Diversity transmission method, terminal and network side equipment

Abstract

The invention discloses a diversity transmission method, a terminal and network side equipment, and belongs to the technical field of communication, and the diversity transmission method comprises the steps that the terminal obtains configuration parameters of transmission diversity; and the terminal receives a signal sent by network side equipment according to the configuration parameter of the transmission diversity based on first indication information or a predefined rule.

Description

Technical Field

[0001] This application belongs to the field of communication technologies, and particularly relates to a diversity transmission method, a terminal, and a network-side device. Background Art

[0002] In a cell-free network architecture or a scenario of multiple transmit / receive points (TRPs) cells, each TRP or TRP cluster will cover the corresponding area according to the network plan; and multiple TRPs will be deployed to provide coverage in hot spot coverage areas and cooperative transmission areas. Therefore, in a cell-free network architecture, there are areas where the coverage of synchronization signal beams overlaps between multiple TRPs or TRP clusters.

[0003] In a cell-free network architecture, multiple TRP nodes can be planned as a cell, and each TRP can send one or more synchronization signal beams. This greatly increases the set of synchronization signal beams in a cell-free network architecture, and it is very easy to exceed the maximum number of synchronization signal beams that the existing 5G system can support. In a 5G system, system information is broadcast using synchronization signal beams. In a cell-free network architecture, if the 5G system broadcast scheme is still used and the system information is broadcast separately according to each synchronization signal beam, it will lead to an increase in time-frequency resource overhead. Summary of the Invention

[0004] Embodiments of this application provide a diversity transmission method, a terminal, and a network-side device, which can improve the transmission efficiency of information sent by the network-side device and avoid excessive resource occupation.

[0005] In a first aspect, a diversity transmission method is provided, including:

[0006] A terminal obtains configuration parameters for transmission diversity;

[0007] The terminal receives a signal sent by a network-side device according to the configuration parameters for transmission diversity based on first indication information or a predefined rule.

[0008] In a second aspect, a diversity transmission method is provided, including:

[0009] A network-side device sends configuration parameters for transmission diversity to a terminal; the configuration parameters for transmission diversity are used for the terminal to receive a signal sent by the network-side device based on first indication information or a predefined rule.

[0010] In a third aspect, a diversity transmission device is provided, including:

[0011] An obtaining module, configured to obtain configuration parameters for transmission diversity;

[0012] A transmitting module, configured to receive a signal sent by a network-side device based on first indication information or a predefined rule according to configuration parameters of the transmit diversity.

[0013] In a fourth aspect, a diversity transmission apparatus is provided, including:

[0014] A transmitting module, configured to send configuration parameters of transmit diversity to a terminal; the configuration parameters of the transmit diversity are used for the terminal to receive a signal sent by the network-side device based on first indication information or a predefined rule.

[0015] In a fifth aspect, a terminal is provided. The terminal includes a processor and a memory. The memory stores a program or instruction that can run on the processor. When the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

[0016] In a sixth aspect, a terminal is provided, including a processor and a communication interface. The processor is configured to obtain configuration parameters of transmit diversity; the communication interface is configured to receive a signal sent by a network-side device based on first indication information or a predefined rule according to the configuration parameters of the transmit diversity.

[0017] In a seventh aspect, a network-side device is provided. The network-side device includes a processor and a memory. The memory stores a program or instruction that can run on the processor. When the program or instruction is executed by the processor, the steps of the method described in the second aspect are implemented.

[0018] In an eighth aspect, a network-side device is provided, including a processor and a communication interface. The communication interface is configured to send configuration parameters of transmit diversity to a terminal; the configuration parameters of the transmit diversity are used for the terminal to receive a signal sent by the network-side device based on first indication information or a predefined rule.

[0019] In a ninth aspect, a readable storage medium is provided. A program or instruction is stored on the readable storage medium. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the second aspect are implemented.

[0020] In a tenth aspect, a wireless communication system is provided, including: a terminal and a network-side device. The terminal can be used to execute the steps of the method described in the first aspect, and the network-side device can be used to execute the steps of the method described in the second aspect.

[0021] In an eleventh aspect, a chip is provided. The chip includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is configured to run a program or instruction to implement the method described in the first aspect, or implement the method described in the second aspect.

[0022] In a twelfth aspect, a computer program / program product is provided. The computer program / program product is stored in a storage medium and is executed by at least one processor to implement the steps of the diversity transmission method as described in the first aspect or the second aspect.

[0023] In an embodiment of the present application, a terminal obtains configuration parameters of transmission diversity; the terminal receives a signal sent by a network-side device according to the configuration parameters of transmission diversity based on first indication information or a predefined rule. The network-side device can send a signal to the terminal based on transmission diversity, improving the transmission efficiency of the information sent by the network-side device and avoiding the problem of excessive resource occupation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of the architecture of a wireless communication system provided by an embodiment of the present application;

[0025] Figure 2 is one of the schematic flowcharts of the diversity transmission method provided by an embodiment of the present application;

[0026] Figure 3 is a multiplexing schematic diagram of simultaneous transmission of synchronization signals by multiple TRPs in the diversity transmission method provided by an embodiment of the present application;

[0027] Figure 4 is a schematic diagram of TRP beam diversity transmission in the case of a TRP cluster in the diversity transmission method provided by an embodiment of the present application;

[0028] Figure 5 is a schematic diagram of transmission diversity based on MIB indication in the diversity transmission method provided by an embodiment of the present application;

[0029] Figure 6 is one of the schematic diagrams of in-cluster transmission diversity in the diversity transmission method provided by an embodiment of the present application;

[0030] Figure 7 is a schematic diagram of transmission diversity between a macro station and a small station in the diversity transmission method provided by an embodiment of the present application;

[0031] Figure 8 is a schematic diagram of transmission diversity of multiple synchronization signals of multiple small stations in the diversity transmission method provided by an embodiment of the present application;

[0032] Figure 9 is a schematic diagram of the transmission diversity principle of multiple terminals and multiple synchronization signals provided by an embodiment of the present application;

[0033] Figure 10 is the second schematic diagram of in-cluster transmission diversity in the diversity transmission method provided by an embodiment of the present application;

[0034] Figure 11 It is the second flowchart diagram of the diversity transmission method provided by an embodiment of the present application;

[0035] Figure 12 It is the first structural schematic diagram of the diversity transmission device provided by an embodiment of the present application;

[0036] Figure 13 It is the second structural schematic diagram of the diversity transmission device provided by an embodiment of the present application;

[0037] Figure 14 It is the structural schematic diagram of the communication device provided by an embodiment of the present application;

[0038] Figure 15 It is the structural schematic diagram of the terminal provided by an embodiment of the present application;

[0039] Figure 16 It is the structural schematic diagram of the network - side device provided by an embodiment of the present application. Detailed implementation manners

[0040] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0041] The terms "first", "second", etc. in the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such terms can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same category, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "or" in the present application means at least one of the connected objects. For example, "A or B" covers three scenarios, namely, Scenario 1: including A and not including B; Scenario 2: including B and not including A; Scenario 3: including both A and B. The character " / " generally represents an "or" relationship between the associated objects before and after.

[0042] The term "indicate" in the present application can be either a direct indication (or an explicit indication) or an indirect indication (or an implicit indication). Among them, a direct indication can be understood as that the sender clearly tells the receiver specific information, operations to be performed, or request results, etc. in the sent indication; an indirect indication can be understood as that the receiver determines the corresponding information according to the indication sent by the sender, or makes a judgment and determines the operations to be performed or request results, etc. according to the judgment result.

[0043] It should be noted that the technology described in the embodiments of this application is not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, and can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), or other systems. The terms "system" and "network" in the embodiments of this application are often used interchangeably, and the described technology can be used in the above-mentioned systems and radio technologies, as well as in other systems and radio technologies. The following description describes the New Radio (NR) system for example purposes, and the NR term is used in most of the following descriptions, but these technologies can also be applied to systems other than the NR system, such as the 6th Generation (6 th Generation, 6G) communication system.

[0044] Figure 1A block diagram of a wireless communication system to which embodiments of the present application can be applied is shown. The wireless communication system includes a terminal 11 and a network-side device 12. Among them, the terminal 11 can be a mobile phone, a tablet personal computer, a laptop computer, a notebook computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile internet device (MID), an augmented reality (AR), a virtual reality (VR) device, a robot, a wearable device, a flight vehicle, a vehicle user equipment (VUE), a shipborne device, a pedestrian user equipment (PUE), a smart home (home devices with wireless communication functions, such as refrigerators, TVs, washing machines, or furniture, etc.), a game console, a personal computer (PC), a teller machine, or a self-service machine, etc. Wearable devices include: smart watches, smart bracelets, smart earphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart ankle chains, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle user equipment can also be referred to as a vehicle terminal, a vehicle controller, a vehicle module, a vehicle component, a vehicle chip, or a vehicle unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present application. The network-side device 12 can include an access network device or a core network device. Among them, the access network device can also be referred to as a radio access network (RAN) device, a radio access network function, or a radio access network unit. The access network device can include a base station, a wireless local area network (WLAN) access point (AP), or a wireless fidelity (WiFi) node, etc.Among them, the base station can be referred to as Node B (NB), Evolved Node B (eNB), the next generation Node B (gNB), New Radio Node B (NR Node B), access point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), home Node B (HNB), home evolved Node B, Transmission Reception Point (TRP), or some other suitable term in the art. As long as the same technical effect is achieved, the base station is not limited to specific technical terms. It should be noted that in the embodiments of this application, only the base station in the NR system is taken as an example for introduction, and the specific type of the base station is not limited.

[0045] The core network device may include but is not limited to at least one of the following: core network node, core network function, Mobility Management Entity (MME), Access and Mobility Management Function (AMF), Session Management Function (SMF), User Plane Function (UPF), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Server Discovery Function (EASDF), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), Local NEF (L-NEF), Binding Support Function (BSF), Application Function (AF), etc. It should be noted that in the embodiments of this application, only the core network devices in the NR system are taken as examples for introduction, and the specific types of core network devices are not limited.

[0046] First, the technical terms and application scenarios involved in the embodiments of this application are introduced:

[0047] The cell-free massive multiple-input / multiple-output (MIMO) system can be regarded as a deconstruction of the traditional massive MIMO system. In the traditional massive MIMO system, antennas are concentrated and distributed at a single site (base station), and terminals are distributed around the base station in the form of cells. In a massive MIMO system, a relatively large number of antennas are deployed at each base station. Therefore, a high array gain and spatial resolution are provided. Multiple terminals can be served simultaneously on the same time-frequency resources, providing high throughput, high reliability, and high energy efficiency. The cell-free massive MIMO system breaks the concept of cells. A large number of antennas are scattered and distributed over a wide area, and terminals are also scattered and distributed over this wide area. These antennas are called transmit-receive points (TRPs) or access points (APs). In theory, each terminal can communicate with each AP. With the help of the fronthaul network and the central processing unit (CPU), a large number of geographically dispersed TRPs can jointly serve a relatively small number of terminals, and the CPU uses channel statistical information for joint detection. The cell-free massive MIMO network is expected to be applied to next-generation indoor and hotspot coverage scenarios, such as smart factories, railway stations, shopping malls, stadiums, subways, hospitals, community centers, or university campuses, etc.

[0048] In actual deployment, the cell-free network in a hotspot area can be regarded as a supercell containing multiple TRPs, where multiple TRPs use the same cell ID. According to the synchronization accuracy and connection relationship between these TRPs, multiple TRPs with high synchronization accuracy can achieve cooperative transmission.

[0049] The broadcast-related channels of the cell-free network (such as the synchronization channel, random access channel, broadcast physical downlink control channel (PDCCH), and physical downlink shared channel (PDSCH), etc.) can be implemented according to a single frequency network (SFN) or distributed networking. When the number of TRPs in the cell-free network increases and the coverage range expands, the number of synchronization signal block (SS / PBCH Block, SSB) beams required will continue to increase, and the corresponding resources occupied by the broadcast PDCCH and PDSCH will also continue to increase.

[0050] The Space Frequency Block Code (SFBC) diversity transmission technology is introduced in the LTE system and can be used for PDSCH data transmission. However, the SFBC diversity transmission scheme in LTE restricts the ports of the Cell Reference Signal (CRS) of the base station to be 2 or 4 and is bound to other broadcast signals (such as CRS). In the 5G NR system, a beam-based synchronization signal transmission mechanism is introduced. According to network planning, different SSB beams correspond to different coverage areas. In a centralized deployment network, theoretically, the terminal will only receive a SSB beam signal with better signal quality, that is, the SSB beam in the area where the terminal is located. Therefore, the beamforming gain is used to replace the LTE transmission diversity gain for the signal transmission related to broadcasting in the 5G NR network.

[0051] A Cell free network may contain a large number of TRP nodes, and each node may participate in the transmission of synchronization signals to ensure that terminals within the coverage area can access the cell. The beam-based synchronization signal transmission and system information transmission can ensure that the terminal discovers the cell, but the beam-based system information transmission will increase the time-frequency resources occupied by the system information, especially in the case where the synchronization signal beams in the cellfree network are increasing continuously.

[0052] In addition, in a Cell free network, in order to achieve cooperative transmission between TRP nodes, the coverage areas of each TRP node need to have a certain overlap. This also means that terminals in the coverage overlap area can receive synchronization signals sent by multiple TRP nodes. Connected terminals can use multi-TRP to achieve coherent or multi-stream transmission based on channel measurement feedback. However, in the non-connected state, due to the lack of prior channel measurement information, the NR system only introduces a single-beam / single-port transmission mode, that is, the terminal is only associated with a TRP or TRP cluster corresponding to a synchronization signal beam, and other synchronization channel beams are regarded as interference signals, which increases the implementation complexity of the terminal and affects the communication quality and mobility of the terminal.

[0053] Therefore, in order to solve the problem of excessive resource occupation of system information in the Cell free network and improve the transmission efficiency of system information, the method of the embodiment of the present invention proposes to schedule multiple TRP nodes to transmit system information in a diversity manner; replacing the method of multiple TRP nodes transmitting system information separately.

[0054] The diversity transmission method provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings through some embodiments and their application scenarios.

[0055] Please refer to Figure 2The embodiment of the present application provides a diversity transmission method. The execution subject of the embodiment is a terminal. The method includes:

[0056] Step 101: The terminal obtains configuration parameters of transmission diversity;

[0057] Specifically, the configuration parameters of the transmission diversity may be acquired by determining through a predefined rule or by determining through information indicated by a network-side device.

[0058] Step 102: The terminal receives a signal sent by a network-side device based on the first indication information or predefined rules and according to the configuration parameters of the transmission diversity.

[0059] Specifically, after determining the configuration parameters of transmission diversity, transmission diversity is statically executed, such as executing transmission diversity based on predefined rules after determining the configuration parameters or after a predefined process is completed, that is, the terminal receives the downlink signal sent by the network side device according to the transmission mode of diversity transmission, or transmission diversity is semi-statically executed, for example, based on the indication of the first indication information, after the first indication information takes effect, the terminal receives the downlink signal according to the transmission mode of transmission diversity, the first indication information is indicated by high-level signaling such as MAC CE signaling, or transmission diversity is dynamically executed, for example, the first indication information can be dynamically indicated through DCI signaling, such as DCI signaling indicates that the currently scheduled PDSCH uses transmission diversity, and the terminal receives the downlink signal sent by the network side device according to the transmission mode of diversity transmission.

[0060] The method of this embodiment can reduce the time-frequency resource overhead of sending system information in turn according to the synchronization signal beam in a distributed / cell free networking situation, and can improve the system information reception quality in the overlapping area of ​​the synchronization signal beam.

[0061] Optionally, the above solution can be applied to the transmission of system information, or other non-connected downlink broadcast or multicast information (such as paging messages), etc., which is not limited in the embodiments of the present application.

[0062] Optionally, the configuration parameter of the transmission diversity includes at least one of the following:

[0063] Beam combining for transmit diversity;

[0064] Transmission mode;

[0065] The number of ports corresponding to the beam combination;

[0066] The port identifier corresponding to the beam combination;

[0067] generation parameters of a reference signal sequence corresponding to the beam combination, and time-frequency resource mapping information of the reference signal sequence;

[0068] The precoding information corresponding to the beam combination and the resource mapping information corresponding to the precoding information.

[0069] Among them, the beam combinations for transmit diversity are, for example, multiple candidate beam combinations, and the specific beams included in each beam combination.

[0070] Optionally, the port identifier can be represented by a port number, for example.

[0071] Optionally, the reference signal sequence can be a Demodulation Reference Signal (DMRS) sequence, for example.

[0072] Optionally, the transmission mode includes at least one of the following: single-beam or single-port transmission, multi-beam or multi-port diversity transmission.

[0073] Among them, the multi-beam diversity transmission may have different transmission methods according to different precoding matrices, such as SFBC, Space-Time Block Code (STBC), repeated transmission, etc. It can be understood that different transmit diversity methods correspond to different precoding matrices.

[0074] Optionally, the beams in the beam combination are synchronization signal beams or reference signal beams.

[0075] Optionally, the configuration parameters of the transmit diversity are determined by at least one of the following:

[0076] Predefined rules, second indication information;

[0077] The second indication information is indicated by at least one of the following: Master Information Block (MIB) message, System Information Block (SIB) message, Radio Resource Control (RRC), Medium Access Control Control Element (MAC CE) message, and Downlink Control Information (DCI) message.

[0078] Specifically, the predefined rules include, for example: the layout method of the synchronization signal, for example: Synchronization Signal Beam Layout 1 (SS beam pattern 1) corresponds to single-beam transmission / single-port transmission; Synchronization Signal Beam Layout 2 (SS beam pattern 2) corresponds to diversity transmission.

[0079] Alternatively, the configuration parameters of transmit diversity are indicated by the MIB message. For example, the MIB message indicates whether the synchronization signal beam associated with the MIB uses transmit diversity. Optionally, the MIB message may indicate that before configuring other transmission modes in the connected state, the downlink signal is transmitted using the transmit diversity mode.

[0080] Alternatively, the configuration parameters of transmit diversity are indicated by the SIB message. For example, the SIB message indicates the beam combination information of the synchronization signal beams participating in transmit diversity, or the PDCCH and / or scheduled PDSCH associated with the beam combination of the synchronization signal beams use transmit diversity.

[0081] Alternatively, the configuration parameters of transmit diversity are indicated by higher layer signaling (such as RRC message and / or MAC CE message). For example, it indicates the beam combination information of the synchronization signal or CSI-RS beam, and the PDCCH or PDSCH is received according to the transmit diversity of the beam combination.

[0082] Alternatively, when dynamically scheduling the PDSCH of transmit diversity, the relevant configuration parameters are carried in the DCI message.

[0083] It can be understood that the above several ways of obtaining configuration parameters can be combined with each other to determine a complete set of configuration parameters of transmit diversity. For example, the SIB message configures several candidate beam combinations of transmit diversity. When dynamically scheduling the PDSCH transmit diversity, the DCI information indicates that one of the candidate beam combinations is used for the PDSCH transmit diversity.

[0084] In the above embodiments, the configuration parameters of transmit diversity can be obtained in multiple ways, with greater flexibility and lower implementation complexity.

[0085] Optionally, the beam combination is a synchronization signal beam combination in a preset synchronization signal beam set, or a reference signal beam combination quasi-co-located with the synchronization signal beam in the synchronization signal beam set.

[0086] Optionally, the number of ports corresponding to the beam combination is equal to the number of beams in the beam combination of the transmit diversity;

[0087] The port identifier corresponding to the beam combination is determined based on the beam order of the beam combination of the transmit diversity or the inclusion relationship.

[0088] Among them, the beam order can be the order arranged in sequence according to the beam numbers. For example, beam 1 corresponds to port number 1001, and beam 2 corresponds to 1002. For example, the port number corresponding to the transmit diversity is determined according to the number size of the reference signal corresponding to the beam of the transmit diversity.

[0089] The inclusion relationship refers to, for example, the inclusion relationship between the upper-level synchronization signal beam and the lower-level synchronization signal beam in a Cell free network. For example, the first-level synchronization signal beam 1, the second-level synchronization signal beams 1-1 and 1-2 perform transmit diversity. The first-level synchronization signal beam 1 is the beam of the macro station node, and the second-level synchronization signal beams 1-1 and 1-2 are the beams of the small station nodes covered by the macro station node.

[0090] Optionally, the resource mapping information corresponding to the precoding information is obtained by mapping the time-frequency resources corresponding to the precoding information in sequence based on the port order corresponding to the beam combination, or the beam order in the beam combination, or the inclusion relationship.

[0091] Specifically, different numbers of beams for transmit diversity correspond to different precoding matrices. For example, a beam combination with 2 beams corresponds to one coding matrix, and a beam combination with 4 beams corresponds to one coding matrix.

[0092] Each beam in the beam combination corresponds to different rows and columns of the precoding matrix. For example, it corresponds to different rows and columns of the precoding matrix based on the port order, the beam order, and the inclusion relationship.

[0093] Optionally, the first indication information includes at least one of the following:

[0094] The triggering information for transmit diversity;

[0095] The switching indication information for the transmission mode.

[0096] Specifically, the first indication information can be used to indicate the triggering of transmit diversity, or to enable / disable transmit diversity, or can be used to indicate the switching of the transmission mode.

[0097] Optionally, according to a predefined rule, transmission mode 1 (for example, single-beam transmission / single-port transmission) is the default transmission mode for broadcast information. The network-side device explicitly indicates the switching of the transmission mode of a certain downlink physical channel (for example, switching to transmission mode 2 (diversity transmission)) through DCI, or MAC CE, or RRC message.

[0098] Optionally, the first indication information is indicated by at least one of the following:

[0099] The master information block MIB message, the system information block SIB message, the radio resource control RRC message, the media access control unit MAC CE message, and the downlink control information DCI message. It can be understood that the first indication information and the second indication information can be carried by the same message, or by different messages, without strict limitation.

[0100] Optionally, when the configuration parameter of the transmission diversity is determined by a predefined rule, the terminal obtains the configuration parameter of the transmission diversity, including:

[0101] The terminal determines the configuration parameter of the transmission diversity based on the layout mode of the synchronization signal.

[0102] Optionally, when the configuration parameter of the transmission diversity includes the transmission mode, the terminal determines the configuration parameter of the transmission diversity based on the layout mode of the synchronization signal, including:

[0103] The terminal determines the candidate resources of the synchronization signal based on the layout mode of the synchronization signal;

[0104] The terminal searches for the synchronization signal based on the candidate resources to obtain a search result;

[0105] The terminal determines the transmission mode based on the search result;

[0106] The candidate resources include at least one of the following: time-frequency position or reference signal sequence; different candidate resources represent different transmission modes.

[0107] Specifically, the candidate resources supporting transmission diversity are determined by the layout mode of the synchronization signal. For example, the protocol defines two types of sync rasters corresponding to different candidate frequency points of the synchronization signal. One type of sync raster is for the candidate frequency points of the synchronization signal for single-beam transmission of PDSCH, and the other type of sync raster is for the candidate frequency points of the synchronization signal for transmission diversity of PDSCH. The terminal searches for the synchronization signal at the candidate frequency points of the two types of sync rasters, and judges the transmission mode of the synchronization signal beam through the search result of the synchronization signal.

[0108] For example, it is determined whether to use transmission diversity through the time-frequency position or the reference signal sequence (such as the preamble sequence set).

[0109] Optionally, diversity transmission can be based on different resources. For example, two TRPs in a Cell free network send synchronization signals within the same time period, but use different frequency resources or reference signal random sequences, such as Figure 3 As shown, for example, SSB#0-0 and SSB#1-0 using different frequency resources can be used as beam combinations for diversity transmission.

[0110] Optionally, the predefined rule may be that the synchronization signals detected within the same time period are used as beam pairing for transmission diversity. For example, two or more synchronization signals of consecutive Orthogonal Frequency Division Multiplexing (OFDM) symbols within a time slot are paired for transmission diversity. Further, the transmission diversity port numbers corresponding to the synchronization signal beams are determined according to the frequency domain order, time domain order, or code domain order in which the synchronization signals appear. As Figure 3 shown, if TRP0 and TRP1 send synchronization signals using different frequency resources or code domain resources respectively within the same time period, the synchronization signal beams corresponding to TRP0 and TRP1 on the same time resource form a beam combination for subsequent PDCCH / PDSCH transmission diversity. As Figure 4 shown, in the case of a TRP cluster, transmission diversity is performed on the TRP beams, where PSS is the primary synchronization signal and SSS is the secondary synchronization signal.

[0111] Optionally, the transmission diversity of PDCCH and / or PDSCH is indicated through the MIB message. It is notified in the MIB message whether the current synchronization signal supports transmission diversity. For example, 1-bit information in the MIB message indicates whether the synchronization signal beam associated with the MIB uses transmission diversity for transmitting PDCCH and / or PDSCH. Further, the determination rule for the predefined synchronization signal beam combination is defined. For example, if there are 4 synchronization signal beams within a time slot, the terminal reads the MIB message within the corresponding synchronization signal to determine whether the 4 synchronization signals within this time period (e.g., a time slot) should form a combination for transmission diversity. For example, as Figure 5 shown, within a time period, the 4 SSBs are SSB#0, SSB#1, SSB#2, and SSB#3 respectively. By reading the MIB messages corresponding to the four SSBs, the SSBs enabled for transmission diversity form a beam combination for transmission diversity. For example, if the MIB messages corresponding to SSB#0 and SSB#1 are configured with transmission diversity enabled (i.e., triggering transmission diversity), then the terminals that select SSB#0 or SSB#1 to access the cell use the transmission diversity of SSB#0 and SSB#1 to receive the downlink signals PDCCH and / or PDSCH in the subsequent process. Another example is that in a Cell free network where the TRP cluster sends synchronization signals, the network supports transmission diversity within the TRP cluster. The terminal receives the synchronization signals sent by the TRP cluster and reads the corresponding MIB message, and the MIB indicates that the synchronization signal enables transmission diversity; as Figure 6 shown, the MIB indicates the frequency or time offset, and the terminal receives the synchronization signals of each TRP within the TRP cluster and / or receives the configuration parameters of the transmission diversity.

[0112] Optionally, the SIB message indicates PDSCH and / or PDCCH transmit diversity. For example, the SIB message carries the pairing relationship between synchronization signals. When the terminal receives a downlink signal later, it determines the synchronization signal beam participating in transmit diversity according to the pairing relationship. For example, for a newly accessed terminal, in the random access procedure, if one of the synchronized signal pairs is selected for random access, the terminal receives subsequent downlink signals in the transmit diversity mode.

[0113] Optionally, the higher layer signaling indicates PDCCH and / or PDSCH transmit diversity. For example, the network configures, through the higher layer signaling, the PDCCH resources for the terminal to monitor paging messages to be associated with two or more synchronization signal beams, and receives the PDCCH and PDSCH corresponding to the paging messages in the transmit diversity manner. It can be understood that the coverage areas of the two or more synchronization signal beams are the possible moving areas of the terminal, and the terminal determines the receiving beam for monitoring paging messages according to the signal strength of the synchronization signal measured most recently. For example, the synchronization signal beam with the highest signal strength among the two or more synchronization signal beams selected for the above transmit diversity is selected as the receiving beam.

[0114] Optionally, the method further includes:

[0115] The terminal monitors the physical downlink control channel PDCCH to obtain the downlink control information DCI message;

[0116] The terminal determines whether the physical downlink shared channel PDSCH adopts the transmit mode of diversity transmission based on the first indication information included in the DCI message.

[0117] Optionally, the beam corresponding to the PDCCH is one of the beam combinations of transmit diversity.

[0118] Optionally, the terminal determines whether the physical downlink shared channel PDSCH adopts the transmit mode of diversity transmission based on the first indication information included in the DCI message, including:

[0119] In the case where the transmit mode corresponding to the PDCCH is diversity transmission, it is determined that the PDSCH adopts the transmit mode of diversity transmission;

[0120] The configuration parameters of the transmit diversity of the PDSCH are the same as those of the transmit diversity of the PDCCH.

[0121] Specifically, PDSCH transmission diversity can be dynamically scheduled by DCI. For example, a 1-bit field is introduced in DCI to indicate the transmission mode of PDSCH. For example, when the value of the 1-bit field is 0, it represents single-beam transmission; when the value is 1, it represents transmission diversity. If transmission diversity is used, the corresponding beam combination is selected from the candidate beam combinations. For example, the synchronization signal beam for default DCI monitoring is one of the beams in the beam combination, so as to determine the beam combination including the DCI monitoring beam.

[0122] For static or semi-static transmission diversity, the terminal starts to receive PDCCH and / or PDSCH using transmission diversity after determining the beam combination for transmission diversity. For dynamically scheduled transmission diversity, the terminal determines the transmission mode of PDSCH according to the dynamic indication of DCI.

[0123] Optionally, PDSCH defaults to using the same transmission mode as PDCCH, and if transmission diversity is used, the parameters related to PDSCH transmission diversity are kept consistent with the PDCCH transmission diversity configuration parameters (for example, beam combination, precoding matrix and corresponding resource mapping information, generation parameters of reference signal sequence and corresponding time-frequency resource mapping information).

[0124] PDCCH is Quasi Co-Located (QCL) with the target reference signal (the target reference signal can be a synchronization signal or a Channel State Information Reference Signal (CSI-RS)).

[0125] Optionally, the target reference signal can be explicitly configured by the network-side device for the terminal (for the beam used to monitor PDCCH); or, it can be a synchronization signal selected according to the synchronization process or synchronization signal measurement results (for example, the synchronization signal with the best signal quality). It can be understood that there is an association relationship between the target reference signal and the PDCCH time-frequency resource (for example, the time-frequency relative position between the synchronization signal defined in the NR system and Control Resource Set (CORESET) #0). After the terminal determines the target reference signal, it can determine the PDCCH time-frequency resource.

[0126] Exemplarily, in the case of indicating the configuration parameters of transmission diversity by DCI, the terminal determines the number of beams for transmission diversity, such as two beams, four beams, etc. The beams for transmission diversity can be transmission diversity between multiple reference signal (or synchronization signal) beams (for example, reference signal beams sent by multiple TRPs); or they can be the beams of each TRP within the TRP cluster corresponding to the reference signal beam.

[0127] It can be understood that the PDCCH monitoring beam is one of the transmit diversity beams, and the DCI is carried by the PDCCH.

[0128] Optionally, the DCI explicitly indicates the beams participating in transmit diversity (e.g., the ID of the synchronization signal). For example, for transmit diversity with two beams, the DCI message indicates synchronization signal 0, indicating that the synchronization signal beam associated with the DCI performs transmit diversity with the beam of synchronization signal 0. Optionally, the beam / reference signal number may not include the PDCCH monitoring beam. For example, the synchronization signal beam associated with the DCI is synchronization signal 3, and the DCI indicates that synchronization signal 0 and synchronization signal 1 perform transmit diversity.

[0129] Optionally, the terminal determines the precoding matrix for transmit diversity. Different numbers of beams for transmit diversity correspond to different precoding matrices.

[0130] If the PDCCH monitoring beam is one of the transmit diversity beams, determine the position of the PDCCH monitoring beam in the precoding matrix for transmit diversity. It can be understood that different port numbers are associated with the rows and columns of the precoding matrix according to the number size.

[0131] For example, the synchronization signal beam associated with the DCI is synchronization signal 3, and the DCI indicates that synchronization signal 0 and the DCI-associated beam perform transmit diversity. The DCI can explicitly indicate that the synchronization signal beam associated with the DCI corresponds to port 1002; correspondingly, synchronization signal 0 corresponds to port 1001. Or, the terminal determines the corresponding port numbers according to the number sizes of the two synchronization signals. For example, they correspond to port 1001, 1002, etc. in ascending order of the number size.

[0132] Optionally, the terminal determines the generation parameters and time-frequency resource mapping positions of the DMRS sequences for each beam of the diversity transmission. For example, the pseudo-random number seed of the DMRS sequence is generated according to the port number. The DMRS resource mapping for different ports / different beams is mapped by frequency division or time division or code division according to the port number.

[0133] Optionally, the terminal receives the transmit diversity of the system information assuming channel quasi-co-location of the PDCCH monitoring.

[0134] Example 1, as Figure 7 shown, in a cell free network composed of a macro station and a small station, the macro station sends multiple synchronization signal (first-level synchronization signal) beams to ensure the coverage of the cell, and the small station sends multiple synchronization signals (second-level synchronization signals) to provide good signal quality for the terminals under the coverage of the small station. When scheduling the transmission of system information, the macro station synchronization signal beam and the small station synchronization signal beam can be used for transmit diversity.

[0135] For example, after the terminal completes the synchronization process and obtains the cell ID through the second-level synchronization signal, the terminal receives system information through the PDCCH associated with the second-level synchronization signal. The PDCCH indicates whether the terminal uses transmit diversity to receive the PDSCH. The beam of the macro station node's first-level synchronization signal and the beam of the small station node's second-level synchronization signal perform transmit diversity. According to the default rule, the beam of the macro station's first-level synchronization signal is defined as port 1000, and the beam of the small station's second-level synchronization signal is defined as port 1001. It can be understood that according to the network planning, the network-side device can determine the corresponding relationship between the beam of the macro station's first-level synchronization signal and the beam of the small station's second-level synchronization signal to ensure that the two beams point to the same coverage area (i.e., the area where the terminal is located). According to the predefined rules, the precoding methods of the macro station signal and the small station signal, the generation parameters of the PDSCH DMRS sequence, and the resource mapping information are determined respectively.

[0136] Example 2, such as Figure 8 , Figure 9 As shown, the synchronization signals of multiple small stations / multiple TRPs perform transmit diversity. Multiple small stations or TRPs respectively send synchronization signals, and the coverage areas of the synchronization signals of multiple TRPs overlap. For example, within the overlapping coverage area of TRP1 and TRP2, terminal 1 selects the synchronization signal of TRP1 as a reference to monitor the PDCCH, and terminal 2 selects the synchronization signal of TRP2 as a reference to monitor the PDCCH. The network-side device uses TRP1 and TRP2 for transmit diversity and uses the same time-frequency resource to transmit the PDSCH (such as system information, broadcast or multicast information) to terminal 1 and terminal 2. According to the network configuration, the signal transmitted by TRP1 corresponds to y(0) of the precoding matrix for transmit diversity, and the signal transmitted by TRP2 corresponds to y(1) of the precoding matrix for transmit diversity. Therefore, the information in the DCI obtained by terminal 1 by monitoring the PDCCH with the synchronization signal of TRP1 as a reference includes the transmit diversity trigger information, the number of beams participating in transmit diversity (which can be defaulted to 2 or explicitly indicate the number), and the corresponding position of the signal transmitted by TRP1 in the precoding matrix.

[0137] For example, the precoding matrix is:

[0138]

[0139] Optionally, if the transmit diversity is triggered by DCI after the terminal reads the system information (including the ID and configuration information of each synchronization signal beam), the terminal can determine the synchronization signal beams participating in transmit diversity according to the beam combination information of the synchronization signals carried in the system information; or the DCI explicitly indicates the paired synchronization signal ID or reference signal ID.

[0140] Example 3: In a Cell free network, transmission diversity is performed between two TRPs in a TRP cluster. Figure 10 As shown, the synchronization signal 2 is sent jointly by TRP1 and TRP2, covering the boundary area between the two.

[0141] Please refer to Figure 11 The embodiment of the present application provides a diversity transmission method. The execution subject of the embodiment is a network side device. The method includes:

[0142] Step 201: A network-side device sends a transmission diversity configuration parameter to a terminal; the transmission diversity configuration parameter is used by the terminal to receive a signal sent by the network-side device based on first indication information or a predefined rule.

[0143] Optionally, the configuration parameter of the transmission diversity includes at least one of the following:

[0144] Beam combining for transmit diversity;

[0145] Transmission mode;

[0146] The number of ports corresponding to the beam combination;

[0147] The port identifier corresponding to the beam combination;

[0148] generation parameters of a reference signal sequence corresponding to the beam combination, and time-frequency resource mapping information of the reference signal sequence;

[0149] Precoding information corresponding to the beam combination and resource mapping information corresponding to the precoding information.

[0150] Optionally, the transmission mode includes at least one of the following: single-beam or single-port transmission, multi-beam or multi-port diversity transmission.

[0151] Optionally, the configuration parameter of the transmission diversity is determined by at least one of the following:

[0152] predefined rule, second indication information;

[0153] The second indication information is indicated by at least one of the following: a master information block MIB message, a system information block SIB message, a radio resource control RRC, a medium access control unit MAC CE message and a downlink control information DCI message.

[0154] Optionally, the first indication information includes at least one of the following:

[0155] Transmit diversity trigger information;

[0156] Transmission mode switching indication information.

[0157] Optionally, the beam combination is a synchronization signal beam combination in a preset synchronization signal beam set, or a reference signal beam combination quasi-co-located with the synchronization signal beam in the synchronization signal beam set.

[0158] Optionally, the number of ports corresponding to the beam combination is equal to the number of beams in the beam combination of the transmit diversity;

[0159] The port identifier corresponding to the beam combination is determined based on the beam order or inclusion relationship of the beam combination of the transmit diversity.

[0160] Optionally, the resource mapping information corresponding to the precoding information is obtained by mapping the time-frequency resources corresponding to the precoding information in sequence based on the port order corresponding to the beam combination, or the beam order or inclusion relationship in the beam combination.

[0161] Optionally, the first indication information is indicated by at least one of the following:

[0162] Master Information Block (MIB) message, System Information Block (SIB) message, Radio Resource Control (RRC) message, Medium Access Control Element (MAC CE) message, and Downlink Control Information (DCI) message.

[0163] The method in this embodiment has a specific implementation process and technical effects similar to those in the method embodiment on the terminal side. For specific details, reference can be made to the detailed introduction in the method embodiment on the terminal side, which will not be elaborated here.

[0164] The diversity transmission method provided in the embodiments of the present application may be executed by a diversity transmission device. In the embodiments of the present application, taking the diversity transmission device executing the diversity transmission method as an example, the diversity transmission device provided in the embodiments of the present application is described.

[0165] Figure 12 is one of the schematic structural diagrams of the diversity transmission device provided in the embodiments of the present application. As Figure 12 shown, the diversity transmission device provided in this embodiment includes:

[0166] An obtaining module 110, configured to obtain configuration parameters of transmit diversity;

[0167] A sending module 120, configured to receive a signal sent by a network-side device according to the configuration parameters of the transmit diversity based on the first indication information or a predefined rule.

[0168] Optionally, the configuration parameters of the transmit diversity include at least one of the following:

[0169] Beam combination of transmit diversity;

[0170] Transmission mode;

[0171] The number of ports corresponding to the beam combination;

[0172] The port identifier corresponding to the beam combination;

[0173] The generation parameters of the reference signal sequence corresponding to the beam combination, and the time-frequency resource mapping information of the reference signal sequence;

[0174] The precoding information corresponding to the beam combination and the resource mapping information corresponding to the precoding information.

[0175] Optionally, the transmission mode includes at least one of the following: single-beam or single-port transmission, multi-beam or multi-port diversity transmission.

[0176] Optionally, the configuration parameters of the transmission diversity are determined by at least one of the following:

[0177] Predefined rules, second indication information;

[0178] The second indication information is indicated by at least one of the following: master information block MIB message, system information block SIB message, radio resource control RRC, medium access control unit MAC CE message, and downlink control information DCI message.

[0179] Optionally, the first indication information includes at least one of the following:

[0180] Trigger information for transmission diversity;

[0181] Switching indication information for the transmission mode.

[0182] Optionally, the beam combination is a synchronization signal beam combination in a preset synchronization signal beam set, or a reference signal beam combination quasi-co-located with the synchronization signal beam in the synchronization signal beam set.

[0183] Optionally, the number of ports corresponding to the beam combination is equal to the number of beams in the beam combination of the transmission diversity;

[0184] The port identifier corresponding to the beam combination is determined based on the beam order or inclusion relationship of the beam combination of the transmission diversity.

[0185] Optionally, the resource mapping information corresponding to the precoding information is obtained by mapping the time-frequency resources corresponding to the precoding information in sequence based on the port order corresponding to the beam combination, or the beam order or inclusion relationship in the beam combination.

[0186] Optionally, the first indication information is indicated by at least one of the following:

[0187] Master Information Block MIB message, System Information Block SIB message, Radio Resource Control RRC message, Medium Access Control Unit MAC CE message, and Downlink Control Information DCI message.

[0188] Optionally, when the configuration parameter of the transmit diversity is determined by a predefined rule, the obtaining module 110 includes a processing unit for determining the configuration parameter of the transmit diversity based on the layout mode of the synchronization signal.

[0189] Optionally, the obtaining module 110 is further configured to:

[0190] Monitor the Physical Downlink Control Channel PDCCH to obtain the Downlink Control Information DCI message;

[0191] A processing module for determining whether the Physical Downlink Shared Channel PDSCH adopts a transmit mode of diversity transmission based on the first indication information included in the DCI message.

[0192] Optionally, the beam corresponding to the PDCCH is one of the beam combinations of the transmit diversity.

[0193] Optionally, the processing module is specifically configured to:

[0194] When the transmit mode corresponding to the PDCCH is diversity transmission, determine that the PDSCH adopts a transmit mode of diversity transmission;

[0195] The configuration parameter of the transmit diversity of the PDSCH is the same as the configuration parameter of the transmit diversity of the PDCCH.

[0196] Optionally, when the configuration parameter of the transmit diversity includes the transmit mode, the processing unit is specifically configured to:

[0197] The terminal determines the candidate resources of the synchronization signal based on the layout mode of the synchronization signal;

[0198] The terminal searches for the synchronization signal based on the candidate resources to obtain a search result;

[0199] The terminal determines the transmit mode based on the search result;

[0200] The candidate resources include at least one of the following: time-frequency position or reference signal sequence; different candidate resources represent different transmit modes.

[0201] The device in this embodiment can be used to execute each process in the foregoing method embodiment on the terminal side. Its specific implementation process and technical effect are similar to those in the method embodiment on the terminal side. For details, reference can be made to the detailed introduction in the method embodiment on the terminal side, which will not be elaborated here.

[0202] Figure 13 This is the second schematic structural diagram of the diversity transmission device provided by the embodiments of the present application. As Figure 13 shown, the diversity transmission device provided in this embodiment includes:

[0203] A sending module 210, configured to send configuration parameters of transmission diversity to a terminal; the configuration parameters of the transmission diversity are used for the terminal to receive signals sent by the network side device based on first indication information or a predefined rule.

[0204] Optionally, the configuration parameters of the transmission diversity include at least one of the following:

[0205] Beam combination of transmission diversity;

[0206] Transmission mode;

[0207] The number of ports corresponding to the beam combination;

[0208] The port identifier corresponding to the beam combination;

[0209] The generation parameters of the reference signal sequence corresponding to the beam combination, and the time-frequency resource mapping information of the reference signal sequence;

[0210] The precoding information corresponding to the beam combination and the resource mapping information corresponding to the precoding information.

[0211] Optionally, the transmission mode includes at least one of the following: single beam or single port transmission, multi-beam or multi-port diversity transmission.

[0212] Optionally, the configuration parameters of the transmission diversity are determined by at least one of the following:

[0213] Predefined rule, second indication information;

[0214] The second indication information is indicated by at least one of the following: master information block MIB message, system information block SIB message, radio resource control RRC, media access control unit MAC CE message, and downlink control information DCI message.

[0215] Optionally, the first indication information includes at least one of the following:

[0216] Trigger information of transmission diversity;

[0217] Switching indication information of the transmission mode.

[0218] Optionally, the beam combination is a synchronization signal beam combination in a preset synchronization signal beam set, or a reference signal beam combination that is quasi-co-located with the synchronization signal in the synchronization signal beam set.

[0219] Optionally, the number of ports corresponding to the beam combination is equal to the number of beams in the beam combination of the transmit diversity.

[0220] The port identifier corresponding to the beam combination is determined based on the beam order of the beam combination of the transmit diversity or the inclusion relationship.

[0221] Optionally, the resource mapping information corresponding to the precoding information is obtained by mapping the time-frequency resources corresponding to the precoding information in sequence based on the port order corresponding to the beam combination, the beam order in the beam combination, or the inclusion relationship.

[0222] Optionally, the first indication information is indicated by at least one of the following:

[0223] Master Information Block (MIB) message, System Information Block (SIB) message, Radio Resource Control (RRC) message, Medium Access Control Element (MAC CE) message, and Downlink Control Information (DCI) message.

[0224] The device in this embodiment can be used to execute each process in the foregoing method embodiment of the network-side device. The specific implementation process and technical effect are similar to those in the method embodiment of the network-side device. For details, refer to the detailed description in the method embodiment of the network-side device, which will not be elaborated here.

[0225] The diversity transmission device in the embodiments of the present application can be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device can be a terminal or other devices other than the terminal. Exemplarily, the terminal can include, but is not limited to, the types of the terminal 11 listed above, and other devices can be a server, a Network Attached Storage (NAS), etc. The embodiments of the present application do not make specific limitations.

[0226] The diversity transmission device provided in the embodiments of the present application can implement Figures 2 to 11 each process implemented by the method embodiment and achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0227] Such as Figure 14As shown in the figure, an embodiment of the present application further provides a communication device 1400, including a processor 1401 and a memory 1402. A program or instruction that can run on the processor 1401 is stored on the memory 1402. For example, when the communication device 1400 is a terminal, when the program or instruction is executed by the processor 1401, each step of the above-described embodiment of the diversity transmission method is implemented, and the same technical effect can be achieved. When the communication device 1400 is a network-side device, when the program or instruction is executed by the processor 1401, each step of the above-described embodiment of the diversity transmission method is implemented, and the same technical effect can be achieved. To avoid repetition, details are not described herein again.

[0228] An embodiment of the present application further provides a terminal, including a processor and a communication interface. The communication interface is coupled to the processor, and the processor is configured to run a program or instruction to implement the steps in any of the method embodiments shown in Figures 2 - 10 The terminal embodiment corresponds to the above terminal-side method embodiment. Each implementation process and implementation manner of the above method embodiment can be applied to the terminal embodiment, and the same technical effect can be achieved. Specifically, Figure 15 FIG. is a schematic diagram of the hardware structure of a terminal according to an embodiment of the present application.

[0229] The terminal 1500 includes, but is not limited to, at least some components such as a radio frequency unit 1501, a network module 1502, an audio output unit 1503, an input unit 1504, a sensor 1505, a display unit 1506, a user input unit 1507, an interface unit 1508, a memory 1509, and a processor 1510.

[0230] Those skilled in the art can understand that the terminal 1500 may further include a power source (such as a battery) for supplying power to each component. The power source can be logically connected to the processor 1510 through a power management system, so as to implement functions such as management of charging, discharging, and power consumption management through the power management system. Figure 15 The terminal structure shown in does not limit the terminal. The terminal may include more or fewer components than shown in the figure, or combine some components, or have different component arrangements, which will not be elaborated herein.

[0231] It should be understood that in the embodiments of the present application, the input unit 1504 may include a Graphics Processing Unit (GPU) 15041 and a microphone 15042. The graphics processor 15041 processes the image data of static pictures or videos obtained by an image capture device (such as a camera) in the video capture mode or the image capture mode. The display unit 1506 may include a display panel 15061, and the display panel 15061 may be configured in the form of, for example, a liquid crystal display, an organic light emitting diode, etc. The user input unit 1507 includes at least one of a touch panel 15071 and other input devices 15072. The touch panel 15071 is also referred to as a touch screen. The touch panel 15071 may include two parts: a touch detection device and a touch controller. The other input devices 15072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, which will not be elaborated herein.

[0232] In the embodiments of the present application, after receiving downlink data from a network-side device, the radio frequency unit 1501 may transmit it to the processor 1510 for processing; in addition, the radio frequency unit 1501 may send uplink data to the network-side device. Generally, the radio frequency unit 1501 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, etc.

[0233] The memory 1509 can be used to store software programs or instructions as well as various data. The memory 1509 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data. Among them, the first storage area may store an operating system, application programs or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). In addition, the memory 1509 may include a volatile memory or a non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDR SDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM), and a direct rambus random access memory (DRRAM). The memory 1509 in the embodiments of the present application includes but is not limited to these and any other suitable types of memories.

[0234] The processor 1510 may include one or more processing units; optionally, the processor 1510 integrates an application processor and a modem processor. Among them, the application processor mainly processes operations related to the operating system, user interface, and application programs, etc., and the modem processor mainly processes wireless communication signals, such as a baseband processor. It can be understood that the above-mentioned modem processor may not be integrated into the processor 1510 either.

[0235] Among them, the processor 1510 is used to obtain configuration parameters of transmit diversity;

[0236] The radio frequency unit 1501 is used to receive signals sent by a network-side device according to the configuration parameters of transmit diversity based on the first indication information or a predefined rule.

[0237] Optionally, the configuration parameters of transmit diversity include at least one of the following:

[0238] Beam combining for transmit diversity;

[0239] Transmission mode;

[0240] The number of ports corresponding to the beam combining;

[0241] The port identifier corresponding to the beam combining;

[0242] The generation parameters of the reference signal sequence corresponding to the beam combining, and the time-frequency resource mapping information of the reference signal sequence;

[0243] The precoding information corresponding to the beam combining and the resource mapping information corresponding to the precoding information.

[0244] Optionally, the transmission mode includes at least one of the following: single-beam or single-port transmission, multi-beam or multi-port diversity transmission.

[0245] Optionally, the configuration parameters of the transmit diversity are determined by at least one of the following:

[0246] Predefined rules, second indication information;

[0247] The second indication information is indicated by at least one of the following: master information block MIB message, system information block SIB message, radio resource control RRC, medium access control unit MAC CE message, and downlink control information DCI message.

[0248] Optionally, the first indication information includes at least one of the following:

[0249] The trigger information of the transmit diversity;

[0250] The switching indication information of the transmission mode.

[0251] Optionally, the beam combining is a synchronization signal beam combining in a preset synchronization signal beam set, or a reference signal beam combining that is quasi-co-located with the synchronization signal in the synchronization signal beam set.

[0252] Optionally, the number of ports corresponding to the beam combining is equal to the number of beams in the beam combining of the transmit diversity;

[0253] The port identifier corresponding to the beam combining is determined based on the beam order of the beam combining of the transmit diversity, or the inclusion relationship.

[0254] Optionally, the resource mapping information corresponding to the precoding information is obtained by mapping the time-frequency resources corresponding to the precoding information in sequence based on the port order corresponding to the beam combining, or the beam order in the beam combining, or the inclusion relationship.

[0255] Optionally, the first indication information is indicated by at least one of the following:

[0256] Master Information Block (MIB) message, System Information Block (SIB) message, Radio Resource Control (RRC) message, Medium Access Control Element (MAC CE) message, and Downlink Control Information (DCI) message.

[0257] Optionally, when the configuration parameter of the transmit diversity is determined by a predefined rule, the obtaining module 110 includes a processing unit configured to determine the configuration parameter of the transmit diversity based on the layout mode of the synchronization signal.

[0258] Optionally, the processor 1510 is further configured to:

[0259] Monitor a Physical Downlink Control Channel (PDCCH) to obtain a Downlink Control Information (DCI) message;

[0260] Determine whether a Physical Downlink Shared Channel (PDSCH) adopts a transmit mode of transmit diversity based on the first indication information included in the DCI message.

[0261] Optionally, the beam corresponding to the PDCCH is one of the beam combinations of the transmit diversity.

[0262] Optionally, the processor 1510 is specifically configured to:

[0263] When the transmit mode corresponding to the PDCCH is transmit diversity, determine that the PDSCH adopts a transmit mode of transmit diversity;

[0264] The configuration parameter of the transmit diversity of the PDSCH is the same as the configuration parameter of the transmit diversity of the PDCCH.

[0265] Optionally, when the configuration parameter of the transmit diversity includes the transmit mode, the processor 1510 is specifically configured to:

[0266] The terminal determines candidate resources of the synchronization signal based on the layout mode of the synchronization signal;

[0267] The terminal searches for the synchronization signal based on the candidate resources to obtain a search result;

[0268] The terminal determines the transmit mode based on the search result;

[0269] The candidate resources include at least one of the following: time-frequency position or reference signal sequence; different candidate resources represent different transmit modes.

[0270] It can be understood that the implementation processes of the various implementation manners mentioned in this embodiment may refer to the relevant descriptions of the method embodiments on the terminal side and achieve the same or corresponding technical effects. To avoid repetition, they will not be elaborated herein.

[0271] An embodiment of the present application further provides a network-side device, including a processor and a communication interface. The communication interface is coupled to the processor, and the processor is configured to run a program or an instruction to implement the steps of the method embodiment as Figure 11 shown. This network-side device embodiment corresponds to the above network-side device method embodiment. Each implementation process and implementation manner of the above method embodiment can be applied to this network-side device embodiment and can achieve the same technical effect.

[0272] Specifically, an embodiment of the present application further provides a network-side device. As Figure 16 shown, the network-side device 1600 includes: an antenna 161, a radio frequency device 162, a baseband device 163, a processor 164, and a memory 165. The antenna 161 is connected to the radio frequency device 162. In the uplink direction, the radio frequency device 162 receives information through the antenna 161 and sends the received information to the baseband device 163 for processing. In the downlink direction, the baseband device 163 processes the information to be sent and sends it to the radio frequency device 162. The radio frequency device 162 processes the received information and then sends it out through the antenna 161.

[0273] The method executed by the network-side device in the above embodiments can be implemented in the baseband device 163, and the baseband device 163 includes a baseband processor.

[0274] The baseband device 163 may include, for example, at least one baseband board, and a plurality of chips are arranged on the baseband board. As Figure 16 shown, one of the chips is, for example, a baseband processor, which is connected to the memory 165 through a bus interface to call the program in the memory 165 and execute the network device operations shown in the above method embodiments.

[0275] The network-side device may further include a network interface 166, and this interface is, for example, a Common Public Radio Interface (CPRI).

[0276] Specifically, the network-side device 1600 in the embodiment of the present application further includes: instructions or programs stored on the memory 165 and executable on the processor 164. The processor 164 calls the instructions or programs in the memory 165 to execute Figure 13 the methods executed by the respective modules shown and achieve the same technical effect. To avoid repetition, they will not be elaborated herein.

[0277] The embodiments of the present application further provide a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, it implements each process of the above-mentioned embodiment of the diversity transmission method and can achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0278] Wherein, the processor is the processor in the terminal described in the above embodiment. The readable storage medium includes computer-readable storage media, such as computer read-only memory ROM, random access memory RAM, magnetic disk or optical disc, etc. In some examples, the readable storage medium may be a non-transitory readable storage medium.

[0279] The embodiments of the present application further provide a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run a program or instruction to implement each process of the above-mentioned embodiment of the diversity transmission method and can achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0280] It should be understood that the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, system chip, chip system or system-on-chip.

[0281] The embodiments of the present application further provide a computer program / program product, which is stored in a storage medium. The computer program / program product is executed by at least one processor to implement each process of the above-mentioned embodiment of the diversity transmission method and can achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0282] The embodiments of the present application further provide a communication system, including: a terminal and a network-side device. The terminal can be used to execute the steps of the above-mentioned diversity transmission method, and the network-side device can be used to execute the steps of the above-mentioned diversity transmission method.

[0283] It should be noted that in this text, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising such element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, but may also include performing functions in a substantially simultaneous manner or in the reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0284] From the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of computer software products plus a necessary general hardware platform, and of course, can also be implemented by hardware. The computer software products are stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and include several instructions for causing a terminal or a network-side device to execute the methods described in various embodiments of the present application.

[0285] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms of embodiments without departing from the purpose of the present application and the scope protected by the claims. These embodiments are all within the protection scope of the present application.

Claims

1. A diversity transmission method, characterized in that, including: The terminal obtains the configuration parameters of transmit diversity; The terminal receives the signal sent by the network-side device according to the configuration parameters of the transmit diversity based on the first indication information or a predefined rule.

2. The method according to claim 1, wherein: The configuration parameters of the transmit diversity include at least one of the following: The beam combination of the transmit diversity; The transmission mode; The number of ports corresponding to the beam combination; The port identifier corresponding to the beam combination; The generation parameters of the reference signal sequence corresponding to the beam combination, and the time-frequency resource mapping information of the reference signal sequence; The precoding information corresponding to the beam combination and the resource mapping information corresponding to the precoding information.

3. The method according to claim 2, wherein: The transmission mode includes at least one of the following: single-beam or single-port transmission, multi-beam or multi-port diversity transmission.

4. The method according to any one of claims 1-3, wherein: The configuration parameters of the transmit diversity are determined by at least one of the following: A predefined rule, a second indication information; The second indication information is indicated by at least one of the following: a master information block MIB message, a system information block SIB message, a radio resource control RRC, a media access control unit MAC CE message, and a downlink control information DCI message.

5. The method according to any one of claims 1-4, wherein: The first indication information includes at least one of the following: The trigger information of the transmit diversity; The switching indication information of the transmission mode.

6. The method according to claim 2 or 3, characterized in that, The beam combination is a synchronization signal beam combination in a preset synchronization signal beam set, or a reference signal beam combination quasi-co-located with the synchronization signal in the synchronization signal beam set.

7. The method according to claim 2 or 3, wherein: The number of ports corresponding to the beam combination is equal to the number of beams in the beam combination of the transmit diversity; The port identifier corresponding to the beam combination is determined based on the beam order of the beam combination of the transmit diversity, or the inclusion relationship.

8. The method according to claim 2 or 3, wherein: The resource mapping information corresponding to the precoding information is obtained by mapping the time-frequency resources corresponding to the precoding information in sequence based on the port order corresponding to the beam combination, or the beam order in the beam combination, or the inclusion relationship.

9. The method according to claim 5, wherein: The first indication information is indicated by at least one of the following: A master information block MIB message, a system information block SIB message, a radio resource control RRC message, a media access control unit MAC CE message, and a downlink control information DCI message.

10. The method according to claim 4, characterized in that, When the configuration parameters of the transmit diversity are determined by a predefined rule, the terminal obtains the configuration parameters of the transmit diversity, including: The terminal determines the configuration parameters of the transmit diversity based on the layout mode of the synchronization signal.

11. The method according to any one of claims 1-10, characterized in that, The method further includes: The terminal monitors the physical downlink control channel PDCCH and obtains the downlink control information DCI message; The terminal determines whether the physical downlink shared channel (PDSCH) adopts a transmission mode of diversity transmission based on the first indication information included in the DCI message.

12. The method according to claim 11, wherein: The beam corresponding to the PDCCH is one of the beam combinations of transmit diversity.

13. The method according to claim 11, characterized in that, The terminal determines whether the physical downlink shared channel (PDSCH) adopts a transmission mode of diversity transmission based on the first indication information included in the DCI message, including: When the transmission mode corresponding to the PDCCH is diversity transmission, determining that the PDSCH adopts a transmission mode of diversity transmission; The configuration parameters of the transmit diversity of the PDSCH are the same as the configuration parameters of the transmit diversity of the PDCCH.

14. The method according to claim 10, wherein When the configuration parameters of the transmit diversity include the transmission mode, the terminal determines the configuration parameters of the transmit diversity based on the layout mode of the synchronization signal, including: The terminal determines the candidate resources of the synchronization signal based on the layout mode of the synchronization signal; The terminal searches for the synchronization signal based on the candidate resources to obtain a search result; The terminal determines the transmission mode based on the search result; The candidate resources include at least one of the following: time-frequency position or reference signal sequence; different candidate resources represent different transmission modes.

15. A diversity transmission method, characterized in that, Including: The network side device sends the configuration parameters of transmit diversity to the terminal; The configuration parameters of the transmit diversity are used for the terminal to receive the signal sent by the network side device based on the first indication information or a predefined rule.

16. The method according to claim 15, wherein: The configuration parameters of the transmit diversity include at least one of the following: Beam combination of transmit diversity; Transmission mode; The number of ports corresponding to the beam combination; The port identifier corresponding to the beam combination; The generation parameters of the reference signal sequence corresponding to the beam combination, and the time-frequency resource mapping information of the reference signal sequence; The precoding information corresponding to the beam combination and the resource mapping information corresponding to the precoding information.

17. The method according to claim 16, wherein: The transmission mode includes at least one of the following: single beam or single port transmission, multi-beam or multi-port diversity transmission.

18. The method according to any one of claims 15-17, wherein: The configuration parameters of the transmit diversity are determined by at least one of the following: Predefined rule, second indication information; The second indication information is indicated by at least one of the following: master information block (MIB) message, system information block (SIB) message, radio resource control (RRC), medium access control unit (MAC) CE message, and downlink control information (DCI) message.

19. The method according to any one of claims 15-18, wherein: The first indication information includes at least one of the following: Trigger information of transmit diversity; Switching indication information of the transmission mode.

20. The method according to claim 16 or 17, characterized in that, The beam combination is a synchronization signal beam combination in a preset synchronization signal beam set, or a reference signal beam combination that is quasi-co-located with the synchronization signal beam in the synchronization signal beam set.

21. The method according to claim 16 or 17, wherein the number of ports corresponding to the beam combination is equal to the number of beams in the beam combination of the transmit diversity; the port identifier corresponding to the beam combination is determined based on the beam order of the beam combination of the transmit diversity or an inclusion relationship.

22. The method according to claim 16 or 17, wherein the resource mapping information corresponding to the precoding information is obtained by mapping the time-frequency resources corresponding to the precoding information in sequence based on the port order corresponding to the beam combination, the beam order in the beam combination, or an inclusion relationship.

23. The method according to claim 19, wherein the first indication information is indicated by at least one of the following: master information block MIB message, system information block SIB message, radio resource control RRC message, medium access control element MAC CE message, and downlink control information DCI message.

24. A diversity transmission device, characterized in that, comprising: an obtaining module, configured to obtain configuration parameters of transmit diversity; a sending module, configured to receive a signal sent by a network-side device according to the configuration parameters of the transmit diversity based on the first indication information or a predefined rule.

25. A diversity transmission device, characterized in that, comprising: a sending module, configured to send configuration parameters of transmit diversity to a terminal; the configuration parameters of the transmit diversity are used for the terminal to receive a signal sent by a network-side device based on the first indication information or a predefined rule.

26. A terminal, characterized in that, comprising a processor and a memory, where the memory stores a program or instruction that can run on the processor, and when the program or instruction is executed by the processor, the steps of the diversity transmission method according to any one of claims 1 to 14 are implemented.

27. A network-side device, characterized in that, comprising a processor and a memory, where the memory stores a program or instruction that can run on the processor, and when the program or instruction is executed by the processor, the steps of the diversity transmission method according to any one of claims 15 to 23 are implemented.

28. A readable storage medium, characterized in that, A program or instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, the steps of the diversity transmission method according to any one of claims 1 to 14 are implemented, or the steps of the diversity transmission method according to any one of claims 15 to 23 are implemented.

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