WO2024017355A1

WO2024017355A1 - Data transmission method and communication apparatus

Info

Publication number: WO2024017355A1
Application number: PCT/CN2023/108472
Authority: WO
Inventors: 徐敏
Original assignee: 展讯通信（上海）有限公司
Priority date: 2022-07-22
Filing date: 2023-07-20
Publication date: 2024-01-25
Also published as: CN117479301A

Abstract

The present application provides a data transmission method and a communication apparatus. The data transmission method comprises: receiving a paging message; and sending indication information in response to the paging message, wherein the indication information is used for indicating a transmission mode used by data transmission. By using the present application, in the scenario of paging a terminal device by a network device, the terminal device indicating to the network device the transmission mode used by data transmission can be achieved.

Description

Data transmission method and communication device

Technical field

The present application relates to the field of communication technology, and in particular, to a data transmission method and communication device.

Background technique

In a wireless communication system, if a terminal device has data that needs to be sent to the network side, the terminal device can determine a transmission method for transmitting the data based on whether the data satisfies preset conditions. For example, if the amount of data to be transmitted is less than a certain threshold, it can be determined to use Small Data Transmission (SDT) for data transmission. When the network device has data to be sent to the terminal device, the network device can page the terminal device and allow the terminal device to switch from the non-connected state to the connected state for communication, and the selection of the transmission method cannot be realized.

Contents of the invention

Embodiments of the present application provide a data transmission method and a communication device, which can enable the terminal device to indicate the transmission mode used for data transmission to the network device in a scenario where a network device paging a terminal device.

In a first aspect, embodiments of the present application provide a data transmission method, which method includes:

receive paging messages;

In response to the paging message, indication information is sent, where the indication information is used to indicate the transmission mode used for data transmission.

Based on the description of the first aspect, when receiving a paging message from the network side, the terminal device responds to the paging message and sends indication information to the network side for indicating the transmission mode used for data transmission, so that the network device paging In the scenario of terminal equipment, the terminal equipment indicates the transmission method used for data transmission to the network equipment.

In an optional implementation, the sending of indication information in response to the paging message includes:

In response to the paging message, first indication information is sent, and the first indication information is used to instruct data transmission to adopt a first transmission mode, and the first transmission mode is a data transmission mode used when it is in an inactive state.

In this way, it is convenient for the network side to determine the first transmission mode used when the terminal device is in an inactive state.

In an optional implementation, sending the first indication information includes:

Send a first message, where the first message includes the first indication information, and the first message is message 3 or message A in the random access process.

In this way, the random access message in the random access process is used to indicate the first transmission mode of data transmission, which not only facilitates the network side to determine the first data transmission mode used for data transmission, but is also compatible with existing messages and saves transmission. resources, applicable to a wide range of scenarios.

Send the media access control protocol data unit MAC PDU. The MAC PDU includes the media access control subheader MAC subheader. The MAC subheader includes a logical channel identification field. The logical channel identification field is used to indicate that the first transmission is used for data transmission. Way.

In this way, the first transmission mode used for data transmission can be indicated through the logical channel identification field, which is compatible with existing fields.

Send a second message, where the second message includes the first indication information, the second message is a recovery request message, and the first indication information is the recovery reason field included in the second message.

In this way, the first transmission mode used for data transmission can be indicated through the recovery reason field in the recovery request message, which is compatible with existing fields.

Send a second message, where the second message includes the first indication information, and the second message is a recovery request message.

In this way, the recovery request message carries the first indication information, thereby avoiding sending additional messages for indication and saving transmission resources.

In response to the paging message, second indication information is sent, and the second indication information is used to instruct data transmission to adopt a second transmission mode, and the second transmission mode is the data transmission mode used when it is in the connected state.

In this way, the terminal device can also indicate to the network side the second transmission method used for data transmission, thereby adapting to various application scenarios.

In an alternative implementation,

Before sending the second instruction information, the method further includes:

Monitor the physical downlink control channel PDCCH in the search space corresponding to the first transmission mode.

In this way, the terminal device can first keep transmitting data in the first transmission mode, and then notify the network side to use the second transmission mode, which can avoid data packet loss.

In the second aspect, embodiments of the present application provide a data transmission method, which includes:

Send paging message;

Receive indication information, where the indication information is used to indicate the transmission mode used for data transmission.

In an optional implementation, the reception indication information includes:

Receive first indication information, the first indication information is used to indicate that data transmission adopts a first transmission mode, and the first The transmission method is the data transmission method used when it is in the inactive state.

In an optional implementation, receiving the first indication information includes:

Receive a first message, where the first message includes the first indication information, and the first message is message 3 or message A in the random access process.

Receive the media access control protocol data unit MAC PDU. The MAC PDU includes a media access control subheader MAC subheader. The MAC subheader includes a logical channel identification field. The logical channel identification field is used to indicate that the first transmission is used for data transmission. Way.

A second message is received, the second message includes the first indication information, the second message is a recovery request message, and the first indication information is the recovery reason field included in the second message.

A second message is received, the second message includes the first indication information, and the second message is a recovery request message.

In an optional implementation, the reception indication information includes:

Receive second indication information, the second indication information is used to instruct data transmission to adopt a second transmission mode, and the second transmission mode is the data transmission mode used when it is in the connected state.

In an alternative implementation,

Before receiving the second indication information, the method further includes:

The physical downlink control channel PDCCH is sent in the search space corresponding to the first transmission mode.

In a third aspect, embodiments of the present application provide a communication device, which includes a unit for implementing the method in any possible implementation manner of the first aspect and the second aspect.

In a fourth aspect, embodiments of the present application provide a communication device. The communication device includes a processor and a memory. The processor and the memory are connected to each other. The memory is used to store a computer program. The computer program includes program instructions. The processor is configured to The program instructions are called to perform the method described in the first aspect or any optional implementation manner of the first aspect, or to perform the method described in the second aspect or any optional implementation manner of the second aspect.

In a fifth aspect, embodiments of the present application provide a chip, which includes a processor and an interface, the processor and the interface are coupled; the interface is used to receive or output signals, and the processor is used to execute code instructions to execute the first aspect or the third aspect. The method described in any optional implementation of the first aspect, or the method described in the second aspect or any optional implementation of the second aspect is performed.

In a sixth aspect, embodiments of the present application provide a module device, characterized in that the module device includes a communication module, Power module, storage module and chip module, wherein: the power module is used to provide power for the module device; the storage module is used to store data and/or instructions; the communication module communicates with external devices; The chip module is used to call the data and/or instructions stored in the storage module, combined with the communication module, to perform the method described in the first aspect or any optional implementation manner of the first aspect, or to perform the method described in the second aspect. The method described in any optional embodiment of the aspect or the second aspect.

In a seventh aspect, embodiments of the present application provide a computer-readable storage medium. The computer-readable storage medium stores a computer program. The computer program includes program instructions. When the electronic device executes the program instructions, to implement the following: The method described in the first aspect or any optional implementation of the first aspect, or the method described in the second aspect or any optional implementation of the second aspect is performed.

Description of drawings

Figure 1a is a schematic diagram of a four-step random access process provided by an embodiment of the present application;

Figure 1b is a schematic diagram of a two-step random access process provided by an embodiment of the present application;

Figure 2 is a schematic structural diagram of a communication system provided by an embodiment of the present application;

Figure 3 is a schematic flow chart of a data transmission method provided by an embodiment of the present application;

Figure 4 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

Figure 5 is a schematic structural diagram of another communication device provided by an embodiment of the present application;

Figure 6 is a schematic structural diagram of yet another communication device provided by an embodiment of the present application;

Figure 7 is a schematic structural diagram of a module device provided by an embodiment of the present application.

Detailed ways

In the embodiment of this application, unless otherwise specified, the character "/" indicates that the related objects are an or relationship. For example, A/B can mean A or B. "And/or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and/or B can mean: A exists alone, A and B exist simultaneously, and B exists alone.

It should be pointed out that the words "first", "second" and other words involved in the embodiments of this application are only used for differentiation and description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the indicated technical features. The quantities are not to be construed as indicating or implying an order.

In the embodiments of this application, "at least one" refers to one or more, and "multiple" refers to two or more. In addition, "at least one of the following" or similar expressions thereof refers to any combination of these items, which may include any combination of a single item (items) or a plurality of items (items). For example, at least one item (item) of A, B or C can represent: A, B, C, A and B, A and C, B and C, or A, B and C. Among them, each of A, B, and C can itself be an element or So is a collection containing one or more elements.

In the embodiments of this application, "exemplary", "in some embodiments", "in another embodiment", etc. are used to express examples, illustrations or explanations. Any embodiment or design described herein as "example" is not intended to be construed as preferred or advantageous over other embodiments or designs. Rather, the use of the word example is intended to present a concept in a concrete way.

In the embodiments of this application, "of", "corresponding, relevant" and "corresponding" can sometimes be used interchangeably. It should be pointed out that when the difference is not emphasized, the meaning to be expressed is are consistent. In the embodiments of this application, communication and transmission can sometimes be used interchangeably. It should be noted that when the difference is not emphasized, the meanings expressed are consistent. For example, transmission can include sending and/or receiving, and can be a noun or a verb.

The equals involved in the embodiments of this application can be used in conjunction with greater than, and are applicable to the technical solution adopted when it is greater than, and can also be used in conjunction with less than, and are applicable to the technical solution adopted when it is less than. It should be noted that when equal is used with greater than, it cannot be used with less than; when equal to is used with less than, it is not used with greater than.

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

1. Terminal equipment. In the embodiment of the present application, the terminal device is a device with wireless transceiver function, which can be called a terminal (terminal), user equipment (UE), mobile station (MS), or mobile terminal (mobile terminal). MT), access terminal equipment, vehicle-mounted terminal equipment, industrial control terminal equipment, UE unit, UE station, mobile station, remote station, remote terminal equipment, mobile equipment, UE terminal equipment, wireless communication equipment, UE agent or UE device, etc. . Terminal equipment can 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 (new radio, NR), etc. For example, the terminal device may be a mobile phone (mobile phone), tablet computer (pad), desktop computer, notebook computer, all-in-one computer, vehicle-mounted terminal, virtual reality (VR) terminal device, augmented reality (AR) terminal Equipment, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grid, transportation security Wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless Wireless local loop (WLL) station, personal digital assistant (PDA), handheld device with wireless communication capabilities, computing device or other processing device connected to a wireless modem, wearable device, future mobile communications Terminal equipment in the network or terminal equipment in the public land mobile network (PLMN) that will evolve in the future, etc. In some embodiments of the present application, the terminal device may also be a device with transceiver functions, such as a chip system. Among them, the chip system may include chips and may also include other discrete devices.

2. Network equipment. In the embodiment of this application, the network device is a device that provides wireless communication functions for terminal devices, and may also be called access network equipment, radio access network (radio access network, RAN) equipment, etc. Among them, the network device can support at least one wireless communication technology, such as LTE, NR, etc. Examples of network equipment include but are not limited to: next generation base station (generation nodeB, gNB), evolved node B (evolved node B, eNB), wireless network control in the fifth generation mobile communication system (5th-generation, 5G) Radio network controller (RNC), node B (NB), base station controller (BSC), base transceiver station (BTS), home base station (e.g., home evolved node B, Or home node B, HNB), baseband unit (baseband unit, BBU), transceiving point (transmitting and receiving point, TRP), transmitting point (transmitting point, TP), mobile switching center, etc. The network device can also be a wireless controller, a centralized unit (CU), and/or a distributed unit (DU) in a cloud radio access network (CRAN) scenario, or the network device can They are relay stations, access points, vehicle-mounted equipment, terminal equipment, wearable devices, and network equipment in future mobile communications or network equipment in future evolved PLMNs. In some embodiments, the network device may also be a device with a wireless communication function for the terminal device, such as a chip system. For example, the chip system may include a chip, and may also include other discrete devices.

3. Air interface status

The air interface state of the UE can include three states: RRC_IDLE (idle state)/RRC_INACTIVE (inactive state)/RRC_CONNECTED (connected state).

Among them, the UE in the idle state has no connection with the base station and only needs to regularly initiate location update, cell selection or reselection process, and receive paging. The UE in the connected state is connected to the network, and the network will configure the UE radio bearer and physical layer configurations. The network can schedule uplink and downlink data for the UE. A UE in an inactive state moves within a certain RAN-based Notification Area (RNA) without notifying the base station. The UE will retain certain configurations. If the network needs to schedule the UE or the UE has data to send, it needs to migrate to the connected state and restore the retained configuration for data transmission. If the UE needs to initiate data transmission in the non-connected state, it needs to perform a random access process to migrate to the connected state. Currently, there are four-step random access and two-step random access.

4. Random access process

The following describes the four-step random access process in conjunction with Figure 1a, which may include the following steps:

Step 1: UE sends Msg1 to the base station.

Specifically optionally, the UE selects an SSB or CSI-RS from the Synchronization Signal and PBCH block (SSB) or CSI-RS that meets the conditions, and then selects a preamble preamble. After the physical randomization is allowed to be initiated, Access channel transmission occasion (PRACH transmission occasion, also can be written as PRACH occasion, Referred to as RO) resource to send random access preamble.

Step 2: The base station sends Msg2 to the UE.

The UE receives the random access response sent by the base station, namely Msg2. Optionally, the UE receives RAR data by detecting the physical downlink control channel (PDCCH) scrambled by random access RNTI (Random Access-RNTI, RA-RNTI), which contains the timing advance command, Uplink grant UL grant, the uplink grant carries the scheduling information of Msg3 sent by the UE. Multiple UEs will choose the same RO and preamble to initiate the random access process, and there will be conflicts, so the last two steps need to be performed to resolve conflicts.

Step 3: The UE sends Msg3 to the base station.

The UE uses the scheduling authorization received in Msg2 to send Msg3. For non-connected UEs, it will send the RRC CCCH message, which includes the RRC establishment request RRC SetupRequest or the RRC recovery request RRC ResumeRequest or RRC ResumeRequest1 and other messages, and part of the information carried in it is used as the UE identifier. Used for conflict resolution.

Step 4: The base station sends Msg4 to the UE.

The UE uses the TC-RNTI received in Msg3 to receive the PDCCH. If the received data carries the Contention Resolution Identity MAC CE, it is considered that the conflict resolution is successful.

The two-step random access process is described below in conjunction with Figure 1b, which may include the following steps:

Step 1: The UE sends MsgA to the base station.

Among them, MsgA contains the information of Msg1 and Msg3 in the four-step random access process, which is included in the preamble sent on the random access channel (Random Access Channel, PRACH) and the physical uplink shared channel (Physical Uplink Shared Channel, PUSCH) The data payload part sent.

Step 2: The base station sends MsgB to the UE.

Among them, MsgB contains the information in Msg2 and Msg4. Since inactive and idle UEs need to send data, they must first perform state transition. MsgA only contains RRC messages, and data cannot be sent until the random access process is completed.

5. Small data transmission (SDT)

When the UE has data to send, the UE can send data in the inactive state without moving to the connected state, which is called SDT transmission. Among them, SDT transmission includes RA-SDT and configuration authorization (CG) Configured grant-SDT.

RA-SDT means that in the four-step or two-step random access process mentioned above, in addition to sending RRC messages, Msg3 or MsgA can also carry data data. CG-SDT means that if the TA is valid, the preamble does not need to be sent: the network allocates dedicated (CG) Configured grant Type 1 resources to the UE and uses this resource to send data.

When the base station migrates the UE to the inactive state through the RRCRelease message, it will configure some conditions that allow the use of SDT. Software, such as configuring the data volume threshold, allows the use of SDT's RB(s). If CG-SDT is used, the corresponding CG resources, RSRP change threshold range, signal threshold used by SSB, etc. will be configured.

If the UE has data to send, it will determine whether SDT resources can be used (for example, whether the data to be transmitted is allowed RB data, and whether the amount of data to be transmitted meets the threshold). If SDT resources cannot be used, non-SDT random resources will be used. Access resources (that is, traditional random access resources) are used for random access, which can be four-step random access resources or two-step random access resources. If SDT resources can be used, data can be transmitted through RA-SDT or CG-SDT.

For RA-SDT, since data needs to be sent in Msg3 or MsgA, the base station will configure special random access resources instead of using traditional random access resources. Random access resources include RO or preamble or PUSCH resources. Due to the need to carry uplink data, the allocated uplink grant resources are larger than those allocated in the general random access process. The base station can determine whether the UE uses RA-SDT transmission through the random access resources used by the UE, which are traditional random access resources or special random access resources, to determine the allocated uplink grant resource size. Taking the four-step random access process as an example, if the UE uses traditional random access resources to send Msg1, the base station will refer to the traditional uplink authorization resource allocation method when allocating uplink authorization resources to Msg3. If the UE uses special random access resources to send Msg1, when the base station allocates uplink grant resources to Msg3, the allocated uplink grant resources will be larger than the traditionally allocated uplink grant resources to facilitate carrying the UE's data in Msg3.

Please refer to Figure 2. Figure 2 is a schematic structural diagram of a communication system provided by an embodiment of the present application. The communication system may include but is not limited to one or more network devices and one or more terminal devices. As shown in Figure 2, a network device 101 and a terminal device 102 are taken as an example. The network device 101 in Figure 2 is a base station. For example, the terminal device 102 takes a mobile phone as an example. The terminal device 102 can establish a wireless link with the network device 101 to communicate. The communication system shown in Figure 2 includes but is not limited to network equipment and terminal equipment, and may also include other communication equipment. The number and form of equipment shown in Figure 2 are only examples and do not constitute a limitation on the embodiments of the present application.

In the communication system shown in Figure 2, the network device 101 can send a paging message, and the terminal device 102 responds to the paging message and sends indication information. The indication information is used to indicate the transmission mode used for data transmission.

As shown in Figure 3, it is a schematic flow chart of an embodiment of the data transmission method provided by this application. As shown in Figure 3, the method may include but is not limited to the following steps:

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

In one embodiment, when the network device has data to be sent to the terminal device, the network device may send a paging message to the terminal device. Optionally, the paging message may include third indication information, and the third indication information may be The first transmission method is used for instruction data transmission. The first transmission method is a data transmission method used when the terminal device is in an inactive state, or it can be a method in which the terminal device performs data transmission when it is in an inactive state, or it can be small packet transmission SDT. For example, the third indication information may be an indication that the terminal terminates MT (mobile terminated) EDT (early data transmission), or may be an indication of MT-SDT. Optionally, the paging message may also be called an enhanced paging message. It can be understood that the third indication information may also be used to instruct the terminal device not to transfer to a state for data transmission, that is, to remain in an inactive state for data transmission.

302. The terminal device responds to the paging message and sends indication information. The indication information is used to indicate the transmission mode used for data transmission.

The terminal device receives the paging message sent by the network device, responds, and sends indication information to the network device. The indication information is used to indicate the transmission mode used for data transmission. In some embodiments, when the terminal device detects that the paging message includes the above-mentioned third indication information, the terminal device responds to the paging message by sending indication information indicating the transmission mode used for data transmission to the network device. It can be understood that this transmission method may be applicable 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 the transmission mode used for data transmission. The transmission method used for data transmission may include a first transmission method or a second transmission method. The first transmission method refers to the data transmission method used when the terminal device is in the inactive state. In other words, the terminal device can perform data transmission when it is in the inactive state. For example, the first transmission method can be SDT transmission. The second transmission method refers to the data transmission method used when the terminal device is in the connected state. In other words, the terminal device needs to switch to the connected state for data transmission, or the terminal device needs to send a request message through a random access process and perform data transmission according to the network side. The response message is migrated to the connection state for data transmission.

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 by the terminal device to the network device. For example, if the data that the terminal device needs to send to the network device contains data that does not support inactive data transmission, the terminal device may determine that the transmission method used for data transmission is the second transmission method. For another example, the network device may indicate the data transmission mode used by the terminal device, and the terminal device determines the data transmission mode indicated by the network device as the data transmission mode used. For another example, the network device can indicate a data transmission mode to the terminal device, and the terminal device determines the data transmission mode based on whether the data to be sent to the network device supports the data transmission mode indicated by the network device.

For example, the terminal device determines that the transmission mode used for data transmission is the first transmission mode according to the instructions of the network device and/or the terminal device's own judgment. However, due to resource limitations, the terminal device can use traditional random access resources to respond. Paging message. For example, the terminal device receives a paging message sent by the network device, which contains an instruction indicating that data transmission uses the first transmission mode, but the cell does not configure access resources for the first transmission mode or the terminal device does not match the paging message. If appropriate resources are available, traditional random access resources can be used to respond to the paging message.

In some embodiments, if the terminal device determines that the transmission mode used for data transmission is the first transmission mode, the terminal device responds to the paging message and sends first indication information to the network device. The first indication information is used to indicate that the data transmission mode is used. The first transmission method. If the terminal device determines that the transmission mode used for data transmission is the second transmission mode, the terminal device responds to the paging message and sends second indication information to the network device. The second indication information is used to instruct the data transmission to use the second transmission mode.

In an optional implementation, the terminal device may send the first indication information to the network device through a message in the random access process for instructing the data transmission to adopt the first transmission mode, that is, the message includes the first indication information. The message may include (Msg3) in the random access process, that is, the uplink message sent by the terminal device based on network scheduling in the third step of the four-step random access process, or the message may include message A in the random access process. (MsgA), which can be the first step of the two-step random access process, the Physical Uplink Shared Channel (PUSCH) payload. In a possible implementation manner, the terminal device can use traditional random access resources to initiate the random access process, that is, the terminal device uses traditional random access resources to respond to the paging message of the network device. It can be understood that traditional random access resources are relative to special random access resources. Traditional random access resources and special random access resources are distinguished by RO resources or preamble or PUSCH resources. For details, please refer to the description of the foregoing embodiments. In order to save access resources, this application uses traditional random access resources to initiate the random access process. Since traditional random access resources are used to initiate the random access process, the network device cannot distinguish whether the terminal device needs to use the first transmission mode. Data transmission, or entering the connected state through the random access process. To solve this problem, this application can carry the first indication information in message 3 (Msg3) or message A (MsgA), and the network device can use the first indication information It is determined that the terminal device does not request to switch to the connected state, but uses the first transmission mode for data transmission. In this way, the use of special random access resources is avoided, thereby saving transmission resources, and it can support the use of cells without additional special random access resources, enriching usage scenarios.

In an optional implementation, the terminal device can use the logical channel identifier (Logical channel identifier) contained in the MAC subheader in the Media Access Control Protocol Data Unit (MAC PDU) to channel identification (LCID) field to indicate the first transmission mode, that is, the first indication information is the logical channel identification field included in the MAC subheader of the MAC PDU. Specifically and optionally, a new LCID can be added specifically to indicate that the first transmission method is used for data transmission. The newly added LCID can be the index value of an unused LCID, as shown in the table below. The index values 0-63 correspond to the LCID values, and the index values 37-43 are the index values of the unused LCID. An index value can be selected from it as a newly added LCID to indicate that the first transmission method is used for data transmission. For example, the index value 37 is used as a newly added LCID in the 48-bit length CCCH message to indicate that the first transmission mode is used for data transmission. For another example, the index value 38 is used as a CCCH message with a length of 64 bits. A new LCID is added to indicate that data transmission uses the first transmission method.

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

In an optional implementation, the terminal device may send a first indication to the network device to indicate that the data transmission adopts the first transmission mode through a Radio Resource Control (RRC) message, such as a recovery request message. The information, that is, the recovery request message includes the first indication information, where the recovery request message may include the RRCResumeRequest message or the RRCResumeRequest1 message.

In some implementations, the terminal device may also send second indication information to the network device through a recovery request message for instructing the data transmission to adopt the second transmission mode, that is, the recovery request message includes the second indication information.

In a possible design, at least one reserved bit in the recovery request message can be used to indicate that the data transmission adopts the first transmission mode. For example, setting the bit value of a certain reserved bit to 1 indicates that the data transmission adopts the first transmission mode. Way. It is understandable that the reserved bit may also be used to indicate that the data transmission adopts the second transmission mode.

In another possible design, the data transmission may be instructed to adopt the first transmission mode through the recovery reason field in the recovery request message, that is, the first indication information is the recovery reason field in the recovery request message. For example, an unused recovery reason value can be used to indicate that data transmission adopts the first transmission mode.

If the recovery request message includes the RRCResumeRequest message, the fields contained in the RRCResumeRequest message are as follows, where ResumeCause is the recovery reason field:

If the recovery request message includes the RRCResumeRequest1 message, the fields contained in the RRCResumeRequest1 message are as follows, where ResumeCause is the recovery reason field:

Currently, the recovery reason field can include 4 bits and can carry 16 recovery reason values as shown below, where spare is an unused recovery reason value. This application can select a recovery reason value from unused recovery reason values to indicate data. The transmission adopts the first transmission method:

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 implementations, the data transmission may also be instructed to adopt the second transmission mode through the recovery reason field in the recovery request message, that is, the second indication information is the recovery reason field in the recovery request message. For example, an unused recovery reason value can be used to indicate that data transmission adopts the second transmission mode. It can be understood that the recovery reason values used to indicate that data transmission adopts the first transmission mode and the second transmission mode are different.

In some optional implementations, if the terminal device determines that the transmission mode used for data transmission is the second transmission mode, that is, data transmission needs to be performed in the connected state, the terminal device may not perform state transition first, that is, it is still inactive. state, and adopts the first transmission mode for data transmission, and indicates in the subsequent uplink message scheduled by the network device that the data transmission adopts the second transmission mode. For example, the PDCCH is monitored in the search space (such as sdt-searchspace) corresponding to the first transmission mode. The PDCCH message is used to schedule resources for the terminal device to send uplink messages. The terminal device carries the second indication information in the scheduled uplink message. , the second indication information is used to indicate that data transmission adopts the second transmission method. For example, the uplink message may be terminal assistance information (UE Assistance Information, UAI). The indication of "non-SDT data arriving" in the UAI message can be used to indicate that data transmission uses the second transmission method, or a "no SDT transmission method" can be added to the UAI message to indicate that data transmission uses the third transmission method. The second transmission method is not limited by this application.

In the embodiment of the present application, when receiving a paging message from the network side, the terminal device responds to the paging message and sends indication information to the network side to indicate the transmission mode used for data transmission, so that the network device paging the terminal In the device scenario, the terminal device indicates the transmission method used for data transmission to the network device.

Please refer to Figure 4. Figure 4 is a schematic structural diagram of a communication device provided by an embodiment of the present application. The device may be a terminal device, or a device in the terminal device, for example, it may be a chip or chip module in the terminal device, or It is a device that can be used in conjunction with terminal equipment. The communication device 400 shown in FIG. 4 may include a receiving unit 401 and a sending unit 402. in:

Receiving unit 401, used to receive paging messages;

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

In an optional implementation, the sending unit 402 is specifically used to:

In response to the paging message, second indication information is sent, and the second indication information is used to instruct data transmission to adopt a second transmission mode, and the second transmission mode is the data transmission mode used when in the connected state.

In an optional implementation, the device further includes:

The monitoring unit is configured to monitor the physical downlink control channel PDCCH in the search space corresponding to the first transmission mode.

For the relevant content of this implementation mode, please refer to the relevant content of the above method embodiment. No further details will be given here.

Please refer to FIG. 5 , which is a schematic structural diagram of another communication device provided by an embodiment of the present application. The device may be a network device or a device in the network device. For example, it may be a chip or chip module in the network device, or a device that can be used in conjunction with the network device. The communication device 500 shown in Figure 5 may include a sending unit 501 and an interface Collection unit 502. in:

Sending unit 501, used to send paging messages;

The receiving unit 502 is configured to receive indication information, where the indication information is used to indicate the transmission mode used for data transmission.

In an optional implementation, the receiving unit 502 is specifically configured to:

Receive first indication information, the first indication information is used to instruct data transmission to adopt a first transmission mode, and the first transmission mode is a data transmission mode used when it is in an inactive state.

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

Please refer to Figure 6. Figure 6 is a schematic structural diagram of another communication device provided by an embodiment of the present application, which is used to implement the functions of the terminal device in Figure 3 above. The communication device 600 may be a terminal device or a device for a terminal device. The device for the terminal device may be a chip system or a chip within the terminal device. Among them, the chip system can be composed of chips, or can also include chips and other discrete devices.

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

The communication device 600 includes at least one processor 620, which is used to implement the data processing function of the terminal device or network device in the method provided by the embodiment of the present application. The communication device 600 may also include a communication interface 610, which is used to implement the sending and receiving operations of the terminal device or the network device in the method provided by the embodiment of the present application. In this embodiment of the present application, the processor 620 can be a central processing unit (Central Processing Unit, CPU), and the processor can also be other general-purpose processors, digital signal processors (Digital Signal Processor, DSP), application-specific integrated circuits ( Application Specific Integrated Circuit (ASIC), off-the-shelf programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc. In this embodiment of the present application, the communication interface 610 may be a transceiver, a circuit, a bus, a module, or other types of communication interfaces for communicating with other devices through a transmission medium. For example, the communication interface 610 is used for devices in the communication device 600 to communicate with other devices. The processor 620 uses the communication interface 610 to send and receive data, and is used to implement the method described in Figure 3 of the above method embodiment.

Communication device 600 may also include at least one memory 630 for storing program instructions and/or data. Memory 630 and processor 620 are coupled. The coupling in the embodiment of this application is an indirect coupling or communication connection between devices, units or modules, which may be in electrical, mechanical or other forms, and is used for information interaction between devices, units or modules. Processor 620 may cooperate 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 turned on, the processor 620 can read the software program in the memory 630, interpret and execute the instructions of the software program, and process the data of the software program. When data needs to be sent wirelessly, the processor 620 performs baseband processing on the data to be sent, and then outputs the baseband signal to the radio frequency circuit (not shown in the figure). The radio frequency circuit performs radio frequency processing on the baseband signal and transmits the radio frequency signal through the antenna in the form of electromagnetic waves. Send outward. When data is sent to the communication device 600, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor 620. The processor 620 converts the baseband signal into data and processes the data. for processing.

In another implementation, the radio frequency circuit and antenna can be set up independently of the processor 620 that performs baseband processing. For example, in a distributed scenario, the radio frequency circuit and antenna can be set up remotely and independently of the communication device. layout.

The embodiment of the present application does not limit the specific connection medium between the communication interface 610, the processor 620 and the memory 630. In the embodiment of the present application, the memory 630, the processor 620 and the communication interface 610 are connected through a bus 640 in Figure 6. The bus is represented by a thick line in Figure 6. The connection methods between other components are only schematically explained. , is not limited. The bus can be divided into address bus, data bus, control bus, etc. For ease of expression, only one A thick line indicates, but does not indicate, only one bus or type of bus.

When the communication device 600 is used in a terminal device, for example, when the communication device 600 is a chip or a chip system, the communication interface 610 may output or receive a baseband signal. When the communication device 600 is specifically a terminal device, what the communication interface 610 outputs or receives may be a radio frequency signal.

It should be noted that the communication device can perform the relevant steps of the terminal device or the network device in the foregoing method embodiments. For details, please refer to the implementation provided by each of the above steps, which will not be described again here.

For various devices and products applied or integrated in communication devices, each module included in them can be implemented in the form of hardware such as circuits. Different modules can be located in the same component (for example, a chip, circuit module, etc.) or in different components in the terminal. , or at least some of the modules can be implemented in the form of a software program, which runs on the processor integrated inside the terminal, and the remaining (if any) modules can be implemented in hardware such as circuits.

The memory described above may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. Among them, non-volatile memory can be read-only memory (ROM), programmable rom (PROM), erasable programmable read-only memory (erasable prom, EPROM), electrically removable memory. Erase electrically programmable read-only memory (EEPROM) or flash memory. Volatile memory can be random access memory (RAM), which is used as an external cache. By way of illustration, but not limitation, many forms of random access memory (RAM) are available, such as static random access memory (SRAM), dynamic random access memory (DRAM) ), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), Synchronously connect dynamic random access memory (synchlink DRAM, SLDRAM) and direct memory bus random access memory (direct rambus RAM, DR RAM).

An embodiment of the present application provides a chip. The chip includes: processor and memory. The number of processors may be one or more, and the number of memories may be one or more. By reading the instructions and data stored in the memory, the processor can perform the above-mentioned data transmission method shown in Figure 3 and the steps performed by related implementations.

As shown in Figure 7, Figure 7 is a schematic structural diagram of a module device provided by an embodiment of the present application. The module device 700 can perform the relevant steps of the terminal device or network device in the aforementioned method embodiment. The module device 700 includes: a communication module 701, a power module 702, a storage module 703 and a chip module 704. Among them, the power module 702 is used to provide power for the module device; the storage module 703 is used to store data and/or instructions; the communication module 701 is used to communicate with external devices; the chip module 704 is used to call the storage module The data and/or instructions stored in 703, combined with the communication module 701, can execute the above The data transmission method shown in Figure 3 and the steps performed by related implementations.

An embodiment of the present application also provides a computer-readable storage medium. The computer-readable storage medium stores a computer program, and the computer program includes program instructions. When the electronic device executes the program instructions, the steps performed by the terminal device in the data transmission method shown in Figure 3 are implemented, or the steps performed by the terminal device are implemented. Figure 3 shows the steps performed by the network device in the data transmission method.

The computer-readable storage medium may be an internal storage unit of the terminal device or network device described in any of the preceding embodiments, such as a hard disk or 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), or a secure digital device equipped on the device. , SD) card, flash card, etc. Further, the computer-readable storage medium may also include both an internal storage unit and an external storage device of the terminal device or network 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 a computer can access, or a data storage device such as a server or a data center that contains one or more sets of available media. The available media may be magnetic media (eg, floppy disk, hard disk, tape), optical media (eg, high-density digital video disc (DVD)), or semiconductor media. The semiconductor medium may be a solid state drive.

Regarding the various modules/units included in each device and product described in the above embodiments, they may be software modules/units or hardware modules/units, or they may be partly software modules/units and partly hardware modules/units. . For example, for each device or product applied to or integrated into a chip, each module/unit included therein can be implemented in the form of hardware such as circuits, or at least some of the modules/units can be implemented in the form of a software program. The software program Running on the processor integrated inside the chip, the remaining (if any) modules/units can be implemented using circuits and other hardware methods; for various devices and products applied to or integrated into the chip module, each module/unit included in it can They are all implemented in the form of hardware such as circuits. Different modules/units can be located in the same component of the chip module (such as chips, circuit modules, etc.) or in different components. Alternatively, at least some modules/units can be implemented in the form of software programs. The software program runs on the processor integrated inside the chip module, and the remaining (if any) modules/units can be implemented using circuits and other hardware methods; for each device and product that is applied to or integrated in the data collection node, it includes Each module/unit can be implemented in the form of hardware such as circuits. Different modules/units can be located in the same component (for example, chip, circuit module, etc.) or in different components in the terminal, or at least some of the modules/units can use software programs. This software program runs on the processor integrated inside the data collection node, and the remaining (if any) modules/units can be implemented using circuits and other hardware methods.

The above embodiments may be implemented in whole or in part by software, hardware, firmware, or any other combination. When implemented using 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 includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on the computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another, e.g., the computer instructions may be transferred from a website, computer, server, or data center Transmission by wired or wireless means to another website site, computer, server or data center.

It should be understood that in the various embodiments of the present application, the size of the sequence numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its functions and internal logic, and should not be used in the embodiments of the present application. The implementation process constitutes any limitation.

In the several embodiments provided in this application, it should be understood that the disclosed methods, devices and systems can be implemented in other ways. For example, the device embodiments described above are only illustrative; for example, the division of the units is only a logical function division, and there may be other division methods during actual implementation; for example, multiple units or components may be combined or can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, and the indirect coupling or communication connection of the devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

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

The above-mentioned integrated unit implemented in the form of a software functional unit can be stored in a computer-readable storage medium. The above-mentioned software functional unit is stored in a storage medium and includes a number of instructions to cause a computer device (which can be a personal computer, a server, or a gateway node, etc.) to execute some steps of the method described in various embodiments of the present invention.

Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be implemented by instructing relevant hardware through a computer program. The program can be stored in a computer-readable storage medium. The program can be stored in a computer-readable storage medium. During execution, the process may include the processes of the embodiments of each of the above methods. Wherein, the storage medium can be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM) or a random access memory (Random Access Memory, RAM) etc.

What is disclosed above is only a preferred embodiment of the present application. Of course, it cannot be used to limit the scope of rights of the present application. Those of ordinary skill in the art can understand all or part of the processes for implementing the above embodiments, and according to the rights of the present application Equivalent changes required are still within the scope of the application.

Claims

A data transmission method, characterized by including:

receive paging messages;

In response to the paging message, indication information is sent, where the indication information is used to indicate the transmission mode used for data transmission.
The method of claim 1, wherein the sending of indication information in response to the paging message includes:

In response to the paging message, first indication information is sent, and the first indication information is used to instruct data transmission to adopt a first transmission mode, and the first transmission mode is a data transmission mode used when it is in an inactive state.
The method of claim 2, wherein sending the first indication information includes:

Send a first message, where the first message includes the first indication information, and the first message is message 3 or message A in the random access process.
The method of claim 2, wherein sending the first indication information includes:

Send the media access control protocol data unit MAC PDU. The MAC PDU includes the media access control subheader MAC subheader. The MAC subheader includes a logical channel identification field. The logical channel identification field is used to indicate that the first transmission is used for data transmission. Way.
The method of claim 2, wherein sending the first indication information includes:

Send a second message, where the second message includes the first indication information, the second message is a recovery request message, and the first indication information is the recovery reason field included in the second message.
The method of claim 2, wherein sending the first indication information includes:

Send a second message, where the second message includes the first indication information, and the second message is a recovery request message.
The method of claim 1, wherein the sending of indication information in response to the paging message includes:

In response to the paging message, second indication information is sent, and the second indication information is used to instruct data transmission to adopt a second transmission mode, and the second transmission mode is the data transmission mode used when in the connected state.
The method according to claim 7, characterized in that before sending the second indication information, further comprising:

Monitor the physical downlink control channel PDCCH in the search space corresponding to the first transmission mode.
A data transmission method, characterized by including:

Send paging message;

Receive indication information, where the indication information is used to indicate the transmission mode used for data transmission.
The method of claim 9, wherein the receiving indication information includes:

Receive first indication information, the first indication information is used to instruct data transmission to adopt a first transmission mode, and the first transmission mode is a data transmission mode used when it is in an inactive state.
The method of claim 10, wherein receiving the first indication information includes:

Receive a first message, where the first message includes the first indication information, and the first message is message 3 or message A in the random access process.
The method of claim 10, wherein receiving the first indication information includes:

Receive the media access control protocol data unit MAC PDU. The MAC PDU includes a media access control subheader MAC subheader. The MAC subheader includes a logical channel identification field. The logical channel identification field is used to indicate that the first transmission is used for data transmission. Way.
The method of claim 10, wherein receiving the first indication information includes:

A second message is received, the second message includes the first indication information, the second message is a recovery request message, and the first indication information is the recovery reason field included in the second message.
The method of claim 10, wherein receiving the first indication information includes:

A second message is received, the second message includes the first indication information, and the second message is a recovery request message.
The method of claim 9, wherein the receiving indication information includes:

Receive second indication information, the second indication information is used to indicate that data transmission adopts a second transmission mode, and the second The transmission method is the data transmission method used when in the connected state.
The method according to claim 15, characterized in that before receiving the second indication information, further comprising:

The physical downlink control channel PDCCH is sent in the search space corresponding to the first transmission mode.
A communication device, characterized by including:

A receiving unit used to receive paging messages;

A sending unit, configured to respond to the paging message and send indication information, where the indication information is used to indicate the transmission mode adopted for data transmission.
A communication device, characterized by including:

Sending unit, used to send paging messages;

The receiving unit is configured to receive indication information, where the indication information is used to indicate the transmission mode adopted for data transmission.
A communication device, characterized in that the communication device includes a processor and a memory, the processor and the memory are connected to each other, wherein the memory is used to store a computer program, and the computer program includes program instructions, so The processor calls the program instructions to perform the method as described in any one of claims 1 to 8, or to perform the method as described in any one of claims 9 to 16.
A chip, characterized in that the chip includes a processor and an interface, the processor is coupled to the interface; the interface is used to receive or output signals, the processor is used to execute code instructions, and the execution is as claimed in the claim The method according to any one of claims 1 to 8, or the method according to any one of claims 9 to 16.
A module device, characterized in that the module device includes a communication module, a power module, a storage module and a chip module, wherein:

The power module is used to provide electrical energy to the module equipment;

The storage module is used to store data and/or instructions;

The communication module is used to communicate with external devices;

The chip module is used to call the data and/or instructions stored in the storage module, combined with the communication module, to execute the method as described in any one of claims 1 to 8, or to execute the method as claimed in claims 9 to 8. The method described in any one of 16.
A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program, and the computer program includes program instructions. When the electronic device executes the program instructions, any of claims 1 to 8 is implemented. The method described in one of the claims 9 to 16, or the method described in any one of claims 9 to 16.