as chips) in the terminal device, or can be executed by a device including terminal device functions.

[0121] In this application, the network device sends downlink signals or downlink information to the terminal device, and the downlink information is carried on the downlink channel; the terminal device sends uplink signals or uplink information to the network device, and the uplink information is carried on the uplink channel. In order to communicate with the network device, the terminal device needs to establish a radio connection with a cell controlled by the network device. The cell that has established a radio connection with the terminal device is called the serving cell of the terminal device.

[0122] Figure 1(b) shows a schematic diagram of a network device. As shown in Figure 1(b), the network device includes one or more CUs, one or more DUs, and one or more RUs. For clarity, only one CU, DU, and RU are shown in Figure 1(b). Among them, the CU is used to connect to the core network and one or more DUs. Optionally, the CU may have some functions of the core network. The CU may include a CU-control plane (CP) and a CU-user plane (UP).

[0123] The CU and the DU can be configured according to the protocol layer functions of the wireless network they implement: for example, the CU is configured to implement the functions of the protocol layers above the packet data convergence protocol (PDCP) layer (such as the radio resource control (RRC) layer and / or the service data adaptation protocol (SDAP) layer, etc.); the DU is configured to implement the protocol layers below the PDCP layer (such as the radio link control (RLC) layer, the medium access control (MAC) layer, and / or the physical (PHY) layer, etc.). Another example is that the CU is configured to implement the protocol layers above the PDCP layer (such as the RRC layer and / or the SDAP layer), and the DU is configured to implement the protocol layers at and below the PDCP layer (such as the RLC layer, the MAC layer, and / or the PHY layer, etc.).

[0124] The above configurations of the CU and DU are merely examples, and the functions of the CU and DU can also be configured as needed. For example, the CU or DU can be configured to have more protocol layer functions, or the CU or DU can be configured to have partial processing functions of the protocol layer. For example, part of the functions of the RLC layer and the functions of the protocol layers above the RLC layer are set in the CU, and the remaining functions of the RLC layer and the functions of the protocol layers below the RLC layer are set in the DU. Another example is that the functions of the CU or DU can be divided according to service types or other system requirements. For example, divided by latency, the functions that require a small latency for processing time are set in the DU, and the functions that do not need to meet this latency requirement are set in the CU.

[0125] The DU and RU can cooperate to jointly implement the functions of the PHY layer. One DU can be connected to one or more RUs. The functions of the DU and RU can be configured in various ways according to the design. For example, the DU is configured to implement baseband functions, and the RU is configured to implement mid-RF functions. Another example is that the DU is configured to implement the high-layer functions in the PHY layer, and the RU is configured to implement the low-layer functions in the PHY layer or implement the low-layer functions and RF functions. The high-layer functions in the physical layer can include part of the functions of the physical layer, and this part of the functions is closer to the MAC layer. The low-layer functions in the physical layer can include another part of the functions of the physical layer, and this part of the functions is closer to the mid-RF side.

[0126] The CU and DU can be set separately, or they can also be included in the same network element, such as the baseband unit (BBU). The RU can be included in the radio frequency device or radio frequency unit, such as included in the remote radio unit (RRU), active antenna unit (AAU), or remote radio head (RRH). In different systems, the CU, DU, or RU may also have different names, but those skilled in the art can understand their meanings. For example, in the ORAN system, the CU can also be called O-CU (Open CU), the DU can also be called O-DU, and the RU can also be called O-RU. Any one of the CU (or CU-CP, CU-UP), DU, and RU in this application can be implemented through software modules, hardware modules, or a combination of software modules and hardware modules.

[0127] To facilitate the understanding of the present invention, the background related to the present invention will be introduced and explained below.

[0128] I. Time Division Duplex (TDD) and Frequency Division Duplex (FDD)

[0129] Currently, according to the separation of uplink transmission and downlink transmission in time and / or frequency, New Radio (NR) supports TDD and FDD.

[0130] TDD means that uplink transmission and downlink transmission use the same frequency but are separated in time. The spectrum supporting TDD operation can also be called TDD spectrum. For a carrier, since the TDD spectrum has only one continuous bandwidth for uplink transmission and downlink transmission, it is sometimes also called unpaired spectrum. Figure 2 is an example diagram of TDD. Among them, Figure 3 the "U" in represents uplink transmission, the "D" represents downlink transmission, and "f UL+DL " represents the frequency used for uplink transmission and downlink transmission.

[0131] FDD supports uplink transmission and downlink transmission using different frequencies. According to whether the uplink and downlink transmissions are simultaneous, it can be further divided into full-duplex FDD and half-duplex FDD. The spectrum supporting FDD operation can also be called FDD spectrum. For a carrier, since the FDD spectrum has a pair of discontinuous bandwidths respectively for uplink transmission and downlink transmission, it is sometimes also called paired spectrum. Figure 3 is an example diagram of full-duplex TDD, Figure 4 is an example diagram of half-duplex TDD. Among them, Figure 3 and Figure 4 the "U" in represents uplink transmission, the "D" represents downlink transmission, "f UL " represents the frequency used for uplink transmission, and "f DL " represents the frequency used for downlink transmission.

[0132] The existing FDD spectrum mainly has the following problems: 1) In the FDD spectrum, the uplink bandwidth and downlink bandwidth are fixedly and symmetrically allocated. However, at the current stage, the downlink services are dominant and the uplink services are insufficient in wide area networks, resulting in low uplink spectrum utilization rate, low overall spectrum efficiency, and low downlink throughput; 2) In the existing FDD spectrum, the uplink transmission and downlink transmission are on different frequencies, resulting in low reciprocity between the uplink channel and the downlink channel. The acquisition of channel information in the FDD system becomes a shortcoming, and the improvement of spectrum efficiency is limited. For the above reasons, there can be some new usage methods for the FDD spectrum in the future evolution process, including performing downlink transmission in the uplink spectrum, or performing uplink transmission in the downlink spectrum, etc. Figure 5It is an example diagram of the reconstruction scheme for the FDD spectrum. It can be seen that the uplink spectrum can be used for downlink transmission. Figure 6 It is another example diagram of the reconstruction scheme for the FDD spectrum. It can be seen that the downlink spectrum can be used for uplink transmission, and the uplink spectrum can be used for downlink transmission. Among them, Figure 5 and Figure 6 the meanings of "U", "D", "f UL ", "f DL " are the same as those in Figure 3 . In this way, on the one hand, more resources can be provided for downlink transmission, and on the other hand, the uplink-downlink channel reciprocity can be enhanced to improve the transmission performance.

[0133] II. Bandwidth Part (BWP)

[0134] To support terminal devices with different bandwidth capabilities and consider reasons such as energy saving of terminal devices, the concept of BWP is introduced in NR. BWP is a continuous segment of resources in the frequency domain, including uplink BWP and downlink BWP, which are used for uplink transmission and downlink transmission respectively.

[0135] In the initial access phase, the network device configures the initial uplink BWP and the initial downlink BWP for the terminal device. After entering the radio resource control (RRC) connected state, the network device configures one or more dedicated uplink BWPs and downlink BWPs for the terminal device. Currently, the NR protocol defines that uplink transmission is completely carried out within the uplink BWP, and downlink transmission is completely carried out within the downlink BWP. If the terminal device receives multiple BWP configurations, at the same time, the terminal device can only work on one of the BWPs, and this BWP is called the active BWP. Since the terminal device performs data transmission based on the BWP, most of the parameters for the terminal device's data transmission are configured based on the BWP, such as physical layer parameters, high-layer parameters, etc.

[0136] In the existing protocol, it is stipulated that the BWP can only be configured within the corresponding carrier bandwidth, that is, the uplink BWP is configured within the uplink carrier bandwidth, and the downlink BWP is configured within the downlink carrier bandwidth. Therefore, for the FDD system, the uplink BWP can only be configured in the uplink spectrum, and the downlink BWP can only be configured in the downlink spectrum. Figure 7 It is a schematic diagram of the uplink and downlink BWP configurations for the FDD frequency. It can be seen that downlink BWP#0 and downlink BWP#X are configured in the downlink carrier, and uplink BWP#0 and uplink BWP#Y are configured in the uplink carrier.

[0137] For the TDD system, in addition, the protocol also stipulates that the uplink BWP and the downlink BWP appear in pairs, and the center frequencies of a pair of uplink BWP and downlink BWP must be the same, while the bandwidth size has no limit.Figure 8 Schematic diagram of the uplink and downlink BWP configurations for TDD frequencies. It can be seen that uplink BWP #0 and downlink BWP #0 are a pair of BWPs with the same center frequency. Uplink BWP #X and downlink BWP #X are a pair of BWPs with the same center frequency.

[0138] To support new usage modes of FDD spectra, i.e., supporting uplink transmission in the downlink spectrum and / or supporting downlink transmission in the uplink spectrum, how network devices configure the BWPs for uplink and downlink transmissions for terminal devices remains to be solved.

[0139] In a possible implementation, both the uplink carrier and the downlink carrier of FDD are processed as TDD carriers, i.e., both the downlink BWP and the uplink BWP are configured in the uplink and downlink carriers of FDD, and the center frequencies of the upper and lower BWPs are kept the same. Figure 9 An example diagram for configuring BWPs on the FDD spectrum. In this example, it is taken that one downlink BWP and one uplink BWP are configured in each carrier. Refer to Figure 9 , uplink BWP #0 and downlink BWP #0 are configured in the downlink carrier, and the center frequencies of uplink BWP #0 and downlink BWP #0 are the same. Uplink BWP #1 and downlink BWP #1 are configured in the uplink carrier, and the center frequencies of uplink BWP #1 and downlink BWP #1 are the same.

[0140] However, the above usage modes may have the following problems:

[0141] Problem 1: Currently, the protocol stipulates that for a terminal device, in the same link direction, only one BWP can be activated simultaneously. Therefore, the above BWP configuration method enables the terminal device to use only one BWP in either the uplink carrier or the downlink carrier for data transmission at a certain time, resulting in the terminal device being able to use only the resources of one carrier for transmission in the same link direction, and the maximum transmission rate of the terminal device is limited.

[0142] Problem 2: Currently, the protocol stipulates that there is a relatively large handover delay when the activated BWP switches. During the handover delay, the terminal device cannot perform any uplink or downlink data transmission. Specifically, the existing BWP handover delay values are shown in Table 1.

[0143] Table 1

[0144]

[0145] It can be seen that the existing BWP switching delay is at least 1 slot, or even longer. Combining the above BWP configuration method for FDD spectrum, if the active BWP of the terminal device is switched from the BWP in one carrier to the BWP in another carrier, the delay is large and there is data interruption, making it impossible for the terminal device to quickly switch between the two carriers to obtain a greater frequency diversity gain, achieve fast interference avoidance, and is also not conducive to fast load balancing on the two carriers, etc.

[0146] To solve the above problems, the present application provides corresponding embodiments, which will be specifically introduced below.

[0147] Figure 10 It is a schematic flowchart of a communication method provided by an embodiment of the present application. This method is executed by a network device or a module of the network device (such as a chip), and a terminal device or a module of the terminal device (such as a chip). The following takes the network device and the terminal device executing this method as an example for illustration.

[0148] This method includes the following steps:

[0149] Step 1001, the network device sends first configuration information to the terminal device. Correspondingly, the terminal device receives the first configuration information.

[0150] This first configuration information is used to configure a first carrier and a second carrier for the terminal device. The link directions of the first carrier and the second carrier are the same, for example, both are uplink carriers or both are downlink carriers. Here, the link direction refers to the transmission direction of data or signaling, including the uplink direction and the downlink direction.

[0151] Exemplarily, the first carrier and the second carrier belong to the same cell.

[0152] In one implementation method, the first carrier is located in the first sub-band of the first frequency band, the second carrier is located in the second sub-band of the first frequency band, and the first sub-band and the second sub-band are discontinuous.

[0153] In another implementation method, the first carrier is located in the uplink band of the first frequency band, the second carrier is located in the downlink band of the first frequency band, or the first carrier is located in the downlink band of the first frequency band, and the second carrier is located in the uplink band of the first frequency band. Among them, the uplink band and the downlink band are discontinuous.

[0154] In another implementation method, the first carrier is located in the uplink band of the FDD band, the first carrier is located in the downlink band of the FDD band, or the first carrier is located in the downlink band of the FDD band, and the first carrier is located in the uplink band of the FDD band. Among them, the uplink band and the downlink band are discontinuous.

[0155] Exemplarily, the first carrier and the second carrier are two frequency parts of the same carrier, or can also be two independent carriers.

[0156] Exemplarily, the above first configuration information may be carried in radio resource control (RRC) signaling, a system information block (SIB), a master information block (MIB), downlink control information (DCI), or a medium access control control element (MAC CE).

[0157] Exemplarily, the first configuration information is used to configure the starting frequency position (such as a relative position or an absolute position) and the bandwidth size of the first carrier, and to configure the starting frequency position (such as a relative position or an absolute position) and the bandwidth size of the second carrier.

[0158] As an implementation method, if the bandwidth sizes of the first carrier and the second carrier are the same, the first configuration information may include the starting frequency position of the first carrier, the starting frequency position of the second carrier, and the bandwidth size, and the bandwidth size is applicable to both the first carrier and the second carrier. This method only needs to carry one bandwidth size in the first configuration information and does not need to carry two bandwidth sizes, which can save signaling overhead.

[0159] As another implementation method, if the bandwidth sizes of the first carrier and the second carrier are different, the first configuration information includes the starting frequency position and the bandwidth size of the first carrier, and includes the starting frequency position and the bandwidth size of the second carrier. This method configures the bandwidth sizes of the first carrier and the second carrier separately, and can flexibly configure the bandwidth size according to service requirements, increasing the flexibility of the configuration.

[0160] In the embodiments of the present application, the subcarrier spacing (SCS) of the first carrier and the second carrier may be the same, thereby reducing the processing complexity of the network device and the terminal device. Or the subcarrier spacing of the first carrier and the second carrier may also be different, thereby supporting different types of service requirements.

[0161] Step 1002, the network device sends second configuration information to the terminal device. Correspondingly, the terminal device receives the second configuration information.

[0162] The second configuration information is used to configure X BWPs for the terminal device, where X is an integer greater than 1 or X is a positive integer. Here, X refers to the maximum number of available BWPs configured by the network device for the terminal device, that is, the terminal device can use one or more of the X BWPs to transmit data or signaling.

[0163] Among them, the network device can activate 1 BWP among the X BWPs, or simultaneously activate N BWPs among the X BWPs, where N is an integer greater than 1.

[0164] In one implementation method, the X BWPs have the same link direction as the two carriers.

[0165] In one implementation method, the frequency resources of at least two BWPs among the X BWPs do not overlap with each other.

[0166] Among them, the order of the above step 1001 and step 1002 is not limited. It can either execute step 1001 first and then step 1002, or execute step 1002 first and then step 1001, or execute step 1001 and step 1002 simultaneously.

[0167] The above solution configures X BWPs for the terminal device that have the same link direction as the first carrier and the second carrier. X is an integer greater than 1, and multiple BWPs are allowed to be activated simultaneously, thereby improving the utilization efficiency of frequency resources, increasing the data transmission rate of the terminal device, and improving the uplink and downlink transmission performance of the terminal device.

[0168] Regarding the relationship between the above X BWPs and the first carrier and the second carrier, and the configuration method of the X BWPs, the following gives two different implementation methods.

[0169] Implementation method 1: X is an integer greater than 1. The X BWPs have the same link direction as the first carrier and the second carrier. Among the X BWPs, M BWPs are located within the first carrier, and the other X - M BWPs among the X BWPs are located within the second carrier. 1 or N BWPs among the X BWPs are activated simultaneously, where M is a positive integer, X - M is a positive integer, and N is an integer greater than 1.

[0170] Based on this implementation method 1, the network device configures X BWPs for the terminal device, where X is greater than or equal to 2, and a part of the X BWPs are located within the first carrier, and another part of the X BWPs are located within the second carrier. One or more of the X BWPs can be activated simultaneously.

[0171] If the link directions of the first carrier and the second carrier are the uplink direction, the link directions of the X BWPs are also the uplink direction; if the link directions of the first carrier and the second carrier are the downlink direction, the link directions of the X BWPs are also the downlink direction.

[0172] Figure 11 This is an example diagram of BWP configuration provided by the embodiments of the present application. In this example, the network device configures 5 BWPs for the terminal device, where BWP#1, BWP#2, and BWP#3 are located on the first carrier, and BWP#4 and BWP#5 are located on the second carrier.

[0173] Exemplarily, if N of the X BWPs are simultaneously activated, where N is an integer greater than 1, then the N activated BWPs can all be located on the first carrier. For example, the N carriers include Figure 11 BWP#1 and BWP#2 in Figure 11 ; or the N BWPs are all located on the second carrier. For example, the N carriers include Figure 11 BWP#4 and BWP#5 in

[0174] For the BWP of the first implementation method, the following introduces two methods for identifying the BWP, referring to the BWP identification method 1 and the BWP identification method 2 below respectively.

[0175] For the BWP identification method 1, the identification of each of the above X BWPs includes two parts, referred to as the first part and the second part. The first part and the second part jointly and uniquely indicate a BWP, and the first parts of the identifications of the X BWPs are the same, and the second parts of the identifications of the X BWPs are different from each other.

[0176] Based on this BWP identification method, the identifications of the configured X BWPs all include the first part and the second part, and the first parts of the identifications of the X BWPs are all the same, so that the association between the X BWPs can be realized. In this way, there is no need to add new signaling to associate the X BWPs, so the signaling overhead can be reduced.

[0177] Among them, the first part of the BWP identification can also be called the parent identification of the X BWPs, and the second part of the BWP identification can also be called the sub-identification of the X BWPs.

[0178] Exemplarily, the network device can activate 1 or N of the X BWPs through signaling such as RRC signaling, MAC CE, DCI, etc. or predefined rules, where N is an integer greater than 1.

[0179] As an example, three different activation methods are introduced below, namely activation method a, activation method b, and activation method c.

[0180] In activation method a, the network device sends DCI to the terminal device. The DCI is used to activate one or N BWPs. The DCI includes a BWP indication field. The BWP indication field includes a first field and a second field. The first field is used to indicate the first part of the identifiers of X BWPs, and the second field is used to indicate the second part of the identifiers of one or N BWPs.

[0181] This solution can activate one or N BWPs through DCI, realizing dynamic activation of BWPs and increasing the flexibility of the solution.

[0182] Among them, the BWP indication field can reuse the BWP indication field specified in the existing protocol.

[0183] Exemplarily, the first field of the BWP indication field includes A bits. The A bits are used to indicate the first part common to the X BWPs. The second field of the BWP indication field includes B bits. The B bits are used to indicate the second part of the identifiers of one or N BWPs. For example, if it is indicated to activate 3 BWPs at the same time, the first A bits of the BWP indication field indicate the first part common to the identifiers of the 3 BWPs, and the last B bits of the BWP indication field indicate the respective second parts of the identifiers of the 3 BWPs.

[0184] Two different implementation methods for the second field of the BWP indication field to indicate the second part of the identifiers of one or N BWPs are introduced below.

[0185] Method 1): The second field includes X bits (i.e., B = X). The X bits correspond one by one to X BWPs. One or N bits of the X bits take a first value. The first value is used to indicate the activation of the corresponding BWP. The other X - 1 or X - N bits of the X bits take a second value. The second value is used to indicate the non - activation of the corresponding BWP. It can also be understood that each bit of the X bits is used to indicate the second part of the identifier of the BWP that needs to be activated.

[0186] This solution can activate BWPs by associating X bits with X BWPs, enabling the use of fewer bits to indicate the activated BWPs and reducing signaling overhead.

[0187] Taking X equal to 5 as an example, assuming that the 5 configured BWPs are BWP#1, BWP#2, BWP#3, BWP#4, and BWP#5 respectively, the second field includes 5 bits, and each bit takes a value of 0 or 1. For example, if the value is 0, it means that the corresponding BWP is not activated, and if the value is 1, it means that the corresponding BWP is activated. If these 5 bits correspond to BWP#1, BWP#2, BWP#3, BWP#4, and BWP#5 in sequence from the high order to the low order, and BWP#1 and BWP#2 need to be activated, then the values of these 5 bits are: 11000.

[0188] Among them, these X bits as a whole can also be called a bit map.

[0189] In manner 2), the second field includes the second part of the identifiers of 1 or N BWPs to be activated. That is, the second part of the identifiers of the BWPs to be activated is explicitly included in the second field.

[0190] Exemplarily, if the maximum number of allowable activated BWPs is C, where C is less than or equal to X and C is greater than or equal to the aforementioned N, and the second part of each BWP identifier occupies D bits, then the second field can include C*D bits, and every D bits can be used to indicate the second part of the identifier of the BWP to be activated.

[0191] For example, X = 10, C = 8, and the second part of each BWP identifier occupies 3 bits. Then the second field occupies 8*3 = 24 bits. If the current number of BWPs to be activated is 5, then 5*3 = 15 bits in this second field are used to represent the second parts of the identifiers of the 5 BWPs to be activated, and the other 9 bits can take preset values, indicating that they are not used to represent the second parts of any BWP identifiers.

[0192] In activation method b, the network device sends DCI to the terminal device. The DCI is used to activate 1 or N BWPs. The DCI includes a first BWP indication field and a second BWP indication field. The first BWP indication field is used to indicate the first part of the identifiers of X BWPs, and the second BWP indication field is used for the second part of the identifiers of 1 or N BWPs.

[0193] Among them, the first BWP indication field can reuse the BWP indication field specified in the existing protocol, and the second BWP indication field can be a newly added BWP indication field.

[0194] For example, if 3 BWPs are activated simultaneously, the first BWP indication field indicates the common first part of the identifiers of these 3 BWPs, and the second BWP indication field indicates the respective second parts of the identifiers of these 3 BWPs.

[0195] The following introduces two different implementation methods for the second part of the second BWP indication field indicating the identification of 1 or N BWPs.

[0196] Method 1): The second BWP indication field includes X bits, and these X bits correspond one-to-one with X BWPs. One or N bits out of the X bits take a first value, and the first value is used to indicate the activation of the corresponding BWP. The other X - 1 or X - N bits out of the X bits take a second value, and the second value is used to indicate the non - activation of the corresponding BWP. It can also be understood that each of the X bits is used to indicate the second part of the identification of the BWP that needs to be activated.

[0197] Taking X equal to 5 as an example, assuming the 5 configured BWPs are BWP#1, BWP#2, BWP#3, BWP#4, and BWP#5 respectively, then the second field includes 5 bits, and each bit takes a value of 0 or 1. For example, if the value is 0, it means the corresponding BWP is not activated, and if the value is 1, it means the corresponding BWP is activated. If these 5 bits correspond to BWP#1, BWP#2, BWP#3, BWP#4, and BWP#5 in order from the high - order bit to the low - order bit, and BWP#1 and BWP#2 need to be activated, then the value of these 5 bits is: 11000.

[0198] Among them, these X bits as a whole can also be called a bit - map.

[0199] Method 2): The second BWP indication field includes the second part of the identification of 1 or N BWPs that need to be activated. That is, the second part of the identification of the BWP that needs to be activated is explicitly included in the second BWP indication field.

[0200] Exemplarily, if the maximum number of allowable activated BWPs is C, where C is less than or equal to X and C is greater than or equal to the aforementioned N, and the second part of the identification of each BWP occupies D bits, then the second BWP indication field can include C * D bits, and every D bits can be used to indicate the second part of the identification of the BWP that needs to be activated.

[0201] For example, X = 10, C = 8, and the second part of the identification of each BWP occupies 3 bits. Then the second BWP indication field occupies 8 * 3 = 24 bits. If the current number of BWPs that need to be activated is 5, then 5 * 3 = 15 bits in this second BWP indication field are used to represent the second part of the identification of the 5 BWPs that need to be activated, and the other 9 bits can take a preset value, indicating that they are not used to represent the second part of the identification of any BWP.

[0202] Activation method c: The network device sends a first signaling and DCI to the terminal device. The first signaling indicates the first part of the identifier of 1 or N BWPs among X BWPs, and the DCI is used to indicate the second part of the identifier of the 1 or N BWPs. The first signaling is an RRC signaling, SIB, MIB, or MAC CE.

[0203] That is, this method indicates the common first part of the identifiers of the 1 or N activated BWPs through the first signaling, and the respective second parts of the identifiers of the 1 or N activated BWPs are indicated by the DCI.

[0204] As an implementation method, the respective second parts of the identifiers of the 1 or N activated BWPs can be indicated by the BWP indication field in the DCI. The BWP indication field can reuse the BWP indication field in the existing protocol or be a newly added BWP indication field.

[0205] BWP identification method 2: Each of the above X BWPs has a dedicated identifier. That is, each BWP has an identifier, and the identifiers of different BWPs are different from each other.

[0206] Exemplarily, the network device can send DCI to the terminal device, and the DCI is used to activate 1 or N BWPs among the above X BWPs. The following introduces three different implementation methods, namely activation method 1, activation method 2, and activation method 3.

[0207] Activation method 1: The DCI includes 1 or N BWP indication fields, and each BWP indication field indicates the identifier of a BWP.

[0208] Exemplarily, if the maximum number of allowed activated BWPs is C, where C is less than or equal to X and C is greater than or equal to the aforementioned N, then the DCI can include C BWP indication fields. For example, if currently 1 BWP needs to be activated, the identifier of the activated BWP can be indicated by the corresponding BWP indication field in the DCI, and the other C - 1 BWP indication fields are not used to indicate the identifier of any BWP. Another example, if currently 3 BWPs need to be activated, the identifiers of the 3 activated BWPs can be respectively indicated by the corresponding 3 BWP indication fields in the DCI. Each of the 3 BWP indication fields is used to indicate the identifier of 1 activated BWP, and the other C - 3 BWP indication fields are not used to indicate the identifier of any BWP.

[0209] Activation method 2: The DCI includes a BWP indication field. The BWP indication field includes X bits, and the X bits correspond to X BWPs one by one. N bits out of the X bits take a first value, and the first value is used to indicate the activation of the corresponding BWP. The other X - N bits out of the X bits take a second value, and the second value is used to indicate the non - activation of the corresponding BWP.

[0210] Taking X equal to 5 as an example, assuming the 5 configured BWPs are BWP#1, BWP#2, BWP#3, BWP#4, and BWP#5 respectively, then the BWP indication field includes 5 bits, and each bit takes a value of 0 or 1. For example, if the value is 0, it indicates that the corresponding BWP is not activated, and if the value is 1, it indicates that the corresponding BWP is activated. If these 5 bits correspond to BWP#1, BWP#2, BWP#3, BWP#4, and BWP#5 from the high - order bit to the low - order bit in sequence, and it is required to activate BWP#1 and BWP#2, then the value of these 5 bits is: 11000.

[0211] Among them, the X bits as a whole can also be referred to as a bit - map.

[0212] The BWP indication field can be a reuse of the BWP indication field in the existing protocol.

[0213] Activation method 3: The DCI includes a BWP indication field, and the BWP indication field includes the identifiers of 1 or N BWPs to be activated. That is, the identifiers of the BWPs to be activated are explicitly included in the BWP indication field.

[0214] Exemplarily, if the maximum number of allowable activated BWPs is C, where C is less than or equal to X and C is greater than or equal to the aforementioned N, and the identifier of each BWP occupies D bits, then the BWP indication field can include C * D bits, and every D bits can be used to indicate the identifier of 1 BWP to be activated.

[0215] For example, X = 10, C = 8, and the identifier of each BWP occupies 3 bits. Then the BWP indication field occupies 8 * 3 = 24 bits. If the current number of BWPs to be activated is 5, then 5 * 3 = 15 bits in the BWP indication field are used to represent the identifiers of the 5 BWPs to be activated, and the other 9 bits can take a preset value, indicating that they are not used to represent the identifiers of any BWP.

[0216] The above introduces two different identification methods for BWPs, and for each identification method, multiple different specific implementation methods are given.

[0217] As an implementation method, the X BWPs in the above implementation method one can also satisfy the following feature 1 and / or feature 2.

[0218] Feature 1: Some or all of the following parameters of the above X BWPs are the same: the frequency resource parameters of the BWP, the parameters of the channel, or the parameters of the signal. That is, the X BWPs can share parameters, or it can be understood that some or all of the parameters configured for the X BWPs are the same.

[0219] Exemplarily, the channel here can include one or more of the following: PDSCH, PDCCH, PUSCH, PRACH, or PUCCH.

[0220] Exemplarily, the signal here can include one or more of the following: the DMRS of PDSCH, the DMRS of PDCCH, the DMRS of PUSCH, the DMRS of PUCCH, the PTRS of PDSCH, the PTRS of PUSCH, CSI-RS, TRS, SRS, or SSB.

[0221] Since some or all of the parameters configured for the X BWPs are the same, the following beneficial effects are achieved: First, the signaling overhead can be reduced when configuring parameters; second, the memory specification and implementation complexity of the terminal device can be reduced; third, when switching between the X BWPs, since there are common parameters, the switching delay can be reduced.

[0222] Feature 2: The switching delay between the X BWPs is less than the first threshold.

[0223] Referring to Table 1 above, when μ takes the value of 0, the subcarrier spacing is 15 kHz, and the first threshold is equal to the duration of 1 time slot (for type 1) or the duration of 3 time slots (for type 2). When μ takes the value of 1, the subcarrier spacing is 30 kHz, and the first threshold is equal to the duration of 2 time slots (for type 1) or the duration of 5 time slots (for type 2). When μ takes the value of 2, the subcarrier spacing is 60 kHz, and the first threshold is equal to the duration of 3 time slots (for type 1) or the duration of 9 time slots (for type 2). When μ takes the value of 3, the subcarrier spacing is 120 kHz, and the first threshold is equal to the duration of 6 time slots (for type 1) or the duration of 18 time slots (for type 2).

[0224] Therefore, in the embodiments of the present application, when the X BWPs meet Feature 2, when switching between the X BWPs, the switching delay will be less than the switching delay between BWPs in the existing protocol, that is, the switching delay can be reduced.

[0225] In order to meet the above Feature 2, a possible implementation method is: enhance the capabilities of the terminal device so that the terminal device can reduce the switching delay between BWPs.

[0226] When the X BWPs configured for the terminal device satisfy the above-mentioned feature 1 and / or feature 2, the handover latency between the X BWPs can be reduced. For example, the reduced handover latency can be at the symbol level, such as 1 symbol or 2 symbols, or even the handover latency can be reduced to zero, while the BWP handover latency in the existing protocol shown in Table 1 is at the slot level.

[0227] Combined with the above two identification methods of BWPs, for the aforementioned identification method 1 of BWPs, that is, the identification of each BWP includes a first part and a second part. If two BWPs contain the same first part, the handover latency between the two BWPs can be reduced according to the aforementioned latency reduction method. If two BWPs contain different first parts, the maximum value of the handover latency between the two BWPs can be defined according to the existing protocol shown in Table 1. For example, the network device configures BWPs #1 to #10 for the terminal device in the manner of the aforementioned Figure 10 embodiment. The link directions of these 10 BWPs are the uplink direction, and BWPs #1 to #10 form a group of BWPs. The identifications of BWPs #1 to #10 contain the same first part and different second parts; and the network device configures BWPs #11 to #20 for the terminal device in the manner of the aforementioned Figure 10 embodiment. The link directions of these 10 BWPs can all be the uplink direction or all be the downlink direction. BWPs #11 to #20 form a group of BWPs. The identifications of BWPs #11 to #20 contain the same first part and different second parts. Among them, the first part contained in the identification of BWPs #1 to #10 is different from the first part contained in the identification of BWPs #11 to #20. The handover latency between any two BWPs among BWPs #1 to #10 can be reduced according to the aforementioned latency reduction method, and the handover latency between any two BWPs among BWPs #11 to #20 can also be reduced according to the aforementioned latency reduction method. However, if any BWP among BWPs #1 to #10 is switched to any BWP among BWPs #11 to #20, or any BWP among BWPs #11 to #20 is switched to any BWP among BWPs #1 to #10, the maximum value of the BWP handover latency can be defined according to the existing protocol shown in Table 1. That is, the handover latency between different BWPs within the same group of BWPs is lower than the handover latency between different BWPs of different groups of BWPs.

[0228] For the foregoing BWP identification method 2, that is, the identification of each BWP is an exclusive identification, the network device can associate multiple BWPs configured for the terminal device through signaling, and the handover delay between the associated multiple BWPs can be reduced according to the foregoing delay reduction method. For example, the network device configures BWPs #1 to #10 for the terminal device in the manner of the foregoing Figure 10 embodiment, the link directions of these 10 BWPs are the uplink direction, and BWPs #1 to #10 form a group of BWPs, and the identifications of BWPs #1 to #10 are different from each other; and in the manner of the foregoing Figure 10 embodiment, the network device configures BWPs #11 to #20 for the terminal device. The link directions of these 10 BWPs can all be the uplink direction or all be the downlink direction. BWPs #11 to #20 form a group of BWPs, and the identifications of BWPs #11 to #20 are different from each other, and the identification of any BWP in BWPs #1 to #10 is different from the identification of any BWP in BWPs #11 to #20. The network device indicates to the terminal device that BWPs #1 to #10 are associated with each other, and indicates that BWPs #11 to #20 are associated with each other. Then, the handover delay between any two BWPs in BWPs #1 to #10 can be reduced according to the foregoing delay reduction method, and the handover delay between any two BWPs in BWPs #11 to #20 can also be reduced according to the foregoing delay reduction method. However, if any BWP in BWPs #1 to #10 is switched to any BWP in BWPs #11 to #20, or any BWP in BWPs #11 to #20 is switched to any BWP in BWPs #1 to #10, the maximum value of the handover delay of the BWP can be defined according to the existing protocol shown in Table 1. That is, the handover delay between different BWPs within the same group of BWPs is lower than the handover delay between different BWPs in different groups of BWPs.

[0229] Implementation method 2. In another embodiment, the relationship between X BWPs and the first carrier and the second carrier satisfies: X is a positive integer, the link directions of the X BWPs are the same as those of the first carrier and the second carrier, and the X BWPs include a first BWP. The frequency resources of the first BWP are continuous, the frequency resources of the first BWP overlap with both the first carrier and the second carrier, and 1 or N BWPs in the X BWPs are simultaneously activated, where N is an integer greater than 1.

[0230] Based on the second implementation method, the network device configures X BWPs for the terminal device, where X is greater than or equal to 1, and one or more of the X BWPs can be activated simultaneously. At least the first BWP is included in the X BWPs. The first BWP can span the frequency resources of the first carrier and the second carrier, that is, the frequency resources of the first BWP overlap with the frequency resources of both the first carrier and the second carrier.

[0231] The main difference between the second implementation method and the aforementioned first implementation method is that the BWPs configured in the second implementation method may span the first carrier and the second carrier, that is, one BWP overlaps with both carriers simultaneously, while the BWPs in the aforementioned first implementation method are within the first carrier or the second carrier, so they do not overlap with both carriers simultaneously. The second implementation method has fewer restrictions on the configuration method of BWPs, improving the flexibility of BWP configuration.

[0232] If X is an integer greater than 1, then any BWP other than the first BWP among the X BWPs can, similar to the first BWP, span the first carrier and the second carrier, or can be within the first carrier or the second carrier. That is, this method requires that there is at least one BWP (such as the first BWP) that can span the first carrier and the second carrier, and there are no restrictions on the configuration of other BWPs, which can be within the first carrier or the second carrier, or can span the first carrier and the second carrier simultaneously.

[0233] If the link directions of the first carrier and the second carrier are the uplink direction, then the link directions of the X BWPs are also the uplink direction; if the link directions of the first carrier and the second carrier are the downlink direction, then the link directions of the X BWPs are also the downlink direction.

[0234] Figure 12 This is an example diagram of BWP configuration provided for the embodiments of this application. In this example, the network device configures 3 BWPs for the terminal device, where BWP#1 is located in the first carrier, BWP#3 is located in the second carrier, and the frequency resources of BWP#2 overlap with the frequency resources of both the first carrier and the second carrier.

[0235] For the above-mentioned first BWP (such as Figure 12 BWP#2), only the valid resources within the first BWP can be used for data transmission. The valid resources within the first BWP refer to the overlapping part of the frequency resources of the first BWP with the frequency resources of the first carrier and / or the second carrier. The valid resources within the first BWP include the first valid resources located in the first carrier and / or the second valid resources located in the second carrier.

[0236] Based on the second implementation method, in one implementation method, the above-mentioned second configuration information includes RB start and L RB . Among them, RBstart Indicates the in-carrier offset of the first BWP, that is, the offset of the frequency-domain starting position of the first BWP compared to the frequency-domain starting position of a reference carrier (or called associated carrier), where the reference carrier is the first carrier or the second carrier. L RB Indicates the bandwidth size of the first BWP. For example, it can specifically be the number of PRBs occupied by the first BWP. In this solution, the in-carrier offset of the first BWP and the bandwidth size of the first BWP are explicitly carried in the second configuration information, which can improve the accuracy of the configuration.

[0237] Figure 13 Is an example of the first BWP. For instance, use To represent the frequency-domain starting position of the first BWP, and use O carrier To represent the frequency-domain starting position of the reference carrier of the first BWP, then Wherein, O carrier Can be configured by the network device through signaling. In this Figure 13 Example, the reference carrier of the first BWP is the first carrier.

[0238] As an implementation method, it can be defaulted through protocol definition or pre-configuration that the reference carrier of the first BWP is the carrier with the lower frequency position among the first carrier and the second carrier, that is, the frequency-domain starting position of the first BWP is within the carrier with the lower frequency position among the first carrier and the second carrier.

[0239] As another implementation method, the second configuration information in step 1002 above includes indication information, which is used to indicate the carrier where the frequency-domain starting position of the first BWP is located, that is, the second configuration information explicitly indicates that the reference carrier of the first BWP is the first carrier or the second carrier.

[0240] The following introduces two different implementation methods for the network device to configure the in-carrier offset (i.e., RB start ) of the first BWP and the bandwidth size (i.e., L RB ) of the first BWP.

[0241] Configuration method 1: The second configuration information in step 1002 above includes the in-carrier offset of the first BWP and the bandwidth size of the first BWP.

[0242] Based on this configuration method 1, the in-carrier offset of the first BWP and the bandwidth size of the first BWP are explicitly carried in the second configuration information.

[0243] Configuration method 2, the second configuration information in step 1002 above includes a resource indicator value (RIV) and a first parameter value. The RIV and the first parameter are used to determine the in-carrier offset of the first BWP and the bandwidth size of the first BWP. The first parameter is not less than the size of the frequency resource range occupied by the first carrier and the second carrier.

[0244] In this solution, since the number of bits occupied by the RIV and the first parameter is small, the signaling overhead can be reduced.

[0245] Figure 14 This is an example of the first BWP. The size of the frequency resource range occupied by the first carrier and the second carrier refers to the continuous frequency domain resources from the starting position of the frequency domain of the first carrier to the ending position of the frequency domain of the second carrier, or refers to the continuous frequency domain resources from the starting position of the frequency domain of the second carrier to the ending position of the frequency domain of the first carrier.

[0246] Based on this second configuration method, the in-carrier offset of the first BWP and the bandwidth size of the first BWP are not explicitly carried in the second configuration information, but the RIV and the first parameter are carried. Then, the terminal device can derive the in-carrier offset of the first BWP and the bandwidth size of the first BWP according to the RIV and the first parameter.

[0247] Exemplarily, RB start 、L RB 、the first parameter (denoted by ) and the RIV satisfy the following relationship:

[0248] If Then

[0249] If Then

[0250] Among them, And is an integer greater than 275. The value of

[0251] In principle, is not less than the size of the frequency resource range occupied by the first carrier and the second carrier.

[0252] Method A, the PRBs in the first BWP are numbered continuously.

[0253] All the PRBs of the first BWP are numbered in ascending order of PRB numbers. For example, if the first BWP includes p + 1 PRBs, the indices of the PRBs within the first BWP range from 0 to p.

[0254] The indices of the PRBs included in the first active resource are consecutive, and the indices of the PRBs included in the second active resource are consecutive, but the indices of the PRBs of the first active resource and the indices of the PRBs of the second active resource are not consecutive.

[0255] Figure 15 This is an example of the first BWP. Among them, the indices of the PRBs within the first BWP range from 0 to p, the indices of the first active resource range from 0 to m, and the indices of the second active resource range from m + k to p. It can be seen that the index of the first PRB of the second active resource (i.e., m + k) and the index of the last PRB of the first active resource (i.e., m) are not consecutive. There are k - 1 PRBs within the first BWP that have no intersection with the frequency resources of the first carrier and no intersection with the frequency resources of the second carrier.

[0256] Method B: The PRBs within the active resources of the first BWP are numbered continuously.

[0257] The indices of the PRBs included in the first active resource are consecutive, the indices of the PRBs included in the second active resource are consecutive, and the indices of the PRBs of the first active resource and the indices of the PRBs of the second active resource are also consecutive.

[0258] Figure 16 This is an example of the first active resource and the second active resource. Among them, the indices of the first active resource range from 0 to m, and the indices of the second active resource range from m + 1 to q. It can be seen that the index of the first PRB of the second active resource (i.e., m + 1) and the index of the last PRB of the first active resource (i.e., m) are consecutive.

[0259] For this second implementation method, in one implementation method, the size of the resource block group (RBG) is determined according to the number of PRBs included in the active resources within the first BWP, rather than according to the number of RPBs included in the first BWP, that is, the number of RPBs occupied by the invalid resources needs to be excluded. Here, the invalid resources refer to the resources in the frequency domain resources of the first BWP that do not overlap with the frequency domain resources of the first carrier and do not overlap with the frequency domain resources of the second carrier. Among them, the size of the RBG refers to the number of PRBs included in the RBG. Correspondingly, the number of bits included in the frequency domain resource allocation (FDRA) indication field in the DCI is determined according to the number of PRBs included in the active resources of the first BWP and the size of the RBG.

[0260] For the second implementation method, in one implementation, the PDSCH transmission or the PUSCH transmission uses a first precoding codebook within a first valid resource and uses a second precoding codebook within a second valid resource. Herein, the first precoding codebook and the second precoding codebook may be the same or different, and the present application does not make any limitation thereto.

[0261] For the second implementation method, in one implementation, a first resource is used for downlink measurement and / or a second resource is used for measurement reporting within a first valid resource, and a third resource is used for downlink measurement and / or a fourth resource is used for measurement reporting within a second valid resource. Herein, the first resource is different from the third resource, and the second resource and the fourth resource may be the same or different. That is, downlink measurement and reporting are independently performed within different valid resources of the first BWP. Herein, the downlink measurement includes, for example, channel state information (CSI) measurement, downlink path loss measurement, and the like. This solution independently performs downlink measurement and reporting within different valid resources, which can increase the flexibility and accuracy of measurement and reporting.

[0262] For the second implementation method, in one implementation, a fifth resource is used for uplink measurement within a first valid resource, and a sixth resource is used for uplink measurement within a second valid resource. Herein, the fifth resource is different from the sixth resource. That is, uplink measurement is independently performed within different valid resources of the first BWP. Exemplarily, when a PUSCH transmission spans the first valid resource and the second valid resource, the first valid resource and the second valid resource may maintain the same number of transmission layers, but the antenna port and the precoder are different. This solution independently performs uplink measurement within different valid resources, which can increase the flexibility and accuracy of measurement.

[0263] Regarding the above-mentioned second implementation method, taking the first BWP as an example, the related implementation methods of the first BWP are introduced. For other BWPs, if the frequency-domain resources of the BWP overlap with the frequency-domain resources of the first carrier and the second carrier, the implementation method of the BWP may refer to the implementation method of the first BWP and will not be elaborated herein.

[0264] As one implementation, the identification method of the BWP, the activation method of the BWP, and the method for reducing the handover delay between multiple BWPs in the second implementation method above may all refer to the identification method of the BWP, the activation method of the BWP, and the method for reducing the handover delay between multiple BWPs in the first implementation method above, or may be implemented by other means, and the present application does not make any limitation thereto.

[0265] It can be understood that, in order to implement the functions in the above embodiments, the terminal device or the network device includes the corresponding hardware structure and / or software module for executing each function. Those skilled in the art should easily realize that, in combination with the units and method steps of each example described in the embodiments disclosed in the present application, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed in the form of hardware or computer software driving the hardware depends on the specific application scenario and design constraints of the technical solution.

[0266] Figure 17 and Figure 18 FIG. 6 is a schematic structural diagram of a possible communication device provided by an embodiment of the present application. These communication devices can be used to implement the functions of the terminal device or the network device in the above method embodiments, and thus can also achieve the beneficial effects possessed by the above method embodiments. In the embodiments of the present application, the communication device can be a terminal device or a network device, or can also be a module (such as a chip) applied to the terminal device or the network device.

[0267] Figure 17 The shown communication device 1700 includes a processing unit 1710 and a transceiver unit 1720. The communication device 1700 is used to implement the functions of the terminal device or the network device in the above method embodiments.

[0268] When the communication device 1700 is used to implement the functions of the network device in the above method embodiments, the processing unit 1710 is used to control the transceiver unit 1720 to send first configuration information to the terminal device, where the first configuration information is used to configure a first carrier and a second carrier for the terminal device; and send second configuration information to the terminal device, where the second configuration information is used to configure X BWPs for the terminal device, and X is an integer greater than 1; wherein, the link directions of the first carrier, the second carrier, and the X BWPs are the same, the first carrier is located in a first sub-band of a first frequency band, the second carrier is located in a second sub-band of the first frequency band, and the first sub-band and the second sub-band are discontinuous; M of the X BWPs are located within the first carrier, and the other X - M of the X BWPs are located within the second carrier; N of the X BWPs are simultaneously activated, M is a positive integer, X - M is a positive integer, and N is an integer greater than 1.

[0269] In a possible implementation method, some of the N BWPs are located within the first carrier, and the other part is located within the second carrier.

[0270] In a possible implementation method, the identifier of each of the X BWPs includes a first part and a second part, the first parts of the identifiers of the X BWPs are the same, and the second parts of the identifiers of the X BWPs are different from each other.

[0271] In a possible implementation, the processing unit 1710 is further configured to control the transceiver unit 1720 to send DCI to the terminal device, where the DCI is used to activate the N BWPs.

[0272] In a possible implementation, the BWP indication field of the DCI includes a first field and a second field. The first field is used to indicate a first part of the identifiers of the N BWPs, and the second field is used to indicate a second part of the identifiers of the N BWPs.

[0273] In a possible implementation, the second field includes X bits, and the X bits correspond to the X BWPs one by one. N of the X bits take a first value, where the first value indicates activating the corresponding BWP, and the other X - N bits of the X bits take a second value, where the second value indicates not activating the corresponding BWP.

[0274] In a possible implementation, the second field includes the second part of the identifiers of the N BWPs.

[0275] In a possible implementation, the DCI includes a first BWP indication field and a second BWP indication field. The first BWP indication field is used to indicate a first part of the identifiers of the N BWPs, and the second BWP indication field is used to indicate a second part of the identifiers of the N BWPs.

[0276] In a possible implementation, the second BWP indication field includes X bits, and the X bits correspond to the X BWPs one by one. N of the X bits take a first value, where the first value indicates activating the corresponding BWP, and the other X - N bits of the X bits take a second value, where the second value indicates not activating the corresponding BWP.

[0277] In a possible implementation, the second BWP indication field includes the second part of the identifiers of the N BWPs.

[0278] In a possible implementation, the processing unit 1710 is further configured to control the transceiver unit 1720 to send a first signaling and DCI to the terminal device. The first signaling is used to indicate a first part of the identifiers of N BWPs among the X BPWs, and the DCI is used to indicate a second part of the identifiers of the N BWPs. The first signaling is an RRC signaling, SIB, MIB, or MACCE.

[0279] In a possible implementation, each of the X BWPs has a dedicated identifier.

[0280] In a possible implementation method, the processing unit 1710 is further configured to control the transceiver unit 1720 to send DCI to the terminal device, where the DCI is used to activate the N BWPs.

[0281] In a possible implementation method, the DCI includes N BWP indication fields, and each BWP indication field in the N BWP indication fields is used to indicate the identifier of one BWP among the N BWPs.

[0282] In a possible implementation method, the DCI includes a BWP indication field, the BWP indication field includes X bits, the X bits correspond to the X BWPs one by one, N bits of the X bits take a first value, and the first value indicates activating the corresponding BWP, and the other X - N bits of the X bits take a second value, and the second value indicates not activating the corresponding BWP.

[0283] In a possible implementation method, the DCI includes a BWP indication field, and the BWP indication field includes the identifiers of the N BWPs.

[0284] In a possible implementation method, some or all of the following parameters of the X BWPs are the same: the frequency resource parameters of the BWP, the parameters of the channel, or the parameters of the signal.

[0285] In a possible implementation method, the channel includes one or more of the following: PDSCH, PDCCH, PUSCH, PRACH, or PUCCH; the signal includes one or more of the following: the DMRS of PDSCH, the DMRS of PDCCH, the DMRS of PUSCH, the DMRS of PUCCH, the PTRS of PDSCH, the PTRS of PUSCH, CSI-RS, TRS, SRS, or SSB.

[0286] In a possible implementation method, the handover delay between the X BWPs is less than a first threshold; where when the subcarrier spacing is 15 kHz, the first threshold is equal to the duration of 1 time slot or the duration of 3 time slots; when the subcarrier spacing is 30 kHz, the first threshold is equal to the duration of 2 time slots or the duration of 5 time slots; when the subcarrier spacing is 60 kHz, the first threshold is equal to the duration of 3 time slots or the duration of 9 time slots; when the subcarrier spacing is 120 kHz, the first threshold is equal to the duration of 6 time slots or the duration of 18 time slots.

[0287] When the communication device 1700 is used to implement the functions of the terminal device in the above method embodiments, the processing unit 1710 is configured to control the transceiver unit 1720 to receive first configuration information from a network device, where the first configuration information is used to configure a first carrier and a second carrier for the terminal device; receive second configuration information from the network device, where the second configuration information is used to configure X BWPs for the terminal device, and X is an integer greater than 1; wherein, the link directions of the first carrier, the second carrier, and the X BWPs are the same, the first carrier is located in a first sub-band of a first frequency band, the second carrier is located in a second sub-band of the first frequency band, and the first sub-band and the second sub-band are discontinuous; M of the X BWPs are located within the first carrier, and the other X - M of the X BWPs are located within the second carrier; N of the X BWPs are simultaneously activated, M is a positive integer, X - M is a positive integer, and N is an integer greater than 1.

[0288] In a possible implementation method, some of the N BWPs are located within the first carrier, and the other part is located within the second carrier.

[0289] In a possible implementation method, the identifier of each of the X BWPs includes a first part and a second part, the first parts of the identifiers of the X BWPs are the same, and the second parts of the identifiers of the X BWPs are different from each other.

[0290] In a possible implementation method, the processing unit 1710 is further configured to control the transceiver unit 1720 to receive DCI from the network device, where the DCI is used to activate the N BWPs.

[0291] In a possible implementation method, the BWP indication field of the DCI includes a first field and a second field, the first field is used to indicate the first part of the identifiers of the N BWPs, and the second field is used to indicate the second part of the identifiers of the N BWPs.

[0292] In a possible implementation method, the second field includes X bits, the X bits correspond to the X BWPs one by one, N of the X bits take a first value, and the first value indicates activating the corresponding BWP, and the other X - N of the X bits take a second value, and the second value indicates not activating the corresponding BWP.

[0293] In a possible implementation method, the second field includes the second part of the identifiers of the N BWPs.

[0294] In a possible implementation method, the DCI includes a first BWP indication field and a second BWP indication field. The first BWP indication field is used to indicate the first part of the identifiers of the N BWPs, and the second BWP indication field is used to indicate the second part of the identifiers of the N BWPs.

[0295] In a possible implementation method, the second BWP indication field includes X bits. The X bits correspond to the X BWPs one by one. N of the X bits take a first value, and the first value indicates activating the corresponding BWP. The other X - N bits of the X bits take a second value, and the second value indicates not activating the corresponding BWP.

[0296] In a possible implementation method, the second BWP indication field includes the second part of the identifiers of the N BWPs.

[0297] In a possible implementation method, the processing unit 1710 is further configured to control the transceiver unit 1720 to receive a first signaling and DCI from the network device. The first signaling is used to indicate the first part of the identifiers of N BWPs among the X BWPs, and the DCI is used to indicate the second part of the identifiers of the N BWPs. The first signaling is an RRC signaling, SIB, MIB, or MAC CE.

[0298] In a possible implementation method, each of the X BWPs has a dedicated identifier.

[0299] In a possible implementation method, the processing unit 1710 is further configured to control the transceiver unit 1720 to receive DCI from the network device, and the DCI is used to activate the N BWPs.

[0300] In a possible implementation method, the DCI includes N BWP indication fields, and each BWP indication field in the N BWP indication fields is used to indicate the identifier of one BWP among the N BWPs.

[0301] In a possible implementation method, the DCI includes a BWP indication field. The BWP indication field includes X bits. The X bits correspond to the X BWPs one by one. N of the X bits take a first value, and the first value indicates activating the corresponding BWP. The other X - N bits of the X bits take a second value, and the second value indicates not activating the corresponding BWP.

[0302] In a possible implementation method, the DCI includes a BWP indication field, and the BWP indication field includes the identifiers of the N BWPs.

[0303] In a possible implementation method, some or all of the following parameters of the X BWPs are the same: the frequency resource parameters of the BWP, the parameters of the channel, or the parameters of the signal.

[0304] In a possible implementation method, the channel includes one or more of the following: PDSCH, PDCCH, PUSCH, PRACH, or PUCCH; the signal includes one or more of the following: the DMRS of PDSCH, the DMRS of PDCCH, the DMRS of PUSCH, the DMRS of PUCCH, the PTRS of PDSCH, the PTRS of PUSCH, CSI-RS, TRS, SRS, or SSB.

[0305] In a possible implementation method, the handover delay between the X BWPs is less than a first threshold; wherein, when the subcarrier spacing is 15 kHz, the first threshold is equal to the duration of 1 time slot or the duration of 3 time slots; when the subcarrier spacing is 30 kHz, the first threshold is equal to the duration of 2 time slots or the duration of 5 time slots; when the subcarrier spacing is 60 kHz, the first threshold is equal to the duration of 3 time slots or the duration of 9 time slots; when the subcarrier spacing is 120 kHz, the first threshold is equal to the duration of 6 time slots or the duration of 18 time slots.

[0306] When the communication device 1700 is used to implement the functions of the network device in the above method embodiments, the processing unit 1710 is configured to control the transceiver unit 1720 to send first configuration information to the terminal device, where the first configuration information is used to configure a first carrier and a second carrier for the terminal device; and send second configuration information to the terminal device, where the second configuration information is used to configure X BWPs for the terminal device, and X is a positive integer; wherein, the link directions of the first carrier, the second carrier, and the X BWPs are the same, the first carrier is located in a first sub-band of a first frequency band, the second carrier is located in a second sub-band of the first frequency band, and the first sub-band and the second sub-band are discontinuous; the X BWPs include a first BWP, the frequency resources of the first BWP are continuous, and there is an overlap with both the first carrier and the second carrier; and N of the X BWPs are simultaneously activated, where N is an integer greater than 1.

[0307] In a possible implementation method, the starting frequency-domain position of the first BWP is located within the carrier with the lower frequency position among the first carrier and the second carrier.

[0308] In a possible implementation method, the second configuration information includes indication information, and the indication information is used to indicate the carrier where the starting frequency-domain position of the first BWP is located.

[0309] In a possible implementation method, the second configuration information includes the in-carrier offset of the first BWP and the bandwidth size of the first BWP.

[0310] In a possible implementation method, the second configuration information includes an RIV and a first parameter value. The RIV and the first parameter are used to determine the in-carrier offset of the first BWP and the bandwidth size of the first BWP, and the first parameter is not less than the size of the frequency resource range occupied by the first carrier and the second carrier.

[0311] In a possible implementation method, only the valid resources within the first BWP can be used for data transmission. The valid resources within the first BWP refer to the overlapping part of the frequency resources of the first BWP and the frequency resources of the first carrier and / or the second carrier. The valid resources within the first BWP include first valid resources located in the first carrier and / or second valid resources located in the second carrier.

[0312] In a possible implementation method, the PRBs within the first BWP are consecutively numbered; or, the PRBs within the valid resources of the first BWP are consecutively numbered.

[0313] In a possible implementation method, the size of the RBG is determined according to the number of PRBs included in the valid resources within the first BWP.

[0314] In a possible implementation method, for PDSCH transmission or PUSCH transmission, a first precoding codebook is used within the first valid resources, and a second precoding codebook is used within the second valid resources.

[0315] In a possible implementation method, a first resource is used for downlink measurement and / or a second resource is used for measurement reporting within the first valid resources, and a third resource is used for downlink measurement and / or a fourth resource is used for measurement reporting within the second valid resources; wherein, the first resource is different from the third resource.

[0316] In a possible implementation method, a fifth resource is used for uplink measurement within the first valid resources, and a sixth resource is used for uplink measurement within the second valid resources; wherein, the fifth resource is different from the sixth resource.

[0317] When the communication device 1700 is used to implement the functions of the terminal device in the above method embodiments, the processing unit 1710 is configured to control the transceiver unit 1720 to receive first configuration information from a network device, where the first configuration information is used to configure a first carrier and a second carrier for the terminal device; and receive second configuration information from the network device, where the second configuration information is used to configure X BWPs for the terminal device, and X is a positive integer; wherein, the link directions of the first carrier, the second carrier, and the X BWPs are the same, the first carrier is located in a first sub-band of a first frequency band, the second carrier is located in a second sub-band of the first frequency band, and the first sub-band and the second sub-band are discontinuous; the X BWPs include a first BWP, the frequency resources of the first BWP are continuous and overlap with both the first carrier and the second carrier; and N BWPs among the X BWPs are simultaneously activated, and N is an integer greater than 1.

[0318] In a possible implementation method, the frequency-domain starting position of the first BWP is located within the carrier with a lower frequency position among the first carrier and the second carrier.

[0319] In a possible implementation method, the second configuration information includes indication information, where the indication information is used to indicate the carrier where the frequency-domain starting position of the first BWP is located.

[0320] In a possible implementation method, the second configuration information includes the in-carrier offset of the first BWP and the bandwidth size of the first BWP.

[0321] In a possible implementation method, the second configuration information includes an RIV and a first parameter value, where the RIV and the first parameter are used to determine the in-carrier offset of the first BWP and the bandwidth size of the first BWP, and the first parameter is not less than the size of the frequency resource range occupied by the first carrier and the second carrier.

[0322] In a possible implementation method, only the valid resources within the first BWP can be used for data transmission, and the valid resources within the first BWP refer to the overlapping part of the frequency resources of the first BWP with the frequency resources of the first carrier and / or the second carrier. The valid resources within the first BWP include first valid resources located in the first carrier and / or second valid resources located in the second carrier.

[0323] In a possible implementation method, the PRBs within the first BWP are continuously numbered; or, the PRBs within the valid resources of the first BWP are continuously numbered.

[0324] In a possible implementation method, the size of the RBG is determined according to the number of PRBs included in the valid resources within the first BWP.

[0325] In a possible implementation method, the PDSCH transmission or the PUSCH transmission uses a first precoding codebook within the first available resource and uses a second precoding codebook within the second available resource.

[0326] In a possible implementation method, a first resource is used for downlink measurement and / or a second resource is used for measurement reporting within the first available resource, and a third resource is used for downlink measurement and / or a fourth resource is used for measurement reporting within the second available resource; wherein, the first resource is different from the third resource.

[0327] In a possible implementation method, a fifth resource is used for uplink measurement within the first available resource, and a sixth resource is used for uplink measurement within the second available resource; wherein, the fifth resource is different from the sixth resource.

[0328] For a more detailed description of the above processing unit 1710 and transceiver unit 1720, it can be directly obtained by referring to the relevant descriptions in the above method embodiments, and will not be elaborated here.

[0329] Figure 18 The illustrated communication device 1800 includes a processor 1810 and an interface circuit 1820. The processor 1810 and the interface circuit 1820 are coupled to each other. It can be understood that the interface circuit 1820 can be a transceiver or an input / output interface. Optionally, the communication device 1800 may further include a memory 1830 for storing instructions executed by the processor 1810 or for storing input data required for the processor 1810 to run instructions or for storing data generated after the processor 1810 runs instructions.

[0330] When the communication device 1800 is used to implement the above method embodiments, the processor 1810 is used to implement the functions of the above processing unit 1710, and the interface circuit 1820 is used to implement the functions of the above transceiver unit 1720.

[0331] It can be understood that the processor in the embodiments of the present application may be a central processing unit (CPU), or may also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. The general-purpose processor may be a microprocessor or any conventional processor.

[0332] The method steps in the embodiments of the present application can be implemented in a hardware manner or by a processor executing software instructions. The software instructions can be composed of corresponding software modules, and the software modules can be stored in a random access memory, a flash memory, a read-only memory, a programmable read-only memory, an erasable programmable read-only memory, an electrically erasable programmable read-only memory, a register, a hard disk, a removable hard disk, a compact disc read-only memory (CD-ROM), or any other form of storage medium well-known in the art. An exemplary storage medium is coupled to the processor, enabling the processor to read information from the storage medium and write information to the storage medium. Of course, the storage medium can also be a component of the processor. The processor and the storage medium can be located in an ASIC. Additionally, the ASIC can be located in a terminal device or a network device. Of course, the processor and the storage medium can also exist as discrete components in an access network device or a terminal.

[0333] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer programs or instructions. A computer program refers to a set of instructions that direct the actions of an electronic computer or other device with message processing capabilities at each step, usually written in a certain programming language and running on a certain target architecture. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are executed in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer program or instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer program or instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center in a wired or wireless manner. The computer-readable storage medium can be any available medium that the computer can access or a data storage device such as a server or a data center integrating one or more available media. The available medium can be a magnetic medium, such as a floppy disk, a hard disk, or a magnetic tape; it can also be an optical medium, such as a digital video disc; or it can be a semiconductor medium, such as a solid-state drive. The computer-readable storage medium can be a volatile or non-volatile storage medium, or can include both volatile and non-volatile types of storage media.

[0334] In various embodiments of the present application, if there is no special description and logical conflict, the terms and / or descriptions between different embodiments are consistent and can be cross-referenced to each other. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationships.

[0335] In the present application, "at least one" means one or more, and "a plurality" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone, where A and B can be singular or plural. In the written description of the present application, the character " / " generally means that the associated objects before and after are in an "or" relationship; in the formulas of the present application, the character " / " means that the associated objects before and after are in a "division" relationship.

[0336] It can be understood that the various numerical numbers involved in the embodiments of the present application are only for the convenience of description and are not used to limit the scope of the embodiments of the present application. The magnitudes of the sequence numbers of the above processes do not mean the sequence of execution, and the execution sequence of each process should be determined by its function and internal logic.

Claims

1. A communication method, characterized in that, the method comprises: sending first configuration information to a terminal device, where the first configuration information is used to configure a first carrier and a second carrier for the terminal device; sending second configuration information to the terminal device, where the second configuration information is used to configure X bandwidth parts (BWPs) for the terminal device, and X is an integer greater than 1; wherein, the link directions of the first carrier, the second carrier, and the X BWPs are the same, the first carrier is located in a first sub-band of a first frequency band, the second carrier is located in a second sub-band of the first frequency band, and the first sub-band and the second sub-band are discontinuous; M of the X BWPs are located within the first carrier, and the other X - M of the X BWPs are located within the second carrier; N of the X BWPs are simultaneously activated, M is a positive integer, X - M is a positive integer, and N is an integer greater than 1.

2. The method according to claim 1, characterized in that, the identifier of each of the X BWPs comprises a first part and a second part, the first parts of the identifiers of the X BWPs are the same, and the second parts of the identifiers of the X BWPs are different from each other.

3. The method according to claim 2, characterized in that, the method further comprises: sending downlink control information (DCI) to the terminal device, where the DCI is used to activate the N BWPs.

4. The method according to claim 3, characterized in that, the BWP indication field of the DCI comprises a first field and a second field, the first field is used to indicate the first part of the identifiers of the N BWPs, and the second field is used to indicate the second part of the identifiers of the N BWPs.

5. The method according to claim 4, characterized in that, the second field comprises X bits, the X bits correspond to the X BWPs one by one, N of the X bits take a first value, and the first value indicates activating the corresponding BWP, and the other X - N of the X bits take a second value, and the second value indicates not activating the corresponding BWP.

6. The method according to claim 4, characterized in that, the second field comprises the second part of the identifiers of the N BWPs.

7. The method according to claim 3, characterized in that, the DCI comprises a first BWP indication field and a second BWP indication field, the first BWP indication field is used to indicate the first part of the identifiers of the N BWPs, and the second BWP indication field is used to indicate the second part of the identifiers of the N BWPs.

8. The method according to claim 7, characterized in that, the second BWP indication field comprises X bits, the X bits correspond to the X BWPs one by one, N of the X bits take a first value, and the first value indicates activating the corresponding BWP, and the other X - N of the X bits take a second value, and the second value indicates not activating the corresponding BWP.

9. The method according to claim 7, characterized in that, the second BWP indication field comprises the second part of the identifiers of the N BWPs.

10. The method according to claim 2, characterized in that, the method further comprises: sending a first signaling and DCI to the terminal device, the first signaling being used to indicate a first part of the identifiers of N BWPs among the X BWPs, the DCI being used to indicate a second part of the identifiers of the N BWPs, and the first signaling being a radio resource control (RRC) signaling, a system information block (SIB), a master information block (MIB), or a media access control control element (MAC CE).

11. The method according to claim 1, characterized in that, each of the X BWPs has a dedicated identifier.

12. The method according to claim 11, characterized in that, the method further comprises: sending DCI to the terminal device, the DCI being used to activate the N BWPs.

13. The method according to claim 12, characterized in that, the DCI includes N BWP indication fields, and each BWP indication field among the N BWP indication fields is used to indicate the identifier of one BWP among the N BWPs.

14. The method according to claim 12, characterized in that, the DCI includes a BWP indication field, the BWP indication field includes X bits, the X bits correspond one-to-one to the X BWPs, N bits among the X bits take a first value, the first value indicates activating the corresponding BWP, and the other X - N bits among the X bits take a second value, the second value indicates not activating the corresponding BWP.

15. The method according to claim 12, characterized in that, the DCI includes a BWP indication field, and the BWP indication field includes the identifiers of the N BWPs.

16. A communication method, characterized in that, the method comprises: receiving first configuration information from a network device, the first configuration information being used to configure a first carrier and a second carrier for the terminal device; receiving second configuration information from the network device, the second configuration information being used to configure X bandwidth parts (BWPs) for the terminal device, where X is an integer greater than 1; wherein, the link directions of the first carrier, the second carrier, and the X BWPs are the same, the first carrier is located in a first sub-band of a first frequency band, the second carrier is located in a second sub-band of the first frequency band, and the first sub-band and the second sub-band are discontinuous; M BWPs among the X BWPs are located within the first carrier, and the other X - M BWPs among the X BWPs are located within the second carrier; N BWPs among the X BWPs are simultaneously activated, M is a positive integer, X - M is a positive integer, and N is an integer greater than 1.

17. The method according to claim 16, characterized in that, the identifier of each of the X BWPs includes a first part and a second part, the first parts of the identifiers of the X BWPs are the same, and the second parts of the identifiers of the X BWPs are different from each other.

18. The method according to claim 17, characterized in that, the method further comprises: Receive downlink control information DCI from the network device, where the DCI is used to activate the N BWPs.

19. The method according to claim 18, wherein, the BWP indication field of the DCI includes a first field and a second field, the first field is used to indicate a first part of the identifiers of the N BWPs, and the second field is used to indicate a second part of the identifiers of the N BWPs.

20. The method according to claim 19, wherein, the second field includes X bits, the X bits correspond to the X BWPs one by one, N bits of the X bits take a first value, the first value indicates activating the corresponding BWP, and the other X - N bits of the X bits take a second value, the second value indicates not activating the corresponding BWP.

21. The method according to claim 19, wherein, the second field includes the second part of the identifiers of the N BWPs.

22. The method according to claim 18, wherein, the DCI includes a first BWP indication field and a second BWP indication field, the first BWP indication field is used to indicate a first part of the identifiers of the N BWPs, and the second BWP indication field is used to indicate a second part of the identifiers of the N BWPs.

23. The method according to claim 22, wherein, the second BWP indication field includes X bits, the X bits correspond to the X BWPs one by one, N bits of the X bits take a first value, the first value indicates activating the corresponding BWP, and the other X - N bits of the X bits take a second value, the second value indicates not activating the corresponding BWP.

24. The method according to claim 22, wherein, the second BWP indication field includes the second part of the identifiers of the N BWPs.

25. The method according to claim 17, wherein, the method further includes: receiving a first signaling and DCI from the network device, the first signaling is used to indicate a first part of the identifiers of N BWPs among the X BPWs, the DCI is used to indicate a second part of the identifiers of the N BWPs, and the first signaling is a radio resource control RRC signaling, a system information block SIB, a master information block MIB, or a media access control control element MAC CE.

26. The method according to claim 16, wherein, each of the X BWPs has a dedicated identifier.

27. The method according to claim 26, wherein, the method further includes: receiving DCI from the network device, the DCI is used to activate the N BWPs.

28. The method according to claim 27, wherein, the DCI includes N BWP indication fields, and each BWP indication field in the N BWP indication fields is used to indicate the identifier of one BWP among the N BWPs.

29. The method according to claim 27, wherein, The DCI includes a BWP indication field, the BWP indication field includes X bits, the X bits correspond to the X BWPs one by one, N bits of the X bits take a first value, the first value indicates activating the corresponding BWP, and the other X - N bits of the X bits take a second value, the second value indicates not activating the corresponding BWP.

30. The method according to claim 27, wherein, the DCI includes a BWP indication field, and the BWP indication field includes the identifiers of the N BWPs.

31. The method according to any one of claims 1 to 30, wherein, part or all of the following parameters of the X BWPs are the same: the frequency resource parameters of the BWP, the parameters of the channel, or the parameters of the signal.

32. The method according to any one of claims 1 to 31, wherein, the handover delay between the X BWPs is less than a first threshold; wherein, when the sub - carrier spacing is 15 kHz, the first threshold is equal to the duration of 1 time slot or the duration of 3 time slots; when the sub - carrier spacing is 30 kHz, the first threshold is equal to the duration of 2 time slots or the duration of 5 time slots; when the sub - carrier spacing is 60 kHz, the first threshold is equal to the duration of 3 time slots or the duration of 9 time slots; when the sub - carrier spacing is 120 kHz, the first threshold is equal to the duration of 6 time slots or the duration of 18 time slots.

33. A communication method, wherein, the method includes: sending first configuration information to a terminal device, the first configuration information being used to configure a first carrier and a second carrier for the terminal device; sending second configuration information to the terminal device, the second configuration information being used to configure X bandwidth parts (BWPs) for the terminal device, where X is a positive integer; wherein, the link directions of the first carrier, the second carrier, and the X BWPs are the same, the first carrier is located in a first sub - band of a first frequency band, the second carrier is located in a second sub - band of the first frequency band, the first sub - band and the second sub - band are discontinuous; the X BWPs include a first BWP, the frequency resources of the first BWP are continuous and overlap with both the first carrier and the second carrier; N of the X BWPs are simultaneously activated, and N is an integer greater than 1.

34. A communication method, wherein, the method includes: receiving first configuration information from a network device, the first configuration information being used to configure a first carrier and a second carrier for a terminal device; receiving second configuration information from the network device, the second configuration information being used to configure X bandwidth parts (BWPs) for the terminal device, where X is a positive integer; Among them, the link directions of the first carrier, the second carrier, and the X BWPs are the same. The first carrier is located in the first sub-band of the first frequency band, the second carrier is located in the second sub-band of the first frequency band, and the first sub-band and the second sub-band are discontinuous; the X BWPs include a first BWP, the frequency resources of the first BWP are continuous, and there is an overlap with both the first carrier and the second carrier; N of the X BWPs are simultaneously activated, and N is an integer greater than 1.

35. The method according to claim 33 or 34, characterized in that the starting frequency-domain position of the first BWP is located within the carrier with the lower frequency position among the first carrier and the second carrier.

36. The method according to claim 33 or 34, characterized in that the second configuration information includes indication information, and the indication information is used to indicate the carrier where the starting frequency-domain position of the first BWP is located.

37. The method according to any one of claims 33 to 36, characterized in that the second configuration information includes the in-carrier offset of the first BWP and the bandwidth size of the first BWP.

38. The method according to any one of claims 33 to 36, characterized in that the second configuration information includes a resource indication value RIV and a first parameter value. The RIV and the first parameter are used to determine the in-carrier offset of the first BWP and the bandwidth size of the first BWP, and the first parameter is not less than the size of the frequency resource range occupied by the first carrier and the second carrier.

39. The method according to any one of claims 33 to 38, characterized in that only the valid resources within the first BWP can be used for data transmission. The valid resources within the first BWP refer to the overlapping part of the frequency resources of the first BWP and the frequency resources of the first carrier and / or the second carrier. The valid resources within the first BWP include first valid resources located in the first carrier and / or second valid resources located in the second carrier.

40. The method according to claim 39, characterized in that the physical resource blocks PRBs within the first BWP are numbered continuously; or, the PRBs within the valid resources of the first BWP are numbered continuously.

41. The method according to claim 39 or 40, characterized in that the size of the resource block group RBG is determined according to the number of PRBs included in the valid resources within the first BWP.

42. The method according to any one of claims 39 to 41, characterized in that for PDSCH transmission or PUSCH transmission, a first precoding codebook is used within the first valid resources, and a second precoding codebook is used within the second valid resources.

43. The method according to any one of claims 39 to 42, characterized in that Use the first resource for downlink measurement and / or use the second resource for measurement reporting within the first valid resource, and use the third resource for downlink measurement and / or use the fourth resource for measurement reporting within the second valid resource; wherein, the first resource is different from the third resource.

44. The method according to any one of claims 39 to 43, wherein, Use the fifth resource for uplink measurement within the first valid resource, and use the sixth resource for uplink measurement within the second valid resource; wherein, the fifth resource is different from the sixth resource.

45. A communication device, wherein, It includes a module for executing the method according to any one of claims 1 to 15, 31 to 32, or the method according to any one of claims 16 to 32, or the method according to any one of claims 33, 35 to 44, or the method according to any one of claims 34 to 44.

46. A communication device, wherein, It includes a processor and an interface circuit, and the processor is used to communicate with other devices through the interface circuit and execute the method according to any one of claims 1 to 15, 31 to 32, or execute the method according to any one of claims 16 to 32, or execute the method according to any one of claims 33, 35 to 44, or execute the method according to any one of claims 34 to 44.

47. A computer program product, wherein, The computer program product includes instructions that, when running on a processor, cause the processor to execute the method according to any one of claims 1 to 15, 31 to 32, or execute the method according to any one of claims 16 to 32, or execute the method according to any one of claims 33, 35 to 44, or execute the method according to any one of claims 34 to 44.

48. A computer-readable storage medium, wherein, The storage medium stores a computer program or instructions that, when executed by a communication device, implement the method according to any one of claims 1 to 15, 31 to 32, or implement the method according to any one of claims 16 to 32, or implement the method according to any one of claims 33, 35 to 44, or implement the method according to any one of claims 34 to 44.

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