CN107105503B

CN107105503B - Data transmission method, communication equipment and system

Info

Publication number: CN107105503B
Application number: CN201610095094.4A
Authority: CN
Inventors: 王坚; 李榕; 乔云飞
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2016-02-19
Filing date: 2016-02-19
Publication date: 2021-09-14
Anticipated expiration: 2036-02-19
Also published as: CN107105503A; WO2017140194A1

Abstract

The embodiment of the invention discloses a data transmission method, communication equipment and a system, which are used for realizing coexistence of two communication modes on the basis of ensuring the utilization rate of time-frequency resources. The method provided by the embodiment of the invention comprises the following steps: the communication equipment acquires first data and second data, and determines a first communication mode for transmitting the first data and a second communication mode for transmitting the second data; selecting a first target transmission resource unit from a set of transmission resource units according to the first communication mode, and selecting a second target transmission resource unit from the set of transmission resource units according to the second communication mode; the first data is mapped to a first target transmission resource unit to obtain a first data frame, the first data frame is transmitted through a first communication mode, the second data is mapped to a second target transmission resource unit to obtain a second data frame, and the second data frame is transmitted through a second target communication mode.

Description

Data transmission method, communication equipment and system

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a data transmission method, a communication device, and a system.

Background

Device to Device (D2D) communication is a new communication technology introduced in Long Term Evolution (LTE) network architecture proposed by the 3rd Generation Partnership Project (3 GPP), which allows two terminals located relatively close to each other in a cellular network to communicate directly through a specific channel, and can improve system throughput, reduce system energy overhead, and enhance system coverage.

Fig. 1 is a schematic diagram of an application introducing D2D communication in a cellular network. After the cellular network introduced D2D communication, there was cellular communication and D2D communication in the cellular network. Among them, User Equipment (UE) 1, UE2, UE3 and UE4, such as UE1 and UE4, which implement D2D communication, directly transmit data without forwarding data through a base station. Cellular communication is achieved by the UE5 and the UE6, and when the UE5 transmits data to the UE6, the data is forwarded to the UE6 through the base station. Due to the simultaneous existence of cellular communication and D2D communication, if the cellular terminal and the D2D terminal perform data transmission through the same time-frequency resource, they will be interfered with each other, which makes it difficult for the cellular communication and the D2D communication to coexist (cannot simultaneously multiplex the time-frequency resource), and reduces the utilization rate of the time-frequency resource.

A common method for implementing coexistence of cellular communication and D2D communication is to control D2D communication and cellular communication to use different time-frequency resources to avoid mutual interference, which requires dividing the time-frequency resources of the whole cellular network into two completely orthogonal parts, one for D2D communication and the other for cellular communication, thereby ensuring the quality of cellular communication and D2D communication, and ensuring that no excessive interference is caused between cellular communication and D2D communication, and implementing coexistence of cellular communication and D2D communication. However, in this way, fixed time-frequency resources need to be divided for cellular communication and D2D communication, so that the time-frequency resources cannot be reused, and although coexistence of cellular communication and D2D communication is achieved, the utilization rate of the time-frequency resources is reduced, and time-frequency resource waste is caused.

Disclosure of Invention

The embodiment of the invention provides a data transmission method, communication equipment and a system, which are used for realizing coexistence of two communication modes on the basis of ensuring the utilization rate of time-frequency resources.

In view of this, a first aspect of the present invention provides a data transmission method, including:

for a communication device as a transmitting end, data may be transmitted based on a first communication mode and a second communication mode, first obtaining the first data and the second data, and determining that the first communication mode is used to transmit the first data and determining that the second communication mode is used to transmit the second data. The communication device selects a first target transmission resource unit for transmitting first data from a transmission resource unit set, and selects a second target transmission resource unit for transmitting second data from the transmission resource unit set, wherein the transmission resource unit set provided by the invention comprises a plurality of transmission resource units, each transmission resource unit comprises a time domain resource, a frequency domain resource and a coding resource, the coding resource is determined by a code domain resource and/or a pilot frequency resource, the coding resources of any two transmission resource units are different, and the provided second target transmission resource unit and the first target transmission resource unit are two different transmission resource units in the transmission resource unit set. Then, the communication device maps the first data to a first target transmission resource unit to obtain a first data frame, transmits the first data frame through a first communication mode, maps the second data to a second target transmission resource unit to obtain a second data frame, and transmits the second data frame through a second target communication mode.

It can be seen that, in the first aspect of the present invention, the communication device obtains the first data, determines the first communication mode for transmitting the first data, then selects the first target transmission resource unit from the transmission resource unit set, then maps the first data to the first target transmission resource unit, obtains the first data frame, and sends the first data frame through the first communication mode. Meanwhile, the communication device acquires the second data and determines a second communication mode for transmitting the second data, namely, the communication device provided by the invention realizes different communication modes and transmits data based on different transmission resource units. The coding resources are determined by the code domain resources and/or the pilot frequency resources, and the coding resources in every two transmission resource units are different, that is, the time domain resources and the frequency domain resources are not limited, so that the transmission data in the two communication modes can be on the same time frequency resources or different time frequency resources, so as to ensure the utilization rate of the time frequency resources, and meanwhile, different coding of the two transmission data is realized only by adopting different coding resources, so that the communication equipment realizes different communication modes and transmits data through different transmission resource units, and the coexistence of the two communication modes is realized.

Optionally, in some embodiments of the present invention, the communication device may be the same communication device, or may be two different communication devices, including a first communication device and a second communication device. In some embodiments of the present invention, when the communication device is a communication device, the communication device can transmit data in a first communication mode and a second communication mode simultaneously, and when a data frame is transmitted in the first communication mode, the first target transmission resource unit is utilized, and when a data frame is transmitted in the second communication mode, the second target transmission resource unit is utilized, so that when the same communication device communicates based on the two communication modes simultaneously, interference between the communication devices is not caused, and the communication device receiving the data frame can correctly demodulate the data frame in communication in different communication modes, thereby improving communication quality. In some embodiments of the present invention, when the communication device includes a first communication device and a second communication device, the first communication device transmits data by using a first target transmission resource unit based on a first communication mode, and the second communication device transmits data by using a second target transmission resource unit based on a second communication mode, so that two different communication devices can select different transmission resource units based on different communication modes in the same time-frequency resource or different time-frequency resources, so as to reduce interference between the two different transmission resource units, and enable the communication device receiving a data frame to correctly demodulate the data frame in communication in different communication modes, thereby improving communication quality.

Alternatively, the communication device, the first communication device and the second communication device may be mobile terminals, such as mobile phones, or so-called "cellular" phones, and computers with mobile terminals, e.g. portable, pocket, hand-held, computer-included or car-mounted mobile devices, which exchange language and/or data with a radio access network. Of course, the communication device, the first communication device and the second communication device may also be devices on the radio access network side, such as a base station (eNB).

Optionally, in some embodiments of the present invention, the different coding resources of any two of the transmission resource units include: the code domain resources in the coding resources of any two transmission resource units are different, or the pilot frequency resources in the coding resources of any two transmission resource units are different, or the code domain resources and the pilot frequency resources in the coding resources of any two transmission resource units are different.

Optionally, in some embodiments of the present invention, the first communication mode is D2D communication, and the second communication mode is cellular communication; or the first communication mode is cellular communication, the second communication mode is D2D communication.

Optionally, in some embodiments of the present invention, the selecting, by the communication device, a first target transmission resource unit from a set of transmission resource units according to the first communication mode, and selecting a second target transmission resource unit from the set of transmission resource units according to the second communication mode includes: the communication device selects the first target transmission resource unit from a first group of transmission resource units according to the first communication mode, and selects the second target transmission resource unit from a second group of transmission resource units according to the second communication mode, the set of transmission resource units includes the first group of transmission resource units and the second group of transmission resource units, the first group of transmission resource units includes a plurality of transmission resource units, the second group of transmission resource units includes a plurality of transmission resource units, and the first group of transmission resource units and the second group of transmission resource units are combined to obtain the set of transmission resource units. It can be seen that, since data transmission exists in two communication modes in the embodiment of the present invention, in order for a communication device receiving data to correctly recognize which communication mode is based on a data frame transmitted, in the embodiment of the present invention, transmission resource units in a transmission resource unit set are divided into two groups, which are a first group of transmission resource units and a second group of transmission resource units. It should be noted that the above-mentioned first group of transmission resource units and second group of transmission resource units are only defined for different combinations of transmission resource units, but not limited to that the first communication device uses the first group of transmission resource units and the second communication device uses the second group of transmission resource units, but the first group of transmission resource units may be set for use when the first communication mode is used for transmitting data, and the second group of transmission resource units is set for use when the second communication mode is used for transmitting data, correspondingly, when the communication device determines that the first data is transmitted based on the first communication mode, the communication device selects a first target transmission resource unit from the first group of transmission resource units, and when the communication device determines that the second data is transmitted based on the second communication mode, the communication device selects a second target transmission resource unit from the second group of transmission resource units. Conversely, when the communication device determines that the first data is transmitted based on the second communication mode, the communication device selects a first target transmission resource unit from the second set of transmission resource units, and when the communication device determines that the second data is transmitted based on the first communication mode, the communication device selects a second target transmission resource unit from the first set of transmission resource units.

Optionally, in some embodiments of the present invention, the communication device obtains a transmission resource unit grouping indication, where the transmission resource unit grouping indication is used to indicate that the set of transmission resource units includes the first group of transmission resource units and the second group of transmission resource units, the first group of transmission resource units is used for the first communication mode communication, and the second group of transmission resource units is used for the second communication mode communication. Specifically, how to group the transmission resource units in the transmission resource unit set in the embodiment of the present invention, the communication device on the radio access network side may obtain the notification transmission resource unit group indication in advance, for example, obtain the transmission resource unit group indication from the base station.

Optionally, in some embodiments of the present invention, how to perform grouping of transmission resource units in the transmission resource unit set may also be preset in the communication device according to a protocol.

Optionally, in some embodiments of the present invention, in addition to grouping the transmission resource units in the transmission resource unit set so that the communication device receiving the data frame can identify which communication mode the data frame is transmitted based on, the communication device may also carry an upper communication mode indication in the transmission data frame, so that it can determine which communication mode the data frame is transmitted based on according to the communication mode indication. Therefore, in the embodiment of the present invention, each of the first data frame and the second data frame includes a communication mode indication for indicating that the first data frame and the second data frame are transmitted based on the first communication mode or the second communication mode.

Optionally, in some embodiments of the present invention, the mapping the first data to the first target transmission resource unit by the communication device to obtain a first data frame, and transmitting the first data frame through the first communication mode includes: the communication device encodes the first data according to the encoding resource of the first target transmission resource unit to obtain the first data frame; the communication device calls time domain resources and frequency domain resources of the first target transmission resource unit to transmit the first data frame through the first communication mode; mapping the second data to the second target transmission resource unit to obtain a second data frame, wherein transmitting the second data frame in the second target communication mode includes: the communication device encodes the second data according to the encoding resource of the second target transmission resource unit to obtain the second data frame; and the communication equipment calls the time domain resource and the frequency domain resource of the second target transmission resource unit and transmits the second data frame through the second communication mode.

It can be understood that, the coding resource in the transmission resource unit provided in the embodiment of the present invention is determined by the code domain resource and/or the pilot resource, so that mapping the transmission data to the transmission resource unit specifically has three situations:

the first method comprises the following steps: in this embodiment of the present invention, the communication device first encodes the first data according to the code domain resource in the first target transmission resource unit to obtain the information portion in the first data frame, then obtains the frame header by another method to generate a complete first data frame, and then transmits the first data frame by using the time domain resource in the first target transmission resource unit. Similarly, the communication device encodes the second data according to the code domain resource in the second target transmission resource unit to obtain the information part in the second data frame, and then obtains the frame header in other ways to generate a complete second data frame, and then transmits the second data frame by using the time domain resource in the second target transmission resource unit.

And the second method comprises the following steps: in this embodiment of the present invention, the communication device obtains a pilot signal from the pilot resource in the first target transmission resource unit, then generates a first data frame according to the pilot signal and the first data, where the pilot signal is used as a header of the first data frame, and then transmits the first data frame using the time domain resource in the first target transmission resource unit. Similarly, the communication device obtains a pilot signal from a pilot resource in a second target transmission resource unit, generates a second data frame based on the pilot signal and second data, and transmits the second data frame using a time domain resource in the second target transmission resource unit.

And the third is that: the coding resource is determined by the code domain resource and the pilot frequency resource, the communication device codes the first data according to the code domain resource in the coding resource in the first target transmission resource unit to obtain the information part in the first data frame, then obtains the pilot frequency signal from the pilot frequency resource of the coding resource in the first target transmission resource unit, and generates the first data frame according to the obtained pilot frequency signal and the coded information part, and the pilot frequency signal is used as the frame head of the first data frame. Similarly, the communication device encodes the second data according to the code domain resource in the coding resource in the second target transmission resource unit to obtain the information part in the second data frame, then obtains the pilot signal from the pilot resource of the coding resource in the second target transmission resource unit, and generates the second data frame according to the obtained pilot signal and the encoded information part.

Since the first data frame includes the frame header and the information portion, if the first data frame carries the communication mode indication, the communication mode indication may be carried in the frame header or the information portion of the first data frame.

Optionally, the Code domain resource in the coding resource may be a codebook in Sparse Code Multiple Access (SCMA), or may also be a signature in Low Density Signature (LDS). The SCMA codebook specifies the mapping relation from information bits to time-frequency resource elements corresponding to the SCMA codebook, and different users use different codebooks to code. Likewise, the signature in the LDS is a signature of a user, different users using different signatures.

A second aspect of the present invention provides a data transmission method, which may include:

for a communication device as a receiving end, there is a method of simultaneously receiving a first data frame and a second data frame, and the first data frame is transmitted in a first communication mode and the second data frame is transmitted in a second communication mode. Firstly, the communication device determines a first target transmission resource unit for transmitting a first data frame and a second target transmission resource unit for transmitting a second data frame, then demodulates the first data frame according to the determined first target transmission resource unit to obtain first data, and demodulates the second data frame according to the determined second target transmission resource unit to obtain second data. In addition, in the embodiment of the present invention, the first communication mode for transmitting the first data frame may also be determined when the first target transmission resource unit is determined, and/or the first communication mode for transmitting the first data frame may be determined according to the demodulated first data. Likewise, a second communication mode for transmitting the second data frame is determined when determining the second target transmission resource unit, and/or the second communication mode for transmitting the second data frame is determined according to the demodulated second data.

It can be seen that, in the embodiment of the present invention, the communication device receives the data frames transmitted in two communication modes at the same time, and the data frames transmitted in different communication modes are transmitted through different transmission resource units, so that the communication device treats each data frame as a data frame to be demodulated, rather than simply treating the data frame as interference, thereby correctly demodulating the data frame transmitted in each communication mode, so as to reduce the error rate of data transmission and improve the transmission quality under the condition of the same signal-to-noise ratio.

In some embodiments of the present invention, since the communication device registers the first communication mode and the second communication mode, after demodulating the first data and the second data, the communication device delivers the first data to a protocol layer matching the first communication mode for further processing, and delivers the second data to a protocol layer matching the second communication mode for further processing. It should be noted that, if the communication device only registers the first communication mode, the communication device passes the first data to the protocol layer matching the first communication mode for further processing, and does not further process the second data. On the contrary, if the communication device only registers the second communication mode, the communication device delivers the second data to the protocol layer matched with the second communication mode for further processing, and does not further process the first data.

Optionally, in some embodiments of the present invention, the set of transmission resource units is divided into a first group of transmission resource units and a second group of transmission resource units, and the first group of transmission resource units is defined for a first communication mode and the second group of transmission resource units is defined for a second communication mode. The communication mode in which the data frame is transmitted is thus determined by the grouping of transmission resource units. Optionally, how to group the transmission resource units in the transmission resource unit set in the embodiment of the present invention may be determined and notified by an upper layer device of the communication device, for example, the transmission resource unit group indication may be acquired from the upper layer device.

Optionally, in other embodiments of the present invention, a communication mode indication may also be carried in the data frame, so as to indicate a target communication mode used for transmitting the data frame.

According to the two methods for identifying the communication mode adopted by the data frame transmission, the communication modes of demodulating the data frame and determining the data frame transmission also have a certain sequence, which specifically includes two conditions:

in the first case, the communication mode is identified by grouping transmission resource units. The communication device, upon determining the first target transmission resource unit for the first data frame, may then determine that the first target transmission resource unit belongs to the first group of transmission resource units, thereby determining that the first data frame is transmitted in the first communication mode. Likewise, when a second target transmission resource unit for a second data frame is determined, it may be determined that the second target transmission resource unit belongs to a second group of transmission resource units, thereby determining that the second data frame is transmitted in a second communication mode.

In the second case, the communication mode is indicated by carrying a communication mode indication in the data frame. The communication equipment demodulates the first data frame by the first target transmission resource unit of the first data frame to obtain first data, then obtains a communication mode indication from the first data, and finally determines a first communication mode for transmitting the first data frame according to the communication mode indication. Similarly, the communication device demodulates the second data frame by using the second target transmission resource unit of the second data frame to obtain second data, then obtains a communication mode indication from the second data, and finally determines a second communication mode for transmitting the second data frame according to the communication mode indication.

Optionally, since the data frame includes the frame header and the information part, the communication mode indication may be carried in the frame header of the data frame or carried in the information part of the data frame according to actual conditions.

Optionally, in some embodiments of the present invention, the first communication mode is cellular communication, and the second communication mode is D2D communication; or the first communication mode is D2D communication and the second communication mode is cellular communication.

The process of determining a target transmission resource unit according to a data frame is divided into the following three cases:

in the first case, the coding resources in the transmission resource unit are determined by the code domain resources. The communication equipment obtains time domain resources and frequency domain resources in the target transmission resource unit according to the time and the frequency of the data frame; secondly, in this case, the code domain resource is allocated by the system scheduling of the communication device, and the communication device determines the code domain resource in the target transmission resource unit according to the system scheduling information. And finally, obtaining the target transmission resource unit by the time domain resource, the frequency domain resource and the code domain resource.

In the second case, the coding resources in the transmission resource unit are determined by the pilot resources. The communication equipment obtains time domain resources and frequency domain resources in the target transmission resource unit according to the time and frequency for bearing the transmission data frame; next, the communication device detects the pilot portion of the data frame (e.g., if the pilot is an orthogonal sequence, then correlation can be used for detection), and determines the pilot resources. And finally, obtaining a target transmission resource unit from the time domain resource, the frequency domain resource and the pilot frequency resource.

In the third case, the coding resources in the transmission resource unit are determined by the pilot resources and the code domain resources. The communication equipment obtains time domain resources and frequency domain resources in the target transmission resource unit according to the time and the frequency of the first data frame; next, the communication device detects the pilot portion of the data frame (e.g., if the pilot is an orthogonal sequence, then correlation can be used for detection), and determines the pilot resources. And thirdly, determining the code domain resources according to the mapping relation between the pilot frequency resources and the code domain resources preset by the communication equipment. And finally, obtaining a target transmission resource unit by the time domain resource, the frequency domain resource, the pilot frequency resource and the code domain resource.

The data frame is demodulated by the following three demodulation modes:

the first method comprises the following steps: the coding resource is determined by the code domain resource, and the code domain resource of the target transmission resource unit is used for decoding the information part in the data frame to obtain the transmission data.

And the second method comprises the following steps: the code resources are determined by pilot resources. The communication equipment acquires the pilot frequency information from the frame head of the data frame so as to determine the pilot frequency resource, and then determines the target transmission resource unit according to the transmission resource unit set. And the transmission data is obtained from the information part in the data frame.

And the third is that: the coding resources are determined by code domain resources and pilot resources. The communication equipment decodes the information part in the data frame according to the code domain resource in the target transmission resource unit to obtain the transmission data.

It should be noted that the communication device may register the first communication mode, the second communication mode, or both the first communication mode and the second communication mode, and the communication device may receive the data frames sent by both the communication modes, where if the communication device only registers the first communication mode, the communication device will not process the transmission data demodulated from the data frame sent by the second communication mode, and if the communication device only registers the second communication mode, the communication device will not process the transmission data demodulated from the data frame sent by the first communication mode.

A third aspect of the present invention provides a communication device, which may include: the device comprises a processing module and a transmission module;

the processing module is used for acquiring first data and second data, determining a first communication mode for transmitting the first data and determining a second communication mode for transmitting the second data; selecting a first target transmission resource unit from a set of transmission resource units according to the first communication mode, and selecting a second target transmission resource unit from the set of transmission resource units according to the second communication mode; mapping the first data to the first target transmission resource unit to obtain a first data frame, and mapping the second data to the second target transmission resource unit to obtain a second data frame; the transmission module is used for transmitting the first data frame through the first communication mode and transmitting the second data frame through the second target communication mode.

Optionally, in some embodiments of the present invention, the processing module is specifically configured to select the first target transmission resource unit from a first group of transmission resource units according to the first communication mode, and select the second target transmission resource unit from a second group of transmission resource units according to the second communication mode, where the set of transmission resource units includes the first group of transmission resource units and the second group of transmission resource units, the first group of transmission resource units includes a plurality of transmission resource units, the second group of transmission resource units includes a plurality of transmission resource units, and the set of transmission resource units is obtained by combining the first group of transmission resource units and the second group of transmission resource units.

Optionally, in some embodiments of the present invention, the processing module is further configured to obtain a transmission resource unit grouping indication, where the transmission resource unit grouping indication is used to indicate that the set of transmission resource units includes the first group of transmission resource units and the second group of transmission resource units, the first group of transmission resource units is used for the first communication mode communication, and the second group of transmission resource units is used for the second communication mode communication.

Optionally, in some embodiments of the present invention, the first data frame and the second data frame carry a communication mode indication, where the communication mode indication is used to indicate a communication mode used for transmitting the first data frame or the second data frame.

Optionally, in some embodiments of the present invention, the communication device is a single communication device.

Optionally, in some embodiments of the present invention, the communication device includes a first communication device and a second communication device; the first communication device and the second communication device are independent two communication devices, each of which has its own processing module and transmission module, the processing module of the first communication device is configured to obtain first data, determine a first communication mode for transmitting the first data, select a first target transmission resource unit from a transmission resource unit set according to the first communication mode, map the first data to the first target transmission resource unit to obtain a first data frame, and transmit the first data frame through the first communication mode; the transmission module of the first communication device is configured to transmit the first data frame in the first communication mode. A processing module of the second communication device is configured to obtain second data, determine a second communication mode for transmitting the second data, select a second target transmission resource unit from the transmission resource unit set according to the second communication mode, and map the second data to the second target transmission resource unit to obtain a second data frame; the transmission module of the second communication device is configured to transmit the second data frame in the second target communication mode.

Optionally, in some embodiments of the present invention, the first communication mode is cellular communication, and the second communication mode is D2D communication; alternatively, the first communication mode is D2D communication, and the second communication mode is cellular communication.

A fourth aspect of the present invention provides a communication device, which may include: the device comprises a receiving module and a processing module;

the receiving module is used for receiving a first data frame and a second data frame; the processing module is configured to determine a first target transmission resource unit for transmitting the first data frame and determine a second target transmission resource unit for transmitting the second data frame, where the first target transmission resource unit and the second target transmission resource unit are two different transmission resource units in a transmission resource unit set, the transmission resource unit set includes multiple transmission resource units, each transmission resource unit includes a time domain resource, a frequency domain resource, and a coding resource, the coding resource is determined by a code domain resource and/or a pilot resource, and coding resources of any two transmission resource units are different; demodulating the first data frame according to the first target transmission resource unit to obtain first data, and determining a first communication mode for transmitting the first data frame according to the first data and/or the first target transmission resource unit; and demodulating the second data frame according to the second target transmission resource unit to obtain second data, and determining a second communication mode for transmitting the second data frame according to the second data and/or the second target transmission resource unit.

Optionally, in some embodiments of the present invention, the processing module is specifically configured to determine whether the first target transmission resource unit belongs to a first group of transmission resource units, and if the first target transmission resource unit belongs to the first group of transmission resource units, determine that a communication mode for transmitting the first data frame is a first communication mode; determining whether the second target transmission resource unit belongs to a second group of transmission resource units, and if the second target transmission resource unit belongs to the second group of transmission resource units, determining that a communication mode for transmitting the second data frame is a second communication mode; wherein the set of transmission resource units includes the first group of transmission resource units and the second group of transmission resource units, the first group of transmission resource units includes a plurality of transmission resource units, the second group of transmission resource units includes a plurality of transmission resource units, and the first group of transmission resource units and the second group of transmission resource units are combined to obtain the set of transmission resource units.

Optionally, in some embodiments of the present invention, the receiving module is further configured to obtain a transmission resource unit grouping indication, where the transmission resource unit grouping indication is used to indicate that the set of transmission resource units includes the first group of transmission resource units and the second group of transmission resource units, the first group of transmission resource units is used for the first communication mode communication, and the second group of transmission resource units is used for the second communication mode communication.

Optionally, in some embodiments of the present invention, the processing module is further specifically configured to obtain a communication mode indication from the first data, and determine, according to the communication mode indication obtained from the first data, that a communication mode used for transmitting the first data frame is a first communication mode; acquiring a communication mode indication from the second data, and determining that the communication mode for transmitting the second data frame is a second communication mode according to the communication mode indication acquired from the second data; the communication mode indication is used for indicating a communication mode adopted for transmitting the first data frame or the second data frame.

A fifth aspect of the present invention provides a data transmission system, which may include: the communication device provided by the third aspect, and the communication device provided by the fourth aspect.

A sixth aspect of the present invention provides a communication apparatus, which may include: a transceiver, a memory, and a processor; wherein, the memory is used for storing program instructions; the processor is used for calling the program instruction to execute the following processing: acquiring first data and second data, and determining a first communication mode for transmitting the first data and a second communication mode for transmitting the second data; selecting a first target transmission resource unit from a set of transmission resource units according to the first communication mode, and selecting a second target transmission resource unit from the set of transmission resource units according to the second communication mode, wherein the set of transmission resource units includes a plurality of transmission resource units, each transmission resource unit includes a time domain resource, a frequency domain resource and a coding resource, the coding resource is determined by a code domain resource and/or a pilot resource, the coding resources of any two transmission resource units are different, and the second target transmission resource unit is different from the first target transmission resource unit; mapping the first data to the first target transmission resource unit to obtain a first data frame, and mapping the second data to the second target transmission resource unit to obtain a second data frame; instructing the transceiver to transmit the first data frame via the first communication mode and the second data frame via the second target communication mode.

Optionally, in some embodiments of the present invention, the processor specifically executes the following processing: selecting the first target transmission resource unit from a first group of transmission resource units according to the first communication mode, and selecting the second target transmission resource unit from a second group of transmission resource units according to the second communication mode, wherein the transmission resource unit set comprises the first group of transmission resource units and the second group of transmission resource units, the first group of transmission resource units comprises a plurality of transmission resource units, the second group of transmission resource units comprises a plurality of transmission resource units, and the transmission resource unit set is obtained by combining the first group of transmission resource units and the second group of transmission resource units.

Optionally, in some embodiments of the present invention, the processor further performs the following processing: obtaining a transmission resource unit grouping indication, where the transmission resource unit grouping indication is used to indicate that the transmission resource unit set includes the first group of transmission resource units and the second group of transmission resource units, the first group of transmission resource units is used for the first communication mode communication, and the second group of transmission resource units is used for the second communication mode communication.

Optionally, in some embodiments of the present invention, the communication device includes a first communication device and a second communication device; the first communication device comprises a first transceiver, a first memory and a first processor connected by a bus, the first memory is used for storing program instructions, and the first processor is used for executing the program instructions stored in the memory; the first processor is further configured to obtain first data, determine a first communication mode for transmitting the first data, select a first target transmission resource unit from a set of transmission resource units according to the first communication mode, and map the first data to the first target transmission resource unit to obtain a first data frame; the first transceiver is configured to transmit the first data frame via the first communication mode; the second communication device comprises a second transceiver, a second memory and a second processor connected by a bus, the second memory is used for storing program instructions, and the second processor is used for executing the program instructions stored in the memory; the second processor is further configured to obtain second data, determine a second communication mode for transmitting the second data, select a second target transmission resource unit from the set of transmission resource units according to the second communication mode, and map the second data to the second target transmission resource unit to obtain a second data frame; the second transceiver is configured to transmit the second data frame in the second target communication mode.

Optionally, in some embodiments of the present invention, the first communication mode is cellular communication, and the second communication mode is D2D communication; alternatively, the first communication mode may be D2D communication, and the second communication mode may be cellular communication.

A seventh aspect of the present invention provides a communication apparatus, which may include: a transceiver, a memory, and a processor; wherein, the memory is used for storing program instructions; the processor is used for calling the program instruction to execute the following processing: instructing the transceiver to receive a first data frame and a second data frame; determining a first target transmission resource unit for transmitting the first data frame and a second target transmission resource unit for transmitting the second data frame, where the first target transmission resource unit and the second target transmission resource unit are two different transmission resource units in a transmission resource unit set, the transmission resource unit set includes a plurality of transmission resource units, each transmission resource unit includes a time domain resource, a frequency domain resource and a coding resource, the coding resource is determined by a code domain resource and/or a pilot frequency resource, and the coding resources of any two transmission resource units are different; demodulating the first data frame according to the first target transmission resource unit to obtain first data, and determining a first communication mode for transmitting the first data frame according to the first data and/or the first target transmission resource unit; and demodulating the second data frame according to the second target transmission resource unit to obtain second data, and determining a second communication mode for transmitting the second data frame according to the second data and/or the second target transmission resource unit.

Optionally, in some embodiments of the present invention, the processor specifically executes the following processing: judging whether the first target transmission resource unit belongs to a first group of transmission resource units, and if the first target transmission resource unit belongs to the first group of transmission resource units, determining that a communication mode for transmitting the first data frame is a first communication mode; determining whether the second target transmission resource unit belongs to a second group of transmission resource units, and if the second target transmission resource unit belongs to the second group of transmission resource units, determining that a communication mode for transmitting the second data frame is a second communication mode; wherein the set of transmission resource units includes the first group of transmission resource units and the second group of transmission resource units, the first group of transmission resource units includes a plurality of transmission resource units, the second group of transmission resource units includes a plurality of transmission resource units, and the first group of transmission resource units and the second group of transmission resource units are combined to obtain the set of transmission resource units.

Optionally, in some embodiments of the present invention, the processor specifically executes the following processing: acquiring a communication mode indication from the first data, and determining a communication mode for transmitting the first data frame as a first communication mode according to the communication mode indication acquired from the first data; acquiring a communication mode indication from the second data, and determining that the communication mode for transmitting the second data frame is a second communication mode according to the communication mode indication acquired from the second data; the communication mode indication is used for indicating a communication mode adopted for transmitting the first data frame or the second data frame.

An eighth aspect of the present invention provides a data transmission system, which may include: the communication device provided by the sixth aspect, and the communication device provided by the seventh aspect.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic diagram of an application introducing D2D communication in a cellular network;

fig. 2a is a schematic diagram of an application of introducing D2D communication in a cellular network according to an embodiment of the present invention;

fig. 2b is a schematic diagram of a transmission resource unit according to an embodiment of the present invention;

fig. 3a is a schematic application diagram of a data transmission method according to an embodiment of the present invention;

fig. 3b is a schematic diagram of a frame structure of a MAC PDU according to an embodiment of the present invention;

fig. 4a to 4b are schematic views of CTU partitioning according to some embodiments of the present invention;

FIGS. 4 c-4 d are schematic diagrams of encoding provided by some embodiments of the present invention;

fig. 5 is a schematic application diagram of a data transmission method according to another embodiment of the present invention;

fig. 6a is a schematic application diagram of a data transmission method according to another embodiment of the present invention;

fig. 6b is a schematic application diagram of a data transmission method according to another embodiment of the present invention;

fig. 7 is a schematic structural diagram of a communication device according to an embodiment of the present invention;

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

fig. 9a is a schematic structural diagram of a data transmission system according to an embodiment of the present invention;

fig. 9b is a block diagram of a part of a structure of a mobile phone related to a mobile terminal according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a base station according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by the person skilled in the art by means of the embodiments of the present invention without any inventive step are within the scope of the present invention.

The embodiment of the invention provides a data transmission method, which is used for realizing coexistence of two communication modes in one network on the basis of ensuring the utilization rate of time-frequency resources. The embodiment of the invention also correspondingly provides communication equipment and a data transmission system. The embodiment of the present invention may be applied to a cellular network introducing D2D communication, and certainly may also be applied to other networks capable of implementing two communication modes, and in the embodiment of the present invention, the present invention will be described in detail by taking the cellular network introducing D2D communication as an example.

Referring to fig. 2a, fig. 2a is a schematic diagram illustrating an application of introducing D2D communication in a cellular network according to an embodiment of the present invention. In fig. 2a, D2D communication is introduced in the cellular network, then D2D communication and cellular communication are present in the cellular network. Any UE may be registered as a D2D communication user or a cellular communication user, and certainly, the same UE may be registered as both a D2D communication user and a cellular communication user. In fig. 2a, UE1 is simultaneously registered as a D2D communication user and a cellular communication user, UE2 and UE3 are registered as D2D communication, and UE4 and UE5 are registered as cellular communication. The UE1 may be in D2D communication with the UE2 and may also be in cellular communication with a base station, although the UE1 may implement both D2D and cellular communication. UE2 and UE3 may be in D2D communication, and UE4 and UE5 may be in cellular communication.

In the following, with reference to fig. 2a, how to implement coexistence of D2D communication and cellular communication on the basis of ensuring utilization of time-frequency resources according to the embodiment of the present invention will be described in detail. Firstly, a transmission resource unit is defined in a three-dimensional space according to three variables of time domain resources, frequency domain resources and coding resources, and any two transmission resource units are different from each other. As shown in fig. 2b, fig. 2b is a schematic diagram of a transmission resource unit according to an embodiment of the present invention. In fig. 2b, the time domain resources are taken as the X-axis of the three-dimensional space coordinates, the frequency domain resources are taken as the Y-axis of the three-dimensional space coordinates, and the encoded resources are taken as the Z-axis of the three-dimensional space coordinates. The coding resources are determined by code domain resources and/or pilot frequency resources, and the coding resources are used for coding data. The Code domain resource is a resource of a Code space used for encoding data in the communication system, such as a codebook of Sparse Code Multiple Access (SCMA), a spreading Code word in CDMA, a signature in Low Density Signature (LDS), and the like. The pilot resource may also be referred to as a pilot signal, and is specifically used for pilot detection. In particular, one code domain resource may correspond to one set of pilot resources. In fig. 2b, if a certain coordinate point on the Z axis is taken as a fixed value, in all transmission resource units corresponding to the coordinate point, the coding resource is a fixed value, and at least one of the time domain resource and the frequency domain resource is taken as a variable, which may be regarded as the prior art, that is, the coexistence of D2D communication and cellular communication is realized by using different time domain resources, frequency domain resources, or time frequency resources, and will not be described in detail herein.

Therefore, in the embodiment of the present invention, coding resources are used as variations, and time-frequency resources are not limited as a discussion basis, that is, two different transmission resource units described in the embodiment of the present invention are formed at least because coding resources are different. Based on the above description of two different transmission resource units, in the embodiment of the present invention, coexistence of D2D communication and cellular communication is achieved, where different transmission resource units are mainly used when data is transmitted in different communication modes, that is, the transmission resource unit used in D2D communication and the transmission resource unit used in cellular communication are two different transmission resource units.

It should be noted that, in the embodiment of the present invention, different communication devices may transmit data through different communication modes at the same time, or the same communication device may transmit data through different communication modes at the same time. In connection with a communication device receiving data, the following communication scenarios can be divided:

a1, the first communication device and the second communication device are registered at least in the first communication mode, and the third communication device and the fourth communication device are registered at least in the second communication mode. Meanwhile, the first communication device transmits data with the second communication device through the first communication mode, and the third communication device transmits data with the fourth communication device through the second communication mode. Due to the broadcast nature of wireless communication, the second communication device receives data transmitted by the third communication device in addition to data transmitted by the first communication device, and likewise, the fourth communication device receives data transmitted by the first communication device in addition to data transmitted by the third communication device.

A2, the first communication device registers at least the first communication mode, the second communication device registers at least the second communication mode, and the third communication device registers both the first communication mode and the second communication mode. Meanwhile, the first communication device transmits data with the third communication device through the first communication mode, the second communication device transmits data with the third communication device through the second communication mode, and the third communication device receives the data transmitted by the first communication device and the data transmitted by the second communication device.

A3, the first communication device registers the first communication mode and the second communication mode at the same time, the second communication device registers at least the first communication mode, and the third communication device registers at least the second communication mode. Meanwhile, the first communication device transmits data with the second communication device through the first communication mode, the first communication device transmits data with the third communication device through the second communication mode, due to the broadcasting characteristic of wireless communication, the second communication device receives the data transmitted to the third communication device by the first communication device besides the data transmitted to the second communication device by the first communication device, and similarly, the third communication device receives the data transmitted to the second communication device by the first communication device besides the data transmitted to the third communication device by the first communication device.

Referring to fig. 3a, fig. 3a is a schematic flow chart of a data transmission method according to an embodiment of the present invention; as shown in fig. 3a, a data transmission method may include:

301. the first communication device acquires first data and determines a first communication mode for transmitting the first data. The second communication device acquires the second data and determines a second communication mode for transmitting the second data.

Wherein if the first communication mode is D2D communication, the second communication mode is cellular communication; on the contrary, if the first communication mode is cellular communication, the second communication mode is D2D communication.

It should be noted that in this embodiment, the first communication device and the second communication device are two different communication devices, and the first communication device and the second communication device perform data transmission simultaneously. The first and second communication devices may be UEs in fig. 2a, which may be mobile terminals such as mobile phones, or so-called "cellular" phones, and computers with mobile terminals, e.g. portable, pocket, hand-held, computer-included or car-mounted mobile devices, that exchange language and/or data with the radio access network. Of course, the first communication device and the second communication device may also be devices on the radio access network side, such as a base station (eNB).

It will be appreciated that in this embodiment the first communication device is at least registered as a user for using the first communication mode and the second communication device is at least registered as a user for using the second communication mode.

302. The first communication device selects a first target transmission resource unit from the transmission resource unit set, and the second communication device selects a second target transmission resource unit from the transmission resource unit set;

303. the first communication equipment maps the first data to the first target transmission resource unit to obtain a first data frame, and transmits the first data frame through the first communication mode. And the second communication equipment maps the second data to a second target transmission resource unit to obtain a second data frame, and transmits the second data frame through a second communication mode.

Wherein the first target transmission resource unit is different from the second target transmission resource unit.

It should be noted that the transmission resource unit set in the embodiment of the present invention includes the transmission resource unit introduced in fig. 2 b. The first target transmission resource unit selected by the first communication device and the second target transmission resource unit selected by the second communication device are two different transmission resource units, and the two different transmission resource units are at least embodied in that the coding resources thereof are different. Since the coding resources are determined by the code domain resources and/or the pilot frequency resources, the coding resources are different from each other in the code domain resources, or in the pilot frequency resources, or in both the code domain resources and the pilot frequency resources. In addition, since each code domain resource corresponds to a plurality of pilot resources, whether the pilot resources are different, the code domain resources are different, or the pilot resources and the code domain resources are different, it is indicated that the first communication device and the second communication device use different pilot resources.

In the embodiment of the present invention, when the first communication device selects the first target transmission resource unit and the second communication device selects the second target transmission resource unit, that is, the first communication mode and the second communication mode transmit data based on different transmission resource units at the same time. The coding resources are determined by code domain resources and pilot frequency resources, the coding resources in every two transmission resource units are different, that is, time domain resources and frequency domain resources are not limited, so that data transmission in two communication modes can be performed on the same time frequency resources or different time frequency resources, so as to ensure the utilization rate of the time frequency resources, and meanwhile, different numbering of the two transmission data is realized only by adopting different coding resources, so that the data transmission of the first communication device based on the first communication mode is completed, and meanwhile, the data transmission of the second communication device based on the second communication mode is completed.

And the second method comprises the following steps: in this embodiment of the present invention, the communication device obtains a pilot signal from the pilot resource in the first target transmission resource unit, then generates a first data frame according to the pilot signal and the first data, and then transmits the first data frame by using the time domain resource in the first target transmission resource unit. Similarly, the communication device obtains a pilot signal from a pilot resource in a second target transmission resource unit, generates a second data frame based on the pilot signal and second data, and transmits the second data frame using a time domain resource in the second target transmission resource unit.

And the third is that: the coding resource is determined by a code domain resource and a pilot frequency resource, the communication device codes the first data according to the code domain resource in the coding resource in the first target transmission resource unit to obtain an information part in the first data frame, then obtains a pilot frequency signal from the pilot frequency resource of the coding resource in the first target transmission resource unit, and generates the first data frame according to the obtained pilot frequency signal and the coded information part. Similarly, the communication device encodes the second data according to the code domain resource in the coding resource in the second target transmission resource unit to obtain the information part in the second data frame, then obtains the pilot signal from the pilot resource of the coding resource in the second target transmission resource unit, and generates the second data frame according to the obtained pilot signal and the encoded information part.

In the embodiment of the present invention, since the communication device may register the first communication mode and the second communication mode at the same time, the communication device receiving data must be able to recognize which communication mode the data is transmitted based on, and for this purpose, two ways are provided in the embodiment of the present invention:

in the first mode, the transmission resource unit set is divided into two groups, namely a first group of transmission resource units and a second group of transmission resource units. Wherein the first group of transmission resource units includes a part of transmission resource units, and the second group of transmission resource units includes another part of transmission resource units. The transmission resource units of the first set of transmission resource units and the transmission resource units of the second set of transmission resource units together constitute all transmission resource units of the set of transmission resource units. Of course, there will not be two identical transmission resource units in the first and second sets of transmission resource units. The first communication mode uses a first set of transmission resource units and the second communication mode uses a second set of transmission resource units. Based on such partitioning and limiting, a target transmission resource unit is selected from the first group of transmission resource units if data is transmitted via the first communication mode, and from the second group of transmission resource units if data is transmitted via the second communication mode. Therefore, in this embodiment of the present invention, if the first communication mode is the first communication mode, the first communication device selects the first target transmission resource unit from the first group of transmission resource units, and at this time, the second communication mode is the second communication mode, and the second communication device selects the second target transmission resource unit from the second group of transmission resource units. Otherwise, if the first communication mode is the second communication mode, the first communication device selects the first target transmission resource unit from the second group of transmission resource units, and at this time, the second communication mode is the first communication mode, and the second communication device selects the second target transmission resource unit from the first group of transmission resource units. It should be noted that the first target transmission resource unit and the second target transmission resource unit in the embodiment of the present invention are only meant to represent two different transmission resource units, and are not limited to a specific transmission resource unit.

Optionally, in an implementation manner, the division and the limitation of the transmission resource unit set may be notified by a communication device on the radio access network side sending a transmission resource unit grouping indication, where the transmission resource unit grouping indication indicates that the transmission resource unit set includes a first group of transmission resource units and a second group of transmission resource units, the first group of transmission resource units being used for communication in the first communication mode, and the second group of transmission resource units being used for communication in the second communication mode.

The communication device may be a mobile terminal or a computer with a mobile terminal, or may also be a radio access network side device, such as a base station (eNB). Therefore, if the first communication device and the second communication device are mobile terminals or computers with mobile terminals, the base station may broadcast signaling to all the mobile terminals or computers with mobile terminals in its coverage cell, where the broadcast signaling includes the transmission resource unit grouping indication. If the first communication device and the second communication device are radio access network side devices, such as a base station (eNB), etc., the first communication device and the second communication device have the capability to know which transmission resource units are used in the first communication mode and which transmission resource units are used in the second communication mode.

Optionally, in another implementation manner, the division and the definition of the transmission resource unit set may also be preset in the communication device in a protocol manner. Therefore, when the first communication device and the second communication device perform data transmission, the target transmission resource unit can be acquired from the transmission resource units of the corresponding packets.

And the second mode is that the data frame carries the communication mode indication. It can be understood that, since the D2D communication application is less extensive than the cellular communication application, if it is defined which transmission resource units are used by the D2D communication and the cellular communication, it may cause the transmission resource units defined for the D2D communication to be idle when there is no D2D communication, resulting in wasted transmission resources. Therefore, by adding a communication mode indication to the data frame to indicate whether the transmission is based on D2D communication or cellular communication, the utilization of the transmission resource units can be improved. For example, a communication mode indication is added to a Media Access Control (MAC) header of a Protocol Data Unit (PDU) of a MAC layer. Fig. 3b shows a PDU format of the MAC layer, which includes a MAC frame header and at least one MAC Service Data Unit (Service Data Unit, SDU for short), where the MAC frame header includes sub-headers equal to the number of MAC SDUs, and fig. 3b illustrates an example where the MAC PDU includes one MAC SDU and the MAC frame header includes one sub-header. The communication mode is indicated by adding "T" to the subheader of the MAC frame header, where T is 0 to indicate that the communication mode is D2D communication, and T is 1 to indicate that the communication mode is cellular communication. "R" is a reserved field of the MAC frame header, "E" is used to indicate whether the current MAC SDU is the last MAC SDU in the MAC PDU, "LCID" indicates the Identity (ID) of the logical channel, "L" indicates the length of the phase-shifted MAC SDU, and "F" indicates the length of the "L" field.

Optionally, the Code domain resource in the coding resource provided in the embodiment of the present invention may be a codebook in a Sparse Code Multiple Access (SCMA), or may also be a signature in a Low Density Signature (LDS). The SCMA codebook specifies the mapping relation of information bits to time-frequency resource elements of the SCMA codebook, and different users use different codebooks for coding. Likewise, the signature in the LDS is a signature of a user, different users using different signatures.

The Transmission resource Unit can be regarded as a Contention Transmission Unit (CTU), please refer to fig. 2b, where each CTU is defined by time domain resources, frequency domain resources, and codebook and/or pilot resources, and each CTU can be multiplexed by multiple users. The CTU is defined by four variables, i.e., time domain resource, frequency domain resource, codebook and pilot frequency resource, wherein the coding resource in fig. 2b is replaced by a codebook, each codebook corresponds to a pilot frequency resource set, if there are J codebooks, one pilot frequency set corresponding to each codebook has L pilot frequencies, the base station side identifies data from different users according to the pilot frequencies and completes channel estimation, so that the number of users that can be distinguished on each CTU is L J, and when a user randomly selects a pilot frequency resource, the codebook used by the user is determined accordingly. And the user carries out coding mapping on the information bits required to be sent by the user through the selected codebook, and finally, the obtained time-frequency resource elements are placed on the time-frequency resources in the CTU for transmission.

For example, in the CTU defined based on the SCMA, the pilot resources in the CTU are divided to implement the division of the CTU, including but not limited to the two division manners shown in fig. 4a and fig. 4b, where one codebook corresponds to L pilot resources, and J codebooks correspond to J × L pilot resources. In fig. 4a, some of the pilot resources are divided in each codebook for use by the communication devices of D2D communication, the pilot resource P11 in codebook C1, the pilot resource P21 in codebook C2, until the pilot resource PJ1 in codebook CJ is divided for use by the communication devices of D2D communication, and the rest of the pilot resources are used by the communication devices of cellular communication. In fig. 4b, all pilot resources in codebook division, i.e. some codebooks are divided for use by communication devices in D2D communication, for example, codebooks C1 and C2 are divided for use by communication devices in D2D communication, that is, all pilot resources in codebooks C1 and C2 are divided for use by communication devices in D2D communication, and the rest pilot resources are used by communication devices in cellular communication.

Based on the partitioning manner shown in fig. 4a, in a first application scenario, the CTUs corresponding to different pilot resources are selected for D2D communication and cellular communication, and the codebooks in the two CTUs are the same. For example, referring to fig. 4C, after D2D selects the CTU corresponding to the P11 pilot resource, C1 codebook is used to encode data, that is, data is mapped to the 1 st and 2 nd time-frequency resource elements of 4 time-frequency resource elements corresponding to SCMA codebook, the encoded data is added with the pilot signal provided in the pilot resource to obtain a data frame to be transmitted, and finally the data frame is mapped to the time-frequency resource formed by the time-domain resource and the frequency-domain resource in the selected CTU for transmission. After the cellular communication selects the CTU corresponding to the P12 pilot resource, since the codebook corresponding to the P12 pilot resource in the CTU is also C1, the C1 codebook is also used to encode data, and the data is also mapped to the 1 st time-frequency resource element and the 2 nd time-frequency resource element, but because the pilot resources are different, the D2D communication uses the P11 pilot resource to transmit the pilot signal, and the cellular communication uses the P12 pilot resource to transmit the pilot signal, so that the D2D communication and the cellular communication do not have interference on the pilot channel, and coexistence of the D2D communication and the cellular communication is realized.

In a second application scenario, the CTUs corresponding to different pilot resources are selected for D2D communication and cellular communication, and the codebooks in the two CTUs are different. For example, referring to fig. 4D, after D2D selects the CTU corresponding to the P11 pilot resource, C1 codebook is used to encode data, that is, data is mapped to the 1 st time-frequency resource element and the 2 nd time-frequency resource element of 4 time-frequency resource elements corresponding to SCMA codebook, the encoded data is added with the pilot signal provided in the pilot resource to obtain a data frame to be transmitted, and finally the data frame is mapped to the time-frequency resource formed by the time-domain resource and the frequency-domain resource in the selected CTU for transmission. After the cellular communication selects the CTU corresponding to the P31 pilot resource, since the codebook corresponding to the P31 pilot resource in the CTU is also C3, the C3 codebook is used to encode data, and the data is mapped to the 3rd time-frequency resource element and the 4 th time-frequency resource element in the SCMA, because the encoding mode is different and the pilot resource is different, the D2D communication uses the P11 pilot resource to transmit the pilot signal, and the cellular communication uses the P31 pilot resource to transmit the pilot signal, so that the D2D communication and the cellular communication do not have interference on the pilot channel, and the coexistence of the D2D communication and the cellular communication is realized.

Based on the division manner shown in fig. 4b, there are two application scenarios described above, which are not illustrated here, and reference may be made to the description of the two application scenarios.

Referring to fig. 5, fig. 5 is a schematic application diagram of a data transmission method according to another embodiment of the present invention. As shown in fig. 5, a data transmission method may include:

501. the communication equipment acquires first data and second data, and respectively determines a first communication mode for transmitting the first data and a second communication mode for transmitting the second data;

the difference from the embodiment shown in fig. 3a is that two different communication devices simultaneously perform data transmission through different communication modes, and coexistence is achieved by adopting different transmission resource units. The embodiment shown in fig. 5 is that the same communication device simultaneously performs data transmission through two communication modes, and also uses different transmission resource units to transmit data to achieve coexistence of the two communication modes.

The first communication mode and the second communication mode may be D2D communication or cellular communication, and refer to the above description specifically, and will not be described herein again.

502. The communication device obtains a first target transmission resource unit for transmitting first data from the set of transmission resource units and obtains a second target transmission resource unit for transmitting second data from the set of transmission resource units.

In this way, the communication device can obtain the first target transmission resource unit and the second target transmission resource unit to identify the communication mode by referring to the above description of grouping and defining the transmission resource unit sets. Or, please refer to the above description, which is not described herein again, for a specific example, the identification of the communication mode is realized by adding the communication mode indication to the data frame.

503. The communication equipment maps the first data to a first target transmission resource unit to obtain a first data frame, transmits the first data frame through a first communication mode, maps the second data to a second target transmission resource unit to obtain a second data frame, and transmits the second data frame through a second communication mode.

Therefore, the embodiment of the invention not only realizes the simultaneous communication of two communication modes on two different communication devices, but also realizes the simultaneous communication of two communication modes on the same communication device.

The present invention will be described in detail below starting from the receiving side.

Referring to fig. 6a, fig. 6a is a schematic flow chart of a data transmission method according to another embodiment of the present invention; as shown in fig. 6a, a data transmission method may include:

601. the communication equipment receives a first data frame and a second data frame;

it should be noted that, in the embodiment of the present invention, the communication device registers the first communication mode, or registers the second communication mode, or registers both the first communication mode and the second communication mode.

In the embodiment shown in fig. 6a, the communication device only registers the first communication mode as an example for explanation.

Although the communication apparatus has registered only the first communication mode, the communication apparatus may receive a second data frame transmitted in the second communication mode in addition to the first data frame transmitted in the first communication mode due to a broadcasting characteristic of wireless communication.

602. The communication equipment determines a first target transmission resource unit adopted by the first data frame according to the first data frame and determines a first communication mode for transmitting the first data frame; the communication equipment determines a second target transmission resource unit adopted for transmitting the second data frame and determines a second communication mode for transmitting the second data frame according to the second data frame;

it should be noted that, in the embodiment of the present invention, the set of transmission resource units is divided into a first group of transmission resource units and a second group of transmission resource units, and the first group of transmission resource units is defined for communication in the first communication mode, and the second group of transmission resource units is defined for communication in the second communication mode. Therefore, in step 602 of the embodiment of the present invention, when determining the first target transmission resource unit, the communication device may determine that the first target transmission resource unit belongs to the first group of transmission resource units, thereby determining that the communication mode for transmitting the first data frame is the first communication mode, and thus determining that the communication mode for transmitting the second data is the second communication mode.

603. The communication equipment demodulates the first data frame according to the first target transmission resource unit to obtain first data, and demodulates the second data frame according to the second target transmission resource unit to obtain second data;

it should be noted that, in the embodiment of the present invention, since the communication device only registers the first communication mode, theoretically, the communication device only needs to pay attention to the first data frame, but since the first data frame and the second data frame may be transmitted on the same time domain resource and frequency domain resource, when demodulating the data frame, the communication device cannot determine the first data frame matching the first communication mode through a simple time division or frequency division manner, and when the system uses a non-orthogonal modulation and demodulation manner, such as SCMA, LDS, etc., the communication device needs to perform joint demodulation on the first data frame and the second data frame, instead of simply taking the second data frame as interference, and performing joint demodulation is beneficial to obtain a lower error rate under the condition of the same signal-to-noise ratio, thereby improving transmission quality.

604. The communication device passes the first data to a protocol layer matching the first communication mode for further processing of the first data by the protocol layer matching the first communication mode. The second data may not be further processed.

Of course, in the embodiment of fig. 6a, only the communication device registering the first communication mode is taken as an example for explanation. In other embodiments of the present invention, the communication device registers the second communication mode, but does not register the first communication mode, so that the communication device hands the demodulated data corresponding to the second communication mode to the protocol layer matched with the second communication mode for further processing, and the data corresponding to the first communication mode may not be further processed. In other embodiments of the present invention, the communication device registers the first communication mode and the second communication mode, and then the communication device hands the demodulated data corresponding to the first communication mode to the protocol layer matched with the first communication mode for further processing, and hands the demodulated data corresponding to the second communication mode to the protocol layer matched with the second communication mode for further processing. The latter two cases will not be described in detail here.

In step 602, the determination of the target transmission resource unit used for transmitting the data frame according to the data frame is specifically divided into the following three cases:

In step 603, the demodulation process for the data frame is divided into the following three cases:

in the first case, the coding resources in the transmission resource unit are determined by the code domain resources. Demodulating the data frame by using the code domain resources in the determined target transmission resource unit;

in the second case, the coding resources in the transmission resource unit are determined by the pilot resources. And demodulating the data frame by using the demodulation mode corresponding to the pilot frequency resource in the determined target transmission resource unit. For example, if the pilot resource corresponds to a certain modulation and coding combination of data, the third communication device and the fourth communication device demodulate the data frame by using the corresponding modulation and coding scheme.

In the third case, the coding resources in the transmission resource unit are determined by the pilot resources and the code domain resources. And demodulating the data frame by using the code domain resource corresponding to the pilot frequency resource in the determined target transmission resource unit. For example, in the SCMA system, the pilot resource corresponds to an SCMA codebook used when a data frame is encoded, and the third communication device and the fourth communication device demodulate the data frame using the codebook.

It will be appreciated that in order to facilitate a communication device receiving data in embodiments of the present invention to be able to identify which communication mode the data is transmitted based on, different communication modes may be defined to use transmission resource units in different groups. Based on this way, in the embodiment of the present invention, the third communication device and the fourth communication device also store the transmission resource unit sets divided into the first group of transmission resource units and the second group of transmission resource units. For how to define the grouping, reference may be made to the above-described manner, which is not described herein again.

Referring to fig. 6b, fig. 6b is a schematic flowchart illustrating a data transmission method according to another embodiment of the present invention; as shown in fig. 6b, a data transmission method may include:

611. the communication equipment receives a first data frame and a second data frame;

referring to the description in step 601, the communication apparatus registers the first communication mode in this embodiment as an example.

612. The communication equipment determines a first target transmission resource unit adopted for transmitting the first data frame according to the first data frame, and determines a second target transmission resource unit adopted for transmitting the second data frame according to the second data frame;

it should be noted that, the difference from the embodiment shown in fig. 6a is that, in the embodiment of the present invention, a first communication mode for transmitting a first data frame and a second communication mode for transmitting a second data frame are indicated by carrying a communication mode indication in the data frame, and therefore, in the embodiment of the present invention, when determining target transmission resource units used by the first data frame and the second data frame, the communication mode for transmitting the first data frame and the second data frame cannot be determined.

Specifically, how to determine the first target transmission resource unit according to the first data frame and how to determine the second target transmission resource unit according to the second data frame in step 612 may refer to the detailed description in embodiment 6a, which is not described herein again.

613. The communication equipment demodulates the first data frame according to the first target transmission resource unit to obtain first data; demodulating the second data frame according to the second target transmission resource unit to obtain second data;

for how to demodulate the data frame after the communication device receives the data frame, please refer to the detailed description in embodiment 6a, which is not described herein again.

614. The communication equipment acquires a communication mode indication from the first data, and determines a first communication mode for transmitting the first data frame according to the communication mode indication acquired from the first data; acquiring a communication mode indication from the second data, and determining a second communication mode for transmitting the second data frame according to the communication mode indication acquired from the second data;

615. the communication device passes the first data to a protocol layer matching the first communication mode for further processing of the first data by the protocol layer matching the first communication mode. The second data may not be further processed.

It is understood that, in the embodiment of the present invention, the communication device registers the first communication mode, and in order to reduce the error rate during demodulation, although the first data frame and the second data frame are demodulated simultaneously, only the first data demodulated from the first data frame is finally required to be further processed, and the second data demodulated from the second data frame may not be further processed.

Referring to fig. 7, fig. 7 is a schematic structural diagram of a communication device according to an embodiment of the present invention; as shown in fig. 7, a communication device 700 may include:

a processing module 710, configured to obtain first data and second data, and determine a first communication mode for transmitting the first data and a second communication mode for transmitting the second data; selecting a first target transmission resource unit from a set of transmission resource units according to the first communication mode, and selecting a second target transmission resource unit from the set of transmission resource units according to the second communication mode; mapping the first data to the first target transmission resource unit to obtain a first data frame, and mapping the second data to the second target transmission resource unit to obtain a second data frame;

a transmission module 720, configured to transmit the first data frame in the first communication mode and transmit the second data frame in the second target communication mode.

Optionally, in some embodiments of the present invention, the processing module 710 is further configured to obtain a transmission resource unit grouping indication, where the transmission resource unit grouping indication is used to indicate that the set of transmission resource units includes the first group of transmission resource units and the second group of transmission resource units, the first group of transmission resource units is used for the first communication mode communication, and the second group of transmission resource units is used for the second communication mode communication.

Referring to fig. 8, fig. 8 is a schematic structural diagram of a communication device according to another embodiment of the present invention; as shown in fig. 8, a communication device 800 may include:

a receiving module 810, configured to receive a first data frame and a second data frame;

a processing module 820, configured to determine a first target transmission resource unit for transmitting the first data frame and determine a second target transmission resource unit for transmitting the second data frame, where the first target transmission resource unit and the second target transmission resource unit are two different transmission resource units in a transmission resource unit set, the transmission resource unit set includes a plurality of transmission resource units, each transmission resource unit includes a time domain resource, a frequency domain resource, and a coding resource, the coding resource is determined by a code domain resource and/or a pilot resource, and coding resources of any two transmission resource units are different; demodulating the first data frame according to the first target transmission resource unit to obtain first data, and determining a first communication mode for transmitting the first data frame according to the first data and/or the first target transmission resource unit; and demodulating the second data frame according to the second target transmission resource unit to obtain second data, and determining a second communication mode for transmitting the second data frame according to the second data and/or the second target transmission resource unit.

Optionally, in some embodiments of the present invention, the processing module 820 is specifically configured to determine whether the first target transmission resource unit belongs to a first group of transmission resource units, and if the first target transmission resource unit belongs to the first group of transmission resource units, determine that a communication mode for transmitting the first data frame is a first communication mode; determining whether the second target transmission resource unit belongs to a second group of transmission resource units, and if the second target transmission resource unit belongs to the second group of transmission resource units, determining that a communication mode for transmitting the second data frame is a second communication mode; wherein the set of transmission resource units includes the first group of transmission resource units and the second group of transmission resource units, the first group of transmission resource units includes a plurality of transmission resource units, the second group of transmission resource units includes a plurality of transmission resource units, and the first group of transmission resource units and the second group of transmission resource units are combined to obtain the set of transmission resource units.

Optionally, in some embodiments of the present invention, the receiving module 810 is further configured to obtain a transmission resource unit grouping indication, where the transmission resource unit grouping indication is used to indicate that the set of transmission resource units includes the first group of transmission resource units and the second group of transmission resource units, where the first group of transmission resource units is used for communication in the first communication mode, and the second group of transmission resource units is used for communication in the second communication mode.

Optionally, in some embodiments of the present invention, the processing module 820 is further specifically configured to obtain a communication mode indication from the first data, and determine, according to the communication mode indication obtained from the first data, that a communication mode used for transmitting the first data frame is a first communication mode; acquiring a communication mode indication from the second data, and determining that the communication mode for transmitting the second data frame is a second communication mode according to the communication mode indication acquired from the second data; the communication mode indication is used for indicating a communication mode adopted for transmitting the first data frame or the second data frame.

Referring to fig. 9a, fig. 9a is a schematic structural diagram of a data transmission system according to an embodiment of the present invention; as shown in fig. 9a, a data transmission system may include:

the communication device 700 shown in fig. 7, and the communication device 800 shown in fig. 8.

Please refer to the detailed descriptions of the communication device 700 and the communication device 800 in the above method embodiments and apparatus embodiments, and the detailed descriptions thereof are omitted here.

The communication device may be a mobile terminal or a base station, and the mobile terminal may be a mobile phone, which will be exemplified below.

Referring to fig. 9b, fig. 9b is a block diagram of a part of a structure of a mobile phone related to a mobile terminal according to an embodiment of the present invention. Referring to fig. 9b, the handset includes: radio Frequency (RF) circuit 910, memory 920, input unit 930, display unit 940, sensor 950, audio circuit 960, wireless fidelity (WiFi) module 970, processor 980, and power supply 990. Those skilled in the art will appreciate that the handset configuration shown in fig. 9b is not intended to be limiting and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.

The following describes each component of the mobile phone in detail with reference to fig. 9 b:

the RF circuit 910 may be used for receiving and transmitting signals during information transmission and reception or during a call, and in particular, for receiving downlink information of a base station and then processing the received downlink information to the processor 980; in addition, the data for designing uplink is transmitted to the base station. In general, the RF circuit 910 includes, but is not limited to, an antenna, at least one Amplifier, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like. In addition, the RF circuit 910 may also communicate with networks and other devices via wireless communication. The wireless communication may use any communication standard or protocol, including but not limited to Global System for Mobile communication (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), email, Short Messaging Service (SMS), and the like.

The memory 920 may be used to store software programs and modules, and the processor 980 may execute various functional applications and data processing of the mobile phone by operating the software programs and modules stored in the memory 920. The memory 920 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 920 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The input unit 930 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the cellular phone. Specifically, the input unit 930 may include a touch panel 931 and other input devices 932. The touch panel 931, also referred to as a touch screen, may collect a touch operation performed by a user on or near the touch panel 931 (e.g., a user's operation on or near the touch panel 931 using a finger, a stylus, or any other suitable object or accessory), and drive a corresponding connection device according to a preset program. Alternatively, the touch panel 931 may include two parts, a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 980, and can receive and execute commands sent by the processor 980. In addition, the touch panel 931 may be implemented by various types, such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. The input unit 930 may include other input devices 932 in addition to the touch panel 931. In particular, other input devices 932 may include, but are not limited to, one or more of a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like.

The display unit 940 may be used to display information input by the user or information provided to the user and various menus of the mobile phone. The Display unit 940 may include a Display panel 941, and optionally, the Display panel 941 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like. Further, the touch panel 931 may cover the display panel 941, and when the touch panel 931 detects a touch operation on or near the touch panel 931, the touch panel transmits the touch operation to the processor 980 to determine the type of the touch event, and then the processor 980 provides a corresponding visual output on the display panel 941 according to the type of the touch event. Although in fig. 9b, the touch panel 931 and the display panel 941 are two independent components to implement the input and output functions of the mobile phone, in some embodiments, the touch panel 931 and the display panel 941 may be integrated to implement the input and output functions of the mobile phone.

The handset may also include at least one sensor 950, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor may include an ambient light sensor that adjusts the brightness of the display panel 941 according to the brightness of ambient light, and a proximity sensor that turns off the display panel 941 and/or backlight when the mobile phone is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally, three axes), can detect the magnitude and direction of gravity when stationary, and can be used for applications of recognizing the posture of a mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer and tapping), and the like; as for other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which can be configured on the mobile phone, further description is omitted here.

Audio circuitry 960, speaker 961, microphone 962 may provide an audio interface between a user and a cell phone. The audio circuit 960 may transmit the electrical signal converted from the received audio data to the speaker 961, and convert the electrical signal into a sound signal for output by the speaker 961; on the other hand, the microphone 962 converts the collected sound signal into an electrical signal, converts the electrical signal into audio data after being received by the audio circuit 960, and outputs the audio data to the processor 980 for processing, and then transmits the audio data to, for example, another mobile phone through the RF circuit 910, or outputs the audio data to the memory 920 for further processing.

WiFi belongs to short-distance wireless transmission technology, and the mobile phone can help a user to receive and send e-mails, browse webpages, access streaming media and the like through the WiFi module 970, and provides wireless broadband Internet access for the user. Although fig. 9b shows the WiFi module 970, it is understood that it does not belong to the essential constitution of the handset and can be omitted entirely as needed within the scope not changing the essence of the invention.

The processor 980 is a control center of the mobile phone, connects various parts of the entire mobile phone by using various interfaces and lines, and performs various functions of the mobile phone and processes data by operating or executing software programs and/or modules stored in the memory 920 and calling data stored in the memory 920, thereby integrally monitoring the mobile phone. Alternatively, processor 980 may include one or more processing units; preferably, the processor 980 may integrate an application processor, which primarily handles operating systems, user interfaces, applications, etc., and a modem processor, which primarily handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 980.

The handset also includes a power supply 990 (e.g., a battery) for supplying power to the various components, which may preferably be logically connected to the processor 980 via a power management system, thereby providing management of charging, discharging, and power consumption via the power management system.

Although not shown, the mobile phone may further include a camera, a bluetooth module, etc., which are not described herein.

In the embodiment of the present invention, the processor 980 included in the mobile phone further has the following functions: acquiring first data and second data, and determining a first communication mode for transmitting the first data and a second communication mode for transmitting the second data; selecting a first target transmission resource unit from a set of transmission resource units according to the first communication mode, and selecting a second target transmission resource unit from the set of transmission resource units according to the second communication mode, wherein the set of transmission resource units includes a plurality of transmission resource units, each transmission resource unit includes a time domain resource, a frequency domain resource and a coding resource, the coding resource is determined by a code domain resource and/or a pilot resource, the coding resources of any two transmission resource units are different, and the second target transmission resource unit is different from the first target transmission resource unit; mapping the first data to the first target transmission resource unit to obtain a first data frame, and mapping the second data to the second target transmission resource unit to obtain a second data frame;

the RF circuit 910 is configured to transmit the first data frame in the first communication mode and transmit the second data frame in the second target communication mode.

Optionally, in some embodiments of the present invention, the processor 980 is specifically configured to select the first target transmission resource unit from a first group of transmission resource units according to the first communication mode, and select the second target transmission resource unit from a second group of transmission resource units according to the second communication mode, where the set of transmission resource units includes the first group of transmission resource units and the second group of transmission resource units, the first group of transmission resource units includes a plurality of transmission resource units, the second group of transmission resource units includes a plurality of transmission resource units, and the first group of transmission resource units and the second group of transmission resource units are combined to obtain the set of transmission resource units.

Optionally, in some embodiments of the present invention, the processor 980 is further configured to obtain a transmission resource unit grouping indication, where the transmission resource unit grouping indication is used to indicate that the set of transmission resource units includes the first group of transmission resource units and the second group of transmission resource units, the first group of transmission resource units is used for the first communication mode communication, and the second group of transmission resource units is used for the second communication mode communication.

In the embodiment of the present invention, the RF circuit 910 included in the mobile phone further has the following functions: the system comprises a data frame and a target transmission resource unit, wherein the data frame is obtained by mapping transmission data onto the target transmission resource unit, the target transmission resource unit is a transmission resource unit in a transmission resource unit set, the transmission resource unit set comprises a plurality of transmission resource units, each transmission resource unit comprises a time domain resource, a frequency domain resource and a coding resource, the coding resource is determined by a code domain resource and a pilot frequency resource, and the coding resources of any two transmission resource units are different;

the processor 980 is further configured to determine the target transmission resource unit for transmitting the data frame according to the data frame; and according to the transmission data and/or the target transmission resource unit, determining a target communication mode for transmitting the data frame, wherein the target communication mode is a first communication mode or a second communication mode.

Optionally, in some embodiments of the present invention, the processor 980 is specifically configured to determine that a target communication mode for transmitting the data frame is a first communication mode if it is determined that the target transmission resource unit belongs to a first group of transmission resource units; determining a target communication mode for transmitting the data frame as a second communication mode if the target transmission resource unit is determined to belong to a second group of transmission resource units; the transmission resource unit set includes the first group of transmission resource units and the second group of transmission resource units, the first group of transmission resource units includes a plurality of transmission resource units, the second group of transmission resource units includes a plurality of transmission resource units, and the transmission resource unit set is obtained by combining the first group of transmission resource units and the second group of transmission resource units.

Optionally, in some embodiments of the present invention, the processor 980 is further specifically configured to obtain a communication mode indication from the data frame, where the communication mode indication is used to indicate that the target communication mode for transmitting the data frame is the first communication mode or the second communication mode.

Optionally, in some embodiments of the present invention, the first communication mode is cellular communication or device-to-device D2D communication, and the second communication mode is cellular communication or D2D communication; if the first communication mode is cellular communication, the second communication mode is D2D communication; if the first communication mode is D2D communication, the second communication mode is cellular communication.

Referring to fig. 10, fig. 10 is a schematic structural diagram of a base station according to an embodiment of the present invention, wherein the base station 1000 may include at least one processor 1001 (for example, a CPU), at least one network interface or other communication interface, a memory 1002, a transceiver 1003, and at least one communication bus, which are used for implementing connection communication between these devices. The processor 1001 is used to execute executable modules, such as computer program instructions, stored in the memory 1002. The memory 1002 may comprise high-speed Random Access Memory (RAM), and may further comprise non-volatile memory (non-volatile memory), such as at least one disk memory. The communication connection between the system gateway and at least one other network element is realized through at least one network interface (which can be wired or wireless), and the internet, a wide area network, a local network, a metropolitan area network and the like can be used.

As shown in fig. 10, in some embodiments, the memory 1002 stores program instructions, and the program instructions can be executed by the processor 1001, and the processor 1001 specifically executes the following steps: acquiring first data and second data, and determining a first communication mode for transmitting the first data and a second communication mode for transmitting the second data; selecting a first target transmission resource unit from a set of transmission resource units according to the first communication mode, and selecting a second target transmission resource unit from the set of transmission resource units according to the second communication mode, wherein the set of transmission resource units includes a plurality of transmission resource units, each transmission resource unit includes a time domain resource, a frequency domain resource and a coding resource, the coding resource is determined by a code domain resource and/or a pilot resource, the coding resources of any two transmission resource units are different, and the second target transmission resource unit is different from the first target transmission resource unit; mapping the first data to the first target transmission resource unit to obtain a first data frame, and mapping the second data to the second target transmission resource unit to obtain a second data frame;

the transceiver 1003 is configured to transmit the first data frame in the first communication mode and transmit the second data frame in the second target communication mode.

Optionally, in some embodiments of the present invention, the processor 1001 is specifically configured to select the first target transmission resource unit from a first group of transmission resource units according to the first communication mode, and select the second target transmission resource unit from a second group of transmission resource units according to the second communication mode, where the set of transmission resource units includes the first group of transmission resource units and the second group of transmission resource units, the first group of transmission resource units includes a plurality of transmission resource units, the second group of transmission resource units includes a plurality of transmission resource units, and the first group of transmission resource units and the second group of transmission resource units are combined to obtain the set of transmission resource units.

Optionally, in some embodiments of the present invention, the processor 1001 is further configured to obtain a transmission resource unit grouping indication, where the transmission resource unit grouping indication is used to indicate that the set of transmission resource units includes the first group of transmission resource units and the second group of transmission resource units, the first group of transmission resource units is used for the first communication mode communication, and the second group of transmission resource units is used for the second communication mode communication.

In some embodiments, the memory 1002 stores program instructions, which are executable by the processor 1001, and the transceiver 1003 is further configured to receive a data frame, where the data frame is obtained by mapping transmission data onto a target transmission resource unit, the target transmission resource unit is a transmission resource unit in a transmission resource unit set, the transmission resource unit set includes a plurality of transmission resource units, each transmission resource unit includes a time domain resource, a frequency domain resource, and a coding resource, the coding resource is determined by a code domain resource and a pilot resource, and coding resources of any two transmission resource units are different;

the processor 1001 specifically executes the following steps: determining the target transmission resource unit for transmitting the data frame according to the data frame; and according to the transmission data and/or the target transmission resource unit, determining a target communication mode for transmitting the data frame, wherein the target communication mode is a first communication mode or a second communication mode.

Optionally, in some embodiments of the present invention, the processor 1001 is specifically configured to determine that a target communication mode for transmitting the data frame is a first communication mode if it is determined that the target transmission resource unit belongs to a first group of transmission resource units; determining a target communication mode for transmitting the data frame as a second communication mode if the target transmission resource unit is determined to belong to a second group of transmission resource units; the transmission resource unit set includes the first group of transmission resource units and the second group of transmission resource units, the first group of transmission resource units includes a plurality of transmission resource units, the second group of transmission resource units includes a plurality of transmission resource units, and the transmission resource unit set is obtained by combining the first group of transmission resource units and the second group of transmission resource units.

Optionally, in some embodiments of the present invention, the processor 1001 is further specifically configured to acquire a communication mode indication from the data frame, where the communication mode indication is used to indicate that the target communication mode for transmitting the data frame is the first communication mode or the second communication mode.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

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

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. It should be understood that the technical solution of the present invention, which is a part of or contributes to the prior art in essence, or all or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

While the method, the communication device and the system for data transmission provided by the present invention have been described in detail, for those skilled in the art, according to the idea of the embodiment of the present invention, the specific implementation manner and the application scope may be changed, and in summary, the content of the present description should not be construed as limiting the present invention.

Claims

1. A method of data transmission, comprising:

the communication equipment acquires first data and second data, and determines a first communication mode for transmitting the first data and a second communication mode for transmitting the second data; the first communication mode is cellular communication and the second communication mode is D2D communication; or the first communication mode is D2D communication and the second communication mode is cellular communication;

the communication device selecting a first target transmission resource unit from a first set of transmission resource units according to the first communication mode and selecting a second target transmission resource unit from a second set of transmission resource units according to the second communication mode, the set of transmission resource units comprising the first set of transmission resource units and the second set of transmission resource units, the first set of transmission resource units comprising a plurality of transmission resource units and the second set of transmission resource units comprising a plurality of transmission resource units, the first set of transmission resource units and the second set of transmission resource units combining to obtain the set of transmission resource units, wherein the set of transmission resource units comprises a plurality of transmission resource units, each transmission resource unit comprising a time domain resource, a frequency domain resource and a coding resource, the coding resource being determined by a code domain resource and/or a pilot resource, the coding resources of any two transmission resource units are different, and the second target transmission resource unit is different from the first target transmission resource unit;

the communication device maps the first data to the first target transmission resource unit to obtain a first data frame, transmits the first data frame through the first communication mode, maps the second data to the second target transmission resource unit to obtain a second data frame, and transmits the second data frame through the second communication mode.

2. The method of claim 1, further comprising: prior to the communication device acquiring the first data and the second data,

the communication device obtains a transmission resource unit grouping indication, which is used for indicating that the transmission resource unit set comprises the first group of transmission resource units and the second group of transmission resource units, wherein the first group of transmission resource units is used for the first communication mode communication, and the second group of transmission resource units is used for the second communication mode communication.

3. The method according to claim 1, wherein the first data frame and the second data frame carry a communication mode indication, and the communication mode indication is used to indicate a communication mode adopted for transmitting the first data frame or the second data frame.

4. A method of data transmission, comprising:

the communication equipment receives a first data frame and a second data frame;

the communication device determines a first target transmission resource unit for transmitting the first data frame and a second target transmission resource unit for transmitting the second data frame, where the first target transmission resource unit and the second target transmission resource unit are two different transmission resource units in a transmission resource unit set, the transmission resource unit set includes multiple transmission resource units, each transmission resource unit includes a time domain resource, a frequency domain resource and a coding resource, the coding resource is determined by a code domain resource and/or a pilot frequency resource, and the coding resources of any two transmission resource units are different;

the communication device demodulates the first data frame according to the first target transmission resource unit to obtain first data, and judges whether the first target transmission resource unit belongs to a first group of transmission resource units, if so, the communication mode for transmitting the first data frame is determined to be a first communication mode; demodulating the second data frame according to the second target transmission resource unit to obtain second data, and determining, by the communication device, whether the second target transmission resource unit belongs to a second group of transmission resource units, and if the second target transmission resource unit belongs to the second group of transmission resource units, determining that a communication mode for transmitting the second data frame is a second communication mode; wherein the set of transmission resource units comprises the first group of transmission resource units and the second group of transmission resource units, the first group of transmission resource units comprises a plurality of transmission resource units, the second group of transmission resource units comprises a plurality of transmission resource units, and the first group of transmission resource units and the second group of transmission resource units are combined to obtain the set of transmission resource units; the first communication mode is cellular communication, and the second communication mode is D2D communication; or the first communication mode is D2D communication and the second communication mode is cellular communication.

5. The method of claim 4, wherein prior to the communication device receiving the first data frame and the second data frame, the method further comprises:

6. The method of claim 5, wherein determining the first communication mode for transmitting the first data frame based on the first data comprises:

the communication equipment acquires a communication mode indication from the first data, and determines a communication mode for transmitting the first data frame as a first communication mode according to the communication mode indication acquired from the first data;

the determining a second communication mode for transmitting the second data frame according to the second data includes:

the communication equipment acquires a communication mode indication from the second data, and determines that the communication mode for transmitting the second data frame is a second communication mode according to the communication mode indication acquired from the second data;

the communication mode indication is used for indicating a communication mode adopted for transmitting the first data frame or the second data frame.

7. A communication device, comprising:

a transceiver, a memory, and a processor;

wherein the memory is to store program instructions;

the processor is used for calling the program instruction to execute the following processing;

acquiring first data and second data, and determining a first communication mode for transmitting the first data and a second communication mode for transmitting the second data; selecting a first target transmission resource unit from a first set of transmission resource units according to the first communication mode and selecting a second target transmission resource unit from a second set of transmission resource units according to the second communication mode, the set of transmission resource units comprising the first set of transmission resource units and the second set of transmission resource units, the first set of transmission resource units comprising a plurality of transmission resource units and the second set of transmission resource units comprising a plurality of transmission resource units, the first set of transmission resource units and the second set of transmission resource units combining to obtain the set of transmission resource units, wherein the set of transmission resource units comprises a plurality of transmission resource units, each transmission resource unit comprising a time domain resource, a frequency domain resource and a coding resource, the coding resource being determined by a code domain resource and/or a pilot resource, the coding resources of any two transmission resource units are different, and the second target transmission resource unit is different from the first target transmission resource unit; mapping the first data to the first target transmission resource unit to obtain a first data frame, and mapping the second data to the second target transmission resource unit to obtain a second data frame;

instructing the transceiver to transmit the first data frame through the first communication mode and the second data frame through the second communication mode; the first communication mode is cellular communication and the second communication mode is D2D communication; or the first communication mode is D2D communication and the second communication mode is cellular communication.

8. The communication device of claim 7,

the processor is further configured to obtain a transmission resource unit grouping indication, where the transmission resource unit grouping indication indicates that the set of transmission resource units includes the first group of transmission resource units and the second group of transmission resource units, where the first group of transmission resource units is used for the first communication mode communication, and the second group of transmission resource units is used for the second communication mode communication.

9. The communication device of claim 8,

the first data frame and the second data frame carry a communication mode indication, where the communication mode indication is used to indicate a communication mode adopted for transmitting the first data frame or the second data frame.

10. A communication device, comprising:

a transceiver, a memory, and a processor;

wherein the memory is to store program instructions;

receiving, by the transceiver, a first data frame and a second data frame;

the processor is configured to determine a first target transmission resource unit for transmitting the first data frame and determine a second target transmission resource unit for transmitting the second data frame, where the first target transmission resource unit and the second target transmission resource unit are two different transmission resource units in a transmission resource unit set, the transmission resource unit set includes a plurality of transmission resource units, each transmission resource unit includes a time domain resource, a frequency domain resource, and a coding resource, the coding resource is determined by a code domain resource and/or a pilot resource, and coding resources of any two transmission resource units are different; demodulating the first data frame according to the first target transmission resource unit to obtain first data, judging whether the first target transmission resource unit belongs to a first group of transmission resource units, and if the first target transmission resource unit belongs to the first group of transmission resource units, determining that a communication mode for transmitting the first data frame is a first communication mode; demodulating the second data frame according to the second target transmission resource unit to obtain second data, determining whether the second target transmission resource unit belongs to a second group of transmission resource units, if the second target transmission resource unit belongs to the second group of transmission resource units, determining that a communication mode for transmitting the second data frame is a second communication mode, wherein the set of transmission resource units comprises the first set of transmission resource units and the second set of transmission resource units, the first set of transmission resource units comprises a plurality of transmission resource units, the second set of transmission resource units comprises a plurality of transmission resource units, the first set of transmission resource units and the second set of transmission resource units are combined to obtain the set of transmission resource units, the first communication mode is cellular communication, and the second communication mode is D2D communication; or the first communication mode is D2D communication and the second communication mode is cellular communication.

11. The communication device of claim 10,

12. The communication device of claim 10,

the processor is further specifically configured to obtain a communication mode indication from the first data, and determine, according to the communication mode indication obtained from the first data, that a communication mode used for transmitting the first data frame is a first communication mode; acquiring a communication mode indication from the second data, and determining that the communication mode for transmitting the second data frame is a second communication mode according to the communication mode indication acquired from the second data;