WO2024061014A1 - Communication method and apparatus - Google Patents

Abstract

A communication method and apparatus, which are used for improving the downlink experience of a user. The method comprises: a network device determining to send a first message in a first slot, and determining to send downlink data to a terminal device in the first slot, wherein the first message is borne on a first beam, and the downlink data is borne on a second beam; and then, when the network device determines that the first beam and the second beam are different, sending the first message on a first frequency-domain resource of the first slot, and sending the downlink data to the terminal device on a second frequency-domain resource of the first slot, wherein the second frequency-domain resource wholly or partially overlaps the first frequency-domain resource, the second frequency-domain resource corresponds to the second beam, and the first frequency-domain resource corresponds to the first beam. Compared with the prior art in which the transmission of other data is not allowed in a frequency-domain range of a first message, the method of the present application can increase frequency-domain resources of downlink data, such that the downlink experience of the user can be improved.

Description

A communication method and device

Cross-references to related applications

This application claims priority to the Chinese patent application filed with the China Patent Office on September 21, 2022, with the application number 202211153726.X and the application title "A communication method and device", the entire content of which is incorporated into this application by reference. middle.

Technical field

The present application relates to the field of communication technology, and in particular, to a communication method and device.

Background technique

Currently, in time division duplex (TDD) systems, some information or messages, such as minimum remaining system information (RMSI), have a low transmission code rate and low spectrum efficiency, making it difficult to use for transmission These information or messages have relatively many resource blocks (RBs), so there are relatively few RBs used for downlink data transmission, which may lead to poor user downlink experience.

Contents of the invention

This application provides a communication method and device to improve user downlink experience.

In the first aspect, this application provides a communication method, which can be applied to network equipment, a functional module in the network equipment, a processor or chip in the network equipment, etc. The method may include: the network device determines to send the first message carried in the first beam in the first time slot, and determines to send downlink data to the terminal device in the first time slot, the downlink data being carried in the second beam; Furthermore, the network device determines that the first beam and the second beam are different, then sends the first message on the first frequency domain resource of the first time slot, and sends the first message on the first frequency domain resource of the first time slot. Send the downlink data to the terminal device on a second frequency domain resource; wherein the second frequency domain resource fully or partially overlaps the first frequency domain resource, and the second frequency domain resource overlaps with the first frequency domain resource. The second beam corresponds to the first frequency domain resource and the first beam.

Through the above method, the network device sends the first message and the downlink data of the terminal device respectively through partially or fully overlapping frequency domain resources corresponding to different beams. Compared with the prior art, the transmission of other data is not allowed within the frequency domain range of the first message. , the method of this application can increase the frequency domain resources of downlink data, thereby improving user downlink experience.

In a possible design, the network device determines that the first beam and the second beam are different. The method may be: the network device may determine the distance between the first beam and the second beam. greater than the first threshold. In this way, when the network device determines that the first beam and the second beam meet the spatial separation isolation, it subsequently sends the first message and the downlink data of the terminal device through partially or fully overlapping frequency domain resources corresponding to different beams.

In a possible design, the first message may include one or more of the following: minimum remaining system information (RMSI), open systems interconnection (OSI), paging message , Random access response (random access response, RAR) or message 4 during the random access process.

In a possible design, when the first message includes the paging message and/or the RAR, the network device further performs one or more of the following operations: the network device may send a first modulation The first message of a coding scheme (modulation and coding scheme, MCS) order, the first MCS order is related to the number of bits of the first message; or, the network device may send to the terminal device First downlink control information (DCI), the first DCI may include a transport block scaling field, and the value of the transport block scaling field may be greater than 0 and less than 1; or, the network device may Send a second DCI to the terminal device, the second DCI including a first field, the first field is used to indicate a virtual resource block (virtual resource block, VRB) to a physical resource block (physical resource block, PRB) mapping. This improves coverage performance.

In a possible design, when the first message includes the RMSI or the OSI, the network device may also perform one or more of the following operations: the network device may send a second MCS order In the first message, the second MCS order is related to the number of bits in the first message; or, the network device may send a third DCI to the terminal device, and the third DCI may include a third DCI. Two fields, the second field is used to indicate the mapping from VRB to PRB; the network device may send a fourth DCI to the terminal device, and the fourth DCI may include a redundancy version field. This improves coverage performance.

In a possible design, when the first message includes the message 4, the network device may also perform one or more of the following operations: the first message of the third MCS order of the network device , the third MCS order is related to the number of bits of the first message; or, the network device may send a fifth DCI to the terminal device, the fifth DCI includes a third field, and the fifth DCI Three fields are used to indicate the mapping from VRB to PRB; alternatively, the network device may send a sixth DCI to the terminal device, and the third DCI may include a redundancy version field; the network device may add a redundancy version field for the third DCI. The maximum number of hybrid automatic repeat request (HARQ) transmissions of a message. This improves coverage performance.

In the second aspect, this application provides a communication method, which can be applied to a terminal device, a functional module in the terminal device, a processor or chip in the terminal device, etc. The method may include: the terminal device may receive a first DCI from the network device, the first DCI may include a transport block scaling field, the value of the transport block scaling field is greater than 0 and less than 1; and/or, the terminal The device may receive a second DCI from the network device, the second DCI including a first field indicating a VRB to PRB mapping. This improves coverage performance.

In a third aspect, this application also provides a communication device, which may be a network device. The communication device has the functions of implementing the above-mentioned first aspect or each possible design example of the first aspect. The functions described can be implemented by hardware, or can be implemented by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions.

In one possible design, the structure of the communication device includes a transceiver unit and a processing unit. These units can perform the corresponding functions in the above-mentioned first aspect or each possible design example of the first aspect. For details, see the method examples. Detailed description will not be repeated here.

In a possible design, the structure of the communication device includes a transceiver and a processor, and optionally a memory. The transceiver is used to send and receive signals or data, and to communicate with other devices in the communication system. Interactively, the processor is configured to support the communication device to perform corresponding functions in the above-mentioned first aspect or each possible design example of the first aspect. The memory is coupled to the processor and holds program instructions and data necessary for the communications device.

In a fourth aspect, the present application also provides a communication device, which may be a terminal device. The communication device has the function of implementing the method in the above-mentioned second aspect or each possible design example of the second aspect. The functions described can be implemented by hardware, or can be implemented by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions.

In one possible design, the structure of the communication device includes a transceiver unit and a processing unit. These units can perform the corresponding functions in the above second aspect or each possible design example of the second aspect. For details, see the method examples. Detailed description will not be repeated here.

In a possible design, the structure of the communication device includes a transceiver and a processor, and optionally a memory. The transceiver is used to send and receive signals or data, and to communicate with other devices in the communication system. Interactively, the processor is configured to support the communication device to perform corresponding functions in the above second aspect or each possible design example of the second aspect. The memory is coupled to the processor and holds program instructions and data necessary for the communications device.

In a fifth aspect, embodiments of the present application provide a communication system. The communication system may include a network device. The network device may be used to perform the operations performed by the network device in any of the above first aspects and methods of the first aspect. wait.

In a possible design, the communication system may also include a terminal device, and the terminal device may be used to perform operations performed by the terminal device in the above second aspect, and the like.

In a sixth aspect, embodiments of the present application provide a computer-readable storage medium. The computer-readable storage medium stores program instructions. When the program instructions are run on a computer, they cause the computer to execute the first aspect of the embodiments of the application and its contents. either of the possible designs, or the method described in the second aspect. By way of example, computer-readable storage media can be any available media that can be accessed by a computer. Taking this as an example but not limited to: computer-readable media may include non-transitory computer-readable media, random-access memory (random-access memory, RAM), read-only memory (read-only memory, ROM), electrically erasable memory In addition to programmable read-only memory (electrically EPROM, EEPROM), CD-ROM or other optical disk storage, magnetic disk storage media or other magnetic storage devices, or can be used to carry or store the desired program code in the form of instructions or data structures and can Any other media accessed by a computer.

In a seventh aspect, embodiments of the present application provide a computer program product that includes computer program code or instructions. When the computer program code or instructions are run on a computer, the first aspect or any of the possible designs of the first aspect are enabled. , or the method described in the second aspect above is executed.

In an eighth aspect, the present application also provides a chip, including a processor, the processor being coupled to a memory and configured to read and execute program instructions stored in the memory, so that the chip implements the above-mentioned first aspect Or any possible design of the first aspect, or the method described in the second aspect above.

For each aspect from the above third to eighth aspects and the technical effects that may be achieved by each aspect, please refer to the above for the first aspect or the various possible solutions in the first aspect, or the technical effects that can be achieved by the solution in the above second aspect. Note, I won’t repeat it here.

Description of drawings

Figure 1 is a schematic diagram of the architecture of a communication system provided by this application;

FIG2 is a schematic diagram showing a comparison between a communication method provided by the present application and a method in the prior art;

Figure 3 is a flow chart of a communication method provided by this application;

Figure 4 is a schematic structural diagram of a communication device provided by this application;

Figure 5 is a structural diagram of a communication device provided by this application.

Detailed ways

The present application will be described in further detail below with reference to the accompanying drawings.

Embodiments of the present application provide a communication method and device to improve user downlink experience. Among them, the method and the device described in this application are based on the same technical concept. Since the principles of solving problems by the method and the device are similar, the implementation of the device and the method can be referred to each other, and repeated details will not be repeated.

For ease of understanding, some technical terms involved in the embodiments of this application are first explained below:

1) Beam: A beam refers to a special directional sending or receiving effect formed by a transmitter or receiver of network equipment or terminal equipment through an antenna array, just like a flashlight that converges light in one direction to form a beam. Transmitting and receiving signals in the form of beams can effectively increase the signal transmission distance.

The beam can be a wide beam, a narrow beam, or other types of beams. The beam forming technology may be beam forming technology or other technologies. Specifically, the beamforming technology can be digital beamforming technology, analog beamforming technology, or hybrid digital/analog beamforming technology.

In communication protocols, beams can be specifically characterized as digital beams, analog beams, spatial domain filters, spatial filters, spatial parameters, TCI, TCI-state, etc. The beam used to transmit signals can be called a transmission beam (transmission beam, or Tx beam), a spatial domain transmission filter (spatial domain transmission filter), a spatial transmission filter (spatial transmission filter), and a spatial domain transmission parameter (spatial domain transmission parameter). , spatial transmission parameters, etc. The beam used to receive the signal can be called the reception beam (reception beam, or Rx beam), spatial domain reception filter (spatial domain reception filter), spatial reception filter (spatial reception filter), spatial domain reception parameter (spatial domain reception parameter) , spatial reception parameter (spatial reception parameter), etc. It should be understood that the beam in this application can be replaced by other equivalent concepts and is not limited to the above-mentioned concepts.

2) System message: System cells are broadcast through system messages. System information groups similar system cells together.

3) Frequency division multiplexing: A method of transmitting multiple independent signals on a medium, with each signal assigned a unique carrier frequency. The hardware responsible for signal combination is called a multiplexer, and the hardware responsible for signal separation is called a demultiplexer.

4) In the description of this application, words such as "first" and "second" are only used for the purpose of distinguishing descriptions, and cannot be understood as indicating or implying relative importance, nor as indicating or implying order.

In the description of this application, "at least one" means one or more, and more means two or more. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single 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 plural.

"And/or" in the description of this application describes the relationship between associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, and B exists alone. situation, where A and B can be singular or plural. "/" means "or", for example, a/b means a or b.

In order to describe the technical solutions of the embodiments of the present application more clearly, the communication method and device provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

The communication method provided by this application can be applied to various communication systems, such as long term evolution (LTE) systems, time division duplex (TDD) systems (such as low-frequency TDD systems, high-frequency TDD systems) , frequency division duplex (frequency division duplex (FDD) system, universal mobile telecommunication system (UMTS), global interoperability for microwave access (WiMAX) communication system, fifth generation (5th generation, 5G) communication system, and Future sixth generation (6G) communication systems, etc.

By way of example, FIG. 1 shows the architecture of a possible communication system to which the communication method provided by this application is applicable. The architecture of the communication system includes at least one network device and at least one terminal device.

Terminal equipment is also called user equipment (UE), mobile station (MS), mobile terminal (MT), etc. An end device is a device that includes wireless communication capabilities (providing voice/data connectivity to the user). For example, handheld devices with wireless connection functions, or vehicle-mounted devices. At present, some examples of terminal devices can be: mobile phones, satellite phones, cellular phones, tablet computers, notebook computers, handheld computers, mobile internet devices (mobile internet devices, MID), customer-premises equipment (customer-premises equipment) , CPE), smart point of sale (POS) machines, wearable devices, drones, communication equipment carried on high-altitude aircraft, virtual reality (VR) equipment, augmented reality (AR) Equipment, wireless terminals in industrial control, wireless terminals in vehicle-to-everything (V2X), wireless terminals in self-driving, remote medical surgery Wireless terminals, wireless terminals in smart grid, wireless terminals in transportation safety, wireless terminals in smart city, or wireless terminals in smart home, or 5G Terminals for later evolved communication systems, etc. For example, wireless terminals in the Internet of Vehicles can be vehicle-mounted equipment, vehicle equipment, vehicle-mounted modules, vehicles, etc. Wireless terminals in industrial control can be cameras, robots, etc. Wireless terminals in smart homes can be TVs, air conditioners, sweepers, speakers, set-top boxes, etc. In this application, terminals with wireless transceiver functions and chips or modules that can be installed on the aforementioned terminals are collectively referred to as terminal equipment.

The network device may be a device deployed in a wireless access network to provide wireless communication functions for terminal devices. For example, the network device may be a radio access network (RAN) node that connects the terminal device to the wireless network, and may also be called an access network device. The network equipment in the embodiment of this application may be an evolved Node B (eNB) in the 4G system, a next generation base station (next generation NodeB, gNB) in the 5G system, or a 6G system. The base station, or the base station in other systems evolved after 5G, can also be access network equipment or modules of access network equipment in the open access network (open RAN, ORAN) system. Specifically, the network equipment may include but is not limited to: home base station (for example, home evolved NodeB, or home Node B, HNB), baseband unit (baseband unit, BBU), wireless relay node, wireless backhaul node, transmission point ( transmission point (TP) or transmission reception point (TRP); or, one or a group (including multiple antenna panels) of antenna panels of a base station in a 5G mobile communication system. Alternatively, the network device may also be a module or unit that can implement some functions of the access network device. For example, the access network equipment can be a centralized unit (CU), a distributed unit (DU), CU-control plane (CP), CU-user plane (UP), Or wireless unit (radio unit, RU), etc. Among them, in the ORAN system, CU can also be called O-CU, DU can also be called open (open, O)-DU, CU-CP can also be called O-CU-CP, and CU-UP can also be called O-CUP-UP, RU can also be called O-RU.

It should be noted that FIG. 1 only illustrates one network device and one terminal device, and is not intended to limit the number and type of devices in the communication system of the present application. It should be understood that the communication system may also include more or less devices, and this application will not show them one by one.

At present, system information, such as RMSI and open systems interconnection information (OSI), usually uses single user (SU) scheduling, and frequency division multiplexing (FDM) with other bearers or services in the cell, resulting in large RB overhead, that is, within the frequency domain range of its scheduling, other control messages or downlink service data transmission are not allowed to use the frequency domain RB range of its scheduling. In addition, some other information or messages, such as paging messages, random access response (RAR), and message 4 (msg4) in the random access process, also use SU scheduling. Within the frequency domain range of its scheduling, other control messages or downlink service data transmission are not allowed to use the frequency domain RB range of the above message scheduling. The transmission code rate of the above information or messages is low, and the spectrum efficiency is low, so that the RBs used to transmit these information or messages are relatively more, and the RBs used for downlink data transmission are relatively less, which may lead to poor downlink user experience.

Based on this, the embodiment of the present application proposes a communication method to reduce the overhead occupied by the above information or messages, and proposes space division solutions such as RMSI, OSI, Paging, RAR or msg4 to allow network devices to schedule the above information or messages. The frequency domain can be paired with other users for multi-user (MU), increasing the number of RBs that can be allocated for user downlink business data transmission, thereby improving user downlink experience.

For example, taking RMSI as an example, as shown in Figure 2, through the existing technology method, the transmission of RMSI and the transmission of downlink data of the UE adopt frequency division multiplexing. Through the communication method proposed in this application, the transmission of RMSI and The UE's downlink data is sent using a space division scheme. As can be seen from Figure 2, compared with the existing technology, the method of this application can increase the frequency domain resources of downlink data, thereby improving User downstream experience. It should be understood that the spatial division method in which the frequency domain resources of the UE include the frequency domain resources of the RMSI shown in the method of the present application in Figure 2 is only an example. Optionally, the frequency domain resources of the UE can be combined with the frequency domain resources of the RMSI. The resources overlap partially or completely, and this application does not limit this.

In the following embodiments, the communication method provided by this application is described in detail by taking network equipment and terminal equipment as examples. It should be understood that the operations performed by the network equipment can also be performed by a processor in the network equipment, or a chip or chip system, or It is implemented by a functional module, etc., and the operations performed by the terminal device can also be implemented by a processor in the terminal device, or a chip or chip system, or a functional module, etc. This application is not limited to this.

Based on the above description, the embodiment of the present application provides a communication method, as shown in Figure 3. The process of the method may include:

Step 301: The network device determines to send the first message in the first time slot, and the first message is carried in the first beam.

Exemplarily, the first message may include, but is not limited to, one or more of the following: RMSI, OSI, paging message, RAR or msg4, etc. In the description of this application, RMSI, OSI, paging message, RAR, or msg4 are only used as examples, which are not intended to limit the embodiments of this application.

For example, the first message may include RMSI or OSI.

For another example, the first message may include RMSI or OSI, and a paging message.

For another example, the first message may be RAR and/or msg4, and one or more of RMSI, OSI, and paging message, wherein RMSI and OSI are not included in the first message at the same time.

Of course, the above examples are only examples, and the first message can also have many other possibilities, and the above examples are not intended to limit the present application.

The first time slot may be a time domain unit, such as a time slot, such as a downlink time slot.

Optionally, the network device may send the first message on multiple beams in multiple time slots. Here, only sending the first message on the first beam of the first time slot is used as an example. The first time slot may be multiple In any time slot in the time slot, the first message is sent on the beam of other time slots in the same way and can refer to each other.

Step 302: The network device determines to send downlink data to the terminal device in the first time slot, and the downlink data is carried in the second beam.

Specifically, the network device determines whether there is any terminal device with downlink data to be scheduled in the first time slot, and needs to perform downlink scheduling for the terminal device, that is, determines whether downlink data is to be sent to at least one terminal device in the first time slot. When the network device determines that downlink data is to be sent to at least one terminal device in the first time slot, executes the following step 303.

Optionally, when the network device determines whether any terminal device has downlink data to be scheduled, that is, when determining whether downlink scheduling is required for the terminal device, it can determine whether any terminal device has data from the radio link control (RLC) layer.

Step 303: The network device determines that the first beam and the second beam are different.

Wherein, if the network device determines that the first beam and the second beam are not in the same direction, or if the network device determines that there is a distance between the first beam and the second beam, then the network device determines that the first beam and the second beam are not in the same direction. The device determines that the first beam and the second beam are different.

In an optional implementation manner, the network device determines that the first beam and the second beam are different, and may determine that the distance between the first beam and the second beam is greater than a first threshold.

In a possible way, the network device may determine whether the distance between the first beam and the second beam is greater than a first threshold, which may also be understood as the network device determines whether the distance between the first beam and the second beam is greater than a first threshold. Whether it meets the isolation degree of space division, that is, the first threshold can be understood as the isolation threshold of space division. When it is determined that it is greater than the first threshold (that is, greater than the isolation threshold of space division), it is determined that the first beam and The isolation between the second beams complies with spatial separation.

For example, the first threshold may be greater than or equal to 1 Euclidean distance unit. For example, when the distance between the first beam and the second beam is 1 Euclidean distance unit, the first beam and the second beam may be adjacent beams, and two beams being adjacent may mean The first beam and the second beam are different. For another example, when the distance between the first beam and the second beam is greater than 1 Euclidean distance unit, the first beam and the second beam are non-adjacent beams, and the two beams are not adjacent. Indicates that the first beam and the second beam are different.

It should be understood that the above example of the first threshold is not intended to limit the present application. The first threshold can also be implemented in a variety of other ways, which is not limited by this application.

Step 304a: The network device sends the first message on the first frequency domain resource of the first time slot.

Step 304b: The network device sends the downlink data to the terminal device on the second frequency domain resource of the first time slot; wherein the second frequency domain resource and the first frequency domain resource all Or partially overlap, the second frequency domain resource corresponds to the second beam, and the first frequency domain resource corresponds to the first beam.

The order of step 304a and step 304b is not limited. For example, step 304a may come first and step 304b follows; step 304b may come first and step 304a follows; or step 304a and step 304b may be implemented at the same time, which is not limited by this application.

For example, if the network device determines that the first beam and the second beam are different, the network device allocates the second frequency domain resource corresponding to the second beam to the downlink data of the terminal device to achieve spatial division.

The network device allocates the second frequency domain resource to the downlink data of the terminal device. The network device may allocate the physical downlink shared channel (PDSCH) frequency in the second beam direction of the terminal device to the terminal device. domain resources.

Optionally, when the network device allocates PDSCH frequency domain resources to the downlink data of the terminal device, it may not consider whether the PDSCH frequency domain resources overlap with the first message.

In an optional implementation, the second frequency domain resource and the first frequency domain resource overlap in whole or in part. The second frequency domain resource may include the first frequency domain resource, or the second frequency domain resource may include the first frequency domain resource. The second frequency domain resource overlaps with the first frequency domain resource.

Optionally, when the second frequency domain resource includes the first frequency domain resource, the second frequency domain resource may be equal to or more than the first frequency domain resource.

Through the above method, the network device sends the first message and the downlink data of the terminal device respectively through partially or fully overlapping frequency domain resources corresponding to different beams. Compared with the prior art, the transmission of other data is not allowed within the frequency domain range of the first message. , the method of this application can increase the frequency domain resources of downlink data, thereby improving user downlink experience.

Further, in a coverage-limited scenario, it may be considered to improve the coverage performance of the first message. For example, different implementation forms of the first message can be implemented through the following different methods:

In a first possible example, when the first message includes the paging message and/or the RAR, the network device may also perform one or more of the following operations:

Operation a1: The network device sends the first message of a first modulation and coding scheme (MCS) order, where the first MCS order is related to the number of bits of the first message.

The first MCS order related to the number of bits of the paging message and/or the RAR is relatively low, so that the coverage performance can be improved by sending the paging message and/or RAR using a low-order MCS.

Operation a2: The network device sends first downlink control information (DCI) to the terminal device. The first DCI includes a transport block scaling field (transport block scaling, TB scaling). The value of the block scaling field is greater than 0 and less than 1.

Through the above operation a2, the code rate can be reduced and the coverage performance can be improved.

Optionally, the first DCI may be DCI in format 0-1.

Operation a3: The network device sends a second DCI to the terminal device. The second DCI may include a first field, and the first field may be used to indicate a virtual resource block (VRB) to a physical resource. Block (physical resource block, PRB) mapping.

For example, the first field may be a VRB to PRB mapping field, or may be another name, which is not limited in this application.

Optionally, the second DCI may be DCI in format 0-1.

In one possible way, the second DCI and the first DCI in operation a2 may be the same.

Through the above operation a3, interference can be reduced, the transmission reliability of the first message can be improved, and the coverage performance can be improved.

In a second possible example, when the first message includes the RMSI or the OSI, the network device may also perform one or more of the following operations:

Operation b1: The network device sends the first message of a second MCS order, where the second MCS order is related to the number of bits of the first message.

Wherein, the second MCS order related to the bit number of the RMSI or the OSI is relatively low, so that the coverage performance can be improved by using the low-order MCS to send the RMSI or OSI.

Operation b2: The network device sends a third DCI to the terminal device, where the third DCI may include a second field, where the second field is used to indicate mapping from VRB to PRB.

For example, the second field may be a VRB to PRB mapping field, or may be another name, which is not limited in this application.

Optionally, the third DCI may be DCI in format 0-1.

Through the above operation b2, interference can be reduced, the transmission reliability of the first message can be improved, and the coverage performance can be improved.

Operation b3: The network device sends a fourth DCI to the terminal device, where the fourth DCI may include a redundancy version field.

Optionally, the fourth DCI may be DCI in format 0-1.

In one possible way, the fourth DCI and the third DCI in operation b2 may be the same.

Through the above operation b3, the demodulation performance of the terminal device can be improved and the coverage performance can be improved.

In a third possible example, when the first message includes the msg4, the network device may also perform one or more of the following operations:

Operation c1: The network device sends the first message of a third MCS order, where the third MCS order is related to the number of bits of the first message.

Among them, the third MCS order related to the bit number of msg4 is relatively low, so the coverage performance can be improved by using the low-order MCS to send msg4.

Operation c2: The network device sends a fifth DCI to the terminal device, where the fifth DCI may include a third field, where the third field is used to indicate mapping from VRB to PRB.

Exemplarily, the third field may be a VRB to PRB mapping field, or may be other names, which is not limited in this application.

Optionally, the fifth DCI may be DCI in format 0-1.

Through the above operation c2, interference can be reduced, the transmission reliability of the first message can be improved, and the coverage performance can be improved.

Operation c3: The network device sends a sixth DCI to the terminal device, where the DCI includes a redundancy version (redundancy version) field.

Optionally, the sixth DCI may be DCI in format 0-1.

In one possible way, the sixth DCI and the fifth DCI in operation c2 may be the same.

Through the above operation c3, the demodulation performance of the terminal device can be improved and the coverage performance can be improved.

Operation c4: The network device increases the maximum number of hybrid automatic repeat request (HARQ) transmissions for the first message.

Through the above operation c4, the combining gain can be increased through multiple retransmissions of the first message, thereby improving channel transmission reliability and reducing the block error rate, thereby improving the demodulation performance of the terminal equipment, thereby improving the coverage performance.

It should be understood that the above methods for improving coverage performance are only examples. The coverage performance of the first message can also be improved through other methods, which will not be shown one by one in this application.

It should be noted that in the above description, only one terminal device is used as an example. It should be understood that the network device can determine that the beam of at least one terminal device is different from the first beam, and then the frequency in the beam direction of each terminal device is different. Domain resources send corresponding downlink data. Any terminal device can refer to the solutions described above using terminal devices, and this application will not describe them one by one.

Based on the above embodiments, embodiments of the present application also provide a communication device. Referring to FIG. 4 , the communication device 400 may include a transceiver unit 401 and a processing unit 402 . The transceiver unit 401 is used for the communication device 400 to receive signals (messages or data) or send information (messages or data), and the processing unit 402 is used to control and manage the actions of the communication device 400 . The processing unit 402 can also control the steps performed by the transceiver unit 401.

Exemplarily, the communication device 400 may be the network device in the above embodiment, a processor in the network device, or a chip, or a chip system, or a functional module, etc.; or, the communication device 400 may be specifically It is the terminal device in the above embodiment, the processor of the terminal device, or a chip, or a chip system, or a functional module, etc.

In one embodiment, when the communication device 400 is used to implement the functions of the network device in the embodiment described in Figure 3, it may include: the processing unit 402 may be used to determine to send the first message in the first time slot, so The first message is carried in a first beam; and, it is determined that downlink data is sent to the terminal device in the first time slot, and the downlink data is carried in a second beam; and, it is determined that the first beam and the second The beams are different; the transceiver unit 401 may be configured to send the third frequency domain resource on the first time slot when the processing unit 402 determines that the first beam and the second beam are different. a message, and sending the downlink data to the terminal device on the second frequency domain resource of the first time slot; wherein the second frequency domain resource fully or partially overlaps with the first frequency domain resource , the second frequency domain resource corresponds to the second beam, and the first frequency domain resource corresponds to the first beam.

Exemplarily, when determining that the first beam and the second beam are different, the processing unit 402 is specifically configured to: determine that the distance between the first beam and the second beam is greater than a first threshold.

Optionally, the first message may include one or more of the following: remaining minimum system information RMSI, open system interconnection information OSI, paging message, random access response RAR or message 4 in the random access process.

In an optional implementation, when the first message includes the paging message and/or the RAR, the transceiver unit 401 may also be configured to perform one or more of the following operations:

sending the first message of a first modulation coding scheme MCS order, the first MCS order being related to the number of bits of the first message; or

Send first downlink control information DCI to the terminal device, where the first DCI includes a transport block scaling field, and the value of the transport block scaling field is greater than 0 and less than 1; or

A second DCI is sent to the terminal device, where the second DCI includes a first field used to indicate a mapping of a virtual resource block VRB to a physical resource block PRB.

In another optional implementation, when the first message includes the RMSI or the OSI, the transceiver unit 401 may also be configured to perform one or more of the following operations:

sending the first message of a second modulation coding scheme MCS order, the second MCS order being related to the number of bits of the first message; or

Send third downlink control information DCI to the terminal device, where the third DCI includes a second field, the second field is used to indicate the mapping of the virtual resource block VRB to the physical resource block PRB; or

Send a fourth DCI to the terminal device, where the fourth DCI includes a redundancy version field.

In yet another optional implementation, when the first message includes the message 4, the transceiver unit 401 may also be configured to perform one or more of the following operations:

sending the first message of a third modulation coding scheme MCS order, the third MCS order being related to the number of bits of the first message; or

Sending fifth downlink control information DCI to the terminal device, where the fifth DCI includes a third field, and the third field is used to indicate mapping of virtual resource blocks VRB to physical resource blocks PRB; or

Send a sixth DCI to the terminal device, where the DCI includes a redundant version field; or

The processing unit 402 may also be configured to increase the maximum number of hybrid automatic repeat request HARQ transmissions for the first message.

In one embodiment, when the communication device 400 is used to implement the functions of the terminal device in the embodiment described in Figure 3, it may include: the transceiver unit 401 may be used to send and receive information; the processing unit 402 may use In controlling the transceiver unit to receive the first downlink control information DCI from the network device, the first DCI includes a transport block scaling field, and the value of the transport block scaling field is greater than 0 and less than 1; and/or, from the The network device receives a second DCI, where the second DCI includes a first field, and the first field is used to indicate a mapping of a virtual resource block VRB to a physical resource block PRB.

It should be noted that the division of units in the embodiment of the present application is schematic and is only a logical function division. In actual implementation, there may be other division methods. Each functional unit in the embodiment of the present application can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above integrated units can be implemented in the form of hardware or software functional units.

If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or contributes to the existing technology, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , including several instructions to cause a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the methods described in various embodiments of the application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk and other media that can store program code. .

Based on the above embodiments, embodiments of the present application also provide a communication device. Referring to FIG. 5 , the communication device 500 may include a transceiver 501 and a processor 502 . Optionally, the communication device 500 may also include a memory 503. The memory 503 may be disposed inside the communication device 500 or may be disposed outside the communication device 500 . Wherein, the processor 502 can control the transceiver 501 to receive and send information, messages or data, etc.

Specifically, the processor 502 may be a central processing unit (CPU), a network processor (NP), or a combination of CPU and NP. The processor 502 may further include hardware chips. The above-mentioned hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (programmable logic device), or an application-specific integrated circuit (ASIC). device, PLD) or a combination thereof. The above-mentioned PLD can be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a general array logic (GAL) or any combination thereof.

Wherein, the transceiver 501, the processor 502 and the memory 503 are connected to each other. Optionally, the transceiver 501, the processor 502 and the memory 503 are connected to each other through a bus 504; the bus 504 may be a Peripheral Component Interconnect (PCI) bus or an extended industry standard. Structure (Extended Industry Standard Architecture, EISA) bus, etc. The bus can be divided into address bus, data bus, control bus, etc. For ease of presentation, only one thick line is used in Figure 5, but it does not mean that there is only one bus or one type of bus.

In an optional implementation, the memory 503 is used to store programs, etc. Specifically, the program may include program code including computer operating instructions. The memory 503 may include RAM, and may also include non-volatile memory (non-volatile memory), such as one or more disk memories. The processor 502 executes the application program stored in the memory 503 to implement the above functions, thereby realizing the functions of the communication device 500 .

For example, the communication device 500 may be the network device in the above embodiment; it may also be the terminal device in the above embodiment.

In one embodiment, when the communication device 500 implements the functions of the network device in the embodiment shown in Figure 3, the transceiver 501 can implement the sending and receiving operations performed by the network device in the embodiment shown in Figure 3; processing The processor 502 may implement other operations other than the sending and receiving operations performed by the network device in the embodiment shown in FIG. 3 . For specific relevant descriptions, please refer to the relevant descriptions in the embodiment shown in FIG. 3 , and will not be introduced in detail here.

In one embodiment, when the communication device 500 implements the functions of the terminal device in the embodiment shown in Figure 3, the transceiver 501 can implement the sending and receiving operations performed by the terminal device in the embodiment shown in Figure 3; Processing The processor 502 may implement other operations other than the sending and receiving operations performed by the terminal device in the embodiment shown in FIG. 3 . For specific relevant descriptions, please refer to the relevant descriptions in the embodiment shown in FIG. 3 , and will not be introduced in detail here.

Based on the above embodiments, embodiments of the present application provide a communication system, which may include the terminal equipment and network equipment involved in the above embodiments.

Embodiments of the present application also provide a computer-readable storage medium. The computer-readable storage medium is used to store a computer program. When the computer program is executed by a computer, the computer can implement the communication method provided by the above method embodiment.

Embodiments of the present application also provide a computer program product. The computer program product is used to store a computer program. When the computer program is executed by a computer, the computer can implement the communication method provided by the above method embodiment.

An embodiment of the present application also provides a chip, including a processor, which is coupled to a memory and configured to call a program in the memory so that the chip implements the communication method provided by the above method embodiment.

An embodiment of the present application also provides a chip, which is coupled to a memory, and is used to implement the communication method provided by the above method embodiment.

Those skilled in the art will understand that embodiments of the present application may be provided as methods, systems, or computer program products. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment that combines software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to the present application. It will be understood that each process and/or block in the flowchart illustrations and/or block diagrams, and combinations of processes and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine, such that the instructions executed by the processor of the computer or other programmable data processing device produce a use A device for realizing the functions specified in one process or multiple processes of the flowchart and/or one block or multiple blocks of the block diagram.

These computer program instructions may also be stored in a computer-readable memory that causes a computer or other programmable data processing apparatus to operate in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction means, the instructions The device implements the functions specified in a process or processes of the flowchart and/or a block or blocks of the block diagram.

These computer program instructions may also be loaded onto a computer or other programmable data processing device, causing a series of operating steps to be performed on the computer or other programmable device to produce computer-implemented processing, thereby executing on the computer or other programmable device. Instructions provide steps for implementing the functions specified in a process or processes of a flowchart diagram and/or a block or blocks of a block diagram.

Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the scope of the present application. In this way, if this If these modifications and variations of the application fall within the scope of the claims of this application and its technical equivalents, this application is also intended to include these modifications and variations.

Claims (19)

A communication method, characterized by including: The network device determines to send the first message in the first time slot, and the first message is carried in the first beam; The network device determines to send downlink data to the terminal device in the first time slot, and the downlink data is carried in the second beam; The network device determines that the first beam and the second beam are different, then sends the first message on the first frequency domain resource of the first time slot, and sends the first message on the first frequency domain resource of the first time slot. Send the downlink data to the terminal device on the second frequency domain resource; Wherein, the second frequency domain resource fully or partially overlaps with the first frequency domain resource, the second frequency domain resource corresponds to the second beam, and the first frequency domain resource overlaps with the first beam. correspond. The method of claim 1, wherein the network device determines that the first beam and the second beam are different, including: The network device determines that a distance between the first beam and the second beam is greater than a first threshold. The method of claim 1 or 2, wherein the first message includes one or more of the following: remaining minimum system information RMSI, open system interconnection information OSI, paging message, random access response RAR Or message 4 during random access. The method of claim 3, wherein when the first message includes the paging message and/or the RAR, the method further includes: The network device performs one or more of the following operations: The network device sends the first message of a first modulation and coding scheme MCS order, where the first MCS order is related to the number of bits of the first message; or The network device sends first downlink control information DCI to the terminal device, the first DCI includes a transport block scaling field, and the value of the transport block scaling field is greater than 0 and less than 1; or The network device sends a second DCI to the terminal device, where the second DCI includes a first field, and the first field is used to indicate a mapping of a virtual resource block VRB to a physical resource block PRB. The method of claim 3, wherein when the first message includes the RMSI or the OSI, the method further includes: The network device performs one or more of the following operations: The network device sends the first message of a second modulation and coding scheme MCS order, where the second MCS order is related to the number of bits of the first message; or The network device sends third downlink control information DCI to the terminal device, where the third DCI includes a second field, and the second field is used to indicate the mapping of the virtual resource block VRB to the physical resource block PRB; or The network device sends a fourth DCI to the terminal device, where the fourth DCI includes a redundancy version field. The method of claim 3, wherein when the first message includes the message 4, the method further includes: The network device performs one or more of the following operations: The network device sends the first message of a third modulation and coding scheme MCS order, where the third MCS order is related to the number of bits of the first message; or The network device sends fifth downlink control information DCI to the terminal device, where the fifth DCI includes a third field, and the third field is used to indicate the mapping of the virtual resource block VRB to the physical resource block PRB; or The network device sends a sixth DCI to the terminal device, where the DCI includes a redundant version field; or The network device increases the maximum number of hybrid automatic repeat request HARQ transmissions for the first message. A communication method, characterized by including: The terminal device receives the first downlink control information DCI from the network device, the first DCI includes a transport block scaling field, and the value of the transport block scaling field is greater than 0 and less than 1; and / or The terminal device receives a second DCI from the network device, where the second DCI includes a first field used to indicate a mapping of a virtual resource block VRB to a physical resource block PRB. A communication device, characterized by including: a processing unit configured to determine to send the first message in the first time slot, the first message being carried in the first beam; and Determine to send downlink data to the terminal device in the first time slot, the downlink data being carried in the second beam; and determining that the first beam and the second beam are different; A transceiver unit configured to send the first message on the first frequency domain resource of the first time slot, and send the downlink message to the terminal device on the second frequency domain resource of the first time slot. data; Wherein, the second frequency domain resource fully or partially overlaps with the first frequency domain resource, the second frequency domain resource corresponds to the second beam, and the first frequency domain resource overlaps with the first beam. correspond. The device according to claim 8, wherein when the processing unit determines that the first beam and the second beam are different, it is specifically configured to: It is determined that a distance between the first beam and the second beam is greater than a first threshold. The device of claim 8 or 9, wherein the first message includes one or more of the following: remaining minimum system information RMSI, open system interconnection information OSI, paging message, random access response RAR Or message 4 during random access. The device of claim 10, wherein when the first message includes the paging message and/or the RAR, the transceiver unit is further configured to perform one or more of the following operations: sending the first message of a first modulation and coding scheme (MCS) order, wherein the first MCS order is related to the number of bits of the first message; or Send first downlink control information DCI to the terminal device, where the first DCI includes a transport block scaling field, and the value of the transport block scaling field is greater than 0 and less than 1; or A second DCI is sent to the terminal device, where the second DCI includes a first field used to indicate a mapping of a virtual resource block VRB to a physical resource block PRB. The device of claim 10, wherein when the first message includes the RMSI or the OSI, the transceiver unit is further configured to perform one or more of the following operations: sending the first message of a second modulation coding scheme MCS order, the second MCS order being related to the number of bits of the first message; or Send third downlink control information DCI to the terminal device, where the third DCI includes a second field, the second field is used to indicate the mapping of the virtual resource block VRB to the physical resource block PRB; or Send a fourth DCI to the terminal device, where the fourth DCI includes a redundancy version field. The device of claim 10, wherein when the first message includes the message 4, The transceiver unit is also used to perform one or more of the following operations: sending the first message of a third modulation coding scheme MCS order, the third MCS order being related to the number of bits of the first message; or Send fifth downlink control information DCI to the terminal device, where the fifth DCI includes a third field, the third field is used to indicate the mapping of the virtual resource block VRB to the physical resource block PRB; or Send a sixth DCI to the terminal device, where the DCI includes a redundant version field; or The processing unit is also configured to increase the maximum number of hybrid automatic repeat request HARQ transmissions for the first message. A communication device, characterized by including: A transceiver unit, used for sending and receiving information; A processing unit configured to control the transceiver unit to receive first downlink control information DCI from a network device, where the first DCI includes a transport block scaling field, and the value of the transport block scaling field is greater than 0 and less than 1; and/ Or, receive a second DCI from the network device, where the second DCI includes a first field used to indicate a mapping of a virtual resource block VRB to a physical resource block PRB. A communication device, characterized by including a memory, a processor and a transceiver, wherein: The memory is used to store computer instructions; The transceiver is used to receive and send information; The processor is coupled to the memory and configured to invoke computer instructions in the memory to perform the method according to any one of claims 1-6 through the transceiver. A communication device, characterized by including a memory, a processor and a transceiver, wherein: The memory is used to store computer instructions; The transceiver is used to receive and send information; The processor, coupled to the memory, is configured to invoke computer instructions in the memory to perform, through the transceiver, e.g. The method of claim 7. A computer-readable storage medium, characterized in that computer-executable instructions are stored in the computer-readable storage medium, and when called by the computer, the computer-executable instructions execute any of claims 1-6. The method of claim 7, or performing the method of claim 7. A computer program product, characterized in that it contains instructions that, when the instructions are run on a computer, cause the method according to any one of claims 1 to 6, or the method according to claim 7 to be executed . A chip, characterized in that the chip is coupled with a memory and is used to read and execute program instructions stored in the memory to implement the method as described in any one of claims 1-6, or to implement as The method of claim 7.