CN117320031A

CN117320031A - Uplink data transmission method and related device

Info

Publication number: CN117320031A
Application number: CN202210705162.XA
Authority: CN
Inventors: 郭英昊
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2022-06-21
Filing date: 2022-06-21
Publication date: 2023-12-29

Abstract

The invention provides a transmission method of uplink data and a related device, wherein the method comprises the following steps: receiving a first message from access network equipment, wherein the first message indicates that terminal equipment in a deactivated state enters the deactivated state, and the first message contains configuration information for configuring and authorizing small data transmission; acquiring configuration information of a measurement object and corresponding reference signal configuration information thereof, wherein the configuration information of the measurement object and the corresponding reference signal configuration information thereof are used for determining downlink path loss, the downlink path loss is used for timing advance verification, the reference signal configuration information is used for indicating resources for receiving reference signals, and the configuration information of the measurement object comprises reference signals used for measurement; and under the condition that the timing advance verification is successful, transmitting uplink data based on configuration information for configuring authorized small data transmission. The method solves the problem that the terminal equipment cannot determine the downlink path loss in the deactivation state, and further cannot complete timing advance verification.

Description

Uplink data transmission method and related device

Technical Field

The present disclosure relates to the field of communications, and in particular, to a method and an apparatus for transmitting uplink data.

Background

The small data transfer (small data transmission, SDT) project is mentioned in the third generation partnership project (3rd generation partnership project,3GPP) standard, primarily to optimize signaling overhead and power consumption for small data traffic that is infrequently sent by users. For terminal devices in a radio resource control (radio resource control, RRC) deactivated state (hereinafter referred to as deactivated state), some small data traffic transmissions make the terminal devices need to enter an RRC connected state (hereinafter referred to as connected state) to perform data packet transmission, resulting in reduced network performance and increased power consumption of the terminal devices. In the SDT project, the terminal device may use a Configured Grant (CG) resource to send small data (hereinafter referred to as CG-SDT) in a deactivated state, so that it is not necessary to enter a connected state to obtain an uplink sending resource, and signaling overhead and energy consumption of the terminal device are reduced.

Before CG-SDT is performed, the terminal device needs Timing Advance (TA) verification, and CG-SDT can be performed only when TA verification is successful. Specifically, the terminal device may compare the current downlink path loss with the last downlink path loss, and determine whether the TA verification is successful according to the relationship between the difference value of the current downlink path loss and the last downlink path loss and the preset threshold. At present, how to complete TA verification for a terminal device that is already in a deactivated state is a problem that needs to be solved.

Disclosure of Invention

The application provides a transmission method of uplink data and a related device, so as to provide a solution for finishing TA verification for terminal equipment in a deactivated state.

In a first aspect, the present application provides a method for transmitting uplink data, where the method may be performed by a terminal device, or may also be performed by a component (such as a chip, a chip system, etc.) configured in the terminal device, or may also be implemented by a logic module or software capable of implementing all or part of the functions of the terminal device, which is not limited in this application.

Wherein the terminal device is in a deactivated state.

Illustratively, the method includes: receiving a first message from access network equipment, wherein the first message indicates the terminal equipment to enter a deactivated state, and the first message contains CG-SDT configuration information; acquiring configuration information of a measurement object (measurement object, MO) and corresponding Reference Signal (RS) configuration information thereof, wherein the configuration information of the MO and the corresponding RS configuration information thereof are used for determining downlink path loss, the downlink path loss is used for TA verification, the RS configuration information is used for indicating resources of a receiving RS, and the configuration information of the MO includes an RS for measurement; and sending uplink data based on the CG-SDT configuration information under the condition that TA verification is successful.

Based on the technical scheme, for the terminal equipment in the deactivation state, under the condition that the first message is received and carries the configuration information of CG-SDT, the configuration information of MO and the corresponding RS configuration information are obtained so as to be used for determining downlink path loss and further carrying out TA verification, and under the condition that the TA verification is successful, uplink data is sent based on the configuration information of CG-SDT, so that the problem that the terminal equipment cannot determine downlink path loss and further cannot finish TA verification under the deactivation state is solved.

With reference to the first aspect, in some possible implementation manners of the first aspect, the configuration information of the MO and the RS configuration information corresponding to the MO are carried in a first message; and obtaining the configuration information of the MO and the corresponding RS configuration information thereof, wherein the method comprises the following steps: and acquiring the configuration information of the MO and the corresponding RS configuration information thereof from the first message.

With reference to the first aspect, in some possible implementation manners of the first aspect, acquiring configuration information of an MO and RS configuration information corresponding to the MO includes: and acquiring the configuration information of the MO and the corresponding RS configuration information of the MO from the access layer context of the terminal equipment.

The two modes for acquiring the configuration information of the MO and the corresponding RS configuration information are beneficial to improving the flexibility of acquiring the information by the terminal equipment.

With reference to the first aspect, in some possible implementation manners of the first aspect, when the first message is a first message received for the first time after the terminal device enters a deactivated state from a connected state, the configuration information of the MO and the RS configuration information corresponding to the configuration information are used to determine downlink path loss each time the first message from the access network device is received.

When the terminal equipment enters the deactivation state from the connection state and receives the first message for the first time, the configuration information of the MO and the corresponding RS configuration information of the MO can be obtained from the access layer context of the terminal equipment, and the downlink path loss can be determined based on the configuration information of the MO and the corresponding RS configuration information of the MO when the first message is received every time. In this way, the terminal equipment does not need to acquire the configuration information of the MO after receiving the first message each time, which is beneficial to reducing the energy consumption of the terminal equipment.

With reference to the first aspect, in some possible implementation manners of the first aspect, when the terminal device receives the first message from the access network device again, and the first message is a message responding to the CG-SDT, the method further includes: and acquiring the configuration information of the MO and the corresponding RS configuration information from the access layer context of the terminal equipment, wherein the configuration information of the MO and the corresponding RS configuration information are used for determining the downlink path loss at this time.

When the terminal equipment receives the first message from the access network equipment again and the first message is a message responding to the CG-SDT, the configuration information of the MO and the RS configuration information corresponding to the MO may be obtained from the access layer context again, in other words, once the terminal equipment receives the first message and the first message is a message responding to the CG-SDT, the configuration information of the MO and the RS configuration information corresponding to the MO may be obtained from the access layer context so as to determine the downlink path loss, thereby completing TA verification.

With reference to the first aspect, in certain possible implementation manners of the first aspect, the method further includes: and after the MO is measured, deleting the configuration information of the MO and the corresponding RS configuration information of the MO.

When the terminal equipment receives the first message, and the first message is a message responding to the CG-SDT, under the condition that the configuration information of the MO and the RS configuration information corresponding to the MO are obtained from the access layer context, after the MO is measured, that is, after the downlink path loss is determined, the configuration information of the MO and the RS configuration information corresponding to the MO can be deleted, which is beneficial to saving the memory of the terminal equipment.

With reference to the first aspect, in some possible implementations of the first aspect, the first message is a message for releasing the RRC connection.

In a second aspect, the present application provides a method for transmitting uplink data, where the method may be performed by an access network device, or may also be performed by a component (such as a chip, a chip system, etc.) configured in the access network device, or may also be implemented by a logic module or software capable of implementing all or part of the functions of the access network device, which is not limited in this application.

Illustratively, the method includes: sending a first message to a terminal device in a deactivated state, wherein the first message indicates the terminal device to enter the deactivated state, the first message contains CG-SDT configuration information, MO configuration information and corresponding RS configuration information, the MO configuration information and corresponding RS configuration information are used for determining downlink path loss, the downlink path loss is used for TA verification, the RS configuration information is used for indicating resources of the terminal device for receiving RS, and the MO configuration information comprises RS used for measurement; and receiving uplink data from the terminal equipment, wherein the uplink data is sent by the terminal equipment based on the CG-SDT configuration information under the condition that the TA verification is successful.

Based on the technical scheme, the access network device can carry the configuration information of the MO and the corresponding RS configuration information in the first message and send the configuration information to the terminal device, so that the terminal device can receive the RS for measurement based on the RS configuration information to determine the downlink path loss, thereby finishing TA verification, and solving the problem that the terminal device cannot determine the downlink path loss in a deactivated state, so that the TA verification cannot be finished.

In a third aspect, the present application provides a communication device, which may implement the method as described in any one of the possible implementations of the first aspect and the first aspect, or implement the method as described in any one of the possible implementations of the second aspect and the second aspect. The apparatus comprises corresponding means for performing the above-described method. The units comprised by the device may be implemented in software and/or hardware.

In a fourth aspect, the present application provides a communication device comprising a processor. The processor is coupled to the memory and operable to execute a computer program in the memory to implement the method as described in any one of the possible implementations of the first aspect and the first aspect or to implement the method as described in any one of the possible implementations of the second aspect and the second aspect.

Optionally, the apparatus may further comprise a memory for storing a computer program (which may also be referred to as code or instructions), which is readable by a processor to enable the apparatus to implement the method described in any one of the possible implementations of the first aspect and the first aspect, or to implement the method described in any one of the possible implementations of the second aspect and the second aspect.

Optionally, the apparatus may further comprise a communication interface for the apparatus to communicate with other devices, which may be, for example, a transceiver, a circuit, a bus, a module or other type of communication interface.

In a fifth aspect, the present application provides a communication system comprising a terminal device for implementing the method described in any one of the possible implementations of the first aspect and an access network device for implementing the method described in any one of the possible implementations of the second aspect and the second aspect.

In a sixth aspect, the present application provides a computer readable storage medium having stored therein a computer program or instructions which, when executed, implement the method as described in any one of the possible implementations of the first aspect and the first aspect, or implement the method as described in any one of the possible implementations of the second aspect and the second aspect.

In a seventh aspect, the present application provides a computer program product comprising instructions which, when executed, implement the method as described in any one of the possible implementations of the first aspect and the first aspect, or implement the method as described in any one of the possible implementations of the second aspect and the second aspect.

In an eighth aspect, the present application provides a chip system, the chip system comprising a processor and further comprising a memory for implementing the method described in any one of the possible implementations of the first aspect and the first aspect, or implementing the method described in any one of the possible implementations of the second aspect and the second aspect.

In one possible design, the system on a chip further includes a memory to hold program instructions and data, the memory being located either within the processor or external to the processor.

The chip system may be formed of a chip or may include a chip and other discrete devices.

It should be understood that the third aspect to the eighth aspect of the present application correspond to the technical solutions of the first aspect and the second aspect of the present application, and the advantages obtained by each aspect and the corresponding possible embodiments are similar, and are not repeated.

Drawings

FIG. 1 is a schematic flow chart of a CG-SDT process provided by an embodiment of the application;

FIG. 2 is a schematic diagram of a system architecture suitable for use in the methods provided by embodiments of the present application;

fig. 3 is a schematic flowchart of a transmission method of uplink data provided in an embodiment of the present application;

FIG. 4 is a schematic block diagram of a communication device provided by an embodiment of the present application;

FIG. 5 is another schematic block diagram of a communication device provided by an embodiment of the present application;

fig. 6 is a schematic structural diagram of an access network device according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a terminal device provided in an embodiment of the present application.

Detailed Description

The technical solutions in the present application will be described below with reference to the accompanying drawings.

The technical scheme provided by the application can be applied to various communication systems, such as: global system for mobile communications (global system for mobile communications, GSM), code division multiple access (code division multiple access, CDMA) system, wideband code division multiple access (wideband code division multiple access, WCDMA) system, general packet radio service (general packet radio service, GPRS), wireless local area network (wireless local area network, WLAN), long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD), side-chain (sidelink) communication system, general mobile communication system (universal mobile telecommunication system, UMTS), worldwide interoperability for microwave access (worldwide interoperability for microwave access, wiMAX) communication system, fifth generation (5th generation,5G) mobile communication system, or new wireless access technology (new radio access technology, NR). The 5G mobile communication system may include a non-independent Networking (NSA) and/or an independent networking (SA), among others.

The technical scheme provided by the application can also be applied to future communication systems, such as a sixth generation (6th Generation,6G) mobile communication system and the like. The present application is not limited in this regard.

Before specifically describing the uplink data transmission method provided by the embodiment of the present application, a simple description is first made on each network element involved in the present application:

1. terminal equipment: may be referred to as a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user equipment.

The terminal device may be a device providing voice/data connectivity to a user, e.g., a handheld device with wireless connectivity, an in-vehicle device, etc. Currently, some examples of terminal devices may be: a mobile phone (mobile phone), a tablet (pad), a computer with wireless transceiving function (such as a notebook, a palm computer, etc.), a mobile internet device (mobile internet device, MID), a Virtual Reality (VR) device, an augmented reality (augmented reality, AR) device, a wireless terminal in an industrial control (industrial control), a wireless terminal in an unmanned aerial vehicle (self driving), a wireless terminal in a telemedicine (remote media), a wireless terminal in a smart grid (smart grid), a wireless terminal in a transportation security (transportation safety), a wireless terminal in a smart city (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 a wireless communication function, a computing device or other processing device connected to a wireless modem, a wireless terminal in a wearable device, a 5G terminal or a future-type of mobile phone (mobile phone), a mobile phone type (mobile phone) in a public network (37, a public type of mobile phone).

Furthermore, the terminal device may also be a terminal device in an IoT system. IoT is an important component of future information technology development, and its main technical feature is to connect an item with a network through a communication technology, so as to implement man-machine interconnection and an intelligent network for object interconnection. IoT technology may enable massive connectivity, deep coverage, and terminal power saving through, for example, narrowband (NB) technology.

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

2. Access Network (AN) device: the access network can provide access functions for authorized users in a specific area, and can use transmission tunnels with different qualities according to the level of the users, the requirements of services and the like. The access network may be an access network employing different access technologies. There are two types of current radio access technologies: 3GPP access technologies (e.g., radio access technologies employed in 3G, 4G, or 5G systems) and non-3GPP (non-3 GPP) access technologies. The 3GPP access technology refers to an access technology conforming to the 3GPP standard specification, for example, access network devices in a 5G system are referred to as next generation base station nodes (next generation node base station, gNB). The non-3GPP access technology refers to an access technology that does not conform to the 3GPP standard specification, for example, a null interface technology represented by an Access Point (AP) in wireless fidelity (wireless fidelity, wi-Fi).

An access network implementing access network functions based on wireless communication technology may be referred to as a radio access network (radio access network, RAN). The radio access network can manage radio resources, provide access service for the terminal equipment, and further complete the forwarding of control signals and user data between the terminal and the core network.

The radio access network devices may include, for example, but are not limited to: a radio network controller (radio network controller, RNC), evolved Node B (eNB), base station controller (base station controller, BSC), base transceiver station (base transceiver station, BTS), home base station (home evolved Node B, or home Node B, HNB), base Band Unit (BBU), AP in Wi-Fi system, radio relay Node, radio backhaul Node, transmission point (transmission point, TP), or transmission reception point (transmission and reception point, TRP), etc., as well as a gNB or transmission point (TRP or TP) in a 5G (e.g., NR) system, one or a group (including multiple antenna panels) of base stations in a 5G system, or as well as network nodes constituting a gNB or transmission point, such as a baseband unit (BBU), or a Distributed Unit (DU), or a base station in a next generation communication 6G system, etc. The eNB is a device which is deployed in a wireless access network and meets the 4G standard and provides wireless communication function for terminal equipment; the gNB is a device deployed in a radio access network to satisfy the 5G standard to provide a wireless communication function for a terminal device.

It should be understood that, in this application, the access network devices described below refer to radio access network devices unless otherwise specified. In addition, the specific device forms of the terminal device and the access network device are not limited in the present application.

3. Access and mobility management function (access and mobility management function, AMF) network element: the AMF may be abbreviated as AMF, which belongs to a core network part and is mainly used for registration, mobility management, tracking area update procedures of terminal devices in a mobile network, where an access and mobility management network element terminates NAS messages, is responsible for registration management, connection management and reachability management, allocates tracking area list (TA list), mobility management, etc., and is responsible for forwarding session management (session management, SM) messages to session management network elements. The AMF may provide a session management message transmission channel for the terminal device and the session management function (session management function, SMF) network element, and provide authentication and authentication functions for the user when accessing, the terminal device and the wireless core network control plane access point.

4. SMF network element: the method is mainly used for user plane function (user plane function, UPF) network element selection, UPF network element reselection, internet protocol (internet protocol, IP) address allocation, session establishment, modification and release, and quality of service (quality of service, qoS) control;

5. UPF network element: the UPF can be abbreviated as UPF and is mainly used for realizing all or part of the following functions: interconnecting protocol data unit (protocol data unit, PDU) sessions with a data network; packet routing and forwarding (e.g., supporting forwarding of traffic after uplink classification (uplink classifier) to a data network, supporting branching point (branching point) to support multi-homed PDU sessions); packet detection, etc.

For a better understanding of the methods provided by the embodiments of the present application, the terms referred to in the present application will be briefly described below.

1. RRC deactivated state: a state of the terminal device is defined in the NR protocol. The deactivated state may also be referred to as an RRC deactivation state, or simply a deactivation state, etc. The RRC connection is broken between the terminal device in the deactivated state and the access network device, except that the access network device may save the access layer context (access stratum context, AS context) of the terminal device in the deactivated state.

In one implementation, the access network device may configure the terminal device to enter a deactivated state via an RRC message. For example, the access network device may configure the terminal device to enter a deactivated state through an RRC message for releasing the RRC connection. The message for releasing the RRC connection may be, for example, an RRC release (RRC release) message.

In LTE, a state similar to the deactivated state is also present, and is called a light-duty connected state. The RRC message for configuring the terminal device to enter the lightweight connected state may be, for example, an RRC connection release (RRC connection release) message.

Hereinafter, for convenience of explanation, the state of the terminal device having the above characteristics is collectively referred to as a deactivated state to distinguish from an RRC idle state and an RRC connected state.

It should be understood that the states of these terminal devices are named for ease of distinction only and should not constitute any limitation to the present application. The present application does not exclude that other possible designations are defined in future protocols instead of existing designations, but with the same or similar properties. For example, the lightweight connection state is replaced by a deactivated state.

2. CG-SDT: the method is mainly used for optimizing signaling overhead and power consumption caused by small data services which are not frequently transmitted by users. For the terminal equipment in the deactivated state, some small data service transmission makes the terminal equipment need to enter a connection state to execute the sending of the data packet, which results in reduced network performance and increased energy consumption of the terminal equipment.

The process of CG-SDT will be described in detail below in conjunction with fig. 1. Fig. 1 is a schematic flow chart of a CG-SDT process provided by an embodiment of the present application.

S110, the access network equipment sends an RRC release message to the terminal equipment. Accordingly, the terminal device receives the RRC release message from the access network device.

The RRC release message releases the terminal device from the connected state to the deactivated state, in other words, the terminal device enters the deactivated state after receiving the RRC release message. The RRC release message carries the configuration information of the CG-SDT. The configuration information of the CG-SDT includes CG resources, such as physical layer parameters including time domain and frequency domain allocation, time domain offset, frequency hopping offset, period, resource allocation mode, modulation coding mode, transport block size, and the like.

S120, triggering CG-SDT flow by the terminal equipment.

And triggering the CG-SDT flow if the condition for triggering the CG-SDT is met. Among other things, conditions triggering CG-SDT include, but are not limited to: the data radio bearer (data radio bearer, DRB) of the uplink data is configured with CG-SDT, the TA of CG-SDT is successfully verified, and the reference signal received power (reference signal receiving power, RSRP) of the synchronization signal block (synchronization signal block, SSB) is higher than the preset threshold.

S130, the terminal equipment sends an RRC connection recovery request to the access network equipment.

The RRC connection recovery request carries the user plane data or the control plane data configured with the CG-SDT.

One possible design is that the terminal device selects an SSB, selects a CG resource corresponding to the SSB based on the SSB, and sends an RRC connection recovery request (RRC connection resume request) on the CG resource, where the RRC connection recovery request carries user plane data or control plane data configured with a CG-SDT.

If the RRC connection recovery request received by the access network device carries the user plane data or the control plane data configured with the CG-SDT, the terminal device will not be released to the connected state, in other words, if the RRC connection recovery request received by the access network device does not carry the user plane data or the control plane data configured with the CG-SDT, the terminal device is switched to the connected state.

S140, the access network equipment sends a response message to the terminal equipment. Accordingly, the terminal device receives the response message from the access network device.

Among them, S130 and S140 can be understood as an initial CG-SDT.

The above-mentioned response message may be understood as a response message of the RRC connection restoration request, and may also be understood as a reply of the initial CG-SDT, and the response message may be a physical downlink control channel (physical downlink control channel, PDCCH) scheduling message.

If the terminal equipment successfully receives the response message from the access network equipment, namely, successfully receives the reply of the initial CG-SDT, the initial CG-SDT is successful.

It should be appreciated that after the initial CG-SDT, the user plane data or control plane data of the terminal device may or may not have been sent. If the transmission is completed, executing S170; if not, S150 is executed.

S150, the terminal equipment sends uplink data to the access network equipment.

The uplink data is user plane data or control plane data of the terminal equipment which is not transmitted after the initial CG-SDT.

One possible design is that the terminal device may send uplink data over CG resources.

Another possible design is that the terminal device may send uplink data through an uplink dynamic scheduling grant. In this design, the terminal device also needs to perform S160, i.e. the terminal device receives an uplink dynamic scheduling grant from the access network device. In dynamic scheduling, the uplink grant used by each of the terminal devices may be scheduled by downlink control information (downlink control information, DCI) in the PDCCH channel. CG resources refer to uplink configuration grants without dynamic grants, equivalent to semi-static scheduling. The access network device may allocate an uplink configuration grant to the terminal device through DCI or RRC signaling, where the configuration grant may be used multiple times in a periodic form.

S170, the terminal equipment receives the RRC release message from the access network equipment.

The RRC release message indicates that the terminal device enters the deactivated state, which may also be understood as indicating that the terminal device remains in the deactivated state. And after the terminal equipment receives the RRC release message, ending the CG-SDT process. It can be understood that the RRC release message may also carry configuration information of CG-SDT to be performed next time.

Optionally, the CG-SDT process shown in fig. 1 may further include the steps of:

s180, the terminal equipment receives downlink data from the access network equipment.

The terminal device may receive downlink data from the access network device by dynamically scheduling a downlink grant, for example.

It should be appreciated that S150, S160, and S180 may be referred to as an accompanying CG-SDT process.

3. TA verification of CG-SDT: the terminal equipment firstly performs TA verification when sending the initial CG-SDT, and the CG-SDT can be sent after the TA verification is successful. Specifically, when an initial CG-SDT is sent, the terminal device compares the current downlink path loss with the last downlink path loss, and if the difference between the current downlink path loss and the last downlink path loss is lower than a preset threshold, the TA verification is successful; otherwise, TA verification fails.

In order to facilitate understanding of the uplink data transmission method provided by the embodiment of the present application, a system architecture suitable for the method provided by the embodiment of the present application will be described below. It may be understood that the system architecture described in the embodiments of the present application is for more clearly describing the technical solutions of the embodiments of the present application, and does not constitute a limitation on the technical solutions provided by the embodiments of the present application.

Fig. 2 is a schematic diagram of a system architecture suitable for use in the method provided in the embodiments of the present application.

As shown in fig. 2, the system includes a 5G core (5G core,5 GC) and a radio access network (e.g., NG-RAN), and the 5GC includes a core network device 210 and a core network device 220, which may be, for example, an AMF/UPF. The NG-RAN includes access network devices 230-260, where access network devices 230-260 may be gnbs and/or enbs, e.g., access network device 230 and access network device 240 are gnbs, and access network device 250 and access network device 260 are enbs. The plurality of access network devices may be connected to each other through an Xn interface (Xn interface), which may be connected to a 5GC through an NG interface, more specifically, to an AMF through an N2 interface, and to a UPF through an N3 interface.

It should be understood that fig. 2 is only an example, and two core network devices and four access network devices are shown, but this should not constitute any limitation to the present application. The number of each device may be one or more. The access network devices accessing the same core network may be one or more.

It should also be understood that although not shown in fig. 2, one or more terminal devices may be connected under each access network device, and the terminal devices may be in communication with the access network device, e.g., CG-SDT may be performed between the terminal devices and the access network device.

The terminal device performs TA verification when sending the initial CG-SDT, and the CG-SDT can be sent only after the TA verification is successful. At present, for a terminal device entering a deactivated state from a connected state, TA verification can be completed when an initial CG-SDT is sent, however, for a terminal device already in a deactivated state, how to complete TA verification is a problem to be solved.

In order to solve the above problems, the present application provides a method, in which a terminal device in a deactivated state obtains RS configuration information corresponding to configuration information of an MO when receiving a first message carrying the configuration information of CG-SDT, so as to determine downlink path loss, and further perform TA verification, and in which uplink data is sent based on the configuration information of CG-SDT when the TA verification is successful, so as to solve the problem that the terminal device cannot determine downlink path loss in the deactivated state, and further cannot complete TA verification.

The following describes in detail the uplink data transmission method provided in the embodiment of the present application with reference to the accompanying drawings.

It should be understood that the embodiments shown below describe the method from the point of view of terminal device and access network device interaction. The access network device may be any one of the access network devices 230 to 260 shown in fig. 2, and the terminal device may be a terminal device connected to the access network device.

It should also be understood that the embodiments shown below, while described by way of example in terms of interactions between devices, should not be construed as limiting the subject matter of the method. The method provided by the embodiments of the present application can be executed as long as the program recorded with the code of the method provided by the embodiments of the present application can be executed. For example, the terminal device may be replaced with a component (e.g., a chip, a system on a chip, etc.) configured in the terminal device, or other functional modules capable of calling and executing the program. For another example, the access network device may be replaced by a component (e.g., a chip, a system on a chip, etc.) configured in the access network device, or other functional modules capable of invoking a program and executing the program. The embodiments of the present application are not limited in this regard.

Fig. 3 is a schematic flowchart of a method 300 for transmitting uplink data according to an embodiment of the present application. The method 300 shown in fig. 3 may include S310 to S330, and the respective steps shown in fig. 3 will be described in detail below.

S310, the access network equipment sends a first message to the terminal equipment, wherein the first message indicates the terminal equipment to enter a deactivated state. Accordingly, the terminal device receives the first message from the access network device.

Wherein the terminal device is in a deactivated state, in other words, the first message indicates that the terminal device in the deactivated state remains in the deactivated state. The first message contains configuration information of the CG-SDT. The configuration information of the CG-SDT includes CG resources including, but not limited to, physical layer parameters such as time domain and frequency domain allocation, time domain offset, frequency hopping offset, period, resource allocation mode, modulation coding mode, transport block size, etc.

Alternatively, the first message may be a message for releasing the RRC connection, for example, in NR, the first message is an RRC release message. In LTE, this first message may be, for example, a RRC connection release message.

It should be understood that the specific names of the first messages listed herein are examples only and should not be construed as limiting the present application in any way. The present application does not exclude the possibility of defining other messages in future protocols to achieve the same or similar functionality. For example, the first message may also be an RRC resume (RRC resume) message in NR or an RRC connection resume (RRC connection resume) message in LTE.

Of course, the first message may be another message that may be used to instruct the terminal device to enter the deactivated state. The present application is not limited in this regard.

The terminal device may determine whether to enter a deactivated state based on a field in the first message. The specific process of the terminal device entering the deactivated state according to the first message may refer to the existing technology, and for brevity, will not be described herein again.

One possible implementation manner is that the terminal device in the deactivated state receives an RRC release message from the access network device, where the RRC release message instructs the terminal device to enter the deactivated state, i.e. still remain in the deactivated state, and the RRC release message carries the configuration information of the CG-SDT.

S320, the terminal equipment acquires the configuration information of the MO and the corresponding RS configuration information.

The configuration information of the MO and the RS configuration information corresponding to the configuration information are used to determine the downlink path loss, and the downlink path loss is used to perform TA verification. The RS configuration information is used to indicate resources for receiving the RS, and the terminal device may receive the reference signal from the access network device based on the RS configuration information, in other words, the terminal device may receive the reference signal from the access network device on the corresponding resources.

The configuration information of the MO includes a reference signal for measurement, and the terminal device may perform measurement based on the reference signal, so as to obtain a measurement result, so as to calculate the downlink path loss. For example, the terminal device may receive a reference signal indicated in the configuration information of the MO on a corresponding resource and calculate the downlink path loss based on the RSRP actually measured by the reference signal. The specific process of calculating the downlink path loss may be referred to in the art and will not be described in detail herein.

Optionally, the configuration information of the MO may further include a cell that allows measurement, a cell that does not allow measurement, and the like.

The terminal device may acquire the configuration information of the MO and the RS configuration information corresponding to the MO in any one of the following manners:

in a first possible implementation manner, the configuration information of the MO and the RS configuration information corresponding to the configuration information are carried in the first message, in other words, the terminal device may obtain the configuration information of the MO and the RS configuration information corresponding to the configuration information from the first message. The first message is an RRC release message, where the RRC release message carries configuration information of the MO, the configuration information of the MO may be configured outside the configuration information of the CG-SDT, and the RS configuration information may be configured outside the configuration information of the MO.

A second possible implementation manner is that the terminal device obtains the configuration information of the MO and the RS configuration information corresponding to the MO from the access layer context of the terminal device.

The terminal device obtains the configuration information of the MO and the RS configuration information corresponding to the MO from the access stratum context, which has the following two possible designs:

the first possible design is that when the terminal device receives the first message for the first time after entering the deactivated state from the connected state, the configuration information of the MO and the RS configuration information corresponding to the configuration information may be obtained from the access layer context of the terminal device, and the downlink path loss may be determined based on the configuration information of the MO and the RS configuration information corresponding to the configuration information each time the first message is received. In this way, the terminal equipment does not need to acquire the configuration information of the MO after receiving the first message each time, which is beneficial to reducing the energy consumption of the terminal equipment. In an exemplary embodiment, when the terminal device receives an RRC release message from the access network device for the first time and the RRC release message carries CG-SDT configuration information, the terminal device obtains MO configuration information and RS configuration information corresponding to the MO configuration information from the access layer context, and then receives the RRC release message each time and when the RRC release message carries CG-SDT configuration information, the terminal device may determine downlink path loss based on the MO configuration information and RS configuration information corresponding to the MO configuration information. Or, the terminal device determines the downlink path loss based on the configuration information of the MO and the RS configuration information corresponding to the MO only when receiving the RRC release message and the RRC release message carries the configuration information of the CG-SDT.

The second possible design is that the terminal device receives the first message from the access network device again, and when the first message is a message responding to CG-SDT, configuration information of the MO and RS configuration information corresponding thereto are obtained from the access layer context of the terminal device again, where the configuration information of the MO and RS configuration information corresponding thereto are used to determine the downlink path loss this time. In other words, once the terminal device receives the first message, and when the first message is a message responding to CG-SDT, the configuration information of the MO and the RS configuration information corresponding to the MO may be obtained from the access layer context, so that the downlink path loss is determined this time, and further, TA verification is completed. In an exemplary embodiment, once the terminal device receives the RRC release message, the RCC release message carries CG-SDT configuration information, and when the RRC release message is a CG-SDT response message, the terminal device may obtain MO configuration information and RS configuration information corresponding to the MO configuration information from the access layer context, where the MO configuration information and RS configuration information corresponding to the MO configuration information are used to determine the downlink path loss this time.

Optionally, in a second possible design, after the terminal device measures the MO, the configuration information of the MO and the RS configuration information corresponding to the MO are deleted. In other words, in the second possible design, the obtained configuration information of the MO and the RS configuration information corresponding to the obtained configuration information are only used for determining the downlink path loss this time.

In an exemplary embodiment, once the terminal device receives the RRC release message, the RCC release message carries CG-SDT configuration information, and when the RRC release message is a message in response to CG-SDT, the terminal device obtains MO configuration information and RS configuration information corresponding to the MO from the access layer context, where the MO configuration information and RS configuration information corresponding to the MO configuration information are used to determine the downlink path loss this time, and after the terminal device measures the MO, that is, after measuring the reference signal, the terminal device deletes the MO configuration information and RS configuration information corresponding to the MO configuration information.

After determining the downlink path loss based on the MO configuration information and the corresponding RS configuration information, the terminal equipment compares the current downlink path loss with the stored last downlink path loss, and if the difference between the current downlink path loss and the stored last downlink path loss is lower than a preset threshold, TA verification is successful; if the difference value of the first and second parameters is larger than or equal to a preset threshold, the TA verification fails.

S320, the terminal equipment sends uplink data based on the CG-SDT configuration information under the condition that TA verification is successful.

And the terminal equipment can send uplink data based on the CG-SDT configuration information carried in the first message under the condition that the TA verification is successful, wherein the data is small data. For example, the terminal device transmits the user plane data or the control plane data configured with the CG-SDT based on the CG resource.

In addition, the terminal device may request to restore connection in case of TA authentication failure, and send uplink data to the access network device after entering the connection state.

Based on the technical scheme, for the terminal equipment in the deactivation state, under the condition that the first message is received and carries the configuration information of CG-SDT, the configuration information of MO corresponding to the configuration information of MO is obtained so as to determine downlink path loss and further perform TA verification, and under the condition that the TA verification is successful, uplink data is sent based on the configuration information of CG-SDT, so that the problem that the terminal equipment cannot determine downlink path loss and further cannot complete TA verification under the deactivation state is solved.

Fig. 4 to fig. 7 are schematic structural diagrams of a possible communication device according to an embodiment of the present application.

Fig. 4 is a schematic block diagram of a communication device 400 provided by an embodiment of the present application.

As shown in fig. 4, the communication apparatus 400 includes a processing unit 410, a transmitting unit 420, and a receiving unit 430.

In one possible design, the apparatus 400 is used to implement the functions of the terminal device in the method embodiment shown in fig. 3, or the apparatus 400 may include a module for implementing any function or operation of the terminal device in the method embodiment, where the module may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.

Illustratively, the receiving unit 430 is configured to receive a first message from the access network device, where the first message indicates that the terminal device enters a deactivated state, and the first message includes CG-SDT configuration information; the processing unit 410 is configured to obtain configuration information of the MO and RS configuration information corresponding to the configuration information, where the configuration information of the MO and RS configuration information corresponding to the configuration information are used to determine downlink path loss, the downlink path loss is used to perform TA verification, the RS configuration information is used to indicate resources of the receiving RS, and the configuration information of the MO includes the RS used for measurement; the sending unit 420 is configured to send uplink data based on the CG-SDT configuration information if TA authentication is successful.

In another possible design, the apparatus 400 is used to implement the functions of the access network device in the method embodiment shown in fig. 3, or the apparatus 400 may include a unit for implementing any function or operation of the access network device in the method embodiment shown in fig. 3, where the unit may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.

The sending unit 420 is configured to send a first message to a terminal device in a deactivated state, where the first message indicates that the terminal device enters the deactivated state, the first message includes CG-SDT configuration information, MO configuration information and RS configuration information corresponding to the MO configuration information, the MO configuration information and RS configuration information corresponding to the MO configuration information are used to determine downlink path loss, the downlink path loss is used to perform TA verification, the RS configuration information is used to indicate resources of the terminal device for receiving RS, and the MO configuration information includes RS used for measurement; the receiving unit 430 is configured to receive uplink data from the terminal device, where the uplink data is sent by the terminal device based on CG-SDT configuration information when TA authentication is successful.

The above-mentioned processing unit 410, transmitting unit 420 and receiving unit 430 may be directly described with reference to the related description in the method embodiment shown in fig. 3, which is not repeated herein.

It should be understood that the division of the units in the embodiments of the present application is illustrative, and is merely a logic function division, and there may be another division manner in actual implementation. In addition, each functional unit in the embodiments of the present application may be integrated in one processor, or may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

Fig. 5 is another schematic block diagram of a communication device 500 provided by an embodiment of the present application. The apparatus 500 may be a chip system, or may be an apparatus configured with a chip system to implement the communication function in the foregoing method embodiment. In the embodiments of the present application, the chip system may be formed by a chip, and may also include a chip and other discrete devices.

As shown in fig. 5, the apparatus 500 may include a processor 510 and a communication interface 520. Wherein communication interface 520 may be used to communicate with other devices via a transmission medium such that apparatus 500 may communicate with the other devices. The communication interface 520 may be, for example, a transceiver, an interface, a bus, a circuit, or a device capable of implementing a transceiver function. Processor 510 may input and output data using communication interface 520 and is used to implement the method described in the corresponding embodiment of fig. 3. In particular, the apparatus 500 may be used to implement the functions of the access network device or the terminal device in the above method embodiment.

When the apparatus 500 is used to implement the method shown in fig. 3, the processor 510 is used to implement the functions of the processing unit 410, and the communication interface 520 is used to implement the functions of the transmitting unit 420 and the receiving unit 430.

Optionally, the apparatus 500 further comprises at least one memory 530 for storing program instructions and/or data. Memory 530 is coupled to processor 510. 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 510 may operate in conjunction with memory 530. Processor 510 may execute program instructions stored in memory 530. At least one of the at least one memory may be included in the processor.

The specific connection medium between the processor 510, the communication interface 520, and the memory 530 is not limited in the embodiments of the present application. The present embodiment is illustrated in fig. 5 as being coupled between processor 510, communication interface 520, and memory 530 via bus 540. The connection of the bus 540 to other components is shown by a bold line in fig. 5, and is merely illustrative and not limiting. 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. 5, but not only one bus or one type of bus.

Fig. 6 is a schematic structural diagram of an access network device provided in an embodiment of the present application, for example, may be a schematic structural diagram of a base station. The base station 600 may perform the functions of the access network device in the above-described method embodiment. As shown in fig. 6, the base station 600 may include one or more radio frequency units, such as a remote radio frequency unit (remote radio unit, RRU) 610 and one or more baseband units (BBU) (also referred to as a Distributed Unit (DU)) 620. The RRU 610 may be referred to as a transceiver unit, corresponding to the transceiver unit 420 in fig. 4. Alternatively, the RRU 610 may also be referred to as a transceiver, transceiving circuitry, or transceiver, etc., which may include at least one antenna 611 and a radio frequency unit 612. Alternatively, the RRU 610 may include a receiving unit, which may correspond to a receiver (or receiver, receiving circuit), and a transmitting unit, which may correspond to a transmitter (or transmitter, transmitting circuit). The RRU 610 is mainly configured to receive and transmit radio frequency signals and convert radio frequency signals to baseband signals, for example, to send configuration information to a terminal device. The BBU 620 is mainly configured to perform baseband processing, control a base station, and the like. The RRU 610 and BBU 620 may be physically located together or physically separate, i.e., distributed base stations.

The BBU 620 is a control center of the base station, and may also be referred to as a processing unit, and may correspond to the processing unit 410 in fig. 4, and is mainly configured to perform baseband processing functions, such as channel coding, multiplexing, modulation, spreading, and so on. For example, the BBU (processing unit) may be configured to control the base station to perform the operation procedure in the above-described method embodiment with respect to the access network device.

In one example, the BBU 620 may be configured by one or more single boards, where the multiple single boards may support radio access networks of a single access system (such as an LTE network), or may support radio access networks of different access systems (such as an LTE network, a 5G network, or other networks). The BBU 620 further comprises a memory 621 and a processor 622. The memory 621 is used to store necessary instructions and data. The processor 622 is configured to control the base station to perform necessary actions, for example, to control the base station to perform the operation procedure related to the access network device in the above-described method embodiment. The memory 621 and processor 622 may serve one or more boards. That is, the memory and the processor may be separately provided on each board. It is also possible that multiple boards share the same memory and processor. In addition, each single board can be provided with necessary circuits.

It should be appreciated that the base station 600 shown in fig. 6 is capable of implementing the various procedures involving the access network device in the method embodiment shown in fig. 3. The operations and/or functions of the respective modules in the base station 600 are respectively for implementing the respective flows in the above-described method embodiments. Reference is specifically made to the description in the above method embodiments, and detailed descriptions are omitted here as appropriate to avoid repetition.

The BBU 620 described above may be used to perform the actions described in the previous method embodiments as being implemented internally by the access network device, while the RRU 610 may be used to perform the actions described in the previous method embodiments as being sent to or received from the terminal device by the access network device. Please refer to the description of the foregoing method embodiments, and details are not repeated herein.

Fig. 7 is a schematic structural diagram of a terminal device provided in an embodiment of the present application. The terminal device 700 has the functions of the terminal device in the embodiment shown in fig. 3. As shown in fig. 7, the terminal device 700 includes a processor 701 and a transceiver 702. Optionally, the terminal device 700 further comprises a memory 703. Wherein the processor 701, the transceiver 702 and the memory 703 can communicate with each other via an internal connection path for transmitting control and/or data signals, the memory 703 is used for storing a computer program, and the processor 701 is used for calling and running the computer program from the memory 703 to control the transceiver 702 to transmit and receive signals. Optionally, the terminal device 700 may further include an antenna 704 for transmitting uplink data or uplink control signaling output by the transceiver 702 through a wireless signal. Optionally, the terminal device 700 further comprises a Wi-Fi module 711 for accessing the wireless network.

The processor 701 and the memory 703 may be combined into a single processing device, and the processor 701 is configured to execute the program code stored in the memory 703 to implement the functions. In particular, the memory 703 may also be integrated into the processor 701 or may be separate from the processor 701. The processor 701 may correspond to the processing unit 410 in fig. 4 or the processor 510 in fig. 5.

The transceiver 702 may correspond to the transceiver unit 420 of fig. 4 or the communication interface 520 of fig. 5. The transceiver 702 may include a receiver (or receiver, receiving circuitry) and a transmitter (or transmitter, transmitting circuitry). Wherein the receiver is for receiving signals and the transmitter is for transmitting signals.

Optionally, the terminal device 700 may further comprise a power supply 705 for providing power to various devices or circuits in the terminal device 700.

In addition to this, the terminal device 700 may further comprise one or more of an input unit 706, a display unit 707, audio circuitry 708, which may further comprise a speaker 708a, a microphone 708b, etc., a camera 709, a sensor 710, etc., in order to make the functionality of the terminal device more complete.

It will be appreciated that the terminal device 700 shown in fig. 7 is capable of carrying out the various processes involving the terminal device in the method embodiment shown in fig. 3. The operations and/or functions of the respective modules in the terminal device 700 are respectively for implementing the corresponding flows in the above-described method embodiments. Reference is specifically made to the description in the above method embodiments, and detailed descriptions are omitted here as appropriate to avoid repetition.

When the terminal device 700 is used to perform the operation flow related to the terminal device in the above method embodiment, the processor 701 may be used to perform the actions described in the previous method embodiment as being implemented inside the terminal device, and the transceiver 702 may be used to perform the actions described in the previous method embodiment as being transmitted to or received from the access network device by the terminal device. Please refer to the description of the foregoing method embodiments, and details are not repeated herein.

The embodiment of the application also provides a communication system which comprises the terminal equipment and the access network equipment.

The present application also provides a computer program product comprising: a computer program (which may also be referred to as code, or instructions) which, when executed, causes a computer to perform the method performed by the terminal device, or the method performed by the access network device, in the embodiment shown in fig. 3.

The present application also provides a computer-readable storage medium storing a computer program (which may also be referred to as code, or instructions). The computer program, when executed, causes the computer to perform the method performed by the terminal device, or the method performed by the access network device, in the embodiment shown in fig. 3.

It should be appreciated that the processor in the embodiments of the present application may be an integrated circuit chip with signal processing capabilities. In implementation, the steps of the above method embodiments may be implemented by integrated logic circuits of hardware in a processor or instructions in software form. The processor may be a general purpose processor, a digital signal processor (digital signal processor, DSP), an application specific integrated circuit (application specific integrated circuit, ASIC), a field programmable gate array (field programmable gate array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in hardware, in a decoded processor, or in a combination of hardware and software modules in a decoded processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method.

It should also be appreciated that the memory in embodiments of the present application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. The volatile memory may be random access memory (random access memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and direct memory bus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

The terms "unit," "module," and the like as used in this specification may be used to refer to a computer-related entity, either hardware, firmware, a combination of hardware and software, or software in execution. The units and modules in the embodiment of the application have the same meaning and can be used in a crossed manner.

Those of ordinary skill in the art will appreciate that the various illustrative logical blocks (illustrative logical block) and steps (steps) described in connection with the embodiments disclosed herein can be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application. In the several embodiments provided in this application, it should be understood that the disclosed apparatus, device, and method may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or 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 each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

In the above-described embodiments, the functions of the respective functional units may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions (programs). When the computer program instructions (program) are loaded and executed on a computer, the processes or functions described in accordance with the embodiments of the present application are fully 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, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). 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 an integration of one or more available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a digital versatile disk (digital video disc, DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), or the like.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk, etc.

The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method for transmitting uplink data, which is applied to a terminal device, where the terminal device is in a deactivated state, the method comprising:

receiving a first message from access network equipment, wherein the first message indicates the terminal equipment to enter a deactivated state, and the first message contains configuration information for configuring authorized small data transmission CG-SDT;

acquiring configuration information of a measurement object MO and corresponding reference signal RS configuration information thereof, wherein the configuration information of the MO and the corresponding RS configuration information thereof are used for determining downlink path loss, the downlink path loss is used for timing advance TA verification, the RS configuration information is used for indicating resources for receiving RS, and the configuration information of the MO comprises RS used for measurement;

and sending uplink data based on the configuration information of the CG-SDT under the condition that TA verification is successful.

2. The method of claim 1, wherein the configuration information of the MO and its corresponding RS configuration information are carried in the first message; the method comprises the steps of,

the obtaining the configuration information of the MO and the RS configuration information corresponding to the MO includes:

and acquiring the configuration information of the MO and the corresponding RS configuration information of the MO from the first message.

3. The method of claim 1, wherein the obtaining the configuration information of the MO and the RS configuration information corresponding thereto comprises:

and acquiring the configuration information of the MO and the corresponding RS configuration information of the MO from the access layer context of the terminal equipment.

4. A method as claimed in claim 3, wherein the first message is a first message received for the first time after the terminal device enters a deactivated state from a connected state, and the configuration information of the MO and its corresponding RS configuration information are used to determine a downlink path loss each time the first message from the access network device is received.

5. The method of claim 3, wherein when the terminal device receives the first message from the access network device again and the first message is a message in response to the CG-SDT, the method further comprises:

and acquiring the configuration information of the MO and the corresponding RS configuration information from the access layer context of the terminal equipment, wherein the configuration information of the MO and the corresponding RS configuration information are used for determining the downlink path loss at this time.

6. The method of claim 5, wherein the method further comprises:

And after the MO is measured, deleting the configuration information of the MO and the corresponding RS configuration information of the MO.

7. The method according to any of claims 1 to 6, wherein the first message is a message for releasing a radio resource control, RRC, connection.

8. A method for transmitting uplink data, which is applied to an access network device, the method comprising:

a first message is sent to a terminal device in a deactivation state, the first message indicates the terminal device to enter the deactivation state, the first message contains configuration information of configuration authorization small data transmission CG-SDT, configuration information of a measurement object MO and corresponding reference signal RS configuration information, the configuration information of the MO and the corresponding RS configuration information are used for determining downlink path loss, the downlink path loss is used for timing advance TA verification, the RS configuration information is used for indicating the terminal device to receive resources of RS, and the configuration information of the MO comprises RS used for measurement;

and receiving uplink data from the terminal equipment, wherein the uplink data is sent by the terminal equipment based on the CG-SDT configuration information under the condition that TA verification is successful.

9. The method of claim 8, wherein the first message is a message for releasing a radio resource control, RRC, connection.

10. A communication device, wherein the device is in a deactivated state, the device comprising:

a receiving unit, configured to receive a first message from an access network device, where the first message indicates the apparatus to enter a deactivated state, and the first message includes configuration information for configuring and authorizing small data transmission CG-SDT;

the processing unit is used for acquiring configuration information of a measurement object MO and corresponding reference signal RS configuration information thereof, wherein the configuration information of the MO and the corresponding RS configuration information thereof are used for determining downlink path loss, the downlink path loss is used for timing advance TA verification, the RS configuration information is used for indicating resources for receiving RS, and the configuration information of the MO comprises RS used for measurement;

and the sending unit is used for sending uplink data based on the configuration information of the CG-SDT under the condition that TA verification is successful.

11. The apparatus of claim 10, wherein configuration information of the MO and its corresponding RS configuration information are carried in the first message; the method comprises the steps of,

The processing unit is specifically configured to obtain the configuration information of the MO and the RS configuration information corresponding to the MO from the first message.

12. The apparatus of claim 10, wherein the processing unit is specifically configured to obtain configuration information of the MO and its corresponding RS configuration information from an access stratum context of the apparatus.

13. The apparatus of claim 12, wherein the first message is a first message received a first time after the apparatus enters a deactivated state from a connected state, configuration information of the MO and its corresponding RS configuration information are used to determine a downlink path loss each time the first message is received from the access network device.

14. The apparatus of claim 12, wherein the processing unit is further configured to acquire configuration information of the MO and its corresponding RS configuration information from an access layer context of the apparatus again when the apparatus receives the first message from the access network device again and the first message is a message in response to the CG-SDT, the configuration information of the MO and its corresponding RS configuration information being used to determine a downlink path loss this time.

15. The apparatus of claim 14, wherein the processing unit is further configured to delete configuration information of the MO and its corresponding RS configuration information after measuring the MO.

16. The apparatus according to any of claims 10 to 15, wherein the first message is a message for releasing a radio resource control, RRC, connection.

17. A communication device, comprising:

a sending unit, configured to send a first message to a terminal device in a deactivated state, where the first message indicates that the terminal device enters the deactivated state, where the first message includes configuration information for configuring authorized small data transmission CG-SDT, configuration information for a measurement object MO, and corresponding reference signal RS configuration information, where the configuration information for the MO and the corresponding RS configuration information are used to determine downlink path loss, where the downlink path loss is used to perform timing advance TA verification, and the RS configuration information is used to indicate resources for the terminal device to receive RS, and the configuration information for the MO includes RS used for measurement;

and the receiving unit is used for receiving uplink data from the terminal equipment, wherein the uplink data is sent by the terminal equipment based on the configuration information of the CG-SDT under the condition that TA verification is successful.

18. The apparatus of claim 17, wherein the first message is a message for releasing a radio resource control, RRC, connection.

19. A communication device comprising a processor and a memory, wherein,

the memory is used for storing a computer program;

the processor is configured to invoke the computer program to cause the communication device to perform the method of any of claims 1 to 7 or to cause the communication device to perform the method of claim 8 or 9.

20. A computer readable storage medium, characterized in that the storage medium has stored therein a computer program or instructions which, when executed by a computer, implement the method of any one of claims 1 to 7, or the method of claim 8 or 9.

21. A computer program product comprising instructions which, when executed by a computer, implement the method of any one of claims 1 to 7, or the method of claim 8 or 9.