Information transmission method and communication device

Abstract

The invention provides an information transmission method and a communication device. The method comprises: a terminal receiving first information from a network device, the first information being used for configuring a first reference signal resource, the first information comprising first indication information and second indication information, the first indication information being used for indicating a candidate reference signal resource set, and the second indication information being used for indicating a candidate reference signal resource set; the first reference signal resource and a second reference signal resource in the candidate reference signal resource set are quasi-co-located, and the second indication information is used for indicating the change period duration of the reference signal resource quasi-co-located with the first reference signal resource. And the terminal determines that the reference signal resource which is quasi-co-located with the first reference signal resource after the period duration is updated to a third reference signal resource in the candidate reference signal resource set. The signaling overhead can be reduced, and the indication efficiency of quasi-co-location resources can be improved.

Description

Technical Field

[0001] The present application relates to the field of communications, and more specifically, to an information transmission method and a communication device. Background Art

[0002] Compared with terrestrial communications, satellite communications have a wider coverage area. In mobile communication systems, satellites can be used as access network devices to provide communication services to some areas such as oceans and forests. In addition, satellites as access network devices are not easily affected by natural disasters or external forces, and have high reliability, which can provide communication guarantees when natural disasters occur.

[0003] Unlike ground access network equipment, satellites move at a higher speed relative to the ground. The communication mechanism currently designed for communication between ground access network equipment and terminals may have problems such as high signaling overhead and low efficiency when applied to communication between satellites and terminals. Summary of the invention

[0004] The embodiments of the present application provide an information transmission method and a communication device, which can reduce resource waste and improve resource utilization.

[0005] In a first aspect, an information transmission method is provided, which can be executed by a terminal or a module (such as a chip or a chip system) configured in (or used for) a terminal. The following description is made by taking the terminal executing the method as an example.

[0006] The method includes: a terminal receives first information from a network device, the first information is used to configure a first reference signal resource, the first information includes first indication information and second indication information, the first indication information is used to indicate a candidate reference signal resource set, the first reference signal resource is quasi-co-located with a second reference signal resource in the candidate reference signal resource set, and the second indication information is used to indicate a change period duration of a reference signal resource quasi-co-located with the first reference signal resource. The terminal determines that after the period duration, the reference signal resource quasi-co-located with the first reference signal resource is updated to a third reference signal resource in the candidate reference signal resource set.

[0007] According to the above scheme, when the network device is a satellite, since the satellite moves according to a fixed orbit, the displacement relative to the ground is predictable. Therefore, the network device can predict the change of the reference signal resource that is quasi-co-located with the first reference signal resource. The present application proposes that when the network device configures the first reference signal resource for the terminal, it can pre-configure the set of quasi-co-located candidate reference signal resources corresponding to the first reference signal resource through the first information, and one of the reference signal resources is the reference signal resource that is currently quasi-co-located with the first reference signal resource. The network device also indicates the update cycle duration of the quasi-co-located reference signal resource to the terminal, and the terminal can update the reference signal resource that is quasi-co-located with the first reference signal resource according to the cycle duration. It can avoid reconfiguring the first reference signal resource every time the quasi-co-located relationship changes, can reduce signaling overhead, and improve indication efficiency.

[0008] Exemplarily, the first information may configure multiple TCI states for the first reference signal resource, each TCI state indicating at least one reference signal resource. The reference signal resources indicated by the multiple TCI states constitute a set of quasi-co-located candidate reference signal resources corresponding to the first reference signal resource. Each TCI state may also indicate the QCL type corresponding to the reference signal resource indicated by it, and the channel characteristic parameters corresponding to the reference signal resource may be determined by the QCL type. For example, the QCL type may be one of QCL types A to D.

[0009] In combination with the first aspect, in some implementations of the first aspect, the second reference signal resource is the first reference signal resource, the last reference signal resource in the candidate reference signal resource set, or a reference signal resource corresponding to an identifier indicated by the first indication information.

[0010] In combination with the first aspect, in certain implementations of the first aspect, the order of changing the reference signal resources in the candidate reference signal resource set that are quasi-co-located with the first reference signal resource is predefined or indicated by the first information.

[0011] According to the above solution, the network device and the terminal can reach a consensus on the reference signal resource that is quasi-co-located with the first reference signal resource, thereby reducing the situation where the communication quality is affected by the failure to reach a consensus.

[0012] In combination with the first aspect, in some implementations of the first aspect, the first indication information is further used to indicate a channel characteristic parameter corresponding to each reference signal resource in the set of candidate reference signal resources that are quasi-co-located with the first reference signal resource.

[0013] According to the above scheme, the terminal can determine through the first indication information which specific channel characteristics of the reference signal resources in the specific candidate reference resource set are quasi-co-located with the first reference signal resource, so that the terminal can send or receive the reference signal on the first reference signal resource based on the specific quasi-co-located channel characteristic parameters.

[0014] In combination with the first aspect, in some implementations of the first aspect, the method further includes: before the cycle duration, the terminal communicates and transmits with the network device according to the channel characteristic parameters of the second reference signal resource. After the cycle duration, the terminal communicates and transmits with the network device according to the channel characteristic parameters corresponding to the third reference signal resource. The communication and transmission with the network device includes transmitting a reference signal on the first reference signal resource, and / or includes data transmission with the network device.

[0015] The first reference signal resource may be an uplink reference signal resource, and the transmission reference signal may be a reference signal sent by the terminal to the network device on the first reference signal resource. The first reference signal resource may be a downlink reference signal resource, and the transmission reference signal may be a reference signal received by the terminal from the network device on the first reference signal resource. The transmission data may be downlink data sent by the network device to the terminal, or uplink data sent by the terminal to the network device.

[0016] In combination with the first aspect, in some implementations of the first aspect, the first reference signal resource is an uplink reference signal resource, the first information further includes third indication information, the third indication information is used to indicate a candidate power control parameter set, and the power control parameter corresponding to the first reference signal resource is a first power control parameter in the candidate power control parameter set. And, the method further includes: the terminal determines that after the cycle duration, the power control parameter corresponding to the first reference signal resource is changed to a second power control parameter in the candidate power control parameter set.

[0017] According to the above solution, the network device configures the candidate power control parameter set of the first reference signal resource to the terminal, and the terminal can periodically update the power control parameter of the first reference signal resource according to the change period duration indicated by the network device. It can avoid the network device sending information for reconfiguration every time the power control parameter of the first reference signal resource changes, which can reduce signaling overhead and improve indication efficiency.

[0018] In combination with the first aspect, in certain implementations of the first aspect, the first power control parameter is the first power control parameter, the last power control parameter in the candidate reference signal resource set, or the power control parameter indicated by the first information.

[0019] In combination with the first aspect, in certain implementations of the first aspect, the method also includes: before the cycle duration, the terminal sends a reference signal on the first reference signal resource according to the first power control parameter; after the cycle duration, the terminal sends a reference signal on the first reference signal resource according to the second power control parameter.

[0020] According to the above solution, the network device and the terminal can reach a consensus on the reference signal resource that is quasi-co-located with the first reference signal resource, thereby reducing the situation where the communication quality is affected by the failure to reach a consensus.

[0021] In a second aspect, an information transmission method is provided, which can be executed by a network device or a module (such as a chip or a chip system) configured in (or used for) a network device. The following description is given by taking the network device executing the method as an example.

[0022] The method includes: a network device determines first information, the first information is used to configure a first reference signal resource, the first information includes first indication information and second indication information, the first indication information is used to indicate a candidate reference signal resource set, the first reference signal resource is quasi-co-located with a second reference signal resource in the candidate reference signal resource set, and the second indication information is used to indicate a change period duration of a reference signal resource quasi-co-located with the first reference signal resource. The network device sends the first information to a terminal.

[0023] According to the above scheme, when the network device configures the first reference signal resource for the terminal, it can pre-configure a set of candidate reference signal resources that are quasi-co-located with the first reference signal resource, one of which is a reference signal resource that is currently quasi-co-located with the first reference signal resource. The network device can indicate a reference signal resource in the configured candidate reference signal resource set through signaling, and notify the terminal of the updated reference signal resource that is quasi-co-located with the first reference signal resource. It can avoid reconfiguring the first reference signal resource every time the quasi-co-location relationship changes, can reduce signaling overhead, and improve indication efficiency.

[0024] In combination with the second aspect, in some implementations of the second aspect, the second reference signal resource is the first reference signal resource, the last reference signal resource in the candidate reference signal resource set, or a reference signal resource corresponding to an identifier indicated by the first indication information.

[0025] In combination with the second aspect, in certain implementations of the second aspect, the order of changing the reference signal resources in the candidate reference signal resource set that are quasi-co-located with the first reference signal resource is predefined or indicated by the first information.

[0026] In combination with the second aspect, in certain implementations of the second aspect, the first indication information is further used to indicate a channel characteristic parameter corresponding to each reference signal resource in the set of candidate reference signal resources that are quasi-co-located with the first reference signal resource.

[0027] In combination with the second aspect, in certain implementations of the second aspect, the first reference signal resource is an uplink reference signal resource, the first information also includes third indication information, the third indication information is used to indicate a candidate power control parameter set, the power control parameter corresponding to the first reference signal resource is the first power control parameter in the candidate power control parameter set, and the power control parameter corresponding to the first reference signal resource is changed to the second power control parameter in the candidate power control parameter set after the cycle duration.

[0028] In combination with the second aspect, in certain implementations of the second aspect, the first power control parameter is the first power control parameter, the last power control parameter in the candidate reference signal resource set, or the power control parameter indicated by the first information.

[0029] In a third aspect, an information transmission method is provided, which can be executed by a terminal or a module (such as a chip or a chip system) configured in (or used for) a terminal. The following description is made by taking the terminal executing the method as an example.

[0030] The method includes: a terminal receives first information from a network device, the first information is used to configure a first reference signal resource, the first information includes first indication information, the first indication information is used to indicate a candidate reference signal resource set, the first reference signal resource is quasi-co-located with a second reference signal resource in the candidate reference signal resource set. The terminal receives second information from the network device, the second information is used to indicate a third reference signal resource in the candidate reference signal resource set, and the reference signal resource quasi-co-located with the first reference signal resource is changed to the third reference signal resource.

[0031] In combination with the third aspect, in certain implementations of the third aspect, the second reference signal resource is the first reference signal resource, the last reference signal resource in the candidate reference signal resource set, or a reference signal resource corresponding to an identifier indicated by the first indication information.

[0032] In combination with the third aspect, in certain implementations of the third aspect, the first indication information is further used to indicate a channel characteristic parameter corresponding to each reference signal resource in the set of candidate reference signal resources that are quasi-co-located with the first reference signal resource.

[0033] In conjunction with the third aspect, in some implementations of the third aspect, the method further includes: before receiving the second information, the terminal communicates and transmits with the network device according to the channel characteristic parameters of the second reference signal resource. After receiving the second information, the terminal communicates and transmits with the network device according to the channel characteristic parameters corresponding to the third reference signal resource.

[0034] The communication and transmission with the network device includes receiving or sending a reference signal on the first reference signal resource, and / or includes recording data transmission with the network device.

[0035] In combination with the third aspect, in some implementations of the third aspect, the first reference signal resource is an uplink reference signal resource, the first information further includes second indication information, the second indication information is used to indicate a candidate power control parameter set, the power control parameter corresponding to the first reference signal resource is a first power control parameter in the candidate power control parameter set. The second information is also used to indicate a second power control parameter in the candidate power control parameter set, and the power control parameter corresponding to the first reference signal resource is changed to the second power control parameter.

[0036] In combination with the third aspect, in certain implementations of the third aspect, the first power control parameter is the first power control parameter, the last power control parameter, or the power control parameter indicated by the first information in the candidate reference signal resource set.

[0037] In combination with the third aspect, in some implementations of the third aspect, the method further includes: before receiving the second information, the terminal sends a reference signal on the first reference signal resource according to the first power control parameter. After receiving the second information, the terminal sends a reference signal on the first reference signal resource according to the second power control parameter.

[0038] In a fourth aspect, an information transmission method is provided, which can be executed by a network device or a module (such as a chip or a chip system) configured in (or used for) a network device. The following description is given by taking the network device executing the method as an example.

[0039] The method includes: a network device sends first information to a terminal, the first information is used to configure a first reference signal resource, the first information includes first indication information, the first indication information is used to indicate a candidate reference signal resource set, the first reference signal resource is quasi-co-located with a second reference signal resource in the candidate reference signal resource set. The network device sends second information to the terminal, the second information is used to indicate a third reference signal resource in the candidate reference signal resource set, and the reference signal resource quasi-co-located with the first reference signal resource is changed to the third reference signal resource.

[0040] In combination with the fourth aspect, in certain implementations of the fourth aspect, the second reference signal resource is the first reference signal resource, the last reference signal resource in the candidate reference signal resource set, or the reference signal resource corresponding to the identifier indicated by the first indication information.

[0041] In combination with the fourth aspect, in certain implementations of the fourth aspect, the first indication information is further used to indicate a channel characteristic parameter corresponding to each reference signal resource in the set of candidate reference signal resources that are quasi-co-located with the first reference signal resource.

[0042] In combination with the fourth aspect, in some implementations of the fourth aspect, the first reference signal resource is an uplink reference signal resource, the first information further includes second indication information, the second indication information is used to indicate a candidate power control parameter set, the power control parameter corresponding to the first reference signal resource is a first power control parameter in the candidate power control parameter set. The second information is also used to indicate a second power control parameter in the candidate power control parameter set, and the power control parameter corresponding to the first reference signal resource is changed to the second power control parameter.

[0043] In combination with the fourth aspect, in certain implementations of the fourth aspect, the first power control parameter is the first power control parameter, the last power control parameter, or the power control parameter indicated by the first information in the candidate reference signal resource set.

[0044] In a fifth aspect, a communication device is provided. In one design, the device may include a module corresponding to the method / operation / step / action described in the first aspect or any one of the embodiments of the first aspect. The module may be a hardware circuit, or software, or a combination of a hardware circuit and software. In one design, the device includes: a transceiver unit, used to receive first information from a network device, the first information is used to configure a first reference signal resource, the first information includes first indication information and second indication information, the first indication information is used to indicate a candidate reference signal resource set, the first reference signal resource is quasi-co-located with a second reference signal resource in the candidate reference signal resource set, and the second indication information is used to indicate a change period duration of a reference signal resource quasi-co-located with the first reference signal resource. A processing unit is used to determine that after the period duration, the reference signal resource quasi-co-located with the first reference signal resource is updated to a third reference signal resource in the candidate reference signal resource set.

[0045] It should be understood that the first information, candidate reference signal resource set, candidate power control parameter set, etc. in the fifth aspect can refer to the description of the first aspect above and will not be repeated here.

[0046] In combination with the fifth aspect, in some implementations of the fifth aspect, the transceiver unit is further configured to receive or send a reference signal on the first reference signal resource according to the channel characteristic parameters of the second reference signal resource before the cycle duration. And, the transceiver unit is further configured to receive or send a reference signal on the first reference signal resource according to the channel characteristic parameters corresponding to the third reference signal resource after the cycle duration.

[0047] In combination with the fifth aspect, in some implementations of the fifth aspect, the first reference signal resource is an uplink reference signal resource, the first information further includes third indication information, the third indication information is used to indicate a candidate power control parameter set, and the power control parameter corresponding to the first reference signal resource is a first power control parameter in the candidate power control parameter set. The processing unit is also used to determine that after the cycle duration, the power control parameter corresponding to the first reference signal resource is changed to a second power control parameter in the candidate power control parameter set.

[0048] In combination with the fifth aspect, in some implementations of the fifth aspect, the transceiver unit is further configured to send a reference signal on the first reference signal resource according to the first power control parameter before the cycle duration. The transceiver unit is further configured to send a reference signal on the first reference signal resource according to the second power control parameter after the cycle duration.

[0049] In a sixth aspect, a communication device is provided. In one design, the device may include a module corresponding to the method / operation / step / action described in the second aspect or any one of the embodiments of the second aspect. The module may be a hardware circuit, or software, or a combination of a hardware circuit and software. In one design, the device includes: a processing unit, used to determine first information, the first information is used to configure a first reference signal resource, the first information includes first indication information and second indication information, the first indication information is used to indicate a candidate reference signal resource set, the first reference signal resource is quasi-co-located with a second reference signal resource in the candidate reference signal resource set, and the second indication information is used to indicate the change period duration of the reference signal resource quasi-co-located with the first reference signal resource. A transceiver unit is used to send the first information to a terminal.

[0050] It should be understood that the first information, candidate reference signal resource set, candidate power control parameter set, etc. in the sixth aspect can refer to the description of the second aspect above and will not be repeated here.

[0051] In a seventh aspect, a communication device is provided. In one design, the device may include a module corresponding to the method / operation / step / action described in the third aspect or any one of the embodiments of the third aspect. The module may be a hardware circuit, or software, or a combination of a hardware circuit and software. In one design, the device includes: a transceiver unit, configured to receive first information from a network device, the first information being used to configure a first reference signal resource, the first information including first indication information, the first indication information being used to indicate a set of candidate reference signal resources. A processing unit, configured to determine, based on the first information, that the first reference signal resource is quasi-co-located with a second reference signal resource in the set of candidate reference signal resources. The transceiver unit is also configured to receive second information from the network device, the second information being used to indicate a third reference signal resource in the set of candidate reference signal resources, and the reference signal resource quasi-co-located with the first reference signal resource is changed to the third reference signal resource.

[0052] It should be understood that the first information, the second information, the candidate reference signal resource set, the candidate power control parameter set, etc. in the seventh aspect can refer to the description of the third aspect above and will not be repeated here.

[0053] In conjunction with the seventh aspect, in some implementations of the seventh aspect, the transceiver unit is further configured to receive or send a reference signal on the first reference signal resource according to a channel characteristic parameter of the second reference signal resource before receiving the second information. And, the transceiver unit is further configured to receive or send a reference signal on the first reference signal resource according to a channel characteristic parameter corresponding to the third reference signal resource after receiving the second information.

[0054] In an eighth aspect, a communication device is provided. In one design, the device may include a module corresponding to the method / operation / step / action described in the fourth aspect or any one of the embodiments of the fourth aspect. The module may be a hardware circuit, or software, or a combination of a hardware circuit and software. In one design, the device includes: a processing unit, used to determine first information, the first information is used to configure a first reference signal resource, the first information includes first indication information, the first indication information is used to indicate a candidate reference signal resource set, and the first reference signal resource is quasi-co-located with a second reference signal resource in the candidate reference signal resource set. A transceiver unit is used to send the first information to a terminal. The transceiver unit is also used to send second information to the terminal, the second information is used to indicate a third reference signal resource in the candidate reference signal resource set, and the reference signal resource quasi-co-located with the first reference signal resource is changed to the third reference signal resource.

[0055] It should be understood that the first information, the second information, the candidate reference signal resource set, the candidate power control parameter set, etc. in the eighth aspect can refer to the description of the fourth aspect above and will not be repeated here.

[0056] In the ninth aspect, a communication device is provided, comprising a processor. The processor can implement the method in any possible implementation of the first to fourth aspects and the first to fourth aspects. Optionally, the communication device also includes a memory, and the processor is coupled to the memory, and can be used to execute instructions in the memory to implement the method in any possible implementation of the first to fourth aspects and the first to fourth aspects. Optionally, the communication device also includes a communication interface, and the processor is coupled to the communication interface. In an embodiment of the present application, the communication interface can be a transceiver, a pin, a circuit, a bus, a module, or other types of communication interfaces, without limitation.

[0057] In one implementation, the communication device is a communication equipment (such as a terminal or an access network device). When the communication device is a communication equipment, the communication interface may be a transceiver, or an input / output interface.

[0058] In another implementation, the communication device is a chip configured in a communication device. When the communication device is a chip configured in a communication device, the communication interface may be an input / output interface.

[0059] Optionally, the transceiver may be a transceiver circuit. Optionally, the input / output interface may be an input / output circuit.

[0060] In a tenth aspect, a processor is provided, comprising: an input circuit, an output circuit, and a processing circuit. The processing circuit is used to receive a signal through the input circuit and transmit a signal through the output circuit, so that the processor executes the method in any possible implementation of the first to fourth aspects and the first to fourth aspects.

[0061] In the specific implementation process, the processor can be one or more chips, the input circuit can be an input pin, the output circuit can be an output pin, and the processing circuit can be a transistor, a gate circuit, a trigger, and various logic circuits. The input signal received by the input circuit can be, for example, but not limited to, received and input by a receiver, and the signal output by the output circuit can be, for example, but not limited to, output to a transmitter and transmitted by the transmitter, and the input circuit and the output circuit can be the same circuit, which is used as an input circuit and an output circuit at different times. The embodiments of the present application do not limit the specific implementation methods of the processor and various circuits.

[0062] In the eleventh aspect, a computer program product is provided, which includes: a computer program (also referred to as code, or instruction), which, when executed, enables a computer to execute the method in the above-mentioned first to fourth aspects and any possible implementation of the first to fourth aspects.

[0063] In the twelfth aspect, a computer-readable storage medium is provided, which stores a computer program (also referred to as code, or instructions). When the computer-readable storage medium is run on a computer, the computer executes the method in the above-mentioned first to fourth aspects and any possible implementation of the first to fourth aspects.

[0064] In a thirteenth aspect, a communication system is provided, comprising at least one terminal as mentioned above and at least one network device as mentioned above. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] Figures 1 to 4 are different schematic diagrams of communication systems applicable to embodiments of the present application;

[0066] Figure 5 is a schematic flow chart of the information transmission method provided in the embodiment of the present application;

[0067] Figure 6 is another schematic flow chart of the information transmission method provided in an embodiment of the present application;

[0068] Figure 7 is a structural diagram of a communication device provided in an embodiment of the present application;

[0069] Figure 8 It is another structural schematic diagram of the communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0070] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0071] In the embodiment of the present application, " / " can indicate that the objects associated before and after are in an "or" relationship, for example, A / B can indicate A or B; "and / or" can be used to describe that there are three relationships between the associated objects, for example, A and / or B can indicate: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. In order to facilitate the description of the technical solution of the embodiment of the present application, in the embodiment of the present application, the words "first" and "second" can be used to distinguish. The words "first" and "second" do not limit the quantity and execution order, and the words "first" and "second" do not necessarily limit the difference. In the embodiment of the present application, the words "exemplary" or "for example" are used to indicate examples, illustrations or explanations, and any embodiment or design described as "exemplary" or "for example" should not be interpreted as being more preferred or more advantageous than other embodiments or design. The use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way for easy understanding. In the embodiments of the present application, at least one (kind) can also be described as one (kind) or more (kinds), and more (kinds) can be two (kinds), three (kinds), four (kinds) or more (kinds), and the present application does not impose any limitation.

[0072] The technical solution provided in the embodiments of the present application can be applied to the fourth generation mobile communication technology (the 4th generation, 4G) system, 5G system, NTN system, vehicle to everything (vehicle to everything, V2X), long-term evolution - vehicle network (LTE-vehicle, LTE-V), vehicle to vehicle (vehicle to vehicle, V2V), vehicle network, machine type communication (Machine Type Communications, MTC), Internet of Things (internet of things, IoT), long-term evolution - machine to machine (LTE-machine to machine, LTE-M), machine to machine (machine to machine, M2M), Internet of Things, or future mobile communication systems.

[0073] As a possible application scenario, the NTN system may include a satellite system. According to the satellite altitude, that is, the satellite orbit altitude, the satellite system can be divided into high elliptical orbit (HEO) satellites, GEO satellites, medium earth orbit (MEO) satellites and low-earth orbit (LEO) satellites. In addition, the NTN system may also include aerial network equipment such as a high altitude platform station (HAPS) communication system. The aerial network equipment involved in this application is not limited to the above examples.

[0074] As an example, see Figure 1 , showing a schematic diagram of the architecture of an NTN network. The NTN network includes a first network device, a second network device, a ground base station, a ground core network and a terminal. The first network device can be a satellite, such as a HEO satellite, a GEO satellite, a MEO satellite or a LEO satellite, or a HAPS, etc., which is not limited here. The second network device can be a gateway (also called a ground station, an earth station, a gateway station, a gateway station), which can be used to connect the first network device and the base station. One or more first network devices can be connected to one or more ground base stations through one or more second network devices, which is not limited here. In Figure 1 In the example, the communication mode of the first network device is transparent mode, that is, the first network device acts as an analog RF repeater to achieve wireless frequency conversion and amplification, and can transparently transmit or copy the signal between the base station and the terminal. For example, the signal sent by the terminal can be transparently transmitted through the first network device, forwarded by the second network device, and enter the ground base station.

[0075] The present application embodiment does not limit the communication mode of the first network device. For example, the communication mode of the first network device may also be a regenerative mode. Figure 2 , shows another schematic diagram of the NTN network architecture. Figure 2 In the embodiment, the communication mode of the first network device is a regeneration mode, that is, the first network device can be used as a base station for wireless communication to regenerate signals received from the ground, and can understand and process these signals. For example, the first network device can be a base station carried on an artificial earth satellite or a high-altitude aircraft, for example, the base station can be an evolved base station (eNB) or a 5G base station (gNB). The second network device can forward signaling between the first network device (i.e., the base station) and the core network.

[0076] It should be noted that Figure 2Only one first network device and one second network device are shown. In actual use, a plurality of first network devices and / or a plurality of second network devices may be used as required. Each first network device may provide services to one or more terminals, each second network device may correspond to one or more first network devices, and each first network device may correspond to one or more second network devices, which is not specifically limited in the embodiments of the present application.

[0077] As an example, see Figure 3 , showing another architectural schematic diagram of the NTN network. Figure 3 Take two first network devices and two second network devices as an example. The communication mode of the two first network devices is a regeneration mode, that is, the two first network devices can be used as base stations for wireless communication. Figure 2 The difference is that there is an inter-satellite link (ISL) between the two first network devices. Under this network architecture, different first network devices can communicate with each other and can also be connected to the same ground core network.

[0078] As an example, the first network device can also serve as a DU of the base station, separated from the CU of the ground base station, to form a CUDU distributed architecture. Figure 4 , showing another architectural schematic diagram of the NTN network. Figure 4 and Figure 1 The difference is that the first network device, as the DU of the base station, can understand, process and regenerate the signal from the ground, rather than just transparently transmitting or copying it, while the ground base station only acts as a CU. In this network architecture, the service link between the terminal device and the first network device can transmit the NR-Uu wireless interface signal, and the feeder link between the first network device and the second network device can transmit the satellite radio interface (SRI) signal, on top of which the F1 interface signal between the DU and the CU is transmitted.

[0079] Taking the 5G system as an example, the above Figures 1 to 4The core network shown can implement functions such as mobility management, data processing, session management, policy and billing through various functional nodes. For example, the core network may include: access and mobility management function (AMF) node, session management function (SMF) node, policy control function (PCF) node or user plane function (UPF) node and other functions. The device names of the core network that implements the core network functions in systems using different access technologies may be different, and the embodiments of the present application are not limited to this.

[0080] In an embodiment of the present application, a network device is an access device that a terminal device accesses to a mobile communication system by wireless means, for example, including an access network (AN) device, such as a base station. A network device may also refer to a device that communicates with a terminal device at an air interface. The network device may include an evolved Node B (also referred to as eNB or e-NodeB) in an LTE system or an advanced long term evolution (LTE-A); the network device may also include a next generation node B (gNB) in a 5G NR system; or, the network device may also include an access node in a wireless fidelity (Wi-Fi) system, etc.; or the network device may be a relay station, an on-board device, and a future evolved public land mobile network (PLMN) device, a device in a D2D network, a device in a machine to machine (M2M) network, a device in an Internet of Things (IoT) network, or a network device in a PLMN network, etc. The embodiments of the present application do not limit the specific technology and specific device form adopted by the network device.

[0081] In addition, the network device in the embodiment of the present application may include a centralized unit (CU) and a distributed unit (DU), and multiple DUs can be centrally controlled by one CU. CU and DU can be divided according to the protocol layer functions of the wireless network they possess, for example, the functions of the packet data convergence protocol (PDCP) layer and the above protocol layers are set in the CU, and the protocol layers below the PDCP, such as the radio link control (RLC) layer and the medium access control (MAC) layer, are set in the DU. It should be noted that this division of the protocol layer is only an example, and it can also be divided in other protocol layers. The radio frequency device can be pulled away and not placed in the DU, or it can be integrated in the DU, or part of it can be pulled away and part of it can be integrated in the DU. The embodiment of the present application does not impose any restrictions. In addition, in some embodiments, the control plane (CP) and the user plane (UP) of the CU can also be separated and divided into different entities for implementation, namely the control plane CU entity (CU-CP entity) and the user plane CU entity (CU-UP entity). In this network architecture, the signaling generated by the CU can be sent to the terminal device through the DU, or the signaling generated by the UE can be sent to the CU through the DU. The DU can directly encapsulate the signaling through the protocol layer and transparently transmit it to the UE or CU without parsing it. In this network architecture, the CU is divided into a network device on the radio access network (RAN) side. In addition, the CU can also be divided as a network device on the core network (CN) side, and this application does not limit this.

[0082] The network device can communicate with the terminal device directly or through a relay station. The terminal device can communicate with multiple network devices using different access technologies.

[0083] In the embodiment of the present application, the terminal device is a device with wireless transceiver function, which can send signals to the network device or receive signals from the network device. The terminal device may include user equipment (UE), which may also be called terminal, access station, UE station, remote station, wireless communication device, or user device, etc. The terminal device is used to connect people, objects, machines, etc., and can be widely used in various scenarios, such as but not limited to the following scenarios: cellular communication, D2D, V2X, machine-to-machine / machine-type communications (M2M / MTC), Internet of Things (IoT), virtual reality (VR), augmented reality (AR), industrial control, self driving, remote medical, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, drone, robot and other scenarios of terminal devices. For example, the terminal device can be a mobile phone, a tablet computer, a computer with wireless transceiver function, a VR terminal, an AR terminal, a wireless terminal in industrial control, a wireless terminal in unmanned driving, a smart speaker in an IoT network, a wireless terminal device in telemedicine, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, or a wireless terminal device in a smart home, etc. As an example and not a limitation, in the embodiments of the present application, the terminal device can also be a wearable device. Wearable devices can also be called wearable smart devices or smart wearable devices, etc., which are a general term for wearable devices that are intelligently designed and developed using wearable technology for daily wear, such as glasses, gloves, watches, clothing and shoes. The various terminal devices introduced above, if located on a vehicle (for example, placed in a vehicle or installed in a vehicle), can be considered as vehicle-mounted terminal devices, and vehicle-mounted terminal devices are also called on-board units (OBU). The terminal device of the present application may also be a vehicle-mounted module, vehicle-mounted module, vehicle-mounted component, vehicle-mounted chip or vehicle-mounted unit that is built into the vehicle as one or more components or units. The vehicle can implement the method of the present application through the built-in vehicle-mounted module, vehicle-mounted module, vehicle-mounted component, vehicle-mounted chip or vehicle-mounted unit.

[0084] In the embodiment of the present application, the communication device for realizing the function of the network device may be a network device, or may be a device capable of supporting the network device to realize the function, such as a chip system, which may be installed in the network device. In the technical solution provided in the embodiment of the present application, the technical solution provided in the embodiment of the present application is described by taking the device for realizing the function of the network device as an example that the network device is used as the device.

[0085] The following is a detailed description of the information transmission method provided by the embodiment of the present application in conjunction with the accompanying drawings. In the following introduction process, the method can be applied to Figures 1 to 4 Any communication system shown. The network device can be such as Figures 1 to 4 The first network device and / or ground base station shown. It should be noted that the embodiment of the present application is only based on Figures 1 to 4 The communication system shown is taken as an example, and is not limited to this scenario. The following introduces the relevant technologies and terms involved in the embodiments of the present application.

[0086] 1. Quasi co-location (QCL)

[0087] If the channel characteristics of the symbol transmitted by one antenna port can be inferred from the channel characteristic parameters of the symbol transmitted by another antenna port, the two antenna ports can be said to be quasi-co-located, or the two antenna ports are said to have a quasi-co-located relationship. The channel characteristic parameters include delay spread, Doppler spread, Doppler shift, average delay, average delay and spatial Rx parameter.

[0088] The network device can configure the transmission configuration indication (TCI) state (TCI-State) corresponding to the physical downlink shared channel (PDSCH), physical downlink control channel (PDCCH) and channel state information reference signal (CSI-RS) resources for the terminal. Each TCI state indicates a reference signal resource with a QCL relationship with the antenna port of the target resource (the target resource can be a PDSCH, PDCCH or CSI-RS resource). The QCL relationship can be the following QCL types:

[0089] - Type A: {Doppler shift, Doppler spread, average delay, delay spread}

[0090] - Type B: {Doppler shift, Doppler spread}

[0091] - Type C: {Doppler shift, average delay}

[0092] -Type D: {space receiving parameters}

[0093] At present, the network device can configure a TCI state corresponding to a CSI-RS resource through a radio resource control message. The TCI state indicates the reference signal resource and QCL type having a QCL relationship with the CSI-RS resource. The reference signal resource indicated by the TCI state can be a CSI-RS resource or a synchronization signal block (SSB). The terminal can use the corresponding channel characteristic parameters to receive the reference signal on the CSI-RS resource according to the QCL type of the reference signal resource indicated by the TCI state. Compared with the satellite communication scenario, the relative position of the network device and the terminal in the ground communication scenario changes slowly, and the TCI state of the CSI-RS resource is relatively stable, which is valid for a long time after the TCI state is configured. In the satellite communication scenario, as the satellite moves, the relative position of the satellite and the terminal changes rapidly, and the TCI state of the CSI-RS resource will also change rapidly. If the current method of reconfiguring the CSI-RS resource through RRC messages is still used to update the TCI state of the CSI-RS resource, it will be necessary to send RRC messages frequently, and the signaling overhead and delay are large, and the efficiency is low.

[0094] When the network device is a satellite, since the satellite moves according to a fixed orbit, the displacement relative to the ground is predictable. Therefore, the network device can predict the change of the reference signal resource that is quasi-co-located with the first reference signal resource. The present application proposes that when the network device configures the first reference signal resource (such as CSI-RS resource or sounding reference signal (SRS) resource) for the terminal, it can pre-configure the set of quasi-co-located candidate reference signal resources corresponding to the first reference signal resource through the first information, and one of the reference signal resources is the reference signal resource that is currently quasi-co-located with the first reference signal resource. The network device also indicates the update period duration of the quasi-co-located reference signal resource to the terminal, and the terminal can update the reference signal resource that is quasi-co-located with the first reference signal resource according to the period duration. It can avoid reconfiguring the first reference signal resource every time the quasi-co-located relationship changes, can reduce signaling overhead, and improve indication efficiency.

[0095] Figure 54 is another schematic flow chart of the information transmission method provided in the embodiment of the present application. The method includes but is not limited to the following steps S501 and S502.

[0096] S501, a network device sends first information to a terminal, where the first information is used to configure a first reference signal resource, and the first information includes first indication information and second indication information, where the first indication information is used to indicate a set of candidate reference signal resources, where the first reference signal resource is quasi-co-located with a second reference signal resource in the candidate reference signal resources, and where the second indication information is used to indicate a change period duration of a reference signal resource that is quasi-co-located with the first reference signal resource.

[0097] Accordingly, the terminal receives the first information from the network device, and determines, based on the first information, a set of candidate reference signal resources quasi-co-located with the first reference signal resource, wherein the reference signal resource currently quasi-co-located with the first reference signal resource is a second reference signal resource in the set of candidate reference signal resources.

[0098] Exemplarily, the first reference signal may be a periodic reference signal resource or a semi-static reference signal resource. The first reference signal resource may be a downlink reference signal resource, such as a CSI-RS resource. Alternatively, the first reference signal resource may be an uplink reference signal resource, such as an SRS resource. The candidate reference signal resource set may include a CSI-RS resource and / or an SSB resource.

[0099] In one implementation, the second reference signal resource may be a reference signal resource predefined in a candidate reference signal resource set.

[0100] For example, the first reference signal resource in the candidate reference signal resource set may be predefined as a reference signal resource that is currently quasi-co-located with the first reference signal resource. When generating the first information, the network device may arrange the second reference signal resource as the first one in the candidate reference signal resource set, and after the terminal receives the first information, it may determine that the first reference signal resource (i.e., the second reference signal resource) in the candidate reference signal resource set is a reference signal resource that is currently quasi-co-located with the first reference signal resource. Alternatively, the last reference signal resource may be predefined as a reference signal resource that is currently quasi-co-located with the first reference signal resource.

[0101] In another implementation, the first information further includes indication information, the indication information being used to indicate that the second reference signal resource is a reference signal resource quasi-co-located with the first reference signal resource. The terminal determines, based on the indication of the indication information, that the second reference signal resource is a reference signal resource currently quasi-co-located with the first reference signal resource.

[0102] The first information may also be used to indicate a channel characteristic parameter corresponding to each reference signal resource in a set of candidate reference signal resources quasi-co-located with the first reference signal resource.

[0103] Exemplarily, the first information may configure multiple TCI states for the first reference signal resource, and each TCI state indicates at least one reference signal resource. The reference signal resources indicated by the multiple TCI states constitute a set of quasi-co-located candidate reference signal resources corresponding to the first reference signal resource. Each TCI state may also indicate the QCL type corresponding to the reference signal resource indicated by it, and the channel characteristic parameters corresponding to the reference signal resource may be determined by the QCL type. For example, the QCL type may be one of the QCL types A to D introduced above.

[0104] It should be understood that the channel characteristic parameters corresponding to the reference signal resources in the candidate reference signal resource set may be predefined or indicated by other information, and this application does not limit this.

[0105] After the terminal determines, based on the first information, that the reference signal resource currently quasi-co-located with the first reference signal resource is the second reference signal resource, the terminal may receive or send a reference signal on the first reference signal resource based on the channel characteristic parameter corresponding to the second reference signal resource. If the first reference signal resource is a downlink reference signal resource, the terminal receives the reference signal on the first reference signal resource. If the first reference signal resource is an uplink reference signal resource, the terminal sends a reference signal on the first reference signal resource.

[0106] The terminal may also perform data transmission with the network device according to the channel characteristic parameter corresponding to the second reference signal resource, such as transmitting uplink data or downlink data.

[0107] The terminal may also determine the change period duration of the reference signal resource quasi-co-located with the first reference signal resource according to the second indication information in the first information. The terminal may determine that after each period duration after the first information takes effect, the reference signal resource quasi-co-located with the first reference signal resource is updated to the next reference signal resource in the candidate reference signal resource set.

[0108] Exemplarily, the first information may be an RRC message, or the first information may also be other information / message sent by the network device to the terminal.

[0109] Optionally, the first reference signal resource is an uplink reference signal resource, the first information further includes third indication information, the third indication information is used to indicate a candidate power control parameter set, and the power control parameter corresponding to the first reference signal resource is a first power control parameter in the candidate power control parameter set. After receiving the first information, the terminal can send a reference signal on the first reference signal resource according to the first power control parameter.

[0110] The first power control parameter may be a predefined power control parameter in the candidate power control parameter set, such as the first power control parameter or the last power control parameter in the candidate power control parameter set. Alternatively, the first information also includes indication information for indicating that the current power control parameter of the first reference signal resource is the first power control parameter.

[0111] S502: After a period of time, the terminal determines that a reference signal resource that is quasi-co-located with the first reference signal resource is updated as a third reference signal resource in the candidate reference signal resources.

[0112] After the terminal determines that the reference signal resource that is quasi-co-located with the first reference signal resource is updated to the third reference signal resource among the candidate reference signal resources, the terminal can communicate and transmit with the network device based on the channel characteristic parameters corresponding to the third reference signal resource, wherein the communication and transmission between the terminal and the network device may include transmitting a reference signal to the network device on the first reference signal resource, and / or the communication and transmission between the terminal and the network device includes transmitting data with the network device.

[0113] The order of changing the reference signal resources quasi-co-located with the first reference signal resource in the candidate reference signal resource set may be predefined or indicated by the first information.

[0114] For example, the reference signal resource quasi-co-located with the first reference signal resource is changed in sequence according to the arrangement order of the reference signal resource in the candidate reference signal resource set. After receiving the first information, the terminal can determine that the reference signal resource currently quasi-co-located with the first reference signal resource is the first reference signal resource in the candidate reference signal resource set, that is, the second reference signal resource. After the first information takes effect, after a period of time, the terminal determines that the reference signal resource quasi-co-located with the first reference signal resource is updated to the second reference signal resource in the candidate reference signal resource set (that is, an example of the third reference signal resource). Within a period of time after the reference signal resource quasi-co-located with the first reference signal resource is updated to the third reference signal resource, the terminal receives or sends a reference signal on the third reference signal resource according to the channel characteristic parameters corresponding to the third reference signal resource. After a period of time after the reference signal resource quasi-co-located with the first reference signal resource is updated to the third reference signal resource, the terminal determines that the reference signal resource quasi-co-located with the first reference signal resource is updated to the next reference signal resource in the candidate reference signal resource set, and so on. However, the present application is not limited thereto, and the order of changing the reference signal resources quasi-co-located with the first reference signal resource may also be changed in sequence according to the size of the identifiers of the reference signal resources in the candidate reference signal resource set.

[0115] Exemplarily, the first information may indicate a set of candidate reference signal resources corresponding to the first reference signal resource by configuring multiple TCI states for the first reference signal resource. The terminal determines that the reference signal resource quasi-co-located with the first reference signal resource is changed to the reference signal resource indicated by the next TCI state in the multiple TCI states after each cycle duration according to the change order of the TCI state predefined or indicated by the first information. In other words, the TCI state of the first reference signal resource is changed to the next TCI state in the multiple TCI states every cycle duration.

[0116] In an optional implementation, the first information includes the third indication information mentioned above, which is used to indicate a candidate power control parameter set, and the power control parameter corresponding to the first reference signal resource is the first power control parameter in the candidate power control parameter set. After one cycle length after the first information takes effect, the terminal can determine that the power control parameter corresponding to the first reference signal resource is the second power control parameter in the candidate power control parameter set. By analogy, the terminal can determine that after each cycle length after the first information takes effect, the power control parameter corresponding to the first reference signal resource is updated to the next power control parameter in the candidate power control parameter set. The terminal uses the power control parameter to send a reference signal on the first reference signal resource within one cycle length after the power control parameter takes effect.

[0117] Optionally, the order of changing the power control parameters corresponding to the first reference signal resource in the candidate power control parameter set may be predefined or indicated by the first information. Specific implementation may refer to the example of changing the order of the reference signal resource quasi-co-located with the first reference signal resource in the foregoing text, which will not be repeated here.

[0118] Exemplarily, the first information can configure multiple TCI states for the first reference signal resource, and each TCI state indicates a power control parameter. The reference signal resources indicated by the multiple TCI states constitute a candidate power control parameter set corresponding to the first reference signal resource. The terminal determines that the power control parameter of the first reference signal resource is changed to the power control parameter indicated by the next TCI state in the multiple TCI states after each cycle duration in accordance with the order of change of the TCI state. In other words, at intervals of one cycle duration, the TCI state of the first reference signal resource is changed to the next TCI state in the multiple TCI states, wherein the reference signal resource quasi-co-located with the first reference signal resource is updated to the reference signal resource indicated by the changed TCI state, and the power control parameter of the first reference signal resource is updated to the power control parameter indicated by the changed TCI state.

[0119] According to the above scheme, the network device can determine the change of the reference signal resource quasi-co-located with the first reference signal resource according to the relative position change rule with the terminal, and determine the candidate reference signal resource set quasi-co-located corresponding to the first reference signal resource and the change cycle duration. The network device notifies the terminal through the first information, and the terminal can determine the reference signal resource currently quasi-co-located with the first reference signal resource and the change cycle duration of the reference signal resource quasi-co-located with the first reference signal resource according to the configuration of the first information, so as to update the reference signal resource quasi-co-located with the first reference signal resource in a timely manner in the future, and there is no need for the network device to notify the terminal through signaling every time when the reference signal resource quasi-co-located with the first reference signal resource is updated, which can reduce signaling overhead and improve resource utilization.

[0120] In view of the aforementioned method of updating the TCI status of CSI-RS resources through RRC message reconfiguration in the satellite communication scenario, there are problems of large signaling overhead and delay and low efficiency. The present application proposes that when a network device configures a first reference signal resource (such as a CSI-RS resource or a sounding reference signal (SRS) resource) for a terminal, it can pre-configure a set of candidate reference signal resources that are quasi-co-located with the first reference signal resource, one of which is a reference signal resource that is currently quasi-co-located with the first reference signal resource. The network device can indicate a reference signal resource in the configured candidate reference signal resource set through signaling, and notify the terminal of the updated reference signal resource that is quasi-co-located with the first reference signal resource. This can avoid reconfiguring the first reference signal resource every time the quasi-co-location relationship changes, can reduce signaling overhead, and improve indication efficiency.

[0121] Figure 6 is a schematic flow chart of the information transmission method provided in the embodiment of the present application. The method includes but is not limited to the following steps S601 and S602. It should be understood that Figure 6 In the embodiment shown Figure 5 The same parts in the illustrated embodiment can be referred to in the previous description, and for the sake of brevity, they will not be repeated here.

[0122] S601, a network device sends first information to a terminal, where the first information is used to configure a first reference signal resource. The first information includes first indication information, where the first indication information is used to indicate a set of candidate reference signal resources, where the first reference signal resource is quasi-co-located with a second reference signal resource in the set of candidate reference signal resources.

[0123] Accordingly, the terminal receives the first information from the network device, and determines, based on the first information, a set of candidate reference signal resources quasi-co-located with the first reference signal resource, wherein the reference signal resource currently quasi-co-located with the first reference signal resource is a second reference signal resource in the set of candidate reference signal resources.

[0124] The network device can pre-configure the reference signal resource that is currently quasi-co-located with the first reference signal and the reference signal resource that may be quasi-co-located with the first reference signal resource due to a change in position for the terminal through the first information, so that when the reference signal resource that is quasi-co-located with the first reference signal resource changes, the network device can indicate a reference signal resource in the candidate reference signal resource set through the second information described below, and notify the terminal that the resource is an updated reference signal resource that is quasi-co-located with the first reference signal resource, without reconfiguring the first reference signal resource. It can reduce signaling overhead and improve indication efficiency.

[0125] The first information may also be used to indicate a channel characteristic parameter corresponding to each reference signal resource in a set of candidate reference signal resources quasi-co-located with the first reference signal resource.

[0126] Exemplarily, the first information may configure multiple TCI states for the first reference signal resource, and each TCI state indicates at least one reference signal resource. The reference signal resources indicated by the multiple TCI states constitute a set of quasi-co-located candidate reference signal resources corresponding to the first reference signal resource. Each TCI state may also indicate the QCL type corresponding to the reference signal resource indicated by it, and the channel characteristic parameters corresponding to the reference signal resource may be determined by the QCL type. For example, the QCL type may be one of the QCL types A to D introduced above.

[0127] It should be understood that the channel characteristic parameters corresponding to the reference signal resources in the candidate reference signal resource set may be predefined or indicated by other information, and this application does not limit this.

[0128] After the terminal determines that the reference signal currently quasi-co-located with the first reference signal resource is the second reference signal resource according to the first information, the terminal can receive or send a reference signal on the first reference signal resource using the channel characteristic parameters corresponding to the second reference signal resource. If the first reference signal resource is a downlink reference signal resource, the terminal receives the reference signal on the first reference signal resource. If the first reference signal resource is an uplink reference signal resource, the terminal sends the reference signal on the first reference signal resource.

[0129] The terminal may also perform data transmission with the network device according to the channel characteristic parameter corresponding to the second reference signal resource, such as transmitting uplink data or downlink data.

[0130] Optionally, the first reference signal resource is an uplink reference signal resource, the first information further includes third indication information, the third indication information is used to indicate a candidate power control parameter set, and the power control parameter corresponding to the first reference signal resource is a first power control parameter in the candidate power control parameter set. After receiving the first information, the terminal can send a reference signal on the first reference signal resource according to the first power control parameter.

[0131] The first power control parameter may be a predefined power control parameter in the candidate power control parameter set, such as the first power control parameter or the last power control parameter in the candidate power control parameter set. Alternatively, the first information also includes indication information for indicating that the current power control parameter of the first reference signal resource is the first power control parameter.

[0132] S602: The network device sends second information to the terminal, where the second information is used to indicate a third reference signal resource in a candidate reference signal resource set, and the reference signal resource quasi-co-located with the first reference signal resource is updated to the third reference signal resource.

[0133] When the relative position of the network device and the terminal changes, the reference signal resource quasi-co-located with the first reference signal resource may change accordingly. When the reference signal resource quasi-co-located with the first reference signal resource changes, the network device may indicate a reference signal resource (i.e., a third reference signal resource) in the preconfigured candidate resource set through the second information to notify the terminal that the reference signal resource quasi-co-located with the first reference signal resource is updated to the third reference signal resource.

[0134] Correspondingly, the terminal receives the second information from the network device, and determines that the reference signal resource quasi-co-located with the first reference signal resource is updated to the third reference signal resource.

[0135] After the terminal determines that the reference signal resource that is quasi-co-located with the first reference signal resource is updated to the third reference signal resource among the candidate reference signal resources, the terminal can communicate and transmit with the network device based on the channel characteristic parameters corresponding to the third reference signal resource, wherein the communication and transmission between the terminal and the network device may include transmitting a reference signal to the network device on the first reference signal resource, and / or the communication and transmission between the terminal and the network device includes transmitting data with the network device.

[0136] Exemplarily, the second information may include an identifier of a third reference signal resource, and the terminal may determine, based on the identifier in the second information, that the reference signal resource quasi-co-located with the first reference signal resource is updated to the third reference signal resource corresponding to the identifier in the candidate reference signal set.

[0137] After receiving the second information, the terminal receives or sends a reference signal on the first reference signal resource according to the channel characteristic parameter corresponding to the third reference signal resource.

[0138] Specifically, the first information can configure multiple TCI states for the first reference signal resource, and each TCI state indication can indicate at least one reference signal resource. The reference signal resources indicated by the multiple TCI states constitute a candidate reference signal resource set corresponding to the first reference signal resource. The second information can specifically indicate an identifier of a TCI state. According to the second information, the terminal can determine that the TCI state of the first reference signal resource is updated to the TCI state corresponding to the identifier indicated by the second information, and the terminal can determine that the reference signal resource quasi-co-located with the first reference signal resource is updated to the reference signal resource indicated by the TCI state.

[0139] Optionally, the first reference signal resource is an uplink reference signal resource, and the first information includes the third indication information. The second information can also be used to indicate a second power control parameter in the candidate power control parameter set, where the second power control parameter is a power control parameter corresponding to the updated first reference signal resource. After receiving the second information, the terminal sends a reference signal on the first reference signal resource according to the second power control parameter.

[0140] Exemplarily, the first information can configure multiple TCI states for the first reference signal resource, and each TCI state indication can indicate at least one reference signal resource and a power control parameter. The reference signal resources indicated by the multiple TCI states constitute a set of candidate reference signal resources corresponding to the first reference signal resource, and the power control parameters indicated by the multiple TCI states constitute a set of candidate power control parameters for the first reference signal resource. The second information can specifically indicate an identifier of a TCI state, and the terminal can determine, based on the second information, that the TCI state of the first reference signal resource is updated to the TCI state corresponding to the identifier indicated by the second information. Then the terminal can determine that the reference signal resource quasi-co-located with the first reference signal resource is updated to the reference signal resource indicated by the TCI state, and the power control parameter of the first reference signal resource is updated to the power control parameter indicated by the TCI state.

[0141] Exemplarily, the first information is an RRC message, and the second information is downlink control information (DCI) or a medium access control (MAC) control element (CE).

[0142] Since the amount of information carried by the RRC message is large, the RRC message is carried as data on the PDSCH scheduled by the DCI. After receiving the DCI, the terminal needs to receive the RRC message on the PDSCH according to the DCI, and the RRC message may be retransmitted due to transmission errors, so the timeliness and reliability of the RRC message are low. When the relative position of the network device and the terminal changes rapidly, such as when the network device is a satellite, the frequency of change of the reference signal resource quasi-co-located with the first reference signal resource is high. If the RRC message is used to reconfigure the updated reference signal resource quasi-co-located with the first reference signal resource, the signaling overhead is large and the efficiency is low. Therefore, through the scheme of the present application, the candidate reference signal resource set corresponding to the first reference signal resource is pre-configured by the first information (such as the first information can be an RRC message). The terminal can be notified of the changed reference signal resource quasi-co-located with the first reference signal resource by indicating a reference signal resource in the configured candidate reference signal resource set through the second information, which can reduce the signaling overhead and improve the indication efficiency. For example, the second information may be DCI or MAC CE. Since the timeliness and reliability of DCI and MAC CE are higher than those of RRC messages, the indication efficiency may be further improved.

[0143] It is understandable that in order to implement the functions in the above embodiments, the network device and the terminal include hardware structures and / or software modules corresponding to the execution of each function. It should be easily appreciated by those skilled in the art that, in combination with the units and method steps of each example described in the embodiments disclosed in this application, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application scenario and design constraints of the technical solution.

[0144] Figure 7 and Figure 8 The following is a schematic diagram of the structure of possible communication devices provided in the embodiments of the present application. These communication devices can be used to implement the functions of the terminal or network device in the above method embodiments, and thus can also achieve the beneficial effects of the above method embodiments. In the embodiments of the present application, the communication device can be as follows: Figures 1 to 4 One of the terminals shown, or Figures 1 to 4 The network device shown (first network device, second network device or base station) may also be a module (such as a chip or a chip system) applied to a terminal device or a network device.

[0145] The communication device 700 includes a transceiver unit 720, which can be used to receive or send information. The communication device 700 may also include a processing unit 710, which can be used to process instructions or data to implement corresponding operations.

[0146] It should be understood that when the communication device 700 is a chip configured in (or used in) a communication device, the transceiver unit 720 in the communication device 700 can be the input / output interface or circuit of the chip, and the processing unit 710 in the communication device 700 can be the processor in the chip.

[0147] Optionally, the communication device 700 may further include a storage unit 730, which may be used to store instructions or data, and the processing unit 710 may execute the instructions or data stored in the storage unit to enable the communication device to implement corresponding operations.

[0148] The communication device 700 can be used to implement the above Figure 5 The functions of the terminal or network device in the method embodiment shown in FIG.

[0149] When the communication device 700 is used to implement Figure 5 The functions of the terminal in the method embodiment shown are: the transceiver unit 720 is used to receive the first information from the network device, the first information is used to configure the first reference signal resource, the first information includes the first indication information and the second indication information, the first indication information is used to indicate the candidate reference signal resource set, the first reference signal resource is quasi-co-located with the second reference signal resource in the candidate reference signal resource set, and the second indication information is used to indicate the change period duration of the reference signal resource quasi-co-located with the first reference signal resource. The processing unit 710 is used to determine that the reference signal resource quasi-co-located with the first reference signal resource is updated to the third reference signal resource in the candidate reference signal resource set after the period duration.

[0150] When the communication device 700 is used to implement Figure 5 In the method embodiment shown, the function of the network device is: the processing unit 710 is used to determine the first information, the first information is used to configure the first reference signal resource, the first information includes the first indication information and the second indication information, the first indication information is used to indicate the candidate reference signal resource set, the first reference signal resource is quasi-co-located with the second reference signal resource in the candidate reference signal resource set, and the second indication information is used to indicate the change period duration of the reference signal resource quasi-co-located with the first reference signal resource. The transceiver unit 720 is used to send the first information to the terminal.

[0151] For more detailed description of the processing unit 710 and the transceiver unit 720, please refer to Figure 5 The method embodiment shown is described in detail.

[0152] The communication device 700 can be used to implement the above Figure 6 The functions of the terminal or network device in the method embodiment shown in FIG.

[0153] When the communication device 700 is used to implement Figure 6 The functions of the terminal in the method embodiment shown are: the transceiver unit 720 is used to receive first information from a network device, the first information is used to configure a first reference signal resource, the first information includes first indication information, the first indication information is used to indicate a candidate reference signal resource set, the first reference signal resource is quasi-co-located with a second reference signal resource in the candidate reference signal resource set. The processing unit 710 is used to determine the candidate reference signal resource set and the quasi-co-location of the first reference signal resource with the second reference signal resource in the candidate reference signal resource set based on the first information. The transceiver unit 720 is also used to receive second information from the network device, the second information is used to indicate a third reference signal resource in the candidate reference signal resource set, and the reference signal resource quasi-co-located with the first reference signal resource is changed to the third reference signal resource.

[0154] When the communication device 700 is used to implement Figure 6 In the method embodiment shown, the function of the network device is as follows: the processing unit 710 is used to determine first information, the first information is used to configure a first reference signal resource, the first information includes first indication information, the first indication information is used to indicate a candidate reference signal resource set, the first reference signal resource is quasi-co-located with a second reference signal resource in the candidate reference signal resource set. The transceiver unit 720 is used to send the first information to the terminal. The transceiver unit 720 is also used to send second information to the terminal, the second information is used to indicate a third reference signal resource in the candidate reference signal resource set, and the reference signal resource quasi-co-located with the first reference signal resource is changed to the third reference signal resource.

[0155] For more detailed description of the processing unit 710 and the transceiver unit 720, please refer to Figure 6 The method embodiment shown is described in detail.

[0156] It should be understood that the transceiver unit 720 in the communication device 700 can be implemented through a communication interface (such as a transceiver, a transceiver circuit, an input / output interface, or a pin, etc.). When the communication interface is a transceiver, the transceiver can be composed of a receiver and / or a transmitter. The processing unit 710 in the communication device 700 can be implemented by at least one processor, and the processing unit 710 in the communication device 700 can also be implemented by at least one logic circuit. Optionally, the communication device 700 also includes a storage unit, which can be implemented by a memory.

[0157] like Figure 8As shown, the communication device 800 includes a processor 810 and an interface circuit 820. The processor 810 and the interface circuit 820 are coupled to each other. It is understood that the interface circuit 820 can be a transceiver or an input-output interface. Optionally, the communication device 800 may also include a memory 830 for storing instructions executed by the processor 810 or storing input data required by the processor 810 to execute instructions or storing data generated after the processor 810 executes instructions.

[0158] In one implementation, the memory 830 may also be integrated into the processor 810 or independent of the processor 810 .

[0159] When the communication device 800 is used to implement Figure 5 , Figure 6 When the method is shown, the processor 810 is used to implement the function of the above-mentioned processing unit 710, and the interface circuit 820 is used to implement the function of the above-mentioned transceiver unit 720.

[0160] When the above communication device is a chip applied to a terminal device, the terminal device chip can implement the function of the second communication device in the above method embodiment. The terminal device chip receives information from other modules (such as a radio frequency module or an antenna) in the terminal device, and the information is sent by the network device to the terminal device; or the terminal device chip sends information to other modules (such as a radio frequency module or an antenna) in the terminal device, and the information is sent by the terminal device to the network device.

[0161] When the above-mentioned communication device is a module applied to a network device, the network device module can implement the function of the first communication device in the above-mentioned method embodiment. The network device module receives information from other modules in the network device (such as a radio frequency module or an antenna), and the information is sent by the terminal device to the network device; or, the network device module sends information to other modules in the network device (such as a radio frequency module or an antenna), and the information is sent by the network device to the terminal device. The network device module here can be a baseband chip of the network device, or it can be a DU or other module. The DU here can be a DU under the open radio access network (O-RAN) architecture.

[0162] It is understandable that the processor in the embodiments of the present application may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. The general-purpose processor may be a microprocessor or any conventional processor.

[0163] The method steps in the embodiments of the present application can be implemented in hardware or in software instructions that can be executed by a processor. The software instructions can be composed of corresponding software modules, and the software modules can be stored in random access memory, flash memory, read-only memory, programmable read-only memory, erasable programmable read-only memory, electrically erasable programmable read-only memory, register, hard disk, mobile hard disk, CD-ROM or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor so that the processor can read information from the storage medium and write information to the storage medium. The storage medium can also be a component of the processor. The processor and the storage medium can be located in an ASIC. In addition, the ASIC can be located in an access network device or a terminal device. The processor and the storage medium can also be present in an access network device or a terminal device as discrete components.

[0164] According to the method provided in the embodiment of the application, the embodiment of the application also provides a computer program product, which includes: computer program code, when the computer program code is executed by one or more processors, the device including the processor executes Figure 5 , Figure 6 The method shown.

[0165] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instruction is loaded and executed on a computer, the process or function described in the embodiment of the present application is executed in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user device or other programmable device.

[0166] According to the method provided in the embodiment of the present application, the embodiment of the present application also provides a computer-readable storage medium, which stores the above-mentioned computer program or instruction, and when the computer program or instruction is executed by one or more processors, the device including the processor executes Figure 5 , Figure 6 The method shown in .

[0167] As described above, the computer program or instruction may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer program or instruction may be transmitted from one website, computer, server or data center to another website, computer, server or data center by wired or wireless means. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center that integrates one or more available media. The available medium may be a magnetic medium, such as a floppy disk, a hard disk, or a magnetic tape; it may also be an optical medium, such as a digital video disc; it may also be a semiconductor medium, such as a solid-state drive. The computer-readable storage medium may be a volatile or non-volatile storage medium, or may include both volatile and non-volatile types of storage media.

[0168] According to the method provided in the embodiment of the present application, the embodiment of the present application also provides a communication system, including one or more terminals as mentioned above. The system may further include one or more network devices as mentioned above.

[0169] In the several provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the devices described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0170] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of this solution.

[0171] In the various embodiments of the present application, unless otherwise specified or provided for in any logical conflict, the terms and / or descriptions between the different embodiments are consistent and may be referenced to each other, and the technical features in the different embodiments may be combined to form new embodiments according to their inherent logical relationships.

[0172] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An information transmission method, characterized in that: include: receiving first information from a network device, where the first information is used to configure a first reference signal resource, the first information includes first indication information and second indication information, the first indication information is used to indicate a candidate reference signal resource set, the first reference signal resource is quasi-co-located with a second reference signal resource in the candidate reference signal resource set, and the second indication information is used to indicate a change period duration of a reference signal resource quasi-co-located with the first reference signal resource; It is determined that a reference signal resource that is quasi-co-located with the first reference signal resource after the period duration is updated as a third reference signal resource in the candidate reference signal resource set.

2. The method according to claim 1, characterized in that The second reference signal resource is the first reference signal resource, the last reference signal resource in the candidate reference signal resource set, or a reference signal resource corresponding to an identifier indicated by the first indication information.

3. The method according to claim 1 or 2, characterized in that: The order of changing the reference signal resources in the candidate reference signal resource set that are quasi-co-located with the first reference signal resource is predefined or indicated by first information.

4. The method according to any one of claims 1 to 3, characterized in that The first indication information is further used to indicate a channel characteristic parameter corresponding to each reference signal resource in the candidate reference signal resource set that is quasi-co-located with the first reference signal resource.

5. The method according to claim 4, characterized in that The method further comprises: Before the period duration, communicating and transmitting with the network device according to the channel characteristic parameter of the second reference signal resource; After the period, communicating and transmitting with the network device according to the channel characteristic parameter corresponding to the third reference signal resource, The communicating and transmitting with the network device includes transmitting a reference signal with the network device on the first reference signal resource, and / or includes transmitting data with the network device.

6. The method according to any one of claims 1 to 5, characterized in that The first reference signal resource is an uplink reference signal resource, the first information further includes third indication information, the third indication information is used to indicate a candidate power control parameter set, and the power control parameter corresponding to the first reference signal resource is a first power control parameter in the candidate power control parameter set; And, the method further comprises: After determining the cycle duration, the power control parameter corresponding to the first reference signal resource is changed to a second power control parameter in the candidate power control parameter set.

7. The method according to claim 6, characterized in that The first power control parameter is the first power control parameter, the last power control parameter in the candidate reference signal resource set, or the power control parameter indicated by the first information.

8. The method according to claim 6 or 7, characterized in that: The method further comprises: Before the cycle duration, sending a reference signal on the first reference signal resource according to the first power control parameter; After the cycle time, a reference signal is sent on the first reference signal resource according to the second power control parameter.

9. An information transmission method, characterized in that: include: determining first information, where the first information is used to configure a first reference signal resource, the first information including first indication information and second indication information, the first indication information being used to indicate a set of candidate reference signal resources, the first reference signal resource being quasi-co-located with a second reference signal resource in the set of candidate reference signal resources, and the second indication information being used to indicate a change period duration of a reference signal resource quasi-co-located with the first reference signal resource; The first information is sent to the terminal.

10. The method according to claim 9, characterized in that The second reference signal resource is the first reference signal resource, the last reference signal resource in the candidate reference signal resource set, or a reference signal resource corresponding to an identifier indicated by the first indication information.

11. The method according to claim 9 or 10, characterized in that: The order of changing the reference signal resources in the candidate reference signal resource set that are quasi-co-located with the first reference signal resource is predefined or indicated by first information.

12. The method according to any one of claims 9 to 11, characterized in that The first indication information is further used to indicate a channel characteristic parameter corresponding to each reference signal resource in the candidate reference signal resource set that is quasi-co-located with the first reference signal resource.

13. The method according to any one of claims 9 to 12, characterized in that The first reference signal resource is an uplink reference signal resource, and the first information also includes third indication information, where the third indication information is used to indicate a candidate power control parameter set, the power control parameter corresponding to the first reference signal resource is a first power control parameter in the candidate power control parameter set, and the power control parameter corresponding to the first reference signal resource is changed to a second power control parameter in the candidate power control parameter set after the period duration.

14. The method according to claim 13, characterized in that The first power control parameter is the first power control parameter, the last power control parameter in the candidate reference signal resource set, or the power control parameter indicated by the first information.

15. An information transmission method, characterized in that: include: receiving first information from a network device, where the first information is used to configure a first reference signal resource, where the first information includes first indication information, where the first indication information is used to indicate a candidate reference signal resource set, where the first reference signal resource is quasi-co-located with a second reference signal resource in the candidate reference signal resource set; Second information is received from the network device, where the second information is used to indicate a third reference signal resource in the candidate reference signal resource set, and a reference signal resource quasi-co-located with the first reference signal resource is changed to the third reference signal resource.

16. An information transmission method, characterized in that: include: Sending first information to a terminal, where the first information is used to configure a first reference signal resource, the first information includes first indication information, the first indication information is used to indicate a candidate reference signal resource set, and the first reference signal resource is quasi-co-located with a second reference signal resource in the candidate reference signal resource set; Second information is sent to the terminal, where the second information is used to indicate a third reference signal resource in the candidate reference signal resource set, and the reference signal resource quasi-co-located with the first reference signal resource is changed to the third reference signal resource.

17. A communication device, characterized in that: include: A unit or module for executing the method according to any one of claims 1 to 8 and 15; or A unit or module for executing the method according to any one of claims 9 to 14 and 16.

18. A communication device, characterized in that: The invention comprises a processor, a memory coupled to the processor, the processor being used to execute the method as claimed in any one of claims 1 to 8 and 15; or the processor being used to execute the method as claimed in any one of claims 9 to 14 and 16.

19. A communication device, characterized in that: The method comprises a processor and a communication interface, wherein the processor is used to control the communication interface to implement the method according to any one of claims 1 to 8 and 15, or to implement the method according to any one of claims 9 to 14 and 16.

20. A computer-readable storage medium, characterized in that: Instructions are stored, and when the instructions are executed on a computer, the computer is caused to perform the method according to any one of claims 1 to 16.

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