Communication method and related device

Abstract

The invention discloses a communication method and a related device, and the method comprises the steps: designing an uplink reference signal (namely a first reference signal), enabling a terminal to transmit the first reference signal for rapid synchronization and / or channel measurement and also for triggering data transmission scheduling when there is a data transmission demand in an energy-saving mode, in this way, rapid data transmission in the energy-saving mode can be achieved through few transmission steps, and the communication performance can be improved.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a communication method and related devices. Background Art

[0002] Currently, global energy and environmental issues are serious. Increased energy consumption and rising energy prices have led to high operating costs for telecommunications networks. In telecommunications networks, the proportion of base station energy consumption in the overall energy consumption of the telecommunications network continues to increase. Base station energy consumption includes many components, such as a dynamic component related to load and a static component unrelated to load. Taking no-load or low-load scenarios as an example, the base station needs to frequently send common signals, such as the synchronization signal block (SSB), system information block 1 (SIB1), channel state information-reference signal (CSI-RS), and tracking reference signal (TRS), for network discovery and precise synchronization. Taking SSB as an example, before a terminal establishes a connection with the base station, the base station does not know the terminal's location in the cell. Therefore, the base station needs to periodically send SSBs to facilitate terminal detection and preliminary synchronization. In addition to SSBs, the base station can also send TRSs for terminal detection and fine synchronization. In other words, TRS has better synchronization accuracy than SSBs. TRS supports periodic, semi-static, or aperiodic transmission configurations. However, to ensure terminal synchronization, base stations typically configure periodic TRS transmission for terminals. From the base station's perspective, frequent transmissions prevent the base station from entering deep sleep or achieving long-term sleep, significantly impacting energy conservation. Summary of the Invention

[0003] To achieve energy conservation in base stations, researchers have proposed a base station energy-saving mode. In this energy-saving mode, the base station maintains a longer period of public signal transmission to enable terminals to discover the network and complete basic synchronization. This results in a higher idle ratio of the base station in the time domain, thus helping to save power. However, in this energy-saving mode, when a terminal needs to transmit data, the base station cannot obtain accurate channel information, and the terminal only maintains basic synchronization with the base station, resulting in poor communication performance.

[0004] The present application provides a communication method and related devices, which are beneficial to saving network energy consumption. The present application is introduced from different aspects below. It should be understood that the implementation methods and beneficial effects of the following different aspects can be referenced to each other.

[0005] In a first aspect, the present application provides a communication method, which is executed by a communication device. The communication device can be a terminal or a module in the terminal. In this method, the terminal can send a first reference signal, which is used to trigger scheduling information for data transmission, and the first reference signal is used for channel measurement and / or synchronization. Then, the terminal can receive the scheduling information.

[0006] In this embodiment, the first reference signal is used for fast synchronization and / or channel measurement, and at the same time is also used to trigger data transmission scheduling, enabling the terminal to quickly synchronize and / or perform channel measurement through the first reference signal when there is a data transmission requirement, and then obtain the scheduling information for data transmission. Compared with the terminal receiving the synchronization signal through blind detection and the base station periodically sending information for synchronization and / or channel measurement at a low frequency, the embodiment of the present application can achieve fast data transmission in the energy-saving mode through fewer transmission steps, which is beneficial to improving communication performance.

[0007] In a possible implementation, the receiving the scheduling information includes:

[0008] Receiving the scheduling information within a first time period after sending the first reference signal; or,

[0009] Receiving the scheduling information at the A-th time unit after sending the first reference signal, where A is an integer greater than 0.

[0010] In this implementation manner, the timing relationship between the first reference signal and the scheduling information is specified, so that the terminal only needs to detect the scheduling information within the first time period / at the A-th time unit after sending the first reference signal, instead of blindly detecting the scheduling information at each time unit or multiple time units after sending the first reference signal, thus reducing the detection overhead and power consumption of the terminal.

[0011] In a possible implementation, the data transmission is downlink data transmission;

[0012] Before sending the first reference signal, the method further includes:

[0013] Receiving a first trigger signal, which is used to trigger the first reference signal.

[0014] In this implementation manner, a trigger process for downlink data transmission is designed, which can enable the base station to trigger the terminal to quickly complete steps such as synchronization and channel measurement before downlink data transmission, which is beneficial to improving communication efficiency and reducing transmission overhead.

[0015] In a possible implementation, the sending the first reference signal includes:

[0016] Transmit the first reference signal within a second time period after receiving the first trigger signal; or,

[0017] Transmit the first reference signal at the B-th time unit after receiving the first trigger signal, where B is an integer greater than 0.

[0018] In a possible implementation, the first trigger signal is used for synchronization, and the first reference signal is used for channel measurement.

[0019] In this implementation manner, by designing the first trigger signal for synchronization and the first reference signal for channel measurement, the diversity of the scheme implementation is improved.

[0020] In a possible implementation, after transmitting the first reference signal, the method further includes:

[0021] Receive a second reference signal, where the second reference signal is used for interference measurement;

[0022] Transmit interference measurement information according to the second reference signal.

[0023] In this implementation manner, on the basis that the base station completes channel measurement, the terminal further measures downlink interference, making the scheduling more accurate and beneficial to improving the downlink transmission performance.

[0024] In a possible implementation, the receiving of the second reference signal includes:

[0025] Receive the second reference signal within a third time period after transmitting the first reference signal; or,

[0026] Receive the second reference signal at the C-th time unit after transmitting the first reference signal, where C is an integer greater than 0.

[0027] In a possible implementation, the receiving of the scheduling information includes:

[0028] Receive the scheduling information within a fourth time period after transmitting the interference measurement information; or,

[0029] The starting time unit of the scheduling information is the D-th time unit after the ending time unit of the interference measurement information, where D is an integer greater than 0.

[0030] In a possible implementation, the scheduling information further includes the synchronization information corresponding to the first reference signal.

[0031] In this implementation, when the first reference signal is used for synchronization, the peer end (i.e., the base station) can determine synchronization information (such as timing offset and / or frequency offset) through the first reference signal, and carry the determined synchronization information in the scheduling information and send it to the terminal. In this way, it is equivalent that the scheduling information carries both the synchronization information and the scheduling information for data transmission. Therefore, it can save signaling overhead and the power consumption of the terminal and the base station.

[0032] In a possible implementation, the first reference signal is used for synchronization, and the first reference signal includes multiple reference signals; the frequency-domain positions of the transmission resources of the multiple reference signals are the same, and there is an interval in the time-domain positions of the transmission resources of the multiple reference signals.

[0033] In this implementation, the first reference signal can have the synchronization function. That is, calculating the timing offset and frequency offset needs to be implemented based on multiple reference signals with the same frequency-domain position and different time-domain positions.

[0034] In a possible implementation, each of the multiple reference signals included in the first reference signal corresponds to multiple antenna ports.

[0035] In this implementation, the first reference signal can have the function of channel measurement.

[0036] In a second aspect, the present application provides a communication method, which is executed by a communication device. The communication device can be a radio access network device or a module in the radio access network device. In this method, the radio access network device receives a first reference signal, where the first reference signal is used to trigger scheduling information for data transmission, and the first reference signal is used for channel measurement and / or synchronization; then, the radio access network device sends the scheduling information. Exemplarily, the radio access network device can be a base station, for example.

[0037] In a possible implementation, the sending of the scheduling information includes:

[0038] Send the scheduling information within a first time period after receiving the first reference signal; or,

[0039] Send the scheduling information at the A-th time unit after receiving the first reference signal, where A is an integer greater than 0.

[0040] In a possible implementation, the data transmission is downlink data transmission;

[0041] Before receiving the first reference signal, the method further includes:

[0042] Send a first trigger signal, where the first trigger signal is used to trigger the first reference signal.

[0043] In a possible implementation, receiving the first reference signal includes:

[0044] Receiving the first reference signal within a second time period after sending the first trigger signal; or,

[0045] Receiving the first reference signal at the B-th time unit after sending the first trigger signal, where B is an integer greater than 0.

[0046] In a possible implementation, the first trigger signal is used for synchronization, and the first reference signal is used for channel measurement.

[0047] In a possible implementation, after receiving the first reference signal, the method further includes:

[0048] Sending a second reference signal, where the second reference signal is used for interference measurement;

[0049] Receiving interference measurement information.

[0050] In a possible implementation, sending the second reference signal includes:

[0051] Sending the second reference signal within a third time period after receiving the first reference signal; or,

[0052] Sending the second reference signal at the C-th time unit after receiving the first reference signal, where C is an integer greater than 0.

[0053] In a possible implementation, sending the scheduling information includes:

[0054] Sending the scheduling information within a fourth time period after receiving the interference measurement information; or,

[0055] The starting time unit of the scheduling information is the D-th time unit after the ending time unit of the interference measurement information, where D is an integer greater than 0.

[0056] In a possible implementation, the scheduling information further includes synchronization information corresponding to the first reference signal.

[0057] In a possible implementation, the first reference signal is used for synchronization, and the first reference signal includes multiple reference signals; the periods and frequency-domain positions of the transmission resources corresponding to the multiple reference signals are the same, and there are intervals in the time-domain positions of the transmission resources of the multiple reference signals.

[0058] In a third aspect, the present application provides a communication method, which is executed by a communication device. The communication device can be a terminal or a module in the terminal. In this method, the terminal receives a third reference signal, where the third reference signal is used to trigger scheduling information for data transmission, and the third reference signal is used for channel measurement and / or synchronization; then, the terminal receives the scheduling information.

[0059] In this embodiment, the third reference signal is used for fast synchronization and / or channel measurement, and at the same time is also used to trigger data transmission scheduling, enabling the terminal to quickly synchronize and / or measure the channel through the third reference signal when there is a data transmission requirement, and then obtain the scheduling information for data transmission. Compared with the terminal receiving the synchronization signal through blind detection and the base station periodically sending information for synchronization and / or channel measurement at a low frequency, the embodiment of the present application can achieve fast data transmission in the energy-saving mode through fewer transmission steps, which is beneficial to improving communication performance.

[0060] In a possible implementation, the receiving the scheduling information includes:

[0061] receiving the scheduling information within a fifth time period after receiving the third reference signal; or,

[0062] receiving the scheduling information at the E-th time unit after receiving the third reference signal, where E is an integer greater than 0.

[0063] In a possible implementation, the data transmission is uplink data transmission;

[0064] Before receiving the third reference signal, the method further includes:

[0065] sending a second trigger signal, where the second trigger signal is used to trigger the third reference signal.

[0066] In this implementation manner, a trigger process for uplink data transmission is designed, which can enable the terminal to quickly complete steps such as synchronization and channel measurement before uplink data transmission when there is an uplink data transmission requirement, which is beneficial to improving communication efficiency and reducing transmission overhead.

[0067] In a possible implementation, the second trigger signal is used for synchronization, and the third reference signal is used for channel measurement.

[0068] In this implementation manner, by designing the second trigger signal for synchronization and the third reference signal for channel measurement, the diversity of the scheme implementation is improved.

[0069] In a possible implementation, the third reference signal further includes synchronization information corresponding to the second trigger signal, or the scheduling information further includes synchronization information corresponding to the second trigger signal.

[0070] In this implementation manner, in the scheduling of uplink data transmission, when the first reference signal is used for synchronization, by carrying the synchronization information corresponding to the second trigger signal in the third reference signal / scheduling information, it is beneficial to save transmission overhead.

[0071] In a possible implementation, the third reference signal and the scheduling information belong to the same transmission structure.

[0072] In this implementation manner, by designing that the third reference signal and the scheduling information belong to the same transmission structure (or, by sending the third reference signal and the scheduling information at one time through one transmission structure), the number of transmission steps can be reduced, which is beneficial to improving transmission efficiency and reducing transmission delay.

[0073] In a possible implementation, the third reference signal is used for channel measurement; the method further includes:

[0074] Sending channel information corresponding to the third reference signal.

[0075] In this implementation manner, when the third reference signal is used for channel measurement, the terminal sends channel information after receiving the first reference signal, making the scheduling more accurate, which is beneficial to improving transmission performance.

[0076] In a possible implementation, the receiving the scheduling information includes:

[0077] Receiving the scheduling information within a sixth time period after sending the channel information; or,

[0078] The starting time unit of the scheduling information is the F-th time unit after the ending time unit of the channel information, where F is an integer greater than 0.

[0079] In a possible implementation, the third reference signal is used for synchronization, and the third reference signal includes multiple reference signals; the frequency-domain positions of the transmission resources of the multiple reference signals are the same, and there is an interval in the time-domain positions of the transmission resources of the multiple reference signals.

[0080] In this implementation manner, by designing that the frequency-domain positions of the transmission resources of the multiple reference signals included in the third reference signal are the same, and there is an interval in the time-domain positions of the transmission resources of the multiple reference signals, the third reference signal can have the synchronization function. Optionally, by designing that the antenna ports of the transmission resources corresponding to the multiple reference signals included in the third reference signal are the same, the third reference signal can have the function of channel measurement.

[0081] In a fourth aspect, the present application provides a communication method, which is executed by a communication device. The communication device may be a radio access network device or a module in a radio access network device. In this method, the radio access network device sends a third reference signal, where the third reference signal is used to trigger scheduling information for data transmission, and the third reference signal is used for channel measurement and / or synchronization; then, the radio access network device sends the scheduling information. Exemplarily, the radio access network device may be a base station, for example.

[0082] In a possible implementation, the sending of the scheduling information includes:

[0083] sending the scheduling information within a fifth time period after sending the third reference signal; or,

[0084] sending the scheduling information at the E-th time unit after sending the third reference signal, where E is an integer greater than 0.

[0085] In a possible implementation, the data transmission is uplink data transmission;

[0086] Before sending the third reference signal, the method further includes:

[0087] receiving a second trigger signal, where the second trigger signal is used to trigger the third reference signal.

[0088] In a possible implementation, the second trigger signal is used for synchronization, and the third reference signal is used for channel measurement.

[0089] In a possible implementation, the third reference signal further includes synchronization information corresponding to the second trigger signal, or the scheduling information further includes synchronization information corresponding to the second trigger signal.

[0090] In a possible implementation, the third reference signal and the scheduling information belong to the same transmission structure.

[0091] In a possible implementation, the third reference signal is used for channel measurement; the method further includes:

[0092] receiving channel information corresponding to the third reference signal.

[0093] In a possible implementation, the sending of the scheduling information includes:

[0094] sending the scheduling information within a sixth time period after receiving the channel information; or,

[0095] The start time unit of the scheduling information is the F-th time unit after the end time unit of the channel information, where F is an integer greater than 0.

[0096] In a possible implementation, the third reference signal is used for synchronization, and the third reference signal includes a plurality of reference signals; the frequency-domain positions of the transmission resources of the plurality of reference signals are the same, and there is an interval in the time-domain positions of the transmission resources of the plurality of reference signals.

[0097] In a fifth aspect, the present application provides a communication device, which includes units or modules for performing any method in the first aspect to the fourth aspect, or any possible implementation manner in any of the above aspects.

[0098] In a sixth aspect, the present application provides a communication device, which includes a processor, a transceiver, and a memory. The processor, the transceiver, and the memory are coupled. A computer program is stored in the memory; the processor and the transceiver are used to call the computer program in the memory, so that the communication device performs any method in the first aspect to the fourth aspect, or any possible implementation manner in any of the above aspects.

[0099] In a possible design, the communication device may be a chip or a device including a chip that implements the above method.

[0100] In a seventh aspect, the present application provides a communication device, which includes a processor and an interface circuit. The interface circuit is used to receive signals from other communication devices outside the communication device and transmit them to the processor, or send signals from the processor to other communication devices outside the communication device. The processor is used to implement any method in the first aspect to the fourth aspect, or any possible implementation manner in any of the above aspects through a logic circuit or by executing code instructions.

[0101] In an eighth aspect, the present application provides a computer-readable storage medium, in which a computer program or instruction is stored. When the computer program or instruction is executed by a computer, any method in the first aspect to the fourth aspect, or any possible implementation manner in any of the above aspects is implemented.

[0102] In a ninth aspect, the present application provides a computer program product. When a computer reads and executes the computer program product, the computer is caused to execute any method in the first aspect to the fourth aspect, or any possible implementation manner in any of the above aspects.

[0103] In a tenth aspect, the present application provides a communication system, which may include a terminal and a radio access network device. The terminal is used to execute the method shown in the above first aspect or any possible implementation manner of the first aspect, or is used to execute the method shown in the above third aspect or any possible implementation manner of the third aspect; the radio access network device is used to execute the method shown in the above second aspect or any possible implementation manner of the second aspect, or is used to execute the method shown in the above fourth aspect or any possible implementation manner of the fourth aspect. Description of the Drawings

[0104] Figure 1 FIG. is a schematic diagram of an architecture of a communication system to which an embodiment of the present application is applied;

[0105] Figure 2 FIG. is a schematic diagram of time units with different granularities provided by the present application;

[0106] Figure 3 FIG. is a schematic diagram of a base station side obtaining channel information;

[0107] Figure 4 FIG. is a schematic diagram of a terminal side completing time / frequency synchronization;

[0108] Figure 5 FIG. is a schematic flowchart of a communication method provided by an embodiment of the present application;

[0109] Figure 6 FIG. is a schematic diagram of the configuration of a first reference signal provided by an embodiment of the present application;

[0110] Figure 7 FIG. is a schematic diagram of scheduling information for a first reference signal triggering data transmission;

[0111] Figure 8 FIG. is another schematic flowchart of a communication method provided by an embodiment of the present application;

[0112] Figure 9 FIG. is a schematic diagram of scheduling information for a third reference signal triggering data transmission provided by an embodiment of the present application;

[0113] Figure 10 FIG. is a schematic diagram of the structure of a possible communication device provided by an embodiment of the present application;

[0114] Figure 11 FIG. is a schematic diagram of the structure of a possible communication device provided by an embodiment of the present application. Detailed Embodiments

[0115] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the drawings in the embodiments of the present application.

[0116] In the description of this application, "first", "second", etc. are only used to distinguish different objects, rather than to describe a specific order. In addition, unless otherwise specified, " / " means "or". For example, A / B can mean A or B. The "and / or" in this article is just a correlative relationship describing related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, "at least one" means one or more, and "multiple" means two or more. "At least one of the following" or its similar expressions refer to any combination of these items, including any combination of single item or plural items. For example, at least one of a, b, or c can mean: a, b, c; a and b; a and c; b and c; or a, b, and c. Where a, b, c can be single or multiple.

[0117] The terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device, etc. that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units not listed, or optionally also includes other steps or units inherent to these processes, methods, products, or devices, etc.

[0118] In this application, words such as "exemplary" or "for example" are used to represent examples, illustrations, or explanations. Any embodiment or design solution described as "exemplary", "for example", or "such as" in this application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of words such as "exemplary", "for example", or "such as" is intended to present relevant concepts in a specific manner.

[0119] It can be understood that in this application, "when", "if", and "in case" all refer to the device making corresponding processing under a certain objective situation, not limited to time, and it is not required that the device must have a judgment action when implemented, nor does it mean that there are other limitations.

[0120] In this application, elements represented in the singular are intended to mean "one or more", rather than "one and only one", unless otherwise specified.

[0121] It can be understood that in each embodiment of this application, "B corresponding to A" means that there is a corresponding relationship between A and B, and B can be determined according to A. Determining B according to A does not mean determining B only according to A, but also B can be determined according to A and / or other information.

[0122] To better understand the embodiments of this application, the system architecture involved in the embodiments of this application is introduced first as follows:

[0123] Please refer to Figure 1 , Figure 1 which is a schematic diagram of the architecture of the communication system to which the embodiments of the present application are applied. It should be noted that Figure 1 is a possible and non-limiting system schematic diagram. As Figure 1 shown, the communication system 10 includes a radio access network (RAN) 100 and a core network (CN) 200. Optionally, the communication system 10 may further include the Internet 300. The RAN 100 includes at least one RAN node (such as 110a and 110b in Figure 1 , collectively referred to as 110) and at least one terminal (such as 120a-120j in Figure 1 , collectively referred to as 120). The RAN 100 may also include other RAN nodes, for example, wireless relay devices and / or wireless backhaul devices (not shown in Figure 1 ). The terminal 120 is connected to the RAN node 110 wirelessly. The RAN node 110 is connected to the core network 200 wirelessly or by wire. The core network devices in the core network 200 and the RAN nodes 110 in the RAN 100 may be different physical devices respectively, or may be the same physical device integrating the core network logic function and the radio access network logic function, or may be a physical device integrating part of the functions of the core network devices and part of the functions of the RAN nodes 110. Terminals can be connected to each other, and RAN nodes 110 can be connected to each other, either wirelessly or by wire. Figure 1 This is just a schematic diagram, and other network devices may also be included in this communication system, such as wireless relay devices and wireless backhaul devices, which are not drawn in Figure 1 .

[0124] The RAN 100 may be a cellular access system related to the 3rd generation partnership project (3GPP), for example, a 4G or 5G mobile communication system, or an evolved system for the future (such as a 6G mobile communication system). The RAN 100 may also be an open RAN (O-RAN or ORAN), a cloud radio access network (CRAN), or a wireless fidelity (WiFi) system. The RAN 100 may also be a fusion of two or more of the above systems.

[0125] RAN node 110, sometimes also referred to as a radio access network device, access network device, RAN entity, or access node, etc., forms part of a communication system and is used to assist a terminal in achieving wireless access. Multiple RAN nodes 110 in communication system 10 can be of the same type or different types. In some scenarios, the roles of RAN node 110 and terminal 120 are relative. For example, Figure 1 network element 120i can be a helicopter or a drone, which can be configured as a mobile base station. For terminal 120j that accesses RAN 100 through network element 120i, network element 120i is a base station; but for base station 110a, network element 120i is a terminal. RAN node 110 and terminal 120 are sometimes both referred to as communication devices. For example, Figure 1 network elements 110a and 110b in the figure can be understood as communication devices with base station functions, and network elements 120a - 120j can be understood as communication devices with terminal functions.

[0126] In a possible scenario, RAN node 110 can be a base station, evolved NodeB (eNodeB), access point (AP), transmission reception point (TRP), next generation NodeB (gNB), next generation base station in a 6th generation (6G) mobile communication system, base station in a future mobile communication system, or access node in a WiFi system, etc. RAN node 110 can be a macro base station (such as Figure 1 110a in the figure), micro base station or indoor station (such as Figure 1 110b in the figure), relay node or donor node, or a radio controller in a CRAN scenario. Optionally, RAN node 110 can also be a server, wearable device, vehicle or in - vehicle device, etc. For example, the access network device in vehicle - to - everything (V2X) technology can be a road side unit (RSU). All or part of the functions of RAN node 110 in this application can also be implemented by software functions running on hardware, or by virtualized functions instantiated on a platform (such as a cloud platform). RAN node 110 in this application can also be a logical node, logical module or software that can implement all or part of the functions of RAN node 110.

[0127] In another possible scenario, multiple RAN nodes 110 cooperate to assist a terminal in achieving wireless access, and different RAN nodes 110 respectively implement some functions of a base station. For example, the RAN node 110 may be a central unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU), etc. The CU and the DU may be separately provided, or may also be included in the same network element, such as a baseband unit (BBU). The RU may be included in a radio frequency device or a radio frequency unit, such as included in a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH).

[0128] In different systems, the CU (or CU-CP and CU-UP), DU, or RU may also have different names, but those skilled in the art can understand their meanings. For example, in the ORAN system, the CU may also be referred to as an O-CU (open CU), the DU may also be referred to as an O-DU, the CU-CP may also be referred to as an O-CU-CP, the CU-UP may also be referred to as an O-CU-UP, and the RU may also be referred to as an O-RU. For the convenience of description, in this application, the CU, CU-CP, CU-UP, DU, and RU are used as examples for description. Any one of the CU (or CU-CP, CU-UP), DU, and RU in this application may be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0129] A terminal can also be referred to as a terminal device, user equipment (UE), mobile station, mobile terminal, etc. Terminals can be widely applied in various scenarios, such as device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (IoT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grid, smart home, smart office, smart wearables, smart transportation, smart city, etc. A terminal can be a mobile phone, a tablet computer, a computer with wireless transceiver function, a wearable device, a vehicle, a drone, a helicopter, an airplane, a ship, a robot, a robotic arm, a smart home device, etc. The embodiments of the present application do not limit the device form of the terminal. For ease of description, the following will take the terminal as an example for detailed description.

[0130] For ease of description, the following will describe the base station as an example of the RAN node 110. The base station and the terminal can be fixed or mobile. The base station and the terminal can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on the water surface; they can also be deployed on airplanes, balloons, and artificial satellites. The embodiments of the present application do not limit the application scenarios of the base station and the terminal.

[0131] The roles of the base station and the terminal can be relative. For example, Figure 1 the helicopter or drone 120i in can be configured as a mobile base station. For the terminals 120j that access the radio access network 100 through 120i, the terminal 120i is a base station; but for the base station 110a, 120i is a terminal, that is, the communication between 110a and 120i is through the radio air interface protocol. Of course, the communication between 110a and 120i can also be through the interface protocol between base stations. At this time, relative to 110a, 120i is also a base station. Therefore, both the base station and the terminal can be uniformly referred to as communication devices. Figure 1 The 110a and 110b in can be referred to as communication devices with base station functions. Figure 1 The 120a - 120j in can be referred to as communication devices with terminal functions.

[0132] Communication can be carried out between a base station and a terminal, between base stations, or between terminals through licensed spectrum, unlicensed spectrum, or both simultaneously; it can be carried out through spectrum below 6 gigahertz (GHz) or above 6 GHz, or both simultaneously. Embodiments of this application do not limit the spectrum resources used for wireless communication.

[0133] In embodiments of this application, the functions of a base station can also be performed by modules (such as chips) in the base station or by a control subsystem with base station functions. The control subsystem with base station functions here can be a control center in application scenarios such as smart grids, industrial control, intelligent transportation, and smart cities. The functions of a terminal can also be performed by modules (such as chips or modems) in the terminal or by a device with terminal functions.

[0134] In this application, the base station sends downlink signals or downlink information to the terminal, and the downlink information is carried on the downlink channel; the terminal sends uplink signals or uplink information to the base station, and the uplink information is carried on the uplink channel. To communicate with the base station, the terminal needs to establish a wireless connection in the cell controlled by the base station. The cell that has established a wireless connection with the terminal is called the serving cell of the terminal. When the terminal communicates with the serving cell, it is also interfered by signals from neighboring cells.

[0135] To facilitate understanding of the relevant content of embodiments of this application, some knowledge required for the solutions of this application will be introduced below. It should be noted that these explanations are for making the embodiments of this application easier to understand and should not be regarded as limiting the scope of protection required by this application.

[0136] (1) Time unit

[0137] A time unit is a time-domain unit for signal transmission, which is a kind of granularity in the time domain. A time unit consists of multiple symbols. Alternatively, a time unit can be a radio frame, a subframe, a slot, a mini-slot, or a symbol. Figure 2 Shown is an example of the relationship between time units of different granularities. Figure 2In it, the time domain length of a radio frame is 10 milliseconds (ms). A radio frame may include 10 subframes, and the time domain length of a subframe is 1 ms. A subframe may include one or more time slots. Specifically, the number of time slots included in a subframe is related to the subcarrier space (SCS). For the case where the SCS is 15 kHz, the time domain length of a time slot is 1 ms. A time slot includes 14 symbols.

[0138] 2. Channel Information

[0139] During the process of the signal passing through the wireless channel from the transmitter to the receiver, fading may occur due to possible scattering, reflection, and attenuation of energy with distance. Channel information is used to characterize the characteristics of the wireless channel and carry channel-related content. A communication device usually obtains channel information through reference signals and channel measurements. A reference signal is a known signal provided by the transmitter to the receiver for channel estimation or channel detection. The reference signal can be used for channel measurement, interference measurement, etc. For example, a terminal obtains channel information by measuring parameters such as the reference signal receiving quality (RSRQ) and the signal-to-noise ratio (SNR). The downlink reference signal can be, for example, the channel state information-reference signal (CSI-RS). The base station sends the CSI-RS to the terminal, and the terminal measures the channel based on the CSI-RS to obtain the channel state information (CSI) and reports the CSI to the base station. Thus, the terminal and the base station align their understanding of the channel state. The uplink reference signal can be, for example, the sounding reference signal (SRS). The terminal sends the SRS to the base station, and the base station measures the channel based on the SRS to know the channel state.

[0140] Specifically, in the current new radio (NR) system, there are mainly two ways for the base station side to obtain channel information, as shown in (a) and (b) in Figure 3 as follows:

[0141] 1) The base station sends the channel state information reference signal (CSI-RS), the terminal receives the CSI-RS and measures the channel information, and finally generates the channel state information (CSI) and reports it to the base station;

[0142] 2) The terminal sends a sounding reference signal (SRS), and the base station receives the SRS and measures the precoding. At the same time, for downlink data transmission in the time division duplex (TDD) mode, after the base station obtains the precoding, it will further send precoded CSI-RS (i.e., precoded CSI-RS) based on the precoding. After the terminal receives the precoded CSI-RS, it will further measure the interference information, and finally obtain a rank indicator (RI) and a channel quality indicator (CQI), and report them to the base station.

[0143] The reporting methods of channel information are divided into three categories: periodic reporting, semi-static reporting, and aperiodic reporting. For periodic reporting and semi-static channel information reporting, the channel information is configured with periodic transmission resources, and the base station and the terminal will send or receive channel information according to the configured periodic transmission resources. Aperiodic channel information reporting is triggered by the base station sending downlink control information. At the same time, aperiodic channel information reporting is usually one-time. Once the terminal sends the channel information, the transmission of the channel information is completed. To ensure the timeliness of channel information, the base station usually configures the terminal with periodic channel information reporting, that is, the base station will send CSI-RS periodically to facilitate the terminal to report CSI based on the CSI-RS.

[0144] It should be understood that after the base station obtains the channel information of the terminal, the base station will perform corresponding uplink / downlink data scheduling according to the channel information.

[0145] 3. Time / Frequency Synchronization

[0146] In the current NR communication system, there are mainly two types of signals used for time / frequency synchronization: the synchronization signal and PBCH block (SSB) and the TRS.

[0147] SSB is a common signal transmitted periodically. SSB occupies 20 resource blocks (RBs) in the frequency domain. SSB can include two parts, namely the synchronization signal (SS) and the physical broadcast channel block (PBCH). Among them, SS can include the primary synchronization signal (PSS) and the secondary synchronization signal (SSS). Therefore, it can also be considered that SSB includes three parts, that is, SSB includes PSS, SSS, and PBCH. As Figure 4 shown in (a) of Figure 4 , the terminal periodically detects SSB and completes preliminary time-frequency synchronization (hereinafter referred to as primary synchronization) based on the received SSB. In addition to SSB, the base station can also send TRS for the terminal to complete more refined time / frequency synchronization. In the frequency domain, the number of pilots transmitted by TRS in the frequency domain is larger, and the timing deviation measurement resolution of TRS is higher. In the time domain, SSS and PSS are generally separated by two symbols, while TRS occupies two consecutive time slots, and the transmission resources of TRS are separated by 4 symbols within each time slot, and the frequency offset measurement resolution of TRS is higher. Therefore, the synchronization accuracy of TRS is higher than that of SSB. TRS can be understood as a special CSI-RS. As

[0148] 4. Transmission Structure

[0149] The transmission structure can be understood as transmitting multiple pieces of information as a whole. That is, for the transmission of a transmission structure, from the perspective of the sending end, all the information within the transmission structure should be sent at once; from the perspective of the receiving end, all the information within the transmission structure should be received at once. A transmission structure can be a frame structure, or an independent transmission channel, or a fixed format.

[0150] 5. Common Signal

[0151] It can be called public information or non-dedicated information, or understood as information sent by a communication device to multiple communication devices. Taking downlink communication as an example, public information can be understood as information sent by a base station to multiple terminals or a group of terminals in a cell, or understood as information sent by a network device to a certain terminal or a group of terminals in a cell in an unspecified manner, or understood as information that can be jointly used by multiple terminals or a group of terminals in a cell. For example, public signals can be system information, synchronization signals, or paging messages, etc. For example, public signals can be used for processes such as terminal synchronization with the base station, terminal identification of the cell, terminal initial access to the cell, neighbor cell measurement, or cell handover.

[0152] 6. Base station energy saving

[0153] The base station needs to periodically send some public signals to facilitate terminal identification of the base station and access to the network. For cells with no or little traffic transmission demand, the base station still needs to periodically send public signals, which results in a large overhead for the base station. A possible energy-saving method is to reduce the transmission frequency of public signals by the base station by lengthening the public signal transmission period, thereby achieving base station energy saving. However, in this method, when the terminal has data transmission requirements, the following problems will occur: on the one hand, since there is no periodically transmitted CSI-RS / SRS, the base station cannot obtain accurate channel information of the terminal, so it cannot accurately schedule data transmission for the terminal; on the other hand, in the energy-saving mode, if only long-period SSB / DRS is sent, only basic synchronization is maintained between the terminal side and the base station side, without more accurate synchronization, resulting in significant performance loss when the terminal side receives transmissions with a higher modulation order (for example, the modulation order is 256 quadrature amplitude modulation (QAM)) or a higher coding rate (for example, the coding rate is 3 / 4 or above). Based on this, relevant technical personnel have proposed that when there is a data transmission demand, the base station separately schedules reference signals for synchronization and reference signals for channel measurement. Only after the terminal completes synchronization and reports the channel state information can the base station schedule and transmit data. However, based on this method of data transmission, the entire process is both cumbersome and time-consuming, which will seriously affect the user-perceived throughput (UPT) index.

[0154] Based on the above analysis, this application proposes a communication method. By designing a reference signal that can simultaneously trigger data transmission scheduling, synchronization, and / or channel measurement, fast data transmission in the energy-saving mode can be achieved, which is beneficial to improving communication performance.

[0155] The following provides a detailed introduction to the communication method and communication device provided in this application:

[0156] Please refer to Figure 5 , Figure 5 which is a schematic flowchart of a communication method provided by an embodiment of the present application. Figure 5 The execution subject of the method shown can be a base station or a terminal. Alternatively, Figure 5 the execution subject of the method shown can also be a chip in a base station or a terminal. For ease of description, the present application mainly describes the execution subject as a base station or a terminal. It should be understood that Figure 5 is a schematic flowchart of an embodiment of the method of the present application, which shows the detailed communication steps or operations of the method. However, these steps or operations are only examples, and the embodiments of the present application can also perform other operations or Figure 5 variations of various operations in Figure 5 . In addition, Figure 5 each step in Figure 5 can be executed in a different order from that presented in Figure 5 , and it is possible that not all operations in

[0157] S501. The terminal sends a first reference signal to the base station. Correspondingly, the base station receives the first reference signal from the terminal.

[0158] Specifically, the first reference signal is used to trigger scheduling information for data transmission (or the first reference signal is used to trigger the base station to send scheduling information for data transmission, or the first reference signal is used to trigger the terminal to receive scheduling information for data transmission), and the first reference signal is used for channel measurement and / or synchronization. It can be understood that in the present application, the description of "trigger" can also be replaced with descriptions such as "request", "enable", "indicate", etc., which will not be elaborated later. It can be understood that the data transmission involved in the present application can refer to uplink data transmission or downlink data transmission. Among them, uplink data transmission refers to the terminal sending data to the base station, and downlink data transmission refers to the base station sending data to the terminal.

[0159] It is understandable that when the first reference signal is used for synchronization, the terminal and the base station can complete synchronization through uplink transmission. In a possible way, the first reference signal may include multiple reference signals. The periods and frequency-domain positions of the transmission resources corresponding to the multiple reference signals are the same, and there is an interval in the time-domain positions of the transmission resources of the multiple reference signals. Among them, the above-mentioned frequency-domain position may include bandwidth, subcarriers used, etc. Optionally, the pilot sequences corresponding to the transmission resources of the multiple reference signals may also be the same (or it can be described that the pilot sequences of the reference signals are the same). Under this design, the terminal can achieve time-frequency synchronization based on the first reference signal. Optionally, the same frequency-domain position of the transmission resources of the multiple reference signals in this application can also be understood as: the antenna ports of the transmission resources corresponding to the multiple reference signals are the same. That is, the same antenna port means the same frequency-domain resources used for transmission.

[0160] It should be noted that the interval in the time-domain positions of the transmission resources of the above-mentioned multiple reference signals can be understood as: the transmission resources of the multiple reference signals are discontinuous in the time domain, or there is an interval in the time-domain positions of the transmission resources of adjacent reference signals among the multiple reference signals. The time-domain positions of the multiple reference signals may be equally spaced or may also be unequally spaced. In a possible way, the time-domain positions of the transmission resources of the multiple reference signals belong to the same time slot. Or, the time-domain positions of the transmission resources of the multiple reference signals are located in two or more consecutive time slots.

[0161] For example, as Figure 6 shown in (a) of, multiple reference signals are distributed in the same time slot (for example, time slot 1), and there is an interval of 3 OFDM symbols between the time-domain positions of the transmission resources of each reference signal. Figure 6 shown in (a) of shows the transmission resources of 4 reference signals. The OFDM symbol indices of the time-domain positions of the transmission resources of the 4 reference signals are 0, 4, 8, and 12 respectively. The frequency-domain positions of the transmission resources of the 4 reference signals are the same, and the subcarrier indices are all 0, 4, 8. Another example, as Figure 6 shown in (b) of, multiple reference signals are distributed in 2 consecutive time slots (for example, time slot 1 and time slot 2). Each time slot contains two reference signals. Among them, there is an interval of 3 OFDM symbols between the time-domain positions of the transmission resources of the reference signals in the same time slot. Figure 6 shown in (b) of shows the transmission resources of 4 reference signals. The OFDM symbol indices of the time-domain positions of the transmission resources of the reference signals in each time slot are 8 and 12 respectively. The frequency-domain positions of the transmission resources of the 4 reference signals are the same, and the subcarrier indices are all 0, 4, 8.

[0162] Exemplarily, the pilot sequences of the reference signals involved in this application may satisfy the following formula:

[0163] Among them, r(m) is the pilot sequence, c represents the base sequence for generating the pilot sequence, and m represents the value corresponding to the m-th position in the pilot sequence.

[0164] Understandably, when the first reference signal is used for channel measurement, the transmission resources of multiple reference signals included in the first reference signal can all correspond to multiple antenna ports (or it can be described that the transmission resources of each reference signal among multiple reference signals include multiple antenna ports). Under this design, the terminal can perform channel measurement based on the first reference signal to obtain the channel information corresponding to multi-stream transmission, so as to enable multi-stream transmission.

[0165] It is not difficult to understand that when the first reference signal can be used for synchronization and channel measurement simultaneously, the design of the first reference signal needs to meet the conditions that the first reference signal needs to meet when used for synchronization and the conditions that the first reference signal needs to meet when used for channel measurement at the same time. That is to say, the descriptions of different functions of the first signal in this application can be combined with each other, and will not be elaborated below.

[0166] S502. The base station sends scheduling information to the terminal. Correspondingly, the terminal receives the scheduling information from the base station.

[0167] Specifically, after the base station receives the first reference signal, the base station can send scheduling information to the terminal. As described above, the first reference signal can be used to trigger the scheduling information for uplink data transmission (or it can be said that the first reference signal is used to trigger the base station to send the scheduling information for uplink data transmission, or the first reference signal is used to trigger the terminal to receive the scheduling information for uplink data transmission), or the first reference signal can also be used to trigger the scheduling information for downlink data transmission (or it can be said that the first reference signal is used to trigger the base station to send the scheduling information for downlink data transmission, or the first reference signal is used to trigger the terminal to receive the scheduling information for downlink data transmission). Understandably, the scheduling information for uplink data transmission can also be described as: this scheduling information is used to schedule uplink data transmission; the scheduling information for downlink data transmission can also be described as: this scheduling information is used to schedule downlink data transmission. Exemplarily, the uplink data can be the physical uplink shared channel (PUSCH), and the downlink data can be the physical downlink shared physical channel (PDSCH). Correspondingly, the scheduling information for scheduling PUSCH transmission can be the downlink control information (DCI) corresponding to PUSCH; the scheduling information for scheduling PDSCH transmission can be the DCI corresponding to PDSCH, etc., which is not limited.

[0168] It should be understood that in both the uplink data transmission and downlink data transmission scenarios, the scheduling information for triggering data transmission by the first reference signal can be understood in the following two ways:

[0169] First, the base station can send scheduling information within a first time period after receiving the first reference signal (or it can be described that the terminal can receive scheduling information within a first time period after sending the first reference signal, or it can be described that the terminal can receive scheduling information within a time window after sending the first reference signal, and this time window is a time period, such as the first time period). The length of the first time period can be predefined by the protocol, or it can also be preconfigured by the base station for the terminal. Optionally, the starting time domain position / starting time unit of the first time period can be the X1-th time unit after the terminal sends / receives the first reference signal, where X1 is a positive integer. X1 can be predefined by the protocol, or it can be preconfigured by the base station for the terminal. The unit of the time unit involved in this application can be symbols, time slots, mini time slots, radio frames, subframes, seconds (s), milliseconds (ms), etc.

[0170] Second, the base station can receive scheduling information at the A-th time unit after sending the first reference signal (or it can be described that the terminal can receive scheduling information at the A-th time unit after sending the first reference signal, or it can be described that the starting time unit of the scheduling information is the A-th time unit after the end time unit of the first reference signal, or it can be described that there are A time units between the starting time unit of the scheduling information and the end time unit of the first reference signal), where A is an integer greater than 0 (or it can be described that A is a positive integer). A can be predefined by the protocol, or it can be preconfigured by the base station for the terminal. It should be understood that the starting time unit of the above scheduling information can be understood as the time unit where the starting time domain position of the transmission resource of the scheduling information is located, and the end time unit of the first reference signal can be understood as the time unit where the end time domain position of the transmission resource of the first reference signal is located.

[0171] Exemplarily, as Figure 7 (a) and (b) in show two ways of the scheduling information for triggering data transmission by the first reference signal.

[0172] It can be understood that in both the uplink data transmission and downlink data transmission scenarios, when the first reference signal is used for synchronization, the base station can also send synchronization information corresponding to the first reference signal to the terminal (or it can be described that the first reference signal sent by the terminal is also used to trigger the base station to send synchronization information). Correspondingly, the terminal receives the synchronization information corresponding to the first reference signal from the base station. It should be understood that the synchronization information usually needs to be informed to the terminal before demodulating data transmission information (such as uplink / downlink data) so that the terminal can complete time-frequency calibration before data transmission and improve transmission performance.

[0173] Exemplarily, the synchronization information corresponding to the first reference signal may be carried in the scheduling information of the uplink / downlink data transmission (or described as including / carrying the synchronization information corresponding to the first reference signal in the scheduling information), or the synchronization information corresponding to the first reference signal may be carried in the reference signal corresponding to the uplink / downlink data transmission. Here, the reference signal corresponding to the uplink / downlink data transmission may be understood as the demodulation reference signal corresponding to the uplink / downlink transmission, or in other words, the reference signal used for demodulating the uplink / downlink transmission, and its function is to demodulate data. For example, the reference signal corresponding to the uplink data transmission may be the demodulation reference signal (DMRS), and the reference signal corresponding to the downlink data transmission may also be DMRS, etc., without limitation.

[0174] The synchronization information in this application is information that can be used for terminal synchronization. In a possible manner, the synchronization information may include at least one of timing offset or frequency offset. The terminal adjusts timing and frequency according to the synchronization information, so as to achieve synchronization.

[0175] The following describes the unique features of downlink data transmission different from uplink data transmission.

[0176] In a possible embodiment, when the scheduling information of the data transmission is the scheduling information of the downlink data transmission, before the terminal sends the first reference signal (i.e., step S501), the method further includes step S500 as shown in Figure 5 : The base station sends a first trigger signal to the terminal. Correspondingly, the terminal receives the first trigger signal from the base station, and this first trigger signal is used to trigger the first reference signal (or described as this first trigger signal is used to trigger the terminal to send the first reference signal). It can be understood that triggering the terminal to send the first reference signal through the first trigger signal can enable the terminal to quickly complete synchronization, channel measurement and other steps before the downlink data transmission, which is beneficial to improving the data transmission efficiency. Among them, the first trigger signal is used to trigger the first reference signal can be understood in the following two ways:

[0177] First, the terminal may send the first reference signal within a second time period after receiving the first trigger signal (or described as the base station may receive the first reference signal within a second time period after sending the first trigger signal). The length of the second time period may be predefined by the protocol, or may also be pre-configured by the base station to the terminal. Optionally, the starting time domain position / starting time unit of the second time period may be the X2th time unit after the terminal receives / sends the first trigger signal by the base station, and X2 is a positive integer. Among them, X2 may be predefined by the protocol, or pre-configured by the base station to the terminal.

[0178] Second, the terminal may send a first reference signal in the B-th time unit after receiving the first trigger signal (or it can be described that the base station may receive the first reference signal in the B-th time unit after sending the first trigger signal, or it can be described that the starting time unit of the first reference signal is the B-th time unit after the end time unit of the first trigger signal, or it can be described that there is an interval of B time units between the starting time unit of the first reference signal and the end time unit of the first trigger signal). Here, B is an integer greater than 0. B can be predefined by the protocol or, alternatively, configured by the base station for the terminal in advance. It should be understood that the starting time unit of the above first reference signal can be understood as the time unit where the starting time domain position of the transmission resource of the first reference signal is located, and the end time unit of the first trigger signal can be understood as the time unit where the end time domain position of the transmission resource of the first trigger signal is located).

[0179] Optionally, the first trigger signal can also be used for synchronization. Correspondingly, the first reference signal can be used for channel measurement rather than for synchronization. That is to say, the first trigger signal can be used to trigger the first reference signal and for synchronization, and the first reference signal can be used to trigger the scheduling information of data transmission and for channel measurement).

[0180] In a possible embodiment, when the scheduling information of data transmission is the scheduling information of downlink data transmission, after the terminal sends the first reference signal (i.e., step S501) and before the terminal receives the scheduling information (i.e., step S502), the method may further include the following steps S5001 - S5002 (not shown in Figure 5 ):

[0181] S5001. The base station sends a second reference signal to the terminal. Correspondingly, the terminal receives the second reference signal from the base station).

[0182] Specifically, the second reference signal can be used for interference measurement. Exemplarily, the second reference signal can be a precoded CSI-RS).

[0183] In a possible implementation, the terminal may receive the second reference signal within a third time period after sending the first reference signal (or it can be described that the base station may send the second reference signal within a third time period after receiving the first reference signal). The length of the third time period can be predefined by the protocol or, alternatively, configured by the base station for the terminal in advance. Optionally, the starting time domain position / starting time unit of the third time period can be the X3-th time unit after the terminal sends / the base station receives the first reference signal, where X3 is a positive integer. X3 can be predefined by the protocol or, alternatively, configured by the base station for the terminal in advance. Optionally, the third time period and the first time period can be the same time period, or, the third time period and the first time period can also be different time periods, which is not limited).

[0184] In a possible implementation, the terminal may receive a second reference signal in the C-th time unit after sending the first reference signal (or it can be described that the base station may send the second reference signal in the C-th time unit after receiving the first reference signal, or it can be described that the starting time unit of the second reference signal is the C-th time unit after the ending time unit of the first reference signal, or it can be described that there are C time units between the starting time unit of the second reference signal and the ending time unit of the first reference signal). Here, C is an integer greater than 0. C can be predefined by the protocol or configured by the base station for the terminal in advance. It should be understood that the starting time unit of the above second reference signal can be understood as the time unit where the starting time domain position of the transmission resource of the second reference signal is located, and the ending time unit of the first reference signal can be understood as the time unit where the ending time domain position of the transmission resource of the first reference signal is located. Optionally, C is less than A, that is, after the terminal sends the first reference signal, it needs to first receive the second reference signal to complete the measurement (and report interference measurement information), and then receive the scheduling information for downlink data transmission.

[0185] S5002: The terminal sends interference measurement information to the base station. Correspondingly, the base station receives the interference measurement information from the terminal.

[0186] Exemplarily, the interference measurement information can be one or more of {cri-RI-CQI}, {cri-RI-i1}, {cri-RI-i1-CQI}.

[0187] In a possible implementation, the terminal may receive scheduling information within the fourth time period after sending the interference measurement information (or it can be described that the base station may send scheduling information within the fourth time period after receiving the interference measurement information). The length of the fourth time period can be predefined by the protocol or can also be configured by the base station for the terminal in advance. Optionally, the starting time domain position / starting time unit of the fourth time period can be the X4-th time unit after the terminal sends / the base station receives the interference measurement information, where X4 is a positive integer. X4 can be predefined by the protocol or configured by the base station for the terminal in advance.

[0188] In a possible implementation, the terminal may receive scheduling information in the D-th time unit after sending interference measurement information (or it can be described that the base station may send scheduling information in the D-th time unit after receiving interference measurement information, or it can be described that the starting time unit of the scheduling information is the D-th time unit after the end time unit of the interference measurement information, or it can be described that there are D time units between the starting time unit of the scheduling information and the end time unit of the interference measurement information, or it can be described that the terminal may send interference measurement information D time units before receiving the scheduling information). Here, D is an integer greater than 0. D can be predefined by the protocol, or configured by the base station for the terminal in advance. It should be understood that the starting time unit of the above scheduling information can be understood as the time unit where the starting time-domain position of the transmission resource of the scheduling information is located, and the end time unit of the interference measurement information can be understood as the time unit where the end time-domain position of the transmission resource of the interference measurement information is located.

[0189] In a possible implementation, the terminal may receive scheduling information within the seventh time period after receiving the second reference signal (or it can be described that the base station may send scheduling information within the seventh time period after sending the second reference signal). The length of the seventh time period can be predefined by the protocol, or can also be configured by the base station for the terminal in advance. Optionally, the starting time-domain position / starting time unit of the seventh time period can be the X7-th time unit after the terminal receives / sends the second reference signal, where X7 is a positive integer. X7 can be predefined by the protocol, or configured by the base station for the terminal in advance.

[0190] In a possible implementation, the terminal may receive scheduling information in the G-th time unit after receiving the second reference signal (or it can be described that the base station may send scheduling information in the G-th time unit after sending the second reference signal, or it can be described that the starting time unit of the scheduling information is the G-th time unit after the end time unit of the second reference signal, or it can be described that there are G time units between the starting time unit of the scheduling information and the end time unit of the second reference signal). Here, G is an integer greater than 0. G can be predefined by the protocol, or configured by the base station for the terminal in advance. It should be understood that the starting time unit of the above scheduling information can be understood as the time unit where the starting time-domain position of the transmission resource of the scheduling information is located, and the end time unit of the second reference signal can be understood as the time unit where the end time-domain position of the transmission resource of the second reference signal is located.

[0191] In the embodiments of the present application, by designing an uplink reference signal (i.e., the first reference signal), when there is a data transmission requirement in the energy-saving mode, the terminal sends the first reference signal for fast synchronization and / or channel measurement, and at the same time, it is also used to trigger data transmission scheduling. In this way, fast data transmission in the energy-saving mode can be achieved through fewer transmission steps, which is beneficial to improving communication performance.

[0192] Please refer to Figure 8 , Figure 8 which is another schematic flowchart of the communication method provided by the embodiments of the present application. Figure 8 The execution subject of the method shown can be a base station or a terminal. Or, Figure 8 the execution subject of the method shown can also be a chip in the base station or the terminal. For ease of description, the present application mainly describes the execution subject as the base station or the terminal. It should be understood that Figure 8 is a schematic flowchart of the method embodiment of the present application, which shows the detailed communication steps or operations of the method. However, these steps or operations are only examples, and the embodiments of the present application can also perform other operations or Figure 8 variations of various operations in Figure 8 . In addition, Figure 8 each step in Figure 8 can be executed in a different order from that presented in Figure 8 , and it is possible that not all the operations in

[0193] S801. The base station sends a third reference signal to the terminal. Correspondingly, the terminal receives the third reference signal from the base station.

[0194] Here, the understanding of step S801 can refer to Figure 5 the description of S501 in the corresponding embodiment. The difference is that the first reference signal is the reference signal sent by the terminal to the base station (or described as the first reference signal is the uplink reference signal), and the third reference signal is the reference signal sent by the base station to the terminal (or described as the third reference signal is the downlink reference signal). In addition, when the third reference signal is used for synchronization, the third reference signal can specifically be SSB or TRS, etc., which is not limited in the present application. Specifically, by measuring the third reference signal, the terminal can measure the timing deviation and / or frequency domain deviation, and then adjust the timing and frequency based on the measured timing deviation and / or frequency domain deviation, so as to achieve synchronization.

[0195] S802. The base station sends scheduling information to the terminal. Correspondingly, the terminal receives the scheduling information from the base station.

[0196] Specifically, after the base station sends the third reference signal, the base station can further send scheduling information to the terminal. As described above, the third reference signal can be used to trigger scheduling information for uplink data transmission (or it can be said that the third reference signal is used to trigger the base station to send scheduling information for uplink data transmission, or the third reference signal is used to trigger the terminal to receive scheduling information for uplink data transmission), or the third reference signal can also be used to trigger scheduling information for downlink data transmission (or it can be said that the third reference signal is used to trigger the base station to send scheduling information for downlink data transmission, or the third reference signal is used to trigger the terminal to receive scheduling information for downlink data transmission). It should be understood that regardless of whether it is an uplink data transmission or a downlink data transmission scenario, the scheduling information triggered by the third reference signal for data transmission can be understood as the following two types:

[0197] First, the base station can send scheduling information within the fifth time period after sending the third reference signal (or it can be described that the terminal can receive scheduling information within the fifth time period after receiving the third reference signal, or it can be described that the terminal can receive scheduling information within a time window after receiving the third reference signal, and this time window is a time period, such as the fifth time period). The length of the fifth time period can be predefined by the protocol, or it can also be pre-configured by the base station for the terminal. Optionally, the starting time domain position / starting time unit of the fifth time period can be the X5th time unit after the terminal receives / sends the third reference signal, where X5 is a positive integer. X5 can be predefined by the protocol, or it can be pre-configured by the base station for the terminal. The unit of the time unit involved in this application can be symbols, time slots, micro time slots, radio frames, sub-frames, seconds (s), milliseconds (ms), etc., and this application does not limit this.

[0198] Second, the base station can receive scheduling information at the E-th time unit after receiving the third reference signal (or it can be described that the terminal can receive scheduling information at the E-th time unit after receiving the third reference signal, or it can be described that the starting time unit of the scheduling information is the E-th time unit after the end time unit of the third reference signal, or it can be described that there is an interval of E time units between the starting time unit of the scheduling information and the end time unit of the third reference signal), where E is an integer greater than 0 (or it can be described that E is a positive integer). E can be predefined by the protocol, or it can be pre-configured by the base station for the terminal. It should be understood that the starting time unit of the above scheduling information can be understood as the time unit where the starting time domain position of the transmission resource of the scheduling information is located, and the end time unit of the third reference signal can be understood as the time unit where the end time domain position of the transmission resource of the third reference signal is located.

[0199] Exemplarily, as Figure 9 (a) and (b) in show two cases of the scheduling information triggered by the third reference signal for data transmission.

[0200] It is understandable that, whether in the uplink data transmission scenario or the downlink data transmission scenario, when the third reference signal is used for channel measurement, the terminal can perform channel measurement based on the third reference signal and send the channel information corresponding to the third reference signal to the base station. Correspondingly, the base station receives the channel information corresponding to the third reference signal from the terminal.

[0201] In a possible implementation, the terminal can receive scheduling information within a sixth time period after sending the channel information (or it can be described that the base station sends scheduling information within a sixth time period after receiving the channel information). The length of the sixth time period can be predefined by the protocol, or it can also be pre-configured by the base station to the terminal. Optionally, the starting time domain position / starting time unit of the sixth time period can be the X6th time unit after the terminal receives / sends the third reference signal, where X6 is a positive integer. X6 can be predefined by the protocol, or pre-configured by the base station to the terminal.

[0202] In a possible implementation, the starting time unit of the scheduling information is the Fth time unit after the ending time unit of the channel information (or it can be described that the base station can send the scheduling information at the Fth time unit after receiving the channel information, or it can be described that the starting time unit of the scheduling information is the Fth time unit after the ending time unit of the channel information, or it can be described that there are F time units between the starting time unit of the scheduling information and the ending time unit of the channel information, or it can be described that the terminal can send the channel information F time units before receiving the scheduling information). Where F is an integer greater than 0. F can be predefined by the protocol, or pre-configured by the base station to the terminal. It should be understood that the starting time unit of the above scheduling information can be understood as the time unit where the starting time domain position of the transmission resource of the scheduling information is located, and the ending time unit of the channel information can be understood as the time unit where the ending time domain position of the transmission resource of the channel information is located.

[0203] In a possible implementation, when the scheduling information for data transmission is the scheduling information for downlink data transmission, the third reference signal and the scheduling information can belong to the same transmission structure, or the third reference signal and the scheduling information can also belong to different transmission structures, which is not limited. Optionally, in another possible implementation, when the scheduling information for data transmission is the scheduling information for uplink data transmission, the third reference signal and the scheduling information can belong to the same transmission structure, or the third reference signal and the scheduling information can also belong to different transmission structures.

[0204] The following describes the unique features of uplink data transmission that are different from downlink data transmission.

[0205] In a possible embodiment, when the scheduling information for data transmission is the scheduling information for uplink data transmission, before the terminal receives the third reference signal (i.e., step S801), the method further includes step S800 as shown in Figure 8 : The terminal sends a second trigger signal to the base station. Correspondingly, the base station receives the second trigger signal from the terminal. The second trigger signal is used to trigger the third reference signal (or it can be said that the second trigger signal is used to trigger the base station to send the third reference signal, or the second trigger signal is used to trigger the terminal to receive the third reference signal). It can be understood that triggering the base station to send the third reference signal through the second trigger signal can enable the terminal to quickly complete steps such as synchronization and channel measurement before uplink data transmission, which is beneficial to improving the data transmission efficiency. Among them, the second trigger signal being used to trigger the third reference signal can be understood in the following two ways:

[0206] First, the terminal can receive the third reference signal within the eighth time period after sending the second trigger signal (or it can be described that the base station can send the third reference signal within the eighth time period after receiving the second trigger signal). The length of the eighth time period can be predefined by the protocol, or it can also be pre-configured by the base station to the terminal. Optionally, the starting time domain position / starting time unit of the eighth time period can be the X8th time unit after the terminal sends / the base station receives the second trigger signal, where X8 is a positive integer. X8 can be predefined by the protocol, or it can be pre-configured by the base station to the terminal.

[0207] Second, the terminal can receive the third reference signal at the Hth time unit after sending the second trigger signal (or it can be described that the base station can send the third reference signal at the Hth time unit after receiving the second trigger signal, or it can be described that the starting time unit of the third reference signal is the Hth time unit after the end time unit of the second trigger signal, or it can be described that there is an interval of H time units between the starting time unit of the third reference signal and the end time unit of the second trigger signal). Among them, H is an integer greater than 0. H can be predefined by the protocol, or it can be pre-configured by the base station to the terminal. It should be understood that the starting time unit of the above third reference signal can be understood as the time unit where the starting time domain position of the transmission resource of the third reference signal is located, and the end time unit of the second trigger signal can be understood as the time unit where the end time domain position of the transmission resource of the second trigger signal is located.

[0208] Optionally, the second trigger signal can also be used for synchronization (or it can be described that the second trigger signal sent by the terminal is also used to trigger the base station to send synchronization information). Correspondingly, the third reference signal can be used for channel measurement and not for synchronization. That is to say, the second trigger signal can be used to trigger the third reference signal and for synchronization, and the third reference signal can be used to trigger the scheduling information for data transmission and for channel measurement.

[0209] It should be noted that when the second trigger signal is used for synchronization, the base station may also send the synchronization information corresponding to the second trigger signal to the terminal (or it can be described that the second trigger signal sent by the terminal is also used to trigger the base station to send synchronization information). Correspondingly, the terminal receives the synchronization information corresponding to the second trigger signal from the base station. It should be understood that the synchronization information usually needs to be informed to the terminal before demodulating the uplink data transmission information (i.e., uplink data), so that the terminal can complete time-frequency calibration before data transmission and improve the transmission performance.

[0210] Exemplarily, the synchronization information corresponding to the second trigger signal may be carried in the third reference signal (or it can be described that the third reference signal includes / carries the synchronization information corresponding to the second trigger signal), or the synchronization information corresponding to the second trigger signal may be carried in the scheduling information of the uplink data transmission (or it can be described that the scheduling information of the uplink data transmission includes / carries the synchronization information corresponding to the second trigger signal), or the synchronization information corresponding to the second trigger signal may be carried in the reference signal corresponding to the uplink data transmission. For example, the reference signal corresponding to the uplink data transmission may be DMRS.

[0211] The synchronization information in this application is information that can be used for terminal synchronization. In a possible way, the synchronization information may include at least one of timing offset or frequency offset. The terminal adjusts timing and frequency according to the synchronization information, so as to achieve synchronization.

[0212] In the embodiments of this application, by designing the downlink reference signal (i.e., the third reference signal), when there is a data transmission requirement in the energy-saving mode, the base station uses the third reference signal for fast synchronization and / or channel measurement, and at the same time, it is also used to trigger data transmission scheduling. In this way, fast data transmission in the energy-saving mode can be achieved through fewer transmission steps, which is beneficial to improving communication performance.

[0213] Next, the communication device provided in this application will be described in detail in conjunction with Figures 10 - 11 This application provides a communication device for detailed description.

[0214] It can be understood that in order to implement the functions in the above embodiments, the communication device includes the corresponding hardware structures and / or software modules for executing each function. Those skilled in the art should easily realize that, combining the units and method steps of each example described in the embodiments disclosed in this application, this application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed in the way of hardware or computer software driving hardware depends on the specific application scenario and design constraints of the technical solution.

[0215] Figure 10 and Figure 11The structural schematic diagram of a possible communication device provided by an embodiment of the present application. These communication devices can be used to implement the functions of the terminal or the radio access network device (such as a base station) 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 one of the terminals 120a - 120j shown in Figure 1 as shown, or it can be the RAN node 110a or 110b shown in Figure 1 as shown, or it can also be a module (such as a chip) applied to the terminal or the radio access network device.

[0216] Such as Figure 10 as shown, the communication device 1000 includes a processing unit 1010 and a transceiver unit 1020. The communication device 1000 is used to implement the functions of the terminal or the radio access network device in the method embodiments shown in Figure 5 、 Figure 8 above.

[0217] In one implementation, when the communication device 1000 is used to implement the function of the terminal in the method embodiment shown in Figure 5 as shown:

[0218] The transceiver unit 1020 is used to send a first reference signal, the first reference signal is used to trigger the scheduling information of data transmission, and the first reference signal is used for channel measurement and / or synchronization; the transceiver unit 1020 is used to receive the scheduling information.

[0219] The processing unit 1010 is used to process the received signal / information.

[0220] When the communication device 1000 is used to implement the function of the radio access network device in the method embodiment shown in Figure 5 as shown:

[0221] The transceiver unit 1020 is used to receive a first reference signal, the first reference signal is used to trigger the scheduling information of data transmission, and the first reference signal is used for channel measurement and / or synchronization; the transceiver unit 1020 is used to send the scheduling information.

[0222] The processing unit 1010 is used to process the received signal / information.

[0223] In another implementation, when the communication device 1000 is used to implement the function of the terminal in the method embodiment shown in Figure 8 as shown:

[0224] The transceiver unit 1020 is used to receive a third reference signal, the third reference signal is used to trigger the scheduling information of data transmission, and the third reference signal is used for channel measurement and / or synchronization; the transceiver unit 1020 is used to receive the scheduling information.

[0225] The processing unit 1010 is configured to process received signals / information.

[0226] When the communication device 1000 is used to implement Figure 6 the functions of the radio access network device in the method embodiments shown:

[0227] The transceiver unit 1020 is configured to send a third reference signal, where the third reference signal is used to trigger scheduling information for data transmission, and the third reference signal is used for channel measurement and / or synchronization; the transceiver unit 1020 is configured to send the scheduling information.

[0228] The processing unit 1010 is configured to process received signals / information.

[0229] For a more detailed description of the above processing unit 1010 and transceiver unit 1020, reference may be made to Figure 5 or Figure 8 the relevant descriptions in the method embodiments shown.

[0230] As Figure 11 shown, the communication device 1100 includes a processor 1110 and an interface circuit 1120. The processor 1110 and the interface circuit 1120 are coupled to each other. It can be understood that the interface circuit 1120 can be a transceiver or an input / output interface. Optionally, the communication device 1100 may further include a memory 1130, which is configured to store instructions executed by the processor 1110 or store input data required for the processor 1110 to run the instructions or store data generated after the processor 1110 runs the instructions.

[0231] When the communication device 1100 is used to implement Figure 5 , Figure 8 the method shown, the processor 1110 is configured to implement the functions of the above processing unit 1010, and the interface circuit 1120 is configured to implement the functions of the above transceiver unit 1020.

[0232] When the above communication device is a chip applied to a terminal, the terminal chip implements the functions of the terminal in the above method embodiments. The terminal chip receives, through other modules in the terminal (such as a radio frequency module or an antenna), signals sent by the radio access network device to the terminal; or, the terminal chip sends information to other modules in the terminal (such as a radio frequency module or an antenna), where the information is sent by the terminal to the radio access network device.

[0233] When the above communication device is a module applied to a radio access network device, the radio access network device module implements the functions of the radio access network device in the above method embodiments. The radio access network device module receives information from other modules (such as a radio frequency module or an antenna) in the radio access network device, and the information is sent by a terminal to the radio access network device; or, the radio access network device module sends information to other modules (such as a radio frequency module or an antenna) in the radio access network device, and the information is sent by the radio access network device to the terminal. The radio access network device module here can be a baseband chip of the radio access network device, or a CU, a DU or other modules, or a device under an open radio access network (O-RAN) architecture, such as an open CU, an open DU and other devices.

[0234] It can be understood that the processor in the embodiments of the present application can be a central processing unit (CPU), and can also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. The general-purpose processor can be a microprocessor or any conventional processor.

[0235] The method steps in the embodiments of the present application can be implemented in hardware or in software instructions executable by a processor. The software instructions can be composed of corresponding software modules, and the software modules can be stored in a random access memory, a flash memory, a read-only memory, a programmable read-only memory, an erasable programmable read-only memory, an electrically erasable programmable read-only memory, a register, a hard disk, a removable hard disk, a CD-ROM or any other form of storage medium well 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 a radio access network device or a terminal. The processor and the storage medium can also exist as discrete components in a radio access network device or a terminal.

[0236] 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 the form of a computer program product in whole or in part. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are 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 devices. The computer program or instructions can 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 instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center in a wired or wireless manner. The computer-readable storage medium can 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 can be a magnetic medium, such as a floppy disk, a hard disk, or a magnetic tape; it can also be an optical medium, such as a digital video disc; or it can be a semiconductor medium, such as a solid-state drive. The computer-readable storage medium can be a volatile or non-volatile storage medium, or can include both volatile and non-volatile types of storage media.

[0237] In various embodiments of the present application, if there is no special description and logical conflict, the terms and / or descriptions between different embodiments are consistent and can be cross-referenced. The technical features in different embodiments can be combined to form new embodiments according to their internal logical relationships.

[0238] It can be understood that the various numerical numbers involved in the embodiments of the present application are only for the convenience of description and do not limit the scope of the embodiments of the present application. The magnitudes of the serial numbers of the above processes do not mean the order of execution. The order of execution of each process should be determined by its function and internal logic.

Claims

1. A communication method, characterized in that, It includes: Send a first reference signal, where the first reference signal is used to trigger scheduling information for data transmission, and the first reference signal is used for channel measurement and / or synchronization; Receive the scheduling information.

2. The method according to claim 1, wherein The receiving the scheduling information includes: Receive the scheduling information within a first time period after sending the first reference signal; or, Receive the scheduling information at the A-th time unit after sending the first reference signal, where A is an integer greater than 0.

3. The method according to claim 1 or 2, characterized in that, The data transmission is downlink data transmission; Before sending the first reference signal, the method further includes: Receive a first trigger signal, where the first trigger signal is used to trigger the first reference signal.

4. The method according to claim 3, wherein The sending the first reference signal includes: Send the first reference signal within a second time period after receiving the first trigger signal; or, Send the first reference signal at the B-th time unit after receiving the first trigger signal, where B is an integer greater than 0.

5. The method according to claim 3 or 4, characterized in that, The first trigger signal is used for synchronization, and the first reference signal is used for channel measurement.

6. The method according to any one of claims 3-5, characterized in that After sending the first reference signal, the method further includes: Receive a second reference signal, where the second reference signal is used for interference measurement; Send interference measurement information according to the second reference signal.

7. The method according to claim 6, wherein The receiving the second reference signal includes: Receive the second reference signal within a third time period after sending the first reference signal; or, Receive the second reference signal at the C-th time unit after sending the first reference signal, where C is an integer greater than 0.

8. The method according to claim 6 or 7, characterized in that, The receiving the scheduling information includes: Receive the scheduling information within a fourth time period after sending the interference measurement information; or, The start time unit of the scheduling information is the D-th time unit after the end time unit of the interference measurement information, where D is an integer greater than 0.

9. The method according to any one of claims 1-8, characterized in that, The scheduling information further includes synchronization information corresponding to the first reference signal.

10. The method according to any one of claims 1-9, characterized in that, The first reference signal is used for synchronization, and the first reference signal includes multiple reference signals; the frequency-domain positions of the transmission resources of the multiple reference signals are the same, and there is an interval in the time-domain positions of the transmission resources of the multiple reference signals.

11. A communication method, characterized in that, It includes: Receive a first reference signal, where the first reference signal is used to trigger scheduling information for data transmission, and the first reference signal is used for channel measurement and / or synchronization; Send the scheduling information.

12. The method according to claim 11, wherein The sending the scheduling information includes: Send the scheduling information within a first time period after receiving the first reference signal; or, Send the scheduling information at the A-th time unit after receiving the first reference signal, where A is an integer greater than 0.

13. The method according to claim 11 or 12, characterized in that, The data transmission is downlink data transmission; Before receiving the first reference signal, the method further includes: Send a first trigger signal, where the first trigger signal is used to trigger the first reference signal.

14. The method according to claim 13, wherein The receiving the first reference signal includes: Receive the first reference signal within a second time period after sending the first trigger signal; or, Receive the first reference signal at the B-th time unit after sending the first trigger signal, where B is an integer greater than 0.

15. The method according to claim 13 or 14, characterized in that, The first trigger signal is used for synchronization, and the first reference signal is used for channel measurement.

16. The method according to any one of claims 13-15, characterized in that, After receiving the first reference signal, the method further includes: Transmitting a second reference signal, where the second reference signal is used for interference measurement; Receiving interference measurement information.

17. The method according to claim 16, wherein, The transmitting of the second reference signal includes: Transmitting the second reference signal within a third time period after receiving the first reference signal; or, Transmitting the second reference signal at the C-th time unit after receiving the first reference signal, where C is an integer greater than 0.

18. The method according to claim 16 or 17, characterized in that, The transmitting of the scheduling information includes: Transmitting the scheduling information within a fourth time period after receiving the interference measurement information; or, The starting time unit of the scheduling information is the D-th time unit after the ending time unit of the interference measurement information, where D is an integer greater than 0.

19. The method according to any one of claims 11-18, characterized in that, The scheduling information further includes synchronization information corresponding to the first reference signal.

20. The method according to any one of claims 11-19, characterized in that, The first reference signal is used for synchronization, and the first reference signal includes multiple reference signals; the periods and frequency domain positions of the transmission resources corresponding to the multiple reference signals are the same, and there are intervals in the time domain positions of the transmission resources of the multiple reference signals.

21. A communication device, characterized in that, It includes a unit or module for executing the method according to any one of claims 1-10, or includes a unit or module for executing the method according to any one of claims 11-20.

22. A communication device, characterized in that, It includes a processor and an interface circuit. The interface circuit is used to receive signals from other communication devices outside the communication device and transmit them to the processor or send signals from the processor to other communication devices outside the communication device. The processor uses logic circuits or executes code instructions to implement the method according to any one of claims 1-10, or to implement the method according to any one of claims 11-20.

23. A computer-readable storage medium, characterized in that, A computer program or instruction is stored in the storage medium. When the computer program or instruction is executed by the communication device, it implements the method according to any one of claims 1-10, or implements the method according to any one of claims 11-20.

24. A computer program product, characterized in that, It includes computer program code. When the computer program code runs on a computer, it implements the method according to any one of claims 1-10, or implements the method according to any one of claims 11-20.

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