CN117479301A

CN117479301A - Data transmission method and communication device

Info

Publication number: CN117479301A
Application number: CN202210867953.2A
Authority: CN
Inventors: 徐敏
Original assignee: Spreadtrum Communications Shanghai Co Ltd
Current assignee: Spreadtrum Communications Shanghai Co Ltd
Priority date: 2022-07-22
Filing date: 2022-07-22
Publication date: 2024-01-30
Also published as: WO2024017355A1

Abstract

The application provides a data transmission method and a communication device, wherein the data transmission method comprises the following steps: receiving a paging message; and responding to the paging message, and sending indication information, wherein the indication information is used for indicating a transmission mode adopted by data transmission.

Description

Data transmission method and communication device

Technical Field

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

Background

In a wireless communication system, if there is data to be transmitted to a network side, the terminal device may determine a transmission mode for transmitting the data according to whether the data satisfies a preset condition. For example, if the amount of data to be transmitted is less than a certain threshold, it may be determined that the data transmission is performed by small packet transmission (Small Data Transmission, SDT). When the network device has data to be sent to the terminal device, the network device can page the terminal device and enable the terminal device to switch from a non-connection state to a connection state for communication, so that the selection of a transmission mode cannot be realized.

Disclosure of Invention

The embodiment of the application provides a data transmission method and a communication device, which can realize that the terminal equipment indicates a transmission mode adopted by data transmission to the network equipment in the scene that the network equipment pages the terminal equipment.

In a first aspect, an embodiment of the present application provides a data transmission method, where the method includes:

receiving a paging message;

and responding to the paging message, and sending indication information, wherein the indication information is used for indicating a transmission mode adopted by data transmission.

Based on the description of the first aspect, when receiving the paging message of the network side, the terminal device responds to the paging message and sends the indication information for indicating the transmission mode adopted by the data transmission to the network side, so that the terminal device indicates the transmission mode adopted by the data transmission to the network device in the scene that the network device pages the terminal device.

In an alternative embodiment, the sending indication information in response to the paging message includes:

and responding to the paging message, and sending first indication information, wherein the first indication information is used for indicating that the data transmission adopts a first transmission mode, and the first transmission mode is the data transmission mode adopted when the data transmission is in an inactive state.

By the method, the network side can conveniently determine the first transmission mode adopted when the terminal equipment is in the inactive state.

In an alternative embodiment, the sending the first indication information includes:

and sending a first message, wherein the first message comprises the first indication information, and the first message is a message 3 or a message A in a random access process.

By the method, the first transmission mode of data transmission is indicated by using the random access message in the random access process, so that the network side can conveniently determine the first data transmission mode adopted by data transmission, the network side is compatible with the existing message, transmission resources are saved, and the application scene is wide.

and transmitting a media access control protocol data unit (MAC PDU), wherein the MAC PDU comprises a media access control sub-header (MAC) sub-header, the MAC sub-header comprises a logic channel identification field, and the logic channel identification field is used for indicating that the data transmission adopts a first transmission mode.

In this way, the first transmission mode adopted for data transmission can be indicated by the logical channel identification field, and the method is compatible with the existing field.

and sending a second message, wherein the second message comprises the first indication information, the second message is a recovery request message, and the first indication information is a recovery reason field included in the second message.

In this way, the first transmission mode adopted for data transmission can be indicated by the restoration reason field in the restoration request message, and the restoration request message is compatible with the existing field.

and sending a second message, wherein the second message comprises the first indication information, and the second message is a recovery request message.

By the mode, the first indication information is carried by the recovery request message, so that the additional sending of the message for indication is avoided, and transmission resources are saved.

and responding to the paging message, and sending second indication information, wherein the second indication information is used for indicating that the data transmission adopts a second transmission mode, and the second transmission mode is the data transmission mode adopted when the data transmission is in a connection state.

In this way, the terminal device can also indicate the second transmission mode adopted by the data transmission to the network side, so as to adapt to various application scenarios.

In an alternative embodiment of the present invention,

before the second indication information is sent, the method further comprises:

and monitoring a Physical Downlink Control Channel (PDCCH) in a search space corresponding to the first transmission mode.

By the mode, the terminal equipment can keep in the first transmission mode for data transmission, and then inform the network side of adopting the second transmission mode, so that the loss of data packets can be avoided.

In a second aspect, an embodiment of the present application provides a data transmission method, where the method includes:

sending a paging message;

and receiving indication information, wherein the indication information is used for indicating a transmission mode adopted by data transmission.

In an alternative embodiment, the receiving the indication information includes:

and receiving first indication information, wherein the first indication information is used for indicating that the data transmission adopts a first transmission mode, and the first transmission mode is a data transmission mode adopted when the data transmission is in an inactive state.

In an alternative embodiment, the receiving the first indication information includes:

and receiving a first message, wherein the first message comprises the first indication information, and the first message is a message 3 or a message A in a random access process.

and receiving a media access control protocol data unit (MAC PDU), wherein the MAC PDU comprises a media access control sub-header (MAC) sub-header, the MAC sub-header comprises a logic channel identification field, and the logic channel identification field is used for indicating that the data transmission adopts a first transmission mode.

and receiving a second message, wherein the second message comprises the first indication information, the second message is a recovery request message, and the first indication information is a recovery reason field included in the second message.

and receiving a second message, wherein the second message comprises the first indication information, and the second message is a recovery request message.

and receiving second indication information, wherein the second indication information is used for indicating that the data transmission adopts a second transmission mode, and the second transmission mode is the data transmission mode adopted when the data transmission is in a connection state.

In an alternative embodiment of the present invention,

before receiving the second indication information, the method further comprises:

and transmitting a Physical Downlink Control Channel (PDCCH) in the search space corresponding to the first transmission mode.

In a third aspect, embodiments of the present application provide a communication device comprising means for implementing the method in any one of the possible implementations of the first and second aspects.

In a fourth aspect, embodiments of the present application provide a communications apparatus comprising a processor and a memory, the processor and the memory being interconnected, the memory being configured to store a computer program comprising program instructions, the processor being configured to invoke the program instructions to perform a method according to the first aspect or any alternative embodiment of the first aspect or to perform a method according to the second aspect or any alternative embodiment of the second aspect.

In a fifth aspect, embodiments of the present application provide a chip comprising a processor coupled to an interface, the processor and the interface; the interface is for receiving or outputting signals and the processor is for executing code instructions to perform a method according to the first aspect or any optional implementation of the first aspect or to perform a method according to the second aspect or any optional implementation of the second aspect.

In a sixth aspect, an embodiment of the present application provides a module apparatus, where the module apparatus includes a communication module, a power module, a storage module, and a chip module, where: the power supply module is used for providing electric energy for the module equipment; the storage module is used for storing data and/or instructions; the communication module is communicated with external equipment; the chip module is used for calling data and/or instructions stored in the storage module, and executing the method according to the first aspect or any optional implementation manner of the first aspect or executing the method according to the second aspect or any optional implementation manner of the second aspect in combination with the communication module.

In a seventh aspect, embodiments of the present application provide a computer readable storage medium storing a computer program, the computer program comprising program instructions, which when executed by an electronic device, implement a method according to the first aspect or any optional implementation of the first aspect, or perform a method according to the second aspect or any optional implementation of the second aspect.

Drawings

Fig. 1a is a schematic diagram of a four-step random access procedure according to an embodiment of the present application;

Fig. 1b is a schematic diagram of a two-step random access procedure according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of a communication system according to an embodiment of the present application;

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

fig. 4 is a schematic structural diagram of a communication device according to an embodiment of the present application;

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

fig. 6 is a schematic structural diagram of still another communication device according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a module device according to an embodiment of the present application.

Detailed Description

In the embodiment of the present application, unless otherwise specified, the character "/" indicates that the front-rear association object is one or a relationship. For example, A/B may represent A or B. "and/or" describes an association relationship of an association object, meaning that three relationships may exist. For example, a and/or B may represent: a exists alone, A and B exist together, and B exists alone.

It should be noted that the terms "first," "second," and the like in the embodiments of the present application are used for distinguishing between description and not necessarily for indicating or implying a relative importance or number of features or characteristics that are indicated, nor does it imply a sequential order.

In the embodiments of the present application, "at least one" means one or more, and "a plurality" means two or more. Furthermore, "at least one item(s)" below, or the like, refers to any combination of these items, and may include any combination of single item(s) or plural items(s). For example, at least one (one) of A, B or C may represent: a, B, C, a and B, a and C, B and C, or A, B and C. Wherein each of A, B, C may itself be an element or a collection comprising one or more elements.

In this application embodiments, "exemplary," "in some embodiments," "in another embodiment," etc. are used to indicate an example, instance, or illustration. Any embodiment or design described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, the term use of an example is intended to present concepts in a concrete fashion.

"of", "corresponding" and "corresponding" in the embodiments of the present application may be sometimes used in combination, and it should be noted that the meaning to be expressed is consistent when the distinction is not emphasized. In the embodiments of the present application, communications and transmissions may sometimes be mixed, and it should be noted that, when the distinction is not emphasized, the meaning expressed is consistent. For example, a transmission may include sending and/or receiving, either nouns or verbs.

The equal to that relates to in this application embodiment can be with being greater than even using, is applicable to the technical scheme that adopts when being greater than, also can be with being less than even using, is applicable to the technical scheme that adopts when being less than. It should be noted that when the number is equal to or greater than the sum, the number cannot be smaller than the sum; when the value is equal to or smaller than that used together, the value is not larger than that used together.

Some terms related to the embodiments of the present application are explained below to facilitate understanding by those skilled in the art.

1. And a terminal device. In this embodiment of the present application, the terminal device is a device with a wireless transceiver function, and may be referred to as a terminal, a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), an access terminal device, a vehicle-mounted terminal device, an industrial control terminal device, a UE unit, a UE station, a mobile station, a remote terminal device, a mobile device, a UE terminal device, a wireless communication device, a UE agent, or a UE apparatus. The terminal device may be fixed or mobile. It should be noted that the terminal device may support at least one wireless communication technology, such as long term evolution (long term evolution, LTE), new radio, NR, etc. For example, the terminal device may be a mobile phone, a tablet, a desktop, a notebook, a kiosk, a car-mounted terminal, a Virtual Reality (VR) terminal device, an augmented reality (augmented reality, AR) terminal device, a wireless terminal in an industrial control (industrial control), a wireless terminal in a self-driving (self-driving), a wireless terminal in a teleoperation (remote medical surgery), a wireless terminal in a smart grid, a wireless terminal in a transportation security (transportation safety), a wireless terminal in a smart city, a wireless terminal in a smart home (smart home), a cellular phone, a cordless phone, a session initiation protocol (session initiation protocol, SIP) phone, a wireless local loop (wireless local loop, WLL) station, a personal digital assistant (personal digital assistant, PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a wearable device, a terminal in a future mobile communication network, or a public land mobile network (public land mobile network) in a future mobile communication network, etc. In some embodiments of the present application, the terminal device may also be a device with a transceiver function, such as a chip system. The chip system may include a chip and may also include other discrete devices.

2. A network device. The network device in the embodiment of the present application is a device that provides a wireless communication function for a terminal device, and may also be referred to as an access network device, a radio access network (radio access network, RAN) device, or the like. Wherein the network device may support at least one wireless communication technology, e.g., LTE, NR, etc. By way of example, network devices include, but are not limited to: next generation base stations (gnbs), evolved node bs (enbs), radio network controllers (radio network controller, RNCs), node bs (node bs, NB), base station controllers (base station controller, BSC), base transceiver stations (base transceiver station, BTS), home base stations (e.g., home evolved node B, or home node B, HNB), baseband units (BBUs), transceiving points (transmitting and receiving point, TRPs), transmitting points (transmitting point, TP), mobile switching centers, and the like in a fifth generation mobile communication system (5 th-generation, 5G). The network device may also be a wireless controller, a Centralized Unit (CU), and/or a Distributed Unit (DU) in the cloud wireless access network (cloud radio access network, CRAN) scenario, or the network device may be a relay station, an access point, an in-vehicle device, a terminal device, a wearable device, and a network device in future mobile communication or a network device in a future evolved PLMN, etc. In some embodiments, the network device may also be an apparatus, such as a system-on-a-chip, having functionality for providing wireless communication for the terminal device. By way of example, the chip system may include a chip, and may also include other discrete devices.

3. Air interface state

The air interface state of the UE may include three states: rrc_idle/rrc_inactive/rrc_connected.

The UE in idle state is not connected to the base station, and only needs to initiate a location update, cell selection or reselection procedure periodically, receive paging, etc. The UE in the connected state is connected to the network, and the network configures the UE radio bearer and the configuration of the physical layer. The network may schedule uplink and downlink data for the UE. The UE in the inactive state moves within a certain RAN-based notification area (RAN-based Notification Area, RNA) without notifying the base station. The UE may reserve a certain configuration, and if the network needs to schedule the UE or the UE has data to send, the network needs to migrate to a connected state, and resume the reserved configuration for performing a digital transmission. If the UE needs to initiate data transmission in a non-connection state, the UE needs to carry out random access process migration to the connection state, and at present, four-step random access and two-step random access exist.

4. Random access procedure

The following describes a four-step random access procedure with reference to fig. 1a, which may specifically include the following steps:

the first step: the UE sends Msg1 to the base station.

Specifically, the UE selects one SSB or CSI-RS from the synchronization signal and the PBCH block (Synchronization Signal and PBCH block, SSB) or CSI-RS that satisfy the conditions, then selects one preamble, and sends the random access preamble at a physical random access channel transmission opportunity (PRACH transmission occasion, or may be written as PRACH occalation, or RO for short) resource that allows initiation.

And a second step of: the base station sends Msg2 to the UE.

The UE receives a random access response, msg2, sent by the base station. Optionally, the UE receives RAR data by detecting a physical downlink control channel (Physical Downlink Control Channel, PDCCH) scrambled by a Random Access RNTI (RA-RNTI), which includes a time advance indication Timing advance command, an uplink grant, UL grant, carrying scheduling information for the UE to send Msg3. Multiple UEs will select the same RO and preamble to initiate the random access procedure, and there will be a collision, so two steps of the procedure need to be performed to resolve the collision.

And a third step of: the UE sends Msg3 to the base station.

The UE sends Msg3 using the scheduling grant received in Msg2, and for the UE in the non-connected state, an RRC CCCH message is sent, where the RRC CCCH message includes a message such as an RRC setup request, rrcsetup request, or an RRC restore request, rrcresemerequest, or rrcresemerequest 1, and part of the information carried therein is used as a UE identifier for collision resolution.

Fourth step: the base station sends Msg4 to the UE.

The UE receives the PDCCH using the TC-RNTI received by Msg3, and if it carries Contention Resolution Identity MAC CE in the received data, it considers the collision resolution to be successful if it is received.

The following describes a two-step random access procedure with reference to fig. 1b, which may specifically comprise the following steps:

the first step: the UE sends MsgA to the base station.

The MsgA includes information of Msg1 and Msg3 in a four-step random access procedure, that is, includes a preamble transmitted on a random access channel (Random Access Channel, PRACH) and a data payload portion transmitted on a physical uplink shared channel (Physical Uplink Shared Channel, PUSCH).

And a second step of: the base station sends an MsgB to the UE.

Wherein MsgB contains information in Msg2 and Msg 4. Since the inactive state inactive and idle state idle UEs need to transmit data, state transition is performed first, and the MsgA only contains RRC messages, and data needs to be transmitted after the random access procedure is completed.

5. Packet transfer (small data transmission, SDT)

When the UE has data to transmit, the UE may transmit data in an inactive state without migrating to a connected state, referred to as SDT transmission. Wherein the SDT transmissions include RA-SDT and Configured Grant (CG) SDT.

RA-SDT means that in the above-mentioned four-step or two-step random access procedure, data can be carried in Msg3 or MsgA in addition to the RRC message. CG-SDT means that if TA is valid, the preamble may not be sent: the network pre-allocates dedicated (CG) Configured grant Type resources to the UE, using which to send data.

When the base station migrates the UE to the inactive state through the RRCRelease message, some conditions allowing the SDT to be used, such as configuring a data volume threshold, and allowing the RB(s) of the SDT to be used, are configured. If CG-SDT is used, corresponding CG resources, a threshold range of RSRP change, a signal threshold used by SSB and the like are configured.

If the UE has data to send, it will determine whether SDT resources (for example, whether the data to be transmitted is allowed RB data or not, and whether the data to be transmitted meets the threshold or not) can be used, if the SDT resources cannot be used, then random access is performed using non-SDT random access resources (i.e., conventional random access resources), where the random access may be four-step random access resources or two-step random access resources. If SDT resources can be used, data can be transferred through RA-SDT or CG-SDT.

For RA-SDT, since data needs to be transmitted in Msg3 or MsgA, the base station configures special random access resources instead of using conventional random access resources. The random access resource comprises RO or preamble or PUSCH resource, wherein the allocated uplink authorized resource is larger than the uplink authorized resource allocated in the general random access process because of carrying uplink data. The base station may determine whether the UE uses RA-SDT transmission for the legacy random access resource or the special random access resource through the random access resource used by the UE to determine the allocated uplink grant resource size. Taking the four-step random access process as an illustration, if the UE uses the conventional random access resource to send the Msg1, the base station performs allocation according to the conventional uplink grant resource allocation manner when allocating the uplink grant resource for the Msg 3. If the UE uses a special random access resource to send the Msg1, when the base station allocates an uplink grant resource for the Msg3, the allocated uplink grant resource will be larger than the conventionally allocated uplink grant resource, so as to carry data of the UE in the Msg 3.

Referring to fig. 2, fig. 2 is a schematic structural diagram of a communication system according to an embodiment of the present application. The communication system may include, but is not limited to, one or more network devices, one or more terminal devices, such as, for example, one network device 101 and one terminal device 102 in fig. 2, where the network device 101 in fig. 2 is, for example, a base station, and the terminal device 102 is, for example, a mobile phone, and the terminal device 102 may establish a wireless link with the network device 101 to perform communication. The communication system shown in fig. 2 includes, but is not limited to, a network device and a terminal device, and may further include other communication devices, and the number and form of the devices shown in fig. 2 are used as examples and are not limited to the embodiments of the present application.

In the communication system as shown in fig. 2, the network device 101 may send a paging message, and the terminal device 102 sends indication information in response to the paging message, where the indication information is used to indicate a transmission mode used for data transmission.

As shown in fig. 3, a flow chart of an embodiment of a data transmission method provided in the present application, as shown in fig. 3, may include, but is not limited to, the following steps:

301, the network device sends a paging message, and correspondingly, the terminal device receives the paging message.

In one embodiment, the network device may send a paging message to the terminal device when the network device has data to send to the terminal device. Optionally, the paging message may include third indication information, where the third indication information may be used to indicate that the data transmission adopts the first transmission mode. The first transmission mode is a data transmission mode adopted when the terminal equipment is in an inactive state, or may be a mode of transmitting data when the terminal equipment is in an inactive state, or may be a packet transmission SDT. The third indication information may be an indication of the terminal termination MT (mobile terminated) EDT (early data transmission) or an indication of the MT-SDT, for example. Alternatively, the paging message may also be referred to as an enhanced paging message. It is understood that the third indication information may also be used to indicate that the terminal device does not change state for transmission, i.e. still remains in an inactive state for data transmission.

302, the terminal device responds to the paging message and sends indication information, wherein the indication information is used for indicating a transmission mode adopted by data transmission.

The terminal equipment receives the paging message sent by the network equipment, responds, and sends indication information to the network equipment, wherein the indication information is used for indicating a transmission mode adopted by data transmission. In some embodiments, in the case that the terminal device detects that the paging message includes the third indication information, the terminal device sends indication information for indicating a transmission mode adopted by the data transmission to the network device to respond to the paging message. It is understood that this transmission scheme may be applied not only to downlink data transmission but also to uplink data transmission. In some embodiments, before the terminal device sends the indication information, the terminal device may determine a transmission manner in which to transmit data. The transmission mode adopted for data transmission may include a first transmission mode or a second transmission mode. The first transmission mode refers to a data transmission mode adopted when the terminal device is in an inactive state, in other words, the terminal device may perform data transmission when the terminal device is in an inactive state, for example, the first transmission mode may be SDT transmission. The second transmission mode refers to a data transmission mode adopted when the terminal device is in a connection state, in other words, the terminal device needs to switch to the connection state for data transmission, or the terminal device needs to send a request message through a random access process and migrate to the connection state for data transmission according to a response message of the network side.

For example, the terminal device may determine the data transmission mode according to the data transmission mode indicated by the network device and/or the data to be sent to the network device by the terminal device. For example, if there is data that does not support transmission of inactive data in the data that needs to be sent to the network device by the terminal device, the terminal device may determine that the transmission mode adopted by the data transmission is the second transmission mode. For another example, the network device may instruct the terminal device to use a data transmission manner, and the terminal device determines the data transmission manner instructed by the network device as the used data transmission manner. For another example, the network device may indicate a data transmission mode to the terminal device, and the terminal device determines the data transmission mode according to whether the data to be sent to the network device supports the data transmission mode indicated by the network device.

The terminal device determines that the transmission mode adopted by the data transmission is the first transmission mode according to the indication of the network device and/or the judgment of the terminal device, but the terminal device can use the traditional random access resource to respond to the paging message due to the resource limitation. For example, if the terminal device receives a paging message sent by the network device, where the paging message includes an indication for indicating that data transmission adopts the first transmission mode, but the cell is not configured with an access resource for the first transmission mode or the terminal device does not have a suitable resource available, the paging message may be responded by using a conventional random access resource.

In some embodiments, if the terminal device determines that the transmission mode adopted by the data transmission is the first transmission mode, the terminal device responds to the paging message and sends first indication information to the network device, where the first indication information is used to indicate that the data transmission adopts the first transmission mode. If the terminal equipment determines that the transmission mode adopted by the data transmission is the second transmission mode, the terminal equipment responds to the paging message and sends second indication information to the network equipment, wherein the second indication information is used for indicating that the data transmission adopts the second transmission mode.

In an alternative embodiment, the terminal device may send, to the network device, first indication information for indicating that the data transmission adopts the first transmission mode through a message in the random access procedure, that is, the message includes the first indication information. The message may comprise an uplink message sent by the third-step terminal device in the random access procedure (Msg 3), i.e. in the four-step random access procedure, based on the scheduling of the network, or the message may comprise a message a (MsgA) in the random access procedure, i.e. the first-step physical uplink shared channel (Physical Uplink Shared Channel, PUSCH) payload in the two-step random access procedure. In one possible implementation, the terminal device may initiate the random access procedure using conventional random access resources, i.e. the terminal device responds to paging messages of the network device using conventional random access resources. It can be appreciated that conventional random access resources are relative to special random access resources. The conventional random access resource and the special random access resource are distinguished by RO resource or preamble or PUSCH resource, and reference is made to the description of the foregoing embodiments. In order to save access resources, the application initiates a random access process by adopting a traditional random access resource, and because the traditional random access resource is adopted to initiate the random access process, network equipment cannot distinguish whether terminal equipment needs to adopt a first transmission mode for data transmission or enter a connection state through the random access process, and in order to solve the problem, the application can carry first indication information in message 3 (Msg 3) or message A (Msg A), and the network equipment can determine that the terminal equipment does not request to switch to the connection state through the first indication information and adopts the first transmission mode for data transmission. By the method, special random access resources are avoided, so that transmission resources are saved, cell use without additional allocation of the special random access resources can be supported, and the use scene is enriched.

In an alternative embodiment, the terminal device may indicate the first transmission mode through a logical channel identification (Logical channel identification, LCID) field included in a MAC sub-header of a MAC control sub-header in a MAC protocol data unit (Media Access Control Protocol Data Unit, MAC PDU), that is, the first indication information is a logical channel identification field included in a MAC sub-header of the MAC PDU. Specifically, a new LCID may be added specifically to indicate that the data transmission adopts the first transmission mode. The new added LCID may be an index value of an unused LCID, as shown in the following table, index values 0 to 63 correspond to the values of LCIDs, respectively, and index values 37 to 43 are index values of the unused LCIDs, from which an index value may be selected as the new added LCID for indicating that the data transmission adopts the first transmission mode. For example, the index value 37 is used as a new LCID in the CCCH message with the length of 48 bits, and is used to indicate that the data transmission adopts the first transmission mode. For another example, the index value 38 is used as a new LCID in the CCCH message with 64-bit length, to indicate that the data transmission adopts the first transmission mode.

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In some embodiments, the terminal device may also indicate the second transmission mode through a logical channel identification field included in a MAC subheader of the MAC PDU, that is, the second indication information is a logical channel identification field included in a MAC subheader of the MAC PDU. It will be appreciated that the LCID used to indicate the first transmission scheme is different from the LCID used to indicate the second transmission scheme.

In an alternative embodiment, the terminal device may transmit a radio resource control (Radio Resource Control, RRC) message, such as; and sending a recovery request message to the network equipment, wherein the recovery request message is used for indicating that the data transmission adopts the first transmission mode, namely the recovery request message comprises the first indication information, and the recovery request message can comprise an RRCResumeRequest message or an RRCResumeRequest1 message.

In some embodiments, the terminal device may also send second indication information for indicating that the data transmission adopts the second transmission mode to the network device through the recovery request message, that is, the recovery request message includes the second indication information.

In one possible design, the data transmission may be indicated to be in the first transmission mode by recovering at least one reserved bit in the request message, e.g., setting a bit value of a certain reserved bit to 1 indicates that the data transmission is in the first transmission mode. It is understood that the second transmission mode may also be used for data transmission by reserved bits.

In another possible design, the data transmission may be indicated by the recovery reason field in the recovery request message in a first transmission manner, i.e. the first indication information is the recovery reason field in the recovery request message. For example, an unused recovery cause value may be used to indicate that the data transmission is in the first transmission mode.

If the resume request message includes an rrcrumerequest message, the fields included in the rrcrumerequest message are as follows, where resumecase is a resume reason field:

if the resume request message includes a rrcresemerequest 1 message, the fields included in the rrcresemerequest 1 message are as follows, where resumecase is a resume reason field:

the current recovery reason field may include 4 bits and can carry 16 recovery reason values as shown below, where spark is an unused recovery reason value, and the present application may select one recovery reason value from the unused recovery reason values to be used to indicate that the data transmission adopts the first transmission mode:

ResumeCause＝ENUMERATED{emergency，highPriorityAccess，mt-Access，mo-Signalling，mo-Data，mo-VoiceCall，mo-VideoCall，mo-SMS，rna-Update，mps-PriorityAccess，mcs-PriorityAccess，spare1，spare2，spare3，spare4，spare5}

in some embodiments, the data transmission may also be indicated by the recovery reason field in the recovery request message in a second transmission manner, that is, the second indication information is the recovery reason field in the recovery request message. For example, an unused recovery cause value may be used to indicate that the data transmission is in the second transmission mode. It can be understood that the restoration reason value for indicating that the data transmission adopts the first transmission mode and the second transmission mode is different.

In some optional embodiments, if the terminal device determines that the transmission mode adopted by the data transmission is the second transmission mode, that is, the data transmission needs to be performed in the connected state, the terminal device may also not perform state transition at first, that is, still in the inactive state, and perform the data transmission by adopting the first transmission mode, and instruct the data transmission to adopt the second transmission mode in an uplink message scheduled by the subsequent network device. For example, a PDCCH is monitored in a search space (such as sdt-search space) corresponding to the first transmission mode, the PDCCH message is used for scheduling resources of the terminal equipment for sending uplink messages, and the terminal equipment carries second indication information in the scheduled uplink messages, wherein the second indication information is used for indicating that the data transmission adopts the second transmission mode. The uplink message may be, for example, terminal assistance information (UE Assistance Information, UAI). The indication that "the non-SDT data arrives" in the UAI message may be used to indicate that the data transmission adopts the second transmission mode, or a "SDT transmission mode is not used" may be newly added in the UAI message to indicate that the data transmission adopts the second transmission mode, which is not limited in this application.

In the embodiment of the application, when the paging message of the network side is received, the terminal equipment responds to the paging message and sends the indication information for indicating the transmission mode adopted by the data transmission to the network side, so that the terminal equipment indicates the transmission mode adopted by the data transmission to the network equipment in the scene that the network equipment pages the terminal equipment.

Referring to fig. 4, fig. 4 is a schematic structural diagram of a communication device according to an embodiment of the present application. The device may be a terminal device, or may be a device in a terminal device, for example, may be a chip or a chip module in the terminal device, or may be a device that can be matched with a terminal device for use. The communication apparatus 400 shown in fig. 4 may include a receiving unit 401 and a transmitting unit 402. Wherein:

a receiving unit 401, configured to receive a paging message;

and a sending unit 402, configured to send, in response to the paging message, indication information, where the indication information is used to indicate a transmission mode used for data transmission.

In an alternative embodiment, the sending unit 402 is specifically configured to:

In an alternative embodiment, the apparatus further comprises:

and the monitoring unit is used for monitoring the physical downlink control channel PDCCH in the search space corresponding to the first transmission mode.

The relevant content of the embodiment can be referred to the relevant content of the method embodiment. And will not be described in detail herein.

Referring to fig. 5, fig. 5 is a schematic structural diagram of another communication device according to an embodiment of the present application. The device may be a network device, or may be a device in a network device, for example, may be a chip or a chip module in the network device, or may be a device that can be matched with a network device for use. The communication apparatus 500 shown in fig. 5 may include a transmitting unit 501 and a receiving unit 502. Wherein:

a transmitting unit 501, configured to transmit a paging message;

the receiving unit 502 is configured to receive indication information, where the indication information is used to indicate a transmission mode adopted by data transmission.

In an alternative embodiment, the receiving unit 502 is specifically configured to:

In an optional embodiment, the sending unit 501 is further configured to send a physical downlink control channel PDCCH in a search space corresponding to the first transmission mode.

Referring to fig. 6, fig. 6 is a schematic structural diagram of another communication device according to an embodiment of the present application, which is configured to implement the functions of the terminal device in fig. 3. The communication device 600 may be a terminal device or a device for a terminal device. The means for the terminal device may be a chip system or a chip within the terminal device. The chip system may be composed of a chip or may include a chip and other discrete devices.

Alternatively, the communication device 600 is configured to implement the functions of the network device in fig. 3. The communication means may be a network device or means for a network device. The means for the network device may be a system-on-chip or a chip within the network device.

The communication apparatus 600 includes at least one processor 620 configured to implement a data processing function of a terminal device or a network device in the method provided in the embodiments of the present application. The apparatus 600 may further include a communication interface 610, configured to implement a transceiving operation of a terminal device or a network device in the method provided in the embodiment of the present application. In an embodiment of the present application, the processor 620 may be a central processing unit (Central Processing Unit, CPU), which may also be other general purpose processors, digital signal processors (Digital Signal Processor, DSPs), application specific integrated circuits (Application Specific Integrated Circuit, ASICs), off-the-shelf programmable gate arrays (Field-Programmable Gate Array, FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. In the present embodiment, the communication interface 610 may be a transceiver, circuit, bus, module, or other type of communication interface for communicating with other devices over a transmission medium. For example, the communication interface 610 may be used to communicate with other devices in the communication apparatus 600. The processor 620 utilizes the communication interface 610 to transmit and receive data and is configured to implement the method described in fig. 3 in the method embodiment described above.

The communications apparatus 600 can also include at least one memory 630 for storing program instructions and/or data. Memory 630 is coupled to processor 620. The coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units, or modules, which may be in electrical, mechanical, or other forms for information interaction between the devices, units, or modules. Processor 620 may operate in conjunction with memory 630. Processor 620 may execute program instructions stored in memory 630. At least one of the at least one memory may be included in the processor.

When the communication device 600 is powered on, the processor 620 may read the software program in the memory 630, interpret and execute instructions of the software program, and process data of the software program. When data needs to be transmitted wirelessly, the processor 620 performs baseband processing on the data to be transmitted, and outputs a baseband signal to a radio frequency circuit (not shown), and the radio frequency circuit performs radio frequency processing on the baseband signal and then transmits the radio frequency signal to the outside in the form of electromagnetic waves through an antenna. When data is transmitted to the apparatus 600, the radio frequency circuit receives a radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor 620, and the processor 620 converts the baseband signal into data and processes the data.

In another implementation, the rf circuitry and antenna may be provided separately from the baseband processing processor 620, for example, in a distributed scenario, the rf circuitry and antenna may be remotely located from the communication device.

The specific connection medium between the communication interface 610, the processor 620, and the memory 630 is not limited in the embodiments of the present application. In the embodiment of the present application, the memory 630, the processor 620 and the communication interface 610 are connected by a bus 640 in fig. 6, where the bus is indicated by a thick line in fig. 6, and the connection manner between other components is only schematically illustrated, and is not limited thereto. The buses may be classified as address buses, data buses, control buses, etc. For ease of illustration, only one thick line is shown in fig. 6, but not only one bus or one type of bus.

When the communication apparatus 600 is specifically used for a terminal device, for example, when the communication apparatus 600 is specifically a chip or a chip system, the baseband signal may be output or received by the communication interface 610. When the communication apparatus 600 is a terminal device, the radio frequency signal may be output or received by the communication interface 610.

It should be noted that, the communication device may execute the steps related to the terminal device or the network device in the foregoing method embodiment, and the implementation manner provided by each step may be referred to specifically, which is not described herein again.

For each device, product, or application to or integrated with a communication device, each module included in the device may be implemented by hardware such as a circuit, and different modules may be located in the same component (for example, a chip, a circuit module, or the like) or in different components in the terminal, or at least some modules may be implemented by using a software program, where the software program runs on a processor integrated in the terminal, and the remaining (if any) some modules may be implemented by hardware such as a circuit.

The memory may be 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 Programmable ROM (EPROM), an electrically erasable programmable ROM (electrically EPROM, EEPROM), or a flash memory, among others. The volatile memory may be random access memory (random access memory, RAM) which acts as an external cache. By way of example but not limitation, many forms of random access memory (random access memory, RAM) are available, such as Static RAM (SRAM), dynamic RAM (dynamic random access memory, DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and direct memory bus RAM (DR RAM).

The embodiment of the application provides a chip. The chip comprises: a processor and a memory. Wherein the number of processors may be one or more and the number of memories may be one or more. The processor may perform the data transmission method shown in fig. 3 and the steps performed by the related embodiments by reading the instructions and data stored in the memory.

As shown in fig. 7, fig. 7 is a schematic structural diagram of a module device according to an embodiment of the present application. The module device 700 may perform the steps related to the terminal device or the network device in the foregoing method embodiment, where the module device 700 includes: a communication module 701, a power module 702, a memory module 703 and a chip module 704. Wherein the power module 702 is configured to provide power to the module device; the storage module 703 is used for storing data and/or instructions; the communication module 701 is used for communicating with external equipment; the chip module 704 is configured to invoke the data and/or instructions stored in the memory module 703, and in combination with the communication module 701, can perform the data transmission method as shown in fig. 3 and the steps performed by the related embodiments.

A computer-readable storage medium is also provided in an embodiment of the present application. The computer readable storage medium stores a computer program, where the computer program includes program instructions that, when executed by an electronic device, implement steps performed by a terminal device in the data transmission method shown in fig. 3 or implement steps performed by a network device in the data transmission method shown in fig. 3.

The computer readable storage medium may be an internal storage unit of the terminal device or the network device according to any of the foregoing embodiments, for example, a hard disk or a memory of the device. The computer readable storage medium may also be an external storage device of the terminal device or network device, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) card, a flash card (flash card) or the like, which are provided on the device. Further, the computer-readable storage medium may also include both an internal storage unit of the terminal device or the network device and an external storage device. The computer-readable storage medium is used to store the computer program and other programs and data required by the terminal device or network device. The computer-readable storage medium may also be used to temporarily store data that has been output or is to be output. The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more sets of available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., high-density digital video disc (digital video disc, DVD)), or a semiconductor medium. The semiconductor medium may be a solid state disk.

With respect to each of the apparatuses and each of the modules/units included in the products described in the above embodiments, it may be a software module/unit, a hardware module/unit, or a software module/unit, and a hardware module/unit. For example, for each device or product applied to or integrated on a chip, each module/unit included in the device or product may be implemented in hardware such as a circuit, or at least part of the modules/units may be implemented in software program, where the software program runs on a processor integrated inside the chip, and the rest (if any) of the modules/units may be implemented in hardware such as a circuit; for each device and product applied to or integrated in the chip module, each module/unit contained in the device and product can be realized in a hardware manner such as a circuit, different modules/units can be located in the same component (such as a chip, a circuit module and the like) or different components of the chip module, or at least part of the modules/units can be realized in a software program, the software program runs on a processor integrated in the chip module, and the rest (if any) of the modules/units can be realized in a hardware manner such as a circuit; for each device and product applied to or integrated in the data acquisition node, each module/unit contained in each device and product may be implemented in hardware such as a circuit, and different modules/units may be located in the same component (for example, a chip, a circuit module, etc.) or different components in the terminal, or at least part of the modules/units may be implemented in a software program, where the software program runs on a processor integrated in the data acquisition node, and the rest (if any) of the modules/units may be implemented in hardware such as a circuit.

The above embodiments may be implemented in whole or in part by software, hardware, firmware, or any other combination. When implemented in software, the above-described embodiments may be implemented in whole or in part in the form of a computer program product. The computer program product comprises one or more computer instructions or computer programs. When the computer instructions or computer program are loaded or executed on a computer, the processes or functions described in accordance with the embodiments of the present application are all or partially produced. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website site, computer, server, or data center to another website site, computer, server, or data center by wired or wireless means.

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

In the several embodiments provided in the present application, it should be understood that the disclosed method, apparatus, and system may be implemented in other manners. For example, the device embodiments described above are merely illustrative; for example, the division of the units is only one logic function division, and other division modes can be adopted in actual implementation; for example, multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

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

In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may be physically included separately, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in hardware plus software functional units.

The integrated units implemented in the form of software functional units described above may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a gateway node, etc.) to perform part of the steps of the method according to the embodiments of the present invention.

Those skilled in the art will appreciate that implementing all or part of the above-described methods in accordance with the embodiments may be accomplished by way of a computer program stored on a computer readable storage medium, which when executed may comprise the steps of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), or the like.

The foregoing disclosure is only a preferred embodiment of the present application, and it is not intended to limit the scope of the claims, and one of ordinary skill in the art will understand that all or part of the processes for implementing the embodiments described above may be performed with equivalent changes in the claims of the present application and still fall within the scope of the claims.

Claims

1. A data transmission method, comprising:

receiving a paging message;

2. The method of claim 1, wherein said transmitting an indication in response to said paging message comprises:

3. The method of claim 2, wherein the transmitting the first indication information comprises:

4. The method of claim 2, wherein the transmitting the first indication information comprises:

5. The method of claim 2, wherein the transmitting the first indication information comprises:

6. The method of claim 2, wherein the transmitting the first indication information comprises:

7. The method of claim 1, wherein said transmitting an indication in response to said paging message comprises:

8. The method of claim 7, wherein prior to transmitting the second indication information, further comprising:

9. A data transmission method, comprising:

Sending a paging message;

10. The method of claim 9, wherein the receiving the indication information comprises:

11. The method of claim 10, wherein the receiving the first indication information comprises:

12. The method of claim 10, wherein the receiving the first indication information comprises:

13. The method of claim 10, wherein the receiving the first indication information comprises:

14. The method of claim 10, wherein the receiving the first indication information comprises:

15. The method of claim 9, wherein the receiving the indication information comprises:

16. The method of claim 15, wherein prior to receiving the second indication information, further comprising:

17. A communication device, comprising:

a receiving unit for receiving a paging message;

and the sending unit is used for responding to the paging message and sending indication information, wherein the indication information is used for indicating a transmission mode adopted by data transmission.

18. A communication device, comprising:

a transmitting unit for transmitting a paging message;

the receiving unit is used for receiving the indication information, and the indication information is used for indicating a transmission mode adopted by data transmission.

19. A communication device comprising a processor and a memory, the processor and the memory being interconnected, wherein the memory is adapted to store a computer program, the computer program comprising program instructions, the processor invoking the program instructions to perform the method according to any of claims 1-8 or to perform the method according to any of claims 9-16.

20. A chip comprising a processor and an interface, the processor and the interface coupled; the interface is for receiving or outputting signals, the processor is for executing code instructions, performing the method of any of claims 1 to 8, or performing the method of any of claims 9 to 16.

21. The utility model provides a module equipment, its characterized in that, module equipment includes communication module, power module, storage module and chip module, wherein:

The power supply module is used for providing electric energy for the module equipment;

the storage module is used for storing data and/or instructions;

the communication module is used for communicating with external equipment;

the chip module is configured to invoke the data and/or instructions stored by the storage module, and in combination with the communication module, perform the method according to any of claims 1 to 8, or perform the method according to any of claims 9 to 16.

22. A computer readable storage medium, characterized in that the computer readable storage medium stores a computer program comprising program instructions which, when executed by an electronic device, implement the method of any one of claims 1 to 8 or the method of any one of claims 9 to 16.