WO2018145558A1

WO2018145558A1 - Data transmission method and device

Info

Publication number: WO2018145558A1
Application number: PCT/CN2018/072543
Authority: WO
Inventors: 邹伟; 吴昱民
Original assignee: 中兴通讯股份有限公司
Priority date: 2017-02-09
Filing date: 2018-01-15
Publication date: 2018-08-16
Also published as: CN108418661B; CN108418661A

Abstract

The present invention provides a data transmission method and device. The method comprises: a user equipment (UE) in an inactive state obtains downlink control information (DCI) by using a specified radio network temporary identifier (RNTI) value; the UE performs, according to the DCI, an operation of receiving a data packet sent by a base station. The present invention resolves the problem in the related art of being unable to effectively perform downlink data transmission caused by uplink data in an inactive state, and achieves the technical effect of efficient transmission of downlink data.

Description

Data transmission method and device

Technical field

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

Background technique

The fifth-generation mobile communication technology (5th Generation, referred to as 5G) under study by the 3rd Generation Partner Project (3GPP) puts high requirements on control plane delay and requires user equipment. (User Equipment, referred to as UE) can enter the connected state within 10ms time range and start to send data. However, in the traditional Long Term Evolution (LTE) system, the idle state to the connected state need to undergo many processes such as initial random access, connection establishment, registration authentication, etc., which makes it difficult for the UE to enter within 10 ms. Connection state. To overcome this problem, 3GPP introduced a new UE state, inactive state. When the UE enters the state from the connected state, the anchor eNB and the core network that the user initially connects will maintain all the connection configurations of the user and process the uplink, so that the user only needs to pass the random access on the air interface. The simple process of completing the air interface configuration can directly enter the connected state. In the meantime, in order to save power, the UE does not configure a Physical Uplink Control Channel (PUCCH) and a Sounding resource in an inactive state, and adopts a measurement and cell selection policy similar to the idle state. Therefore, the inactive user may lose the uplink synchronization during the macro cell movement, that is, the Timing advance used for the uplink transmission may not be used again due to the movement, and must be re-executed by random access or the like. Time advance measurement.

In addition to a large amount of data transmission in a short time, many applications also have a background business flow. This type of service flow generally has a relatively low frequency of sending data packets, and the data packets are relatively small. For these background services, if the UE in the inactive state can support direct data transmission, that is, a small amount of data transmission can be performed without transferring to the connection state, the signaling overhead and power consumption of the UE can be further saved. Therefore, how to support direct data transmission of inactive users in LTE systems is a problem worth studying. In the current 3GPP discussion, the uplink direct data transmission may use unlicensed transmission, that is, the base station directly allocates a part of the wireless resources for the transmission of the uplink small data, and the part of the resources may be allocated to a certain UE, or It is allocated to multiple UEs for uplink data transmission; the downlink direct data transmission may adopt a mode in which small data is carried in a paging message.

In some cases, for unlicensed uplink direct data transmission, the base station needs to return an ACK (ACKnowledgement) message to inform the user that the uplink data has been successfully received. In addition, corresponding to some applications, the receiving end may return some data packets immediately after receiving the uplink data of the UE. Therefore, downlink direct data transmission in an inactive state caused by the uplink is very common. In this case, since the base station has received the uplink data packet before the downlink data transmission, the base station knows that the UE is within its coverage. In this case, some optimized methods can be used to send downlink data.

In the related art, the problem of downlink data transmission caused by uplink data cannot be effectively performed in an inactive state, and an effective solution has not been proposed.

Summary of the invention

The embodiments of the present disclosure provide a data transmission method and apparatus to solve at least the problem that the downlink data transmission caused by the uplink data cannot be effectively performed in an inactive state in the related art.

According to an embodiment of the present disclosure, a data transmission method is provided, including: a user equipment UE in an inactive state acquires downlink control information DCI using a specified radio network temporary identifier RNTI value; and the UE performs a receiving base station according to the DCI. The operation of the sent packet.

Optionally, the specified RNTI value is determined by at least one of the following radio resources used by the UE uplink transmission: a time domain location, a frequency domain location.

Optionally, the DCI includes at least one of the following: information about whether the UE is in an inactive state, and information about whether the UE is in a connected state.

Optionally, if the UE does not receive the data packet sent by the base station according to the DCI, the method further includes: the UE retransmitting the uplink data by using an unlicensed resource according to the unauthorised sending message, where the non-authorization The sending message includes at least one of the following: the radio resource location information that is not authorized to be sent, the adjustment code selection information that is not authorized to be sent, the uplink power control information that is not authorized to be sent, and the RNTI value information that is used for the downlink response that is not authorized to be sent, and is not authorized. The retransmission waiting time sent, the physical downlink control channel PDCCH listening time that is not authorized to be sent.

Optionally, the unlicensed sending message is determined by at least one of: a broadcast channel, a broadcast channel dedicated to a non-active UE, and dedicated radio resource control RRC signaling.

Optionally, the data packet is composed of at least one of the following: a length indication, a UE ID, an ACK information, data information, and a cyclic redundancy check CRC information.

Optionally, the cyclic redundancy check CRC information includes at least one of: a check code for performing CRC check on an entire downlink data block that includes different UE data; and separately providing a CRC check for data portions of different UEs. Check code.

According to an embodiment of the present disclosure, a data transmission method is provided, including: a base station transmitting downlink control information DCI to a user equipment UE, where the DCI is used by the UE to receive a data packet sent by a base station according to the DCI; The DCI is obtained by temporarily identifying the RNTI value by the specified wireless network.

According to another embodiment of the present disclosure, there is provided a data transmission apparatus comprising: an acquisition module configured to acquire downlink control information DCI using a specified radio network temporary identifier RNTI value; and a receiving module configured to perform reception according to the DCI The operation of the data packet sent by the base station.

Optionally, the device further includes: a sending module, configured to: when the UE does not receive the data packet sent by the base station according to the DCI, use the unlicensed resource to resend the uplink data according to the unlicensed sending message, where The unauthorized transmission message includes at least one of the following: radio resource location information that is not authorized to be sent, adjustment code selection information that is not authorized to be sent, uplink power control information that is not authorized to be sent, and RNTI used for downlink response that is not authorized to be sent. Value information, retransmission waiting time for unauthorized transmission, and physical downlink control channel PDCCH listening time for unauthorized transmission.

According to another embodiment of the present disclosure, a data transmission apparatus is provided, including: a sending module, configured to send downlink control information DCI to a user equipment UE, where the DCI is used by the UE to receive, according to the DCI, a base station a data packet; wherein the DCI is obtained by temporarily identifying a RNTI value by a designated wireless network.

According to still another embodiment of the present disclosure, a storage medium is also provided. The storage medium is arranged to store program code for performing the following steps:

The user equipment UE in the inactive state acquires downlink control information DCI using the specified radio network temporary identifier RNTI value; and the UE performs an operation of receiving the data packet sent by the base station according to the DCI.

Optionally, the storage medium is further configured to store program code for performing the following steps: the base station sends downlink control information DCI to the user equipment UE, where the DCI is used by the UE to receive the data packet sent by the base station according to the DCI; The DCI is obtained by temporarily identifying the RNTI value by the specified wireless network.

Through the disclosure, the user equipment UE in the inactive state acquires the downlink control information DCI by using the specified radio network temporary identifier RNTI value; the UE performs the operation of receiving the data packet sent by the base station according to the DCI, and solves the problem that the related technology cannot be inactive. The state effectively performs the problem of downlink data transmission caused by the uplink data, and achieves the technical effect of efficient transmission of downlink data.

DRAWINGS

The drawings described herein are provided to provide a further understanding of the present disclosure, which is a part of the present disclosure, and the description of the present disclosure and the description thereof are not intended to limit the disclosure. In the drawing:

1 is a block diagram showing the hardware structure of a mobile terminal of a data transmission method according to an embodiment of the present disclosure;

2 is a flow chart of a data transmission method in accordance with an embodiment of the present disclosure;

3 is a flowchart of an inactive state UE performing uplink data transmission and receiving a downlink ACK or data using a common RNTI value, according to an embodiment of the present disclosure;

4 is a flowchart of performing uplink data retransmission by an inactive state UE according to an embodiment of the present disclosure;

5 is a schematic diagram of a downlink data format in which all inactive state UEs share a CRC check code in the same downlink data block according to an embodiment of the present disclosure;

6 is a schematic diagram of a downlink data format in which different inactive state UEs use different CRC check codes in the same downlink data block according to an embodiment of the present disclosure;

7 is a schematic diagram of supporting downlink data formats of different lengths according to an embodiment of the present disclosure;

FIG. 8 is a structural block diagram of a data transmission device according to an embodiment of the present disclosure; FIG.

9 is a structural block diagram (1) of a data transmission device according to an embodiment of the present disclosure;

FIG. 10 is a flowchart of another data transmission method according to an embodiment of the present disclosure; FIG.

11 is a block diagram showing the structure of another data transmission device according to an embodiment of the present disclosure.

detailed description

The present disclosure will be described in detail below with reference to the drawings in conjunction with the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

It is to be understood that the terms "first", "second", and the like in the specification and claims of the present disclosure are used to distinguish similar objects, and are not necessarily used to describe a particular order or order.

Example 1

The method embodiment provided by Embodiment 1 of the present application can be executed in a mobile terminal, a computer terminal or the like. Taking a mobile terminal as an example, FIG. 1 is a hardware structural block diagram of a mobile terminal of a data transmission method according to an embodiment of the present disclosure. As shown in FIG. 1, mobile terminal 10 may include one or more (only one shown in FIG. 1) processor 102 (processor 102 may include, but is not limited to, a processing device such as a microprocessor MCU or a programmable logic device FPGA. A memory 104 for storing data, and a transmission device 106 for communication functions. It will be understood by those skilled in the art that the structure shown in FIG. 1 is merely illustrative and does not limit the structure of the above electronic device. For example, the mobile terminal 10 may also include more or fewer components than those shown in FIG. 1, or have a different configuration than that shown in FIG.

The memory 104 can be used to store software programs and modules of application software, such as program instructions/modules corresponding to the data transfer method in the embodiment of the present disclosure, and the processor 102 executes various programs by running software programs and modules stored in the memory 104. Functional application and data processing, that is, the above method is implemented. Memory 104 may include high speed random access memory, and may also include non-volatile memory such as one or more magnetic storage devices, flash memory, or other non-volatile solid state memory. In some examples, memory 104 may further include memory remotely located relative to processor 102, which may be connected to mobile terminal 10 over a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

Transmission device 106 is for receiving or transmitting data via a network. The above-described network specific example may include a wireless network provided by a communication provider of the mobile terminal 10. In one example, the transmission device 106 includes a Network Interface Controller (NIC) that can be connected to other network devices through a base station to communicate with the Internet. In one example, the transmission device 106 can be a Radio Frequency (RF) module for communicating with the Internet wirelessly.

In this embodiment, a data transmission method running on the mobile terminal is provided. FIG. 2 is a flowchart of a data transmission method according to an embodiment of the present disclosure. As shown in FIG. 2, the process includes the following steps:

Step S202, the user equipment UE in the inactive state acquires the downlink control information DCI using the specified radio network temporary identifier RNTI value;

Step S204, the UE performs an operation of receiving a data packet sent by the base station according to the DCI.

Optionally, the application scenario of the foregoing data transmission method includes, but is not limited to, a Long-Term Evolution (LTE) system, in which the user equipment UE in the inactive state uses the specified wireless network. Temporarily identifying the RNTI value to obtain the downlink control information DCI, and the UE performs the operation of receiving the data packet sent by the base station according to the DCI, and solves the problem that the downlink data transmission caused by the uplink data cannot be effectively performed in the inactive state in the related art, and the problem is achieved. The technical effect of efficient transmission of downlink data.

The present embodiment will be exemplified below with reference to specific examples.

The technical problem to be solved by the present disclosure is how to effectively perform downlink data transmission caused by uplink data in an inactive state. For this reason, the present disclosure proposes that the UE in the inactive state obtains the downlink data directly from the Physical Downlink Control Channel (PDCCH) by using a public network temporary identifier (RNTI). The downlink control information (Downlink Control Information, DCI for short) is required, and then the UE directly receives the data packet sent by the base station in the Physical Downlink Shared Channel (PDSCH) according to the downlink control information, and keeps the packet in the non- Active state.

Optionally, the information of the specific RNTI may be specified by using a protocol, or may be delivered to the UE in a System Information Blocks (SIB) message. Optionally, the foregoing specific RNTI may be shared by multiple or all UEs in an inactive state. Optionally, the specific RNTI may be determined according to a time domain and/or a frequency domain location of a radio resource used by the UE uplink transmission. Optionally, the specific RNTI decision mode may be specified by a protocol or indicated in a system broadcast message. Optionally, the information about the specific RNTI may be the same as the original RA-RNTI information of the LTE system. At this time, the base station only needs to indicate in the broadcast information whether the information of the specific RNTI is the same as the RA-RNTI information.

Optionally, the UE does not receive the ACK and/or subsequent data of the base station within a certain time range, and the UE retransmits the uplink data by using the unlicensed resource according to the unlicensed sending information. Optionally, the UE starts a retransmission timer after sending the uplink data. If the ACK information and/or subsequent data of the base station are still not received after the timer expires, the UE retransmits the uplink data.

Since all inactive UEs use the common RNTI to demodulate the downlink data, the base station must identify the target user of the transmitted data in the downlink data. The specific packet format of each UE may include one or more of the following: length indication, UE ID, ACK information, data information, and CRC check information. Optionally, the base station may provide a CRC check code for performing CRC check on the entire downlink data block including different user data. Optionally, the base station may separately provide a CRC check code for data portions of different users.

Optionally, subsequent ACK information and/or subsequent data of the downlink data may be sent in an unlicensed transmission resource broadcast by the base station by using an unauthorised transmission manner. Optionally, subsequent ACK information and/or subsequent data of the downlink data may be sent by a subsequent uplink radio resource configured by the base station in the downlink data part.

Through the foregoing method, the UE in the inactive state obtains the downlink control information (DCI) of the downlink data directly from the PDCCH by using the common RNTI, and then the UE directly receives the data packet sent by the base station in the PDSCH according to the downlink control information, and remains inactive. status. In this way, the UE in the inactive state does not need to frequently switch between the connected state and the inactive state, which saves a lot of signaling overhead. Correspondingly, the power consumption of the inactive UE is also reduced.

In an optional implementation manner, the specified RNTI value is determined by at least one of the following radio resources used by the UE for uplink transmission: a time domain location, a frequency domain location.

The above DCI includes at least one of the following: information on whether the UE is in an inactive state, and information on whether the UE is in a connected state.

Optionally, if the UE does not receive the data packet sent by the base station according to the DCI, the method further includes the following steps:

In step S11, the UE retransmits the uplink data by using the unlicensed resource according to the unlicensed sending message, where the unlicensed sending message includes at least one of the following: unauthorized transmitting radio resource location information, and unauthorized sending adjusting code selecting information, The uplink power control information that is authorized to be sent, the RNTI value information used for the unsolicited downlink response, the retransmission waiting time for unauthorized transmission, and the PDCCH listening time for the unlicensed physical downlink control channel.

It should be noted that the foregoing unlicensed sending message is determined by at least one of the following: a broadcast channel, a broadcast channel dedicated to the inactive UE, and dedicated radio resource control RRC signaling.

In an optional implementation manner, the foregoing data packet is composed of at least one of the following: a length indication, a UE ID, an ACK information, data information, and a cyclic redundancy check CRC information.

Optionally, the cyclic redundancy check CRC information includes at least one of the following: a check code for performing CRC check on the entire downlink data block including different UE data; and separately providing a CRC check for the data portion of different UEs. Code verification.

3 is a flow diagram of an inactive state UE performing uplink data transmission and receiving a downlink ACK or data using a common RNTI value, in accordance with an embodiment of the present disclosure. As shown in Figure 3, the specific implementation process is as follows:

Step S301, the user entering the inactive state listens to the unlicensed sending information sent by the base station. The information may include one or more of the following: radio resource location information that is not authorized to be sent, adjustment code selection information that is not authorized to be sent, uplink power control information that is not authorized to be sent, and RNTI used for downlink response that is not authorized to be sent. Value information, retransmission waiting time for unauthorized transmission, subsequent PDCCH listening time for unauthorized transmission, and the like. Optionally, the information can be sent over a broadcast channel. Optionally, the information may be sent through a broadcast channel dedicated to the Inactive UE. Optionally, the information may also notify the UE by using dedicated RRC signaling before the UE enters the inactive state.

Step S302: The UE sends the uplink data by using the unlicensed resource according to the unlicensed transmission information.

Step S303: The base station determines, according to the uplink resource location of the received UE data, an RNTI value used when the public DCI information is subsequently sent, and sends a DCI message. Optionally, the downlink control information may further include information about a user status. Optionally, the downlink control information may include information about whether the user is in an inactive state. Optionally, the downlink control information may include information about whether the user is in a connected state. Optionally, the information about the specific RNTI may be specified by a protocol, or may be delivered to the UE in an SIB message. Optionally, the foregoing specific RNTI may be shared by multiple or all UEs in an inactive state. Optionally, the specific RNTI may be determined according to a time domain and/or a frequency domain location of a radio resource used by the UE uplink transmission. Optionally, the specific RNTI decision mode may be specified by a protocol or indicated in a system broadcast message. Optionally, the information about the specific RNTI may be the same as the original RA-RNTI information of the LTE system. At this time, the base station only needs to indicate in the broadcast information whether the information of the specific RNTI is the same as the RA-RNTI information.

Step S304, the user receives the ACK information and/or subsequent data of the base station according to the DCI information, and remains in the inactive state.

FIG. 4 is a flowchart of uplink data retransmission by an inactive state UE according to an embodiment of the present disclosure. As shown in Figure 4, the specific implementation process is as follows:

In step S401, the user entering the inactive state listens to the unlicensed sending information sent by the base station. The information may include one or more of the following: radio resource location information that is not authorized to be sent, adjustment code selection information that is not authorized to be sent, uplink power control information that is not authorized to be sent, and RNTI used for downlink response that is not authorized to be sent. Value information, retransmission waiting time for unauthorized transmission, subsequent PDCCH listening time for unauthorized transmission, and the like. Optionally, the information can be sent over a broadcast channel. Optionally, the information may be sent through a broadcast channel dedicated to the Inactive UE. Optionally, the information may also notify the UE by using dedicated RRC signaling before the UE enters the inactive state.

Step S402: The UE sends the uplink data by using the unlicensed resource according to the unlicensed transmission information.

Step S403: The UE does not receive the ACK and/or subsequent data of the base station within a certain time range, and the UE retransmits the uplink data by using the unlicensed resource according to the unlicensed transmission information. Optionally, the foregoing time range may be a retransmission waiting time for unauthorized transmission, or a subsequent PDCCH listening time for unauthorized transmission. Optionally, the UE starts a retransmission timer after sending the uplink data. If the ACK information and/or subsequent data of the base station are still not received after the timer expires, the UE retransmits the uplink data.

FIG. 5 is a schematic diagram of a downlink data format in which all inactive state UEs share a CRC check code in the same downlink data block according to an embodiment of the present disclosure. As shown in FIG. 5, the data packets of different target UEs include two parts: a UE ID part; an ACK and a subsequent data part. The data packets of different target UE A and UE B are combined and share the same CRC check code for CRC check.

FIG. 6 is a schematic diagram of a downlink data format in which different inactive state UEs use different CRC check codes in the same downlink data block according to an embodiment of the present disclosure. As shown in FIG. 6, the data packets of different target UEs include three parts: a UE ID part; an ACK and a subsequent data part, and a separate CRC check code. Packets of different target UE A and UE B are sent together, but different UEs use different CRC check codes for CRC check.

FIG. 7 is a schematic diagram of supporting downlink data formats of different lengths according to an embodiment of the present disclosure. As shown in FIG. 7, the data packets of different target UEs include three parts: a packet length indication; a UE ID part; an ACK and a subsequent data part, and a separate CRC check code. Packets of different target UE A and UE B are sent together, but different UEs use different CRC check codes for CRC check. Moreover, the packet lengths of different UEs may be different and indicated in the length indication area.

Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation. Based on such understanding, the technical solution of the present disclosure, which is essential or contributes to the related art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk, CD-ROM). The instructions include a number of instructions for causing a terminal device (which may be a cell phone, a computer, a server, or a network device, etc.) to perform the methods described in various embodiments of the present disclosure.

Example 2

In the embodiment, a data transmission device is also provided, which is used to implement the above-mentioned embodiments and preferred embodiments, and has not been described again. As used below, the term "module" may implement a combination of software and/or hardware of a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.

FIG. 8 is a structural block diagram of a data transmission apparatus according to an embodiment of the present disclosure. As shown in FIG. 8, the apparatus is applied to a user equipment, including:

1) The obtaining module 82 is configured to obtain the downlink control information DCI by using the specified radio network temporary identifier RNTI value;

2) The receiving module 84 is configured to perform an operation of receiving a data packet sent by the base station according to the DCI.

Optionally, the application scenario of the foregoing data transmission device includes, but is not limited to, a Long-Term Evolution (LTE) system, in which the user equipment UE in the inactive state uses the specified wireless network. Temporarily identifying the RNTI value to obtain the downlink control information DCI, and the UE performs the operation of receiving the data packet sent by the base station according to the DCI, and solves the problem that the downlink data transmission caused by the uplink data cannot be effectively performed in the inactive state in the related art, and the problem is achieved. The technical effect of efficient transmission of downlink data.

9 is a structural block diagram (1) of a data transmission apparatus according to an embodiment of the present disclosure. As shown in FIG. 9, the apparatus includes, in addition to the module shown in FIG.

1) a sending module 92, configured to retransmit the uplink data by using an unlicensed resource according to the unlicensed sending message, where the UE does not receive the data packet sent by the base station according to the DCI, where the unlicensed sending message includes the following at least One: unauthorised transmission of radio resource location information, unauthorised transmission of adjustment code selection information, unauthorised transmission of uplink power control information, RNTI value information used for unauthorized transmission of downlink responses, retransmission pending for unauthorized transmission Time, the PDCCH listening time of the physical downlink control channel that is not authorized to be sent.

It should be noted that each of the above modules may be implemented by software or hardware. For the latter, the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the above modules are in any combination. The forms are located in different processors.

Example 3

In the embodiment, a data transmission method is further provided. FIG. 10 is a flowchart of another data transmission method according to an embodiment of the present disclosure. As shown in FIG. 10, the process includes the following steps:

Step S1002: The base station sends downlink control information DCI to the user equipment UE, where the DCI is used by the UE to receive a data packet sent by the base station according to the DCI; wherein the DCI is obtained by using a specified radio network temporary identifier RNTI value.

Optionally, the reference scenario of the foregoing data transmission method includes, but is not limited to, a Long-Term Evolution (LTE) system, in which the base station sends downlink control information DCI to the user equipment UE, The UE is configured to receive, according to the DCI, a data packet sent by the base station, where the DCI is obtained by using a specified radio network temporary identifier RNTI value, which solves the problem that the downlink data transmission caused by the uplink data cannot be effectively performed in the inactive state in the related art. The problem has reached the technical effect of efficient transmission of downlink data.

Example 4

11 is a structural block diagram of another data transmission apparatus according to an embodiment of the present disclosure. As shown in FIG. 11, the apparatus is applied to a base station, including:

1) The sending module 1102 is configured to send downlink control information DCI to the user equipment UE, where the DCI is used by the UE to receive a data packet sent by the base station according to the DCI; wherein the DCI is obtained by using a specified radio network temporary identifier RNTI value.

Example 5

Embodiments of the present disclosure also provide a storage medium. Optionally, in the embodiment, the foregoing storage medium may be configured to store program code for performing the following steps:

S1, the user equipment UE in the inactive state acquires the downlink control information DCI by using the specified radio network temporary identifier RNTI value;

S2. The UE performs an operation of receiving a data packet sent by the base station according to the DCI.

Optionally, the storage medium is further arranged to store program code for performing the following steps:

S3. The base station sends downlink control information DCI to the user equipment UE, where the DCI is used by the UE to receive the data packet sent by the base station according to the DCI; wherein the DCI is obtained by using a specified radio network temporary identifier RNTI value.

Optionally, in this embodiment, the foregoing storage medium may include, but not limited to, a USB flash drive, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, and a magnetic memory. A variety of media that can store program code, such as a disc or a disc.

Optionally, in this embodiment, the processor performs the above steps S1, S2 according to the stored program code in the storage medium.

Optionally, in this embodiment, the processor performs the above step S3 according to the stored program code in the storage medium.

For example, the specific examples in this embodiment may refer to the examples described in the foregoing embodiments and the optional embodiments, and details are not described herein again.

It will be apparent to those skilled in the art that the various modules or steps of the present disclosure described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module. As such, the disclosure is not limited to any specific combination of hardware and software.

The above description is only a preferred embodiment of the present disclosure, and is not intended to limit the disclosure, and various changes and modifications may be made to the present disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and scope of the present disclosure are intended to be included within the scope of the present disclosure.

Industrial applicability

The present disclosure is applicable to the field of communications, and solves the problem that the downlink data transmission caused by the uplink data cannot be effectively performed in an inactive state in the related art, and achieves the technical effect of efficient transmission of downlink data.

Claims

A data transmission method includes:

The user equipment UE in the inactive state acquires the downlink control information DCI using the specified radio network temporary identifier RNTI value;

The UE performs an operation of receiving a data packet sent by the base station according to the DCI.
The method according to claim 1, wherein the specified RNTI value is determined by at least one of the following radio resources used by the UE uplink transmission: a time domain location, a frequency domain location.
The method of claim 1 wherein the DCI comprises at least one of:

Whether the UE is in an inactive state information or whether the UE is in a connected state.
The method according to claim 1, wherein, in the case that the UE does not receive the data packet sent by the base station according to the DCI, the method further includes:

The UE retransmits the uplink data by using an unauthorized resource according to the unauthorised sending message.

The unlicensed sending message includes at least one of the following: radio resource location information that is not authorized to be sent, adjustment code selection information that is not authorized to be sent, uplink power control information that is not authorized to be sent, and downlink response that is not authorized to be sent. RNTI value information, retransmission waiting time for unauthorized transmission, and physical downlink control channel PDCCH listening time for unauthorized transmission.
The method of claim 4, wherein the unauthorized transmission of the message is determined by at least one of:

Broadcast channel, broadcast channel dedicated to inactive UE, dedicated radio resource control RRC signaling.
The method of claim 1 wherein said data packet is comprised of at least one of:

Length indication, UE ID, ACK information, data information, cyclic redundancy check CRC information.
The method of claim 6, wherein the cyclic redundancy check CRC information comprises at least one of the following:

A check code for performing CRC check on the entire downlink data block containing different UE data; and separately providing a check code of the CRC check for the data portion of different UEs.
A data transmission method includes:

The base station sends downlink control information DCI to the user equipment UE, where the DCI is used by the UE to receive a data packet sent by the base station according to the DCI;

The DCI is obtained by temporarily identifying the RNTI value by using a specified wireless network.
The method according to claim 8, wherein the specified RNTI value is determined by at least one of the following radio resources used by the UE uplink transmission: a time domain location, a frequency domain location.
A data transmission device is applied to user equipment, including:

Obtaining a module, configured to obtain downlink control information DCI by using a specified radio network temporary identifier RNTI value;

The receiving module is configured to perform an operation of receiving a data packet sent by the base station according to the DCI.
The apparatus according to claim 10, wherein the specified RNTI value is determined by at least one of the following radio resources used by the UE uplink transmission: a time domain location, a frequency domain location.
The device of claim 10, wherein the device further comprises:

a sending module, configured to: when the UE does not receive the data packet sent by the base station according to the DCI, retransmit the uplink data according to the unauthorised sending message by using an unlicensed resource,

The unlicensed sending message includes at least one of the following: radio resource location information that is not authorized to be sent, adjustment code selection information that is not authorized to be sent, uplink power control information that is not authorized to be sent, and downlink response that is not authorized to be sent. RNTI value information, retransmission waiting time for unauthorized transmission, and physical downlink control channel PDCCH listening time for unauthorized transmission.
A data transmission device is applied to a base station, including:

a sending module, configured to send downlink control information DCI to the user equipment UE, where the DCI is used by the UE to receive a data packet sent by the base station according to the DCI;

The DCI is obtained by temporarily identifying the RNTI value by using a specified wireless network.
The apparatus according to claim 13, wherein the specified RNTI value is determined by at least one of the following radio resources used by the UE uplink transmission: a time domain location, a frequency domain location.