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 determines configuration parameters of transmission diversity; and the terminal monitors control information sent by network side equipment based on the configuration parameters of the transmission diversity.

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 a multi-Transmit / Receive Point (TRP) cell, each TRP or TRP cluster will cover the corresponding area according to the network plan; and multiple TRPs will be deployed in the hotspot coverage area and the cooperative transmission area to provide coverage. Therefore, in a Cell free network architecture, there are areas where the synchronization signal beam coverage 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 easily exceeds 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 the control 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 determines configuration parameters of transmission diversity;

[0007] Based on the configuration parameters of the transmission diversity, the terminal listens for control information sent by a network-side device.

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

[0009] A network-side device sends configuration parameters of transmission diversity to a terminal; the configuration parameters of the transmission diversity are used to listen for control information sent by the network-side device.

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

[0011] A processing module is configured to determine configuration parameters of transmission diversity;

[0012] The processing module is further configured to monitor control information sent by a network-side device based on the configuration parameters of the transmit diversity.

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

[0014] A sending module, configured to send configuration parameters of transmit diversity to a terminal; the configuration parameters of the transmit diversity are used to monitor control information sent by the network-side device.

[0015] In a fifth aspect, a terminal is provided, which 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 determine configuration parameters of transmit diversity for the terminal; the communication interface is configured to monitor control information sent by a network-side device based on the configuration parameters of the transmit diversity.

[0017] In a seventh aspect, a network-side device is provided, which 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 to monitor control information sent by the network-side device.

[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 configured to execute the steps of the method described in the first aspect, and the network-side device can be configured 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 to implement the method described in the second aspect.

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

[0023] In an embodiment of the present application, the terminal determines configuration parameters of transmission diversity; the terminal listens for control information sent by the network-side device based on the configuration parameters of the transmission diversity. The network-side device can send control information to the terminal based on transmission diversity, improving the transmission efficiency of the control 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 transmission diversity based on MIB indication in the diversity transmission method provided by an embodiment of the present application;

[0028] Figure 5 is one of the schematic diagrams of intra-TRP cluster transmission diversity in the diversity transmission method provided by an embodiment of the present application;

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

[0030] Figure 7 is another schematic diagram of resource mapping principle in the diversity transmission method provided by an embodiment of the present application;

[0031] Figure 8 is yet another schematic diagram of resource mapping principle in the diversity transmission method provided by an embodiment of the present application;

[0032] Figure 9 is another schematic flowchart of the diversity transmission method provided by an embodiment of the present application;

[0033] Figure 10 is one of the schematic diagrams of the structure of the diversity transmission device provided by an embodiment of the present application;

[0034] Figure 11 is another schematic diagram of the structure of the diversity transmission device provided by an embodiment of the present application;

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

[0036] Figure 13 It is a schematic structural diagram of a terminal provided by an embodiment of the present application;

[0037] Figure 14 It is a schematic structural diagram of a network-side device provided by an embodiment of the present application. Specific embodiments

[0038] 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 part of the embodiments of the present application, rather than all the embodiments. 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.

[0039] 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 usually 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 indicates an "or" relationship between the associated objects before and after.

[0040] 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.

[0041] 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 terms are 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.

[0042] 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 appliances 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., which are terminal-side devices. 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.

[0043] 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.

[0044] First, the technical terms and application scenarios involved in the embodiments of this application are introduced:

[0045] A Cell free Massive Multiple-Input / Multiple-Output (MIMO) system can be considered as a deconstruction of the traditional Massive MIMO system. In the traditional Massive MIMO system, antennas are concentrated and distributed at a site (base station), and terminals are distributed around the base station in the form of cells. In the Massive MIMO system, a relatively large number of antennas are deployed at each base station. Therefore, it provides a relatively high array gain and spatial resolution. 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, and 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.

[0046] In actual deployment, the Cell free network in a hotspot area can be regarded as a super cell 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.

[0047] 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 included 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 resources occupied by the corresponding broadcast PDCCH and PDSCH will also continue to increase.

[0048] In the LTE system, the space-frequency block code (SFBC) diversity transmission technology is introduced 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 centrally deployed 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.

[0049] However, from the perspective of resource utilization efficiency, for the same broadcast / multicast information (PDSCH or PDCCH), the NR base station needs to sequentially send different synchronization signals (synchronization signal block SSB) beams in turn, resulting in a reduction in resource utilization efficiency. In addition, for different terminal distribution situations or at different times (such as peak hours and idle hours), there may be a situation where the number of terminals in the coverage area of some SSB beams is large and the number of terminals in the coverage area of some SSB beams is small at certain times, resulting in an unbalanced load of PDCCH and PDSCH corresponding to different SSB beams. Therefore, in the method of the embodiments of the present application, for adjacent areas with fewer terminals, the network-side device can select to implement transmission diversity in the coverage areas of two SSB beams to save the time-frequency resource overhead of broadcast / multicast signals.

[0050] Furthermore, 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 in 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 when the number of synchronization signal beams in the cell free network is increasing. 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, and thus use the transmission diversity method to receive the cell-level PDCCH and PDSCH of multiple TRP nodes.

[0051] Connected terminals can use multiple TRPs to achieve coherent or multi-stream transmission based on channel measurement feedback. However, in the unconnected state, due to the lack of a priori channel measurement information, the NR system only introduces a single-beam / single-port transmission mode, that is, the terminal is only associated with one synchronization signal beam corresponding to the TRP or TRP cluster, 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.

[0052] Therefore, in order to solve the problem of system information occupying too many resources in a Cell free network and improve the efficiency of system information transmission, the method of an embodiment of the present invention proposes scheduling multiple TRP nodes to send system information in a transmission diversity manner; replacing the method of multiple TRP nodes sending system information separately.

[0053] The diversity transmission method provided in the embodiment of the present application is described in detail below through some embodiments and their application scenarios in combination with the accompanying drawings.

[0054] Please refer to Figure 2 The embodiment of the present application provides a diversity transmission method. The execution subject of the embodiment is a terminal. The method includes:

[0055] Step 101: The terminal determines the configuration parameters of transmission diversity;

[0056] Specifically, the configuration parameters of the transmission diversity may be obtained by determining through a predefined rule or by determining through information indicated by a network side device. For example, the predefined rule may be a layout mode of a synchronization signal, and the terminal determines the configuration parameters of the transmission diversity based on the layout mode of the synchronization signal or the system information or high-layer signaling sent by the network side device, such as beam combination information, and time-frequency resource information of the control information corresponding to the beam combination, such as the time-frequency resource position of the control information.

[0057] Step 102: The terminal monitors control information sent by the network side device based on the configuration parameters of the transmission diversity.

[0058] Specifically, the terminal detects control information sent by the network side device based on the configuration parameters of the transmission diversity, such as downlink control information DCI, for example, by monitoring the PDCCH to obtain the DCI.

[0059] For example, the terminal determines the time-frequency resource position of the PDCCH control channel according to the configuration parameters of the transmission diversity, and detects the control information according to the transmission mode of the diversity transmission.

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

[0061] Optionally, this method can be applied to PDCCH monitoring before the terminal connection state and PDCCH monitoring for paging in the idle state.

[0062] Optionally, the configuration parameters of the transmit diversity include at least one of the following:

[0063] Trigger information of the transmit diversity;

[0064] Beam combination of the transmit diversity;

[0065] Transmission mode;

[0066] The number of ports corresponding to the beam combination;

[0067] The port identifier corresponding to the beam combination;

[0068] Generation parameters of the reference signal sequence corresponding to the beam combination, and time-frequency resource mapping information of the reference signal sequence;

[0069] Precoding information corresponding to the beam combination and resource mapping information corresponding to the precoding information;

[0070] Time-frequency resource mapping information of the control information corresponding to the beam combination.

[0071] Optionally, the beams in the beam combination are synchronization signal beams or reference signal beams.

[0072] Among them, the beam combination of the transmit diversity is, for example, multiple candidate beam combinations, and the specific beams included in each beam combination.

[0073] Optionally, the port identifier can be represented by a port number, for example.

[0074] Optionally, the reference signal sequence can be a Demodulation Reference Signal (DMRS) sequence, for example.

[0075] Optionally, the transmission mode includes at least one of the following: single-beam or single-port transmission, multi-beam or multi-port diversity transmission.

[0076] 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.

[0077] Optionally, the time-frequency resource mapping information of the control information is, for example, a Control Resource Set (CORESET)

[0078] Optionally, the configuration parameters of the transmit diversity are determined by at least one of the following:

[0079] Predefined rules, first indication information;

[0080] 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), Medium Access Control Control Element (MAC CE) message.

[0081] Specifically, the predefined rules include, for example: the layout of synchronization signals, for example: Synchronization Signal Beam Pattern 1 (SS beam pattern 1) corresponds to single-beam transmission / single-port transmission; Synchronization Signal Beam Pattern 2 (SS beam pattern 2) corresponds to diversity transmission.

[0082] Or, the configuration parameters of the 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 can indicate that before entering the connected state to configure other transmission modes, the downlink signal is transmitted using the transmit diversity mode.

[0083] Or, the configuration parameters of the 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 the transmit diversity, or the PDCCH and / or PDSCH corresponding to the beam combination of the synchronization signal beams use transmit diversity.

[0084] Or, the configuration parameters of the transmit diversity are indicated by high-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 enables or disables the transmit diversity of the beam combination (for example, the transmit diversity of the PDCCH and / or PDSCH of the paging message).

[0085] It can be understood that the above several ways of obtaining the configuration parameters can be combined with each other to determine a complete set of configuration parameters of the transmit diversity. For example, the SIB message configures several candidate beam combinations of the transmit diversity and the corresponding PDCCH time-frequency resources, and the terminal is activated by the MAC CE signaling to use one of the candidate beam combinations to implement the PDCCH transmit diversity.

[0086] 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 in the synchronization signal beam set.

[0087] 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;

[0088] 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.

[0089] Among them, the beam order or the port number order can be the order arranged in sequence according to the beam numbers. For example, the port numbers are determined according to the SSB number order. Beam 1 corresponds to port number 1001, and beam 2 corresponds to 1002. For example, the port numbers of the transmit diversity are determined according to the number size of the reference signal corresponding to the beam of the transmit diversity.

[0090] The inclusion relationship refers to, for example, the inclusion relationship between the superior synchronization signal beam and the inferior 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. For example, the first-level synchronization signal beam corresponds to port number 1001, and the second-level synchronization signal beam corresponds to port number 1002.

[0091] 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.

[0092] Specifically, different numbers of beams in the 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.

[0093] 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.

[0094] Optionally, according to a predefined rule, transmission mode 1 (for example, single-beam transmission / single-port transmission) is the default transmission mode for the idle-state PDCCH or PDSCH. 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 a MAC CE or an RRC message.

[0095] Optionally, when the configuration parameter of the transmit diversity is determined by a predefined rule, the terminal obtains the configuration parameter of the transmit diversity, including:

[0096] The terminal determines the configuration parameter of the transmit diversity based on the layout mode of the synchronization signal.

[0097] Optionally, when the configuration parameter of the transmit diversity includes the transmission mode, the terminal determines the configuration parameter of the transmit diversity based on the layout mode of the synchronization signal, including:

[0098] The terminal determines the candidate resources of the synchronization signal based on the layout mode of the synchronization signal;

[0099] The terminal searches for the synchronization signal based on the candidate resource set to obtain a search result;

[0100] The terminal determines the transmission mode based on the search result;

[0101] The candidate resources include at least one of the following: time-frequency position or reference signal sequence; different candidate resource sets represent different transmission modes.

[0102] Specifically, the candidate resources supporting transmit diversity are determined through 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 PDCCH single-beam transmission, and the other type of sync raster is for the candidate frequency points of the synchronization signal for PDCCH transmit diversity. The terminal searches for the synchronization signal at the candidate frequency points of the two types of sync rasters and determines the transmission mode of the synchronization signal beam based on the search result of the synchronization signal.

[0103] For example, it is determined whether to use transmit diversity through the time-frequency position or the reference signal sequence (such as the preamble sequence set). The protocol defines two types of synchronization signal preamble sets corresponding to different transmissions of the synchronization signal. One type of preamble set is for the synchronization signal for PDCCH single-beam transmission, and the other type of preamble set is for the synchronization signal for PDCCH transmit diversity.

[0104] 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.

[0105] Optionally, the predefined rule may be that the synchronization signals detected within the same time period are beam pairings for transmit diversity. For example, two or more synchronization signals of consecutive orthogonal frequency division multiplexing (OFDM) symbols within a time slot are paired for transmit diversity. Further, the transmit 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 transmit diversity.

[0106] Optionally, the transmit diversity of PDCCH and / or PDSCH is indicated by an MIB message. Whether the current synchronization signal supports transmit diversity is notified in the MIB message. For example, 1-bit information in the MIB message indicates whether the synchronization signal beam associated with the MIB uses transmit diversity for transmitting PDCCH and / or PDSCH. For example, the determination rule for the predefined synchronization signal beam combination, such as there are 4 synchronization signal beams within a time period. The terminal reads the MIB message in the corresponding synchronization signal to determine whether the 4 synchronization signals within this time period (e.g., a time slot) need to form a combination for transmit diversity. For example, as Figure 4 shown, the 4 SSBs within a time slot are SSB#0, SSB#1, SSB#2, and SSB#3 respectively. By reading the MIB messages corresponding to the four SSBs, the SSBs enabling transmit diversity form a beam combination for transmit diversity. For example, if the MIB messages corresponding to SSB#0 and SSB#1 are configured with transmit diversity enabled (i.e., triggering transmit diversity), then the terminals that select SSB#0 or SSB#1 to access the cell use the transmit diversity of SSB#0 and SSB#1 to receive the downlink signals PDCCH and / or PDSCH in subsequent procedures. Another example is that in a Cell free network where the TRP cluster sends synchronization signals, the network supports transmit 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 transmit diversity; as Figure 5 shown, the MIB indicates the frequency or time offset. The terminal receives the synchronization signals of each TRP within the TRP cluster and / or receives the configuration parameters of transmit diversity.

[0107] Optionally, the SIB message indicates PDSCH and / or PDCCH transmission diversity. For example, the SIB message carries the pairing relationship between synchronization signals. When receiving downlink signals later, the terminal determines the synchronization signal beams participating in transmission 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 transmission diversity mode.

[0108] Optionally, the higher layer signaling indicates PDCCH and / or PDSCH transmission diversity. For example, the network configures, through higher layer signaling, the PDCCH resources for the terminal to monitor paging messages to be associated with two or more synchronization signal beams, and the corresponding PDCCH and PDSCH receive paging messages in the transmission 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 maximum signal strength among the two or more synchronization signal beams selected for the above-mentioned transmission diversity is selected as the receiving beam.

[0109] Optionally, the control information is carried by the physical downlink control channel PDCCH, and the control information is used to schedule the physical downlink shared channel PDSCH, where the PDSCH is a PDSCH for diversity transmission or a PDSCH for single-beam transmission.

[0110] Optionally, the transmission mode of the PDSCH is the same as that of the PDCCH.

[0111] Optionally, the control information includes second indication information, and the second indication information is used to indicate the beam information for transmitting the PDSCH.

[0112] Optionally, the single beam used for single-beam transmission is one of the beam combinations for diversity transmission.

[0113] Optionally, the second indication information is represented by a bitmap, and the length of the bitmap is the same as the number of beams in the beam combination for transmission diversity;

[0114] The bits of the bitmap correspond one by one to the ports corresponding to the beams in the beam combination for transmission diversity.

[0115] Specifically, the PDSCH can be scheduled by control information (DCI) of transmit diversity, which can be the PDSCH of transmit diversity or the PDSCH of single-beam transmission. For example, by default, the PDSCH transmission mode remains consistent with the transmission mode of the control information, and the relevant configuration parameters are consistent with the configuration parameters of the control channel. The control information schedules the PDSCH for single-beam transmission, and optionally, the single beam is one of the beams of transmit diversity. Optionally, the control information includes a field (such as the second indication information) for indicating the PDSCH transmission beam.

[0116] For example, the second indication information is indicated in a bitmap manner, where the length of the bitmap is the same as the number of beams in the beam combination of transmit diversity, and each bit of the bitmap corresponds one by one to the transmit diversity beams in the order of port numbers. For example, if the base station determines that the channel condition of the terminal is suitable for single-beam transmission based on the uplink received signal, it can schedule the PDSCH for single-beam transmission, that is, concentrate the power on one synchronization signal beam. For example, in the random access process, the terminal listens to CORESET#0 and Msg2 messages according to transmit diversity. After the terminal sends Msg3, the base station determines whether to use transmit diversity for the subsequent downlink PDSCH based on the signal reception quality of Msg3 on each beam of transmit diversity. For example, if the signal quality of Msg3 on each beam is not much different, it is suitable to use transmit diversity; otherwise, it is suitable to use single-beam transmission.

[0117] Optionally, the terminal determines the configuration parameters of transmit diversity, including:

[0118] The terminal determines the time-frequency resource mapping information of the control information corresponding to the beam combination based on the beam combination and mapping rule included in the configuration parameters of the transmit diversity;

[0119] The mapping rule includes at least one of the following:

[0120] Each beam in the beam combination is mapped according to the offset information of the time-frequency resource corresponding to the control information;

[0121] The beam combination is mapped as a whole to the time-frequency resource corresponding to the control information.

[0122] Specifically, after determining the beam combination of transmit diversity, determine the correspondence between the time-frequency resources and beams of the PDCCH. For example, the terminal can determine the mapping relationship between the synchronization signal beam and the PDCCH monitoring occasion according to the SIB message, and whether each time-frequency resource of the PDCCH performs transmit diversity.

[0123] Optionally, each beam is independently mapped according to the time-frequency offset between the synchronization signal beam and the PDCCH time-frequency resource in the configuration parameters. After the mapping result is determined, the PDCCH corresponding to each synchronization signal beam monitors the PDCCH according to the corresponding transmission mode; or the beam combination of transmit diversity is mapped as a whole together with the PDCCH time-frequency resource, and the PDCCH is monitored according to transmit diversity on the corresponding PDCCH time-frequency resource; or, each beam is independently mapped according to the time-frequency offset between the synchronization signal beam and the PDCCH time-frequency resource in the configuration parameters. When the PDCCH time-frequency resources corresponding to the beams in the beam combination overlap, the PDCCH is monitored using transmit diversity, otherwise the PDCCH is monitored according to the single-beam transmission mode; or, each beam is independently mapped according to the time-frequency offset between the synchronization signal beam and the PDCCH time-frequency resource in the configuration parameters, and each beam combination of transmit diversity is mapped according to the time-frequency offset between the synchronization signal beam combination and the PDCCH time-frequency resource in the dedicated configuration parameters, and the PDCCH time-frequency resource mapping relationships corresponding to each transmission mode are determined respectively. Optionally, the configuration parameters of the transmit diversity further include: a first search space for control information of single-beam or single-port transmission, and a second search space for control information of multi-beam or multi-port diversity transmission. It can be understood that when the network does not configure a dedicated second search space for the transmit diversity mode, the first search space of single-beam transmission is reused. Further, according to protocol predefinition or network configuration, the priorities between different transmission modes (single-beam transmission and transmit diversity) are defined; when the PDCCH time-frequency resources or search spaces of different transmission modes overlap / conflict, or exceed the upper limit of the blind detection quantity of the control information of the terminal, the terminal preferentially retrieves the corresponding search space of the transmission mode with a higher priority according to the priorities of different transmission modes.

[0124] Optionally, the terminal monitors the control information sent by the network device based on the configuration parameters of the transmit diversity, including at least one of the following:

[0125] When each beam in the beam combination is mapped according to the offset information of the time-frequency resource corresponding to the control information, the terminal monitors the control information sent by the network device on the second search space in the manner of diversity transmission based on the configuration parameters of the transmit diversity;

[0126] When each beam in the beam combination is mapped according to the offset information of the time-frequency resource corresponding to the control information, the terminal monitors the control information sent by the network device on the first search space in the manner of single-beam transmission based on the configuration parameters of each beam.

[0127] In the beam combination, each beam is mapped according to the offset information of the time-frequency resource corresponding to the control information. When the time-frequency resources of the control information corresponding to the beam combination overlap, the terminal listens for the control information sent by the network-side device on the second search space in the manner of diversity transmission based on the configuration parameters of the transmit diversity;

[0128] In the beam combination, each beam is mapped according to the offset information of the time-frequency resource corresponding to the control information. When the time-frequency resources of the control information corresponding to the beam combination do not overlap, the terminal listens for the control information sent by the network-side device on the first search space in the manner of single-beam or single-port transmission based on the configuration parameters of the transmit diversity.

[0129] Specifically, as Figure 6 shown, assume that SSB#0 and SSB#1 perform transmit diversity. Each beam in the beam combination is mapped according to the offset information of the time-frequency resource corresponding to the control information. The terminal listens for the control information sent by the network-side device on the second search space in the manner of diversity transmission based on the configuration parameters of the transmit diversity;

[0130] Or, each beam in the beam combination is mapped according to the offset information of the time-frequency resource corresponding to the control information. The terminal listens for the control information sent by the network-side device on the first search space in the manner of single-beam transmission based on the configuration parameters of the transmit diversity.

[0131] As Figure 7 shown, each beam in the beam combination is mapped according to the offset information of the time-frequency resource corresponding to the control information. When the time-frequency resources of the control information corresponding to each beam overlap, the terminal listens for the control information sent by the network-side device on the second search space in the manner of diversity transmission based on the configuration parameters of the transmit diversity; or,

[0132] Each beam in the beam combination is mapped according to the offset information of the time-frequency resource corresponding to the control information. When the time-frequency resources of the control information corresponding to each beam do not overlap, the terminal listens for the control information sent by the network-side device on the first search space in the manner of single-beam transmission based on the configuration parameters of the transmit diversity.

[0133] Optionally, when the beam combination is mapped as a whole to the time-frequency resource corresponding to the control information, the terminal listens for the control information sent by the network-side device based on the configuration parameters of the transmit diversity, including at least one of the following:

[0134] The terminal listens for the control information sent by the network-side device on the second search space in the manner of diversity transmission based on the configuration parameters of the transmit diversity;

[0135] Based on the configuration parameters of the transmission diversity, the terminal listens for the control information sent by the network-side device on the first search space in the manner of single-beam or single-port transmission.

[0136] Specifically, as Figure 8 shown, assuming that SSB#0 and SSB#1 perform transmission diversity, in the case where the beam combination is mapped as a whole to the time-frequency resources corresponding to the control information, the terminal listens for the control information sent by the network-side device on the second search space in the manner of diversity transmission based on the configuration parameters of the transmission diversity; or,

[0137] Based on the configuration parameters of the transmission diversity, the terminal listens for the control information sent by the network-side device on the first search space in the manner of single-beam or single-port transmission.

[0138] It can be understood that the first search space and the second search space are predefined by the protocol or configured through system messages or high-layer signaling.

[0139] Optionally, the terminal listens for the PDCCH signal corresponding to the synchronization signal beam combination in the manner of transmission diversity. The configuration parameters for PDCCH transmission determined according to system messages / high-layer signaling / predefined rules include at least one of the following: the beam combination of the transmission 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; the time-frequency resource mapping information of the control information corresponding to the beam combination.

[0140] For example, the terminal determines the port number according to the synchronization signal number in the beam combination; determines the resource mapping position in the precoding matrix through different port numbers. Determines different Orthogonal Covering Codes (OCCs) of the DMRS according to different port numbers, or determines different time-frequency resource mapping positions.

[0141] In the above embodiments, by different transmission modes and resource mapping schemes, the control information sent by the network-side device is listened for, with relatively high flexibility.

[0142] Please refer to Figure 9 , this embodiment of the present application provides a diversity transmission method. The execution subject of this embodiment is the network-side device, and the method includes:

[0143] Step 201: The network-side device sends the configuration parameters of the transmission diversity to the terminal; the configuration parameters of the transmission diversity are used for listening for the control information sent by the network-side device.

[0144] It can be understood that the terminal receives the configuration parameters of transmit diversity sent by the network-side device and can monitor the control information sent by the network-side device based on the configuration parameters of transmit diversity.

[0145] Optionally, the configuration parameters of the transmit diversity include at least one of the following:

[0146] Trigger information of transmit diversity;

[0147] Beam combination of transmit diversity;

[0148] Transmission mode;

[0149] The number of ports corresponding to the beam combination;

[0150] The port identifier corresponding to the beam combination;

[0151] 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;

[0152] The precoding information corresponding to the beam combination and the resource mapping information corresponding to the precoding information;

[0153] The time-frequency resource mapping information of the control information corresponding to the beam combination.

[0154] Optionally, the configuration parameters of the transmit diversity are determined by at least one of the following:

[0155] Predefined rules, first indication information;

[0156] The first indication information is carried by at least one of the following:

[0157] Master Information Block (MIB) message, System Information Block (SIB) message, Radio Resource Control (RRC), Medium Access Control Element (MAC CE) message.

[0158] Optionally, the configuration parameters of the transmit diversity further include: the first search space for the control information of single-beam or single-port transmission, and the second search space for the control information of multi-beam or multi-port diversity transmission.

[0159] Optionally, the control information is carried by the Physical Downlink Control Channel (PDCCH), and the control information is used to schedule the Physical Downlink Shared Channel (PDSCH), where the PDSCH is the PDSCH for diversity transmission or the PDSCH for single-beam transmission.

[0160] Optionally, the transmission mode of the PDSCH is the same as that of the PDCCH.

[0161] Optionally, the control information includes second indication information for indicating beam information for transmitting the PDSCH.

[0162] Optionally, the single beam used for single-beam transmission is one of the beam combinations for diversity transmission.

[0163] Optionally, the second indication information is represented by a bitmap, and the length of the bitmap is the same as the number of beams in the beam combination for transmit diversity;

[0164] The bits of the bitmap correspond one by one to the ports corresponding to the beams in the beam combination for transmit diversity.

[0165] The specific implementation process and technical effects of the method in this embodiment are 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.

[0166] In the diversity transmission method provided in the embodiments of the present application, the execution entity may be 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.

[0167] Figure 10 is one of the schematic structural diagrams of the diversity transmission device provided in the embodiments of the present application. As Figure 10 shown, the diversity transmission device provided in this embodiment includes:

[0168] A processing module 110, configured to determine configuration parameters for transmit diversity;

[0169] The processing module 110 is further configured to monitor control information sent by a network-side device based on the configuration parameters for transmit diversity.

[0170] Optionally, the configuration parameters for transmit diversity include at least one of the following:

[0171] Trigger information for transmit diversity;

[0172] Beam combination for transmit diversity;

[0173] Transmission mode;

[0174] The number of ports corresponding to the beam combination;

[0175] The port identifier corresponding to the beam combination;

[0176] Generation parameters of the reference signal sequence corresponding to the beam combination, and time-frequency resource mapping information of the reference signal sequence;

[0177] Precoding information corresponding to the beam combination and resource mapping information corresponding to the precoding information;

[0178] The time-frequency resource mapping information of the control information corresponding to the beam combination.

[0179] Optionally, the configuration parameter of the transmit diversity is determined by at least one of the following:

[0180] Predefined rules, first indication information;

[0181] The first indication information is carried by at least one of the following:

[0182] Master Information Block (MIB) message, System Information Block (SIB) message, Radio Resource Control (RRC), Medium Access Control Element (MAC CE) message.

[0183] Optionally, the processing module 110 is specifically configured to:

[0184] Based on the beam combination and mapping rules included in the configuration parameter of the transmit diversity, determine the time-frequency resource mapping information of the control channel corresponding to the beam combination;

[0185] The mapping rules include at least one of the following:

[0186] Each beam in the beam combination is mapped according to the offset information of the time-frequency resource corresponding to the control channel;

[0187] The beam combination is mapped as a whole to the time-frequency resource corresponding to the control channel.

[0188] Optionally, the configuration parameter of the transmit diversity further includes: a first search space for control information of single-beam or single-port transmission, and a second search space for control information of multi-beam or multi-port diversity transmission.

[0189] Optionally, the processing module 110 is specifically configured to perform at least one of the following:

[0190] When each beam in the beam combination is mapped according to the offset information of the time-frequency resource corresponding to the control information, based on the configuration parameter of the transmit diversity, listen for the control information sent by the network-side device on the second search space in a diversity transmission manner;

[0191] When each beam in the beam combination is mapped according to the offset information of the time-frequency resource corresponding to the control information, based on the configuration parameter of each beam, listen for the control information sent by the network-side device on the first search space in a single-beam transmission manner;

[0192] In the beam combination, each beam is mapped according to the offset information of the time-frequency resource corresponding to the control information. When there is an overlap in the time-frequency resources of the control information corresponding to the beam combination, based on the configuration parameters of the transmit diversity, the control information sent by the network-side device is monitored on the second search space in a diversity transmission manner;

[0193] In the beam combination, each beam is mapped according to the offset information of the time-frequency resource corresponding to the control information. When there is no overlap in the time-frequency resources of the control information corresponding to the beam combination, based on the configuration parameters of the transmit diversity, the control information sent by the network-side device is monitored on the first search space in a single-beam or single-port transmission manner.

[0194] Optionally, when the beam combination is mapped as a whole to the time-frequency resource corresponding to the control information, the processing module 110 is specifically configured to perform at least one of the following:

[0195] Based on the configuration parameters of the transmit diversity, the control information sent by the network-side device is monitored on the second search space in a diversity transmission manner;

[0196] Based on the configuration parameters of the transmit diversity, the control information sent by the network-side device is monitored on the first search space in a single-beam or single-port transmission manner.

[0197] Optionally, the control information is carried by a Physical Downlink Control Channel (PDCCH), and the control information is used to schedule a Physical Downlink Shared Channel (PDSCH), where the PDSCH is a PDSCH for multi-beam diversity transmission or a PDSCH for single-beam transmission.

[0198] Optionally, the transmission mode of the PDSCH is the same as that of the PDCCH.

[0199] Optionally, the control information includes second indication information, and the second indication information is used to indicate the beam information for transmitting the PDSCH.

[0200] Optionally, the single beam used for the single-beam transmission is one beam in the beam combination for diversity transmission.

[0201] Optionally, the second indication information is represented by a bitmap, and the length of the bitmap is the same as the number of beams in the beam combination for transmit diversity;

[0202] The bits of the bitmap correspond one-to-one to the ports corresponding to the beams in the beam combination for transmit diversity.

[0203] The device of this embodiment can be used to execute each process in the foregoing method embodiment on the terminal side. The specific implementation process and technical effects are similar to those in the method embodiment on the terminal side. For details, please refer to the detailed introduction in the method embodiment on the terminal side, which will not be elaborated here.

[0204] Figure 11 It is the second structural schematic diagram of the diversity transmission device provided by the embodiment of the present application. As Figure 11 shown, the diversity transmission device provided by this embodiment includes:

[0205] A sending module 210, configured to send configuration parameters of transmission diversity to a terminal; the configuration parameters of the transmission diversity are used to listen for control information sent by the network-side device.

[0206] Optionally, the configuration parameters of the transmission diversity include at least one of the following:

[0207] Trigger information of the transmission diversity;

[0208] Beam combination of the transmission diversity;

[0209] Transmission mode;

[0210] The number of ports corresponding to the beam combination;

[0211] The port identifier corresponding to the beam combination;

[0212] Generation parameters of the reference signal sequence corresponding to the beam combination, and time-frequency resource mapping information of the reference signal sequence;

[0213] Precoding information corresponding to the beam combination and resource mapping information corresponding to the precoding information;

[0214] Time-frequency resource mapping information of the control information corresponding to the beam combination.

[0215] Optionally, the configuration parameters of the transmission diversity are determined by at least one of the following:

[0216] Predefined rules, first indication information;

[0217] The first indication information is carried by at least one of the following:

[0218] Master information block MIB message, system information block SIB message, radio resource control RRC, medium access control unit MACCE message.

[0219] Optionally, the configuration parameters of the transmission diversity further include: a first search space for control information of single-beam or single-port transmission, and a second search space for control information of multi-beam or multi-port diversity transmission.

[0220] Optionally, the control information is carried by a Physical Downlink Control Channel (PDCCH), and the control information is used to schedule a Physical Downlink Shared Channel (PDSCH), where the PDSCH is a PDSCH for diversity transmission or a PDSCH for single-beam transmission.

[0221] Optionally, the transmission mode of the PDSCH is the same as that of the PDCCH.

[0222] Optionally, the control information includes second indication information, and the second indication information is used to indicate beam information for transmitting the PDSCH.

[0223] Optionally, the single beam used for single-beam transmission is one of the beam combinations for diversity transmission.

[0224] Optionally, the second indication information is represented by a bitmap, and the length of the bitmap is the same as the number of beams in the beam combination for transmit diversity;

[0225] The bits of the bitmap correspond one by one to the ports corresponding to the beams in the beam combination for transmit diversity.

[0226] The apparatus 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, reference can be made to the detailed description in the method embodiment of the network-side device, which will not be elaborated here.

[0227] The diversity transmission apparatus in the embodiments of the present application may 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 may be a terminal or other devices other than the terminal. Exemplarily, the terminal may include, but is not limited to, the types of the terminal 11 listed above, and other devices may be a server, a Network Attached Storage (NAS), etc., which are not specifically limited in the embodiments of the present application.

[0228] The diversity transmission apparatus provided in the embodiments of the present application can implement Figures 2 to 9 each process implemented by the method embodiment and achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0229] As Figure 12As shown in the figure, an embodiment of the present application further provides a communication device 1200, including a processor 1201 and a memory 1202. A program or instruction that can run on the processor 1201 is stored on the memory 1202. For example, when the communication device 1200 is a terminal, when the program or instruction is executed by the processor 1201, 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 1200 is a network-side device, when the program or instruction is executed by the processor m01, 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, it will not be elaborated here.

[0230] 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 the method embodiment as Figure 2 shown. This terminal embodiment corresponds to the above-described terminal-side method embodiment. Each implementation process and implementation manner of the above-described method embodiment can be applied to this terminal embodiment, and the same technical effect can be achieved. Specifically, Figure 13 FIG. is a schematic diagram of the hardware structure of a terminal according to an embodiment of the present application.

[0231] The terminal 1300 includes, but is not limited to, at least some components such as a radio frequency unit 1301, a network module 1302, an audio output unit 1303, an input unit 1304, a sensor 1305, a display unit 1306, a user input unit 1307, an interface unit 1308, a memory 1309, and a processor 1310.

[0232] Those skilled in the art can understand that the terminal 1300 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 1310 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 13 The terminal structure shown in does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown in the figure, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0233] It should be understood that in the embodiments of the present application, the input unit 1304 may include a Graphics Processing Unit (GPU) 13041 and a microphone 13042. The graphics processor 13041 processes the image data of static pictures or videos obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 1306 may include a display panel 13061, and the display panel 13061 may be configured in the form of, for example, a liquid crystal display, an organic light emitting diode, etc. The user input unit 1307 includes at least one of a touch panel 13071 and other input devices 13072. The touch panel 13071 is also referred to as a touch screen. The touch panel 13071 may include two parts: a touch detection device and a touch controller. The other input devices 13072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which will not be elaborated here.

[0234] In the embodiments of the present application, after receiving downlink data from a network-side device, the radio frequency unit 1301 may transmit it to the processor 1310 for processing; in addition, the radio frequency unit 1301 may send uplink data to the network-side device. Generally, the radio frequency unit 1301 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0235] The memory 1309 can be used to store software programs or instructions and various data. The memory 1309 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 1309 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 1309 in the embodiments of the present application includes but is not limited to these and any other suitable types of memories.

[0236] The processor 1310 may include one or more processing units; optionally, the processor 1310 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 modem processor may not be integrated into the processor 1310.

[0237] Among them, the processor 1310 is used to determine the configuration parameters of transmit diversity;

[0238] The radio frequency unit 1301 is used to listen for control information sent by the network-side device based on the configuration parameters of transmit diversity.

[0239] Optionally, the configuration parameters of transmit diversity include at least one of the following:

[0240] The trigger information of transmit diversity;

[0241] Beam combination for transmit diversity;

[0242] Transmission mode;

[0243] The number of ports corresponding to the beam combination;

[0244] The port identifier corresponding to the beam combination;

[0245] 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;

[0246] The precoding information corresponding to the beam combination and the resource mapping information corresponding to the precoding information;

[0247] The time-frequency resource mapping information of the control information corresponding to the beam combination.

[0248] Optionally, the configuration parameters of the transmit diversity are determined by at least one of the following:

[0249] Predefined rules, first indication information;

[0250] The first indication information is carried by at least one of the following:

[0251] Master Information Block MIB message, System Information Block SIB message, Radio Resource Control RRC, Medium Access Control Element MACCE message.

[0252] Optionally, the processing module 110 is specifically configured to:

[0253] Based on the beam combination and mapping rules included in the configuration parameters of the transmit diversity, determine the time-frequency resource mapping information of the control channel corresponding to the beam combination;

[0254] The mapping rules include at least one of the following:

[0255] Each beam in the beam combination is mapped according to the offset information of the time-frequency resource corresponding to the control channel;

[0256] The beam combination is mapped as a whole to the time-frequency resource corresponding to the control channel.

[0257] Optionally, the configuration parameters of the transmit diversity further include: the first search space of the control information for single-beam or single-port transmission, and the second search space of the control information for multi-beam or multi-port diversity transmission.

[0258] Optionally, the processor 1310 is specifically configured to perform at least one of the following:

[0259] When each beam in the beam combination is mapped according to the offset information of the time-frequency resource corresponding to the control information, based on the configuration parameters of the transmit diversity, listen for the control information sent by the network-side device on the second search space in a diversity transmission manner;

[0260] When each beam in the beam combination is mapped according to the offset information of the time-frequency resource corresponding to the control information, based on the configuration parameters of each beam, listen for the control information sent by the network-side device on the first search space in a single-beam transmission manner;

[0261] When each beam in the beam combination is mapped according to the offset information of the time-frequency resource corresponding to the control information, and the time-frequency resources of the control information corresponding to the beam combination overlap, based on the configuration parameters of the transmit diversity, listen for the control information sent by the network-side device on the second search space in a diversity transmission manner;

[0262] When each beam in the beam combination is mapped according to the offset information of the time-frequency resource corresponding to the control information, and the time-frequency resources of the control information corresponding to the beam combination do not overlap, based on the configuration parameters of the transmit diversity, listen for the control information sent by the network-side device on the first search space in a single-beam or single-port transmission manner.

[0263] Optionally, when the beam combination is mapped as a whole to the time-frequency resource corresponding to the control information, the processor 1310 is specifically configured to perform at least one of the following:

[0264] Based on the configuration parameters of the transmit diversity, listen for the control information sent by the network-side device on the second search space in a diversity transmission manner;

[0265] Based on the configuration parameters of the transmit diversity, listen for the control information sent by the network-side device on the first search space in a single-beam or single-port transmission manner.

[0266] Optionally, the control information is carried by a physical downlink control channel PDCCH, and the control information is used to schedule a physical downlink shared channel PDSCH, where the PDSCH is a PDSCH for multi-beam diversity transmission or a PDSCH for single-beam transmission.

[0267] Optionally, the transmission mode of the PDSCH is the same as the transmission mode of the PDCCH.

[0268] Optionally, the control information includes second indication information, and the second indication information is used to indicate the beam information for transmitting the PDSCH.

[0269] Optionally, the single beam used in the single beam transmission is one of the beam combinations for diversity transmission.

[0270] Optionally, the second indication information is represented by a bitmap, and the length of the bitmap is the same as the number of beams in the beam combination for transmission diversity;

[0271] The bits of the bitmap correspond one by one to the ports corresponding to the beams in the beam combination for transmission diversity.

[0272] 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 embodiment as Figures 2 - 8 shown, and the same or corresponding technical effects can be achieved. To avoid repetition, details are not described herein again.

[0273] The 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 9 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 the same technical effects can be achieved.

[0274] Specifically, the embodiment of the present application further provides a network-side device. As Figure 14 shown, the network-side device 1400 includes: an antenna 141, a radio frequency device 142, a baseband device 143, a processor 144, and a memory 145. The antenna 141 is connected to the radio frequency device 142. In the uplink direction, the radio frequency device 142 receives information through the antenna 141 and sends the received information to the baseband device 143 for processing. In the downlink direction, the baseband device 143 processes the information to be sent and sends it to the radio frequency device 142. The radio frequency device 142 processes the received information and then sends it out through the antenna 141.

[0275] The method executed by the network-side device in the above embodiments can be implemented in the baseband device 143, and the baseband device 143 includes a baseband processor.

[0276] The baseband device 143 may include, for example, at least one baseband board, and multiple chips are arranged on the baseband board. As Figure 14 shown, one of the chips is, for example, a baseband processor, which is connected to the memory 145 through a bus interface to call a program in the memory 145 to execute the network device operations shown in the above method embodiments.

[0277] The network-side device may further include a network interface 146, such as a Common Public Radio Interface (CPRI).

[0278] Specifically, the network-side device 1400 in the embodiments of the present application further includes: instructions or programs stored in the memory 145 and executable on the processor 144. The processor 144 calls the instructions or programs in the memory 145 to execute Figure 11 the methods executed by the modules shown, and achieve the same technical effects. To avoid repetition, they will not be elaborated here.

[0279] The embodiments of the present application further provide a readable storage medium, on which programs or instructions are stored. When the programs or instructions are executed by a processor, the various processes of the above-described embodiments of the diversity transmission method are implemented, and the same technical effects can be achieved. To avoid repetition, they will not be elaborated here.

[0280] Among them, the processor is the processor in the terminal described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory ROM, random access memory RAM, magnetic disks, or optical discs. In some examples, the readable storage medium may be a non-transitory readable storage medium.

[0281] 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 programs or instructions to implement the various processes of the above-described embodiments of the diversity transmission method, and the same technical effects can be achieved. To avoid repetition, they will not be elaborated here.

[0282] 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.

[0283] 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 the various processes of the above-described embodiments of the diversity transmission method, and the same technical effects can be achieved. To avoid repetition, they will not be elaborated here.

[0284] 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 diversity transmission method as described above, and the network-side device can be used to execute the steps of the diversity transmission method as described above.

[0285] 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 including a series of elements not only includes 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 phrase "including one..." does not exclude the presence of additional identical elements in the process, method, article or device including 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 a 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, the features described with reference to certain examples may be combined in other examples.

[0286] From the description of the above embodiments, those skilled in the art can clearly understand that the above-described example methods can be implemented by means of a computer software product plus a necessary general hardware platform, and of course, can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes several instructions for causing a terminal or a network-side device to execute the methods described in various embodiments of the present application.

[0287] The embodiments of the present application have been described above in conjunction with the accompanying drawings, but 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 determines configuration parameters of transmit diversity. Based on the configuration parameters of the transmit diversity, the terminal monitors control information sent by a network-side device.

2. The method according to claim 1, wherein: The configuration parameters of the transmit diversity include at least one of the following: Trigger information of transmit diversity; 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; The time-frequency resource mapping information of the control information corresponding to the beam combination.

3. The method according to claim 1 or 2, wherein: The configuration parameters of the transmit diversity are determined by at least one of the following: Predefined rules, first indication information; The first indication information is carried by at least one of the following: Master Information Block (MIB) message, System Information Block (SIB) message, Radio Resource Control (RRC), Medium Access Control Element (MAC CE) message.

4. The method according to any one of claims 1-3, characterized in that, The terminal determines the configuration parameters of transmit diversity, including: Based on the beam combination included in the configuration parameters of the transmit diversity and the mapping rule, the terminal determines the time-frequency resource mapping information of the control channel corresponding to the beam combination; The mapping rule includes at least one of the following: Each beam in the beam combination is mapped according to the offset information of the time-frequency resource corresponding to the control channel; The beam combination as a whole is mapped with the time-frequency resource corresponding to the control channel.

5. The method according to any one of claims 1-4, characterized in that The configuration parameters of the transmit diversity further include: a first search space for control information of single-beam or single-port transmission, and a second search space for control information of multi-beam or multi-port diversity transmission.

6. The method according to claim 4 or 5, characterized in that Based on the configuration parameters of the transmit diversity, the terminal monitors control information sent by a network-side device, including at least one of the following: When each beam in the beam combination is mapped according to the offset information of the time-frequency resource corresponding to the control information, based on the configuration parameters of the transmit diversity, the terminal monitors the control information sent by the network-side device in the second search space in a diversity transmission manner; When each beam in the beam combination is mapped according to the offset information of the time-frequency resource corresponding to the control information, based on the configuration parameters of each beam, the terminal monitors the control information sent by the network-side device in the first search space in a single-beam transmission manner; When each beam in the beam combination is mapped according to the offset information of the time-frequency resource corresponding to the control information and the time-frequency resources of the control information corresponding to the beam combination overlap, based on the configuration parameters of the transmit diversity, the terminal monitors the control information sent by the network-side device in the second search space in a diversity transmission manner; In the beam combination, each beam is mapped according to the offset information of the time-frequency resource corresponding to the control information, and when there is no overlap in the time-frequency resources of the control information corresponding to the beam combination, the terminal listens for the control information sent by the network-side device on the first search space in a single-beam or single-port transmission manner based on the configuration parameters of the transmit diversity.

7. The method according to claim 4 or 5, characterized in that When the beam combination as a whole is mapped to the time-frequency resource corresponding to the control information, the terminal listens for the control information sent by the network-side device based on the configuration parameters of the transmit diversity, including at least one of the following: The terminal listens for the control information sent by the network-side device on the second search space in a diversity transmission manner based on the configuration parameters of the transmit diversity; The terminal listens for the control information sent by the network-side device on the first search space in a single-beam or single-port transmission manner based on the configuration parameters of the transmit diversity.

8. The method according to any one of claims 1 to 7, characterized in that, The control information is carried by a Physical Downlink Control Channel (PDCCH), and the control information is used to schedule a Physical Downlink Shared Channel (PDSCH), where the PDSCH is a PDSCH for multi-beam diversity transmission or a PDSCH for single-beam transmission.

9. The method according to claim 8, wherein The transmission mode of the PDSCH is the same as that of the PDCCH.

10. The method according to claim 8, wherein The control information includes a second indication information, and the second indication information is used to indicate the beam information for transmitting the PDSCH.

11. The method according to claim 8, wherein The single beam used for single-beam transmission is one beam in the beam combination for diversity transmission.

12. The method according to claim 10, wherein The second indication information is represented by a bitmap, and the length of the bitmap is the same as the number of beams in the beam combination for transmit diversity; The bits of the bitmap correspond one by one to the ports corresponding to the beams in the beam combination for transmit diversity.

13. A diversity transmission method, characterized in that, Including: The network-side device sends the configuration parameters of the transmit diversity to the terminal; The configuration parameters of the transmit diversity are used to listen for the control information sent by the network-side device.

14. The method according to claim 13, wherein The configuration parameters of the transmit diversity include at least one of the following: The trigger information of the transmit diversity; 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; The time-frequency resource mapping information of the control information corresponding to the beam combination.

15. The method according to claim 13 or 14, wherein The configuration parameters of the transmit diversity are determined by at least one of the following: A predefined rule, a first indication information; The first indication information is carried 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 Element (MAC CE) message.

16. The method according to any one of claims 13-15, characterized in that, The configuration parameters of the transmit diversity further include: a first search space for control information of single-beam or single-port transmission, and a second search space for control information of multi-beam or multi-port diversity transmission.

17. The method according to any one of claims 13-16, characterized in that, The control information is carried by a physical downlink control channel (PDCCH), and the control information is used to schedule a physical downlink shared channel (PDSCH), where the PDSCH is a PDSCH for diversity transmission or a PDSCH for single-beam transmission.

18. The method according to claim 17, wherein The transmission mode of the PDSCH is the same as that of the PDCCH.

19. The method according to claim 17, wherein The control information includes a second indication information, and the second indication information is used to indicate the beam information for transmitting the PDSCH.

20. The method according to claim 17, wherein The single beam used for the single-beam transmission is one beam in the beam combination for diversity transmission.

21. The method according to claim 19, wherein The second indication information is represented by a bitmap, and the length of the bitmap is the same as the number of beams in the beam combination of the transmit diversity; The bits of the bitmap correspond one by one to the ports corresponding to the beams in the beam combination of the transmit diversity.

22. A diversity transmission device, characterized in that, It includes: A processing module, configured to determine the configuration parameters of the transmit diversity; The processing module is further configured to monitor the control information sent by the network-side device based on the configuration parameters of the transmit diversity.

23. A diversity transmission device, characterized in that, It includes: A sending module, configured to send the configuration parameters of the transmit diversity to the terminal; the configuration parameters of the transmit diversity are used to monitor the control information sent by the network-side device.

24. A terminal, characterized in that, It includes 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 12 are implemented.

25. A network-side device, characterized in that, It includes 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 13 to 21 are implemented.

26. A readable storage medium, characterized in that, The program or instruction is stored on the readable storage medium, and when the program or instruction is executed by the processor, the diversity transmission method according to any one of claims 1 to 12 is implemented, or the steps of the diversity transmission method according to any one of claims 13 to 21 are implemented.

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