CN113747574A

CN113747574A - Data transmission method and device

Info

Publication number: CN113747574A
Application number: CN202010470056.9A
Authority: CN
Inventors: 张云昊; 徐修强; 柴晓萌
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-05-28
Filing date: 2020-05-28
Publication date: 2021-12-03
Also published as: WO2021239113A1

Abstract

The application discloses a data transmission method and device. The terminal sends a first signal sequence, wherein the first signal sequence is used for indicating that the terminal has data to be sent; and transmitting data to be transmitted on a first transmission resource associated with the first signal sequence. And the access network equipment receives the first signal sequence and receives the data sent by the terminal. The first transmission resource comprises one or more of: configured authorized resources and random access resources. By adopting the scheme of the application, the access network equipment detects the first transmission resource associated with the first signal sequence after receiving the first signal sequence indicating that the terminal has the data to be sent, and receives the data sent by the terminal on the first transmission resource without detecting the first transmission resource all the time, so that the reliability of data transmission can be improved, and meanwhile, the detection overhead of the access network equipment can be reduced.

Description

Data transmission method and device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a data transmission method and apparatus.

Background

As shown in fig. 1, a schematic diagram of a large connection scenario of mass machine-type communications (mtc), along with the development of internet of things (IoT), in each application scenario of a home, industrial production, public place, and the like, a terminal gradually exhibits characteristics of large quantity, densification, multi-form, and the like. For example, in an industrial automation scenario, a plant includes a monitoring device (monitoring device), a production machine (production machine), and a very large number of sensors (sensors), and there may also be terminals such as a mobile phone and a wearable device used by a worker. If all or most of the terminals are in a connected state for a long time and are scheduled for transmission by the access network equipment, the access network equipment has high signaling overhead and high probability of signaling congestion. If the access network device configures a semi-static resource for the terminal, the terminal may be in an inactive state (inactive state) or an idle state (idle state), and may transmit data or not on the configured resource, while the access network device always performs detection on the configured resource. When the number of the terminals is large, the detection complexity of the access network equipment is correspondingly high.

In the scene of the internet of things, there is a terminal with a special service form, namely a safety detection terminal, such as a smoke alarm, a temperature and humidity alarm, which is called an alarm detection terminal or an alarm terminal in the application. Such terminals are high in number, are generally battery powered and have high charging/battery replacement costs, and have no data transmission for a long time. It is therefore reasonable to leave them unconnected for a long time. However, when a security problem is detected and data needs to be transmitted, the data is often urgent information, and an alarm detection terminal needs to send a data packet to a network side with short time delay and high reliability. In order to reliably receive the data sent by the terminal in time, the access network device needs to perform detection at a higher frequency, which may result in higher overhead.

Therefore, how to transmit the data of the terminal is a problem to be solved by the present application, so that the reliability of data transmission of the terminal is improved, and the detection overhead of the access network device is reduced as much as possible.

Disclosure of Invention

The application provides a data transmission method and device, which aim to reduce detection overhead of access network equipment while improving reliability of data transmission.

In a first aspect, a data transmission method is provided, where the method includes: sending a first signal sequence, wherein the first signal sequence is used for indicating that data to be sent exist in a terminal; and transmitting the data to be transmitted on a first transmission resource associated with the first signal sequence, the first transmission resource comprising one or more of: configured granted grant (CG) resources, random access resources. In this aspect, after receiving a first signal sequence indicating that data to be sent exists at a terminal, an access network device detects a first transmission resource associated with the first signal sequence, and receives the data sent by the terminal on the first transmission resource without detecting the first transmission resource all the time, which can improve reliability of data transmission and reduce detection overhead of the access network device.

The first transmission resource associated with the first signal sequence may be a first transmission resource adjacent to the first signal sequence in transmission time, or may be a first transmission resource having a mapping relation with the first signal sequence.

In one possible implementation, the random access resource includes a Physical Random Access Channel (PRACH) time-frequency resource and a Physical Uplink Shared Channel (PUSCH) time-frequency resource.

In yet another possible implementation, the method further comprises: receiving a broadcast message, where the broadcast message includes configuration information of a first time-frequency resource, and the first time-frequency resource is used for transmitting the first signal sequence. In the implementation, the access network device configures a first time-frequency resource for sending a first signal sequence to the terminal in advance, so that the terminal can inform the access network device of the existence of data to be sent in time without entering a connection state when the data to be sent exists; the number of the first signal sequences is small, and the detection complexity of the access network equipment is low.

In yet another possible implementation, the transmitting the first signal sequence includes: transmitting the first signal sequence on one or more of the first time-frequency resources.

It can be understood that, for the same data/service type, multiple terminals may also transmit the first signal sequence on one or more first time-frequency resources, which enhances the power of the first signal sequence, so that the access network device may accurately detect the first signal sequence. For different data/service types, the plurality of terminals transmit the first signal sequence on different first time-frequency resources for distinction.

In yet another possible implementation, the first signal sequence is a demodulation reference signal, and the first time-frequency resource is a time-frequency resource used for sending the demodulation reference signal in the first CG resource. In this implementation, the first CG resource for transmitting the DMRS may be pre-configured.

In yet another possible implementation, the first signal sequence is an Uplink Control Information (UCI) sequence, and a cyclic shift value of the UCI sequence is used to indicate that the terminal has data to be transmitted. In the implementation, the terminal and the access network device can accurately indicate and know that the terminal has data to be sent according to the cyclic shift value of the UCI sequence.

In another possible implementation, the transmitting the data to be transmitted on the first transmission resource associated with the first signal sequence includes: and sending a PUSCH on one or more second CG resources associated with the first time-frequency resource, or sending a random access message A on one or more random access time-frequency resources associated with the first time-frequency resource, wherein the PUSCH or the random access message A carries the data to be sent. In the implementation, after receiving a DMRS or UCI sequence indicating that the terminal has data to be sent, the access network device detects a CG resource or Msg a resource associated with the first signal sequence, and receives the data sent by the terminal on the CG resource or Msg a resource without detecting the CG resource or Msg a resource all the time, which can improve reliability of data transmission and reduce detection overhead of the access network device.

In another possible implementation, the first signal sequence is specifically a first random access preamble, and the transmitting the first signal sequence includes: sending the first random access preamble at a first random access opportunity, wherein the first random access preamble is used for indicating that the terminal has data to be sent, and the first random access preamble belongs to a first random access preamble set corresponding to the first random access opportunity; the transmitting the data to be transmitted on the first transmission resource associated with the first signal sequence includes: sending a second random access preamble at a second random access opportunity, wherein the second random access preamble belongs to a second random access preamble set corresponding to the second random access opportunity; sending a PUSCH at a second uplink data transmission opportunity associated with the second random access preamble, where a demodulation reference signal (DMRS) used for demodulating the PUSCH belongs to a demodulation reference signal set corresponding to the second uplink data transmission opportunity, and the PUSCH carries the data to be sent; wherein the second random access occasion is associated with the first random access preamble, or the second set of random access preambles is associated with the first random access preamble. In the implementation, after receiving a first random access preamble indicating that a terminal has data to be sent at a first random access occasion, an access network device detects a second random access preamble at a second random access occasion according to configuration of random access resources, and detects a DMRS and demodulates data carried in a PUSCH at a second uplink data transmission occasion associated with the second random access preamble, so that reliability of data transmission can be improved and detection overhead of the access network device can be reduced.

In yet another possible implementation, the configuration information further includes indication information, where the indication information is used to indicate whether to allow the data to be transmitted on a random access resource associated with a SS/PBCH that is different from a first synchronization signal/physical broadcast channel (SS/PBCH), and the first SS/PBCH is the SS/PBCH associated with the first time frequency resource. In this implementation, when the terminal has data to be sent and the access network device sends the indication information to the terminal, the terminal may preempt the random access resource associated with the SS/PBCH different from the first SS/PBCH to send the data to be sent, so as to reliably send the data to be sent.

In a second aspect, a data transmission method is provided, the method including: receiving a first signal sequence, wherein the first signal sequence is used for indicating that data to be sent exists in a terminal; and receiving the data on a first transmission resource associated with the first signal sequence, the first transmission resource comprising one or more of: CG resources, random access resources.

In one possible implementation, the random access resource includes a PRACH time-frequency resource and a PUSCH time-frequency resource.

In yet another possible implementation, the method further comprises: and sending a broadcast message, wherein the broadcast message comprises configuration information of a first time-frequency resource, and the first time-frequency resource is used for the terminal to send the first signal sequence.

In yet another possible implementation, the receiving the first signal sequence includes: receiving the first signal sequence on one or more of the first time-frequency resources.

In yet another possible implementation, the first signal sequence is a demodulation reference signal, and the first time-frequency resource is a time-frequency resource used for sending the demodulation reference signal in the first CG resource.

In yet another possible implementation, the first signal sequence is a UCI sequence, and a cyclic shift value of the UCI sequence is used to indicate that the terminal has data to be transmitted.

In yet another possible implementation, receiving the data on a first transmission resource associated with the first signal sequence includes: receiving a PUSCH on one or more second CG resources associated with the first time-frequency resource, or receiving a random access message A on one or more random access time-frequency resources associated with the first time-frequency resource, wherein the PUSCH or the random access message A carries the data.

In yet another possible implementation, the first signal sequence is specifically a first random access preamble, and the receiving the first signal sequence includes: receiving the first random access preamble at a first random access opportunity, wherein the first random access preamble is used for indicating that the terminal has data to be sent, and the first random access preamble belongs to a first random access preamble set corresponding to the first random access opportunity; the receiving the data on a first transmission resource associated with the first signal sequence comprises: receiving a second random access preamble at a second random access opportunity, wherein the second random access preamble belongs to a second random access preamble set corresponding to the second random access opportunity; receiving a PUSCH at a second uplink data transmission time associated with the second random access preamble, wherein a demodulation reference signal for demodulating the PUSCH belongs to a demodulation reference signal set corresponding to the second uplink data transmission time, and the PUSCH carries the data to be transmitted; wherein the second random access occasion is associated with the first random access preamble, or the second set of random access preambles is associated with the first random access preamble.

In yet another possible implementation, the configuration information further includes indication information, where the indication information is used to indicate whether to allow the data to be transmitted on a random access resource associated with a SS/PBCH different from a first SS/PBCH, where the first SS/PBCH is the SS/PBCH associated with the first time/frequency resource.

In a third aspect, a data transmission apparatus is provided for performing the method of the first aspect or any possible implementation of the first aspect. The data transmission device may be a terminal in the first aspect or any possible implementation of the first aspect, or a module, such as a chip or a chip system, applied in the terminal. The data transmission device includes modules, units, or means (means) corresponding to the above methods, and the modules, units, or means may be implemented by hardware, software, or hardware to execute corresponding software. The hardware or software includes one or more modules or units corresponding to the above functions.

With reference to the third aspect, in one possible implementation, the data transmission apparatus includes: a transceiver unit; the transceiver unit is configured to transmit a first signal sequence, where the first signal sequence is used to indicate that the apparatus has data to be transmitted; and the transceiver unit is further configured to transmit the data to be transmitted on a first transmission resource associated with the first signal sequence, where the first transmission resource includes one or more of the following resources: CG resources, random access resources.

Optionally, the random access resource includes a PRACH time-frequency resource and a PUSCH time-frequency resource.

Optionally, the transceiver unit is further configured to receive a broadcast message, where the broadcast message includes configuration information of a first time-frequency resource, and the first time-frequency resource is used to transmit the first signal sequence.

Optionally, the transceiver unit is further configured to transmit the first signal sequence on one or more of the first time-frequency resources.

Optionally, the first signal sequence is a demodulation reference signal, and the first time-frequency resource is a time-frequency resource used for sending the demodulation reference signal in a first CG resource.

Optionally, the first signal sequence is a UCI sequence, and a cyclic shift value of the UCI sequence is used to indicate that the terminal has data to be transmitted.

Optionally, the transceiver unit is further configured to send a PUSCH on one or more second CG resources associated with the first time-frequency resource, or send a random access message a on one or more random access time-frequency resources associated with the first time-frequency resource, where the PUSCH or the random access message a carries the data to be sent.

Optionally, the first signal sequence is specifically a first random access preamble; the transceiver unit is configured to send the first random access preamble at a first random access occasion, where the first random access preamble is used to indicate that the terminal has data to be sent, and the first random access preamble belongs to a first random access preamble set corresponding to the first random access occasion; the transceiver unit is further configured to send a second random access preamble at a second random access occasion, where the second random access preamble belongs to a second random access preamble set corresponding to the second random access occasion; the transceiver unit is further configured to send a PUSCH at a second uplink data transmission occasion associated with the second random access preamble, where a demodulation reference signal used for demodulating the PUSCH belongs to a demodulation reference signal set corresponding to the second uplink data transmission occasion, and the PUSCH carries the data to be sent; wherein the second random access occasion is associated with the first random access preamble, or the second set of random access preambles is associated with the first random access preamble.

Optionally, the configuration information further includes indication information, where the indication information is used to indicate whether to allow sending of the data to be sent on a random access resource associated with an SS/PBCH different from a first SS/PBCH, where the first SS/PBCH is the SS/PBCH associated with the first time/frequency resource.

With reference to the third aspect, in yet another possible implementation, a data transmission apparatus includes: the device comprises an input interface, an output interface and a processing circuit; the output interface is used for outputting a first signal sequence, and the first signal sequence is used for indicating that the device has data to be output; and the output interface is further configured to output the data to be output on a first transmission resource associated with the first signal sequence, where the first transmission resource includes one or more of the following resources: CG resources, random access resources.

Optionally, the input interface is further configured to input a broadcast message, where the broadcast message includes configuration information of a first time-frequency resource, and the first time-frequency resource is used to output the first signal sequence.

Optionally, the output interface is further configured to output the first signal sequence on one or more of the first time-frequency resources.

Optionally, the first signal sequence is a demodulation reference signal, and the first time-frequency resource is a time-frequency resource used for outputting the demodulation reference signal in the first CG resource.

Optionally, the first signal sequence is a UCI sequence, and a cyclic shift value of the UCI sequence is used to indicate that the terminal has data to be output.

Optionally, the output interface is further configured to output a PUSCH on one or more second CG resources associated with the first time-frequency resource, or output a random access message a on one or more random access time-frequency resources associated with the first time-frequency resource, where the PUSCH or the random access message a carries the data to be output.

Optionally, the first signal sequence is specifically a first random access preamble; the output interface is configured to output the first random access preamble at a first random access occasion, where the first random access preamble is used to indicate that the terminal has data to be output, and the first random access preamble belongs to a first random access preamble set corresponding to the first random access occasion; the output interface is further configured to output a second random access preamble at a second random access occasion, where the second random access preamble belongs to a second random access preamble set corresponding to the second random access occasion; the output interface is further configured to output a PUSCH at a second uplink data transmission occasion associated with the second random access preamble, where a demodulation reference signal used for demodulating the PUSCH belongs to a demodulation reference signal set corresponding to the second uplink data transmission occasion, and the PUSCH carries the data to be sent; wherein the second random access occasion is associated with the first random access preamble, or the second set of random access preambles is associated with the first random access preamble.

Optionally, the configuration information further includes indication information, where the indication information is used to indicate whether to allow the data to be output on a random access resource associated with a SS/PBCH different from a first SS/PBCH, where the first SS/PBCH is the SS/PBCH associated with the first time/frequency resource.

The data transmission apparatus may further comprise a memory coupled with the at least one processor, the at least one processor being configured to execute program instructions stored in the memory to cause the data transmission apparatus to perform the method of the first aspect or any possible implementation of the first aspect.

In one possible implementation, the memory is used to store program instructions and data. The memory is coupled to the at least one processor, and the at least one processor may invoke and execute program instructions stored in the memory to cause the data transmission apparatus to perform the method of the first aspect or any possible implementation of the first aspect.

Illustratively, the data transmission device further comprises a communication interface, and the communication interface is used for the data transmission device to communicate with other equipment. When the data transmission device is a terminal, the communication interface is a transceiver, an input/output interface, or a circuit.

In one possible design, the data transmission device includes: at least one processor and a communication interface for performing the method of the first aspect or any possible implementation of the first aspect, in particular comprising: the at least one processor communicates with the outside using the communication interface; the at least one processor is configured to execute the computer program such that the data transmission apparatus performs the method of the first aspect or any possible implementation of the first aspect. It will be appreciated that the external may be an object other than a processor, or an object other than the data transfer device.

In another possible embodiment, the data transmission device is a chip or a chip system. The communication interface may be an input/output interface, interface circuit, output circuit, input circuit, pin or related circuit, etc. on the chip or system of chips. The processor may also be embodied as a processing circuit or a logic circuit.

The technical effects brought by any one of the design manners in the third aspect may be referred to the technical effects brought by the different design manners in the first aspect, and are not described herein again.

In a fourth aspect, there is provided a data transmission apparatus for performing the method of the second aspect or any possible implementation of the second aspect. The data transmission device may be an access network device in the second aspect or any possible implementation of the second aspect, or a module, such as a chip or a chip system, applied in the access network device. The data transmission device comprises modules, units or means corresponding to the implementation of the method, and the modules, units or means can be implemented by hardware, software or hardware to execute corresponding software. The hardware or software includes one or more modules or units corresponding to the above functions.

With reference to the fourth aspect, in one possible implementation, the data transmission apparatus includes: a transceiver unit; the receiving and sending unit is configured to receive a first signal sequence, where the first signal sequence is used to indicate that data to be sent exists in a terminal; and the transceiver unit is further configured to receive the data on a first transmission resource associated with the first signal sequence, the first transmission resource including one or more of: CG resources, random access resources.

Optionally, the transceiver unit is further configured to send a broadcast message, where the broadcast message includes configuration information of a first time-frequency resource, and the first time-frequency resource is used for the terminal to send the first signal sequence.

Optionally, the transceiver unit is further configured to receive the first signal sequence on one or more of the first time-frequency resources.

Optionally, the transceiver unit is further configured to receive a PUSCH on one or more second CG resources associated with the first time-frequency resource, or receive a random access message a on one or more random access time-frequency resources associated with the first time-frequency resource, where the PUSCH or the random access message a carries the data.

Optionally, the first signal sequence is specifically a first random access preamble; the transceiver unit is further configured to receive the first random access preamble at a first random access occasion, where the first random access preamble is used to indicate that the terminal has data to be sent, and the first random access preamble belongs to a first random access preamble set corresponding to the first random access occasion; the transceiver unit is further configured to receive a second random access preamble at a second random access occasion, where the second random access preamble belongs to a second random access preamble set corresponding to the second random access occasion; the transceiver unit is further configured to receive a PUSCH at a second uplink data transmission occasion associated with the second random access preamble, where a demodulation reference signal used for demodulating the PUSCH belongs to a demodulation reference signal set corresponding to the second uplink data transmission occasion; wherein the second random access occasion is associated with the first random access preamble, or the second set of random access preambles is associated with the first random access preamble.

With reference to the fourth aspect, in yet another possible implementation, a data transmission apparatus includes: the device comprises an input interface, an output interface and a processing circuit; the input interface is used for inputting a first signal sequence, and the first signal sequence is used for indicating that the terminal has data to be output; and the input interface is further configured to input the data on a first transmission resource associated with the first signal sequence, the first transmission resource including one or more of: CG resources, random access resources.

Optionally, the output interface is further configured to output a broadcast message, where the broadcast message includes configuration information of a first time-frequency resource, and the first time-frequency resource is used for the terminal to output the first signal sequence.

Optionally, the input interface is further configured to input the first signal sequence on one or more of the first time-frequency resources.

Optionally, the input interface is further configured to input a PUSCH on one or more second CG resources associated with the first time-frequency resource, or input a random access message a on one or more random access time-frequency resources associated with the first time-frequency resource, where the PUSCH or the random access message a carries the data.

Optionally, the first signal sequence is specifically a first random access preamble; the input interface is further configured to input the first random access preamble at a first random access occasion, where the first random access preamble is used to indicate that the terminal has data to be output, and the first random access preamble belongs to a first random access preamble set corresponding to the first random access occasion; the input interface is further configured to input a second random access preamble at a second random access occasion, where the second random access preamble belongs to a second random access preamble set corresponding to the second random access occasion; the input interface is further configured to input a PUSCH at a second uplink data transmission occasion associated with the second random access preamble, where a demodulation reference signal used for demodulating the PUSCH belongs to a demodulation reference signal set corresponding to the second uplink data transmission occasion, and the PUSCH carries the data to be transmitted; wherein the second random access occasion is associated with the first random access preamble, or the second set of random access preambles is associated with the first random access preamble.

The data transmission apparatus also illustratively comprises a memory coupled with the at least one processor, the at least one processor being configured to execute program instructions stored in the memory to cause the data transmission apparatus to perform a method according to the second aspect or any possible implementation of the second aspect.

In one possible implementation, the memory is used to store program instructions and data. The memory is coupled to the at least one processor, and the at least one processor may invoke and execute program instructions stored in the memory to cause the data transmission apparatus to perform a method according to the second aspect or any possible implementation of the second aspect.

Illustratively, the data transmission device further comprises a communication interface, and the communication interface is used for the data transmission device to communicate with other equipment. When the data transmission device is an access network device, the communication interface is a transceiver, an input/output interface, or a circuit.

In one possible design, the data transmission device includes: at least one processor and a communication interface for performing the method of the second aspect or any possible implementation of the second aspect, in particular comprising: the at least one processor communicates with the outside using the communication interface; the at least one processor is configured to execute the computer program such that the data transmission apparatus performs the method of the second aspect or any possible implementation of the second aspect. It will be appreciated that the external may be an object other than a processor, or an object other than the data transfer device.

The technical effects brought by any one of the design manners in the fourth aspect can be referred to the technical effects brought by the different design manners in the second aspect, and are not described herein again.

In a fifth aspect, a data transmission system is provided, which includes the data transmission apparatus in the third aspect or any implementation of the third aspect, and the data transmission apparatus in the fourth aspect or any implementation of the fourth aspect.

A sixth aspect provides a computer readable storage medium storing a computer program which, when run on a computer, causes any of the above aspects or aspects to be performed implementing the method.

In a seventh aspect, there is provided a computer program product which, when run on a computer, causes the method described in any of the above aspects or aspects to be performed.

In an eighth aspect, there is provided a computer program which, when run on a computer, causes the method described in any of the above aspects or aspects to be performed.

Drawings

FIG. 1 is a schematic diagram of a mMTC large connection scenario;

fig. 2 is a schematic diagram illustrating a flow of transmitting data by using Configured Grant (CG) resources in an RRC inactive scenario;

FIG. 3 is a schematic diagram illustrating a process of transmitting data by using a 2-step physical random access channel (2-step RACH) scheme in an RRC inactive state scenario;

FIG. 4 is a schematic diagram of a data transmission system to which the present application relates;

fig. 5 is a schematic structural diagram of a data transmission device according to an embodiment of the present application;

fig. 6 is a schematic flowchart of a data transmission method according to an embodiment of the present application;

fig. 7 is a schematic flowchart of a data transmission method according to an embodiment of the present application;

FIG. 8a is a schematic view of resource allocation;

FIG. 8b is a schematic diagram of another resource allocation;

fig. 9 is a schematic diagram of an application scenario of the data transmission method shown in fig. 7;

fig. 10 is a schematic flowchart of a data transmission method according to an embodiment of the present application;

FIG. 11 is a schematic diagram of another resource allocation;

fig. 12 is a schematic structural diagram of a data transmission apparatus according to an embodiment of the present application;

fig. 13 is a schematic structural diagram of a data transmission apparatus according to an embodiment of the present application;

fig. 14 is a schematic structural diagram of a simplified terminal provided in an embodiment of the present application;

fig. 15 is a schematic structural diagram of a simplified access network device according to an embodiment of the present application.

Detailed Description

The embodiments of the present application will be described below with reference to the drawings.

In the application, the terminal transmits data with a relatively low time delay, which can be understood as that the terminal can send data to the access network device without entering a connected state. The terminal is in an unconnected state, which means that the terminal is in an RRC inactive state, an idle state, a Power Saving Mode (PSM), or an inactive state of Discontinuous Reception (DRX).

First, two transmission resources related to the present application are briefly described:

CG resource

As shown in fig. 2, which is a schematic flow diagram of data transmission by using CG resources in an RRC inactive state scenario, a terminal uses uplink CG transmission resources preconfigured by an access network device to send an uplink packet (uplink small data) through an uplink data channel, for example, a Physical Uplink Shared Channel (PUSCH). Optionally, the terminal further sends the identifier of the terminal through the uplink data channel. The access network device may pre-configure CG resources to each terminal within its service range via Radio Resource Control (RRC) signaling. The preconfigured CG resources mainly include resources for transmitting PUSCH and resources for transmitting DMRS. The CG resource used by the terminal may be shared by multiple terminals or dedicated to one terminal.

Random access resource

In the present application, the random access resource mainly refers to a resource used for sending a random access message a (msg a) in a 2-step RACH.

The 2-step RACH comprises two steps of sending Msg A by the terminal to the access network equipment and sending a random access message B (Msg B) by the access network equipment to the terminal. Wherein:

the terminal sends Msg a, specifically, the terminal sends a random access preamble (preamble) on a physical random access channel (RO) occasion, and sends uplink data to the access network device on a corresponding PUSCH at a physical uplink shared channel (PO) occasion. Optionally, the terminal may also send the identity of the terminal to the access network device at the PO. A random access preamble, also called a preamble, is a sequence, which can be used by an access network device to determine a Time Advance (TA) of a terminal.

The access network device sends Msg B, specifically, the access network device sends Random Access Response (RAR). The RAR may include feedback information of Msg a to notify the terminal whether the uplink data is successfully received.

The PRACH resource, the preamble resource, the PUSCH resource (including the DMRS resource in the PUSCH), and the resource for receiving the RAR are configured by the access network device when the terminal is in the RRC connected state, and/or configured by the access network device for the terminal in the broadcasted system message.

Wherein different TA values of the terminal result from different distances from the terminal to the access network device. The TA value of the terminal is typically determined by the access network device through preamble detection. For example, the access network device receives the preamble sent by the terminal, and determines the TA value when the terminal sends the preamble by the access network device according to the detection and demodulation conditions of the preamble, and demodulates the PUSCH in the MsgA according to the TA, or informs the TA value to the terminal in the subsequent random access step, so that the terminal adjusts the uplink synchronous retransmission data.

The CG mode is suitable for the TA valid time of the terminal; when the TA is invalid, if the terminal only transmits the PUSCH, the access network device may not be able to correctly demodulate the PUSCH, and therefore, the 2-step RACH scheme may be adopted to transmit uplink data.

Physical Uplink Control Channel (PUCCH)/UCI format

A PUCCH supporting 5 formats in a New Radio (NR) is divided into:

1) short PUCCH: the PUCCH channel occupies 1-2 symbols, including PUCCH format0, PUCCH format 2;

2) and (3) long PUCCH: the PUCCH channel occupies 4-14 symbols, including PUCCH format1, PUCCH format3, PUCCH format 4.

The number of symbols occupied by 5 PUCCH formats and the number of information bits carried are shown in table 1 below:

table 1 PUCCH formats

In one slot, 1 or 2 PUCCHs may be transmitted, and when 2 PUCCHs are transmitted, at least one of the PUCCHs is PUCCH format0 or PUCCH format 2.

The terminal has no data to upload for a long time, so it is reasonable to have it in a non-connected state for a long time. However, when the alarm data is detected, it is often urgent information, and the terminal is required to transmit the data packet to the network side with a short delay and high reliability. The alarm data includes location information of the terminal, an alarm situation, and the like, and is usually packet data. However, in order to ensure low delay requirement, if CG resources are used to transmit data, the reserved CG resources need to be densely arranged in the time domain, and the access network device needs to detect each preconfigured time/frequency/code resource, resulting in a large detection overhead of the access network device. If the data is transmitted using the message a in the 2-step RACH scheme and a contention-based random access (CBRA) resource is used, when more terminals transmit the message a at the same time, the reliability of the data is low; if a non-contention-based random access (CFRA) resource is used, the access network device detects a sequence/data on each time/frequency/code resource reserved for the terminal, and the detection overhead of the access network device is also large.

The application provides a data transmission scheme, after receiving a first signal sequence indicating that a terminal has data to be transmitted, access network equipment detects a first transmission resource associated with the first signal sequence, receives the data transmitted by the terminal on the first transmission resource without detecting the first transmission resource all the time, and can reduce detection overhead of the access network equipment while improving reliability of data transmission.

The technical scheme of the embodiment of the application can be applied to various communication systems. For example: a Long Term Evolution (LTE) system, an LTE Frequency Division Duplex (FDD) system, an LTE Time Division Duplex (TDD) system, an enhanced LTE (enhanced long term evolution, LTE), a fifth generation (5G) system, or an NR, etc., where the 5G mobile communication system includes a non-independent group (NSA) 5G mobile communication system or an independent group (stand, SA) 5G mobile communication system. The technical scheme provided by the application can also be applied to future communication systems, such as a sixth generation mobile communication system. The communication system may also be a Public Land Mobile Network (PLMN) network, a device-to-device (D2D) communication system, a machine-to-machine (M2M) communication system, an internet of things (IoT), a vehicle networking communication system, or other communication systems.

Fig. 4 shows a schematic diagram of a data transmission system to which the present application relates. The data transmission system may include at least one access network device 100 (only 1 shown in the drawing) and one or more terminals 200 connected to the access network device 100.

Alternatively, a terminal in the embodiments of the present application may refer to an access terminal, a subscriber unit, a subscriber station, a mobile station, a relay station, a remote terminal, a mobile device, a user terminal (user equipment), a User Equipment (UE), a terminal (terminal), a wireless communication device, a user agent, a user equipment, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal in a future 5G network or a terminal in a future evolved PLMN or a terminal in a future vehicle networking, etc., which are not limited in this embodiment of the present application.

By way of example and not limitation, in the embodiment of the present application, the terminal may be a mobile phone, a tablet computer, a computer with a wireless transceiving function, a virtual reality terminal, an augmented reality terminal, a wireless terminal in industrial control, a wireless terminal in unmanned driving, a wireless terminal in tele-surgery, a wireless terminal in a smart grid, a wireless terminal in transportation security, a wireless terminal in a smart city, a wireless terminal in a smart home, and the like.

By way of example and not limitation, in the embodiments of the present application, a wearable device may also be referred to as a wearable smart device, which is a generic term for intelligently designing daily wearing and developing wearable devices, such as glasses, gloves, watches, clothing, shoes, and the like, by applying wearable technology. A wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction and cloud interaction. The generalized wearable smart device includes full functionality, large size, and can implement full or partial functionality without relying on a smart phone, such as: smart watches or smart glasses and the like, and only focus on a certain type of application functions, and need to be used in cooperation with other devices such as smart phones, such as various smart bracelets for physical sign monitoring, smart jewelry and the like.

In addition, in the embodiment of the application, the terminal can also be a terminal in an IoT system, the IoT is an important component of future information technology development, and the main technical feature is that the object is connected with the network through a communication technology, so that an intelligent network with man-machine interconnection and object-object interconnection is realized. In the embodiment of the present application, the IoT technology may achieve massive connection, deep coverage, and power saving for the terminal through, for example, a Narrowband (NB) technology.

In addition, in this embodiment of the application, the terminal may further include sensors such as an intelligent printer, a train detector, and a gas station, and the main functions include collecting data (part of the terminal), receiving control information and downlink data of the access network device, and sending electromagnetic waves to transmit uplink data to the access network device.

Optionally, the access network device in this embodiment may be any communication device with a wireless transceiving function, which is used for communicating with a terminal. The access network devices include, but are not limited to: an evolved node B (eNB), a baseband unit (BBU), an Access Point (AP) in a wireless fidelity (WIFI) system, a wireless relay node, a wireless backhaul node, a Transmission Point (TP), or a Transmission Reception Point (TRP). The access network device may also be a gNB or a TRP or a TP in a 5G system, or one or a group (including multiple antenna panels) of antenna panels of a base station in a 5G system. In addition, the access network device may also be a network node forming a gNB or TP, such as a BBU, a Distributed Unit (DU), or the like.

In some deployments, the gNB may include a Centralized Unit (CU) and a DU. Furthermore, the gNB may also include an Active Antenna Unit (AAU). The CU implements part of the function of the gNB and the DU implements part of the function of the gNB. For example, the CU is responsible for processing non-real-time protocols and services, and implementing functions of a Radio Resource Control (RRC) layer and a Packet Data Convergence Protocol (PDCP) layer. The DU is responsible for processing a physical layer protocol and a real-time service, and realizes functions of a Radio Link Control (RLC) layer, a Media Access Control (MAC) layer, and a physical layer (PHY). The AAU implements part of the physical layer processing functions, radio frequency processing and active antenna related functions. Since the information of the RRC layer eventually becomes or is converted from the information of the PHY layer, the higher layer signaling, such as the RRC layer signaling, may also be considered to be transmitted by the DU or transmitted by the DU and the AAU under this architecture. It is to be understood that the access network device may be a device comprising one or more of a CU node, a DU node, an AAU node.

Optionally, in this embodiment of the present application, the access network device and the terminal may communicate through a licensed spectrum, may also communicate through an unlicensed spectrum, and may also communicate through the licensed spectrum and the unlicensed spectrum at the same time. The access network device and the terminal may communicate with each other through a frequency spectrum of less than 6 gigahertz (GHz), may communicate through a frequency spectrum of more than 6GHz, and may communicate using both a frequency spectrum of less than 6GHz and a frequency spectrum of more than 6 GHz. The embodiment of the application does not limit the frequency spectrum resources used between the access network device and the terminal.

Optionally, the terminal or the access network device in the embodiment of the present application may be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on the water surface; it may also be deployed on airborne airplanes, balloons and satellite vehicles. The embodiment of the application does not limit the application scene of the terminal or the access network device.

Optionally, in this embodiment of the present application, the terminal or the access network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. The hardware layer includes hardware such as a Central Processing Unit (CPU), a Memory Management Unit (MMU), and a memory (also referred to as a main memory). The operating system may be any one or more computer operating systems that implement business processing through processes (processes), such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a windows operating system. The application layer comprises applications such as a browser, an address list, word processing software, instant messaging software and the like. The embodiment of the present application does not particularly limit a specific structure of the execution main body of the method provided in the embodiment of the present application, as long as the execution main body can communicate with the method provided in the embodiment of the present application by running the program recorded with the code of the method provided in the embodiment of the present application, for example, the execution main body of the method provided in the embodiment of the present application may be a terminal or an access network device, or a functional module capable of calling the program and executing the program in the terminal or the access network device.

In other words, the functions related to the terminal or the access network device in the embodiment of the present application may be implemented by one device, or may be implemented by multiple devices together, or may be implemented by one or more functional modules in one device, which is not limited in this embodiment of the present application. It is understood that the above functions may be network elements in a hardware device, or software functions running on dedicated hardware, or a combination of hardware and software, or virtualization functions instantiated on a platform (e.g., a cloud platform).

For example, the related functions of the terminal or the access network device in the embodiment of the present application may be implemented by the data transmission apparatus 500 in fig. 5. Fig. 5 is a schematic structural diagram of a data transmission apparatus 500 according to an embodiment of the present application. The data transmission device 500 includes one or

more processors

501, 507, a communication line 502, and at least one communication interface (illustrated in fig. 5 as including a communication interface 504 for example only). Optionally, a memory 503 may also be included.

The processor 501 may be a CPU, a microprocessor, an application-specific integrated circuit (ASIC), or one or more ics for controlling the execution of programs in accordance with the teachings of the present application.

The communication link 502 may include a path for connecting different components.

The communication interface 504, which may be a transceiver module, is used for communicating with other devices or communication networks, such as ethernet, Radio Access Network (RAN), Wireless Local Area Networks (WLAN), etc. For example, the transceiver module may be a transceiver, or the like. Optionally, the communication interface 504 may also be a transceiver circuit located in the processor 501 for implementing signal input and signal output of the processor.

The memory 503 may be a device having a storage function. Such as, but not limited to, read-only memory (ROM) or other types of static storage devices that may store static information and instructions, Random Access Memory (RAM) or other types of dynamic storage devices that may store information and instructions, electrically erasable programmable read-only memory (EEPROM), compact disk read-only memory (CD-ROM) or other optical disk storage, optical disk storage (including compact disk, laser disk, optical disk, digital versatile disk, blu-ray disk, etc.), magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory may be separate and coupled to the processor via a communication line 502. The memory may also be integral to the processor.

The memory 503 is used for storing computer-executable instructions for executing the present application, and is controlled by the

processors

501 and 507. The

processors

501 and 507 are configured to execute computer-executable instructions stored in the memory 503, so as to implement the data transmission method provided in the embodiment of the present application.

Alternatively, in this embodiment of the present application, the

processors

501 and 507 may also execute functions related to processing in the data transmission method provided in the following embodiments of the present application, and the communication interface 504 is responsible for communicating with other devices or a communication network, which is not specifically limited in this embodiment of the present application.

The computer-executable instructions in the embodiments of the present application may also be referred to as application program codes, which are not specifically limited in the embodiments of the present application.

In a specific implementation,

processors

501, 507 may each include one or more CPUs, for example, in fig. 5, processor 501 includes CPU0 and CPU1, and processor 507 includes CPU0 and CPU 1.

In one implementation, data transmission apparatus 500 may include a plurality of processors, such as processor 501 and processor 507 in fig. 5, for example. Each of these processors may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. A processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (e.g., computer program instructions).

In a specific implementation, the data transmission apparatus 500 may further include an output device 505 and an input device 506, as an embodiment. An output device 505, which is in communication with the processor 501, may display information in a variety of ways.

The data transmission device 500 may be a general-purpose device or a special-purpose device. For example, the data transmission device 500 may be a desktop computer, a portable computer, a web server, a Personal Digital Assistant (PDA), a mobile phone, a tablet computer, a wireless terminal, an embedded device, or a device with a similar structure as in fig. 5. The embodiment of the present application does not limit the type of the data transmission device 500.

The data transmission method provided in the embodiment of the present application will be specifically described below with reference to fig. 1 to 11.

It should be noted that, in the following embodiments of the present application, names of messages between network elements or names of parameters in messages are only an example, and other names may also be used in a specific implementation, which is not specifically limited in this embodiment of the present application.

As shown in fig. 6, which is a schematic flow chart of a data transmission method provided in the embodiment of the present application, for example, the method may include the following steps:

s101, the terminal sends a first signal sequence. The first signal sequence is used for indicating that the terminal has data to be sent.

Accordingly, the access network device detects the first signal sequence.

In this embodiment, the terminal is in a non-connected state to save power consumption. The terminal is in the non-connected state, which means that the terminal is in an RRC non-active state, an idle state, a PSM, or a non-active state of DRX, etc.

When the terminal has data to be sent, for example, the terminal detects an alarm, the terminal sends a first signal sequence on a time-frequency resource pre-configured by the access network device. The first signal sequence is used for indicating that the terminal has data to be transmitted. The data to be sent may be alarm data, such as smoke alarm, temperature and humidity alarm data, and the like. The terminal may be a security probe type terminal. Further, a plurality of first signal sequences may be set according to the type of the alarm data. When the access network device configures a plurality of first signal sequences, the access network device needs to detect the plurality of first signal sequences accordingly.

And the access network equipment detects the first signal sequence on the time-frequency resource of the first signal sequence and detects whether the terminal has data to be sent or not. The number of the first signal sequences is small, and the detection complexity of the access network equipment is low.

S102, the terminal sends data to be sent on a first transmission resource associated with the first signal sequence.

Accordingly, the access network device receives the data.

And after the terminal finishes sending the first signal sequence, sending data to be sent on a first transmission resource associated with the first signal sequence. The first transmission resource may be a pre-configured resource of the access network device. The first transmission resource associated with the first signal sequence may refer to a transmission resource adjacent to a transmission time of the first signal sequence, or a time-frequency resource adjacent to a time-frequency resource used for transmitting the first signal sequence; the first transmission resource associated with the first signal sequence may also refer to a time-frequency resource having a mapping relationship with the first signal sequence.

The first transmission resource may be a PUSCH resource in the CG resource, and the PUSCH carries the data to be transmitted.

The first transmission resource may also be a random access resource. The random access resource comprises PRACH time frequency resource and PUSCH time frequency resource. In this embodiment, a 2-step RACH scheme may be adopted, and the Msg a includes a preamble and a PUSCH. The PRACH time-frequency resource is used for sending a preamble in the Msg A, and the PUSCH time-frequency resource is used for sending a PUSCH. The PUSCH carries the data to be transmitted.

The terminal adopts the pre-configured first transmission resource to send the data to be sent, does not need to enter a connection state, and can continuously keep a low power consumption state.

The access network device does not need to detect the first transmission resource before detecting the first signal sequence, so as to save the detection overhead of the access network device. And after the access network equipment detects and receives the first signal sequence, receiving data sent by the terminal on the first transmission resource according to the configuration information. Therefore, the data sent by the terminal can be reliably and timely received.

According to the data transmission method provided by the embodiment of the application, after receiving a first signal sequence indicating that data to be transmitted exists at a terminal, an access network device detects a first transmission resource associated with the first signal sequence, and receives the data transmitted by the terminal on the first transmission resource without detecting the first transmission resource all the time, so that the reliability of data transmission can be improved, and the detection overhead of the access network device can be reduced.

Fig. 7 is a schematic flowchart of a data transmission method according to an embodiment of the present application. In this embodiment, the first signal sequence is DMRS. Illustratively, the method may comprise the steps of:

s201, the access network equipment sends a broadcast message. The broadcast message includes configuration information of a first time-frequency resource for transmitting a first signal sequence.

Accordingly, the terminal receives the broadcast message.

In one possible implementation, when the terminal is in the RRC connected state, the access network device may configure, in advance, the first time-frequency resource for transmitting the first signal sequence to the terminal through RRC signaling. The first time-frequency resource for transmitting the first signal sequence may include one or more. The first time-frequency resource may be a time-frequency resource used for transmitting the DMRS among the CG resources. The access network equipment sends the configuration information of the first time-frequency resource to the terminal through an RRC dedicated signaling, wherein the first time-frequency resource is dedicated to the terminal.

In another possible implementation, the access network device may also carry the configuration information of the first time-frequency resource through a broadcast message, that is, configure which time-frequency resources are used for sending the first signal sequence to the terminal, where the first time-frequency resource may be shared by multiple terminals. At this time, the terminal may be in a connected state or a non-connected state. The access network device may send the configuration information of the first time-frequency resource to the terminal through a common signaling, where the common signaling is, for example, system information.

As shown in the resource configuration diagram of fig. 8a or as shown in another resource configuration diagram of fig. 8b, the access network device configures a first CG resource for the UEs 1-3, where the first CG resource is used for transmitting a first signal sequence. The first signal sequence is a DMRS. The first time-frequency resource is a time-frequency resource used for sending a demodulation reference signal in the first CG resource. The first CG resource may be a contention-based or non-contention-based CG resource.

Further, the broadcast message may further include configuration information of the first signal sequence. The configuration information of the first signal sequence includes a DMRS sequence pattern, a DMRS sequence length, a symbol position in a slot, a Resource Element (RE) position, an Orthogonal Cover Code (OCC), and the like. The DMRS sequence pattern represents the combination of each element value in the DMRS sequence, and the OCC refers to a code word which is multiplied by the DMRS sequence element by element before the DMRS sequence is mapped to a corresponding time frequency position. Further, a plurality of DMRSs may be set according to data/traffic types. For the same data/service type, the DMRSs configured by the access network device for each terminal are the same, that is, the DMRS sequence pattern, the DMRS sequence length, the symbol position in the time slot, the RE position, the OCC, and other parameters are all the same. For different and same data/service types, the DMRSs configured by the access network device for each terminal are the same, that is, the DMRS sequence patterns, DMRS sequence lengths, symbol positions in the time slot, RE positions, OCC, and other parameters may be different. When the access network device is configured with multiple DMRSs, the access network device needs to detect the multiple DMRSs accordingly.

Further, as shown in fig. 8a, the access network device may also pre-configure a second CG resource for the terminal, where the second CG resource is used to transmit data to be transmitted. As shown in fig. 8b, the access network device may also pre-configure Msg a resources for the terminal. The Msg a resource includes a preamble resource and a PUSCH resource. The Msg a resource is used for transmitting data to be transmitted. The second CG resource or Msg a resource configured by the access network device for each terminal may be different.

Optionally, after receiving the configuration information of the first time-frequency resource, the terminal enters a non-connected state if the terminal does not have data to be sent. The terminal is always in a non-connection state unless the terminal has data to be sent, so that the power consumption of the terminal is saved.

S202, the terminal transmits a first signal sequence on one or more first time-frequency resources. The first signal sequence is used for indicating that the terminal has data to be sent.

When the terminal has data to be sent, the terminal sends a first signal sequence on one or more configured first time-frequency resources according to the configuration of the first time-frequency resources, so as to indicate that the terminal has the data to be sent. Since the resource is pre-configured for the terminal, the terminal does not need to enter an RRC connected state, and when the terminal is in a non-connected state, the terminal may send the first signal sequence to the access network device on the first time-frequency resource.

As shown in fig. 8a or fig. 8b, UE1 transmits DMRSs at slots 1-3; the UE2 sends the DMRS in slots 2-3; the UE3 transmits the DMRS at slot 3. The DMRS is used to indicate that the terminal has data to be transmitted. The method comprises the steps that a plurality of UE (user equipment) use the same DMRS (demodulation reference signals) to transmit a first signal sequence together, the power enhancement effect of the DMRS on the detection of the access network equipment is achieved (the colors of the DMRS on slots 1-3 are gradually deepened, and the power of the DMRS is gradually enhanced), and the accuracy of the successful detection of the access network equipment triggered by the DMRS is higher. In fig. 8a or fig. 8b, the access network device detects the DMRS on slot 3.

The DMRS may be the previously configured first CG resource described above. In addition, the terminal may preempt the DMRS in the scheduled uplink time slot.

And S203, sending the PUSCH on one or more second CG resources associated with the first time-frequency resources. The PUSCH carries data to be transmitted.

And after the terminal finishes transmitting the first signal sequence, the terminal transmits the PUSCH on one or more second CG resources associated with the first time-frequency resource. Wherein the second CG resource associated with the first time-frequency resource may be a second CG resource temporally adjacent to the first signal sequence transmission. Specifically, as shown in fig. 8a, the terminal transmits DMRS and PUSCH on the neighboring slots 4-6 using the preconfigured second CG resource. The second CG resource includes a time-frequency resource for transmitting DMRS and PUSCH. The PUSCH carries data to be transmitted. After detecting the first signal sequence, the access network device also detects a DMRS in a second CG resource and receives a PUSCH on a slot 4-slot 6 adjacent to the second CG resource configured to the terminal in advance, and demodulates the PUSCH by using the detected DMRS to obtain data carried by the PUSCH.

It can be understood that, if the access network device does not detect the first signal sequence on the first CG resource, the access network device does not need to detect the second CG resource, and thus only needs to detect the first signal sequence, the number of the first signal sequences is small, and the detection complexity is low, so that the detection overhead of the access network device is saved while the reliability of receiving the terminal data is improved.

Further, as shown in fig. 8a, the access network device may send Downlink Control Information (DCI) to the terminal at slot7, where the DCI is used to indicate whether the access network device successfully receives and demodulates data sent by the terminal. And after receiving the DCI, the terminal stops transmitting data in the second CG resource.

As an alternative to S203, the terminal may also send Msg a on one or more random access time-frequency resources associated with the first time-frequency resource. Wherein the Msg a carries data to be transmitted. Specifically, as shown in fig. 8b, the access network device also configures the Msg a resource for the terminal. When the terminal finishes sending the first signal sequence, Msg A can be sent to the access network equipment on the adjacent slots 4-6, and the Msg A comprises a preamble and a PUSCH. The PUSCH carries data to be transmitted. And the access network equipment receives the Msg A on slots 4-6 after detecting the first signal sequence according to the configuration, and acquires the data carried by the PUSCH.

Further, the access network device may also pre-configure Msg B resources for the terminal. As shown in fig. 8B, the access network device may send Msg B to the terminal at slot7, where Msg B is used to indicate whether the access network device successfully receives the data sent by the terminal. And the terminal stops sending data after receiving the Msg B.

Further, in the configuration information described in step S201, the configuration information may further include indication information. The indication information is used for indicating whether to allow the Msg A to be sent on random access resources associated with SS/PBCH different from a first SS/PBCH, wherein the Msg A comprises data to be sent, and the first SS/PBCH is the SS/PBCH associated with the first time-frequency resource. Specifically, as shown in the application scenario diagram of the embodiment in fig. 9, a factory or the like includes a large number of terminals, and fig. 9 illustrates UEs 1 to 3. In NR, access network devices employ beamforming for signal transmission, and different SS/PBCHs may be transmitted using different beams. Wherein, the UEs 1-3 are within the beam coverage of the SS/PBCH1 (i.e., the first SS/PBCH of the present embodiment). As shown in fig. 8B, the access network device configures, for the terminal, the Msg a resource associated with SS/PBCH1 in slot4, the Msg a resource associated with SS/PBCH x in slot5, the Msg a resource associated with SS/PBCH y in slot6, and the Msg B resource associated with SS/PBCH1 in slot 7. If the access network equipment includes the indication information in the configuration information, the UEs 1-3 may send Msg a using the Msg a resource associated with the SS/PBCH x in slot5, and send Msg a using the Msg a resource associated with the SS/PBCH y in slot 6. That is, the Msg a resources on slot5 and slot6 are preempted by UEs 1 to 3 for transmitting data. After the access network device detects the first signal sequence, according to the configuration information, Msg a may also be detected on slot5 and slot6, and the data may be received. Therefore, the reliability of terminal data transmission is improved.

According to the data transmission method provided by the embodiment of the application, after receiving the DMRS indicating that the terminal has data to be transmitted, the access network device detects the CG resource or the Msg A resource associated with the first signal sequence, and receives the data transmitted by the terminal on the CG resource or the Msg A resource without detecting the CG resource or the Msg A resource all the time, so that the reliability of data transmission can be improved, and the detection overhead of the access network device can be reduced.

The embodiment shown in fig. 7 is described by taking the first signal sequence as DMRS, and in another embodiment, the first signal sequence may be UCI sequence. The flow is the same as that of the embodiment shown in fig. 7. Only the differences from the embodiment shown in fig. 7 will be described below:

when the terminal is in the RRC connected state, the access network device may pre-configure the terminal with a first time-frequency resource for transmitting the first signal sequence. The first time-frequency resource for transmitting the first signal sequence may include one or more. The first time-frequency resource may be a time-frequency resource for transmitting a PUCCH. The access network device may configure the PUCCH resources through RRC signaling, typically in UE-specific RRC signaling. The present embodiment may also be configured in common signaling, such as system information. After the terminal is configured with the PUCCH resource, the access network device performs detection on the configured PUCCH resource.

In this embodiment, the first signal sequence is UCI.

When UCI is used as the first signal sequence, the symbol length is preferably short, and the first signal sequence itself does not need to carry much information. Therefore, the format of the PUCCH format0 may be selected. Of course, the format of the selected PUCCH is not limited in the present application. The following description will be given taking PUCCH format0 as an example.

The number of information bits sent by the PUCCH format0 is 1-2, and one Resource Block (RB) may be occupied in a frequency domain and 1-2 symbols may be occupied in a time domain.

Further, the access network device may also configure parameters of PUCCH format0 as shown in table 2 below through RRC signaling:

table 2 RRC configuration parameters of PUCCH format0

When the terminal is in the RRC connected state, the access network device may also configure a cyclic shift offset value m different from the existing cyclic shift offset value m to the terminal through a higher layer signaling or the like_c(ii) a Or the terminal may pre-store a cyclic shift offset value m when leaving the factory_c. The cyclic shift value of the UCI sequence is the initial cyclic shift m₀And cyclic shift offset value m_cAnd (4) summing. The cyclic shift value of the UCI sequence is used to indicate that the terminal has data to be transmitted.

Further, the access network device may also pre-configure the terminal with a second CG resource, or Msg a resource. The second CG resource or Msg a resource is used for transmitting data to be transmitted. The second CG resource or Msg a resource configured by the access network device for each terminal may be different.

And when the terminal has data to be sent, sending the UCI sequence to access network equipment. The cyclic shift value of the UCI sequence is the initial cyclic shift m configured by the access network equipment₀And a predefined cyclic shift offset value m_cAnd (4) summing. Therefore, after receiving the UCI sequence, the access network equipment can know that the terminal has data to be sent. And then, the terminal sends the data to be sent on the pre-configured second CG resource or Msg A resource. And the access network equipment detects the second CG resource or the Msg A resource and receives data to be sent.

Fig. 10 is a schematic flow chart of a data transmission method according to an embodiment of the present application. The first signal sequence is a first random access preamble. Illustratively, the method may comprise the steps of:

s301, the access network equipment sends the broadcast message. The broadcast message includes configuration information of a first time-frequency resource for transmitting a first signal sequence.

Accordingly, the terminal receives the broadcast message.

The specific implementation of this step can refer to step S201 of the embodiment shown in fig. 7.

S302, the terminal sends a first random access preamble at a first random access opportunity.

Accordingly, the access network device detects the first random access preamble at the first random access occasion.

Optionally, before step S302, the access network device may perform resource configuration on the terminal. As shown in fig. 11, a schematic diagram of a random access resource configuration is shown, where the resource configuration includes two levels of ROs: a first-level RO and a second-level RO.

Where the first level RO comprises RO1, the RO1 corresponds to the first random access preamble set used in this embodiment to indicate the presence of data to be transmitted, and the RO1 may also correspond to the preamble set used in conventional 2-step RACH. It is understood that one RO corresponds to one leader set, and it can also be considered that one RO is associated with one leader set. The preambles in the set of preambles are sent on the RO. Illustratively, in fig. 11, the preamble set used in the conventional 2-step RACH includes 5 preambles from preamble 1-1 to preamble 1-5, and the first random access preamble set includes 2 preambles from preamble 2-1 to preamble 2-2 (referred to as the first random access preamble here), it can be seen that the number of preambles in the configured first random access preamble set is small, which can reduce the detection complexity of the access network device. Further, the preamble used in the conventional 2-step RACH correlates to the DMRS corresponding to PO 1. One preamble may correspond to one or more DMRSs, and a plurality of preambles may also correspond to one DMRS. Exemplarily, in fig. 11, PO1 corresponds to DMRSs 1-1 to DMRSs 1-4, and it is understood that one PO corresponds to one or more DMRSs, and may also be considered that one PO associates one or more DMRSs. The one or more DMRSs are transmitted on the PO. The DMRS1-1 can be associated with the preambles 1-1 to 1-3, and the DMRS1-2 can be associated with the preambles 1-4 to 1-5.

The access network device associates a preamble corresponding to the second-level RO with each first random access preamble in the first random access preamble set. Illustratively, in FIG. 11, the second level RO comprises RO2 and RO 3. RO2 corresponds to one or more preambles, e.g., RO2 corresponds to preambles 3-1 through 3-4, i.e., preambles 3-1 through 3-4 are sent on RO 2; RO3 corresponds to one or more preambles, e.g., RO3 corresponds to preambles 4-1 through 4-4, i.e., preamble 4-1 through 4-4 are sent on RO 3. Wherein the second-level RO (including RO2 and RO3) may be referred to as a second random access opportunity, and the preamble corresponding to RO2 may be referred to as a second random access preamble set. Specifically, each preamble in the first set of random access preambles is associated with a preamble corresponding to the second-level RO in such a way that preamble 2-1 can be associated with one or more preambles corresponding to RO 2; preamble 2-2 may be associated with one or more preambles corresponding to RO 3. I.e. the second random access occasion is associated with the first random access preamble or the second set of random access preambles is associated with the first random access preamble.

Further, one preamble in RO2 may be associated to one or more DMRSs corresponding to PO2, or multiple preambles corresponding to RO2 may be associated to one DMRS corresponding to PO 2. Exemplarily, in fig. 11, PO2 corresponds to DMRSs 2-1 to DMRSs 2-8 for eight DMRSs. For example, preamble 3-1 in RO2 may be associated with DMRS2-1 corresponding to PO2, preamble 3-2 corresponding to RO2 may be associated with DMRS2-2 and DMRS2-3 corresponding to PO2, preamble 3-3 and preamble 3-4 corresponding to RO2 may be associated with DMRS2-4 corresponding to PO2, and so on.

One preamble corresponding to RO3 may be associated to one or more DMRSs corresponding to PO3, or multiple preambles corresponding to RO3 may be associated to one DMRS corresponding to PO 3. Exemplarily, in fig. 11, PO3 corresponds to DMRSs 3-1 to DMRSs 3-8 for eight DMRSs. For example, preamble 4-1 corresponding to RO3 may be associated with DMRS4-1 corresponding to PO3, preamble 4-2 corresponding to RO3 may be associated with DMRS4-2 and DMRS4-3 corresponding to PO3, preamble 4-3 and preamble 4-4 corresponding to RO3 may be associated with DMRS4-4 corresponding to PO3, and so on.

In this embodiment, the POs 2 and PO3 are collectively referred to as the second uplink data transmission timing. The second uplink data transmission opportunity is associated with one of a second set of random access preambles.

In step S302, before the terminal has data to be sent and sends the data to the access network device, the terminal is always in a non-connected state, which can save power consumption of the terminal. And when the terminal has data to be sent, the terminal sends a first random access preamble at a first random access occasion according to the resource configuration. That is, the first signal sequence is specifically a first random access preamble. The first random access preamble is used for indicating that the terminal has data to be sent. The first random access preamble belongs to a first random access preamble set corresponding to the first random access opportunity. For example, the terminal transmits the preamble 2-1 at the RO1, or transmits the preamble 2-2, and the preamble 2-1 or the preamble 2-2 is used to indicate that the terminal has data to be transmitted.

The access network equipment detects the preambles in the conventional preamble pool at the first random access opportunity according to the resource configuration, and detects the preambles in the first random access preamble set. The detection complexity is lower due to the smaller number of preambles in the first set of random access preambles.

S303, the terminal sends a second random access preamble at a second random access time, where the second random access preamble belongs to a second random access preamble set corresponding to the second random access time.

Accordingly, the access network device detects the second random access preamble at the second random access occasion.

The terminal sends the first random access preamble at the first random access time, indicates that the terminal has data to be sent, and then sends the second random access preamble at the second random access time. Specifically, the terminal may determine one second random access preamble in the second random access preamble set according to the configured association relationship of the first random access preamble and the RO 2. For example, in fig. 11, the terminal transmits the preamble 2-1 at the RO1, determines the preambles 3-1 to 3-4 corresponding to the RO2 associated with the preamble 2-1, and transmits any one of the preambles 3-1 to 3-4 at the RO 2. For another example, the terminal transmits the preamble 2-2 at the RO1, determines the preambles 4-1 to 4-4 corresponding to the RO3 associated with the preamble 2-2, and transmits any one of the preambles 4-1 to 4-4 at the RO 3.

After the access network device detects the preamble in the first random access preamble set at the first random access time, the access network device further detects the second random access preamble at the second random access time according to the configured association relationship between the first random access preamble and the RO 2. And if the preamble in the first random access preamble set is not detected at the first random access opportunity, not detecting the preamble in the second random access preamble set. For example, assuming that the access network device detects preamble 2-1 at RO1 in step S302, the preamble is detected at RO2 associated with preamble 2-1 according to the above-described association relationship, and any one of preamble 3-1 to preamble 3-4 is detected. For another example, assuming that the access network device detects preamble 2-2 at RO1 in step S302, the preamble is detected at RO3 associated with preamble 2-2 and any one of preamble 4-1 to preamble 4-4 is detected according to the above-described association relationship.

S304, the terminal sends the PUSCH at a second uplink data transmission time associated with the second random access preamble, wherein the demodulation reference signal for demodulating the PUSCH belongs to a demodulation reference signal set corresponding to the second uplink data transmission time. The PUSCH carries data to be transmitted.

Accordingly, the access network device detects the DMRS for demodulating the PUSCH, and receives and demodulates the PUSCH.

In this embodiment, a 2-step RACH manner is adopted, so that when the terminal sends the second random access preamble at the second random access occasion, the terminal can send the PUSCH at the second uplink data transmission occasion associated with the second random access preamble without waiting for the feedback of the access network device. Specifically, the terminal determines a second uplink data transmission opportunity associated with the second random access preamble according to the sent second random access preamble. For example, in fig. 11, assuming that a terminal transmits a preamble 3-1 at RO2, and the preamble 3-1 is associated with DMRS2-1 corresponding to PO2, the terminal transmits DMRS2-1 and PUSCH at PO2 associated with the preamble 3-1, wherein DMRS2-1 is used for demodulating the PUSCH, and DMRS2-1 belongs to a DMRS set corresponding to PO 2. For another example, assuming that the terminal transmits the preamble 4-1 at the RO3 and the preamble 4-1 is associated with the DMRS3-1 corresponding to the PO3, the terminal transmits the DMRS3-1 and the PUSCH at the PO3 associated with the preamble 4-1, wherein the DMRS3-1 is used for demodulating the PUSCH and the DMRS3-1 belongs to the DMRS set corresponding to the PO 3. The PUSCH carries data to be transmitted.

And the access network equipment detects the DMRS at the second uplink data transmission occasion according to the configured incidence relation between the second random access preamble and the second uplink data transmission occasion and the detected second random access preamble, and demodulates the received PUSCH. For example, assuming that the access network device detects the preamble 3-1 at the RO2, according to the association of the preamble 3-1 and the DMRS2-1 corresponding to the PO2, the access network device detects the DMRS2-1 and receives the PUSCH at the PO2 associated with the preamble 3-1, and demodulates the PUSCH with the DMRS2-1 to acquire data carried by the PUSCH. For another example, assuming that the access network device detects the preamble 4-1 at the RO3, according to the association of the preamble 4-1 and the DMRS3-1 corresponding to the PO3, the access network device detects the DMRS3-1 and receives the PUSCH at the PO3 associated with the preamble 4-1, and demodulates the PUSCH with the DMRS3-1, thereby acquiring data carried by the PUSCH.

Further, after receiving the second random access preamble and the PUSCH, the access network device may send the MsgB to the terminal, which is used to indicate whether to successfully receive and demodulate the data carried by the PUSCH. And the terminal stops sending the data after receiving the MsgB.

This embodiment can be applied to scenarios where the TA is valid or invalid. By means of 2-step RACH, on the basis of conventional preamble detection overhead, the number of preambles needing to be detected more is small, and detection overhead and complexity of access network equipment are small.

According to the data transmission method provided by the embodiment of the application, after receiving a first random access preamble indicating that a terminal has data to be transmitted at a first random access time, an access network device detects a second random access preamble at a second random access time according to the configuration of random access resources, and detects a DMRS and demodulates data carried in a PUSCH at a second uplink data transmission time associated with the second random access preamble, so that the reliability of data transmission can be improved, and the detection overhead of the access network device can be reduced.

It is to be understood that, in the above embodiments, the method and/or the steps implemented by the terminal may also be implemented by a component (e.g., a chip or a circuit) that can be used for the terminal; the methods and/or steps implemented by the access network device may also be implemented by components (e.g., chips or circuits) that may be used in the access network device.

The above-mentioned scheme provided by the embodiment of the present application is introduced mainly from the perspective of interaction between network elements. Correspondingly, the embodiment of the application also provides a data transmission device, and the data transmission device is used for realizing the various methods. The data transmission device may be a terminal in the above method embodiment, or a device including the above terminal device, or a component that can be used for the terminal device; alternatively, the data transmission device may be the access network device in the above method embodiment, or a device including the above access network device, or a component that can be used for the access network device. It is understood that the data transmission device includes hardware structures and/or software modules for performing the respective functions in order to realize the functions. Those of skill in the art would readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In the embodiment of the present application, the data transmission device may be divided into the functional modules according to the method embodiments, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. It should be noted that, in the embodiment of the present application, the division of the module is schematic, and is only one logic function division, and there may be another division manner in actual implementation.

Fig. 12 is a schematic view of another structure of a data transmission device 600 according to an embodiment of the present application. The data transmission apparatus 600 may be the terminal in the above-described embodiment. The data transmission device 600 includes: a transceiver unit 61; wherein:

a transceiver unit 61, configured to transmit a first signal sequence, where the first signal sequence is used to indicate that the apparatus has data to be transmitted;

the transceiver unit 61 is further configured to transmit the data to be transmitted on a first transmission resource associated with the first signal sequence, where the first transmission resource includes one or more of the following resources: configured authorized CG resources and random access resources.

In one possible implementation, the random access resource includes the PRACH time-frequency resource and a physical uplink shared channel, PUSCH, time-frequency resource.

In yet another possible implementation, the transceiver unit 61 is further configured to receive a broadcast message, where the broadcast message includes configuration information of a first time-frequency resource, and the first time-frequency resource is used for transmitting the first signal sequence.

In yet another possible implementation, the transceiver unit 61 is further configured to transmit the first signal sequence on one or more of the first time-frequency resources.

In yet another possible implementation, the first signal sequence is an uplink control information UCI sequence, and a cyclic shift value of the UCI sequence is used to indicate that the terminal has data to be transmitted.

In yet another possible implementation, the transceiver unit 61 is further configured to send a physical uplink shared channel, PUSCH, on one or more second CG resources associated with the first time-frequency resource, or send a random access message a on one or more random access time-frequency resources associated with the first time-frequency resource, where the PUSCH or the random access message a carries the data to be sent.

In yet another possible implementation, the first signal sequence is specifically a first random access preamble;

the transceiver unit 61 is configured to send the first random access preamble at a first random access time, where the first random access preamble is used to indicate that the terminal has data to be sent, and the first random access preamble belongs to a first random access preamble set corresponding to the first random access time;

the transceiver unit 61 is further configured to send a second random access preamble at a second random access occasion, where the second random access preamble belongs to a second random access preamble set corresponding to the second random access occasion;

the transceiver unit 61 is further configured to send a PUSCH at a second uplink data transmission occasion associated with the second random access preamble, where a demodulation reference signal used for demodulating the PUSCH belongs to a demodulation reference signal set corresponding to the second uplink data transmission occasion, and the PUSCH carries the data to be sent;

wherein the second random access occasion is associated with the first random access preamble, or the second set of random access preambles is associated with the first random access preamble.

In yet another possible implementation, the configuration information further includes indication information, where the indication information is used to indicate whether to allow the data to be transmitted on a random access resource associated with an SS/PBCH different from a first synchronization signal/physical broadcast channel block, SS/PBCH, where the first SS/PBCH is the SS/PBCH associated with the first time/frequency resource.

The transceiver unit 61 may be implemented as described in the embodiments shown in fig. 6, fig. 7, and fig. 10.

According to the data transmission device provided by the embodiment of the application, when data to be transmitted exists, the data transmission device firstly transmits the first signal sequence to indicate that the data to be transmitted exists in the data transmission device, and then transmits the data to be transmitted to the access network equipment on the first transmission resource associated with the first signal sequence, so that the access network equipment does not need to detect the first transmission resource all the time, and the detection overhead of the access network equipment can be reduced while the reliability of data transmission of the data transmission device is improved.

Fig. 13 is a schematic structural diagram of a data transmission device 700 according to an embodiment of the present application. The data transmission device 700 may be the access network equipment in the above embodiments. The data transmission device 700 includes: a transceiver unit 71; wherein:

a transceiving unit 71, configured to receive a first signal sequence, where the first signal sequence is used to indicate that there is data to be sent in a terminal;

the transceiver unit 71 is further configured to receive the data on a first transmission resource associated with the first signal sequence, where the first transmission resource includes one or more of the following resources: configured authorized CG resources and random access resources.

In yet another possible implementation, the transceiver unit 71 is further configured to transmit a broadcast message, where the broadcast message includes configuration information of a first time-frequency resource, and the first time-frequency resource is used for the terminal to transmit the first signal sequence.

In yet another possible implementation, the transceiver unit 71 is further configured to receive the first signal sequence on one or more of the first time-frequency resources.

In yet another possible implementation, the transceiver unit 71 is further configured to receive a physical uplink shared channel, PUSCH, on one or more second CG resources associated with the first time-frequency resource, or receive a random access message a on one or more random access time-frequency resources associated with the first time-frequency resource, where the PUSCH or the random access message a carries the data.

the transceiver unit 71 is further configured to receive the first random access preamble at a first random access occasion, where the first random access preamble is used to indicate that there is data to be sent in the terminal, and the first random access preamble belongs to a first random access preamble set corresponding to the first random access occasion;

the transceiver unit 71 is further configured to receive a second random access preamble at a second random access occasion, where the second random access preamble belongs to a second random access preamble set corresponding to the second random access occasion;

the transceiver unit 71 is further configured to receive a PUSCH at a second uplink data transmission occasion associated with the second random access preamble, where a demodulation reference signal used for demodulating the PUSCH belongs to a demodulation reference signal set corresponding to the second uplink data transmission occasion, and the PUSCH carries the data to be sent;

The transceiver 71 may be implemented as described in relation to the access network device in the embodiments shown in fig. 6, fig. 7, and fig. 10.

According to the data transmission device provided by the embodiment of the application, after receiving a first signal sequence indicating that a terminal has data to be transmitted, the data transmission device detects a first transmission resource associated with the first signal sequence, and receives the data transmitted by the terminal on the first transmission resource without detecting the first transmission resource all the time, so that the reliability of data transmission of the terminal can be improved, and meanwhile, the detection overhead of the data transmission device can be reduced.

Fig. 14 shows a simplified structural diagram of a terminal. For ease of understanding and illustration, in fig. 14, the terminal is exemplified by a mobile phone. As shown in fig. 14, the terminal includes a processor, a memory, a radio frequency circuit, an antenna, and an input-output device. The processor is mainly used for processing communication protocols and communication data, controlling the terminal, executing software programs, processing data of the software programs and the like. The memory is used primarily for storing software programs and data. The radio frequency circuit is mainly used for converting baseband signals and radio frequency signals and processing the radio frequency signals. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are used primarily for receiving data input by a user and for outputting data to the user. It should be noted that some kinds of terminals may not have input/output devices.

When data needs to be sent, the processor performs baseband processing on the data to be sent and outputs baseband signals to the radio frequency circuit, and the radio frequency circuit performs radio frequency processing on the baseband signals and sends the radio frequency signals to the outside in the form of electromagnetic waves through the antenna. When data is sent to the terminal, the radio frequency circuit receives radio frequency signals through the antenna, converts the radio frequency signals into baseband signals and outputs the baseband signals to the processor, and the processor converts the baseband signals into the data and processes the data. For ease of illustration, only one memory and processor are shown in FIG. 14. In an actual end product, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or a storage device, etc. The memory may be provided independently of the processor, or may be integrated with the processor, which is not limited in this embodiment.

In the embodiment of the present application, an antenna and a radio frequency circuit having a transceiving function may be regarded as a receiving unit and a transmitting unit (which may also be collectively referred to as a transceiving unit) of a terminal, and a processor having a processing function may be regarded as a processing unit of the terminal. As shown in fig. 14, the terminal includes a transceiving unit 81 and a processing unit 82. The transceiving unit 81 may also be referred to as a receiver/transmitter (transmitter), receiver/transmitter circuitry, etc. The processing unit 82 may also be referred to as a processor, processing board, processing module, processing device, or the like. The transceiver unit 81 is used to realize the functions of the transceiver unit 61 in the embodiment shown in fig. 12.

For example, in one embodiment, the transceiving unit 81 is configured to perform the functions performed by the terminal in steps S101 and S102 of the embodiment shown in fig. 6.

For example, in yet another embodiment, the transceiving unit 81 is configured to perform the functions performed by the terminal in steps S201 to S203 of the embodiment shown in fig. 7.

For example, in a further embodiment, the transceiving unit 81 is configured to perform the functions performed by the terminal in steps S301 to S304 of the embodiment shown in fig. 10.

Fig. 15 shows a simplified schematic structure of an access network device. The access network equipment includes a radio frequency signal transceiving and converting portion 92, which includes a transceiving unit 91. The radio frequency signal receiving, transmitting and converting part is mainly used for receiving and transmitting radio frequency signals and converting the radio frequency signals and baseband signals; the 92 part is mainly used for baseband processing, controlling access network equipment and the like. The transceiving unit 91 may also be referred to as a receiver/transmitter (transmitter), receiver/transmitter circuitry, etc. Part 92 is typically a control center of the access network device, which may be generally referred to as a processing unit, for controlling the source access network device to perform the steps described above with respect to the access network device in fig. 3 or fig. 4. Reference is made in particular to the description of the relevant part above. The transceiving unit 91 may be used to implement the functionality of the transceiving unit 71 in the embodiment shown in fig. 13.

Portion 92 may include one or more boards, each of which may include one or more processors and one or more memories, the processors being configured to read and execute programs in the memories to implement baseband processing functions and control of access network devices. If a plurality of single boards exist, the single boards can be interconnected to increase the processing capacity. As an alternative implementation, multiple boards may share one or more processors, multiple boards may share one or more memories, or multiple boards may share one or more processors at the same time.

For example, in one embodiment, the transceiving unit 91 is configured to perform the functions performed by the access network device in steps S101 and S102 of the embodiment shown in fig. 6.

For example, in another embodiment, the transceiving unit 91 is configured to perform the functions performed by the access network device in steps S201 to S203 of the embodiment shown in fig. 7.

For example, in another embodiment, the transceiving unit 91 is configured to perform the functions performed by the access network device in steps S301 to S304 of the embodiment shown in fig. 10.

The embodiment of the present application also provides a computer-readable storage medium, in which a computer program or instructions are stored, and when the computer program or instructions are executed, the method in the above embodiment is implemented.

Embodiments of the present application also provide a computer program product containing instructions, which when executed on a computer, cause the computer to execute the method in the above embodiments.

The embodiment of the application also provides a data transmission system which comprises the data transmission device.

It should be noted that one or more of the above units or units may be implemented in software, hardware or a combination of both. When any of the above units or units are implemented in software, which is present as computer program instructions and stored in a memory, a processor may be used to execute the program instructions and implement the above method flows. The processor may be built in a system on chip (SoC) or ASIC, or may be a separate semiconductor chip. The processor may further include a necessary hardware accelerator such as a Field Programmable Gate Array (FPGA), a Programmable Logic Device (PLD), or a logic circuit for implementing a dedicated logic operation, in addition to a core for executing software instructions to perform operations or processing.

When the above units or units are implemented in hardware, the hardware may be any one or any combination of a CPU, a microprocessor, a Digital Signal Processing (DSP) chip, a Micro Controller Unit (MCU), an artificial intelligence processor, an ASIC, an SoC, an FPGA, a PLD, a dedicated digital circuit, a hardware accelerator, or a non-integrated discrete device, which may run necessary software or is independent of software to perform the above method flow.

Optionally, an embodiment of the present application further provides a chip system, including: at least one processor coupled to the memory through the interface, and an interface, the at least one processor causing the system-on-chip to perform the method of any of the above method embodiments when the at least one processor executes the computer program or instructions in the memory. Optionally, the chip system may be composed of a chip, and may also include a chip and other discrete devices, which is not specifically limited in this embodiment of the present application.

It should be understood that in the description of the present application, unless otherwise indicated, "/" indicates a relationship where the objects associated before and after are an "or", e.g., a/B may indicate a or B; wherein A and B can be singular or plural. Also, in the description of the present application, "a plurality" means two or more than two unless otherwise specified. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or multiple. In addition, in order to facilitate clear description of technical solutions of the embodiments of the present application, in the embodiments of the present application, terms such as "first" and "second" are used to distinguish the same items or similar items having substantially the same functions and actions. Those skilled in the art will appreciate that the terms "first," "second," etc. do not denote any order or quantity, nor do the terms "first," "second," etc. denote any order or importance. Also, in the embodiments of the present application, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or illustrations. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present relevant concepts in a concrete fashion for ease of understanding.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented using a software program, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. The procedures or functions described in accordance with the embodiments of the present application are all or partially generated upon loading and execution of computer program instructions on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or can comprise one or more data storage devices, such as a server, a data center, etc., that can be integrated with the medium. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

While the present application has been described in connection with various embodiments, other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed application, from a review of the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the word "a" or "an" does not exclude a plurality. A single processor or other unit may fulfill the functions of several items recited in the claims. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.

Although the present application has been described in conjunction with specific features and embodiments thereof, it will be evident that various modifications and combinations can be made thereto without departing from the spirit and scope of the application. Accordingly, the specification and figures are merely exemplary of the present application as defined in the appended claims and are intended to cover any and all modifications, variations, combinations, or equivalents within the scope of the present application. It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A data transmission apparatus, characterized in that the apparatus comprises:

a transceiving unit, configured to transmit a first signal sequence, where the first signal sequence is used to indicate that the apparatus has data to be transmitted;

the transceiver unit is further configured to transmit the data to be transmitted on a first transmission resource associated with the first signal sequence, where the first transmission resource includes one or more of the following resources: configured authorized CG resources and random access resources.

2. The apparatus of claim 1, wherein the random access resources comprise Physical Random Access Channel (PRACH) time-frequency resources and Physical Uplink Shared Channel (PUSCH) time-frequency resources.

3. The apparatus of claim 1 or 2, wherein:

the transceiver unit is further configured to receive a broadcast message, where the broadcast message includes configuration information of a first time-frequency resource, and the first time-frequency resource is used to transmit the first signal sequence.

4. The apparatus of claim 3, wherein the transceiver unit is further configured to transmit the first signal sequence on one or more of the first time/frequency resources.

5. The apparatus of claim 3 or 4, wherein the first signal sequence is a demodulation reference signal, and the first time-frequency resource is a time-frequency resource used for transmitting the demodulation reference signal in a first CG resource.

6. The apparatus according to claim 3 or 4, wherein the first signal sequence is an uplink control information, UCI, sequence, and a cyclic shift value of the UCI sequence is used to indicate that the terminal has data to be transmitted.

7. The apparatus according to claim 3 or 4, wherein the transceiver unit is further configured to transmit a physical uplink shared channel, PUSCH, on one or more second CG resources associated with the first time-frequency resource, or transmit a random access message a on one or more random access time-frequency resources associated with the first time-frequency resource, where the PUSCH or the random access message a carries the data to be transmitted.

8. The apparatus according to any of claims 1-4, wherein the first signal sequence is specifically a first random access preamble;

the transceiver unit is configured to send the first random access preamble at a first random access occasion, where the first random access preamble is used to indicate that the terminal has data to be sent, and the first random access preamble belongs to a first random access preamble set corresponding to the first random access occasion;

the transceiver unit is further configured to send a second random access preamble at a second random access occasion, where the second random access preamble belongs to a second random access preamble set corresponding to the second random access occasion;

the transceiver unit is further configured to send a PUSCH at a second uplink data transmission occasion associated with the second random access preamble, where a demodulation reference signal used for demodulating the PUSCH belongs to a demodulation reference signal set corresponding to the second uplink data transmission occasion, and the PUSCH carries the data to be sent;

9. The apparatus of any of claims 1-3, wherein the configuration information further comprises indication information indicating whether the data to be transmitted is allowed to be transmitted on random access resources associated with a different SS/PBCH than a first synchronization signal/physical broadcast channel block (SS/PBCH), wherein the first SS/PBCH is the SS/PBCH associated with the first time/frequency resource.

10. A data transmission apparatus, characterized in that the apparatus comprises:

the terminal comprises a transceiving unit, a receiving unit and a transmitting unit, wherein the transceiving unit is used for receiving a first signal sequence which is used for indicating that the terminal has data to be transmitted;

the transceiver unit is further configured to receive the data on a first transmission resource associated with the first signal sequence, where the first transmission resource includes one or more of: configured authorized CG resources and random access resources.

11. The apparatus of claim 10, wherein the random access resources comprise Physical Random Access Channel (PRACH) time-frequency resources and Physical Uplink Shared Channel (PUSCH) time-frequency resources.

12. The apparatus according to claim 10 or 11, wherein the transceiver unit is further configured to transmit a broadcast message, and the broadcast message includes configuration information of a first time-frequency resource, and the first time-frequency resource is used for the terminal to transmit the first signal sequence.

13. The apparatus of claim 12, wherein the transceiver unit is further configured to receive the first signal sequence on one or more of the first time/frequency resources.

14. The apparatus of claim 12 or 13, wherein the first signal sequence is a demodulation reference signal, and the first time-frequency resource is a time-frequency resource used for transmitting the demodulation reference signal in a first CG resource.

15. The apparatus of claim 12 or 13, wherein the first signal sequence is an uplink control information, UCI, sequence, and a cyclic shift value of the UCI sequence is used to indicate that the terminal has data to be transmitted.

16. The apparatus according to claim 14 or 15, wherein the transceiver unit is further configured to receive a physical uplink shared channel, PUSCH, on one or more second CG resources associated with the first time-frequency resource, or receive a random access message, a, on one or more random access time-frequency resources associated with the first time-frequency resource, wherein the PUSCH or the random access message, a carries the data.

17. The apparatus according to any of claims 10-13, wherein the first signal sequence is specifically a first random access preamble;

the transceiver unit is further configured to receive the first random access preamble at a first random access occasion, where the first random access preamble is used to indicate that the terminal has data to be sent, and the first random access preamble belongs to a first random access preamble set corresponding to the first random access occasion;

the transceiver unit is further configured to receive a second random access preamble at a second random access occasion, where the second random access preamble belongs to a second random access preamble set corresponding to the second random access occasion;

the transceiver unit is further configured to receive a PUSCH at a second uplink data transmission occasion associated with the second random access preamble, where a demodulation reference signal used for demodulating the PUSCH belongs to a demodulation reference signal set corresponding to the second uplink data transmission occasion, and the PUSCH carries the data to be sent;

18. The apparatus of any of claims 10-17, wherein the configuration information further comprises indication information indicating whether the data to be transmitted is allowed to be transmitted on random access resources associated with a different SS/PBCH than a first synchronization signal/physical broadcast channel block, SS/PBCH, associated with the first time/frequency resource.