Method for determining quasi co-location (QCL) parameters and related products

Abstract

Embodiments of the present application disclose a method for determining quasi co-location (QCL) parameters and related products, applied to a terminal. The method comprises: obtaining indication information, wherein the indication information comprises information indicating a first transmission configuration indication (TCI) state and / or a second TCI state; and determining validity of QCL parameters corresponding to the first TCI state and / or the second TCI state according to the indication information. In this way, the validity of the QCL parameters corresponding to the two TCI states can be determined from the QCLs corresponding to the two TCI states according to the indication information, so as to ensure smoothness of information interaction and reliable decoding of data.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of communication, in particular to a quasi co-location (QCL) parameter determination method and related products. BACKGROUND

[0002] In a device high-speed moving scenario such as a high-speed train scenario, high-speed movement will have a great impact on network or terminal performance, so in this scenario, one of the current solutions is to use a Doppler pre-compensation scheme to reduce the impact of device high-speed movement on network or terminal or system performance. A transmission configuration indicator state (TCI-State) can generally include one or more QCL types, and a QCL type can include one or more QCL parameters. However, in the case of applying the Doppler pre-compensation scheme, there is currently no clear solution to determine which QCL type parameters are meaningful or meaningless, which is not conducive to information exchange. SUMMARY

[0003] Embodiments of the present application provide a quasi co-location (QCL) parameter determination method and related products to determine the effectiveness of the respective QCL parameters of two TCI states, thereby ensuring smooth information exchange and reliable data decoding.

[0004] In a first aspect, the embodiments of the present application provide a quasi co-location (QCL) parameter determination method applied to a terminal, which includes:

[0005] Obtaining indication information including information indicating a first transmission configuration indicator state (TCI state) and / or a second TCI state;

[0006] Determining the effectiveness of the QCL parameters corresponding to the first TCI state and / or the second TCI state according to the indication information.

[0007] In a second aspect, the embodiments of the present application provide a QCL parameter determination method applied to a network device, which includes:

[0008] Sending indication information including information indicating a first transmission configuration indicator state (TCI state) and / or a second TCI state;

[0009] Determining the effectiveness of the QCL parameters corresponding to the first TCI state and / or the second TCI state according to the indication information.

[0010] In a third aspect, an embodiment of the present application provides a determination apparatus of QCL parameters, applied to a terminal, and the apparatus comprises:

[0011] an acquisition unit configured to acquire indication information, wherein the indication information comprises information indicating a first transmission configuration indication state (TCI state) and / or a second TCI state;

[0012] a determination unit configured to determine validity of QCL parameters corresponding to the first TCI state and / or the second TCI state according to the indication information.

[0013] In a fourth aspect, an embodiment of the present application provides a determination apparatus of QCL parameters, applied to a network device, and the apparatus comprises:

[0014] a sending unit configured to send indication information, wherein the indication information comprises information indicating a first transmission configuration indication state (TCI state) and / or a second TCI state;

[0015] a determination unit configured to determine validity of QCL parameters corresponding to the first TCI state and / or the second TCI state according to the indication information.

[0016] In a fifth aspect, an embodiment of the present application provides a terminal, comprising a processor, a memory, a communication interface, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the processor, and the programs comprise instructions for performing steps in any method of the first aspect of the embodiments of the present application.

[0017] In a sixth aspect, an embodiment of the present application provides a network device, comprising a processor, a memory, a communication interface, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the processor, and the programs comprise instructions for performing steps in any method of the second aspect of the embodiments of the present application.

[0018] In a seventh aspect, an embodiment of the present application provides a chip, comprising a processor configured to call and run a computer program from a memory, so that a device installed with the chip performs part or all steps described in any method of the first aspect or the second aspect of the embodiments of the present application.

[0019] In an eighth aspect, an embodiment of the present application provides a chip module, comprising the chip described in the seventh aspect of the embodiments of the present application.

[0020] In a ninth aspect, an embodiment of the present application provides a computer readable storage medium, wherein the computer readable storage medium stores a computer program for electronic data exchange, and the computer program causes a computer to perform some or all of the steps described in any method of the first aspect or the second aspect of the embodiments of the present application.

[0021] It can be seen that, in the embodiments of the present application, the terminal receives indication information from the network device, the indication information includes information indicating a first transmission configuration indication state (TCI state) and / or a second TCI state, and then determines the validity of the QCL parameters corresponding to the first TCI state and / or the second TCI state according to the indication information. In this way, the validity of the QCL parameters corresponding to the two TCI states can be determined from the QCLs corresponding to the two TCI states according to the indication information, so as to ensure the smoothness of information interaction and the reliable decoding of data. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0023] Figure 1a is a system architecture diagram of an example communication system provided by an embodiment of the present application;

[0024] Figure 1b is a structural schematic diagram of a terminal provided by an embodiment of the present application;

[0025] Figure 1c is a structural schematic diagram of a network device provided by an embodiment of the present application;

[0026] Figure 2a is a flowchart of a determination method of a QCL parameter provided by an embodiment of the present application;

[0027] Figure 2b is a determination diagram of a TCI state provided by an embodiment of the present application;

[0028] Figure 3 is a function unit component block diagram of a determination apparatus of a QCL parameter provided by an embodiment of the present application;

[0029] Figure 4 is a function unit component block diagram of another determination apparatus of a QCL parameter provided by an embodiment of the present application;

[0030] Figure 5 is a function unit composition block diagram of another QCL parameter determination device provided by an embodiment of the present application.

[0031] Figure 6 is a function unit composition block diagram of another QCL parameter determination device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0032] In order to enable persons skilled in the art to better understand the technical scheme of the present application, the technical scheme of the present application will be described in detail below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by persons skilled in the art without creative work fall within the protection scope of the present application.

[0033] The terms "first", "second", and the like in the specification and claims of the present application and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but can optionally include steps or units not listed, or can optionally include other steps or units inherent to the process, method, product or device.

[0034] In this document, the term "embodiment" means that the specific features, structures or characteristics described in connection with the embodiment can be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily mean the same embodiment, nor is it independent or alternative to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0035] In order to better understand the technical scheme of the embodiments of the present application, the technical scheme of the embodiments of the present application will be described below with reference to the drawings.

[0036] The technical scheme of the embodiments of the present application can be applied to an example communication system 100 as shown in the figure, which includes a terminal 110 and a network device 120, and the terminal 110 is in communication connection with the network device 120. Figure 1a

[0037] ​The example communication system 100 can be, for example, a Global System of Mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) system, a General Packet Radio Service (GPRS), a Long Term Evolution (LTE) system, an Advanced long term evolution (LTE-A) system, a New Radio (NR) system, an evolved system of the NR system, an LTE-based access to unlicensed spectrum (LTE-U) system, an NR-based access to unlicensed spectrum (NR-U) system, a Universal Mobile Telecommunication System (UMTS), a next generation communication system, or other communication system, etc.

[0038] Generally, a conventional communication system supports a limited number of connections and is easy to implement. However, with the development of communication technology, a mobile communication system will support not only conventional communications, but also, for example, Device to Device (D2D) communication, Machine to Machine (M2M) communication, Machine Type Communication (MTC), and Vehicle to Vehicle (V2V) communication, etc. Embodiments of the present application can also be applied to these communication systems. Optionally, the communication system in embodiments of the present application can be applied to a Carrier Aggregation (CA) scenario, a Dual Connectivity (DC) scenario, and a Standalone (SA) network deployment scenario.

[0039] The spectrum to which embodiments of the present application are applied is not limited. For example, embodiments of the present application can be applied to licensed spectrum, or unlicensed spectrum.

[0040] The terminal 110 in the embodiments of the present application can refer to a user equipment, an access terminal, a user unit, a user station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent or a user apparatus. The terminal can also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a relay device, a vehicle-mounted device, a wearable device, a terminal in a future 5G network or a terminal in a future evolved public land mobile network (PLMN), etc. The embodiments of the present application are not limited thereto. As shown in Figure 1b The terminal 110 in the terminal in the embodiments of the present application can include one or more of the following components: a processor 210, a memory 220 and a communication interface 230, the processor 210 is respectively in communication connection with the memory 220 and the communication interface 230, and the memory 220 further includes one or more programs 221.

[0041] The network device 120 in the embodiments of the present application can be a device for communicating with the terminal. The network device can be an evolved NodeB (eNB or eNodeB) in an LTE system, and can also be a wireless controller in a cloud radio access network (CRAN) scenario, or the network device can be a relay device, an access point, a vehicle-mounted device, a wearable device, a network device in a future 5G network or a network device in a future evolved PLMN network, one or a group of (including multiple antenna panels) antenna panels of a base station in a 5G system, or a network node constituting a gNB or a transmission point, such as a baseband unit (BBU), or a distributed unit (DU), etc. The embodiments of the present application are not limited thereto. As shown in Figure 1c The network device 120 in the network device in the embodiments of the present application can include one or more of the following components: a processor 310, a memory 320 and a communication interface 330, the processor 310 is respectively in communication connection with the memory 320 and the communication interface 330, and the memory 320 further includes one or more programs 321.

[0042] In some deployments, a gNB can include a centralized unit (CU) and a DU. The gNB can also include an active antenna unit (AAU). The CU implements part of the functions of the gNB, and the DU implements part of the functions of the gNB. For example, the CU is responsible for processing non-real-time protocols and services, implementing the radio resource control (RRC), and the functions of the packet data convergence protocol (PDCP) layer. The DU is responsible for processing the physical layer protocol and real-time services, implementing the functions of the radio link control (RLC) layer, the media access control (MAC) layer, and the physical (PHY) layer. The AAU implements part of the physical layer processing functions, radio frequency processing, and related functions of the active antenna. Since the information of the RRC layer eventually becomes the information of the PHY layer, or is transformed from the information of the PHY layer, under this architecture, high-layer signaling, such as RRC layer signaling, can also be considered as being sent by the DU, or by the DU+AAU. It can be understood that the network device can be a device including one or more of the CU node, the DU node, and the AAU node. In addition, the CU can be divided into a network device in the radio access network (RAN), or can be divided into a network device in the core network (CN), which is not limited in the present application.

[0043] In the embodiments of the present application, the terminal 110 or the network device 120 includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. The hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and a memory (also referred to as a main memory). The operating system can be any one or more computer operating systems that implement business processing through a process, such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a windows operating system. The application layer includes applications such as a browser, an address book, word processing software, and instant messaging software. Moreover, the embodiments of the present application do not particularly limit the specific structure of the execution subject of the method provided by the embodiments of the present application, as long as the execution subject can communicate according to the method provided by the embodiments of the present application by running a program in which the code of the method provided by the embodiments of the present application is recorded. For example, the execution subject of the method provided by the embodiments of the present application can be a terminal, or a functional module in the terminal that can invoke and execute a program.

[0044] The concepts and terms involved in the present application are defined or explained as follows.

[0045] A media access control layer control element (MAC CE) is a way of exchanging control information between a terminal and a network in addition to radio resource control (RRC) messages and non-access stratum (NAS) messages. As the name implies, it exchanges information about the MAC layer.

[0046] Quasi co-location (QCL): The signals corresponding to the antenna port pairs with QCL relationship have the same parameters, or the parameters of one antenna port can be used to determine the parameters of another antenna port with QCL relationship with the antenna port, or the two antenna ports have the same parameters, or the parameter difference between the two antenna ports is less than a certain threshold. The QCL parameters are channel large-scale parameters, which can include one or more of the following: delay spread, Doppler spread, Doppler shift, average delay, average gain, spatial Rx parameter.

[0047] In the NR protocol, the QCL relationship can be divided into multiple types based on different parameters:

[0048] QCL Type A (QCL-typeA): {Doppler shift, Doppler spread, average delay, delay spread};

[0049] QCL Type B (QCL-typeB): {Doppler shift, Doppler spread};

[0050] QCL Type C (QCL-typeC): {Doppler shift, average delay};

[0051] QCL Type D (QCL-typeD): {spatial reception parameter}; and the like.

[0052] Transmission Configuration Indicator (TCI) state: can be used to indicate the QCL information of the physical downlink control channel (PDCCH) or the physical downlink shared channel (PDSCH), and can be used to indicate which reference signal satisfies the QCL relationship with the demodulation reference signal (DMRS) of the PDCCH or the PDSCH, and then the terminal can receive and / or decode the PDCCH or the PDSCH using the same or similar spatial parameters (for example: receiving beam) as the spatial parameters of the reference signal. In the TCI state, which reference signal satisfies the QCL relationship with the DMRS of the PDCCH or the PDSCH can be indicated by a reference signal index.

[0053] TCI state, which can be used to indicate the QCL relationship between two reference signals. Each TCI state can include the index of the serving cell (ServeCell Index), the bandwidth part (BWP) identifier (ID), and the reference signal resource identifier, wherein the reference signal resource identifier can be at least one of the following: non-zero power (NZP) CSI-RS reference signal resource identifier (NZP-CSI-RS-ResourceId), non-zero power CSI-RS reference signal resource set identifier (NZP-CSI-RS-ResourceSetId), SSB index (SSB-Index), or sounding reference signal SRS resource identifier (SRS-ResourceId).

[0054] Currently, for example, NR R17 is discussing standardization enhancements for high-speed train scenarios, and it has been explicitly pointed out that network device side-based Doppler pre-compensation solutions, including Doppler pre-compensation based on transmission and reception points (TRP), or next-generation node (Next Generation Node-B, gNB), evolved node B (Evolved NodeB, eNB), remote radio head (Remote Radio Head, RRH), radio remote unit (Radio Remote Unit, RRU), transmission and reception antenna panel, etc. The meaning of the network device side-based Doppler pre-compensation is that the PDCCH or PDSCH adopts enhanced single frequency network (Single Frequency Network, SFN) transmission, and the Doppler pre-compensation is performed on a certain position (such as TRP, RRU, gNB, etc.) on the network side, so that the Doppler shifts from multiple positions are consistent, and in particular, the performance in the high-speed mobile scenario can be effectively improved. It should be noted that the above-mentioned Doppler pre-compensation scheme is only an example of the present scheme, and the implementation of the Doppler pre-compensation described in the present application is the same as or equivalent to the Doppler pre-compensation scheme named by other names. Other network side-based Doppler pre-compensation schemes are not described here. Due to Doppler pre-compensation, the validity of all or part of the QCL parameters contained in the QCL type corresponding to the TCI state needs to be re-determined, but there is no clear solution at present.

[0055] To solve the above problems, the embodiments of the present application provide a method for determining quasi co-location (QCL) parameters and related products. The following will be described in detail with reference to the accompanying drawings.

[0056] Please refer to Figure 2a , Figure 2a is a flowchart of a method for determining QCL parameters provided by the embodiments of the present application. As shown in the figure, the method comprises the following steps:

[0057] Step 201, a network device sends indication information;

[0058] Step 202, a terminal acquires the indication information.

[0059] The indication information includes information indicating a first transmission configuration indication state (TCI state) and / or a second TCI state. That is, the indication information can indicate two TCI states, or it can only indicate one TCI state.

[0060] In step 203, validity of the QCL parameter corresponding to the first TCI state and / or the second TCI state is determined according to the indication information.

[0061] In the present solution, the validity refers to determining validity of part or all of the QCL parameters contained in the TCI state. That is, when there are two or more TCI states, the QCL parameters determined to be valid can be used, or the QCL parameters determined to be invalid cannot be used. The QCL parameters corresponding to the first TCI state can be determined to be valid or invalid according to the indication information, or the QCL parameters corresponding to the second TCI state can be determined to be valid or invalid according to the indication information, or the valid part or invalid part of the QCL parameters corresponding to the first TCI state and the second TCI state respectively can be determined according to the indication information.

[0062] In particular, when determining the validity of the QCL parameter corresponding to one of the two TCI states, a target TCI state can be determined from the two TCI states first, and then the validity of the QCL parameter corresponding to the target TCI state is determined. That is, the validity of the QCL parameter corresponding to only one TCI state can be determined, and the validity of the QCL parameter corresponding to the other TCI state is opposite.

[0063] It can be seen that in the present example, the terminal receives indication information from the network device, the indication information includes information indicating the first transmission configuration indication state (TCI state) and / or the second TCI state, and then the validity of the QCL parameter corresponding to the first TCI state and / or the second TCI state is determined according to the indication information. In this way, it can be determined which QCL parameter is valid or invalid from the QCL corresponding to the two TCI states according to the indication information, or whether the QCL parameters contained in the two TCI states are valid or invalid can be determined at the same time. That is, the validity of the QCL parameter corresponding to the two TCI states can be determined according to the indication information, so as to ensure smoothness of information interaction and reliable decoding of data.

[0064] In one possible example, the QCL parameter includes a Doppler shift parameter and / or a Doppler spread parameter.

[0065] In the example, the validity of the Doppler shift parameter and / or the Doppler spread parameter corresponding to the one or both TCI states is determined according to the indication information, so as to ensure smoothness of information interaction and reliable decoding of data, and better adapt to information communication and performance improvement in a high-speed mobile scenario.

[0066] In the example, the validity of the QCL parameter corresponding to the first TCI state and / or the second TCI state is determined according to the indication information, which is applicable to both PDCCH and PDSCH, so as to ensure smoothness of information interaction and reliable decoding of data.

[0067] In a possible example, the channel corresponding to the first TCI state and the second TCI state is a physical downlink control channel (PDCCH) or a physical downlink shared channel (PDSCH).

[0068] In the example, the validity of the QCL parameter corresponding to the first TCI state and / or the second TCI state is determined according to the indication information, which is applicable to both PDCCH and PDSCH, so as to ensure smoothness of information interaction and reliable decoding of data.

[0069] In a possible example, the indication information includes a medium access control layer control element (MAC CE), downlink control information (DCI), or information corresponding to the TCI state.

[0070] In the example, the validity of the QCL parameter corresponding to the first TCI state and / or the second TCI state is determined according to any one or more of the MAC CE, the DCI, or the information corresponding to the TCI state. The determination of the validity can be based on a value corresponding to a specific bit position in the indication information, or based on values corresponding to several specific bit positions. The determination of the validity can also be based on an order of bit positions in which a preset value appears in a specific byte in the information, or based on a number of times that the preset value appears in the specific byte.

[0071] It can be seen that, in the present example, the validity of the QCL parameters corresponding to the first TCI state and / or the second TCI state is determined according to any one of the information corresponding to the MAC CE or the DCI or the TCI state, which can improve the flexibility of determining the validity of the QCL parameters, and ensure the smoothness of information interaction and the reliable decoding of data.

[0072] In one possible example, the indication information includes the MAC CE, and the determining of the validity of the QCL parameters corresponding to the first TCI state and / or the second TCI state according to the indication information includes: obtaining an indication information position corresponding to the MAC CE, the indication information position being a position of a first bit included in the MCE CE; and determining the validity of the QCL parameters corresponding to the first TCI state and / or the second TCI state according to a parameter value corresponding to the position of the first bit.

[0073] In the determination of the validity of the QCL parameters according to the MAC CE, the value of a parameter at a certain specific bit position included in the MAC CE needs to be determined first, and then the validity of the QCL parameters is determined according to the parameter value. The value of the parameter can include 0 or 1, that is, it can be set that when the value of the parameter at the bit position is 0, it is determined that the QCL parameters corresponding to the first TCI state are valid, and the QCL parameters corresponding to the second TCI state are invalid, and conversely, when the parameter value is 1, it is determined that the QCL parameters corresponding to the first TCI state are invalid, and the QCL parameters corresponding to the second TCI state are valid. Or when the value of the parameter is 0, it is determined that the Doppler shift parameter in the QCL parameters corresponding to the first TCI state is valid, and the Doppler spread parameter is invalid, and the Doppler shift parameter in the QCL parameters corresponding to the second TCI state is invalid, and the Doppler spread parameter is valid. Of course, which QCL parameters corresponding to which TCI state are valid or invalid can be determined according to requirements, which will not be described here.

[0074] For example Figure 2b As shown, Figure 2b is a determination diagram of a TCI state provided by an embodiment of the present application. As shown in the figure, the cell ID (Serving Cell ID) field of the serving cell represents the identity of the serving cell to which the MAC CE is applied, as shown in the figure, the field length is 5 bits, the ID of the control resource set (CORESET ID) field represents a control resource set, and the field length is 4 bits. TCI state ID 0,1 , TCI state ID 0,2, to indicate the TCI state configuration of the CORESET indicated by the CORESET ID. "C" is used to represent which QCL parameter corresponding to the TCI state is valid or invalid. For example: if the value of C is 1, it means that the QCL parameter corresponding to the TCI state ID 0,1 is valid or invalid; if the value of C is 0, it means that the QCL parameter corresponding to the TCI state ID 0,2 is valid or invalid, it should be noted that the QCL parameter at this time can only include the Doppler shift parameter and / or the Doppler spread parameter.

[0075] It can be seen that, in this example, the validity of the QCL parameter corresponding to the first TCI state and / or the second TCI state is determined according to the corresponding value in the specific bit position, which can ensure the smoothness of information interaction and reliable decoding of data.

[0076] In one possible example, in the case that the channels corresponding to the first TCI state and the second TCI state are the PDCCH, and the first TCI state and the second TCI state are associated with the same control resource set (coreset), the position of the first bit is the position of the first bit of the third byte contained in the MCE CE.

[0077] In this example, when determining the validity of the QCL parameter according to the MAC CE, the MAC CE indicates two TCI states, and the two TCI states are associated with the same coreset. The value of the first bit of the third byte of the MAC CE can be used to determine which of the two TCI states associated with the MAC CE corresponds to the valid or invalid QCL parameter.

[0078] It can be seen that, in this example, when the channels corresponding to the first TCI state and the second TCI state are the PDCCH, the validity of the QCL parameter can be determined according to the value of the first bit of the third byte of the MAC CE, which can ensure the smoothness of information interaction and reliable decoding of data.

[0079] In one possible example, in the case that the channels corresponding to the first TCI state and the second TCI state are the PDSCH, and the indicator C i in the MAC CE is 1, the position of the first bit is the position of the first bit of the byte where the TCI state ID i,2 is located, wherein the TCI state ID i,2The second TCI state indicated by the i-th code point in the transmission configuration indication field of the DCI corresponding to the first TCI state and the second TCI state, wherein the i is the index of the code point of the transmission configuration indication TCI field in the DCI.

[0080] The MAC CE indicates the first TCI state and the second TCI state at the same time. i The field indicates whether there is an octet containing the TCI state ID i,2 If the field is set to "1", there is an octet containing the TCI state ID i,2 If the field is set to "0", there is no octet containing the TCI state ID i,2 Since the existing MAC CE has a reserved bit R, the present scheme can use the reserved bit R to indicate the validity of the QCL parameter corresponding to a TCI state in multiple TCI states.

[0081] It can be seen that in the present example, when the channels corresponding to the first TCI state and the second TCI state are the PDSCH, the validity of the QCL parameter can be determined according to the value at the position of the first bit of the byte where the TCI state ID i,2 field is located, which can ensure the smoothness of information interaction and the reliable decoding of data.

[0082] In one possible example, before the validity of the QCL parameter corresponding to the first TCI state and / or the second TCI state is determined according to the parameter value corresponding to the position of the first bit, the method further comprises: determining that the transmission scheme of the PDSCH configured by the radio resource control RRC signaling is transmission and reception point TRP Doppler pre-compensation or next generation node gNB Doppler pre-compensation.

[0083] The TRP or gNB Doppler pre-compensation means that the PDCCH or PDSCH adopts SFN transmission, and the gNB performs Doppler pre-compensation on a certain TRP, so that the Doppler shifts from multiple TRPs or gNBs are consistent, which can effectively improve the performance in high-speed mobile scenarios. Therefore, when the transmission scheme of the PDCCH or PDSCH is configured as TRP or gNB Doppler pre-compensation, the validity of the QCL parameter when the channel corresponding to the first TCI state and / or the second TCI state is the PDCCH or PDSCH can be determined according to the indication information, wherein the PDCCH can be the PDCCH corresponding to the coreset associated with the first TCI state and the second TCI state.

[0084] It can be seen that in the present example, in the case where the transmission scheme of the PDSCH configured by RRC signaling is TRP or gNB Doppler pre-compensation, the validity of the QCL parameters corresponding to the first TCI state and the second TCI state is determined according to the indication information, which can ensure the smoothness of information interaction and stable transmission of data, and thus effectively improve the communication performance in the high-speed mobile scenario.

[0085] In one possible example, before the validity of the QCL parameters corresponding to the first TCI state and / or the second TCI state is determined according to the parameter value corresponding to the position of the first bit, the method further comprises: determining that the transmission scheme of the PDCCH corresponding to the coreset associated with the first TCI state and the second TCI state is a first transmission scheme, and the first transmission scheme is TRP (Transmission and Reception Point) Doppler pre-compensation or gNB (5G network base station) Doppler pre-compensation.

[0086] In the case where the transmission scheme of the PDCCH corresponding to the coreset associated with the first TCI state and the second TCI state is configured as TRP or gNB Doppler pre-compensation, the validity of the QCL parameters corresponding to the first TCI state and / or the second TCI state can be determined according to the indication information when the channels corresponding to the first TCI state and the second TCI state are PDCCH or PDSCH.

[0087] It can be seen that in the present example, in the case where the transmission scheme of the PDCCH corresponding to the coreset associated with the first TCI state and the second TCI state is configured as TRP or gNB Doppler pre-compensation, the validity of the QCL parameters corresponding to the first TCI state and the second TCI state is determined according to the indication information, which can ensure the smoothness of information interaction and reliable decoding of data, and thus effectively improve the communication performance in the high-speed mobile scenario.

[0088] In one possible example, the method further comprises: indicating, according to a first logical channel identifier, that the coreset configured by the MCE CE is the coreset associated with the PDCCH whose transmission scheme is the first transmission scheme.

[0089] The first logical channel identifier can be a new logical channel identifier eLCID, and the eLCID is different from an old logical channel identifier indicating that the coreset configured by the MCE CE has a transmission scheme other than the first transmission scheme.

[0090] It can be seen that, in the present example, the new logical channel identifier is used to indicate the coreset of the MCE CE configuration, which can ensure the smoothness of information interaction and reliable decoding of data.

[0091] In one possible example, the indication information includes the DCI, and the determining of the validity of the QCL parameters corresponding to the first TCI state and / or the second TCI state according to the indication information includes: determining a first field contained in the DCI; and determining the validity of the QCL parameters corresponding to the first TCI state and / or the second TCI state according to a value corresponding to a position of a second bit included in the first field.

[0092] In the determination of the validity of the QCL parameters corresponding to the first TCI state and / or the second TCI state according to the DCI, since the DCI includes multiple fields, one or several specific fields can be determined first, and then the value in the preset bit position in the specific field is used to determine the validity of the QCL parameters corresponding to the first TCI state and / or the second TCI state.

[0093] When the DCI indicates one TCI state, for example, the first TCI state, the value corresponding to the position of the second bit can be directly used to determine whether the QCL parameters contained in the currently indicated first TCI state are valid or invalid. For example, when the value is 1, it is determined that the QCL parameters contained in the first TCI state are valid.

[0094] When the DCI indicates two TCI states, that is, the DCI indicates the first TCI state and the second TCI state at the same time, the value corresponding to the position of the second bit can be used to determine whether the value in the first TCI state or the second TCI state is valid or invalid. For example, when the value is 1, it is determined that the QCL parameters contained in the first TCI state are valid or invalid. Or when the value is 1, it is determined that the Doppler shift parameter contained in the first TCI state is valid, and the Doppler spread parameter is invalid, while the Doppler shift parameter contained in the second TCI state is invalid, and the Doppler spread parameter is valid, and so on.

[0095] It can be seen that, in the present example, the value in the corresponding specific bit position of one or several fields contained in the DCI is used to determine the validity of the QCL parameters corresponding to the first TCI state and / or the second TCI state, which can ensure the smoothness of information interaction and reliable decoding of data.

[0096] In a possible example, the first field includes any one of the following fields: an Identifier for DCI formats field, a HARQ process number field, a TPC command for scheduled PUCCH field, an Antenna port field, an SRS request field, and / or a DMRS sequence initialization field.

[0097] In the example, the validity of the QCL parameter corresponding to the first TCI state and / or the second TCI state can be determined according to the value in the second bit position corresponding to a certain field, or can be determined according to the values in the second bit positions corresponding to multiple fields in the above-mentioned fields. In particular, when the validity of the QCL parameter corresponding to the first TCI state and / or the second TCI state is determined by multiple fields, the second bit positions corresponding to the multiple fields can be the same or different.

[0098] It can be seen that, in the example, the validity of the QCL parameter corresponding to the first TCI state and / or the second TCI state is determined according to the value in the second bit position corresponding to a certain field or several fields in the DCI, which can ensure the smoothness of information interaction and the reliable decoding of data.

[0099] In a possible example, the second bit position is the position of the first bit included in the first field, or is the position of the last bit included in the first field, or is the position of any one bit included in the first field.

[0100] It can be seen that, in the example, the validity of the QCL parameter corresponding to the first TCI state and / or the second TCI state is determined according to the value in the second bit position corresponding to a certain field or several fields in the DCI, which can ensure the smoothness of information interaction and the reliable decoding of data.

[0101] In a possible example, the coresetPoolIndex of the coreset associated with the PDCCH corresponding to the DCI is 0 or 1.

[0102] In the example, when the DCI indicates only one TCI state, the PDCCHs associated with the DCI corresponding to the first TCI state and the second TCI state are located in coresets belonging to different coresetPoolIndex.

[0103] It can be seen that in this example, the coresetPoolIndex of the coreset associated with the PDCCH corresponding to the DCI can be 0 or 1, and when the DCI only indicates one TCI state, the validity of the QCL parameter corresponding to the TCI state can be directly determined.

[0104] In one possible example, in the case where the DCI is used to indicate the first TCI state and the second TCI state, both the first TCI state and the second TCI state are used to represent a downlink common beam or an uplink common beam.

[0105] In the case where the DCI indicates one TCI state, the first TCI state or the second TCI state can also be used to represent a downlink common beam or an uplink common beam. When the DCI is used to represent a common beam, the DCI is scrambled by a cell radio network temporary identifier (C-RNTI), and the following fields in the DCI can be used to determine whether the DCI is used to indicate a common beam: 1. RV = all '1's, 2. MCS = all '1's, 3. NDI = 0, 4. Set to all '0's for FDRA Type 0, or all '1's for FDRA Type 1, or all '0's for dynamic Switch (same as in Table 10.2-4 of TS 38.213). The TCI field in the DCI is used to indicate a common beam, i.e., to indicate a Joint DL / UL TCI state, or a DL-only TCI state, or a UL-only TCI state.

[0106] It can be seen that in this example, both the two TCI states indicated by the DCI are used to indicate a downlink common beam or an uplink common beam, and the validity of the QCL parameter corresponding to the first TCI state and / or the second TCI state is determined according to the value in a specific bit position of one or more fields in the DCI, which can ensure the smoothness of information interaction and the reliable decoding of data.

[0107] In a possible example, the indication information comprises information corresponding to the TCI state, the information corresponding to the TCI state comprising identities of the first TCI state and the second TCI state, and the determining, according to the indication information, the validity of the QCL parameter corresponding to the first TCI state and / or the second TCI state comprises determining, according to a value corresponding to an identity in the identities of the first TCI state and the second TCI state, the validity of the QCL parameter corresponding to the first TCI state and / or the second TCI state.

[0108] The identity of the TCI state (TCI state ID) corresponding to the first TCI state and the second TCI state is different, so the value of the TCI state ID corresponding to the first TCI state and the second TCI state can be directly compared to determine which TCI state in the two TCI states corresponds to the valid or invalid QCL parameter. The comparison method can be to compare the numerical value, and can also be to directly determine which TCI state ID in the two TCI state IDs corresponds to the preset value. For example, the preset value is 1, the value of the TCI state ID corresponding to the first TCI state is 1, and the value of the TCI state ID corresponding to the second TCI state is 5, then it can be determined that the QCL parameter corresponding to the first TCI state is valid, or it is determined that the QCL parameter corresponding to the first TCI state is invalid. Or first get the combination mode of multiple TCI state IDs, determine a preset value in each combination mode, when the value of the TCI state ID corresponding to a certain TCI state is the preset value, it is determined that the QCL parameter corresponding to the TCI state is valid or invalid. For example, the combination of the values of the TCI state IDs corresponding to two TCI states has three combinations (m, n), (x, y), and (n, k). Then, it can be determined that the preset value in the (m, n) combination is m, the preset value in the (x, y) combination is y, and the preset value in the (n, k) combination is k. Or sort the values of the TCI state IDs that may appear, and determine the TCI state ID corresponding to the value in the front according to the sorting order as the TCI state for which the validity of the QCL parameter needs to be determined. For example, the values of the TCI state IDs that may appear are 1, 2, 3, 4, and 5, and the determined sorting is 1, 3, 4, 2, and 5. If the value of the TCI state ID corresponding to the first TCI state is 3 and the value of the TCI state ID corresponding to the second TCI state is 2, then it is determined that the QCL parameter corresponding to the first TCI state is valid or invalid.

[0109] It can be seen that in the present example, the validity of the QCL parameter corresponding to the first TCI state and / or the second TCI state can be directly determined according to the size of the value of the TCI state ID, which can ensure the smoothness of information interaction and reliable decoding of data.

[0110] In a possible example, the determining the validity of the QCL parameter corresponding to the first TCI state and / or the second TCI state according to the value corresponding to the identity of the first TCI state and the identity of the second TCI state includes: determining the validity of the QCL parameter corresponding to the TCI state with the minimum value corresponding to the identity of the first TCI state and the identity of the second TCI state.

[0111] For example, the PDSCH is configured or indicated with two TCI states, the value of the TCI state ID corresponding to the first TCI state is 1, and the value of the TCI state ID corresponding to the second TCI state is 5, and then the validity or invalidity of the QCL parameter corresponding to the first TCI state should be determined.

[0112] It can be seen that, in this example, the validity of the QCL parameter corresponding to the TCI state with the minimum value of the two TCI state IDs is determined, which can ensure the smoothness of information interaction and reliable decoding of data.

[0113] In a possible example, the determining the validity of the QCL parameter corresponding to the first TCI state and / or the second TCI state according to the value corresponding to the identity of the first TCI state and the identity of the second TCI state includes: determining the validity of the QCL parameter corresponding to the TCI state with the maximum value corresponding to the identity of the first TCI state and the identity of the second TCI state.

[0114] For example, the PDSCH is configured or indicated with two TCI states, the value of the TCI state ID corresponding to the first TCI state is 1, and the value of the TCI state ID corresponding to the second TCI state is 5, and then the validity or invalidity of the QCL parameter corresponding to the second TCI state should be determined.

[0115] It can be seen that, in this example, the validity of the QCL parameter corresponding to the TCI state with the maximum value of the two TCI state IDs is determined, which can ensure the smoothness of information interaction and reliable decoding of data.

[0116] In a possible example, the determining the validity of the QCL parameter corresponding to the first TCI state and / or the second TCI state according to the indication information comprises: when the channel corresponding to the first TCI state and the second TCI state is the PDSCH, the validity of the QCL parameter corresponding to the first TCI state and / or the second TCI state is the same as the validity of the QCL parameter corresponding to the first TCI state and / or the second TCI state when the channel corresponding to the first TCI state and / or the second TCI state is the PDCCH; or when the channel corresponding to the first TCI state and the second TCI state is the PDCCH, the validity of the QCL parameter corresponding to the first TCI state and / or the second TCI state is the same as the validity of the QCL parameter corresponding to the first TCI state and / or the second TCI state when the channel corresponding to the first TCI state and / or the second TCI state is the PDSCH.

[0117] The relationship between the PDCCH and the PDSCH is that the PDCCH is a PDCCH that schedules or activates the PDSCH. That is, when the channel is the PDCCH, if it is determined that the QCL parameter corresponding to the first TCI state is valid, then when the channel is the PDSCH, the QCL parameter corresponding to the first TCI state is also valid. Or when the channel is the PDSCH, if it is determined that the QCL parameter corresponding to the first TCI state is valid, then when the channel is the PDCCH, the QCL parameter corresponding to the first TCI state is also valid.

[0118] It can be seen that, in the present example, the validity of the first TCI state and / or the second first TCI state determined according to the PDSCH and the PDCCH is the same, which can improve work efficiency and ensure smoothness of information interaction and reliable decoding of data.

[0119] The QCL parameter determination apparatus provided in the embodiments of the present application can be a terminal. Specifically, the QCL parameter determination apparatus is configured to perform the steps performed by the terminal in the above QCL parameter determination method. The QCL parameter determination apparatus provided in the embodiments of the present application can include units corresponding to the respective steps.

[0120] The embodiments of the present application can divide the functional units of the QCL parameter determination apparatus according to the above method examples. For example, each functional unit can be divided according to each function, or two or more functions can be integrated in one processing unit. The integrated unit can be realized in the form of hardware or in the form of a software functional unit. The division of the units in the embodiments of the present application is illustrative, and is only a logical function division. In actual implementation, another division mode can be used.

[0121] In the case of dividing each functional unit according to each function, Figure 3 A possible structure diagram of the QCL parameter determination apparatus involved in the above embodiments is shown. As shown in the figure, the QCL parameter determination apparatus 3 includes an acquisition unit 31 configured to acquire indication information, the indication information including information indicating a first transmission configuration indication state (TCI state) and / or a second TCI state; and a determination unit 32 configured to determine validity of QCL parameters corresponding to the first TCI state and / or the second TCI state according to the indication information. Figure 3

[0122] In one possible example, the QCL parameters include a Doppler shift parameter and / or a Doppler spread parameter.

[0123] In one possible example, the channels corresponding to the first TCI state and the second TCI state are physical downlink control channels (PDCCHs) or physical downlink shared channels (PDSCHs).

[0124] In one possible example, the indication information includes a medium access control layer control element (MAC CE), downlink control information (DCI), or information corresponding to the TCI state.

[0125] In one possible example, when the indication information includes the MAC CE, the determination unit 32 is specifically configured to: acquire an indication information position corresponding to the MAC CE, the indication information position being a position of a first bit contained in the MCE CE; and determine validity of the QCL parameters corresponding to the first TCI state and / or the second TCI state according to a parameter value corresponding to the position of the first bit.

[0126] ​In a possible example, in a case that the channels corresponding to the first TCI state and the second TCI state are the PDCCH, and the first TCI state and the second TCI state are associated with a same control resource set (coreset), the position of the first bit is a position of a first bit of a third byte included in the MCE CE.

[0127] In a possible example, in a case that the channels corresponding to the first TCI state and the second TCI state are the PDSCH, and the MAC CE includes an indicator C i In a case that a value of the field is 1, the position of the first bit is a position of a first bit of a byte in which the TCI state ID i,2 In a case that a value of the field is 1, the position of the first bit is a position of a first bit of a byte in which the TCI state ID i,2 In a case that a value of the field is 1, the position of the first bit is a position of a first bit of a byte in which the TCI state ID

[0128] In a possible example, before determining the validity of the QCL parameter corresponding to the first TCI state and / or the second TCI state according to the parameter value corresponding to the position of the first bit, the apparatus 3 is further configured to determine that a transmission scheme of a PDSCH configured by radio resource control (RRC) signaling is transmission and reception point (TRP) Doppler pre-compensation or next generation node (gNB) Doppler pre-compensation.

[0129] In a possible example, before determining the validity of the QCL parameter corresponding to the first TCI state and / or the second TCI state according to the parameter value corresponding to the position of the first bit, the apparatus 3 is further configured to determine that a transmission scheme of a PDCCH corresponding to a coreset associated with the first TCI state and the second TCI state is a first transmission scheme, and the first transmission scheme is TRP Doppler pre-compensation or gNB Doppler pre-compensation.

[0130] In a possible example, the apparatus 3 is further configured to determine, according to a first logical channel identifier, that the coreset configured by the MCE CE is the coreset associated with the PDCCH with the first transmission scheme.

[0131] In a possible example, in the case that the indication information comprises the DCI, the determining unit 32 is specifically configured to: determine a first field contained in the DCI; and determine the validity of the QCL parameter corresponding to the first TCI state and / or the second TCI state according to a value corresponding to a position of a second bit included in the first field.

[0132] In a possible example, the first field comprises any one of the following fields: an Identifier for DCI formats field, a Hybrid Automatic Repeat Process Number (HARQ process number) field, a TPC command for scheduled PUCCH field, an Antenna port field, an SRS request field, and / or a DMRS sequence initialization field.

[0133] In a possible example, the position of the second bit is the position of a first bit contained in the first field, or is the position of a last bit contained in the first field, or is the position of any one of the bits contained in the first field.

[0134] In a possible example, a coreset pool index coresetPoolIndex of a coreset associated with the PDCCH corresponding to the DCI is 0 or 1.

[0135] In a possible example, in the case that the DCI is used to indicate the first TCI state and the second TCI state, the first TCI state and the second TCI state are both used to represent a downlink common beam or an uplink common beam.

[0136] In a possible example, the indication information comprises information corresponding to the TCI states, and the information corresponding to the TCI states comprises identities of the first TCI state and the second TCI state. In the determining, by the determining unit 32, of the validity of the QCL parameter corresponding to the first TCI state and / or the second TCI state according to the indication information, the determining unit 32 is specifically configured to: determine the validity of the QCL parameter corresponding to the first TCI state and / or the second TCI state according to a value corresponding to an identity of the identities of the first TCI state and the second TCI state.

[0137] In a possible example, in the determining, by the determining unit 32, of the validity of the QCL parameter corresponding to the first TCI state and / or the second TCI state according to a value corresponding to an identity of the identities of the first TCI state and the second TCI state, the determining unit 32 is specifically configured to: determine the validity of the QCL parameter corresponding to the TCI state with a minimum value corresponding to an identity of the identities of the first TCI state and the second TCI state.

[0138] In a possible example, in the determining, by the determining unit 32, of the validity of the QCL parameter corresponding to the first TCI state and / or the second TCI state according to a value corresponding to an identity of the identities of the first TCI state and the second TCI state, the determining unit 32 is specifically configured to: determine the validity of the QCL parameter corresponding to the TCI state with a maximum value corresponding to an identity of the identities of the first TCI state and the second TCI state.

[0139] In a possible example, in terms of determining the validity of the QCL parameter corresponding to the first TCI state and / or the second TCI state according to the indication information, the determining unit 32 is specifically configured to: when it is determined that the channel corresponding to the first TCI state and the second TCI state is the PDSCH, the validity of the QCL parameter corresponding to the first TCI state and / or the second TCI state is the same as that when the channel corresponding to the first TCI state and / or the second TCI state is the PDCCH; or when it is determined that the channel corresponding to the first TCI state and the second TCI state is the PDCCH, the validity of the QCL parameter corresponding to the first TCI state and / or the second TCI state is the same as that when the channel corresponding to the first TCI state and / or the second TCI state is the PDSCH.

[0140] Wherein, all the related content of each step involved in the above method embodiments can be cited to the function description of the corresponding functional unit, which will not be repeated here. Of course, the QCL parameter determination apparatus provided by the embodiments of the present application includes but is not limited to the above-mentioned units, for example: the QCL parameter determination apparatus can also include a storage unit. The storage unit can be used to store the program code and data of the QCL parameter determination apparatus.

[0141] In the case of using integrated modules, the structural diagram of the QCL parameter determination apparatus provided by the embodiments of the present application is as shown in Figure 4 In Figure 4 , the QCL parameter determination apparatus 4 includes a processing module 40 and a communication module 41. The processing module 40 is used to control and manage the actions of the QCL parameter determination apparatus, for example, the steps performed by the obtaining unit 31 and the determining unit 32, and / or other processes for implementing the technologies described herein. The communication module 41 is used for the interaction between the QCL parameter determination apparatus and other devices. As Figure 4 shown, the QCL parameter determination apparatus 4 can also include a storage module 42, which is used for the program code and data of the QCL parameter determination processing apparatus 3, for example, storing the contents saved by the above-mentioned storage unit.

[0142] The processing module 40 can be a processor or a controller, for example, a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), an ASIC, an FPGA, or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. It can implement or execute various exemplary logical blocks, modules, and circuits described in combination with the disclosure. The processor can also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like. The communication module 41 can be a transceiver, an RF circuit, a communication interface, or the like. The storage module 42 can be a memory.

[0143] All related content of each scenario involved in the above method embodiments can be cited to the functional description of the corresponding functional module, and will not be described here. The QCL parameter determination device 3 and the QCL parameter determination device 4 can perform the steps performed by the network device in the above QCL parameter determination method. Figure 2a The steps performed by the terminal in the QCL parameter determination method shown in the above.

[0144] The QCL parameter determination device provided in the embodiments of the present application can be a network device. Specifically, the QCL parameter determination device is used to perform the steps performed by the network device in the above QCL parameter determination method. The QCL parameter determination device provided in the embodiments of the present application can include units corresponding to the corresponding steps.

[0145] The embodiments of the present application can divide the functional units of the QCL parameter determination device according to the above method examples. For example, each functional unit can be divided according to each function, or two or more functions can be integrated in one processing unit. The integrated unit can be realized in the form of hardware or in the form of a software functional unit. The division of units in the embodiments of the present application is illustrative, and is only a logical function division. When actually implemented, another division mode can be used.

[0146] In the case of dividing each functional unit according to each function, Figure 5 Another possible structure of the QCL parameter determination device involved in the above embodiments is shown in FIG. 5. As shown in FIG. 5, the QCL parameter determination device 5 includes a sending unit 51 and a determining unit 52. The sending unit 51 is configured to send indication information, and the indication information includes information indicating a first transmission configuration indication state (TCI state) and / or a second TCI state. The determining unit 52 is configured to determine the validity of the QCL parameter corresponding to the first TCI state and / or the second TCI state according to the indication information. Figure 5 The sending unit 51 is configured to send indication information, and the indication information includes information indicating a first transmission configuration indication state (TCI state) and / or a second TCI state. The determining unit 52 is configured to determine the validity of the QCL parameter corresponding to the first TCI state and / or the second TCI state according to the indication information.

[0147] In a possible example, the QCL parameter comprises a Doppler shift parameter and / or a Doppler spread parameter.

[0148] In a possible example, the channel corresponding to the first TCI state and the second TCI state is a physical downlink control channel (PDCCH) or a physical downlink shared channel (PDSCH).

[0149] In a possible example, the indication information comprises a medium access control (MAC) control element (CE), downlink control information (DCI), or information corresponding to the TCI state.

[0150] In a possible example, when the indication information comprises the MAC CE, the determining unit 52 is specifically configured to: acquire an indication information position corresponding to the MAC CE, the indication information position being a position of a first bit contained in the MAC CE; and determine the validity of the QCL parameter corresponding to the first TCI state and / or the second TCI state according to a parameter value corresponding to the position of the first bit.

[0151] In a possible example, when the channel corresponding to the first TCI state and the second TCI state is the PDCCH, and the first TCI state and the second TCI state are associated with a same control resource set (coreset), the position of the first bit is a position of a first bit of a third byte contained in the MAC CE.

[0152] In a possible example, when the channel corresponding to the first TCI state and the second TCI state is the PDSCH, and the MAC CE contains an indicator C i When a value of the field is 1, the position of the first bit is a position of a first bit of a byte in which a TCI state ID i,2 of the first TCI state and the second TCI state, wherein the i is an index of a code point of a transmission configuration indication (TCI) field in the DCI. i,2 of the first TCI state and the second TCI state, wherein the i is an index of a code point of a transmission configuration indication (TCI) field in the DCI.

[0153] In a possible example, before determining the validity of the QCL parameters corresponding to the first TCI state and / or the second TCI state according to the parameter value corresponding to the position of the first bit, the apparatus 5 is further configured to determine that a transmission scheme of a PDSCH configured by radio resource control (RRC) signaling is transmission and reception point (TRP) Doppler pre-compensation or next generation node (gNB) Doppler pre-compensation.

[0154] In a possible example, before determining the validity of the QCL parameters corresponding to the first TCI state and / or the second TCI state according to the parameter value corresponding to the position of the first bit, the apparatus 5 is further configured to determine that a transmission scheme of a PDCCH corresponding to a coreset associated with the first TCI state and the second TCI state is a first transmission scheme, and the first transmission scheme is TRP Doppler pre-compensation or gNB Doppler pre-compensation.

[0155] In a possible example, the apparatus 5 is further configured to determine, according to a first logical channel identifier, that a coreset configured by the MCE CE is a coreset associated with the PDCCH with the first transmission scheme.

[0156] In a possible example, when the indication information includes the DCI, the determining, according to the indication information, of the validity of the QCL parameters corresponding to the first TCI state and / or the second TCI state includes: determining a first field included in the DCI; and determining the validity of the QCL parameters corresponding to the first TCI state and / or the second TCI state according to a value corresponding to a position of a second bit included in the first field.

[0157] In a possible example, the first field includes any one of the following fields: an identifier for DCI formats field, a hybrid automatic repeat request (HARQ) process number field, a TPC command for scheduled PUCCH field, an antenna port field, a sounding reference signal (SRS) request field and / or a DMRS sequence initialization field.

[0158] In a possible example, the position of the second bit is the position of the first bit included in the first field, or the position of the last bit included in the first field, or the position of any bit included in the first field.

[0159] In a possible example, the coresetPoolIndex of the coreset associated with the PDCCH corresponding to the DCI is 0 or 1.

[0160] In a possible example, in the case where the DCI is used to indicate the first TCI state and the second TCI state, the first TCI state and the second TCI state are both used to represent a downlink common beam or an uplink common beam.

[0161] In a possible example, the indication information includes information corresponding to the TCI state, and the information corresponding to the TCI state includes identities of the first TCI state and the second TCI state. In the determination of the validity of the QCL parameter corresponding to the first TCI state and / or the second TCI state according to the indication information, the determination unit 52 is specifically configured to: determine the validity of the QCL parameter corresponding to the first TCI state and / or the second TCI state according to a value corresponding to an identity of the first TCI state and the second TCI state.

[0162] In a possible example, in the determination of the validity of the QCL parameter corresponding to the first TCI state and / or the second TCI state according to a value corresponding to an identity of the first TCI state and the second TCI state, the determination unit 52 is specifically configured to: determine the validity of the QCL parameter corresponding to the TCI state with the minimum value corresponding to the identity of the first TCI state and the second TCI state.

[0163] In a possible example, in the determining the validity of the QCL parameter corresponding to the first TCI state and / or the second TCI state according to the indication information, the determining unit 32 is specifically configured to: determine that, when the channel corresponding to the first TCI state and the second TCI state is the PDSCH, the validity of the QCL parameter corresponding to the first TCI state and / or the second TCI state is the same as that when the channel corresponding to the first TCI state and / or the second TCI state is the PDCCH; or determine that, when the channel corresponding to the first TCI state and the second TCI state is the PDCCH, the validity of the QCL parameter corresponding to the first TCI state and / or the second TCI state is the same as that when the channel corresponding to the first TCI state and / or the second TCI state is the PDSCH.

[0164] In a possible example, in the determining the validity of the QCL parameter corresponding to the first TCI state and / or the second TCI state according to the indication information, the determining unit 32 is specifically configured to: determine that, when the channel corresponding to the first TCI state and the second TCI state is the PDSCH, the validity of the QCL parameter corresponding to the first TCI state and / or the second TCI state is the same as that when the channel corresponding to the first TCI state and / or the second TCI state is the PDCCH; or determine that, when the channel corresponding to the first TCI state and the second TCI state is the PDCCH, the validity of the QCL parameter corresponding to the first TCI state and / or the second TCI state is the same as that when the channel corresponding to the first TCI state and / or the second TCI state is the PDSCH.

[0165] Wherein, all the related content of each step involved in the above method embodiments can be cited to the function description of the corresponding functional unit, which will not be repeated here. Of course, the QCL parameter determination apparatus provided by the embodiments of the present application includes but is not limited to the above-mentioned units, for example: the QCL parameter determination apparatus can also include a storage unit. The storage unit can be used to store the program code and data of the QCL parameter determination apparatus.

[0166] In the case of using integrated modules, the structural diagram of the QCL parameter determination apparatus provided by the embodiments of the present application is as shown in Figure 6 Figure 6 ​In some embodiments, the QCL parameter determination apparatus 6 comprises a processing module 60 and a communication module 61. The processing module 60 is configured to control and manage the actions of the QCL parameter determination apparatus, for example, the steps performed by the sending unit 51 and the determining unit 52, and / or to perform other processes of the techniques described herein. The communication module 61 is configured to interact between the QCL parameter determination apparatus and other devices. As Figure 6 As shown in FIG. 6, the QCL parameter determination apparatus 6 can further comprise a storage module 62 configured to store program codes and data of the QCL parameter determination apparatus 5, for example, to store the contents stored in the storage unit.

[0167] The processing module 60 can be a processor or a controller, for example, a Central Processing Unit (CPU), a general-purpose processor, a Digital Signal Processor (DSP), an ASIC, an FPGA, or other programmable logic device, transistor logic device, hardware component, or any combination thereof. It can implement or execute the various exemplary logical blocks, modules, and circuits described in connection with the disclosure. The processor can also be a combination of computing functions, for example, a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like. The communication module 61 can be a transceiver, an RF circuit, a communication interface, or the like. The storage module 62 can be a memory.

[0168] All related contents of each scenario involved in the above method embodiments can be cited to the functional description of the corresponding functional module, which will not be repeated here. The QCL parameter determination apparatus 5 and the QCL parameter determination apparatus 6 can perform the steps described above. Figure 2a As shown in FIG. 6, the QCL parameter determination apparatus 6 can further comprise a storage module 62 configured to store program codes and data of the QCL parameter determination apparatus 5, for example, to store the contents stored in the storage unit.

[0169] The computer readable storage medium stores a computer program for electronic data exchange, wherein the computer program causes the computer to perform part or all of the steps described above as performed by the network side device in the method embodiments.

[0170] The chip is configured to obtain indication information, the indication information comprising information indicating a first Transmission Configuration Indication (TCI) state and / or a second TCI state; and determine validity of a QCL parameter corresponding to the first TCI state and / or the second TCI state according to the indication information.

[0171] An embodiment of the present application provides a chip module, comprising a transceiver assembly and a chip, the chip being configured to acquire indication information, the indication information comprising information indicating a first transmission configuration indication state (TCI state) and / or a second TCI state; and determine validity of QCL parameters corresponding to the first TCI state and / or the second TCI state according to the indication information.

[0172] An embodiment of the present application also provides a chip, the chip being configured to send indication information, the indication information comprising information indicating a first transmission configuration indication state (TCI state) and / or a second TCI state; and determine validity of QCL parameters corresponding to the first TCI state and / or the second TCI state according to the indication information.

[0173] An embodiment of the present application also provides a chip module, comprising a transceiver assembly and a chip, the chip being configured to send indication information, the indication information comprising information indicating a first transmission configuration indication state (TCI state) and / or a second TCI state; and determine validity of QCL parameters corresponding to the first TCI state and / or the second TCI state according to the indication information.

[0174] The steps of the methods or algorithms described in the embodiments of the present application can be implemented in the form of hardware or by a processor executing software instructions. The software instructions can be composed of corresponding software modules, and the software modules can be stored in a Random Access Memory (RAM), a flash memory, a Read Only Memory (ROM), an Erasable Programmable ROM (EPROM), an Electrically EPROM (EEPROM), a register, a hard disk, a mobile hard disk, a compact disk (CD-ROM) or any other form of storage medium well known in the art. An exemplary storage medium is coupled to a processor, so that the processor can read information from the storage medium and write information to the storage medium. Of course, the storage medium can also be an integral part of the processor. The processor and the storage medium can be located in an ASIC. In addition, the ASIC can be located in an access network device, a target network device or a core network device. Of course, the processor and the storage medium can also exist as discrete components in the access network device, the target network device or the core network device.

[0175] Those skilled in the art should understand that, in one or more examples described above, the functions described in the embodiments of the present application can be implemented entirely or partially by software, hardware, firmware or any combination thereof. When implemented by software, it can be implemented in the form of a computer program product entirely or partially. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are entirely or partially generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network or other programmable devices. The computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another, for example, the computer instructions can be transferred from one website, computer, server or data center to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (Digital Subscriber Line, DSL)) or wireless (such as infrared, wireless, microwave, etc.) mode. The computer readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. integrated with one or more available media. The available media can be magnetic media (such as floppy disk, hard disk, magnetic tape), optical media (such as digital video disc (Digital Video Disc, DVD)), or semiconductor media (such as solid state disk (Solid State Disk, SSD)) and the like.

[0176] The above detailed description of the embodiments of the present application further illustrates the purposes, technical solutions and beneficial effects of the embodiments of the present application. It should be understood that the above description is only a specific implementation of the embodiments of the present application and is not intended to limit the protection scope of the embodiments of the present application. Any modification, equivalent replacement, improvement, etc. made on the basis of the technical solutions of the embodiments of the present application should be included in the protection scope of the embodiments of the present application.

Claims

1. A method for determining quasi-co-located QCL parameters, characterized in that, Applied to a terminal, the method includes: Obtain indication information, the indication information including information indicating a first Transmission Configuration Indication (TCI) state and / or a second TCI state; The validity of the QCL parameters corresponding to the first TCI state and / or the second TCI state is determined based on the indication information, wherein the indication information includes MAC CE, including: obtaining a position of a first bit included in the MAC CE, in a case where the channels corresponding to the first TCI state and the second TCI state are PDCCH, and the first TCI state and the second TCI state are associated with a same control resource set (coreset), the position of the first bit is a position of a first bit of a third byte included in the MAC CE; in a case where the channels corresponding to the first TCI state and the second TCI state are PDSCH, and the MAC CE includes an indicator C i , the position of the first bit is a position of a first bit of a byte where a TCI state ID i,2 field is located, wherein the TCI state ID i,2 is a second TCI state indicated by an i-th codepoint in a transmission configuration indication field of DCI corresponding to the first TCI state and the second TCI state, wherein the i is an index of a codepoint of a transmission configuration indication (TCI) field in the DCI. The validity of the QCL parameter corresponding to the first TCI state and / or the second TCI state is determined based on the parameter value corresponding to the position of the first bit.

2. The method of claim 1, wherein, The QCL parameters include Doppler frequency shift parameters and / or Doppler spread parameters.

3. The method of claim 1, wherein, The channels corresponding to the first TCI state and the second TCI state are either the Physical Downlink Control Channel (PDCCH) or the Physical Downlink Shared Channel (PDSCH).

4. The method of claim 3, wherein, The indication information includes the Media Access Control Layer Control Element (MAC CE), Downlink Control Information (DCI), or information corresponding to the TCI state.

5. The method of claim 1, wherein, Before determining the validity of the QCL parameters corresponding to the first TCI state and / or the second TCI state based on the parameter value corresponding to the position of the first bit, the method further includes: The transmission scheme for the PDSCH in the Radio Resource Control (RRC) signaling configuration is determined to be either TRP Doppler pre-compensation or next-generation node (gNB) Doppler pre-compensation.

6. The method of claim 1, wherein, Before determining the validity of the QCL parameters corresponding to the first TCI state and / or the second TCI state based on the parameter value corresponding to the position of the first bit, the method further includes: The transmission scheme of the PDCCH corresponding to the coreset associated with the first TCI state and the second TCI state is determined as the first transmission scheme. The first transmission scheme is either the Doppler pre-compensation of the transmit and receive points (TRP) or the Doppler pre-compensation of the 5G network base station (gNB).

7. The method of claim 6, wherein, The method further includes: The coreset configured by the MAC CE according to the first logical channel identifier is the coreset associated with the PDCCH of the first transmission scheme.

8. The method of claim 4, wherein, The indication information includes the DCI, and determining the validity of the QCL parameters corresponding to the first TCI state and / or the second TCI state based on the indication information includes: Determine the first field contained in the DCI; The validity of the QCL parameters corresponding to the first TCI state and / or the second TCI state is determined based on the value corresponding to the position of the second bit included in the first field.

9. The method of claim 8, wherein, The first field includes any one of the following fields: The fields corresponding to the DCI format are: Identifier for DCI formats, HARQ process number, TPC command for scheduled PUCCH, Antenna port, SRS request, and / or DMRS sequence initialization.

10. The method of claim 9, wherein, The position of the second bit is the position of the first bit contained in the first field, or the position of the last bit contained in the first field, or the position of any bit contained in the first field.

11. The method of claim 8, wherein, The coresetPoolIndex index of the control resource set associated with the PDCCH corresponding to the DCI is 0 or 1.

12. The method of claim 8, wherein, In the case where the DCI is used to indicate the first TCI state and the second TCI state, both the first TCI state and the second TCI state are used to characterize the downlink common beam or the uplink common beam.

13. The method of claim 4, wherein, The indication information includes information corresponding to the TCI state, and the information corresponding to the TCI state includes the identity identifiers of the first TCI state and the second TCI state. Determining the validity of the QCL parameters corresponding to the first TCI state and / or the second TCI state based on the indication information includes: The validity of the QCL parameters corresponding to the first TCI state and / or the second TCI state is determined based on the values ​​corresponding to the identity identifiers in the identity identifiers of the first TCI state and the second TCI state.

14. The method of claim 13, wherein, The step of determining the validity of the QCL parameters corresponding to the first TCI state and / or the second TCI state based on the values ​​corresponding to the identity identifiers in the identity identifiers of the first TCI state and the second TCI state includes: Determine the validity of the QCL parameter corresponding to the TCI state with the smallest value among the identity identifiers of the first TCI state and the second TCI state.

15. The method of claim 14, wherein, The step of determining the validity of the QCL parameters corresponding to the first TCI state and / or the second TCI state based on the values ​​corresponding to the identity identifiers in the identity identifiers of the first TCI state and the second TCI state includes: Determine the validity of the QCL parameter corresponding to the TCI state with the largest value among the identity identifiers of the first TCI state and the second TCI state.

16. The method according to claim 3, characterized in that, Determining the validity of the QCL parameters corresponding to the first TCI state and / or the second TCI state based on the indication information includes: When the channel corresponding to the first TCI state and the second TCI state is determined to be the PDSCH, the validity of the QCL parameters corresponding to the first TCI state and / or the second TCI state is the same as the validity of the QCL parameters corresponding to the first TCI state and / or the second TCI state when the channel corresponding to the first TCI state and / or the second TCI state is the PDCCH. Alternatively, when the channel corresponding to the first TCI state and the second TCI state is determined to be the PDCCH, the validity of the QCL parameters corresponding to the first TCI state and / or the second TCI state is the same as the validity of the QCL parameters corresponding to the first TCI state and / or the second TCI state when the channel corresponding to the first TCI state and / or the second TCI state is the PDSCH.

17. A method for determining QCL parameters, characterized in that, Applied to network devices, the method includes: Send indication information, the indication information including information indicating a first Transmission Configuration Indication (TCI) state and / or a second TCI state; The validity of the QCL parameters corresponding to the first TCI state and / or the second TCI state is determined based on the indication information, wherein the indication information includes MAC CE, including: obtaining a position of a first bit included in the MAC CE, in a case where the channels corresponding to the first TCI state and the second TCI state are PDCCH, and the first TCI state and the second TCI state are associated with a same control resource set (coreset), the position of the first bit is a position of a first bit of a third byte included in the MAC CE; in a case where the channels corresponding to the first TCI state and the second TCI state are PDSCH, and the MAC CE includes an indicator C i a value of 1, the position of the first bit is a position of a first bit of a byte in which the TCI state ID i,2 field is located, wherein the TCI state ID i,2 is a second TCI state indicated by an i-th codepoint in a transmission configuration indication field of DCI transmission of the first TCI state and the second TCI state, wherein the i is an index of a codepoint of a transmission configuration indication TCI field in the DCI; The validity of the QCL parameter corresponding to the first TCI state and / or the second TCI state is determined based on the parameter value corresponding to the position of the first bit.

18. A device for determining QCL parameters, characterized in that, Applied to a terminal, the device is used to implement the method according to any one of claims 1-16, the device comprising: The acquisition unit is used to acquire indication information, the indication information including information indicating a first transmission configuration indication state TCIstate and / or a second TCI state; The determining unit is configured to determine the validity of the QCL parameters corresponding to the first TCI state and / or the second TCI state based on the indication information.

19. A device for determining QCL parameters, characterized in that, Applied to network devices, the apparatus is used to implement the method of claim 17, the apparatus comprising: A sending unit is used to send indication information, the indication information including information indicating a first transmission configuration indication state TCIstate and / or a second TCI state; The determining unit is configured to determine the validity of the QCL parameters corresponding to the first TCI state and / or the second TCI state based on the indication information.

20. A terminal, characterized in that, The method includes a processor, a memory, and one or more programs stored in the memory and configured to be executed by the processor, the programs including instructions for performing the steps of the method as described in any one of claims 1-16.

21. A network device, characterized in that, It includes a processor, a memory, and one or more programs, said one or more programs being stored in the memory and configured to be executed by the processor, said programs including instructions for performing the steps of the method as claimed in claim 17.

22. A computer-readable storage medium, characterized in that, A computer program for storing electronic data interchange, wherein the computer program causes a computer to perform the method as described in any one of claims 1-16 or claim 17.

23. A chip, applied in a terminal, said chip being used to implement the method according to any one of claims 1-16, characterized in that, The chip is used to acquire indication information, which includes information indicating a first transmission configuration indication state TCIstate and / or a second TCI state. The validity of the QCL parameters corresponding to the first TCI state and / or the second TCI state is determined based on the indication information.

24. A chip module, used in a terminal, characterized in that, The chip module is used to implement the method according to any one of claims 1-16, including a transceiver component and a chip. The chip is used to acquire indication information, which includes information indicating a first transmission configuration indication state TCIstate and / or a second TCI state. The validity of the QCL parameters corresponding to the first TCI state and / or the second TCI state is determined based on the indication information.

25. A chip, applied to a network device, the network device being used to implement the method of claim 17, characterized in that, The chip is used to send indication information, which includes information indicating a first transmission configuration indication state TCIstate and / or a second TCI state; The validity of the QCL parameters corresponding to the first TCI state and / or the second TCI state is determined based on the indication information.

26. A chip module, used in network equipment, characterized in that, The network device is used to implement the method of claim 17, including a transceiver component and a chip. The chip is used to send indication information, which includes information indicating a first transmission configuration indication state TCIstate and / or a second TCI state; The validity of the QCL parameters corresponding to the first TCI state and / or the second TCI state is determined based on the indication information.

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