Communication method and apparatus, and storage medium and program product

Abstract

The present disclosure relates to the technical field of communications. Provided are a communication method and apparatus, and a storage medium and a program product, which are used for reducing the waste of communication resources. The method comprises: a first communication node determining a communication mode corresponding to the first communication node, wherein the communication mode belongs to a communication mode set, and the communication mode set at least comprises the first communication mode; and communicating with a second communication node on the basis of the communication mode corresponding to the first communication node.

Description

Communication methods, devices, storage media and software products

[0001] This disclosure claims priority to Chinese patent application No. 202411917825.X, filed on December 24, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of communication technology, and in particular to a communication method, apparatus, storage medium, and program product. Background Technology

[0003] Currently, with the continuous advancement of communication technology, the performance requirements for wireless communication are increasing, and the demands on wireless communication are becoming more diverse. Communication technology also needs to provide services for a variety of communication devices (such as terminals), and different types of communication devices may have different performance requirements for wireless communication. For example, mobile communication devices typically experience significant Doppler shifts and faster channel changes, potentially requiring more resources and more complex processing to ensure communication quality, while stationary communication devices are relatively stable, and their performance requirements for wireless communication differ from those of mobile devices. However, currently, using similar wireless communication modes for multiple types of communication nodes may result in low compatibility between the adopted wireless communication mode and the channel characteristics of the terminal, leading to unnecessary resource waste, increased power consumption, and increased communication latency. Summary of the Invention

[0004] This disclosure provides a communication method, apparatus, storage medium, and program product for reducing the waste of communication resources.

[0005] To achieve the above objectives, the present disclosure adopts the following technical solution:

[0006] In a first aspect, this disclosure provides a communication method applied to a first communication node, the method comprising:

[0007] Determine the communication mode corresponding to the first communication node, wherein the communication mode belongs to the communication mode set, and the communication mode set includes at least the first communication mode;

[0008] The first communication node communicates with the second communication node based on the communication mode corresponding to the first communication node.

[0009] Secondly, this disclosure also provides another communication method applied to a second communication node, the method comprising:

[0010] Determine the communication mode corresponding to the first communication node, wherein the communication mode belongs to the communication mode set, and the communication mode set includes at least the first communication mode;

[0011] Communicate with the first communication node based on the communication mode corresponding to the first communication node.

[0012] Thirdly, this disclosure provides another communication method applied to a first communication node, the method comprising:

[0013] Control information is received from a second communication node on the first link; the control information includes information broadcast in a broadcast channel, and / or the control information includes information related to the second link, wherein the second link includes a communication link between the first communication node and one or more third communication nodes; the information related to the second link includes at least one of the following:

[0014] The correspondence between the index of the data received by the first communication node on the first link or the third link and the resources on the second link; the correspondence between the resources on the second link and the transmission adjustment amount; the correspondence between the index of the data received by the first communication node on the first link or the third link and the transmission adjustment amount on the second link; and the correspondence between the index of the data received by the first communication node on the first link or the third link and the index of one or more third communication nodes.

[0015] The third link is the link between the fourth communication node and the first communication node; the resources include at least one of the following: time domain resources, frequency domain resources, code domain resources, and spatial domain resources; the transmission adjustment includes at least one of the following: time domain adjustment, phase adjustment, amplitude adjustment, frequency adjustment, and power adjustment.

[0016] Fourthly, this disclosure also provides another communication method applied to a second communication node, the method comprising:

[0017] Sending control information to a first communication node on the first link, the control information being included in a broadcast channel, and / or the control information including information related to a second link, wherein the second link includes a communication link between the first communication node and one or more third communication nodes; the information related to the second link includes at least one of the following:

[0018] The correspondence between the index of the data received by the first communication node on the first link or the third link and the resources on the second link; the correspondence between the resources on the second link and the transmission adjustment amount; the correspondence between the index of the data received by the first communication node on the first link or the third link and the transmission adjustment amount on the second link; and the correspondence between the index of the data received by the first communication node on the first link or the third link and the index of one or more third communication nodes.

[0019] The third link is the link between the fourth communication node and the first communication node; the resources include at least one of the following: time domain resources, frequency domain resources, code domain resources, and spatial domain resources; the transmission adjustment includes at least one of the following: time domain adjustment, phase adjustment, amplitude adjustment, frequency adjustment, and power adjustment.

[0020] Fifthly, this disclosure provides a communication device applied to a first communication node, the communication device comprising:

[0021] The determining module is used to determine the communication mode corresponding to the first communication node, wherein the communication mode belongs to a communication mode set, and the communication mode set includes at least the first communication mode;

[0022] The communication module is used to communicate with the second communication node based on the communication mode corresponding to the first communication node.

[0023] Sixthly, this disclosure also provides another communication device for use in a second communication node, the communication device comprising:

[0024] The determining module is used to determine the communication mode corresponding to the first communication node, wherein the communication mode belongs to a communication mode set, and the communication mode set includes at least the first communication mode;

[0025] The communication module is used to communicate with the first communication node based on the communication mode corresponding to the first communication node.

[0026] In a seventh aspect, this disclosure provides another communication device for use in a first communication node, the communication device comprising:

[0027] A receiving module is configured to receive control information from a second communication node on a first link; the control information includes information broadcast in a broadcast channel, and / or the control information includes information related to the second link, wherein the second link includes a communication link between the first communication node and one or more third communication nodes; the information related to the second link includes at least one of the following:

[0028] The correspondence between the index of the data received by the first communication node on the first link or the third link and the resources on the second link; the correspondence between the resources on the second link and the transmission adjustment amount; the correspondence between the index of the data received by the first communication node on the first link or the third link and the transmission adjustment amount on the second link; and the correspondence between the index of the data received by the first communication node on the first link or the third link and the index of one or more third communication nodes.

[0029] The third link is the link between the fourth communication node and the first communication node; the resources include at least one of the following: time domain resources, frequency domain resources, code domain resources, and spatial domain resources; the transmission adjustment includes at least one of the following: time domain adjustment, phase adjustment, amplitude adjustment, frequency adjustment, and power adjustment.

[0030] Eighthly, this disclosure also provides another communication device for use in a second communication node, the communication device comprising:

[0031] The transmitting module is configured to transmit control information to a first communication node on a first link, the control information being included in a broadcast channel, and / or the control information including information related to a second link, wherein the second link includes a communication link between the first communication node and one or more third communication nodes; the information related to the second link includes at least one of the following:

[0032] The correspondence between the index of the data received by the first communication node on the first link or the third link and the resources on the second link; the correspondence between the resources on the second link and the transmission adjustment amount; the correspondence between the index of the data received by the first communication node on the first link or the third link and the transmission adjustment amount on the second link; and the correspondence between the index of the data received by the first communication node on the first link or the third link and the index of one or more third communication nodes.

[0033] The third link is the link between the fourth communication node and the first communication node; the resources include at least one of the following: time domain resources, frequency domain resources, code domain resources, and spatial domain resources; the transmission adjustment includes at least one of the following: time domain adjustment, phase adjustment, amplitude adjustment, frequency adjustment, and power adjustment.

[0034] A ninth aspect provides a communication device, comprising: a processor and a memory; the memory storing processor-executable instructions; when the processor is configured to execute the instructions, causing the communication device to implement any of the methods provided in the first to fourth aspects described above.

[0035] In a tenth aspect, a computer-readable storage medium is provided that stores computer instructions, which, when executed on a computer, cause the computer to perform any of the methods provided in the first to fourth aspects.

[0036] Eleventhly, a computer program product containing computer instructions is provided, which, when executed on a computer, causes the computer to perform any of the methods provided in the first to fourth aspects.

[0037] Based on the technical solutions provided in this disclosure, a communication mode corresponding to the first communication node (e.g., a terminal) can be provided within a set of communication modes. For example, a first communication mode can be provided for a terminal whose channel changes are insignificant or negligible within a predetermined time period. The set of communication modes can also provide multiple communication modes, allowing a second communication node (e.g., a base station) to flexibly select a communication mode that better matches the channel characteristics of the first communication node. In this way, while ensuring the communication quality between communication nodes, spectrum efficiency can be effectively improved, power consumption reduced, communication latency lowered, communication resources fully utilized, and communication costs reduced. In addition, this disclosure also provides a new communication link method adapted to a new type of relay node, and provides a broadcast channel transmission method that can effectively reduce the overhead of the broadcast channel. Attached Figure Description

[0038] The accompanying drawings are provided to further understand the technical solutions of this disclosure and constitute a part of the specification. They are used together with the embodiments of this disclosure to explain the technical solutions of this disclosure and do not constitute a limitation on the technical solutions of this disclosure.

[0039] Figure 1 is a schematic diagram of the architecture of a communication system provided in an embodiment of this disclosure;

[0040] Figure 2 is a flowchart of a communication method provided in an embodiment of this disclosure;

[0041] Figure 3 is a schematic diagram of multiple PDSCHs corresponding to one HARQ-ACK message provided in an embodiment of this disclosure;

[0042] Figure 4 is a schematic diagram of another instance of multiple PDSCHs corresponding to one HARQ-ACK message provided in an embodiment of this disclosure;

[0043] Figure 5 is a schematic diagram of another instance of multiple PDSCHs corresponding to one HARQ-ACK message provided in an embodiment of this disclosure;

[0044] Figure 6 is a schematic diagram of another instance of multiple PDSCHs corresponding to one HARQ-ACK message provided in an embodiment of this disclosure;

[0045] Figure 7 is a schematic diagram of a method for scheduling multiple PDSCHs using multiple PDCCHs, where one DCI1 corresponds to multiple PDSCHs and one DCI2 corresponds to one PDSCH, according to an embodiment of this disclosure.

[0046] Figure 8 is a schematic diagram of another method of scheduling multiple PDSCHs using multiple PDCCHs, where one DCI1 corresponds to multiple PDSCHs and one DCI2 corresponds to multiple PDSCHs, according to an embodiment of this disclosure.

[0047] Figure 9 is a schematic diagram of an uplink frequency domain bandwidth corresponding to a downlink frequency domain bandwidth group provided in an embodiment of the present disclosure;

[0048] Figure 10 is a schematic diagram of one uplink frequency domain bandwidth corresponding to multiple downlink frequency domain bandwidth groups provided in an embodiment of the present disclosure;

[0049] Figure 11 is a flowchart of another communication method provided in an embodiment of this disclosure;

[0050] Figure 12 is a schematic diagram of a transmission link of a first link, a second link, and a third link provided in an embodiment of this disclosure;

[0051] Figure 13 is a schematic diagram of another transmission link of the first link, the second link, and the third link provided in an embodiment of this disclosure;

[0052] Figure 14 is a flowchart of another communication method provided in an embodiment of this disclosure;

[0053] Figure 15 is a flowchart of another communication method provided in an embodiment of this disclosure;

[0054] Figure 16 is a flowchart of another communication method provided in an embodiment of this disclosure;

[0055] Figure 17 is a schematic diagram of the composition of a communication device provided in an embodiment of this disclosure;

[0056] Figure 18 is a schematic diagram of another communication device provided in an embodiment of this disclosure;

[0057] Figure 19 is a schematic diagram of the composition of another communication device provided in an embodiment of this disclosure;

[0058] Figure 20 is a schematic diagram of the composition of another communication device provided in an embodiment of this disclosure;

[0059] Figure 21 is a schematic diagram of the structure of a communication device provided in an embodiment of this disclosure. Detailed Implementation

[0060] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this disclosure.

[0061] Unless the context otherwise requires, throughout the specification and claims, the term "comprise" and its other forms, such as the third-person singular "comprises" and the present participle "comprising," are interpreted as open-ended and encompassing, meaning "including, but not limited to." In the description of the specification, terms such as "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific example," or "some examples," etc., are intended to indicate that a particular feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of this disclosure. The illustrative representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics mentioned may be included in any suitable manner in any one or more embodiments or examples.

[0062] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0063] In this disclosure, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design described as "exemplary" or "for example" in this disclosure should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0064] In addition, the use of “based on” implies openness and inclusivity, because processes, steps, calculations or other actions “based on” one or more of the stated conditions or values ​​may in practice be based on additional conditions or values ​​beyond those stated.

[0065] In wireless communication, the difference in the moving speed of terminals significantly affects the temporal variation characteristics of the wireless channel. When a device experiences rapid channel changes over a period of time, such as fast-moving mobile devices or terminals whose movement distance over a period of time is not negligible, the wireless channel will undergo more frequent and drastic changes. Wireless communication modes need to be highly flexible and adaptable to cope with these rapid changes and ensure communication stability and reliability. For devices whose channel changes are negligible or insignificant over a period of time, such as fixed-location devices, devices with negligible movement speeds, or devices whose movement distances are negligible (e.g., although the device's movement speed is not low, the channel changes caused by movement distance are still negligible compared to the communication time unit), or the time domain length corresponding to multiple transmission units is very small, the channel changes caused by movement are still negligible, and the changes in the wireless channel are relatively slow and stable. Therefore, more stable and efficient communication strategies can be adopted. It is evident that different movement speeds of communication nodes result in different temporal variation characteristics of the wireless channel, thus requiring different wireless communication mechanisms. However, related new radio (NR) technologies have not fully considered the diverse communication needs of devices. For example, both high-speed mobile terminals and fixed access nodes employ very similar communication mechanisms. Consequently, for access nodes where channel variations are negligible, resources may be over-configured, leading to unnecessary waste. Inflexible communication modes fail to fully utilize the characteristics of the device's wireless channel, resulting in wasted spectrum resources, unnecessary power consumption, and unnecessary communication latency.

[0066] In view of this, this disclosure provides a communication method. Based on this method, a first communication node can determine a communication mode corresponding to itself, wherein the communication mode belongs to a set of communication modes, and the set of communication modes includes at least a first communication mode; and communicates with a second communication node based on the communication mode corresponding to the first communication node. In this way, the technical solution of this disclosure can provide a communication mode that is more compatible with the channel characteristics for a first communication node where changes in channel characteristics are negligible. This ensures the communication quality between communication nodes while fully utilizing communication resources and reducing communication costs.

[0067] The method provided in this disclosure can be applied to various communication systems. For example, the communication system can be a Long Term Evolution (LTE) system, a 5th generation mobile network (5G) communication system, a Wi-Fi system, a 3rd Generation Partnership Project (3GPP) related communication system, a future evolution communication system (such as a 6th generation (6G) communication system), or a system integrating multiple systems, etc., without limitation. The following description uses the communication system 100 shown in Figure 1 as an example to illustrate the method provided in this disclosure. Figure 1 is merely a schematic diagram and does not constitute a limitation on the applicable scenarios of the technical solution provided in this disclosure.

[0068] Figure 1 is a schematic diagram of the architecture of a communication system provided in an embodiment of this disclosure. As shown in Figure 1, the communication system 100 may include at least one first communication node 11 and at least one second communication node 12. The first communication node 11 can be communicatively connected to the second communication node 12.

[0069] In some embodiments, the first communication node 11 may also be referred to as a terminal, user equipment (UE), mobile station, mobile terminal, etc. For example, the first communication node 11 can be a device with wireless transceiver capabilities, which can be deployed on land, including indoor or outdoor handheld, wearable, or vehicle-mounted devices; it can also be deployed on water (such as ships); and it can also be deployed in the air (e.g., on airplanes, balloons, and satellites). The terminal can be a mobile phone, tablet computer, computer with wireless transceiver capabilities, virtual reality (VR) terminal, augmented reality (AR) terminal, wireless terminal in industrial control, wireless terminal in self-driving, wireless terminal in remote medical care, wireless in smart grids, wireless terminal in transportation safety, wireless terminal in smart cities, wireless terminal in smart homes, etc. A terminal may also be referred to as a user, access terminal, UE unit, mobile station, mobile station, remote station, remote terminal, mobile device, UE terminal, wireless communication device, UE agent, or UE device, etc. The embodiments disclosed herein do not limit the specific device form adopted by the terminal.

[0070] The second communication node 12 can be a network-side device (including but not limited to base stations), such as an evolved NodeB (eNB), a next-generation NodeB (gNB), a transmission receive point (TRP), a transmission point (TP), and some other access node. Based on the size of the service coverage area provided, base stations can be further divided into macro base stations for providing macro cells, micro base stations for providing micro cells, and femto base stations for providing femto cells. With the continuous evolution of wireless communication technology, future base stations may also adopt other names.

[0071] It should be noted that Figure 1 is only an exemplary framework diagram. The number of devices or nodes included in Figure 1 and the names of each device are not limited. In addition to the functional nodes shown in Figure 1, the communication system may also include other nodes or devices, such as core network devices.

[0072] In some embodiments, this scheme is also suitable for sidelink communication mode, in which case the first communication node and the second communication node can be two communication devices of the same type. For example, the type of the second communication node can be the same as that of the first communication node. For example, the second communication node can be at least one of the following: terminal, user equipment (UE), mobile station, mobile terminal, etc. The first communication node and the second communication node can be two terminals in the communication system.

[0073] The system architecture and business scenarios described in the embodiments of this disclosure are intended to more clearly illustrate the technical solutions of the embodiments of this disclosure, and do not constitute a limitation on the technical solutions provided by the embodiments of this disclosure. As those skilled in the art will know, with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of this disclosure are also applicable to similar technical problems.

[0074] The embodiments provided in this disclosure will now be described in detail with reference to the accompanying drawings.

[0075] As shown in Figure 2, this disclosure provides a communication method applied to a first communication node, comprising:

[0076] S101. Determine the communication mode corresponding to the first communication node.

[0077] In one possible implementation, the communication mode belongs to a set of communication modes, which includes at least a first communication mode.

[0078] In one example, the communication mode corresponding to the first communication node can be determined based on the type of the first communication node.

[0079] For example, if only a first communication node of the first type exists, there is no need to determine the communication mode; the first communication mode can be used directly for communication. In this case, the first communication mode can be understood as the default communication mode. Here, the first communication node of the first type corresponds to the first communication mode.

[0080] It should be understood that at this time, the first communication node is the first communication node of the first type.

[0081] The following describes the communication mode corresponding to the first communication node when the communication mode set includes at least the first communication mode:

[0082] In some embodiments, predetermined parameters of the communication mode are determined according to at least one of the following:

[0083] Radio resource control (RRC) messages, media access control elements, and the first physical downlink control channel.

[0084] The predetermined parameters include first information on the method of determining the modulation and coding scheme (MCS), second information on the frequency domain resources occupied by the channel, and at least one item from the demodulation reference signal set to which the demodulation reference signal of the channel belongs.

[0085] In some embodiments, when the predetermined parameters include first information about the MCS, the second physical downlink control channel for scheduling the data channel does not include a bit field for determining the MCS; or, the second physical downlink control channel for scheduling the data channel includes an MCS adjustment amount.

[0086] The aforementioned MCS adjustment amount is relative to the adjustment amount of the MCS determined based on the first information of the MCS. That is, the aforementioned MCS adjustment amount can be determined based on the MCS determined based on the first information of the MCS. The first information of the MCS may include information used to determine the MCS, such as the MCS index, the table index of the MCS, and the MCS set to which the MCS belongs.

[0087] It should be noted that, for the first communication mode, since the time domain of the channel of the first communication node does not change rapidly, it is not necessary to notify the MCS used by the data channel in every data scheduling. In this case, the MCS can be notified through one of the following signaling methods: RRC, MAC-CE, or group PDCCH. The PDCCH for scheduling the data channel may not include the bit field for notifying the MCS, or the PDCCH for scheduling the data channel may only notify the relative adjustment amount of the MCS. The former can reduce signaling overhead, but the MCS in the first information of the MCS needs to be lower to ensure the transmission performance of multiple data channels. The latter, although it has a small signaling overhead, can make the MCS in the first information of the MCS more matched with the channel. When the MCS in the first information of the MCS does not match the actual channel, it can be adjusted through the PDCCH for scheduling the data channel.

[0088] In some embodiments, when the predetermined parameters include second information about the frequency domain resources occupied by the data channel, the second physical downlink control channel for scheduling the data channel does not include information related to the frequency domain resources. Alternatively, the second physical downlink control channel for scheduling the data channel includes at least one of the following: the number of physical resource blocks included in the frequency domain resources, and the location information of the frequency domain resources in the frequency domain resource set.

[0089] The second information of the frequency domain resources occupied by the data channel includes relevant information about the set of frequency domain resources to which the frequency domain resources belong.

[0090] It should be noted that, for the first communication mode, since the time-domain changes of the channel of the first communication node are not rapid, the changes of the preferred frequency domain resources of the channel are also not rapid. Therefore, the frequency domain resource set composed of the preferred frequency domain resources changes slowly, and it is not necessary to notify the frequency domain resource set information in every data scheduling. Therefore, one of the following signaling methods can be used to notify the frequency domain resource set (e.g., PRB set): RRC, MAC-CE, group PDCCH signaling. The frequency domain resource set is suitable for at least one of the following: data channel, control channel. When it is suitable for a control channel, such as a downlink control channel, the first communication node only detects PDCCH within the frequency domain resource set. For example, if the higher layer configures CORESET resources and also notifies the frequency domain resource set, the first communication node detects PDCCH in the frequency domain resources at the intersection of CORESET and this frequency domain resource set. That is, the first communication node only detects PDCCH in the frequency domain resources of CORESET that belong to this frequency domain resource set, and does not detect PDCCH in the frequency domain resources that belong to CORESET but not to this frequency domain resource set. Of course, to ensure robustness, especially when this frequency domain resource set is a group PDCCH signaling, each CORESET, CORESET group, search space, or search space set can be configured to determine whether PDCCH detection should be based on the frequency domain resource set. This allows for configuration where some CORESETs, CORESET groups, search spaces, or search space sets are not configured to determine PDCCH detection based on the frequency domain resource set. Alternatively, frequency domain resource sets suitable for different channels can be separately notified; for example, the frequency domain resource set suitable for downlink data channels can be designated as the first frequency domain resource set, and the frequency domain resource set suitable for downlink control channels can also be designated as the second frequency domain resource set, because different channels have different performance requirements.

[0091] In one example, signaling notification of a frequency domain resource set (such as a PRB set) can be made using one of the following: RRC, MAC-CE, or group PDCCH signaling.

[0092] For the first communication mode, the PRB resources occupied by the data channel remain unchanged for a period of time. The PDCCH scheduling the data channel does not include PRB resource scheduling information. This reduces signaling overhead, but also results in multiple data channels occupying the same frequency domain resources, causing scheduling limitations and resource waste. Alternatively, the change may only involve a change in the number of PRBs. By sorting the PRBs in the frequency domain resource set according to agreed rules and / or signaling rules, the PDCCH scheduling the data channel only notifies the number of PRBs occupied by the data channel. This allows the PRB set occupied by the data channel to be determined as the number of PRBs extracted from the sorted PRB sequence. Alternatively, the PDCCH scheduling the data channel selects one or more frequency domain resources from the frequency domain resource set. That is, the second physical downlink control channel scheduling the data channel includes at least one of the following: the number of physical resource blocks included in the frequency domain resources, and the location information of the frequency domain resources in the frequency domain resource set. Compared to the scheme where the PDCCH of the data channel does not include scheduling information for PRB resources, the PDCCH load increases, but scheduling flexibility is increased. This allows the base station to schedule the set of frequency domain resources occupied by the data channel in the set of frequency domain resources according to service requirements, achieving a trade-off between signaling and performance.

[0093] In some embodiments, the frequency domain resource blocks in the bandwidth part (BWP) are non-contiguous.

[0094] In the first communication mode, the channel characteristics of the first communication node change slowly, resulting in slow changes in the preferred frequency domain resources in the wireless link. Furthermore, the set of frequency domain resources comprised of these preferred resources includes non-contiguous frequency domain resources. Therefore, non-contiguous bandwidth configuration can be employed to reduce the processing and measurement complexity of the first communication node, thereby reducing its power consumption.

[0095] For example, discontinuous BWPs can also be dynamically scheduled or negotiated through protocols, enabling the first communication node to switch between different BWPs to adapt to its real-time communication needs, thereby better managing wireless resources and improving overall network performance.

[0096] In some embodiments, a data channel is scheduled by multiple physical downlink control channels (PDCCHs).

[0097] For example, multiple PDCCHs satisfy at least one of the following:

[0098] The scheduling information for the data channel is determined based on multiple PDCCHs;

[0099] Multiple PDCCHs are used to schedule multiple data channels; each of the multiple data channels is determined based on at least two of the multiple PDCCHs.

[0100] Different PDCCHs among multiple PDCCHs differ in at least one parameter.

[0101] In some embodiments, the plurality of PDCCHs includes at least a first PDCCH and a second PDCCH, wherein the first PDCCH and the second PDCCH satisfy at least one of the following:

[0102] One first PDCCH corresponds to one or more second PDCCHs, and a data channel is scheduled by one first PDCCH and one second PDCCH.

[0103] The validity period of the information in the first PDCCH is different from that of the information in the second PDCCH;

[0104] The resources occupied by the second PDCCH are determined based on the first PDCCH;

[0105] The information in the first PDCCH applies to the data channels in the first data channel set, and the information in the second PDCCH applies to the data channels in the second data channel set; wherein, the first data channel set includes one or more data channels, and the second data channel set includes one or more data channels;

[0106] The first PDCCH and the second PDCCH each include a first set of information and a second set of information from the same data channel; wherein at least one piece of information differs between the first set of information and the second set of information.

[0107] In some embodiments, the above data channel satisfies at least one of the following:

[0108] There is at least one different data channel between the data channels in the first data channel set and the data channels in the second data channel set;

[0109] The data channels in the second data channel set belong to the first data channel;

[0110] The first set of information in the data channel includes at least one of the following: frequency domain resource set, MCS, demodulation reference signal DMRS port set, and transmission configuration indication TCI;

[0111] The second set of information in the data channel includes: indication information for selecting one or more frequency domain resources from the set of frequency domain resources notified in the first PDCCH; time domain resources where the data channel is located; adjustment amount of the MCS of the data channel relative to the MCS notified in the first PDCCH; selection information for selecting one or more DMRS ports from the set of DMRS ports notified in the first PDCCH; DMRS information of the multi-user MU; rate matching information; power control information; and at least one of the following: indication information for whether the predetermined resources include the data channel.

[0112] For example, in the first communication mode, the channel characteristics of the first communication node change very slowly, so the change rate of some information is not required, such as the first group of information, but the change rate of some information needs to be higher, such as the second group of information. Therefore, the information is divided into multiple groups, and the change rate of different groups is different.

[0113] In some embodiments, the PDCCH used for scheduling data channels does not include power control information.

[0114] For example, in the first communication mode, the channel characteristics of the first communication node change very slowly, so the PDCCH of the scheduling data channel does not include power control information.

[0115] In some embodiments, HARQ-ACK information corresponding to a Hybrid Automatic Repeat Request for multiple downlink data channels is sent; wherein different downlink data channels among the multiple downlink data channels occupy different resources, including time-domain resources and / or frequency-domain resources.

[0116] In some embodiments, a single HARQ-ACK message corresponding to multiple downlink data channels is used to indicate whether there is a negative NACK message among the multiple HARQ-ACK messages of the multiple downlink data channels; and / or, a single HARQ-ACK message corresponding to multiple downlink data channels is information determined by a preset calculation method for the multiple HARQ-ACK results of the multiple downlink data channels.

[0117] For example, the above-mentioned preset operation method may include multiplication operation or other possible operations. Taking multiplication as an example, the HARQ-ACK information corresponding to multiple downlink data channels is the product information of multiple HARQ-ACK results of multiple downlink data channels. Preferably, the multiplication result can also be called modulo 2 multiplication.

[0118] For example, for the first communication node of the first type, since the time-domain changes of the channel are relatively slow, it is not necessary to feed back HARQ-ACK for each data transmission separately. Instead, for multiple data channels within a certain period of time, only one HARQ-ACK needs to be fed back. As shown in Figure 3, PDSCH1 to PDSCH4 can correspond to only one HARQ-ACK message. The HARQ-ACK message is used to indicate whether there is a PDSCH with a HARQ-ACK result of NACK among PDSCH1 to PDSCH4. For example, the HARQ-ACK message is the multiplication of HARQ-ACK result 1 of PDSCH1, HARQ-ACK result 2 of PDSCH2, HARQ-ACK result 3 of PDSCH3, and HARQ-ACK result 4 of PDSCH4. If any PDSCH with a HARQ-ACK message of NACK is among PDSCH1 to PDSCH4, the multiplication result is 0; otherwise, the result is 1. The value 0 in the HARQ-ACK result represents NACK, and the value 1 represents ACK.

[0119] In one example, when the value of the HARQ-ACK information obtained above is NACK, the first communication node sends a signal to the second communication node, and the second communication node knows that at least one of PDSCH1 to PDSCH4 has failed to be received.

[0120] Furthermore, when the value of the HARQ-ACK information is NACK, the first communication node can further report which PDSCH among PDSCH1 to PDSCH4 has a HARQ-ACK information of NACK.

[0121] For example, a bitmap method can be used to report indication information of PDSCHs with a HARQ-ACK result of NACK, or to report the number N of PDSCHs that have experienced NACK, and to report which PDSCH's HARQ-ACK information is obtained by selecting N numbers from four numbers. For example, the multiple PDSCHs (PDSCH1 to PDSCH4) in Figure 3 are scheduled by a two-level DCI, and the DMRS of the multiple PDSCHs are shared. For instance, the DMRS of all PDSCHs in Figure 3 references the DMRS of the first PDSCH. For example, for a scheme where multiple PDSCHs correspond to one set of HARQ-ACK information, there are no restrictions on the scheduling method and DMRS of the multiple PDSCHs, as shown in Figure 4. Preferably, the multiple PDSCHs in Figure 4 are associated with at least one of the following: frequency domain bandwidth (e.g., BWP or CC), CORESET group, and quasi-co-address parameters. If multiple PDSCHs fall within a predetermined time window (e.g., the time span of the multiple PDSCHs does not exceed a predetermined value), the base station can notify the first communication node of the information of the multiple PDSCHs via signaling, so that the first communication node knows which PDSCHs it obtained the HARQ-ACK information from. This is because the physical channel characteristics experienced by PDSCHs from different frequency domain bandwidths, different TRPs, or different quasi-co-address parameters are different. Different TRPs are associated with different CORESET groups. The HARQ-ACK information in Figures 3 and 4 is obtained by performing the preset calculation on the HARQ-ACK results of the multiple PDSCHs shown in the figure, for example, it is the product of the HARQ-ACK results of the multiple PDSCHs.

[0122] For example, when the corresponding HARQ-ACK information for multiple downlink data channels is NACK, the first communication node sends second information to the second communication node. The second information includes at least one of the following: NACK information; indication information for indicating multiple downlink data channels, wherein the HARQ-ACK result of the multiple downlink data channels is NACK.

[0123] In some embodiments, when a single HARQ-ACK message corresponding to multiple PDSCHs is NACK, the first communication node may send the HARQ-ACK message using at least one of the following methods:

[0124] Method 1: The first communication node sends the following two pieces of information to the second communication node: Information 1: The HARQ-ACK information corresponding to this PDSCH is NACK. Information 2: Which PDSCH among the multiple PDSCHs has a NACK HARQ-ACK.

[0125] Among them, the time-frequency resources where Information 1 and Information 2 are located are related.

[0126] For example, the two pieces of information can be fed back in the same time unit or the same channel. In some embodiments, at least the two pieces of information are encoded independently, so that the receiver will only detect the second piece of information when it receives the first piece of information. Alternatively, information one can be sent first, which is equivalent to a resource request. After receiving information one, the second communication node schedules resources for the first communication node, and the first communication node sends information two on the resources scheduled by the second communication node.

[0127] Method 2: When multiple PDSCHs correspond to the same HARQ-ACK message and are NACK, the first communication node directly sends message 2 and does not send message 1.

[0128] The aforementioned second information includes at least one of information one and information two.

[0129] In some embodiments, the plurality of downlink data channels satisfy at least one of the following:

[0130] The resources occupied by multiple downlink data channels belong to the same frequency domain bandwidth or the same frequency domain bandwidth group;

[0131] The downlink control channels used to schedule multiple downlink data channels belong to the same downlink control channel group;

[0132] Multiple downlink data channels are associated with the same quasi-co-address parameters; or

[0133] The plurality of downlink data channels include different downlink data, and each of the plurality of downlink data channels corresponds to a HARQ-ACK result;

[0134] Multiple downlink data channels are located within a predetermined resource window;

[0135] HARQ-ACK for multiple downlink data channels needs to be fed back in the same time unit or in the same channel.

[0136] In some embodiments, for the same HARQ process within the same serving cell, the first communication node receives the second PDSCH before the HARQ-ACK feedback time of the scheduled first PDSCH.

[0137] For example, for the same process ID within a serving cell, another PDSCH will only be received after the HARQ-ACK of the already scheduled PDSCH has been received. This restriction can also be broken for the first communication node of the first type. That is, for the first communication node of the first communication mode, for the same process ID within the same serving cell, another PDSCH can be received even before the HARQ-ACK of the already scheduled PDSCH has been received. This is because the channel characteristics are relatively stable for the first communication node in the first communication mode, and the PDSCH is likely to be sent successfully. Furthermore, the first communication node may not even need to send HARQ-ACK information for some PDSCHs, thus breaking the aforementioned restriction.

[0138] In some embodiments, the first communication node may determine an uplink frequency domain bandwidth. It then determines multiple downlink frequency domain bandwidth groups corresponding to the uplink frequency domain bandwidth; wherein, if HARQ-ACK information for the channel on each downlink frequency domain bandwidth in the multiple downlink frequency domain bandwidth groups is fed back, it is fed back in the aforementioned uplink frequency domain bandwidth. Furthermore, the first communication node determines one or more frequency domain bandwidth groups among the multiple downlink frequency domain bandwidth groups. The first communication node feeds back one or more HARQ-ACK codewords corresponding to the determined one or more frequency domain bandwidth groups to the second communication node on an uplink frequency domain bandwidth.

[0139] In this context, each frequency domain bandwidth group in one or more frequency domain bandwidth groups corresponds to one HARQ-ACK codeword in one or more HARQ-ACK codewords.

[0140] For example, the first communication node feeding back one or more HARQ-ACK codewords corresponding to one or more frequency domain bandwidth groups to the second communication node over an uplink frequency domain bandwidth can be specifically implemented as follows:

[0141] The first communication node feeds back one or more HARQ-ACK codewords to the second communication node in one time unit and / or one channel on one uplink frequency domain bandwidth; wherein, the one or more HARQ-ACK codewords correspond to one or more frequency domain bandwidth groups, and the one or more frequency domain bandwidth groups are determined according to at least one of the following: the one time unit or the one channel. For each time unit or each channel that needs to feed back HARQ-ACK information, one or more frequency domain bandwidth groups corresponding to that time unit or that channel are determined respectively, and the first communication node feeds back the determined one or more frequency domain bandwidth groups, wherein different time units or different channels may have different corresponding one or more frequency domain bandwidth groups, thereby serving as on-demand transmission of HARQ-ACK information. As shown in Figure 10, please refer to the description of Figure 10 below.

[0142] For example, for the first communication node of the first type, another way of feedback HARQ-ACK is when at least one of the following information of the data channel changes or after the HARQ-ACK feedback timer expires: frequency domain resource set, quasi-co-address parameters and DMRS scheduling information, for a PDSCH, feedback of its HARQ-ACK information, and for multiple subsequent PDSCHs, only one HARQ-ACK information can be fed back.

[0143] As shown in Figure 5, at time t1, HARQ-ACK for PDSCH1 is fed back, and at time t2, HARQ-ACK information corresponding to PDSCH2 to 4 is fed back. For example, this HARQ-ACK information is the product of the HARQ-ACK results of these multiple PDSCHs. Since one or more of the MCS, frequency domain resource set, quasi-co-location parameters, or DMRS of PDSCH1 have changed significantly compared to the previous PDSCHs, the channel of the first communication node in the first communication mode has changed significantly, and the scheduling of the MCS is still unstable. Therefore, the first communication node of the first type needs to use timely HARQ-ACK feedback for PDSCH1. For PDSCH2, 3, and 4, since there are no significant changes between the channel and PDSCH1, feedback can be provided by using one HARQ-ACK information corresponding to multiple PDSCHs. Alternatively, based on the type in the PDCCH that schedules the PDSCH, or the information notified in the PDCCH, it can be determined whether to send HARQ-ACK information separately for each PDSCH, or to send a single HARQ-ACK message for multiple PDSCHs, such as sending the product of the HARQ-ACK messages for these multiple PDSCHs. In one implementation, after the terminal sends HARQ-ACK information for one PDSCH, the terminal starts a HARQ-ACK timer. When this timer expires, the terminal can send HARQ-ACK information for each PDSCH. After sending the information, the timer restarts. Preferably, each frequency domain bandwidth and CORESET group corresponds to one HARQ-ACK message.

[0144] As shown in Figure 6, for the first communication node in the second communication mode, due to the rapid changes in the channel, each of the multiple PDSCHs has its own HARQ-ACK information. Although the HARQ-ACK results of PDSCH1~PDSCH2 (or PDSCH3~PDSCH4) in Figure 6 are fed back in the same time unit or the same channel, their results are not subject to preset calculations; they are independent. The base station can obtain their HARQ-ACK results separately and determine which one of them has experienced a NACK.

[0145] In some embodiments, when the first communication node is determined to be a first communication node in a second communication mode, the first communication node reports multiple HARQ-ACK messages for multiple downlink data channels;

[0146] In this context, each of the multiple downlink data channels corresponds to one of the multiple HARQ-ACK messages; and / or, for the same HARQ process within the same serving cell, the first communication node receives the second PDSCH at a time no earlier than the feedback time of the HARQ-ACK of the scheduled first PDSCH.

[0147] In another possible implementation, the set of communication modes includes at least a first communication mode and a second communication mode.

[0148] The following describes the communication mode corresponding to the first communication node when the communication mode set includes at least the first communication mode and the second communication mode:

[0149] In one example, the communication mode corresponding to the first communication node can be determined based on the type of the first communication node.

[0150] For example, the type of the first communication node includes at least one of a first type and a second type.

[0151] In some embodiments, the first communication node of the first type provided in this disclosure has a moving speed less than or equal to a first speed threshold, and the first communication node of the second type has a moving speed greater than or equal to a second speed threshold.

[0152] For example, the first type and the second type can differ in their movement speed. For example, the first communication node of the first type can be a first communication node whose channel changes are insignificant and negligible over a certain period, such as a first communication node with a fixed location or a first communication node with a very slow movement speed. The second communication node of the second type, however, is a communication node whose channel changes are not negligible over a certain period, such as a node with a high movement speed or a large movement distance over a certain period. In this case, the movement speed of the first communication node is not negligible during communication, and the impact of this movement speed on communication needs to be considered. It should be understood that the first speed threshold can be less than the second speed threshold.

[0153] In some embodiments, the communication mode can also be determined based on the type of the first communication node.

[0154] For example, if the first communication node is of type 1, the determined communication mode can be the first communication mode. As another example, if the first communication node is of type 2, the determined communication mode can be the second communication mode. Here, the first communication node of type 1 corresponds to the first communication mode, and the first communication node of type 2 corresponds to the second communication mode.

[0155] It should be understood that the first and second types described above are merely illustrative examples. For instance, there may be more or fewer types, such as including only the first type, or including a third type, etc. Furthermore, there may be other possible names for the types, such as naming the first type as the low-speed type, and the second type as the high-speed type, etc. This disclosure does not specifically limit these possibilities.

[0156] This allows for different communication modes to be provided for different primary communication nodes (e.g., terminals with different movement speeds). Based on the characteristics of each primary communication node, a communication mode more adapted to those characteristics can be offered, thereby improving the flexibility and reliability of the communication method. Furthermore, by providing a more adaptable communication mode, the communication quality between communication nodes can be improved, communication resources can be fully utilized, and communication costs can be reduced.

[0157] It should be noted that different types of first communication nodes require different communication modes. Taking the example of a first type of first communication node whose moving speed is less than or equal to a first speed threshold, and a second type of first communication node whose moving speed is greater than or equal to a second speed threshold:

[0158] When the spatial beam changes, the wireless channel changes. If the spatial beam in the environment remains unchanged, the channel's variation characteristics depend on the distance traveled. Therefore, the wireless channel of a first type of communication node (e.g., a fixed-location device) can be considered constant over a period of time. However, for a second type of communication node (e.g., a mobile wireless communication device), even if the spatial beam remains unchanged, the weighting values ​​of multiple spatial beams change over time, resulting in different channels at different times. The weighting values ​​are a function of velocity; the faster the movement, the faster the channel changes. For fixed-location or low-mobility devices, the weighting values ​​of multiple beams change with the spatial beam; if the spatial beam remains unchanged, the weighting values ​​do not change. Furthermore, the period of change in the spatial beam is much longer than the period of change in the weighting values ​​of multiple spatial beams.

[0159] The channel H(t) can be represented by the following formula (1):

[0160] Where H(t) is a matrix with Rx rows and Tx columns, Rx is the number of receiving antennas at the receiver, and Tx is the number of transmitting antennas at the transmitter. is the weighted value of the i-th physical propagation path, is the receiving direction vector, is the transmitting direction vector. Among them, T1 is the transformation period of the weighted value, and T2 is the change period of the spatial domain beam.

[0161] It should be noted that in the actual application scenario, can also be replaced by a i (t), can also be replaced by U i (t), can also be replaced by Here, T1 is used to represent the period of the non-negligible change of a i For example, within the length of a period T1, although a i (t) is changing, the change is very small, then a i (t) can be regarded as a value. However, between different T1 period lengths, a i (t) cannot be regarded as a value and needs to be regarded as two different values.

[0162] For the first communication node of the second type, T1 < T2. At this time, the change period of H(t) depends on T1. For the first communication node of the first type, T1 = T2. Therefore, based on the above formula (1), for the first communication node of the second type, the change period of H(t) can be T1. T2 is much larger than T1. For the first communication node of the first type, the change period of H(t) is T2. The change period of the first communication node of the first type is much larger than that of the first communication node of the second type, and, compared with the second type, the communication environment of the first communication node of the first type changes more slowly (compared with the first communication node of the second type), that is, T2 is also longer. For example, for a mobile terminal (belonging to the first communication node of the second type), T1 = 5ms, T2 = 20ms, and the change period of H(t) is 5ms. For a terminal with a fixed position or low-speed movement (belonging to the first communication node of the first type), T1 = T2 = 100ms, and the change period of H(t) is 100ms.

[0163] It can be seen that different communication modes should be adopted for the first communication node of the first type and the first communication node of the second type.

[0164] In some embodiments, there are differences between the first communication mode and the second communication mode in at least one of the following aspects:

[0165] Channel state information related parameters, the method for determining the modulation and coding scheme (MCS), the method for determining the frequency domain resources occupied by the data channel, the characteristics of the set of frequency domain resources included in the bandwidth part (BWP), the scheduling method of the physical downlink control channel, the power control method, the method for sending hybrid automatic repeat request-acknowledge (HARQ-ACK) information, the reporting method of mobility measurement, the paging method, the method for handling measurement gaps, the method for determining the timing advance, the parameters of the downlink synchronization signal, the positioning-related parameters, and the parameters related to the cyclic prefix (CP) length.

[0166] In some embodiments, the parameters described above may be different for first communication nodes employing different communication modes (e.g., a first type of first communication node and a second type of communication node), and the parameters can be determined separately. And / or, it is necessary to determine separately the set of possible values ​​for the parameters.

[0167] The following provides a detailed explanation of each of the above parameters:

[0168] 1. Channel State Information Related Parameters

[0169] For example, the channel state information related parameters include at least one of the following:

[0170] The parameters related to the components of channel state information, the capability information related to the channel state information of the first communication node, the parameters related to the measurement reference signal, and the parameters related to the reporting method of channel state information.

[0171] That is, compared with the first communication node of the second type, the first communication node of the first type satisfies at least one of the following: the parameters related to the measurement reference signal are different, the parameters related to the reporting method of channel state information are different, the parameters related to the composition of channel state information are different, or the capability information related to the channel state information of the first communication node is different.

[0172] 1.1 Components and related parameters of channel state information

[0173] In some embodiments, the parameters related to the components of the channel state information include at least one of the following: the possible values ​​of the number of spatial basis vectors that make up the precoding vector, the oversampling factor, the composition of the precoding vector, and the representation of the spatial basis vectors.

[0174] Regarding the possible values ​​of the number of spatial basis vectors that make up the precoding vector: the maximum possible value of the number of spatial basis vectors that make up the precoding vector of the first communication node of the first type is greater than the maximum possible value of the number of spatial basis vectors that make up the precoding vector of the first communication node of the second type.

[0175] For example, the number of spatial basis vectors constituting the precoding vector can be different for a first communication node of the first type compared to a first communication node of the second type, and can be determined separately. The possible values ​​for the number of spatial basis vectors constituting the precoding vector can include a set of candidate values ​​for the number of spatial basis vectors in the EtypeII codebook.

[0176] In one example, for the first communication node of the first type, its relatively fixed physical location allows for a finer beam and higher accuracy when transmitted to it. For instance, in near-field or distributed multiple input multiple output (MIMO) communication scenarios, the beam can be focused onto a specific point on the first communication node. Therefore, beam reporting can be more accurate for the first communication node of the first type. For example, when using the Etype II codebook reporting method, the maximum value of the number L of spatial basis vectors constituting the precoding vector W is greater than that of the first communication node of the second type.

[0177] For example, the precoding vector W can be represented by the following formula (2):

[0178] Among them, V i Let a be a spatial basis vector. i,q Let L be the weighting value of the i-th spatial basis vector on the q-th polarization, L be the number of spatial basis vectors that make up the precoding vector (e.g., the number of spatial basis vectors included in Etype II), and W be the precoding vector corresponding to a data layer.

[0179] Regarding the oversampling factor mentioned above: the oversampling factor of the first communication node of the first type is greater than the oversampling factor of the first communication node of the second type; or, the maximum possible value of the oversampling factor of the first communication node of the first type is greater than the maximum possible value of the oversampling factor of the first communication node of the second type.

[0180] For example, the oversampling factor of the first communication node of the first type may be different from that of the first communication node of the second type.

[0181] Taking the determination method of Type I precoding vector as an example, the precoding vector can be in the form shown in formula (3). Each precoding vector is not composed of the sum of multiple spatial basis vectors, but is composed of a single spatial basis vector.

[0182] in, It is an N1-dimensional direction vector in the horizontal direction. It is an N2-dimensional direction vector in the vertical direction. yes and The Kronecker product. And, The n1th element satisfies the following formula (4):

[0183] Where n1 = 0, 1, ..., N1-1; k 1,i ∈{0,1,....N1-1}.

[0184] The n2th element satisfies the following formula (5):

[0185] Where n2 = 0, 1, ..., N2-1; k 2,i ∈{0,1,....N2-1}.

[0186] It should be noted that for the first type of communication node, because its physical location is relatively fixed, the beam transmitted to the first communication node can be thinner and more accurate. Therefore, the oversampling factors O1 and O2 can be larger than those for the second type of first communication node.

[0187] Regarding the configuration of the precoding vector, the configuration of the precoding vector of the first type of first communication node does not include the time-domain basis vector; and / or, the configuration of the precoding vector of the second type of first communication node is determined according to signaling information or predetermined rules, whether it includes or does not include the time-domain basis vector.

[0188] For example, the precoding vector of the first communication node of the first type may not include time-domain basis vector information, while the precoding vector of the first communication node of the second type may or may not include time-domain basis vector information.

[0189] It should be noted that since the time-domain basis vectors reflect the Doppler frequency shift, for the first type of communication node, based on its movement speed, the Doppler frequency shift can be considered to be 0 or close to 0, so the precoding vector does not need to include the time-domain basis vectors. However, for the second type of communication node, its Doppler frequency shift is not 0. Considering the complexity and movement speed of the first communication node, the precoding vector may or may not include the time-domain basis vectors. For example, including the time-domain basis vectors results in more accurate channel state information feedback for the first communication node, but the complexity of precoding search and reporting is higher. Alternatively, it could be the length of a time-domain unit corresponding to an element in the time-domain basis vector of the first type of communication node, which is longer than the length of a time-domain unit corresponding to an element in the time-domain basis vector of the second type of communication node. For example, for the two types of first communication nodes, the set to which the time-domain length corresponding to an element of the time-domain basis vector belongs is determined. For instance, for the first type of first communication node, the length of its time-domain unit belongs to set 1, and for the second type of first communication node, the length of its time-domain unit belongs to set 2. Sets 1 and 2 need to be determined separately. Set 1 and / or set 2 include one or more elements.

[0190] 1.2 Parameters related to the channel state information reporting method

[0191] In some embodiments, the parameters related to the reporting method of the above-mentioned channel state information include at least one of the following:

[0192] The reporting method of channel state information, the reporting period of channel state information, the possible values ​​of the reporting period of channel state information, and the possible values ​​of the number of channel state information reference signal resources included in the channel state information reference signal resource group.

[0193] Regarding the reporting method of channel state information: the first type of first communication node reports channel state information in an explicit reporting method, and / or the second type of first communication node reports channel state information in a precoded vector method.

[0194] Regarding the possible values ​​for the channel state information reporting period, for example, the maximum value of the channel state information reporting period for a first type of first communication node can also be greater than the maximum value of the reporting period for a second type of first communication node. For example, for a first type of first communication node, the set of possible candidate values ​​for the channel state information reporting period is set 1; for a second type of first communication node, the set of possible candidate values ​​for the channel state information reporting period is set 2. Set 1 and set 2 are different sets. Preferably, the maximum value in set 1 is greater than the maximum value in set 2.

[0195] It should be noted that for the first communication node of the first type, the channel's time-domain change rate is much lower than that of the first communication node of the second type. Therefore, the maximum value of the channel state information reporting period of the first communication node of the first type can also be greater than the maximum value of the reporting period of the first communication node of the second type.

[0196] Regarding the possible values ​​of the number of channel state information reference signal resources included in the channel state information reference signal resource group, the possible value of the number of channel state information reference signal resources included in the channel state information reference signal resource group of the first type of first communication node can be greater than the possible value of the number of channel state information reference signal resources included in the channel state information reference signal resource group of the second type of first communication node.

[0197] For example, for the first type of communication node, the spatial deep fading problem is not severe in distributed communication. Therefore, in distributed MIMO communication, the number of access points (APs) that can simultaneously serve a communication node can be greater. For instance, during beam training, the maximum number of CSI-RS resources selected from a Channel State Information-Reference Signal (CSI-RS) resource group can be larger than that of the first type of communication node. Alternatively, during the Joint Transmission (CJT) codebook feedback process, the maximum number of CSI-RS resources corresponding to a precoding vector can be larger. Different CSI-RS resource group configuration strategies can be designed for the two types of communication nodes. The selection of resource groups may be based on whether they are suitable for the terminal's channel conditions, such as high channel quality, good multipath propagation characteristics, or corresponding to the same transmitted data. The design of precoding vectors also depends on the characteristics of these resources; for example, the number of elements will take into account the number of CSI-RS ports in the resource group. Furthermore, based on spatial depth fading, when the same group of APs sends data to a first communication node using a fixed precoding, a slight movement of the first communication node's location can lead to a significant change in reception performance. Therefore, the number of APs corresponding to different types of terminals can be different. Different APs are distinguished by different CSI-RS resources, and a CSI-RS resource includes one or more CSI-RS ports.

[0198] The possible values ​​for the number of channel state information reference signal resources included in the channel state information reference signal resource group can be a set of possible candidate values ​​for the number of CSI-RS resources included in the CSI-RS resource group. This set needs to be determined for the first communication node of the first type and the first communication node of the second type, respectively.

[0199] In some embodiments, the channel state information reference signal resources included in a channel state information reference signal resource group satisfy at least one of the following:

[0200] All channel state information reference signal resources included in the channel state information reference signal resource group can be received simultaneously by the first communication node;

[0201] The Doppler spread values ​​of the channel state information reference signal resources included in the channel state information reference signal resource group are within the preset Doppler spread value range;

[0202] The delay spread value of the channel state information reference signal resources included in the channel state information reference signal resource group is within the preset delay value range;

[0203] The sum of the channels of the different channel state information reference signal resources included in the channel state information reference signal resource group satisfies the preset summation channel requirements;

[0204] The channel state information reference signal resources included in the channel state information reference signal resource group correspond to the same data layer;

[0205] A precoding vector is determined based on the channel state information reference signal resources included in the channel state information reference signal resource group.

[0206] For example, the CSI-RS resources in the above-mentioned CSI-RS resource group also need to meet predetermined characteristics, such as:

[0207] Simultaneous reception: CSI-RS resources in a CSI-RS resource group should be able to be received simultaneously by the communication nodes.

[0208] Doppler spread and delay spread: The Doppler spread of CSI-RS resources in a CSI-RS resource group meets predetermined characteristics, such as being less than a predetermined value; the delay spread of CSI-RS resources in a CSI-RS resource group meets predetermined characteristics, such as being less than a predetermined value.

[0209] Sum of channel characteristics: The sum of channels of different CSI-RS resources in a CSI-RS resource group meets predetermined characteristics, such as the channel quality information of the sum of channels of all CSI-RS resources in a CSI-RS resource group reported by the first communication node.

[0210] Data layer correspondence: CSI-RS resources in a CSI-RS resource group should correspond to the same data layer to ensure the consistency and reliability of data transmission.

[0211] Precoding Vector: The design of the precoding vector should be based on the CSI-RS resources in a CSI-RS resource group. For example, the number of elements in the precoding vector can be determined based on the total number of CSI-RS ports in a CSI-RS resource group.

[0212] 1.3 Measure parameters related to the reference signal

[0213] In some embodiments, the parameters related to the measurement reference signal include at least one of the following:

[0214] The time-domain period of the measurement reference signal, the possible values ​​of the time-domain period of the measurement reference signal, and the parameters of the measurement resources used for interference measurement.

[0215] For example, for a first communication node of the first type, the set of configurable candidate values ​​for the transmission period of the measurement reference signal is set 1; for a first communication node of the second type, the set of configurable candidate values ​​for the transmission period of the measurement reference signal is set 2. Set 1 and set 2 are different sets. Preferably, the maximum value in set 1 is greater than the maximum value in set 2.

[0216] In some embodiments, the time-domain period of the measurement reference signal for channel measurement of the first communication node of the first type is the same as or different from the time-domain period of the measurement resource for interference measurement; and / or, the time-domain period of the measurement reference signal for channel measurement of the second type of first communication node is the same as the time-domain period of the measurement resource for interference measurement.

[0217] For example, the parameter constraint rules for different types of first communication nodes can be different. For instance, for a first type of first communication node, the period of the measurement reference signal used for target channel measurement and the period of the measurement reference signal or reference resource used for interference measurement can be different. However, for a second type of first communication node, the period of the measurement reference signal used for target channel measurement and the period of the measurement reference signal or reference resource used for interference measurement must be the same. The measurement reference signal used for interference measurement includes a non-zero power Channel State Information-Reference Signal (NZP-CSI-RS) used for interference measurement, and the reference resource used for interference measurement includes Channel State Information Interference Measurement (CSI-IM) resources. That is, only the time-frequency resources used for interference measurement are specified; the received power on these time-frequency resources is the received power of the interference signal. The reference signal used for interference measurement is not notified on these time-frequency resources, i.e., the code domain resources used for interference measurement are not notified.

[0218] 1.4 Capability information related to the channel state information of the first communication node

[0219] In some embodiments, the set of possible candidate values ​​for the capability value of the first communication node of the first type is different from the set of possible candidate values ​​for the capability value of the first communication node of the second type.

[0220] For example, because the quantization complexity of a first type of first communication node differs due to its need to calculate and report more precise precoding information or to explicitly report the channel, the time-domain distance from the end position of the PDCCH indicating the reporting of channel state information to the reporting of channel state information must be greater than or equal to the first capability value reported by the first communication node. The set of possible candidate values ​​for this first capability value of the first communication node can be different for different types of first communication nodes. And / or the time-domain distance from the CSI reference resource to the reporting of channel state information must be greater than or equal to the second capability value reported by the first communication node. The set of possible candidate values ​​for this second capability value of the first communication node can also be different for different types of first communication nodes.

[0221] It should be understood that the above capability information is merely an illustrative example. For a first communication node with mobility capabilities, two sets of capability information can be reported, corresponding to its different states. For example, if the first communication node is in a state where channel characteristics do not change significantly, its capability information is the first set of capability information; if the first communication node is in a state where channel characteristics change significantly, its capability information is the second set of capability information. The first and second sets of capability information may include multiple values ​​for the same type of capability.

[0222] In some embodiments, when the first communication node is in a first type of first communication node state with a fixed position or a very low speed, that is, the first type, its capability information can be a first set; when it is in a mobile state, that is, the second type, its capability information is a second set.

[0223] Furthermore, the above example divides the speed of the first communication node into two categories. Of course, the speed of the first communication node can also be divided into more than two categories, each corresponding to different capability information. Here, we are talking about different movement speed states of the first communication node, corresponding to different capability information. This embodiment does not exclude the possibility that the capability information for other multiple states of the first communication node needs to be determined separately. For example, the first communication node may have two sets of capability information, corresponding to non-energy-saving mode and energy-saving mode respectively. The aforementioned capability information may include CSI-related capability information, or other capability information, such as transmission-related capability information.

[0224] 2. Method for determining MCS

[0225] In some embodiments, the MCS can be determined based on at least one of the following: Radio Resource Control (RRC) messages, Media Access Control (MAC) control elements, and the first physical downlink control channel.

[0226] For example, the predetermined parameters are determined by at least one of the following: Radio Resource Control (RRC) messages, Media Access Control (MAC) control elements, and the first physical downlink control channel. For instance, the predetermined parameters may include at least one of the following: first information about the MCS, second information about the frequency domain resources occupied by the data channel, and the demodulation reference signal set to which the demodulation reference signal of the data channel belongs. The method for determining the MCS can be determined by the first information about the MCS.

[0227] In some embodiments, where the predetermined parameters include first information about the MCS, the second physical downlink control channel for scheduling the data channel does not include a bit field for determining the MCS; or, the second physical downlink control channel for scheduling the data channel includes an MCS adjustment amount, which is an adjustment amount relative to the MCS determined according to the first information about the MCS.

[0228] In one example, for the first communication node of the first type, since the time domain of its channel does not change rapidly, it is not necessary to notify the MCS used by the data channel in every data scheduling. For example, the MCS is notified through one of the following signaling methods: RRC, MAC-CE, or group PDCCH. The PDCCH for scheduling the data channel may not include the bit field for notifying the MCS, or the PDCCH for scheduling the data channel may only notify the relative adjustment amount of the MCS.

[0229] In another example, for the first communication node of the second type, because the channel changes rapidly in the time domain, the scheduling information for each data channel includes MCS information, the same as the MCS determination method for the relevant NR. In the semi-persistent scheduling of the relevant protocol, the relevant information of the data channel remains unchanged after the PDCCH notification is activated.

[0230] In some embodiments, the information included in the PDCCH of the scheduling data channel can be divided into two parts: the first part is not included in the PDCCH of the scheduling data channel, and the second part is included in the PDCCH of the scheduling PDSCH. For example, the first part includes the MCS, and the second part includes the time domain resources occupied by the PDSCH.

[0231] 3. Method for determining the frequency domain resources occupied by the data channel

[0232] In some embodiments, the frequency domain resources occupied by the data channel can be determined based on at least one of the following: Radio Resource Control (RRC) messages, Media Access Control (MAC) control elements, and the first physical downlink control channel.

[0233] For example, the determination of the frequency domain resources occupied by the data channel can be determined by predetermined parameters, such as at least one of the following: first information of the MCS, second information of the frequency domain resources occupied by the data channel, and the demodulation reference signal set to which the demodulation reference signal of the data channel belongs. The determination of the frequency domain resources occupied by the data channel can be determined by the second information of the frequency domain resources occupied by the data channel, and the predetermined parameters can be determined based on at least one of the following: Radio Resource Control (RRC) messages, Media Access Control (MAC) control elements, and the first physical downlink control channel.

[0234] In some embodiments, when the predetermined parameters include second information about the frequency domain resources occupied by the data channel, the second physical downlink control channel for scheduling the data channel includes at least one of the following:

[0235] The number of Physical Resource Blocks (PRBs) included in the frequency domain resources; selection information for one or more frequency domain resources in the frequency domain resource set.

[0236] The second information of the frequency domain resources occupied by the data channel includes relevant information about the set of frequency domain resources to which the frequency domain resources belong, and the frequency domain resources include one or more frequency domain resources.

[0237] In one example, for the first communication node of the first type, since the time domain of the channel does not change rapidly, the preferred frequency domain resources of the channel also do not change rapidly. Therefore, it is not necessary to use completely different frequency domain resources in each data scheduling. For example, one of the following signaling methods can be used to notify the set of frequency domain resources (such as the PRB set): RRC, MAC-CE, group PDCCH signaling.

[0238] Furthermore, for the first communication node of the first type, the PRB resources occupied by the data channel remain unchanged for a period of time. The PDCCH scheduling the data channel does not include scheduling information for PRB resources, or the change is only in the number of PRBs, or the PDCCH scheduling the data channel only notifies the number of occupied PRBs. The PRBs in the frequency domain resource set are sorted according to agreed rules and / or signaling rules. The PDCCH scheduling the data channel only notifies the number of PRBs occupied by the data channel, thus determining that the set of PRBs occupied by the data channel is the number of PRBs extracted from the sorted PRB sequence. Alternatively, the PDCCH scheduling the data channel selects one or more frequency domain resources from the frequency domain resource set.

[0239] In some embodiments, the number of bits in the frequency domain resource bit field of the notification data channel in the scheduling data channel PDCCH can be determined based on the number of frequency domain resources included in the aforementioned frequency domain resource set.

[0240] It should be understood that in this embodiment, the frequency domain bandwidth is not determined based on the number of PRBs included in the active frequency domain bandwidth, such as the carrier component (CC) or the BWP, but rather on the number of frequency domain resources included in the frequency domain resource set. Furthermore, the frequency domain resource set to which the data channel's frequency domain resources belong may differ from the frequency domain resource set included in the BWP. For example, the frequency domain resource set may be a subset of the frequency domain resource set included in the BWP, and may include non-contiguous frequency domain resources within the frequency domain resource set included in the BWP. For instance, the frequency domain resource set to which the PRB resources occupied by the data channel belong may include a set of one or more PRBs that offer the best performance for the first communication node of the first type over a period of time; these PRBs may be contiguous or non-contiguous.

[0241] For the first communication node of the second type, the transmission timing of each data channel can be implemented by including the corresponding PDCCH scheduling, thereby notifying the frequency domain resource set of the current data channel transmission timing in the PDCCH. Because of different transmission timings, the preferred PRB set for the second type of terminal may change.

[0242] For the first communication node of the first type, the set of PRB resources occupied by the data channel can be determined by one of the following methods:

[0243] Option 1: The set of PRB resources occupied by the data channel is notified via RRC, MAC-CE, and group PDCCH signaling. The set of PRB resources occupied by the data channel may not be included in the PDCCH that schedules the data channel.

[0244] Scheme 2: The frequency domain resource set to which the PRB resources occupied by the data channel belong is notified via RRC, MAC-CE, and group PDCCH signaling. The number of PRBs occupied by the data channel is notified in the PDCCH that schedules the data channel, wherein the data channel occupies the number of PRBs in the frequency domain resource set.

[0245] Option 3: The frequency domain resource set to which the PRB resource occupied by the data channel belongs is notified via RRC, MAC-CE, and group PDCCH signaling. The location information of the PRB occupied by the data channel in the frequency domain resource set is notified in the PDCCH of the data channel.

[0246] For different types of first communication nodes, the set of PRBs included in their BWP differs. For the first type of first communication node, the set of PRBs included in its BWP includes non-contiguous PRBs, while for the second type of first communication node, the set of PRBs included in its BWP only includes contiguous PRBs. Because the channel change period is long for the first type of first communication node, a set of PRBs consisting of PRBs with relatively good channel conditions can be selected as the set of PRBs included in the BWP for a certain period. In this case, the aforementioned set of frequency domain resources is used as the set of PRBs included in the BWP, and channel measurements are not required on other PRBs for a certain period.

[0247] 4. Characteristics of the frequency domain resource set included in BWP

[0248] In some embodiments, the frequency domain resource blocks in the BWP of the first communication node of the first type are non-contiguous; and / or, the frequency domain resource blocks in the BWP of the second type of the first communication node are contiguous.

[0249] 5. Scheduling methods for the Physical Downlink Control Channel (PDCCH)

[0250] In one possible implementation, the scheduling method of the data channel of the first type of first communication node includes a continuous scheduling method and / or a scheduling method in which a data channel is scheduled by multiple physical downlink control channels (PDCCHs); and / or, the scheduling method of the data channel of the second type of first communication node includes a scheduling method in which a data channel is scheduled by one PDCCH.

[0251] In another possible implementation, for the first type of first communication node, semi-persistent scheduling (SPS) can be used to schedule the data channel. For the second type of first communication node, either semi-persistent scheduling or dynamic scheduling can be used.

[0252] It should be noted that the PDSCH parameters notified in an active semi-persistent scheduling PDCCH mentioned above only apply to the transmission of PDSCH within a certain period of time, and subsequent PDSCHs may not have corresponding PDCCH scheduling.

[0253] In another possible implementation, for the first communication node of the first type, a scheduling method using multiple PDCCHs can be adopted. For the first communication node of the second type, a scheduling method using a single PDCCH can be adopted.

[0254] In some embodiments, the scheduling information for the data channel can be determined based on multiple PDCCHs.

[0255] In the case of multiple PDCCHs, the multiple PDCCHs can satisfy at least one of the following:

[0256] The scheduling information for the data channel is determined based on multiple PDCCHs;

[0257] Multiple PDCCHs are used to schedule multiple data channels; each of the multiple data channels is determined based on at least two of the multiple PDCCHs.

[0258] Different PDCCHs among multiple PDCCHs differ in at least one parameter.

[0259] In some embodiments, the plurality of PDCCHs includes a first PDCCH and a second PDCCH, and the plurality of PDCCHs satisfy at least one of the following:

[0260] One first PDCCH corresponds to one or more second PDCCHs;

[0261] The validity period of the information in the first PDCCH is different from that of the information in the second PDCCH;

[0262] The resources occupied by the second PDCCH are determined based on the first PDCCH;

[0263] The information in the first PDCCH applies to the data channels in the first data channel set, and the information in the second PDCCH applies to the data channels in the second data channel set; wherein, the first data channel set includes one or more data channels, and the second data channel set includes one or more data channels;

[0264] The first PDCCH includes a first set of information for the same data channel, and the second PDCCH includes a second set of information for the same data channel; wherein at least one piece of information differs between the first set of information and the second set of information.

[0265] In some embodiments, the above data channel satisfies at least one of the following:

[0266] There is at least one different data channel between the data channels in the first data channel set and the data channels in the second data channel set;

[0267] The data channels in the second data channel set belong to the first data channel;

[0268] The first set of information in the data channel includes at least one of the following: frequency domain resource set, MCS, demodulation reference signal DMRS port set, and transmission configuration indication TCI;

[0269] The second set of information in the data channel includes: indication information for selecting one or more frequency domain resources from the set of frequency domain resources notified in the first PDCCH; time domain resources where the data channel is located; adjustment amount of the MCS of the data channel relative to the MCS notified in the first PDCCH; selection information for selecting one or more DMRS ports from the set of DMRS ports notified in the first PDCCH; DMRS information of the multi-user MU; rate matching information; power control information; and at least one of the following: indication information for whether the predetermined resources include the data channel.

[0270] For example, when a first communication node of the first type transmits data, a second communication node can transmit a basic PDCCH (referred to as PDCCH1, or first-level PDCCH). This PDCCH can be used to notify at least one of the following: frequency domain resource set, MCS, demodulation reference signal port (DMRS) port, transmission configuration indication (TCI), reserved time domain timing, measurement-related parameters, etc.

[0271] Furthermore, the second communication node can also notify at least one of the following information in the subsequent PDCCH (referred to as PDCCH2, i.e., the second-level PDCCH): select one or more frequency domain resources from the frequency domain resource set notified by PDCCH1, whether there is data, the time domain resource where the data is located, the adjustment amount of the data's MCS relative to the MCS notified by PDCCH1, select one or more DMRS ports from the DMRS port set notified by PDCCH1, DMRS information of multi-user MU users, rate matching information, power control information, or whether it is new data.

[0272] The following example illustrates the case where the first PDCCH is PDCCH1 and the second PDCCH is PDCCH2:

[0273] In one example, the load of PDCCH1 is greater than that of PDCCH2.

[0274] For example, PDCCH2 can be transmitted in the time-frequency resources indicated by PDCCH1, or it can be transmitted via a transmission sequence. The detection period of PDCCH1 is longer than the detection period of PDCCH2, or the detection period of PDCCH1 and PDCCH2 can be the same. Furthermore, the information notified in PDCCH1 remains valid unless PDCCH2 notifies that PDCCH1 needs to be re-detected (or a new PDCCH1 is detected). Otherwise, the terminal does not need to detect PDCCH1, or the period is the same, and the information notified in PDCCH1 remains valid unless a new PDCCH1 is detected.

[0275] In one example, there can be a relationship between MCS and TCI. MCS only needs to be changed when TCI changes, or the set of MCS only needs to be changed. Each TCI corresponds to a set of MCS.

[0276] In one example, one PDCCH1 can correspond to one or more PDCCH2s. The information notified by PDCCH1 remains valid throughout a detection period of PDCCH1, or remains valid until PDCCH1 is updated. For example, as shown in Figure 7, DCI1 is the notification information included in PDCCH1, and DCI2 is the notification information included in PDCCH2. The information in DCI1 is suitable for multiple PDSCHs, for example, it can be suitable for all PDSCHs in Figure 7, but the information in DCI2 is only suitable for one PDSCH. As shown in Figure 8, the information in DCI1 is suitable for multiple PDSCHs, for example, it can be suitable for all PDSCHs in Figure 8, and the information in DCI2 can also be suitable for multiple PDSCHs. In both Figures 7 and 8, one DCI1 corresponds to multiple DCI2s, meaning the information notified in DCI1 is suitable for the data channel scheduled by each of the multiple DCI2s.

[0277] For example, for the first communication node of the first type, the time domain of the channel does not change rapidly, so much scheduling information does not need to be dynamically changed. Therefore, the information notified in the PDCCH can adapt to multiple data transmissions within a certain period of time. Thus, a semi-persistent scheduling method or a multi-level PDCCH scheduling method can be adopted. Alternatively, the notification in the PDCCH of the scheduling data can be divided into two parts, with different notification methods or in different PDCCHs. For example, the first part of the information could be notified via MAC-CE, RRC, or a group PDCCH, while the second part of the information could be notified via the PDCCH of the scheduling data channel. Or, as shown in Figure 7 or Figure 8, the first part of the information could be notified in PDCCH1, and the second part in PDCCH2.

[0278] In some embodiments, the range of time-domain configuration parameters for detecting the PDCCH may differ between the first communication node of the first type and the first communication node of the second type.

[0279] For example, the set of possible candidate values ​​for the time-domain detection period of the PDCCH needs to be determined separately for the first communication node of the first type and the first communication node of the second type. For instance, for the first communication node of the first type, the maximum value in the set of possible candidate values ​​for the time-domain detection period of the PDCCH is larger than that for the first communication node of the second type.

[0280] 6. Power control method

[0281] In some embodiments, the power control methods may be different for the first communication node of the first type and the first communication node of the second type.

[0282] In some embodiments, the PDCCH of the data channel of the first communication node of the first type does not include power control information; and / or the PDCCH of the data channel of the first communication node of the second type includes power control information.

[0283] For example, for the first communication node of the first type, since the channel does not change over a period of time, the power does not need to be dynamically adjusted. Therefore, the PDCCH of the scheduling data channel may not include power control information, such as Transmit Power Control (TPC) information.

[0284] The power control information can be communicated through at least one of the following: RRC signaling, MAC-CE signaling, or group PDCCH signaling. That is, TPC information does not require real-time dynamic modulation and can be communicated through at least one of the following: RRC signaling, MAC-CE signaling, or group PDCCH signaling.

[0285] Alternatively, for the first type of communication node, TPC information may not be required. Power control information values ​​are notified via RRC and / or MAC-CE. For the second type of communication node, power control information (TPC information) is included in the PDCCH of the scheduling data channel.

[0286] 7. Method of sending HARQ-ACK information

[0287] In some embodiments, the first communication node reports a corresponding HARQ-ACK message for multiple downlink data channels.

[0288] Among them, different downlink data channels in multiple downlink data channels occupy different resources, including time domain resources and / or frequency domain resources.

[0289] 8. Reporting methods for mobility measurements

[0290] For example, the mobility measurement reporting methods differ for different types of first communication nodes. That is, the mobility measurement reporting methods for first-type first communication nodes are different from those for second-type first communication nodes.

[0291] For example, for the first communication node of the first type, mobility measurement may not be performed, mobility measurement reports may not be submitted, and tracking areas may not be reported.

[0292] For the first communication node of the second type, mobility measurement is required, and a mobility measurement report is also required. When the tracking area changes, tracking area update information is also required.

[0293] 9. Paging methods

[0294] For example, the paging methods differ for different types of first communication nodes. That is, the paging methods for the first type of first communication node are different from those for the second type of first communication node.

[0295] For example, for the first communication node of the first type, paging can be performed within only one or a few cells, meaning the final area is fixed at one or more cells. This could be because the cells are known to the network and do not require real-time terminal updates, or because the number of cells within the tracking area is small.

[0296] For the first communication node of the second type, paging requires paging the target user in multiple cells within the tracking area.

[0297] 10. Methods for handling measurement gaps

[0298] For example, the measurement gap is handled differently for different types of first communication nodes. That is, the measurement gap is handled differently for first-type first communication nodes and second-type first communication nodes.

[0299] For example, for the first communication node of the first type, there is no need to introduce the measurement gap restriction introduced by the measurement of mobility. That is, the first communication node of the first type does not need the measurement gap restriction. On the time-frequency resources of the measurement gap notified by the cell specific, the base station can also schedule the first communication node of the first type to receive downlink signals or transmit uplink signals.

[0300] For the first communication node of the second type, a measurement gap restriction needs to be introduced. On the time-frequency resources corresponding to the measurement gap, the first communication node of the second type needs to perform inter-cell mobility measurement. The serving cell cannot schedule the first communication node of the second type on the measurement gap. For example, it cannot receive downlink signals or send uplink signals, and can only perform inter-cell mobility measurement.

[0301] 11. Methods for determining lead time

[0302] For example, the timing advance (TA) differs for different types of first communication nodes. That is, the timing advance of the first type of first communication node is different from that of the second type of first communication node.

[0303] For example, the determination method of TA differs. For the first type of first communication node, the channel does not change within a certain period, so TA does not need to be dynamically adjusted, or MAC-CE notification of TA information is not required, and / or random access will not be initiated due to uplink asynchrony. And / or, compared to the second type of first communication node, the adjustment period of TA signaling for the first type of first communication node is longer.

[0304] 12. Parameters of the downlink synchronization signal

[0305] For example, the parameters of the downlink synchronization signal are different for different types of first communication nodes. That is, the parameters of the downlink synchronization signal are different for the first type of first communication node and the second type of first communication node.

[0306] For example, the period for measuring the downlink synchronization signal may differ for a first type of first communication node. A longer downlink synchronization method may be used for a first type of first communication node compared to a second type. For instance, the base station may notify the first type of first communication node of a UE-specific downlink synchronization signal, and the first type of first communication node may perform downlink synchronization and / or rate matching of other signals based on the UE-specific downlink synchronization signal. A first type of first communication node may ignore information related to the cell-specific downlink synchronization signal, at least when the terminal is in a linked state, and may not perform downlink measurement and / or rate matching of other signals based on the cell-specific downlink synchronization signal. And / or for a first type of first communication node, for the same synchronization signal index, the parameters of the synchronization signal may differ when the downlink synchronization signal is used as a measurement reference signal and when it is used as a rate matching signal. For example, when the downlink synchronization signal is used as a measurement reference signal, its time domain period is the first period; when it is used as a rate matching signal, its corresponding time domain period is the second period. Preferably, the first period is longer than the second period, where the first period is a UE-specific parameter and the second period is a cell-specific parameter. The downlink synchronization signal, acting as a rate matching signal, indicates unavailable resources for other channels or signals based on this downlink synchronization signal. These resources include at least one of the following: time-domain resources, frequency-domain resources, spatial-domain resources, and code-domain resources.

[0307] 13. Positioning-related parameters

[0308] For example, the positioning-related parameters differ for different types of first communication nodes. That is, the positioning-related parameters are different for the first type of first communication node and the second type of first communication node.

[0309] For example, due to differences in positioning parameters, the first type of first communication node, which is stationary or moves very slowly, can achieve better positioning accuracy compared to the second type. For instance, more CSI-RS resources can be used to locate the first type of first communication node. The reporting cycle for positioning information can also be longer.

[0310] 14. CP length related parameters

[0311] For example, the CP length-related parameters differ for different types of first communication nodes. That is, the CP length-related parameters are different for the first type of first communication node and the second type of first communication node.

[0312] For example, the parameters related to the CP length differ. For instance, for a first-type communication node, because the channel feedback is more accurate, the precoding from the base station to the first-type communication node basically aligns the multipath signals, allowing for a smaller CP value. Therefore, the candidate value set for the CP value needs to be determined separately for different types of terminals. For example, for a first-type communication node, the candidate value set is set 1, and for a second-type communication node, its candidate value set is set 2. Preferably, the minimum value in set 1 is less than the minimum value in set 2.

[0313] Furthermore, the first communication node can report its corresponding communication mode through at least one of the following methods:

[0314] Implementation Method 1: The first communication node sends its type information or capability information to the second communication node; wherein there is a correspondence between the type information or capability information and the communication modes in the communication mode set, and the second communication node can determine the communication mode of the first communication node when it receives the type information or capability information.

[0315] For example, when reporting its capabilities, the first communication node reports whether it is a first type of first communication node or a second type of first communication node. For instance, a first communication node whose location is always fixed will report itself as a first type of first communication node, a first communication node whose location changes will report itself as a second type of first communication node, or a first communication node that does not report itself will be a second type of first communication node.

[0316] In some embodiments, when a first communication node corresponds to multiple types of the first communication node in multiple time periods, the first communication node may also send multiple sets of capability information, wherein the multiple sets of capability information correspond to multiple communication modes of the first communication node respectively. Preferably, the multiple sets of capability information include multiple sets of values ​​of at least one capability information of the same type.

[0317] Implementation Method 2: Send status information to the second communication node. This status information can also be called mobility status information, and there is a correspondence between this status information and the communication mode of the first communication node. For example, the first communication node sends mobility status information to the second communication node, and the mobility status information is used to determine the type of the first communication node.

[0318] In this context, a first communication node corresponds to different types at different time periods.

[0319] For example, the first communication node reports its movement status to the second communication node. For a movable first communication node, when the first communication node is in a fixed position or moving at a very low speed, the first communication node reports status information to the second communication node, so the status information indicates that the first communication node will enter a first type of first communication node state. When the first communication node is in a position-moving state, the first communication node reports status information to the second communication node indicating that the first communication node will enter a second type of first communication node state.

[0320] When the first communication node reports that it will enter the first type of first communication node state, it can also report its movement speed level. This allows the second communication node to determine the magnitude of various parameters in the first type of wireless communication mode, such as the detection duration of PDCCH1, which differs for first communication nodes at different movement speeds. First communication nodes at different movement speed levels can also be referred to as multiple types of first communication nodes. The specific name does not affect the inventiveness of this patent. In this case, the first communication nodes at different movement speed levels only affect the parameter magnitude or parameter set of the first communication nodes in the wireless transmission mode of the aforementioned first type of first communication node. Therefore, these multiple types of first communication nodes can still be classified as first type of first communication nodes.

[0321] Implementation method 3: The first communication node receives signaling from the second communication node and determines the type of the first communication node based on the signaling.

[0322] In some embodiments, the signaling is used to indicate the type of the first communication node.

[0323] For example, when deploying, the second communication node determines whether its target user is in a first-type first communication node state or a second-type first communication node state. For instance, a second communication node in a train station might determine its target user to be a first-type first communication node. The second communication node can also inform the system message of the desired first communication node state; if the first communication node does not meet this state, it will not connect to the second communication node.

[0324] Implementation method 4: The first communication node determines the type of the first communication node according to the agreed rules.

[0325] For example, the second communication node determines the state of the first communication node through measurement or reporting from the first communication node. If the first communication node is in a fixed position or moving at a very low speed, the second communication node notifies the first communication node that the wireless communication mode is mode 1; otherwise, it notifies the first communication node that the wireless communication mode is mode 2. In this case, the signaling from the second communication node may not be called notifying the first communication node of its state, but rather directly called notifying the first communication node of its communication mode signaling. This is merely a difference in name and does not affect the inventiveness of this patent.

[0326] Implementation method 5: The first communication node sends an instruction message to the second communication node.

[0327] The indication information is used to indicate the communication mode corresponding to the first communication node determined by the first communication node.

[0328] For example, the first communication node determines its type according to agreed-upon rules. For instance, it might be agreed that all first communication nodes are of the first type. In this case, the first communication mode is considered the unified communication mode, and the second communication mode is merely a special case of the first communication mode. The first communication mode can be degenerated into the second communication mode through parameter configuration. Thus, both the first and second communication modes can be categorized as the first communication mode, with the second communication mode being a special case of the first communication mode. In this case, determining the communication mode based on the first communication node can be done by agreeing that all first communication nodes are of the first type, and all first communication nodes correspond to the first communication mode. However, some parameters of the first communication mode corresponding to different first communication nodes may differ. For example, in Figure 8, one DCI2 corresponds to multiple PDSCHs. Alternatively, the number of PDSCHs corresponding to one DCI2 can be configured through parameters, such as configuring one DCI2 to correspond to one PDSCH, thus degenerating Figure 8 into Figure 7.

[0329] S102, Communicate with the second communication node based on the communication mode corresponding to the first communication node.

[0330] Among them, the first communication node of the first type corresponds to the first communication mode, and the first communication node of the second type corresponds to the second communication mode.

[0331] For example, the first communication node and the second communication node can communicate using a communication mode corresponding to the type of the first communication node. For instance, if the first communication node is of type 1, it can communicate using the first communication mode. Or, if the first communication node is of type 2, it can communicate using the second communication mode.

[0332] For example, communication parameters such as power consumption, data transmission rate, data format, and security protocol corresponding to the type of the first communication node can be determined, and communication between the first communication node and the second communication node can be realized based on these communication parameters, including the first communication node sending signals and / or receiving signals to the second communication node, and the second communication node sending signals and / or receiving signals to the first communication node.

[0333] In some embodiments, a communication connection between the first communication node and the second communication node can be established first based on the relevant parameters of the communication mode corresponding to the type of the first communication node, thereby realizing communication between the first communication node and the second communication node.

[0334] Based on the technical solution provided in this disclosure, different communication modes can be provided for different types of first communication nodes (e.g., terminals with different movement speeds). This allows for the provision of communication modes that are more adapted to the characteristics of different types of communication nodes, thereby improving the flexibility and reliability of the communication method. Furthermore, by providing more adaptable communication modes, the communication quality between communication nodes is improved, communication resources are fully utilized, and communication costs are reduced.

[0335] In some embodiments, the HARQ-ACK feedback method provided in this disclosure is described in detail:

[0336] In some embodiments, the HARQ-ACK feedback method described above for the first communication node of the first type can also be adapted to communication nodes in other scenarios.

[0337] For example, this also applies to the first communication node described below, where the error rate of the PDSCH is 1% or 0.1%. In this case, reporting HARQ-ACK information separately for each PDSCH would result in a waste of resources. Furthermore, a HARQ-ACK codeword can include HARQ-ACK information for PDSCHs across all frequency domain bandwidths. In some embodiments, the channel characteristics and traffic volume of different TRPs can be the same for different frequency domain bands.

[0338] In some embodiments, the HARQ-ACK feedback method of the first communication node may include at least the following possible examples:

[0339] Example 1: For various types of first communication nodes, a single HARQ-ACK message can be reported for multiple PDSCHs. This is described in Figures 3 and 4 above.

[0340] Example 2: (or HARQ-ACK Scheme 2) When predetermined conditions are met, HARQ-ACK information is fed back; otherwise, no HARQ-ACK information corresponding to the data channel is fed back. The predetermined conditions include at least one of the following: the HARQ-ACK feedback timer times out, or the predetermined information of the data channel changes. The predetermined information of the data channel includes at least one of the following: frequency domain resource set, quasi-co-address parameters and DMRS scheduling information, and the HARQ-ACK of the data channel. See the description in Figure 5 above.

[0341] Example 3: Feedback HARQ-ACK information for different frequency domain bandwidth groups.

[0342] For example, since the channel variation characteristics and traffic volume are different due to different frequency domain bandwidths and / or different CORESET groups, HARQ-ACK information can be fed back separately for different frequency domain bandwidth groups.

[0343] In this context, HARQ-ACK information from one frequency domain bandwidth group constitutes one HARQ-ACK codeword, and HARQ-ACK from different frequency domain bandwidth groups constitute different HARQ-ACK codewords. Different HARQ-ACK codewords from different frequency domain bandwidth groups are fed back in different channels, or at different times, or in the same channel, but are independently channel coded.

[0344] In each feedback, it is not necessary to include HARQ-ACK information in all frequency domain bandwidths. Only when the first communication node receives at least one frequency domain bandwidth set of PDSCH will it feed back the HARQ-ACK information corresponding to this frequency domain bandwidth set.

[0345] As shown in Figure 9, in the related technology, when a semi-static HARQ-ACK codeword (also called a Type I HARQ-ACK codeword) is fed back at time t3, this codeword includes the HARQ-ACK information of the PDSCH in the four CCs at times t0, t1, and t2. Even if no PDSCH from CCs 3 to 4 is received during this period, one or more bits will still be included in this HARQ-ACK information for the PDSCH from CCs 3 to 4. If each CC occupies 1 bit in this codeword at each time, then the HARQ-ACK codeword at time t3 includes 3*4=12 bits. Moreover, each time a HARQ-ACK is fed back, it must include the HARQ-ACK information from each of the four CCs.

[0346] The shaded area in Figure 9 represents the CC (Content Required) of the PDSCH sent by the second communication node to the first communication node. Therefore, this paper adopts the scheme shown in Figure 10. In Figure 10, CC1 to CC4 are divided into two CC groups, each corresponding to a HARQ-ACK codeword. For example, CC1 to CC2 correspond to HARQ-ACK codeword 1, and CC3 to CC4 correspond to HARQ-ACK codeword 2. A single time unit can include one or both of these codewords. For example, in Figure 10, since no PDSCH from CC3 to CC4 is received during this time, only HARQ-ACK codeword 1 needs to be fed back. The HARQ-ACK codeword includes 2*3 bits, where 2 corresponds to CC1 and CC2, and 3 corresponds to the three times t0, t1, and t2. If the next feedback time interval only receives PDSCH from CC3 to CC4, then only HARQ-ACK codeword 2 will be fed back. Conversely, if at least one PDSCH from CC1 to CC2 and at least one PDSCH from CC3 to CC4 have already been received at a given feedback time interval, then both HARQ-ACK codeword 1 and HARQ-ACK codeword 2 can be fed back at that time interval. HARQ-ACK codeword 1 and HARQ-ACK codeword 2 are fed back on the same uplink carrier.

[0347] The downlink frequency domain bandwidth that needs to feed back HARQ-ACK information over an uplink frequency domain bandwidth is divided into more than one group. For each downlink frequency domain bandwidth group, it is determined whether it needs to be fed back at a single feedback time. At a single feedback time, one or more HARQ-ACK codewords corresponding to one or more downlink frequency domain bandwidth groups can be fed back. In Figures 9 and 10 above, in a HARQ-ACK codeword, for each CC, there is only one HARQ-ACK bit at a time. This is just an example, and this embodiment does not exclude the possibility that for each CC in a HARQ-ACK codeword, there may be one or more HARQ-ACK bits at a time. The above is for Type I HARQ-ACK codewords. For Type II HARQ-ACK codewords, Type II HARQ-ACK codewords can also be determined separately for multiple downlink carrier groups. For example, for DAI information, Type II HARQ-ACK codewords can be calculated independently for each downlink frequency domain bandwidth group. The Type I HARQ-ACK codewords and Type II HARQ-ACK codewords mentioned above are the Type-1 HARQ-ACK codewords and Type-2 HARQ-ACK codewords in the relevant 5G standards, respectively. Furthermore, for different CORESET groups, frequency domain bandwidth groups can be determined separately, and HARQ-ACK codewords can be determined separately for each frequency domain bandwidth group. When a frequency domain bandwidth includes more than one CORESET group, this downlink frequency domain bandwidth belongs to more than one downlink frequency domain bandwidth group. For example, CC1 and CC3 have two CORESET groups, so there are four HARQ-ACK codewords in Figure 10: HARQ-ACK codeword 1 corresponds to {CC1~CC2, CORESET group 1}, HARQ-ACK codeword 2 corresponds to {CC1, CORESET group 2}, HARQ-ACK codeword 3 corresponds to {CC3~CC4, CORESET group 1}, and HARQ-ACK codeword 4 corresponds to {CC3, CORESET group 2}. HARQ-ACK codewords 1 to 4 are determined separately. A HARQ-ACK codeword consists of consecutive HARQ-ACK bits. Different HARQ-ACK codewords can be fed back in the same or different channels. When they need to be fed back in the same channel, the order of multiple HARQ-ACK codewords is determined according to a predetermined rule.

[0348] In some embodiments, as shown in FIG11, the communication method may further include the following steps:

[0349] S103, The first communication node receives control information from the second communication node on the first link.

[0350] The control information includes information related to the second link, which includes a communication link between the first communication node and one or more third communication nodes.

[0351] In some embodiments, the first communication node may be a first communication node of the first type described above.

[0352] In some embodiments, on the first link, the first communication node can be regarded as a terminal. Moreover, the first communication node is located in a fixed position.

[0353] In some embodiments, the first communication node may be a relay node.

[0354] For example, a second communication node may have multiple first communication nodes (e.g., relay nodes) below it. The first communication nodes do not have resource scheduling capabilities and can communicate with one or more third communication nodes.

[0355] At this point, the first communication node can be used to send downlink data to the third communication node or receive uplink data sent by the third communication node. The second communication node schedules multiple first communication nodes, enabling them to send data to the third communication node on the same time-frequency resources. Before sending data to the third communication node, the first communication node can receive data sent from the second communication node (or receive data sent from the fourth communication node), process the data, and then send it to the third communication node. The second communication node can send the data destined for the third communication node to the first communication node in advance. However, due to the dynamic changes in the channel between the first and third communication nodes, the second communication node sends the scheduling information and data for the resources on the first and third communication nodes separately. We call the communication link between the second and first communication nodes the first link (also known as the backhaul link), the communication link between the first and third communication nodes the second link (also known as the access link), and the communication link between the fourth and first communication nodes the third link.

[0356] In some embodiments, the control information includes at least one of the following:

[0357] The correspondence between the index of the data received by the first communication node on the first link or the third link and the resources on the second link; the correspondence between the resources on the second link and the transmission adjustment amount; the correspondence between the index of the data received by the first communication node on the first link or the third link and the transmission adjustment amount; and the correspondence between the index of the data received by the first communication node on the first link or the third link and the index of one or more third communication nodes.

[0358] The third link is the link between the fourth communication node and the first communication node; the resources include at least one of the following: time domain resources, frequency domain resources, code domain resources, and spatial domain resources; the transmission adjustment includes at least one of the following: time domain adjustment, phase adjustment, amplitude adjustment, frequency adjustment, and power adjustment.

[0359] Thus, based on the aforementioned control information, the first communication node can determine the transmission information of the second link, such as the time-frequency-space resources used for data transmission, that is, determine how to transmit data with the third communication node based on the control information.

[0360] In some embodiments, the control information includes at least one of the following control information: physical layer control information and MAC layer control information.

[0361] In some embodiments, control information can be communicated via at least one of the following on the first link: physical layer control information, MAC layer control information, and DCI signaling. The scheduling delays of these three signaling methods decrease sequentially according to the order of physical layer control information, MAC layer control information, and DCI signaling. It should be understood that MAC-CE signaling and / or DCI signaling are preferred.

[0362] In some embodiments, the first communication node receives a physical broadcast channel, which includes a demodulation reference signal but does not include a frame number index.

[0363] In some embodiments, the aforementioned data information can also be sent from the fourth communication node to the first communication node; that is, the first communication node can receive the data information sent by the fourth communication node.

[0364] For example, a second or fourth communication node sends data to a first communication node, which processes the data and then sends it to a third communication node. The second communication node sends the aforementioned control information to the first communication node to control the first communication node to send data on the second link.

[0365] The resources to be scheduled include at least one of the following: time domain resources, frequency domain resources, spatial domain resources, and code domain resources.

[0366] The aforementioned code domain resources include reference signal resources on the second link, such as demodulation reference signal resources.

[0367] The aforementioned adjustments include phase adjustment, frequency adjustment, time adjustment, and amplitude adjustment.

[0368] For example, when the correspondence between resources and adjustment amounts on the second link is used to instruct the first communication node to send information (including data and / or control information) to the third communication node on the resources of the second link, a notification adjustment amount, such as a phase adjustment amount, can be used. When the first communication node needs to send data to the third communication node on the second link, the data can be multiplied by a parameter obtained according to the phase adjustment amount (e.g., parameter e). jθ (where θ is the phase adjustment amount) is then transmitted, so that the data sent by multiple first communication nodes to the same third communication node can be positively superimposed at the third communication node.

[0369] If it is a frequency adjustment amount, then when the first communication node sends data to the third communication node on the second link, it needs to multiply the data by a parameter obtained according to the frequency adjustment amount (e.g., the parameter is e). jft (where f is the frequency adjustment amount) and then transmit. If it is a time adjustment amount, then when the first communication node sends data to the third communication node on the second link, the data needs to be transmitted with a delay or advance of the time indicated by the time adjustment amount. When the notification is the correspondence between the data index on the first link and the adjustment amount, it means that when the first communication node sends the data represented by the data index on the first link to the third communication node on the second link, it needs to use the corresponding adjustment amount.

[0370] If it is an amplitude adjustment amount, then when the first communication node sends data to the third communication node on the second link, it needs to multiply the data by the amplitude adjustment amount before sending it.

[0371] In some embodiments, the first link for transmitting the control information can be a wired link or a wireless link. A wireless link is preferred, and the data link on the first link for transmitting to the second link and the control information link for controlling communication on the second link are separate links. Of course, in a wired link, they can also be separate.

[0372] In some implementations, the fourth communication node and the second communication node are different communication nodes. In other implementations, the fourth communication node and the second communication node are the same communication node, but this same communication node sends the control information and the data on different links.

[0373] For example, as shown in Figure 12, the second communication node is a BBU, the first communication node is an RRU, and the third communication node is a terminal (e.g., terminal 1, terminal 2, and terminal 3 in Figure 12). For example, the first link can be used to transmit backhaul data, and the second link can be used to transmit access data. In some embodiments, the first link can also be used to transmit control information. The RRU can perform certain processing on the data sent by the BBU, such as adding precoding processing before sending it to the terminal. Furthermore, multiple RRUs send data to the same terminal, especially multiple RRUs can send the same data to the same terminal on the same time-frequency resources, i.e., multiple RRUs send data to the same terminal in a CJT manner. To ensure that the data from these multiple RRUs are positively superimposed at the same terminal, the BBU needs to notify each RRU to adjust the data before sending it. The adjustment amount includes at least one of the aforementioned phase adjustment amount, frequency adjustment amount, and time adjustment amount.

[0374] Based on Figure 12, there are both data links and control links between the second and first communication nodes, with the control link used to send control information. The control and data links can also be bidirectional, meaning the data link includes the third communication node sending data, and the first communication node forwarding data from the third communication node to the second communication node. The control link also includes the first communication node sending control information about the second link to the second communication node. Alternatively, on the first link, only the control link can be bidirectional, while the data link only has a direction from the second communication node to the first communication node, without a direction from the first communication node to the second communication node.

[0375] Based on Figure 12, both control information and data information can be sent from the second communication node to the first communication node.

[0376] In another possible example, as shown in Figure 13, control information is sent from the fourth communication node to the first communication node, and data information is sent from the second communication node to the first communication node. The control information can also be referred to as control information used to control communication on the second link.

[0377] In the above embodiments, the multiple PDSCHs satisfy at least one of the following characteristics: each PDSCH includes different data information; multiple PDSCHs have independent channel coding; multiple PDSCHs each correspond to a HARQ-ACK result; multiple PDSCHs are scheduled by different PDCCHs; different data information is transmitted on multiple PDSCHs; there are time-domain non-continuous transmission opportunities in multiple PDSCHs; the data in multiple PDSCHs each correspond to a MCS information; the data in multiple PDSCHs each correspond to a DMRS information; or multiple PDSCHs are located in one or more time units.

[0378] In the above embodiments, a frequency domain bandwidth includes at least one of the following: BWP, serving cell, carrier frequency.

[0379] Based on the above embodiments, the second communication node can control the data transmission mode between the first and third communication nodes by sending control information, thereby ensuring normal data transmission on the second link and improving the reliability of the communication system.

[0380] Based on the above scheme, this disclosure also provides a new communication link method adapted to a new relay node. This disclosure provides a broadcast channel transmission method that can effectively reduce the overhead of the broadcast channel.

[0381] As shown in Figure 14, this disclosure also provides another communication method, applied to a second communication node, including:

[0382] S201. Determine the communication mode corresponding to the first communication node.

[0383] In one possible implementation, the communication mode belongs to a set of communication modes, which includes at least a first communication mode.

[0384] In one example, the communication mode corresponding to the first communication node can be determined based on the type of the first communication node.

[0385] For example, if only a first communication node of the first type exists, there is no need to determine the communication mode; the first communication mode can be used directly for communication. In this case, the first communication mode can be understood as the default communication mode. Here, the first communication node of the first type corresponds to the first communication mode.

[0386] It should be understood that at this time, the first communication node is the first communication node of the first type.

[0387] In cases where the set of communication modes includes at least the first communication mode, the detailed description of the communication mode corresponding to the first communication node can be found in the relevant description in step S101 above, and will not be repeated here.

[0388] In another possible implementation, the set of communication modes includes at least a first communication mode and a second communication mode.

[0389] For example, the type of the first communication node includes at least one of a first type and a second type, wherein the first type of the first communication node corresponds to a first communication mode, and the second type of the first communication node corresponds to a second communication mode.

[0390] In some embodiments, the first communication mode and the second communication mode differ in at least one of the following aspects:

[0391] Channel state information related parameters, MCS determination method, frequency domain resource determination method for data channel, characteristics of frequency domain resource set included in BWP, scheduling method of physical downlink control channel, power control method, HARQ-ACK information, mobility measurement reporting method, paging method, measurement gap processing method, timing advance determination method, downlink synchronization signal parameters, positioning related parameters, CP length related parameters.

[0392] In some embodiments, the channel state information related parameters include at least one of the following:

[0393] Parameters related to the measurement reference signal, parameters related to the reporting method of channel state information, parameters related to the components of channel state information, and capability information related to the channel state information of the first communication node.

[0394] In some embodiments, the parameters related to the components of the channel state information include at least one of the following: the possible values ​​of the number of spatial basis vectors that make up the precoding vector, the oversampling factor, the composition of the precoding vector, and the representation of the spatial basis vectors.

[0395] In some embodiments, the maximum possible number of spatial basis vectors in the precoding vector of a first communication node of the first type is greater than the maximum possible number of spatial basis vectors in the precoding vector of a first communication node of the second type.

[0396] In some embodiments, the oversampling factor of the first communication node of the first type is greater than the oversampling factor of the first communication node of the second type; or, the maximum possible value of the oversampling factor of the first communication node of the first type is greater than the maximum possible value of the oversampling factor of the first communication node of the second type.

[0397] In some embodiments, the precoding vector of the first communication node of the first type does not include a time-domain basis vector; and / or,

[0398] The first communication node of the second type determines, based on signaling information or predetermined rules, whether the precoding vector of the first communication node of the second type includes a time-domain basis vector or does not include a time-domain basis vector.

[0399] In some embodiments, the parameters related to the reporting method of channel state information include at least one of the following:

[0400] The reporting method of channel state information, the reporting period of channel state information, the possible values ​​of the reporting period of channel state information, and the possible values ​​of the number of channel state information reference signal resources included in the channel state information reference signal resource group.

[0401] In some embodiments, the channel state information of the first communication node of the first type is reported in an explicit manner, and / or, the channel state information of the first communication node of the second type is reported in a precoded vector manner.

[0402] In some embodiments, the channel state information reference signal resources included in a channel state information reference signal resource group satisfy at least one of the following:

[0403] All channel state information reference signal resources included in the channel state information reference signal resource group can be received simultaneously by the first communication node;

[0404] The Doppler spread values ​​of the channel state information reference signal resources included in the channel state information reference signal resource group are within the preset Doppler spread value range;

[0405] The delay spread value of the channel state information reference signal resources included in the channel state information reference signal resource group is within the preset delay value range;

[0406] The sum of the channels of the different channel state information reference signal resources included in the channel state information reference signal resource group satisfies the preset summation channel requirements;

[0407] The channel state information reference signal resources included in the channel state information reference signal resource group correspond to the same data layer;

[0408] A precoding vector is determined based on the channel state information reference signal resources included in the channel state information reference signal resource group.

[0409] In some embodiments, the parameters related to the measurement reference signal include at least one of the following:

[0410] The time-domain period of the measurement reference signal, the possible values ​​of the time-domain period of the measurement reference signal, and the parameters of the measurement resources used for interference measurement.

[0411] In some embodiments, the time-domain period of the measurement reference signal for channel measurement of the first communication node of the first type is the same as or different from the time-domain period of the measurement resource for interference measurement; and / or,

[0412] The time-domain period of the measurement reference signal used for channel measurement of the first communication node of the second type is the same as the time-domain period of the measurement resource used for interference measurement.

[0413] In some embodiments, determining the communication mode corresponding to the first communication node includes at least one of the following:

[0414] Receive indication information sent by the first communication node; wherein the indication information is used to indicate the communication mode corresponding to the first communication node determined by the first communication node;

[0415] The status information of the first communication node sent by the first communication node is received, and there is a corresponding relationship between the status information and the communication mode of the first communication node.

[0416] Receive the type information of the first communication node sent by the first communication node. There is a correspondence between the type information and the communication mode of the first communication node.

[0417] Send signaling to the first communication node and determine the communication mode based on the signaling;

[0418] The communication mode is determined according to the agreed rules.

[0419] In some embodiments, the communication mode set includes multiple communication modes, and the communication modes satisfy at least one of the following:

[0420] There are two first communication nodes, each corresponding to a different communication mode in the communication mode set, and one first communication node corresponds to one communication mode.

[0421] A communication mode is the communication mode that a first communication node corresponds to in a time period. A first communication node may correspond to different communication modes in a set of communication modes in multiple time periods.

[0422] There is a correspondence between the communication mode and the type of the first communication node, with one first communication node corresponding to one type of first communication node; or one first communication node corresponds to different types at different time periods, where the first communication mode corresponds to the first type of first communication node, and the second communication mode corresponds to the second type of first communication node.

[0423] In some embodiments, the second communication node may also transmit multiple Physical Downlink Control Channels (PDCCHs), wherein the multiple PDCCHs schedule at least one data channel. The multiple PDCCHs satisfy at least one of the following:

[0424] The scheduling information for the data channel is determined based on multiple PDCCHs;

[0425] Multiple PDCCHs are used to schedule multiple data channels; each of the multiple data channels is determined based on at least two of the multiple PDCCHs.

[0426] Different PDCCHs among multiple PDCCHs differ in at least one parameter.

[0427] S202, Communicate with the first communication node based on the communication mode corresponding to the first communication node.

[0428] In some embodiments, the second communication node receives a HARQ-ACK message corresponding to one of the multiple downlink data channels reported by the first communication node;

[0429] Among them, different downlink data channels in multiple downlink data channels occupy different resources, including time domain resources and / or frequency domain resources.

[0430] In some embodiments, when a first communication node corresponds to multiple types of the first communication node in multiple time periods, the method further includes: a second communication node receiving multiple capability information sent by the first communication node; each capability information corresponds to one of the multiple types of the first communication node.

[0431] In some embodiments, the second communication node sends control information to the first communication node on the first link. The control information includes information related to the second link, and the second link includes a communication link between the first communication node and one or more third communication nodes. The control information includes at least one of the following:

[0432] The correspondence between the index of the data received by the first communication node on the first link or the third link and the resources on the second link; the correspondence between the resources on the second link and the transmission adjustment amount; the correspondence between the index of the data received by the first communication node on the first link or the third link and the transmission adjustment amount; and the correspondence between the index of the data received by the first communication node on the first link or the third link and the index of one or more third communication nodes.

[0433] The third link is the link between the fourth communication node and the first communication node; the resources include at least one of the following: time domain resources, frequency domain resources, code domain resources, and spatial domain resources; the transmission adjustment includes at least one of the following: time domain adjustment, phase adjustment, amplitude adjustment, frequency adjustment, and power adjustment.

[0434] In some embodiments, the second communication node transmits a physical broadcast channel, which includes a demodulation reference signal but does not include a frame number index.

[0435] Furthermore, for a detailed description of steps S201-S202, please refer to the relevant descriptions of steps S101-S103 above, which will not be repeated here.

[0436] This enhances the flexibility and reliability of communication methods. Furthermore, by providing more adaptable communication modes, it improves the communication quality between nodes, fully utilizes communication resources, and reduces communication costs.

[0437] As shown in Figure 15, this disclosure also provides another communication method, applied to a first communication node, including:

[0438] S301, Receive control information from the second communication node on the first link.

[0439] The control information is included in the physical broadcast channel, and / or the control information includes information related to the second link.

[0440] In one possible implementation, where the control information is included in a physical broadcast channel, the physical broadcast channel includes a demodulation reference signal but does not include a frame number index.

[0441] In some embodiments, the first communication node receives a physical broadcast channel, which includes a demodulation reference signal but does not include a frame number index.

[0442] In this embodiment, the system frame number is not notified in the broadcast channel PBCH. In existing 5G NR protocols, the PBCH includes 6 bits for notifying the system frame number, significantly increasing the PBCH load. Since the PBCH is a broadcast channel and resources are very precious, reducing the PBCH load will greatly improve system efficiency and reduce system power consumption. The application of the system frame number at the physical layer is limited; therefore, this paper proposes omitting the system frame number from the PBCH. The PBCH can notify the time slot number and / or the index of the synchronization signal block. This reduces the blind detection complexity of the first communication node's PBCH. For example, the demodulation reference signal of the PBCH does not need to carry time slot number information or synchronization signal block index information, and the demodulation reference signal of the PBCH is the same in each synchronization signal block.

[0443] In another embodiment of this invention, the PBCH bit information does not carry the index of the synchronization signal block. The index of the synchronization signal block can be obtained based on the synchronization signal and / or the demodulation reference signal of the PBCH. In this way, when the first communication node performs neighbor cell measurement, it is not necessary to perform channel decoding on the neighbor cell PBCH. Instead, it can determine which synchronization signal block has the best energy among multiple synchronization signal blocks simply by detecting the synchronization signal and / or the demodulation reference signal of the PBCH.

[0444] In another possible implementation, where the control information includes information related to the second link, the second link comprises a communication link between the first communication node and one or more third communication nodes; the control information includes at least one of the following:

[0445] The correspondence between the index of the data received by the first communication node on the first link or the third link and the resources on the second link; the correspondence between the resources on the second link and the transmission adjustment amount; the correspondence between the index of the data received by the first communication node on the first link or the third link and the transmission adjustment amount; and the correspondence between the index of the data received by the first communication node on the first link or the third link and the index of one or more third communication nodes.

[0446] The third link is the link between the fourth communication node and the first communication node; the resources include at least one of the following: time domain resources, frequency domain resources, code domain resources, and spatial domain resources; the transmission adjustment includes at least one of the following: time domain adjustment, phase adjustment, amplitude adjustment, and frequency adjustment.

[0447] Thus, based on the aforementioned control information, the first communication node can determine the transmission information of the second link, such as the time-frequency-space resources used for data transmission, that is, determine how to transmit data with the third communication node based on the control information.

[0448] In some embodiments, the first communication node may be a first communication node of the first type described above.

[0449] In some embodiments, on the first link, the first communication node can be regarded as a terminal. Moreover, the first communication node is located in a fixed position.

[0450] In some embodiments, the first communication node may be a relay node.

[0451] For example, a second communication node may have multiple first communication nodes (e.g., relay nodes) below it. The first communication nodes do not have resource scheduling capabilities and can communicate with one or more third communication nodes.

[0452] At this point, the first communication node can be used to send downlink data to the third communication node or receive uplink data sent by the third communication node. The second communication node schedules multiple first communication nodes, enabling them to send data to the third communication node on the same time-frequency resources. Before sending data to the third communication node, the first communication node can receive data sent from the second communication node (or receive data sent from the fourth communication node), process the data, and then send it to the third communication node. The second communication node can send the data destined for the third communication node to the first communication node in advance. However, due to the dynamic changes in the channel between the first and third communication nodes, the second communication node sends the scheduling information and data for the resources on the first and third communication nodes separately. We call the communication link between the second and first communication nodes the first link (also known as the backhaul link), the communication link between the first and third communication nodes the second link (also known as the access link), and the communication link between the fourth and first communication nodes the third link.

[0453] In some embodiments, the control information includes at least one of the following control information: physical layer control information and MAC layer control information.

[0454] In some embodiments, control information can be communicated via at least one of the following on the first link: physical layer control information, MAC layer control information, and DCI signaling. The scheduling delays of these three signaling methods decrease sequentially according to the order of physical layer control information, MAC layer control information, and DCI signaling. It should be understood that MAC-CE signaling and / or DCI signaling are preferred.

[0455] In some embodiments, the control information described above can also be sent from the fourth communication node to the first communication node; that is, the first communication node can receive the control information sent by the fourth communication node.

[0456] For example, the second communication node sends data to the first communication node, the first communication node processes the data and then sends it to the third communication node. The fourth communication node sends the aforementioned control information to the first communication node to control the first communication node to send data on the second link.

[0457] The resources to be scheduled include at least one of the following: time domain resources, frequency domain resources, spatial domain resources, and code domain resources.

[0458] The aforementioned code domain resources include reference signal resources on the second link, such as demodulation reference signal resources.

[0459] The aforementioned adjustments include phase adjustment, frequency adjustment, and time adjustment.

[0460] For example, when the correspondence between resources and adjustment amounts on the second link is used to instruct the first communication node to send information (including data and / or control information) to the third communication node on the resources of the second link, a notification adjustment amount, such as a phase adjustment amount, can be used. When the first communication node needs to send data to the third communication node on the second link, the data can be multiplied by a parameter obtained according to the phase adjustment amount (e.g., parameter e). jθ (where θ is the phase adjustment amount) is then transmitted, so that the data sent by multiple first communication nodes to the same third communication node can be positively superimposed at the third communication node.

[0461] If it is a frequency adjustment amount, then when the first communication node sends data to the third communication node on the second link, it needs to multiply the data by a parameter obtained according to the frequency adjustment amount (e.g., the parameter is e). jft (where f is the frequency adjustment amount) and then transmit. If it is a time adjustment amount, then when the first communication node sends data to the third communication node on the second link, the data needs to be transmitted with a delay or advance of the time indicated by the time adjustment amount. When the notification is the correspondence between the data index on the first link and the adjustment amount, it means that when the first communication node sends the data represented by the data index on the first link or the third link to the third communication node on the second link, it needs to use the corresponding adjustment amount.

[0462] If it is an amplitude adjustment amount, then when the first communication node sends data to the third communication node on the second link, it needs to multiply the data by the amplitude adjustment amount before sending it.

[0463] In some embodiments, the first link for transmitting the control information can be a wired link or a wireless link. A wireless link is preferred, and the data link on the first link for transmitting to the second link and the control information link for controlling communication on the second link are separate links. Of course, in a wired link, they can also be separate.

[0464] In some implementations, the fourth communication node and the second communication node are different communication nodes. In other implementations, the fourth communication node and the second communication node are the same communication node, but this same communication node sends the control information and the data on different links.

[0465] For example, as shown in Figure 12, the second communication node is a BBU, the first communication node is an RRU, and the third communication node is a terminal device. The RRU can process the data sent by the BBU, such as adding precoding before sending it to the terminal. Furthermore, multiple RRUs can send data to the same terminal, especially multiple RRUs can send the same data to the same terminal on the same time-frequency resources, i.e., multiple RRUs send data to the same terminal using CJT. To ensure that the data from these multiple RRUs are positively superimposed at the same terminal, the BBU needs to notify each RRU to adjust the data before sending it. The adjustment amount includes at least one of the aforementioned phase adjustment, frequency adjustment, and time adjustment.

[0466] Based on Figure 12, there are both data links and control links between the second and first communication nodes, with the control link used to send control information. The control and data links can also be bidirectional, meaning the data link includes the third communication node sending data, and the first communication node forwarding data from the third communication node to the second communication node. The control link also includes the first communication node sending control information about the second link to the second communication node. Alternatively, on the first link, only the control link can be bidirectional, while the data link only has a direction from the second communication node to the first communication node, without a direction from the first communication node to the second communication node.

[0467] Based on Figure 12, both control information and data information can be sent from the second communication node to the first communication node.

[0468] In another possible example, as shown in Figure 13, control information is sent from the fourth communication node to the first communication node, and data information is sent from the second communication node to the first communication node. The control information can also be referred to as control information used to control communication on the second link.

[0469] In some embodiments, the multiple PDSCHs satisfy at least one of the following characteristics: each PDSCH includes different data information; the multiple PDSCHs are independently channel coded; each of the multiple PDSCHs corresponds to a HARQ-ACK message; the multiple PDSCHs are scheduled by different PDCCHs; different data information is transmitted on the multiple PDSCHs; there are time-domain discontinuous transmission opportunities in the multiple PDSCHs; the data in the multiple PDSCHs corresponds to a MCS message; the data in the multiple PDSCHs corresponds to a DMRS message; or the multiple PDSCHs are located in one or more time units.

[0470] In the above embodiments, a frequency domain bandwidth includes at least one of the following: BWP, serving cell, carrier frequency.

[0471] Based on the above embodiments, the second communication node can control the data transmission mode between the first and third communication nodes by sending control information, thereby ensuring normal data transmission on the second link and improving the reliability of the communication system.

[0472] As shown in Figure 16, this disclosure also provides another communication method applied to a second communication node, including:

[0473] S401, Send control information to the first communication node on the first link.

[0474] The control information is included in the broadcast channel, and / or the control information includes information related to the second link.

[0475] When control information is included in the physical broadcast channel, the physical broadcast channel includes a demodulation reference signal but does not include the frame number index.

[0476] The second link includes a communication link between the first communication node and one or more third communication nodes; information related to the second link includes at least one of the following:

[0477] The correspondence between the index of the data received by the first communication node on the first link or the third link and the resources on the second link; the correspondence between the resources on the second link and the transmission adjustment amount; the correspondence between the index of the data received by the first communication node on the first link or the third link and the transmission adjustment amount on the second link; and the correspondence between the index of the data received by the first communication node on the first link or the third link and the index of one or more third communication nodes.

[0478] The third link is the link between the fourth communication node and the first communication node; the resources include at least one of the following: time domain resources, frequency domain resources, code domain resources, and spatial domain resources; the transmission adjustment includes at least one of the following: time domain adjustment, phase adjustment, amplitude adjustment, frequency adjustment, and power adjustment.

[0479] Furthermore, for a detailed description of step S401, please refer to the relevant description of step S301 above, which will not be repeated here.

[0480] In the disclosed embodiments, transmission includes sending or receiving. Transmission can also be referred to as communication, and is used to denote the operation of the sender and receiver as transmission. On the sender side, transmission includes sending, and on the receiver side, transmission includes receiving.

[0481] The foregoing primarily describes the solutions provided in this disclosure from the perspective of interaction between various devices or network elements. It is understood that each device or network element, in order to achieve the aforementioned functions, includes corresponding hardware structures and / or software modules for executing each function. Those skilled in the art should readily recognize that, based on the algorithmic steps of the examples described in conjunction with the embodiments disclosed herein, this disclosure can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed in hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this invention.

[0482] Figure 17 is a schematic diagram of the composition of a communication device provided in an embodiment of this disclosure. As shown in Figure 17, the communication device 1700 can be applied to a first communication node and includes a determination module 1701 and a communication module 1702.

[0483] The determining module 1701 is used to determine the communication mode corresponding to the first communication node, wherein the communication mode belongs to a communication mode set, and the communication mode set includes at least the first communication mode.

[0484] The communication module 1702 is used to communicate with the second communication node based on the communication mode corresponding to the first communication node.

[0485] In some embodiments, the communication module 1702 is further configured to send HARQ-ACK information corresponding to a Hybrid Automatic Repeat Request for multiple downlink data channels; wherein different downlink data channels among the multiple downlink data channels occupy different resources, including time-domain resources and / or frequency-domain resources.

[0486] In some embodiments, the communication module 1702 is further configured to, when a corresponding HARQ-ACK message for a plurality of downlink data channels is NACK, send at least one of the following messages to the second communication node: NACK message, which indicates indication information for a plurality of downlink data channels, wherein the HARQ-ACK result of the plurality of downlink data channels is NACK.

[0487] In some embodiments, the determining module 1701 is further configured to:

[0488] Determine an uplink frequency domain bandwidth;

[0489] Determine multiple downlink frequency domain bandwidth groups corresponding to an uplink frequency domain bandwidth; wherein, the HARQ-ACK information of the channel on each downlink frequency domain bandwidth in the multiple downlink frequency domain bandwidth groups is fed back in an uplink frequency domain bandwidth;

[0490] Determine one or more frequency domain bandwidth groups from multiple downlink frequency domain bandwidth groups;

[0491] On an uplink frequency bandwidth, one or more HARQ-ACK codewords corresponding to one or more frequency bandwidth groups are fed back to the second communication node; each frequency bandwidth group in the one or more frequency bandwidth groups corresponds to one HARQ-ACK codeword in the one or more HARQ-ACK codewords.

[0492] In some embodiments, the communication module 1702 is further configured to receive control information from a second communication node on the first link; the control information includes information related to the second link, and the second link includes a communication link between the first communication node and one or more third communication nodes;

[0493] The control information includes at least one of the following:

[0494] The correspondence between the index of the data received by the first communication node on the first link or the third link and the resources on the second link; the correspondence between the resources on the second link and the transmission adjustment amount; the correspondence between the index of the data received by the first communication node on the first link or the third link and the transmission adjustment amount on the second link; the correspondence between the index of the data received by the first communication node on the first link or the third link and the index of one or more third communication nodes.

[0495] The third link is the communication link between the fourth communication node and the first communication node; the resources include at least one of the following: time domain resources, frequency domain resources, code domain resources, and spatial domain resources; the transmission adjustment includes at least one of the following: time domain adjustment, phase adjustment, amplitude adjustment, frequency adjustment, and power adjustment.

[0496] In some embodiments, the communication module 1702 is further configured to receive a physical broadcast channel, which includes a demodulation reference signal but does not include a frame number index.

[0497] For a more detailed description of the aforementioned determining module 1701, communication module 1702, and their respective technical features, as well as the description of their beneficial effects, please refer to the corresponding method embodiment section above, which will not be repeated here.

[0498] Figure 18 is a schematic diagram of the composition of a communication device provided in an embodiment of this disclosure. As shown in Figure 18, the communication device 1800 can be applied to a second communication node and includes a determination module 1801 and a communication module 1802.

[0499] The determining module 1801 is used to determine the communication mode corresponding to the first communication node, wherein the communication mode belongs to a communication mode set, and the communication mode set includes at least the first communication mode;

[0500] The communication module 1802 is used to communicate with the first communication node based on the communication mode corresponding to the first communication node.

[0501] In some embodiments, the communication module 1802 is further configured to receive HARQ-ACK information corresponding to a Hybrid Automatic Repeat Request for a plurality of downlink data channels sent by the first communication node; wherein, different downlink data channels among the plurality of downlink data channels occupy different resources, including time-domain resources and / or frequency-domain resources.

[0502] In some embodiments, the communication module 1802 is further configured to:

[0503] Multiple physical downlink control channels (PDCCHs) are transmitted, with each PDCCH scheduling at least one data channel.

[0504] Multiple PDCCHs satisfy at least one of the following:

[0505] The scheduling information for the data channel is determined based on multiple PDCCHs;

[0506] Multiple PDCCHs are used to schedule multiple data channels; each of the multiple data channels is determined based on at least two of the multiple PDCCHs.

[0507] Different PDCCHs among multiple PDCCHs differ in at least one parameter.

[0508] In some embodiments, the set of communication modes further includes a second communication mode; wherein the first communication mode and the second communication mode differ in at least one of the following aspects:

[0509] Channel state information related parameters, MCS determination method, frequency domain resource determination method for data channel, characteristics of frequency domain resource set included in BWP, scheduling method of physical downlink control channel, power control method, HARQ-ACK information, mobility measurement reporting method, paging method, measurement gap processing method, timing advance determination method, downlink synchronization signal parameters, positioning related parameters, CP length related parameters.

[0510] In some embodiments, the determining module 1801 is specifically used for:

[0511] Receive indication information sent by the first communication node; wherein, the indication information is used to indicate the communication mode corresponding to the first communication node as determined by the first communication node;

[0512] Receive the status information of the first communication node sent by the first communication node, the status information including the type selected by the first communication node for determining the first communication node;

[0513] Send signaling to the first communication node, and determine the communication mode based on the signaling;

[0514] The communication mode is determined according to the agreed rules.

[0515] For a more detailed description of the aforementioned determining module 1801, communication module 1802, and their respective technical features, as well as the description of their beneficial effects, please refer to the corresponding method embodiment section above, which will not be repeated here.

[0516] Figure 19 is a schematic diagram of the composition of a communication device provided in an embodiment of this disclosure. As shown in Figure 19, the communication device 1900 can be applied to a first communication node and includes a receiving module 1901.

[0517] The receiving module 1901 is configured to receive control information from a second communication node on a first link; the control information includes information in a broadcast channel, and / or the control information includes information related to the second link, wherein the second link includes a communication link between the first communication node and one or more third communication nodes; the information related to the second link includes at least one of the following:

[0518] The correspondence between the index of the data received by the first communication node on the first link or the third link and the resources on the second link; the correspondence between the resources on the second link and the transmission adjustment amount; the correspondence between the index of the data received by the first communication node on the first link or the third link and the transmission adjustment amount on the second link; and the correspondence between the index of the data received by the first communication node on the first link or the third link and the index of one or more third communication nodes.

[0519] The third link is the link between the fourth communication node and the first communication node; the resources include at least one of the following: time domain resources, frequency domain resources, code domain resources, and spatial domain resources; the transmission adjustment includes at least one of the following: time domain adjustment, phase adjustment, amplitude adjustment, frequency adjustment, and power adjustment.

[0520] For a more detailed description of the receiving module 1901, its various technical features, and its beneficial effects, please refer to the corresponding method embodiment section above, which will not be repeated here.

[0521] Figure 20 is a schematic diagram of the composition of a communication device provided in an embodiment of this disclosure. As shown in Figure 20, the communication device 2000 can be applied to a second communication node and includes a transmitting module 2001.

[0522] The sending module 2001 is used to send control information to the first communication node on the first link;

[0523] The control information is included in the broadcast channel, and / or the control information includes information related to the second link, wherein the second link includes a communication link between the first communication node and one or more third communication nodes; the information related to the second link includes at least one of the following:

[0524] The correspondence between the index of the data received by the first communication node on the first link or the third link and the resources on the second link; the correspondence between the resources on the second link and the transmission adjustment amount; the correspondence between the index of the data received by the first communication node on the first link or the third link and the transmission adjustment amount on the second link; and the correspondence between the index of the data received by the first communication node on the first link or the third link and the index of one or more third communication nodes.

[0525] The third link is the link between the fourth communication node and the first communication node; the resources include at least one of the following: time domain resources, frequency domain resources, code domain resources, and spatial domain resources; the transmission adjustment includes at least one of the following: time domain adjustment, phase adjustment, amplitude adjustment, frequency adjustment, and power adjustment.

[0526] For a more detailed description of the aforementioned sending module 2001, as well as a more detailed description of its various technical features and beneficial effects, please refer to the corresponding method embodiment section above, which will not be repeated here.

[0527] It should be noted that the modules in Figures 17-20 can also be called units; for example, a communication module can be called a communication unit. Furthermore, in the embodiments shown in Figures 17-20, the names of the modules may not be those shown in the figures.

[0528] If the units or modules in Figures 17-20 are implemented as software functional modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the embodiments of this disclosure, in essence, or the parts that contribute to the prior art, or all or part of the technical solutions, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute all or part of the steps of the methods of the various embodiments of this disclosure. Storage media for storing computer software products include: USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, optical disks, and other media capable of storing program code.

[0529] When the functions of the integrated modules described above are implemented in hardware, this disclosure provides a schematic diagram of a communication device, which may include any one of the communication devices shown in Figures 17-20. As shown in Figure 21, the communication device 2100 includes: a processor 2102, a communication interface 2103, and a bus 2104. Optionally, the communication device 2100 may also include a memory 2101.

[0530] Processor 2102 may implement or execute various exemplary logic blocks, modules, and circuits described in connection with this disclosure. Processor 2102 may be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It may implement or execute various exemplary logic blocks, modules, and circuits described in connection with this disclosure. Processor 2102 may also be a combination that implements computing functions, such as including one or more microprocessor combinations, a combination of a DSP and a microprocessor, etc.

[0531] The communication interface 2103 is used to connect with other devices via a communication network. This communication network can be Ethernet, wireless access network, wireless local area network (WLAN), etc.

[0532] The memory 2101 may be a read-only memory (ROM) or other type of static storage device capable of storing static information and instructions, random access memory (RAM) or other type of dynamic storage device capable of storing information and instructions, or electrically erasable programmable read-only memory (EEPROM), disk storage medium or other magnetic storage device, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but is not limited thereto.

[0533] As one possible implementation, the memory 2101 can exist independently of the processor 2102. The memory 2101 can be connected to the processor 2102 via a bus 2104 and is used to store instructions or program code. When the processor 2102 calls and executes the instructions or program code stored in the memory 2101, it can implement the method provided in the embodiments of this disclosure.

[0534] In another possible implementation, the memory 2101 can also be integrated with the processor 2102.

[0535] Bus 2104 can be an extended industry standard architecture (EISA) bus, etc. Bus 2104 can be divided into address bus, data bus, control bus, etc. For ease of illustration, only one thick line is used to represent it in Figure 21, but this does not mean that there is only one bus or one type of bus.

[0536] Through the above description of the implementation methods, those skilled in the art can clearly understand that, for the sake of convenience and brevity, only the division of the above functional modules is used as an example. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the equipment or device can be divided into different functional modules to complete all or part of the functions described above.

[0537] This disclosure also provides a computer-readable storage medium. All or part of the processes in the above method embodiments can be executed by computer instructions instructing related hardware. The program can be stored in the computer-readable storage medium, and when executed, it can include the processes of the above method embodiments. The computer-readable storage medium can be any of the foregoing embodiments or memory. The computer-readable storage medium can also be an external storage device for the above-described device or apparatus, such as a plug-in hard drive, smart media card (SMC), secure digital (SD) card, flash card, etc., equipped on the above-described device or apparatus. Further, the computer-readable storage medium can include both internal storage units and external storage devices of the above-described device or apparatus. The computer-readable storage medium is used to store the above-described computer program and other programs and data required by the above-described device or apparatus. The computer-readable storage medium can also be used to temporarily store data that has been output or will be output.

[0538] This disclosure also provides a computer program product comprising a computer program that, when run on a computer, causes the computer to perform any of the methods provided in the above embodiments.

[0539] Although this disclosure has been described herein in conjunction with various embodiments, those skilled in the art will understand and implement other variations of the disclosed embodiments by reviewing the accompanying drawings, the disclosure, and the appended claims in carrying out the claimed disclosure. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "an" does not exclude a plurality. A single processor or other unit can implement several functions listed in the claims. While different dependent claims may recite certain measures, this does not mean that these measures cannot be combined to produce a good effect.

[0540] Although this disclosure has been described in conjunction with specific features and embodiments, it will be apparent that various modifications and combinations can be made therein without departing from the spirit and scope of this disclosure. Accordingly, this specification and drawings are merely exemplary illustrations of the disclosure as defined by the appended claims and are to be considered as covering any and all modifications, variations, combinations, or equivalents within the scope of this disclosure. It is obvious that those skilled in the art can make various alterations and modifications to this disclosure without departing from its spirit and scope. Thus, this disclosure is also intended to include any such modifications and modifications that fall within the scope of the claims of this disclosure and their equivalents.

[0541] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any changes or substitutions within the technical scope disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A communication method, characterized in that, Applied to a first communication node, the method includes: Determine the communication mode corresponding to the first communication node, wherein the communication mode belongs to a communication mode set, and the communication mode set includes at least the first communication mode; The first communication node communicates with the second communication node based on the communication mode corresponding to it.

2. The method according to claim 1, characterized in that, The predetermined parameters of the communication mode are determined according to at least one of the following: Radio Resource Control (RRC) messages, Media Access Control (MAC) control elements, and First Physical Downlink Control Channel; The predetermined parameters include first information about the modulation and coding scheme (MCS), second information about the frequency domain resources occupied by the data channel, and at least one of the demodulation reference signal set to which the demodulation reference signal of the data channel belongs.

3. The method according to claim 2, characterized in that, When the predetermined parameters include the first information of the MCS, the second physical downlink control channel for scheduling the data channel does not include a bit field for determining the MCS; or, The second physical downlink control channel for scheduling the data channel includes an MCS adjustment amount, which is an adjustment amount relative to the MCS determined based on the first information of the MCS.

4. The method according to claim 2, characterized in that, When the predetermined parameters include second information about the frequency domain resources occupied by the data channel, the second physical downlink control channel for scheduling the data channel does not include information related to the frequency domain resources; or, The second physical downlink control channel for scheduling the data channel includes at least one of the following: the number of physical resource blocks included in the frequency domain resource, and the location information of the frequency domain resource in the frequency domain resource set; wherein, the second information of the frequency domain resource occupied by the data channel includes relevant information of the frequency domain resource set to which the frequency domain resource belongs.

5. The method according to claim 1, characterized in that, The frequency domain resource blocks in the bandwidth portion of the BWP are non-contiguous.

6. The method according to claim 1, characterized in that, The scheduling method of the data channel of the first communication node includes: a scheduling method in which one data channel is scheduled by multiple physical downlink control channels (PDCCH).

7. The method according to claim 6, characterized in that, The plurality of PDCCHs satisfy at least one of the following: The scheduling information for the data channel is determined based on the plurality of PDCCHs; The plurality of PDCCHs are used to schedule a plurality of data channels; wherein each of the plurality of data channels is determined based on at least two of the plurality of PDCCHs; The different PDCCHs among the plurality of PDCCHs differ in at least one parameter.

8. The method according to claim 6, characterized in that, The plurality of PDCCHs includes at least a first PDCCH and a second PDCCH, wherein the first PDCCH and the second PDCCH satisfy at least one of the following: One first PDCCH corresponds to one or more second PDCCHs, and the data channel is scheduled by one first PDCCH and one second PDCCH; The validity duration of the information in the first PDCCH is different from the validity duration of the information in the second PDCCH; The resources occupied by the second PDCCH are determined based on the first PDCCH; The information in the first PDCCH applies to the data channels in the first data channel set, and the information in the second PDCCH applies to the data channels in the second data channel set; wherein, the first data channel set includes one or more data channels, and the second data channel set includes one or more data channels; The first PDCCH and the second PDCCH respectively include a first group of information and a second group of information of the same data channel; wherein at least one piece of information in the first group of information and the second group of information is different.

9. The method according to claim 8, characterized in that, The data channel satisfies at least one of the following: There is at least one different data channel between the data channels in the first data channel set and the data channels in the second data channel set; The data channels in the second data channel set belong to the first data channel; The first set of information in the data channel includes at least one of the following: frequency domain resource set, MCS, demodulation reference signal DMRS port set, and transmission configuration indication TCI. The second set of information in the data channel includes: indication information for selecting one or more frequency domain resources from the frequency domain resource set notified in the first PDCCH; the time domain resource where the data channel is located; the adjustment amount of the MCS of the data channel relative to the MCS notified in the first PDCCH; selection information for selecting one or more DMRS ports from the DMRS port set notified in the first PDCCH; DMRS information of the multi-user MU; rate matching information; power control information; and at least one of the following: whether the predetermined resources include the indication information of the data channel.

10. The method according to claim 1, characterized in that, Power control information is not included in the PDCCH used to schedule data channels.

11. The method according to claim 1, characterized in that, The method further includes: Send HARQ-ACK information corresponding to a Hybrid Automatic Repeat Request for multiple downlink data channels; wherein, different downlink data channels among the multiple downlink data channels occupy different resources, the resources including time domain resources and / or frequency domain resources.

12. The method according to claim 11, characterized in that, The corresponding HARQ-ACK information of the multiple downlink data channels is used to indicate whether there is a negative NACK information among the multiple HARQ-ACKs of the multiple downlink data channels; And / or, The HARQ-ACK information corresponding to the multiple downlink data channels is information determined by multiple HARQ-ACK results of the multiple downlink data channels through a preset calculation method.

13. The method according to claim 11, characterized in that, The transmission of a corresponding HARQ-ACK message for multiple downlink data channels includes: When a corresponding HARQ-ACK message for one of the plurality of downlink data channels is NACK, the first communication node sends at least one of the following messages to the second communication node: NACK information; indication information used to indicate the plurality of downlink data channels, wherein the HARQ-ACK result of the plurality of downlink data channels is NACK.

14. The method according to claim 11, characterized in that, The plurality of downlink data channels satisfy at least one of the following: The resources occupied by the multiple downlink data channels belong to the same frequency domain bandwidth, or the same frequency domain bandwidth group, or the same frequency domain resource set. The downlink control channels used to schedule the multiple downlink data channels belong to the same downlink control channel group; The multiple downlink data channels are associated with the same quasi-co-address parameters; The multiple downlink data channels are located in a predetermined resource window; The multiple downlink data channels are associated with the same MCS; The multiple downlink data channels are associated with the same set of demodulation reference signals; The HARQ-ACKs for the multiple downlink data channels need to be fed back in the same time unit or in the same channel; or The multiple downlink data channels include different downlink data, and each of the multiple downlink data channels corresponds to a HARQ-ACK result.

15. The method according to claim 1, characterized in that, For the same HARQ process within the same serving cell, the first communication node can receive the second PDSCH before the HARQ-ACK feedback time of the scheduled first PDSCH.

16. The method according to claim 1, characterized in that, The method further includes: Determine an uplink frequency domain bandwidth; Determine multiple downlink frequency domain bandwidth groups corresponding to the one uplink frequency domain bandwidth; wherein, the HARQ-ACK information of the channel on each downlink frequency domain bandwidth in the multiple downlink frequency domain bandwidth groups is fed back in the one uplink frequency domain bandwidth; One or more frequency domain bandwidth groups are determined from the plurality of downlink frequency domain bandwidth groups; Feedback is made to the second communication node on one uplink frequency bandwidth corresponding to one or more determined frequency bandwidth groups; each frequency bandwidth group in the one or more frequency bandwidth groups corresponds to one HARQ-ACK codeword in the one or more HARQ-ACK codewords.

17. The method according to claim 16, characterized in that, The step of feeding back one or more HARQ-ACK codewords corresponding to the determined one or more frequency domain bandwidth groups to the second communication node on the one uplink frequency domain bandwidth includes: In a time unit and / or in a channel, the one or more HARQ-ACK codewords are fed back to the second communication node over the one uplink frequency domain bandwidth; wherein the one or more frequency domain bandwidths are determined according to at least one of the following: the one time unit, the one channel.

18. The method according to any one of claims 1-17, characterized in that, Determining the communication mode corresponding to the first communication node includes: The communication mode corresponding to the first communication node is determined to be the first communication mode.

19. The method according to any one of claims 1-17, characterized in that, The set of communication modes further includes a second communication mode; wherein the first communication mode and the second communication mode differ in at least one of the following aspects: Channel state information related parameters, MCS determination method, frequency domain resource determination method for data channel, characteristics of frequency domain resource set included in BWP, scheduling method of physical downlink control channel, power control method, HARQ-ACK information transmission method, mobility measurement reporting method, paging method, measurement gap processing method, timing advance determination method, downlink synchronization signal parameters, positioning related parameters, cyclic prefix (CP) length related parameters.

20. The method according to claim 19, characterized in that, When the communication mode corresponding to the first communication node is the second communication mode, at least one of the following conditions must be met: Send multiple HARQ-ACK messages for multiple downlink data channels, wherein each downlink data channel corresponds to one of the multiple HARQ-ACK messages; For the same HARQ process within the same serving cell, the first communication node receives the second PDSCH at a time no earlier than the HARQ-ACK feedback time of the scheduled first PDSCH. The data channel of the first communication node is scheduled in a manner where one data channel is scheduled by one PDCCH. The frequency domain resource blocks in BWP are contiguous; The PDCCH of the scheduling data channel includes power control information.

21. The method according to any one of claims 1-17, characterized in that, The communication mode set includes the first communication mode and the second communication mode, and determining the communication mode corresponding to the first communication node includes at least one of the following: Send indication information to the second communication node; wherein, the indication information is used to indicate the communication mode corresponding to the first communication node as determined by the first communication node; The status information of the first communication node is sent to the second communication node, and there is a corresponding relationship between the status information and the communication mode of the first communication node; Send the type information of the first communication node to the second communication node, wherein there is a corresponding relationship between the type information and the communication mode of the first communication node; Receive signaling from the second communication node, and determine the communication mode based on the signaling; The communication mode is determined according to the agreed rules.

22. The method according to any one of claims 1-17, characterized in that, The communication mode satisfies at least one of the following: The first communication node corresponds to only one communication mode in the set of communication modes; The communication mode is the communication mode corresponding to the first communication node in a time period, and the first communication node corresponds to different communication modes in the communication mode set in multiple time periods; There is a correspondence between the communication mode and the type of the first communication node. The first communication node corresponds to only one type, or the first communication node corresponds to multiple types in multiple time periods. The first communication mode corresponds to the first communication node of the first type, and the second communication mode corresponds to the first communication node of the second type.

23. The method according to claim 21 or 22, characterized in that, The first communication node belongs to a type set, which includes at least a first type and a second type. The first communication node of the first type has a moving speed less than or equal to a first speed threshold, and the first communication node of the second type has a moving speed greater than or equal to a second speed threshold.

24. The method according to claim 1, characterized in that, When a first communication node corresponds to multiple communication modes in the set of communication modes in multiple time periods, the method further includes: Send multiple sets of capability information; wherein the multiple sets of capability information correspond to the multiple communication modes of the first communication node.

25. The method according to claim 1, characterized in that, The method further includes: The control information received from the second communication node is received on the first link; the control information includes information related to the second link, which includes a communication link between the first communication node and one or more third communication nodes. The control information mentioned above includes at least one of the following: The correspondence between the index of the data received by the first communication node on the first link or the third link and the resources on the second link; the correspondence between the resources on the second link and the transmission adjustment amount; the correspondence between the index of the data received by the first communication node on the first link or the third link and the transmission adjustment amount on the second link; the correspondence between the index of the data received by the first communication node on the first link or the third link and the index of the one or more third communication nodes; The third link is the communication link between the fourth communication node and the first communication node; the resources include at least one of the following: time domain resources, frequency domain resources, code domain resources, and spatial domain resources; the transmission adjustment amount includes at least one of the following: time domain adjustment amount, phase adjustment amount, amplitude adjustment amount, frequency adjustment amount, and power adjustment amount.

26. The method according to claim 25, characterized in that, The control information includes at least one of the following: physical layer control information and media access control (MAC) layer control information.

27. The method according to claim 1, characterized in that, The method further includes: Receive physical broadcast channel, which includes demodulation reference signal but does not include frame number index.

28. A communication method, characterized in that, Applied to a second communication node, the method includes: Determine the communication mode corresponding to the first communication node, wherein the communication mode belongs to a communication mode set, and the communication mode set includes at least the first communication mode; Communicate with the first communication node based on the communication mode corresponding to the first communication node.

29. The method according to claim 28, characterized in that, The method further includes: The system receives HARQ-ACK information corresponding to a Hybrid Automatic Repeat Request for multiple downlink data channels sent by the first communication node; wherein, different downlink data channels among the multiple downlink data channels occupy different resources, and the resources include time-domain resources and / or frequency-domain resources.

30. The method according to claim 28, characterized in that, Determining the communication mode corresponding to the first communication node includes: Send multiple physical downlink control channels (PDCCHs), wherein the multiple PDCCHs schedule at least one data channel; The plurality of PDCCHs satisfy at least one of the following: The scheduling information for the data channel is determined based on the plurality of PDCCHs; The plurality of PDCCHs are used to schedule a plurality of data channels; wherein each of the plurality of data channels is determined based on at least two of the plurality of PDCCHs; The different PDCCHs among the plurality of PDCCHs differ in at least one parameter.

31. The method according to any one of claims 28-30, characterized in that, The set of communication modes further includes a second communication mode; wherein the first communication mode and the second communication mode differ in at least one of the following aspects: Channel state information related parameters, determination method of modulation and coding scheme (MCS), determination method of frequency domain resources occupied by data channel, characteristics of frequency domain resource set included in bandwidth portion (BWP), scheduling method of physical downlink control channel, power control method, transmission method of HARQ-ACK information, reporting method of mobility measurement, paging method, processing method of measurement gap, determination method of timing advance, parameters of downlink synchronization signal, positioning related parameters, and parameters related to cyclic prefix (CP) length.

32. The method according to any one of claims 28-30, characterized in that, The communication mode set includes multiple communication modes, and determining the communication mode corresponding to the first communication node includes at least one of the following: Receive indication information sent by the first communication node; wherein, the indication information is used to indicate the communication mode corresponding to the first communication node as determined by the first communication node; The status information of the first communication node sent by the first communication node is received, and there is a corresponding relationship between the status information and the communication mode of the first communication node. The system receives the type information of the first communication node sent by the first communication node, and the type information corresponds to the communication mode of the first communication node. Send signaling to the first communication node, and determine the communication mode based on the signaling; The communication mode is determined according to the agreed rules.

33. The method according to any one of claims 28-30, characterized in that, The set of communication modes includes multiple communication modes, and each communication mode satisfies at least one of the following: There are two first communication nodes, and the two first communication nodes correspond to different communication modes in the communication mode set, with one first communication node corresponding to one communication mode; The communication mode is a communication mode corresponding to the first communication node in a time period, and the first communication node corresponds to different communication modes in the communication mode set in multiple time periods; There is a correspondence between the communication mode and the type of the first communication node, with one first communication node corresponding to one type of the first communication node; Alternatively, a first communication node may correspond to different types at different time periods, wherein the first communication mode corresponds to the first communication node of the first type, and the second communication mode corresponds to the first communication node of the second type.

34. The method according to any one of claims 28-30, characterized in that, The method further includes: Receive multiple sets of capability information sent by the first communication node; wherein the multiple sets of capability information correspond to multiple communication modes of the first communication node.

35. A communication method, characterized in that, Applied to a first communication node, the method includes: Control information is received from a second communication node on a first link; the control information includes information broadcast in a broadcast channel, and / or the control information includes information related to the second link, wherein the second link includes a communication link between the first communication node and one or more third communication nodes; the information related to the second link includes at least one of the following: The correspondence between the index of the data received by the first communication node on the first link or the third link and the resources on the second link; the correspondence between the resources on the second link and the transmission adjustment amount; the correspondence between the index of the data received by the first communication node on the first link or the third link and the transmission adjustment amount on the second link; and the correspondence between the index of the data received by the first communication node on the first link or the third link and the index of the one or more third communication nodes. The third link is the link between the fourth communication node and the first communication node; the resources include at least one of the following: time domain resources, frequency domain resources, code domain resources, and spatial domain resources; the transmission adjustment amount includes at least one of the following: time domain adjustment amount, phase adjustment amount, amplitude adjustment amount, frequency adjustment amount, and power adjustment amount.

36. The method according to claim 35, characterized in that, When the control information is included in a physical broadcast channel, the physical broadcast channel includes a demodulation reference signal but does not include a frame number index.

37. The method according to claim 35, characterized in that, The control information includes at least one of the following: physical layer control information and media access control (MAC) layer control information.

38. A communication method, characterized in that, Applied to a second communication node, the method includes: Sending control information to a first communication node on a first link, the control information including information broadcast in a broadcast channel, and / or the control information including information related to a second link, wherein the second link includes a communication link between the first communication node and one or more third communication nodes; the information related to the second link includes at least one of the following: The correspondence between the index of the data received by the first communication node on the first link or the third link and the resources on the second link; the correspondence between the resources on the second link and the transmission adjustment amount; the correspondence between the index of the data received by the first communication node on the first link or the third link and the transmission adjustment amount on the second link; and the correspondence between the index of the data received by the first communication node on the first link or the third link and the index of the one or more third communication nodes. The third link is the link between the fourth communication node and the first communication node; the resources include at least one of the following: time domain resources, frequency domain resources, code domain resources, and spatial domain resources; the transmission adjustment amount includes at least one of the following: time domain adjustment amount, phase adjustment amount, amplitude adjustment amount, frequency adjustment amount, and power adjustment amount.

39. The method according to claim 38, characterized in that, When the control information is included in a physical broadcast channel, the physical broadcast channel includes a demodulation reference signal but does not include a frame number index.

40. A communication device, characterized in that, include: Memory and processor; Memory and processor are coupled; The memory is used to store instructions that can be executed by the processor; When the processor executes the instructions, it performs the method as described in any one of claims 1 to 39.

41. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that, when executed on a computer, cause the computer to perform the method as described in any one of claims 1 to 39.

42. A computer program product, characterized in that, The computer program product includes computer instructions that, when executed on a computer, cause the computer to perform the method as described in any one of claims 1 to 39.

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