Channel transmission method, terminal and network device

Abstract

The application discloses a channel transmission method, a terminal and network equipment, and the method comprises the following steps: obtaining target transmission configuration indication (TCI) state information of a control resource set (CORESET0) with an identification value of 0; when a preset condition is met, receiving a physical downlink channel according to the target TCI state information; wherein the physical downlink channel comprises at least one of a physical downlink control channel (PDCCH) and a physical downlink shared channel (PDSCH). The network equipment and the terminal of the embodiment of the application can transmit the physical downlink channel according to the TCI state information of the CORESET0 when the preset condition is met, so that the flexibility of the physical downlink channel transmission can be improved, and the system performance is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of communication technology, in particular to a channel transmission method, a terminal and a network device. BACKGROUND

[0002] In a mobile communication system, for a physical downlink control channel (PDCCH), a terminal receives a PDCCH common search space and various parameters configured by a network device, wherein a plurality of TCI states of the PDCCH are included in a transmission control indicator (TCI) state parameter, and before the network device activates one of the TCI states through a medium access control (MAC) layer control element (CE), the terminal assumes that a de-modulation reference signal (DMRS) port of the PDCCH is quasi co-located (QCL) with a synchronization signal block (SSB) configured in initial access. Accordingly, for a physical downlink shared channel (PDSCH), before the terminal receives a TCI configured by a high layer and receives activation information, the terminal assumes that a DMRS port of the PDSCH is QCL with an SSB configured in initial access. Since the TCI of the SSB configured in initial access is pre-configured and fixed, before a certain TCI state of the PDCCH or the PDSCH is activated, the terminal considers that the DMRS port of the PDCCH or the PDSCH is QCL with the SSB, so that the terminal cannot work flexibly according to network performance, which leads to a decline in system performance. SUMMARY

[0003] Embodiments of the present application provide a channel transmission method, a terminal and a network device to solve the problem of quasi co-location of the DMRS port of the PDCCH or the PDSCH with the SSB and the decline in system performance caused by the terminal being unable to work flexibly according to network performance.

[0004] In a first aspect, embodiments of the present application provide a channel transmission method applied to a terminal side, comprising:

[0005] obtaining target transmission configuration indicator (TCI) state information of a control resource set (CORESET0) with an identifier value of 0;

[0006] The physical downlink channel is received according to the target TCI state information when a preset condition is met, and the physical downlink channel includes at least one of a physical downlink control channel (PDCCH) and a physical downlink shared channel (PDSCH).

[0007] In a second aspect, an embodiment of the present application further provides a terminal, comprising:

[0008] The first obtaining module is configured to obtain target transmission configuration indication (TCI) state information of a control resource set (CORESET) 0 with an identifier value of 0.

[0009] The first receiving module is configured to receive a physical downlink channel according to the target TCI state information when a preset condition is met, and the physical downlink channel includes at least one of a physical downlink control channel (PDCCH) and a physical downlink shared channel (PDSCH).

[0010] In a third aspect, an embodiment of the present application provides a terminal, which comprises a processor, a memory, and a computer program stored in the memory and capable of running on the processor, and when the computer program is executed by the processor, the steps of the channel transmission method described above are implemented.

[0011] In a fourth aspect, an embodiment of the present application provides a channel transmission method applied to a network device side, comprising:

[0012] Target transmission configuration indication (TCI) state information is configured for a control resource set (CORESET) 0 with an identifier value of 0.

[0013] The physical downlink channel is transmitted according to the target TCI state information when a preset condition is met, and the physical downlink channel includes at least one of a physical downlink control channel (PDCCH) and a physical downlink shared channel (PDSCH).

[0014] In a fifth aspect, an embodiment of the present application provides a network device, comprising:

[0015] The configuration module is configured to configure target transmission configuration indication (TCI) state information for a control resource set (CORESET) 0 with an identifier value of 0.

[0016] The first sending module is configured to transmit a physical downlink channel according to the target TCI state information when a preset condition is met, and the physical downlink channel includes at least one of a physical downlink control channel (PDCCH) and a physical downlink shared channel (PDSCH).

[0017] In a sixth aspect, an embodiment of the present application further provides a network device, which comprises a processor, a memory, and a computer program stored in the memory and capable of running on the processor, and when the computer program is executed by the processor, the steps of the channel transmission method described above are implemented.

[0018] In a seventh aspect, an embodiment of the present application provides a computer readable storage medium, and the computer readable storage medium stores a computer program. When the computer program is executed by a processor, the steps of the channel transmission method described above are implemented.

[0019] In this way, the network device and the terminal of the embodiment of the present application can transmit the physical downlink channel according to the TCI state information of CORESET0 when the preset condition is met, so that the flexibility of the physical downlink channel transmission can be improved, and the system performance can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the description of the embodiments of the present application. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0021] Figure 1 The flowchart shows the channel transmission method of the terminal side of the embodiment of the present application.

[0022] Figure 2 The module structure diagram shows the terminal of the embodiment of the present application.

[0023] Figure 3 The block diagram shows the terminal of the embodiment of the present application.

[0024] Figure 4 The flowchart shows the channel transmission method of the network device side of the embodiment of the present application.

[0025] Figure 5 The module structure diagram shows the network device of the embodiment of the present application.

[0026] Figure 6 The block diagram shows the network device of the embodiment of the present application. DETAILED DESCRIPTION

[0027] The exemplary embodiments of the present application will be described in detail with reference to the accompanying drawings. Although the exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided so that the present application can be more thoroughly understood and the scope of the present application can be accurately conveyed to those skilled in the art.

[0028] The terminology used in the description and the claims of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. It is further to be understood that such a mechanism that is otherwise varied to fall within the scope of the application herein, for example, the present application can be practiced otherwise than as specifically described herein. For example, the present application can be practiced using a different order of steps, or using different steps, or using different terminology. Furthermore, as used herein, the terms "comprises", "comprising", "includes", "including" and the like can be used in reference to a process, method, system or apparatus that comprises or includes steps or units that are not expressly recited in the specification, but are nonetheless included in the practice of the present application. It is to be understood that the foregoing description and specific embodiments that follow are intended as illustrative only of the principles of the application and are not intended to limit the application in any way. It is to be further understood that the application is not limited to the specific conditions or arrangements described but is susceptible to modification.

[0029] Embodiments of the application provide a channel transmission method, applied to a terminal, such as Figure 1 As shown in the figure, the method comprises the following steps:

[0030] Step 11: Obtain the target transmission configuration indication (TCI) state information of the control resource set (CORESET) 0 with an identification value of 0.

[0031] The identification value can be the Id value or the index value of the CORESET. The CORESET 0 can be configured according to the Master System Information Block (MIB) information carried by the SSB and the ServingCellConfigCommon information. Specifically, the MIB contains 8 bits, and according to the subcarrier spacing of the SSB and the CORESET 0, a predefined table is selected, each table contains 16 index values (0-15), and 4 bits in the 8 bits are used to indicate the selection of one index value in 0-15. Different index values correspond to the frequency domain length, the frequency domain position relative to the SSB, and the time domain length of the CORESET, that is, the 4 bits also indicate the frequency domain length, the frequency domain position relative to the SSB, and the time domain length of the CORESET.

[0032] Further, according to the multiplexing parameter corresponding to the index value indicated by the above-mentioned 4 bits, the Frequency Range 1 (FR1), the Frequency Range 2 (FR2), the Sub-Carrier Spacing (SCS), and the subcarrier spacing of the CORESET 0, another predefined table is selected, each table can also contain 16 index values (0-15), and the remaining 4 bits are used to indicate the selection of one of the 16 index values, so as to determine the position of the first symbol of the CORESET time domain and other information.

[0033] Step 12: receiving a physical downlink channel according to the target TCI state information when a preset condition is met.

[0034] The physical downlink channel includes at least one of a physical downlink control channel (PDCCH) and a physical downlink shared channel (PDSCH). Taking the PDCCH as an example, the system defines four different types of PDCCH search spaces (Search space):

[0035] 1. Type 0-PDCCH common search space, which is defined for the PDCCH corresponding to the remaining minimum system information (RMSI). The downlink control information (DCI) format carried in the PDCCH detected in this type of search space carries the cyclic redundancy check (CRC) of the system information radio network temporary identity (SI-RNTI) corresponding to the primary cell (Pcell).

[0036] 2. Type 0A-PDCCH common search space, which is defined for the PDCCH corresponding to the other system information (OSI). The DCI format carried in the PDCCH detected in this type of search space carries the CRC of the SI-RNTI corresponding to the Pcell.

[0037] 3. Type 1-PDCCH common search space, which is defined for the general PDCCH (or normal PDCCH). The DCI format carried in the PDCCH detected in this type of search space carries the CRC of the random access radio network temporary identity (RA-RNTI), the temporary cell radio network temporary identity (TC-RNTI), or the cell radio network temporary identity (C-RNTI) corresponding to the Pcell.

[0038] 4. Type2-PDCCH common search space, the DCI format carried in the PDCCH detected in the search space carries the CRC scrambling of the paging radio network temporary identity (P-RNTI) corresponding to the primary cell Pcell.

[0039] It is worth pointing out that the PDCCH in the physical downlink channel received according to the TCI state information of CORESET0 can be the PDCCH corresponding to the Type1-PDCCH common search space.

[0040] In the step 12, the physical downlink channel can be determined to be quasi co-located (QCL) with CORESET0 when a preset condition is met, and the physical downlink channel can be received according to the target TCI state information when the physical downlink channel is quasi co-located with CORESET0. The quasi co-located relationship between the physical downlink channel and CORESET0 can also be referred to as a default quasi co-located relationship. The preset condition refers to a condition for meeting the default quasi co-located relationship, which can be predefined or configured by a network device.

[0041] Preferably, the preset condition can include at least one of the following:

[0042] The physical downlink channel is predefined to be QCL with CORESET0. That is, the physical downlink channel is predefined to be in a QCL relationship with CORESET0. For example, the terminal can assume that the DMRS port of the PDCCH in the Type1-PDCCH common search space and the PDSCH indicated by the PDCCH are in a QCL relationship with CORESET0.

[0043] receive configuration information of at least two TCI states corresponding to a physical downlink channel, and not receive activation information of the at least two TCI states. For example, the terminal receives a CORESET configuration of a higher layer, the CORESET configuration carries more than one (i.e., two or more) TCI state information, and before a MAC layer CE activates one of the TCI states, the terminal assumes that the DMRS port of the PDCCH in the PDSCH reception process in the CORESET is in a QCL relationship with CORESET0. Or the terminal assumes that the DMRS port of the PDSCH in the PDSCH reception process in the CORESET is in a QCL relationship with CORESET0. It is worth noting that for PDCCH, when the terminal receives configuration information indicating that PDCCH corresponds to only one TCI state, if activation information for the TCI state is not received, the default QCL relationship can not be used, and the TCI state can be directly used for PDCCH reception. For PDSCH, when the terminal receives configuration information indicating that PDSCH corresponds to only one TCI state, if activation information for the TCI state is not received, only the default QCL relationship can be used, and the TCI state of CORESET0 can be used for PDSCH reception.

[0044] Further, receiving configuration information of at least two TCI states corresponding to a physical downlink channel, and not receiving activation information of the at least two TCI states includes:

[0045] Scenario one, receiving configuration information of at least two TCI states configured for a physical downlink channel for the first time, and not receiving activation information of the at least two TCI states. Taking PDSCH as an example, after the terminal receives TCI state configuration information of a higher layer for the first time, and before receiving a MAC layer CE to activate the corresponding multiple TCI states, the terminal assumes that the antenna port in one DMRS port group of the PDSCH on the serving cell is in a QCL relationship with CORESET0. For PDCCH, a similar method can be used, and therefore it is not repeated. In addition, it is worth noting that for PDSCH, when the terminal receives TCI state configuration information of a higher layer for the first time, the configuration information indicates that PDSCH corresponds to only one TCI state, and if activation information for the TCI state is not received, the terminal can also assume that the antenna port in one DMRS port group of the PDSCH on the serving cell is in a QCL relationship with CORESET0.

[0046] Or,

[0047] Scenario two, the terminal receives the configuration information of at least two TCI states reconfigured for the physical downlink channel, and does not receive the activation information of the at least two TCI states. Taking PDSCH as an example, after the terminal receives the high-layer reconfigured TCI state configuration information, and before receiving the MAC layer CE to activate the corresponding multiple TCI states, the terminal assumes that the antenna port in one DMRS port group of PDSCH on the serving cell and CORESET0 are in QCL relationship. Wherein, similar methods can be used for PDCCH, and thus will not be described again. In addition, it is worth pointing out that for PDSCH, when the terminal receives the high-layer reconfigured TCI state configuration information, the configuration information indicates that PDSCH corresponds to only one TCI state, and if the activation information for the TCI state is not received, the terminal can also assume that the antenna port in one DMRS port group of PDSCH on the serving cell and CORESET0 are in QCL relationship.

[0048] In another embodiment, when the terminal receives the configuration information of at least two TCI states reconfigured for the physical downlink channel, and does not receive the activation information of the at least two TCI states, the terminal receives the physical downlink channel according to the last activated TCI state. Taking PDSCH as an example, after the terminal receives the high-layer reconfigured TCI state configuration information, and before receiving the MAC layer CE to activate the corresponding multiple TCI states, the terminal directly uses the activated (effective) TCI state before reconfiguration.

[0049] The above introduces how to determine the default quasi-co-location relationship between the physical downlink channel and CORESET0, and the following will further introduce how to determine the TCI state information of CORESET0. Optionally, step 11 includes but is not limited to the following methods:

[0050] Method one, obtaining the target TCI state information of CORESET0 through radio resource control (RRC) signaling other than transmitting master information block (MIB). Wherein, the RRC signaling includes: a first parameter field indicating the identification value of CORESET0, and a second parameter field indicating the TCI state corresponding to CORESET0.

[0051] The method is that the system allows the network device to configure and indicate the TCI state of the CORESET0 to the terminal through other RRC signaling except MIB information after initial access. Specifically, after initial access, the network device indicates the TCI state information of the CORESET0 to the terminal through other RRC signaling except MIB information. Preferably, the configuration method can include: configuring the TCI state information of the CORESET0 by limiting the parameter rule in the high-layer signaling parameter CORESET field.

[0052] The rule of the above-mentioned limiting parameter can be:

[0053] Rule one: when the value of the controlResourceSetId in the high-layer signaling parameter ControlResourceSet field is equal to 0 (i.e., the first parameter field indicates that the identification value of the CORESET is 0), only the second parameter field (such as the tci-StatesPDCCH field) is valid, and other parameter fields are skipped or not valid.

[0054] The reference signal of the TCI state indicated by the second parameter field is a synchronization signal block (SSB), and when the second parameter field indicates that the TCI state is at least two, the index numbers of the SSBs corresponding to different TCI states are different. That is, when the value of the controlResourceSetId is equal to 0, the reference signal in the TCI state indicated by the controlResourceSetId is only the SSB, that is, the CORESET0 is only in a QCL relationship with the SSB, and only the index of the SSB is different between the multiple TCI states. Accordingly, the terminal monitors the SSB according to the index of the SSB received in the activated TCI state, and monitors the PDCCH search space of the CORESET0 corresponding to the SSB to receive the PDCCH.

[0055] Or,

[0056] Rule two: when the value of the controlResourceSetId in the high-layer signaling parameter ControlResourceSet field is equal to 0, except that the second parameter field is valid, other parameter fields can also be valid, but the configuration information indicated by the other parameter fields needs to be limited to be completely the same as the configuration information in the MIB. That is, the RRC signaling further includes other parameter fields for indicating other parameters of the CORESET0, and the other parameters indicated by the other parameter fields are the same as the parameters indicated by the MIB for the CORESET0.

[0057] For the above rules, especially rule one, the step of acquiring the target TCI state information of the CORESET0 by the terminal through the radio resource control (RRC) signaling other than the master information block (MIB) transmission can include: detecting the RRC signaling other than the MIB transmission; determining the target TCI state information of the CORESET0 according to the first parameter field and the second parameter field; and ignoring other parameter fields in the RRC signaling.

[0058] Further, when the TCI state indicated by the second parameter field is at least two, the step of acquiring the target TCI state information of the CORESET0 by the terminal through the RRC signaling other than the MIB transmission can include: receiving at least two TCI state information of the CORESET0 through the RRC signaling other than the MIB transmission, and receiving activation information for activating the TCI state of the CORESET0 through a medium access control (MAC) layer control element (CE); and determining the target TCI state information from the at least two TCI states according to the activation information. That is, when the tci-StatesPDCCH field contains multiple values, the TCI state is activated according to the normal MAC layer CE activation rule.

[0059] Method two: calculating the reception quality of the synchronization signal block (SSB) according to the received SSB; when the reception quality of the SSB is higher than the reception quality of the target SSB corresponding to the CORESET0, determining the CORESET corresponding to the SSB as the new CORESET0; and acquiring the target TCI state information of the new CORESET0.

[0060] The system allows the terminal to autonomously switch the index value of the SSB and monitor the PDCCH common search space of the corresponding CORESET0. Here, the SSB can be the SSB of the serving cell or the SSB of the target cell in the cell switching process. The following embodiment will further illustrate method two in combination with the SSB of the serving cell or the SSB of the target cell.

[0061] Taking a serving cell as an example, the system can not allow the serving cell to configure the TCI state information of the CORESET 0, and can not allow the UE-specfic search space to be associated with the CORESET 0, that is, there is no information specially telling the terminal on the CORESET 0, and all the limitations are on the broadcast information. Further, after initial access, the system allows the terminal to autonomously switch the QCL relationship between the CORESET 0 and the SSB with high signal quality according to the received SSB signal quality, that is, the terminal calculates the SSB signal quality according to the received SSB, and if the reference signal received power (RSRP) of the current SSB signal is higher than the RSRP of the SSB signal corresponding to the monitored CORESET 0, the terminal can autonomously switch to the SSB with high signal quality and listen to the CORESET 0 corresponding to the SSB. After switching to the new CORESET 0, the physical downlink channel is received according to the TCI state information of the new CORESET 0.

[0062] Taking cell switching as an example, the system does not allow the target cell to configure the TCI information of the CORESET 0, and does not allow the UE-specfic search space to be associated with the CORESET 0. During cell switching, the system allows the terminal to autonomously switch the QCL relationship between the CORESET 0 and the SSB with high signal quality according to the received SSB signal quality within the SSB set of the target cell, that is, the terminal calculates the SSB signal quality according to the received SSB within the SSB set of the target cell, and if the RSRP of the current SSB signal is higher than the RSRP of the SSB corresponding to the monitored CORESET 0, the terminal autonomously switches to the SSB with high signal quality and listens to the CORESET 0 corresponding to the SSB. After switching to the new CORESET 0, the physical downlink channel is received according to the TCI state information of the new CORESET 0.

[0063] In the channel transmission method of the embodiment of the application, the network device and the terminal can transmit the physical downlink channel according to the TCI state information of the CORESET 0 when the preset condition is met, so that the flexibility of the physical downlink channel transmission can be improved, and the system performance can be improved.

[0064] The above embodiments introduce the channel transmission method in different scenarios, and the corresponding terminal will be further introduced in combination with the drawings.

[0065] As Figure 2As shown, the terminal 200 of the embodiment of the application can realize the target transmission configuration indication TCI state information of the control resource set CORESET0 with an identification value of 0 in the above-mentioned embodiment; when the preset condition is met, the physical downlink channel is received according to the target TCI state information, and the same effect is achieved. The physical downlink channel includes at least one of a physical downlink control channel PDCCH and a physical downlink shared channel PDSCH. The terminal 200 specifically includes the following functional modules:

[0066] The first acquisition module 210 is configured to acquire target transmission configuration indication TCI state information of a control resource set CORESET0 with an identification value of 0;

[0067] The first receiving module 220 is configured to receive a physical downlink channel according to the target TCI state information when the preset condition is met. The physical downlink channel includes at least one of a physical downlink control channel PDCCH and a physical downlink shared channel PDSCH.

[0068] The first receiving module 220 includes:

[0069] The first determining submodule is configured to determine that the physical downlink channel and the CORESET0 are quasi co-located QCL when the preset condition is met.

[0070] The first receiving submodule is configured to receive the physical downlink channel according to the target TCI state information when the physical downlink channel and the CORESET0 are QCL.

[0071] The preset condition includes at least one of the following:

[0072] The physical downlink channel and the CORESET0 are pre-defined to be QCL;

[0073] Configuration information of at least two TCI states corresponding to the physical downlink channel is received, and activation information of the at least two TCI states is not received.

[0074] The configuration information of the at least two TCI states corresponding to the physical downlink channel is received, and the activation information of the at least two TCI states is not received, including:

[0075] The configuration information of the at least two TCI states configured for the physical downlink channel for the first time is received, and the activation information of the at least two TCI states is not received;

[0076] Or,

[0077] The configuration information of the at least two TCI states reconfigured for the physical downlink channel is received, and the activation information of the at least two TCI states is not received.

[0078] The terminal 200 further comprises:

[0079] The second receiving module is configured to, when receiving the configuration information of the at least two TCI states reconfigured for the physical downlink channel and not receiving the activation information of the at least two TCI states, receive the physical downlink channel according to the last activated TCI state.

[0080] The first obtaining module 210 comprises:

[0081] The first obtaining sub-module is configured to obtain the target TCI state information of the CORESET0 by transmitting radio resource control (RRC) signaling other than a master information block (MIB).

[0082] The RRC signaling further comprises: a parameter field for indicating other parameters of the CORESET0, wherein the other parameters indicated by the parameter field are the same as the parameters of the CORESET0 indicated by the MIB.

[0083] The obtaining sub-module comprises:

[0084] The detection unit is configured to detect the RRC signaling other than the MIB.

[0085] The determination unit is configured to determine the target TCI state information of the CORESET0 according to the first parameter field and the second parameter field.

[0086] The processing module is configured to ignore the parameter field for indicating other parameters in the RRC signaling.

[0087] The first obtaining module further comprises:

[0088] The second receiving sub-module is configured to, when the TCI state indicated by the second parameter field is at least two, receive, by a media access control (MAC) layer control element (CE), activation information for activating the TCI state of the CORESET0.

[0089] The second determination sub-module is configured to determine the target TCI state information from the at least two TCI states according to the activation information.

[0090] The reference signal of the TCI state indicated by the second parameter field is a synchronization signal block (SSB), and when the TCI state indicated by the second parameter field is at least two, the index numbers of the SSBs corresponding to different TCI states are different.

[0091] The first obtaining module 210 further comprises:

[0092] The computing sub-module is configured to calculate the reception quality of the SSB according to the received SSB.

[0093] The third determining sub-module is configured to determine the CORESET corresponding to the SSB as a new CORESET0 when the reception quality of the SSB is higher than the reception quality of the target SSB corresponding to the CORESET0.

[0094] The second obtaining sub-module is configured to obtain target TCI state information of the new CORESET0.

[0095] The SSB is an SSB of a serving cell or an SSB of a target cell.

[0096] It is worth pointing out that the network device and the terminal of the embodiment of the present application can transmit a physical downlink channel according to the TCI state information of the CORESET0 when a preset condition is met, so that the flexibility of the physical downlink channel transmission can be improved, and the system performance is further improved.

[0097] In order to better achieve the above-mentioned purpose, further, Figure 3 A hardware structure schematic diagram of a terminal for implementing various embodiments of the present application, the terminal 30 includes but is not limited to: a radio frequency unit 31, a network module 32, an audio output unit 33, an input unit 34, a sensor 35, a display unit 36, a user input unit 37, an interface unit 38, a memory 39, a processor 310, and a power supply 311, and the like. Those skilled in the art can understand that, Figure 3 The terminal structure shown in the figure does not constitute a limitation on the terminal, and the terminal can include more or fewer components than the illustrated components, or combine certain components, or different component arrangements. In the embodiments of the present application, the terminal includes but is not limited to a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, and a pedometer, etc.

[0098] The radio frequency unit 31 is configured to perform the following steps under the control of the processor 310: obtaining target transmission configuration indication (TCI) state information of a control resource set (CORESET) with an identifier value of 0;

[0099] When the preset condition is met, the physical downlink channel is received according to the target TCI state information; wherein the physical downlink channel includes at least one of a physical downlink control channel (PDCCH) and a physical downlink shared channel (PDSCH);

[0100] The network device and the terminal of the embodiment of the present application can transmit a physical downlink channel according to the TCI state information of the CORESET0 when a preset condition is met, so that the flexibility of the physical downlink channel transmission can be improved, and the system performance is further improved.

[0101] It should be understood that in the embodiments of the present application, the radio frequency unit 31 can be used for receiving and sending signals in the process of transmitting information or calling. Specifically, after receiving the downlink data from the base station, the radio frequency unit 31 processes the data for the processor 310. In addition, the radio frequency unit 31 sends the uplink data to the base station. Generally, the radio frequency unit 31 includes but is not limited to an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc. In addition, the radio frequency unit 31 can also communicate with the network and other devices through a wireless communication system.

[0102] The terminal provides the user with wireless broadband Internet access through the network module 32, such as helping the user to send and receive emails, browse web pages, and access streaming media, etc.

[0103] The audio output unit 33 can convert audio data received by the radio frequency unit 31 or the network module 32 or stored in the memory 39 into an audio signal and output as sound. Moreover, the audio output unit 33 can also provide audio output related to a specific function performed by the terminal 30 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 33 includes a speaker, a buzzer, and a receiver, etc.

[0104] The input unit 34 is used to receive audio or video signals. The input unit 34 can include a graphics processor (GPU) 341 and a microphone 342. The graphics processor 341 processes image data of a still picture or a video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The processed image frame can be displayed on the display unit 36. The image frame processed by the graphics processor 341 can be stored in the memory 39 (or other storage medium) or transmitted via the radio frequency unit 31 or the network module 32. The microphone 342 can receive sound and can process such sound into audio data. The processed audio data can be converted into a format that can be transmitted to a mobile communication base station via the radio frequency unit 31 in the case of a telephone call mode.

[0105] The terminal 30 also includes at least one sensor 35, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor and a proximity sensor, where the ambient light sensor can adjust the brightness of the display panel 361 according to the brightness of ambient light, and the proximity sensor can turn off the display panel 361 and / or the backlight when the terminal 30 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), and when at rest, can detect the magnitude and direction of gravity, and can be used to identify the terminal posture (such as screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer, tapping), and the like. The sensor 35 can also include a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, an infrared sensor, and the like, which will not be described here.

[0106] The display unit 36 is used to display information input by the user or information provided to the user. The display unit 36 can include a display panel 361, which can be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), and the like.

[0107] The user input unit 37 can be used to receive input digital or character information, and to generate key signal input related to the user settings and function control of the terminal. Specifically, the user input unit 37 includes a touch panel 371 and other input devices 372. The touch panel 371, also known as a touch screen, can collect user touch operations (such as user operations on or near the touch panel 371 using a finger, a stylus, or any suitable object or accessory) on or near it. The touch panel 371 can include two parts, a touch detection device and a touch controller. The touch detection device detects the user's touch position and detects the signals generated by the touch operation, and transmits the signals to the touch controller; the touch controller receives touch information from the touch detection device, and converts it into touch coordinates, and sends it to the processor 310, receives commands from the processor 310 and executes them. In addition, the touch panel 371 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 371, the user input unit 37 can also include other input devices 372. Specifically, the other input devices 372 can include, but are not limited to, a physical keyboard, function keys (such as volume control buttons, on-off buttons, etc.), trackballs, mice, joysticks, and the like, which will not be described here.

[0108] Further, the touch panel 371 can be overlaid on the display panel 361, and when the touch panel 371 detects a touch operation thereon or thereabout, it transmits the touch event to the processor 310 to determine the type of the touch event, and then the processor 310 provides a corresponding visual output on the display panel 361 according to the type of the touch event. Although in the above description, the touch panel 371 and the display panel 361 are implemented as two independent components to realize the input and output functions of the terminal, in some embodiments, the touch panel 371 and the display panel 361 can be integrated to realize the input and output functions of the terminal, which is not limited here. Figure 3

[0109] The interface unit 38 is an interface for connecting external devices with the terminal 30. For example, the external devices can include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input / output (I / O) port, a video I / O port, an earphone port, and the like. The interface unit 38 can be used to receive input (e.g., data information, power, and the like) from external devices and transmit the received input to one or more elements within the terminal 30 or can be used to transmit data between the terminal 30 and external devices.

[0110] The memory 39 can be used to store software programs and various data. The memory 39 can mainly include a storage program area and a storage data area, wherein the storage program area can store an operating system, application programs (such as a sound play function, an image play function, and the like) required by at least one function, and the like; and the storage data area can store data (such as audio data, a phone book, and the like) created according to the use of the mobile phone, and the like. In addition, the memory 39 can include a high-speed random access memory, and can also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other volatile solid-state memory device.

[0111] The processor 310 is the control center of the terminal, connects all parts of the terminal through various interfaces and lines, executes various functions of the terminal and processes data by running or executing software programs and / or modules stored in the memory 39 and calling data stored in the memory 39, and thus overall monitors the terminal. The processor 310 can include one or more processing units; preferably, the processor 310 can integrate an application processor and a modem processor, wherein the application processor mainly processes an operating system, a user interface, and application programs, and the like, and the modem processor mainly processes wireless communication. It can be understood that the above-mentioned modem processor can also not be integrated into the processor 310.

[0112] ​The terminal 30 can further include a power supply 311 (such as a battery) for powering the various components of the terminal 30. In preferred embodiments, the power supply 311 is preferably coupled to the processor 310, and when such a coupling exists, can be managed by a power management system. The power management system can be configured to manage charging, discharging, and power consumption in response to a variety of conditions.

[0113] In addition, the terminal 30 includes some function modules which are not shown here and will not be described here.

[0114] Preferably, the embodiment of the present application further provides a terminal, comprising a processor 310, a memory 39, a computer program stored in the memory 39 and executable in the processor 310, when the computer program is executed by the processor 310, each process of the above-mentioned channel transmission method embodiment is realized, and the same technical effects can be achieved, and here will not be described again to avoid repetition. Wherein, the terminal can be a wireless terminal or a wired terminal, the wireless terminal can be a device providing voice and / or other service data connectivity to users, a handheld device with wireless connection function, or other processing devices connected to a wireless modem. The wireless terminal can communicate with one or more core networks through a radio access network (RAN), and the wireless terminal can be a mobile terminal, such as a mobile phone (or called "cellular" phone) and a computer with a mobile terminal, for example, it can be a portable, pocket, handheld, built-in computer or vehicle-mounted mobile device, which exchanges language and / or data with the radio access network. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), etc. The wireless terminal can also be called a system, a subscriber unit, a subscriber station, a mobile station, a mobile, a remote station, a remote terminal, an access terminal, a user terminal, a user agent, a user device or user equipment, which is not limited here.

[0115] This invention also provides a computer-readable storage medium storing a computer program. When executed by a processor, this computer program implements the various processes of the above-described channel transmission method embodiments and achieves the same technical effects. To avoid repetition, it will not be described again here. The computer-readable storage medium may be a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, etc.

[0116] The above embodiments describe the channel transmission method of the present invention from the terminal side. The following embodiments will further describe the channel transmission method from the network device side with reference to the accompanying drawings.

[0117] like Figure 4 As shown, the channel transmission method of this invention, applied to the network device side, may include the following steps:

[0118] Step 41: Configure the Target Transport Configuration Indicator (TCI) status information for the Control Resource Set CORESET0 with an identifier value of 0.

[0119] CORESET0 can be configured based on the Master System Information Block (MIB) information and ServingCellConfigCommon information carried by the SSB. For example, the frequency domain length, frequency domain position relative to the SSB, time domain length, position of the first symbol in the time domain, and other information of CORESET0 can be configured through the MIB and ServingCellConfigCommon information.

[0120] Step 42: When the preset conditions are met, send the physical downlink channel according to the target TCI status information.

[0121] The physical downlink channel includes at least one of the physical downlink control channel (PDCCH) and the physical downlink shared channel (PDSCH).

[0122] Preferably, step 42 may include: determining that the physical downlink channel and CORESET0 are quasi-co-located QCLs when preset conditions are met; and transmitting the physical downlink channel according to the target TCI status information when the physical downlink channel and CORESET0 are quasi-co-located. The quasi-co-located relationship between the physical downlink channel and CORESET0 when preset conditions are met can also be called the default quasi-co-located relationship. The preset conditions refer to the conditions that satisfy the default quasi-co-located relationship, which can be predefined or configured by the network device.

[0123] Preferably, the above-mentioned preset conditions can include but are not limited to at least one of the following:

[0124] The physical downlink channel is predefined to be QCL with CORESET0; that is, the physical downlink channel is predefined to be in a QCL relationship with CORESET0.

[0125] Configuration information of at least two TCI states corresponding to the transmitted physical downlink channel is sent, but activation information of the at least two TCI states is not sent. For example, the network device configures a CORESET through a high layer, the CORESET configuration carries more than one TCI state information, and before a MAC layer CE activates one of the TCI states, the network device assumes that the DMRS port corresponding to the physical downlink channel in the CORESET is in a QCL relationship with CORESET0 during transmission of the physical downlink channel. It is worth noting that for PDCCH, when the configuration information indicates that the PDCCH corresponds to only one TCI state, the network device can not use the default QCL relationship mode, but directly use the TCI state to transmit the PDCCH. For PDSCH, when the configuration information indicates that the PDSCH corresponds to only one TCI state, the network device needs to send activation information to the terminal, and if the activation information for the TCI state is not sent, only the default QCL relationship mode can be used to transmit the PDSCH through the TCI state of the CORESET0.

[0126] Further, the configuration information of at least two TCI states corresponding to the transmitted physical downlink channel is sent, but the activation information of the at least two TCI states is not sent, including:

[0127] The configuration information of at least two TCI states first configured for the physical downlink channel is sent, but the activation information of the at least two TCI states is not sent; this scenario corresponds to scenario one of the terminal-side embodiment, and thus is not described here.

[0128] Alternatively, the configuration information of at least two TCI states reconfigured for the physical downlink channel is sent, but the activation information of the at least two TCI states is not sent. This scenario corresponds to scenario two of the terminal-side embodiment, and thus is not described here.

[0129] In another embodiment, when the configuration information of at least two TCI states reconfigured for the physical downlink channel has been sent, but the activation information for the at least two TCI states has not been sent, the network device sends the physical downlink channel according to the last activated TCI state. Taking PDSCH as an example, before the network device sends the MAC layer CE to activate the corresponding multiple TCI states after the network device sends the high-layer reconfiguration TCI state configuration information, the network device directly uses the activated (effective) TCI state before reconfiguration.

[0130] In addition to configuring CORESET0 through MIB and serving cell common configuration, the target TCI state information of CORESET0 can also be configured in the following way: configuring the target TCI state information of CORESET0 through radio resource control (RRC) signaling other than the main system information block (MIB) transmission. The RRC signaling includes a first parameter field indicating the identification value of CORESET0, and a second parameter field indicating the TCI state corresponding to CORESET0. This method allows the network device to configure and indicate the TCI state of CORESET0 to the terminal through RRC signaling other than MIB information after initial access. Specifically, after initial access, the network device indicates the TCI state information of CORESET0 to the terminal through RRC signaling other than MIB information. Preferably, the configuration method can include configuring the TCI state information of CORESET0 by limiting the parameter rules in the high-layer signaling parameter CORESET field. The RRC signaling also includes other parameter fields for indicating other parameters of CORESET0, and the other parameters indicated by the other parameter fields are the same as the parameters indicated by MIB for CORESET0. The rules for limiting parameters are consistent with the terminal-side embodiment description, and therefore will not be described here.

[0131] The reference signal of the TCI state indicated by the second parameter field is a synchronization signal block (SSB), and when the second parameter field indicates that the TCI state is at least two, the index numbers of the SSBs corresponding to different TCI states are different. That is, when the controlResourceSetId value is equal to 0, the reference signal in the TCI state indicated by it is only an SSB, that is, CORESET0 is only in a QCL relationship with an SSB, and only the indexes of the SSBs are different among the multiple TCI states.

[0132] Further, when the second parameter field indicates that the TCI state is at least two, the step of configuring the target TCI state information for the CORESET0 further includes: sending, by a media access medium (MAC) layer control element (CE), activation information for indicating the target TCI state information of the CORESET0 to the terminal. That is, when the TCI state information contains multiple values, the TCI state is activated by the normal MAC layer CE activation rule.

[0133] Based on the above, in the channel transmission method of the embodiment of the application, the network device and the terminal can transmit the physical downlink channel according to the TCI state information of the CORESET0 when the preset condition is met, so that the flexibility of the physical downlink channel transmission is improved, and the system performance is further improved.

[0134] The above embodiments respectively introduce in detail the channel transmission methods in different scenarios, and the following embodiment will further introduce the corresponding network device in combination with the drawings.

[0135] As shown in Figure 5 The network device 500 of the embodiment of the application can realize the method of configuring the target transmission configuration indication (TCI) state information for the control resource set (CORESET) 0 with an identification value of 0, and transmitting the physical downlink channel according to the target TCI state information when a preset condition is met, and achieve the same effect, wherein the physical downlink channel includes at least one of a physical downlink control channel (PDCCH) and a physical downlink shared channel (PDSCH). The network device 500 specifically includes the following functional modules:

[0136] The configuration module 510 is configured to configure target TCI state information for the control resource set (CORESET) 0 with an identification value of 0;

[0137] The first sending module 520 is configured to transmit the physical downlink channel according to the target TCI state information when the preset condition is met; wherein the physical downlink channel includes at least one of a physical downlink control channel (PDCCH) and a physical downlink shared channel (PDSCH).

[0138] The first sending module 520 includes:

[0139] The determination sub-module is configured to determine that the physical downlink channel is quasi co-located (QCL) with the CORESET0 when the preset condition is met;

[0140] The first sending sub-module is configured to transmit the physical downlink channel according to the target TCI state information when the physical downlink channel is quasi co-located with the CORESET0.

[0141] The preset condition includes at least one of the following:

[0142] The physical downlink channel is predefined to be QCL with CORESET0.

[0143] Configuration information of at least two TCI states corresponding to the physical downlink channel has been sent, but activation information of the at least two TCI states has not been sent.

[0144] The configuration information of the at least two TCI states corresponding to the physical downlink channel has been sent, but the activation information of the at least two TCI states has not been sent, comprising:

[0145] Configuration information of at least two TCI states first configured for the physical downlink channel has been sent, but activation information of the at least two TCI states has not been sent.

[0146] Or,

[0147] Configuration information of at least two TCI states reconfigured for the physical downlink channel has been sent, but activation information of the at least two TCI states has not been sent.

[0148] The network device 500 further comprises:

[0149] The second sending module is configured to, when the configuration information of the at least two TCI states reconfigured for the physical downlink channel has been sent, but the activation information of the at least two TCI states has not been sent, send the physical downlink channel according to the last activated TCI state.

[0150] The configuration module 510 comprises:

[0151] The first configuration submodule is configured to configure target TCI state information for CORESET0 through radio resource control (RRC) signaling other than a master information block (MIB). The RRC signaling comprises a first parameter field indicating an identification value of CORESET0 and a second parameter field indicating a TCI state corresponding to CORESET0.

[0152] The RRC signaling further comprises other parameter fields for indicating other parameters of CORESET0, and the other parameters indicated by the other parameter fields are the same as the parameters indicated by the MIB for CORESET0.

[0153] The network device 500 further comprises:

[0154] The third sending module is configured to send, through a media access control (MAC) layer control element (CE), activation information indicating the target TCI state information of CORESET0 to a terminal.

[0155] The reference signal of the TCI state indicated by the second parameter field is a synchronization signal block (SSB), and indexes of different SSBs corresponding to different TCI states are different when the second parameter field indicates that the TCI state is at least two.

[0156] It should be noted that the division of each module of the network device and the terminal above is only a logical functional division, and all or part of them can be integrated into one physical entity or physically separated in actual implementation. These modules can all be implemented in the form of software called by a processing element; all can be implemented in the form of hardware; or part of the modules can be implemented in the form of software called by a processing element, and part of the modules can be implemented in the form of hardware. For example, the determination module can be a separately established processing element, or can be integrated in a chip of the device, and in addition, the determination module can be stored in the form of program code in the memory of the device, and the function of the determination module can be called and executed by a processing element of the device. The implementation of other modules is similar. In addition, all or part of these modules can be integrated together or independently implemented. The processing element described herein can be an integrated circuit having a signal processing capability. In the implementation process, each step of the above method or each module can be completed by the integrated logic circuit of hardware or the instruction of software in the processing element.

[0157] For example, the modules above can be one or more integrated circuits configured to implement the above method, such as one or more application specific integrated circuits (ASICs), or one or more digital signal processors (DSPs), or one or more field programmable gate arrays (FPGAs), etc. For another example, when a certain module above is implemented in the form of program code called by a processing element, the processing element can be a general-purpose processor, such as a central processing unit (CPU) or other processor capable of calling program code. For another example, these modules can be integrated together to implement in the form of a system on a chip (SOC).

[0158] It is worth pointing out that the network device and the terminal of the embodiment of the application can transmit the physical downlink channel according to the TCI state information of the CORESET0 when the preset condition is met, so as to improve the flexibility of the physical downlink channel transmission, and further improve the system performance.

[0159] To achieve the above object, the embodiments of the present application further provide a network device, which comprises a processor, a memory and a computer program stored in the memory and executable in the processor, and the processor implements the steps of the channel transmission method when executing the computer program. The embodiments of the present application further provide a computer readable storage medium, which stores the computer program, and the processor implements the steps of the channel transmission method when executing the computer program.

[0160] Specifically, the embodiments of the present application further provide a network device. Figure 6 As shown in the figure, the network device 600 comprises an antenna 61, a radio frequency device 62 and a baseband device 63. The antenna 61 is connected with the radio frequency device 62. In the uplink direction, the radio frequency device 62 receives information through the antenna 61 and sends the received information to the baseband device 63 for processing. In the downlink direction, the baseband device 63 processes the information to be sent and sends it to the radio frequency device 62, and the radio frequency device 62 processes the received information and sends it out through the antenna 61.

[0161] The above frequency band processing device can be located in the baseband device 63, and the method executed by the network device in the above embodiments can be implemented in the baseband device 63, which comprises a processor 64 and a memory 65.

[0162] The baseband device 63 can comprise at least one baseband board, which is provided with a plurality of chips, as shown in the figure. Figure 6 One of the chips is, for example, the processor 64, which is connected with the memory 65 to call the program in the memory 65 and execute the operation of the network device shown in the above method embodiments.

[0163] The baseband device 63 can further comprise a network interface 66 for interacting information with the radio frequency device 62, which is, for example, a common public radio interface (CPRI).

[0164] The processor herein can be one processor or a general term of a plurality of processing elements, for example, the processor can be a CPU, an ASIC or one or more integrated circuits configured to implement the method executed by the above network device, for example: one or more microprocessors, DSPs, or one or more field programmable gate arrays (FPGA) and the like. The storage element can be one memory or a general term of a plurality of storage elements.

[0165] The memory 65 can be volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. Among them, the nonvolatile memory can be Read-Only Memory (ROM), Programmable ROM (PROM), Erasable Programmable ROM (EPROM), Electrically EPROM (EEPROM), or flash memory. The volatile memory can be Random Access Memory (RAM) used as an external cache. By way of example, and not limitation, many forms of RAM can be used, such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous Dynamic RAM (SDRAM), Double Data Rate SDRAM (DDR SDRAM), Enhanced SDRAM (ESDRAM), Synchlink DRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 65 described herein is intended to include, without being limited to, these and any other suitable types of memory.

[0166] Specifically, the network device of the embodiment of the application further comprises: a computer program stored on the memory 65 and executable on the processor 64, and the processor 64 invokes the computer program in the memory 65 to execute the method performed by the modules shown in the figure. Figure 5 The method performed by the modules shown in the figure.

[0167] Specifically, the computer program, when invoked by the processor 64, can be used to execute: configuring target transmission configuration indication (TCI) state information for a control resource set (CORESET) 0 with an identification value of 0;

[0168] When the preset condition is met, transmitting a physical downlink channel according to the target TCI state information; wherein the physical downlink channel includes at least one of a physical downlink control channel (PDCCH) and a physical downlink shared channel (PDSCH).

[0169] Specifically, the computer program, when invoked by the processor 64, can be used to execute: determining that the physical downlink channel and the CORESET 0 are quasi co-located (QCL) when the preset condition is met.

[0170] When the physical downlink channel is quasi co-located with the CORESET0, the physical downlink channel is transmitted according to the target TCI state information.

[0171] The preset condition includes at least one of the following:

[0172] The physical downlink channel is predefined to be quasi co-located with the CORESET0.

[0173] Configuration information of at least two TCI states corresponding to the physical downlink channel has been transmitted, but activation information of the at least two TCI states has not been transmitted.

[0174] The configuration information of the at least two TCI states corresponding to the physical downlink channel has been transmitted, but the activation information of the at least two TCI states has not been transmitted, including:

[0175] Configuration information of at least two TCI states first configured for the physical downlink channel has been transmitted, but activation information of the at least two TCI states has not been transmitted.

[0176] Or,

[0177] Configuration information of at least two TCI states reconfigured for the physical downlink channel has been transmitted, but activation information of the at least two TCI states has not been transmitted.

[0178] Specifically, the computer program, when invoked by the processor 64, can be used to execute: when the configuration information of the at least two TCI states reconfigured for the physical downlink channel has been transmitted, but the activation information of the at least two TCI states has not been transmitted, the physical downlink channel is transmitted according to the last activated TCI state.

[0179] Specifically, the computer program, when invoked by the processor 64, can be used to execute: configuring the target TCI state information of the CORESET0 through radio resource control (RRC) signaling other than the transmission of the master information block (MIB); wherein the RRC signaling includes: a first parameter field indicating the identification value of the CORESET0, and a second parameter field indicating the TCI state corresponding to the CORESET0.

[0180] The RRC signaling further includes: other parameter fields for indicating other parameters of the CORESET0, and the other parameters indicated by the other parameter fields are the same as the parameters indicated by the MIB for the CORESET0.

[0181] Specifically, the computer program, when invoked by the processor 64, can be used to execute: sending, by a media access control (MAC) layer control element (CE), activation information of the target TCI state information of the CORESET0 to the terminal.

[0182] The reference signal of the TCI state indicated by the second parameter field is a synchronization signal block (SSB), and when the second parameter field indicates that the TCI state is at least two, the index numbers of the SSBs corresponding to different TCI states are different.

[0183] The network device can be a base station (BTS) in a global system of mobile communication (GSM) or a code division multiple access (CDMA), can be a base station (NodeB, NB) in a wideband code division multiple access (WCDMA), can be an evolved base station (eNB or eNodeB) in LTE, or can be a relay station or an access point, or can be a base station in a future 5G network, and the like, and is not limited herein.

[0184] The network device and the terminal in the embodiment of the application can transmit a physical downlink channel according to the TCI state information of the CORESET0 when a preset condition is met, so that the flexibility of the physical downlink channel transmission is improved, and the system performance is improved.

[0185] Those skilled in the art can realize that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be realized by electronic hardware or a combination of computer software and electronic hardware. Whether the functions are realized in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to realize the described functions for each specific application, but such implementation should not be considered beyond the scope of the application.

[0186] Those skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working processes of the system, device and unit described above can refer to the corresponding processes in the foregoing method embodiments, and will not be described here.

[0187] In the embodiments of the present application, it should be understood that the disclosed apparatus and method can be implemented in other manners. For example, the embodiments of the apparatus described above are merely schematic; for example, the division of the units is only a logical function division; there can be another division manner in actual implementation; for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections between different units, or the among different units, can be indirect couplings or communication connections through some interfaces, devices or units, and can be in electrical, mechanical or other forms.

[0188] The units described as separated components can or can not be physically separated, and the components displayed as units can or can not be physical units; that is, they can be located in one place, or can be distributed on a plurality of network units. In actual implementation, some or all of the units can be selected according to actual needs to achieve the purposes of the embodiments of the present application.

[0189] In addition, each function unit in the various embodiments of the present application can be integrated in a processing unit, or each unit can exist physically as a separate unit, or two or more units can be integrated in one unit.

[0190] If the functions are implemented in the form of software function units and sold or used as independent products, they can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application essentially or the part that contributes to the prior art, or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium, and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The foregoing storage medium includes: U disk, mobile hard disk, ROM, RAM, magnetic disk or optical disk, and various other media that can store program codes.

[0191] Moreover, it is pointed out that in the device and method of the present application, obviously, the components or steps can be decomposed and / or recombined. These decompositions and / or recombinations should be considered as equivalent solutions of the present application. Also, the steps of performing the above series of processes can naturally be executed in time sequence according to the order of description, but do not necessarily have to be executed in time sequence. Some steps can be executed in parallel or independently of each other. It can be understood by those skilled in the art that all or any steps or components of the method and device of the present application can be implemented in hardware, firmware, software, or a combination thereof, in any computing device (including a processor, a storage medium, etc.) or a network of computing devices, using the basic programming skills of those skilled in the art upon reading the description of the present application.

[0192] Therefore, the object of the present application can also be achieved by running a program or a set of programs on any computing device. The computing device can be a commonly known general-purpose device. Therefore, the object of the present application can also be achieved only by providing a program product containing program code for implementing the method or device. That is, such a program product also constitutes the present application, and a storage medium storing such a program product also constitutes the present application. Obviously, the storage medium can be any commonly known storage medium or any storage medium developed in the future. It is also pointed out that in the device and method of the present application, obviously, the components or steps can be decomposed and / or recombined. These decompositions and / or recombinations should be considered as equivalent solutions of the present application. Also, the steps of performing the above series of processes can naturally be executed in time sequence according to the order of description, but do not necessarily have to be executed in time sequence. Some steps can be executed in parallel or independently of each other.

[0193] The above is the preferred embodiment of the present application, and it should be pointed out that for those skilled in the art, several improvements and refinements can be made without departing from the principles described in the present application, and these improvements and refinements are also within the scope of protection of the present application.

Claims

1. A channel transmission method applied to a terminal side, characterized in that, The method comprises: obtaining target transmission configuration indication (TCI) state information of a control resource set (CORESET) 0 with an identification value of 0; receiving a physical downlink channel according to the target TCI state information, wherein the physical downlink channel comprises a physical downlink control channel (PDCCH); the step of receiving the physical downlink channel according to the target TCI state information comprises: monitoring a PDCCH search space of the CORESET 0 corresponding to an SSB index number to receive the PDCCH, wherein the SSB index number is an SSB index number corresponding to an activated TCI state received by the terminal.

2. The channel transmission method of claim 1, wherein, the step of receiving the physical downlink channel according to the target TCI state information comprises: when a preset condition is met, determining that the physical downlink channel and the CORESET 0 are quasi co-located (QCL); when the physical downlink channel and the CORESET 0 are QCL, receiving the physical downlink channel according to the target TCI state information.

3. The channel transmission method of claim 2, wherein, the preset condition comprises: receiving configuration information of at least two TCI states corresponding to the physical downlink channel, and not receiving activation information of the at least two TCI states.

4. The channel transmission method of claim 3, wherein, receiving configuration information of at least two TCI states corresponding to the physical downlink channel, and not receiving activation information of the at least two TCI states comprises: receiving configuration information of at least two TCI states configured for the physical downlink channel for the first time, and not receiving activation information of the at least two TCI states; or receiving configuration information of at least two TCI states reconfigured for the physical downlink channel, and not receiving activation information of the at least two TCI states.

5. The channel transmission method of claim 4, wherein, The method further comprises: when receiving configuration information of at least two TCI states reconfigured for the physical downlink channel, and not receiving activation information of the at least two TCI states, receiving the physical downlink channel according to the last activated TCI state.

6. The channel transmission method of claim 1, wherein, The step of obtaining target transmission configuration indication (TCI) state information of a control resource set (CORESET) 0 with an identification value of 0 comprises: obtaining the target TCI state information of the CORESET 0 through radio resource control (RRC) signaling other than a master information block (MIB), wherein the RRC signaling comprises a first parameter field indicating the identification value of the CORESET 0, and a second parameter field indicating the TCI state corresponding to the CORESET 0.

7. The channel transmission method of claim 6, wherein, The RRC signaling further comprises other parameter fields for indicating other parameters of the CORESET 0, and the other parameters indicated by the other parameter fields are the same as the parameters of the CORESET 0 indicated by the MIB.

8. The channel transmission method of claim 7, wherein, The step of obtaining the target TCI state information of the CORESET 0 through radio resource control (RRC) signaling other than a master information block (MIB) comprises: detecting the RRC signaling other than the MIB; determining the target TCI state information of the CORESET 0 according to the first parameter field and the second parameter field; and The other parameter field in the RRC signaling is ignored.

9. The channel transmission method of claim 6, wherein, The step of obtaining the target TCI state information of the CORESET0 further includes: An activation information of a TCI state of the CORESET0 is received by a media access medium (MAC) layer control element (CE); The target TCI state information is determined from at least two TCI states according to the activation information.

10. The channel transmission method of claim 6, wherein, The reference signal of the TCI state indicated by the second parameter field is a synchronization signal block (SSB), wherein the index numbers of the SSBs corresponding to different TCI states are different.

11. The channel transmission method of claim 1, wherein, The step of obtaining the target transmission configuration indication (TCI) state information of the control resource set (CORESET) 0 with an identification value of 0 includes: The reception quality of the SSB is calculated according to the received SSB; When the reception quality of the SSB is higher than that of the target SSB corresponding to the CORESET0, the CORESET corresponding to the SSB is determined as a new CORESET0; The target TCI state information of the new CORESET0 is obtained.

12. The channel transmission method of claim 11, wherein, The SSB is an SSB of a serving cell or an SSB of a target cell.

13. A terminal, characterized by The method comprises: A first obtaining module is configured to obtain target TCI state information of a control resource set (CORESET) 0 with an identification value of 0; A first receiving module is configured to receive a physical downlink channel according to the target TCI state information, wherein the physical downlink channel includes a physical downlink control channel (PDCCH). The first receiving module is specifically configured to detect a PDCCH search space of the CORESET0 corresponding to an SSB index number to receive a PDCCH, wherein the SSB index number is an SSB index number corresponding to an activated TCI state received by a terminal.

14. A terminal, characterized by The terminal includes a processor, a memory, and a computer program stored on the memory and executable on the processor, and the computer program is executed by the processor to implement the steps of the channel transmission method according to any one of claims 1 to 12.

15. A channel transmission method applied to a network device side, comprising: The method comprises: Target TCI state information of a control resource set (CORESET) 0 with an identification value of 0 is configured; A physical downlink channel is transmitted according to the target TCI state information, wherein the physical downlink channel includes a physical downlink control channel (PDCCH). Activation information indicating the target TCI state information of the CORESET0 is sent to a terminal, so that the terminal monitors a PDCCH search space of the CORESET0 corresponding to an SSB index number to receive a PDCCH, wherein the SSB index number is an SSB index number corresponding to an activated TCI state received by the terminal.

16. The channel transmission method of claim 15, wherein, The step of transmitting a physical downlink channel according to the target TCI state information includes: When a preset condition is met, it is determined that the physical downlink channel and the CORESET0 are quasi co-located (QCL); When the physical downlink channel and the CORESET0 are quasi co-located, the physical downlink channel is transmitted according to the target TCI state information.

17. The channel transmission method of claim 16, wherein, The preset condition includes: The configuration information of the at least two TCI states corresponding to the physical downlink channel has been sent, but the activation information of the at least two TCI states has not been sent.

18. The channel transmission method of claim 17, wherein, The configuration information of the at least two TCI states corresponding to the physical downlink channel has been sent, but the activation information of the at least two TCI states has not been sent, including: The configuration information of the at least two TCI states first configured for the physical downlink channel has been sent, but the activation information of the at least two TCI states has not been sent. Or, The configuration information of the at least two TCI states reconfigured for the physical downlink channel has been sent, but the activation information of the at least two TCI states has not been sent.

19. The channel transmission method of claim 18, wherein, Further comprising: When the configuration information of the at least two TCI states reconfigured for the physical downlink channel has been sent, but the activation information of the at least two TCI states has not been sent, the physical downlink channel is sent according to the last activated TCI state.

20. The channel transmission method of claim 15, wherein, The step of configuring target transmission configuration indication TCI state information for a control resource set CORESET0 with an identification value of 0 includes: The target TCI state information is configured for the CORESET0 through radio resource control RRC signaling other than a main system information block MIB; wherein the RRC signaling includes a first parameter field indicating the identification value of the CORESET0, and a second parameter field indicating the TCI state corresponding to the CORESET0.

21. The channel transmission method of claim 20, wherein, The RRC signaling further includes other parameter fields for indicating other parameters of the CORESET0, and the other parameters indicated by the other parameter fields are the same as the parameters indicated by the MIB for the CORESET0.

22. The channel transmission method of claim 20, wherein, After the step of configuring the target TCI state information for the CORESET0, further comprising: The target TCI state information of the CORESET0 is sent to the terminal through a media access medium MAC layer control element CE.

23. The channel transmission method of claim 20, wherein, The reference signal of the TCI state indicated by the second parameter field is a synchronization signal block SSB, wherein the index numbers of the SSBs corresponding to different TCI states are different.

24. A network device, comprising: Including: A configuration module is configured to configure target transmission configuration indication TCI state information for a control resource set CORESET0 with an identification value of 0; A first sending module is configured to send a physical downlink channel according to the target TCI state information; wherein the physical downlink channel includes a physical downlink control channel PDCCH; The first sending module is specifically configured to send activation information of the target TCI state information of the CORESET0 to the terminal, so that the terminal monitors the PDCCH search space of the CORESET0 corresponding to the SSB index number to receive the PDCCH, wherein the SSB index number is the SSB index number corresponding to the activated TCI state received by the terminal.

25. A network device, comprising: The network device comprises a processor, a memory, and a computer program stored on the memory and executable on the processor, and the processor implements the steps of the channel transmission method according to any one of claims 15 to 23 when executing the computer program.

26. A computer-readable storage medium, characterized in that, The computer program is stored on the computer readable storage medium, and the processor implements the steps of the channel transmission method according to any one of claims 1 to 12 or 15 to 23 when executing the computer program.

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