CN116170849A - Data transmission method and related device - Google Patents

Data transmission method and related device Download PDF

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Publication number
CN116170849A
CN116170849A CN202111403445.0A CN202111403445A CN116170849A CN 116170849 A CN116170849 A CN 116170849A CN 202111403445 A CN202111403445 A CN 202111403445A CN 116170849 A CN116170849 A CN 116170849A
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CN
China
Prior art keywords
relay node
state
uplink data
connection
terminal device
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Pending
Application number
CN202111403445.0A
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Chinese (zh)
Inventor
刘星
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Spreadtrum Communications Shanghai Co Ltd
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Spreadtrum Communications Shanghai Co Ltd
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Application filed by Spreadtrum Communications Shanghai Co Ltd filed Critical Spreadtrum Communications Shanghai Co Ltd
Priority to CN202111403445.0A priority Critical patent/CN116170849A/en
Priority to PCT/CN2022/130270 priority patent/WO2023093509A1/en
Publication of CN116170849A publication Critical patent/CN116170849A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes
    • H04W36/18—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
    • H04W40/22—Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

The embodiment of the application discloses a data transmission method and a related device. The method is applied to terminal equipment switched to the relay node, and comprises the following steps: the terminal equipment establishes connection with the relay node; and the terminal equipment sends uplink data to the relay node under the condition that the Radio Resource Control (RRC) state between the relay node and the network equipment is a connection state. Therefore, in the process of switching the terminal equipment to the relay node, after the terminal equipment establishes connection with the relay node and under the condition that the RRC state between the relay node and the network equipment is in a connection state, uplink data can be timely sent to the relay node, and the continuity of communication in the process of switching the terminal equipment to the relay node can be ensured.

Description

Data transmission method and related device
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to a data transmission method and a related device.
Background
When a terminal device in a radio resource control (radio resource control, RRC) connected state moves from the coverage of one base station to the coverage of another base station, the terminal device needs to perform a cell handover procedure. Similarly, when the terminal device in the RRC connected state moves from the coverage of one base station to the coverage of one relay node, or from the coverage of one relay node to the coverage of another relay node, the terminal device also needs to perform a procedure of switching to the relay node.
In the fifth generation (5th Generation,5G) communication system, when the terminal device performs handover with the base station, the terminal device may not disconnect the connection with the source base station, and initiate a connection establishment procedure with the target base station, until the terminal device completes a random access procedure with the target base station, the terminal device may not stop data interaction with the source base station, and start sending uplink data to the target base station.
However, when the terminal device switches to one relay node, the terminal device cannot know when to start sending uplink data because a random access process is not required to be initiated to the relay node in the switching process between the terminal device and the relay node.
Disclosure of Invention
The embodiment of the application provides a data transmission method and a related device, which can ensure the communication continuity in the switching process of terminal equipment to a relay node.
In a first aspect, an embodiment of the present application provides a data transmission method, where the method is applied to a terminal device that is switched to a relay node. The method comprises the following steps: the terminal equipment establishes connection with the relay node; and the terminal equipment sends uplink data to the relay node under the condition that the Radio Resource Control (RRC) state between the relay node and the network equipment is a connection state.
Therefore, in the process of switching the terminal equipment to the relay node, after the terminal equipment establishes connection with the relay node and under the condition that the RRC state between the relay node and the network equipment is in a connection state, uplink data can be timely sent to the relay node, and the continuity of communication in the process of switching the terminal equipment to the relay node can be ensured.
In an optional implementation manner, the terminal device may further send uplink data to the relay node under the condition that an RRC state between the relay node and the network device is in an idle state or inactive state, and the first indication information from the relay node is received. The first indication information is used for indicating that the relay node is successful in random access, and/or the relay node receives radio bearer configuration information of the terminal equipment.
After the terminal device establishes connection with the relay node, the uplink data is sent to the relay node under the condition that the RRC state between the relay node and the network device is in an idle state or an inactive state or the relay node can be determined to communicate with the network device. Thereby, the communication continuity in the process of switching the terminal equipment to the relay node can be ensured.
In an alternative embodiment, the RRC state is determined by the terminal device based on the second indication information from the relay node. The second indication information is used for indicating that the RRC state between the relay node and the network equipment is in a connection state, or in an idle state or in an inactive state.
The terminal device determines the RRC state between the relay node and the network device according to the second indication information sent by the relay node to the terminal device.
In an optional implementation manner, the sending, by the terminal device, uplink data to the relay node includes: the terminal equipment submits uplink data to a Radio Link Control (RLC) entity through a Packet Data Convergence Protocol (PDCP) entity, wherein the RLC entity is an RLC entity associated with a relay node in the terminal equipment; and the terminal equipment sends uplink data through the RLC entity.
That is, the terminal device transmits uplink data to the relay node through the RLC entity for transmitting uplink data to the relay node.
In an alternative embodiment, the connection between the terminal device and the relay node is established, including: when receiving a direct link establishment receiving message from the relay node, the terminal equipment determines to establish connection with the relay node.
In a second aspect, embodiments of the present application provide a communication apparatus, including:
a connection establishment unit for establishing connection with the relay node;
and the uplink data sending unit is used for sending uplink data to the relay node under the condition that the Radio Resource Control (RRC) state between the relay node and the network equipment is in a connection state.
In addition, in this aspect, other optional embodiments of the communication device may be referred to in the relevant content of the first aspect, which is not described in detail herein.
In a third aspect, an embodiment of the present application provides a terminal device, including:
a memory for storing a computer program;
a processor invoking a computer program for performing the operations of:
establishing connection with a relay node;
and sending uplink data to the relay node under the condition that the Radio Resource Control (RRC) state between the relay node and the network equipment is in a connection state.
In addition, in this aspect, other optional embodiments of the terminal device may be referred to in the relevant content of the first aspect, which is not described in detail herein.
In a fourth aspect, embodiments of the present application provide a chip, the chip including: a processor, a memory and a computer program or instructions stored on the memory, wherein the processor executes the computer program or instructions to implement the steps in the method designed in the first aspect.
In a fifth aspect, embodiments of the present application provide a module apparatus, the module apparatus including a communication module, a power module, a storage module, and a chip module, wherein:
the power supply module is used for providing electric energy for the module equipment;
the storage module is used for storing data and instructions;
the communication module is used for carrying out internal communication of module equipment or carrying out communication between the module equipment and external equipment;
the chip module is used for:
establishing connection with a relay node;
and sending uplink data to the relay node under the condition that the Radio Resource Control (RRC) state between the relay node and the network equipment is in a connection state.
In addition, in this aspect, other optional embodiments of the module device may be referred to in the related content of the first aspect, which is not described in detail herein.
A sixth aspect is a computer readable storage medium, characterized in that the computer readable storage medium stores a computer program comprising program instructions which, when executed by a processor, cause the processor to perform a program according to any of the methods of the first aspect.
A seventh aspect is a computer program product comprising computer instructions which, when run on a computer, cause the method of any of the first aspects above.
Drawings
Fig. 1 is a schematic system structure of a communication system according to an embodiment of the present application;
fig. 2 (a) is a schematic diagram of a scenario in which a terminal device needs to perform handover according to an embodiment of the present application;
fig. 2 (b) is a schematic diagram of a scenario in which another terminal device provided in an embodiment of the present application needs to perform handover;
fig. 2 (c) is a schematic diagram of a scenario in which a terminal device needs to perform handover according to another embodiment of the present application;
fig. 2 (d) is a schematic diagram of a scenario in which a terminal device needs to perform handover according to another embodiment of the present application;
fig. 2 (e) is a schematic diagram of a scenario in which a terminal device needs to perform handover according to another embodiment of the present application;
fig. 3 is a flow chart of a data transmission method according to an embodiment of the present application;
fig. 4 is a schematic diagram of a terminal device provided in an embodiment of the present application;
fig. 5 is a flow chart of another data transmission method according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of a communication device according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of a terminal device according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of a module device according to an embodiment of the present application.
Detailed Description
Embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application.
The communication system according to the embodiment of the present application is shown in fig. 1, and the communication system may include, but is not limited to, one network device, one relay node, and one terminal device, and the number and form of devices shown in fig. 1 are used for illustration and not to limit the embodiment of the present application, and in practical application, may include more than one network device, more than two relay nodes, and more than two terminal devices. The communication system shown in fig. 1 is illustrated by taking one network device 101, one relay node 102, and one terminal device 103 as an example, the network device 101 may provide network services to the relay node 102 and the terminal device 103, and the terminal device 103 may communicate with the network device 101 through the relay node 102. The relay node 102 may be a different terminal device than the terminal device 103.
The present application is applicable to the fifth generation (5th Generation,5G) communication system, the fourth generation (4th Generation,4G) communication system, the third generation (3th Generation,3G) communication system, and various communication systems that are new in the future, such as the sixth generation (6th Generation,6G) communication system, the seventh generation (7th Generation,7G) communication system, and the like, and the embodiment of the present application is not limited thereto.
The present application is also applicable to different network architectures including, but not limited to, relay network architectures, dual link architectures, vehicle-to-Device (V2X) architectures, device-to-Device (D2D) architectures, etc.
The network device in the embodiment of the application comprises a base station and a base station controller of an access network, and can also comprise terminal equipment.
A Base Station (BS), which may also be referred to as a base station device, in an embodiment of the present application is an apparatus deployed in a radio access network (wireless access network, RAN) to provide a wireless communication function. For example, the devices providing base station functionality in the second generation mobile communications (2th generation mobile communication,2G) network include base transceiver stations (base transceiver station, BTSs). The apparatus for providing a base station function in the 3G network includes a node B (NodeB). The apparatus for providing a base station function in a 4G network includes an evolved NodeB (eNB). In a wireless local area network (Wireless Local Area Networks, WLAN), a device providing a base station function is an Access Point (AP). A device gNB providing a base station function in a New wireless (NR) of 5G, and a node B (ng-eNB) continuing evolution, wherein the gNB and the terminal device communicate by using NR technology, the ng-eNB and the terminal communicate by using evolved universal terrestrial Radio access (evolved universal terrestrial Radio access, E-UTRA) technology, and the gNB and the ng-eNB are both connectable to a 5G core network. The base station in the embodiment of the present application also includes a device or the like that provides a base station function in a new communication system in the future.
The base station controller in the embodiment of the present application may also be referred to as a base station controller device, and is a device for managing a base station. For example, a base station controller (base station controller, BSC) in a 2G network, a radio network controller (radio network controller, RNC) in a 3G network, and a means for controlling and managing base stations in a new communication system in the future.
The terminal device in the embodiments of the present application may also be referred to as a terminal, and may refer to various types of User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a Mobile Station (MS), a remote 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 also be a cellular telephone, a cordless telephone, a session initiation protocol (session initiation protocol, SIP) phone, a wireless local loop (wireless local loop, WLL) station, a personal digital assistant (personal digital assistant, PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a 5G network or a terminal device in a future evolved public land mobile network (public land mobile network, PLMN), etc., as the embodiments of the application are not limited in this regard.
As shown in fig. 1 described above, when the relay node 102 and the network device 101 communicate, the link between the two is referred to as Uplink (UL) or Downlink (DL), and the interface thereof is referred to as uu interface. When the relay node 102 communicates with the terminal device 103, the link between the two is referred to as a Sidelink (SL), and the interface thereof is referred to as a PC5 interface.
The terminal device is mobile. Therefore, as shown in fig. 2 (a), when a terminal device in a radio resource control (radio resource control, RRC) connected state moves from the coverage of one network device to the coverage of another network device, the terminal device needs to perform a cell handover procedure. Similarly, as shown in fig. 2 (b), when the terminal device moves from the coverage area of one network device to the coverage area of the relay node of the cell where the network device is located; or, as shown in fig. 2 (c), when the terminal node moves from the coverage of one relay node to the coverage of another relay node of the cell where the same network device is located; or, as shown in fig. 2 (d), when the terminal device moves from the coverage of the relay node of the cell in which one network device is located to the coverage of the relay node of the cell in which the other network device is located; alternatively, as shown in fig. 2 (e), when the terminal device moves from the coverage area of one network device to the coverage area of the relay node of the cell of another network device, the terminal device needs to perform a handover procedure.
In a 5G communication system, when a terminal device switches to a target network device, a dual-activation protocol stack (dual active protocol stack, DAPS) switching mechanism is used to switch to the target network device in order to ensure the continuity of communication. That is, when the terminal device performs handover with the target network device, the terminal device may not disconnect the connection with the source network device, and initiate a connection establishment procedure with the target network device, until the terminal device completes a random access procedure with the target network device, the terminal device may stop data interaction with the source network device, and start sending uplink data to the target network device. It can be appreciated that the point in time when the terminal device transmits uplink data to the target network device is referred to as the point in time of uplink data switching (UL data switch).
However, in the process that the terminal equipment adopts the DAPS switching mechanism to switch to the relay node, the random access process does not need to be initiated to the relay node, so that the terminal equipment cannot directly take the time point when the random access process is completed as the time point for sending uplink data to the relay node.
The embodiment of the application provides a data transmission method 100. In the method, a terminal device establishes connection with a relay node; and the terminal equipment sends uplink data to the relay node under the condition that the Radio Resource Control (RRC) state between the relay node and the network equipment is a connection state. Therefore, in the process of switching the terminal equipment to the relay node, after the terminal equipment establishes connection with the relay node and under the condition that the RRC state between the relay node and the network equipment is in a connection state, uplink data can be timely sent to the relay node, and the continuity of communication in the process of switching the terminal equipment to the relay node can be ensured.
The embodiment of the application also provides a data transmission method 200. In the method, a terminal device establishes a connection with a relay node. The terminal equipment sends uplink data to the relay node under the condition that the RRC state between the relay node and the network equipment is a connection state; and sending uplink data to the relay node under the condition that the RRC state is in an idle state or a non-activated state and the first indication information from the relay node is received. The first indication information is used for indicating that the relay node is successful in random access, and/or the relay node receives radio bearer configuration information of the terminal equipment.
After the terminal equipment and the relay node are connected, uplink data can be timely sent to the relay node under the condition that the RRC state between the relay node and the network equipment is the connection state; after the terminal device establishes connection with the relay node, when the RRC state between the relay node and the network device is in an idle state or a non-activated state, uplink data is sent to the relay node under the condition that the relay node is determined to be capable of communicating with the network device. Therefore, the method can ensure the communication continuity in the process of switching the terminal equipment to the relay node.
Based on the above description, the embodiment of the present application proposes a data transmission method 100 as shown in fig. 3, where the method is applied to a terminal device that is handed over to a relay node, and the method may include S301-S302:
s101, connection between the terminal equipment and the relay node is established.
It can be understood that, in the communication scenarios shown in fig. 2 (b), fig. 2 (c), fig. 2 (d), and fig. 2 (e), the terminal device moves to the coverage area of the relay node, so that handover needs to be performed to the relay node. And then the terminal equipment and the relay node are connected, namely, the PC5 connection is established between the terminal equipment and the relay node through a side uplink.
In an alternative embodiment, the connection between the terminal device and the relay node is established, including: the terminal device determines to establish a connection with the relay node upon receiving a direct link establishment reception (directcommunication accept) message from the relay node. That is, when the terminal device receives the directcommunication accept message from the relay node, it is determined that the PC5 connection establishment with the relay node is completed.
S102, the terminal equipment sends uplink data to the relay node under the condition that the Radio Resource Control (RRC) state between the relay node and the network equipment is a connection state.
It can be appreciated that before the terminal device sends uplink data to the relay node, the RRC state between the relay node and the network device needs to be determined, so as to know whether the relay node and the network device can perform communication.
In an alternative embodiment, the terminal device further receives second indication information from the relay node, where the second indication information is used to indicate that an RRC state between the relay node and the network device is a connected state, or an idle state, or an inactive state. Thus, the terminal device determines the RRC state between the relay node and the network device based on the second indication information.
In an alternative embodiment, the second indication information is carried in the discovery signal. The discovery signal is broadcast by the relay node to a plurality of terminal devices and is used by the terminal devices to determine whether the terminal device moves into the coverage area of the relay node. And the terminal equipment determines whether a switching process needs to be executed to the relay node according to the discovery signal.
Optionally, the second indication information is sent by the relay node to the terminal device separately. The embodiments of the present application are not limited in this regard.
The terminal device can determine the RRC state between the relay node and the network device through the indication of the relay node, so that the terminal device can determine the time point of sending the uplink data to the relay node according to the RRC state between the relay node and the network device.
As can be appreciated, the terminal device sending uplink data to the relay node means: the terminal device performs uplink data conversion. That is, the terminal device performs uplink data conversion when determining that the PC5 connection with the relay node is established, and when the RRC state between the relay node and the network device is a connected state.
The terminal device sends uplink data to the relay node, including: the terminal device delivers the uplink data to a radio link control (radio link control, RLC) entity through a packet data convergence protocol (packet data convergence protocol, PDCP) entity; and the terminal equipment sends uplink data through the RLC entity. The RLC entity is an RLC entity associated with the relay node in the terminal device, that is, an RLC entity in the terminal device for transmitting uplink data to the relay node.
As shown in fig. 4, when the terminal device switches to the relay node by using the DAPS switching mechanism, there is a PDCP entity in the terminal device, an RLC entity for transmitting uplink data to the source network device or the source relay node, an RLC entity for transmitting uplink data to the switched relay node, and medium access control (Media Access Control, MAC) and Physical (PHY) entities respectively connected to the two RLC entities. Thus, when the RRC state is a connected state, the terminal device sends uplink data to the relay node, which means: the terminal device stops delivering the uplink data to the RLC entity for transmitting the uplink data to the source network device or the source relay node, and delivers the uplink data to the RLC entity for transmitting the uplink data to the relay node, so that the terminal device transmits the uplink data to the relay node through the RLC entity.
Under the condition that the communication state between the relay node and the network equipment is a connection state, the condition indicates that the relay node and the network equipment can communicate, so that after the terminal equipment establishes connection with the relay node, the terminal equipment stops sending uplink data to the source network equipment or the source relay node and sends the uplink data to the switched relay node, the relay node can forward the uplink data to the network equipment, and further, the communication continuity of the terminal equipment in the switching process of the relay node can be ensured.
In the embodiment of the application, after the terminal device establishes connection with the relay node and under the condition that the RRC state between the relay node and the network device is in a connection state, uplink data can be sent to the relay node in time in the process of switching the terminal device to the relay node, so that the continuity of communication in the process of switching the terminal device to the relay node can be ensured.
The embodiment of the application proposes a data transmission method 200 as shown in fig. 5, where the method is applied to a terminal device switched to a relay node, and the method may include S201-S203:
s201, the terminal equipment establishes connection with the relay node.
S202, the terminal equipment sends uplink data to the relay node under the condition that the Radio Resource Control (RRC) state between the relay node and the network equipment is a connection state.
The implementation of S201 and S202 may be referred to the above description of S101 and S102, and will not be repeated here.
S203, the terminal equipment sends uplink data to the relay node under the conditions that the RRC state is in an idle state or a non-activated state and first indication information from the relay node is received. The first indication information is used for indicating that the relay node is successful in random access and/or the relay node receives radio bearer configuration information of the terminal equipment.
In an alternative embodiment, in the process of establishing connection between the terminal device and the relay node, if the RRC state between the relay node and the network device is an idle state or an inactive state, the relay node initiates random access to the network device to establish connection with the network device.
And when the relay node is successful in random access or receives the radio bearer configuration information of the terminal equipment, the relay node sends first indication information to the terminal equipment, and the relay node is indicated to be successful in random access through the first indication information and/or receives the radio bearer configuration information of the terminal equipment. The terminal device can know that the communication connection between the relay node and the network device is established through the first indication information. Therefore, after the terminal equipment establishes connection with the relay node and receives the first indication information from the relay node, the terminal equipment can send uplink data to the relay node. And the relay node forwards the uplink data to the network device.
It can be understood that the radio bearer configuration information of the terminal device includes configuration information such as a bearer or a channel mapping relationship. The radio bearer configuration information is used for communication between the relay node and the terminal device. The radio bearer configuration information may also be used for forwarding data of the terminal device between the relay node and the network device.
In this manner, the terminal device determines that the communication connection between the relay node and the network device is in an idle state or an inactive state, and does not transmit uplink data to the relay node even if the connection with the relay node is established. And the terminal equipment determines the connection establishment condition between the relay node and the network equipment and then sends uplink data to the relay node so as to ensure that the relay node can forward the uplink data of the terminal equipment to the network equipment in real time, thereby ensuring the communication continuity in the switching process of the terminal equipment to the relay node.
The embodiment of sending the uplink data to the relay node by the terminal device may be referred to in S103, and will not be described again.
It can be seen that, in the embodiment of the present application, after the terminal device establishes a connection with the relay node, uplink data may be timely sent to the relay node under the condition that the RRC state between the relay node and the network device is a connection state; after the terminal device establishes connection with the relay node, when the RRC state between the relay node and the network device is in an idle state or a non-activated state, uplink data is sent to the relay node under the condition that the relay node is determined to be capable of communicating with the network device. Therefore, the method can ensure the communication continuity in the process of switching the terminal equipment to the relay node.
Referring to fig. 6, fig. 6 is a schematic structural diagram of a communication device according to an embodiment of the present invention, where the communication device is used in a terminal device. The communication apparatus 600 may include:
a connection establishment unit 601, configured to establish a connection with a relay node;
an uplink data sending unit 602, configured to send uplink data to the relay node under a condition that a radio resource control RRC state between the relay node and the network device is a connected state.
In an alternative embodiment, the uplink data sending unit 602 is further configured to:
sending uplink data to the relay node under the conditions that the RRC state is in an idle state or a non-activated state and first indication information from the relay node is received;
the first indication information is used for indicating that the relay node is successful in random access, and/or the relay node receives radio bearer configuration information of the device.
In an alternative embodiment, the communication device 600 further comprises a receiving unit 603, where the receiving unit 603 is configured to: receiving second indication information from the relay node; the second indication information is used for indicating that the Radio Resource Control (RRC) state between the relay node and the network equipment is in a connection state, or in an idle state or in an inactive state.
In an optional implementation manner, the uplink data sending unit 602 is configured to send uplink data to the relay node, specifically:
delivering uplink data to a Radio Link Control (RLC) entity through a Packet Data Convergence Protocol (PDCP) entity, wherein the RLC entity is an RLC entity associated with the relay node in the terminal equipment;
and sending uplink data through the RLC entity.
In an alternative embodiment, the connection establishment unit 601 is configured to establish a connection with a relay node, specifically:
and when receiving a direct link establishment receiving message from the relay node, determining to establish connection with the relay node.
The technical effects brought by the embodiments of the present application and the embodiments of the above method are the same based on the same conception, and the specific principle is referred to the description of the embodiments of the above method, and is not repeated here.
Referring to fig. 7, fig. 7 is a schematic structural diagram of a terminal device according to an embodiment of the present application. The terminal device 700 comprises a processor 701, a transceiver 702 and a memory 703. The processor 701 and the memory 703 are connected by one or more communication buses.
Wherein the transceiver 702 is used to transmit data or receive data. The memory 703 is used for storing commands or computer programs, and the memory 703 may include read only memory and random access memory, and provides commands and data to the processor 701. A portion of the memory 703 may also include non-volatile random access memory.
The processor 701 may be a central processing unit (Central Processing Unit, CPU), and the processor 701 may 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 arrays (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor, but in the alternative, the processor 701 may be any conventional processor or the like.
The terminal device 700 may be a terminal in the above-described method embodiment, and the processor 701 may be configured to execute a computer program or a command stored in the memory 703, so that the terminal device 700 performs:
establishing connection with a relay node;
and sending uplink data to the relay node under the condition that the Radio Resource Control (RRC) state between the relay node and the network equipment is in a connection state.
The technical effects brought by the embodiments of the present application and the embodiments of the above method are the same based on the same conception, and the specific principle is referred to the description of the embodiments of the above method, and is not repeated here.
Referring to fig. 8, fig. 8 is a schematic structural diagram of a module device according to an embodiment of the present application. The module apparatus 800 includes a communication module 801, a power module 802, a memory module 803, and a chip module 804, wherein: the power supply module is used for providing electric energy for the module equipment; the storage module is used for storing data and commands; the communication module is used for carrying out internal communication of module equipment or carrying out communication between the module equipment and external equipment;
the chip module 804 is configured to:
establishing connection with a relay node;
and sending uplink data to the relay node under the condition that the Radio Resource Control (RRC) state between the relay node and the network equipment is in a connection state.
Other implementations of the modular device can be found in the context of the method embodiments described above. And will not be described in detail herein.
The technical effects brought by the embodiments of the present application and the embodiments of the above method are the same based on the same conception, and the specific principle is referred to the description of the embodiments of the above method, and is not repeated here.
The embodiment of the application also provides a chip, which comprises: a processor, a memory and a computer program or instructions stored on the memory, wherein the processor executes the computer program or instructions to implement the steps described in the method embodiments above.
The present application also provides a computer-readable storage medium storing a computer program or instructions that, when executed, implement the steps described in the method embodiments above.
Embodiments of the present application also provide a computer program product comprising a computer program or instructions which, when executed, implement the steps described in the method embodiments above.
The respective devices and products described in the above embodiments include modules/units, which may be software modules/units, or may be hardware modules/units, or may be partly software modules/units, or partly hardware modules/units. For example, for each device of the application or the integrated chip, each module/unit contained in the product may be implemented in hardware such as a circuit, or at least part of the modules/units may be implemented in software program, where the modules/units run on an integrated processor inside the chip, and the rest of the modules/units may be implemented in hardware such as a circuit; for each device and product corresponding to or integrated with the chip module, each module/unit contained in the device and product can be realized in a hardware mode such as a circuit, different modules/units can be located in the same piece (such as a chip, a circuit module and the like) or different components of the chip module, at least part of the modules/units can be realized in a software program, and the software program runs in the rest of modules/units of the integrated processor in the chip module and can be realized in a hardware mode such as a circuit; for each device or product of the terminal, the included modules/units may be implemented in hardware such as a circuit, different modules/units may be located in the same component (for example, a chip, a circuit module, etc.) or different components in the terminal, or at least part of the modules/units may be implemented in a software program, where the sequence runs on a processor integrated in the terminal, and the remaining sub-modules/units may be implemented in hardware such as a circuit.
The steps of a method or algorithm described in the embodiments of the present application may be implemented in hardware, or may be implemented by executing software instructions by a processor. The software instructions may be comprised of corresponding software modules that may be stored in random access memory (random access memory, RAM), flash memory, read-only memory (ROM), erasable programmable read-only memory (erasable programmable ROM), electrically erasable programmable read-only memory (EEPROM), registers, hard disk, a removable disk, a compact disc read-only memory (CD-ROM), or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an application specific integrated circuit (application specific integrated circuit, ASIC). In addition, the ASIC may reside in a terminal device or a network device. The processor and the storage medium may reside as discrete components in a terminal device or network device.
Those of skill in the art will appreciate that in one or more of the above examples, the functions described in the embodiments of the present application may be implemented, in whole or in part, in 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. When loaded and executed on a computer, produces a flow or function in accordance with embodiments of the present application, in whole or in part. 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. 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 video disc (digital video disc, DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), or the like.
The foregoing embodiments have been provided for the purpose of illustrating the embodiments of the present application in further detail, and it should be understood that the foregoing embodiments are merely illustrative of the embodiments of the present application and are not intended to limit the scope of the embodiments of the present application, and any modifications, equivalents, improvements, etc. made on the basis of the technical solutions of the embodiments of the present application are included in the scope of the embodiments of the present application.

Claims (14)

1. A data transmission method, which is applied to a terminal device switched to a relay node, the method comprising:
the terminal equipment establishes connection with the relay node;
and the terminal equipment sends uplink data to the relay node under the condition that the Radio Resource Control (RRC) state between the relay node and the network equipment is a connection state.
2. The method according to claim 1, wherein the method further comprises:
the terminal equipment sends uplink data to the relay node under the conditions that the RRC state is an idle state or a non-activated state and first indication information from the relay node is received;
the first indication information is used for indicating that the relay node is successful in random access, and/or the relay node receives radio bearer configuration information of the terminal equipment.
3. The method according to claim 1 or 2, characterized in that the method further comprises:
the terminal equipment receives second indication information from the relay node; the second indication information is used for indicating that the Radio Resource Control (RRC) state between the relay node and the network equipment is in a connection state, or in an idle state or in an inactive state.
4. A method according to any one of claims 1 to 3, wherein the terminal device sending uplink data to the relay node comprises:
the terminal equipment submits uplink data to a Radio Link Control (RLC) entity through a Packet Data Convergence Protocol (PDCP) entity, wherein the RLC entity is an RLC entity associated with the relay node in the terminal equipment;
and the terminal equipment sends uplink data through the RLC entity.
5. The method according to any of claims 1 to 4, wherein the terminal device establishes a connection with the relay node, comprising:
and when receiving a direct link establishment receiving message from the relay node, the terminal equipment determines to establish connection with the relay node.
6. A communication device, the device comprising:
a connection establishment unit for establishing connection with the relay node;
and the uplink data sending unit is used for sending uplink data to the relay node under the condition that the Radio Resource Control (RRC) state between the relay node and the network equipment is in a connection state.
7. The apparatus of claim 6, wherein the upstream data transmission unit is further configured to:
sending uplink data to the relay node under the conditions that the RRC state is in an idle state or a non-activated state and first indication information from the relay node is received;
the first indication information is used for indicating that the relay node is successful in random access, and/or the relay node receives radio bearer configuration information of the device.
8. The apparatus according to claim 6 or 7, further comprising a receiving unit for:
receiving second indication information from the relay node; the second indication information is used for indicating that the Radio Resource Control (RRC) state between the relay node and the network equipment is in a connection state, or in an idle state or in an inactive state.
9. The apparatus according to any one of claims 6 to 8, wherein the uplink data transmission unit is configured to transmit uplink data to the relay node, specifically configured to:
delivering uplink data to a Radio Link Control (RLC) entity through a Packet Data Convergence Protocol (PDCP) entity, wherein the RLC entity is an RLC entity associated with the relay node in the device;
and sending uplink data through the RLC entity.
10. The apparatus according to any of the claims 6 to 9, wherein the connection establishment unit establishes a connection with the relay node, in particular for:
and when receiving a direct link establishment receiving message from the relay node, determining to establish connection with the relay node.
11. A terminal device, characterized in that the terminal device comprises a processor and a memory, which are connected to each other, wherein the memory is adapted to store a computer program, which computer program comprises program instructions, which processor is configured to invoke the program instructions to perform the method according to any of claims 1 to 5.
12. The utility model provides a module equipment, its characterized in that, module equipment includes communication module, power module, storage module and chip module, wherein:
the power supply module is used for providing electric energy for the module equipment;
the storage module is used for storing data and instructions;
the communication module is used for carrying out internal communication of module equipment or carrying out communication between the module equipment and external equipment;
the chip module is used for:
establishing connection with a relay node;
and sending uplink data to the relay node under the condition that the Radio Resource Control (RRC) state between the relay node and the network equipment is in a connection state.
13. A computer readable storage medium, characterized in that the computer readable storage medium stores a computer program comprising program instructions which, when executed by a processor, cause the processor to perform the method of any of claims 1 to 5.
14. A computer program product comprising computer instructions which, when run on a computer, cause the computer to perform the method of any one of claims 1 to 5.
CN202111403445.0A 2021-11-24 2021-11-24 Data transmission method and related device Pending CN116170849A (en)

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US20100150022A1 (en) * 2008-12-17 2010-06-17 Research In Motion Corporation System and Method for a Relay Protocol Stack
CN111800822B (en) * 2019-08-15 2022-06-17 维沃移动通信有限公司 Resource request method, resource allocation method, resource acquisition method, resource allocation device, resource acquisition device and resource acquisition equipment
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