Information transmission method, communication device and storage medium

Abstract

The invention provides an information transmission method, communication equipment and a storage medium. The information transmission method applied to a first communication node comprises the following steps: receiving a repeated transmission pattern generated by a second communication node; and receiving the repeated transmission of the first information sent by the second communication node based on the repeated transmission pattern.

Description

Technical Field

[0001] This application relates to the field of communication technologies, and in particular, to an information transmission method, a communication device, and a storage medium. Background Art

[0002] With the evolution of wireless communication technologies, more and more application scenarios will have the opportunity to be better supported. For example, non-terrestrial networks, which achieve coverage of ground users through satellites or drones. Therefore, wireless communication technologies need to provide better coverage performance. Thus, how to provide better coverage for user equipment is an urgent problem to be solved. Summary of the Invention

[0003] In view of this, embodiments of this application provide an information transmission method, a communication device, and a storage medium, which effectively provide better coverage performance for user equipment.

[0004] An embodiment of this application provides an information transmission method, which is applied to a first communication node and includes:

[0005] Receiving a repeated transmission pattern generated by a second communication node;

[0006] Receiving a repeated transmission of first information sent by the second communication node based on the repeated transmission pattern.

[0007] An embodiment of this application provides an information transmission method, which is applied to a second communication node and includes:

[0008] Generating a repeated transmission pattern;

[0009] Sending a repeated transmission of first information to a first communication node based on the repeated transmission pattern.

[0010] An embodiment of this application provides an information transmission device, which is applied to a first communication node and includes:

[0011] A receiving module, configured to receive a repeated transmission pattern generated by a second communication node;

[0012] The receiving module is further configured to receive a repeated transmission of first information sent by the second communication node based on the repeated transmission pattern.

[0013] An embodiment of this application provides an information transmission device, which is applied to a second communication node and includes:

[0014] A generating module, configured to generate a repeated transmission pattern;

[0015] A sending module, configured to send a repeated transmission of first information to a first communication node based on the repeated transmission pattern.

[0016] An embodiment of the present application provides a communication device, including: a memory, and one or more processors;

[0017] The memory is configured to store one or more programs;

[0018] When the one or more programs are executed by the one or more processors, the one or more processors implement the method described in any of the above embodiments.

[0019] An embodiment of the present application provides a storage medium, which stores a computer program, and when the computer program is executed by a processor, the method described in any of the above embodiments is implemented. Description of the Drawings

[0020] Figure 1 It is a schematic diagram of the implementation of a RACH process provided by the prior art;

[0021] Figure 2 It is a schematic diagram of the architecture of a communication system provided by an embodiment of the present application;

[0022] Figure 3 It is a flowchart of a method for information transmission provided by an embodiment of the present application;

[0023] Figure 4 It is a flowchart of another method for information transmission provided by an embodiment of the present application;

[0024] Figure 5 It is a schematic diagram of the implementation of the repeated transmission of downlink common information provided by an embodiment of the present application;

[0025] Figure 6 It is a schematic diagram of the relationship configuration between the beam direction and the space identified by the SSB provided by an embodiment of the present application;

[0026] Figure 7 It is a schematic diagram of the implementation of the time-domain repeated transmission at the SSB set level provided by an embodiment of the present application;

[0027] Figure 8 It is a schematic diagram of the implementation of the time-domain repeated transmission at the SSB set level and the first indication reference signal provided by an embodiment of the present application;

[0028] Figure 9 It is a schematic diagram of the implementation of the time-domain repeated transmission at the SSB level provided by an embodiment of the present application;

[0029] Figure 10 It is a schematic diagram of the implementation of the time-domain repeated transmission at the SSB level and the second indication reference signal provided by an embodiment of the present application;

[0030] Figure 11It is a schematic diagram for implementing time-domain repeated transmission at the symbol level provided by an embodiment of the present application;

[0031] Figure 12 It is a schematic diagram for implementing frequency-domain repeated transmission at the SSB level provided by an embodiment of the present application;

[0032] Figure 13 It is a schematic diagram for configuring the relationship between SSB and listening opportunity provided by an embodiment of the present application;

[0033] Figure 14 It is a structural block diagram of an information transmission device provided by an embodiment of the present application;

[0034] Figure 15 It is a structural block diagram of another information transmission device provided by an embodiment of the present application;

[0035] Figure 16 It is a structural schematic diagram of a communication device provided by an embodiment of the present application. Specific embodiments

[0036] Embodiments of the present application will be described below in conjunction with the accompanying drawings. The following describes the present application with reference to the accompanying drawings of the embodiments. The examples given are only used to explain the present application and are not used to limit the scope of the present application.

[0037] For the convenience of understanding the application solution, the cell search process and the random access procedure involved in this solution are described.

[0038] First, the cell search process:

[0039] The terminal receives a Synchronization Signal / PBCH Block (SSB, schematically including primary and secondary synchronization signals, physical broadcast channel, demodulation reference signal, etc.), and listens to the SIB1 PDCCH based on the configuration information carried on the physical broadcast channel, and receives the SIB1 PDSCH according to the scheduling of the SIB1 PDCCH, so as to obtain some basic cell parameters, scheduling and request information of other system information (such as, OSI), random access configuration information, etc. Based on this, the UE can further execute the random access procedure to access the cell; or, the UE can also stay in the Radio Resource Control (RRC) idle state to receive paging information (paging), other system information, etc. from the network side.

[0040] The above downlink signal channels are all transmitted in a multi-beam repeated transmission manner to achieve full coverage of the cell coverage area. Among them, the SSB is defined as a time-frequency resource block of 4 symbols * 240 resource elements (REs) in the 5G communication system. For different frequency band ranges, the maximum number of SSBs and the corresponding SSB time-domain transmission positions are predefined. For example, for paired spectrum operations (i.e., FDD systems) with a frequency less than or equal to 3 GHz, the maximum number of SSBs is 4. Correspondingly, 4 SSB transmission resources are defined and are sequentially corresponding to SSB index #0, SSB index #1, SSB index #2, and SSB index #4. When the user equipment (UE) detects a certain SSB, it obtains the SSB index information carried in the SSB, so as to uniquely determine the time-domain position information of the detected SSB (i.e., the radio frame, half-frame, time slot, symbol, etc.) where it is located.

[0041] Second, the random access procedure:

[0042] The current 5G cellular system supports a very wide spectrum range, that is, from several hundred MHz to several tens of GHz, which are all the operating frequency bands of the 5G system. Based on this, a new initial access basic scheme is defined. One of the key steps is the transmission of the physical random access channel (PRACH), which can also be called msg.1. This scheme includes different PRACH formats, PRACH resource configurations, the association relationship between SSB (synchronization signal / physical broadcast channel block) and PRACH transmission resources, PRACH retransmission mechanism, and PRACH power control mechanism, etc.

[0043] Figure 1 is a schematic diagram of the implementation of a RACH process provided by the prior art, as Figure 1As shown, an example of the RACH process is given. The UE will send a preamble (i.e., preamble) at the PRACH transmission occasion (RO) according to the configuration of the PRACH transmission and the SSB it selects. In this step, if the transmit-receive (Tx-Rx) reciprocity on the UE side can be guaranteed, there will be a fixed mapping between the receiving beam of the UE (which can also be called the Rx beam) and the transmitting beam of the UE (which can also be called the Tx beam). Then, the unique Tx beam can be determined according to its reception of the SSB. Specifically, the UE can try to receive the SSB from the gNB using different Rx beams and determine the best or appropriate Rx beam (e.g., having the highest Reference Signal Received Power (RSRP) or an RSRP value higher than a predefined threshold). Then, according to the best or suitable Rx beam, the corresponding Tx beam is determined. The RO for transmitting the PRACH will be determined according to the relationship between the SSB and the RO. Based on this relationship, the gNB can determine the SSB selected by the UE. Furthermore, the gNB can use the same beam as the one used to transmit this SSB to transmit subsequent DL transmissions, including msg.2 (which can also be called RAR, Random Access Response) and msg.4 (which is a PDSCH with the UE contention resolution identity). According to the current RACH process, the RAR should be sent in response to the reception of the PRACH transmission. More specifically, the UE should monitor the RAR PDCCH within the RAR window, which starts from the first symbol of the earliest control resource set (CORESET) that the UE is configured to receive the PDCCH for the Type1-PDCCH CSS set after the last symbol of the PRACH opportunity corresponding to the PRACH transmission. Additionally, if the Tx-Rx reciprocity on the UE side cannot be guaranteed, the UE needs to try different Tx beams to send the PRACH. Then, according to the current RACH process, the only way for the UE to find a suitable transmit beam is to try RACH retransmission with different beams after the previous RACH transmission fails.

[0044] For SIB1, Paging, OSI, msg2 or msg4 PDCCH and the corresponding PDSCH, the beam of the SSB is used for transmission. And there is a predefined association relationship between the monitoring occasion of the above PDCCH and the SSB, so that the UE can monitor the PDCCH at a specific occasion and avoid unnecessary detection overhead. In the following description, the signal channels carried by the SSB and the above PDCCH and PDSCH transmissions are collectively referred to as 'downlink common information'.

[0045] The solution described in this application relates to the coverage enhancement and capacity improvement of downlink common information.

[0046] With the evolution of wireless communication technology, more and more application scenarios will have the opportunity to be better supported. For example, in non-terrestrial networks, coverage of ground users is achieved through satellites or drones. Therefore, wireless communication technology needs to provide better coverage performance. In some coverage enhancement technologies, it usually comes at the cost of more transmission resources, which poses a risk of significant reduction in network capacity. On the other hand, the communication network will enter the era of Internet of Everything, which also means an exponential increase in the number of terminals and a greater demand for network capacity. How to balance providing better coverage for user equipment and greater network capacity is a problem that needs to be solved in future wireless communication.

[0047] Specifically, the prerequisite for a terminal to obtain communication network services is to first achieve time-frequency synchronization with the cell through the cell search process and obtain the basic information of the cell. Then, it accesses the network through the random access process. This application focuses on the transmission of the downlink signal channel in this process, also known as the downlink common signal channel, including at least one of the following: synchronization signal, physical broadcast channel (PBCH), system information block (SIB, System Information Block, which includes the PDSCH carrying the SIB and the PDCCH scheduling the SIB PDSCH), paging information (which includes the PDSCH carrying the paging and the PDCCH scheduling the paging PDSCH), random access response (RAR, Random Access Response, also known as msg2, which includes the PDSCH carrying msg2 and the PDCCH scheduling the msg2 PDSCH), contention resolution message (msg4, which includes the PDSCH carrying msg4 and the PDCCH scheduling the msg4 PDSCH), etc. That is, this application lies in how to balance the coverage and capacity requirements of the downlink common signal channel.

[0048] Figure 2 It is a schematic diagram of the architecture of a communication system provided by an embodiment of this application. As Figure 2 shown, the communication system 100 may include one or more network devices (i.e., base stations) and one or more terminal devices (which can also be referred to as UEs). As Figure 1 shown, the communication system 100 may include a base station 110, terminal devices 120, 130, 140, and a core network 150. It should be noted that the network device refers to the base station.

[0049] Among them, the base station 110 can provide communication services for the terminal device 120, the terminal device 130, and the terminal device 140, and the base station 110 can also communicate with the core network 150. For example, the base station 110 communicates with the terminal device 120 through a wireless network. When the terminal device 120 sends data, the wireless communication module can transmit the information.

[0050] When the transmission direction of the communication system 100 is an uplink transmission, the terminal device 120 is the sending end and the access network device 110 is the receiving end; when the transmission direction of the communication system 100 is a downlink transmission, the access network device 110 is the sending end and the terminal device 120 is the receiving end.

[0051] Mobile users can include: terminal devices, mobile devices, access terminals, user terminals, user stations, user units, mobile stations, remote stations, remote terminals, user agents, user devices, user equipment, or some other terms. Base stations can include access points (Access Point, AP), or can be called Node B (node B), Radio Network Controller (RadioNetwork Control ler, RNC), Evolved Node B (Evolved Node B, eNB), Base Station Controller (BaseStation Control ler, BSC), Base Transceiver Station (Base Transceiver Station, BTS), Base Station (BaseStation, BS), Transceiver Function (Transceiver Function, TF), wireless router, radio transceiver, basic service unit, extended service unit, Radio Base Station (Radio Base Station, RBS), or some other terms.

[0052] The base station can provide communication coverage for macro cells, pico cells, femto cells, and / or other types of cells. The macro cell can cover a relatively large geographical area (e.g., with a radius of several kilometers) and can allow unrestricted access for UEs with service subscriptions. The pico cell may cover a relatively small geographical area and may allow unrestricted access for UEs with service subscriptions. The femto cell can cover a relatively small geographical area (e.g., a home) and can allow restricted access for UEs associated with the femto cell (e.g., UEs in a Closed Subscriber Group (CSG)). The ABS of the macro cell can be referred to as the macro BS. The BS of the pico cell can be called the pico BS. The BS for the femto cell may be called the femto BS or the home BS. The terms "eNB", "base station", "NR BS", "gNB", "TRP", "AP", "Node B", "5G NB", "hNB", "6G NB", "iNB", "7G NB", and "cell" can be used interchangeably herein.

[0053] UEs can be scattered throughout the wireless network, and each UE can be fixed or mobile. A UE can communicate with one or more BSs in the wireless network.

[0054] The UE can also be referred to as an access terminal, terminal, mobile station, user unit, station, etc. The UE can be a cellular phone (e.g., a smart phone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet computer, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device or equipment, a biometric sensor / device, a wearable device (smart watch, smart clothing, smart glasses, smart wristband, smart jewelry (e.g., smart ring, smart bracelet)), an entertainment device (e.g., a music or video device or a satellite radio), a vehicle component or sensor, a smart meter / sensor, an industrial manufacturing device, a global positioning system device, or any other suitable device configured to communicate via wireless or wired media.

[0055] In one embodiment, Figure 3 is a flowchart of an information transmission method provided by an embodiment of the present application. This embodiment is applied to the situation of providing better coverage performance for user equipment. This embodiment can be executed by a first communication node. Exemplarily, the first communication node can be a UE; the second communication node can be a base station. As Figure 3 shown, this embodiment includes: S310 - S320.

[0056] S310, receiving a repeated transmission pattern generated by the second communication node.

[0057] In one example, repeated transmission is a way to effectively improve coverage performance. In one example, as the receiving end, the first communication node can obtain a receiving performance gain by combining multiple repeated transmissions received.

[0058] In one example, the repeated transmission pattern refers to the resource configuration in the time domain and / or frequency domain. That is, the repeated transmission pattern can include at least one of the following: time-domain repeated transmission pattern and frequency-domain repeated transmission pattern. In one example, the time-domain repeated transmission pattern includes one or more subframes or multiple symbols that repeat the same data at different time points; the frequency-domain repeated transmission pattern includes one or more subcarriers that repeat the same data on different frequency resources.

[0059] In one example, the second communication node can pre-configure the repeated transmission pattern and send the repeated transmission pattern to the first communication node.

[0060] S320. Repeated transmission of receiving the first information sent by the second communication node based on the repeated transmission pattern.

[0061] In one example, the first communication node can repeatedly receive the information sent by the second communication node based on the repeated transmission pattern. Further, the first communication node can repeatedly receive the first information sent by the second communication node based on the repeated transmission pattern. Exemplarily, the first information can be various signals or information included in the SSB.

[0062] In an embodiment, after receiving the repeated transmission pattern, the first communication node can repeatedly receive the first information sent by the second communication node on the time-domain resource and / or frequency-domain resource corresponding to the repeated transmission pattern, and combine the information of multiple repeated transmissions, so as to obtain a receiving performance gain and effectively improve the information coverage performance. In one embodiment, the repeated transmission pattern includes one of the following: time-domain repetition at the first information set level; time-domain repetition at the first information level; time-domain repetition at the symbol level; frequency-domain repetition at the first information level.

[0063] In one example, the time-domain repeated transmission pattern includes at least one of the following: time-domain repetition at the first information set level; time-domain repetition at the first information level; time-domain repetition at the symbol level. In one example, the frequency-domain repeated transmission pattern includes: frequency-domain repetition at the first information level.

[0064] In one example, the time-domain repetition at the first information set level can be understood as repeating transmission with the first information set as the granularity, that is, one or more first information sets are included in one transmission, and each first information set includes multiple first information.

[0065] In one example, the time-domain repetition of the first information level can be understood as repeating the transmission in the time domain with the first information as the granularity, that is, the first information with the same index occupies continuous transmission resources.

[0066] In one example, the time-domain repetition at the symbol level can be understood as repeating the transmission with multiple symbols within the first information as the granularity, that is, the multiple symbols within the first information carry the repeated transmission of different signals or information. Exemplarily, the symbol can be an Orthogonal Frequency Division Multiplexing (OFDM) symbol.

[0067] In one example, the frequency-domain repetition of the first information level can be understood as repeating the transmission in the frequency domain with the first information as the granularity, that is, the relative position relationship between two first information in the frequency domain is fixed, that is, there is a predefined or preconfigured frequency-domain offset.

[0068] In one embodiment, the repeated transmission pattern includes the time-domain repetition at the first information set level;

[0069] The first information set includes at least two first information; each first information set is repeatedly transmitted with a first period; multiple first information sets are repeatedly transmitted with a second period;

[0070] The first information with the same first information identifier within different first information sets satisfies the Quasi-Colocation (QCL) relationship;

[0071] The number of first information sets included within one second period is predetermined.

[0072] In one example, one second period can include multiple first periods, and each first period can include multiple time slots. In one example, the number of first information sets included within one second period can be configured or can also be predetermined.

[0073] In one example, QCL refers to a specific relationship existing between the antenna ports of different information or the channel state information reference signals, such that at the receiving end, the signal can be processed and estimated based on this relationship.

[0074] In one embodiment, the information transmission method applied to the first communication node further includes: receiving a first indication reference signal sent by the second communication node; wherein, the first indication reference signal is used to indicate the position of the first information set within the first second period or each first information within the first information set.

[0075] In one example, the indication reference signal may also be referred to as the Indication Reference Signal, and its abbreviation may be IRS. In one example, the first indication reference signal may also be referred to as the first IRS. In one example, in order for the second communication node to send the first indication reference signal to the first communication node, and use this first indication reference signal to indicate the position of the first information set in the first information collection within the second period or each first information within the first information collection.

[0076] In one embodiment, the first indication reference signal includes at least one of the following characteristics: the center frequency of the first indication reference signal is aligned with the center frequency of the first information; the offset frequency between the center frequency of the first indication reference signal and the center frequency of the first information is a fixed value; the number of first indication reference signals included in the first indication reference signal set composed of multiple first indication reference signals is the same as the number of first information included in the first information set; the number of symbols of the first indication reference signal is the same as the number of symbols of the first information; the time-domain frequency shift between each first indication reference signal included in the first indication reference signal set composed of multiple first indication reference signals and the first information corresponding to the index in the first information set in the first period of the second period is equal.

[0077] In one example, the center frequency of the first IRS may also be referred to as the frequency center of the first IRS. In one example, the center frequency of the first IRS is aligned with the center frequency of the first information, which can be understood as that the spectral centers of the first IRS and the first information are located at the same frequency position, that is, their positions on the frequency axis are relatively fixed.

[0078] In one example, the offset probability between the center frequency of the first IRS and the center frequency of the first information is a fixed value, which can also be understood as that there is a fixed frequency offset between the center frequency of the first IRS and the center frequency of the first information.

[0079] In one example, a first IRS set may be composed of multiple first IRSs, and the number of first IRSs included in the first IRS set is the same as the number of first information included in the first information set.

[0080] In one example, the time-domain frequency shift may include at least one of the following: the shift between start symbols, the shift between end symbols. In one example, a first IRS set may be composed of multiple first IRSs, and the time-domain frequency shift between each first IRS in the first IRS set and the first information with a corresponding index in the first information set in the second period is equal. For example, assume that the first IRS set contains three first IRSs and the first information set contains three pieces of first information; the time-domain frequency shift between the first first IRS in the first IRS set and the first piece of first information in the first first information set in the second period is equal; the time-domain frequency shift between the second first IRS in the first IRS set and the second piece of first information in the first first information set in the second period is equal; the time-domain frequency shift between the third first IRS in the first IRS set and the third piece of first information in the first first information set in the second period is equal.

[0081] In one embodiment, the time-domain frequency shift is equal to the first period; or, the time-domain frequency shift is predefined or preconfigured.

[0082] In one embodiment, the repeated transmission pattern includes time-domain repetition at the first information level;

[0083] The first information with the same identifier occupies continuous first information transmission resources. In one example, the same identifier may include: the same index, or the same ID. In one example, in the case where the repeated transmission pattern is time-domain repeated transmission at the first information level, the first information with the same identifier may occupy continuous first information transmission resources.

[0084] In one embodiment, the information transmission method applied to the first communication node further includes: receiving a second indication reference signal sent by the second communication node; wherein, the second indication reference signal is used to indicate the start position of each first information repeated transmission; wherein, a quasi-co-location relationship is satisfied between each second indication reference signal and the corresponding first information.

[0085] In one example, the second indication reference signal may also be referred to as a second IRS. In one example, for the second communication node to send the second indication reference signal to the first communication node and use the second indication reference signal to indicate the start position of each first information repeated transmission. In one example, a QCL relationship is satisfied between each second IRS and its corresponding first information, that is, the same beam is used for transmission.

[0086] In one embodiment, the second indication reference signal includes at least one of the following features: the center frequency of the second indication reference signal is aligned with the center frequency of the first information; the offset frequency between the center frequency of the second indication reference signal and the center frequency of the first information is a fixed value; the second indication reference signal and the first information of the first transmission in the repeated transmission are in the same time slot; the second indication reference signal is in the time slot before the first information of the first transmission in the repeated transmission.

[0087] In one example, the time-frequency domain relative position relationship between the second IRS and the first information in multiple repeated transmissions of the first information can be fixed. For example, the center frequency of the second IRS is aligned with the center frequency of the first information, or there is a predefined or preconfigured frequency domain offset; or, it satisfies a predefined or preconfigured time domain offset. For example, the second IRS and the first information of the first transmission in the repeated transmission are in the same time domain, or the second IRS is in the time slot before the first information of the first transmission.

[0088] In one embodiment, the information transmission method applied to the first communication node further includes: performing repeated transmission of the first information with the second communication node based on the coverage code information.

[0089] In one example, the above repeated transmission mechanism can be used to improve the coverage range of the downlink common information. Moreover, the repeated transmission mechanism can combine coverage code processing to achieve multiplexing of different information on the same time-frequency resources, which can improve the downlink capacity. In one example, the coverage code information may include an orthogonal covering code (OCC), or a non-orthogonal covering code. In one example, the first information may also be downlink common information.

[0090] In one embodiment, the coverage code information includes at least one of the following: the coverage code set corresponding to the first information; the number of coverage codes included in the coverage code set; the number of elements included in the coverage code, the coverage code used for the transmission of the first information. In one example, for the repeated transmission mechanism of the first information based on coverage code processing, the following metrics can be predefined or different values can be predefined based on the frequency band range:.

[0091] In one example, the set of covering codes can be determined according to the number of retransmission times, that is, different sets of covering codes are predefined corresponding to different numbers of retransmission times, and the number of covering codes included in different sets of covering codes, as well as the number of elements included in the covering codes, are also predefined. Exemplarily, assume that the number of retransmission times is 2, that is, the set of covering codes is {1, 1}, {1, -1}, and the number of covering codes included in the set of covering codes, as well as the number of elements included in the covering codes, are both 2. For another example, assume that the number of retransmission times is 4, that is, the set of covering codes is: {1, 1, 1, 1}, {1, -1, 1, -1}, {1, 1, -1, -1}, {1, -1, -1, 1}, and the number of covering codes included in the set of covering codes, as well as the number of elements included in the covering codes, are both 4.

[0092] In one embodiment, the transmission methods of multiple first pieces of information include one of the following: transmission through different antenna panels of the same transmit receive point (TRP); transmission through different transmit receive points; transmission through the same antenna panel of the same transmit receive point; transmission through the same transmit receive point, and a quasi co-location relationship is satisfied between multiple first pieces of information.

[0093] In one example, under the retransmission mechanism based on covering codes at the first communication node, multiple first pieces of information can be transmitted through different antenna panels of the same TRP, or multiple first pieces of information can be transmitted through different TRPs, or multiple first pieces of information can be transmitted through the same antenna panel of the same TRP. It can be understood that multiple first pieces of information are combined and transmitted at the second communication node acting as the transmitting end.

[0094] In one embodiment, the set of covering codes corresponding to the first piece of information corresponds to the number of retransmission times of the first piece of information.

[0095] In one embodiment, the number of elements included in the covering code is equal to the number of retransmission times of the first piece of information.

[0096] In one embodiment, the number of covering codes included in the set of covering codes is less than or equal to the number of retransmission times of the first piece of information. In one example, the number of covering codes included in the set of covering codes corresponding to the first piece of information is equal to the number of retransmission times of the first piece of information. For example, if the number of retransmission times of the first piece of information is 4, then the set of covering codes corresponding to the first piece of information can be {1, 1, 1, 1}, {1, -1, 1, -1}, {1, 1, -1, -1}, {1, -1, -1, 1}, and the number of covering codes included in the set of covering codes is also 4.

[0097] In one embodiment, the multiple first pieces of information do not satisfy the quasi-co-location relationship. In one example, in a repeated transmission mechanism based on coverage code processing, the multiple first pieces of information do not satisfy the quasi-co-location relationship, that is, the multiple first pieces of information can come from different beam directions.

[0098] In one embodiment, each first piece of information is transmitted within at least two first information transmission resources; the coverage codes used for different first pieces of information indicate partial bits of the first information identifier. In one example, the first information identifier may include: a first information index or a first information ID. Each first piece of information will be transmitted within multiple first information transmission resources, and the coverage codes used for different first pieces of information can be used as partial bits of the first information index.

[0099] In one embodiment, in the case where one of the first information transmission resources conflicts with the TDD frame structure configuration, all the first information associated with the first information transmission resource is not allowed to be transmitted. In one example, the TDD frame structure configuration conflict may be that the first information transmission resource overlaps with the uplink of the TDD frame structure. In one example, in the case where a certain first information transmission resource conflicts with the TDD frame structure configuration, all or part of the first information associated with the first information transmission resource is not allowed to be transmitted; or, the transmission resource conflicting with the TDD frame structure can be postponed to the nearest available resource, so that the first information associated with the first information transmission resource occupies two transmission resources in the form of a coverage code for transmission.

[0100] In one embodiment, in the case where the multiple first pieces of information do not satisfy the quasi-co-location relationship, all the signals within the first piece of information are processed using the same coverage code. In one example, in a repeated transmission mechanism based on coverage code processing, in the case where the multiple first pieces of information do not satisfy the quasi-co-location relationship, all the signals within the first piece of information are processed using the same coverage code. Among them, the fact that the multiple first pieces of information do not satisfy the quasi-co-location relationship means that the multiple first pieces of information come from different beam directions.

[0101] In one embodiment, the coverage code used for the first information transmission is determined according to at least partial bits within the identification information of the first communication node. In one example, when the first communication node is a UE, the identification information of the first communication node may be the identification information of the UE, such as 5G-S-TMSI. In one example, the first communication node can determine the coverage code used for the first information decoding and transmission according to partial bits of the identification information of the first communication node.

[0102] In one embodiment, when multiple first pieces of information come from the same transmit-receive node and satisfy the quasi-co-location relationship, some information within the first information is processed using a covering code. In one example, under a retransmission mechanism based on covering code processing, multiple first pieces of information come from the same beam direction of the same TRP. Some information within the first information is not processed using a covering code, and some information within the first information is processed using a covering code. Herein, the same beam direction means that the transmissions of the multiple first pieces of information satisfy the QCL relationship.

[0103] In one embodiment, the physical broadcast channel PBCH within the first information is processed using a covering code, and at least one of the following within the first information is not processed using a covering code: the primary synchronization signal, the secondary synchronization signal, and the demodulation reference signal; or,

[0104] The physical downlink control channel PDCCH or the physical downlink shared channel PDSCH within the first information is processed using a covering code, and the demodulation reference signal of the PDCCH or PDSCH is not processed using a covering code. For example, when the first information is an SSB, the message carried by the PBCH within the SSB is processed using a covering code, and at least one of the primary synchronization signal, the secondary synchronization signal, and the demodulation reference signal within the SSB is not processed using a covering code. In one example, when the first information is the PDCCH or the PDSCH, the PDCCH or the PDSCH is processed using a covering code, and the demodulation reference signal of the PDCCH or PDSCH is not processed using a covering code.

[0105] In one embodiment, the information transmission method applied to the first communication node further includes: receiving the monitoring occasion pattern information generated by the second communication node; and monitoring based on the monitoring occasion pattern information.

[0106] In the coverage and capacity enhancement mode, the monitoring occasion pattern for the retransmission of the first information also needs to be reconfigured. The second communication node can generate the monitoring occasion pattern information matching the coverage and capacity enhancement mode and send the monitoring occasion pattern information to the first communication node, so that the first communication node can monitor based on the monitoring occasion pattern information, which can effectively enable the retransmission scheme of the first information and, combined with the covering code processing, effectively improve its coverage performance and capacity utilization performance.

[0107] In one embodiment, multiple first pieces of information correspond to the same monitoring window; wherein, the monitoring window contains the same number of monitoring occasions as the retransmission times, and the monitoring occasions are used for PDCCH retransmission.

[0108] In one embodiment, N first pieces of information correspond to M consecutive listening opportunities; where M is an integer greater than 1 and N is a positive integer. In one example, in the coverage and capacity enhancement mode, N first pieces of information correspond to M consecutive listening opportunities, and the values of N and M can be the same, that is, each first piece of information corresponds to a consecutive listening opportunity; or, the number of first pieces of information is less than the number of consecutive listening opportunities, that is, N is less than M, that is, a part within the M listening opportunities is used for the repeated transmission of the first piece of information.

[0109] In one embodiment, the information transmission method applied to the first communication node further includes: reporting capability information to the second communication node; where the capability information is used to indicate at least one of the following processing capabilities of the first communication node: coverage code processing; repeated transmission.

[0110] In one example, the capability information is used to indicate whether the first communication node supports receiving the first piece of information in a repeated transmission mode based on coverage code processing. In one example, the capability information can have different definition methods and corresponding capability reporting mechanisms.

[0111] In one embodiment, the capability information satisfies one of the following conditions: all first communication nodes enable the coverage code processing and repeated transmission modes and use a predefined number of repetitions; define whether the first communication node enables the coverage code processing and repeated transmission modes and the number of repetitions based on the operating frequency; all first communication nodes simultaneously enable or disable the coverage code processing and / or repeated transmission modes; all first communication nodes support the coverage code processing and / or repeated transmission, and the coverage code processing and repeated transmission are independently enabled or disabled; enable or disable the coverage code processing and / or repeated transmission modes based on the capabilities of the first communication node; all first communication nodes simultaneously support the capabilities of the coverage code processing and / or repeated transmission.

[0112] In one example, both the coverage code processing and repeated transmission are defined as a mandatory capability of the first communication node, that is, a capability that all first communication nodes must support, and the repeated transmission is bound to the coverage code processing as a transmission mode (for example, the repeated transmission mode based on coverage code processing). The transmission mode is always enabled and uses a predefined number of repetitions, or defines whether to enable and the number of repetitions based on the operating frequency (for example, the frequency band or frequency range).

[0113] In one example, both the processing using the overlay code and the retransmission are defined as a mandatory capability of the first communication node, that is, a capability that all first communication nodes must support, and the retransmission is bound to the processing using the overlay code as a transmission mode (for example, the retransmission mode based on the processing using the overlay code), and is always enabled / disabled simultaneously. Whether to adopt this transmission mode (i.e., enable / disable), or the number of retransmissions can be configured by the second communication node.

[0114] In one example, both the processing using the overlay code and the retransmission are defined as a mandatory capability of the first communication node, that is, a capability that all first communication nodes must support, but the retransmission and the processing using the overlay code can be independently enabled / disabled.

[0115] In one example, both the processing using the overlay code and the retransmission are defined as an optional capability of the first communication node, and the retransmission is bound to the processing using the overlay code as a transmission mode (for example, the retransmission mode based on the processing using the overlay code), and the second communication node needs to enable / disable this transmission mode based on the capabilities of the first communication node.

[0116] In one example, both the processing using the overlay code and the retransmission are defined as an optional capability of the first communication node, that is, the network side needs to determine whether to support the capabilities of the first communication node based on the capability report of the terminal. The terminal needs to support or not support this capability simultaneously. For the first communication node that has reported this capability, the second communication node can determine whether to enable or disable the corresponding transmission mode for it.

[0117] In one example, the retransmission is defined as a mandatory capability of the first communication node, and the processing using the overlay code is defined as an optional capability of the first communication node; after the retransmission is enabled, the second communication node can (for example, according to the network load) determine whether to further enable the transmission mode using the overlay code for the terminal that supports the overlay code processing.

[0118] In one embodiment, the capability information is carried or indicated by at least one of the following: the PUSCH carrying message A; the packet indicating the capability information of different first communication nodes by using the PRACH transmission resource division; the first information distinguishing the capability information of different first communication nodes; the uplink reference signal indicating the capability information of different first communication nodes.

[0119] In one example, message A can also be referred to as msg A.

[0120] In one example, the capability information can be carried by the msgA PUSCH;

[0121] Alternatively, divide the PRACH transmission resources (including resources in the time domain, frequency domain, and preamble sequence dimension) into different groups, where different groups correspond to different UE capabilities.

[0122] Alternatively, rely on the first information to distinguish the capability information of different first communication nodes: different first information transmission frequency positions correspond to the transmission mechanisms adopted by the second communication node, that is, correspond to the capability information of different first communication nodes. The first communication node with the corresponding capability is allowed to access the network through the first information on this transmission frequency; different first information on the same transmission frequency point corresponds to different transmission mechanisms adopted by the second communication node. The transmission mode corresponding to a certain first information is indicated by the signal channel in the SSB, for example, indicated by the information carried in the PBCH. The first communication node with the corresponding capability is allowed to access the network through this SSB.

[0123] Alternatively, use the uplink reference signal (UL RS) to indicate the capability information of the first communication node: the transmission configuration information of the UL RS is indicated by the channel signal (such as PBCH) included in the SSB on the same carrier. The UL RS is used to indicate the capability of the first communication node. For example, different UL RS sequences correspond to the capabilities of different first communication nodes, or different UL RS transmission resources correspond to the capabilities of different first communication nodes. In some embodiments, the transmission configuration information of the UL RS can also be indicated by the information transmitted on other carriers.

[0124] In one embodiment, at least one of the following is used to indicate the covering code adopted for the first information transmission: indicating the covering code based on the Random Access-Radio Network Temporary Identifier (RA-RNTI); mapping the covering code based on the PRACH resource index; allocating the covering code based on the random access preamble sequence; allocating the covering code based on the time or frequency resource position of Message 1; determining the covering code based on user characteristics; indicating the covering code through the information carried by the PDCCH; indicating the covering code through the time domain resource position of the PDCCH; indicating the covering code through the time-frequency resource position of the PDSCH.

[0125] In one example, Message 1 can also become mag1.

[0126] In one embodiment, Figure 4 is a flowchart of another information transmission method provided by an embodiment of the present application. This embodiment is applied to the situation of providing better coverage performance for user equipment. This embodiment can be executed by the second communication node. As Figure 4 shown, this embodiment includes: S410 - S420.

[0127] S410. Generate a repeated transmission pattern.

[0128] S420. Based on the repeated transmission pattern, perform repeated transmission of the first information with the first communication node.

[0129] In one embodiment, the repeated transmission pattern includes one of the following: time-domain repetition at the first information set level; time-domain repetition at the first information level; time-domain repetition at the symbol level; frequency-domain repetition at the first information level.

[0130] In one embodiment, the repeated transmission pattern includes time-domain repetition at the first information set level;

[0131] The first information set includes at least two first information; each first information set is repeatedly transmitted at a first period; multiple first information sets are repeatedly transmitted at a second period;

[0132] The first information with the same first information identifier in different first information sets satisfies a quasi-co-location relationship;

[0133] The number of first information sets included in one second period is predetermined.

[0134] In one embodiment, the information transmission method applied to the second communication node further includes:

[0135] Send a first indication reference signal to the first communication node; wherein, the first indication reference signal is used to indicate the position of the first information set at the beginning of a second period or each first information in the first information set at the beginning.

[0136] In one embodiment, the first indication reference signal includes at least one of the following characteristics: the center frequency of the first indication reference signal is aligned with the center frequency of the first information; the offset frequency between the center frequency of the first indication reference signal and the center frequency of the first information is a fixed value; the number of first indication reference signals included in the first indication reference signal set composed of multiple first indication reference signals is the same as the number of first information included in the first information set; the number of symbols of the first indication reference signal is the same as the number of symbols of the first information; the time-frequency shift between each first indication reference signal included in the first indication reference signal set composed of multiple first indication reference signals and the first information with the corresponding index in the first information set at the beginning of the second period is equal.

[0137] In one embodiment, the time-frequency shift is equal to the first period; or, the time-frequency shift is predefined or preconfigured.

[0138] In one embodiment, the repeated transmission pattern includes time-domain repetition at the first information level; the first information with the same identifier occupies continuous first information transmission resources.

[0139] In one embodiment, the information transmission method applied to the second communication node further includes: sending a second indication reference signal to the second communication node; wherein, the second indication reference signal is used to indicate the starting position of the repeated transmission of each first piece of information; wherein, a quasi-co-location relationship is satisfied between each second indication reference signal and the corresponding first piece of information.

[0140] In one embodiment, the second indication reference signal includes at least one of the following characteristics: the center frequency of the second indication reference signal is aligned with the center frequency of the first piece of information; the offset frequency between the center frequency of the second indication reference signal and the center frequency of the first piece of information is a fixed value; the second indication reference signal and the first first piece of information in the repeated transmission are in the same time slot; the second indication reference signal is in the time slot before the first first piece of information in the repeated transmission.

[0141] In one embodiment, the information transmission method applied to the second communication node further includes: performing repeated transmission of the first piece of information with the first communication node based on the coverage code information.

[0142] In one embodiment, the coverage code information includes at least one of the following: the set of coverage codes corresponding to the first piece of information; the number of coverage codes included in the coverage code set; the number of elements included in the coverage code, the coverage code used for the transmission of the first piece of information.

[0143] In one embodiment, the transmission modes of multiple first pieces of information include one of the following: transmission through different antenna panels of the same sending and receiving node; transmission through different sending and receiving nodes; transmission through the same antenna panel of the same sending and receiving node; transmission through the same sending and receiving node, and a quasi-co-location relationship is satisfied between multiple said first pieces of information.

[0144] In one embodiment, the set of coverage codes corresponding to the first piece of information corresponds to the number of repeated transmissions of the first piece of information.

[0145] In one embodiment, the number of elements included in the coverage code is equal to the number of repeated transmissions of the first piece of information.

[0146] In one embodiment, the number of coverage codes included in the coverage code set is less than or equal to the number of repeated transmissions of the first piece of information.

[0147] In one embodiment, a quasi-co-location relationship is not satisfied between multiple first pieces of information.

[0148] In one embodiment, each first piece of information is sent within at least two first information transmission resources; the coverage codes used for different first pieces of information indicate partial bits of the first information identifier.

[0149] In one embodiment, when one of the first information transmission resources conflicts with the TDD frame structure configuration, all the first information associated with the first information transmission resource is not allowed to be transmitted.

[0150] In one embodiment, when the quasi-co-location relationship is not satisfied among multiple first information, all the signals in the first information are processed using the same coverage code.

[0151] In one embodiment, the coverage code used for the first information transmission is determined according to at least some of the bit positions in the identification information of the first communication node.

[0152] In one embodiment, when multiple first information comes from the same transmit-receive node and satisfies the quasi-co-location relationship, some of the information in the first information is processed using the coverage code.

[0153] In one embodiment, the physical broadcast channel PBCH in the first information is processed using the coverage code, and at least one of the following in the first information is not processed using the coverage code: the primary synchronization signal, the secondary synchronization signal, and the demodulation reference signal; or,

[0154] The physical downlink control channel PDCCH or the physical downlink shared channel PDSCH in the first information is processed using the coverage code, and the demodulation reference signal of the PDCCH or PDSCH is not processed using the coverage code.

[0155] In one embodiment, the information transmission method applied to the second communication node further includes:

[0156] Generating monitoring occasion pattern information;

[0157] Sending the monitoring occasion pattern information to the first communication node.

[0158] In one embodiment, multiple first information corresponds to the same monitoring window;

[0159] Wherein, the monitoring window contains the same number of monitoring occasions as the number of retransmission times, and the monitoring occasions are used for PDCCH retransmission.

[0160] In one embodiment, N first information corresponds to M consecutive monitoring occasions; wherein, M is an integer greater than 1, and N is a positive integer.

[0161] In one embodiment, the information transmission method applied to the second communication node further includes:

[0162] Receiving the capability information reported by the first communication node; wherein, the capability information is used to indicate at least one of the following processing capabilities of the first communication node: coverage code processing; retransmission.

[0163] In one embodiment, the capability information satisfies one of the following conditions: all first communication nodes enable the mode of coverage code processing and retransmission, and adopt a predefined number of repetitions; whether to enable the mode of coverage code processing and retransmission, and the number of repetitions are defined based on the operating frequency; all first communication nodes simultaneously enable or disable the mode of coverage code processing and / or retransmission; all first communication nodes support coverage code processing and / or retransmission, and the coverage code processing and retransmission are independently enabled or disabled; the mode of coverage code processing and / or retransmission is enabled or disabled based on the capabilities of the first communication nodes; all first communication nodes simultaneously support the capabilities of coverage code processing and / or retransmission.

[0164] In one embodiment, the capability information is carried or indicated by at least one of the following: the physical uplink shared channel PUSCH carrying message A; using the physical random access channel PRACH transmission resource division packet to indicate the capability information of different first communication nodes; using the first information to distinguish the capability information of different first communication nodes; using the uplink reference signal to indicate the capability information of different first communication nodes.

[0165] In one embodiment, at least one of the following is used to indicate the coverage code used for the first information transmission: indicating the coverage code based on the RA-RNTI; mapping the coverage code based on the PRACH resource index; allocating the coverage code based on the random access preamble sequence; allocating the coverage code based on the time or frequency resource location of message 1; determining the coverage code based on user characteristics; indicating the coverage code through the information carried by the PDCCH; indicating the coverage code through the time domain resource location of the PDCCH; indicating the coverage code through the time-frequency resource location of the PDSCH.

[0166] It should be noted that for the explanations of parameters such as the retransmission pattern, the first information, the first indication reference signal, and the second indication reference signal in the information transmission method applied to the second communication node, reference can be made to the descriptions of the corresponding parameters in the information transmission method applied to the first communication node above, and details are not elaborated here.

[0167] In the following specific embodiment, taking the first communication node as the UE (which can also be called the terminal) and the second communication node as the base station (which can also be called the network side), and taking the first information as the SSB or the downlink common information as an example, the process of retransmission and the process of retransmission combined with the coverage code are described.

[0168] In one specific embodiment, this embodiment describes a method for improving the coverage and capacity of downlink common information. Specifically, a retransmission mechanism is used to improve the coverage range of the downlink common information, and the retransmission combines the coverage code (orthogonal coverage code or non-orthogonal coverage code) processing to achieve the multiplexing of different information on the same time-frequency resource, thereby improving the downlink capacity.

[0169] In some embodiments, Figure 5 is a schematic diagram for implementing the repeated transmission of downlink common information provided by an embodiment of the present application. The repeated transmission of downlink common information combines the processing of a covering code (taking the orthogonal covering code OCC as an example, the covering code can also be a non-orthogonal or partially orthogonal covering code, etc., and can also be called a repeated transmission mode based on covering code processing) to implement a method for multiplexing different information pairs on the same time-frequency resource. Specifically, it includes: the downlink common information is repeatedly transmitted a certain number of times. As Figure 5 shown, the downlink common information includes a first piece of information S1 and a second piece of information S2, and two transmission resources are used for the transmission of the downlink common information. An OCC code set is defined, which contains two OCC codes: [1, 1], [1, -1]. The first piece of information S1 is processed using the OCC code [1, 1], that is, each element in the OCC code is multiplied by the first piece of information S1 to obtain transmission versions of the first piece of information equal to the number of elements in the OCC code, that is, S1, S1, and they are respectively transmitted in different transmission resources. The second piece of information S2 is processed using the OCC code [1, -1], that is, each element in the OCC code is multiplied by the second piece of information S2 to obtain transmission versions of the second piece of information equal to the number of elements in the OCC code, that is, S2, -S2, and they are respectively transmitted in different transmission resources. The terminal can decode the first piece of information and the second piece of information through different OCC codes [1, 1], [1, -1]. Specifically, when performing OCC decoding using [1, 1], the received signal (ignoring the influence of noise and the channel on the signal here): S1 + S2 + S1 - S2 = 2 * S1; when performing OCC decoding using [1, -1], the received signal (ignoring the influence of noise and the channel on the signal here): S1 + S2 + (-(S1 - S2)) = 2 * S2. In some embodiments, for the repeated transmission mechanism of SSB based on covering code processing, at least one of the following is predefined, or different values are predefined based on the frequency band range (the definition granularity can be Frequency range or frequency band): the covering code set corresponding to SSB, the number of repetitions, the number of covering codes included in the covering code set, the number of elements included in the covering code, the covering code used for SSB transmission.

[0170] In some embodiments, under the repeated transmission mechanism based on coverage code processing, multiple pieces of the downlink common information may be transmitted through different antenna panels of the same transmission and reception point (TRP), or multiple pieces of the downlink common information may be transmitted through different TRPs, or multiple pieces of the downlink common information may be transmitted through the same antenna panel of the same TRP. At this time, multiple pieces of the downlink common information will be combined at the transmitting end for transmission. For example, the combined information S1+S2 and S1-S2 are transmitted on two transmission resources respectively. In some embodiments, the number of elements included in the coverage code is equal to the number of repeated transmissions of the downlink common information. The number of coverage codes included in the coverage code set is less than or equal to the number of repeated transmissions of the downlink common information.

[0171] In some embodiments, Figure 6 is a schematic diagram of the relationship configuration between the beam direction and the space identified by the SSB provided by an embodiment of the present application. Under the repeated transmission mechanism based on coverage code processing, multiple pieces of the downlink common information come from different beam directions. Among them, the beam direction may be a space for transmitting information identified by a reference signal (such as SSB or CSI-RS). As Figure 6 shown, taking the downlink common information as SSB as an example, 4 SSB transmission resources are defined in the first two downlink time slots. To achieve coverage enhancement, all SSBs are repeatedly transmitted twice, and at the same time, combined with OCC, different SSBs can reuse the same transmission resources; specifically, on transmission resource 1, the base station transmits SSB0 and SSB1, and on transmission resource 2, the base station transmits SSB0 and -SSB1; furthermore, the terminal decodes OCC for the information received on the two transmission resources according to the OCC code [1,1], and can obtain SSB0+SSB1+SSB0-SSB1 = 2*SSB0. Similarly, the terminal decodes OCC for the information received on the two transmission resources according to the OCC code [1,-1], and can obtain SSB0+SSB1-SSB0+SSB1 = 2*SSB1. The reception results of the two SSBs can be obtained through the above process. A similar process can be applied to the transmission of SSB2 and SSB3.

[0172] In some embodiments, each SSB will be transmitted within multiple SSB transmission resources, and the covering codes adopted by different SSBs can be part of the bits of the SSB index. For example, in the above example, 4 SSBs require 2 bits to indicate the SSB index, and two OCC codes can be used to indicate the lowest 1 bit of the SSB index. Specifically, [1,1] corresponds to the lowest significant bit of the SSB index being 0, and [1, -1] corresponds to the lowest significant bit of the SSB index being 1. In some embodiments, the OCC code can also be used to indicate the highest or several middle significant bits of the SSB index.

[0173] In some embodiments, when a certain SSB transmission resource conflicts with the TDD frame structure configuration (i.e., the SSB transmission resource overlaps with the uplink of the TDD frame structure), the SSBs associated with this SSB transmission resource are not allowed to be transmitted. In Figure 3 In the example shown, assuming that at least some symbols in transmission resource 4 are configured as uplink, then the associated SSB2 and SSB3 cannot be transmitted. Therefore, there is no SSB transmission on transmission resource 3 either. In some embodiments, it is allowed to transmit one of SSB2 and SSB3 on transmission resource 3. In some embodiments, the transmission resource conflicting with the frame structure will be postponed to the nearest available resource (e.g., the downlink resource with the nearest specific symbol index later), so as to allow SSB2 and SSB3 to occupy two transmission resources in the OCC manner for transmission.

[0174] In some embodiments, under the repeated transmission mechanism based on covering code processing, when multiple pieces of the downlink common information come from different beam directions, all signal channels within the downlink common information are processed using the same OCC code. Specifically, when the downlink common information is an SSB, all signal channels within the SSB are processed using the same OCC code, which includes synchronization signals, physical broadcast channels, and corresponding demodulation reference signals. When the downlink common information is a PDCCH or a PDSCH, the PDCCH or PDSCH and the corresponding demodulation reference signal are both processed using the same OCC.

[0175] In some embodiments, the UE can determine the covering code used during its decoding based on some bits of the UE identification information (such as 5G - S - TMSI). The said bits can be the lowest N significant bits, or the middle N significant bits of the UE identification information.

[0176] In some embodiments, under the repeated transmission mechanism based on coverage code processing, multiple pieces of the downlink common information come from the same beam direction of the same transmission and reception point (TRP). Among them, the beam direction may be the spatial transmission information identified by a reference signal (such as SSB or CSI-RS). In some embodiments, part of the information in the downlink common information is not processed using the coverage code. Specifically, when the downlink common information is SSB, the PBCH in the SSB is processed using the coverage code, and at least one of the following in the SSB is not processed using the coverage code: primary synchronization signal, secondary synchronization signal, demodulation reference signal. When the downlink common information is PDCCH or PDSCH, the PDCCH or PDSCH is processed using the coverage code, and the demodulation reference signal of the PDCCH or PDSCH is not processed using the coverage code.

[0177] Exemplarily, a specific example is given below taking the PDCCH transmission of a random access response (RAR) as an example:

[0178] Two user equipments (UE1 and UE2) need to receive the PDCCH scheduling information of the base station. To improve resource utilization, the base station multiplexes the PDCCH signals of the two UEs through the same CCE (Control Channel Element) time-frequency resource. To distinguish the signals of the two UEs, the base station assigns different OCC codes to the two users and introduces DMRS in the PDCCH signal. Furthermore, the base station realizes the multiplexing of the PDCCH signals of the two UEs through the OCC code, so that UE1 and UE2 can correctly decode their respective PDCCH signals.

[0179] Two orthogonal OCC codes are predefined in the system: OCC code of UE1: [1, 1], indicating that the weights of both transmissions are 1; OCC code of UE2: [1, -1], indicating that the weights of the two transmissions are 1 and -1 respectively.

[0180] The processing and transmission process on the base station side includes the following three steps:

[0181] Step 1: The base station generates a PDCCH signal and a DMRS signal;

[0182] The base station generates independent PDCCH signals for the two UEs respectively: PDCCH signal of UE1: S1, including the RA-RNTI of UE1 and scheduling information; PDCCH signal of UE2: S2, including the RA-RNTI of UE2 and scheduling information.

[0183] The base station generates independent DMRS sequences for each UE for channel estimation and demodulation: DMRS signal for UE1: DMRS1; DMRS signal for UE2: DMRS2.

[0184] Step 2: The base station processes the generated signals using OCC codes;

[0185] The base station superimposes OCC codes on two repeated transmissions of PDCCH and simultaneously transmits the corresponding DMRS signals:

[0186] First transmission: PDCCH signal: Tx1 = S1×1 + S2×1 = S1 + S2; DMRS signal: DMRS1 + DMRS2;

[0187] Second transmission: PDCCH signal: Tx2 = S1×1 + S2×(-1) = S1 - S2; DMRS signal: DMRS1 - DMRS2;

[0188] Step 3: The base station transmits the signals;

[0189] The base station transmits the signals of two repeated transmissions through the same CCE resource: First transmission: Tx1 = S1 + S2, and simultaneously transmits DMRS1 + DMRS2. Generally, the PDCCH signal and the demodulation reference signal are mapped to different resource units. Therefore, S1 + S2 is transmitted on the resource where the PDCCH signal is mapped, and DMRS1 + DMRS2 is transmitted on the resource where the demodulation reference signal is mapped. (Alternatively, S1 + DMRS1 and S2 + DMRS2 can be transmitted using different antenna panels respectively); Second transmission: Tx2 = S1 - S2, and simultaneously transmits DMRS1 - DMRS2 (alternatively, S1 + DMRS1 and -S2 - DMRS2 can be transmitted using different antenna panels respectively).

[0190] The receiving and processing process of the UE includes the following three steps:

[0191] Step 1: The terminal receives the signals;

[0192] Received PDCCH signal: The information received on the resource where the PDCCH signal is mapped in the first transmission is: Rx1 = H×(S1 + S2) + N1; The information received on the resource where the PDCCH signal is mapped in the second transmission is: Rx2 = H×(S1 - S2) + N2; where: H is the data channel gain of the PDCCH; N1 and N2 are noises.

[0193] Received DMRS signals: The information received on the resources where DMRS is mapped in the first transmission is: Rx1 = H_DMRS × (DMRS1 + DMRS2) + N1; The information received on the resources where DMRS is mapped in the second transmission is: Rx2 = H_DMRS × (DMRS1 - DMRS2) + N2; where: H_DMRS is the DMRS channel gain; N1 and N2 are noises.

[0194] Step 2: The UE decodes the PDCCH signal according to the OCC code;

[0195] Decoding process of UE1: UE1 decodes the signal using the OCC code [1, 1] (the weights of both transmissions are 1): Decoding formula: Signal_UE1 = Rx1 × 1 + Rx2 × 1;

[0196] Decoding result:

[0197] Signal_UE1 = (H × (S1 + S2) + H_DMRS × (DMRS1 + DMRS2) + N1) × 1 + (H × (S1 - S2) + H_DMRS × (DMRS1 - DMRS2) + N2) × 1

[0198] = H × S1 + H × S2 + H × S1 - H × S2 + (H_DMRS × DMRS1 + H_DMRS × DMRS2) + (H_DMRS × DMRS1 - H_DMRS × DMRS2) + N1 + N2

[0199] = 2 × H × S1 + 2 × H_DMRS × DMRS1 + (N1 + N2);

[0200] UE1 performs channel estimation according to its own DMRS1 sequence;

[0201] UE1 extracts its own signal S1.

[0202] Decoding process of UE2:

[0203] UE2 decodes the signal using the OCC code [1, -1] (the weights of the two transmissions are 1 and -1 respectively): Decoding formula: Signal_UE2 = Rx1 × 1 + Rx2 × (-1);

[0204] Decoding result:

[0205] Signal_UE2 = (H × (S1 + S2) + H_DMRS × (DMRS1 + DMRS2) + N1) × 1 + (H × (S1 - S2) + H_DMRS × (DMRS1 - DMRS2) + N2) × (-1)

[0206] = H×S1 + H×S2 - H×S1 + H×S2 + (H_DMRS×DMRS1 + H_DMRS×DMRS2) - (H_DMRS×DMRS1 - H_DMRS×DMRS2) + N1 - N2

[0207] = 2×H×S2 + 2×H_DMRS×DMRS2 + (N1 - N2);

[0208] UE2 performs channel estimation according to its own DMRS2 sequence;

[0209] UE2 extracts its own signal S2.

[0210] This embodiment describes a method for improving the coverage and capacity of downlink common information. Specifically, a repeated transmission mechanism is used to improve the coverage range of downlink common information, and the repeated transmission combines orthogonal cover codes (OCC) to achieve multiplexing of different information on the same time-frequency resources, thereby improving the downlink capacity. This method not only improves the resource utilization efficiency but also enhances the channel demodulation performance, and is applicable to high-density multi-user scenarios.

[0211] In a specific embodiment, this embodiment describes a method for improving the coverage of downlink common information, specifically related to the definition of the time-frequency domain transmission pattern of SSB repeated transmission.

[0212] Repeated transmission is a way to effectively improve coverage. The receiving end obtains a receiving performance gain by combining multiple repeated transmissions. In some embodiments, there are multiple possible repeated transmission modes for SSB.

[0213] Mode 1: Time-domain repeated transmission at the SSB set level;

[0214] Figure 7 is a schematic diagram of the implementation of time-domain repeated transmission at the SSB set level provided by the embodiment of the present application. In this example, the first period is SSB period 1 (which can also be called SSB period #1), and the second period is SSB period 2 (which can also be called SSB period #2). As Figure 7As shown, the SSB set contains multiple SSBs (for example, it contains 4 SSBs, and the indexes are SSBindex#0, SSB index#1, SSB index#2, SSB index#3 in sequence), and the SSB set is repetitively transmitted with an SSB period 1 (SSBperiod#1); correspondingly, there is a quasi co-location (QCL) relationship between the SSBs with the same SSB index in different SSB sets, that is, they are transmitted using the same beam direction. Multiple SSB sets are repetitively transmitted with SSB period#2 as the period, where the number of SSB sets included within one SSB period#2 is configurable.

[0215] Figure 8 It is a schematic diagram of the implementation of time-domain repetitive transmission and the first indication reference signal at the SSB set level provided by an embodiment of the present application. In this example, the first period is the SSB period 1 (which can also be referred to as SSB period#1), and the second period is the SSB period 2 (which can also be referred to as SSB period#2). In some embodiments, in order to indicate the position of the first SSB set within SSB period#2 or each SSB within the first SSB set to the terminal, a first indication reference signal (IRS, indication reference signal) is defined; the first IRS has at least one of the following characteristics: the frequency center of the first IRS is aligned with the frequency center of the SSB, or has a fixed frequency offset; the multiple first IRSs form a first indication reference signal set, and the number of first IRSs included in the first IRS set is the same as the number of SSBs in the SSB set; the number of symbols of the first IRS is the same as the number of symbols of the SSB; the time-domain offset between each first IRS in the first IRS set and the SSB with an index in the first SSB set within SSB period#2 is equal. For example, "the time-domain offset between the first first IRS (i.e., IRS index#0) in the first IRS set and SSB index#0 in the first SSB set within SSB period#2 (which can be the offset between the start symbols or the offset between the end symbols)" is equal to "the time-domain offset between IRS index#1 and SSB index#1". Similarly, it is equal to "the time-domain offset between IRSindex#2 and SSB index#2" and "the time-domain offset between IRS index#3 and SSB index#3". In some embodiments, the offset is equal to SSB period#1. In some embodiments, the offset is predefined or preconfigured.

[0216] Mode 2: Time-domain repeated transmission at the SSB level

[0217] Figure 9 is a schematic diagram of the implementation of time-domain repeated transmission at the SSB level provided by an embodiment of the present application. As Figure 9 shown, SSBs with the same index will occupy consecutive SSB transmission resources. Figure 9 If the number of repetitions is 2, then the two repetitions will occupy two SSB transmission resources within the same time slot. In some embodiments, the information within the SSB will also include an SSB sub-index to distinguish the first and the second of the two SSBs that are repeatedly transmitted within the same time slot.

[0218] Figure 10 is a schematic diagram of the implementation of time-domain repeated transmission at the SSB level and a second indication reference signal provided by an embodiment of the present application. In some embodiments, in order to indicate to the terminal the starting position of each SSB repeated transmission, a corresponding second indication reference signal (IRS, indication reference signal) is defined for each SSB; there is a quasi-co-location (QCL) relationship between each second IRS and the SSB corresponding to it, that is, the same beam is used for transmission; in some embodiments, the time-frequency domain relative position relationship between the second IRS and the first SSB among the multiple repeated transmission SSBs is fixed. For example, it satisfies a predefined or preconfigured time-domain offset, their frequency domain centers are aligned, or there is a predefined or preconfigured frequency domain offset. In some embodiments, the two may be within the same time slot, or the second IRS is in the time slot before the first SSB.

[0219] Mode 3: Time-domain repeated transmission at the symbol level

[0220] Figure 11 is a schematic diagram of the implementation of time-domain repeated transmission at the symbol level provided by an embodiment of the present application. As Figure 11 shown, it is based on the SSB structure in a 5G wireless communication system to illustrate the basic idea of time-domain repeated transmission at the symbol level. The SSB structure can also be defined as other structures, and the idea of introducing symbol-level repetition is the same. Specifically, if the defined number of repeated transmissions is 2, then the first, third, fifth, and seventh symbols within the SSB carry the initial transmissions of different signal channels, and the second, fourth, sixth, and eighth symbols are respectively repetitions of the previous symbol. Similarly, an SSB structure with other numbers of repeated transmissions can be defined. For example, if the number of repetitions is 3, then the first, fourth, seventh, and tenth symbols within the SSB carry the initial transmissions of different signal channels, the second, fifth, eighth, and eleventh symbols are respectively the first repetitions of the initial transmissions, and the third, sixth, ninth, and twelfth symbols are respectively the second repetitions of the initial transmissions.

[0221] Mode 4: Frequency-domain repeated transmission

[0222] Figure 12 FIG. is a schematic diagram of the implementation of frequency-domain repeated transmission at the SSB level provided by an embodiment of the present application. As Figure 12 shown, the SSB can perform repeated transmission in the frequency domain. The relative positional relationship between two SSBs in the frequency domain is fixed, that is, there is a predefined or preconfigured frequency-domain offset.

[0223] This embodiment describes a method for improving the coverage of downlink common information, specifically related to the definition of time-frequency transmission patterns for SSB repeated transmission. This method can effectively enable the repeated transmission scheme of downlink common information, thereby improving its coverage performance.

[0224] In a specific embodiment, this embodiment describes a method for improving the coverage and capacity of downlink common information, specifically related to the definition of the monitoring opportunity pattern for physical downlink control channel repeated transmission in the coverage and capacity improvement mode.

[0225] In some embodiments, the coverage and capacity improvement mode refers to a transmission mode that uses repeated transmission combined with coverage code processing to multiplex different information on the same time-frequency resource, improving the coverage and capacity of downlink common information. It can also be called a repeated transmission mode based on coverage code processing, or a repeated transmission mode based on coverage code processing.

[0226] In the prior art, for the monitoring of SIB1 PDCCH, each SSB index corresponds to a monitoring window (for example, including two time slots, and each time slot contains a monitoring opportunity). When the terminal selects a certain SSB, it can attempt to blindly detect SIB1 PDCCH at the two monitoring opportunities within the corresponding monitoring window. Figure 13 FIG. is a schematic diagram of the relationship configuration between an SSB and a monitoring opportunity provided by an embodiment of the present application. In the coverage and capacity improvement mode, multiple SSBs can correspond to the same monitoring window. As Figure 13 shown, for the transmission of SIB1 PDCCH with a repetition count of 2, two SSBs correspond to the same monitoring window. In some embodiments, the monitoring window contains the same number of monitoring opportunities as the repetition count, and the monitoring opportunities are used for PDCCH repeated transmission; in other embodiments, the number of monitoring opportunities contained in the monitoring window is more than the number of repeated transmissions, and some of the monitoring opportunities are used for the repeated transmission of the PDCCH.

[0227] In the prior art, for the OSIPDCCH or paging PDCCH, the actually transmitted SSBs (determined by signaling which SSBs are actually transmitted) are sorted in ascending order of index and are associated with the MOs arranged in chronological order one by one. In the coverage and capacity enhancement mode, N SSBs can correspond to M consecutive monitoring opportunities. In some embodiments, N = M. Specifically, for the PDCCH transmission with a repetition number of 2, two SSBs correspond to two consecutive monitoring opportunities, and the monitoring opportunities are used for PDCCH repeated transmission; in some other embodiments, N < M, and a part of the M monitoring opportunities is used for the repeated transmission of the PDCCH.

[0228] This embodiment describes a method for enhancing the coverage and capacity of downlink common information, specifically related to the definition of the monitoring opportunity pattern for the repeated transmission of the physical downlink control channel in the coverage and capacity enhancement mode. This method can effectively enable the repeated transmission scheme of downlink common information, and then combine the coverage code processing to enhance its coverage and capacity.

[0229] In a specific embodiment, this embodiment describes a method for enhancing the coverage and capacity of downlink common information, specifically related to the terminal capability reporting mechanism.

[0230] In some embodiments, whether to support receiving downlink common information in a repeated transmission mode based on coverage code processing is a terminal capability. This terminal capability has different definition methods and corresponding capability reporting mechanisms.

[0231] In some embodiments, both the use of coverage code processing and repeated transmission are defined as mandatory UE capabilities, that is, capabilities that all terminals must support, and the repeated transmission is bound to the use of coverage code processing as a transmission mode (for example, the repeated transmission mode based on coverage code processing). The transmission mode is always enabled and uses a predefined repetition number, or determines whether to enable and the repetition number based on the operating frequency (for example, the frequency band or frequency range). In some embodiments, the above capability definition and enabling indication method are applicable to at least one of the following transmissions: SSB, synchronization signal, physical broadcast channel, system information PDCCH and PDSCH, paging information PDCCH and PDSCH, etc.

[0232] In some embodiments, both the processing using the coverage code and the retransmission are defined as mandatory UE capabilities, that is, capabilities that all terminals must support, and the retransmission is bound to the processing using the coverage code as a transmission mode (for example, the retransmission mode based on the processing using the coverage code), and they are always enabled / disabled simultaneously. Whether to adopt this transmission mode (i.e., enable / disable), or the number of retransmissions can be configured by the base station; the configuration signaling can be carried by at least one of the following methods: the information in the PBCH, the processing method of the PBCH (such as the scrambling sequence of the information, the scrambling sequence of the cyclic check sequence, etc.), the DMRS sequence of the PBCH, the information in the system information PDCCH, the scrambling sequence of the system information PDCCH, the information or scrambling sequence in the system information PDSCH. In some embodiments, the above UE capability definition method is particularly applicable to at least one of the following transmissions: the system information PDCCH and PDSCH, the paging information PDCCH and PDSCH, the broadcast information PDCCH and PDSCH.

[0233] In some embodiments, whether the downlink common information adopts the retransmission mode based on the processing using the coverage code can be bound to whether the uplink transmission adopts the retransmission mode. For example, when msg1 / msg3 adopts the retransmission mode, or the terminal requests the retransmission of msg3, the downlink common information will also adopt the retransmission mode based on the processing using the coverage code; the number of repetitions can be configured by the base station, or bound to the number of retransmissions adopted by the uplink transmission. For example, when msg1 / msg3 is retransmitted N times, the number of retransmissions of the downlink common information is a function of N, for example, equal to N, or a multiple or divisor of N.

[0234] In some embodiments, the terminal determines whether to request the retransmission mode based on the processing using the coverage code according to the measurement of the downlink reference signal (for example, SS-RSRP). In some embodiments, the UE only needs to request retransmission for one of the uplink or downlink. Specifically, if the UE requests downlink retransmission, it means that it also requests uplink transmission retransmission. If the UE requests uplink transmission retransmission, it means that it does not request downlink transmission retransmission.

[0235] In some embodiments, both the processing using the coverage code and the retransmission are defined as mandatory UE capabilities, that is, capabilities that all terminals must support, but the retransmission and the processing using the coverage code can be independently enabled / disabled. That is, the network side can choose to only enable the retransmission, or enable both the retransmission and the processing using the coverage code simultaneously. In addition, since the processing using the coverage code needs to be implemented by means of retransmission, the network side cannot enable the processing using the coverage code without enabling the retransmission.

[0236] In some embodiments, both the processing using the overlay code and the retransmission are defined as an optional UE capability, and the retransmission is bound to the processing using the overlay code as a transmission mode (e.g., the retransmission mode based on the processing using the overlay code). The network side needs to enable / disable this transmission mode based on the UE capability.

[0237] In some embodiments, both the processing using the overlay code and the retransmission are defined as an optional UE capability, that is, the network side needs to determine whether it supports this UE capability based on the capability report of the terminal. The terminal needs to support or not support this capability simultaneously. For the UE that reports this capability, the network side can determine whether to enable or disable the corresponding transmission mode for it. Additionally, the network side can choose to only enable the retransmission, or enable both the retransmission and the processing using the overlay code simultaneously. In some embodiments, the above capability definition method is applicable to at least one of the following transmissions: msg2 PDCCH and PDSCH, msg4 PDCCH and PDSCH, paging information PDCCH and PDSCH.

[0238] In some embodiments, the retransmission is defined as a mandatory UE capability, and the processing using the overlay code is defined as an optional UE capability; after the retransmission is enabled, the network side can (e.g., according to the network load) determine whether to further enable the transmission mode using the overlay code for the terminal that supports the overlay code processing.

[0239] In the above embodiments, it involves the terminal reporting its own capabilities for retransmission and / or the processing using the overlay code. The specific reporting methods include at least one of the following:

[0240] Carrying the capability information using msgA PUSCH;

[0241] Dividing the PRACH transmission resources (including resources in the time domain, frequency domain, and preamble sequence dimension) into different groups, and different groups correspond to different UE capabilities.

[0242] Relying on SSB to distinguish: different SSB transmission frequency positions correspond to the transmission mechanisms adopted by the network side, that is, correspond to different UE capabilities, and terminals with corresponding capabilities are allowed to access the network through the SSB at this transmission frequency; different SSBs on the same transmission frequency point correspond to different transmission mechanisms adopted by the network side, and the transmission mode corresponding to a certain SSB is indicated by the signal channel within the SSB, for example, indicated by the information carried in the PBCH, and terminals with corresponding capabilities are allowed to access the network through this SSB;

[0243] Indicating UE capabilities using uplink reference signals (UL RS): The transmission configuration information of UL RS is indicated by channel signals (e.g., PBCH) contained within the SSB on the same carrier. UL RS is used to indicate UE capabilities. For example, different UL RS sequences correspond to different UE capabilities, or different UL RS transmission resources correspond to different UE capabilities. In some embodiments, the transmission configuration information of UL RS can also be indicated by information transmitted on other carriers.

[0244] This embodiment describes a method for improving the coverage and capacity of downlink common information, specifically related to the terminal capability reporting mechanism. This method can effectively achieve the early reporting of the terminal's own capabilities, facilitating the base station to determine the downlink common information transmission mechanism.

[0245] In a specific embodiment, this embodiment describes a method for improving the coverage and capacity of downlink common information, specifically related to the indication method of the coverage code used.

[0246] In some embodiments, at least one of the following methods can be used to indicate the OCC code used, and then the terminal can use a specific OCC code to decode the received information:

[0247] Based on RA-RNTI: Use the value of RA-RNTI to indicate the OCC code

[0248] Schematically, the base station maps the RA-RNTI to a specific OCC code. For example: The lowest bit in the RA-RNTI can be directly mapped to the OCC code index. The lowest two bits of the RA-RNTI being 0 -> the OCC code is [1,1]; the lowest two bits of the RA-RNTI being 1 -> the OCC code is [1, -1]. The base station indicates the OCC code used through this mapping rule. UE determination method: The UE generates its own RA-RNTI from the Msg1 process. Based on the predefined mapping rule, the UE determines the OCC code. The base station and the UE both use the same mapping rule, so no additional signaling overhead is required.

[0249] Based on the PRACH resource index: Use the PRACH resource location for OCC code mapping.

[0250] Based on the random access preamble sequence: Allocate the OCC code through the preamble sequence index.

[0251] Based on the Msg1 time / frequency resource location: Implicitly allocate according to the time and frequency resource location of Msg1.

[0252] Based on the dynamic allocation of broadcast messages: The base station indicates the OCC code allocation rule through the MIB or SIB1.

[0253] Determine the OCC code based on user characteristics (e.g., user identifier).

[0254] The base station explicitly indicates the OCC code assigned to each UE group through PDCCH scheduling information.

[0255] Use the time-frequency resource location of the PDCCH to implicitly indicate the OCC code.

[0256] Use the time-frequency resource allocation of the PDSCH to implicitly indicate the OCC code.

[0257] In some embodiments, for different downlink transmissions corresponding to the same terminal, their transmission modes remain the same, i.e., the enabling state of the transmission mode, the OCC code used, and the number of repetitions.

[0258] This embodiment describes a method for improving downlink common information coverage and capacity, specifically related to the indication method of the coverage code used. This method can effectively implement the indication of the coverage code, facilitate the implementation of the repetition transmission mechanism based on the coverage code processing, and thus effectively improve its coverage and capacity.

[0259] It should be noted that in the case of solving the technical problem of how to improve downlink capacity or downlink coverage in the prior art, in the embodiments of the present application, the implementation process of repeating the first information with the second communication node based on the coverage code information alone, and the related specific embodiments, can be used to achieve the effect of improving downlink capacity, which will not be elaborated here. The specific implementation solution can be referred to the description of the corresponding embodiments above; or, the implementation process of repeating the first information alone, and the related specific embodiments, can be used to achieve the effect of improving downlink coverage, which will not be elaborated here. The specific implementation solution can be referred to the description of the corresponding embodiments above; or, the implementation method combining the repetition transmission mechanism and the coverage code information can be used to improve downlink capacity and downlink coverage, which will not be elaborated here. The specific implementation solution can be referred to the description of the corresponding embodiments above.

[0260] In one embodiment, Figure 14 is the structural block diagram of an information transmission device provided by an embodiment of the present application. This embodiment is applied to the first communication node. As Figure 14 shown, the information transmission device in this embodiment includes: a receiving module 1410.

[0261] The receiving module 1410 is configured to receive the repetition transmission pattern generated by the second communication node.

[0262] The receiving module 1410 is further configured to receive the repeated transmission of the first information from the second communication node based on the repetition transmission pattern.

[0263] In one embodiment, the repeated transmission pattern includes one of the following: time-domain repetition at the first information set level; time-domain repetition at the first information level; time-domain repetition at the symbol level; frequency-domain repetition at the first information level.

[0264] In one embodiment, the repeated transmission pattern includes time-domain repetition at the first information set level;

[0265] The first information set includes at least two first information; each first information set is repeatedly transmitted at a first period; multiple first information sets are repeatedly transmitted at a second period;

[0266] The first information with the same first information identifier in different first information sets satisfies a quasi-co-location relationship;

[0267] The number of first information sets included in one second period is predetermined.

[0268] In one embodiment, the information transmission method applied to the first communication node further includes:

[0269] Receiving a first indication reference signal sent by a second communication node; wherein, the first indication reference signal is used to indicate the position of the first information set or each first information in the first information set at the beginning of a second period.

[0270] In one embodiment, the first indication reference signal includes at least one of the following characteristics:

[0271] The center frequency of the first indication reference signal is aligned with the center frequency of the first information;

[0272] The offset frequency between the center frequency of the first indication reference signal and the center frequency of the first information is a fixed value;

[0273] The number of first indication reference signals included in the first indication reference signal set composed of multiple first indication reference signals is the same as the number of first information included in the first information set;

[0274] The number of symbols of the first indication reference signal is the same as the number of symbols of the first information;

[0275] The time-domain frequency shift between each first indication reference signal included in the first indication reference signal set composed of multiple first indication reference signals and the first information corresponding to the index in the first information set at the beginning of the second period is equal.

[0276] In one embodiment, the time-domain frequency shift is equal to the first period; or, the time-domain frequency shift is predefined or preconfigured.

[0277] In one embodiment, the repeated transmission pattern includes time-domain repetition at the first information level;

[0278] The first information with the same identifier occupies consecutive first information transmission resources.

[0279] In one embodiment, the information transmission method applied to the first communication node further includes:

[0280] Receiving a second indication reference signal sent by the second communication node; wherein, the second indication reference signal is used to indicate the starting position of each repeated transmission of the first information; wherein, a quasi-co-location relationship is satisfied between each second indication reference signal and the corresponding first information.

[0281] In one embodiment, the second indication reference signal includes at least one of the following features:

[0282] The center frequency of the second indication reference signal is aligned with the center frequency of the first information;

[0283] The offset frequency between the center frequency of the second indication reference signal and the center frequency of the first information is a fixed value;

[0284] The second indication reference signal and the first first information of the repeated transmission are in the same time slot;

[0285] The second indication reference signal is in the time slot before the first first information of the repeated transmission.

[0286] In one embodiment, the information transmission method applied to the first communication node further includes:

[0287] Performing repeated transmission of the first information with the second communication node based on the coverage code information.

[0288] In one embodiment, the coverage code information includes at least one of the following: the set of coverage codes corresponding to the first information; the number of coverage codes included in the set of coverage codes; the number of elements included in the coverage code, the coverage code used for the first information transmission.

[0289] In one embodiment, the transmission modes of multiple first information include one of the following:

[0290] Transmission through different antenna panels of the same sending and receiving node;

[0291] Transmission through different sending and receiving nodes;

[0292] Transmission through the same antenna panel of the same sending and receiving node;

[0293] Transmission through the same sending and receiving node, and a quasi-co-location relationship is satisfied between multiple said first information.

[0294] In one embodiment, the set of coverage codes corresponding to the first information corresponds to the number of repeated transmissions of the first information.

[0295] In one embodiment, the number of elements included in the covering code is equal to the number of repeated transmissions of the first information.

[0296] In one embodiment, the number of covering codes included in the set of covering codes is less than or equal to the number of repeated transmissions of the first information.

[0297] In one embodiment, the multiple first information do not satisfy the quasi-co-location relationship.

[0298] In one embodiment, each first information is sent in at least two first information transmission resources; the covering codes used by different first information indicate partial bits of the first information identifier.

[0299] In one embodiment, in the case where one of the first information transmission resources conflicts with the TDD frame structure configuration, all the first information associated with the first information transmission resource is not allowed to be transmitted.

[0300] In one embodiment, in the case where the multiple first information do not satisfy the quasi-co-location relationship, all the signals in the first information are processed using the same covering code.

[0301] In one embodiment, the covering code used for the first information transmission is determined according to at least partial bits in the identification information of the first communication node.

[0302] In one embodiment, when the multiple first information come from the same sending and receiving node and satisfy the quasi-co-location relationship, part of the information in the first information is processed using the covering code.

[0303] In one embodiment, the physical broadcast channel PBCH in the first information is processed using the covering code, and at least one of the following in the first information is not processed using the covering code: the primary synchronization signal, the secondary synchronization signal, and the demodulation reference signal; or,

[0304] The physical downlink control channel PDCCH or the physical downlink shared channel PDSCH in the first information is processed using the covering code, and the demodulation reference signal of the PDCCH or PDSCH is not processed using the covering code.

[0305] In one embodiment, the information transmission method applied to the first communication node further includes:

[0306] Receiving the monitoring occasion pattern information generated by the second communication node;

[0307] Monitoring based on the monitoring occasion pattern information.

[0308] In one embodiment, the multiple first information correspond to the same monitoring window;

[0309] Among them, the monitoring window contains monitoring opportunities equal in number to the number of retransmission times, and the monitoring opportunities are used for PDCCH retransmission.

[0310] In one embodiment, N first pieces of information correspond to M consecutive monitoring opportunities; where M is an integer greater than 1 and N is a positive integer.

[0311] In one embodiment, the information transmission method applied to the first communication node further includes:

[0312] Reporting capability information to the second communication node; where the capability information is used to indicate at least one of the following processing capabilities of the first communication node: coverage code processing; retransmission.

[0313] In one embodiment, the capability information satisfies one of the following conditions:

[0314] All first communication nodes enable the modes of coverage code processing and retransmission and adopt a predefined number of retransmissions;

[0315] Defining whether to enable the modes of coverage code processing and retransmission, and the number of retransmissions, based on the operating frequency;

[0316] All first communication nodes simultaneously enable or disable the modes of coverage code processing and / or retransmission;

[0317] All first communication nodes support coverage code processing and / or retransmission, and coverage code processing and retransmission are independently enabled or disabled;

[0318] Enabling or disabling the modes of coverage code processing and / or retransmission based on the capabilities of the first communication node;

[0319] All first communication nodes simultaneously support the capabilities of coverage code processing and / or retransmission.

[0320] In one embodiment, the capability information is carried or indicated by at least one of the following:

[0321] The physical uplink shared channel PUSCH carrying message A;

[0322] Using the physical random access channel PRACH transmission resource division packets to indicate the capability information of different first communication nodes;

[0323] Using the first information to distinguish the capability information of different first communication nodes;

[0324] Using the uplink reference signal to indicate the capability information of different first communication nodes.

[0325] In one embodiment, at least one of the following is used to indicate the coverage code used for the first information transmission:

[0326] Indication coverage code based on RA-RNTI;

[0327] Perform coverage code mapping based on the PRACH resource index;

[0328] Allocate coverage code based on the random access preamble sequence;

[0329] Allocate coverage code based on the time or frequency resource location of Message 1;

[0330] Determine the coverage code based on user characteristics;

[0331] Indicate the coverage code through the information carried by PDCCH;

[0332] Indicate the coverage code through the time domain resource location of PDCCH;

[0333] Indicate the coverage code through the time-frequency resource location of PDSCH.

[0334] The information transmission device provided in this embodiment is set to implement Figure 2 The information transmission method applied to the first communication node in the illustrated embodiment. The implementation principle and technical effects of the information transmission device provided in this embodiment are similar and will not be elaborated here.

[0335] In one embodiment, Figure 15 is the structural block diagram of another information transmission device provided in the embodiments of the present application. This embodiment is applied to the second communication node. As Figure 15 shown, the information transmission device in this embodiment includes: a generation module 1510 and a transmission module 1520.

[0336] The generation module 1510 is configured to generate a repeated transmission pattern.

[0337] The transmission module 1520 is configured to send a repeated transmission of the first information to the first communication node based on the repeated transmission pattern.

[0338] In one embodiment, the repeated transmission pattern includes one of the following: time domain repetition at the first information set level; time domain repetition at the first information level; time domain repetition at the symbol level; frequency domain repetition at the first information level.

[0339] In one embodiment, the repeated transmission pattern includes time domain repetition at the first information set level;

[0340] The first information set includes at least two first information; each first information set is repeatedly transmitted at a first period; multiple first information sets are repeatedly transmitted at a second period;

[0341] The first information with the same first information identifier within different first information sets satisfies the quasi-co-location relationship;

[0342] The number of first information sets included in a second period is predetermined.

[0343] In one embodiment, the information transmission method applied to the second communication node further includes:

[0344] Sending a first indication reference signal to the first communication node; wherein, the first indication reference signal is used to indicate the position of the first first information set or each first information within the first first information set in a second period.

[0345] In one embodiment, the first indication reference signal includes at least one of the following characteristics: the center frequency of the first indication reference signal is aligned with the center frequency of the first information; the offset frequency between the center frequency of the first indication reference signal and the center frequency of the first information is a fixed value; the number of first indication reference signals included in the first indication reference signal set composed of multiple first indication reference signals is the same as the number of first information included in the first information set; the number of symbols of the first indication reference signal is the same as the number of symbols of the first information; the time-domain frequency shift between each first indication reference signal included in the first indication reference signal set composed of multiple first indication reference signals and the first information corresponding to the corresponding index in the first first information set in the second period is equal.

[0346] In one embodiment, the time-domain frequency shift is equal to the first period; or, the time-domain frequency shift is predefined or preconfigured.

[0347] In one embodiment, the repeated transmission pattern includes time-domain repetition at the first information level;

[0348] The first information with the same identifier occupies continuous first information transmission resources.

[0349] In one embodiment, the information transmission method applied to the second communication node further includes:

[0350] Sending a second indication reference signal to the second communication node; wherein, the second indication reference signal is used to indicate the starting position of each repeated transmission of the first information; wherein, each second indication reference signal and the corresponding first information satisfy a quasi-co-location relationship.

[0351] In one embodiment, the second indication reference signal includes at least one of the following characteristics: the center frequency of the second indication reference signal is aligned with the center frequency of the first information; the offset frequency between the center frequency of the second indication reference signal and the center frequency of the first information is a fixed value; the second indication reference signal and the first first information of the repeated transmission are in the same time slot; the second indication reference signal is in the time slot before the first first information of the repeated transmission.

[0352] In one embodiment, the information transmission method applied to the second communication node further includes:

[0353] Performing repeated transmission of the first information with the first communication node based on the coverage code information.

[0354] In one embodiment, the coverage code information includes at least one of the following: the set of coverage codes corresponding to the first information; the number of coverage codes included in the coverage code set; the number of elements included in the coverage code, and the coverage code used for the transmission of the first information.

[0355] In one embodiment, the transmission modes of multiple first information include one of the following: transmission through different antenna panels of the same sending and receiving node; transmission through different sending and receiving nodes; transmission through the same antenna panel of the same sending and receiving node; transmission through the same sending and receiving node, and a quasi-co-location relationship is satisfied among multiple pieces of the first information.

[0356] In one embodiment, the set of coverage codes corresponding to the first information corresponds to the number of repeated transmissions of the first information.

[0357] In one embodiment, the number of elements included in the coverage code is equal to the number of repeated transmissions of the first information.

[0358] In one embodiment, the number of coverage codes included in the coverage code set is less than or equal to the number of repeated transmissions of the first information.

[0359] In one embodiment, a quasi-co-location relationship is not satisfied among multiple pieces of the first information.

[0360] In one embodiment, each piece of the first information is sent within at least two first information transmission resources; the coverage codes used for different first information indicate partial bits of the first information identifier.

[0361] In one embodiment, in the case where one of the first information transmission resources conflicts with the TDD frame structure configuration, all the first information associated with the first information transmission resource is not allowed to be transmitted.

[0362] In one embodiment, in the case where a quasi-co-location relationship is not satisfied among multiple pieces of the first information, all the signals within the first information are processed using the same coverage code.

[0363] In one embodiment, the coverage code used for the transmission of the first information is determined according to at least partial bits in the identification information of the first communication node.

[0364] In one embodiment, multiple pieces of the first information come from the same beam direction of the same sending and receiving node, and partial information within the first information is processed using the coverage code.

[0365] In one embodiment, the physical broadcast channel PBCH in the first information is processed using a coverage code, and at least one of the following in the first information is not processed using a coverage code: the primary synchronization signal, the secondary synchronization signal, and the demodulation reference signal; or,

[0366] The physical downlink control channel PDCCH or the physical downlink shared channel PDSCH in the first information is processed using a coverage code, and the demodulation reference signal of the PDCCH or PDSCH is not processed using a coverage code.

[0367] In one embodiment, the information transmission method applied to the second communication node further includes: generating monitoring occasion pattern information; sending the monitoring occasion pattern information to the first communication node.

[0368] In one embodiment, multiple first information corresponds to the same monitoring window;

[0369] Wherein, the monitoring window contains the same number of monitoring occasions as the number of retransmission times, and the monitoring occasions are used for PDCCH retransmission.

[0370] In one embodiment, N pieces of first information correspond to M consecutive monitoring occasions; wherein, M is an integer greater than 1, and N is a positive integer.

[0371] In one embodiment, the information transmission method applied to the second communication node further includes: receiving the capability information reported by the first communication node; wherein, the capability information is used to indicate at least one of the following processing capabilities of the first communication node: coverage code processing; retransmission.

[0372] In one embodiment, the capability information satisfies one of the following conditions: all first communication nodes enable the modes of coverage code processing and retransmission, and adopt a predefined number of retransmissions; whether to enable the modes of coverage code processing and retransmission, and the number of retransmissions is defined based on the operating frequency; all first communication nodes simultaneously enable or disable the modes of coverage code processing and / or retransmission; all first communication nodes support coverage code processing and / or retransmission, and the coverage code processing and retransmission are independently enabled or disabled; the modes of coverage code processing and / or retransmission are enabled or disabled based on the capabilities of the first communication node; all first communication nodes simultaneously support the capabilities of coverage code processing and / or retransmission.

[0373] In one embodiment, the capability information is carried or indicated by at least one of the following: the physical uplink shared channel PUSCH carrying message A; using the packet divided by the PRACH transmission resource to indicate the capability information of different first communication nodes; using the first information to distinguish the capability information of different first communication nodes; using the uplink reference signal to indicate the capability information of different first communication nodes.

[0374] In one embodiment, at least one of the following is used to indicate the covering code adopted for the first information transmission: indicating the covering code based on the RA-RNTI; mapping the covering code based on the PRACH resource index; allocating the covering code based on the random access preamble sequence; allocating the covering code based on the time or frequency resource position of Message 1; determining the covering code based on user characteristics; indicating the covering code through the information carried by the PDCCH; indicating the covering code through the time domain resource position of the PDCCH; indicating the covering code through the time-frequency resource position of the PDSCH.

[0375] The information transmission device provided in this embodiment is configured to implement Figure 3 the information transmission method applied to the second communication node in the illustrated embodiment. The implementation principle and technical effect of the information transmission device provided in this embodiment are similar and will not be elaborated here.

[0376] In one embodiment, Figure 16 is a schematic structural diagram of a communication device provided in an embodiment of the present application. As Figure 16 shown, the device provided in the present application includes: a processor 1610, a memory 1620, and a communication module 1630. The number of processors 1610 in the device may be one or more, Figure 16 and one processor 1610 is taken as an example here. The number of memories 1620 in the device may be one or more, Figure 16 and one memory 1620 is taken as an example here. The processor 1610, memory 1620, and communication module 1630 of the device may be connected through a bus or other means, Figure 16 and connected through a bus is taken as an example here. In this embodiment, the device may be the first communication node or the second communication node.

[0377] The memory 1620, as a computer-readable storage medium, may be configured to store software programs, computer-executable programs, and modules, such as the program instructions / modules corresponding to the device in any embodiment of the present application (for example, the receiving module in the information transmission device applied to the first communication node). The memory 1620 may include a program storage area and a data storage area. Among them, the program storage area may store an operating system and application programs required for at least one function; the data storage area may store data created according to the use of the device, etc. In addition, the memory 1620 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state storage devices. In some instances, the memory 1620 may further include a memory remotely set relative to the processor 1610, and these remote memories may be connected to the device through a network. Examples of the above network include, but are not limited to, the Internet, an enterprise intranet, a local area network, a mobile communication network, and combinations thereof.

[0378] When the communication device is the first communication node, the device provided above can be set to execute the information transmission method applied to the first communication node provided in any of the above embodiments, and has the corresponding functions and effects.

[0379] When the communication device is the second communication node, the device provided above can be set to execute the information transmission method applied to the second communication node provided in any of the above embodiments, and has the corresponding functions and effects.

[0380] An embodiment of the present application further provides a storage medium including computer-executable instructions, and the computer-executable instructions are used to execute an information transmission method applied to a first communication node when being executed by a computer processor. The method includes: receiving a repeated transmission pattern generated by a second communication node; receiving a repeated transmission of first information sent by the second communication node based on the repeated transmission pattern.

[0381] An embodiment of the present application further provides a storage medium including computer-executable instructions, and the computer-executable instructions are used to execute an information transmission method applied to a second communication node when being executed by a computer processor. The method includes: generating a repeated transmission pattern; sending a repeated transmission of first information to a first communication node based on the repeated transmission pattern.

[0382] Those skilled in the art should understand that the term user equipment covers any suitable type of wireless user equipment, such as a mobile phone, a portable data processing device, a portable network browser, or a vehicle-mounted mobile station.

[0383] Generally, various embodiments of the present application can be implemented in hardware or a dedicated circuit, software, logic, or any combination thereof. For example, some aspects can be implemented in hardware, while other aspects can be implemented in firmware or software that can be executed by a controller, a microprocessor, or other computing devices, although the present application is not limited thereto.

[0384] Embodiments of the present application can be implemented by a data processor of a mobile device executing computer program instructions, such as in a processor entity, or by hardware, or by a combination of software and hardware. The computer program instructions can be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-related instructions, microcode, firmware instructions, status setting data, or source code or object code written in any combination of one or more programming languages.

[0385] Any block diagram of a logic flow in the accompanying drawings of the present application may represent a program step, or may represent interconnected logic circuits, modules, and functions, or may represent a combination of program steps and logic circuits, modules, and functions. A computer program may be stored in a memory. The memory may have any type suitable for the local technical environment and may be implemented using any suitable data storage technology, such as but not limited to read-only memory (ROM), random access memory (RAM), optical memory devices and systems (digital video disc (DVD) or compact disk (CD)), etc. The computer-readable medium may include a non-transitory storage medium. The data processor may be any type suitable for the local technical environment, such as but not limited to a general-purpose computer, a special-purpose computer, a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field-programmable gate array (FGPA), and a processor based on a multi-core processor architecture.

[0386] The foregoing are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. An information transmission method, characterized in that, Applied to a first communication node, including: Receiving a repeated transmission pattern generated by a second communication node; Receiving a repeated transmission of first information sent by the second communication node based on the repeated transmission pattern.

2. The method according to claim 1, wherein The repeated transmission pattern includes one of the following: time-domain repetition at the first information set level; time-domain repetition at the first information level; time-domain repetition at the symbol level; frequency-domain repetition at the first information level.

3. The method according to claim 2, characterized in that, The repeated transmission pattern includes time-domain repetition at the first information set level; The first information set includes at least two first information; each first information set is repeatedly transmitted at a first period; multiple first information sets are repeatedly transmitted at a second period; First information with the same first information identifier within different first information sets satisfies a quasi-co-location relationship; The number of first information sets included within one second period is predetermined.

4. The method according to claim 3, characterized in that, The method further includes: Receiving a first indication reference signal sent by the second communication node; wherein, the first indication reference signal is used to indicate the position of the first first information set or each first information within the first first information set within one second period.

5. The method according to claim 4, wherein The first indication reference signal includes at least one of the following characteristics: The center frequency of the first indication reference signal is aligned with the center frequency of the first information; The offset frequency between the center frequency of the first indication reference signal and the center frequency of the first information is a fixed value; The number of first indication reference signals included within a first indication reference signal set composed of multiple first indication reference signals is the same as the number of first information included within the first information set; The number of symbols of the first indication reference signal is the same as the number of symbols of the first information; The time-frequency shift between each first indication reference signal included within a first indication reference signal set composed of multiple first indication reference signals and the first information with the corresponding index within the first first information set within the second period is equal.

6. The method according to claim 5, wherein The time-frequency shift is equal to the first period; or, the time-frequency shift is predefined or preconfigured.

7. The method according to claim 2, wherein The repeated transmission pattern includes time-domain repetition at the first information level; First information with the same identifier occupies consecutive first information transmission resources.

8. The method according to claim 7, wherein The method further includes: Receiving a second indication reference signal sent by the second communication node; wherein, the second indication reference signal is used to indicate the start position of each first information repeated transmission; wherein, each second indication reference signal satisfies a quasi-co-location relationship with the corresponding first information.

9. The method according to claim 8, wherein The second indication reference signal includes at least one of the following characteristics: The center frequency of the second indication reference signal is aligned with the center frequency of the first information; The offset frequency between the center frequency of the second indication reference signal and the center frequency of the first information is a fixed value; The second indication reference signal is in the same time slot as the first first information of the repeated transmission; The second indication reference signal is in the time slot before the first first information of the repeated transmission.

10. The method according to any one of claims 1-9, characterized in that, The method further includes: Performing repeated transmission of first information with the second communication node based on coverage code information.

11. The method according to claim 10, wherein The coverage code information includes at least one of the following: the set of coverage codes corresponding to the first information; the number of coverage codes included in the coverage code set; the number of elements included in the coverage code, and the coverage code used for transmitting the first information.

12. The method according to claim 10, wherein The transmission methods of multiple pieces of the first information include one of the following: Transmission is performed through different antenna panels of the same sending and receiving node; Transmission is performed through different sending and receiving nodes; Transmission is performed through the same antenna panel of the same sending and receiving node; Transmission is performed through the same sending and receiving node, and a quasi-co-location relationship is satisfied among multiple pieces of the first information.

13. The method according to claim 11, characterized in that, The set of coverage codes corresponding to the first information corresponds to the number of times of repeated transmission of the first information.

14. The method according to claim 11, wherein The number of elements included in the coverage code is equal to the number of times of repeated transmission of the first information.

15. The method according to claim 11, wherein The number of coverage codes included in the coverage code set is less than or equal to the number of times of repeated transmission of the first information.

16. The method according to claim 12, wherein A quasi-co-location relationship is not satisfied among multiple pieces of the first information.

17. The method according to claim 10, wherein Each piece of the first information is sent within at least two first information transmission resources; the coverage codes used for different pieces of the first information indicate partial bits of the first information identifier.

18. The method according to claim 10, wherein In the case where one of the first information transmission resources conflicts with the TDD frame structure configuration, all the first information associated with the first information transmission resource is not allowed to be transmitted.

19. The method according to claim 10, characterized in that, In the case where a quasi-co-location relationship is not satisfied among multiple pieces of the first information, all the signals within the first information are processed using the same coverage code.

20. The method according to claim 11, wherein The coverage code used for transmitting the first information is determined according to at least some of the bit positions in the identification information of the first communication node.

21. The method according to claim 10, characterized in that, In the case where multiple pieces of the first information come from the same sending and receiving node and satisfy the quasi-co-location relationship, partial information within the first information is processed using the coverage code.

22. The method according to claim 21, wherein The physical broadcast channel PBCH within the first information is processed using the coverage code, and at least one of the following within the first information is not processed using the coverage code: the primary synchronization signal, the secondary synchronization signal, and the demodulation reference signal; or, The physical downlink control channel PDCCH or the physical downlink shared channel PDSCH within the first information is processed using the coverage code, and the demodulation reference signal of the PDCCH or PDSCH is not processed using the coverage code.

23. The method according to claim 1, wherein The method further includes: Receiving the monitoring occasion pattern information generated by the second communication node; Performing monitoring based on the monitoring occasion pattern information.

24. The method according to claim 23, wherein, Multiple pieces of the first information correspond to the same monitoring window; Wherein, the monitoring window includes the same number of monitoring occasions as the number of times of repeated transmission, and the monitoring occasions are used for PDCCH repeated transmission.

25. The method according to claim 23, characterized in that, N pieces of the first information correspond to M consecutive monitoring occasions; where M is an integer greater than 1 and N is a positive integer.

26. The method according to claim 1, wherein The method further includes: Reporting the capability information to the second communication node; wherein, the capability information is used to indicate at least one of the following processing capabilities of the first communication node: coverage code processing; repeated transmission.

27. The method according to claim 26, wherein The capability information satisfies one of the following conditions: All the first communication nodes enable the modes of coverage code processing and repeated transmission and adopt a predefined number of repetitions; Define whether the first communication node enables the coverage code processing and the mode of repeated transmission, as well as the number of repetitions, based on the operating frequency; All the first communication nodes enable or disable the coverage code processing and / or the mode of repeated transmission simultaneously; All the first communication nodes support the coverage code processing and / or the repeated transmission, and the coverage code processing and the repeated transmission are enabled or disabled independently; Enable or disable the coverage code processing and / or the mode of repeated transmission based on the capabilities of the first communication node; All the first communication nodes support the capabilities of the coverage code processing and / or the repeated transmission simultaneously.

28. The method according to claim 27, wherein The capability information is carried or indicated by at least one of the following: The physical uplink shared channel PUSCH carrying message A; Use the physical random access channel PRACH transmission resource division packets to indicate the capability information of different first communication nodes; Use the first information to distinguish the capability information of different first communication nodes; Use the uplink reference signal to indicate the capability information of different first communication nodes.

29. The method according to claim 1, characterized in that, Indicate the coverage code used for the transmission of the first information by at least one of the following: Indicate the coverage code based on the RA-RNTI; Map the coverage code based on the PRACH resource index; Allocate the coverage code based on the random access preamble sequence; Allocate the coverage code based on the time or frequency resource position of message 1; Determine the coverage code based on user characteristics; Indicate the coverage code through the information carried by the PDCCH; Indicate the coverage code through the time domain resource position of the PDCCH; Indicate the coverage code through the time-frequency resource position of the PDSCH.

30. An information transmission method, characterized in that, Applied to the second communication node, including: Generate a repeated transmission pattern; Send the repeated transmission of the first information to the first communication node based on the repeated transmission pattern.

31. The method according to claim 30, wherein The method further includes: Send a first indication reference signal to the first communication node; wherein, the first indication reference signal is used to indicate the position of the first information set or each first information within the first information set in a second period.

32. The method according to claim 30, wherein The method further includes: Send a second indication reference signal to the second communication node; wherein, the second indication reference signal is used to indicate the start position of the repeated transmission of each first information; wherein, each of the second indication reference signals and the corresponding first information satisfies the quasi-co-location relationship.

33. The method according to any one of claims 30-32, characterized in that, The method further includes: Perform the repeated transmission of the first information with the first communication node based on the coverage code information.

34. The method according to any one of claims 30-32, characterized in that, The method further includes: Generate listening opportunity pattern information; Send the listening opportunity pattern information to the first communication node.

35. The method according to any one of claims 30-32, characterized in that, The method further includes: Receive the capability information reported by the first communication node; wherein, the capability information is used to indicate at least one of the following processing capabilities of the first communication node: coverage code processing; repeated transmission.

36. A communication device, characterized in that, Includes: A memory, and one or more processors; The memory is configured to store one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the method according to any one of claims 1-29 or 30-35 above.

37. A storage medium, characterized in that, The storage medium stores a computer program, and when the computer program is executed by a processor, it implements the method described in any one of claims 1-29 or 30-35 above.

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