CN117156403A

CN117156403A - Data transmission method and communication device

Info

Publication number: CN117156403A
Application number: CN202210545812.9A
Authority: CN
Inventors: 曾正洋; 司源; 胡磊
Original assignee: Shanghai Huawei Technologies Co Ltd
Current assignee: Shanghai Huawei Technologies Co Ltd
Priority date: 2022-05-19
Filing date: 2022-05-19
Publication date: 2023-12-01

Abstract

The application discloses a data transmission method and a communication device, wherein when the service type of service data to be transmitted is a first type, an access network device can transmit the first type of service data with a terminal device through a control channel (for example, a first control channel or a second control channel) instead of transmitting the first type of service data with the terminal device through a data channel. Therefore, the terminal device or the access network device can obtain the first type of service data by directly demodulating the control channel, and delay caused by demodulating the control channel and then demodulating the data channel is not introduced. Therefore, the method is beneficial to reducing the time delay introduced by the terminal equipment or the access network equipment when receiving and transmitting the service data, and further beneficial to improving the efficiency of transmitting the service data of the first type.

Description

Data transmission method and communication device

Technical Field

The embodiment of the application relates to the field of communication, in particular to a data transmission method and a communication device.

Background

In current communication systems, a network device and a terminal device may be involved in transmitting traffic data of a certain service in a control channel and a data channel. Taking the example of the terminal device receiving service data from the network device. The terminal device needs to demodulate control information from the control channel, then determine a data channel for transmitting service data based on the control information, and then receive the service data based on the data channel. In addition, the terminal device feeds back the condition of receiving the service data to the network device based on the control channel in the process of receiving the service data, so that the network device triggers a retransmission flow or a new transmission flow based on the service data.

It follows that in the current traffic data transmission mechanism, the processing of the control channel and the processing of the data channel are serial, and the processing of the data channel depends on the processing of the control channel. Such a mechanism easily causes a delay to be introduced by the terminal device when transceiving traffic data. Thus, the foregoing mechanisms may not be suitable for transmitting data for traffic that requires a high latency.

Disclosure of Invention

The application provides a data transmission method and a communication device, which are used for reducing the processing time delay of service data with higher time delay requirements for receiving and transmitting by terminal equipment and improving the efficiency of transmitting the service data with higher time delay requirements between access network equipment and the terminal equipment.

In a first aspect, the present application provides a data transmission method, which relates to an access network device and a terminal device. In the method, the access network equipment can determine the service type of the service data to be transmitted before transmitting the service data; then, when the service type of the service data to be transmitted is the first type, the access network device can send the service data of the first type to the terminal device through the first control channel, and/or the access network device receives the service data of the first type from the terminal device through the second control channel.

Wherein the latency requirement of the first type of traffic is less than a first threshold. It will be appreciated that this first type of traffic is a requirement for time delay. If the time delay (e.g., average time delay) required by a certain service is less than a first threshold, the service belongs to a first type of service, and the service data is the first type of service data.

Optionally, the reliability requirement of the first type of traffic is greater than a second threshold. Optionally, the reliability requirement is a latency reliability requirement.

Optionally, the first type of data is ultra-high reliability ultra-low latency communication (URLLC) service data.

In the application, the access network device can transmit the first type of service data with the terminal device through the control channel (for example, the first control channel and/or the second control channel) instead of transmitting the first type of service data with the terminal device through the data channel, so that the terminal device or the access network device can directly demodulate the control channel to obtain the first type of service data without introducing time delay caused by demodulating the control channel and then demodulating the data channel. Therefore, the method is beneficial to reducing the time delay introduced by the terminal equipment or the access network equipment when receiving and transmitting the service data, and further beneficial to improving the efficiency of transmitting the service data of the first type.

In one possible embodiment, the method further comprises: the access network device sends first indication information to the terminal device, wherein the first indication information is used for indicating the terminal device to receive the first type of service data from the access network device through a first control channel.

Since the terminal device in the conventional art can receive only the first type of traffic data on the data channel, and the information received by the terminal device from the control channel is recognized as control information only by the terminal device. The access network device is provided to instruct the terminal device to receive the first type of service data through the first control channel by the first indication information, so that the terminal device can accurately receive the first type of service data in the first control information, and the terminal device can be prevented from recognizing the first type of service data as control information by mistake, and further the efficiency of the access network device for transmitting the first type of service data to the terminal device is improved.

In one possible implementation manner, the first indication information includes a time-frequency domain location of a first time-frequency resource located in the first control channel, and the first indication information is used to instruct the terminal device to receive the first type of service data on the first time-frequency resource. Optionally, the first time-frequency resource occupies at least one Resource Block (RB) and occupies at least one symbol. The time-frequency domain position of the first time-frequency resource can be represented by an index of the RB and an index of the symbol.

In this embodiment, it is provided that the access network device can indicate, to the terminal device, a time-frequency domain position of the first time-frequency resource occupied by the first control channel, so that the terminal device can find the first time-frequency resource accurately, and further, the terminal device can receive the first type of service data on the first time-frequency resource.

In a possible embodiment, the first indication information further includes type information of the first control channel.

Optionally, the first control channel comprises a physical downlink control channel (physical downlink control channel, PDCCH). Optionally, the type information of the first control channel is used to indicate a type of the PDCCH.

In a possible implementation manner, the first indication information further includes modem information of the first time-frequency resource. The modulation and demodulation information is used for indicating a modulation and demodulation mode used by the first time-frequency resource. Optionally, the modem information includes 16 quadrature amplitude modulation (quadrature amplitude modulation, QAM) and/or 64QAM. Since the higher order modulation scheme (e.g., 16QAM or 64 QAM) has better spectral efficiency than the lower order modulation scheme (e.g., quadrature phase shift keying (quadrature phase shift keying, QPSK) or binary phase shift keying (binary phase shift keying, BPSK)) in the conventional art, it is advantageous to improve the efficiency of transmitting the first type of traffic data based on the first control channel.

In one possible embodiment, the method further comprises: the access network device sends second indication information to the terminal device, where the second indication information is used to instruct the terminal device to send the first type of service data to the access network device through the second control channel.

Since the terminal device in the conventional technology can transmit only the first type of traffic data on the data channel, and the information transmitted by the terminal device through the control channel is recognized as control information only by the access network device. The access network device is provided to instruct the terminal device to send the first type of service data through the second control channel by the second indication information, so that the access network device can accurately receive the first type of service data in the second control information, and the access network device can be prevented from recognizing the first type of service data as the control information by mistake, and further the efficiency of the terminal device transmitting the first type of service data to the access network device is improved.

In a possible implementation manner, the second indication information includes a time-frequency domain position of a second time-frequency resource located in the second control channel, where the second indication information is used to instruct the terminal device to send the first type of service data on the second time-frequency resource. Optionally, the second time-frequency resource occupies at least one RB and occupies at least one symbol. The time-frequency domain position of the second time-frequency resource can be represented by an index of RB and an index of symbol.

In this embodiment, it is provided that the access network device can indicate, to the terminal device, a time-frequency domain position of the second time-frequency resource occupied by the second control channel, so that the terminal device can accurately find the second time-frequency resource, and further, the terminal device can send the first type of service data on the second time-frequency resource.

In a possible embodiment, the second indication information further includes type information of the second control channel.

Optionally, the second control channel comprises a physical uplink control channel (physical uplink control channel, PUCCH). Optionally, the type information of the second control channel is used to indicate a type of PUCCH.

In a possible implementation manner, the second indication information further includes modem information of the second time-frequency resource. The modulation and demodulation information is used for indicating a modulation and demodulation mode used by the second time-frequency resource. Optionally, the modem information includes 16QAM and/or 64QAM. Since the higher order modulation scheme (e.g., 16QAM or 64 QAM) has better spectral efficiency than the lower order modulation scheme (e.g., QPSK or BPSK) in the conventional art, it is advantageous to improve the efficiency of transmitting the first type of traffic data based on the second control channel.

In one possible implementation manner, the determining, by the access network device, a service type of service data to be transmitted includes:

the access network equipment receives service type information from the terminal equipment, wherein the service type information is used for indicating the service type of the service data; or,

the access network equipment receives service type information from the core network equipment, wherein the service type information is used for indicating the service type of the service data; or,

the access network device determines a service type of the service data based on the characteristic information of the service data.

In this embodiment, various embodiments of determining, by the access network device, a service type of service data to be transmitted are provided, which is beneficial for the access network device to flexibly determine whether the service data to be transmitted is the first type of service data.

In one possible implementation, at least two different first messages are encapsulated in a data message carrying the first type of service data, where the first messages are messages generated at an application layer and encapsulating the first type of service data. Alternatively, the different first packets may be packets generated by the application layer at different times, in which the first type of service data is encapsulated. Alternatively, the first packet may be a packet generated by the application layer at regular reporting periods, where the first type of service data is encapsulated.

In this embodiment, it is proposed that the message transmitted through the first control channel and/or the second control channel may be a message after compression processing. For example, the data messages transmitted by the terminal device to the access network device may be compressed by the indication of the two first messages. Because the terminal equipment can compress and transmit the first message carrying the first type of service data, the efficiency of transmitting the first type of service data is improved.

Optionally, at least two data packets carrying the first type of service data are encapsulated with at least one identical first packet.

In this embodiment, it is proposed that the foregoing compression processing may employ a joint compression manner, that is, compression of a certain first packet into at least two data packets, so that a terminal device may implement redundant transmission of the first packet by sending the at least two data packets, which is beneficial to improving a success rate of decoding the packet by an access network device, and further reducing a packet loss rate in the first type of data transmission process.

In one possible embodiment, the terminal device comprises a first terminal device and a second terminal device. At this time, the process of sending the first type of service data to the terminal device by the access network device through the first control channel may specifically be: the access network device sends the service data of the first type through the first control channel according to the channel correlation between the first terminal device and the second terminal device.

Optionally, the channel correlation between the first terminal device and the second terminal device is determined based on first channel information indicating characteristics of a link between the first terminal device and the access network device for transmitting first service data and second channel information indicating characteristics of a link between the second terminal device and the access network device for transmitting second service data. Illustratively, the access network device determines first channel information of the first terminal device and second channel information of the second terminal device, respectively, and then the access network device determines channel correlation between the first terminal device and the second terminal device based on the first channel information and the second channel information.

Optionally, the first service data and the second service data are a first type of service data.

In this embodiment, it is proposed that when the access network device needs to transmit the service data of the first type to two different terminal devices, the access network device will also consider the channel correlation between the two terminal devices, so that it is advantageous for the access network device to determine an appropriate data transmission manner to transmit the service data of the first type.

In a possible implementation manner, the access network device sends the first type of service data through the first control channel according to the channel correlation between the first terminal device and the second terminal device, including: when the channel correlation is greater than a third threshold, the access network device transmits the first service data of the first terminal device and the second service data of the second terminal device through a target beam, wherein the coverage area of the target beam comprises the first terminal device and the second terminal device.

In this embodiment, the access network device may send the first service data and the second service data by using one target beam (i.e., send the first service data and the second service data by using a multicast manner) when the channel correlation between the first terminal device and the second terminal device is high. Because one target beam occupies the same time-frequency resource, the time-frequency resource can be saved, and the utilization rate of the wireless resource can be improved.

In one possible implementation, a separator is disposed between the first service data and the second service data carried on the target beam, where the separator is used to distinguish bits occupied by the first service data from bits occupied by the second service data.

In this embodiment, it is proposed that the separator may be used to distinguish the bit occupied by the first service data from the bit occupied by the second service data, which is favorable to improving the accuracy of the first terminal device for obtaining the first service data and the accuracy of the second terminal device for obtaining the second service data.

In one possible embodiment, the method further comprises: the access network device sends third indication information to the terminal device, where the third indication information is used to indicate a bit occupied by the first service data and/or a bit occupied by the second service data.

In this embodiment, the access network device may indicate, to the terminal device, the bit occupied by the first service data and/or the bit occupied by the second service data through the third indication information, so as to facilitate improving the accuracy of the first terminal device in acquiring the first service data, and facilitate improving the accuracy of the second terminal device in acquiring the second service data.

In one possible embodiment, the first terminal device and the second terminal device belong to the same multicast group, the channel correlation between terminal devices located in the same multicast group is higher than a fourth threshold, and the channel correlation between terminal devices located in different multicast groups is lower than a fifth threshold.

In a second aspect, the present application provides a data transmission method, which relates to a terminal device and an access network device. In the method, a terminal device determines a service type of service data to be transmitted; when the service type of the service data is a first type, the terminal device receives the service data of the first type from the access network device through a first control channel, and/or the terminal device sends the service data of the first type to the access network device through a second control channel, wherein the time delay requirement of the service of the first type is smaller than a first threshold value.

Optionally, the reliability requirement of the first type of traffic is greater than a second threshold.

Optionally, the data of the first type is data of ultra-high reliability ultra-low latency communication URLLC service.

In one possible embodiment, the method further comprises: the terminal device receives first indication information from the access network device, where the first indication information is used to instruct the terminal device to receive the first type of service data from the access network device through the first control channel.

In one possible implementation manner, the first indication information includes a time-frequency domain location of a first time-frequency resource located in the first control channel, and the first indication information is used to instruct the terminal device to receive the first type of service data on the first time-frequency resource.

Optionally, the first control channel includes a physical downlink control channel PDCCH.

In a possible implementation manner, the first indication information further includes modem information of the first time-frequency resource.

In one possible embodiment, the method further comprises: the terminal device receives second indication information from the access network device, where the second indication information is used to instruct the terminal device to send the first type of service data to the access network device through the second control channel.

In a possible implementation manner, the second indication information includes a time-frequency domain position of a second time-frequency resource located in the second control channel, where the second indication information is used to instruct the terminal device to send the first type of service data on the second time-frequency resource.

Optionally, the second control channel includes a physical uplink control channel PUCCH.

In a possible implementation manner, the second indication information further includes modem information of the second time-frequency resource.

In one possible implementation, the second time-frequency resource occupies at least two RBs on the frequency domain.

In one possible implementation manner, the determining, by the terminal device, a service type of service data to be transmitted includes: the terminal device determines a service type of the service data based on the characteristic information of the service data.

In one possible implementation manner, at least two different first messages are encapsulated in one data message carrying the first type of service data, and at least one identical first message is encapsulated in at least two data messages carrying the first type of service data, where the first message is a message generated at an application layer and encapsulating the first type of service data.

It should be noted that, the embodiments and the beneficial effects of the present aspect are similar to some of the embodiments in the first aspect, and specific reference may be made to the embodiments and the beneficial effects of the first aspect, which are not described herein.

In a third aspect, the present application provides a data transmission method, which relates to a terminal device and an access network device. In the method, an access network device determines a service type of service data to be transmitted, and when the service type of the service data is a first type, the access network device sends the service data of the first type to a terminal device through a first control channel; accordingly, the terminal device receives the first type of traffic data from the access network device over the first control channel. Wherein the latency requirement of the first type of traffic is less than a first threshold.

In one possible embodiment, the method further comprises: the access network equipment sends first indication information to the terminal equipment; accordingly, the terminal device receives the first indication information from the access network device. The first indication information is used for indicating the terminal equipment to receive the first type of service data from the access network equipment through the first control channel.

Optionally, the first indication information includes a time-frequency domain location of a first time-frequency resource located in the first control channel, and the first indication information is used for indicating the terminal device to receive the first type of service data on the first time-frequency resource.

Optionally, the first indication information further includes type information of the first control channel, and/or modem information of the first time-frequency resource.

In one possible embodiment, the method further comprises: the terminal equipment sends the first type of service data to the access network equipment through a second control channel; accordingly, the access network device receives the first type of traffic data from the terminal device over the second control channel.

In one possible embodiment, the method further comprises: the access network equipment sends second indication information to the terminal equipment; accordingly, the terminal device receives the second indication information from the access network device. The second indication information is used for indicating the terminal equipment to send the first type of service data to the access network equipment through the second control channel.

Optionally, the second indication information includes a time-frequency domain location of a second time-frequency resource located in the second control channel, where the second indication information is used to instruct the terminal device to send the first type of service data on the second time-frequency resource.

Optionally, the second indication information further includes type information of the second control channel, and/or modem information of the second time-frequency resource.

In one possible implementation, the access network device determines the service type of the service data to be transmitted by any one of the following means: the access network equipment receives service type information from the terminal equipment, wherein the service type information is used for indicating the service type of service data; or, the access network device receives service type information from the core network device, wherein the service type information is used for indicating the service type of the service data; or the access network equipment determines the service type of the service data based on the characteristic information of the service data.

In one possible implementation manner, at least two different first messages are encapsulated in one data message carrying the first type of service data, at least one identical first message is encapsulated in at least two data messages carrying the first type of service data, and the first message is a message generated at an application layer and encapsulating the first type of service data.

In one possible embodiment, the access network device transmits the first type of traffic data over the first control channel according to a channel correlation between the first terminal device and the second terminal device.

In one possible implementation, when the channel correlation is greater than the third threshold, the access network device transmits the first service data of the first terminal device and the second service data of the second terminal device through one target beam, and the coverage area of the target beam includes the first terminal device and the second terminal device.

Optionally, the first terminal device and the second terminal device belong to the same multicast group, the channel correlation between the terminal devices in the same multicast group is higher than a fourth threshold, and the channel correlation between the terminal devices in different multicast groups is lower than a fifth threshold.

In a fourth aspect, the present application provides a data transmission method in which an access network device determines a channel correlation between a first terminal device and a second terminal device based on first channel information and second channel information; when the channel correlation is above a third threshold, the access network device transmits the first traffic data and the second traffic data over a target beam. Wherein the first channel information is used for indicating the characteristics of a link between the first terminal equipment and the access network equipment for transmitting first service data; the second channel information is used for indicating the characteristics of a link between the second terminal equipment and the access network equipment for transmitting second service data; the coverage area of the target beam includes the first terminal device and the second terminal device.

In one possible implementation, a separator is disposed between the first traffic data and the second traffic data carried on the target beam, and the separator is used for distinguishing bits of the first traffic data from bits of the second traffic data.

In one possible implementation, the first service data and the second service data are a first type of service data, and the delay requirement of the first type of service is less than a first threshold.

In one possible implementation, the reliability requirement of the first type of traffic is greater than a second threshold.

In one possible implementation, the first type of data is ultra-high reliability ultra-low latency communication URLLC traffic data.

In one possible embodiment, the method further comprises: the access network equipment determines the channel correlation between any two terminal equipment in at least three terminal equipment based on the channel information of the at least three terminal equipment; the access network equipment determines at least one multicast group based on the channel correlation between any two terminal equipment in the at least three terminal equipment, wherein the channel correlation between any two terminal equipment in the same multicast group is higher than a fourth threshold, and the channel correlation between any two terminal equipment in different multicast groups is lower than a fifth threshold; the access network device transmits the service data of the terminal devices in the same multicast group through a target beam.

In a fifth aspect, the present application provides a communication apparatus, which is an access network device. The communication device comprises a processing module and a receiving and transmitting module. The processing module is used for determining the service type of the service data to be transmitted; when the processing module determines that the service type of the service data is the first type, the processing module controls the transceiver module to send the service data of the first type to the terminal equipment through a first control channel and/or receive the service data of the first type from the terminal equipment through a second control channel. Wherein the latency requirement of the first type of traffic is less than a first threshold.

In a possible embodiment, the transceiver module is further configured to send first indication information to the terminal device, where the first indication information is configured to instruct the terminal device to receive the first type of service data from the access network device through the first control channel.

In a possible embodiment, the transceiver module is further configured to send second indication information to the terminal device, where the second indication information is configured to instruct the terminal device to send the first type of service data to the access network device through the second control channel.

In a possible embodiment, the transceiver module is further configured to receive service type information from the terminal device, and the processing module is further configured to determine a service type of the service data to be transmitted based on the received service type information. The service type information is used for indicating the service type of the service data.

In a possible embodiment, the transceiver module is further configured to receive service type information from the core network device, and the processing module is further configured to determine a service type of the service data to be transmitted based on the received service type information. The service type information is used for indicating the service type of the service data.

In a possible embodiment, the processing module is specifically configured to determine a service type of the service data based on the characteristic information of the service data.

In one possible embodiment, the terminal device comprises a first terminal device and a second terminal device. The processing module is specifically configured to control the transceiver module to transmit the first type of service data through the first control channel according to the channel correlation between the first terminal device and the second terminal device.

In one possible implementation, when the processing module determines that the channel correlation is greater than the third threshold, the transceiver module is controlled to transmit the first service data of the first terminal device and the second service data of the second terminal device through one target beam, and the coverage area of the target beam includes the first terminal device and the second terminal device.

In a sixth aspect, the present application further provides a communication apparatus, where the communication apparatus is a terminal device. The communication device comprises a processing module and a receiving and transmitting module. The processing module is used for determining the service type of the service data to be transmitted. When the processing module determines that the service type of the service data is the first type, the control transceiver module receives the service data of the first type from the access network equipment through a first control channel and/or sends the service data of the first type to the access network equipment through a second control channel. Wherein the latency requirement of the first type of traffic is less than a first threshold.

In a possible embodiment, the transceiver module is further configured to receive first indication information from the access network device, where the first indication information is configured to instruct the terminal device to receive the first type of service data from the access network device through the first control channel.

In a possible embodiment, the transceiver module is further configured to receive second indication information from the access network device, where the second indication information is configured to instruct the terminal device to send the first type of service data to the access network device through the second control channel.

In a seventh aspect, the present application further provides a communication apparatus, where the communication apparatus is an access network device. The communication device comprises a processing module and a receiving and transmitting module. The processing module determines channel correlation between the first terminal equipment and the second terminal equipment based on the first channel information and the second channel information; when the processing module determines that the channel correlation is higher than the third threshold, the processing module controls the transceiver module to transmit the first service data and the second service data through one target beam.

Wherein the first channel information is used for indicating the characteristics of a link between the first terminal equipment and the access network equipment for transmitting first service data; the second channel information is used for indicating the characteristics of a link between the second terminal equipment and the access network equipment for transmitting second service data; the coverage area of the target beam includes the first terminal device and the second terminal device.

In a possible implementation manner, the transceiver module is further configured to send third indication information to the terminal device, where the third indication information is used to indicate a bit occupied by the first service data and/or a bit occupied by the second service data.

Optionally, the first service data and the second service data are first type service data, and a delay requirement of the first type service is smaller than a first threshold.

Optionally, the first terminal device and the second terminal device belong to the same multicast group, the channel correlation between terminal devices in the same multicast group is higher than a fourth threshold, and the channel correlation between terminal devices in different multicast groups is lower than a fifth threshold.

In a possible implementation manner, the processing module is further configured to determine a channel correlation between any two terminal devices of the at least three terminal devices based on channel information of the at least three terminal devices; determining at least one multicast group based on the channel correlation between any two terminal devices in the at least three terminal devices, wherein the channel correlation between any two terminal devices in the same multicast group is higher than a fourth threshold value, and the channel correlation between any two terminal devices in different multicast groups is lower than a fifth threshold value; and controlling the transceiver module to transmit the service data of the terminal equipment in the same multicast group through one target beam.

It should be noted that, the embodiments and the advantageous effects of the present aspect are similar to some of the embodiments in the fourth aspect, and specific reference may be made to the embodiments and the advantageous effects of the fourth aspect, which are not described herein.

In an eighth aspect, the present application provides a communication apparatus, which may be an access network device in the foregoing embodiment or may be a chip in the access network device. The communication device may include a processing module and a transceiver module. When the communication device is an access network device, the processing module may be a processor, and the transceiver module may be a transceiver; the access network device may further comprise a storage module, which may be a memory; the storage module is used for storing instructions, and the processing module executes the instructions stored by the storage module, so that the access network device executes the method in the first aspect or any implementation manner of the first aspect; alternatively, the method of the fourth aspect or any of the embodiments of the fourth aspect is performed. When the communication device is a chip in the access network device, the processing module may be a processor, and the transceiver module may be an input/output interface, a pin, a circuit, or the like; the processing module executes the instructions stored by the storage module to cause the access network device to perform the method of the first aspect or any implementation of the first aspect; alternatively, the method of the fourth aspect or any of the embodiments of the fourth aspect is performed. The memory module may be a memory module (e.g., register, cache, etc.) within the chip, or may be a memory module (e.g., read only memory, random access memory, etc.) within the access network device that is external to the chip.

In a ninth aspect, the present application provides a communication apparatus, which may be a terminal device in the foregoing embodiment or may be a chip in the terminal device. The communication device may include a processing module and a transceiver module. When the communication device is a terminal device, the processing module may be a processor, and the transceiver module may be a transceiver; the terminal device may further include a storage module, which may be a memory; the storage module is configured to store instructions, and the processing module executes the instructions stored by the storage module, so that the terminal device performs the second aspect or the method in any implementation manner of the second aspect. When the communication device is a chip in the terminal equipment, the processing module may be a processor, and the transceiver module may be an input/output interface, a pin, a circuit, or the like; the processing module executes the instructions stored by the storage module to cause the terminal device to perform the second aspect or any implementation of the method of the second aspect. The memory module may be a memory module (e.g., register, cache, etc.) within the chip, or may be a memory module (e.g., read-only memory, random access memory, etc.) within the terminal device that is external to the chip.

In a tenth aspect, the present application provides a communications device, which may be an integrated circuit chip. The integrated circuit chip includes a processor. The processor is coupled to a memory for storing programs or instructions which, when executed by the processor, cause the communications apparatus to perform the method as described in any of the embodiments of the various aspects described above.

In an eleventh aspect, the application provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method as described in any of the embodiments of the various aspects described above.

In a twelfth aspect, the application provides a computer-readable storage medium comprising instructions which, when executed on a computer, cause the computer to perform a method as described in any one of the embodiments of the preceding aspects.

In a thirteenth aspect, the present application provides a communication system comprising an access network device performing any of the foregoing first aspect and the first aspect, and a terminal device performing any of the foregoing second aspect and the second aspect.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present application.

FIG. 1A is a diagram illustrating an exemplary system architecture of a data transmission method of the present application;

FIG. 1B is another exemplary diagram of a system architecture of a data transmission method of the present application;

FIG. 1C is another exemplary diagram of a system architecture of a data transmission method of the present application;

FIG. 2 is a flow chart of a data transmission method of the present application;

FIG. 3 is another flow chart of the data transmission method of the present application;

FIG. 4 is another flow chart of the data transmission method of the present application;

FIG. 5A is a diagram of an exemplary target beam in accordance with the present application;

FIG. 5B is a diagram of another example of a target beam in the present application;

FIG. 6 is another flow chart of the data transmission method of the present application;

FIG. 7 is a schematic diagram of an embodiment of a communication device according to the present application;

fig. 8 is a schematic diagram of another embodiment of a communication device according to the present application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments.

The terms "first," "second," "third," "fourth" and the like in the description and in the claims and in the above drawings, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments described herein are capable of operation in other sequences than illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

It should be understood that the term "and/or" is merely an association relationship describing the associated object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

For easy understanding, the following first describes the system architecture and application field Jing Jinhang of the data transmission method proposed in the present application:

the data transmission method provided by the application can be applied to a New Radio (NR) system of a fifth generation mobile network (5th generation mobile networks,5G), a sixth generation mobile information technology (the 6th generation mobile communication technology,6G) system and a subsequent evolution system, and the application is not limited to this. As shown in fig. 1A, the communication system includes at least a terminal device and an access network device.

Wherein the terminal device comprises a device for providing voice and/or data connectivity to the user. For example, a handheld device with wireless connectivity or a processing device connected to a wireless modem may be included. The terminal device may communicate with a core network (e.g., a 5G core network (5th generation core,5GC)) via a radio access network (radio access network, RAN) with which voice and/or data may be exchanged. The Terminal device may also be referred to as a Terminal (Terminal), a User Equipment (UE), a wireless Terminal device, a Mobile Terminal (MT) device, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a Mobile Station (MS), a mobile station (mobile), a remote station (remote station), an Access Point (AP), a remote Terminal device (remote Terminal), an access Terminal device (access Terminal), a user Terminal device (user Terminal), a user agent (user agent), or a user equipment (user device), etc. Further, the terminal device may be a mobile phone (mobile phone), a tablet (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) device, an augmented reality (augmented reality, AR) device, an augmented reality (XR) service terminal, a Cloud Gaming (CG) service terminal, a wireless terminal in industrial control (industrial control), a wireless terminal in unmanned (self-driving), a wireless terminal in teleoperation (remote medical surgery), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation security (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), or the like. It should be understood that the embodiment of the present application does not limit the specific technology and the specific device configuration adopted by the terminal device. The terminal device in the present application may be any device or chip as described above, and is not limited herein. The terminal device can be manufactured, sold or used as a stand-alone product, whether as a device or as a chip. In this and subsequent embodiments, a terminal device is taken as an example to describe the present embodiment.

An access network device, which may be any device having a radio transceiver function, may be used to take charge of air interface related functions, such as radio link maintenance functions, radio resource management functions, and partial mobility management functions. In addition, the access network device may be further configured with a baseband unit (BBU), and has a baseband signal processing function. The access network device may be, for example, an access network device (radio access network, RAN) currently serving the terminal device. Currently, some common examples of access network devices are: a Node B (Node B, NB), an evolved Node B (eNB), a next generation Node B (next generation Node B, gNB) in a 5G New Radio (NR) system, a Node (e.g., xNodeB) in a 6G system, a transmission reception point (transmission reception point, TRP), a radio network controller (radio network controller, RNC), a base station controller (base station controller, BSC), a base transceiver station (base transceiver station, BTS), a home base station (e.g., home evolved Node (home evolved NodeB) or home Node B, HNB), and the like. Further, in a network structure such as a cloud access network (cloud radio access network, cloudRAN) or an open access network (open radio access network, ora), the access network device may be a device including a Centralized Unit (CU) (also referred to as a control unit) and/or a Distributed Unit (DU). The RAN equipment comprising the CU and the DU splits the protocol layers of the gNB in the NR system, the functions of part of the protocol layers are controlled in the CU in a centralized way, and the functions of the rest part or all of the protocol layers are distributed in the DU, so that the CU controls the DU in a centralized way. It should be understood that the access network device in the embodiment of the present application may be any of the foregoing devices or a chip in the foregoing device, and is not limited specifically herein. The access network device may be manufactured, sold, or used as a stand-alone product, whether as a device or as a chip. In this and subsequent embodiments, access network devices are described as an example.

Optionally, the communication system may further comprise a core network device. The core network device refers to a device in a Core Network (CN) that provides service support for the terminal device. Currently, some common examples of core network devices are: access and mobility management function (access and mobility management function, AMF) entities, session management function (session management function, SMF) entities, user plane function (user plane function, UPF) entities, and the like, to name but a few. The AMF entity can be responsible for access management and mobility management of the terminal equipment; the SMF entity may be responsible for session management, such as session establishment for the user, etc.; the UPF entity may be a functional entity of the user plane, mainly responsible for connecting to external networks. It should be noted that, in the present application, an entity may also be referred to as a network element or a functional entity. For example, the AMF entity may also be referred to as an AMF network element or an AMF functional entity; for another example, the SMF entity may also be referred to as an SMF network element or an SMF functional entity, etc.

Specifically, the data transmission method provided by the application can be applied to the scene of transmitting the data of the service with higher time delay requirement. Optionally, the data transmission method can also be applied to a scenario of transmitting data of a service with high requirements on delay reliability.

By way of example, traffic with high latency or latency reliability requirements may be latency sensitive type traffic in an industrial scenario. At this time, the terminal device includes an industrial terminal and a terminal for communicating with the access network. Alternatively, the industrial terminal may be a control class node in a 3C manufacturing/automotive manufacturing class factory capable of generating messages related to delay sensitive class traffic during an industrial process. For example, the industrial terminals may be programmable logic controller (programmable logic controller, PLC) devices, input-output (IO) devices, wireless sensors, and the like. Alternatively, the terminal used for communicating with the access network may be a computer device or a management device with a communication function, etc. for collecting the messages related to the delay sensitive service generated by the industrial terminal and transmitting the messages related to the delay sensitive service to the access network device.

For example, as shown in fig. 1B, the data transmission method of the present application can be applied in a single-ended wireless industrial scenario. The terminal devices in this scenario include at least one industrial terminal (e.g., industrial terminal 1 and industrial terminal 2) and one terminal (e.g., 5G terminal) for communicating with the access network device. Wherein, the 5G terminal is connected with the industrial terminal 1 through an IC-1 interface. The IC-1 interface supports Internet protocol (internet protocol, IP), ethernet (Ethernet) and other industrial communication scene extended protocol types. The 5G terminal communicates with the access network device over a Uu interface (e.g., NR-Uu). The access network device communicates with the core network device via an interface (e.g., an N3 interface). Optionally, the core network device is also capable of communicating with the industrial terminal 2 via an N6 interface.

As another example, as shown in fig. 1C, the data transmission method of the present application can be applied to a dual-end wireless industrial scenario. The terminal devices in this scenario include at least two industrial terminals (e.g., industrial terminal 1 and industrial terminal 2) and at least two terminals (e.g., 5G terminal 1 and 5G terminal 2) for communicating with the access network device. Wherein, 5G terminal 1 is connected with industry terminal 1 through IC-1 interface, and 5G terminal 2 is connected with industry terminal 2 through IC-1 interface. The 5G terminal 1 communicates with the access network device 1 via a Uu interface (e.g. NR-Uu) and the 5G terminal 2 communicates with the access network device 2 via a Uu interface (e.g. NR-Uu). The access network device 1 and the access network device 2 communicate with the core network device via an interface (e.g. an N3 interface).

It will be appreciated that in some scenarios the industrial terminal is also capable of communicating with the access network device, in which case the industrial terminal is also a terminal for communicating with the access network. The terminal device described later may be an industrial terminal capable of communicating with the access network device, a terminal for communicating with the access network, or a combination of a terminal for communicating with the access network and an industrial terminal, which is not limited herein.

It should be understood that, in practical applications, the data transmission method of the present application may also be applied to other ultra-high reliability ultra-low-latency communications (URLLC).

The main flow of the data transmission method according to the present application will be described with reference to fig. 2, in which the terminal device and the access network device mainly perform the following steps.

In step 201a, the access network device determines the service type of the service data to be transmitted.

The service data refers to data related to a certain service interacted between the access network equipment and the terminal equipment. The service type of the service data refers to a type of a service provided for the terminal device or the network device by transmitting the aforementioned service data.

Illustratively, the service types can be classified into a delay-sensitive service and a delay-insensitive service according to the degree of delay requirement. The delay sensitive service refers to that the delay requirement of the service is smaller than a threshold value 1, namely the transmission delay of service data is smaller than the threshold value 1, otherwise, the service cannot normally run or fails. The delay insensitive service refers to the service with the delay requirement smaller than the threshold 2 (wherein the threshold 2 is larger than the threshold 1), that is, the normal operation of the service is not affected when the transmission delay of the service data is not larger than the threshold 2.

Alternatively, reliability (also referred to as latency reliability) may also be used to describe the latency requirements. The delay reliability is used to indicate the proportion of the total data transmission amount to the data transmission amount that meets the delay requirement. For example, the reliability of the delay is {20ms,99.9% }, which means that the delay of 99.9% of the total data transmission is less than 20ms, and it is understood that the probability that the delay of less than 20ms during data transmission can reach 99.9%.

Optionally, the service type of the service data includes a first type. The first type of traffic satisfies any one of the following conditions:

in one possible implementation, the latency requirement of the first type of traffic is less than a first threshold. It will be appreciated that this first type of traffic is a requirement for time delay. If the average time delay required by a certain service is smaller than the first threshold value, the service belongs to the first type of service.

Illustratively, the first threshold is less than or equal to 20ms. For example, the latency requirement for the first type of traffic is less than 20ms, meaning that the average latency for the first type of traffic is less than 20ms.

In another possible implementation, the latency requirement of the first type of traffic is less than a first threshold and the reliability requirement of the first type of traffic is greater than a second threshold. It is understood that the first type of traffic is traffic that requires a certain delay and that requires a certain delay reliability.

Illustratively, the first threshold is less than or equal to 20ms and the second threshold is greater than or equal to 99.9%. For example, the latency requirement for the first type of traffic is less than 15ms and the reliability requirement for the first type of traffic is greater than 99.99%, meaning that the latency requirement for the first type of traffic is less than 15ms and the probability of latency during data transmission is less than 15ms can reach 99.99%.

It should be understood that the foregoing first threshold and second threshold may be specified by a protocol, may be manually preset, or may be calculated by a network device (e.g., an access network device or a core network device) based on characteristics of various services currently running, and the determining manner of the first threshold and the second threshold is not limited in the present application.

Optionally, the first type of traffic is highly reliable and low latency traffic. Illustratively, the first type of data is ultra-high reliability ultra-low latency communication (URLLC) traffic data.

Specifically, the access network device may determine the service type of the service data to be transmitted through any one of the following embodiments.

In one possible implementation, the access network device receives service type information from the terminal device, the service type information being used to indicate a service type of the service data. The terminal device determines service type information, and then the terminal device sends the service type information to the access network device; accordingly, the access network device receives the service type information from the terminal device.

In another possible embodiment, the access network device receives service type information from the core network device, the service type information being used to indicate a service type of the service data. The core network device determines service type information, and then the core network device sends the service type information to the access network device; accordingly, the access network device receives the service type information from the core network device.

In another possible embodiment, the access network device determines the service type of the service data based on the characteristic information of the service data.

Wherein, the characteristic information of the business data is used for describing the characteristics of the business data. The characteristics of the service data may be characteristics of the service data when the service data is generated, characteristics of the service data when the service data is transmitted, and characteristics of the size of a data packet of the service data. The characteristic information of the service data may be, for example, a generation period of a message, an average message load size, a service quality class identifier (quality of service class identifier, qoS class identifier, QCI) bearer type of the message, a source/destination address of the message, and the like, which are not limited herein.

When the service type of the service data is the first type, the access network device will perform step 202 and/or step 203; when the traffic type of the traffic data is not the first type, the access network device will transmit the traffic data over a data channel in conventional technology. Optionally, in this embodiment, the access network device further sends a service type of the service data to the terminal device, so that after determining that the service type of the service data is the first service type, the terminal device performs step 202 and/or step 203.

In step 201b, the terminal device determines the service type of the service data to be transmitted.

Step 201b is an optional step.

For an explanation of the service type, please refer to the related description in the foregoing step 201a, which is not repeated herein.

Specifically, the terminal device may determine the service type of the service data to be transmitted through any one of the following embodiments.

In one possible implementation, the terminal device receives service type information from the access network device, the service type information being used to indicate a service type of the service data. The access network device determines service type information, and then the access network device sends the service type information to the terminal device; accordingly, the terminal device receives the service type information from the access network device.

In another possible embodiment, the terminal device determines the service type of the service data based on the characteristic information of the service data. Specifically, the manner in which the terminal device determines the service type of the service data is similar to the manner in which the access network device determines the service type of the service data, please refer to the description in step 201a, and details are omitted here.

When the service type of the service data is the first type, the terminal device will execute step 202 and/or step 203; when the traffic type of the traffic data is not the first type, the terminal device will receive the traffic data through a data channel in the conventional art.

Step 202, an access network device sends first type service data to a terminal device through a first control channel; accordingly, the terminal device receives service data from the access network device over the first control channel.

It should be understood that the access network device and the terminal device can determine, by a predefined manner of a protocol or other manners, a time-frequency domain location of a time-frequency resource occupied by a first control channel transmitting the first type of traffic data. Therefore, when the access network device determines that the service data to be transmitted is the first type of service data, the access network device can determine the time-frequency domain position of the first control channel and send the first type of service data to the terminal device through the first control channel. Accordingly, when determining that the service type of the service data is the first type, the terminal device will also determine the time-frequency domain position of the first control channel and receive the service data of the first type from the access network device through the first control channel.

The first control channel is a downlink control channel, that is, a channel in which the access network device transmits downlink control information (downlink control information, DCI) to the terminal device. The downlink control channel in the conventional technology is used for transmitting DCI, and the first control channel in the present embodiment may be used for the access network device to transmit the first type of service data to the terminal device. Because the delay requirement and the reliability requirement of the first type of service data are higher, the control channel is adopted instead of the data channel to transmit the first type of service data, and the delay caused by the fact that the data channel processing process depends on the control channel processing process is not caused, the delay introduced by the terminal equipment during the process of receiving and transmitting the service data is reduced, and the reliability of data transmission is improved.

In addition, the data channel is encoded with a low density parity check code (low density parity check code, LDPC) (hereinafter, LDPC code) and the control channel is encoded with a Polar code (Polar code) (hereinafter, polar code) in the conventional art. Because the first type of service data is packet data, and the Polar code has the advantages of low demodulation threshold, low complexity, low time delay and the like, the control channel is adopted to transmit the first type of service data instead of the data channel, which is beneficial to improving the transmission efficiency of the first type of service data.

Optionally, the first control channel comprises a physical downlink control channel (physical downlink control channel, PDCCH). Specifically, the access network device may use the format of the PDCCH existing in the conventional technology, or may use the format of the PDCCH newly defined in the present application.

In one possible implementation, the first control channel is a PDCCH in the conventional art. At this time, the access network device carries the first type of service data in the PDCCH in the conventional technology. The PDCCH in the conventional art divides the PDCCH into a plurality of formats according to the format of the carried DCI. Wherein, the DCI carried by the PDCCH includes a DCI format (DCI formats for scheduling of PUSCH) for scheduling PUSCH, a DCI format (DCI formats for scheduling of PDSCH) for scheduling PDSCH, and a DCI format (DCI formats for other purposes) for other purposes.

In one possible example of this embodiment, the access network device may carry the first type of traffic data in a PDCCH corresponding to a DCI format for other purposes.

For example, when the first control channel is a PDCCH, the format of DCI that may be used for the first control channel is shown in table 1-1 below:

TABLE 1-1

Illustratively, the first control channel supports downlink control information of Format 2_0 (i.e., DCI Format 2_0). Because the DCI Format 2_0 can carry 128bits of data, the first control channel can provide sufficient time-frequency resources for carrying the first type of service data, thereby being beneficial to improving the transmission efficiency of the first type of service data.

In another possible implementation, the first control channel is a PDCCH newly defined by the present application. At this time, the access network device loads the first type of service data in the format of the PDCCH newly defined in the present application.

Optionally, the first control channel supports a higher order modulation scheme. The access network device, for example, modulates and demodulates the first type of service data in a high-order modulation mode. Exemplary higher order modulation schemes include 16 quadrature amplitude modulation (quadrature amplitude modulation, QAM) and/or 64QAM. Since the higher order modulation scheme (e.g., 16QAM or 64 QAM) can improve spectral efficiency compared to the lower order modulation scheme (e.g., quadrature phase shift keying (quadrature phase shift keying, QPSK) or binary phase shift keying (binary phase shift keying, BPSK)) in the conventional art, it is advantageous to save spectral resources.

Optionally, the first control channel supports a larger number of bits or Resource Blocks (RBs). Illustratively, the first control channel supports carrying data greater than 128 bits.

Step 203, the terminal device sends the first type of service data to the access network device through the second control channel; accordingly, the access network device receives the first type of traffic data from the terminal device over the second control channel.

Step 203 is an optional step.

It should be understood that the access network device and the terminal device can determine, by means of a protocol predefined manner or other manners, the time-frequency domain location of the time-frequency resource occupied by the second control channel transmitting the traffic data of the first type. Therefore, when the terminal device determines that the service data to be transmitted is the first type of service data, or when the terminal device receives the first type of service data through the first control channel, the terminal device can determine the time-frequency domain position of the second control channel and send the first type of service data to the access network device through the second control channel. Accordingly, when the access network device determines that the service type of the service data is the first type, the access network device will also determine the time-frequency domain position of the second control channel and receive the service data of the first type from the terminal device through the second control channel.

The second control channel is an uplink control channel, i.e. a channel in which the terminal device transmits uplink control information (uplink control information, UCI) to the access network device. The uplink control channel in the conventional technology is used for transmitting UCI, and the second control channel in the present embodiment may be used for the terminal device to transmit the first type of service data to the access network device. Because the delay requirement and the reliability requirement of the first type of service data are higher, the control channel is adopted instead of the data channel to transmit the first type of service data, and the delay caused by the fact that the data channel processing process depends on the control channel processing process is not caused, the delay introduced by the terminal equipment during the process of receiving and transmitting the service data is reduced, and the reliability of data transmission is improved.

Optionally, the second control channel comprises a physical uplink control channel (physical uplink control channel, PUCCH). Specifically, the terminal device may use the format of the PUCCH existing in the conventional technology, or may use the format of the PUCCH newly defined in the present application.

In one possible implementation, the second control channel is a PUCCH in conventional technology. At this time, the terminal device sends the first type of service data carried in the PUCCH in the conventional technology to the access network device.

For example, when the second control channel is a PUCCH, the format of the PUCCH in the conventional technology that the second control channel can use is as shown in table 2-1 below:

TABLE 2-1

Illustratively, the second control channel supports PUCCH of Format3 (PUCCH Format 3). Wherein the PUCCH of format3 occupies at least 4 symbols and at most 14 symbols. In addition, the PUCCH of format3 can carry a data amount greater than 2 bits. Since the PUCCH of format3 can support a larger number of symbols and a larger number of bits, the PUCCH of format3 can provide enough time-frequency resources for carrying the first type of service data, thereby being beneficial to improving the transmission efficiency of the first type of service data.

In another possible embodiment, the second control channel is a PUCCH newly defined by the present application. At this time, the terminal device loads the first type of service data in the format of the PUCCH newly defined in the present application.

Optionally, the second control channel supports a higher order modulation scheme. The access network device, for example, modulates and demodulates the first type of service data in a high-order modulation mode. Exemplary higher order modulation schemes include 16QAM and/or 64QAM. Since the higher order modulation scheme (e.g., 16QAM or 64 QAM) can improve spectral efficiency compared to the lower order modulation scheme (e.g., QPSK or BPSK) in the conventional art, it is advantageous to save spectral resources.

Optionally, the second control channel supports at least one RB for one terminal device for transmitting the first type of service data. Illustratively, the terminal device may transmit the first type of traffic data to the access network device over two RBs on the second control channel. Compared with the scheme that only one RB can be used for transmitting uplink control information by the same terminal device in the prior art, the second control channel in the embodiment supports the number of RBs used by a single user, so that more frequency domain resources on the same time domain can be allocated to a certain terminal device, and the method is beneficial to improving the data quantity transmitted by the second control channel.

For example, when the second control channel is a PUCCH, the newly defined PUCCH format that may be used by the second control channel is shown in table 2-2 below:

TABLE 2-2

In the example shown in table 2-2, the second control channel supports PUCCH of format 5. Wherein, the PUCCH of format 5 is a format of PUCCH newly defined in the present application. The PUCCH of this format 5 occupies at least 1 symbol and at most 14 symbols. Furthermore, the PUCCH of format 5 can carry a data amount greater than 2 bits. Since the PUCCH of format 5 can support a larger number of symbols and a larger number of bits, the PUCCH of format 5 can provide enough time-frequency resources for carrying the first type of service data, thereby being beneficial to improving the transmission efficiency of the first type of service data.

In this embodiment, since the access network device can transmit the first type of service data to the terminal device through the first control channel, instead of transmitting the first type of service data to the terminal device through the data channel, the terminal device can obtain the first type of service data by directly demodulating the control channel, and the delay caused by demodulating the control channel and then the data channel is not introduced. Therefore, the method is beneficial to reducing the time delay introduced by the terminal equipment when receiving and transmitting the service data, and further beneficial to improving the efficiency of transmitting the service data of the first type. In addition, since the access network device can receive the first type of service data from the terminal device through the second control channel, instead of receiving the first type of service data from the terminal device through the data channel, the access network device can directly demodulate the control channel to obtain the first type of service data, and delay caused by processing the control channel first and then processing the data channel is not introduced. Therefore, the method is beneficial to reducing the time delay introduced by the access network equipment when receiving and transmitting the service data, and further beneficial to improving the efficiency of transmitting the service data of the first type.

Another embodiment of the data transmission method according to the application will be described in connection with fig. 3, in which method the terminal device and the access network device mainly perform the following steps.

In step 301, the access network device determines a service type of the service data based on the feature information of the service data.

For the description of step 301, please refer to step 201a, and the description is omitted here.

When the service type of the service data is the first type, the access network device directly executes step 302b; alternatively, the access network device performs step 302a first and then step 302b second; alternatively, the access network device performs step 302a and step 302b simultaneously.

Step 302a, an access network device sends first indication information to a terminal device; accordingly, the terminal device receives the first indication information from the access network device.

The first indication information is used for indicating the terminal equipment to receive service data from the access network equipment through a first control channel. The explanation of the first control channel is referred to the related description in step 202, and is not repeated here. The first indication information may be carried in a medium access control (media access control control element, MAC Control Element, MAC CE) cell or a radio resource control (radio resource control, RRC) signaling cell or signaling, which is not limited herein.

Since the terminal device in the conventional art can receive only the first type of traffic data on the data channel, and the information received by the terminal device from the control channel is recognized as control information only by the terminal device. The access network device in this embodiment indicates, through the first indication information, the terminal device to receive the first type of service data through the first control channel, which is favorable for the terminal device to accurately receive the first type of service data in the first control information, and also can avoid the terminal device from misidentifying the first type of service data as control information, thereby being favorable for improving the efficiency of the access network device transmitting the first type of service data to the terminal device.

Optionally, the first indication information includes a time-frequency domain location of a first time-frequency resource located in the first control channel, and the first indication information is used for indicating the terminal device to receive the first type of service data on the first time-frequency resource. Optionally, the first time-frequency resource occupies at least one RB and occupies at least one symbol. The time-frequency domain position of the first time-frequency resource can be represented by an index of the RB and an index of the symbol.

It should be appreciated that the first indication information may not include the time-frequency domain location of the first time-frequency resource. When the first indication information does not include the time-frequency domain position of the first time-frequency resource, the terminal equipment and the access network equipment determine the first time-frequency resource occupied by the first control channel in a protocol agreed mode or in a pre-configured mode. At this time, the access network device only needs to instruct the terminal device to receive the first type of service data through the first control channel by using the first instruction information, and the terminal device can acquire the time-frequency domain position of the first time-frequency resource carrying the first control channel, so that the terminal device can receive the first type of service data on the first time-frequency resource.

Optionally, the first indication information further includes type information of the first control channel. Optionally, the first control channel is PDCCH. The type information of the first control channel is used to indicate the type of the PDCCH, and may also be understood as a format of DCI used to indicate the PDCCH. Illustratively, the type information of the first control channel includes format 2_0, indicating that the access network device instructs the terminal device to demodulate the first type of traffic data in the DCI in format 2_0.

It should be understood that the first indication information may not include type information of the first control channel. When the first indication information does not include the type information of the first control channel, the terminal equipment and the access network equipment determine the type information of the first control channel in a protocol agreed mode or in a preconfigured mode. At this time, the access network device only needs to instruct the terminal device to receive the first type of service data through the first control channel by using the first instruction information, and the terminal device can receive the first type of service data on the PDCCH in which format.

Optionally, the first indication information further includes modem information of the first time-frequency resource. The modulation and demodulation information is used for indicating a modulation and demodulation mode used by the first time-frequency resource. Optionally, the modem information includes 16QAM and/or 64QAM. Since the higher order modulation scheme (e.g., 16QAM or 64 QAM) has better spectral efficiency than the lower order modulation scheme (e.g., QPSK or BPSK) in the conventional art, it is advantageous to improve the efficiency of transmitting the first type of traffic data based on the first control channel.

It should be noted that step 302a is an optional step. When the access network device and the terminal device perform step 302a, step 302a and step 302b may be performed simultaneously, or the access network device performs step 302a first and then step 302b. When the access network device and the terminal device do not perform step 302a, the terminal device determines that the service data is the first type of service data, and the terminal device can determine the time-frequency domain position occupied by the first control channel without the indication of the first indication information, and demodulate the first type of service data according to a predefined modulation-demodulation mode at the time-frequency domain position occupied by the first control channel.

Step 302b, the access network device sends the first type of service data to the terminal device through a first control channel; accordingly, the terminal device receives service data from the access network device over the first control channel.

In this embodiment, the terminal device may determine, through a predefined manner of a protocol or the first indication information, a time-frequency domain location of a time-frequency resource occupied by a first control channel for transmitting the first type of service data. Therefore, when the access network device sends the service data of the first type to the terminal device through the first control channel, the terminal device can learn to receive the service data of the first type through the first control channel.

Optionally, the first control channel includes a physical downlink control channel PDCCH. Specifically, the access network device may use the format of the PDCCH existing in the conventional technology, or may use the format of the PDCCH newly defined in the present application. Specifically, please refer to the related description in the previous step 202, which is not repeated here.

Alternatively, when the access network device transmits the first type of service data to the plurality of terminal devices through the first control channel, the access network device may transmit the first type of service data to the respective terminal devices in the same time domain unit (e.g., the same transmission time interval (transmission time interval, TTI)). Because the access network equipment can adjust the sending time of the service data through the application layer, the access network equipment is beneficial to detecting the time delay of the data transmission.

Step 303a, the access network device sends second indication information to the terminal device; accordingly, the terminal device receives the second indication information from the access network device.

The second indication information is used for indicating the terminal equipment to send service data to the access network equipment through a second control channel. The explanation of the second control channel is referred to the related description in step 203, and is not repeated here. The second indication information may be carried in a cell or signaling such as a media access control cell MAC CE or a radio resource control RRC signaling, which is not limited herein.

Optionally, the second indication information includes a time-frequency domain location of a second time-frequency resource located in the second control channel, where the second indication information is used to instruct the terminal device to send the first type of service data on the second time-frequency resource. Optionally, the second time-frequency resource occupies at least one RB and occupies at least one symbol. The time-frequency domain position of the second time-frequency resource can be represented by an index of RB and an index of symbol.

It should be appreciated that the second indication information may not include the time-frequency domain location of the second time-frequency resource. And when the second indication information does not comprise the time-frequency domain position of the second time-frequency resource, the terminal equipment and the access network equipment determine the second time-frequency resource occupied by the second control channel in a protocol agreed mode or in a pre-configuration mode. At this time, the access network device only needs to instruct the terminal device to send the first type of service data through the second control channel by the second instruction information, and the terminal device can acquire the time-frequency domain position of the second time-frequency resource bearing the second control channel, so that the terminal device can send the first type of service data on the second time-frequency resource.

Optionally, the second indication information further includes type information of the second control channel. Optionally, the second control channel is PUCCH. The type information of the second control channel is used to indicate the type of the PUCCH, and may also be understood as a format of UCI used to indicate PUCCH usage. The type information of the second control channel includes, for example, format 3, indicating that the access network device instructs the terminal device to transmit the first type of traffic data on the PUCCH in format 3.

It should be understood that the second indication information may not include type information of the second control channel. When the second indication information does not include the type information of the second control channel, the terminal equipment and the access network equipment determine the type information of the second control channel in a protocol agreed mode or in a preconfigured mode. At this time, the access network device only needs to instruct the terminal device to send the first type of service data through the second control channel by using the second instruction information, and the terminal device can send the first type of service data on the PUCCH of which format.

Optionally, the second indication information further includes modem information of the second time-frequency resource. The modulation and demodulation information is used for indicating a modulation and demodulation mode used by the second time-frequency resource. Optionally, the modem information includes 16QAM and/or 64QAM. Since the higher order modulation scheme (e.g., 16QAM or 64 QAM) has better spectral efficiency than the lower order modulation scheme (e.g., QPSK or BPSK) in the conventional art, the spectral efficiency can be improved, which is advantageous for saving the spectrum resources.

It should be noted that step 303a is an optional step. When the access network device and the terminal device perform step 303a, step 303a and step 303b may be performed simultaneously, or the access network device performs step 303a first and then step 303b. When the access network device and the terminal device do not perform step 303a, the terminal device determines that the service data is the first type of service data, and the terminal device is capable of determining the time-frequency domain position occupied by the second control channel without the indication of the second indication information, and transmitting the first type of service data on the time-frequency domain position occupied by the second control channel.

Step 303b, the terminal device sends the first type of service data to the access network device through the second control channel; accordingly, the access network device receives the first type of traffic data from the terminal device over the second control channel.

In this embodiment, the terminal device can determine, through a predefined manner of a protocol or the aforementioned second indication information, a time-frequency domain location of a time-frequency resource occupied by a second control channel for transmitting the first type of service data.

Optionally, the second control channel includes a physical uplink control channel PUCCH. Specifically, the access network device may use the format of the PUCCH existing in the conventional technology, or may use the format of the PUCCH newly defined in the present application. Specifically, please refer to the related description in the step 203, which is not repeated here.

In one possible implementation, the terminal device may perform compression processing before sending the first type of traffic data. Specifically, the terminal device sends the first type of service data to the access network device through at least one data message carried on the second control channel. At least two first messages are encapsulated in a data message carrying the first type of service data, and the first messages are messages which are generated at an application layer and encapsulate the first type of service data. Optionally, the first message is a message generated in different reporting periods of the application layer and encapsulating the service data of the first type. Illustratively, in industrial control type communications, the first message is a periodic heartbeat message.

Optionally, when the terminal device sends the first type of service data to the access network device through at least two data messages carried on the second control channel, at least two data messages carrying the first type of service data are encapsulated with at least one identical first message. For example, there are at least two data packets having the same first packet, and there are at least two first packets having the same first packet encapsulated in different data packets.

Optionally, every two adjacent first messages are encapsulated in different data messages, and every two adjacent data messages are encapsulated with the same first message. The terminal device generates 5 first messages, which are respectively message 1, message 2, message 3, message 4 and message 5 according to the sequence of generating the messages by the terminal device. The terminal device then encapsulates each adjacent two or more messages into a data message. For example, the terminal device encapsulates the message 1 and the message 2 into a data message 1, encapsulates the message 2 and the message 3 into a data message 2, encapsulates the message 3 and the message 4 into a data message 3, and encapsulates the message 4 and the message 5 into a data message 4. And so on, through the message packaging mode, the terminal equipment can realize joint compression, so that each message sent by the terminal equipment has redundant transmission, thereby being beneficial to improving the success rate of decoding the message by the access network equipment, and further reducing the packet loss rate in the first type of data transmission process. In addition, the plurality of first messages are compressed, so that the number of the messages carried by the second control channel is improved, and the efficiency of transmitting the first type of service data to the access network equipment by the terminal equipment is improved.

In this embodiment, the access network device can instruct the terminal device to receive the first type of service data through the first control channel through the first indication information, and/or instruct the terminal device to send the first type of service data to the access network device through the second control channel through the second indication information. Therefore, the method is beneficial to reducing the time delay introduced by the terminal equipment when receiving and transmitting the service data and improving the efficiency of transmitting the service data of the first type.

Another embodiment of the data transmission method according to the present application will be described with reference to fig. 4. It should be appreciated that the embodiment corresponding to fig. 4 may be combined with the embodiment corresponding to fig. 2 or fig. 3 previously. In the corresponding embodiment of fig. 4, the access network device is capable of communicating with the first terminal device and the second terminal device. The first terminal device, the second terminal device and the access network device will perform the following steps, respectively:

in step 401, the access network device determines a channel correlation between the first terminal device and the second terminal device based on the first channel information and the second channel information.

Wherein the channel information is used to indicate characteristics of a link between the terminal device and the access network device over which data is transmitted. The channel information is related to the geographical position of the terminal equipment, the antenna angle of the terminal equipment, the movement speed of the terminal equipment, the movement direction of the terminal equipment and other factors. Wherein the first channel information is used for indicating the characteristic of a link between the first terminal device and the access network device for transmitting the first service data, and the second channel information is used for indicating the characteristic of a link between the second terminal device and the access network device for transmitting the second service data. In the application, the mode of the access network equipment for acquiring the channel information corresponding to the terminal equipment is not limited.

In addition, the channel correlation is used to indicate the spatial degree of freedom of the two signals or the spatial orthogonality of the two signals, and can reflect the interference degree of the two signals. Generally, the lower the channel correlation, the less interference between channels, and the more distant the geographic locations where the two terminal devices are located; the higher the channel correlation, the greater the interference between the channels, and the closer the geographic locations where the two terminal devices are located. In general, the smaller the correlation between channels, the more likely a multiple-input multiple-output (MIMO) mode is adopted for data transmission.

In step 402, when the channel correlation is higher than the third threshold, the access network device transmits the first service data and the second service data through one target beam.

Wherein the first service data refers to service data of a service transmitted between the first terminal device and the access network device. Optionally, the first service data is a first type of service data. The second service data refers to service data of a service transmitted between the second terminal device and the access network device. Optionally, the second service data is a first type of service data.

It should be appreciated that this first type of traffic data satisfies the following features.

In one possible implementation, the latency requirement of the first type of traffic is less than a first threshold.

In another possible implementation, the latency requirement of the first type of traffic is less than a first threshold and the reliability requirement of the first type of traffic is greater than a second threshold.

Optionally, the first threshold is less than or equal to 20ms and the second threshold is greater than or equal to 99.9%. Illustratively, the first type of data is ultra-high reliability ultra-low latency communication URLLC traffic data. For an explanation of the first type of service data, please refer to the related description in the previous step 202, which is not repeated here.

In addition, the third threshold may be specified by a protocol, may be manually preset, or may be calculated by a network device (for example, an access network device or a core network device), and the method for acquiring the third threshold is not limited in the present application.

When the channel correlation between the first terminal device and the second terminal device is higher than the third threshold value, the interference between the link corresponding to the first terminal device (i.e. the link between the first terminal device and the access network device for transmitting the first service data) and the link corresponding to the second terminal device (i.e. the link between the second terminal device and the access network device for transmitting the second service data) is larger, and the geographic position where the first terminal device is located is closer to the geographic position where the second terminal device is located. Therefore, the access network device is not suitable for transmitting service data to the first terminal device and the second terminal device in a space division multiplexing manner (i.e. using two beams of the same time-frequency resource located in different spatial directions). At this time, the access network device in this embodiment determines a target beam whose coverage includes the first terminal device and the second terminal device, and then, the access network device transmits the first service data and the second service data through the target beam. It may also be understood that the access network device sends the first service data and the second service data to the first terminal device and the second terminal device in a multicast manner.

Optionally, when the channel correlation between the first terminal device and the second terminal device is lower than the third threshold, the access network device sends the first service data to the first terminal device and sends the second service data to the second terminal device in a space division multiplexing mode.

Illustratively, as shown in fig. 5A, if the access network device is capable of acquiring the channel correlation between the terminal c and the terminal d, and the channel correlation between the terminal c and the terminal d is greater than the third threshold, the access network device sends service data (including the service data of the terminal c and the service data of the terminal d) to the terminal c and the terminal d through one target beam (i.e., the beam 1). If the access network device can acquire the channel correlation between the terminal a and the terminal b and the channel correlation between the terminal a and the terminal b is smaller than a third threshold, the access network device sends service data corresponding to each terminal to the terminal a and the terminal b through two beams respectively. For example, the access network device sends service data corresponding to terminal a through beam 2, and sends service data corresponding to terminal b through beam 3.

It should be noted that since the frequency band range of the target beam is determined, the target beam can be covered to the first terminal device and the second terminal device. Thus, the radio frequency signals received by the first terminal device and the second terminal device via the aforementioned target beam are identical. The first terminal device and the second terminal device need to convert the radio frequency signal into a digital signal, respectively, and then distinguish the first service data and the second service data based on the digital signal. Specifically, the first terminal device and the second terminal device may perform step 404a and step 404b, respectively; alternatively, the first terminal device and the second terminal device first receive the third indication information through step 403, and then execute step 404a and step 404b, respectively.

Step 403, the access network device sends third indication information to the first terminal device and the second terminal device; accordingly, the first terminal device and the second terminal device receive the third indication information from the access network device.

Step 403 is an optional step. When the access network device performs step 403, the access network device may perform step 402 and step 403 simultaneously, may perform step 402 first and then step 403, and may perform step 403 first and then step 402, which is not limited herein.

The third indication information is used for indicating bits occupied by the first service data and/or bits occupied by the second service data.

In one possible implementation, the third indication information includes bits occupied by the first service data. For example, the service data carried by the target beam is converted into a digital signal and then includes 30 bits of data, and if the third indication information is 1-10 bits, the service data representing 1-10 bits is the first service data.

In another possible implementation manner, the third indication information includes bits occupied by the second service data. For example, the service data carried by the target beam is converted into a digital signal and then includes 30 bits of data, and if the third indication information is 11-28 bits, the service data representing 11-28 bits is the second service data.

In another possible embodiment, the third indication information includes a bit occupied by the first service data and a bit occupied by the second service data. Optionally, the third indication information is a bit of a separator. For example, the service data carried by the target beam is converted into a digital signal and then includes 30 bits of data, and if the third indication information is 10 bits, the first 10 bits (i.e. 1-10 bits) are the first service data, and the second 20 bits (i.e. 11-30 bits) are the second service data.

It should be understood that, in practical application, the access network device may also represent the third indication information in other manners. In addition, when the access network device carries service data of at least three terminal devices in one target beam, the third indication information may also indicate bits occupied by service data transmitted by terminal devices such as a third terminal device and a fourth terminal device.

In step 404a, the first terminal device obtains the first service data carried on the target beam based on the bit occupied by the first service data.

In one possible embodiment, the bits occupied by the first service data may be pre-agreed by the first terminal device and the access network device.

If the first terminal device and the access network device agree that the first (N/2) bit of the N bits sent by the access network device is used to carry the first service data, the first terminal device receives the radio frequency signal corresponding to the target beam through the antenna, and converts the radio frequency signal into a digital signal, and then the first terminal device can directly obtain the first (N/2) bit of the digital signal to parse the first service data.

In another possible implementation manner, if the access network device and the first terminal device perform step 403, the bit occupied by the first service data is determined based on the third indication information. At this time, the first terminal device can determine the bit occupied by the first service data based on the third indication information.

In step 404b, the second terminal device obtains the second service data carried on the target beam based on the bit occupied by the second service data.

In one possible embodiment, the bits occupied by the second service data may be pre-agreed by the second terminal device and the access network device.

If the second terminal device and the access network device agree that the last (N/2) bit of the N bits sent by the access network device is used to carry the second service data, the second terminal device receives the radio frequency signal corresponding to the target beam through the antenna, and converts the radio frequency signal into a digital signal, and then the second terminal device can directly obtain the last (N/2) bit of the digital signal to parse the second service data.

In another possible implementation manner, if the access network device and the second terminal device perform step 403, the bit occupied by the second service data is determined based on the third indication information. At this time, the second terminal device can determine the bit occupied by the second service data based on the third indication information.

In this embodiment, the access network device may send the first service data and the second service data by using one target beam (i.e., send the first service data and the second service data by using a multicast manner) under a condition that a channel correlation between the first terminal device and the second terminal device is high. Because one target beam occupies, the method is beneficial to saving spectrum resources and improving the utilization rate of wireless resources.

Another embodiment of the data transmission method according to the present application will be described with reference to fig. 6. It should be appreciated that the embodiment corresponding to fig. 6 may be combined with the embodiment corresponding to fig. 2, 3 or 4 previously described. In the embodiment corresponding to fig. 6, the access network device is capable of communicating with a plurality of terminal devices (including the first terminal device and the second terminal device in the embodiment corresponding to fig. 4). Specifically, the access network device will perform the following steps, respectively:

In step 601, the access network device determines a channel correlation between any two terminal devices of the at least three terminal devices based on channel information of the at least three terminal devices.

For the explanation of the channel information and the channel correlation, please refer to the description of the correlation in the previous step 401, which is not repeated here.

In step 602, the access network device determines at least one multicast group based on channel correlation between any two terminal devices of the at least three terminal devices.

Wherein a multicast group comprises at least one terminal device, it is also understood that a multicast group is a collection of at least one terminal device configuration.

Optionally, the channel correlation between terminal devices located in the same multicast group is higher than a fourth threshold, and the channel correlation between terminal devices located in different multicast groups is lower than a fifth threshold. Wherein the fourth threshold is greater than the fifth threshold. It should be understood that the fourth threshold and the fifth threshold may be specified by a protocol, may be manually preset, or may be calculated by a network device (e.g., an access network device or a core network device), and the present application does not limit the manner in which the fourth threshold and the fifth threshold are obtained.

In one possible implementation, the access network device calculates a first channel correlation between a first terminal device and a second terminal device of the at least three terminal devices, and if the first channel correlation is greater than a fourth threshold, the access network device determines that the first terminal device and the second terminal device belong to a multicast group (hereinafter referred to as a first multicast group). Then, the access network device calculates a second channel correlation between a third terminal device and the first terminal device in at least three terminal devices, and if the second channel correlation is greater than a fourth threshold value, the access network device determines that the third terminal device also belongs to the multicast group (i.e., the first multicast group); if the second channel correlation is less than the fifth threshold, the access network device determines that the third terminal device does not belong to the aforementioned multicast group (i.e., the first multicast group). Optionally, the access network device divides the third terminal device into a second multicast group. And so on, the access network device divides the at least three terminal devices into at least one multicast group.

For example, as shown in fig. 5B, if the access network device can obtain channel information of the terminal a, the terminal B, the terminal c, the terminal d, and the terminal e, the access network device may calculate a channel correlation between any two terminals and determine a multicast group based on the channel correlation between each two terminals. If the channel correlation between the terminal a and the terminal e is greater than the fourth threshold, the access network device determines that the terminal a and the terminal e belong to one multicast group (referred to as multicast group 1). If the channel correlation between the terminal b and the terminal a is smaller than the fifth threshold, or if the channel correlation between the terminal b and the terminal e is smaller than the fifth threshold, the terminal b does not belong to the multicast group 1. If the channel correlation between terminal c and terminal d is greater than the fourth threshold, the access network device determines that terminal c and terminal d belong to a multicast group (referred to as multicast group 2). If the channel correlation between the terminal b and the terminal c is smaller than the fifth threshold, or if the channel correlation between the terminal b and the terminal d is smaller than the fifth threshold, the terminal b does not belong to the multicast group 2. Alternatively, the access network device may use terminal b as a multicast group.

Step 603, the access network device sends service data corresponding to the terminal device of each multicast group according to the multicast group.

Because of the high channel correlation between the terminal devices in the multicast group, each terminal device in one multicast group can receive service data through one beam from the access network device, i.e. the access network device sends the service data of the terminal devices in the same multicast group through one target beam. Also, since the channel correlation of the terminal device between different multicast groups is low, the access network device can transmit service data to different multicast groups through different beams.

For example, as shown in fig. 5B, if the terminal a and the terminal e belong to one multicast group, the access network device transmits service data corresponding to the terminal e and service data corresponding to the terminal a through one target beam (e.g., beam 4). And if the terminal c and the terminal d belong to a multicast group, the access network device sends the service data corresponding to the terminal c and the service data corresponding to the terminal d through one target beam (for example, beam 1). In addition, if the terminal b belongs to a multicast group, the access network device sends service data corresponding to the terminal b through a target beam (for example, beam 3). Wherein beam 1, beam 3 and beam 4 are respectively different beams.

In this embodiment, the access network device may divide the multicast groups based on channel correlations of multiple terminal devices, and then send service data of terminal devices located in the same multicast group through one target beam, and send service data of terminal devices located in different multicast groups through different target beams. Therefore, the method is beneficial to saving frequency spectrum resources and improving the utilization rate of wireless resources.

As shown in fig. 7, a schematic structural diagram of a communication device 70 according to the present embodiment is provided. It should be understood that the access network device in the foregoing method embodiments corresponding to fig. 2, 3, 4 or 6 may be based on the structure of the communication apparatus 70 shown in fig. 7 in this embodiment.

The communication device 70 comprises at least one processor 701, at least one memory 702, at least one transceiver 703, at least one network interface 705, and one or more antennas 704. The processor 701, the memory 702, the transceiver 703 and the network interface 705 are connected by connection means, and the antenna 704 is connected to the transceiver 703. The connection device may include various interfaces, transmission lines, buses, and the like, which are not limited in this embodiment.

The memory 702 is mainly used for storing software programs and data. The memory 702 may be separate and coupled to the processor 701. Alternatively, the memory 702 may be integrated with the processor 701, for example within one or more chips. The memory 702 is capable of storing program codes for implementing the technical solutions of the embodiments of the present application, and is controlled by the processor 701 to execute, and various types of executed computer program codes can also be regarded as drivers of the processor 701. It should be understood that fig. 7 in the present embodiment shows only one memory and one processor, but in practical application, the communication device 70 may have a plurality of processors or a plurality of memories, which is not limited herein. Further, the memory 702 may also be referred to as a storage medium or storage device or the like. Memory 702 may be a memory element on the same chip as the processor (i.e., an on-chip memory element) or a separate memory element, as embodiments of the present application are not limited in this regard.

In this embodiment, the transceiver 703 may be used to support the reception or transmission of radio frequency signals between the communication device 70 and the terminal equipment, and the transceiver 703 may be connected to the antenna 704. The transceiver 703 includes a transmitter Tx and a receiver Rx. Specifically, the one or more antennas 704 may receive radio frequency signals, and the receiver Rx of the transceiver 703 is configured to receive the radio frequency signals from the antennas 704, convert the radio frequency signals into digital baseband signals or digital intermediate frequency signals, and provide the digital baseband signals or digital intermediate frequency signals to the processor 701, so that the processor 701 performs further processing, such as demodulation processing and decoding processing, on the digital baseband signals or digital intermediate frequency signals. The transmitter Tx in the transceiver 703 is also operative to receive and convert modulated digital baseband signals or digital intermediate frequency signals from the processor 701 to radio frequency signals and transmit the radio frequency signals via the one or more antennas 704. Specifically, the receiver Rx may selectively perform one or more steps of down-mixing processing and analog-to-digital conversion processing on the radio frequency signal to obtain a digital baseband signal or a digital intermediate frequency signal, where the order of the down-mixing processing and the analog-to-digital conversion processing is adjustable. The transmitter Tx may selectively perform one or more stages of up-mixing processing and digital-to-analog conversion processing on the modulated digital baseband signal or the digital intermediate frequency signal to obtain a radio frequency signal, and the sequence of the up-mixing processing and the digital-to-analog conversion processing may be adjustable. The digital baseband signal and the digital intermediate frequency signal may be collectively referred to as a digital signal.

It should be appreciated that the aforementioned transceiver 703 may also be referred to as a transceiver unit, transceiver device, etc. Alternatively, a device for implementing a receiving function in the transceiver unit may be regarded as a receiving unit, and a device for implementing a transmitting function in the transceiver unit may be regarded as a transmitting unit, that is, the transceiver unit includes a receiving unit and a transmitting unit, where the receiving unit may also be referred to as a receiver, an input port, a receiving circuit, etc., and the transmitting unit may be referred to as a transmitter, or a transmitting circuit, etc.

In addition, the foregoing processor 701 is mainly used for processing communication protocols and communication data, and controlling the entire network device, executing software programs, and processing data of the software programs, for example, for supporting the communication apparatus 70 to perform the actions described in the foregoing embodiments. The communication device 70 may include a baseband processor that is primarily used to process communication protocols and communication data, and a central processor that is primarily used to control the entire communication device 70, execute software programs, and process data of the software programs. The functions of the baseband processor and the central processor may be integrated as the processor 701 in fig. 7, and those skilled in the art will appreciate that the baseband processor and the central processor may also be separate processors, interconnected by a bus or the like. Those skilled in the art will appreciate that the communication device 70 may include a plurality of baseband processors to accommodate different network formats, and that the communication device 70 may include a plurality of central processors to enhance its processing capabilities, and that the various components of the communication device 70 may be connected by various buses. The baseband processor may also be expressed as a baseband processing circuit or a baseband processing chip. The central processing unit may also be expressed as a central processing circuit or a central processing chip. The function of processing the communication protocol and the communication data may be built in the processor, or may be stored in a memory in the form of a software program, which is executed by the processor to realize the baseband processing function.

In addition, the aforementioned network interface 705 is used to enable the communication device 70 to connect with other communication devices through a communication link. In particular, the network interface 705 may comprise a network interface between the communication device 70 and a core network element, such as an S1 interface; the network interface 705 may also comprise a network interface, such as an X2 or Xn interface, between the communication device 70 and other network equipment, such as other access network equipment or core network elements.

When the communication device 70 is configured to perform the method in the foregoing corresponding embodiment of fig. 2 or fig. 3, the processor 701 is configured to determine a service type of service data to be transmitted; when the processor 701 determines that the service type of the service data is the first type, the processor 701 controls the transceiver 703 to transmit the first type of service data to the terminal device through the first control channel and/or to receive the first type of service data from the terminal device through the second control channel. Wherein the latency requirement of the first type of traffic is less than a first threshold.

In a possible implementation, the transceiver 703 is further configured to send first indication information to the terminal device, where the first indication information is configured to instruct the terminal device to receive the first type of service data from the access network device through the first control channel.

In a possible implementation, the transceiver 703 is further configured to send second indication information to the terminal device, where the second indication information is configured to instruct the terminal device to send the first type of service data to the access network device through the second control channel.

In a possible implementation, the transceiver 703 is further configured to receive service type information from the terminal device, and the processor 701 is further configured to determine a service type of the service data to be transmitted based on the received service type information. The service type information is used for indicating the service type of the service data.

In a possible implementation, the transceiver 703 is further configured to receive service type information from a core network device, and the processor 701 is further configured to determine a service type of the service data to be transmitted based on the received service type information. The service type information is used for indicating the service type of the service data.

In a possible implementation, the processor 701 is specifically configured to determine a service type of the service data based on the characteristic information of the service data.

When the communication device 70 is configured to perform the method in the foregoing corresponding embodiment of fig. 4 or fig. 6, the processor 701 is configured to determine a channel correlation between the first terminal device and the second terminal device based on the first channel information and the second channel information; when the processor 701 determines that the channel correlation is higher than the third threshold, the processor 701 controls the transceiver 703 to transmit the first traffic data and the second traffic data through one target beam.

In a possible implementation manner, the transceiver 703 is further configured to send third indication information to the terminal device, where the third indication information is used to indicate a bit occupied by the first service data and/or a bit occupied by the second service data.

In a possible implementation manner, the processor 701 is further configured to determine a channel correlation between any two terminal devices of the at least three terminal devices based on channel information of the at least three terminal devices; determining at least one multicast group based on the channel correlation between any two terminal devices in the at least three terminal devices, wherein the channel correlation between any two terminal devices in the same multicast group is higher than a fourth threshold value, and the channel correlation between any two terminal devices in different multicast groups is lower than a fifth threshold value; and controls the transceiver 703 to transmit the service data of the terminal devices located in the same multicast group through one target beam.

It should be noted that, the specific implementation and the beneficial effects of this embodiment may refer to the method of the access network device in the foregoing embodiment, which is not described herein again.

As shown in fig. 8, another communication device 80 according to the present embodiment is shown. It should be understood that the terminal device in the foregoing method embodiment corresponding to fig. 2, 3 or 4 may be based on the structure of the communication apparatus 80 shown in fig. 8 in this embodiment.

The communication device 80 comprises at least one processor 801, at least one memory 802 and at least one transceiver 803. Wherein the processor 801, the memory 802 and the transceiver 803 are connected. Optionally, the communication apparatus 80 may further comprise an input device 805, an output device 806 and one or more antennas 804. Wherein an antenna 804 is coupled to the transceiver 803, and an input device 805 and an output device 806 are coupled to the processor 801.

In this embodiment, the memory 802 is mainly used for storing software programs and data. The memory 802 may be separate and coupled to the processor 801. Alternatively, the memory 802 may be integrated with the processor 801, for example within one or more chips. The memory 802 is capable of storing program codes for implementing the technical solution of the embodiment of the present application, and is controlled to be executed by the processor 801, and various types of executed computer program codes can also be regarded as drivers of the processor 801. It should be understood that fig. 8 in the present embodiment shows only one memory and one processor, but in practical application, the communication device 80 may have a plurality of processors or a plurality of memories, which is not limited herein. Further, the memory 802 may also be referred to as a storage medium or a storage device, etc. Memory 802 may be a memory element on the same chip as the processor (i.e., an on-chip memory element) or a separate memory element, as embodiments of the application are not limited in this regard.

In this embodiment, the transceiver 803 may be used to support reception or transmission of radio frequency signals between the communication apparatus 80 and the access network device, and the transceiver 803 may be connected to the antenna 804. The transceiver 803 includes a transmitter Tx and a receiver Rx. Specifically, the one or more antennas 804 may receive radio frequency signals, and the receiver Rx of the transceiver 803 is configured to receive the radio frequency signals from the antennas 804, convert the radio frequency signals into digital baseband signals or digital intermediate frequency signals, and provide the digital baseband signals or digital intermediate frequency signals to the processor 801, so that the processor 801 performs further processing, such as demodulation processing and decoding processing, on the digital baseband signals or digital intermediate frequency signals. The transmitter Tx in the transceiver 803 is also operative to receive modulated digital baseband signals or digital intermediate frequency signals from the processor 801, to convert the modulated digital baseband signals or digital intermediate frequency signals to radio frequency signals, and to transmit the radio frequency signals via the one or more antennas 804. Specifically, the receiver Rx may selectively perform one or more steps of down-mixing processing and analog-to-digital conversion processing on the radio frequency signal to obtain a digital baseband signal or a digital intermediate frequency signal, where the order of the down-mixing processing and the analog-to-digital conversion processing is adjustable. The transmitter Tx may selectively perform one or more stages of up-mixing processing and digital-to-analog conversion processing on the modulated digital baseband signal or the digital intermediate frequency signal to obtain a radio frequency signal, and the sequence of the up-mixing processing and the digital-to-analog conversion processing may be adjustable. The digital baseband signal and the digital intermediate frequency signal may be collectively referred to as a digital signal.

It should be appreciated that the aforementioned transceiver 803 may also be referred to as a transceiver unit, transceiver device, etc. Alternatively, a device for implementing a receiving function in the transceiver unit may be regarded as a receiving unit, and a device for implementing a transmitting function in the transceiver unit may be regarded as a transmitting unit, that is, the transceiver unit includes a receiving unit and a transmitting unit, where the receiving unit may also be referred to as a receiver, an input port, a receiving circuit, etc., and the transmitting unit may be referred to as a transmitter, or a transmitting circuit, etc.

The processor 801 may be a baseband processor or a central processing unit (central processing unit, CPU), and the baseband processor and the CPU may be integrated or separated. The processor 801 may be used to implement various functions for the terminal device, for example, to process communication protocols and communication data, or to control the entire terminal device, execute software programs, and process data of the software programs; or to assist in completing computational processing tasks such as processing graphics images or audio, etc.; or the processor 801 may be configured to perform one or more of the functions described above.

In addition, the output device 806 communicates with the processor 801, and information may be displayed in a variety of ways, particularly without limitation.

Specifically, the processor 801 in the communication apparatus 80 is configured to determine a service type of service data to be transmitted. When the processor 801 determines that the traffic type of the traffic data is the first type, the control transceiver 803 receives the traffic data of the first type from the access network device through the first control channel and/or transmits the traffic data of the first type to the access network device through the second control channel. Wherein the latency requirement of the first type of traffic is less than a first threshold.

In a possible implementation, the transceiver 803 is further configured to receive first indication information from the access network device, where the first indication information is configured to instruct the terminal device to receive the first type of service data from the access network device through the first control channel.

In a possible implementation, the transceiver 803 is further configured to receive second indication information from the access network device, where the second indication information is configured to instruct the terminal device to send the first type of service data to the access network device through the second control channel.

It should be noted that, the specific implementation and the beneficial effects of the present embodiment may refer to the method of the terminal device in the foregoing embodiment, which is not described herein again.

In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in a processor or by instructions in the form of software. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in a hardware processor for execution, or in a combination of hardware and software modules in the processor for execution. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method. To avoid repetition, a detailed description is not provided herein.

Furthermore, the present application provides a computer program product comprising one or more computer instructions. When loaded and executed on a computer, produces a flow or function in accordance with embodiments of the application, in whole or in part. For example, the method associated with the access network device as in the previous figures 2, 3, 4 or 6 is implemented. As another example, the terminal device-related methods of fig. 2, 3 or 4 as described above are implemented. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be stored by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a digital versatile disk (digital versatile disc, DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), or the like.

Furthermore, the present application provides a computer readable storage medium storing a computer program for execution by a processor to implement a method as described above in connection with the access network device in fig. 2, 3, 4 or 6.

Furthermore, the present application provides a computer-readable storage medium storing a computer program to be executed by a processor to implement a method related to a terminal device as in the previous fig. 2, 3 or 4.

It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, which are not repeated herein.

The above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A data transmission method, comprising:

the access network equipment determines the service type of the service data to be transmitted;

and when the service type of the service data is a first type, the access network equipment sends the service data of the first type to the terminal equipment through a first control channel, and/or the access network equipment receives the service data of the first type from the terminal equipment through a second control channel, wherein the time delay requirement of the service of the first type is smaller than a first threshold value.

2. The method of claim 1, wherein the reliability requirement of the first type of traffic is greater than a second threshold.

3. The method according to claim 1 or 2, characterized in that the method further comprises:

the access network device sends first indication information to the terminal device, wherein the first indication information is used for indicating the terminal device to receive the first type of service data from the access network device through the first control channel.

4. The method of claim 3, wherein the first indication information includes a time-frequency domain location of a first time-frequency resource of the first control channel, and wherein the first indication information is used to instruct the terminal device to receive the first type of traffic data on the first time-frequency resource.

5. The method of claim 4, wherein the first indication information further comprises type information of the first control channel and/or modem information of the first time-frequency resource.

6. The method according to any one of claims 1 to 5, further comprising:

the access network device sends second indication information to the terminal device, wherein the second indication information is used for indicating the terminal device to send the first type of service data to the access network device through the second control channel.

7. The method of claim 6, wherein the second indication information includes a time-frequency domain location of a second time-frequency resource located on the second control channel, and wherein the second indication information is used to instruct the terminal device to transmit the first type of traffic data on the second time-frequency resource.

8. The method of claim 7, wherein the second indication information further comprises type information of the second control channel and/or modem information of the second time-frequency resource.

9. The method according to any of claims 1 to 8, wherein the access network device determining a traffic type of traffic data to be transmitted comprises:

The access network equipment receives service type information from the terminal equipment, wherein the service type information is used for indicating the service type of the service data;

or,

the access network equipment receives service type information from core network equipment, wherein the service type information is used for indicating the service type of the service data;

or,

the access network equipment determines the service type of the service data based on the characteristic information of the service data.

10. The method according to any one of claims 1 to 9, wherein at least two different first messages are encapsulated in one data message carrying the first type of service data, and at least one identical first message is encapsulated in at least two data messages carrying the first type of service data, and the first messages are messages generated at an application layer and encapsulating the first type of service data.

11. The method according to any of claims 1 to 10, wherein the terminal device comprises a first terminal device and a second terminal device;

the access network device sends the first type of service data to the terminal device through a first control channel, and the method comprises the following steps:

And the access network equipment sends the first type of service data through the first control channel according to the channel correlation between the first terminal equipment and the second terminal equipment.

12. The method of claim 11, wherein the access network device transmitting the first type of traffic data over the first control channel according to a channel correlation between the first terminal device and the second terminal device, comprising:

and when the channel correlation is greater than a third threshold, the access network equipment transmits the first service data of the first terminal equipment and the second service data of the second terminal equipment through a target beam, wherein the coverage area of the target beam comprises the first terminal equipment and the second terminal equipment.

13. The method according to claim 11 or 12, wherein the first terminal device and the second terminal device belong to the same multicast group, the channel correlation between terminal devices located in the same multicast group is higher than a fourth threshold, and the channel correlation between terminal devices located in different multicast groups is lower than a fifth threshold.

14. A data transmission method, comprising:

The terminal equipment determines the service type of the service data to be transmitted;

and when the service type of the service data is a first type, the terminal equipment receives the service data of the first type from the access network equipment through a first control channel, and/or the terminal equipment sends the service data of the first type to the access network equipment through a second control channel, wherein the time delay requirement of the service of the first type is smaller than a first threshold value.

15. The method of claim 14, wherein the reliability requirement of the first type of traffic is greater than a second threshold.

16. The method according to claim 14 or 15, characterized in that the method further comprises:

the terminal equipment receives first indication information from the access network equipment, wherein the first indication information is used for indicating the terminal equipment to receive the first type of service data from the access network equipment through the first control channel.

17. The method of claim 16, wherein the first indication information comprises a time-frequency domain location of a first time-frequency resource of the first control channel, the first indication information being used to indicate the terminal device to receive the first type of traffic data on the first time-frequency resource.

18. The method of claim 17, wherein the first indication information further comprises type information of the first control channel and/or modem information of the first time-frequency resource.

19. The method according to any one of claims 14 to 18, further comprising:

the terminal equipment receives second indication information from the access network equipment, wherein the second indication information is used for indicating the terminal equipment to send the first type of service data to the access network equipment through the second control channel.

20. The method of claim 19, wherein the second indication information includes a time-frequency domain location of a second time-frequency resource located on the second control channel, and wherein the second indication information is used to instruct the terminal device to transmit the first type of traffic data on the second time-frequency resource.

21. The method of claim 20, wherein the second indication information further comprises type information of the second control channel and/or modem information of the second time-frequency resource.

22. The method according to any one of claims 14 to 21, wherein at least two different first messages are encapsulated in one data message carrying the first type of service data, and at least one identical first message is encapsulated in at least two data messages carrying the first type of service data, and the first messages are messages generated at an application layer and encapsulating the first type of service data.

23. A communication device comprising a processor and a memory;

wherein the memory stores a computer program;

the processor invoking the computer program to cause the communication device to perform the method of any of claims 1 to 13.

24. A communication device comprising a processor and a memory;

wherein the memory stores a computer program;

the processor invoking the computer program to cause the communication device to perform the method of any of claims 14 to 22.

25. A communication system, comprising:

the communication device of claim 23 and the communication device of claim 24.

26. A computer readable storage medium storing instructions which, when run on a computer, cause the computer to perform the method of any one of claims 1 to 13 or to perform the method of any one of claims 14 to 22.