Wireless communication method and apparatus, device, and storage medium

Abstract

A wireless communication method and apparatus, a device, and a storage medium, relating to the technical field of communications. The method comprises: a terminal device receives first DCI, the first DCI comprising first indication information, and the first indication information being used for indicating whether a first downlink channel or signal carries indication information for determining a Type0-PDCCH CSS of a first cell (510). The terminal device receives DCI sent by a network device, and acquires a configuration of the Type0-PDCCH CSS on the basis of the DCI. Thus, in a system message update process, the configuration of the Type0-PDCCH CSS can be acquired in different situations, so that the terminal device can receive, on the basis of the configuration, an SIB1 sent by the network device, thereby improving the reliability and success rate of a terminal access process.

Description

Wireless communication methods, apparatus, devices and storage media Technical Field

[0001] This application relates to the field of communication technology, and in particular to a wireless communication method, apparatus, device, and storage medium. Background Technology

[0002] With the development of wireless communication technology, the demand for Network Energy Saving (NES) has emerged. Network energy saving is of great significance for environmental sustainability, reducing environmental impact (reducing greenhouse gas emissions), and saving operating costs.

[0003] In the process of a terminal device requesting SIB1 (System Information Block 1) transmission from an NES Cell, the terminal device first needs to listen to the RAR (Random Access Response) sent by the NES base station through the NES Cell. This RAR is the RAR corresponding to the PRACH (Physical Random Access Channel) sent by the terminal device. Then, it listens to the SIB1 sent by the NES base station through the NES Cell. In the prior art, the RAR PDCCH (Physical Downlink Control Channel) configuration information is configured on the downlink BWP (Bandwidth Part) of the NES Cell.

[0004] During the OD-SIB1 (On-demand SIB1) process, if the downlink BWP configuration of the NES cell in SIB1 has not yet been obtained, according to the existing technical solution, the terminal device cannot determine the RAR PDCCH configuration information of the NES cell, which will result in the terminal device being unable to receive SIB1.

[0005] Summary of the Invention

[0006] This application provides a wireless communication method, apparatus, device, and storage medium. The technical solutions provided by this application are as follows.

[0007] According to one aspect of the embodiments of this application, a wireless communication method is provided, the method being executed by a terminal device, the method comprising: receiving a first DCI (Downlink Control Information), the first DCI including first indication information, the first indication information being used to indicate whether a first downlink channel or signal carries indication information for determining a Type 0-PDCCH (Type 0 Physical Downlink Control Channel) CSS (Common Search Space) of a first cell, wherein the first downlink channel or signal is the first DCI or a PDSCH (Physical Downlink Shared Channel) scheduled by the first DCI, the Type 0-PDCCH CSS being determined based on at least one of the following: second indication information, the second indication information being used to determine the CORESET0 of the first cell; third indication information, the third indication information being used to determine the search space set 0 of the first cell; and fourth indication information, the fourth indication information being used to determine a first offset value.

[0008] According to one aspect of the embodiments of this application, a wireless communication method is provided, the method being performed by a network device, the method comprising: transmitting a first DCI, the first DCI including first indication information, the first indication information being used to indicate whether a first downlink channel or signal carries indication information for determining a Type 0-PDCCH CSS of a first cell, wherein the first downlink channel or signal is the first DCI or a PDSCH scheduled by the first DCI, the Type 0-PDCCH CSS being determined based on at least one of the following: second indication information, the second indication information being used to determine the CORESET0 of the first cell; third indication information, the third indication information being used to determine the search space set 0 of the first cell; and fourth indication information, the fourth indication information being used to determine a first offset value.

[0009] According to one aspect of the embodiments of this application, a wireless communication method is provided, the method being executed by a terminal device or a network device, the method comprising: determining a first CORSET corresponding to a first cell, the first CORSET being used to receive a RAR from the first cell.

[0010] According to one aspect of the embodiments of this application, a wireless communication apparatus is provided, the apparatus comprising: a receiving module, configured to receive a first DCI, the first DCI including first indication information, the first indication information being configured to indicate whether a first downlink channel or signal carries indication information for determining a Type 0-PDCCH CSS of a first cell, wherein the first downlink channel or signal is the first DCI or a PDSCH scheduled by the first DCI, and the Type 0-PDCCH CSS is determined based on at least one of the following: second indication information, the second indication information being configured to determine the CORESET0 of the first cell; third indication information, the third indication information being configured to determine the search space set 0 of the first cell; and fourth indication information, the fourth indication information being configured to determine a first offset value.

[0011] According to one aspect of the embodiments of this application, a wireless communication apparatus is provided, the apparatus comprising: a transmitting module, configured to transmit a first DCI, the first DCI including first indication information, the first indication information being configured to indicate whether a first downlink channel or signal carries indication information for determining a Type 0-PDCCH CSS of a first cell, wherein the first downlink channel or signal is the first DCI or a PDSCH scheduled by the first DCI, and the Type 0-PDCCH CSS is determined based on at least one of the following: second indication information, the second indication information being configured to determine the CORESET0 of the first cell; third indication information, the third indication information being configured to determine the search space set 0 of the first cell; and fourth indication information, the fourth indication information being configured to determine a first offset value.

[0012] According to one aspect of the embodiments of this application, a wireless communication device is provided, the device comprising: a processing module, configured to determine a first CORSET corresponding to a first cell, the first CORSET being configured to receive a RAR from the first cell.

[0013] According to one aspect of the embodiments of this application, a communication device is provided, the communication device including a processor and a memory, the memory storing a computer program, the processor executing the computer program to implement the wireless communication method executed by the terminal device or the wireless communication method executed by the network device.

[0014] According to one aspect of the embodiments of this application, a computer-readable storage medium is provided, the storage medium storing a computer program, the computer program being executed by a processor to implement the wireless communication method executed by the terminal device or the wireless communication method executed by the network device.

[0015] According to one aspect of the embodiments of this application, a chip is provided, the chip including programmable logic circuits and / or program instructions, which, when the chip is running, are used to implement the wireless communication method executed by the aforementioned terminal device, or to execute the wireless communication method executed by the aforementioned network device.

[0016] According to one aspect of the embodiments of this application, a computer program product is provided, the computer program product including computer instructions stored in a computer-readable storage medium, wherein a processor reads from the computer-readable storage medium and executes the computer instructions to implement the wireless communication method executed by the terminal device or to execute the wireless communication method executed by the network device.

[0017] The technical solutions provided in this application embodiment may have the following beneficial effects:

[0018] By receiving the DCI sent by the network device through the terminal device, and obtaining the configuration of Type0-PDCCH CSS based on the DCI, the configuration of Type0-PDCCH CSS can be obtained under different circumstances during the system message update process. This allows the terminal device to receive SIB 1 sent by the network device according to the configuration, thereby improving the reliability and success rate of the terminal access process. Attached Figure Description

[0019] Figure 1 is a schematic diagram of the architecture of a communication system provided in an embodiment of this application;

[0020] Figure 2 is a schematic diagram of the architecture of a communication system provided in another embodiment of this application;

[0021] Figure 3 is a schematic diagram of the architecture of a communication system provided in another embodiment of this application;

[0022] Figure 4 is a schematic diagram of CORSET frequency domain resource configuration provided in an embodiment of this application;

[0023] Figure 5 is a flowchart of a wireless communication method provided in an embodiment of this application;

[0024] Figure 6 is a flowchart of a wireless communication method provided in another embodiment of this application;

[0025] Figure 7 is a schematic diagram of determining the downlink BWP based on UL BWP configuration according to an embodiment of this application;

[0026] Figure 8 is a schematic diagram of determining the RA control resource set based on UL BWP configuration according to an embodiment of this application;

[0027] Figure 9 is a block diagram of a wireless communication device provided in an embodiment of this application;

[0028] Figure 10 is a block diagram of a wireless communication device provided in another embodiment of this application;

[0029] Figure 11 is a block diagram of a wireless communication device provided in another embodiment of this application;

[0030] Figure 12 is a schematic diagram of the structure of a communication device provided in an embodiment of this application. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0032] The network architecture and business scenarios described in the embodiments of this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided in the embodiments of this application. As those skilled in the art will know, with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

[0033] The technical solutions of this application embodiment can be applied to various communication systems, such as: Global System for Mobile Communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system, New Radio (NR) system, evolution of NR system, LTE-based access to unlicensed spectrum (LTE-U) system, NR-based access to unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), and Wireless Fidelity (WF). Fidelity (WiFi), 5th-Generation (5G) communication systems, 6th-Generation (6G) communication systems, or other communication systems.

[0034] Traditional communication systems typically support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communication but also, for example, device-to-device (D2D) communication, machine-to-machine (M2M) communication, machine-type communication (MTC), vehicle-to-vehicle (V2V) communication, or vehicle-to-everything (V2X) communication. The embodiments of this application can also be applied to these communication systems.

[0035] The communication system in this application embodiment can be applied to carrier aggregation (CA) scenarios, dual connectivity (DC) scenarios, and standalone (SA) network deployment scenarios.

[0036] The communication system in this application embodiment can be applied to unlicensed spectrum, wherein unlicensed spectrum can also be considered as shared spectrum; or, the communication system in this application embodiment can also be applied to licensed spectrum, wherein licensed spectrum can also be considered as non-shared spectrum.

[0037] Communication system scenarios include non-terrestrial networks (NTN) and terrestrial networks (TN). NTN typically uses satellite communication to provide services to terrestrial users. Current NTN systems include NR-NTN and IoT-NTN systems, and other NTN systems may be included in the future.

[0038] For example, Figure 1 is a schematic diagram of the architecture of a communication system provided in an embodiment of this application. As shown in Figure 1, the communication system 100 may include a network device 110, which may be a device that communicates with a terminal device 120. The network device 110 can provide communication coverage for a specific geographical area and can communicate with terminal devices located within that coverage area.

[0039] Figure 1 exemplarily illustrates a network device 110 and two terminal devices 120. In some embodiments of this application, the communication system 100 may include multiple network devices and each network device may include other numbers of terminal devices within its coverage area. This application does not limit this aspect.

[0040] For example, Figure 2 is a schematic diagram of another communication system architecture provided in an embodiment of this application. Referring to Figure 2, the communication system may include a terminal device 201 and a satellite 202, and wireless communication is possible between the terminal device 201 and the satellite 202. The network formed between the terminal device 201 and the satellite 202 may also be called an NTN. In the architecture of the communication system shown in Figure 2, the satellite 202 may have the function of a base station, and the terminal device 201 and the satellite 202 can communicate directly. In this system architecture, the satellite 202 can be referred to as a network device. In some embodiments of this application, the communication system may include multiple satellites 202, and the coverage area of ​​each network satellite 202 may include other numbers of terminal devices; this application does not limit this aspect.

[0041] For example, Figure 3 is a schematic diagram of another communication system architecture provided in an embodiment of this application. Referring to Figure 3, the communication system includes a terminal device 301, a satellite 302, and a base station 303. Wireless communication is possible between the terminal device 301 and the satellite 302, and communication is possible between the satellite 302 and the base station 303. The network formed between the terminal device 301, the satellite 302, and the base station 303 can also be called an NTN. In the architecture of the communication system shown in Figure 3, the satellite 302 may not have the function of a base station, and communication between the terminal device 301 and the base station 303 requires relaying through the satellite 302. In this system architecture, the base station 303 can be referred to as a network device. In some embodiments of this application, the communication system may include multiple base stations 303, each base station 303 can communicate with one or more satellites 302, and the coverage area of ​​each satellite 302 may include other numbers of terminal devices; this application does not limit this aspect.

[0042] In future communication systems such as B5G (Beyond 5G) or 6G, there may also be distributed multiple-input multiple-output (MIMO, also known as distributed antenna system) scenarios and / or massive multiple-input multiple-output (MIMO, also known as massive antenna matrix system) scenarios. In some cases, distributed MIMO and / or massive MIMO can also support cell-free or UE-centric network deployment scenarios. It should be understood that the above scenarios also apply to TN and / or NTN.

[0043] Understandably, with the development of communication technology, future communication systems such as B5G or 6G can support TN or NTN, as well as network deployment scenarios centered on base stations or terminal-centered.

[0044] The terminal device mentioned in the embodiments of this application may refer to UE (User Equipment), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, wireless communication device, user agent, or user device. Optionally, the terminal device may also be a cellular phone, cordless phone, SIP (Session Initiation Protocol) phone, WLL (Wireless Local Loop) station, PDA (Personal Digital Assistant), handheld device with wireless communication function, computing device or other processing device connected to a wireless modem, vehicle-mounted device, wearable device, terminal device in 5GS (5th Generation System), or terminal device in the future evolved PLMN (Public Land Mobile Network), etc., and the embodiments of this application are not limited thereto. For ease of description, the devices mentioned above are collectively referred to as terminal devices. In the embodiments of this application, "terminal device" and "UE" are usually used interchangeably, but those skilled in the art will understand that they can express the same meaning.

[0045] The network devices mentioned in this application embodiment can be access network devices, located on the ground or on a satellite. An access network device is a device deployed in an access network to provide wireless communication functions for terminal devices. Access network devices can include various forms of macro base stations, micro base stations, relay stations, access points, etc. In systems employing different wireless access technologies, the names of devices with access network device functions may differ; for example, in a 5G NR system, they are called gNodeB or gNB. As communication technologies evolve, the name "access network device" may change. For ease of description, in this application embodiment, the aforementioned devices providing wireless communication functions for terminal devices are collectively referred to as access network devices. Optionally, a communication relationship can be established between the terminal device and the core network device through the access network device.

[0046] The "5G NR system" in this application embodiment can also be referred to as a 5G system or an NR system, but those skilled in the art will understand its meaning. The technical solutions described in this application embodiment can be applied to LTE systems, 5G NR systems, and subsequent evolution systems of 5G NR systems (such as 6G systems), as well as other communication systems such as NB-IoT (Narrow Band Internet of Things) systems. This application does not limit these applications.

[0047] In this embodiment, the network device can provide services to a cell. The terminal device communicates with the network device through the transmission resources (e.g., frequency domain resources, or spectrum resources) on the carrier used by the cell. The cell can be the cell corresponding to the network device (e.g., a base station). The cell can belong to a macro base station or to a base station corresponding to a small cell. The small cell can include: metro cell, micro cell, pico cell, femto cell, etc. These small cells have the characteristics of small coverage area and low transmission power, and are suitable for providing high-speed data transmission services.

[0048] Before introducing the technical solution of this application, some related technical knowledge involved in this application will be introduced and explained. The following related technologies are optional solutions and can be arbitrarily combined with the technical solutions of the embodiments of this application, all of which fall within the protection scope of the embodiments of this application. The embodiments of this application include at least some of the following contents.

[0049] 1. Network energy saving

[0050] Network energy efficiency is crucial for environmental sustainability, reducing environmental impact (such as greenhouse gas emissions), and saving operating costs. As 5G becomes more widespread across industries and geographic regions, the need to support very high data transmission rates to handle more advanced services and applications (such as XR) necessitates denser network deployments, utilizing more antennas, greater bandwidth, and more frequency bands. Given the environmental impact of 5G, there is a need to develop controlled, new solutions to enhance network energy efficiency.

[0051] Energy consumption has become a critical component of operators' operational expenditure (OPEX). According to a report by the GSMA (Global System for Mobile Communications Association), energy costs for mobile networks account for approximately 23% of total OPEX. Most energy consumption originates from the radio access network, more specifically from the active antenna unit (AAU), with data centers and fiber optic transmission accounting for a smaller share. The power consumption of a single radio access can be divided into two parts: the dynamic part includes only the power consumption when data is being transmitted or received; the static part includes the power consumption necessary for the necessary operation of the radio access equipment at all times, including when no data is being transmitted or received.

[0052] Therefore, based on the above objectives, it is necessary to research and develop network energy consumption models, KPIs (Key Performance Indicators), and evaluation methods on the network device side to identify and study network energy-saving technologies in target deployment scenarios. The already defined power consumption models on the terminal device side can serve as a reference. This research should focus on how to achieve more efficient dynamic and / or semi-static operation, and consider one or more network energy-saving technologies applied to the time, frequency, spatial, and power domains, combined with potential terminal device feedback support, potential terminal device auxiliary information, and information exchange or coordination technologies between network interfaces, to achieve more granular adaptive data transmission and / or reception.

[0053] It is worth noting that this study not only assesses potential network energy-saving gains, but also needs to evaluate and balance the impact on network and user performance by observing KPIs such as spectral efficiency, capacity, User Perceived Throughput (UPT), latency, UE power consumption, complexity, handover performance, call drop rate, initial access performance, and SLA (Service Level Agreement) security-related KPIs. This study should avoid having a significant impact on the aforementioned KPIs.

[0054] 2. Information carried by the PBCH (Physical Broadcast Channel) in the NR system

[0055] In the NR system, the PBCH carries information including the MIB (Master Information Block), the MIB message type indicator, and PBCH information bits. The MIB contains 23 bits of information, as shown in Table 1, plus a 1-bit MIB message type indicator, meaning the message generated by the higher layers includes A = 24 bits. This A-bit information is the first A bits of information carried in the PBCH, denoted as a0, a1, ..., a A-1 .

[0056] Table 1: MIB Information

[0057] The above SIB1PDCCH configuration information includes 4 bits of configuration information for determining CORSET0 (control resource set 0) and 4 bits of configuration information for determining search space set 0.

[0058] In addition, the physical layer will generate an extra 8 bits of PBCH information, denoted as a.A a A+1 , ..., a A+7 In other words, without considering CRC (Cyclic Redundancy Check), PBCH consists of 32 information bits.

[0059] Among them, a A a A+1 a A+2 a A+3 These are used to represent the 4th, 3rd, 2nd, and 1st least significant bits (LSBs) of the SFN, respectively.

[0060] a A+4 This is a half-frame indicator bit, used to indicate whether the SSB (Synchronization Signal Block) burst set corresponds to the first or second half-frame.

[0061] For the licensed spectrum of FR1 (Frequency Range), a A+5 Used to indicate k SSB The most significant bit (MSB). A+6 and a A+7 Reserved bits.

[0062] For FR2, a A+5 a A+6 a A+7 These are used to represent the 6th, 5th, and 4th bits of the SSB index, respectively.

[0063] 3.k SSB Instruction information

[0064] k SSB The indication information is used to indicate N SSB-CRB The number of subcarriers offset between subcarrier 0 in the spectrum and subcarrier 0 in the SSB. Where, for the FR1 licensed spectrum, k SSB Including 5 bits, k SSB The 4-bit LSB in the MIB is indicated by the SSB subcarrier offset in the MIB, k SSB The MSB in the PBCH information bits is a A+5 Indicated. For FR2, k SSB Includes 4 bits, indicated by the SSB subcarrier offset in the MIB. For FR1 unlicensed spectrum, when k SSB When the indicated value is less than 24, k SSBThe LSB in the LSB is also used to indicate the QCL (Quasi Co-Location) hypothesis indication information Q.

[0065] For FR1, when k SSB When k is greater than or equal to 24 and less than or equal to 29, or, for FR2, when k SSB When the value is greater than or equal to 12 and less than or equal to 13, the UE can be based on k. SSB The value of determines the GSCN (Global Synchronization Channel Number) of the nearest SSB in the corresponding frequency direction. This other SSB may be associated with the Type0-PDCCH CSS set (Common Search Space set). In other words, the UE can determine that the current SSB is not associated with the Type0-PDCCH CSS set.

[0066] For FR1, when k SSB When k equals 30, or, for FR2, when k SSB When the value is 14, it is a reserved state.

[0067] N SSB-CRB It is obtained based on the higher-level parameter offsetToPointA. For the first SSB (e.g., any one carrying k...), SSB The terminal device should assume N (SSB of the instruction information). SSB-CRB The center of subcarrier 0 coincides with the center of subcarrier 0 of the first CRB (Common Resource Block). The SCS (Subcarrier Spacing) of the first CRB is the same as that of SIB1. The first CRB overlaps with the subcarrier 0 of the first RB of the first SSB.

[0068] For cases where the SSB's SCS is 15kHz or 30kHz, such as for an SSB in the FR1 band, k SSB and N SSB-CRB The corresponding SCS is 15kHz.

[0069] For cases where the SSB's SCS is 120kHz or 240kHz, such as for an SSB in the FR2 band, k SSB The corresponding SCS is the same as that of SIB1, N SSB-CRB The corresponding SCS is 60kHz.

[0070] 4. Control resource set configuration information

[0071] In NR systems, the set of resources used to transmit PDCCH is called the control-resource set (CORESET). A CORESET can include N in the frequency domain. RB There are N RBs in the time domain. symb There are several symbols. Among them, the time-domain resource N... symb This is configured by network devices through higher-level parameters such as duration, with values ​​ranging from 1 to 3. Frequency domain resource N RB This configuration is also achieved by network devices through higher-level parameters such as frequencyDomainResources, using a bit-mapped approach. Specifically, the frequencyDomainResources configuration information, which controls the resource set, comprises 45 bits. Each bit corresponds to one PRB group, and each PRB group includes 6 RBs. A BWP can include multiple non-overlapping and consecutive PRB groups, and there is a one-to-one mapping between the bit stream and the PRB groups included in the BWP. The first bit corresponds to the first PRB group within a BWP. The starting position of this first PRB group is determined based on the starting position Nstart of the BWP; that is, the index of the first PRB in this first PRB group is 6*ceil(Nstart / 6), where ceil represents rounding up. If the bit value is 1, the corresponding PRB group is configured as CORESET; if the bit value is 0, the corresponding PRB group is not configured as CORESET.

[0072] Figure 4 shows an example of CORESET frequency domain resource configuration. The frequency domain resource configuration information frequencyDomainResources includes a bit stream containing 0s and 1s. The PRB group corresponding to 1 is configured as an RB in CORESET, as shown by the dotted shading in the figure; the PRB group corresponding to 0 is not configured as an RB in CORESET.

[0073] 5. Paging

[0074] The DCI format 1_0 using P-RNTI (Paging-Radio Network Temporary Identifier) ​​scrambling includes two information fields related to short messages: a Short Messages Indicator field and a Short Messages field. The Short Messages Indicator field contains 2 bits, used to indicate the information shown in Table 2; the Short Messages field contains 8 bits, used to indicate the information shown in Table 3. The Short Messages field is reserved in the DCI only for paging message scheduling information and, if TRS (Tracking Reference Signal) availability is configured.

[0075] Table 2: Short Message Indicator Fields

[0076] Table 3: Short Message Domain

[0077] 6. Procedure for UE to request SIB 1 transmission in NES cell

[0078] • The UE obtains the uplink wake-up signal (WUS) configuration of the NES Cell through Cell A.

[0079] ■ When the UE obtains the WUS configuration of the NES cell through Cell A, it can be determined that the NES cell supports OD-SIB1.

[0080] ■ UL WUS configuration is used to determine at least one of the following: NES cell information associated with UL WUS configuration, WUS transmission information, RAR PDCCH configuration information, and SIB1PDCCH configuration information (i.e., configuration information of CORSET0 and search space set 0).

[0081] ■ NES cell information includes the NES cell identifier and the ARFCN value, where the ARFCN value is used to indicate the ARFCN (Absolute Radio Frequency Channel Number) of the SSB of the NES cell.

[0082] ■WUS transmission information includes at least one of the following: NES uplink cell configuration information, SIB1 request configuration information.

[0083] ○ NES uplink cell configuration information includes at least one of the following: frequency band list (used to determine the frequency band to which the NES uplink carrier belongs, e.g., frequencyBandList), absolute frequency point A (indicating the frequency domain position of the first subcarrier of reference CRB0, e.g., absoluteFrequencyPointA), carrier offset value (indicating the offset value between the first subcarrier of the NES uplink carrier and absolute frequency point A, i.e., the number of subcarriers in the interval, e.g., offsetToCarrier), and uplink SCS (indicating the SCS corresponding to the carrier offset value, e.g., ULSubCarrierSpacing).

[0084] ○ The SIB1 request configuration information includes at least one of the following: SSB power information (e.g., ss-PBCH-BlockPower), SSB burst information (e.g., SSB-positionInBurst), TDD (Time Division Duplexing) pattern configuration information (e.g., tdd-UL-DL-ConfigurationCommon), SSB RSRP (Reference Signal Receiving Power) threshold (e.g., rsrp-ThresholdSSB), PRACH root sequence index (e.g., prach-RootSequenceIndex), Msg1SCS (e.g., msg1-SubcarrierSpacing), restriction set configuration (used to determine the cyclic shift set corresponding to the PRACH sequence, e.g., restrictedSetConfig), RACH opportunities for requesting SIB1 (e.g., rach-OccasionsSIB1), period for requesting SIB1 (e.g., sib1-RequestPeriod), and resources for requesting SIB1 (e.g., sib1-RequestResources).

[0085] ■ RAR PDCCH configuration information includes: RA control resource set configuration information (e.g., controlResourceSet) and RA search space set configuration information (e.g., search space set period, time slot, aggregation level, etc.).

[0086] ■The SIB1PDCCH configuration information includes: configuration information for control resource set 0 (controlResourceSetZero) and configuration information for search space set 0 (searchSpaceZero).

[0087] ●The UE detects the SSB of the NES Cell based on the UL WUS configuration (NES cell identifier and ARFCN value).

[0088] ■Since SIB1 in an NES cell is based on UE-requested transmission, access by legacy UEs should be avoided. Correspondingly, when SSB in an NES cell is transmitted on a sync raster, for FR1, k in the SSB... SSB The value is greater than 23, or, for FR2, k in SSB. SSB The value is greater than 13.

[0089] ● Upon detecting an SSB, a UL WUS (PRACH) is sent according to the UL WUS resource (PRACH resource) configured for the NES Cell in the UL WUS configuration. This PRACH is used to request SIB1 from the NES Cell.

[0090] • Listen for and / or receive the random access response (RAR) corresponding to PRACH via NES Cell

[0091] ■ If the UL WUS configuration includes configuration information for the RAR search space set, then listen for and / or receive the RAR corresponding to the PRACH based on the configuration information for the RAR search space set.

[0092] ■ If the UL WUS configuration does not include the configuration information for the RAR search space set, then the RAR is received based on the configuration information for search space set 0.

[0093] ● Listening to and / or receiving SIB1 from the NES Cell via the NES Cell

[0094] ■ Listen to and / or receive SIB1 from the NES Cell according to the SIB1PDCCH configuration information.

[0095] ■ SIB1PDCCH configuration information can be obtained through at least one of the following methods: UL WUS configuration, SIB1PDCCH configuration in SSB, or configuration in RAR.

[0096] ■ For example, if the SSB in the NES cell is on the synchronization grid and for FR1, k SSB Not equal to 30, or for FR2, k SSB If it is not equal to 14, then the SIB1PDCCH configuration information is configured through UL WUS.

[0097] Please refer to Figure 5, which shows a flowchart of a wireless communication method provided in one embodiment of this application. This method can be applied to the network architectures shown in Figures 1 to 3, as well as other network architectures. As shown in Figure 5, the method may include the following step 510:

[0098] Step 510: The terminal device receives a first DCI, which includes first indication information. The first indication information is used to indicate whether the first downlink channel or signal carries indication information for determining the Type 0-PDCCH CSS of the first cell.

[0099] In some embodiments, the network device sends a first DCI, such as when the network device sends a first DCI to a terminal device, and the terminal device receives the first DCI sent by the network device. In some embodiments, the network device is a network device of a first cell, such as a base station of the first cell.

[0100] In some embodiments, the first cell can be any cell, such as any TN cell or NTN cell. Optionally, the first cell can be an NES cell.

[0101] In some embodiments, the first downlink channel or signal is a first DCI. First indication information is used to indicate whether the first DCI carries indication information for determining the Type 0-PDCCH CSS of the first cell.

[0102] In some embodiments, the first downlink channel or signal is a PDSCH scheduled by a first DCI. The first indication information is used to indicate whether the PDSCH scheduled by the first DCI carries indication information for determining the Type 0-PDCCH CSS of the first cell.

[0103] In some embodiments, the Type0-PDCCH CSS is determined based on at least one of the following: second indication information, third indication information, and fourth indication information. For example, the first indication information is used to indicate whether the first downlink channel or signal carries at least one of the second, third, and fourth indication information.

[0104] In some embodiments, the first indication information is used to indicate whether the first downlink channel or signal carries indication information for determining the Type 0-PDCCH CSS of the first cell, including: the first indication information is used to indicate whether the first downlink channel or signal carries at least one of the second indication information, the third indication information, and the fourth indication information.

[0105] The second indication information is used to determine the CORESET0 of the first cell. Optionally, the second indication information is the configuration information of CORESET0, which is used to determine the CORESET0 of the first cell. The CORESET0 of the first cell is the set of control resources used by the network equipment of the first cell to transmit PDCCH. CORESET0 is dedicated to transmitting PDCCH information required during the initial access process, especially when the terminal device demodulates SIB1 information during initial access. In some embodiments, the second indication information is 4 bits. Optionally, the terminal device determines CORESET0 according to the second indication information in the same way as the terminal device determines CORESET0 according to the configuration information of CORESET0 included in the SIB1PDCCH configuration in the MIB.

[0106] The third indication information is used to determine the search space set 0 of the first cell. Optionally, the third indication information is the configuration information of the search space set 0, which is used to determine the search space set 0 of the first cell. The search space set 0 of the first cell refers to the search space set with ID 0 of the first cell, and the search space set 0 of the first cell is the search space set corresponding to CORESET0 of the first cell. The search space set refers to the time-frequency location set of the PDCCH, which is used to indicate the specific location of the PDCCH so that the terminal device can correctly decode the control information. In some embodiments, the third indication information is 4 bits. Optionally, the terminal device determines the search space set 0 according to the third indication information in the same way as the terminal device determines the search space set 0 according to the configuration information of the search space set 0 included in the SIB1PDCCH configuration in the MIB.

[0107] The fourth indication information is used to determine the first offset value. For example, the first offset value is the SSB subcarrier offset k of the first cell. SSB The relevant offset value. In some embodiments, the fourth indication information is 5 bits or 4 bits. For example, for FR1, the fourth indication information is 5 bits; for FR2, the fourth indication information is 4 bits.

[0108] Determining the Type 0-PDCCH CSS of the first cell requires obtaining the following information: configuration information of CORESET0, configuration information of search space set 0, and SSB subcarrier offset k. SSB Therefore, based on the aforementioned second, third, and fourth indication information, the Type 0-PDCCH CSS of the first cell can be determined. The configuration information of CORESET0 and the configuration information of search space set 0 together constitute the SIB1PDCCH configuration.

[0109] In some embodiments, the Type 0-PDCCH CSS of the first cell can be obtained by at least one of the following methods, wherein the ULWUS configuration of the first cell is sent through a second cell, such as Cell A, which is not the first cell.

[0110] Method 1: The UL WUS configuration or RAR of the first cell includes the following information: SIB1PDCCH configuration and SSB subcarrier offset k SSB In other words, the UL WUS configuration or RAR includes the following information: configuration information for CORESET0, configuration information for search space set 0, and SSB subcarrier offset k. SSB Optionally, the configuration information for CORESET0 is 4 bits, the configuration information for search space set 0 is 4 bits, and the SSB subcarrier offset k... SSB If the configuration is 5 bits or 4 bits, then the UL WUS configuration or RAR of the first cell requires a total of 13 bits or 12 bits to indicate the above 3 items of information.

[0111] Method 2: The UL WUS configuration of the first cell includes the following information: configuration information of CORESET0 and SSB subcarrier offset k. SSB The RAR or SSB of the first cell includes the following information: configuration information for search space set 0. Optionally, the configuration information for CORESET0 is 4 bits, and the SSB subcarrier offset k... SSB If the information is 5 bits or 4 bits, then the UL WUS configuration of the first cell requires a total of 9 bits or 8 bits to indicate the above two pieces of information. Optionally, if the configuration information for search space set 0 is 4 bits, then the RAR of the first cell needs 4 bits to indicate that this information or the information in the SSB of the first cell used to determine that search space set 0 is valid information.

[0112] Method 3: The UL WUS configuration or RAR of the first cell includes the following information: SSB subcarrier offset k SSB The SSB of the first cell includes the following information: SIB1PDCCH configuration, i.e., the configuration information of CORESET0 and the configuration information of search space set 0. That is, the SIB1PDCCH configuration included in the SSB of the first cell is valid information. Optionally, the SSB subcarrier offset k... SSB If it is 5 bits or 4 bits, then 5 bits or 4 bits are required in the UL WUS configuration or RAR of the first cell to indicate this information.

[0113] Method 4: The SSB of the first cell includes the following information: SIB1PDCCH configuration and SSB subcarrier offset k SSBIn other words, the SSB of the first cell includes the following information: configuration information of CORESET0, configuration information of search space set 0, and SSB subcarrier offset k. SSB That is, the information used in the SSB of the first cell to determine the Type0-PDCCH CSS is valid information.

[0114] For example, if the SSB of the first cell is on the sync raster and for FR1, k SSB Not equal to 30, or for FR2, k SSB If it is not equal to 14, then the Type0-PDCCH CSS can be obtained through method 1 or method 2 above.

[0115] For example, if the SSB of the first cell is on the sync raster and for FR1, k SSB Equals 30, or for FR2, k SSB If the value is 14, then the Type0-PDCCH CSS can be obtained through method 3.

[0116] For example, if the SSB of the first cell is not on the sync raster, the Type0-PDCCH CSS can be obtained via method 4.

[0117] For method 4 above, system message updates can reuse existing processes.

[0118] For methods 1, 2, or 3 above, due to the SIB1PDCCH configuration and / or k SSB It needs to be obtained through methods other than SSB. During the system message update process of the first cell, if the acquisition method in method 1, 2, or 3 is reused (i.e., obtaining the SIB1PDCCH configuration and / or k from the second cell, such as Cell A, of the first cell, such as NESCell) SSB This would significantly increase latency. To reduce latency, this application proposes to instruct the SIB1PDCCH configuration and / or k using a DCI format (i.e., the first DCI mentioned above). SSB .

[0119] In some embodiments, the first DCI is DCI format 1_0 with CRC using the first RNTI scrambling code. Optionally, in step 510, the first DCI includes first indication information, which indicates whether the first downlink channel or signal carries indication information for determining the Type 0-PDCCH CSS of the first cell. This can be replaced by: the first DCI corresponding to the first RNTI scrambling code, which indicates that the first downlink channel or signal carries indication information for determining the Type 0-PDCCH CSS of the first cell. Optionally, the first RNTI is an RNTI configured by the network device for obtaining CORESET0 and / or search space set 0. Exemplarily, the first RNTI is NES-RNTI. That is, when the first DCI is DCI format 1_0 with CRC using the first RNTI scrambling code, it means that the DCI format 1_0 includes indication information for determining the Type 0-PDCCH CSS.

[0120] Optionally, when the first DCI is the DCI format 1_0 of the CRC using the first RNTI scrambling code, the information fields included in the first DCI are as follows: second indication information (4 bits); third indication information (4 bits); fourth indication information (5 bits for FR1, or 4 bits for FR2); reserved bits.

[0121] Optionally, when the first DCI is a DCI format 1_0 using the first RNTI scrambling code for CRC, the first DCI also includes first indication information, which is used to indicate whether the first DCI carries at least one of the second indication information, the third indication information, and the fourth indication information.

[0122] In some embodiments, the first DCI is the DCI with P-RNTI scrambling in the first cell. Optionally, the first DCI is DCI format 1_0 with P-RNTI scrambling for CRC. Here, P-RNTI is a temporary identifier used for paging message transmission. It ensures that the paging message can be correctly sent to the target terminal device. DCI format 1_0 is a DCI format specifically used for transmitting paging messages when the first DCI is DCI format 1_0 with P-RNTI scrambling for CRC. By using P-RNTI scrambling, DCI format 1_0 ensures accurate transmission and reception of paging messages.

[0123] In some embodiments, the first indication information is used to indicate whether the first DCI carries at least one of the second indication information, the third indication information, and the fourth indication information, including at least one of the following: the first indication information is used to indicate that the first DCI carries the second indication information, the third indication information, and the fourth indication information; the first indication information is used to indicate that the first DCI carries the fourth indication information; the first indication information is used to indicate that the first DCI carries the second indication information and the fourth indication information; the first indication information is used to indicate that the first DCI carries the third indication information.

[0124] For example, during the system message update process, the terminal device needs to determine CORESET0, search space set 0 and first offset value through DCI format 1_0 of P-RNTI scrambling.

[0125] For example, during system message updates, the terminal device needs to determine the first offset value using the DCI format 1_0 of the P-RNTI scrambling code. CORESET0 and search space set 0 can be determined using the SSB in the first cell.

[0126] For example, during system message updates, the terminal device needs to determine CORESET0 and the first offset value using the DCI format 1_0 of the P-RNTI scrambling code. The search space set 0 can be determined by the SSB in the first cell.

[0127] For example, during a system message update, the terminal device needs to determine the search space set 0 using the DCI format 1_0 of the P-RNTI scrambling code. The terminal device can assume that CORESET0 remains unchanged before and after the update.

[0128] In some embodiments, the first offset value is the SSB subcarrier offset k of the first cell. SSB In this case, the fourth indication information can also be called SSB subcarrier offset indication information or k. SSB Indication information, used to indicate the SSB subcarrier offset k of the first cell. SSB For example, for FR1, the fourth indication information is a 5-bit k. SSB Indication information; or, for FR2, the fourth indication information is a 4-bit k SSB Instruction information. Optionally, k can be reduced. SSB The number of bits in the indication information (i.e., the fourth indication information). For example, assuming the SSB subcarrier spacing and the subcarrier spacing of search space set 0 are the same, then for FR1, the fourth indication information is 4 bits of k. SSB Indication information; or, for FR2, the fourth indication information is a 3-bit k SSB Instruction information.

[0129] In some embodiments, the first offset value is the offset between the starting position of CORESET0 before the system message update of the first cell and the starting position of CORESET0 after the system message update. Optionally, in this case, the unit of the first offset value is the number of RBs.

[0130] In some embodiments, the first offset value is the offset between the starting position of the SSB-CRB before the system message update and the starting position of the SSB-CRB after the system message update in the first cell. Optionally, in this case, the unit of the first offset value is the number of subcarriers.

[0131] In some embodiments, for FR1, the number of bits in the fourth indication information is less than 5; or for FR2, the number of bits in the fourth indication information is less than 4. For example, the number of bits in the fourth indication information is 2.

[0132] In some embodiments, the first DCI includes a short message field for determining system message updates; and / or, the first DCI includes a short message indication field for indicating the presence of a short message or indicating a "00" state.

[0133] Taking the first DCI as an example of DCI format 1_0 with P-RNTI scrambling for CRC, in related technologies, the information fields included in DCI format 1_0 with P-RNTI scrambling for CRC are as follows: Short message indication field (2 bits); Short message field (8 bits); Frequency domain resource allocation field (ceil(log2(N*(N+1) / 2)) bits, where N is the number of RBs in CORSET0, and ceil means rounding up); Time domain resource allocation field (4 bits); VRB (Virtual Resource Block) to PRB mapping field (1 bit); MCS (Modulation and Coding Scheme) field (5 bits). Since the modulation method corresponding to the MCS of the scheduling paging can only use QPSK (Quadrature Phase Shift Keying), the lower 4 bits of the MCS field or the lower 3 bits of the MCS can be used to indicate the MCS. Therefore, the higher 1 or higher 2 bits of the MCS can be used to indicate new information; TB (Transport) Block (transmission block) quantization field (2 bits); TRS availability indicator field (M bits, M can be 1, 2, 3, 4, 5 or 6 if this information field is configured); reserved bits (8-M bits reserved if it is a shared spectrum in FR1 or FR2-2; or 6-M bits reserved if it is a non-shared spectrum).

[0134] Therefore, at least one of the following in the first DCI (such as DCI format 1_0 with CRC using P-RNTI scrambling) can be used to indicate at least one of the first indication information, the second indication information, the third indication information, and the fourth indication information: a state in the short message indication field (such as the "00" state), at least one bit in the short message field (such as the 5th to 8th bits), the VRB to PRB mapping field, at least one bit in the MCS field (such as the high 1 bit or the high 2 bits), the TB quantization field, the TRS availability indication field, and the reserved bit.

[0135] Scenario 1: First instruction information

[0136] In some embodiments, the first DCI includes a short message indication field, and the first indication information includes a state in the short message indication field; and / or, the first DCI includes a short message field, and the first indication information includes at least one bit in the short message field.

[0137] Optionally, a state (such as "00") in the short message indication field is used to indicate the first indication information. Optionally, a state (such as "00") in the short message indication field is used to indicate that the first DCI includes the first indication information. Optionally, when the short message indication field indicates the "00" state, the first indication information is used to indicate that the first downlink channel or signal carries the indication information of Type 0-PDCCH CSS, that is, the first indication information is used to indicate that the first downlink channel or signal includes at least one of the second indication information, the third indication information, and the fourth indication information.

[0138] For example, the short message indication field can be updated as shown in Table 4 below.

[0139] Table 4: Short Message Indicator Fields

[0140] Optionally, the first indication information is used to indicate whether the first downlink channel or signal carries the second, third, and fourth indication information. In this case, if the first downlink channel or signal carries the second, third, and fourth indication information, during the system message update process, the terminal device can determine the CORESET0 of the first cell, the search space set 0, and the first offset value through the first downlink channel or signal.

[0141] Optionally, the first indication information is used to indicate whether the first downlink channel or signal carries the fourth indication information. In this case, if the first downlink channel or signal carries the fourth indication information, the terminal device can determine the first offset value through the first downlink channel or signal during system message update. Alternatively, if it is determined from the first indication information that the first downlink channel or signal does not carry the second and third indication information, the CORESET0 and search space set 0 of the first cell can be determined based on the SSB in the first cell.

[0142] Optionally, the first indication information is used to indicate whether the first downlink channel or signal carries the second and fourth indication information. In this case, if the first downlink channel or signal carries the second and fourth indication information, the terminal device can determine CORESET0 and the first offset value through the first downlink channel or signal during system message update. Alternatively, if it is determined from the first indication information that the first downlink channel or signal does not carry the third indication information, the search space set 0 of the first cell can be determined based on the SSB in the first cell.

[0143] Optionally, the first indication information is used to indicate whether the first downlink channel or signal carries the third indication information. In this case, if the first downlink channel or signal carries the third indication information, the terminal device can determine the search space set 0 through the first downlink channel or signal during the system message update process. Alternatively, if it is determined from the first indication information that the first downlink channel or signal does not carry the second and fourth indication information, the terminal device can assume that the CORESET0 of the first cell remains unchanged before and after the system message update.

[0144] Optionally, a state (such as a "00" state) in the short message indication field and some or all of the bits in the short message field are used to indicate the first indication information. Optionally, when the short message indication field indicates a "00" state and at least one bit in the short message field indicates a preset value, the first indication information is used to indicate that the first downlink channel or signal carries the indication information of Type 0-PDCCH CSS, that is, the first indication information is used to indicate that the first downlink channel or signal includes at least one of the second, third, and fourth indication information. For example, when the short message indication field indicates a "00" state and bits 1 to 4 in the short message field indicate "1", it indicates that the first downlink channel or signal includes at least one of the second, third, and fourth indication information. For example, when the short message indication field indicates a "00" state and bits 1 to 8 in the short message field indicate "1", it indicates that the first downlink channel or signal includes at least one of the second, third, and fourth indication information.

[0145] Optionally, some or all of the bits in the short message field are used to indicate the first indication information. Optionally, when at least one bit in the short message field indicates a preset value, the first indication information is used to indicate that the first downlink channel or signal carries the indication information of Type 0-PDCCH CSS, that is, the first indication information is used to indicate that the first downlink channel or signal includes at least one of the second indication information, the third indication information, and the fourth indication information. For example, one bit from the 5th to 8th bits of the short message field is used to indicate whether the first downlink channel or signal includes the second indication information and / or the third indication information. For example, one bit from the 5th to 8th bits of the short message field is used to indicate whether the first downlink channel or signal includes the fourth indication information.

[0146] Optionally, when the first, second, or fourth bits in the short message field are used to determine system message updates, and some bits in the short message field, such as the fifth to eighth bits, indicate a preset value, it indicates that the first downlink channel or signal includes at least one of the second indication information, the third indication information, and the fourth indication information.

[0147] Optionally, when the short message indication field indicates the presence of a short message or a reservation, and the first, second, or fourth bits of the short message field are used to determine a system message update, it indicates that the first downlink channel or signal includes at least one of the second, third, and fourth indication information. Further, some bits in the short message field, such as at least one of the fifth to eighth bits, are used to indicate at least one of the following: the first DCI carries the second, third, or fourth indication information; the first DCI carries the fourth indication information; the first DCI carries the second and fourth indication information; or the first DCI carries the third indication information.

[0148] Optionally, when the short message indication field indicates the presence of a short message or a reservation, and the first, second, or fourth bits of the short message field are used to determine a system message update, and some bits of the short message field, such as the fifth to eighth bits, indicate a preset value, it indicates that the first downlink channel or signal includes at least one of the second, third, and fourth indication information. For example, when the short message indication field indicates a "10", "11", or "00" state, and the first, second, or fourth bits of the short message field are used to determine a system message update, and some bits of the short message field, such as the fifth to eighth bits, indicate a preset value, it indicates that the first downlink channel or signal includes at least one of the second, third, and fourth indication information.

[0149] Optionally, in addition to the short message indication field and the short message field, the first DCI also includes at least one bit of a first indication information field, used to indicate at least one of the following: the first DCI carries second indication information, third indication information, and fourth indication information; the first DCI carries fourth indication information; the first DCI carries second indication information and fourth indication information; or the first DCI carries third indication information.

[0150] Scenario 2: Second instruction information

[0151] In some embodiments, the first DCI includes at least one of the following information fields, and the second indication information includes at least one bit from the following at least one information field: short message field, VRB to PRB mapping field, MCS field, TB quantization field, TRS availability indication field, and reserved bit.

[0152] Optionally, the second indication information uses at least one of the following: the 5th to 8th bits in the short message field, the VRB to PRB mapping field, the high 1 or high 2 bits of the MCS field, the TB quantization field, the TRS availability indication field, and the reserved bits.

[0153] For example, the second indication information includes 4 bits, of which 2 bits are 2 bits from the 5th to the 8th bits in the short message field, and 2 bits are the high 2 bits of the MCS field.

[0154] For example, the second indication information includes 4 bits, of which 2 bits are the high 2 bits of the MCS field, 1 bit is a bit in the VRB to PRB mapping field, and 1 bit is a bit in the TRS availability indication field.

[0155] For example, the second indication information includes 4 bits, which are bits in the TRS availability indication field.

[0156] For example, the second indication information includes 4 bits, which are 4 bits from the reserved bits.

[0157] For example, the second indication information includes 4 bits, of which 2 bits are the high 2 bits of the MCS field and 2 bits are 2 bits in the reserved bits.

[0158] Optionally, when the short message indication field indicates a "00" state, the first DCI does not include the following information fields: frequency domain resource allocation field, time domain resource allocation field, VRB to PRB mapping field, MCS field, TB quantization field, and TRS availability indication field, and the second indication information is the bit in the first DCI.

[0159] Scenario 3: Third instruction information

[0160] In some embodiments, the first DCI includes at least one of the following information fields, and the third indication information includes at least one bit from the following at least one information field: short message field, VRB to PRB mapping field, MCS field, TB quantization field, TRS availability indication field, and reserved bit.

[0161] Optionally, the third indication information uses at least one of the following: the 5th to 8th bits in the short message field, the VRB to PRB mapping field, the high 1 or high 2 bits of the MCS field, the TB quantization field, the TRS availability indication field, and the reserved bits.

[0162] Optionally, when the short message indication field indicates a "00" state, the first DCI does not include the following information fields: frequency domain resource allocation field, time domain resource allocation field, VRB to PRB mapping field, MCS field, TB quantization field, and TRS availability indication field, and the third indication information is the bit in the first DCI.

[0163] Scenario 4: Fourth Instruction Message

[0164] In some embodiments, the first DCI includes at least one of the following information fields, and the fourth indication information includes at least one bit from the following at least one information field: short message field, VRB to PRB mapping field, MCS field, TB quantization field, TRS availability indication field, and reserved bit.

[0165] Optionally, the fourth indication information uses at least one of the following: the 5th to 8th bits in the short message field, the VRB to PRB mapping field, the high 1 or high 2 bits of the MCS field, the TB quantization field, the TRS availability indication field, and the reserved bits.

[0166] Optionally, when the short message indication field indicates a "00" state, the first DCI does not include the following information fields: frequency domain resource allocation field, time domain resource allocation field, VRB to PRB mapping field, MCS field, TB quantization field, TRS availability indication field, and the fourth indication information is a bit in the first DCI.

[0167] In some embodiments, the first downlink channel or signal is a first DCI, which includes the following information fields: short message indication field, short message field, second indication information, third indication information, fourth indication information, and reserved bits. Of course, this application does not limit the first DCI to include other information fields.

[0168] For example, when the short message indication field indicates a "00" state, the first DCI includes the following information fields: a short message indication field (2 bits) indicating a "00" state; a short message field (8 bits); second indication information; third indication information; fourth indication information; and reserved bits. Specifically, the short message indication field indicating a "00" state signifies the presence of a short message; bits 1, 2, or 4 in the short message field indicate a system message update; and at least one bit from bits 5 to 8 in the short message field is used to indicate that the first DCI includes at least one of the second, third, and fourth indication information.

[0169] For example, when the short message indication field indicates a "00" state, the first DCI includes the following information fields: a short message indication field (2 bits) indicating a "00" state; a short message field (8 bits); first indication information; second indication information; third indication information; fourth indication information; and reserved bits. Wherein, the short message indication field indicates a "00" state, signifying the presence of a short message; the first, second, or fourth bit in the short message field indicates a system message update; the first indication information field is used to indicate that the first DCI includes at least one of the second, third, and fourth indication information. Optionally, at least one bit from the fifth to eighth bits in the short message field indicates a preset value.

[0170] In some embodiments, when the first downlink channel or signal is a PDSCH scheduled by the first DCI, the MAC CE (Media Access Control Control Element) carried in the PDSCH includes at least one of the second indication information, the third indication information, and the fourth indication information.

[0171] In some embodiments, bits 5 to 8 in the short message field are reserved bits, and one or more of these bits can be used to indicate whether at least one of the second indication information, the third indication information, and the fourth indication information is carried in the first downlink channel or signal.

[0172] Example 1

[0173] The first indication information includes a first bit and / or a second bit in the short message field. The first bit indicates whether the first downlink channel or signal carries second and third indication information; the second bit indicates whether the first downlink channel or signal carries fourth indication information. For example, the first bit indicates whether the first downlink channel or signal carries the CORESET0 and search space set 0 of the first cell; the second bit indicates whether the first downlink channel or signal carries a first offset value, such as the SSB subcarrier offset k of the first cell. SSB Optionally, the first bit and the second bit are two different bits.

[0174] Optionally, one bit from bits 5 to 8 of the short message field is used to indicate whether the first downlink channel or signal carries fourth indication information; and / or, one bit from bits 5 to 8 of the short message field is used to indicate whether the first downlink channel or signal carries second and third indication information. Here, the two bits mentioned above are two different bits.

[0175] For example, the 5th bit in the short message field is used to indicate whether the DCI of the P-RNTI scrambling code carries fourth indication information. Optionally, when the 5th bit indicates that the DCI of the P-RNTI scrambling code carries fourth indication information, if the fourth indication information is used to indicate the k of the first cell... SSB For FR1, the fourth indication information is 5 bits; for FR2, the fourth indication information is 4 bits.

[0176] For example, the 6th bit in the short message field is used to indicate whether the DCI of the P-RNTI scrambling code carries the second and third indication information. When the 6th bit indicates that the DCI of the P-RNTI scrambling code carries the second and third indication information, the DCI of the P-RNTI scrambling code includes 8 bits of SIB1PDCCH configuration information (i.e., the aforementioned second and third indication information).

[0177] For example, the short message field can be updated as shown in Table 5 below.

[0178] Table 5: Short Message Domain

[0179] In other words, when a terminal device in the first cell determines a system message update based on the first, second, or fourth bits in the short message field, it also needs to determine, based on the fifth and / or sixth bits, whether to obtain at least one of the second, third, and fourth indication information from the first downlink channel or signal.

[0180] For example, the fourth indication information is 5 bits (FR1) or 4 bits (FR2) after the short message field, and the second and third indication information are 8 bits after the fourth indication information.

[0181] For example, the second and third indication information are 8 bits after the short message field, and the fourth indication information is 5 bits (FR1) or 4 bits (FR2) after the second and third indication information.

[0182] Example 2

[0183] The first indication information includes a first bit and / or a second bit in the short message field. The first bit indicates whether the first downlink channel or signal carries second, third, and fourth indication information; the second bit indicates whether the first downlink channel or signal carries fourth indication information. For example, the first bit indicates whether the first downlink channel or signal carries the CORESET0, search space set 0, and first offset value of the first cell, such as the SSB subcarrier offset k of the first cell. SSB The second bit is used to indicate whether the first downlink channel or signal carries a first offset value, such as the SSB subcarrier offset k of the first cell. SSB Alternatively, the first bit and the second bit can be two different bits; or, the first bit and the second bit can be the same bit.

[0184] Optionally, one bit from bits 5 to 8 of the short message field is used to indicate whether the first downlink channel or signal carries a first offset value; and / or, one bit from bits 5 to 8 of the short message field is used to indicate whether the first downlink channel or signal carries a first offset value and SIB1PDCCH configuration (including CORESET0 and search space set 0). These two bits can be two different bits or the same bit.

[0185] In some embodiments, when the Type0-PDCCH CSS is obtained based on a first method, a first bit is used to indicate whether a fourth indication information is carried in the first downlink channel or signal; when the Type0-PDCCH CSS is obtained based on a second method, a second bit is used to indicate whether a second indication information, a third indication information, and a fourth indication information are carried in the first downlink channel or signal; wherein the first method and the second method are different.

[0186] Optionally, the first approach includes: including k in the UL WUS configuration or RAR. SSB That is, method 3 described above; and / or, the second method includes: UL WUS configuration or RAR including k SSB Configure with SIB 1PDCCH, i.e., method 1 or method 2 as described above.

[0187] For example, when the Type0-PDCCH CSS is obtained through method 1 or method 2 described above, one bit from the 5th to 8th bits in the short message field is used to indicate whether the first downlink channel or signal carries the second indication information, the third indication information, and the fourth indication information.

[0188] For example, when the Type0-PDCCH CSS is obtained via method 3 described above, one bit from the 5th to 8th bits in the short message field is used to indicate whether the first downlink channel or signal carries the fourth indication information.

[0189] In other words, when a terminal device in the first cell determines a system message update based on the first, second, or fourth bits in the short message field, it also needs to determine, based on the bits in the fifth to eighth bits, whether to obtain at least one of the second, third, and fourth indication information from the first downlink channel or signal.

[0190] For example, the fourth indication information is 5 bits (FR1) or 4 bits (FR2) after the short message field, and the second and third indication information are 8 bits after the fourth indication information.

[0191] For example, the second and third indication information are 8 bits after the short message field, and the fourth indication information is 5 bits (FR1) or 4 bits (FR2) after the second and third indication information.

[0192] The technical solution provided in this application embodiment allows a terminal device to receive a DCI sent by a network device and obtain the configuration of Type0-PDCCH CSS based on the DCI. This enables the terminal device to obtain the configuration of Type0-PDCCH CSS under different circumstances during the system message update process, allowing the terminal device to receive SIB 1 sent by the network device based on the configuration, thereby improving the reliability and success rate of the terminal access process.

[0193] Please refer to Figure 6, which shows a flowchart of a wireless communication method provided in another embodiment of this application. This method can be applied to the network architectures shown in Figures 1 to 3, as well as other network architectures. As shown in Figure 6, the method may include the following step 610:

[0194] Step 610: The terminal device or network device determines the first CORSET corresponding to the first cell. The first CORSET is used to receive the RAR from the first cell.

[0195] In some embodiments, the first CORSET may also be referred to as the RA control resource set, or the control resource set corresponding to the RA search space set. After determining the first CORSET, the network device of the first cell sends a RAR on the first CORSET; correspondingly, after determining the first CORSET, the terminal device receives the RAR from the first cell on the first CORSET.

[0196] In some embodiments, the first cell can be any cell, such as any TN cell or NTN cell. Optionally, the first cell can be an NES cell.

[0197] In the embodiments of this application, the following three methods are provided to determine the first CORSET.

[0198] Method 1

[0199] In some embodiments, the first CORSET is determined based on the downlink BWP of the first cell, and the downlink BWP is determined based on the UL WUS configuration of the first cell.

[0200] Optionally, the terminal device may first determine the downlink BWP of the first cell based on the UL WUS configuration of the first cell, and then determine the first CORSET corresponding to the first cell based on the downlink BWP of the first cell.

[0201] In some embodiments, the UL WUS configuration is used to determine at least one of the following: the starting PRB of the downlink BWP, the number of PRBs included in the downlink BWP, the first absolute frequency point A (first Point A), the first carrier offset value, the first SCS, and the second SCS; wherein the first SCS is the SCS corresponding to the first carrier offset value, and the second SCS is the SCS corresponding to the downlink BWP.

[0202] For example, the UL WUS configuration includes a first Point A and a first carrier offset value. The first Point A indicates the frequency domain position of the first subcarrier of the first reference CRB0, and the first carrier offset value indicates the number of subcarriers between the first subcarrier (i.e., the starting position of the downlink carrier) of the first cell and the first Point A. This subcarrier is determined based on the first SCS (or the first carrier offset value corresponds to the first SCS). In other words, the starting position of the downlink carrier of the first cell can be determined in this way. As shown in Figure 7, the starting position of the downlink carrier of the first cell can be determined based on the first Point A and the first carrier offset value. Then, the downlink BWP of the first cell can be further determined based on the starting position of the downlink carrier of the first cell, such as determining the starting PRB of the downlink BWP of the first cell.

[0203] In some embodiments, the UL WUS configuration includes downlink BWP indication information, which indicates the starting PRB of the downlink BWP and / or the number of PRBs included in the downlink BWP. For example, the downlink BWP indication information is locationAndBandwidth. Optionally, the downlink BWP indication information indicates the starting PRB of the downlink BWP and / or the number of PRBs included in the downlink BWP on the downlink carrier of the first cell via a RIV (resource indicator value). For example, the downlink BWP indication information includes an RIV value, and the terminal device can calculate or determine the starting PRB of the downlink BWP and / or the number of PRBs included in the downlink BWP on the downlink carrier of the first cell based on this RIV value. Optionally, the starting PRB of the downlink BWP and / or the number of PRBs included in the downlink BWP is determined based on a second SCS (or the downlink BWP corresponds to a second SCS). That is, for different second SCSs, the starting PRB of the downlink BWP and / or the number of PRBs included in the downlink BWP will also be different. This method allows us to determine the starting position and bandwidth of the downlink BWP on the downlink carrier of the first cell.

[0204] In some embodiments, the first SCS and / or the second SCS are determined based on any one of the following: UL WUS configuration, the SCS corresponding to the SSB in the first cell, the SCS determined by the common subcarrier spacing parameter (subCarrierSpacingCommon) of the SSB in the first cell, or a predefined SCS. Exemplarily, the first SCS and / or the second SCS is the SCS corresponding to the SSB in the first cell. Exemplarily, the first SCS and / or the second SCS is the SCS determined by the common subcarrier spacing parameter of the SSB in the first cell. Exemplarily, the first SCS and the second SCS are the same SCS. Exemplarily, the first SCS and the second SCS are different SCSs.

[0205] In some embodiments, after determining the downlink BWP of the first cell, the terminal device can determine the first CORSET configured on the downlink BWP of the first cell based on the first CORSET configuration information. For example, the first CORSET configuration information includes frequency domain resource configuration information of the first CORSET, such as frequencyDomainResources, which is used to configure the frequency domain resources of the first CORSET on the downlink BWP according to the prior art.

[0206] Method 2

[0207] In some embodiments, the frequency domain start position corresponding to the first CORSET is determined based on the UL WUS configuration of the first cell.

[0208] Optionally, the terminal device can directly determine the frequency domain start position corresponding to the first CORSET based on the UL WUS configuration of the first cell. In other words, the UL WUS configuration is used to determine the frequency domain start position corresponding to the first CORSET.

[0209] In some embodiments, the UL WUS configuration is used to determine at least one of the following: second absolute frequency point A (second Point A), SSB subcarrier offset k SSB The second carrier offset value and the third SCS; wherein the third SCS is the SCS corresponding to the second carrier offset value.

[0210] For example, the UL WUS configuration includes a second Point A and a second carrier offset value. The second Point A is used to indicate the frequency domain position of the first subcarrier of the second reference CRB0, and the second carrier offset value is used to indicate the number of subcarriers in the interval between the first subcarrier of the frequency domain resource corresponding to the first CORSET and the second Point A. Alternatively, the second carrier offset value is used to indicate the number of PRBs in the interval between the first PRB of the frequency domain resource corresponding to the first CORSET and the second Point A.

[0211] In some embodiments, when the spectrum corresponding to the first cell is a TDD spectrum, the second PointA is also used to determine NES uplink cell configuration information. That is, the second PointA is the same parameter as absoluteFrequencyPointA in the related technologies described above.

[0212] In some embodiments, the third SCS is determined based on any one of the following: UL WUS configuration, the SCS corresponding to the SSB in the first cell, the SCS determined by the common subcarrier spacing parameter (subCarrierSpacingCommon) of the SSB in the first cell, or a predefined SCS. For example, the third SCS is the SCS corresponding to the SSB in the first cell. For example, the third SCS is the SCS determined by the common subcarrier spacing parameter of the SSB in the first cell.

[0213] Alternatively, the second carrier offset value can be replaced with k SSB value.

[0214] Optionally, the frequency domain location indicated by the second PointA can be replaced with subcarrier 0 of the SSB.

[0215] For example, the second carrier offset value can be replaced with k SSBThe value, the frequency domain position indicated by the second PointA, can be replaced with subcarrier 0 of the SSB, that is, the number of subcarriers in the interval between the first subcarrier of the frequency domain resource corresponding to the first CORSET and subcarrier 0 of the SSB is k. SSB The number of subcarriers indicated.

[0216] After determining the starting position of the frequency domain corresponding to the first CORSET, the frequency domain resource configuration information corresponding to the first CORSET indicates the frequency domain resources of the first CORSET in the form of a bitmap.

[0217] For example, starting from the frequency domain start position corresponding to the first CORSET, the frequency domain includes multiple non-overlapping and consecutive PRB groups, each PRB group comprising 6 RBs. The frequency domain resource configuration information corresponding to the first CORSET includes N bits, each bit corresponding to one PRB group. This bit stream and the multiple PRB groups have a one-to-one mapping relationship. Specifically, the first bit corresponds to the first PRB group starting from the frequency domain start position, the second bit corresponds to the second PRB group starting from the frequency domain start position, and so on. If the bit value is 1, the corresponding PRB group is configured as a frequency domain resource in the first CORSET; if the bit value is 0, the corresponding PRB group is not configured as a frequency domain resource in the first CORSET.

[0218] For example, the frequency domain resource configuration information is frequencyDomainResources, which includes 45 bits.

[0219] Figure 8 illustrates an example of determining the frequency domain resources corresponding to the first CORSET based on the UL WUS configuration. The UL WUS configuration includes a second Point A and a second carrier offset value. The terminal device determines the starting position of the frequency domain corresponding to the first CORSET based on the second Point A and the second carrier offset value. Then, the terminal device further determines the frequency domain resources of the first CORSET using a bitstream mapping method, based on the bitstream contained in the frequency domain resource configuration information corresponding to the first CORSET. For example, the bitstream included in the frequency domain resource configuration information frequencyDomainResources contains 0s and 1s. The PRB group corresponding to 1 is configured as the first CORSET, as shown by the dotted shading in the figure; the PRB group corresponding to 0 is not configured as the first CORSET.

[0220] Method 3

[0221] In some embodiments, the first CORSET is the CORSET0 of the first cell.

[0222] In this case, the starting position of the frequency domain corresponding to the first CORSET is the starting position of the frequency domain corresponding to CORSET0, and the bandwidth of the first CORSET is the bandwidth of CORSET0.

[0223] In some embodiments, the CORSET0 of the first cell is determined based on the UL WUS configuration of the first cell. For details on how the CORSET0 of the first cell is determined based on the UL WUS configuration of the first cell, please refer to the description in the embodiments above; it will not be repeated here.

[0224] In some embodiments, the CORESET0 of the first cell is determined based on the MIB of the first cell. For example, the terminal device determines CORESET0 according to the configuration information of CORESET0 included in the SIB1PDCCH configuration in the MIB.

[0225] The following describes how to determine the bandwidth corresponding to the frequency domain resource allocation of the PDSCH for the PDCCH scheduling of the RA-RNTI (Random Access-Radio Network Temporary Identifier) ​​scrambling code corresponding to the first cell. In this application embodiment, the following three methods are provided.

[0226] Method 1

[0227] In some embodiments, the bandwidth corresponding to the frequency domain resource allocation of the PDSCH scheduled by the PDCCH with RA-RNTI scrambling code corresponding to the first cell is the bandwidth corresponding to CORSET0 of the first cell. Alternatively, for the PDCCH with RA-RNTI scrambling code, the number of bits corresponding to its frequency domain resource allocation field is determined based on the number of RBs corresponding to CORSET0.

[0228] For a RA-RNTI scrambled PDCCH, the number of bits corresponding to its frequency domain resource allocation field is determined based on the number of RBs corresponding to CORESET0. In this case, regardless of which of the aforementioned methods the first CORSET is determined, the frequency domain resource allocation of the PDSCH scheduled by the RA-RNTI scrambled PDCCH is determined in the same way.

[0229] Method 2

[0230] In some embodiments, the bandwidth corresponding to the frequency domain resource allocation of the PDSCH scheduled by the PDCCH with RA-RNTI scrambling for the first cell is the bandwidth of the downlink BWP of the first cell determined based on the UL WUS configuration of the first cell. Alternatively, for the RA-RNTI scrambling PDCCH, the number of bits corresponding to its frequency domain resource allocation field is determined based on the number of RBs corresponding to the downlink BWP. Furthermore, the specific method for determining the bandwidth of the downlink BWP of the first cell based on the UL WUS configuration of the first cell can be found in the above description and will not be repeated here.

[0231] Method 3

[0232] When the UL WUS configuration is used to determine the starting PRB and / or the number of PRBs included in the downlink BWP of the first cell, the bandwidth corresponding to the frequency domain resource allocation of the PDSCH scheduled by the PDCCH of the RA-RNTI scrambling code corresponding to the first cell is the bandwidth of the downlink BWP of the first cell determined based on the UL WUS configuration of the first cell; otherwise, the bandwidth corresponding to the frequency domain resource allocation of the PDSCH scheduled by the PDCCH of the RA-RNTI scrambling code corresponding to the first cell is the bandwidth corresponding to the CORSET0 of the first cell.

[0233] The technical solutions provided in this application provide multiple ways to determine the first CORSET corresponding to the first cell, so that the terminal device can receive the RAR from the first cell based on the determined first CORSET. In the SIB1 transmission process of the terminal device requesting the cell, the frequency domain location of the first CORSET and the frequency domain resource allocation corresponding to the PDSCH carrying the RAR can be correctly determined, thereby improving the success rate and reliability of random access.

[0234] It should be noted that the steps described above, performed by the terminal device, can be implemented independently as a wireless communication method on the terminal device side. Similarly, the steps described above, performed by the network device, can be implemented independently as a wireless communication method on the network device side.

[0235] The following are embodiments of the apparatus described in this application, which can be used to execute the embodiments of the method described in this application. For details not disclosed in the apparatus embodiments of this application, please refer to the embodiments of the method described in this application.

[0236] Please refer to Figure 9, which shows a block diagram of a wireless communication device according to an embodiment of this application. This device has the function of implementing the above-described wireless communication method; the function can be implemented in hardware or by hardware executing corresponding software. This device can be the terminal device described above, or it can be disposed within a terminal device. As shown in Figure 9, the device 900 may include a receiving module 910.

[0237] The receiving module 910 is configured to receive a first DCI, the first DCI including first indication information, the first indication information being used to indicate whether a first downlink channel or signal carries indication information for determining the Type 0-PDCCH CSS of a first cell, wherein the first downlink channel or signal is the first DCI or a PDSCH scheduled by the first DCI, and the Type 0-PDCCH CSS is determined based on at least one of the following: second indication information, the second indication information being used to determine the CORESET0 of the first cell; third indication information, the third indication information being used to determine the search space set 0 of the first cell; and fourth indication information, the fourth indication information being used to determine a first offset value.

[0238] In some embodiments, the first offset value is the SSB subcarrier offset k of the first cell. SSB Alternatively, the first offset value is the offset between the starting position of CORESET0 before the system message update of the first cell and the starting position of CORESET0 after the system message update; or, the first offset value is the offset between the starting position of SSB-CRB before the system message update of the first cell and the starting position of SSB-CRB after the system message update.

[0239] In some embodiments, the first DCI includes a short message indication field, and the first indication information includes a state in the short message indication field; and / or, the first DCI includes a short message field, and the first indication information includes at least one bit in the short message field.

[0240] In some embodiments, when the short message indication field indicates a "00" state, the first indication information is used to indicate that the first downlink channel or signal carries the Type0-PDCCH CSS; or, when the short message indication field indicates a "00" state and at least one bit in the short message field indicates a preset value, the first indication information is used to indicate that the first downlink channel or signal carries the Type0-PDCCH CSS; or, when at least one bit in the short message field indicates a preset value, the first indication information is used to indicate that the first downlink channel or signal carries the Type0-PDCCH CSS.

[0241] In some embodiments, the first DCI includes at least one of the following information fields, and the second indication information includes at least one bit from the following at least one information field: short message field, VRB to PRB mapping field, MCS field, TB quantization field, TRS availability indication field, and reserved bit.

[0242] In some embodiments, the first DCI includes at least one of the following information fields, and the third indication information includes at least one bit from the following at least one information field: short message field, VRB to PRB mapping field, MCS field, TB quantization field, TRS availability indication field, and reserved bit.

[0243] In some embodiments, the first DCI includes at least one of the following information fields, and the fourth indication information includes at least one bit from the following at least one information field: short message field, VRB to PRB mapping field, MCS field, TB quantization field, TRS availability indication field, and reserved bit.

[0244] In some embodiments, the first downlink channel or signal is the first DCI, which includes the following information fields: short message indication field, short message field, second indication information, third indication information, fourth indication information, and reserved bits.

[0245] In some embodiments, when the first downlink channel or signal is a PDSCH scheduled by the first DCI, the MAC CE carried in the PDSCH includes at least one of the second indication information, the third indication information, and the fourth indication information.

[0246] In some embodiments, the first indication information is used to indicate whether the first downlink channel or signal carries the second indication information, the third indication information, and the fourth indication information; or, the first indication information is used to indicate whether the first downlink channel or signal carries the fourth indication information; or, the first indication information is used to indicate whether the first downlink channel or signal carries the second indication information and the fourth indication information; or, the first indication information is used to indicate whether the first downlink channel or signal carries the third indication information.

[0247] In some embodiments, if it is determined from the first indication information that the first downlink channel or signal does not carry the second indication information and the third indication information, the CORESET0 of the first cell and the search space set 0 of the first cell are determined based on the SSB of the first cell; or, if it is determined from the first indication information that the first downlink channel or signal does not carry the third indication information, the search space set 0 of the first cell is determined based on the SSB of the first cell; or, if it is determined from the first indication information that the first downlink channel or signal does not carry the second indication information and the fourth indication information, the CORESET0 of the first cell remains unchanged after the system message is updated.

[0248] In some embodiments, the first DCI includes a short message field for determining system message updates; and / or, the first DCI includes a short message indication field for indicating the presence of a short message or indicating a "00" state.

[0249] In some embodiments, the first DCI is the DCI of the P-RNTI scrambling code in the first cell.

[0250] Please refer to Figure 10, which shows a block diagram of a wireless communication device according to another embodiment of this application. This device has the function of implementing the above-described wireless communication method; the function can be implemented in hardware or by hardware executing corresponding software. This device can be a network device as described above, or it can be located within a network device. As shown in Figure 10, the device 1000 may include a transmitting module 1010.

[0251] The transmitting module 1010 is configured to transmit a first DCI, the first DCI including first indication information, the first indication information being used to indicate whether a first downlink channel or signal carries indication information for determining the Type 0-PDCCH CSS of a first cell, wherein the first downlink channel or signal is the first DCI or a PDSCH scheduled by the first DCI, and the Type 0-PDCCH CSS is determined based on at least one of the following: second indication information, the second indication information being used to determine the CORESET0 of the first cell; third indication information, the third indication information being used to determine the search space set 0 of the first cell; and fourth indication information, the fourth indication information being used to determine a first offset value.

[0252] In some embodiments, the first offset value is the SSB subcarrier offset k of the first cell. SSB Alternatively, the first offset value is the offset between the starting position of CORESET0 before the system message update of the first cell and the starting position of CORESET0 after the system message update; or, the first offset value is the offset between the starting position of SSB-CRB before the system message update of the first cell and the starting position of SSB-CRB after the system message update.

[0253] In some embodiments, the first DCI includes a short message indication field, and the first indication information includes a state in the short message indication field; and / or, the first DCI includes a short message field, and the first indication information includes at least one bit in the short message field.

[0254] In some embodiments, when the short message indication field indicates a "00" state, the first indication information is used to indicate that the first downlink channel or signal carries the Type0-PDCCH CSS; or, when the short message indication field indicates a "00" state and at least one bit in the short message field indicates a preset value, the first indication information is used to indicate that the first downlink channel or signal carries the Type0-PDCCH CSS; or, when at least one bit in the short message field indicates a preset value, the first indication information is used to indicate that the first downlink channel or signal carries the Type0-PDCCH CSS.

[0255] In some embodiments, the first DCI includes at least one of the following information fields, and the second indication information includes at least one bit from the following at least one information field: short message field, VRB to PRB mapping field, MCS field, TB quantization field, TRS availability indication field, and reserved bit.

[0256] In some embodiments, the first DCI includes at least one of the following information fields, and the third indication information includes at least one bit from the following at least one information field: short message field, VRB to PRB mapping field, MCS field, TB quantization field, TRS availability indication field, and reserved bit.

[0257] In some embodiments, the first DCI includes at least one of the following information fields, and the fourth indication information includes at least one bit from the following at least one information field: short message field, VRB to PRB mapping field, MCS field, TB quantization field, TRS availability indication field, and reserved bit.

[0258] In some embodiments, the first downlink channel or signal is the first DCI, which includes the following information fields: short message indication field, short message field, second indication information, third indication information, fourth indication information, and reserved bits.

[0259] In some embodiments, when the first downlink channel or signal is a PDSCH scheduled by the first DCI, the MAC CE carried in the PDSCH includes at least one of the second indication information, the third indication information, and the fourth indication information.

[0260] In some embodiments, the first indication information is used to indicate whether the first downlink channel or signal carries the second indication information, the third indication information, and the fourth indication information; or, the first indication information is used to indicate whether the first downlink channel or signal carries the fourth indication information; or, the first indication information is used to indicate whether the first downlink channel or signal carries the second indication information and the fourth indication information; or, the first indication information is used to indicate whether the first downlink channel or signal carries the third indication information.

[0261] In some embodiments, if it is determined from the first indication information that the first downlink channel or signal does not carry the second indication information and the third indication information, the CORESET0 of the first cell and the search space set 0 of the first cell are determined based on the SSB of the first cell; or, if it is determined from the first indication information that the first downlink channel or signal does not carry the third indication information, the search space set 0 of the first cell is determined based on the SSB of the first cell; or, if it is determined from the first indication information that the first downlink channel or signal does not carry the second indication information and the fourth indication information, the CORESET0 of the first cell remains unchanged after the system message is updated.

[0262] In some embodiments, the first DCI includes a short message field for determining system message updates; and / or, the first DCI includes a short message indication field for indicating the presence of a short message or indicating a "00" state.

[0263] In some embodiments, the first DCI is the DCI of the P-RNTI scrambling code in the first cell.

[0264] Please refer to Figure 11, which shows a block diagram of a wireless communication device according to another embodiment of this application. This device has the function of implementing the above-described wireless communication method; the function can be implemented in hardware or by hardware executing corresponding software. This device can be a terminal device or network device as described above, or it can be disposed within a terminal device or network device. As shown in Figure 11, the device 1100 may include a processing module 1110.

[0265] Processing module 1110 is used to determine the first CORSET corresponding to the first cell, and the first CORSET is used to receive RAR from the first cell.

[0266] In some embodiments, the first CORSET is determined based on the downlink BWP of the first cell, and the downlink BWP is determined based on the UL WUS configuration of the first cell.

[0267] In some embodiments, the UL WUS configuration is used to determine at least one of the following: the starting PRB of the downlink BWP, the number of PRBs included in the downlink BWP, the first absolute frequency point A, the first carrier offset value, the first SCS, and the second SCS; wherein the first SCS is the SCS corresponding to the first carrier offset value, and the second SCS is the SCS corresponding to the downlink BWP.

[0268] In some embodiments, the UL WUS configuration includes downlink BWP indication information, which is used to indicate the starting PRB of the downlink BWP and / or the number of PRBs included in the downlink BWP.

[0269] In some embodiments, the starting PRB of the downlink BWP and / or the number of PRBs included in the downlink BWP are determined based on the second SCS.

[0270] In some embodiments, the first SCS and / or the second SCS are determined based on any one of the following: the UL WUS configuration; the SCS corresponding to the SSB in the first cell; the SCS determined by the common subcarrier spacing parameters in the SSB of the first cell; or a predefined SCS.

[0271] In some embodiments, the frequency domain start position corresponding to the first CORSET is determined based on the UL WUS configuration of the first cell.

[0272] In some embodiments, the UL WUS configuration is used to determine at least one of the following: second absolute frequency A, SSB subcarrier offset k SSB The third carrier offset value is a second carrier offset value and a third SCS; wherein the third SCS is the SCS corresponding to the second carrier offset value.

[0273] In some embodiments, when the spectrum corresponding to the first cell is a TDD spectrum, the second absolute frequency point A is also used to determine the network energy-saving NES uplink cell configuration information.

[0274] In some embodiments, the third SCS is determined based on any one of the following: the UL WUS configuration; the SCS corresponding to the synchronization signal block SSB in the first cell; the SCS determined by the common subcarrier spacing parameters in the SSB of the first cell; or a predefined SCS.

[0275] In some embodiments, the first CORSET is the CORSET0 of the first cell.

[0276] In some embodiments, the CORSET0 of the first cell is determined based on the UL WUS configuration of the first cell; or, the CORSET0 of the first cell is determined based on the MIB of the first cell.

[0277] In some embodiments, the bandwidth corresponding to the frequency domain resource allocation of the PDSCH scheduled by the PDCCH with the RA-RNTI scrambling code corresponding to the first cell is the bandwidth corresponding to the CORSET0 of the first cell; or, the bandwidth corresponding to the frequency domain resource allocation of the PDSCH scheduled by the PDCCH with the RA-RNTI scrambling code corresponding to the first cell is the bandwidth of the downlink BWP of the first cell determined based on the UL WUS configuration of the first cell.

[0278] In some embodiments, when the UL WUS configuration is used to determine the starting PRB of the downlink BWP of the first cell and / or the number of PRBs included in the downlink BWP, the bandwidth corresponding to the frequency domain resource allocation of the PDSCH scheduled by the PDCCH of the RA-RNTI scrambling code corresponding to the first cell is the bandwidth of the downlink BWP of the first cell determined based on the UL WUS configuration of the first cell; otherwise, the bandwidth corresponding to the frequency domain resource allocation of the PDSCH scheduled by the PDCCH of the RA-RNTI scrambling code corresponding to the first cell is the bandwidth corresponding to the CORSET0 of the first cell.

[0279] It should be noted that the above embodiments only illustrate the division of the above functional modules when implementing the device. In actual applications, the above functions can be assigned to different functional modules according to actual needs, that is, the content structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0280] Regarding the apparatus in the above embodiments, the specific manner in which each module performs its operation has been described in detail in the embodiments related to the method, and will not be elaborated upon here. For details not described in detail in the apparatus embodiments, please refer to the above method embodiments.

[0281] Please refer to Figure 12, which shows a schematic diagram of a communication device provided in one embodiment of this application. The communication device 1200 may include a processor 1201, a transceiver 1202, and a memory 1203. The transceiver 1202 is used to implement sending and / or receiving functions, such as implementing the functions of the sending module and / or receiving module described above. The processor can be used to implement other processing functions or control sending and / or receiving, such as implementing the functions of the processing module described above.

[0282] The processor 1201 includes one or more processing cores. The processor 1201 executes various functional applications and information processing by running software programs and modules.

[0283] The transceiver 1202 may include a receiver and a transmitter. For example, the receiver and transmitter may be implemented as the same wireless communication component, which may include a wireless communication chip and a radio frequency antenna.

[0284] The memory 1203 can be connected to the processor 1201 and the transceiver 1202.

[0285] The memory 1203 can be used to store computer programs executed by the processor, and the processor 1201 is used to execute the computer programs.

[0286] In some embodiments, when the communication device is a terminal device, the transceiver 1202 is used to receive a first DCI, the first DCI including first indication information, the first indication information being used to indicate whether a first downlink channel or signal carries indication information for determining the Type 0-PDCCH CSS of a first cell, wherein the first downlink channel or signal is the first DCI or a PDSCH scheduled by the first DCI, and the Type 0-PDCCH CSS is determined based on at least one of the following: second indication information, the second indication information being used to determine the CORESET0 of the first cell; third indication information, the third indication information being used to determine the search space set 0 of the first cell; and fourth indication information, the fourth indication information being used to determine a first offset value.

[0287] In some embodiments, when the communication device is a network device, the transceiver 1202 is used to transmit a first DCI, the first DCI including first indication information, the first indication information being used to indicate whether a first downlink channel or signal carries indication information for determining the Type 0-PDCCH CSS of a first cell, wherein the first downlink channel or signal is the first DCI or a PDSCH scheduled by the first DCI, and the Type 0-PDCCH CSS is determined based on at least one of the following: second indication information, the second indication information being used to determine the CORESET0 of the first cell; third indication information, the third indication information being used to determine the search space set 0 of the first cell; and fourth indication information, the fourth indication information being used to determine a first offset value.

[0288] In some embodiments, when the communication device is a terminal device or a network device, the processor 1201 is used to determine a first CORSET corresponding to a first cell, and the first CORSET is used to receive a RAR from the first cell.

[0289] For details not described in this embodiment, please refer to the embodiments above, which will not be repeated here.

[0290] Furthermore, the memory can be implemented by any type of volatile or non-volatile storage device or a combination thereof, including but not limited to: magnetic disks or optical disks, electrically erasable programmable read-only memory, erasable programmable read-only memory, statically accessible memory, read-only memory, magnetic memory, flash memory, and programmable read-only memory.

[0291] This application also provides a computer-readable storage medium storing a computer program for execution by a processor to implement the aforementioned wireless communication method. In some embodiments, the computer-readable storage medium may include ROM (Read-Only Memory), RAM (Random-Access Memory), SSD (Solid State Drives), or optical disc, etc. The random access memory may include ReRAM (Resistance Random Access Memory) and DRAM (Dynamic Random Access Memory).

[0292] This application also provides a chip, which includes programmable logic circuits and / or program instructions, and is used to implement the above-described wireless communication method when the chip is running.

[0293] This application also provides a computer program product, which includes computer instructions stored in a computer-readable storage medium. A processor reads and executes the computer instructions from the computer-readable storage medium to implement the above-described wireless communication method.

[0294] It should be understood that in the various embodiments of this application, the sequence number of each process does not imply 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 this application.

[0295] It should be noted that, without conflict, the various embodiments and / or technical features described in this application can be arbitrarily combined with each other, and the resulting technical solutions should also fall within the protection scope of this application.

[0296] It should be understood that the term "instruction" mentioned in the embodiments of this application can be a direct instruction, an indirect instruction, or an indication of a relationship. For example, A instructing B can mean that A directly instructs B, such as B being able to obtain information through A; it can also mean that A indirectly instructs B, such as A instructing C, so B can obtain information through C; or it can mean that there is a relationship between A and B.

[0297] In the description of the embodiments of this application, the term "correspondence" may indicate that there is a direct or indirect correspondence between two things, or that there is an association between two things, or that there is a relationship of instruction and being instructed, configuration and being configured, etc.

[0298] In some embodiments of this application, "predefined" can be achieved by pre-storing corresponding codes, tables, or other means that can be used to indicate relevant information in the device (e.g., including terminal devices and network devices). This application does not limit the specific implementation method. For example, predefined can refer to what is defined in the protocol.

[0299] In some embodiments of this application, the term "protocol" may refer to standard protocols in the field of communications, such as LTE protocols, NR protocols, and related protocols applied in future communication systems. This application does not limit the scope of these protocols.

[0300] In this article, "multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0301] In this article, "greater than or equal to" can mean greater than or equal to, and "less than or equal to" can mean less than or equal to.

[0302] Furthermore, the step numbers described herein are merely illustrative of one possible execution order between steps. In some other embodiments, the steps may not be executed in the order of their numbers, such as two steps with different numbers being executed simultaneously, or two steps with different numbers being executed in the reverse order of the illustration. This application does not limit this.

[0303] Those skilled in the art will recognize that the functions described in the embodiments of this application in one or more of the above examples can be implemented using hardware, software, firmware, or any combination thereof. When implemented using software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or code on a computer-readable medium. Computer-readable media include computer storage media and communication media, wherein communication media include any medium that facilitates the transfer of a computer program from one place to another. Storage media can be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0304] The above description is merely an exemplary embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A wireless communication method, characterized in that, The method is executed by a terminal device, and the method includes: The system receives first downlink control information (DCI), which includes first indication information. This first indication information indicates whether a first downlink channel or signal carries indication information for determining the Type 0-PDCCH common search space (CSS) of the first cell. The first downlink channel or signal is the first DCI or a Physical Downlink Shared Channel (PDSCH) scheduled by the first DCI. The Type 0-PDCCH CSS is determined based on at least one of the following: The second indication information is used to determine the control resource set CORESET0 of the first cell; The third indication information is used to determine the search space set 0 of the first cell; The fourth indication information is used to determine the first offset value.

2. The method according to claim 1, characterized in that, The first offset value is the SSB subcarrier offset k of the synchronization signal block of the first cell. SSB ;or, The first offset value is the offset between the starting position of CORESET0 before the system message update of the first cell and the starting position of CORESET0 after the system message update; or, The first offset value is the offset between the starting position of the SSB-Common Resource Block (CRB) before the system message update of the first cell and the starting position of the SSB-CRB after the system message update.

3. The method according to claim 1 or 2, characterized in that, The first DCI includes a short message indication field, and the first indication information includes a status in the short message indication field; and / or, The first DCI includes a short message field, and the first indication information includes at least one bit in the short message field.

4. The method according to claim 3, characterized in that, When the short message indication field indicates a "00" state, the first indication information is used to indicate that the first downlink channel or signal carries the indication information of the Type0-PDCCH CSS; or, When the short message indication field indicates a "00" state and at least one bit in the short message field indicates a preset value, the first indication information is used to indicate that the first downlink channel or signal carries the indication information of the Type0-PDCCH CSS. or, When at least one bit in the short message field indicates a preset value, the first indication information is used to indicate that the first downlink channel or signal carries the indication information of the Type0-PDCCH CSS.

5. The method according to any one of claims 1 to 4, characterized in that, The first DCI includes at least one of the following information fields, and the second indication information includes at least one bit from the following at least one information field: Short message field, Virtual Resource Block (VRB) to Physical Resource Block (PRB) mapping field, Modulation and Coding Scheme (MCS) field, Transport Block (TB) quantization field, Tracking Reference Signal (TRS) availability indication field, and reserved bits.

6. The method according to any one of claims 1 to 5, characterized in that, The first DCI includes at least one of the following information fields, and the third indication information includes at least one bit from the following at least one information field: Short message field, VRB to PRB mapping field, MCS field, TB quantization field, TRS availability indicator field, reserved bits.

7. The method according to any one of claims 1 to 6, characterized in that, The first DCI includes at least one of the following information fields, and the fourth indication information includes at least one bit from the following at least one information field: Short message field, VRB to PRB mapping field, MCS field, TB quantization field, TRS availability indicator field, reserved bits.

8. The method according to any one of claims 1 to 4, characterized in that, The first downlink channel or signal is the first DCI, and the first DCI includes the following information fields: Short message indication field, short message field, second indication information, third indication information, fourth indication information, reserved bits.

9. The method according to any one of claims 1 to 4, characterized in that, When the first downlink channel or signal is a PDSCH scheduled by the first DCI, the Media Access Control (MAC) control element (CE) carried in the PDSCH includes at least one of the second indication information, the third indication information, and the fourth indication information.

10. The method according to any one of claims 1 to 9, characterized in that, The first indication information is used to indicate whether the first downlink channel or signal carries the second indication information, the third indication information, and the fourth indication information; or, The first indication information is used to indicate whether the fourth indication information is carried in the first downlink channel or signal; or, The first indication information is used to indicate whether the first downlink channel or signal carries the second indication information and the fourth indication information; or, The first indication information is used to indicate whether the third indication information is carried in the first downlink channel or signal.

11. The method according to any one of claims 1 to 10, characterized in that, If, based on the first indication information, it is determined that the first downlink channel or signal does not carry the second indication information and the third indication information, the CORESET0 of the first cell and the search space set 0 of the first cell are determined based on the SSB of the first cell; or, If, based on the first indication information, it is determined that the first downlink channel or signal does not carry the third indication information, the search space set 0 of the first cell is determined based on the SSB of the first cell; or... If it is determined from the first indication information that the first downlink channel or signal does not carry the second indication information and the fourth indication information, the CORESET0 of the first cell remains unchanged after the system message is updated.

12. The method according to any one of claims 1 to 11, characterized in that, The first DCI includes a short message field, which is used to determine system message updates; and / or, The first DCI includes a short message indication field, which indicates the presence of a short message or indicates a "00" state.

13. The method according to any one of claims 1 to 12, characterized in that, The first DCI is the DCI of the Paging-Radio Network Temporary Identifier (P-RNTI) scrambling code in the first cell.

14. A wireless communication method, characterized in that, The method is performed by a network device, and the method includes: A first downlink control information (DCI) is transmitted, the first DCI including first indication information. The first indication information is used to indicate whether a first downlink channel or signal carries indication information for determining the Type 0-PDCCH common search space (CSS) of the first cell. The first downlink channel or signal is the first DCI or a Physical Downlink Shared Channel (PDSCH) scheduled by the first DCI. The Type 0-PDCCH CSS is determined based on at least one of the following: The second indication information is used to determine the control resource set CORESET0 of the first cell; The third indication information is used to determine the search space set 0 of the first cell; The fourth indication information is used to determine the first offset value.

15. The method according to claim 14, characterized in that, The first offset value is the SSB subcarrier offset k of the synchronization signal block of the first cell. SSB ;or, The first offset value is the offset between the starting position of CORESET0 before the system message update of the first cell and the starting position of CORESET0 after the system message update; or, The first offset value is the offset between the starting position of the SSB-Common Resource Block (CRB) before the system message update of the first cell and the starting position of the SSB-CRB after the system message update.

16. The method according to claim 14 or 15, characterized in that, The first DCI includes a short message indication field, and the first indication information includes a status in the short message indication field; and / or, The first DCI includes a short message field, and the first indication information includes at least one bit in the short message field.

17. The method according to claim 16, characterized in that, When the short message indication field indicates a "00" state, the first indication information is used to indicate that the first downlink channel or signal carries the indication information of the Type0-PDCCH CSS; or, When the short message indication field indicates a "00" state and at least one bit in the short message field indicates a preset value, the first indication information is used to indicate that the first downlink channel or signal carries the indication information of the Type0-PDCCH CSS. or, When at least one bit in the short message field indicates a preset value, the first indication information is used to indicate that the first downlink channel or signal carries the indication information of the Type0-PDCCH CSS.

18. The method according to any one of claims 14 to 17, characterized in that, The first DCI includes at least one of the following information fields, and the second indication information includes at least one bit from the following at least one information field: Short message field, Virtual Resource Block (VRB) to Physical Resource Block (PRB) mapping field, Modulation and Coding Scheme (MCS) field, Transport Block (TB) quantization field, Tracking Reference Signal (TRS) availability indication field, and reserved bits.

19. The method according to any one of claims 14 to 18, characterized in that, The first DCI includes at least one of the following information fields, and the third indication information includes at least one bit from the following at least one information field: Short message field, VRB to PRB mapping field, MCS field, TB quantization field, TRS availability indicator field, reserved bits.

20. The method according to any one of claims 14 to 19, characterized in that, The first DCI includes at least one of the following information fields, and the fourth indication information includes at least one bit from the following at least one information field: Short message field, VRB to PRB mapping field, MCS field, TB quantization field, TRS availability indicator field, reserved bits.

21. The method according to any one of claims 14 to 17, characterized in that, The first downlink channel or signal is the first DCI, and the first DCI includes the following information fields: Short message indication field, short message field, second indication information, third indication information, fourth indication information, reserved bits.

22. The method according to any one of claims 14 to 17, characterized in that, When the first downlink channel or signal is a PDSCH scheduled by the first DCI, the Media Access Control (MAC) control element (CE) carried in the PDSCH includes at least one of the second indication information, the third indication information, and the fourth indication information.

23. The method according to any one of claims 14 to 22, characterized in that, The first indication information is used to indicate whether the first downlink channel or signal carries the second indication information, the third indication information, and the fourth indication information; or, The first indication information is used to indicate whether the fourth indication information is carried in the first downlink channel or signal; or, The first indication information is used to indicate whether the first downlink channel or signal carries the second indication information and the fourth indication information; or, The first indication information is used to indicate whether the third indication information is carried in the first downlink channel or signal.

24. The method according to any one of claims 14 to 23, characterized in that, If, based on the first indication information, it is determined that the first downlink channel or signal does not carry the second indication information and the third indication information, the CORESET0 of the first cell and the search space set 0 of the first cell are determined based on the SSB of the first cell; or, If, based on the first indication information, it is determined that the first downlink channel or signal does not carry the third indication information, the search space set 0 of the first cell is determined based on the SSB of the first cell; or... If it is determined from the first indication information that the first downlink channel or signal does not carry the second indication information and the fourth indication information, the CORESET0 of the first cell remains unchanged after the system message is updated.

25. The method according to any one of claims 14 to 24, characterized in that, The first DCI includes a short message field, which is used to determine system message updates; and / or, The first DCI includes a short message indication field, which indicates the presence of a short message or indicates a "00" state.

26. The method according to any one of claims 14 to 25, characterized in that, The first DCI is the DCI of the Paging-Radio Network Temporary Identifier (P-RNTI) scrambling code in the first cell.

27. A wireless communication method, characterized in that, The method is performed by a terminal device or a network device, and the method includes: A first control resource set (CORSET) corresponding to the first cell is determined. The first CORSET is used to receive the random access response (RAR) from the first cell.

28. The method according to claim 27, characterized in that, The first CORSET is determined based on the downlink bandwidth portion (BWP) of the first cell, and the downlink BWP is determined based on the uplink wake-up signal (UL WUS) configuration of the first cell.

29. The method according to claim 28, characterized in that, The UL WUS configuration is used to determine at least one of the following: the starting physical resource block (PRB) of the downlink BWP, the number of PRBs included in the downlink BWP, the first absolute frequency point A, the first carrier offset value, the first subcarrier spacing (SCS), and the second SCS; wherein the first SCS is the SCS corresponding to the first carrier offset value, and the second SCS is the SCS corresponding to the downlink BWP.

30. The method according to claim 29, characterized in that, The UL WUS configuration includes downlink BWP indication information, which is used to indicate the starting PRB of the downlink BWP and / or the number of PRBs included in the downlink BWP.

31. The method according to claim 29 or 30, characterized in that, The starting PRB of the downlink BWP and / or the number of PRBs included in the downlink BWP are determined based on the second SCS.

32. The method according to any one of claims 29 to 31, characterized in that, The first SCS and / or the second SCS are determined based on any one of the following information: The UL WUS configuration; The SCS corresponding to the synchronization signal block SSB in the first cell; The SCS is determined by the common subcarrier spacing parameters in the SSB of the first cell; Predefined SCS.

33. The method according to claim 27, characterized in that, The frequency domain start position corresponding to the first CORSET is determined based on the UL WUS configuration of the first cell.

34. The method according to claim 33, characterized in that, The UL WUS configuration is used to determine at least one of the following: second absolute frequency point A, SSB subcarrier offset k. SSB The third carrier offset value is a second carrier offset value and a third SCS; wherein the third SCS is the SCS corresponding to the second carrier offset value.

35. The method according to claim 34, characterized in that, When the spectrum corresponding to the first cell is a time-division duplex (TDD) spectrum, the second absolute frequency point A is also used to determine the network energy-saving NES uplink cell configuration information.

36. The method according to claim 34 or 35, characterized in that, The third SCS is determined based on any one of the following information: The UL WUS configuration; The SCS corresponding to the synchronization signal block SSB in the first cell; The SCS is determined by the common subcarrier spacing parameters in the SSB of the first cell; Predefined SCS.

37. The method according to claim 27, characterized in that, The first CORSET is CORSET0 of the first cell.

38. The method according to claim 37, characterized in that, The CORSET0 of the first cell is determined based on the UL WUS configuration of the first cell; or, The CORSET0 of the first cell is determined based on the main information block (MIB) of the first cell.

39. The method according to any one of claims 27 to 38, characterized in that, The bandwidth corresponding to the frequency domain resource allocation of the Physical Downlink Control Channel (PDCCH) for the Physical Downlink Shared Channel (PDSCH) scheduled by the Physical Downlink Control Channel (PDCCH) for the Random Access Radio Network Temporary Identifier (RA-RNTI) scrambling code of the first cell is the bandwidth corresponding to CORSET0 of the first cell; or those, The bandwidth corresponding to the frequency domain resource allocation of the PDSCH of the PDCCH scheduling of the RA-RNTI scrambling code of the first cell is the downlink BWP bandwidth of the first cell determined based on the UL WUS configuration of the first cell.

40. The method according to any one of claims 27 to 39, characterized in that, When the UL WUS configuration is used to determine the starting PRB and / or the number of PRBs included in the downlink BWP of the first cell, the bandwidth corresponding to the frequency domain resource allocation of the PDSCH of the PDCCH scheduling of the RA-RNTI scrambling code of the first cell is the bandwidth of the downlink BWP of the first cell determined based on the UL WUS configuration of the first cell. Otherwise, the bandwidth corresponding to the frequency domain resource allocation of the PDSCH of the PDCCH scheduling of the RA-RNTI scrambling code of the first cell is the bandwidth corresponding to the CORSET0 of the first cell.

41. A wireless communication device, characterized in that, The device includes: A receiving module is configured to receive first downlink control information (DCI), the first DCI including first indication information, the first indication information being used to indicate whether a first downlink channel or signal carries indication information for determining the Type 0-PDCCH common search space (CSS) of a first cell, wherein the first downlink channel or signal is the first DCI or a Physical Downlink Shared Channel (PDSCH) scheduled by the first DCI, and the Type 0-PDCCH CSS is determined based on at least one of the following: The second indication information is used to determine the control resource set CORESET0 of the first cell; The third indication information is used to determine the search space set 0 of the first cell; The fourth indication information is used to determine the first offset value.

42. A wireless communication device, characterized in that, The device includes: A transmitting module is configured to transmit first downlink control information (DCI), the first DCI including first indication information. The first indication information is used to indicate whether a first downlink channel or signal carries indication information for determining the Type 0-PDCCH common search space (CSS) of a first cell. The first downlink channel or signal is the first DCI or a Physical Downlink Shared Channel (PDSCH) scheduled by the first DCI. The Type 0-PDCCH CSS is determined based on at least one of the following: The second indication information is used to determine the control resource set CORESET0 of the first cell; The third indication information is used to determine the search space set 0 of the first cell; The fourth indication information is used to determine the first offset value.

43. A wireless communication device, characterized in that, The device includes: The processing module is used to determine the first control resource set (CORSET) corresponding to the first cell, wherein the first CORSET is used to receive the random access response (RAR) from the first cell.

44. A communication device, characterized in that, The communication device includes a processor and a memory, the memory storing a computer program, the processor executing the computer program to implement the method as claimed in any one of claims 1 to 13, or the method as claimed in any one of claims 14 to 26, or the method as claimed in any one of claims 27 to 40.

45. A computer-readable storage medium, characterized in that, The storage medium stores a computer program that is executed by a processor to implement the method as claimed in any one of claims 1 to 13, or the method as claimed in any one of claims 14 to 26, or the method as claimed in any one of claims 27 to 40.

46. ​​A chip, characterized in that, The chip includes programmable logic circuitry and / or program instructions, which, when the chip is running, are used to implement the method as described in any one of claims 1 to 13, or the method as described in any one of claims 14 to 26, or the method as described in any one of claims 27 to 40.

47. A computer program product, characterized in that, The computer program product includes computer instructions stored in a computer-readable storage medium, which a processor reads from and executes to implement the method as claimed in any one of claims 1 to 13, or the method as claimed in any one of claims 14 to 26, or the method as claimed in any one of claims 27 to 40.

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