Cell configuration method and apparatus

Abstract

The present application provides a cell configuration method. A network device sends first configuration information to user equipment, where the first configuration information comprises first indication information used for indicating that M carriers are configured for a first cell. The user equipment then configures the M carriers for the first cell by means of the first configuration information, where the M carriers are used for transmitting downlink data, and M is an integer greater than or equal to 2. On the basis of the above technical solution, multiple downlink carriers can be configured for a single cell, thereby improving user experience and further reducing the complexity of managing multiple downlink carriers.

Description

A cell configuration method and device

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on March 18, 2024, with application number 202410322878.0 and invention name “A Cell Configuration Method and Device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of wireless communications, and more particularly, to a cell configuration method and apparatus. Background Art

[0003] In existing carrier aggregation technology, a cell can only have one downlink carrier at most, and each cell still maintains independent radio resource management, which increases network-side management complexity. Furthermore, in existing carrier aggregation scenarios, a terminal may connect to multiple cells, requiring independent synchronization, radio resource control (RRC) configuration, and bandwidth configuration on multiple carriers, adding significant terminal complexity. Summary of the Invention

[0004] The present application aims to provide a cell configuration method that can configure multiple carriers for a single cell, thereby improving user experience and further reducing the complexity of managing multiple downlink carriers.

[0005] In a first aspect, a cell configuration method is provided, which can be executed by a network device or a component of the network device (such as a chip, circuit, or chip system). For ease of understanding, the following description is based on the example of a network device executing the method.

[0006] The method includes: determining first configuration information, the first configuration information including first indication information, the first indication information being used to indicate that M carriers are configured for a first cell, the M carriers being used to transmit downlink data, M≥2, and M being an integer; and sending the first configuration information.

[0007] In the technical solution of the present application, a network device determines first configuration information, which includes first indication information for instructing to configure M downlink carriers for a first cell, and sends the first configuration information to a terminal device. Subsequently, the terminal device configures the M downlink carriers for the first cell based on the first configuration information. Based on the above technical solution, the network device can configure multiple carriers for a single cell, thereby improving the user experience.

[0008] In combination with the first aspect, in certain implementations of the first aspect, the first configuration information also includes configuration information of the first bandwidth part BWP, and the frequency domain resources of the first BWP are the frequency domain resources in N carriers among the M carriers, where N≤M and N is a positive integer.

[0009] Based on the above technical solution, the network equipment can configure multiple carriers for a single cell, thereby improving user experience and further reducing the complexity of managing multiple downlink carriers.

[0010] In combination with the first aspect, in some implementations of the first aspect, the configuration information of the first BWP further includes N pieces of first resource information, and the N pieces of first resource information correspond one-to-one to the N carriers.

[0011] In combination with the first aspect, in certain implementations of the first aspect, the first resource information includes at least one of the following: subcarrier spacing SCS information, cyclic prefix type information, frequency domain position information, and control resource set CORESET information.

[0012] In combination with the first aspect, in certain implementations of the first aspect, the configuration information of the first BWP also includes indication information of a modulation and coding scheme-table MCS-table and / or channel state information resource configuration.

[0013] In combination with the first aspect, in some implementations of the first aspect, the first configuration information further includes second indication information, where the second indication information is used to indicate deletion of at least one carrier within the first cell.

[0014] In combination with the first aspect, in some implementations of the first aspect, the first configuration information further includes uplink and downlink frame ratio configuration information of at least one carrier among the M carriers.

[0015] In a second aspect, a cell configuration method is provided, which can be executed by a terminal device or by a component of the terminal device (such as a chip or circuit or chip system). For ease of understanding, the following description is based on the example of execution by a terminal device.

[0016] The method includes: receiving first configuration information, the first configuration information including first indication information, the first indication information being used to indicate that M carriers are configured for a first cell, the M carriers being used to transmit downlink data, M≥2, and M being an integer; and configuring the M carriers for the first cell according to the first configuration information.

[0017] It should be understood that the beneficial effects of the second aspect and any implementation thereof can refer to the first aspect and any implementation thereof.

[0018] In a third aspect, a communication device is provided, which may be a network device or a component of a network device (eg, a chip, a circuit, or a chip system).

[0019] The apparatus includes: a processing unit, configured to determine first configuration information, the first configuration information including first indication information, the first indication information being configured to indicate that M carriers are configured for a first cell, the M carriers being used to transmit downlink data, where M is greater than or equal to 2 and is a positive integer;

[0020] The transceiver unit is configured to send the first configuration information.

[0021] In a fourth aspect, a communication device is provided, which may be a terminal device or a component of the terminal device (eg, a chip, a circuit, or a chip system).

[0022] The apparatus includes: a transceiver unit, configured to receive first configuration information, the first configuration information including first indication information, the first indication information being used to indicate that M carriers are configured for a first cell, the M carriers being used to transmit downlink data, where M is greater than or equal to 2 and is a positive integer;

[0023] A processing unit is configured to configure the M carriers for the first cell according to the first configuration information.

[0024] In a fifth aspect, a communication device is provided, which includes: a memory for storing programs; and at least one processor for executing computer programs or instructions stored in the memory to execute the method provided in the above-mentioned first aspect and its implementation method or the second aspect.

[0025] In one implementation, the apparatus is a terminal device or a network device.

[0026] In another implementation, the device is a chip, a chip system or a circuit used in a terminal device or a network device.

[0027] In a sixth aspect, a communication device is provided, comprising: at least one processor and a communication interface, wherein the at least one processor is configured to retrieve a computer program or instruction stored in a memory through the communication interface to execute the method provided in the first aspect and its implementation or the second aspect. The communication interface may be implemented in hardware or software.

[0028] In one implementation, the apparatus further includes a memory.

[0029] In one implementation, the device includes a chip. Optionally, the chip further includes a memory.

[0030] When the method provided in this application is executed by a chip (i.e., when the above-mentioned apparatus includes a chip), this application does not limit the number of chips that implement the method of this application. For example, the method can be executed by one chip or by two or more chips. Furthermore, when the number of chips that implement the method of this application is two or more, the chip manufacturers are not limited and can be the same manufacturer or different manufacturers.

[0031] In a seventh aspect, a computer-readable storage medium is provided, which stores a program code for execution by a communication device, wherein the program code includes a method for executing the above-mentioned first aspect and its implementation method or the method provided by the second aspect.

[0032] In an eighth aspect, a computer program product comprising instructions is provided. When the computer program product is run on a communication device, the communication device executes the method provided in the first aspect and its implementation or the second aspect.

[0033] In a ninth aspect, a computer program is provided, which, when executed on a communication device, enables the method provided in the first aspect and its implementation or the second aspect to be executed.

[0034] In a tenth aspect, a communication system is provided, comprising the terminal device and network device described above.

[0035] It should be understood that the beneficial effects of the third to tenth aspects and any implementation thereof can refer to the first to second aspects and any implementation thereof. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] FIG1 is a schematic diagram of the architecture of a communication system 1000 used in an embodiment of the present application.

[0037] FIG2 is a schematic diagram of a carrier aggregation scenario.

[0038] FIG3 is a schematic diagram of PDCCH.

[0039] Figure 4 is a schematic diagram of CORESET.

[0040] FIG5 is a schematic diagram of frequency domain resource indication of CORESET.

[0041] FIG6 is a schematic flowchart of a configuration method 600 provided in an embodiment of the present application.

[0042] FIG7 is a schematic diagram of a mapping method of BWP within multiple carriers in a single cell.

[0043] FIG8 is a schematic diagram of the mapping method of PDSCH and PDCCH in multiple carriers of a single cell.

[0044] FIG9 is a schematic diagram of a communication device provided in an embodiment of the present application.

[0045] FIG10 is a schematic diagram of a communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0046] The technical solution in this application will be described below with reference to the accompanying drawings.

[0047] Figure 1 is a schematic diagram of the architecture of a communication system 1000 used in an embodiment of the present application. As shown in Figure 1 , the communication system includes a radio access network (RAN) 100. Optionally, the communication system 1000 may also include a core network 200 and the Internet 300.

[0048] The RAN 100 may include at least one RAN node (such as 110a and 110b in Figure 1, collectively referred to as 110), and may also include at least one terminal (such as 120a-120j in Figure 1, collectively referred to as 120). The RAN 100 may also include other RAN nodes, such as wireless relay equipment and / or wireless backhaul equipment (not shown in Figure 1). The terminal 120 is connected to the RAN node 110 via a wireless connection. Terminals and RAN nodes may be connected to each other via a wired or wireless connection. The RAN node 110 is connected to the core network 200 via a wireless or wired connection. The core network equipment in the core network 200 and the RAN node 110 in the RAN 100 may be independent and different physical devices, or they may be the same physical device that integrates some or all of the logical functions of the core network equipment and some or all of the logical functions of the RAN node.

[0049] RAN100 may be an evolved universal terrestrial radio access (E-UTRA) system, a new radio (NR) system, a sixth generation (6G) radio access system, or future radio access systems defined in the 3rd Generation Partnership Project (3GPP), or a wireless fidelity (WiFi) system. RAN100 may also include two or more of the aforementioned different radio access systems. RAN100 may also be an open RAN (O-RAN).

[0050] A RAN node, also known as a radio access network device, RAN entity, or access node, helps terminals access a communication system wirelessly. In one application scenario, a RAN node can be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next-generation NodeB (gNB) in a fifth-generation (5G) mobile communication system, a next-generation base station in a 6G mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system. A RAN node can be a macro base station (such as 110a in Figure 1), a micro base station, an indoor station (such as 110b in Figure 1), a relay node, or a donor node.

[0051] In another application scenario, multiple RAN nodes can collaborate to help terminals achieve wireless access, with different RAN nodes implementing portions of the base station's functions. For example, a RAN node can be a centralized unit (CU), a distributed unit (DU), or a radio unit (RU). The CU implements the base station's radio resource control protocol and packet data convergence protocol (PDCP) functions, as well as the service data adaptation protocol (SDAP) functions. The DU implements the base station's radio link control layer and medium access control (MAC) layer functions, as well as some or all of the physical layer functions. For detailed descriptions of each of these protocol layers, refer to the relevant 3GPP technical specifications. The RU can be used to implement the transmission and reception of radio frequency signals. The CU and DU can be two independent RAN nodes, or they can be integrated into the same RAN node, such as in a baseband unit (BBU). The RU may be included in a radio frequency device, such as a remote radio unit (RRU) or an active antenna unit (AAU). The CU may be further divided into two types of RAN nodes: the CU-control plane and the CU-user plane.

[0052] In different systems, RAN nodes may have different names. For example, in an O-RAN system, a CU may be referred to as an open CU (O-CU), a DU may be referred to as an open DU (O-DU), and a RU may be referred to as an open RU (O-RU). In the present application, a RAN node may be implemented by a software module, a hardware module, or a combination of a software module and a hardware module. For example, a RAN node may be a server loaded with a corresponding software module. The embodiments of the present application do not limit the specific technology and specific device form used by the RAN node. For ease of description, a network device or a base station is used as an example of a RAN node.

[0053] A terminal is a device with wireless transceiver capabilities that can send signals to a base station or receive signals from a base station. A terminal may also be referred to as a terminal device, user equipment (UE), mobile station, mobile terminal, etc. Terminals can be widely used in various scenarios, such as device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (IoT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grid, smart furniture, smart office, smart wearable, smart transportation, smart city, etc. A terminal can be a mobile phone, tablet computer, computer with wireless transceiver capabilities, wearable device, vehicle, airplane, ship, robot, robotic arm, smart home device, etc. The embodiments of this application do not limit the specific technology and specific device form adopted by the terminal.

[0054] Base stations and terminals can be fixed or mobile. They can be deployed on land, indoors or outdoors, handheld or vehicle-mounted; on water; or on aircraft, balloons, and satellites. The embodiments of this application do not limit the application scenarios of base stations and terminals.

[0055] The roles of base stations and terminals can be relative. For example, the helicopter or drone 120i in Figure 1 can be configured as a mobile base station. To terminals 120j accessing the wireless access network 100 via 120i, terminal 120i is a base station. However, to base station 110a, 120i is a terminal, meaning that communication between 110a and 120i occurs via a wireless air interface protocol. Of course, communication between 110a and 120i can also occur via a base station-to-base station interface protocol. In this case, 120i is also a base station relative to 110a. Therefore, base stations and terminals can be collectively referred to as communication devices. 110a and 110b in Figure 1 can be referred to as communication devices with base station functionality, while 120a-120j in Figure 1 can be referred to as communication devices with terminal functionality.

[0056] Communication between base stations and terminals, between base stations, and between terminals can be carried out through authorized spectrum, unauthorized spectrum, or both; communication can be carried out through spectrum below 6 gigahertz (GHz), spectrum above 6 GHz, or spectrum below 6 GHz and spectrum above 6 GHz. The embodiments of the present application do not limit the spectrum resources used for wireless communication.

[0057] In the embodiments of the present application, the functions of the base station may also be performed by a module (such as a chip) in the base station, or by a control subsystem that includes the base station functions. The control subsystem that includes the base station functions here may be a control center in the above-mentioned application scenarios such as smart grid, industrial control, smart transportation, and smart city. The functions of the terminal may also be performed by a module (such as a chip or modem) in the terminal, or by a device that includes the terminal functions.

[0058] In this application, a base station sends downlink signals or downlink information to a terminal, and the downlink information is carried on a downlink channel. The terminal sends uplink signals or uplink information to the base station, and the uplink information is carried on an uplink channel. In order to communicate with the base station, the terminal needs to establish a wireless connection with the cell controlled by the base station. The cell with which the terminal has established a wireless connection is called the serving cell of the terminal.

[0059] To facilitate understanding of the embodiments of the present application, some basic concepts involved in the present application are briefly described.

[0060] 1. Cell: It is a set of resources managed by the base station, including frequency domain resources and spatial domain resources. The frequency domain resources of a cell include uplink frequency domain resources and / or downlink frequency domain resources; the spatial domain resources of a cell can be the spatial domain resources corresponding to a beam or a group of beams, and can also be understood as a cell corresponding to a specific physical coverage area. In an embodiment of the present application, different cells can be managed by different base stations. For example, cell #1 and cell #2 can be managed by different base stations. In this case, it can be said that cell #1 and cell #2 do not share the same site. Cell #1 and cell #2 can also be managed by the same base station, which can be said to be co-located with cell #1 and cell #2. For two co-located cells, they can have the same baseband processing unit and / or radio frequency processing unit, or they can have different baseband processing units and radio frequency processing units. This application does not limit this.

[0061] 2. Carrier: A carrier is a radio signal (electromagnetic wave) with a specific frequency, bandwidth, and format, transmitted by a communication device (such as a base station or user equipment). It is the main body used to carry information and is also called the "carrier frequency." In NR, a cell can be configured with one downlink carrier and zero uplink carriers, one downlink carrier and one uplink carrier, or one downlink carrier and two uplink carriers.

[0062] 3. Carrier aggregation (CA): It is the aggregation of two or more component carriers (CCs) to support a larger transmission bandwidth. In this application, CC and carrier can be used interchangeably. The CA technology in NR is used to increase the transmission bandwidth of a single user. Specifically, carrier aggregation technology can realize the integration of multi-frequency resources. For example, through CA technology, spectrum resources in the same frequency band or different frequency bands can be aggregated and provided to terminals for use, thereby improving the utilization of the entire network resources and improving the user experience. For ease of understanding, the CA technology is briefly introduced in conjunction with Figure 2.

[0063] Figure 2 is a schematic diagram of a carrier aggregation scenario. As shown in Figure 2, the component carriers corresponding to cell #1, cell #2, and cell #3 are aggregated to provide service to the terminal. Cell #1 is the primary cell (PCell), and cells #2 and #3 are secondary cells (SCells). Among them, PCell is the cell where the terminal establishes the initial connection or the cell where the RRC connection is reestablished. PCell is responsible for establishing an RRC connection with the terminal and then communicating RRC signaling. The carrier unit corresponding to PCell is called the primary component carrier (PCC) (as shown in Figure 2), the downlink (DL) carrier of PCell is called DL PCC, and the uplink (UL) carrier of PCell is called UL PCC; SCell is added during RRC reconfiguration to provide additional wireless resources. There is no RRC connection between SCell and UE. The carrier unit corresponding to SCell is called secondary component carrier (SCC) (as shown in Figure 2 SCC#1 and SCC#2), the downlink carrier of SCell is called DL SCC, and the uplink carrier of SCell is called UL SCC.

[0064] 4. Bandwidth Part (BWP): A BWP is a contiguous frequency resource on a carrier. One or more BWPs can be configured on a carrier. The bandwidth of a BWP on a carrier is less than or equal to the bandwidth of the carrier. When a BWP is configured and activated, it is called an active BWP.

[0065] Based on the base station load and the UE's service requirements, the base station can activate different bandwidth workarounds for the UE. For example, when the UE is performing extensive data services, the base station will activate a wider bandwidth BWP for the UE. If the base station detects that the UE's current data volume is low, it can activate a smaller bandwidth BWP for the UE. According to existing protocols, a terminal has one activated downlink BWP on each downlink carrier and one activated uplink BWP on each uplink carrier. Generally speaking, uplink data and control information transmitted by the terminal are sent within the activated uplink BWP, and downlink data and control information are received within the activated downlink BWP.

[0066] 5. Physical Downlink Control Channel (PDCCH): PDCCH can be used to send downlink scheduling information (DL assignment) to terminal devices so that terminal devices can receive physical downlink shared channel (PDSCH). PDCCH can also be used to send uplink grant (UL Grant) to terminal devices so that terminal devices can send physical uplink shared channel (PUSCH). PDCCH can also be used to send aperiodic channel quality indicator (CQI) report requests. PDCCH can also be used to notify multicast control channel (MCCH) changes. PDCCH can also be used to send uplink power control commands. PDCCH can also be used for hybrid automatic repeat request (HARQ) related information. PDCCH can also be used to carry radio network temporary identifier (RNTI), which is implicitly included in the cyclic redundancy check (CRC), etc.

[0067] Figure 3 is a schematic diagram of the PDCCH. PDCCH resources are ultimately mapped to resource blocks (RBs). However, a PDCCH occupies a large number of RBs. Using RBs to describe the resources occupied by the PDCCH is not very convenient, so the concepts of resource-element groups (REGs) and control channel elements (CCEs) were introduced. For example, one CCE corresponds to six REGs, and each REG corresponds to one RB. Both the resources that the PDCCH may occupy and the resources actually occupied by the PDCCH are described using CCEs. For example, with a 100MHz (273RB) bandwidth and a 30kHz subcarrier spacing within a symbol, there are a maximum of 45 CCEs (270RBs).

[0068] 6. Control-resource set (CORESET): CORESET is a control channel resource set used to carry control channels, that is, resources for transmitting control channels. In the NR system, due to the large system bandwidth (up to 400M), if the PDCCH still occupies the entire bandwidth, it will not only waste resources and increase the blind detection complexity, but also some UEs will not be able to receive the entire bandwidth signal. In addition, in order to increase system flexibility, the starting position of the PDCCH in the time domain can also be configured. In this case, the UE must know the position of the PDCCH in the frequency domain and the position in the time domain to successfully decode the PDCCH.

[0069] For convenience, the NR system encapsulates information such as the frequency band occupied by the PDCCH in the frequency domain and the number of orthogonal frequency division multiplexing (OFDM) symbols occupied in the time domain into a CORESET, as shown in Figure 4. Figure 4 is a schematic diagram of a CORESET. Information such as the PDCCH starting OFDM symbol number and the PDCCH monitoring period are encapsulated into a search space (SS) cell. Each SS is associated with a CORESET, and the PDCCH configuration can be determined by binding a CORESET to an SS.

[0070] The frequency domain resource configuration of a CORESET is primarily indicated by the frequencyDomainResources parameter. Assuming the 45 bits of frequencyDomainResources are set to 11110100000....., the CORESET resources are determined as follows. First, assuming the common resource block (CRB) index at the start of the BWP to which the CORESET belongs is CRB 4, the CRB index corresponding to the first RB group is calculated as: The physical resource block (PRB) index of the core set at the start of its BWP is PRB 2. The corresponding core set resources are shown in Figure 5, which is a schematic diagram of the frequency domain resource indication of the core set. The core set occupies a total of 5 (5 bits set to 1) * 6 (each bit contains 6 RBs) = 30 RBs.

[0071] 7. PDSCH: A physical layer downlink channel that primarily carries user data. To receive the PDSCH, the UE must first decode the PDCCH. The downlink control information carried by the PDCCH specifies how the PDSCH is transmitted over the air interface. The downlink control information specifies the resources occupied by the PDSCH, the modulation and coding scheme (MCS), information related to initial transmission or retransmission, layers, and precoding.

[0072] The technical solution provided by this application will be described in detail below with reference to the accompanying drawings.

[0073] FIG6 is a schematic flow chart of a configuration method 600 provided in an embodiment of the present application. As shown in FIG6 , the method may include at least the following steps.

[0074] S610: The network device determines first configuration information.

[0075] S620: The network device sends first configuration information to the terminal device. Correspondingly, the terminal device receives the first configuration information.

[0076] S630: The terminal device configures M carriers for the first cell according to the first configuration information.

[0077] Specifically, the first configuration information includes first indication information, which is used to indicate that M carriers are configured for the first cell, where the M carriers are used to transmit downlink data, M≥2, and M is a positive integer. It should be understood that the M carriers may also be referred to as M downlink carriers.

[0078] It should be noted that a certain synchronization relationship needs to be maintained between the M carriers within the first cell. For example, the reception time difference between the M carriers by the terminal device must be less than a certain threshold, for example, the threshold may be 65ns. It should be understood that the above description of ensuring a certain synchronization relationship between the M carriers is for illustrative purposes only and is not limited in this embodiment of the present application.

[0079] It should be noted that the first configuration information is information about the shared configuration of all carriers in the first cell.

[0080] In a possible implementation, the first indication information may be a downlinkcarrier-ToAddList parameter, which is used to indicate that M carriers are configured for the first cell. The terminal device configures M carriers for the first cell according to the first indication information.

[0081] Optionally, in one possible implementation, the first configuration information includes indication information #A for indicating that multiple BWPs are configured for the first cell. For example, the indication information #A may be a downlinkBWP-ToAddList parameter. Upon receiving the indication information #A, the terminal device configures multiple BWPs for the first cell.

[0082] Optionally, in a possible implementation, the first configuration information further includes configuration information of a first BWP. After receiving the configuration information of the first BWP, the terminal device configures the first BWP for the first cell. It should be understood that the first BWP can be any one of the multiple BWPs described above.

[0083] Specifically, the frequency domain resources of the first BWP are the frequency domain resources in N carriers out of M carriers, where N≤M and N is a positive integer. It should be noted that the frequency domain resources of the first BWP are the frequency domain resources in N carriers out of M carriers, which can be understood as the first BWP being mapped to N carriers out of M carriers, as shown in Figure 7. Alternatively, it can also be understood that the frequency domain resources of the first BWP are composed of the frequency domain resources of N carriers out of M carriers, where the first BWP includes part or all of the frequency domain resources of each carrier in the N carriers. Alternatively, it can also be understood that the configuration information of each carrier in the N carriers is associated with the identifier (ID) information of the first BWP.

[0084] Figure 7 is a schematic diagram of a mapping method of BWP in a single cell with multiple carriers. For example, M=3, that is, 3 carriers are configured in the first cell, for illustration.

[0085] As shown in the upper diagram of FIG7 , the first BWP (ie, BWP1) is mapped to three carriers, that is, the first BWP is mapped to three carriers out of three carriers, ie, M=N=3.

[0086] As shown in the middle diagram of FIG7 , the first BWP (ie, BWP2) is mapped to two carriers, that is, the first BWP is mapped to two carriers out of three carriers, ie, N=2.

[0087] As shown in the lower figure of FIG7 , the first BWP (ie, BWP3) is mapped to one carrier, that is, the first BWP is mapped to one carrier among three carriers, ie, N=1.

[0088] Here, "mapping" can also be described as "across", "corresponding", "associated", etc., and this application does not limit this.

[0089] Furthermore, in an embodiment of the present application, the configuration information of the first BWP also includes N first resource information, wherein the first resource information includes at least one of the following: subcarrier spacing (SCS) information, cyclic prefix configuration type information, and frequency domain position information.

[0090] Optionally, in a possible implementation, the N first resource information correspond one-to-one to the N carriers. For example, in a possible implementation, the N first resource information correspond one-to-one to the index values ​​of the N carriers.

[0091] For example, when the first resource information is SCS information, the configuration information of the first BWP includes N SCS information, and the N SCS information corresponds one-to-one to the index values ​​of the N carriers. The following takes N=3 as an example, that is, the first BWP is mapped to 3 carriers.

[0092] Specifically, the configuration information of the first BWP includes three SCS information, for example (15kHz, 15kHz, 30kHz). The three SCS information correspond one-to-one to the index values ​​of the three carriers mapped by the first BWP, which can be understood as the following possible examples.

[0093] In Example 1, assume that three carriers are arranged in ascending order of index value: carrier #1, carrier #2, and carrier #3. The SCS information corresponding to these three carriers is 15 kHz, 15 kHz, and 30 kHz, respectively. That is, the SCS information corresponding to carrier #1 is 15 kHz, the SCS information corresponding to carrier #2 is 15 kHz, and the SCS information corresponding to carrier #3 is 30 kHz.

[0094] In Example 2, assume that the three carriers are arranged in descending order of index value: carrier #3, carrier #2, and carrier #1. In this case, the SCS information corresponding to these three carriers is 15 kHz, 15 kHz, and 30 kHz, respectively. That is, the SCS information corresponding to carrier #3 is 15 kHz, the SCS information corresponding to carrier #2 is 15 kHz, and the SCS information corresponding to carrier #1 is 30 kHz.

[0095] Example three, the network device obtains the first correspondence information, which is used to indicate the one-to-one correspondence between the three SCS information first resource information and the index values ​​of the three carriers. For example, the one-to-one correspondence between the SCS information indicated by the first correspondence information and the index value of the carrier can be as shown in Table 1.

[0096] Table 1 One-to-one correspondence between SCS information and carrier index values

[0097] As shown in Table 1, the SCS information corresponding to carrier #1 is 15kHz, the SCS information corresponding to carrier #3 is 15kHz, and the SCS information corresponding to carrier #2 is 30kHz.

[0098] Exemplarily, when the first resource information is cyclic prefix configuration type information, the configuration information of the first BWP includes N pieces of cyclic prefix configuration type information, and the N pieces of cyclic prefix configuration type information correspond one-to-one to the index values ​​of the N carriers. The following description takes N=3 as an example, i.e., the first BWP is mapped to three carriers.

[0099] Specifically, the configuration information of the first BWP includes three cyclic prefix configuration type information, such as (normal CP, normal CP, extended CP). The three cyclic prefix configuration type information correspond one-to-one to the index values ​​of the three carriers mapped by the first BWP, which can be understood as the following possible examples.

[0100] In Example 1, assume that three carriers are arranged in ascending order of index value: carrier #1, carrier #2, and carrier #3. The cyclic prefix configuration type information corresponding to these three carriers is normal CP, normal CP, and extended CP, respectively. That is, the cyclic prefix configuration type information corresponding to carrier #1 is normal CP, the cyclic prefix configuration type information corresponding to carrier #2 is normal CP, and the cyclic prefix configuration type information corresponding to carrier #3 is extended CP.

[0101] In Example 2, assume that three carriers are arranged in descending order of index value: carrier #3, carrier #2, and carrier #1. The cyclic prefix configuration type information corresponding to these three carriers is normal CP, normal CP, and extended CP, respectively. That is, the cyclic prefix configuration type information corresponding to carrier #3 is normal CP, the cyclic prefix configuration type information corresponding to carrier #2 is normal CP, and the cyclic prefix configuration type information corresponding to carrier #1 is extended CP.

[0102] Example three: The network device obtains second correspondence information, which is used to indicate a one-to-one correspondence between three cyclic prefix configuration type information and the index values ​​of three carriers. For example, the one-to-one correspondence between the cyclic prefix configuration type information and the index value of the carrier indicated by the second correspondence information can be as shown in Table 2.

[0103] Table 2 One-to-one correspondence between cyclic prefix configuration type information and carrier index value

[0104] As shown in Table 2, the cyclic prefix configuration type information corresponding to carrier #1 is normal CP, the cyclic prefix configuration type information corresponding to carrier #3 is normal CP, and the cyclic prefix configuration type information corresponding to carrier #2 is extended CP.

[0105] Exemplarily, when the first resource information is frequency domain location information, the configuration information of the first BWP includes N frequency domain location information, and the N frequency domain location information corresponds one-to-one to the index values ​​of the N carriers. The following takes N=3 as an example, that is, the first BWP is mapped to 3 carriers.

[0106] Optionally, in a possible implementation, it is assumed that the frequency domain position information of the N carriers to which the first BWP is mapped, such as PRB resources, are independently numbered, where independent numbering of PRB resources refers to independent numbering of PRBs on each carrier, for example, the corresponding PRB number on carrier 1 is 0-99, the corresponding PRB number on carrier 2 is 0-99, and the corresponding PRB number on carrier 3 is 0-99.

[0107] Specifically, the configuration information of the first BWP includes three frequency domain location information, for example, PRB numbers (40-99, 0-15, 10-50). The three frequency domain location information correspond one-to-one to the index values ​​of the three carriers mapped by the first BWP, which can be understood as the following possible examples.

[0108] In Example 1, assume that three carriers are arranged in ascending order of index value as carrier #1, carrier #2, and carrier #3. The frequency domain position information corresponding to these three carriers is, for example, PRB numbers 40-99, 0-15, and 10-50. That is, the frequency domain position information corresponding to carrier #1 is 40-99, the frequency domain position information corresponding to carrier #2 is 0-15, and the frequency domain position information corresponding to carrier #3 is 10-50.

[0109] In Example 2, assume that three carriers are arranged in descending order of index value as carrier #3, carrier #2, and carrier #1. In this case, the frequency domain position information corresponding to these three carriers, for example, PRB numbers 40-99, 0-15, and 10-50, is as follows. That is, the frequency domain position information corresponding to carrier #3 is 40-99, the frequency domain position information corresponding to carrier #2 is 0-15, and the frequency domain position information corresponding to carrier #1 is 10-50.

[0110] Example three, the network device obtains the first correspondence information, and the third correspondence information is used to indicate the one-to-one correspondence between the three frequency domain position information and the index values ​​of the three carriers. For example, the one-to-one correspondence between the frequency domain position information and the index value of the carrier indicated by the third correspondence information can be as shown in Table 3.

[0111] Table 3 One-to-one correspondence between frequency domain position information and carrier index values

[0112] As shown in Table 1, the frequency domain position information corresponding to carrier #1, for example, PRB numbers 40-99, the frequency domain position information corresponding to carrier #3, for example, PRB numbers 0-15, and the frequency domain position information corresponding to carrier #2, for example, PRB numbers 10-50.

[0113] It should be noted that the first correspondence information, the second correspondence information, and the third correspondence information mentioned above may be pre-configured by the network device.

[0114] Optionally, in a possible implementation, it is assumed that the frequency domain position information of the N carriers to which the first BWP is mapped, such as PRB resources, is jointly numbered. For example, the corresponding PRB number on carrier 1 is 0-99, the corresponding PRB number on carrier 2 is 100-199, and the corresponding PRB number on carrier 3 is 200-299.

[0115] In this case, the network device may also indicate which frequency domain location information (PRB resources) on the N carriers is occupied by the first BWP by means of a bitmap.

[0116] For example, at this time there are 3 carriers in the first cell, and the PRB resources on the 3 carriers are jointly numbered, that is, the corresponding PRB numbers on carrier #1 are 0-99, the corresponding PRB numbers on carrier #2 are 100-199, and the corresponding PRB numbers on carrier #3 are 200-299.

[0117] Assuming that the resource block group (RBG) size of each carrier is defined as 10 RBs, a total of 30 bits (corresponding to 30 RBGs) of indication information are required to determine the three frequency domain resource locations of the first BWP distributed on the three carriers. For example, when the bit corresponding to the RBG is 1, it indicates that the RBG is the frequency domain resource location occupied by the first BWP; when the bit corresponding to the RBG is 0, it indicates that the RBG is not the frequency domain resource location occupied by the first BWP.

[0118] It should be noted that the first resource information mentioned above may also include two or three of the SCS information, cyclic prefix configuration type information, and frequency domain location information. For example, the first resource information may be SCS information and cyclic prefix configuration information, or the first resource information may be SCS information and frequency domain location information, or the first resource information may be cyclic prefix configuration information and frequency domain location information, or the first resource information may be SCS information, cyclic prefix configuration type information, and frequency domain location information.

[0119] The following is an example of the first resource information including SCS information, cyclic prefix configuration type information and frequency domain location information. For examples of the first resource information including any two of the SCS information, cyclic prefix configuration type information and frequency domain location information, please refer to the examples below and will not be repeated here.

[0120] Exemplarily, in one possible implementation, when the first resource information includes SCS information, cyclic prefix configuration type information, and frequency domain location information, the configuration information of the first BWP includes N configuration information (e.g., configuration information #1, configuration information #2, ..., configuration information #n), where each of the N configuration information includes SCS information, cyclic prefix configuration type information, and frequency domain location information, and the N configuration information #1s correspond one-to-one to the index values ​​of the N carriers. The following description takes N=3 as an example, i.e., the first BWP is mapped to three carriers.

[0121] In Example 1, assume that three carriers are arranged in ascending order of index values ​​as carrier #1, carrier #2, and carrier #3. At this time, the configuration information corresponding to these three carriers is (configuration information #1, configuration information #2, configuration information #3). That is, carrier #1 corresponds to configuration information #1, for example, configuration information #1 can be (SCS information 1, cyclic prefix type information 1, frequency domain location information 1), carrier #2 corresponds to configuration information #2, for example, configuration information #2 can be (SCS information 2, cyclic prefix type information 2, frequency domain location information 2), and carrier #3 corresponds to configuration information #3, for example, configuration information #3 can be (SCS information 3, cyclic prefix type information 3, frequency domain location information 3).

[0122] In Example 2, assume that three carriers are arranged in descending order of index value: carrier #3, carrier #2, and carrier #1. In this case, the configuration information corresponding to these three carriers is (configuration information #1, configuration information #2, configuration information #3). That is, carrier #3 corresponds to configuration information #1, carrier #2 corresponds to configuration information #2, and carrier #1 corresponds to configuration information #3.

[0123] Example three: The network device obtains fourth correspondence information, which is used to indicate a one-to-one correspondence between three configuration information and index values ​​of three carriers. For example, the one-to-one correspondence between the configuration information indicated by the fourth correspondence information and the index value of the carrier can be as shown in Table 3.

[0124] Table 4 One-to-one correspondence between configuration information and carrier index values

[0125] As shown in Table 4, the frequency domain position information corresponding to carrier #1, for example, PRB numbers 40-99, the frequency domain position information corresponding to carrier #3, for example, PRB numbers 0-15, and the frequency domain position information corresponding to carrier #2, for example, PRB numbers 10-50.

[0126] It should be noted that the fourth correspondence information mentioned above may be pre-configured by the network device, and the specific information indicated by the fourth correspondence information is only for illustration, and the embodiment of the present application does not impose any limitation on this.

[0127] For example, configuration information #1 can be (15 kHz, normal CP, 40-99). Combined with Example 1 above, this means that the SCS information of carrier #1 is 15 kHz, the cyclic prefix configuration type is normal CP, and the PRB resources are 40-99. For details about configuration information #2 and configuration information #3, refer to the description of configuration information #1. For details about other examples, refer to the relevant description of Example 1, and will not be repeated here.

[0128] Furthermore, in the present application, the first cell supports the configuration of M downlink carriers (M≥2), and the first BWP supports mapping to N carriers out of the M carriers. At this time, the PDCCH resources and PDSCH resources within the first BWP can also be discretely distributed on the N carriers within the first cell, as shown in Figure 8, which is a schematic diagram of the mapping method of single-cell PDCCH resources and PDSCH resources provided in an embodiment of the present application.

[0129] It should be understood that PDCCH resources are associated with CORESET (control resource set) resources, so the configuration of PDCCH resources can also correspond to the configuration method of CORESET resources. It should be noted that the specific description of the association between PDCCH resources and PDSCH resources and CORESET resources can be referred to the previous article and will not be repeated here.

[0130] Optionally, in a possible implementation, the configuration information of the first BWP also includes configuration information of the first CORESET. After receiving the configuration information of the first CORESET, the terminal device configures the first CORESET for the first BWP, that is, configures the first PDCCH or the first PDSCH for the first BWP.

[0131] The frequency domain resources of the first CORESET are frequency domain resources in N carriers out of M carriers, where N≤M and N is a positive integer.

[0132] It should be noted that the frequency domain resources of the first CORESET are the frequency domain resources of N carriers among the M carriers. It can be understood that the first CORESET is mapped to N carriers among the M carriers. As shown in Figure 8, taking M=3 as an example, that is, the first cell is configured with 3 carriers, at this time, the first CORESET is mapped to 3 carriers, that is, N=3 at this time. Among them, "mapping" can also be described as "across", "corresponding", "associated", etc., and this application is not limited here.

[0133] Alternatively, it can be understood that the configuration information of each carrier in the N carriers is associated with the ID information of the first CORESET.

[0134] Optionally, in a possible implementation manner, the first resource information mentioned above may further include CORESET information, wherein the CORESET information may be PRB resource information or the number of symbols of the CORESET on each carrier.

[0135] It should be noted that the CORESET information may be included in the configuration information of the first BWP described above, or may also be included in the configuration information of the first CORESET described above. The following description will be made by taking the case where the CORESET information is included in the configuration information of the first CORESET as an example.

[0136] Exemplarily, when the CORESET information is PRB resource information, the configuration information of the first CORESET includes N PRB resource information, and the N PRB resource information corresponds one-to-one to the index values ​​of the N carriers. The following takes N=3 as an example, that is, the first CORESET is mapped to 3 carriers.

[0137] Optionally, in a possible implementation, it is assumed that the PRB resources of the N carriers mapped to the first CORESET are independently numbered, where the independent numbering of PRB resources means that the PRBs on each carrier are independently numbered, for example, the corresponding PRB number on carrier 1 is 0-99, the corresponding PRB number on carrier 2 is 0-99, and the corresponding PRB number on carrier 3 is 0-99.

[0138] Specifically, the configuration information of the first CORESET includes three PRB resource information, for example, the three PRB resource information are resource information with PRB numbers (40-99, 0-15, 10-50). The three PRB resource information correspond one-to-one to the index values ​​of the three carriers mapped by the first CORESET, which can be understood as the following possible examples.

[0139] In Example 1, assume that three carriers are arranged in ascending order of index value as carrier #1, carrier #2, and carrier #3. The PRB resource information corresponding to these three carriers is, for example, numbered 40-99, 0-15, and 10-50. That is, the PRB resources corresponding to carrier #1 are numbered 40-99, the PRB resources corresponding to carrier #2 are numbered 0-15, and the PRB resources corresponding to carrier #3 are numbered 10-50.

[0140] In Example 2, assume that three carriers are arranged in descending order of index value as carrier #3, carrier #2, and carrier #1. The PRB resource information corresponding to these three carriers is, for example, PRB numbers 40-99, 0-15, and 10-50. That is, the PRB resources corresponding to carrier #3 are numbered 40-99, the PRB resources corresponding to carrier #2 are numbered 0-15, and the PRB resources corresponding to carrier #1 are numbered 10-50.

[0141] Example three: The network device obtains the fifth correspondence information, which is used to indicate the one-to-one correspondence between 3 PRB resource information and the index values ​​of 3 carriers. For example, the one-to-one correspondence between the PRB resources and the carrier index values ​​indicated by the fifth correspondence information can be as shown in Table 5.

[0142] Table 5 One-to-one correspondence between PRB resources and carrier index values

[0143] As shown in Table 5, the PRB resources corresponding to carrier #1 are numbered 40-99, the PRB resources corresponding to carrier #3 are numbered 0-15, and the PRB resources corresponding to carrier #2 are numbered 10-50.

[0144] It should be noted that the fifth correspondence information mentioned above may be pre-configured on the network side, and the specific indication content of the fifth correspondence information mentioned above is only for illustration and is not limited here.

[0145] Optionally, in a possible implementation, assuming that the PRB resources of the N carriers to which the first CORESET is mapped are jointly numbered, for example, the corresponding PRB resources on carrier 1 are numbered 0-99, the corresponding PRB resources on carrier 2 are numbered 100-199, and the corresponding PRB resources on carrier 3 are numbered 200-299. Then, a CCE resource with a larger granularity can be defined, such as 12 RBs as a group CCE resource set, and a bitmap indication method can still be used to indicate which RB resources are the RB resources corresponding to the CORESET.

[0146] It should be noted that the specific instructions for the bitmap can be found in the previous text and will not be described here.

[0147] For example, when the CORESET information is a symbol number, the configuration information of the first CORESET includes N symbol numbers, and the N symbol numbers correspond one-to-one to the index values ​​of the N carriers. The following takes N=3 as an example, that is, the first CORESET is mapped to 3 carriers.

[0148] Specifically, the configuration information of the first CORESET includes three symbol numbers, for example, the three symbol numbers are (2, 1, 3). The three symbol numbers correspond one-to-one to the index values ​​of the three carriers mapped by the first CORESET, which can be understood as the following possible examples.

[0149] In Example 1, assume that three carriers are arranged in ascending order of index value as carrier #1, carrier #2, and carrier #3. In this case, the number of symbols corresponding to these three carriers is, for example, 2, 1, and 3. That is, the number of symbols corresponding to carrier #1 is 2, the number of symbols corresponding to carrier #2 is 1, and the number of symbols corresponding to carrier #3 is 3.

[0150] In Example 2, assume that three carriers are arranged in descending order of index value: carrier #3, carrier #2, and carrier #1. In this case, the number of symbols corresponding to these three carriers is, for example, 2, 1, and 3. That is, the number of symbols corresponding to carrier #3 is 2, the number of symbols corresponding to carrier #2 is 1, and the number of symbols corresponding to carrier #1 is 3.

[0151] Example three: The network device obtains the sixth correspondence information, which is used to indicate the one-to-one correspondence between 3 symbol numbers and the index values ​​of 3 carriers. For example, the one-to-one correspondence between the number of symbols indicated by the sixth correspondence information and the index value of the carrier can be as shown in Table 6.

[0152] Table 6 One-to-one correspondence between symbol numbers and carrier index values

[0153] As shown in Table 6, the number of symbols corresponding to carrier #1 is 2, the number of symbols corresponding to carrier #3 is 1, and the number of symbols corresponding to carrier #2 is 3.

[0154] It should be noted that the sixth correspondence information mentioned above may be pre-configured by the network device, and the specific indication content of the sixth correspondence information mentioned above is only for illustration and is not limited here.

[0155] In a possible implementation, the interleaving mapping type configuration of the same CORESET resource mapped to N carriers is the same. Detailed content of the interleaving mapping type configuration can be found in the previous text and will not be elaborated here.

[0156] In one possible implementation, the SS resources configured in the first BWP can be configured on N carriers corresponding to the first BWP, each SS resource is associated with a CORESET resource, and the SS resource set corresponding to a CORESET resource can be distributed on N carriers in the cell.

[0157] For example, assume that three SS resources, such as SS1, SS2, and SS3, are configured within the first BWP. This first BWP is mapped to three carriers, such as carrier #1, carrier #2, and carrier #3. These three SS resources are associated with two CORESET resources: SS1 and SS2 are associated with CORESET1, and SS3 is associated with CORESET3. The SS resource set associated with each CORESET resource can be distributed across any one of the N carriers. For example, SS1 can be distributed across carrier #1, SS2 can be distributed across carrier #3, and SS3 can be distributed across carrier #2.

[0158] Optionally, in a possible implementation manner, the configuration information of the first BWP further includes indication information of a modulation and coding scheme-table MCS-table and / or a channel state information resource configuration (CSI-resource).

[0159] Specifically, in one case, the first BWP is mapped to N carriers, and the indication information of the MCS-table and / or the channel state information resource configuration (CSI-resource) are shared for the N carriers, that is, the N carriers are configured with the same indication information of the MCS-table and / or the channel state information resource configuration (CSI-resource). Among them, the indication information of the MCS-table can be included in the RRC signaling, used to instruct the terminal device (such as UE) to configure the MCS-table, for example, indication information #1 is used for indication information #A, and the information #A is used to instruct the UE to adopt MCS-table1 (MCS-table 1), and indication information #2 is information #B, and the information #B is used to instruct the UE to adopt MCS-table2 (MCS-table 2). It should be understood that the above is only an example and this application does not limit this.

[0160] In another case, the first BWP is mapped to N carriers, and parameters corresponding to each carrier are independently configured for each carrier: time domain resource configuration and / or frequency domain resource configuration related parameters.

[0161] Optionally, in a possible implementation, the first configuration information further includes second indication information, where the second indication information is used to indicate deletion of at least one carrier in the first cell. For example, the second indication information may be a downlinkcarrier-ToReleaseList parameter.

[0162] Optionally, in a possible implementation, the first configuration information further includes uplink and downlink frame ratio configuration information of at least one carrier among the M carriers, wherein the uplink and downlink frame ratio configuration information of the carrier refers to the number and position of time slots occupied by the uplink slot and downlink slot of the carrier, respectively.

[0163] Exemplarily, when all M carriers are time division duplex (TDD) carriers, the first configuration information includes uplink and downlink frame ratio configuration information of the M carriers, wherein the uplink and downlink frame ratio configuration information of the carriers is indicated by the tdd-UL-DL-ConfigurationDedicated parameter in the configuration information.

[0164] That is, when all the M carriers are time division duplex (TDD) carriers, the first configuration information includes M tdd-UL-DL-ConfigurationDedicated parameters, which are respectively used to indicate the uplink and downlink frame ratio configuration information of the M carriers.

[0165] Exemplarily, when Q of the M carriers are time division duplex (TDD) carriers, the first configuration information includes uplink and downlink frame ratio configuration information for the Q carriers, where Q ≤ M and Q is a positive integer. The uplink and downlink frame ratio configuration information for the carriers is indicated by the tdd-UL-DL-ConfigurationDedicated parameter in the configuration information.

[0166] That is, when all the Q carriers are time division duplex (TDD) carriers, the first configuration information includes Q tdd-UL-DL-ConfigurationDedicated parameters, which are respectively used to indicate the uplink and downlink frame ratio configuration information of the Q carriers.

[0167] Optionally, in a possible implementation, the first configuration information also includes third indication information of the M carriers, and the third indication information is used to indicate the time slot type of the M carriers, wherein the time slot type can be an uplink slot transmission, a downlink slot transmission, or a slot transmission configured as X.

[0168] Furthermore, for slot transmission configured as X, optionally, the third indication information also includes time slot type indication information. For example, the time slot type indication information can be (slot format indicator, SFI), and the time slot type indication information is used to further indicate the transmission direction of each OFDM symbol in the slot configured as X.

[0169] Optionally, in a possible implementation, the first configuration information further includes fourth indication information, where the fourth indication information is used to indicate deletion of at least one BWP configuration in the first cell. For example, the fourth indication information may be a downlinkBWP-ToReleaseList parameter.

[0170] Optionally, in a possible implementation, the first configuration information further includes fifth indication information, where the fifth indication information is used to indicate the default first active BWP. For example, the fifth indication information may be a firstActiveDownlinkBWP-Id parameter.

[0171] Specifically, when the network side has just configured multiple BWPs for the first cell, if the current network side does not indicate the ID of the currently activated BWP (Active BWP), then one of the multiple BWPs is indicated as the activated BWP according to the fifth indication information to perform data transmission.

[0172] Optionally, in a possible implementation, the first configuration information further includes sixth indication information, where the sixth indication information is used to instruct the terminal device to perform channel quality measurement on the first carrier and report the channel quality measurement result. For example, the sixth indication information may be a csi-MeasConfig parameter.

[0173] Specifically, the csi-MeasConfig parameter is mainly used to configure measurement information. That is, the sixth indication information is used to indicate the configuration of csi-MeasConfig on the first carrier. Further, the sixth indication information is used to instruct the terminal device to perform channel quality measurement on the first carrier and report the channel quality measurement result. The first carrier is any one of the M carriers.

[0174] It should be noted that the selection or determination of the first carrier may be implemented in the following ways:

[0175] In a possible implementation manner, the network device sends an RRC message, where the RRC message includes an index value of the first carrier.

[0176] In another possible implementation, the first carrier may be predefined by a protocol. For example, the first carrier may be the carrier with the largest index value among the M carriers, or the first carrier may be the carrier with the smallest index value among the M carriers, or the first carrier may be the carrier with the highest frequency among the M carriers, or the first carrier may be the carrier with the lowest frequency among the M carriers.

[0177] It should be understood that the above method for determining the first carrier is only an example and is not limited to this embodiment of the present application.

[0178] According to the above technical solution, multiple carriers can be configured for a single cell, thereby improving user experience and further reducing the complexity of managing multiple downlink carriers.

[0179] It should be understood that the size of the serial numbers of the above processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0180] It should also be understood that in the various embodiments of the present application, unless otherwise specified or there is a logical conflict, the terms and / or descriptions between different embodiments are consistent and can be referenced to each other, and the technical features in different embodiments can be combined to form new embodiments according to their internal logical relationships.

[0181] It should also be understood that in some of the above embodiments, the devices in the existing network architecture are mainly used as examples for illustrative description (such as network devices, terminal devices, etc.), and it should be understood that the embodiments of the present application are not limited to the specific form of the devices. For example, devices that can achieve the same functions in the future are applicable to the embodiments of the present application.

[0182] It is understandable that in the above-mentioned various method embodiments, the methods and operations implemented by devices (such as network devices, terminal devices) can also be implemented by components of the devices (such as chips or circuits).

[0183] The communication method provided by the embodiments of the present application is described in detail above with reference to Figures 1 to 8 . The communication method described above is primarily described from the perspective of interaction between a terminal device and a network device. It is understood that, in order to implement the above functions, the terminal device and the network device include hardware structures and / or software modules corresponding to the respective functions.

[0184] It is understood that in order to implement the functions in the above embodiments, the terminal devices and network devices include hardware structures and / or software modules corresponding to the execution of each function. Those skilled in the art should readily appreciate that, in combination with the units and method steps of each example described in the embodiments disclosed in this application, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in hardware or in a manner driven by computer software depends on the specific application scenario and design constraints of the technical solution.

[0185] Figures 9 and 10 are schematic block diagrams of possible communication devices provided in embodiments of the present application. These communication devices can be used to implement the functions of the network device or terminal device in the above method embodiments, and thus can also achieve the beneficial effects possessed by the above method embodiments. In the embodiments of the present application, the communication device can be the terminal 120 as shown in Figure 1, or the network device 110 as shown in Figure 1, or a module (such as a chip) applied to a terminal or network device.

[0186] As shown in Figure 9, communication device 900 includes a transceiver unit 910. Transceiver unit 910 can implement corresponding communication functions and can also be referred to as a communication interface or communication unit. Optionally, communication device 900 also includes a processing unit 920 for performing data processing. Communication device 900 is used to implement the functions of the network device or terminal device in the method embodiment shown in Figure 6.

[0187] When the communication apparatus 900 is used to implement the function of the network device in the method embodiment shown in FIG6 , the processing unit 920 is used to determine the first configuration information, and the transceiver unit 910 is used to send the first configuration information.

[0188] When the communication device 900 is used to implement the functions of the terminal device in the method embodiment shown in Figure 6, the transceiver unit 910 is used to receive first configuration information, and the processing unit 920 is used to configure M carriers for the first cell according to the first configuration information.

[0189] For a more detailed description of the transceiver unit 910 and the processing unit 920, as well as the meaning of terms such as the first configuration information, please refer to the description of the method embodiment shown in FIG6 .

[0190] As shown in Figure 10, the communication device 1000 includes a processor 1010 and an interface circuit 1020. The processor 1010 and the interface circuit 1020 are coupled to each other. It is understood that the interface circuit 1020 can be a transceiver or an input / output interface. Optionally, the communication device 1000 may also include a memory 1030 for storing instructions executed by the processor 1010, or storing input data required by the processor 1010 to execute instructions, or storing data generated after the processor 1010 executes instructions. Sometimes, the interface circuit 1020 can also be understood as a part of the processor 1010, in which case the communication device 1000 includes the processor 1010.

[0191] When the communication device 1000 is used to implement the method shown in FIG. 6 , the processor 1010 is used to implement the functions of the processing unit 920 , and the interface circuit 1020 is used to implement the functions of the transceiver unit 910 .

[0192] When the above-mentioned communication device is a chip applied to a terminal, the terminal chip implements the functions of the terminal in the above-mentioned method embodiment. The terminal chip receives the first configuration information from the network device, which can be understood as the first configuration information being first received by other modules in the terminal (such as a radio frequency module or antenna) and then sent to the terminal chip by these modules. The terminal chip sends the first configuration information to the network device, which can be understood as the first configuration information being first sent to other modules in the terminal (such as a radio frequency module or antenna) and then sent to the network device by these modules.

[0193] When the communication device is a chip used in a network device, the network device chip implements the functions of the network device in the above-mentioned method embodiment. When the network device chip sends the first configuration information, it can be understood that the first configuration information is first sent by other modules in the network device (such as a radio frequency module or antenna). When the network device chip sends the first configuration information to the terminal, it can be understood that the first configuration information is first sent to other modules in the network device (such as a radio frequency module or antenna), and then these modules send it to the terminal.

[0194] In this application, when entity A sends information to entity B, it can be done directly from A to B or indirectly through another entity. Similarly, when entity B receives information from entity A, it can be done directly from entity B or indirectly through another entity. Entities A and B herein can be RAN nodes or terminals, or modules within a RAN node or terminal. The sending and receiving of information can be information exchange between a RAN node and a terminal, for example, between a base station and a terminal; the sending and receiving of information can also be information exchange between two RAN nodes, for example, between a CU and a DU; the sending and receiving of information can also be information exchange between different modules within a device, for example, between a terminal chip and other modules in the terminal, or between a base station chip and other modules within the base station.

[0195] It is understood that the processor in the embodiments of the present application may be a central processing unit (CPU), or may be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. The general-purpose processor may be a microprocessor or any conventional processor.

[0196] The method steps in the embodiments of the present application can be implemented in hardware or in software instructions that can be executed by a processor. The software instructions can be composed of corresponding software modules, and the software modules can be stored in random access memory, flash memory, read-only memory, programmable read-only memory, erasable programmable read-only memory, electrically erasable programmable read-only memory, registers, hard disk, mobile hard disk, CD-ROM or any other form of storage medium well known in the art. An exemplary storage medium is coupled to the processor so that the processor can read information from the storage medium and write information to the storage medium. The storage medium can also be an integral part of the processor. The processor and storage medium can be located in an ASIC. In addition, the ASIC can be located in a base station or a terminal. The processor and storage medium can also exist in a base station or a terminal as discrete components.

[0197] In the above embodiments, all or part of the embodiments may be implemented using software, hardware, firmware, or any combination thereof. When implemented using software, all or part of the embodiments may be implemented in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are performed in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user device, or other programmable device. The computer program or instructions may be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another. For example, the computer program or instructions may be transferred from one website, computer, server, or data center to another website, computer, server, or data center via wired or wireless means. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center that integrates one or more available media. The available medium may be a magnetic medium, such as a floppy disk, hard disk, or magnetic tape; an optical medium, such as a digital video disk; or a semiconductor medium, such as a solid-state drive. The computer-readable storage medium may be a volatile or nonvolatile storage medium, or may include both volatile and nonvolatile types of storage media.

[0198] In the above-mentioned embodiments, unless otherwise specified or provided, the terms and / or descriptions between different embodiments are consistent and can be referenced to each other. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationships.

[0199] "At least one" in this document means one or more. "More than one" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. In the text description of this application, the character " / " generally indicates that the previous and next associated objects are in an "or" relationship; in the formula of this application, the character " / " indicates that the previous and next associated objects are in a "division" relationship. "Including at least one of A, B and C" can mean: including A; including B; including C; including A and B; including A and C; including B and C; including A, B and C.

[0200] It should be understood that in the various embodiments of the present application, the first, second, and various numerical numbers are merely distinctions for ease of description and are not intended to limit the scope of the embodiments of the present application. The order of the sequence numbers of the above-mentioned processes does not imply a specific order of execution; the order of execution of each process should be determined by its function and internal logic.

Claims

1. A cell configuration method, characterized in that: include: Determine first configuration information, where the first configuration information includes first indication information, where the first indication information is used to indicate that M carriers are configured for the first cell, where the M carriers are used to transmit downlink data, where M is greater than or equal to 2 and M is an integer; Send the first configuration information.

2. A cell configuration method, characterized in that: include: Receive first configuration information, where the first configuration information includes first indication information, where the first indication information is used to indicate that M carriers are configured for the first cell, where the M carriers are used to transmit downlink data, where M is greater than or equal to 2 and is an integer; The M carriers are configured for the first cell according to the first configuration information.

3. The method according to claim 1 or 2, characterized in that The first configuration information also includes configuration information of a first bandwidth part BWP, where the frequency domain resources of the first BWP are frequency domain resources in N carriers among the M carriers, where N≤M, and N is a positive integer.

4. The method according to claim 3, characterized in that The configuration information of the first BWP further includes N pieces of first resource information, and the N pieces of first resource information correspond one-to-one to the N carriers.

5. The method according to claim 4, characterized in that The first resource information includes at least one of the following: Subcarrier spacing SCS information, cyclic prefix type information, frequency domain position information, and control resource set CORESET information.

6. The method according to any one of claims 3 to 5, characterized in that The configuration information of the first BWP also includes indication information of a modulation and coding scheme-table MCS-table and / or channel state information resource configuration.

7. The method according to any one of claims 1 to 6, characterized in that The first configuration information further includes second indication information, where the second indication information is used to instruct deletion of at least one carrier in the first cell.

8. The method according to any one of claims 1 to 7, characterized in that The first configuration information also includes uplink and downlink frame ratio configuration information of at least one carrier among the M carriers.

9. A communication device, characterized in that: The method comprises modules or units for executing the method according to any one of claims 1 to 8.

10. A communication device, characterized in that: The method comprises a processor and an interface circuit, wherein the interface circuit is used to receive signals from other communication devices outside the communication device and transmit them to the processor or send signals from the processor to other communication devices outside the communication device, and the processor is used to implement the method as claimed in any one of claims 1 to 8 through a logic circuit or executing code instructions.

11. A chip, characterized in that: The system comprises a processor coupled to a memory, the memory being used to store a computer program, and the processor being used to execute the computer program stored in the memory to implement the method according to any one of claims 1 to 8.

12. A computer-readable storage medium, characterized in that The storage medium stores a computer program or instruction. When the computer program or instruction is executed by the communication device, the method according to any one of claims 1 to 8 is implemented.

13. A computer program product, characterized in that The invention comprises a computer program, which implements the method according to any one of claims 1 to 8 when the computer program is executed.

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