CN114071736A

CN114071736A - Method and device for transmitting control signaling

Info

Publication number: CN114071736A
Application number: CN202010784130.4A
Authority: CN
Inventors: 刘南南; 张向东; 常俊仁; 陈磊
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-08-06
Filing date: 2020-08-06
Publication date: 2022-02-18
Also published as: WO2022028499A1

Abstract

The application provides a method for transmitting control signaling. The first device receives control signaling from the second device, wherein the control signaling comprises first information, the first information is used for indicating a first transmission mode, and scrambling information of the control signaling corresponds to a second transmission mode. Therefore, the first transmission mode is indicated through the control signaling corresponding to the second transmission mode, and the communication efficiency is improved.

Description

Method and device for transmitting control signaling

Technical Field

The present application relates to the field of communications, and in particular, to a method and an apparatus for transmitting control signaling.

Background

Multimedia Broadcast Multicast Service (MBMS) or multicast broadcast service (multicast and broadcast services, or multicast/broadcast services, or multicast-broadcast services, MBS) can effectively utilize communication resources, and provide a point-to-multipoint service in which a data source sends data to multiple users in a communication network, thereby realizing resource sharing and improving the resource utilization rate, especially the air interface resource. Generally, in the MBMS or MBS scenario, the information may be broadcast to all users, or may be sent to a group of subscribers who charge to watch, which may help operators develop various commercial applications such as multimedia advertisement, free and charged tv channels, multimedia message mass-sending, and the like.

A bandwidth part (BWP) is supported in a New Radio (NR), and after multicast is introduced in the NR, the BWP and a transmission mode have a corresponding relationship. For example, different multicasts may be transmitted on the respective BWPs, or unicast and multicast may be transmitted on the respective BWPs. In the conventional scheme, only data or signaling corresponding to one transmission mode can be transmitted on the BWP corresponding to the transmission mode, and the communication efficiency is low.

Disclosure of Invention

The application provides a method and a device for transmitting control signaling, which can help to improve transmission efficiency.

In a first aspect, a method for transmitting control signaling is provided, and the method includes receiving control signaling from a second device, where the control signaling includes first information, the first information is used to indicate a first transmission mode, and scrambling information of the control signaling corresponds to a second transmission mode.

The first device receives control signaling from the second device, wherein the control signaling comprises first information, the first information is used for indicating a first transmission mode, and scrambling information of the control signaling corresponds to a second transmission mode. Therefore, the first transmission mode is indicated through the control signaling corresponding to the second transmission mode, and the communication efficiency is improved. The method and the device avoid that the terminal cannot receive the control signaling which is sent by the network equipment and indicates the first transmission mode and/or the target first bandwidth part corresponding to the first transmission mode, and also avoid that the terminal cannot know the transmission condition of the first transmission mode and/or the target first bandwidth part corresponding to the first transmission mode and misses data reception or increases data reception delay, thereby being beneficial to reducing transmission delay. The terminal is facilitated to determine a transmission situation on BWP corresponding to the first transmission mode. The terminal is facilitated to determine a first transmission mode and/or a target first bandwidth portion. Optionally, the terminal may perform any one or more of the following: BWP switching (e.g., switching to a target first bandwidth portion corresponding to the first transmission mode), activating the target first bandwidth portion corresponding to the first transmission mode, further receiving data corresponding to the first transmission mode (e.g., data scheduled by the first control signaling), determining to communicate with the network device over the target first bandwidth portion corresponding to the first transmission mode. And the network equipment is also prevented from independently sending control signaling indicating the target first bandwidth part corresponding to the first transmission mode to the terminal. Correspondingly, the terminal is also prevented from receiving the control signaling which is sent by the network device independently and indicates the target first bandwidth part corresponding to the first transmission mode. And the control signaling that the terminal searches the scrambling information corresponding to the first transmission mode for scrambling all the time is avoided, and the energy conservation of the terminal is facilitated. The terminal is prevented from always working on a plurality of BWPs to receive control signaling corresponding to different transmission modes, and the terminal is favorable for saving energy. The first device can flexibly select a proper transmission mode from the first transmission mode or the second transmission mode for communication. In addition, the first device can flexibly adopt the first transmission mode for communication and/or adopt the second transmission mode for communication, and the flexibility of communication is improved. In addition, the embodiment of the application avoids that the terminal cannot receive the control signaling which indicates the first transmission mode and/or the target first bandwidth part corresponding to the first transmission mode and is sent by the network device, and misses the data reception, and also avoids that the terminal cannot know the transmission condition of the first transmission mode and/or the target first bandwidth part corresponding to the first transmission mode and misses the data reception, thereby being beneficial to improving the reliability of data transmission.

In some possible implementations, the method further includes: determining, according to the control signaling, to communicate with the second device over a bandwidth corresponding to the first transmission mode and/or to communicate with the second device over a bandwidth corresponding to the second transmission mode.

The first device determines to communicate with the second device over the bandwidth portion corresponding to the first transmission mode and/or to communicate with the second device over the bandwidth portion corresponding to the second transmission mode according to the control signaling. That is, the first device may flexibly employ the first transmission mode for communication or employ the second transmission mode for communication, so that communication efficiency can be improved.

In some possible implementations, the first information includes second identification information and/or a preset field, the second identification information is used for scheduling transmission corresponding to the first transmission mode, and the preset field is associated with the first transmission mode.

The content indicated by the first information can be realized through the second identification information or the preset field, namely, an implementation mode for indicating the first transmission mode is provided, so that the flexibility for indicating the first transmission mode is improved.

In some possible implementations, the first information includes a bandwidth part BWP field, the BWP field indicating the first transmission mode.

The content indicated by the first information may also be implemented by the BWP field, i.e. another implementation for indicating the first transmission mode is provided, thereby increasing the flexibility of indicating the first transmission mode.

In some possible implementations, the control signaling further includes indication information, where the indication information is used to indicate a target first bandwidth portion corresponding to the first transmission mode.

The control signaling may further indicate a bandwidth portion corresponding to the first transmission mode when the first transmission mode is indicated, so that the first device can determine the bandwidth portion corresponding to the first transmission mode, and further may perform communication on the bandwidth portion corresponding to the first transmission mode, so as to save signaling overhead compared to indicating the bandwidth portion corresponding to the first transmission mode through independent signaling.

In some possible implementations, the indication information includes C bits, and the method further includes: determining the target first bandwidth part according to the values of part of the C bits; or determining the target first bandwidth part according to the values of the C bits.

The first device may indicate the bandwidth part according to values of a part of bits or all bits of the C bits. That is to say, different values of the bits may respectively indicate different bandwidth portions, so that the bandwidth portion is indicated by the value of the bits, that is, an implementation manner of indicating the bandwidth portion is provided.

In some possible implementations, the index of the target first bandwidth part is a difference of a value of the C bits and a number of second bandwidth parts, the second bandwidth parts being associated with a second transmission mode; or

The index of the target first bandwidth part is a difference + a between the value of the C bits and the number of second bandwidth parts, the second bandwidth parts being associated with a second transmission mode, a being an integer; or

The index of the target first bandwidth part is the value of the C bits; or

The index of the target first bandwidth part is the value + b of the C bits, and b is an integer;

the index of the target first bandwidth part is the difference between the value of the C bits and R, and R is the maximum value of the bits determined according to the number of the second bandwidth parts; or

The index of the target first bandwidth part is the difference + C between the values of the C bits and R, where R is the maximum value of the bits determined according to the number of the second bandwidth parts, and C is an integer.

The target first bandwidth portion may be represented by an index. The representation of the index may be associated with the starting value of the index. Therefore, the index of the bandwidth part is indicated through the value of the bit, and the first bandwidth part is indicated through the index, so that the resource occupation of the indicated bandwidth part is reduced.

In some possible implementations, the method further includes: determining a number of the C bits according to a number of the first bandwidth portion, the first bandwidth portion being associated with the first transmission mode; or, determining the number of C bits according to a number of first bandwidth portions and a number of second bandwidth portions, the first bandwidth portions being associated with the first transmission mode and the second bandwidth portions being associated with the second transmission mode.

The first device may determine the number of bits occupied by the indication information indicating the first bandwidth part according to the number of the first bandwidth part, or the number of the first bandwidth part and the second bandwidth part. That is to say, the size of the bit occupied by the indication information indicating the first bandwidth part can be flexibly controlled, so that resource waste is avoided, and the resource utilization rate is improved.

In some possible implementations, the determining the number of C bits according to the number of the first bandwidth part and the number of the second bandwidth part includes: determining the number of the C bits according to the sum of the number of the first bandwidth part and the number of the second bandwidth part; or determining the number of the C bits according to the sum of the number of the first bits and the number of the second bits, wherein the number of the first bits is determined according to the number of the first bandwidth part, and the number of the second bits is determined according to the number of the second bandwidth part.

The number of the C bits is determined by the sum of the number of the first bandwidth part and the number of the second bandwidth part, i.e. the first bandwidth part and the second bandwidth part are indicated by the same indication information. In this way, the number of bits occupied by the first indication information and the second indication information can be reduced compared to indicating the first bandwidth part and the second bandwidth part respectively.

In some possible implementations, the second transmission mode is unicast and the first transmission mode is multicast.

In some possible implementations, the second transmission mode is a first multicast, and the first transmission mode is a second multicast.

In some possible implementations, the second transmission mode is multicast and the first transmission mode is unicast.

In a second aspect, a method for transmitting control signaling is provided, the method comprising: sending a control signaling to a first device, where the control signaling includes first information, the first information is used to indicate a first transmission mode, and scrambling information of the control signaling corresponds to a second transmission mode.

The second device sends control signaling comprising first information to the first device, wherein the first information is used for indicating a first transmission mode, and scrambling information of the control signaling corresponds to a second transmission mode. Therefore, the first transmission mode is indicated through the control signaling corresponding to the second transmission mode, and the first equipment can flexibly adopt the first transmission mode for communication or adopt the second transmission mode for communication, so that the communication efficiency is improved.

The first information comprises second identification information and/or a preset field, and the network equipment sends control signaling comprising the first information, so that the first equipment determines to communicate with the second equipment on the bandwidth part corresponding to the first transmission mode and/or communicate with the second equipment on the bandwidth part corresponding to the second transmission mode according to the control signaling. That is, this facilitates the first device to flexibly communicate in the first transmission mode or in the second transmission mode, so that the communication efficiency can be improved.

In some possible implementations, the control signaling further includes indication information indicating a target first bandwidth portion for transmission in the first transmission mode.

The control signaling may further indicate a bandwidth portion corresponding to the first transmission mode in case that the first transmission mode is indicated, so that the first device can communicate on the bandwidth portion corresponding to the first transmission mode, which saves signaling overhead compared to indicating the bandwidth portion corresponding to the first transmission mode through independent signaling.

In some possible implementations, the control signaling includes C bits, and values of a part of the C bits are used to determine the target first bandwidth part, or values of the C bits are used to determine the first bandwidth part.

The index of the target first bandwidth part is the value of the C bits; or

In a third aspect, a method for transmitting control signaling is provided, the method including:

receiving control signaling over a first bandwidth portion, the control signaling for scheduling data for transmission over a second bandwidth portion, a first transmission mode corresponding to the first bandwidth portion being different from a second transmission mode corresponding to the second bandwidth portion.

The terminal may receive control signaling on the second bandwidth portion for scheduling data for transmission on the second bandwidth portion or for scheduling resources on the second bandwidth portion. The control signaling can also be used for scheduling data transmitted on the first bandwidth part or for scheduling resources on the first bandwidth part, which helps the terminal to switch from the second bandwidth part to the first bandwidth part for data transmission by receiving the control signaling that schedules data transmission on the first bandwidth part on the second bandwidth part, and avoids switching to other bandwidth parts to acquire control signaling corresponding to other bandwidth parts, thereby improving the efficiency of data transmission.

In some possible implementations, the method further includes: transmitting the second data over the second bandwidth portion.

The terminal can receive the control signaling for scheduling data transmission on the first bandwidth part on the second bandwidth part, so that the terminal is facilitated to switch from the second bandwidth part to the first bandwidth part for data transmission, the situation that the terminal is switched to other bandwidth parts to acquire the control signaling corresponding to other bandwidth parts is avoided, and the data transmission efficiency is improved.

In some possible implementations, the first transmission mode is unicast and the second transmission mode is multicast.

In some possible implementations, the first transmission mode is a first multicast, and the second transmission mode is a second multicast.

In some possible implementations, the first transmission mode is multicast and the second transmission mode is unicast.

In a fourth aspect, an apparatus is provided, which may be the first device or a chip in the first device. The apparatus has the functionality to implement the first or third aspect, and various possible implementations described above. The function can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In one possible design, the apparatus includes: the receiving and sending module comprises a receiving module and a sending module. Optionally, the apparatus further comprises a processing module, the transceiver module may be at least one of a transceiver, a receiver, and a transmitter, for example, and the receiving module and the transmitting module may include a radio frequency circuit or an antenna. The processing module may be a processor. Optionally, the apparatus further comprises a storage module, which may be a memory, for example. When included, the memory module is used to store instructions. The processing module is connected to the storage module, and the processing module can execute the instructions stored in the storage module or other instructions from other sources, so as to enable the apparatus to perform the communication method of the first aspect or the third aspect, and various possible implementations. In this design, the apparatus may be the first device.

In another possible design, when the device is a chip, the chip includes: a receiving module and a sending module, optionally, the apparatus further includes a processing module, and the receiving module and the sending module may be, for example, an input/output interface, a pin, a circuit, or the like on the chip. The processing module may be, for example, a processor. The processing module may execute instructions to cause a chip within the first device to perform the first or third aspects described above, and any possible implemented communication methods. Alternatively, the processing module may execute instructions in a memory module, which may be an on-chip memory module, such as a register, a cache, and the like. The memory module may also be located within the communication device, but outside the chip, such as a read-only memory (ROM) or other types of static memory devices that may store static information and instructions, a Random Access Memory (RAM), and so on.

The processor mentioned in any of the above may be a general Central Processing Unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling program execution of the communication method according to the first aspect or the third aspect, and various possible implementations.

In a fifth aspect, an apparatus for determining transmission resources is provided, where the apparatus may be a second device or a chip in the second device. The apparatus has the functionality to implement the second aspect described above, as well as various possible implementations. The function can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In one possible design, the apparatus includes: the receiving and sending module comprises a receiving module and a sending module. Optionally, the apparatus further comprises a processing module. The receiving module and the transmitting module may be at least one of a transceiver, a receiver, and a transmitter, for example, and the receiving and transmitting module may include a radio frequency circuit or an antenna. The processing module may be a processor.

Optionally, the apparatus further comprises a storage module, which may be a memory, for example. When included, the memory module is used to store instructions. The processing module is connected to the storage module, and the processing module can execute the instructions stored in the storage module or the instructions from other sources, so as to cause the apparatus to perform the method of the second aspect or any one of the above aspects.

In another possible design, when the device is a chip, the chip includes: the chip comprises a receiving module and a sending module, and optionally, the chip further comprises a processing module. The receiving module and the transmitting module may be, for example, input/output interfaces, pins or circuits, etc. on the chip. The processing module may be, for example, a processor. The processing module may execute instructions to cause the chip in the second device to perform the second aspect described above, and any possible implemented communication method.

Alternatively, the processing module may execute instructions in a memory module, which may be an on-chip memory module, such as a register, a cache, and the like. The memory module may also be located within the communication device, but outside the chip, such as a read-only memory (ROM) or other types of static memory devices that may store static information and instructions, a Random Access Memory (RAM), and so on.

The processor mentioned in any above may be a general purpose Central Processing Unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the program of the communication method according to the second aspect and any possible implementation.

A sixth aspect provides a computer storage medium having stored therein program code for instructing execution of the instructions of the method of the first or third aspect, and any possible implementation thereof.

In a seventh aspect, a computer storage medium is provided, in which program code is stored, the program code being used for instructing to execute the instructions of the method in the second aspect, and any possible implementation manner thereof.

In an eighth aspect, there is provided a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of the first or third aspect described above, or any possible implementation thereof.

In a ninth aspect, there is provided a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of the second aspect described above, or any possible implementation thereof.

A tenth aspect provides a communication system comprising means having functionality to implement the methods of the first aspect and various possible designs, and means having functionality to implement the methods of the second aspect and various possible designs.

In an eleventh aspect, there is provided a chip comprising a processor and an interface, the processor being configured to read instructions to perform the method of the first or third aspect, or any possible implementation thereof.

In a twelfth aspect, there is provided a chip comprising a processor and an interface, the processor being configured to read instructions to perform the method of the second aspect described above, or any possible implementation thereof.

Based on the above technical solution, the first device receives a control signaling including first information from the second device, where the first information is used to indicate a first transmission mode, and scrambling information of the control signaling corresponds to a second transmission mode. Therefore, the second device indicates the first transmission mode through the control signaling corresponding to the second transmission mode, so that the first device can flexibly adopt the first transmission mode for communication and/or adopt the second transmission mode for communication, and the communication efficiency is improved.

Drawings

FIG. 1 is a schematic diagram of one possible communication system to which the present application is applicable;

fig. 2 is a schematic flow chart of a method of transmitting control signaling according to an embodiment of the present application;

fig. 3 is a schematic flow chart diagram of a method of transmitting control signaling according to another embodiment of the present application;

FIG. 4 is a schematic flow chart diagram of a method of message transmission of an embodiment of the present application;

fig. 5 is a schematic block diagram of an apparatus for transmitting control signaling according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of an apparatus for transmitting control signaling according to an embodiment of the present application;

fig. 7 is a schematic block diagram of an apparatus for transmitting control signaling according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of an apparatus for transmitting control signaling according to an embodiment of the present application;

fig. 9 is a diagram of an apparatus for transmitting control signaling according to another embodiment of the present application;

fig. 10 is a diagram of an apparatus for transmitting control signaling according to another embodiment of the present application;

fig. 11 is a diagram illustrating an apparatus for transmitting control signaling according to another embodiment of the present application;

fig. 12 is a diagram illustrating an apparatus for transmitting control signaling according to another embodiment of the present application.

Detailed Description

The technical solution in the present application will be described below with reference to the accompanying drawings.

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: a Long Term Evolution (LTE) system, an LTE Frequency Division Duplex (FDD) system, an LTE Time Division Duplex (TDD) system, a fifth generation (5th generation, 5G) system, a New Radio (NR) and future mobile communication systems, and the like.

The method provided by the embodiment of the application can be applied to but not limited to the following fields: multimedia Broadcast Multicast Service (MBMS), Single cell point to multipoint (SC-PTM), Multicast Broadcast Service (Multicast and Broadcast Services, or Multicast/Broadcast Services, or Multicast-Broadcast Services, MBS), Multimedia Broadcast Multicast Service Single Frequency Network (Multimedia Broadcast Multicast Service Single Frequency Network, MBSFN), Dual-channel intelligent unicast (DC-IU), Broadcast (Broadcast), Multicast (Multicast), Broadcast Multicast (Multicast), Multicast (Multicast), Multicast, Internet, vehicular networking (vehicular to event, V2X), public safety (public safety), public safety (Multicast), Internet, Multicast (IPv 32), IPv 32, IPv 36, IPv 32, IPv 36, IoT), television Video (TV Video), Television (TV), linear TV (linear TV), Live (Live), broadcast services (radio services), etc.

The terminal in this embodiment may refer to a device having a wireless transceiving function, and may be referred to as a terminal device (terminal), a User Equipment (UE), a Mobile Station (MS), a mobile terminal device (MT), a vehicle-mounted terminal device, a remote station, a remote terminal device, and the like. The specific form of the terminal device may be a mobile phone (mobile phone), a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wearable tablet (pad), a desktop, a laptop, an all-in-one machine, a vehicle-mounted terminal device, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), or the like. The terminal device can be applied to the following scenarios: virtual Reality (VR), Augmented Reality (AR), industrial control (industrial control), unmanned driving (self driving), remote surgery (remote medical supply), smart grid (smart grid), transportation safety (transportation safety), smart city (smart city), smart home (smart home), and the like. The terminal device may be fixed or mobile. It should be noted that the terminal device may support at least one wireless communication technology, such as LTE, NR, Wideband Code Division Multiple Access (WCDMA), and the like.

The network device in the embodiment of the present application may be a device that provides a wireless communication function for a terminal device, and may also be referred to as a Radio Access Network (RAN) device. Network devices include, but are not limited to: next generation base station (next generation node B, gNB), evolved node B (eNB), baseband unit (BBU), transceiving point (TRP), Transmitting Point (TP), relay station, access point, etc. in 5G. The network device may also be a wireless controller, a Centralized Unit (CU), a Distributed Unit (DU), or the like in a Cloud Radio Access Network (CRAN) scenario. Therein, the network device may support at least one wireless communication technology, such as LTE, NR, WCDMA, etc.

In some deployments, the gNB may include centralized units CU and DUs. The gNB may also include an Active Antenna Unit (AAU). The CU implements part of the function of the gNB and the DU implements part of the function of the gNB. For example, the CU is responsible for processing non-real-time protocols and services, and implementing functions of a Radio Resource Control (RRC) layer and a Packet Data Convergence Protocol (PDCP) layer. The DU is responsible for processing a physical layer protocol and a real-time service, and implements functions of a Radio Link Control (RLC) layer, a Medium Access Control (MAC) layer, and a Physical (PHY) layer. The AAU implements part of the physical layer processing functions, radio frequency processing and active antenna related functions. Since the information of the RRC layer eventually becomes or is converted from the information of the PHY layer, the higher layer signaling, such as the RRC layer signaling, may also be considered to be transmitted by the DU or transmitted by the DU and the AAU under this architecture. It is to be understood that the network device may be a device comprising one or more of a CU node, a DU node, an AAU node. In addition, the CU may be divided into network devices in an access network (RAN), or may be divided into network devices in a Core Network (CN), which is not limited in this application.

In the embodiment of the application, the terminal or the network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. The hardware layer includes hardware such as a Central Processing Unit (CPU), a Memory Management Unit (MMU), and a memory (also referred to as a main memory). The operating system may be any one or more computer operating systems that implement business processing through processes (processes), such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a windows operating system. The application layer comprises applications such as a browser, an address list, word processing software, instant messaging software and the like. Furthermore, the embodiment of the present application does not particularly limit the specific structure of the execution subject of the method provided by the embodiment of the present application, as long as the execution subject can communicate with the method provided by the embodiment of the present application by running the program recorded with the code of the method provided by the embodiment of the present application, for example, the execution subject of the method provided by the embodiment of the present application may be a terminal or a network device, or a functional module capable of calling the program and executing the program in the terminal or the network device.

In addition, various aspects or features of the present application may be implemented as a method, apparatus, or article of manufacture using standard programming and/or engineering techniques. For example, computer-readable media may include, but are not limited to: magnetic storage devices (e.g., hard disk, floppy disk, or magnetic tape), optical disks (e.g., Compact Disk (CD), Digital Versatile Disk (DVD), etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memory (EPROM), card, stick, or key drive, etc.). In addition, various storage media described herein can represent one or more devices and/or other machine-readable media for storing information. The term "machine-readable medium" can include, without being limited to, wireless channels and various other media capable of storing, containing, and/or carrying instruction(s) and/or data.

It is understood that the network devices and terminals may be deployed on land, including indoors or outdoors, hand-held or vehicle-mounted; can also be deployed on the water surface; it may also be deployed on airborne airplanes, balloons, and satellites. The embodiment of the application does not limit the application scenarios of the wireless access network equipment and the terminal.

Fig. 1 is a schematic diagram of one possible communication system to which the present application is applicable. The communication system in fig. 1 may include terminals (e.g., terminal 10, terminal 20, terminal 30, terminal 40, terminal 50, and terminal 60) and a network device 70. The terminals 10, 20, 30, 40 and 60 in fig. 1 may perform uplink and downlink transmissions with the network device 70. For example, the network device 70 may transmit downlink signals/data to the terminals 10, 20, 30, 40, and 60, or may receive uplink signals/data transmitted by the terminals 10, 20, 30, 40, and 60. Further, the communication system in fig. 1 may also include a terminal. For example, the terminal 40, the terminal 50, and the terminal 60 may be regarded as a communication system, and the terminal 60 may transmit signals/data to the terminal 40 and the terminal 50 or may receive signals/data transmitted by the terminal 40 and the terminal 50. That is, the embodiments of the present application may be applied to downlink transmission, may also be applied to uplink transmission, and may also be applied to sidelink transmission.

The wireless communication link over which the terminal sends data (i.e., uplink data) or uplink control information to the network device may be referred to as an Uplink (UL). A wireless communication link in which a network device transmits data (i.e., downlink data) or downlink control information to a terminal may be referred to as Downlink (DL). A communication link for direct communication between a terminal and the terminal may be referred to as a Sidelink (SL). The data transmitted between the terminals may be referred to as SL data.

The embodiment of the present application does not limit the transmission direction of the signal/data.

The technical solution of the embodiment of the present application may be executed by two communication apparatuses, which take a first device and a second device as an example for illustration. The first device may be a terminal or a communication apparatus capable of supporting the functions required to implement the method. The first device may also be other communication means, such as a system-on-chip. The same is true for the second device, which may be a network device or a terminal or a communication means capable of supporting the functions required for implementing the method, but may of course also be other communication means, such as a system-on-chip.

The implementation manners of the first device and the second device are not limited, for example, the first device may be a terminal, and the second device is a network device; or the first device is a terminal and the second device is a communication apparatus or the like capable of supporting the functions required to implement the method.

It should be noted that, in the embodiment of the present application, a specific implementation process is described by taking the first device as an example, and in an actual application, the MAC entity and/or the PHY layer of the first device may also be used to perform the embodiment of the present application.

It should be noted that the embodiments of the present application may be applied to a communication system including one or more second devices, and may also be applied to a communication system including one or more first devices, which is not limited in the present application. One of the second devices may send data and/or first control signaling to one or more of the first devices. The plurality of second devices may also send data and/or first control signaling to the one or more first devices.

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

One, multicast and unicast

Multicasting may include any one or more of: broadcast in MBMS or MBS; multicast in MBMS or MBS; multicast in MBMS or MBS; multicast in V2X; multicast in V2X; broadcast in V2X; multicasting; broadcasting; multicast; groupcast; a broadcast. For example, in multicast, the second device transmits data 1, and a plurality of first devices can receive the data 1. Alternatively, multicast may be understood as multicast transmission.

Unicast may include any one or more of the following: unicast in V2X; unicast. Alternatively, unicast may be understood as unicast transmission.

For example, multicasting may be understood as: for one data 1, the second device transmits once, and a plurality of first devices can each receive the data 1. For example, whereas unicast may be understood as: for one data 1, if the second device is to send to multiple first devices, the second device needs to send the data 1 to each first device separately.

Second, Radio Network Temporary Identity (RNTI).

A. Multicast RNTI

The multicast RNTI may be used for any one or more of the following: for scheduling dynamic resources; retransmission resources for scheduling dynamic resources; for activating configuration resources; for reactivating the configuration resource; for deactivating the configuration resource; retransmission resources for scheduling the configuration resources; is used for multicast; scheduling for multicast; for configuring scheduled multicast transmissions; for activation; for deactivation; for reactivation; for retransmission; for dynamically scheduling multicast transmissions.

Illustratively, the multicast RNTI may include any one or any number of: group-RNTI (e.g., group-RNTI, G-RNTI), group-configured scheduling-RNTI (e.g., group-configured scheduling-RNTI, G-CS-RNTI), group-cell-RNTI (e.g., group-cell-RNTI, G-C-RNTI), group-RNTI (e.g., multicast-RNTI, M-RNTI), group-configured scheduling-RNTI (e.g., multicast-configured scheduling-RNTI, M-CS-RNTI), group-cell-RNTI (e.g., multicast-cell-RNTI, M-C-RNTI), and the like.

B. Unicast RNTI

The unicast RNTI may be used for any one or any number of: for scheduling dynamic resources; retransmission resources for scheduling dynamic resources; for activating configuration resources; for reactivating the configuration resource; for deactivating the configuration resource; retransmission resources for scheduling the configuration resources; for unicast; scheduling for unicast; for configuring scheduled unicast transmissions; for activation; for deactivation; for reactivation; for retransmission; for dynamically scheduling unicast transmissions; for contention resolution; for MSG3 transmission.

Illustratively, the unicast RNTI may include any one or any number of: a cell radio network temporary identifier (C-RNTI), a configured scheduled radio network temporary identifier (CS-RNTI), and a temporary cell radio network temporary identifier (TC-RNTI).

C. First RNTI

The first RNTI is for any one or more of: paging, system information change notification, PWS notification, and system information broadcast.

Illustratively, the unicast RNTI may include any one or any number of: paging RNTI (P-RNTI), system information RNTI (SI-RNTI).

Dynamic resource and allocation resource

The dynamic resources may include any one or more of: dynamically allocated resources for the downlink; a dynamic grant resource for an uplink; dynamic authorized resources for sidelink; dynamic resources for unicast; dynamic resources for multicast.

The configuration resources may include any one or more of: allocating resources for the configuration of the downlink; a configuration grant resource for an uplink; the configuration of the sidelink authorizes resources; configuration resources for unicast; configuration resources for multicast.

Fourthly, others

The index (index) or indices may be understood/replaced with any of the following: an identification (e.g., an identity, ID) or an indication (e.g., an indicator).

The bandwidth part may be understood/replaced by a part of the bandwidth.

The index of the bandwidth part or the index of the BWP or the BWP index may be understood/replaced by any of the following: identification of the bandwidth part or identification of the BWP or ID of the BWP.

Fields can be understood/replaced with fields or fields.

BWP is supported in NR, and after multicast is introduced in NR, BWP and transmission mode may have a correspondence. For example, different multicasts may be transmitted on respective corresponding BWPs. For another example, unicast and multicast are also transmitted on the corresponding BWPs, respectively. In the conventional scheme, only data or signaling corresponding to one transmission mode can be transmitted on the BWP corresponding to the transmission mode, and the communication efficiency is low. In addition, when a first device (e.g., a terminal) operates on a BWP corresponding to one transmission mode, it cannot know/know the transmission condition (e.g., whether there is data transmission) on the BWP corresponding to another transmission mode. That is, according to the related art, the first device operates on BWP1, BWP1 corresponding to transmission mode 1; the first device is unable to acquire control information (e.g., DCI) corresponding to transmission of data on BWP2, BWP2 corresponding to transmission mode 2; the first device may not know whether the second device (e.g., the network device) is performing data transmission at BWP 2.

Fig. 2 shows a schematic flow chart of a method for transmitting control signaling according to an embodiment of the present application.

The first device receives first control signaling from the second device, where the first control signaling includes first information, the first information is used to indicate a first transmission mode, and scrambling information (or the first control signaling) of the first control signaling corresponds to a second transmission mode. Accordingly, the second device sends the first control signaling to the first device.

The first device determines to communicate with the second device over the bandwidth portion corresponding to the first transmission mode and/or determines to communicate with the second device over the bandwidth portion corresponding to the second transmission mode, 202, according to the first control signaling.

It is to be understood that the first device communicates with the second device over the bandwidth portion corresponding to the first transmission mode and communicates with the second device over the bandwidth portion corresponding to the second transmission mode may be understood as the first device communicates with the second device over the bandwidth portion corresponding to the first transmission mode and the bandwidth portion corresponding to the second transmission mode, and the present application is not limited to communicating at the same time.

For a more clear description of the present application, a possible implementation of the present application is described by taking the first control signaling as the first DCI, the first device as the terminal, and the second device as the network device.

It is to be understood that "the first device receives first control signaling from the second device, the first control signaling including first information indicating a first transmission mode, scrambling information of the first control signaling (or, the first control signaling) corresponding to a second transmission mode. Accordingly, the second device sends the first control signaling to the first device. "may be: "the terminal receives a first DCI from the network device, where the first DCI includes first information indicating a first transmission mode, and scrambling information of the first DCI (or the first DCI) corresponds to a second transmission mode. Accordingly, the network device transmits the first DCI to the terminal. "

"the terminal receives the first DCI from the network device, and the scrambling information of the first DCI (or the first DCI) corresponds to the second transmission mode" may include/be replaced with: and the terminal receives the first DCI on the BWP corresponding to the second transmission mode.

"the scrambling information of the first DCI corresponds to the second transmission mode" may be understood as: scrambling the first DCI with scrambling information, the scrambling information corresponding to a second transmission mode; or, scrambling the first DCI by the scrambling information, the first DCI corresponding to the second transmission mode; or, the first DCI is scrambled by the scrambling information, and the scrambling information, the first DCI and the second transmission mode correspond to each other.

The "scrambling the first DCI with the scrambling information" may include: the Cyclic Redundancy Check (CRC) of the first DCI is scrambled by the scrambling information, or the CRC of the first DCI is scrambled by the scrambling information (the first DCI with CRC scrambled by scrambling information).

It will be appreciated that different transmission modes may correspond to different scrambling information.

Alternatively, the scrambling information may be understood as a scrambling identity.

Optionally, the scrambling information may include any one or more of: multicast RNTI; unicast RNTI; an RNTI for scheduling; a temporary mobile group identity (e.g., a temporal mobile group identity, TMGI); a session identification (e.g., a multicast session identification); a transmission identifier (e.g., a multicast identifier, or a unicast identifier); a first RNTI.

The multicast identity may comprise any one or more of: multicast RNTI; TMGI; a session identification (e.g., a multicast session identification).

For example, the scrambling information corresponding to the first DCI is a multicast RNTI, and the first DCI/multicast RNTI corresponds to a multicast.

For example, the scrambling information corresponding to the first DCI is a unicast RNTI, and the first DCI/unicast RNTI corresponds to a unicast.

For example, the scrambling information corresponding to the first DCI is multicast RNTI1, and the first DCI/multicast RNTI1 corresponds to multicast 1.

For example, the scrambling information corresponding to the first DCI is the first RNTI, and the first DCI/first RNTI corresponds to the transmission corresponding to the first RNTI.

Optionally, the transmission corresponding to the first RNTI may include/be idle/inactive transmission.

It is to be understood that the first information may explicitly or implicitly indicate the first transmission mode, which is not limited in this application.

It is to be understood that the first DCI may represent the first information through a reserved field or a newly added field, which is not limited in this application.

The present application takes the cases of the first transmission mode and the second transmission mode as the first possible case, the second possible case, the third possible case, or the fourth possible case as an example for explanation, but the present application does not limit the cases of the first transmission mode and the second transmission mode to only be the four cases.

The first possible scenario: the second transmission mode is unicast and the first transmission mode is multicast.

Specifically, in the case that the scrambling information/first DCI of the first DCI corresponds to unicast, the first DCI further includes first information indicating multicast. For example, the BWP corresponding to the second transmission mode is a unicast BWP. For example, the terminal receives first DCI on the unicast BWP, the first DCI further including first information indicating multicast.

Optionally, for the first transmission mode being multicast, multicast may be understood as a certain multicast (e.g. multicast 2). The G-RNTI corresponding to multicast may be understood as G-RNTI2 corresponding to multicast 2.

The terminal acquires the information related to multicast service reception through the first information carried in the first DCI corresponding to the unicast service, thereby providing the terminal with the possibility of receiving the multicast service by switching from the unicast BWP to the multicast BWP, increasing the flexibility of receiving different types of services, simultaneously acquiring the multicast reception information in the unicast reception process so as to quickly switch to the multicast, reducing the time delay of multicast reception and improving the efficiency of data transmission.

The second possible scenario: the second transmission mode is multicast and the first transmission mode is unicast.

Specifically, in the case where the scrambling information/first DCI of the first DCI corresponds to multicast, the first DCI further includes first information indicating unicast. For example, the BWP corresponding to the second transmission mode is a multicast BWP. For example, the terminal receives first DCI on the multicast BWP, the first DCI further including first information indicating unicast.

A third possible scenario: the second transmission mode is a first multicast and the first transmission mode is a second multicast.

In particular, the multicast may be divided into different multicasts. For example, the multicast corresponds to different objects, and the number of multicasts differs. For example, the BWP corresponding to the second transmission mode is the BWP corresponding to the first multicast. For example, the terminal receives first DCI on the BWP corresponding to the first multicast, where the first DCI further includes first information indicating a second multicast.

For example, in the case where the scrambling information/first DCI of the first DCI corresponds to the first multicast, the first DCI further includes first information indicating the second multicast.

A fourth possible scenario: the second transmission mode is transmission corresponding to the first RNTI, and the first transmission mode is multicast. For example, the BWP corresponding to the second transmission mode is an initial BWP. For example, the terminal receives first DCI on the initial BWP, the first DCI further including first information indicating multicast.

Specifically, when the scrambling information of the first DCI/the first DCI corresponds to transmission corresponding to the first RNTI, or when the scrambling information of the first DCI is the first RNTI, the first DCI further includes first information for indicating multicast.

It is to be understood that the first transmission mode is different from the second transmission mode.

Optionally, any one or more of the first information, the second identification information, and a preset field (e.g., a first value of the preset field) may further be used to indicate that the BWP indicated by the C bits or the BWP field is the BWP associated with the first transmission mode.

For example, for the first possible case, any one or more of the first values of the first information/second identification information/preset field is used to indicate that the BWP indicated by the C bits or BWP field is the multicast-associated BWP.

For example, for the second possible case, any one or more of the first values of the first information/second identification information/preset field is used to indicate that the BWP indicated by the C bits or BWP field is the unicast associated BWP.

For example, for the third possible case, any one or more of the first values of the first information/second identification information/preset field is used to indicate that the BWP indicated by the C bits or the BWP field is the BWP associated with the second multicast.

In one possible design, the first information includes or is second identification information, and the second identification information/second identification is used for scheduling the first transmission mode or transmission/data/resources corresponding to the first transmission mode, or the second identification information/second identification is associated with the first transmission mode.

The first information is the second identification information, which can be understood as: the second identification information is used to indicate the first transmission mode.

Specifically, "for scheduling the first transmission mode or the transmission/data/resources corresponding to the first transmission mode" may include any one or more of the following: for scheduling dynamic resources; a retransmission resource for the dynamic resource; for activating configuration resources; for reactivating the configuration resource; for deactivating the configuration resource; retransmission resources for scheduling the configuration resources; for a first transmission mode; scheduling for a first transmission mode; for scrambling; for configuring scheduling of a first transmission mode transmission; for activation; for deactivation; for reactivation; for retransmission; for dynamically scheduling a first transmission mode transmission.

Optionally, the second identification information/second identification may include any one or more of the following: multicast RNTI; unicast RNTI; an RNTI for scheduling; TMGI; a session identification (e.g., a multicast session identification); a transmission identifier (e.g., multicast identifier, unicast identifier); and identifying the multicast group.

For a multicast group it can be understood that: a multicast group may include one or more multicasts. For example, multicasts belonging to the same multicast group correspond to the same BWP (e.g., the same BWP or BWPs) or other same parameters. One multicast group corresponds to one multicast group identifier. Optionally, the corresponding relationship between the multicast group and the multicast may be configured or preconfigured by the base station, or may be specified by a protocol. The terminal or network device may determine the corresponding BWP based on the multicast group identification/multicast group.

Illustratively, the first transmission mode is unicast, and the second identification may include any one or more of: unicast RNTI (e.g., C-RNTI or CS-RNTI), a transmission identity (e.g., unicast identity).

Illustratively, the first transmission mode is multicast, and the second identification information may include any one or more of the following: multicast RNTI and TMGI; a session identification (e.g., a multicast session identification); a transmission identifier (e.g., a multicast identifier); and identifying the multicast group.

It is to be understood that the second identification information may explicitly or implicitly indicate the first transmission mode, which is not limited in this application.

In one implementation, the second identification information may be a second identification.

For example, for the first possible case, the first information includes/is G-RNTI (i.e., the second identification information is G-RNTI), and the scrambling information of the first DCI is C-RNTI or CS-RNTI. In this case, the terminal receives the first DCI scrambled by the C-RNTI or CS-RNTI, and may also obtain multicast-related information (e.g., G-RNTI). The terminal may determine the BWP to which the multicast corresponds (e.g., the multicast corresponds to BWP1, or the multicast to which the G-RNTI corresponds to BWP1, or the G-RNTI corresponds to BWP 1). Optionally, the terminal may perform any one or more of the following based on the obtained multicast-related information: the method includes switching to BWP (e.g., switching to BWP corresponding to multicast), activating BWP corresponding to multicast, further receiving data corresponding to multicast, and determining to communicate with the network device on BWP corresponding to multicast. Optionally, the implementation may be applicable to a case where multicast (e.g., multicast corresponding to G-RNTI, or all multicast)/G-RNTI (e.g., G-RNTI included in the first DCI) corresponds to one BWP.

For another example, for the second possible case, the first information includes/is C-RNTI or CS-RNTI (i.e., the second identification information is C-RNTI or CS-RNTI), the scrambling information of the first DCI is G-RNTI, and the G-RNTI is associated with multicast. In this case, the terminal receives the first DCI scrambled by the G-RNTI, and may also obtain unicast-related information (e.g., C-RNTI or CS-RNTI). The terminal may determine a unicast corresponding BWP (e.g., an initial BWP). Optionally, the terminal may perform any one or more of the following based on the obtained unicast-related information: the method includes switching BWP (e.g., to a unicast corresponding BWP), activating the unicast corresponding BWP, further receiving unicast corresponding data, and determining to communicate with the network device on the unicast corresponding BWP.

For another example, for the third possible case, the first information includes/is G-RNTI2 (i.e., the second identification information is G-RNTI2), the scrambling information of the first DCI is G-RNTI1, and G-RNTI1 is associated with multicast 1. In this case, the terminal receives the first DCI scrambled by G-RNTI1, and may also obtain multicast 2-related information (e.g., G-RNTI 2). The terminal may determine that multicast 2 corresponds to BWP (e.g., multicast 2 corresponds to BWP2, or multicast 2 corresponds to G-RNT2 corresponds to BWP2, or G-RNT2 corresponds to BWP 2). Optionally, the terminal may perform any one or more of the following based on the obtained multicast 2 related information: BWP switching (e.g., switching to BWP corresponding to multicast 2), activating BWP corresponding to multicast 2, further receiving data corresponding to multicast 2, and determining to communicate with the network device on BWP corresponding to multicast 2. Optionally, the implementation may be applied to the case where the multicast 2/G-RNT2 corresponds to one BWP.

In another implementation, the second identification information may be an index (index) of the second identification.

It is understood that there is a correspondence between the second identifier and the index of the second identifier. Specifically, the terminal acquires the first DCI, where the first DCI includes an index of the second identifier, and a correspondence exists between the second identifier and the index of the second identifier, and the terminal may determine the second identifier.

By including the index of the second identifier in the first DCI, the number of bits occupied by the second identifier information in the first DCI can be reduced, or in other words, the overhead of transmission is reduced.

Optionally, the index of the second identifier may include any one or more of the following items: multicast RNTI index (e.g., G-RNTI index); unicast RNTI index (e.g., C-RNTI index, CS-RNTI index); RNTI index for scheduling; a temporary mobile group identity index (e.g., TMGI index); a session identification index (e.g., a multicast session identification index); a transmission identifier index (e.g., multicast identifier index, unicast identifier index); the multicast group identification index.

For example, for the first possible case, the first information includes/is a G-RNTI index (i.e., the second identification information is the G-RNTI index), and the scrambling information of the first DCI is a C-RNTI or a CS-RNTI. In this case, the terminal may receive the first DCI scrambled with the C-RNTI or CS-RNTI and may obtain multicast-related information (e.g., G-RNTI index). The terminal may determine the corresponding G-RNTI/multicast. The terminal may determine the BWP to which the multicast corresponds (e.g., the multicast corresponds to BWP1, or the multicast corresponding to G-RNTI/G-RNTI index corresponds to BWP1, or G-RNTI/G-RNTI index corresponds to BWP 1). Optionally, the terminal may perform any one or more of the following based on the obtained multicast-related information: the method includes switching to BWP (e.g., switching to BWP corresponding to multicast), activating BWP corresponding to multicast, further receiving data corresponding to multicast, and determining to communicate with the network device on BWP corresponding to multicast. Optionally, the possible implementation manner may be applicable to multicast (e.g., multicast corresponding to G-RNTI/G-RNTI index, or all multicast)/G-RNTI (e.g., G-RNTI/G-RNTI index included in the first DCI corresponds to one BWP).

For example, for the third possible case, the first information includes/is G-RNTI2 index (i.e., the second identification information is G-RNTI2 index), the scrambling information of the first DCI is G-RNTI1, and G-RNTI1 is associated with multicast 1. In this case, the terminal receives the first DCI scrambled by G-RNTI1, and may also obtain multicast 2-related information (e.g., G-RNTI2 index). The terminal may determine the corresponding G-RNTI 2/multicast. The terminal may determine that BWP2 corresponds to multicast 2 (e.g., multicast 2 corresponds to BWP2, or multicast 2 corresponds to BWP2 for G-RNTI2/G-RNTI2 index, or G-RNTI2/G-RNTI2 index corresponds to BWP 2). Optionally, the terminal may perform any one or more of the following based on the obtained multicast 2 related information: the method comprises the steps of switching to BWP (for example, switching to BWP2 corresponding to multicast 2), activating BWP2 corresponding to multicast 2, further receiving data corresponding to multicast 2, and determining to communicate with the network equipment on BWP2 corresponding to multicast 2. Optionally, the possible implementation manner may be applicable to a case where the multicast 2/G-RNTI2/G-RNTI2 index corresponds to one BWP.

For the second possible case, similar to the first possible case and the third possible case, the description is omitted here.

Illustratively, the second identifier is a G-RNTI, the G-RNTI usually occupies 16 bits, one G-RNTI can correspond to one multicast, and if the G-RNTI is included in the first DCI, the number of bits occupied by the G-RNTI is large. The first DCI can include a G-RNTI index, a corresponding relation exists between G-RNTI/multicast and the G-RNTI index, the terminal can also determine the corresponding G-RNTI/multicast, and the number of bits occupied by the second identification information in the first DCI is reduced, or the transmission overhead is reduced.

Optionally, the terminal and/or the network device may determine, according to the second information, a corresponding relationship between the second identifier and the index of the second identifier.

The second information may include/be used to indicate a correspondence between the second identity and an index of the second identity. For example, the correspondence between the second identifier and the index of the second identifier may be any one or more of the following: the corresponding relation between the unicast identification and the index; the corresponding relation between the multicast identification and the index of the interested multicast; the corresponding relation between the multicast identifier and index of the multicast which is not interested any more; corresponding relation between unicast and index; unicast identification; multicast identification of the multicast in which the terminal is interested.

The multicasts of interest may include multicasts that the terminal is interested in receiving and/or multicasts that the terminal is receiving.

Optionally, the terminal sends a second message to the network device, where the second message includes the second information.

Optionally, the second message is used to indicate to the network device a multicast in which the terminal is interested and/or is no longer interested. For example, the second message may be an indication of interest.

It should be noted that "the second information may include/be used to indicate a correspondence between the second identifier and an index of the second identifier" may explicitly or implicitly indicate a "correspondence between the second identifier and an index of the second identifier," and is not limited herein.

For example, the terminal sends the second message to the network device, and the terminal and/or the network device may determine the index of the second identifier according to the order of the second identifier in the second message. For example, the index of the second identifier corresponding to the first second identifier is 1, the index of the second identifier corresponding to the second identifier is 2, and the index of the second identifier corresponding to the nth second identifier is N. For another example, the index of the second identifier corresponding to the first second identifier is 0, the index of the second identifier corresponding to the second identifier is 1, and the index of the second identifier corresponding to the nth second identifier is N-1.

It will be appreciated that the terminal may send a second message to the network device, but the network device may not receive the second message. In this case, the network device may determine the correspondence between the second identity and the index of the second identity based on the second information in the second message received before, but the terminal determines the correspondence between the second identity and the index of the second identity based on the second information in the second message transmitted last. For the same index of the second identifier, the terminal and the network device may determine a different second identifier or a different unicast/multicast, which may cause misalignment between the terminal and the network device, and may affect transmission between the terminal and the network device. For example, for index1, the network device considers that there is a correspondence between index1 and multicast 1/BWP1, the first DCI includes index1, and the network device wants the terminal to switch to BWP1 for communication; however, the terminal considers that there is a correspondence between the index1 and the multicast 2/BWP2, the first DCI includes the index1, and the terminal switches to the BWP2 for communication. In this case, the network device communicates (e.g., sends data) with the terminal over BWP1, but the terminal is operating over BWP2, resulting in no way of normal communication between the two.

Optionally, the terminal receives the acknowledgement information sent by the network device. Accordingly, the network device sends the confirmation information to the terminal.

Optionally, the confirmation information may be used for any one or more of: for instructing the network device to receive the second message; the network device is used for instructing the network device to apply/determine the corresponding relation between the second identifier and the index of the second identifier according to the second information in the second message; the terminal is used for indicating that the terminal can apply/determine the corresponding relation between the second identifier and the index of the second identifier according to the second information in the second message; the network device is used for indicating the corresponding relation between the second identifier indicated by the second information in the second message and the index of the second identifier; and the index is used for indicating that the terminal can apply the corresponding relation between the second identifier indicated by the second information in the second message and the index of the second identifier.

Illustratively, the network device receives the second message and sends acknowledgement information to the terminal, where the acknowledgement information is used for indicating that the network device receives the second message. The terminal receives the confirmation information, and may determine that the network device has received the second message. The terminal and/or the network device may apply/determine, according to the second information in the second message, a correspondence between the second identifier and the index of the second identifier, or the terminal and/or the network device may apply a correspondence between the second identifier indicated by the second information in the second message and the index of the second identifier. In this case, for the same second identifier, the terminal and the network device may determine the same second identifier or the same unicast/multicast.

Optionally, the acknowledgement information may be carried in an RRC message, an RLC message (e.g., RLC PDU), a MAC message (e.g., MAC CE), a PHY message (e.g., DCI or PDCCH), a broadcast message (e.g., system information), a multicast message.

Illustratively, the acknowledgement information is carried in the first RLC PDU. For example, the first RLC PDU is an RLC control PDU, e.g., STATUS PDU.

Illustratively, the acknowledgement information is carried in the first MAC CE.

Optionally, the first MAC CE may be identified by a Logical Channel Identity (LCID) or an extended logical channel identity (eLCID).

For example, the LCID is 5 bits.

For example, the eLCID is 8bit or 16 bit.

Alternatively, the size of the first MAC CE may be fixed (e.g., 0bit) or variable.

It should be noted that the content related to the confirmation information may be implemented as a separate implementation, and is not dependent on step 201 and/or step 202.

In another possible design, the first information includes or is a predetermined field, and the predetermined field is associated with the first transmission mode.

The first information is a preset field, which can be understood as: the preset field is used to indicate a first transmission mode.

Optionally, the first value of the preset field or the presence of the preset field may be associated with the first transmission mode. For example, the preset field may occupy/correspond to one or more bits. Taking the example that the preset field occupies/corresponds to one bit, if the first value of the preset field is "1", it indicates that the first information indicates the first transmission mode; or, if the first value of the preset field is "0", it indicates that the first information indicates the first transmission mode.

It is to be understood that the second value of the preset field (for example, taking the preset field occupying/corresponding to one bit as an example for explanation, the first value of the preset field is "0" or "1") may be understood that the first information is not used for indicating the first transmission mode. The first value and the second value may be different values of one bit. For example, the first value is "1", and the second value is "0"; or the first value is "0" and the second value is "1".

For example, the second value of the preset field indicates that the C bits or the BWP indicated by the BWP field is the BWP associated with the second transmission mode.

For example, for the first possible case, the scrambling information of the first DCI is C-RNTI or CS-RNTI, and a preset field in the first DCI indicates multicasting. In this case, the terminal receives the first DCI scrambled by the C-RNTI or CS-RNTI, and can also obtain multicast-related information. The terminal may determine that the multicast corresponds to a BWP (e.g., the multicast corresponds to BWP 1). Optionally, the terminal may perform any one or more of the following based on the obtained multicast-related information: the method includes switching to BWP (e.g., switching to BWP corresponding to multicast), activating BWP corresponding to multicast, further receiving data corresponding to multicast, and determining to communicate with the network device on BWP corresponding to multicast. Alternatively, the design may be adapted for multicast to a BWP.

For example, for the second possible case, the scrambling information of the first DCI is multicast RNTI, and the preset field in the first DCI indicates unicast. In this case, the terminal receives the first DCI scrambled by the G-RNTI, and may also obtain unicast-related information. The terminal may determine a unicast corresponding BWP (e.g., an initial BWP). Optionally, the terminal may perform any one or more of the following based on the obtained unicast-related information: the method includes switching BWP (e.g., to a unicast corresponding BWP), activating the unicast corresponding BWP, further receiving unicast corresponding data, and determining to communicate with the network device on the unicast corresponding BWP.

For example, for the third possible case, the scrambling information of the first DCI is G-RNTI1, and a preset field in the first DCI indicates multicast 2. In this case, the terminal receives the first DCI scrambled by G-RNTI1, and can also obtain multicast 2-related information. The terminal may determine that multicast 2 corresponds to a BWP (e.g., multicast 2 corresponds to BWP 2). Optionally, the terminal may perform any one or more of the following based on the obtained multicast 2 related information: BWP switching (e.g., switching to BWP corresponding to multicast 2), activating BWP corresponding to multicast 2, further receiving data corresponding to multicast 2, and determining to communicate with the network device on BWP corresponding to multicast 2. Optionally, the design may be applicable to the case of multicast for 2 BWPs, where BWP1 corresponds to one or more multicasts (e.g., multicast 1) and BWP2 corresponds to another one or more multicasts (e.g., multicast 2).

It is to be understood that the preset field may explicitly or implicitly indicate the first transmission mode, which is not limited in this application.

In yet another possible design, the first information includes or is a BWP field, and the BWP field is used to indicate the first transmission mode.

The first information being the BWP field may be understood as: the BWP field is used to indicate a first transmission mode.

Specifically, the BWP field may be understood as a field for indicating a bandwidth part.

Optionally, the BWP field may be used to indicate a BWP index, or a location and bandwidth of BWP.

Alternatively, the BWP field may be a BWP indication (indicator) field.

It is understood that the "BWP field" is a description of a name, which may also be substituted/referred to as the first field or other names, etc.

Optionally, the BWP field is C bits. The BWP field is used to indicate any one or more of: a first transmission mode, a target first bandwidth portion, a first bandwidth portion. The first bandwidth portion and/or the target first bandwidth portion is associated with a first transmission mode.

Optionally, the BWP field may be used to indicate that the first transmission mode may include any one or more of:

(1) the BWP field is used to indicate a BWP/BWP index corresponding to the first transmission mode, and the BWP field is used to indicate the first transmission mode.

For example, the first transmission mode corresponds to a separate BWP field, which is used to indicate the first transmission mode.

For example, the BWP field exists or the value of the BWP field is valid, the BWP field indicating the first transmission mode.

(2) The first part of the BWP field takes values corresponding to the first transmission mode.

For example, the first transmission mode and the second transmission mode correspond to the same BWP field.

The content related to the first part of values of the BWP field may refer to the content related to the first part of values of C bits or the first part of values of all bits, which is not described herein again.

(3) The first part of bits in the BWP field corresponds to the first transmission mode.

For example, a first part of bits in the BWP field exists, or the value of the first part of bits in the BWP field is valid, and the BWP field is used to indicate the first transmission mode.

The content related to the first part of bits in the BWP field may refer to the content related to the first part of bits in the C bits, and is not described herein again.

(4) The BWP field may be used to indicate a transmission mode.

It is to be understood that the BWP field may explicitly or implicitly indicate the first transmission mode, which is not limited in this application.

Illustratively, there is a correspondence relationship between the BWP/BWP index and the transmission mode, and the transmission mode corresponding to the BWP field can be known through the BWP indicated by the BWP field/BWP index indicated by the BWP field and the correspondence relationship between the BWP/BWP index and the transmission mode.

For example, for the first possible case, the BWP field in the first DCI indicates multicast, and the scrambling information of the first DCI is C-RNTI or CS-RNTI. In this case, the terminal receives the first DCI scrambled by the C-RNTI or CS-RNTI, and may also obtain multicast-related information (e.g., BWP information). The terminal may determine the BWP corresponding to the multicast. Optionally, the terminal may perform any one or more of the following based on the obtained multicast-related information: the method includes switching to BWP (e.g., switching to BWP corresponding to multicast), activating BWP corresponding to multicast, further receiving data corresponding to multicast, and determining to communicate with the network device on BWP corresponding to multicast. Alternatively, the design may be applicable to a multicast (e.g., all multicast) for a group of BWPs (e.g., one or more BWPs).

For another example, for the second possible case, the BWP field in the first DCI indicates unicast, the scrambling information of the first DCI is G-RNTI, and the G-RNTI is associated with multicast. In this case, the terminal receives the first DCI scrambled by the G-RNTI, and may also obtain unicast-related information (e.g., BWP information). The terminal may determine the BWP to which unicast corresponds. Optionally, the terminal may perform any one or more of the following based on the obtained unicast-related information: the method includes switching BWP (e.g., to a unicast corresponding BWP), activating the unicast corresponding BWP, further receiving unicast corresponding data, and determining to communicate with the network device on the unicast corresponding BWP.

For another example, for the third possible case, the BWP field in the first DCI indicates multicast 2, the scrambling information of the first DCI is G-RNTI1, and G-RNTI1 is associated with multicast 1. In this case, the terminal receives the first DCI scrambled by the G-RNTI1, and may also obtain multicast 2-related information (e.g., BWP information). The terminal may determine the BWP corresponding to multicast 2. Optionally, the terminal may perform any one or more of the following based on the obtained multicast 2 related information: BWP switching (e.g., switching to BWP corresponding to multicast 2), activating BWP corresponding to multicast 2, further receiving data corresponding to multicast 2, and determining to communicate with the network device on BWP corresponding to multicast 2. Optionally, the design may be applicable to the case where the multicast corresponds to 2 groups of BWPs (e.g., each group of BWPs may include one or more BWPs), where the first group of BWPs corresponds to one or more multicasts (e.g., multicast 1) and the second group of BWPs corresponds to another one or more multicasts (e.g., multicast 2). Alternatively, the design may be adapted for multicast 2 for one or more BWPs.

In yet another possible design, the first information includes/is the second identification information and a preset field.

The first information is the second identification information and the preset field can be understood as: the second identification information and the preset field are used for indicating the first transmission mode.

For example, for the first possible case, the terminal receives a first DCI scrambled by a C-RNTI or a CS-RNTI, the first DCI including a G-RNTI (i.e., the second identification information is the G-RNTI) and a preset field, the preset field indicating multicasting. The terminal can obtain multicast related information, specifically, the terminal determines multicast according to the preset field, and determines the multicast as the multicast associated with the G-RNTI according to the second identification information. The terminal may determine the BWP to which the multicast corresponds (e.g., the multicast corresponds to BWP1, or the multicast to which the G-RNTI corresponds to BWP1, or the G-RNTI corresponds to BWP 1). Optionally, the terminal may perform any one or more of the following based on the obtained multicast-related information: the method includes switching to BWP (e.g., switching to BWP corresponding to multicast), activating BWP corresponding to multicast, further receiving data corresponding to multicast, and determining to communicate with the network device on BWP corresponding to multicast. Optionally, the design may be applied to multicast (e.g., each multicast, or multicast corresponding to each G-RNTI, or multicast corresponding to G-RNTI, or all multicast)/G-RNTI (e.g., G-RNTI included in the first DCI) corresponding to one BWP.

In yet another possible design, the first information may include/be the second identification information and the BWP field.

The first information being the second identification information and the BWP field may be understood as: the second identification information and the BWP field are used to indicate the first transmission mode.

For example, for the first possible case, the terminal receives a first DCI scrambled by a C-RNTI or a CS-RNTI, the first DCI including a G-RNTI (i.e., the second identification information is the G-RNTI) and a BWP field. The terminal may obtain the multicast-related information, specifically, the terminal determines the multicast associated with the G-RNTI according to the second identifier information, and determines the BWP corresponding to the multicast associated with the G-RNTI according to the BWP field (e.g., the multicast/G-RNTI corresponding to the G-RNTI corresponds to BWP1, BWP2, BWP3, and the BWP field indicates BWP 1). Optionally, the terminal may perform any one or more of the following based on the obtained multicast-related information: the method includes switching to BWP (e.g., switching to BWP corresponding to multicast), activating BWP corresponding to multicast, further receiving data corresponding to multicast, and determining to communicate with the network device on BWP corresponding to multicast. Optionally, the design may be applicable to multicast (e.g., per multicast, or multicast corresponding to each G-RNTI, or multicast corresponding to G-RNTI, or all multicast)/G-RNTI (e.g., G-RNTI included in the first DCI) corresponding to a group of BWPs (e.g., one or more BWPs).

In yet another possible design, the first information may include/be a preset field and a BWP field.

The first information is a preset field and the BWP field may be understood as: the preset field and the BWP field are used to indicate the first transmission mode.

For example, for the first possible case, the terminal receives a first DCI scrambled by a C-RNTI or a CS-RNTI, the first DCI including a preset field and a BWP field, the preset field indicating multicasting. The terminal may obtain multicast-related information, specifically, the terminal determines a multicast according to a preset field, and determines a BWP corresponding to the multicast according to a BWP field (for example, the multicast corresponds to BWP1, BWP2, BWP3, and the BWP field indicates BWP 1). Optionally, the terminal may perform any one or more of the following based on the obtained multicast-related information: the method includes switching to BWP (e.g., switching to BWP corresponding to multicast), activating BWP corresponding to multicast, further receiving data corresponding to multicast, and determining to communicate with the network device on BWP corresponding to multicast. Alternatively, the design may be applicable to a multicast (e.g., all multicast) for a group of BWPs (e.g., one or more BWPs).

In yet another possible design, the first information may include/be the second identification information and a preset field and a BWP field.

The first information being the second identification information and the preset field and BWP field may be understood as: the second identification information and the preset field and the BWP field are used to indicate the first transmission mode.

For example, for the first possible case, the terminal receives a first DCI scrambled by a C-RNTI or a CS-RNTI, the first DCI including a G-RNTI (i.e., the second identification information is the G-RNTI) and a preset field and a BWP field, the preset field indicating multicast. The terminal may obtain multicast-related information, specifically, the terminal determines a multicast according to a preset field, determines the multicast as a multicast associated with G-RNTI according to the second identifier information, and determines a BWP corresponding to the multicast associated with G-RNTI according to the BWP field (e.g., the multicast/G-RNTI corresponding to the G-RNTI corresponds to BWP1, BWP2, BWP3, and the BWP field indicates BWP 1). Optionally, the terminal may perform any one or more of the following based on the obtained multicast-related information: the method includes switching to BWP (e.g., switching to BWP corresponding to multicast), activating BWP corresponding to multicast, further receiving data corresponding to multicast, and determining to communicate with the network device on BWP corresponding to multicast. Optionally, the design may be applicable to multicast (e.g., per multicast, or multicast corresponding to each G-RNTI, or multicast corresponding to G-RNTI, or all multicast)/G-RNTI (e.g., G-RNTI included in the first DCI) corresponding to a group of BWPs (e.g., one or more BWPs).

It should be noted that, only the first possible case is taken as an example to describe several possible designs, and other cases (for example, the second possible case and the third possible case) are similar, and the related explanations may refer to the above description, and are not repeated herein.

In yet another possible design, the first information includes/is an identification of the terminal in case the second transmission mode is multicast and the first transmission mode is unicast.

Optionally, the identifier of the terminal may include any one or more of the following: the unique identification of the terminal, the identification of the terminal in one cell and the unique identification of the terminal in one cell.

Illustratively, the identification of the terminal may be: unicast RNTI (e.g., C-RNTI or CS-RNTI).

For example, a terminal receives a first DCI scrambled by a G-RNTI associated with a multicast, and the C-RNTI included in the first DCI is the same as the C-RNTI of the terminal. The terminal may determine that the first DCI is for the terminal. Optionally, the terminal may obtain unicast related information (e.g., C-RNTI). The terminal may determine the BWP to which unicast corresponds. Optionally, the terminal may perform any one or more of the following based on the obtained unicast-related information: the method includes switching BWP (e.g., to a unicast corresponding BWP), activating the unicast corresponding BWP, further receiving unicast corresponding data, and determining to communicate with the network device on the unicast corresponding BWP. It can be understood that if other terminals receive the first DCI, the C-RNTI in the first DCI is different from the C-RNTIs of the other terminals, and the other terminals may ignore the first DCI.

It should be noted that the possible designs may be combined with other possible designs in any way, for example, the first information includes/is the identification and the second identification information of the terminal, or the first information includes/is the identification and the preset field of the terminal, or the first information includes/is the identification and the BWP field of the terminal, or the first information includes/is the identification and the second identification information and the preset field of the terminal, or the first information includes/is the identification and the second identification information and the BWP field of the terminal, or the first information includes/is the identification and the preset field and the BWP field of the terminal, or the first information includes/is the identification and the second identification information and the preset field and the BWP field of the terminal. Specific contents can be understood by referring to the above contents, and are not described in detail herein.

Optionally, the first DCI may further include an identifier of the terminal.

For example, when the second transmission mode is multicast and the first transmission mode is unicast, the terminal receives a first DCI scrambled by a G-RNTI, the G-RNTI is associated with multicast, and the C-RNTI included in the first DCI is the same as the C-RNTI of the terminal. The terminal may determine that the first DCI is for the terminal. It can be understood that if other terminals receive the first DCI, the C-RNTI in the first DCI is different from the C-RNTIs of the other terminals, and the other terminals may ignore the first DCI.

Optionally, the first DCI may further include third indication information, where the third indication information may be used to indicate the target first bandwidth part and/or the first bandwidth part.

The first DCI may be for indicating a target first bandwidth portion and/or for scheduling data for transmission on the target first bandwidth portion.

Optionally, the third indication information may also be used to indicate the target second bandwidth part and/or the second bandwidth part.

Optionally, the third indication information may include/be/is used for indicating the first indication information and the second indication information; or the third indication information may comprise/be indicative of the first indication information.

The first indication information is used to indicate/be the target first bandwidth part and/or the first bandwidth part.

The second indication information is used to indicate/be the target second bandwidth part and/or the second bandwidth part.

Wherein the first bandwidth part is a bandwidth part associated with the first transmission mode. The number of the first bandwidth portions may be one or more. The target first bandwidth portion is a certain bandwidth portion (BWP) of the "first bandwidth portion".

The second bandwidth portion is a bandwidth portion associated with a second transmission mode. The number of the second bandwidth part may be one or more. The target second bandwidth portion is a certain bandwidth portion of the "second bandwidth portion".

It should be noted that, for "the third indication information, the third indication information may be used to indicate the target first bandwidth part and/or the first bandwidth part. Optionally, the third indication information may also be used to indicate a target second bandwidth part and/or a second bandwidth part ", which may be understood as indicating both the target first bandwidth part and/or the first bandwidth part and the target second bandwidth part and/or the second bandwidth part in the same first DCI; it may also be understood that, in the different first DCI, the target first bandwidth part and/or the first bandwidth part may be indicated, and the target second bandwidth part and/or the second bandwidth part may also be indicated, which is not limited in this application.

Illustratively, the first DCI includes the first information and may further include third indication information. The terminal is prevented from receiving the control signaling which is sent by the network equipment and indicates the target first bandwidth part corresponding to the first transmission mode. The terminal is facilitated to determine a transmission situation on BWP corresponding to the first transmission mode. The terminal is facilitated to determine the target first bandwidth portion. Optionally, the terminal may perform any one or more of the following: BWP switching (e.g., to a target first bandwidth portion corresponding to the first transmission mode), activating the target first bandwidth portion corresponding to the first transmission mode, further receiving data corresponding to the multicast, and determining to communicate with the network device over the target first bandwidth portion corresponding to the first transmission mode. The terminal may transmit in the first transmission mode over the target first bandwidth portion, facilitating flexible switching/changing of transmission modes by the terminal. And the network equipment is also prevented from independently sending control signaling indicating the target first bandwidth part corresponding to the first transmission mode to the terminal. Correspondingly, the terminal is also prevented from receiving the control signaling which is sent by the network device independently and indicates the target first bandwidth part corresponding to the first transmission mode. And the control signaling scrambled by the scrambling information corresponding to the first transmission mode retrieved by the terminal is also avoided, thereby being beneficial to the energy conservation of the terminal.

It should be understood that the second indication information and the first indication information may correspond to two independent fields respectively, or may correspond to one field, which is not limited in this application. "the second indication information and the first indication information may correspond to a field" may be understood as that different bits of the field correspond to the second indication information and the first indication information, respectively; it may also be understood as determining whether the field corresponds to the second indication information or the first indication information based on other information (e.g., the first information); it can also be understood that different values of the field correspond to the second indication information and the first indication information, respectively. For example, the first DCI includes first information indicating a first transmission mode, and the first indication information is determined according to a part of bits (bits corresponding to the first indication information) in the field. For example, the first DCI includes first information indicating a first transmission mode, and the field corresponds to the first indication information. For example, the first DCI includes the field, a first part of the field corresponds to the first transmission mode and/or the first indication information, and a second part of the field corresponds to the second transmission mode and/or the second indication information.

For example, the first DCI may contain one field 1, or contain fields 2 and 3. The field 1 indicates first indication information, or second indication information, or both the first indication information and the second indication information. The field 2 indicates first indication information. The field 3 indicates second indication information.

Alternatively, it should be understood that the second bandwidth part and the first bandwidth part may correspond to two independent fields respectively, or may correspond to one field, which is not limited in the present application. For example, the first DCI may contain one field 1, or contain fields 2 and 3. The field 1 indicates/corresponds to the first bandwidth part, or the second bandwidth part, or both the first bandwidth part and the second bandwidth part. Field 2 indicates/corresponds to the first bandwidth portion. Field 3 indicates the second bandwidth part.

For example, in the case where the third indication information includes the first indication information, the first indication information corresponds to an independent field.

For example, in the case where the third indication information includes the first indication information and the second indication information, the second indication information and the first indication information correspond to one field.

It may also be appreciated that the first DCI may not include the second indication information, i.e., the first DCI may be for indicating the target first bandwidth portion and/or for scheduling data for transmission on the target first bandwidth portion.

Optionally, the first indication information may specifically include any one or more of the following items:

(1) index of the target first bandwidth part.

(2) The location and/or bandwidth of the target first bandwidth portion.

(3) Index of the first bandwidth part.

(4) The location and/or bandwidth of the first bandwidth portion. The terminal determines the target first bandwidth portion according to the third indication information.

Alternatively, "determining the target first bandwidth portion" may include: an index of the target first bandwidth part is determined, or a location and/or a bandwidth of the target first bandwidth part is determined.

In a possible design, the third indication information includes C bits or the third indication information is C bits, and the determining, by the terminal, the target first bandwidth part according to the third indication information may specifically be that the terminal determines the target first bandwidth part according to values of part of the C bits.

It is understood that "C bits" is a description of a name, which may also replace/refer to a second field or other name, etc. The number of the C bits can be 0bit or 1bit or a plurality of bits. For example, the third indication information may include/be C bits, where C > ═ 0 or C is a non-negative integer. In one possible case, the number of the first bandwidth parts is 0, or both the number of the first bandwidth parts and the number of the second bandwidth parts are 0, and C may be 0. Alternatively, C ═ 0 may be understood as that the terminal/network device may determine that the third indication information includes/is 0 bits in the case where it is determined that the first bandwidth portion and/or the target first bandwidth portion need not be indicated.

Optionally, it is understood that the C bits are the BWP field. The C bits are used to indicate any one or more of: a first transmission mode, a target first bandwidth portion, a first bandwidth portion.

For example, some of the C bits may be understood as D bits, where D < C.

Alternatively, the design may be applied to a case where the second indication information and the first indication information correspond to one field.

In particular, a portion of the C bits may be used to determine the target first bandwidth portion.

Optionally, another part of the C bits may be used to determine the target second bandwidth part. Or the third indication information includes first indication information and second indication information, and the first indication information and the second indication information may respectively correspond to different bits.

For example, another part of the C bits can be understood as C-D bits, where (C-D) < C.

For example, the third indication information includes/is C bits, a first part of the C bits is used for indicating the first bandwidth part, and a second part of the C bits is used for indicating the second bandwidth part. That is, the first indication information/bit for indicating the first bandwidth part and the second indication information/bit for indicating the second bandwidth part in the first DCI are independently set, so that the terminal can respectively acquire the corresponding bandwidth parts from the corresponding bits, thereby improving flexibility of indicating the bandwidth parts.

The first part of the C bits is part of the C bits.

The second part of the C bits is another part of the C bits.

It should be noted that the first part of the C bits and the second part of the C bits may be all bits of the C bits, or may be part bits of the C bits, and the present application is not limited thereto.

It is to be understood that different values of a first part of the C bits may respectively indicate different first bandwidth portions, and different values of a second part of the C bits may respectively indicate different second bandwidth portions. A value of a first portion of the C bits is used to indicate a target first bandwidth portion. A value of a second portion of the C bits may be used to indicate a target second bandwidth portion. For example, a first part of the C bits is the upper bits of the C bits, and a second part of the C bits is the lower bits of the C bits.

Specifically, the first bandwidth part/first indication information and the second bandwidth part/second indication information occupy/correspond to different bits of the C bits, respectively. For example, a first part of the C bits is lower bits of the C bits, and a second part of the C bits is upper bits of the C bits.

Alternatively, the number of bits occupied by/corresponding to the first bandwidth part/first indication information may be determined according to the number of the first bandwidth parts. For example,

or

Or

y is an integer, for example, y is 0. Wherein m is the number of bits occupied by/corresponding to the first bandwidth part/first indication information, P₁Is the number of the first bandwidth part. For example, the terminal and/or the network device may determine the number of bits occupied by/corresponding to the first bandwidth part/first indication information according to the number of the first bandwidth parts.

The first bandwidth part/first indication information occupies/corresponds to a first part of the bits of the C bits.

Optionally, the number of first bandwidth portions may include any one or more of: a number of first bandwidth parts configured by RRC signaling (e.g., RRC dedicated signaling), a number of first bandwidth parts configured by broadcast/multicast signaling (e.g., system information, or RRC broadcast/multicast information, or MCCH messages), a number of preconfigured first bandwidth parts.

Optionally, the number of first bandwidth parts does not include the initial bandwidth part or the number of initial bandwidth parts. For example, the initial bandwidth portion is: an initial downlink bandwidth part, or an initial first transmission mode bandwidth part, or an initial downlink first transmission mode bandwidth part.

Optionally, the number of bits occupied by/corresponding to the second bandwidth part/the second indication information may be determined according to the number of the second bandwidth part. For example,

or

Or

z is an integer, e.g., 0. Wherein L is the number of bits occupied by/corresponding to the second bandwidth part/the second indication information, P₂Is the number of second bandwidth portions. For example, the terminal and/or the network device may alsoAnd determining the number of bits occupied/corresponding by/of the second bandwidth part/the second indication information according to the number of the second bandwidth part.

The second bandwidth part/second indication information occupies/corresponds to a second part of the C bits.

Optionally, the number of second bandwidth portions may include any one or more of: a number of second bandwidth parts configured by RRC signaling (e.g., RRC dedicated signaling), a number of second bandwidth parts configured by broadcast/multicast signaling (e.g., system information, or RRC broadcast/multicast information, or MCCH messages), a number of preconfigured second bandwidth parts.

Optionally, the number of second bandwidth parts does not include the initial bandwidth part or the number of initial bandwidth parts. For example, the initial bandwidth portion is: an initial downlink bandwidth part, or an initial second transmission mode bandwidth part, or an initial downlink second transmission mode bandwidth part.

In this case, the network device and/or the terminal may determine the number of bits occupied by/corresponding to the first bandwidth part/the first indication information and the number of bits occupied by/corresponding to the second bandwidth part/the second indication information, respectively, and may determine the first indication information and the second indication information, respectively, thereby improving flexibility in indicating the bandwidth parts.

For example, if the number of the first bandwidth part is 3, the number of bits occupied by/corresponding to the first bandwidth part/the first indication information may be 2 bits.

For example, if the number of the second bandwidth part is 4, the number of bits occupied by/corresponding to the second bandwidth part/the second indication information may be 2 bits.

Alternatively, the number of C bits may be determined according to the number of the first bandwidth part and the number of the second bandwidth part.

For example, the number of C bits may be determined according to the number of bits occupied by/corresponding to the first bandwidth part/first indication information and the number of bits occupied by/corresponding to the second bandwidth part/second indication information. For example, the network device and/or the terminal may use the sum of the number of bits occupied by/corresponding to the first bandwidth part/the first indication information and the number of bits occupied by/corresponding to the second bandwidth part/the second indication information as the number q of C bits. For example, q is m + L. For example, the network device and/or the terminal may use the sum + k of the number of bits occupied by/corresponding to the first bandwidth part/the first indication information and the number of bits occupied by/corresponding to the second bandwidth part/the second indication information as the number of C bits. For example, q is m + L + k, k being an integer, e.g., 0.

In this application, it can also be understood that the number of bits can be understood as the number of bits (occupied by) bits. For example, the number of C bits can be understood as the number of bits of the C bits (occupied).

The manner of determining the index of the target bandwidth part is as follows:

in a possible implementation manner, the index of the target first bandwidth part is a value of the first bandwidth part/the occupied/corresponding bit of the first indication information.

Optionally, if the number of the first bandwidth part is smaller than the number of the first bandwidth part/the bandwidth part occupied by the first indication information/the corresponding bit can indicate. For example, if the number of bits occupied by/corresponding to the first bandwidth part/first indication information is m, the first indication information may indicate 2m bandwidth parts, and if the number P of the first bandwidth parts is m₁<2^mThen, the index of the target first bandwidth part may be a value of a bit occupied by/corresponding to the first bandwidth part/the first indication information.

In another possible implementation manner, the index of the target first bandwidth part is + e, which is a value of the first bandwidth part/the occupied/corresponding bit of the first indication information.

Optionally, if the number of the first bandwidth parts is equal to the number of the first bandwidth parts/occupied by the first indication information/corresponding bits capable of indicating the bandwidth parts. For example, if the number of bits occupied by/corresponding to the first bandwidth part/first indication information is m, the first indication information may indicate 2^mA bandwidth part, if firstNumber of bandwidth parts P₁＝2^mThen, the index of the target first bandwidth part may be + e, which is a value of the bit occupied by/corresponding to the first bandwidth part/the first indication information. Where e may be a starting number value or a minimum number of the first bandwidth part, or a minimum value or a starting value of an index of the first bandwidth part, e.g., e ═ 1.

It is understood that the index of BWP may be numbered from 0 or e (e.g., 1). The above-mentioned scheme is described by taking the number from 1 as an example, but the present application does not limit this.

E.g. the number of first bandwidth parts P₁The indices of the first bandwidth part are 1, 2, 3, 4, respectively. The number of bits occupied by/corresponding to the first bandwidth part/first indication information is 2. The index of the first bandwidth is numbered from 1. The index of the first bandwidth part is +1, which is the value of the bit occupied by/corresponding to the first bandwidth part/the first indication information. As shown in table 1. For example, the indexes of the bandwidth portions corresponding to the values "00", "01", "10", and "11" of the bits may be 0+1 to 1, 1+1 to 2, 2+1 to 3, and 3+1 to 4, respectively.

TABLE 1

For example, it can be appreciated that the number of second bandwidth portions P₂The indices of the second bandwidth part are 0, 1, 2, respectively, 3. The number of bits occupied by/corresponding to the second bandwidth part/second indication information is 2. The indices of the second bandwidth are numbered from 0. The index of the second bandwidth part is the value of the bit occupied/corresponding to the second bandwidth part/the second indication information. As shown in table 2. For example, the indexes of the bandwidth parts corresponding to the values "00", "01", and "10" of the bits may be 0, 1, and 2, respectively.

TABLE 2

For example, according to the examples shown in table 1 and table 2, the number of C bits is 2+2 to 4 bits.

In another possible design, the third indication information includes/is C bits, and the determining, by the terminal, the target first bandwidth portion according to the third indication information may specifically be that the terminal determines the target first bandwidth portion according to values of all bits of the C bits.

It is understood that all or all of the C bits are C bits. All or all of the C bits may be understood/replaced with C bits. For example, the first part of all bits can be understood/replaced by the first part of C bits. Optionally, the possible design may be applied to a case where the second indication information and the first indication information correspond to one field, or may be applied to a case where the first indication information corresponds to an independent field.

Specifically, the terminal may determine the first bandwidth part from all bits of the C bits.

In one possible implementation, a first portion of the total bits may be taken to indicate the first bandwidth portion and/or a second portion of the total bits may be taken to indicate the second bandwidth portion.

Optionally, the first part of the values of all the bits may also be used to indicate the first transmission mode.

Optionally, the second part of the values of all the bits may also be used to indicate the second transmission mode.

It should be noted that the first part of the total bits and the second part of the total bits may be all of the total bits or part of the total bits, and the present application is not limited thereto.

Thus, the indication information for indicating the first bandwidth part and the indication information for indicating the second bandwidth part in the first DCI can be uniformly set, thereby saving bit occupation. A value of all bits of the C bits in the indication information may be used to indicate the target first bandwidth part (i.e., a certain first bandwidth part of the one or more first bandwidth parts).

Alternatively, the terminal may determine the number of C bits according to the number of the first bandwidth part and the number of the second bandwidth part.

For example, the first part of all bits includes: the value of the C bits is less than or equal to a first threshold value. The second part of all the bits takes values including: the value of the C bits is greater than a first threshold.

Optionally, in this application, the first threshold may be any one or more of the following, or the first threshold may be determined according to any one or more of the following: a network device configured value, or a preconfigured value, or a protocol defined value, or a number of first bandwidth parts-1, or a number of first bandwidth parts.

For example, the first part of all bits includes: the value of the C bits is greater than a second threshold. The second part of all the bits takes values including: the value of the C bits is less than or equal to a second threshold value.

Optionally, in this application, the second threshold may be any one or more of the following, or the second threshold may be determined according to any one or more of the following: a network device configured value, or a preconfigured value, or a protocol defined value, or a number of second bandwidth parts of-1, or a number of second bandwidth parts, or H.

Wherein H is q₂Maximum value, q, of the value that can be taken by a bit₂Is the number of bits determined according to the number of second bandwidth parts.

For example,

for example,

or

z is an integer, e.g.，0。

P₂Is the number of second bandwidth portions.

For example,

for example,

or

z is an integer, e.g., 0.

In one possible implementation, the first part value of the total bits may be used to indicate the first bandwidth part.

It should be noted that the first partial value of the all bits may be the all value of the all bits, or may be a partial value of the all bits, and the present application is not limited thereto.

The way to determine the number of bits of C bits is as follows:

in one possible implementation, the number of C bits is determined according to a sum of the number of the first bandwidth part and the number of the second bandwidth part.

For example, the network device and/or the terminal determines the number q of C bits according to the sum P of the number of the first bandwidth part and the number of the second bandwidth part, where P is P₁+P₂，P₁Is the number of first bandwidth parts, P₂Is the number of second bandwidth portions.

For example,

for example,

or

x is an integer, e.g., 0.

Optionally, q may be the number of bits occupied/corresponding by the third indication information (i.e., the first indication information and the second indication information, or the first bandwidth part and the second bandwidth part).

Compared with the implementation mode that the number of the bits is determined based on the number of the first bandwidth part and the number of the second bandwidth part, the implementation mode can reduce the number of the bits occupied/corresponding to the C bits/the third indication information and reduce the overhead of transmission control signaling.

In another possible implementation manner, the number of C bits is determined according to a sum of a number of first bits and a number of second bits, the number of first bits is determined according to the number of the first bandwidth part, and the number of second bits is determined according to the number of the second bandwidth part.

Illustratively, the network device and/or the terminal may be based on the number P of the first bandwidth part₁Determining the number q of first bits₁. For example,

for example,

or

y is an integer, for example, y is 0. Optionally, the number of the first bits may be the number of bits occupied by/corresponding to the first bandwidth part/the first indication information.

Illustratively, the network device and/or the terminal may be based on the number P of the second bandwidth part₂Determining the number q of second bits₂. For example,

for example,

or

z is an integer, e.g., 0. Optionally, the number of the second bits may be the number of bits occupied by/corresponding to the second bandwidth part/the second indication information.

For example, the network device and/or the terminal may determine the sum of the number of the first bits and the number of the second bits as the number q of the C bits. For example, q ═ q₁+q₂. For example, the network device and/or the terminal may use the sum of the number of the first bits and the number of the second bits + k as the number of the C bits. For example, q ═ q₁+q₂+ k, k is an integer, e.g., 0.

It is to be understood that the total number of bandwidth portions that the C bits may be used to indicate/the total number of values of the C bits may be greater than or equal to the sum of the number of the first bandwidth portions and the number of the second bandwidth portions. The value of the C bits used for indicating the first bandwidth part and the value of the C bits used for indicating the second bandwidth part may be continuous or discontinuous/intermittent, which is not limited in this application.

For example, if the number of the first bandwidth part is 1 and the number of the second bandwidth part is 1, the number of the first bits is 1 and the number of the second bits is 1. Thus, the 2bit can be used to indicate 4 bandwidth portions or there are 4 possibilities for the 2bit value, in which case only 1 first bandwidth portion and 1 second bandwidth portion need to be indicated by two of the values, respectively. For example, 00 may be used to indicate a first bandwidth portion and 10 may be used to indicate a second bandwidth portion (in which case the value of the bits may be understood to be discontinuous/spaced). For example, 00 may be used to indicate a first bandwidth portion and 01 may be used to indicate a second bandwidth portion (in which case the bits are understood to be consecutive in value).

The manner of determining the index of the target bandwidth part is as follows:

in a possible implementation manner, the index of the target first bandwidth part is a value of the C bits.

For example, in a case where the first indication information and the second indication information are indicated by C bits, the first indication information may be represented by a smaller value of the C bits, and the second indication information may be represented by a larger value of the C bits. For example, the terminal may take a smaller value of C bits as an index of the target first bandwidth part.

For example, if the terminal receives that the value of C bits is less than or equal to the first threshold, the value of the C bits is used as the index of the target first bandwidth part.

For another example, if the number of the C bits is 2 bits, and if the number of the first bandwidth part is 1, 0 may be used as the index of the target first bandwidth part when the value of the C bits is 0.

For example, in the case that the first indication information is indicated by C bits, the first indication information may be represented by values of the C bits. For example, the terminal may take the value of C bits as an index of the target first bandwidth part.

It is also understood that the number of first bandwidth portions may be equal to or less than J. J is q₁The maximum value of the value that can be taken by a bit is + 1. q. q.s₁According to the number P of the first bandwidth part₁The determined number of bits. For example,

for example,

or

y is an integer, for example, y is 0.

In another possible implementation manner, the index of the target first bandwidth part is a value + b of the C bits.

Optionally, b is an integer, or a positive integer, or a non-negative integer.

Alternatively, b may be understood as a starting number value or a minimum number of the first bandwidth part, or a minimum value or a starting value of an index of the first bandwidth part.

For example, if the number of the first bandwidth parts is equal to J, the index of the target first bandwidth part is the value + b of the C bits when the first bandwidth parts are numbered from b.

J is the maximum value +1 of q1 bits. q1 is the number P according to the first bandwidth part₁The determined number of bits. For example,

for example,

or

y is an integer, for example, y is 0.

For example, if b is 1, i.e. the first bandwidth part is numbered from 1, the index of the target first bandwidth part is +1 of the C bits.

For example, if the terminal receives that the value of C bits is less than or equal to the first threshold, the value + b of the C bits is used as the index of the target first bandwidth part.

In yet another possible implementation manner, the index of the target first bandwidth part is a difference between a value of the C bits and a number of the second bandwidth parts.

For example, in a case where the first indication information and the second indication information are indicated by C bits, the first indication information may be represented by a larger value of the C bits, and the second indication information may be represented by a smaller value of the C bits. For example, the terminal may use a difference between a larger value of the C bits and the number of the second bandwidth parts as an index of the target first bandwidth part.

For example, if the terminal receives that the value of C bits is greater than the second threshold, the value of the C bits minus the number of the second bandwidth parts is used as the index of the target first bandwidth part.

It can be understood that, when the terminal receives that the value of the C bits is less than or equal to the second threshold, the value of the C bits or the value of the C bits + t is used as the index of the target second bandwidth part. For example, if t is 1, i.e. the second bandwidth part is numbered from 1, the index of the target second bandwidth part is +1 of the C bits.

For example, the number of the first bandwidth parts is 2, and the indexes of the first bandwidth parts are 0 and 1. The number of the second bandwidth parts is 2, and the indexes of the second bandwidth parts are 0 and 1. The number of C bits is 2 bits (e.g., based on

Or according to

Certain), C bits can take 4 values of 0, 1, 2, and 3, as shown in table 3. A value of 0, 1 for C bits (e.g., a value of less than or equal to (a number of second bandwidth portions-1)) may be used to indicate the second bandwidth portion. A value of 2, 3 for C bits (e.g., a value of C bits is greater than (the number of second bandwidth portions-1)) may be used to indicate the first bandwidth portion. In this way, when the terminal receives the first DCI and the value of the C bits is 2, the value corresponds to the first bandwidth part, and the index of the first bandwidth part is 0(2-2 is 0). When the value of C bits is 3, the value corresponds to the first bandwidth part, and the index of the first bandwidth part is 1(3-2 is 1). And under the condition that the value of the C bits is 0, the value corresponds to the second bandwidth part, and the index of the second bandwidth part is 0. And under the condition that the value of the C bits is 1, the value corresponds to the second bandwidth part, and the index of the second bandwidth part is 1.

TABLE 3

In another possible implementation, the index of the target first bandwidth part is a difference + a between a value of the C bits and a number of second bandwidth parts, the second bandwidth parts being associated with a second transmission mode.

Optionally, a is an integer, or a positive integer, or a non-negative integer.

Alternatively, a may be understood as a starting number value or a minimum number of the first bandwidth part, or a minimum value or a starting value of an index of the first bandwidth part.

For example, if the number of the first bandwidth parts is equal to J, in the case that the first bandwidth parts are numbered from a, the index of the target first bandwidth part is the difference + a between the value of the C bits and the number of the second bandwidth parts.

J is q₁The maximum value of the value that can be taken by a bit is + 1. q. q.s₁According to the number P of the first bandwidth part₁The determined number of bits. For example,

for example,

or

y is an integer, for example, y is 0.

For example, if a is 1, that is, the first bandwidth part is numbered from 1, the index of the target first bandwidth part is +1, which is the difference between the value of the C bits and the number of the second bandwidth parts.

For example, if the terminal receives that the value of C bits is greater than the second threshold, the value of the C bits minus the number of the second bandwidth parts + a is used as the index of the target first bandwidth part.

For example, the number of the first bandwidth parts is 2, and the indexes of the first bandwidth parts are 1, 2. The number of the second bandwidth parts is 2, and the indexes of the second bandwidth parts are 0 and 1. The number of C bits is 2 bits (e.g., based on

Or according to

Certain), C bits can take 4 values of 0, 1, 2, and 3, as shown in table 4. A value of 0, 1 for C bits may be used to indicate the second bandwidth part (e.g., a value of less than or equal to (number of second bandwidth part-1)). A value of 2, 3 for C bits may be used to indicate the first bandwidth part (e.g., the value of C bits is greater than (number of second bandwidth parts-1)). In this way, when the terminal receives the first DCI and the value of the C bits is 2, the value corresponds to the first bandwidth part, and the index of the first bandwidth part is 1(2-2+1 is 1). When the value of C bits is 3, the value corresponds to the first bandwidth part, and the index of the first bandwidth part is 2(3-2+1 is 2). And under the condition that the value of the C bits is 0, the value corresponds to the second bandwidth part, and the index of the second bandwidth part is 0. And under the condition that the value of the C bits is 1, the value corresponds to the second bandwidth part, and the index of the second bandwidth part is 1.

TABLE 4

In yet another possible implementation manner, the index of the target first bandwidth part is a difference between a value of the C bits and R. R is q₂Maximum value or q of value that can be taken by a bit₂Maximum value + c, q of each bit₂According to the second bandwidthThe number of portions determines the number of bits. Where c is an integer, for example, c ═ 1.

For example,

for example,

or

z is an integer, e.g., 0.

P₂Is the number of second bandwidth portions.

For example,

for example,

or

z is an integer, e.g., 0.

For example,

for example,

or

z is an integer, e.g., 0.

For example, in a case where the first indication information and the second indication information are indicated by C bits, the first indication information may be represented by a larger value of the C bits, and the second indication information may be represented by a smaller value of the C bits. For example, the terminal may use the difference between the larger value of C bits and R as the index of the target first bandwidth part.

For example, if the terminal receives that the value of C bits is greater than H, the value of the C bits is subtracted by R to serve as the index of the target first bandwidth part.

It can be understood that, when the terminal receives that the value of the C bits is less than or equal to R, the value of the C bits or the value + t of the C bits is used as the index of the target second bandwidth part. For example, if t is 1, i.e. the second bandwidth part is numbered from 1, the index of the target second bandwidth part is +1 of the C bits.

For example, the number of the first bandwidth parts is 2, and the indexes of the first bandwidth parts are 0 and 1. The number of the second bandwidth parts is 3, and the indexes of the second bandwidth parts are 0, 1 and 2. The number of C bits is 3 bits (e.g., based on

Or according to

Determined), C bits can take 8 values of 0, 1, 2, 3, 4, 5, 6, and 7, as shown in table 5. The number of bits determined according to the number of the second bandwidth part is 2 (e.g., according to

) The maximum value that can be taken by 2 bits is 3 (for example, R ═ 3+1 ═ 4). A value of 4, 5 for C bits may be used to indicate the first bandwidth portion (e.g., the value of C bits is greater than H, H ═ 3). Values of 0, 1, and 2 for C bits may be used to indicate the second bandwidth portion (e.g., values of H or less for C bits, H ═ 3). In this way, when the value of C bits of the first DCI received by the terminal is 4, the value corresponds to the first bandwidth part, and the index of the first bandwidth part is 0(4-4 is 0). When the value of C bits is 5, the value corresponds to the first bandwidth part, and the index of the first bandwidth part is 1(5-4 is 1). And under the condition that the value of the C bits is 0, the value corresponds to the second bandwidth part, and the index of the second bandwidth part is 0. Under the condition that the value of C bits is 1, the value corresponds to the second bitA second bandwidth part, the index of the second bandwidth part being 1. When the value of the C bits is 2, the value corresponds to the second bandwidth part, and the index of the second bandwidth part is 2.

TABLE 5

In yet another possible implementation manner, the index of the target first bandwidth part is a difference + a between the value of the C bits and R. R is q₂Maximum value or q of value that can be taken by a bit₂Maximum value + + c, q of each bit₂Is the number of bits determined according to the number of second bandwidth parts. Where c is an integer, for example, c ═ 1.

For example,

for example,

or

z is an integer, e.g., 0.

P₂Is the number of second bandwidth portions.

For example,

for example,

or

z is an integer, e.g., 0.

For example,

for example,

or

z is an integer, e.g., 0.

Optionally, a is an integer, or a positive integer, or a non-negative integer.

For example, if a is 1, i.e. the first bandwidth part is numbered from 1, the index of the target first bandwidth part is +1 of the C bits.

For example, in a case where the first indication information and the second indication information are indicated by C bits, the first indication information may be represented by a larger value of the C bits, and the second indication information may be represented by a smaller value of the C bits. For example, the terminal may use the difference + a between the larger value of C bits and R as the index of the target first bandwidth part.

For example, if the terminal receives that the value of C bits is greater than H, the value of the C bits is subtracted by R + a to serve as the index of the target first bandwidth part.

It can be understood that, when the terminal receives that the value of the C bits is equal to or less than H, the value of the C bits or the value + t of the C bits is used as the index of the target second bandwidth part. For example, if t is 1, i.e. the second bandwidth part is numbered from 1, the index of the target second bandwidth part is +1 of the C bits.

For example, the number of the first bandwidth parts is 2, and the indexes of the first bandwidth parts are 1, 2. The number of the second bandwidth parts is 3, and the indexes of the second bandwidth parts are 0, 1 and 2. The number of C bits is 3 bits (e.g., based on

Or according to

Determined), C bits can take 8 values of 0, 1, 2, 3, 4, 5, 6, and 7, as shown in table 6. The number of bits determined according to the number of the second bandwidth part is 2 (e.g., according to

) The maximum value that can be taken by 2 bits is 3 (for example, R ═ 3+1 ═ 4). A value of 4, 5 for C bits may be used to indicate the first bandwidth portion (e.g., the value of C bits is greater than H, H ═ 3). Values of 0, 1, and 2 for C bits may be used to indicate the second bandwidth portion (e.g., values of H or less for C bits, H ═ 3). In this way, when the value of C bits of the first DCI received by the terminal is 4, the value corresponds to the first bandwidth part, and the index of the first bandwidth part is 1(4-4+1 is 1). If the value of C bits is 5, the value corresponds to the first bandwidth part, and the index of the first bandwidth part is 2(5-4+1 is 2). And under the condition that the value of the C bits is 0, the value corresponds to the second bandwidth part, and the index of the second bandwidth part is 0. And under the condition that the value of the C bits is 1, the value corresponds to the second bandwidth part, and the index of the second bandwidth part is 1. When the value of the C bits is 2, the value corresponds to the second bandwidth part, and the index of the second bandwidth part is 2.

TABLE 6

Optionally, it is understood that, before step 201, the terminal acquires the first bandwidth part information (e.g., the position and/or bandwidth of the first bandwidth part, the index of the first bandwidth part, the number of the first bandwidth parts). For example, the terminal may acquire the first bandwidth part information by pre-configuration or according to a specification. For example, the terminal may further receive a third message sent by the network device, the third message indicating the first bandwidth part information. Optionally, before step 201, the terminal acquires second bandwidth part information (e.g., a location and/or a bandwidth of the second bandwidth part, an index of the second bandwidth part, and a number of the second bandwidth part). For example, the terminal may acquire the second bandwidth part information by pre-configuration or according to a specification. For example, the terminal may further receive a fourth message sent by the network device, where the fourth message is used to indicate the second bandwidth part information.

It is also understood that the third message may be a different signaling from the fourth message, or may be the same signaling, which is not limited in this application.

Step 202 is optional.

It can also be understood that, the communication between the terminal and the network device in the second transmission mode and/or in the first transmission mode may specifically be data transmission, and may also be signaling interaction, which is not limited in this application.

For example, the bandwidth portion corresponding to the first transmission mode may be a target first BWP corresponding to the first transmission mode.

Optionally, the terminal determining to communicate with the network device over the bandwidth portion corresponding to the first transmission mode may include any one or more of:

(1) the terminal activates the bandwidth part corresponding to the first transmission mode.

(2) The terminal switches to the bandwidth portion corresponding to the first transmission mode.

(3) The terminal deactivates a portion of the bandwidth corresponding to the second transmission mode.

(4) And the terminal receives the data scheduled by the first DCI on the bandwidth part corresponding to the first transmission mode.

For example, the terminal receives a first DCI from which it may determine to communicate with the network device over a bandwidth portion corresponding to the first transmission mode. For example, the terminal may transmit data to the network device or receive data over the bandwidth portion corresponding to the first transmission mode.

For example, the bandwidth portion corresponding to the second transmission mode may be a target second BWP corresponding to the second transmission mode.

Optionally, the terminal determining to communicate with the network device over the bandwidth portion corresponding to the second transmission mode may include any one or more of:

(1) the terminal activates the bandwidth part corresponding to the second transmission mode.

(2) The terminal switches to the bandwidth portion corresponding to the second transmission mode.

(3) And the terminal receives the data scheduled by the first DCI on the bandwidth part corresponding to the second transmission mode.

For example, the terminal may also determine to communicate with the network device over the bandwidth portion corresponding to the second transmission mode according to the first DCI. For example, the terminal may transmit data to the network device or receive data over the bandwidth portion corresponding to the second transmission mode.

It should be noted that, in the present application, the first DCI may include the third indication information, and does not include the first information. That is, the information is optional.

With this embodiment, the terminal receives the first DCI from the network device, where scrambling information (or the first DCI) of the first DCI corresponds to the second transmission mode, or the terminal receives the first DCI on the BWP corresponding to the second transmission mode; the first DCI includes first information indicating a first transmission mode and/or third indication information indicating a target first bandwidth part and/or a first bandwidth part. The method and the device avoid that the terminal cannot receive the control signaling which is sent by the network equipment and indicates the first transmission mode and/or the target first bandwidth part corresponding to the first transmission mode, and also avoid that the terminal cannot know the transmission condition of the first transmission mode and/or the target first bandwidth part corresponding to the first transmission mode and misses data reception or increases data reception delay, thereby being beneficial to reducing transmission delay. The terminal is facilitated to determine a transmission situation on BWP corresponding to the first transmission mode. The terminal is facilitated to determine a first transmission mode and/or a target first bandwidth portion. Optionally, the terminal may perform any one or more of the following: BWP switching (e.g., switching to a target first bandwidth portion corresponding to the first transmission mode), activating the target first bandwidth portion corresponding to the first transmission mode, further receiving data corresponding to the first transmission mode (e.g., data scheduled by the first control signaling), determining to communicate with the network device over the target first bandwidth portion corresponding to the first transmission mode. And the network equipment is also prevented from independently sending control signaling indicating the target first bandwidth part corresponding to the first transmission mode to the terminal. Thereby contributing to an improvement in communication efficiency. Correspondingly, the terminal is also prevented from receiving the control signaling which is sent by the network device independently and indicates the target first bandwidth part corresponding to the first transmission mode. And the control signaling that the terminal searches the scrambling information corresponding to the first transmission mode for scrambling all the time is avoided, and the energy conservation of the terminal is facilitated. The terminal is prevented from always working on a plurality of BWPs to receive control signaling corresponding to different transmission modes, and the terminal is favorable for saving energy. The terminal may communicate using the first transmission mode over the target first bandwidth portion, facilitating flexible switching/changing of transmission modes by the terminal. The first device can flexibly select a proper transmission mode from the first transmission mode or the second transmission mode for communication. In addition, the first device can flexibly adopt the first transmission mode for communication and/or adopt the second transmission mode for communication, and the flexibility of communication is improved. The terminal is prevented from receiving the control signaling which is sent by the network equipment and indicates the first transmission mode and/or the target first bandwidth part corresponding to the first transmission mode, and the terminal is also prevented from missing data reception due to the fact that the terminal cannot know the transmission condition of the first transmission mode and/or the target first bandwidth part corresponding to the first transmission mode, so that the reliability of data transmission is improved.

In another embodiment of the present application for transmitting control signaling, the first control signaling may be first Sidelink Control Information (SCI). The first device is a first terminal, and the second device is a second terminal. It should be noted that, in the case that there is no logical contradiction, this embodiment may be combined with any one of the solutions in the embodiment shown in fig. 2, and for avoiding redundancy, repetition is not performed here.

Alternatively, the first SCI may be a first-level SCI. The first level SCI is used to schedule the second level SCI and/or the psch/data. The second SCI may be used to decode the psch/data.

For the other possible implementation, it is sufficient to replace the terminal with the first terminal, the network device with the second terminal, and the first DCI with the first SCI in one possible implementation for understanding, and details are not described here again.

In addition to the above two possible implementations, the present application may also include other possible implementations, and only needs to replace the terminal with the first device, replace the network device with the second device, and replace the first DCI with the first control signaling in one possible implementation for understanding, which is not described herein again.

Optionally, the first control signaling may be used for any one or more of:

(1) scheduling data;

for example, the data includes any one or more of: downlink data, uplink data, and SL data.

(2) Scheduling any one or more of: PDSCH, PUSCH, PSSCH, second control signaling.

For example, the second control signaling is a second level SCI.

(3) Indicating BWP information.

For example, the first control signaling contains a BWP indication.

Optionally, in this application, the first control signaling may be understood as first control information.

Fig. 3 shows a schematic flow chart of a method of transmitting control signaling according to another embodiment of the present application.

301, the first device receives first control signaling over the second bandwidth portion, the first control signaling for scheduling data for transmission over the first bandwidth portion or for scheduling resources over the first bandwidth portion. The first transmission mode corresponding to the first bandwidth part is different from the second transmission mode corresponding to the second bandwidth part.

302 with which the first device communicates on the bandwidth portion corresponding to the first transmission mode and/or with which the second device communicates on the bandwidth portion corresponding to the second transmission mode.

To more clearly illustrate the embodiment shown in fig. 3, the embodiment is described by taking the first control signaling as the first DCI, the first device as the terminal, and the second device as the network device.

The content of "the terminal communicates with the network device at the bandwidth portion corresponding to the first transmission mode" may refer to the content of "the terminal determines to communicate with the network device at the bandwidth portion corresponding to the first transmission mode" in the example shown in fig. 2, and is not described herein again. The content of "the terminal communicates with the network device at the bandwidth portion corresponding to the second transmission mode" may refer to the content of "the terminal determines to communicate with the network device at the bandwidth portion corresponding to the second transmission mode" in the example shown in fig. 2, and is not described herein again.

In the prior art, a terminal may receive, on a second bandwidth portion, a first DCI for scheduling data transmitted on the second bandwidth portion or for scheduling resources on the second bandwidth portion. In this embodiment, the first DCI may be further used to schedule data transmitted on the first bandwidth portion or to schedule resources on the first bandwidth portion, which helps the terminal to obtain a first DCI corresponding to data transmitted on the first bandwidth portion from the second bandwidth portion by receiving the DCI scheduling data transmitted on the first bandwidth portion or scheduling resources on the first bandwidth portion on the second bandwidth portion, help the terminal to determine a transmission condition of the first transmission mode and/or a target first bandwidth portion corresponding to the first transmission mode, and further the terminal may receive the data scheduled by the first DCI on the first bandwidth portion. It is helpful to improve the communication efficiency. The terminal is prevented from being switched to other bandwidth parts to acquire the first DCI corresponding to the data transmitted by the other bandwidth parts, so that the data transmission efficiency is improved, the transmission delay is reduced, and the terminal is also beneficial to energy conservation. The terminal is prevented from always working on a plurality of BWPs to receive control signaling corresponding to different transmission modes, and the terminal is favorable for saving energy.

Optionally, the first transmission mode is unicast, and the second transmission mode is multicast. For example, the second BWP is a multicast BWP. The scrambling information of the first DCI is a unicast RNTI. For example, the first device receives first control signaling over the second bandwidth portion, the first control signaling for scheduling data for transmission over the first bandwidth portion or for scheduling resources over the first bandwidth portion, the first bandwidth portion corresponding to a transmission mode that is unicast, and the second bandwidth portion corresponding to a transmission mode that is multicast. Such that the first device may communicate with the second device over a bandwidth portion corresponding to unicast. For example, the first BWP is a unicast BWP or an initial BWP.

Optionally, the first transmission mode is a first multicast, and the second transmission mode is a second multicast. For example, the second BWP is a BWP corresponding to the second multicast. The scrambling information of the first DCI is RNTI corresponding to the first multicast. For example, the first device receives first control signaling on the second bandwidth portion, the first control signaling being used for scheduling data transmitted on the first bandwidth portion or for scheduling resources on the first bandwidth portion, the first bandwidth portion corresponding to a transmission mode being a first multicast, the second bandwidth portion corresponding to a transmission mode being a second multicast. Such that the first device can communicate with the second device over the bandwidth portion corresponding to the first multicast. For example, the first BWP is a BWP corresponding to the first multicast.

Optionally, the first transmission mode is multicast, and the second transmission mode is unicast. For example, the second BWP is a unicast BWP or an initial BWP. The scrambling information of the first DCI is multicast RNTI. For example, the first device receives first control signaling over the second bandwidth portion, the first control signaling being used to schedule data for transmission over the first bandwidth portion or to schedule resources on the first bandwidth portion, the first bandwidth portion corresponding to a transmission mode being multicast, the second bandwidth portion corresponding to a transmission mode being unicast. Such that the first device can communicate with the second device over the corresponding bandwidth portion of the multicast. For example, the first BWP is a multicast BWP.

Optionally, the first transmission mode is multicast, and the second transmission mode is transmission corresponding to the first RNTI. For example, the second BWP is an initial BWP. The scrambling information of the first DCI is multicast RNTI. For example, the first device receives first control signaling over the second bandwidth portion, the first control signaling being used to schedule data for transmission over the first bandwidth portion or to schedule resources on the first bandwidth portion, the first bandwidth portion corresponding to a transmission mode being multicast, the second bandwidth portion corresponding to a transmission mode being unicast. Such that the first device can communicate with the second device over the corresponding bandwidth portion of the multicast. For example, the first BWP is a multicast BWP.

The description of the embodiment shown in fig. 3 may refer to the embodiment shown in fig. 2, and will not be repeated here.

Optionally, before step 301, the terminal acquires the first bandwidth part information (e.g., the position and/or bandwidth of the first bandwidth part, the index of the first bandwidth part, the number of the first bandwidth parts). The content related to the information of the first bandwidth part can refer to the embodiment described in fig. 2, and is not described herein again.

Optionally, before step 301, the terminal acquires information of the second bandwidth part (e.g., a location and/or a bandwidth of the second bandwidth part, an index of the second bandwidth part, and a number of the second bandwidth part). The content related to the second bandwidth part information may refer to the embodiment described in fig. 2, and is not described herein again.

It can be understood that the first transmission mode, the second transmission mode, and the first control signaling may be similar to those described in the embodiment shown in fig. 2, and are not repeated herein to avoid repetition.

Fig. 4 shows a schematic flow chart of a method of message transmission of an embodiment of the present application.

It should be noted that the same terms in the embodiment shown in fig. 4 and the embodiment shown in fig. 2 have the same meanings, and are not repeated herein to avoid repetition.

It should also be noted that the embodiment shown in fig. 4 may be combined with any of the schemes shown in fig. 2 in the absence of a logical contradiction.

401, the terminal sends a second message to the network device.

402, the network device sends acknowledgement information to the terminal.

403, the terminal may apply/determine a correspondence between the second identifier and the index of the second identifier according to the second information in the second message, or the terminal may apply a correspondence between the second identifier indicated by the second information in the second message and the index of the second identifier.

Wherein step 403 is optional.

It should be understood that the embodiment shown in fig. 4 may also include other possible implementations, which only need to replace the terminal with the first device and replace the network device with the second device for understanding, and details are not described herein.

The various embodiments described herein may be implemented as stand-alone solutions or combined in accordance with inherent logic and are intended to fall within the scope of the present application.

It is to be understood that, in the above-described method embodiments, the method and operations implemented by each device may also be implemented by a component (e.g., a chip or a circuit) of the corresponding device.

The above description mainly introduces the scheme provided by the embodiments of the present application from various interaction perspectives. It is understood that each network element, for example, the transmitting end device or the receiving end device, includes a corresponding hardware structure and/or software module for performing each function in order to implement the above functions. Those of skill in the art would appreciate that the various illustrative components and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In the embodiment of the present application, the functional modules may be divided according to the above method example for the transmitting end device or the receiving end device, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a form of hardware or a form of a software functional module. It should be noted that, in the embodiment of the present application, the division of the module is schematic, and is only one logic function division, and there may be another division manner in actual implementation. The following description will be given by taking an example in which each functional module is divided by using a corresponding function.

It should be understood that the specific examples in the embodiments of the present application are for the purpose of promoting a better understanding of the embodiments of the present application and are not intended to limit the scope of the embodiments of the present application.

It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

The method provided by the embodiment of the present application is described in detail above with reference to fig. 2 to 4. Hereinafter, the apparatus provided in the embodiment of the present application will be described in detail with reference to fig. 5 to 8. It should be understood that the description of the apparatus embodiments corresponds to the description of the method embodiments, and therefore, for brevity, details are not repeated here, since the details that are not described in detail may be referred to the above method embodiments.

Fig. 5 shows a schematic block diagram of an apparatus 500 for transmitting control signaling according to an embodiment of the present application.

It is to be understood that the apparatus 500 may correspond to the terminal in the embodiment shown in fig. 2, and may have any function of the terminal in the method. The apparatus 500 includes a transceiver module 510. Optionally, the apparatus 500 further comprises a processing module 520.

The transceiver module 510 is configured to receive a control signaling from a second device, where the control signaling includes first information, the first information is used to indicate a first transmission mode, and scrambling information of the control signaling corresponds to a second transmission mode.

Optionally, the processing module 520 is configured to determine to communicate with the second device over the bandwidth portion corresponding to the first transmission mode and/or to communicate with the second device over the bandwidth portion corresponding to the second transmission mode according to the control signaling.

Optionally, the first information includes second identification information and/or a preset field, the second identification information is used for scheduling transmission corresponding to the first transmission mode, and the preset field is associated with the first transmission mode.

Optionally, the first information comprises a bandwidth part BWP field, the BWP field indicating the first transmission mode.

Optionally, the control signaling further includes indication information, where the indication information is used to indicate a target first bandwidth portion corresponding to the first transmission mode.

Optionally, the indication information includes C bits, and the method further includes:

determining the target first bandwidth part according to the values of part of the C bits; or

And determining the target first bandwidth part according to the values of the C bits.

Optionally, the index of the target first bandwidth part is a difference of a value of the C bits and a number of second bandwidth parts, the second bandwidth parts being associated with a second transmission mode; or

The index of the target first bandwidth part is the value of the C bits; or

Optionally, the method further comprises:

determining a number of the C bits according to a number of the first bandwidth portion, the first bandwidth portion being associated with the first transmission mode; or the like, or, alternatively,

determining the number of C bits based on a number of first bandwidth portions and a number of second bandwidth portions, the first bandwidth portions being associated with the first transmission mode and the second bandwidth portions being associated with the second transmission mode.

Optionally, the determining the number of C bits according to the number of the first bandwidth part and the number of the second bandwidth part includes:

determining the number of the C bits according to the sum of the number of the first bandwidth part and the number of the second bandwidth part; or

Determining the number of the C bits according to the sum of the number of the first bits and the number of the second bits, wherein the number of the first bits is determined according to the number of the first bandwidth part, and the number of the second bits is determined according to the number of the second bandwidth part.

Optionally, the second transmission mode is unicast, and the first transmission mode is multicast.

Optionally, the second transmission mode is a first multicast, and the first transmission mode is a second multicast.

Optionally, the second transmission mode is multicast, and the first transmission mode is unicast.

Fig. 6 illustrates an apparatus 600 for transmitting control signaling according to an embodiment of the present application, where the apparatus 600 may be a first device. The first device is, for example, the terminal described in fig. 2. The apparatus may employ a hardware architecture as shown in fig. 6. The apparatus may include a processor 610 and a transceiver 630, and optionally, the apparatus may further include a memory 640, the processor 610, the transceiver 630, and the memory 640 communicating with each other through an internal connection path. The related functions implemented by the processing module 520 in fig. 5 can be implemented by the processor 610, and the related functions implemented by the transceiver module 510 can be implemented by the processor 610 controlling the transceiver 630.

Alternatively, the processor 610 may be a general processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), a special-purpose processor, or one or more ics for executing embodiments of the present application. Alternatively, a processor may refer to one or more devices, circuits, and/or processing cores for processing data (e.g., computer program instructions). For example, a baseband processor, or a central processor. The baseband processor may be configured to process communication protocols and communication data, and the central processor may be configured to control a device for transmitting control signaling, execute a software program, and process data of the software program.

Optionally, the processor 610 may include one or more processors, for example, one or more Central Processing Units (CPUs), and in the case that the processor is one CPU, the CPU may be a single-core CPU or a multi-core CPU.

The transceiver 630 is used for transmitting and receiving data and/or signals, and receiving data and/or signals. The transceiver may include a transmitter for transmitting data and/or signals and a receiver for receiving data and/or signals.

The memory 640 includes, but is not limited to, a Random Access Memory (RAM), a read-only memory (ROM), an Erasable Programmable Read Only Memory (EPROM), and a compact disc read-only memory (CD-ROM), and the memory 640 is used for storing relevant instructions and data.

The memory 640 is used for storing program codes and data of the first device, and may be a separate device or integrated in the processor 610.

Specifically, the processor 610 is configured to control the transceiver to perform information transmission with the second device. Specifically, reference may be made to the description of the method embodiment, which is not repeated herein.

In particular implementations, apparatus 600 may also include an output device and an input device, as one embodiment. An output device, which is in communication with the processor 610, may display information in a variety of ways. For example, the output device may be a Liquid Crystal Display (LCD), a Light Emitting Diode (LED) display device, a Cathode Ray Tube (CRT) display device, a projector (projector), or the like. An input device is in communication with the processor 601 and may receive user input in a variety of ways. For example, the input device may be a mouse, a keyboard, a touch screen device, or a sensing device, among others.

It will be appreciated that fig. 6 only shows a simplified design of the apparatus for transmitting control signaling. In practical applications, the apparatus may further include necessary other components, including but not limited to any number of transceivers, processors, controllers, memories, etc., respectively, and all first devices that can implement the present application are within the scope of the present application.

In one possible design, the apparatus 600 may be a chip, such as a communication chip that may be used in a first device, for implementing the relevant functions of the processor 610 in the first device. The chip can be a field programmable gate array, a special integrated chip, a system chip, a central processing unit, a network processor, a digital signal processing circuit and a microcontroller which realize related functions, and can also adopt a programmable controller or other integrated chips. The chip may optionally include one or more memories for storing program code that, when executed, causes the processor to implement corresponding functions.

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

Fig. 7 shows a schematic block diagram of an apparatus 700 for transmitting control signaling according to an embodiment of the present application.

It is understood that the apparatus 700 may correspond to a second device, which may be a network device in the embodiment shown in fig. 2. The apparatus 700 may have any of the functions of the second device in the method. The apparatus 700 includes a transceiver module 710. Optionally, the apparatus 700 further comprises a processing module 720.

The transceiving module 710 sends a control signaling to a first device, where the control signaling includes first information, the first information is used to indicate a first transmission mode, and scrambling information of the control signaling corresponds to a second transmission mode.

Optionally, the processing module 720 is further configured to communicate with the first device over a bandwidth portion corresponding to the first transmission mode, and/or communicate with the first device over a bandwidth portion corresponding to the second transmission mode.

Optionally, the control signaling further includes indication information, where the indication information is used to indicate a target first bandwidth portion for transmission in the first transmission mode.

Optionally, the control signaling includes C bits, and values of a part of the C bits are used to determine the target first bandwidth part, or values of the C bits are used to determine the first bandwidth part.

The index of the target first bandwidth part is the value of the C bits; or

Fig. 8 illustrates an apparatus 800 for transmitting control signaling according to an embodiment of the present application, where the apparatus 800 may be a second device. Such as the network device described in fig. 2. The apparatus may employ a hardware architecture as shown in fig. 8. The apparatus may include a processor 810 and a transceiver 820, and optionally, the apparatus may further include a memory 830, the processor 810, the transceiver 820, and the memory 830 being in communication with each other via an internal connection path. The related functions implemented by the processing module 720 in fig. 7 can be implemented by the processor 810, and the related functions implemented by the transceiver module 710 can be implemented by the processor 810 controlling the transceiver 820.

Alternatively, the processor 810 may be a general processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), a special-purpose processor, or one or more ics for performing the embodiments of the present application. Alternatively, a processor may refer to one or more devices, circuits, and/or processing cores for processing data (e.g., computer program instructions). For example, a baseband processor, or a central processor. The baseband processor may be configured to process communication protocols and communication data, and the central processor may be configured to control a device (e.g., a base station, a terminal, or a chip) that transmits control signaling, execute a software program, and process data of the software program.

Optionally, the processor 810 may include one or more processors, for example, one or more Central Processing Units (CPUs), and in the case of one CPU, the CPU may be a single-core CPU or a multi-core CPU.

The transceiver 820 is used for transmitting and receiving data and/or signals, and receiving data and/or signals. The transceiver may include a transmitter for transmitting data and/or signals and a receiver for receiving data and/or signals.

The memory 830 includes, but is not limited to, a Random Access Memory (RAM), a read-only memory (ROM), an Erasable Programmable Read Only Memory (EPROM), and a compact disc read-only memory (CD-ROM), and the memory 830 is used for storing related instructions and data.

The memory 830, which is used to store program codes and data for the terminal, may be a separate device or integrated into the processor 810.

Specifically, the processor 810 is configured to control the transceiver to perform information transmission with the terminal. Specifically, reference may be made to the description of the method embodiment, which is not repeated herein.

In particular implementations, apparatus 800 may also include an output device and an input device, as one embodiment. An output device, which is in communication with the processor 810, may display information in a variety of ways. For example, the output device may be a Liquid Crystal Display (LCD), a Light Emitting Diode (LED) display device, a Cathode Ray Tube (CRT) display device, a projector (projector), or the like. The input device is in communication with the processor 701 and may receive user input in a variety of ways. For example, the input device may be a mouse, a keyboard, a touch screen device, or a sensing device, among others.

It will be appreciated that fig. 8 only shows a simplified design of the apparatus for transmitting control signaling. In practical applications, the apparatus may also include other necessary elements respectively, including but not limited to any number of transceivers, processors, controllers, memories, etc., and all terminals capable of implementing the present application are within the protection scope of the present application.

In one possible design, the apparatus 800 may be a chip, such as a communication chip that may be used in a terminal, for implementing the relevant functions of the processor 810 in the terminal. The chip can be a field programmable gate array, a special integrated chip, a system chip, a central processing unit, a network processor, a digital signal processing circuit and a microcontroller which realize related functions, and can also adopt a programmable controller or other integrated chips. The chip may optionally include one or more memories for storing program code that, when executed, causes the processor to implement corresponding functions.

The embodiment of the application also provides a device, which can be a network device or a circuit. The apparatus may be used to perform the actions performed by the network device in the above-described method embodiments.

Optionally, when the apparatus in this embodiment is a terminal, fig. 9 illustrates a simplified structural diagram of the terminal. For easy understanding and illustration, in fig. 9, the terminal is exemplified by a mobile phone. As shown in fig. 9, the terminal includes a processor, a memory, a radio frequency circuit, an antenna, and an input-output device. The processor is mainly used for processing communication protocols and communication data, controlling the terminal, executing software programs, processing data of the software programs and the like. The memory is used primarily for storing software programs and data. The radio frequency circuit is mainly used for converting baseband signals and radio frequency signals and processing the radio frequency signals. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are used primarily for receiving data input by a user and for outputting data to the user. It should be noted that some kinds of terminals may not have input/output devices.

When data needs to be sent, the processor performs baseband processing on the data to be sent and outputs baseband signals to the radio frequency circuit, and the radio frequency circuit performs radio frequency processing on the baseband signals and sends the radio frequency signals to the outside in the form of electromagnetic waves through the antenna. When data is sent to the terminal, the radio frequency circuit receives radio frequency signals through the antenna, converts the radio frequency signals into baseband signals and outputs the baseband signals to the processor, and the processor converts the baseband signals into the data and processes the data. For ease of illustration, only one memory and processor are shown in FIG. 9. In an actual end product, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or a storage device, etc. The memory may be provided independently of the processor, or may be integrated with the processor, which is not limited in this embodiment.

In the embodiment of the present application, the antenna and the radio frequency circuit having the transceiving function may be regarded as a transceiving unit of the terminal, and the processor having the processing function may be regarded as a processing unit of the terminal. As shown in fig. 9, the terminal includes a transceiving unit 910 and a processing unit 920. A transceiver unit may also be referred to as a transceiver, a transceiving device, etc. A processing unit may also be referred to as a processor, a processing board, a processing module, a processing device, or the like. Optionally, a device for implementing a receiving function in the transceiving unit 910 may be regarded as a receiving unit, and a device for implementing a transmitting function in the transceiving unit 910 may be regarded as a transmitting unit, that is, the transceiving unit 910 includes a receiving unit and a transmitting unit. A transceiver unit may also sometimes be referred to as a transceiver, transceiving circuitry, or the like. A receiving unit may also be referred to as a receiver, a receiving circuit, or the like. A transmitting unit may also sometimes be referred to as a transmitter, or a transmitting circuit, etc.

It should be understood that the transceiving unit 910 is configured to perform the transmitting operation and the receiving operation on the terminal side in the above-described method embodiments, and the processing unit 920 is configured to perform other operations on the terminal in the above-described method embodiments besides the transceiving operation.

For example, in one implementation, the processing unit 920 is configured to perform the processing step 202 in fig. 2 on the terminal side. The transceiving unit 910 is configured to perform transceiving operation in step 201 in fig. 2, and/or the transceiving unit 910 is further configured to perform other transceiving steps at the terminal side in this embodiment.

When the communication device is a chip, the chip includes a transceiver unit and a processing unit. The transceiver unit can be an input/output circuit and a communication interface; the processing unit is a processor or a microprocessor or an integrated circuit integrated on the chip.

Optionally, when the apparatus is a terminal, reference may also be made to the device shown in fig. 10. As an example, the device may perform functions similar to processor 610 of FIG. 6. In fig. 10, the apparatus includes a processor 1001, a transmit data processor 1003, and a receive data processor 1005. The processing module 520 in the above embodiments may be the processor 1001 in fig. 10, and performs corresponding functions. The transceiver module 510 in the above embodiments may be the transmission data processor 1003 and the reception data processor 1005 in fig. 10. Although fig. 10 shows a channel encoder and a channel decoder, it is understood that these blocks are not limitative and only illustrative to the present embodiment.

Fig. 11 shows another form of the present embodiment. The processing device 1100 includes modules such as a modulation subsystem, a central processing subsystem, and peripheral subsystems. The communication device in this embodiment may act as a modulation subsystem therein. In particular, the modulation subsystem may include a processor 1103 and an interface 1104. The processor 1103 performs the functions of the processing module 510, and the interface 1104 performs the functions of the transceiver module 511. As another variation, the modulation subsystem includes a memory 1106, a processor 1103, and a program stored on the memory and executable on the processor, and the processor implements the method embodiment shown in fig. 2 described above when executing the program. It should be noted that the memory 1106 may be non-volatile or volatile, and may be located within the modulation subsystem or within the processing device 1100, as long as the memory 1106 is connected to the processor 1103.

When the apparatus 700 in this embodiment is a network device, the network device may be as shown in fig. 12, where the apparatus 1200 includes one or more radio frequency units, such as a Remote Radio Unit (RRU) 1210 and one or more baseband units (BBUs) (which may also be referred to as digital units, DUs) 1220. The RRU 1210 may be referred to as a transceiver module, which corresponds to the transceiver module 710 in fig. 7, and may also be referred to as a transceiver, a transceiver circuit, or a transceiver, which may include at least one antenna 1216 and a radio unit 1217. The RRU 1210 is mainly used for transceiving radio frequency signals and converting the radio frequency signals and baseband signals, for example, for sending indication information to a terminal device. The BBU 1210 part is mainly used for performing baseband processing, controlling a base station, and the like. The RRU 1210 and the BBU 1220 may be physically disposed together or may be physically disposed separately, i.e., distributed base stations.

The BBU 1220 is a control center of the base station, and may also be referred to as a processing module, and may correspond to the processing module 720 in fig. 7, and is mainly used for performing baseband processing functions, such as channel coding, multiplexing, modulation, spreading, and the like. For example, the BBU (processing module) may be configured to control the base station to perform an operation procedure related to the network device in the foregoing method embodiment, for example, to generate the foregoing indication information.

In an example, the BBU 1220 may be formed by one or more boards, and the boards may collectively support a radio access network of a single access system (e.g., an LTE network), or may respectively support radio access networks of different access systems (e.g., an LTE network, a 5G network, or other networks). BBU 1220 further includes a memory 1221 and a processor 1222. The memory 1221 is used to store necessary instructions and data. The processor 1222 is configured to control the base station to perform necessary actions, for example, to control the base station to perform the operation procedures related to the network device in the above method embodiments. The memory 1221 and the processor 1222 may serve one or more boards. That is, the memory and processor may be provided separately on each board. Multiple boards may share the same memory and processor. In addition, each single board can be provided with necessary circuits.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a Digital Video Disk (DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), among others.

It should be understood that the processor may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The processor may be a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, or discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.

It will be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM, enhanced SDRAM, SLDRAM, Synchronous Link DRAM (SLDRAM), and direct bus RAM (DR RAM).

In the present application, "at least one" means one or more, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone, wherein A and B can be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or multiple.

It should be appreciated that reference throughout this specification to "an embodiment," "a possible design," or "a possible implementation" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment," "in one possible design," or "in one possible implementation" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in various embodiments of the present invention, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

As used in this specification, the terms "component," "module," "system," and the like are intended to refer to a computer-related entity, either hardware, firmware, a combination of hardware and software, or software in execution. For example, a component may be, but is not limited to being, a process running on a processor, an object, an executable, a thread of execution, a program, and/or a computer. By way of illustration, both an application running on a computing device and the computing device can be a component. One or more components can reside within a process and/or thread of execution and a component can be localized on one computer and/or distributed between 2 or more computers. In addition, these components can execute from various computer readable media having various data structures stored thereon. The components may communicate by way of local and/or remote processes such as in accordance with a signal having one or more data packets (e.g., data from two components interacting with another component in a local system, distributed system, and/or across a network such as the internet with other systems by way of the signal).

It should also be understood that the reference herein to first, second, and various numerical designations is merely a convenient division to describe and is not intended to limit the scope of the embodiments of the present application.

It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. Wherein A or B is present alone, and the number of A or B is not limited. Taking the case of a being present alone, it is understood to have one or more a.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

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

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

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

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

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method of transmitting control signaling, comprising:

receiving control signaling from a second device, where the control signaling includes first information, the first information is used to indicate a first transmission mode, and scrambling information of the control signaling corresponds to a second transmission mode.

2. The method of claim 1, further comprising:

determining, according to the control signaling, to communicate with the second device over a bandwidth corresponding to the first transmission mode and/or to communicate with the second device over a bandwidth corresponding to the second transmission mode.

3. The method according to claim 1 or 2, wherein the first information comprises second identification information and/or a preset field, the second identification information is used for scheduling transmission corresponding to the first transmission mode, and the preset field is associated with the first transmission mode.

4. The method according to claim 1 or 2, wherein the first information comprises a bandwidth part, BWP, field, the BWP field indicating the first transmission mode.

5. The method according to any of claims 1 to 4, wherein the control signaling further comprises indication information indicating a target first bandwidth portion corresponding to the first transmission mode.

6. The method of claim 5, wherein the indication information comprises C bits, and wherein the method further comprises:

7. The method of claim 6, wherein the index of the target first bandwidth portion is a difference between a value of the C bits and a number of second bandwidth portions associated with a second transmission mode; or

The index of the target first bandwidth part is the value of the C bits; or

8. The method according to claim 6 or 7, characterized in that the method further comprises:

determining a number of the C bits according to a number of first bandwidth portions, the first bandwidth portions being associated with the first transmission mode; or the like, or, alternatively,

9. The method of claim 8, wherein determining the number of C bits based on the number of first bandwidth parts and the number of second bandwidth parts comprises:

10. The method according to any of claims 1 to 9, wherein the second transmission mode is unicast and the first transmission mode is multicast.

11. The method according to any of claims 1 to 9, wherein the second transmission mode is a first multicast and the first transmission mode is a second multicast.

12. The method according to any of claims 1 to 9, wherein the second transmission mode is multicast and the first transmission mode is unicast.

13. A method of transmitting control signaling, comprising:

sending a control signaling to a first device, where the control signaling includes first information, the first information is used to indicate a first transmission mode, and scrambling information of the control signaling corresponds to a second transmission mode.

14. The method according to claim 13, wherein the first information comprises second identification information and/or a preset field, the second identification information is used for scheduling transmission corresponding to the first transmission mode, and the preset field is associated with the first transmission mode.

15. The method according to claim 13, wherein the first information comprises a bandwidth part BWP field, wherein the BWP field is used to indicate the first transmission mode.

16. The method according to any of claims 13 to 15, wherein the control signaling further comprises indication information indicating a target first bandwidth portion for transmission in the first transmission mode.

17. The method of claim 16, wherein the control signaling comprises C bits, and wherein values of a part of the C bits are used for determining the target first bandwidth part, or values of the C bits are used for determining the first bandwidth part.

18. The method of claim 17, wherein the index of the target first bandwidth portion is a difference between a value of the C bits and a number of second bandwidth portions associated with a second transmission mode; or

The index of the target first bandwidth part is the value of the C bits; or

19. The method according to any of claims 13 to 18, wherein the second transmission mode is unicast and the first transmission mode is multicast.

20. The method according to any of claims 13 to 18, wherein the second transmission mode is a first multicast and the first transmission mode is a second multicast.

21. The method according to any of claims 13 to 18, wherein the second transmission mode is multicast and the first transmission mode is unicast.

22. A communication apparatus comprising a processor coupled to a memory, the memory storing a computer program, the processor being configured to execute the computer program stored in the memory to cause the apparatus to perform the method of any of claims 1 to 12.

23. A communications apparatus comprising a processor coupled to a memory, the memory for storing a computer program, the processor for executing the computer program stored in the memory to cause the apparatus to perform the method of any of claims 13 to 21.

24. A computer-readable storage medium, characterized in that it stores a computer program which, when executed, implements the method according to any one of claims 1 to 12.

25. A computer-readable storage medium, characterized in that it stores a computer program which, when executed, implements the method according to any one of claims 13 to 21.

26. A chip comprising a processor and an interface;

the processor is configured to read instructions to perform the method of data transmission of any one of claims 1 to 12.

27. A chip comprising a processor and an interface;

the processor is configured to read instructions to perform the method of data transmission of any one of claims 13 to 21.

28. A communication system comprising the communication apparatus of claim 22 and the communication apparatus of claim 23.