CN115038190A

CN115038190A - Data transmission method and device

Info

Publication number: CN115038190A
Application number: CN202110239191.7A
Authority: CN
Inventors: 雷珍珠
Original assignee: Spreadtrum Semiconductor Nanjing Co Ltd
Current assignee: Spreadtrum Semiconductor Nanjing Co Ltd
Priority date: 2021-03-03
Filing date: 2021-03-03
Publication date: 2022-09-09

Abstract

The application discloses a data transmission method and a data transmission device, which are applied to terminal equipment, wherein the method comprises the following steps: responding to the terminal equipment in an Idle state or an Inactive state, and sending a transmission block set to the access network equipment through a pre-configured resource PUR, wherein the transmission block set comprises at least one transmission block, and the PUR is configured by the access network equipment; if receiving downlink control information DCI which is sent by access network equipment and comprises indication information of a transmission block to be retransmitted, determining the transmission block to be retransmitted in a transmission block set according to the DCI which comprises the indication information of the transmission block to be retransmitted; and transmitting the transport block to be retransmitted to the access network equipment. By the method, retransmission at the transmission block level can be realized, and the reliability of PUR data transmission is ensured.

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

In a New wireless (New Radio, NR) system of 5G, in an idle state/an inactive state, if a terminal device needs to send a plurality of uplink transport blocks (i.e., more uplink data), a random access process needs to be initiated, and the terminal device is switched from the idle/inactive state to a connected state, where the terminal device can send the plurality of uplink transport blocks. The uplink data transmission mechanism may cause Radio Resource Control (RRC) signaling overhead and terminal device energy consumption, and may also cause unnecessary uplink data transmission delay due to the random access procedure. In an idle state/inactive state, the terminal transmits a plurality of uplink transport blocks by using the PUR, which requires consideration of reliability of transmission and reduction of reception complexity and energy consumption of network equipment.

Disclosure of Invention

The application discloses a data transmission method and a data transmission device, which can indicate terminal equipment to transmit a plurality of transmission blocks at one time in a non-connection state.

In a first aspect, an embodiment of the present application provides a data transmission method and apparatus, which are applied to a terminal device, and the method includes:

responding to the terminal equipment in an Idle state or an Inactive state, and sending a transmission block set to the access network equipment through a pre-configured resource PUR, wherein the transmission block set comprises at least one transmission block, and the PUR is configured by the access network equipment;

if receiving downlink control information DCI which is sent by access network equipment and comprises indication information of a transmission block to be retransmitted, determining the transmission block to be retransmitted in a transmission block set according to the DCI which comprises the indication information of the transmission block to be retransmitted;

and sending the transport block to be retransmitted to the access network equipment.

In an embodiment, the DCI including the transport block indication information to be retransmitted includes: a retransmission scheduling DCI, wherein a first preset bit field included in the retransmission scheduling DCI is used for carrying transmission block indication information to be retransmitted, and the first preset bit field includes: a hybrid automatic repeat request Process Number HARQ Process Number bit field and/or a newly added bit; the method further comprises the following steps: and transmitting the transmission block to be retransmitted to the access network equipment through the uplink resource indicated by the retransmission scheduling DCI.

In an embodiment, a first bit in the first predetermined bit field is used to indicate a transport block to which the first bit corresponds, and the first bit is any bit in the first predetermined bit field.

In an embodiment, the DCI including the transport block indication information to be retransmitted includes: confirming downlink control information ACK DCI, wherein a second preset bit field included in the ACK DCI is used for bearing transmission block indication information to be retransmitted; the method further comprises the following steps: and transmitting the transport block to be retransmitted to the access network equipment through the PUR.

In an embodiment, a second bit in the second predetermined bit field is used to indicate a transport block corresponding to the second bit, and the second bit is any bit in the second predetermined bit field.

In an embodiment, the DCI including the transport block indication information to be retransmitted includes: backing down downlink control information (Fallback DCI), wherein a third preset bit field included in the Fallback DCI is used for bearing transmission block indication information to be retransmitted; the method further comprises the following steps: switching from an Idle state or an Inactive state to a connected state through a random access process; and transmitting the transmission block to be retransmitted to the access network equipment in the connected state.

In an embodiment, before sending the transport block set to the access network device through the first pre-configured resource PUR, an indication signal is sent to the access network device, where the indication signal is used for indicating the transport block number of at least one transport block.

In one embodiment, the resource location for transmitting the indication signal is located before the PUR, the time interval Offset from the starting position of the PUR is a first Offset, the resource location for transmitting the indication signal and the first Offset are determined according to configuration information, and the configuration information is configured through radio resource control RRC dedicated signaling transmitted by the access network device.

In one embodiment, a first transport block in a transport block set corresponds to a plurality of candidate PUR units, and each of the plurality of candidate PUR units corresponds to a different number of transport blocks; the number of the candidate PUR units corresponding to the first transmission block is determined according to configuration information sent by access network equipment, and the number of the different transmission blocks corresponding to each candidate PUR unit in the candidate PUR units is determined through the configuration information; the method further comprises the following steps: determining the number of transport blocks in a transport block set; if the number is N, determining target candidate PUR units corresponding to N, wherein N is an integer greater than or equal to 1; and sending the first transmission block to the access network equipment through the first PUR candidate unit.

In a second aspect, an embodiment of the present application provides a data transmission method, which is applied to an access network device, and the method includes:

receiving a transmission block set sent by a terminal device on a pre-configured resource PUR, wherein the transmission block set comprises at least one transmission block, and the PUR is configured by an access network device;

determining a transmission block to be retransmitted in a transmission block set;

and sending downlink control information DCI including the indication information of the transmission block to be retransmitted to the terminal equipment.

In an embodiment, the DCI including the transport block indication information to be retransmitted includes: a retransmission scheduling DCI, wherein a first preset bit field included in the retransmission scheduling DCI is used for carrying transmission block indication information to be retransmitted, and the first preset bit field includes: a hybrid automatic repeat request Process Number HARQ Process Number bit field and/or a newly added bit; the retransmission scheduling DCI is also used to instruct the terminal device to transmit the uplink resource through which the transport block to be retransmitted passes.

In an embodiment, the DCI including the transport block indication information to be retransmitted includes: confirming downlink control information ACK DCI, wherein a second preset bit field included in the ACK DCI is used for bearing transmission block indication information to be retransmitted; the ACK DCI is also used for instructing the terminal equipment to send a transmission block to be retransmitted to the access network equipment through the PUR.

In an embodiment, the DCI including the transport block indication information to be retransmitted includes: backing back Downlink Control Information (DCI), wherein a third preset bit field included in the DCI is used for bearing indication information of a transmission block to be retransmitted; the Fallback DCI is further configured to instruct the terminal device to switch to a connected state, and send a transmission block to be retransmitted in the connected state.

In an embodiment, before receiving a transport block set sent by a terminal device on a pre-configured resource PUR, an indication signal sent by the terminal device is received, where the indication signal is used to indicate a transport block number of at least one transport block.

In one embodiment, a first transport block in a transport block set corresponds to a plurality of candidate PUR units, and each of the plurality of candidate PUR units corresponds to a different number of transport blocks; the first transmission block corresponds to a plurality of candidate PUR units and is configured by the access network equipment, and the number of different transmission blocks corresponding to each candidate PUR unit in the candidate PUR units is configured by the access network equipment; the method further comprises the following steps: and if the first transmission block is received in the target candidate PUR unit, determining the number of the transmission blocks in the transmission block set to be N, wherein N is an integer greater than or equal to 1.

In a third aspect, an embodiment of the present application provides a data transmission apparatus, which is applied to a terminal device, and the apparatus includes:

a receiving and sending unit, configured to send a transport block set to an access network device through a pre-configured resource PUR in response to a terminal device being in an Idle state or an Inactive state, where the transport block set includes at least one transport block, and the PUR is configured by the access network device;

a processing unit, configured to determine, if receiving DCI of downlink control information including transport block indication information to be retransmitted sent by an access network device, a transport block to be retransmitted in a transport block set according to the DCI including the transport block indication information to be retransmitted;

the transceiver unit is further configured to send the transport block to be retransmitted to the access network device.

In a fourth aspect, an embodiment of the present application provides a data transmission apparatus, which is applied to an access network device, and the apparatus includes:

a receiving and sending unit, configured to receive a transport block set sent by a terminal device on a pre-configured resource PUR, where the transport block set includes at least one transport block, and the PUR is configured by an access network device;

a processing unit, configured to determine a transport block to be retransmitted in a transport block set;

the transceiver unit is further configured to send downlink control information DCI including transport block indication information to be retransmitted to the terminal device.

In a fifth aspect, an embodiment of the present application provides a data transmission apparatus, including a processor, a memory, and a user interface, where the processor, the memory, and the user interface are connected to each other, where the memory is used to store a computer program, the computer program includes program instructions, and the processor is configured to call the program instructions, perform the data transmission method described in the first aspect, or perform the data transmission method described in the second aspect.

In a sixth aspect, the present application provides a computer-readable storage medium, where the computer-readable storage medium stores one or more instructions, and the one or more instructions are adapted to be loaded by a processor and execute the data transmission method described in the first aspect, or execute the data transmission method described in the second aspect.

In a seventh aspect, an embodiment of the present application provides a chip, where the chip includes a processor and a data interface, and the processor reads instructions stored on a memory through the data interface to execute the data transmission method described in the first aspect, or execute the data transmission method described in the second aspect.

In an eighth aspect, an embodiment of the present application provides a chip module, where the chip module includes a chip and a transceiver for sending a transport block set, and the chip module is used in a terminal device, where:

the chip is used for responding to the condition that the terminal equipment is in an Idle state or an Inactive state, and sending a transmission block set to the access network equipment through a pre-configured resource PUR, wherein the transmission block set comprises at least one transmission block, and the PUR is configured by the access network equipment;

the chip is also used for determining a transmission block to be retransmitted in the transmission block set according to the DCI including the transmission block indication information to be retransmitted if the DCI including the transmission block indication information to be retransmitted, which is sent by the access network equipment, is received through the transceiver;

the chip is also used for triggering the transceiver to send the transport block to be retransmitted to the access network equipment.

In a ninth aspect, an embodiment of the present application provides a chip module, where the chip module includes a chip and a transceiver for sending a transport block set, and the chip module is used for accessing a network device, where:

the chip is used for receiving a transmission block set sent by a terminal device through a transceiver on a pre-configured resource PUR, wherein the transmission block set comprises at least one transmission block, and the PUR is configured by an access network device;

the chip is also used for determining a transmission block to be retransmitted in the transmission block set;

the chip is also used for triggering the transceiver to send downlink control information DCI including the indication information of the transmission block to be retransmitted to the terminal equipment.

In the embodiment of the application, the terminal device responds to the terminal device being in an Idle state or an Inactive state, and sends a transport block set to the access network device through a pre-configured resource PUR, wherein the transport block set comprises at least one transport block, and the PUR is configured by the access network device; if receiving downlink control information DCI which is sent by access network equipment and comprises indication information of a transmission block to be retransmitted, determining the transmission block to be retransmitted in a transmission block set according to the DCI which comprises the indication information of the transmission block to be retransmitted; and transmitting the transport block to be retransmitted to the access network equipment. By the method, retransmission at the transmission block level can be realized, and the reliability of PUR data transmission is ensured.

Drawings

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

Fig. 1 is a schematic diagram of data transmission through a PUR according to an embodiment of the present application;

fig. 2 is a flowchart illustrating a random access procedure according to an embodiment of the present application;

fig. 3 is a schematic diagram of a network architecture for data transmission according to an embodiment of the present application;

fig. 4 is a schematic flowchart of a data transmission method according to an embodiment of the present application;

fig. 5 is a schematic diagram illustrating a number of transport blocks transmitted in one cycle of a PUR according to an embodiment of the present application;

fig. 6 is a schematic diagram of a method for determining the number of transport blocks by sending a first transport block through different PUR units according to an embodiment of the present application;

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

fig. 8 is a schematic diagram of a unit of a data transmission device according to an embodiment of the present application;

fig. 9 is a simplified schematic physical structure diagram of a data transmission device according to an embodiment of the present application;

fig. 10 is a simplified chip diagram of a data transmission device according to an embodiment of the present application;

fig. 11 is a simplified schematic diagram of a chip module according to an embodiment of the present disclosure.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the application, as detailed in the appended claims.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the recitation of an element by the phrase "comprising an … …" does not exclude the presence of additional like elements in the process, method, article, or apparatus that comprises the element, and further, where similarly-named elements, features, or elements in different embodiments of the disclosure may have the same meaning, or may have different meanings, that particular meaning should be determined by their interpretation in the embodiment or further by context with the embodiment.

It should be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope herein. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context. Also, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context indicates otherwise. It will be further understood that the terms "comprises," "comprising," "includes" and/or "including," when used in this specification, specify the presence of stated features, steps, operations, elements, components, items, species, and/or groups, but do not preclude the presence, or addition of one or more other features, steps, operations, elements, components, species, and/or groups thereof. The terms "or" and/or "as used herein are to be construed as inclusive or meaning any one or any combination. Thus, "A, B or C" or "A, B and/or C" means "any of the following: a; b; c; a and B; a and C; b and C; A. b and C ". An exception to this definition will occur only when a combination of elements, functions, steps or operations are inherently mutually exclusive in some way.

It should be understood that, although the steps in the flowcharts in the embodiments of the present application are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and may be performed in other orders unless explicitly stated herein. Moreover, at least some of the steps in the figures may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, in different orders, and may be performed alternately or partially with other steps or at least some of the sub-steps or stages of other steps.

It should be noted that, step numbers such as 110, 120, etc. are used herein for the purpose of more clearly and briefly describing the corresponding content, and no substantial limitation on the sequence is made, and a person skilled in the art may perform 120 first and then perform 110, etc. in the specific implementation, but these should be within the protection scope of the present application.

In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for the convenience of description of the present application, and have no specific meaning by themselves. Thus, "module", "component" or "unit" may be used mixedly.

In order to better understand the embodiments of the present application, the following terms refer to the embodiments of the present application:

IDLE (RRC _ IDLE) state: after a certain cell finishes camping, the terminal device may be said to enter an idle state. The access network device may provide the following services to the terminal device in the RRC _ IDLE state: limited services (including emergency telephony, ETWS on acceptable cells, CMAS), normal services (public use on suitable cells), operator services (operators applicable only to reserved cells).

INACTIVE (RRC _ INACTIVE) state: the access network device may provide the following services to the terminal device in the RRC _ INACTIVE state: normal service (public use on the right cell), operator service (operator only for reserved cells).

CONNECTED state (RRC _ CONNECTED state): if the terminal device completes the random access procedure, the terminal device may be said to enter the connected state.

Early Data Transmission (EDT): in the current NR system, a terminal device in an Idle (Idle)/Inactive (Inactive) state wants to send uplink/downlink data, and needs to enter a connected state through a random access process to send the uplink/downlink data. The data transmission mechanism under idle/inactive causes Radio Resource Control (RRC) signaling overhead and energy consumption of the terminal device, and also causes data transmission delay. In order to reduce RRC signaling overhead and energy consumption of terminal equipment caused by sending uplink data by the terminal equipment under idle, an advanced data transmission mechanism is introduced in a narrow-band Internet of things system (NB-IOT). The essence of this transmission mechanism is that during the process of initiating random access, the terminal device uses the third message (Msg3) to carry uplink data to achieve the purpose of uplink data transmission, thereby avoiding the terminal device entering a connected state. Aiming at uplink data transmission in an idle state, the method effectively reduces the overhead of RRC signaling and the energy consumption of the terminal equipment, and simultaneously reduces the energy consumption of the terminal equipment. However, due to the limited number of bits Msg3 can carry, this approach can only upload a few small upstream packets.

Uplink pre-configured Resource (PUR): fig. 1 is a schematic diagram of data transmission via a PUR. In order to enable the terminal device to transmit a larger data packet in the Idle state, the existing NB-IOT mechanism is that the network configures dedicated periodic uplink preconfigured resources and corresponding downlink Search Space windows to the terminal device, and the terminal device may send uplink data through the uplink preconfigured resources and then receive Acknowledgement (ACK)/fallback (fallback) DCI or retransmit scheduling information through the corresponding downlink Search Space Window (SS Window). In addition, after the terminal device sends the uplink data by using the PUR, the access network device may send an RRC response message through a downlink search window corresponding to the PUR, where the RRC response message may be used to update the PUR configuration or carry a paging message. The terminal equipment can directly send uplink data on the preconfigured uplink resource, so that the terminal equipment is prevented from initiating a random access connection state entering process. Only when the Timing Advance (TA) is valid (i.e., the uplink synchronization is valid), the terminal device can transmit data by using the PUR (if configured).

And (3) random access process: as shown in fig. 2, the terminal device first reads a Master Information Block (MIB) and a System Information Block (SIB) 1 to complete downlink synchronization. By reading the SIB1, the terminal device determines the resources for sending a preamble (i.e., Msg1) to the access network device to indicate its intention to access the access network device. If the access network device correctly receives Msg1, it will send a random access response message scrambled with the RA-RNTI to the terminal device (Msg 2). After sending Msg1, the terminal device can use the RA-RNTI to monitor Msg2 from the access network device to descramble the message. The RA-RNTI is calculated from time and frequency resources of the RO. The Msg2 may contain TA, TC-RNTI, power adjustments and resource indications for terminal device transmission Mgs 3. The terminal device then sends its identity and initial access setup (Msg3) to the access network device via an uplink scheduling indication in Msg 2. Finally, the access network device may notify the terminal device of completion of the initial access procedure through Msg4, otherwise, the terminal device may determine that the initial access procedure failed.

The terminal device may obtain, through an SIB (system message block) message, a relevant configuration of a physical random access channel (PRACH transmission opportunity, RO), where the relevant configuration includes a cycle size of the RO, a number of ROs in a time domain within one PRACH period, a number of ROs multiplexed in a frequency (msg1-FDM), a number of SSBs (SSB-perRACH-occupancy) of each RO related quantity, and the like.

Multiple Transport Block (TB) scheduling: in order to improve the data transmission rate and reduce the control signaling overhead, NB-IOT/enhanced machine type communication (eMTC) introduces Multi-transport block (Multi-Tb) scheduling in a connected state, i.e. one DCI (downlink control information) can schedule a plurality of TBs. Connected state in order to implement retransmission of multi-TB scheduling and HARQ-ACK, the number of bits is additionally increased in DCI (the eMTC is increased by 4/5 bits, and the NB-IOT is increased by 1 bit) for implementing retransmission of multi-TB scheduling and HARQ-ACK. In the current connection state, one TB corresponds to one HARQ Process ID, and HARQ-ACK of multi-TB transmission is realized in a mode of joint coding of other bit fields.

In order to better understand the embodiments of the present application, a network architecture to which the embodiments of the present application are applicable is described below.

Referring to fig. 3, fig. 3 is a schematic diagram of a network architecture for data transmission according to an embodiment of the present disclosure. As shown in fig. 3, the network architecture for data transmission includes an access network device and a terminal device, where the terminal device establishes a connection with the access network device through a serving cell. Wherein, two transmission resources, namely, a PUR and a PDCCH, are configured in the serving cell. In practical applications, one serving cell may include more than two transmission resources, and in the embodiment of the present application, the serving cell includes two transmission resources as an example, which is not limited. The terminal device may periodically send uplink data on the PUR, and the access network device may send DCI to the terminal device through the PDCCH.

It should be noted that the technical solution of the present invention is applicable to 5th Generation (5G) communication systems, 4G and 3G communication systems, and various future communication systems, such as 6G, 7G, and in-vehicle short-distance communication systems. The technical solution of the present invention is also applicable to different network architectures, including but not limited to a relay network architecture, a dual link architecture, a Vehicle-to-any-object communication (Vehicle-to-event) architecture, an in-Vehicle short-distance communication architecture, and the like.

In this embodiment of the present application, the Core Network may be an evolved packet Core (EPC for short), a 5G Core Network (5G Core Network), or may be a novel Core Network in a future communication system. The 5G Core Network is composed of a set of devices, and implements Access and Mobility Management functions (AMF) of functions such as Mobility Management, User Plane Functions (UPF) providing functions such as packet routing and forwarding and qos (quality of service) Management, Session Management Functions (SMF) providing functions such as Session Management, IP address allocation and Management, and the like. The EPC may be composed of an MME providing functions such as mobility management, Gateway selection, etc., a Serving Gateway (S-GW) providing functions such as packet forwarding, etc., and a PDN Gateway (P-GW) providing functions such as terminal address allocation, rate control, etc.

The access network device related in the embodiment of the present application is an entity for transmitting or receiving a signal on a network side, and may be configured to perform inter-conversion between a received air frame and a network Protocol (IP) packet, and serve as a router between a terminal device and the rest of the access network, where the rest of the access network may include an IP network and the like. The access network device may also coordinate management of attributes for the air interface. For example, the access network device may be an eNB in LTE, may also be a New Radio Controller (NR Controller), may be a gNB in a 5G system, may be a Centralized network element (Centralized Unit), may be a New Radio base station, may be a Radio remote module, may be a micro base station, may be a Relay (Relay), may be a Distributed network element (Distributed Unit), may be a Reception Point (TRP) or a Transmission Point (TP), and may be a G node in an in-vehicle short-distance communication system or any other wireless access device, but the embodiment of the present invention is not limited thereto.

The access network device in the embodiment of the present application may include a Base Station (BS), which may also be referred to as a base station device, and is a device deployed in a Radio Access Network (RAN) to provide a wireless communication function. For example, a device providing a Base Station function in a 2G network includes a Base Transceiver Station (BTS), a device providing a Base Station function in a 3G network includes a node B (NodeB), a device providing a Base Station function in a 4G network includes an evolved node B (evolved NodeB, eNB), and a device providing a Base Station function in a Wireless Local Area Network (WLAN) is an Access Point (AP), a device providing a Base Station function in a 5G New Radio (NR) is a gbb (ng-eNB) providing a Base Station function, where the gbb and the terminal communicate with each other by using an NR technique, the ng-eNB and the terminal communicate with each other by using an E-a (evolved Terrestrial television Universal Radio Access) technique, and both the gbb and the ng-eNB may be connected to the 5G core network. The base station in the embodiment of the present application also includes a device and the like that provide a function of the base station in a future new communication system.

The Base Station Controller in the embodiment of the present application is an apparatus for managing a Base Station, for example, a Base Station Controller (BSC) in a 2G Network, a Radio Network Controller (RNC) in a 3G Network, and may also be referred to as an apparatus for controlling and managing a Base Station in a future new communication system.

In the embodiment of the application, a unidirectional communication link from an access network to a terminal is defined as a downlink, data transmitted on the downlink is downlink data, and the transmission direction of the downlink data is called as a downlink direction; the unidirectional communication link from the terminal to the access network is an uplink, the data transmitted on the uplink is uplink data, and the transmission direction of the uplink data is referred to as an uplink direction.

The terminal device referred to in the embodiments of the present application is an entity for receiving or transmitting signals at a user side. The terminal device may be a device providing voice and/or data connectivity to a user, e.g. a handheld device, a vehicle mounted device, etc. with wireless connection capability. The terminal device may also be other processing devices connected to the wireless modem. The terminal device may communicate with a Radio Access Network (RAN). The Terminal Device may also be referred to as a wireless Terminal, a Subscriber Unit (Subscriber Unit), a Subscriber Station (Subscriber Station), a Mobile Station (Mobile), a Remote Station (Remote Station), an Access Point (Access Point), a Remote Terminal (Remote Terminal), an Access Terminal (Access Terminal), a User Terminal (User Terminal), a User Agent (User Agent), a User Device (User Device), a User Equipment (User Equipment, UE), or the like. The terminal equipment may be mobile terminals such as mobile telephones (or so-called "cellular" telephones) and computers with mobile terminals, e.g. portable, pocket, hand-held, computer-included or car-mounted mobile devices, which exchange language and/or data with a radio access network. For example, the terminal device may be a Personal Communication Service (PCS) phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), or the like. Common terminal devices include, for example: the Mobile terminal may be a Mobile phone, a tablet computer, a laptop computer, a palmtop computer, a Mobile Internet Device (MID), a vehicle, a roadside Device, an aircraft, a T node, a wearable Device, such as a smart watch, a smart bracelet, a pedometer, or the like, but the embodiment of the present application is not limited thereto. The communication method and the related device provided by the present application are described in detail below.

In order to enable the terminal device to transmit a plurality of transmission blocks at a time in a non-connected state, embodiments of the present application provide a data transmission method and apparatus, and details of the data transmission method and apparatus provided by the embodiments of the present application are further described below.

Referring to fig. 4, fig. 4 is a schematic flowchart of a data transmission method according to an embodiment of the present application. The data transmission method includes operations 410 to 430 as follows. The main body for executing the method shown in fig. 4 may be a terminal device, or the main body may be a chip in the terminal device. When the terminal device executes the flow shown in fig. 4, the following steps may be included:

410. and responding to the terminal equipment in an Idle state or an Inactive state, and sending a transport block set to the access network equipment through a pre-configured resource PUR, wherein the transport block set comprises at least one transport block, and the PUR is configured by the access network equipment.

In a possible implementation manner, before the terminal device sends the transport block set to the access network device through the pre-configured resource PUR, the access network device may configure a periodic PUR for the terminal device, where each PUR includes a plurality of PUR units, and each transport block corresponds to at least one PUR unit. The access network device may configure the PUR by sending an RRC signaling to the terminal device, or may configure the PUR by other manners, which is not limited in this embodiment of the present application. In addition, the access network device may also configure the maximum number of transport blocks that can be transmitted by the terminal device in each PUR period and at least one PUR unit corresponding to each transport block. The at least one PUR unit corresponding to each transport block refers to that the terminal device uses one of the at least one PUR unit to send each transport block.

The terminal device may send the transport block set to the access network device through the PUR, where sending the transport block set by the terminal device may be autonomous, that is, does not need to be scheduled by the access network device, and this process may be referred to as initial transmission. The number of transport blocks of at least one transport block included in the transport block set may be less than or equal to the maximum number of transport blocks that can be transmitted by a terminal device configured by the access network device in each PUR period of the PUR. For example, if the maximum number of transmittable transport blocks configured by the access network device is 4, the terminal device may send 1, 2, 3, or 4 transport blocks in one period of the PUR. The number of transport blocks specifically sent by the terminal device may be determined according to the size of the data amount required to be sent.

In a possible implementation manner, before sending the transport block set to the access network device through the PUR, the terminal device may send an indication signal to the access network device, where the indication signal is used to indicate a transport block number of at least one transport block in the transport block set. Because the access network device configures the maximum number of the transmittable transmission blocks and the PUR unit corresponding to each transmission block for the terminal device in one PUR period, the access network device is likely to perform blind detection on the PUR unit corresponding to each transmission block, and if the number of the transmission blocks sent by the terminal device is less than the configured number, the access network device may perform an invalid blind detection operation on the transmission blocks, which causes waste of resources and increases energy consumption of the access network device. For example, the number of transmission blocks that can be transmitted in one period of the PUR is 4, while an actual terminal device only transmits 1 transmission block, and if there is no indication, the access network device may blindly detect the PUR units corresponding to the 4 transmission blocks, so that the access network device performs an invalid blind detection operation, and the energy consumption of the access network device is further caused. Therefore, the indication signal can avoid the access network equipment from performing invalid blind detection operation.

Fig. 5 is a diagram illustrating the number of transport blocks transmitted in one cycle of the PUR indicated by the indication signal. The indication signal indicates that the number of the transport blocks sent by the terminal device in the period of the PUR is 2, and the access network device only needs to receive 2 transport blocks on the PUR after receiving the indication signal.

Alternatively, the resource location for sending the indication signal may be located before the period of the PUR, and a time interval (Offset) between the resource location and the start position of the period of the PUR is a first Offset. And the resource location for transmitting the indication signal and the first Offset may be determined according to configuration information, which may be configured by RRC dedicated signaling sent by the access network device.

Optionally, if there is only one transport block in the transport block set sent by the terminal device, the terminal device may not send the indication signal. If the access network device does not receive the indication signal before receiving the transmission blocks on the PUR, it may be determined that the number of the transmission blocks sent by the terminal device is 1, and then the network device stops receiving the transmission blocks in the current PUR period only by receiving 1 transmission block.

In a possible implementation manner, a first transport block in the transport block set corresponds to multiple candidate PUR units, and different candidate PUR units in the multiple candidate PUR units correspond to different numbers of transport blocks, where the multiple candidate PUR units corresponding to the first transport block and the number of transport blocks corresponding to each candidate PUR unit are configured to the terminal device by the network through RRC dedicated signaling. The terminal device may select a corresponding target candidate PUR unit from the multiple candidate PUR units to send a first transport block in the transport block set according to the number of transport blocks in the transport block set, and the access network device determines transport block data transmitted by the terminal device in the current PUR period, that is, the number of transport blocks in the transport block set, according to the target candidate PUR unit transmitted by the first transport block.

Specifically, the terminal device may first determine the number of transmission blocks in the transmission block set to be transmitted, and if it is determined that the number is N, further determine a target candidate PUR unit corresponding to the N. The number of different transmission blocks (i.e., N is a different value) corresponds to different candidate PUR units, and N is an integer greater than or equal to 1. The terminal device may send a first transport block in the transport block set to be transmitted to the access network device through the target candidate PUR unit, and send the first transport block to the access network device through the target candidate PUR unit to indicate that the number of transport blocks in the transport block set to be transmitted is N. That is, the terminal device may determine, according to the size of N, the candidate PUR unit that transmits the first transport block, and if the terminal device receives, at the target candidate PUR unit, the transport block transmitted by the terminal device, the number of transport blocks transmitted by the terminal device may be determined to be N.

It should be noted that different PUR units may be distinguished by a frequency division manner or may also be distinguished by a code division manner, that is, different PUR units correspond to different Demodulation Reference Signal (DMRS) sequences or DMRS ports.

For example, fig. 6 is a schematic diagram illustrating a method for determining the number of transport blocks by sending a first transport block through different PUR units. In the figure, the PUR units 1, 2, and 3 are three different candidate PUR units corresponding to a first transport block in one PUR cycle, and the PUR units 4, 5, and 6 are PUR units corresponding to transport blocks excluding the first transport block. The PUR unit 1 corresponds to 1 transmission block, the PUR unit 2 corresponds to 2 transmission blocks, and the PUR unit 3 corresponds to 3 transmission blocks. The blocks filled with the slashes indicate the PUR units used by the terminal device to send the transport blocks, where the target candidate PUR unit used for the first transport block transmission is the candidate PUR unit corresponding to N being 2. After the terminal device determines that the number N of the transport blocks in the transport block set to be transmitted is 2, it may be determined that the first transport block in the transport block set to be transmitted is sent through the PUR unit 2, and is not sent through the PUR unit 1 or the PUR unit 3. And the remaining transport block, i.e. the second transport block, may be sent by the terminal device through its corresponding PUR unit, i.e. using PUR unit 4 to send the second transport block. In this way, if the access network device receives the first transport block on the PUR unit 2, it may determine that the number of transport blocks sent by the terminal device is 2, and then the access network device only needs to perform blind detection and receive two transport blocks.

420. If receiving downlink control information DCI which is sent by the access network equipment and comprises the indication information of the transmission block to be retransmitted, determining the transmission block to be retransmitted in the transmission block set according to the DCI which comprises the indication information of the transmission block to be retransmitted.

Wherein, the information of the transport blocks to be retransmitted can be used to indicate the transport blocks to be retransmitted in the transport block set.

In one possible implementation, the DCI including the transport block indication information to be retransmitted may include: and retransmitting and scheduling the DCI. The retransmission scheduling DCI is used to schedule the terminal device to retransmit the transport block to be retransmitted indicated by the retransmission scheduling DCI. The first predetermined bit field is used for carrying a transmission block indication signal to be retransmitted. The first predetermined bit field includes a hybrid automatic repeat request Process Number (HARQ Process Number) bit field and/or a newly added bit. The newly added bit refers to one or more bits added on the basis of the existing bit. The format of the retransmission scheduling DCI corresponding to the PUR retransmission is consistent with the format of the DCI used by the terminal device in the connected state, but since the PUR transmission is implemented by a single HARQ, that is, a plurality of transport blocks share one HARQ Process, the HARQ Process Number bit field in the retransmission scheduling DCI transmitted by the PUR is invalid. The HARQ Process Number bit field may be used to indicate a retransmission scheduled transport block. If it is sufficient to indicate the transport block to be retransmitted only by the HARQ Process Number, the bit may not be newly added; if the bit is not enough, the HARQ Process Number bit field and the newly added bit can be considered to jointly indicate the transport block to be retransmitted. The number of bits in the first preset bit field is the same as the maximum number of transport blocks that can be transmitted in a PUR period configured by the access network device to the terminal device.

Optionally, a first bit of the first preset bits is used to indicate a transport block corresponding to the first bit. Wherein the first bit is any bit in a first predetermined bit field. The first bit having a different value may indicate whether the transport block indicated by the first bit is to be retransmitted or not, i.e., whether the transport block is to be transmitted or not. For example, if the first bit is 1, it represents that the corresponding transport block needs to be retransmitted, and if 0, it represents that the corresponding transport block does not need to be retransmitted. If the bit number of the first predetermined bit field is 4 and each bit is 0100, the retransmission scheduling DCI indicates that the second transport block is a transport block to be retransmitted. For another example, if each bit of the first predetermined bit field is 0110, the DCI is only the second transport block and the third transport block to be retransmitted.

In one possible implementation, the DCI including the transport block indication information to be retransmitted may include: downlink control information (ACK DCI) is acknowledged. The ACK DCI includes a second predetermined bit field, where the second predetermined bit field is used to carry indication information of a transmission block to be retransmitted. The number of bits in the second preset bit field is the same as the maximum number of transport blocks that can be transmitted in a PUR period configured by the access network device to the terminal device, that is, the number of bits in the first preset bit field in the retransmission scheduling DCI. And a second bit in the second predetermined bit field is used to indicate the transport block corresponding to the second bit, and the second bit is any bit in the second predetermined bit field. The second bit taking a different value may indicate whether or not to retransmit the transport block it indicates.

For example, if the second bit is 1, it represents that the corresponding transport block needs to be retransmitted, and if 0, it represents that the corresponding transport block does not need to be retransmitted. If the bit number of the second predetermined bit field is 4 and each bit is 0100, the ACK DCI indicates that the second transport block is a transport block to be retransmitted.

In one possible implementation, the DCI including the transport block indication information to be retransmitted may include: and backing off downlink control information (Fallback DCI). The Fallback DCI comprises a third preset bit field, and the third preset bit field is used for indicating a transmission block sent by the terminal device to the access network device. The number of bits in the third predetermined bit field is the same as the maximum number of transport blocks that can be transmitted over one PUR period and configured by the access network device to the terminal device, that is, the number of bits in the second predetermined bit field in the ACK DCI. And a third bit in the third predetermined bit field is used to indicate the transport block corresponding to the third bit, and the third bit is any bit in the third predetermined bit field. The third bit taking a different value may indicate whether or not to retransmit the transport block it indicates.

For example, if the third bit is 1, it represents that the corresponding transport block needs to be retransmitted, and if 0, it represents that the corresponding transport block does not need to be retransmitted. If the bit number of the third predetermined bit field is 4 and each bit is 0001, the ACK DCI indicates that the fourth transport block is a transport block to be retransmitted.

It should be noted that the number of bits in the first preset bit field, the second preset bit field, and the third preset bit field is fixed to the maximum number of transport blocks configured by the access network device, and if the maximum number of transport blocks configured by the network is 4, and the terminal device only sends 2 transport blocks, the last 2 bits in the first preset bit field, the second preset bit field, and the third preset bit field are invalid, and the terminal device may ignore the values of the last two bits. In addition, the sending of the retransmission scheduling DCI and/or the ACK DCI and/or the Fallback DCI to the terminal device may be determined by the access network device. The retransmission scheduling DCI may be sent in each PUR period, or the ACK DCI may be sent in each PUR period, or the retransmission scheduling DCI may be sent in part of the PUR periods, and the ACK DCI may be sent in part of the PUR periods.

430. And sending the transport block to be retransmitted to the access network equipment.

In a possible implementation manner, when the DCI is retransmitted and scheduled to schedule the terminal device to retransmit the retransmission transport block indicated by the DCI, the terminal device may be scheduled to retransmit on the PUR, or may be scheduled to retransmit on another resource, which may be specifically determined by the access network device.

Optionally, if the terminal device determines the transmission block to be retransmitted according to the ACK DCI, the terminal device may send the transmission block to be retransmitted to the access network device through the PUR of the PUR period after the initial transmission PUR period. It can be appreciated that the ACK DCI cannot schedule the terminal device for retransmission on other resources.

Optionally, if the terminal device performs retransmission according to the Fallback DCI, the random access process needs to be triggered, and the Idle state or the Inactive state is switched to the connection state through the random access process. In this way, the terminal device may send the transport block to be retransmitted to the access network device in the connected state.

Optionally, the terminal device may perform retransmission in an EDT manner if performing retransmission according to the Fallback DCI.

Through the embodiment of the application, the terminal device can send a transport block set to the access network device through the PUR in an Idle state or an Inactive state, wherein the transport block set comprises at least one transport block. If at least one transport block has a transport block which is not successfully transmitted, the terminal device receives DCI which includes indication information of the transport block to be retransmitted and is sent by the access network device. The DCI including the transport block indication information to be retransmitted may include a retransmission scheduling DCI, an ACK DCI, and a Fallback DCI. Wherein, HARQ Process Number bit field and newly added bit in the retransmission scheduling DCI, namely the first preset bit field is used for bearing the indication information of the transmission block to be retransmitted; a second preset bit field in the ACK DCI is used for bearing transmission block indication information to be retransmitted; and the third preset bit field in the Fallback DCI is used for bearing the indication information of the transmission block to be retransmitted. The three kinds of DCIs can indicate a transport block to be retransmitted in at least one transport block sent by the terminal device, and the retransmission modes which can be selected by the terminal device are different according to different DCIs. By the method, retransmission at the transmission block level can be realized, and the reliability of PUR data transmission is ensured.

Referring to fig. 7, fig. 7 is a schematic flowchart illustrating a data transmission method according to an embodiment of the present application. The data transmission method includes operations 710 to 730 as follows. The method execution body shown in fig. 7 may be an access network device, or the body may be a chip in the access network device. When the access network device performs the procedure shown in fig. 7, the following steps may be included:

710. and receiving a transmission block set sent by the terminal equipment on a pre-configured resource PUR, wherein the transmission block set comprises at least one transmission block, and the PUR is configured by the access network equipment.

The PUR is a periodic uplink resource configured by the access network device to the terminal device, and the terminal device can directly send uplink data to the access network device by using the PUR. Each PUR may include a plurality of PUR units therein.

In a possible implementation manner, if the access network device receives an indication signal before receiving the transport blocks sent by the terminal device, the number of the transport blocks sent by the terminal device may be determined according to the indication signal. The indication signal is sent by the terminal device, and the indication signal may indicate the number of transport blocks of at least one transport block sent by the terminal device. After the access network device determines the number of the transport blocks, it will blindly detect a corresponding number of transport blocks in the PUR. Wherein, the resource position for receiving the indication signal is located before the PUR, and the time interval (Offset) between the resource position and the starting position of the PUR is a first Offset, and the resource position for sending the indication signal and the first Offset are configured by the access network equipment.

Optionally, if the access network device does not receive the indication signal before receiving the transport block sent by the terminal device, it may be determined that the number of transport blocks sent by the terminal device is 1.

In one possible implementation, a first transport block in the transport block set corresponds to a plurality of candidate PUR units, and each of the plurality of candidate PUR units corresponds to a different number of transport blocks. The first transmission block is configured by the access network device corresponding to the multiple candidate PUR units, and the number of different transmission blocks corresponding to each candidate PUR unit in the multiple candidate PUR units is also configured by the access network device.

In a possible implementation manner, a first transport block in a transport block set corresponds to multiple candidate PUR units, and different candidate PUR units correspond to different numbers of transport blocks, where the multiple candidate PUR units corresponding to the first transport block and the number of transport blocks corresponding to each candidate PUR unit are configured to a terminal device by a network through RRC dedicated signaling. The terminal device may select a corresponding target candidate PUR unit according to the number of transmission blocks in the transmission block set to send a first transmission block in the transmission block set, and the access network device determines, according to the target candidate PUR unit transmitted by the first transmission block, transmission block data transmitted by the terminal device in the current PUR period, that is, the number of transmission blocks in the transmission block set.

Specifically, the terminal device may first determine the number of transmission blocks in the transmission block set to be transmitted, and if it is determined that the number is N, further determine a target candidate PUR unit corresponding to the N. The number of different transmission blocks (i.e., N is a different value) corresponds to different candidate PUR units, and N is an integer greater than or equal to 1. The terminal device can send the first transmission block in the transmission block set to be transmitted to the access network device through the target candidate PUR unit, and send the first transmission block to the access network device through the target candidate PUR unit. The access network equipment receives a first transport block in the target candidate PUR unit to indicate that the number of transport blocks in the transport block set is N. That is, if the access network device receives the first transport block sent by the terminal device on the target candidate PUR unit, it may be determined that the number of transport blocks sent by the terminal device is N.

720. And determining the transport blocks to be retransmitted in the transport block set.

If the access network device does not successfully receive part of the transport blocks when receiving the transport block set sent by the terminal device, it may be determined that the unsuccessfully received transport blocks are the transport blocks to be retransmitted.

730. And sending Downlink Control Information (DCI) including the indication information of the transmission block to be retransmitted to the terminal equipment.

The information of the transport blocks to be retransmitted can be used to indicate the transport blocks to be retransmitted in the transport block set.

In one possible implementation, the DCI including the transport block indication information to be retransmitted may include: and retransmitting and scheduling the DCI. The retransmission scheduling DCI is used to schedule the terminal device to retransmit the transport block to be retransmitted indicated by the retransmission scheduling DCI. The retransmission scheduling DCI comprises a first preset bit field, and the first preset bit field is used for bearing transmission block indication information to be retransmitted. The first predetermined bit field includes a hybrid automatic repeat request Process Number (HARQ Process Number) bit field and/or a newly added bit. The newly added bit refers to one or more bits added on the basis of the existing bit. The format of the retransmission scheduling DCI corresponding to the PUR retransmission is consistent with the format of the DCI used by the terminal device in the connected state, but since the PUR transmission implements retransmission in a single HARQ manner, that is, multiple transport blocks share one HARQ Process, the HARQ Process Number bit field in the retransmission scheduling DCI transmitted by the PUR is invalid. The HARQ Process Number bit field may be used to indicate a retransmission scheduled transport block. If it is sufficient to indicate the transport block to be retransmitted only by the HARQ Process Number, the bit may not be newly added; if the bit is not enough, the HARQ Process Number bit field and the newly added bit can be considered to jointly indicate the transport block to be retransmitted. The number of bits in the first preset bit field is the same as the maximum number of transport blocks that can be transmitted in a PUR period configured by the access network device to the terminal device.

Optionally, a first bit of the first preset bits is used to indicate a transport block corresponding to the first bit. Wherein the first bit is any bit in a first predetermined bit field. The first bit having a different value may indicate whether the transport block indicated by the first bit is to be retransmitted or not, i.e., whether the transport block is to be transmitted or not. For example, if the first bit is 1, it represents that the corresponding transport block needs to be retransmitted, and if 0, it represents that the corresponding transport block does not need to be retransmitted. If the bit number of the first predetermined bit field is 4 and each bit is 0100, the DCI indicates that the second transport block is a transport block to be retransmitted. For another example, if each bit of the first predetermined bit field is 0110, the DCI is only the second transport block and the third transport block to be retransmitted.

In a possible implementation manner, the DCI for retransmission scheduling may schedule the terminal device to retransmit on the PUR, or schedule the terminal device to retransmit on other resources, which may specifically be determined by the access network device.

In one possible implementation, the DCI including the transport block indication information to be retransmitted may include: downlink control information (ACK DCI) is acknowledged. The ACK DCI includes a second predetermined bit field, where the second predetermined bit field is used to carry indication information of a transmission block to be retransmitted. The number of bits in the second preset bit field is the same as the maximum number of transport blocks that can be transmitted in a PUR period configured by the access network device to the terminal device, that is, the number of bits in the first preset bit field in the retransmission scheduling DCI. And a second bit in the second predetermined bit field is used for indicating the transport block corresponding to the second bit, and the second bit is any bit in the second predetermined bit field. The second bit taking a different value may indicate whether or not to retransmit the transport block it indicates.

For example, if the second bit is 1, it represents that the corresponding transport block needs to be retransmitted, and if it is 0, it represents that the corresponding transport block does not need to be retransmitted. If the bit number of the second predetermined bit field is 4 and each bit is 0100, the ACK DCI indicates that the second transport block is a transport block to be retransmitted.

Optionally, the ACK DCI may indicate that the transmission block to be retransmitted by the terminal device is sent to the access network device in a PUR period after the initial transmission PUR period. It can be appreciated that ACK DCI does not schedule the terminal device to retransmit on other resources.

In one possible implementation, the DCI including the transport block indication information to be retransmitted may include: and backing off downlink control information (Fallback DCI). The Fallback DCI comprises a third preset bit field, and the third preset bit field is used for indicating a transmission block sent by the terminal device to the access network device. The number of bits in the third preset bit field is the same as the number of transport blocks which are configured for the terminal device by the access network device and can be transmitted at most in one PUR cycle, that is, the number of bits in the second preset bit field in the ACK DCI. And a third bit in the third predetermined bit field is used to indicate the transport block corresponding to the third bit, and the third bit is any bit in the third predetermined bit field. The third bit taking a different value may indicate whether or not to retransmit the transport block it indicates.

Optionally, the Fallback DCI may trigger the terminal device to execute a random access process, and switch from an Idle state or an Inactive state to a connected state through the random access process. In this way, the terminal device may send the transport block to be retransmitted to the access network device in the connected state.

Optionally, the Fallback DCI may also instruct the terminal device to retransmit in an EDT manner.

It should be noted that, the sending of the retransmission scheduling DCI and/or the ACK DCI and/or the Fallback DCI to the terminal device may be determined by the access network device. The retransmission scheduling DCI may be sent in each PUR period, or the ACK DCI may be sent in each PUR period, or the retransmission scheduling DCI may be sent in part of the PUR periods, and the ACK DCI may be sent in part of the PUR periods.

By the embodiment of the application, the access network equipment can determine the unsuccessfully received transmission block, namely the transmission block to be retransmitted after receiving the transmission block set sent by the terminal equipment, and further can send DCI (Downlink control information) comprising the transmission block indication information to be retransmitted to the terminal equipment to indicate the terminal equipment to retransmit. The DCI including the indication information of the transmission block to be retransmitted may include retransmission scheduling DCI, ACK DCI, and Fallback DCI, and the access network device may select different DCIs to instruct the terminal device to retransmit according to a specific situation. By the method, retransmission at the transmission block level can be realized, and the reliability of PUR data transmission is ensured.

Referring to fig. 8, fig. 8 is a schematic unit diagram of a data transmission device according to an embodiment of the present disclosure. The data transmission apparatus shown in fig. 8 may be used to perform some or all of the functions in the method embodiments described above with reference to fig. 4 and 7. The apparatus may be a terminal device, an apparatus in the terminal device, or an apparatus capable of being used in cooperation with the terminal device.

The logical structure of the apparatus may include: a transceiving unit 810, and a processing unit 820. When the apparatus is applied to a terminal device, wherein:

a transceiver unit 810, configured to send a transport block set to an access network device through a pre-configured resource PUR in response to a terminal device being in an Idle state or an Inactive state, where the transport block set includes at least one transport block, and the PUR is configured by the access network device;

a processing unit 820, configured to determine, if receiving downlink control information DCI including indication information of a transport block to be retransmitted sent by an access network device, a transport block to be retransmitted in a transport block set according to the DCI including the indication information of the transport block to be retransmitted;

the transceiver 810 is further configured to send a transport block to be retransmitted to the access network device.

In one possible implementation, the DCI including the transport block indication information to be retransmitted includes: the method comprises the steps of retransmitting and scheduling DCI, wherein a first preset bit field included in the retransmitting and scheduling DCI is used for bearing transmission block indication information to be retransmitted, and the first preset bit field comprises: a hybrid automatic repeat request Process Number HARQ Process Number bit field and/or a newly added bit; the method further comprises the following steps: the transceiver unit 810 is further configured to send a transport block to be retransmitted to the access network device through the uplink resource indicated by the retransmission scheduling DCI.

In a possible implementation manner, a first bit in the first preset bit domain is used to indicate a transport block to which the first bit corresponds, and the first bit is any bit in the first preset bit domain.

In one possible implementation, the DCI including the transport block indication information to be retransmitted includes: confirming downlink control information ACK DCI, wherein a second preset bit field included in the ACK DCI is used for bearing transmission block indication information to be retransmitted; the method further comprises the following steps: the transceiving unit 810 is further configured to send the transport block to be retransmitted to the access network device through the PUR.

In a possible implementation manner, a second bit in the second preset bit field is used to indicate a transport block corresponding to the second bit, and the second bit is any bit in the second preset bit field.

In one possible implementation, the DCI including the transport block indication information to be retransmitted includes: backing down downlink control information (Fallback DCI), wherein a third preset bit field included in the Fallback DCI is used for bearing transmission block indication information to be retransmitted; the method further comprises the following steps: the transceiver 810 is further configured to switch from Idle state or Inactive state to connected state through a random access procedure; and transmitting the transmission block to be retransmitted to the access network equipment in the connected state.

In a possible implementation manner, before sending the transport block set to the access network device through the first preconfigured resource PUR, the transceiving unit 810 is further configured to send an indication signal to the access network device, where the indication signal is used to indicate a transport block number of at least one transport block.

In one possible implementation, the resource location for transmitting the indication signal is located before the PUR, and the time interval Offset from the starting position of the PUR is a first Offset, and the resource location for transmitting the indication signal and the first Offset are determined according to configuration information configured by radio resource control RRC dedicated signaling transmitted by the access network device.

In a possible implementation manner, a first transport block in a transport block set corresponds to a plurality of candidate PUR units, and each of the candidate PUR units corresponds to a different number of transport blocks; the number of the candidate PUR units corresponding to the first transmission block is determined according to configuration information sent by access network equipment, and the number of the different transmission blocks corresponding to each candidate PUR unit in the candidate PUR units is determined according to the configuration information; the method further comprises the following steps: the processing unit 820 is further configured to determine the number of transport blocks in the transport block set; if the number is N, determining target candidate PUR units corresponding to N, wherein N is an integer greater than or equal to 1; the transceiving unit 810 is further configured to send a first transport block to the access network device through the first PUR candidate unit.

When the apparatus is applied to an access network device, wherein:

a transceiver unit 810, configured to receive a transport block set sent by a terminal device on a pre-configured resource PUR, where the transport block set includes at least one transport block, and the PUR is configured by an access network device;

a processing unit 820, configured to determine a transport block to be retransmitted in a transport block set;

the transceiver unit 810 is further configured to send downlink control information DCI including transport block indication information to be retransmitted to the terminal device.

In one possible implementation, the DCI including the transport block indication information to be retransmitted includes: the method comprises the steps of retransmitting and scheduling DCI, wherein a first preset bit field included in the retransmitting and scheduling DCI is used for bearing transmission block indication information to be retransmitted, and the first preset bit field comprises: a hybrid automatic repeat request Process Number HARQ Process Number bit field and/or a newly added bit; the retransmission scheduling DCI is also used to instruct the terminal device to transmit the uplink resource through which the transport block to be retransmitted passes.

In a possible implementation manner, a first bit in the first preset bit field is used to indicate a transport block to which the first bit corresponds, and the first bit is any bit in the first preset bit field.

In one possible implementation, the DCI including the transport block indication information to be retransmitted includes: confirming downlink control information ACK DCI, wherein a second preset bit field included in the ACK DCI is used for bearing transmission block indication information to be retransmitted; the ACK DCI is also used for instructing the terminal equipment to send a transmission block to be retransmitted to the access network equipment through the PUR.

In one possible implementation, the DCI including the transport block indication information to be retransmitted includes: backing down downlink control information (Fallback DCI), wherein a third preset bit field included in the Fallback DCI is used for bearing transmission block indication information to be retransmitted; the Fallback DCI is further configured to instruct the terminal device to switch to a connected state, and send a transport block to be retransmitted in the connected state.

In a possible implementation manner, before receiving, on the pre-configured resource PUR, a transport block set sent by the terminal device, an indication signal sent by the terminal device is received, where the indication signal is used to determine the transport block number of at least one transport block.

In a possible implementation manner, a first transport block in a transport block set corresponds to a plurality of candidate PUR units, and each of the candidate PUR units corresponds to a different number of transport blocks; the multiple candidate PUR units corresponding to the first transmission block are configured by the access network equipment, and the number of different transmission blocks corresponding to each candidate PUR unit in the multiple candidate PUR units is configured by the access network equipment; the method further comprises the following steps: if the transceiver unit 810 receives a first transport block in the target candidate PUR unit, the processing unit 820 is further configured to determine the number of transport blocks in the transport block set to be N, where N is an integer greater than or equal to 1.

Through the embodiment of the application, the terminal equipment can send a transport block set to the access network equipment through the PUR in the Idle state or the Inactive state, wherein the transport block set comprises at least one transport block. If at least one transport block has a transport block which is not successfully transmitted, the terminal device receives DCI which includes indication information of the transport block to be retransmitted and is sent by the access network device. The DCI including the transport block indication information to be retransmitted may include a retransmission scheduling DCI, an ACK DCI, and a Fallback DCI. Wherein, HARQ Process Number bit field and newly added bit in the retransmission scheduling DCI, namely the first preset bit field is used for bearing the indication information of the transmission block to be retransmitted; a second preset bit field in the ACK DCI is used for bearing transmission block indication information to be retransmitted; and a third preset bit field in the Fallback DCI is used for bearing the indication information of the transmission block to be retransmitted. The three DCIs can indicate a transport block to be retransmitted in at least one transport block sent by the terminal device, and the retransmission modes which can be selected by the terminal device are different according to different DCIs.

For the access network device, after receiving the transport block set sent by the terminal device, the access network device may determine the transport block that is not successfully received, that is, the transport block to be retransmitted, and then may send DCI including the transport block indication information to be retransmitted to the terminal device to indicate the terminal device to retransmit. The DCI including the indication information of the transmission block to be retransmitted may include retransmission scheduling DCI, ACK DCI, and Fallback DCI, and the access network device may select different DCIs to instruct the terminal device to retransmit according to a specific situation. By the method, retransmission at the transmission block level can be realized, and the reliability of PUR data transmission is ensured.

Referring to fig. 9, fig. 9 is a simplified schematic diagram of a physical structure of a data transmission device according to an embodiment of the present disclosure, where the data transmission device includes a processor 910, a memory 920, and a communication interface 930, and the processor 910, the memory 920, and the communication interface 930 are connected by one or more communication buses. The data transmission device can be a chip, a chip module or the like.

The processor 910 is configured to support the data transmission apparatus to perform the functions corresponding to the methods in fig. 4 and fig. 7. It should be understood that, in the embodiment of the present application, the processor 910 may be a Central Processing Unit (CPU), and the processor may also be other general-purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs), discrete hardware components, or other programmable logic devices, discrete gate or transistor logic devices. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The memory 920 is used to store program codes and the like. The memory 920 in embodiments of the present application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example and not limitation, many forms of Random Access Memory (RAM) are available, such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), Enhanced SDRAM (ESDRAM), synchlink DRAM (SLDRAM), and direct bus RAM (DR RAM).

Communication interface 930 provides for the transmission and reception of data, information, messages or the like and may also be described as a transceiver, transceiving circuitry, or the like.

In the embodiment of the present application, when the data transmission apparatus is applied to a terminal device, the processor 910 calls the program code stored in the memory 920 to perform the following operations:

when the apparatus is applied to a terminal device, wherein:

the control communication interface 930 sends a transport block set to the access network device through a pre-configured resource PUR in response to the terminal device being in an Idle state or an Inactive state, where the transport block set includes at least one transport block, and the PUR is configured by the access network device;

processor 910 invokes the program code stored in memory 920, if receiving downlink control information DCI including indication information of a transport block to be retransmitted sent by an access network device, then determining a transport block to be retransmitted in a transport block set according to the DCI including the indication information of the transport block to be retransmitted;

the control communication interface 930 sends the transport blocks to be retransmitted to the access network device.

In one possible implementation, the DCI including the transport block indication information to be retransmitted includes: the method comprises the steps of retransmitting and scheduling DCI, wherein a first preset bit field included in the retransmitting and scheduling DCI is used for bearing transmission block indication information to be retransmitted, and the first preset bit field comprises: a hybrid automatic repeat request Process Number HARQ Process Number bit field and/or a newly added bit; the method further comprises the following steps: the control communication interface 930 sends the transport block to be retransmitted to the access network device through the uplink resource indicated by the retransmission scheduling DCI.

In one possible implementation, the DCI including the transport block indication information to be retransmitted includes: confirming downlink control information ACK DCI, wherein a second preset bit field included in the ACK DCI is used for bearing transmission block indication information to be retransmitted; the method further comprises the following steps: the control communication interface 930 sends the transport blocks to be retransmitted to the access network device through the PUR.

In one possible implementation, the DCI including the transport block indication information to be retransmitted includes: backing down downlink control information (Fallback DCI), wherein a third preset bit field included in the Fallback DCI is used for bearing transmission block indication information to be retransmitted; the method further comprises the following steps: the control communication interface 930 switches from Idle state or Inactive state to connected state through random access process; and transmitting the transmission block to be retransmitted to the access network equipment in the connected state.

In one possible implementation, before sending the transport block set to the access network device through the first pre-configured resource PUR, the control communication interface 930 sends an indication signal to the access network device, where the indication signal is used to indicate the number of transport blocks of at least one transport block.

In a possible implementation manner, a first transport block in a transport block set corresponds to a plurality of candidate PUR units, and each of the candidate PUR units corresponds to a different number of transport blocks; the number of the candidate PUR units corresponding to the first transmission block is determined according to configuration information sent by access network equipment, and the number of the different transmission blocks corresponding to each candidate PUR unit in the candidate PUR units is determined according to the configuration information; the method further comprises the following steps: processor 910 invokes program code stored in memory 920 to determine the number of transport blocks in the transport block set; if the number is N, determining target candidate PUR units corresponding to N, wherein N is an integer greater than or equal to 1; the control communication interface 930 transmits the first transport block to the access network device through the first PUR candidate unit.

When the apparatus is applied to an access network device, wherein:

the control communication interface 930 receives a transport block set sent by the terminal device on a pre-configured resource PUR, where the transport block set includes at least one transport block, and the PUR is configured by the access network device;

processor 910 invokes program code stored in memory 920 to determine transport blocks to retransmit in the set of transport blocks;

the control communication interface 930 transmits downlink control information DCI including transport block indication information to be retransmitted to the terminal device.

In one possible implementation, the DCI including the transport block indication information to be retransmitted includes: backing down downlink control information (Fallback DCI), wherein a third preset bit field included in the Fallback DCI is used for bearing transmission block indication information to be retransmitted; the Fallback DCI is further configured to instruct the terminal device to switch to a connected state, and send a transmission block to be retransmitted in the connected state.

In a possible implementation manner, before receiving the transport block set sent by the terminal device on the pre-configured resource PUR, an indication signal sent by the terminal device is received, where the indication signal is used to determine the transport block number of at least one transport block.

In a possible implementation manner, the resource position for sending the indication signal is located before the PUR, and the time interval Offset from the starting position of the PUR is a first Offset, the resource position for sending the indication signal and the first Offset are determined according to configuration information, and the configuration information is configured through radio resource control RRC dedicated signaling sent by the access network device.

In a possible implementation manner, a first transport block in a transport block set corresponds to a plurality of candidate PUR units, and each of the candidate PUR units corresponds to a different number of transport blocks; the multiple candidate PUR units corresponding to the first transmission block are configured by the access network equipment, and the number of different transmission blocks corresponding to each candidate PUR unit in the multiple candidate PUR units is configured by the access network equipment; the method further comprises the following steps: if communication interface 930 receives the first transport block in the target candidate PUR unit, processor 910 invokes program code stored in memory 920 to determine the number of transport blocks in the set of transport blocks to be N, where N is an integer greater than or equal to 1.

The modules/units included in the apparatuses and products described in the above embodiments may be software modules/units, or may also be hardware modules/units, or may also be part of software modules/units and part of hardware modules/units. For example, for each device or product applied to or integrated into a chip, each module/unit included in the device or product may be implemented by hardware such as a circuit, or at least a part of the module/unit may be implemented by a software program running on a processor integrated within the chip, and the rest (if any) part of the module/unit may be implemented by hardware such as a circuit; for each device and product applied to or integrated with the chip module, each module/unit included in the device and product may be implemented by hardware such as a circuit, and different modules/units may be located in the same component (e.g., a chip, a circuit module, etc.) or different components of the chip module, or at least part of the modules/units may be implemented by a software program running on a processor integrated inside the chip module, and the rest (if any) part of the modules/units may be implemented by hardware such as a circuit; for each device and product applied to or integrated in the terminal, each module/unit included in the device and product may be implemented by using hardware such as a circuit, and different modules/units may be located in the same component (e.g., a chip, a circuit module, etc.) or different components in the terminal, or at least part of the modules/units may be implemented by using a software program running on a processor integrated in the terminal, and the rest (if any) part of the modules/units may be implemented by using hardware such as a circuit.

Through the embodiment of the application, the terminal equipment can send a transport block set to the access network equipment through the PUR in the Idle state or the Inactive state, wherein the transport block set comprises at least one transport block. If at least one transport block has a transport block which is not successfully transmitted, the terminal device receives DCI which includes indication information of a transport block to be retransmitted and is sent by an access network device. The DCI including the transport block indication information to be retransmitted may include a retransmission scheduling DCI, an ACK DCI, and a Fallback DCI. The HARQ Process Number bit field and the newly added bit in the retransmission scheduling DCI, namely the first preset bit field, are used for bearing the indication information of the transmission block to be retransmitted; a second preset bit field in the ACK DCI is used for bearing transmission block indication information to be retransmitted; and a third preset bit field in the Fallback DCI is used for bearing the indication information of the transmission block to be retransmitted. The three DCIs can indicate a transport block to be retransmitted in at least one transport block sent by the terminal device, and the retransmission modes which can be selected by the terminal device are different according to different DCIs.

For the access network device, after receiving the transport block set sent by the terminal device, the access network device may determine the transport block that is not successfully received, that is, the transport block to be retransmitted, and may send DCI including transport block indication information to be retransmitted to the terminal device to indicate the terminal device to retransmit the DCI. The DCI including the indication information of the transmission block to be retransmitted may include retransmission scheduling DCI, ACK DCI, and Fallback DCI, and the access network device may select different DCIs to instruct the terminal device to retransmit according to a specific situation. By the method, retransmission at the transmission block level can be realized, and the reliability of PUR data transmission is ensured.

Referring to fig. 10, fig. 10 is a simplified schematic diagram of a chip of a data transmission device according to an embodiment of the present application, where the chip includes a processor 1010 and a data interface 1020. The chip can be used to handle the corresponding functions of the method of fig. 4. The chip may be included in a data transmission device as shown in fig. 9. The chip may also be included in a chip module.

Referring to fig. 11, fig. 11 is a simplified schematic diagram of a chip module according to an embodiment of the present application, where the chip module includes a chip 1110 and a transceiver 1120 for transmitting a transport block set, and when the chip module is applied to a terminal device, the chip module includes:

the chip 1110 is configured to send a transport block set to an access network device through a pre-configured resource PUR in response to a terminal device being in an Idle state or an Inactive state, where the transport block set includes at least one transport block, and the PUR is configured by the access network device;

the chip 1110 is further configured to determine, if downlink control information DCI including indication information of a transport block to be retransmitted, which is sent by an access network device is received through the transceiver 1120, a transport block to be retransmitted in a transport block set according to the DCI including the indication information of the transport block to be retransmitted;

the chip 1110 is also used to trigger the transceiver 1120 to send a transport block to be retransmitted to the access network device.

In one possible implementation, the DCI including the transport block indication information to be retransmitted includes: the method comprises the steps of retransmitting and scheduling DCI, wherein a first preset bit field included in the retransmitting and scheduling DCI is used for bearing transmission block indication information to be retransmitted, and the first preset bit field comprises: a hybrid automatic repeat request Process Number HARQ Process Number bit field and/or a newly added bit; the method further comprises the following steps: the chip 1110 is further configured to trigger the transceiver 1120 to send the transport block to be retransmitted to the access network device through the uplink resource indicated by the retransmission scheduling DCI.

In one possible implementation, the DCI including the transport block indication information to be retransmitted includes: confirming downlink control information ACK DCI, wherein a second preset bit field included in the ACK DCI is used for bearing transmission block indication information to be retransmitted; the method further comprises the following steps: the chip 1110 is further configured to trigger the transceiver 1120 to send a transport block to be retransmitted to the access network device through the PUR.

In one possible implementation, the DCI including the transport block indication information to be retransmitted includes: backing down downlink control information (Fallback DCI), wherein a third preset bit field included in the Fallback DCI is used for bearing transmission block indication information to be retransmitted; the method further comprises the following steps: the chip 1110 is further configured to trigger the transceiver 1120 to switch from Idle state or Inactive state to connected state through a random access procedure; and transmitting the transmission block to be retransmitted to the access network equipment in the connected state.

In a possible implementation, before sending the transport block set to the access network device through the first pre-configured resource PUR, the chip 1110 is further configured to trigger the transceiver 1120 to send an indication signal to the access network device, where the indication signal is used to indicate a transport block number of at least one transport block.

In a possible implementation manner, a first transport block in a transport block set corresponds to a plurality of candidate PUR units, and each of the candidate PUR units corresponds to a different number of transport blocks; the number of the candidate PUR units corresponding to the first transmission block is determined according to configuration information sent by access network equipment, and the number of the different transmission blocks corresponding to each candidate PUR unit in the candidate PUR units is determined according to the configuration information; the method further comprises the following steps: the chip 1110 is further configured to determine the number of transport blocks in a transport block set; if the number is N, determining target candidate PUR units corresponding to the N, wherein the number of different transmission blocks corresponds to different candidate PUR units, and the N is an integer greater than or equal to 1; the chip 1110 is further configured to trigger the transceiver 1120 to send a first transport block to the access network device via the first PUR candidate unit; and sending a first transport block to the access network equipment through the target candidate PUR unit to indicate that the number of the transport blocks in the transport block set is N.

When this chip module is applied to access network equipment, wherein:

the chip 1110 is configured to receive a transport block set sent by a terminal device through a transceiver 1120 on a pre-configured resource PUR, where the transport block set includes at least one transport block, and the PUR is configured by an access network device;

the chip 1110 is further configured to determine a transport block to be retransmitted in the transport block set;

the chip 1110 is further configured to trigger the transceiver 1120 to send downlink control information DCI including transport block indication information to be retransmitted to the terminal device.

In a possible implementation manner, a first transport block in a transport block set corresponds to a plurality of candidate PUR units, and each of the candidate PUR units corresponds to a different number of transport blocks; the multiple candidate PUR units corresponding to the first transmission block are configured by the access network equipment, and the number of different transmission blocks corresponding to each candidate PUR unit in the multiple candidate PUR units is configured by the access network equipment; the method further comprises the following steps: if the chip 1110 triggers the transceiver 1120 to receive the first transport block in the target candidate PUR unit, the chip 1110 is further configured to determine that the number of transport blocks in the transport block set is N, where the number of different transport blocks corresponds to different candidate PUR units, and N is an integer greater than or equal to 1; wherein, the first transport block received in the target candidate PUR unit is used for indicating that the number of the transport blocks in the transport block set is N.

Through the embodiment of the application, the terminal device can send a transport block set to the access network device through the PUR in an Idle state or an Inactive state, wherein the transport block set comprises at least one transport block. If at least one transport block has a transport block which is not successfully transmitted, the terminal device receives DCI which includes indication information of the transport block to be retransmitted and is sent by the access network device. The DCI including the transport block indication information to be retransmitted may include a retransmission scheduling DCI, an ACK DCI, and a Fallback DCI. The HARQ Process Number bit field and the newly added bit in the retransmission scheduling DCI, namely the first preset bit field, are used for bearing the indication information of the transmission block to be retransmitted; a second preset bit field in the ACK DCI is used for bearing transmission block indication information to be retransmitted; and the third preset bit field in the Fallback DCI is used for bearing the indication information of the transmission block to be retransmitted. The three DCIs can indicate a transport block to be retransmitted in at least one transport block sent by the terminal device, and the retransmission modes which can be selected by the terminal device are different according to different DCIs.

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

The steps in the method of the embodiment of the invention can be sequentially adjusted, combined and deleted according to actual needs.

The units in the processing equipment of the embodiment of the invention can be merged, divided and deleted according to actual needs.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, 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 according to the embodiments of the present application are all or partially generated when the computer program instructions are loaded and executed 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, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (e.g., coaxial cable, fiber optic, digital subscriber line) or wirelessly (e.g., infrared, wireless, microwave, etc.). Computer-readable storage media can be any available media that can be accessed by a computer or a data storage device, such as a server, data center, etc., that includes one or more available media. The usable medium may be a magnetic medium (e.g., floppy Disk, memory Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A data transmission method is applied to terminal equipment, and the method comprises the following steps:

responding to the terminal equipment in an Idle state or an Inactive state, and sending a transmission block set to access network equipment through a pre-configured resource PUR, wherein the transmission block set comprises at least one transmission block, and the PUR is configured by the access network equipment;

if receiving downlink control information DCI which is sent by the access network equipment and comprises indication information of the transmission blocks to be retransmitted, determining the transmission blocks to be retransmitted in the transmission block set according to the DCI which comprises the indication information of the transmission blocks to be retransmitted;

2. The method of claim 1, wherein the DCI comprising the transport block indication information to be retransmitted comprises: a retransmission scheduling DCI, where a first preset bit field included in the retransmission scheduling DCI is used to carry the indication information of the transmission block to be retransmitted, and the first preset bit field includes: a hybrid automatic repeat request Process Number HARQ Process Number bit field and/or a newly added bit;

the sending the transport block to be retransmitted to the access network device includes:

and sending the transmission block to be retransmitted to the access network equipment through the uplink resource indicated by the retransmission scheduling DCI.

3. The method according to claim 2, wherein a first bit in the first predetermined bit field is used to indicate a transport block to which the first bit corresponds, and the first bit is any bit in the first predetermined bit field.

4. The method of claim 1, wherein the DCI comprising the transport block indication information to be retransmitted comprises: confirming downlink control information ACK DCI, wherein a second preset bit field included in the ACK DCI is used for bearing the transmission block indication information to be retransmitted;

and sending the transmission block to be retransmitted to the access network equipment through the PUR.

5. The method according to claim 4, wherein a second bit in the second predetermined bit field is used for indicating a transport block to which the second bit corresponds, and the second bit is any bit in the second predetermined bit field.

6. The method of claim 1, wherein the DCI comprising the transport block indication information to be retransmitted comprises: backing back Downlink Control Information (DCI), wherein a third preset bit field included in the DCI is used for bearing the indication information of the transmission block to be retransmitted;

switching from the Idle state or the Inactive state to a connection state through a random access process;

and sending the transport block to be retransmitted to the access network equipment in the connected state.

7. The method of claim 1, wherein prior to sending the set of transport blocks to the access network device over the first pre-configured resource, PUR, the method further comprises:

and sending an indication signal to the access network equipment, wherein the indication signal is used for indicating the number of the at least one transport block.

8. The method of claim 7, wherein a resource location for sending the indication signal is located before the PUR, and a time interval Offset from a starting location of the PUR is a first Offset, and wherein the resource location for sending the indication signal and the first Offset are determined according to configuration information configured by Radio Resource Control (RRC) dedicated signaling sent by the access network device.

9. The method of claim 1, wherein a first transport block in the transport block set corresponds to a plurality of candidate PUR units, and wherein each of the plurality of candidate PUR units corresponds to a different number of transport blocks; the number of the candidate PUR units corresponding to the first transmission block is determined according to configuration information sent by the access network equipment, and the number of the different transmission blocks corresponding to each candidate PUR unit in the candidate PUR units is determined according to the configuration information;

the method further comprises the following steps:

determining a number of transport blocks in the transport block set;

if the number is N, determining a target candidate PUR unit corresponding to the N, wherein the N is an integer greater than or equal to 1;

and sending the first transmission block to the access network equipment through the target PUR candidate unit.

10. A data transmission method, applied to an access network device, the method comprising:

determining a transmission block to be retransmitted in the transmission block set;

11. The method of claim 10, wherein the DCI comprising the transport block indication information to be retransmitted comprises: a retransmission scheduling DCI, where a first preset bit field included in the retransmission scheduling DCI is used to carry the indication information of the transmission block to be retransmitted, and the first preset bit field includes: a hybrid automatic repeat request Process Number HARQ Process Number bit field and/or a newly added bit; the retransmission scheduling DCI is further configured to instruct the terminal device to send an uplink resource through which the transport block to be retransmitted passes.

12. The method of claim 11, wherein a first bit in the first predetermined bit field is used to indicate a transport block to which the first bit corresponds, and wherein the first bit is any bit in the first predetermined bit field.

13. The method of claim 10, wherein the DCI comprising the transport block indication information to be retransmitted comprises: confirming downlink control information ACK DCI, wherein a second preset bit field included in the ACK DCI is used for bearing the transmission block indication information to be retransmitted; and the ACK DCI is also used for indicating the terminal equipment to send the transmission blocks to be retransmitted to the access network equipment through the PUR.

14. The method according to claim 13, wherein a second bit in the second predetermined bit field is used for indicating a transport block to which the second bit corresponds, and the second bit is any bit in the second predetermined bit field.

15. The method of claim 10, wherein the DCI comprising transport block indication information to be retransmitted comprises: backing back Downlink Control Information (DCI), wherein a third preset bit field included in the DCI is used for bearing the indication information of the transmission block to be retransmitted; the Fallback DCI is further configured to instruct the terminal device to switch to a connected state, and send the transmission block to be retransmitted in the connected state.

16. The method of claim 1, wherein prior to receiving the set of transport blocks sent by the terminal device on the pre-configured resource PUR, the method further comprises:

and receiving an indication signal sent by the terminal equipment, wherein the indication signal is used for determining the number of the at least one transport block.

17. The method of claim 16, wherein a resource location for receiving the indication signal is located before the PUR, and wherein a time interval Offset from a start location of the PUR is a first Offset, wherein the resource location for receiving the indication signal and the first Offset are configured by the access network device.

18. The method of claim 10, wherein a first transport block in the transport block set corresponds to a plurality of candidate PUR units, and wherein each of the plurality of candidate PUR units corresponds to a different number of transport blocks; the plurality of candidate PUR units corresponding to the first transmission block are configured by the access network equipment, and the number of different transmission blocks corresponding to each candidate PUR unit in the plurality of candidate PUR units is configured by the access network equipment;

the method further comprises the following steps:

and if the first transmission block is received in a target candidate PUR unit, determining that the number of the transmission blocks in the transmission block set is N, wherein the target candidate PUR unit is determined by the terminal equipment, and N is an integer greater than or equal to 1.

19. A data transmission apparatus, applied to a terminal device, wherein the terminal device is in an Idle state, the apparatus comprising:

a transceiver unit, configured to send a transport block set to an access network device through a pre-configured resource PUR in response to a situation that the terminal device is in an Idle state or an Inactive state, where the transport block set includes at least one transport block, and the PUR is configured by the access network device;

a processing unit, configured to determine, if receiving DCI including indication information of a transport block to be retransmitted sent by the access network device, a transport block to be retransmitted in the transport block set according to the DCI including the indication information of the transport block to be retransmitted;

20. A data transmission apparatus comprising a processor, a memory for storing a computer program comprising program instructions, the processor being configured to invoke the program instructions, to perform a data transmission method as claimed in any one of claims 1 to 9, or to perform a data transmission method as claimed in any one of claims 10 to 18.

21. A computer-readable storage medium having stored thereon one or more instructions adapted to be loaded by a processor and to carry out a data transfer method according to any one of claims 1 to 9, or a data transfer method according to any one of claims 10 to 18.

22. A chip comprising a processor and a data interface, the processor reading instructions stored on a memory through the data interface to perform the data transfer method of any one of claims 1 to 9 or to perform the data transfer method of any one of claims 10 to 18.

23. A chip module, characterized in that the chip module comprises a chip and a transceiver for transmitting a set of transport blocks, the chip module being applied to a terminal device, wherein:

the chip is used for responding to the terminal equipment being in an Idle state or an Inactive state, and sending a transmission block set to access network equipment through a pre-configured resource PUR and the transceiver, wherein the transmission block set comprises at least one transmission block, and the PUR is configured by the access network equipment;

the chip is further configured to determine a transport block to be retransmitted in the transport block set according to the DCI including the indication information of the transport block to be retransmitted if the DCI including the indication information of the transport block to be retransmitted, which is sent by the access network device, is received by the transceiver;

the chip is further configured to trigger the transceiver to send the transport block to be retransmitted to the access network device.